KR20000012317U - Pressing plate fixture opening and closing device of jig for inspection of printed circuit board assembly - Google Patents

Abstract

The present invention relates to a pressurizing plate fastener opening and closing device of a jig for testing a printed circuit board, in particular, the fixture 5, in which the pressing plate 7 is installed, as the support plate 51, the support piece 52 and the movable plate 53. Pneumatic cylinder 8 is installed between the movable plate 53, the hinge piece 534 and the hinge piece 25 of the lid 2 to be rotated back and forth, so that the pressing plate fixture itself is raised and lowered only the movable plate. By opening and closing within a certain angle, the overall size of the jig can be reduced, including the overall height of the jig, which can reduce the production cost of the product and make use of the space in the workplace, especially for printed circuit board assemblies. The workability is very good when inspecting for improving the inspection efficiency.

Description

Pressing plate fixture opening and closing device of jig for inspection of printed circuit board assembly

The present invention relates to a pressurizing plate opening and closing device of a jig for testing a printed circuit board assembly, and more particularly, after inserting various electronic components on a printed circuit board (PCB) having a pattern for a predetermined circuit, soldering and cutting operations. It is possible to reduce the production cost of the jig by greatly reducing the volume of the manual jig used when inspecting whether the single-sided printed circuit board assembly is operating normally or in a bad state. It is designed to be.

In general, check the pattern part on the coated printed circuit to check the pattern disconnection and short circuit of the coated printed circuit board or to check the connection status between each component installed on the surface mounted printed circuit board installed in the electric and electronic devices. Check the electronic components on the printed circuit board one by one, or check the performance of the printed circuit board assembly itself after the soldering and cutting work is completed with various electronic components inserted. .

In this case, the printed circuit board includes a pin board having several terminals electrically connected to respective terminals of the inspection apparatus, and includes a plurality of pressure-bearing rods, and presses the upper surface of the printed circuit board to press the printed circuit boards. It is detachably mounted on a jig (called a printed circuit board check fixture) having a pressing plate or the like for making good contact with the pantones of the substrate.

There are two types of jigs, pneumatic and manual.

However, in the above-described pneumatic jig, there is a risk of industrial safety accidents due to malfunction of the pneumatic cylinder or operator's mistake, and in case of incorrectly designing the height of the pressure plate, excessive pressure causes damage to the printed circuit board as well as the pressure plate itself. In addition, there is a concern that a poor contact may occur between the terminals of the pin board and the patterns of the printed circuit board. In particular, a large number of components and a large volume may cause a high product price and no mobility.

In addition, in the case of the manual jig most of the domestic utility model publication No. 96-4360, the pressing plate that presses the printed circuit board is adopted as the lifting and lowering like a press, in such a manual jig is the above-mentioned lifting type pressing plate It has the shape of this plate body, and is comprised by the upper end part of a shaft fixed horizontally with respect to a main body.

Therefore, the printed circuit board assembly, which has been soldered and cut in the state where various electronic components are inserted, is inserted between the pressing plate of the jig and the bottom plate of the jig main body where the pin board is installed, and then the pressing plate is removed. Only when the space between the pin board is relatively large, the printed circuit board assembly can be smoothly moved in and out, and thus, the distance of the pressing plate can be increased.

That is, in the conventional manual jig, the pressing plate method has the shape of the plate body and is fixed horizontally with respect to the main body at the upper end of the shaft, so that the space between the pressing plate and the pinboard is relatively wide, so that the overall height of the jig itself is high. In addition, the volume is very large, occupies a lot of installation space, there is no workability during the inspection, in particular, there was a problem that the production cost of the jig takes much.

Therefore, recently, the pressing plate is opened and closed by a door type and the pin board plate is lifted and lowered. In this case, the pressing plate is opened and closed by the inspector by directly operating the locking member with one hand and the pin board by pulling the lever with the other hand. In order to lift or lower in a manner of pushing or pushing, there is a problem that inspection work for a predetermined printed circuit board is very cumbersome and difficult, as well as a lot of inspection time.

The purpose of the present invention is to devise to solve the above problems, by forming the pressing plate fixture itself by lifting and lowering the door can be reduced the overall height and size of the jig, as well as to improve the workability of the product The present invention provides a pressurizing plate opening and closing device for a jig for testing an PCB assembly that can reduce production costs.

An object of the present invention described above, the inner body and the like body is provided with various parts; A lid body provided to be opened and closed at an upper opening of the main body; A pin board detachably installed on the lid; A pair of shafts installed to be movable in a vertical direction in the guide rod of the lid; A fixture for transferring the operating pressure of the pneumatic cylinder to the pressing plate; A pair of coil springs fitted on the shaft to generate a return pressure on the fixture; A pressing plate detachably mounted on the fixture to press the upper surface of the printed circuit board so that the patterns of the printed circuit board are in contact with the terminals of the pin board; In the printed circuit board assembly inspection jig composed of a pneumatic cylinder to raise or lower the fixture in response to the direction of the air pressure is provided between the main body and the fixture, the fixture is a support plate, a backing plate and a movable plate And a hinge piece for axially holding the body of the pneumatic cylinder on the rear bottom of the lid can be achieved by allowing the pneumatic cylinder to open and close the movable plate of the fixture in the same shape as the lid.

Therefore, the pressing plate fixture itself is opened and closed within a certain angle as it is raised and lowered, thereby reducing the overall height and size of the jig, thereby reducing the production cost of the product and improving workability when inspecting printed circuit board assemblies. It can be done.

1 is a partially exploded perspective view of the jig of the present invention.

Figure 2 and Figure 2 is a side cross-sectional view of the cut portion showing an operating state of the present invention.

* Explanation of symbols for main parts of the drawings

1: enclosure type body 2: lid body

3: pinboard 4: shaft

5: fixture 6: coil spring

7: pressure plate 8: pneumatic cylinder

9: printed circuit board 25,533: hinge fun

51: support plate 52: support piece

53: movable plate 511: "ㄷ" shaped groove

521: hinge protrusion 522: locking groove

531: limiting rotation 532: pressing plate settle groove

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a partial exploded perspective view of the jig of the present invention, Figure 2 and Figure 2 shows a partial cross-sectional side view showing the operating state of the present invention.

According to this, the left and right sides and the upper surface has a shape that is open, the pneumatic cylinder drive switch 11 is installed in the front portion, the inner body including a housing-like body (1) where various components are installed;

A pin board mounting hole 21 is formed in the front part, and a pneumatic cylinder through hole 22 is formed in the rear center part, and a pair of guide rods 23 and a lower limiting bar are formed on both bottom surfaces of the pneumatic cylinder through hole 22. A lid body 2 having a configuration in which 24 is installed and installed in an upper opening of the main body 1 so as to be opened and closed;

Positioning of several supporting rods 32 for supporting the edges of the printed circuit board 6 and several terminals 31 electrically contacting a predetermined pattern of the printed circuit board 6 to be inspected. A pin board (3) having a spring bar (33) for the purpose and detachably installed on the pin board mounting hole (21) of the lid (2);

A pair of shafts 4 having a predetermined length and installed to be movable in the vertical direction in the guide rods 23;

A fastener (5) fixedly installed at an upper end of the shaft (4) to transmit an operating pressure of the pneumatic cylinder (8) to the pressing plate (7);

A pair of coil springs 6 fitted on the shaft 4 for generating a return pressure on the fixture 5;

The printed circuit board includes a plurality of push rods 71 and is detachably installed on the fixture 5 so that the patterns of the printed circuit board 6 may be in contact with the terminals 31 of the pin board 3. A pressing plate 7 for pressing the upper surface of 6);

In the printed circuit board assembly inspection jig composed of a pneumatic cylinder (8) to raise or lower the fixture (5) in response to the direction of the air pressure is provided between the main body (1) and the fixture (5) ,

The fastener 5 has a c-shaped groove 511 into which the rotation restriction piece 531 protruding from the rear portion of the movable plate 53 can be fitted, and is fixed in the horizontal direction at the upper end of the shaft 4. Support plate 51 which is; A hinge groove 521 for moving plate shafts is formed in the front portion, and a locking groove supporting the upper surface of the rotation limiting piece 531 of the movable plate 53 fitted into the c-shaped groove 511 of the support plate 51 at the bottom thereof. A support piece 52 provided with an upper portion of the support plate 51 and limiting rotation of the movable plate 53; In the front part, a pressing plate settling groove 532 is formed, and in the rear part, a hinge piece 533 and a rotation limiting piece 531 which are axially held by the hinge protrusion 521 of the supporting piece 52 are formed in succession. Between the 532 and the hinge piece 533, the hinge piece 534 for holding the movable lever 81 of the pneumatic cylinder 8 protrudes upward and is supported by the upper portion of the support plate 51. Consists of a movable plate 53 installed on the hinge protrusion 521 of the piece 52 so as to be able to rotate only upwards,

The rear plate of the lid 2 is provided with a hinge piece 25 for rotatably holding the body of the pneumatic cylinder 8 so that the movable plate 53 of the fixture 5 when the pneumatic cylinder 8 is operated. It is characterized in that the movable plate 53 can be rotated within a predetermined angle while rotating back and forth between the hinge piece 534 and the hinge piece 25 of the lid 2.

Here, reference numeral 26 is a clamp for preventing the opening and closing of the lid body, 27 is a folding support bar to maintain the state when the lid body is opened, 82 is a state rotatably supported on the hinge piece of the movable plate Is a coupler that is screwed into the movable lever of the pneumatic cylinder.

Referring to the operation state of the jig of the present invention configured as described above are as follows.

First, the technical spirit of the present invention is fixed to the upper end of the shaft 4, the support plate (5) and the support piece (52) for transmitting the operating pressure of the pneumatic cylinder (8) to the pressing plate (7) And the support plate 51 and the supporting piece 52 and the movable plate 53 when the fixture 5 itself is lifted up and down along the shaft 4 by a pneumatic cylinder 8 within a predetermined distance. The plate 53 maintains the shape of the plate body, and after the completion of the lifting and lowering, the movable plate 53 is opened or closed in a predetermined angle range upwardly like a door, or lowered and closed from the position to raise the fixture 5 itself. Even if it does not elevate, it is possible to secure a large space between the printed circuit board 6 and the fixture 5 which is placed on the pin board (3).

To this end, the fastener 5 is provided on the support plate 51 which is directly fixed in the transverse direction at the upper end of the shaft 4, and is installed above the support plate 51 to limit the rotation of the movable plate 53 It consists of the movable plate 53 which can be rotated only upwards between the support piece 52 and the said support plate 51 and the support piece 52 to be made.

At this time, the front center of the support plate 51 forms a c-shaped groove 511 into which the rotation restriction piece 531 protruding from the rear portion of the movable plate 53 is formed, In the front part, a hinge plate 521 for movable plate shaft is formed, and at the bottom thereof, the upper surface of the rotation limiting piece 531 of the movable plate 53 fitted into the c-shaped groove 511 of the support plate 51 is supported. The main portion formed a locking groove 522, and the U-shaped pressing plate settle groove 532 is formed in the front portion of the movable plate 53, and in the rear portion thereof, a axial paper is formed in the hinge protrusion 521 of the support piece 52. The hinge piece 533 and the rotation limiting piece 531 are formed to protrude in succession, and the hinge piece for axially moving the movable lever 81 of the pneumatic cylinder 8 between the pressing plate set groove 532 and the hinge piece 533. 534 was installed to protrude upward.

In addition, a hinge piece 25 is installed at the rear bottom of the lid 2 so as to allow the body of the pneumatic cylinder 8 to be condensed.

Therefore, the movable lever 81 of the pneumatic cylinder 8 is axially hung on the hinge piece 534 of the movable plate 53 and the body part is hung on the hinge piece 25 of the lid body 2 as described above. The pneumatic cylinder (8) is able to pivot back and forth between the movable plate (53) hinge piece (534) of the fastener (5) and the hinge piece (25) of the lid (2), so that the support plate (51) and the support piece ( 52 and the movable plate 53, which was raised and lowered together, can be rotated and opened and closed within a predetermined angle range.

In addition, several supporting rods 32 and printed circuit boards supporting edges of the printed circuit board 6 and several terminals 31 electrically contacting a predetermined pattern of the printed circuit board 6 to be inspected. The pinboard 3 including the positioning spring bar 33 and the like is detachably fixed to the pinboard mounting hole 21 of the lid body 2 provided to be opened and closed in an upper opening of the main body 1. In addition, the pressing plate 7 provided with several pressing rods 71 is detachably fixed to the pressing plate settling groove 532 formed on the movable plate 53 of the fixture 5.

In addition, the pneumatic cylinder (8) when the compressed air flows into the inside due to the operation of the air intake control switch 11, the movable lever 81 is gradually protruded to the outside, and when the air is exhausted to the contrary gradually It will work to enter.

Therefore, when the inspection of the predetermined printed circuit board 6 is to be carried out, if the air intake control switch of the two switches 11 installed in the front part of the main body 1 is operated, the compressed air is supplied from the compressor. Since the movable lever 81 is extended to the maximum and the movable plate 53 of the fastener 5 is opened as shown in the solid line of FIG. 2, the pressing plate 7 of the pin board 3 and the fastener 5 installed on the lid 2 are fixed. Sufficient space is secured between them.

Thereafter, the printed circuit board 6 to be inspected through the space part is pushed and placed on the upper surface of the pin board 3, and the air exhaust control switch of the two switches 11 installed at the front part of the main body 1 is turned on. In operation, the movable lever 81 of the pneumatic cylinder 8 gradually enters the inside thereof, and the movable lever 81 of the pneumatic cylinder 8 is axially held by the end pieces of the movable lever 81 and the hinge pieces 534 and 533 of the support piece 52, respectively. The movable plate 53 closes slowly, and its bottom surface touches the upper surface of the support plate 51 as shown by the solid line of FIG. 3, and the upper surface of the rotation limiting piece 531 is caught by the ceiling of the locking groove 522 of the base 52. Since the rotation of the movable plate 53 is stopped on the spot, the movable lever 81 of the pneumatic cylinder 8 continues to enter the inside of the body. Pull force of the shaft (4) through the movable plate (53), the support plate (51), and the support piece (52). The shaft 4 is lowered in the supporting rod 32 under the elastic force of the return spring 6.

Therefore, the fastener 5 itself composed of the support plate 51, the support piece 52, and the movable plate 53 maintains a horizontal state and is lowered together with the shaft 4, thereby being fixed on the movable plate 53. Since the end portions of the pressing rods 71 of the pressing plate 7 installed are continuously lowered by a predetermined distance while pressing the upper surface of the printed circuit board 6 or the upper surface of the electronic component soldered thereto, the printed circuit board ( The predetermined patterns of 6) and the terminals 31 of the pin board 3 are kept in exact contact with each other.

At this time, the falling range of the fixture (5) was designed to be limited by the lower limit bar 24 installed in the rear portion of the lid 2, the height of the lower limit bar 24 is the printed circuit board The predetermined patterns of (6) were set such that the bottom surface of the support plate 51 of the fastener 5 had a height that could be obtained and caught on its upper surface when the terminals 31 of the pinboard 3 were exactly in contact with each other.

On the other hand, after completing the inspection process for the predetermined printed circuit board 6 in the above state, the air of the two switches 11 installed on the front of the main body 1 to take out the printed circuit board 6 When the suction control switch is operated, the movable lever 81 of the pneumatic cylinder 8 starts to come out by the compressed air supplied from the compressor. At this time, the shaft 4 is provided above the guide rod 23. The elastic force of the return spring 6 in the fitted state is exerted on the support plate 51 of the fastener 5, so that the fastener 5 composed of the support plate 51, the support piece 52, and the movable plate 53 is provided. ) Is raised and lowered with the shaft 4 while maintaining a horizontal state.

That is, the components constituting the fastener 5 are the lid body of the main body 1 until the shaft 4 installed in the state capable of moving up and down in the support rod 32 is maximally elevated. Ascending and descending in parallel with (2).

Of course, when the fastener 5 is elevated to the upper portion of the main body 1 as described above, the pressing pressure of the pressing plate 7 installed thereon is also lost, and at the same time, the pressing rods 71 are installed on the printed circuit board 6. ) And the electrical contact between the terminals 31 of the pinboard 3 and the patterns is automatically terminated.

As such, the fastener 5 which has been raised and lowered together with the shaft 4 by the lifting operation of the pneumatic cylinder 8 and the restoring force of the return spring 6 has a point in time at which the lifting of the shaft 4 is restricted (ie, When the lift limiting bolt 41 bolted to the lower end reaches a point at which the lower end of the supporting rod 32 is caught, the support plate 51 and the supporting piece 52 fixed directly on the shaft 4 are supported. Of the pneumatic cylinder (8) is still in the state of being elongated, so that the hinge piece (533) on the hinge protrusion (521) of the support piece (52) is axially held. The movable plate 53 is rotated and opened continuously, and stops when the movable lever 81 of the pneumatic cylinder 8 is extended.

At this time, the pneumatic cylinder 8 is not fixedly installed perpendicular to the main body 1, the upper end of the movable lever 81 is hung on the hinge piece 534 of the movable plate 53 and the lower end of the body portion is a lid body Since the movable plate 53 is opened, the entire pneumatic cylinder 8 is able to flow and rotate back and forth in the two hinge pieces 534 and 25 when the movable plate 53 is opened. The movable plate 53 may be rotated and opened at a predetermined angle on the hinge protrusion 521 of the base plate 52.

As described above, according to the present invention, since only the movable plate is opened and closed within a certain angle while the pressing plate fixture itself moves up and down, the size of the entire jig can be greatly reduced including the overall height of the jig, thereby reducing the production cost of the product. Of course, the work space can be usefully used, and especially when inspecting printed circuit board assemblies, the workability is very good and the inspection efficiency is very useful.

Claims (1)

An enclosure-type main body 1 having a shape in which a part of the left and right sides and the upper surface is open, and a pneumatic cylinder drive switch 11 is installed at the front part, and various parts are installed at its inner back; A pin board mounting hole 21 is formed in the front part, and a pneumatic cylinder through hole 22 is formed in the rear center part, and a pair of guide rods 23 and a lower limiting bar are formed on both bottom surfaces of the pneumatic cylinder through hole 22. A lid body 2 having a configuration in which 24 is installed and installed in an upper opening of the main body 1 so as to be opened and closed; Positioning of several supporting rods 32 for supporting the edges of the printed circuit board 6 and several terminals 31 electrically contacting a predetermined pattern of the printed circuit board 6 to be inspected. A pin board (3) having a spring bar (33) for the purpose and detachably installed on the pin board mounting hole (21) of the lid (2); A pair of shafts 4 having a predetermined length and installed to be movable in the vertical direction in the guide rods 23; A fastener (5) fixedly installed at an upper end of the shaft (4) to transmit an operating pressure of the pneumatic cylinder (8) to the pressing plate (7); A pair of coil springs 6 fitted on the shaft 4 for generating a return pressure on the fixture 5; The printed circuit board includes a plurality of push rods 71 and is detachably installed on the fixture 5 so that the patterns of the printed circuit board 6 may be in contact with the terminals 31 of the pin board 3. A pressing plate 7 for pressing the upper surface of 6); In the printed circuit board assembly inspection jig composed of a pneumatic cylinder (8) to raise or lower the fixture (5) in response to the direction of the air pressure is provided between the main body (1) and the fixture (5) , The fastener 5 has a c-shaped groove 511 into which the rotation restriction piece 531 protruding from the rear portion of the movable plate 53 can be fitted, and is fixed in the horizontal direction at the upper end of the shaft 4. Support plate 51 which is; A hinge groove 521 for moving plate shafts is formed in the front portion, and a locking groove supporting the upper surface of the rotation limiting piece 531 of the movable plate 53 fitted into the c-shaped groove 511 of the support plate 51 at the bottom thereof. A support piece 52 provided with an upper portion of the support plate 51 and limiting rotation of the movable plate 53; In the front part, a pressing plate settling groove 532 is formed, and in the rear part, a hinge piece 533 and a rotation limiting piece 531 which are axially held by the hinge protrusion 521 of the supporting piece 52 are formed in succession. Between the 532 and the hinge piece 533, the hinge piece 534 for holding the movable lever 81 of the pneumatic cylinder 8 protrudes upward and is supported by the upper portion of the support plate 51. Consists of a movable plate 53 installed on the hinge protrusion 521 of the piece 52 so as to be able to rotate only upwards, The rear plate of the lid 2 is provided with a hinge piece 25 for rotatably holding the body of the pneumatic cylinder 8 so that the movable plate 53 of the fixture 5 when the pneumatic cylinder 8 is operated. Printed circuit board assembly inspection, characterized in that the movable plate 53 can be rotated within a predetermined angle while rotating back and forth between the hinge piece 534 and the hinge piece 25 of the lid (2). Press plate fixture opening and closing device for jig.