JPS61199950A - Laminator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for laminating a photosensitive dry film onto a printed wiring board.

More specifically, the present invention relates to an apparatus that cuts a photosensitive dry film into a predetermined length and automatically laminates it onto a copper-clad laminate.

[Conventional technology]

In recent years, auto-cut laminators have been proposed for the purpose of reducing the amount of photosensitive dry film used, examples of which include JP-A-52-14876 and JP-A-56-49.
No. 592, etc. may be mentioned.

The method described in JP-A No. 52-14876 described above is a method in which a film cut to a predetermined length is laminated onto a copper-clad laminate while being held by a vacuum suction plate. In this method, the vacuum suction plate is a wide flat plate, and when the photosensitive dry film is suctioned and the left and right edges are temporarily crimped and cut by a link mechanism via left and right air cylinders, the left and right sides are parallel to each other. , as well as wrinkles, sagging, and air entrapment between the copper-clad laminate and the photosensitive dry film due to not operating at a constant speed. Various problems related to adhesion may often occur, and laminate boards with wrinkles, sagging, and air entrapment that have poor adhesion are processed through the normal printed wiring board manufacturing process. When manufactured, it may cause defects such as disconnection, chipping, pinholes, or short circuits.

Furthermore, in the method described in JP-A-56-49592, a photosensitive dry film cut into a predetermined length is fed to a laminating roll by sliding on a film guide plate by a feed roll. When the photosensitive dry film slides on this film guide plate, because the film is thin, it cannot withstand the frictional resistance and just stiffens in the middle, wrinkles occur, and the film is not fed parallel to the left and right, so it is difficult to laminate. The product may wrinkle, sag, entrap air, and not be laminated in the correct position, and in some cases may not be laminated at all.

Furthermore, the sliding of the photosensitive dry film on the film guide plate causes the adhesion of foreign matter and dust, which is the most serious problem in printed wiring board manufacturing, and there is a risk that a product that cannot be put to practical use may be obtained.

[Problem that the invention seeks to solve]

The present invention solves the above-mentioned problems and aims to provide a laminator that is free from wrinkles, sagging, air entrapment, and adhesion of foreign matter and dust.

[Means for solving problems]

In order to achieve the above object, the present invention provides a detection device for detecting the length of the copper-clad laminate on a transfer path in which the copper-clad laminate is transported by a drive roll for feeding the copper-clad laminate. a pre-pressing head for pre-pressing the photosensitive dry film supplied by the photosensitive dry film supply drive roll onto the copper-clad laminate; and a length of the copper-clad laminate detected by the detection device. a cutter for cutting the photosensitive dry film into a predetermined length corresponding to the above, an upper vacuum suction head located close to the bottom of the drive roll for supplying the photosensitive dry film, and a lower vacuum suction head located close to the top of the laminating roll. This is a vertical laminator equipped with a suction head.

[For production]

The pretreated copper-bonded laminate is transported vertically by a copper-bonded laminate feeding drive roll, and the copper-bonded laminate is stopped at a predetermined position where the photosensitive dry film is pre-pressed. , drive the photosensitive dry film supply drive roll to feed out the photosensitive dry film, stop it at a predetermined position in order to pre-press the tip of the photosensitive dry film to the tip of the stopped copper-clad laminate; The upper vacuum suction head installed close to the bottom of the drive roll for supplying the photosensitive dry film starts suction to suck the photosensitive dry film, and the pre-pressing head is operated on both sides of the copper-clad laminate; The tip of the photosensitive dry film is preliminarily pressed onto the tip of the laminate at a predetermined position.

When the preliminary crimping is completed, the preliminary crimping head immediately retracts and drives the drive roll for feeding the copper-clad laminate, the drive roll for supplying the photosensitive dry film, and the laminating roll, and at the same time drives the upper and lower vacuum suction heads. The photosensitive dry film is sucked with a vacuum pressure lower than that used when cutting the photosensitive dry film, and the film is slid and guided to the laminating roll.

On the other hand, a detection device that detects the length of the copper-clad laminate is installed on the transport route through which the copper-clad laminate is transported, so the length of the copper-clad laminate detected by this detection device is Once the photosensitive dry film has been laminated to a predetermined length depending on the size, the cutter is operated crosswise to cut the photosensitive dry film, and after cutting, the lamination is performed while being held by weak vacuum suction with the lower vacuum suction head. be done.

〔Example〕

The present invention will be explained based on the embodiments shown in the drawings.1.
1. . . . are copper-clad laminates that are continuously fed through pre-processes such as surface treatment and preheating, and 2.2 are the copper-clad laminates 1, 1. . For preliminary pressure bonding, the photosensitive dry films X and X are stopped at a predetermined position until they are set in a predetermined position. This stopping can also be done by stopping the copper-clad laminate feeding drive rolls 2, 2 using a stop position sensor (not shown) or the like, and stopping the copper-clad laminate by sandwiching the copper-clad laminate between the rolls 2.2. Moreover, it is also possible to stop it by grasping it with a side restraining member or the like.

3.3 is a roll wrapped with photosensitive dry film X and X! 4.4 is a roll for winding up the peeled cover film; 5 and 5 are drive rolls for supplying photosensitive dry film; rolls 3 and 3 around which these photosensitive dry films are wound; and cover film winding roll 4. , 4 and a drive roll 5 for supplying photosensitive dry film.
5 have the same shape on both sides of the transfer path of the copper-clad laminate 1, respectively.
A pair will be established at the same university.

6.6 is the drive roll 5 for supplying the photosensitive dry film.
A pair of upper vacuum suction heads are provided below the copper-clad laminate 10 and facing each other, and are located below the suction heads 6.6, that is, on the side in the direction of conveyance of the copper-clad laminate 1. A pair of cutters 7.7 are provided, and a pair of preliminary crimping heads 8 are provided below the pair of cutters 7.7.
, 8 are arranged. Reference numerals 9 and 9 denote a pair of lower suction heads that are provided facing each other in the same manner as the upper vacuum suction head 6.6, and p, io, and io denote the lower suction heads 9,
This is a pair of laminating rolls that are provided close to the transport direction side of the copper-clad laminate 1 of No. 9. Reference numeral 11 denotes a length detecting device for the copper-clad laminate 1, which is disposed on the transport path of the copper-clad laminate 1.

The embodiment of the present invention is constructed as described above, and includes:
Regarding its operation, it is surface treatment.

The copper-clad laminate 1 that has undergone preliminary steps such as preheating is held between the feeding drive rolls 2 and 2 and transported in the vertical direction, and a photosensitive dry film is preliminarily bonded to the tip of the copper-clad laminate 1. When reaching the predetermined position of the reservoir, the feeding drive roll 2,
The transfer of the copper-clad laminate 1 is stopped by, for example, stopping the rotation of the photosensitive dry films X and X for preliminary pressure bonding.

Wait until it is set in place.

On the other hand, if the photosensitive dry films in the form of long rolls provided on both sides of the transport path of the copper-clad laminate 1 have a cover film, the cover film is peeled off.
The peeled off cover film is rolled up by cover film winding rolls 4, 4, and the photosensitive dry films X, X from which the cover film has been peeled off are fed to a pair of photosensitive dry film supply drives from both sides of the copper-clad laminate 1. roll 5
When the tips of the photosensitive dry films X, X reach a predetermined position relative to the stopped and waiting copper-clad laminate 1, the supply drive rolls 5, 5 is stopped, the photosensitive dry films x, The tips of the dry films X and X are preliminarily pressed to predetermined positions on both sides of the copper-clad laminate 1. After the preliminary pressure bonding, the preliminary pressure bonding heads 8, 8 immediately return to their original positions, and drive the drive rolls 2, 2 for feeding the copper-bonded laminate, the drive rolls 5.5 for supplying the photosensitive dry film, and the laminating roll 10.10. , photosensitive dry film X on both sides of the tip.

Transfer the copper-clad laminate 1 with the tip of the X pre-crimped,
Lead to laminating roll 10.10. At this time, the photosensitive dry film ,
At the same time as the above-mentioned driving, X lowers the degree of decompression using the upper and lower vacuum suction heads 6.6 and 9.9 having small holes, and adsorbs the photosensitive dry films X and X while the dry films are being sucked. Since X and X are transported in a sliding manner, the photosensitive dry films X and X are guided to the laminating roll 10 and 10 while removing wrinkles and slack from them.

Since the photosensitive dry films X and X are supplied from long rolls, it is necessary to cut them into a predetermined length. The determination is made by detecting the length of the copper-clad laminate 1 by the length detection sensor 11 of the copper-clad laminate 1 disposed on the transfer route of the copper-clad laminate 1, and by this detection, the length of the copper-clad laminate 1 is determined. When the photosensitive dry film has been laminated to a predetermined length, the upper and lower vacuum suction heads 6.6°9.9
The cutter 7.7 is operated transversely from both sides of the copper-clad laminate 1 to cut the photosensitive dry films X, X by making the degree of vacuum stronger than in normal lamination. The reason for increasing the degree of decompression of the upper and lower vacuum suction heads for the above-mentioned cutting time is to prevent poor cutting and to prevent wrinkles and sagging of the photosensitive dry films X and X. It's for a reason.

After the cutting is completed, the photosensitive dry film

However, since the lower vacuum suction heads 9 and 9 are located close to the laminating roll 10 and 10, the cut rear ends of the photosensitive dry films X and X to be laminated are transferred to the laminating roll 10. Since suction is carried out by the lower vacuum suction heads 9, 9 until just before lamination by the 10°, it is possible to completely eliminate air entrapment.

On the other hand, at the same time as the cut remaining photosensitive dry film X, The upper vacuum suction head 6.6 weakly suctions and holds it, and when the next copper-clad laminate 1 is transferred, the vacuum suction of the upper vacuum suction head 6.6 is stopped and at the same time the photosensitive dry film feeding drive is activated. The rolls are driven and lamination is repeated again as described above.

As described above, in this embodiment, the upper and lower vacuum suction heads 6.6, 9.9 are fixed and small, and the photosensitive dry film X is used.

Since X can be transferred in a sliding manner while suctioning, a laminate product without wrinkles or sagging can be obtained.Also, since the laminator of this example is vertical, it does not take up much space, and it When the copper-clad laminate is transferred to the feed drive roll 2.2 and the laminating roll 10.degree. 10, the copper-clad laminate is transferred vertically, so that it can be easily centered with respect to the rolls.

〔Effect of the invention〕

The laminator according to the present invention transports the copper-clad laminate by a drive roll for transporting the copper-clad laminate, and a detection device for detecting the length of the copper-clad laminate is disposed on the transport path, On the other hand, the photosensitive dry film is fed out by a drive roll for supplying the photosensitive dry film, and the stop of the copper-clad laminate and the photosensitive dry film for pre-pressing or the start of transport after the pre-pressing is This can be easily carried out by stopping and driving those drive rolls.Furthermore, the laminator of the present invention is vertical, so it does not take up much space, and the copper-clad laminate is transported in the vertical direction. The centering of the feeding drive roller and the laminating roll can be easily performed.

In addition, upper and lower vacuum suction heads are provided below the photosensitive dry film supply drive roll and above the laminating roll, and the upper and lower vacuum suction heads are small and fixed. Since the photosensitive dry film is sucked by the upper and lower vacuum suction heads and transferred while sliding on the surface of the heads, a laminated product without wrinkles, sagging, or air entrapment can be obtained. This significantly improves the reliability of the adhesion between the copper-clad laminate and the photosensitive dry film, which is the most important step in the manufacturing process.

In addition, the force-sensitive dry film does not slide on wide and long guide plates, etc. unlike conventional equipment, so it can prevent the adhesion of foreign matter and dust, which is the most important thing to eliminate in the printed wiring board manufacturing process, and significantly reduce the defective rate. It also has the effect of leading to a reduction in energy consumption.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a side view for explaining the laminator, Fig. 2 shows a laminated copper-clad laminate, (a) is a plan view, and ←) is a side view for explaining the laminator. A side view is shown. X, X: Photosensitive dry film 1.1: Copper-clad laminate 2.2: Drive roll for feeding copper-clad laminate 5.5: Drive roll for supplying photosensitive dry film 6.6: Upper vacuum suction head 7 , T: Cutter 8, 8: Preliminary crimping head 9.9
: Lower vacuum suction head io, io: Laminating roll 11: Length detection device Patent applicant Asahi Kasei Corporation Figure 1

Claims (1)

[Claims] A detection device for detecting the length of the copper-bonded laminate is disposed on a transfer path in which the copper-bonded laminate is transported by a drive roll for feeding the copper-bonded laminate, and the copper-bonded laminate is fed by a drive roll for supplying a photosensitive dry film. a pre-pressing head for pre-pressing the photosensitive dry film to be applied to the copper-clad laminate; a cutter for cutting the dry film; an upper vacuum suction head adjacent to the lower side of the drive roll for supplying the photosensitive dry film;
A laminator characterized in that it is of a vertical type and has a lower vacuum suction head disposed close above the lamination roll.