High-speed automatic testing machine for circuit board

Abstract

The utility model discloses a circuit board high-speed automatic testing machine, which relates to the technical field of testing machines, and comprises a workbench and a testing machine main body, the testing machine main body is arranged at the top of the workbench, a testing head is arranged on the testing machine main body, and a mobile station is arranged at the top of the testing machine main body. And a placing plate for supporting a circuit board is arranged at the top of the moving table. The beneficial effects of the utility model are that the first positioning block extrudes the placing plate backwards to limit the placing plate, and the second positioning block moves towards the direction of the circuit board to extrude the side edge of the circuit board to further limit the position of the circuit board; the phenomenon that the circuit board moves in the placing plate due to inertia generated when the moving table drives the placing plate to move is effectively prevented, the testing accuracy is further improved, and the annular lighting lamp is fixedly installed on the testing head, so that the testing head can conveniently light when testing the circuit board.

Description

Technical Field

[0001] The utility model relates to the field of testing machines, in particular to a high-speed automatic testing machine for circuit boards. Background Art

[0002] As an important component of electronic equipment, the quality and performance of circuit boards are directly related to the reliability and stability of the entire equipment. During the production process, strict testing of circuit boards is an essential link. Through testing, potential defects and faults on the circuit boards can be detected so that they can be repaired or replaced in time, thereby avoiding larger problems in subsequent production and use.

[0003] When in use, the existing automatic circuit board tester mainly uses a camera and image processing technology, and adjusts the position of the circuit board through a mobile structure to automatically detect defects such as missing components, wrong installation, wrong direction, and poor soldering at various positions on the circuit board. However, there are certain limitations in actual use. Since the circuit board is usually placed on a mobile table during use and moves with the mobile table as the test position changes, the mobile table will generate moving inertia when moving, which will cause the circuit board to shift on the mobile table, affecting the position of subsequent tests, resulting in inaccurate test data and affecting the test structure. Moreover, when the ambient light is poor, it is easy to affect the shooting of the detection head, thereby affecting the test results. Moreover, the detection head is located above the circuit board, which is easy to block the light irradiating the circuit board, affecting the user's viewing of the circuit board test status. Therefore, a high-speed automatic circuit board tester is proposed to solve the above problems. Utility Model Content

[0004] The purpose of the present utility model is to solve the problem in the prior art that a circuit board is usually placed on a movable table and moves with the movable table as the test position changes, and the movable table generates moving inertia when moving, thereby causing the circuit board to shift on the movable table, affecting the position of subsequent tests, thereby causing inaccurate test data, affecting the test structure and when the ambient light is poor, it is easy to affect the shooting of the detection head, thereby affecting the test results. Moreover, the detection head is located above the circuit board, which is easy to block the irradiation light of the circuit board, affecting the user's viewing of the circuit board test status. A high-speed automatic circuit board tester is proposed to solve the above problems.

[0005] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions:

[0006] A high-speed automatic testing machine for a circuit board, comprising:

[0007] A workbench and a test machine body, the test machine body is arranged on the top of the workbench, and a test head is arranged on the test machine body, a movable platform is arranged on the top of the test machine body, and a placement plate for supporting a circuit board is arranged on the top of the movable platform, a positioning assembly is arranged on the top of the placement plate, and the positioning assembly includes: a first positioning block and a second positioning block, a movable block is fixedly arranged on the bottom of the first positioning block, a sliding opening is provided on the top of the placement plate, an extrusion spring is fixedly provided in the inner cavity of the sliding opening, and the other end of the extrusion spring is fixedly provided on the outer wall of the movable block, a movable opening is provided on the outer wall of the first positioning block, and a pressing spring is fixedly provided in the inner cavity of the movable opening, a push block is fixedly provided on the other end of the pressing spring, and the push block is fixedly connected to the second positioning block.

[0008] Preferably, a fixing block is fixedly provided on the outer wall of the first positioning block, and the outer wall of the fixing block is rotatably connected to a limiting ring via a pin shaft.

[0009] Preferably, a limiting block is fixedly provided on the top of the placement plate, and a limiting ring is movably sleeved on the outer wall of the limiting block.

[0010] Preferably, a collar is provided on the top of the push block, a sleeve block is fixedly provided on the top of the first positioning block, and the collar is movably sleeved on the outer wall of the sleeve block.

[0011] Preferably, a protective pad is fixedly adhered to the outer wall of the second positioning block.

[0012] Preferably, a ring-shaped lighting fixture is movably sleeved on the outer wall of the test head.

[0013] Preferably, a bayonet is provided on the outer wall of the annular lighting fixture, a circular plate is fixedly provided on the outer wall of the test head, an insert is fixedly provided on the bottom of the circular plate, and a groove is provided on the outer wall of the insert, and a trapezoidal block is movably connected to the inner wall of the groove on the outer wall of the insert.

[0014] Preferably, a spring bar is fixedly provided on the inner wall of the groove formed on the outer wall of the inserting block, and the other end of the spring bar is fixedly provided on the outer wall of the trapezoidal clamping block.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In the present invention, by setting the connection relationship between the workbench, the test machine body, the placement plate, the first positioning block and the second positioning block, by placing the circuit board to be tested on the placement plate, the first positioning block is pushed by the extrusion spring, so that the first positioning block presses the placement plate backward, so as to limit the placement plate, and by pressing the push block against the spring, the second positioning block moves toward the circuit board, so that it presses the side of the circuit board, further limiting the position of the circuit board, effectively preventing the inertia generated when the moving platform drives the placement plate to move, causing the circuit board to shift in the placement plate, so that it is kept At the test position, the accuracy of the test is further improved, and the operation is simple, fast and convenient, which is conducive to promoting the rapid testing of circuit boards and improving test efficiency. By setting the connection relationship between the annular lighting fixture, the circular plate and the test head, the trapezoidal card block is inserted and stuck in the card slot, so that the annular lighting fixture is installed and fixed on the test head, which is convenient for the test head to illuminate the tested circuit board when testing the circuit board, and convenient for the user to check the status of the circuit board after the test and judge the test results. The installation and disassembly of the annular lighting fixture is simple, which is convenient for the maintenance and replacement of the annular lighting fixture and has strong flexibility in use.

[0017] 2. In the present invention, by setting the connection relationship between the limit ring and the limit block, the limit ring is placed on the limit block to fix the position of the first positioning block, which is convenient for limiting the first positioning block at the edge of the inner cavity of the placement plate, avoiding the first positioning block from being squeezed backward and affecting the placement of the circuit board, and by setting the connection relationship between the sleeve ring and the sleeve block, the position of the second positioning block is fixed by hanging the sleeve ring on the sleeve block, which is convenient for limiting the second positioning block at the edge of the first positioning block, avoiding the second positioning block from being squeezed and affecting the placement of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0019] In the attached figure:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the placement plate structure of the present utility model;

[0022] Figure 3 This is a schematic structural diagram of the first positioning block of the present utility model;

[0023] Figure 4 This is a schematic structural diagram of the second positioning block of the present utility model;

[0024] Figure 5 This is a schematic structural diagram of a ring-shaped lighting fixture of the present utility model;

[0025] Figure 6 This is a cross-sectional view of the plug-in structure of the present utility model.

[0026] Serial numbers in the figure: 1. workbench; 2. test machine body; 201. detection head; 202. moving table; 3. placement plate; 301. sliding mouth; 4. first positioning block; 401. moving block; 402. extrusion spring; 403. fixed block; 404. limiting ring; 405. limiting block; 406. moving mouth; 5. second positioning block; 501. push block; 502. pressing spring; 503. sleeve ring; 504. sleeve block; 505. protective pad; 6. ring lighting fixture; 601. bayonet; 7. round plate; 701. insert block; 702. trapezoidal clamping block; 703. spring bar. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Example: This embodiment provides a high-speed automatic test machine for circuit boards. Figure 1-6 , specifically, including:

[0029] The workbench 1 and the tester body 2 are provided. The tester body 2 is arranged on the top of the workbench 1 and is provided with a test head 201. The tester body 2 can automatically detect and test defects such as missing components, misinstalled components, wrong directions, and poor soldering on the circuit board through a camera and image processing technology. A moving platform 202 is provided on the top of the tester body 2, and a placement plate 3 for supporting the circuit board is provided on the top of the moving platform 202. A positioning component is provided on the top of the placement plate 3. The positioning component includes:

[0030] The first positioning block 4 and the second positioning block 5, the bottom of the first positioning block 4 is fixedly provided with a moving block 401, the top of the placement plate 3 is provided with a sliding opening 301, the inner cavity of the sliding opening 301 is fixedly provided with an extrusion spring 402, and the other end of the extrusion spring 402 is fixedly provided on the outer wall of the moving block 401, the outer wall of the first positioning block 4 is provided with a moving opening 406, and the inner cavity of the moving opening 406 is fixedly provided with a tightening spring 502, the other end of the tightening spring 502 is fixedly provided with a push block 501, and the push block 501 is fixedly connected to the second positioning block 5. When in use, the user places the circuit board to be tested on the placement plate 3, and the rear end of the circuit board is in contact with the rear wall of the placement plate 3, so that the circuit board can be tested. The position of the road plate plays a certain role in limiting the position of the road plate. The pushing force of the extrusion spring 402 pushes the moving block 401 backward, so that the moving block 401 moving backward drives the first positioning block 4 to move backward, so that the rear wall of the first positioning block 4 squeezes the placement plate 3, which plays a limiting role on the placement plate 3, and squeezes and pushes the pushing block 501 by the pressure spring 502, so as to drive the second positioning block 5 to move toward the circuit board, so as to squeeze the side of the second positioning block 5, further limiting the position of the circuit board, and effectively preventing the inertia generated when the moving platform 202 drives the placement plate 3 to move, causing the circuit board to shift in the placement plate 3, so that it can be kept in the test position, further improving the accuracy of the test.

[0031] A fixing block 403 is fixedly provided on the outer wall of the first positioning block 4, and the outer wall of the fixing block 403 is rotatably connected to the limiting ring 404 through a pin shaft. The user holds the limiting ring 404 to drive the first positioning block 4 to move, which is convenient for adjusting and controlling the use position of the first positioning block 4.

[0032] A limiting block 405 is fixedly provided on the top of the placement plate 3, and a limiting ring 404 is movably sleeved on the outer wall of the limiting block 405. By sleeved on the limiting ring 404 on the limiting block 405, the position of the first positioning block 4 is fixed, which facilitates limiting the first positioning block 4 to the edge of the inner cavity of the placement plate 3, thereby preventing the first positioning block 4 from being squeezed backward and affecting the placement of the circuit board.

[0033] A ring 503 is provided on the top of the push block 501, and a sleeve block 504 is fixedly provided on the top of the first positioning block 4, and the ring 503 is movably sleeved on the outer wall of the sleeve block 504. By hanging the ring 503 on the sleeve block 504, the position of the second positioning block 5 is fixed, which facilitates the second positioning block 5 to be limited to the edge of the first positioning block 4, thereby preventing the second positioning block 5 from squeezing and affecting the placement of the circuit board.

[0034] A protective pad 505 is fixedly adhered to the outer wall of the second positioning block 5, and a protective pad 505 is also provided on the rear wall of the first positioning block 4, which is beneficial to reducing the wear of the circuit board after the first positioning block 4 and the second positioning block 5 contact the circuit board.

[0035] The outer wall of the test head 201 is movably sleeved with a ring-shaped lighting fixture 6 to illuminate the circuit board during and after testing, making it convenient for the user to check the status of the circuit board and make test judgments.

[0036] A bayonet 601 is provided on the outer wall of the annular lighting fixture 6, a circular plate 7 is fixedly provided on the outer wall of the test head 201, an insert block 701 is fixedly provided on the bottom of the circular plate 7, and a groove is provided on the outer wall of the insert block 701, and a trapezoidal block 702 is movably connected to the inner wall of the groove provided on the outer wall of the insert block 701, a spring bar 703 is fixedly provided on the inner wall of the groove provided on the outer wall of the insert block 701, and the other end of the spring bar 703 is fixedly provided on the outer wall of the trapezoidal block 702. When in use, the annular lighting fixture 6 is aligned with the circular plate 7 and the circular plate 7 is pushed upwards to insert the insert block 701 into the annular lighting fixture 6, and when the trapezoidal block 702 is in contact with the circular plate 7 After the bayonet 601 is aligned, the trapezoidal block 702 is pushed outward by the pushing force of the spring bar 703, so that the trapezoidal block 702 is inserted into and stuck in the bayonet 601, so that the annular lighting fixture 6 is installed and fixed on the test head 201, which is convenient for illuminating the tested circuit board, and the trapezoidal block 702 is pressed inward by the bayonet 601 to disengage the trapezoidal block 702 from the bayonet 601. At this time, the annular lighting fixture 6 is removed from the circular plate 7 by pulling it downward, which is convenient for repair and replacement of the annular lighting fixture 6, and is convenient for installation and disassembly according to use needs, and has strong flexibility in use.

[0037] Specifically, the working principle and operation method of the utility model are as follows:

[0038] When in use, the user places the circuit board to be tested on the placement plate 3 and fits the rear end of the circuit board with the rear wall of the placement plate 3. By removing the limiting ring 404 from the limiting block 405, the pushing force of the squeezing spring 402 pushes the moving block 401 backward, so that the moving block 401 that moves backward drives the first positioning block 4 to move backward, so that the rear wall of the first positioning block 4 squeezes the placement plate 3, thereby limiting the placement plate 3. By removing the sleeve ring 503 from the sleeve block 504, the pressing spring 502 squeezes and pushes the pushing block 501, thereby driving the second positioning block 5 to move toward the circuit board, squeezing the side of the second positioning block 5, further limiting the position of the circuit board, effectively preventing the inertia generated when the moving platform 202 drives the placement plate 3 to move, causing the circuit board to shift in the placement plate 3, so that it is kept in the test position, further improving the accuracy of the test;

[0039] When in use, by aligning the annular lighting fixture 6 with the circular plate 7 and pushing the circular plate 7 upward, the insert block 701 is inserted into the annular lighting fixture 6, and when the trapezoidal block 702 is aligned with the bayonet 601, the pushing force of the spring bar 703 pushes the trapezoidal block 702 outward, so that the trapezoidal block 702 is inserted into and stuck in the bayonet 601, so that the annular lighting fixture 6 is installed and fixed on the test head 201, which is convenient for illuminating the tested circuit board and convenient for the user to check the status of the circuit board and judge the test results, and the trapezoidal block 702 is pressed inward through the bayonet 601 to disengage the trapezoidal block 702 from the bayonet 601. At this time, by pulling the annular lighting fixture 6 downward, the annular lighting fixture 6 can be removed from the circular plate 7, which is convenient for maintenance and replacement of the annular lighting fixture 6, and convenient for installation and disassembly according to use needs, and has strong flexibility in use.

[0040] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-speed automatic test machine for a circuit board, comprising a workbench (1) and a test machine body (2), wherein the test machine body (2) is arranged on the top of the workbench (1), and a test head (201) is arranged on the test machine body (2), a moving platform (202) is arranged on the top of the test machine body (2), and a placement plate (3) for supporting the circuit board is arranged on the top of the moving platform (202), characterized in that: A positioning assembly is provided on the top of the placement plate (3), and the positioning assembly includes: a first positioning block (4) and a second positioning block (5); a moving block (401) is fixedly provided on the bottom of the first positioning block (4); a sliding opening (301) is provided on the top of the placement plate (3); an extrusion spring (402) is fixedly provided in the inner cavity of the sliding opening (301), and the other end of the extrusion spring (402) is fixedly provided on the outer wall of the moving block (401); a moving opening (406) is provided on the outer wall of the first positioning block (4), and a pressing spring (502) is fixedly provided in the inner cavity of the moving opening (406); a push block (501) is fixedly provided on the other end of the pressing spring (502), and the push block (501) is fixedly connected to the second positioning block (5).

2. A high-speed automatic testing machine for circuit boards according to claim 1, characterized in that: A fixing block (403) is fixedly provided on the outer wall of the first positioning block (4), and the outer wall of the fixing block (403) is rotatably connected to a limiting ring (404) via a pin shaft.

3. The high-speed automatic testing machine for a circuit board according to claim 1, characterized in that: A limiting block (405) is fixedly provided on the top of the placement plate (3), and a limiting ring (404) is movably sleeved on the outer wall of the limiting block (405).

4. The high-speed automatic testing machine for a circuit board according to claim 1, characterized in that: A sleeve ring (503) is provided on the top of the push block (501), a sleeve block (504) is fixedly provided on the top of the first positioning block (4), and the sleeve ring (503) is movably sleeved on the outer wall of the sleeve block (504).

5. The high-speed automatic testing machine for a circuit board according to claim 1, characterized in that: A protective pad (505) is fixedly adhered to the outer wall of the second positioning block (5).

6. The high-speed automatic testing machine for a circuit board according to claim 1, characterized in that: The outer wall of the test head (201) is movably sleeved with a ring-shaped lighting fixture (6).

7. The high-speed automatic testing machine for a circuit board according to claim 6, characterized in that: The outer wall of the annular lighting fixture (6) is provided with a bayonet (601), the outer wall of the test head (201) is fixedly provided with a circular plate (7), the bottom of the circular plate (7) is fixedly provided with an insert block (701), and the outer wall of the insert block (701) is provided with a groove, and the inner wall of the groove provided on the outer wall of the insert block (701) is movably engaged with a trapezoidal block (702).

8. The high-speed automatic testing machine for a circuit board according to claim 7, characterized in that: A spring bar (703) is fixedly arranged on the inner wall of the groove formed on the outer wall of the insert block (701), and the other end of the spring bar (703) is fixedly arranged on the outer wall of the trapezoidal clamping block (702).

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