Line detection device for multi-layer PCB (Printed Circuit Board)

Abstract

The utility model relates to the technical field of PCB circuit board line detection, in particular to a multilayer PCB circuit board line detection device which comprises a line detection device body, an electric guide rail is fixedly arranged on the upper side of the line detection device body, an electric sliding block is installed on one side of the electric guide rail, and the upper side of the electric sliding block is connected with a second electric push rod. According to the utility model, the positions of the test needles can be flexibly adjusted by using the threaded support plate and the sliding seat, and then the two universal gooseneck pipes can be used for driving the two test needles to be randomly bent and adjusted, so that the detection angles of the two test needles can be flexibly adjusted; the whole circuit detection device can adaptively detect multi-layer PCBs of different sizes, circuit access detection is facilitated, the applicability of the circuit detection device is improved, the detection efficiency is high, and the two groups of elastic positioning rods can be used for positioning the tool clamping plate, so that the multi-layer PCBs can be stably positioned.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB circuit board line detection, in particular to a multi-layer PCB circuit board line detection device. Background Art

[0002] Circuit board electrical testing is one of the important links in the manufacturing process. By testing the electrical performance parameters on the circuit board, the performance and quality of the circuit board can be detected. The circuit board is an indispensable basic component, and its quality and performance directly affect the stability and reliability of the entire electronic product.

[0003] The prior art discloses patent application number "CN201820786292.X", a circuit detection device for a PCB board, including a base and conductive glue, a loading platform arranged on the base, and a pressure plate arranged on the base. When it is necessary to perform an open circuit test on all components on the solder pads of the PCB board as a whole, the cylinder pushes the mounting plate up, so that the conductive glue contacts the solder pads on the PCB board, so that all components on the solder pads are in a conductive state, and then the overall routing of the circuit board is tested for open circuit, thereby improving the detection accuracy.

[0004] This circuit detection device can only improve the detection accuracy. In actual use, the circuit detection device as described above can usually only perform circuit path detection on a certain position on the PCB circuit board, making it impossible to flexibly adjust the detection position. This requires repeated adjustment of the position of the multi-layer PCB circuit board, resulting in poor applicability of the circuit detection device, thereby affecting the working efficiency of the circuit detection device during use and making it inconvenient to use. Utility Model Content

[0005] The purpose of the present invention is to provide a multi-layer PCB circuit board circuit detection device to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A multi-layer PCB circuit detection device includes a circuit detection device body, an electric guide rail fixedly provided on the upper side of the circuit detection device body, an electric slider installed on one side of the electric guide rail, a second electric push rod connected to the upper side of the electric slider, a mounting frame fixedly connected to the upper side of the second electric push rod, and a threaded shaft rotatably connected to the inner side surface of the mounting frame;

[0008] The outer surface of the threaded shaft is threadedly connected to a connecting block, a circuit board detector is fixed on the lower side of the connecting block, a U-shaped side plate is installed on the front side of the connecting block, the inner side of the U-shaped side plate is rotatably connected to a double-headed threaded rotating rod, the outer surface of the double-headed threaded rotating rod is threadedly connected to two threaded support plates, the lower sides of the two threaded support plates are connected to a base plate, smooth rods are installed inside the two base plates, the outer surfaces of the two smooth rods are slidably connected to a slide seat, and the lower sides of the two slide seats are connected to a universal gooseneck tube.

[0009] Preferably, two test needles are connected to the lower side of the circuit board tester, and both ends of the double-threaded rotating rod pass through the U-shaped side plate and extend to the two ends of the U-shaped side plate. Handwheels are fixedly installed at both ends of the double-threaded rotating rod. Two round rods are fixedly connected to the inner side of the U-shaped side plate. The outer surfaces of the two round rods are slidably connected to the inside of the threaded support plate. One side of the two slides is threadedly connected with a first bolt for fixing the test needle, and the test needle is located inside the slide and the universal gooseneck tube.

[0010] Preferably, a first electric push rod is fixedly installed on the upper side of the line detection device body, a top plate is fixedly provided on the upper side of the first electric push rod, a tooling card is clamped on the upper side of the top plate, the internal array of the tooling card is connected to a cross plate, an array-distributed rubber pad is installed inside the cross plate, a multi-layer PCB circuit board body is fixed on the upper side of the rubber pad, two symmetrically arranged flip plates are rotatably connected to the inside of the top plate, and positioning rods for fixing the tooling card are provided on the lower sides of the two flip plates for sliding in an array, the upper side of the positioning rod passes through the flip plate and extends to the upper side of the flip plate, and a connecting spring is fixedly connected between the positioning rod and the flip plate.

[0011] Preferably, two symmetrically arranged connecting handles are connected to the upper side of the tooling card, four vertical rods are fixedly installed on the upper side of the line detection device body, and four L-shaped slides are fixedly connected to the lower side of the top plate. The outer surface of the vertical rod is slidably connected to the inner part of the L-shaped slide, and the upper sides of the four vertical rods are threadedly connected to threaded seats.

[0012] Preferably, the rear side of the threaded shaft passes through the mounting frame and extends to the rear side of the mounting frame. The rear side of the threaded shaft is fixedly connected to the servo motor through the motor mounting plate. The inner side of the mounting frame is fixedly connected to two connecting rods. The outer surfaces of the two connecting rods are slidably connected to the inside of the connecting block. The lower sides of the two slides are threadedly connected with second bolts for fixing the slides.

[0013] Preferably, an array of positioning grooves is provided on the upper side of the tooling card plate, the positioning grooves are adapted to the positioning rods, and the lower side of the positioning rods is connected to the upper side of the tooling card plate through the positioning grooves.

[0014] Beneficial effects of the utility model:

[0015] 1. The present invention can flexibly adjust the position of the test needle by using a threaded support plate and a slide. Then, two universal goosenecks can be used to drive the two test needles to bend and adjust at will, so as to flexibly adjust the detection angle of the two test needles. This allows the entire circuit detection device to adapt to the detection of multi-layer PCB circuit boards of different sizes, facilitates circuit path detection, improves the applicability of the circuit detection device, and improves detection efficiency.

[0016] 2. The utility model allows two sets of elastic positioning rods to be used to position the tooling pallet, so as to firmly position the multi-layer PCB circuit board on the tooling pallet. Then, the electric slider and the connecting block are moved and adjusted to move the circuit board tester, so that the test needle can batch test the multi-layer PCB circuit boards, thereby improving the detection efficiency of the multi-layer PCB circuit test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, it is possible for a person skilled in the art to derive other drawings based on these drawings without inventive effort.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This utility model Figure 1 Installation diagram of the double-threaded rotating rod and threaded support plate;

[0020] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This utility model Figure 1 Installation diagram of placing top plate and tooling pallet;

[0022] Figure 5 This utility model Figure 1 Schematic diagram of the structure of the middle tooling pallet and cross plate;

[0023] Figure 6 This utility model Figure 5 Enlarged view of point B in the middle;

[0024] The reference numerals in the figures are as follows:

[0025] 1. Line detection device body; 2. First electric push rod; 3. Place top plate; 4. Electric guide rail; 5. Electric slider; 6. Second electric push rod; 7. Mounting frame; 8. Tooling card; 9. Threaded shaft; 10. Connecting block; 11. U-shaped side plate; 12. Test pin; 13. Servo motor; 14. Connecting rod; 15. Double-headed threaded rod; 16. Threaded support plate; 17. Bottom plate; 18. Smooth rod; 19. Slide seat; 20. Universal gooseneck; 21. First bolt; 22. Second bolt; 23. Rubber pad; 24. Flip plate; 25. Multi-layer PCB circuit board body; 26. Vertical rod; 27. Threaded seat; 28. L-shaped slide; 29. ​​Connecting handle; 30. Positioning rod; 31. Connecting spring; 66. Round rod; 67. Handwheel; 68. Horizontal plate; 222. Circuit board tester; 333. Positioning groove. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figures 1 to 6 As shown, a multi-layer PCB circuit detection device includes a circuit detection device body 1, an electric guide rail 4 is fixedly provided on the upper side of the circuit detection device body 1, an electric slider 5 is installed on one side of the electric guide rail 4, a second electric push rod 6 is connected to the upper side of the electric slider 5, a mounting bracket 7 is fixedly connected to the upper side of the second electric push rod 6, and a threaded shaft 9 is rotatably connected to the inner side surface of the mounting bracket 7;

[0028] The outer surface of the threaded shaft 9 is threadedly connected to a connecting block 10, and a circuit board tester 222 is fixed on the lower side of the connecting block 10. The circuit board tester 222 guides the signal to each component on the circuit board by using a test needle 12, and then measures the response signal to determine whether the multi-layer PCB circuit board is working normally, thereby detecting the quality of the multi-layer PCB circuit board. A U-shaped side plate 11 is installed on the front side of the connecting block 10, and the inner side surface of the U-shaped side plate 11 is rotatably connected to a double-headed threaded rotating rod 15. The outer surface of the double-headed threaded rotating rod 15 is threadedly connected to two threaded support plates 16. The lower sides of the two threaded support plates 16 are connected to a base plate 17. The interior of the two base plates 17 is installed with a smooth rod 18. The outer surfaces of the two smooth rods 18 are slidably connected to a slide seat 19. The lower sides of the two slide seats 19 are connected to a universal gooseneck tube 20. The universal gooseneck tube 20 is a composite metal tube coated with a metal spring steel wire. It is a hose that can be bent into a certain shape and can maintain its shape. It is used to firmly position the adjusted test needle 12.

[0029] Two test pins 12 are connected to the lower side of the circuit board detector 222. Both ends of the double-headed threaded rotating rod 15 pass through the U-shaped side plate 11 and extend to both ends of the U-shaped side plate 11. Hand wheels 67 are fixedly installed on both ends of the double-headed threaded rotating rod 15. Two round rods 66 are fixedly connected to the inner side surface of the U-shaped side plate 11. The outer surfaces of the two round rods 66 are slidably connected to the inside of the threaded support plate 16. The two smooth rods 18 can limit the movement trajectory of the two threaded support plates 16, so that the two test pins 12 can be stably moved and adjusted. One side of the two slides 19 is threadedly connected with a first bolt 21 for fixing the test pin 12. The test pin 12 is located inside the slide 19 and the universal gooseneck 20.

[0030] A first electric push rod 2 is fixedly installed on the upper side of the main body 1 of the circuit detection device. The model of the first electric push rod 2 and the second electric push rod 6 is HB-DJ801. A top plate 3 is fixed on the upper side of the first electric push rod 2. A tooling card 8 is clamped on the upper side of the top plate 3. The height of the multi-layer PCB circuit board can be adjusted by using the first electric push rod 2, so that the circuit detection device can perform detection flexibly. The internal array of the tooling card 8 is connected with a horizontal plate 68. The horizontal plate 68 can be used to divide the area into an array distribution so as to be used for interval classification of the multi-layer PCB circuit board, for standardized circuit detection, and to improve detection. Precision, the interior of the horizontal plate 68 is installed with rubber pads 23 distributed in an array, and a multi-layer PCB circuit board body 25 is fixed on the upper side of the rubber pads 23. The rubber pads 23 can be used to increase the friction of the multi-layer PCB circuit board, which is used to position the multi-layer PCB circuit board. The internal rotation of the top plate 3 is connected with two symmetrically arranged flip plates 24. The lower sides of the two flip plates 24 are both arranged with positioning rods 30 for fixing the tooling card 8 in an array. The upper side of the positioning rod 30 passes through the flip plate 24 and extends to the upper side of the flip plate 24. A connecting spring 31 is fixedly connected between the positioning rod 30 and the flip plate 24.

[0031] Two symmetrically arranged connecting handles 29 are connected to the upper side of the tooling card plate 8, and four vertical rods 26 are fixedly installed on the upper side of the line detection device body 1, and four L-shaped slides 28 are fixedly connected to the lower side of the top plate 3. Through the installation and use of the vertical rods 26 and the L-shaped slides 28, the L-shaped slides 28 can move up and down at the vertical rods 26, allowing the tooling card plate 8 placed on the top plate 3 to move smoothly. The outer surface of the vertical rod 26 is slidably connected to the inside of the L-shaped slide 28, and the upper sides of the four vertical rods 26 are all threadedly connected with threaded seats 27.

[0032] The rear side of the threaded shaft 9 passes through the mounting bracket 7 and extends to the rear side of the mounting bracket 7. The rear side of the threaded shaft 9 is fixedly connected to the servo motor 13 through the motor mounting plate. The inner side of the mounting bracket 7 is fixedly connected to two connecting rods 14. The outer surfaces of the two connecting rods 14 are slidably connected to the inside of the connecting block 10. Through the setting of the connecting rods 14, the two connecting rods 14 can limit the moving trajectory of the connecting block 10, so that the connecting block 10 can drive the test needle 12 to move and adjust smoothly, which is convenient for line detection. The lower sides of the two slides 19 are threadedly connected with the second bolts 22 for fixing the slides 19.

[0033] An array of positioning grooves 333 are provided on the upper side of the tooling card plate 8 . The positioning grooves 333 match the positioning rods 30 . The lower side of the positioning rods 30 is connected to the upper side of the tooling card plate 8 through the positioning grooves 333 .

[0034] The working principle of the multi-layer PCB circuit detection device provided by the utility model is as follows:

[0035] By turning the hand wheel 67, the hand wheel 67 drives the double-threaded rotating rod 15 to rotate, so that the two threaded support plates 16 on the double-threaded rotating rod 15 can move toward each other or relative to each other, so as to adjust the distance between the two base plates 17 and move the two test pins 12 on the circuit board detector 222 left and right respectively, and then move the slides 19 on the two smooth rods 18 in turn, so that the slides 19 drive the test pins 12 to move back and forth, and then use the second bolt 22 to squeeze and fix the slides 19 to ensure the stability of the two test pins 12, and then use the two universal goosenecks 20 to drive the two test pins 12 to bend and adjust at will, so as to adjust the detection angle of the two test pins 12 and flexibly adjust the detection position, so that the entire circuit detection device can adapt to detect multi-layer PCB circuit board bodies 25 of different sizes, facilitate circuit path detection, improve the applicability of the circuit detection device, and have high detection efficiency;

[0036] By clamping the tooling card 8 to the top of the top plate 3, and then flipping the two plates 24 upward respectively, the positioning rod 30 installed with the connecting spring 31 on the flip plate 24 can be fitted to the top of the tooling card 8, so that the two sets of positioning rods 30 with elastic force can be used to position the tooling card 8, so as to firmly position the multi-layer PCB circuit board body 25 on the entire tooling card 8, and then the second electric push rod 6 can drive the mounting frame 7 to move downward, so that the two test pins 12 on the circuit board detector 222 are fitted to the predetermined detection circuit of the multi-layer PCB circuit board for path detection, and then the motor of the electric guide rail 4 can be used to drive the electric slider 5 to move on the electric guide rail 4 to adjust the circuit board detector 222 to move back and forth left and right, so as to detect the multi-layer PCB circuit boards at different positions, and at the same time, the output shaft of the servo motor 13 can drive the threaded shaft 9 to rotate, and at this time the connecting block 10 on the threaded shaft 9 can move backward to further adjust the detection position, so that the test pin 12 can batch detect the multi-layer PCB circuit boards, thereby improving the detection efficiency of the multi-layer PCB circuit board line detection device.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A multi-layer PCB circuit board circuit detection device, comprising a circuit detection device body (1), characterized in that: An electric guide rail (4) is fixedly provided on the upper side of the line detection device body (1), an electric slider (5) is installed on one side of the electric guide rail (4), a second electric push rod (6) is connected to the upper side of the electric slider (5), a mounting frame (7) is fixedly connected to the upper side of the second electric push rod (6), and a threaded shaft (9) is rotatably connected to the inner side surface of the mounting frame (7); The outer surface of the threaded shaft (9) is threadedly connected to a connecting block (10), a circuit board detector (222) is fixedly provided on the lower side of the connecting block (10), a U-shaped side plate (11) is installed on the front side of the connecting block (10), the inner side surface of the U-shaped side plate (11) is rotatably connected to a double-headed threaded rotating rod (15), the outer surface of the double-headed threaded rotating rod (15) is threadedly connected to two threaded support plates (16), the lower sides of the two threaded support plates (16) are connected to a bottom plate (17), the interiors of the two bottom plates (17) are installed with smooth rods (18), the outer surfaces of the two smooth rods (18) are slidably connected to a slide seat (19), and the lower sides of the two slide seats (19) are connected to a universal gooseneck tube (20).

2. A multi-layer PCB circuit board detection device according to claim 1, characterized in that: Two test needles (12) are connected to the lower side of the circuit board detector (222), and both ends of the double-threaded rotating rod (15) pass through the U-shaped side plate (11) and extend to both ends of the U-shaped side plate (11). Hand wheels (67) are fixedly installed at both ends of the double-threaded rotating rod (15). Two round rods (66) are fixedly connected to the inner side surface of the U-shaped side plate (11), and the outer surfaces of the two round rods (66) are slidably connected to the inside of the threaded support plate (16). One side of the two slide seats (19) is threadedly connected with a first bolt (21) for fixing the test needle (12), and the test needle (12) is located inside the slide seat (19) and the universal gooseneck tube (20).

3. A multi-layer PCB circuit board detection device according to claim 1, characterized in that: A first electric push rod (2) is fixedly installed on the upper side of the line detection device body (1), a placement top plate (3) is fixedly provided on the upper side of the first electric push rod (2), a tooling card (8) is clamped on the upper side of the placement top plate (3), the internal array of the tooling card (8) is connected to a transverse plate (68), an array-distributed rubber pad (23) is installed inside the transverse plate (68), a multi-layer PCB circuit board body (25) is fixed on the upper side of the rubber pad (23), the internal rotation of the placement top plate (3) is connected to two symmetrically arranged flip plates (24), the lower sides of the two flip plates (24) are both array-slidably provided with positioning rods (30) for fixing the tooling card (8), the upper side of the positioning rod (30) passes through the flip plate (24) and extends to the upper side of the flip plate (24), and a connecting spring (31) is fixedly connected between the positioning rod (30) and the flip plate (24).

4. A multi-layer PCB circuit board detection device according to claim 3, characterized in that: The upper side of the tooling card (8) is connected to two symmetrically arranged connecting handles (29), the upper side of the line detection device body (1) is fixedly mounted with four vertical rods (26), the lower side of the placement top plate (3) is fixedly connected with four L-shaped slides (28), the outer surface of the vertical rod (26) is slidably connected to the inside of the L-shaped slide (28), and the upper sides of the four vertical rods (26) are all threadedly connected to threaded seats (27).

5. A multi-layer PCB circuit board detection device according to claim 1, characterized in that: The rear side of the threaded shaft (9) passes through the mounting frame (7) and extends to the rear side of the mounting frame (7); the rear side of the threaded shaft (9) is fixedly connected to a servo motor (13) through a motor mounting plate; the inner side surface of the mounting frame (7) is fixedly connected to two connecting rods (14); the outer surfaces of the two connecting rods (14) are slidably connected to the inside of the connecting block (10); the lower sides of the two slides (19) are threadedly connected to second bolts (22) for fixing the slides (19).

6. A multi-layer PCB circuit board detection device according to claim 3, characterized in that: The upper side of the tooling card plate (8) is provided with an array of positioning grooves (333), the positioning grooves (333) are adapted to the positioning rod (30), and the lower side of the positioning rod (30) is clamped with the upper side of the tooling card plate (8) through the positioning grooves (333).

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