JP2020175448A - Back split processing device - Google Patents

Abstract

To provide a back split processing device which splits a back of a second sheet without cutting a first sheet.SOLUTION: A back split processing device 100 of a sheet-like material includes: a feeding part which feeds a sheet material PP containing a first sheet PB containing a first side and a second side crossing the first side and a second sheet PF stuck to the first sheet through an adhesive, to a direction of the first side; a back split processing part 30 having a blade body 310 which splits a back of the sheet-like material fed by the feeding part in the direction of the first side, and a pair of first roller parts 350 and 352 which sandwich the sheet-like material on an upstream side of the blade body; and a second roller part which sandwiches the sheet-like material on a further upstream side of the pair of first roller parts 350 and 352. Warpage of the sheet-like material is eliminated by the first roller part and the second roller part, and the back of the second sheet PF is split and the back of the first sheet PB is not split.SELECTED DRAWING: Figure 1

Description

The present invention relates to a back splitting processing device for obtaining a product in which either the peeling sheet or the surface base material is split on the back of an adhesive sheet that is bonded to the release sheet via an adhesive on the surface base material.

As a method of splitting (or slitting) only the release sheet of the roll-shaped adhesive sheet, the surface base material and the release sheet are continuously fed while being bonded, and the fixed blade or the rotary blade is pressed from the release sheet side. There is a method of splitting the back. In this method, it is difficult to accurately split only the release sheet due to the vertical movement of the surface base material or the release sheet due to the change in the thickness of the adhesive or the runout of the adhesive sheet of the support roll. In addition, it is extremely difficult to split the back to a uniform depth for each blade even when multiple parallel blades are used for back splitting, and when a rotary blade is used, it is accurate even when placed in the production. It is extremely difficult to produce a well-rounded rotary blade, and therefore there is a problem that it is difficult to adjust the spine depth with high accuracy using the rotary blade.

In particular, in a roll-shaped adhesive sheet, since the adhesive sheet is held by tensile force on the feed side and the take-up side, a part of the adhesive sheet does not warp or curl, but 1 of A4 size etc. In the case of adhesive sheets one by one, a part of the adhesive sheet is curled or warped. In this state, if the fixed blade or rotary blade is pressed from the release sheet side for back splitting, the position of the back split from the side of the sheet-like material (Y-axis direction) is not constant, and the release sheet cannot be split. , There is a problem that both the surface base material and the release sheet are cut.

Japanese Unexamined Patent Publication No. 9-117894

Therefore, there is provided a spine splitting apparatus capable of forming a spine crack in the second sheet without cutting the first sheet even if it is a sheet-like material one by one.

The back splitting apparatus for the sheet-like material of the present embodiment includes a first sheet including a first side and a second side in a direction intersecting the first side, and a second sheet bonded to the first sheet via an adhesive. A feed portion that feeds the sheet material including the sheet in the direction of the first side, a blade that splits the sheet-like material fed by the feed portion in the direction of the first side, and a sheet-like material on the upstream side of the blade. It is provided with a back split processing portion having a pair of first roller portions to be sandwiched, and a second roller portion for sandwiching a sheet-like material on the upstream side of the pair of first roller portions. Then, the warp of the sheet-like material is eliminated at the first roller portion and the second roller portion, the second sheet is split on the back, and the first sheet is not split on the back.

Further, in the present embodiment, the back split processed portion has a first leaf spring material that is arranged in the direction of the second side of the blade and presses the sheet-like material with an elastic force. It is preferable that the back splitting apparatus for the sheet-like material further includes a second leaf spring material that is arranged on the upstream side of the blade and presses the sheet-like material with an elastic force.

The second leaf spring material includes an upstream side second leaf spring material and a downstream side second leaf spring material arranged apart from each other in the direction of the first side, and the upstream side second leaf spring material and the downstream side second leaf spring material. It is preferable that the two leaf spring materials are formed at different angles when viewed from the side surface direction. Further, the back split processing portion preferably has a height adjusting portion for adjusting the height of the blade in the normal direction intersecting the first side and the second side.

The back split processing portion has a blade shaft extending in the direction of the second side, a width position adjusting portion that is movable along the blade shaft and adjusts the position in the direction of the second side of the blade, and a width. It is preferable to have a deterrent mechanism for deterring the position adjusting unit from moving in the normal direction. The blade may include a rotary blade that splits the back while rotating the sheet-like material.

The back splitting apparatus for the sheet-shaped material of the present embodiment is arranged upstream of the feeding section, takes out one sheet at a time from a state in which a plurality of sheet-shaped materials are stacked, and feeds one sheet-shaped material to the feeding section. It is preferable to include a paper portion and an accumulating portion for accumulating a plurality of sheet-like materials after the release sheet has been split back.

It is a perspective conceptual view of the back split processing apparatus of the sheet-like material which is this embodiment. (A) is a plan view of the back splitting apparatus shown in FIG. (B) is a side view of the back split processing apparatus. (A) is a plan view of the back split processed portion, and (B) is a perspective side view of the back split processed portion. (A) is a conceptual plan view showing the area where a plurality of leaf spring materials and the second roller portion hold the sheet-shaped material PP. (B) is an enlarged side view of the leaf spring material and the second roller portion.

Hereinafter, the present embodiment in which the back split processing is performed on the sheet-like material PP will be described with reference to the drawings. In FIGS. 1 to 4, the direction from upstream to downstream is defined as the X-axis, and the direction orthogonal to the X-axis is defined as the Y-axis direction. That is, the sheet-like material PP has a first side extending in the X-axis direction and a second side extending in the Y-axis direction. Further, the normal direction of the sheet-like material PP is the Z-axis direction.

<Structure of back split processing device 100>
FIG. 1 is a conceptual perspective view of a back splitting apparatus 100 for a sheet-shaped material PP according to the present embodiment. Arrows are shown in the direction from upstream to downstream. The back splitting apparatus 100 is an apparatus for back splitting a plurality of sheet-like material PPs. As shown in FIG. 1, the back splitting apparatus 100 is roughly classified into four parts. The back splitting apparatus 100 includes a paper feed unit 10 for feeding sheet-shaped material PP one by one from a plurality of stacked sheet-shaped material PP, an alignment table 20 for aligning one sheet-shaped material PP, and back splitting. A processing portion 30 and an accumulation portion 40 in which one sheet-shaped material PP is superposed and accumulated in a predetermined number of bundles of sheet-shaped material PP are provided.

The sheet-like material PP is composed of a surface base material PB and a release sheet PF, as shown in the sheet-like material PP extracted from the paper feed unit 10. Examples of the surface base material PB and the release sheet PF include a film made of polyester such as polyethylene terephthalate and polyethylene naphthalate, polyolefin such as polypropylene and polymethylpentene, and plastic such as polycarbonate and polyvinyl acetate, and are single-layered. It may be a multilayer of two or more layers of the same type or different types. In addition to the above films, the surface base material PB includes paper such as glassin paper, clay coated paper, resin coated paper, laminated paper (polyethylene laminated paper, polypropylene laminated paper, etc.), non-woven fabric, metal foil, and the like. Can also be used.

The lengths of the first side and the second side of one sheet-like material PP are various, for example, from the size of a postcard to the size of A1. The thickness of the surface base material PB and the release sheet PF may be 10 μm to 400 μm, preferably 50 μm to 200 μm. The sheet-like material PP is used for various purposes such as adhesive plasters, compress sheets, plaster sheet, heat-cooled sheet or printing sheet. A release agent layer made of a release agent composition is formed between the surface base material PB and the release sheet PF. As the release agent composition in the present embodiment, an addition reaction type silicone resin or the like is used. The release agent layer is several μm to several tens of μm.

The back split processing portion 30 will be described in detail with reference to FIG. 3, but the member shown in FIG. 1 will be briefly described. The back split processing portion 30 is drawn with three rotary blades 310 for splitting the release sheet PF, but for example, ten rotary blades 310 may be provided. As can be understood from the sheet-like material PP of the integrating portion 40, the rotary blade 310 splits the release sheet PF on its back and does not split the surface base material PB on its back. A support roller 330 is arranged on the lower side (−Z axis side) of the rotary blade 310. The support roller 330 transfers the sheet-like material PP from upstream to downstream, and sets the reference height of the lower surface of the sheet-like material PP, that is, the lower surface of the surface base material PB, so that only the release sheet PF is split. ing.

In FIG. 1, the back split processing portion 30 has a pair of first roller portions 350 and 352 upstream of the rotary blade body 310. The first roller portions 350 and 352 transfer the sheet-like material PP from the upstream to the downstream, and suppress the warp of the sheet-like material PP. Further, the back split processing portion 30 has a third roller portion 370 downstream of the rotary blade body 310 in FIG. As shown in FIG. 2 or 3, the third roller portion is a pair of 370 and 372, and the third roller portion 370 and 372 also transfers the sheet-like material PP from the upstream to the downstream and the sheet-like material PP. Suppresses the warp that occurs. The first roller portions 350, 352 and the third roller portions 370, 372 are rollers extending in the width (Y-axis direction) of the back split processing portion 30.

FIG. 2A is a plan view of the back splitting apparatus 100 shown in FIG. FIG. 2B is a side view of the back splitting apparatus 100. The paper feed unit 10, the alignment table 20, the back split processing unit 30, and the integration unit 40 each have their main configurations drawn, and the side view of FIG. 2 (B) is for a member that is not normally visible as covers. However, it is drawn transparently to help understanding.

As shown in FIG. 2B, the paper feed unit 10 is installed in the elevator 12 as a bundle of several hundred sheets, for example, by stacking sheet-like material PPs one by one. Further, the elevator 12 has an alignment width adjusting portion 14 in the direction of the second side (Y-axis direction) of the sheet-shaped material PP. The width adjusting unit 14 can be moved to manually or automatically align the direction of the second side of the sheet-shaped material PP so that the position can be adjusted according to the width dimension of the different types of sheet-shaped material PP. It has become. The elevator 12 raises the sheet-like material PP whose width dimension has been adjusted to the height of the feed roller.

As shown in FIG. 2 (B), the feed roller 16 of the paper feed unit 10 is rotationally driven by a motor (not shown), and is fed between the feed roller 16 and the driven roller provided so as to be rotatable. The sheet-like material PP can be accurately transferred. Further, an auxiliary roller or the like may be installed in addition to the feed roller 16 and the driven roller. As the motor (not shown), for example, a stepping motor is used, and the motor is pulse-driven by the rotation angle of the roller according to the feed amount of the sheet-shaped material PP. The feed roller 16 of the paper feeding unit 10 feeds the sheet-shaped material PP one by one to the alignment table 20.

The alignment table 20 is a feeding unit for feeding the sheet-shaped material PP, and has a table 21 serving as a transfer path for the sheet-shaped material PP. A side reference guide 22 as a positioning member for the first side of the sheet-shaped material PP is provided on the −Y axis side (lower side of FIG. 2A) of the table 21. The side reference guide 22 has a guide surface 23 facing the first side of the sheet-shaped material PP. The guide surface 23 is arranged so as to be parallel to the transfer direction (+ X-axis direction) of the sheet-like material PP. The first side of the sheet-like material PP fed from the paper feeding unit 10 is fed from the guide surface 23 to the + Y-axis side at a distance of several mm to several tens of mm.

As shown in FIG. 2B, a transfer belt BT is arranged on the lower side (−Z axis direction) of the table 21 from the upstream side to the downstream side. The transfer belt BT is an upstream belt roller 24 and an upstream belt roller 25, and is configured to rotate by a motor power (not shown).

The alignment table 20 has a width adjusting portion 26 on the transfer belt BT. As shown in FIG. 2A, the width adjusting portion 26 is arranged diagonally from the upstream side to the downstream side, and the tip of the width adjusting portion 26 on the downstream side is on the guide surface 23 of the side reference guide 22. Arranged in close proximity or in contact. The width adjusting portion 26 is provided with, for example, one row or a plurality of rows (two rows in FIG. 2A) in the Y-axis direction, and a plurality of transfer balls 27 are provided at predetermined intervals from the upstream side to the downstream side thereof. These transfer balls 27 are composed of spheres such as glass balls, plastic balls, and rubber balls having a predetermined weight. The transfer ball 27 is supported in a state where it can freely rotate in an arbitrary direction by using a ball receiving member (not shown). Further, in a state of being supported by the ball receiving member, the center of the transfer ball 27 is always held at a fixed position. These transfer balls 27 apply transfer forces in the + X-axis direction and the −Y-axis direction to the sheet-like material PP on the transfer path of the sheet-like material PP. That is, the first side of the sheet-like material PP fed from the guide surface 23 to the + Y-axis side at a distance of several mm to several tens of mm upstream of the alignment table 20 comes into contact with the guide surface 23 downstream of the alignment table 20. Is aligned. Then, the aligned sheet-like material PP is transferred to the back split processing section 30.

In the back split processing portion 30, only the release sheet PF of the sheet-like material PP is split. The back-split sheet-like material PP is transferred to the accumulation unit 40. The reference numerals of the back split processing portion 30 drawn in FIG. 2 will be described with reference to FIG.

In the accumulating portion 40, the sheet-shaped material PPs split on the back are stacked one by one and accumulated in the elevator 42 as a bundle of several hundred sheets, for example. Further, the elevator 42 has an alignment width adjusting portion 44 in the direction of the second side (Y-axis direction) of the sheet-shaped material PP. The width adjusting unit 14 can be moved to manually or automatically align the direction of the second side of the sheet-shaped material PP so that the position can be adjusted according to the width dimension of the different types of sheet-shaped material PP. It has become. Further, although not shown, the accumulating unit 40 may have a sticky note function for attaching sticky notes for each set predetermined number of sheets. The elevator 42 descends each time the back-split sheet-like material PP is accumulated.

<Structure of back split processing section 30>
FIG. 3A is a plan view of a part of the back split processing portion 30 and the alignment table 20, and FIG. 3B is a perspective side view of a part of the back split processing portion 30 and the alignment table 20. The width in the Y-axis direction indicated by the alternate long and short dash line is the width dimension of the maximum sheet-like material PP.

First, the structure that supports the rotary blade 310 will be described. As shown in FIG. 3B, the rotary blade 310 is supported so as to be rotatable by a blade support portion 319 extending in the Z-axis direction. The blade support portion 319 has a height adjusting portion 318 for adjusting the height of the rotary blade 310 on the upper side (normal direction of the sheet-shaped material PP: Z-axis direction). The height of the height adjusting unit 318 can be adjusted by changing the rotation angle of the screw to the displacement in the Z-axis direction by using a precise screw mechanism, and can be adjusted in units of 5 μm or 10 μm on a scale in the present embodiment. .. The height adjusting portion 318 is supported by the width position adjusting portion 314. For example, when the rotary blade 310 is not used for the sheet-like material PP having a thickness of 100 μm, the height adjusting portion 318 can be adjusted to the upper side (+ Z axis side) by, for example, to make the rotary blade 310 a sheet. It does not come into contact with the material PP.

The back split processing portion 30 has a blade shaft 313 that extends in the Y-axis direction and is attached to the skeleton 315. The width position adjusting unit 314 can move in the Y-axis direction along the blade shaft 313, and can adjust the position of the rotary blade 310 in the Y-axis direction. As shown in FIGS. 3A and 3B, the back split processing portion 30 is provided with two blade shafts 313 on the pair of skeletons 315, and three on each blade shaft 313. The width position adjusting portion 314 is attached. That is, six rotary blades 310 are prepared for the back split processing portion 30. The number of blade shafts 313 may be one, and the number of width position adjusting portions 314 attached to one blade shaft 313 is not limited to three, and may be one or seven.

Further, a beam member 312 extending in the Y-axis direction is arranged on the skeleton 315. The beam member 312 is provided with the same number of tightening bolts 316 that can move in the Y-axis direction as the width position adjusting portion 314. The tightening bolt 316, which is a restraining mechanism, tightens the width position adjusting portion 314 from the + Z axis direction to the −Z axis direction, and suppresses the width position adjusting portion 314 from being displaced in the + Z axis direction. When a thick sheet-like material PP enters the rotary blade 310 from the upstream, or when the release sheet PF cannot be easily cut by the rotary blade 310, a large pressure is applied to the rotary blade 310 in the + Z axis direction. Sometimes. In such a case, the width position adjusting portion 314 may be displaced in the + Z axis direction, and part or all of the release sheet PF may not be cut. Therefore, a deterrent mechanism for suppressing the displacement of the width position adjusting unit 314 in the + Z axis direction is prepared.

As shown in FIG. 3B, the back split processing portion 30 has a pair of first roller portions 350 and 352 on the upstream side of the rotary blade body 310. Further, the back split processing portion 30 has a pair of third roller portions 370 and 372 on the downstream side of the rotary blade body 310. The sheet-like material PP is transferred, and the warp of the sheet-like material PP is suppressed.

As shown in FIG. 3B, a roller 340 that sandwiches the sheet-shaped material PP on the upstream side of the first roller portions 350 and 352, and a second roller portion that faces the roller 340 and can move in the Y-axis direction. 342 and are arranged. As shown in FIG. 3A, three second roller portions 342 are arranged in this embodiment. The second roller portion 342 is supported by the roller support portion 344, and the roller support portion 344 can move along the roller shaft 346 in the Y-axis direction. The roller 340 and the second roller portion 342 transfer the sheet-shaped material PP and hold down the region of the sheet-shaped material PP where warpage is likely to occur.

<Composition of leaf spring material>
When inserting the spine into the adhesive sheet of roll-shaped material consisting of the surface substrate and the release sheet, since both the paper feeding side and the winding side are roll-shaped, the roll-shaped material is between the paper feeding side and the winding side. Is being pulled. Therefore, the roll-shaped material in contact with the blade does not warp or curl. Therefore, if the thickness of the release sheet (Z-axis direction) is 50 μm, if the height of the blade (Z-axis direction) is adjusted to 50 μm + α (within the thickness of the release agent layer), the back is split only on the release sheet. Is easy to put in. However, since each sheet-like material PP is not pulled, a part of the sheet-like material PP may be curled or warped. For example, if the height of the warp (Z-axis direction) is, for example, 100 μm, the release sheet PF and the surface base material PB will be cut.

On the other hand, in the sheet-shaped material PP that is transferred one by one as in the present embodiment, even if the warp and roundness of the sheet-shaped material PP are suppressed by a plurality of rollers as described above, the warp and roundness of several tens of μm occur. Will end up. Therefore, in the present embodiment, a tensile force is applied by the transfer rotor and the leaf spring members 32, 35, 36 to prevent the sheet-shaped material PP from warping. That is, the rotating roller cannot apply a tensile force to the sheet-shaped material PP in the X-axis direction, but the leaf spring can apply a tensile force to the sheet-shaped material PP to suppress warpage and roundness. When the warp and roundness are eliminated, the distance (Y-axis direction) from the first side of the sheet-like material PP is also constant, and a back crack can be formed at a predetermined position of the release sheet PF. As the material of the leaf spring described later, ribbon steel, bainite steel, stainless steel and the like can be used, and the material is not particularly limited.

The back split processing portion 30 is arranged in the ± Y-axis direction of the rotary blade body 310, and has a first leaf spring material 32 that presses the sheet-like material PP by an elastic force. In the first leaf spring material 32, the third roller portion applies an elastic force to the sheet-like material PP that is transferred downstream at 370,372 from the upstream, thereby giving a tensile force to the sheet-like material PP, and the sheet-like material PP. Suppresses warpage and roundness. The first leaf spring member 32 is supported by the first leaf spring support portion 348, and is movably fixed to the beam member 326 (see FIG. 4) arranged on the skeleton 315 and extending in the Y-axis direction. As shown in FIG. 3A, four first leaf spring members 32 are arranged in this embodiment. Then, when the first leaf spring member 32 moves to an appropriate position in the Y-axis direction, the first leaf spring support portion 348 is fixed to the beam member 326 with a fastening portion 329 such as a screw. Further, depending on the length of the sheet-shaped material PP in the X-axis direction or the Y-axis direction, it is not always necessary to use all four first leaf spring materials 32. Therefore, the first leaf spring support portion 348 has a height adjusting mechanism (not shown), and the height adjusting mechanism moves the first leaf spring material 32 in, for example, 2 mm + Z axis direction, and the first leaf spring material The 32 can be left unused.

The alignment table 20 is arranged upstream of the rotary blade 310 and has a second leaf spring material 35 and a second leaf spring material 36 that press the sheet-shaped material PP by an elastic force. For the sake of explanation, the second leaf spring material 35 is referred to as the downstream side second leaf spring material 35, and the second leaf spring material 36 is referred to as the upstream side second leaf spring material 36. In the present embodiment, the alignment table 20 has the downstream side second leaf spring material 35 and the upstream side second leaf spring material 36, but the back split processing portion 30 has the downstream side second leaf spring material 35 and the upstream side second leaf spring material 35. It may have 2 leaf spring material 36.

In the downstream side second leaf spring material 35 and the upstream side second leaf spring material 36, the first roller portion gives an elastic force from the upstream to the sheet-like material PP transferred downstream by the first roller portion 350, 352 and the second roller portion 342. As a result, a tensile force is applied to the sheet-shaped material PP, and warpage and roundness of the sheet-shaped material PP are suppressed. The downstream side second leaf spring material 35 is supported by the downstream side second leaf spring support portion 358, and the downstream side second leaf spring support portion 358 is movably fixed to a shaft 356 extending in the Y-axis direction. .. As shown in FIG. 3A, two downstream side second leaf spring members 35 are arranged in this embodiment, but the downstream side second leaf spring support portion 358 is removable with respect to the shaft 356. There may be one or three or more depending on the length of the sheet-like material PP in the X-axis direction or the Y-axis direction. The upstream side second leaf spring material 36 is supported by the upstream side second leaf spring support portion 368, and the upstream side second leaf spring support portion 368 is movably fixed to a shaft 366 extending in the Y-axis direction. .. As shown in FIG. 3A, two upstream side second leaf spring members 36 are arranged in this embodiment, but the upstream side second leaf spring support portion 368 is detachable with respect to the shaft 366. Yes, it may be one or three or more.

Further, the configuration of the leaf spring material will be described with reference to FIG. FIG. 4A is a conceptual plan view showing the areas where the leaf spring materials 32, 35, 36 and the second roller portion 342 hold the sheet-shaped material PP. The rotary blade 310 of FIG. 4A shows the diameter of the blade, not the cutting area. FIG. 4B is a side view of the leaf spring materials 32, 35, 36 and the second roller portion 342. In FIGS. 4A and 4B, the sheet-like material PP is, for example, A4 size and is drawn by a chain double-dashed line.

First, the leaf spring materials 32, 35, and 36 shown in FIG. 4B will be described. The first leaf spring material 32 has a vertical portion 321 extending in the normal direction of the sheet-like material PP, a bent portion 322 bent from the vertical portion 321 to 40 to 50 degrees, and a sheet-shaped portion bent from the bent portion 322. It is composed of a contact surface portion 323 in which the material PP is in contact. The first leaf spring material 32 may be composed of a vertical portion 321 and a contact surface portion 323, but when the thick sheet-like material PP flows from the upstream to the downstream, it does not collide with the vertical portion 321. Is provided with a bent portion 322. In FIG. 4B, the bent portion 322 is linear, but may have a rounded curved shape. The vertical portion 321 has an angle R1 with respect to the sheet-like material PP of 90 degrees. The contact surface portion 323 preferably overlaps with the cutting position of the rotary blade 310 in the X-axis direction. The width (Y-axis direction) of the first leaf spring material 32 is about 10 mm to 70 mm, and the length of the contact surface portion 323 (X-axis direction) is about 20 mm to 80 mm.

The downstream second leaf spring material 35 is composed of a slope portion 351 extending in the direction of the angle R2 with respect to the sheet-like material PP, and a contact surface portion 353 bent from the slope portion 351 and in contact with the sheet-like material PP. The angle R2 is, for example, 40 to 70 degrees. The width (Y-axis direction) of the second leaf spring member 35 on the downstream side is about 10 mm to 70 mm, and the length of the contact surface portion 353 (X-axis direction) is about 20 mm to 80 mm.

The upstream side second leaf spring material 36 includes a slope portion 361 extending in the direction of the angle R3 with respect to the sheet-like material PP, and a contact surface portion 363 bent from the slope portion 361 and in contact with the sheet-like material PP. The angle R3 is, for example, 20 to 40 degrees. The width (Y-axis direction) of the upstream second leaf spring member 36 is about 10 mm to 70 mm, and the length of the contact surface portion 353 (X-axis direction) is about 20 mm to 80 mm. Comparing the contact surface portion 353 of the downstream side second leaf spring material 35 and the contact surface portion 363 of the upstream side second leaf spring material 36, the larger the area of the contact surface portion 363 of the upstream side second leaf spring material 36, the larger the area. preferable. This is because the angle R3 of the slope portion 361 is smaller than the angle R2 of the slope portion 351 so that a frictional force can be easily applied to the sheet-like material PP transferred from the upstream to the downstream.

Further, as shown in FIG. 4A, the contact surface portion 323 of the first leaf spring material 32, the contact surface portion 353 of the downstream side second leaf spring material 35, and the contact surface portion 363 of the upstream side second leaf spring material 36. It is preferable that they do not overlap each other in the Y-axis direction. In particular, it is preferable that the contact surface portion 353 of the downstream side second leaf spring material 35 and the contact surface portion 363 of the upstream side second leaf spring material 36 do not completely overlap in the Y-axis direction. This is because if they completely overlap in the Y-axis direction, the tensile force does not work due to the upstream second leaf spring member 36.

In FIG. 4A, the contact surface position of the second roller portion 342 is the contact surface portion 323 of the first leaf spring material 32, the contact surface portion 353 of the downstream side second leaf spring material 35, or the upstream side second leaf spring material. It does not overlap the contact surface portion 363 of 36 in the Y-axis direction. However, the contact surface position of the second roller portion 342 may overlap with these leaf spring materials.

<Operation of back split processing device 100>
Next, the operation of the present embodiment will be described again with reference to FIGS. 1 and 2. When the back splitting device 100 of the sheet-shaped material PP is used to make a back crack in the release sheet PF, the bundled sheet-shaped material PP is set in the molar portion 10. The feed roller 16 is rotationally driven at a transfer speed set by a control unit (not shown), and the sheet-like material PP is transferred in the direction of the arrow while being assisted by an auxiliary roller or the like, and moves onto the alignment table 20. Then, the first surface of the sheet-like material PP is aligned on the alignment table 20. Then, the sheet-shaped material PP enters the rotary blade 310 of the back-splitting portion 30 in a state of being pulled by the leaf spring material, and the sheet-shaped material PP is subjected to a predetermined back-splitting process. The sheet-shaped material PP is back-split by the rotary blade 310 and then accumulated in the accumulating portion 40.

The embodiments described above have been described for facilitating the understanding of the present invention, and have not been described for limiting the present invention. Therefore, each member disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention. For example, in the present embodiment, the surface base material PB is not split back and the release sheet is split back, but the surface base material PB may be split back and the release sheet may not be split back.

10 ... Paper feed unit 12 ... Elevator 14 ... Width adjustment unit 16 ... Feed roller 20 ... Alignment table 21 ... Table 22, 42 ... Side reference guide 23 ... Guide surface 24, 25 ... Upstream belt roller 26 ... Width aligning part 27 ... Transfer Ball 30 ... Back split processing part 32, 35, 36 ... Leaf spring material 40 ... Integrated part 100 ... Back split processing device 310 ... Rotating blade 312 ... Beam material 313 ... Blade shaft 314 ... Width position adjustment part 315 ... Frame 316 ... Tightening bolt 321 ... Vertical part 322 ... Bending part 323, 353, 363 ... Contact surface part 330 ... Support roller 340 ... Roller 342 ... Second roller part 344 ... Roller support part 346 ... Roller shaft 350, 352 ... First roller part 351 , 361 ... Slope part 356, 366 ... Shaft 358, 368 ... Second leaf spring support part 370, 372 ... Third roller part PB ... Surface base material PF ... Peeling sheet PP ... Sheet-like material

Claims (8)

A sheet material containing a first side and a second sheet in a direction intersecting the first side and a second sheet bonded to the first sheet via an adhesive is provided on the first side. The feed section that feeds in the direction and
Back split processing having a blade body for back splitting the sheet-shaped material fed by the feed portion in the direction of the first side, and a pair of first roller portions for sandwiching the sheet-shaped material on the upstream side of the blade body. Department and
A second roller portion for sandwiching the sheet-like material is provided on the upstream side of the pair of first roller portions.
A back-splitting apparatus for a sheet-like material, which eliminates the warp of the sheet-like material at the first roller portion and the second roller portion, splits the second sheet on the back, and does not split the first sheet on the back. The back splitting apparatus according to claim 1, wherein the back splitting portion is arranged in the direction of the second side of the blade body and has a first leaf spring material that presses the sheet-shaped material by an elastic force. .. The back splitting apparatus for a sheet-like material according to claim 1 or 2, further comprising a second leaf spring material that is arranged on the upstream side of the blade and presses the sheet-like material with an elastic force. The second leaf spring material includes an upstream side second leaf spring material and a downstream side second leaf spring material arranged apart from each other in the direction of the first side, and the upstream side second leaf spring material and the said. The back split processing device for a sheet-like material according to claim 3, wherein the second leaf spring material on the downstream side is formed at a different angle when viewed from the side surface direction. The back split processing part
The sheet according to any one of claims 1 to 4, which has a height adjusting portion for adjusting the height of the blade in the normal direction intersecting the first side and the second side. Back split processing equipment for shaped materials. The back split processing part
The blade shaft extending in the direction of the second side and
A width position adjusting unit that is movable along the blade shaft and adjusts the position of the blade in the direction of the second side, and
A deterrent mechanism that prevents the width position adjusting unit from moving in the normal direction,
The back splitting apparatus for a sheet-like material according to claim 5. The back-splitting apparatus for a sheet-like material according to any one of claims 1 to 6, wherein the blade includes a rotary blade that splits the back while rotating the sheet-like material. A paper feeding section that is arranged upstream of the feeding section, takes out one sheet at a time from a state in which a plurality of the sheet-shaped materials are stacked, and feeds one sheet-shaped material to the feeding section.
The back splitting apparatus for a sheet-shaped material according to any one of claims 1 to 7, further comprising an accumulating portion for accumulating a plurality of the sheet-shaped materials after the release sheet has been back-split.