Welding device for automobile steel structure product machining

Abstract

The invention provides a welding device for automobile steel structure product machining, and relates to the technical field of fixing devices.The welding device comprises an adjusting rod, the adjusting rod is inserted into a driving wheel set, and a dual-mode driving assembly can adjust and control the rotating speed of a positioning rod; therefore, a worker can quickly or carefully adjust the clamping distance of the positioning and fixing assembly through the dual-mode driving assembly according to actual adjustment requirements, and the fixing device is convenient and flexible to use and solves the problem that the adjusting speed of an adjusting screw rod of an existing fixing device is fixed; and during large-stroke clamping distance adjustment, adjustment of the large-stroke clamping distance can be achieved only by rotating an adjusting screw rod by multiple circles, the steps are tedious, and use is troublesome.

Description

Technical Field

[0001] The present invention relates to the technical field of fixing devices, and particularly to a welding device for processing automotive steel structure products. Background Art

[0002] Automotive steel structures include: body structure (white body); load-bearing body: modern passenger cars mostly adopt load-bearing structures, and the body frame composed of steel has both support and collision energy absorption functions; key parts: A-pillars, B-pillars, roof longitudinal beams, sill beams, etc. use ultra-high-strength steel (UHSS) to improve impact resistance. Lightweight design: By using high-strength steel (such as DP steel, TRIP steel), the material thickness is reduced, and the weight is reduced while maintaining strength.

[0003] However, as for the fixing devices of current steel structure welding devices, the most commonly used ones are chucks and bench vises. When the chuck is used for fixing, the steel structure member can only be fixed at one end of the steel structure member, and it is impossible to clamp from the middle of the steel structure member, so the adaptability is poor. While the bench vise usually has only two fixing points when fixing, and it is very easy to damage and squeeze the steel structure member (especially for hollow cylindrical workpieces) when fixing the steel structure member, so the stability is poor. Moreover, the adjustment rate of the adjustment screw of the existing fixing device is fixed, and it is necessary to rotate the adjustment screw many times to achieve the adjustment of the large stroke clamping distance when performing the adjustment of the large stroke clamping distance, so the flexibility is poor and the practicality is not high. Summary of the Invention

[0004] In view of this, the present invention provides a welding device for processing automotive steel structure products, which has a positioning and fixing assembly and a dual-mode driving assembly. The positioning and fixing assembly can perform four-point clamping and positioning fixation on the steel structure member, which is convenient to use, the force on the steel structure member is uniform, and the stability is extremely strong. Moreover, both the positioning housing and the linkage frame are in a "U" shape, so that the middle part of the steel structure member can be placed into the inside of the positioning and fixing assembly through the top of the positioning and fixing assembly for positioning and fixing, which is convenient for subsequent welding processing operations, and the adaptability is extremely strong. And the dual-mode driving assembly of the device can control the rotation rate of the positioning rod, so that the worker can quickly or finely adjust the clamping distance of the positioning and fixing assembly through the dual-mode driving assembly according to the actual adjustment requirements, which is convenient, flexible, and has extremely strong flexibility, adaptability, stability and practicality.

[0005] The present invention provides a welding device for processing automobile steel structure products, specifically including: a positioning and fixing component, which includes a positioning housing, a linkage frame, and a fixing block. The linkage frame is inserted inside the positioning housing, and the fixing block is inserted inside the linkage frame; a dual-mode driving component, which includes an adjusting rod, a driving wheel set, a connecting wheel set, a linkage rod, and a positioning rod. The adjusting rod is inserted inside the driving wheel set, and the driving wheel set is rotatably connected inside the positioning housing. The connecting wheel set is fixedly installed on the side of the linkage rod, and the linkage rod is rotatably connected inside the positioning housing. The positioning rod is rotatably connected inside the positioning housing, and the top of the rod body of the linkage rod and the bottom of the rod body of the positioning rod are connected by bevel gear transmission.

[0006] Optionally, the shapes of the positioning housing and the linkage frame are both "U" shaped, and a "V" shaped positioning notch is provided in the middle of the housing of the positioning housing. A triangular positioning pressure block is provided on the side of the fixing block.

[0007] Optionally, a transverse guiding groove is provided inside the frame body of the linkage frame, and a guiding rod is provided on the side of the fixing block. The rod body of the guiding rod passes through the inside of the transverse guiding groove.

[0008] Optionally, a longitudinal guiding groove is provided inside the positioning housing, and the top groove body of the longitudinal guiding groove is inclined. The rod body of the guiding rod passing out of the transverse guiding groove is inserted inside the longitudinal guiding groove.

[0009] Optionally, track blocks are provided at both the top and bottom of the fixing block, and a track groove is provided inside the linkage frame. The track blocks are inserted inside the track groove.

[0010] Optionally, the driving wheel set is composed of a fast gear and a slow gear, and the slow gear is rotatably connected inside the fast gear. The connecting wheel set is composed of a mating gear a and a mating gear b, and the mating gear a is fixedly installed on the side of the mating gear b. The teeth of the fast gear and the mating gear a are engaged for transmission, and the teeth of the slow gear and the mating gear b are engaged for transmission.

[0011] Optionally, a synchronous gear is provided on the outer part of the rod body of the adjusting rod, and synchronous tooth grooves are provided inside both the fast gear and the slow gear. The synchronous gear is inserted inside the synchronous tooth grooves.

[0012] Optionally, a reset top spring is provided inside the rod body of the adjusting rod, and both ends of the reset top spring respectively abut against the inside of the positioning housing and the inside of the adjusting rod.

[0013] Optionally, a thread is provided on the outer part of the rod body of the positioning rod, and the positioning rod is screwed inside the bottom frame body of the linkage frame through the thread on the rod body.

[0014] Beneficial effects When in use, the positioning and fixing component of the device can perform four-point clamping and positioning of steel structure components, which is convenient to use. The steel structure components are evenly stressed and have extremely strong stability. Moreover, both the positioning housing and the linkage are in a "U" shape, allowing the middle part of the steel structure component to be placed into the interior of the positioning and fixing component through the top of the positioning and fixing component for positioning and fixing, facilitating subsequent welding and processing operations, with extremely strong adaptability. In addition, the dual-mode driving component of the device can regulate the rotation speed of the positioning rod, so that workers can quickly or finely adjust the clamping distance of the positioning and fixing component through the dual-mode driving component according to actual adjustment requirements, which is convenient and flexible to use.

[0015] In addition, the device fixes the steel structure component through the positioning and fixing component. When fixing the steel structure component, the bottom sides of the steel structure component are supported by the positioning notches, and at the same time, the positioning blocks of the two fixing blocks respectively fix the two sides of the top of the steel structure component, thus realizing the four-point clamping and fixing of the steel structure component. It is convenient, flexible and stable to use, and at the same time, the phenomenon of damage to the steel structure component caused by uneven clamping force during the clamping and fixing of the steel structure component will not occur. At the same time, the positioning housing and the linkage are designed in a "U" shape, and the fixing blocks are hidden inside the linkage in the reset state, thus facilitating the operation of inserting the middle part of the steel structure component into the interior of the positioning and fixing component to fix and position the steel structure component from the middle. It is convenient and flexible to use and has extremely strong adaptability.

[0016] In addition, the positioning rod can control the reset of the positioning and fixing component and the clamping and fixing state of the steel structure component. When the device is in the reset state, the guide rod is located at the top of the longitudinal guide groove, so that the fixing blocks are hidden inside the linkage at this time. When the positioning rod rotates, the positioning rod can drive the linkage to move up and down inside the positioning housing through the rod body thread. When the linkage moves downward, under the guiding action of the inclined groove body at the top of the longitudinal guide groove of the fixing block, the fixing block can extend outwards along the transverse guide groove when following the linkage downward, thus facilitating the subsequent clamping and fixing of the top of the steel structure component. When the linkage continues to move downward, the guide rod of the fixing block can move downward along the straight groove part at the bottom of the longitudinal guide groove, so as to maintain the use state of the fixing block extending out of the linkage, realizing the clamping and fixing of steel structure components with different outer diameters and shapes, facilitating subsequent welding operations, with extremely strong adaptability, stable use and convenient operation.

[0017] In addition, the dual-mode driving component has two driving modes for the positioning rod, namely, a fast driving mode and a slow driving mode. In the fast driving mode, the large gear drives the small gear to rotate. Thus, when in the fast driving mode, the adjusting rod can drive the positioning rod to rotate quickly within a unit number of rotation turns, so as to quickly adjust the clamping distance of the positioning and fixing component. In the slow driving mode, the small gear drives the large gear to rotate. Thus, when in the slow driving mode, the adjusting rod can drive the positioning rod to rotate slowly within a unit number of rotation turns, so as to precisely adjust the clamping distance of the positioning and fixing component. Workers can freely switch and use according to actual processing requirements, and the operation is convenient and flexible.

[0018] In addition, when the device is in the reset state, it is in the fast driving mode. At this time, under the action of the reset top spring, the synchronous gear of the adjusting rod is inserted into the interior of the fast gear. Thus, when the adjusting rod rotates at this time, it can only drive the fast gear to rotate. When the fast gear rotates, it can drive the mating gear a to rotate, realizing the way of the large gear driving the small gear. When the adjusting rod rotates a unit number of turns, when the mating gear a rotates, it can drive the linkage rod to rotate quickly. Thus, finally, the linkage rod drives the positioning rod to rotate, realizing the fast adjustment of the clamping distance of the positioning and fixing component. And in this mode, when the mating gear b rotates following the mating gear a, it can drive the slow gear to rotate idly, and the phenomenon that the slow gear and the mating gear b jam the device will not occur, and the use is stable.

[0019] In addition, when it is necessary to precisely adjust the clamping distance of the positioning and fixing component, just press the adjusting rod, and the device automatically enters the slow driving mode. At this time, when the adjusting rod rotates, it can only drive the slow gear to rotate. Since this mode adopts the transmission method of the small gear driving the large gear, when the adjusting rod rotates a unit number of turns, the slow gear can drive the positioning rod to rotate slowly through the mating gear b. At the same time, in this mode, when the mating gear a rotates following the mating gear b, it can drive the fast gear to rotate idly, and the device will not be jammed either. The switching is convenient and fast, and the use is flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0021] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0022] In the drawings: Figure 1 A schematic diagram showing the structure of the present invention is shown; Figure 2 A schematic diagram showing the internal structure of the present invention when in the fast driving mode is shown; Figure 3 A schematic diagram showing the structure of the dual-mode driving component of the present invention after disassembly is shown; Figure 4 Shows the structural schematic diagram of the positioning and fixing component of the present invention after disassembly; Figure 5 Shows the internal structural schematic diagram of the present invention in the slow drive mode; Figure 6 Shows the internal structural schematic diagram of the present invention when clamping and fixing a steel structure member with a larger outer diameter; Figure 7 Shows the internal structural schematic diagram of the present invention when clamping and fixing a steel structure member with a smaller outer diameter; Figure 8 Shows the present invention Figure 2 The enlarged structural schematic diagram of part A; Figure 9 Shows the present invention Figure 5 The enlarged structural schematic diagram of part B.

[0023] List of reference numerals 1. Positioning and fixing component; 101. Positioning housing; 1011. Positioning notch; 1012. Longitudinal guide groove; 102. Linkage frame; 1021. Transverse guide groove; 1022. Track groove; 103. Fixed block; 1031. Positioning pressure block; 1032. Guide rod; 1033. Track block; 2. Dual-mode drive component; 201. Adjusting rod; 2011. Synchronous gear; 2012. Reset top spring; 22. Drive wheel group; 221. Fast gear; 222. Slow gear; 2211. Synchronous tooth groove; 23. Connecting wheel group; 231. Matching gear a; 232. Matching gear b; 204. Linkage rod; 205. Positioning rod. Detailed implementation manners

[0024] In order to make the purpose, scheme and advantages of the technical scheme of the present invention clearer, the technical scheme of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.

[0025] Embodiment: Please refer to Figures 1 to 9 : The present invention provides a welding device for processing automotive steel structure products, comprising: a positioning and fixing assembly 1, the positioning and fixing assembly 1 includes a positioning housing 101, a linkage frame 102 and a fixing block 103, the linkage frame 102 is inserted inside the positioning housing 101, and the fixing block 103 is inserted inside the linkage frame 102; a dual-mode driving assembly 2, the dual-mode driving assembly 2 includes an adjusting rod 201, a driving wheel set 22, a connecting wheel set 23, a linkage rod 204 and a positioning rod 205, the adjusting rod 201 is inserted inside the driving wheel set 22, and the driving wheel set 22 is rotatably connected inside the positioning housing 101, the connecting wheel set 23 is fixedly installed on the side of the linkage rod 204, and the linkage rod 204 is rotatably connected inside the positioning housing 101, the positioning rod 205 is rotatably connected inside the positioning housing 101, and the rod body of the linkage rod 204 is in point contact with the bottom of the rod body of the positioning rod 205 and is connected by bevel gears.

[0026] In addition, according to an embodiment of the present invention, as Figure 4 shown, the shapes of the positioning housing 101 and the linkage frame 102 are both "U" shaped, and a "V" shaped positioning notch 1011 is provided in the middle of the housing of the positioning housing 101, and a triangular positioning press block 1031 is provided on the side of the fixing block 103. During use, when the device fixes the steel structure member, the bottom two sides of the steel structure member are supported by the positioning notch 1011, and at the same time, the two positioning press blocks 1031 of the two fixing blocks 103 respectively fix the two sides of the top of the steel structure member, so as to realize the four-point clamping and fixing of the steel structure member. It is convenient, flexible and stable to use, and at the same time, the phenomenon that the steel structure member is damaged due to uneven clamping force during the clamping and fixing of the steel structure member will not occur. At the same time, the positioning housing 101 and the linkage frame 102 are designed in a "U" shape, and the fixing block 103 is hidden inside the linkage frame 102 in the reset state, so as to facilitate the operation of inserting the middle part of the steel structure member into the positioning and fixing assembly 1 to fix and position the steel structure member from the middle. It is convenient, flexible and highly adaptable.

[0027] In addition, according to an embodiment of the present invention, as Figure 3 and Figure 4As shown in the figure, a transverse guiding groove 1021 is provided inside the frame body of the linkage frame 102, and a guiding rod 1032 is provided on the side surface of the fixing block 103. The rod body of the guiding rod 1032 passes through the inside of the groove body of the transverse guiding groove 1021. A longitudinal guiding groove 1012 is provided inside the positioning housing 101, and the top groove body of the longitudinal guiding groove 1012 is inclined. The rod body of the guiding rod 1032 passing out of the transverse guiding groove 1021 is inserted into the inside of the longitudinal guiding groove 1012. During use, the positioning rod 205 can control the reset of the positioning and fixing assembly 1 and the clamping and fixing state of the steel structure member. When the device is in the reset state, the guiding rod 1032 is located at the top of the longitudinal guiding groove 1012, so that the fixing block 103 is hidden inside the linkage frame 102 at this time. When the positioning rod 205 rotates, a thread is provided on the outer surface of the rod body of the positioning rod 205, and the positioning rod 205 is screwed into the inside of the bottom frame body of the linkage frame 102 through the thread on the rod body. The positioning rod 205 can drive the linkage frame 102 to move up and down inside the positioning housing 101 through the thread on the rod body. When the linkage frame 102 moves downward, under the guiding action of the inclined groove body at the top of the longitudinal guiding groove 1012, the fixing block 103 can extend outwards along the transverse guiding groove 1021 when following the linkage frame 102 downward movement, so as to facilitate the subsequent clamping and fixing of the top of the steel structure member. When the linkage frame 102 continues to move downward, the guiding rod 1032 of the fixing block 103 can move downward along the straight groove part at the bottom of the longitudinal guiding groove 1012, so as to maintain the use state of the fixing block 103 extending out of the linkage frame 102, realize the clamping and fixing of steel structure members with different outer diameters and shapes, facilitate the subsequent welding operation, have extremely strong adaptability, stable use and convenient operation.

[0028] In addition, according to an embodiment of the present invention, as Figure 4 shown, track blocks 1033 are provided at both the top and bottom of the fixing block 103, and track grooves 1022 are provided inside the linkage frame 102. The track blocks 1033 are inserted into the inside of the track grooves 1022. During use, the track grooves 1022 can limit the movement track of the fixing block 103 through the track blocks 1033, so that the fixing block 103 will not be skewed or distorted during movement, resulting in the phenomenon of the device being stuck and ineffective, and the use is stable.

[0029] In addition, according to an embodiment of the present invention, as Figure 3As shown in the figure, the driving wheel set 22 is composed of a fast gear 221 and a slow gear 222, and the slow gear 222 is rotatably connected inside the fast gear 221. The connecting wheel set 23 is composed of a mating gear a 231 and a mating gear b 232, and the mating gear a 231 is fixedly installed on the side of the mating gear b 232. The teeth of the fast gear 221 are engaged with the teeth of the mating gear a 231 for transmission, and the teeth of the slow gear 222 are engaged with the teeth of the mating gear b 232 for transmission. During use, the dual-mode driving assembly 2 has two driving modes for the positioning rod 205: fast driving and slow driving. In the fast driving mode, the large gear drives the small gear to rotate, so that the adjusting rod 201 can drive the positioning rod 205 to rotate quickly within a unit number of rotation turns to achieve the purpose of quickly adjusting the clamping distance of the positioning and fixing assembly 1. In the slow driving mode, the small gear drives the large gear to rotate, so that the adjusting rod 201 can drive the positioning rod 205 to rotate slowly within a unit number of rotation turns to achieve the purpose of precisely adjusting the clamping distance of the positioning and fixing assembly 1. Workers can freely switch and use according to actual processing requirements, and the operation is convenient and flexible.

[0030] In addition, according to an embodiment of the present invention, as Figure 3As shown, a synchronous gear 2011 is provided on the outer part of the rod body of the adjusting rod 201, and synchronous tooth grooves 2211 are provided inside both the fast gear 221 and the slow gear 222. The synchronous gear 2011 is inserted into the synchronous tooth groove 2211. During use, when the device is in the reset state, it is in the fast drive mode. A reset top spring 2012 is provided inside the rod body of the adjusting rod 201, and both ends of the reset top spring 2012 abut against the inside of the positioning housing 101 and the inside of the adjusting rod 201 respectively. At this time, under the action of the reset top spring 2012, the synchronous gear 2011 of the adjusting rod 201 is inserted into the fast gear 221. Thus, when the adjusting rod 201 rotates, it can only drive the fast gear 221 to rotate. When the fast gear 221 rotates, it can drive the mating gear a 231 to rotate, realizing the way of the large gear driving the small gear. When the adjusting rod 201 rotates one unit circle, when the mating gear a 231 rotates, it can drive the linkage rod 204 to rotate quickly. Thus, finally, the linkage rod 204 drives the positioning rod 205 to rotate, realizing the quick adjustment of the clamping distance of the positioning and fixing assembly 1. And in this mode, when the mating gear b 232 rotates following the mating gear a 231, it can drive the slow gear 222 to rotate idly, and there will be no phenomenon that the slow gear 222 and the mating gear b 232 jam the device. Similarly, when it is necessary to precisely adjust the clamping distance of the positioning and fixing assembly 1, just press the adjusting rod 201, and the device automatically enters the slow drive mode. At this time, when the adjusting rod 201 rotates, it can only drive the slow gear 222 to rotate. Since this mode adopts the transmission method of the small gear driving the large gear, when the adjusting rod 201 rotates one unit circle, the slow gear 222 can drive the positioning rod 205 to rotate slowly through the mating gear b 232. At the same time, in this mode, when the mating gear a 231 rotates following the mating gear b 232, it can drive the fast gear 221 to rotate idly and will not jam the device either. The switching is convenient and fast, and the use is flexible.

[0031] Specific usage method and function of this embodiment: In the present invention, the appropriate part of the steel structure member to be clamped is placed inside the positioning and fixing assembly 1. The positioning housing 101 and the linkage frame 102 are designed in a "U" shape. The fixing block 103 is hidden inside the linkage frame 102 in the reset state, which facilitates the middle part of the steel structure member to extend into the positioning and fixing assembly 1 for the operation of fixing and positioning the steel structure member from the middle. After that, the positioning and fixing assembly 1 is controlled by the dual-mode driving assembly 2 to clamp and fix the steel structure member. The dual-mode driving assembly 2 has two driving modes for the positioning rod 205: fast driving and slow driving. When the device is in the reset state, it is in the fast driving mode. At this time, under the action of the reset top spring 2012 of the adjusting rod 201, the synchronous gear 2011 of the adjusting rod 201 is inserted into the fast gear 221. Therefore, when the adjusting rod 201 rotates at this time, it can only drive the fast gear 221 to rotate. When the fast gear 221 rotates, it can drive the mating gear a231 to rotate, realizing the way of the large gear driving the small gear. When the adjusting rod 201 rotates one unit circle, when the mating gear a231 rotates, it can drive the linkage rod 204 to rotate quickly. Finally, the linkage rod 204 drives the positioning rod 205 to rotate to realize the rapid adjustment and use of the clamping distance of the positioning and fixing assembly 1. And in this mode, when the mating gear b232 rotates following the mating gear a231, it can drive the slow gear 222 to rotate idly, and there will be no phenomenon of the slow gear 222 and the mating gear b232 jamming the device. And when the adjusting rod 201 is pressed, the device automatically enters the slow driving mode. At this time, when the adjusting rod 201 rotates, it can only drive the slow gear 222 to rotate. Since this mode adopts the transmission method of the small gear driving the large gear, when the adjusting rod 201 rotates one unit circle, the slow gear 222 can drive the positioning rod 205 to rotate slowly through the mating gear b232. At the same time, in this mode, when the mating gear a231 rotates following the mating gear b232, it can drive the fast gear 221 to rotate idly and will not jam the device either. When the positioning rod 205 rotates, the positioning rod 205 can drive the linkage frame 102 to move up and down inside the positioning housing 101 through the rod body thread. When the linkage frame 102 moves downward, under the guiding action of the inclined groove at the top of the longitudinal guiding groove 1012, the fixing block 103 can extend outward along the transverse guiding groove 1021 when following the linkage frame 102 to move downward, which is convenient for subsequent clamping and fixing of the top of the steel structure member. When the linkage frame 102 continues to move downward, the guiding rod 1032 of the fixing block 103 can move downward along the straight groove at the bottom of the longitudinal guiding groove 1012, so as to maintain the use state of the fixing block 103 extending out of the linkage frame 102, realizing the clamping and fixing of steel structure members with different outer diameters and shapes. When the device fixes the steel structure member, it supports the two sides of the bottom of the steel structure member through the positioning notch 1011, and at the same time, the positioning pressing blocks 1031 of the two fixing blocks 103 respectively fix the two sides of the top of the steel structure member.Thus, the four-point clamping and fixing of steel structure components is realized, and subsequent welding operations can be carried out on the steel structure components after the fixing is completed.

[0032] Finally, it should be noted that when describing the positions of various components and their cooperation relationships, etc., usually one / a pair of components are taken as examples. However, those skilled in the art should understand that such positions, cooperation relationships, etc. also apply to other components / other pairs of components.

[0033] The above description is only an exemplary embodiment of the present invention and is not used to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A welding device for processing automobile steel structure products, characterized in that: include: A positioning and fixing component (1), the positioning and fixing component (1) comprising a positioning housing (101), a linkage frame (102) and a fixing block (103), the linkage frame (102) being plugged into the interior of the positioning housing (101), and the fixing block (103) being plugged into the interior of the linkage frame (102); a dual-mode driving component (2), the dual-mode driving component (2) comprising an adjusting rod (201), a driving wheel group (22), a connecting wheel group (23), a linkage rod (204) and a positioning rod (205), The adjusting rod (201) is inserted into the interior of the driving wheel set (22), and the driving wheel set (22) is rotatably connected to the interior of the positioning housing (101); the connecting wheel set (23) is fixedly mounted on the side of the linkage rod (204), and the linkage rod (204) is rotatably connected to the interior of the positioning housing (101); the positioning rod (205) is rotatably connected to the interior of the positioning housing (101), and a rod body point of the linkage rod (204) and a rod body bottom of the positioning rod (205) are connected via a bevel gear transmission.

2. A welding device for processing automobile steel structure products as claimed in claim 1, characterized in that: The positioning shell (101) and the linkage frame (102) are both "U"-shaped, and a "V"-shaped positioning notch (1011) is provided in the middle of the shell of the positioning shell (101), and a triangular positioning pressing block (1031) is provided on the side of the fixing block (103).

3. A welding device for processing automobile steel structure products as claimed in claim 1, characterized in that: A transverse guide groove (1021) is provided inside the frame body of the linkage frame (102), and a guide rod (1032) is provided on the side of the fixed block (103), and the rod body of the guide rod (1032) passes through the groove body of the transverse guide groove (1021).

4. A welding device for processing automobile steel structure products as claimed in claim 1, characterized in that: A longitudinal guide groove (1012) is provided inside the positioning housing (101), and the top groove body of the longitudinal guide groove (1012) is designed to be inclined. The guide rod (1032) passes through the rod body of the transverse guide groove (1021) and is inserted into the interior of the longitudinal guide groove (1012).

5. A welding device for processing automobile steel structure products as claimed in claim 1, characterized in that: Track blocks (1033) are provided at the top and bottom of the fixed block (103), and a track groove (1022) is provided inside the linkage frame (102), and the track block (1033) is plugged into the track groove (1022).

6. A welding device for processing automobile steel structure products as claimed in claim 1, characterized in that: The driving wheel set (22) is composed of a fast gear (221) and a slow gear (222), and the slow gear (222) is rotatably connected to the inside of the fast gear (221). The connecting wheel set (23) is composed of a matching gear a (231) and a matching gear b (232), and the matching gear a (231) is fixedly mounted on the side of the matching gear b (232). The gear teeth of the fast gear (221) and the matching gear a (231) are meshed for transmission, and the gear teeth of the slow gear (222) and the matching gear b (232) are meshed for transmission.

7. A welding device for processing automobile steel structure products as claimed in claim 1, characterized in that: The rod body of the adjusting rod (201) is provided with a synchronous gear (2011) on the outside, and the insides of the fast gear (221) and the slow gear (222) are both provided with a synchronous tooth groove (2211), and the synchronous gear (2011) is inserted into the inside of the synchronous tooth groove (2211).

8. A welding device for processing automobile steel structure products as claimed in claim 1, characterized in that: A return spring (2012) is provided inside the rod body of the adjusting rod (201), and two ends of the return spring (2012) respectively abut against the inside of the positioning housing (101) and the inside of the adjusting rod (201).

9. A welding device for processing automobile steel structure products as claimed in claim 1, characterized in that: The rod body of the positioning rod (205) is provided with threads on the outside, and the positioning rod (205) is screwed to the inside of the bottom frame body of the linkage frame (102) through the rod body threads.

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