JPH08217320A - Adhesive tape sticking device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a pasting device capable of accurately pasting a narrow adhesive tape to a work. [Structure] A tape sticking unit 2 that can be moved vertically and horizontally is wound around an adhesive tape T drawn from an original reel 13 and sent out, and an adhesive tape T sent out is directed to a work holding table 1. A sticking roller 19 that guides winding in a posture, a tape support member 20 that includes a tape guide groove 21 that guides the adhesive tape T in a position above the roller 19, and an adhesive tape T on the groove bottom of the tape guide groove 21. The tape attaching unit 2 is equipped with a reciprocally movable tape transfer body 34 that nips and transfers it toward the roller 19 in a pressed state, and a cutting mechanism 26 that cuts the adhesive tape T at a position higher than the roller 19 and moves down the tape applying unit 2.
The adhesive tape T located at the tip of the roller 19 is moved horizontally and attached to the work W on the work holding table 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for sticking an adhesive tape of a predetermined length onto various works, and particularly suitable for sticking an adhesive tape having a small width of about 2 to 5 mm. Sticking device.

[0002]

2. Description of the Related Art Conventionally, in a work of attaching an adhesive tape of a predetermined length to a work, an adhesive tape of a predetermined length cut and supplied by a tape length cutting device is manually attached to the work. It was

[0003]

However, it takes considerable skill to manually attach the adhesive tape, which has been cut to a fixed length, to the work with high precision. Particularly, a tape having a narrow width is easily stretched and cut. It was easy and easy to slip, and it was even more difficult to attach with high accuracy.

The present invention has been made by paying attention to such a situation, and it is an object of the present invention to provide a pasting device capable of accurately pasting a narrow adhesive tape whose position and posture are difficult to determine to a work. To aim.

[0005]

The present invention has the following constitution in order to achieve the above object. That is, the adhesive tape sticking device according to the present invention comprises a work holding table for holding the work in a fixed posture, and a tape sticking unit arranged so as to be relatively movable toward and away from the work holding table,
The tape applying unit winds the adhesive tape drawn from the original reel and sends it out along a predetermined tape supply path, and a guide roller, and the adhesive tape sent out is wound in a posture toward the work holder. A sticking roller that guides the rotation, a tape support member that has a tape guide groove that guides the adhesive tape in the upper position of the tape supply path from the sticking roller, and an adhesive tape that is pressed against the bottom of the tape guide groove. Equipped with a reciprocating tape transfer body that pinches and transfers toward the roller, and a cutting mechanism that cuts the adhesive tape at the upper position of the tape supply path from the pasting roller, the work holding table and the tape pasting unit in the tape longitudinal direction. By moving the adhesive tape located on the tip of the sticking roller on the work holding table. A joining drive means Yuku Affix the click, characterized in that are provided with a feeding driving means for actuating feed the feed roller tunes to the joining operation.

[0006]

According to the above construction, first, with the front end of the adhesive tape positioned at the tip of the sticking roller, the work holder and the tape sticking unit are brought relatively close to each other to stick the surface of the work held on the work holder. Press the front edge of the adhesive tape to the starting position. Next, the work and the tape sticking unit are moved relative to each other, and the feeding roller is fed and operated in synchronization with this, whereby the adhesive tape is continuously stuck linearly on the surface of the work. During this time, the tape transfer body is separated from the tape guide groove.

Then, when the feeding of the set length is performed, the feeding roller is stopped and the cutting mechanism is operated to cut the adhesive tape, and the trailing end of the attached adhesive tape reaches the tip of the attaching roller. By the way, the work holder and the tape sticking unit are moved relative to each other,
This completes one sticking operation.

Before the next sticking operation, the tape transfer body is engaged with the tape guide groove and the adhesive tape is sandwiched between the groove bottom and the tape transfer body, and the tape transfer body is directly guided along the tape guide groove. By moving forward, the front end (cut end) of the adhesive tape is sent to the tip of the sticking roller, and is ready for the next sticking.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an entire embodiment of an adhesive tape sticking device according to the present invention, and FIG. 2 is a plan view thereof.

The pressure-sensitive adhesive tape sticking device of this embodiment is a device for sticking a light-scattering sheet to the surface of a transparent acrylic plate, which is a light guide plate of a backlight used in a liquid crystal display, by using a double-sided sticky tape. A work holding table 1 which is used in a process of sticking a double-sided adhesive tape on the surface of a scattering sheet, and basically has a light scattering sheet (hereinafter referred to as a work W) mounted and held, It is composed of a tape sticking unit 2 arranged above it.

The work holding table 1 is composed of a turntable linked to a motor 3 via a belt 5 so as to be driven to rotate about a vertical axis P, and has a rectangular upper surface. Four work suction surfaces 4 are provided, and a large number of suction holes provided in each work suction surface 4 communicate with a vacuum generator (not shown).

The tape application unit 2 is an X-axis robot 6
Also, as will be described later, the work W is supported by the Y-axis robot 7 so as to be movable left and right and front and back, and with respect to the work W held on the work suction surface 4 located at the innermost station (upper side in FIG. 2). The tape application is performed by moving the tape application unit 2 in the left-right direction which is the X-axis direction.

The structure of the tape sticking unit 2 will be described below with reference to FIGS. 3 and 4. FIG. 3 is a front view of the tape sticking unit, and FIG. 4 is a side view thereof. A head base 9 is connected to a movable base 8 that is moved in the left-right direction by the X-axis robot 6, and a sticking head 10 can be vertically driven via a pair of left and right guide shafts 11 and an air cylinder 12 while being attached to the head base 9. Supported by.

An original fabric reel 13 of a double-sided adhesive tape T is rotatably supported on the upper front surface of the head base 9, and a tension roller capable of swinging left and right for guiding the double-sided adhesive tape T fed from the original fabric reel 13 in a winding manner. 14 is mounted, and a fixed position guide roller 15 for guiding the double-sided adhesive tape T that has passed through the tension roller 14 to the pasting head 10, a feeding roller 17 driven by a stepping motor 16, and a position fixed guide roller 18. A sticking roller 19 made of a rubber roller slightly protruding from the lower end of the sticking head 10 is provided, and a tape supply path from the original reel 13 to the sticking roller 19 is formed.

A tape support member 20 which is located between the guide roller 18 and the sticking roller 19 and guides the adhesive tape T to the lower end of the sticking roller 19 is fixed to the sticking head 10. As shown in FIGS. 6 and 7, a tape guide groove 21 having substantially the same width as that of the adhesive tape T is formed on the side surface of the tape support member 20, and the bottom surface of the tape guide groove 21 extends in the groove direction. Adsorption holes 22 are formed at a predetermined pitch, and are connected to a vacuum generator (not shown) via an internal passage 23 and a pipe 24. This tape support member 20
Has a tape guide groove corresponding to the width of the adhesive tape T,
It is configured to be replaceable with another tape support member.

As shown in FIG. 7, the guide roller 18 is a flanged roller having front and rear flanges 18a and 18b, and the rear flange 18b is formed integrally with the roller. The front flange portion 18a is fixed in position by tightening an O-ring 25 with a C-shaped member having a notch at one position in the circumferential direction, and the flange portion 18a can be positionally adjusted back and forth according to the width of the adhesive tape T. Both collar parts 18a, 1
The adhesive tape T is configured to be positioned and guided in the width direction between 8b.

A cutting mechanism 26 is provided so as to face the lower side surface of the tape support member 20. This cutting mechanism 26
As shown in the plan view of FIG. 5, a slide shaft 27 penetratingly supported by the pasting head 10 so as to be slidable back and forth, and a cutter holder 2 supported at its front end so as to be swingable around a fulcrum a.
8. A disc blade 29 which is rotatably supported at one end of the cutter holder 28 and a disc blade 2 which is urged by swinging the cutter holder 28.
The slide shaft 27 includes a spring 30 for lightly urging 9 toward the tape support member 20, an air cylinder 32 for driving the slide shaft connected to the other end of the slide shaft 27 via a connecting member 31, and the like. The disc blade 29 moves back and forth.
In order to cut the adhesive tape T in the tape guide groove 21 in its width direction, a cutting groove 33 through which the disc blade 29 passes is formed on the lower side surface of the tape support member 20 orthogonal to the tape guide groove 21. ing.

Further, a vertically long tape transfer body 34 is provided so as to face the tape guide groove 21 of the tape support member 20. As shown in the plan view of FIG. 8, the tape transfer body 34 is configured to be engaged with and disengaged from the tape guide groove 21 by the operation of the lateral air cylinder 35, and as shown in the side view of FIG. The tape transfer body 34 can be moved along the tape guide groove 21 by vertically moving the air cylinder 35 itself by the vertically oriented air cylinder 36. Since the tip portion 34a (see FIG. 6) of the tape transfer body 34 engaged in the tape guide groove 21 contacts the adhesive layer, it is coated with a resin material having high releasability, and the adhesive tape T in the groove is removed. It has a serrated surface for non-slip support.

As shown in FIGS. 10 to 13, a fulcrum b is provided at the bottom of the sticking head 10 by an air cylinder 38.
An arm 39 that is swingably driven is provided, and a tape pressing body 40 that can move toward and away from the attaching roller 19 is attached to the tip of the arm 39. In addition, the pressing roller 42, which is urged to swing downward and whose lower limit is regulated by a stopper 41, is provided at the back of the sticking roller 19.
Has been deployed.

When the work W, which is a light-scattering sheet for a liquid crystal display backlight, is attached to an acrylic plate using a double-sided adhesive tape as in this embodiment, the work W is placed parallel to two opposite sides. There are specifications for sticking the adhesive tape and specifications for sticking the adhesive tape orthogonally to two adjacent sides. The procedure for sticking the adhesive tape for each specification will be described below.

[Specification of Pasting on Two Opposite Sides] (1) First, pasting conditions are input by operating the keys on the operation panel 43 shown in FIG.

(2) As shown in FIG. 15A, the work W is mounted and set on the work suction surface 4 located on the front side.

(3) The operation switch 44 is turned on.

(4) The work W is adsorbed and held on the work adsorbing surface 4, and as shown in FIG. 15B, the work holding table 1 is rotated by 180 °, and the work W is moved to the innermost sticking station. Moving.

(5) The X-axis robot 6 and the Y-axis robot 7 are actuated in accordance with the sticking conditions, and the tape sticking unit 2 moves to the tape sticking starting point on one side of the work W.

(6) The sticking head 10 of the tape sticking unit 2 is moved downward, and the sticking roller 19 is pressed against the surface of the work W. In this case, the front end of the adhesive tape T is previously positioned at the lower end of the sticking roller 19 by the tape pressing body 40 (see FIG. 14).

(7) When the front end of the adhesive tape T is pressed against the surface of the work W, the tape pressing body 40 retracts.

(8) Only the X-axis robot 6 is operated to move the tape adhering unit 2 to the left in FIG. 2 at a predetermined speed, and in synchronization with this, the feeding roller 17 is operated to actuate the adhesive tape T. Stick it linearly on the surface of the work W.

(9) When the feeding of the predetermined length is completed, the tape applying unit 2 is temporarily stopped and the cutting mechanism 26
Is activated, the adhesive tape T is cut, the tape applying unit 2 is advanced again, and the adhesive tape T in front of the cutting position is moved.
Is continuously attached.

(10) As the sticking head 10 moves upward, the tape sticking unit 2 returns to the original position, and the first sticking along one side is completed.

(11) Next, the Y-axis robot 7 is actuated to move the tape sticking unit 2 to the front and set it to the sticking start position on the opposite side.

(12) After that, the operations (6) to (9) are performed, and the second pasting is performed in parallel with the first pasting. The operation of sending the cut end of the adhesive tape T to the lower end of the sticking roller 19 prior to the second sticking is performed as follows.

That is, as shown in FIG. 11, first, the tape transfer body 34 is driven forward by the air cylinder 35 to be inserted into the upper part of the tape guide groove 21, and the adhesive tape T is inserted.
Is sandwiched between the groove bottom of the tape guide groove 21 and the tape transfer body 34. Next, as shown in FIG. 12, the tape transfer body 34 is driven downward by the air cylinder 36, and the adhesive tape T is fed downward along the tape guide groove 21.
When the feeding of the set length is completed, the tape transfer body 34 is stopped and the tape pressing body 40 is driven forward by the air cylinder 38, and the lower end (cut end) of the adhesive tape T is moved as shown in FIGS. 13 and 14. Is pressed against the lower end of the sticking roller 19.

(13) When the two sticking operations are completed, as shown in FIG.
The work W, which has been subjected to the sticking process on the opposite two sides, is moved to the front station again by rotating 0 °, and the processed work W is taken out.

[Specification of Sticking on Two Adjacent Sides] (1) First, the sticking conditions are input by operating the keys on the operation panel 43.

(2) As shown in FIG. 16 (a), the work W ₁ is mounted and set on the work suction surface 4a which is positioned in the foreground and has a vertically long posture.

(3) The operation switch 44 is turned on.

(4) As shown in FIG. 16 (b), the work holding table 1 rotates 90 ° in the clockwise direction.

(5) As shown in FIG. 16C, the work holding table 1 is further rotated clockwise by 90 ° and the work W ₁
Is set on the farthest pasting stage and one side is pasted. In this state, the next work W ₂ is mounted and set on the work suction surface 4c which is located in the front and has a vertically long posture.

(6) As shown in FIG. 16 (d), when the attachment to the _first work W ₁ is completed, the work holding table 1
Rotates 90 ° clockwise.

(7) As shown in FIG. 17 (e), the work holding table 1 is further rotated clockwise by 90 °, and the second work W ₂ is set on the innermost pasting stage to attach one side. Done. In addition, the first work W ₁ pasted on one side is taken out from the work suction surface 4a having a vertically long posture, and waits.

(8) As shown in FIG. 17 (f), when the attachment to the second work W ₂ is completed, the work holding table 1 further rotates clockwise by 90 °, and the work holding table 1 is on standby. The first work W ₁ that has been pasted on one side is set on the work suction surface 4b in the horizontally long posture, which is located in the front.

(9) As shown in FIG. 17 (g), the work holder 1 further rotates 90 ° in the clockwise direction, and from the work suction surface 4a in the vertically long posture that comes to the front, the second one is pasted on one side. Take out the workpiece W ₂ of No. ₂ and wait.

(10) As shown in FIG. 17 (h), the work holder 1 further rotates 90 ° in the clockwise direction, and the first work W ₁ set on the innermost pasting stage is moved to the other side. Tape is attached. In addition, during this time, the second workpiece W ₂ which has been affixed on one side is set on the workpiece suction surface 4d in the horizontally long posture, which is located in the front.

(11) As shown in FIG. 18 (i), the work holder 1 further rotates 90 ° in the clockwise direction, and the third work W is placed on the work suction surface 4a in the vertically long position which is located in front.
Set with ₃ .

(12) As shown in FIG. 18 (j), the work holding table 1 is further rotated clockwise by 90 °, and the first work W ₂ set on the innermost pasting stage is moved to the other side. Tape is attached. Further, the first work W ₁ which has been pasted on the two sides is taken out from the work suction surface 4b which is located in the foreground and has a horizontally long posture.

The above is the one-cycle sticking procedure, and the tape sticking is continuously carried out by repeating the above procedure.

In the above embodiment, the case of applying the double-sided adhesive tape was illustrated, but the present invention can be applied to the case of applying the single-sided adhesive tape. Further, the work is limited to a sheet-like work, and can be applied to various forms of work.

Further, in the apparatus of the embodiment, the work holding table 1 is constituted by the turntable, but this is such that the stacked and stored works are sucked and held one by one and conveyed to the table for performing the sticking process. It may be one.

Further, in the apparatus of the embodiment, the tape pressing body 40
The lower end (cut end) of the adhesive tape T was pressed against the lower end of the sticking roller 19 by means of the adhesive tape T, but the feeding attitude of the adhesive tape T was inclined so that the front end of the adhesive tape T entered the lower end of the sticking roller 19. For example, sticking roller 1
Since the tip of the adhesive tape T is attached to the work surface by lowering 9, the tape pressing body 40 does not necessarily have to be provided in such a case.

[0051]

As is apparent from the above description, according to the adhesive tape sticking apparatus of the present invention, the adhesive tape is fed to the sticking roller by being inserted into the tape guide groove of the tape supporting member, so that the sticking roller is in the vicinity of the sticking roller. The position of the pressure-sensitive adhesive tape in the width direction can be stabilized, and it becomes possible to accurately adhere even the pressure-sensitive adhesive tape having a small width.

Further, in order to send the cut end of the adhesive tape to the tip of the pasting roller, the tape transfer body is moved along the tape guide groove while the adhesive tape is sandwiched between the groove bottom of the tape guide groove and the tape transfer body. Since it is moved, it is possible to reliably feed the adhesive tape without forcing it and maintaining an accurate positioning state.

[Brief description of drawings]

FIG. 1 is an overall front view of an embodiment of an adhesive tape sticking device according to the present invention.

FIG. 2 is an overall plan view of the device of the embodiment.

FIG. 3 is a front view of the tape sticking unit.

FIG. 4 is a side view of the tape sticking unit.

FIG. 5 is a plan view of a cutting mechanism portion.

FIG. 6 is a perspective view of the vicinity of a sticking roller.

FIG. 7 is a partially cutaway front view in the vicinity of a pasting roller.

FIG. 8 is a plan view of the periphery of the tape transfer body.

FIG. 9 is a plan view around the tape pressing body.

FIG. 10 is an explanatory diagram of a feeding operation of the adhesive tape.

FIG. 11 is an explanatory diagram of a feeding operation of the adhesive tape.

FIG. 12 is an explanatory diagram of a feeding operation of the adhesive tape.

FIG. 13 is an explanatory diagram of a feeding operation of the adhesive tape.

FIG. 14 is a diagram showing a state in which an adhesive tape is sandwiched between a tape pressing body and a pasting roller.

FIG. 15 is an explanatory diagram showing a tape attaching procedure on two opposite sides.

FIG. 16 is an explanatory diagram showing a tape attaching procedure to two adjacent sides.

FIG. 17 is an explanatory diagram showing a tape attaching procedure to two adjacent sides.

FIG. 18 is an explanatory diagram showing a tape attaching procedure to two adjacent sides.

[Explanation of symbols]

 1 Work holding table 2 Tape sticking unit 13 Raw fabric reel 17 Feeding roller 18 Guide roller 19 Sticking roller 20 Tape support 21 Tape guide groove 26 Cutting mechanism 34 Tape transfer body T Adhesive tape

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Katsuya Kawabata 1-2-1, Shimohozumi, Ibaraki City, Osaka Prefecture Nitto Seiki Co., Ltd.

Claims (1)

[Claims] 1. A work holding table for holding a work in a fixed posture, and a tape sticking unit arranged so as to be able to move toward and away from the work holding table, wherein the tape sticking unit includes a raw reel. From the feeding roller and the guide roller that winds the adhesive tape that has been drawn out from and feeds it along a predetermined tape supply path, the sticking roller that guides the fed adhesive tape to the posture toward the work holder, and the sticking roller. A tape support member that has a tape guide groove that guides the adhesive tape in the upper position of the tape supply path, and a reciprocating movement that holds the adhesive tape against the groove bottom of the tape guide groove and nips it toward the attaching roller. Equipped with a flexible tape transfer body and a cutting mechanism that cuts the adhesive tape at a position above the tape supply path from the application roller. And a tape sticking unit that moves the holder and the tape sticking unit relative to each other in the longitudinal direction of the tape to stick the adhesive tape located at the tip of the sticking roller to the work on the work holder and the sticking operation means. And a feeding drive means for feeding out the feeding roller in synchronism with the above.