Positioning and clamping device suitable for welding carrier roller support

Abstract

The utility model provides a positioning and clamping device suitable for welding a carrier roller support. The carrier roller support comprises a supporting frame, and a side supporting column and a middle supporting column are symmetrically arranged on the supporting frame along the central axis of the supporting frame; comprising a positioning bottom plate, and a supporting frame is detachably connected to the positioning bottom plate; the first driving assembly is arranged on the positioning bottom plate, a plurality of second driving assemblies are sequentially arranged on the first driving assembly in the first direction, and the second driving assemblies are connected with the first clamping assembly and the second clamping assembly correspondingly; the first clamping assembly is used for clamping the side supporting column, and the second clamping assembly is used for clamping the middle supporting column. The first driving assembly is used for driving the first clamping assembly and the second clamping assembly to move in the first direction. The second driving assembly is used for driving the first clamping assembly and the second clamping assembly to move in the second direction; the device can be suitable for carrier roller positions of carrier roller supports of various specifications, the universality is high, and the manufacturing cost is reduced; meanwhile, the clamping assemblies are adopted for clamping and fixing the carrier rollers, the flexibility is high, and the carrier rollers are convenient to assemble and disassemble.

Description

Technical Field

[0001] The present application generally relates to the technical field of welding positioning and clamping, and in particular to a positioning and clamping device suitable for welding roller supports. Background Art

[0002] The trough roller bracket is used to support and fix the roller. The trough roller bracket consists of a support frame and multiple pillars. The multiple pillars are welded to the support frame in sequence. However, during the welding process, since the positions of the pillars on multiple trough roller brackets may be different, different positioning and clamping devices are required during welding to ensure that the position of each pillar is accurate and stable.

[0003] However, in the prior art, different trough-shaped roller supports are individually designed with specific positioning clamping devices to locate the position of the pillar. The positioning clamping devices are not very universal and have high manufacturing costs. At the same time, the positioning clamping devices in the prior art usually use bolts to fix the pillars, resulting in poor flexibility in welding operations and inconvenient loading and unloading of the pillars. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a positioning and clamping device suitable for welding roller brackets that can solve the above-mentioned technical problems.

[0005] The present application provides a positioning and clamping device for welding roller supports, the roller supports comprising a support frame, the support frame being symmetrically provided with side supports and middle supports along its central axis, the side supports being located at both ends of the support frame along a first direction perpendicular to the central axis of the support frame; and comprising:

[0006] A positioning base plate, to which the support frame is detachably connected;

[0007] The driving structure includes a first driving component and a second driving component, the first driving component is arranged on the positioning base plate, and multiple second driving components are sequentially arranged on the first driving component along the first direction, and the second driving component is respectively connected to the first clamping component and the second clamping component; the first clamping component is located at both ends of the first driving component along the first direction, the first clamping component is used to clamp the side pillar, and the second clamping component is used to clamp the middle pillar; the first driving component is used to drive the first clamping component and the second clamping component to move along the first direction; the second driving component is used to drive the first clamping component and the second clamping component to move along the second direction; the second direction is parallel to the central axis of the support frame.

[0008] According to the technical solution provided in the present application, the first driving assembly includes: a first supporting block and a first connecting block, the first supporting block is arranged on the positioning base plate, and the first supporting block is extended along the first direction; the top of the first supporting block is provided with a first sliding groove extending along the first direction; the first connecting block is provided on the top of the first supporting block, and the bottom of the first connecting block is provided with a first sliding block, and the first sliding block is slidably connected to the first sliding groove; the first connecting block is fixedly connected to the second driving assembly.

[0009] According to the technical solution provided in the present application, the second driving component includes: a second support block and a second slider, the second support block is fixedly connected to the first connecting block, and the second support block is extended along the second direction; the second support block is provided with a second slide groove extending along the second direction on one side along the first direction; the second slider is slidably connected to the second slide groove; the first clamping component or the second clamping component is fixedly connected to the second slider.

[0010] According to the technical solution provided in the present application, the first clamping assembly includes: a first side plate and a first clamping structure, the first side plate is arranged on one side of the side pillar, and the first clamping structure is arranged on the side of the first side plate close to the side pillar; the first clamping structure has a first state and a second state, when in the first state, the clamping part of the first clamping structure cooperates with the first side plate to clamp the side pillar; when in the second state, the clamping part of the first clamping structure moves away from the first side plate to release the side pillar.

[0011] According to the technical solution provided in the present application, the first clamping structure includes: a first clamping wrench, the middle part of the first clamping wrench is rotatably connected to the first side plate; the driving part of the first clamping wrench is rotatably connected to the first rotating plate on one side close to the first side plate, and the other end of the first rotating plate is rotatably connected to the first side plate; the clamping part of the first clamping wrench is fixedly connected to a first threaded rod; a first washer is provided at one end of the first threaded rod close to the side pillar; when the first clamping wrench is in the first state, the first washer abuts against the side pillar.

[0012] According to the technical solution provided in the present application, the second clamping assembly includes: a second side plate and a second clamping structure, the middle pillar is sleeved on the second side plate, and the second side plate is provided with the second clamping structure on one side along the first direction; the second clamping structure has a third state and a fourth state, when in the third state, the clamping part of the second clamping structure cooperates with the second side plate to clamp the middle pillar; when in the fourth state, the clamping part of the second clamping structure moves away from the second side plate to release the middle pillar.

[0013] According to the technical solution provided in the present application, the second clamping structure includes: a second clamping wrench, the middle part of the second clamping wrench is rotatably connected to the second side plate; the driving part of the second clamping wrench is rotatably connected to the second rotating plate on one side close to the second side plate, and the other end of the second rotating plate is rotatably connected to the second side plate; the clamping part of the second clamping wrench is fixedly connected to a second threaded rod; a second washer is provided at one end of the second threaded rod close to the middle pillar; when the second clamping wrench is in the third state, the second washer abuts against the middle pillar.

[0014] The beneficial effects of this application are:

[0015] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The through-hole, the bosses comprise a through-hole, a screw bolt, and a nut. The through-hole, the bosses comprise a through-hole, a screw bolt, and a nut.

[0016] When welding the side pillars and the middle pillars on the support frame, the positions of the side pillars and the middle pillars on the support frame are determined, and then the first driving component is started to drive the first clamping component to move along the first direction to the welding position of the corresponding side pillar, and the second driving component is started to drive the first clamping component to move along the second direction so that the first clamping component is located in the middle of the side pillar. At this time, the first clamping component clamps the corresponding side pillar; then the first driving component is started to drive the second clamping component to move along the first direction to the welding position of the corresponding middle pillar, and the second driving component is started to drive the second clamping component to move along the second direction so that the second clamping component adapts to the height of the middle pillar. At this time, the second clamping component clamps the corresponding middle pillar; finally, the side pillars and the middle pillars are welded to the support frame to complete the roller bracket; it can be seen that through the above structure, the positioning and clamping device provided by the present application can be applied to the roller positions of roller brackets of various specifications, has high versatility, and reduces production costs; at the same time, the present application adopts a clamping component to clamp and fix the roller, which has high flexibility and is easy to load and unload the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 This is a schematic diagram of a positioning and clamping device suitable for welding roller supports provided in Example 1 of the present application;

[0019] Figure 2 This is a front view of a positioning and clamping device suitable for welding roller supports provided in Example 1 of the present application;

[0020] Figure 3 yes Figure 1 A magnified view of the structure at point A;

[0021] Figure 4 yes Figure 1 A magnified view of the structure at point B.

[0022] Example 1 of the present application provides a schematic diagram of the connection between a guardrail of a positioning and clamping device suitable for welding roller brackets and a second connecting component.

[0023] In the figure: 1. support frame; 2. side support; 3. middle support; 4. positioning base plate; 5. first support block; 6. first connecting block; 7. second support block; 8. first side plate; 9. first clamping wrench; 10. first rotating plate; 11. first threaded rod; 12. first washer; 13. second side plate; 14. second clamping wrench; 15. second rotating plate; 16. second threaded rod; 17. second washer. DETAILED DESCRIPTION

[0024] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] Example 1

[0027] Please refer to Figure 1-Figure 4 The present application provides a positioning and clamping device for welding roller supports, the roller support including a support frame 1, on which side supports 2 and a middle support 3 are symmetrically arranged along the central axis thereof, the side supports 2 being located at both ends of the support frame 1 along a first direction perpendicular to the central axis of the support frame 1; and comprising:

[0028] A positioning base plate 4, to which a support frame 1 is detachably connected;

[0029] The driving structure includes a first driving component and a second driving component. The first driving component is arranged on the positioning base plate 4. A plurality of second driving components are arranged in sequence on the first driving component along the first direction. The second driving component is respectively connected to the first clamping component and the second clamping component; the first clamping component is located at both ends of the first driving component along the first direction, the first clamping component is used to clamp the side pillar 2, and the second clamping component is used to clamp the middle pillar 3; the first driving component is used to drive the first clamping component and the second clamping component to move along the first direction; the second driving component is used to drive the first clamping component and the second clamping component to move along the second direction; the second direction is parallel to the central axis of the support frame 1.

[0030] Specifically, such as Figure 1-Figure 2 The roller support includes a support frame 1, on which side supports 2 and middle supports 3 are symmetrically arranged along the central axis thereof. The side supports 2 are located at both ends of the support frame 1 along the first direction, and the two middle supports 3 are respectively located on the sides relatively close to the two side supports 2. The roller support is used to support and fix the roller. Therefore, in this embodiment, the two middle supports 3 are correspondingly provided with two second clamping assemblies, and the two side supports 2 are correspondingly provided with two first clamping assemblies.

[0031] In this embodiment, the first direction is the horizontal direction, and the second direction is the vertical direction;

[0032] In this embodiment, a plurality of positioning holes are provided on the positioning base plate 4, and the support frame 1 is detachably connected to the positioning holes by bolts; when welding is completed, it is convenient to remove the formed roller bracket from the positioning base plate 4;

[0033] Working principle: When welding the side pillars 2 and the middle pillars 3 to the support frame 1, determine the positions of the side pillars 2 and the middle pillars 3 on the support frame 1, and then start the first driving component to drive the first clamping component to move along the first direction to the welding position of the corresponding side pillar 2, and start the second driving component to drive the first clamping component to move along the second direction so that the first clamping component is located in the middle of the side pillar 2, at this time the first clamping component clamps the corresponding side pillar 2; then start the first driving component to drive the second clamping component to move along the first direction to the welding position of the corresponding middle pillar 3, and start the second driving component to drive the second clamping component to move along the second direction so that the second clamping component adapts to the height of the middle pillar 3, at this time the second clamping component clamps the corresponding middle pillar 3; finally, weld the side pillars 2 and the middle pillar 3 to the support frame 1 to complete the roller bracket; it can be seen that through the above structure, the positioning and clamping device provided by the present application can be applied to the roller positions of roller brackets of various specifications, has high versatility, and reduces production costs; at the same time, the present application adopts a clamping component to clamp and fix the roller, which has high flexibility and is easy to load and unload the roller.

[0034] In some embodiments, the first drive assembly includes: a first support block 5 and a first connecting block 6, the first support block 5 is arranged on the positioning base plate 4, and the first support block 5 is extended along the first direction; the top of the first support block 5 is provided with a first slide groove extending along the first direction; the first connecting block 6 is provided at the top of the first support block 5, and the bottom of the first connecting block 6 is provided with a first slider, and the first slider is slidably connected to the first slide groove; the first connecting block 6 is fixedly connected to the second drive assembly.

[0035] Specifically, the first drive assembly includes: a first support block 5 and a first connecting block 6; in this embodiment, the present application is provided with four second drive assemblies corresponding to the side pillars 2 and the middle pillars 3, and each second drive assembly is provided with two first connecting blocks 6. The two first connecting blocks 6 are arranged on both sides of the second drive assembly along the first direction to clamp the second drive assembly, thereby improving the stability of the second drive assembly;

[0036] Specifically, a first chute extending along the first direction is provided on the top of the first support block 5. In this embodiment, the first support block 5 is an aluminum profile, and two first chute grooves are provided on the top thereof; therefore, two first sliders are provided at the bottom of the first connecting block 6 corresponding to the first chute grooves, and the first sliders are slidably connected to the first chute grooves;

[0037] Specifically, a first locking member is provided on the first connecting block 6, and the first locking member is used to fix the first connecting block 6; when the first clamping assembly and the second clamping assembly are moved to the specified position along the first direction, the first locking member fixes the first connecting block 6; in this embodiment, the first locking member is a first locking bolt.

[0038] In some embodiments, the second driving assembly includes: a second support block 7 and a second slider, the second support block 7 is fixedly connected to the first connecting block 6, and the second support block 7 is extended along the second direction; the second support block 7 is provided with a second slide groove extending along the second direction on one side along the first direction; the second slider is slidably connected to the second slide groove; the first clamping assembly or the second clamping assembly is fixedly connected to the second slider.

[0039] Specifically, the second driving assembly includes: a second support block 7 and a second slide groove; in this embodiment, the present application is provided with four second support blocks 7 corresponding to the side pillars 2 and the middle pillars 3, and the second support blocks 7 are extended along the second direction; each second support block 7 is provided with a first connecting block 6 on both sides along the first direction, and the second connecting block is fixedly connected to the first connecting block 6; the second support block 7 is an aluminum profile, and one side thereof along the first direction is provided with two second slide grooves extending along the second direction; two second sliders are correspondingly provided on the side of the first clamping assembly or the second clamping assembly close to the second support block 7, and the second sliders are slidably connected to the second slide grooves;

[0040] Specifically, a second locking member is provided on the first clamping assembly or the second clamping assembly, and the second locking member is used to fix the first clamping assembly or the second clamping assembly; when the first clamping assembly and the second clamping assembly are moved to a specified position along the second direction, the second locking member fixes the first clamping assembly or the second clamping assembly; in this embodiment, the second locking member is a second locking bolt.

[0041] In some embodiments, the first clamping assembly includes: a first side plate 8 and a first clamping structure, the first side plate 8 is arranged on one side of the side pillar 2, and the first clamping structure is arranged on the side of the first side plate 8 close to the side pillar 2; the first clamping structure has a first state and a second state, when in the first state, the clamping part of the first clamping structure cooperates with the first side plate 8 to clamp the side pillar 2; when in the second state, the clamping part of the first clamping structure moves away from the first side plate 8 to release the side pillar 2.

[0042] Specifically, the first clamping assembly includes: a first side plate 8 and a first pressing structure. The first side plate 8 is arranged on one side of the side support 2, and the first pressing structure is arranged on the side of the first side plate 8 close to the side support 2. Due to the height of the side support 2, the width of the first side plate 8 is greater than the width of the second side plate 13.

[0043] In this embodiment, the first side plate 8 is moved to the middle position of the side support 2 by the first driving assembly and the second driving assembly to maintain the stability of the clamping of the first side plate 8;

[0044] Specifically, the first clamping structure has a first state and a second state. When the first drive assembly and the second drive assembly move the first side plate 8 to the middle position of the side pillar 2, the first clamping structure switches to the first state. At this time, the clamping part of the first clamping structure cooperates with the first side plate 8 to clamp the side pillar 2; when the side pillar 2 and the support frame 1 are welded, the first clamping structure switches to the second state. At this time, the clamping part of the first clamping structure moves away from the first side plate 8 to release the side pillar 2.

[0045] In some embodiments, the first clamping structure includes: a first clamping wrench 9, the middle part of the first clamping wrench 9 is rotatably connected to the first side plate 8; the driving part of the first clamping wrench 9 is rotatably connected to the side of the first side plate 8, and the other end of the first rotating plate 10 is rotatably connected to the first side plate 8; the clamping part of the first clamping wrench 9 is fixedly connected to the first threaded rod 11; the first threaded rod 11 is provided with a first washer 12 at one end close to the side pillar 2; when the first clamping wrench 9 is in the first state, the first washer 12 abuts against the side pillar 2.

[0046] Specifically, such as Figure 3 As shown, the first clamping structure includes: a first clamping wrench 9, the middle part of the first clamping wrench 9 is rotatably connected to the first side plate 8; the driving part of the first clamping wrench 9 is rotatably connected to the first rotating plate 10 on one side close to the first side plate 8, and the other end of the first rotating plate 10 is rotatably connected to the first side plate 8; the clamping part of the first clamping wrench 9 is fixedly connected to the first threaded rod 11; when the first clamping wrench 9 is in the second state, the driving part of the first clamping wrench 9 moves in the direction close to the first side plate 8, and at this time, the clamping part of the first clamping wrench 9 moves in the direction away from the first side plate 8 to release the side support 2;

[0047] Specifically, a first washer 12 is provided at one end of the first threaded rod 11 close to the side pillar 2 . The first washer 12 is used to protect the side pillar 2 to prevent the side pillar 2 from being damaged when the first threaded rod 11 clamps the side pillar 2 .

[0048] In some embodiments, the second clamping assembly includes: a second side plate 13 and a second clamping structure, the middle pillar 3 is sleeved on the second side plate 13, and the second side plate 13 is provided with a second clamping structure on one side along the first direction; the second clamping structure has a third state and a fourth state, when in the third state, the clamping part of the second clamping structure cooperates with the second side plate 13 to clamp the middle pillar 3; when in the fourth state, the clamping part of the second clamping structure moves away from the second side plate 13 to release the middle pillar 3.

[0049] Specifically, in this embodiment, the middle pillar 3 is arranged on the support frame 1 in an inverted U shape, and the middle portion of the middle pillar 3 has a first space; the second clamping assembly includes: a second side plate 13 and a second pressing structure, and the middle pillar 3 is sleeved on the second side plate 13; the second side plate 13 is provided with the second pressing structure on one side along the first direction;

[0050] In this embodiment, the second side plate 13 is moved to the welding position of the middle pillar 3 by the first driving assembly, and the second side plate 13 is driven by the second driving assembly to be in the first space and abut against the top of the middle pillar 3 to support the middle pillar 3;

[0051] Specifically, the second clamping structure has a third state and a fourth state. When the second side plate 13 moves into the first space and abuts against the top of the middle pillar 3, the second clamping structure switches to the third state. At this time, the clamping part of the second clamping structure cooperates with the second side plate 13 to clamp the middle pillar 3; after the welding of the middle pillar 3 and the support frame 1 is completed, the second clamping structure switches to the fourth state. At this time, the clamping part of the second clamping structure moves away from the second side plate 13 to release the middle pillar 3.

[0052] In some embodiments, the second clamping structure includes: a second clamping wrench 14, the middle part of the second clamping wrench 14 is rotatably connected to the second side plate 13; the driving part of the second clamping wrench 14 is rotatably connected to the second rotating plate 15 on one side close to the second side plate 13, and the other end of the second rotating plate 15 is rotatably connected to the second side plate 13; the clamping part of the second clamping wrench 14 is fixedly connected to the second threaded rod 16; the second threaded rod 16 is provided with a second washer 17 at one end close to the middle pillar 3; when the second clamping wrench 14 is in the third state, the second washer 17 abuts against the middle pillar 3.

[0053] Specifically, such as Figure 4 As shown, the second clamping structure includes: a second clamping wrench 14, a middle portion of the second clamping wrench 14 is rotatably connected to the second side plate 13; a driving portion of the second clamping wrench 14 is rotatably connected to a second rotating plate 15 on one side close to the second side plate 13, and the other end of the second rotating plate 15 is rotatably connected to the second side plate 13; a clamping portion of the second clamping wrench 14 is fixedly connected to a second threaded rod 16; when the second clamping wrench 14 is in the fourth state, the driving portion of the second clamping wrench 14 moves toward the direction approaching the second side plate 13, and at this time, the clamping portion of the second clamping wrench 14 moves toward the direction away from the second side plate 13 to release the middle pillar 3;

[0054] Specifically, a second washer 17 is provided at one end of the second threaded rod 16 close to the middle pillar 3 . The second washer 17 is used to protect the middle pillar 3 and prevent the middle pillar 3 from being damaged when the second threaded rod 16 clamps the middle pillar 3 .

[0055] Workflow: When welding the side pillars 2 and the middle pillars 3 to the support frame 1, determine the positions of the side pillars 2 and the middle pillars 3 on the support frame 1, first loosen the multiple first locking pieces, move the first connecting blocks 6 located at both ends of the first support block 5 along the first direction to the corresponding welding positions of the side pillars 2, move the other two first connecting blocks 6 to the corresponding welding positions of the middle pillars 3, and tighten the first locking piece; then loosen the second locking piece, move the first side plate 8 to the middle position of the side pillar 2, move the second side plate 13 into the first space, and abut against the top of the middle pillar 3, and then tighten the second locking piece; finally, switch the first clamping wrench 9 to the first State, the second clamping wrench 14 switches to the third state, at this time the clamping part of the first clamping wrench 9 cooperates with the first side plate 8 to clamp the side pillar 2, and the clamping part of the second clamping wrench 14 cooperates with the second side plate 13 to clamp the middle pillar 3; when the side pillar 2 and the middle pillar 3 are respectively welded to the support frame 1, the first clamping wrench 9 switches to the second state, and the second clamping wrench 14 switches to the fourth state, at this time the clamping part of the first clamping wrench 9 is separated from the first side plate 8 to release the side pillar 2, and the clamping part of the second clamping wrench 14 moves away from the second side plate 13 to release the middle pillar 3; finally, the welded roller bracket is removed from the positioning base plate 4.

[0056] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A positioning and clamping device for welding roller supports, the roller support comprising a support frame (1), the support frame (1) being symmetrically provided with side supports (2) and a middle support (3) along its central axis, the side supports (2) being located at both ends of the support frame (1) along a first direction, the first direction being perpendicular to the central axis of the support frame (1); characterized in that: include: A positioning base plate (4), the support frame (1) being detachably connected to the positioning base plate (4); A driving structure, the driving structure comprising a first driving component and a second driving component, the first driving component being arranged on the positioning base plate (4), a plurality of second driving components being sequentially arranged on the first driving component along the first direction, the second driving component being respectively connected to a first clamping component and a second clamping component; the first clamping component being located at both ends of the first driving component along the first direction, the first clamping component being used to clamp the side support (2), and the second clamping component being used to clamp the middle support (3); the first driving component being used to drive the first clamping component and the second clamping component to move along the first direction; the second driving component being used to drive the first clamping component and the second clamping component to move along the second direction; the second direction being parallel to the central axis of the support frame (1).

2. A positioning and clamping device suitable for welding roller brackets according to claim 1, characterized in that: The first driving assembly comprises: a first supporting block (5) and a first connecting block (6); the first supporting block (5) is arranged on the positioning base plate (4), and the first supporting block (5) is extended along the first direction; the top of the first supporting block (5) is provided with a first sliding groove extending along the first direction; the first connecting block (6) is arranged on the top of the first supporting block (5), and the bottom of the first connecting block (6) is provided with a first sliding block, and the first sliding block is slidably connected to the first sliding groove; the first connecting block (6) is fixedly connected to the second driving assembly.

3. A positioning and clamping device suitable for welding roller brackets according to claim 2, characterized in that: The second driving assembly comprises: a second supporting block (7) and a second sliding block, wherein the second supporting block (7) is fixedly connected to the first connecting block (6), and the second supporting block (7) is extended along the second direction; a second sliding groove extending along the second direction is provided on one side of the second supporting block (7) along the first direction; the second sliding block is slidably connected to the second sliding groove; and the first clamping assembly or the second clamping assembly is fixedly connected to the second sliding block.

4. A positioning and clamping device suitable for welding roller supports according to claim 3, characterized in that: The first clamping assembly comprises: a first side plate (8) and a first clamping structure, wherein the first side plate (8) is arranged on one side of the side support (2), and the first clamping structure is arranged on the side of the first side plate (8) close to the side support (2); the first clamping structure has a first state and a second state, and when in the first state, the clamping portion of the first clamping structure cooperates with the first side plate (8) to clamp the side support (2); when in the second state, the clamping portion of the first clamping structure moves in a direction away from the first side plate (8) to release the side support (2).

5. A positioning and clamping device suitable for welding roller supports according to claim 4, characterized in that: The first clamping structure comprises: a first clamping wrench (9), the middle part of the first clamping wrench (9) is rotatably connected to the first side plate (8); the driving part of the first clamping wrench (9) is rotatably connected to a first rotating plate (10) on one side close to the first side plate (8), and the other end of the first rotating plate (10) is rotatably connected to the first side plate (8); the clamping part of the first clamping wrench (9) is fixedly connected to a first threaded rod (11); a first washer (12) is provided at one end of the first threaded rod (11) close to the side support (2); when the first clamping wrench (9) is in the first state, the first washer (12) abuts against the side support (2).

6. A positioning and clamping device suitable for welding roller supports according to claim 3, characterized in that: The second clamping assembly comprises: a second side plate (13) and a second clamping structure, the middle pillar (3) is sleeved on the second side plate (13), and the second side plate (13) is provided with the second clamping structure on one side along the first direction; the second clamping structure has a third state and a fourth state, and when in the third state, the clamping portion of the second clamping structure cooperates with the second side plate (13) to clamp the middle pillar (3); when in the fourth state, the clamping portion of the second clamping structure moves in a direction away from the second side plate (13) to release the middle pillar (3).

7. A positioning and clamping device for welding roller supports according to claim 6, characterized in that: The second clamping structure comprises: a second clamping wrench (14), the middle part of the second clamping wrench (14) is rotatably connected to the second side plate (13); the driving part of the second clamping wrench (14) is rotatably connected to a second rotating plate (15) on one side close to the second side plate (13), and the other end of the second rotating plate (15) is rotatably connected to the second side plate (13); the clamping part of the second clamping wrench (14) is fixedly connected to a second threaded rod (16); a second washer (17) is provided at one end of the second threaded rod (16) close to the middle pillar (3); when the second clamping wrench (14) is in the third state, the second washer (17) abuts against the middle pillar (3).

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