JPH0554819B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a laminator, and in particular to a technique that is effective when applied to a technique for press-bonding a film to a substrate.

[Prior Art] In a conventional laminator of this type, the position (temporary) of the advancing substrate is moved by a vacuum plate that moves perpendicularly to the advancing direction of the substrate by moving the leading end of the supply film, one end of which has been cut off, in a direction perpendicular to the advancing direction of the substrate. The film is transferred to the film attachment position) and is attached (referred to as ``tacking'') to the tip of the substrate whose progress is temporarily stopped. The substrate is advanced again to the crimping position, and the heat roll is moved perpendicular to the direction of travel of the substrate over the substrate to which the leading edge of the film has been temporarily attached, and the heat roll is pressed onto the substrate as the substrate advances. The film is crimped one after another, and when the board has advanced a predetermined length and approaches its terminal end, the advance of the board is temporarily stopped, and the film is cut in front of the board while in this stopped state. The remaining portion of the cut film that has not yet been pressed onto the substrate is attached to the substrate that has started moving again, and the substrate on which the film has been pressed is transferred to the next step. At this time, in preparation for laminating the next board, after the temporary bonding is completed, the vacuum plate is moved vertically away from the board (surface) and returned to the standby position, and after the main pressure bonding is completed, the heat roll is was moved vertically away from the board (surface) and returned to the standby position. (Refer to Japanese Unexamined Patent Publication No. 52-14876.) [Problems to be Solved by the Invention] However, in the conventional laminator, the substrate on which only the leading edge of the film is temporarily attached using the vacuum plate is transferred to the main body using a heat roll. It is necessary to advance the film to the crimping position, so if the temporary attachment is incomplete, part or all of the leading edge of the film stretched by the substrate will peel off from the substrate surface as the substrate advances, causing heat damage. There was a problem that the final crimping using the rolls could not be performed properly.

An object of the present invention is to provide a laminator having a roll whose tip end is used for actually crimping a film tack-attached to the tip of a substrate onto a substrate, in which the tack-attached film is moved as the substrate advances from the tack-attaching position to the main crimping position. The object of the present invention is to provide a technology that can smoothly transition to the main crimping by preventing peeling of the bonding material.

Another object of the present invention is to provide a laminator that improves work efficiency.

The above and other objects and novel features of the present invention are explained by the following description of the specification and the accompanying drawings.

[Means for Solving the Problems] The present invention provides a laminator equipped with a roll for permanently crimping a film, the tip of which is temporarily attached to the tip of a substrate, onto the substrate, in which the tip of the film is attached to the tip of the substrate. After the film is tacked to the tacking position, the roll is moved in the direction opposite to the direction of substrate movement and brought close to the tip of the substrate without advancing the substrate, and the tip of the film is tacked at the tacking position. a crimping mechanism for crimping the roll from above the substrate, and when the substrate advances and the lamination is completed by the final crimping of the substrate and film by the roll, the roll is moved in the direction of substrate movement and away from the temporary attachment position; It is characterized by comprising a roll retraction mechanism for returning the roll to the standby position.

[Operation] According to the above-mentioned means, after the leading edge of the supplied film is temporarily attached to the leading edge of the substrate, the roll is moved in the opposite direction to the substrate advancing direction without advancing the substrate. and bring it close to the edge of the board.
At the temporary attachment position, the roll is pressed onto the substrate on which the leading edge of the film is temporarily attached, and when the substrate advances and the lamination is completed by the final pressure bonding of the substrate and film by the roll, the roll is moved in the direction of substrate movement. However, since it is moved away from the temporary bonding position and returned to the standby position, it is possible to prevent the temporary bonding film from peeling off due to the board progressing from the temporary bonding position to the main crimping position, as in the past, and to smoothly transition to the main crimping position. It is possible to improve work efficiency.

[Embodiments of the Invention] Examples of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing the main parts of an autolaminator according to an embodiment of the present invention, and the plate thickness is usually 1.6 mm.
The substrate 1 of around mm is transported by the entrance side feed roll 2.
Films 4, 4, which are sent in the direction of the arrow 3 and sent from both the top and bottom sides of the substrate 1, are laminated by thermocompression bonding by a pair of heat rolls 5, 5, which are made of induction heating jacket rollers.
It is configured to be sent out by a feed roll 6.

Since these devices are arranged symmetrically on both the upper and lower ends of the substrate 1, the upper side of the substrate 1 will be described below for convenience of explanation.

In the feeding device for the film 4, a film formed of three layers including a photoresist layer as an intermediate layer, a polyethylene layer and a polyethylene terephthalate film layer on the surface is wound around a take-up roll 7, and polyethylene is removed from the film layer. A take-up roll 8 is used to remove the layer. Furthermore, in order to feed a predetermined length of film 4 to a predetermined length of substrate 1, a free roller 9 is used which moves its position up and down, and the film 4 is fed to a newly conveyed substrate 1. Each time the free roller 9 is moved, the free roller 9 moves under tension from a position 9a to a position 9b shown in the figure, and feeds the film 4 of a fixed length corresponding to the amount of displacement to the substrate 1. .

A main vacuum plate 10 for temporarily attaching a film is provided vertically below the free roller 9, and the main vacuum plate 10 is integrally formed with a degree of vacuum and has a suction force applied to its surface. is connected to the first air cylinder 11 (its piston rod) via a connecting member 12 so as to be movable in the vertical direction, and when the internal vacuum level is communicated with a vacuum pump (not shown), the main cylinder The film plate 10 is configured to attract the film 4. The first air cylinder 11 is connected to a second air cylinder 15 via connecting members 14a and 14b, and the second air cylinder 15 also has a connecting member 1.
4a and 14b, the rotary cutter device 16 and a sub-vacuum that faces the cutter 16a of the cutter device 16, has an adsorption effect on its surface, and is located below the tip 10a of the main vacuum plate 10. The air plate 17 is connected via a piston rod 18a to a third air cylinder 18 which operates in the horizontal direction. The tip end 10a of the main vacuum plate 10 has an arcuate cross section, and has a built-in heater 13 for temporary attachment.

Further below the sub-vacuum plate 17, a nozzle plate 19 is provided at a rear position in the advancing direction of the heat roll 5 and the substrate 1 facing thereto.
9 prevents the rear end of the film 4 cut by the cutter 16a from hanging down, and allows the rear end of the cut film 4 to be properly attached to the substrate 1 without bubbles or wrinkles. In order to ensure the effect, a small amount of air is blown toward the heat roll 5.

FIG. 2 is an enlarged cross-sectional view of a main part showing an embodiment of the driving device for the heat rolls 5. The pair of heat rolls 5, 5 are connected to a pair of transmission gears 2 that mesh with each other.
1 and 21 are respectively attached to a pair of frames 23 and 23 so as to be rotationally driven via an intermediate gear 22, and both frames 2
3 and 23 are mutually oscillated by a fluid pressure cylinder 24 about the rotation axis of the transmission gear 21 so that the opposing distance between the pair of heat rolls 5 and 5 is adjusted. One of the transmission gears 21 is connected to a rotating shaft of a drive motor. These mechanisms are connected to the piston 26 of the fluid pressure cylinder 25,
It is attached via a moving body 27, and is configured to move in parallel to the traveling direction of the substrate 1 by the action of the fluid pressure cylinder 25. In addition,
In the figure, 28 indicates a guide member.

The operation order according to this embodiment is as follows. Note that, for convenience of explanation, the upper side of the substrate will be described, but exactly the same operation is performed on the lower side.

() Of the film 4 composed of the three layers wound on the take-up roll 7, after the polyethylene layer is taken up on the take-up roll 8, the leading end of the film 4 is first manually moved through the free roller 9. , the tip 1 of the lower main vacuum plate 10
0a, that is, pull it down to the cutter 16a position.

() When the substrate 1 is conveyed to a fixed position by the entrance side feed roll 2, the inside of the sub-vacuum plate 17 is communicated with a vacuum pump, so that the pulled-down film 4 is (When a continuous operation is being performed, the tip of the film 4 cut by the cutter 16a) is sucked, and the tip of the film 4 is moved back by the third air cylinder 18 while being sucked. The tip is wrapped around the arcuate surface of the tip 10a of the main vacuum plate 10 where the vacuum suction action is working. At the same time, a film of a length that allows some leeway in the stroke of the main vacuum plate 10 is slackened by the free roller 9.

When the leading end of the substrate 1 is conveyed to the temporary attachment position almost directly below the main vacuum plate 10, the rotation of the entrance side feed roll 2 is stopped, and thereby the substrate 1 is stopped. Next, two pressing members hang down (not shown) and press the substrate 1.

() The first air cylinder 11 is operated and the main vacuum plate 1 has an adsorption effect.
The film 4 adsorbed to the arcuate surface of the tip 10a, in particular, is lowered to the position of the substrate 1 and is temporarily thermocompressed (temporarily attached) to the substrate.

() After temporarily attaching the tip of the film 4 to the substrate 1, the vacuum adsorption action of the main vacuum plate 10 is temporarily stopped, and with the film 4 free, the main vacuum plate is attached by the first air cylinder 11. The plate 10 is lifted upward from the substrate 1 and returned to the standby position. At this time, the second
The air cylinder 15 also operates, and the rotary cutter device 16, subvacuum plate 17,
The connecting member 14a of the first air cylinder 11 also moves upward away from the substrate 1 and returns to the standby position.

() At the same time that the main vacuum plate 10 is separated from the substrate 1 by a certain distance upward, the heat roll 5 first moves the substrate 1 under the action of the fluid pressure cylinder 25 (FIG. 2) as shown by the arrow A in FIG. Move in the opposite direction to the direction of movement, approach the substrate 1 at the temporary attachment position, and then move the hydraulic cylinder 2
4 (FIG. 2), the substrate 1 is clamped as shown by arrow B in FIG. Heat compression bonding (main compression bonding)
And send it out. At this time, the vacuum suction action of the sub-vacuum plate 17 is stopped, and the sub-vacuum plate 17 returns to its original position on the left side of the figure, facing the cutter 16a.

() With the film 4 sufficiently clamped by the heat roll 5 (during this time, the film 4 is laminated continuously on the substrate 1), the free roller 9 returns to its original position 9a.

() When the film 4 is fed a certain amount (a certain length), the second air cylinder 15 is activated,
The entire device begins to descend and approach the substrate 1.
At this time, the film 4 is vacuum-adsorbed by the main vacuum plate 10 and the sub-vacuum plate 17, and the second air cylinder 15
The main vacuum plate 10 and the sub vacuum plate 17 descend at a speed greater than the lamination speed of the film 4 onto the substrate 1 (equal to the circumferential speed of the heat roll 5). When descending to a certain position (the lowest point), the main vacuum plate 10 and the sub vacuum plate 17 stop descending. At this point in time, the film 4 is slack between the subvacuum plate 17 and the heat roll 5. During the period until the part of the film 4 in this slack state is completely sent to the heat roll 5, the part of the film located in the cutter unit is in a stopped state, so a rotary disk-shaped cutter (rotary cutter) 16a By moving the film 4 in the width direction of the continuous film 4, the film 4 in a stopped state is cut.

In addition, the cutter 1 is integrated with the main vacuum plate 10 and the sub vacuum plate 17.
6a is lowered, and its lowering speed is set to be substantially constant or slightly higher than the circumferential speed of the heat roll 5, and the cutter 16a is moved in the width direction of the continuous film during the downward stroke process. It is also possible to cut it while doing so. In this case as well, since the film 4 and the cutter 16a located in the cutter unit do not move relative to each other in the film feeding direction, the film can be cut in the same way as in the case of the film in the stopped state.

() In order to prevent the film 4 cut as described above from hanging down, and to ensure a normal pressure bonding action without bubbles or wrinkles when the film 4 is thermocompression bonded to the substrate at the rear end of the cut film. , air is blown out from the nozzle plate 19 toward the heat roll 5. Note that by adjusting the amount of air blown from the nozzle plate 19, etc., the pressure flow rate and direction of the minute air can be adjusted.

() Thereafter, the clamping action of the heat rolls 5 is released, and the pair of heat rolls 5, 5 move away from each other in the substrate advancing direction and return to the original standby position. At this time, the first to third air cylinders 11, 18 have been returned to the position of the next preparation stage (the position shown in FIG. 1).

In the above embodiment, a free roller 9 that receives a tension action is used to smoothly feed the film 4, but this free roller is not necessarily necessary, and other means can be used instead. Of course, the design of the moving device can be changed as appropriate, such as using hydraulic cylinders instead of the first to third air cylinders 11 and 18. Note that the arcuate curved surface portion formed at the tip of the main vacuum plate 10 also
The shape may be any shape that allows the tip of the film 4 to be temporarily attached to the substrate 1, and the shape is of course not limited to an arcuate cross section.

〔Effect of the invention〕

As explained above, according to the present invention, after the leading end of the supplied film is temporarily attached to the leading end of the substrate, the roll is moved in the opposite direction to the substrate advancing direction without advancing the substrate. Move it close to the tip of the substrate, and at the temporary attachment position, press the roll over the substrate to which the tip of the film has been temporarily attached, and the substrate advances and the roll completes the lamination by final crimping of the substrate and film. Then, the roll is moved in the direction of board movement, away from the temporary bonding position, and returned to the standby position, thereby preventing the temporary bonding film from peeling off as the substrate progresses from the temporary bonding position to the main crimping position, as in the past. This allows a smooth transition to the main crimping.

[Brief explanation of the drawing]

FIG. 1 is a side view showing essential parts of an autolaminator according to an embodiment of the present invention, and FIG. 2 is an enlarged view of essential parts showing an embodiment of a heat roll drive device used in the autolaminator of FIG. 1. FIG. In the figure, 1... substrate, 4... film, 5... heat roll, 10... main vacuum plate, 10a... tip of main vacuum plate, 11... first air cylinder, 15... third 2
Air cylinder, 16... Rotary cutter device, 17... Subvacuum plate, 18...
Third air cylinder, 19... is a nozzle plate.

Claims (1)

[Scope of Claims] 1. In a laminator equipped with a roll for permanently crimping a film whose leading end is temporarily attached to the leading edge of a substrate onto the substrate, after the leading edge of the film is temporarily attached to the leading edge of the substrate, , without advancing the substrate, on the contrary, move the roll in the opposite direction to the substrate advancing direction to bring it close to the leading edge of the substrate, and at the tacking position, move the leading edge of the film from above the tacking substrate. A crimping mechanism that crimps the rolls, and a roll retraction mechanism that moves the rolls in the direction of substrate movement, away from the temporary attachment position, and returns them to the standby position when the substrate advances and the lamination is completed by the final crimping of the substrate and film by the rolls. A laminator characterized by comprising a mechanism. 2. The crimping mechanism includes a first fluid pressure cylinder for moving the roll substantially perpendicularly to the surface of the substrate, and a moving body to which the first fluid pressure cylinder is attached parallel to the substrate traveling direction. 2. The laminator according to claim 1, further comprising a second hydraulic cylinder for moving the laminator. 3. The laminator according to claim 1 or 2, wherein the crimping mechanism also serves as the roll retraction mechanism.