Electrode welding device with exchange function

Abstract

The utility model discloses an electrode welding device with replacement function belongs to welding technical field, including mechanical arm end, and the quick connection structure is connected to mechanical arm end, and the quick connection structure includes support cylinder, connecting roof, guide component and pneumatic locking assembly, and the connecting roof bottom is connected with pneumatic locking assembly, and pneumatic locking assembly is connected with support cylinder, and connecting roof is connected with guide component, and guide component is connected with support cylinder, and guide component compares with pneumatic locking assembly first and support cylinder contact, the bottom fixed connection of support cylinder has elbow arm, and the lower electrode fixed mounting is in the elbow arm inner bottom place, and the position adjusting assembly is fixedly connected to elbow arm side wall upper end, and the upper electrode fixed mounting is in the drive end of position adjusting assembly, and the inlet and outlet of position adjusting assembly end is located in support cylinder and connecting roof, and support cylinder and connecting roof are connected with the conductive component for the electric control of upper electrode and lower electrode, the utility model discloses realizes the automation replacement, and it is beneficial to practical use.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically to an electrode welding device with a replaceable function. Background Technology

[0002] Automotive stamping parts require welding using electrode welding robots during assembly.

[0003] For example, Chinese patent CN117047247B describes an automated welding robot for automotive sheet metal, including a base with a robotic arm mounted on it. A resistance welding device is mounted at the output end of the robotic arm. The resistance welding device includes a frame with a large arm mounted on it. A first electrode is mounted at the end of the large arm furthest from the frame, and a second electrode is mounted on the frame. The first and second electrodes are coaxially arranged, and the second electrode can reciprocate up and down along the central axis of the first electrode. This invention, through a moving component and a cleaning component, quickly slides across the electrode head during its resetting process to clean the layer that adheres to the electrode head during high-temperature operation. This does not require stopping the machine to clean the electrode head, thus solving the problem of the layer adhering to the electrode head affecting welding quality without affecting the normal welding process.

[0004] However, the resistance welding equipment and the robotic arm described above are fixedly connected, and cannot be replaced to meet different welding needs, which is not conducive to practical use.

[0005] Based on this, the present invention designs an electrode welding device with a replacement function. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an electrode welding device with a replacement function.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An electrode welding device with a replacement function includes a robotic arm end effector;

[0009] The robotic arm end effector is equipped with a quick-connect structure for the overall replacement of the upper and lower electrodes;

[0010] The quick-connect structure includes a support cylinder, a connecting top plate, a guide assembly, and a pneumatic locking assembly. The bottom of the connecting top plate is connected to the pneumatic locking assembly, the pneumatic locking assembly is connected to the support cylinder, the connecting top plate is connected to the guide assembly, the guide assembly is connected to the support cylinder, and the guide assembly contacts the support cylinder before the pneumatic locking assembly.

[0011] A crank arm is fixedly connected to the bottom of the support cylinder;

[0012] The lower electrode is fixedly installed at the bottom of the crank arm. A position adjustment component is fixedly connected to the upper end of the crank arm side wall, and the upper electrode is fixedly installed on the drive end of the position adjustment component. The air inlet and outlet of the position adjustment component are located inside the support cylinder and the connecting top plate. The support cylinder and the connecting top plate are connected to a conductive component for the electrical control of the upper and lower electrodes. The conductive component is electrically connected to the upper and lower electrodes. When the support cylinder and the connecting top plate are in contact, the air inlet and outlet of the position adjustment component are in the air path conduction state, and the conductive component is in the circuit conduction state. When the support cylinder and the connecting top plate are separated, the air inlet and outlet of the position adjustment component are in the air path disconnection state, and the conductive component is in the circuit disconnection state.

[0013] Furthermore, the guide assembly includes positioning rods, with multiple sets of positioning rods fixedly installed at equal intervals along the circumference at the bottom outer edge of the connecting top plate. The support cylinder has positioning holes at equal intervals along the circumference, and the inner wall of the positioning hole is slidably connected to the outer wall of the positioning rod.

[0014] Furthermore, the bottom of the positioning rod is tapered.

[0015] Furthermore, the height of the positioning rod is less than the height of the positioning socket, the upper and lower electrodes are replaced, and the lower end of the positioning socket is inserted into the positioning post of the external welding gun support frame.

[0016] Furthermore, the pneumatic locking assembly includes a third air pipe, a fourth air pipe, an inner cylinder, a piston, a piston rod, a conical head, a wedge block, an insert plate, and a spring. The third and fourth air pipes are fixedly installed on the top of the support cylinder, and the inner cylinder is fixedly installed on the bottom of the connecting top plate. The outer wall of the connecting top plate is slidably connected to the inner wall of the support cylinder. A chamber is opened at the upper end of the inner cylinder, and two sets of through holes are opened in the inner cylinder. The upper and lower ends of one set of through holes are connected to the bottom of the third air pipe and the lower end of the side wall of the chamber, respectively. The upper and lower ends of the other set of through holes are connected to the bottom of the fourth air pipe and the top of the chamber, respectively. The outer wall of the piston is slidably connected to the inner wall of the chamber, and the bottom of the piston is fixedly connected to the top of the piston rod. The bottom of the piston rod is fixedly connected to the conical head. A transverse sliding hole is opened at equal intervals along the circumference at the lower end of the inner cylinder. An insert plate is slidably connected in the transverse sliding hole. A wedge block that cooperates with the conical head is fixedly connected to the inner end of the insert plate. A locking hole is opened in the inner wall of the support cylinder to be inserted into the outer end of the insert plate.

[0017] Furthermore, the spring is in a relaxed state when the insert plate is separated from the keyhole, and in a compressed state when the insert plate and the keyhole are inserted.

[0018] Furthermore, the position adjustment assembly includes a connecting frame, a cylinder, a first air pipe, and a second air pipe. The cylinder is fixedly installed on the upper end of the side wall of the crank arm, and the driving end of the cylinder is fixedly connected to the connecting frame. The connecting frame is fixedly connected to the upper electrode. The two sets of first air pipes are respectively connected to the upper and lower ends of the cylinder. The bottom of the support cylinder has two sets of second straight holes, and the bottom of the two sets of second straight holes is connected to the top of the two sets of first air pipes. The bottom of the second air guide cylinder is connected to the top of the second straight holes. The bottom of the inner cylinder has two sets of first insertion holes, and the inner wall of the first insertion hole is slidably connected to the outer wall of the second air guide cylinder. The inner cylinder and the connecting top plate each have a first straight hole at the top of the first insertion hole. The two sets of second air pipes are fixedly installed on the connecting top plate, and the two sets of second air pipes are respectively connected to the two sets of first straight holes.

[0019] Furthermore, the conductive component includes conductive wires, male connectors, and female connectors. Two sets of conductive wires are fixedly installed on the upper part of the connecting top plate. Two sets of mounting holes are opened at the bottom of the inner cylinder. The male connectors are fixedly installed in the mounting holes. The conductive wires pass through the mounting holes opened in the connecting top plate and the inner cylinder and are electrically connected to the male connectors. Two sets of female connectors are fixedly installed at the bottom of the support cylinder. The bottom of the female connectors is electrically connected to the top of the connecting wires. The bottom of the two sets of connecting wires is electrically connected to the upper electrode and the lower electrode, respectively.

[0020] Beneficial effects

[0021] When replacing the upper and lower electrodes, this invention moves the quick-connect support cylinder to the external welding torch support frame. The pneumatic locking component unlocks, and the robotic arm's end effector moves the connecting top plate upward. The connecting top plate then causes the pneumatic locking component to separate from the support cylinder. At this time, the air inlet and outlet of the position adjustment component are in a disconnected air path state, and the conductive component is in a disconnected circuit state. The robotic arm's end effector moves the connecting top plate above the support cylinder of the upper and lower electrodes to be replaced. The robotic arm's end effector then moves the connecting top plate downward, causing the connecting top plate to contact the guide component with the support cylinder. Under the action of the guide component, the pneumatic locking component is guided to move into the support cylinder. The pneumatic locking component locks the support cylinder and the connecting top plate. At this time, the air inlet and outlet of the position adjustment component are in a connected air path state, and the conductive component is in a connected circuit state. The welding torch control system controls the upper and lower electrodes through the conductive component, enabling rapid replacement of the upper and lower electrodes. It also ensures that the air inlet and outlet of the position adjustment component automatically reconnects after replacement. Simultaneously, the upper and lower electrodes are electrically connected to the welding torch control system, achieving automated replacement, which is beneficial for practical use. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 The main structure of this utility model is three-dimensional. Figure 1 ;

[0024] Figure 2 This is a front view of the main body of this utility model;

[0025] Figure 3 This is a left view of the main body of this utility model;

[0026] Figure 4 The main three-dimensional form of this utility model Figure 2 ;

[0027] Figure 5 For along Figure 2 A partial sectional view along the AA direction;

[0028] Figure 6 For along Figure 3 Partial cross-sectional view along the BB direction.

[0029] The labels in the diagram represent:

[0030] 1. Robotic arm end effector; 2. Upper electrode; 3. Lower electrode; 4. Crank arm; 5. Position adjustment assembly; 51. Connecting frame; 52. Cylinder; 53. First air pipe; 54. Second air pipe; 55. First straight hole; 56. First insertion hole; 57. Second air guide tube; 58. Second straight hole; 6. Quick-connect structure; 61. Support cylinder; 62. Connecting top plate; 63. Third air pipe; 64. Fourth air pipe; 65. Inner cylinder; 66. Piston; 67. Chamber; 68. Piston rod; 69. Through hole; 610. Positioning rod; 611. Positioning insertion hole; 612. Conical head; 613. Wedge block; 614. Insert plate; 615. Horizontal sliding hole; 616. Locking hole; 617. Spring; 7. Conductive assembly; 71. Conductive wire; 72. Male connector terminal; 73. Mounting hole; 74. Female connector terminal; 75. Connecting wire. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] The present invention will be further described below with reference to the embodiments.

[0033] In some embodiments: please refer to the appendix to the instruction manual. Figure 1-6 An electrode welding device with a replacement function includes a robotic arm end effector 1;

[0034] The end effector 1 of the robotic arm is connected to a quick-connect structure 6 for the overall replacement of the upper electrode 2 and the lower electrode 3;

[0035] The quick-connect structure 6 includes a support cylinder 61, a connecting top plate 62, a guide assembly, and a pneumatic locking assembly. The bottom of the connecting top plate 62 is connected to the pneumatic locking assembly, the pneumatic locking assembly is connected to the support cylinder 61, the connecting top plate 62 is connected to the guide assembly, the guide assembly is connected to the support cylinder 61, and the guide assembly contacts the support cylinder 61 before the pneumatic locking assembly.

[0036] A crank arm 4 is fixedly connected to the bottom of the support cylinder 61;

[0037] The lower electrode 3 is fixedly installed at the bottom of the crank arm 4. The upper end of the side wall of the crank arm 4 is fixedly connected to the position adjustment component 5, and the upper electrode 2 is fixedly installed on the drive end of the position adjustment component 5. The air inlet and outlet of the position adjustment component 5 are located inside the support cylinder 61 and the connecting top plate 62. The support cylinder 61 and the connecting top plate 62 are connected to a conductive component 7 for the electrical control of the upper electrode 2 and the lower electrode 3. The conductive component 7 is electrically connected to the upper electrode 2 and the lower electrode 3. When the support cylinder 61 and the connecting top plate 62 are in contact, the air inlet and outlet of the position adjustment component 5 are in the air path conduction state, and the conductive component 7 is in the circuit conduction state. When the support cylinder 61 and the connecting top plate 62 are separated, the air inlet and outlet of the position adjustment component 5 are in the air path disconnection state, and the conductive component 7 is in the circuit disconnection state.

[0038] When replacing the upper electrode 2 and the lower electrode 3, move the support cylinder 61 of the quick-connect structure 6 to the external welding torch support frame. The pneumatic locking assembly unlocks, and the robotic arm end effector 1 drives the connecting top plate 62 to move upward. The connecting top plate 62 drives the pneumatic locking assembly to separate from the support cylinder 61. At this time, the air inlet and outlet of the position adjustment assembly 5 are in the air circuit disconnected state, and the conductive assembly 7 is in the circuit disconnected state. The robotic arm end effector 1 drives the connecting top plate 62 to move above the support cylinder 61 of the upper electrode 2 and the lower electrode 3 that need to be replaced. The robotic arm end effector 1 drives the connecting top plate 62 to move downward, and the connecting top plate 62 drives the guide assembly. When in contact with the support cylinder 61, the guide component guides the pneumatic locking component to move into the support cylinder 61. The pneumatic locking component locks the support cylinder 61 and the connecting top plate 62. At this time, the air inlet and outlet of the position adjustment component 5 are in the air path conduction state, and the conductive component 7 is in the circuit conduction state. The welding torch control system controls the upper electrode 2 and the lower electrode 3 through the conductive component 7 to realize the rapid replacement of the upper electrode 2 and the lower electrode 3, and ensures that the air inlet and outlet of the position adjustment component 5 are automatically connected after replacement. At the same time, the upper electrode 2 and the lower electrode 3 are electrically connected to the welding torch control system to realize automated replacement, which is beneficial to practical use.

[0039] In some embodiments, the guide assembly includes positioning rods 610, and multiple sets of positioning rods 610 are fixedly installed at equal intervals along the circumference at the bottom outer edge of the connecting top plate 62. The support cylinder 61 is provided with positioning holes 611 at equal intervals along the circumference, and the inner wall of the positioning hole 611 is slidably connected to the outer wall of the positioning rod 610.

[0040] The bottom of the positioning rod 610 is tapered.

[0041] The height of the positioning rod 610 is less than the height of the positioning hole 611. The upper electrode 2 and the lower electrode 3 are replaced. The lower end of the positioning hole 611 is inserted into the positioning post of the external welding gun support frame.

[0042] The support cylinder 61 is positioned on the external welding gun support frame, which facilitates standardized alignment in the later stage;

[0043] The pneumatic locking assembly includes a third air pipe 63, a fourth air pipe 64, an inner cylinder 65, a piston 66, a piston rod 68, a conical head 612, a wedge block 613, an insert plate 614, and a spring 617. The third air pipe 63 and the fourth air pipe 64 are fixedly installed on the top of the support cylinder 61, and the inner cylinder 65 is fixedly installed on the bottom of the connecting top plate 62. The outer wall of the connecting top plate 62 is slidably connected to the inner wall of the support cylinder 61. A chamber 67 is opened at the upper end of the inner cylinder 65, and two sets of through holes 69 are opened in the inner cylinder 65. The upper and lower ends of one set of through holes 69 are respectively connected to the bottom of the third air pipe 63 and the lower end of the side wall of the chamber 67, and the upper and lower ends of the other set of through holes 69 are respectively connected to the bottom of the fourth air pipe 64 and the lower end of the side wall of the chamber 67. The top of the piston 66 is connected to the outer wall of the piston 66 and the inner wall of the chamber 67. The bottom of the piston 66 is fixedly connected to the top of the piston rod 68. The bottom of the piston rod 68 is fixedly connected to the conical head 612. The lower end of the inner cylinder 65 has horizontal sliding holes 615 at equal intervals along the circumference. The insert plate 614 is slidably connected in the horizontal sliding hole 615. The inner end of the insert plate 614 is fixedly connected to a wedge block 613 that cooperates with the conical head 612. The inner wall of the support cylinder 61 has a locking hole 616 that is inserted into the outer end of the insert plate 614. When the insert plate 614 is separated from the locking hole 616, the spring 617 is in a natural state. When the insert plate 614 and the locking hole 616 are inserted, the spring 617 is in a compressed state.

[0044] The piston rod 68 is slidably connected to the movable hole at the middle end of the inner cylinder 65.

[0045] When replacing the upper electrode 2 and the lower electrode 3, the support cylinder 61 of the quick-connect structure 6 is moved to the welding torch support frame on the outside. The third air pipe 63 of the pneumatic locking assembly is inlet and the fourth air pipe 64 is outlet, pushing the chamber 67 to move upward. The chamber 67 drives the piston rod 68 to move upward. The piston rod 68 drives the conical head 612 to move upward. The spring 617 drives the wedge block 613 to move inward. The wedge block 613 drives the insert plate 614 to move along the transverse sliding hole 615 and separate from the lock hole 616, thus unlocking. The end of the robot arm 1 drives the connecting top plate 62 to move upward. The connecting top plate 62 drives the inner cylinder 65 of the pneumatic locking assembly to separate from the support cylinder 61. At this time, the air inlet and outlet of the position adjustment component 5 are in the air circuit disconnected state and the conductive component 7 is in the circuit disconnected state.

[0046] The end effector 1 of the robotic arm moves the connecting top plate 62 to above the support cylinder 61 of the upper electrode 2 and lower electrode 3 that need to be replaced. The end effector 1 then moves the connecting top plate 62 downward. The connecting top plate 62 causes the positioning rod 610 of the guide assembly to contact the positioning hole 611 in the support cylinder 61. Under the combined action of the positioning rod 610 and the positioning hole 611, the inner cylinder 65 of the pneumatic locking assembly is guided to move into the support cylinder 61. Then, air enters through the fourth air pipe 64 and exits through the third air pipe 63. The piston 66 moves downward, driving the piston rod 68 downward. The piston rod 68 drives the conical head 612 downward, pushing the wedge block 613. As the wedge block 613 moves outward, it drives the insert plate 614 to move outward. The insert plate 614 is inserted into the locking hole 616. The insert plate 614 and the locking hole 616 cooperate to lock the inner cylinder 65. The locking of the inner cylinder 65 locks the support cylinder 61 and the connecting top plate 62. At this time, the air inlet and outlet of the position adjustment component 5 are in the air path conduction state, and the conductive component 7 is in the circuit conduction state. The welding torch control system controls the upper electrode 2 and the lower electrode 3 through the conductive component 7 to realize the rapid replacement of the upper electrode 2 and the lower electrode 3, and ensures that the air inlet and outlet of the position adjustment component 5 are automatically connected after replacement. At the same time, the upper electrode 2 and the lower electrode 3 are electrically connected to the welding torch control system to realize automated replacement, which is beneficial to practical use.

[0047] In some embodiments: the position adjustment assembly 5 includes a connecting frame 51, a cylinder 52, a first air pipe 53, and a second air pipe 54. The cylinder 52 is fixedly installed on the upper end of the side wall of the crank arm 4. The driving end of the cylinder 52 is fixedly connected to the connecting frame 51. The connecting frame 51 is fixedly connected to the upper electrode 2. The two sets of first air pipes 53 are respectively connected to the upper and lower ends of the cylinder 52. The bottom of the support cylinder 61 is provided with two sets of second straight holes 58. The bottom of the two sets of second straight holes 58 are connected to the two sets of first air pipes 53. The top is connected and fixedly connected. The bottom of the second air guide cylinder 57 is connected and fixedly connected to the top of the second straight hole 58. The bottom of the inner cylinder 65 is provided with two sets of first insertion holes 56. The inner wall of the first insertion hole 56 is slidably connected to the outer wall of the second air guide cylinder 57. The inner cylinder 65 and the connecting top plate 62 are both provided with first straight holes 55 at the top of the first insertion holes 56. The two sets of second air pipes 54 are fixedly installed on the connecting top plate 62. The two sets of second air pipes 54 are respectively connected and fixedly connected to the two sets of first straight holes 55.

[0048] The two sets of second air pipes 54, third air pipes 63 and fourth air pipes 64 are fixedly connected to the external air pressure control station.

[0049] The connecting top plate 62 drives the inner cylinder 65 of the pneumatic locking assembly to separate from the support cylinder 61. At this time, the connecting top plate 62 drives the second air pipe 54 to move upward, and the inner cylinder 65 drives the first insertion hole 56 and the second air guide cylinder 57 to separate. The air inlet and outlet of the position adjustment assembly 5 are in the air path disconnected state.

[0050] The inner cylinder 65 locks the support cylinder 61 and the connecting top plate 62. The inner cylinder 65 drives the first insertion hole 56 to be inserted into the second air guide cylinder 57, so that the second air pipe 54, the first straight hole 55, the second air guide cylinder 57, the second straight hole 58 and the first air pipe 53 are connected. The air inlet and outlet of the position adjustment component 5 are in the air passage conduction state.

[0051] The end effector 1 of the robotic arm drives the lower electrode 3 to contact the bottom of the workpiece to be welded. Then, air enters through the first air pipe 53 connected to the upper end of the cylinder 52 and exits through the first air pipe 53 connected to the lower end of the cylinder 52. At this time, the cylinder 52 drives the connecting frame 51 to move downward. The connecting frame 51 drives the upper electrode 2 to move downward until it contacts the top of the workpiece. The conductive component 7 energizes the upper electrode 2 and the lower electrode 3. The upper electrode 2 and the lower electrode 3 cooperate to perform electrode welding. After welding is completed, air exits through the first air pipe 53 connected to the upper end of the cylinder 52 and enters through the first air pipe 53 connected to the lower end of the cylinder 52. At this time, the cylinder 52 drives the connecting frame 51 to move upward. The connecting frame 51 drives the upper electrode 2 to move upward.

[0052] In some embodiments: the conductive component 7 includes conductive wires 71, male plug terminals 72 and female plug terminals 74. Two sets of conductive wires 71 are fixedly installed on the upper end of the connecting top plate 62. Two sets of mounting holes 73 are opened at the bottom of the inner cylinder 65. The male plug terminals 72 are fixedly installed in the mounting holes 73. The conductive wires 71 pass through the mounting holes opened in the connecting top plate 62 and the inner cylinder 65 and are electrically connected to the male plug terminals 72. Two sets of female plug terminals 74 are fixedly installed at the bottom of the support cylinder 61. The bottom of the female plug terminals 74 is electrically connected to the top of the connecting wires 75. The bottom of the two sets of connecting wires 75 are electrically connected to the upper electrode 2 and the lower electrode 3, respectively.

[0053] The two sets of conductive wires 71 are electrically connected to the positive and negative poles of the welding host, respectively;

[0054] The connecting top plate 62 drives the inner cylinder 65 of the pneumatic locking assembly to separate from the support cylinder 61. The inner cylinder 65 drives the male plug terminal 72 and female plug terminal 74 of the conductive assembly 7 to separate, and the conductive assembly 7 is in a circuit disconnected state.

[0055] The inner cylinder 65 locks the support cylinder 61 and the connecting top plate 62, and the inner cylinder 65 drives the male plug terminal 72 and the female plug terminal 74, so that the conductive component 7 is in the circuit conduction state.

[0056] The welding host supplies power to the upper electrode 2 and the lower electrode 3 through the conductive wire 71, male plug terminal 72, female plug terminal 74, and connecting wire 75, and the upper electrode 2 and the lower electrode 3 cooperate to perform electrode welding.

[0057] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An electrode welding device with a replacement function, comprising a robotic end effector (1), characterized in that... ； The end effector (1) of the robotic arm is connected to a quick-connect structure (6) for the overall replacement of the upper electrode (2) and the lower electrode (3); The quick-connect structure (6) includes a support cylinder (61), a connecting top plate (62), a guide assembly, and a pneumatic locking assembly. The bottom of the connecting top plate (62) is connected to the pneumatic locking assembly, the pneumatic locking assembly is connected to the support cylinder (61), the connecting top plate (62) is connected to the guide assembly, the guide assembly is connected to the support cylinder (61), and the guide assembly contacts the support cylinder (61) before the pneumatic locking assembly. A crank arm (4) is fixedly connected to the bottom of the support cylinder (61); The lower electrode (3) is fixedly installed at the bottom of the crank arm (4). The upper end of the side wall of the crank arm (4) is fixedly connected to the position adjustment component (5), and the upper electrode (2) is fixedly installed on the drive end of the position adjustment component (5). The air inlet and outlet of the position adjustment component (5) are located inside the support cylinder (61) and the connecting top plate (62). The support cylinder (61) and the connecting top plate (62) are connected to a conductive component (7) for the electrical control of the upper electrode (2) and the lower electrode (3). The conductive component (7) is electrically connected to the upper electrode (2) and the lower electrode (3). When the support cylinder (61) and the connecting top plate (62) are in contact, the air inlet and outlet of the position adjustment component (5) are in the air path conduction state and the conductive component (7) is in the circuit conduction state. When the support cylinder (61) and the connecting top plate (62) are separated, the air inlet and outlet of the position adjustment component (5) are in the air path disconnection state and the conductive component (7) is in the circuit disconnection state.

2. The electrode welding device with replacement function according to claim 1, characterized in that, The guide assembly includes positioning rods (610), and multiple sets of positioning rods (610) are fixedly installed at equal intervals along the circumference at the bottom outer edge of the connecting top plate (62). The support cylinder (61) is provided with positioning holes (611) at equal intervals along the circumference. The inner wall of the positioning hole (611) is slidably connected to the outer wall of the positioning rod (610).

3. The electrode welding device with replacement function according to claim 2, characterized in that, The bottom of the positioning rod (610) is tapered.

4. The electrode welding device with replacement function according to claim 3, characterized in that, The height of the positioning rod (610) is less than the height of the positioning socket (611). The upper electrode (2) and the lower electrode (3) are replaced. The lower end of the positioning socket (611) is inserted into the positioning post of the welding gun support frame outside.

5. The electrode welding apparatus with a replacement function according to claim 2, characterized in that, The pneumatic locking assembly includes a third air pipe (63), a fourth air pipe (64), an inner cylinder (65), a piston (66), a piston rod (68), a conical head (612), a wedge block (613), an insert plate (614), and a spring (617). The third air pipe (63) and the fourth air pipe (64) are fixedly installed on the top of the support cylinder (61), and the inner cylinder (65) is fixedly installed on the bottom of the connecting top plate (62). The outer wall of the connecting top plate (62) is slidably connected to the inner wall of the support cylinder (61). A chamber (67) is opened at the upper end of the inner cylinder (65), and two sets of through holes (69) are opened in the inner cylinder (65). The upper and lower ends of one set of through holes (69) are respectively connected to the bottom of the third air pipe (63) and the side wall of the chamber (67). The lower end is connected, and the upper and lower ends of another set of through holes (69) are connected to the bottom of the fourth air pipe (64) and the top of the chamber (67) respectively. The outer wall of the piston (66) is slidably connected to the inner wall of the chamber (67). The bottom of the piston (66) is fixedly connected to the top of the piston rod (68). The bottom of the piston rod (68) is fixedly connected to the conical head (612). The lower end of the inner cylinder (65) is provided with horizontal sliding holes (615) at equal intervals along the circumference. The sliding plate (614) is slidably connected in the horizontal sliding hole (615). The inner end of the sliding plate (614) is fixedly connected with a wedge block (613) that cooperates with the conical head (612). The inner wall of the support cylinder (61) is provided with a locking hole (616) that is inserted into the outer end of the sliding plate (614).

6. The electrode welding apparatus with a replacement function according to claim 5, characterized in that, When the insert plate (614) is separated from the lock hole (616), the spring (617) is in a natural state; when the insert plate (614) and the lock hole (616) are inserted, the spring (617) is in a compressed state.

7. The electrode welding apparatus with a replacement function according to claim 5, characterized in that, The position adjustment assembly (5) includes a connecting frame (51), a cylinder (52), a first air pipe (53), and a second air pipe (54). The cylinder (52) is fixedly installed on the upper end of the side wall of the crank arm (4). The driving end of the cylinder (52) is fixedly connected to the connecting frame (51). The connecting frame (51) is fixedly connected to the upper electrode (2). The two sets of first air pipes (53) are respectively connected to the upper and lower ends of the cylinder (52). The bottom of the support cylinder (61) is provided with two sets of second straight holes (58). The bottom of the two sets of second straight holes (58) is connected to the top of the two sets of first air pipes (53). The two parts are connected and fixedly connected. The bottom of the second air guide cylinder (57) is connected and fixedly connected to the top of the second straight hole (58). The bottom of the inner cylinder (65) is provided with two sets of first insertion holes (56). The inner wall of the first insertion hole (56) is slidably connected to the outer wall of the second air guide cylinder (57). The inner cylinder (65) and the connecting top plate (62) are both provided with first straight holes (55) at the top of the first insertion holes (56). The two sets of second air pipes (54) are fixedly installed on the connecting top plate (62). The two sets of second air pipes (54) are respectively connected and fixedly connected to the two sets of first straight holes (55).

8. The electrode welding apparatus with a replacement function according to claim 5, characterized in that, The conductive component (7) includes conductive wires (71), male plug terminals (72) and female plug terminals (74). Two sets of conductive wires (71) are fixedly installed on the upper end of the connecting top plate (62). Two sets of mounting holes (73) are opened at the bottom of the inner cylinder (65). The male plug terminals (72) are fixedly installed in the mounting holes (73). The conductive wires (71) pass through the mounting holes opened in the connecting top plate (62) and the inner cylinder (65) and are electrically connected to the male plug terminals (72). Two sets of female plug terminals (74) are fixedly installed at the bottom of the support cylinder (61). The bottom of the female plug terminals (74) is electrically connected to the top of the connecting wires (75). The bottom of the two sets of connecting wires (75) are electrically connected to the upper electrode (2) and the lower electrode (3) respectively.

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