A stud welding gun head structure

Abstract

The utility model relates to the field of stud welding gun, disclose a kind of stud welding gun head structure, including gun body, the surface of gun body is fixedly connected with connecting seat, the surface of connecting seat is equipped with mounting groove, the inner wall of connecting seat mounting groove is contacted with contact lever, the surface of connecting seat is provided with centring assembly, the centring assembly includes fixed disc, the outer cam surface of guide disc is fixedly connected with connecting block, the inner wall of connecting block is penetrated and is connected with screw rod with screw thread, when stud is inserted into the cavity of fixed disc and guide disc, stud pushes centring seat to move outward, simultaneously drives guide disc to rotate, scroll spring stores elastic potential energy, after stud stops pushing centring seat, scroll spring releases elastic potential energy, drives guide disc and centring seat to reset, makes the bottom end plane of centring seat and stud outer wall contact, carries out accurate positioning to stud, ensure that stud is always in central position.

Description

Technical Field

[0001] This utility model relates to the field of stud welding guns, specifically to a stud welding gun head structure. Background Technology

[0002] In the field of welding, stud welding is a commonly used welding process that is widely applied in industries such as automobile manufacturing, machining, and construction.

[0003] The torch head structure of the stud welding torch is a key component for stud welding, and its performance directly affects the welding quality and efficiency.

[0004] However, the centering function of traditional stud welding gun heads is not perfect, and they cannot accurately position the studs, making them prone to displacement during welding and affecting the welding effect. Therefore, a stud welding gun head structure is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a stud welding gun head structure.

[0006] The technical solution adopted by this utility model to solve the above problems is: a stud welding gun head structure, including a gun body, a connecting seat fixedly connected to the surface of the gun body, an installation groove opened on the surface of the connecting seat, a contact rod contacting the inner wall of the mounting groove of the connecting seat, and a centering component provided on the surface of the connecting seat.

[0007] The centering assembly includes a fixed disk, and a guide disk is elastically connected to the inner sidewall of the fixed disk via a spiral spring. A linear guide groove is formed on the inner sidewall of the fixed disk, and a centering seat is slidably connected to the inner wall of the linear guide groove of the fixed disk. A connecting block is fixedly connected to the outer arc surface of the guide disk, and a screw is threaded through the inner wall of the connecting block. A protruding rod is fixedly connected to the surface of the centering seat.

[0008] As a further description of the above technical solution:

[0009] A fixing block is fixedly connected to the surface of the contact rod, and a limit ball is elastically connected to the inner wall of the mounting groove of the connecting seat through a return spring.

[0010] As a further description of the above technical solution:

[0011] The fixed plate is fixedly connected to the surface of the connecting seat, and the guide plate is rotatably connected to the surface of the front end of the fixed plate.

[0012] As a further description of the above technical solution:

[0013] One end of the spiral spring is fixedly connected to the inner side wall of the fixed disk, and the other end of the spiral spring is fixedly connected to the inner surface of the guide disk.

[0014] As a further description of the above technical solution:

[0015] The surface of the guide plate is provided with an arc-shaped guide groove, and the protruding rod passes through and is slidably connected to the inner wall of the arc-shaped guide groove of the guide plate.

[0016] As a further description of the above technical solution:

[0017] The end of the screw contacts the outer arc surface of the fixed disk.

[0018] As a further description of the above technical solution:

[0019] One end of the reset spring is fixedly connected to the top of the outer wall of the limiting ball, and the other end of the reset spring is fixedly connected to the top of the inner wall of the mounting groove of the connecting seat. The limiting ball is slidably connected to the top of the inner wall of the mounting groove of the connecting seat.

[0020] As a further description of the above technical solution:

[0021] The top of the fixing block is provided with a ball groove, and the bottom end of the limiting ball contacts the inner wall of the ball groove at the top of the fixing block. The side wall of the connecting seat mounting groove is provided with a semi-annular groove, and the outer wall of the fixing block contacts the inner wall of the semi-annular groove of the connecting seat.

[0022] Compared with the prior art, this utility model has the following advantages and effects:

[0023] 1. In this utility model, when the stud is inserted into the cavity of the fixed plate and the guide plate, the stud pushes the centering seat to move outward, and at the same time drives the guide plate to rotate. The spiral spring stores elastic potential energy. When the stud stops pushing the centering seat, the spiral spring releases the elastic potential energy, drives the guide plate and the centering seat to reset, so that the bottom plane of the centering seat contacts the outer wall of the stud, accurately positioning the stud and ensuring that the stud is always in the center position.

[0024] 2. The key to achieving this feature in this invention is the quick-release and replacement design of the contact rod. When the contact rod wears down due to prolonged use, affecting the weld flatness, no complicated tools or technicians are required. Simply rotate the fixing block to disengage the limiting ball from the ball groove of the fixing block, and the contact rod can be easily removed for replacement. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an embodiment of the present utility model.

[0026] Figure 2 This is a partial cross-sectional view of the rear end of the fixed disk according to an embodiment of the present invention.

[0027] Figure 3This is a schematic diagram of the structure of the fixed disk and guide disk in the separated state according to an embodiment of the present invention.

[0028] Figure 4 This is a partial cross-sectional view of the bottom end of the connector according to an embodiment of the present invention.

[0029] Figure 5 This is a three-dimensional structural diagram of the fixing block according to an embodiment of the present invention. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0031] See Figures 1-5 This embodiment describes a stud welding torch head structure, including a torch body 1, which is a stud welding torch shell in the prior art. A connecting seat 2 is fixedly connected to the surface of the torch body 1. The surface of the connecting seat 2 is provided with an installation groove. The inner wall of the installation groove of the connecting seat 2 contacts a contact rod 4. By setting three sets of contact rods 4, the torch body 1 can always be kept in the same plane during the welding process, thereby ensuring the flatness of the bolt positioning and preventing tilting. A centering component 3 is provided on the surface of the connecting seat 2.

[0032] Reference Figure 2 and Figure 3 The centering component 3 includes a fixed disk 31, which is fixedly connected to the surface of the connecting seat 2. A guide disk 33 is rotatably connected to the front surface of the fixed disk 31. The guide disk 33 is elastically connected to the inner sidewall of the fixed disk 31 via a spiral spring 32. One end of the spiral spring 32 is fixedly connected to the inner sidewall of the fixed disk 31, and the other end is fixedly connected to the inner surface of the guide disk 33. The function of the spiral spring 32 is to self-reset the position of the guide disk 33 after rotation, and to guide... The steering wheel 33 can only rotate circumferentially on the surface of the fixed disk 31. A linear guide groove is provided on the inner side wall of the fixed disk 31. A centering seat 34 is slidably connected to the inner wall of the linear guide groove of the fixed disk 31. A protrusion is provided at the rear end of the centering seat 34. A guide groove that fits the protrusion is provided on the side wall of the fixed disk 31, so that the centering seat 34 can only move linearly on the inner wall of the fixed disk 31. A connecting block 35 is fixedly connected to the outer arc surface of the guide disk 33. A screw 36 is threaded through the inner wall of the connecting block 35.

[0033] The end of the screw 36 contacts the outer arc surface of the fixed disk 31. When the guide disk 33 rotates, it drives the connecting block 35 to rotate synchronously. After rotation, the screw 36 is rotated to penetrate the interior of the connecting block 35 and contact the outer arc surface of the fixed disk 31. The self-locking property of the connecting block 35 fixes the position of the guide disk 33 after rotation. A protruding rod 37 is fixedly connected to the surface of the centering seat 34. The surface of the centering seat 34 is provided with an inclined surface, so that when the stud is inserted into the cavity of the fixed disk 31 and the guide disk 33, it will contact the inclined surface of the three sets of centering seats 34, thereby pushing the three sets of centering seats 34 to move outward synchronously. After moving to the end, the guide disk 33 will be subjected to... The elastic action of the spiral spring 32 restores the guide plate 33, the protruding rod 37, and the centering seat 34 to their initial positions, allowing the bottom plane of the centering seat 34 to contact the outer wall of the stud for positioning and ensuring it remains centered. The surface of the guide plate 33 has an arc-shaped guide groove, through which the protruding rod 37 is slidably connected. By having an annular groove on the surface of the guide plate 33, when the inclined surface of the centering seat 34 is squeezed by the stud, the centering seat 34 moves within the straight groove of the fixed plate 31. Simultaneously, the protruding rod 37 follows the movement of the centering seat 34 and slides within the arc-shaped groove of the guide plate 33, thereby causing the guide plate 33 to rotate.

[0034] Reference Figure 1 and Figures 4-5 A fixing block 5 is fixedly connected to the surface of the contact rod 4. A limit ball 7 is elastically connected to the inner wall of the mounting groove of the connecting seat 2 via a return spring 6. One end of the return spring 6 is fixedly connected to the top of the outer wall of the limit ball 7, and the other end of the return spring 6 is fixedly connected to the top of the inner wall of the mounting groove of the connecting seat 2. The function of the return spring 6 is to automatically reset the position of the limit ball 7 after it has been squeezed and moved by the fixing block 5. The limit ball 7 is slidably connected to the top of the inner wall of the mounting groove of the connecting seat 2. A ball groove is opened at the top of the fixing block 5. The bottom end of the limit ball 7 contacts the inner wall of the ball groove at the top of the fixing block 5. The contact between the two causes the fixing block 5 to drive the contact rod 4 to be installed in the connecting seat. The inner wall of the connector 2 is fixed to prevent the contact rod 4 from falling off without external force. The side wall of the mounting groove of the connector 2 is provided with a semi-annular groove. The outer wall of the fixing block 5 contacts the inner wall of the semi-annular groove of the connector 2. The outer diameter of the semi-annular groove of the connector 2 matches the fixing block 5. When the contact rod 4 is inserted into the mounting groove of the connector 2, the fixing block 5 can be rotated and slid on the inner wall of the semi-annular groove of the connector 2. When it is rotated to the end of the semi-annular groove, it will be supported and fixed by the limiting ball 7. This allows for quick disassembly and replacement of the contact rod 4, avoiding wear and tear of the contact rod 4 after long-term use, which would lead to unevenness and affect the flatness of the welding.

[0035] Working principle: A fixing block 5 is fixed to the surface of the contact rod 4. The contact rod 4 is inserted into the mounting groove of the connecting seat 2, and the fixing block 5 is rotated to slide on the inner wall of the semi-annular groove of the connecting seat 2. When the fixing block 5 rotates to the end of the semi-annular groove, the ball groove at the top of the fixing block 5 contacts the bottom end of the limiting ball 7. Under the action of the return spring 6, the limiting ball 7 is locked into the ball groove, fixing the fixing block 5 and the contact rod 4 to the inner wall of the connecting seat 2, so that the contact rod 4 will not fall off when there is no external force.

[0036] When the stud is inserted into the cavity of the fixed disk 31 and the guide disk 33, the stud contacts the inclined surface of the three sets of centering seats 34, pushing the three sets of centering seats 34 to move outward synchronously. When the centering seat 34 moves, the protrusion 37 on its surface slides in the arc-shaped guide groove of the guide disk 33, causing the guide disk 33 to rotate. At the same time, the spiral spring 32 is twisted, storing elastic potential energy.

[0037] When the centering seat 34 moves to the end, the stud stops pushing the centering seat 34. At this time, the spiral spring 32 releases its elastic potential energy, causing the guide plate 33 to rotate in the opposite direction. The guide plate 33 drives the centering seat 34 to move inward through the arc-shaped guide groove and the protrusion 37, so that the bottom plane of the centering seat 34 contacts the outer wall of the stud, positioning the stud and ensuring that the stud is always in the center position. After the guide plate 33 rotates, the screw 36 is rotated so that it passes through the connecting block 35 and contacts the outer arc surface of the fixed plate 31. The self-locking property of the connecting block 35 is used to fix the position of the guide plate 33 after rotation, ensuring the positioning stability of the centering seat 34 for the stud.

[0038] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A stud welding gun head structure comprising a gun body (1), characterised in that: A connecting seat (2) is fixedly connected to the surface of the gun body (1). A mounting groove is provided on the surface of the connecting seat (2). A contact rod (4) is in contact with the inner wall of the mounting groove of the connecting seat (2). A centering component (3) is provided on the surface of the connecting seat (2). The centering component (3) includes a fixed disk (31), and a guide disk (33) is elastically connected to the inner side wall of the fixed disk (31) by a spiral spring (32). A straight guide groove is provided on the inner side wall of the fixed disk (31), and a centering seat (34) is slidably connected to the inner wall of the straight guide groove of the fixed disk (31). A connecting block (35) is fixedly connected to the outer arc surface of the guide disk (33), and a screw (36) is threaded through the inner wall of the connecting block (35). A protruding rod (37) is fixedly connected to the surface of the centering seat (34).

2. A gun tip structure for a stud welding gun according to claim 1, wherein: The surface of the contact rod (4) is fixedly connected to a fixing block (5), and the inner wall of the mounting groove of the connecting seat (2) is elastically connected to a limiting ball (7) by a reset spring (6).

3. A gun tip structure for a stud welding gun as defined in claim 1, wherein: The fixed disk (31) is fixedly connected to the surface of the connecting seat (2), and the guide disk (33) is rotatably connected to the surface of the front end of the fixed disk (31).

4. A gun tip structure for a stud welding gun as defined in claim 1, wherein: One end of the spiral spring (32) is fixedly connected to the inner side wall of the fixed disk (31), and the other end of the spiral spring (32) is fixedly connected to the inner surface of the guide disk (33).

5. A gun tip structure for a stud welding gun as defined in claim 1, wherein: The surface of the guide plate (33) is provided with an arc-shaped guide groove, and the protruding rod (37) passes through and is slidably connected to the inner wall of the arc-shaped guide groove of the guide plate (33).

6. A gun tip structure for a stud welding gun according to claim 1, wherein: The end of the screw (36) is in contact with the outer arc surface of the fixed plate (31).

7. A gun tip structure for a stud welding gun as defined in claim 2 wherein: One end of the reset spring (6) is fixedly connected to the top of the outer wall of the limiting ball (7), and the other end of the reset spring (6) is fixedly connected to the top of the inner wall of the mounting groove of the connecting seat (2). The limiting ball (7) is slidably connected to the top of the inner wall of the mounting groove of the connecting seat (2).

8. A gun tip structure for a stud welding gun as defined in claim 2, wherein: The top of the fixing block (5) is provided with a ball groove, the bottom of the limiting ball (7) is in contact with the inner wall of the ball groove at the top of the fixing block (5), the side wall of the mounting groove of the connecting seat (2) is provided with a semi-annular groove, and the outer wall of the fixing block (5) is in contact with the inner wall of the semi-annular groove of the connecting seat (2).

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