JPH0333119Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a jig for supporting a printed circuit board when an electronic component chip is mounted on the printed circuit board using a chip mounter, and is applicable to various types of printed circuit boards. It relates to something that can be used with a board.

(Prior art) A chip mounter for mounting electronic component chips on a printed circuit board is equipped with an XY table with a large number of insertion holes arranged in a grid pattern, and back-up pins can be inserted into the insertion holes at arbitrary positions. It is configured to be implanted to support a printed circuit board.

(Problem that the invention aims to solve) However, the insertion holes in the above-mentioned XY table are rough, and the back-up pins are relatively thick, so depending on the shape of the printed circuit board, it is not always possible to erect the back-up pins in arbitrary positions. There was a drawback that I couldn't do it.

In particular, for double-sided boards, chips are mounted on one side and then passed through a furnace.Depending on the thickness of the board, warpage may occur during this process, so backing up is required. There was an inconvenience that when the height became high, there was no place to erect the backup pin.

On the other hand, if this XY table is to be replaced depending on various printed circuit boards, it is expensive and uneconomical.

The purpose of this invention is to eliminate the above-mentioned conventional drawbacks,
The purpose of the present invention is to provide a jig that can be easily mounted on a conventional XY table in a chip mounter and can be used with various printed circuit boards.

(Means for Solving the Problems) The present invention is a jig for supporting a printed circuit board when an electronic component chip is mounted on a printed circuit board by a chip mounter. The XY table has a large number of insertion holes arranged in a grid pattern, and a back-up pin for supporting a printed circuit board can be installed in any insertion hole. A plurality of sub-tables are formed with a large number of pin insertion holes that are freely fixed and arranged in a grid pattern, and the pin insertion holes have different bits and sizes. a joining pin having a threaded portion screwed into the lower half of the connecting pin, and an insertion portion formed at the lower portion to be inserted into the insertion hole of the XY table in exchange for the backup pin;
A sub-backup pin is installed in a pin insertion hole at an arbitrary location of the sub-table to support a printed circuit board.

(Function) Prepare various sub-tables with different pin insertion hole pitches and sizes, and sub-backup pins to be installed on these tables, so that the printed circuit board can be placed on the chip mounter.
If the back-up pins that should be placed on the XY table are not suitable, fix a sub-table that can accommodate the printed circuit board on the XY table via a joint pin screwed into the underside of the sub-table, and use the pins formed on this sub-table. Select the insertion hole and set up the sub-backup pin to support the printed circuit board. This allows for easy handling without replacing the chip mounter's XY table.

(Example) An example of the chip mounter jig according to the present invention will be described based on the drawings.

A chip mounter (not shown) for mounting an electronic component chip 23 on a printed circuit board 21 is provided with an XY table 11 that can slide in the XY directions via a guide rail. Insertion holes 12 are formed into which backup pins 13 can be inserted in a grid pattern at predetermined pitches.

Reference numeral 1 denotes a sub-table in which pin insertion holes 2 are formed in a grid shape, and various pin insertion holes 2 with different pitches and sizes are prepared. 3 is a joining pin, and the above-mentioned XY table 11 is attached at the bottom.
An insertion portion 4 that can be inserted into an insertion hole 12 in
As is clear from the drawing, a short threaded portion 5 is formed in the upper part to be screwed into the lower half of the pin insertion hole 2 of the sub-table 1. By screwing into the lower half of the insertion hole 2, the insertion part 4 is made to protrude from the lower surface of the sub-table 1, and by inserting this insertion part 4 into the insertion hole 12 in place of the back-up pin 13, the sub-table 1 to XY table 11
It is designed to be fixedly placed at the top.

Reference numeral 6 denotes a sub-backup pin inserted into the pin insertion hole 2, which is similar to the backup pin 13.
The lower part 6a is inserted into the pin insertion hole 2 of the sub-table 1, and the upper part 6b is inserted into the pin insertion hole 22 formed in the printed circuit board 21. 6a
Various types of pin insertion holes 2 are available with different diameters, so that when various types of the above-mentioned sub-tables 1 are used, it is possible to correspond to the diameter of the pin insertion hole 2.

If the printed circuit board 21 can be supported by the back-up pin 13 set on the XY table 11 of the chip mounter, it can be used as is in the conventional manner, but if the printed circuit board 21 cannot be supported by the XY table 11, the printed circuit board 21 can be supported. A sub-table 1 that can be used is selected and fixed on an XY table 11 via a joining pin 3, and a sub-backup pin 6 is set up in an arbitrary pin insertion hole 2 of this sub-table 1 to support a printed circuit board 21.

(Effects of the invention) According to the chip mounter jig according to the invention, by preparing various sub-tables with pin insertion holes of different pitches and sizes and sub-backup pins that can be inserted into the pin insertion holes, If the printed circuit board cannot be supported by the back-up pins that should be placed on the XY table of the chip mounter, a sub-table that can accommodate the printed circuit board is fixed on the XY table via joint pins, and the pin insertion hole formed in this sub-table is inserted. The printed circuit board can be supported by selectively erecting sub-backup pins, thereby eliminating expensive
This can be easily done without replacing the XY table.

[Brief explanation of the drawing]

The drawing is an exploded perspective view showing an embodiment of the chip mounter jig according to the present invention. 1: Sub table, 2: Pin insertion hole, 3: Joining pin, 4: Insertion part, 5: Thread part, 6: Sub back up pin, 11: XY table, 12: Insertion hole, 13: Back up pin, 21: Print Board, 22: Pin insertion hole, 23: Electronic component chip.

Claims (1)

[Scope of utility model registration request] A jig for supporting a printed circuit board when an electronic component chip is mounted on a printed circuit board by a chip mounter, and is arranged on the chip mounter and has a number of insertion holes arranged in a grid pattern. an XY table in which backup pins for supporting a printed circuit board are implanted in insertion holes at arbitrary locations;
A number of pin insertion holes arranged in a grid are formed, and there are multiple types of sub-tables with different pitches and sizes of the pin insertion holes, and the upper part has screws in the lower half of the pin insertion holes of the sub-table. A joint pin has a threaded part to be inserted, and an insertion part is formed at the bottom to be inserted into the insertion hole of the XY table in exchange for the backup pin, and a joint pin can be inserted into any part of the sub-table to support the printed circuit board. A chip mounter jig comprising: a sub-backup pin implanted in a pin insertion hole;