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CN113195179A - Method and apparatus for manufacturing composite of continuous sheet of absorbent article - Google Patents

Method and apparatus for manufacturing composite of continuous sheet of absorbent article Download PDF

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Publication number
CN113195179A
CN113195179A CN201980082831.9A CN201980082831A CN113195179A CN 113195179 A CN113195179 A CN 113195179A CN 201980082831 A CN201980082831 A CN 201980082831A CN 113195179 A CN113195179 A CN 113195179A
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China
Prior art keywords
roller
holding
sheet
continuous
peripheral surface
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Granted
Application number
CN201980082831.9A
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Chinese (zh)
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CN113195179B (en
Inventor
大场建次
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Unicharm Corp
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Unicharm Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/40—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Biomedical Technology (AREA)
  • Epidemiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

The present invention has: a conveying step of conveying the 1 st continuous sheet (3 a); a holding roller rotating step of rotating the holding roller (21) while holding the 1 st continuous sheet (3a) in a sliding state; a cutting roller rotating step of driving the cutting roller (31) to rotate; a cutting generation step of generating a single sheet (3) by cutting the 1 st continuous sheet (3a) by the receiving blade (23) of the holding roller (21) and the cutting blade (33) of the cutting roller (31) in cooperation; a holding step of holding the sheet-like sheet (3) in a non-slip state; and a transfer step of joining and transferring the cut sheet (3) to the 2 nd continuous sheet (5a) being conveyed, wherein at least one of the holding roller (21) and the cutting roller (31) has support shafts (25, 26) and an input shaft (215), and the outer diameter (D26) of the support shaft is larger than the outer diameter (D215) of the input shaft.

Description

Method and apparatus for manufacturing composite of continuous sheet of absorbent article
Technical Field
The present invention relates to a method and an apparatus for manufacturing a composite of continuous sheets of absorbent articles.
Background
Conventionally, a method of producing a composite of the following continuous sheets is known: in a manufacturing line of an absorbent article such as a disposable diaper, a 1 st continuous sheet is cut to produce a single sheet having a predetermined length, and the produced single sheet is joined to a 2 nd continuous sheet and transferred while a gap is provided between the produced single sheet and the single sheet adjacent to the 2 nd continuous sheet in a sheet continuous direction. For example, patent document 1 discloses the following apparatus: the servo motor is used as a driving source, power is transmitted through a driving gear and the like, a transfer device with a housing segment is rotated, and the components are conveyed and transferred to the carrier.
Prior art documents
Patent document
Patent document 1: japanese laid-open patent publication No. 2012-125587
Disclosure of Invention
Problems to be solved by the invention
When cutting another sheet member from the conveyed sheet member and transferring the cut sheet member, it is necessary to accurately control the conveying speed. In contrast, when a composite of continuous sheets is manufactured using the manufacturing apparatus described in patent document 1, there is a problem that responsiveness is deteriorated or rotation control is difficult in the power transmission process from the servo motor to the transfer apparatus. In particular, in an apparatus for manufacturing a composite sheet used for manufacturing a disposable diaper and the like, a roller for holding and conveying the sheet becomes large, and a load of the apparatus itself and inertia (moment of inertia) during operation easily become large, and it is difficult to stably manufacture a composite of continuous sheets.
The present invention has been made in view of the above-described problems, and an object thereof is to stably manufacture a composite of continuous sheets for an absorbent article such as a disposable diaper.
Means for solving the problems
A main aspect of the present invention for achieving the above object is a method for manufacturing a composite of continuous sheets for absorbent articles, the method including cutting a 1 st continuous sheet to form individual sheet pieces, and joining and transferring the individual sheet pieces to a 2 nd continuous sheet while leaving an interval between the individual sheet pieces adjacent to the 2 nd continuous sheet piece in a direction in which the 2 nd continuous sheet piece continues, the method including: a conveying step of conveying the 1 st continuous sheet at a 1 st conveying speed value with the continuous direction of the 1 st continuous sheet as a conveying direction; a holding roller rotating step of driving the holding roller to rotate so that a rotation direction thereof is along a conveying direction of the 1 st continuous sheet, the holding roller rotating step rotating the holding roller while holding the 1 st continuous sheet on an outer peripheral surface of the holding roller so that the 1 st continuous sheet slides with respect to the outer peripheral surface; a cutter roller rotating step of rotating a cutter roller disposed at a 1 st predetermined position in the rotating direction of the holding roller along the conveying direction, and driving the cutter roller to rotate; a cutting generation step of generating the cut sheet by cutting the 1 st continuous sheet with the receiving blade of the cutter roller in cooperation with the cutting blade when the receiving blade of the outer peripheral surface of the holding roller passes the 1 st predetermined position in the rotational direction of the holding roller; a holding step of holding the sheet-like piece on the outer peripheral surface in a non-slip state; and a transfer step of, when the sheet-like sheet held on the outer peripheral surface in a non-slip state passes through a 2 nd predetermined position in the rotational direction, joining the sheet-like sheet on the 2 nd continuous sheet conveyed toward the 2 nd predetermined position at a 2 nd conveyance speed value larger than the 1 st conveyance speed value and transferring the sheet-like sheet on the outer peripheral surface, wherein the holding roller rotates so that a speed value in the rotational direction when passing through the 2 nd predetermined position becomes the same value as the 2 nd conveyance speed value, and at least one of the holding roller and the cutter roller includes: a support shaft rotatably supporting the one roller; and an input shaft that is driven to rotate the one roller and is provided integrally with the one roller, wherein the outer diameter of the support shaft is larger than the outer diameter of the input shaft.
Other features of the present invention will be apparent from the description of the present specification and the accompanying drawings.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, a composite of continuous sheets for an absorbent article such as a disposable diaper can be stably manufactured.
Drawings
Fig. 1A is a schematic plan view of the back sheet 1, and fig. 1B is a schematic plan view of an intermediate member 1A serving as a base of the back sheet 1.
Fig. 2 is a schematic side view of the manufacturing apparatus 10.
Fig. 3 is an explanatory diagram of the speed pattern of the anvil roller 21.
Fig. 4 is a supplementary view for explaining the speed pattern of fig. 3, and is a schematic side view of the manufacturing apparatus 10 similar to fig. 2.
Fig. 5 is a diagram showing an example of a specific configuration of the anvil roller mechanism 20 and the cutter roller mechanism 30.
Fig. 6 is a schematic cross-sectional view for explaining the structure of the anvil roller mechanism 20.
Fig. 7 is a schematic cross-sectional view showing a 1 st modification of the manufacturing apparatus 10.
Fig. 8 is a schematic cross-sectional view showing a 2 nd modification of the manufacturing apparatus 10.
Detailed Description
At least the following matters will be apparent from the description of the present specification and the accompanying drawings.
A method for manufacturing a composite of continuous sheets for absorbent articles, the method comprising cutting a 1 st continuous sheet to form individual sheet pieces, and joining and transferring the individual sheet pieces to a 2 nd continuous sheet while leaving a space between the individual sheet pieces adjacent to the 2 nd continuous sheet piece in a direction in which the 2 nd continuous sheet piece continues, the method comprising: a conveying step of conveying the 1 st continuous sheet at a 1 st conveying speed value with the continuous direction of the 1 st continuous sheet as a conveying direction; a holding roller rotating step of driving the holding roller to rotate so that a rotation direction thereof is along a conveying direction of the 1 st continuous sheet, the holding roller rotating step rotating the holding roller while holding the 1 st continuous sheet on an outer peripheral surface of the holding roller so that the 1 st continuous sheet slides with respect to the outer peripheral surface; a cutter roller rotating step of rotating a cutter roller disposed at a 1 st predetermined position in the rotating direction of the holding roller along the conveying direction, and driving the cutter roller to rotate; a cutting generation step of generating the cut sheet by cutting the 1 st continuous sheet with the receiving blade of the cutter roller in cooperation with the cutting blade when the receiving blade of the outer peripheral surface of the holding roller passes the 1 st predetermined position in the rotational direction of the holding roller; a holding step of holding the sheet-like piece on the outer peripheral surface in a non-slip state; and a transfer step of, when the sheet-like sheet held on the outer peripheral surface in a non-slip state passes through a 2 nd predetermined position in the rotational direction, joining the sheet-like sheet on the 2 nd continuous sheet conveyed toward the 2 nd predetermined position at a 2 nd conveyance speed value larger than the 1 st conveyance speed value and transferring the sheet-like sheet on the outer peripheral surface, wherein the holding roller rotates so that a speed value in the rotational direction when passing through the 2 nd predetermined position becomes the same value as the 2 nd conveyance speed value, and at least one of the holding roller and the cutter roller includes: a support shaft rotatably supporting the one roller; and an input shaft that is driven to rotate the one roller and is provided integrally with the one roller, wherein the outer diameter of the support shaft is larger than the outer diameter of the input shaft.
According to the method for manufacturing the composite of the continuous sheet of the absorbent article, the influence of inertia can be reduced when the holding roller (or the cutter roller) is driven to rotate by reducing the outer diameter of the input shaft. On the other hand, by increasing the outer diameter of the support shaft of the holding roller (or the cutter roller), the driving rotation of the holding roller (cutter roller) can be stably supported. Therefore, by making the outer diameter of the support shaft larger than the outer diameter of the input shaft, the driving rotation of the holding roller (cutter roller) can be accurately controlled in a predetermined speed pattern. This enables stable production of a continuous sheet.
In the method of manufacturing a composite of continuous sheets of absorbent articles, it is preferable that a servomotor for applying a driving rotational force to the one roller is provided, and an output shaft for outputting the driving rotational force from the servomotor and the input shaft are coaxially positioned.
According to such a method of manufacturing a composite of continuous sheets of absorbent articles, the driving rotational force generated by the servo motor is easily transmitted smoothly from the output shaft to the input shaft, and the responsiveness when the rotational speed of the holding roller (cutter roller) is periodically accelerated and decelerated is easily improved. This enables the rotation of the holding roller (cutter roller) to be controlled with high accuracy, and the continuous sheet can be produced more stably.
In the method for manufacturing a composite of continuous sheets for absorbent articles, it is preferable that: a 1 st holding plate having a support shaft holding hole for holding the support shaft and fixing a position of the support shaft; and a 2 nd holding plate which is provided in parallel with the 1 st holding plate and includes a servomotor holding hole for holding the servomotor and fixing a position of the servomotor, and a center of the support shaft holding hole and a center of the servomotor holding hole are coaxially positioned.
According to the method for manufacturing the composite of the continuous sheet of the absorbent article, the position adjustment when the holding roller and the servo motor are arranged can be accurately and easily performed by using the support shaft holding hole and the servo motor holding hole as references. This makes it difficult for the rotation axis of the holding roller (cutter roller) and the rotation axis of the servo motor to be displaced from each other, and enables the drive and rotation control of the holding roller (cutter roller) to be performed with higher accuracy.
In the method for manufacturing a composite of continuous sheets of absorbent articles, it is preferable that the 1 st holding plate and the 2 nd holding plate are connected to each other at a predetermined interval in the axial direction of the one roller.
According to the method of manufacturing the composite of the continuous sheet of the absorbent article, the positional relationship between the 1 st holding plate and the 2 nd holding plate is fixed to each other, and the positional relationship between the support shaft holding hole and the servo motor holding hole, and the like are also fixed to each other. Therefore, the coaxial relationship between the holding roller (cutter roller) and the servo motor is easily maintained, and the driving and rotation control of the holding roller (cutter roller) can be performed with higher accuracy.
In the method of manufacturing the composite of the continuous sheet of absorbent articles, it is preferable that the servo motor holding hole and the input shaft overlap each other in an axial direction of the one roller.
According to such a method of manufacturing a composite of continuous sheets of absorbent articles, the width of the manufacturing apparatus in the axial direction (CD direction) is reduced by the amount of overlap between the servomotor holding hole and the input shaft, and the manufacturing apparatus can be configured compactly. Therefore, the installation space of the manufacturing apparatus is reduced, and the degree of freedom in designing the apparatus can be easily increased.
In the method of manufacturing a composite of continuous sheets of absorbent articles, it is preferable that the input shaft is connected to the output shaft of the servo motor by a rigid coupling.
According to the method for manufacturing the composite of continuous sheets for absorbent articles, the output shaft and the input shaft are integrated by using the rigid coupling, and thus more accurate driving rotation control is facilitated. Further, since no transmission auxiliary member such as a gear or a belt is provided between the output shaft and the input shaft, the driving rotational force from the servo motor can be transmitted to the holding roller (cutter roller) without loss.
In the method of manufacturing the composite of continuous sheets for absorbent articles, it is preferable that a portion of the outer peripheral surface of the holding roller on which the receiving blade is provided and the support shaft at least partially overlap each other in the axial direction of the holding roller.
According to the method for producing the composite of continuous sheets of absorbent articles, when the region of the holding roller where the receiving blade is provided is a region where a load is likely to be applied when the sheet is cut, the load can be supported by the support shaft at a portion overlapping the region in the axial direction (CD direction). Therefore, the holding roller and the cutter roller can be driven and rotated easily and stably.
In the method for producing a composite of continuous sheets of absorbent articles, the outer diameter of the support shaft is preferably 1/3 or more of the outer diameter of the holding roller.
According to the method of manufacturing the composite of the continuous sheet of the absorbent article, since the outer diameter of the support shaft is at least equal to or larger than the thickness of the holding portion, the strength of the support shaft itself is not sufficient, and the weight of the holding roller is not too heavy. Therefore, the holding roller can be stably supported by the support shaft.
In the method for manufacturing the composite of continuous sheets of absorbent articles, it is preferable that a suction mechanism for generating suction force for holding the 1 st continuous sheet on the outer peripheral surface is provided, the suction mechanism being communicated with the inside of the support shaft from a suction hole provided in the outer peripheral surface of the holding roller, the suction mechanism being provided on the support shaft.
According to the method for manufacturing the composite of the continuous sheet of the absorbent article, the suction mechanism can be provided on the support shaft side independently of the transmission path of the driving rotational force from the servo motor to the holding roller (cutter roller). This makes it possible to perform stable drive rotation control without interference between the two. Further, the structure of the holding roller mechanism can be suppressed from becoming complicated.
In the method of manufacturing a composite of continuous sheets of absorbent articles, it is preferable that the number of receiving blades provided on the holding roller be equal to the number of cutting blades provided on the cutting roller.
According to the method for manufacturing the composite of the continuous sheet of the absorbent article, when the driving rotation of the holding roller and the driving rotation of the cutting roller are synchronized, the cutting blade and the receiving blade corresponding to each other can be brought into cooperation with each other in the same combination at all times. Therefore, the continuous sheet can be stably cut.
In the method of manufacturing a composite of continuous sheets of absorbent articles, it is preferable that the servo motor for applying the driving rotational force to the holding roller is a servo motor separate from the servo motor for applying the driving rotational force to the cutter roller.
According to the method for manufacturing the composite of the continuous sheet of the absorbent article, the moment of inertia (inertia) acting on the holding roller and the cutter roller of each motor can be reduced as compared with the case where two rollers are driven by one servo motor. This improves the response of each roller, and enables more accurate drive rotation control.
Further, there is provided a manufacturing apparatus for manufacturing a composite of continuous sheets relating to an absorbent article by cutting a 1 st continuous sheet to produce a single sheet, and joining and transferring the single sheet to a 2 nd continuous sheet while leaving a space between the single sheet and a single sheet adjacent to the 2 nd continuous sheet in a direction in which the 2 nd continuous sheet continues, the manufacturing apparatus including: a conveying mechanism for conveying the 1 st continuous sheet at a 1 st conveying speed value with the conveying direction of the 1 st continuous sheet as a conveying direction; a holding roller mechanism that rotationally drives a holding roller along a transport direction of the 1 st continuous sheet, the holding roller mechanism rotating the holding roller while holding the 1 st continuous sheet on an outer peripheral surface of the holding roller so that the 1 st continuous sheet slides with respect to the outer peripheral surface; and a cutter roller mechanism for rotating the cutter roller along the transport direction, the cutter roller being disposed at a 1 st predetermined position in the rotation direction of the holding roller, wherein when the receiving blade of the outer peripheral surface of the holding roller passes through the 1 st predetermined position in the rotation direction of the holding roller, the receiving blade cooperates with the cutting blade of the cutter roller to cut the 1 st continuous sheet to produce the sheet, the sheet is held on the outer peripheral surface in a non-slip state, and when the sheet held on the outer peripheral surface in the non-slip state passes through a 2 nd predetermined position in the rotation direction, the sheet of the outer peripheral surface is joined to and transferred to the 2 nd continuous sheet transported toward the 2 nd predetermined position at a 2 nd transport velocity value larger than the 1 st transport velocity value, the holding roller rotates so that a speed value in the rotational direction when the holding roller passes through the 2 nd predetermined position becomes the same value as the 2 nd conveyance speed value, and at least one of the holding roller and the cutter roller includes: a support shaft rotatably supporting the one roller; and an input shaft that is driven to rotate the one roller and is provided integrally with the one roller, wherein the outer diameter of the support shaft is larger than the outer diameter of the input shaft.
According to such a manufacturing apparatus, by reducing the outer diameter of the input shaft, the influence of inertia can be reduced when the holding roller (or the cutter roller) is driven to rotate. On the other hand, by increasing the outer diameter of the support shaft of the holding roller (or the cutter roller), the driving rotation of the holding roller (cutter roller) can be stably supported. Therefore, by making the outer diameter of the support shaft larger than the outer diameter of the input shaft, the driving rotation of the holding roller (cutter roller) can be accurately controlled in a predetermined speed pattern. This enables stable production of a continuous sheet.
Embodiments of the present invention are described in detail below with reference to the accompanying drawings
The method and apparatus 10 for manufacturing a composite of a continuous sheet of an absorbent article according to the present embodiment are used for manufacturing an intermediate member 1a serving as a base material of a back sheet 1 of a disposable diaper, which is an example of the composite of the continuous sheet. Fig. 1A is a schematic plan view of the back sheet 1, and fig. 1B is a schematic plan view of an intermediate member 1A serving as a base of the back sheet 1.
The disposable diaper is a so-called tape diaper. That is, this diaper is of a type in which a pair of fastening tapes (not shown) positioned on both sides in the width direction of the diaper are fastened to a target tape when worn on a wearer.
For this purpose, the back sheet 1 has: an outer sheet 5 constituting a diaper outer body; and a target tape 3 joined to an outer surface (a surface on the non-skin side of the wearer) in the thickness direction of the exterior sheet 5. A liquid-impermeable leakproof sheet (not shown), an absorbent body (not shown) formed by molding pulp fibers, a liquid-permeable topsheet, and the like (not shown) are laminated and fixed in this order on the inner surface (the surface on the skin side of the wearer) in the thickness direction of the outer sheet 5, thereby forming a base portion of the diaper.
As a material of the exterior sheet 5, a soft nonwoven fabric mainly composed of resin fibers can be used, and here, a spunbond nonwoven fabric is used. On the other hand, as a material of the target tape 3, a material having a suitable engagement property with a male material (hook material) of the surface fastener tape can be used, and a female material (loop material) of the surface fastener tape, a hot air nonwoven fabric, or the like can be exemplified. Here, a hot air nonwoven fabric is used.
The intermediate member 1a serving as the base of the back sheet 1 is a continuous body before being cut into units of the back sheet 1 at a product pitch P1 as shown in fig. 1B. That is, the intermediate member 1a is formed by bonding a plurality of target tapes 3 and 3 … in a single sheet shape to a continuous fiber sheet 5a as a roll body of the exterior sheet 5, and arranged at a product pitch P1 in a continuous direction thereof. The intermediate member 1a is manufactured by the manufacturing method and the manufacturing apparatus 10 according to the present embodiment.
That is, in the manufacturing method and the manufacturing apparatus 10, first, the continuous body 3a of the target tape (corresponding to the "1 st continuous sheet") which becomes the roll body of the target tape 3 is cut to generate the target tape 3 in a single sheet shape, and the target tape 3 is joined to the continuous fiber sheet 5a (corresponding to the "2 nd continuous sheet") which becomes the roll body of the outer sheet 5 at the product pitch P1 in the continuous direction thereof, thereby manufacturing the intermediate member 1 a.
< overview of the sheet manufacturing method Using the manufacturing apparatus 10 >
First, the manufacturing apparatus 10 and a method of manufacturing the back sheet 1 (continuous sheet composite) using the manufacturing apparatus 10 will be described in brief. Fig. 2 is a schematic side view of the manufacturing apparatus 10. In the manufacturing apparatus 10, the CD direction (direction penetrating the paper surface in fig. 2) is set as the width direction of the apparatus 10. In this example, the CD direction is horizontal, but the present invention is not limited to this. In this example, the vertical up-down direction and the horizontal front-back direction are set as two directions orthogonal to the CD direction, and thereby the respective conveyance directions of the continuous body 3a of the target tape and the continuous fiber sheet 5a of the exterior sheet are directed in the directions defined by both the up-down direction and the front-back direction. The respective width directions of the continuous body 3a of the target tape and the continuous fiber sheet 5a of the exterior sheet are parallel to the CD direction. Further, when a direction orthogonal to the CD direction and the conveyance direction is defined as a Z direction, the Z direction is parallel to each thickness direction of the continuous body 3a of the target tape and the continuous fiber sheet 5a of the exterior sheet.
As shown in fig. 2, the manufacturing apparatus 10 is a slip cutting apparatus. Namely, the apparatus 10 includes: (1) a target tape conveying mechanism 11 that conveys a continuous body 3a (1 st continuous piece) of a target tape in a conveying direction at a 1 st conveying speed value V3 a; (2) an adhesive application device 15 that applies an adhesive (not shown) to one of both surfaces of the target continuous body 3 a; (3) an anvil roller mechanism 20 configured to rotate an anvil roller 21 (corresponding to a holding roller) at a circumferential velocity value V21 larger than the 1 st conveyance velocity value V3a, thereby holding the continuous body 3a of the target tape conveyed from the target tape conveyance mechanism 11 while sliding in the rotational direction with respect to the outer circumferential surface 21a of the anvil roller 21; (4) a cutter roller 31 (cutter roller mechanism 30) that pinches and cuts the continuous body 3a of the target tape by cooperating with a receiving blade 23 provided on the outer peripheral surface 21a of the anvil roller 21, and that generates a single-sheet-shaped target tape 3 (single-sheet-shaped sheet) from the continuous body 3 a; and (5) a continuous fiber sheet conveying mechanism 40 for conveying the continuous fiber sheet 5a (2 nd continuous sheet) of the outer sheet 5 toward the target tape 3, which is separated from the continuous body 3a of the target tape and is held on the outer circumferential surface 21a of the anvil roller 21 in a non-slip state, along the rotating direction Dc21 of the anvil roller 21 at a 2 nd conveying speed value V5a (mpm) larger than the 1 st conveying speed value V3a (mpm), and joining and delivering the target tape 3 to the continuous fiber sheet 5a by the adhesive.
The target belt conveying mechanism 11 (corresponding to the 1 st conveying mechanism) is, for example, a suction belt conveyor. That is, the continuous body 3a of the target belt is sucked in a surface-contact state on the outer peripheral surface of the endless belt 12 by suction from the plurality of suction holes (not shown) formed on the outer peripheral surface of the endless belt 12 as a conveying surface. In this suction state, the endless belt 12 is driven to rotate by a servo motor as a drive source, and conveys the target continuous belt 3a in the conveyance direction at the above-described first conveyance speed value V3a (mpm) maintained constant.
However, the target belt conveying mechanism 11 is not limited to some suction belt conveyors. For example, a pinch roller device (not shown) may be used. That is, in this pinch roller device, the continuous body 3a of the target tape is nipped and conveyed by a pair of upper and lower drive rollers rotating in opposite directions.
The adhesive application device 15 includes: a nozzle 15N for discharging an adhesive such as a hot-melt adhesive; and a pump, not shown, for supplying the adhesive to the nozzle 15N. Then, the adhesive is discharged from the nozzle 15N, whereby the adhesive is applied to one of the two surfaces of the target continuous body 3 a.
Examples of the application pattern of the adhesive include an Ω pattern in which a plurality of wavy lines are arranged in the CD direction along the conveyance direction, a stripe pattern in which a plurality of wavy lines are arranged in the CD direction along a straight line in the conveyance direction, and a spiral pattern in which a plurality of spiral lines are arranged in the CD direction along the conveyance direction. In this example, the adhesive is applied over substantially the entire region in the CD direction so as to reach both ends in the CD direction, but the invention is not limited to this.
The anvil roller mechanism 20 (corresponding to the holding roller mechanism) has the anvil roller 21 described above. The roller 21 is rotatably supported about a rotation axis C21 along the CD direction, and the roller 21 can rotate in the rotation direction Dc21 along the conveyance direction of the target continuous belt 3 a. A servomotor 120, which will be described later, is connected to the roller 21, and a driving rotational force is applied from the servomotor 120, whereby the roller 21 is driven and rotated in the rotational direction Dc 21.
Here, the outer peripheral surface 21a of the anvil roller 21 has a holding function of winding and holding the sheet-like object in a surface contact state, and thereby holds the continuous body 3a of the target tape or the target tape 3 in a single sheet shape in a surface contact state. In this example, the holding function is realized by a plurality of air intake holes 24 formed in the outer peripheral surface 21a (see fig. 5). That is, the suction from the suction holes 24 gives the outer peripheral surface 21a of the anvil roller 21a suction force, which becomes a holding force for holding the continuous body 3a of the target tape or the sheet-like target tape 3. However, the method of applying the holding force to the outer peripheral surface 21a is not limited to this, and other methods such as a method of applying electrostatic attraction may be used.
Then, the continuous body 3a of the target tape is conveyed along the substantially tangential direction of the outer peripheral surface 21a on the outer peripheral surface 21a of the anvil roller 21, and the continuous body 3a is wound around the outer peripheral surface 21a in a surface contact state by the holding force. Further, the winding start position Swst of the continuous body 3a on the outer circumferential surface 21a is located upstream of the arrangement position S31 of the cutter roller 31 in the rotation direction Dc21 by a predetermined angle.
Here, the circumferential velocity value V21(mpm) of the anvil roller 21 is set to a velocity value greater than the 1 st conveyance velocity value V3a of the continuous body 3a of the target tape. Thereby, the continuous body 3a of the target tape is held in a surface contact state on the outer peripheral surface 21a so as to slide to the upstream side with respect to the outer peripheral surface 21a of the anvil roller 21. That is, the continuous body 3a of the target belt gradually moves to the downstream side in the rotating direction Dc21 based on the first conveyance speed value V3a while sliding on the outer circumferential surface 21 a.
On the other hand, a receiving blade 23 that receives a cutting blade 33, which will be described later, of the cutter roller 31 is provided on the outer peripheral surface 21a of the anvil roller 21. In this example, the receiving blade 23 has an arcuate surface 23a that faces outward in the rotational radial direction Dr21 of the anvil roller 21, and the arcuate surface 23a is formed in an arcuate shape that is concentric with the outer peripheral surface 21a of the anvil roller 21 and has the same radius as the outer peripheral surface 21a, so that the arcuate surface 23a and the outer peripheral surface 21a are flush with each other. When the receiving blade 23 passes through the position S31 (corresponding to the 1 st predetermined position) where the cutter roller 31 is disposed in the direction of rotation Dc21, the cutting blade 33 of the cutter roller 31 rotating in conjunction with the anvil roller 21 cooperates with the arcuate surface 23a of the receiving blade 23 to pinch the continuous body 3a of the target tape on the outer peripheral surface 21a, thereby cutting the continuous body 3a of the target tape and separating the portion 3e on the distal end side thereof. The cut-off distal end portion 3e is a single sheet of the target tape 3.
The separated target tape 3 is then held in a non-slip state on the outer peripheral surface 21a of the anvil roller 21 and the receiving blade 23, and is thereby conveyed in the downstream direction of the rotation direction Dc21 integrally with the outer peripheral surface 21a and the receiving blade 23 at the circumferential velocity value V21 of the anvil roller 21. At this time, the gap D3 is formed between the target tapes 3 cut and generated thereafter based on the difference between the circumferential speed value V21 and the 1 st conveyance speed value V3a of the target tape continuous body 3 a.
Incidentally, in this example, as shown in fig. 2, the receiving blade 23 is configured as a member that is detachable from the anvil roller 21 and is different from the roller 21. Therefore, when the receiving blade 23 is worn, only the receiving blade 23 may be replaced, that is, the anvil roller 21 itself does not need to be replaced. For this reason, the maintenance cost is reduced.
The cutter roller mechanism 30 has the cutter roller 31 described above. The cutter roller 31 is disposed at a predetermined position S31 in the rotational direction Dc21 of the anvil roller 21 as described above. Then, the roller 31 is rotatably supported about the rotation axis C31 along the CD direction, whereby the roller 31 can rotate in the rotation direction Dc31 along the conveyance direction of the target continuous belt 3 a. Further, a servomotor 130 (not shown in fig. 2) different from the servomotor 120 of the anvil roller 21 is connected to the roller 31, and thereby a driving rotational force is applied from the motor, and the roller 31 is driven and rotated in the rotational direction Dc 31. That is, the anvil roller 21 and the cutter roller 31 individually have dedicated servo motors 120, 130, respectively. Accordingly, as compared with the case where the two rollers 21 and 31 are driven by one servo motor, the moment of inertia acting on the anvil roller 21 and the cutter roller 31 of each motor can be reduced, and thus the anvil roller 21 and the cutter roller 31 can be rotated with high responsiveness. As a result, the anvil roller 21 and the cutter roller 31 can be smoothly rotated based on a speed pattern described later.
Further, on the outer peripheral surface 31a of the cutter roller 31, blade-shaped cutter blades 33 extending in the CD direction are arranged in one of the same number as the number of the receiving blades 23 of the anvil roller 21. Further, the arrangement pitch (m) of the receiving blade 23 in the rotating direction Dc21 on the rotating trajectory described by the arc surface 23a of the receiving blade 23 by the rotation of the anvil roller 21 in the rotating direction Dc21 is the same as the arrangement pitch (m) of the cutting blade 33 in the rotating direction Dc31 on the rotating trajectory described by the blade tip of the cutting blade 33 by the rotation of the cutting roller 31 in the rotating direction Dc 31. For example, when the cutting blade 33 and the receiving blade 23 are provided one by one, the arrangement pitch (m) is a circumferential length (m) of one revolution of each revolution path. These circumferential lengths are equal to each other.
Thus, based on a speed pattern described later, the cutter roller 31 and the anvil roller 21 rotate in accordance with the speed value V33(mpm) of the rotating direction Dc31 of the cutter blade 33 and the speed value V23(mpm) of the rotating direction Dc21 of the receiving blade 23, and the cutter roller 31 and the anvil roller 21 can nip and cut the continuous body 3a of the target tape to produce the target tape 3. That is, when the receiving blade 23 of the anvil roller 21 passes through the arrangement position S31 of the cutter roller 31 in the rotating direction Dc21, the cutter roller 31 can rotate so that the cutting blade 33 faces the receiving blade 23, and thus the receiving blade 23 and the cutting blade 33 can cooperate with each other to nip the continuous body 3a of the target tape. Hereinafter, the arrangement position S31 of the cutter roller 31 for performing the cutting process by the nip is also referred to as a "cutting process position S31".
The continuous fiber sheet conveying mechanism 40 conveys the continuous fiber sheet 5a of the exterior sheet through a predetermined conveying path. The continuous fiber sheet 5a is conveyed toward a predetermined position S43 (corresponding to the 2 nd predetermined position) on the downstream side of the arrangement position S31 of the cutter roller 31 in the rotation direction Dc21 of the anvil roller 21. That is, the continuous fiber sheet 5a is conveyed along a conveyance path such that it is closest to the outer peripheral surface 21a of the anvil roller 21 at the predetermined position S43. Thus, when the target tape 3 held in the non-slip state on the outer peripheral surface 21a of the anvil roller 21 passes through the predetermined position S43, the target tape 3 is joined to the continuous fiber sheet 5a of the exterior sheet with the adhesive agent. Then, the target tape 3 is integrated with the continuous fiber sheet 5a and is conveyed in the conveying direction of the continuous fiber sheet 5a, thereby producing the intermediate member 1a of the back sheet 1. Hereinafter, the predetermined position S43 at which the handover process is performed is also referred to as a "handover process position S43".
The continuous fiber sheet conveying mechanism 40 for forming such a conveying path includes, for example, 3 rollers 41, 43, and 41 arranged in the conveying direction of the continuous fiber sheet 5 a. Each of the rollers 41, 43, 41 is rotatably supported about a rotation axis C41, C43, C41 in the CD direction, respectively. The rollers 41, 43, and 41 are driven to rotate by applying a driving rotational force from a servo motor, not shown. Then, these rollers 41, 43, and 41 come into contact with the continuous fiber sheet 5a, and the conveying force in the conveying direction is obtained from the rollers 41, 43, and 41, and the continuous fiber sheet 5a is conveyed in the conveying direction.
Here, the roller 43 located at the center in the conveyance direction among the 3 rollers 41, 43, and 41 is disposed at a position near the transfer processing position S43. Further, a clearance CL between the outer peripheral surface 43a of the roller 43 and the outer peripheral surface 21a of the anvil roller 21 is set to the following size: when the target tape 3 held on the outer peripheral surface 21a of the anvil roller 21 passes through the above-described handover processing position S43, both the target tape 3 and the continuous fiber sheet 5a are slightly nipped from the thickness direction by both the anvil roller 21 and the roller 43.
Thus, when the target tape 3 held on the outer peripheral surface 21a of the anvil roller 21 passes through the transfer processing position S43, the target tape 3 and the continuous fiber sheet 5a on the outer peripheral surface 21a are nipped and joined by the adhesive, and the target tape 3 is transferred from the outer peripheral surface 21a to the continuous fiber sheet 5a side.
As described above, the 2 nd conveyance speed value V5a of the continuous fiber sheet 5a is set to a constant value greater than the 1 st conveyance speed value V3a of the target belt 3. Therefore, at the transfer processing position S43, the target tapes 3 on the outer peripheral surface 21a of the anvil roller 21 can be joined to the continuous web 5a with a space D3 between the target tapes 3 adjacent to the downstream side in the conveyance direction on the continuous web 5 a.
However, from the viewpoint of suppressing wrinkles that may occur when the target tape 3 is joined to and delivered to the continuous web 5a, it is necessary to set the circumferential velocity value V21(mpm) of the anvil roller 21 when the target tape 3 passes through the delivery processing position S43 to the same value as the 2 nd conveyance velocity value V5a of the continuous web 5 a. That is, it is necessary to set the speed value V23(mpm) of the receiving blade 23 in the rotating direction Dc21 at least when the receiving blade 23 passes through the transfer processing position S43 to the same value as the 2 nd conveyance speed value V5a of the continuous fiber sheet 5 a.
However, in the conventional slip cutting apparatus, the circumferential velocity value of the anvil roller is generally maintained constant over the entire circumference in the rotational direction, and in response thereto, the circumferential velocity value of the cutter roller is generally maintained constant over the entire circumference in the rotational direction. Therefore, if the speed value of the receiving blade at the position corresponding to the handover processing position S43 is set to the same value as the 2 nd conveyance speed value V5a, the receiving blade and the cutting blade move in the respective rotational directions at the speed value Vs 'same as the 2 nd conveyance speed value V5a even at the predetermined position S31' corresponding to the cutting processing position S31 at which the continuous body 3S of the target tape is to be cut. Here, however, the velocity value Vs 'is a velocity value larger than the 1 st conveyance velocity value V3a of the continuous body 3S of the target tape to be cut at the predetermined position S31'.
Therefore, in the conventional slip cutting apparatus, when the continuous body 3a is cut by the receiving blade and the cutting blade, a pulling force is applied to the continuous body 3a of the target tape from each of the blades toward the downstream side in the rotating direction due to a difference between the rotating direction velocity value of each of the blades and the 1 st conveyance velocity value V3a of the continuous body 3a of the target tape. However, if the difference is too large, the tension is also too large, and as a result, the cutting of the continuous body 3a of the target tape may become unstable due to the tearing.
Therefore, in the present embodiment of fig. 2, by rotating the anvil roller 21 based on the predetermined speed pattern (fig. 3), the speed value V23 of the receiving blade 23 in the rotating direction Dc21 is changed in accordance with the position in the rotating direction Dc21 as follows. That is, the velocity value V23(mpm) of the rotating direction Dc21 of the receiving blade 23 when passing through the handover processing position S43 of fig. 2 is set to the same value as the 2 nd conveyance velocity value V5a of the continuous fiber sheet 5a, and the velocity value V23(mpm) of the rotating direction Dc21 of the receiving blade 23 when passing through the cutting processing position S31 is set to be smaller than the velocity value V23(mpm) of the rotating direction Dc21 of the receiving blade 23 when passing through the handover processing position S43. Further, the cutter roller 31 also rotates in conjunction with the anvil roller 21 that rotates in the speed pattern described above. That is, the cutter roller 31 is also rotated in conjunction with the rotation of the cutting blade 33 so that the velocity value V33 in the rotational direction Dc31 of the cutting blade 33 becomes the same as the velocity value V23 in the rotational direction Dc21 of the receiving blade 23.
Thus, the velocity value V23 of the receiving blade 23 at the transfer processing position S43 can be set to the same value as the 2 nd conveyance velocity value V5a required for smooth transfer of the target tape 3 to the continuous fiber sheet 5a, and the velocity values V23 and V33 of the receiving blade 23 and the cutting blade 33 at the time of cutting at the cutting processing position S31 can be made closer to the 1 st conveyance velocity value V3a smaller than the 2 nd conveyance velocity value V5 a. That is, the difference between the speed values V23, V33 of the receiving blade 23 and the cutting blade 33 at the time of cutting and the 1 st conveyance speed value V3a of the target continuous ribbon 3a can be reduced. Further, this can reduce the pulling force in the rotational directions Dc21 and Dc31 that can be applied to the target continuous tape body 3a from the receiving blade 23 and the cutting blade 33 during cutting, and as a result, can stabilize the cutting.
Fig. 3 is an explanatory diagram of the above speed pattern of the anvil roller 21. Fig. 4 is a schematic side view of the manufacturing apparatus 10 similar to fig. 2, with the assistance of this description.
In fig. 3, the horizontal axis represents the position of the receiving blade 23 (specifically, the circumferential central portion of the blade 23) in the rotational direction Dc21 of the anvil roller 21, and the vertical axis represents the speed value V23(mpm) of the receiving blade 23 (specifically, the circular arc surface 23a of the blade 23) in the rotational direction Dc 21. In addition, the position of the former rotational direction Dc21 (hereinafter also referred to as a rotational position) is indicated by a rotational angle (fig. 4) around the rotational axis C21 of the anvil roller 21. As shown in fig. 4, this rotation angle is such that the upper end position of the anvil roller 21 closest to the cutter roller 31 is set to "0 °", and the anvil roller 21 is rotated clockwise about the rotation axis C21, so that an angle of 0 ° to 360 ° (0 °) is assigned to each rotation position when rotated clockwise one revolution from 0 ° of the above-described upper end position.
In addition, the cutter roller 31 also rotates based on the above-described speed pattern. For this reason, the horizontal axis of fig. 3 is also the position of the cutting edge 33 (specifically, the edge tip of the edge 33) in the rotational direction Dc31 of the cutter roller 31, and the vertical axis is also the velocity value V33(mpm) of the rotational direction Dc31 of the cutting edge 33 (specifically, the edge tip of the edge 33). However, as shown in fig. 4, since the cutter roller 31 rotates counterclockwise in the opposite direction to the anvil roller 21 and is positioned directly above the anvil roller 21, the lower end position of the cutter roller 31 closest to the anvil roller 21 is set to a rotational position of "0 °", and an angle of 0 ° to 360 ° (0 °) is assigned to each rotational position when rotated counterclockwise by one revolution from this.
The speed pattern sets one rotation of the anvil roller 21 and the cutter roller 31 as one cycle. Accordingly, speed values V23 and V33(mpm) of the receiving blade 23 and the cutting blade 33 in the respective rotational directions Dc21 and Dc31 are set in correspondence with the respective rotational positions of 0 ° to 360 °. Each of the rollers 21 and 31 performs a rotational operation by one rotation in the speed pattern, and repeats the rotational operation.
On the other hand, as described above with reference to fig. 4, since the anvil roller 21 and the cutter roller 31 are closest to each other at the rotational position of 0 °, the rotational position of 0 ° of each of the anvil roller 21 and the cutter roller 31 becomes the cutting processing position S31 described above. Further, the winding start position Swst is located at a rotational position of, for example, -20 ° (340 °) on the upstream side in the rotational direction Dc21 from the cutting processing position S31 with respect to the anvil roller 21. Further, the anvil roller 21 is rotated by 180 ° in point symmetry with respect to the rotation axis C21 at the handover processing position S43 described above with respect to the cutting processing position S31.
As shown in fig. 3, in this example, the speed pattern is a trapezoidal pattern. That is, the speed pattern has a constant speed region (hereinafter, also referred to as a constant speed region for cutting) having a constant speed value so as to correspond to the cutting processing position S31 of 0 ° and include the position S31. Further, there is an equal velocity region (hereinafter, also referred to as a constant velocity region for handover) having a constant velocity value so as to correspond to the handover processing position S43 of 180 ° and include the position S43. Further, an acceleration region that accelerates at a constant rate with respect to the rotation angle is provided at a position between the cutting constant velocity region and the handover constant velocity region in the rotation direction Dc21, and a deceleration region that decelerates at a constant rate with respect to the rotation angle is provided at a position between the handover constant velocity region and the cutting constant velocity region in the rotation direction Dc 21.
The velocity value Vc of the former constant velocity area for cutting is set to a velocity value between the aforementioned 1 st conveyance velocity value V3a and the 2 nd conveyance velocity value V5a, and the velocity value Vd of the latter constant velocity area for handover is set to a velocity value equal to the 2 nd conveyance velocity value V5 a.
This can exhibit the main operational effects described above in the present embodiment. That is, smooth transfer of the target tape to the continuous web 5a at the transfer processing position S43 can be achieved, and the cutting at the cutting processing position S31 can be stabilized.
< details of the holding roller 21 and the cutting roller 31 >
As described above, when the back sheet 1 is manufactured using the manufacturing apparatus 10 according to the present embodiment, it is necessary to accurately control the rotation of the anvil roller 21 (holding roller) and the cutter roller 31. Therefore, in the present embodiment, by setting the configuration of the anvil roller 21 and the cutter roller 31 as follows, the rotational movement of each roller is easily controlled, and the back sheet 1 can be stably manufactured.
Fig. 5 is a diagram showing an example of a specific configuration of the anvil roller mechanism 20 and the cutter roller mechanism 30 according to the present embodiment. The left side of fig. 5 shows a cross section in the CD direction and the vertical direction with respect to the anvil roller mechanism 20 and the cutter roller mechanism 30, and the right side of fig. 5 shows a cross section in the front-rear direction and the vertical direction.
As shown in fig. 5, in the anvil roller mechanism 20 of the present embodiment, the anvil roller 21 has a substantially cylindrical configuration, and the central axis thereof is disposed so as to extend along the rotation axis C21 (i.e., so as to extend along the CD direction) described in fig. 2. The anvil roller 21 has a holding portion 211 for holding a sheet-like object such as the target belt 3 on one side (left side in fig. 5) in the CD direction. The outer peripheral surface of the holding portion 211 corresponds to the outer peripheral surface 21 a. The anvil roller 21 has an input portion 215 for connection to the servo motor 120 on the other side in the CD direction (the right side in fig. 5). The input portion 215 is a cylindrical portion provided integrally with the anvil roller 21 and having an outer diameter smaller than that of the holding portion 211, and corresponds to an input shaft that is driven to rotate the anvil roller 21 upon receiving an input of a rotational driving force from the servomotor 120.
In addition, the anvil roller 21 is rotatably supported by the anvil roller supporting shaft 25 about the rotating shaft C21. The anvil roller supporting shaft 25 has a substantially cylindrical configuration, and is fixed to the 1 st holding plate 51 so that the center axis thereof is coaxial with the center axis of the anvil roller 21 (i.e., the rotation axis C21). The anvil roller supporting shaft 25 has a fixing portion 251 at one end (left side in fig. 5) in the CD direction, and is fixed to the 1 st holding plate 51 by the fixing portion 251. The anvil roller supporting shaft 25 has a supporting portion 252 at the other side (right side in fig. 5) in the CD direction. The support portion 252 is a cylindrical portion for supporting the anvil roller 21. A bearing 26 coaxial with the rotation axis C21 is provided on the outer peripheral surface of the support portion 252, and the outer peripheral surface in the radial direction of the bearing 26 is fitted into the inner surface 21i (inner peripheral surface) of the holding portion 211 of the anvil roller 21 (see fig. 6), whereby the anvil roller 21 is supported rotatably about the rotation axis C21. That is, in the present embodiment, the anvil roller supporting shaft 25 and the bearing 26 correspond to a "supporting shaft" that supports the anvil roller 21 (the holding portion 211).
The 1 st holding plate 51 is a flat plate-like member as shown by the hatched portion in fig. 5, and has sufficient strength and rigidity to support the load of the anvil roller mechanism 20 and the cutter roller mechanism 30. The 1 st holding plate 51 has a surface provided with a support shaft holding hole 512 as a through hole centering on a rotation shaft C21, a cutter roll support shaft holding hole 513 as a through hole centering on a rotation shaft C31, and at least two or more joint pipe holding holes 515.
The supporting shaft holding hole 512 and the fixing portion 251 of the anvil roller supporting shaft 25 are in a so-called fitting relationship, and the position of the anvil roller supporting shaft 25 is fixed with respect to the 1 st holding plate 51 by fitting the fixing portion 251 into the supporting shaft holding hole 512. According to such a configuration, the anvil roller 21 is rotatably supported about the rotation axis C21 in a cantilever state with respect to the 1 st holding plate 51 via the anvil roller supporting shaft 25.
The 1 st holding plate 51 is connected to the 2 nd holding plate 52 at two or more points by the plurality of connecting pipes 55 and 55 …. The 2 nd holding plate 52 is a member that holds the servo motor 120 and the servo motor 130, has a substantially same flat plate shape as the 1 st holding plate 51, is spaced apart from the other side (the right side in fig. 5) of the 1 st holding plate 51 in the CD direction by a predetermined distance, and is arranged parallel to the 1 st holding plate 51. The 2 nd holding plate 52 has, on its surface, servomotor holding holes 522 and 523 as through holes for holding the servomotors 120 and 130, respectively, and two or more connecting pipe holding holes 525. The connection pipe holding hole 525 is provided corresponding to the connection pipe holding hole 515 of the 1 st holding plate 51. That is, the connection tube holding hole 525 and the connection tube holding hole 515 are arranged coaxially, and the shape (diameter) thereof is also the same. As shown in fig. 5, one end of the connection pipe 55 in the CD direction is inserted into the connection pipe holding hole 515 of the 1 st holding plate 51, and the other end of the connection pipe 55 in the CD direction is inserted into the connection pipe holding hole 525 of the 2 nd holding plate 52, whereby the 1 st holding plate 51 and the 2 nd holding plate 52 are coupled to each other.
As described above, the servo motor 120 is a power unit that applies a driving rotational force to the anvil roller 21. The servomotor 120 has a main body portion 121, a connecting portion 122, and an output shaft 123. The main body 121 generates a driving rotational force. The connection portion 122 is a shaft-like portion that protrudes toward one side in the CD direction of the body portion 121, and is fitted in the servomotor holding hole 522 of the 2 nd holding plate 52. That is, the servomotor 120 is positioned and held by the 2 nd holding plate 52 by fitting the connecting portion 122 into the servomotor holding hole 522. In the present embodiment, as shown in fig. 5, the anvil roller 21 and the servomotor 120 are disposed on opposite sides with the 2 nd holding plate 52 therebetween in the CD direction.
Output shaft 123 of servo motor 120 is connected to input portion 215 of anvil roller 21. At this time, the servomotor 120 is disposed so that the output shaft 123 and the input portion 215 are coaxial. That is, in the present embodiment, the output shaft 123 of the servo motor 120, the input portion 215 of the anvil roller 21, and the anvil roller supporting shaft 25 are all coaxially related with the rotation shaft C21 as a common shaft (see fig. 5).
In the present embodiment, the cutter roller mechanism 30 has substantially the same configuration as the anvil roller mechanism 20. That is, the cutter roller 31 includes a holding portion 311 for holding the cutter blade 33 on the outer peripheral surface 31a and an input portion 315 as an input shaft for inputting a driving rotational force from the servomotor 130. And is rotatably supported about the rotation axis C31 by the cutter roller support shaft 35. The cutter roll support shaft 35 is fixed to the cutter roll support shaft holding hole 513 of the 1 st holding plate 51 by a fixing portion 351 provided on one side in the CD direction, and a support portion 352 provided on the other side in the CD direction supports the inner surface 31i of the holding portion 311 via a bearing 36.
The servomotor 130 has substantially the same configuration as the servomotor 120. That is, the servomotor 130 includes a body 131, a connecting portion 132, and an output shaft 133, and is fixed to the 2 nd holding plate 52 by the connecting portion 132. The output shaft 133 is connected to the input portion 315, and the cutter roller 31 is driven to rotate about the rotation axis C31.
In the present embodiment, the responsiveness of the driving rotation of the anvil roller 21 is improved by adjusting the input portion 215 (input shaft) of the anvil roller 21 and the support shaft (anvil roller support shaft 25 and bearing 26) that supports the anvil roller 21 as follows. Fig. 6 is a schematic cross-sectional view for explaining the structure of the anvil roller mechanism 20. Since the cutter roller mechanism 30 has substantially the same configuration as the anvil roller mechanism 20, only the anvil roller mechanism 20 will be described below unless otherwise particularly required, and the description of the cutter roller mechanism 30 will be omitted.
As shown in fig. 6, the outer diameter D26 of the support shaft (25, 26) supporting the anvil roller 21 (i.e., the outer diameter of the bearing 26) is larger than the outer diameter D215 of the input portion 215 of the anvil roller 21 (D26 > D215). Since the input portion 215 (input shaft) is a portion directly receiving the driving rotational force from the servo motor 120, if the outer diameter D215 is too large, the influence of the moment of inertia (inertia) becomes large, and there is a possibility that the responsiveness to the input from the servo motor 120 is deteriorated when the anvil roller 21 is driven to rotate. In particular, as in the manufacturing apparatus 10 of the present embodiment, since the anvil roller 21 (holding roller) that holds the continuous sheet such as the back sheet 1 of the disposable diaper needs to have a certain length in the direction (circumferential direction) along the outer peripheral surface 21a, the outer diameter is often increased and the weight is also increased. Therefore, it is preferable to reduce the outer diameter D215 of the input portion 215 as much as possible to avoid an excessive influence of inertia.
On the other hand, if the outer diameter D26 of the support shaft (the anvil roller support shaft 25 and the bearing 26) supporting the anvil roller 21 is too small, there is a possibility that rattling occurs when the anvil roller 21 is rotated about the rotation shaft C21 or it is difficult to obtain sufficient strength to support the weight of the anvil roller 21 itself. Therefore, it is preferable that the outer diameter D26 be as large as possible in the support shafts (25, 26) of the anvil roller 21 to stably support the driven and rotated anvil roller 21.
In the present embodiment, by setting D26 > D215, the influence of inertia when the anvil roller 21 is driven to rotate can be reduced, and the rotation around the rotation axis C21 can be stably supported. This enables the driving rotation of the anvil roller 21 to be accurately controlled in the speed pattern as described with reference to fig. 3. Therefore, a continuous sheet such as the back sheet 1 of the disposable diaper can be stably manufactured.
This structure is also the same for the cutter roller 31. That is, the outer diameter D315 of the input portion 315 (input shaft) of the cutter roll 31 is preferably larger than the outer diameter D36 of the support shaft (cutter roll support shaft 35 and bearing 36) that supports the cutter roll 31 (neither D36 > D315 shown). However, if the above-described relationship (D26 > D215, D36 > D315) is established for at least one of the anvil roller 21 and the cutter roller 31, the speed pattern of the driving rotation can be accurately controlled in the roller, and the above-described effects can be obtained.
In the manufacturing apparatus 10 of the present embodiment, the output shaft 123 of the servomotor 120 and the input portion 215 (input shaft) of the anvil roller 21 (holding roller) are coaxially arranged. That is, the servomotor 120 and the anvil roller 21 have a common rotation axis C21. Therefore, the driving rotational force generated by the servomotor 120 is easily transmitted smoothly from the output shaft 123 to the input portion 215 (input shaft), and the responsiveness when the rotational speed of the anvil roller 21 is periodically accelerated and decelerated is easily improved. This enables the drive and rotation control of the anvil roller 21 to be performed with higher accuracy, and enables a continuous sheet such as the back sheet 1 to be manufactured more stably.
In addition, in the manufacturing apparatus 10, the anvil roller supporting shaft 25 that rotatably supports the anvil roller 21 is fixed and held in position by the supporting shaft holding hole 512 of the 1 st holding plate 51. Also, the servo motor 120 is fixed in position and held by the servo motor holding hole 522 of the 2 nd holding plate 52. The center of the support shaft holding hole 512 is located on the rotation axis C21, and the center of the servomotor holding hole 522 is also located on the rotation axis C21. That is, the support shaft holding hole 512 and the servomotor holding hole 522 are coaxially positioned. Therefore, by using the support shaft holding hole 512 and the servo motor holding hole 522 as references, the position adjustment when the anvil roller 21 and the servo motor 120 are arranged can be accurately and easily performed. This makes it difficult for the rotation axis of the anvil roller 21 and the rotation axis of the servo motor 120 to be displaced, and enables the drive and rotation control of the anvil roller 21 to be performed with higher accuracy.
At least two or more positions of the 1 st holding plate 51 and the 2 nd holding plate 52 are connected to each other via the connection pipe 55 at a predetermined interval, and the positional relationship between the two is fixed. Therefore, the positional relationship between the support shaft holding hole 512 and the servomotor holding hole 522 is fixed, and the coaxial relationship between the anvil roller 21 and the servomotor 120 is easily maintained. This enables the drive and rotation control of the anvil roller 21 to be performed with higher accuracy.
As shown in fig. 5, the input portion 215 (input shaft) of the anvil roller 21 and the servomotor holding hole 522 of the 2 nd holding plate 52 have a portion overlapping in the CD direction (the direction along the rotation axis C21, i.e., the axial direction of the anvil roller 21). That is, at least a part of the input portion 215 (input shaft) is located inside the servomotor holding hole 522. By overlapping both in this way, the width in the CD direction of the manufacturing apparatus 10 can be narrowed in accordance with the amount of the overlap. That is, the manufacturing apparatus 10 can be configured compactly. Therefore, the installation space of the manufacturing apparatus 10 is reduced, and the degree of freedom in designing the apparatus can be easily increased.
In addition, a portion of the holding portion 211 of the anvil roller 21 where the receiving blade 23 is provided and the supporting portion 252 of the anvil roller supporting shaft 25 overlap at least partially in the CD direction (the direction along the rotation axis C21, i.e., the axial direction of the anvil roller 21). The holding portion 211 holds a sheet member such as the continuous body 3a of the target tape on the outer circumferential surface 21a, and performs the cutting process by causing the receiving blade 23 provided in the holding portion 211 and the cutting blade 33 of the cutter roller 31 to cooperate to nip the continuous body 3a of the target tape. Therefore, in the cutting process, a force (load) generated by the pinching with the cutting blade 33 acts on the outer peripheral surface 21a (receiving blade 23) of the holding portion 211 toward the center (rotation axis C21) in the radial direction. That is, at the time of the cutting process, a force in the vertical direction in fig. 5 is applied to the holding portion 211.
In contrast, in the manufacturing apparatus 10 of the present embodiment, a portion overlapping with a region where the receiving blade 23 is provided (i.e., a region where a load is applied) of the holding portion 211 in the CD direction is supported by the support portion 252. That is, the vertical force generated by the pinching with the cutting blade 33 can be supported by the support portion 252. Thus, the anvil roller 21 and the cutter roller 31 can firmly support the load generated during the cutting process by the support portion 252. Therefore, the anvil roller 21 and the cutter roller 31 can be driven and rotated easily and stably.
In the manufacturing apparatus 10, the outer diameter D26 of the support shaft (the anvil roller support shaft 25 and the bearing 26) that supports the anvil roller 21 is preferably equal to or greater than 1/3 of the outer diameter D211 of the holding portion 211 of the anvil roller 21 (D26 ≧ D211 × 1/3). The anvil roller 21 of the present embodiment supports the inner surface 21i of the holding portion 211 by the support shaft. In this case, the thickness of the holding portion 211 is 1/2 ((D211-D26)/2) of the difference between the outer diameter D211 of the holding portion 211 and the outer diameter D26 of the support shaft. Therefore, if the outer diameter D26 of the support shaft is too small, the strength of the support shaft itself becomes weak, and the thickness of the anvil roller 21 becomes large, increasing the weight, and there is a possibility that the anvil roller 21 cannot be stably supported. For example, when D26 < D211 × 1/3, the outer diameter D26 of the support shaft is smaller than the thickness (D211-D26)/2 of the holding portion 211, and the anvil roller 21 may not be firmly supported in the driven rotation. Thus, in the present embodiment, by setting D26 ≧ D211 × 1/3, at least the outer diameter D2 of the support shaft is not smaller than the wall thickness of the holding portion 211. This makes it easy to stably support the anvil roller 21 by the support shafts (25, 26).
As shown in fig. 5, a plurality of air intake holes 24 are provided in the outer peripheral surface 21a of the holding portion 211. The air intake hole 24 communicates with the space inside the cylindrical shape of the anvil roller support shaft 25, and is sucked by a suction device (not shown) such as a compressor provided on one side (left side in fig. 5) in the CD direction with respect to the anvil roller support shaft 25 and the 1 st holding plate 51, whereby suction force can be generated on the outer peripheral surface 21 a. That is, in the present embodiment, the suction mechanism for generating the suction force on the outer peripheral surface 21a is provided on the anvil roller supporting shaft 25 side, and the suction mechanism is not provided on the servo motor 120 side. By disposing the transmission path of the driving rotational force by the servo motor 120 and the suction mechanism independently in this manner, the operations of the two are less likely to interfere with each other, and stable driving rotational control is facilitated. In addition, since the structure of the anvil roller mechanism 20 can be suppressed from becoming complicated, it is advantageous in designing the entire manufacturing apparatus 10.
In the manufacturing apparatus 10, the anvil roller 21 and the cutter roller 31 are the same in number, and the receiving blade 23 provided on the anvil roller 21 and the cutter blade 33 provided on the cutter roller 31 are the same in number. For example, in the example of fig. 5, 2 cutting blades 33 are provided on the cutter roller 31, and 2 receiving blades 23 are provided on the anvil roller 21. In such a configuration, when the driving rotation of the anvil roller 21 and the driving rotation of the cutter roller 31 are synchronized, the cutter blade 33 and the receiving blade 23 corresponding to each other can be made to cooperate with each other in the same combination at all times. Therefore, the operation (cutting process) of cutting the continuous body 3a of the target tape can be stably performed, and the driving/rotating control of the rollers 21 and 31 can be easily performed.
In the example of fig. 5, the output shaft 123 of the servomotor 120 is inserted into the inner surface of the input portion 215 of the anvil roller 21 to connect the two, but the two may be connected by another connection method. For example, the output shaft 123 and the input portion 215 may be connected via a rigid coupling. By using the rigid coupling, the output shaft 123 and the input portion 215 are integrated, and more accurate drive rotation control is facilitated. In this case, since no transmission auxiliary member such as a gear or a belt is provided between the output shaft 123 and the input portion 215 (input shaft), the driving rotational force from the servo motor 120 can be transmitted to the anvil roller 21 without loss. In particular, in the present embodiment, since the anvil roller 21 and the servomotor 120 are arranged coaxially (the rotation axis C21), a rigid coupling is suitably used.
< modification example >
The manufacturing apparatus 10 (anvil roller mechanism 20 and cutter roller mechanism 30) may be modified as follows. Fig. 7 is a schematic cross-sectional view showing a 1 st modification of the manufacturing apparatus 10. Fig. 7 shows a case where the input portion 215 of the anvil roller 21 and the output shaft 123 of the servo motor 120 are connected to each other via a bevel gear 27 in the anvil roller mechanism 20. By providing the bevel gear 27, the output shaft 123 of the servo motor 120 can be arranged to be bent 90 degrees with respect to the input portion 215 of the anvil roller 21 as shown in fig. 7. In this way, since the width of the servo motor 120 in the CD direction is shortened, the manufacturing apparatus 10 can be configured compactly. The cutter roller mechanism 30 may have the same configuration.
Fig. 8 is a schematic cross-sectional view showing a 2 nd modification of the manufacturing apparatus 10. Fig. 8 shows a case where the anvil roller 21 and the cutter roller 31 are rotationally driven by the servo motor 120 without providing the servo motor 130 for rotationally driving the cutter roller 31. In this modification 2, the anvil roller mechanism 20 is basically the same as that of the above-described embodiment. That is, the servo motor 120, the anvil roller 21, and the anvil roller supporting shaft 25 are disposed in a coaxial relationship, respectively. On the other hand, a power transmission mechanism such as a counter gear 28 is connected to the output shaft 123 of the servomotor 120, and a driving rotational force from the servomotor 120 is transmitted to the input portion 315 (input shaft) of the cutting roller 31. Even with such a configuration, the above-described rotation control can be performed at least for the anvil roller mechanism 20, and a composite of continuous sheets such as disposable diapers can be stably manufactured.
Other embodiments are also possible
The embodiments of the present invention have been described above, but the above embodiments are intended to facilitate understanding of the present invention and are not intended to be restrictive explanations of the present invention. Further, the present invention may be modified or improved within a range not departing from the concept thereof, and the present invention naturally includes equivalent configurations thereof.
Description of reference numerals
1 back sheet, 1a middle member (composite of continuous sheets),
a 3 mesh belt (single sheet),
3a continuum of target tape (1 st continuous sheet),
3e at the end side of the tip,
5 outer sheet, 5a continuous fiber sheet (2 nd continuous sheet) of the outer sheet,
10 the manufacture of a device for the production of,
11 target belt conveying means (1 st conveying means), 12 endless belts,
15 adhesive application device, 15N nozzle,
20 anvil roll mechanism (holding roll mechanism),
21 an anvil roller (holding roller), 21a outer peripheral surface, 21i inner side surface,
211 holding part, 215 input part (input shaft),
23 receiving blades, 23a arc surface, 24 suction holes,
25 an anvil roller supporting shaft is provided,
251 a fixing portion, 252 a supporting portion,
26 the bearing is arranged on the bearing seat,
27 helical gear, 28 counter-rotating gear,
30 a cutting roller mechanism is arranged on the upper surface of the roller,
31 cutting roller, 31a outer circumference, 31i inner side,
311 holding part, 315 input part (input shaft),
33 of the cutting edge of the cutting blade,
35 a cutting roll supporting shaft is provided,
351 a fixed portion, a 352 a supporting portion,
a bearing 36 is arranged on the bearing seat,
40 continuous fiber sheet conveying mechanism, 41 rollers, 43a peripheral surface,
51 a first holding plate to be held in the first holding plate,
512 support shaft holding holes, 513 support shaft holding holes, 515 connection pipe holding holes,
52 the 2 nd holding plate, the first holding plate,
522 servo motor holding hole, 523 servo motor holding hole, 525 connection pipe holding hole,
55 is connected with a pipe, and the pipe,
120 servo motor (for anvil roller),
121 a main body part, a 122 connecting part, 123 an output shaft,
130 servo motor (for the cutting roller),
131, 132 connecting part, 133 output shaft,
a C21 rotation axis, a C31 rotation axis, a C41 rotation axis, a C43 rotation axis,
s31 cutting processing position (arrangement position, 1 st prescribed position),
s43 handover processing position (2 nd prescribed position),
swst winding start position.

Claims (12)

1. A method for manufacturing a composite of continuous sheets for absorbent articles, comprising cutting a 1 st continuous sheet to form individual sheet pieces, joining the individual sheet pieces to a 2 nd continuous sheet while leaving a space between the individual sheet pieces adjacent to the 2 nd continuous sheet in a direction of continuity of the 2 nd continuous sheet, and transferring the joined individual sheet pieces to the 2 nd continuous sheet, wherein the composite of continuous sheet for absorbent articles is manufactured,
the manufacturing method comprises the following steps:
a conveying step of conveying the 1 st continuous sheet at a 1 st conveying speed value with the continuous direction of the 1 st continuous sheet as a conveying direction;
a holding roller rotating step of driving the holding roller to rotate so that a rotation direction thereof is along a conveying direction of the 1 st continuous sheet, the holding roller rotating step rotating the holding roller while holding the 1 st continuous sheet on an outer peripheral surface of the holding roller so that the 1 st continuous sheet slides with respect to the outer peripheral surface;
a cutter roller rotating step of rotating a cutter roller disposed at a 1 st predetermined position in the rotating direction of the holding roller along the conveying direction, and driving the cutter roller to rotate;
a cutting generation step of generating the cut sheet by cutting the 1 st continuous sheet with the receiving blade of the cutter roller in cooperation with the cutting blade when the receiving blade of the outer peripheral surface of the holding roller passes the 1 st predetermined position in the rotational direction of the holding roller;
a holding step of holding the sheet-like piece on the outer peripheral surface in a non-slip state; and
a transfer step of transferring the sheet-like sheet held on the outer peripheral surface in a non-slip state by joining the sheet-like sheet to the 2 nd continuous sheet conveyed toward the 2 nd predetermined position at a 2 nd conveyance speed value larger than the 1 st conveyance speed value when the sheet-like sheet passes through a 2 nd predetermined position in the rotation direction,
the holding roller rotates so that the speed value in the rotational direction when the holding roller passes the 2 nd predetermined position becomes the same value as the 2 nd conveyance speed value,
at least one roller of the holding roller and the cutter roller includes:
a support shaft rotatably supporting the one roller; and
an input shaft which is driven to rotate the one roller and is provided integrally with the one roller,
the outer diameter of the support shaft is larger than that of the input shaft.
2. The method of manufacturing a composite of continuous sheets for an absorbent article according to claim 1,
a servomotor for applying a driving rotational force to the one roller,
an output shaft that outputs a driving rotational force from the servomotor is coaxially positioned with the input shaft.
3. The method of manufacturing a composite of continuous sheets for absorbent articles according to claim 2,
is provided with: a 1 st holding plate having a support shaft holding hole for holding the support shaft and fixing a position of the support shaft; and
a 2 nd holding plate provided in parallel with the 1 st holding plate and having a servomotor holding hole for holding the servomotor and fixing a position of the servomotor,
the center of the support shaft holding hole and the center of the servo motor holding hole are coaxially positioned.
4. The method of manufacturing a composite of continuous sheets for absorbent articles according to claim 3,
the 1 st holding plate and the 2 nd holding plate are coupled to each other with a distance in the axial direction of the one roller.
5. The method of manufacturing a composite of continuous sheets for absorbent articles according to claim 3 or 4,
the servo motor holding hole and the input shaft overlap each other in the axial direction of the one roller.
6. The method for producing the composite of continuous sheets for absorbent articles according to any one of claims 2 to 5,
the input shaft is connected to the output shaft of the servomotor by a rigid coupling.
7. The method for producing the composite of continuous sheets for an absorbent article according to any one of claims 1 to 6,
the portion of the outer peripheral surface of the holding roller where the receiving blade is provided and the support shaft overlap each other at least partially in the axial direction of the holding roller.
8. The method for producing the composite of continuous sheets for absorbent articles according to any one of claims 1 to 7,
the outer diameter of the support shaft is greater than or equal to 1/3 of the outer diameter of the holding roller.
9. The method for producing the composite of continuous sheets for absorbent articles according to any one of claims 1 to 7,
a suction mechanism which communicates with the inside of the support shaft from a suction hole provided in the outer peripheral surface of the holding roller and generates suction force for holding the 1 st continuous sheet on the outer peripheral surface,
the suction mechanism is provided on the support shaft.
10. The method for producing the composite of continuous sheets for absorbent articles according to any one of claims 1 to 9,
the number of the receiving blades provided on the holding roller is equal to the number of the cutting blades provided on the cutting roller.
11. The method for producing the composite of continuous sheets for absorbent articles according to any one of claims 1 to 10,
the servo motor for applying a driving rotational force to the holding roller is a servo motor separate from the servo motor for applying a driving rotational force to the cutter roller.
12. A manufacturing apparatus for manufacturing a composite of continuous sheets for absorbent articles by cutting a 1 st continuous sheet to produce a single sheet, joining the single sheet to a 2 nd continuous sheet while leaving a space between the single sheet and a single sheet adjacent to the 2 nd continuous sheet in a direction in which the 2 nd continuous sheet continues, and transferring the single sheet to the 2 nd continuous sheet,
the manufacturing apparatus includes:
a conveying mechanism for conveying the 1 st continuous sheet at a 1 st conveying speed value with the conveying direction of the 1 st continuous sheet as a conveying direction;
a holding roller mechanism that rotationally drives a holding roller along a transport direction of the 1 st continuous sheet, the holding roller mechanism rotating the holding roller while holding the 1 st continuous sheet on an outer peripheral surface of the holding roller so that the 1 st continuous sheet slides with respect to the outer peripheral surface; and
a cutter roller mechanism for driving the cutter roller to rotate while making the rotation direction of the cutter roller disposed at the 1 st predetermined position in the rotation direction of the holding roller along the conveyance direction,
the receiving blade and the cutting blade of the cutter roller cooperate to cut the 1 st continuous sheet to produce the single-sheet when the receiving blade on the outer peripheral surface of the holding roller passes through the 1 st predetermined position in the rotating direction of the holding roller,
holding the sheet-like piece on the outer peripheral surface in a non-slip state,
when the sheet held on the outer peripheral surface in a non-slip state passes through a 2 nd predetermined position in the rotational direction, the sheet is joined to the 2 nd continuous sheet conveyed toward the 2 nd predetermined position at a 2 nd conveyance speed value larger than the 1 st conveyance speed value and the sheet on the outer peripheral surface is transferred,
the holding roller rotates so that the speed value in the rotational direction when the holding roller passes the 2 nd predetermined position becomes the same value as the 2 nd conveyance speed value,
at least one roller of the holding roller and the cutter roller includes:
a support shaft rotatably supporting the one roller; and
an input shaft which is driven to rotate the one roller and is provided integrally with the one roller,
the outer diameter of the support shaft is larger than that of the input shaft.
CN201980082831.9A 2018-12-28 2019-12-25 Method and apparatus for manufacturing composite of continuous sheet of absorbent article Active CN113195179B (en)

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JP2018246514A JP7171428B2 (en) 2018-12-28 2018-12-28 METHOD AND MANUFACTURING APPARATUS FOR MANUFACTURING CONTINUOUS SHEET COMPOSITE OF ABSORBENT ARTICLE
JP2018-246514 2018-12-28
PCT/JP2019/050904 WO2020138200A1 (en) 2018-12-28 2019-12-25 Method for manufacturing continuous sheet composite body for absorbent articles, and manufacturing device

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5311387A (en) * 1976-07-19 1978-02-01 Mitsubishi Heavy Ind Ltd Process for blanking products with a given shape from sheet-shaped material
CN101822591A (en) * 2009-10-19 2010-09-08 尤妮佳股份有限公司 The manufacture method of the complex of the serialgram of absorbent commodity and manufacturing installation
CN102264329A (en) * 2009-02-03 2011-11-30 株式会社瑞光 Method of manufacturing disposable wearing article and device for manufacturing the disposable wearing article
CN102781638A (en) * 2010-02-23 2012-11-14 尤妮佳股份有限公司 Cutter device
CN103079507A (en) * 2010-08-30 2013-05-01 尤妮佳股份有限公司 Method for manufacturing composite for continuous sheet used in absorbent articles, manufacturing apparatus, and method for manufacturing absorbent article
JP2013127406A (en) * 2011-12-19 2013-06-27 Kokusai Keisokki Kk Torsion tester
CN103596532A (en) * 2011-07-29 2014-02-19 尤妮佳股份有限公司 Cutter device for workpiece for absorptive article
CN105455967A (en) * 2015-12-21 2016-04-06 杭州珂瑞特机械制造有限公司 Cotton core embossing apparatus for diaper production line and embossing method thereof
JP6051348B1 (en) * 2016-06-06 2016-12-27 ユニ・チャーム株式会社 Manufacturing method and manufacturing apparatus for composite of continuous sheet according to absorbent article
US20180104112A1 (en) * 2015-04-09 2018-04-19 Gdm S.P.A. A Maker Machine to Manufacture Hygiene Absorbent Articles
CN207822007U (en) * 2017-05-03 2018-09-07 天津市娇柔卫生制品有限公司 A kind of outer cutting apparatus of environment-friendly type production sanitary napkin

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051348B2 (en) * 1983-11-28 1985-11-13 エンタツク株式会社 Method for manufacturing cylindrical wire rings for electric motors
JP5572147B2 (en) 2011-12-19 2014-08-13 国際計測器株式会社 Mechanical testing machine

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5311387A (en) * 1976-07-19 1978-02-01 Mitsubishi Heavy Ind Ltd Process for blanking products with a given shape from sheet-shaped material
CN102264329A (en) * 2009-02-03 2011-11-30 株式会社瑞光 Method of manufacturing disposable wearing article and device for manufacturing the disposable wearing article
CN101822591A (en) * 2009-10-19 2010-09-08 尤妮佳股份有限公司 The manufacture method of the complex of the serialgram of absorbent commodity and manufacturing installation
CN102781638A (en) * 2010-02-23 2012-11-14 尤妮佳股份有限公司 Cutter device
CN103079507A (en) * 2010-08-30 2013-05-01 尤妮佳股份有限公司 Method for manufacturing composite for continuous sheet used in absorbent articles, manufacturing apparatus, and method for manufacturing absorbent article
CN103596532A (en) * 2011-07-29 2014-02-19 尤妮佳股份有限公司 Cutter device for workpiece for absorptive article
JP2013127406A (en) * 2011-12-19 2013-06-27 Kokusai Keisokki Kk Torsion tester
US20180104112A1 (en) * 2015-04-09 2018-04-19 Gdm S.P.A. A Maker Machine to Manufacture Hygiene Absorbent Articles
CN105455967A (en) * 2015-12-21 2016-04-06 杭州珂瑞特机械制造有限公司 Cotton core embossing apparatus for diaper production line and embossing method thereof
JP6051348B1 (en) * 2016-06-06 2016-12-27 ユニ・チャーム株式会社 Manufacturing method and manufacturing apparatus for composite of continuous sheet according to absorbent article
CN207822007U (en) * 2017-05-03 2018-09-07 天津市娇柔卫生制品有限公司 A kind of outer cutting apparatus of environment-friendly type production sanitary napkin

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