CN111331236A

CN111331236A - Automatic electrode cap replacing equipment for welding robot

Info

Publication number: CN111331236A
Application number: CN201811552267.6A
Authority: CN
Inventors: 周小川; 李铁成; 陈令; 耿春雷; 陈传强
Original assignee: SAIC GM Wuling Automobile Co Ltd
Current assignee: SAIC GM Wuling Automobile Co Ltd
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2020-06-26

Abstract

The invention discloses automatic electrode cap replacing equipment for a welding robot, wherein a disassembling part is detachably and fixedly connected to the front side of an accessory part, a driving gear is driven by a driving device and meshed with the outer side of a double-layer toothed plate, the periphery of a clamping jaw is meshed with the inner side of the double-layer toothed plate, a rotating shaft penetrates through the center of the clamping jaw, a resistance increasing block is detachably and fixedly connected to the outer side of the front end part of the lower part of a lower plate, a first baffle is frictionally clamped between the upper part of the resistance increasing block and the outer lower part of the front end part of the lower plate, the first baffle is rotatably connected into the front end part of the lower plate, a second baffle is rotatably connected into the. The automatic electrode cap replacing equipment for the welding robot realizes automatic disassembly of the electrode cap of the welding robot; the single detachable part can be compatible with electrode caps with different diameters at the same time, and welding robots using the electrode caps with different diameters can share one device; the single disassembly part can be compatible to disassemble the upper electrode cap and the lower electrode cap.

Description

Automatic electrode cap replacing equipment for welding robot

Technical Field

The invention relates to a replacing device, in particular to an automatic replacing device for an electrode cap of a welding robot.

Background

The existing part of welding robots disassemble the electrode caps by manual disassembly and rotary automatic disassembly. Manual disassembly presents problems, (one) requiring personnel to enter the robot area every day; and (II) the electrode cap is replaced regularly, so that the complete life cycle of the electrode cap cannot be fully used. The rotary automatic disassembly has some problems, namely, only a single electrode cap can be disassembled by a single disassembly component; and each set of dismounting device must comprise two sets of dismounting parts, so that the occupied space is large, the structure is complex, and the failure rate is high.

The existing part of welding robot electrode cap installation is manual installation, which has some problems, namely, the problem of manual disassembly; and (II) the hammer is required to knock the electrode cap, so that the service life of the electrode arm is greatly influenced. The existing part of welding robot electrode caps are automatically stored through automatic cartridge clip storage and automatic rotary disc storage. The cartridge clip type automatic storage has the problems of complex structure, high failure rate, easy occurrence of failure of electrode cap transportation and electrode cap clamping. The rotary disk type automatic storage has the problems of complex structure, high failure rate, poor accuracy consistency of the installation position of the electrode cap and poor reliability of the electrode cap checking.

Disclosure of Invention

The invention is accomplished in order to solve the deficiency in the prior art, the purpose of the invention is to provide an automatic replacement apparatus of welding robot electrode cap, its advantage is to realize the automatic disassembly of welding robot electrode cap, installation, does not need the manual work to participate in, safer, eliminate the human cost; the single detachable part can be compatible with electrode caps with different diameters at the same time, and welding robots using the electrode caps with different diameters can share one device, so that the device consumption is reduced; the posture of the welding robot does not need to be adjusted, and the upper electrode cap and the lower electrode cap can be compatibly disassembled by a single disassembling part; the success rate of single disassembly is obviously improved, the stoppage of a welding production line of a body in white caused by the unsuccessful replacement of an electrode cap is reduced, and the economic loss is reduced.

The invention relates to automatic electrode cap replacing equipment for a welding robot, which comprises a disassembling part and an accessory part, wherein the disassembling part is detachably and fixedly connected to the front side of the accessory part, the disassembling part comprises an upper plate, a lower plate, a driving gear, a double-layer toothed plate, a first baffle plate, a second baffle plate, a resistance increasing block and at least three clamping jaws, the driving gear is rotatably connected between the rear side of the upper part of the first baffle plate and the rear side of the lower part of the second baffle plate, the driving gear is driven by a driving device and is meshed with the outer side of the double-layer toothed plate, the periphery of each clamping jaw is meshed with the inner side of the double-layer toothed plate, a rotating shaft penetrates through the center of each clamping jaw, the first baffle plate is positioned at the bottom end of the double-layer toothed plate and is detachably and fixedly connected with the bottom end of the rotating shaft, the second baffle plate, the resistance increasing block is detachably and fixedly connected to the outer side of the front end of the lower portion of the lower plate, the first baffle is clamped between the upper portion of the resistance increasing block and the outer lower portion of the front end of the lower plate in a friction mode, the first baffle is rotatably connected to the inner side of the front end of the lower plate, the second baffle is rotatably connected to the inner side of the front end of the upper plate, and the electrode cap can be clamped between the opposite faces of the clamping jaws in a releasing mode.

The automatic electrode cap replacing equipment for the welding robot, disclosed by the invention, can also comprise:

the jack catch includes the jack catch body, the pivot hole has been seted up in the middle of the jack catch body, the jack catch body encircles clockwise in proper order and is equipped with drive tooth, resistance tooth, arc dodge the face, dismantles tooth and resistance face, the drive tooth is one at least, resistance tooth is located outside the drive tooth side, the arc dodge towards the pivot hole indent, the arc dodge the face be located drive tooth with dismantle between the tooth, the resistance face is located the drive tooth other end with dismantle between the tooth, drive tooth with the inboard meshing of double-deck pinion rack is connected, and is adjacent dismantle the tooth with the formula that can be relieved of electrode cap presss from both sides establishes and is connected, the rotation axis is worn to locate downthehole.

The tooth top width of the stopping teeth is larger than that of the driving teeth.

The detachable part comprises a first copper sleeve and a second copper sleeve, the double-layer toothed plate is clamped and rotationally connected in the first copper sleeve inner wall, the double-layer toothed plate upper end is clamped and rotationally connected in the second copper sleeve inner wall, the first copper sleeve outer wall is clamped and connected in the lower plate front side end part, the second copper sleeve outer wall is clamped and connected in the upper plate front side end part, the first baffle is located in the first copper sleeve, and the second baffle is located in the second copper sleeve.

An expandable storage part is detachably and fixedly connected to the detachable part, and the expandable storage part is located on the front side of the detachable part.

The expandable storage part comprises an upper storage part, the upper storage part comprises at least one upper first clamping claw electrode, at least one upper second clamping claw electrode, a mounting plate and at least one detection switch, the upper first clamping claw electrode and the upper second clamping claw electrode are fixedly connected to the upper portion of the mounting plate in an all detachable mode, a fixing plate is fixedly connected to the mounting plate in a detachable mode, the right side of the fixing plate or/and the right side of the upper second clamping claw electrode is elastically abutted to the left side of the upper first clamping claw electrode, an electrode cap is clamped between the right side of the upper first clamping claw electrode and the left side of the upper second clamping claw electrode, an opening of the electrode cap faces upwards, the rear portion of the upper second clamping claw electrode is connected with the detection switch through a bolt, and the detection switch is in inductive contact with the electrode cap.

The right side of the fixed plate or/and the right side of the upper second embracing claw electrode and the left side of the upper first embracing claw electrode are/is provided with a spring, the left end of the spring is elastically abutted against the right side of the fixed plate or/and the right side of the upper second embracing claw electrode, and the right end of the spring is elastically abutted against the left side of the upper first embracing claw electrode.

Go up first embracing and be provided with first arcwall face on the claw electrode right side, it is adjacent go up the second and embrace and be provided with the second arcwall face on the claw electrode left side, go up first arcwall face with go up the relative setting of second arcwall face, electrode cap releasable clamp is located go up first arcwall face with go up between the second arcwall face.

The expandable storage part comprises a lower storage part, the lower storage part comprises at least one lower first embracing claw electrode, at least one lower second embracing claw electrode, a base mounting plate and a dustproof plate, the lower first embracing claw electrode and the lower second embracing claw electrode are both detachably and fixedly connected to the bottom of the mounting plate, the dustproof plate is fixedly connected to the upper portion of the front end of the base mounting plate and positioned at the lower portions of the lower first embracing claw electrode and the lower second embracing claw electrode, the base mounting plate is detachably and fixedly connected to the front side of the disassembling part, the left side of the fixing plate or/and the left side of the lower second embracing claw electrode elastically abut against the right side of the adjacent lower first embracing claw electrode, the electrode cap is clamped between the left side of the lower first embracing claw electrode and the right side of the lower second embracing claw electrode, the opening of the electrode cap faces downwards, and the rear portion of the lower second embracing claw electrode is in threaded connection with, the detection switch is in inductive contact with the electrode cap.

The lower first arc-shaped surface is arranged on the left side of the lower first holding claw electrode, the lower second arc-shaped surface is arranged on the right side of the lower second holding claw electrode, the lower first arc-shaped surface and the lower second arc-shaped surface are arranged oppositely, and the electrode cap can be clamped between the lower first arc-shaped surface and the lower second arc-shaped surface in a removable manner.

The invention relates to automatic electrode cap replacing equipment for a welding robot, which comprises a disassembling part and an accessory part, wherein the disassembling part is detachably and fixedly connected to the front side of the accessory part, the disassembling part comprises an upper plate, a lower plate, a driving gear, a double-layer toothed plate, a first baffle plate, a second baffle plate, a resistance increasing block and at least three clamping jaws, the driving gear is rotatably connected between the rear side of the upper part of the first baffle plate and the rear side of the lower part of the second baffle plate, the driving gear is driven by a driving device and is meshed with the outer side of the double-layer toothed plate, the periphery of each clamping jaw is meshed with the inner side of the double-layer toothed plate, a rotating shaft penetrates through the center of each clamping jaw, the first baffle plate is positioned at the bottom end of the double-layer toothed plate and is detachably and fixedly connected with the bottom end of the rotating shaft, the second baffle plate, the resistance increasing block is detachably and fixedly connected to the outer side of the front end of the lower portion of the lower plate, the first baffle is clamped between the upper portion of the resistance increasing block and the outer lower portion of the front end of the lower plate in a friction mode, the first baffle is rotatably connected to the inner side of the front end of the lower plate, the second baffle is rotatably connected to the inner side of the front end of the upper plate, and the electrode cap can be clamped between the opposite faces of the clamping jaws in a releasing mode. Thus, the accessory part is used for connecting the detachable part and providing an installation position for the detachable part; meanwhile, the connection between the accessory part and the dismounting part can be released, and the mounting and the dismounting are convenient. The disassembly part is arranged at the front end of the accessory part and used for realizing automatic disassembly and assembly of the welding robot electrode cap. The outer side of the double-layer toothed plate is provided with outer teeth, and the inner side of the double-layer toothed plate is provided with inner teeth. The number of the claws is three or more, and can be set according to the actual situation. Drive gear is located between first baffle upper portion rear side portion and the second baffle lower part rear side portion, and drive arrangement's drive shaft and drive gear center pin are connected, and drive arrangement drives drive gear rotatory, and drive gear is connected with double-deck pinion rack external tooth meshing, drives double-deck pinion rack and rotates. The jack catch is located double-deck pinion rack, and the jack catch is connected with double-deck pinion rack internal tooth meshing. A rotating shaft penetrates through the center of the clamping jaw, and the clamping jaw can rotate around the rotating shaft. First baffle is located double-deck pinion rack bottom, and first baffle is connected with the rotation axis bottom, also can relieve and be connected between first baffle and the rotation axis bottom, easy to assemble and dismantlement. The second baffle is located double-deck pinion rack top, and the second baffle is connected with the rotation axis top, also can relieve the second baffle and be connected between the rotation axis, easy to assemble and dismantle. First baffle and second baffle are used for installing the rotation axis for the jack catch can be connected inside double-deck pinion rack. The resistance increasing block is connected to the outside of the front end part of the lower plate, and can also be disconnected with the lower plate, so that the installation and the disassembly are convenient. The resistance increasing block is in a semi-arc shape, the outer edge of the first baffle plate is clamped by the upper surface of the resistance increasing block and the lower surface of the lower plate, continuous dynamic friction force is provided, and the first baffle plate is prevented from rotating. The first baffle is rotatably connected in the front end part of the lower plate, and the second baffle is rotatably connected in the front end part of the upper plate. The clamping claws can clamp the electrode cap and can also release the connection with the electrode cap. When the baffle plate works, in an initial state, due to the friction force of the lower surface of the lower plate and the upper surface of the resistance increasing block to the outer edge of the first baffle plate, the first baffle plate is static, and the second baffle plate and the rotating shaft are also static. When the driving device drives the driving gear to rotate, the driving gear drives the double-layer toothed plate to rotate, the internal teeth of the double-layer toothed plate drive the clamping jaws to rotate along the rotating shaft, and the second baffle, the first baffle and the rotating shaft are still static; when the clamping jaws rotate, gaps among the clamping jaws are smaller and smaller until the electrode caps in the gaps are clamped (the electrode caps rotate until the positive limit of the clamping jaws when the electrode caps do not exist), and the clamping jaws apply clamping and rotating force to the electrode caps because the electrode caps are static; when the clamping force of the clamping jaws on the electrode cap is enough, the clamping jaws unscrew the electrode cap from the static robot electrode arm, and at the moment, the clamping jaws also drive the rotating shaft, the second baffle and the first baffle to rotate along the axis of the double-layer toothed plate. At the moment, the outer edge of the first baffle plate is clamped by the upper surface of the resistance increasing block and the lower surface of the lower plate to provide continuous kinetic friction force, then the robot leaves, the electrode arm is separated from the electrode cap, the clamping jaw clamps the electrode cap to rotate continuously in the process, and the driving device stops rotating after the robot leaves a safe area. The driving device rotates reversely, the driving gear is driven to rotate, the driving gear drives the double-layer toothed plate to rotate, the inner teeth of the double-layer toothed plate drive the clamping jaws to rotate along the rotating shaft, the second baffle, the first baffle and the rotating shaft are still static at the initial stage of reverse rotation, when the clamping jaws rotate, gaps among the clamping jaws are larger and larger, electrode caps clamped in the gaps are loosened, the electrode caps fall in a water receiving disc of the accessory part, the clamping jaws continue to rotate until the clamping jaws rotate to a negative limit state, the upper surface of the resistance increasing block and the lower surface of the lower plate clamp the outer edge of the first baffle in the process, continuous static friction force is provided, when the clamping jaws rotate to the negative limit state, the torque of the driving device can be transmitted to the rotating shaft, the second baffle and the first baffle through the driving gear, the double-layer toothed plate and the clamping jaws, when the driving force is larger than the static friction force, the rotating shaft, the second baffle and, and continuously rotating until the driving device stops, and further completing the automatic electrode cap dismounting process. Through dismantling the vertical setting of part setting at upper plate and hypoplastron front end portion and double-deck pinion rack for the electrode cap can get into from the top and dismantle the part, also enables the electrode cap simultaneously and gets into from the below and dismantle the part, and then need not to adjust welding robot posture, and the electrode cap that distributes about single dismantlement part can the compatible dismantlement. Through setting up the rotation between jack catch structure and the jack catch, the space between the jack catch reduces gradually or grow gradually, can compatible different diameter's electrode cap, and the welding robot that uses different diameter electrode caps can share an equipment, reduces the equipment quantity. Through increasing the resistance-increasing piece and rotatory self-locking jack catch in the dismantlement part, the single dismantlement success rate is showing and is improving, reduces to weld the production line and stop because of the white automobile body that the electrode cap was changed unsuccessful and causes, reduces economic loss. Compared with the prior art, the automatic electrode cap replacing equipment for the welding robot has the advantages that: the automatic disassembly and assembly of the welding robot electrode cap are realized, the manual participation is not needed, the safety is higher, and the labor cost is eliminated; the single detachable part can be compatible with electrode caps with different diameters at the same time, and welding robots using the electrode caps with different diameters can share one device, so that the device consumption is reduced; the posture of the welding robot does not need to be adjusted, and the upper electrode cap and the lower electrode cap can be compatibly disassembled by a single disassembling part; the success rate of single disassembly is obviously improved, the stoppage of a welding production line of a body in white caused by the unsuccessful replacement of an electrode cap is reduced, and the economic loss is reduced.

Drawings

FIG. 1 is an overall schematic of the present invention.

Figure 2 is an exploded view of the detachable portion of the present invention.

Figure 3 is a schematic view of a removable portion of the present invention.

Figure 4 is a schematic cross-sectional view of a removable portion of the present invention.

Figure 5 plan view of the jaws of the present invention.

Figure 6 is a schematic view of the jaw movement of the present invention.

Figure 7 is another schematic view of the movement of the jaws of the present invention.

Fig. 8 is an exploded view of an expandable storage section of the present invention.

FIG. 9 is a schematic diagram of an expandable memory portion of the present invention.

FIG. 10 is a partial schematic diagram of the expandable memory portion of the present invention.

Description of the figures

1. A detachable portion; 11. an upper plate; 12. a lower plate; 13. a drive gear; 14. a double-layer toothed plate; 15. a first baffle plate; 16. a second baffle; 17. a resistance increasing block; 18. a claw; 181. a rotating shaft hole; 182. a drive tooth; 183. a blocking tooth; 184. an arc-shaped avoiding surface; 185. disassembling the teeth; 186. a resistance surface; 19. a drive device; 20. a rotating shaft; 2. an attachment portion; 3. an electrode cap; 4. an expandable storage section; 41. an upper first holding claw electrode; 411. an upper first arc-shaped surface; 42. an upper second holding claw electrode; 421. an upper second arc-shaped surface; 43. mounting a plate; 44. a detection switch; 45. a spring; 46. a lower first holding claw electrode; 461. a lower first arc-shaped surface; 47. a lower second holding claw electrode; 471. a lower second arc-shaped surface; 48. a base mounting plate; 49. a dust guard.

Detailed Description

An automatic electrode cap replacing apparatus for a welding robot according to the present invention will be described in further detail with reference to fig. 1 to 10 of the accompanying drawings.

Referring to the figures related to fig. 1 to 10, the automatic electrode cap replacing device for the welding robot of the present invention includes a disassembling part 1 and an accessory part 2, wherein the disassembling part 1 is detachably and fixedly connected to the front side of the accessory part 2, the disassembling part 1 includes an upper plate 11, a lower plate 12, a driving gear 13, a double-layer toothed plate 14, a first baffle plate 15, a second baffle plate 16, a resistance increasing block 17, and at least three clamping jaws 18, the driving gear 13 is rotatably connected between the rear side of the upper portion of the first baffle plate 15 and the rear side of the lower portion of the second baffle plate 16, the driving gear 13 is driven by a driving device 19 and is engaged with the outer side of the double-layer toothed plate 14, the periphery of the clamping jaw 18 is engaged with the inner side of the double-layer toothed plate 14, a rotating shaft 20 is penetrated through the center of the clamping jaw 18, the first baffle plate 15 is located at the bottom end of the double-layer toothed, the second baffle 16 is located the double toothed plate 14 top and its with the detachable fixed connection in rotation axis 20 top, increase the detachable fixed connection in of resistance block 17 outside the lower part front end of hypoplastron 12, first baffle 15 friction type clamp is located increase between resistance block 17 upper portion and the lower part outside the lower part of the lower part 12 front end, first baffle 15 rotate connect in the lower plate 12 front end in, the second baffle 16 rotate connect in the upper plate 11 front end in, the removable clamp of electrode cap sets up in between the dog 18 opposite face. Thus, the attachment portion 2 is used to attach the detachable portion 1, providing an attachment location for the detachable portion 1; meanwhile, the connection between the accessory part 2 and the dismounting part 1 can be released, and the mounting and dismounting are convenient. The disassembly part 1 is arranged at the front end of the accessory part 2, and the disassembly part 1 is used for realizing automatic disassembly and assembly of the welding robot electrode cap 3. The outer side of the double-layer toothed plate 14 is provided with outer teeth, and the inner side is provided with inner teeth. The number of the claws 18 is three or more, and can be set according to actual conditions. The driving gear 13 is located between the rear side portion of the upper portion of the first baffle 15 and the rear side portion of the lower portion of the second baffle 16, a driving shaft of the driving device 19 is connected with a central shaft of the driving gear 13, the driving device 19 drives the driving gear 13 to rotate, and the driving gear 13 is meshed with the outer teeth of the double-layer toothed plate 14 to drive the double-layer toothed plate 14 to rotate. The clamping jaws 18 are positioned in the double-layer toothed plate 14, and the clamping jaws 18 are in meshed connection with the inner teeth of the double-layer toothed plate 14. A rotating shaft 20 is arranged in the center of the clamping jaw 18 in a penetrating mode, and the clamping jaw 18 can rotate around the rotating shaft 20. First baffle 15 is located double-deck pinion rack 14 bottom, and first baffle 15 is connected with rotation axis 20 bottom, also can relieve and be connected between first baffle 15 and the rotation axis 20 bottom, easy to assemble and dismantlement. The second baffle 16 is located double-deck pinion rack 14 top, and second baffle 16 is connected with the rotation axis 20 top, also can remove the second baffle 16 and rotate the connection between the axle 20, easy to assemble and dismantlement. The first and

second shutters

15 and 16 are used to mount the rotary shaft 20 so that the jaws 18 can be coupled inside the double-layered toothed plate 14. The resistance increasing block 17 is connected to the outside of the front end part of the lower plate 12, and can also be disconnected with the lower plate 12, thereby being convenient for installation and disassembly. The resistance increasing block 17 is in a semi-arc shape, the upper surface of the resistance increasing block 17 and the lower surface of the lower plate 12 clamp the outer edge of the first baffle plate 15, continuous dynamic friction force is provided, and the first baffle plate 15 is prevented from rotating. The first shutter 15 is pivotally connected to the front end of the lower plate 12, and the second shutter 16 is pivotally connected to the front end of the upper plate 11. The claws 18 can clamp the electrode cap 3 and also can release the connection with the electrode cap 3. In operation, in the initial state, due to the friction between the lower surface of the lower plate 12 and the upper surface of the resistance increasing block 17 to the outer edge of the first baffle 15, the first baffle 15 is stationary, and the second baffle 16 and the rotating shaft 20 are also stationary. When the driving device 19 drives the driving gear 13 to rotate, the driving gear 13 drives the double-layer toothed plate 14 to rotate, the internal teeth of the double-layer toothed plate 14 drives the clamping jaws 18 to rotate along the rotating shaft 20, and at the moment, the second baffle 16, the first baffle 15 and the rotating shaft 20 are still static; when the claws 18 rotate, the gaps between the claws 18 are smaller and smaller until the electrode cap 3 in the gap is clamped (the electrode cap 3 is rotated to the positive limit position of the claws 18 without the electrode cap 3), and because the electrode cap 3 is static, the claws 18 apply clamping and rotating force to the electrode cap 3; when the claws 18 clamp the electrode cap 3 sufficiently, the claws 18 unscrew the electrode cap 3 from the stationary robot arm, and at the same time, the claws 18 drive the rotating shaft 20, the second baffle 16 and the first baffle 15 to rotate along the axis of the double-layer toothed plate 14. At this time, the upper surface of the resistance increasing block 17 and the lower surface of the lower plate 12 clamp the outer edge of the first baffle plate 15 to provide continuous kinetic friction force, then the robot leaves, the electrode arm is separated from the electrode cap 3, the clamping jaws 18 clamp the electrode cap 3 to rotate continuously in the process, and after the robot leaves a safe area, the driving device 19 stops rotating. The driving device 19 rotates reversely to drive the driving gear 13 to rotate, the driving gear 13 drives the double-layer toothed plate 14 to rotate, the internal teeth of the double-layer toothed plate 14 drives the jaws 18 to rotate along the rotating shaft 20, the second baffle 16, the first baffle 15 and the rotating shaft 20 are still static at the initial stage of reverse rotation, when the jaws 18 rotate, gaps among the jaws 18 become larger and larger, the electrode caps 3 clamped in the gaps are loosened, the electrode caps 3 fall in the water receiving tray of the accessory part 2, the jaws 18 continue to rotate until the jaws 18 rotate to a negative limit state, in the process, the upper surface of the resistance increasing block 17 and the lower surface of the lower plate 12 clamp the outer edge of the first baffle 15 to provide continuous static friction force, when the jaws 18 rotate to the negative limit state, the torque of the driving device 19 is transmitted to the rotating shaft 20, the second baffle 16 and the first baffle 15 through the driving gear 13, the double-layer toothed plate 14 and the jaws 18, when the driving force is greater than the static friction force, the rotating shaft 20, the second baffle 16 and the first baffle 15 rotate along the axis of the double-layer toothed plate 14 and continuously rotate until the driving device 19 stops, and then the automatic electrode cap 3 dismounting process is completed. Through dismantling the vertical setting of part 1 setting at

upper plate

11 and 12 front end of hypoplastron and double-deck pinion rack 14 for electrode cap 3 can get into from the top and dismantle part 1, also enables electrode cap 3 simultaneously and gets into from the below and dismantle part 1, and then need not to adjust welding robot posture, and single electrode cap 3 that distributes about dismantling part 1 can the compatible. Through setting up the rotation between the jack catch 18 structure and the jack catch 18, the space between the jack catch 18 reduces gradually or grow gradually, can compatible different diameter's electrode cap 3, and the welding robot that uses different diameter electrode caps 3 can share an equipment, reduces the equipment quantity. By adding the resistance increasing block 17 and the rotary self-locking type clamping jaws 18 on the disassembling part 1, the single disassembling success rate is obviously improved, the stop of a white vehicle body welding production line caused by the unsuccessful replacement of the electrode cap 3 is reduced, and the economic loss is reduced. Compared with the prior art, the automatic electrode cap replacing equipment for the welding robot has the advantages that: the electrode cap 3 of the welding robot can be automatically disassembled and assembled without manual participation, so that the welding robot is safer and the labor cost is eliminated; the single detachable part 1 can be compatible with the electrode caps 3 with different diameters at the same time, and welding robots using the electrode caps 3 with different diameters can share one device, so that the device consumption is reduced; the posture of the welding robot does not need to be adjusted, and the single disassembling part 1 can be used for compatibly disassembling the upper electrode cap and the lower electrode cap 3; the success rate of single disassembly is obviously improved, the stoppage of a body-in-white welding production line caused by the unsuccessful replacement of the electrode cap 3 is reduced, and the economic loss is reduced. Preferably, the number of the claws 18 is three or four or five, and the number of the claws 18 is set according to actual conditions.

Referring to the relevant figures of fig. 1 to 10, the automatic electrode cap replacing device for the welding robot of the present invention may further include that the jaw 18 includes a jaw body, a rotating shaft hole 181 is formed in the middle of the jaw body, the jaw body is sequentially provided with a driving tooth 182, a stopping tooth 183, an arc avoiding surface 184, a detaching tooth 185 and a stopping surface 186 in a clockwise direction, the driving tooth 182 is at least one, the stopping tooth 183 is located outside one side end of the driving tooth 182, the arc avoiding surface 184 is recessed toward the rotating shaft hole 181, the arc avoiding surface 184 is located between the driving tooth 182 and the detaching tooth 185, the stopping surface 186 is located between the other end of the driving tooth 182 and the detaching tooth 185, the driving tooth 182 is engaged with the inner side of the double-layer toothed plate 14, the adjacent detaching tooth 185 is detachably clamped with the electrode cap 3, the rotating shaft 20 is inserted into the rotating shaft hole 181. Thus, the spindle hole 181 is provided to pass through the rotary shaft 20 so that the jaw 18 can be coupled to the rotary shaft 20. The inner wall surface of the rotating shaft hole 181 is smooth, so that the clamping jaw 18 can rotate along the direction of the rotating shaft hole 181. The clamping and rotating body is sequentially provided with a driving tooth 182, a blocking tooth 183, an arc-shaped avoiding surface 184, a detaching tooth 185 and a blocking surface 186 in the clockwise direction. The driving teeth 182 are engaged with the inner wall of the double-layer toothed plate 14 to drive the jaws 18 to rotate. Blocking teeth 183 prevent drive teeth 182 from rotating over-position. The arc-shaped avoiding surface 184 can ensure that when the jaw 18 rotates to a certain angle, the arc-shaped avoiding surface 184 forms a coaxial circle with the arc-shaped avoiding surface 184 between other adjacent jaws 18, and a larger disassembly space of the electrode cap 3 is reserved. The disassembling teeth 185 are in an eccentric structure relative to the rotating shaft hole 181, so that the electrode caps 3 with different diameters can be clamped when the clamping jaws 18 rotate; the disassembly teeth 185 adopt a coarse-tooth and large-interval structure, so that the service life of the disassembly teeth 185 can be prolonged, and meanwhile, the electrode cap 3 is prevented from being jammed in the gap of the disassembly teeth 185 to influence the disassembly success rate. Blocking surface 186 prevents drive tooth 182 from rotating over. The number of the driving teeth 182 is one or more, and is set according to the actual situation. The stopping tooth 183 is located outside the end portion of one side of the driving tooth 182, an arc-shaped avoiding surface 184 is formed between the driving tooth 182 and the detaching tooth 185, and the arc-shaped avoiding surface 184 is arc-shaped and faces the rotating shaft hole 181. Stop surface 186 is located at the other end of drive tooth 182 and also to prevent drive tooth 182 from rotating over. The disassembly teeth 185 between the clamping claws 18 clamp the electrode cap 3 to rotate, so that the electrode cap 3 can be disassembled; the removal teeth 185 between the jaws 18 are disengaged from the cap 3 to release the cap 3 into the drip tray on the attachment portion 2. The claws 18 can realize the functions of rotating, clamping the electrode cap 3, forward rotation limiting, reverse rotation limiting and avoiding the electrode cap 3 when withdrawing. During operation, drive arrangement 19 forward rotation, drive gear 13 rotates, drive gear 13 drives double-deck pinion rack 14 rotatory, double-deck pinion rack 14's internal tooth drives jack catch 18 and rotates along rotation axis 20, when jack catch 18 is rotatory, the space between jack catch 18 is littleer and more, until pressing from both sides the electrode cap 3 in the tight space (rotating until jack catch 18 positive spacing when not having electrode cap 3), because electrode cap 3 is static, jack catch 18 gives electrode cap 3 and presss from both sides tight and rotatory power, when jack catch 18 gives electrode cap 3 clamp force enough, jack catch 18 unscrews electrode cap 3 from static robot electrode arm. When 19 antiport of drive arrangement, it is rotatory to drive gear 13, and drive gear 13 drives double-deck pinion rack 14 and rotates, and double-deck pinion rack 14's internal tooth drives jack catch 18 and rotates along rotation axis 20, and the space between jack catch 18 is bigger and bigger, loosens the electrode cap 3 of pressing from both sides tight in the space, and electrode cap 3 falls in the water collector. The angles of the jaws 18 during positive and negative limits limit the number of racks of drive teeth 182 on the chuck body, the radians of the arc-shaped avoiding surface 184 and the blocking surface 186, and the angles of the detaching teeth 185 and the blocking teeth 183. At the same time, the size of the double toothed plate 14 will also have a corresponding effect on the structure and characteristics of the jaws 18. Therefore, the structure and the characteristics on the jaw body are set according to actual conditions, and automatic disassembly and assembly of the electrode cap 3 can be ensured. The further preferred technical scheme is as follows: the top width of the stopping teeth 183 is greater than the top width of the driving teeth 182. Thus, the tip width of the blocking teeth 183 is greater than the tip width of the drive teeth 182, preventing the drive teeth 182 from over-rotating. Meanwhile, the tooth top width of the stopping tooth 183 is also larger than the existing common tooth top width.

Referring to the relevant figures of fig. 1 to 10, on the basis of the foregoing technical solution, the detaching part 1 may further include a first copper sleeve and a second copper sleeve, the double-layer toothed plate 14 is clamped and rotatably connected in an inner wall of the first copper sleeve, an upper end of the double-layer toothed plate 14 is clamped and rotatably connected in an inner wall of the second copper sleeve, an outer wall of the first copper sleeve is clamped in a front end of the lower plate 12, an outer wall of the second copper sleeve is clamped in a front end of the upper plate 11, the first baffle 15 is located in the first copper sleeve, and the second baffle 16 is located in the second copper sleeve. Thus, the first copper sleeve and the second copper sleeve are both wear-resistant rings made of copper materials. The outer wall joint of double-deck pinion rack 14 lower extreme is in first copper sheathing inner wall, but swivelling joint in first copper sheathing inner wall simultaneously. The outer wall joint of double-deck pinion rack 14 upper end is in second copper sheathing inner wall, but swivelling joint is in second copper sheathing inner wall simultaneously. The outer wall of the first copper sleeve is clamped in the front end of the lower plate 12, and the outer wall of the second copper sleeve is clamped in the front end of the upper plate 11, so that the first copper sleeve can be connected to the lower plate 12, and the second copper sleeve can be connected to the upper plate 11. A first baffle 15 is located within the first copper sleeve, with a second baffle 16 located within the second copper sleeve. Through setting up first copper sheathing and second copper sheathing for connect more stably between each spare part in the dismantlement part 1, also prolong the dismantlement part 1 life simultaneously. Preferably, the first copper sleeve may be integrally formed or fixedly connected with the lower plate 12, and the second copper sleeve may be integrally formed or fixedly connected with the upper plate 11.

Referring to the relevant figures of fig. 1 to 10, on the basis of the foregoing technical solution, an expandable storage part 4 may be detachably and fixedly connected to the detachable part 1, and the expandable storage part 4 is located at the front side part of the detachable part 1. Thus, the expandable storage part 4 is connected to the detachable part 1, and the expandable storage part 4 and the detachable part can be released, so that the installation and the detachment are convenient. Wherein the expandable storage section 4 is located on the front side of the detachable section 1. The expandable storage portion 4 is used for the storage electrode cap 3. Meanwhile, the accommodation of the expandable storage part 4 can be enlarged according to the field situation, so that more electrode caps 3 can be stored, and the adaptability is strong. The further preferred technical scheme is as follows: the expandable storage section 4 comprises an upper storage section, the upper storage section comprises at least one upper first clasping electrode 41, at least one upper second clasping electrode 42, a mounting plate 43 and at least one detection switch 44, the upper first holding claw electrode 41 and the upper second holding claw electrode 42 are both detachably and fixedly connected to the upper part of the mounting plate 43, the mounting plate 43 is detachably and fixedly connected with a fixing plate, the right side of the fixing plate or/and the right side of the upper second holding claw electrode 42 elastically abut against the left side of the adjacent upper first holding claw electrode 41, the electrode cap 3 is clamped between the right side of the upper first holding claw electrode 41 and the left side of the upper second holding claw electrode 42, the opening of the electrode cap 3 is upward, the rear part of the upper second holding claw electrode 42 is connected with a detection switch 44 through a bolt, and the detection switch 44 is in inductive contact with the electrode cap 3. Thus, the upper storage portion serves to store the electrode cap 3 having an upward opening. The number of the upper first holding claw electrodes 41 is one or more, the number of the upper second holding claw electrodes 42 is one or more, and the number of the detection switches 44 is one or more, wherein the number of the upper first holding claw electrodes 41 is the same as that of the upper second holding claw electrodes 42, and the number of the detection switches 44 is the same as that of the upper second holding claw electrodes 42. The detection switch 44 can detect the state of the electrode cap 3 at each position, and remind production line workers to add the electrode cap 3 in time, so that the white body welding production line is prevented from stopping, and the economic loss is reduced. The upper first holding claw electrode 41 and the upper second holding claw electrode 42 are connected to the upper portion of the mounting plate 43, and the connection between the upper first holding claw electrode 41 and the upper second holding claw electrode 42 can also be released, so that the mounting and the dismounting are convenient. The left side end and the right side end of the mounting plate 43 are connected with the fixing plate according to actual conditions, wherein the connection between the fixing plate and the mounting plate 43 can be released, and the mounting and the dismounting are convenient. When the electrode cap 3 is clamped between the right side of the upper first holding claw electrode 41 and the left side of the adjacent upper second holding claw electrode 42, the right side of the fixing plate and the left side of the adjacent upper first holding claw electrode 41 are elastically abutted, so that the electrode cap 3 is further clamped after the upper first holding claw electrode 41 is subjected to elastic force. When the electrode cap 3 is clamped between the right side of the upper first holding claw electrode 41 and the left side of the adjacent upper second holding claw electrode 42, the right side of the upper second holding claw electrode 42 and the left side of the adjacent upper first holding claw electrode 41 are elastically abutted, so that the electrode cap 3 is further clamped after the upper first holding claw electrode 41 is subjected to elastic force. The opening of the electrode cap 3 is upward, so that the electrode cap can be suitable for the posture of a robot when the electrode cap 3 is installed. The detection switch 44 is connected to the rear part of the upper second holding claw electrode 42 in a threaded manner and penetrates forwards and backwards, and the detection switch 44 can detect the state of the electrode cap 3 in real time. The storage position of the electrode cap 3 is increased by increasing the number of the upper first holding claw electrodes 41 and the upper second holding claw electrodes 42 on the extended mounting plate 43. Preferably, the upper first clasping electrode 41 and the upper second clasping electrode 42 are connected to the mounting plate 43 by pins. The detection switch 44 is provided with threads, threaded holes are formed in the upper second holding claw electrode 42 in the front and back directions, the threads on the detection switch 44 are in threaded connection with the threaded holes, and the detection switch 44 just penetrates through and is in inductive contact with the electrode cap 3. The upper ends of the upper first holding claw electrode 41 and the upper second holding claw electrode 42 are provided with a shield, and the left side and the right side of the shield are connected with the left end and the right end of the mounting plate 43 through pins. An avoiding groove is arranged at the front end of the protective cover and used for avoiding the electrode cap 3. The shield can play a role in protecting and preventing dust and welding slag from floating into a gap between the upper first holding claw electrode 41 and the upper second holding claw electrode 42 from the upper side. The more preferable technical scheme is as follows: the right side of the fixed plate or/and the right side of the upper second holding claw electrode 42 and the left side of the upper first holding claw electrode 41 are/is provided with a spring 45, the left end of the spring 45 is elastically abutted against the right side of the fixed plate or/and the right side of the upper second holding claw electrode 42, and the right end of the spring 45 is elastically abutted against the left side of the upper first holding claw electrode 41. Thus, when the electrode cap 3 is sandwiched between the right side of the upper first holding claw electrode 41 and the left side of the adjacent upper second holding claw electrode 42, the spring 45 is compressed between the right side of the fixing plate and the left side of the adjacent upper first holding claw electrode 41, so that the electrode cap 3 is further clamped after the upper first holding claw electrode 41 is subjected to elastic force. When the electrode cap 3 is clamped between the right side of the upper first holding claw electrode 41 and the left side of the adjacent upper second holding claw electrode 42, the spring 45 is compressed between the right side of the upper second holding claw electrode 42 and the left side of the adjacent upper first holding claw electrode 41, so that the electrode cap 3 is further clamped after the upper first holding claw electrode 41 bears elastic force. The method can also be as follows: go up first embracing and be provided with first arcwall face 411 on the claw electrode 41 right side, it is adjacent go up second embracing and be provided with second arcwall face 421 on the claw electrode 42 left side, go up first arcwall face 411 with go up second arcwall face 421 and set up relatively, electrode cap 3 releasable clamp is located go up first arcwall face 411 with go up between the second arcwall face 421. Thus, the upper first arc surface 411 is located on the right side surface of the upper first holding claw electrode 41 and is recessed towards the left end, and the upper second arc surface 421 is located on the left side surface of the upper second holding claw electrode 42 and is recessed towards the right end. The upper first arc-shaped surface 411 and the upper second arc-shaped surface 421 are oppositely arranged, and the radians of the upper first arc-shaped surface 411 and the upper second arc-shaped surface 421 are arranged according to the outer diameter of the electrode cap 3. The space formed by the upper first arc-shaped surface 411 and the upper second arc-shaped surface 421 is enclosed to accommodate the electrode cap 3, wherein the electrode cap 3 is clamped and stored between the upper first arc-shaped surface 411 and the upper second arc-shaped surface 421. The upper first arc-shaped face 411 and the upper second arc-shaped face 421 play a role of positioning and clamping the electrode cap 3.

Referring to the relevant figures of fig. 1 to 10, the expandable storage portion 4 of the present invention may further include a lower storage portion, on the basis of the foregoing technical solution, the lower storage portion includes at least one lower first clasping claw electrode 46, at least one lower second clasping claw electrode 47, a base mounting plate 48 and a dust-proof plate 49, the lower first clasping claw electrode 46 and the lower second clasping claw electrode 47 are both detachably and fixedly connected to the bottom of the mounting plate 43, the dust-proof plate 49 is fixedly connected to the upper portion of the front end of the base mounting plate 48 and is located at the lower portions of the lower first clasping claw electrode 46 and the lower second clasping claw electrode 47, the base mounting plate 48 is detachably and fixedly connected to the front side of the detaching portion 1, the left side of the fixing plate or/and the left side of the lower second clasping claw electrode 47 elastically abut against the right side of the adjacent lower first clasping claw electrode 46, the electrode cap 3 is clamped between the left side of the lower first holding claw electrode 46 and the right side of the lower second holding claw electrode 47, the opening of the electrode cap 3 is downward, the rear portion of the lower second holding claw electrode 47 is in threaded connection with a detection switch 44, and the detection switch 44 is in inductive contact with the electrode cap 3. Thus, the lower storage portion serves to store the electrode cap 3 having the opening downward. The number of the lower first claw-holding electrodes 46 is one or more, and the number of the upper second claw-holding electrodes 42 is one or more. The number of the upper first holding claw electrodes 41 is the same as that of the upper second holding claw electrodes 42, and the number can be set according to actual conditions in the field. The lower first holding claw electrode 46 and the lower second holding claw electrode 47 are connected to the bottom of the mounting plate 43, and the connection between the lower first holding claw electrode 46 and the lower second holding claw electrode 47 can also be released, so that the mounting and the dismounting are convenient. The dust-proof plate 49 is positioned at the bottom of the lower first holding claw electrode 46 and the lower second holding claw electrode 47, the dust-proof plate 49 is connected to the upper part of the front end of the mounting plate 43, meanwhile, the connection between the dust-proof plate 49 and the mounting plate 43 can be released, and the mounting and the dismounting are convenient. The dust-proof plate 49 is provided with an avoiding groove for avoiding the electrode cap 3, the dust-proof plate 49 can prevent the first holding claw electrode 46 and the second holding claw electrode from falling down, and simultaneously prevent dust and welding slag from floating into the gap between the first holding claw electrode 46 and the second holding claw electrode 47 from the lower part. The left side end and the right side end of the mounting plate 43 are connected with the fixing plate according to actual conditions, wherein the connection between the fixing plate and the lower part of the mounting plate 43 can be released, and the mounting and the dismounting are convenient. When the electrode cap 3 is clamped between the left side of the lower first holding claw electrode 46 and the right side of the lower second holding claw electrode 47, the left side of the fixing plate and the right side of the adjacent lower first holding claw electrode 46 are elastically abutted, so that the lower first holding claw electrode 46 is further clamped with the electrode cap 3 after being elastically abutted. When the electrode cap 3 is clamped between the left side of the lower first holding claw electrode 46 and the right side of the lower second holding claw electrode 47, the right side of the lower second holding claw electrode 47 and the left side of the adjacent first holding claw electrode are elastically abutted, so that the electrode cap 3 is further clamped after the lower first holding claw electrode 46 is subjected to elasticity. The opening of the electrode cap 3 is upward, so that the electrode cap can be suitable for the posture of a robot when the electrode cap 3 is installed. The detection switch 44 is in threaded connection with the rear portion of the lower second holding claw electrode 47 and penetrates back and forth, and the detection switch 44 can detect the state of the electrode cap 3 in real time. The storage position of the electrode cap 3 is increased by increasing the number of the lower first holding claw electrodes 46 and the lower second holding claw electrodes 47 on the extended mounting plate 43. Preferably, the lower first clasping electrode 46 and the lower second clasping electrode 47 are connected to the mounting plate 43 by pins. The detection switch 44 is provided with threads, threaded holes are formed in the lower second holding claw electrode 47 in the front and back directions, the threads on the detection switch 44 are in threaded connection with the threaded holes, and the detection switch 44 just penetrates through and is in inductive contact with the electrode cap 3. A spring 45 is compressed between the left side of the fixing plate or/and the left side of the lower second electrode and the left side of the adjacent upper first holding claw electrode 41, and the lower first holding claw electrode 46 is further clamped on the electrode cap 3 after being subjected to elastic force by the spring 45. The buffer block is connected between the front end of the left side of the base mounting plate 48 and the dust-proof plate 49, and the buffer block is connected between the front end of the right side of the base mounting plate 48 and the dust-proof plate 49. The buffer blocks at the two ends play roles in buffering and shock absorption. Meanwhile, the base mounting plate 48, the dust guard 49 and the buffer block can be detached, and the installation and the maintenance are convenient. And the base mounting plate 48, the buffer block, the dust-proof plate 49 and the fixing plate are connected on the mounting plate 43 through a pin shaft which sequentially penetrates through the base mounting plate, the buffer block, the dust-proof plate 49 and the fixing plate. The further preferred technical scheme is as follows: a lower first arc-shaped surface 461 is arranged on the left side of the lower first holding claw electrode 46, a lower second arc-shaped surface 471 is arranged on the right side of the adjacent lower second holding claw electrode 47, the lower first arc-shaped surface 461 and the lower second arc-shaped surface 471 are oppositely arranged, and the electrode cap 3 can be clamped between the lower first arc-shaped surface 461 and the lower second arc-shaped surface 471 in a removable manner. In this way, the upper first arc-shaped face 411 and the upper second arc-shaped face 421 function to position and clamp the electrode cap 3. The lower first arc surface 461 is located on the left side of the lower first clasping electrode 46 and is recessed towards the right end, and the lower second arc surface 471 is located on the right side of the lower second clasping electrode 47 and is recessed towards the left end. The radian of the lower first arc surface 461 and the lower second arc surface 471 is set according to the outer diameter of the electrode cap 3. Lower first arcwall face 461 and adjacent lower second arcwall face 471 set up relatively and its enclose the space that establishes formation and hold electrode cap 3 for electrode cap 3 presss from both sides establishes the storage under between first arcwall face 461 and the lower second arcwall face 471. The lower first arc-shaped face 461 and the lower second arc-shaped face 471 serve to position and clamp the electrode cap 3.

The above description is only for the purpose of illustrating a few embodiments of the present invention, and should not be taken as limiting the scope of the present invention, in which equivalent changes, modifications, or scaling up or down, etc. made in accordance with the spirit of the present invention should be considered as falling within the scope of the present invention.

Claims

1. The utility model provides an automatic equipment of changing of welding robot electrode cap which characterized in that: comprises a disassembly part (1) and an accessory part (2), wherein the disassembly part (1) is detachably and fixedly connected with the front side of the accessory part (2), the disassembly part (1) comprises an upper plate (11), a lower plate (12), a driving gear (13), a double-layer toothed plate (14), a first baffle plate (15), a second baffle plate (16), a resistance increasing block (17) and at least three clamping jaws (18), the driving gear (13) is rotatably connected between the upper rear side of the first baffle plate (15) and the lower rear side of the second baffle plate (16), the driving gear (13) is driven by a driving device (19) and is meshed with the outer side of the double-layer toothed plate (14), the periphery of the clamping jaws (18) is meshed with the inner side of the double-layer toothed plate (14), a rotating shaft (20) penetrates through the center of the clamping jaws (18), the first baffle plate (15) is positioned at the bottom end of the double-layer toothed plate (14) and is fixedly connected with the detachable bottom end of the rotating, second baffle (16) are located double-deck pinion rack (14) top and its with the detachable fixed connection in rotation axis (20) top, increase the detachable fixed connection in of resistance piece (17) outside the lower part front end portion of hypoplastron (12), first baffle (15) friction type press from both sides and locate increase resistance piece (17) upper portion with between the outer lower part of hypoplastron (12) front end portion, first baffle (15) rotate connect in hypoplastron (12) front end portion, second baffle (16) rotate connect in upper plate (11) front end portion, electrode cap releasable clamp set up in between jack catch (18) opposite face.

2. The welding robot electrode cap automatic replacing device as claimed in claim 1, wherein: the jaw (18) comprises a jaw body, a rotating shaft hole (181) is formed in the middle of the jaw body, the jaw body is sequentially provided with a driving tooth (182), a stopping tooth (183), an arc avoiding surface (184), a detaching tooth (185) and a stopping surface (186) in a clockwise mode, the driving tooth (182) is at least one, the stopping tooth (183) is located outside one side end of the driving tooth (182), the arc avoiding surface (184) is concave towards the rotating shaft hole (181), the arc avoiding surface (184) is located between the driving tooth (182) and the detaching tooth (185), the stopping surface (186) is located between the other end of the driving tooth (182) and the detaching tooth (185), the driving tooth (182) is meshed with the inner side of the double-layer toothed plate (14) and connected with the detaching tooth (185) and the electrode cap (3) in a releasable clamping mode, the rotating shaft (20) penetrates through the rotating shaft hole (181).

3. The welding robot electrode cap automatic replacing device as claimed in claim 2, wherein: the tooth top width of the stopping teeth (183) is larger than that of the driving teeth (182).

4. The welding robot electrode cap automatic replacing device as claimed in claim 1, wherein: dismantle part (1) and include first copper sheathing and second copper sheathing, double-deck pinion rack (14) lower extreme joint and swivelling joint in the first copper sheathing inner wall, double-deck pinion rack (14) upper end joint and swivelling joint in the second copper sheathing inner wall, first copper sheathing outer wall joint in hypoplastron (12) front end portion is interior, second copper sheathing outer wall joint in upper plate (11) front end portion is interior, first baffle (15) are located in the first copper sheathing, second baffle (16) are located in the second copper sheathing.

5. The welding robot electrode cap automatic replacing device according to any one of claims 1-4, wherein: the detachable storage part (1) is detachably and fixedly connected with an expandable storage part (4), and the expandable storage part (4) is positioned at the front side part of the detachable part (1).

6. The automatic electrode cap replacing device for the welding robot as claimed in claim 5, wherein: the expandable storage part (4) comprises an upper storage part, the upper storage part comprises at least one upper first holding claw electrode (41), at least one upper second holding claw electrode (42), a mounting plate (43) and at least one detection switch (44), the upper first holding claw electrode (41) and the upper second holding claw electrode (42) are both detachably and fixedly connected to the upper portion of the mounting plate (43), the mounting plate (43) is detachably and fixedly connected with a fixing plate, the right side of the fixing plate or/and the right side of the upper second holding claw electrode (42) elastically abut against the left side of the adjacent upper first holding claw electrode (41), an electrode cap (3) is clamped between the right side of the upper first holding claw electrode (41) and the left side of the upper second holding claw electrode (42), the opening of the electrode cap (3) faces upwards, the rear portion of the upper second holding claw electrode (42) is in bolted connection with the detection switch (44), the detection switch (44) is in inductive contact with the electrode cap (3).

7. The automatic electrode cap replacing device for the welding robot as claimed in claim 6, wherein: the right side of the fixed plate or/and the right side of the upper second embracing claw electrode (42) is adjacent to the left side of the upper first embracing claw electrode (41), a spring (45) is arranged between the right side of the fixed plate or/and the left side of the upper second embracing claw electrode (41), the left end of the spring (45) is elastically abutted against the right side of the fixed plate or/and the right side of the upper second embracing claw electrode (42), and the right end of the spring (45) is elastically abutted against the adjacent left side of the upper first embracing claw electrode (41).

8. The welding robot electrode cap automatic replacing device as claimed in claim 7, wherein: go up first embracing and be provided with first arcwall face (411) on the claw electrode (41) right side, it is adjacent go up second embracing and be provided with second arcwall face (421) on claw electrode (42) left side, go up first arcwall face (411) with go up second arcwall face (421) and set up relatively, electrode cap (3) releasable clamp is located go up first arcwall face (411) with go up between second arcwall face (421).

9. The automatic electrode cap replacing device for the welding robot as claimed in claim 5, wherein: can expand storage unit (4) and include storage unit down, storage unit includes that at least one is first down embraced claw electrode (46), at least one second down and embraces claw electrode (47), base mounting panel (48) and dust guard (49), first down embrace claw electrode (46) and the second is embraced claw electrode (47) equal detachable fixed connection in mounting panel (43) bottom down, dust guard (49) fixed connection in base mounting panel (48) front end upper portion just is located first down embrace claw electrode (46) with the second is embraced claw electrode (47) lower part down, the detachable fixed connection of base mounting panel (48) in dismantle part (2) front side, fixed plate left side or/and the second is embraced claw electrode (47) left side and adjacent down first embrace claw electrode (46) right side elasticity and offset, cap (3) press from both sides and are located first down embrace claw electrode (46) left side and the second is embraced claw electrode (46) left side down (47) Between the right side, electrode cap (3) opening is downward, threaded connection has detection switch (44) on lower second embraces claw electrode (47) rear portion, detection switch (44) with electrode cap (3) induction type contact.

10. The welding robot electrode cap automatic replacing device as claimed in claim 9, wherein: lower first embrace claw electrode (46) left side on be provided with first arcwall face (461) down, adjacent lower second embrace claw electrode (47) right side on be provided with second arcwall face (471) down, first arcwall face (461) down with second arcwall face (471) set up relatively, electrode cap (3) removable clamp locate down between first arcwall face (461) and second arcwall face (471) down.