Sheet supply device and sheet supply method

Abstract

To provide a sheet feeding device prevented in feeding an adhesive sheet having holding trace, and a sheet feeding method.SOLUTION: A sheet feeding device EA has delivering means 10 performing a delivering operation of holding raw fabric RS with holding means 14, temporally fitted with an adhesive sheet AS with a prescribed gap from a peeling sheet RL and delivering the raw fabric RS, and stopping delivering operation of the raw fabric RS; and peeling means 20 peeling the adhesive sheet AS from the peeling sheet RL during delivering operation of the raw fabric RS and supplying. The delivering means 10 moves the raw fabric to prevent holding of the adhesive sheet AS by holding means 14 during delivery-stopping of the raw fabric RS.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a sheet feeding apparatus and a sheet feeding method.

Background Art

[0002] There has been known a sheet feeding apparatus that feeds out an original web having an adhesive sheet temporarily attached to a release sheet, peels the adhesive sheet from the release sheet, and supplies the peeled adhesive sheet (see, for example, Patent Document 1).

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] In the pasting apparatus 1 (sheet feeding apparatus) described in Patent Document 1, while the feeding of the belt-shaped material M (original web) on which a protective sheet BG (adhesive sheet) is formed is stopped, the adhesive sheet is held in a sandwiched state between a tension roller 41 and a guide roller 42 (sandwiching means). Therefore, the sandwiched portion of the adhesive sheet leaves a mark, which causes the disadvantage that an adhesive sheet with a sandwiching mark formed thereon is supplied.

[0005] An object of the present invention is to provide a sheet feeding apparatus and a sheet feeding method that can prevent supply of an adhesive sheet with a sandwiching mark formed thereon.

Means for Solving the Problem

[0006] The present invention employs the configuration recited in the claims.

Effect of the Invention

[0007] According to the present invention, the raw material is moved in such a way that the adhesive sheet does not become trapped in the clamping mechanism while the raw material is stopped from being fed out, thus preventing the supply of adhesive sheets with clamping marks formed on them. [Brief explanation of the drawing]

[0008] [Figure 1] An explanatory diagram of a sheet application device equipped with a sheet supply device according to one embodiment of the present invention. [Modes for carrying out the invention]

[0009] One embodiment of the present invention will be described below with reference to the drawings. In this embodiment, the X, Y, and Z axes are orthogonal to each other. The X and Y axes are axes within a predetermined plane, and the Z axis is an axis perpendicular to the predetermined plane. Furthermore, in this embodiment, when directions are indicated based on a view from the front direction in Figure 1(A) parallel to the Y axis, "up" is the direction of the Z-axis arrow and "down" is the opposite direction, "left" is the direction of the X-axis arrow and "right" is the opposite direction, "front" is the front direction in Figure 1(A) parallel to the Y axis and "back" is the opposite direction.

[0010] The sheet supply device EA includes a feeding means 10 that performs a feeding process of feeding out a raw roll RS on which adhesive sheets AS are temporarily attached to a release sheet RL at predetermined intervals, and a release plate 20 that performs a peeling process of peeling the adhesive sheets AS from the release sheet RL and supplying them. The sheet supply device EA also includes a pressing roller 30 that serves as a pressing means for pressing and attaching the adhesive sheets AS to the adherend WK, and the sheet application device EA1 is configured with the support means 40 that supports the adherend WK.

[0011] The feeding mechanism 10 includes a base plate 11 that directly or indirectly supports the components constituting the feeding mechanism 10, a support roller 12 that supports the raw material RS, a guide roller 13 that guides the raw material RS, a clamping mechanism 14 that clamps the raw material RS, a drive roller 15 supported on the output shaft (not shown) of a rotary motor 15A as a drive device, which clamps the release sheet RL with the pinch roller 15B, and a recovery roller 16 supported on the output shaft of a drive device (not shown), which constantly applies a predetermined tension to the release sheet RL between itself and the pinch roller 15B while the sheet application device EA1 is in automatic operation, and is configured to move the raw material RS so that the adhesive sheet AS is not clamped by the clamping mechanism 14 while the raw material RS is stopped from being fed out. The clamping mechanism 14 includes a rotating motor 14A as a drive device and a drive roller 14B supported on an output shaft (not shown) of the rotating motor 14A, which clamps the raw material RS with a pinch roller 14C.

[0012] The support means 40 includes a linear motor 41 as a drive device and a table 42 supported by a slider 41A of the linear motor 41, which has a support surface 42A that can be held by suction using a depressurizing means (holding means) not shown, such as a depressurizing pump or a vacuum ejector.

[0013] The operation of the sheet application device EA1, which is equipped with the sheet supply device EA described above, will now be explained. First, the user of the sheet application device EA1 (hereinafter simply referred to as "user") sets the raw material RS as shown in the Figure 1(A), with each component positioned in the initial position shown by the solid line in the Figure 1(A). Then, a signal to start automatic operation is input via an operating means (not shown), such as an operation panel or a personal computer. The feeding means 10 then drives the rotary motors 14A and 15A to feed out the raw material RS. As shown in Figure 1(A), when the leading edge of the adhesive sheet AS reaches a predetermined position upstream of the clamping means 14 in the feeding direction, the driving of the rotary motors 14A and 15A is stopped, and the feeding of the raw material RS is stopped.

[0014] Next, when a user or a transport means (not shown) such as an articulated robot or a belt conveyor places the object to be adhered WK at a predetermined position on the support surface 42A, the support means 40 drives a pressure reducing means (not shown) to start adsorbing and holding the object to be adhered WK on the support surface 42A. Subsequently, the support means 40 drives a linear motor 41 to move the table 42 to the left, and when the table 42 reaches a predetermined position, the feed means 10 drives rotary motors 14A and 15A to feed out the raw material RS in accordance with the movement speed of the table 42. As a result, the leading adhesive sheet AS is peeled off from the release sheet RL by the release edge 20A of the release plate 20, and the adhesive sheet AS peeled off from the release sheet RL is pressed and attached to the object to be adhered WK by the pressure roller 30, as shown by the dashed line in Figure 1(A).

[0015] When the entire adhesive sheet AS is attached to the adherend WK, the feeding means 10 stops driving the rotary motors 14A and 15A, and stops feeding out the raw material RS. At this time of feeding stop, as shown in Figure 1(B), if the next adhesive sheet AS following the leading adhesive sheet AS is held in place by the clamping means 14, the feeding means 10 drives the rotary motors 14A and 15A to move the raw material RS in the opposite direction of feeding. Next, as shown in Figure 1(A), when the leading edge of the next adhesive sheet AS in the feeding direction reaches a predetermined position upstream of the clamping means 14 in the feeding direction, the feeding means 10 stops driving the rotary motors 14A and 15A, and stops feeding out the raw material RS. Then, when the table 42 reaches a predetermined position to the left of the pressing roller 30, the support means 40 stops driving the linear motor 41, then stops driving the depressurizing means (not shown), and releases the suction holding of the adherend WK on the support surface 42A. Next, when the user or a transport means (not shown) transports the object WK to which the adhesive sheet AS is attached to the next process, the support means 40 drives the linear motor 41 to return the table 42 to its initial position, and the same operation as described above is repeated thereafter.

[0016] According to the above embodiment, the raw material RS is moved in such a way that the adhesive sheet AS does not become trapped in the trapping means 14 while the raw material RS is stopped from being fed out, thus preventing the supply of adhesive sheets AS with trapping marks formed on them.

[0017] As described above, the best configurations, methods, etc., for carrying out the present invention are disclosed in the above description, but the present invention is not limited thereto. That is, although the present invention is mainly illustrated and described in relation to specific 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 scope of the technical idea and objectives of the present invention. Furthermore, the descriptions of shapes, materials, etc. disclosed above are illustrative to facilitate understanding of the present invention and do not limit the present invention, so descriptions of components with some or all of those limitations removed are included in the present invention.

[0018] For example, the feeding means 10 may move the raw material RS in the feeding direction to prevent the adhesive sheet AS from being held in the clamping means 14 while the feeding of the raw material RS is stopped. Alternatively, if, while the feeding of the raw material RS is stopped, any of the adhesive sheets AS following the first adhesive sheet AS are held in the clamping means 14, the feeding means 10 may prevent the adhesive sheet AS from being held in the clamping means 14 while the feeding of the raw material RS is stopped by holding the raw material RS within a predetermined interval between any two adhesive sheets AS thereafter. Alternatively, if, while the feeding of the raw material RS is stopped, the next adhesive sheet AS or any of the adhesive sheets AS thereafter are not held in the clamping means 14, the raw material RS does not need to be moved. A raw material roll in which a closed loop shape or a cut along the entire width direction is formed in a strip-shaped adhesive sheet substrate, and a predetermined area partitioned by the cut is designated as an adhesive sheet AS, may be fed out. Alternatively, an adhesive sheet raw material roll in which a strip-shaped adhesive sheet substrate is temporarily attached to a strip-shaped release sheet RL may be used, and while the strip-shaped adhesive sheet raw material roll is being fed out, a closed loop shape or a cut along the entire width direction is formed in the adhesive sheet substrate with a cutting blade as a cutting means, and a raw material roll in which a predetermined area partitioned by the cut is designated as an adhesive sheet AS may be fed out. Alternatively, the raw material roll RS may be fed out from a raw material roll RS that has been fan-folded, for example, without winding, or a recovery means may be employed to recover the release sheet RL by fan-folding it, shredding it with a shredder, or simply accumulating it, without winding, or no recovery means may be employed at all. The nipping means 14 does not need to include a drive device for driving the drive roller 14B. Instead of or in combination with the drive roller 14B, it may be configured by, for example, a drive pulley supported on the output shaft of the rotation motor 14A, a rotatable driven pulley, a belt wound around these pulleys, and a pinch roller 14C that nips the raw fabric RS between the belt and itself; it may also be configured to nip the raw fabric RS by a gripping means such as a mechanical chuck or a chuck cylinder; the speed and tension of the unreeled raw fabric RS may be controlled by the drive roller 14B, the belt, the gripping means or the like to perform tension control that applies a predetermined tension to the raw fabric RS or does not apply tension thereto, and the tension control may also prevent slack in the raw fabric RS.

[0019] The pressing means may include a linear motion motor as a drive device and a holding member supported on the output shaft of the linear motion motor, the holding member being capable of suction and holding by a pressure reducing means (not illustrated) such as a decompression pump or a vacuum ejector, and may adopt a configuration in which the adhesive sheet AS held by the holding member is pressed against an adherend WK to be attached thereto; it may also be arranged upside down or horizontally together with the unreeling means 10 and the peeling plate 20, and configured to press the adhesive sheet AS against the lower surface, side surface or the like of the adherend WK for attachment; a drive device may be adopted as a pressing member attaching / detaching means that moves the pressing roller 30 toward and away from the adherend WK to prevent the adherend WK from being stressed or damaged; the pressing means may or may not be provided in the sheet supply device EA or the sheet attaching device EA1 of the present invention, and when it is not provided, the adhesive sheet AS may be pressed against the adherend WK and attached by another device.

[0020] The supporting means 40 may or may not be provided in the sheet supply device EA or the sheet attaching device EA1 of the present invention, and when it is not provided, the adherend WK may be moved by another device.

[0021] The sheet supply device EA may supply the adhesive sheet AS peeled off from the release sheet RL to means other than the pressing means, for example, a printing device that prints on the adhesive sheet AS, an inspection device that checks the condition of the adhesive sheet AS, or the user.

[0022] The material, type, shape, etc., of the adhesive sheet AS and the adherend WK are not particularly limited. For example, the adhesive sheet AS and adherend WK may be circular, elliptical, polygonal (triangle, square, etc.), or have other shapes. The adhesive sheet AS may also have pressure-sensitive or heat-sensitive adhesive properties. If a heat-sensitive adhesive sheet AS is used, it can be bonded by an appropriate method, such as providing a suitable heating means, such as a suitable coil heater or the heating side of a heat pipe, to heat the adhesive sheet AS. Furthermore, such an adhesive sheet AS may be any type, such as a single layer of adhesive only, a two-layer sheet with a substrate and an adhesive layer laminated together, a three-layer or three-or-more-layer sheet with one or more intermediate layers laminated between the substrate and the adhesive layer, a three-layer or three-or-more-layer sheet with one or more cover layers laminated on the upper surface of the substrate, a sheet in which the substrate, intermediate layer, or cover layer is peelably provided, a single-layer double-sided adhesive sheet consisting only of an adhesive layer, or a double-sided adhesive sheet with adhesive layers laminated on both outermost surfaces of one or more intermediate layers. Furthermore, the adherend WK may be a single object such as food, a resin container, a semiconductor wafer such as a silicon semiconductor wafer or a compound semiconductor wafer, a circuit board, an information recording substrate such as an optical disc, a glass plate, a steel plate, a ceramic, a wooden board, or a resin, or it may be a composite object formed from two or more of these, and any form of component or article can also be included. Note that the adhesive sheet AS may be replaced with any sheet, film, tape, etc., such as an information label, decorative label, protective sheet, dicing tape, die attach film, die bonding tape, or recording layer forming resin sheet, based on its functional or functional reading.

[0023] 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 for said means and steps, much less are they limited in any way to only the structures and steps of the embodiment shown in the foregoing embodiment. For example, the peeling means may be any means that peels the adhesive sheet from the release sheet and supplies the same during the unwinding operation of the original web, and is not limited in any way as long as it falls within the technical scope in light of common general technical knowledge at the time of filing of the application (the same applies to other means and steps).

[0024] As the driving device in the above embodiment, electric devices such as rotation motors, linear motion motors, linear motors, single-axis robots, articulated robots having two or more joints of three or more axes, and actuators such as air cylinders, hydraulic cylinders, rodless cylinders, and rotary cylinders may be employed, and a combination of these directly or indirectly may also be employed. In the above embodiment, if a rotating member such as a roller is used, a drive device for rotating the rotating member may be provided, the surface of the rotating member or the rotating member itself may be made of a deformable material such as rubber or resin, the surface of the rotating member or the rotating member itself may be made of a non-deformable material, other members such as rotating or non-rotating shafts or blades may be used instead of rollers, and if a means or member for pressing the object to be pressed, such as a pressing roller or pressing head, is used, in addition to the examples given above, a means of blowing gas such as air or gas may be used, in addition to rollers, round bars, blade materials, brush-like members, or a means of blowing gas may be used, and the pressing material may be made of a deformable material such as rubber, resin, or sponge, or it may be made of a non-deformable material such as metal or resin, and if a means or member for peeling the object to be peeled, such as a peeling plate or peeling roller, is used, in addition to the examples given above, In combination, plate-shaped members, round bars, rollers, and other members may be used, the material to be peeled off may be made of a deformable material such as rubber or resin, or a non-deformable material, and if a support (holding) means or support (holding) member or other means for supporting (holding) the supported member (held member) is used, a configuration in which the supported member is supported (held) by gripping means such as mechanical chucks or chuck cylinders, Coulomb force, adhesive (adhesive sheets, adhesive tapes), adhesive agents (adhesive sheets, adhesive tapes), magnetic force, Bernoulli adsorption, suction adsorption, drive equipment, etc. may be used, and if a cutting means or cutting member or other means for cutting the member to be cut or forming cuts or cutting lines in the member to be cut is used, instead of or in combination with the examples above, a cutter blade, laser cutter, ion beam, thermal power, heat, water pressure, electric heating wire, spraying of gas or liquid, etc. may be used, or the material to be cut may be moved by combining appropriate drive equipment to perform the cutting. [Explanation of Symbols]

[0025] EA... Sheet supply device 10… Dispensing mechanism 14…Means of clamping 20...Release plate (release means) AS...Adhesive sheet RL...Release sheet RS…Raw fabric WK...Adherend

Claims

1. A dispensing means for dispensing a roll of material in which adhesive sheets are temporarily attached to a release sheet at predetermined intervals, The system includes a peeling means for peeling and supplying the adhesive sheet from the release sheet, The sheet supply device is characterized in that the feeding means includes a clamping means for clamping the raw material, and performs a feeding operation to feed out the raw material and a feeding stop operation to stop the feeding out of the raw material, and moves the raw material so that the adhesive sheet does not become clamped by the clamping means while the raw material is being fed out.

2. A feeding process in which a roll of material with adhesive sheets temporarily attached to a release sheet at predetermined intervals is fed out, A peeling step is performed in which the adhesive sheet is peeled off from the release sheet and supplied. The sheet supply method is characterized in that, in the feeding step, the raw material is gripped by a gripping means, a feeding operation is performed to feed out the raw material, and a feeding stop operation is performed to stop the feeding of the raw material, and the raw material is moved so that the adhesive sheet is not gripped by the gripping means while the raw material is being fed.

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