Annular circuit board test equipment

Abstract

The utility model discloses an annular circuit board test device which comprises a control system, an annular conveying line, a material sending station robot, a test station robot and a qualified product conveying line. The material sending station robot and the testing station robot are located on the side edge of the annular conveying line. A to-be-detected bin is arranged near the material sending station robot so that the material sending station robot can send circuit boards on the to-be-detected bin to the annular conveying line. The first camera, the second camera, the testing tool and the unqualified product bin are arranged beside the testing station robot, the control system judges that unqualified circuit boards are conveyed to the unqualified product bin through the testing station robot, and qualified circuit boards are conveyed to the qualified product conveying line. The beneficial effects of the utility model are that the annular conveying line is adopted, so that the circuit board missing test caused by too long occasional test time and too late grabbing of the circuit board by the robot is avoided, the instantaneous fluctuation of productivity is buffered, and the number of the robots is reduced.

Description

Technical Field

[0001] The utility model relates to a testing device for a circular circuit board. Background Art

[0002] Before the circuit board leaves the factory, a full inspection needs to be carried out. The existing technology mainly relies on manual visual inspection to check whether the components fall off or are inserted reversely, and manually put the circuit board into the test fixture for power-on testing. Using manual operation, it is easy to miss defects and tests, resulting in unstable quality and low efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the existing technology and provide a testing device for a circular circuit board.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] A testing device for a circular circuit board, which includes a control system, a circular conveyor line, a feeding station robot, a testing station robot, and a qualified product conveyor line; the feeding station robot and the testing station robot are respectively located on the sides of the circular conveyor line; a to-be-tested bin is arranged near the feeding station robot so that the feeding station robot can send the circuit board on the to-be-tested bin to the circular conveyor line; a first camera, a second camera, a test fixture, and a non-conforming product bin are respectively arranged beside the testing station robot. The first camera is arranged above the circular conveyor line to transmit the position information of the to-be-tested circuit board captured to the testing station robot. The testing station robot grabs the to-be-tested circuit board and sends it to the second camera to photograph the circuit board for the control system to judge whether the plugging information of the electronic components is qualified. The testing station robot also grabs the to-be-tested circuit board to the test fixture for power-on testing. The circuit board judged unqualified by the control system is sent to the non-conforming product bin through the testing station robot, and the circuit board with qualified test is sent to the qualified product conveyor line. The transmission direction of the qualified product conveyor line is from the inside of the circular conveyor line to the outside of the circular conveyor line.

[0006] In another preferred embodiment, a graphic identifier recognizable by the control system is arranged on the circuit board, including but not limited to a two-dimensional code and a bar code.

[0007] In another preferred embodiment, the to-be-tested bin includes a belt tray lifting table and an empty tray lifting table that are respectively driven by a stepping motor and a lead screw to lift, and a handling arm can move between the belt tray lifting table and the empty tray lifting table to transfer the trays on the belt tray lifting table and the empty tray lifting table.

[0008] In another preferred embodiment, a suction cup that can be adsorbed on the tray is arranged at the end of the handling arm.

[0009] The beneficial effects of the present utility model are as follows: By adopting a circular conveyor line, it avoids the situation where the robot fails to pick up the circuit board in time due to occasional long testing time, resulting in missed testing of the circuit board, buffers the instantaneous fluctuations in production capacity, and reduces the number of robots. Machine vision replaces manual visual inspection of the circuit board, reducing misjudgment. It can achieve unmanned testing of any circuit board, eliminate the quality instability caused by human factors, and improve the testing efficiency.

[0010] The following further elaborates on the present utility model in conjunction with the accompanying drawings and embodiments; however, a circular circuit board testing device of the present utility model is not limited to the embodiments. Description of the Drawings

[0011] Figure 1 is a schematic diagram of the overall structure of a circular circuit board testing device according to a preferred embodiment of the present utility model.

[0012] Figure 2 is a schematic diagram of the structure of the testing bin of a circular circuit board testing device according to a preferred embodiment of the present utility model. Detailed Embodiment

[0013] Embodiment. Refer to Figure 1 As shown, a circular circuit board testing device of the present utility model includes a control system, a circular conveyor line 1, a feeding station robot 2, a testing station robot 3, and a qualified product conveyor line 4; the feeding station robot 2 and the testing station robot 3 are respectively located on the sides of the circular conveyor line 1; a testing bin 5 is provided near the feeding station robot 2 so that the feeding station robot 2 can send the circuit board on the testing bin 5 onto the circular conveyor line 1; a first camera 6, a second camera 7, a testing fixture 8, and a non-conforming product bin 9 are respectively arranged beside the testing station robot 3. The first camera 6 is arranged above the circular conveyor line 1 to transmit the position information of the circuit board to be tested captured to the testing station robot 3. The acquisition of the position information can be specifically that the circuit board is provided with a graphic identifier recognized by the control system, including but not limited to two-dimensional codes and barcodes. The testing station robot 3 grabs the circuit board to be tested according to the position information and sends it to the second camera 7 for photographing the circuit board to enable the control system to judge whether the plugging information of the electronic components is qualified, such as whether the electronic components are inserted reversely or lost. The testing station robot 3 also grabs the circuit board to be tested to the testing fixture 8 for power-on testing. The circuit board judged unqualified by the control system is sent to the non-conforming product bin 9 through the testing station robot 3, and the circuit board tested qualified is sent to the qualified product conveyor line 4. As Figure 1 shown, the transmission direction of the qualified product conveyor line 4 is from the inside of the circular conveyor line 1 to the outside of the circular conveyor line 1, reducing the occupied size of the entire device.

[0014] When the testing station robot 3 is too late to pick up the circuit board to be tested flowing by for testing, the circuit board to be tested continues to circulate along the annular conveyor line 1 without flowing out until it is picked up by the testing station robot 3 for testing. In this way, it is avoided that in case of occasional long testing time, the circuit board cannot be picked up in time, resulting in missed testing of the circuit board.

[0015] In this embodiment, the testing tooling 8 is a replaceable integral module. By replacing different modules, different circuit boards can be tested. The testing station robot 3 and the first camera 6 can cooperate to pick up any circuit board. In this way, the entire production line can achieve the universality of testing any circuit board, improving the applicable range of the line body.

[0016] Combined with Figure 2 , the to-be-tested bin 5 includes a loaded tray lifting table 11 and an empty tray lifting table 12 that are respectively driven to lift by a stepping motor 9 and a lead screw 10. The handling arm 13 can move between the loaded tray lifting table 11 and the empty tray lifting table 12 to transfer the trays on the loaded tray lifting table 11 and the empty tray lifting table 12. A suction cup 14 that can be adsorbed on the tray is provided at the end of the handling arm 13. The stepping motor 9 and the lead screw 10 can accurately control the lifting height of the lifting table. The loaded trays 15 are stacked on the loaded tray lifting table 11. When the circuit boards in the top-layer loaded tray are taken out, the empty tray lifting table 12 descends by the height of one tray. The handling arm 13 transports the empty loaded tray 15 (the materials have been taken out) to the empty tray lifting table 12 for stacking through the suction cup 14. Then the loaded tray lifting table 11 rises by the height of one tray, lifting the next layer of loaded tray to the height that can be picked up by the feeding station robot 2. In this way, continuous feeding of multiple layers of trays is realized, effectively reducing the number of feeding times and improving the equipment efficiency.

[0017] The equipment of this embodiment adopts the annular conveyor line 1, which avoids the missed testing of the circuit board caused by occasional too long testing time and the robot's inability to pick up the circuit board in time, buffers the instantaneous fluctuation of production capacity, and reduces the number of robots. Machine vision (the second camera 7) replaces the manual visual inspection of the circuit board, reducing misjudgment. The replaceable testing module and the vision-guided robot realize the applicability of any circuit board.

[0018] The above embodiments are only used to further illustrate an annular circuit board testing device of the present invention, but the present invention is not limited to the embodiments. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A ring circuit board testing device, characterized in that: It includes a control system, an annular conveyor line, a material delivery station robot, a test station robot and a qualified product conveyor line; the material delivery station robot and the test station robot are respectively located on the sides of the annular conveyor line; a warehouse to be tested is provided near the material delivery station robot so that the material delivery station robot can deliver the circuit board in the warehouse to be tested to the annular conveyor line; a first camera, a second camera, a test fixture and a defective product warehouse are respectively arranged beside the test station robot, the first camera is arranged above the annular conveyor line to transmit the position information of the photographed circuit board to the test station robot, the test station robot grabs the circuit board to be tested and sends it to the second camera to shoot the circuit board for the control system to judge whether the plug-in information of the electronic components is qualified or not, the test station robot also grabs the circuit board to be tested to the test fixture for power-on test, the control system judges that the unqualified circuit board is sent to the defective product warehouse through the test station robot, and the qualified circuit board is sent to the qualified product conveyor line, and the transmission direction of the qualified product conveyor line is from the inside of the annular conveyor line to the outside of the annular conveyor line.

2. The ring circuit board testing device according to claim 1, characterized in that: The circuit board is provided with a graphic identifier recognized by the control system, including but not limited to a QR code and a bar code.

3. The ring-shaped circuit board testing device according to claim 1, characterized in that: The warehouse to be tested includes a lifting platform for a pallet with material and a lifting platform for an empty pallet, which are respectively lifted and lowered by a stepping motor and a screw rod. The transport arm can move between the lifting platform for a pallet with material and the lifting platform for an empty pallet to transfer the pallets on the lifting platform for a pallet with material and the lifting platform for an empty pallet.

4. The ring-shaped circuit board testing device according to claim 3, characterized in that: The end of the transport arm is provided with a suction cup which can be adsorbed on the tray.

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