JP7407568B2 - 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, the adhesive sheet AS (adhesive sheet) may hang down due to its own weight, as shown in FIG. When the adhesive sheet AS is folded back, as shown in FIG. 4(B), there is a possibility that the adhesive sheet AS will be turned over, resulting in a folding failure 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 that can prevent folding defects of adhesive sheets as much as possible.

The present invention employs the configuration described in the claims.

According to the present invention, since the adhesive sheet is prevented from sagging when folded back, folding defects of the adhesive sheet can be prevented as much as possible.

FIG. 1 is an explanatory diagram of a sheet peeling device including a sheet folding device according to an embodiment of the present invention. An explanatory diagram of the operation of the sheet peeling device. An explanatory diagram of the operation of the sheet peeling device. The figure which shows the example of a malfunction of the conventional 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 folds back the adhesive sheet AS, folds the adhesive sheet AS by folding one side AS1 of the adhesive sheet AS, and folds the adhesive sheet AS when folding back the adhesive sheet AS. a peeling means 30 for peeling off the adhesive sheet AS attached to the adherend WK from the adherend WK; and an adherend support means for supporting the adherend WK. 40 and a sheet discarding means 50 for discarding the folded adhesive sheet AS constitute a sheet peeling device EA1. Note that the adhesive sheet AS and the adherend WK are formed into a rectangular shape with vertices at both ends in the left-right direction and both ends in the front-back direction.

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. A lower chuck member 17 is provided.

The droop prevention means 20 is arranged below the folding means 10, and is connected to a plurality of blow-off members 21 such as blow-off pipes and nozzles that blow out gas such as air and gas, and to each blow-off member 21 via piping 22A, A gas supply means 22 such as a pressure pump or a turbine is provided for supplying gas to the blow-off member 21 .

The peeling means 30 includes a feeding means 31 for feeding out a heat-sensitive adhesive peeling tape PT, a pressing means 32 for pressing and sticking the peeling tape PT on the adhesive sheet AS, and a cutting means 33 for cutting the peeling tape PT. , and a guide means 34 for guiding the adhesive sheet AS to which the release tape PT is attached.
The feeding means 31 is supported by a rotating arm 31B that is rotatable around a rotating shaft 31A, and supported by a support roller 31C that supports the peeling tape PT and an output shaft (not shown) of a rotation motor 31D as a driving device. A drive roller 31E, a spring 31F as a biasing means for biasing the rotary arm 31B in the direction of the drive roller 31E, a housing means 31J supported by an output shaft 31H of a direct drive motor 31G as a driving device, and a housing means 31J. A suction means 31M such as a decompression pump or a vacuum ejector that suctions the peeling tape PT through a suction hole 31L formed in a suction surface 31K, which is the bottom surface of the housing means 31J, and a direct-acting drive device as a driving device. It includes an auxiliary roller 31Q that is supported by an output shaft 31P of a motor 31N and brings the peeling tape PT into contact with the suction surface 31K.
The pressing means 32 includes a linear motor 32A as a driving device housed in the housing means 31J, a pressing head 32C supported by a slider 32B of the linear motor 32A, and provided so as to be able to protrude and retract from the bottom surface of the housing means 31J. The pressing head 32C includes a heating means 32D such as a coil heater or a heating side of a heat pipe.
The cutting means 33 includes a linear motor 33A as a driving device housed in the housing means 31J, and a cutting blade 33C supported by a slider 33B of the linear motor 33A and provided so as to be protrusive and retractable from the bottom surface of the housing means 31J. We are prepared.
The guide means 34 includes a linear motor 34A as a driving device, a rotating motor 34C as a driving device supported by a slider 34B of the linear motor 34A, and a pressing roller supported by an output shaft (not shown) of the rotating motor 34C. 34D, a support member 34G supported by an output shaft 34F of a direct-acting motor 34E as a driving device, a pinch roller 34H rotatably supported by the support member 34G, and a cut roller 34H supported by the support member 34G and cut on the upper surface thereof. The sheet support member 34K is provided with a groove 34J for receiving the blade 33C.

The adherend support means 40 is a table that is supported by a linear motor 41 as a driving device and a slider 41A of the linear motor 41, and has a support surface 42A that can be held by suction by a decompression means (not shown) such as a decompression pump or a vacuum ejector. 42.

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

The operation of the sheet peeling device EA1 including the sheet folding device EA described above will be explained.
First, a user (hereinafter simply referred to as "user") of the sheet peeling apparatus EA1 (hereinafter simply referred to as "user") sets the sheet peeling apparatus EA1, in which each member is placed at the initial position shown by the solid line in FIG. After setting the 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 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 moves the adherend WK to which the adhesive sheet AS is attached to a predetermined position on the support surface 42A, as shown by the solid line in FIG. When placed, the adherend supporting means 40 drives a pressure reducing means (not shown) to start suctioning and holding the adherend WK on the support surface 42A. Thereafter, the adherend support means 40 drives the linear motor 41 to move the table 42 to the right, and as shown by the two-dot chain line in FIG. When the linear motor 41 is located directly below, the driving of the linear motor 41 is stopped. Next, the peeling means 30 drives the linear motor 31N to retract the auxiliary roller 31Q from below the accommodation means 31J as shown by the two-dot chain line in FIG. is driven, and while feeding out the release tape PT, the storage means 31J is lowered to a predetermined position directly above the adhesive sheet AS. Then, the peeling means 30 drives the heating means 32D and the linear motor 32A to lower the heated press head 32C and apply the peeling tape PT to the outer circumference AS3 of the adhesive sheet AS. Press and paste.

When pasting 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 direct motor 31G, and initializes the pressing head 32C and the accommodation means 31J. return to position. Next, the peeling means 30 drives the direct-acting motor 34E, and pinches the peeling tape PT between the pinch roller 34H and the pressing roller 34D with a predetermined pressing force. Thereafter, the adherend support means 40 drives the linear motor 41 to move the table 42 to the left, so that the outer circumferential 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 to wind up the peeling tape PT to a predetermined length, and drives the linear motor 34A to move the pressing roller 34D to the uppermost position as shown in FIG. 2(B). While bending the peeling tape PT at the lower part, press the bent part. Then, the peeling means 30 and the adherend support means 40 drive the rotary motor 34C and the linear motor 41, and while moving the table 42 to the left, rotate the pressing roller 34D in the counterclockwise direction, and The tatami means 10 drives the linear motor 11 to move the contact roller 12 to the right while bringing it into contact with 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 34D following the peeling tape PT, and the adhesive sheet AS is folded back by the contact roller 12. Thus, one surface AS1 is in a state facing each other. At this time, the drooping prevention means 20 drives the gas supply means 22 and blows gas from the blowing member 21 onto the adhesive sheet AS, so that the adhesive sheet AS is folded back by the contact roller 12 as shown by the two-dot chain line in FIG. 2(C). This prevents the adhesive sheet AS from hanging down, and prevents the bent portion AS2 formed on the adhesive sheet AS from turning over. 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 back.

When the entire adhesive sheet AS is peeled off from the adherend WK, the folding means 10, the peeling means 30, and the adherend support means 40 stop driving the linear motor 11, rotation motor 34C, and linear motor 41, and the presser foot The rotation of the rotary motor 34C is locked while the other outer peripheral portion AS4 of the adhesive sheet AS is sandwiched between the attaching 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 to move the contact roller 12 in the left and right direction, and pay out or wind up the peeling tape PT to perform the peeling process. A region near the outer peripheral portion AS3 of the adhesive sheet AS in the tape PT is located directly below the cutting blade 33C. Thereafter, 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 The other outer peripheral part AS4 of the adhesive sheet AS is removed from the gap, and as shown in FIG. 3(A), one outer peripheral part AS3 and the other outer peripheral part AS4 of the adhesive sheet AS are aligned. Next, the drooping prevention means 20 stops driving the gas supply means 22, and the folding means 10 drives the linear motor 13 and the direct-acting motor 15 to move the upper chuck member 16 and the lower chuck member 17 as shown in FIG. ), 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 direct-acting motors 15 and 31G to lower the upper chuck member 16 and the storage means 31J, as shown in FIG. The adhesive sheet AS is folded by folding the surfaces AS1 over each other. 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 and cut the peeling tape PT. Thereafter, the peeling means 30 drives the direct-acting motor 31G and the linear motor 33A to return the accommodation means 31J and the cutting blade 33C to the initial position, and then drives the direct-acting motor 31N to return the auxiliary roller 31Q to the initial position. let Next, 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 two falls into the collection box 51 due to its own weight and is collected, as shown in FIG. 3(C). Then, when the user or a conveying means (not shown) conveys the adherend WK on the table 42 to the next process, each means drives its respective drive device to return each member to its initial position, and the same operation is performed thereafter. Repeated.

According to the embodiments described above, since the adhesive sheet AS is prevented from sagging when the adhesive sheet AS is folded back, folding defects of the adhesive sheet AS can be prevented as much as possible.

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 particularly illustrated and described primarily with respect to particular embodiments, there are modifications in shape, shape, and shape to the embodiments described above 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 that limit the shape, material, etc. disclosed above are described as examples to facilitate understanding of the present invention, and do not limit the present invention. Descriptions of names of members that exclude some or all of the limitations such as these are included in the present invention.

For example, the folding means 10 may fold the adhesive sheet AS with one side of the adhesive sheet AS that has not been adhered to the adherend WK, or may fold the adhesive sheet AS two or more times to fold it into three or more folds. Alternatively, instead of or in combination with the contact roller 12, the adhesive sheet AS may be folded using a folding member such as a rod-shaped member or a plate-shaped member, or by blowing air. Alternatively, other pressing members such as rollers may be used instead 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 A bent part holding means for holding the bent part AS2 may be provided, and such a bent part holding means may, for example, hold the bent part AS2 by suction, or insert a penetrating member such as a needle or a protrusion into the bent part AS2. Any type of material may be used, such as a device that holds the bent portion AS2 by penetrating it, and 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 compress and fold the adhesive sheet AS by blowing air, or may fold the adhesive sheet AS by compressing the whole or a part of the adhesive sheet AS, or may fold the adhesive sheet AS by pressing the adhesive sheet AS with a release tape PT. Alternatively, the adhesive sheet AS may be folded without aligning one outer circumferential portion AS3 and the other outer circumferential portion AS4 of the adhesive sheet AS.

The droop prevention means 20 is used instead of or in combination with the blowing member 21 and the gas supply means 22, and supports and guides the adhesive sheet AS from below with a guide member such as a roller or a round bar, or with a blade member, a rod-shaped member, etc. Alternatively, the length of the sheet support member 34K in the front-rear direction may be longer than the length of the adhesive sheet AS in the front-rear direction, and the sheet support member 34K may push up the adhesive sheet AS in the front-rear direction. It may be supported across both ends, or it may be 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 can be suctioned upward by the suction means to remove the adhesive sheet AS. The sheet AS may be prevented from hanging down, the blowing member 21 may be supported by the slider 11A of the linear motor 11 and the blowing member 21 may be moved in the left-right direction, or the sheet AS may be separated from the folding means 10. The blow-off member 21 may be moved in at least one of the left-right direction and the front-back direction using another drive device provided, or the blow-off member 21 may be used to blow gas onto the adhesive sheet AS so that the adhesive sheet AS is It may also be possible to prevent it from sagging.

The peeling means 30 may have a configuration in which a sheet of peeling tape is pasted on the adhesive sheet AS, or it may hold and peel the adhesive sheet AS directly with 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 31D, the rotation motor 34C, and the linear motor 41, and when the adhesive sheet AS is folded, the storage The means 31J and the sheet support member 34K do not need to pressure-bond the adhesive sheet AS, and may or may not be provided in the sheet folding device EA and sheet peeling device EA1 of the present invention, or may be provided with other means. When the peeling tape PT is attached to the adhesive sheet AS in the apparatus described above, the feeding means 31, the pressing means 32, and the cutting means 33 may not be provided.
The feeding means 31 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 31E instead of or in combination with the spring 31F as a biasing 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 adsorption surface 31K using a rod-shaped member, a plate-shaped member, or air blowing, or the peeling tape PT may be brought into contact with the suction surface 31K. As long as it can be held only by the suction means 31M, the auxiliary roller 31Q may not be provided, and the peeling tape PT may be supported without urging the rotating arm 31B in the direction of the drive roller 31E. , a pinch roller or the like that pinches the peeling tape PT with the drive roller 31E may be used.
The pressing means 32 may not be housed in the housing means 31J, and if a pressure-sensitive adhesive is used as the peeling tape PT, the heating means 32D may or may not be present.
The cutting means 33 may not be housed in the housing means 31J, and may not be necessary when cutting the peeling tape PT with another device.
The guide means 34 may press the area of the adhesive sheet AS peeled from the adherend WK so that it comes into contact with the area stuck to the adherend WK, or may press it so that it does not come into contact with the area stuck to 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 34D. Alternatively, instead of or in combination with the pinch roller 34H, the peeling tape PT or the like may be sandwiched between the pressing roller 34D using a plate-shaped member or air blowing, or a drive device other than the direct-acting motor 34E may be used. The seat support member 34K may be moved in this manner, or the groove 34J may not be provided in the seat support member 34K.

The adherend support means 40 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 41, 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 and the sheet peeling device EA1 of the present invention may or may not be provided.

The sheet disposal means 50 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 51. It may be composed of one or more drive devices that convey the sheet AS, and may or may not be included in the sheet folding device EA and 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 release tape PT, and the adherend WK may have a circular shape, an ellipse, a polygon such as a triangle or a quadrangle, or other shapes, and the adhesive sheet AS and the release tape PT may have the following shapes: Adhesive forms such as pressure-sensitive adhesive and heat-sensitive adhesive may also be used. In addition, such adhesive sheets AS and release 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 whose base sheet can be peeled off from an 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; There are no restrictions on the process at all. For example, if the folding means folds back the adhesive sheet and folds the adhesive sheet by folding one side of the adhesive sheet over each other, it is considered to be within the technical scope in light of the common general knowledge at the time of filing. There is no limitation as long as it is present (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-mentioned 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 Droop prevention means AS Adhesive sheet AS1 One side

Claims (2)

Folding means for folding back the adhesive sheet and folding the adhesive sheet by folding one side of the adhesive sheet over each other;
A sheet folding device comprising: a droop prevention means for urging the adhesive sheet before being folded back by the folding means to prevent the adhesive sheet from sagging. a folding step of folding back the adhesive sheet with a folding means , folding one side of the adhesive sheet over each other and folding the adhesive sheet;
A sheet folding method characterized by carrying out a droop prevention step of urging the adhesive sheet before being folded back by the folding means to prevent the adhesive sheet from hanging.

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