JP2794634B2 - Printed board manufacturing method and suction hand - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a printed board and a suction hand for exposing a printed circuit board by applying a mask film, and more particularly, to reading a bar code of the mask film to obtain a product number of the mask film. And a method of manufacturing a printed circuit board for confirming the product number of a printed circuit board.

[Conventional technology]

In the manufacturing process of a printed board, an exposure process is performed by applying a mask film to a printed board. Setting a mask film on an exposure machine has been performed manually. Further, when setting the mask film, the part number of the mask film is visually checked to prevent mistakes.

[Problems to be solved by the invention]

However, setting or checking manually requires a lot of man-hours and cannot prevent an error in setting. Therefore, automation of these steps using a robot is required.

In order to fulfill such a request, the mask film is suction-held by a suction hand and applied to a bar code reader to read the bar code of the film. However, there are the following problems.

(A) The bar code reader projects light generated by itself on a bar code label, detects reflected light of the light, and performs a decoding process. Therefore, a code printed with a black bar and a space (colorless) on a colorless and transparent film almost transmits the projected light and cannot detect the reflected light.

(B) The mask film has a thickness of about 0.2 mm and is very flexible. Therefore, if the bar code portion is bent, the reflected light has an adverse effect.

The present invention has been made in view of such a point,
An object of the present invention is to provide a method of manufacturing a printed board for automatically setting a mask film on a printed board.

Another object of the present invention is to provide a suction hand having a reflection plate capable of reliably reading a bar code for confirming the product number of a mask film.

[Means for solving the problem]

In the present invention, in order to solve the above-mentioned problems, in a printed board manufacturing method of performing exposure by applying a mask film to a printed board, reading a code of the printed board, storing a product number of the printed board in a control device, The mask film corresponding to the printed board is moved to a position readable by a bar code reader with a transport device, the bar code representing the product number of the mask film is read by the bar code reader, and the product number of the printed board and the mask film are read. Check the correspondence of the part numbers of
A method for manufacturing a printed board, wherein exposure is performed by applying the mask film to the printed board.

Further, in order to read a bar code representing a product number of a mask film for exposing a printed circuit board, in a suction hand attached to a tip of a transfer device for moving the mask film, light from a bar code reader is applied to the suction hand. A suction hand provided with a reflecting plate for reflection is provided.

[Action]

First, the code on the printed circuit board is read and the product number is stored. Since a mask film corresponding to the printed circuit board is prepared, the transport device transports the mask film to the position of the bar code and reads the bar code. Confirm that the part numbers of the printed circuit board and the mask film match, and perform exposure.

Even if light is applied to the bar code on the mask film, the light passes through the bar code, so that a reflection plate is provided on the suction hand to reflect the light from the bar code reader to read the bar code accurately.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a view showing an example of an automatic exposure step of a method for manufacturing a printed board using a robot hand according to the present invention.

The printed circuit board 30 is formed by covering an insulating plate such as glass epoxy with copper. The printed board 30 is sent to the printed board code reading unit 22 by the conveyor 21. Here, the hole code indicating the product number of the printed circuit board 30 is read by the code reader 23 and sent to the control device 20.
The control device 20 uses a personal computer for FA. Subsequently, the printed board 30 is sent to the work aligning section 32 by the carry-in conveyor 31, accurately positioned on a jig (not shown), and sent to the exposure section 33.

The control device 20 determines whether to set a new mask film based on the read product number of the printed circuit board, and instructs the robot control device 55 to set a new mask film.

When there is a command to set a new mask film, the robot controller 55 operates the robot 50 and uses the suction hand 2 attached to the tip of the arm 51 to move the position 8c.
Take the old mask film on the table 42 and position 8b on table 42
Return to Next, the new mask film 8 at the position 8a is sucked and lifted. Next, the mask film 8 is positioned above the bar code reader 10, and a positioning signal is sent to the control device 20. The control device 20 issues a reading command to the bar code reader 10 to read the bar code on the mask film 8.

Mask film part number and printed circuit board read earlier
The part number of 30 is checked, and if they match, a match signal is sent to the robot controller 55, and the robot controller commands the robot 50 to set the mask film 8 at the position 8c of the exposure unit 33.

Next, exposure is performed. When the exposure is completed, the printed circuit board 30 is exposed.
Is sent to the next developing step by the carry-out conveyor.

When the product number read by the barcode reader 10 is different from the product number of the printed circuit board 30 previously read, the control device 20 displays an alarm on a display device (not shown).

Usually, the mask films 8 are placed in the order in which they are used.

FIG. 2 is a detailed view of the suction hand, and FIG. 3 is a bottom view as viewed from arrow A in FIG. The suction hand 2 is attached to the tip of the robot arm 51. Suction hand 2
Has six plates 5a to 5f radially mounted via a member 2a. Each of the plates 5a to 5f has suction pads 6a to 6f at the tip, and sucks the mask film 8. Air is sucked from the suction pads 6a to 6f by the hoses 4a to 4d, and the sucked air is sucked up from the hose 4g.
A bar code 9 indicating a product number is printed on the mask film 8, and when light from a bar code reader 10 shines,
The light is reflected by the reflection plate 7 and is reflected by a bar code reader.
10 can read the bar code 9.

The reflecting plate 7 is attached to the member 2a by a plate 12, and in order to balance the suction pad,
Is provided. The reflecting plate 7 reflects light transmitted through the bar code 9 from the bar code reader 10,
The bar code 9 portion of the mask film 8 is kept flat so that the bar code reader 10 can read the bar code 9 accurately.

FIG. 4 (a) is a detailed view of the reflection plate, and FIG. 4 (B) is a bottom view as viewed from the arrow B in FIG. 4 (a). It is composed of acrylic members 7a and 7b. The member 7a has an intake hole 7h at the center. The member 7b has four holes 7c for intake
7f, and a suction groove 7g is provided on the surface 7j. The groove 7g sucks the mask film 8 so that the mask film 8 is in close contact with the surface 7j of the member 7b, and keeps the mask film 8 flat, and the surface 7j reflects light from the bar code reader 10. is there. Of course member 7b
Is opaque white.

Instead of the groove 7g, the tip of each of the holes 7c to 7d can be formed in a conical shape, or the tip of each of the holes can be formed in a track shape.

In the above description, the movement of the mask film is performed using a robot, but a dedicated transfer device may be used. In addition, there are many places to put the mask film, and according to the printed circuit board,
It is also possible to configure such that a mask film is selected and set.

〔The invention's effect〕

As described above, in the present invention, the mask film is automatically set, so that the exposure process can be automated in the printed board manufacturing process, thereby reducing the number of personnel and the manufacturing cost.

Further, since the product number of the printed circuit board and the product number of the mask film are confirmed by reading the bar code of the mask film, it is possible to check for a human error that occurs at the stage of assembling the mask film, thereby eliminating waste due to manufacturing errors. . In addition, the bar code can be read accurately because the reflection plate is provided on the suction hand.

Furthermore, the quality yield is improved because human hands are less likely to touch the mask film.

[Brief description of the drawings]

FIG. 1 is a view showing an example of an automatic exposure step in a method of manufacturing a printed board using a robot hand of the present invention, FIG. 2 is a detailed view of a suction hand, and FIG. 3 is a bottom view as viewed from an arrow A in FIG. FIG. 4 (a) is a detailed view of the reflector, and FIG. 4 (b) is a bottom view as viewed from the arrow B in FIG. 4 (a). 2 ... Suction hands 5a-5d ... Plates 6a-6f ... Suction pads 7 ... Reflector 7g ... Groove 8 ... Mask film 9 ... Bar code 10 ... Bar code reader 20 ... Control device 30 ... … Printed circuit board 33 …… Exposure unit 50 …… Robot 55 …… Robot controller

Claims (6)

(57) [Claims] 1. A printed board manufacturing method for exposing a printed board by applying a mask film to a printed board, wherein a code of the printed board is read, a product number of the printed board is stored in a control device, and a mask corresponding to the printed board is provided. The film is moved to a position where a bar code reader can read the film with a transport device, and the bar code representing the product number of the mask film is read with the bar code reader, and the correspondence between the product number of the printed circuit board and the product number of the mask film is confirmed. And exposing the printed circuit board to the mask film for exposure. 2. An alarm is displayed on a display device of the control device when the product number of the printed board and the product number of the mask film do not match.
The method for producing a printed board according to the above item. 3. The method according to claim 1, wherein said transfer device is a robot. 4. In a printed circuit board manufacturing method in which a mask film is applied to a printed circuit board to perform exposure, a bar code representing a product number of the mask film is read by a bar code reader. A suction hand attached to a tip end, wherein the suction hand is provided with a reflector for reflecting light from a bar code reader. 5. The suction hand according to claim 4, wherein a hole for suction is provided on a surface of said suction hand. 6. The suction hand according to claim 5, wherein said hole has a shape in which a groove is provided on an outer periphery of a reflection plate.