A welding fixture for robot production

Abstract

The present invention discloses a welding fixture for robot production, which relates to the technical field of welding fixtures and includes a guide rail and a clamping seat slidably connected to both sides of the guide rail; a mounting assembly is embedded on the side where the two clamping seats are close to each other, and a clamping mechanism for multi-point extrusion of the workpiece is provided on the front plate. In the welding fixture for robot production, when the lower clamping block and the upper clamping block of the clamping mechanism are controlled to deflect and unfold in an X-shaped state, the lower clamping block and the upper clamping block are also ejected by the prismatic pin, so that the flat part of the robot production workpiece can be clamped at multiple points laterally by the unfolded lower clamping block and the upper clamping block, and the upper clamping block can cooperate with the clamping mechanism to clamp and extrude the edge of the workpiece away from the upper plane of the guide rail when separated and unfolded, so as to prevent vibration and offset when welding the workpiece. At the same time, the adjustable base is used 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.

Description

Technical Field

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

[0002] Robots are intelligent machines capable of semi- or fully autonomous work, typically possessing basic features such as perception, decision-making, and execution. They can assist or even replace humans in completing dangerous, arduous, and complex tasks, improving work efficiency and quality. Existing robots are required to perform welding processes during production and manufacturing.

[0003] In the existing technology, robotic 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 existing technology can easily cause the workpiece welding to shift when the equipment vibrates. Therefore, we propose a welding fixture for robotic production. Summary of the Invention

[0004] The purpose 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 solution: a welding fixture for robot production, comprising a guide rail and a clamping seat slidably connected to both sides of the guide rail;

[0006] The two clamping seats are embedded with a mounting assembly on one side 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 installed with the clamping seat by bolts, and a T-shaped driving pin is passed 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 to 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 the guide block inside the front plate, and a pull rod connected to the adjustment slot is provided on one side of the guide block;

[0007] The prismatic 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 prismatic 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 to 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 shifting rod is integrally formed on the surface of the rack rail away from the back plate, and the cylindrical shifting rod 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, the middle of the connecting piece is penetrated by a horizontal pin, 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, the bottom end of the pressure rod is bonded with a buffer pad, and the adjacent side of the clamp seat and the upper end of the front plate is provided with an oblique groove that slides with the tail of the pressure rod.

[0011] Preferably, the fastening mechanism includes a traction arm b movably connected to the upper clamping block, the upper end of the traction arm b is plugged with an extrusion piece, and the extrusion piece is composed of a spline portion, a disc portion, and latches fixed at equal angles 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, the middle part of the limit block is connected to a rotating shaft, both ends of the rotating shaft are provided with toothed portions, and the toothed portions of the rotating shaft are engaged with the teeth of the disc portion of the extrusion piece, and 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 the 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 shaft 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 clamping block and the upper clamping block of the robot production control clamping mechanism are deflected and unfolded in an X-shaped state, the lower clamping block and the upper clamping block will also be pushed out by the prismatic pin, so that the flat part of the robot production workpiece can be clamped at multiple points laterally through the unfolded lower clamping block and the upper clamping block, and the upper clamping block can cooperate with the fastening mechanism to fasten and squeeze the edge of the workpiece away from the upper plane of the guide rail when separated and unfolded, 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 This is a schematic diagram of the three-dimensional structure of the present invention without clamping the workpiece;

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

[0021] Figure 3 A schematic diagram of a three-dimensional cross-section structure of the guide rail, clamping seat and clamping mechanism combined and connected in the present invention;

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

[0023] Figure 5 This is a schematic diagram of a three-dimensional exploded structure of the clamping base and the clamping mechanism in combination with each other according to the first embodiment of the present invention;

[0024] Figure 6 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 perspective cross-sectional view of the front plate and the fastening mechanism of the first embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the clamping base and the clamping mechanism in combination according to the second embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of a three-dimensional exploded structure of the combined connection between the clamping base and the clamping mechanism according to the second embodiment of the present invention;

[0028] Figure 10 A schematic diagram of the three-dimensional structure of the front plate and the fastening mechanism according to the second embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the three-dimensional structure of a sector block according to a second embodiment of the present invention;

[0030] Figure 12A schematic diagram of the three-dimensional structure of an extrusion component according to a second embodiment of the present invention;

[0031] Figure 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 gear; 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; 402. Through port; 403. Rack rail; 404. Hollow gear; 405. Prismatic pin; 406. Guide block; 407. Adjustment slot; 408. Lower clamping block; 409. Upper clamping block; 5. Fastening mechanism; 501. Pulling arm a; 502. Connecting piece; 503. Horizontal pin; 504. Pressure rod; 505. Pulling arm b; 506. Extrusion piece; 507. Limiting block; 508. Rotating axis; 509. Fan-shaped block; 6. Inclined groove; 7. Avoidance groove; 8. Base; 801. Fixed seat; 802. Gas rod a; 9. Intermediate seat; 901. Push-pull arm; 902. Gas rod b. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 5 、 Figure 9 and Figure 13 The present invention provides a technical solution: a welding fixture for robot production, comprising a guide rail 1 and a clamping base 2 slidably connected to both sides of the guide rail 1; a mounting assembly 3 is inlaid on one side of the two clamping bases 2 close to each other, and the mounting assembly 3 is composed of a back plate 301 and a front plate 302, and the back plate 301 and the front plate 302 are mounted to the clamping base 2 by bolts. When in use, the back plate 301 and the front plate 302 are mounted to the clamping base 2 by bolts, which facilitates quick assembly or disassembly of the clamping base 2 and the mounting assembly 3.

[0035] See also Figure 1-Figure 7 、 Figure 9 and Figure 10The clamping seat 2, the back plate 301 and the middle of the front plate 302 are penetrated by a T-shaped driving pin 202, and the driving pin 202 is provided with an arc groove eccentrically arranged with the driving pin 202 on the side close to the front plate 302. The front plate 302 is provided with a clamping mechanism 4 for multi-point extrusion of the workpiece. The clamping mechanism 4 includes a straight slide groove 401 and a through port 402 opened inside the front plate 302. The interior of the straight slide groove 401 is symmetrically connected to a rack rail 403, and two sides of the rack rail 403 are provided with a Adjusting slot 407, a hollow gear 404 meshing with the rack rail 403 is rotatably connected in the through-port 402, 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 the guide block 406 inside the front plate 302, the prismatic pin 405 near the lower side of the front plate 302 is fixed with a lower clamping block 408 at the end extending out of the through-port 402, and the prismatic pin 405 near the upper side of the front plate 302 is fixed with an upper clamping block 409 at the end extending out of the through-port 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 sliding groove 401, and the sliding rack rail 403 will engage 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 、 Figure 9 and Figure 10 An annular notch is provided 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 notch 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 detaching from the through-port 402 and ensure that the hollow gear 404 can always engage with the rack rail 403.

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

[0040] When the two rack rails 403 are in the process of 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. 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 to a lateral displacement. As a result, 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. Therefore, 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. When the lower clamping block 408 and the upper clamping block 409 are changed from being placed in a vertical parallel state 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, which is convenient for the automatic welding equipment to 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 The side of the guide rail 1 is rotatably connected to a worm 101, the upper plane of the guide rail 1 is provided with an inner cavity, and a worm wheel 102 is movably connected in the inner cavity, and threaded rods 103 with opposite spiral directions are fixed on both sides of the worm wheel 102. A slider 201 that slides in matching with the inner cavity is fixed at the bottom of the clamping 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 engaged in forward and reverse directions, so that the threaded rods 103 on both sides of the worm wheel 102 are threadedly driven 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 away from each other along the inner cavity of the guide rail 1, which is convenient for adaptively adjusting the spacing between adjacent clamping seats 2 according to the thickness of the workpiece to be produced.

[0044] First embodiment

[0045] See also Figure 5-Figure 7 The upper side of the upper clamping block 409 is connected to 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 the upper end of the traction arm a501 is rotatably plugged with a connecting piece 502, and the connecting piece 502 passes through one end of the traction arm a501 and is threadedly connected to 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 clamping block 408 and the upper clamping 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 clamping blocks 409 will separate from each other. At this time, the two upper clamping blocks 409 will drive the angle between the two traction arms a501 to adjust from small to large; and when the upper clamping block 409 is separated and deflected, it will also move in the direction away from the front plate 302, so the upper clamping block 409 will drive the traction arm a501 away from the front plate 302.

[0047] See also Figure 2 、 Figure 3 、 Figure 5-Figure 7 A horizontal pin 503 passes 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 fastening the edge of the workpiece. The adjacent side of the clamping seat 2 and the upper end of the front plate 302 is provided with an inclined groove 6 that slides with the tail of the pressure rod 504.

[0048] In a specific implementation, when the horizontal pin 503 in the middle of the connecting member 502 slides downward along the inclined slot 6, the horizontal pin 503 can move along the inclined slot 6 toward the position of the workpiece, and finally the pressure rod 504 at one end of the horizontal pin 503 vertically squeezes the side edge of the workpiece; 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, which enables the pressing rod 504 to have elastic changes and anti-slip effects when pressing the workpiece.

[0050] Second embodiment

[0051] See also Figures 8-12The upper side of the upper clamping block 409 is connected to 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, and an extrusion piece 506 is inserted at the upper end of the traction arm b505. The extrusion piece 506 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. The upper end of the traction arm b505 is fastened to the spline portion of the extrusion piece 506 by a screw;

[0052] The spline portion of the extrusion piece 506 is inserted into the interior of the limit block 507, and the middle part of the limit block 507 is connected to the 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 engaged with the teeth of the disc portion of the extrusion piece 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 provided on the adjacent side of the clamping seat 2 and the upper end of the front plate 302.

[0053] During 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 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 Figure 11 and Figure 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 fan-shaped block 509 is pressed against the edge of the workpiece, the fan-shaped block 509 can achieve deformation adjustment through the U-shaped opening opened on the surface. Therefore, the fan-shaped 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 Figure 13 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; a gas rod a802 is also connected to the upper side of the base 8;

[0057] A swing arm 203 installed on the outer side of the clamping seat 2 is provided with a swing arm 203 installed with the end of the driving pin 202. 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 clamping 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 clamping seat 2. When it is necessary to squeeze the flat part of the workpiece through the lower clamping block 408 and the upper clamping 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 Figure 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, and 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 clamping 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 clamping 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 sum up, 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 drive pin 202 to rotate in the clamping seat 2, thereby driving the lower clamping block 408 and the upper clamping block 409 of the clamping mechanism 4 to squeeze the planar part of the workpiece at multiple points, making it convenient for the welding fixture to stably clamp the workpiece produced by the robot, and finally, the plasma welding equipment can be used to weld and assemble the heavy metal workpieces together to obtain a preliminarily processed robot shell. The content not described in detail in this description belongs to the existing technology 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 scope of protection 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 one side of the two clamping seats (2) close to each other. 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. A T-shaped driving pin (202) is passed through 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). A clamping mechanism (4) for multi-point extrusion of a workpiece is provided on the front plate (302). The clamping mechanism (4) includes 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 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); 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 slider (201) that slides in matching with the inner cavity is fixed to the bottom of the clamping seat (2), and the slider (201) is threadedly connected to the threaded rod (103).

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

4. The robot production welding fixture according to claim 1, characterized in that: The clamping mechanism (5) includes a traction arm a (501) movably connected to the upper clamping block (409), the upper end of the traction arm a (501) is rotatably plugged with a connecting piece (502), the middle of the connecting piece (502) is penetrated by a horizontal pin (503), 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, the bottom end of the pressure rod (504) is bonded with a buffer pad, and the adjacent side of the clamping seat (2) and the upper end of the front plate (302) is provided with an inclined groove (6) that slides 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 a screw; The spline portion of the extrusion member (506) is inserted into the interior of the limit block (507), and the middle of the limit block (507) is connected to a rotating shaft (508). Both ends of the rotating shaft (508) are provided with toothed portions, and the toothed portions of the rotating shaft (508) are engaged 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 provided on the adjacent side of the clamping 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. The 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 provided on the outer side of the clamping 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. The robot production welding fixture according to claim 6, characterized in that: An intermediate seat (9) is rotatably connected between the two bases (8).

10. The welding fixture for robot production according to claim 9, characterized in that: A push-pull arm (901) is rotatably connected to a corner of the base (8) near 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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