Welding spot strength detection device for automobile wire failure analysis

Abstract

The utility model discloses a welding spot strength detection device for automobile wire failure analysis, which belongs to the technical field of automobile wire welding spot detection devices, and comprises a control handle, an ultrasonic detector and a quantitative smearing mechanism, and the quantitative smearing mechanism for quantitatively smearing the coupling agent on each detection welding spot is arranged on one side of the ultrasonic detector. By means of the mode, ultrasonic detection can be conducted on welding spots needing to be detected on an automobile production line through the ultrasonic detector in the using process, and quantitative discharging can be conducted on each welding spot needing to be detected through the discharging assembly before detection; therefore, the thickness of the coupling agent on each welding spot is ensured to be consistent, the accuracy and stability of welding spot strength detection are improved, and after discharging, the coating assembly can coat the coupling agent to ensure stable contact between the coupling agent and the welding spots.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive wire weld joint detection devices, specifically to a weld joint strength detection device for automotive wire failure analysis. Background Technology

[0002] With the widespread application of welding technology in the automotive manufacturing industry, welding quality directly affects the safety and durability of vehicles. Ultrasonic weld strength testing technology, due to its high efficiency and non-destructive characteristics, has gradually become an important quality inspection method in automobile manufacturing. Currently, automakers commonly use ultrasonic weld strength testing devices on their production lines to inspect the quality of weld joints.

[0003] As shown in the reference case "A Strength Testing Equipment for Quality Inspection of Automobile Welding Process" (Announcement No. CN219533013U), align the discharge pipe with the weld point, start the electric push rod, the electric push rod pushes the push plate to deliver the coupling agent in the receiving pipe to the discharge pipe, apply the coupling agent to the weld point, after applying the coupling agent, press the sliding rod, the sliding rod drives the ultrasonic testing probe to overlap the weld point, and the ultrasonic testing probe performs strength testing on the weld point.

[0004] However, in actual use, the amount of coupling agent applied cannot be controlled during the application process. Some solder joints may have too thin or too thick a coupling agent, which can lead to inconsistent reflection or penetration of ultrasonic signals and ultimately affect the reliability of the test results.

[0005] Based on this, this utility model designs a weld strength detection device for automotive wiring failure analysis to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a weld strength detection device for automotive wire failure analysis.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A solder joint strength testing device for automotive wiring failure analysis includes a control handle and an ultrasonic testing instrument. A mounting frame is fixedly connected to one side of the control handle, and the ultrasonic testing instrument is fixedly connected to the mounting frame. A quantitative application mechanism is provided on one side of the ultrasonic testing instrument for quantitatively applying coupling agent to each tested solder joint. The quantitative application mechanism includes a storage tube fixedly installed on one side of the mounting frame, a dispensing component on one side of the storage tube, and an application component on one side of the mounting frame.

[0009] Furthermore, the feeding assembly includes a sealing cap disposed on the top of the storage tube, a feeding port fixedly connected to the bottom of the storage tube, and an air pump fixedly connected to the top of the sealing cap.

[0010] Furthermore, a piston plate is provided inside the storage tube, and the piston plate is located below the output end of the air pump.

[0011] Furthermore, a connecting pipe is fixedly connected to one side of the sealing cap, and the connecting pipe is threadedly connected to the inner wall of the storage tube.

[0012] Furthermore, a guide rod is fixedly connected inside the storage tube, and the piston plate is slidably connected to the guide rod.

[0013] Furthermore, a detection head is slidably connected to one side of the ultrasonic detector, and a first spring is fixedly connected to the top of the detection head. The other end of the first spring is fixedly connected to the mounting frame.

[0014] Furthermore, a movable plate is provided on the surface of the control handle, and multiple controllers are fixedly installed on the surface of the movable plate. A positioning screw is provided through the surface of the movable plate, and the other end of the positioning screw is pressed against the surface of the control handle.

[0015] Furthermore, the coating component includes a movable frame disposed on one side of the mounting frame, and a coating wheel is rotatably mounted on one side of the movable frame, the coating wheel being located on one side of the discharge port.

[0016] Furthermore, the application assembly also includes a movable rod fixedly installed on one side of the mounting frame. One end of the movable rod is slidably connected to the movable frame, and a second spring is sleeved on the outside of the movable rod. The two ends of the second spring are fixedly connected to the movable frame and the mounting frame, respectively.

[0017] Furthermore, a cleaning plate is fixedly connected to one side of the movable frame, and the surface of the cleaning plate has a groove, with one side of the cleaning plate in contact with the surface of the applicator wheel.

[0018] Beneficial effects

[0019] 1. When in use, the ultrasonic testing instrument can be used to perform ultrasonic testing on the weld points that need to be tested on the automotive production line. Before testing, the feeding component can feed a quantitative amount of material to each weld point that needs to be tested, thereby ensuring that the thickness of the coupling agent on each weld point is consistent, which improves the accuracy and stability of the weld point strength test. After feeding, the coating component can apply the coupling agent to ensure that the coupling agent is in stable contact with the weld point.

[0020] 2. After the coupling agent is quantitatively released from the discharge port, the application wheel can rotate under the support of the movable frame, so that the coupling agent is evenly distributed on the surface of the solder joint. When the application wheel contacts the solder joint, the movable frame can slide along the movable rod and simultaneously compress the second spring, so that the application wheel can automatically adapt to the height difference of different solder joint surfaces and ensure that the coupling agent is evenly applied. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 The main structure of the weld strength testing device for automotive wiring failure analysis according to this utility model is three-dimensional. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the quantitative coating mechanism of a weld strength testing device for automotive line failure analysis according to this utility model.

[0024] Figure 3 This is a schematic diagram of the internal structure of the storage tube of a weld strength testing device for automotive wiring failure analysis according to this utility model.

[0025] Figure 4 This is a schematic diagram of the coating component of the main structure of a weld strength testing device for automotive line failure analysis according to this utility model.

[0026] The labels in the diagram represent:

[0027] 1. Control handle; 11. Mounting frame; 2. Ultrasonic detector; 21. Moving plate; 22. Controller; 23. Positioning screw; 3. Quantitative application mechanism; 31. Storage tube; 32. Discharge assembly; 321. Sealing cover; 322. Piston plate; 323. Discharge port; 324. Connecting tube; 325. Guide rod; 326. Air pump; 327. Detection head; 328. First spring; 33. Application assembly; 331. Moving frame; 332. Application wheel; 333. Moving rod; 334. Second spring; 335. Cleaning plate; 336. Groove. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] The present invention will be further described below with reference to the embodiments.

[0030] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4 A solder joint strength testing device for automotive wiring failure analysis includes a control handle 1 and an ultrasonic detector 2. A mounting frame 11 is fixedly connected to one side of the control handle 1, and the ultrasonic detector 2 is fixedly connected to the mounting frame 11. A quantitative application mechanism 3 is provided on one side of the ultrasonic detector 2 for quantitatively applying coupling agent to each tested solder joint. The quantitative application mechanism 3 includes a storage tube 31 fixedly installed on one side of the mounting frame 11, a feeding component 32 is provided on one side of the storage tube 31, and an application component 33 is provided on one side of the mounting frame 11.

[0031] In this embodiment of the utility model, the ultrasonic testing instrument 2 can be used to perform ultrasonic testing on the weld points that need to be tested on the automobile production line. Before testing, the feeding component 32 can feed a quantitative amount of material to each weld point that needs to be tested, thereby ensuring that the thickness of the coupling agent on each weld point is consistent and improving the accuracy and stability of the weld point strength test. After feeding, the coating component 33 can apply the coupling agent to ensure that the coupling agent is in stable contact with the weld point.

[0032] In the strength analysis of automotive wiring harness welding points, the quantitative coating mechanism 3 can accurately detect the welding firmness of electrical connection points, ensuring that the welding points will not break or have poor contact under long-term vibration, thermal expansion and contraction or high current load. In addition, when testing the spot welding strength of body structural components, it can also efficiently detect the welding quality of key components such as the frame, doors, and chassis, preventing structural strength reduction due to welding defects.

[0033] In some embodiments, please refer to the appendix to the instruction manual. Figure 2 and Figure 3 The material feeding assembly 32 includes a sealing cover 321 disposed on the top of the storage tube 31, a feeding port 323 fixedly connected to the bottom of the storage tube 31, and an air pump 326 fixedly connected to the top of the sealing cover 321.

[0034] In this embodiment of the utility model, the coupling agent can be discharged through the discharge port 323 during use. When discharge is required, the air pump 326 can be controlled to inject the same amount of gas into the sealed storage tube 31 each time, thereby pushing the coupling agent in the storage tube 31 to flow into the discharge port 323, so as to achieve the same amount of coupling agent discharged each time.

[0035] A piston plate 322 is provided inside the storage tube 31, and the piston plate 322 is located below the output end of the air pump 326.

[0036] In this embodiment of the invention, the piston plate 322 is located above the coupling agent and below the output end of the air pump 326. When the air pump 326 is started, the gas acts on the upper surface of the piston plate 322, causing the piston plate 322 to move downward along the axial direction of the storage tube 31, thereby applying pressure to the coupling agent inside the storage tube 31 and causing the coupling agent to be discharged quantitatively through the discharge port 323.

[0037] A connecting pipe 324 is fixedly connected to one side of the sealing cap 321, and the connecting pipe 324 is threadedly connected to the inner wall of the storage pipe 31.

[0038] In this embodiment of the invention, the sealing cap 321 can be easily disassembled and replaced, making it convenient to clean the inside of the storage tube 31 or replace the coupling agent.

[0039] The storage tube 31 is internally fixedly connected to a guide rod 325, and the piston plate 322 is slidably connected to the guide rod 325.

[0040] In this embodiment of the invention, the piston plate 322 can move smoothly along the axial direction of the guide rod 325 when it moves inside the storage tube 31, thus avoiding the problem of uneven discharge of coupling agent caused by tilting or offset.

[0041] A detection head 327 is slidably connected to one side of the ultrasonic detector 2. A first spring 328 is fixedly connected to the top of the detection head 327. The other end of the first spring 328 is fixedly connected to the mounting frame 11.

[0042] In this embodiment of the invention, when the detection head 327 contacts the solder joint for detection, the detection head 327 can be moved upward to simultaneously compress the first spring 328. The first spring 328 generates elasticity after being compressed, thereby ensuring that the detection head 327 can closely fit the surface of the solder joint and maintain a stable detection pressure.

[0043] A movable plate 21 is provided on the surface of the control handle 1. Multiple controllers 22 are fixedly installed on the surface of the movable plate 21. A positioning screw 23 is provided through the surface of the movable plate 21, and the other end of the positioning screw 23 is pressed against the surface of the control handle 1.

[0044] In this embodiment of the utility model, the positioning screw 23 can be rotated to contact and abut against the control handle 1, thereby facilitating the movement of the moving plate 21 and the corresponding multiple controllers 22. This allows the operator to adjust the controllers 22 to a suitable control position for easy operation.

[0045] In some embodiments, please refer to the appendix to the instruction manual. Figure 2 and Figure 4 The applicator 33 includes a movable frame 331 disposed on one side of the mounting frame 11, and an applicator 332 is rotatably mounted on one side of the movable frame 331. The applicator 332 is located on one side of the discharge port 323.

[0046] In this embodiment of the invention, when in use, after the coupling agent is quantitatively released from the discharge port 323, the application wheel 332 can rotate under the support of the movable frame 331, so that the coupling agent is evenly distributed on the surface of the solder joint.

[0047] The application assembly 33 also includes a movable rod 333 fixedly installed on one side of the mounting frame 11. One end of the movable rod 333 is slidably connected to the movable frame 331. A second spring 334 is sleeved on the outside of the movable rod 333. The two ends of the second spring 334 are fixedly connected to the movable frame 331 and the mounting frame 11, respectively.

[0048] In this embodiment of the invention, when the applicator 332 contacts the solder joint, the movable frame 331 can slide along the movable rod 333 and simultaneously compress the second spring 334, so that the applicator 332 can automatically adapt to the height difference of different solder joint surfaces and ensure that the coupling agent is applied evenly.

[0049] A cleaning plate 335 is fixedly connected to one side of the movable frame 331. The surface of the cleaning plate 335 has a groove 336, and one side of the cleaning plate 335 is in contact with the surface of the applicator 332.

[0050] In this embodiment of the invention, the cleaning plate 335 can clean the surface of the coating wheel 332 while it is rotating, so as to prevent the accumulation of coupling agent residue, which would affect the uniformity of the next coating and the detection accuracy.

[0051] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A weld strength testing device for automotive wiring failure analysis, comprising a control handle (1) and an ultrasonic testing instrument (2), characterized in that: A mounting frame (11) is fixedly connected to one side of the control handle (1), and the ultrasonic detector (2) is fixedly connected to the mounting frame (11). A quantitative application mechanism (3) is used to apply a quantitative amount of coupling agent to each test weld point. The quantitative application mechanism (3) is located on one side of the ultrasonic tester (2). The quantitative application mechanism (3) includes a storage tube (31) fixedly installed on one side of the mounting frame (11), a feeding component (32) is provided on one side of the storage tube (31), and an application component (33) is provided on one side of the mounting frame (11).

2. The welded joint strength detection device for automobile wire failure analysis according to claim 1, characterized by The feeding assembly (32) includes a sealing cap (321) disposed on the top of the storage tube (31), a feeding port (323) fixedly connected to the bottom of the storage tube (31), and an air pump (326) fixedly connected to the top of the sealing cap (321).

3. The welded joint strength detection device for automobile wire failure analysis according to claim 1, characterized by The storage tube (31) is equipped with a piston plate (322), which is located below the output end of the air pump (326).

4. The welded joint strength detection device for automobile wire failure analysis according to claim 2, characterized by A connecting pipe (324) is fixedly connected to one side of the sealing cap (321), and the connecting pipe (324) is threadedly connected to the inner wall of the storage tube (31).

5. The welded joint strength detection device for automobile wire failure analysis according to claim 3, characterized by The storage tube (31) is fixedly connected to a guide rod (325), and the piston plate (322) is slidably connected to the guide rod (325).

6. The welded joint strength detection device for automobile wire failure analysis according to claim 1, characterized by The ultrasonic detector (2) has a detection head (327) slidably connected to one side, and a first spring (328) is fixedly connected to the top of the detection head (327). The other end of the first spring (328) is fixedly connected to the mounting frame (11).

7. The welded joint strength detection apparatus for automobile wire failure analysis according to claim 1, characterized by The surface of the control handle (1) is provided with a movable plate (21), and multiple controllers (22) are fixedly installed on the surface of the movable plate (21). A positioning screw (23) is provided through the surface of the movable plate (21), and the other end of the positioning screw (23) is pressed against the surface of the control handle (1).

8. The welded joint strength detection device for automobile wire failure analysis according to claim 1, characterized by The coating component (33) includes a movable frame (331) disposed on one side of the mounting frame (11), and a coating wheel (332) is rotatably mounted on one side of the movable frame (331), and the coating wheel (332) is located on one side of the discharge port (323).

9. The welded joint strength detection apparatus for automobile wire failure analysis according to claim 1, characterized by The application assembly (33) also includes a movable rod (333) fixedly installed on one side of the mounting frame (11). One end of the movable rod (333) is slidably connected to the movable frame (331). A second spring (334) is sleeved on the outside of the movable rod (333). The two ends of the second spring (334) are fixedly connected to the movable frame (331) and the mounting frame (11) respectively.

10. The welded joint strength detection device for automobile wire failure analysis according to claim 9, characterized by A cleaning plate (335) is fixedly connected to one side of the movable frame (331). The surface of the cleaning plate (335) is provided with a groove (336). One side of the cleaning plate (335) is in contact with the surface of the applicator (332).

Images