JPH06297679A - Printer for printed wiring board - Google Patents

Abstract

PURPOSE:To provide a printer reducing the number of working processes and shortening working time and realizing an experimentally manufactured printed wiring board of high quality within a short period of time in the production of the printed wiring board used in various electronic machineries. CONSTITUTION:A printer for a printed wiring board is equipped with the mat layer 24f composed of a resin or rubber arranged on a printing bed 24a, the almost circular aligning plate 24g having a linear groove 24h formed thereto provided on the mat layer 24f and a plurality of movable members 24j having the guide pins 24c fitted in the groove 24h arranged thereto. By this constitution, complicated working parts requiring skill for releasing the fixing of two circular movable members of a conventional printing head, rotating and moving the movable members to a position so as to be capable of inserting the guide pins arranged to the movable members in the guide holes of a printed wiring board and moving and adjusting the movable members to a prescribed position where the guide patterns of a screen plate must be set in a guide pin inserted state to fix the same can be omitted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer for a printed wiring board used for manufacturing a printed wiring board used in various electronic devices such as a television receiver and a video tape recorder.

[0002]

2. Description of the Related Art In recent years, printed wiring boards, which have been widely used in various electronic devices, have been remarkably increased in wiring density and surface-mounted electronic parts due to downsizing and multifunction of electronic devices. The load at each stage of development such as design, printed wiring board design prototype, electronic component mounting, and electronic device operation confirmation is also large.

In particular, in the design and trial manufacture of printed wiring boards, demands for short delivery and high quality are remarkable.

However, the printed wiring board prototype is often processed by handwork. Especially when the printed wiring board is prototyped using the screen printing method, the number of times of screen printing depends on the etching resist, the solder resist and the road map. Printing 3 to 5 times,
Since it is necessary to guarantee the relative position accuracy in each screen printing, it has been extremely difficult to perform such work in a short time.

The following will describe a trial production of a printed wiring board using a screen printing method with a conventional printing machine for a printed wiring board.

FIG. 3 shows a printing machine for handwork used in the conventional trial manufacture of a printed wiring board.
FIG. 6 is a perspective view showing a process of aligning a screen plate and a printed wiring board in a printed wiring board prototype process.

3 to 8, 1 is a printed wiring board, 1a is a guide hole for fixing the printed wiring board 1, 3 is a screen plate for printing, 3a is a screen plate 3
Mark pattern for alignment between the printed wiring board 1 and the printed wiring board 1, 4a is a print bed on which the printed wiring board 1 is installed, 4b is a circular movable member fixed to the print bed 4a by a screw or the like, and 4c is a movable member. 4b is a guide pin projecting from the holder 4b, 4d is a holder for holding and fixing the screen plate 3, and 4e is a print bed 4a for aligning the guide hole 1a with the guide mark pattern 3a.
Is a knob for moving the XY direction.

The operation of the trial manufacture of a printed wiring board by the printing machine for a printed wiring board constructed as above will be described below.

First, a copper clad laminate (not shown) cut into a predetermined size is drilled by an NC drilling machine or the like to form a printed wiring board 1 having guide holes 1a as shown in FIG. obtain.

Next, as shown in FIG. 5, two circular movable beds 4a of the printing machine are installed so that the guide pins 4c arranged on the movable member 4b can be inserted into the guide holes 1a of the printed wiring board 1. Each of the movable members 4b is moved / removed by releasing the fixation of the member 4b and rotating / moving it to a substantially predetermined position.
The guide pin 4c is inserted into the guide hole 1a of the printed wiring board while being adjusted, and the movable member 4b is moved / adjusted with the guide pin 4c inserted, and the guide mark pattern 3a of the screen plate 3 is set. The printed wiring board 1 is moved and fixed at a predetermined position.

Next, as shown in FIG. 6, the screen plate 3
Alignment guide mark pattern 3a formed on the substrate
While aligning the guide hole 1a of the printed wiring board 1 with the guide hole 1a of the printed wiring board 1, the screen plate 3 is held by the holder 4d.
Set to and fix.

Next, as shown in FIG. 7, while visually confirming from above the screen plate 3, the knob 4e is operated so as to move the printing bed 4a in the XY directions, and the position for alignment formed on the screen plate 3 is adjusted. After aligning the guide mark pattern 3a of 1 with the guide hole 1a of the printed wiring board 1,
Printing of the etching resist pattern is started.

Next, the printed wiring board 1 on which the etching resist pattern is formed is etched using a solution of cupric chloride or the like to remove the etching resist, and then a conductor pattern is formed to form the etching resist. A screen plate on which a solder resist pattern is formed, a plate on which a road map pattern is formed, etc. are aligned by the same procedure as the formation, and a solder resist, a road map, etc. are formed on the printed wiring board 1.

[0014]

However, in the above-mentioned conventional structure, the fixing of the two circular movable members 4b of the print bed 4a is released, and the guide pins 4c arranged on the movable member 4b are printed on the printed wiring. Guide hole 1a of plate 1
Rotating / moving to a substantially predetermined position so that each can be inserted, inserting / moving the movable pin 4c into the guide hole 1a of the printed wiring board 1 while moving / adjusting each movable member 4b, and inserting the guide pin 4c. Then, by moving and adjusting each movable member 4b, the printed wiring board 1 is moved and fixed at a substantially predetermined position where the guide mark pattern 3a of the screen plate 3 is set, and the alignment formed on the screen plate 3 is adjusted. While aligning the guide mark pattern 3a for use with the guide hole 1a of the printed wiring board 1 so as to be substantially aligned with each other, the screen plate 3 is set and fixed in the holder 4d, while visually checking from above the screen plate 3. , The knob 4e is operated to move the print bed 4a to XY.
A complicated procedure such as aligning the guide mark pattern 3a for alignment and the guide hole 1a of the printed wiring board 1 formed on the screen plate 3 by moving in the direction is required.

Such a complicated process requires a similar procedure for forming a solder resist on a printed wiring board and a road map on the front and back surfaces, including the formation of an etching resist, which requires a great deal of man-hours and time. Had the problem of spending.

Further, as shown in FIG. 8, the printed wiring board 1
When the guide hole 1a formed on the printed wiring board 1 is not formed on a straight line parallel to the longitudinal direction of the printed wiring board 1, the position of the guide hole 1a of the printed wiring board 1 and the guide mark pattern 3a for alignment is further increased. There is a problem that a skilled worker is required for the matching.

The present invention solves the above-mentioned conventional problems and improves and shortens the work man-hours and time for trial production of a printed wiring board without requiring a skilled work procedure, and provides a high-quality trial printed wiring with a short delivery time. An object of the present invention is to provide a printing machine for a printed wiring board that realizes a board.

[0018]

To achieve this object, a printing machine for printed wiring boards according to the present invention comprises a mat layer made of resin or rubber which is arranged on a printing bed and movable in the XY directions. A substantially circular alignment plate which is in close contact with the mat layer and in which a linear groove is formed, and a plurality of movable members fitted in the groove of the alignment plate and provided with guide pins, It has a configuration including a matting layer and a screen plate for printing which is installed so as to face the mat layer.

[0019]

With this structure, the movable members are rotated / rotated so that the two circular movable members of the print bed are unlocked and the guide holes of the printed wiring board can be inserted into the guide pins provided on the movable members. Omitting the complicated and skilled work parts such as moving and adjusting / fixing each movable member to a substantially predetermined position where the guide mark pattern of the screen plate is set while the guide pin is inserted be able to.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a printing machine for a printed wiring board according to an embodiment of the present invention, and FIGS. 2 (a) to 2 (c) show a screen plate in the manufacturing process of the printed wiring board prototype of the embodiment. It is a perspective view which shows the alignment process of a printed wiring board.

In FIGS. 1 and 2, 21 is a printed wiring board, 21a is a guide hole for fixing the printed wiring board 21 provided on the printed wiring board 21, and 23 is an etching resist pattern or the like on the printed wiring board 21. A printing screen plate for printing, 23a is a guide mark pattern for aligning the screen plate 23 and the printed wiring board 21, 24a is a printing bed, and a mat layer made of soft vinyl chloride is provided on the printing bed 24a. Alignment plate 24 made of hard acrylic resin via 24f
have installed g.

Here, a large frictional force between the soft vinyl chloride and the hard acrylic resin can be obtained, and the alignment plate 24g can be easily fixed only by placing it on the mat layer 24f by this frictional force.

A linear groove 24h is formed in the alignment plate 24g, and a guide pin 24c for fixing the printed wiring board 21 is provided in the groove 24h and is made of the same hard acrylic resin as the alignment plate 24g. The two movable members 24j are fitted into the groove 24h.

Further, the reference numeral 24e designates the print bed 2 for aligning the guide hole 21a with the guide mark pattern 23a.
4a is a knob for moving the 4a in the XY directions. Furthermore, 2
4d is a holder for holding and fixing the screen plate 23.

The operation of a trial production of a printed wiring board by the printing machine for a printed wiring board configured as described above will be described below with reference to FIGS. 1 and 2.

First, a printed wiring board in which a copper clad laminate (not shown) cut into a predetermined size is drilled with an NC drilling machine to form guide holes 21a as shown in FIG. 2A. You get 21.

Next, as shown in FIG. 1, a print bed 24a is provided.
A positioning plate 24g having grooves 24h is placed on the upper mat layer 24f, and the grooves 24h of the positioning plate 24g are placed.
The guide pin 24c is fitted to the groove 24h at two positions of
The movable member 24j having the
After the guide pin 24c of the movable member 24j is inserted into the two guide holes 21a on the 4j and the printed wiring board 21 is installed and the predetermined position where the movable member 24j is fixed is determined, the printed wiring board 21 is fixed. 2B, the movable member 24j is fixed with an adhesive tape or the like, the guide hole 21a is inserted into the guide pin 24c of the fixed movable member 24j, and the printed wiring board 21 is set again.

Next, the screen plate 23 is attached to the holder 24d.
2 and fix it, lower it to a position where printing work is performed, move the alignment plate 24g manually, and position the guide hole 21a of the printed wiring board 21 and the screen plate 23 as shown in FIG. 2 (c). The guide mark pattern 23a for alignment is aligned. After visually confirming the alignment, and if there is a position correction, the print bed 24a is moved in the XY directions by operating the knob 24e to perform fine adjustment, and then the printing of the etching resist pattern is started. .

Next, the printed wiring board 21 on which the etching resist pattern is formed is etched using a solution of cupric chloride or the like to remove the etching resist and form a conductor pattern. According to the procedure described above, the screen plate on which the solder resist pattern is formed, the plate on which the road map pattern is formed, etc. are aligned, and the solder resist, the road map, etc. are printed on the printed wiring board 21 to be formed.

Here, the mat layer 24f and the alignment plate 2
By forming a coating layer containing a filler such as conductive carbon on the surface of 4 g, a screen plate, a squeegee for printing, or a printed wiring board when an etching resist pattern, a solder resist pattern, or a roadmap pattern is formed by printing. Efficiently suppresses and removes static electricity generated by contact and friction of the product, prevents floating dust from adhering to screen plates and printed wiring boards, disconnects and shorts in conductor patterns, and adheres foreign matter to solder resist and roadmap. The occurrence of various problems can be suppressed.

As described above, according to this embodiment, the mat layer 24f of the soft resin is formed on the printing bed 24a, and the hard acrylic resin is formed on the mat layer 24f in which the linear grooves 24h that can be adhered are formed. Almost circular alignment plate 2
4g and a guide pin 24c on the alignment plate 24g
By providing a plurality of movable members 24j in which the movable members 24j are provided, the fixing of the movable members fixed by the screws of the conventional print bed can be released, and the movable members can be inserted into the guide holes of the printed wiring board by the guide pins. It is possible to omit rotating / moving to a substantially predetermined position, and similarly moving / adjusting / fixing the movable member to a substantially predetermined position to be set on the screen plate.

Even when the guide hole 21a formed in the printed wiring board 21 is not formed on a straight line parallel to the longitudinal direction of the printed wiring board 21, the guide hole 21a for alignment with the guide hole 21a of the printed wiring board 21 is aligned. The alignment with the guide mark pattern 23a can be easily realized in a short time.

Even if the mat layer 24f of this embodiment is made of rubber instead of the soft resin, sufficient friction can be obtained between the mat layer 24f and the positioning plate 24g of the hard acrylic resin, and the mat layer 24f and the position of the mat layer 24f can be adjusted. The mating plate 24g is fixed without slipping.

In the present embodiment, the printed wiring board 21 is a single-sided printed wiring board, but the printed wiring board 2
It goes without saying that 1 may be a double-sided printed wiring board or a multilayer printed wiring board.

[0036]

As described above, according to the present invention, a mat layer of a soft resin is provided on a printing bed, a substantially circular alignment plate having a linear groove that can be adhered to the mat layer, and a guide pin. By providing a plurality of movable members on which the
As a result, it is possible to realize an excellent printing machine for printed wiring boards, which can be shortened and can realize the production of high quality prototype printed wiring boards with a short delivery time.

[Brief description of drawings]

FIG. 1 is a perspective view of a printer for a printed wiring board according to an embodiment of the present invention.

2A to 2C are perspective views of a printing machine for a printed wiring board, a screen plate and a printed wiring board in the manufacturing process of the printed wiring board prototype of the same embodiment.

FIG. 3 is a perspective view of a conventional printing machine for printed wiring boards.

FIG. 4 is a perspective view of a conventional printed wiring board.

FIG. 5 is a perspective view of a conventional printed wiring board and a printing machine for the printed wiring board.

FIG. 6 is a perspective view of a conventional printing machine for printed wiring boards.

FIG. 7 is a perspective view of a conventional printing machine for printed wiring boards.

FIG. 8 is a perspective view of a conventional printed wiring board.

[Explanation of symbols]

 21 printed wiring board 23 screen plate 24a printing bed 24c guide pin 24f mat layer 24g alignment plate 24h groove 24j movable member

Claims (3)

[Claims] 1. A substantially circular position in which a mat layer made of resin or rubber disposed on a printing bed and movable in the XY directions, and a linear groove that can be adhered to the mat layer are formed on the mat layer. For a printed wiring board provided with a mating plate, a plurality of movable members fitted in the grooves of the alignment plate and having guide pins arranged thereon, and a screen plate for printing which is installed face-to-face with the mat layer. Printer. 2. The printing machine for a printed wiring board according to claim 1, wherein the mat layer is made of soft vinyl chloride, and the alignment plate and the movable member are made of hard acrylic resin. 3. The method according to claim 1, wherein the surface of the mat layer or the alignment plate is coated with a conductive resin.
The printing machine for printed wiring boards described.