Automatic testing device for European-style plug cable

Abstract

The utility model relates to the technical field of electrical engineering machinery automation application, and especially relates to an automatic test device of a European-style plug cable. The device comprises an electric cabinet, a PLC logic control circuit, a plug connecting mechanism and a cable connecting mechanism are arranged in the electric cabinet, the plug connecting mechanism and the cable connecting mechanism are connected with the PLC logic control circuit through wires, and the cable connecting mechanism comprises a cable head connecting mechanism and a camera system arranged over the cable head connecting mechanism; the camera system sequentially comprises a camera light source, a camera and a camera information processing module from bottom to top. According to the utility model, the camera is used to determine different colors of the three power lines in the cable, so that the three power lines can be freely placed into the three cable test holes respectively when the cable is inserted into the cable test holes, the working intensity of operators is reduced, the working efficiency is improved, and test misjudgment is avoided. Therefore, the test efficiency of the European-style plug cable is improved, and the test accuracy reaches 100%.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical engineering machinery automation application, in particular to an automatic testing device for European plug cables. Background Art

[0002] At present, three-wire plug cables are often used in plug cables exported to Europe. The plug of this plug cable is used to plug in (connect) the power supply, and the cable is used to connect the load. There are generally three power cords of different colors in the cable. In the electrical industry, the phase line (L), neutral line (N) and ground line (E) of the cable are usually brown, blue and yellow / green respectively. These three power cords are connected to the phase line pole (L), neutral line pole (N) and ground line pole (E) of the plug respectively. Before the plug cable is packaged and shipped, it is often necessary to conduct a continuity test on the plug cable to ensure that the three power cords of different colors in the cable (such as brown power cord, blue power cord and yellow / green power cord) are accurately connected to the phase line pole (L), neutral line pole (N) and ground line pole (E) of the plug respectively and the connection points are in good contact. The traditional approach is: insert the plug of the product to be tested (plug cable) into the plug fixture of the test device, and manually insert the brown power cord, blue power cord and yellow / green power cord of the cable of the product to be tested into the corresponding cable test holes of the cable fixture. The plug fixture is provided with a plug insertion position sensor and a plug blade connection electrode, a plug locking cylinder is provided at the upper end of the plug fixture, and a plug locking plate is provided on the side of the plug fixture. The cable fixture is provided with a cable insertion position sensor and a cable test hole, and the side of the cable test hole is marked with the words "brown, blue and yellow / green", and a cable locking / connection electrode and a cable locking cylinder are provided at the upper end of the cable fixture. When the plug of the product to be tested is inserted into the plug fixture of the test device, the plug insertion position sensor installed on the plug fixture senses the presence of the product, and the plug locking cylinder is activated, driving the plug locking plate to clamp the product to be tested on the plug fixture from the side. At this time, the phase line pole (L), neutral line pole (N) and ground line pole (E) of the plug of the product to be tested are respectively in contact with the plug blade connection electrodes on the plug fixture, and the plug blade connection electrodes are connected to the relay logic control circuit of the electric control box. When the cables of the product to be tested are manually inserted into the corresponding cable test holes of the cable clamp, the cable insertion position sensor at the bottom of the cable test hole senses that the power cables are all inserted in place, and the cable locking cylinder is activated to drive the cable locking / connection electrode to press down, so that the cable locking / connection electrode presses the metal part of the wiring head of the power cable and presses it for good contact. Each cable locking / connection electrode is connected to the relay logic control circuit of the electric control box through a connecting wire.

[0003] When the phase pole (L), neutral pole (N) and ground pole (E) of the plug of the product to be tested are connected to the brown power line, blue power line and yellow / green power line of the cable respectively, and the continuity test is normal, the product is judged as a good product, and the green test OK indicator installed on the electric control box panel lights up. At this time, the plug locking cylinder and the cable locking cylinder drive the plug locking plate and the cable locking / connection electrode to reset respectively, and the operator can take out the tested product and test the next product. When the phase pole (L), neutral pole (N) and ground pole (E) of the plug of the product to be tested are connected to the brown power line, blue power line and yellow / green power line of the cable respectively, and one of them is abnormal, the product is judged as a defective product, and the test NG indicator and the corresponding power line connection abnormal indicator installed on the electric control box panel light up, accompanied by a buzzer alarm and shutdown. At this time, the operator needs to confirm the test NG information and press the reset switch to allow the plug locking cylinder and the cable locking cylinder to drive the plug locking plate and the cable locking / connection electrode to reset respectively, and then the tested product can be taken out to test the next product.

[0004] The disadvantage of using this test device to test products is that the operator needs to use the naked eye to judge the different colors of the three power cords in the cable of the product to be tested, and accurately insert the brown power cord, blue power cord and yellow / green power cord into the corresponding cable test holes respectively. Fatigue can easily occur after long-term operation, resulting in low production efficiency, and sometimes even plugging into the wrong hole and causing test misjudgment. Utility Model Content

[0005] In view of the above technical problems, the utility model solves the problems of low testing efficiency and test misjudgment of European plug cables and provides an automatic testing device for European plug cables.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is: an automatic testing device for European plug cables, including an electric control box, a PLC logic control circuit is provided in the electric control box, a plug connection mechanism and a cable connection mechanism connected to the PLC logic control circuit through a wire, the cable connection mechanism includes a cable head connection mechanism and a camera system arranged directly above the cable head connection mechanism; the camera system includes a camera light source, a camera and a camera information processing module from bottom to top.

[0007] Further: In the above automatic test device for European plug cables, a sensor signal amplifier is also provided on the back of the camera light source. In the case of weak optical fiber signal, this sensor signal amplifier is used to amplify the signal of the optical fiber sensor at the bottom of the test hole when the cable is inserted in place, and can also be set in any convenient adjustable position that does not affect the camera light source.

[0008] The plug connection mechanism includes a plug fixture, on which are provided three plug-piece connection electrodes connected to a PLC logic control circuit via wires, and a plug locking plate is provided on the side of the plug fixture, wherein the plug locking plate is connected to a plug locking cylinder via a plug locking rod.

[0009] A plug insertion position sensor is also provided on the side of the plug piece connecting electrode.

[0010] The cable head connection mechanism includes, from bottom to top, a cable clamp, three cable locking / connection electrodes connected to a PLC logic control circuit via wires, a cable locking cylinder, three cable test holes on the front of the cable clamp, and three circular holes for accommodating cable locking / connection electrodes on the vertical upper part of the cable test holes.

[0011] The diameter of the round hole is 4MM and the depth is 15MM; the diameter of the cable test hole is 3.2MM and the depth is 15MM, and the center distance between the cable test holes is 8MM.

[0012] There are also three cable insertion sensors at the vertical lower part of the cable test hole.

[0013] The camera is arranged just above the circular hole.

[0014] A light shield is arranged on the outer side of the cable connection mechanism.

[0015] A touch screen is provided on the electric control box panel, and a power indicator light, a product test OK indicator light, a product test NG indicator light and a buzzer are provided above the touch screen, and a power switch, an emergency stop switch and a reset switch are provided below the touch screen respectively. The touch screen, power indicator light, product test OK indicator light, product test NG indicator light, buzzer, power switch, emergency stop switch and reset switch are all connected to the PLC logic control circuit.

[0016] Compared with the prior art, the automatic testing device for the European plug cable comprises an electric control box, a PLC logic control circuit is arranged in the electric control box, a plug connection mechanism and a cable connection mechanism connected to the PLC logic control circuit through a wire, the cable connection mechanism comprises a cable head connection mechanism and a camera system arranged directly above the cable head connection mechanism; the camera system comprises a camera light source, a camera and a camera information processing module from bottom to top. The utility model uses a camera to judge the different colors of the three power cords in the cable, so that when the cable is inserted into the cable test hole, the three power cords can be placed in the three cable test holes at will, which reduces the operator's workload, improves work efficiency and eliminates test misjudgments. It used to take 8 seconds to test a product, but now it is reduced to only 5 seconds. Therefore, the utility model improves the test efficiency of European plug cables, and the test accuracy rate reaches 100%. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the automatic testing device for European plug cables of the utility model;

[0018] Among them, 1 is an electric control box, 2 is a camera light source, 3 is a camera, 4 is a camera information processing module, 5 is a sensor signal amplifier, 6 is a plug fixture, 7 is a three-plug connection electrode, 8 is a plug locking plate, 9 is a plug locking rod, 10 is a plug locking cylinder, 11 is a plug inserted into place sensor, 12 is a cable fixture, 13 is a cable locking / connection electrode, 14 is a cable locking cylinder, 15 is a cable test hole, 16 is a cable inserted into place sensor, 17 is a light hood, and 18 is a European plug cable. DETAILED DESCRIPTION

[0019] In order to facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] Reference Figure 1 As shown, an automatic testing device for European plug cables includes an electric control box 1, in which a PLC logic control circuit is arranged, a plug connection mechanism and a cable connection mechanism connected to the PLC logic control circuit through a wire, the cable connection mechanism includes a cable head connection mechanism and a camera system arranged directly above the cable head connection mechanism; the camera system includes a camera light source 2, a camera 3 and a camera information processing module 4 from bottom to top.

[0021] A sensor signal amplifier 5 is also provided on the back of the camera light source.

[0022] The cable connection mechanism includes a plug clamp 6, on which are provided three plug-piece connection electrodes 7 connected to the PLC logic control circuit through wires, and a plug locking plate 8 is provided on the side of the plug clamp 6, and the plug locking plate 8 is connected to a plug locking cylinder 10 through a plug locking rod 9.

[0023] A plug insertion position sensor 11 is also provided on the side of the three-plug connecting electrode 7 .

[0024] The cable head connection mechanism includes, from bottom to top, a cable clamp 12, three cable locking / connection electrodes 13 connected to a PLC logic control circuit via wires, and a cable locking cylinder 14. Three cable test holes 15 are provided on the front of the cable clamp 12, and three circular holes for accommodating the cable locking / connection electrodes 13 are provided vertically above the cable test holes.

[0025] The diameter of the round hole is 4MM and the depth is 15MM; the diameter of the cable test hole is 3.2MM and the depth is 15MM, and the center distance between the cable test holes is 8MM.

[0026] Three cable insertion position sensors 16 are also provided at the vertical lower part of the cable test hole.

[0027] The camera is arranged just above the circular hole, and the circular hole corresponds to the cable test hole 15 one by one.

[0028] A light shield 17 is provided on the outer side of the cable connection mechanism.

[0029] When the plug of the European plug cable 18 of the product to be tested is inserted into the plug fixture 6 of the testing device, the plug insertion position sensor 11 installed next to the three-plug connecting electrode 7 senses the presence of the product to be tested, and the plug locking cylinder 10 is activated, driving the plug locking plate 8 to clamp the product to be tested on the plug fixture 6 from the side.

[0030] When the three power cords in the cable of the product to be tested are manually and randomly inserted into the three cable test holes 15 of the cable clamp 12, after the three cable insertion sensors 16 at the vertical lower part of the cable test hole 15 sense that the three power cords of the cable are in place, the cable locking cylinder 14 is actuated to drive the cable locking / connecting electrode 13 to be pressed down, so that the cable locking / connecting electrode 13 presses the metal part of the terminal head of the power cord and presses it for good contact.

[0031] When the three cable locking / connecting electrodes 13 respectively press the three power cords of the cables, the camera light source 2 is turned on, the camera 3 starts taking pictures and transmits the photo information to the camera information processing module 4, the camera information processing module 4 scans the photos taken by the camera 3 from left to right, obtains the colors of the power cords in turn and transmits the signals representing the brown power cord, the blue power cord and the yellow / green power cord to the PLC logic controller, the PLC logic controller controls the corresponding relay to energize and perform a continuity test between the plug of the product to be tested and the cable to determine whether the phase line pole (L), neutral line pole (N) and ground line pole (E) of the plug of the product to be tested are respectively connected to the brown power cord, blue power cord and yellow / green power cord of the cable for the continuity test.

[0032] When the phase pole (L), neutral pole (N) and ground pole (E) of the plug of the product to be tested are connected to the brown power line, blue power line and yellow / green power line of the cable respectively and the continuity test is normal, the product is judged as a good product, and the green test OK indicator installed on the panel of the electric control box 1 is lit. At this time, the plug locking cylinder 10 and the cable locking cylinder 14 respectively drive the plug locking plate 8 and the cable locking / connection electrode 13 to reset. The operator takes out the tested product and can test the next product. When the phase pole (L), neutral pole (N) and ground pole (E) of the plug of the test product are connected to the brown power line, blue power line and yellow / green power line of the cable respectively, and one of them is abnormal, the product is judged as a defective product, and the test NG indicator installed on the panel of the electric control box is lit, accompanied by a buzzer alarm and shutdown, and the touch screen displays the defective information at the same time. At this time, the operator needs to confirm the test NG information and press the reset switch to allow the plug locking cylinder 10 and the cable locking cylinder 14 to respectively drive the plug locking plate 8 and the cable locking / connection electrode to reset before taking out the tested product to test the next product.

[0033] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An automatic testing device for European plug cables, comprising an electric control box (1), a PLC logic control circuit is arranged in the electric control box, a plug connection mechanism and a cable connection mechanism connected to the PLC logic control circuit via a wire, characterized in that: The cable connection mechanism comprises a cable head connection mechanism and a camera system arranged directly above the cable head connection mechanism; the camera system comprises, from bottom to top, a camera light source (2), a camera (3) and a camera information processing module (4).

2. The automatic testing device for European plug cables according to claim 1, characterized in that: A sensor signal amplifier (5) is also provided on the back of the camera light source.

3. The automatic testing device for European plug cables according to claim 2, characterized in that: The plug connection mechanism comprises a plug fixture (6), on which are provided three plug-piece connection electrodes (7) connected to a PLC logic control circuit via a wire, and a plug locking plate (8) is provided on the side of the plug fixture (6), wherein the plug locking plate (8) is connected to a plug locking cylinder (10) via a plug locking rod (9).

4. The automatic testing device for European plug cables according to claim 3, characterized in that: A plug insertion position sensor (11) is also provided on the side of the three-plug connecting electrode (7).

5. The automatic testing device for European plug cables according to claim 4, characterized in that: The cable head connection mechanism comprises, from bottom to top, a cable clamp (12), three cable locking / connecting electrodes (13) connected to a PLC logic control circuit via wires, and a cable locking cylinder (14); three cable test holes (15) are provided on the front of the cable clamp (12); and three circular holes for accommodating the cable locking / connecting electrodes (13) are provided vertically above the cable test holes.

6. The automatic testing device for European plug cables according to claim 5, characterized in that: The diameter of the round hole is 4MM and the depth is 15MM; the diameter of the cable test hole is 3.2MM and the depth is 15MM, and the center distance between the cable test holes is 8MM.

7. The automatic testing device for European plug cables according to claim 6, characterized in that: Three cable insertion position sensors (16) are also arranged at the vertical lower part of the cable test hole.

8. The automatic testing device for European plug cables according to claim 7, characterized in that: The camera is arranged just above the circular hole.

9. The automatic testing device for European plug cables according to claim 8, characterized in that: A light shield (17) is provided on the outer side of the cable connection mechanism.

10. The automatic testing device for European plug cables according to any one of claims 1 to 9, characterized in that: A touch screen is provided on the electric control box panel, and a power indicator light, a product test OK indicator light, a product test NG indicator light and a buzzer are provided above the touch screen, and a power switch, an emergency stop switch and a reset switch are provided below the touch screen respectively. The touch screen, power indicator light, product test OK indicator light, product test NG indicator light, buzzer, power switch, emergency stop switch and reset switch are all connected to the PLC logic control circuit.

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