Detection device for printed circuit board

Abstract

The utility model belongs to the technical field of circuit board detection, and particularly discloses a printed circuit board detection device, which comprises a workbench and a conveyor belt, the conveyor belt is arranged between two sides in the workbench, servo motors are respectively arranged on two sides of the front end of the workbench, a circuit board is placed on the surface of the conveyor belt, and the circuit board is arranged on the surface of the conveyor belt. Four cylinders are mounted on the left side of the top end of the workbench, and a mounting plate is fixed between the tops of piston rods of the cylinders. According to the detection device for the printed circuit board, the two sides of the exterior of the transverse plate are sleeved with the clamping sleeves respectively, the transverse plate is moved back and forth along the sliding ways on the two sides, the first bolts are screwed into the corresponding screw holes for fixation, then the clamping sleeves are shifted left and right along the surface of the transverse plate, and under the linkage effect between the tooth grooves and the gears, the clamping sleeves are prevented from being clamped; and the bolt II is screwed into the hole and the positioning hole from the rear, so that the clamping sleeve is prevented from shaking to influence the voltage pen, and the problem that the detection position is inconvenient to adjust is solved.

Description

Technical Field

[0001] This utility model relates to the field of circuit board testing technology, specifically a testing device for printed circuit boards. Background Technology

[0002] Printed circuit boards, also known as PCBs, ceramic circuit boards, or high-frequency boards, have a high surface wiring density and can integrate multiple circuit systems. Although the board is thin, it has strong bending resistance and is often used in communication, medical, and industrial manufacturing equipment to control the operation of different mechanisms and facilitate the coordinated work of the equipment's mechanisms.

[0003] To ensure the integrity of the printed circuit board's functions, it needs to pass pre-testing before being packaged and shipped. Workers need to use a circuit tester in the testing device to check the current and voltage at the solder points on the surface of the printed circuit board. This is time-consuming, and the manual method is prone to errors, making it impossible to adjust or test the circuit board in a timely manner.

[0004] Now, a novel printed circuit board testing device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a testing device for printed circuit boards to solve the problem of inconvenient adjustment of the testing position mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a printed circuit board testing device, comprising a workbench and a conveyor belt. The conveyor belt is installed between the two sides inside the workbench. Servo motors are respectively installed on both sides of the front end of the workbench. Circuit boards are placed on the surface of the conveyor belt. Four sets of cylinders are installed on the left side of the top of the workbench, and mounting plates are fixed between the tops of the cylinder piston rods. A voltage detector is installed at the center of the front of the top of the mounting plate, and wires are fixed on both sides of the voltage detector. The two sides inside the mounting plate... Each slide is provided with a slide rail, and a horizontal plate is inserted between the slide rails. A through groove is provided between the two sides inside the horizontal plate. A retaining sleeve is fitted on each of the two sides outside the horizontal plate, and a hole is provided at the rear of the retaining sleeve. A bolt is installed in the hole. Gears are installed at the front and rear ends inside the retaining sleeve. Toothed grooves are provided at the front and rear ends of the surface of the horizontal plate. A circular groove is provided at the center of the inside of the retaining sleeve. A positioning hole is provided between the two sides at the rear of the horizontal plate. A screw hole is provided between the front and rear ends of the two sides at the top of the mounting plate, and a bolt is installed in the screw hole.

[0007] As a further technical solution of this utility model, the front end of the second bolt can be embedded in the positioning hole, and the wire is embedded in the circular groove.

[0008] As a further technical solution of this utility model, the sleeve can move back and forth along the slide rails on both sides, and the sleeve can slide left and right along the outer wall of the horizontal plate.

[0009] As a further technical solution of this utility model, the gear meshes inside the tooth groove, and the power supply line passes through the through groove.

[0010] As a further technical solution of this utility model, a bracket is welded to the bottom of the card sleeve, and a collar is fixed to the front end of the bracket. A voltage pen is movably connected to the inner side of the collar, and a lever is fixed above the front end of the voltage pen. A bolt is installed in the groove inside the lever, and holes are provided around the front surface of the bracket.

[0011] As a further technical solution of this utility model, a cavity is provided on the upper part of the left side of the workbench, and a slide groove is provided below the cavity. A threaded cylinder is movably connected to the inner side of the slide groove, and a crossbar is assembled in the threaded cylinder. An external thread is provided on the rear side of the surface of the crossbar. A drive motor is installed at the rear of the slide groove. A support rod is welded to the front end of the top of the crossbar. A push plate is fixed between the rear of the support rod. A vertical plate is fixed on the left side of the rear of the top of the workbench, and a support block is horizontally fixed to the front end of the vertical plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the printed circuit board detection device not only realizes the precise adjustment of the detection position and the adjustment of the detection angle, but also realizes the regularization of the circuit board position;

[0013] (1) By attaching sleeves to both sides of the outside of the horizontal plate, move the horizontal plate back and forth along the slides on both sides, screw in the bolt one in the corresponding screw hole to fix it, and then move the sleeve left and right along the surface of the horizontal plate. Under the linkage between the tooth groove and the gear, the sleeve is prevented from jamming. Then screw the bolt two into the hole and the positioning hole from the rear to prevent the sleeve from shaking. Change the position of the two sets of voltage pens in multiple aspects in front, back, left and right.

[0014] (2) A voltage pen is movably connected to the inside of the collar. The voltage pen is connected to the voltage detector via a wire. During the movement of the ferrule, the bracket below also slides. The dial is pre-rotated, and bolts are screwed into the hole on the outside of the collar for fixation. The voltage pen connected to the dial is also adjusted in angle to facilitate voltage detection on the circuit board on the conveyor belt surface when the cylinder lifts the mounting plate, thus expanding the detection range of the voltage pen.

[0015] (3) By fixing a push plate between the back of the support rod, when the circuit board moves to the bottom of the mounting plate under the transmission action of the conveyor belt, the drive motor is started and the threaded cylinder is rotated. Under the constraint of the cavity, the support rod connecting the push plate moves back and forth. In conjunction with the support block fixed by the rear vertical plate, the position of the circuit board is regulated to prevent it from leaving the bottom of the mounting plate, which would lead to test failure. The test position can also be adjusted according to the specifications of the circuit board. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the present invention.

[0017] Figure 2 This is a top view cross-sectional structural diagram of the mounting plate of this utility model;

[0018] Figure 3 For the present utility model Figure 2 Enlarged cross-sectional view of a portion of point A in the middle section;

[0019] Figure 4 This is a front view schematic diagram of the voltage pen of this utility model;

[0020] Figure 5 This is a side view sectional structural diagram of the workbench of this utility model.

[0021] In the diagram: 1. Workbench; 2. Servo motor; 3. Conveyor belt; 4. Circuit board; 5. Cylinder; 6. Mounting plate; 7. Bolt 1; 8. Sleeve; 9. Bracket; 10. Push plate; 11. Cavity; 12. Slide groove; 13. Support rod; 14. Voltage detector; 15. Wire; 16. Horizontal plate; 17. Screw hole; 18. Circular groove; 19. Positioning hole; 20. Bolt 2; 21. Through groove; 22. Slide rail; 23. Gear; 24. Hole; 25. Gear groove; 26. Bolt 3; 27. Hole; 28. Collar; 29. ​​Voltage pen; 30. Toggle block; 31. Drive motor; 32. Vertical plate; 33. Support block; 34. Threaded cylinder; 35. Horizontal bar; 36. External thread. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5This utility model provides an embodiment of a printed circuit board testing device, comprising a workbench 1 and a conveyor belt 3. The conveyor belt 3 is installed between the two sides inside the workbench 1. Servo motors 2 are respectively installed on the two sides of the front end of the workbench 1. Circuit boards 4 are placed on the surface of the conveyor belt 3. Four sets of cylinders 5 are installed on the left side of the top of the workbench 1, and a mounting plate 6 is fixed between the tops of the piston rods of the cylinders 5. A voltage detector 14 is installed at the center of the front of the top of the mounting plate 6, and wires 15 are respectively fixed on both sides of the voltage detector 14. Slides 22 are respectively provided on both sides inside the mounting plate 6. A horizontal plate 16 is inserted between the channels 22. A through groove 21 is provided between the two sides inside the horizontal plate 16. A sleeve 8 is respectively fitted on the two sides outside the horizontal plate 16. A hole 24 is provided behind the sleeve 8. A bolt 20 is installed in the hole 24. Gears 23 are respectively installed at the front and rear ends inside the sleeve 8. Tooth grooves 25 are respectively provided at the front and rear ends of the surface of the horizontal plate 16. A circular groove 18 is provided at the center of the sleeve 8. A positioning hole 19 is provided between the two sides behind the horizontal plate 16. A screw hole 17 is provided between the front and rear ends of the top sides of the mounting plate 6. A bolt 7 is installed in the screw hole 17.

[0024] The front end of bolt 20 can be embedded in positioning hole 19, wire 15 is embedded in round groove 18, sleeve 8 can move back and forth along slide rails 22 on both sides, sleeve 8 can slide left and right along the outer wall of cross plate 16, gear 23 is meshed and connected inside tooth groove 25, and power supply wire 15 passes through through groove 21.

[0025] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, move the horizontal plate 16 back and forth along the slide rails 22 on both sides, screw the bolt 7 into the corresponding screw hole 17 to fix it, and then move the sleeve 8 left and right along the surface of the horizontal plate 16. Under the linkage between the tooth groove 25 and the gear 23, the sleeve 8 is prevented from getting stuck. Then, screw the bolt 20 into the hole 24 and the positioning hole 19 from the rear to prevent the sleeve 8 from shaking.

[0026] A bracket 9 is welded to the bottom of the sleeve 8, and a collar 28 is fixed to the front end of the bracket 9. A voltage pen 29 is movably connected to the inside of the collar 28, and a lever 30 is fixed above the front end of the voltage pen 29. A bolt 26 is installed in the slot inside the lever 30, and holes 27 are provided around the front surface of the bracket 9.

[0027] Specifically, such as Figure 1 and Figure 4As shown, the voltage pen 29 is connected to the voltage detector 14 via the wire 15. During the movement of the sleeve 8, the bracket 9 below also slides. The dial 30 is pre-rotated, and the bolt 26 is screwed into the hole 27 on the outside of the collar 28 for fixation. The voltage pen 29 connected to the dial 30 also adjusts its angle accordingly, so as to facilitate voltage detection on the circuit board 4 on the surface of the conveyor belt 3 when the cylinder 5 lifts and lowers the mounting plate 6.

[0028] A cavity 11 is provided on the upper part of the left side of the workbench 1, and a slide groove 12 is provided below the cavity 11. A threaded cylinder 34 is movably connected to the inner side of the slide groove 12, and a crossbar 35 is assembled in the threaded cylinder 34. An external thread 36 is provided on the rear side of the surface of the crossbar 35. A drive motor 31 is installed at the rear of the slide groove 12. A support rod 13 is welded to the front end of the top of the crossbar 35. A push plate 10 is fixed between the rear of the support rod 13. A vertical plate 32 is fixed on the left side of the rear of the top of the workbench 1, and a support block 33 is horizontally fixed to the front end of the vertical plate 32.

[0029] Specifically, such as Figure 1 and Figure 5 As shown, when the circuit board 4 moves to the bottom of the mounting plate 6 under the transmission action of the conveyor belt 3, the drive motor 31 starts and rotates the threaded cylinder 34. Under the constraint of the cavity 11, the support rod 13 of the connecting push plate 10 moves back and forth. Together with the support block 33 fixed by the rear vertical plate 32, the position of the circuit board 4 is regulated to prevent it from leaving the bottom of the mounting plate 6, which would cause the test to fail.

[0030] Working principle: When this utility model is in use, when the circuit board 4 is moved to the bottom of the mounting plate 6 by the conveyor belt 3, the drive motor 31 is started and the threaded cylinder 34 is rotated. Under the constraint of the cavity 11, the support rod 13 of the connecting push plate 10 moves back and forth. With the cooperation of the support block 33 fixed by the rear vertical plate 32, the position of the circuit board 4 is regulated to prevent it from leaving the bottom of the mounting plate 6. Then, the horizontal plate 16 is moved back and forth along the slide rails 22 on both sides, and the bolts 7 are screwed into the corresponding screw holes 17 for fixation. Then, the retaining sleeve 8 is moved left and right along the surface of the horizontal plate 16. Under the linkage between the tooth groove 25 and the gear 23, the ferrule 8 is prevented from jamming. Then, the bolt 20 is screwed into the hole 24 and the positioning hole 19 from the rear to prevent the ferrule 8 from shaking. The positions of the two sets of voltage pens 29 are changed in multiple directions, front, back, left and right. The voltage pens 29 are connected to the voltage detector 14 through the wire 15. During the movement of the ferrule 8, the bracket 9 below also slides. The dial 30 is pre-rotated, and the bolt 26 is screwed into the hole 27 on the outside of the collar 28 for fixation. The voltage pens 29 connected to the dial 30 also adjust their angle accordingly.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An apparatus for inspecting printed circuit boards, comprising a worktable (1) and a conveyor belt (3), characterized in that: The workbench (1) inside the two sides between the installation of the conveyor belt (3), the workbench (1) front end of the two sides are respectively installed servo motor (2), the surface of the conveyor belt (3) placed circuit board (4), the workbench (1) top left side of four sets of air cylinder (5), and the cylinder (5) piston rod between the top of the fixed mounting plate (6), the mounting plate (6) top center of the front installation of voltage detector (14), and both sides of the voltage detector (14) are respectively fixed with wire (15), the mounting plate (6) inside the two sides are respectively provided with slide (22), and the slide (22) between the transverse joint plate (16) are provided with through slot (21), the outside of the two sides of the plate (16) are respectively sleeved with the sleeve (8), and the rear of the sleeve (8) is provided with hole (24), the hole (24) is equipped with bolt two (20), the inside of the sleeve (8) is respectively equipped with gear (23), the front end and the rear end of the surface of the plate (16) are respectively provided with the gear slot (25), the inside center of the sleeve (8) is provided with round groove (18), the two sides between the rear of the plate (16) are provided with positioning hole (19), the front and back between the two sides of the top of the mounting plate (6) are respectively provided with screw hole (17), and the screw hole (17) is equipped with bolt one (7).

2. The printed circuit board inspection apparatus of claim 1, wherein: The front end of the bolt two (20) can be embedded in the positioning hole (19), and the wire (15) is embedded in the round groove (18).

3. The printed circuit board inspection apparatus of claim 1, wherein: The sleeve (8) can move back and forth along the slide (22) on both sides, and the sleeve (8) can slide left and right along the outer wall of the plate (16).

4. The printed circuit board inspection apparatus of claim 1, wherein: The gear (23) is engaged in the inside of the gear slot (25), and the through slot (21) is for the wire (15) to pass through.

5. The printed circuit board inspection apparatus of claim 1, wherein: The sleeve (8) is welded with a support (9) below, and the front end of the support (9) is fixed with a sleeve ring (28), the inside of the sleeve ring (28) is movably connected with a voltage pen (29), and the front end of the voltage pen (29) is fixed with a dial block (30) above, the dial block (30) is equipped with a bolt three (26) in the hole slot inside, and the front surface of the support (9) is provided with a hole eye (27).

6. The printed circuit board inspection apparatus of claim 1, wherein: The top of the left side inside the workbench (1) is provided with a cavity (11), and the bottom of the cavity (11) is provided with a sliding groove (12), the inside of the sliding groove (12) is movably connected with a threaded cylinder (34), and the threaded cylinder (34) is equipped with a cross bar (35), the rear of the surface of the cross bar (35) is provided with an external thread (36), the rear of the sliding groove (12) is provided with a driving motor (31), the top of the cross bar (35) is welded with a support rod (13) in front, the rear of the support rod (13) is fixed with a push plate (10), the left side of the top of the workbench (1) is fixed with a vertical plate (32), and the front end of the vertical plate (32) is transversely fixed with a support block (33).

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