CN219169871U - Conductive structure of intermediate electrode - Google Patents

Abstract

The utility model provides a conductive structure of an intermediate electrode, which comprises a supporting seat, a conductive copper bar, a chuck, a conductive rod and a force application component, wherein the supporting seat is fixedly arranged, the conductive copper bar is arranged on the supporting seat, the chuck is arranged on the supporting seat, the conductive rod is arranged on the supporting seat, the chuck is used for clamping a central guide post of the intermediate electrode, the conductive copper bar is electrically connected with the conductive rod, the conductive rod is movably arranged in the supporting seat, the force application component acts on the conductive rod, the force application component applies a force towards the central guide post to the conductive rod along the moving direction of the conductive rod, so that the conductive rod is contacted with the central guide post, and the electricity is sequentially conducted to the central guide post through the conductive copper bar and the conductive rod, so that the intermediate electrode is electrified integrally. Therefore, the force applied to the central guide post by the force application component to the conductive rod ensures the contact reliability between the conductive rod and the central guide post, namely the conductive reliability of the conductive rod to the central guide post, and finally the welding quality between the main rib and the spiral rib is ensured.

Description

Conductive structure of intermediate electrode

Technical Field

The utility model relates to the technical field of automatic production of precast pile cage ribs, in particular to a conductive structure of an intermediate electrode.

Background

The cage rib is a main component of the precast pile and mainly comprises a plurality of main ribs which are circumferentially arranged, a head plate end plate assembly fixed at one end of the main ribs, a tail plate end plate assembly fixed at the other end of the main ribs and spiral ribs spirally welded at the periphery of the main ribs, wherein the welding between the main ribs and the spiral ribs is completed by a seam welder.

Before the seam welding machine rolls and welds the main rib and the spiral rib, the rib penetrating operation is carried out firstly: and penetrating a plurality of PC steel bars forming the main bars into a bar penetrating disc of the seam welder, fixing the end parts of the plurality of PC steel bars in a locking plate of a traction trolley in the seam welder after the plurality of PC steel bars pass through an intermediate electrode in the seam welder, and then starting the seam welding operation. In the roll welding process, the middle electrode is distributed in a main reinforcement cage formed by a plurality of main reinforcements, and a conductive structure in the roll welding machine is electrically connected with the middle electrode to supply power to the middle electrode so as to transfer electricity to the main reinforcement cage. However, in the actual operation process, the conductive structure in the seam welder cannot be insulated from the rack and is thick (because of the need of bearing force at the same time), so that larger energy consumption is wasted, and the conduction is unreliable.

Disclosure of Invention

In view of the above-described drawbacks of the prior art, an object of the present utility model is to provide a conductive structure of an intermediate electrode, which is capable of reliably conducting electricity to the intermediate electrode.

In order to achieve the above object, the present utility model provides a conductive structure of an intermediate electrode, including a support seat fixedly disposed, a conductive copper bar mounted on the support seat, a chuck mounted on the support seat, a conductive rod, and a force application member mounted on the support seat, wherein the chuck is used for clamping a core beam of the intermediate electrode, the conductive copper bar is electrically connected with the conductive rod, the conductive rod is movably mounted in the support seat, the force application member acts on the conductive rod, and the force application member applies a force to the conductive rod towards the core beam along a moving direction of the conductive rod, so that the conductive rod contacts with the core beam.

The preferable scheme of the technology is as follows: the conductive structure of the intermediate electrode further comprises a plurality of conductive soft copper strips and a conductive surface connector fixed at one end of the conductive rod facing the central guide post, the chuck comprises a chuck main body and a plurality of clamping jaws capable of radially moving and assembled in the chuck main body, the clamping jaws are used for clamping the periphery of the central guide post, the conductive surface connector is provided with a plurality of conductive claws distributed between two adjacent clamping jaws, and the clamping jaws are connected with the conductive claws distributed at the same circumferential direction side of the clamping jaws through a conductive soft copper strip.

The preferable scheme of the technology is as follows: the central axis of the conductive rod is collinear with the central axis of the central guide post, the conductive rod is movably arranged in the supporting seat along the axial direction of the conductive rod, and the end face of the conductive rod is in surface contact fit with the end face of the central guide post.

The preferable scheme of the technology is as follows: the force application component is a spring, one end of the spring is fixed, and the other end of the spring is connected with one end of the conductive rod, which is opposite to the central guide post.

The preferable scheme of the technology is as follows: the conductive structure of the intermediate electrode further comprises an insulating elastic guide seat fixed at one end of the conductive rod, which is opposite to the central guide column, an elastic fixing seat fixed on the supporting seat, and a connecting rod, wherein two ends of the connecting rod are respectively fixed with one end of the spring and the elastic fixing seat, and the other end of the spring is abutted to the insulating elastic guide seat.

The preferable scheme of the technology is as follows: the connecting rod comprises a rod main body part and an elastic adjusting sleeve which is connected with the periphery of the rod main body part in a threaded mode, and one end of the spring is fixed on the periphery of the elastic adjusting sleeve.

The preferable scheme of the technology is as follows: the conductive structure of the middle electrode further comprises an insulating partition plate and an insulating chute seat which are both fixed on the supporting seat, the conductive copper bar comprises a first copper bar which is bent and extended and a second copper bar which is vertically extended, the lower end of the first copper bar is fixed with the lower end of the second copper bar, the upper end of the second copper bar is fixed with the conductive rod, the second copper bar is fixed with the insulating partition plate, the insulating partition plate is distributed between the second copper bar and the supporting seat, a limiting chute which is vertically communicated is arranged in the insulating chute seat, and the second copper bar is arranged in the limiting chute in a penetrating mode.

The preferable scheme of the technology is as follows: the conductive copper bar further comprises an intermediate copper plate fixedly arranged between the second copper bar and the conductive rod, a connecting groove for accommodating the intermediate copper plate is formed in the outer peripheral surface of the conductive rod, the bottom surface of the connecting groove is a vertical plane, and the intermediate copper plate is in surface contact with the second copper bar and the bottom surface of the connecting groove.

The preferable scheme of the technology is as follows: the conductive structure of the intermediate electrode further comprises an insulating sliding sleeve fixed in the supporting seat, and the conductive rod movably penetrates through the insulating sliding sleeve.

The preferable scheme of the technology is as follows: the chuck comprises a chuck body and a plurality of clamping jaws capable of radially moving and assembled in the chuck body, a clamping cavity for accommodating the central guide post is formed among the clamping jaws, a V-shaped positioning part protruding towards the clamping cavity is arranged on the end face of the clamping jaw facing the clamping cavity, and the V-shaped positioning part is used for being clamped in a V-shaped annular groove at the periphery of the central guide post.

As described above, the conductive structure of the intermediate electrode according to the present utility model has the following advantageous effects:

in this application, after the central guide pillar of chuck centre gripping intermediate electrode, under the effect of force application part, the conductor bar can reliably contact the cooperation all the time with the central guide pillar of intermediate electrode, and the electricity is conducted to the central guide pillar through electrically conductive copper bar and conductor bar in proper order for intermediate electrode is whole electrified. Therefore, the force applied to the central guide post by the force application component to the conductive rod ensures the contact reliability between the conductive rod and the central guide post, namely the conductive reliability of the conductive rod to the central guide post, and finally the welding quality between the main rib and the spiral rib is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a conductive structure of an intermediate electrode in the present application.

Fig. 2 is a half-sectional view of fig. 1.

Fig. 3 is an enlarged view of circle a of fig. 2.

Fig. 4 is a schematic structural diagram of fig. 1 with the support base omitted.

Fig. 5 is a schematic diagram of the connection between the conductive copper bars, conductive surface joints, conductive soft copper strips and chucks in the present application.

Fig. 6 is a schematic structural view of a conductive rod in the present application.

Description of element reference numerals

10. Intermediate electrode

101. Core beam

102. Electrode plate

103 V-shaped annular groove

20. Supporting seat

21. Lower support base

22. Upper clamping seat

30. Conductive copper bar

31. First copper bar

32. Second copper bar

33. Intermediate copper plate

40. Chuck

41. Chuck body

411. Radial chute

412. Guide convex strip

42. Clamping jaw

421 V-shaped positioning part

422. Clamping jaw seat

423. Clamping jaw main body

424. Guide groove

50. Conductive rod

51. Connection groove

60. Spring

70. Insulation spring guide seat

71. Guide shaft

80. Elastic fixing seat

90. Connecting rod

91. Rod main body

92. Elastic adjusting sleeve

110. Insulating partition board

120. Insulation chute seat

121. Limiting chute

130. Conductive soft copper strip

140. Conductive surface joint

141. Conductive claw

150. Insulating sliding sleeve

160. Mounting shaft

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper", "lower", "left", "right", "middle", etc. are used herein for convenience of description, but are not to be construed as limiting the scope of the utility model, and the relative changes or modifications are not to be construed as essential to the scope of the utility model.

The present application provides a conductive structure of an intermediate electrode 10, and a seam welder comprising the conductive structure of the intermediate electrode 10, the conductive structure related to the present application is used for conducting electricity to the intermediate electrode 10. As shown in fig. 1 and 2, the intermediate electrode 10 includes an electrode disk 102, and a core beam 101 fixed in the middle of the electrode disk 102. The middle electrode 10 is distributed in a bar penetrating device in the seam welder, after a plurality of main bars penetrate the bar penetrating device, the plurality of main bars pass through the outer peripheral surface of the electrode disc 102 of the middle electrode 10, and the end parts of the plurality of main bars are fixed in a locking plate at the end part of a traction trolley in the seam welder. During the roll welding operation, the intermediate electrode 10 is positioned in a main reinforcement cage formed by a plurality of main reinforcements, the traction trolley forwards tows the main reinforcement cage, a power supply is electrically connected with the intermediate electrode 10 through a conductive structure, the intermediate electrode 10 is electrified, the electricity is conducted to the main reinforcement cage contacted with the outer peripheral surface of the electrode plate 102, and then the spiral reinforcement is roll welded on the outer periphery of the main reinforcement cage.

As shown in fig. 1 to 3, the conductive structure of the intermediate electrode 10 according to the present utility model includes a support base 20 fixedly provided, a conductive copper bar 30 mounted on the support base 20, a chuck 40 mounted on the support base 20, a conductive rod 50, and a force applying member mounted on the support base 20, the chuck 40 being for holding the core beam 101 of the intermediate electrode 10, the conductive copper bar 30 being electrically connected to the conductive rod 50, the conductive rod 50 being movably mounted in the support base 20, the force applying member acting on the conductive rod 50, the force applying member applying a force to the conductive rod 50 in a moving direction of the conductive rod 50 toward the core beam 101, so that the conductive rod 50 is brought into contact with the core beam 101. After the intermediate electrode 10 is mounted on the chuck 40, the chuck 40 clamps the core beam 101 of the intermediate electrode 10; under the action of the force application component, the conductive rod 50 is in contact with the central guide post 101 of the intermediate electrode 10, electricity is sequentially conducted to the central guide post 101 through the conductive copper bar 30 and the conductive rod 50, so that the intermediate electrode 10 is electrified integrally, the intermediate electrode 10 conducts electricity to the main reinforcement cage, and the seam welder performs seam welding operation.

In the conductive structure, the force applied to the conductive rod 50 by the force applying component along the moving direction of the conductive rod 50 towards the central guide post 101 ensures that the conductive rod 50 and the central guide post 101 are always in close contact, the contact reliability between the conductive rod 50 and the central guide post 101 is ensured, the conductive reliability of the conductive rod 50 towards the central guide post 101 is ensured, and finally the welding quality between the main rib and the spiral rib is ensured. Meanwhile, the conductive rod 50 and the intermediate electrode 10 can be automatically separated and pressed for conduction, which is a necessary condition for realizing the automation of the intermediate electrode 10. In addition, in the application, the conductive rod 50 is only used for conducting electricity, is not used as a stressed component, is favorable for making the conductive rod 50 small, and can realize insulation between the conductive rod 50 and the supporting seat 20, so that energy waste is avoided.

Further, as shown in fig. 1 and 2, the conductive rod 50 extends straight, and the central axis of the conductive rod 50 is collinear with the central axis of the core beam 101, so that the conductive rod 50 extends axially back and forth, and the conductive rod 50 is distributed on the rear end side of the core beam 101 of the intermediate electrode 10. The conductive rod 50 is mounted in the support base 20 so as to be movable forward and backward in the axial direction thereof, and the front end surface of the conductive rod 50 is in surface contact engagement with the rear end surface of the core beam 101. Preferably, as shown in fig. 2 and 3, the force applying member is a spring 60, the rear end of the spring 60 is fixed, and the front end of the spring 60 is connected to the rear end of the conductive rod 50; in a state where the chuck 40 clamps the core beam 101, the spring 60 is in a compressed state, and the spring 60 applies a forward urging force to the conductive rod 50 so that the front end surface of the conductive rod 50 is closely attached to the rear end surface of the core beam 101.

Further, as shown in fig. 2 and 3, the conductive structure of the intermediate electrode 10 further includes an insulating elastic guide 70 fixed at the back end of the conductive rod 50, an elastic fixing seat 80 fixed on the back end surface of the support seat 20, and a connecting rod 90 extending back and forth, the front end of the spring 60 abuts against the back end surface of the insulating elastic guide 70, the back end of the spring 60 is fixed with the front end of the connecting rod 90, and the back end of the connecting rod 90 is fixed with the elastic fixing seat 80. In this way, the spring 60 applies a forward force to the conductive rod 50 through the insulating elastic guide 70, and the insulating elastic guide 70 insulates between the conductive rod 50 and the spring 60. Preferably, the rear end surface of the insulating bullet guide 70 is provided with a guide shaft portion 71 protruding axially rearward, and the front end of the spring 60 is fitted over the outer periphery of the guide shaft portion 71. In particular, the connecting rod 90 includes a rod body portion 91 extending in the front-rear direction, and an elastic adjustment sleeve 92 screwed to the outer periphery of the rod body portion 91, and the rear end of the spring 60 is fixed to the outer periphery of the elastic adjustment sleeve 92. Because the elastic adjusting sleeve 92 is in threaded connection with the rod main body 91, the front and rear positions of the elastic adjusting sleeve 92 on the rod main body 91 are adjustable, so that the rear end position of the spring 60 can be adjusted front and rear, and the force of the spring 60 is further adjusted.

Further, as shown in fig. 1, 2 and 4, a mounting shaft 160 parallel to the conductive rod 50 is mounted in the support base 20, and the chuck 40 is fixed to the front end of the mounting shaft 160 facing the intermediate electrode 10, and the chuck 40 is insulated from the mounting shaft 160. The conductive rod 50 is inserted into the mounting shaft 160, and is also arranged in an insulating manner between the conductive rod 50 and the mounting shaft 160. The supporting seat 20 comprises a lower supporting base 21 fixedly arranged, and an upper clamping seat 22 buckled on the lower supporting base 21, wherein the upper clamping seat 22 is detachably connected with the lower supporting base 21 through a plurality of bolts, and the mounting shaft 160 is assembled between the lower supporting base 21 and the upper clamping seat 22. In this way, the upper clamping seat 22 can be detached through the detachable connection between the upper clamping seat 22 and the lower supporting base 21, so that the overhaul of the parts in the supporting seat 20 is facilitated. Preferably, the conductive structure of the intermediate electrode 10 further includes an insulation slip 150 fixed in the lower support base 21, the conductive rod 50 is movably penetrated in the insulation slip 150 back and forth, and the insulation slip 150 is distributed at the rear side of the installation shaft 160. The conductive rod 50 is loose in the insulating sliding sleeve 150, and the conductive rod 50 is easily attached to the rear end surface of the core beam 101 under the action of the spring 60, so that stable conduction is performed.

Further, as shown in fig. 1, 2 and 4, the chuck 40 includes a chuck body 41, and a plurality of radially movable jaws 42 fitted in the chuck body 41; the chuck body 41 is fixedly coupled with the flange portion of the front end of the mounting shaft 160, thereby integrally fixing the chuck 40 at the front end of the mounting shaft 160; a clamping cavity for accommodating the central guide post 101 is formed between the clamping jaws 42, and clamping and loosening of the central guide post 101 of the intermediate electrode 10 are realized through radial movement of the clamping jaws 42. In this embodiment, three clamping jaws 42 are provided, and the three clamping jaws 42 are circumferentially spaced at 120 ° intervals, so that the chuck 40 is a three-jaw chuck 40.

Preferably, as shown in fig. 1, 2 and 4, the chuck body 41 is provided with a radial chute 411 at each jaw 42, the jaw 42 includes a jaw seat 422 slidably fitted with the radial chute 411, and a jaw body 423 fixed to the jaw seat 422, and a clamping cavity is formed between the jaw bodies 423 of the plurality of jaws 42. The jaw seat 422 and the jaw body 423 are preferably secured by a plurality of screws. The clamping jaw seat 422 is provided with a pair of guide grooves 424 extending in radial direction on the outer surfaces of the opposite distribution, and the chuck main body 41 is provided with guide convex strips 412 matched with the guide grooves 424 in a guiding manner on the groove wall of the radial sliding groove 411. In particular, as shown in fig. 2 and 5, the end face of the jaw body 423 of the jaw 42 facing the clamping cavity is provided with a V-shaped positioning portion 421 protruding toward the clamping cavity, and the V-shaped positioning portion 421 is for being engaged in the V-shaped annular groove 103 on the outer periphery of the core beam 101. On the one hand, when clamping the central guide post 101 of the intermediate electrode 10, the three clamping jaws 42 of the chuck 40 play a role in axial positioning through the matching of the V-shaped positioning part 421 and the V-shaped annular groove 103; on the other hand, the core beam 101 of the intermediate electrode 10 presses the conductive rod 50 backward, and thus presses the spring 60, so that the spring 60 maintains a pressure, that is, the front end surface of the conductive rod 50 and the rear end surface of the core beam 101 are in good contact.

Further, as shown in fig. 4 and 5, the conductive structure of the intermediate electrode 10 further includes an insulating partition 110 and an insulating chute base 120 both fixed on the supporting base 20, the insulating partition 110 is distributed on the lower side of the insulating chute base 120, the conductive copper bar 30 includes a first copper bar 31 extending in a bending manner and a second copper bar 32 extending vertically, the first copper bar 31 is fixed to the lower end of the second copper bar 32, the upper end of the second copper bar 32 is fixed to the conductive rod 50, the second copper bar 32 is fixed to the insulating partition 110, the insulating partition 110 is distributed between the second copper bar 32 and the supporting base 20, a limiting chute 121 penetrating up and down is provided in the insulating chute base 120, the width of the limiting chute 121 in the front-rear direction is larger than the width of the second copper bar 32, and the second copper bar 32 is allowed to slide back and forth in the limiting chute 121. Preferably, the connection structure between the second copper bar 32 and the conductive rod 50 is: as shown in fig. 4 to 6, the conductive copper bar 30 further includes a copper intermediate plate 33 fixed between the second copper bar 32 and the conductive rod 50, and a connection groove 51 for accommodating the copper intermediate plate 33 is formed on the outer peripheral surface of the conductive rod 50, the bottom surface of the connection groove 51 is a vertical plane, and the copper intermediate plate 33 is in surface contact with the second copper bar 32 and the bottom surface of the connection groove 51, so as to improve the conductive reliability.

Further, as shown in fig. 2, 4 and 5, the conductive structure of the intermediate electrode 10 further includes a plurality of conductive soft copper strips 130 and a conductive surface connector 140 fixed at the front end of the conductive rod 50, the conductive surface connector 140 is provided with a plurality of conductive claws 141 distributed between the jaw main bodies 423 of the adjacent two jaws 42, and the number of conductive soft copper strips 130 and the number of conductive claws 141 on the conductive surface connector 140 are the same as the number of the jaws 42 on the chuck 40, and are three. The clamping jaw 42 and the conductive claws 141 distributed on the same circumferential side of the clamping jaw 42 are electrically connected by a conductive soft copper strip 130: namely: each jaw 42 is electrically connected to a conductive jaw 141 disposed on the counterclockwise side of the jaw 42 in the counterclockwise direction of the chuck 40 by a conductive soft copper strap 130; alternatively, each jaw 42 is electrically connected to conductive fingers 141 disposed on a clockwise side of the jaw 42 in a clockwise direction of the chuck 40 by a conductive soft copper ribbon 130. Thus, the conductive rod 50 conducts electricity to the core beam 101 of the intermediate electrode 10 in two ways: one path is that the front end surface of the conductive rod 50 is in contact fit conduction with the rear end surface of the central guide post 101, and the other path is that the conductive rod 50 is in contact fit conduction to the outer peripheral surface of the central guide post 101 sequentially through the conductive surface connector 140, the conductive claw 141, the conductive soft copper strip 130 and the clamping jaw main body 423. Thus, the conduction reliability between the conductive rod 50 and the core beam 101 is greatly improved.

In summary, the present utility model effectively overcomes the disadvantages of the prior art and has high industrial utility value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (10)

1. The utility model provides a conductive structure of middle electrode, includes supporting seat (20) of fixed setting, installs conductive copper bar (30) on supporting seat (20) and installs chuck (40) on supporting seat (20), chuck (40) are used for centre gripping center pillar (101) of middle electrode (10), its characterized in that: the novel electric conduction device is characterized by further comprising a conductive rod (50) and a force application component arranged on the supporting seat (20), wherein the conductive copper bar (30) is electrically connected with the conductive rod (50), the conductive rod (50) is movably arranged in the supporting seat (20), the force application component acts on the conductive rod (50), and the force application component applies a force towards the central guide column (101) to the conductive rod (50) along the moving direction of the conductive rod (50) so as to enable the conductive rod (50) to be in contact with the central guide column (101).

2. The conductive structure of the intermediate electrode according to claim 1, wherein: the chuck (40) comprises a chuck body (41) and a plurality of clamping jaws (42) which are radially movable and assembled in the chuck body (41), the clamping jaws (42) are used for clamping the periphery of the central guide column (101), the conductive surface joint (140) is provided with a plurality of conductive claws (141) distributed between two adjacent clamping jaws (42), and the clamping jaws (42) are connected with the conductive claws (141) distributed on the same circumferential side of the clamping jaws (42) through one conductive soft copper belt (130).

3. The conductive structure of the intermediate electrode according to claim 1, wherein: the central axis of the conductive rod (50) is collinear with the central axis of the central guide post (101), the conductive rod (50) is movably arranged in the supporting seat (20) along the axial direction of the conductive rod, and the end face of the conductive rod (50) is in surface contact fit with the end face of the central guide post (101).

4. A conductive structure of an intermediate electrode according to claim 3, characterized in that: the force application component is a spring (60), one end of the spring (60) is fixed, and the other end of the spring (60) is connected with one end of the conductive rod (50) opposite to the central guide post (101).

5. The conductive structure of the intermediate electrode according to claim 4, wherein: the novel electric power device is characterized by further comprising an insulating elastic guide seat (70) fixed at one end of the conductive rod (50) opposite to the central guide column (101), an elastic fixing seat (80) fixed on the supporting seat (20) and a connecting rod (90), wherein two ends of the connecting rod (90) are respectively fixed with one end of the spring (60) and the elastic fixing seat (80), and the other end of the spring (60) is abutted to the insulating elastic guide seat (70).

6. The conductive structure of the intermediate electrode according to claim 5, wherein: the connecting rod (90) comprises a rod main body part (91) and an elastic adjusting sleeve (92) which is connected with the periphery of the rod main body part (91) in a threaded mode, and one end of the spring (60) is fixed to the periphery of the elastic adjusting sleeve (92).

7. The conductive structure of the intermediate electrode according to claim 1, wherein: still including all be fixed in insulating baffle (110) and insulating spout seat (120) of supporting seat (20), electrically conductive copper bar (30) are including first copper bar (31) that bend and extend to and vertical second copper bar (32) that extend, first copper bar (31) are fixed mutually with the lower extreme of second copper bar (32), the upper end of second copper bar (32) is fixed mutually with conducting rod (50), second copper bar (32) are fixed mutually with insulating baffle (110), insulating baffle (110) distribute between second copper bar (32) and supporting seat (20), be equipped with spacing spout (121) that link up from top to bottom in insulating spout seat (120), second copper bar (32) wear to establish in spacing spout (121).

8. The conductive structure of the intermediate electrode according to claim 7, wherein: the conductive copper bar (30) further comprises an intermediate copper plate (33) fixedly arranged between the second copper bar (32) and the conductive rod (50), a connecting groove (51) for accommodating the intermediate copper plate (33) is formed in the outer peripheral surface of the conductive rod (50), the bottom surface of the connecting groove (51) is a vertical plane, and the bottom surfaces of the intermediate copper plate (33) and the second copper bar (32) are in surface contact with the bottom surface of the connecting groove (51).

9. The conductive structure of the intermediate electrode according to claim 1, wherein: the electric conduction rod (50) is movably arranged in the insulating sliding sleeve (150) in a penetrating mode.

10. The conductive structure of the intermediate electrode according to claim 1, wherein: the chuck (40) comprises a chuck main body (41) and a plurality of clamping jaws (42) which can be radially moved and are assembled in the chuck main body (41), clamping cavities for accommodating the central guide posts (101) are formed among the clamping jaws (42), V-shaped positioning portions (421) protruding towards the clamping cavities are arranged on the end faces of the clamping jaws (42) facing the clamping cavities, and the V-shaped positioning portions (421) are used for being clamped in V-shaped annular grooves (103) in the peripheries of the central guide posts (101).

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