Welding fixture for robot production

Abstract

The invention discloses a welding fixture for robot production, which relates to the technical field of welding fixtures and comprises a guide rail and clamping seats slidably connected to two sides of the guide rail. Mounting assemblies are embedded in the sides, close to each other, of the two clamping seats, and a clamping mechanism used for multi-point extrusion of workpieces is arranged on the front plate. According to the welding clamp for robot production, when a lower clamping block and an upper clamping block of the clamping mechanism are controlled to achieve deflection unfolding in an X-shaped state, the lower clamping block and the upper clamping block can be ejected out by prism pins, and therefore lateral multi-point-position clamping can be conducted on the plane portion of a robot production workpiece through the unfolded lower clamping block and the unfolded upper clamping block; the upper clamping blocks can be matched with the fastening mechanisms to fasten and extrude the edge positions of the workpieces far away from the upper planes of the guide rails when being separated and unfolded, vibration deviation is prevented when the workpieces are welded, meanwhile, the adjustable base is used for adjusting the placing angle of the two guide rails, and it is ensured that the welding clamp can adapt to clamping of the workpieces with different bending degrees.

Description

Technical Field

[0001] The invention relates to the technical field of welding fixtures, in particular to a welding fixture for robot production. Background Art

[0002] A robot is an intelligent machine that can work semi-autonomously or fully autonomously. It usually has basic features such as perception, decision-making, and execution. It can assist or even replace humans in completing dangerous, heavy, and complex tasks, improving work efficiency and quality. Existing robots need to be welded during the production and manufacturing process.

[0003] In the prior art, robot welding production generally requires the use of a matching welding fixture to clamp the workpiece, and then use plasma welding equipment to weld and assemble the heavy metal workpieces together. However, the conventional clamping method used in the prior art can easily cause the workpiece welding to shift when the equipment vibrates. Therefore, we propose a welding fixture for robot production. Summary of the invention

[0004] The object of the present invention is to provide a welding fixture for robot production to solve the problems raised by the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: A welding fixture for robot production, comprising a guide rail and a clamp seat slidably connected to both sides of the guide rail;

[0006] A mounting assembly is embedded on one side of the two clamping seats that are close to each other, and the mounting assembly is composed of a back plate and a front plate spliced ​​together, and the back plate and the front plate are mounted to the clamping seat by bolts, and a T-shaped driving pin runs through the middle of the clamping seat, the back plate and the front plate, and an arc groove eccentrically arranged with the driving pin is provided on the side of the driving pin close to the front plate, and a clamping mechanism for multi-point extrusion of the workpiece is provided on the front plate, and the clamping mechanism includes a straight slide groove and a through port provided inside the front plate, the interior of the straight slide groove is symmetrically connected with a rack rail, and adjustment grooves are provided on both sides of the rack rail, and a hollow gear meshing with the rack rail is rotatably connected in the through port, a prismatic pin is inserted in the middle of the hollow gear, and one end of the prismatic pin is movably connected to a guide block inside the front plate, and a pull rod connected to the adjustment groove is provided on one side of the guide block;

[0007] The prism pin near the lower side of the front plate is fixed with a lower clamping block at one end extending out of the through hole, and the prism pin near the upper side of the front plate is fixed with an upper clamping block at one end extending out of the through hole, and the upper side of the upper clamping block is connected with a clamping mechanism for clamping the edge of the workpiece.

[0008] Preferably, a worm is rotatably connected to the side of the guide rail, an inner cavity is opened on the upper plane of the guide rail, and a worm wheel is movably connected in the inner cavity, threaded rods with opposite spiral directions are fixed on both sides of the worm wheel, and a slider that slides in matching with the inner cavity is fixed to the bottom of the clamp seat, and the slider is threadedly connected to the threaded rod.

[0009] Preferably, a cylindrical lever is integrally formed on the surface of the rack rail away from the back plate, and the cylindrical lever is slidably connected to the arc groove on one side of the driving pin.

[0010] Preferably, the clamping mechanism includes a traction arm a movably connected to the upper clamping block, the upper end of the traction arm a is rotatably plugged with a connecting piece, a horizontal pin passes through the middle of the connecting piece, the end of the horizontal pin away from the front plate is threadedly connected to a pressure rod for vertically clamping the edge of the workpiece, a buffer pad is bonded to the bottom end of the pressure rod, and an oblique groove sliding with the tail of the pressure rod is provided on the adjacent side of the clamp seat and the upper end of the front plate.

[0011] Preferably, the fastening mechanism comprises a traction arm b movably connected to the upper clamping block, an extrusion piece is inserted at the upper end of the traction arm b, and the extrusion piece is composed of a spline portion, a disc portion, and a clamping tooth fixed at an equal angle to the surface of the disc portion, and the upper end of the traction arm b is fastened to the spline portion of the extrusion piece by a screw;

[0012] The spline portion of the extrusion piece is inserted into the interior of the limit block, a rotating shaft is connected to the middle of the limit block, toothed portions are provided at both ends of the rotating shaft, and the toothed portions of the rotating shaft are meshed with the teeth of the disc portion of the extrusion piece, a fan-shaped block for elastically fastening the edge of the workpiece is installed on the outer side of the rotating shaft, and an avoidance groove for accommodating the fan-shaped block is provided on the adjacent side of the clamp seat and the upper end of the front plate.

[0013] Preferably, a base is provided below the guide rail, a fixing seat is welded to the top surface of the base, and an upper side of the fixing seat is mounted on one side of the guide rail.

[0014] Preferably, a gas rod a is also connected to the upper side of the base.

[0015] Preferably, a swing arm mounted on the end of the driving pin is provided on the outer side of the clamp seat, a telescopic rod is connected between the lower ends of the two swing arms, and the telescopic rod is connected to the output end of the gas rod a.

[0016] Preferably, an intermediate seat is rotatably connected between the two bases.

[0017] Preferably, a push-pull arm is rotatably connected to a corner of the base close to the middle seat, a gas rod b is installed on one side of the middle seat, and the output end of the gas rod b is connected to the hinge shafts of the two push-pull arms.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: when the lower clamp block and the upper clamp block of the robot production welding fixture control the clamping mechanism to realize the deflection and expansion of the X-shaped state, the lower clamp block and the upper clamp block will also be pushed out by the prismatic pin, so that the flat part of the robot production workpiece can be clamped laterally at multiple points through the expanded lower clamp block and the upper clamp block, and the upper clamp block can cooperate with the clamping mechanism to clamp and squeeze the edge position of the workpiece away from the upper plane of the guide rail when separated and expanded, so as to prevent vibration and displacement when welding the workpiece, and at the same time, use the adjustable base to adjust the placement angle of the two sets of guide rails to ensure that the welding fixture can adapt to clamping workpieces with different curvatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention without clamping the workpiece;

[0020] Figure 2 It is a schematic diagram of a three-dimensional structure of the guide rail, the clamping seat and the clamping mechanism of the present invention in combination;

[0021] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the combined connection of the guide rail, the clamping seat and the clamping mechanism of the present invention;

[0022] Figure 4 It is a schematic diagram of a three-dimensional exploded structure of the guide rail, the clamping seat and the clamping mechanism combined and connected in the present invention;

[0023] Figure 5 It is a schematic diagram of a three-dimensional exploded structure of the clamping seat and the clamping mechanism combined and connected in the first embodiment of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the front plate and the fastening mechanism of the first embodiment of the present invention;

[0025] Figure 7 It is a schematic diagram of a three-dimensional cross-section structure of a front plate and a fastening mechanism according to a first embodiment of the present invention;

[0026] Figure 8 It is a schematic diagram of a three-dimensional structure of a clamping base and a clamping mechanism combined and connected in a second embodiment of the present invention;

[0027] Fig. 9 It is a schematic diagram of a three-dimensional exploded structure of a clamping seat and a clamping mechanism combined and connected in a second embodiment of the present invention;

[0028] Fig.10 It is a schematic diagram of the three-dimensional structure of the front plate and the fastening mechanism of the second embodiment of the present invention;

[0029] Fig.11 It is a schematic diagram of the three-dimensional structure of a fan-shaped block according to the second embodiment of the present invention;

[0030] Fig.12It is a schematic diagram of the three-dimensional structure of an extrusion piece according to a second embodiment of the present invention;

[0031] Fig.13 It is a schematic diagram of the three-dimensional structure of the present invention for clamping a bent workpiece.

[0032] In the figure: 1, guide rail; 101, worm; 102, worm wheel; 103, threaded rod; 2, clamping seat; 201, slider; 202, drive pin; 203, swing arm; 204, telescopic rod; 3, mounting assembly; 301, back plate; 302, front plate; 4, clamping mechanism; 401, straight slide groove; 402, through port; 403, rack rail; 404, hollow gear; 405, prismatic pin; 406, guide block; 407, adjustment groove; 408, lower clamping block; 409, upper clamping block; 5, fastening mechanism; 501, traction arm a; 502, connecting piece; 503, horizontal pin; 504, pressure rod; 505, traction arm b; 506, extrusion piece; 507, limit block; 508, rotating shaft; 509, fan-shaped block; 6, inclined groove; 7, avoidance groove; 8, base; 801, fixed seat; 802, gas rod a; 9, middle seat; 901, push-pull arm; 902, gas rod b. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 5 , Fig. 9 and Fig.13 The present invention provides a technical solution: a welding fixture for robot production, comprising a guide rail 1 and a clamping seat 2 slidably connected to both sides of the guide rail 1; a mounting assembly 3 is inlaid on one side of the two clamping seats 2 close to each other, and the mounting assembly 3 is composed of a back plate 301 and a front plate 302 spliced ​​together, and the back plate 301 and the front plate 302 are installed with the clamping seat 2 by bolts. When in use, the back plate 301 and the front plate 302 are installed with the clamping seat 2 by bolts, which facilitates the clamping seat 2 and the mounting assembly 3 to be quickly assembled or disassembled.

[0035] See also Figure 1-Figure 7 , Fig. 9 and Fig.10A T-shaped driving pin 202 is passed through the middle of the clamping seat 2, the back plate 301 and the front plate 302, and an arc groove eccentrically arranged with the driving pin 202 is opened on the side of the driving pin 202 close to the front plate 302. A clamping mechanism 4 for multi-point extrusion of the workpiece is arranged on the front plate 302. The clamping mechanism 4 includes a straight slide groove 401 and a through hole 402 opened inside the front plate 302. The interior of the straight slide groove 401 is symmetrically connected with a rack rail 403, and two sides of the rack rail 403 are opened. An adjusting groove 407 is rotatably connected in the through opening 402 with a hollow gear 404 meshing with the rack rail 403, a prismatic pin 405 is inserted in the middle of the hollow gear 404, and one end of the prismatic pin 405 is movably connected to a guide block 406 inside the front plate 302, the prismatic pin 405 close to the lower side of the front plate 302 is fixed with a lower clamping block 408 at the end extending out of the through opening 402, and the prismatic pin 405 close to the upper side of the front plate 302 is fixed with an upper clamping block 409 at the end extending out of the through opening 402.

[0036] When the robot production welding fixture is in use, the workpiece of the production robot is placed between two adjacent clamping seats 2, and the driving pin 202 is controlled to rotate forward, so that the driving pin 202 will squeeze the cylindrical lever located on the surface of the rack rail 403 through the eccentrically arranged arc groove on the surface, so that the two rack rails 403 in the same group move away from each other along the straight slide groove 401, and the sliding rack rail 403 will mesh with the hollow gear 404 for transmission. When the hollow gear 404 rotates, it will drive the middle prism pin 405 to rotate, and at the same time, the lower clamp block 408 and the upper clamp block 409 fixed to one end of the prism pin 405 will also rotate, so the lower clamp block 408 and the upper clamp block 409 can complete the rotation and expansion on one side of the front plate 302 when deflected.

[0037] See also Figure 6 , Figure 7 , Fig. 9 and Fig.10 An annular groove is formed on the inner wall of the through opening 402 , and an annular rail is fixed on one side of the hollow gear 404 , and the hollow gear 404 is slidably connected to the annular groove on the inner wall of the through opening 402 through the annular rail.

[0038] When the robot production welding fixture is in use, the hollow gear 404 can rotate and slide in the annular groove on the inner wall of the through-port 402 through the annular rail, which can prevent the hollow gear 404 from escaping from the through-port 402 and ensure that the hollow gear 404 can always mesh with the rack rail 403.

[0039] See also Figure 3 , Figure 5 and Figure 7A pull rod connected to the adjustment groove 407 is provided on one side of the guide block 406. The adjustment groove 407 is composed of two vertical buffer chambers and an inclined chamber connected between the two vertical buffer chambers. A cylindrical lever is integrally formed on the surface of the rack rail 403 away from the back plate 301, and the cylindrical lever is slidably connected to the arc groove on one side of the driving pin 202.

[0040] When the robot production welding fixture is in use, when the two rack rails 403 are moving away from each other, the adjustment slot 407 on the side of the rack rail 403 will slide with the pull rod on one side of the guide block 406, and when the pull rod of the guide block 406 moves from the vertical buffer cavity at one end of the adjustment slot 407 to the inclined cavity of the adjustment slot 407, the inclined cavity of the adjustment slot 407 will squeeze the pull rod and the guide block 406 to ensure that the guide block 406 can be adjusted for lateral displacement, so that the guide block 406 will push the prism pin 405 in the front plate 302, so that the prism pin 405 is guided outward along the hollow gear 404, so that the prism pin 405 will push the lower clamping block 408 and the upper clamping block 409 to press against the surface of the workpiece, and when the lower clamping block 408 and the upper clamping block 409 are transformed from being placed vertically and parallel to being placed in an X-shaped deflected state, it is ensured that the welding fixture can achieve multi-point anti-slip clamping of the workpiece, so that the automatic welding equipment can perform stable welding on the workpiece of the production robot;

[0041] When the pull rod of the guide block 406 moves from the inclined cavity of the adjustment slot 407 to the vertical buffer cavity, the pull rod continues to move along the vertical buffer cavity and will no longer drive the guide block 406 to produce lateral displacement adjustment, but the rack rail 403 continues to drive the adjustment slot 407 to move, which can drive the rack rail 403 to continue to engage with the hollow gear 404, so that the hollow gear 404 will continue to drive the prismatic pin 405, the lower clamp block 408 and the upper clamp block 409 to deflect the angle.

[0042] See also Figure 3 and Figure 4 A worm 101 is rotatably connected to the side of the guide rail 1, an inner cavity is opened on the upper plane of the guide rail 1, and a worm wheel 102 is movably connected in the inner cavity, threaded rods 103 with opposite spiral directions are fixed on both sides of the worm wheel 102, and a slider 201 that slides in matching with the inner cavity is fixed to the bottom of the clamp seat 2, and the slider 201 is threadedly connected to the threaded rod 103.

[0043] When the robot production welding fixture is in use, the worm 101 is twisted forward or reversely by a wrench tool, so that the worm 101 and the worm wheel 102 are meshed in forward and reverse directions, so that the threaded rods 103 on both sides of the worm wheel 102 are threadedly transmitted with the sliders 201 at the bottom of the two clamping seats 2, so that the two clamping seats 2 can move closer to or farther away from each other along the inner cavity of the guide rail 1, so that the spacing between adjacent clamping seats 2 can be adaptively adjusted according to the thickness of the workpiece being produced.

[0044] First embodiment

[0045] See also Figure 5-Figure 7 The upper side of the upper clamping block 409 is connected with a clamping mechanism 5 for clamping the edge of the workpiece; the clamping mechanism 5 includes a traction arm a501 movably connected to the upper clamping block 409, and a connecting piece 502 is rotatably plugged into the upper end of the traction arm a501. The connecting piece 502 passes through one end of the traction arm a501 and is threadedly connected with an anti-loosening pin to prevent the connecting piece 502 from loosening and detaching from the traction arm a501.

[0046] During specific implementation, when the lower clamp block 408 and the upper clamp block 409 are controlled to change from a vertically parallel placement to an X-shaped deflected placement, the upper ends of the two adjacent upper clamp blocks 409 will separate from each other. At this time, the two upper clamp blocks 409 will drive the angle between the two traction arms a501 to adjust from small to large; and when the upper clamp blocks 409 are separated and deflected, they will also move in the direction away from the front plate 302, so the upper clamp blocks 409 will drive the traction arms a501 away from the front plate 302.

[0047] See also Figure 2 , Figure 3 , Figure 5-Figure 7 A horizontal pin 503 runs through the middle of the connecting piece 502, and the end of the horizontal pin 503 away from the front plate 302 is threadedly connected to a pressure rod 504 for vertically clamping the edge of the workpiece, and an inclined groove 6 is provided on the adjacent side of the clamp seat 2 and the upper end of the front plate 302 to slide with the tail of the pressure rod 504.

[0048] In specific implementation, when the horizontal pin 503 in the middle of the connecting member 502 slides downward along the inclined groove 6, the horizontal pin 503 can move along the inclined groove 6 toward the position of the workpiece, and finally the side edge of the workpiece is vertically squeezed by the pressure rod 504 at one end of the horizontal pin 503; by rotating the pressure rod 504 and threading it with the horizontal pin 503, the height of the pressure rod 504 on the horizontal pin 503 can be adjusted to ensure that the height-adjustable pressure rod 504 can adjust the tightness of squeezing and fastening the workpiece;

[0049] See also Figure 6 and Figure 7 A buffer pad is bonded to the bottom end of the pressing rod 504. When in use, the buffer pad at the bottom of the pressing rod 504 is fitted with the surface of the workpiece, so that the pressing rod 504 can have elastic changes and anti-slip effects when pressing the workpiece.

[0050] Second embodiment

[0051] See also Figure 8-Figure 12The upper side of the upper clamping block 409 is connected with a clamping mechanism 5 for clamping the edge of the workpiece; the clamping mechanism 5 includes a traction arm b505 movably connected to the upper clamping block 409, an extrusion piece 506 is inserted at the upper end of the traction arm b505, and the extrusion piece 506 is composed of a spline part, a disc part and a clamping tooth fixed at an equal angle to the surface of the disc part, and the upper end of the traction arm b505 is fastened to the spline part of the extrusion piece 506 by a screw;

[0052] The spline portion of the extrusion member 506 is inserted into the interior of the limit block 507, and the middle part of the limit block 507 is connected to a rotating shaft 508. Toothed portions are provided at both ends of the rotating shaft 508, and the toothed portions of the rotating shaft 508 are meshed with the teeth of the disc portion of the extrusion member 506. A fan-shaped block 509 for elastically fastening the edge of the workpiece is installed on the outer side of the rotating shaft 508, and an avoidance groove 7 for accommodating the fan-shaped block 509 is opened on the adjacent side of the clamping seat 2 and the upper end of the front plate 302.

[0053] In specific implementation, when the two adjacent upper clamping blocks 409 drive the two traction arms b505 to adjust the angle from small to large, the traction arm b505 will drive the spline portion of the extrusion member 506 to rotate, so that the spline portion of the extrusion member 506 can engage with the toothed portion on the rotating shaft 508 through the latch teeth on the surface of the disc portion, so that the traction arm b505 can drive the rotating shaft 508 to complete the angle adjustment when the angle is adjusted, and the rotating shaft 508 can drive the fan-shaped block 509 to rotate out of the avoidance groove 7, so that the arc surface of the fan-shaped block 509 can squeeze and clamp the edge of the workpiece.

[0054] See also Fig.11 and Fig.12 A U-shaped opening is provided on the surface of the sector block 509, and the sector block 509 can be deformed through the U-shaped opening on the surface.

[0055] In specific implementation, when the curved surface of the sector block 509 is pressed against the edge of the workpiece, the sector block 509 can achieve deformation adjustment through the U-shaped opening on the surface. Therefore, the sector block 509 can produce a force storage effect when it continues to move downward to squeeze the edge of the workpiece, thereby enabling the workpiece to be stably pressed against the upper plane of the guide rail 1.

[0056] See also Figure 1-Figure 3 and Fig.13 A base 8 is provided below the guide rail 1, a fixing seat 801 is welded on the top surface of the base 8, and the upper side of the fixing seat 801 is mounted on one side of the guide rail 1; a gas rod a802 is also connected to the upper side of the base 8;

[0057] A swing arm 203 installed with the end of the driving pin 202 is provided on the outer side of the clamp seat 2, and a telescopic rod 204 is connected between the lower ends of the two swing arms 203, and the telescopic rod 204 is connected to the output end of the gas rod a802. When two adjacent clamp seats 2 move closer to or away from each other, the telescopic characteristics of the telescopic rod 204 will enable the distance between the two swing arms 203 to be adaptively adjusted.

[0058] When the robot production welding fixture is in use, the telescopic rod 204 is pushed and pulled by starting the extension and retraction of the gas rod a802, so that the telescopic rod 204 can drive the swing arm 203 to drive the driving pin 202 to rotate in the clamp seat 2. When it is necessary to squeeze the flat part of the workpiece through the lower clamp block 408 and the upper clamp block 409 of the clamping mechanism 4, the gas rod a802 can be extended to drive the telescopic rod 204 and the swing arm 203 to drive the driving pin 202 to rotate forward, so that the clamping mechanism 4 can clamp the workpiece. Conversely, the gas rod a802 is shortened to drive the telescopic rod 204 and the swing arm 203 to drive the driving pin 202 to reverse, so that the clamping mechanism 4 can release the clamping of the workpiece.

[0059] See also Figure 1 and Fig.13 An intermediate seat 9 is rotatably connected between the two bases 8; a push-pull arm 901 is rotatably connected to a corner of the base 8 close to the intermediate seat 9, a gas rod b902 is installed on one side of the intermediate seat 9, and the output end of the gas rod b902 is connected to the hinge shaft of the two push-pull arms 901.

[0060] When the robot production welding fixture is in use, the gas rod b902 pulls the articulated shaft to make the two push-pull arms 901 unfold in an "I" shape, thereby ensuring that the two bases 8 are distributed in parallel, and then the two parallel guide rails 1 and the clamp seat 2 can be controlled to limit the placement of the long straight workpiece of the production robot; when the gas rod b902 pushes the articulated shaft to rotate the two push-pull arms 901, the two bases 8 and the middle seat 9 can be controlled to produce an angular deflection, and then the two guide rails 1 and the clamp seat 2 can be controlled to produce an angle change, which is convenient for limiting the placement of the curved workpiece of the production robot; after the base 8 completes the angle adjustment on both sides of the middle seat 9, the matching bolts can be used to penetrate the base 8 and the specified position for installation, ensuring that the welding fixture can be stably placed after the angle is adjusted.

[0061] To summarize, the workpiece of the production robot is placed between two adjacent clamping seats 2, and the telescopic rod 204 is pushed and pulled by starting the extension of the gas rod a802, so that the telescopic rod 204 can drive the swing arm 203 to drive the driving pin 202 to rotate in the clamping seat 2, thereby driving the lower clamp block 408 and the upper clamp block 409 of the clamping mechanism 4 to squeeze the planar part of the workpiece at multiple points, so that the welding fixture can stably clamp the workpiece produced by the robot, and finally use plasma welding equipment to weld and assemble the thick metal workpieces together to obtain a preliminarily processed robot shell. The contents not described in detail in this description belong to the prior art known to professional and technical personnel in this field.

[0062] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding fixture for robot production, comprising a guide rail (1) and a clamping seat (2) slidably connected to both sides of the guide rail (1); characterized in that: A mounting assembly (3) is embedded on the side of the two clamping seats (2) close to each other, and the mounting assembly (3) is composed of a back plate (301) and a front plate (302) spliced ​​together, and the back plate (301) and the front plate (302) are mounted on the clamping seats (2) by bolts, and a T-shaped driving pin (202) penetrates the middle of the clamping seats (2), the back plate (301) and the front plate (302), and an arc groove eccentrically arranged with the driving pin (202) is opened on the side of the driving pin (202) close to the front plate (302), and a clamping mechanism (4) for multi-point extrusion of a workpiece is arranged on the front plate (302), and the clamping mechanism (4) comprises A straight slide groove (401) and a through opening (402) are provided inside the front plate (302); a rack rail (403) is symmetrically connected inside the straight slide groove (401); and adjustment grooves (407) are provided on both sides of the rack rail (403); a hollow gear (404) meshing with the rack rail (403) is rotatably connected inside the through opening (402); a prism pin (405) is inserted in the middle of the hollow gear (404); and one end of the prism pin (405) is movably connected to a guide block (406) inside the front plate (302); and a pull rod connected to the adjustment groove (407) is provided on one side of the guide block (406); The prism pin (405) near the lower side of the front plate (302) has a lower clamping block (408) fixed at one end extending out of the through opening (402), and the prism pin (405) near the upper side of the front plate (302) has an upper clamping block (409) fixed at one end extending out of the through opening (402), and the upper side of the upper clamping block (409) is connected to a clamping mechanism (5) for clamping the edge of a workpiece.

2. A robot production welding fixture according to claim 1, characterized in that: A worm (101) is rotatably connected to the side of the guide rail (1), an inner cavity is formed on the upper plane of the guide rail (1), and a worm wheel (102) is movably connected to the inner cavity, threaded rods (103) with opposite spiral directions are fixed on both sides of the worm wheel (102), and a sliding block (201) that slides in matching with the inner cavity is fixed on the bottom of the clamp seat (2), and the sliding block (201) is threadedly connected to the threaded rod (103).

3. A robot production welding fixture according to claim 1, characterized in that: A cylindrical lever is integrally formed on the surface of the rack rail (403) away from the back plate (301), and the cylindrical lever is slidably connected to the arc groove on one side of the driving pin (202).

4. A robot production welding fixture according to claim 1, characterized in that: The clamping mechanism (5) comprises a traction arm a (501) movably connected to the upper clamping block (409); a connecting piece (502) is rotatably plugged into the upper end of the traction arm a (501); a horizontal pin (503) penetrates the middle of the connecting piece (502); an end of the horizontal pin (503) away from the front plate (302) is threadedly connected to a pressure rod (504) for vertically clamping the edge of the workpiece; a buffer pad is bonded to the bottom end of the pressure rod (504); and an inclined groove (6) is provided on the adjacent side of the clamping seat (2) and the upper end of the front plate (302) to slide with the tail of the pressure rod (504).

5. The welding fixture for robot production according to claim 1, characterized in that: The fastening mechanism (5) comprises a traction arm b (505) movably connected to the upper clamping block (409); an extrusion piece (506) is inserted into the upper end of the traction arm b (505); the extrusion piece (506) is composed of a spline portion, a disc portion, and latching teeth fixed to the surface of the disc portion at equal angles; the upper end of the traction arm b (505) is fastened to the spline portion of the extrusion piece (506) by means of a screw; The spline portion of the extrusion member (506) is inserted into the interior of the limit block (507); a rotating shaft (508) is connected to the middle of the limit block (507); toothed portions are provided at both ends of the rotating shaft (508); the toothed portions of the rotating shaft (508) mesh with the teeth of the disc portion of the extrusion member (506); a fan-shaped block (509) for elastically fastening the edge of a workpiece is installed on the outer side of the rotating shaft (508); and an avoidance groove (7) for accommodating the fan-shaped block (509) is provided on the adjacent side of the clamp seat (2) and the upper end of the front plate (302).

6. The welding fixture for robot production according to claim 1, characterized in that: A base (8) is provided below the guide rail (1), a fixing seat (801) is welded to the top surface of the base (8), and the upper side of the fixing seat (801) is mounted on one side of the guide rail (1).

7. A robot production welding fixture according to claim 6, characterized in that: The upper side of the base (8) is also connected to a gas rod a (802).

8. A robot production welding fixture according to claim 7, characterized in that: A swing arm (203) mounted on the end of the driving pin (202) is arranged on the outer side of the clamp seat (2), a telescopic rod (204) is connected between the lower ends of the two swing arms (203), and the telescopic rod (204) is connected to the output end of the gas rod a (802).

9. A robot production welding fixture according to claim 6, characterized in that: An intermediate seat (9) is rotatably connected between the two bases (8).

10. A robot production welding fixture according to claim 9, characterized in that: A push-pull arm (901) is rotatably connected to a corner of the base (8) close to the middle seat (9), a gas rod b (902) is installed on one side of the middle seat (9), and the output end of the gas rod b (902) is connected to the hinge shafts of the two push-pull arms (901).

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