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WO2017208845A1 - Method and device for folding long double-sided cardboard - Google Patents

Method and device for folding long double-sided cardboard Download PDF

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Publication number
WO2017208845A1
WO2017208845A1 PCT/JP2017/018705 JP2017018705W WO2017208845A1 WO 2017208845 A1 WO2017208845 A1 WO 2017208845A1 JP 2017018705 W JP2017018705 W JP 2017018705W WO 2017208845 A1 WO2017208845 A1 WO 2017208845A1
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WO
WIPO (PCT)
Prior art keywords
sided cardboard
double
cardboard
crease
long double
Prior art date
Application number
PCT/JP2017/018705
Other languages
French (fr)
Japanese (ja)
Inventor
田中　一平
一彦 大崎
弘昭 藤居
Original Assignee
株式会社ＴａｎａーＸ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ＴａｎａーＸ filed Critical 株式会社ＴａｎａーＸ
Priority to JP2018520793A priority Critical patent/JP6670932B2/en
Publication of WO2017208845A1 publication Critical patent/WO2017208845A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/06—Folding webs
    • B65H45/10—Folding webs transversely
    • B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
    • B65H45/1015—Folding webs provided with predefined fold lines; Refolding prefolded webs, e.g. fanfolded continuous forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/08—Creasing

Definitions

  • the present invention relates to a method and an apparatus for folding a long double-sided cardboard, which is a raw material for manufacturing a large number of cardboard boxes and the like, into a bellows shape.
  • Patent Document 1 an apparatus has been proposed for cutting out cardboard sheets of various sizes and shapes for cardboard boxes that are drawn out from a long cardboard material by the required length when necessary (corresponding to individual packages)
  • Double-sided cardboard is usually used as the material for cardboard boxes.
  • double-sided cardboard is usually used as a material for manufacturing on-demand cardboard boxes because it is difficult to wind in a roll. What was folded in the shape is used (nonpatent literature 1).
  • Patent Document 2 There is an apparatus described in Patent Document 2 as an apparatus that folds long double-sided cardboards that are continuously manufactured into a bellows shape in the final process in a double-sided cardboard manufacturing process.
  • this folding device the arm placed in a cross is rotated, and a long double-sided cardboard that is continuously supplied is bent and folded at a predetermined interval by a rod that protrudes vertically from the tip of the arm. Are stacked in a bellows shape.
  • Patent Document 2 requires a complicated and large-scale mechanism, and also requires a space for the arm to rotate.
  • the problem to be solved by the present invention is to provide a method and apparatus for folding a continuously produced long double-sided cardboard in a bellows shape with a simple and compact mechanism.
  • a method for folding a long double-sided cardboard is as follows. a) applying a crease at a predetermined interval L to a long double-sided cardboard conveyed in a direction perpendicular to the wave; b) sending the long double-sided corrugated cardboard with the creases to a second carrier having a smaller inclination angle from a first carrier having a predetermined climb angle; c) The cradle for placing the folded long double-sided cardboard is placed so that the uppermost surface of the folded long-sided cardboard is at a distance of 0.8 to 1.2 times the distance L from the second transport table. And a step of lowering while adjusting to.
  • a crease is given at a predetermined interval L to a long double-sided cardboard conveyed in a direction perpendicular to the wave.
  • This crease may be provided over the entire width of the long double-sided cardboard or may be provided only in part.
  • you may provide intermittently. When partially or intermittently provided, it is desirable to provide creases at both ends.
  • the crease may be composed of a single crease, but is composed of two adjacent creases (with an interval of 1 to 3 times the thickness of the long double-sided cardboard). It is desirable that Details are described in Japanese Patent Application No. 2016-033249.
  • the long double-sided corrugated cardboard with such a crease is sent from the first transport table having a predetermined climb angle to the second transport table having a smaller tilt angle.
  • the inclination angle of the first carrier is preferably in the range of 20 to 45 °.
  • the inclination angle of the second transport table may be an ascending inclination angle, a horizontal inclination angle, or a slightly downward inclination angle.
  • the inclination angle of the second carrier is preferably in the range of 0-30 °.
  • the long double-sided corrugated cardboard is It bends slightly at the crease and has a signature.
  • the long double-sided cardboard with creases at the crease falls freely from the second transport table to the cradle, it is greatly bent at the creases.
  • the height of the cradle is adjusted so that the uppermost surface of the folded long double-sided cardboard is always lower than the second carrier by a distance of 0.8L to 1.2L.
  • the long double-sided cardboard is bent in the reverse direction at the next crease due to the weight of the long double-sided cardboard between the next crease and the next The crease is on the near side.
  • the long double-sided cardboard is folded in a bellows shape on the cradle.
  • An apparatus for folding a long double-sided cardboard for carrying out the method according to the present invention, a) a transport unit for feeding a long double-sided cardboard in a direction perpendicular to the wave; b) a crease imparting section for imparting creases to the long double-sided cardboard at a predetermined interval L; c) a first transport stand provided downstream of the crease-applying section and having a predetermined climbing inclination angle; d) a second transport table provided downstream of the first transport table and having an inclination angle smaller than that of the first transport table; e) a cradle for placing a folded long double-sided cardboard; f) A cradle lifting / lowering unit that lowers the cradle while adjusting the uppermost surface of the placed long double-sided cardboard so that the uppermost surface of the long corrugated cardboard is lower than the distance L by 0.8 to 1.2 times the distance L It is characterized by including these.
  • the cradle lifting / lowering section can determine the descending speed of the cradle by calculation based on the feeding speed of the long double-sided cardboard, the interval L between the creases, and the thickness of the long double-sided cardboard. Or you may provide the sensor which detects the position of the uppermost surface of the mounted long double-sided cardboard.
  • the long double-sided corrugated cardboard sent out from the second carrier is the “next crease” (hereinafter referred to as the second crease) and the next crease (the third crease).
  • the part between the two is called a crease and hits the elastic body when it falls to the cradle due to gravity, and is pushed back so that the back is pushed by the reaction.
  • the long double-sided cardboard is easily bent in the reverse direction at the second crease.
  • the process proceeds to the case of (1) above, the long double-sided cardboard fed from the second transport board advances straight, and the third crease is behind the cradle. Head towards the side. In this case, the third crease is folded and folded as it is in the bent direction between the first conveyance table and the second conveyance table.
  • the elastic body a coil spring can be used, but it is desirable that the elastic body is an arc-shaped plate spring provided so as to protrude rearward and downward from the rear end of the second transport table. Thereby, when flipping back the long double-sided cardboard that has fallen, the surface of the long double-sided cardboard is not wrinkled.
  • a crease is formed in advance on a long-sided double-sided cardboard that is continuously conveyed, and a crease is attached to the fold.
  • the double-sided cardboard is allowed to fall freely from the second carrier to the cradle.
  • the free fall distance By setting the free fall distance to an appropriate value, the long double-sided cardboard can be automatically folded into bellows by its own weight.
  • the automatic folding action due to its own weight when the long double-sided cardboard is freely dropped becomes more reliable.
  • a long double-sided cardboard that is continuously conveyed can be folded into a bellows shape with a simple and compact mechanism.
  • the conceptual diagram for demonstrating the folding method of the long double-sided cardboard which concerns on this invention The schematic block diagram of the manufacturing process of a long double-sided cardboard using the folding apparatus which concerns on this invention.
  • the side view (a) which shows schematic structure of the crease provision part of the folding apparatus which concerns on one Embodiment of this invention, and a front view (b).
  • An example in which the tip of the protrusion is round.
  • the figure which shows the double-sided cardboard in which the crease was provided by the crease provision part which concerns on the embodiment.
  • the side view which shows the schematic whole structure of the folding part which concerns on the same embodiment.
  • the top view which shows the schematic whole structure of a folding part.
  • the side view which expands and shows the bending assistance mechanism and receiving part vicinity of a folding part.
  • Explanatory drawing which shows a mode that the double-sided cardboard which provided the crease was folded.
  • the base papers 61, 62, and 63 are drawn out from the roll 12 of the front liner paper 61, the roll 14 of the medium liner paper 62, and the roll 16 of the back liner paper 63, respectively.
  • the corrugator 21 in the single facer 20 forms the intermediate paper 62.
  • Corrugated steps are formed and bonded to the front liner paper 61 to produce a single-sided cardboard 17.
  • the back liner paper 63 is bonded to the corrugated side of the single-sided cardboard 17 to produce a long double-sided cardboard 60 (hereinafter referred to as double-sided cardboard 60).
  • the double-sided cardboard 60 is composed of a front liner paper 61, an intermediate paper 62, and a back liner paper 63.
  • Each base paper is heated by the heaters 22, 31, and 32 before being bonded with the adhesive, and the manufactured double-sided cardboard 60 is also heated by the heater 33 to cure (fix) the adhesion.
  • the manufactured double-sided cardboard 60 is conveyed in a direction perpendicular to the wave pattern by a conveyance device (not shown), and is alternately folded and folded into a bellows shape by moving to the folding device 70 according to the present invention.
  • the folding device 70 includes a crease imparting unit 100 that forms creases from both sides with respect to the double-sided cardboard 60 every predetermined length, and a fold-up unit that folds the double-sided cardboard 60 after the creases are given in a bellows shape. 200.
  • a crease imparting unit 100 that forms creases from both sides with respect to the double-sided cardboard 60 every predetermined length
  • a fold-up unit that folds the double-sided cardboard 60 after the creases are given in a bellows shape. 200.
  • the crease imparting unit 100 includes a first ruled roller 141 and a second ruled roller 142 arranged side by side in the vertical direction, a first drive unit 121 and a second drive unit 122 that rotationally drive them, and these drive units. It consists of the control part 130 which controls. 3 (a) and 3 (b), the double-sided cardboard 60 is in a substantially horizontal state from the left side to the right side of the paper so that the front (front) surface is facing up and the back surface is facing down. Are continuously supplied to the crease provision unit 100.
  • the first ruler roller 141 and the second ruler roller 142 are each extended in the width direction of the double-sided cardboard 60 and have a wider width than the double-sided cardboard 60. Further, an upper pressing member 111 and a lower pressing member 112 extending in the axial direction of the ruler roller are provided on the surfaces of the ruler rollers 141 and 142, respectively.
  • Each of the upper pressing member 111 and the lower pressing member 112 is composed of a rod-shaped member having a substantially rectangular cross section having the same length as the axial length of the ruled roller, and a part thereof is formed on the surface of the ruled roller. It is attached to the surface of the ruled roller by fitting in the groove.
  • FIG. 4 shows the structure of the tip portions of the upper pressing member 111 and the lower pressing member 112.
  • a groove 111b extending in the axial direction of the first ruler roller 141 is formed on a tip surface of a portion of the upper presser member 111 protruding from the first ruler roller 141.
  • the front end surface has two protrusions 111a1 (upstream in the flow direction of the double-faced cardboard 60) and protrusions 111a2 (same and downstream).
  • the two ridges 111a1 and 111a2 are parallel to each other, and each has a width W1 (the length of the double-sided cardboard 60 in the flow direction) that is about 0.5 to 3 times the thickness of the double-sided cardboard 60.
  • protrusions 111a1 and 111a2 are provided with a gap W2 that is 1 to 3 times the thickness of the double-sided cardboard 60.
  • the protrusions 111a1 and 111a2 have chamfered corners on both sides in the flow direction of the double-faced cardboard 60 among the end faces, and are inclined with respect to the double-faced cardboard 60 (see FIG. Of the surface, 111c1 is attached to the upstream side of the protrusion 111a1, 111d1 is attached to the downstream, 111c2 is attached to the upstream of the protrusion 111a2, and 111d2 is attached to the downstream.
  • the chamfered portion may be a curved surface (R surface) or a flat surface (see FIG. 5 (a)).
  • the both sides of the ridge portion may be inclined flat (surface 111f), and the surface 111g sandwiched between these inclined surfaces may be curved (FIG. 5 (c)).
  • the structure of the lower pressing member 112 is the same as that of the upper pressing member 111, and has two protrusions 112a1 (upstream side) and 112a2 (downstream side) on the tip surface thereof.
  • the positions of the first ruler roller 141 and the second ruler roller 142 are such that when the upper pressing member 111 and the lower pressing member 112 approach each other, the ridge 111a1 on the upstream side of the upper pressing member 111 is located on the lower pressing member.
  • the center of rotation is arranged so as to be shifted in the flow direction of the double-sided cardboard 60 so as to fit into the groove 112 b provided in 112.
  • the upstream inclined surface 111c1 of the upstream protruding portion 111a1 of the upper pressing member 111 and the downstream inclined surface 112d1 of the upstream protruding portion 112a1 of the lower pressing member 112 are opposed to each other.
  • the upstream inclined surface 111c2 included in the downstream protruding portion 111a2 of the pressing member 111 and the downstream inclined surface 112d2 included in the downstream protruding portion 112a2 of the lower pressing member 112 face each other.
  • Each of the first drive unit 121 and the second drive unit 122 includes a drive mechanism such as a motor and a gear, and transmits the rotational driving force of the motor to the first ruler roller 141 and the second ruler roller 142 via the drive mechanism.
  • the control unit 130 controls the rotational speed of the first ruled roller 141 and the second ruled roller 142 by sending a control command to the first drive unit 121 and the second drive unit 122, and presses the upper side of both ruled rollers.
  • the member 111 and the lower pressing member 112 are opposed to each other at regular intervals. *
  • creases are applied to the double-sided cardboard 60 as follows. First, the first drive unit 121 and the second drive unit 122 rotationally drive the first ruled roller 141 and the second ruled roller 142 in accordance with a control command sent from the control unit 130.
  • the crease providing unit 100 has the crease provided in the entire width of the double-sided cardboard 60, it may be provided only in a part. In addition, creases may be provided intermittently at both ends and the center of the double-sided cardboard 60. Further, in the present embodiment, the crease is composed of two creases, but the crease may be composed of one crease.
  • the double-sided cardboard 60 to which the creases are applied as described above is sent to the folding unit 200 via the relay conveyance unit 180 as shown in FIGS.
  • the relay conveyance unit 180 includes a belt conveyor having a length of about 15 cm and having two conveyance belts 183 stretched between the start roller 181 and the end roller 182.
  • the end roller 182 can move up and down between a height position (upward position) substantially the same as the entrance of the folding unit 200 and a lower position (downward position).
  • the terminal roller 182 is in the raised position, and the double-sided cardboard 60 conveyed from the crease applying unit 100 is sent to the folding unit 200.
  • the end roller 182 is in the lowered position (a state indicated by a broken line in FIG. 8)
  • an opening is formed between the crease applying unit 100 and the folding unit 200. Therefore, for example, when a defect such as a scratch or tear is found in the double-sided cardboard 60, the double-sided cardboard 60 can be taken out through this opening.
  • the folding unit 200 includes a first transport table 210 and a second transport table 220 that transport the double-sided cardboard 60 sent from the crease imparting unit 100 through the relay transport unit 180 to a high position, and the second transport table 220.
  • a receiving portion 230 that receives the double-sided cardboard 60 that naturally falls from the end, and a folding assist mechanism 260 that assists the double-sided cardboard 60 to bend along a crease when the double-sided cardboard 60 naturally falls from the second transport table 220 are provided. ing.
  • the first transport table 210 includes a pair of frames 211 disposed so as to be inclined at an inclination angle of about 30 ° from the height position when the terminal roller 182 of the relay transport unit 180 is in the raised position. It comprises a start roller 212 and a terminal roller 213 that are rotatably supported between frames 211, and four driven rollers 215.
  • the second transfer table 220 has a pair of frames 221 inclined at an inclination angle of about 5 ° and connected to the end of the frame 211 of the first transfer table 210, and the end of the frame 221.
  • a rotating roller 222 that is rotatably supported between the two and a motor 222a that rotationally drives the rotating roller 222.
  • Two conveying belts 225 are stretched between the starting roller 212 of the first conveying table 210 and the rotating roller 222 of the second conveying table 220.
  • the conveyance belt 225 passes through the end roller 213 of the first conveyance table 210 on the way, and the climbing inclination angle is changed there.
  • the end portion and end roller 213 of the frame 211 of the first transport table 210 and the frame 221 and the rotation roller 222 of the second transport table 220 are all fixed to the upper part of the support table 250 via the support frame 251.
  • the support base 250 includes four support columns 252 and a plurality of connection frames 253 that connect the support columns 252.
  • the receiving part 230 is configured by a substantially rectangular parallelepiped-shaped accommodation space surrounded by the support column 252 of the support base 250, and a rectangular plate-shaped receiving base 240 is disposed in the accommodation space.
  • the cradle 240 is moved up and down in the cradle 230 by the elevating mechanism 232.
  • the elevating mechanism 232 includes, for example, four fixed pulleys 233 that are respectively arranged on the upstream side and the downstream side in the transport direction of the upper part in the receiving unit 230, the wires 234 that are hung on the constant pulley 233, and the wires It is comprised from the winding motor 235 etc. which wind up the one end side of 234.
  • the other ends of the wires 234 are fixed to the four corners of the cradle 240, respectively.
  • the cradle 240 is arranged so that the distance from the upper surface thereof to the end of the second carrier 220 is 0.8 to 1.2 times the distance L between the creases provided to the double-faced cardboard 60. Yes. Thereafter, every time the double-sided cardboard 60 is folded and placed on the receiving table 240, the distance from the top surface of the double-sided cardboard 60 to the end of the second transport table 220 is 0.8 to 1.2 times the crease interval L.
  • the elevating mechanism 232 lowers the cradle 240 so that the distance becomes.
  • the descending speed of the cradle 240 of the elevating mechanism 232 is controlled by the control device 300 (see FIG. 8).
  • the control device 300 controls the control unit 130 of the crease imparting unit 100 and the conveyance of the double-sided cardboard 60 by the first conveyance table 210 and the second conveyance table 220 in addition to the lowering of the cradle 240.
  • the folding assist mechanism 260 includes four first aluminum frames 261 arranged in the conveyance direction downstream of the second conveyance table 220, and a first arrangement arranged downstream of each first aluminum frame 261 (upstream of the receiving portion 230). It consists of two aluminum frames 262 and ribbon steel 263 as an elastic body that is curved upward and has both ends fixed to a pair of four aluminum frames 261 and 262.
  • the ribbon steel 263 is, for example, a stainless steel leaf spring having a length of 400 to 700 mm, a width of 50 mm, and a thickness of 1 mm.
  • the radius of curvature R is about Both ends thereof are fixed to the aluminum frame pairs 261 and 262 so as to be 500 to 900 mm.
  • the first aluminum frame 261 is attached to a frame 264 positioned below the second transfer table 220 so as to be freely tiltable.
  • the frame 264 is fixed to the connection frame 252 of the support base 250.
  • the second aluminum frame 262 is attached to the connecting frame 252 of the support base 250 so as to be tiltable.
  • the double-sided cardboard 60 to which the creases are given is folded as follows. First, the double-sided cardboard 60 is conveyed obliquely upward by the first conveyance table 210 and then sent to the second conveyance table 220. At this time, since the inclination angle of the second conveyance table 220 is smaller than the inclination angle of the first conveyance table 210, the double-sided cardboard 60 is slightly bent at the boundary between the first conveyance table 210 and the second conveyance table 220, There is a compromise.
  • the double-sided cardboard 60 sent to the second transport table 220 freely falls into the receiving portion 230 from the end of the transport table 220 through the ribbon steel 263.
  • the double-sided cardboard 60 with a fold is bent greatly at the fold.
  • the uppermost surface of the folded double-sided cardboard 60 placed on the cradle 240 is always 0.8L to 1.2L from the end of the second transport table 220 (L is the crease formed on the double-sided cardboard 60) Since the height of the cradle 240 is adjusted to be downward by a distance of (1) If the previous crease is on the near side, the next crease goes to the back (state of Fig.
  • the process proceeds to the case (1), and the double-faced cardboard 60 sent out from the second conveyance table 220 advances straight, and the third crease becomes the cradle 240 Head towards the back of the.
  • the third crease is folded as it is between the first conveyance table 210 and the second conveyance table 220, and the double-sided cardboard 60 is folded there.
  • the double-sided cardboard 60 is stacked in a bellows shape on the cradle 240.
  • the crease is composed of two adjacent creases, and is folded in the same way on both the front side and the back side of the double-sided cardboard 60. Cheap.
  • ribbon steel (leaf spring) is used as the elastic body, but a coil spring can be used instead.
  • an inclined plate can be arranged between the terminal end of the second transfer table and the receiving table, and a plurality of coil springs can be fixed on the inclined plate.
  • the inclination angle of the first carrier is 30 °, but it may be in the range of 20 to 45 °.
  • the inclination angle of the 2nd conveyance stand should just be smaller than the inclination angle of a 1st conveyance stand, the inclination angle of an uphill may be sufficient, may be horizontal, and may be a slightly downward inclination angle.
  • the inclination angle of the second carrier is preferably in the range of 0 to 30 °.
  • the descending speed of the cradle 240 is determined by calculation.
  • a sensor for detecting the position of the uppermost surface of the double-sided cardboard placed on the cradle 240 is provided, and the lifting mechanism is based on the detection result of this sensor.
  • the cradle 240 may be lowered.
  • the double-sided corrugated cardboard of the above embodiment has been described using paper as a raw material, but for a pladan using a plastic sheet, if the process for producing a double-sided cardboard is replaced with a process for producing a conventional pladan, it can be applied as it is. Can do.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Making Paper Articles (AREA)

Abstract

A folding device 70 according to the present invention is provided with: a conveyance unit for sending long double-sided cardboard 60 in a direction perpendicular to ripples in the long double-sided cardboard 60; a crease-imparting unit 100 for imparting creases to the long double-sided cardboard 60 at a prescribed interval L; a first conveyance platform 210 provided downstream from the crease-imparting unit 100, the first conveyance platform 210 having a prescribed upward angle of inclination; a second conveyance platform 220 provided downstream from the first conveyance platform 210, the second conveyance platform 220 having a smaller angle of inclination than does the first conveyance platform 210; a receiving platform 240 on which the folded long double-sided cardboard 60 is placed; and a receiving platform elevator unit 232 for lowering the receiving platform 240 while adjusting the same such that the uppermost surface of the long double-sided cardboard 60 placed on the receiving platform 240 moves downward from the second conveyance platform 220 by a distance that is 0.8-1.2 times the interval L. This makes it possible for continuously produced long double-sided cardboard to be folded into a bellows shape by a simple and compact mechanism.

Description

長尺両面段ボールの折り畳み方法及び装置Method and apparatus for folding long double-sided cardboard
　本発明は、多数の段ボール箱等を製造する際の原材料となる長尺の両面段ボールを製造する際に、それをジャバラ状に折り畳む方法及び装置に関する。 The present invention relates to a method and an apparatus for folding a long double-sided cardboard, which is a raw material for manufacturing a large number of cardboard boxes and the like, into a bellows shape.
　近年、多様な被梱包物に対応して個別に段ボール箱を作製したいという、いわゆるオンデマンドによる段ボール箱製造に対する要望が高まってきている。そのような場合、従来の定形の板状の段ボールシートから様々な展開形状の段ボール箱を製造していたのでは、切り出しの無駄が多い。 In recent years, there has been an increasing demand for so-called on-demand cardboard box manufacturing, in which it is desired to individually manufacture cardboard boxes corresponding to various packages. In such a case, if cardboard boxes having various unfolded shapes are manufactured from a conventional plate-shaped corrugated sheet, there is a lot of waste in cutting.
　そこで、長尺な段ボール素材より、必要なときに必要な長さだけ引き出して個別の被梱包物に対応した段ボール箱用の多様な大きさ、形状の段ボールシートを切り出す装置が提案されている（特許文献１）。
　段ボール箱の素材としては、通常、両面段ボールが用いられるが、両面段ボールの場合はロール状に巻き取ることが困難であることから、オンデマンド段ボール箱製造用素材としては、通常、両面段ボールをジャバラ状に折り畳んだものが用いられる（非特許文献１）。 In view of this, an apparatus has been proposed for cutting out cardboard sheets of various sizes and shapes for cardboard boxes that are drawn out from a long cardboard material by the required length when necessary (corresponding to individual packages) ( Patent Document 1).
Double-sided cardboard is usually used as the material for cardboard boxes. However, double-sided cardboard is usually used as a material for manufacturing on-demand cardboard boxes because it is difficult to wind in a roll. What was folded in the shape is used (nonpatent literature 1).
　両面段ボールの製造工程において、連続的に製造される長尺な両面段ボールを最終工程でジャバラ状に折り畳む装置として、特許文献２に記載の装置がある。この折り畳み装置では、十字に配置したアームを回転させ、アームの先端から垂直に突出するロッドにより、連続的に供給される長尺の両面段ボールを所定の間隔毎に折り曲げ、畳むことで、両面段ボールをジャバラ状に積み上げる。 There is an apparatus described in Patent Document 2 as an apparatus that folds long double-sided cardboards that are continuously manufactured into a bellows shape in the final process in a double-sided cardboard manufacturing process. In this folding device, the arm placed in a cross is rotated, and a long double-sided cardboard that is continuously supplied is bent and folded at a predetermined interval by a rod that protrudes vertically from the tip of the arm. Are stacked in a bellows shape.
国際公開第WO2014/119439号International Publication No.WO2014 / 119439 特表2015-509473号Special table 2015-509473
　特許文献２に記載の装置では、複雑且つ大がかりな機構が必要であり、アームが回転するためのスペースも必要となる。 The apparatus described in Patent Document 2 requires a complicated and large-scale mechanism, and also requires a space for the arm to rotate.
　本発明が解決しようとする課題は、連続的に製造される長尺の両面段ボールを、簡単且つコンパクトな機構でジャバラ状に折り畳むことができる方法及びそのための装置を提供することである。 The problem to be solved by the present invention is to provide a method and apparatus for folding a continuously produced long double-sided cardboard in a bellows shape with a simple and compact mechanism.
　上記課題を解決するために成された本発明に係る長尺両面段ボールの折り畳み方法は、
　a) 波目に垂直な方向に搬送される長尺両面段ボールに所定の間隔Lで折罫を付与するステップと、
　b) 前記折罫が付与された長尺両面段ボールを、所定の登りの傾斜角を有する第１搬送台からより小さい傾斜角を有する第２搬送台に送るステップと、
　c) 折り畳まれた長尺両面段ボールを載置する受け台を、該折り畳まれた長尺両面段ボールの最上面が前記第２搬送台から前記間隔Lの0.8～1.2倍の距離だけ下方となるように調節しつつ下降させるステップと
　を有することを特徴とする。 In order to solve the above problems, a method for folding a long double-sided cardboard according to the present invention is as follows.
a) applying a crease at a predetermined interval L to a long double-sided cardboard conveyed in a direction perpendicular to the wave;
b) sending the long double-sided corrugated cardboard with the creases to a second carrier having a smaller inclination angle from a first carrier having a predetermined climb angle;
c) The cradle for placing the folded long double-sided cardboard is placed so that the uppermost surface of the folded long-sided cardboard is at a distance of 0.8 to 1.2 times the distance L from the second transport table. And a step of lowering while adjusting to.
　本発明に係る長尺両面段ボールの折り畳み方法では、まず、波目に垂直な方向に搬送される長尺両面段ボールに所定の間隔Lで折罫を付与する。この折罫は、該長尺両面段ボールの全幅に設けてもよいし、一部にのみ設けてもよい。また、断続的に設けてもよい。一部又は断続的に設ける場合、両端には折罫を設けることが望ましい。折罫は1本の押し罫で構成されるものであってもよいが、2本の近接した（該長尺両面段ボールの厚さの1～3倍の間隔を設けた）押し罫で構成されるものとすることが望ましい。詳しくは、特願2016-033249に記載されている。 In the method of folding a long double-sided cardboard according to the present invention, first, a crease is given at a predetermined interval L to a long double-sided cardboard conveyed in a direction perpendicular to the wave. This crease may be provided over the entire width of the long double-sided cardboard or may be provided only in part. Moreover, you may provide intermittently. When partially or intermittently provided, it is desirable to provide creases at both ends. The crease may be composed of a single crease, but is composed of two adjacent creases (with an interval of 1 to 3 times the thickness of the long double-sided cardboard). It is desirable that Details are described in Japanese Patent Application No. 2016-033249.
　このような折罫が付与された長尺両面段ボールを、所定の登りの傾斜角を有する第１搬送台から、より小さい傾斜角を有する第２搬送台に送る。第１搬送台の傾斜角としては、20～45°の範囲が望ましい。この第２搬送台の傾斜角は、登り傾斜角であってもよいし、水平であってもよいし、やや下りの傾斜角であってもよい。第２搬送台の傾斜角としては、0～30°の範囲が望ましい。このように、予め折罫を付与した長尺両面段ボールを登りの傾斜角を有する第１搬送台から、より小さい傾斜角を有する第２搬送台に送ることにより、その境界において長尺両面段ボールが折罫のところで少し折れ曲がり、折癖が付く。 The long double-sided corrugated cardboard with such a crease is sent from the first transport table having a predetermined climb angle to the second transport table having a smaller tilt angle. The inclination angle of the first carrier is preferably in the range of 20 to 45 °. The inclination angle of the second transport table may be an ascending inclination angle, a horizontal inclination angle, or a slightly downward inclination angle. The inclination angle of the second carrier is preferably in the range of 0-30 °. In this way, by sending a long double-sided corrugated cardboard with pre-creased lines from the first transport base having an ascending inclination angle to the second transport base having a smaller inclination angle, the long double-sided corrugated cardboard is It bends slightly at the crease and has a signature.
　こうして折罫のところで折癖が付いた長尺両面段ボールは、第２搬送台から受け台に自由落下する際に、その折癖のところで大きく折れ曲がる。ここで、折り畳まれた長尺両面段ボールの最上面が、第２搬送台よりも常に0.8L～1.2Lの距離だけ下方となるように受け台の高さが調節されているため、受け台において、図１に示すように、
　(1) 直前の折罫が手前側に来ている場合、次の折罫は後ろ側に行き、
　(2) 直前の折罫が後ろ側に行っている場合、次の折罫との間の長尺両面段ボールの自重により、長尺両面段ボールは該次の折罫において逆向きに折れ曲がり、該次の折罫は手前側に来る。
　こうして、長尺両面段ボールは受け台上においてジャバラ状に折り畳まれる。 Thus, when the long double-sided cardboard with creases at the crease falls freely from the second transport table to the cradle, it is greatly bent at the creases. Here, the height of the cradle is adjusted so that the uppermost surface of the folded long double-sided cardboard is always lower than the second carrier by a distance of 0.8L to 1.2L. As shown in FIG.
(1) If the previous crease is on the near side, the next crease goes to the back,
(2) When the previous crease is on the back side, the long double-sided cardboard is bent in the reverse direction at the next crease due to the weight of the long double-sided cardboard between the next crease and the next The crease is on the near side.
Thus, the long double-sided cardboard is folded in a bellows shape on the cradle.
　上記本発明に係る方法を実施するための長尺両面段ボールの折り畳み装置は、
　a) 長尺両面段ボールを、その波目に垂直な方向に送給する搬送部と、
　b) 前記長尺両面段ボールに所定の間隔Lで折罫を付与する折罫付与部と、
　c) 前記折罫付与部の下流に設けられた、所定の登りの傾斜角を有する第１搬送台と、
　d) 前記第１搬送台の下流に設けられた、該第１搬送台よりも小さい傾斜角を有する第２搬送台と、
　e) 折り畳まれた長尺両面段ボールを載置する受け台と、
　f) 前記受け台を、載置された長尺両面段ボールの最上面が前記第２搬送台から前記間隔Lの0.8～1.2倍の距離だけ下方となるように調節しつつ下降させる受け台昇降部と
　を備えることを特徴とする。 An apparatus for folding a long double-sided cardboard for carrying out the method according to the present invention,
a) a transport unit for feeding a long double-sided cardboard in a direction perpendicular to the wave;
b) a crease imparting section for imparting creases to the long double-sided cardboard at a predetermined interval L;
c) a first transport stand provided downstream of the crease-applying section and having a predetermined climbing inclination angle;
d) a second transport table provided downstream of the first transport table and having an inclination angle smaller than that of the first transport table;
e) a cradle for placing a folded long double-sided cardboard;
f) A cradle lifting / lowering unit that lowers the cradle while adjusting the uppermost surface of the placed long double-sided cardboard so that the uppermost surface of the long corrugated cardboard is lower than the distance L by 0.8 to 1.2 times the distance L It is characterized by including these.
　上記受け台昇降部は、受け台の下降速度を、長尺両面段ボールの送給速度、前記折罫の間隔L、及び、該長尺両面段ボールの厚さから計算で決定することができる。或いは、載置された長尺両面段ボールの最上面の位置を検出するセンサを備えていてもよい。 The cradle lifting / lowering section can determine the descending speed of the cradle by calculation based on the feeding speed of the long double-sided cardboard, the interval L between the creases, and the thickness of the long double-sided cardboard. Or you may provide the sensor which detects the position of the uppermost surface of the mounted long double-sided cardboard.
　本発明に係る長尺両面段ボールの折り畳み装置において、更に、
　g) 前記第２搬送台の後方の手前側下方に設けられた、前記第２搬送台から前記受け台に落下する長尺両面段ボールを弾き返す弾性体
　を備えることが望ましい。 In the folding device for long double-sided cardboard according to the present invention,
g) It is desirable to provide an elastic body that is provided below and close to the rear side of the second transfer table and repels the long double-sided cardboard that drops from the second transfer table to the receiving table.
　第２搬送台から送り出された長尺両面段ボールは、上記(2)の場合に、前記「次の折罫」（以下、これを第２折罫と呼ぶ）とその次の折罫（第３折罫と呼ぶ）の間の部分が重力で受け台に落下する際に前記弾性体に当たり、その反動で背中を押されるように押し返される。この押し返しの動作により、長尺両面段ボールは第２折罫において逆向きに折れ曲がりやすくなる。 In the case of (2) above, the long double-sided corrugated cardboard sent out from the second carrier is the “next crease” (hereinafter referred to as the second crease) and the next crease (the third crease). The part between the two is called a crease and hits the elastic body when it falls to the cradle due to gravity, and is pushed back so that the back is pushed by the reaction. By this pushing back operation, the long double-sided cardboard is easily bent in the reverse direction at the second crease.
　こうして第２折罫が手前側に来て折り畳まれると上記(1)の場合に移行し、第２搬送台から送り出された長尺両面段ボールはそのまままっすぐ進み、第３折罫は受け台の後ろ側の方に向かう。この場合、第３折罫は第１搬送台と第２搬送台の間で曲がった方向にそのまま折り曲げられ、折り畳まれる。 Thus, when the second crease comes to the near side and is folded, the process proceeds to the case of (1) above, the long double-sided cardboard fed from the second transport board advances straight, and the third crease is behind the cradle. Head towards the side. In this case, the third crease is folded and folded as it is in the bent direction between the first conveyance table and the second conveyance table.
　上記弾性体としてはコイルバネを用いることもできるが、前記第２搬送台の後端から後方且つ下方に突出するように設けられた弧状の板バネとすることが望ましい。これにより、落下してきた長尺両面段ボールを弾き返す際に該長尺両面段ボールの表面に疵を付けることがない。 As the elastic body, a coil spring can be used, but it is desirable that the elastic body is an arc-shaped plate spring provided so as to protrude rearward and downward from the rear end of the second transport table. Thereby, when flipping back the long double-sided cardboard that has fallen, the surface of the long double-sided cardboard is not wrinkled.
　本発明に係る長尺両面段ボールの折り畳み方法及び装置では、連続的に搬送される長尺両面段ボールに予め折罫を形成し、その折罫に折癖を付けておいた上で、該長尺両面段ボールを第２搬送台から受け台に自由落下させる。この自由落下の距離を適切な値に設定しておくことにより、自重により自動的に長尺両面段ボールをジャバラ状に折り畳むことができる。また、第２搬送台の後方の手前側下方に弾性体を設けることにより、長尺両面段ボールの自由落下の際の自重による自動的な折り畳み作用がより確実となる。このように、本発明に係る長尺両面段ボールの折り畳み方法及び装置では、簡単且つコンパクトな機構で、連続的に搬送される長尺の両面段ボールをジャバラ状に折り畳むことができる。 In the folding method and apparatus for a long double-sided cardboard according to the present invention, a crease is formed in advance on a long-sided double-sided cardboard that is continuously conveyed, and a crease is attached to the fold. The double-sided cardboard is allowed to fall freely from the second carrier to the cradle. By setting the free fall distance to an appropriate value, the long double-sided cardboard can be automatically folded into bellows by its own weight. In addition, by providing an elastic body on the lower side on the near side behind the second transport table, the automatic folding action due to its own weight when the long double-sided cardboard is freely dropped becomes more reliable. Thus, in the method and apparatus for folding a long double-sided cardboard according to the present invention, a long double-sided cardboard that is continuously conveyed can be folded into a bellows shape with a simple and compact mechanism.
本発明に係る長尺両面段ボールの折り畳み方法を説明するための概念図。The conceptual diagram for demonstrating the folding method of the long double-sided cardboard which concerns on this invention. 本発明に係る折り畳み装置を使用した長尺両面段ボールの製造工程の概略構成図。The schematic block diagram of the manufacturing process of a long double-sided cardboard using the folding apparatus which concerns on this invention. 本発明の一実施形態に係る折り畳み装置の折罫付与部の概略構成を示す側面図(a)、及び正面図(b)。The side view (a) which shows schematic structure of the crease provision part of the folding apparatus which concerns on one Embodiment of this invention, and a front view (b). 同実施形態における折罫付与部の押圧部の先端の構造を説明する図。The figure explaining the structure of the front-end | tip of the press part of the crease provision part in the embodiment. 同実施形態における押圧部の先端形状の例を示す図であり、(a)は台形状の突起部を有する例、(b)は半円形の突起部を有する例、(c)は台形状の突起部の先端が丸形である例。It is a diagram showing an example of the tip shape of the pressing portion in the embodiment, (a) is an example having a trapezoidal projection, (b) is an example having a semicircular projection, (c) is a trapezoidal projection. An example in which the tip of the protrusion is round. 同実施形態に係る折罫付与部により両面段ボールを押圧する様子を示す図。The figure which shows a mode that a double-sided cardboard is pressed by the crease provision part which concerns on the same embodiment. 同実施形態に係る折罫付与部により折罫が付与された両面段ボールを示す図。The figure which shows the double-sided cardboard in which the crease was provided by the crease provision part which concerns on the embodiment. 同実施形態に係る折り畳み部の概略的な全体構成を示す側面図。The side view which shows the schematic whole structure of the folding part which concerns on the same embodiment. 折り畳み部の概略的な全体構成を示す上面図。The top view which shows the schematic whole structure of a folding part. 折り畳み部の折り曲げアシスト機構及び受け部付近を拡大して示す側面図。The side view which expands and shows the bending assistance mechanism and receiving part vicinity of a folding part. 折罫を付与した両面段ボールを折り畳む様子を示す説明図。Explanatory drawing which shows a mode that the double-sided cardboard which provided the crease was folded.
　まず、図２により、長尺両面段ボールの製造工程の一例を説明する。表ライナー紙６１のロール１２、中しん紙６２のロール１４、裏ライナー紙６３のロール１６からそれぞれ原紙６１、６２、６３が引き出され、まず、シングルフェイサ２０においてコルゲータ２１により中しん紙６２に波形の段が形成され、表ライナー紙６１と接着されて片面段ボール１７が製造される。次にダブルフェイサ３０において、この片面段ボール１７の波板側に裏ライナー紙６３が接着され、長尺両面段ボール６０（以下、両面段ボール６０と呼ぶ）が製造される。つまり、両面段ボール６０は、表ライナー紙６１、中しん紙６２、裏ライナー紙６３から構成される。なお、各原紙は接着剤による貼合前にヒータ２２、３１、３２により加熱され、製造された両面段ボール６０もヒータ３３により加熱され、接着が養生（固定）される。 First, an example of a manufacturing process of a long double-sided cardboard will be described with reference to FIG. The base papers 61, 62, and 63 are drawn out from the roll 12 of the front liner paper 61, the roll 14 of the medium liner paper 62, and the roll 16 of the back liner paper 63, respectively. First, the corrugator 21 in the single facer 20 forms the intermediate paper 62. Corrugated steps are formed and bonded to the front liner paper 61 to produce a single-sided cardboard 17. Next, in the double facer 30, the back liner paper 63 is bonded to the corrugated side of the single-sided cardboard 17 to produce a long double-sided cardboard 60 (hereinafter referred to as double-sided cardboard 60). That is, the double-sided cardboard 60 is composed of a front liner paper 61, an intermediate paper 62, and a back liner paper 63. Each base paper is heated by the heaters 22, 31, and 32 before being bonded with the adhesive, and the manufactured double-sided cardboard 60 is also heated by the heater 33 to cure (fix) the adhesion.
　製造された両面段ボール６０は、図示しない搬送装置によって波目と垂直な方向に搬送され、本発明に係る折り畳み装置７０まで移動することにより、交互に折り込まれ、ジャバラ状に折り畳まれる。 The manufactured double-sided cardboard 60 is conveyed in a direction perpendicular to the wave pattern by a conveyance device (not shown), and is alternately folded and folded into a bellows shape by moving to the folding device 70 according to the present invention.
　折り畳み装置７０は、両面段ボール６０に対して所定の長さ毎に両面側から折罫を形成する折罫付与部１００と、折罫が付与された後の両面段ボール６０をジャバラ状に折り畳む折り畳み部２００とを備えている。以下、折り畳み装置７０の具体的な実施形態について説明する。 The folding device 70 includes a crease imparting unit 100 that forms creases from both sides with respect to the double-sided cardboard 60 every predetermined length, and a fold-up unit that folds the double-sided cardboard 60 after the creases are given in a bellows shape. 200. Hereinafter, a specific embodiment of the folding device 70 will be described.
　本実施形態に係る折り畳み装置７０の折罫付与部１００の構成を図３(a)及び図３(b)に示す。折罫付与部１００は、上下に並んで配置された第１押罫ローラ１４１及び第２押罫ローラ１４２と、これらを回転駆動させる第１駆動部１２１及び第２駆動部１２２と、これら駆動部を制御する制御部１３０からなる。図３(a)及び図３(b)において、両面段ボール６０は、表（おもて）面が上、裏面が下を向くように、紙面の左方向から右方向に向かってほぼ水平な状態で連続的に折罫付与部１００に供給される。 3A and 3B show the configuration of the crease imparting unit 100 of the folding device 70 according to the present embodiment. The crease imparting unit 100 includes a first ruled roller 141 and a second ruled roller 142 arranged side by side in the vertical direction, a first drive unit 121 and a second drive unit 122 that rotationally drive them, and these drive units. It consists of the control part 130 which controls. 3 (a) and 3 (b), the double-sided cardboard 60 is in a substantially horizontal state from the left side to the right side of the paper so that the front (front) surface is facing up and the back surface is facing down. Are continuously supplied to the crease provision unit 100.
　第１押罫ローラ１４１及び第２押罫ローラ１４２は、それぞれ両面段ボール６０の幅方向に延設され、両面段ボール６０よりも広い幅を有する。また、これら押罫ローラ１４１、１４２の表面には、該押罫ローラの軸方向に延びる上部押圧部材１１１及び下部押圧部材１１２がそれぞれ設けられている。上部押圧部材１１１及び下部押圧部材１１２は、いずれも押罫ローラの軸方向長さと同じ長さを有する断面が略長方形状の棒状部材からなり、その一部を押罫ローラの表面に形成された溝部に嵌合することにより該押罫ローラの表面に取り付けられている。 The first ruler roller 141 and the second ruler roller 142 are each extended in the width direction of the double-sided cardboard 60 and have a wider width than the double-sided cardboard 60. Further, an upper pressing member 111 and a lower pressing member 112 extending in the axial direction of the ruler roller are provided on the surfaces of the ruler rollers 141 and 142, respectively. Each of the upper pressing member 111 and the lower pressing member 112 is composed of a rod-shaped member having a substantially rectangular cross section having the same length as the axial length of the ruled roller, and a part thereof is formed on the surface of the ruled roller. It is attached to the surface of the ruled roller by fitting in the groove.
　図４に上部押圧部材１１１と下部押圧部材１１２の先端部の構造を示す。上部押圧部材１１１のうち第１押罫ローラ１４１から突出する部分の先端面には、第１押罫ローラ１４１の軸方向に延びる溝１１１ｂが形成されており、これにより、上部押圧部材１１１は、その先端面に2本の突条部１１１ａ１（両面段ボール６０の流れ方向の上流側）及び突条部１１１ａ２（同・下流側）を有する。2本の突条部１１１ａ１及び１１１ａ２は互いに平行で、且つ、それぞれが両面段ボール６０の厚さの0.5～3倍程度の幅W1（両面段ボール６０の流れ方向の長さ）を有している。これら突条部１１１ａ１及び１１１ａ２は両面段ボール６０の厚さの1～3倍の間隔W2を空けて設けられている。突条部１１１ａ１及び１１１ａ２は、その端面のうち両面段ボール６０の流れ方向両側の角部がいずれも面取りされており、両面段ボール６０に対して傾斜した面となっている（図４に、これら傾斜面のうち突条部１１１ａ１の上流側のものに１１１ｃ１、下流側のものに１１１ｄ１、突条部１１１ａ２の上流側のものに１１１ｃ２、下流側のものに１１１ｄ２との符号を付す）。 FIG. 4 shows the structure of the tip portions of the upper pressing member 111 and the lower pressing member 112. A groove 111b extending in the axial direction of the first ruler roller 141 is formed on a tip surface of a portion of the upper presser member 111 protruding from the first ruler roller 141. The front end surface has two protrusions 111a1 (upstream in the flow direction of the double-faced cardboard 60) and protrusions 111a2 (same and downstream). The two ridges 111a1 and 111a2 are parallel to each other, and each has a width W1 (the length of the double-sided cardboard 60 in the flow direction) that is about 0.5 to 3 times the thickness of the double-sided cardboard 60. These protrusions 111a1 and 111a2 are provided with a gap W2 that is 1 to 3 times the thickness of the double-sided cardboard 60. The protrusions 111a1 and 111a2 have chamfered corners on both sides in the flow direction of the double-faced cardboard 60 among the end faces, and are inclined with respect to the double-faced cardboard 60 (see FIG. Of the surface, 111c1 is attached to the upstream side of the protrusion 111a1, 111d1 is attached to the downstream, 111c2 is attached to the upstream of the protrusion 111a2, and 111d2 is attached to the downstream.
　なお、面取りした部分は曲面（Ｒ面）でもよく、平面でもよい（図５(a)参照）。また、突条部の先端部の断面を半円形にすることにより、突条部に傾斜面１１１ｅを設けてもよい（図５(b)）。さらに、突条部の両側を傾斜した平面状（面１１１ｆ）にし、これら傾斜した面によって挟まれた面１１１ｇを曲面状にしてもよい（図５(c)）。下部押圧部材１１２の構造は、上部押圧部材１１１と同一であり、その先端面に2本の突条部１１２ａ１（上流側）及び１１２ａ２（下流側）を有する。 The chamfered portion may be a curved surface (R surface) or a flat surface (see FIG. 5 (a)). Moreover, you may provide the inclined surface 111e in a protrusion part by making the cross section of the front-end | tip part of a protrusion part into a semicircle (FIG.5 (b)). Furthermore, the both sides of the ridge portion may be inclined flat (surface 111f), and the surface 111g sandwiched between these inclined surfaces may be curved (FIG. 5 (c)). The structure of the lower pressing member 112 is the same as that of the upper pressing member 111, and has two protrusions 112a1 (upstream side) and 112a2 (downstream side) on the tip surface thereof.
　また、第１押罫ローラ１４１と第２押罫ローラ１４２の位置は、上部押圧部材１１１と下部押圧部材１１２が接近した際に、上部押圧部材１１１の上流側の突条部１１１ａ１が下部押圧部材１１２に設けられた溝１１２ｂに嵌るように、その回転中心を両面段ボール６０の流れ方向にずらして配置されている。このとき、上部押圧部材１１１の上流側の突条部１１１ａ１が有する上流側の傾斜面１１１ｃ１と、下部押圧部材１１２の上流側の突条部１１２ａ１が有する下流側の傾斜面１１２ｄ１が対向し、上部押圧部材１１１の下流側の突条部１１１ａ２が有する上流側の傾斜面１１１ｃ２と、下部押圧部材１１２の下流側の突条部１１２ａ２が有する下流側の傾斜面１１２ｄ２が対向している。 Further, the positions of the first ruler roller 141 and the second ruler roller 142 are such that when the upper pressing member 111 and the lower pressing member 112 approach each other, the ridge 111a1 on the upstream side of the upper pressing member 111 is located on the lower pressing member. The center of rotation is arranged so as to be shifted in the flow direction of the double-sided cardboard 60 so as to fit into the groove 112 b provided in 112. At this time, the upstream inclined surface 111c1 of the upstream protruding portion 111a1 of the upper pressing member 111 and the downstream inclined surface 112d1 of the upstream protruding portion 112a1 of the lower pressing member 112 are opposed to each other. The upstream inclined surface 111c2 included in the downstream protruding portion 111a2 of the pressing member 111 and the downstream inclined surface 112d2 included in the downstream protruding portion 112a2 of the lower pressing member 112 face each other.
　第１駆動部１２１と第２駆動部１２２はそれぞれモータと歯車等の駆動機構からなり、モータの回転駆動力を駆動機構を介して第１押罫ローラ１４１、第２押罫ローラ１４２に伝達させて回転駆動する。制御部１３０は、第１駆動部１２１及び第２駆動部１２２に制御指令を送ることで第１押罫ローラ１４１及び第２押罫ローラ１４２の回転速度を制御し、両押罫ローラの上部押圧部材１１１と下部押圧部材１１２を一定時間毎に対向させる。　 Each of the first drive unit 121 and the second drive unit 122 includes a drive mechanism such as a motor and a gear, and transmits the rotational driving force of the motor to the first ruler roller 141 and the second ruler roller 142 via the drive mechanism. To rotate. The control unit 130 controls the rotational speed of the first ruled roller 141 and the second ruled roller 142 by sending a control command to the first drive unit 121 and the second drive unit 122, and presses the upper side of both ruled rollers. The member 111 and the lower pressing member 112 are opposed to each other at regular intervals. *
　上記構成の折罫付与部１００では、次のようにして両面段ボール６０に折罫が付与される。まず、第１駆動部１２１及び第２駆動部１２２は、制御部１３０から送られる制御指令に応じて、第１押罫ローラ１４１及び第２押罫ローラ１４２を回転駆動する。折罫付与部１００に連続的に供給される両面段ボール６０は、一定の長さＬ（一例として長さＬ＝1100mm）毎に上部押圧部材１１１の突条部１１１ａ１及び１１２ａ２と下部押圧部材１１２の突条部１１２ａ１及び１１２ａ２のそれぞれに形成された傾斜面１１１ｃ１と傾斜面１１２ｄ１、及び１１１ｃ２と傾斜面１１２ｄ２に挟まれることで、図６に示すように両側から押圧されて押罫が形成される。これにより、図７に示すように、近接した2箇所の押罫から成る折罫が間隔L（例えば間隔L＝1100mm）毎に両面段ボール６０に付与される。2個の近接した押罫の間隔は、例えば両面段ボール６０の厚さの1～3倍程度とされる。 In the crease providing unit 100 configured as described above, creases are applied to the double-sided cardboard 60 as follows. First, the first drive unit 121 and the second drive unit 122 rotationally drive the first ruled roller 141 and the second ruled roller 142 in accordance with a control command sent from the control unit 130. The double-sided corrugated board 60 continuously supplied to the crease providing unit 100 is provided with the protrusions 111a1 and 112a2 of the upper pressing member 111 and the lower pressing member 112 for every predetermined length L (length L = 1100 mm as an example). By being sandwiched between the inclined surface 111c1 and the inclined surface 112d1, and 111c2 and the inclined surface 112d2 formed on the ridges 112a1 and 112a2, respectively, as shown in FIG. 6, it is pressed from both sides to form a ruled line. As a result, as shown in FIG. 7, a crease formed of two adjacent creases is applied to the double-faced cardboard 60 at every interval L (for example, the interval L = 1100 mm). The distance between two adjacent ruled lines is, for example, about 1 to 3 times the thickness of the double-sided cardboard 60.
　なお、本実施形態に係る折罫付与部１００は、折罫を両面段ボール６０の全幅に設けたが、一部にのみ設けても良い。また、両面段ボール６０の幅方向両端と中央に断続的に折罫を設けても良い。さらに、本実施形態では、折罫を２本の押罫から構成したが、１本の押罫から折罫を構成しても良い。 In addition, although the crease providing unit 100 according to the present embodiment has the crease provided in the entire width of the double-sided cardboard 60, it may be provided only in a part. In addition, creases may be provided intermittently at both ends and the center of the double-sided cardboard 60. Further, in the present embodiment, the crease is composed of two creases, but the crease may be composed of one crease.
　以上のようにして折罫が付与された両面段ボール６０は、図８及び図９に示すように、中継搬送部１８０を経て折り畳み部２００に送られる。 The double-sided cardboard 60 to which the creases are applied as described above is sent to the folding unit 200 via the relay conveyance unit 180 as shown in FIGS.
　中継搬送部１８０は、始端ローラ１８１と終端ローラ１８２の間に掛け渡された２個の搬送ベルト１８３を有する、長さが約15cmのベルトコンベアからなる。中継搬送部１８０は、終端ローラ１８２が、折り畳み部２００の入口部とほぼ同じ高さ位置（上昇位置）とそれよりも低い位置（下降位置）との間で上下動可能となっている。通常の搬送時は終端ローラ１８２は上昇位置にあり、折罫付与部１００から搬送されてくる両面段ボール６０を折り畳み部２００に送出する。一方、終端ローラ１８２が下降位置（図８に破線で示す状態）にあるときは、折罫付与部１００と折り畳み部２００の間に開口が形成される。従って、例えば両面段ボール６０に傷や破れ等の欠陥が見つかった場合には、この開口を通じて両面段ボール６０を取り出すことができる。 The relay conveyance unit 180 includes a belt conveyor having a length of about 15 cm and having two conveyance belts 183 stretched between the start roller 181 and the end roller 182. In the relay conveyance unit 180, the end roller 182 can move up and down between a height position (upward position) substantially the same as the entrance of the folding unit 200 and a lower position (downward position). During normal conveyance, the terminal roller 182 is in the raised position, and the double-sided cardboard 60 conveyed from the crease applying unit 100 is sent to the folding unit 200. On the other hand, when the end roller 182 is in the lowered position (a state indicated by a broken line in FIG. 8), an opening is formed between the crease applying unit 100 and the folding unit 200. Therefore, for example, when a defect such as a scratch or tear is found in the double-sided cardboard 60, the double-sided cardboard 60 can be taken out through this opening.
　次に、折り畳み部２００の構成を図８～図１０を参照して説明する。折り畳み部２００は、折罫付与部１００から中継搬送部１８０を経て送出されてくる両面段ボール６０を高い位置まで搬送する第１搬送台２１０及び第２搬送台２２０と、該第２搬送台２２０の終端から自然落下する両面段ボール６０を受ける受け部２３０と、両面段ボール６０が第２搬送台２２０から自然落下する際に該両面段ボール６０が折罫で折れ曲がることを補助する折り曲げアシスト機構２６０とを備えている。 Next, the configuration of the folding unit 200 will be described with reference to FIGS. The folding unit 200 includes a first transport table 210 and a second transport table 220 that transport the double-sided cardboard 60 sent from the crease imparting unit 100 through the relay transport unit 180 to a high position, and the second transport table 220. A receiving portion 230 that receives the double-sided cardboard 60 that naturally falls from the end, and a folding assist mechanism 260 that assists the double-sided cardboard 60 to bend along a crease when the double-sided cardboard 60 naturally falls from the second transport table 220 are provided. ing.
　第１搬送台２１０は、中継搬送部１８０の終端ローラ１８２が上昇位置にあるときの高さ位置から約30°の登りの傾斜角で傾斜するように配置された一対のフレーム２１１、該一対のフレーム２１１の間に回転自在に支持された始端ローラ２１２及び終端ローラ２１３、並びに４本の従動ローラ２１５からなる。第２搬送台２２０は、第１搬送台２１０のフレーム２１１の終端部に、その始端部が連結された、約5°の登りの傾斜角で傾斜する一対のフレーム２２１、該フレーム２２１の終端部の間に回転自在に支持された回転ローラ２２２、及び該回転ローラ２２２を回転駆動するモータ２２２ａを備えている。第１搬送台２１０の始端ローラ２１２と第２搬送台２２０の回転ローラ２２２の間には２個の搬送ベルト２２５が掛け渡されている。搬送ベルト２２５は、途中、第１搬送台２１０の終端ローラ２１３を経由しており、そこで登り傾斜角が変更される。 The first transport table 210 includes a pair of frames 211 disposed so as to be inclined at an inclination angle of about 30 ° from the height position when the terminal roller 182 of the relay transport unit 180 is in the raised position. It comprises a start roller 212 and a terminal roller 213 that are rotatably supported between frames 211, and four driven rollers 215. The second transfer table 220 has a pair of frames 221 inclined at an inclination angle of about 5 ° and connected to the end of the frame 211 of the first transfer table 210, and the end of the frame 221. A rotating roller 222 that is rotatably supported between the two and a motor 222a that rotationally drives the rotating roller 222. Two conveying belts 225 are stretched between the starting roller 212 of the first conveying table 210 and the rotating roller 222 of the second conveying table 220. The conveyance belt 225 passes through the end roller 213 of the first conveyance table 210 on the way, and the climbing inclination angle is changed there.
　第１搬送台２１０のフレーム２１１の終端部及び終端ローラ２１３、第２搬送台２２０のフレーム２２１及び回転ローラ２２２は、いずれも支持台２５０の上部に支持フレーム２５１を介して固定されている。支持台２５０は、４本の支柱２５２とこれら支柱２５２を連結する複数の連結フレーム２５３から成る。 The end portion and end roller 213 of the frame 211 of the first transport table 210 and the frame 221 and the rotation roller 222 of the second transport table 220 are all fixed to the upper part of the support table 250 via the support frame 251. The support base 250 includes four support columns 252 and a plurality of connection frames 253 that connect the support columns 252.
　受け部２３０は支持台２５０の支柱２５２で囲まれた略直方体状の収容空間から構成されており、該収容空間内に矩形板状の受け台２４０が配置されている。受け台２４０は昇降機構２３２によって、受け部２３０内を上下動される。昇降機構２３２は、例えば受け部２３０内の上部の搬送方向上流側と下流側にそれぞれ２個ずつ配置された４個の定滑車２３３と、該定滑車２３３に掛けられたワイヤ２３４と、該ワイヤ２３４の一端側を巻き上げる巻き上げモータ２３５等から構成される。ワイヤ２３４の他端側はそれぞれ受け台２４０の四隅に固定されている。 The receiving part 230 is configured by a substantially rectangular parallelepiped-shaped accommodation space surrounded by the support column 252 of the support base 250, and a rectangular plate-shaped receiving base 240 is disposed in the accommodation space. The cradle 240 is moved up and down in the cradle 230 by the elevating mechanism 232. The elevating mechanism 232 includes, for example, four fixed pulleys 233 that are respectively arranged on the upstream side and the downstream side in the transport direction of the upper part in the receiving unit 230, the wires 234 that are hung on the constant pulley 233, and the wires It is comprised from the winding motor 235 etc. which wind up the one end side of 234. The other ends of the wires 234 are fixed to the four corners of the cradle 240, respectively.
　初期状態においては、受け台２４０は、その上面から第２搬送台２２０の終端までの距離が両面段ボール６０に付与される折罫の間隔Lの0.8～1.2倍の距離となるように配置されている。その後、両面段ボール６０が折り畳まれた状態で受け台２４０に載置される毎に、その両面段ボール６０の最上面から第２搬送台２２０の終端までの距離が折罫間隔Lの0.8～1.2倍の距離となるように、昇降機構２３２は受け台２４０を下降させる。昇降機構２３２の受け台２４０の下降速度は、制御装置３００（図８参照）によって制御される。 In the initial state, the cradle 240 is arranged so that the distance from the upper surface thereof to the end of the second carrier 220 is 0.8 to 1.2 times the distance L between the creases provided to the double-faced cardboard 60. Yes. Thereafter, every time the double-sided cardboard 60 is folded and placed on the receiving table 240, the distance from the top surface of the double-sided cardboard 60 to the end of the second transport table 220 is 0.8 to 1.2 times the crease interval L. The elevating mechanism 232 lowers the cradle 240 so that the distance becomes. The descending speed of the cradle 240 of the elevating mechanism 232 is controlled by the control device 300 (see FIG. 8).
　制御装置３００は、受け台２４０の下降の他、第１搬送台２１０及び第２搬送台２２０による両面段ボール６０の搬送、及び折罫付与部１００の制御部１３０を制御する。受け台２４０の下降に関して、制御装置３００には、予め入力された両面段ボール６０の厚さT及び折罫の間隔Lが記憶されており、これら厚さT及び間隔Lの値と、両面段ボール６０の搬送速度Sの値から、制御装置３００は受け台２４０の下降速度D＝(S/L)×Tを決定する。なお、実際の操業においては、この計算値を基に下降速度を微調整することが望ましい。 The control device 300 controls the control unit 130 of the crease imparting unit 100 and the conveyance of the double-sided cardboard 60 by the first conveyance table 210 and the second conveyance table 220 in addition to the lowering of the cradle 240. Regarding the lowering of the cradle 240, the control device 300 stores the thickness T of the double-sided cardboard 60 and the interval L of the creases inputted in advance, and the values of the thickness T and the gap L and the double-sided cardboard 60. From the value of the transport speed S, the control device 300 determines the descending speed D = (S / L) × T of the cradle 240. In actual operation, it is desirable to finely adjust the descending speed based on this calculated value.
　折り曲げアシスト機構２６０は、第２搬送台２２０の下流に搬送方向に配置された４本の第１アルミフレーム２６１と、各第１アルミフレーム２６１の下流（受け部２３０の上流）に配置された第２アルミフレーム２６２と、4本の各アルミフレーム２６１、２６２の対に両端が固定された、上に凸に湾曲した、弾性体としてのリボン鋼２６３から成る。リボン鋼２６３は、例えば長さ400～700mm、幅50mm、厚さ1mmのステンレス鋼製の板バネであり、両面段ボール６０に付与される罫線の間隔Lが1100mmのとき、その曲率半径Rが約500～900mmとなるようにその両端が各アルミフレーム対２６１、２６２に固定されている。 The folding assist mechanism 260 includes four first aluminum frames 261 arranged in the conveyance direction downstream of the second conveyance table 220, and a first arrangement arranged downstream of each first aluminum frame 261 (upstream of the receiving portion 230). It consists of two aluminum frames 262 and ribbon steel 263 as an elastic body that is curved upward and has both ends fixed to a pair of four aluminum frames 261 and 262. The ribbon steel 263 is, for example, a stainless steel leaf spring having a length of 400 to 700 mm, a width of 50 mm, and a thickness of 1 mm. When the interval L between the ruled lines applied to the double-sided cardboard 60 is 1100 mm, the radius of curvature R is about Both ends thereof are fixed to the aluminum frame pairs 261 and 262 so as to be 500 to 900 mm.
　第１アルミフレーム２６１は、第２搬送台２２０の下部に位置するフレーム２６４に傾動自在に取り付けられている。このフレーム２６４は支持台２５０の連結フレーム２５２に固定されている。また、第２アルミフレーム２６２は、支持台２５０の連結フレーム２５２に傾動自在に取り付けられている。これら第１アルミフレーム２６１及び第２アルミフレーム２６２の傾斜角度を変更することにより、リボン鋼２６３の曲率半径Rを変化させ、両面段ボール６０が落下する際に当接する位置及び落下してきた両面段ボール６０を弾き返す力を調整することができる。 The first aluminum frame 261 is attached to a frame 264 positioned below the second transfer table 220 so as to be freely tiltable. The frame 264 is fixed to the connection frame 252 of the support base 250. The second aluminum frame 262 is attached to the connecting frame 252 of the support base 250 so as to be tiltable. By changing the inclination angle of the first aluminum frame 261 and the second aluminum frame 262, the radius of curvature R of the ribbon steel 263 is changed, the position where the double-sided cardboard 60 abuts and the double-sided cardboard 60 that has fallen down. You can adjust the force to rebound.
　上記構成の折り畳み部２００では、以下のようにして、折罫が付与された両面段ボール６０が折り畳まれる。
　まず、両面段ボール６０は、第１搬送台２１０によって斜め上方に向かって搬送された後、第２搬送台２２０に送られる。このとき、第２搬送台２２０の傾斜角が第１搬送台２１０の傾斜角よりも小さいため、第１搬送台２１０と第２搬送台２２０の境界において両面段ボール６０が折罫のところで少し折れ曲がり、折癖が付く。 In the folding unit 200 having the above-described configuration, the double-sided cardboard 60 to which the creases are given is folded as follows.
First, the double-sided cardboard 60 is conveyed obliquely upward by the first conveyance table 210 and then sent to the second conveyance table 220. At this time, since the inclination angle of the second conveyance table 220 is smaller than the inclination angle of the first conveyance table 210, the double-sided cardboard 60 is slightly bent at the boundary between the first conveyance table 210 and the second conveyance table 220, There is a compromise.
　続いて、第２搬送台２２０に送られた両面段ボール６０は、該搬送台２２０の終端からリボン鋼２６３を経て受け部２３０内に自由落下する。その際、折癖が付いた両面段ボール６０はその折癖のところで大きく折れ曲がる。ここで、受け台２４０に載置された、折り畳まれた両面段ボール６０の最上面が、第２搬送台２２０の終端よりも常に0.8L～1.2L（Lは両面段ボール６０に形成された折罫の間隔）の距離だけ下方となるように受け台２４０の高さが調節されているため、受け台２４０において、
　(1) 直前の折罫が手前側に来ている場合、次の折罫は後ろ側に行き（図１１(a)の状態）、
　(2) 直前の折罫が後ろ側に行っている場合、次の折罫（以下、第２折罫と呼ぶ）との間の両面段ボールの自重により、両面段ボールは該第２折罫において逆向きに折れ曲がり、該第２折罫は手前側に来る（図１１(b)に示す状態）。
　このとき、第２折罫とその次の折罫（第３折罫と呼ぶ）の間の部分が重力で受け台２４０に落下する際にリボン鋼２６３に当たり、その反動で押し返される。この押し返しの動作により、両面段ボール６０は第２折罫において逆向きに折れ曲がりやすくなる。 Subsequently, the double-sided cardboard 60 sent to the second transport table 220 freely falls into the receiving portion 230 from the end of the transport table 220 through the ribbon steel 263. At that time, the double-sided cardboard 60 with a fold is bent greatly at the fold. Here, the uppermost surface of the folded double-sided cardboard 60 placed on the cradle 240 is always 0.8L to 1.2L from the end of the second transport table 220 (L is the crease formed on the double-sided cardboard 60) Since the height of the cradle 240 is adjusted to be downward by a distance of
(1) If the previous crease is on the near side, the next crease goes to the back (state of Fig. 11 (a)),
(2) When the previous crease is on the back side, the double-sided cardboard is reversed in the second crease due to the weight of the double-sided cardboard between the next crease (hereinafter referred to as the second crease). It bends in the direction and the second crease comes to the near side (state shown in FIG. 11 (b)).
At this time, when the portion between the second crease and the next crease (referred to as the third crease) falls on the cradle 240 by gravity, it strikes the ribbon steel 263 and is pushed back by its reaction. By this pushing-back operation, the double-sided cardboard 60 is easily bent in the opposite direction at the second crease.
　こうして第２折罫が手前側にきて折り畳まれると、上記(1)の場合に移行し、第２搬送台２２０から送り出された両面段ボール６０はそのまままっすぐ進み、第３折罫は受け台２４０の後ろ側の方に向かう。この場合、第３折罫が第１搬送台２１０と第２搬送台２２０の間で曲がった方向にそのまま折り曲げられ、両面段ボール６０がそこで折り畳まれる。
　以上により、両面段ボール６０は受け台２４０上においてジャバラ状に積み重ねられる。特に、本実施形態では、折罫が２本の近接した押罫からなり、両面段ボール６０の表面側、裏面側のどちらにも同様に折り畳める形状であるため、折り畳み部２００においてジャバラ状に折り畳まれやすい。 When the second crease comes to the front side and is folded in this way, the process proceeds to the case (1), and the double-faced cardboard 60 sent out from the second conveyance table 220 advances straight, and the third crease becomes the cradle 240 Head towards the back of the. In this case, the third crease is folded as it is between the first conveyance table 210 and the second conveyance table 220, and the double-sided cardboard 60 is folded there.
As described above, the double-sided cardboard 60 is stacked in a bellows shape on the cradle 240. In particular, in the present embodiment, the crease is composed of two adjacent creases, and is folded in the same way on both the front side and the back side of the double-sided cardboard 60. Cheap.
　上記実施形態は一例であり、本発明の趣旨の範囲で適宜変更、修正、追加などを行っても本願の請求の範囲に包含されることは明らかである。
　弾性体として上記実施形態ではリボン鋼（板バネ）を用いたが、それに代えてコイルバネを用いることができる。具体的には、第２搬送台の終端から受け台の間に傾斜板を配置し、該傾斜板の上に複数のコイルバネを固定することにより構成することができる。なお、両面段ボール６０が落下してきてコイルバネに当たった際に両面段ボール６０に疵が付かないように、コイルバネの上面には湾曲した板材等を設けておくことが望ましい。 The above-described embodiment is an example, and it is obvious that even if changes, modifications, additions, and the like are appropriately made within the scope of the present invention, they are included in the scope of the claims of the present application.
In the above embodiment, ribbon steel (leaf spring) is used as the elastic body, but a coil spring can be used instead. Specifically, an inclined plate can be arranged between the terminal end of the second transfer table and the receiving table, and a plurality of coil springs can be fixed on the inclined plate. In addition, it is desirable to provide a curved plate or the like on the upper surface of the coil spring so that the double-sided cardboard 60 does not wrinkle when the double-sided cardboard 60 falls and hits the coil spring.
　上記実施形態では第１搬送台の傾斜角を30°にしたが、20～45°の範囲であれば良い。また、第２搬送台の傾斜角は第１搬送台の傾斜角よりも小さければ良く、登りの傾斜角でも良いし、水平であっても良いし、やや下りの傾斜角であっても良い。第２搬送台の傾斜角としては0～30°の範囲が好ましい。 In the above embodiment, the inclination angle of the first carrier is 30 °, but it may be in the range of 20 to 45 °. Moreover, the inclination angle of the 2nd conveyance stand should just be smaller than the inclination angle of a 1st conveyance stand, the inclination angle of an uphill may be sufficient, may be horizontal, and may be a slightly downward inclination angle. The inclination angle of the second carrier is preferably in the range of 0 to 30 °.
　上記実施形態では受け台２４０の下降速度は計算で決定したが、受け台２４０に載置された両面段ボールの最上面の位置を検出するセンサを設け、このセンサの検出結果に基づき、昇降機構が受け台２４０を下降させるようにしても良い。 In the above embodiment, the descending speed of the cradle 240 is determined by calculation. However, a sensor for detecting the position of the uppermost surface of the double-sided cardboard placed on the cradle 240 is provided, and the lifting mechanism is based on the detection result of this sensor. The cradle 240 may be lowered.
　上記実施形態の両面段ボールは、紙を原材料とするもので説明したが、プラスチックシートを用いたプラダンについても、両面段ボールを製造する工程を従来のプラダンを製造する工程で置き換えれば、そのまま適用することができる。 The double-sided corrugated cardboard of the above embodiment has been described using paper as a raw material, but for a pladan using a plastic sheet, if the process for producing a double-sided cardboard is replaced with a process for producing a conventional pladan, it can be applied as it is. Can do.
１２…表ライナー紙ロール
１４…中しん紙ロール
１６…裏ライナー紙ロール
１７…片面段ボール
２０…シングルフェイサ
２１…コルゲータ
２２、３１、３２、３３…ヒータ
３０…ダブルフェイサ
４２…スタッカー
６０…両面段ボール
６１…表ライナー紙
６２…中しん紙
６３…裏ライナー紙
７０…折り畳み装置
１００…折罫付与部
　１１１…上部押圧部材
　１１２…下部押圧部材
　１２１…第１駆動部
　１２２…第２駆動部
　１３０…制御部
　１４１…第１押罫ローラ
　１４２…第２押罫ローラ
１８０…中継搬送部
２００…折り畳み部
　２１０…第１搬送台
　２２０…第２搬送台
　２３０…受け部
　２３２…昇降機構（受け台昇降部）
　２４０…受け台
　２５０…支持台
　２６０…折り曲げアシスト機構
　　２６３…リボン鋼（弾性体）
３００…制御装置 12 ... Front liner paper roll 14 ... Medium liner paper roll 16 ... Back liner paper roll 17 ... Single-sided cardboard 20 ... Single facer 21 ... Corrugator 22, 31, 32, 33 ... Heater 30 ... Double facer 42 ... Stacker 60 ... Both sides Corrugated cardboard 61 ... Front liner paper 62 ... Middle liner paper 63 ... Back liner paper 70 ... Folding device 100 ... Folding crease imparting unit 111 ... Upper pressing member 112 ... Lower pressing member 121 ... First driving unit 122 ... Second driving unit 130 ... Control unit 141... First ruler roller 142. Second ruler roller 180 .. Relay conveyance unit 200 .. Folding unit 210 .. First conveyance table 220 .. Second conveyance table 230 .. Receiving unit 232. )
240 ... cradle 250 ... support pedestal 260 ... bending assist mechanism 263 ... ribbon steel (elastic body)
300 ... Control device

Claims (3)

  1. 　a) 波目に垂直な方向に搬送される長尺両面段ボールに所定の間隔Lで折罫を付与するステップと、
    　b) 前記折罫が付与された長尺両面段ボールを、所定の登りの傾斜角を有する第１搬送台からより小さい傾斜角を有する第２搬送台に送るステップと、
    　c) 折り畳まれた長尺両面段ボールを載置する受け台を、該折り畳まれた長尺両面段ボールの最上面が前記第２搬送台から前記間隔Lの0.8～1.2倍の距離だけ下方となるように調節しつつ下降させるステップと
    　を有することを特徴とする長尺両面段ボールの折り畳み方法。     a) applying a crease at a predetermined interval L to a long double-sided cardboard conveyed in a direction perpendicular to the wave;
    b) sending the long double-sided corrugated cardboard with the creases to a second carrier having a smaller inclination angle from a first carrier having a predetermined climb angle;
    c) The cradle for placing the folded long double-sided cardboard is placed so that the uppermost surface of the folded long-sided cardboard is at a distance of 0.8 to 1.2 times the distance L from the second transport table. And a step of lowering the cardboard while adjusting the length of the corrugated cardboard.
  2. 　a) 長尺両面段ボールを、その波目に垂直な方向に送給する搬送部と、
    　b) 前記長尺両面段ボールに所定の間隔Lで折罫を付与する折罫付与部と、
    　c) 前記折罫付与部の下流に設けられた、所定の登りの傾斜角を有する第１搬送台と、
    　d) 前記第１搬送台の下流に設けられた、該第１搬送台よりも小さい傾斜角を有する第２搬送台と、
    　e) 折り畳まれた長尺両面段ボールを載置する受け台と、
    　f) 前記受け台を、載置された長尺両面段ボールの最上面が前記第２搬送台から前記間隔Lの0.8～1.2倍の距離だけ下方となるように調節しつつ下降させる受け台昇降部と
    　を備えることを特徴とする長尺両面段ボールの折り畳み装置。     a) a transport unit for feeding a long double-sided cardboard in a direction perpendicular to the wave;
    b) a crease imparting section for imparting creases to the long double-sided cardboard at a predetermined interval L;
    c) a first transport stand provided downstream of the crease-applying section and having a predetermined climbing inclination angle;
    d) a second transport table provided downstream of the first transport table and having an inclination angle smaller than that of the first transport table;
    e) a cradle for placing a folded long double-sided cardboard;
    f) A cradle lifting / lowering unit that lowers the cradle while adjusting the uppermost surface of the placed long double-sided cardboard so that the uppermost surface of the long corrugated cardboard is lower than the distance L by 0.8 to 1.2 times the distance L An apparatus for folding a long double-sided cardboard, comprising:
  3. 　更に、
    　g) 前記第２搬送台の後方の手前側下方に設けられた、前記第２搬送台から前記受け台に落下する長尺両面段ボールを弾き返す弾性体
    　を備えることを特徴とする請求項２に記載の長尺両面段ボールの折り畳み装置。     Furthermore,
    3. The elastic body according to claim 2, further comprising: an elastic body that is provided at a lower front side behind the second transport table and repels a long double-sided cardboard falling from the second transport table to the receiving table. Long sided cardboard folding device.
PCT/JP2017/018705 2016-06-01 2017-05-18 Method and device for folding long double-sided cardboard WO2017208845A1 (en)

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