JPH0316906B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a laminator that continuously and automatically performs the work of pressing a film cut into a predetermined length onto a substrate.

(Prior art) Conventionally, in a laminator that attaches a film cut to a predetermined length to a substrate, the leading end of a supplied film, one end of which has been cut in advance, is moved to a position on the substrate by a vacuum plate. The film is transferred and attached to the edge of the substrate, and the substrate to which the edge of the film is attached is crimped with a pair of rolls.As the substrate advances, the film is sequentially crimped onto the substrate with the rolls, so that the substrate is When the film has traveled a predetermined length and approaches its terminal end, the roll and substrate are temporarily stopped, and the film is cut in front of the substrate in the stopped state, and the cut film is not yet crimped to the substrate. The remaining part of the film is pressed onto the substrate that has started moving again, and the substrate on which the film has been crimped is transferred to the next step.

(Refer to Japanese Unexamined Patent Publication No. 14876/1983) (Problems to be Solved by the Invention) In the above-mentioned conventional device, the rear end of the cut film hangs irregularly when it leaves the cutter. There was a drawback that the rear end of the film could not be properly crimped onto the substrate without wrinkles or bubbles.

(Means for Solving the Problems) In order to eliminate the drawbacks of the above-mentioned prior art, the present invention comprises: pressing a film cut into a predetermined length onto a substrate using a pressing roll facing the substrate;
The laminator is configured to move a substrate on which a film is crimped, and a laminator is provided with a film suction member extending in a direction parallel to the rotation axis of the crimping roll;
Both ends of the film suction member are fixed to one end of each of a pair of support arms arranged in the radial direction of the pressure roll, and the other ends of each are fixed to a support arm mounting member provided on the rotation axis of the pressure roll, A film suction member rotation drive means is provided rotatably near the outer circumferential surface of the pressure roll and rotates the film suction member holding the rear end of the film at a rotational speed equal to or less than the circumferential speed of the pressure roll. It is characterized by:

(Function) With the present invention configured as described above, the film sent from the take-up roll is laminated on the substrate by the pressure roll, and at the stage when a certain amount of film has been fed, When the cut film is cut by a cutter device provided near the pressure roll, the rear end of the cut film remains supported by a film support device provided near the circumferential surface of the pressure roll. It is moved close to the substrate along the circumferential surface of the pressure roll at a speed less than or equal to the circumferential speed of the pressure roll.

At this time, the front end of the film is forcibly fed out while being crimped by the crimping roll, so the rear end of the film that has been moved close to the substrate as described above will be affected even if the supporting force is exerted on the support device. It can be detached from the support device and delivered onto the substrate without any problem even when the substrate is in use.

In this way, the rear end of the film after being cut does not sag, so that no air bubbles or wrinkles occur in the film that is pressed onto the substrate by the pressure roll.

In addition, as mentioned above, the moving speed of the film support device is set to be less than the circumferential speed of the pressure roll, so while the rear end of the film is moving, the film is always under tension by the pressure roll. can be,
Therefore, the film does not sag or wrinkle.

The film support device is returned to its original position after the rear end of the film is separated from the support device and sent out by the pressure roll.

(Example) Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an enlarged perspective view of essential parts of an embodiment of a support device for the rear end of a film after cutting in the laminator according to the present invention shown in FIG. Only one side of is shown. In the figure, reference numeral 1 indicates a substrate that is fed in the direction of arrow 3 by a feed roll (2 in FIG. 3), and a film 4 that is fed from above is placed on the substrate 1 by a (pair of) induction heating jacket rollers. It is configured so that it is crimped by the crimping roll 5 and sent out to the left in the figure by the feed roll (6 in Fig. 3) (note that this point is the same as the conventional one). , a film suction member 20 extending in a direction parallel to the rotation axis of the pressure roll 5 is provided, and both ends of the film suction member 20 are fixed to one end of each of a pair of support arms 22 disposed in the radial direction of the pressure roll 5. The other end of each is rotatably provided along the vicinity of the outer circumferential surface of the pressure roll 5 to a gear (support arm attachment member) 25 that is rotatably provided on the rotation axis of the pressure roll 5. .

The film suction member 20 has a length that is almost the same as the width of the pressure roll 5, and is made of a hollow body having a substantially triangular cross section. It is supported by a support arm 22 provided parallel to the plane. The film suction member 20 is disposed inside the arm 22.
A through hole 23 communicating with the hollow chamber is bored,
By communicating with an external vacuum pump via a conduit 24, the interior of the film suction member 20 is evacuated. Also, the arm 22
is rotated by meshing a gear 25 rotatably disposed on the rotating shaft of the roll 5 with a rack 27 driven by a hydraulic cylinder 26,
The film suction member 20 is moved along the circumferential surface of the pressure roll 5 at a speed lower than the circumferential speed of the pressure roll 5. That is, the moving distance of the film suction member 20 due to the rotation of the support arm 22 is made to be substantially equal to the moving distance on the circumference due to the rotation of the pressure roll 5 (this is equal to the distance between the film laminators due to the rotation of the pressure roll 5). Either the film suction member 20 is moved at a speed that maintains the rear end 4a of the film (hereinafter referred to as case P), or the support arm 2
The film suction member 20 is moved at a speed such that the movement distance of the film suction member 20 due to the rotation of 2 is smaller than the movement distance on the circumference due to the rotation of the pressure roll 5.
is moved while being adsorbed by the rear end 4a of the film (hereinafter referred to as case Q).

FIGS. 2A to 2D are explanatory views showing how the rear end of the film is moved after cutting by the film suction member 20, and FIG. At the same time, the rear end 4a of the film is inserted into the suction hole 2 of the film suction member 20.
Figure B shows the film suction member 20 moving about 45 degrees at a speed less than the circumferential speed of the pressure roll 5 by the arm 22 while adsorbing the rear end 4a of the film. The state is shown in Figure C.
Further move about 45 degrees and place the rear end 4a of the film on the substrate 1.
Figure D shows a state in which the film 4 on the substrate 1 is forcibly sent out in the direction of the arrow by the pressure roll 5. At this time, the film suction member 20
Rack 27 driven by hydraulic cylinder 26
By rotating the support arm 22 in the opposite direction via the gear 25, the support arm 22 returns from the position shown in Figure B to the original position shown in Figure A.
Switching of the direction of movement of the rack 27 is automatically performed using means such as a combination of a rack end position detection sensor and a timer.

After sucking the rear end 4a of the film at the position of the film suction member 20 shown in FIG. If the rear end 4a of the film is moved to a nearby position (the position shown in FIG. 2C) while being attracted, the film 4 will not sag or wrinkle while the rear end 4a of the film is being moved.

(2) The film suction member 20 is moved to the case Q.
In this manner, move the rear end portion 4a of the film to the position shown in FIG. 2C.
When the film 4 is moved while adsorbed, the film 4 is constantly pulled in accordance with the difference between the rotational speed of the film suction member 22 and the rotational circumferential speed of the pressure roll 5 while the rear end portion 4a of the film is moving. Therefore, the film 4 gradually slips at the rear end 4a of the film, so that the film 4 to be laminated does not sag or wrinkle.

In short, according to this embodiment, the film suction member 20 moves near the contact area between the film 4 and the pressure roll 5 at a speed lower than the circumferential speed of the pressure roll 5 while adsorbing the rear end portion 4a of the cut film. Since the rear end 4a of the film is moved to the position shown in FIG. 4 is under tension by the pressure roll 5, so that the film does not sag or wrinkle.

Note that the second position where the suction member 20 is closest to the substrate
At the position shown in FIG.
Even if the suction action by the vacuum is continued, the pulling action by the pressure roll 5 is stronger, so the release action is not affected. Note that the suction action by the vacuum may be interrupted at the time of detachment.

In addition, the shape of the suction member 20 is as shown in FIG.
It is preferable that the film 4 is removed from the suction member 20 in the state closest to the substrate 1, as shown in FIG.

FIG. 3 shows the main parts of a laminator that uses the film suction member after cutting according to the present invention shown in FIG. 1, and cuts the film in a continuous feeding state without stopping the feeding of the film and substrate. In this side view, the same reference numerals as those shown in FIG. 1 indicate the same or similar parts. Note that since this device is constructed symmetrically on both sides of the upper and lower sides of the substrate 1, for convenience of explanation, the upper side of the substrate 1 will be explained.

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

A main vacuum plate 10 is provided vertically below the free roller 9. The main vacuum plate 10 has a vacuum chamber integrally formed thereon and applies a suction force to its surface.
The vacuum plate 1 is connected to the first air cylinder 11 (the piston rod thereof) via a connecting member 12 so as to be movable in the vertical direction, and when the vacuum chamber therein is communicated with a vacuum pump (not shown).
0 to attract the film 4.

The first air cylinder 11 has a connecting member 14
A and 14b are connected to a second air cylinder 15, and the second air cylinder 15 is connected to a rotary cutter device 16 and a cutter 16a of the cutter device 16 via connecting members 14a and 14b. facing and having an adsorption effect on the surface,
A sub-vacuum plate 17 located below the tip 10a of the main vacuum plate 10;
The sub-vacuum plate 17 is connected to a third air cylinder 18 which operates in the horizontal direction via a piston rod 18a. Note that the tip portion 10a of the main vacuum plate 10 is formed to have an arcuate cross section, and has a built-in heater 13.

Further below the sub-vacuum plate 17, a pressure roll 5 is attached to which a film suction member 20, which is an embodiment of the film support device according to the present invention, is attached.

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.

(i) Of the film composed of the three layers wound on the roll 7, the polyethylene layer is wound on the winding roll 8.
After winding up, the leading end of the film 4 is first manually pulled down to the lower end 10a of the main vacuum plate 10, ie, to the cutter 16a, via the free roller 9.

(ii) When the substrate 1 is conveyed to a fixed position by the conveyor 2, the inside of the sub-vacuum plate 17 is communicated with a vacuum pump, so that the pulled-down film 4 (continuously When the operation is being performed, the cutter 16a
By sucking the tip of the cut film 4) and retracting it while being sucked by the third air cylinder 18, the tip of the film 4 is transferred to the main vacuum, which has a vacuum suction effect. Wrap it around the arcuate surface of the tip 10a of the plate 10. 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.

(iii) The first air cylinder 11 is operated and the main vacuum plate 1 has an adsorption effect.
0, especially the film 4 attached to the arcuate end 10a.
is lowered to the position of the substrate 1 and temporarily thermocompressed onto the substrate 1.

(iv) After the leading edge of the film is temporarily thermocompressed, the vacuum adsorption action of the main vacuum plate 10 is temporarily stopped, and the main vacuum plate 10 is moved by the first air cylinder 11 with the film 4 free. Lift upward from board 1. At this time, the second air cylinder 15 also operates, and the rotary cutter device 16, sub-vacuum plate 17, and mounting base 14a of the first air cylinder 11 also move upward and away from the substrate 1 together.

(v) At the same time as the main vacuum plate 10 moves away from the substrate 1 by a certain distance, the heat roll 5
approaches the substrate 1, rotates while clamping the substrate 1 to which the leading end of the film 4 is temporarily thermocompression bonded, and thermocompression bonds the film 5 and sends 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.

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

(vii) When a certain amount (a certain length) of the film 4 is fed, the second air cylinder 15 is activated, and the entire apparatus 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 during the downward stroke by the second air cylinder 15, the rotary cutter 16a is moved relative to the film 4 in a direction perpendicular to the plane of the paper. While cutting, the film 4 is cut. In addition, the second
The piston speed of the air cylinder 15 is set to be slightly higher than the circumferential speed of the heat roll 5, and the film is slackened by this amount to provide a margin.

(viii) In order to prevent the cut film 4 from sagging as described above and to properly press the rear end of the cut film to the substrate without air bubbles or wrinkles, the film support device that works in conjunction with the pressure roll 5 is used. This is done by the film suction member 20, which is one of the two.

As described above, it is possible to cut the film in a continuous feeding state without stopping the feeding of the film and the substrate, thereby eliminating the influence of the heat of the pressure roll on the film and improving work efficiency. Can be done.

In the above embodiment, the film suction member that supports the rear end of the film using suction force was described as the film support device, but this is only one example, and FIG. It shows the state where the film 4 is passing continuously, and B is the second
A state corresponding to Figure C is shown. ), a blowing member 30 having compressed gas blowing holes 31 formed on one side.
and a receiving member 32, the gap between the blowing member 30 and the receiving member 32 is variable, and the film 4 is passed through this gap, and when the rear end of the cut film is located in the gap, Blowout member 30
is displaced (advanced) from position A so as to fill the gap, and blows out compressed gas from the blow-off hole 31 to move the film 4 to the receiving member 3 as shown in position B.
2 may be pressed and supported. In addition, a gripping member is used instead of the jetting member 30, and when supporting the rear end of the cut film, the gripping member is moved closer to the receiving member to gently grip the rear end of the film. You can do it like this.

(Effects of the Invention) As explained above, according to the present invention, while the rear end of the cut film is supported by the film support device, the cut film is placed on the substrate at a speed lower than the circumferential speed of the pressure roll 5. By moving the film to a position close to the contact area between the film and the pressure roll,
It is possible to prevent the cut film from hanging and to ensure normal pressure bonding of the rear end of the cut film to the base without bubbles or wrinkles.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of essential parts showing an embodiment of a support device for the rear end of a film after cutting in a laminator of the present invention; FIGS. 2A to D are explanatory views showing the operating state of FIG. 1; The figure is a side view of the main parts of a laminator using the support device for the rear end of the film shown in Figure 1;
FIGS. 4A and 4B are explanatory diagrams showing the operating state of another embodiment of the support device for the rear end of the film. DESCRIPTION OF SYMBOLS 1...Substrate, 4...Film, 4a...Film rear end, 5...Crimping roll, 20...Film suction member, 21...Suction hole, 22...Support arm, 30...Blowout member, 31 ...Blowout hole, 32...
...Receiving member.

Claims (1)

[Claims] 1. In a laminator in which a film cut into a predetermined length is crimped onto a substrate by a crimping roll facing the substrate, and the substrate with the film crimped is moved, the film is crimped in a direction parallel to the rotation axis of the crimping roll. An extending film suction member is provided, both ends of the film suction member are fixed to one end of each of a pair of support arms disposed in the radial direction of the pressure roll, and the other ends of each of the support arms are provided on the rotation axis of the pressure roll. The support arm mounting member is rotatably installed near the outer peripheral surface of the pressure roll, and a film suction member that holds the rear end of the film is rotated at a rotational speed less than the circumferential speed of the pressure roll. A laminator characterized by being provided with member rotation driving means.