JP2024104606A - Protective material peeling device and protective material peeling method - Google Patents

Abstract

A protective material removing device and a protective material removing method are provided for removing a sheet-like or film-like protective material attached to a plate-like member.
[Solution] The protective material P peeling device 10 is a protective material P peeling device that peels off the protective material P attached to a plate-shaped member AR, and is equipped with a protrusion forming member on which a protruding protrusion 404 is formed, a feed mechanism 20 that transports the adhesive tape TP to which the plate-shaped member AR is attached via the protective material P along a predetermined transport path, and a first roller 60 that contacts the surface of the plate-shaped member AR opposite to the surface to which the protective material P is attached, and presses the adhesive tape TP to which the plate-shaped member AR is attached against the protrusion 404.
[Selected Figure] Figure 1

Description

The present invention relates to a protective material peeling device and a protective material peeling method.

Patent Document 1 describes a method for peeling a protective sheet for a thin plate, which is used in an apparatus that peels a protective sheet from a thin plate by pressing and adhering a long, tensioned adhesive tape to the surface of the protective sheet, which is attached to the thin plate and has the same shape as the plate, while pulling it up. This peeling method is characterized in that the initial lifting location of the adhesive tape that is pressed and adhered is one of the vertices of the protective sheet.

Patent Document 2 describes a protective sheet peeling device that peels off a protective sheet from a flat part to which the protective sheet is attached. This protective sheet peeling device is equipped with an adhesive tape that moves with the adhesive side facing up, a beating arm with a beating plate that intermittently beats up the underside of the adhesive tape, and a cam portion that drives the beating arm. The device is characterized in that it places a flat part with the protective sheet facing down on the adhesive tape, moves together with the adhesive tape, intermittently beats the protective sheet from below via the adhesive tape with the beating plate of the beating arm to adhere the protective sheet to the adhesive tape, and peels off the protective sheet from the flat part when it is discharged.

Japanese Patent Application Publication No. 9-114384 JP 2021-84787 A

The present invention aims to provide a protective material peeling device and a protective material peeling method for peeling off a sheet-like or film-like protective material attached to a plate-like member.

The invention described in claim 1 is a protective material peeling device that peels off a sheet-like or film-like protective material attached to a plate-like member, and is equipped with a protrusion forming member on which a protruding protrusion is formed, a feed mechanism that transports the adhesive tape attached to the plate-like member via the protective material along a predetermined transport path, and a first roller that contacts the surface of the plate-like member opposite to the surface on which the protective material is attached and presses the adhesive tape attached to the plate-like member against the protrusion.

The invention described in claim 2 is the protective material peeling device described in claim 1, in which the first roller presses the front end of the plate-like member against the protruding portion.

The invention described in claim 3 is the protective material peeling device described in claim 2, further comprising a supply unit that holds a plurality of the plate-like members in a vertically stacked manner.

The invention described in claim 4 is the protective material peeling device described in claim 3, in which the conveying path passes under the plate-like member that is in the lowest position held by the supply unit, and the plate-like member comes into contact with the adhesive surface of the adhesive tape.

The invention described in claim 5 is the protective material peeling device described in claim 4, further comprising a second roller disposed downstream in the conveying direction of the supply section and upstream in the conveying direction of the first roller, which presses the protective material against the adhesive surface of the adhesive tape.

The invention described in claim 6 is the protective material peeling device described in claim 5, in which the feed mechanism has a transport roller that feeds the adhesive tape.

The invention described in claim 7 is a method for peeling off a protective material using the protective material peeling device described in claim 1, which includes a step in which the feed mechanism feeds the adhesive tape, a step in which the plate-like member transported together with the adhesive tape is pressed against the protruding portion by the first roller, and a step in which the protective material is peeled off.

The present invention provides a protective material peeling device and a protective material peeling method for peeling off a sheet-like or film-like protective material attached to a plate-like member.

1 is an external view of a protective sheet peeling device according to an embodiment of the present invention. FIG. 2 is a front view of the protective sheet peeling device. 3 is an explanatory diagram illustrating an acrylic resin plate and an adhesive tape in a supply unit included in the protective sheet peeling device. FIG. FIG. 11 is an explanatory diagram (part 1) showing the operation of the protective sheet peeling device, and is an enlarged front view of the periphery of a protrusion-forming member. FIG. 11 is an explanatory diagram (part 2) showing the operation of the protective sheet peeling device, and is an enlarged front view of the periphery of the protrusion-forming member. FIG. 11 is an explanatory diagram (part 3) showing the operation of the protective sheet peeling device, and is an enlarged front view of the periphery of the protrusion-forming member. FIG. 11 is an explanatory diagram (part 4) showing the operation of the protective sheet peeling device, and is an enlarged front view of the periphery of the protrusion-forming member. FIG. 5 is an explanatory diagram (part 5) showing the operation of the protective sheet peeling device, and is an enlarged front view of the periphery of the protrusion-forming member.

Next, with reference to the attached drawings, an embodiment of the present invention will be described to facilitate understanding of the present invention. Note that parts that are not relevant to the description may be omitted from the illustrations.

A protective sheet P peeling device 10 (see Figure 1) according to one embodiment of the present invention is capable of peeling off a protective sheet P attached to an acrylic resin plate (an example of a plate-like member) AR using an adhesive tape TP, and discharging the acrylic resin plate AR from which the protective sheet P has been peeled off.
The thickness of the acrylic resin plate AR is, for example, 1.0 to 5.0 mm.
The protective sheet (sheet-like protective material) P is, for example, a paper sheet. Instead of the protective sheet P, a protective film (film-like protective material) may be used, and any sheet-like or film-like protective material for protecting the surface of the plate-like member may be used.

As shown in FIG. 2, the protective sheet P peeling device 10 (hereinafter simply referred to as "peeling device 10") includes a feed mechanism 20, a supply unit 30, a protrusion forming member 40, a roller 50, a roller 60, a roller 70, and a control unit 80.

The feed mechanism 20 has a supply reel 202, a driven roller 204 (see FIG. 3), transport rollers 206a, 206b, and a take-up reel 208, and can feed the adhesive tape TP having the acrylic resin plate AR attached thereto via the protective sheet P in one direction and transport it along a predetermined transport path.

2, the supply reel 202 can hold the adhesive tape TP wound in a roll shape. The width of the adhesive tape TP is greater than the width of the acrylic resin sheet AR.
As shown in FIG. 3 , the driven roller 204 is provided below the supply unit 30 and is capable of changing the feed direction of the adhesive tape TP pulled out from the supply reel 202 .

The transport rollers 206a and 206b (see FIG. 2) can feed the adhesive tape TP with the protective sheet P attached thereto by sandwiching it between them. The transport roller 206a is driven at a predetermined rotation speed by a feed motor (not shown). The feed motor is, for example, a pulse motor.

The take-up reel 208 can take up the adhesive tape TP, which is fed from the supply reel 202 and has the protective sheet P attached thereto. The take-up reel 208 is driven by a torque-controlled take-up motor (not shown). Thus, the adhesive tape TP is taken up while being controlled so that the tension is within a preset range. The take-up motor is, for example, a servo motor.
The feed mechanism 20 may be driven manually instead of by a motor.
The transport path of the adhesive tape TP fed by the feed mechanism 20 will be described later.

As shown in FIG. 1, the supply unit 30 is provided on a steel base member 102 and can hold multiple acrylic resin plates AR with protective sheets P stacked vertically. Each acrylic resin plate AR is held with the protective sheet P facing down.

The supply unit 30 includes a stopper member 302 and a holder 304 .
The abutment member 302 is an angle-shaped member extending in the vertical direction, and abuts against the acrylic resin plate AR at two different points in plan view.
The holder 304 is composed of at least an angled rod-shaped member 306 extending in the vertical direction, and a magnet holder base 308 to which the rod-shaped member 306 is fixed. The magnet holder base 308 can generate a magnetic force by manually rotating a lever 310, and can be easily attached to and detached from the base member 102.

In the supply section 30, the size of the space formed between the abutment member 302 and the holder 304 is adjusted by adjusting the position of the holder 304 relative to the abutment member 302 according to the shape of the acrylic resin plate AR with protective sheet P, and acrylic resin plates with protective sheets of any size are stacked and held.

As shown in FIG. 4, the protrusion forming member 40 is a member fixed to the upper surface of the base member 102. The protrusion forming member 40 has a receiving portion 402, a first protrusion 404, and a second protrusion 406, and the widths of the receiving portion 402, the first protrusion 404, and the second protrusion 406 are each greater than the width of the adhesive tape TP, and come into contact with the non-adhesive surface of the adhesive tape TP (the surface opposite the adhesive surface).

The receiving portion 402 has a horizontal surface formed thereon, which serves as a receiving surface for the roller 50 to press the acrylic resin plate AR with protective sheet P against the adhesive tape TP. Note that the "horizontal surface" referred to here is not a horizontal surface in the strict sense of the word. In other words, the "horizontal surface" means a "substantially horizontal surface" that allows for design and manufacturing errors (same below). Specifically, for example, the surface may be within the range of -5 degrees to +5 degrees with respect to the horizontal line.

The first protrusion 404 protrudes above the receiving portion 402, and when viewed from the front, a curved surface is formed on the upstream side of the transport direction of the adhesive tape TP, and a substantially vertical surface is formed downstream of the top in the transport direction. In other words, when viewed from the front, the first protrusion 404 gradually becomes taller from the upstream side to the downstream side in the transport direction, and has a cut-off shape at the top. It is preferable that the degree of change in height gradually decreases toward the downstream side in the transport direction.

The second protruding portion 406 protrudes at a position lower than the first protruding portion 404 in the direction in which the acrylic resin plate AR from which the protective sheet P has been peeled off is discharged, and has a curved tip.
The second protruding portion 406 can change the orientation of the adhesive tape TP with the peeled-off protective sheet P attached thereto.

The roller (an example of a second roller) 50 comes into contact with the surface of the acrylic resin plate AR opposite to the surface to which the protective sheet P is attached, and can press the protective sheet P against the adhesive surface of the adhesive tape TP.
The roller 50 is disposed on the downstream side of the supply unit 30 in the conveying direction and on the upstream side of the roller 60 in the conveying direction when viewed from the front, and is provided on a roller holding member 502. The roller holding member 502 can rotate around a rotation axis AX extending in the horizontal direction (see arrow R1 in FIG. 4), and one end of a first tension coil spring 504 is attached to a hole H502 formed at a position away from the rotation axis AX when viewed from the front. A force is applied to the roller 50 in a direction pressing it against the receiving portion 402 by the action of this first tension coil spring 504.
In each of the drawings, the upper portion of the first tension coil spring 504 is omitted, and only the lower portion is shown.

Therefore, when the acrylic resin plate AR with the protective sheet P attached thereto passes between the roller 50 and the receiving portion 402, the roller 50 moves up and down as the acrylic resin plate AR with the protective sheet P attached thereto passes.
Here, depending on the configuration of the peeling device 10, if the roller 50 is not provided, a phenomenon may occur in which the adhesive tape TP is conveyed in a meandering manner and becomes tangled. The roller 50 suppresses such a phenomenon.

The roller (an example of a first roller) 60 comes into contact with the surface of the acrylic resin plate AR opposite to the surface to which the protective sheet P is attached, and can press the adhesive tape TP with the acrylic resin plate AR with protective sheet P attached against the first protrusion 404.
The roller 60 is disposed above the first protrusion 404 and downstream of the roller 50 in the conveying direction when viewed from the front, and is provided on a roller holding member 602. The roller holding member 602 can rotate about a rotation axis AX extending in the horizontal direction (see arrow R2 in FIG. 4), and one end of a second tension coil spring 604 is attached to a hole H602 formed at a position away from the rotation axis AX when viewed from the front. A force is applied to the roller 60 in a direction pressing it against the first protrusion 404 by the action of the second tension coil spring 604.
In each of the drawings, the upper portion of the second tension coil spring 604 is omitted, and only the lower portion is shown.

Therefore, when the acrylic resin plate AR with the protective sheet P passes between the roller 60 and the first protrusion 404, the roller 60 moves up and down as the acrylic resin plate AR with the protective sheet P passes.

The rollers 70 can guide the acrylic resin sheet AR from which the protective sheet P has been peeled off. The acrylic resin sheet AR guided by the rollers 70 is discharged in the direction of the arrow X shown in FIG.
The roller 70 is disposed on the opposite side of the roller 60 from the roller 50 in plan view, and is provided on a roller holding member 602 shared with the roller 60 as shown in FIG.
Therefore, the roller 70 moves in conjunction with the movement of the roller 60 .

The control unit 80 is a drive device for supplying drive current to a feed motor (not shown) that drives the transport roller 206a and a take-up motor (not shown) that drives the take-up reel 208, and a control device for controlling the drive device. These drive devices and control devices are housed in a housing 802, as shown in Figures 1 and 2.

The main body of a feed motor (not shown) and a winding motor (not shown) are also housed inside the housing 802, and the rotating shafts of the winding motor and the feed motor are each arranged to protrude from the surface of the housing 802 toward the front side.
As shown in FIG. 1, a base member 102 is fixed to the front side of the upper surface of the housing 802 so as to protrude toward the front side.

In the peeling device 10, the adhesive tape TP is fed through the transport path described below.
First, as shown in FIG. 2 , the adhesive tape TP pulled out from the supply reel 202 is pulled by the transport rollers 206 a, 206 b with the adhesive surface facing up, toward the lower side of the supply section 30, and is fed horizontally by the driven roller 204 below the supply section 30.
That is, the adhesive tape TP passes under the acrylic resin plate AR with protective sheet P that is in the lowest position held by the supply unit 30, and a portion of the acrylic resin plate AR with protective sheet P comes into contact with the adhesive surface of the adhesive tape TP.

Next, as shown in FIG. 4, the adhesive tape TP sent horizontally passes through a position (position A) between the roller 50 and the receiving portion 402, passes through a position (position B higher than position A) between the roller 60 and the first protrusion 404, and then changes direction at a position (position C higher than position A and lower than position B) where the second protrusion 406 is located, and is sent diagonally downward. In addition, when the feeding direction changes at position C, the adhesive surface of the adhesive tape TP becomes downward.

Finally, the adhesive tape TP that has been sent diagonally downward passes between transport rollers 206a and 206b, as shown in FIG. 2, and is wound onto a winding reel 208 that is driven by a winding motor (not shown).

Next, the operation of the peeling device 10 (a method for peeling off the protective sheet P) will be described with reference to FIGS.
The peeling device 10 operates in accordance with the following steps S1 to S7.

(Step S1)
A roll of adhesive tape TP is held on a supply reel 202 of the peeling device 10, and the adhesive tape TP unwound from the supply reel 202 is attached so as to extend to a take-up reel 208 along a transport path.
In addition, a plurality of acrylic resin plates AR with protective sheets P attached thereto are held in the supply section 30 .

(Step S2)
The feed mechanism 20 operates, and the transport rollers 206a, 206b (see FIG. 2) transport the sandwiched adhesive tape TP. As the adhesive tape TP moves, the protective sheet P covering the lower surface of the acrylic resin plate AR with protective sheet P at the lowest position in the supply unit 30 sticks to the adhesive surface of the adhesive tape TP, and the acrylic resin plate AR with protective sheet P is placed on the adhesive tape TP and taken out in the transport direction, as shown in FIG. 4. The taken out acrylic resin plate AR with protective sheet P is detected by a reflective photoelectric sensor SEN.
When the acrylic resin plate AR with the protective sheet P is removed, the succeeding acrylic resin plate AR with the protective sheet P placed on it is also sequentially removed.

(Step S3)
As shown in FIG. 5, the acrylic resin plate AR with the protective sheet P and the adhesive tape TP are sandwiched between the roller 50 and the receiving portion 402 and pressed with a predetermined amount of force.

(Step S4)
As the acrylic resin plate AR with protective sheet P moves further downstream, while contact with the roller 50 is maintained, as shown in Figure 6, the front end floats and the lower edge of the front end comes into contact with the first protrusion 404 formed on the protrusion forming member 40.

(Step S5)
7 , when the acrylic resin plate AR with protective sheet P moves further downstream, while maintaining contact with the roller 50, its front end is sandwiched between the roller 60 and the first protruding portion 404 and rides onto the first protruding portion 404. In other words, the roller 60 presses the front end of the acrylic resin plate AR with protective sheet P against the first protruding portion 404.

(Step S6)
As shown in FIG. 8, the acrylic resin plate AR with the protective sheet P attached thereto is moved while being pressed against the first protruding portion 404 by the roller 60 .
As a result, as the acrylic resin plate AR moves, the protective sheet P sticks to the adhesive surface and is peeled off.

The peeled protective sheet P, with the adhesive surface still attached, changes its transport direction at the second protrusion 406 formed on the protrusion-forming member 40, and moves further downstream on the transport path.
The acrylic resin plate AR from which the protective sheet P has been peeled off is guided by rollers 70 and discharged.

(Step S7)
After the acrylic resin sheet AR has passed, only the adhesive tape TP passes between the roller 50 and the receiving portion 402 and between the roller 60 and the first protruding portion 404 until the succeeding acrylic resin sheet AR has passed.

Thereafter, the above-mentioned steps S2 to S7 are repeated, whereby the acrylic resin plates AR with the protective sheets P are sequentially transported from the supply unit 30, and the protective sheets P are peeled off.
If the optical sensor SEN does not detect the acrylic resin plate AR with the protective sheet P even after a predetermined time has elapsed, the operation of the feed mechanism 20 is stopped.

As described above, the peeling device 10 can peel off the protective sheet P attached to the acrylic resin plate AR.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment, and all changes in conditions that do not depart from the gist of the present invention are within the scope of application of the present invention.
The protective sheet P that can be peeled off by the peeling device 10 is not limited to that attached to the acrylic resin plate AR, but may be that attached to a resin plate other than acrylic. Furthermore, the peeling device 10 can peel off any sheet-like or film-like protective material attached to a plate-like member.

10 Peeling device 20 Feeding mechanism 30 Supply unit 40 Protrusion forming member 50, 60, 70 Roller 80 Control unit 102 Base member 202 Supply reel 204 Driven rollers 206a, 206b Transport roller 208 Take-up reel 302 Abutting member 304 Holder 306 Rod-shaped member 308 Magnet holder base 310 Lever 402 Receiving portion 404 First protrusion 406 Second protrusion 502 Roller holding member 504 First tension coil spring 602 Roller holding member 604 Second tension coil spring 802 Housing AR Acrylic resin plate AX Rotating shaft H502, H602 Hole P Protective sheet TP Adhesive tape SEN Optical sensor

The present invention relates to a protective material peeling device and a protective material peeling method.

Patent Document 1 describes a method for peeling a protective sheet for a thin plate, which is used in an apparatus that peels a protective sheet from a thin plate by pressing and adhering a long, tensioned adhesive tape to the surface of the protective sheet, which is attached to the thin plate and has the same shape as the plate, while pulling it up. This peeling method is characterized in that the initial lifting location of the adhesive tape that is pressed and adhered is one of the vertices of the protective sheet.

Patent Document 2 describes a protective sheet peeling device that peels off a protective sheet from a flat part to which the protective sheet is attached. This protective sheet peeling device is equipped with an adhesive tape that moves with the adhesive side facing up, a beating arm with a beating plate that intermittently beats up the underside of the adhesive tape, and a cam portion that drives the beating arm. The device is characterized in that it places a flat part with the protective sheet facing down on the adhesive tape, moves together with the adhesive tape, intermittently beats the protective sheet from below via the adhesive tape with the beating plate of the beating arm to adhere the protective sheet to the adhesive tape, and peels off the protective sheet from the flat part when it is discharged.

Japanese Patent Application Publication No. 9-114384 JP 2021-84787 A

The present invention aims to provide a protective material peeling device and a protective material peeling method for peeling off a sheet-like or film-like protective material attached to a plate-like member.

The invention described in claim 1 is a protective material peeling device for peeling off a sheet-like or film-like protective material affixed to a plate-like member, comprising: a feed mechanism for feeding an adhesive tape that is attached to the plate-like member via the protective material and for transporting the plate-like member; a protrusion forming member having a protruding protrusion formed thereon; and a first roller that contacts the side of the plate-like member transported by the adhesive tape opposite to the side to which the protective material is affixed and presses the adhesive tape against the protrusion , and when the plate-like member passes between the protrusion and the first roller, the protective material is peeled off from the plate-like member by the adhesive tape .

The invention described in claim 2 is the protective material peeling device described in claim 1, in which the first roller presses the front end of the plate-like member against the protruding portion.

The invention described in claim 3 is the protective material peeling device described in claim 2, further comprising a supply unit that holds a plurality of the plate-like members in a vertically stacked manner.

The invention described in claim 4 is a protective material peeling device described in claim 3, in which the adhesive tape passes under the plate-shaped member that is in the lowest position held by the supply section, and the protective material affixed to the plate -shaped member comes into contact with the adhesive surface of the adhesive tape.

The invention described in claim 5 is the protective material peeling device described in claim 4, further comprising a second roller disposed downstream in the conveying direction of the supply section and upstream in the conveying direction of the first roller, which presses the protective material against the adhesive surface of the adhesive tape.

The invention described in claim 6 is the protective material peeling device described in claim 5, in which the feed mechanism has a transport roller that feeds the adhesive tape.

The invention described in claim 7 is a method for peeling off a protective material by a protective material peeling device including a feed mechanism that feeds an adhesive tape that is stuck to a sheet-like or film-like protective material affixed to a plate-like member and is used to transport the plate-like member, a protrusion forming member having a protruding protrusion formed thereon, and a roller that contacts the side of the plate-like member transported by the adhesive tape opposite to the side to which the protective material is affixed and presses the adhesive tape against the protrusion, the method including the steps of: the feed mechanism feeding the adhesive tape stuck to the plate-like member via the protective material ; the roller pressing the adhesive tape that transports the plate-like member against the protrusion; and the adhesive tape peeling off the protective material from the plate-like member that has passed between the protrusion and the roller .

The present invention provides a protective material peeling device and a protective material peeling method for peeling off a sheet-like or film-like protective material attached to a plate-like member.

1 is an external view of a protective sheet peeling device according to an embodiment of the present invention. FIG. 2 is a front view of the protective sheet peeling device. 3 is an explanatory diagram illustrating an acrylic resin plate and an adhesive tape in a supply unit included in the protective sheet peeling device. FIG. FIG. 11 is an explanatory diagram (part 1) showing the operation of the protective sheet peeling device, and is an enlarged front view of the periphery of a protrusion-forming member. FIG. 11 is an explanatory diagram (part 2) showing the operation of the protective sheet peeling device, and is an enlarged front view of the periphery of the protrusion-forming member. FIG. 11 is an explanatory diagram (part 3) showing the operation of the protective sheet peeling device, and is an enlarged front view of the periphery of the protrusion-forming member. FIG. 11 is an explanatory diagram (part 4) showing the operation of the protective sheet peeling device, and is an enlarged front view of the periphery of the protrusion-forming member. FIG. 5 is an explanatory diagram (part 5) showing the operation of the protective sheet peeling device, and is an enlarged front view of the periphery of the protrusion-forming member.

Next, with reference to the attached drawings, an embodiment of the present invention will be described to facilitate understanding of the present invention. Note that parts that are not relevant to the description may be omitted from the illustrations.

A protective sheet P peeling device 10 (see Figure 1) according to one embodiment of the present invention is capable of peeling off a protective sheet P attached to an acrylic resin plate (an example of a plate-like member) AR using an adhesive tape TP, and discharging the acrylic resin plate AR from which the protective sheet P has been peeled off.
The thickness of the acrylic resin plate AR is, for example, 1.0 to 5.0 mm.
The protective sheet (sheet-like protective material) P is, for example, a paper sheet. Instead of the protective sheet P, a protective film (film-like protective material) may be used, and any sheet-like or film-like protective material for protecting the surface of the plate-like member may be used.

As shown in FIG. 2, the protective sheet P peeling device 10 (hereinafter simply referred to as "peeling device 10") includes a feed mechanism 20, a supply unit 30, a protrusion forming member 40, a roller 50, a roller 60, a roller 70, and a control unit 80.

The feed mechanism 20 has a supply reel 202, a driven roller 204 (see FIG. 3), transport rollers 206a, 206b, and a take-up reel 208, and can feed the adhesive tape TP having the acrylic resin plate AR attached thereto via the protective sheet P in one direction and transport it along a predetermined transport path.

2, the supply reel 202 can hold the adhesive tape TP wound in a roll shape. The width of the adhesive tape TP is greater than the width of the acrylic resin sheet AR.
As shown in FIG. 3 , the driven roller 204 is provided below the supply unit 30 and is capable of changing the feed direction of the adhesive tape TP pulled out from the supply reel 202 .

The transport rollers 206a and 206b (see FIG. 2) can feed the adhesive tape TP with the protective sheet P attached thereto by sandwiching it between them. The transport roller 206a is driven at a predetermined rotation speed by a feed motor (not shown). The feed motor is, for example, a pulse motor.

The take-up reel 208 can take up the adhesive tape TP, which is fed from the supply reel 202 and has the protective sheet P attached thereto. The take-up reel 208 is driven by a torque-controlled take-up motor (not shown). Thus, the adhesive tape TP is taken up while being controlled so that the tension is within a preset range. The take-up motor is, for example, a servo motor.
The feed mechanism 20 may be driven manually instead of by a motor.
The transport path of the adhesive tape TP fed by the feed mechanism 20 will be described later.

As shown in FIG. 1, the supply unit 30 is provided on a steel base member 102 and can hold multiple acrylic resin plates AR with protective sheets P stacked vertically. Each acrylic resin plate AR is held with the protective sheet P facing down.

The supply unit 30 includes a stopper member 302 and a holder 304 .
The abutment member 302 is an angle-shaped member extending in the vertical direction, and abuts against the acrylic resin plate AR at two different points in plan view.
The holder 304 is composed of at least an angled rod-shaped member 306 extending in the vertical direction, and a magnet holder base 308 to which the rod-shaped member 306 is fixed. The magnet holder base 308 can generate a magnetic force by manually rotating a lever 310, and can be easily attached to and detached from the base member 102.

In the supply section 30, the size of the space formed between the abutment member 302 and the holder 304 is adjusted by adjusting the position of the holder 304 relative to the abutment member 302 according to the shape of the acrylic resin plate AR with protective sheet P, and acrylic resin plates with protective sheets of any size are stacked and held.

As shown in FIG. 4, the protrusion forming member 40 is a member fixed to the upper surface of the base member 102. The protrusion forming member 40 has a receiving portion 402, a first protrusion 404, and a second protrusion 406, and the widths of the receiving portion 402, the first protrusion 404, and the second protrusion 406 are each greater than the width of the adhesive tape TP, and come into contact with the non-adhesive surface of the adhesive tape TP (the surface opposite the adhesive surface).

The receiving portion 402 has a horizontal surface formed thereon, which serves as a receiving surface for the roller 50 to press the acrylic resin plate AR with protective sheet P against the adhesive tape TP. Note that the "horizontal surface" referred to here is not a horizontal surface in the strict sense of the word. In other words, the "horizontal surface" means a "substantially horizontal surface" that allows for design and manufacturing errors (same below). Specifically, for example, the surface may be within the range of -5 degrees to +5 degrees with respect to the horizontal line.

The first protrusion 404 protrudes above the receiving portion 402, and when viewed from the front, a curved surface is formed on the upstream side of the transport direction of the adhesive tape TP, and a substantially vertical surface is formed downstream of the top in the transport direction. In other words, when viewed from the front, the first protrusion 404 gradually becomes taller from the upstream side to the downstream side in the transport direction, and has a cut-off shape at the top. It is preferable that the degree of change in height gradually decreases toward the downstream side in the transport direction.

The second protruding portion 406 protrudes at a position lower than the first protruding portion 404 in the direction in which the acrylic resin plate AR from which the protective sheet P has been peeled off is discharged, and has a curved tip.
The second protruding portion 406 can change the orientation of the adhesive tape TP with the peeled-off protective sheet P attached thereto.

The roller (an example of a second roller) 50 comes into contact with the surface of the acrylic resin plate AR opposite to the surface to which the protective sheet P is attached, and can press the protective sheet P against the adhesive surface of the adhesive tape TP.
The roller 50 is disposed on the downstream side of the supply unit 30 in the conveying direction and on the upstream side of the roller 60 in the conveying direction when viewed from the front, and is provided on a roller holding member 502. The roller holding member 502 can rotate around a rotation axis AX extending in the horizontal direction (see arrow R1 in FIG. 4), and one end of a first tension coil spring 504 is attached to a hole H502 formed at a position away from the rotation axis AX when viewed from the front. A force is applied to the roller 50 in a direction pressing it against the receiving portion 402 by the action of this first tension coil spring 504.
In each of the drawings, the upper portion of the first tension coil spring 504 is omitted, and only the lower portion is shown.

Therefore, when the acrylic resin plate AR with the protective sheet P attached thereto passes between the roller 50 and the receiving portion 402, the roller 50 moves up and down as the acrylic resin plate AR with the protective sheet P attached thereto passes.
Here, depending on the configuration of the peeling device 10, if the roller 50 is not provided, a phenomenon may occur in which the adhesive tape TP is conveyed in a meandering manner and becomes tangled. The roller 50 suppresses such a phenomenon.

The roller (an example of a first roller) 60 comes into contact with the surface of the acrylic resin plate AR opposite to the surface to which the protective sheet P is attached, and can press the adhesive tape TP with the acrylic resin plate AR with protective sheet P attached against the first protrusion 404.
The roller 60 is disposed above the first protrusion 404 and downstream of the roller 50 in the conveying direction when viewed from the front, and is provided on a roller holding member 602. The roller holding member 602 can rotate about a rotation axis AX extending in the horizontal direction (see arrow R2 in FIG. 4), and one end of a second tension coil spring 604 is attached to a hole H602 formed at a position away from the rotation axis AX when viewed from the front. A force is applied to the roller 60 in a direction pressing it against the first protrusion 404 by the action of the second tension coil spring 604.
In each of the drawings, the upper portion of the second tension coil spring 604 is omitted, and only the lower portion is shown.

Therefore, when the acrylic resin plate AR with the protective sheet P passes between the roller 60 and the first protrusion 404, the roller 60 moves up and down as the acrylic resin plate AR with the protective sheet P passes.

The rollers 70 can guide the acrylic resin sheet AR from which the protective sheet P has been peeled off. The acrylic resin sheet AR guided by the rollers 70 is discharged in the direction of the arrow X shown in FIG.
The roller 70 is disposed on the opposite side of the roller 60 from the roller 50 in plan view, and is provided on a roller holding member 602 shared with the roller 60 as shown in FIG.
Therefore, the roller 70 moves in conjunction with the movement of the roller 60 .

The control unit 80 is a drive device for supplying drive current to a feed motor (not shown) that drives the transport roller 206a and a take-up motor (not shown) that drives the take-up reel 208, and a control device for controlling the drive device. These drive devices and control devices are housed in a housing 802, as shown in Figures 1 and 2.

The main body of a feed motor (not shown) and a winding motor (not shown) are also housed inside the housing 802, and the rotating shafts of the winding motor and the feed motor are each arranged to protrude from the surface of the housing 802 toward the front side.
As shown in FIG. 1, a base member 102 is fixed to the front side of the upper surface of the housing 802 so as to protrude toward the front side.

In the peeling device 10, the adhesive tape TP is fed through the transport path described below.
First, as shown in FIG. 2 , the adhesive tape TP pulled out from the supply reel 202 is pulled by the transport rollers 206 a, 206 b with the adhesive surface facing up, toward the lower side of the supply section 30, and is fed horizontally by the driven roller 204 below the supply section 30.
That is, the adhesive tape TP passes under the acrylic resin plate AR with protective sheet P that is in the lowest position held by the supply unit 30, and a portion of the acrylic resin plate AR with protective sheet P comes into contact with the adhesive surface of the adhesive tape TP.

Next, as shown in FIG. 4, the adhesive tape TP sent horizontally passes through a position (position A) between the roller 50 and the receiving portion 402, passes through a position (position B higher than position A) between the roller 60 and the first protrusion 404, and then changes direction at a position (position C higher than position A and lower than position B) where the second protrusion 406 is located, and is sent diagonally downward. In addition, when the feeding direction changes at position C, the adhesive surface of the adhesive tape TP becomes downward.

Finally, the adhesive tape TP that has been sent diagonally downward passes between transport rollers 206a and 206b, as shown in FIG. 2, and is wound onto a winding reel 208 that is driven by a winding motor (not shown).

Next, the operation of the peeling device 10 (a method for peeling off the protective sheet P) will be described with reference to FIGS.
The peeling device 10 operates in accordance with the following steps S1 to S7.

(Step S1)
A roll of adhesive tape TP is held on a supply reel 202 of the peeling device 10, and the adhesive tape TP unwound from the supply reel 202 is attached so as to extend to a take-up reel 208 along a transport path.
In addition, a plurality of acrylic resin plates AR with protective sheets P attached thereto are held in the supply section 30 .

(Step S2)
The feed mechanism 20 operates, and the transport rollers 206a, 206b (see FIG. 2) transport the sandwiched adhesive tape TP. As the adhesive tape TP moves, the protective sheet P covering the lower surface of the acrylic resin plate AR with protective sheet P at the lowest position in the supply unit 30 sticks to the adhesive surface of the adhesive tape TP, and the acrylic resin plate AR with protective sheet P is placed on the adhesive tape TP and taken out in the transport direction, as shown in FIG. 4. The taken out acrylic resin plate AR with protective sheet P is detected by a reflective photoelectric sensor SEN.
When the acrylic resin plate AR with the protective sheet P is removed, the succeeding acrylic resin plate AR with the protective sheet P placed on it is also sequentially removed.

(Step S3)
As shown in FIG. 5, the acrylic resin plate AR with the protective sheet P and the adhesive tape TP are sandwiched between the roller 50 and the receiving portion 402 and pressed with a predetermined amount of force.

(Step S4)
As the acrylic resin plate AR with protective sheet P moves further downstream, while contact with the roller 50 is maintained, as shown in Figure 6, the front end floats and the lower edge of the front end comes into contact with the first protrusion 404 formed on the protrusion forming member 40.

(Step S5)
7 , when the acrylic resin plate AR with protective sheet P moves further downstream, while maintaining contact with the roller 50, its front end is sandwiched between the roller 60 and the first protruding portion 404 and rides onto the first protruding portion 404. In other words, the roller 60 presses the front end of the acrylic resin plate AR with protective sheet P against the first protruding portion 404.

(Step S6)
As shown in FIG. 8, the acrylic resin plate AR with the protective sheet P attached thereto is moved while being pressed against the first protruding portion 404 by the roller 60 .
As a result, as the acrylic resin plate AR moves, the protective sheet P sticks to the adhesive surface and is peeled off.

The peeled protective sheet P, with the adhesive surface still attached, changes its transport direction at the second protrusion 406 formed on the protrusion-forming member 40, and moves further downstream on the transport path.
The acrylic resin plate AR from which the protective sheet P has been peeled off is guided by rollers 70 and discharged.

(Step S7)
After the acrylic resin sheet AR has passed, only the adhesive tape TP passes between the roller 50 and the receiving portion 402 and between the roller 60 and the first protruding portion 404 until the succeeding acrylic resin sheet AR has passed.

Thereafter, the above-mentioned steps S2 to S7 are repeated, whereby the acrylic resin plates AR with the protective sheets P are sequentially transported from the supply unit 30, and the protective sheets P are peeled off.
If the optical sensor SEN does not detect the acrylic resin plate AR with the protective sheet P even after a predetermined time has elapsed, the operation of the feed mechanism 20 is stopped.

As described above, the peeling device 10 can peel off the protective sheet P attached to the acrylic resin plate AR.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment, and all changes in conditions that do not depart from the gist of the present invention are within the scope of application of the present invention.
The protective sheet P that can be peeled off by the peeling device 10 is not limited to that attached to the acrylic resin plate AR, but may be that attached to a resin plate other than acrylic. Furthermore, the peeling device 10 can peel off any sheet-like or film-like protective material attached to a plate-like member.

10 Peeling device 20 Feeding mechanism 30 Supply unit 40 Protrusion forming member 50, 60, 70 Roller 80 Control unit 102 Base member 202 Supply reel 204 Driven rollers 206a, 206b Transport roller 208 Take-up reel 302 Abutting member 304 Holder 306 Rod-shaped member 308 Magnet holder base 310 Lever 402 Receiving portion 404 First protrusion 406 Second protrusion 502 Roller holding member 504 First tension coil spring 602 Roller holding member 604 Second tension coil spring 802 Housing AR Acrylic resin plate AX Rotating shaft H502, H602 Hole P Protective sheet TP Adhesive tape SEN Optical sensor

Claims (7)

A protective material peeling device that peels off a sheet-like or film-like protective material attached to a plate-like member, comprising:
a protrusion-forming member having a protruding protrusion formed thereon;
a feed mechanism that transports the adhesive tape to which the plate-like member is attached via the protective material along a predetermined transport path;
a first roller that contacts the surface of the plate-shaped member opposite to the surface to which the protective material is attached, and presses the adhesive tape with the plate-shaped member attached against the protrusion. 2. The protective material peeling device according to claim 1,
The protective material peeling device, wherein the first roller presses the front end of the plate-like member against the protruding portion. 3. The protective material peeling device according to claim 2,
The protective material peeling device further comprises a supply section that holds a plurality of the plate-like members in a vertical stack. 4. The protective material peeling device according to claim 3,
the conveying path passes under the plate-like member that is in the lowest position and is held by the supply unit,
The plate-like member contacts the adhesive surface of the adhesive tape. 5. The protective material peeling device according to claim 4,
a second roller disposed downstream in the transport direction of the supply section and upstream in the transport direction of the first roller for pressing the protective material against the adhesive surface of the adhesive tape; 6. The protective material peeling device according to claim 5,
The protective material peeling device, wherein the feeding mechanism has a transport roller that feeds the adhesive tape. A method for peeling a protective material by the protective material peeling device according to claim 1,
a feeding mechanism feeding the adhesive tape;
a step of pressing the plate-like member transported together with the adhesive tape against the protruding portion by the first roller;
A method for removing a protective material, comprising: a step of removing the protective material.