Plasma electric welding device

Abstract

The invention discloses a plasma electric welding device which comprises a base, a welding assembly, a transmission mechanism, a driven part and a clamping mechanism. The welding assembly and the driven part are movably arranged on the base, the transmission assembly is rotatably arranged on the base, and sliding of the welding assembly can unidirectionally drive the driven part to slide through the transmission mechanism; the clamping mechanism is arranged on the base in a sliding mode and connected with the driven piece, and the clamping mechanism moves in the discharging direction to relieve the clamping state and push the welding piece away from the base. The plasma electric welding device can automatically complete blanking and clamping of a welding part when spot welding is reset.

Description

Technical Field

[0001] This invention belongs to the field of welding technology, and more specifically, relates to a plasma welding apparatus. Background Technology

[0002] Currently, in the field of plasma welding technology, mechanical clamps are typically used to hold the weldment in place to ensure welding accuracy and stability. Existing plasma welding equipment requires operators to manually operate the clamp's control components to release the weldment after welding, and then remove it from the worktable for unloading. This manual operation method presents several problems. On the one hand, the operation process is cumbersome, increasing the operator's workload and reducing production efficiency; on the other hand, frequent manual operation can easily lead to operator fatigue, poses certain safety hazards, and makes it difficult to integrate with automated production processes. Therefore, designing a plasma welding device that can automatically release the weldment and unload it after welding, improving operational convenience and production efficiency, has become an urgent technical problem to be solved. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this invention is to provide a plasma welding device to solve the technical problem mentioned in the background art that the existing plasma welding devices cannot automatically release the clamp and unload the material after welding.

[0004] To achieve the aforementioned objectives, the technical solution adopted by this invention includes: A plasma welding apparatus includes a base, a welding assembly, a transmission mechanism, a follower, and a clamping mechanism; The welding assembly and the driven member are movably mounted on the base, and the transmission assembly is rotatably mounted on the base. The sliding of the welding assembly can drive the driven member to slide in one direction through the transmission mechanism. The clamping mechanism is slidably mounted on the base and connected to the driven member. When the clamping mechanism moves in the downward material direction, it can release the clamping state and push the welded part away from the base.

[0005] Further, the welding assembly includes a cylinder, a welding connecting frame, a welding torch, and a welding rack; the welding connecting frame is slidably connected to the base and connected to the cylinder, the cylinder is disposed on the base, and the welding torch is disposed on the welding connecting frame; the welding rack is fixedly connected to the welding connecting member and can drive the driven member to slide unidirectionally through the transmission mechanism. Further, the transmission mechanism includes a gear ring, a rotating assembly, and a pawl assembly; the gear ring is rotatably connected to the base and meshes with the welding rack, and a plurality of ratchet teeth are evenly arranged circumferentially on the inner side of the gear ring; the rotating assembly is rotatably connected to the base and coaxial with the gear ring, and the rotation of the rotating assembly can drive the driven member to rotate; the pawl assembly is eccentrically disposed on the rotating assembly, and the rotation of the gear ring can drive the rotating assembly to rotate unidirectionally through the pawl assembly.

[0006] Furthermore, the rotating assembly includes a turntable, a rotating shaft, and a driven gear; the turntable is rotatably connected to the base, the driven gear is coaxially fixed to the turntable via the rotating shaft, the driven element is a rack and meshes with the driven gear; the pawl assembly is eccentrically disposed on the turntable, and the rotation of the gear ring can drive the turntable to rotate unidirectionally via the pawl assembly.

[0007] Furthermore, the pawl assembly includes a pawl body and a spring; the pawl body is rotatably connected to the turntable and is eccentrically positioned; the pawl body is connected to the turntable via the spring; and the inner ratchet teeth of the toothed ring can drive the turntable to rotate unidirectionally via the pawl body when rotating.

[0008] Furthermore, the clamping mechanism includes an upper fixed plate, a connecting component, a second gear, a clamping component, a side baffle, a limiting component, and an unlocking component; one end of the connecting component is connected to the driven member, and the other end is slidably connected to the upper fixed plate; the second gear is rotatably connected to the upper fixed plate; the clamping component is slidably disposed on the upper fixed plate; the sliding of the connecting component away from the transmission mechanism can drive the clamping component away from the side baffle; the top end of the side baffle is fixedly connected to the upper fixed plate, and the bottom end is slidably connected to the base; the limiting component is vertically and vertically disposed on the upper fixed plate and can limit the position of the connecting component; the unlocking component is fixedly disposed on the base; when the upper fixed plate slides in the downward direction, the unlocking component can first drive the limiting component away from the connecting component, and then drive the connecting component to slide away from the transmission mechanism.

[0009] Furthermore, the connecting assembly includes a connecting slide rod and a second rack; the upper fixed plate is provided with a sliding groove, one end of the connecting slide rod is fixed to the driven member, and the other end is slidably connected to the sliding groove and connected to the second rack, the second rack meshing with the second gear; the second rack is provided with a limiting groove, and the limiting assembly can be inserted into the limiting groove to restrict the movement of the second rack; the unlocking assembly can push the second rack to move towards the side baffle.

[0010] Furthermore, the clamping assembly includes a clamping plate, a clamping link, and a third rack; the clamping plate and the third rack are slidably connected to the upper fixed plate and connected through the clamping link, and the third rack meshes with the second gear.

[0011] Furthermore, the limiting component includes a limiting fixing plate, a lifting plate, and a limiting rod; the limiting fixing plate is fixed on the upper fixing plate, the lifting plate is slidably connected to the limiting fixing plate, and the limiting rod is fixed on the lifting plate and faces the limiting groove.

[0012] Furthermore, the unlocking assembly includes an unlocking fixing plate, a first wedge, and a second wedge; the unlocking fixing plate is fixed on the base, and the first wedge and the second wedge are respectively fixed on the unlocking fixing plate. The first wedge can press the lifting plate to raise it, and the second wedge can press the second rack to move it toward the side baffle.

[0013] The device used in this application is as follows: In the initial state, the driven member is located at the end furthest from the unloading end in its stroke, the limiting rod is inserted into the limiting groove, and the driven member and the driven gear mesh; the welding gun and cylinder are started, the welding rack moves to the unloading end, driving the gear ring to rotate clockwise, the clockwise rotation of the gear ring drives the pawl body to rotate repeatedly, the rotating pawl body cannot drive the turntable to rotate, so the driven gear remains stationary, and the position of the clamping mechanism remains fixed; When the welding assembly begins to reset after welding, the welding rack moves upward, causing the gear ring to rotate counterclockwise, which in turn causes the pawl body to rotate, making the turntable and driven gear rotate counterclockwise together, which in turn causes the driven part to move downward, causing the clamping mechanism to move to the lower material end; after the welded part moves to the unloading end, the first wedge presses against the lifting plate, causing it to rise, so that the limit rod can move away from the limit groove, the second wedge presses against the second rack, causing the second rack to move away from the driven gear, causing the driven part to move away from the driven gear, and at the same time, the second gear drives the third rack to move away from the side baffle, releasing the clamping state of the welded part, so that the welded part can fall into the collection box.

[0014] Compared with the prior art, the advantages of the present invention include: In this application, from the start to the end of welding, the clamping mechanism maintains its position while clamping the weldment. When the welding assembly begins to reset after welding, the transmission mechanism drives the driven part to move in the downward direction, simultaneously moving the clamping mechanism in the downward direction, thereby releasing the clamping of the weldment and allowing it to be unloaded. This application enables the unloading of the weldment automatically during the reset process, making the unloading process more intelligent. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an overall schematic diagram of a plasma welding device according to the present invention; Figure 2 This is a schematic diagram of the transmission mechanism in this invention; Figure 3 This is a schematic diagram of the clamping mechanism of the unlocking component in this invention; Figure 4 This is a schematic diagram of the unlocking component in this invention.

[0017] Figure label: Base 1, Welding assembly 2, Cylinder 21, Welding connecting frame 22, Welding torch 23, Welding rack 24, Transmission mechanism 3, Gear ring 31, Rotating assembly 32, Turntable 321, Rotating shaft 322, Driven gear 323, Pawl assembly 33, Pawl body 331, Spring 332, Driven component 4, Clamping mechanism 5, Upper fixing plate 51, Connecting assembly 52, Connecting slide rod 521, Second rack 522, Second gear 53, Clamping assembly 54, Clamping plate 541, Clamping connecting rod 542, Third rack 543, Side baffle 55, Limiting assembly 56, Limiting fixing plate 561, Lifting plate 562, Limiting rod 563, Unlocking assembly 57, Unlocking fixing plate 571, First wedge 572, Second wedge 573, Collection box 6. Detailed Implementation

[0018] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The technical solution, its implementation process, and principles will be further explained below with reference to the accompanying drawings and specific implementation examples in the embodiments of this application.

[0019] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, the present invention covers any substitutions, modifications, equivalent methods and solutions made on the spirit, principles and scope of the present invention as defined by the claims. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this application, the terms "first," "second," "third," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," and similar words, do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including," and similar words, mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. The terms "connected" or "linked," and similar words, are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0021] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, when using positional terms such as "both sides," "outer side," and "upper and lower," it should be understood that they are used only for ease of understanding and description, taking into account that the structure may be oriented to other positions.

[0022] In the description of this application, unless otherwise expressly specified and limited, the technical or scientific terms used shall have the ordinary meaning understood by a person with ordinary skills in the art to which this application pertains. Terms such as “installation,” “connection,” and “joining” shall be interpreted broadly, for example, as fixed connection, detachable connection, mating connection, or integral connection. For a person skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0023] The present invention aims to introduce and explain the structural composition of a plasma welding device and the cooperation relationship between the various components. Unless otherwise specified, the dimensions, materials and manufacturing processes of the various components in the plasma welding device in the present invention can be selected according to specific circumstances, and no special limitations or explanations are made here.

[0024] Furthermore, to provide the public with a better understanding of the present invention, certain specific details are described in detail in the following description of the invention. However, those skilled in the art will fully understand the invention even without these detailed descriptions.

[0025] Please refer to the following: Figures 1-4 This embodiment provides a plasma welding device, including a base 1, a welding assembly 2, a transmission mechanism 3, a driven component 4, and a clamping mechanism 5; The welding assembly 2 and the driven member 4 are movably mounted on the base 1. Specifically, the welding assembly 2 and the driven member 4 can reciprocate linearly in a fixed direction. In this application, the welding assembly 2 and the driven member 4 can slide back and forth. The transmission assembly is rotatably mounted on the base 1. The sliding of the welding assembly 2 can drive the driven member 4 to slide unidirectionally through the transmission mechanism 3; that is, the sliding of the welding assembly 2 to one side can drive the driven member 4 to slide through the transmission mechanism 3, while the sliding in the opposite direction cannot drive the driven member 4 to slide through the transmission mechanism 3, and the driven member 4 remains stationary. In this application, the direction in which the welding assembly 2 slides during welding does not drive the driven member 4 to slide, while when the welding assembly 2 resets, it drives the driven member 4 to move in the downward direction.

[0026] The clamping mechanism 5 is slidably mounted on the base 1 and connected to the driven member 4. The clamping mechanism 5 can release the clamping state by moving in the downward material direction and push the welded part away from the base 1. That is, the movement of the driven member 4 drives the clamping assembly 54 to move in the downward material direction. After it moves to a certain position, the clamping state on the welded part is released, and the welded part can leave the base 1.

[0027] In this application, from the start to the end of welding, the clamping mechanism 5 maintains its position while clamping the weldment. When welding ends and the welding assembly 2 begins to reset, the transmission mechanism 3 drives the driven member 4 to move in the downward direction, simultaneously driving the clamping mechanism 5 to move in the downward direction, thereby releasing the clamping state of the weldment and allowing the weldment to be unloaded. This application can automatically complete the unloading of the weldment during the reset process, making the unloading process more intelligent.

[0028] In other embodiments, the welding assembly 2 includes a cylinder 21, a welding connecting frame 22, a welding torch 23, and a welding rack 24; the welding connecting frame 22 is slidably connected to the base 1 and connected to the cylinder 21, the cylinder 21 is located on the base 1, and the welding torch 23 is located on the welding connecting frame 22; the welding rack 24 is fixedly connected to the welding connector and can drive the driven member 4 to slide in one direction through the transmission mechanism 3.

[0029] Specifically in this embodiment, the cylinder 21 extends and the welding connecting frame 22 moves in the downward material direction as the welding direction, at which time the driven member 4 remains stationary; after welding is completed, the cylinder 21 shortens and the welding connecting frame 22 moves away from the material feeding direction, at which time the welding rack 24 drives the driven member 4 to move in the downward material feeding direction through the transmission mechanism 3.

[0030] In other embodiments, the transmission mechanism 3 includes a gear ring 31, a rotating assembly 32, and a pawl assembly 33. The gear ring 31 is rotatably connected to the base 1 and meshes with the welding rack 24. A plurality of ratchet teeth are evenly arranged circumferentially on the inner side of the gear ring 31. The rotating assembly 32 is rotatably connected to the base 1 and coaxial with the gear ring 31. The rotation of the rotating assembly 32 can drive the driven member 4 to rotate. The pawl assembly 33 is eccentrically mounted on the rotating assembly 32. The rotation of the gear ring 31 can unidirectionally drive the rotating assembly 32 to rotate via the pawl assembly 33. That is, when the welding assembly 2 is reset, the gear ring 31 drives the rotating assembly 32 to rotate via the pawl assembly 33, the rotating assembly 32 drives the driven member 4 to slide, and the driven member 4 drives the clamping assembly 54 to slide.

[0031] In other embodiments, the rotating assembly 32 includes a turntable 321, a rotating shaft 322, and a driven gear 323. The turntable 321 is rotatably connected to the base 1, and the driven gear 323 is coaxially fixed to the turntable 321 via the rotating shaft 322. The driven member 4 is a rack and pinion that meshes with the driven gear 323. A pawl assembly 33 is eccentrically mounted on the turntable 321, and the rotation of the gear ring 31 can drive the turntable 321 to rotate unidirectionally via the pawl assembly 33. It should be understood that the gear ring 31, turntable 321, rotating shaft 322, and driven gear 323 are coaxial. Furthermore, due to the height difference and radius difference between the driven gear 323 and the gear ring 31, the driven member 4 only meshes with the driven gear 323 and not with the gear ring 31.

[0032] In other embodiments, the pawl assembly 33 includes a pawl body 331 and a spring 332; the pawl body 331 is rotatably connected to the turntable 321 and is eccentrically positioned; the pawl body 331 is connected to the turntable 321 via the spring 332; when the inner ratchet teeth of the toothed ring 31 rotate, they can drive the turntable 321 to rotate unidirectionally via the pawl body 331.

[0033] That is, when the welding rack 24 is reset, the ratchet on the inner side of the gear ring 31 drives the pawl body 331 to rotate together, which in turn drives the turntable 321 to rotate. When welding is in progress, the ratchet on the inner side of the gear ring 31 drives the pawl body 331 to rotate repeatedly without driving the turntable 321 to rotate. Specifically, in this application, in the initial state, the driven member 4 is located at the farthest end from the unloading end. The sliding of the driven member 4 in the unloading direction will drive the driven gear 323 to rotate, which in turn gives the gear ring 31 a tendency to rotate through the pawl. The gear ring 31 and the welding rack 24 are engaged, and the welding rack 24 has a tendency to move. However, this tendency is restricted by the cylinder 21 and cannot be realized. The welding rack 24 remains stationary. Therefore, the tendency of the driven member 4 to move from the farthest end to the unloading end is restricted by the cylinder 21, and the reverse movement cannot continue to move at the beginning of its stroke. Therefore, in the initial state, the front and rear positions of the driven member 4 are fixed and are only driven by the reset of the welding rack 24.

[0034] In other embodiments, the clamping mechanism 5 includes an upper fixed plate 51, a connecting component 52, a second gear 53, a clamping component 54, a side baffle 55, a limiting component 56, and an unlocking component 57. One end of the connecting component 52 is connected to the driven member 4, and the other end is slidably connected to the upper fixed plate 51. The second gear 53 is rotatably connected to the upper fixed plate 51. The clamping component 54 is slidably disposed on the upper fixed plate 51. The sliding of the connecting component 52 away from the transmission mechanism 3 can drive the clamping component 54 away from the side baffle 55. The top of the side baffle 55 is fixedly connected to the upper fixed plate 51, and the bottom is slidably connected to the base 1. The limiting component 56 is vertically and vertically disposed on the upper fixed plate 51 and can limit the position of the connecting component 52. The unlocking component 57 is fixedly disposed on the base 1. When the upper fixed plate 51 slides in the downward direction, the unlocking component 57 can first drive the limiting component 56 away from the connecting component 52, and then drive the connecting component 52 to slide away from the transmission mechanism 3.

[0035] It should be understood that the sliding directions of the connecting component 52 and the clamping component 54 on the upper fixed plate 51 are the same, preferably perpendicular to the sliding direction of the driven member 4. Specifically, in this application, the connecting component 52 and the clamping component 54 preferably slide in the left-right direction. The connecting component 52 and the clamping component 54 can slide towards each other or away from each other through the second gear 53. The upper fixed plate 51 moves back and forth through the driven member 4 and the side baffle 55, and the clamping component 54 clamps and fixes the welded part by sliding towards the side baffle 55. Specifically, before welding begins, the limiting component 56 fixes the connecting component 52 to the position of the upper fixed plate 51, which allows the clamping component 54 to remain clamped. As the upper fixed plate 51 moves in the downward direction, the unlocking component 57 first moves the limiting component 56 away from the connecting component 52, allowing the connecting component 52 to move on the upper fixed plate 51. Then, the unlocking component 57 moves the connecting component 52 towards the side baffle 55, causing the driven member 4 to move away from the driven gear 323 and the clamping component 54 to move away from the side baffle 55. This ensures that the driven member 4 does not drive the driven gear 323 to rotate when resetting.

[0036] In other embodiments, the connecting assembly 52 includes a connecting slide rod 521 and a second rack 522; the upper fixed plate 51 is provided with a sliding groove, one end of the connecting slide rod 521 is fixed to the driven member 4, and the other end is slidably connected to the sliding groove and connected to the second rack 522, the second rack 522 meshing with the second gear 53; the second rack 522 is provided with a limiting groove, and a limiting assembly 56 can be inserted into the limiting groove to restrict the movement of the second rack 522; the unlocking assembly 57 can push the second rack 522 to move towards the side baffle 55. It should be understood that the second sliding groove is an elongated through hole and is perpendicular to the sliding direction of the driven member 4.

[0037] In other embodiments, the clamping assembly 54 includes a clamping plate 541, a clamping link 542, and a third rack 543; the clamping plate 541 and the third rack 543 are slidably connected to the upper fixed plate 51 and connected by the clamping link 542, and the third rack 543 meshes with the second gear 53. It should be understood that the third rack 543, the clamping plate 541, and the second rack 542 move in the same direction, the third rack 543 is located at the top of the upper fixed plate 51, and the clamping plate 541 is located at the bottom of the upper fixed plate 51.

[0038] In other embodiments, the limiting assembly 56 includes a limiting fixing plate 561, a lifting plate 562, and a limiting rod 563; the limiting fixing plate 561 is fixed to the upper fixing plate 51, the lifting plate 562 is slidably connected to the limiting fixing plate 561, and the limiting rod 563 is fixed to the lifting plate 562 and faces the limiting groove. It should be understood that the size and shape of the limiting rod 563 correspond to the limiting groove and can be inserted into the limiting groove.

[0039] In other embodiments, the unlocking assembly 57 includes an unlocking fixing plate 571, a first wedge 572, and a second wedge 573. The unlocking fixing plate 571 is fixed to the base 1, and the first wedge 572 and the second wedge 573 are respectively fixed to the unlocking fixing plate 571. The first wedge 572 can press the lifting plate 562 to raise it, and the second wedge 573 can press the second rack 522 to move it toward the side baffle 55. It should be understood that the second wedge 573 only contacts the second rack 522 after the first wedge 572 has pressed the lifting plate 562 to raise it and move it away from the limiting groove.

[0040] Preferably, a collection box is also provided at the feeding end, and a back plate is also provided on one side of the side baffle 55. The welded parts abut against the back plate or against the end face of the upper fixing plate 51.

[0041] The device used in this application is as follows: In the initial state, the driven member 4 is located at the end furthest from the unloading end in its stroke, the limiting rod 563 is inserted into the limiting groove, and the driven member 4 and the driven gear 323 mesh; the welding torch 23 and the cylinder 21 are started, the welding rack 24 moves to the unloading end, driving the gear ring 31 to rotate clockwise, the gear ring 31 rotates clockwise and drives the pawl body 331 to rotate repeatedly, the rotating pawl body 331 cannot drive the turntable 321 to rotate, so the driven gear 323 remains stationary and the position of the clamping mechanism 5 remains fixed; When the welding assembly 2 begins to reset after welding is completed, the welding rack 24 moves upward, causing the gear ring 31 to rotate counterclockwise, which in turn causes the pawl body 331 to rotate together, so that the turntable 321 and the driven gear 323 rotate counterclockwise together, which in turn causes the driven part 4 to move downward, so that the clamping mechanism 5 moves to the material end; after the welded part moves to the material end, the first wedge 572 presses the lifting plate 562, causing it to rise, so that the limit rod 563 can move away from the limit groove, the second wedge 573 presses the second rack 522, causing the second rack 522 to move away from the driven gear 323, causing the driven part 4 to move away from the driven gear 323, and at the same time, through the second gear 53, the third rack 543 and the clamping plate 541 move away from the side baffle 55, releasing the clamping state of the welded part, so that the welded part can fall into the collection box 6; When welding again, simply push the driven member 4 back to the starting point of the stroke, slide the second rack 522 to insert the limiting rod 563 into the limiting groove, so that the driven member 4 and the driven gear 323 mesh. During the movement of the second rack 522, the clamping plate 541 is moved towards the side baffle 55 by the third rack 543 to clamp the welded part.

[0042] The plasma welding device described above can automatically complete the unloading and clamping of the weldment during spot welding reset.

[0043] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A plasma welding apparatus, characterized in that: Includes a base, welding components, transmission mechanism, driven component, and clamping mechanism; The welding assembly and the driven member are movably mounted on the base, and the transmission assembly is rotatably mounted on the base. The sliding of the welding assembly can drive the driven member to slide in one direction through the transmission mechanism. The clamping mechanism is slidably mounted on the base and connected to the driven member. When the clamping mechanism moves in the downward material direction, it can release the clamping state and push the welded part away from the base.

2. The plasma welding apparatus according to claim 1, characterized in that: The welding assembly includes a cylinder, a welding connecting frame, a welding torch, and a welding rack; the welding connecting frame is slidably connected to the base and connected to the cylinder, the cylinder is located on the base, and the welding torch is located on the welding connecting frame; the welding rack is fixedly connected to the welding connecting component and can drive the driven component to slide unidirectionally through the transmission mechanism.

3. The plasma welding apparatus according to claim 2, characterized in that: The transmission mechanism includes a gear ring, a rotating assembly, and a pawl assembly. The gear ring is rotatably connected to the base and meshes with the welded rack. A plurality of ratchet teeth are evenly arranged circumferentially on the inner side of the gear ring. The rotating assembly is rotatably connected to the base and coaxial with the gear ring. The rotation of the rotating assembly can drive the driven member to rotate. The pawl assembly is eccentrically disposed on the rotating assembly. The rotation of the gear ring can drive the rotating assembly to rotate unidirectionally through the pawl assembly.

4. The plasma welding apparatus according to claim 3, characterized in that: The rotating assembly includes a turntable, a rotating shaft, and a driven gear; the turntable is rotatably connected to the base, the driven gear is coaxially fixed to the turntable via the rotating shaft, the driven element is a rack and meshes with the driven gear; the pawl assembly is eccentrically mounted on the turntable, and the rotation of the toothed ring can drive the turntable to rotate unidirectionally via the pawl assembly.

5. The plasma welding apparatus according to claim 4, characterized in that: The pawl assembly includes a pawl body and a spring; the pawl body is rotatably connected to the turntable and is eccentrically positioned; the pawl body is connected to the turntable via the spring; when the inner ratchet teeth of the toothed ring rotate, they can drive the turntable to rotate unidirectionally via the pawl body.

6. The plasma welding apparatus according to claim 1, characterized in that: The clamping mechanism includes an upper fixed plate, a connecting assembly, a second gear, a clamping assembly, a side baffle, a limiting assembly, and an unlocking assembly; one end of the connecting assembly is connected to the driven member, and the other end is slidably connected to the upper fixed plate; The second gear is rotatably connected to the upper fixed plate. The clamping assembly is slidably disposed on the upper fixed plate. The sliding of the connecting assembly away from the transmission mechanism can drive the clamping assembly away from the side baffle. The top of the side baffle is fixedly connected to the upper fixed plate, and the bottom is slidably connected to the base. The limiting assembly is vertically and vertically disposed on the upper fixed plate and can limit the position of the connecting assembly. The unlocking assembly is fixedly disposed on the base. When the upper fixed plate slides in the downward material direction, the unlocking assembly can first drive the limiting assembly away from the connecting assembly, and then drive the connecting assembly to slide away from the transmission mechanism.

7. A plasma welding apparatus according to claim 6, characterized in that: The connecting assembly includes a connecting slide rod and a second rack; the upper fixed plate is provided with a sliding groove, one end of the connecting slide rod is fixed to the driven member, and the other end is slidably connected to the sliding groove and connected to the second rack, which meshes with the second gear; the second rack is provided with a limiting groove, and the limiting assembly can be inserted into the limiting groove to restrict the movement of the second rack; the unlocking assembly can push the second rack to move towards the side baffle.

8. A plasma welding apparatus according to claim 7, characterized in that: The clamping assembly includes a clamping plate, a clamping link, and a third rack; the clamping plate and the third rack are slidably connected to the upper fixed plate and connected by the clamping link, and the third rack meshes with the second gear.

9. A plasma welding apparatus according to claim 8, characterized in that: The limiting assembly includes a limiting fixing plate, a lifting plate, and a limiting rod; the limiting fixing plate is fixed on the upper fixing plate, the lifting plate is slidably connected to the limiting fixing plate, and the limiting rod is fixed on the lifting plate and faces the limiting groove.

10. A plasma welding apparatus according to claim 9, characterized in that: The unlocking assembly includes an unlocking fixing plate, a first wedge, and a second wedge. The unlocking fixing plate is fixed to the base, and the first wedge and the second wedge are respectively fixed to the unlocking fixing plate. The first wedge can press the lifting plate to raise it, and the second wedge can press the second rack to move it toward the side baffle.

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