JP7407552B2 - Sheet folding device and sheet folding method - Google Patents

Description

The present invention relates to a sheet folding device and a sheet folding method.

BACKGROUND ART Devices for folding and discarding adhesive sheets are conventionally known (for example, see Patent Document 1).

JP2017-107945A

In the sheet peeling device 10 (sheet folding device) described in Patent Document 1, although the adhesive sheet AS (adhesive sheet) is folded and disposed of in the collection box 50 (disposal position), the bent portion of the adhesive sheet remains in its original shape. When the user tries to return to the original position, the bent position collapses, and the adhesive sheet becomes bulky, causing the disadvantage that the disposal area quickly becomes full of adhesive sheets.

An object of the present invention is to provide a sheet folding device and a sheet folding method that can prevent the bent portion of a folded adhesive sheet from collapsing in its bent position as it attempts to return to its original shape.

The present invention employs the configuration described in the claims.

According to the present invention, since the bent position of the bent portion of the adhesive sheet is maintained by the fixing member, it is possible to prevent the bent portion of the folded adhesive sheet from attempting to return to its original shape and collapsing its bent position.

FIG. 1 is an explanatory diagram of a sheet folding device according to an embodiment of the present invention. FIG. 3 is an explanatory diagram of the operation of the sheet folding device. FIG. 3 is an explanatory diagram of the operation of the sheet folding device.

Hereinafter, one embodiment of the present invention will be described based on the drawings.
Note that the X-axis, Y-axis, and Z-axis in this embodiment are orthogonal to each other, and the X-axis and Y-axis are axes within a predetermined plane, and the Z-axis is an axis perpendicular to the predetermined plane. do. Furthermore, in this embodiment, when directions are shown based on the view from the front side of FIG. ``Left'' is the direction of the arrow on the X axis, ``Right'' is the opposite direction, ``Front'' is the front direction in FIG. 1 parallel to the Y axis, and ``Rear'' is the opposite direction.

The sheet folding device EA includes a folding means 10 that forms a bent portion AS2 (see FIG. 3(A)) in the adhesive sheet AS, and folds the adhesive sheet AS by folding one side AS1 of the adhesive sheet AS over each other. and a bent posture maintaining means 20 that adds a peeling tape PT as a fixing member to the folded adhesive sheet AS and maintains the bent posture of the bent portion AS2 with the peeling tape PT, The adhesive sheet AS is disposed above the adherend support means 30 that supports the adhesive sheet AS, and the sheet disposal means 40 that discards the folded adhesive sheet AS. Note that the bent portion AS2 is a portion where the adhesive sheet AS is bent, which is formed when the adhesive sheet AS is folded.

The folding means 10 includes a contact roller 12 rotatably supported by a slider 11A of a linear motor 11 as a driving device, a support frame 14 supported by a slider 13A of a linear motor 13 as a driving device, and a support frame. 14 as a driving device; an upper chuck member 16 as a pressing member supported on the output shaft 15A of the direct-acting motor 15; and an upper chuck member 16 as a pressing member supported on the lower part of the support frame 14. and a lower chuck member 17, and is configured to fold the adhesive sheet AS by shifting one outer peripheral part AS3 of the adhesive sheet AS to the other outer peripheral part AS4.

The bent posture maintaining means 20 includes a feeding means 21 for feeding out a heat-sensitive adhesive peeling tape PT, a pressing means 22 for pressing and sticking the peeling tape PT on the adhesive sheet AS, and a cutting means for cutting the peeling tape PT. 23 and a guide means 24 for guiding the adhesive sheet AS to which the release tape PT is attached, one surface AS1 of the adhesive sheet AS exposed by being shifted and folded by the folding means 10, and the adhesive sheet A peeling tape PT is attached to the other surface AS5 of AS.
In the case of this embodiment, the bent posture maintaining means 20 attaches a peeling tape PT to the adhesive sheet AS attached to the adherend WK, and removes the adhesive sheet from the adherend WK via the peeling tape PT. The structure is such that the AS is peeled off and the bending position of the bent portion AS2 is maintained by the peeling tape PT.

The feeding means 21 is supported by a rotating arm 21B that is rotatable around a rotating shaft 21A, and supported by a support roller 21C that supports the peeling tape PT and an output shaft (not shown) of a rotating motor 21D as a driving device. A drive roller 21E, a spring 21F as a biasing means for biasing the rotary arm 21B in the direction of the drive roller 21E, a housing means 21J supported by an output shaft 21H of a direct drive motor 21G as a driving device, and a housing means 21J. A suction means 21M such as a decompression pump or a vacuum ejector that suctions the peeling tape PT through a suction hole 21L formed in the suction surface 21K, which is the bottom surface of the storage means 21J, and a direct drive device as a driving device. It includes an auxiliary roller 21Q that is supported by the output shaft 21P of the motor 21N and brings the peeling tape PT into contact with the suction surface 21K.
The pressing means 22 includes a linear motor 22A as a driving device housed in the housing means 21J, a pressing head 22C supported by a slider 22B of the linear motor 22A, and provided so as to be able to protrude and retract from the bottom surface of the housing means 21J. The pressing head 22C includes heating means 22D such as a coil heater or a heating side of a heat pipe.
The cutting means 23 includes a linear motor 23A as a driving device housed in the housing means 21J, and a cutting blade 23C supported by a slider 23B of the linear motor 23A and provided so as to be protrusive and retractable from the bottom surface of the housing means 21J. We are prepared.
The guide means 24 includes a linear motor 24A as a driving device, a rotating motor 24C as a driving device supported by a slider 24B of the linear motor 24A, and a pressing roller supported by an output shaft (not shown) of the rotating motor 24C. 24D, a support member 24G supported by the output shaft 24F of a direct-acting motor 24E as a driving device, a pinch roller 24H rotatably supported by the support member 24G, and a cut roller 24H supported by the support member 24G and cut on the upper surface thereof. The sheet support member 24K is provided with a groove 24J for receiving the blade 23C.

The adherend support means 30 is a table that is supported by a linear motor 31 as a driving device and a slider 31A of the linear motor 31, and has a support surface 32A that can be held by suction by a decompression means (not shown) such as a decompression pump or a vacuum ejector. It is equipped with 32.

The sheet disposal means 40 includes a collection box 41 for collecting the adhesive sheet AS peeled off from the adherend WK.

The operation of the above sheet folding device EA will be explained.
First, a user (hereinafter simply referred to as "user") of the sheet folding apparatus EA (hereinafter simply referred to as "user") sets the sheet folding apparatus EA in which each member is placed at the initial position shown by the solid line in FIG. After setting the peeling tape PT, a signal to start automatic operation is inputted via an input means such as an operation panel or a personal computer (not shown). Then, the bent posture maintaining means 20 drives the suction means 21M and starts suctioning and holding the peeling tape PT on the suction surface 21K.

Next, a user or a transport means (not shown) such as an articulated robot or a belt conveyor moves the adherend WK to which the adhesive sheet AS is attached to a predetermined position on the support surface 32A, as shown by the solid line in FIG. When placed, the adherend support means 30 drives a pressure reducing means (not shown) to start suctioning and holding the adherend WK on the support surface 32A. Thereafter, the adherend support means 30 drives the linear motor 31 to move the table 32 to the right, and as shown by the two-dot chain line in FIG. When the position is directly below the linear motor 31, the drive of the linear motor 31 is stopped. Next, the bent posture maintaining means 20 drives the linear motor 21N to retract the auxiliary roller 21Q from below the storage means 21J, as shown by the two-dot chain line in FIG. The housing means 21J is lowered to a predetermined position directly above the adhesive sheet AS while driving the motor 21G and feeding out the peeling tape PT. Then, the bent posture maintaining means 20 drives the heating means 22D and the linear motor 22A to lower the heated pressing head 22C as shown in FIG. Press and attach the peeling tape PT to AS3.

When pasting of the peeling tape PT to the adhesive sheet AS is completed, the bending posture maintaining means 20 stops driving the suction means 21M, drives the linear motor 22A and the direct motor 21G, and drives the pressing head 22C and the accommodation means 21J. Return to the initial position. Next, the bent posture maintaining means 20 drives the direct-acting motor 24E, and pinches the peeling tape PT between the pinch roller 24H and the pressing roller 24D with a predetermined pressing force. Thereafter, the adherend support means 30 drives the linear motor 31 to move the table 32 to the left, and positions the outer peripheral part AS3 of the adhesive sheet AS immediately below the lowest part of the pressing roller 24D. Next, the bent posture maintaining means 20 drives the rotary motor 21D to wind up the peeling tape PT to a predetermined length, and drives the linear motor 24A to move the pressing roller 24D as shown in FIG. 2(B). While bending the peeling tape PT at the lowest part of the tape, press the bent part. Then, the bent posture maintaining means 20 and the adherend supporting means 30 drive the rotary motor 24C and the linear motor 31, and while moving the table 32 to the left, rotate the pressing roller 24D in the counterclockwise direction. The folding means 10 drives the linear motor 11 to move the contact roller 12 to the right while contacting the peeling tape PT and the adhesive sheet AS. As a result, the adhesive sheet AS is peeled off from the adherend WK while being pressed by the lowermost part of the pressing roller 24D following the peeling tape PT, and is folded back by the contact roller 12 to one side. The AS1s are now facing each other.

When the entire adhesive sheet AS is peeled off from the adherend WK, the folding means 10, the bent posture maintaining means 20, and the adherend supporting means 30 stop driving the linear motor 11, rotation motor 24C, and linear motor 31. The rotation of the rotary motor 24C is locked with the other outer peripheral portion AS4 of the adhesive sheet AS being sandwiched between the pressing roller 24D and the pinch roller 24H. Next, the bent posture maintaining means 20 and the folding means 10 drive the rotary motor 21D and the linear motor 11 to move the abutment roller 12 in the left and right direction, and pay out or wind up the peeling tape PT. A region near the outer peripheral portion AS3 of the adhesive sheet AS in the peeling tape PT is located directly below the pressing head 22C. Thereafter, with the bending posture maintaining means 20 locking the rotation of the rotary motor 21D, the folding means 10 and the bending posture maintaining means 20 drive the linear motor 11 and the rotary motor 24C, and pinch the pressing roller 24D. The other outer peripheral part AS4 of the adhesive sheet AS is removed from between the roller 24H and the outer peripheral part AS4 of the adhesive sheet AS is positioned directly below the pressing head 22C, as shown by the two-dot chain line in FIG. 2(B). Next, the folding means 10 drives the linear motor 13 to move the upper chuck member 16 and the lower chuck member 17 to the position shown in FIG. 2(B), and then the folding means 10 drives the linear motor 11. , returns the contact roller 12 to its initial position.

Then, the folding means 10 and the bent posture maintaining means 20 drive the direct-acting motors 15 and 21G to lower the upper chuck member 16 and the storage means 21J, as shown in FIG. The adhesive sheet AS is folded by folding one side AS1 over each other. Next, the bent posture maintaining means 20 drives the heating means 22D and the linear motor 22A to lower the heated pressing head 22C, and as shown in FIG. Press and attach the peeling tape PT to the AS4. Thereafter, the bent posture maintaining means 20 drives the linear motor 22A and the direct-acting motor 21G to accommodate the pressing head 22C in the accommodation means 21J and raise the accommodation means 21J to a predetermined position. Next, the bent posture maintaining means 20 and the folding means 10 drive the rotary motor 21D and the linear motor 13 to move the upper chuck member 16 and the lower chuck member 17 to the right while feeding out the peeling tape PT, and bond the upper chuck member 16 and lower chuck member 17 to the right. The peeling tape PT protruding from the left side of the sheet AS is positioned directly below the cutting blade 23C.

Then, the bent posture maintaining means 20 drives the direct-acting motor 21G and the linear motor 23A to lower the housing means 21J and the cutting blade 23C to cut the peeling tape PT as shown in FIG. 3(B). Next, the bent posture maintaining means 20 drives the direct-acting motor 21G and the linear motor 23A to return the accommodation means 21J and the cutting blade 23C to their initial positions, and then drives the direct-acting motor 21N to return the auxiliary roller 21Q to the initial position. to be restored. Thereafter, the folding means 10 drives the linear motor 13 and the direct motor 15 to return the upper chuck member 16 and the lower chuck member 17 to their initial positions. As a result, the adhesive sheet AS folded in half falls into the collection box 41 due to its own weight and is collected, as shown in FIG. 3(C). Next, when the user or a conveying means (not shown) conveys the adherend WK on the table 32 to the next process, each means drives its respective drive device to return each member to its initial position, and the same operation thereafter. is repeated.

According to the above-described embodiment, since the bent part AS2 of the adhesive sheet AS is maintained in the bent position by the peeling tape PT, the bent part AS2 of the folded adhesive sheet AS tries to return to its original shape and the bent part AS2 is kept in the bent position. It can prevent it from collapsing.

As mentioned above, although the best configuration, method, etc. for carrying out the present invention are disclosed in the above description, the present invention is not limited thereto. That is, although the present invention has been specifically illustrated and described primarily with respect to particular embodiments, modifications may be made to the above-described embodiments in shape, shape, and form without departing from the spirit and scope of the invention. Those skilled in the art can make various modifications in materials, quantities, and other detailed configurations. In addition, the descriptions in which the shapes, materials, etc. disclosed above are limited are provided as examples to facilitate understanding of the present invention, and are not intended to limit the present invention. Descriptions of names of members excluding some or all of the limitations, such as, are included in the present invention.

For example, the folding means 10 may fold the adhesive sheet AS two or more times to fold it into three or more parts, or fold it in two so that the surfaces opposite to the surfaces that were in contact with the adherend WK face each other. , the adhesive sheet AS may be folded into three or more folds, a rod-shaped member, a plate-shaped member, etc. may be employed in place of or in combination with the contact roller 12, and the upper chuck member 16 and In place of or in combination with the lower chuck member 17, other members such as rollers may be employed, and at least one of the upper chuck member 16 and the lower chuck member 17 may be provided with bent portion holding means for holding the bent portion AS2. Such a bent part holding means may hold the bent part AS2 by suctioning and holding the bent part AS2, or by penetrating the bent part AS2 with a penetrating member such as a needle or a protrusion. It can be anything.
The folding means 10 may press and fold the adhesive sheet AS by blowing air, may press the entire or part of the adhesive sheet AS to fold the adhesive sheet AS, or may use a fixing tape (peelable tape) to fold the adhesive sheet AS. The adhesive sheet AS to which PT) is not attached may be folded, and in this case, the bent posture maintaining means 20 applies fixing tape to one outer circumferential portion AS3 and the other outer circumferential portion AS4 after the adhesive sheet AS is folded. You may.
The folding means 10 may fold the adhesive sheet AS without shifting one outer peripheral part AS3 of the adhesive sheet AS from the other outer peripheral part AS3. In this case, the bending posture maintaining means 20 A peeling tape PT may be attached to the other surfaces AS5.

The bent posture maintaining means 20 may maintain the bent posture of the bent portion AS2 in the adhesive sheet AS with a fixing member other than the peeling tape PT instead of or in combination with the peeling tape PT. The member may be, for example, adhesive, pressure-sensitive adhesive, paste, etc., or anything that can maintain the bent position of the bent portion AS2, such as a clip, stapler, rivet, bolt, nut, needle, wire, etc. good.
The bent posture maintaining means 20 may maintain the bent posture of the adhesive sheet AS by adding fixing members to the outer circumferential portions AS3 and AS4 of the folded adhesive sheet AS, or may maintain the bent posture of the adhesive sheet AS at the center of the folded adhesive sheet AS. A fixing member may be added near the bending portion AS2 to maintain the bent posture of the adhesive sheet AS, or the adhesive sheet AS may be crimped with a member other than the storage means 21J and the sheet support member 24K. .
The bent posture maintaining means 20 may have a configuration in which a sheet of peeling tape is attached to the adhesive sheet AS, or it may directly hold and peel the adhesive sheet AS using a drive device, suction holding, etc., without using the peeling tape PT. Alternatively, the adhesive sheet AS may be peeled off by at least one of the driving of the rotation motor 21D, the rotation motor 24C, and the linear motor 31. At least one of the function of attaching the release tape PT to the adhesive sheet AS and the function of peeling the adhesive sheet AS from the adherend WK via the release tape PT may not be provided.

The feeding means 21 may employ an elastic member such as rubber or resin, a driving device, or a pinch roller that pinches the peeling tape PT with the driving roller 21E instead of or in combination with the spring 21F as a biasing means. However, instead of or in combination with the auxiliary roller 21Q, a configuration may be adopted in which the peeling tape PT is brought into contact with the suction surface 21K by a rod-shaped member, a plate-shaped member, or by blowing air. As long as it can be held only by the suction means 21M, the auxiliary roller 21Q may not be provided, and the peeling tape PT may be supported without urging the rotating arm 21B in the direction of the drive roller 21E. , a pinch roller or the like that pinches the peeling tape PT with the drive roller 21E may be used.
The pressing means 22 may not be housed in the housing means 21J, and if a pressure-sensitive adhesive is used as the peeling tape PT, the heating means 22D may or may not be present.
The cutting means 23 may not be housed in the housing means 21J, and may not be necessary when cutting the peeling tape PT with another device.
The guide means 24 may press the area of the adhesive sheet AS that has been peeled off from the adherend WK so that it comes into contact with the area attached to the adherend WK, or may press it so that it does not come into contact with the area that is pasted on the adherend WK. However, the adhesive sheet AS may be pressed at any position such as the left end, the middle, or the right end of the adhesive sheet AS, or the bent portion of the adhesive sheet AS may be pressed at a position other than the bottom of the pressing roller 24D. Alternatively, instead of or in combination with the pinch roller 24H, the peeling tape PT or the like may be sandwiched between the pressing roller 24D using a plate-shaped member or air blowing, or a driving device other than the direct-acting motor 24E may be used. The seat support member 24K may be moved in this manner, or the groove 24J may not be provided in the seat support member 24K.

The adherend support means 30 may move the peeling tape PT without or while moving the adherend WK, or may be used in place of or in combination with the linear motor 31, such as an articulated robot. The adherend WK and the peeling tape PT may be moved by another driving device, and the sheet folding device EA of the present invention may or may not be provided with it.

The sheet disposal means 40 may include a stacking storage means such as a belt conveyor or a multi-arc robot that holds the folded adhesive sheets AS one by one and stacks them in the collection box 41. It may or may not be composed of one or more drive devices for conveying the sheets AS, and it may or may not be included in the sheet folding apparatus EA of the present invention.

The materials, types, shapes, etc. of the adhesive sheet AS, the peeling tape PT, and the adherend WK are not particularly limited. For example, the adhesive sheet AS and the release tape PT may have a circular shape, an oval shape, a polygonal shape such as a triangular or quadrangular shape, or other shapes, or may have an adhesive form such as a pressure-sensitive adhesive or a heat-sensitive adhesive. There may be. In addition, such adhesive sheets AS and peeling tapes PT include, for example, single-layer adhesive sheets, those with an intermediate layer between the base sheet and the adhesive layer, and those with an intermediate layer on the top surface of the base sheet. It may be a sheet with three or more layers, such as a cover layer, or a so-called double-sided adhesive sheet in which the base sheet can be peeled off from the adhesive layer. It may have an intermediate layer, or it may be a single layer or multiple layers without an intermediate layer. Examples of adherends WK include foods, resin containers, semiconductor wafers such as silicon semiconductor wafers and compound semiconductor wafers, circuit boards, information recording substrates such as optical disks, glass plates, steel plates, ceramics, wood plates, resin plates, etc. , members and articles of any form can also be targeted. In addition, adhesive sheet AS can be read in terms of functionality and usage, such as information labels, decorative labels, protective sheets, dicing tapes, die attach films, die bonding tapes, recording layer forming resin sheets, etc. A sheet, film, tape, etc. of any shape can be attached to any adherend WK as described above.

The means and steps in the present invention are not limited in any way as long as they can perform the operations, functions, or steps described with respect to the means and steps; It is not limited to the process at all. For example, if the folding means forms a bent part in the adhesive sheet and folds the adhesive sheet by folding one side of the adhesive sheet, then the technology There is no limitation as long as it falls within the range (descriptions of other means and steps will be omitted).
Furthermore, the drive devices in the embodiments include electric devices such as rotary motors, direct-acting motors, linear motors, single-axis robots, and articulated robots, actuators such as air cylinders, hydraulic cylinders, rodless cylinders, and rotary cylinders. In addition, it is also possible to directly or indirectly combine them (some of them overlap with those exemplified in the embodiment).
In the above embodiment, when a rotating member such as a roller is employed, a driving device for rotationally driving the rotating member may be provided, or the surface of the rotating member or the rotating member itself may be made of deformable material such as rubber or resin. It may be made of a member, the surface of the rotating member or the rotating member itself may be made of a member that does not deform, or other members such as rotating or non-rotating shafts or blades may be used instead of the roller. Alternatively, if a pressing device such as a pressing roller or a pressing head or a pressing member that presses the object to be pressed is used, rollers, round bars, blades can be used in place of or in combination with the examples exemplified above. It is also possible to use materials such as rubber, resin, sponge, etc., or to apply pressure by blowing air, gas, etc., or to press the material using deformable materials such as rubber or resin. It may be composed of a member that does not deform, or a support (holding) means or a support (holding) member that supports (holds) the supported member (held member). If it is, it may be exposed to gripping means such as mechanical chucks or chuck cylinders, Coulomb force, adhesives (adhesive sheets, adhesive tapes), adhesives (adhesive sheets, adhesive tapes), magnetic force, Bernoulli adsorption, suction adsorption, drive equipment, etc. A structure that supports (holds) the supporting member may be adopted, or a cutting means or a cutting member that cuts the member to be cut or forms a cut or a cutting line in the member to be cut is employed. In place of or in combination with the above examples, a cutter blade, laser cutter, ion beam, thermal power, heat, water pressure, heating wire, spraying of gas or liquid, etc. may be used for cutting, or as appropriate. The object to be cut may be moved and cut using a combination of different drive devices.

EA Sheet folding device 10 Folding means 20 Bent posture maintaining means AS Adhesive sheet AS1 One side AS2 Bent part AS3 One outer periphery AS4 Other outer periphery AS5 Other side PT Peeling tape (fixing member)

Claims (4)

Folding means for forming a bent part in the adhesive sheet and folding the adhesive sheet by folding one side of the adhesive sheet over each other;
A fixing member is added to the folded adhesive sheet with one surface folded over the other , and a bending posture maintaining means is provided for maintaining the bending posture of the bent portion with the fixing member. Seat folding device. The folding means folds the adhesive sheet by shifting one outer peripheral part of the adhesive sheet with respect to the other outer peripheral part,
The bent posture maintaining means is characterized in that the fixing member is attached to one surface of the adhesive sheet exposed by shifting and folding it by the folding means and the other surface of the adhesive sheet. The sheet folding device according to claim 1. The bent posture maintaining means applies the fixing member to the adhesive sheet attached to the adherend, peels the adhesive sheet from the adherend via the fixing member, and removes the adhesive sheet from the adherend through the fixing member. 3. The sheet folding device according to claim 1, wherein the bending portion maintains the bending posture. a folding step of forming a bent portion in the adhesive sheet and folding the adhesive sheet by folding one side of the adhesive sheet over each other;
A sheet characterized in that a fixing member is added to the folded adhesive sheet with the one side folded over , and a bending posture maintaining step is performed in which the fixing member maintains the bending posture of the bent portion. Folding method.

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