Welding and positioning device for stud on metal plate

Abstract

The utility model discloses a positioning device for welding a stud on a metal plate and a welding gun used for welding the stud, the welding gun is provided with a welding gun head, the positioning device comprises a positioning clamp corresponding to the design position of the stud on a stamping part, the welding gun is detachably assembled in the positioning clamp, and the positioning clamp is further provided with a positioning mechanism for positioning the positioning clamp and the welding gun. The positioning fixture of the positioning device is in a fixed and relative positioning state with the stamping part, so that relative positioning of the welding gun and the stamping part can be realized through the positioning fixture in the state, and the position accuracy of stud welding is ensured. Relative positioning of the welding gun after connection with the positioning mechanism is achieved through the positioning mechanism, so that relative positioning of the stud and the surface of the stamping part is guaranteed, the position accuracy of stud welding is further improved, and the problems that the stud deviates and is not perpendicular to the surface of the stamping part during manual stud welding at present are solved.

Description

TECHNICAL FIELD

[0001] The application relates to a sheet metal stud welding positioning device. BACKGROUND

[0002] Automobile sheet metal is a metal stamping part that constitutes automobile parts and is widely used in various fields of automobile manufacturing, such as vehicle body, chassis, engine, etc. Common automobile sheet metal includes body covering parts (such as doors, roofs, fenders, etc.) and structural parts (such as frames, cross beams, longitudinal beams, etc.). These stamping parts play a supporting, connecting and protecting role in automobile manufacturing and are an indispensable important component of automobiles.

[0003] In automobile manufacturing, welding studs on sheet metal is a common connection method. As a connecting piece, the stud can firmly connect the automobile sheet metal with other parts together, ensuring the integrity and stability of the automobile structure. The stud can also fix wire harnesses, interior parts, carpets, and chassis accessories such as oil pipes and brake oil pipes, ensuring that these parts do not loosen or fall off during automobile driving. The stud makes the assembly process in automobile manufacturing and maintenance more convenient and efficient.

[0004] As shown in the accompanying drawings Figure 1 The automobile wheel cover is a sheet metal for automobiles, and a plurality of studs are designed on the surface at intervals. Currently, the studs can be welded on the designed positions of the wheel cover by a welding gun. During the stud welding process, the position of the stud needs to be accurate to ensure accurate assembly during the later assembly process. Currently, the selection of stud welding position is usually marked by a pen, which inevitably causes position deviation during manual use of the welding gun, thereby affecting accurate assembly during subsequent assembly operation. In addition, during the stud welding process, the stud may not be perpendicular to the surface of the stamping part, which also affects the later assembly. SUMMARY

[0005] In view of the above problems, the present application aims to provide a sheet metal stud welding positioning device that can improve the position accuracy of stud welding, thereby solving the problems of position deviation and non-perpendicularity to the surface of the stamping part during manual stud welding.

[0006] To achieve the above purpose, the technical solution adopted by the present application is as follows: a sheet metal stud welding positioning device, stud welding using a welding gun, the welding gun having a welding gun head, characterized in that: the positioning device comprises a positioning clamp corresponding to the designed position of the stud on the stamping part, the welding gun is detachably assembled in the positioning clamp, and a positioning mechanism is further provided on the positioning clamp to position the welding gun.

[0007] Preferably, the positioning fixture includes a support rod that can be flipped toward the surface of the stamping part, and a positioning ring fitted onto the welding gun head is provided at the end of the support rod.

[0008] Preferably, the positioning mechanism includes arc-shaped clamps symmetrically arranged within the positioning ring, and each arc-shaped clamp has a drive column extending to the outside of the positioning ring on its outer wall.

[0009] Preferably, a drive plate is hinged to one side of the outer circumferential surface of the positioning ring, with one side contacting the end of the drive column, and the inner wall of the other side of the drive plate can abut against the welding gun body.

[0010] The beneficial effects of this application are: the positioning device has a positioning clamp in a fixed and relatively positioned state relative to the stamped part, and in this state, the welding torch and the stamped part can be relatively positioned by the positioning clamp, thereby ensuring the positional accuracy of the stud welding. Furthermore, by achieving relative positioning of the welding torch after connection with the positioning clamp through this positioning mechanism, the relative positioning of the stud and the surface of the stamped part is ensured, thereby further improving the positional accuracy of the stud welding and solving the problems of misalignment and non-perpendicularity to the surface of the stamped part that exist in current manual stud welding. Attached Figure Description

[0011] Figure 1 This is a diagram of a stud welded onto sheet metal.

[0012] Figure 2 This diagram illustrates the stud welding operation performed after the welding gun is positioned using a positioning ring, as described in this application.

[0013] Figure 3 For the purpose of this application Figure 2 A diagram showing the completed stud welded onto the base.

[0014] Figure 4 The welding torch in this application experiences contact wear due to frequent insertion and removal from the positioning ring.

[0015] Figure 5 For the purpose of this application Figure 4 The diagram illustrates how the welding torch head becomes axially misaligned within the positioning ring due to continuous wear.

[0016] Figure 6 This application includes a diagram illustrating the structure of accessories such as an arc-shaped clamping plate within the positioning ring.

[0017] Figure 7 The diagram illustrates how the welding torch head is inserted into the positioning ring and how the welding torch body, through a drive plate, gradually clamps the welding torch head by driving the arc-shaped clamping plate.

[0018] Figure 8 For the purpose of this application Figure 7 The diagram shows how the welding gun head is clamped using an arc-shaped clamp.

[0019] In the figure: 5-welding gun; 51-welding gun head; 6-metal plate; 7-stud. DETAILED DESCRIPTION

[0020] In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions of the present application will be further described below in combination with the drawings and examples.

[0021] Referring to the drawings Figures 1-8 The stud welding positioning device shown in the figure, the stud welding uses a welding gun, the welding gun has a welding gun head, the welding gun is used, the stud is embedded into the welding gun head, the welding gun is driven to make the stud contact the surface of the stamping part, and the welding connection of the stud and the surface of the stamping part is realized. In order to solve the existing stud deviation and the problem that it cannot be perpendicular to the surface of the stamping part, the present application is provided with a positioning device, as shown in Figure 2 It includes a positioning clamp corresponding to the design position of the stud on the stamping part, the welding gun is detachably assembled in the positioning clamp, the positioning clamp is in a fixed and opposite positioning state with the stamping part, and then the relative positioning of the welding gun and the stamping part can be realized through the positioning clamp in this state, and then the position accuracy of the stud welding is ensured.

[0022] Because the welding gun needs to weld studs at multiple different positions on the stamping part, the welding gun and the positioning clamp are detachably connected, and in order to eliminate the connection assembly gap between the welding gun and the positioning clamp, as shown in Figures 6-8 A positioning mechanism for positioning the welding gun is further provided on the positioning clamp, which realizes the relative positioning of the welding gun after being connected with the positioning solution, thereby ensuring the relative positioning of the stud and the surface of the stamping part, and further improving the position accuracy of the stud welding.

[0023] Specifically, as shown in Figure 2 The positioning clamp includes a support rod 1 that can be turned towards the surface of the stamping part, and a positioning ring 2 is provided on the end of the support rod 1 and is sleeved on the welding gun head. Preferably, the support rod 1 is driven to rotate by a gas cylinder (not shown in the figure), and in the state that the support rod 1 is driven to rotate, the positioning ring 2 can be made to approach or contact the surface of the stamping part (parallelly), and in this state, the welding gun is inserted into the positioning ring 2, as shown in Figure 2 The state can realize the positioning welding of the stud, and after the welding is completed, the positioning ring 2 is separated from the surface of the stamping part by driving the support rod 1 in the opposite direction by the gas cylinder, and then the stamping part with the welded stud can be detached from the operation table for assembly and welding operation of the next stamping part.

[0024] Specifically, as shown in Figure 6As shown, the positioning mechanism comprises arc-shaped clamping plates 3 symmetrically arranged in the positioning ring 2, and each arc-shaped clamping plate 3 is provided with a driving column 31 penetrating to the outside of the positioning ring 2. In operation, as shown, Figures 7-8 After embedding the welding head of the welding gun into the positioning ring 2, the arc-shaped clamping plates 3 are moved to contact the outer wall of the welding head by driving the driving columns 31 on both sides, so as to realize clamping of the welding head, eliminate the embedding gap between the welding head and the positioning ring 2, realize relative positioning of the welding head and the positioning ring 2, and improve the positioning accuracy of the stud and the welding point on the surface of the stamping part.

[0025] In order to drive the driving column 31, as shown, Figure 6 a driving plate 4 (preferably an arc-shaped plate structure) is hingedly arranged on the outer circumferential surface of the positioning ring 2, one side of which is in contact with the end of the driving column 31, and the other side of which is in contact with the body of the welding gun. As shown, Figures 7-8 During embedding of the welding head into the positioning ring 2, the body of the welding gun is in contact with the driving plates 4 on both sides, and the body of the welding gun drives the driving plates 4 on both sides to rotate at the hinge points along the arc-shaped surface of the driving plates 4, while the other side of the driving plate 4 drives the driving column 31 to move in the positioning ring 2, and at the same time, the arc-shaped clamping plates 3 gradually contact the outer wall of the welding head, realizing abutting positioning of the welding head, so as to realize accurate positioning of the stud on the surface of the stamping part.

[0026] The principle of the present application is that, during stud welding on the surface of a stamping part, the support rod 1 is driven to rotate by the cylinder of the fixed positioning clamp, and the positioning ring 2 is close to or in contact with the surface of the stamping part (parallelly), the welding gun is inserted between the positioning ring 2 and the symmetric arc-shaped clamping plates 3 in this state, during embedding of the welding gun, the body of the welding gun is in contact with the driving plates 4 symmetrically hinged on both sides of the positioning ring 2, and the body of the welding gun drives the driving plates 4 to rotate along the arc-shaped surface of the driving plates 4, while the other side of the driving plate 4 drives the driving column 31 to move in the positioning ring 2, and at the same time, the arc-shaped clamping plates 3 gradually contact the outer wall of the welding head, realizing abutting positioning of the welding head, so as to realize accurate positioning of the stud on the surface of the stamping part, and in this state, the stud is welded on the surface of the stamping part, so as to realize accurate welding operation of the stud on the surface of the stamping part. After multiple studs are welded in the same manner, the support rod 1 and the positioning ring 2 are driven to rotate in the opposite direction by the cylinder to separate from the surface of the stamping part, so as to disassemble the welded stamping part and continuously weld the next stamping part.

[0027] The basic principles, main features and advantages of the present application are shown and described above. Various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A device for positioning a stud for welding on sheet metal, the stud being welded using a welding gun, the welding gun having a welding gun head, characterized in that: The positioning device comprises a positioning clamp corresponding to the design position of the stud on the stamping part, and the welding gun is detachably assembled in the positioning clamp, and a positioning mechanism is further arranged on the positioning clamp to position the welding gun; The positioning clamp comprises a support rod (1) which can be turned towards the surface of the stamping part, and a positioning ring (2) is arranged on the end of the support rod (1) to be sleeved on the head of the welding gun; The positioning mechanism comprises an arc-shaped clamping plate (3) which is symmetrically arranged in the positioning ring (2), and a driving column (31) is arranged on the outer wall of each arc-shaped clamping plate (3) to penetrate to the outside of the positioning ring (2); A driving plate (4) is hingedly arranged on one side of the outer peripheral surface of the positioning ring (2), and the other side of the driving plate (4) is in contact with the end of the driving column (31), and the other side of the driving plate (4) is in contact with the body of the welding gun.

Images