JPS6231341B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for peeling off Mylar (protective film) from a photosensitive dry film stuck to a processing target board such as a printed wiring board.

For example, in the manufacture of printed wiring boards, a photosensitive dry film is attached to a copper-clad laminate serving as a printed wiring board, the film is exposed and developed to form a desired film pattern, and then the film pattern is used as a mask. The process involves etching the copper foil to form the desired circuit pattern. Mylar (protective film) such as a polyester film is coated on the photosensitive dry film used in the circuit pattern forming process until just before development. The purpose of applying such mylar is
First, prevention of scratches on the surface of photosensitive dry film;
The second purpose is to prevent staining, the second purpose is to prevent the complication of assembling a dry plate and a mask due to the adhesiveness of the photosensitive dry film, and the third purpose is to prevent partial photopolymerization due to the presence of oxygen in the photosensitive dry film.

By the way, conventionally, peeling Mylar from photosensitive dry film after exposure has been done manually one by one, which not only hinders the automation of printed wiring board manufacturing, but also reduces the workability of the Mylar peeling process. There was a drawback that this reduction led to poor production efficiency.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and aims to provide a Mylar peeling device for photosensitive dry film that can continuously perform Mylar peeling of photosensitive dry film in the film exposure and development line. It is something.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, reference numerals 1, . . . 1 are feed rollers that sequentially transport a printed wiring board 2 (hereinafter simply referred to as a board), which is a board to be processed and has a photosensitive dry film adhered to both sides thereof, in the direction of the arrow. A pair of Mylar peeling rollers 4 whose circumferential surfaces are covered with double-sided adhesive tape 3 and which can be separated from each other are placed above and below predetermined locations of these feed rollers 1...1.
a and 4b are arranged so as to face each other at substantially the same distance as the thickness of the substrate 2. The upper roller 4a among these rollers is connected to a shaft 5 connected to a motor (not shown).
a in the counterclockwise direction, and the lower roller 4b is rotated in the clockwise direction by a shaft 5b connected to a motor (not shown). Further, each of the mylar peeling rollers 4a, 4b has a plurality of annular grooves 6a...6a, 6b...6b formed at predetermined intervals in the length direction, and these rollers 4a,
Comb-shaped mylar separation guide bodies 7a, 7b are inserted into the annular grooves 6a...6a, 6b...6b of the grooves 4b, respectively. In addition, each guide body 7a, 7b is provided with a pair of pinch rollers 8a, 8a, which sends the Mylar separated from the Mylar peeling rollers 4a, 4b, respectively.
8b, 8b are provided.

In addition, 9 in the figure is the mylar peeling roller 4.
This is a roller drive mechanism that operates the rollers 4a and 4b to separate from each other while the substrate 2 passes through the rollers 4a and 4b while being in contact with each other. This roller drive mechanism 9 has one end connected to a support member 11 via pins 10, 10.
The other end is pivotally connected to the mylar peeling roller 4.
A pair of rotating arms 12a, 12b pivotally supported on shafts 5a, 5b of a, 4b, and these rotating arms 12
A pair of links 15a, 15b, one end of which is pivotally connected to the intermediate portion of a, 12b via pins 13, 13, and the other end of which is mutually pivotally connected via a pin 14, and these links 15a, 15b intersect. Air cylinder 17 with piston rod 16 connected to pin 14
and a photoelectric sensor 18 located behind the mylar peeling rollers 4a and 4b, which detects the moving state of the substrate 2 and operates the cylinder 17 after a certain period of time after the detection.

According to such a configuration, after the Mylar peeling rollers 4a and 4b are rotated in the directions of the arrows, the substrate 2 having the Mylar-coated photosensitive dry film on both sides, which has been exposed to light by the feed rollers 1... When the substrate 2 is conveyed in the direction of arrow A, the substrate 2 moves between the Mylar peeling rollers 4a and 4b and comes into contact with the double-sided adhesive tape 3 on the outer periphery of the rollers 4a and 4b, so that the Mylar of the photosensitive dry film on the substrate 2 is peeled off on both sides. Due to the adhesive strength of the adhesive tape 3, it adheres to each peeling roller 4a, 4b side and is peeled off. In this peeling process, the roller 4 of the substrate 2
The air cylinder 17 is sent from the photoelectric sensor 18 of the roller drive mechanism 9 that detects the positional state with respect to a and 4b.
A signal is sent to Then, the piston rod 16 of the cylinder 17 is connected to the pair of links 15a, 15.
move in the direction of arrow B so as to push the pin 14 at the intersection of arrow B, and operate to open the links 15a, 15b, and the pair of rotating arms 12a, 1 connected thereto.
2b similarly opens using the support member 11 as a fulcrum, and along with this, the arms 12a, 12b
Mylar peeling rollers 4a and 4b connected to the other end via shafts 5a and 5b operate to separate from each other. As a result, the peeling roller 4 is constantly attached to the substrate 2.
The rollers 4a and 4b do not touch the through holes of the substrate 2 and damage the photosensitive dry film.
The Mylar of the upper photosensitive dry film is smoothly adhered to the peeling rollers 4a and 4b and peeled off.

Further, if annular grooves 6a...6a, 6b...6b are formed in the peeling rollers 4a, 4b, respectively, and comb-shaped mylar separation guide bodies 7a, 7b are inserted into the annular grooves 6a...6a, 6b...6b,
Mylar adhering to the circumferential surface of the peeling rollers 4a, 4b is separated along the guide bodies 7a, 7b, and can be disposed of via the pinch rollers 8a, 8a, 8b, 8b, and the mylar is wrapped around the entire circumferential surface of the peeling rollers 4a, 4b. , the Mylar can be continuously removed without causing the inconvenience of not being able to remove the Mylar from the next substrate.

Therefore, according to the Mylar peeling apparatus according to the present invention, for example, the Mylar of the photosensitive dry film on the substrate after exposure can be peeled off continuously and smoothly,
Since the board after Mylar removal can be transferred to the development process, it is possible to automate the production of printed wiring boards and significantly improve work efficiency.

Note that the Mylar peeling device according to the present invention is not limited to applying adhesiveness to the circumferential surfaces of both of a pair of Mylar peeling rollers as in the above embodiment; You can also let it hold. The application of tackiness to the peripheral surface of the peeling roller is not limited to the use of double-sided adhesive tape as in the above embodiments, but may also be done by applying an adhesive.

It goes without saying that the roller drive mechanism of the mylar peeling device according to the present invention is not limited to the form of the above-described embodiment, but can be arbitrarily changed in design within a range that meets the purpose.

As detailed above, according to the present invention, it is possible to automatically and continuously peel off Mylar, which serves to protect a photosensitive dry film, and it is possible to do so consistently on the film exposure and development processing line. Accordingly, it is possible to provide a Mylar peeling apparatus that can perform Mylar peeling on a film, and can automate exposure and development and significantly improve work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a front view of a Mylar peeling apparatus for photosensitive dry film showing an embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1. DESCRIPTION OF SYMBOLS 1...Feed roller, 2...Substrate, 3...Double-sided adhesive tape, 4a, 4b...Mylar peeling roller, 6a,
6b... Annular groove portion, 7a, 7b... Mylar separation guide body, 9... Roller drive mechanism, 11... Support member, 1
2a, 12b... Rotating arm, 15a, 15b... Link, 17... Air cylinder, 18... Photoelectric sensor.

Claims (1)

[Claims] 1. A plurality of feed rollers for sequentially moving a plate to be processed to which a photosensitive dry film is adhered, and a plurality of feed rollers disposed above and below arbitrary positions of these feed rollers facing each other at approximately the same distance as the thickness of the plate to be processed. a pair of Mylar peeling rollers that can be brought into and out of contact with each other and have adhesive on at least one peripheral surface; and a pair of Mylar peeling rollers that can be moved into and out of contact with each other and have adhesive surfaces; and a pair of Mylar peeling rollers that are capable of separating from each other while the plate to be processed passes through the sheet while being in contact with the Mylar peeling rollers. 1. A Mylar peeling device for photosensitive dry film, comprising a roller drive mechanism for operating the Mylar.