JPS5951759B2 - Continuous film lamination device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous film laminating device, and more specifically, in the manufacturing process of flexible printed boards, a base film is attached to a base film on which a wiring pattern of copper foil is formed for the purpose of insulation and protection. The present invention relates to a continuous film laminating device suitable for laminating overlay films of different thicknesses.

2. Description of the Related Art As a conventional film laminating apparatus, the one shown in FIG. 1A is known.

According to this device, holes 2 are formed in advance along both ends of the base film 1 (see Figure 1). Similarly, holes (not shown) are formed along both ends of the overlay film 3 to be attached to the base film 1. Then, the overlay film 3 is superimposed on the base film 1 by the guide roll 4, and the holes 2 of the base film 1 and the holes of the overlay film 3 are hooked onto the claw piece 5a of the positioning ring 5, and these holes are After matching each other, the sheets are sent to a laminator 6 and pasted together by the laminator 6. However, in the case of the above-mentioned apparatus, although the overlay film 3 can be laminated continuously to the base film 5 film 1, if the thicknesses, materials, etc. of the films 1 and 3 are different, when laminating them together in the laminator 6, Due to differences in thermal expansion coefficients and pitch errors between patterns, the holes 2 of the base ゜θ film 1 and the holes of the overlay film 3 may be misaligned with each other, making it difficult to place the overlay film 3 correctly on each pattern 1a of the base film 1. It has the disadvantage that it cannot be aligned and pasted together.

■5 The one shown in Figure 2A is also known.

According to this device, when the base film 8 is fed from the base film 2 feeder 7 to the alignment table 9, the pilot pin 10 provided on the alignment table 9 causes the hole 11 formed in the base film 8 (see Figure 2). ) is detected and penetrates through the hole 11. At this time, the overlay film 13 is inserted into the pattern 1 of the base film 8 by inserting the pilot pin 10 through the hole 14 of the overlay film 13 cut in advance to the size of the pattern 12 of the base film 8.
2 and temporarily attached using the cartridge heater 15. Thereafter, the pilot pin 10 is lowered, and the base film 8 is sent to the laminator 17 by the pinch rolls 16, where the overlay film 13 is completely pasted onto the base film 8, and then wound up by the winder 18.
However, in the above-mentioned apparatus, the overlay film 13 cut in advance into the size of the pattern 12 of the base film 8 is manually cut into the base film 8 one by one.
Since the process is superimposed on each pattern 12, there is no risk of misalignment as in the case shown in Fig. 1A, but on the other hand, it has the disadvantage that it is very inefficient because it is done manually and that it places a heavy burden on the operator. be.

The present invention has been made in view of the above circumstances, and its purpose is to provide a continuous film laminating device that can efficiently and precisely laminate films without causing positional deviations. be.

An embodiment of the present invention will be described below with reference to the drawings.

In Figure 3, 20 is a base film feeder, and 21
is a film winder, which includes a base film feeder 20 and a film winder 21. Between the base film feeder 20 and the film winder 21, there is an overlay film feeder 23 and an alignment table 24.
and a laminator 25 are installed in sequence. Note that the overlay film feeder 23 is installed on a pedestal 26.
and is positioned one step above other devices. A base film 30 is wound around the base film feeder 20 . As shown in FIG. 5, this base film 30 has wiring patterns 31 made of copper foil formed thereon, and a pair of alignment holes 32, 32 formed in the margins between each wiring pattern 31. The base film is then sent out from the base film sending device 20 to the alignment table 24. In addition to the overlay film feeder 23, a pinch roll 34 is mounted on the pedestal 26.
is provided with an overlay film feeder 2.
A separator winder 35 is provided between the pinch roll 34 and the pinch roll 34 .

An overlay film 36 for pasting onto the base film 30 is wound around the overlay film feeder 23 .

This overlay film 36 has alignment holes 3 formed in the base film 30 as shown in FIG.
A pair of positioning holes 37, 37 corresponding to 2, 32 are formed, and an adhesive (not shown) is applied to the surface to be overlapped with the base film 30, and the adhesive layer is coated with an adhesive (not shown). A separator 38 is temporarily attached. Further, the pinch roll 34 transfers the overlay film 36 from the overlay film feeder 23 to the positioning table 24.
It is configured to be sent to Further, the separator winder 35 is configured to wind up the separator 38 temporarily attached to the overlay film 36 at the same time as the overlay film 36 is sent out from the overlay film feeder 23. Also, between the pinch roll 34 and a guide roll 39 that guides the overlay film 36 sent out by the pinch roll 34 to the alignment table 23, detectors 40a and 40b of a slack control section 40 that controls the pinch roll 34 are provided. is provided. This slack control section 40 has its detectors 40a, 40
The slack state of the overlay film 36 is detected at step b, and the pinch rolls 34 are controlled to feed the overlay film 36 to the alignment table 24 in a state of no tension. The positioning table 24 is provided with a guide roll 41 and a guide roll 42 at its inlet end and outlet end, respectively, and between the guide rolls 41 and 42 there is a distance between the inlet end and the outlet end. A guide roll 43, a pilot pin member 44, a film pressing member 45, a cartridge heater 46, a cutter member 47, and a pinch roll 48
are provided in sequence.

Here, the guide roll 41 guides the base film 30 so that it runs along the table surface of the alignment table 24.

Further, the guide roll 43 is arranged to hold the overlay film 3
6 guides the base film 30 traveling on the table surface of the alignment table 24 so that it is superimposed on the base film 30. The pilot pin member 44 also includes a pair of pilot pins 50, 50 and 5.
The pilot pins 50, 50 protrude from the table surface of the positioning table 24 to insert the overlay h into the positioning holes 32, 32 of the base film 30.
The positioning holes 37, 37 of the film 36 are made to match. The film holding member 45 is composed of a film holding piece 52 and an air cylinder 53 that operates the film holding piece 52. The film holding piece 52 faces the pile rod pin 50 and is synchronized with the pilot pin 50. The overlay film 3 is placed in the positioning holes 32, 32 of the base film 30 using a pilot pin 50.
When the alignment holes 37 and 37 of 6 are aligned, the base film 30 and the overlay film 36 are pressed against the table surface of the alignment table 24 by the film holding piece 52. The cartridge heater 46 is swingably supported by a pin 54, and is configured to heat the overlay film 36 with a heating surface 55 at its lower end during operation so as to temporarily attach it to the base film 30. Further, the cutter member 47 is constructed by attaching a cutter 57 to a cutter body 56 installed in parallel with the guide rollers 41 and 42, so that the cutter 57 is attached during operation.
moves along the cutter body 56 and cuts only the overlay film 36. Further, the pinch roll 48 is connected to the pinch roll 48 via a clutch 58.
It is connected to a motor 59 that drives the. In addition, the pilot pin member 44, the film pressing member 45, the cartridge heater 46, the cutter member 47, and the pinch roll 48
The operation is controlled by a control device (not shown).

A dancer arm 64a and a detector 64b of the slack control section 64 are provided between the alignment table 24 and the laminator 25.

The sag control section 64 detects the sagging state of the base film 30 to which the overlay film 36 is temporarily attached on the positioning table 24 from the inclination angle of the dancer arm 64a, and controls the speed of the laminator 25. It's getting old. The laminator 25 is configured to completely laminate the overlay film 36 to the base film 30 using a pair of upper and lower heated pressure rolls 65a and 65b while the speed is controlled by a sag control section 64.

The film winder 21 takes over an overlay film 36.
The base film 30 on which the base film 30 is laminated is wound up. Next, the operation of the above device will be explained. The base film 30 is sent out from the base film sending device 20 to the alignment table 24.

On the other hand, the overlay film 36 is sent out from the overlay film sending device 23. At this time, the separator 38 temporarily attached to the overlay film 36 is wound up by the separator winding machine 35. The overlay film 36 from which the separator 38 has been peeled off is transferred to the pinch roll 3
4, the upper and lower detectors 40a, 40 of the slack control unit 40
b, and is sent out to the alignment table 24 while being guided by the guide rolls 39. At this time, when the overlay film 36 is pulled from the positioning table 24 side and approaches a tensioned state, this is detected by the detector 40a above the slack control section 40, and the feeding speed of the pinch roll 36 is increased. On the other hand, overlay film 3
6 is too slack, this is detected by the detector 40b below the slack control section 40, and the feeding speed of the pinch roll 34 becomes slow. Therefore, overlay film 36
is always sent to the alignment table 24 in a state of notation. Overlay film 36 sent to positioning table 24 in a state of non-tension
is guided by the guide roll 43 and superimposed on the base film 30 sent out to the alignment table 24.

And base film 30 and overburley film 3
6 run on the table surface of the alignment table 24 by a pinch roll 48 in an overlapping state. Then,
The pilot pin 50 of the pilot pin member 44 protrudes and passes through the alignment holes 32, 32 of the base film 30 and the alignment holes 37, 37 of the overlay film 36, and connects with these alignment holes 32, 32. 37,3
Match 7. At this time, the film holding piece 52 of the film holding member 45 also moves downward in synchronization with the pilot pin 50 to press the base film 30 and overlay film 36 against the table surface of the alignment table 24. In this way, each positioning hole 3 of the base film 30 is
2 and 32 and the respective alignment holes 37 and 37 of the overlay film 36 one by one, and perform alignment so that the overlay film 36 is correctly overlapped for each wiring pattern 31 of the base film 30. Then, when a preset number, for example, five wiring patterns 31 have been aligned, the pilot pin 50 is stopped with it protruding, the film holding piece 52 is stopped with it being lowered, and the pinch roll 4 is stopped.
The clutch 58 of No. 8 is released to cut off the communication with the motor 59, and the base film 30 and overlay film 36 are stopped on the table surface of the alignment table 24. In this state, the cartridge heater 46 and the cutter member 4
7 to temporarily attach the overlay film 36 to the base film 30, and also attach the overlay film 36 to the base film 30.
Cut only 6. While repeating the above operations, the base film 30 and overlay film 36 are moved onto the table surface of the alignment table 24 by the pinch roll 48. The base film 30 to which the overlay film 36 is temporarily attached on the positioning table 24 is attached to the dancer arm 64a of the sag/sag control section 64 and the detector 64b.
and is sent to the laminator 25.

At this time, when the base film 30 is pulled by the laminator 25 and the base film 30 becomes tense, the dancer
As the inclination angle of the arm 64a changes, the laminator 25
The rotational speed of the upper and lower pair of heating and pressing rolls 65a and 65b becomes slower. On the other hand, if the base film 30 is too slack, this is detected by the detector 64b, and the rotational speed of the pair of upper and lower heated press rolls 65a, 65b of the laminator 25 is increased to 4 speeds. Therefore, overlay film 36
The base film 30 to which it has been temporarily attached is always sent to the laminator 25 in a state of no tension. In the laminator 25, the overlay film 36 is completely laminated onto the base film 30 by a pair of upper and lower heated pressure rolls 65a and 65b. At this time, even if a difference in elongation occurs between the base film 30 and the overlay film 36 due to a difference in coefficient of thermal expansion, the overlay film 36 is cut at intervals, so that the difference in elongation is prevented from accumulating. be able to. After the overlay film 36 is laminated onto the base film 30 as described above, it is wound onto the winding drum 66 of the film winder 21.

According to the above embodiment, the base film 30 is sent to the alignment table 24 and the slack control section 4
0, the pinch roll 34 is controlled to position the overlay film 36 in a state of no tension on the positioning table 2.
4, the positioning holes 32, 32 of the base film 30 are connected to the positioning holes 37, 37 of the overlay film 36 using the pilot pin member 44 and the film holding member 45 on the positioning table 24. can be used to match accurately. In addition, after the overlay film 36 is temporarily attached to the base film 30 on the alignment table 24, it is sent to the laminator 25 in a state of no tension by the slack control unit 64, so that the overlay film 36 is completely attached to the base film 30 by the laminator 25. When pasting together, it can be done well without applying excessive force. Also, the pilot pin member 44
The positioning holes 32, 32 of the base film 30 are matched with the positioning holes 37, 37 of the overlay film 36 one by one using the and film holding member 45, and the overlay is removed every time a predetermined number of positions are matched. film 3
6 is cut with the cutter member 47, the base film 3
It is possible to prevent the accumulation of the pitch error of the alignment holes 32, 32 of the overlay film 36 and the pitch error of the alignment holes 37, 37 of the overlay film 36 from accumulating. Even if elongation occurs due to a difference in thermal expansion coefficient between the overlay film 36 and the base film 30 or a pitch error between wiring patterns occurs when the overlay film 36 and the base film 30 are completely laminated onto the film 30, this difference in elongation is prevented from accumulating. Therefore, after pasting the overlay film 36, the positioning holes 32 of the base film 30,
32 and overlay film 36 alignment hole 37
, 37 may shift and not match. As explained above, according to the present invention, the overlay film can be laminated onto the base film with high precision without misalignment, and work efficiency is significantly improved.
It has the advantage of reducing the burden on the worker and being easily handled even by unskilled workers.

[Brief explanation of drawings]

Figures 1 and 2 are schematic diagrams showing a conventional configuration, Figure 3 is a schematic diagram showing an embodiment of the present invention, Figure 4 A is a plan view of the alignment table, and the opening in the figure is a side view. , FIG. 5 is a plan view of the base film, and FIG. 6 is a plan view of the overlay film. 20... Base film sending machine (base film sending mechanism), {23... Overlay film sending machine, 34... Pinch roll, 40...
...Sag control unit} (overlay film sending mechanism), 24...Positioning table, 44...
... Pilot pin member, 45 ... Film holding member, 46 ... Cartridge heater, 4
7... cutter member, 48... pinch roll, 25... laminator.

Claims (1)

[Claims] 1. A base film feeding mechanism that feeds out a base film, an overlay film feeding mechanism that feeds out an overlay film to be bonded to a patterned surface of the base film in a tension state, and a base film sent from the base film feeding mechanism. Each time the overlay film sent from the overlay film sending mechanism is superimposed and the overlay film is correctly positioned for a predetermined number of patterns on the base film, the overlay film is temporarily attached to the base film, and only the overlay film is cut. 1. A continuous film laminating apparatus, comprising: a positioning table for positioning, and a laminator for completely laminating an overlay film temporarily attached onto a base film by the positioning table.