Vehicle body projection welding quality detection device

Abstract

The utility model provides a vehicle body projection welding quality detection device which comprises a supporting plate and further comprises a projection welding quality detection structure arranged on the supporting plate. And the supporting structure is arranged below the supporting plate. A clamping groove in a detection sleeve is connected to a standard part in a sleeving mode till an electromagnetic block abuts against the side wall of a vehicle body, a pressing frame presses a pressing switch, and the electromagnetic block is attracted and fixed to the side wall of the vehicle body, so that the whole detection device can be better attracted and supported on the vehicle body, and a rotating motor rotates to drive the detection sleeve to rotate; whether the projection welding bolt is welded to be qualified or not is judged by observing whether the projection welding bolt is loosened or not and whether obvious deformation and cracks exist in a welding seam area at the root of the projection welding bolt or not, the quality of projection welding of a vehicle body can be well detected, meanwhile, it is not needed for detection personnel to twist the projection welding bolt effortlessly, and the workload of the detection personnel is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive body projection welding technology, and in particular to an automotive body projection welding quality inspection device. Background Technology

[0002] Body projection welding is a high-efficiency welding method that can perform multi-point welding simultaneously, mainly used to replace arc welding, brazing, and interlocking. Projection welding is a resistance welding method in which one or more projections are pre-machined on the joint surface of the welded parts, so that they come into contact with the surface of another welded part, pressure is applied and electric current is applied to heat them, and after the projections are crushed, these contact points form a weld.

[0003] When inspecting the torsional quality of body-mounted projection weld bolts, specialized tools such as torque wrenches, sockets of various sizes, and bench vises are typically used to apply torque to the bolts. The bolts are then inspected for breakage, cracks, or loosening at the weld joints under this specified torque to determine their quality. However, this method requires significant effort from the inspectors, resulting in a heavy workload. Therefore, a crucial issue to address in the design of body-mounted projection weld quality inspection devices is how to effectively inspect the quality without requiring strenuous tightening by the inspectors. Utility Model Content

[0004] This invention provides a vehicle body projection weld quality inspection device to solve the problem that inspectors need to laboriously tighten tools when inspecting projection weld bolts.

[0005] This utility model solves the above-mentioned technical problems through the following technical solutions:

[0006] This utility model provides a vehicle body projection weld quality inspection device, including a support plate, and further comprising:

[0007] A projection weld quality inspection structure is mounted on a support plate.

[0008] A support structure is provided below the support plate to support the projection weld quality inspection structure.

[0009] A pressing structure is disposed above the projection weld quality detection structure.

[0010] Preferably, the top sidewall of the support plate is engraved with angle scale lines.

[0011] Preferably, four support frames are fixedly connected at equal intervals on the bottom sidewall of the support plate, and electromagnetic blocks are fixedly connected to the bottom sidewalls of the four support frames.

[0012] In this technical solution, the support frame can support the support plate, and the electromagnetic block can be attracted and fixed to the vehicle body when energized.

[0013] Preferably, a support frame and a display are fixedly connected to the top side wall of the support plate, four support rods are fixedly connected to the inner side wall of the support frame, a protective shell is fixedly connected between the four support rods, and heat dissipation grooves are provided at equal intervals on the side wall of the protective shell.

[0014] In this technical solution, the display can show the torque sensor vertically, the protective shell protects the rotating motor, and the heat sink can dissipate heat inside the protective shell.

[0015] Preferably, a push switch is fixedly connected to the top side wall of the protective shell, the push switch is electrically connected to the electromagnetic block, and the display is electrically connected to the torque sensor.

[0016] In this technical solution, when the push switch pops up, the electromagnetic block is de-energized and no longer generates an attractive force; when the push switch is pressed, the electromagnetic block is energized and generates an attractive force.

[0017] Preferably, the projection weld quality detection structure includes a detection sleeve, a rotating motor, a rotating rod, a fixed circular plate, a pointer plate, a snap-fit ​​groove, and a torque sensor. The rotating rod is rotatably connected to the side wall of the support plate and the protective shell. The rotating motor is fixedly connected to the inner side wall of the protective shell. The rotating end of the rotating motor is fixedly connected to the rotating rod. A torque sensor is fixedly installed on the rotating rod. The fixed circular plate is fixedly connected to the side wall of the rotating rod. The fixed circular plate is located between the support plate and the protective shell. The pointer plate is fixedly connected to the side wall of the fixed circular plate. The detection sleeve is fixedly connected to the bottom of the rotating rod. A square snap-fit ​​groove is formed on the bottom side wall of the detection sleeve.

[0018] In this technical solution, the rotating motor drives the rotating rod to rotate, which in turn drives the fixed circular plate and the detection sleeve to rotate. The fixed circular plate can drive the pointer plate to rotate synchronously with the detection sleeve, which can determine the angle of torsion during the detection process. The torque sensor detects the rotational torque and limits it through the display. Once the detected torque reaches the specified torque, the rotation stops, and the welded bolt is observed to see if it is loose and whether there is obvious deformation or cracks in the weld area at the root of the welded bolt, in order to determine whether the welded bolt is qualified.

[0019] Preferably, the pointer plate is attached to the top side wall of the support plate, and the lower half of the detection sleeve is circular and expands outward.

[0020] Preferably, a square standard part is slidably engaged in the snap-fit ​​groove, and the side wall of the standard part is provided with a threaded groove.

[0021] In this technical solution, standard parts can be threaded onto projection weld bolts.

[0022] Preferably, the support structure includes a support rod and a support ring. The support ring is rotatably connected to the side wall of the detection sleeve. Four support rods are fixedly connected at equal intervals to the side wall of the support ring. The other ends of the four support rods are fixedly connected to the side wall of the support frame. The support rods are inclined.

[0023] In this technical solution, the support rod supports the support ring, and the support ring supports the detection sleeve, so that the detection sleeve remains perpendicular to the support plate.

[0024] Preferably, the pressing structure includes a pressing frame, a telescopic rod, and a spring. One end of the telescopic rod and the spring are fixedly connected to the inner side wall of the top of the support frame, and the other end of the telescopic rod and the spring are fixedly connected to the pressing frame. The spring is sleeved on the outside of the telescopic rod.

[0025] In this technical solution, the detection device is lifted by manually holding the pressing frame and the support frame. The pressing frame moves towards the support frame, the telescopic rod and the spring are compressed, the push switch is no longer compressed, the push switch pops up, the pressing frame is released, the compressed spring unfolds and pushes the pressing frame towards the protective shell, and the pressing frame presses the push switch.

[0026] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0027] The positive and progressive effects of this utility model are as follows:

[0028] 1. By moving the testing sleeve to the standard part and fitting the snap-fit ​​groove on the testing sleeve onto the standard part until the electromagnetic block abuts against the side wall of the vehicle body, the pressing frame is released, the compressed spring unfolds and pushes the pressing frame towards the protective shell, the pressing frame presses the push switch, the electromagnetic block is energized, generating an adsorption force, adsorbing and fixing it to the side wall of the vehicle body, which facilitates better adsorption and support of the entire testing device on the vehicle body.

[0029] 2. The rotating motor drives the rotating rod to rotate, which in turn drives the fixed circular plate and the detection sleeve to rotate. The pointer plate rotates synchronously with the detection sleeve, which can determine the angle of torsion during the inspection process. The torque sensor detects the rotational torque and limits it on the display. Once the detected torque reaches the specified torque, the rotation stops, and the inspection is conducted to check whether the projection weld bolts are loose and whether there is obvious deformation or cracks in the weld area at the root of the projection weld bolts. This allows for better inspection of the quality of projection welds on the vehicle body without requiring the inspectors to tighten them manually, thus reducing their workload. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0031] Figure 2 This is a schematic diagram of the overall internal structure of this utility model.

[0032] Figure 3 This is a top view of the internal structure of the present invention.

[0033] Figure 4 The whole of this utility model Figure 2 A magnified schematic diagram of the structure at point A.

[0034] Explanation of reference numerals in the attached figures

[0035] 1. Support plate; 2. Support frame; 3. Electromagnetic block; 4. Projection weld quality inspection structure; 401. Inspection sleeve; 401. Rotating motor; 403. Rotating rod; 404. Fixed circular plate; 405. Pointer plate; 406. Snap-fit ​​groove; 407. Torque sensor; 411. Standard part; 412. Threaded groove; 5. Support structure; 501. Support rod one; 502. Support ring; 6. Fixing frame; 7. Protective shell; 8. Heat dissipation groove; 9. Pressing structure; 901. Pressing frame; 902. Telescopic rod; 903. Spring; 10. Support rod two; 11. Push switch; 12. Display. Detailed Implementation

[0036] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0037] like Figure 1-4 As shown, a body projection weld quality inspection device includes a support plate 1, and further includes:

[0038] A projection weld quality detection structure 4 is disposed on a support plate 1.

[0039] Support structure 5 is disposed below support plate 1 and supports projection weld quality detection structure 4.

[0040] The pressing structure 9 is disposed above the projection weld quality detection structure 4.

[0041] Angle scale lines are engraved on the top side wall of the support plate 1.

[0042] Four support frames 2 are fixedly connected at equal intervals on the bottom side wall of the support plate 1, and electromagnetic blocks 3 are fixedly connected on the bottom side wall of the four support frames 2.

[0043] The support frame 2 can support the support plate 1, and the electromagnetic block 3 can be attracted and fixed to the vehicle body when energized.

[0044] The support plate 1 has a support frame 2 and a display 12 fixedly connected to the top side wall. The support frame 2 has four support rods 10 fixedly connected to the inner side wall. The four support rods 10 are fixedly connected to a protective shell 7. The protective shell 7 has heat dissipation grooves 8 at equal intervals on its side wall.

[0045] The display 12 can display the torque sensor 407 vertically, the protective shell 7 protects the rotating motor 401, and the heat dissipation slot 8 can dissipate heat inside the protective shell 7.

[0046] A push switch 11 is fixedly connected to the top side wall of the protective shell 7. The push switch 11 is electrically connected to the electromagnetic block 3, and the display 12 is electrically connected to the torque sensor 407.

[0047] When the push switch 11 pops up, the electromagnetic block 3 is de-energized and no longer generates an attractive force. When the push switch 11 is pressed, the electromagnetic block 3 is energized and generates an attractive force.

[0048] The projection weld quality detection structure 4 includes a detection sleeve 401, a rotating motor 401, a rotating rod 403, a fixed circular plate 404, a pointer plate 405, a snap-fit ​​groove 406, and a torque sensor 407. The rotating rod 403 is rotatably connected to the side wall of the support plate 1 and the protective shell 7. The rotating motor 401 is fixedly connected to the inner side wall of the protective shell 7. The rotating end of the rotating motor 401 is fixedly connected to the rotating rod 403. A torque sensor 407 is fixedly installed on the rotating rod 403. The fixed circular plate 404 is fixedly connected to the side wall of the rotating rod 403. The fixed circular plate 404 is located between the support plate 1 and the protective shell 7. The pointer plate 405 is fixedly connected to the side wall of the fixed circular plate 404. The detection sleeve 401 is fixedly connected to the bottom of the rotating rod 403. A square snap-fit ​​groove 406 is provided on the bottom side wall of the detection sleeve 401.

[0049] The rotating motor 401 rotates, driving the rotating rod 403 to rotate. The rotating rod 403 drives the fixed circular plate 404 and the detection sleeve 401 to rotate. The fixed circular plate 404 can drive the pointer plate 405 to rotate synchronously with the detection sleeve 401, which can determine the angle of torsion during the detection process. The torque sensor 407 detects the rotation torque and limits it through the display 12. After the detected torque reaches the specified torque, the rotation stops, and it is observed whether the projection weld bolt is loose and whether there is obvious deformation or cracks in the weld area at the root of the projection weld bolt, so as to determine whether the projection weld bolt is qualified.

[0050] The pointer plate 405 is attached to the top side wall of the support plate 1, and the lower half of the detection sleeve 401 is circular and expands outward.

[0051] A square standard part 411 is slidably engaged in the snap-fit ​​groove 406, and a threaded groove 412 is provided on the side wall of the standard part 411.

[0052] Standard part 411 can be threaded onto a projection weld bolt.

[0053] The support structure 5 includes a support rod 501 and a support ring 502. The support ring 502 is rotatably connected to the side wall of the detection sleeve 401. Four support rods 501 are fixedly connected at equal intervals on the side wall of the support ring 502. The other ends of the four support rods 501 are fixedly connected to the side wall of the support frame 2. The support rods are inclined.

[0054] Support rod 501 supports support ring 502, and support ring 502 supports detection sleeve 401, so that detection sleeve 401 remains perpendicular to support plate.

[0055] The pressing structure 9 includes a pressing frame 901, a telescopic rod 902, and a spring 903. One end of the telescopic rod 902 and the spring 903 are fixedly connected to the inner side wall of the top of the support frame 2, and the other end of the telescopic rod 902 and the spring 903 are fixedly connected to the pressing frame 901. The spring 903 is sleeved on the outside of the telescopic rod 902.

[0056] Manually grasp the pressing frame 901 and the support frame 2 to lift the detection device. The pressing frame 901 moves towards the support frame 2, and the telescopic rod 902 and the spring 903 are compressed. The pressing switch 11 is no longer compressed, and the pressing switch 11 pops up, releasing the pressing frame 901. The compressed spring 903 unfolds and pushes the pressing frame 901 towards the protective shell 7, and the pressing frame 901 presses the pressing switch 11.

[0057] In use, all electrical components mentioned in this application are connected to an external power supply and control switch. When testing the projection welded bolts, the standard part 411 is threaded onto the projection welded bolt. When the testing device is lifted by manually holding the pressing frame 901 and the support frame 2, the pressing frame 901 moves toward the support frame 2, the telescopic rod 902 and the spring 903 are compressed, the pressing switch 11 is no longer compressed, the pressing switch 11 pops up, the electromagnetic block 3 is de-energized, and no longer has an adsorption force.

[0058] Move the detection sleeve 401 to the standard part 411, and attach the snap-fit ​​groove 406 on the detection sleeve 401 to the standard part 411 until the electromagnetic block 3 presses against the side wall of the vehicle body. Release the pressure frame 901, and the compressed spring 903 unfolds to push the pressure frame 901 towards the protective shell 7. The pressure frame 901 presses the push switch 11, and the electromagnetic block 3 is energized, generating an adsorption force, which adsorbs and fixes it to the side wall of the vehicle body, so that the entire detection device can be better adsorbed and supported on the vehicle body.

[0059] The rotating motor 401 is started, which drives the rotating rod 403 to rotate. The rotating rod 403 drives the fixed circular plate 404 and the detection sleeve 401 to rotate. The fixed circular plate 404 can drive the pointer plate 405 to rotate synchronously with the detection sleeve 401, which can determine the angle of torsion during the detection process. The torque sensor 407 detects the rotation torque and limits it through the display 12. After the detected torque reaches the specified torque, the rotation stops, and it is observed whether the projection weld bolt is loose and whether there is obvious deformation or cracks in the weld area at the root of the projection weld bolt. If the projection weld bolt is not loose and has no obvious deformation or cracks, the projection weld bolt is qualified. If the bolt falls off and there are obvious cracks or obvious protrusions in the weld area, the projection weld bolt is unqualified. This method facilitates better detection of the quality of projection welds on the vehicle body, without requiring the inspection personnel to tighten them, thus reducing the workload of the inspection personnel.

[0060] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A body spot welding quality detection device comprising a support plate (1), characterized in that, Also include: The projection welding quality detection structure (4) is arranged on the support plate (1); The support structure (5) is arranged below the support plate (1), and the support structure (5) supports the projection welding quality detection structure (4); The pressing structure (9) is arranged above the projection welding quality detection structure (4).

2. The body stitch quality inspection apparatus according to claim 1, characterized by: The top side wall of the support plate (1) is engraved with an angle scale.

3. The body seam weld quality inspection apparatus of claim 1, wherein: The bottom side wall of the support plate (1) is fixedly connected with four support frames (2) at equal distances, and the bottom side wall of the four support frames (2) is fixedly connected with an electromagnetic block (3).

4. The body stitch quality inspection apparatus according to claim 1, characterized by: The top side wall of the support plate (1) is fixedly connected with a support frame (2) and a display (12), the inner side wall of the support frame (2) is fixedly connected with four support rods (10), four support rods (10) are fixedly connected with a protective shell (7), and the side wall of the protective shell (7) is equally provided with a heat dissipation groove (8).

5. The body stitch quality inspection apparatus according to claim 4, characterized by: The top side wall of the protective shell (7) is fixedly connected with a pressing switch (11), the pressing switch (11) is electrically connected with the electromagnetic block (3), and the display (12) is electrically connected with a torque sensor (407).

6. The body stitch quality inspection apparatus of claim 1 wherein: The projection welding quality detection structure (4) comprises a detection sleeve (401), a rotating motor (401), a rotating rod (403), a fixed circular plate (404), a pointer plate (405), a clamping groove (406) and a torque sensor (407), the rotating rod (403) is rotatably connected to the side wall of the support plate (1) and the protective shell (7), the rotating motor (401) is fixedly connected to the inner side wall of the protective shell (7), the rotating end of the rotating motor (401) is fixedly connected with the rotating rod (403), the torque sensor (407) is fixedly arranged on the rotating rod (403), the side wall of the rotating rod (403) is fixedly connected with the fixed circular plate (404), the fixed circular plate (404) is located between the support plate (1) and the protective shell (7), the side wall of the fixed circular plate (404) is fixedly connected with the pointer plate (405), the bottom of the rotating rod (403) is fixedly connected with the detection sleeve (401), and the bottom side wall of the detection sleeve (401) is provided with a square clamping groove (406).

7. The body stitch quality inspection apparatus according to claim 6, characterized by: The pointer plate (405) is attached to the top side wall of the support plate (1), and the lower half of the side wall of the detection sleeve (401) is circularly enlarged outward.

8. The body stitch quality inspection apparatus of claim 6, wherein: The clamping groove (406) is slidably connected with a square standard part (411), and the side wall of the standard part (411) is provided with a threaded groove (412).

9. The body stitch quality inspection apparatus of claim 1 wherein: The support structure (5) comprises a support rod (501) and a support ring (502), the support ring (502) is rotatably connected to the side wall of the detection sleeve (401), four support rods (501) are fixedly connected to the side wall of the support ring (502) at equal distances, the other end of the four support rods (501) is fixedly connected to the side wall of the support frame (2), and the support rod is arranged obliquely.

10. The body stitch quality inspection apparatus of claim 1 wherein: The pressing structure (9) comprises a pressing frame (901), a telescopic rod (902) and a spring (903), one end of the telescopic rod (902) and the spring (903) is fixedly connected to the inner side wall on the top of the support frame (2), the other end of the telescopic rod (902) and the spring (903) is fixedly connected to the pressing frame (901), and the spring (903) is sleeved on the outer side of the telescopic rod (902).

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