JPH0740434A - Method and apparatus for sticking sheet - Google Patents

Abstract

PURPOSE:To automatically stick a sheet to the surface of a work without using a mold matched with the shape of the work even if the work is large and has unevenness. CONSTITUTION:In a sheet sticking apparatus bonding the sheet successively supplied in the state held on long pasteboard 15 to the surface of the work W fed on a conveyor 36, a peel plate 35 suddenly folding back the pasteboard 15 to peel the advance side end part of the sheet from the pasteboard 15 is arranged on the way of the supply route of the pasteboard 15 holding the sheet and a grid 40 freely moved forwardely and rearwardly along the work feed direction and sucking and holding the peeled end part of the sheet is arranged in front of the peel plate 35 along the work feed direction. The freely liftable press roller 51 falling to press the sheet to the work W is provided above the grid 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an optimal sheet sticking to be used for sticking a sticking sheet such as a protective film which is flexible and excellent in conformability to the surface of a large-sized work having unevenness on the surface. A method and a sheet sticking apparatus.

[0002]

2. Description of the Related Art For example, in an automobile wheel,
In order to prevent scratches and stains on the surface of the wheel during storage and transportation after automobile production, attach a protective film that is flexible and has excellent followability to this surface,
It is widely practiced to remove this protective film at the time of sale.

Conventionally, the work of sticking a sheet onto a work surface having a large and uneven surface (not a flat surface), such as a work of sticking a protective film of this kind to a wheel of an automobile, has been performed.
Generally, it is performed manually by a worker.

This is because the highly flexible sheet such as the wheel protective film itself has a thin wall and has essentially no shape-retaining property. This is because it is extremely difficult to conform to the shape of the unevenness even when it is attached to the surface of the large work that it has.

For this reason, for example, as Japanese Examined Patent Publication No. 2-4464, a molding die having a molding surface in which the unevenness is opposite to the sheet pasting surface of the work (molded article) is prepared, and the molding surface of this molding die is imitated. It has been proposed that the sheet formed into the different shape is pressed against the sheet sticking surface of the molded product to be stuck, thereby automating the sticking work.

[0006]

However, as in the above-mentioned conventional example, in the sheet sticking work by the operator's manual work, a great deal of labor is required and the production efficiency is remarkably low. On the other hand, Japanese Patent Publication No. 2-4464. In the one described in the publication, it is necessary to separately prepare a molding die having a molding surface in which the unevenness of the sheet is affixed to the sheet pasting surface of the workpiece and use it according to the work. It is considered troublesome.

In view of the above, the present invention automatically attaches a sheet to a surface of a large work without using a mold suitable for the shape of the work even if the work is large and has irregularities on the surface. The purpose is to provide the things that can be done.

[0008]

In order to achieve the above object, the sheet pasting method according to the present invention is a method for attaching a sheet held on a long mount and sequentially supplied to a work conveyed on a conveyor. A method of attaching a sheet to a surface, wherein the forward end of the sheet is peeled off by rapidly folding the backing sheet, and the edge of the peeled sheet is adsorbed and held, and then the state is held. The sheet is moved forward in synchronization with the conveying direction of the work, and the sheet is pressed against the work through the press roller during the forward movement.

The sheet pasting device is a sheet pasting device for pasting sheets, which are held on a long mount and sequentially supplied, onto the surface of a work conveyed on a conveyor, and holds the sheets. A peel plate is provided in the middle of the feed path of the formed mount so as to sharply fold the mount and separate the forward end of the sheet from the mount, and the peel plate is moved forward in the transport direction of the workpiece. A grit is provided which is movable back and forth along the side of the peeled sheet and holds the peeled sheet by suction, and a press roller is installed above the grit so as to move up and down and press the sheet against the work. Is.

[0010]

According to the present invention configured as described above, by rapidly folding back the running mount, the end portions of the sheets held on the mount and sequentially supplied are separated from the mount by utilizing its rigidity. The end portion of the peeled sheet is adsorbed and held. Then, by advancing the sheet in the conveyance direction of the work while adsorbing and holding the end portion thereof in synchronization with the work, the surface of the work is covered with this sheet while gradually separating the sheet from the mount, By pressing the sheet covering the surface against the work through the press roller, the sheet can be automatically attached to the surface of the work.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, a wheel W of an automobile is used as a work to be adhered, and a protective film (sheet) for preventing the surface of the wheel W from being scratched or soiled during transportation or storage. ) Shows an example in which S is attached.

In the drawings, reference numeral 1 is a frame assembled in a rectangular frame type, and extends on both sides in the width direction above the frame 1 along the length direction of the frame 1 along its entire length, and the wheel 1 A pair of side guides 2 that abut on and guide the side surfaces of W are laid substantially parallel to each other, and the work separating portion 3, the sheet attaching portion 4, and the sheet pressing portion are arranged along the conveying direction of the wheel (work) W. 5 are continuously arranged.

The work separating section 3 is for intermittently repeating the stop of the wheel W conveyed from the previous process and the conveyance to the sheet sticking section 4, and the separation section belt conveyor device 6 and the separation stopper device. 7 and are provided.

In the separation belt conveyor 6 device, a conveyor drive shaft 8a rotatably supported at both ends of the frame 1 and a conveyor driven shaft 9a rotatably supported at the frame 1 at one end thereof. A pair of conveyor belts 10a stretched over, and a timing belt 12 stretched between the conveyor drive shaft 8a and the conveyor drive motor 11a.
a and the conveyor drive motor 11
The conveyor belt 10a is configured to travel with the rotation of a.

On the other hand, the separation stopper device 7 is mainly composed of a separation stopper piece 13 and a separation cylinder 14, and is located between the conveyor belts 10a, 10a and arranged below the separation belt 14a. The separation stopper piece 13 oscillates upward and protrudes above the conveyor belt 10a in accordance with the above operation, and the separation stopper piece 13 is brought into contact with the inner peripheral surface of the wheel W to stop the separation stopper piece 13. When the separation stopper piece 13 is swung downward and retracted below the conveyor belt 10a in accordance with the reverse operation of
It is designed to lift this stop.

As a result, the wheels W sent from the previous step are separated one by one through the separation stopper device 7, and the separated wheels W are separated by the traveling of the separating section belt conveyor 6 and the sheet sticking section. 4 is configured to be intermittently conveyed.

The sheet sticking section 4 peels off each sheet (protective film) S conforming to the shape of the wheel W, which is held by the mount 15 which has been subjected to a peeling treatment extending in a long shape as shown in FIG. While using this protective film S as a wheel W
This protective film (sheet) S has a pressure-sensitive adhesive layer laminated on the back surface of a flexible and highly conformable base material made of polyethylene having a thickness of, for example, about 50 μm. It is composed.

The sheet attaching section 4 is provided with a stand 16 extending vertically upward from the frame 1, and a vertical adjustment handle 18 rotatably supported by a flange 17 fixed to the upper end of the stand 16 is rotated. Accordingly, the face plate 19 and the sub face plate 20
Also, the labeler mounting beam 21 and the like are integrally moved vertically.

Further, on the face plate 19 and the sub-face plate 20, a pair of swing arms 22 projecting in the direction of the sheet press section 5 and a pair of swing arms projecting in the direction of the work separating section 3. One end of each moving arm 23 is rotatably supported, and the other end of the one swing arm 22 is provided with a base paper hook 24 that supports the mount 15 holding the protective film S in a wound state. The other end of the swing arm 23 is provided with a winding shaft 25 that winds the mount 15 after the protective film S is peeled off.

A feeding roller 26 and a pinch roller 27 are arranged below the base paper hook 24 so as to face each other, and a feeding motor 28 for driving the feeding roller 26 to rotate is provided. Two
With the rotation of 8, the feeding roller 26 rotates, and while sandwiching the mount 15 holding the protective film S between the feeding roller 26 and the pinch roller 27, the feeding roller 26 is sequentially fed downward from the base paper rack 24. ing.

On the other hand, a drive roller 29 and a pinch roller 30 are disposed below the winding shaft 25 so as to face each other, and a drive motor 31 for rotating the drive roller 29 is provided. The drive roller 29 rotates with the rotation of the drive motor 31, and the mount 15 from which the protective film S has been peeled is sandwiched between the drive roller 29 and the pinch roller 30, and the drive roller 29 is sequentially directed toward the winding shaft 25. It is designed to drive.

Further, between the drive roller 29 and the winding shaft 25 on the downstream side, a swingable swing arm 3 is swingable.
A dancer roller 33, which is rotatably supported, is arranged at the tip of the second roller 2. The dancer roller 33 applies tension to the mount 15 located there, and the winding shaft 25 rotates with the rotation of the winding motor 34. It is configured to rotate.

Then, between the feeding roller 26 and the drive roller 29 in the traveling path of the mount 15, the mount 15 is suddenly folded back to form a protective film S.
A peel plate 35 is arranged to separate the forward end of the protective film S from the mount 15 by the rigidity of the protective film S itself.

That is, the peel plate 35 has a flat plate shape, is attached to the tip of the peat plate base 37 and is disposed slightly downward along the conveying direction of the work, and has its free end formed at an acute angle. There is. On the other hand, the mount 15 that is fed downward by the feeding roller 26.
After ascending, it is guided downward again, travels along the lower surface from the upper surface of the peel plate 35 through this free end, and then reaches the drive roller 29.

As a result, the backing sheet 15 is folded back along the peel plate 35 toward the rear by approximately 180 °, but the protective film S tries to run linearly along the upper surface of the peel plate 35, and this protective film S The rigidity of S itself overcomes the adhesive force between the mount 15 and the protective film S, and this end is peeled off from the mount 15.

On the other hand, a laminating section belt conveyor device 36 is provided continuously to the separating section belt conveyor device 6. Similar to the separating belt conveyor device 6, the laminating belt conveyor device 36 has one end rotatably supported by the frame 1 and the conveyor drive shaft 8b whose both ends are rotatably supported by the frame 1. Pair of conveyor belts 1 suspended between the conveyor driven shaft 9b
0b and a timing belt 12b that is stretched between the conveyor drive shaft 8b and the conveyor drive motor 11b, whereby the conveyor belt 10b is configured to run as the conveyor drive motor 11b rotates. There is.

Here, as the conveyor drive motor 11b, for example, a variable speed motor whose speed can be controlled by inverter control or the like is used. Further, an air grid 40 for adsorbing and holding the end portion of the protective film S peeled off by the peel plate 35 is arranged in front of the peel plate 35 in the workpiece conveying direction, and the air grid 40 is also provided. The grid 40 is connected to an air grid moving device 41 so as to move back and forth along the transport direction of the wheel W.

That is, the air grid moving device 41 is
A pair of rollers 43 rotatably supported by a horizontally extending support plate 42, one end of which is connected to a mounting beam 60 described below.
And a timing belt 44 stretched between the rollers 43 and 43, and an air grid slide motor 45 that rotationally drives the one roller 43.
The timing belt 44 runs back and forth in accordance with the forward or reverse rotation of the air grid slide motor 45. The air grid 40 is connected to the connecting body 46 fixed to the timing belt 44, and the air grid 40 moves integrally with the timing belt 44 along the LM guide 47.

Here, the timing belt 44 and the conveyor belt 10b of the pasting belt conveyor device 36 travel in synchronism with each other, that is, the protective film S and the wheel W have the same positional relationship with each other in the conveying direction of the wheel W. The rotation speed of the conveyor drive motor 11b is controlled so as to move to.

Above the air grid 40, a press roller 51 rotatably supported at the free ends of a pair of swing arms 50 which can swing is arranged.
The base end of is connected to a rotary shaft 52 whose both ends are rotatably supported by the face plate 19 and the sub face plate 20, respectively. Further, one end of a connecting rod 53 is fixed to the rotary shaft 52, and a press roller elevating cylinder 54 is connected to the other end of the connecting rod 53.

As the plus roller elevating cylinder 54 contracts, the oscillating arm 50 oscillates downward, the press roller 51 descends, and as the plus roller elevating cylinder 54 extends, the oscillating arm moves. The press roller 51 rises by swinging 50 upward.

The press roller 51 is for pressing the protective film S against the surface of the wheel W by descending, so that it can follow the uneven shape of the wheel W, that is, the swing arm 50. It is configured so that the amount of swing can be controlled to adjust the tension by the press roller 51.

The sheet attaching section 4 configured as described above
First, the end portions of the protective film S, which are sequentially fed as the mount 15 travels, are peeled off from the mount 15 by abruptly folding back the mount 15 with the peel plate 35, and the end of the peeled protective film S is removed. The part is adsorbed and held by the air grid 40.

In this state, the air grid 40 is moved through the air grid moving device 41 along the conveying direction of the wheel W, and the conveying belt 10 of the pasting belt conveyor device 36 is moved.
It is moved in synchronism with the wheel W which is placed and conveyed on b. At this time, the protective film S held by the air glue 40 is adjusted so as to come to a predetermined attaching position with respect to the wheel W. deep.

After the air grid 40 has passed below the press roller 51, the press roller 51 is lowered via the press roller elevating cylinder 54, and the protective film S is pressed against the surface of the wheel W by the press roller 51. .

By the pressing by the press roller 51, a part of the protective film S is surely adhered to the surface of the wheel W, and then the suction holding by the air grid 40 is released and stopped.

Then, the wheel W passes below the press roller 51 as the conveyor belt 10b of the sticking section belt conveyor device 36 travels, so that the protective film S is stuck to the surface of the wheel W (temporary sticking). After the completion, the press roller 51 is raised and the air grid 40 is retracted.

The sheet press section 5 has a protective film S.
Is pressed against the surface of the wheel W over the entire surface of the protective film S, and the protective film S is attached to the surface of the wheel W over the entire area.

That is, as shown in FIG. 5, the protective film S
If the diameter D of the protective film S is shorter than the length L of the press roller 51, portions A that are not adhered to each other by pressing are generated on both sides of the protective film S. Therefore, in order to deal with such a portion where the diameter D of the protective film S is relatively long and cannot be pressed by the press roller 51, the sheet pressing portion 5 is provided.

The sheet press section 5 is provided with a gate-shaped mounting beam 60 protruding upward, and a rotary arm 61 is rotatably supported at the center of the horizontal beam of the mounting beam 60 and the rotation thereof is performed. Pressing cylinders 62 are vertically provided at both ends of the arm 61 in the lengthwise direction.

Further, at the lower end of each of the press cylinders 62, which is slightly larger than the protective film S via the support plate 63, and has an uneven shape relative to the surface of the wheel W, for example, sponge. A press head 64 is attached.

On the other hand, the pasting section belt conveyor device 3
6 is continuously provided with a press section belt conveyor device 65. In this press section belt conveyor device 65,
Similar to the separating belt conveyor device 6 and the pasting belt conveyor device 36, a conveyor drive shaft 8c whose both ends are rotatably supported by the frame 1 and a conveyor whose one end is rotatably supported by the frame 1 A pair of conveyor belts 10c suspended between the driven shaft 9c and
The timing belt 12c is provided between the conveyor drive shaft 8c and the conveyor drive motor 11c, and the conveyor belt 10c is configured to travel as the conveyor drive motor 11c rotates.

Further, a pair of press stopper devices 66 are located between the conveyor belts 10c and 10c and located below them.
And the work lifting plate 67 is arranged. Each of the press portion stopper devices 66 is mainly composed of a press portion stopper piece 68 and a press portion cylinder 69. When the press portion cylinder 69 is operated, the press portion stopper pieces 68 swing upward in a direction in which they open each other. Then, by projecting above the conveyor belt 10c and abutting the press portion stopper piece 68 against the inner peripheral surface of the wheel W, the wheel W is centered and stopped, and when the press portion cylinder 69 reversely operates. Press the stopper piece 68 to the conveyor belt 10c.
It is designed to be released by immersing it underneath.

The work elevating plate 67 is constantly urged upward by the elastic force of the spring 70. When the pressing portion stopper piece 68 swings and projects above the conveying belt 10c, the spring 70 is pushed. Rises with the elastic force of
When the press portion stopper piece 68 is retracted downward, it is configured to be lowered against the elastic force of the spring 70.

As a result, when the wheel W placed on the conveyor belt 10c of the press belt conveyor device 65 and conveyed reaches a predetermined position, the press stopper piece 68 is swung to convey the conveyor belt 10c. , The wheel W is centered and stopped, and the work elevating plate 67 is further raised by the elastic force of the spring 70 to raise it. Then, in this state, the press head 64 is moved down, and the protective film S is pressed against the entire surface of the lower surface of the wheel W to be stuck (secondary sticking).

After completion of the secondary attachment, the press portion stopper piece 68 is retracted below the conveyor belt 10c,
At the same time, the work elevating plate 67 is lowered to move the wheel W to the conveyor belt 10 of the press belt conveyor device 65.
The wheel W is carried out to the next step by placing it on the c and releasing the stop by the pressing part stopper piece 68.

Next, the operation of the above embodiment will be described. First, the wheels W that have been sequentially sent from the previous process,
The work separating unit 3 intermittently conveys the separated sheets to the sheet attaching unit 4, and the separation stopper piece 13 is moved through the separation cylinder 14 while the separation unit belt conveyor device 6 is running. This is performed by repeatedly projecting the conveyor belt 10a upward and retracting the conveyor belt 10a downward.

On the other hand, in the sheet adhering section 4, by rotating the feeding roller 26, the drive roller 29 and the take-up shaft 25, the mount 15 is made to travel, and as the mount 15 moves, as shown in FIG. As shown in (a), the protective film S held on the mount 15 is made to run along the upper surface of the peel plate 35, and the mount 15 is rapidly folded back along the free end of the peel plate 35, whereby the protective film S shown in FIG. ), The forward end of the protective film S is peeled from the mount 15. Then, as shown in FIG. 7C, the air grid 40 is operated to adsorb and hold the peeled end of the protective film S by the air grid 40.

At this time, as shown in FIG. 7 (a), the wheel W placed on and conveyed by the conveyor belt 10b of the laminating section belt conveyor device 36 is moved.
The end portion of the protective film S is positioned at a predetermined position of the air grid 40 in this state.
It is moved in synchronism with the wheel W along the transport direction of. Then, after the air grid 40 has passed below the press roller 51, the press roller 51 is lowered as shown in FIG. 3B, and the protective film S is pressed against the surface of the wheel W by this press roller 51. After that, the operation of the air grid 40 is stopped to release the suction holding of the end portion of the protective film S, and the movement of the air grid 40 is stopped.

Then, as shown in FIG. 6C, the wheel W placed on and conveyed by the conveyor belt 10b of the laminating section belt conveyor device 36 is conveyed.
Is passed below the press roller 51 to complete the operation of attaching the protective film S to the surface of the wheel W (temporary application), and then the press roller 51 is raised and the air grid 40 is retracted.

The wheel W, for which the work of applying the protective film S (temporary application) has been completed, is transferred to the belt conveyor device 65 of the press section and is conveyed along with the traveling of the conveyor belt 10c, which is the press head 64.
When it reaches a predetermined position immediately below, the press stopper piece 68 is swung upward to project above the conveyor belt 10c, thereby stopping the centering of the wheel W and further lifting the workpiece. The plate 67 is raised to raise it. Then, in this state, the press head 6
4 is lowered, and the protective film S is pressed against the entire surface of the lower surface of the wheel W to be stuck (secondary sticking).

After the completion of the secondary attachment, the press section stopper piece 68 is retracted below the conveyor belt 10c, and at the same time, the work elevating plate 67 is lowered so that the wheel W is placed on the conveyor belt 10c of the press section belt conveyor device 65. The wheel W is carried out to the next step by placing the wheel W in the next step and releasing the stop by the pressing part stopper piece 68, thereby completing a series of pasting work.

[0053]

Since the present invention has the above-mentioned structure,
By peeling the end portions of the sheets held on the mount sheet and sequentially supplied from the mount sheet, and advancing the sheets in synchronization with the workpiece in the conveyance direction of the workpiece while adsorbing and holding the peeled sheet end portions, While gradually separating the sheet from the mount, the surface of the work is covered with this sheet, and at the same time, the sheet covering the surface of the work is pressed against the work via the press roller. The sheet can be automatically attached to this surface without using a forming die suitable for the shape of the work.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a plan view with a part omitted.

FIG. 4 is a plan view showing a mount holding a protective film.

FIG. 5 is a plan view showing a state in which the protective film is primarily attached to the surface of the wheel.

FIG. 6 is a diagram for explaining an operation when peeling an end portion of a protective film and suction-holding the peeled end portion.

FIG. 7 is a diagram attached to an explanation of the primary attaching operation of the protective film on the wheel surface.

[Explanation of symbols]

 3 Work Separation Section 4 Sheet Pasting Section 5 Sheet Press Section 6, 36, 65 Belt Conveyor Device 7 Separation Stopper Device 10a, 10b, 10c Conveyor Belts 11a, 11b, 11c Conveyor Drive Motor 13 Separation Stopper Piece 15 Mount 24 Base Paper Cover 25 Rolls Taking-up shaft 26 Feeding roller 28 Feeding motor 29 Drive roller 31 Drive motor 33 Drive roller 33 Winding motor 40 Air grid 41 Air grid moving device 45 Air grid sliding motor 51 Press roller 54 Press roller lifting cylinder 62 Press cylinder 64 Press Head 66 Press unit stopper device 67 Work lift plate 68 Press unit stopper piece

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuaki Mimura 2-20-18 Harigagaya, Urawa-shi, Saitama Lintec Urawa Harigagaya Dormitory No. 202

Claims (2)

[Claims] 1. A sheet pasting method for pasting sheets, which are held on a long mount and sequentially supplied, onto the surface of a work conveyed on a conveyor, wherein the sheet is sharply folded back. The end of the advancing side of the sheet is peeled off from the mount, and the edge of the peeled sheet is adsorbed and held, and then the sheet is advanced in this held state in synchronization with the conveyance direction of the work, and the press roller A sheet pasting method, characterized in that the sheet is pressed against the work through the. 2. A sheet sticking device for sticking sheets, which are held on a long-sized mount and sequentially supplied, onto the surface of a work conveyed on a conveyor, wherein a mount path for the mount holding the sheets is provided. A peel plate is arranged on the way to rapidly fold the backing sheet to separate the forward end of the sheet from the backing sheet, and the peel plate can be moved back and forth along the carrying direction in the forward direction along the work carrying direction of the work. A sheet sticking apparatus, wherein a grit for adsorbing and holding an end of the peeled sheet is arranged, and a press roller is installed above the grit so as to be vertically movable and press the sheet against a work.