JP2021017332A - Tension application device and tension application method - Google Patents

Abstract

To provide a tension application device capable of preventing the extension or cutting of a long body as much as possible, and a tension application method.SOLUTION: A tension application device EA, which applies a predetermined tension to a long body RL intermittently recovered by recovery means 80, comprises: abutting means 50 that abuts on the long body RL so as to apply the predetermined tension to the long body RL by self-weight; movement permission means 60 for permitting free movement of the abutting means 50 to the side in one direction along a predetermined locus and the side in a direction opposite to it; and abutting assist means 70 for making the abutting means 50 abut on the long body RL only during a period when the long body RL is recovered by the recovery means 80.SELECTED DRAWING: Figure 1

Description

The present invention relates to a tension applying device and a tension applying method.

There is known a tension applying device that applies a predetermined tension to a long body that is intermittently collected by a collecting means (see, for example, Patent Document 1).

JP-A-2009-280316

However, in the conventional tension applying device as described in Patent Document 1, the dancer roller 22 (contact means) always abuts on the release sheet RL (long body) to apply tension to the long body. , The inconvenience that the long body is stretched or cut in some cases occurs.

An object of the present invention is to provide a tension applying device and a tension applying method capable of preventing a long body from being stretched or cut as much as possible.

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

According to the present invention, since the contacting means is brought into contact with the long body only during the period when the long body is collected by the collecting means, the contacting means is always in contact with the long body as in the conventional case. No tension is applied to the long body, and it is possible to prevent the long body from stretching or cutting as much as possible.
Further, if the free fall suppressing means is provided, a sudden impact from the contacting means is not applied to the long body, and the long body can be effectively prevented from being stretched or cut. ..
Further, if the tension reducing means is provided, the tension applied to the long body can be reduced, so that the long body can be more effectively prevented from being stretched or cut.

The explanatory view of the sheet sticking apparatus which adopted the tension applying apparatus which concerns on embodiment of this invention.

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, based on the case of viewing from the front direction in FIG. 1 parallel to the Y axis, when the direction is shown without specifying the figure, "up" is "down" in the direction of the arrow on the Z axis. Is the opposite direction, "left" is the arrow direction of 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 attaching device EA1 in which the tension applying device EA of the present invention is adopted is peeled by a support means 10 for supporting the original fabric RS in which the adhesive sheet AS is temporarily attached to the release sheet RL as a long body, and the release edge 20A. A release plate 20 as a release means for folding back the sheet RL and peeling the adhesive sheet AS from the release sheet RL, a pressing roller 30 as a pressing means for pressing and attaching the adhesive sheet AS to the adherend WK, and a release sheet. The sheet sticking device is provided with a carry-out giving means 40 for giving a carry-out output to the RL, a tension applying device EA for giving a predetermined tension to the peeling sheet RL, and a collecting means 80 for intermittently collecting the peeling sheet RL. It is arranged above the moving means 90 that moves the adherend WK relative to the EA1. The tension applying device EA applies a predetermined tension to the release sheet RL that is intermittently collected by the collecting means 80.

The support means 10 includes a support roller 11 for supporting the original fabric RS and a guide roller 12 for guiding the original fabric RS.

The carry-out power imparting means 40 includes a drive roller 42 supported by the output shaft 41A of the rotation motor 41 as a drive device, and a pinch roller 43 that sandwiches the release sheet RL between the drive rollers 42.

The tension applying device EA has a contact means 50 that abuts on the release sheet RL and applies a predetermined tension to the release sheet RL by its own weight, and one direction side (lower side) and the opposite direction side (lower side) along a predetermined track. The movement permitting means 60 that allows the free movement of the contacting means 50 to the upper side) and the contact assisting means that brings the contacting means 50 into contact with the peeling sheet RL only during the period when the peeling sheet RL is collected by the collecting means 80. It is equipped with 70.
The contacting means 50 includes a slider 51 whose trajectory is restricted by the movement allowing means 60, and a dancer roller 52 rotatably supported by the slider 51.
The movement permitting means 60 is a laser sensor that detects the positions of the two guide rollers 61, the rail 62 that regulates the trajectory of the contacting means 50 by allowing the slider 51 to move in the extending direction thereof, and the dancer roller 52. And the contact means detecting means 63 such as an ultrasonic sensor.
The contact assisting means 70 includes a linear motor 71 as a drive device, and a support arm 72 that is supported by the slider 71A and comes into contact with the lower side of the slider 51 to support the slider 51. In the case of the present embodiment, the linear motor 71 also serves as a free fall suppressing means for suppressing the free fall of the contact means 50 from the contact assisting means 70 and bringing the contact means 50 into contact with the release sheet RL. It is supposed to work.

The recovery means 80 includes a recovery roller 82 supported by an output shaft 81A of the rotary motor 81 as a drive device.

The moving means 90 includes a linear motor 91 as a drive device and a support table 92 supported by the slider 91A and capable of suction holding on the holding surface 92A by a decompression means (holding means) (not shown) such as a decompression pump or a vacuum ejector. It has.

The operation of the above sheet sticking device EA1 will be described.
First, with respect to the sheet sticking device EA1 in which each member is arranged at the initial position shown by the solid line in FIG. 1 (A), the user of the sheet sticking device EA1 (hereinafter, simply referred to as “user”) is as shown in the figure. After setting the original fabric RS in, a signal for starting automatic operation is input via an operation means (not shown) such as an operation panel or a personal computer. Then, the feeding output imparting means 40 drives the rotation motor 41 to feed the original fabric RS, and the tip portion of the leading adhesive sheet AS in the feeding direction of the release plate 20 is as shown by the solid line in FIG. 1 (A). When the peeling edge 20A is peeled off by a predetermined length, the drive of the rotary motor 41 is stopped. At this time, since the slider 51 is supported by the support arm 72 and the free movement of the abutting means 50 is restricted, when the original fabric RS is fed out as described above, the release sheet RL is shown in FIG. 1 (B). As shown by the alternate long and short dash line, the pinch roller 43 and the recovery roller 82 are in a loosened state.

After that, when the user or a transport means (not shown) such as an articulated robot or a belt conveyor places the adherend WK on the holding surface 92A as shown by the solid line in FIG. 1 (A), the moving means 90 is shown. The decompression means is driven so as to start adsorbing and holding the adherend WK on the holding surface 92A. Next, the moving means 90 drives the linear motor 91, the support table 92 is moved to the left, and when the adherend WK reaches a predetermined position, the feed feed giving means 40 drives the rotating motor 41. The original fabric RS is delivered according to the moving speed of the adherend WK. As a result, the adhesive sheet AS is peeled off from the release sheet RL, and the adhesive sheet AS peeled off from the release sheet RL is of the adherend WK by the pressing roller 30 as shown by the alternate long and short dash line in FIG. 1 (A). It is pressed and attached to the upper surface. Then, when the tip portion of the adhesive sheet AS next to the first adhesive sheet AS in the feeding direction is peeled off by the peeling edge 20A of the peeling plate 20 by a predetermined length, the feeding output imparting means 40 drives the rotary motor 41. Stop.

Next, when the support table 92 supporting the adherend WK to which the adhesive sheet AS is attached reaches a predetermined position on the left side of the pressing roller 30, the moving means 90 stops driving the linear motor 91, and then the pressure is reduced (not shown). The drive of the means is stopped, and the suction holding of the adherend WK on the holding surface 92A is released. After that, when the user or a transporting means (not shown) removes the adherend WK to which the adhesive sheet AS is attached from the support table 92 and transports it to the next step, the moving means 90 drives the linear motor 91. The support table 92 is returned to the initial position, and the same pasting operation as described above is repeated thereafter.

Here, the above-mentioned sticking operation is repeated, and a predetermined number of adhesive sheets AS are stuck to the adherend WK, and as shown by the solid line in FIG. 1 (B), between the pinch roller 43 and the recovery roller 82. When the slack of the release sheet RL becomes large, the contact assisting means 70 brings the dancer roller 52 into contact with the release sheet RL. In the case of the present embodiment, when the free fall suppressing means drives the linear motor 71 and the dancer roller 52 comes into contact with the release sheet RL as shown by the alternate long and short dash line in FIG. 1 (C), the dancer roller 52 suddenly causes the dancer roller 52. The contacting means 50 is lowered at a predetermined speed (not freely dropped) so that a large impact is not applied to the release sheet RL. Next, as shown by the solid line in FIG. 1C, when the dancer roller 52 is supported by the release sheet RL and the support arm 72 is separated from the slider 51, a predetermined tension is applied to the release sheet RL by the weight of the contact means 50. Granted. The release sheet RL that loosens between the pinch roller 43 and the recovery roller 82 has a drive roller 42 so that the dancer roller 52 is supported by the release sheet RL before the lower end of the slider 51 reaches the lower end of the rail 62. The rotation motor 41 measures the slack length via the rotation motor 41.

Then, when the support arm 72 separates from the slider 51 and reaches a predetermined position, the collection means 80 drives the rotation motor 81, and the release sheet RL is wound up by the collection roller 82 and collected. As a result, the release sheet RL is wound around the recovery roller 82 while a predetermined tension is applied by the weight of the contact means 50, and the contact means 50 is moved upward by this winding. Next, as shown in FIG. 1 (D), when the contact means detecting means 63 detects that the contact means 50 has returned to the initial position, the recovery means 80 stops driving the rotary motor 81, and then the contact means 80 stops driving. The contact assisting means 70 drives the linear motor 71 to return the support arm 72 to the initial position, and the support arm 72 supports the slider 51.

According to the above embodiment, the contacting means 50 is brought into contact with the peeling sheet RL only during the period when the peeling sheet RL is collected by the collecting means 80, so that the contacting means 50 always abuts as in the conventional case. No tension is applied to the release sheet RL in contact with the release sheet RL, and it is possible to prevent the release sheet RL from stretching or cutting as much as possible.

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 embodiments. It is not limited to the process at all. For example, if the abutting means abuts on a long body and can apply a predetermined tension to the long body by its own weight, it may be within the technical range in light of the common general technical knowledge at the time of filing. There is no limitation (the same applies to other means and processes).

In the support means 10, the strip-shaped adhesive sheet base material temporarily attached to the release sheet RL is formed with a closed loop shape or a notch in the entire short width direction, so that a predetermined area partitioned by the notch is formed in the adhesive sheet. It may be configured to support the raw fabric as AS, or the raw fabric in which the strip-shaped adhesive sheet base material is temporarily attached to the release sheet RL is adopted, and the strip-shaped adhesive sheet base material has a closed loop shape or the entire short width direction. The notch may be formed by a cutting means, and a predetermined region partitioned by the notch may be used as the adhesive sheet AS, or the strip-shaped adhesive sheet base material itself may support the original fabric as the adhesive sheet AS. Alternatively, instead of the rollers such as the support roller 11 and the guide roller 12, the original fabric RS and the release sheet RL may be supported or guided by a plate-shaped member, a shaft member, or the like, or wound. Without this, for example, the original fabric RS may be supported so that it can be pulled out from the original fabric RS folded in a fan fold, or the guide rollers 12 may be one body, three or more bodies, or may not be provided. ..

The pressing means is supported by the output shaft of a linear motor as a drive device, and the adhesive sheet AS is held by a holding member that can be attracted and held by a decompression means (not shown) such as a decompression pump or a vacuum ejector, and is held by the holding member. The adhesive sheet AS may be pressed against the adherend WK and attached.

For example, the carry-out power applying means 40 may grip the release sheet RL with a chuck cylinder as a drive device and move the chuck cylinder to give a carry-out power to the peel-off sheet RL, or may apply the adhesive sheet AS to the release sheet AS. When peeling from the RL, the rotational torque of the rotary motor 41 and the moving torque of the chuck cylinder holding the peeling sheet RL may be controlled so that a predetermined tension is applied to the raw fabric RS.

The contact means 50 may employ a plurality of sliders 51 or a plurality of dancer rollers 52. For example, the rail 62 is a linear rail (linear guide) or a spline shaft (ball spline shaft). ), A moving body dedicated to them may be adopted as the slider 51, and if the rail 62 is a slit formed in the base plate, a moving body moving along the slit may be adopted as the slider 51. Alternatively, the dancer roller 52 may move along a concave groove or a slit as a movement permitting means without adopting the slider 51, so that free movement along a predetermined track may be permitted. For example, a shaft material, a plate material, or the like may be used instead of the 52, or the slider 51 or the dancer roller 52 may be changed to a heavier one or a lighter one in order to increase or decrease the tension applied to the release sheet RL. It may be changed to, or a weight supporting means for supporting the weight may be adopted.

The movement allowable means 60 may or may not have one guide roller 61 or three or more guide rollers 61, may be provided with a plurality of rails 62, and may be linear or S-shaped as the rail 62. A curved shape such as a J-shape or a C-shape may be adopted, a predetermined orbit may be linear or curved, a predetermined orbit may be in the direction of gravity, or a predetermined direction of gravity may be used. As the abutting means detecting means 63, for example, an imaging means such as a camera or a projector, various sensors such as an optical sensor or an ultrasonic sensor, a photoelectric tube or a limit switch may be used. It may be adopted, or the contact means detecting means 63 may be one body or a plurality of bodies, and may not be provided. If the contact means detecting means 63 is not provided, for example, the collecting means 80 is predetermined. After the time is not collected, the collection means 80 collects the release sheet RL for a predetermined time, or after the release sheet RL is loosened by a predetermined length, the collection means 80 collects the release sheet RL by a predetermined length. It may be configured as follows.

In the contact assisting means 70, the dancer roller 52 is brought into contact with the peeling sheet RL when the feed-out assisting means 40 is applying the carry-out to the peeling sheet RL, or the carry-out feeding means 40 is to feed the peeling sheet RL. The dancer roller 52 may be brought into contact with the release sheet RL, or the dancer roller 52 may be supported by the support arm 72, for example, when a predetermined time has elapsed or a predetermined number of sheets ( The dancer roller 52 may be brought into contact with the release sheet RL after the adhesive sheet AS (one or more sheets) is attached to the adherend WK or the like.
The contact assisting means 70 has a configuration in which the contact means 50 is freely dropped to bring the dancer roller 52 into contact with the release sheet RL within a range in which the release sheet RL does not stretch or cut due to the free fall of the contact means 50. May be. In this case, for example, the support arm 72 may be slid to the right or rotated in the counterclockwise rotation direction from the state shown in FIG. 1 (B).

The recovery means 80 may, for example, grip the release sheet RL with a chuck cylinder as a drive device and move the chuck cylinder to collect the release sheet RL without winding the release sheet RL, or a fan fold. It may be folded or chopped with a shredder or the like for recovery, or the release sheet RL may be simply collected and collected without being wound or fanfolded.

The moving means 90 moves the support means 10 peeling means, the pressing means, the feed output applying means 40, the tension applying device EA, and the like without moving or moving the support table 92, and attaches the adhesive sheet AS to the adherend WK. May be affixed, or the holding surface 92A may not be able to be sucked and held.

In the free fall suppressing means, the lowering (moving) speed of the contacting means 50 when the dancer roller 52 is brought into contact with the release sheet RL may be arbitrarily determined by the user or may be set in advance.
The free fall suppressing means does not have to be composed of the linear motor 71. In this case, for example, the support arm 72 is slid to the right or rotated in the counterclockwise rotation direction from the state of FIG. 1 (B). At this time, a drive device different from the linear motor 71 that prevents the contact means 50 from freely falling is adopted, and the contact means 50 is specified so that a sudden impact from the contact means 50 is not applied to the release sheet RL. It may be lowered at the speed of.

The tension applying device EA of the present invention may include a tension reducing means for reducing the tension applied to the release sheet RL by the contact means 50. In this case, for example, the tension applying device EA can make the linear motor 71 function as the tension reducing means, and when the collecting means 80 drives the rotating motor 81 and collects the release sheet RL with the collecting roller 82, the said The tension reducing means may drive the linear motor 71, and the contacting means 50 may be lifted by the support arm 72 within a range in which the dancer roller 52 is not separated from the release sheet RL. At this time, a lifting force measuring means such as a load cell or a pressure sensor for measuring the force with which the support arm 72 lifts the contact means 50 is provided, and the tension applied to the release sheet RL based on the measurement result of the lifting force measuring means. May be controlled to drive the linear motor 71 so that
The tension reducing means does not have to be composed of the linear motor 71. In this case, for example, when the release sheet RL is collected by the collection roller 82, the contact means 50 is provided within a range in which the dancer roller 52 is not separated from the release sheet RL. A drive device different from the lifting linear motor 71 may be adopted.
The tension applying device EA of the present invention may constitute a feeding device that applies a predetermined tension to the release sheet RL by the supporting means 10 and the feeding output applying means 40, and feeds the peeling sheet RL. In addition to the device and the sheet pasting device EA1, for example, it may be used in other devices such as a sheet laminating device for laminating an adhesive sheet AS and a printing device for printing or applying on an adhesive sheet AS, and a feeding device or a sheet. It may be used alone without being used for the sticking device EA1 or other devices.
At least one of the support means 10, the peeling means, the pressing means, the feeding output applying means 40, the collecting means 80, the moving means 90, the free fall suppressing means and the tension reducing means is the tension applying device EA or the sheet sticking device of the present invention. It may or may not be provided in the EA1, and if it is not provided, it can be replaced by another device.

The long body is not limited to the release sheet RL, but any of the original fabric RS, strip-shaped adhesive sheet, paper, cloth, steel plate, belt, resin, wood board, thread, string, wire, wire, cord, tube, hose, etc. It may be something like.

The material, type, shape, etc. of the adhesive sheet AS and the adherend WK in the present invention are not particularly limited. For example, the adhesive sheet AS may have a circular shape, an elliptical shape, a polygonal shape such as a triangle or a quadrangular shape, or another shape, or may have an adhesive form such as pressure-sensitive adhesiveness or heat-sensitive adhesiveness. When a heat-sensitive adhesive sheet AS is adopted, it may be adhered by an appropriate method such as providing an appropriate coil heater for heating the adhesive sheet AS or a heating means such as a heating side of a heat pipe. Further, such an adhesive sheet AS has three layers, for example, a single layer having only an adhesive layer, an intermediate layer between a base material and an adhesive layer, and a cover layer on the upper surface of the base material. Further, it may be a so-called double-sided adhesive sheet capable of peeling the base material from the adhesive layer, and the double-sided adhesive sheet may have a single layer or a multi-layer intermediate layer. , It may be a single layer or a multi-layer 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 boards, information recording boards such as optical disks, glass plates, steel plates, pottery, wood boards or resins. It may be a single product or a composite product formed of two or more of them, and any form of a member or an article can be targeted. The adhesive sheet AS can be read in a functional and versatile manner, for example, an information description label, 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. Sheets, films, tapes, etc. may be used.

The drive device in the above embodiment is an electric device such as a rotary motor, a linear motor, a linear motor, a single-axis robot, an articulated robot having two or more axes of joints, an air cylinder, a hydraulic cylinder, and a rodless. Actuators such as cylinders and rotary cylinders can be adopted, and those in which they are directly or indirectly combined can also be adopted.
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 if a peeling means such as a peeling plate or a peeling roller or a peeling member that peels off an object to be peeled is adopted, it is illustrated above. A plate-shaped member, a round bar, a roller, or the like may be used in place of or in combination with the material, or the material to be peeled off may be made of a deformable member such as rubber or resin, or may be deformed. It may be composed of members that do not, or when a member that supports (holds) a supported member (held member) such as a supporting (holding) means or a supporting (holding) member is adopted, a mechanical chuck or a chuck cylinder. Such as gripping means, Coulomb force, adhesive (adhesive sheet, adhesive tape), adhesive (adhesive sheet, adhesive tape), magnetic force, Bernoulli suction, suction suction, drive equipment, etc. to support (hold) the supported member. Is used, 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, instead of the one illustrated above. Alternatively, use a cutter blade, laser cutter, ion beam, thermal power, heat, water pressure, heating wire, spraying of gas or liquid, etc. to cut, or use a combination of appropriate drive equipment to cut. You may move what you want to do and cut it.

EA Tension Applying Device 50 Abutment Means 60 Movement Allowance Means 70 Abutment Auxiliary Means 71 Linear Motor (Free Fall Suppression Means)
80 Recovery means RL peeling sheet (long body)

Claims (4)

A tension applying device that applies a predetermined tension to a long body that is intermittently collected by a collecting means.
A contact means that abuts on the long body and applies a predetermined tension to the long body by its own weight.
A movement permitting means that allows the free movement of the abutting means to one direction side and the opposite direction side along a predetermined trajectory, and
A tension applying device comprising a contact assisting means for bringing the contact means into contact with the long body only during a period in which the long body is collected by the recovery means. The first aspect of the present invention, wherein the free fall suppressing means for suppressing the free fall of the contacting means from the contact assisting means and bringing the contacting means into contact with the long body is provided. Tensioning device. The tension applying device according to claim 1 or 2, wherein the tension reducing means for reducing the tension applied to the long body by the contacting means is provided. It is a tension applying method that applies a predetermined tension to a long body that is intermittently collected in the recovery process.
A contact step in which a contact means for applying a predetermined tension to the long body by its own weight is brought into contact with the long body.
A movement permitting step that allows free movement of the abutting means to one direction side and the opposite direction side along a predetermined trajectory, and
A method for applying tension, characterized in that a contact assisting step of bringing the contact means into contact with the long body is performed only during the period in which the long body is recovered in the recovery step.