JP5719575B2 - Separation apparatus and method for separating continuous sheet excision object - Google Patents

Description

  The present invention relates to an apparatus for separating an excision target portion from a continuous sheet, and a separation method.

  Conventionally, a disposable diaper production line as an example of an absorbent article includes a rotary die cutter device 110 as shown in a perspective view of FIG. Then, when the continuous sheet 1 such as a nonwoven fabric passes through the position of the die cutter device 110 along the conveyance direction, the excision target portion 1t is punched out of the continuous sheet 1 to the leg opening around the diaper 1h. A corresponding hole 1h (hereinafter also referred to as a leg opening 1h) is formed through.

  The die cutter device 110 includes a cutter roll 120 having a cutter blade 121 protruding from an outer peripheral surface 120 s and an anvil roll 130 having a smooth outer peripheral surface 130 s that receives the cutter blade 121. The cutter blade 121 defines a closed region A121 corresponding to the shape of the portion 1t to be punched, that is, the cut target portion 1t, on the outer peripheral surface 120s. Then, the cutter roll 120 and the anvil roll 130 are rotated along the conveying direction of the continuous sheet 1, and the continuous blade 1 is passed through the roll gap G between the rolls 120 and 130, while the cutter blade 121 and By cutting the continuous sheet 1 with the outer peripheral surface 130 s of the anvil roll 130, the cut target portion 1 t is cut from the continuous sheet 1. Then, when the continuous sheet 1 leaves the roll gap G and is sent out to the next process, the excision target portion 1t is sucked and held in the closed region A121 by the suction of the air holes 120h in the closed region A121 of the cutter roll 120. Therefore, the part to be cut 1t remains on the outer peripheral surface 120s of the cutter roll 120 as it is, and with this, the part to be cut 1t is separated from the continuous sheet 1, and the continuous sheet 1 has the leg opening 1h. It becomes empty. It should be noted that the excision target portion 1t sucked and held on the outer peripheral surface 120s of the cutter roll 120 is not disposed opposite to the outer peripheral surface 120s of the cutter roll 120 before the cutter blade 121 reaches the position of the roll gap G next time. It is sucked and collected by the illustrated suction collecting mechanism and removed from the outer peripheral surface 120s of the cutter roll 120 (Patent Document 1).

Special Table 2002-070213

  By the way, when the cutting ability is deteriorated due to wear of the cutter blade 121 or the like, it is not possible to cut completely over the entire circumference of the excision target portion 1t, and an uncut portion may be generated in part. . Even in that case, when the holding force for holding the cutting target portion 1t by the cutter roll 120 is large, the cutting target portion 1t is removed from the continuous sheet 1 when the continuous sheet 1 exits from the roll gap G. Are separated smoothly. That is, when the continuous sheet 1 goes out from the roll gap G, an uncut portion is sequentially torn between the continuous sheet 1 and the cut target portion 1t held on the outer peripheral surface 120s of the cutter roll 120, etc. The part 1t to be cut is separated from the continuous sheet 1.

  However, in the holding method by suction described above, since the excision target portion 1t is not physically sandwiched, it is not possible to expect a holding force large enough to forcibly tear the uncut portion. In some cases, the continuous sheet 1 may be sent to the next process while the cut target portion 1t remains attached to the continuous sheet 1. If the product remains attached, it becomes a defective product and the rate of non-defective products is reduced. On the other hand, if the to-be-cut portion 1t is dropped in the next process and caught in the next process device, line trouble will occur. Invites the production rate of the production line to drop.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a separation apparatus and a separation method that can reliably separate a portion to be cut from a continuous sheet. It is in.

The main invention for achieving the above object is:
It has a 1st roll and a 2nd roll which rotate along the conveyance direction of a continuous sheet, making each other perimeter part oppose, and a roll gap between the 1st roll and the 2nd roll is said continuous sheet Is a device that separates the excision target portion in the continuous sheet from the continuous sheet when passing,
The first roll has a pushing member that pushes the portion to be cut in the continuous sheet into the recess of the outer peripheral portion of the second roll,
The second roll has a gripping part for gripping the part to be excised pushed into the concave part in the concave part ,
The grip portion is fixed to a shaft portion, and can swing based on a reciprocating rotation operation of the shaft portion with the shaft portion serving as a fulcrum.
The shaft is reciprocally rotated around the axis by a cam mechanism,
The cam mechanism is a separation device for a continuous sheet excision target portion , wherein the rotation operation of the second roll is converted into the reciprocating rotation operation and transmitted to the shaft portion .

Also,
Using a first roll and a second roll that rotate along the conveying direction of the continuous sheet while facing the outer peripheral portions of each other, the roll gap between the first roll and the second roll is set to the continuous sheet. Is a method of separating the excision target part in the continuous sheet from the continuous sheet when passing,
Pressing the excision target portion of the continuous sheet into the recess of the outer peripheral portion of the second roll by the pressing member of the first roll;
Gripping the portion to be excised pushed into the recess by a grip portion in the recess of the second roll , and
The grip portion is fixed to a shaft portion, and can swing based on a reciprocating rotation operation of the shaft portion with the shaft portion serving as a fulcrum.
The shaft is reciprocally rotated around the axis by a cam mechanism,
The cam mechanism is a method for separating a portion to be cut of a continuous sheet , wherein the rotation operation of the second roll is converted into the reciprocating rotation operation and transmitted to the shaft portion .
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

  According to the present invention, the excision target portion can be reliably separated from the continuous sheet.

It is a schematic perspective view of the die cutter apparatus 110 as the conventional separation apparatus 110. FIG. 2A is a schematic side view of the separation device 10 according to the first embodiment, and FIG. 2B is a BB arrow view in FIG. 2A. It is an image figure of the continuous sheet | seat 1 in which the leg periphery opening part 1h was formed by the separation apparatus 10, and is a figure corresponded to the III-III arrow line view in FIG. 2A. It is a schematic perspective view of the separation apparatus 10 of 1st Embodiment. 2 is a schematic center longitudinal sectional view of a cutter device 10 for explaining a separation mechanism 50. FIG. 6A to 6D are explanatory diagrams of the operation of the separation device 10. 7A and 7B are schematic center longitudinal sectional views of a first modification according to the first embodiment. FIG. 8A is a schematic center longitudinal sectional view of a second modification according to the first embodiment, and FIG. 8B is a schematic center longitudinal sectional view of the third modification. It is a schematic perspective view of the separation apparatus 10a of 2nd Embodiment. It is a general | schematic center longitudinal cross-sectional view of the separation apparatus 10a. 10A to 10E are operation explanatory views of the separation device 10a. It is a general | schematic center longitudinal cross-sectional view of the modification of 2nd Embodiment.

  At least the following matters will become apparent from the description of the present specification and the accompanying drawings.

It has a 1st roll and a 2nd roll which rotate along the conveyance direction of a continuous sheet, making each other perimeter part oppose, and a roll gap between the 1st roll and the 2nd roll is said continuous sheet Is a device that separates the excision target portion in the continuous sheet from the continuous sheet when passing,
The first roll has a pushing member that pushes the portion to be cut in the continuous sheet into the recess of the outer peripheral portion of the second roll,
The separation apparatus for a continuous sheet excision target part, wherein the second roll has a gripping part for gripping the excision target part pushed into the concave part in the concave part.

According to such a separating apparatus for a continuous sheet excision target portion, the excision target portion pushed into the concave portion of the second roll by the pushing member of the first roll is gripped by the gripping portion in the concave portion. Since the part to be excised is physically sandwiched and held by the second roll, the second roll can hold the part to be excised firmly with a large holding force. Therefore, even when cutting is not sufficient such that there is an uncut portion between the continuous sheet and the portion to be cut, when the continuous sheet comes out from the roll gap, the second roll has a large holding force of the gripping portion. By holding the excision target portion, the excision target portion can be separated from the continuous sheet while tearing the uncut portion, and thus the separation can be reliably performed.
In addition, since the gripping portion is provided in the concave portion of the outer peripheral portion of the second roll, the gripping portion can be positioned very close to the excision target portion when performing the gripping operation, and as a result, the gripping portion is excised. The target portion can be reliably gripped without losing grip.

A separation device for the part to be cut of the continuous sheet,
When the pushing member protruding from the outer peripheral portion of the first roll and the recessed portion of the second roll pass through the position of the roll gap, the pushing member enters the recessed portion, thereby Push the target part into the recess,
It is desirable that the gripping portion in the recess grips the excision target portion pushed into the recess.
According to such a separation device for the continuous sheet excision target portion, the pushing member enters the concave portion of the second roll, so that the excision target portion is reliably guided to the position of the grip portion in the concave portion of the second roll. As a result, it can be reliably gripped.

A separation device for the part to be cut of the continuous sheet,
The first roll is a cutter roll having a cutter blade on the outer periphery,
The second roll is an anvil roll that receives the cutter blade at the outer periphery,
The cutter blade divides a closed region having a contour shape corresponding to the excision target portion into an outer peripheral portion of the first roll, and the pushing member is provided in the closed region,
In the roll gap, it is preferable that the first roll and the second roll rotate so that the pushing member and the concave portion face each other.
According to such a separation device for the cutting target portion of the continuous sheet, since the pushing member is provided on the cutter roll and the grip portion is provided on the anvil roll, a cutting process for cutting the cutting target portion from the continuous sheet, Both the separation process of separating the cut portion to be cut from the continuous sheet can be performed only by the pair of rolls. As a result, the equipment can be downsized and the number of parts of the equipment can be reduced.

A separation device for the part to be cut of the continuous sheet,
The outer periphery of the first roll has a cutter roll that rotates along the transport direction while facing the outer periphery,
The outer peripheral portion of the cutter roll has a cutter blade that divides a closed region of a contour shape corresponding to the cutting target portion into the outer peripheral portion,
In the roll gap between the first roll and the cutter roll, the cutting target part in the continuous sheet is sandwiched between the cutter blade and the outer peripheral part of the first roll, so that the cutting target part is removed from the continuous sheet. Cut and
In the roll gap, it is desirable that the cutter roll and the first roll rotate so that the closed region related to the cutter blade and the pushing member face each other.
According to such a separation apparatus for the continuous sheet excision target part, the cutter roll is provided with neither a pushing member nor a gripping part. Therefore, in general, it is not necessary to perform any processing or additional parts for providing a pushing member or a gripping portion for a cutter roll that requires high dimensional accuracy from the viewpoint of cutting accuracy improvement. High dimensional accuracy can be maintained.

A separation device for the part to be cut of the continuous sheet,
An intrusion mechanism for intruding the pushing member from the outer periphery of the first roll to the outside of the first roll;
The pushing member passes through the position of the roll gap with the cutter roll in a submerged state retracted into the outer periphery of the first roll,
The pushing member preferably protrudes from the outer peripheral portion of the first roll and passes through the position of the roll gap with the second roll.

According to such a separating device for the continuous sheet excision target portion, when the cutter blade cuts the excision target portion in the gap between the rolls, the first roll as the anvil roll is in the submerged state in which the pressing member is retracted. Receive. Therefore, it is possible to reliably prevent the pushing member from coming into contact with the excision target portion of the continuous sheet and the like, and the sheet can be cut according to the target shape of the excision target portion.
In addition, since the pushing member is in the protruding state when passing the position of the roll gap between the second roll, the excision target portion is reliably pushed into the concave portion of the second roll, The excision target portion can be reliably gripped by the grip portion in the recess.

A separation device for the part to be cut of the continuous sheet,
The continuous sheet after passing through the roll gap between the first roll and the second roll is preferably wound around the outer circumference of the first roll at a predetermined winding angle and conveyed.
According to such a separation apparatus for the continuous sheet excision target portion, after passing through the roll gap, the continuous sheet is conveyed in contact with the outer peripheral portion of the first roll, but the excision target portion is the outer periphery of the second roll. It is held by the part and moves. Therefore, the excision target part can be reliably separated from the continuous sheet.

A separation device for the part to be cut of the continuous sheet,
The pushing member is a plate member arranged along the thickness direction in the rotation direction of the first roll,
It is desirable that the gripping part sandwiches and holds the excision target part together with the pushing member by sandwiching the excision target part pushed into the pushing member in the plate thickness direction.
According to such a separation device for the excision target part of the continuous sheet, the gripping part sandwiches and grips the excision target part together with the pushing member, so that the excision target part can be reliably gripped.

A separation device for the part to be cut of the continuous sheet,
At a position downstream of the position of the roll gap with the first roll in the rotation direction of the second roll, a recovery mechanism that recovers the excision target portion is disposed opposite the outer peripheral portion of the second roll. Has been
When the gripping part passes through the position of the recovery mechanism by the rotation of the second roll, the gripping part preferably releases the excision target part.
According to such a separation device for a continuous sheet excision target part, the excision target part is recovered by the recovery mechanism. Therefore, it is possible to reliably prevent the excision target portion from dropping from the continuous sheet and being caught in another apparatus in the next step.

A separation device for the part to be cut of the continuous sheet,
An air hole that adsorbs the excision target portion to the peripheral portion is provided in the peripheral portion of the pushing member in the outer peripheral portion of the first roll,
When the intake hole passes through the roll gap, the air hole preferably performs an intake operation.
According to such a separation apparatus for a continuous sheet excision target portion, when the excision target portion is gripped by the gripping portion of the second roll, the excision target portion of the first roll is moved by the intake air from the air hole. It can be reliably held on the outer periphery. Therefore, the excision target part can be prevented from falling off.

Also,
Using a first roll and a second roll that rotate along the conveying direction of the continuous sheet while facing the outer peripheral portions of each other, the roll gap between the first roll and the second roll is set to the continuous sheet. Is a method of separating the excision target part in the continuous sheet from the continuous sheet when passing,
Pressing the excision target portion of the continuous sheet into the recess of the outer peripheral portion of the second roll by the pressing member of the first roll;
The method for separating a cut target portion of a continuous sheet, comprising: gripping the cut target portion pushed into the concave portion with a grip portion in the concave portion of the second roll.

According to such a method for separating the continuous sheet excision target portion, the excision target portion pushed into the concave portion of the second roll by the pushing member of the first roll is gripped by the gripping portion in the concave portion. Since the part to be excised is physically sandwiched and held by the second roll, the second roll can hold the part to be excised firmly with a large holding force. Therefore, even when the uncut portion is insufficient between the continuous sheet and the portion to be cut, when the continuous sheet comes out of the roll gap, the second roll is Thus, by holding the excision target portion, the excision target portion can be separated from the continuous sheet while tearing the uncut portion, and thus the separation can be reliably performed.
In addition, since the gripping portion is provided in the concave portion of the outer peripheral portion of the second roll, the gripping portion can be positioned very close to the excision target portion when performing the gripping operation, and as a result, the gripping portion is excised. The target portion can be reliably gripped without losing grip.

=== First Embodiment ===
2A to 4 are explanatory diagrams of the separation device 10 according to the first embodiment. 2A is a schematic side view of the separating apparatus 10, and FIG. 2B is a view taken along the line BB in FIG. 2A. FIG. 3 is an image view of the continuous sheet 1 in which the leg opening 1h is formed by the separating device 10, and corresponds to a view taken along arrows III-III in FIG. 2A. FIG. 4 is a schematic perspective view of the separation device 10.

  As shown in FIGS. 2A to 4, the separation device 10 is a rotary die cutter device 10. This cutter device 10 is used in a disposable diaper production line as an example of an absorbent article. And as shown in FIG. 3, the product of the diaper in a conveyance direction is obtained by intermittently excising the substantially circular excision target portion 1t from the flexible continuous sheet 1 such as a nonwoven fabric continuously conveyed in the conveyance direction in the conveyance direction. The leg opening 1h is formed through the continuous sheet 1 at a pitch P.

  Hereinafter, the conveyance direction of the continuous sheet 1 is also referred to as “MD direction”, and the width direction of the continuous sheet 1 is also referred to as “CD direction” or “left-right direction”. Incidentally, the vertical direction, which is the vertical direction, is a part of the MD direction, and the direction orthogonal to both the vertical direction and the horizontal direction is also referred to as the “front-rear direction”.

  As shown in FIGS. 2A and 2B, the cutter device 10 includes a cutter roll 20 as a first roll supported rotatably around a rotation axis C <b> 20 parallel to the CD direction via a bearing member 12, and the cutter roll 20. And an anvil roll 30 as a second roll supported rotatably around a rotation axis C30 parallel to the CD direction via a bearing member 13, and a drive for driving and rotating the pair of rolls 20 and 30 The mechanism 40 is separated from the continuous sheet 1 and separated from the continuous sheet 1 by the rolls 20 and 30, which are provided in the cutter roll 20 and the anvil roll 30. A suction recovery mechanism 70 for sucking and recovering the excision target portion 1t.

  And when passing the continuous sheet 1 along the MD direction through the roll gap G between the cutter roll 20 and the anvil roll 30 that are driven to rotate along the MD direction as the conveying direction, the outer peripheral surface of the cutter roll 20 By sandwiching the continuous sheet 1 between the cutter blade 21 of 20 s and the outer peripheral surface 30 s of the anvil roll 30, as shown in FIG. 3, the excision target portion 1 t has a shape corresponding to the leg opening 1 h from the continuous sheet 1. The cut target portion 1t is separated from the continuous sheet 1 by the separation mechanism 50, and is then discharged out of the production line by the suction recovery mechanism 70 of FIG. 2A.

  Incidentally, as described above, when the cutter roll 20 and the anvil roll 30 rotate in the MD direction, the rotation direction Dc20 around the rotation axis C20 of the cutter roll 20 (clockwise in the example of FIG. 2A), It goes without saying that the rotation direction Dc30 (counterclockwise in the example of FIG. 2A) around the rotation axis C30 of the anvil roll 30 is opposite to each other. Hereinafter, each component 20, 30, 40, 50, 70 will be described.

  As shown in FIG. 2B, the cutter roll 20 is made of a metal such as steel. The roll body 22 is a roll body, and the small diameter portions 23 and 23 are formed concentrically at both ends in the CD direction. Have. Each small diameter portion 23 is provided with the bearing member 12 described above. On the other hand, a cutter blade 21 is provided on the outer peripheral surface 20 s of the roll body 22. The cutter blade 21 is an endless blade having a substantially annular shape in plan view that protrudes from the outer peripheral surface 20 s following the shape of the portion to be cut 1 t that is the shape to be cut (that is, the shape of the leg opening 1 h). 21 divides a closed region A21 having a contour shape corresponding to the excision target portion 1t on the outer peripheral surface 20s. In addition, this closed area | region A21 is corresponded to the "closed area | region" which concerns on a claim, and this closed area | region A21 is also called "cutter blade division area | region A21" hereafter.

  As shown in FIG. 4, a plate-like push-in member 52 having a tip 52 a protruding outward from the cutter blade 21 is fixed to the cutter blade partition region A <b> 21. The pushing member 52 functions as a part of the separation mechanism 50 that separates the cut target portion 1t cut from the continuous sheet 1 from the continuous sheet 1, and this will be described in the separation mechanism 50.

  The turning radius of the tip of the cutter blade 21 is set to be approximately equal to, for example, a value obtained by dividing the product pitch P of the diaper (FIG. 3) by 2π (a value twice the circumference). Thus, when the cutter roll 20 rotates once, the continuous sheet 1 is fed in the MD direction by a length P substantially corresponding to one piece of product.

  In some cases, as shown in FIG. 2B, the cutter roll 20 may have a pair of bearer portions 25 and 25. The bearer portion 25 is a large-diameter portion provided integrally at both ends in the CD direction of the roll body portion 22 of the cutter roll 20 in order to rotate the cutter roll 20 and the anvil roll 30 at the same peripheral speed. It is. That is, during the steady operation of the die cutter device 10, the bearer portions 25, 25 are pressed against the outer peripheral surface 30s of the anvil roll 30, and both the cutter roll 20 and the anvil roll 30 are based on the substantially static frictional force generated by the pressure contact. The peripheral speed is almost the same.

  As shown in FIG. 2B, the anvil roll 30 is also made of a metal such as steel, and a roll body 32 as a roll body, and small-diameter portions 33 and 33 respectively formed concentrically at both ends in the CD direction. Have. The small-diameter portion 33 is provided with the bearing member 13 described above. The roll body 32 is, for example, a flat roll whose outer peripheral surface 30s is flat in the CD direction. That is, in this example, the radius of the roll body 32 is the same diameter over substantially the entire length in the CD direction. However, the roll profile (contour shape) of the outer peripheral surface 30 s of the roll body portion 32 may be changed from flat as long as the cutting property of the cutter blade 21 and the press contact property to the bearer portion 25 are not hindered.

  Moreover, as shown in FIG. 2B and FIG. 4, a recessed portion 60 is formed in a predetermined region of the outer peripheral surface 30 s of the roll body portion 32 of the anvil roll 30. This predetermined area is a position where the cutter blade section area A21 faces when the cutter blade section area A21 passes through the position of the roll gap G. Therefore, when the concave section 60 passes through the position of the roll gap G, It faces the cutter blade partition area A21. The concave portion 60 accommodates a gripping portion 62 that forms a part of the separation mechanism 50. This will also be described in the separation mechanism 50.

  The cutter roll 20 and the anvil roll 30 are brought into pressure contact with each other by roll body portions 22 and 32 by a pressure contact mechanism such as the hydraulic cylinders 17 and 17. If it demonstrates in detail with reference to FIG. 2A and FIG. 2B, the said die cutter apparatus 10 has the housing member 15 for supporting these cutter rolls 20 and anvil rolls 30. FIG. The housing member 15 has a pair of substantially rectangular frames 15a and 15a standing on both sides in the CD direction. Inside each frame 15a, a small diameter portion 23 of the cutter roll 20 and a small diameter of the anvil roll 30 are provided. The part 33 is arranged side by side in the front and back in a state of being fitted to the bearing members 12 and 13, respectively. Further, hydraulic cylinders 17 and 17 are interposed between the bearing members 12 and 12 of the cutter roll 20 and the corresponding frames 15a and 15a, respectively. The cutter roll 20 can be moved back and forth via the bearing members 12 and 12. Therefore, if the hydraulic pressure value of the hydraulic oil that operates the hydraulic cylinders 17 and 17 is appropriately set, the cutter roll 20 and the anvil roll are obtained with the pressure contact force according to the hydraulic pressure value while obtaining the reaction force from the frames 15a and 15a. 30 is in pressure contact with the roll body portions 22 and 32 of each other. Note that an air cylinder or a feed screw mechanism may be used as the pressure contact mechanism instead of the hydraulic cylinder 17.

  The drive mechanism 40 includes a motor (not shown) as a drive source and a universal joint that concentrically connects the drive rotation shaft of the motor and the end of the cutter roll 20 to transmit the drive rotational force of the motor to the cutter roll 20. And the drive transmission gears 43 and 43 for driving and rotating the anvil roll 30 by transmitting the driving rotational force of the cutter roll 20 to the anvil roll 30. Drive transmission gears 43 and 43 are provided at both the end portion of the small diameter portion 23 of the cutter roll 20 and the end portion of the small diameter portion 33 of the anvil roll 30, respectively. Force is transmitted to the anvil roll 30.

Here, the gear ratio (rotation ratio) is 1: 1, and therefore the cutter roll 20 and the anvil roll 30 rotate so that the number of rotations is equal to each other. Further, the turning radius of the cutter blade 21 of the cutter roll 20 and the radius of the roll body 32 of the anvil roll 30 are set to be equal.
Therefore, as shown in FIG. 2B, the gears 43 and 43 are once meshed so that the cutter roll 20 and the anvil roll 30 are in pressure contact with each other at the reference positions P20 and P30 in the circumferential direction (rotational directions Dc20 and Dc30). After that, thereafter, the same parts in the circumferential direction are always associated with each other so as to be in pressure contact with each other. In this example, as shown in FIG. 2B, the reference position P20 and the reference position P30 are respectively set to the pushing member 52 of the cutter blade partition region A21 and the concave portion 60 described above. When the pushing member 52 and the recess 60 of the anvil roll 30 pass through the roll gap G, the pushing member 52 and the recess 60 face each other. Incidentally, such a correspondence relationship between the opposed positions is maintained unless the meshing state of the drive transmission gears 43 and 43 is released.

FIG. 5 is a schematic center longitudinal sectional view of the cutter device 10 for explaining the separation mechanism 50. Note that in FIG. 5, a cross-sectional line of a part of the configuration is omitted.
The separation mechanism 50 separates the resection target part 1t fitted inside from the leg opening 1h that is cut and formed in the continuous sheet 1 by the cutter roll 20 and the anvil roll 30, and the separated resection target part 1t is separated. It is delivered to the suction recovery mechanism 70.

  The separation mechanism 50 includes (1) a pushing member 52 provided on the cutter roll 20 side to push the cut target portion 1t of the continuous sheet 1 toward the anvil roll 30 when passing the position of the roll gap G; (2) a gripping portion 62 provided on the anvil roll 30 side to grip the pushed excision target portion 1t.

  When the continuous sheet 1 moves away from the outer peripheral surface 30 s of the anvil roll 30 through the position of the roll gap G, the gripping part 62 grips the excision target part 1 t inside the anvil roll 30. By continuing, the to-be-removed part 1t is separated from the leg opening 1h of the continuous sheet 1. Incidentally, at this time, since the gripping part 62 physically grips the excision target part 1t, the holding force of the gripping part 62 to the excision target part 1t is sufficiently large. Therefore, even if there is some uncut portion between the leg opening 1h and the resection target portion 1t, the grip portion 62 tears the uncut portion based on the large holding force. Thus, it is possible to separate the excision target portion 1t from the leg periphery opening 1h.

  The pushing member 52 is provided at a substantially flat central portion of the cutter blade partition region A21 on the outer peripheral surface 20s (corresponding to the outer peripheral portion) of the cutter roll 20. The pushing member 52 is a metal or resin plate-like member having a tip 52a pointed in a substantially triangular blade shape, and the thickness direction of the pushing member 52 is aligned with the circumferential direction Dc20 (rotation direction Dc20) of the cutter roll 20. And is fixed by an appropriate fixing member (not shown) such as a bolt so that it cannot move. And the substantially triangular blade-shaped front-end | tip part 52a protrudes in the rotation radial direction Dr20 rather than the cutter blade 21 with the protrusion amount of 3 mm-10 mm, for example, Thereby, the pushing member 52 is the position of the roll gap G. When passing through, the substantially central portion of the excision target portion 1t is pushed outward in the rotational radius direction Dr20 of the cutter roll 20. That is, the distal end portion 52a of the pushing member 52 comes into contact with the substantially central portion of the excision target portion 1t, and gradually pushes the approximate central portion toward the anvil roll 30, and finally, of the excision target portion 1t. The substantially central part is folded in half into a substantially V shape and is pushed toward the anvil roll 30.

  On the other hand, on the outer peripheral surface 30 s (corresponding to the outer peripheral portion) of the anvil roll 30, a recess 60 that receives the cutting target portion 1 t and the pushing member 52 is formed corresponding to the pushing of the cutting target portion 1 t by the pushing member 52. ing. That is, when the pushing member 52 passes the position of the roll gap G, the concave portion 60 is formed in a portion of the outer peripheral surface 30s of the anvil roll 30 to which the tip portion 52a of the pushing member 52 should face. Reference numeral 60 denotes a sufficient depth along the rotational radial direction Dr30 of the anvil roll 30 that can accommodate the distal end portion 52a of the pushing member 52. In addition, an opening / closing type gripping part 62 is provided in the concave part 60, and the opening / closing type gripping part 62 is opened / closed at a substantially central portion of the excision target part 1 t pushed into a substantially V shape by the pushing member 52. The pushing member 52 is sandwiched and gripped by the operation. Then, as the gripping part 62 is moved away from the position of the roll gap G by the rotation of the anvil roll 30, only the pushing member 52 is gradually pulled out of the gripping part 62 in the closed state, and finally the gripping part 62 Only the excision target portion 1t is left and gripped. And when the said grip part 62 passes the position of the suction collection | recovery mechanism 70 with the further rotation of the anvil roll 30, the grip part 62 cancels | releases the pinching state by opening operation | movement, and is object to be excised The part 1t is released, whereby the excision target part 1t is sucked and collected by the suction collecting mechanism 70.

  In this example, the inner wall 60w on the downstream side of the recess 60 is used as one of the pair of chucks that the open / close type gripper 62 should have, and the gripper 62 has a configuration. Simplify. That is, in the recess 60, a gripping arm 63 that forms a gripping part 62 is provided in a pair with the above-described inner wall surface 60 w, and this gripping arm 63 is partly from the outer peripheral surface 30 s of the anvil roll 30. It is housed in the recess 60 in a completely housed state where it does not jump out, and is configured to be swingable along the rotational direction Dc30 of the anvil roll 30. Then, the gripping arm 63 pivots to the downstream side of the rotational direction Dc30 with the proximal end portion 63b positioned inward in the rotational radial direction Dr30 of the anvil roll 30 as a fulcrum, so that the downstream side in the recess 60 The saddle-shaped head portion 63ah of the distal end portion 63a that is the swinging end portion of the grip arm 63 is closed with respect to the inner wall surface 60w of the grip member 63, thereby sandwiching the excision target portion 1t, and from this state, the grip arm 63 is upstream of the rotation direction Dc30. By rotating to the side, the hook-shaped head portion 63ah of the tip portion 63a which is the swinging end portion of the grip arm 63 is opened away from the inner wall surface 60w, so that the sandwiched excision target portion 1t is released.

  As described above, an existing drive mechanism such as a motor can be applied to the drive mechanism 65 that opens and closes the grip arm 63. In this example, a cam mechanism 67 is used as shown in FIG. That is, the drive mechanism 65 communicates with the above-described recess 60 of the anvil roll 30 and is inserted in the anvil roll 30 along the CD direction in the anvil roll 30 and the hole is inserted along the CD direction. And a cam mechanism 67 for reciprocatingly rotating the shaft portion 66 around the axis C66 along the CD direction.

  The shaft portion 66 is rotatably supported around the shaft core C66 by a bearing member (not shown) such as a sliding bearing provided in the hole. And the base end part 63b of the holding | gripping arm 63 is being fixed to the axial part 66 so that relative movement is impossible. Therefore, based on the reciprocating rotation of the shaft portion 66, the tip end portion 63a of the gripping arm 63 swings with the shaft portion 66 as a fulcrum, so that the gripping arm 63 is opened and closed.

  The cam mechanism 67 converts the rotation operation of the anvil roll 30 into a reciprocating rotation operation and transmits it to the shaft portion 66. As a result, the shaft portion 66 reciprocates once for each rotation of the anvil roll 30, and as a result, the grip arm 63 is moved for each resection target portion 1t related to the leg opening 1h. Open and close.

  In this example, a plate cam 67c is used as the cam 67c of the cam mechanism 67 that performs the operation conversion. The plate cams 67c are provided on both the left and right sides in the CD direction of the roll body 32 of the anvil roll 30, respectively. Each of the plate cams 67c has substantially disk members having the same shape as the main body, and the normal direction of the disk surface 67cs faces the CD direction so that the plate cam 67c cannot move to the foundation of the production line via the stay member 67s. Standing and fixed. And the outer peripheral surface 67ca of this disc member 67c is a cam surface, that is, the position of the outer peripheral surface 67ca is changing with respect to the rotational radius direction Dr30 of the anvil roll 30 along the rotational direction Dc30 of the anvil roll 30. Thus, a cam curve is set on the outer peripheral surface 67ca. Further, in order to correspond to each plate cam 67c, both end portions 66e and 66e of the shaft portion 66 protrude from both end surfaces 32a and 32a of the roll body portion 32 of the anvil roll 30, and each end portion of the shaft portion 66. 66e is provided with a follower arm 68, respectively. That is, the base end portion 68b of the driven arm 68 is connected to the above-described shaft portion 66 so as not to be relatively movable, whereby the tip end portion 68a as the swing end swings around the shaft portion 66 as a fulcrum. Further, a cam follower 69 as a contact is rotatably supported on the tip portion 68a, and the cam follower 69 can abut on the outer peripheral surface 67ca of the plate cam 67c serving as the cam surface and roll on the outer peripheral surface 67ca. It is.

  Therefore, when the anvil roll 30 rotates, the driven arm 68 circulates around the plate cam 67c while bringing the cam follower 69 as a contact into contact with the outer peripheral surface 67ca of the plate cam 67c. In accordance with the rotational position of the driven arm 68, the tip end portion 68a of the driven arm 68 is moved in the rotational radius direction Dr30 of the anvil roll 30 via the cam follower 69, and the shaft portion is moved based on the swinging motion of the driven arm 68. 66 reciprocates. When the shaft portion 66 reciprocates, the grip arm 63 swings, and the grip arm 63 is driven to open and close in this way. Therefore, if the cam curve of the plate cam 67c is set in association with the target opening / closing operation to be performed by the gripping arm 63, the closing operation starts immediately before the gripping arm 63 passes the position of the roll gap G, as will be described later. Then, the gripping arm 63 can be opened and closed such that the gripping arm 63 is opened when the gripping arm 63 reaches the suction collection mechanism 70 after the passage.

  Incidentally, in the above example, the plate cams 67c are provided on both the left and right sides in the CD direction, but either one may be provided. However, from the viewpoint of the stability of the opening / closing operation of the grip arm 63, it is preferable that the grip arm 63 is provided on both the left and right sides as in the example of FIG.

  Further, the cam follower 69 at the tip end portion 68a of the driven arm 68 is contacted with the cam surface 67ca without leaving the cam surface 67ca over the entire circumference of the plate cam 67c by an appropriate spring member such as a coil spring. Needless to say, a force directed inward in the radial direction Dr30 of the anvil roll 30 is applied.

  A suction / recovery mechanism 70 (corresponding to a recovery mechanism) shown in FIG. 5 is for suction-recovering the excision target portion 1t held on the outer peripheral surface 30s of the anvil roll 30 by the grip portion 62. Specifically, the suction recovery mechanism 70 has a duct 70d having an opening 70a at the end as a main body, and the duct 70d is connected to an appropriate blower (not shown), whereby the opening 70a serves as a suction port that can suck air. Function. And this opening part 70a is arrange | positioned facing the outer peripheral surface 30s of the anvil roll 30 in the downstream position rather than the roll gap G in the rotation direction Dc30 of the anvil roll 30. Therefore, when the gripping part 62 of the anvil roll 30 passes through the position of the opening 70a, the gripping part 62 opens and releases the excision target part 1t, so that the excision target part 1t is sucked into the opening part 70a. To be recovered.

  According to the die cutter device 10 configured as described above, the leg-periphery opening 1h is formed in the continuous sheet 1 by operating as follows, and the excision target portion 1t that is a trim piece of the leg-periphery opening 1h is formed. Separate from the leg opening 1h and collect. 6A to 6D are explanatory diagrams of the operation.

  First, as shown in FIG. 6A, the continuous sheet 1 is wound around the cutter roll 20 at a predetermined winding angle θ, and is rotated by the cutter roll 20 while being substantially integrated with the outer peripheral surface 20 s of the cutter roll 20. Continuously conveyed in the MD direction. In addition, the position of the roll gap G between the cutter roll 20 and the anvil roll 30 is located within the range where the winding angle θ is wound.

  6A to 6C, when the cutter blade 21 passes the position of the roll gap G due to the rotation of the cutter roll 20, the outer peripheral surface 30s of the anvil roll 30 becomes the receiving blade of the cutter blade 21. Thus, the cutter blade 21 cuts the cut target portion 1t from the continuous sheet 1 with the contour shape of the cutter blade partition region A21. At this time, since the pushing member 52 protrudes outward in the rotational radius direction Dr20 of the cutter roll 20 rather than the cutter blade 21, the ablation target portion 1t is roughly abbreviated as shown in FIGS. 6A and 6B based on the protrusion. Although the center portion is slightly protruded outward, the cutting position accuracy of the cutter blade 21 is not significantly deteriorated, so this is not a big problem.

  Further, as shown in FIGS. 6A and 6B, the pushing member 52 enters the concave portion 60 of the anvil roll 30 substantially simultaneously with the cutting of the portion 1 t to be cut by the cutter blade 21, and thereby the pushing member 52. Pushes the part 1t to be cut into the recess 60. At this time, as shown in FIG. 6A, the grip arm 63 of the recess 60 is already in an open state, that is, a state where the push-in member 52 and the excision target portion 1t are allowed to enter. Therefore, as if the gears mesh with each other, the pushing member 52 that passes through the position of the roll gap G gradually enters the recess 60 that also passes through the position of the roll gap G, that is, the recess 60 shown in FIG. It enters the clearance S63 between the inner wall surface 60w on the downstream side and the grip arm 63. In this intrusion process, the resecting target portion 1t is pushed by the pushing member at its substantially central portion, and as shown in FIG. 6B, the resecting target portion 1t is folded in a substantially V shape with the pushing position as the folding position. Is done.

  Then, based on the driving of the cam mechanism 67 described above, the gripping arm 63 is closed as shown in FIG. 6B, so that the hook-shaped head 63 ah of the distal end portion 63 a of the gripping arm 63 is formed by the inner wall surface 60 w of the recess 60. Then, the pushing member 52 is sandwiched and gripped by the substantially central portion of the part to be cut 1t in a folded state. In this example, the closing start timing is set immediately before the gripping arm 63 passes the position of the roll gap G, and the closing end timing is set immediately after passing the position of the roll gap G. As long as the above-described pushing member 52 and the like can be smoothly intruded, the present invention is not limited to this. For example, the closing start timing may be during the gripping arm 63 passing through the position of the roll gap G or immediately after the closing, and the closing end timing may be immediately before passing through the position of the roll gap G. And it ’s okay to pass

  Then, as shown in FIG. 6C, when both of the push-in member 52 and the grip arm 63 finish passing through the position of the roll gap G, the rotation of the cutter roll 20 and the anvil roll 30 causes this time. The pushing member 52 is gradually pulled out from between the gripping arm 63 in the closed state and the inner wall surface 60w of the recess 60 so that the meshing state of the gears can be released by rotation, and finally the pushing member 52 is moved to the anvil roll 30. When it is completely removed from the recess 60, only the excision target portion 1t remains between the hook-shaped head 63ah of the grip arm 63 and the inner wall surface 60w of the recess 60 (FIG. 6C).

  In order to smoothly perform this extraction, the portion of the push-in member 52 that comes into contact with the resection target portion 1t may be subjected to a process for reducing frictional force such as Teflon coating, or the retraction target in the grip arm 63. A treatment for increasing the frictional force, such as forming a plurality of grooves, may be applied to the gripping surface of the bowl-shaped head 63ah that comes into contact with the portion 1t.

  Further, as shown in FIG. 6C, the continuous sheet 1 after passing through the position of the roll gap G is wound around the cutter roll 20 which is the roll having the pushing member 52 and conveyed toward the next process. Since the excision target portion 1t is held by the holding portion 62 that is the holding arm 63, it is held by the anvil roll 30 that is the opposite roll to the roll 20. Therefore, after leaving the roll gap G, the conveyance route of the continuous sheet 1 and the conveyance route of the cut target portion 1t are respectively divided into a cutter roll 20 side route and an anvil roll 30 side route, This also contributes to the reliable and smooth separation of the excision target portion 1t from the continuous sheet 1.

  Then, as shown in FIG. 6D, when the gripping arm 63 passes the position of the suction recovery mechanism 70 based on the further rotation of the anvil roll 30, the gripping arm 63 opens to release the excision target portion 1t. Thus, the excision target portion 1t is sucked and collected by the suction collecting mechanism 70. At the time of this suction recovery, the excision target portion 1t is folded in half by the gripping action of the grip arm 63 described above, and is naturally folded small. It is possible to effectively reduce the bulk of the excision target portion 1t in a storage container (not shown) to be finally stored, and to reduce the storage container.

  By the way, desirably, as shown in FIG. 4 and FIG. 5, a plurality of air holes 20h, 20h... Are provided in the cutter blade partition region A21 (corresponding to the peripheral portion of the pushing member 52), and at least these air holes 20h When passing through the position of the gap G, these air holes 20h may be inhaled. In this way, when cutting the excision target portion 1t from the continuous sheet 1, the excision target portion 1t can be adsorbed and held in the cutter blade partition region A21, so that the cutting can be stabilized and the excision target portion 1t can be stabilized. Separation from the continuous sheet 1 can also be performed stably.

  Here, the stabilization effect at the time of separation, which is the latter, will be described in more detail. In the cut target portion 1t at this time, at least the downstream portion 1td is cut from the continuous sheet 1 (FIG. 6B). ), The portion 1td on the downstream side may turn over from the cutter roll 20 and flow to the upstream side due to the wind pressure caused by the rotational conveyance of the cutter roll 20. Then, when the pushing member 52 in FIG. 6B guides the substantially central portion of the portion to be cut 1t to the concave portion 60 of the anvil roll 30, the turned-down portion 1td is folded in a zigzag shape (accordion shape), Then, the gap between the gripping arm 63 and the inner wall surface 60w of the recess 60 gets into the gap tightly, and as a result, the production line may be forced to stop.

  Therefore, in order to prevent this, when the pushing member 52 is pushed in, it is preferable that the portion other than the substantially central portion in the excision target portion 1t is sucked and held in the cutter blade partition region A21. Incidentally, the wind pressure acts on the downstream portion 1td more than the upstream portion 1tu in the excision target portion 1t in FIG. 6B, and therefore, the downstream portion 1td is more likely to be turned. As in the example 5, it is desirable to provide the air hole 20 h described above only at least in the region A 21 d downstream of the pushing member 52 in the cutter blade partition region A 21.

  The following is an example of an intake mechanism that causes the air hole 20h to perform such an intake operation. As shown in FIGS. 4 and 5, the intake mechanism has an air flow path 92 formed along the CD direction inside the cutter roll 20. The air flow path 92 communicates with each air hole 20h while being positioned inwardly in the rotational radius direction Dr20 of the cutter roll 20 with respect to the position of the air hole 20h. Further, as shown in FIG. One end portion 92 a of the flow path 92 reaches one end surface 22 a in the CD direction of the roll body portion 22 of the cutter roll 20. An intake drum 94 is disposed in the vicinity of the one end face 22a, and the intake drum 94 defines a negative pressure chamber SP94 over a predetermined range across the roll gap G in the rotation direction Dc20 of the cutter roll 20. Have. Therefore, when the air hole 20h passes through the predetermined range, the air flow path 92 is communicated with the negative pressure chamber SP94, and air is sucked out from the air flow path 92, whereby the air hole 20h is inhaled. do.

  7A to 8B are schematic center longitudinal sectional views of modifications of the first embodiment. In the following description, differences from the first embodiment will be mainly described. That is, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Further, in FIGS. 7A to 8B, a cross-sectional line of a part of the configuration is omitted.

  The main difference of the first modification shown in FIGS. 7A and 7B with respect to the first embodiment is the assignment relationship of the pushing member 52 and the gripping portion 62 according to the separation mechanism 50 to the rolls 20 and 30. That is, in 1st Embodiment of FIG. 5, although the cutter roll 20 had the pushing member 52 and the anvil roll 30 had the holding part 62, in the structure of this 1st modification of this FIG. 7A and FIG. 7B, it is. Conversely, the anvil roll 30 has a pushing member 52 and the cutter roll 20 has a gripping portion 62. And in this case, while the recessed part 60 which accommodates the said holding part 62 is provided in the outer peripheral surface 20s of the cutter roll 20 so that the holding part 62 may be located in the substantially plane center part of cutter blade division area | region A21, while pushing member 52 is a part of the outer peripheral surface 30s of the anvil roll 30 that can enter the gap between the gripping arm 63 in the open state and the inner wall surface 60w of the recess 60 when passing through the roll gap G. Protrusively provided.

  Incidentally, even in the first modification, the continuous sheet 1 is wound around the anvil roll 30 that is a roll having the pushing member 52 at a predetermined winding angle. That is, the continuous sheet 1 after passing through the position of the roll gap G is wound around the roll having the push-in member 52 and conveyed toward the next process. Here, as shown in FIG. Since 1 t is held by the holding portion 62, it is held on the cutter roll 20, which is a roll opposite to the roll 30. Therefore, after leaving the roll gap G, the conveyance route of the continuous sheet 1 and the conveyance route of the cut target portion 1t are respectively divided into an anvil roll 30 side route and a cutter roll 20 side route, As a result, the excision target portion 1t is reliably and smoothly separated from the continuous sheet 1. In the first modified example, since the cutter roll 20 has the gripping portion 62 as described above, the suction / recovery mechanism 70 for sucking / recovering the excision target portion 1t is provided facing the cutter roll 20. ing.

  The second modified example in FIG. 8A is different from the first embodiment in the aspect of winding the continuous sheet 1 around the rolls 20 and 30. That is, in 1st Embodiment of FIG. 6A, although the continuous sheet 1 was wound around the cutter roll 20 by predetermined | prescribed winding angle (theta), in this 2nd modification, with respect to which roll of the cutter roll 20 and the anvil roll 30 However, the continuous sheet 1 is not wound, that is, both the rolls 20 and 30 are in contact with the continuous sheet 1 only at the position of the roll gap G, and both the rolls 20 and 30 are continuous sheet 1 except at the position of the roll gap G. This is different from the first embodiment in this point. Other points are substantially the same as those in the first embodiment. For example, even in the second modified example, since the anvil roll 30 has the gripping portion 62, the suction recovery mechanism 70 for sucking and recovering the excision target portion 1t is provided to face the anvil roll 30. Yes.

  Similarly, even in the third modified example of FIG. 8B, the difference from the first embodiment is in the winding mode of the continuous sheet 1. That is, in the third modification, the continuous sheet 1 is so-called S hung on the cutter roll 20 and the anvil roll 30. More specifically, the roll around which the continuous sheet 1 is wound is switched from the cutter roll 20 to the anvil roll 30 with the position of the roll gap G as a boundary, whereby the continuous sheet 1 in a state of passing through the rolls 20 and 30. The side view shape is substantially S-shaped. In the third modified example, the continuous sheet 1 is wound around the roll 20 (corresponding to the first roll) having the grip portion 62 before passing through the roll gap G, and the pushing member 52 is wound. The continuous sheet 1 is wound around the roll 30 (corresponding to the second roll) having a roll gap G after passing through the roll gap G. As a result, as described above in the first modification, the continuous sheet 1 after passing through the position of the roll gap G and the excision target portion 1t follow two different conveyance routes. Separation of the excision target portion 1t from the sheet 1 is performed smoothly. Of course, also in the third modified example, the suction recovery mechanism 70 is provided to face the roll 20 having the gripping portion 62.

=== Second Embodiment ===
9A to 9B are explanatory diagrams of the separation device 10a according to the second embodiment. FIG. 9A is a schematic perspective view of the separating apparatus 10a, and FIG. 9B is a schematic vertical sectional view of the same. In these FIGS. 9A and 9B, cross-sectional lines of a part of the configuration are omitted. 10A to 10E are explanatory diagrams of the operation of the separation device 10a.

In the first embodiment described above, the cutter roll 20 and the anvil roll 30 share the entire configuration of the separation mechanism 50. That is, both the cutter roll 20 and the anvil roll 30 are only cut. There was also a separation process.
In this regard, in this second embodiment, the cutter roll 20 is not provided with any mechanism related to the separation mechanism 50, and is specialized in the cutting process, thereby improving the cutting accuracy. Yes. That is, in this second embodiment, as shown in FIGS. 9A and 9B, instead of providing the cutter roll 20 with the mechanism portion related to the separation mechanism 50, the separation mechanism is connected to the anvil roll 30 as the first roll. In order to configure 50, a separate auxiliary roll 80 is provided as a second roll separately. And this point is mainly different from the first embodiment. Therefore, in the following description, such a difference will be described, and the same components are simply denoted by the same reference numerals, and the description thereof will be omitted.

  As shown in FIGS. 9A and 9B, the die cutter device 10a, which is the separation device 10a of the second embodiment, has three rolls of a cutter roll 20, an anvil roll 30, and a separation auxiliary roll 80. Yes. And these three rolls 20, 30, and 80 are arrange | positioned along with the MD direction from the upstream to the downstream in this order. That is, the anvil roll 30 is interposed between the cutter roll 20 and the separation auxiliary roll 80, whereby the outer peripheral surface 30 s of the anvil roll 30 is the outer peripheral surface 20 s of the cutter roll 20 and the separation auxiliary roll 80, It faces each of 80s.

  Then, as shown in FIG. 9B, the continuous sheet 1 is first sent to the roll gap G20 between the cutter roll 20 and the anvil roll, and when passing through the position of the roll gap G20, the leg periphery opening 1h is opened. Although it is cut and formed, the continuous sheet 1 is wound around the outer peripheral surface 30 s of the anvil roll 30 and conveyed. And when passing the position of the roll gap | interval G80 between the anvil roll 30 and the separation auxiliary roll 80, it leaves | separates from the outer peripheral surface 30s of the anvil roll 30, and is conveyed toward the next process, The excision target portion 1t is separated from the leg opening 1h of the continuous sheet 1 by the separation mechanism 50, and thereafter, the excision target portion 1t is disposed opposite to the outer peripheral surface 80s (corresponding to the outer peripheral portion) of the auxiliary separation roll 80. The sucked and recovered mechanism 70 sucks and collects.

  As shown in FIGS. 9A and 9B, the cutter roll 20 is specialized for the cutting process as described above, and thus has neither the pushing member 52 nor the gripping part 62. As a result, the cutter roll 20 can be rotated with a good rotational balance with little eccentricity, and as a result, the continuous sheet 1 can be cut with high cutting accuracy.

  On the other hand, on the outer peripheral surface 30s of the anvil roll 30 as the first roll, a pushing member 52 is provided instead of the grip portion 62 of the first embodiment. The pushing member 52 is provided at a portion of the outer peripheral surface 30s that should face the substantially plane center portion of the cutter blade partition region A21 of the cutter roll 20 when passing through the position of the roll gap G20 with the cutter roll 20. The anvil roll 30 is provided so as to be able to appear and disappear from the outer peripheral surface 30s.

  Further, the separation auxiliary roll 80 as the second roll has the same gripping portion 62 as the anvil roll 30 of the first embodiment described above accommodated in the concave portion 60 of the outer peripheral surface 80s. Yes. The grip portion 62 is provided at a portion of the outer peripheral surface 80 s that should face the pushing member 52 of the anvil roll 30 when passing the position of the roll gap G80 with the anvil roll 30.

  Here, as shown in FIG. 10B, the pushing member 52 of the anvil roll 30 is retracted inward from the outer peripheral surface 30 s of the anvil roll 30 when passing the position of the roll gap G20 with the cutter roll 20. On the other hand, as shown in FIG. 10D, when passing through the position of the roll gap G80 with the separation assisting roll 80, the pushing member 52 has a protruding state that protrudes outward from the outer peripheral surface 30s. Become.

More specifically, in this example, as shown in FIG. 10A, when the pushing member 52 passes through a position 90 ° upstream from the position of the roll gap G20 with the cutter roll 20 in the rotation direction, the pushing member 52 Starts to be retracted from the outer peripheral surface 30s and is in a submerged state, and the pushing member 52 passes through the position of the roll gap G20 with the cutter roll 20 as shown in FIG. As shown in FIG. 10C, the pushing member 52 passes through a position 45 ° downstream from the roll gap G20, that is, a position 45 ° upstream in the rotational direction Dc30 from the position of the roll gap G80 with the separation auxiliary roll 80. Then, the push-in member 52 starts a push-out operation protruding from the outer peripheral surface 30s and enters a push-out state. Passes through the position of the roll gap G80 between the auxiliary separation roller 80 as shown in FIG. 10D.
Therefore, when the continuous sheet 1 is clamped by the cutter blade 21 of the cutter roll 20 and the outer peripheral surface 30s of the anvil roll 30 to cut the excision target portion 1t (FIG. 10B), based on the submerged state of the pushing member 52. The cutter roll 20 can be cut with high cutting accuracy without any adverse effect on the cutting accuracy. On the other hand, when separating the cut target portion 1t from the leg opening 1h (FIG. 10D). ) Based on the protruding state of the pushing member 52, the excision target portion 1t can be pushed quickly toward the gripping portion 62 of the auxiliary separation roll 80. As a result, according to the configuration of the second embodiment, it is possible to achieve reliable separation of the cut target portion 1t from the continuous sheet 1 while maintaining high cutting accuracy of the cutter roll 20.

  As the drive mechanism 55 (corresponding to the retracting mechanism) for moving the pushing member 52 in and out in this way, the same driving mechanism 55 as the driving mechanism 65 of the gripping arm 63 described above can be used. That is, as shown in FIGS. 9A and 9B, the drive mechanism 55 includes a recess 55h formed on the outer peripheral surface 30s of the anvil roll 30 so as to accommodate the pushing member 52, and the inside of the anvil roll 30 in communication with the recess 55h. (Not shown) formed along the CD direction, a shaft portion 56 inserted through the hole portion along the CD direction to which the pushing member 52 is fixed, and the shaft portion 56 along the CD direction. And a cam mechanism 57 that rotates around the axis C56.

  The shaft portion 56 is rotatably supported around the shaft core C56 by a suitable bearing member (not shown) such as a sliding bearing provided in the hole. And the base end part 52b of the pushing member 52 is being fixed to the axial part 56 so that relative movement is impossible. Therefore, the push-in member 52 moves in and out as the tip 52a of the push-in member 52 swings around the shaft 56 based on the reciprocating rotation of the shaft 56.

  On the other hand, the cam mechanism 57 converts the rotation operation of the anvil roll 30 into a reciprocating rotation operation and transmits it to the shaft portion 56. As a result, the shaft portion 56 reciprocates once for each rotation of the anvil roll 30, and as a result, the push-in member 52 appears and disappears for each resection target portion 1t related to the leg opening 1h. Perform the action. As the cam 57c of the cam mechanism 57, a plate cam 57c can be exemplified as in the case of driving the grip arm 63 described above. In this example, the plate cam 57c is provided only on one side in the CD direction of the roll body portion 32 of the anvil roll 30, but may be provided on both sides if installation space permits.

  The plate cam 57c is erected and fixed to the base of the production line through a stay member (not shown) so as not to move. In correspondence with the plate cam 57c, the one end portion 56e of the shaft portion 56 protrudes from the one end surface 32a of the roll body portion 32 of the anvil roll 30, and a driven arm 58 is provided at the one end portion 56e. Yes. That is, the base end portion 58b of the follower arm 58 is connected to the above-described shaft portion 56 so as not to be relatively rotatable and relatively unmovable, whereby the tip end portion 58a that is the swing end swings around the shaft portion 56 as a fulcrum. Further, a cam follower 59 as a contact is rotatably supported at the tip 58a, and the cam follower 59 abuts on the outer peripheral surface of the plate cam 57c which is the cam surface 57ca and rolls on the outer peripheral surface 57ca. Is possible.

  Therefore, when the anvil roll 30 rotates, the driven arm 58 circulates around the plate cam 57c while bringing the cam follower 59 as a contact into contact with the outer peripheral surface 57ca of the plate cam 57c. The tip 58a of the driven arm 58 is moved in the rotational radius direction Dr30 of the anvil roll 30 via the cam follower 59 in accordance with the rotational position of the driven arm 58, and the shaft portion is moved based on the swinging motion of the driven arm 58 thereby. 56 reciprocates. And if the axial part 56 reciprocates, the pushing member 52 will also rock | fluctuate, Based on the component of the rotation radial direction Dr30 of this rocking | fluctuation operation | movement, the pushing member 52 will be infested.

  Here, preferably, a plurality of air holes (not shown) are formed in the outer peripheral surface 30s so that the continuous sheet 1 and the cut target portion 1t are adsorbed on the outer peripheral surface 30s of the anvil roll 30. Then, at least the suction operation by the air holes is such that the anvil roll 30 is separated from the position G20 where the anvil roll 30 receives the continuous sheet 1 from the cutter roll 20 (that is, the position of the roll gap G20 with the cutter roll 20). It may be configured to be performed over a range up to a position G80 where the continuous sheet 1 is delivered to 80 (that is, a position of the roll gap G80 with the separation auxiliary roll 80) (FIG. 9B). And if it becomes like this, the to-be-removed part 1t which fits in the leg periphery opening part 1h of the continuous sheet 1 will be substantially integral with the continuous sheet 1 in MD direction, without dropping from the leg periphery opening part 1h. Conveyed along.

  An example of the intake mechanism that causes the air hole to perform such an intake operation is the intake mechanism described in the first embodiment. That is, the intake mechanism has an air flow path (not shown) formed in the anvil roll 30 along the CD direction. The air flow path is in communication with the air hole while being positioned inward in the rotational radius direction Dr30 of the anvil roll 30 with respect to the air hole, and the air flow path is connected to the roll body portion of the anvil roll 30. 32 reaches one end face 32 b of the base plate 32. Further, an intake drum 94a (FIG. 9A) is disposed in the vicinity of the one end face 32b. The intake drum 94a is at least in a range from the roll gap G20 to the roll gap G80 in the rotation direction Dc30 of the anvil roll 30. A negative pressure chamber SP94a is provided. Therefore, when the air hole passes through this range, the air flow path communicates with the negative pressure chamber SP94a, and air is sucked out of the air flow path, whereby the air hole performs an intake operation.

  Desirably, as shown in FIG. 9A, an endless groove 80m along the circumferential direction is formed on the outer circumferential surface 80s of the auxiliary separation roll 80 over the entire circumference. In the illustrated example, two endless grooves 80m and 80m are formed side by side at substantially the center in the CD direction. Then, as shown in FIG. 9B, the endless grooves 80m and 80m are inserted with claw portions 72 provided integrally with the opening 70a serving as a suction port of the suction recovery mechanism 70. As a result, when the excision target portion 1t gripped by the gripping portion 62 of the separation assist roll 80 passes the position of the suction recovery mechanism 70, the excision target portion 1t released to the gripping portion 62 is separated for some reason. Even in the case where the roll 80 is not separated from the outer peripheral surface 80s, when the excision target portion 1t passes integrally with the outer peripheral surface 80s through the position of the suction recovery mechanism 70, the nail portion 72 receives the excision target portion 1t. Is urged to urge the part 1t to be removed from the outer peripheral surface 80s. Therefore, the collection accuracy of the excision target portion 1t can be increased. Incidentally, in the above description, the endless grooves 80m and 80m are formed at substantially the center in the CD direction. Actually, however, the endless grooves 80m and 80m may be formed at any position as long as the excision target portion 1t passes in the CD direction. good.

  If the claw portion 72 and the gripping arm 63 are likely to interfere with each other, as shown in FIG. 9A, the rotation direction Dc80 of the separation assisting roll 80 at a position corresponding to the claw portion 72 in the gripping arm 63. The groove portions 63m and 63m may be formed so as to be used as the passages of the claw portions 72 and 72. Incidentally, instead of forming the grooves 63m and 63m, the gripping arm 63 may be divided into three pieces, and the interval between the three pieces may be used as the groove.

  FIG. 11 is a schematic center longitudinal sectional view of a modification of the second embodiment. In the following description, differences from the second embodiment will be mainly described. That is, the same components as those in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted. Further, in FIG. 11, a cross-sectional line of a part of the configuration is omitted.

The main difference of the modified example of FIG. 11 from the second embodiment is the assignment relationship of the push-in member 52 and the gripping portion 62 according to the separation mechanism 50 to the rolls 30 and 80.
That is, in the second embodiment of FIG. 9B, the anvil roll 30 has the pushing member 52 and the separation assist roll 80 has the gripping portion 62. However, in the modification of FIG. Has a gripping portion 62, and the auxiliary separation roll 80 has a pushing member 52.

  In this case, the installation position of the grip portion 62 of the anvil roll 30 is set to a portion that faces the substantially flat central portion of the cutter blade partition region A21 when passing through the roll gap G20 with the cutter roll 20. On the other hand, the pushing member 52 of the separation auxiliary roll 80 is pushed into the gap between the grip arm 63 in the open state and the inner wall surface 60w of the recess 60 when passing through the position of the roll gap G80 with the anvil roll 30. In order to allow the member 52 to enter, the member 52 is provided so as to protrude from the outer peripheral surface 80 s at a portion of the outer peripheral surface 80 s of the auxiliary separation roll 80 facing the gap.

  By the way, about the pushing member 52 of this modification, it is fixed to the outer peripheral surface 80s of the auxiliary separation roll 80 so that it cannot move, that is, it is not configured to protrude from the outer peripheral surface 80s. This is because, in the case of this modification, the pushing member 52 is not provided on the anvil roll 30 and does not face the cutter blade 21 of the cutter roll 20, so that the pushing member 52 protrudes from the outer peripheral surface 80 s. This is because the cutting accuracy of the cutter roll 20 is not affected at all.

  In this respect, the anvil roll 30 that may affect the cutting accuracy of the cutter roll 20 is provided with a gripping portion 62, which is formed on the outer peripheral surface 30 s of the anvil roll 30. The recessed portion 60 is accommodated. Therefore, the gripping part 62 does not protrude outward from the outer peripheral surface 30s. Therefore, when the excision target portion 1t is cut from the continuous sheet 1, the excision target portion 1t is not protruded in the rotational radius direction Dr30 of the anvil roll 30, and in this modification example, The cutter roll 20 can perform the cutting with high cutting accuracy while omitting the drive mechanism 55 of the push-in member 52 that is necessary in the second embodiment.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, The deformation | transformation as shown below is possible.

  In the above-described embodiment, the cutter blade 21 is an endless blade that is substantially annularly continuous over the entire circumference of the excision target portion 1t. However, the present invention is not limited to this. In other words, the cutter blade is not limited to the endless blade described above as long as it can cut the cutting target portion 1t from the continuous sheet 1 so as to be cut. For example, a U-shaped blade or a V-shaped blade in a plan view may be used in order to form a notch at one end of both end edges in the width direction of the continuous sheet 1. In this case, both the end portions of the cutter blade 21, that is, the portions without the blade are positioned outward in the width direction from the edge of the continuous sheet 1, and the cutting target portion 1 t is cut from the continuous sheet 1. become.

  In the above-described embodiment, the cutter roll 20 has the bearer portion 25, but the bearer portion 25 is not an essential configuration. That is, the bearer unit 25 may be omitted. Moreover, you may provide a bearer part in the anvil roll 30. FIG.

  In the above-described embodiment, as an example of the absorbent article, a disposable diaper that is attached to a wearing target and absorbs the excretory fluid thereof is exemplified, but any of those that absorb excretory fluid such as urine and menstrual blood can be used. For example, a sanitary napkin or a pet sheet that absorbs the excretory fluid of the pet may be used.

  In the first embodiment described above, the push-in member 52 is fixed so as not to be able to appear and retract. However, by providing the drive mechanism 55 as in the second embodiment, a structure capable of appearing and retracting may be used.

  In the above-described embodiment, the plate cams are exemplified as the cams 67c and 57c of the cam mechanisms 67 and 57 that drive the grip arm 63 and the push-in member 52. You may apply the cam.

  In the above-described embodiment, the gripping arm 62 and the inner wall surface 60w of the recess 60 that are paired with each other are illustrated as the gripping portion 62, but the present invention is not limited to this. For example, a pair of gripping arms may be provided so as to be freely opened and closed, and the excision target portion 1t may be sandwiched and gripped by the pair of gripping arms.

  In the above-described embodiment, an example of a so-called single-cut configuration in which one resection target portion 1t is cut and one leg opening 1h is formed per rotation of the cutter roll 20 and the anvil roll 30, It is not limited to this, but it may be two or more. That is, two or more pieces to be cut 1t, 1t,... Per one rotation of the cutter roll 20 and the anvil roll 30 are cut to form two or more pieces of leg-periphery openings 1h, 1h,. It may be formed. In this case, it is needless to say that the configuration to be provided for each part to be cut 1t such as the cutter blade 21, the pushing member 52, and the gripping part 62 is increased by that amount.

  In the description of the above-described embodiment, the material of the gripping arm 63 has not been described, but a metal such as steel, resin, or the like is used as the material.

1 continuous sheet, 1h leg opening, 1t part to be excised,
1td downstream part, 1tu upstream part,
10 Die cutter device (separator),
10a Die cutter device (separator),
12 bearing members, 13 bearing members,
15 housing member, 15a frame, 17 hydraulic cylinder,
20 cutter roll (first roll), 20h air hole,
20s outer peripheral surface (outer peripheral part), 21 cutter blade,
22 roll body part, 22a end face, 23 small diameter part, 25 bearer part,
30 anvil roll (2nd roll, 1st roll), 30s outer peripheral surface (outer peripheral part),
32 roll body, 32a end face, 32b end face, 33 small diameter part,
40 drive mechanism, 41 shaft coupling, 43 drive transmission gear,
50 separation mechanism, 52 pushing member, 52a distal end, 52b proximal end,
55 Drive mechanism (in / out mechanism), 55h recess, 56 shaft, 56e end,
57 cam mechanism, 57c plate cam (cam), 57ca outer peripheral surface (cam surface),
58 driven arm, 58a distal end, 58b proximal end, 59 cam follower,
60 concave portion, 60w inner wall surface, 62 gripping portion, 63 gripping arm,
63a distal end, 63ah bowl-shaped head, 63b proximal end,
63m groove part, 65 drive mechanism, 66 shaft part, 66e end part,
67 cam mechanism, 67c plate cam (cam, disc member),
67ca outer peripheral surface (cam surface), 67cs disc surface, 67s stay member,
68 driven arm, 68a distal end, 68b proximal end, 69 cam follower,
70 suction recovery mechanism (recovery mechanism), 70a opening, 70d duct,
72 nails, 80 separation auxiliary roll (second roll),
80m endless groove, 80s outer peripheral surface (outer peripheral part),
92 air flow path, 92a end, 94 intake drum, 94a intake drum,
A21 cutter blade partition area (closed area), A21d downstream area,
C20 rotation axis, C30 rotation axis, C56 axis, C66 axis,
G20 roll gap, G80 roll gap,
P20 reference position, P30 reference position, S63 clearance,
SP94 negative pressure chamber, SP94a negative pressure chamber

Claims (10)

It has a 1st roll and a 2nd roll which rotate along the conveyance direction of a continuous sheet, making each other perimeter part oppose, and a roll gap between the 1st roll and the 2nd roll is said continuous sheet Is a device that separates the excision target portion in the continuous sheet from the continuous sheet when passing,
The first roll has a pushing member that pushes the portion to be cut in the continuous sheet into the recess of the outer peripheral portion of the second roll,
The second roll has a gripping part for gripping the part to be excised pushed into the concave part in the concave part ,
The grip portion is fixed to a shaft portion, and can swing based on a reciprocating rotation operation of the shaft portion with the shaft portion serving as a fulcrum.
The shaft is reciprocally rotated around the axis by a cam mechanism,
The separation mechanism of the continuous sheet excision target portion , wherein the cam mechanism converts the rotational motion of the second roll into the reciprocating rotational motion and transmits the converted motion to the shaft portion . A separation device for a portion to be cut of a continuous sheet according to claim 1,
When the pushing member protruding from the outer peripheral portion of the first roll and the recessed portion of the second roll pass through the position of the roll gap, the pushing member enters the recessed portion, thereby Push the target part into the recess,
The continuous sheet excision target part separating apparatus, wherein the excision target part pushed into the concave part is gripped by the gripping part in the concave part. A separation device for a part to be cut of the continuous sheet according to claim 1 or 2,
The first roll is a cutter roll having a cutter blade on the outer periphery,
The second roll is an anvil roll that receives the cutter blade at the outer periphery,
The cutter blade divides a closed region having a contour shape corresponding to the excision target portion into an outer peripheral portion of the first roll, and the pushing member is provided in the closed region,
In the roll gap, the first roll and the second roll rotate so that the pushing member and the concave portion face each other. A separation device for a part to be cut of the continuous sheet according to claim 1 or 2,
The outer periphery of the first roll has a cutter roll that rotates along the transport direction while facing the outer periphery,
The outer peripheral portion of the cutter roll has a cutter blade that divides a closed region of a contour shape corresponding to the cutting target portion into the outer peripheral portion,
In the roll gap between the first roll and the cutter roll, the cutting target part in the continuous sheet is sandwiched between the cutter blade and the outer peripheral part of the first roll, so that the cutting target part is removed from the continuous sheet. Cut and
In the roll gap, the cutter roll and the first roll rotate such that the closed region of the cutter blade and the push-in member face each other. . It is a separation device of the excision object part of the continuous sheet according to claim 4,
An intrusion mechanism for intruding the pushing member from the outer periphery of the first roll to the outside of the first roll;
The pushing member passes through the position of the roll gap with the cutter roll in a submerged state retracted into the outer periphery of the first roll,
The separation device for a cut-out portion of a continuous sheet, wherein the pushing member protrudes from the outer peripheral portion of the first roll and passes through a position of a roll gap with the second roll. A separation device for a portion to be cut of a continuous sheet according to any one of claims 1 to 5,
The continuous sheet after passing through a roll gap between the first roll and the second roll is wound around the outer periphery of the first roll at a predetermined winding angle and conveyed. Separation device for the excision object. A separation device for a portion to be cut of a continuous sheet according to any one of claims 1 to 6,
The pushing member is a plate member arranged along the thickness direction in the rotation direction of the first roll,
The grasping portion sandwiches and grasps the resection target portion together with the push member by sandwiching the resection target portion pushed into the push member in the plate thickness direction. Separation equipment. A separation device for a portion to be cut of a continuous sheet according to any one of claims 1 to 7,
At a position downstream of the position of the roll gap with the first roll in the rotation direction of the second roll, a recovery mechanism that recovers the excision target portion is disposed opposite the outer peripheral portion of the second roll. Has been
The continuous sheet excision target part separating apparatus, wherein the gripping part releases the excision target part when the gripping part passes through the position of the recovery mechanism by the rotation of the second roll. A separation device for a portion to be cut of a continuous sheet according to any one of claims 1 to 8,
An air hole that adsorbs the excision target portion to the peripheral portion is provided in the peripheral portion of the pushing member in the outer peripheral portion of the first roll,
The apparatus for separating a cut portion of a continuous sheet, wherein the air hole performs an intake operation when the intake hole passes through the roll gap. Using a first roll and a second roll that rotate along the conveying direction of the continuous sheet while facing the outer peripheral portions of each other, the roll gap between the first roll and the second roll is set to the continuous sheet. Is a method of separating the excision target part in the continuous sheet from the continuous sheet when passing,
Pressing the excision target portion of the continuous sheet into the recess of the outer peripheral portion of the second roll by the pressing member of the first roll;
Gripping the portion to be excised pushed into the recess by a grip portion in the recess of the second roll , and
The grip portion is fixed to a shaft portion, and can swing based on a reciprocating rotation operation of the shaft portion with the shaft portion serving as a fulcrum.
The shaft is reciprocally rotated around the axis by a cam mechanism,
The method of separating the cut target portion of the continuous sheet , wherein the cam mechanism converts the rotational motion of the second roll into the reciprocating rotational motion and transmits it to the shaft portion .

Images