An electrode welding jig

Abstract

This application belongs to the field of welding technology, and specifically relates to an electrode welding fixture, which includes a base. A slide rail is provided on the base. One end of the slide rail is provided with a first electrode seat. A second electrode seat and a rod clamp are slidably arranged on the slide rail. The rod clamp is between the first electrode seat and the second electrode seat. An angle conversion seat is provided on each side of the rod clamp between the first electrode seat and the second electrode seat. The angle conversion seat is slidably connected between the two ends of the slide rail. A ring clamp is provided on one side of each angle conversion seat facing the rod clamp. Each of the first electrode seat and the second electrode seat is electrically connected to a ring clamp through a universal electrode joint. A first linear driver for driving the second electrode seat and a second linear driver for driving the rod clamp are respectively provided on the base. The driving direction of the linear driver is parallel to the slide rail; this application solves the problem that the current fixture for clamping the shaft sleeve and the rod does not have the function of adjusting the angle between the planes where the circles of the two shaft sleeves are located.

Description

Technical Field

[0001] This application belongs to the technical field of welding, and specifically relates to an electrode welding jig. Background Art

[0002] During the welding process, products with different shapes and different requirements will be encountered. In the case of welding two bushings to both ends of a rod, according to different standards, the angle requirements between the cross-sections of the two bushings are also different; therefore, the requirements for the jig used to fix the product are very high. In the traditional welding method, two jigs are used. First, one bushing and the rod are each clamped by a jig, and then welded and fixed; then, the welded bushing and rod are clamped by a jig, and according to the requirements, the other bushing is adjusted so that the plane where the circle of the other bushing is located conforms to the preset before the plane where the circle of the bushing welded with the rod is located. After that, the other bushing is clamped and fixed by another jig, and then welded; such a method requires two clamps, that is, one clamping is performed when the first bushing and the rod are welded, disassembled after welding, and then another clamping is performed when the second bushing and the rod are welded, thus making the working steps cumbersome and reducing the welding efficiency. Summary of the Invention

[0003] The purpose of this application is to design an electrode welding jig by using a slide rail in cooperation with an electrode seat and an angle conversion seat according to the shortcomings of the existing technology. The jig can automatically fit the bushing and the rod together and can adjust the angle between the planes where the circles of the two bushings are located, achieving the effect of welding the two bushings to both ends of the rod with one clamping, and solving the problem that the existing jig for clamping the bushing and the rod does not have the function of adjusting the angle between the planes where the circles of the two bushings are located.

[0004] The technical solution adopted by this application is as follows:

[0005] An electrode welding jig includes a base. A slide rail is provided on the base. One end of the slide rail is provided with a first electrode seat. A second electrode seat and a rod clamp are slidably provided on the slide rail. An electrode external joint is provided on the rod clamp. The rod clamp is between the first electrode seat and the second electrode seat. One angle conversion seat is provided on each side of the rod clamp between the first electrode seat and the second electrode seat. The angle conversion seat is slidably connected between the two ends of the slide rail. A ring clamp is provided on one side of each angle conversion seat facing the rod clamp. Each of the first electrode seat and the second electrode seat is electrically connected to one of the ring clamps through a universal electrode joint. A first linear driver for driving the second electrode seat and a second linear driver for driving the rod clamp are respectively provided on the base. The driving direction of the linear driver is parallel to the slide rail.

[0006] Preferably, the angle conversion base includes a first base body, a rotating shaft, a rack, a gear, a lifter, and a sliding seat. The first base body is fixedly arranged on the sliding seat through the lifter. The sliding seat is slidably connected between the two ends of the slide rail. The rotating shaft is arranged on the first base body. The axis of the rotating shaft is in the same vertical plane as the axis of the slide rail. The rotating shaft penetrates through both sides of the first base body. The outer circumferential surface of the rotating shaft is connected to the first base body through a bearing. A gear is coaxially and fixedly sleeved on the outer circumferential surface of the rotating shaft. One end of the rotating shaft facing the rod clamp is fixedly connected with a ring clamp outside the first base body. A rack for driving the gear is arranged on the first base body.

[0007] Preferably, the gear is an incomplete gear. The gear includes teeth and a tooth ring. A number of teeth are arranged along the circumferential direction on the tooth ring. The central angle of the projection of the whole formed by all the teeth on the plane where the tooth ring is located is a flat angle. On the outer circumferential surface of the tooth ring, a stop block is radially arranged at each end of the queue formed by all the teeth. On the base, a first telescopic cylinder for cooperating with the stop block is arranged on each side of the rotating shaft. The two first telescopic cylinders are parallel to each other and perpendicular to the rotating shaft. During the rotation of the gear, each of the two stop blocks is within the stroke range of one of the first telescopic cylinders.

[0008] Preferably, the ring clamp includes a clamp body, a placement groove, and a gripper. The clamp body is provided with a placement groove. The placement groove has openings on both the side of the clamp body facing the rod clamp and the side of the clamp body facing away from the base. A gripper extending into the placement groove is arranged on the clamp body.

[0009] Preferably, the gripper includes a second telescopic cylinder, a positioning through hole, and an insulating layer. The clamp body is provided with a positioning through hole communicating with the placement groove. The axis of the positioning through hole is perpendicular to the two opposite side walls of the placement groove. The insulating layer is arranged on the inner surface of the positioning through hole. The second telescopic cylinder is arranged on the outer side wall of the clamp body. The piston rod of the second telescopic cylinder is coaxial with the positioning through hole. The placement groove is within the stroke range of the piston rod of the second telescopic cylinder.

[0010] Preferably, the lifter includes a first inclined surface, a second inclined surface, a through groove, a threaded hole, and a locking bolt. The first inclined surface is provided on the lower surface of the first seat body, and the second inclined surface that cooperates with the first inclined surface is provided on the upper surface of the sliding seat. The first seat body is provided with the through groove that penetrates the upper and lower surfaces of the fixture body. The threaded hole is provided on the second inclined surface, and the axis of the threaded hole is perpendicular to the upper surface of the base. The first seat body is fixedly connected to the sliding seat by the locking bolt that passes through the through groove and extends into the threaded hole. One end of the through groove faces the rod fixture, and the other end faces away from the rod fixture. The end of the first inclined surface facing the rod fixture is higher than the end of the first inclined surface facing away from the rod fixture; the end of the second inclined surface facing the rod fixture is higher than the end of the second inclined surface facing away from the rod fixture.

[0011] Preferably, a sliding groove that cooperates with the first inclined surface is provided on the first inclined surface of the first seat body. Both ends of the sliding groove extend outside the first seat body. The sliding groove is parallel to the sliding rail, and a convex rib that cooperates with the sliding groove is provided on the second inclined surface.

[0012] Preferably, an arc-shaped groove coaxial with the positioning through hole is provided on the inner bottom wall of the placement groove. The axis of the arc-shaped groove is perpendicular to the sliding rail.

[0013] Preferably, the universal electrode connector includes a spherical groove and a spherical protrusion. The spherical groove cooperates with the spherical protrusion. The spherical protrusion is fixedly connected to the side of the rotating shaft facing away from the rod fixture. Spherical grooves are provided on both the side of the first electrode seat facing the rod fixture and the side of the second electrode seat facing the rod fixture. The line connecting the centers of the virtual spheres where the spherical grooves are located and the center of the virtual sphere where the spherical protrusion is located is collinear with the axis of the rotating shaft.

[0014] Preferably, the rod fixture includes a first clamping hand, a second clamping hand, a symmetric mover, and a second seat body. The first clamping hand and the second clamping hand are respectively arranged on both sides of the sliding rail on the second seat body. The first clamping hand and the second clamping hand are controlled and connected by a symmetric mover. The electrode outer connector is provided on the first clamping hand.

[0015] Preferably, the symmetric mover includes a U-shaped block, a first through hole, and a sliding rod. The U-shaped block is fixedly arranged on the second seat body. The plane where the U-shape of the U-shaped block is located is perpendicular to both the sliding rail and the upper surface of the base. The first clamping hand and the second clamping hand are respectively arranged on the two inner side walls of the U-shaped block. A first through hole penetrating the U-shaped block is provided on the bottom wall of the U-shaped block. The axis of the first through hole is perpendicular to the sliding rail and parallel to the upper surface of the base. The sliding rod is coaxially arranged in the first through hole. The length of the sliding rod is greater than the distance between the two outer side walls of the U-shape of the U-shaped block. One end of the sliding rod fixedly arranges a telescopic device outside the U-shaped block, and the other end fixedly arranges a connecting block outside the U-shaped block. The connecting block is fixedly connected with the second clamping hand. A second through hole is provided on the side wall of the U-shaped block facing away from the second clamping hand. The axis of the second through hole is parallel to the axis of the first through hole. The execution end of the telescopic device is fixedly connected with one end of the sliding rod. The other end of the sliding rod penetrates the second through hole and is fixedly connected with the first clamping hand inside the U-shaped block. The first clamping hand is connected with one end of the elastic member. The other end of the elastic member is fixedly connected between the first clamping hand and the telescopic device on the U-shaped block.

[0016] Preferably, a plurality of first clamping claws are arranged on the first clamping hand along the axis direction of the sliding rail, and a plurality of second clamping claws are arranged on the second clamping hand along the axis direction of the sliding rail. The first clamping claws cooperate with the second clamping claws.

[0017] Preferably, a sliding rail parallel container is arranged between the first clamping hand and the second clamping hand on the rod body clamp. The sliding rail parallel container is located between two adjacent first clamping claws.

[0018] Preferably, the sliding rail parallel container includes a support block. The support block is arranged on the inner bottom wall of the U-shaped block. A V-shaped groove with an upward facing mouth is provided on the support block. The V-shaped groove is symmetric about the axis of the sliding rail.

[0019] Preferably, the first linear driver is a fourth telescopic cylinder. An accommodation cavity is provided on the second electrode seat on the side facing away from the first electrode seat. The opening of the accommodation cavity faces away from the first electrode seat. The axis of the accommodation cavity is coaxial with the axis of the piston rod of the fourth telescopic cylinder. A pressure sensor is arranged in the accommodation cavity.

[0020] Preferably, a notch communicating with the inside of the accommodation cavity is provided on the side wall of the accommodation cavity. One end of the notch is on the side wall of the accommodation cavity and near the bottom wall of the accommodation cavity, and the other end extends towards the opening direction of the accommodation cavity and extends outside the accommodation cavity.

[0021] Preferably, the second linear driver is a third telescopic cylinder, and the free end of the piston rod of the third telescopic cylinder is fixedly connected to the rod clamp.

[0022] The beneficial effects of this application are as follows:

[0023] 1. This application designs an electrode welding fixture by using a slide rail in combination with an electrode seat and an angle conversion seat. It can automatically fit the bushing and the rod together and can adjust the angle between the planes where the circles of the two bushings are located, achieving the effect of welding the two bushings to both ends of the rod with a single clamping, and solving the problem that the existing fixture for clamping the bushing and the rod does not have the function of adjusting the angle between the planes where the circles of the two bushings are located.

[0024] 2. The setting of the lifter in this application can adjust the height of the angle conversion seat on the base, enabling the ring clamp to better cooperate with the rod clamp; at the same time, using the rack as the driving part to drive the rotation of the gear is convenient for control. That is to say, the circumferential speed of the gear is converted into a linear speed, so that the rotation of the gear can be controlled by a linear drive mechanism, such as a cylinder, a hydraulic cylinder, a rodless cylinder, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of this application;

[0026] Figure 2 is Figure 1 an enlarged view of part A in

[0027] Figure 3 is a relationship diagram between the first electrode seat and the ring clamp in this application;

[0028] Figure 4 is an exploded view of the angle conversion seat in this application;

[0029] Figure 5 is Figure 4 a schematic structural diagram of the bottom of this application;

[0030] Figure 6 is a schematic structural diagram of the inside of the first seat body in this application;

[0031] Figure 7 is a relationship diagram between the rack and the gear ring in this application;

[0032] Figure 8 is a schematic structural diagram of the ring clamp in this application;

[0033] Figure 9 is a schematic structural diagram of the rod clamp in this application;

[0034] Figure 10Schematic diagram of the top of the rod clamp in this application;

[0035] Figure 11 Exploded view of the rod clamp in this application;

[0036] Figure 12 Part drawing of the U-shaped block in this application;

[0037] Figure 13 Schematic diagram of the structure of the accommodation cavity in this application;

[0038] Figure 14 Cross-sectional view of the accommodation cavity after installing a pressure sensor in this application.

[0039] Wherein, 1. Base; 2. Slide rail; 3. First electrode seat; 4. Second electrode seat; 5. First seat body; 6. Rotating shaft; 7. Rack; 8. Gear ring; 9. Ratchet; 10. Stop block; 11. First telescopic cylinder; 12. Fixture body; 13. Slide block; 14. Placing groove; 15. Second telescopic cylinder; 16. Positioning through hole; 17. Insulating layer; 18. Fifth telescopic cylinder; 19. First inclined surface; 20. Second inclined surface; 21. Through groove; 22. Threaded hole; 23. Locking bolt; 24. Chute; 25. Convex rib; 26. Arc groove; 27. Spherical groove; 28. Spherical protrusion; 29. U-shaped block; 30. First through hole; 31. Sliding rod; 32. Second seat body; 33. Second through hole; 34. Elastic member; 35. First clamping hand; 36. Second clamping hand; 37. First clamping claw; 38. Second clamping claw; 39. Support block; 40. V-shaped groove; 41. Third telescopic cylinder; 42. Accommodation cavity; 43. Pressure sensor; 44. Notch; 45. Fourth telescopic cylinder; 46. Telescopic device; 47. Connecting block. Detailed implementation manners

[0040] Refer to Figure 1-14 , an electrode welding jig, including a base 1, a slide rail 2 is provided on the base 1, a first electrode seat 3 is provided at one end of the slide rail 2, a second electrode seat 4 and a rod clamp are slidably provided on the slide rail 2, an electrode external joint is provided on the rod clamp, the rod clamp is between the first electrode seat 3 and the second electrode seat 4, an angle conversion seat is provided on each side of the rod clamp between the first electrode seat 3 and the second electrode seat 4, the angle conversion seat is slidably connected between the two ends of the slide rail 2, a ring clamp is provided on one side of each angle conversion seat facing the rod clamp, each of the first electrode seat 3 and the second electrode seat 4 is electrically connected to one of the ring clamps through a universal electrode joint, a first linear driver for driving the second electrode seat 4 and a second linear driver for driving the rod clamp are respectively provided on the base 1, and the driving direction of the linear driver is parallel to the slide rail 2.

[0041] In this embodiment, during use, two bushings are respectively conveyed to two ring body jigs through a feeding device (not shown in the figure), and at the same time, the rod body is conveyed to the rod body jig through the feeding device. Then, through the adjustment of the first linear driver and the second linear driver, the bushings on the two ring body jigs are in close contact with both ends of the rod body on the rod body jig. Then, the angle conversion seat adjusts the angles of the two ring body jigs so that the included angle between the planes where the circles of the bushings on the two ring body jigs are located conforms to a preset value. Finally, the first electrode seat 3, the second electrode seat 4, and the electrode external joint are all powered on, so as to weld the bushing and the rod body together. Since the second electrode seat 4, the rod body jig, and the angle conversion seat are all slidably arranged on the slide rail 2, therefore, this technical solution can be applied to the welding of rod bodies and bushings of different lengths; in this application, it is all automated, and the rotation between the two ring body jigs driving the bushings will not affect each other, solving the problem that the current jig for clamping bushings and rods does not have the function of adjusting the included angle between the planes where the circles of the two bushings are located.

[0042] As a preferred method, the angle conversion seat includes a first seat body 5, a rotating shaft 6, a rack 7, a gear, a lifter, and a slide seat 13. The first seat body 5 is fixedly arranged on the slide seat 13 through the lifter. The slide seat 13 is slidably connected between the two ends of the slide rail 2. The rotating shaft 6 is arranged on the first seat body 5. The axis of the rotating shaft 6 is in the same vertical plane as the axis of the slide rail 2. The rotating shaft 6 penetrates through both sides of the first seat body 5. The outer circumferential surface of the rotating shaft 6 is connected to the first seat body 5 through a bearing. The gear is coaxially and fixedly sleeved on the outer circumferential surface of the rotating shaft 6. One end of the rotating shaft 6 facing the rod body jig is fixedly connected to the ring body jig outside the first seat body 5. The first seat body 5 is provided with a rack 7 for driving the gear. The setting of the lifter can adjust the height of the angle conversion seat on the base 1, so that the ring body jig can better cooperate with the rod body jig; at the same time, the rack 7 is used as the driving part to drive the rotation of the gear, which is convenient to control. That is to say, the speed in the circumferential direction of the gear is converted into the speed in the linear direction, so that the rotation of the gear can be controlled by a linear drive mechanism, such as a cylinder, a hydraulic cylinder, a rodless cylinder, etc.

[0043] As a preferred method, since there is a gap between the teeth 9 on the gear and the teeth on the rack 7, therefore, in order to accurately control the rotation angle of the gear, such as Figure 7As shown, the gear is an incomplete gear. The gear includes teeth 9 and a tooth ring 8. A number of teeth 9 are arranged in a circumferential direction on the tooth ring 8. The central angle of the projection of the whole formed by all the teeth 9 on the plane where the tooth ring 8 is located is a flat angle. On the outer circumferential surface of the tooth ring 8, a stop block 10 is radially provided at each end of the queue formed by all the teeth 9. On the base 1, a first telescopic cylinder 11 that cooperates with the stop block 10 is provided on each side of the rotating shaft 6. The two first telescopic cylinders 11 are parallel to each other and both perpendicular to the rotating shaft 6. During the rotation of the gear, each of the two stop blocks 10 is within the stroke range of one of the first telescopic cylinders 11. After such a setting, the rotation angle of the gear can be accurately fine-tuned and controlled by the extension and retraction of the two first telescopic cylinders 11.

[0044] As a preferred method, the ring fixture includes a fixture body 12, a placement groove 14, and a gripper. The fixture body 12 is provided with a placement groove 14. The placement groove 14 has openings on both the side of the fixture body 12 facing the rod fixture and the side of the fixture body 12 facing away from the base 1. The fixture body 12 is provided with a gripper extending into the placement groove 14. The provided placement groove 14 is used for placing the bushing.

[0045] As a preferred method, the gripper includes a second telescopic cylinder 15, a positioning through hole 16, and an insulating layer 17. The fixture body 12 is provided with a positioning through hole 16 communicating with the placement groove 14. The axis of the positioning through hole 16 is perpendicular to the two opposite side walls of the placement groove 14. The insulating layer 17 is provided on the inner surface of the positioning through hole 16. The second telescopic cylinder 15 is provided on the outer side wall of the fixture body 12. The piston rod of the second telescopic cylinder 15 is coaxial with the positioning through hole 16. The placement groove 14 is within the stroke range of the piston rod of the second telescopic cylinder 15. Since when welding the bushing and the rod body, one end of the rod body is radially welded on the outer circumferential surface of the bushing, therefore, through the provided second telescopic cylinder 15 and positioning through hole 16, the bushing can be fixed in the placement groove 14 and ensure that the axis of the bushing is perpendicular to the axis of the slide rail 2. During use, it is only necessary to set the rod fixture to hold the rod body parallel to the slide rail 2 to obtain that the axis of the bushing is perpendicular to the rod body.

[0046] As a preferred embodiment, the lifter includes a first inclined surface 19, a second inclined surface 20, a through groove 21, a threaded hole 22, and a locking bolt 23. The first inclined surface 19 is disposed on the lower surface of the first seat body 5, and the second inclined surface 20 that cooperates with the first inclined surface 19 is disposed on the upper surface of the sliding seat 13. The through groove 21 that penetrates the upper and lower surfaces of the fixture body 12 is provided on the first seat body 5. The threaded hole 22 is provided on the second inclined surface 20, and the axis of the threaded hole 22 is perpendicular to the upper surface of the base 1. The first seat body 5 is fixedly connected to the sliding seat 13 by the locking bolt 23 that passes through the through groove 21 and extends into the threaded hole 22. One end of the through groove 21 faces the rod fixture, and the other end faces away from the rod fixture. One end of the first inclined surface 19 facing the rod fixture is higher than the end of the first inclined surface 19 facing away from the rod fixture; one end of the second inclined surface 20 facing the rod fixture is higher than the end of the second inclined surface 20 facing away from the rod fixture. After such a setting, when adjusting the height of the fixture body 12, it is only necessary to move the first inclined surface 19 of the first seat body 5 on the second inclined surface 20 of the sliding seat 13 towards or away from the rod fixture to adjust the height of the fixture body 12. After adjustment, the fixture body 12 and the sliding seat 13 can be locked together by the locking bolt 23.

[0047] As a preferred embodiment, a sliding groove 24 that cooperates with the first inclined surface 19 is provided on the first inclined surface 19 of the first seat body 5. Both ends of the sliding groove 24 extend outside the first seat body 5. The sliding groove 24 is parallel to the slide rail 2. A convex rib 25 that cooperates with the sliding groove (24) is provided on the second inclined surface 20. By providing the sliding groove 24 and the convex rib 25, the relative position between the first seat body 5 and the sliding seat 13 is controlled. After providing the sliding groove 24 and the convex rib 25, when pushing the fixture body 12 to move relative to the sliding seat 13, there is no need to worry that the relative movement direction of the fixture body 12 and the sliding seat 13 is perpendicular to the slide rail 2.

[0048] As a preferred embodiment, an arc-shaped groove 26 coaxial with the positioning through hole 16 is provided on the inner bottom wall of the placement groove 14. The axis of the arc-shaped groove 26 is perpendicular to the slide rail 2. The arc-shaped groove 26 is provided to prevent the bushing from rolling in the placement groove 14, and at the same time, it can ensure that the axis of the bushing is perpendicular to the slide rail 2 after the bushing placed in the placement groove 14 stops.

[0049] As a preferred embodiment, since both the first electrode seat 3 and the second electrode seat 4 have relative rotation with respect to the fixture body 12, therefore, as Figure 3 、 Figure 6As shown in the figure, the universal electrode joint includes a spherical groove 27 and a spherical protrusion 28. The spherical groove 27 cooperates with the spherical protrusion 28. The spherical protrusion 28 is fixedly connected to the side of the rotating shaft 6 facing away from the rod clamp. A spherical groove 27 is provided on the side of the first electrode seat 3 facing the rod clamp and on the side of the second electrode seat 4 facing the rod clamp. The connection line between the centers of the virtual spheres where the spherical grooves 27 are located and the centers of the virtual spheres where the spherical protrusions 28 are located is collinear with the axis of the rotating shaft 6. After such a setting, when the position of the clamp body 12 is adjusted and the clamp body 12 is electrically connected to the first electrode seat 3 or the second electrode seat 4, it is the cooperation between the spherical groove 27 and the spherical protrusion 28, which increases the contact surface between the first electrode seat 3 or the second electrode seat 4 and the clamp body 12, thereby avoiding poor contact.

[0050] As a preferred embodiment, the rod clamp includes a first clamping hand 35, a second clamping hand 36, a symmetric mover, and a second seat body 32. The first clamping hand 35 and the second clamping hand 36 are respectively arranged on both sides of the slide rail 2 on the second seat body 32. The first clamping hand 35 and the second clamping hand 36 are controlled and connected through the symmetric mover. The electrode outer joint is provided on the first clamping hand 35. By setting the symmetric mover, the clamping forces applied by the first clamping hand 35 and the second clamping hand 36 to the rod placed in the rod clamp are equal and opposite in magnitude at each moment during the clamping process, thereby avoiding the situation where the rod falls outside the rod clamp when the first clamping hand 35 moves while the second clamping hand 36 does not move. At the same time, it can also ensure that the plane where the axis of the rod placed in the rod clamp and the axis of the slide rail 2 are located is perpendicular to the upper surface of the base 1, which can save space and facilitate the assembly of the first clamping hand 35 and the second clamping hand 36 with the slide rail 2 as the reference during the manufacturing process.

[0051] As a preferred embodiment, the symmetric mover includes a U-shaped block 29, a first through hole 30, and a sliding rod 31. The U-shaped block 29 is fixedly arranged on the second seat body 32. The plane where the U-shape of the U-shaped block 29 is located is perpendicular to both the slide rail 2 and the upper surface of the base 1. The first clamping hand 35 and the second clamping hand 36 are respectively arranged on the two inner side walls of the U-shaped block 29. A first through hole 30 penetrating the U-shaped block 29 is provided on the bottom wall of the U-shaped block 29. The axis of the first through hole 30 is perpendicular to the slide rail 2 and parallel to the upper surface of the base 1. The sliding rod 31 is coaxially arranged in the first through hole 30, and the length of the sliding rod 31 is greater than the distance between the two outer side walls of the U-shape of the U-shaped block 29 (such as Figure 9 , Figure 11As shown in the figure, a telescopic device 46 is fixedly arranged outside the U-shaped block 29 at one end of the sliding rod 31, and a connecting block 47 is fixedly arranged outside the U-shaped block 29 at the other end. The connecting block 47 is fixedly connected to the second clamping hand 36. The connecting block 47 is connected to the U-shaped block 29 through a spring. A second through hole 33 is provided on the side wall of the U-shaped block 29 facing away from the second clamping hand 36. The axis of the second through hole 33 is parallel to the axis of the first through hole 30. The execution end of the telescopic device 46 is fixedly connected to one end of the sliding rod 31. A sliding rod is provided on the telescopic device 46. The two ends of the sliding rod are slidably connected to the second through hole 33. The other end of the sliding rod axially penetrates through the second through hole 33 and is fixedly connected to the first clamping hand 35 inside the U-shaped block 29. The first clamping hand 35 is connected to one end of the elastic member 34. The other end of the elastic member 34 is fixedly connected between the first clamping hand 35 and the telescopic device 46 on the U-shaped block 29. After such a setting, the function of the elastic member 34 is to keep the first clamping hand 35 and the second clamping hand 36 separated; when the telescopic device 46 extends, one end of the telescopic device 46 pushes the sliding rod 31 to move towards one side of the slide rail 2, and then pushes the connecting block 47 and the second clamping hand 36 to move towards one side of the slide rail 2; the other end of the telescopic device 46 pulls the U-shaped block 29 to move towards the other side of the slide rail 2, and then pulls the first clamping hand 35 to move towards the other side of the slide rail 2, so that the first clamping hand 35 and the second clamping hand 36 move away from each other at the same speed; when clamping, the telescopic device 46 contracts, and the first clamping hand 35 and the second clamping hand 36 move towards the slide rail 2 at the same speed under the action of the elastic member 34, that is, the first clamping hand 35 and the second clamping hand 36 move towards each other (get closer to each other) to achieve the clamping function.

[0052] As a preferred method, a plurality of first clamping claws 37 are arranged on the first clamping hand 35 along the axis direction of the slide rail 2, and a plurality of second clamping claws 38 are arranged on the second clamping hand 36 along the axis direction of the slide rail. The first clamping claws 37 cooperate with the second clamping claws 38.

[0053] As a preferred method, a slide rail parallel accommodating device is provided between the first clamping hand 35 and the second clamping hand 36 on the rod clamp. The slide rail parallel accommodating device is located between two adjacent first clamping claws 37. By providing the slide rail parallel accommodating device, as long as the rod is placed in the rod clamp, the axis of the rod must be parallel to the slide rail 2.

[0054] As a preferred embodiment, the parallel-to-rail container includes a support block 39 disposed on the inner bottom wall of the U-shaped block 29. The support block 39 is provided with a V-shaped groove 40 with an upward-facing mouth, and the V-shaped groove 40 is symmetric about the axis of the slide rail 2. After such a setting, the plane where the axis of the rod placed in the rod clamp and the axis of the slide rail 2 are located together must be perpendicular to the upper surface of the base 1, which facilitates welding.

[0055] As a preferred embodiment, the first linear driver is a fourth telescopic cylinder 45. On the side of the second electrode seat 4 facing away from the first electrode seat 3, there is a receiving cavity 42. The opening of the receiving cavity 42 faces away from the first electrode seat 3, and the axis of the receiving cavity 42 is coaxial with the axis of the piston rod of the fourth telescopic cylinder 45. A pressure sensor 43 is provided in the receiving cavity 42. After such a setting, when welding rods of different lengths, the second electrode seat 4 can be driven to move by the telescopic movement of the fourth telescopic cylinder 45, so that the rod placed in the rod clamp contacts the bushing placed in the fixture body 12 for welding. The setting of the pressure sensor 43 can prevent the elongation of the fourth telescopic cylinder 45 from exceeding the preset value, and also to prevent the pressure between the rod placed in the rod clamp and the bushing placed in the fixture body 12 from being too large, resulting in incorrect dimensions after welding. The pressure sensor 43 can be signal-connected to the fourth telescopic cylinder 45, or after the pressure sensor 43 is signal-connected to the control system, the control system is signal-connected to the fourth telescopic cylinder 45. Or the pressure sensor 43 is directly connected to an alarm, so that when the extrusion force of the fourth telescopic cylinder 45 on the second electrode seat 4 exceeds the preset value instantaneously, an alarm reminder is generated, and the worker can stop the elongation of the fourth telescopic cylinder 45.

[0056] As a preferred embodiment, as Figure 14 shown, a notch 44 communicating with the inside of the receiving cavity 42 is provided on the side wall of the receiving cavity 42. One end of the notch 44 is on the side wall of the receiving cavity 42 and near the bottom wall of the receiving cavity 42, and the other end extends out of the receiving cavity 42 in the direction of the opening of the receiving cavity 42. The notch 44 is provided to facilitate the connection of the circuit of the pressure sensor 43 in the receiving cavity 42 to the control system outside the receiving cavity 42.

[0057] As a preferred embodiment, the second linear driver is a third telescopic cylinder 41, and the free end of the piston rod of the third telescopic cylinder 41 is fixedly connected to the rod clamp. In this way, by using a cylinder, the manufacturing cost is reduced.

[0058] As a preferred embodiment, a fifth telescopic cylinder 18 is provided on the seat body 5. The piston rod of the fifth telescopic cylinder 18 is collinear with the axis of the rack 7. The piston rod of the fifth telescopic cylinder 18 is parallel to the upper surface of the base 1, and the piston rod of the fifth telescopic cylinder 18 is perpendicular to the slide rail 2. The free end of the piston rod of the fifth telescopic cylinder 18 is fixedly connected to the rack 7, and the rack 7 is axially slidably arranged on the seat body 5. The axial movement of the rack 7 is controlled by the fifth telescopic cylinder 18, and then the rotation of the gear is controlled. Preferably, in order to save space, perhaps a large fifth telescopic cylinder 18 cannot be installed on the first seat body 5. Therefore, in order to avoid insufficient force caused by a single fifth telescopic cylinder 18, as Figure 7 shown, a fifth telescopic cylinder 18 is installed at each end of the rack 7. During use, it is only necessary to control the telescopic directions of the piston rods of the two fifth telescopic cylinders 18 to be opposite.

Claims

1. An electrode welding jig, characterized in that, It includes a base (1), on which a slide rail (2) is provided. One end of the slide rail (2) is provided with a first electrode base (3). A second electrode base (4) and a rod clamp are slidably arranged on the slide rail (2). An external electrode joint is provided on the rod clamp. The rod clamp is between the first electrode base (3) and the second electrode base (4). On both sides of the rod clamp and between the first electrode base (3) and the second electrode base (4), an angle conversion base is provided respectively. The angle conversion base is slidably connected between the two ends of the slide rail (2). On one side of each angle conversion base facing the rod clamp, a ring clamp is provided. Each of the first electrode base (3) and the second electrode base (4) is electrically connected to one of the ring clamps through a universal electrode joint. On the base (1), a first linear driver for driving the second electrode base (4) and a second linear driver for driving the rod clamp are provided respectively. The driving direction of the linear driver is parallel to the slide rail (2). The angle conversion base includes a first seat body (5), a rotating shaft (6), a rack (7), a gear, a lifter, and a slide seat (13). The first seat body (5) is fixedly arranged on the slide seat (13) through the lifter. The slide seat (13) is slidably connected between the two ends of the slide rail (2). The rotating shaft (6) is arranged on the first seat body (5). The axis of the rotating shaft (6) is in the same vertical plane as the axis of the slide rail (2). The rotating shaft (6) penetrates through both sides of the first seat body (5). The outer circumferential surface of the rotating shaft (6) is connected to the first seat body (5) through a bearing. The gear is coaxially and fixedly sleeved on the outer circumferential surface of the rotating shaft (6). One end of the rotating shaft (6) facing the rod clamp is fixedly connected to the ring clamp outside the first seat body (5). A rack (7) for driving the gear is provided on the first seat body (5).

2. The electrode welding jig according to claim 1, wherein The gear is an incomplete gear. The gear includes teeth (9) and a tooth ring (8). A plurality of teeth (9) are arranged along the circumferential direction on the tooth ring (8). The central angle of the projection of the whole formed by all the teeth (9) on the plane where the tooth ring (8) is located is a flat angle. On the outer circumferential surface of the tooth ring (8), a stopper (10) is radially provided at each end of the queue formed by all the teeth (9). On both sides of the rotating shaft (6) on the first seat body (5), a first telescopic cylinder (11) cooperating with the stopper (10) is provided respectively. The two first telescopic cylinders (11) are parallel to each other and both perpendicular to the rotating shaft (6). During the rotation of the gear, each of the two stoppers (10) is within the stroke range of one of the first telescopic cylinders (11).

3. An electrode welding jig according to claim 2, characterized in that, The annular fixture includes a fixture body (12), a placement groove (14), and a gripper. The fixture body (12) is provided with the placement groove (14). The placement groove (14) has openings on both the side of the fixture body (12) facing the rod fixture and the side of the fixture body (12) facing away from the base (1). The fixture body (12) is provided with a gripper extending into the placement groove (14).

4. An electrode welding jig according to claim 3, characterized in that, The gripper includes a second telescopic cylinder (15), a positioning through-hole (16), and an insulating layer (17). The fixture body (12) is provided with the positioning through-hole (16) communicating with the placement groove (14). The axis of the positioning through-hole (16) is perpendicular to two opposite side walls of the placement groove (14). The insulating layer (17) is provided on the inner surface of the positioning through-hole (16). The second telescopic cylinder (15) is arranged on the outer side wall of the fixture body (12). The piston rod of the second telescopic cylinder (15) is coaxial with the positioning through-hole (16). The placement groove (14) is within the stroke range of the piston rod of the second telescopic cylinder (15).

5. The electrode welding jig according to claim 3, characterized in that, The lifter includes a first inclined surface (19), a second inclined surface (20), a through groove (21), a threaded hole (22), and a locking bolt (23). The lower surface of the first seat body (5) is provided with the first inclined surface (19). The upper surface of the sliding seat (13) is provided with a second inclined surface (20) cooperating with the first inclined surface (19). The first seat body (5) is provided with the through groove (21) penetrating the upper and lower surfaces of the fixture body (12). The threaded hole (22) is provided on the second inclined surface (20). The axis of the threaded hole (22) is perpendicular to the upper surface of the base (1). The first seat body (5) is fixedly connected to the sliding seat (13) by the locking bolt (23) extending into the threaded hole (22) through the through groove (21). One end of the through groove (21) faces the rod fixture, and the other end faces away from the rod fixture. The end of the first inclined surface (19) facing the rod fixture is higher than the end of the first inclined surface (19) facing away from the rod fixture; the end of the second inclined surface (20) facing the rod fixture is higher than the end of the second inclined surface (20) facing away from the rod fixture.

6. The electrode welding jig according to claim 5, wherein, The first seat body (5) is provided with a chute (24) cooperating with the first inclined surface (19) on the first inclined surface (19). Both ends of the chute (24) extend outside the first seat body (5). The chute (24) is parallel to the slide rail (2). The second inclined surface (20) is provided with a rib (25) cooperating with the chute (24).

7. According to an electrode welding jig as claimed in claim 4, an arc-shaped groove (26) coaxial with the positioning through-hole (16) is provided on the inner bottom wall of the placement groove (14). The axis of the arc-shaped groove (26) is perpendicular to the slide rail (2).

8. An electrode welding jig according to claim 1, characterized in that, The universal electrode joint includes a spherical groove (27) and a spherical protrusion (28). The spherical groove (27) cooperates with the spherical protrusion (28). The spherical protrusion (28) is fixedly connected to the side of the rotating shaft (6) facing away from the rod clamp. The spherical grooves (27) are provided on the side of the first electrode seat (3) facing the rod clamp and on the side of the second electrode seat (4) facing the rod clamp. The line connecting the centers of the virtual spheres where the spherical grooves (27) are located and the center of the virtual sphere where the spherical protrusion (28) is located is collinear with the axis of the rotating shaft (6).

9. An electrode welding fixture according to claim 1, wherein The rod clamp includes a first clamping hand (35), a second clamping hand (36), a symmetric mover, and a second seat body (32). The first clamping hand (35) and the second clamping hand (36) are respectively arranged on both sides of the slide rail (2) on the second seat body (32). The first clamping hand (35) and the second clamping hand (36) are controllably connected through the symmetric mover. The electrode outer joint is provided on the first clamping hand (35).

10. An electrode welding jig according to claim 9, characterized in that, The symmetric mover includes a U-shaped block (29), a first through hole (30), and a sliding rod (31). The U-shaped block (29) is fixedly arranged on the second seat body (32). The plane where the U-shape of the U-shaped block (29) is located is perpendicular to both the slide rail (2) and the upper surface of the base (1). The first clamping hand (35) and the second clamping hand (36) are respectively arranged on the two inner side walls of the U-shaped block (29). The first through hole (30) penetrating the U-shaped block (29) is provided on the bottom wall of the U-shaped block (29). The axis of the first through hole (30) is perpendicular to the slide rail (2) and parallel to the upper surface of the base (1). The sliding rod (31) is coaxially arranged in the first through hole (30). The length of the sliding rod (31) is greater than the distance between the two outer side walls of the U-shape of the U-shaped block (29). One end of the sliding rod (31) fixedly arranges a telescopic device (46) outside the U-shaped block (29), and the other end fixedly arranges a connecting block (47) outside the U-shaped block (29). The connecting block (47) is fixedly connected to the second clamping hand (36). The second through hole (33) is provided on the side wall of the U-shaped block (29) facing away from the second clamping hand (36). The axis of the second through hole (33) is parallel to the axis of the first through hole (30). The execution end of the telescopic device (46) is fixedly connected to one end of the sliding rod (31). The other end of the sliding rod (31) penetrates the second through hole (33) and is fixedly connected to the first clamping hand (35) inside the U-shaped block (29). The first clamping hand (35) is connected to one end of an elastic member (34). The other end of the elastic member (34) is fixedly connected between the first clamping hand (35) and the telescopic device (46) on the U-shaped block (29).

11. An electrode welding fixture according to claim 10, characterized in that, A plurality of first clamping claws (37) are arranged on the first clamping hand (35) along the axial direction of the slide rail (2), and a plurality of second clamping claws (38) are arranged on the second clamping hand (36) along the axial direction of the slide rail. The first clamping claws (37) cooperate with the second clamping claws (38).

12. An electrode welding jig according to claim 11, characterized in that, A parallel-to-slide-rail container is provided between the first clamping hand (35) and the second clamping hand (36) on the rod clamp, and the parallel-to-slide-rail container is located between two adjacent first clamping claws (37).

13. An electrode welding fixture according to claim 12, wherein, The parallel-to-slide-rail container includes a support block (39). The support block (39) is arranged on the inner bottom wall of the U-shaped block (29). A V-shaped groove (40) with an upward-facing mouth is provided on the support block (39), and the V-shaped groove (40) is symmetric about the axis of the slide rail (2).

14. An electrode welding jig according to claim 1, characterized in that, The first linear driver is a fourth telescopic cylinder (45). An accommodation cavity (42) is provided on the second electrode seat (4) on the side facing away from the first electrode seat (3). The opening of the accommodation cavity (42) faces away from the first electrode seat (3). The axis of the accommodation cavity (42) is coaxial with the axis of the piston rod of the fourth telescopic cylinder (45), and a pressure sensor (43) is provided in the accommodation cavity (42).

15. An electrode welding jig according to claim 14, wherein, A notch (44) communicating with the inside of the accommodation cavity (42) is provided on the side wall of the accommodation cavity (42). One end of the notch (44) is on the side wall of the accommodation cavity (42) and near the bottom wall of the accommodation cavity (42), and the other end extends towards the opening direction of the accommodation cavity (42) to the outside of the accommodation cavity (42).

16. An electrode welding jig according to claim 1, characterized in that, The second linear driver is a third telescopic cylinder (41). The free end of the piston rod of the third telescopic cylinder (41) is fixedly connected to the rod clamp.

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