Test piece welding and fixing device for arc welding robot

Abstract

The utility model discloses a test piece welding and fixing device for an arc welding robot. The test piece welding and fixing device comprises a base, a workbench and a first sliding crimping device, the workbench is rotationally connected to the upper end face of the base in a sleeving mode. The first sliding crimping device is rotationally connected to the circumferential side wall of the base in a sleeving manner, the first sliding crimping device comprises a pair of overturning pressing plate assemblies which are symmetrically arranged on the side wall and are the same in structure and adjustable in height, the horizontal ends of the pair of overturning pressing plate assemblies are suspended over the workbench, and the front ends of the horizontal ends of the pair of overturning pressing plate assemblies are adjacent to each other; according to the utility model, the welding position is adjustable, and the test piece is still kept in a fixed state, so that the welded part of the test piece is prevented from dislocation or distortion in the test piece displacement process; the position of the first sliding crimping device relative to the test piece and the position of the second sliding crimping device relative to the test piece can be adjusted; the height between the first sliding crimping device and the workbench and the height between the second sliding crimping device and the workbench can be adjusted according to requirements, and the universality of the fixing device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile auxiliary devices, in particular to a welding and fixing device for an arc welding robot test piece. Background Art

[0002] At present, during the white body trial production process, when adjusting welding parameters at each station, test pieces are required for actual welding verification. During the welding process of the test pieces, a fixing device is needed to clamp and fix them. During the verification process of arc welding parameters, when welding a circumferential weld, generally, the test pieces to be welded are overlapped and placed on the operating table, and then fixed on the operating table with clamping plates or jigs before welding operations. However, there are the following problems: when welding a butt weld, the operating table will block the lower surface of the test piece; when welding a lap weld, the operating table will also block the lower surface of the test piece; if it is necessary to weld the weld of the test piece that is blocked, it is necessary to first release the fixation of the test piece, then adjust the position of the test piece, and then refix the test piece before continuing the welding. However, during the process of adjusting the position of the test piece, problems such as distortion, misalignment, and stress release are likely to occur at the welding part, affecting the welding quality. Content of the Utility Model

[0003] To solve the above problems, the utility model provides a welding and fixing device for an arc welding robot test piece. During the welding process of the test piece, the welding position can be adjusted and the test piece remains in a fixed state, avoiding misalignment or distortion of the welded part of the test piece during the displacement of the test piece and ensuring the welding quality of the test piece. A first sliding press-fitting device and a second sliding press-fitting device are provided, and the positions of the first sliding press-fitting device relative to the test piece and the second sliding press-fitting device relative to the test piece can both be adjusted. During the welding process of the test piece, by changing the positions of the test piece sliding press-fitting devices, the blocked weld of the test piece can be exposed to a weldable state. The heights of both the first sliding press-fitting device and the second sliding press-fitting device from the workbench can be adjusted according to requirements, so that the first sliding press-fitting device and the second sliding press-fitting device can adapt to test pieces of various thicknesses, improving the versatility of the fixing device.

[0004] The utility model provides a welding and fixing device for an arc welding robot test piece, which includes a base, a workbench, and a first sliding press-fitting device;

[0005] The workbench is rotatably sleeved on the upper end surface of the base, and the lower welding test piece is adsorbed and fixed on the upper end surface of the workbench. The workbench can rotate 360 degrees relative to the upper end of the base according to welding needs;

[0006] The first sliding and crimping device is rotatably sleeved on the circumferential side wall of the base. The first sliding and crimping device includes a pair of identically structured and height-adjustable flipping press plate assemblies symmetrically arranged on the side wall, and the horizontal ends of the pair of flipping press plate assemblies are suspended directly above the workbench. The front ends of the horizontal ends of the pair of flipping press plate assemblies are adjacent to each other. This structure enables the first sliding and crimping device to rotate 360 degrees around the base, so that the horizontal ends of the pair of flipping press plate assemblies can be respectively crimped on the upper end surfaces of the upper test pieces as needed. The front ends of the two horizontal ends are adjacent to each other without touching or interfering with each other, which can achieve the effect of fixing both ends of the upper end surface of the upper test piece. When the upper test piece is completely welded at the joint with the lower test piece except for the parts blocked by the pair of flipping press plate assemblies, the crimping limit of the horizontal ends of the pair of flipping press plate assemblies on the upper test piece can be separately released successively. The welding torch can weld and fix the joint between the two test pieces on the side where the crimping is released from the upper part. First, release the crimping on one side and then weld, then restore the crimping on this side, release the crimping on the other side and then weld, and the circumferential side walls of the two test pieces can be welded. Throughout the welding process, the two test pieces are always in a state of crimping limit fixation, avoiding the problems encountered in adjusting the welding position in the prior art.

[0007] The base is integrally in the shape of a cylindrical structure with an open upper end. The outer side wall of the lower part of the cylindrical structure is provided with a first limiting convex ring. The upper end surface of the first limiting convex ring is in circumferential sliding limit contact with the first sliding and crimping device. A pivot hole is provided in the middle of the lower bottom surface of the cylindrical structure. The lower part of the pivot on the workbench passes through the pivot hole and is exposed outside the lower end surface of the base. By rotating the lower end of the pivot of the workbench, the upper end surface of the workbench can rotate 360 degrees relative to the base, driving the adsorbed test piece to rotate 360 degrees.

[0008] The workbench includes a turntable and a pivot. The turntable is integrally a frustum of a cone with an inverted two-step structure. The frustum of a cone with the inverted two-step structure is rotatably sleeved on the open upper end of the base. The frustum of a cone with the inverted two-step structure is provided with a hollow cavity. A connection hole is provided at the center position of the upper end surface of the turntable. A vacuum chuck is fixedly sleeved on the connection hole. The lower end surface of the turntable is coaxially and fixedly connected with a pivot. The lower part of the pivot is rotatably sleeved in the pivot hole, and the lower end of the pivot is exposed outside the lower end surface of the base. Vent holes are evenly distributed in the circumferential direction on the lower end surface of the turntable. A vacuum extraction pipe penetrates through the lower end surface of the base. When the vacuum chuck needs to adsorb the lower test piece, the vacuum machine is connected to the vacuum extraction pipe to evacuate the cavity of the base and the hollow cavity of the workbench to a vacuum state, and the vacuum chuck can firmly adsorb the lower test piece on the upper end surface of the workbench.

[0009] The first sliding and crimping device further includes a first sliding ring. The first sliding ring is sleeved on the circumferential side wall of the base. The first sliding ring is in sliding limit contact with the first limiting convex ring. A pair of flipping press plate assemblies are respectively symmetrically arranged on the outer side wall of the first sliding ring.

[0010] Each flipping press plate assembly includes a first horizontal support arm, a first vertical guide rod, a first press plate, and a first limit bolt. One end of the first horizontal support arm is fixed to the outer side wall of the first slip ring. On the upper end face of the other end of the first horizontal support arm, the first vertical guide rod is vertically fixed. One end of the first press plate is slidably sleeved on the first vertical guide rod. One end of the first press plate is fixedly connected to the first vertical guide rod through the first limit bolt. The first press plate can rotate with the first vertical guide rod as the axis and move up and down along the first vertical guide rod.

[0011] The first press plate includes a first collar and a first crimping arm. The first collar is fixedly connected to one end of the first crimping arm to form an integrally connected first press plate that rotates horizontally. When it is necessary to weld the seam between the two test pieces corresponding to the first vertical guide rod, as long as the first limit bolt is loosened, the integrally formed first crimping arm and the first collar rotate together by 90 degrees, providing an avoidance space for the welding torch, and the welding torch can weld the corresponding position between the two test pieces; alternatively, one end of the first crimping arm is rotatably hinged to the outer side wall of the first collar at 90 degrees. When the first crimping arm rotates upward by 90 degrees and fits parallel to the outer side wall of the first collar, it provides an avoidance space for the welding torch, facilitating the welding torch to weld the seam between the two test pieces corresponding to the first vertical guide rod.

[0012] A test piece welding and fixing device for an arc welding robot further includes a second sliding crimping device. A detachable second limit convex ring is also provided on the upper part of the outer side wall of the base. The second sliding crimping device is rotatably and limit-sleeved on the outer side wall of the base; the second sliding crimping device includes a second slip ring, a second horizontal support arm, a second vertical guide rod, a second press plate, and a second limit bolt. The upper and lower end faces of the second slip ring respectively slide and contact the edge of the lower end face of the exposed turntable and the upper end face of the second limit convex ring. One end of the second horizontal support arm is fixed to the outer side wall of the second slip ring. On the upper end face of the other end of the second horizontal support arm, the second vertical guide rod is vertically fixed. One end of the second press plate is slidably sleeved on the second vertical guide rod. One end of the second press plate can rotate 360 degrees with the second vertical guide rod as the axis and is fixedly connected to the second vertical guide rod through the second limit bolt. The second press plate can rotate with the second vertical guide rod as the axis and also move up and down along the second vertical guide rod. The second press plate is integrally formed by a second crimping arm and a second collar. The second collar is slidably sleeved on the second vertical guide rod and is fixedly connected to the second vertical guide rod through the second limit bolt. The second crimping arm can be suspended above the upper end face of the turntable relative to the two first crimping arms in a staggered manner. The second crimping arm can be crimped on the upper end face of the upper test piece in a staggered manner. In this way, a three-end crimping effect is formed on the upper end face of the upper test piece. When it is necessary to weld the seam of the test piece corresponding to any one end or two ends, the crimping of the upper test piece by the crimping arm at any one end or any two ends is released, providing an avoidance space, and the welding torch can weld the corresponding position between the two test pieces. There is always one crimping arm or two crimping arms for limiting and crimping the upper test piece, and the two test pieces will not be misaligned, avoiding the problems caused by the prior art.

[0013] The lower part of the outer side wall of the base is provided with a pivot positioning perforation, and a pivot positioning bolt is screwed in the pivot positioning perforation. The front end of the pivot positioning bolt can be in contact and fixed with the pivot limit. A ball valve is arranged on the vacuum extraction pipe, which can control whether the vacuum tube, the cavity of the base, and the hollow cavity of the workbench are in a vacuum state or an atmospheric air state.

[0014] The pivot is provided with an annular arc groove corresponding to the front end of the pivot positioning bolt. The front end of the pivot positioning bolt is of a hemispherical structure. When the pivot positioning bolt is only adjacent to the annular arc groove without being in contact and fixed with it, the pivot positioning bolt plays an up-and-down limiting role on the workbench to prevent the workbench from moving up and down. When the pivot positioning bolt is in contact and fixed with the annular arc groove, the pivot positioning bolt plays an axial rotation limiting role on the workbench. Together with the first crimping arm or the second crimping arm, it prevents the workbench from rotating during the welding process and causing the weld between the two test pieces to be missed.

[0015] On the circumferential side walls of the first slip ring and the second slip ring, a first slip ring fixing bolt and a second slip ring fixing bolt are respectively arranged through cantilever brackets. The first slip ring fixing bolt is in contact and fixed with the outer side wall of the second limit convex ring through the cantilever bracket screwed on the outer side wall of the first slip ring, and the second slip ring fixing bolt is in contact and fixed with the outer side wall of the exposed turntable through the cantilever bracket screwed on the outer side wall of the second slip ring. The positions of the first slip ring and the second slip ring rotated to the specified positions can be locked by the first slip ring fixing bolt and the second slip ring fixing bolt, avoiding affecting the positions of the test pieces on the upper part of the crimping.

[0016] Beneficial effects

[0017] During the welding process of the test pieces of the present utility model, the welding position is adjustable and the test pieces still remain fixed, avoiding dislocation or distortion of the welded parts of the test pieces during the displacement of the test pieces and ensuring the welding quality of the test pieces. The first sliding crimping device and the second sliding crimping device are provided, and the positions of the first sliding crimping device relative to the test pieces and the second sliding crimping device relative to the test pieces can both be adjusted. During the welding process of the test pieces, by changing the positions of the test piece sliding crimping devices, the welds blocked by the test pieces are exposed and in a weldable state. The heights between both the first sliding crimping device and the second sliding crimping device and the workbench can be adjusted according to requirements, so that the first sliding crimping device and the second sliding crimping device can adapt to test pieces of various thicknesses, improving the versatility of the fixing device. Description of the drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model in a bottom view.

[0019] Figure 2 It is a schematic diagram of a partial enlarged sectional structure of the present utility model.

[0020] Figure 3 is a schematic diagram of the three-dimensional structure of the present utility model Figure 1 .

[0021] Figure 4 is a schematic diagram of the three-dimensional structure of the present utility model Figure 2 .

[0022] Figure 5 is a schematic diagram of the three-dimensional structure of the present utility model Figure 3 .

[0023] Figure 6 is a schematic diagram of the working principle structure of the present utility model.

[0024] Figure 7 is a schematic diagram of the structure of the second sliding crimping device of the present utility model.

[0025] In the figure:

[0026] 1. Base; 11. First limiting convex ring; 12. Pivot hole; 13. Vacuum extraction pipe; 131. Ball valve; 14. Pivot positioning perforation; 15. Pivot positioning bolt; 16. Second limiting convex ring;

[0027] 2. Workbench; 21. Turntable; 211. Connecting hole; 212. Vacuum chuck; 213. Vent hole; 22. Pivot; 221. Annular arc groove;

[0028] 3. First sliding crimping device; 31. Flipping pressing plate assembly; 311. First horizontal support arm; 312. First vertical guide rod; 313. First pressing plate; 3131. First sleeve ring; 3132. First crimping arm; 314. First limiting bolt; 32. First sliding ring; 321. First sliding ring fixing bolt;

[0029] 4. Second sliding crimping device; 41. Second sliding ring; 411. Second sliding ring fixing bolt; 42. Second horizontal support arm; 43. Second vertical guide rod; 44. Second pressing plate; 441. Second crimping arm; 442. Second sleeve ring; 45. Second limiting bolt. Specific embodiments

[0030] In order to make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model and are not intended to limit the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model are shown in the drawings rather than all of them.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Embodiment 1

[0034] See Figure 1 - Figure 2 As shown, a fixing device for welding test pieces of an arc welding robot includes a base 1, a workbench 2, and a first sliding crimping device 3;

[0035] The workbench 2 is rotatably sleeved on the upper end surface of the base 1;

[0036] The first sliding crimping device 3 is rotatably sleeved on the circumferential side wall of the base 1. The first sliding crimping device 3 includes a pair of identical height-adjustable flipping pressing plate assemblies 31 symmetrically arranged on the side wall, and the horizontal ends of the pair of flipping pressing plate assemblies 31 are suspended directly above the workbench 2, and the front ends of the horizontal ends of the pair of flipping pressing plate assemblies 31 are adjacent to each other.

[0037] The base 1 is integrally in a cylindrical structure with an open upper end. The outer side wall of the lower part of the cylindrical structure is provided with a first limiting convex ring 11. The upper end surface of the first limiting convex ring 11 is in circumferential sliding limit contact with the first sliding crimping device 3. A pivot hole 12 is provided in the middle of the lower bottom surface of the cylindrical structure. The lower part of the pivot on the workbench 2 passes through the pivot hole 12 and is exposed outside the lower end surface of the base 1.

[0038] The workbench 2 includes a turntable 21 and a pivot 22. The turntable 21 is an inverted truncated cone with a two-step structure as a whole. The inverted truncated cone with a two-step structure is rotationally sleeved on the upper opening of the base 1 in a matching manner. The inverted truncated cone with a two-step structure is provided with a hollow cavity. At the center position of the upper end surface of the turntable 21, there is a connecting hole 211, and a vacuum chuck 212 is fixedly sleeved on the connecting hole. At the center of the lower end surface of the turntable 21, a pivot 22 is coaxially and fixedly connected. The lower part of the pivot 22 is rotationally sleeved in the pivot hole 12, and the lower end of the pivot 22 is exposed outside the lower end surface of the base 1. Vent holes 213 are evenly distributed circumferentially on the lower end surface of the turntable 21, and a vacuum extraction tube 13 penetrates through the lower end surface of the base 1.

[0039] The first sliding crimping device 3 further includes a first slip ring 32. The first slip ring 32 is sleeved on the circumferential side wall of the base 1, and the first slip ring 32 is in sliding limit contact with the first limiting convex ring 11. A pair of flipping press plate assemblies 31 are symmetrically arranged on the outer side wall of the first slip ring 32 respectively.

[0040] Each flipping press plate assembly 31 includes a first horizontal support arm 311, a first vertical guide rod 312, a first press plate 313 and a first limiting bolt 314. One end of the first horizontal support arm 311 is fixed to the outer side wall of the first slip ring 32. On the upper end surface of the other end of the first horizontal support arm 311, a first vertical guide rod 312 is vertically fixed. One end of the first press plate 313 is slidably sleeved on the first vertical guide rod 312, and one end of the first press plate 313 is fixedly connected to the first vertical guide rod 312 through the first limiting bolt 314.

[0041] The first press plate 313 includes a first collar 3131 and a first crimping arm 3132. One end of the first crimping arm 3132 is rotatably hinged to the outer side wall of the first collar 3131 at 90 degrees.

[0042] Embodiment 2

[0043] See Figure 2 - Figure 7 As shown, a welding and fixing device for an arc welding robot test piece includes a base 1, a workbench 2 and a first sliding crimping device 3;

[0044] The workbench 2 is rotationally sleeved on the upper end surface of the base 1;

[0045] The first sliding crimping device 3 is rotationally sleeved on the circumferential side wall of the base 1. The first sliding crimping device 3 includes a pair of flipping press plate assemblies 31 with the same structure and adjustable height symmetrically arranged on the side wall. The horizontal ends of the pair of flipping press plate assemblies 31 are suspended directly above the workbench 2, and the front ends of the horizontal ends of the pair of flipping press plate assemblies 31 are adjacent to each other.

[0046] The base 1 is integrally in the shape of a cylindrical structure with an open upper end. The outer side wall of the lower part of the cylindrical structure is provided with a first limiting convex ring 11. The upper end face of the first limiting convex ring 11 is in circumferential sliding limiting contact with a first sliding pressing device 3. The middle part of the lower bottom surface of the cylindrical structure is provided with a pivot hole 12. The lower part of the pivot on the workbench 2 passes through the pivot hole 12 and is exposed outside the lower end face of the base 1.

[0047] The workbench 2 includes a turntable 21 and a pivot 22. The turntable 21 is integrally a frustum of a cone with an inverted two-step structure. The frustum of a cone with the inverted two-step structure is rotatably sleeved on the open upper end of the base 1. The frustum of a cone with the inverted two-step structure is provided with a hollow cavity. The center position of the upper end face of the turntable 21 is provided with a connecting hole 211. A vacuum chuck 212 is fixedly sleeved on the connecting hole. The lower end face center of the turntable 21 is coaxially fixedly connected with a pivot 22. The lower part of the pivot 22 is rotatably sleeved in the pivot hole 12, and the lower end of the pivot 22 is exposed outside the lower end face of the base 1. The lower end face of the turntable 21 is circumferentially and evenly provided with ventilation holes 213. A vacuum extraction pipe 13 is penetrated through the lower end face of the base 1.

[0048] The first sliding pressing device 3 further includes a first sliding ring 32. The first sliding ring 32 is sleeved on the circumferential side wall of the base 1. The first sliding ring 32 is in sliding limiting contact with the first limiting convex ring 11. A pair of flipping pressing plate assemblies 31 are symmetrically arranged on the outer side wall of the first sliding ring 32 respectively.

[0049] Each flipping pressing plate assembly 31 includes a first horizontal support arm 311, a first vertical guide rod 312, a first pressing plate 313 and a first limiting bolt 314. One end of the first horizontal support arm 311 is fixed on the outer side wall of the first sliding ring 32. The upper end face of the other end of the first horizontal support arm 311 is vertically fixed with a first vertical guide rod 312. One end of the first pressing plate 313 is slidably sleeved on the first vertical guide rod 312. One end of the first pressing plate 313 is fixedly connected with the first vertical guide rod 312 through the first limiting bolt 314.

[0050] The first pressing plate 313 includes a first sleeve ring 3131 and a first pressing arm 3132. The first sleeve ring 3131 is fixedly connected with one end of the first pressing arm 3132, forming a first pressing plate that is integrally connected and horizontally rotatable (not shown in the figure, and its structure is the same as that of the second pressing plate 44).

[0051] A fixing device for welding test pieces of an arc welding robot further includes a second sliding crimping device 4. An upper portion of the outer side wall of the base 1 is also provided with a detachable second limiting convex ring 16. The second sliding crimping device 4 is rotationally and limit-sleeved on the outer side wall of the base 1. The second sliding crimping device 4 includes a second sliding ring 41, a second horizontal support arm 42, a second vertical guide rod 43, a second pressing plate 44, and a second limiting bolt 45. Upper and lower end faces of the second sliding ring 41 are respectively in sliding contact with the lower end face edge of the exposed turntable 21 and the upper end face of the second limiting convex ring 16. One end of the second horizontal support arm 42 is fixed to the outer side wall of the second sliding ring 41. An upper end face of the other end of the second horizontal support arm 42 is vertically fixed with the second vertical guide rod 43. One end of the second pressing plate 44 is slidably sleeved on the second vertical guide rod 43. One end of the second pressing plate 44 can rotate 360 degrees with the second vertical guide rod 43 as the axis and is fixedly connected to the second vertical guide rod 43 through the second limiting bolt 45. The second pressing plate 44 is integrally formed by a second pressing arm 441 and a second sleeve 442. The second sleeve 442 is slidably sleeved on the second vertical guide rod 43 and is fixedly connected to the second vertical guide rod 43 through the second limiting bolt 45. The second pressing arm 441 can be suspended above the upper end face of the turntable 21 in a misaligned manner relative to the two first pressing arms 3132.

[0052] Embodiment 3

[0053] See Figure 2 - Figure 7 As shown, a fixing device for welding test pieces of an arc welding robot, which is different from Embodiment 2 in that a pivot positioning through hole 14 is provided in a lower portion of the outer side wall of the base 1, and a pivot positioning bolt 15 is screwed in the pivot positioning through hole 14. The front end of the pivot positioning bolt 15 can be in limiting contact and fixation with the pivot 22; a ball valve 131 is provided on the vacuum extraction pipe 13.

[0054] The pivot 22 is provided with an annular arc groove 221 corresponding to the front end position of the pivot positioning bolt 15, and the front end of the pivot positioning bolt 15 is of a hemispherical structure.

[0055] First sliding ring fixing bolts 321 and second sliding ring fixing bolts 411 are respectively provided on the circumferential side walls of the first sliding ring 32 and the second sliding ring 41 through cantilever brackets. The first sliding ring fixing bolt 321 is in contact and fixation with the outer side wall of the second limiting convex ring 16 through the cantilever bracket screwed on the outer side wall of the first sliding ring 32, and the second sliding ring fixing bolt 411 is in contact and fixation with the outer side wall of the exposed turntable 21 through the cantilever bracket screwed on the outer side wall of the second sliding ring 41.

[0056] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all of them fall within the protection scope of the present invention.

Claims

1. A welding fixture for arc welding robot test piece, characterized in that: It comprises a base (1), a workbench (2) and a first sliding crimping device (3); The workbench (2) is rotatably sleeved on the upper end surface of the base (1); The first sliding crimping device (3) is rotatably sleeved on the circumferential side wall of the base (1), and comprises a pair of height-adjustable flip pressure plate assemblies (31) of the same structure symmetrically arranged on the side wall, and the horizontal ends of the pair of flip pressure plate assemblies (31) are suspended directly above the workbench (2), and the front ends of the horizontal ends of the pair of flip pressure plate assemblies (31) are adjacent to each other.

2. The arc welding robot test piece welding fixture according to claim 1, characterized in that: The base (1) is in the form of a cylindrical structure with an open top. The outer wall of the lower part of the cylindrical structure is provided with a first limiting convex ring (11). The upper end surface of the first limiting convex ring (11) is circumferentially slidably limited and in contact with a first sliding crimping device (3). A pivot hole (12) is provided in the middle of the lower bottom surface of the cylindrical structure. The lower part of the pivot on the workbench (2) passes through the pivot hole (12) and is exposed outside the lower end surface of the base (1).

3. The arc welding robot test piece welding fixture according to claim 2, characterized in that: The workbench (2) comprises a turntable (21) and a pivot (22). The turntable (21) is an inverted two-step structured truncated table as a whole. The inverted two-step structured truncated table is matched and rotatably sleeved on the upper opening of the base (1). The inverted two-step structured truncated table is provided with a hollow cavity. A connecting hole (211) is provided at the center of the upper end surface of the turntable (21). A vacuum suction cup (212) is fixedly sleeved on the connecting hole. The center of the lower end surface of the turntable (21) is coaxially fixedly connected with the pivot (22). The lower part of the pivot (22) is rotatably sleeved in the pivot hole (12), and the lower end of the pivot (22) is exposed outside the lower end surface of the base (1). The lower end surface of the turntable (21) is evenly distributed with air holes (213). A vacuum suction pipe (13) is passed through the lower end surface of the base (1).

4. The arc welding robot test piece welding fixture according to claim 3, characterized in that: The first sliding crimping device (3) also includes a first sliding ring (32), the first sliding ring (32) is sleeved on the circumferential side wall of the base (1), the first sliding ring (32) is in sliding and limiting contact with the first limiting convex ring (11), and a pair of flip pressure plate assemblies (31) are symmetrically arranged on the outer side wall of the first sliding ring (32).

5. The welding fixture for arc welding robot test piece according to claim 4, characterized in that: Each flip pressure plate assembly (31) comprises a first horizontal support arm (311), a first vertical guide rod (312), a first pressure plate (313) and a first limiting bolt (314); one end of the first horizontal support arm (311) is fixed to the outer wall of the first sliding ring (32); the first vertical guide rod (312) is vertically fixed to the upper end surface of the other end of the first horizontal support arm (311); one end of the first pressure plate (313) is slidably sleeved on the first vertical guide rod (312); one end of the first pressure plate (313) is fixedly connected to the first vertical guide rod (312) via the first limiting bolt (314).

6. The welding fixture for arc welding robot test piece according to claim 5, characterized in that: The first pressing plate (313) comprises a first sleeve (3131) and a first crimping arm (3132), wherein the first sleeve (3131) is fixedly connected to one end of the first crimping arm (3132) to form an integrally connected horizontally rotating first pressing plate; or, one end of the first crimping arm (3132) is hingedly connected to the outer wall of the first sleeve (3131) by 90 degrees.

7. The welding fixture for arc welding robot test piece according to claim 6, characterized in that: The second sliding crimping device (4) is also provided with a detachable second limiting convex ring (16) on the upper part of the outer wall of the base (1); the second sliding crimping device (4) is rotatably limited and sleeved on the outer wall of the base (1); the second sliding crimping device (4) comprises a second sliding ring (41), a second horizontal support arm (42), a second vertical guide rod (43), a second pressure plate (44) and a second limiting bolt (45); the upper and lower end surfaces of the second sliding ring (41) are respectively slidably contacted with the exposed lower end surface edge of the turntable (21) and the upper end surface of the second limiting convex ring (16); one end of the second horizontal support arm (42) is fixed on the outer wall of the second sliding ring (41); the upper end surface of the other end of the second horizontal support arm (42) is vertically fixed to the outer wall of the second sliding ring (41); A second vertical guide rod (43) is fixed thereto, one end of a second pressing plate (44) is slidably sleeved on the second vertical guide rod (43), one end of the second pressing plate (44) can rotate 360 ​​degrees around the second vertical guide rod (43) and is fixedly connected to the second vertical guide rod (43) through a second limiting bolt (45), the second pressing plate (44) is integrally formed by a second crimping arm (441) and a second sleeve ring (442), the second sleeve ring (442) is slidably sleeved on the second vertical guide rod (43) and is fixedly connected to the second vertical guide rod (43) through a second limiting bolt (45), and the second crimping arm (441) can be staggered relative to the two first crimping arms (3132) and suspended above the upper end surface of the turntable (21).

8. The arc welding robot test piece welding fixture according to claim 7, characterized in that: A pivot positioning through hole (14) is provided at the lower part of the outer wall of the base (1), a pivot positioning bolt (15) is screwed into the pivot positioning through hole (14), and the front end of the pivot positioning bolt (15) can be fixed with the pivot (22) in a limited position contact manner; a ball valve (131) is provided on the vacuum tube (13).

9. The welding fixture for arc welding robot test piece according to claim 8, characterized in that: The pivot (22) is provided with an annular arc groove (221) at a position corresponding to the front end of the pivot positioning bolt (15), and the front end of the pivot positioning bolt (15) is a hemispherical structure.

10. The arc welding robot test piece welding fixture according to claim 9, characterized in that: A first slip ring fixing bolt (321) and a second slip ring fixing bolt (411) are respectively provided on the circumferential side walls of the first slip ring (32) and the second slip ring (41) via a cantilever bracket. The first slip ring fixing bolt (321) is fixed in contact with the outer wall of the second limiting convex ring (16) via a cantilever bracket screwed on the outer wall of the first slip ring (32). The second slip ring fixing bolt (411) is fixed in contact with the outer wall of the exposed turntable (21) via a cantilever bracket screwed on the outer wall of the second slip ring (41).

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