Wire harness sealing line detection device and method

Abstract

The invention relates to the technical field of sealing line detection, and discloses a wire harness sealing line detection device and method.The wire harness sealing line detection device comprises a detection base, detection grooves are formed in the two sides of the top of the detection base, lower clamping grooves are formed in the front ends of the detection grooves, and the wire harness sealing line detection device further comprises two sealing plates; the two sides of the top of the detection seat are fixedly connected with guide rod groups, the two groups of sealing plates are slidably connected to the guide rod groups on the two sides in a sleeving manner, the top of the detection seat is fixedly connected with a mounting frame, and the top of the mounting frame is provided with a lifting part for alternately lifting the sealing plates on the two sides; in the detection process, the end part of the sample is pulled to swing in a reciprocating manner, and a vibration effect is generated below the fixed position of the black rubber ring, so that mechanical disturbance under a real working condition is simulated, and potential leakage risks which cannot be detected by a static test can be conveniently found; the reliability and integrity of the black rubber ring under the complex vibration stress condition can be verified more truly and strictly, and the accuracy of the detection result is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of sealing line detection technology, specifically to a device and method for detecting sealing lines in wire harnesses. Background Technology

[0002] With the rapid development of automobiles, rail transportation, new energy equipment and industrial automation, wire harnesses, as the key carriers of signal and power transmission in electrical systems, have their connection parts' sealing reliability directly related to the safety and service life of the entire equipment. Therefore, high-precision and high-reliability sealing tests on the black rubber rings used at wire harness connections have become an indispensable quality control step before products leave the factory.

[0003] Currently, the industry generally uses static airtightness testing methods to verify the sealing performance of wire harness connectors. These methods typically involve sealing the sample in a fixed fixture and then applying a certain pressure or vacuum. The sealing effect is judged by monitoring pressure changes or observing leakage phenomena.

[0004] However, in actual use, such as during vehicle operation, factors such as engine vibration, road bumps, steering operations, and thermal expansion and contraction can cause the wiring harness to continuously bend, stretch, twist, and vibrate at high frequency, thus forming leakage channels that are difficult to detect under static conditions. Traditional static testing can only reflect the sealing capability under ideal assembly conditions and cannot effectively simulate the complex mechanical disturbance environment that the wiring harness is subjected to during actual use, thus reducing the accuracy of the final test. Summary of the Invention

[0005] This invention provides a wire harness sealing wire detection device and method that simulates mechanical disturbances under real working conditions, thereby facilitating the discovery of potential leakage risks that static tests cannot detect. It also provides a more realistic and rigorous verification of the reliability and integrity of the black rubber ring under complex vibration stress conditions. This solves the problem mentioned in the background art that traditional static tests cannot effectively simulate the complex mechanical disturbance environment that wire harnesses are subjected to during actual use, thus leading to a reduction in the accuracy of the final detection.

[0006] This invention provides the following technical solution: A wire harness sealing wire testing device includes a testing base with testing grooves on both sides of the top of the testing base and a lower retaining groove at the front end of each testing groove. It also includes: two sets of sealing plates; guide rod assemblies are fixedly connected to both sides of the top of the testing base; the two sets of sealing plates are slidably sleeved on the guide rod assemblies; a mounting frame is fixedly connected to the top of the testing base; and a lifting part for alternately raising and lowering the sealing plates on both sides is provided on the top of the mounting frame; a clamping plate rotatably connected within the testing grooves; and a driving part for reciprocating rotation of the clamping plate within the testing base; and a vibration part disposed within the testing base to simulate a vibration environment during testing.

[0007] As a preferred embodiment of the present invention, the bottom of the sealing plate is provided with an air guide groove, the air guide groove is aligned vertically with the detection groove and is the same size, the front end of the air guide groove is provided with an upper retaining groove, the bottom of the sealing plate is fixedly connected with a sealing gasket, the sealing gasket is wrapped around the port of the air guide groove, a negative pressure pump is fixedly connected to the mounting bracket, both sides of the negative pressure pump are fixed and connected to air extraction pipes, the other ends of the two sets of air extraction pipes are respectively connected to the inner cavity of the two air guide grooves, and a solenoid valve is provided on the air extraction pipe.

[0008] As a preferred embodiment of the present invention, the lifting part includes a pull rope, and limit guide wheels are fixedly connected to both sides of the inner top of the mounting frame. Pull rings are fixedly connected to the top of the two sets of sealing plates. The two ends of the pull rope pass through the limit guide wheels on both sides and are fixed to the top of the pull rings on both sides respectively. A pull plate is fixedly connected to the middle of the pull rope. An electric cylinder is fixedly connected to the mounting frame, and the telescopic end of the electric cylinder is fixedly connected to the side wall of the pull plate.

[0009] As a preferred embodiment of the present invention, the clamping disk has a wire clamping groove on the top, and airbags are fixedly connected to both sides of the inner cavity of the wire clamping groove. The driving part includes a friction wheel, and a linkage groove is provided at the bottom of each set of detection grooves. The friction wheel is rotatably connected in the linkage groove, and the top of the friction wheel is in contact with the bottom of the clamping disk.

[0010] As a preferred embodiment of the present invention, a drive groove is provided inside the detection seat, and multiple sets of limiting rods are symmetrically installed in the drive groove. A reciprocating gear ring is slidably connected between the multiple sets of limiting rods. A drive rack is fixedly connected to both sides of the reciprocating gear ring. The rotating shaft of the friction wheel passes through the drive groove and is fixedly connected to a driven gear. The driven gear is meshed with the drive rack. A drive motor is fixedly connected to the side wall of the detection seat. The rotating shaft of the drive motor passes through the drive groove and is fixedly connected to an incomplete gear. The incomplete gear meshes with the teeth of the upper and lower layers of the inner ring of the reciprocating gear ring.

[0011] As a preferred embodiment of the present invention, the vibration part includes an impact rod, and a vibration groove is provided in the detection seat located below the lower slot. A spring telescopic rod is fixedly connected to the top of the inner cavity of the vibration groove, and the impact rod is fixedly connected to the bottom of the telescopic end of the spring telescopic rod. Piston plates are slidably connected to both sides of the inner cavity of the drive groove. The side wall of the piston plate is fixedly connected to the end of the drive rack, and the piston plate and the drive groove form an inflation cavity. The inflation cavity is connected to the upper cavity of the spring telescopic rod through an air guide pipe.

[0012] As a preferred embodiment of the present invention, the bottom of the vibration groove is provided with a ventilation groove, the bottom of the impact rod is fixedly connected with an exhaust pipe, the extension part of the spring telescopic rod is provided with an exhaust groove, the top of the exhaust groove is connected to the upper cavity of the spring telescopic rod, the bottom end of the exhaust groove passes through the impact rod and is connected to the top end of the exhaust pipe, and a pressure valve is provided in the exhaust pipe.

[0013] As a preferred embodiment of the present invention, the pressure at which the pressure valve opens is greater than the thrust required for the spring telescopic rod to extend, and the pressure at which the pressure valve opens is less than the thrust required for the driven gear and the drive rack to mesh and rotate.

[0014] As a preferred embodiment of the present invention, a pressure detector is fixedly connected to the top of the sealing plate, the detection end of the pressure detector extends through into the air guide groove, the top of the air guide groove is fixed and connected to a pressure relief pipe, and a solenoid valve is provided on the pressure relief pipe. A controller is fixedly connected to the mounting bracket, and the controller is electrically connected to the pressure detector, the solenoid valve in the pressure relief pipe, the solenoid valve in the suction pipe, the negative pressure pump, and the electric cylinder.

[0015] A method for detecting the sealing wire of a wire harness, comprising the following steps: Step 1: First, insert the black rubber ring of the wire harness sealing wire sample into the lower slot, and then fix one end of the sample to the clamping plate. Step 2: Next, lower the sealing plate so that it fits against the detection seat; Step 3: Extract the gas from the test tank and perform an airtightness test on the black rubber ring; Step 4: During the testing process, the wire harness sealing line is moved back and forth, and vibration is generated at the bottom of the lower slot to simulate a real usage scenario; Step 5: Release the negative pressure, lift the sealing plate to remove the tested sample, and put the untested sample back in. Then repeat the above steps to carry out a new round of testing.

[0016] Compared with the prior art, the present invention provides a device and method for detecting wire harness sealing lines, which has the following beneficial effects: 1. This wire harness sealing line testing device simulates mechanical disturbances under real working conditions by pulling the end of the sample back and forth during the testing process and generating vibration below the fixed position of the black rubber ring. This facilitates the discovery of potential leakage risks that cannot be detected by static testing, and more realistically and rigorously verifies the reliability and integrity of the black rubber ring under complex vibration stress conditions, effectively improving the accuracy of the test results.

[0017] 2. This wire harness sealing line inspection device, through the cooperation of an electric cylinder and a pull rope, can realize the alternating lifting and lowering of the sealing plates on both sides. That is, while one side is being inspected, the other side can be unloaded and reloaded, thus enabling simultaneous dual-station inspection work and effectively improving inspection efficiency.

[0018] 3. This wire harness sealing line testing device, through negative pressure testing, firstly ensures a tighter fit between the testing seat and the sealing plate, guaranteeing the sealing performance of the test and improving the accuracy of the test results; secondly, it can simultaneously test the sealing performance and pressure resistance of the sample's black rubber ring, thereby effectively improving the testing efficiency. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0020] Figure 1 This is a first-view perspective stereoscopic diagram of the present invention; Figure 2 This is a second-view perspective stereoscopic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the sealing plate of the present invention; Figure 4 This is a schematic diagram of the inside of the vibration groove of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of region A in the middle; Figure 6 This is a schematic diagram of the interior of the drive slot of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram of region B in the middle; Figure 8 This is a partial cross-sectional schematic diagram of the detection seat of the present invention.

[0021] In the diagram: 1. Detection seat; 2. Detection slot; 21. Lower slot; 22. Mounting bracket; 3. Sealing plate; 31. Guide rod assembly; 32. Air guide groove; 33. Upper slot; 34. Sealing gasket; 35. Negative pressure pump; 351. Suction pipe; 4. Clamping plate; 41. Wire clamping groove; 42. Airbag; 5. Pull rope; 51. Limiting guide wheel; 52. Pull ring; 53. Pull plate; 54. Electric cylinder; 6. Friction wheel; 61. Linkage 62. Moving groove; 621. Driving groove; 63. Limiting rod; 64. Reciprocating gear ring; 65. Driving rack; 66. Driven gear; 77. Drive motor; 68. Incomplete gear; 79. Impact rod; 70. Vibration groove; 71. Spring telescopic rod; 72. Exhaust groove; 73. Piston plate; 74. Air guide pipe; 75. Ventilation groove; 76. Exhaust pipe; 80. Air pressure detector; 81. Pressure relief pipe; 82. Controller. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1: Reference Figures 1-8 A wire harness sealing wire testing device includes a testing base 1, with testing grooves 2 on both sides of the top of the testing base 1, and a lower retaining groove 21 at the front end of the testing groove 2. It also includes: two sets of sealing plates 3, with guide rod assemblies 31 fixedly connected to both sides of the top of the testing base 1, and the two sets of sealing plates 3 slidably sleeved on the guide rod assemblies 31. A mounting frame 22 is fixedly connected to the top of the testing base 1, and the top of the mounting frame 22 is provided with a lifting part for alternately lifting the sealing plates 3 on both sides; a clamping plate 4, rotatably connected to the testing grooves 2, and a driving part for reciprocating rotation of the clamping plate 4 is provided inside the testing base 1; and a vibration part, disposed inside the testing base 1, used to simulate a vibration environment during testing.

[0024] Reference Figures 1-5The bottom of the sealing plate 3 is provided with an air guide groove 32, which is aligned vertically with the detection groove 2 and is the same size. The front end of the air guide groove 32 is provided with an upper slot 33. The bottom of the sealing plate 3 is fixedly connected with a sealing gasket 34, which wraps around the port of the air guide groove 32. A negative pressure pump 35 is fixedly connected to the mounting bracket 22. Both sides of the negative pressure pump 35 are fixed and connected to a suction pipe 351. The other ends of the two suction pipes 351 are respectively connected to the inner cavity of the air guide grooves 32 on both sides, and a solenoid valve is provided on the suction pipe 351. The lifting unit includes a pull rope 5. Limiting guide wheels 51 are fixedly connected to both sides of the inner top of the mounting frame 22. Pull rings 52 are fixedly connected to the top of the two sets of sealing plates 3. The two ends of the pull rope 5 pass through the limiting guide wheels 51 on both sides and are fixed to the top of the pull rings 52 on both sides respectively. A pull plate 53 is fixedly connected to the middle of the pull rope 5. An electric cylinder 54 is fixedly connected to the mounting frame 22. The telescopic end of the electric cylinder 54 is fixedly connected to the side wall of the pull plate 53. A wire clamping groove 41 is opened on the top of the clamping plate 41. Airbags 42 are fixedly connected to both sides of the inner cavity of the wire clamping groove 41.

[0025] With the above structure, when in use, first insert the black rubber ring of the wire harness sealing wire sample into the lower slot 21, then insert one end of the sample into the space between the two airbags 42 in the wire clamping groove 41, then turn on the electric cylinder 54 to move its telescopic end toward the side where the sample is installed, thereby pulling the pull rope 5, so that the sealing plate 3 above the sample slides down along the guide rod assembly 31 under the action of gravity and finally adheres to the top of the detection seat 1. At this time, the black rubber ring of the sample will be sealed and fixed between the lower slot 21 and the upper slot 33, and with the setting of the sealing gasket 34, the air guide groove 32 will also be sealed and connected with the detection groove 2 to form a detection cavity. Subsequently, the negative pressure pump 35 is turned on, and the solenoid valve installed in the air extraction pipe 351 on one side of the sample is opened. At this time, the gas in the detection chamber will be extracted, so that the detection chamber becomes a negative pressure state. Under the action of the external atmospheric pressure, the detection seat 1 and the sealing plate 3 will fit more tightly, thereby ensuring the sealing performance of the test and improving the accuracy of the test results. During the negative pressure extraction process, the reading of the air pressure detector 8 can be observed to determine whether it has reached the preset air pressure value. If it cannot reach the required air pressure threshold, it indicates that the black rubber ring of the sample has insufficient sealing performance, which means it is a defective product. If it can reach the required air pressure value, it indicates that the sealing performance of the black rubber ring meets the requirements, which means it is a qualified product.

[0026] In addition, under negative pressure, the air bladder 42 inside the wire clamping groove 41 will expand outward, thereby fixing the end of the wire harness more tightly between the two air bladders 42, improving the fixing strength of the wire harness in subsequent dynamic simulation.

[0027] In addition, during the negative pressure test, the pressure resistance of the black rubber ring of the sample can also be tested. That is, whether the black rubber ring of the sample will be damaged when the preset negative pressure value is reached. If it is damaged directly during the test, it means that its pressure resistance is insufficient. If it is intact after the test, it means that it meets the pressure resistance requirements.

[0028] In addition, the alternating lifting and lowering of the two sealing plates 3 can be achieved through the cooperation of the electric cylinder 54 and the pull rope 5. When one sealing plate 3 falls, the other sealing plate 3 will rise. That is, while one side is being tested, the other side can be unloaded and reloaded, thus enabling simultaneous dual-station testing and effectively improving testing efficiency.

[0029] Reference Figures 6-8 The drive unit includes a friction wheel 6. Each set of detection slots 2 has a linkage slot 61 at its bottom. The friction wheel 6 is rotatably connected in the linkage slot 61, and the top of the friction wheel 6 is in contact with the bottom of the clamping plate 4. The detection seat 1 has a drive slot 62. Multiple sets of limit rods 621 are symmetrically installed in the drive slot 62. A reciprocating gear ring 63 is slidably connected between the multiple sets of limit rods 621. A drive rack 631 is fixedly connected to both sides of the reciprocating gear ring 63. The rotating shaft of the friction wheel 6 passes through the drive slot 62 and is fixedly connected to the driven gear 632. The driven gear 632 is meshed with the drive rack 631. A drive motor 64 is fixedly connected to the side wall of the detection seat 1. The rotating shaft of the drive motor 64 passes through the drive slot 62 and is fixedly connected to the incomplete gear 641. The incomplete gear 641 meshes with the teeth of the upper and lower layers of the inner ring of the reciprocating gear ring 63.

[0030] With the above structure, during the negative pressure extraction process, the drive motor 64 is turned on, causing the incomplete gear 641 to rotate. When the incomplete gear 641 meshes with the upper teeth of the reciprocating gear ring 63, it pushes the reciprocating gear ring 63 to slide to one side along the limit rod 621. When the incomplete gear 641 meshes with the lower teeth of the reciprocating gear ring 63, it pushes the reciprocating gear ring 63 to slide to the other side along the limit rod 621, thus realizing the reciprocating translation of the reciprocating gear ring 63. In conjunction with the driven gear 632 and the drive rack 631, it continuously drives the friction wheels 6 on both sides to rotate back and forth. At this time, the friction between the friction wheels 6 and the clamping plate 4 will synchronously drive the clamping plate 4 to rotate back and forth, thereby pulling the end of the sample to swing back and forth, thus simulating the mechanical disturbance under real working conditions. This makes it easier to identify potential leakage risks caused by poor assembly, material defects, or insufficient structural design, ensuring that the product still has reliable sealing performance under complex working conditions, thereby improving the accuracy of the test results.

[0031] Reference Figures 4-8The vibrating part includes an impact rod 7. A vibration groove 71 is provided in the detection seat 1 located below the lower slot 21. A spring telescopic rod 72 is fixedly connected to the top of the inner cavity of the vibration groove 71. The impact rod 7 is fixedly connected to the bottom of the telescopic end of the spring telescopic rod 72. Piston plates 73 are slidably connected to both sides of the inner cavity of the drive groove 62. The side wall of the piston plate 73 is fixedly connected to the end of the drive rack 631. The piston plate 73 and the drive groove 62 form an inflation chamber. The inflation chamber is connected to the upper cavity of the spring telescopic rod 72 through a vent pipe 74. A venting groove 75 is provided at the bottom of the vibration groove 71. An exhaust pipe 76 is fixedly connected to the bottom of the impact rod 7. An exhaust groove 721 is provided in the telescopic part of the spring telescopic rod 72. The top of the exhaust groove 721 is connected to the upper cavity of the spring telescopic rod 72. The bottom end of the exhaust groove 721 passes through the impact rod 7 and is connected to the top of the exhaust pipe 76. A pressure valve is provided in the exhaust pipe 76.

[0032] Through the above structure, during the reciprocating sliding of the drive rack 631, the piston plate 73 will also slide within the drive groove 62, thereby alternately generating suction and thrust within the inflation chamber. During the thrust, the gas within the inflation chamber will be compressed, causing the gas to flow along the air guide pipe 74 into the spring telescopic rod 72. At this time, the telescopic end of the spring telescopic rod 72 will push the impact rod 7 downward, entering a storage state. When the spring telescopic rod 72 reaches the opening threshold of the pressure valve, the pressure valve in the exhaust pipe 76 will open, and the gas within the spring telescopic rod 72 will quickly flow out along the exhaust pipe 76. Under the rebound action of the spring telescopic rod 72, the impact rod 7 will quickly reset and impact the top of the vibration groove 71, thereby generating vibration below the fixed position of the sample black rubber ring. This more realistically and rigorously verifies the reliability and integrity of the black rubber ring under complex vibration stress conditions, further discovering potential leakage risks that cannot be detected by static testing, and improving the accuracy of the test results.

[0033] It should be noted that the pressure valve adopts a delayed closing design. That is, after the high-pressure gas in the spring telescopic rod 72 is discharged, the pressure valve will close again after a certain period of time. During this period, the suction force generated in the inflation chamber will draw the discharged gas back into the inflation chamber to generate continuous vibration.

[0034] In addition, the pressure required for the pressure valve to open is greater than the thrust required for the spring telescopic rod 72 to extend, and the pressure required for the pressure valve to open is less than the thrust required for the driven gear 632 to mesh and rotate with the drive rack 631. This setting ensures that the high-pressure gas pressed into the spring telescopic rod 72 will not push the piston plate 73 to slide in the opposite direction when the incomplete gear 641 disengages from the reciprocating gear ring 63.

[0035] Reference Figures 1-3A pressure detector 8 is fixedly connected to the top of the sealing plate 3. The detection end of the pressure detector 8 extends through into the air guide groove 32. The top of the air guide groove 32 is fixed and connected to a pressure relief pipe 81, and a solenoid valve is installed on the pressure relief pipe 81. A controller 82 is fixedly connected to the mounting bracket 22. The controller 82 is electrically connected to the pressure detector 8, the solenoid valve in the pressure relief pipe 81, the solenoid valve in the suction pipe 351, the negative pressure pump 35, and the electric cylinder 54. The above-mentioned electrical components are connected by existing mature signal control technology. The specific principle will not be described in detail. As such, the above configuration can facilitate the detection work and effectively improve the detection efficiency.

[0036] Example 2: Reference Figures 1-8 This method is basically the same as Example 1, but based on Example 1, a method for detecting the sealing wire of a wire harness is proposed, comprising the following steps: Step 1: First, insert the black rubber ring of the wire harness sealing wire sample into the lower slot 21, and then fix one end of the sample to the clamping plate 4. Step 2: Next, lower the sealing plate 3 so that it fits against the detection seat 1; Step 3: Extract the gas from test tank 2 and perform an airtightness test on the black rubber ring; Step 4: During the testing process, the wire harness sealing line is moved back and forth, and vibration is generated at the bottom of the lower slot 21 to simulate a real usage scenario. Step 5: Release the negative pressure, lift the sealing plate 3 to remove the tested sample, and put the untested sample back in. Then repeat the above steps to carry out a new round of testing.

[0037] Reference Figures 1-8In this invention, when in use, first insert the black rubber ring of the wire harness sealing wire sample into the lower slot 21, then insert one end of the sample into the space between the two airbags 42 in the wire clamping groove 41, then turn on the electric cylinder 54 to move its telescopic end toward the side where the sample is installed, thereby pulling the pull rope 5, so that the sealing plate 3 above the sample slides down along the guide rod assembly 31 under the action of gravity and finally adheres to the top of the detection seat 1. At this time, the black rubber ring of the sample will be sealed and fixed between the lower slot 21 and the upper slot 33, and with the setting of the sealing gasket 34, the air guide groove 32 will also be sealed and connected with the detection groove 2 to form a detection cavity. Then, the negative pressure pump 35 is turned on, and the solenoid valve installed in the suction pipe 351 on one side of the sample is opened. At this time, the gas in the detection chamber will be extracted, so that the detection chamber becomes negative pressure. Under the action of the external atmospheric pressure, the detection seat 1 and the sealing plate 3 will fit more tightly, thereby ensuring the sealing of the test and improving the accuracy of the test results. During the negative pressure extraction process, the reading of the air pressure detector 8 can be observed to determine whether it has reached the preset air pressure value. If it cannot reach the required air pressure threshold, it means that the black rubber ring of the sample has insufficient sealing, which is a defective product. If it can reach the required air pressure, it means that the sealing performance of the black rubber ring meets the requirements, which is a qualified product. Finally, the solenoid valve in the pressure relief pipe 81 is opened to release the negative pressure state. Then the sealing plate 3 is lifted, a new sample is replaced, and a new round of testing is carried out.

[0038] During the negative pressure extraction process, the drive motor 64 is turned on, causing the incomplete gear 641 to rotate. When the incomplete gear 641 meshes with the upper teeth of the reciprocating gear ring 63, it pushes the reciprocating gear ring 63 to slide to one side along the limiting rod 621. When the incomplete gear 641 meshes with the lower teeth of the reciprocating gear ring 63, it pushes the reciprocating gear ring 63 to slide to the other side along the limiting rod 621, thus realizing the reciprocating translation of the reciprocating gear ring 63. Combined with the driven gear 632 and the drive rack 631, this continuously drives the friction wheels 6 on both sides to rotate reciprocally. At this time, the friction between the friction wheels 6 and the clamping plate 4 synchronously drives the clamping plate 4 to rotate reciprocally, thereby pulling the end of the sample to swing back and forth. In addition, during the reciprocating sliding of the drive rack 631, it also drives the piston plate 73 to slide within the drive groove 62, thus alternately generating suction and thrust within the inflation chamber. During the thrusting process, the gas in the inflation chamber is compressed, and the gas is fed into the spring telescopic rod 72 along the air guide tube 74. At this time, the telescopic end of the spring telescopic rod 72 pushes the impact rod 7 downward to enter the storage state. When the spring telescopic rod 72 reaches the opening threshold of the pressure valve, the pressure valve in the exhaust pipe 76 will open. At this time, the gas in the spring telescopic rod 72 will flow out quickly along the exhaust pipe 76. Under the rebound action of the spring telescopic rod 72, the impact rod 7 will quickly reset and impact the top of the vibration groove 71, thereby generating a vibration below the fixed position of the black rubber ring of the sample. Through the above two methods, dynamic mechanical stress is introduced into the sealing test to simulate the real use environment, thereby more realistically and rigorously verifying the reliability and integrity of the black rubber ring under shaking and vibration conditions, and discovering potential leakage risks that cannot be detected by static testing, thus improving the accuracy of the test results.

[0039] Components not described in detail in this article are existing technologies.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wire harness sealing wire detection device, comprising a detection base (1), characterized in that, The detection seat (1) has detection slots (2) on both sides of its top, and the front end of the detection slot (2) has a lower retaining slot (21). It also includes: Two sets of sealing plates (3) are provided. Guide rod groups (31) are fixedly connected to both sides of the top of the detection seat (1). The two sets of sealing plates (3) are slidably sleeved on the guide rod groups (31) on both sides. The top of the detection seat (1) is fixedly connected to a mounting frame (22), and the top of the mounting frame (22) is provided with a lifting part for the alternating lifting of the two side sealing plates (3); The clamping disk (4) is rotatably connected to the detection groove (2), and the detection seat (1) is provided with a drive unit that drives the clamping disk (4) to reciprocate. The vibration part is disposed inside the detection seat (1) and is used to simulate a vibration environment during detection.

2. The wire harness sealing wire detection device according to claim 1, characterized in that, The bottom of the sealing plate (3) is provided with an air guide groove (32). The air guide groove (32) is aligned vertically with the detection groove (2) and is the same size. The front end of the air guide groove (32) is provided with an upper slot (33). The bottom of the sealing plate (3) is fixedly connected with a sealing gasket (34). The sealing gasket (34) is wrapped around the port of the air guide groove (32). The mounting bracket (22) is fixedly connected with a negative pressure pump (35). The two sides of the negative pressure pump (35) are fixed and connected to a suction pipe (351). The other ends of the two sets of suction pipes (351) are respectively connected to the inner cavity of the two sides of the air guide groove (32). A solenoid valve is provided on the suction pipe (351).

3. The wire harness sealing wire detection device according to claim 2, characterized in that, The lifting unit includes a pull rope (5), and the inner top of the mounting frame (22) is fixedly connected to two limit guide wheels (51). The tops of the two sets of sealing plates (3) are fixedly connected to pull rings (52). The two ends of the pull rope (5) pass through the limit guide wheels (51) on both sides and are fixed to the tops of the pull rings (52) on both sides respectively. The middle of the pull rope (5) is fixedly connected to a pull plate (53). An electric cylinder (54) is fixedly connected to the mounting frame (22). The telescopic end of the electric cylinder (54) is fixedly connected to the side wall of the pull plate (53).

4. The wire harness sealing wire detection device according to claim 1, characterized in that, The clamping disk (4) has a wire clamping groove (41) on the top. Airbags (42) are fixedly connected to both sides of the inner cavity of the wire clamping groove (41). The driving part includes a friction wheel (6). A linkage groove (61) is opened at the bottom of each set of detection grooves (2). The friction wheel (6) is rotatably connected in the linkage groove (61), and the top of the friction wheel (6) is in contact with the bottom of the clamping disk (4).

5. The wire harness sealing wire detection device according to claim 4, characterized in that, The detection seat (1) has a drive groove (62) inside. Multiple sets of limiting rods (621) are symmetrically installed in the drive groove (62). A reciprocating gear ring (63) is slidably connected between the multiple sets of limiting rods (621). A drive rack (631) is fixedly connected to both sides of the reciprocating gear ring (63). The shaft of the friction wheel (6) passes through the drive groove (62) and is fixedly connected to the driven gear (632). The driven gear (632) meshes with the drive rack (631). A drive motor (64) is fixedly connected to the side wall of the detection seat (1). The shaft of the drive motor (64) passes through the drive groove (62) and is fixedly connected to the incomplete gear (641). The incomplete gear (641) meshes with the teeth of the upper and lower layers of the inner ring of the reciprocating gear ring (63).

6. The wire harness sealing wire detection device according to claim 5, characterized in that, The vibrating part includes an impact rod (7). A vibration groove (71) is provided in the detection seat (1) located below the lower slot (21). A spring telescopic rod (72) is fixedly connected to the top of the inner cavity of the vibration groove (71). The impact rod (7) is fixedly connected to the bottom of the telescopic end of the spring telescopic rod (72). Piston plates (73) are slidably connected to both sides of the inner cavity of the drive groove (62). The side wall of the piston plate (73) is fixedly connected to the end of the drive rack (631). The piston plate (73) and the drive groove (62) form an air-filled cavity. The air-filled cavity is connected to the upper cavity of the spring telescopic rod (72) through an air guide pipe (74).

7. The wire harness sealing wire detection device according to claim 6, characterized in that, The bottom of the vibration groove (71) is provided with a ventilation groove (75), the bottom of the impact rod (7) is fixedly connected with an exhaust pipe (76), the extension part of the spring telescopic rod (72) is provided with an exhaust groove (721), the top of the exhaust groove (721) is connected to the upper cavity of the spring telescopic rod (72), the bottom end of the exhaust groove (721) passes through the impact rod (7) and is connected to the top end of the exhaust pipe (76), and a pressure valve is provided in the exhaust pipe (76).

8. The wire harness sealing wire detection device according to claim 7, characterized in that, The pressure at which the pressure valve opens is greater than the thrust required for the spring telescopic rod (72) to extend, and the pressure at which the pressure valve opens is less than the thrust required for the driven gear (632) to mesh and rotate with the drive rack (631).

9. A wire harness sealing wire detection device according to claim 3, characterized in that, A pressure detector (8) is fixedly connected to the top of the sealing plate (3). The detection end of the pressure detector (8) extends through into the air guide groove (32). The top of the air guide groove (32) is fixed and connected to a pressure relief pipe (81), and a solenoid valve is provided on the pressure relief pipe (81). The mounting bracket (22) is fixedly connected to a controller (82), which is electrically connected to the air pressure detector (8), the solenoid valve in the pressure relief pipe (81), the solenoid valve in the air extraction pipe (351), the negative pressure pump (35), and the electric cylinder (54).

10. A method for detecting the sealing line of a wire harness, comprising a wire harness sealing line detection device as described in any one of claims 1-9, characterized in that, The steps are as follows: Step 1: First, insert the black rubber ring of the wire harness sealing wire sample into the lower slot (21), and then fix one end of the sample to the clamping plate (4); Step 2: Next, lower the sealing plate (3) so that it fits against the detection seat (1); Step 3: Extract the gas from the test tank (2) and test the airtightness of the black rubber ring; Step 4: During the testing process, the wire harness sealing line is moved back and forth, and vibration is generated at the bottom of the lower slot (21) to simulate the real use scenario; Step 5: Release the negative pressure, lift the sealing plate (3), take out the tested sample, put the untested sample back in, and then repeat the above steps to carry out a new round of testing.

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