Welding gun structure
Through the coordinated design of the main components and the adjustment components, the problem of positional deviation and wear caused by the internal force of the cable bundle during long-term repetitive operations of the welding torch is solved, thus achieving stability of welding accuracy and durability of the connection structure.
Patent Information
- Application Number
- CN202522427603.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-17
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-11-17
AI Technical Summary
In long-term repetitive operations, existing welding torches suffer from positional deviations at the end due to the torsional restoring torque and suspension tension of the cable bundle, which affects welding accuracy, accelerates wear on connection parts, and shortens service life.
The design employs a collaborative approach between the main components and the adjustment components, including the welding torch body, wire feed drive, adjustment joint, buffer, and ball joint structure. The adjustment joint fixes the welding torch posture, the buffer absorbs internal forces, and the ball joint structure absorbs bending tension and torsional forces, ensuring the welding torch's positional accuracy and connection stability.
It effectively prevents the welding torch from deviating unexpectedly, ensures welding accuracy, reduces wear on the connection parts, and extends the service life of the welding torch.
Smart Images
Figure CN223718512U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to welding equipment technical field, especially a welding torch structure. BACKGROUND
[0002] At present, the commonly used welding torch, especially the high-power welding torch, the gun body is connected with the wire feeding hose and the cable (hereinafter collectively referred to as "cable bundle") through threads or quick connectors. In actual welding operation, especially when the automatic welding equipment or mechanical arm holds the welding torch for long-time and repetitive operation, the cable bundle will generate a continuous torsional restoring moment or a suspended tension due to its own stiffness and weight.
[0003] This "internal force" generated by the cable bundle will be transmitted to the welding torch body through the connecting point, which will cause some problems. First, for automatic equipment, this internal force will form a deflection moment that is difficult to be compensated by the program, which acts on the clamping end of the welding torch, causing a micron-level deviation between the actual working position of the welding torch end and the program setting position. Long-term accumulation will affect the quality of high-precision welding, especially when precise weld tracking is performed. Second, the continuous internal force will act on the connection part of the welding torch and the cable bundle, causing the connection thread to be loose, the internal spring and ball of the quick connector to fatigue prematurely, or the wear of the sealing ring at the connection to be aggravated, causing medium leakage or poor contact, significantly shortening the service life of the connection structure. The existing technology focuses on the cooling, insulation or lightweight of the welding torch, but generally ignores the hidden but exact negative impact of the internal force of the cable bundle on the welding operation precision and the durability of the connection structure. SUMMARY
[0004] In view of the problems existing in the prior art, the utility model is proposed.
[0005] To solve the above technical problems, the utility model provides the following technical scheme: a welding torch structure, which comprises a main body assembly, including a welding torch body, a wire feeding driving element arranged inside the welding torch body, a torch barrel arranged at the other end of the welding torch body, and a welding torch head arranged at the end of the torch barrel, an installation base is arranged on the outer wall of the welding torch body, and an adjusting joint is arranged on the outer wall of the installation base and is used for fixing the welding torch body through the adjusting joint.
[0006] The adjusting assembly comprises an installation base arranged at the end of the welding torch body, an installation plate is arranged on the end face of the installation base, a buffer and a first elastic element are arranged on the end face of the installation plate, a movement plate is further arranged at the end of the installation plate, and a movement element is arranged at the end of the movement plate.
[0007] As a preferred scheme of the welding gun structure of the utility model, wherein: the moving part includes the installation shell arranged at the end of the moving plate, the inner wall of the installation shell is provided with a rotating disc, and the end of the rotating disc is further provided with a driving ring, the outer wall of the driving ring is provided with a half gear, the half gear is engaged with the worm arranged on the inner wall of the installation shell and is driven to rotate on the inner wall of the installation shell by the worm.
[0008] As a preferred scheme of the welding gun structure of the utility model, wherein: the end face of the installation shell is arrayed with a sliding groove, and the inner part of the sliding groove is provided with a limiting block, the outer wall of the limiting block is provided with a guide rail, and the outer wall of the guide rail extends into the limiting groove arranged on the inner wall of the sliding groove and is in sliding cooperation with the limiting groove.
[0009] As a preferred scheme of the welding gun structure of the utility model, wherein: the end of the limiting block is further provided with a cylinder, and the end of the cylinder extends into the inner wall of the driving groove arranged on the end face of the rotating disc, the limiting block is slid on the inner wall of the sliding groove under the influence of the rotation of the rotating disc and drives the clamping block arranged on the outer wall of the limiting block to move.
[0010] As a preferred scheme of the welding gun structure of the utility model, wherein: the end face of the installation plate is provided with a ball hinge seat, and the inner wall of the ball hinge seat is provided with a ball head, and the end of the ball head is provided with a ball head connecting rod.
[0011] As a preferred scheme of the welding gun structure of the utility model, wherein: the end of the ball head connecting rod is provided with an outer ring, and the outer ring is installed in the inner wall of the limiting sleeve arranged at the end of the moving plate, the end face of the moving plate is further provided with an inner ring opposite to the outer ring, and the ball is arranged between the inner ring and the outer ring in an array.
[0012] As a preferred scheme of the welding gun structure of the utility model, wherein: the buffer part includes a first screw rod, and the first screw rod is fixed to the end face of the installation plate, the outer wall of the first screw rod is further provided with a fixing sleeve, the end face of the outer ring is further provided with a second screw rod, and the second screw rod is opposite to the first screw rod in position.
[0013] As a preferred scheme of the welding gun structure of the utility model, wherein: the fixing sleeve rotates on the outer wall of the first screw rod and is connected with the second screw rod.
[0014] The utility model discloses a welding gun structure, which comprises a main body assembly and an adjusting assembly.
[0015] The ball joint structure between the mounting plate and the motion plate can absorb the bending tension of the cable bundle. The thrust ball bearing composed of the inner ring, outer ring and ball can offset the torsional force. Combined with the deformation buffer of the buffer and the first elastic element, it blocks the transmission of internal force to the welding torch body, which not only ensures the positional accuracy of the welding torch head and the quality of the weld, but also reduces the wear of the connection parts. In addition, the first screw, the fixed sleeve and the second screw of the buffer can switch between floating and rigid states, further improving the practicality and adaptability of the structure. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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.
[0017] Figure 1 This is a schematic diagram of the overall structure of a welding torch according to the present invention;
[0018] Figure 2 This is a schematic diagram of the overall structure of the adjustment component in this utility model;
[0019] Figure 3 This is a schematic diagram of the internal structure of the mounting base in this utility model;
[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;
[0021] Figure 5 This is a schematic diagram showing the positional relationship between the inner and outer rings in this utility model;
[0022] Figure 6 This is a schematic diagram of the internal structure of the mounting shell in this utility model.
[0023] Reference numerals: 100, main component; 101, welding torch body; 1011, wire feed drive; 102, torch barrel; 103, welding torch head; 104, adjusting joint; 105, mounting base;
[0024] 200, adjusting assembly; 201, mounting base; 2011, mounting plate; 2012, ball joint seat; 2013, ball head; 2014, ball head connecting rod; 202, first elastic member; 203, first screw rod; 2031, fixing sleeve; 2032, second screw rod; 204, moving plate; 2041, limiting sleeve; 205, inner ring; 2051, outer ring; 2052, ball; 206, mounting shell; 2061, sliding groove; 2062, limiting groove; 207, rotating disc; 2071, driving groove; 2072, driving ring; 2073, half gear; 2074, worm; 208, limiting block; 2081, guide rail; 2082, cylinder; 2083, clamping block. DETAILED DESCRIPTION
[0025] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.
[0026] In the following description, a lot of specific details are set forth in order to facilitate a full understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.
[0027] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. In this specification, "in one embodiment" does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.
[0028] Embodiment 1
[0029] Reference Figures 1-3 For the first embodiment of the present application, the embodiment provides a welding gun structure.
[0030] Specifically, the main assembly 100 includes a welding gun main body 101, a wire feeding driving member 1011 arranged inside the welding gun main body 101, a gun barrel 102 arranged at the other end of the welding gun main body 101, and a welding gun head 103 arranged at the end of the gun barrel 102. The outer wall of the welding gun main body 101 is provided with a mounting base 105, and the outer wall of the mounting base 105 is provided with an adjusting joint 104, and the adjusting joint 104 is used to fix the welding gun main body 101.
[0031] The adjusting assembly 200 comprises a mounting base 201 mounted at the end of the welding gun body 101, and the end face of the mounting base 201 is provided with a mounting plate 2011, the end face of the mounting plate 2011 is provided with a buffer and a first elastic element 202, and the end of the mounting plate 2011 is further provided with a moving plate 204, and the end of the moving plate 204 is provided with a moving element.
[0032] Firstly, the mounting base 105 on the outer wall of the welding gun body 101 is used to preliminarily place the entire welding gun structure at a support position required for welding operation, such as a support of an automatic equipment or an operation table for manual welding.
[0033] The adjusting joint 104 on the outer wall of the mounting base 105 is used to finely adjust the overall posture of the welding gun body 101 by changing the angle, the telescopic length or the locking state of the adjusting joint 104, so that the axial direction of the welding gun body 101 and the orientation of the welding gun head 103 meet the preset position requirements of the welding operation.
[0034] After the posture of the welding gun body 101 is adjusted in place, the structure of the adjusting joint 104 is locked, and the welding gun body 101 is stably fixed at the current position by the rigid constraint of the adjusting joint 104, so as to avoid unintended deviation of the welding gun body 101 during the welding process.
[0035] The wire feeding drive 1011 inside the welding gun body 101 is started to work, the wire feeding drive 1011 starts to work, and the external welding wire is introduced into the welding gun body 101 and transported along the internal channel of the welding gun body 101 to the gun barrel 102, the welding wire transported into the gun barrel 102 at the other end of the welding gun body 101, the gun barrel 102 plays a straight guiding role for the welding wire, ensures the stable movement of the welding wire along the preset track, and finally transports the welding wire to the welding gun head 103 at the end of the gun barrel 102, so that the end of the welding wire extends from the welding gun head 103, and prepares for the generation of the subsequent welding arc and the formation of the weld.
[0036] The cable bundle for providing power and protective gas for the welding gun, such as the cable and the protective gas pipe, is fixed on the moving element at the end of the moving plate 204 in the adjusting assembly 200, the cable bundle is fixed and constrained by the structure of the moving element, the cable bundle is stably connected with the adjusting assembly 200, and the cable bundle is prevented from loosening or shifting during the welding process.
[0037] The welding arc is generated at the welding gun head 103, and the wire feeding drive 1011 continuously and uniformly feeds the welding wire, the welding wire continuously enters the welding arc area through the welding gun head 103, melts with the workpiece to be welded to form a weld, and the welding operation is completed.
[0038] During the welding process, the cable harness generates certain tension, torsion and other internal forces due to its own stiffness, weight or slight external pulling, and the internal forces are transmitted to the moving plate 204 through the connection with the moving part, and the moving plate 204 conducts the internal forces transmitted by the cable harness to the first elastic member 202 on the end surface of the mounting plate 2011, and the buffer member absorbs part of the internal force impact through its own structural deformation, avoiding the transmission of the internal force to the welding gun body 101 through the mounting plate 2011 and the mounting base 201;
[0039] Since the buffer member and the first elastic member 202 block the transmission of the internal force of the cable harness to the welding gun body 101, the welding gun body 101 always maintains the preset posture of the adjustment joint 104 fixed, the position of the welding gun head 103 and the welding wire conveying path are stable, and the position of the welding arc and the forming quality of the weld are ensured not to be disturbed by the internal force of the cable harness.
[0040] Embodiment 2
[0041] Referring to Figures 2-6 As a second embodiment of the utility model, this embodiment is based on the previous embodiment.
[0042] Specifically, the moving part includes a mounting shell 206 arranged at the end of the moving plate 204, the inner wall of the mounting shell 206 is provided with a rotating disc 207, and the end of the rotating disc 207 is further provided with a driving ring 2072, the outer wall of the driving ring 2072 is provided with a half gear 2073, and the half gear 2073 is engaged with a worm 2074 arranged on the inner wall of the mounting shell 206 and is driven to rotate on the inner wall of the mounting shell 206 by the worm 2074.
[0043] Among them, the mounting shell 206 is fixedly installed above the moving plate 204, and an accommodating space is formed in the inside, the rotating disc 207 is movably installed in the inside of the mounting shell 206, and the rotating disc 207 and the driving ring 2072 at the bottom are an integral whole, the driving ring 2072 is tightly attached to the upper surface of the moving plate 204, and the through hole formed in the middle is used for passing through the cable harness.
[0044] The worm 2074 in the inside of the mounting shell 206 rotates in the inside of the mounting shell 206 under the operation of the worker, and drives the rotating disc 207 to rotate synchronously in the inside of the mounting shell 206 through the engagement with the half gear 2073, and since the engagement of the half gear 2073 and the worm 2074 has self-locking property, it will not rotate under the influence of external factors, and the state of the rotating disc 207 is maintained.
[0045] Preferably, the end surface of the mounting shell 206 is arrayed with a sliding groove 2061, and a limiting block 208 is arranged in the inside of the sliding groove 2061, the outer wall of the limiting block 208 is provided with a guide rail 2081, and the outer wall of the guide rail 2081 extends into the limiting groove 2062 formed in the inner wall of the sliding groove 2061 and is in sliding cooperation with the limiting groove 2062;
[0046] The end of the limiting block 208 is also provided with a cylinder 2082, and the end of the cylinder 2082 extends to the inner wall of the driving slot 2071 opened on the end face of the rotating disc 207. The limiting block 208 is affected by the rotation of the rotating disc 207 to slide in the inner wall of the sliding slot 2061 and drive the clamping block 2083 arranged on the outer wall of the limiting block 208 to move.
[0047] The limiting block 208 slides in the sliding slot 2061 on the surface of the mounting shell 206, and the guide rail 2081 on the surface cooperates with the limiting slot 2062 on the side wall of the sliding slot 2061 to limit the limiting block 208 in the sliding slot 2061, so that the limiting block 208 can only move linearly along the sliding slot 2061.
[0048] The cylinder 2082 at the bottom of the limiting block 208 extends into the driving slot 2071 on the surface of the rotating disc 207. Since the mounting shell 206 does not move, when the rotating disc 207 inside is driven to rotate by the worm 2074, the cylinder 2082 is pushed to move by the driving slot 2071 on the surface of the rotating disc 207, and the limiting block 208 is moved in the sliding slot 2061. By synchronously moving the limiting block 208 to the shaft center, the clamping block 2083 at the end can be moved close to each other, the cable bundle in the middle through hole is clamped and fixed, and the cable bundle is relatively fixed to the mounting shell 206.
[0049] The end face of the mounting plate 2011 is provided with a ball hinge seat 2012, and the inner wall of the ball hinge seat 2012 is provided with a ball head 2013. The end of the ball head 2013 is provided with a ball head connecting rod 2014.
[0050] The end of the ball head connecting rod 2014 is provided with an outer ring 2051, and the outer ring 2051 is installed in the inner wall of the limiting sleeve 2041 arranged on the end of the moving plate 204. The end face of the moving plate 204 is also provided with an inner ring 205, which is opposite to the outer ring 2051. The inner ring 205 and the outer ring 2051 are arranged with a plurality of balls 2052 therebetween.
[0051] The ball hinge seat 2012 is installed on the side of the surface of the mounting plate 2011, which does not affect the connection between the middle cable bundle and the inside of the welding gun body 101.
[0052] At the same time, the ball head 2013 in the ball hinge seat 2012 and the ball head connecting rod 2014 are an integral whole. The ball head 2013 can move in any direction in the ball hinge seat 2012. The other end of the ball head connecting rod 2014 is fixedly connected with the outer ring 2051, and cooperates with the buffer and the first elastic member 202 to support the outer ring 2051, the moving plate 204 above and the mounting shell 206.
[0053] The inner ring 205 is fixed below the moving plate 204, and the outer ring 2051 and the inner ring 205 are fixed and installed through the limiting sleeve 2041 on the lower surface of the moving plate 204, and the outer ring 2051 and the inner ring 205 are separated through the ball 2052 clamped therebetween, and the rotation between the two does not affect each other.
[0054] Preferably, the buffer member comprises the first screw rod 203, and the first screw rod 203 is fixed to the end surface of the mounting plate 2011. The outer wall of the first screw rod 203 is further provided with a fixing sleeve 2031, and the end surface of the outer ring 2051 is further provided with a second screw rod 2032, and the second screw rod 2032 is opposite to the first screw rod 203 in position. The fixing sleeve 2031 rotates on the outer wall of the first screw rod 203 and is connected with the second screw rod 2032.
[0055] The first screw rod 203 is installed on the upper surface of the mounting plate 2011 and opposite to the second screw rod 2032 on the lower surface of the outer ring 2051 in position. The fixing sleeve 2031 on the outer surface of the first screw rod 203 is affected by the threads on the surface of the first screw rod 203 and can move upward when rotating and is screwed with the second screw rod 2032. The first screw rod 203 and the second screw rod 2032 can be connected through the fixing sleeve 2031 to form a whole.
[0056] The fixing sleeve 2031 is rotated in reverse, so that when the fixing sleeve 2031 rotates counterclockwise on the first screw rod 203, the fixing sleeve 2031 moves along the first screw rod 203 away from the second screw rod 2032 until it is completely separated from the second screw rod 2032. At this time, the first elastic member 202 returns to the natural extension state, and the moving plate 204 is supported by the elastic support to maintain a predetermined distance with the mounting plate 2011. At this time, the outer ring 2051 connected by the ball head 2013 and the ball head connecting rod 2014 in the ball hinge seat 2012 can move freely and normally absorb internal force.
[0057] The fixing sleeve 2031 is rotated in the forward direction, so that when the fixing sleeve 2031 rotates clockwise on the first screw rod 203, the fixing sleeve 2031 is screwed with the second screw rod 2032. Continue to tighten the fixing sleeve 2031 to narrow the distance between the first screw rod 203 and the second screw rod 2032, and drive the mounting plate 2011 and the outer ring 2051 to move closer to each other. The outer ring 2051 pushes the ball head 2013 to extrude the ball hinge seat 2012 through the ball head connecting rod 2014, the moving plate 204 extrudes the first elastic member 202 to make it shrink, and finally the ball head 2013 cannot be deflected and is locked. The adjustment assembly 200 becomes a rigid structure to avoid shaking of the mechanism during manual welding.
[0058] In summary, when the cable bundle needs to be fixed during use, the worm 2074 is manually driven to rotate around its own axis, the worm 2074 drives the half gear 2073 to rotate through the tooth engagement, and then drives the driving ring 2072 and the turntable 207 fixed therewith to rotate synchronously. When the turntable rotates, the inner wall of the driving groove 2071 generates a radial thrust on the cylinder 2082, forcing the cylinder 2082 to drive the limiting block 208 to slide along the sliding groove 2061 towards the center of the mounting shell 206, and the three groups of limiting blocks 208 inside the mounting shell 206 are synchronously gathered, and the clamping blocks 2083 clamp the cable bundle together. When a thicker cable bundle needs to be adapted, the worm 2074 is rotated in the opposite direction, the turntable 207 is rotated in the opposite direction, and the driving groove 2071 on the surface pulls the cylinder 2082 to drive the limiting block 208 to slide towards the edge of the sliding groove 2061, and the clamping blocks 2083 are opened, so that the cable can be replaced, and self-adaptive clamping of cable bundles of different diameters is realized.
[0059] The ball joint seat 2012 is fixed outside the mounting plate 2011, the inner wall of the ball joint seat 2012 is a semispherical groove, the ball joint seat 2012 is embedded in the ball head 2013 which can be deflected by 360°, the ball head 2013 is fixedly welded with one end of the ball head connecting rod 2014, forming a "ball joint structure", which is used to absorb bending tension. The other end of the ball head connecting rod 2014 is in interference fit with the inner wall of the outer ring 2051, the outer ring 2051 is a ring-shaped metal piece, the outer wall of which is embedded in the limiting sleeve 2041 provided at the end of the moving plate 204, and the limiting sleeve 2041 plays a role in radial positioning of the outer ring 2051.
[0060] The moving plate 204 is close to the end face of the mounting plate 2011, and the inner ring 205 is welded at a position coaxial with the outer ring 2051, and the annular gap between the inner ring 205 and the outer ring 2051 is uniformly provided with the ball 2052, forming a "thrust ball bearing structure" for absorbing torsional force.
[0061] When the cable bundle generates bending tension due to sagging or external pulling, the tension is transmitted to the moving plate 204 through the moving part, at this time the moving plate 204 drives the outer ring 2051 and the ball head connecting rod 2014 to deflect in the bending direction through the limiting sleeve 2041, the ball head 2013 at the end of the ball head connecting rod 2014 deflects in the corresponding direction in the groove of the ball joint seat 2012, such as downward deflection, the ball head deflects downward, converts the bending tension into deflection movement of the ball head 2013, avoids the transmission of the tension to the welding gun body 101 through the mounting plate 2011 and the mounting base 201, and ensures the position accuracy of the welding gun head 103;
[0062] When the cable bundle generates a torsional force due to a wire feeding reaction force or self torsion, the torsional force is transmitted to the moving plate 204 through the moving part, the moving plate 204 drives the inner ring 205 to rotate around the axis, the inner ring drives the rolling of the ball bearing between the inner ring 205 and the outer ring 2051 through the ball bearing 2052, the outer ring 2051 remains stationary because it is fixed with the ball head connecting rod 2014, the torsional force is absorbed through the rolling friction of the ball bearing 2052 and cannot be transmitted to the ball head connecting rod 2014 and the welding gun body 101, thereby avoiding the wear of the connecting part.
[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.
Claims
1. A welding gun structure, characterized by: The utility model relates to a welding torch, which comprises a main body assembly (100) and an adjusting assembly (200). The main body assembly (100) comprises a welding torch main body (101), a wire feeding drive (1011) arranged inside the welding torch main body (101), a torch barrel (102) arranged at the other end of the welding torch main body (101), and a welding torch head (103) arranged at the end of the torch barrel (102). The welding torch main body (101) is provided with a mounting base (105) on the outer wall, and the mounting base (105) is provided with an adjusting joint (104) on the outer wall.
2. The welding gun structure of claim 1, wherein: The adjusting assembly (200) comprises a mounting base (201) arranged at the end of the welding torch main body (101).
3. The welding gun structure of claim 2, wherein: The mounting base (201) is provided with a mounting plate (2011) on the end face.
4. The welding gun structure of claim 3, wherein: The mounting plate (2011) is provided with a buffer and a first elastic element (202) on the end face.
5. The welding gun structure of claim 4, wherein: The mounting plate (2011) is further provided with a moving plate (204) at the end, and the moving plate (204) is provided with a moving element at the end.
6. The welding gun structure of claim 5, wherein: The moving element comprises a mounting shell (206) arranged at the end of the moving plate (204). The mounting shell (206) is provided with a rotating disc (207) on the inner wall. The rotating disc (207) is further provided with a driving ring (2072) at the end. The driving ring (2072) is provided with a half gear (2073) on the outer wall. The half gear (2073) is engaged with a worm (2074) arranged on the inner wall of the mounting shell (206) and is driven to rotate on the inner wall of the mounting shell (206) by the worm (2074). The mounting shell (206) is provided with a sliding groove (2061) on the end face. The sliding groove (2061) is provided with a limiting block (208) inside. The limiting block (208) is provided with a guide rail (2081) on the outer wall. The guide rail (2081) extends to the inner wall of the limiting groove (2062) provided on the inner wall of the sliding groove (2061) and is in sliding cooperation with the limiting groove (2062). The limiting block (208) is further provided with a cylinder (2082) at the end. The cylinder (2082) extends to the inner wall of the driving groove (2071) provided on the end face of the rotating disc (207). The limiting block (208) is affected by the rotation of the rotating disc (207) and slides on the inner wall of the sliding groove (2061), and drives the clamping block (2083) arranged on the outer wall of the limiting block (208) to move. The mounting plate (2011) is provided with a spherical hinge seat (2012) on the end face. The spherical hinge seat (2012) is provided with a ball head (2013) on the inner wall. The ball head (2013) is provided with a ball head connecting rod (2014) at the end. The ball head connecting rod (2014) is provided with an outer ring (2051) at the end. The outer ring (2051) is arranged in the limiting sleeve (2041) on the inner wall of the moving plate (204). The moving plate (204) is further provided with an inner ring (205) on the end face and opposite to the outer ring (2051). The inner ring (205) and the outer ring (2051) are provided with an array of balls (2052) therebetween.
7. The welding gun structure of claim 6, wherein: The buffer comprises a first screw rod (203), the first screw rod (203) is fixed to the end face of the mounting plate (2011), the outer wall of the first screw rod (203) is further provided with a fixing sleeve (2031), the end face of the outer ring (2051) is further provided with a second screw rod (2032), and the second screw rod (2032) is opposite to the first screw rod (203) in position.
8. The welding gun structure of claim 7, wherein: The fixing sleeve (2031) rotates on the outer wall of the first screw rod (203) and is connected with the second screw rod (2032).