JPH04354196A - Fixing and separating apparatus for multilayer printed board - Google Patents

Abstract

PURPOSE:To automate fixing, separating of a multilayer printed board by reference pins by calculating a feeding amount of a table in response to a detection pulse of a pulse detector attached to a feed threaded shaft. CONSTITUTION:Guide holes 30A, 30B of a multilayer printed board 1 are engaged with guide pins 9A, 9B telescopically protruding from a placing surface of a table 7. A threaded shaft 25 is rotated by a handle 28 or a motor to move the pin 9B in a direction C, thereby regulating an interval of the pins 9A, 9B. A pulse detector 27 made of a rotary encoder is provided at an end of a bearing 40 of the shaft 25 to generate pulses of the number corresponding to a rotating amount of the shaft 25, i.e., a moving amount of the pin. The generated pulses are calculated by a calculator, and converted to a drive command value to a feed motor 10 of the table 7, and hence the board can be fixed, separated merely by pressing a start button to match the pin to the board.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a device for fixing and separating multi-layered printed circuit boards, and more particularly to a device for fixing and separating multi-layered printed circuit boards using reference pins. This invention relates to a device for removing and separating printed circuit boards from each other.

0002

[Prior Art] In this type of conventional device, stacked multilayer printed circuit boards are fitted onto guide pins on a fixed table, and reference pin units are moved and installed at respective guide pin positions to attach and detach the reference pins. It was being implemented. In this well-known device, since the table is fixed, it is necessary to manually install a reference pin unit at each guide pin position, which makes the device itself complicated.
If operation and maintenance are not easy, and if the guide hole spacing varies depending on the size or type of the printed circuit board, select a table with fixed spacing between guide pins that corresponds to the guide hole spacing. In some cases, the work becomes extremely complicated and the processing cost increases.

0003

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus that eliminates the drawbacks of the above-mentioned prior art and also makes it possible to automate the fixing and separation of multilayer printed circuit boards using reference pins. .

0004

[Means for Solving the Problem] According to the present invention, this problem is achieved by starting from the prior art, by making the table guideable on the support, and by providing an interval between guide pins that protrude retractably into the mounting surface of the table. Furthermore, the table is moved according to this interval, this interval is adjusted by the feed screw shaft, and the table feed amount is calculated according to the detected pulse of the pulse detector attached to this feed screw shaft. This can be solved by providing a control device that outputs it as a command value.

[0005]

[Function] In the multilayer printed circuit board fixing and separating device according to the present invention, first, by making the interval between the guide pins adjustable, even printed circuit boards with different dimensions between the guide holes can be easily installed on the table; Furthermore, the distance between the guide pins can be easily adjusted manually or by push button operation by adjusting the distance between the guide pins using the feed screw shaft, and the control system can calculate and output a command value based on pulses corresponding to the adjusted distance between the guide pins. The device determines an accurate feed amount using a simple calculation formula, making it possible to feed the table in accordance with this feed amount.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained in detail according to an embodiment shown in the drawings. FIG. 1 shows a multilayer printed circuit board 1 fixed to each other by reference pins 5A and 5B, and the multilayer printed circuit board 1 has a structure in which a plurality of printed circuit boards 3 are sandwiched between an upper board 2 and a lower board 4. (See Figure 2). The multilayer printed circuit board 1 constructed in this manner is then subjected to hole drilling, and then the reference pins are removed and the multilayer printed circuit board 1 is separated into a single printed circuit board 3. As shown in FIG. 2, the guide holes 30A and 30B of the multilayer printed circuit board 1 are fitted with guide pins 9A and 9B that protrude retractably from the mounting surface of the table 7 (see second from the left in FIG. 2). ).

In this case, the table 7 is moved in the guiding direction on a slide 22 provided on a support base 21 (see FIGS. 5 and 6) by rotating a screw shaft 8 screwed into a fixing nut 20 on the table 7 by a motor 10. It is driven by arrow 13 (see FIG. 5). FIG. 2 shows how the reference pin 5A is driven into the guide hole 30A of the multilayer printed board 1 held by the guide pin 9A. It shows how to drive into the periphery of the substrate 1, and to the right of this shows how to drive another reference pin 5B.

One guide pin 9A is a shaft pin that protrudes from the air cylinder 24 fixed to the table 7, and protrudes retractably from the surface of the table 7 on which the printed circuit board 1 is placed as shown by arrow A. The other guide pin 9B is a shaft pin that protrudes retractably from the mounting surface of the multilayer printed circuit board 1 through a slit formed in the feeding direction of the table 7, and like the guide pin 9A, this shaft pin is also connected to the air cylinder 24. This is the axis pin. The air cylinder 24 of the guide pin 9B is fixed to a nut 26, and the nut 26 is connected to a slide 2 provided along a slit on the lower surface of the table 7.
9 and is screwed onto a screw shaft 25, one end of which is similarly supported by a bearing provided on the lower surface of the table 7. In this way, attach the screw shaft 25 to the handle 2.
8 or by a motor (not shown), the guide pin 9B moves in the direction of the arrow C shown by the dotted line, thus making it possible to adjust the distance between the guide pins 9A and 9B. Even if the distances between the guide pins 9A and 9B are different, it is easy to align the guide pins 9A and 9B with the guide holes 30A and 30B of the printed circuit board 1. In this way, for example, as shown by the two-dot chain line in FIG.
The guide pins 9A and 9B can be fitted into the previous guide holes 9B. A pulse detector 27 consisting of a rotary encoder is provided at the end of the bearing 40 of the screw shaft 25, and this pulse detector 27 detects the amount of rotation of the screw shaft 25, that is,
The number of pulses corresponding to the amount of movement of the guide pin 9B is generated. The generated pulses are converted into drive command values for the feed motor 10 of the table 7 by performing calculations to be described later by a calculation device (not shown).

As shown in FIGS. 3 and 4, table 7
A reference pin unit is provided above in the feeding direction, and the reference pins 5A and 5B are attached to and removed from the multilayer printed circuit board 1 when the guide pins 9A and 9B reach the pin driving position. The reference pin supply unit 17 supplies the reference pins 5A and 5B to the reference pin unit 12. Plastic pin units 14 are provided on both sides of the reference pin unit 12 in a direction transverse to the feeding direction of the table 7 so as to be able to reciprocate laterally in the feeding direction of the table 7. This plastic pin unit 14 is attached with a drill unit 13 and a plastic pin cassette 15, and when it is necessary to drive the plastic pins 6 around the plastic substrate 1, the plastic pin unit 14 is first driven by the drill unit 13. A hole is made, and then a plastic pin 6 supplied from a plastic pin cassette 15 is driven into the printed circuit board 1.

The device for fixing and separating the multilayer printed circuit board 1 according to the present invention includes a control device, that is, a control panel 18, and by operating a button provided on the control panel 18, the screw shaft 8
, 25 to the operation of the reference pin unit 12, plastic pin unit 14, etc., and automatically controls the attachment and detachment of the reference pins of the multilayer printed circuit board 1.

Next, the operation of the device for fixing and separating multilayer printed circuit boards 1 according to the present invention will be explained. First, a multilayer printed circuit board 1 is prepared. A fixed guide pin 9A protruding from one guide hole 30A of this printed circuit board 1 into the table 7
Insert into. Next, the other guide pin 9B is moved to the position of the other guide hole 30B by rotating the screw shaft 25, and this guide pin 9B is fitted into the guide hole 30. At this time, the guide pin 9B has moved from its reference position, that is, the position where the dog 33 provided on the air cylinder 24 of the guide pin 9B is in contact with the limit switch 32, to the guide hole 30B. The distance L between the guide pins 9A and 9B is the distance L1 from the reference position of the movable guide pin 9B to the fixed guide pin 9A to the distance from the reference position of the movable guide pin 9B to the movement position, that is, the distance L1 from the reference position of the movable guide pin 9B to the movement position of the movable guide pin 9B. Amount L2
Calculated by subtracting . Movable guide pin 9B
The amount of movement is detected by the pulse detector as described above, and this detection signal is output to the control panel 18, that is, the arithmetic unit provided in the control device.

After setting the multilayer printed circuit board 1 on the table 7 in this manner, the control device moves the table 7, first attaches and detaches the reference pin 5A at the fixed pin 9A position, and then sets the calculated guide The table 7 is automatically moved by the distance L between the pins 9A and 9B, and the reference pin 5B of the printed circuit board 1 is attached and detached at the guide pin 9B position.

[0013]

According to the present invention, the reference pins of the multilayer printed circuit board can be attached and detached by simply aligning the multilayer printed circuit board with the guide pins retractably protruding from the table 7 and pressing the start button. Since separation can be performed, work can be performed accurately and productivity can be expected to improve. In addition, the conventional device's one-table, multi-pin unit structure can be reduced to one table and one-pin unit, resulting in a simpler structure. Therefore, there is an effect that manufacturing, maintenance, etc. can be made at low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the entire multilayer printed circuit board.

FIG. 2 is an explanatory diagram illustrating the order in which reference pins and plastic pins are provided on a multilayer printed circuit board.

FIG. 3 is a plan view of an embodiment of the multilayer printed board fixing and separating device according to the present invention.

FIG. 4 is a perspective view of FIG. 3;

FIG. 5 is a partial longitudinal sectional view of FIG. 3;

FIG. 6 is a partial cross-sectional view of FIG. 3;

[Explanation of symbols]

1 Multilayer printed circuit board 2 Upper board 3 Printed circuit board 4 Lower board 5A Reference pin 5B Reference pin 6 Plastic pin 7 Table 8 Feed screw shaft 9A Guide pin 9B Guide pin 10 Mome 11 Multilayer printed circuit board fixing or separation device 12
Reference pin unit 13 Drill unit 14 Plastic pin unit 15 Plastic pin cassette 17 Reference pin supply device 18 Control panel 20 Nut 21 Abutment 22 Slide 24 Air cylinder 25 Feed screw shaft 26 Nut 27 Pulse detector 28 Handle 29 Slide 30A Guide hole 30B Guide Hole 32 Limit switch 33 Dog

Claims (1)

[Claims] 1. A table having a printed circuit board mounting surface and guided on a base; and a table that protrudes retractably from the printed circuit board mounting surface and can be fitted into a guide hole of a multilayer printed circuit board, and the table has a A fixing and separating device for a multilayer printed circuit board, comprising at least two guide pins whose mutual spacing can be adjusted in the guiding direction, and a reference pin unit that allows reference pins of the multilayer printed circuit board to be attached and detached at each guide pin position, The distance between the guide pins is adjusted by the feed screw shaft, and the distance between the guide pins is calculated according to the pulse detected by the pulse detector based on the rotation of the feed screw shaft, and the result is output as a command value for the table feed amount. 1. A fixing and separating device for multilayer printed circuit boards, characterized in that it is equipped with a control device for controlling.