Supporting device and welding gun

Abstract

The utility model belongs to the technical field of vehicle welding tools, and particularly relates to a supporting device and a welding gun. The supporting device comprises a coil assembly and a supporting piece installed on the welding gun body, a first through hole and an annular hole surrounding the first through hole are formed in the supporting piece, and the first through hole communicates with a welding arm of the welding gun body. The coil assembly is installed in the annular hole and used for generating electromagnetic adsorption force when powered on. In the utility model, the supporting device is integrated on the welding gun body, the supporting device does not need to be independently arranged for different vehicle body supporting parts, and different vehicle types can share one supporting device, so that the manufacturing efficiency of the vehicle is improved, and the manufacturing cost and the mounting cost of the supporting device are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle welding tooling, and particularly relates to a supporting device and a welding torch. Background Technique

[0002] During the vehicle manufacturing process, it is often necessary to use the welding process to fixedly install studs on the vehicle body to connect different components. Currently, in order to ensure the stability of the stud welding on the vehicle body, when welding studs, it is often necessary to use a supporting workpiece to support the vehicle body sheet metal to prevent quality problems such as deformation of the welding surface due to the too thin vehicle body.

[0003] However, in the prior art, since the stud welding parts of different types of vehicles are different, it is required to arrange supporting workpieces with different structures and shapes corresponding to different stud welding parts. In this way, not only does it increase the manufacturing and installation costs of arranging the supporting workpieces, but interference may occur between the supporting workpieces arranged at different welding parts, thus affecting the vehicle manufacturing efficiency. Summary of the Utility Model

[0004] Aiming at the technical problem of affecting the vehicle manufacturing efficiency caused by arranging different supporting workpieces at different stud welding parts in the prior art, the utility model provides a supporting device and a welding torch.

[0005] To solve the above problems, the first embodiment of the utility model provides a supporting device, which includes a coil assembly and a support member installed on the welding torch body. The support member is provided with a first through hole and an annular hole arranged around the first through hole. The first through hole communicates with the welding arm of the welding torch body; the coil assembly is installed in the annular hole and is used to generate an electromagnetic adsorption force when energized.

[0006] Optionally, the support member is further provided with a cooling flow channel.

[0007] Optionally, the support member includes a first support column and a second support column connected coaxially. The outer diameter of the first support column is smaller than the outer diameter of the second support column. The first through hole penetrates through the first support column and the second support column. The annular hole is arranged on the first support column and the second support column. The cooling flow channel is arranged on the second support column.

[0008] Optionally, the supporting device further includes a connecting member. The support member is installed on the welding torch body through the connecting member; the connecting member is provided with a second through hole, and the welding arm of the welding torch body passes through the second through hole and the first through hole.

[0009] Optionally, the connecting member includes a disc body and a plurality of arms annularly spaced and connected to the disc body. The second through hole is arranged on the disc body. The disc body is connected to the support member, and the arms are connected to the welding torch body.

[0010] Optionally, a first mounting hole is provided on the disk body, and a second mounting hole is further provided on the support member; the disk body is fixedly connected to the support member by a first fixing member inserted into the first mounting hole and the second mounting hole.

[0011] Optionally, a plurality of the first mounting holes are spaced on the disk body, and at least one of the first mounting holes is provided between any two adjacent arms.

[0012] Optionally, a third mounting hole is provided on each of the arms; the arm is fixedly connected to the welding torch body by a second fixing member inserted into the third mounting hole.

[0013] Another embodiment of the present invention further provides a welding torch, including a welding torch body and the above-mentioned support device; a welding arm communicating with the first through hole is provided on the welding torch body.

[0014] Optionally, a switch member electrically connected to the coil assembly is further provided on the welding torch body, and the switch member is used to control the energization or de-energization of the coil assembly.

[0015] In the present invention, a first through hole and an annular hole surrounding the first through hole are provided on the support member, and the first through hole communicates with the welding arm of the welding torch body; the coil assembly is installed in the annular hole, the support member is installed on the welding torch body, and a connecting member (such as a stud, etc.) can pass through the first through hole and be installed on the welding torch body. During the process of welding the connecting member on the welding torch body to the vehicle body, after the coil assembly is energized, the support member sucks the vehicle body, and the welding torch body can weld the connecting member on it to the vehicle body. Moreover, the support member can play a role in supporting the vehicle body during the welding of the connecting member, avoiding accidents of vehicle body deformation during the welding process, and ensuring the quality of welding the connecting member to the vehicle body. In addition, the support device is integrated on the welding torch body, eliminating the need to separately set up support devices for different vehicle body support parts, and different vehicle models can share one support device, improving the manufacturing efficiency of the vehicle and reducing the manufacturing cost and installation cost of the support device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the drawings and embodiments.

[0017] Figure 1 is a partial structural schematic diagram of a welding torch provided by an embodiment of the present invention;

[0018] Figure 2 is a cross-sectional view of the coil assembly of the support device provided by an embodiment of the present invention installed on the support member;

[0019] Figure 3Schematic diagram of the connecting member of the supporting device provided by an embodiment of the present utility model;

[0020] Figure 4 Cross-sectional view when the welding torch adsorbs the vehicle body provided by an embodiment of the present utility model;

[0021] Figure 5 Cross-sectional view when the welding torch welds the connecting member to the vehicle body provided by an embodiment of the present utility model;

[0022] Figure 6 Cross-sectional view when the welding torch separates from the connecting member provided by an embodiment of the present utility model.

[0023] The reference numerals in the specification are as follows:

[0024] 1. Coil assembly; 2. Support member; 21. First through hole; 22. Annular hole; 23. Cooling flow channel; 24. First support column; 25. Second support column; 3. Connecting member; 31. Second through hole; 32. Disk body; 33. Arm; 34. First mounting hole; 35. Third mounting hole; 4. Welding torch body; 5. Vehicle body; 6. Connecting member. Detailed implementation manners

[0025] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the following further describes the utility model in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] It should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "middle", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.

[0027] As Figure 1 and Figure 2 shown, a support device provided by the first embodiment of the present utility model includes a coil assembly 1 and a support member 2 installed on the welding torch body 4. The support member 2 is provided with a first through hole 21 and an annular hole 22 surrounding the first through hole 21. The first through hole 21 communicates with the welding arm of the welding torch body 4. The coil assembly 1 is installed in the annular hole 22 and is used to generate an electromagnetic adsorption force when energized. It can be understood that the annular hole 22 is coaxially arranged with the first through hole 21. The coil assembly 1 includes an iron core and a coil wound around the iron core, and the iron core is installed in the annular hole 22.

[0028] In the present utility model, a first through hole 21 and an annular hole 22 surrounding the first through hole 21 are provided on a support member 2. The first through hole 21 communicates with a welding arm of a welding torch body 4. A coil assembly 1 is installed in the annular hole 22, and the support member 2 is installed on the welding torch body 4. A connecting member 6 (such as a stud, etc.) can pass through the first through hole 21 and be installed on the welding torch body 4. During the process of welding the connecting member 6 on the welding torch body 4 to a vehicle body 5, after the coil assembly 1 is energized, the support member 2 will suck the vehicle body 5, and then the welding torch body 4 can weld the connecting member 6 thereon to the vehicle body 5. Moreover, the support member 2 can play a role in supporting the vehicle body 5 during the welding of the connecting member 6, avoiding deformation of the vehicle body 5 during the welding process and ensuring the quality of welding the connecting member 6 to the vehicle body 5. In addition, the support device is integrated on the welding torch body 4, eliminating the need to separately set up support devices for different vehicle body support parts, and different vehicle models can share one support device, improving the manufacturing efficiency of the vehicle and reducing the manufacturing cost and installation cost of the support device.

[0029] In one embodiment, as Figure 2 shown, a cooling flow channel 23 is further provided on the support member 2. It can be understood that the cooling flow channel 23 is disposed opposite to the support surface on the support member 2, and a coolant can be introduced into the cooling flow channel 23. The coolant flowing in the cooling flow channel 23 can reduce the temperature of the support member 2. During the welding process, the low-temperature support member 2 can absorb part of the heat in the welding area, avoiding accidents such as welding through of welding parts such as the vehicle body 5.

[0030] In one embodiment, as Figure 1 and Figure 2 shown, the support member 2 includes a first support column 24 and a second support column 25 connected coaxially. The outer diameter of the first support column 24 is smaller than the outer diameter of the second support column 25. The first through hole 21 penetrates through the first support column 24 and the second support column 25. The annular hole 22 is provided on the first support column 24 and the second support column 25, and the cooling flow channel 23 is provided on the second support column 25. It can be understood that the first support column 24 and the second support column 25 are integrally formed. One end of the second support column 25 away from the first support column 24 is the support surface. The outer diameter of the second support column 25 is larger than the outer diameter of the first support column 24, so that the support member 2 has a support surface with a larger area, improving the stability of the support member 2 in supporting the vehicle body 5. In addition, the second support column 25 has a larger area, providing a larger installation area for the cooling flow channel 23, and more cooling flow channels 23 can be provided on the support member 2, improving the heat dissipation efficiency of the support member 2.

[0031] In one embodiment, as Figures 1 to 3As shown, the support device further includes a connecting member 3, and the support member 2 is mounted on the welding torch body 4 through the connecting member 3; a second through hole 31 is provided on the connecting member 3, and the welding arm of the welding torch body 4 passes through the second through hole 31 and the first through hole 21. It can be understood that the support member 2 can be sleeved on the welding torch body 4 through the first through hole 21, and the connecting member 3 can be sleeved on the welding torch body 4 through the second through hole 31. In this embodiment, the disassembly and assembly operation between the support device and the welding torch body 4 is simple.

[0032] In one embodiment, as Figure 1 and Figure 3 shown, the connecting member 3 includes a disk body 32 and a plurality of arms 33 annularly spaced and connected to the disk body 32. The second through hole 31 is provided on the disk body 32. The disk body 32 is connected to the support member 2, and the arms 33 are connected to the welding torch body 4. It can be understood that the arms 33 and the disk body 32 are integrally formed; the plurality of arms 33 are annularly spaced around the second through hole 31, and the number of the arms 33 can be set according to actual needs. For example, 3, 4, etc. arms 33 are provided.

[0033] Specifically, after the connecting member 3 is sleeved on the welding torch body 4, fixing members such as screws and bolts can be used to fixedly connect between the arms 33 and the welding torch body 4, ensuring the stability of the connecting member 3 mounted on the welding torch body 4.

[0034] In one embodiment, as Figure 3 shown, a first mounting hole 34 is provided on the disk body 32, and a second mounting hole (not shown in the figure) is further provided on the support member 2; the disk body 32 is connected to the support member 2 by a first fixing member (such as a screw or a bolt) inserted into the first mounting hole 34 and the second mounting hole. It can be understood that a plurality of the first mounting holes 34 and the second mounting holes can be set according to actual needs. For example, 3, 4, etc. first mounting holes 34 and second mounting holes are provided.

[0035] Specifically, after the connecting member 3 and the support member 2 are docked, the first fixing member is inserted into the first mounting hole 34 and the second mounting hole, ensuring the tightness of the connection between the support member 2 and the connecting member 3.

[0036] In one embodiment, as Figure 3As shown, a plurality of the first mounting holes 34 are spaced apart on the disk body 32, and at least one of the first mounting holes 34 is provided between any two adjacent support arms 33. It can be understood that one support arm 33 is provided between two adjacent first mounting holes 34, and one first mounting hole 34 is provided between two adjacent support arms 33. In this embodiment, the connecting member 3 and the supporting member 2 are connected through the first mounting hole 34. The force application point between the connecting member 3 and the supporting member 2 is the first force application point. The connecting member 3 is connected to the welding torch body 4 through the support arm 33. The force application point between the connecting member 3 and the welding torch body 4 is the second force application point. The first force application point and the second force application point are alternately distributed, so that the force on the connecting member 3 is uniform, ensuring the stability of the support device mounted on the welding torch body 4.

[0037] In one embodiment, as Figure 3 shown, a third mounting hole 35 is provided on each of the support arms 33; the support arm 33 is fixedly connected to the welding torch body 4 through a second fixing member (such as a screw or a bolt) inserted into the third mounting hole 35. It can be understood that the center line of the first mounting hole 34 and the center line of the third mounting hole 35 are perpendicular. Specifically, after the connecting member 3 is sleeved on the welding torch body 4, the second fixing member is used to pass through the third mounting hole 35 and then connect to the welding torch body 4, thus ensuring the stability of the connecting member 3 mounted on the welding torch body 4.

[0038] In a specific embodiment, the suction formula of the coil assembly 1 is:

[0039] F = (Φ / 5000)2×1 / S×1 / (1 + αδ),

[0040] where: Φ is the magnetic flux in the air gap, S is the cross-sectional area of the iron core (mm), α is the correction coefficient, generally taking 3 - 5, δ is the air gap length (cm); the magnetic flux Φ in the air gap = IW×GZ×108, where GZ = μ0×πdc2 / (4δ), I is the power supply current, W is the number of turns of the coil, the air permeability coefficient μ0 = 1.25×10-8H / cm, and dc is the diameter of the iron core.

[0041] Through the above formula, the coil assembly 1 can be reasonably designed so that the suction of the coil assembly 1 is within a certain range. After verification, it is confirmed that the suction in the range of 50 - 300N is a suitable suction range. When the suction of the coil assembly 1 is too small, it will not be able to withstand the downward upsetting force during stud welding. When the suction of the coil assembly 1 is too large, it will cause the thin plate of the vehicle body 5 to deform.

[0042] As Figure 1As shown in the figure, another embodiment of the present utility model further provides a welding torch, which includes a welding torch body 4 and the above-mentioned supporting device; a welding arm communicating with the first through hole 21 is provided on the welding torch body 4.

[0043] In the present utility model, the welding head of the welding torch body 4 can pass through the first through hole 21 to clamp and connect components 6 (such as studs, etc.); as Figures 4 to 6 shown, during the process of the welding torch body 4 installing the connecting component 6 thereon onto the vehicle body 5, the coil assembly 1 is energized, the support member 2 will suck and support the vehicle body 5, and the welding torch body 4 can weld the connecting component 6 thereon onto the vehicle body 5. The support member 2 can play a role in supporting the vehicle body 5 during the welding process of the connecting component 6, avoiding accidents of deformation of the vehicle body 5 during the welding process, and ensuring the quality of the connection of the connecting component 6 to the vehicle body 5. In addition, the support device is integrated on the welding torch body 4, eliminating the need to separately set up support devices for different vehicle body support parts, and different vehicle models can share one support device, improving the manufacturing efficiency of the vehicle and reducing the manufacturing cost and installation cost of the support device.

[0044] In one embodiment, a switch member (not shown in the figure) electrically connected to the coil assembly 1 is further provided on the welding torch body 4, and the switch member is used to control the energization or de-energization of the coil assembly 1. It can be understood that the staff can trigger the switch member to control whether the coil assembly 1 is energized, and thus control whether the support member 2 has magnetic attraction. In this embodiment, the switch member for controlling whether the coil assembly 1 is energized is integrated on the welding torch body 4, improving the convenience of use of the welding torch.

[0045] The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A support device, characterized in that, It includes a coil assembly and a support member mounted on the welding gun body. The support member is provided with a first through hole and an annular hole arranged around the first through hole. The first through hole communicates with the welding arm of the welding gun body; the coil assembly is installed in the annular hole and is used to generate an electromagnetic adsorption force when energized.

2. The support device according to claim 1, wherein The support member is further provided with a cooling flow channel.

3. The support device according to claim 2, wherein The support member includes a first support column and a second support column connected coaxially. The outer diameter of the first support column is smaller than that of the second support column. The first through hole penetrates through the first support column and the second support column. The annular hole is arranged on the first support column and the second support column. The cooling flow channel is arranged on the second support column.

4. The support device according to claim 1, characterized in that, The support device further includes a connecting member. The support member is installed on the welding gun body through the connecting member; the connecting member is provided with a second through hole, and the welding arm of the welding gun body passes through the second through hole and the first through hole.

5. The support device according to claim 4, characterized in that, The connecting member includes a disc body and a plurality of support arms annularly and spacedly connected to the disc body. The second through hole is arranged on the disc body. The disc body is connected to the support member, and the support arms are connected to the welding gun body.

6. The support device according to claim 5, characterized in that, The disc body is provided with a first mounting hole, and the support member is further provided with a second mounting hole; the disc body is connected to the support member through a first fixing member inserted into the first mounting hole and the second mounting hole.

7. The support device according to claim 6, characterized in that, A plurality of the first mounting holes are arranged at intervals on the disc body, and at least one of the first mounting holes is provided between any two adjacent support arms.

8. The support device according to claim 5, wherein, Each support arm is provided with a third mounting hole; the support arm is fixedly connected to the welding gun body through a second fixing member inserted into the third mounting hole.

9. A welding torch, characterized in that, It includes a welding gun body and the support device according to any one of claims 1 to 8; the welding gun body is provided with a welding arm communicating with the first through hole.

10. The welding torch according to claim 9, characterized in that, The welding gun body is further provided with a switch member electrically connected to the coil assembly. The switch member is used to control the energization or de-energization of the coil assembly.

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