Wire harness testing device

Abstract

The invention relates to the technical field of wire harness testing, and discloses a wire harness testing device which comprises a testing station, a testing box is arranged at the top of the testing station, when a wire harness is subjected to power-on testing in an extreme environment, a surface body of the wire harness expands or contracts, at the moment, an abutting block acting on the surface of the wire harness pushes a supporting rod to move, and the testing box is used for testing the surface body of the wire harness. At the moment, the contact piece of the supporting rod can move below the detection plate, the multiple contacts are resistors with resistance values continuously increased in the clockwise direction, when the contact piece makes contact with the different contacts, a PLC in the test box can detect the change of the resistance values, and then the expansion or contraction degree of the wiring harness can be judged. Due to the fact that the wire harness tool is provided with the multiple sets of abutting blocks and the detection plates, multiple point positions of the wire harnesses can be tested at the same time, the wire roller does not need to be manually and repeatedly taken out from the high-temperature or low-temperature environment, the test point positions do not need to be replaced, and the test efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of wire harness testing, in particular to a wire harness testing device. Background Art

[0002] Wire harness testing is a test method used to evaluate the performance and quality of electrical wire harnesses. The purpose of wire harness testing is to ensure that the wire harness meets the design requirements and relevant standards in terms of electrical performance, reliability and safety. Through testing, potential problems in the wire harness can be discovered and repaired or improved in a timely manner to improve product quality and reliability.

[0003] At present, in the production process of wire harnesses, due to problems such as process structure or material anisotropy, the shielding layer and insulation layer of the wire harnesses have problems such as cell eccentricity or bubbles, which causes the wire harnesses to expand and rupture in high or low temperature environments, so testing is required; However, in order to perform multi-point testing on the entire bundle of wire harnesses, it is usually necessary to manually remove the wire roll from a high temperature or low temperature environment and replace the test points repeatedly, which reduces the testing efficiency. Summary of the invention

[0004] The object of the present invention is to provide a wire harness testing device, aiming to solve the problem of low efficiency of existing wire harness testing.

[0005] The present invention is implemented as follows: a wire harness testing device comprises a testing station, a test box is arranged on the top of the testing station, a test track is also arranged through the testing station, a plurality of wire harness toolings are guided on the test track, the wire harness toolings comprise a guide seat, a wire harness is fixed on the guide seat, and the test track sequentially transports the wire harnesses into the testing station and sends the wire harnesses into the test box for testing operation; The wiring harness tooling is provided with a test assembly and two sets of outer clamping plates, the test assembly includes a support tube, both sides of the support tube are connected with a plurality of arc-shaped support rods through a spring shaft, the end rotating shaft of the support rod is connected with a stop block, and the support tube is provided with a detection plate at a corresponding position near the top of the support rod, the outer clamping plates cooperate with the stop blocks to clamp and fix the wiring harness, and the expansion of the wiring harness is tested by detecting the distance between the stop block and the outer clamping plates through the detection plate.

[0006] Preferably, the test station is located at a corresponding position below the test box and is connected to two guide rods with bearings. A lifting motor is also installed in the test station. The lifting motor drives the two guide rods to rotate synchronously through a belt. The external threads of the two guide rods are connected to a synchronously lifting top block.

[0007] Preferably, a conveyor belt is provided on the inspection track, and a plurality of limit blocks are evenly distributed on the conveyor belt; Top grooves are provided below both ends of the guide seat, and both sides of the end of the guide seat are mounted between two limit blocks, and the height of the top groove is consistent with the height of the top block.

[0008] Preferably, the inner bearing of the guide seat is connected to a rotating rod, the inner bearing of the support tube is connected to an adjusting rod, and the adjusting rod is transmission-connected to the middle part of the rotating rod through a bevel gear; The surfaces of both ends of the rotating rod are respectively provided with a forward thread and a reverse thread, and the two ends of the rotating rod are respectively connected with a slider through the forward thread and the reverse thread, and the two outer clamping plates are respectively connected through the slider.

[0009] Preferably, both ends of the wiring harness are equipped with connection terminals; Two groups of U-shaped power-carrying frames are arranged on the top of the guide seat, and a slide groove is opened between the two vertical parts of the power-carrying frames. The two power-carrying frames are respectively slidably installed with conductive slide plates for plugging the two connecting terminals through the slide grooves of the two vertical parts.

[0010] Preferably, the conductive slide plate is a conductive member, and a conductive sheet is laid on the inner wall of the slide groove of the power-on frame. The conductive sheet penetrates and extends to the top of one of the vertical parts of the power-on frame, and a contact sheet is arranged at the end of the conductive sheet.

[0011] Preferably, the bottom of the detection plate is provided with contacts distributed in an annular shape, and the top of the support rod is provided with contact sheets corresponding to the contacts.

[0012] Preferably, the top bearing of the support tube is connected with an assembly ring, connecting rods are arranged on both sides of the assembly ring, and a lever arranged vertically downward is installed at the end of the connecting rod; The inner wall of the end of the support tube and the outside of the assembly ring are both embedded with mutually meshing frustration blocks, and the material of the frustration blocks is hard silicone.

[0013] Preferably, The invention discloses a wiring harness testing device having the following beneficial effects: 1. During use of this embodiment, after adjusting the distance between the outer clamping plates according to the specifications of the wiring harness, the assembly ring is rotated to assemble the wiring harness on the wiring harness tooling, and after the wiring terminals of the wiring harness are inserted into the two conductive slides of the wiring harness tooling, the wiring harness is sent to the bottom of the test box by the inspection track, and the wiring harness is sent to the test box by the lifting motor to be powered on, and the use of the wiring harness in extreme environments such as high temperature, high pressure, and low temperature is simulated. After the wiring harness test is completed, the lifting motor can send the wiring harness back to the inspection track, and the next set of wiring harnesses can be sent to the test box for testing, with a high degree of automation; 2. When the wiring harness is undergoing power-on testing in extreme environments, the surface of the wiring harness expands or contracts. At this time, the block acting on the surface of the wiring harness will push the support rod to move. At this time, the contact piece of the support rod will move under the detection plate. Several contacts are resistors that continuously increase their resistance in a clockwise direction. When the contact piece comes into contact with different contacts, the PLC in the test box can detect the change in resistance, and then determine the degree of expansion or contraction of the wiring harness, thereby determining the quality of the batch of wiring harnesses. Since there are several groups of blocks and detection plates on the wiring harness tooling, multiple points of the wiring harness can be tested simultaneously. There is no need to manually remove the wire roller from a high or low temperature environment and replace the test points repeatedly, which greatly improves the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of a wiring harness testing device provided by an embodiment of the present invention; Figure 2 It is a bottom view structural diagram of a detection box of a wiring harness testing device provided by an embodiment of the present invention; Figure 3 It is a schematic diagram of a wiring harness tooling structure of a wiring harness testing device provided by an embodiment of the present invention; Figure 4 A wiring harness testing device provided by an embodiment of the present invention Figure 3 Schematic diagram of the structure from top view; Figure 5 A wiring harness testing device provided by an embodiment of the present invention Figure 4 Schematic diagram of the AA section structure along the arrow direction; Figure 6 A wiring harness testing device provided by an embodiment of the present invention Figure 5 A partial enlarged schematic diagram of point B in the middle; Figure 7 A wiring harness testing device provided by an embodiment of the present invention Figure 3 Schematic diagram of the structure viewed from above; Figure 8 A wiring harness testing device provided by an embodiment of the present invention Figure 7 A partial enlarged schematic diagram of point C in the middle.

[0015] Marking Description: 1. Test station; 2. Test box; 3. Inspection track; 4. Wire harness tooling; 5. Wire harness; 11. Lifting motor; 12. Guide rod; 13. Lifting block; 31. Conveyor belt; 32. Limit block; 41. Guide seat; 42. Power-on rack; 43. Test assembly; 44. External clamping plate; 411, top slot; 421, chute; 422, conductive sheet; 423, conductive slide plate; 424, electric contact sheet; 431, support tube; 432, assembly ring; 433, connecting rod; 434, lever; 435, detection plate; 436, spring shaft; 437, stop block; 4321, setback block; 4351, contact point; 4361, support rod; 4362, contact piece; 441, slider; 442, adjustment rod; 443, rotating rod; 51. Terminal blocks. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0018] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0019] In this embodiment: Reference Figure 1 As shown, a preferred embodiment of the present invention is provided.

[0020] The wire harness testing device of this embodiment includes a testing station 1, a test box 2 is arranged on the top of the testing station 1, and a test track 3 is also arranged in the testing station 1. A plurality of wire harness tooling 4 are guided on the test track 3. The wire harness tooling 4 includes a guide seat 41, and a wire harness 5 is fixed on the guide seat 41. The test track 3 sequentially transports the wire harness 5 into the testing station 1 and sends the wire harness 5 into the test box 2 for testing operation; The harness tooling 4 is provided with a test component 43 and two sets of outer clamping plates 44, the test component 43 includes a support tube 431, both sides of the support tube 431 are connected with a plurality of arc-shaped support rods 4361 through a spring shaft 436, the end shafts of the support rods 4361 are connected with a stop block 437, and the support tube 431 is provided with a detection plate 435 at a corresponding position near the top of the support rod 4361, the outer clamping plates 44 cooperate with the stop block 437 to clamp and fix the harness 5, and the detection plate 435 detects the distance between the stop block 437 and the outer clamping plates 44 to test the expansion of the harness 5.

[0021] See attached Figure 2 In the embodiment, the test station 1 is located at the lower part of the test box 2 and is connected to two guide rods 12 at the corresponding bearings. A lifting motor 11 is also installed in the test station 1. The lifting motor 11 drives the two guide rods 12 to rotate synchronously through a belt. The external threads of the two guide rods 12 are connected to a synchronously lifted top block 13. A conveying belt 31 is provided on the inspection track 3. A plurality of limit blocks 32 are evenly distributed on the conveying belt 31. The conveying belt 31 pushes the guide seat 41 for transmission through the limit blocks 32. Top grooves 411 are provided below both ends of the guide seat 41. The ends of the guide seat 41 are arranged between the two limit blocks 32, and the height of the top groove 411 is the same as that of the test box 2. The height of the top block 13 is consistent. When the conveyor belt 31 pushes the guide seat 41 to be placed on the top block 13 through the limit block 32, the top block 13 is below the top groove 411 at the end of the guide seat 41. When the jacking motor 11 drives the guide rod 12 to rotate, the top block 13 will be pushed up through the thread on the surface of the guide rod 12, and then the wiring harness tooling 4 will be sent to the inside of the test box 2 for testing. After the wiring harness 5 on the wiring harness tooling 4 is tested, the top block 13 sinks to re-place the end of the guide seat 41 of the wiring harness tooling 4 between the limit blocks 32 of the conveyor belt 31, and the group of wiring harness tooling 4 continues to be conveyed, and the next group of wiring harness tooling 4 is sent to the top of the top block 13, so as to continuously perform testing.

[0022] In the attached Figure 5 In the figure, the internal bearing of the guide seat 41 is connected to a rotating rod 443, the internal bearing of the support tube 431 is connected to an adjusting rod 442, the adjusting rod 442 is transmission-connected to the middle part of the rotating rod 443 through a bevel gear, the two end surfaces of the rotating rod 443 are respectively provided with a forward thread and a reverse thread, the two ends of the rotating rod 443 are respectively connected to a slider 441 through a forward thread and a reverse thread, the two outer clamping plates 44 are respectively connected through the slider 441, after the wiring harness 5 to be tested is sleeved on the outside of the support tube 431, the rotating rod 443 is rotated to enable the slider 441 connected with the forward thread and the reverse thread at its two ends to realize reverse synchronous transmission, and then the outer clamping plates 44 are used to clamp the two sides of the wiring harness 5, so that the wiring harness 5 is centered and the forces on both sides are kept equal.

[0023] See attached Figure 4-6 In the process of assembling the wire harness 5, in order to facilitate the wire harness 5 to be sleeved on the outside of the support tube 431, the top bearing of the support tube 431 is connected with an assembly ring 432, and connecting rods 433 are arranged on both sides of the assembly ring 432. The end of the connecting rod 433 is installed with a lever 434 arranged vertically downward. The assembly ring 432 can be rotated to drive the lever 434 to rotate, and then the lever 434 is used to squeeze the support rod 4361, so that the block 437 moves toward the support tube 431, so that the wire harness 5 can be placed between the block 437 and the outer clamping plate 44; It is worth noting that the inner wall of the end of the support tube 431 and the outside of the assembly ring 432 are embedded with mutually meshing stop blocks 4321, and the material of the stop block 4321 is hard silicone, which makes the rotating assembly ring 432 have a certain stop feeling, so that when the assembly ring 432 is loosened, the stop block 437 will not be quickly reset due to the spring shaft 436 of the support rod 4361, and there is sufficient time to load and unload the wiring harness 5.

[0024] Among them, in the attached Figure 3 In the embodiment, both ends of the wiring harness 5 are equipped with wiring terminals 51, and two groups of U-shaped power-on frames 42 are arranged on the top of the guide seat 41. A slide groove 421 is provided between the two vertical parts of the power-on frame 42. The two power-on frames 42 are respectively slidably installed with conductive slide plates 423 for plugging the two wiring terminals 51 through the slide grooves 421 of the two vertical parts. The conductive slide plates 423 are conductive parts. The inner wall of the slide groove 421 of the power-on frame 42 is paved with a conductive sheet 422. The conductive sheet 422 penetrates and extends to the top of one of the vertical parts of the power-on frame 42, and the conductive sheet 422 is located at the end thereof. A contact sheet 424 is provided. In order to ensure that the wiring harness 5 is assembled on the wiring harness tooling 4 When the wiring harness 5 is sent into the test box 2 through the wiring harness tooling 4, the wiring harness 5 can be tested for power-on. Therefore, the wiring terminal 51 of the wiring harness 5 needs to be inserted into the conductive slide plate 423. Due to the different specifications of different wiring harnesses 5, the heights and spacings of the two wiring terminals 51 are different after the wiring harness 5 is rolled up and fixed. Therefore, the height of the conductive slide plate 423 can be slid through the slide groove 421 of the power-on rack 42, and a strip-shaped slot is provided inside the conductive slide plate 423, so it can adapt to the position of the wiring terminal 51, so that the wiring harness 5 entering the test box 2 can be conveniently connected through the wiring terminal 51, the conductive slide plate 423, the conductive sheet 422 and the electric contact sheet 424 to conduct the circuit, which is convenient for the power-on test operation of the wiring harness 5.

[0025] It is worth noting that in the attached Figure 7-8In the test, the bottom of the detection plate 435 is provided with a ring-shaped contact 4351, and the top of the support rod 4361 is provided with a contact piece 4362 corresponding to the contact 4351. When the wiring harness 5 is undergoing a power-on test in an extreme environment, the surface of the wiring harness 5 expands or contracts. At this time, the block 437 acting on the surface of the wiring harness 5 will push the support rod 4361 to move. At this time, the contact piece 4362 of the support rod 4361 will move under the detection plate 435. Several contacts 4351 are resistors that continuously increase their resistance in a clockwise direction. When the contact piece 4362 comes into contact with different contacts 4351, the PLC in the test box 2 can detect the change in resistance, and then can judge the degree of expansion or contraction of the wiring harness 5, thereby judging the quality of the wiring harness 5 of this batch.

[0026] During use of this embodiment, after adjusting the spacing of the outer clamping plates 44 according to the specifications of the wiring harness 5, the assembly ring 432 is rotated to assemble the wiring harness 5 on the wiring harness fixture 4, and after the wiring terminals 51 of the wiring harness 5 are inserted into the two conductive slides 423 of the wiring harness fixture 4, the wiring harness 5 is sent to the bottom of the test box 2 by the inspection track 3, and the wiring harness 5 is sent to the test box 2 by the lifting motor 11 to be powered on, and high temperature, high pressure, low temperature and other extreme environments are simulated. After the wiring harness 5 is tested, the lifting motor 11 can send the wiring harness 5 back to the inspection track 3, and send the next group of wiring harnesses 5 into the test box 2 for testing, with a high degree of automation; When the wiring harness 5 is undergoing power-on testing in extreme environments, the surface of the wiring harness 5 expands or contracts. At this time, the stopper 437 acting on the surface of the wiring harness 5 will push the support rod 4361 to move. At this time, the contact piece 4362 of the support rod 4361 will move under the detection plate 435. Several contacts 4351 are resistors that continuously increase their resistance in a clockwise direction. When the contact piece 4362 comes into contact with different contacts 4351, the PLC in the test box 2 can detect the change in resistance, and then determine the degree of expansion or contraction of the wiring harness 5, thereby determining the quality of the batch of wiring harnesses 5. Since there are several groups of stoppers 437 and detection plates 435 on the wiring harness tooling 4, multiple points of the wiring harness 5 can be tested simultaneously, without the need to manually remove the wire roller from a high or low temperature environment and replace the test points repeatedly, thereby greatly improving the test efficiency.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wiring harness testing device, characterized in that: It includes a test station, a test box is arranged on the top of the test station, and a test track is also arranged through the test station. A plurality of wire harness tools are guided on the test track. The wire harness tools include a guide seat, and a wire harness is fixed on the guide seat. The test track sequentially transports the wire harness into the test station and sends the wire harness into the test box for testing operation; The wiring harness tooling is provided with a test assembly and two sets of outer clamping plates, the test assembly includes a support tube, both sides of the support tube are connected with a plurality of arc-shaped support rods through a spring shaft, the end rotating shaft of the support rod is connected with a stop block, and the support tube is provided with a detection plate at a corresponding position near the top of the support rod, the outer clamping plates cooperate with the stop blocks to clamp and fix the wiring harness, and the expansion of the wiring harness is tested by detecting the distance between the stop block and the outer clamping plates through the detection plate.

2. A wire harness testing device as claimed in claim 1, characterized in that: The test station is located at the corresponding position below the test box and is connected to two guide rods with bearings. A lifting motor is also installed in the test station. The lifting motor drives the two guide rods to rotate synchronously through a belt. The external threads of the two guide rods are connected to a synchronously lifting top block.

3. A wire harness testing device as claimed in claim 2, characterized in that: A conveyor belt is arranged on the inspection track, and a plurality of limit blocks are evenly distributed on the conveyor belt; Top grooves are provided below both ends of the guide seat, and both sides of the end of the guide seat are mounted between two limit blocks, and the height of the top groove is consistent with the height of the top block.

4. A wire harness testing device as claimed in claim 1, characterized in that: The inner bearing of the guide seat is connected with a rotating rod, the inner bearing of the support tube is connected with an adjusting rod, and the adjusting rod is transmission-connected with the middle part of the rotating rod through a bevel gear; The surfaces of both ends of the rotating rod are respectively provided with a forward thread and a reverse thread, and the two ends of the rotating rod are respectively connected with a slider through the forward thread and the reverse thread, and the two outer clamping plates are respectively connected through the slider.

5. A wire harness testing device as claimed in claim 1, characterized in that: Both ends of the wiring harness are equipped with wiring terminals; Two groups of U-shaped power-carrying frames are arranged on the top of the guide seat, and a slide groove is opened between the two vertical parts of the power-carrying frames. The two power-carrying frames are respectively slidably installed with conductive slide plates for plugging the two connecting terminals through the slide grooves of the two vertical parts.

6. A wire harness testing device as claimed in claim 5, characterized in that: The conductive slide plate is a conductive member, and the inner wall of the slide groove of the power-on frame is paved with a conductive sheet, which penetrates and extends to the top of one of the vertical parts of the power-on frame, and a contact sheet is arranged at the end of the conductive sheet.

7. A wire harness testing device as claimed in claim 1, characterized in that: The bottom of the detection plate is provided with contact points distributed in an annular pattern, and the top of the support rod is provided with contact sheets corresponding to the contact points.

8. A wire harness testing device as claimed in claim 1, characterized in that: The top bearing of the support tube is connected with an assembly ring, and connecting rods are arranged on both sides of the assembly ring, and the ends of the connecting rods are installed with levers arranged vertically downward; The inner wall of the end of the support tube and the outside of the assembly ring are both embedded with mutually meshing frustration blocks, and the material of the frustration blocks is hard silicone.

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