JP2021082776A - Sheet folding apparatus and sheet folding method - Google Patents

Abstract

To provide a sheet folding device and sheet folding method, capable of preventing folding failure of an adhesive sheet as much as possible.SOLUTION: A sheet folding apparatus EA includes folding means 10 which folds back an adhesive sheet AS, and folds one surface AS1 of the adhesive sheet AS over each other to fold the adhesive sheet AS, and hanging-down prevention means 20 which prevents the adhesive sheet AS from hanging down when the adhesive sheet AS is folded back.SELECTED DRAWING: Figure 1

Description

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

Conventionally, an apparatus for folding and discarding an adhesive sheet is known (see, for example, Patent Document 1).

JP-A-2017-107945

In the sheet peeling device 10 (sheet folding device) described in Patent Document 1, as shown in FIG. 4 (A), the adhesive sheet AS (adhesive sheet) may hang down due to its own weight, and the adhesive sheet remains hung down. When folded back, as shown in FIG. 4B, the adhesive sheet AS may be rolled up, resulting in a folding defect in which the adhesive sheet cannot be folded accurately.

An object of the present invention is to provide a sheet folding device and a sheet folding method capable of preventing poor folding of an adhesive sheet as much as possible.

The present invention has adopted the configuration described in the claims.

According to the present invention, it is possible to prevent the adhesive sheet from hanging down when the adhesive sheet is folded back, so that it is possible to prevent the adhesive sheet from being poorly folded as much as possible.

The explanatory view of the sheet peeling apparatus provided with the sheet folding apparatus which concerns on one Embodiment of this invention. The operation explanatory drawing of the sheet peeling apparatus. The operation explanatory drawing of the sheet peeling apparatus. The figure which shows the defect example of the conventional sheet folding apparatus.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The X-axis, Y-axis, and Z-axis in the present embodiment are orthogonal to each other, the X-axis and the Y-axis are axes in a predetermined plane, and the Z-axis is an axis orthogonal to the predetermined plane. To do. Further, in the present embodiment, when viewed from the front direction of FIG. 1 parallel to the Y axis, when the direction is indicated, "up" is the direction of the arrow on the Z axis, "down" is the opposite direction, and ""Left" is the direction of the arrow on the X-axis, "right" is the opposite direction, "front" is the middle front direction parallel to the Y-axis, and "rear" is the opposite direction.

The sheet folding device EA is a folding means 10 that folds the adhesive sheet AS and folds one surface AS1 of the adhesive sheet AS to each other to fold the adhesive sheet AS, and the adhesive sheet AS when the adhesive sheet AS is folded back. A peeling means 30 for peeling the adhesive sheet AS attached to the adherend WK from the adherend WK, and an adherend supporting means for supporting the adherend WK, which are provided with a drooping prevention means 20 for preventing the adherend WK from hanging down. The sheet peeling device EA1 is composed of 40 and a sheet disposal means 50 for discarding the folded adhesive sheet AS. The adhesive sheet AS and the adherend WK are formed in a rectangular shape having both ends in the left-right direction and both ends in the front-rear direction as vertices.

The folding means 10 includes a contact roller 12 rotatably supported by a slider 11A of a linear motor 11 as a drive device, a support frame 14 supported by a slider 13A of the linear motor 13 as a drive device, and a support frame. The linear motor 15 as a drive device supported by 14, the upper chuck member 16 as a pressing member supported by the output shaft 15A of the linear motor 15, and the pressing member supported by the lower part of the support frame 14. It includes a lower chuck member 17.

The sagging prevention means 20 is arranged below the folding means 10 and is connected to a plurality of blowout members 21 such as a blowout pipe and a nozzle for blowing out a gas such as air or gas, and to each blowout member 21 via a pipe 22A. It is provided with a gas supply means 22 such as a pressurizing pump or a turbine that supplies gas to the blowout member 21.

The peeling means 30 includes a feeding means 31 for feeding out the heat-sensitive adhesive peeling tape PT, a pressing means 32 for pressing and attaching the peeling tape PT to the adhesive sheet AS, and a cutting means 33 for cutting the peeling tape PT. The guide means 34 for guiding the adhesive sheet AS to which the peeling tape PT is attached is provided.
The feeding means 31 is supported by a rotary arm 31B that can rotate around the rotary shaft 31A, and is supported by a support roller 31C that supports the peeling tape PT and an output shaft (not shown) of the rotary motor 31D as a drive device. The drive roller 31E, the spring 31F as an urging means for urging the rotary arm 31B in the direction of the drive roller 31E, the accommodating means 31J supported by the output shaft 31H of the linear motor 31G as the driving device, and the accommodating means 31J. A suction means 31M such as a decompression pump or a vacuum ejector that is housed inside and sucks the peeling tape PT through a suction hole 31L formed in the suction surface 31K which is the bottom surface of the storage means 31J, and a direct operation as a drive device. It is supported by the output shaft 31P of the motor 31N and includes an auxiliary roller 31Q that brings the peeling tape PT into contact with the suction surface 31K.
The pressing means 32 includes a linear motor 32A as a drive device housed in the accommodating means 31J, a pressing head 32C supported by the slider 32B of the linear motor 32A and provided so as to be retractable from the bottom surface of the accommodating means 31J. It is provided with a coil heater provided on the pressing head 32C and a heating means 32D such as a heating side of a heat pipe.
The cutting means 33 includes a linear motor 33A as a drive device housed in the accommodating means 31J, and a cutting blade 33C supported by the slider 33B of the linear motor 33A and provided so as to be recessed from the bottom surface of the accommodating means 31J. I have.
The guide means 34 includes a linear motor 34A as a drive device, a rotary motor 34C as a drive device supported by a slider 34B of the linear motor 34A, and a pressing roller supported by an output shaft (not shown) of the rotary motor 34C. 34D, a support member 34G supported by an output shaft 34F of a linear motor 34E as a drive device, a pinch roller 34H rotatably supported by the support member 34G, and a pinch roller 34H supported by the support member 34G and cut on the upper surface thereof. It includes a seat support member 34K in which a groove 34J for receiving the entry of the blade 33C is formed.

The adherend support means 40 is a table having a linear motor 41 as a drive device and a support surface 42A supported by a slider 41A of the linear motor 41 and capable of being attracted and held by a decompression means (not shown) such as a decompression pump or a vacuum ejector. It has 42 and.

The sheet disposal means 50 includes a collection box 51 for collecting the adhesive sheet AS peeled from the adherend WK.

The operation of the sheet peeling device EA1 provided with the above sheet folding device EA will be described.
First, with respect to the sheet peeling device EA1 in which each member is arranged at the initial position shown by the solid line in FIG. 1, the user of the sheet peeling device EA1 (hereinafter, simply referred to as “user”) is used for peeling as shown in the figure. After setting the tape PT, a signal for starting automatic operation is input via an input means such as an operation panel or a personal computer (not shown). Then, the peeling means 30 drives the suction means 31M and starts sucking and holding the peeling tape PT on the suction surface 31K.

Next, the user or a transport means (not shown) such as an articulated robot or a belt conveyor places the adherend WK to which the adhesive sheet AS is attached at a predetermined position on the support surface 42A as shown by the solid line in FIG. When mounted, the adherend supporting means 40 drives a decompression means (not shown) to start adsorbing and holding the adherend WK on the support surface 42A. After that, the adherend supporting means 40 drives the linear motor 41 to move the table 42 to the right, and as shown by the alternate long and short dash line in FIG. 1, one outer peripheral portion AS3 of the adhesive sheet AS is the pressing head 32C. When it is located directly below, the driving of the linear motor 41 is stopped. Next, the peeling means 30 drives the linear motion motor 31N, and as shown by the alternate long and short dash line in FIG. 1, the auxiliary roller 31Q is retracted from below the accommodating means 31J, and then the rotary motor 31D and the linear motion motor 31G The accommodating means 31J is lowered to a predetermined position directly above the adhesive sheet AS while feeding out the peeling tape PT. Then, the peeling means 30 drives the heating means 32D and the linear motor 32A, lowers the heated pressing head 32C as shown in FIG. 2A, and puts the peeling tape PT on the outer peripheral portion AS3 of the adhesive sheet AS. Press and paste.

When the attachment of the peeling tape PT to the adhesive sheet AS is completed, the peeling means 30 stops driving the suction means 31M, drives the linear motor 32A and the linear motor 31G, and initializes the pressing head 32C and the accommodating means 31J. Return to the position. Next, the peeling means 30 drives the linear motion motor 34E, and the peeling tape PT is sandwiched between the pinch roller 34H and the pressing roller 34D with a predetermined pressing force. After that, the adherend supporting means 40 drives the linear motor 41 to move the table 42 to the left, and the outer peripheral portion AS3 of the adhesive sheet AS is positioned directly below the lowermost portion of the pressing roller 34D. Next, the peeling means 30 drives the rotary motor 31D, winds the peeling tape PT by a predetermined length, drives the linear motor 34A, and as shown in FIG. 2B, the most of the pressing roller 34D. While bending the peeling tape PT at the lower part, the bent portion is pressed. Then, the peeling means 30 and the adherend supporting means 40 drive the rotation motor 34C and the linear motor 41, and while moving the table 42 to the left, the pressing roller 34D is rotated in the counterclockwise rotation direction and folded. The tatami mat means 10 drives the linear motor 11 to move the contact roller 12 to the right while contacting the peeling tape PT or the adhesive sheet AS. As a result, the adhesive sheet AS is peeled off from the adherend WK while being pressed by the lowermost portion of the pressing roller 34D following the peeling tape PT, and the adhesive sheet AS is folded back by the abutting roller 12. One surface AS1 is in a state of facing each other. At this time, the drooping prevention means 20 drives the gas supply means 22 and blows the gas from the blowout member 21 onto the adhesive sheet AS, so that the gas is folded back by the contact roller 12 as shown by the alternate long and short dash line in FIG. The adhesive sheet AS is prevented from hanging down, and the bent portion AS2 formed on the adhesive sheet AS is prevented from being rolled up. The bent portion AS2 is a portion where the adhesive sheet AS is bent, which is formed when the adhesive sheet AS is folded back.

When the entire adhesive sheet AS is peeled from the adherend WK, the folding means 10, the peeling means 30, and the adherend support means 40 stop driving the linear motor 11, the rotary motor 34C, and the linear motor 41, and presser. The rotation of the rotation motor 34C is locked with the other outer peripheral portion AS4 of the adhesive sheet AS sandwiched between the attachment roller 34D and the pinch roller 34H. Next, the peeling means 30 and the folding means 10 drive the rotary motor 31D and the linear motor 11, move the contact roller 12 in the left-right direction, and unwind or wind the peeling tape PT to peel the peeling tape PT. The region near the outer peripheral portion AS3 of the adhesive sheet AS in the tape PT is positioned directly below the cutting blade 33C. After that, with the peeling means 30 locking the rotation of the rotary motor 31D, the folding means 10 and the peeling means 30 drive the linear motor 11 and the rotary motor 34C, and the pressing roller 34D and the pinch roller 34H are brought together. The other outer peripheral portion AS4 of the adhesive sheet AS is escaped from the space, and as shown in FIG. 3A, one outer peripheral portion AS3 of the adhesive sheet AS and the other outer peripheral portion AS4 are aligned with each other. Next, the droop prevention means 20 stops driving the gas supply means 22, the folding means 10 drives the linear motor 13 and the linear motor 15, and the upper chuck member 16 and the lower chuck member 17 are shown in FIG. 3 (A). ), Then the linear motor 11 is driven to return the contact roller 12 to the initial position.

Then, the folding means 10 and the peeling means 30 drive the linear motion motors 15 and 31G, and as shown in FIG. 3B, the upper chuck member 16 and the accommodating means 31J are lowered to one of the adhesive sheet AS. The surfaces AS1 are folded over each other to fold the adhesive sheet AS. Next, the peeling means 30 drives the suction means 31M to suck and hold the peeling tape PT on the suction surface 31K, and then drives the linear motor 33A to lower the cutting blade 33C to cut the peeling tape PT. After that, the peeling means 30 drives the linear motor 31G and the linear motor 33A to return the accommodating means 31J and the cutting blade 33C to the initial positions, and then drives the linear motor 31N to return the auxiliary roller 31Q to the initial position. Let me. Next, the folding means 10 drives the linear motor 13 and the linear motor 15, and returns the upper chuck member 16 and the lower chuck member 17 to the initial positions. As a result, as shown in FIG. 3C, the adhesive sheet AS folded in half falls into the collection box 51 due to its own weight and is collected. Then, when the user or the conveying means (not shown) conveys the adherend WK on the table 42 to the next step, each means drives each driving device and returns each member to the initial position, and the same operation thereafter is performed. Repeated.

According to the above-described embodiment, since the adhesive sheet AS is prevented from hanging down when the adhesive sheet AS is folded back, it is possible to prevent the adhesive sheet AS from being poorly folded as much as possible.

As described above, the best configuration, method, etc. for carrying out the present invention are disclosed in the above description, but the present invention is not limited thereto. That is, the present invention is particularly illustrated and described primarily with respect to specific embodiments, but without departing from the scope of the technical idea and purpose of the present invention, with respect to the embodiments described above. Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations. Further, the description limiting the shape, material, etc. disclosed above is exemplarily described for facilitating the understanding of the present invention, and does not limit the present invention. Therefore, those shapes, materials, etc. The description by the name of the member which removes a part or all of the limitation such as is included in the present invention.

For example, the folding means 10 may fold the adhesive sheet AS whose one surface is a surface that has not been adhered to the adherend WK in the adhesive sheet AS, or the adhesive sheet AS is bent twice or more and folded in three or more. The adhesive sheet AS may be bent so as to be, or the adhesive sheet AS may be folded back by blowing air or a folding member such as a rod-shaped member or a plate-shaped member in place of or in combination with the contact roller 12. Alternatively, another pressing member such as a roller may be adopted in place of or in combination with the upper chuck member 16 and the lower chuck member 17, or at least one of the upper chuck member 16 and the lower chuck member 17 may be used. A bent portion holding means for holding the bent portion AS2 may be provided, and such a bent portion holding means may, for example, suck and hold the bent portion AS2 or attach a penetrating member such as a needle or a protrusion to the bent portion AS2. Anything may be used, such as one that holds the bent portion AS2 by penetrating it, and it is equipped with a detection means such as a sensor or a camera that detects the sagging of the adhesive sheet AS, and prevents sagging based on the detection result of the detection means. The means 20 may drive the gas supply means 22.
The folding means 10 may be folded by crimping the adhesive sheet AS by blowing air, may be folded by crimping all or part of the adhesive sheet AS, or the adhesive sheet AS may be folded, or a peeling tape PT is attached. The unbonded adhesive sheet AS may be folded, or the adhesive sheet AS may be folded without aligning one outer peripheral portion AS3 and the other outer peripheral portion AS4 of the adhesive sheet AS.

The droop prevention means 20 is used in place of or in combination with the blowout member 21 and the gas supply means 22 to support and guide the adhesive sheet AS from below with a guide member such as a roller or a round bar, or a blade material, a rod-shaped member, or the like. The adhesive sheet AS may be pushed up by the push-up member, or the length of the sheet support member 34K in the front-rear direction is made longer than the length of the adhesive sheet AS in the front-rear direction, and the sheet support member 34K is used to push the adhesive sheet AS in the front-rear direction. It may be supported over both ends, or it is provided with a suction means such as a suction nozzle connected to a suction force applying means such as a decompression pump or a vacuum ejector, and the adhesive sheet AS is sucked upward by the suction means to adhere the adhesive. The sheet AS may be prevented from hanging down, the blowout member 21 may be supported by the slider 11A of the linear motor 11 and the blowout member 21 may be moved in the left-right direction, or the seat AS may be separated from the folding means 10. The blowout member 21 may be moved in at least one direction in the left-right direction and the front-back direction by another drive device provided, or a single blowout member 21 blows gas onto the adhesive sheet AS to cause the adhesive sheet AS. It may be prevented from hanging down.

The peeling means 30 may have a configuration in which a single-wafer peeling tape is attached to the adhesive sheet AS, or the adhesive sheet AS is directly held and peeled by a driving device, suction holding, or the like without using the peeling tape PT. Alternatively, the adhesive sheet AS may be peeled off by at least one drive among the drive of the rotary motor 31D, the drive of the rotary motor 34C, and the drive of the linear motor 41, and the adhesive sheet AS is accommodated when folded. The adhesive sheet AS may or may not be crimped by the means 31J and the sheet support member 34K, and may or may not be provided in the sheet folding device EA or the sheet release device EA1 of the present invention. When the release tape PT is attached to the adhesive sheet AS in the above device, the feeding means 31, the pressing means 32, and the cutting means 33 may not be provided.
As the feeding means 31, instead of or in combination with the spring 31F, an elastic member such as rubber or resin, a driving device, or a pinch roller that sandwiches the peeling tape PT with the driving roller 31E may be adopted as the urging means. However, instead of or in combination with the auxiliary roller 31Q, a configuration may be adopted in which the peeling tape PT is brought into contact with the suction surface 31K by blowing a rod-shaped member, a plate-shaped member, or air, or the peeling tape PT may be used. If it can be held only by the suction means 31M, the auxiliary roller 31Q may not be provided, or the peeling tape PT may be supported without urging the rotary arm 31B in the direction of the drive roller 31E. , A pinch roller or the like that sandwiches the peeling tape PT with the drive roller 31E may be adopted.
The pressing means 32 may or may not be housed in the accommodating means 31J, and when a pressure-sensitive adhesive tape is adopted as the peeling tape PT, the heating means 32D may or may not be present.
The cutting means 33 may not be accommodated in the accommodating means 31J, and may not be provided when the peeling tape PT is cut by another device.
The guide means 34 may press the region peeled from the adherend WK in the adhesive sheet AS so as to come into contact with the region attached to the adherend WK, or may press the region so as not to come into contact with the adherend WK. However, the adhesive sheet AS may be pressed at any position such as the left end portion, the middle portion, and the right end portion of the adhesive sheet AS, and the bent portion of the adhesive sheet AS is pressed at a position other than the lowermost portion of the pressing roller 34D. Alternatively, the peeling tape PT or the like may be sandwiched between the pressing roller 34D and the plate-shaped member or by blowing air in place of or in combination with the pinch roller 34H, or a drive device other than the linear motion motor 34E. The seat support member 34K may be moved, or the seat support member 34K may not be provided with the groove 34J.

The adherend supporting means 40 may move the peeling tape PT without or while moving the adherend WK, or may use the linear motor 41 in place of or in combination with an articulated robot or the like. The adherend WK and the peeling tape PT may be moved by another drive device, and may or may not be provided in the sheet folding device EA or the sheet peeling device EA1 of the present invention.

The sheet disposal means 50 may be provided with a stacking storage means such as a belt conveyor or a multi-indirect robot that holds the folded adhesive sheets AS one by one and stacks them in the collection box 51, or the peeled adhesive. It may or may not be composed of one or more drive devices for transporting the sheet AS, and may or may not be provided in the sheet folding device EA and the sheet peeling device EA1 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, the peeling tape PT, and the adherend WK may have a circular shape, an elliptical shape, a polygonal shape such as a triangle or a quadrangle, or any other shape. It may be in an adhesive form such as pressure-sensitive adhesiveness or heat-sensitive adhesiveness. Further, such an adhesive sheet AS or a peeling tape PT is, for example, a single layer having only an adhesive layer, a material having an intermediate layer between the base sheet and the adhesive layer, or an upper surface of the base sheet. It may have three or more layers such as having a cover layer, and may be a so-called double-sided adhesive sheet capable of peeling the base sheet from the adhesive layer, and the double-sided adhesive sheet may be a single layer or a plurality of layers. It may be one having an intermediate layer of layers, or one having a single layer or multiple layers without an intermediate layer. The adherend WK includes, for example, foods, resin containers, semiconductor wafers such as silicon semiconductor wafers and compound semiconductor wafers, circuit substrates, information recording substrates such as optical disks, glass plates, steel plates, pottery, wood plates or resin plates. , Any form of member or article can also be targeted. It should be noted that the adhesive sheet AS can be read in a functional and versatile manner, and for example, any label for writing information, a decorative label, a protective sheet, a dicing tape, a die attach film, a die bonding tape, a recording layer forming resin sheet, or the like can be used. Any sheet, film, tape, etc. of any shape can be attached to any adherend WK as described above.

The means and processes in the present invention are not limited as long as they can perform the operations, functions or processes described for the means and processes, much less the components of the mere embodiment shown in the above-described embodiment. It is not limited to the process at all. For example, if the folding means is such that the adhesive sheet is folded back and one surface of the adhesive sheet is folded over each other to fold the adhesive sheet, it is within the technical scope in light of the common general technical knowledge at the time of filing. If there is, there is no limitation (the description of other means and processes is omitted).
Further, the drive equipment in the above embodiment includes electric equipment such as a rotary motor, a linear motor, a linear motor, a single-axis robot, and an articulated robot, and actuators such as an air cylinder, a hydraulic cylinder, a rodless cylinder, and a rotary cylinder. In addition to being able to be adopted, it is also possible to adopt a combination thereof directly or indirectly (some of which overlap with those illustrated in the embodiment).
In the above embodiment, when a rotating member such as a roller is adopted, a driving device for rotationally driving the rotating member may be provided, or the surface of the rotating member or the rotating member itself can be deformed by rubber, resin, or the like. It may be composed of a member, the surface of the rotating member or the rotating member itself may be composed of a member that does not deform, or another member such as a shaft or a blade that rotates or does not rotate may be adopted instead of the roller. Alternatively, when a pressing means such as a pressing roller or a pressing head or a pressing member that presses a pressed object is adopted, a roller, a round bar, or a blade may be used in place of or in combination with the above-exemplified one. A member such as a material, rubber, resin, or sponge may be adopted, or a structure that presses by blowing a gas such as air or gas may be adopted, or a deformable member such as rubber or resin may be used to press. It may be composed of a member that does not deform, or a member that supports (holds) a supported member (held member) such as a supporting (holding) means or a supporting (holding) member. If so, it is covered with a gripping means such as a mechanical chuck or chuck cylinder, Coulomb force, adhesive (adhesive sheet, adhesive tape), adhesive (adhesive sheet, adhesive tape), magnetic force, Bernoulli suction, suction suction, drive equipment, etc. A configuration in which the support member is supported (held) may be adopted, or when a member to be cut such as a cutting means or a cutting member is cut, or a member having a cut or a cutting line is formed in the member to be cut. , In place of or in combination with the ones exemplified above, adopt a cutter blade, laser cutter, ion beam, thermal power, heat, hydraulic pressure, heating wire, spraying gas or liquid, etc., or as appropriate. It is also possible to move the device to be cut by combining various drive devices to cut the gas.

EA sheet folding device 10 folding means 20 hanging prevention means AS adhesive sheet AS1 one side

Claims (2)

Folding means for folding the adhesive sheet, folding one surface of the adhesive sheet against each other, and folding the adhesive sheet.
A sheet folding device comprising a sagging prevention means for preventing the adhesive sheet from hanging when the adhesive sheet is folded back. A folding step of folding back the adhesive sheet, folding one surface of the adhesive sheet against each other, and folding the adhesive sheet.
A sheet folding method characterized by carrying out a sagging prevention step of preventing the adhesive sheet from hanging when the adhesive sheet is folded back.

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