Frame welding clamp

Abstract

The utility model discloses a frame welding clamp which comprises a base, at least two sets of clamping and positioning assemblies are arranged on the base, one set of clamping and positioning assemblies are used for clamping and positioning one frame, the positioning heights of the different clamping and positioning assemblies are arranged in an up-down staggered mode, and the positioning areas of the different clamping and positioning assemblies are partially overlapped in the transverse direction. One group of clamping and positioning components is used for clamping and positioning one frame, and at least two groups of clamping and positioning components are arranged on the base, so that at least two frames can be clamped at one time for welding, and the clamping and moving time of each frame is shortened; in addition, the multiple clamped frames are stacked up and down and are partially overlapped in the transverse direction, so that the multiple frames are closer, the moving distance of the welding device can be shortened, the welding efficiency is improved, and the occupied space of the frame welding clamp is reduced.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a frame welding fixture. Background Technology

[0002] Welding fixtures are often used to fix workpieces during welding. A current type of frame consists of four frame strips, and welding needs to be performed at the joints between these strips. Current welding fixtures can only clamp one frame at a time for welding. After each welding operation, the fixture needs to be moved away from the welding position, removed, and then replaced with the next frame to be welded, before being moved back to the welding position. The clamping and moving time for each frame is relatively long, resulting in low actual welding efficiency. Utility Model Content

[0003] The main purpose of this utility model is to propose a frame welding fixture, which aims to solve the technical problem that the welding fixtures in the prior art can only clamp one frame at a time, resulting in low welding efficiency.

[0004] To achieve the above objectives, this utility model proposes a frame welding fixture, including a base, on which at least two sets of clamping and positioning components are provided. One set of clamping and positioning components is used to clamp and position a frame. The positioning heights of different clamping and positioning components are staggered vertically, and the positioning areas of different clamping and positioning components overlap in the horizontal direction.

[0005] A set of clamping and positioning components is used to clamp and position a frame. By setting at least two sets of clamping and positioning components on the base, at least two frames can be clamped and welded at the same time, reducing the clamping and moving time of each frame. In addition, multiple clamped frames are stacked vertically and overlap in the horizontal part, making multiple frames closer together, which can shorten the moving distance of the welding device, improve welding efficiency, and reduce the space occupied by the frame welding fixture.

[0006] Preferably, the clamping and positioning assembly includes four corner positioning components, which are distributed on the left front side, left rear side, right front side, and right rear side of the base. The four corner positioning components are used to clamp the four corner portions of the positioning frame respectively. The corner positioning assembly includes a front and rear clamping mechanism and a left and right clamping mechanism. The front and rear clamping mechanism is used to clamp the positioning frame strip extending in the left and right direction in the front and rear direction, and the left and right clamping mechanism is used to clamp the positioning frame strip extending in the front and rear direction in the left and right direction.

[0007] The four corner positioning components clamp the four corners of the positioning frame respectively. The front and rear clamping mechanisms and the left and right clamping mechanisms of each corner positioning component clamp the two frame strips at the corner position respectively, thereby improving the positioning accuracy at the corner position of the frame.

[0008] Preferably, the base has two left and right slide blocks slidably connected to it, and the two left and right slide blocks are arranged with a left-right interval. The base is also provided with a left-right adjustment mechanism, and the two left and right slide blocks are connected to the left-right adjustment mechanism. The left-right adjustment mechanism can adjust the left-right relative distance between the two left and right slide blocks. The corner positioning components located on the left front side and the left rear side are both located on the left left slide block located on the left side, and the corner positioning components located on the right front side and the right rear side are both located on the right left and right slide blocks located on the right side.

[0009] The left and right adjustment mechanism can adjust the relative left and right distance between the two corner positioning components on the left and the two corner positioning components on the right to accommodate frames with different left and right widths, thus improving the versatility of the frame welding fixture.

[0010] Preferably, two front and rear slide blocks are slidably connected to the left and right slide blocks, and the two front and rear slide blocks are arranged at a distance from each other. The front and rear slide blocks are also provided with a front and rear adjustment mechanism. The two front and rear slide blocks are connected to the front and rear adjustment mechanism, and the front and rear adjustment mechanism can adjust the relative front and rear distance between the two front and rear slide blocks. The corner positioning components located on the left front side and the left rear side are respectively provided on the two front and rear slide blocks located on the left side, and the corner positioning components located on the right front side and the right rear side are respectively provided on the two front and rear slide blocks located on the right side.

[0011] The front and rear adjustment mechanism allows for adjustment of the relative front and rear spacing between the corner positioning components located at the front and rear, adapting to clamping frames with different front and rear widths and improving the versatility of the frame welding fixture.

[0012] Preferably, the left-right adjustment mechanism includes a left-right adjustment screw extending in the left-right direction, the left-right adjustment screw being rotatably connected to the base, the left-right adjustment screw including a first left-right screw section and a second left-right screw section, the first left-right screw section and the second left-right screw section having opposite thread directions, a first left-right nut connected to the first left-right screw section, a second left-right nut connected to the second left-right screw section, the first left-right nut and the second left-right nut being fixedly connected to two left-right slides respectively; the front-back adjustment mechanism includes a front-back adjustment screw extending in the front-back direction, the front-back adjustment screw being rotatably connected to the left-right slides, the front-back adjustment screw including a first front-back screw section and a second front-back screw section, the first front-back screw section and the second front-back screw section having opposite thread directions, a first front-back nut connected to the first front-back screw section, a second front-back nut connected to the second front-back screw section, the first front-back nut and the second front-back nut being fixedly connected to two corresponding front-back slides respectively.

[0013] Preferably, the clamping and positioning component further includes a support block, which is used to support and position the abutting position of the two frame strips, thereby improving the positioning accuracy of the splicing position between the two frame strips.

[0014] Preferably, the front and rear clamping mechanism includes front and rear fixed clamping blocks, front and rear movable clamping blocks, and a front and rear clamping drive unit. The front and rear fixed clamping blocks and the front and rear movable clamping blocks are arranged front and rear, and the front and rear movable clamping blocks are driven to the front and rear clamping drive unit. The front and rear clamping drive unit can drive the front and rear movable clamping blocks to move back and forth to clamp the frame strip closer to the front and rear fixed clamping blocks or to release the frame strip away from the front and rear fixed clamping blocks. The left and right clamping mechanism includes left and right fixed clamping blocks, left and right movable clamping blocks, and a left and right clamping drive unit. The left and right fixed clamping blocks and the left and right movable clamping blocks are arranged left and right, and the left and right movable clamping blocks are driven to the left and right clamping drive unit. The left and right clamping drive unit can drive the left and right movable clamping blocks to move left and right to clamp the frame strip closer to the left and right fixed clamping blocks or to release the frame strip away from the left and right fixed clamping blocks.

[0015] Preferably, the frame welding fixture further includes front and rear push blocks. The front and rear movable clamping blocks of the corner positioning components at the corresponding corner positions in different clamping and positioning components are all disposed on the front and rear push blocks. The front and rear clamping mechanisms of the corner positioning components at the corresponding corner positions in different clamping and positioning components share a single front and rear clamping drive unit, and the front and rear clamping drive unit is induced to be connected to the front and rear push blocks. The frame welding fixture further includes left and right push blocks. The left and right movable clamping blocks of the corner positioning components at the corresponding corner positions in different clamping and positioning components are all disposed on the left and right push blocks. The left and right clamping mechanisms of the corner positioning components at the corresponding corner positions in different clamping and positioning components share a single left and right clamping drive unit, and the left and right clamping drive unit is induced to be connected to the left and right push blocks.

[0016] In multiple clamping and positioning components, multiple front and rear clamping mechanisms corresponding to corner positions share a single front and rear clamping drive unit, and multiple left and right clamping mechanisms corresponding to corner positions share a single left and right clamping drive unit. After multiple frames are placed, the front and rear clamping drive unit and the left and right clamping drive unit can clamp multiple frames in one operation, which can reduce the number of drive units and simplify the structure of the frame welding fixture.

[0017] Preferably, the front and rear fixing blocks are provided with a front-to-back position adjustment structure, and the relative distance between different front and rear fixing blocks is adjusted by the front-to-back position adjustment structure; the left and right fixing blocks are provided with a left-to-right position adjustment structure, and the relative distance between different left and right fixing blocks is adjusted by the left-to-right position adjustment structure.

[0018] Different front and rear fixed clamping blocks can adjust their relative distance through a front and rear position adjustment structure, which can be adjusted to accommodate the different distances of the front and rear movable clamping blocks on the front and rear push blocks; different left and right fixed clamping blocks can adjust their relative distance through a left and right position adjustment structure, which can be adjusted to accommodate the different distances of the left and right movable clamping blocks on the left and right push blocks, thereby improving the clamping accuracy of the frame. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the frame welding fixture of this utility model;

[0021] Figure 2 This is a schematic diagram of the frame welding fixture of this utility model when clamping two frames;

[0022] Figure 3 for Figure 1 A schematic diagram of the corner positioning component at point A from another angle;

[0023] Figure 4 for Figure 3 A schematic diagram of the structure when the center corner positioning component clamps the two frame edges.

[0024] In the attached diagram: 1-base, 2-corner positioning assembly, 21-front and rear clamping mechanism, 211-front and rear fixed clamping blocks, 212-front and rear movable clamping blocks, 213-front and rear clamping drive unit, 214-front and rear position adjustment structure, 22-left and right clamping mechanism, 221-left and right fixed clamping blocks, 222-left and right movable clamping blocks, 223-left and right clamping drive unit, 224-left and right position adjustment structure, 23-front and rear push blocks, 24-left and right push blocks, 3-left and right slide blocks, 31-left and right adjusting screws, 311-first left and right screw segments, 312-second left and right screw segments, 4-front and rear slide blocks, 41-front and rear adjusting screws, 411-first front and rear screw segments, 412-second front and rear screw segments, 5-support block, 8-frame, 81-frame strip.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators, such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] like Figures 1 to 4 As shown, a frame welding fixture includes a base 1, on which at least two sets of clamping and positioning components are provided. One set of clamping and positioning components is used to clamp and position a frame 8. The positioning heights of different clamping and positioning components are staggered vertically, and the positioning areas of different clamping and positioning components overlap in the horizontal part.

[0030] A set of clamping and positioning components is used to clamp and position a frame 8. The positioning area of ​​the clamping and positioning components is the area enclosed by the frame 8. By setting at least two sets of clamping and positioning components on the base 1, the number of clamping and positioning components can be two, three or more. This allows at least two frame 8s to be clamped and welded at the same time, reducing the clamping and moving time of each frame 8. In addition, multiple clamped frame 8s are stacked vertically and overlap horizontally. Each frame 8 only needs to expose the position to be welded horizontally. The hollow positions inside the frame can overlap, as shown in the reference. Figure 2 and Figure 4 This brings multiple frames closer together, shortening the moving distance of the welding device, improving welding efficiency, and reducing the space occupied by the frame welding fixture.

[0031] In some specific embodiments, the clamping and positioning assembly includes four corner positioning assemblies 2, which are distributed on the left front side, left rear side, right front side and right rear side of the base 1. The four corner positioning assemblies 2 are used to clamp the four corner portions of the positioning frame 8 respectively. The corner positioning assembly 2 includes a front and rear clamping mechanism 21 and a left and right clamping mechanism 22. The front and rear clamping mechanism 21 is used to clamp and position the frame strip 81 extending in the left and right direction in the front and rear direction. The left and right clamping mechanism 22 is used to clamp and position the frame strip 81 extending in the front and rear direction in the left and right direction.

[0032] The four corner positioning components 2 respectively clamp the four corner positions of the positioning frame 8. The corner should be understood as including the corner and a length near the corner. The purpose is to fix the position near the corner. The front and rear clamping mechanisms 21 and the left and right clamping mechanisms 22 of each corner positioning component 2 respectively clamp the two frame strips 81 at the positioning corner position, thereby improving the positioning accuracy at the corner position of the frame 8.

[0033] In some specific embodiments, two left and right slide blocks 3 are slidably connected on the base 1. The two left and right slide blocks 3 are arranged with a left and right interval. The base 1 is also provided with a left and right adjustment mechanism. The two left and right slide blocks 3 are connected to the left and right adjustment mechanism. The left and right adjustment mechanism can adjust the left and right relative distance between the two left and right slide blocks 3. The corner positioning components 2 located on the left front side and the left rear side are both located on the left left slide block 3 located on the left side. The corner positioning components 2 located on the right front side and the right rear side are both located on the right left and right slide blocks 3 located on the right side.

[0034] The left and right adjustment mechanism can adjust the relative left and right distance between the two corner positioning components 2 on the left and the two corner positioning components 2 on the right to accommodate frame 8 with different left and right widths, thereby improving the versatility of the frame welding fixture.

[0035] In some specific embodiments, two front and rear slide blocks 4 are slidably connected to the left and right slide blocks 3. The two front and rear slide blocks 4 are arranged at a distance from each other. The front and rear slide blocks 4 are also provided with a front and rear adjustment mechanism. The two front and rear slide blocks 4 are connected to the front and rear adjustment mechanism, which can adjust the relative front and rear distance between the two front and rear slide blocks 4. The corner positioning components 2 located on the left front and left rear sides are respectively provided on the two front and rear slide blocks 4 located on the left side, and the corner positioning components 2 located on the right front and right rear sides are respectively provided on the two front and rear slide blocks 4 located on the right side.

[0036] The front and rear adjustment mechanism can adjust the relative front and rear distance between the corner positioning component 2 located on the front side and the corner positioning component 2 located on the rear side to accommodate frame 8 with different front and rear widths, thereby improving the versatility of the frame welding fixture.

[0037] Furthermore, the left-right adjustment mechanism includes a left-right adjustment screw 31 extending in the left-right direction. The left-right adjustment screw 31 is rotatably connected to the base 1. The left-right adjustment screw 31 includes a first left-right screw section 311 and a second left-right screw section 312. The threads of the first left-right screw section 311 and the second left-right screw section 312 are opposite in direction. A first left-right nut is connected to the first left-right screw section 311, and a second left-right nut is connected to the second left-right screw section 312. The first left-right nut and the second left-right nut are respectively fixedly connected to two left-right sliding blocks 3. When the left-right adjustment screw 31 is rotated, because the threads of the first left-right screw section 311 and the second left-right screw section 312 are opposite in direction, the two left-right sliding blocks 3 will move simultaneously, moving closer to each other or further away from each other. The adjustment is relatively simple, and the blocks are clamped after adjustment.

[0038] The front-to-back adjustment mechanism includes a front-to-back adjustment screw 41 extending in the front-to-back direction. The front-to-back adjustment screw 41 is rotatably connected to the left and right slide blocks 3. The front-to-back adjustment screw 41 includes a first front-to-back screw section 411 and a second front-to-back screw section 412. The threads of the first front-to-back screw section 411 and the second front-to-back screw section 412 are opposite in direction. A first front-to-back nut is connected to the first front-to-back screw section 411, and a second front-to-back nut is connected to the second front-to-back screw section 412. The first front-to-back nut and the second front-to-back nut are respectively fixedly connected to the corresponding two front and back slide blocks 4. When the front-to-back adjustment screw 41 is rotated, because the threads of the first front-to-back screw section 411 and the second front-to-back screw section 412 are opposite in direction, the two front and back slide blocks 4 will move simultaneously, moving closer to each other or further away from each other, making adjustment relatively simple. After adjustment, locking structures such as screws can be used to lock the left and right adjustment screws 31 and the front-to-back adjustment screw 41 to prevent rotational displacement. In other embodiments, the left-to-right adjustment mechanism and the front-to-back adjustment mechanism can also use adjustment mechanisms such as screws and long slots.

[0039] In some specific embodiments, reference is made to Figure 3 and Figure 4 The clamping and positioning component also includes a support block 5, which is used to support and position the abutting position of the two frame strips 81, improving the positioning accuracy of the splicing position between the two frame strips 81. The frame 8 can be spliced ​​in various ways. It can be spliced ​​from four separate frame strips 81, with four support blocks 5 supporting the splicing position between the four frame strips 81; or it can be spliced ​​from a long strip folded into three connected frame strips 81 plus a single frame strip 81, with two support blocks 5 positioned between this single frame strip 81 and the two frame strips 81 at both ends.

[0040] In some specific embodiments, reference is made to Figure 3 and Figure 4The front and rear clamping mechanism 21 includes front and rear fixed clamping blocks 211, front and rear movable clamping blocks 212, and a front and rear clamping drive unit 213. The front and rear fixed clamping blocks 211 and the front and rear movable clamping blocks 212 are arranged in a front-rear arrangement. The front and rear movable clamping blocks 212 are connected to the front and rear clamping drive unit 213. The front and rear clamping drive unit 213 can drive the front and rear movable clamping blocks 212 to move back and forth to clamp the frame strip 81 closer to the front and rear fixed clamping blocks 211 or to release the frame strip 81 away from the front and rear fixed clamping blocks 211. Preferably, the front and rear fixed clamping blocks 211 or the front and rear movable clamping blocks 212 are provided with positioning grooves, which can limit the position of the frame strip after clamping it.

[0041] The left and right clamping mechanism 22 includes left and right fixed clamping blocks 221, left and right movable clamping blocks 222, and left and right clamping drive units 223. The left and right fixed clamping blocks 221 and the left and right movable clamping blocks 222 are arranged left and right. The left and right movable clamping blocks 222 are connected to the left and right clamping drive units 223. The left and right clamping drive units 223 can drive the left and right movable clamping blocks 222 to move left and right to clamp the frame strip 81 closer to the left and right fixed clamping blocks 221 or to release the frame strip 81 away from the left and right fixed clamping blocks 221. Preferably, the left and right fixed clamping blocks 221 or the left and right movable clamping blocks 222 are provided with positioning grooves, which can limit the position of the frame strip after clamping it.

[0042] Specifically, the front and rear fixed clamping blocks 211 and the left and right fixed clamping blocks 221 are fixed on the corresponding front and rear slide blocks 4. The front and rear movable clamping blocks 212 are slidably connected to the corresponding front and rear slide blocks 4 in the front-rear direction, and the left and right movable clamping blocks 222 are slidably connected to the corresponding front and rear slide blocks 4 in the left-right direction. The front and rear clamping drive unit 213 and the left and right clamping drive unit 223 can be cylinders or the like.

[0043] Furthermore, the frame welding fixture also includes front and rear push blocks 23. The front and rear movable clamping blocks 212 in the corner positioning components 2 corresponding to the corner positions in different clamping and positioning components are all mounted on the front and rear push blocks 23. The front and rear clamping mechanisms 21 in the corner positioning components 2 corresponding to the corner positions in different clamping and positioning components share a front and rear clamping drive unit 213. The front and rear clamping drive unit 213 is connected to the front and rear push blocks 23 in a transmission connection.

[0044] The frame welding fixture also includes left and right push blocks 24. The left and right movable clamping blocks 222 in the corner positioning components 2 corresponding to the corner positions in different clamping and positioning components are all set on the left and right push blocks 24. The left and right clamping mechanisms 22 in the corner positioning components 2 corresponding to the corner positions in different clamping and positioning components share a left and right clamping drive unit 223. The left and right clamping drive unit 223 is connected to the left and right push blocks 24 in a transmission connection.

[0045] In the multiple clamping and positioning components, the multiple front and rear clamping mechanisms 21 corresponding to the corner positions share a single front and rear clamping drive unit 213, and the multiple left and right clamping mechanisms 22 corresponding to the corner positions share a single left and right clamping drive unit 223. After multiple frame pieces 8 are placed, the front and rear clamping drive unit 213 drives the front and rear push blocks 23 to move, and the left and right clamping drive unit 223 drives the left and right push blocks 24 to move. The front and rear clamping drive unit 213 and the left and right clamping drive unit 223 can clamp multiple frame pieces 8 in one operation, which can reduce the number of drive units and simplify the structure of the frame welding fixture.

[0046] Furthermore, the front and rear fixed clamps 211 are provided with a front and rear position adjustment structure 214, and the front and rear relative distance between different front and rear fixed clamps 211 is adjusted by the front and rear position adjustment structure 214; the left and right fixed clamps 221 are provided with a left and right position adjustment structure 224, and the left and right relative distance between different left and right fixed clamps 221 is adjusted by the left and right position adjustment structure 224.

[0047] Different front and rear fixed clamping blocks 211 can have their relative front-to-back spacing adjusted via the front-to-back position adjustment structure 214, adapting to the distances of different front and rear movable clamping blocks 212 on the front and rear push blocks 23. Similarly, different left and right fixed clamping blocks 221 can have their relative left and right spacing adjusted via the left-to-right position adjustment structure 224, adapting to the distances of different left and right movable clamping blocks 222 on the left and right push blocks 24, ensuring the frame strip 81 can be clamped and improving the clamping accuracy of the frame 8. The front-to-back position adjustment structure 214 and the left-to-right position adjustment structure 224 can employ adjustment structures such as screws and long slots.

[0048] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A frame welding fixture, characterized in that, Includes a base (1), on which at least two sets of clamping and positioning components are provided. One set of clamping and positioning components is used to clamp and position a frame (8). The positioning heights of different clamping and positioning components are staggered vertically, and the positioning areas of different clamping and positioning components overlap in the horizontal part.

2. The frame welding fixture as described in claim 1, characterized in that, The clamping and positioning assembly includes four corner positioning assemblies (2), which are distributed on the left front side, left rear side, right front side and right rear side of the base (1). The four corner positioning assemblies (2) are used to clamp the four corners of the positioning frame (8) respectively. The corner positioning component (2) includes a front and rear clamping mechanism (21) and a left and right clamping mechanism (22). The front and rear clamping mechanism (21) is used to clamp and position the frame strip (81) extending in the left and right directions in the front and rear directions, and the left and right clamping mechanism (22) is used to clamp and position the frame strip (81) extending in the front and rear directions in the left and right directions.

3. The frame welding fixture as described in claim 2, characterized in that, Two left and right slide blocks (3) are slidably connected on the base (1). The two left and right slide blocks (3) are arranged with a left and right interval. The base (1) is also provided with a left and right adjustment mechanism. The two left and right slide blocks (3) are connected to the left and right adjustment mechanism. The left and right adjustment mechanism can adjust the left and right relative distance between the two left and right slide blocks (3). The corner positioning components (2) located on the left front side and the left rear side are both located on the left and right slides (3) located on the left side, and the corner positioning components (2) located on the right front side and the right rear side are both located on the left and right slides (3) located on the right side.

4. The frame welding fixture as described in claim 3, characterized in that, Two front and rear slides (4) are slidably connected to the left and right slides (3). The two front and rear slides (4) are arranged at a distance from each other. The front and rear slides (4) are also provided with a front and rear adjustment mechanism. The two front and rear slides (4) are connected to the front and rear adjustment mechanism. The front and rear adjustment mechanism can adjust the relative front and rear distance between the two front and rear slides (4). The corner positioning components (2) located on the left front side and the left rear side are respectively disposed on the two front and rear slides (4) located on the left side, and the corner positioning components (2) located on the right front side and the right rear side are respectively disposed on the two front and rear slides (4) located on the right side.

5. The frame welding fixture as described in claim 4, characterized in that, The left and right adjustment mechanism includes a left and right adjustment screw (31) extending in the left and right direction. The left and right adjustment screw (31) is rotatably connected to the base (1). The left and right adjustment screw (31) includes a first left and right screw section (311) and a second left and right screw section (312). The thread directions of the first left and right screw section (311) and the second left and right screw section (312) are opposite. A first left and right nut is connected to the first left and right screw section (311), and a second left and right nut is connected to the second left and right screw section (312). The first left and right nut and the second left and right nut are respectively fixedly connected to the two left and right slides (3). The front-to-back adjustment mechanism includes a front-to-back adjustment screw (41) extending in the front-to-back direction. The front-to-back adjustment screw (41) is rotatably connected to the left and right slides (3). The front-to-back adjustment screw (41) includes a first front-to-back screw section (411) and a second front-to-back screw section (412). The thread directions of the first front-to-back screw section (411) and the second front-to-back screw section (412) are opposite. A first front-to-back nut is connected to the first front-to-back screw section (411), and a second front-to-back nut is connected to the second front-to-back screw section (412). The first front-to-back nut and the second front-to-back nut are respectively fixedly connected to the corresponding two front and back slides (4).

6. The frame welding fixture as described in claim 2, characterized in that, The clamping and positioning assembly also includes a support block (5), which is used to support and position the two frame bars (81) at their contact positions.

7. The frame welding fixture as described in claim 2, characterized in that, The front and rear clamping mechanism (21) includes front and rear fixed clamping blocks (211), front and rear movable clamping blocks (212), and front and rear clamping drive unit (213). The front and rear fixed clamping blocks (211) and the front and rear movable clamping blocks (212) are arranged in front and behind each other. The front and rear movable clamping blocks (212) are connected to the front and rear clamping drive unit (213) in a transmission manner. The front and rear clamping drive unit (213) can drive the front and rear movable clamping blocks (212) to move back and forth to clamp the frame strip (81) closer to the front and rear fixed clamping blocks (211) or to release the frame strip (81) away from the front and rear fixed clamping blocks (211). The left and right clamping mechanism (22) includes left and right fixed clamping blocks (221), left and right movable clamping blocks (222), and left and right clamping drive units (223). The left and right fixed clamping blocks (221) and the left and right movable clamping blocks (222) are arranged left and right. The left and right movable clamping blocks (222) are connected to the left and right clamping drive units (223) in a transmission manner. The left and right clamping drive units (223) can drive the left and right movable clamping blocks (222) to move left and right to clamp the frame strip (81) closer to the left and right fixed clamping blocks (221) or to release the frame strip (81) away from the left and right fixed clamping blocks (221).

8. The frame welding fixture as described in claim 7, characterized in that, The frame welding fixture also includes front and rear push blocks (23). The front and rear movable clamping blocks (212) in the corner positioning components (2) corresponding to the corner positions in different clamping and positioning components are all disposed on the front and rear push blocks (23). The front and rear clamping mechanisms (21) in the corner positioning components (2) corresponding to the corner positions in different clamping and positioning components share a front and rear clamping drive unit (213). The front and rear clamping drive unit (213) is connected to the front and rear push blocks (23) in a transmission connection. The frame welding fixture also includes left and right push blocks (24). The left and right movable clamping blocks (222) in the corner positioning components (2) at the corner positions of different clamping and positioning components are all disposed on the left and right push blocks (24). The left and right clamping mechanisms (22) in the corner positioning components (2) at the corner positions of different clamping and positioning components share a left and right clamping drive unit (223). The left and right clamping drive unit (223) is connected to the left and right push blocks (24) in a transmission connection.

9. The frame welding fixture as described in claim 8, characterized in that, The front and rear fixed clamps (211) are provided with a front and rear position adjustment structure (214), and the front and rear relative distance between different front and rear fixed clamps (211) can be adjusted by the front and rear position adjustment structure (214); The left and right fixed clamps (221) are provided with a left and right position adjustment structure (224), and the left and right relative distance between different left and right fixed clamps (221) can be adjusted by the left and right position adjustment structure (224).

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