A hot melt adhesive thermal stability testing device for automobile wire harness tape

Abstract

The utility model discloses a kind of hot melt adhesive thermal stability testing devices for automobile wiring harness tape, belong to hot melt adhesive performance test technical field, its technical scheme main points include box, the right side of the box inner wall is movably connected with fixed box, and the inside fixed connection of box has heating assembly, the inside fixed connection of fixed box has detection component, and the front side fixed connection of fixed box has swing door, solve the detection effect of existing testing device is not good, in actual use process, tape will be continuously subjected to the pulling force of wiring harness under vibration, bumping and other working conditions due to lack of stretch structure, and existing device can only realize static high-temperature environment simulation, cannot exert dynamic or static tension to simulate stress action in actual use, it is difficult to meet the test demand of complex working condition of automobile wiring harness, finally influence the accurate evaluation of tape quality, reduce the practicability of the device.

Description

Technical Field

[0001] This utility model relates to the field of hot melt adhesive performance testing technology, and in particular to a device for testing the thermal stability of hot melt adhesive for automotive wiring harness tape. Background Technology

[0002] Automotive wiring harness tape is a key component for fixing and protecting automotive wiring harnesses. Its core adhesive material is hot melt adhesive. When a car is running, the temperature in areas such as the engine compartment and chassis can reach 80-150℃. Long-term high temperature will cause the hot melt adhesive to soften, reduce its adhesion, and even cause the tape to fall off, leading to safety hazards such as wire harness wear and short circuits. Therefore, the thermal stability of hot melt adhesive is the core indicator for measuring the quality of wiring harness tape.

[0003] Existing testing devices mostly employ a method of manually testing adhesion after heating in an oven;

[0004] An existing patent (publication number: CN211014084U) discloses a heat insulation performance testing device for heat insulation coatings used in fire protection engineering. The device guides the gas inside the testing chamber through a ventilation component, thereby simulating the state of the coating when it is used externally, thus improving the authenticity of the test.

[0005] To address the aforementioned issues, existing patents offer solutions, but the testing results are unsatisfactory. In actual use, automotive wiring harnesses experience continuous tensile forces from vibrations and bumps. Due to the lack of a tensile structure, existing devices can only simulate static high-temperature environments and cannot apply dynamic or static tensile forces to simulate the stress in actual use. This makes it difficult to meet the testing requirements of complex automotive wiring harness conditions, ultimately affecting the accurate assessment of tape quality and reducing the practicality of the device.

[0006] To address this, a thermal stability testing device for hot melt adhesives used in automotive wiring harness tapes is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a thermal stability testing device for hot melt adhesive used in automotive wiring harness tapes. This device addresses the shortcomings of existing testing devices, which often fail to achieve satisfactory results. In actual use, automotive wiring harnesses experience continuous tensile forces under conditions such as vibration and bumps. Due to the lack of a tensile structure, existing devices can only simulate static high-temperature environments and cannot apply dynamic or static tensile forces to simulate the stress in actual use. This makes it difficult to meet the testing requirements of complex automotive wiring harness conditions, ultimately affecting the accurate assessment of tape quality and reducing the practicality of the device.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a thermal stability testing device for hot melt adhesive used in automotive wiring harness tape, comprising a housing, a fixed box movably connected to the right side of the inner wall of the housing, a heating component fixedly connected inside the housing, a detection component fixedly connected inside the fixed box, and a movable door fixedly connected to the front side of the fixed box. The detection component includes a bidirectional screw, with threaded sleeves threadedly connected to both the front and rear sides of the surface of the bidirectional screw, and a rotating motor fixedly connected to the front side of the bidirectional screw. A moving block is rotatably connected to the surface of the threaded sleeve, and an L-shaped plate is fixedly connected to the right side of the moving block. Threaded rods are rotatably connected inside both L-shaped plates, and a rotating ring is fixedly connected to the top of the threaded rods. A T-shaped clamp is threadedly connected to the surface of the threaded rods, and the T-shaped clamp is movably connected inside the L-shaped plates.

[0009] Preferably, the heating component includes a hot air blower, a conveying pipe is fixedly connected to the right side of the hot air blower, and a gas supply main pipe is fixedly connected to the other end of the conveying pipe. Gas supply branch pipes are fixedly connected to the front and rear sides of the left side of the gas supply main pipe, and the other end of the gas supply branch pipe extends into the interior of the box and is fixedly connected to a U-shaped gas storage block. Several exhaust holes are provided at the top and bottom of the inner wall of the U-shaped gas storage block.

[0010] Preferably, an air inlet pipe is fixedly connected to the front side of the hot air blower, and a filter screen is fixedly connected to the side of the air inlet pipe away from the hot air blower.

[0011] Preferably, heating lamps are fixedly connected to the top and bottom of the inner wall of the box, and the heating lamps are located between the U-shaped gas storage blocks.

[0012] Preferably, the left side of the T-shaped clamp is provided with a threaded hole for use with a threaded rod, and the surface of the threaded rod is in contact with the inner wall of the threaded hole.

[0013] Preferably, a sliding groove is provided on the left side of the inner wall of the box, and a positioning rod is fixedly connected to the top and bottom of the sliding groove. A slider is slidably connected to the surface of the positioning rod, and the slider is fixedly connected to the fixed box. Positioning plates are fixedly connected to both sides of the front side of the box. A buckle block is rotatably connected to the front side of the positioning plate, and the movable door is slidably connected to the surface of the positioning plate.

[0014] Preferably, a controller is fixedly connected to the front right side of the housing, and the controller is electrically connected to the heating component and the detection component.

[0015] Preferably, an environmental detector is fixedly connected to the right side of the rear side of the movable door, and the environmental detector is electrically connected to the controller; an industrial camera is fixedly connected to the top of the rear side of the movable door, and the industrial camera is electrically connected to the controller.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By setting up a heating component, this application can blow hot air into the chamber through a hot air blower, and with the help of a heating lamp, the temperature can be freely adjusted, avoiding the impact of local temperature differences on the test accuracy and improving the ease of use of the device;

[0018] 2. This application, by setting up a detection component, can drive the T-shaped clamp to move through a rotating ring, thereby fixing the wire harness tape between the T-shaped clamp and the L-shaped plate, completing the fixation of wire harness tape samples of specific specifications. At the same time, the distance between the two L-shaped plates can be adjusted by driving the rotating motor to achieve the stretching operation of the wire harness tape sample, which can simulate the tensile force generated by vibration and bumps during car driving, thus improving the accuracy of the detection results. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the hot melt adhesive thermal stability testing device for automotive wiring harness tape of this utility model.

[0020] Figure 2 This is a side view of the hot melt adhesive thermal stability testing device for automotive wiring harness tape according to this utility model;

[0021] Figure 3 This is a schematic diagram showing the connection of the housing, slider, fixing box, and controller of this utility model;

[0022] Figure 4 This is a schematic diagram of the heating assembly of this utility model;

[0023] Figure 5 This is a schematic diagram showing the connection of the movable door, fixing groove, and detection component of this utility model.

[0024] In the diagram, 1. Box body; 2. Fixing box; 3. Heating component; 301. Hot air blower; 302. Delivery pipe; 303. Main gas supply pipe; 304. Branch gas supply pipe; 305. U-shaped gas storage block; 306. Exhaust port; 4. Detection component; 401. Bidirectional screw; 402. Threaded sleeve; 403. Rotating motor; 404. Moving block; 405. L-shaped plate; 406. Threaded rod; 407. Rotating ring; 408. T-shaped clamp; 5. Movable door; 6. Air inlet pipe; 7. Filter screen; 8. Heating lamp; 9. Threaded hole; 10. Slide groove; 11. Positioning rod; 12. Slider; 13. Positioning plate; 14. Buckle block; 15. Controller; 16. Environmental detector; 17. Industrial camera. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 The present invention provides the following technical solution:

[0027] A thermal stability testing device for hot melt adhesive used in automotive wiring harness tape includes a housing 1. A fixed box 2 is movably connected to the right side of the inner wall of the housing 1, and a heating component 3 is fixedly connected inside the housing 1. A detection component 4 is fixedly connected inside the fixed box 2, and a movable door 5 is fixedly connected to the front side of the fixed box 2. The detection component 4 includes a bidirectional screw 401, with threaded sleeves 402 threadedly connected to both the front and rear sides of the surface of the bidirectional screw 401. A rotating motor 403 is fixedly connected to the front side of the bidirectional screw 401. A moving block 404 is rotatably connected to the surface of the threaded sleeve 402, and an L-shaped plate 405 is fixedly connected to the right side of the moving block 404. Threaded rods 406 are rotatably connected inside both L-shaped plates 405, and a rotating ring 407 is fixedly connected to the top of the threaded rods 406. A T-shaped clamp 408 is threadedly connected to the surface of the threaded rods 406, and the T-shaped clamp 408 is movably connected inside the L-shaped plates 405.

[0028] In this embodiment: by rotating the rotating ring 407, the threaded rod 406 is driven to rotate, which in turn drives the T-shaped clamp 408 to move smoothly, fixing the wire harness between the T-shaped clamp 408 and the L-shaped plate 405. This achieves the fixation of the wire harness tape sample of a specific specification, preventing displacement and loosening, ensuring the normal operation of the stretching operation, and improving the ease of use of the testing component 4. Furthermore, by rotating the motor 403, the bidirectional screw 401 is driven to rotate, which drives the threaded sleeve 402 to move smoothly, simultaneously pushing the moving block 404 and the L-shaped plate 405 to move, thus completing the process. The adjustable spacing enables stretching operations, simulating the pulling force generated by vibrations and bumps during vehicle operation, thus improving the detection effect of wire harness tape. Then, under the action of the hot air blower 301, hot air is generated and flows into the U-shaped air storage block 305 through the delivery pipe 302, the main air supply pipe 303, and the branch air supply pipe 304. Finally, it is evenly sprayed into the chamber 1 through the exhaust block. With the help of the heating lamp 8, the temperature can be freely adjusted to ensure uniform temperature distribution in the chamber 1, avoid local temperature differences from affecting the test accuracy, and improve the ease of use of the heating component 3.

[0029] Specifically, such as Figure 4As shown, the heating assembly 3 includes a hot air blower 301. A conveying pipe 302 is fixedly connected to the right side of the hot air blower 301, and a gas supply main pipe 303 is fixedly connected to the other end of the conveying pipe 302. Gas supply branch pipes 304 are fixedly connected to the front and rear sides of the left side of the gas supply main pipe 303, and the other end of the gas supply branch pipe 304 extends into the interior of the housing 1 and is fixedly connected to a U-shaped gas storage block 305. Several exhaust holes 306 are provided at the top and bottom of the inner wall of the U-shaped gas storage block 305.

[0030] Specifically, such as Figure 1 , Figure 4 As shown, an air inlet pipe 6 is fixedly connected to the front side of the hot air blower 301, and a filter screen 7 is fixedly connected to the side of the air inlet pipe 6 away from the hot air blower 301.

[0031] Specifically, such as Figure 2 , Figure 3 As shown, heating lamps 8 are fixedly connected to the top and bottom of the inner wall of the box 1, and the heating lamps 8 are located between the U-shaped gas storage blocks 305.

[0032] In this embodiment: the air intake pipe 6 and the filter screen 7 work together to steadily increase the air intake range and block the entry of impurities by the filter screen 7, ensuring the stable operation of the hot air blower 301. The temperature can be freely adjusted in conjunction with the heating lamp 8, ensuring a uniform temperature distribution inside the chamber 1, avoiding the impact of local temperature differences on the test accuracy, and improving the ease of use of the heating component 3.

[0033] Specifically, such as Figure 5 As shown, a threaded hole 9 for use with a threaded rod 406 is provided on the left side inside the T-shaped clamp 408, and the surface of the threaded rod 406 is in contact with the inner wall of the threaded hole 9.

[0034] Specifically, such as Figure 3 As shown, a sliding groove 10 is provided on the left side of the inner wall of the box 1, and a positioning rod 11 is fixedly connected to the top and bottom of the sliding groove 10. A slider 12 is slidably connected to the surface of the positioning rod 11, and the slider 12 is fixedly connected to the fixed box 2. Positioning plates 13 are fixedly connected to both sides of the front side of the box 1. A buckle block 14 is rotatably connected to the front side of the positioning plate 13, and the movable door 5 is slidably connected to the surface of the positioning plate 13.

[0035] In this embodiment: the cooperation of positioning rod 11 and slider 12 forms a guide structure, allowing the fixed box 2 to move smoothly under the constraint of slider 12 and positioning rod 11, completing the movement of the movable door 5 and the detection component 4, facilitating the replacement of wire harness tape. At the same time, the positioning plate 13 forms a guide structure, allowing the movable door 5 to move smoothly under the restriction of the positioning plate 13. After moving to the appropriate position, rotating the buckle block 14 completes the quick locking, realizing the tight connection between the movable door 5 and the box 1, preventing heat or gas leakage, ensuring detection accuracy, and improving the ease of use of the device. Furthermore, the cooperation of threaded rod 406 and threaded hole 9 forms a guide structure, allowing threaded rod 406 to drive T-shaped clamp 408 to move smoothly, fixing the wire harness tape sample between T-shaped clamp 408 and L-shaped plate 405, realizing the fixation of wire harness tape samples of specific specifications, preventing displacement and loosening, ensuring the normal operation of the stretching operation, and improving the ease of use of the detection component 4.

[0036] Specifically, such as Figure 1 , Figure 2 , Figure 3 As shown, a controller 15 is fixedly connected to the front right side of the housing 1, and the controller 15 is electrically connected to the heating component 3 and the detection component 4.

[0037] Specifically, such as Figure 2 As shown, an environmental detector 16 is fixedly connected to the right side of the rear side of the movable door 5, and the environmental detector 16 is electrically connected to the controller 15. An industrial camera 17 is fixedly connected to the top of the rear side of the movable door 5, and the industrial camera 17 is electrically connected to the controller 15.

[0038] In this embodiment: the environmental detector 16 can detect the temperature change inside the chamber 1 in real time and transmit the data to the controller 15. In conjunction with the industrial camera 17, it can record the changes of the wire harness tape sample in real time during the detection process. At the same time, under the action of the controller 15, it can receive and process the data fed back by the environmental detector and the industrial camera in real time, and control the operation of the heating component 3 and the detection component 4 according to the data. It can blow hot air into the chamber 1 through the hot air blower 301 to achieve free temperature adjustment, and drive the T-shaped clamp 408 to move through the rotating ring 407 to complete the display fixation. In conjunction with the rotating motor 403 to drive the two L-shaped plates 405 to move, it completes the stretching operation, which improves the practicality of the device.

[0039] Working principle: When conducting thermal stability testing on automotive wiring harness tape, firstly, rotate the latch block 14 to release the lock on the movable door 5. This allows the movable door 5 to move smoothly along the slide groove 10, driven by the fixed box 2 and the detection component 4, under the constraint of the slider 12 and the positioning rod 11, exposing the detection component 4. Next, rotate the rotating ring 407 to drive the threaded rod 406 to rotate, causing the T-shaped clamp 408 to move smoothly, fixing the wiring harness tape sample between the T-shaped clamp 408 and the L-shaped plate 405. Then, reset the movable door 5 and rotate the latch block 14 to lock it, allowing the wiring harness tape sample to enter the housing 1 for preparation. The operator can set the operating parameters of the heating component 3 and the detection component 4 through the controller 15, start the hot air blower 301 to generate hot air, and let it flow into the U-shaped air storage block through the delivery pipe 302, the main air supply pipe 303, and the branch air supply pipe 304. Inside chamber 1, the exhaust block evenly sprays the solution, and the temperature is adjusted freely with the heating lamp 8 to ensure uniform temperature distribution within chamber 1. Simultaneously, the rotating motor 403 drives the bidirectional screw 401 to rotate, causing the threaded sleeve 402 to move smoothly. This, in turn, pushes the moving block 404 and the L-shaped plate 405 to move, adjusting the spacing and performing a stretching operation. This simulates the tensile force generated by vibration and bumps during car driving. The two work together to achieve a combined high-temperature and tensile test. In addition, during the test, the environmental detector 16 can detect the temperature changes inside chamber 1 in real time and transmit the data to the controller 15. The controller 15 adjusts the temperature inside chamber 1 based on the data. At the same time, the industrial camera 17 records the status of the wire harness tape sample in real time and feeds the image back to the controller 15, allowing operators to monitor the test results in real time.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hot melt adhesive thermal stability testing device for automobile wiring harness tape, comprising a box body (1), characterized in that: A fixed box (2) is movably connected to the right side of the inner wall of the box (1), and a heating component (3) is fixedly connected inside the box (1). A detection component (4) is fixedly connected inside the fixed box (2), and a movable door (5) is fixedly connected to the front side of the fixed box (2). The detection component (4) includes a bidirectional screw (401), and threaded sleeves (402) are threadedly connected to the front and rear sides of the surface of the bidirectional screw (401). A rotating electric motor is fixedly connected to the front side of the bidirectional screw (401). The machine (403) has a movable block (404) rotatably connected to the surface of the threaded sleeve (402), and an L-shaped plate (405) is fixedly connected to the right side of the movable block (404). Threaded rods (406) are rotatably connected inside both L-shaped plates (405), and a rotating ring (407) is fixedly connected to the top of the threaded rods (406). T-shaped clamps (408) are threadedly connected to the surface of the threaded rods (406), and the T-shaped clamps (408) are movably connected inside the L-shaped plates (405).

2. The hot melt adhesive thermal stability testing device for automobile wiring harness tape according to claim 1, characterized in that: The heating component (3) includes a hot air blower (301). A conveying pipe (302) is fixedly connected to the right side of the hot air blower (301), and a gas supply main pipe (303) is fixedly connected to the other end of the conveying pipe (302). Gas supply branch pipes (304) are fixedly connected to the front and rear sides of the left side of the gas supply main pipe (303), and the other end of the gas supply branch pipe (304) extends into the interior of the box (1) and is fixedly connected to a U-shaped gas storage block (305). Several exhaust holes (306) are provided on the top and bottom of the inner wall of the U-shaped gas storage block (305).

3. The hot melt adhesive thermal stability testing device for automobile wiring harness tape according to claim 2, characterized in that: An air inlet pipe (6) is fixedly connected to the front side of the hot air blower (301), and a filter screen (7) is fixedly connected to the side of the air inlet pipe (6) away from the hot air blower (301).

4. The hot melt adhesive thermal stability testing device for automobile wiring harness tape according to claim 2, characterized in that: Heating lamps (8) are fixedly connected to the top and bottom of the inner wall of the box (1), and the heating lamps (8) are located between the U-shaped gas storage blocks (305).

5. The hot melt adhesive thermal stability testing device for automobile wiring harness tape according to claim 1, characterized in that: The left side of the T-shaped clamp (408) is provided with a threaded hole (9) for use with a threaded rod (406), and the surface of the threaded rod (406) is in contact with the inner wall of the threaded hole (9).

6. The thermal stability testing device for hot melt adhesive used in automotive wiring harness tape according to claim 1, characterized in that: A sliding groove (10) is provided on the left side of the inner wall of the box (1), and a positioning rod (11) is fixedly connected to the top and bottom of the sliding groove (10). A slider (12) is slidably connected to the surface of the positioning rod (11), and the slider (12) is fixedly connected to the fixed box (2). Positioning plates (13) are fixedly connected to both sides of the front side of the box (1). A buckle block (14) is rotatably connected to the front side of the positioning plate (13), and the movable door (5) is slidably connected to the surface of the positioning plate (13).

7. The hot melt adhesive thermal stability testing device for automobile wiring harness tape according to claim 1, characterized in that: A controller (15) is fixedly connected to the front right side of the housing (1), and the controller (15) is electrically connected to the heating component (3) and the detection component (4).

8. The hot melt adhesive thermal stability testing device for automobile wiring harness tape according to claim 7, characterized in that: An environmental detector (16) is fixedly connected to the right side of the rear side of the movable door (5), and the environmental detector (16) is electrically connected to the controller (15). An industrial camera (17) is fixedly connected to the top of the rear side of the movable door (5), and the industrial camera (17) is electrically connected to the controller (15).

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