JPH05178530A - Laminating device for adhesive sheet - Google Patents

Abstract

PURPOSE:To ensure the efficient performance of a mechanical process where adhesive sheet pieces cut out from, a roll are sequentially laminated with the prescribed angle of change in direction, and prevent adhesive sheet pieces having a residual separating sheet from being laminated. CONSTITUTION:There are provided a sheet feeding mechanism A for delivering an adhesive agent impregnated or coated adhesive sheet 2 from a roll 1, a separating sheet collecting mechanism B for releasing a separating sheet 3 from the sheet 2, a sheet cutting mechanism C for cutting the sheet 2 free from the separating sheet 3, and a sheet piece transfer mechanism D for carrying cutout sheet pieces 2a one by one onto a pallet 29 waiting at a laminating position. Furthermore, there are provided a sheet piece laminating mechanism E for stacking the adhesive sheet pieces 2a carried with the mechanism D onto the pallet 29 with a change in rotary phase, according to the prescribed sequence, and a residual separating sheet detecting mechanism G for detecting whether a broken residue of the separating sheet 3 remains in the sheet 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-sensitive adhesive sheet (referred to as a prepreg sheet) obtained by impregnating or applying an adhesive on a sheet material formed of carbon fiber, glass fiber, polyimide fiber, etc. The present invention relates to a pressure-sensitive adhesive sheet laminating apparatus used in the step of cutting a plurality of pressure-sensitive adhesive sheet pieces into a rectangular shape and laminating a plurality of the cut pressure-sensitive adhesive sheet pieces, and then subjecting the pieces to hot pressing to form a plate having an appropriate thickness.

[0002]

2. Description of the Related Art The plate formed as described above is extremely lightweight while having high strength. After an appropriate number of the plates are laminated and bonded to form a block, for example, the rotor of a centrifuge is used. It is used after being machined. Since the strength of the laminated PSA sheet pieces in a specific direction decreases when the directions of the fibers are aligned, it is necessary to make the directions of the fibers of the laminated PSA sheets different from each other. Therefore, conventionally, the following steps have been taken. (1) Pull out the pressure-sensitive adhesive sheet with a release sheet from the original roll and peel off the release sheet attached to the pressure-sensitive adhesive sheet. The pressure-sensitive adhesive sheet is preliminarily slit into a length of 50 m and a width of 1 m in consideration of handleability. (2) Pull out the pressure-sensitive adhesive sheet for a predetermined length (for example, 1
It is important to m). (3) Using this template, cut the large-sized adhesive sheet into a required size (for example, 215 mm square, 225 mm square,
Alternatively, a square adhesive sheet piece of 285 mm square is cut out. (4) The pressure-sensitive adhesive sheet pieces are laminated using a jig (mark sheet) with the rotational phases sequentially shifted by a predetermined angle (for example, 15 °).

[0003]

The above-mentioned conventional means have the following problems. (1) Since each small piece of the adhesive sheet is manually aligned with the jig one by one, and then the jig is aligned and laminated, the workability is extremely low and the productivity is not increased. It was a process. (2) Even when a part of the release sheet is left on the adhesive sheet when the release sheet is peeled off from the adhesive sheet, it is often not noticed. If this happens, internal defects will occur in the molded plate.

The present invention has been made in consideration of such circumstances, and is capable of efficiently laminating the pressure-sensitive adhesive sheet pieces while shifting the rotational phase without leaving the release sheet. An object of the present invention is to provide a pressure-sensitive adhesive sheet laminating device.

[0005]

In order to achieve the above object, the present invention has the following constitution. That is, a sheet feeding mechanism that guides a pressure-sensitive adhesive sheet with a release sheet, which is obtained by impregnating or coating an adhesive on a sheet material, from a raw roll and guides it along a predetermined path, and a pressure-sensitive adhesive sheet with a release sheet that is fed out. A release sheet recovery mechanism that peels the mold sheet and guides it along a predetermined path, a sheet cutting mechanism that cuts the pressure-sensitive adhesive sheet from which the release sheet has been peeled to a predetermined size, and a cut adhesive sheet piece of a predetermined size. Adhesion on the pallet by sequentially shifting the rotation phase of the sheet piece transfer mechanism that transfers the sheets one by one onto the pallet waiting at a predetermined stacking position and the adhesive sheet pieces transferred by the sheet piece transfer mechanism by a predetermined angle. A sheet piece stacking mechanism that stacks the sheet pieces on top of each other, and a release sheet remaining detection mechanism that detects whether or not the release sheet is torn and remains on the adhesive sheet from which the release sheet has been peeled off. It is equipped with.

Alternatively, in addition to the above basic structure, a joint detecting mechanism for detecting a joint with the starting end of the adhesive sheet in the new original roll connected to the end of the adhesive sheet in the previous original roll, and a joint are included. It may be configured to include a defective sheet piece removing mechanism that carries out the adhesive sheet piece without feeding it onto the pallet.

Here, the sheet material is an inorganic fiber such as carbon fiber or glass fiber or a polyimide fiber,
It means one in which organic fibers such as polyamide fibers and polyaramid fibers are aligned in one direction, or one in which the fibers are woven in two or more directions.

The release sheet is a sheet for preventing the adhesive sheets from sticking to each other.
It means a paper or film coated or impregnated with a substance such as fluorine, and a polyethylene film is preferable as the film.

The adhesive is preferably a synthetic resin adhesive such as epoxy resin, polyester resin or phenol resin, or a rubber adhesive such as nitrile rubber.

[0010]

According to the above basic structure, the pressure-sensitive adhesive sheet with release sheet fed out from the original roll is separated from the release sheet by the release sheet collecting mechanism while being guided along the predetermined path by the sheet feeding mechanism, The adhesive sheet from which the release sheet has been peeled off is cut into an adhesive sheet piece having a predetermined size by a sheet cutting device. Next, the adhesive sheet pieces are transferred onto the pallet by the sheet piece transfer mechanism, and the adhesive sheet pieces are laminated by the sheet piece laminating mechanism with different rotational phases by a predetermined angle. Also, for adhesive sheets from which the release sheet has been peeled off, the release sheet remaining detection mechanism monitors the release sheet remaining, and if the release sheet is detected, the device automatically stops. By performing the above, it is possible to avoid stacking of the release sheet while it remains.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall side view of the pressure-sensitive adhesive sheet laminating apparatus according to the present invention, FIG. 2 is an overall plan view thereof, and FIG. 3 is a schematic perspective view thereof. This apparatus includes a sheet feeding mechanism A, a release sheet collecting mechanism B, a sheet cutting mechanism C, a sheet piece transfer mechanism D, and a sheet piece stacking mechanism E.
, Pallet unloading mechanism F, release sheet residual detection mechanism G
, A seam detection mechanism H, and a defective sheet piece removing mechanism I. Details of each mechanism will be described below.

[Sheet Supply Mechanism A] (See FIG. 1 and FIG. 4) The original roll 1 is provided at one end of the apparatus. This raw fabric roll 1 is obtained by sticking a release sheet 3 made of a polyethylene film to an adhesive sheet (prepreg sheet) 2 obtained by impregnating a sheet material formed by knitting carbon fibers with an epoxy resin adhesive and rolling the roll. It is wound. Adhesive sheet 2 pulled out from this roll 1
Is guided along a predetermined path through the guide rollers 4a and 4b, a pair of upper and lower feeding rollers 5, a vertically movable dancer roller 6 for applying a constant tension, and a pair of upper and lower feed rollers 7, and in a horizontal posture. The sheet cutting mechanism C is supplied. In addition, the feeding roller 5
Is driven by a motor 8, and the feed roller 7 is driven by a motor 9.

[Release sheet collecting mechanism B] (see FIG. 4) At the guide portion by the guide roller 4a, the release sheet 3 attached to the adhesive sheet 2 is peeled off and guided downward, and the motor 8 It is adapted to be wound up and collected by a collecting roller 10 driven by.

[Sheet Cutting Mechanism C] (See FIG. 4, FIG. 6 and FIG. 7) At the end of the sheet feeding mechanism A, there is a fixed blade 11 located below the sheet feeding path, and a vertical movement relative to this. The movable blade 12 and the sheet pedestal 13 are provided, and the adhesive sheet 2 sent onto the sheet pedestal 13 by the sheet feeding mechanism A is cut into predetermined lengths. The movable blade 12 is attached to a tool rest 17 that is driven by a motor 14 and a crank mechanism 15 and moves linearly up and down along a guide rail 16. Further, the adhesive sheet 2 is lowered above the sheet receiving base 13 prior to the lowering of the movable blade 12 to move the adhesive sheet 2 to the sheet receiving base 13.
A sheet retainer 18 to be pushed up is provided, and the upper surface of the sheet pedestal 13 is coated with a resin having a low adhesive property such as silicon or Teflon, and a suction surface for sucking and fixing the adhesive sheet 2 at the time of cutting. Is configured. It should be noted that an electrostatic removal bar 19 is horizontally installed just before the cutting position, and a dust collecting duct 20 for collecting the cutting waste and sucking and discharging it to the outside of the apparatus is provided immediately below the cutting position.

[Sheet Piece Transfer Mechanism D] (FIGS. 5 and 6)
A pair of front and rear guide rails 21 are horizontally arranged behind the sheet cutting mechanism C, and a carrier 22 engaged and mounted on the guide rails 21 is rotated by a motor 23 in a forward and reverse direction. It is equipped with a shaft 24 so as to be capable of reciprocating left and right with a constant stroke, one stroke end Sa of which is above the sheet receiving base 13, and the other stroke end Sb of which is above the sheet piece stacking portion. ..

Below the center of the carrier 22, a plurality of suction pads 26 are lifted and lowered by an air cylinder 25.
Is provided, and the adhesive sheet piece 2a cut out on the sheet receiving base 13 is sucked and held by the suction pad 26 and transferred to the sheet piece stacking portion. And
When taking out the adhesive sheet piece 2a from the sheet receiving base 13, air is blown from the suction surface of the sheet receiving base 13 to facilitate the peeling of the adhesive sheet piece 2a.

By replacing the original roll 1 with one having a different width and changing the sheet feed length, the adhesive sheet pieces 2a having different dimensions can be laminated. In this case, the carrier 22 is used. In order to support the center of the adhesive sheet piece 2a in the center of the carrier 22 without changing the stroke end position of the sheet holder 13, the sheet holder 13 is moved to a predetermined position (defined by a limit switch) by the air cylinder 27 after cutting the sheet. Then, the center of the adhesive sheet piece 2a sucked and held on the sheet receiving table 13 is made to coincide with the center of the carrier 22 at the stroke end position. Further, the gap between the suction pads 26 is adjusted according to the change in the dimension of the adhesive sheet piece 2a so that the adhesive sheet piece 2a can be properly supported.

[Sheet Piece Transfer Mechanism D] (FIGS. 5 and 6)
The suction pad 26 provided on the carrier 22 is rotatably mounted around the vertical axis X of the carrier center.
The rotation phase can be changed by the motor 28. Then, the phase is changed while the adhesive sheet piece 2a is taken out from the sheet pedestal 13 and is transferred to the sheet piece stacking portion, and the pallet 29 is waiting at the sheet piece stacking portion.
As shown in FIGS. 9 and 10, a predetermined number of adhesive sheet pieces 2a are set at a predetermined angle θ (for example, 15).
The control device (not shown) is configured so that the phase is shifted by one step by step, and the angle of the rotational phase at the time of stacking the adhesive sheet pieces and the stacking order can be set in advance. It has been incorporated. When the adhesive sheet piece 2a is supplied onto the pallet 29, the suction pad 26 separates the adhesive sheet piece 2a by air blow.

[Pallet unloading mechanism F] (FIGS. 8 and 2)
The pallet 29 is stacked and mounted on a detachable rack 30 and loaded in the sheet piece stacking portion, and a pallet 29 is moved up and down by a ball screw type expansion / contraction device 32 driven by a motor 31 to a certain position. A predetermined number of adhesive sheet pieces 2a are sequentially oriented and laminated on the uppermost pallet 29 pushed up. Top pallet 29
When the stacking process of the required number of sheet pieces is completed, the pallet 29 is pushed out from the sheet piece stacking portion onto the roller conveyor 35 by the air cylinder 34 (see FIG. 2), and the carried-out pallet 29 is further transferred to the air cylinder 36.
Is configured to be sent out onto the stock roller conveyor 37. Also, one pallet 29
When the unloading is completed, the movable table 33 is raised by one pitch and the process for the next pallet 29 is started. When all the pallets 29 have been used, a new rack 30 full of pallets 29 is loaded instead of the empty rack 30.

[Release Sheet Remaining Detection Mechanism G] (See FIG. 4) A light source 38 and an image sensor 39 facing the light source 38 are provided on both sides of the release sheet winding path in the release sheet collecting mechanism B. When the opaque or semi-transparent release sheet 3 to be wound and collected has a hole, the hole is detected, the device is automatically stopped, and the alarm device is activated. That is, the fact that a part of the release sheet 3 is broken and left on the adhesive sheet 2 is detected as a hole in the collected release sheet 3. The release sheet residual detection mechanism G is used to directly monitor the release sheet remaining on the adhesive sheet 2 by directly monitoring the adhesive sheet 2 from which the release sheet has been peeled off with a CD camera, a reflection type optical sensor or the like. It can also be implemented as a mode of detecting.

[Seam detecting mechanism H] (see FIG. 4) When the original fabric roll 1 is used up, the end of the adhesive sheet 2 and the starting end of the adhesive sheet 2 in the new original fabric roll 1 are connected using an adhesive tape. This means that the adhesive tape should have good light-reflecting properties, or if it has a different light-reflecting property from the original fabric, for example, if the original fabric is a pressure-sensitive adhesive sheet made of black carbon fiber, it will be white or yellow. If the raw material is an adhesive sheet made of white or colorless glass fiber using an adhesive tape, a black or blue adhesive tape is used, and the reflection type light provided immediately after the feed roller 7 is used. The joint of the adhesive sheet 2 is detected by detecting the adhesive tape with the sensor 40.

[Defective Sheet Piece Exclusion Mechanism I] (See FIG. 6) When a sheet seam is detected by the seam detection mechanism H,
From the relationship between the sheet feed length, the sensor position, and the cutting position, the adhesive sheet piece 2a including the seam is indexed,
The adhesive sheet piece 2a included in this joint is the carrier 22.
When it is transferred, it is discharged and removed to the recovery container 41 at a predetermined position P during the transfer. The adhesive sheet piece 2a to be discharged and removed is removed from the count value of the number of laminated sheets, and the next adhesive sheet piece 2a is correctly oriented and laminated again.

[0023]

As described above, according to the present invention,
No need for troublesome manual work such as aligning the adhesive sheet piece with the jig and positioning the jig, and the work efficiency was significantly improved. In addition, since it is possible to avoid stacking the release sheet with the release sheet remaining, the product yield is increased and it is also effective in cost reduction. In particular, when a defective sheet piece removal mechanism is added, stacking including sheet seams can be automatically prevented, so the time to suspend the device to eliminate sheet seams becomes extremely short, which improves the operating efficiency of the device. It can be increased and the practical effect is enhanced.

[Brief description of drawings]

FIG. 1 is a side view of the entire apparatus.

FIG. 2 is a plan view of the entire device.

FIG. 3 is a schematic perspective view.

FIG. 4 is a side view showing a sheet feeding mechanism, a release sheet collecting mechanism, and a sheet cutting mechanism.

FIG. 5 is a plan view showing a sheet piece transfer mechanism.

FIG. 6 is a side view showing a sheet piece transfer mechanism and a sheet piece stacking mechanism.

FIG. 7 is a front view showing a sheet cutting mechanism.

FIG. 8 is a front view showing a sheet piece stacking mechanism and a pallet unloading mechanism.

FIG. 9 is a perspective view showing a sheet piece stacking step.

FIG. 10 is a plan view showing a laminated state of sheet pieces.

[Explanation of symbols]

 1 ... Original roll 2 ... Adhesive sheet 3 ... Release sheet A ... Sheet supply mechanism B ... Release sheet collection mechanism C ... Sheet cutting mechanism D ... Sheet piece transfer mechanism E ... Sheet piece stacking mechanism G ... Seam detection mechanism I ... Defective sheet piece elimination mechanism

Continuation of front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location B65H 35/04 9037-3F C08J 5/24 7188-4F // B29K 105: 06 (72) Inventor Hiroshi Fujita Shiga 1-11-1 Sonoyama, Otsu, Tochi, Shiga Plant, Toray Co., Ltd. (72) Inventor Sadao Higuchi, 3-13-23, Takakuracho, Miyakojima-ku, Osaka City Higuchi Iron Works Co., Ltd.

Claims (2)

[Claims] 1. A sheet feeding mechanism for feeding an adhesive sheet with a release sheet, which is obtained by impregnating or applying an adhesive agent to a sheet material, and guiding the adhesive sheet along a predetermined path, and an adhesive sheet with the released sheet that is fed out. A release sheet recovery mechanism that removes the release sheet from the sheet and guides it along a predetermined path, a sheet cutting mechanism that cuts the adhesive sheet from which the release sheet has been peeled to a predetermined size, and a cut predetermined size A sheet piece transfer mechanism that transfers the adhesive sheet pieces one by one onto the pallet waiting at a predetermined stacking position, and a pallet that sequentially shifts the rotational phase of the adhesive sheet pieces transferred by the sheet piece transfer mechanism by a predetermined angle. A sheet piece stacking mechanism that stacks the adhesive sheet on top and a release sheet remaining detection that detects whether or not the release sheet is torn and remains on the adhesive sheet from which the release sheet has been peeled off. Laminating apparatus of the adhesive sheet, characterized in that it is equipped with structure, a. 2. A sheet feeding mechanism for feeding a pressure-sensitive adhesive sheet with a release sheet, which is obtained by impregnating or applying an adhesive of a sheet material, and guiding it along a predetermined path, and a pressure-sensitive adhesive sheet with a release sheet fed out. A release sheet recovery mechanism that removes the release sheet from the sheet and guides it along a predetermined path, a sheet cutting mechanism that cuts the adhesive sheet from which the release sheet has been peeled to a predetermined size, and a cut predetermined size A sheet piece transfer mechanism that transfers the adhesive sheet pieces one by one onto the pallet waiting at a predetermined stacking position, and a pallet that sequentially shifts the rotational phase of the adhesive sheet pieces transferred by the sheet piece transfer mechanism by a predetermined angle. A sheet piece stacking mechanism that stacks the adhesive sheet on top and a release sheet remaining detection that detects whether or not the release sheet is torn and remains on the adhesive sheet from which the release sheet has been peeled off. A seam detection mechanism that detects the seam between the structure and the end of the adhesive sheet on the previous roll, and the start of the adhesive tape on the new roll, and the adhesive sheet piece containing the seam is supplied onto the pallet. A device for laminating adhesive sheets, which is equipped with a mechanism for eliminating defective sheet pieces that can be carried out without any action.