AOI test tool for workpiece appearance detection

Abstract

The utility model discloses an AOI test tool for workpiece appearance detection, which comprises a base, an AOI detector, a turntable and a pneumatic holder, a vertical frame is fixedly mounted above the base, guide rods are arranged on the left side and the right side of a support plate, the AOI detector is arranged at the bottom of the support plate, a test board is arranged right below the AOI detector, and the pneumatic holder is fixedly mounted on the base. Vertical plates are arranged on the left side and the right side of the testing table, a rotating motor is fixedly installed on the side wall of one side of each vertical plate, a rotating disc is arranged on the other side of each vertical plate, and a pneumatic clamping device is installed on one side of each rotating disc. According to the utility model, through the arrangement of the rotating motor, the rotating motor can drive the pneumatic clamp holder to rotate by 360 degrees, so that the pneumatic clamp holder can realize automatic turn-over when fixing a workpiece, manual intervention in a test process can be obviously reduced through automatic turn-over, and the workpiece does not need to be manually turned over, thereby not only improving the comprehensiveness of workpiece detection, but also improving the detection efficiency. And the testing speed is accelerated, and the overall production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of AOI testing tooling, in particular to an AOI testing tooling used for workpiece appearance detection. Background Art

[0002] AOI testing, or automatic optical inspection, is a testing technology based on optical principles. It is used to detect common defects encountered in PCB boards during welding production. The test fixture is an important part of the automatic optical inspection equipment. It is used to fix and support the object to be tested during the test process to ensure the accuracy and stability of the test. In general, the AOI test fixture is an indispensable part of the automatic optical inspection equipment. It plays a vital role in ensuring the accuracy and stability of the test.

[0003] Existing PCB boards usually have two sides, each of which may be installed with electronic components or wiring, so both sides need to be tested. If the test tooling does not support flipping operations, only one side of the PCB board can be tested, and the other side cannot be effectively tested, so that a comprehensive test cannot be performed, which may cause some defects or faults to be missed, thereby affecting the overall quality of the product.

[0004] For example, a testing tool for a switching power supply PCB board disclosed in announcement number CN202021703541.8 places the PCB board that needs to be inspected into the storage tank 2 for inspection, but only the upper surface of the PCB board can be inspected. In order to inspect the other side of the PCB board, the tester may need to manually take the PCB board out of the storage tank 2, flip it over and then replace it. This process is not only time-consuming, but also reduces the continuity of the overall testing process, thereby reducing the overall inspection efficiency.

[0005] Therefore, it is necessary to invent an AOI test fixture for workpiece appearance inspection to solve the above problems. Utility Model Content

[0006] The utility model aims to provide an AOI testing tool for workpiece appearance inspection, so as to solve the problem that the technology does not have an automatic flipping function.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an AOI test tool for workpiece appearance inspection, comprising a base, an AOI detector, a turntable and a pneumatic clamp, a stand is fixedly installed on the top of the base, a cylinder is fixedly installed on the top of the stand, the output end of the cylinder is connected to a support plate, guide rods are arranged on the left and right sides of the support plate, an AOI detector is arranged at the bottom of the support plate, a test bench is arranged directly below the AOI detector, a stand is arranged on the left and right sides of the test bench, a rotating motor is fixedly installed on the side wall of one side of the stand, a turntable is arranged on the other side of the stand, and a pneumatic clamp is installed on one side of the turntable.

[0008] Preferably, the guide rod is fixedly installed between the base and the stand, and there are four guide rods. The four guide rods are slidably connected to the support plate, so that the guide rod and the support plate can ensure the stability of the AOI detector when it is raised or lowered.

[0009] Preferably, an electric telescopic rod is arranged above the base, and a test bench is fixedly installed on the output end of the electric telescopic rod. Four electric telescopic rods are arranged so that the electric telescopic rod can drive the test bench to be raised and lowered.

[0010] Preferably, two rotating motors are provided, and the output ends of the two rotating motors are fixedly connected to a first bevel gear, and the top of the first bevel gear is meshingly connected to a second bevel gear, so that when the rotating motor rotates, it can drive the first bevel gear and the second bevel gear to rotate synchronously.

[0011] Preferably, the output end of the second bevel gear is fixedly connected to a rotating shaft and passes through the vertical plate. The rotating shaft and the vertical plate are rotationally connected. The output end of the rotating shaft is fixedly connected to a turntable, so that the rotating shaft can drive the turntable to rotate 360 ​​degrees.

[0012] Preferably, a sliding rod is fixedly connected to one side of the turntable close to the vertical plate, a sliding groove is provided at the contact position between the vertical plate and the sliding rod, the sliding rod and the sliding groove are slidably connected, and the sliding groove is designed in a circular ring structure, so that the sliding rod and the sliding groove can ensure the stability of the pneumatic clamp when driving the PCB board to rotate and turn over.

[0013] Preferably, two pneumatic clamps are provided, and the two pneumatic clamps are symmetrical with respect to the center of the test bench. Anti-slip pads are provided on the surfaces of the pneumatic clamps, so that the pneumatic clamps can stably clamp and position both sides of the PCB board.

[0014] Preferably, the anti-skid pad is a silicone pad, which is fixed to the pneumatic clamp by adhesive bonding, so that the anti-skid pad can improve the anti-skid performance between the pneumatic clamp and the PCB board while preventing the pneumatic clamp from clamping and damaging the PCB board.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] 1. Through the setting of the rotary motor, the rotary motor can drive the pneumatic gripper to rotate 360 ​​degrees, so that the pneumatic gripper can automatically turn over when fixing the workpiece. The automatic turning over can significantly reduce the manual intervention in the test process. They do not need to manually turn over the workpiece, which not only improves the comprehensiveness of workpiece detection, but also speeds up the test speed and improves the overall production efficiency;

[0017] 2. Through the setting of the pneumatic gripper, the pneumatic gripper can quickly and accurately clamp and release the PCB board, and the anti-skid pad set on the surface of the pneumatic gripper can increase the friction coefficient between the pneumatic gripper and the PCB board, making the clamping more secure, which helps prevent the PCB board from sliding or falling off due to vibration or external force during testing or flipping, ensuring the accuracy and safety of the test. At the same time, it can provide a buffer during the clamping process, reduce the direct pressure of the pneumatic gripper on the surface of the PCB board, and avoid scratches or crushing. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the test bench and the electric telescopic rod of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the pneumatic clamp of the utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating shaft and the sliding groove of the utility model;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the slide bar of the utility model.

[0023] Description of reference numerals:

[0024] 1. Base; 2. Stand; 3. Cylinder; 4. Support plate; 5. Guide rod; 6. AOI detector; 7. Test bench; 8. Electric telescopic rod; 9. Stand; 10. Rotating motor; 11. No. 1 bevel gear; 12. No. 2 bevel gear; 13. Rotating shaft; 14. Turntable; 15. Sliding rod; 16. Sliding groove; 17. Pneumatic clamp; 18. Anti-slip pad. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-5 An AOI test fixture for workpiece appearance inspection shown in the figure includes a base 1, a stand 2 is fixedly installed above the base 1, a cylinder 3 is fixedly installed on the top of the stand 2, the output end of the cylinder 3 is connected to a support plate 4, guide rods 5 are arranged on the left and right sides of the support plate 4, the guide rods 5 are fixedly installed between the base 1 and the stand 2, four guide rods 5 are arranged, and the four guide rods 5 are slidably connected to the support plate 4, an AOI detector 6 is arranged at the bottom of the support plate 4, a test bench 7 is arranged directly below the AOI detector 6, an electric telescopic rod 8 is arranged above the base 1, the test bench 7 is fixedly installed on the output end of the electric telescopic rod 8, four electric telescopic rods 8 are arranged, and a stand 9 is arranged on the left and right sides of the test bench 7, a rotating motor 10 is fixedly installed on the side wall of one side of the stand 9, a turntable 14 is arranged on the other side of the stand 9, and a pneumatic clamp 17 is installed on one side of the turntable 14.

[0027] In one aspect of the present embodiment, two rotating motors 10 are provided, and the output ends of the two rotating motors 10 are fixedly connected to a first bevel gear 11, and a second bevel gear 12 is meshedly connected above the first bevel gear 11, and the output end of the second bevel gear 12 is fixedly connected to a rotating shaft 13 and passes through the vertical plate 9, and the rotating shaft 13 and the vertical plate 9 are rotatably connected, and the output end of the rotating shaft 13 is fixedly connected to a turntable 14, and a sliding rod 15 is fixedly connected to the side of the turntable 14 close to the vertical plate 9, and a sliding groove 16 is provided at the contact position between the vertical plate 9 and the sliding rod 15, and the sliding rod 15 and the sliding groove 16 are slidably connected, and the sliding groove 16 is designed in a circular ring structure, and two pneumatic clamps 17 are provided, and the two pneumatic clamps 17 are centrally symmetrical with each other about the test bench 7, and the surface of the pneumatic clamp 17 is provided with an anti-skid pad 18, and the anti-skid pad 18 is a silicone pad, and the anti-skid pad 18 is fixed to the pneumatic clamp 17 by adhesive bonding.

[0028] Working principle of this utility model:

[0029] Refer to the instruction manual Figure 1-2 When using the utility model, firstly, the AOI test fixture is stably placed at a suitable position through the base 1, and the test fixture is connected to an external power supply so that the test fixture is powered on and can work. Then, the PCB board sample to be tested can be placed between the two pneumatic clamps 17, and the pneumatic clamps 17 are used to clamp and fix both sides of the PCB board sample. Then, the electric telescopic rod 8 is started to raise the test table 7 to the bottom of the PCB board sample for support. After the PCB board sample is clamped and fixed, the height of the AOI detector 6 can be adjusted by the cylinder 3, and the upper surface of the PCB board sample can be tested by the AOI detector 6.

[0030] Refer to the instruction manual Figure 3-4When using the utility model, after the upper surface inspection of the PCB board sample is completed, after the test bench 7 is lowered to a certain distance by the electric telescopic rod 8, the two rotating motors 10 can be started, and the rotating motors 10 drive the first bevel gear 11, the second bevel gear 12 and the rotating shaft 13 to rotate, thereby the rotating shaft 13 drives the turntable 14 and the pneumatic clamper 17 to rotate, so that the PCB board sample clamped by the pneumatic clamper 17 is turned over as it rotates, and the AOI detector 6 continues to inspect the other side of the PCB board sample.

Claims

1. An AOI test fixture for workpiece appearance inspection, comprising a base (1), an AOI detector (6), a turntable (14) and a pneumatic clamp (17), characterized in that: A stand (2) is fixedly mounted above the base (1), a cylinder (3) is fixedly mounted on the top of the stand (2), an output end of the cylinder (3) is connected to a support plate (4), guide rods (5) are arranged on the left and right sides of the support plate (4), an AOI detector (6) is arranged at the bottom of the support plate (4), a test bench (7) is arranged directly below the AOI detector (6), a stand (9) is arranged on the left and right sides of the test bench (7), a rotating motor (10) is fixedly mounted on one side wall of the stand (9), a turntable (14) is arranged on the other side of the stand (9), and a pneumatic clamp (17) is installed on one side of the turntable (14).

2. The AOI test tool for workpiece appearance inspection according to claim 1, characterized in that: The guide rod (5) is fixedly installed between the base (1) and the stand (2), and four guide rods (5) are provided. The four guide rods (5) are slidably connected to the support plate (4).

3. The AOI test tool for workpiece appearance inspection according to claim 1, characterized in that: An electric telescopic rod (8) is arranged above the base (1), a test bench (7) is fixedly mounted on the output end of the electric telescopic rod (8), and four electric telescopic rods (8) are arranged.

4. The AOI test tool for workpiece appearance inspection according to claim 1, characterized in that: Two rotating motors (10) are provided, and the output ends of the two rotating motors (10) are fixedly connected to a first bevel gear (11), and the upper portion of the first bevel gear (11) is meshingly connected to a second bevel gear (12).

5. The AOI test tool for workpiece appearance inspection according to claim 4, characterized in that: The output end of the second bevel gear (12) is fixedly connected to a rotating shaft (13) and penetrates the vertical plate (9). The rotating shaft (13) and the vertical plate (9) are rotationally connected. The output end of the rotating shaft (13) is fixedly connected to a rotating disk (14).

6. The AOI test tool for workpiece appearance inspection according to claim 5, characterized in that: A sliding rod (15) is fixedly connected to one side of the turntable (14) close to the vertical plate (9); a sliding groove (16) is provided at the contact position between the vertical plate (9) and the sliding rod (15); the sliding rod (15) and the sliding groove (16) are slidably connected; and the sliding groove (16) is designed to be a circular ring structure.

7. The AOI test tool for workpiece appearance inspection according to claim 1, characterized in that: Two pneumatic clamps (17) are provided, and the two pneumatic clamps (17) are centrally symmetrical with respect to the test bench (7). Anti-slip pads (18) are provided on the surfaces of the pneumatic clamps (17).

8. The AOI test tool for workpiece appearance inspection according to claim 7, characterized in that: The anti-skid pad (18) is a silicone pad, and the anti-skid pad (18) is fixed on the pneumatic clamp (17) by adhesive bonding.

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