Device for testing thickness of PCB (Printed Circuit Board)

Abstract

The utility model discloses a device for testing the thickness of a PCB (Printed Circuit Board). The device comprises a detection table, a plurality of conveying rollers are uniformly and rotatably arranged on the detection table, a conveying belt is sleeved on the outer walls of the plurality of conveying rollers, a mounting table is fixedly arranged at the top end of the edge position of the detection table, and a base is fixedly arranged at the center of the bottom wall of the mounting table. According to the utility model, the bearing plate at the top end of the electric telescopic rod can be driven to rotate on the detection table, the bearing plate can be moved to the position above a PCB to be tested, automatic feeding can be realized through periodic work of the first motor, the electric telescopic rod and the air pump, the labor burden of workers can be reduced, the test efficiency can be improved, and the labor intensity of workers can be reduced. Meanwhile, the to-be-tested PCB can be fixed, the to-be-tested PCB can be stably placed on the clamping plate, the stability of the to-be-tested PCB can be improved, and the thickness of the to-be-tested PCB can be conveniently and accurately tested through the infrared distance meter.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board thickness testing, in particular to a device for testing the thickness of a PCB board. Background Art

[0002] Printed circuit board, also known as printed circuit board, printed circuit board, often uses the English abbreviation PCB (Printedcircuit board), is an important electronic component, a support for electronic components, and a provider of circuit connections for electronic components. Because it is made using electronic printing technology, it is called a "printed" circuit board. Before the emergence of printed circuit boards, the interconnection between electronic components was directly connected by wires to form a complete circuit. Circuit panels only existed as effective experimental tools, while printed circuit boards have become an absolute dominant position in the electronics industry.

[0003] After searching, the patent number is CN205426037U, which discloses a device for testing the thickness of PCB boards. Although it can quickly and effectively identify whether the PCB board samples meet the design requirements, when in use, it is necessary to manually load and unload the PCB boards continuously, which requires a lot of energy from the staff and affects the test efficiency. At the same time, when testing the PCB boards, the scale is used for measurement, and the manual reading further affects the test efficiency. At the same time, if the placed PCB boards are not fixed, the test accuracy will be affected.

[0004] Therefore, a device for testing the thickness of a PCB is proposed. Utility Model Content

[0005] The utility model aims to provide a device for testing the thickness of a PCB board, so as to solve the technical problems of low testing efficiency and insufficient testing accuracy in the existing devices for testing the thickness of a PCB board, thereby achieving the purpose of improving the testing efficiency and accuracy of the PCB board thickness.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A device for testing the thickness of a PCB board, comprising: a testing platform, on which a plurality of conveying rollers are evenly rotated and mounted, a conveying belt is sleeved on the outer walls of the plurality of conveying rollers, a mounting platform is fixedly mounted on the top of the edge of the testing platform, a base is fixedly mounted at the center of the bottom wall of the mounting platform, and an infrared rangefinder is fixedly mounted at the center of the bottom wall of the base;

[0008] An automatic loading assembly is arranged on the side wall of the detection platform, and the automatic loading assembly includes a mounting frame fixedly mounted on the side wall of the detection platform, a first motor is fixedly mounted on the bottom end of the mounting frame, an output end of the first motor extends to the top end of the mounting frame and is fixedly connected to an electric telescopic rod, a bearing plate is fixedly connected to the top end of the electric telescopic rod, an end of the bearing plate away from the electric telescopic rod is fixedly connected to an air pump, and a suction cup is arranged at the bottom end of the air pump.

[0009] Preferably, the suction cup is connected to an air pump.

[0010] Preferably, a second motor is fixedly mounted on the side wall of the detection platform, and an output end of the second motor is fixedly connected to the central axis of one of the conveying rollers.

[0011] Preferably, a control terminal is fixedly mounted on the side wall of the detection platform, and the control terminal is electrically connected to the electric telescopic rod, the air pump, the first motor and the second motor.

[0012] Preferably, a clamping assembly is also provided on the mounting platform, and the clamping assembly includes a connecting shaft rotatably mounted on the side wall of the mounting platform, threaded strips are symmetrically fixedly mounted on the outer wall of the connecting shaft, movable plates are symmetrically sleeved on both ends of the connecting shaft, and a clamping plate is fixedly connected to the bottom end of the movable plate, the inner side of the clamping plate is inclined, and the bottom wall of the clamping plate fits against the side wall of the conveyor belt.

[0013] Preferably, a threaded hole matched with the threaded strip is opened on the side wall of the movable plate, a third motor electrically connected to the control terminal is fixedly mounted on the side wall of the mounting platform, and an output end of the third motor is fixedly connected to the central axis of the connecting shaft.

[0014] Preferably, a limiting rod is fixedly mounted on the side wall of the mounting platform, and the limiting rod is located directly above the connecting shaft, and a limiting hole matching the limiting rod is formed at the top end of the movable plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model is provided with an automatic feeding assembly. The first motor can drive the bearing plate at the top of the electric telescopic rod to rotate on the testing table, so that the bearing plate can be moved above the PCB board to be tested, and the electric telescopic rod can drive the bearing plate and the air pump to move in the vertical direction, so that the suction cup at the bottom of the air pump can fit the PCB board to be tested. At this time, the air pump extracts the air in the suction cup, so that the suction cup can firmly suck the PCB board to be tested, and further drives the PCB board to be tested to move above the conveyor belt through the first motor, and injects air into the suction cup through the air pump to separate the suction cup from the PCB board to be tested. Through the periodic operation of the first motor, the electric telescopic rod and the air pump, automatic feeding can be realized, the labor burden of the staff can be reduced, and the test efficiency can be improved.

[0017] 2. The utility model provides a clamping assembly. When the conveyor belt drives the PCB board to be tested to move to the bottom of the mounting table, the second motor is temporarily powered off to make the PCB board to be tested temporarily stay on the conveyor belt. Then the third motor is powered on. When the third motor drives the connecting shaft to rotate clockwise, the movable plate can move in the same direction along the limit rod through the threaded holes in cooperation with the threaded strips on both sides of the connecting shaft. The obliquely arranged clamping plate can clamp the PCB board to be tested on the conveyor belt, fix the PCB board to be tested, stably place the PCB board to be tested on the clamping plate, improve the stability of the PCB board to be tested, and facilitate accurate thickness testing of the PCB board to be tested by an infrared rangefinder. After the test is completed, the third motor drives the connecting shaft to rotate counterclockwise to make the clamping plate slide toward the two ends of the testing table, so that the tested PCB board can be placed on the conveyor belt again for transportation, which is convenient for testing the next PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the detection platform in the embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the detection platform in the embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the top of the mounting frame in the embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the third motor output terminal in the embodiment of the utility model.

[0022] In the figure: 1. testing table; 2. conveyor belt; 3. mounting frame; 4. first motor; 5. electric telescopic rod; 6. control terminal; 7. second motor; 8. mounting table; 9. third motor; 10. bearing plate; 11. air pump; 12. conveyor roller; 13. clamping plate; 14. connecting shaft; 15. limiting rod; 16. base; 17. infrared rangefinder; 18. suction cup; 19. threaded strip; 20. limiting hole; 21. threaded hole; 22. movable plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Embodiment 1:

[0026] See also Figures 1 to 3 , a device for testing the thickness of a PCB board, comprising: a testing table 1, a plurality of conveying rollers 12 are evenly rotated and mounted on the testing table 1, a conveying belt 2 is sleeved on the outer walls of the plurality of conveying rollers 12, a mounting table 8 is fixedly mounted on the top of the edge of the testing table 1, a base 16 is fixedly mounted at the center of the bottom wall of the mounting table 8, and an infrared rangefinder 17 is fixedly mounted at the center of the bottom wall of the base 16;

[0027] An automatic loading assembly is arranged on the side wall of the testing platform 1, and the automatic loading assembly includes a mounting frame 3 fixedly mounted on the side wall of the testing platform 1, a first motor 4 is fixedly mounted on the bottom end of the mounting frame 3, an output end of the first motor 4 extends to the top end of the mounting frame 3 and is fixedly connected to an electric telescopic rod 5, a top end of the electric telescopic rod 5 is fixedly connected to a supporting plate 10, an end of the supporting plate 10 away from the electric telescopic rod 5 is fixedly connected to an air pump 11, and a suction cup 18 is arranged at the bottom end of the air pump 11.

[0028] See also Figure 3 , the suction cup 18 is connected to the air pump 11.

[0029] See also Figure 2 A second motor 7 is fixedly mounted on the side wall of the detection platform 1 , and an output end of the second motor 7 is fixedly connected to the central axis of one of the conveying rollers 12 .

[0030] See also Figure 1A control terminal 6 is also fixedly installed on the side wall of the detection platform 1, and the control terminal 6 is electrically connected to the electric telescopic rod 5, the air pump 11, the first motor 4 and the second motor 7.

[0031] In the present embodiment, when in use, the first motor 4 can drive the carrying plate 10 at the top of the electric telescopic rod 5 to rotate on the test table 1, so that the carrying plate 10 can be moved to the top of the PCB board to be tested, and the electric telescopic rod 5 can drive the carrying plate 10 and the air pump 11 to move in the vertical direction, so that the suction cup 18 at the bottom of the air pump 11 can fit the PCB board to be tested. At this time, the air pump 11 extracts the air in the suction cup 18, so that the suction cup 18 can firmly suck the PCB board to be tested, and further the PCB board to be tested is driven by the first motor 4 to move to the top of the conveyor belt 2, and the air pump 11 injects air into the suction cup 18 to separate the suction cup 18 from the PCB board to be tested. Through the periodic operation of the first motor 4, the electric telescopic rod 5 and the air pump 11, automatic loading can be realized, the labor burden of the staff can be reduced, and the test efficiency can be improved.

[0032] Embodiment 2:

[0033] See also Figures 1 to 4 , a device for testing the thickness of a PCB board also includes: a clamping assembly arranged on a mounting platform 8, the clamping assembly includes a connecting shaft 14 rotatably mounted on a side wall of the mounting platform 8, a threaded strip 19 is symmetrically fixedly mounted on an outer wall of the connecting shaft 14, and movable plates 22 are symmetrically sleeved on both ends of the connecting shaft 14, a clamping plate 13 is fixedly connected to the bottom end of the movable plate 22, the inner side of the clamping plate 13 is inclined, and the bottom wall of the clamping plate 13 is in contact with the side wall of the conveyor belt 2.

[0034] See also Figure 4 A threaded hole 21 matching the threaded strip 19 is provided on the side wall of the movable plate 22, and a third motor 9 electrically connected to the control terminal 6 is fixedly installed on the side wall of the mounting platform 8, and the output end of the third motor 9 is fixedly connected to the central axis of the connecting shaft 14.

[0035] See also Figure 4 A limit rod 15 is fixedly installed on the side wall of the mounting platform 8, and the limit rod 15 is located directly above the connecting shaft 14, and a limit hole 20 adapted to the limit rod 15 is opened at the top of the movable plate 22.

[0036] In the present embodiment, during use, after the conveyor belt 2 drives the PCB board to be tested to move to the bottom of the mounting platform 8, the second motor 7 is temporarily powered off to make the PCB board to be tested temporarily stay on the conveyor belt 2, and then the third motor 9 is powered on. When the third motor 9 drives the connecting shaft 14 to rotate clockwise, the movable plate 22 cooperates with the threaded bars 19 on both sides of the connecting shaft 14 through the threaded holes 21 to move in the same direction along the limit rod 15, and the inclined clamping plate 13 can clamp the PCB board to be tested on the conveyor belt 2, fix the PCB board to be tested, and stably place the PCB board to be tested on the clamping plate 13, so as to improve the stability of the PCB board to be tested, and facilitate the accurate thickness test of the PCB board to be tested by the infrared rangefinder 17. After the test is completed, the third motor 9 drives the connecting shaft 14 to rotate counterclockwise to make the clamping plate 13 slide toward the two ends of the detection platform 1, so that the tested PCB board can be placed on the conveyor belt 2 again for transportation, so as to facilitate the testing of the next PCB board.

[0037] Working principle: First, the first motor 4 on the mounting frame 3 can drive the carrying plate 10 at the top of the electric telescopic rod 5 to rotate on the testing platform 1, so that the carrying plate 10 can be moved to the top of the PCB board to be tested, and the electric telescopic rod 5 can drive the carrying plate 10 and the air pump 11 to move in the vertical direction, so that the suction cup 18 at the bottom of the air pump 11 can fit with the PCB board to be tested. At this time, the air pump 11 extracts the air in the suction cup 18, so that the suction cup 18 can firmly suck the PCB board to be tested, and further drive the PCB board to be tested to move to the top of the conveyor belt 2 through the first motor 4, and inject air into the suction cup 18 through the air pump 11 to separate the suction cup 18 from the PCB board to be tested. Through the periodic operation of the first motor 4, the electric telescopic rod 5 and the air pump 11, automatic loading can be realized, the labor burden of the staff can be reduced, and the test efficiency can be improved. When the conveyor belt 2 drives the PCB board to be tested to move to the bottom of the mounting platform 8, the second motor 7 is temporarily powered off, so that the PCB board to be tested temporarily stays On the conveyor belt 2, the third motor 9 is then energized. When the third motor 9 drives the connecting shaft 14 to rotate clockwise, the movable plate 22 can move in the same direction along the limit rod 15 through the threaded hole 21 in cooperation with the threaded strips 19 on both sides of the connecting shaft 14, and the inclined clamping plate 13 can clamp the PCB board to be tested on the conveyor belt 2, fix the PCB board to be tested, and stably place the PCB board to be tested on the clamping plate 13, so as to improve the stability of the PCB board to be tested, and facilitate the accurate thickness test of the PCB board to be tested by the infrared rangefinder 17. The distance between the infrared rangefinder 17 and the clamping plate 13 minus the distance between the infrared rangefinder 17 and the PCB board to be tested can obtain the thickness of the PCB board to be tested. After the test is completed, the data can be recorded on the control terminal 6, and the third motor 9 drives the connecting shaft 14 to rotate counterclockwise to make the clamping plate 13 slide toward the two ends of the detection table 1, so that the tested PCB board can be placed on the conveyor belt 2 again for transportation, so as to facilitate the testing of the next PCB board.

[0038] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A device for testing the thickness of a PCB, comprising: The detection platform (1) is characterized in that: a plurality of conveying rollers (12) are evenly and rotatably mounted on the detection platform (1), a conveying belt (2) is commonly sleeved on the outer walls of the plurality of conveying rollers (12), a mounting platform (8) is fixedly mounted on the top of the edge of the detection platform (1), a base (16) is fixedly mounted at the center of the bottom wall of the mounting platform (8), and an infrared rangefinder (17) is fixedly mounted at the center of the bottom wall of the base (16); An automatic loading assembly is arranged on the side wall of the detection platform (1), and the automatic loading assembly comprises a mounting frame (3) fixedly mounted on the side wall of the detection platform (1); a first motor (4) is fixedly mounted on the bottom end of the mounting frame (3); an output end of the first motor (4) extends to the top end of the mounting frame (3) and is fixedly connected to an electric telescopic rod (5); a bearing plate (10) is fixedly connected to the top end of the electric telescopic rod (5); an end of the bearing plate (10) away from the electric telescopic rod (5) is fixedly connected to an air pump (11); a suction cup (18) is arranged at the bottom end of the air pump (11).

2. The device for testing the thickness of a PCB according to claim 1, characterized in that: The suction cup (18) is connected to the air pump (11).

3. The device for testing the thickness of a PCB according to claim 2, characterized in that: A second motor (7) is fixedly mounted on the side wall of the detection platform (1), and an output end of the second motor (7) is fixedly connected to the central axis of one of the conveying rollers (12).

4. The device for testing the thickness of a PCB according to claim 3, characterized in that: A control terminal (6) is also fixedly mounted on the side wall of the detection platform (1), and the control terminal (6) is electrically connected to the electric telescopic rod (5), the air pump (11), the first motor (4) and the second motor (7).

5. The device for testing the thickness of a PCB according to claim 1, characterized in that: The mounting platform (8) is also provided with a clamping assembly, which comprises a connecting shaft (14) rotatably mounted on the side wall of the mounting platform (8), a threaded strip (19) being symmetrically fixedly mounted on the outer wall of the connecting shaft (14), movable plates (22) being symmetrically sleeved at both ends of the connecting shaft (14), a clamping plate (13) being fixedly connected to the bottom end of the movable plate (22), the inner side of the clamping plate (13) being inclined, and the bottom wall of the clamping plate (13) being in contact with the side wall of the conveyor belt (2).

6. The device for testing the thickness of a PCB according to claim 5, characterized in that: A threaded hole (21) adapted to the threaded strip (19) is provided on the side wall of the movable plate (22); a third motor (9) electrically connected to the control terminal (6) is fixedly mounted on the side wall of the mounting platform (8); an output end of the third motor (9) is fixedly connected to the central axis of the connecting shaft (14).

7. The device for testing the thickness of a PCB according to claim 6, characterized in that: A limiting rod (15) is fixedly mounted on the side wall of the mounting platform (8), and the limiting rod (15) is located directly above the connecting shaft (14). A limiting hole (20) matching the limiting rod (15) is formed at the top end of the movable plate (22).

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