JPS624113A - Feed gear for flexible platelike work - Google Patents

Abstract

PURPOSE:To convey a flexible substrate after being subjected to double-side coating by a robot double-side roll coater without entailing any damage to it, by attaching a clamp, to be opened or closed by a lever, to an endless chain conveyer. CONSTITUTION:A substrate 15 is conveyed to a roll coater by roller conveyers 3 and 4 and transferred to upper and lower surface of the substrate 15 by photo- resists 8 and 11. Afterward, the substrate 15 is conveyed to a dryer 13 by an endless chain conveyer 12 fitted with a clamp. Each clamp body 16 is opened or closed by a tension spring 20 and symmetrically installed face-to-face at the specified interval on the endless chain conveyer 12, and such one situated at a C position at an A point is clamped and a cam follower 21 comes into contact with a close lever, whereby it comes to a D position and is closed, holding the substrate 15 in between. And, after passing the dryer 13, the cam follower 21 comes into contact with the close lever, opening the substrate 15 from the holding.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a flexible plate-like material coated with liquid paint such as etching resist on both sides at the same time.
Feeding device for flexible plate-like materials used to move drying ovens, etc.! Regarding.

(Prior art) For example, in the production of printed wiring boards, when forming an etching resist on a copper-clad laminate, or when forming an etching resist on an adhesive-coated laminate, etc. 2. Description of the Related Art It is widely practiced to coat the surface of a plate-like object with a paint using a roll coater. However, it is difficult to simultaneously coat the surface of a plate because the surface immediately after coating is liquid and the plate is slick-coated.

When the plate-like object is rigid, the methods shown in the first method, FIG. 2, FIG. 5, FIG. 4, and FIG. 5 are generally used as various methods of supporting the end portions. In particular, 1 is a plate and 2 is a feeding device.

(Problems to be Solved by the Invention) These are the problems that the plate-like object is 1. Limited to relatively thick and rigid cases of Q mra or more. Figures 2 to 4 are 1 to 511.
5 and 6 are often applied to plate-like objects with a thickness of about 1 Qmm or more.

Further, in the case where the plate-like object is flexible and does not pose a problem in terms of appearance, the method shown in FIG. 7 is used.

However, it is not used in cases where the coating on the surface of a plate-like object after coating, such as liquid photoresist for printed wiring boards, needs to be smooth and free of dents.

Therefore, coating both sides of a flexible plate with a liquid paint using a roll coater is not practiced.

The present invention is a double-sided roll coater that simultaneously coats liquid paint (for example, liquid photoresist) on both sides of a flexible plate-like object (for example, an inner layer substrate of a multilayer printed wiring board or a flexible printed wiring board) after coating. The present invention provides a feeding device tube that prevents the appearance and quality of the product from being damaged or degraded due to damage to the coated part or substrate due to dents or scratches due to mechanical contact between both sides of the VC.

(Means for Solving the Problems) Hereinafter, the present invention will be explained using a liquid photoresist coating process during circuit formation on an inner layer substrate of a multilayer printed wiring board as an example.

The inner layer board of a multilayer printed wiring board usually has a thickness of A18F.
1 from fl11. Q O111110 is used in various ways. In particular, when the thickness is less than α4 mm, the substrate becomes flexible and transportation is often difficult.

Currently, photoresists are often made of dry film, which is a photosensitive resin film, and are bonded under heat and pressure to a heated substrate.
There are many steps such as heating, alternating layers, cutting, cutting edges, and drilling guide holes, and it is expensive, has limited lubricity and degree of release, and is in liquid form.
A method of directly coating the inner layer substrate with photoresist is being considered. However, electrostatic coating, spray coating, and dip coating, which simultaneously coat both sides, have poor photoresist yields and result in a large amount of loss. It is rarely used because it requires large-scale equipment with poor productivity and requires a large amount of equipment investment. Therefore, when the yield of 7-otoresist is <1, a double-sided roll coater is often used because the weir plate is simple and the capital investment is relatively small, but if the substrate is flexible, it is difficult to transport it after coating, so it is not used. do not have. The present invention was made in order to solve the problem of transportation after coating, and relates to a system for supporting and transporting a substrate by clamping both ends of the substrate in the feeding direction after double-sided tube coating of the substrate using a roll coater.

This will be explained in detail below. The eighth factor is a simplified side view of a double-sided roll coater that simultaneously coats both sides of the circuit-forming photoresist t of the inner layer substrate of a multilayer printed wiring board employing the present invention. In Figure 8, 4
4 is a feed roller conveyor that feeds the substrate to the T-roll coater, and is positioned at 50 locations according to the size of the substrate so that the substrate can be fed to the fixed position of the roll coater. 6 is the upper coating roll, 7 is the upper doctor roll, 8
is photoresist 7, and the amount transferred onto the upper surface of the substrate is regulated by the clearance between 6 and 7. Reference numeral 9 is a lower coating roll, 10 is a lower doctor roll, and 11 is a photoresist, and the amount transferred to the lower surface of the substrate is regulated by the clearance between 9 and 10. 12 is a chain conveyor with a clamp and is the key point of the present invention. 15 is a dryer, and 14 is a delivery chainless belt conveyor for sending the dried substrate to a subsequent process. 6
The 7th photoresist is coated on both sides at the same time by the 9th coating coolant, and the 7th photoresist on the surface needs to be solidified before being transferred to the endless belt conveyor for the subsequent process. use.

However, during this time, the 7 otoresist on the surface of the substrate remains in a liquid state, and after 69 assimilation, there must be no dents or small scratches on the surface, so it is supported at both ends, for example, outside the effective dimensions of the final process.
, the thin case of 123 cities becomes 7 lexical, which is the conventional second
In the methods shown in Figures, Figure 5, and @ Figure 4, the center portion of the board bends downward and falls under its own weight. Therefore both ends are 51cm.
It is necessary to support the board at a part that does not interfere with the effective dimensions of the product within a range of 300 to 300 cm, and to send the board in a horizontal state. The present invention solves this need, and is attached to an endless chain conveyor with a ramp "i12" as shown in Fig. 1, and is supported from both ends. Fig. 1 is an assembly diagram of the clamp on the right side in the feeding direction. 14 is a chain of an endless chain conveyor, 15 is a substrate coated with 7 Otoresist on both sides, 16 is a clamp body, 17 is a collar, 18 is a spring pin, 19 is a clamp pin, and 20 is a tension spring. Opens and closes the shift lamp. 21 is a cam follower, 22 is a pin that fixes the top of the clamp body, 23 is a bolt nut that fixes the clamp assembly assembly to the endless chain conveyor 14, and 24 is a cam that contacts the guide 25 that keeps the clamp body horizontal. It is 7 inch lower.

The clamps shown in Fig. 8 are attached to the endless chain conveyor 12 at intervals of 5 to 20 CfM, and after the substrate passes between 6 and 9, it is sandwiched at both ends, leveled, and the photoresist 7 on both sides is dried and solidified using the dryer 13. After that, just before passing to the endless belt conveyor 14, the clamp opens and the board is released from the endless chain conveyor 12.
It is transferred to endless belt conveyor 4. Note 1
A lever is used to open and close the clamp fixed to the second endless chain conveyor. The lever close to the coater is the one shown in Figure 9 rζ.

FIG. 9 shows the clamp closing lever on the right side when facing the board feeding direction. At the point OA in FIG. 8, the clamp body in FIG. 1 is in the C position tVC, but the cam follower of the clamp closing lever 1c21 of 26 comes into contact with it, and the clamp body is in the D position and closed. The mechanism is such that one board and 15 tubes are sandwiched between these. In addition, the clamp closing lever 26 is fixed to the frame 29 of the endless chain conveyor 12 with #lL of 27.
, 28, +b).

FIG. 10 shows the clamp opening lever. The main body of the clamp opening lever 50 is fixed to the frame 29 by the bolt 52, and when it moves along the Zen lever 51, it contacts the cam roller of the clamp 21 and opens, and the clamp main body 16 opens, opening the board 15. It is opened and transferred to 16 endless belt conveyors.

Note that it is good to change the size and pitch of the shift lamps depending on the size of the board. Further, the feeding direction can be easily adjusted by operating the 29-frame gold handle of the 12 endless chain conveyors, and can be applied to any size of substrate. In addition, FIG. 11 shows the entire state in which a plate-like object is being fed due to the misfire 1311. ili
Show your teeth.

(Effects of the Invention) As described above, by attaching the clamp to the endless chain conveyor, which can be opened and closed by levers, it is possible to convey the flexible base coat without damaging the surface after double-sided coating using the double-sided roll coater. This allows photoresist to be coated on both sides at the same time.

[Brief explanation of the drawing]

Fig. 1 shows a white side view of the main part of the device of the present invention, Figs. 2 to 7 show a cross section of a conventional device, Fig. 8 shows a side view of the entire device of the present invention, and Figs. 9 and 10. 11 is a perspective view of the tatami part of the device of the present invention, and FIG. 11 is a sectional view of the main part of the device of the present invention. Explanation of symbols 14 Endless chain conveyor 15 Double-sided photoresist coated substrate 16 Clamp flood 3 Figure House 6 Figure Tail 8 Figure 11

Claims (1)

[Claims] 1. Consists of a pair of endless conveyors, a ramp attached to the endless conveyor that can be opened and closed, a mechanism for closing clamps provided at necessary locations on the endless conveyor, and a mechanism for opening clamps provided at other required locations on the endless conveyor. Feeding device for flexible plate materials.