Welding clamping device

Abstract

The utility model relates to the technical field of welding, and discloses a welding clamping device which comprises a supporting frame, a first supporting wheel, an air cylinder, a lifting plate, a moving plate, a mounted bearing, a spline sleeve, a spline shaft, a driving wheel and a pressing piece. During use, after two sections of steel pipes are placed on the first supporting wheels on the two sides, the air cylinder is controlled to work, and then the lifting plate can be driven to move. And then the movable plates on the two sides are driven to do lifting motion, finally, the pressing pieces on the two sides abut against the two sections of steel pipes correspondingly, the two sections of steel pipes are pressed and positioned correspondingly, and then welding work can be conducted. Moreover, the movable plates on the two sides can slide relative to the lifting plate, so that the distance between the movable plates on the two sides can be adjusted, and finally the distance between the pressing pieces on the two sides and the distance between the driving wheels on the two sides are changed. Therefore, the middle parts of the two sections of steel pipes with different lengths can be pressed all the time, and overturning force is applied to the middle parts of the two sections of steel pipes with different lengths. And therefore, the end parts of the two sections of steel pipes are prevented from tilting, and the butting effect of the two sections of steel pipes is improved.

Description

Technical Field

[0001] This application relates to the field of welding technology, for example to a welding clamping device. Background Technology

[0002] A welding fixture is disclosed in related technology (Announcement No.: CN220659800U), including a mounting base. Two rows of support rollers are movably mounted on the top of the mounting base to support two sections of steel pipe to be welded. A support arm is fixedly mounted on the top of the mounting base, and an adjusting screw is connected to the support arm. A transmission frame is movably connected to the bottom end of the adjusting screw. Two sets of positioning pressure rollers are movably mounted inside the transmission frame. A transmission synchronous pulley is fixedly connected to the end of one set of positioning pressure rollers. A mounting frame is fixedly mounted on the top of the transmission frame, and a transmission shaft is movably mounted inside the mounting frame. A drive synchronous pulley is fixedly fitted outside the transmission shaft, and a synchronous transmission toothed belt is fitted between the drive synchronous pulley and the transmission synchronous pulley. The transmission synchronous pulley rotates under the drive of a driving mechanism.

[0003] In implementing the above embodiments, at least the following problems were found in the related technology:

[0004] This welding fixture, during use, allows the height of the two positioning rollers to be adjusted by rotating the adjusting screw, thereby pressing the two steel pipes placed on multiple cam bearing rollers to clamp and fix the two sections of steel pipe to be welded. Then, driven by the drive mechanism and the transmission synchronous pulley, active synchronous pulley, and synchronous transmission toothed belt, the two sets of positioning rollers rotate the two steel pipe sections, facilitating welding along the entire circumference of the two sections. However, because the distance between the two positioning rollers cannot be adjusted, when the two steel pipe sections are too long or too short, the middle part of the two sections cannot be clamped. This causes the ends of the two steel pipes furthest from the positioning rollers to easily lift, thus affecting the joining effect of the two steel pipe sections.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a welding clamping device to solve the problems mentioned in the background art.

[0008] In some embodiments, the welding clamping device includes: a support frame, the support frame including a top plate and a bottom plate, the top plate being located above the bottom plate along the height direction of the support frame; first support wheels, evenly installed on the top surface of the bottom plate along the length direction of the support frame, and located on both sides of the top surface of the bottom plate along the width direction of the support frame, for supporting two sections of steel pipe to be welded; a cylinder, installed on the top plate along the height direction of the support frame, the moving end of the cylinder facing the bottom plate; a lifting plate, installed on the moving end of the cylinder; and a movable plate, slidably installed. Located on both sides of the bottom surface of the lifting plate along the length of the support frame; bearings with seats are respectively installed on the bottom surface of the two movable plates; spline sleeves are respectively installed inside the bearings with seats on both sides; spline shafts are respectively passed through the spline sleeves on both sides, and the spline shafts on both sides are coaxially distributed; drive wheels are respectively installed on the outer wall of the spline shafts on both sides, and are respectively used to abut against the two steel pipes; clamping parts are respectively installed on the two movable plates on both sides, and are respectively used to clamp the two steel pipes; wherein, the spline shafts on both sides are controlled to rotate synchronously, so that the drive wheels on both sides rotate synchronously.

[0009] Optionally, the support frame further includes a support rod, which is installed between the opposite surfaces of the top plate and the bottom plate along the height direction of the support frame.

[0010] Optionally, the clamping component includes: a spring, which is installed on the bottom surface of the two movable plates along the height direction of the support frame; a mounting plate, which is installed on the bottom end of the two springs; and a second support wheel, which is installed on the bottom surface of the two mounting plates along the width direction of the support frame and located on both sides of the bottom surface of the two mounting plates, respectively, for abutting against the two steel pipes.

[0011] Optionally, the clamping component further includes: a first optical axis, which is slidably inserted through the movable plates on both sides along the height direction of the support frame, and the bottom ends of the first optical axes on both sides are connected to the mounting plates on both sides respectively; a fixing ring, which is installed on the top ends of the first optical axes on both sides respectively; wherein the springs on both sides are respectively fitted onto the first optical axes on both sides.

[0012] Optionally, the clamping component further includes: a first linear bearing, which is respectively fitted onto the first optical shaft on both sides and respectively mounted on the movable plates on both sides.

[0013] Optionally, it further includes: a dual-shaft motor, mounted on the bottom surface of the lifting plate and located between the two splined shafts on both sides; and a coupling, respectively mounted between the two rotating ends of the dual-shaft motor and the two splined shafts on both sides.

[0014] Optionally, it further includes: guide rails, which are installed on the bottom surface of the lifting plate along the length direction of the support frame and located on both sides of the bottom surface of the lifting plate; sliders, which are respectively installed on the guide rails on both sides and respectively connected to the movable plates on both sides; and guide rail clamps, which are respectively installed on the movable plates on both sides and are respectively used to clamp or release the guide rails on both sides.

[0015] Optionally, it further includes: a second optical axis, which is slidably inserted through the top plate along the height direction of the support frame and connected to the lifting plate.

[0016] Optionally, it also includes: a second linear bearing, fitted onto the second optical axis and mounted on the top plate.

[0017] The welding clamping device provided in this disclosure can achieve the following technical effects:

[0018] This disclosure provides a welding clamping device, including a support frame, first support wheels, a cylinder, a lifting plate, a movable plate, a bearing with a seat, a spline sleeve, a spline shaft, a drive wheel, and a clamping component. The support frame supports the entire device. The support frame includes a top plate and a bottom plate; the top plate is located above the bottom plate along the height direction of the support frame, and the top and bottom plates respectively support relevant components of the mounting device. The first support wheels are evenly installed on the top surface of the bottom plate along the length direction of the support frame and on both sides of the top surface of the bottom plate along the width direction of the support frame, supporting two sections of steel pipe to be welded. The cylinder is installed on the top plate along the height direction of the support frame, with its moving end facing the bottom plate, providing driving force. The lifting plate is installed on the moving end of the cylinder and moves closer to or away from the bottom plate under the action of the cylinder. The movable plate is slidably installed on the bottom surface of the lifting plate, located on both sides of the bottom surface of the lifting plate along the length direction of the support frame; both movable plates can slide relative to the lifting plate along the length direction of the support frame. Mounted bearings are installed on the bottom surfaces of the two side movable plates, supporting rotatable splined bushings. Splined bushings are installed inside the mounted bearings on both sides, supporting slidable splined shafts. Splined shafts pass through the splined bushings on both sides, coaxially distributed. The splined shafts on both sides can drive the splined bushings to rotate, and the splined bushings can slide relative to the splined shafts. Drive wheels are installed on the outer walls of the splined shafts on both sides, abutting against the two steel pipe sections to move them. Clamping components are installed on the two side movable plates, clamping and positioning the two steel pipe sections. The splined shafts on both sides can rotate synchronously, causing the drive wheels to rotate synchronously as well.

[0019] In use, after placing two steel pipe sections on the multiple first support wheels on both sides, the cylinder is activated, driving the lifting plate to move. This, in turn, causes the two side moving plates to rise and fall, ultimately bringing the two side clamping parts against the two steel pipe sections, clamping and positioning them for welding. At this time, the two side drive wheels also abut against the two steel pipe sections. Then, the dual-axis motor is activated, driving the two side splined shafts to rotate via the two side couplings. This, in turn, drives the two side hollow shafts to rotate, ultimately causing the two side drive wheels to drive the two steel pipe sections to rotate synchronously, facilitating welding along the entire axial direction of the two steel pipe sections. Furthermore, since the two side moving plates can slide relative to the lifting plate, the distance between the two side moving plates can be adjusted, ultimately changing the distance between the two side clamping parts and the two side drive wheels. This ensures that the middle section of the two steel pipe sections of different lengths is always pressed down, and a flipping force is applied to the middle section of the two steel pipe sections of different lengths. This prevents the ends of the two steel pipe sections from warping and improves the joining effect of the two steel pipe sections.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are considered similar elements. The drawings do not constitute a limitation of scale, and wherein:

[0022] Figure 1 This is a cross-sectional view of a welding clamping device provided in an embodiment of this disclosure;

[0023] Figure 2 yes Figure 1 Enlarged structural diagram at point A;

[0024] Figure 3 This is a front view structural schematic diagram of a welding clamping device provided in an embodiment of this disclosure;

[0025] Figure 4 yes Figure 1 A magnified structural diagram of the BB section.

[0026] Figure label:

[0027] 10: Support frame; 11: Top plate; 12: Bottom plate; 13: Support rod; 20: First support wheel; 30: Cylinder; 40: Lifting plate; 50: Moving plate; 60: Bearing with seat; 70: Spline sleeve; 80: Spline shaft; 90: Drive wheel; 100: Clamping component; 101: Spring; 102: Mounting plate; 103: Second support wheel; 104: First optical axis; 105: Fixing ring; 110: Dual-axis motor; 120: Guide rail; 130: Slider; 140: Guide rail clamp; 150: Second optical axis. Detailed Implementation

[0028] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0029] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0030] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0031] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0032] Unless otherwise stated, the term "multiple" means two or more.

[0033] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0034] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0036] Combination Figures 1 to 4As shown, this embodiment of the present disclosure provides a welding clamping device, including a support frame 10, a first support wheel 20, a cylinder 30, a lifting plate 40, a moving plate 50, a bearing with a seat 60, a spline sleeve 70, a spline shaft 80, a drive wheel 90, and a clamping member 100. The support frame 10 is used to support the entire device. The support frame 10 includes a top plate 11 and a bottom plate 12. Along the height direction of the support frame 10, the top plate 11 is located above the bottom plate 12. The bottom plate 12 and the top plate 11 are respectively used to support the relevant components of the mounting device. The first support wheel 20 is evenly installed on the top surface of the bottom plate 12 along the length direction of the support frame 10 and is located on both sides of the top surface of the bottom plate 12 along the width direction of the support frame 10, and is used to support two sections of steel pipe to be welded. The cylinder 30 is installed on the top plate 11 along the height direction of the support frame 10, and the moving end of the cylinder 30 faces the bottom plate 12, and is used to provide driving force. The lifting plate 40 is installed at the moving end of the cylinder 30, and moves closer to or further away from the base plate 12 under the drive of the cylinder 30. The movable plate 50 is slidably installed on the bottom surface of the lifting plate 40, located on both sides of the bottom surface of the lifting plate 40 along the length of the support frame 10. Both movable plates 50 can slide relative to the lifting plate 40 along the length of the support frame 10. Bearings 60 with seats are respectively installed on the bottom surfaces of the two movable plates 50, and are used to support and install rotatable splined shafts 80 sleeves. Splined sleeves 70 are respectively installed inside the bearings 60 on both sides, and are used to support and install slidable splined shafts 80. The splined shafts 80 pass through the splined sleeves 70 on both sides, and the two splined shafts 80 are coaxially distributed. The two splined shafts 80 can respectively drive the two splined sleeves 70 to rotate, and the two splined sleeves 70 can slide relative to the two splined shafts 80. Drive wheels 90 are respectively mounted on the outer walls of the two splined shafts 80, and are used to abut against the two steel pipe sections to move the two steel pipe sections respectively. Clamping components 100 are respectively mounted on the two movable plates 50, and are used to clamp the two steel pipe sections respectively, and to clamp and position the two steel pipe sections. Among them, the two splined shafts 80 are controlled to rotate synchronously, so that the two drive wheels 90 rotate synchronously.

[0037] This embodiment of the invention provides a welding clamping device. After placing two steel pipe sections on multiple first support wheels 20 on both sides, the control cylinder 30 operates, driving the lifting plate 40 to move. This, in turn, drives the two side moving plates 50 to move up and down, ultimately causing the two side clamping members 100 to abut against the two steel pipe sections, clamping and positioning them for welding. At this time, the two side drive wheels 90 also abut against the two steel pipe sections respectively. Then, the control of the dual-axis motor 110, through the two side couplings, drives the two side splined shafts 80 to rotate. This, in turn, drives the two side hollow shafts to rotate, ultimately causing the two side drive wheels 90 to drive the two steel pipe sections to rotate synchronously, facilitating welding along the entire axial direction of the two steel pipe sections. Furthermore, since the two side moving plates 50 can slide relative to the lifting plate 40, the distance between the two side moving plates 50 can be adjusted, ultimately changing the distance between the two side clamping members 100 and the two side drive wheels 90. This allows for consistent pressure on the middle section of two steel pipes of different lengths, applying a flipping force to the middle section. This prevents the ends of the two pipes from warping and improves the connection between them.

[0038] Optionally, combined Figure 1 and Figure 3 As shown, the support frame 10 also includes a support rod 13. The support rod 13 is installed between the opposite surfaces of the top plate 11 and the bottom plate 12 along the height direction of the support frame 10.

[0039] In this embodiment of the disclosure, the support rod 13 is used to determine the relative position of the bottom plate 12 and the top plate 11, thereby determining the main structure of the entire support frame 10.

[0040] Optionally, combined Figures 1 to 4 As shown, the clamping component 100 includes a spring 101, a mounting plate 102, and a second support wheel 103. The spring 101 is mounted on the bottom surface of the two movable plates 50 along the height direction of the support frame 10, providing elastic force. The mounting plates 102 are mounted on the bottom ends of the springs 101 on both sides, supporting the mounting of the second support wheels 103. The second support wheels 103 are mounted on the bottom surfaces of the mounting plates 102 on both sides, along the width direction of the support frame 10, and are positioned on either side of the bottom surface of the mounting plates 102, respectively, to abut against the two sections of steel pipe.

[0041] In this embodiment, during use, after placing two steel pipe sections on the multiple first support wheels 20 on both sides, the control cylinder 30 is activated, which drives the lifting plate 40 to move, thereby causing the two side moving plates 50 to move up and down. Then, driven by the springs 101 on both sides, the mounting plates 102 on both sides can move up and down, ultimately causing the second support wheels 103 on both sides to abut against the two steel pipe sections. At this time, under the continuous push of the cylinder 30, the springs 101 on both sides can be continuously compressed until the two drive wheels 90 on both sides abut against the surfaces of the two steel pipe sections, and the cylinder 30 stops moving. At this time, the elastic force generated by the deformation of the springs 101 on both sides can press and position the two steel pipe sections respectively, and then welding can be carried out.

[0042] Optionally, combined Figures 1 to 4 As shown, the clamping component 100 also includes a first optical axis 104 and a retaining ring 105. The first optical axis 104 is slidably mounted on both sides of the movable plates 50 along the height direction of the support frame 10. The bottom ends of the first optical axes 104 on both sides are connected to the mounting plates 102 on both sides, serving as guides and supports. The retaining rings 105 are respectively installed on the top ends of the first optical axes 104 on both sides, serving as limiters to prevent the first optical axes 104 from falling off the movable plates 50 on both sides. Springs 101 on both sides are respectively fitted onto the first optical axes 104 on both sides.

[0043] In this embodiment, the first optical shafts 104 on both sides serve as guide supports, allowing the springs 101 on both sides to be compressed, thereby improving the stability of the mounting plates 102 relative to the moving plates 50 on both sides during vertical movement. Furthermore, the design of the springs 101 being respectively fitted onto the first optical shafts 104 on both sides prevents the springs 101 from detaching from the moving plates 50 and the mounting plates 102 on both sides.

[0044] Optionally, combined Figures 1 to 4 As shown, the clamping component 100 also includes a first linear bearing. The first linear bearing is respectively fitted onto the first optical shafts 104 on both sides and is respectively mounted on the movable plates 50 on both sides.

[0045] In this embodiment, the first linear bearings on both sides are used to reduce the friction between the first optical shafts 104 on both sides and the moving plates 50 on both sides, thereby improving the accuracy of the first optical shafts 104 on both sides sliding relative to the moving plates 50 on both sides.

[0046] Optionally, combined Figure 1 and Figure 3 As shown, it also includes a dual-shaft motor 110 and a coupling. The dual-shaft motor 110 is mounted on the bottom surface of the lifting plate 40 and located between the two splined shafts 80 on both sides, and is used to provide driving force. The coupling is respectively installed between the two rotating ends of the dual-shaft motor 110 and the two splined shafts 80 on both sides, and is used to transmit driving force.

[0047] In this embodiment, the dual-axis motor 110 is controlled to operate, and through the couplings on both sides, the splined shafts 80 on both sides can be driven to rotate, ultimately achieving the synchronous rotation of the drive wheels 90 on both sides.

[0048] Optionally, combined Figures 1 to 4 As shown, the system also includes guide rails 120, sliders 130, and guide rail clamps 140. Guide rails 120 are installed along the length of the support frame 10 on the bottom surface of the lifting plate 40, and are located on both sides of the bottom surface of the lifting plate 40. Slider blocks 130 are respectively installed on the two side guide rails 120 and are respectively connected to the two side movable plates 50. Guide rail clamps 140 are respectively installed on the two side movable plates 50 and are used to clamp or release the two side guide rails 120.

[0049] In this embodiment, the two side guide rails 120 and the two side sliders 130 together serve as guides and supports, allowing the two side movable plates 50 to slide relative to the lifting plate 40. The guide rail clamps 140 are used to clamp or release the two side guide rails 120 respectively. When the two side guide rail clamps 140 release the two side guide rails 120 respectively, the position of the movable plate 50 can be adjusted. When the two side guide rail clamps 140 clamp the two side guide rails 120 respectively, the position of the two side movable plates 50 can be fixed, completing the position adjustment of the two side movable plates 50.

[0050] Optionally, combined Figure 1 , Figure 3 and Figure 4 As shown, it also includes a second optical axis 150. The second optical axis 150 is slidably inserted through the top plate 11 along the height direction of the support frame 10 and is connected to the lifting plate 40.

[0051] In this embodiment, the second optical axis 150 serves as a guide and support to improve the stability of the lifting plate 40 during movement and reduce the radial force on the moving end of the cylinder 30.

[0052] Optionally, combined Figure 1 , Figure 3 and Figure 4 As shown, it also includes a second linear bearing. The second linear bearing is fitted onto the second optical axis 150 and mounted on the top plate 11.

[0053] In this embodiment of the disclosure, the second linear bearing is used to reduce the friction between the second optical axis 150 and the top plate 11, and to improve the accuracy of the second optical axis 150 when sliding relative to the top plate 11.

[0054] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A welding clamp device, characterized by, The utility model provides a steel pipe welding device, which comprises a support frame, a first support wheel, a cylinder, a lifting plate, a moving plate, a bearing with seat, a spline sleeve, a spline shaft, a driving wheel, a pressing part and a double-shaft motor. The support frame comprises a top plate and a bottom plate, and the top plate is located above the bottom plate along the height direction of the support frame. The first support wheel is uniformly installed on the top surface of the bottom plate along the length direction of the support frame and is located on both sides of the top surface of the bottom plate along the width direction of the support frame and is used for supporting two steel pipes to be welded. The cylinder is installed on the top plate along the height direction of the support frame, and the moving end of the cylinder faces the bottom plate. The lifting plate is installed on the moving end of the cylinder. The moving plate is slidably installed on the bottom surface of the lifting plate and is located on both sides of the bottom surface of the lifting plate along the length direction of the support frame. The bearing with seat is respectively installed on the bottom surface of the moving plate on both sides. The spline sleeve is respectively installed in the bearing with seat on both sides. The spline shaft is respectively arranged in the spline sleeve on both sides, and the spline shafts on both sides are coaxially distributed. The driving wheel is respectively installed on the outer wall of the spline shaft on both sides and is respectively used for abutting against the two steel pipes. The pressing part is respectively installed on the moving plate on both sides and is respectively used for pressing the two steel pipes. The spline shafts on both sides are controlled to synchronously rotate so that the driving wheels on both sides synchronously rotate.

2. A welding clamp as defined in claim 1, wherein The support frame further comprises a support rod which is installed between the opposite surfaces of the top plate and the bottom plate along the height direction of the support frame. The pressing part comprises a spring which is respectively installed on the bottom surface of the moving plate on both sides along the height direction of the support frame.

3. A welding fixture as defined in claim 1, wherein An installation plate is respectively installed on the bottom end of the spring on both sides. A second support wheel is respectively installed on the bottom surface of the installation plate on both sides and is respectively located on both sides of the bottom surface of the installation plate along the width direction of the support frame and is respectively used for abutting against the two steel pipes. The pressing part further comprises a first optical shaft which is slidably arranged in the moving plate on both sides along the height direction of the support frame, and the bottom end of the first optical shaft on both sides is connected with the installation plate on both sides. A fixing ring is respectively installed on the top end of the first optical shaft on both sides.

4. A welding clamp as defined in claim 3, wherein The spring on both sides is respectively sleeved on the first optical shaft on both sides. The pressing part further comprises a first linear bearing which is respectively sleeved on the first optical shaft on both sides and is respectively installed on the moving plate on both sides. Further comprising a double-shaft motor which is installed on the bottom surface of the lifting plate and is located between the spline shafts on both sides. A shaft coupling is respectively installed between the two rotating ends of the double-shaft motor and the spline shafts on both sides.

5. A welding clamp as defined in claim 4, wherein, Further comprising a guide rail which is installed on the bottom surface of the lifting plate along the length direction of the support frame and is located on both sides of the bottom surface of the lifting plate. A sliding block is respectively installed on the guide rail on both sides and is respectively connected with the moving plate on both sides.

6. A welding clamp device according to any one of claims 1 to 5, wherein A guide rail clamp is respectively installed on the moving plate on both sides and is respectively used for clamping or releasing the guide rail on both sides. Further comprising a second optical shaft which is slidably arranged in the top plate along the height direction of the support frame and is connected with the lifting plate. Further comprising a second linear bearing which is sleeved on the second optical shaft and is installed on the top plate.

7. A welding clamp device according to any one of claims 1 to 5, wherein ​ ​ ​ ​ 8. A welding clamp device according to any one of claims 1 to 5, wherein ​ ​ 9. A welding clamp device according to claim 8, wherein, ​ ​

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