JP3072493B2 - Fixing and separating equipment for multilayer printed circuit boards - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for fixing and separating printed circuit boards stacked in multiple layers, and more particularly to a method of fixing multilayer printed circuit boards to each other by reference pins and connecting the reference pins of the multilayer printed circuit board to each other by the reference pins. The present invention relates to a device for removing printed circuit boards from each other.

[0002]

2. Description of the Related Art In a conventional apparatus of this kind, a stacked multilayer printed circuit board is fitted to guide pins of a fixed table, and reference pin units are moved to respective guide pin positions to be installed and removed. Had been implemented. In this known device, since the table is fixed, it is necessary to manually install the reference pin units at the respective guide pin positions.
If the operation and maintenance are not easy, and the spacing between the guide holes is different depending on the size or type of the printed circuit board, select a table where the spacing between the guide pins is fixed corresponding to the spacing between the guide holes. In some cases, the work becomes very complicated, such as the necessity, and the processing cost may increase.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus which eliminates the above-mentioned drawbacks of the prior art and which makes it possible to automate the fixing or separation of a multilayer printed circuit board by reference pins. .

[0004]

According to the invention, the object of the invention is to depart from the prior art and to make it possible for the table to be guided on an abutment and for the spacing between guide pins to be retractably projecting on the table mounting surface. Is adjusted, and the table is moved in accordance with the interval. The interval is adjusted by the feed screw shaft, and the table feed amount is calculated according to the detection pulse of the pulse detector attached to the feed screw shaft. The problem is solved by providing a control device that outputs the command value as a command value.

[0005]

In the apparatus for fixing and separating a multi-layer printed circuit board according to the present invention, the distance between the guide pins can be adjusted first so that the printed circuit boards having different dimensions between the guide holes can be easily set on the table. Further, the distance between the guide pins can be easily adjusted by manual operation or push button operation by adjusting the feed screw shaft. Also, the control to calculate and output the command value based on the pulse corresponding to the adjustment distance between the guide pins. An accurate feed amount is determined by a simple arithmetic expression by the device, and the table can be sent corresponding to the feed amount.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to one embodiment shown in the drawings. FIG. 1 shows a multilayer printed board 1 fixed to each other by reference pins 5A and 5B. The multilayer printed board 1 has a configuration in which a plurality of printed boards 3 are sandwiched between an upper plate 2 and a lower plate 4. (See FIG. 2). The multi-layer printed circuit board 1 thus constructed is then subjected to a punching process, and then separated into a single printed circuit board 3 with reference pins removed. As shown in FIG. 2, the guide holes 30A and 30B of the multilayer printed circuit board 1 are fitted into guide pins 9A and 9B protruding from the mounting surface of the table 7 so as to be retractable (see the second from the left in FIG. 2). ).

In this case, the table 7 is guided on a slide 22 provided on an abutment 21 (see FIGS. 5 and 6) by rotating a screw shaft 8 screwed into a fixed nut 20 on the table 7 by a motor 10. Driven by the arrow 13 (see FIG. 5). FIG. 2 shows a state in which 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 a state of being driven around the substrate 1 and a state of being driven with another reference pin 5B to the right.

One guide pin 9A is a shaft pin protruding from the air cylinder 24 fixed to the table 7, and protrudes from the mounting surface of the printed circuit board 1 of the table 7 as shown by an arrow A so as to be retractable. The other guide pin 9B is a shaft pin protruding from the mounting surface of the multilayer printed circuit board 1 through a slit formed in the feed direction of the table 7 so as to be retractable, and this shaft pin is also an air cylinder 24 like the guide pin 9A. Shaft pin. The air cylinder 24 of the guide pin 9B is fixed to a nut 26. On the other hand, the nut 26 is a slide 2 provided on the lower surface of the table 7 along a slit.
The screw shaft 25 is screwed together with the screw shaft 9, and one end of the screw shaft is supported by a bearing provided on the lower surface of the table 7. By rotating the screw shaft 25 by the handle 28 or a motor (not shown) in this manner, the guide pin 9B moves in the direction of arrow C shown by the dotted line,
Therefore, since the distance between the guide pins 9A and 9B can be adjusted, even if the distance between the guide holes of the printed circuit board is different, the guide pins 9A and 9B can be aligned with the guide holes 30A and 30B of the printed circuit board 1. It will be easier. In this way, for example, as shown by a two-dot chain line in FIG.
The guide pins 9A and 9B can be adapted to the guide holes 9B up to B. At the end of the bearing 40 of the screw shaft 25, a pulse detector 27 composed of a rotary encoder is provided. The pulse detector 27 has a number of pulses corresponding to the rotation amount of the screw shaft 25, that is, the number of pulses corresponding to the movement amount of the guide pin 9B. Occurs. The generated pulse is converted into a drive command value for the feed motor 10 of the table 7 by performing a calculation described later by a calculation device (not shown).

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

The apparatus 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. By operating a button provided on the control panel 18, the rotation amount of the screw shafts 8 and 25 can be controlled. Until the operation of the reference pin unit 12 and the plastic pin unit 14, etc., automatic control of attachment / detachment of the reference pin of the multilayer printed circuit board 1 is performed.

Next, the operation of the apparatus for fixing and separating the multilayer printed circuit board 1 according to the present invention will be described. First, the multilayer printed circuit board 1 is prepared. A fixed guide pin 9A that projects one guide hole 30A of the printed board 1 into the table 7
Insert Next, the other guide pin 9B is moved to the position of the other guide hole 30B by rotating the screw shaft 25, and the 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 determined by the distance L1 from the reference position of the movable guide pin 9B to the fixed guide pin 9A, the distance from the reference position of the movable guide pin 9B to the movement position, that is, the movement of the movable guide pin 9B. Quantity L2
Is calculated by subtracting Movable guide pin 9B
Is detected by the pulse detector as described above, and this detection signal is output to the control panel 18, that is, an arithmetic unit provided in the control unit.

After setting the multilayer printed circuit board 1 on the table 7 in this way, the controller moves the table 7, firstly attaches and detaches the reference pin 5A at the position of the fixed pin 9A, and then calculates the calculated guide. The table 7 is automatically moved by the distance L between the pins 9A and 9B, and the reference pins 5B of the printed circuit board 1 are attached and detached at the positions of the guide pins 9B.

[0013]

According to the present invention, the multi-layer printed circuit board is aligned with the guide pins which can be pulled into the table 7 and the start button is simply pressed, so that the reference pins of the multi-layer printed circuit board can be detached, that is, fixed or fixed. Because separation can be performed,
The work can be carried out accurately, so that productivity can be expected to be improved.
Since the table and the one-pin unit can be used, the structure becomes simple, so that there is an effect that the production, maintenance and the like can be reduced.

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram illustrating an 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 an apparatus for fixing or separating a multilayer printed board according to the present invention.

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

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multilayer printed board 2 Upper board 3 Printed 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 Mom 11 Fixing or separating device of multilayer printed board 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

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-202000 (JP, A) JP-A-47-23864 (JP, A) JP-A-1-214438 (JP, A) JP-A-51- 42958 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) H05K 13/02

Claims (1)

(57) [Claims] 1. A table having a printed circuit board mounting surface and guided on an abutment, and a table which projects from the printed circuit board mounting surface so as to be retractable and can be fitted into a guide hole of a multilayer printed circuit board, and A fixed separation device for a multilayer printed board, comprising: at least two guide pins capable of adjusting a distance therebetween in a guiding direction; and a reference pin unit capable of detachably attaching a reference pin of the multilayer printed board at each guide pin position. The distance between the guide pins is adjusted by the feed screw shaft, and the rotation of the feed screw shaft is calculated by calculating the distance between the guide pins according to the pulse detected by the pulse detector and output as a command value of the table feed amount. A fixed separation device for a multilayer printed circuit board, comprising: