Sheet feeding device and sheet feeding method

Abstract

A sheet supply device (EA) has: an extraction device (10) that extracts a roll (RS) in which a plurality of adhesive sheet bases (AB) connected via a connecting tape (CT) are temporarily attached to a release sheet (RL); a cutting device (20) that forms a closed loop-shaped cut (CU) on the adhesive sheet bases (AB) in the roll (RS) extracted by the extraction device (10), and forms an adhesive sheet (AS) on the inner side of the cut (CU); a release device (30) that releases the adhesive sheet (AS) from the release sheet (RL), and supplies the adhesive sheet (AS); a detection device (40) that detects the connecting tape (CT) connecting the roll (RS); and the cutting device (20) forms the cut (CU) in a manner that the connecting tape (CT) is not located on the inner side of the cut (CU) based on the detection result of the detection device (40).

Description

Technical Field

[0001] This invention relates to a sheet feeding device and a sheet feeding method. Background Technology

[0002] A sheet feeding device is known in which a closed-loop slit is formed on the adhesive sheet substrate to form a roll of material temporarily attached to a peelable sheet, and the adhesive sheet is formed inside the slit (for example, see Document 1: Japanese Patent Application Publication No. 2020-68327). Additionally, a technique for connecting multiple rolls of material with a connecting belt is known (for example, see Document 2: Japanese Patent Application Publication No. 2014-58373).

[0003] In the sheet adhesion apparatus EA (sheet supply apparatus) described in Document 1, when a first sheet AS1 (adhesive sheet) is formed by connecting new and old strips RS2 and RS1 (rolls) connected by the connecting adhesive sheet SS (connecting tape) described in Document 2, a defective sheet with the connecting tape formed on the adhesive sheet is supplied and adhered to the bonded object. Summary of the Invention

[0004] The purpose of this invention is to provide a sheet supply device and a sheet supply method that can prevent the supply of defective sheets with connecting strips on adhesive sheets.

[0005] The present invention adopts the structure described in the claims.

[0006] According to the present invention, based on the detection results of the detection device, the cut is formed in such a way that the connecting strip is not located inside the cut, thereby preventing the supply of defective sheets with the connecting strip on the adhesive sheet. Attached Figure Description

[0007] Figure 1A This is an explanatory diagram of a sheet adhesion device according to one embodiment of the present invention.

[0008] Figure 1B This is an explanatory diagram of a sheet adhesion device according to one embodiment of the present invention.

[0009] Figure 1C This is an explanatory diagram of a sheet adhesion device according to one embodiment of the present invention.

[0010] Figure 1D This is an explanatory diagram of a sheet adhesion device according to one embodiment of the present invention. Detailed Implementation

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0012] It should be noted that in this embodiment, the X-axis, Y-axis, and Z-axis are orthogonal. The X-axis and Y-axis are axes within a defined plane, and the Z-axis is an axis orthogonal to the defined plane. Furthermore, in this embodiment, [the following is an explanation of the concept of "parallel to the Y-axis"]. Figure 1A When observing from the front direction as the reference direction, "up" is the direction marked by the arrow on the Z-axis, and "down" is its opposite direction; "left" is the direction marked by the arrow on the X-axis, and "right" is its opposite direction; "front" is the direction marked by the arrow on the Y-axis, and "back" is its opposite direction.

[0013] The sheet supply device EA includes: an extraction device 10, which performs an extraction process of extracting a roll RS formed by connecting multiple adhesive sheet substrates AB to a release sheet RL via a connecting band CT; a cutting device 20, which performs a cutting process of forming a closed-loop slit CU on the adhesive sheet substrates AB in the roll RS extracted by the extraction device 10, and forming an adhesive sheet AS inside the slit CU; and a peeling plate 30, which serves as a peeling device, peels the adhesive sheet AS from the release sheet RL. The adhesive sheet AS is supplied with a peeling process; a detection device 40 performs a detection process for detecting the connection with a CT; an adjustment device 50 performs an adjustment process for adjusting the length of the roll RS from the detection position DP of the detection device 40 to the cut formation position CP of the cutting device 20 to a specified length; a sheet adhesion device EA1 is composed of a pressing roller 60 as a pressing device and a support device 70 supporting the bonded body WK; the pressing roller 60 presses and adheres the adhesive sheet substrate AB to the bonded body WK.

[0014] In addition, in this embodiment, the roll material RS adopts a structure in which multiple adhesive sheet substrates AB are pre-jointed via a connecting tape CT.

[0015] The extraction device 10 includes: a support roller 11 that supports the roll material RS; a guide roller 12 that guides the roll material RS; a peeling roller 13 as a peeling member that folds back the useless sheet US formed on the outside of the cut CU and peels the useless sheet US from the peeling sheet RL; a recovery roller 14 as a recovery device that is supported on the output shaft of a drive device (not shown) and, during the automatic operation of the sheet adhesion device EA1, always applies a predetermined tension to the useless sheet US between the stripping roller 13 and recovers the useless sheet US; a drive roller 15 that is supported on the output shaft of a rotary motor 15A (not shown) as a drive device and clamps the peeling sheet RL with a clamping roller 15B; and a recovery roller 16 as a recovery device that is supported on the output shaft of a drive device (not shown) and, during the automatic operation of the sheet adhesion device EA1, always applies a predetermined tension to the peeling sheet RL between the recovery roller 16 and the clamping roller 15B and recovers the peeling sheet RL.

[0016] The cutting device 20 includes: a rotary motor 21 as a drive device; a die-cutting roller 22 supported on the output shaft 21A of the rotary motor 21 and having a cutting edge 22A as a closed-loop cutting member on its circumferential surface; an impression roller 23 that rotates synchronously with the die-cutting roller 22; and forming the cut CU based on the detection result of the detection device 40 in a manner where the CT is not located inside the cut CU.

[0017] The detection device 40 consists of a camera, a projector and other imaging devices, as well as various sensors such as optical sensors and ultrasonic sensors. It can detect the presence of the CT-connector and the width of the roll material being pulled out in the CT-connector direction.

[0018] The adjustment device 50 includes a linear motor 51 as a drive device and a guide roller 52 that is supported by a slider 51A on the linear motor 51 via a bracket 51B and guides the roll material RS.

[0019] The support device 70 includes: a linear motor 71 as a drive device; a worktable 72 supported on a slider 71A of the linear motor 71, and having a pressure-reducing device (holding device) (not shown) such as a pressure-reducing pump or a vacuum injector, which can hold the adsorbed object support surface 72A and the frame support surface 72B respectively.

[0020] Explain the operation of the sheet adhesion device EA1 described above.

[0021] First, regarding in Figure 1A The sheet adhesion device EA1, with each component positioned at the initial location shown by the solid line, is used by the user of the sheet adhesion device EA1 (hereinafter referred to as "the user"). After setting the roll material RS as shown in the figure, the user inputs the length of the roll material AS in the extraction direction into a control device (not shown) such as a personal computer or sequence generator via an operation panel (not shown) or other operating device, and inputs a signal to start automatic operation. Next, the adjustment device 50 drives the linear motor 51 to move the guide roller 52 left and right, adjusting the length of the roll material RS from the detection position DP of the detection device 40 (where the CT is used for connection) to the cut-forming position CP of the cut-forming device 20 (where the cut-forming device 20 forms the cut-out CU), to a predetermined length, for example, 10 mm longer than the length of the roll material AS in the extraction direction. Afterward, the extraction device 10 and the cut-forming device 20 drive the rotary motors 15A and 21 to extract the roll material RS while forming the cut-out CU on the adhesive sheet substrate AB. Figure 1A As shown, if the leading end of the previous adhesive sheet AS in the extraction direction has peeled off a predetermined length at the peeling edge 31 of the peeling plate 30, the drive of the rotating motors 15A and 21 is stopped. At this time, one or more next adhesive sheets AS are formed on the rear side of the previous adhesive sheet AS in the extraction direction.

[0022] Then, as Figure 1A As shown, when a user or a multi-joint robot and a conveyor belt (not shown) place the bonded object WK and the ring frame RF (a frame component) at a predetermined position on the bonded object support surface 72A and the frame support surface 72B, the support device 70 drives a pressure-reducing device (not shown) and begins to hold the bonded object WK and the ring frame RF at the bonded object support surface 72A and the frame support surface 72B. Next, the support device 70 drives the linear motor 71 to move the worktable 72 to the left. When the worktable 72 reaches the predetermined position, the extraction device 10 and the cutting device 20 drive the rotary motors 15A and 21, forming a cut CU on the adhesive sheet substrate AB while simultaneously extracting the roll material RS, in accordance with the moving speed of the worktable 72. Thus, as... Figure 1A As shown by the double-dotted line, the previous adhesive sheet AS is peeled off from the peeling sheet RL at the peeling edge 31 of the peeling plate 30. The adhesive sheet AS peeled off from the peeling sheet RL is pressed by the pressing roller 60 and adhered to the ring frame RF and the bonded body WK. Then, the leading adhesive sheet AS is completely adhered to the ring frame RF and the bonded body WK to form a single piece UP. When the leading end of the next adhesive sheet AS after the leading adhesive sheet AS is peeled off a predetermined length at the peeling edge 31 of the peeling plate 30 in the extraction direction, the extraction device 10 and the cutting device 20 stop driving the rotating motors 15A and 21. Next, when the worktable 72 supporting the single piece UP disengages from under the pressing roller 60, the support device 70 stops driving the linear motor 71 and stops driving the pressure reducing device (not shown), thereby releasing the adhesion and holding of the bonded body support surface 72A and the frame support surface 72B to the bonded body WK and the ring frame RF. Furthermore, when the user or a conveying device (not shown) transports the integrated UP to the next process, each device drives its own drive equipment to return each component to its initial position, and then repeats the same action as described above.

[0023] It should be noted that during the repetition of the same operation described above, the cutting device 20 forms the cut CU such that the connecting tape CT is not located inside the cut CU based on the detection result of the detection device 40. That is, since the length of the roll material RS from the detection position DP to the cut formation position CP is adjusted to a predetermined length by the adjustment device 50, the cutting device 20 can determine whether the connecting tape CT is located inside the cut CU when forming the next cut CU. In this determination, if it is determined that the connecting tape CT is not located inside the cut CU, the cutting device 20 does not perform any special operation (see reference). Figure 1B On the other hand, if it is determined that the connecting CT is located inside the incision CU, the cutting device 20 does not perform the incision CU formation operation before the connecting CT passes through the incision formation position CP (see reference). Figure 1C , Figure 1D ).

[0024] According to the above-described implementation, based on the detection results of the detection device 40, the cut CU is formed in such a way that the connecting CT is not located inside the cut CU, thus preventing the presence of defective sheets with connecting CT on the adhesive sheet AS.

[0025] As described above, although the preferred configurations, methods, etc., for carrying out the present invention have been disclosed in the foregoing description, the present invention is not limited thereto. That is, although the present invention has been specifically illustrated and described with regard to particular embodiments, those skilled in the art can make various modifications to the embodiments described above in terms of shape, material, quantity, and other detailed configurations without departing from the technical concept and scope of the present invention. In addition, the descriptions of shapes, materials, etc., disclosed above are illustrative descriptions for ease of understanding of the present invention and do not limit the present invention. Therefore, the descriptions of component names other than some or all of these limitations on shapes, materials, etc., are included in the present invention.

[0026] For example, the extraction device 10 can use plate-shaped components or shaft components to replace the support rollers 11 or guide rollers 12 to support or guide the roll material RS, the peel sheet RL, and the waste sheet US. Alternatively, it can support the roll material RS by fanning it without winding it. It can also use a recycling device that fanns it without winding the peel sheet RL and the waste sheet US, or shreds or randomly gathers the peel sheet RL and the waste sheet US using a shredder or the like. Alternatively, it can not use a recycling device.

[0027] The cutting device 20 can either use a drive device that moves the die-cutting roller 22 away from the adhesive sheet substrate AB to form a cut CU, or use a drive device that moves the cutting blade and other cutting components relative to the adhesive sheet substrate AB in a direction orthogonal to the roll extraction direction, and form the cut CU only by the linear movement of the cutting components.

[0028] like Figure 1A As shown, the detection device 40 can be set at a position where the roll material RS is clamped and opposite to the guide roller 12, or at a position where it is not opposite to the guide roller 12. As long as the length of the roll material RS from the detection position DP to the cut formation position CP is greater than the length of the roll material extraction direction of the adhesive sheet AS, it can be set at any position.

[0029] The adjusting device 50 can make the specified length of the roll material RS from the detection position DP to the cut formation position CP the same as, for example, the length of the roll material AS in the roll-out direction, or 5mm or 30mm longer than the length of the roll material AS in the roll-out direction. If it is longer than the length of the roll material AS in the roll-out direction, it can be any length. The roll material RS can be guided by a plate-shaped component or a shaft component instead of the guide roller 52. Multiple adjusting devices 50 can be provided. They can be provided on the sheet supply device EA or the sheet adhesion device EA1 of the present invention, or they can not be provided on them. If they are not provided on them, the length of the roll material RS from the detection position DP to the cut formation position CP is greater than or equal to the length of the roll material AS in the roll-out direction, as long as the length is known in advance.

[0030] The pressing device can adhere the adhesive sheet AS to the bonded body WK and the ring frame RF, or it can adhere the adhesive sheet AS only to the bonded body WK. Alternatively, it can use the ring frame RF as the bonded body and adhere the adhesive sheet AS only to the ring frame RF. It can be installed on the sheet adhesion device EA1 of the present invention or not. If it is not installed on it, other devices can be used to press the adhesive sheet AS onto the bonded body WK or the ring frame RF for adhesion.

[0031] The support unit 70 may or may not support the ring frame RF. It may be installed on the sheet adhesion device EA1 of the present invention or not. If it is not installed on it, other devices may be used to support the bonded body WK or the ring frame RF.

[0032] like Figure 1A As shown in the figure with AA attached, the sheet feeding device EA and the sheet adhesion device EA1 can be equipped with a connecting device 80 that connects multiple adhesive sheet substrates AB via a connecting band CT. The connecting device 80 connects the roll RS supported by the support roller 11 and the roll RS supported by the support roller 81, and then the roll RS is extracted by the extraction device 10. As the connecting device 80, various devices such as the connecting device 15 described in Japanese Patent Application Publication No. 2014-58333 and the long strip connecting device 10 described in Japanese Patent Application Publication No. 2018-87886 can also be used.

[0033] The sheet feeding device EA and the sheet adhesion device EA1 can either pre-input the size of the adhesive sheet AS into a control device (not shown), or use a cutting edge detection device such as a camera or projector, an optical sensor or an ultrasonic sensor, etc., to detect the size of the cutting edge 22A and input it into the control device (not shown) as the size of the adhesive sheet AS.

[0034] The sheet feeding device EA and the sheet adhesion device EA1 can also be provided downstream of the cutting device 20 in the roll extraction direction, for example, with a connecting belt passing device equivalent to the adjusting device 50. When the rotating motors 15A and 21 stop, the roll RS is pulled in the roll extraction direction and the connecting belt CT passes through the cut to form the position CP.

[0035] The roll material RS can be connected to the peeled sheet RL with a connecting tape (not shown), or it can be left unconnected.

[0036] like Figure 1D As shown, the connecting tape (not shown) for connecting the CT or the connecting release sheet RL can be used in a way that the width of the roll material in the pull-out direction is longer than the usual interval for forming the adhesive sheet AS. It can be used with one connecting adhesive sheet substrate AB and the release sheet RL, or multiple connecting adhesive sheet substrate AB and the release sheet RL. When using one connecting tape, it can be connected at any point in the width direction orthogonal to the roll material pull-out direction, such as the center, one end, or the other end. When using multiple connecting tapes, it can be connected at any point in the width direction, such as the center and three points at both ends, or two points at both ends.

[0037] Besides the ring frame RF, the frame component can also be a non-ring (without an outer perimeter connected) shape, circular, elliptical, polygonal, or other shapes.

[0038] There are no particular limitations on the materials, types, or shapes of the adhesive sheet substrate AB, adhesive sheet AS, connecting band CT, bonded body WK, and frame components. For example, the adhesive sheet substrate AB, adhesive sheet AS, connecting band CT, bonded body WK, and frame components can be circular, elliptical, triangular, quadrilateral, or other polygonal shapes. The adhesive sheet substrate AB can also be a pressure-sensitive adhesive, heat-sensitive adhesive, or other adhesive bonding method. When using a heat-sensitive adhesive sheet substrate AB, bonding can be performed using an appropriate method, such as providing a heating device for heating the adhesive sheet AS, such as a suitable coil heater or heating tube. Furthermore, the adhesive sheet substrate AB can be a single-layer structure with only an adhesive layer, a structure with an intermediate layer between the substrate and the adhesive layer, or a structure with three or more layers such as a cover layer on the upper surface of the substrate. It can even be a so-called double-sided adhesive sheet structure where the substrate can be peeled off from the adhesive layer. Double-sided adhesive sheets can also have a structure with one or more intermediate layers, or a structure with no intermediate layers. Additionally, the bonded object WK can be, for example, a single material such as food, resin containers, semiconductor wafers such as silicon semiconductor wafers and compound semiconductor wafers, circuit boards, information recording substrates such as optical discs, glass plates, steel plates, ceramics, wood boards, or resin, or a composite material formed from two or more of these materials. Any type of component or article can be used. It should be noted that the adhesive sheet AS can also be modified for different functions and uses, such as information recording labels, decorative labels, protective sheets, cut blue films, contact films, patch tapes, recording layer forming resin sheets, or any sheet, film, or tape.

[0039] The apparatus and processes in this invention are not limited in any way as long as they can perform the actions, functions, or processes described with respect to these apparatus and processes, and are not entirely limited to the components and processes of a single embodiment shown in the above embodiments. For example, the peeling device can be any device as long as it can peel the adhesive sheet from the peeling sheet and supply the adhesive sheet, and is not limited in any way as long as it is consistent with the technical common sense at the time of the application and within the scope of that technology (the same applies to other apparatus and processes).

[0040] The driving device in the above embodiments can be an electric device such as a rotary motor, a direct-drive motor, a linear motor, a single-axis manipulator, a multi-joint manipulator with two or more axes, a cylinder, a hydraulic cylinder, a rodless cylinder, or a rotary cylinder, etc., or it can be a combination of the above components directly or indirectly.

[0041] In the above embodiments, when a rotating component such as a roller is used, a drive device for rotating the rotating component can be provided. The surface of the rotating component or the rotating component itself can be made of a deformable component such as rubber or resin, or it can be made of a non-deformable component. Other components such as rotating or non-rotating shafts or plates can be used instead of rollers. When a pressing device or pressing component for pressing the object is used, the components shown in the examples above can be used in place of rollers, round bars, plates, and brush-like components. Components based on air or gas can be used for blowing, and the pressing component can be made of deformable components such as rubber, resin, or sponge, or it can be made of non-deformable components such as metal or resin. When a peeling device or peeling component for peeling the object is used, the components shown in the examples above can be used in place of rollers, round bars, plates, or brush-like components. The peeling component can be made of plate-shaped parts, round bars, rollers, etc., or deformable parts such as rubber or resin. It can also be made of non-deformable parts. When a support (holding) device or support (holding) component is used to support the supported part (held part), the structure can be made of a mechanical chuck or chuck cylinder, Coulomb force, adhesive (adhesive sheet, adhesive tape), adhesive (adhesive sheet, adhesive tape), magnetism, Bernoulli adsorption, attraction adsorption, drive equipment, etc. When a cutting device or cutting component is used to cut the part to be cut or to form a cut or cutting line on the part to be cut, the components in the above examples can be replaced or used in combination. The cutting can be done by using a cutting blade, laser cutter, ion beam, fire, heat, water pressure, electric heating wire, gas and liquid blowing, etc., or by moving the part to be cut by combining appropriate drive equipment.

Claims

1. A sheet feeding device, characterized in that, have: The extraction device extracts a roll of multiple adhesive sheet substrates connected by a connecting belt and temporarily attached to a peelable sheet. A cutting device that forms a closed-loop cut on the adhesive sheet substrate in the roll material extracted by the extraction device, and forms an adhesive sheet inside the cut. A peeling device that peels the adhesive sheet from the peeling sheet and supplies the adhesive sheet; A detection device that detects the connecting strip adhering to the surface of the adhesive sheet substrate while keeping the peeling sheet temporarily attached to the adhesive sheet substrate; The cutting device forms the cut in such a way that the connecting strip is not located inside the cut, based on the detection result of the detection device.

2. The sheet feeding device as described in claim 1, characterized in that, It has a connecting device that connects multiple adhesive sheet substrates via the connecting tape.

3. The sheet feeding device as described in claim 1 or 2, characterized in that, It is equipped with an adjustment device that adjusts the length of the roll material from the detection position of the detection device to the cut position of the cutting device to a predetermined length.

4. A method for supplying sheet material, characterized in that, The following procedures shall be performed: The extraction process involves extracting a roll of material formed by temporarily attaching multiple adhesive sheet substrates to a release sheet via a connecting tape. The cutting process involves forming a closed-loop cut on the adhesive sheet substrate of the roll material extracted by the extraction process, and forming an adhesive sheet inside the cut. The peeling process involves peeling the adhesive sheet from the peeling sheet and supplying the adhesive sheet. The inspection process involves inspecting the connecting strip adhered to the surface of the adhesive sheet substrate while the peeling sheet is temporarily attached to the adhesive sheet substrate. In the cutting process, based on the detection results of the detection process, the cut is formed such that the connecting strip is not located inside the cut.

Images