JPS62252210A - Method and device for producing continuously printed circuit board - Google Patents

Abstract

PURPOSE:To reduce the installation area of the whole of a device, by constituting a device of a string of consecutive baths arranged in series, suspending a board material to be processed at a hanger rack, and performing the process of the bath one by one in order from one side. CONSTITUTION:A guide rail 2 is provided horizontally at the upper side of a consecutive bath 1, and a hanger rack 3 is moved intermittently in a constant cycle along the guide rail 2. The hanger rack 3 repeats a sequence that it lowers and processes a board material 4 hung at the rack in the bath at every movement, and after that, raises the material, and moves to the next bath. In other words, the device is constituted so that a self-advancing mechanism, and an elevation mechanism are provided in the device, and the board material is moved and raised and elevated cyclically by every unit bath by an appropriate driving control mechanism, for example, the program control of a microcomputer, thereby, a large number of printed circuit boards can be manufactured continuously. The remarkable narrow width of the bath in the arranging direction of each bath is permitted, therefore, the whole length of a string of consecutive baths can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for continuously manufacturing printed wiring boards, particularly copper through-hole printed wiring boards.

[Conventional technology]

Copper through-hole printed wiring boards are made by applying copper foil and primary steel plating to the board material, plating the required areas with tin, solder, nickel, etc. to provide a so-called resist, and then! After etching in a corrosive solution, these resist metals are peeled off to finish the steel through-holes.The steel through-holes ensure that the quality of the printed circuit is stable and that it can be precisely turned. It is said to be suitable for obtaining

Conventionally, after etching, the resist metal is peeled off to obtain copper through holes. In order to continuously manufacture printed wiring boards using the above-mentioned conventional method, for example, a board material with -2 steel plating is used. , suspended from a rack that moves at a constant speed f above the plating tank and arranged in tandem! Pass through the plating tank,
After performing secondary steel plating and metal resist plating, the substrate material is removed from the rack and moved while being held horizontally, followed by a copper etching process. This etching process involves spraying a corrosive liquid from above and below11.
After washing with water and drying, the plated portion is peeled off. Intermediate devices such as a feeding machine, a receiving machine, and a connecting conveyor are used to operate these machines.

[Problem that the invention seeks to solve]

However, in the conventional method as described above, a device for performing secondary steel plating and metal resist plating, a steel etching device, a device for stripping the metal resist plated portion, and a water washing device accompanying these devices are required to be installed separately. A transport mechanism and workers are required to communicate between these devices, and the processing time increases.Furthermore, such plating equipment has the disadvantage that the front and back surfaces of the substrates are lined up in a row along the direction of travel. A format that moves at a constant speed ↑! Therefore, there are disadvantages such as the length of the plating tank becoming unnecessarily long and the area of the equipment being wasted.

[Means for solving the problem] For this purpose, each of the above-mentioned devices is arranged in series in a series of continuous tanks, and the substrate material to be processed is held on a hanger rack vcFd. It is sufficient to sequentially process each tank body from is extremely narrow! Therefore, it is possible to shorten the total length of a series of continuous tanks.

The present invention was developed focusing on the above points! An example of an apparatus for implementing the present invention will be described below with reference to the drawings.

[Embodiments of the invention]

In Figure 1, 1 is a continuous tank ''1%, which is assembled as a continuous tank in which a large number of tanks a..., b..., C..., d..., etc. are arranged in a row. In this case, tank a group is tank 1, which performs pretreatment such as degreasing, water washing, and pickling, from the left side of the figure.
Yes, the tank group is a secondary steel plating tank, the tank C group is a pre-treatment tank such as water washing and pickling, and the tank D group is a metal resist plating tank.A series of processes such as pre-treatment tank and etching tank should be performed below. Various types are arranged. In this case, as is clear from FIG. 2, tanks a, C, etc. have rectangular cross sections whose length along the longitudinal direction of the continuous tank 1 is shorter than the length in the lateral direction. B, d, etc. have a nearly square cross section. This is done when the substrate material is sequentially processed in each tank.

d-1' is 1 in order to take a longer processing time, and in this tank f, the substrate material is subjected to the necessary treatment for a longer time than in tank ah C.

A guide rail 2 is provided horizontally above the continuous tank 1, and a hanger rack 3 is moved intermittently at a constant period along this guide rail 2. Each time the hanger rack 3 is moved, the suspended substrate material 4 is lowered into the tank for processing, and then lifted up and moved to the next tank, repeating the sequence. In other words, it is equipped with a self-propelled mechanism and an elevating mechanism, and is capable of periodically moving and elevating the substrate material in each unit tank under program control by an appropriate drive control mechanism, such as a tld' microcomputer, to continuously fabricate a large number of printed wiring boards. It is possible to manufacture the product in a specific manner.

Note that FIG. wc4 shows the inside of the etching tank and metal resist stripping tank of the continuous tank 1 in the above embodiment. In other words, the substrate material 4 that has come above this tank is
The machining inside this tank is carried out via the lift mechanism of the nail rack. Inside the tank, there is a box-shaped J channel 5.5 with a black coating with many small holes installed, and the etching solution or peeling inside the tank is installed. Liquid is then injected and circulated through this small hole via the pump 6. As a result, the substrate material 4 is sprayed with the processing liquid from both the front and back surfaces, and is etched or peeled evenly and reliably.

Next, FIG. 5 shows another example of the embodiment shown in FIG. 1.
be. That is, in FIG. 5, there is one continuous tank IK as in FIG. 1, but the guide rail 2 provided above it extends back and forth beyond the continuous tank 1.
A large number of hanger racks 3 that engage with this guide rail and move intermittently work together to raise and lower a series of long rods 3', and these rods 6' have various arrangements. A number of substrate materials 4 are suspended from a fixed gap 1 equal to the pitch. In addition, the tank is a series of multiple tanks a,
The substrate material passes through each unit tank a, so that the processing time required for processing in the tank is obtained.

As a result, the apparatus 1 shown in FIG. Inside the tank ↑, each one is given the required action and then moved to the next tank one after another.

In this way, completed substrates are continuously obtained every time the hanger rack 301 is raised and lowered.

[Effect]

The present invention has the above-mentioned configuration, and the necessary processes are carried out in a continuous tank 1 formed as a series of combined tank groups, and in a hanger rack 6 that moves intermittently while raising and lowering the substrate material 4 to be treated. Since there is one device that is held perpendicular to the longitudinal direction of the continuous tank 1 and passes through each treatment tank in sequence, there is no need for any intermediate work like in conventional equipment, and the installation area of the entire equipment is reduced. Moreover, the plating solution and stripping solution are attached to the coating rack 3 in the same way as the substrate material 4 to be handled. The plating is peeled off.
As a result, the hanger rack returns to its original state at the end, and there are many advantages, such as eliminating the need to constantly remove deposits from the hanger rack at each step, as in the conventional method.

[Brief explanation of drawings]

The drawings show an embodiment of the apparatus according to the present invention; FIG. 1 is a side view, FIG. 2 is a front view, FIG. 3 is a plan view of a tank group, and FIG. 4 is a tank in the tank group. Fig. 5 is a side view "t' showing another example of the interior of Fig. 1. 1... Continuous tank, 2... Guide rail, 6... Hanger rack, 3'...rod, 4...substrate material. (2 other people) -

Claims (1)

[Claims] 1. The substrate material to be processed is suspended on a hanger rack that moves up and down intermittently at a constant cycle, and the substrate material is transferred from a number of processing tanks divided according to the above-mentioned cycle. 1. A continuous manufacturing method for printed wiring boards, characterized in that processing is carried out sequentially in each tank of a combination of tank groups. 2. A continuous tank consisting of a large number of tanks divided in accordance with a certain period and arranged corresponding to a series of processes, and a continuous tank in which the front surface of the substrate material is suspended orthogonally to the longitudinal direction of the continuous tank. 1. A continuous manufacturing apparatus for printed wiring boards, comprising a hanger rack that engages with a guide rail provided above and moves intermittently at the above-described period.