CN220427317U - Novel workpiece welding fixture - Google Patents

Abstract

The utility model discloses a novel workpiece welding fixture which comprises a support frame, a fastening component and a clamping plate, wherein an abutting plate is fixedly arranged on the upper surface of the support frame, an electric push rod is fixedly arranged on the upper surface of the support frame, a push rod is fixedly arranged at one end of a piston rod of the electric push rod, the push rod is horizontally opposite to the abutting plate, a rotating groove is formed in the upper surface of the push rod, the fastening component is movably arranged in the rotating groove, the clamping plate is detachably arranged at one end of the push rod, and the clamping plate can be fastened and connected through the fastening component. The clamping plate clamping device has the advantages that the clamping plates which are suitable for clamping materials with different materials can be replaced according to the clamped materials, so that the situation that the materials are clamped to deform or the situation that the clamping of smooth materials is unstable when the materials are clamped can be avoided.

Description

Novel workpiece welding fixture

Technical Field

The utility model belongs to the technical field of clamps, and particularly relates to a novel workpiece welding clamp.

Background

The welding process is a process of integrating two or more kinds of same or different materials through combination and diffusion between atoms or molecules, and generally for welding metal materials, the welding process is mainly divided into melting, welding, pressure welding and brazing according to the characteristics of the process, and the publication number is: CN215432308U, a novel work piece welding frock clamp, the on-line screen storage device comprises a workbench, workstation one side rotates and is provided with first gear, workstation bottom both sides fixed mounting has the bracing piece, the bracing piece bottom slides and is provided with the fixed block, fixed block one side is fixedly provided with servo motor, the inside screw rod that rotates and is provided with bracing piece threaded connection of fixed block, workstation top both sides slide and are provided with the movable block, adjacent one side of movable block is provided with the stripper plate, the utility model, through the handle rotation second gear, thereby the two-way lead screw rotation on the first gear has been driven, the closure and the opening of stripper plate on the movable block on slider top have been driven, so effectual realization adjusts corresponding clamp distance according to the size of work piece, carry out preliminary protection to the work piece through the protection pad, the buffer spring is extruded to the buffer bar simultaneously, thereby holistic buffering protection effect has been strengthened.

The problems with the above techniques are: when the clamping operation is carried out on materials with different materials, the device can not replace the matched clamping plates according to the materials with different materials, and the situation that the materials are clamped to deform or the situation that the clamping is unstable when the smooth materials are clamped appears, so that a novel workpiece welding fixture is provided.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides a novel workpiece welding clamp which is provided with clamping plates which can be replaced according to clamped materials when materials with different materials are clamped, so that the situation that the materials are clamped to deform or the situation that the materials are clamped to be unstable when smooth materials are clamped can be avoided, and the problems that the clamping plates which are matched cannot be replaced according to the materials with different materials, the materials are clamped to deform or the situation that the materials are clamped to be unstable when the materials with different materials are clamped are solved.

The novel workpiece welding fixture comprises a support frame, a fastening component and a clamping plate, wherein an abutting plate is fixedly arranged on the upper surface of the support frame, an electric push rod is fixedly arranged on the upper surface of the support frame, a push rod is fixedly arranged at one end of a piston rod of the electric push rod, the push rod is horizontally opposite to the abutting plate, a rotating groove is formed in the upper surface of the push rod, the fastening component is movably arranged in the rotating groove, the clamping plate is detachably arranged at one end of the push rod, and the clamping plate can be fastened and connected through the fastening component.

As the preferable mode of the utility model, one end of the ejector rod is provided with a plugging groove, a plugging block can be plugged in the plugging groove, one end of the plugging block is fixedly provided with a clamping plate, and the clamping plates can be horizontally opposite to the butt joint plate.

As preferable in the utility model, the upper surface of the plug-in block is provided with a fastening groove, the fastening groove is vertically opposite to the fastening component when the plug-in block is plugged into the plug-in groove, and the fastening component can be plugged into the fastening groove.

As preferable in the utility model, the fastening component comprises a rotating column, the rotating column is movably arranged in a rotating groove, a rotating disc is fixedly arranged on the outer surface of the rotating column, a limiting disc is fixedly arranged on the outer surface of the rotating column, the limiting disc is movably arranged in the limiting groove, the limiting groove is arranged in the ejector rod, and the limiting groove is mutually communicated with the rotating groove.

As preferable in the utility model, the external surface of the rotary column is provided with a positive thread and a negative thread, the positive thread and the negative thread are movably positioned in the rotary groove, the external surfaces of the positive thread and the negative thread are respectively provided with a lantern ring, and the lantern rings are movably arranged in the rotary groove.

As the preferable mode of the utility model, the outer surface of the lantern ring is fixedly provided with the guide rail block, the guide rail block is movably arranged in the guide rail groove, the guide rail groove is arranged in the rotating groove, one end of the outer surface of the lantern ring is fixedly provided with the connecting plate, the connecting plate is movably arranged in the connecting groove, the connecting groove is arranged at one end of the rotating groove, and the connecting groove is communicated with the rotating groove.

As the preferable mode of the utility model, the upper surface and the lower surface of the two groups of connecting plates are fixedly provided with the plug-in posts, the plug-in posts can be driven by the connecting plates to be accommodated in the connecting grooves, the fastening grooves formed in the surfaces of the plug-in blocks are vertically opposite to the plug-in posts when the plug-in blocks are plugged and installed in the plug-in grooves, and the plug-in posts can be plugged and installed in the fastening grooves.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the clamping device, through the design of the fastening component, the clamping plates, the butt joint plates, the electric push rods and the ejector rods, when materials are clamped, the materials can be placed on the upper surface of the supporting frame, then the electric push rods can be started to push one ends of the piston rods to fixedly mount the ejector rods to the inside for approaching, and the clamping plates are detachably arranged at one ends of the ejector rods, so that the clamping plates can be driven to move to the inside for approaching, the materials can be clamped between the clamping plates and the butt joint plates so as to facilitate welding operation of the materials by workers, and when materials of different materials are clamped, the clamping plates can be unlocked by rotating the fastening component, so that the clamping plates can be pulled out from one ends of the ejector rods, then the clamping plates which are suitable for clamping materials can be selected to be inserted into the ejector rods can be inserted into the ejector rods for locking operation, and then the clamping operation can be performed on the materials according to the clamped materials, so that the situation that the materials are deformed when the materials are clamped can be prevented, or the situation that the smooth materials are unstable in clamping can be prevented.

2. According to the utility model, through the design of the ejector rod, the inserting groove, the inserting block, the clamping plate and the abutting plate, when the clamping plate is replaced, the fastening component can be rotated to enable the clamping plate to be separated from the fastening groove, so that the clamping plate can drive the inserting block to be replaced to be pulled out of the inserting groove, the inserting block can be driven to be inserted and installed into the inserting groove by the clamping plate, the fastening component can be reversed to be inserted and installed into the fastening groove formed in the surface of the inserting block after the inserting block is completely inserted into the inserting groove, and therefore the inserting block is limited and fixed in the inserting groove, the matched clamping plate can be replaced according to clamped materials, and the situation that the materials are clamped to deform or the clamping of smooth materials is unstable can be avoided.

3. According to the clamping plate clamping device, through the design of the plug-in block, the fastening groove, the plug-in groove and the fastening component, when the clamping plate is replaced, the fastening component can be rotated to enable the clamping plate to be separated from the fastening groove, so that the clamping plate can drive the plug-in block to be replaced to be pulled out of the plug-in groove, the plug-in block can be driven to be plugged and installed into the plug-in groove by the clamping plate to be replaced, the fastening component can be reversed to be plugged and installed into the fastening groove formed in the surface of the plug-in block after the plug-in block is completely plugged into the plug-in groove, the plug-in block can be limited and fixed in the plug-in groove, and the clamping plate which is suitable for the clamping plate can be replaced according to clamped materials, so that the situation that the materials are clamped to deform when the materials are clamped or the smooth materials are clamped is prevented.

4. According to the utility model, through the design of the rotating column, the rotating groove, the rotating disc and the limiting disc, when the clamping plate is disassembled and replaced, the rotating disc can be used for driving the rotating column to rotate in the rotating groove, and the limiting disc fixedly arranged on the outer surface of the rotating column can rotate in the limiting groove formed in the rotating groove when the rotating column rotates in the rotating groove, so that the rotating column has stability when rotating, and the condition that the rotating column deflects rails when rotating can be avoided.

5. According to the utility model, through the design of the rotating column, the positive thread, the reverse thread, the rotating groove and the lantern ring, the rotating column is driven to drive the positive thread and the reverse thread arranged on the outer surface to rotate together when rotating, and the lantern rings are arranged on the outer surfaces of the positive thread and the reverse thread, so that the two sets of collars can be driven to synchronously expand outwards or synchronously draw close inwards.

6. According to the utility model, through the design of the lantern rings, the guide rail blocks, the guide rail grooves and the connecting plates, when the two groups of lantern rings are driven to move by the positive threads and the negative threads, the lantern rings can slide in the guide rail grooves formed in the rotating grooves through the guide rail blocks fixedly arranged on the outer surfaces of the lantern rings, so that the lantern rings have a linear guide rail function when driven to move, and the connecting plates are fixedly arranged at one end of the outer surfaces of the lantern rings, so that the connecting plates can be driven to be stored in the connecting grooves or slide out of the connecting grooves.

7. According to the clamping plate, when the clamping plate is replaced, the rotating disc can be rotated to drive the two sets of sleeve rings to synchronously expand outwards, so that the sleeve rings can drive the clamping post fixedly arranged at one end of the connecting plate to be pulled out of the fastening groove, the clamping plate can drive the clamping block to be pulled out of the clamping groove without limiting fixing force, the clamping plate which needs to be replaced can drive the clamping block to be inserted and arranged into the clamping groove until the clamping block is completely inserted into the clamping groove, the fastening groove is driven to vertically face the clamping post, and then the rotating disc can be reversed to drive the two sets of sleeve rings to synchronously and inwards close, so that the clamping post can be driven to be inserted and arranged into the fastening groove, the clamping block can be limited and fixed in the clamping groove, the matched clamping plate can be replaced according to clamped materials, and the situation that the materials are deformed or the smooth materials are clamped can be prevented when the materials are clamped can be prevented.

Drawings

FIG. 1 is a schematic perspective view of an overall structure provided in an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a splint according to an embodiment of the present utility model;

FIG. 3 is a schematic perspective view of a fastening slot and plug structure according to an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of a fastening assembly according to an embodiment of the present utility model;

fig. 5 is a schematic perspective view of a limiting disc structure according to an embodiment of the present utility model;

fig. 6 is a schematic perspective view of a structure of a rotating groove and a guide rail groove according to an embodiment of the present utility model.

In the figure: 1. a support frame; 101. an abutting plate; 2. an electric push rod; 201. a push rod; 202. a plug-in groove; 203. a limit groove; 204. a rotating groove; 205. a guide rail groove; 206. a connecting groove; 3. a clamping plate; 301. a fastening groove; 302. a plug block; 4. a fastening assembly; 401. a rotating disc; 402. rotating the column; 403. a limiting disc; 404. a positive thread; 405. a reverse thread; 406. a collar; 407. a guide rail block; 408. a connecting plate; 409. and (5) plugging the column.

Detailed Description

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.

The structure of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 6, the novel workpiece welding fixture provided by the embodiment of the utility model comprises a support frame 1, a fastening component 4 and a clamping plate 3, wherein an abutting plate 101 is fixedly arranged on the upper surface of the support frame 1, an electric push rod 2 is fixedly arranged on the upper surface of the support frame 1, a push rod 201 is fixedly arranged at one end of a piston rod of the electric push rod 2, the push rod 201 is horizontally opposite to the abutting plate 101, a rotating groove 204 is formed in the upper surface of the push rod 201, the fastening component 4 is movably arranged in the rotating groove 204, the clamping plate 3 is detachably arranged at one end of the push rod 201, and the clamping plate 3 can be fastened and connected through the fastening component 4.

The scheme is adopted: through the design of fastening component 4, splint 3, butt joint board 101, electric putter 2, ejector pin 201, during the operation when carrying out the centre gripping to the material, the accessible is placed the material in support frame 1 upper surface department, can start electric putter 2 promotion piston rod one end fixed mounting has ejector pin 201 to draw close to inside afterwards, and ejector pin 201 one end demountable installation has splint 3, thereby just can drive splint 3 to remove and draw close to inside, so as to reach and carry out welding operation with the material centre gripping between splint 3 and butt joint board 101 in order to be convenient for the staff, and carry out the unblock operation to splint 3 when carrying out the centre gripping operation to the material of different materials, thereby just can extract splint 3 from ejector pin 201 one end, later the splint 3 that optional and centre gripping material suited are pegged graft and are installed in ejector pin 201, later can reverse fastening component 4 and carry out the locking operation with the splint 3 of jack-in ejector pin 201, can carry out the centre gripping operation to the material, thereby can change the splint 3 that suits according to the material of centre gripping, thereby just can avoid leading to the material to when centre gripping material to be carried out the condition that is deformed by the centre gripping, or the steady condition appears when carrying out the centre gripping to the material when carrying out the centre gripping.

Referring to fig. 4, an insertion groove 202 is formed at one end of the ejector rod 201, an insertion block 302 is inserted into the insertion groove 202, a clamping plate 3 is fixedly mounted at one end of the insertion block 302, and the clamping plate 3 can be horizontally opposite to the connecting plate 101.

The scheme is adopted: through ejector pin 201, jack groove 202, grafting piece 302, splint 3, the design of butt joint board 101, when changing splint 3, accessible rotation fastening component 4 makes it break away from fastening groove 301, thereby splint 3 just can drive jack block 302 and extract from jack groove 202, can drive the grafting piece 302 with splint 3 that needs to change and peg graft and install into jack groove 202, until after jack block 302 is pegged graft completely in jack groove 202, can reverse fastening component 4 in order to peg graft and install into the fastening groove 301 that jack block 302 surface department was offered, thereby reach and fix jack block 302 spacing in jack groove 202, thereby can change splint 3 that suits according to the material of centre gripping, thereby just can avoid when the centre gripping material the condition that causes the material to be held to appear warping, or appear the unstable condition of centre gripping when carrying out centre gripping to smooth material.

Referring to fig. 4, fastening grooves 301 are formed on the upper surfaces of the plugging blocks 302, and when the plugging blocks 302 are plugged into the plugging grooves 202, the fastening grooves 301 are vertically opposite to the fastening components 4, and the fastening components 4 can be plugged into the fastening grooves 301.

The scheme is adopted: through the design of the inserting block 302, the fastening groove 301, the inserting groove 202 and the fastening component 4, when the clamping plate 3 is replaced, the fastening component 4 can be rotated to enable the clamping plate 3 to be separated from the fastening groove 301, so that the clamping plate 3 can drive the inserting block 302 to be pulled out of the inserting groove 202, the clamping plate 3 to be replaced can drive the inserting block 302 to be inserted and installed into the inserting groove 202, after the inserting block 302 is completely inserted into the inserting groove 202, the fastening component 4 can be reversed to be inserted and installed into the fastening groove 301 formed in the surface of the inserting block 302, and therefore the inserting block 302 is limited and fixed in the inserting groove 202, the clamping plate 3 suitable for the clamping can be replaced according to clamped materials, and therefore the situation that the materials are clamped to deform or the smooth materials are clamped can be avoided.

Referring to fig. 4, the fastening assembly 4 includes a rotating column 402, the rotating column 402 is movably mounted in the rotating groove 204, a rotating disc 401 is fixedly mounted on the outer surface of the rotating column 402, a limiting disc 403 is fixedly mounted on the outer surface of the rotating column 402, the limiting disc 403 is movably mounted in the limiting groove 203, the limiting groove 203 is formed in the ejector rod 201, and the limiting groove 203 is mutually communicated with the rotating groove 204.

The scheme is adopted: through the design of rotation post 402, rotation groove 204, rolling disc 401, spacing dish 403, when dismantling the change to splint 3, the accessible rotates rolling disc 401 and rotates the operation in rotation groove 204 with drive rotation post 402, and rotation post 402 rotates the operation in rotation groove 204 in can rotate the operation in the spacing groove 203 of seting up in rotation groove 204 through surface fixed mounting's spacing dish 403 to can make rotation post 402 have stationarity when rotating, can avoid rotation post 402 appear the condition of off tracking when rotating to appear.

Referring to fig. 4, the outer surface of the rotating post 402 is provided with a positive thread 404 and a negative thread 405, the positive thread 404 and the negative thread 405 are movably located in the rotating groove 204, the outer surfaces of the positive thread 404 and the negative thread 405 are both provided with a collar 406, and the collar 406 is movably installed in the rotating groove 204.

The scheme is adopted: through the design of the rotating column 402, the positive thread 404, the reverse thread 405, the rotating groove 204 and the lantern ring 406, the rotating column 402 is driven to rotate together with the positive thread 404 and the reverse thread 405 which are arranged on the outer surface, and the lantern rings 406 are arranged on the outer surfaces of the positive thread 404 and the reverse thread 405, so that the two groups of lantern rings 406 can be driven to synchronously expand outwards or synchronously draw close inwards.

Referring to fig. 4, a guide rail block 407 is fixedly mounted on the outer surface of the collar 406, the guide rail block 407 is movably mounted in the guide rail groove 205, the guide rail groove 205 is formed in the rotating groove 204, a connecting plate 408 is fixedly mounted at one end of the outer surface of the collar 406, the connecting plate 408 is movably mounted in the connecting groove 206, the connecting groove 206 is formed at one end of the rotating groove 204, and the connecting groove 206 is communicated with the rotating groove 204.

The scheme is adopted: through the design of the lantern rings 406, the guide rail blocks 407, the guide rail grooves 205 and the connecting plates 408, when the lantern rings 406 are driven to move by the positive threads 404 and the negative threads 405, the lantern rings 406 can slide in the guide rail grooves 205 formed in the rotating grooves 204 through the guide rail blocks 407 fixedly arranged on the outer surfaces, so that the lantern rings 406 have the linear guide rail function when driven to move, and the connecting plates 408 are fixedly arranged at one end of the outer surfaces of the lantern rings 406, so that the connecting plates 408 can be driven to be accommodated in the connecting grooves 206 or slide out of the connecting grooves 206.

Referring to fig. 4, the upper and lower surfaces of the two sets of connection plates 408 are fixedly provided with plug-in columns 409, the plug-in columns 409 can be driven by the connection plates 408 to be received in the connection grooves 206, and when the plug-in blocks 302 are plugged and mounted in the plug-in grooves 202, the fastening grooves 301 formed at the surfaces are vertically opposite to the plug-in columns 409, and the plug-in columns 409 can be plugged and mounted in the fastening grooves 301.

The scheme is adopted: through the design of connecting plate 408, spliced pole 409, connecting groove 206, spliced groove 202, fastening groove 301, when changing splint 3, accessible rotation rolling disc 401 is in order to drive two sets of lantern rings 406 and outwards expand in step, thereby lantern ring 406 just can drive spliced pole 409 of connecting plate 408 one end fixed mounting and extract from fastening groove 301, thereby spliced block 302 receives spacing stationary force promptly, splint 3 just can drive spliced block 302 and extract from spliced groove 202, can drive spliced block 302 grafting installation into spliced groove 202 with splint 3 that need change, until spliced block 302 is pegged graft completely and is pegged graft in spliced groove 202 in the back, can drive fastening groove 301 and spliced pole 409 perpendicularly relatively, afterwards, can reverse rolling disc 401 in order to drive two sets of lantern rings 406 and inwards draw close in step, thereby just can drive spliced pole 409 grafting installation into fastening groove 301, thereby reach and fix spliced block 302 in spliced groove 202 in the spacing, thereby can change adaptive splint 3 according to the material of centre gripping, just can avoid leading to the condition that will be material to be clamped deformation when centre gripping material, perhaps the condition appears in the time of carrying out steady centre gripping to the material.

The working principle of the utility model is as follows:

when in use, during the operation of clamping materials, the materials can be placed on the upper surface of the support frame 1, then the electric push rod 2 can be started to push the end of the piston rod to fixedly install the push rod 201 to approach inwards, the clamp plate 3 can be driven to move inwards by the detachable installation of one end of the push rod 201, so that the materials can be clamped between the clamp plate 3 and the butt plate 101 to facilitate the welding operation of workers on the materials, the clamp plate 3 can be detached and replaced when the materials with different materials are clamped, the clamping operation of the matched clamp plate 3 is selected, the clamp plate 3 is replaced, the rotating disc 401 can be rotated to drive the two groups of lantern rings 406 to synchronously expand outwards, the lantern rings 406 can drive the plug-in posts 409 fixedly installed at one end of the connecting plate 408 to be pulled out from the fastening grooves 301, therefore, the plugging block 302 is not subjected to limiting fixing force, the clamping plate 3 can drive the plugging block 302 to be pulled out of the plugging groove 202, the clamping plate 3 to be replaced can drive the plugging block 302 to be plugged into the plugging groove 202 until the plugging block 302 is completely plugged into the plugging groove 202, the fastening groove 301 is driven to be vertically opposite to the plugging column 409, then the rotating disc 401 can be reversed to drive the two groups of lantern rings 406 to synchronously and inwards close, the plugging column 409 can be driven to be plugged into the fastening groove 301, the plugging block 302 can be limited and fixed in the plugging groove 202, the matched clamping plate 3 can be replaced according to clamped materials, and therefore the situation that the materials are deformed when clamped or the smooth materials are clamped can be avoided.

To sum up: this novel work piece welding jig, through support frame 1, butt plate 101, electric putter 2, ejector pin 201, grafting groove 202, spacing groove 203, rotate groove 204, guide rail groove 205, spread groove 206, splint 3, fastening groove 301, cooperation between grafting piece 302 and the fastening assembly 4, solved above-mentioned device when carrying out the centre gripping operation to the material of different materials, can not change the splint that suits according to the material of different materials, can appear the material centre gripping the condition of deformation appear, perhaps appear the unstable condition of centre gripping appears when carrying out the centre gripping to glossy material problem.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a novel work piece welding jig, includes support frame (1), fastening component (4) and splint (3), its characterized in that: the utility model discloses a support frame, including support frame (1), support frame (1) upper surface fixed mounting has butt joint board (101), support frame (1) upper surface fixed mounting has electric putter (2), electric putter (2) piston rod one end fixed mounting has ejector pin (201), ejector pin (201) are relative with butt joint board (101) level, rotation groove (204) have been seted up to ejector pin (201) upper surface, movable mounting has fastening assembly (4) in rotation groove (204), and clamping plate (3) are detachably installed to ejector pin (201) one end, clamping plate (3) accessible fastening assembly (4) fastening connection.

2. A novel workpiece welding fixture as defined in claim 1, wherein: the push rod (201) is characterized in that one end of the push rod (201) is provided with a plug groove (202), a plug block (302) can be inserted in the plug groove (202), one end of the plug block (302) is fixedly provided with a clamping plate (3), and the clamping plate (3) can be horizontally opposite to the connecting plate (101).

3. A novel workpiece welding fixture as defined in claim 2, wherein: the upper surfaces of the plug blocks (302) are provided with fastening grooves (301), the fastening grooves (301) are vertically opposite to the fastening components (4) when the plug blocks (302) are inserted and installed in the plug grooves (202), and the fastening components (4) can be inserted and installed in the fastening grooves (301).

4. A novel workpiece welding fixture as defined in claim 3, wherein: the fastening assembly (4) comprises a rotating column (402), the rotating column (402) is movably mounted in the rotating groove (204), a rotating disc (401) is fixedly mounted on the outer surface of the rotating column (402), a limiting disc (403) is fixedly mounted on the outer surface of the rotating column (402), the limiting disc (403) is movably mounted in the limiting groove (203), the limiting groove (203) is formed in the ejector rod (201), and the limiting groove (203) is mutually communicated with the rotating groove (204).

5. A novel workpiece welding fixture as defined in claim 4, wherein: the external surface of the rotating column (402) is provided with a positive thread (404) and a reverse thread (405), the positive thread (404) and the reverse thread (405) are movably arranged in the rotating groove (204), the external surfaces of the positive thread (404) and the reverse thread (405) are both provided with a lantern ring (406), and the lantern ring (406) is movably arranged in the rotating groove (204).

6. A novel workpiece welding fixture as defined in claim 5, wherein: the novel anti-theft device is characterized in that a guide rail block (407) is fixedly arranged on the outer surface of the collar (406), the guide rail block (407) is movably arranged in the guide rail groove (205), the guide rail groove (205) is formed in the rotating groove (204), a connecting plate (408) is fixedly arranged at one end of the outer surface of the collar (406), the connecting plate (408) is movably arranged in the connecting groove (206), the connecting groove (206) is formed in one end of the rotating groove (204), and the connecting groove (206) is communicated with the rotating groove (204).

7. A novel workpiece welding fixture as defined in claim 6, wherein: the two groups of connecting plates (408) are fixedly provided with plug-in columns (409) on the upper surface and the lower surface, the plug-in columns (409) can be driven by the connecting plates (408) to be stored in the connecting grooves (206), the fastening grooves (301) formed in the surface when the plug-in blocks (302) are installed in the plug-in grooves (202) in a plug-in mode can be vertically opposite to the plug-in columns (409), and the plug-in columns (409) can be installed in the fastening grooves (301) in a plug-in mode.