JPH04344237A - Automatic cutting laminator - Google Patents

Abstract

PURPOSE:To feed films continuously and simplify the construction of a laminator in laminating photosensitive resin films, which form resists. on a copper-clad laminating base sheet for forming a circuit pattern, CONSTITUTION:Photosensitive resin films to be fed are guided to both faces of a base sheet while being sucked onto rolling surfaces of vacuum sucking rotary rolls. At the same time, a laminator presses the films, which have been cut by cutting means in length required for laminating, against the faces of the base sheet. In this laminator, the cut films 2a, 2b are sucked to, and transferred by, the vacuum sucking rotary rolls 6a, 6b on which sucking surface parts 17 are formed in the range only from portions where the photosensitive resin films 2a, 2b to be fed are brought into contact with the roller surfaces 15A to portions where they are brought into contact with the faces of the base sheet 21, i.e., in the required range necessary for substantially sucking the films 2a, 2b. Also, the cutting means are constituted of hot wire cutters 5a, 5b.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to an automatic cutting laminator for laminating a photosensitive resin film (hereinafter referred to as a dry film) serving as a resist onto a copper-clad laminate board (hereinafter referred to as a substrate) for forming a circuit pattern. .

0002

BACKGROUND OF THE INVENTION At present, as a method for applying resist to copper-clad laminated substrates, the lamination method using dry film is the mainstream method for reasons of simplicity, cleanliness, and productivity. In this lamination method, when attaching the dry film to the substrate, the greatest care is taken to prevent air bubbles from getting caught between the substrate and the film and to prevent wrinkles from occurring.

Conventional laminators with such measures are known, for example, those described in Japanese Patent Publication No. 59-46116 and Japanese Patent Application Laid-open No. 62-27148. In the one of Special Publication No. 59-46116,
The film is adsorbed to a kind of gate (vacuum bail),
This gate is moved to the substrate surface, and after releasing the vacuum at the gate, the film is attached to the substrate surface.

[0004] Furthermore, in Japanese Patent Application Laid-Open No. 62-27148, a vacuum drum (preliminary pressure roll) is provided with a vacuum suction surface over its entire circumference, and a vacuum drum (preliminary pressure roll) is provided close to the substrate for vacuum suction. The film is attached to the substrate surface while being attracted and held by the vacuum drum and the support holder.

[0005] For example, there is known a method for performing so-called frame lamination, in which a film is pasted leaving the edges of the substrate surface, as described in Japanese Patent Application Laid-open No. 56-49592.

[0006]

[Problems to be Solved by the Invention] By the way, in a laminator that uses a gate that can be vacuum-suctioned, the film is fed by suctioning the film to the gate, moving the gate, releasing the suction, and returning the gate to its original position. The disadvantage is that the operation is intermittent. Further, in the case of using a vacuum drum, since the entire circumference of the drum is a suction surface, it is necessary to provide a support holder capable of vacuum suction between the vacuum drum and the main pressure roll, which complicates the structure. Furthermore, in this laminator, the film is cut by a rotary blade on a roll, resulting in a complicated cutting mechanism.

The present invention has been proposed in order to solve the problems of the conventional technology, and provides an automatic cutting laminator that allows continuous film feeding and simplifies the configuration of the device. The purpose is to provide

[0008]

[Means for Solving the Problems] In order to achieve this object, the present invention has a method of guiding a photosensitive resin film fed in to a substrate surface while adhering it to the roll surface of a rotary roll for vacuum suction, and cutting it into the required size by cutting means. In a laminator that pressure-bonds a photosensitive resin film cut to the attachment length onto a substrate surface, the area where the photosensitive resin film being fed is in contact with the roller surface to the area where it contacts the substrate surface, that is, the film is substantially The photosensitive resin film is adsorbed by a rotating roll for vacuum suction, in which an adsorption surface portion is formed only in the required range for adsorption and transfer, and the photosensitive resin film is guided to the substrate surface and pressure-bonded. .

Further, in the present invention, the cutting means is constituted by a hot wire cutting device that cuts the photosensitive resin film with a hot wire stretched in the width direction of the film.

0010

[Operation] According to the structure corresponding to claim 1 described above, since the suction surface portion is formed only in the required range of the rotary roll for vacuum suction, the film is not suctioned in unnecessary areas and Operations such as canceling suction are not required. Therefore, the film can be laminated onto the substrate while being continuously transferred by suction.

Further, according to the structure corresponding to claim 2, since the cutting means is constituted by a hot wire cutting device, the film can be cut instantly. Therefore, as in the case where a rotary blade is provided on a rotary roll for vacuum suction,
When cutting the film, there is no need to temporarily stop the rotation of the rotating roll to cut the film, and the film can be cut while being continuously transported by the vacuum suction rotating roll.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the automatic cutting laminator according to the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an embodiment of this laminator.

In this figure, a photosensitive resin film (dry film) 2a wound around the upper roll 1a is pulled out from the roll 1a by feed rolls 3a and 4a, passed through a hot wire cutting device (heat cutter) 5a, and then cut into the upper roll 1a. It is sent out to a laminating roll 6a. Further, the dry film 2b drawn out from the lower roll 1b by the feed rolls 3b and 4b is sent out to the lower lamination roll 6b via a hot wire cutting device 5b. At this time, the protective films 7a and 7b stuck to the film surface are peeled off by peeling rolls 8a and 8b, and wound up by protective film winding rolls 9a and 9b, respectively.

The hot wire cutting devices 5a and 5b cut the film 2a.
, 2b, which extend the hot wires 10a, 10b across the width of the films 2a, 2b, are driven by cylinders 12a, 12b to move in the direction of the film surface during the cutting operation of the films 2a, 2b. , at this time hot wire 1
0a and 10b contact the film surface, and the films 2a and 2
b is instantly cut across the width direction.

As shown in FIG. 2, the laminate rolls 6a and 6b constituting the vacuum suction rotary rolls include rotary drums 15 rotatably provided at a spaced interval on the outer periphery of a fixed shaft 13 via bearings 14. There is. A large number of suction ports 14 penetrating toward the fixed shaft 13 are provided in the rotating drum 15 over the entire circumference across the width of the films 2a and 2b. A suction path 16 connected to an external vacuum source is formed in the center of the fixed shaft 13 in the axial direction. As shown in FIG. 3, the outer peripheral portion of the fixed shaft 13 is in airtight sliding contact with the inner peripheral surface of the rotating drum 15, and has a rotating drum surface 15A.
Two partition walls 1 that determine the range of the suction surface portion 17 formed in
8 and 18 are provided protrudingly. These partition walls 18, 18 are
It protrudes at an angle of, for example, 90 degrees with respect to the center of the shaft, and a vacuum chamber 19 is formed between the partition walls 18, 18, the rotating drum 15, and the fixed shaft 13. This vacuum chamber 19 and the suction path 16 on the shaft 13 side are connected through a plurality of communication holes 20 . As a result, a suction surface portion 17 is formed on the rotating drum surface 15A at a position and range determined by the fixed shaft 13, and the films 2a and 2b that have come off the suction surface portion 17 are automatically released from suction and are removed from the drum surface 15A. Peeled off.

The suction surface portion 17 is designed to cover a range from a portion where the dry films 2a and 2b that are fed in contact with the drum surface 15A to a portion where they contact the surface of the substrate 21, that is, to substantially suction and transfer the films 2a and 2b. These suction surface portions 17,
17, the films 2a and 2b are attracted and transferred.

A substrate 21 is fed between the upper and lower lamination rolls 6a and 6b by a feed roll 22, and the substrate 21 that has passed between the lamination rolls 6a and 6b is transferred to the roll 2.
It passes between 3a and 23b and is sent out.

Next, the operation of the automatic cutting laminator constructed as described above will be explained. First, when the front end of the substrate 21 is detected by a substrate detection sensor (not shown), the films 2a and 2b are transferred to the rotating laminating roll 6.
a, 6b, and the leading edges of the films 2a, 2b are attracted to the attraction surfaces 17, 17 of the laminating rolls 6a, 6b. The films 2a and 2b are carried to the front and back surfaces of the substrate 21 by the rotating laminating rolls 6a and 6b, respectively, while remaining in an adsorbed state, and are then moved to the upper and lower laminating rolls 6a, 6b.
6b, the leading edge of the film is thermocompression bonded to a position slightly set back from the leading end of the substrate 21. The leading edge of the film is the substrate 21
After being fixed to the front and back sides of the film, the film moves out of the range of the suction surfaces 17, 17 of the rotating drum surface 15A, and the suction of the leading edge of the film is automatically released. After that, the films 2a, 2b are separated by the rotating upper and lower laminating rolls 6a, 6b.
is continuously fed to the substrate surface while being attracted, and the substrate 2
The front and back sides of 1 are laminated.

When the rear end of the substrate 21 is detected by the substrate detection sensor, the upper and lower films 2a, 2b are cut by hot wire cutting devices 5a, 5b at appropriate positions where frame lamination can be performed.
are respectively disconnected by. When the films 2a and 2b are completely attached to the front and back surfaces of the substrate 21, a laminate substrate 24 is produced in which the dry films 2a and 2b are pressed into a picture frame shape as shown in FIG. Note that the diameters of the upper and lower laminating rolls 6a and 6b may be the same.

[0020]

[Effects of the Invention] As explained above, according to the present invention, since a vacuum suction roll is used in which the suction surface portion is formed only in the required area for suction and transfer of the film, the film can be fed continuously. At the same time, the conventionally used suctionable support holder is no longer necessary, and the configuration of the device is simplified.

Furthermore, since the hot wire cutting method is adopted, it is possible to perform a cutting operation more quickly than the conventional cutting method using a rotary blade, and the cutting mechanism is greatly simplified.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of an automatic cutting laminator according to the present invention.

FIG. 2 is a sectional view of a laminate roll used in the laminator of FIG. 1.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a plan view of a substrate laminated with a dry film.

[Explanation of symbols]

1a, 1b Rolls 2a, 2b Photosensitive resin films 3a, 3b, 4a, 4b Feeding rolls 5a, 5b
Hot wire cutting devices 6a, 6b Laminating rolls 7a, 7b Protective films 8a, 8b Peeling rolls 9a, 9b Protective film winding rolls 10a, 10
b Hot wires 11a, 11b Cutting portions 12a, 12b Cylinder 13 Fixed shaft 15 Rotating drum 15A Drum surface 16 Suction path 17 Adsorption surface portion 18 Partition wall 19 Vacuum chamber 20 Communication hole 21 Substrate 22 Feed rolls 23a, 23b Roll 24 Laminated substrate

Claims (2)

[Claims] Claim 1: The photosensitive resin film being sent in is guided to the substrate surface while being adsorbed to the roll surface of a rotating roll for vacuum suction, and the photosensitive resin film cut to the required attachment length by a cutting means is placed on the substrate surface. In the laminator that presses the photosensitive resin film, the photosensitive resin film is adsorbed by a rotating roll for vacuum suction, which has an adsorption surface area only in the necessary area to absorb and transfer the film, and then the photosensitive resin film is attached to the substrate surface. An automatic cutting laminator that is characterized by guiding and crimping. 2. Claim 1, wherein the cutting means is constituted by a hot wire cutting device that cuts the photosensitive resin film with a hot wire stretched in the width direction of the film.
Automatic cutting laminator as described.