阅读说明：本技术 一种钨极自动更换装置、系统及方法 (Automatic tungsten electrode replacing device, system and method ) 是由 刘自强 孙惠东 刘迎林 赵华松 赵奔 王珈浩 鲍芳 姜星斗 侯辉娟 王昊雷 薛龙 于 2021-08-12 设计创作，主要内容包括：本发明提供一种钨极自动更换装置、系统及方法。该装置包括：上料和卸料装置；上料装置包括钨极仓和推送单元,钨极仓用于容置替换钨极,其顶面设有出料口,推送单元设于钨极仓上,用于驱动替换钨极从出料口中伸出；卸料装置包括废料仓、夹持机构和驱动机构,废料仓与钨极仓相连,夹持机构设于废料仓的上端,废料仓上开设有与夹持机构对应的落料口,驱动机构连接于废料仓和夹持机构之间,用于驱动夹持机构张合,以使夹持机构夹持或松开废钨极,夹持机构松开废钨极时,废钨极在重力作用下经所述落料口进入废料仓中。该装置与焊枪中的夹持机构配合,能够实现焊枪中钨极的自动更换,以提高钨极氩弧焊效率及自动化程度。(The invention provides a device, a system and a method for automatically replacing a tungsten electrode. The device includes: a feeding and discharging device; the feeding device comprises a tungsten electrode bin and a pushing unit, the tungsten electrode bin is used for containing a replacement tungsten electrode, a discharge hole is formed in the top surface of the tungsten electrode bin, and the pushing unit is arranged on the tungsten electrode bin and used for driving the replacement tungsten electrode to extend out of the discharge hole; discharge apparatus includes waste bin, fixture and actuating mechanism, and waste bin links to each other with tungsten utmost point storehouse, and fixture locates the upper end of waste bin, sets up the blanking mouth that corresponds with fixture on the waste bin, and actuating mechanism connects between waste bin and fixture for drive fixture opens and shuts, so that fixture centre gripping or loosen waste tungsten utmost point, when fixture loosens waste tungsten utmost point, waste tungsten utmost point warp under the action of gravity the blanking mouth gets into in the waste bin. The device cooperates with fixture in the welder, can realize the automatic change of tungsten utmost point in the welder to improve tungsten utmost point argon arc and weld efficiency and degree of automation.)

1. An automatic tungsten electrode replacement device, comprising: a feeding device (1) and a discharging device (2);

the feeding device (1) comprises a tungsten electrode bin (11) and a pushing unit,

the tungsten electrode bin (11) is used for containing a replacement tungsten electrode (14), the top surface of the tungsten electrode bin is provided with a discharge hole,

the pushing unit is arranged on the tungsten electrode bin (11) and used for driving a replacement tungsten electrode (14) in the tungsten electrode bin (11) to extend out of the discharge hole;

the discharging device (2) comprises a waste bin (24), a first clamping mechanism (23) and a driving mechanism, the waste bin (24) is connected with the tungsten electrode bin (11),

the first clamping mechanism (23) is arranged at the upper end of the waste bin (24), a blanking port (241) corresponding to the first clamping mechanism (23) is arranged on the waste bin (24),

actuating mechanism connects between waste bin (24) and first fixture (23) for drive first fixture (23) open and shut to make first fixture (23) centre gripping or loosen useless tungsten utmost point, when first fixture (23) loosened useless tungsten utmost point, useless tungsten utmost point passes through under the action of gravity in blanking mouth (241) gets into waste bin (24).

2. The automatic tungsten electrode replacing device according to claim 1, wherein the pushing unit comprises a first pushing mechanism and a second pushing mechanism (513), the first pushing mechanism and the second pushing mechanism (513) are both arranged on a tungsten electrode bin (511), a discharging station is arranged in the tungsten electrode bin (511), the discharging station corresponds to a discharging port,

the tungsten electrode bin (511) is used for accommodating a plurality of replacement tungsten electrodes which are vertically arranged and linearly arranged, the replacement tungsten electrodes are connected with the tungsten electrode bin (511) in a sliding way,

the first pushing mechanism is used for abutting against the replacement tungsten electrode which is farthest from the discharging station and pushing the replacement tungsten electrode to slide along the linear arrangement direction of the replacement tungsten electrodes so that the replacement tungsten electrodes abut against one another in sequence and the replacement tungsten electrode which is closest to the discharging station is moved to the discharging station;

the second pushing mechanism (513) is used for driving the replacement tungsten electrode positioned at the discharging station to axially move to protrude from the discharging port (517).

3. The automatic tungsten electrode replacement device according to claim 2, wherein the first pushing mechanism comprises a first spring (12), the first spring (12) is arranged along the linear arrangement direction of the plurality of replacement tungsten electrodes (14), one end of the first spring (12) is connected with the tungsten electrode bin (11), the other end of the first spring is used for abutting against the replacement tungsten electrode (14) closest to the first spring (12), and the first spring (12) can be compressed under the action of external force, so that the plurality of replacement tungsten electrodes (14) in linear arrangement are pressed between the first spring (12) and the inner wall of the tungsten electrode bin (11);

after the replacement tungsten electrode (14) extending out of the discharge hole is removed, the compressed first spring (12) can push the rest replacement tungsten electrode (14) to slide towards the discharge station, so that the rest replacement tungsten electrode (14) is pressed between the first spring (12) and the inner wall of the tungsten electrode bin (11).

4. The automatic tungsten electrode changing device according to claim 3, wherein the first pushing mechanism further comprises a connecting member (15),

one end of the connecting piece (15) is connected with the first spring (12), and the other end of the connecting piece penetrates through the tungsten electrode bin (11) and is in threaded connection or interference fit connection with the tungsten electrode bin (11);

the external force is spirally moved or axially slides relative to the tungsten electrode bin (11) through the driving connecting piece (15) to push the first spring (12) to be compressed.

5. The automatic tungsten electrode replacing device according to claim 3, wherein the first pushing mechanism further comprises a guide tube (16), the guide tube (16) is connected with the tungsten electrode bin (11) and is coaxially arranged with the first spring (12), one end of the guide tube is sleeved outside the first spring (12) to guide the first spring (12) to move axially, a guide groove (161) matched with the tungsten electrode is formed in the outer circumferential surface of the other end of the guide tube, the guide groove (161) extends to penetrate through the guide tube (16) along the radial direction of the guide tube (16), and extends to the end surface of the guide tube (16) far away from one end of the first spring (12).

6. The automatic tungsten electrode replacement device according to any one of claims 1 to 5,

the first clamping mechanism (23) comprises two clamping arms (231) and a second spring (232), the second spring (232) is arranged between the two clamping arms (231) and is horizontally arranged, and the clamping arms (231) are slidably arranged on the waste bin (24) and can slide along the axial direction of the second spring (232) relative to the waste bin (24);

the driving mechanism comprises a sliding seat (22) and a lifting driving device (25), the sliding seat (22) is arranged above the waste bin (24), and the lifting driving device (25) is connected between the sliding seat (22) and the waste bin (24) and used for driving the sliding seat (22) to move up and down relative to the waste bin (24);

a first through groove (221) is formed in the sliding seat (22) for the lower parts of the two clamping arms (231) to extend into, two wall surfaces of the first through groove (221) along the axial direction of the second spring (232) are provided with first inclined surfaces (222), the upper ends of the first inclined surfaces (222) are inclined outwards relative to the lower ends of the first inclined surfaces towards the first through groove (221), and the upper ends of the first inclined surfaces extend upwards to the upper end surface of the sliding seat (22),

the sliding seat (22) can move upwards relatively until the first inclined surface (222) of the sliding seat abuts against the corresponding clamping arm (231), and a pushing force towards the other clamping arm (231) is applied to the clamping arm (231), so that the two clamping arms (231) move oppositely to clamp the waste tungsten electrode, and the second spring (232) is compressed;

the sliding seat (22) can move downwards until the first inclined surface (222) of the sliding seat is separated from the corresponding clamping arm (231) so as to enable the second spring (232) to reset to push the two clamping arms (231) to move back to release the waste tungsten electrode.

7. The automatic tungsten electrode replacing device according to claim 6, wherein the waste bin (24) comprises a waste bin body and a fixed seat (21), the fixed seat (21) is arranged at the upper end of the waste bin body, and the blanking port is arranged on the waste bin body;

a second through groove (211) matched with the sliding seat (22) is formed in the fixed seat (21), and the sliding seat (22) is vertically and slidably arranged in the second through groove (211);

a sliding portion (212) extending towards the clamping arm (231) is arranged on one side face, parallel to the second spring (232), of the second through groove (211), the first through groove (221) penetrates through the side face, opposite to the sliding portion (212), of the sliding seat (22), a sliding groove (2311) matched with the sliding portion (212) is formed in the side face, opposite to the sliding portion (212), of the clamping arm (231), and the sliding portion (212) is arranged in the sliding grooves (2311) of the two clamping arms (231) in a sliding mode.

8. The automatic tungsten electrode replacing device according to claim 7, wherein the fixing seat (21) comprises a fixing seat body (213) and a clamping block (214), the second through groove (211) is formed in the fixing seat body (213), a clamping groove matched with the clamping block (214) is formed in an end surface, facing the sliding groove (2311), of the fixing seat body (213), and the clamping block (214) is clamped in the clamping groove;

one end of the clamping block (214) opposite to the sliding groove (2311) is provided with an extending part extending towards the sliding groove (2311), and the end part of the extending part penetrates through the groove wall of the second through groove (211) and then extends into the sliding groove (2311) to form the sliding part (212).

9. A tungsten electrode replacement system comprising a base (3), a moving mechanism (4), a welding torch (5), and the automatic tungsten electrode replacement apparatus according to any one of claims 1 to 8,

the automatic tungsten electrode replacing device is arranged on the base (3), a second clamping mechanism is arranged in the welding gun (5) and used for clamping or loosening the tungsten electrode,

the moving mechanism (4) is connected between the base (3) and the welding gun (5) and is used for driving the welding gun (5) to move to a position above a discharge port of the automatic tungsten electrode replacing device, so that a second clamping mechanism in the welding gun (5) clamps a replacing tungsten electrode (14) extending out of the discharge port; or the welding gun (5) is driven to move to the position where the waste tungsten electrode (6) clamped by the second clamping mechanism extends into the first clamping mechanism (23) of the automatic tungsten electrode replacing device, so that the waste tungsten electrode (6) is clamped by the first clamping mechanism (23).

10. A method of tungsten electrode replacement using the tungsten electrode replacement system of claim 9, comprising the steps of:

unloading step S1:

s1.1: the moving mechanism (4) drives the welding gun (5) to move until the waste tungsten electrode (6) clamped by the second clamping mechanism in the welding gun (5) extends into the first clamping mechanism (23) of the discharging device (2),

s1.2: the first clamping mechanism (23) clamps the waste tungsten electrode (6), and the second clamping mechanism loosens the waste tungsten electrode (6),

s1.3: the first clamping mechanism (23) loosens the waste tungsten electrode (6) so that the waste tungsten electrode (6) enters the waste bin (24) through a blanking port of the discharging device (2) under the action of gravity;

a feeding step S2:

s2.1: a pushing unit of the feeding device (1) drives a replacement tungsten electrode (14) in a tungsten electrode bin (11) to extend out of the discharge hole;

s2.3: the moving mechanism (4) drives the welding gun (5) to move to the position above the discharge hole, and a second clamping mechanism in the welding gun (5) clamps the replacement tungsten electrode (14) extending out of the discharge hole.

Technical Field

The invention relates to the technical field of welding equipment, in particular to an automatic tungsten electrode replacing device, system and method.

Background

Argon tungsten arc welding is an arc welding method for generating heat between a non-consumable electrode and a workpiece, and melts metal by using an electric arc between the tungsten electrode and the workpiece to form a welding seam. During welding, the tungsten electrode is not melted and only acts as an electrode, and the nozzle of the electric welding torch feeds argon gas to play a role in protecting the electrode and a molten pool.

Although the tungsten electrode can not be melted in the welding process, after long-time welding, the head of the tungsten electrode is worn and consumed due to various external factors, the tungsten electrode is difficult to strike arcs after being worn, the allowable current, the arc striking performance and the arc stabilizing performance of the tungsten electrode are influenced, and the welding quality is influenced, so that the tungsten electrode needs to be replaced. In the prior art, the tungsten electrode is generally replaced manually, the tungsten electrode in the welding gun is taken out manually, and then another tungsten electrode is placed on the welding gun for clamping.

However, for the elevation angle welding seam, impurities floating on the surface of the molten pool are influenced by the action of gravity and electric arc force in the welding process, and easily fall to be adhered to a tungsten electrode, so that the tungsten electrode is burnt, the welding quality is influenced after the tungsten electrode is burnt, the welding process is possibly interrupted, and the tungsten electrode needs to be frequently replaced under the working condition. If the manual replacement is adopted, not only can the welding efficiency be reduced, but also the working strength of operators can be increased, and particularly under the nuclear radiation environment, the irradiation quantity of the operators can be increased.

Disclosure of Invention

The invention aims to solve the technical problem of providing an automatic tungsten electrode replacing device for improving welding efficiency and automation degree aiming at the defects in the prior art, and also correspondingly providing an automatic tungsten electrode replacing system with the device and a method for replacing a tungsten electrode by using the system.

The technical scheme adopted for solving the technical problem of the invention is as follows:

the invention provides an automatic tungsten electrode replacing device, which comprises: a feeding device and a discharging device;

the feeding device comprises a tungsten electrode bin and a pushing unit,

the tungsten electrode bin is used for containing a replacement tungsten electrode, the top surface of the tungsten electrode bin is provided with a discharge hole,

the pushing unit is arranged on the tungsten electrode bin and is used for driving a replacement tungsten electrode in the tungsten electrode bin to extend out of the discharge hole;

the discharging device comprises a waste bin, a first clamping mechanism and a driving mechanism, the waste bin is connected with a tungsten electrode bin,

the first clamping mechanism is arranged at the upper end of the waste bin, a blanking port corresponding to the first clamping mechanism is arranged on the waste bin,

actuating mechanism connects between waste bin and first fixture for drive first fixture opens and shuts, so that first fixture centre gripping or unclamp the useless tungsten utmost point, when first fixture unclamped the useless tungsten utmost point, useless tungsten utmost point warp under the action of gravity the blanking mouth gets into in the waste bin.

Optionally, the pushing unit comprises a first pushing mechanism and a second pushing mechanism, the first pushing mechanism and the second pushing mechanism are both arranged on the tungsten electrode bin, a discharging station is arranged in the tungsten electrode bin, the discharging station corresponds to the discharging port,

the tungsten electrode bin is used for accommodating a plurality of replacement tungsten electrodes which are vertically arranged and linearly arranged, the replacement tungsten electrodes are connected with the tungsten electrode bin in a sliding way,

the first pushing mechanism is used for abutting against the replacement tungsten electrode which is farthest from the discharging station and pushing the replacement tungsten electrode to slide along the linear arrangement direction of the replacement tungsten electrodes so that the replacement tungsten electrodes abut against one another in sequence and the replacement tungsten electrode which is closest to the discharging station is moved to the discharging station;

and the second pushing mechanism is used for driving the replacement tungsten electrode positioned at the discharging station to axially move to extend out of the discharging port.

Optionally, the first pushing mechanism comprises a first spring, the first spring is arranged along the linear arrangement direction of the plurality of replacement tungsten electrodes, one end of the first spring is connected with the tungsten electrode bin, the other end of the first spring is used for abutting against the replacement tungsten electrode closest to the first spring, and the first spring can be compressed under the action of external force, so that the plurality of replacement tungsten electrodes in the linear arrangement are pressed between the first spring and the inner wall of the tungsten electrode bin;

after the replacement tungsten electrode extending out of the discharge port is taken away, the compressed first spring can push the rest replacement tungsten electrode to slide towards the discharge station, so that the rest replacement tungsten electrode is pressed between the first spring and the inner wall of the tungsten electrode bin.

Optionally, the first pushing mechanism further comprises a connecting piece,

one end of the connecting piece is connected with the first spring, and the other end of the connecting piece penetrates through the tungsten electrode bin and is in threaded connection or interference fit connection with the tungsten electrode bin;

the external force drives the connecting piece to spirally move or axially slide relative to the tungsten electrode bin so as to push the first spring to be compressed.

Optionally, the first pushing mechanism further includes a guide tube, the guide tube is connected to the tungsten electrode bin and coaxially disposed with the first spring, one end of the guide tube is sleeved outside the first spring to guide the first spring to move axially, a guide groove matched with the tungsten electrode is formed in the outer circumferential surface of the other end of the guide tube, and the guide groove extends to penetrate through the guide tube along the radial direction of the guide tube and extends to the end surface of the guide tube far away from one end of the first spring along the axial direction of the guide tube.

Optionally, the second pushing mechanism is a telescopic cylinder, the telescopic cylinder is arranged along the axial direction of the tungsten electrode, the telescopic cylinder comprises a cylinder barrel and a piston rod, the cylinder barrel is fixed to the outer wall of the tungsten electrode bin, one end, provided with a piston, of the piston rod is arranged in the cylinder barrel in a sealing and sliding mode, the other end of the piston rod extends into the tungsten electrode bin, and the piston rod is used for being abutted to the tungsten electrode on the discharging station.

Optionally, the other end of the piston rod is provided with a push plate,

offer the first groove that supplies the piston rod to reciprocate on the tungsten utmost point storehouse, offer the second groove of intercommunication first groove and tungsten utmost point storehouse inner chamber on the tungsten utmost point storehouse inner wall to supply the push pedal to reciprocate, the push pedal stretches into the tungsten utmost point storehouse towards the one end of tungsten utmost point through the second groove in, and is used for with the replacement tungsten utmost point butt on the ejection of compact station.

Optionally, a guide seat is arranged at a position of the tungsten electrode bin corresponding to the discharge port, and a guide through hole communicated with the discharge port and matched with the replacement tungsten electrode is formed in the guide seat.

Optionally, the tungsten electrode bin is formed by inserting a first shell and a second shell, wherein the openings of the first shell and the second shell are oppositely arranged, and a connecting structure is arranged between the first shell and the second shell and used for connecting the first shell and the second shell to form a whole.

Optionally, the first clamping mechanism includes two clamping arms and a second spring, the second spring is disposed between the two clamping arms and is horizontally disposed, and the clamping arms are slidably disposed on the waste bin and can slide along an axial direction of the second spring relative to the waste bin;

the driving mechanism comprises a sliding seat and a lifting driving device, the sliding seat is arranged above the waste bin, and the lifting driving device is connected between the sliding seat and the waste bin and used for driving the sliding seat to move up and down relative to the waste bin;

a first through groove is formed in the sliding seat for the lower parts of the two clamping arms to extend into, two wall surfaces of the first through groove along the axial direction of the second spring are provided with first inclined surfaces, the upper end of each first inclined surface inclines outwards the first through groove relative to the lower end of the first inclined surface, and the upper end of each first inclined surface extends upwards to the upper end surface of the sliding seat,

the sliding seat can move upwards relatively until the first inclined surface of the sliding seat is abutted against the corresponding clamping arm, and thrust towards the other clamping arm is applied to the clamping arm, so that the two clamping arms move oppositely to clamp the waste tungsten electrode, and the second spring is compressed;

the sliding seat can move downwards to the first inclined surface of the sliding seat to be separated from and abutted against the corresponding clamping arm, so that the second spring is reset to push the two clamping arms to move back to the opposite direction to loosen the waste tungsten electrode.

Optionally, the waste bin comprises a waste bin body and a fixed seat, the fixed seat is arranged at the upper end of the waste bin body, and the blanking port is formed in the waste bin body;

a second through groove matched with the sliding seat is formed in the fixed seat, and the sliding seat is vertically and slidably arranged in the second through groove;

the second leads to and is equipped with the sliding part that extends towards the arm lock on the parallel side of second spring, first lead to the groove run through the sliding seat with the side that the sliding part is relative, set up on the arm lock and the side that the sliding part is relative with the sliding part with sliding part complex spout, the sliding part slides and locates in the spout of two arm locks.

Optionally, the fixing seat includes a fixing seat body and a clamping block, the second through groove is formed in the fixing seat body, a clamping groove matched with the clamping block is formed in an end surface of the fixing seat body facing the sliding groove, and the clamping block is clamped in the clamping groove;

one end of the clamping block, which is opposite to the sliding groove, is provided with an extending part extending towards the sliding groove, and the end part of the extending part penetrates through the groove wall of the second through groove and then extends into the sliding groove to form the sliding part.

Optionally, the fixing seat body and the fixture block are connected through a fastener thread.

Optionally, the side surface of the clamping arm opposite to the corresponding first inclined surface is provided with a second inclined surface which is matched with the first inclined surface in an attaching mode.

The invention also provides a tungsten electrode replacing system, which comprises a base, a moving mechanism, a welding gun and the automatic tungsten electrode replacing device,

the automatic tungsten electrode replacing device is arranged on the base, a second clamping mechanism is arranged in the welding gun and used for clamping or loosening the tungsten electrode,

the moving mechanism is connected between the base and the welding gun and used for driving the welding gun to move to a position above a discharge port of the automatic tungsten electrode replacing device, so that a second clamping mechanism in the welding gun clamps the tungsten electrode extending out of the discharge port; or driving the welding gun to move until the waste tungsten electrode clamped by the second clamping mechanism extends into the first clamping mechanism of the automatic tungsten electrode replacing device, so that the first clamping mechanism clamps the waste tungsten electrode.

Optionally, the moving mechanism comprises a slewing mechanism, a two-dimensional linear driving mechanism and a rotary driving mechanism,

the rotary mechanism is rotationally connected to the base and is used for driving the welding gun to horizontally rotate relative to the base,

the two-dimensional linear driving mechanism is connected between the swing mechanism and the rotary driving mechanism and is used for driving the welding gun to horizontally and linearly reciprocate relative to the swing mechanism and driving the welding gun to vertically reciprocate relative to the swing mechanism;

the rotary driving mechanism is connected between the two-dimensional linear driving mechanism and the welding gun and used for driving the welding gun to rotate in a certain vertical plane relative to the two-dimensional linear driving mechanism.

The invention also provides a method for replacing a tungsten electrode by using the tungsten electrode replacing system, which comprises the following steps:

unloading step S1:

s1.1: the moving mechanism drives the welding gun to move to a position where the waste tungsten electrode clamped by the second clamping mechanism in the welding gun extends into the first clamping mechanism of the discharging device,

s1.2: the first clamping mechanism clamps the waste tungsten electrode, and the second clamping mechanism loosens the waste tungsten electrode,

s1.3: the first clamping mechanism loosens the waste tungsten electrode, so that the waste tungsten electrode enters the waste bin through a blanking port of the discharging device under the action of gravity;

a feeding step S2:

s2.1: the pushing unit of the feeding device drives the replacement tungsten electrode in the tungsten electrode bin to extend out of the discharge hole;

s2.3: the moving mechanism drives the welding gun to move to the position above the discharge port, and a second clamping mechanism in the welding gun clamps the replacement tungsten electrode extending out of the discharge port.

According to the invention, the first clamping mechanism is driven to open and close by the driving mechanism of the discharging device and is matched with the clamping mechanism in the welding gun, so that the waste tungsten electrode in the welding gun can be discharged; and then the replacement tungsten electrode in the tungsten electrode bin is pushed out from the discharge hole by the pushing unit of the feeding device, so that the clamping mechanism in the welding gun clamps the replacement tungsten electrode, the automatic replacement of the tungsten electrode in the welding gun is realized, and the argon tungsten-arc welding efficiency and the automation degree are improved.

Drawings

Fig. 1 is a schematic perspective view of an automatic tungsten electrode replacement device according to embodiment 1 of the present invention;

fig. 2 is a partial perspective cross-sectional view of an automatic tungsten electrode replacement device according to embodiment 1 of the present invention;

FIG. 3 is a schematic perspective view of the feeding device;

FIG. 4 is a schematic cross-sectional view of the loading device in an applied state;

FIG. 5 is a schematic view of a partial cross-sectional structure of the feeding device;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a schematic perspective view of a discharge device;

FIG. 8 is a schematic view of a partial perspective cross-sectional structure of a discharge device;

FIG. 9 is a schematic perspective view of the assembled fixing base, sliding base and first clamping mechanism;

FIG. 10 is a schematic view of a partially assembled three-dimensional cross-sectional structure of the fixed seat, the sliding seat and the first clamping mechanism;

FIG. 11 is a perspective view of the assembled slide mount and first clamping mechanism;

FIG. 12 is a schematic perspective view of the assembled sliding seat, first clamping mechanism and clamping block;

fig. 13 is a schematic front view of the first clamping mechanism after being spread.

FIG. 14 is a perspective view of the sliding seat;

FIG. 15 is a perspective view of the clamping arm;

FIG. 16 is a schematic perspective view of an automatic tungsten electrode replacement system according to embodiment 2 of the present invention;

fig. 17 is a schematic perspective view (in a discharging state) of the automatic tungsten electrode replacement system according to embodiment 2 of the present invention from another view angle.

In the figure:

1. a feeding device; 11. a tungsten electrode bin; 111. an inner cavity; 112. a through hole; 113. a first groove; 114. a first housing; 1141. a second connecting portion; 115. a second housing;

1151. a first connection portion; 1152. a guide groove; 12. a first spring; 13. a drive mechanism;

131. a cylinder barrel; 132. a piston rod; 133. pushing the plate; 14. replacing the tungsten electrode; 15. a connecting member; 16. a guide tube; 161. a card slot; 17. a guide seat; 18. a connecting bolt; 2. a discharge device; 21. a fixed seat; 211. a second through groove; 212. a sliding part; 213. a fixed seat body; 214. a clamping block; 215. a fastener; 22. a sliding seat; 221. a first through groove; 222. a first inclined surface; 23. a first clamping mechanism; 231. clamping arms; 232. a second spring; 2311. a chute; 2312. a second inclined surface; 2313. a butting block; 2314. a clamping jaw; 2315. a containing groove; 24. a waste bin; 25. a lift drive; 241. a blanking hole; 242. mounting a plate; 251. a second cylinder; 252. a second piston rod; 26. a guide cylinder; 3. a base; 4. a moving mechanism; 41. a swing mechanism; 42. a two-dimensional linear drive mechanism; 43. a rotation driving mechanism; 5. a welding gun; 6. a waste tungsten electrode.

Detailed Description

The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.

In the description of the present invention, it should be noted that the indication of orientation or positional relationship, such as "on" or the like, is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the device or element referred to must be provided with a specific orientation, constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, e.g., as being fixedly or removably connected, or integrally connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.

The invention provides an automatic tungsten electrode replacing device, which comprises: a feeding device and a discharging device;

the feeding device comprises a tungsten electrode bin and a pushing unit,

the tungsten electrode bin is used for containing a replacement tungsten electrode, the top surface of the tungsten electrode bin is provided with a discharge hole,

the pushing unit is arranged on the tungsten electrode bin and is used for driving a replacement tungsten electrode in the tungsten electrode bin to extend out of the discharge hole;

the discharging device comprises a waste bin, a first clamping mechanism and a driving mechanism, the waste bin is connected with a tungsten electrode bin,

the first clamping mechanism is arranged at the upper end of the waste bin, a blanking port corresponding to the first clamping mechanism is arranged on the waste bin,

actuating mechanism connects between waste bin and first fixture for drive first fixture opens and shuts, so that first fixture centre gripping or unclamp the useless tungsten utmost point, when first fixture unclamped the useless tungsten utmost point, useless tungsten utmost point warp under the action of gravity the blanking mouth gets into in the waste bin.

The invention also provides a tungsten electrode replacing system, which comprises a base, a moving mechanism, a welding gun and the automatic tungsten electrode replacing device,

the automatic tungsten electrode replacing device is arranged on the base, a second clamping mechanism is arranged in the welding gun and used for clamping or loosening the tungsten electrode,

the moving mechanism is connected between the base and the welding gun and used for driving the welding gun to move to a position above a discharge port of the automatic tungsten electrode replacing device, so that a second clamping mechanism in the welding gun clamps the tungsten electrode extending out of the discharge port; or driving the welding gun to move until the waste tungsten electrode clamped by the second clamping mechanism extends into the first clamping mechanism of the automatic tungsten electrode replacing device, so that the first clamping mechanism clamps the waste tungsten electrode.

The invention also provides a method for replacing a tungsten electrode by using the tungsten electrode replacing system, which comprises the following steps:

unloading step S1:

s1.1: the moving mechanism drives the welding gun to move to a position where the waste tungsten electrode clamped by the second clamping mechanism in the welding gun extends into the first clamping mechanism of the discharging device,

s1.2: the first clamping mechanism clamps the waste tungsten electrode, and the second clamping mechanism loosens the waste tungsten electrode,

s1.3: the first clamping mechanism loosens the waste tungsten electrode, so that the waste tungsten electrode enters the waste bin through a blanking port of the discharging device under the action of gravity;

a feeding step S2:

s2.1: the pushing unit of the feeding device drives the replacement tungsten electrode in the tungsten electrode bin to extend out of the discharge hole;

s2.3: the moving mechanism drives the welding gun to move to the position above the discharge port, and a second clamping mechanism in the welding gun clamps the replacement tungsten electrode extending out of the discharge port.

Example 1:

as shown in fig. 1 and 2, the present embodiment provides an automatic tungsten electrode replacement device, which includes: a loading device 1 and a discharging device 2.

As shown in fig. 3-5, the feeding device 1 comprises a tungsten electrode bin 11 and a pushing unit,

the tungsten electrode bin 11 is used for accommodating a replacement tungsten electrode 14, the top surface of the tungsten electrode bin is provided with a discharge hole,

the pushing unit is arranged on the tungsten electrode bin 11 and is used for driving a replacement tungsten electrode 14 in the tungsten electrode bin 11 to extend out of the discharge hole;

as shown in fig. 7 and 8, the discharging device 2 includes a waste bin 24, a first clamping mechanism 23 and a driving mechanism, the waste bin 24 is connected with the tungsten electrode bin 11,

the first clamping mechanism 23 is arranged at the upper end of the waste bin 24, a blanking port 241 corresponding to the first clamping mechanism 23 is arranged on the waste bin 24,

the driving mechanism is connected between the waste bin 24 and the first clamping mechanism 23 and used for driving the first clamping mechanism 23 to open and close so that the first clamping mechanism 23 clamps or loosens the waste tungsten electrode, and when the first clamping mechanism 23 loosens the waste tungsten electrode, the waste tungsten electrode enters the waste bin 24 through the blanking port 241 under the action of gravity.

Therefore, the first clamping mechanism 23 is driven to open and close by the driving mechanism of the discharging device 2 and is matched with the clamping mechanism in the welding gun, so that the waste tungsten electrode 6 in the welding gun can be discharged; and then the replacement tungsten electrode 14 in the tungsten electrode bin 11 is pushed out from the discharge hole by the pushing unit of the feeding device 1, so that the clamping mechanism in the welding gun clamps the replacement tungsten electrode 14, the automatic replacement of the tungsten electrode in the welding gun is realized, and the argon tungsten-arc welding efficiency and the automation degree are improved.

In this embodiment, the pushing unit includes a first pushing mechanism and a second pushing mechanism 513, the first pushing mechanism and the second pushing mechanism 513 are both disposed on the tungsten electrode bin 511, a discharging station is disposed in the tungsten electrode bin 511, the discharging station corresponds to the discharging port,

the tungsten electrode bin 511 is used for accommodating a plurality of replacement tungsten electrodes which are vertically arranged and linearly arranged, the replacement tungsten electrodes are connected with the tungsten electrode bin 511 in a sliding way,

the first pushing mechanism is used for abutting against the replacement tungsten electrode farthest from the discharging station and pushing the replacement tungsten electrode to slide along the linear arrangement direction of the replacement tungsten electrodes so that the replacement tungsten electrodes abut against one another in sequence and the replacement tungsten electrode closest to the discharging station is moved to the discharging station;

the second pushing mechanism 513 is used to drive the replacement tungsten electrode located at the discharging station to move axially to protrude from the discharging hole 517.

After the replacement tungsten electrode 14 at the discharge port of the feeding device 1 is clamped away, the first pushing mechanism pushes the rest replacement tungsten electrodes 14 to move, and the replacement tungsten electrode 14 closest to the discharge station moves to the discharge station. By analogy, continuous automatic feeding of the tungsten electrode can be realized.

As shown in fig. 4 and 6, the inner cavity 111 of the tungsten electrode bin 11 has a three-dimensional structure, the width of the three-dimensional structure is matched with the diameter of the tungsten electrode, the length of the three-dimensional structure extends along the linear arrangement direction of the tungsten electrode, and the height of the three-dimensional structure is slightly higher than the length of the tungsten electrode, so that the tungsten electrode 14 is replaced to abut against two opposite wall surfaces of the inner cavity 111 of the tungsten electrode bin 11 and is linearly arranged along the length direction of the inner cavity 111 of the tungsten electrode bin 11, and the two-dimensional structure can slide relative to the inner cavity wall of the tungsten electrode bin 11 along the linear arrangement direction of the tungsten electrode under the pushing of the first pushing mechanism.

In this embodiment, the first pushing mechanism includes a first spring 12, the first spring 12 is arranged along the linear arrangement direction of the plurality of replacement tungsten electrodes 14, one end of the first spring 12 is connected to the tungsten electrode bin 11, and the other end of the first spring is used for abutting against the replacement tungsten electrode 14 closest to the first spring 12, the first spring 12 can be compressed under the action of external force, so that the plurality of replacement tungsten electrodes 14 in the linear arrangement are pressed between the first spring 12 and the inner wall of the tungsten electrode bin 11;

after the replacement tungsten electrode 14 extending from the discharge hole is removed, the compressed first spring 12 can push the remaining replacement tungsten electrode 14 to slide towards the discharge station, so that the remaining replacement tungsten electrode 14 is pressed between the first spring 12 and the inner wall of the tungsten electrode bin 11.

Thereby, the compressed first spring 12 is formed in the tungsten electrode magazine 11 by an external force to press the plurality of replacement tungsten electrodes 14 arranged linearly between the first spring 12 and the side end face of the inner cavity 111 of the tungsten electrode magazine. So that the replacement tungsten electrode 14 positioned on the discharge station is simultaneously abutted against the side end face of the inner cavity 111 of the tungsten electrode bin.

The following can be used to achieve that "the first spring 12 can be compressed under an external force to press the linear array of multiple replacement tungsten electrodes 14 between the first spring 12 and the inner wall of the tungsten electrode cartridge 11":

the replacement tungsten electrode 14 is fed into the tungsten electrode bin 11 through the discharge hole, the device is rotated by 90 degrees so that the replacement tungsten electrode 14 moves towards one end far away from the discharge hole under the action of gravity, and the like until the plurality of replacement tungsten electrodes 14 which are linearly arranged abut against the side end faces of the first spring 12 and the inner cavity 111 of the tungsten electrode bin, at the moment, the replacement tungsten electrode 14 can be continuously fed into the tungsten electrode bin 11 through the discharge hole in an extrusion mode, the first spring 12 is compressed in the process, and the plurality of replacement tungsten electrodes 14 are pressed between the first spring 12 and the side end face of the inner cavity 111 of the tungsten electrode bin by the compressed first spring 12.

In this embodiment, the first pushing mechanism further includes a connecting member 15, and the connecting member 15 is a bolt.

A through hole 112 is formed in the tungsten electrode bin 11, the through hole 112 is arranged along the axial direction of the first spring 12, one end of the connecting piece 15 is connected with the first spring 12, and the other end of the connecting piece penetrates through the through hole 112 and is in threaded connection with the tungsten electrode bin 11;

the external force is spirally moved relative to the tungsten electrode bin 11 through the driving connecting piece 15 to push the first spring 12 to be compressed.

In other embodiments, the connecting member 15 may be a rod member that is in interference fit with the axial hole of the through hole 112, and the external force is applied by driving the rod member to slide axially relative to the tungsten electrode cartridge 11 to push the first spring 12 to be compressed.

Thus, in the present embodiment, the manner in which the "first spring 12 can be compressed by an external force so that the plurality of replacement tungsten electrodes 14 arranged in a linear manner are pressed between the first spring 12 and the inner wall of the tungsten electrode magazine 11" is as follows:

the connecting piece 15 is screwed out, the first spring 12 is taken out, the replacement tungsten electrode 14 is sent into the tungsten electrode bin 11 through the discharge hole, the device is rotated by 90 degrees, so that the replacement tungsten electrode 14 moves towards one end far away from the discharge hole under the action of gravity, and the like is carried out until all the replacement tungsten electrodes 14 enter the tungsten electrode bin 11 and are linearly arranged along the axial direction of the first spring 12. And then the first spring 12 extends into the tungsten electrode bin 11 through the through hole 112 to abut against the replacement tungsten electrode 14 closest to the first spring, the connecting piece 15 is screwed into the through hole 112, in the process that the connecting piece 15 is screwed forward, the replacement tungsten electrode 14 is pushed by the first spring 12 to move to the plurality of replacement tungsten electrodes 14 to form a continuous body which is abutted against the replacement tungsten electrodes 14 in sequence, the replacement tungsten electrode 14 farthest away from the first spring 12 abuts against the side end face of the inner cavity 111 of the tungsten electrode bin, the first spring 12 is compressed in the process, and the compressed first spring 12 presses the plurality of replacement tungsten electrodes 14 between the first spring 12 and the side end face of the inner cavity 111 of the tungsten electrode bin.

In this embodiment, the first pushing mechanism further includes a guide tube 16, the guide tube 16 is connected to the tungsten electrode bin 11 and coaxially disposed with the first spring 12, and one end of the guide tube is sleeved outside the first spring 12 to guide the first spring 12 to move axially, so as to avoid a slipping phenomenon occurring in a compression process of the first spring 12; the outer circumference of the other end is provided with a guide groove 161 matching with the tungsten electrode, the guide groove 161 extends to penetrate the guide tube 16 along the radial direction of the guide tube 16, and extends to penetrate the end face of the guide tube 16 far away from one end of the first spring 12 along the axial direction of the guide tube 16. A plurality of replacement tungsten electrodes 14 arranged linearly are fitted in the tungsten electrode magazine 11 in such a manner as to be caught in the catching grooves 61 to guide the movement of the replacement tungsten electrodes 14 themselves in the axial direction as well as in the axial direction of the spring.

Because the pushing force required for pushing the plurality of replacement tungsten electrodes 14 to move is larger, the first spring 12 is correspondingly thicker, so that the diameter of the guide tube 16 is larger than the width of the inner cavity 111 of the tungsten electrode bin 11, as shown in fig. 6, in the embodiment, through grooves matched with the guide tube 16 are formed on two side wall surfaces of the inner cavity 111 of the tungsten electrode bin 11 so as to accommodate the guide tube 16.

In this embodiment, the second pushing mechanism 13 is a telescopic cylinder, the telescopic cylinder is arranged along the axial direction of the replacement tungsten electrode 14, and includes a first cylinder 131 and a first piston rod 132, the first cylinder 131 is fixed to the outer wall of the tungsten electrode bin 11, one end of the first piston rod 132 having a piston is hermetically and slidably disposed in the first cylinder 131, and the other end of the first piston rod extends into the tungsten electrode bin 11 and is used for abutting against the replacement tungsten electrode 14 on the discharging station.

Specifically, the other end of the first piston rod 132 has a push plate 133.

The bottom surface of the tungsten electrode bin 11 is provided with a first groove 113 for the first piston rod 132 to move up and down, the inner wall of the tungsten electrode bin 11 is provided with a second groove for communicating the first groove 113 with the inner cavity of the tungsten electrode bin 11, so that the push plate 133 can move up and down, one end of the push plate 133 facing the replacement tungsten electrode 14 extends into the tungsten electrode bin 11 through the second groove, and is used for abutting against the replacement tungsten electrode 14 on the discharging station.

In this embodiment, in order to avoid the deviation phenomenon of the replacement tungsten electrode 14 extending out of the discharge port, a guide seat 17 is disposed at a position of the tungsten electrode bin 11 corresponding to the discharge port, and a guide hole communicated with the discharge port and matched with the replacement tungsten electrode 14 is formed in the guide seat 17 and used for guiding the tungsten electrode to move vertically.

In this embodiment, the tungsten electrode bin 11 is formed by inserting a first shell 114 and a second shell 115, which have opposite openings, into each other, and inner cavity walls of the first shell 114 and the second shell 115 enclose an inner cavity 111 of the tungsten electrode bin 11. Specifically, referring to fig. 2, the second housing 115 is inserted into the first housing 114, and the inner cavity 111 of the tungsten electrode cartridge 11 is mainly formed by the inner cavity of the second housing 115.

In this embodiment, a connection structure is provided between the first housing 114 and the second housing 115, and is used for connecting the first housing 114 and the second housing 115 into a whole.

Specifically, the connection structure includes a first connection portion 1151, a second connection portion 1141, and a connection bolt 18.

The first connection portion 1151 is formed at an end of the second housing 115 corresponding to the second pushing mechanism 13, and extends toward the first housing 114. The first connection portion 1151 has a gap with the outer wall of the second housing 115 for the first housing 114 to slide. A second connection portion 1141 is formed on an end surface of the first housing 114 opposite to the first connection portion 1151, and extends toward the first connection portion 1151. The end surface of the first connecting portion 1151 facing the first housing 114 is provided with a guide groove 1152 penetrating through an end surface of the first connecting portion 1151 along the axial direction of the first spring 12 for sliding the second connecting portion 1141, and the connecting bolt 18 penetrates through the first connecting portion 1151 and the second connecting portion 1141 to fix the first housing 114 and the second housing 115.

The first connection portion 1151 is provided with a mounting hole at a position corresponding to the second pushing mechanism 13, and an open end of the first cylinder 131 of the second pushing mechanism 13 extends into the mounting hole and is in threaded connection with the first connection portion 1151. The mounting hole extends toward the second housing 115 to communicate with the first groove 113 to form a passage for the first piston rod 132 to axially reciprocate.

As shown in fig. 8 to 14, in the present embodiment:

the first clamping mechanism 23 of the discharging device 2 comprises two clamping arms 231 and a second spring 232, referring to fig. 13, the second spring 232 is arranged between the two clamping arms 231 and horizontally arranged, the clamping arm 231 is slidably arranged on the waste bin 24 and can slide along the axial direction of the second spring 232 relative to the waste bin 24;

referring to fig. 14, the driving mechanism of the discharging device 2 includes a sliding seat 22 and a lifting driving device 25, the sliding seat 22 is disposed above the waste bin 24, and the lifting driving device 25 is connected between the sliding seat 22 and the waste bin 24 and is used for driving the sliding seat 22 to move up and down relative to the waste bin 24;

a first through groove 221 is formed in the sliding seat 22 for the lower portions of the two clamping arms 231 to extend into, two wall surfaces of the first through groove 221 along the axial direction of the second spring 232 are provided with first inclined surfaces 222, the upper end of each first inclined surface 222 inclines outward from the corresponding first through groove 221 relative to the lower end thereof, and the upper end thereof extends upward to the upper end surface of the sliding seat 22,

the sliding seat 22 can move up relatively until the first inclined surface 222 of the sliding seat abuts against the corresponding clamping arm 231, and applies a pushing force to the other clamping arm 231, so that the two clamping arms 231 move toward each other to clamp the waste tungsten electrode, and the second spring 232 is compressed;

the sliding seat 22 can move down until the first inclined surface 222 thereof is disengaged from the corresponding clamping arm 231, so that the second spring 232 is reset to push the two clamping arms 231 to move back to release the waste tungsten electrode.

From this, through reciprocating of sliding seat 22 to and the cooperation between the first inclined plane 222 of first logical groove 221, arm lock 231 and the second spring 232, can realize that two arm locks 231 open and close at the level in first logical groove 221, the useless tungsten pole by the centre gripping can directly pass through first logical groove 221 and vertically fall after arm lock 231 opens, thereby realized the vertical blanking of normal position after the useless tungsten pole clamp is got, operating space has been practiced thrift, and the degree of automation that the tungsten pole was changed has been improved.

In this embodiment, waste bin 24 includes waste bin body and fixing base 21, and the upper end of waste bin body is located to fixing base 21, and the top surface of waste bin body is seted up to blanking mouth 241.

A second through groove 211 matched with the sliding seat 22 is formed in the fixed seat 21, and the sliding seat 22 is vertically and slidably arranged in the second through groove 211; therefore, the device has compact integral structure and small occupied space.

As shown in fig. 10 and 11, a sliding portion 212 extending toward the clamping arm 231 is disposed on a side surface of the second through groove 211 parallel to the second spring 232, the first through groove 221 penetrates through a side surface of the sliding seat 22 opposite to the sliding portion 212, a sliding groove 2311 matched with the sliding portion 212 is disposed on a side surface of the clamping arm 231 opposite to the sliding portion 212, and the sliding portion 212 is slidably disposed in the sliding grooves 2311 of the two clamping arms 231.

In this embodiment, referring to fig. 10 and 12, the fixing base 21 includes a fixing base body 213 and a latch 214, the second through groove 211 is formed in the fixing base body 213, a slot matched with the latch 214 is formed in an end surface of the fixing base body 213 facing the sliding groove 2311, and the latch 214 is latched in the slot;

an end of the latch 214 opposite to the slide groove 2311 has an extending portion extending toward the slide groove 2311, and an end of the extending portion passes through a groove wall of the second through groove 211 and then extends into the slide groove 2311 to form the sliding portion 212.

Thus, the first through groove 221 can be reduced in size such that both side surfaces thereof perpendicular to the central axis of the second spring 232 abut against corresponding side surfaces of the lower portion of the first clamping mechanism 23. During assembly, the lower portion of the first clamping mechanism 23 is first clamped into the first through groove 221, and then the clamping block 214 is clamped into the clamping groove from the clamping groove inlet of the fixing seat body 213 until the sliding portion 212 of the clamping block extends into the sliding grooves 2311 of the two clamping arms 231, so as to complete the horizontal sliding connection between the clamping arms 231 and the fixing seat 21.

In this embodiment, the fixing base body 213 and the latch 214 are screwed by the fastening member 215 to prevent the latch 214 from slipping out during operation.

In this embodiment, the side surface of the clamping arm 231 opposite to the corresponding first inclined surface 222 has a second inclined surface 2312 matched with the first inclined surface 222 in an attaching manner, so as to realize smooth transmission of the thrust of the sliding seat 22.

In this embodiment, as shown in fig. 15, the clamping arm 231 includes an abutting block 2313 extending into the first through slot 221 and a clamping jaw 2314 arranged on the abutting block 2313, and the second spring 232 is arranged at a position where the abutting block 2313 deviates from the clamping jaw 2314, so as to avoid interference on vertical blanking of the waste tungsten electrode.

Specifically, in order to accommodate the clamping of the tungsten electrode, a receiving groove 2315 for abutting against the outer circumferential surface of the tungsten electrode is formed in the end surface of the clamping jaw 2314 facing the other clamping arm 231, and the receiving groove 2315 extends downward to the lower end surface of the through abutting block 2313.

In this embodiment, the tungsten electrode feeding device further comprises a guide cylinder 26, wherein the guide cylinder 26 is arranged between the waste bin 24 and the first clamping mechanism 23, and is coaxially arranged with the blanking port 241, and is used for guiding the tungsten electrode to vertically fall into the waste bin body.

In this embodiment, the lifting driving device 25 is a vertically arranged telescopic cylinder, and includes a second cylinder 251 and a second piston rod 252, the second cylinder 251 is connected to the waste bin 24, the lower end of the second piston rod 252 is hermetically and slidably disposed in the second cylinder 251, and the upper end thereof is connected to the sliding seat 22.

In this embodiment, the waste bin 24 further includes an installation plate 42, and the installation plate 42 is disposed between the waste bin body and the fixing seat 21.

One end of the mounting plate 42 corresponding to the lifting driving device 25 horizontally extends toward the lifting driving device 25 to form an extension, and the upper end of the second cylinder 251 of the lifting driving device 25 passes through the extension and is in threaded connection with the extension.

Therefore, the lifting driving device 25 is arranged outside the waste bin body, so that the volume and the weight of the waste bin 24 can be reduced, and the device is convenient to hang and install.

The discharging device of the embodiment is applied to the automatic discharging process of the waste tungsten electrode as follows:

when the device does not work, the second piston rod 252 of the lifting driving device 25 keeps the retraction state, and the first inclined surface 222 of the first through groove 221 of the sliding seat 22 is not in contact with the clamping arm 231 of the clamping assembly, so that the first clamping mechanism 23 keeps the expansion state. After the welding gun rotates and moves downwards to enable the waste tungsten electrode to extend into the space between the two clamping arms 231 of the first clamping mechanism 23, the second piston rod 252 of the lifting driving device 25 moves upwards until the first inclined surface 222 abuts against the corresponding clamping arm 231 and provides a pushing force towards the other clamping arm 231 to the clamping arm 231, so that the two clamping arms 231 move oppositely to tighten the waste tungsten electrode, the chuck of the automatic clamping mechanism for the tungsten electrode on the welding gun is loosened, the second piston rod 252 of the lifting driving device 25 retracts, the first inclined surface 222 is not abutted against the corresponding clamping arm 231, the second spring 232 resets to enable the first clamping mechanism 23 to be unfolded to loosen the waste tungsten electrode, the waste tungsten electrode falls into the waste bin body, and the unloading work cycle is finished.

Example 2:

the present embodiment provides a tungsten electrode replacement system including a base 3, a moving mechanism 4, a welding torch 5, and the automatic tungsten electrode replacement device according to embodiment 1, as shown in fig. 16 and 17.

The automatic tungsten electrode replacing device is arranged on the base 3, and a second clamping mechanism is arranged in the welding gun 5 and used for clamping or loosening the tungsten electrode.

The moving mechanism 4 is connected between the base 3 and the welding gun 5 and is used for driving the welding gun 5 to move to a position above a discharge port of the automatic tungsten electrode replacing device, so that a second clamping mechanism in the welding gun 5 clamps a tungsten electrode extending out of the discharge port; or the welding gun 5 is driven to move until the waste tungsten electrode 6 clamped by the second clamping mechanism extends into the first clamping mechanism 23 of the automatic tungsten electrode replacing device, so that the first clamping mechanism 23 clamps the waste tungsten electrode 6.

In the present embodiment, the moving mechanism 4 includes a swing mechanism 41, a two-dimensional linear driving mechanism 42, and a rotational driving mechanism 43.

The rotating mechanism 41 is rotatably connected to the base 3 and is used for driving the welding gun 5 to horizontally rotate relative to the vertical central axis of the base 3.

The two-dimensional linear driving mechanism 42 is connected between the swing mechanism 41 and the rotation driving mechanism 43, and is used for driving the welding torch 5 to horizontally and linearly reciprocate relative to the swing mechanism 41 and driving the welding torch 5 to vertically reciprocate relative to the swing mechanism 41.

Specifically, the two-dimensional linear drive mechanism 42 includes a horizontal linear drive mechanism and a vertical linear drive mechanism. The horizontal linear driving mechanism is arranged on the rotating mechanism 41 and rotates along with the rotating mechanism 41, the vertical linear driving mechanism is arranged on the horizontal linear driving mechanism in a sliding mode, and the rotating driving mechanism 43 is arranged on the vertical linear driving mechanism in a sliding mode. Therefore, the welding gun 5 can be driven to horizontally and linearly reciprocate relative to the swing mechanism 41 through the reciprocating movement of the vertical linear driving mechanism on the horizontal linear driving mechanism, and the welding gun 5 can be driven to vertically reciprocate relative to the swing mechanism 41 through the up-and-down reciprocating movement of the rotary driving mechanism 43 on the vertical linear driving mechanism.

The horizontal linear driving mechanism and the vertical linear driving mechanism can adopt a conventional screw nut pair mechanism, and are not described again.

The rotary drive mechanism 43 is connected between the two-dimensional linear drive mechanism 42 and the welding gun 5, and is configured to drive the welding gun 5 to rotate in a vertical plane with respect to the two-dimensional linear drive mechanism 42.

Thus, the welding gun 5 can be adjusted to correspond to the first clamping mechanism 23 of the discharge device 2 by the combined movement of the swing mechanism 41, the two-dimensional linear driving mechanism 42 and the rotary driving mechanism 43, so as to perform the automatic discharge operation of the waste tungsten electrode; or adjusted to correspond to the discharge hole of the feeding device 1 so as to facilitate the automatic feeding operation of replacing the tungsten electrode.

Example 3:

this example provides a method for replacing a tungsten electrode using the tungsten electrode replacement system of example 2, including the steps of:

unloading step S1:

s1.1: the moving mechanism 4 drives the welding gun 5 to move until the waste tungsten electrode 6 clamped by the second clamping mechanism in the welding gun 5 extends into the first clamping mechanism 23 of the automatic tungsten electrode replacing device;

s1.2: the first clamping mechanism 23 clamps the waste tungsten electrode 6, and the second clamping mechanism loosens the waste tungsten electrode 6;

s1.3: under the driving of the driving mechanism, the first clamping mechanism 23 releases the waste tungsten electrode 6, so that the waste tungsten electrode 6 enters the waste bin 24 through a blanking port of the automatic tungsten electrode replacing device under the action of gravity.

A feeding step S2:

s2.1: a first pushing mechanism of the automatic tungsten electrode replacing device pushes a plurality of replacing tungsten electrodes 14 to slide towards the discharging station until a certain replacing tungsten electrode 14 is positioned on the discharging station;

s2.2: a second pushing mechanism 13 of the automatic tungsten electrode replacing device drives a replacing tungsten electrode 14 positioned at a discharging station to axially move to extend out of a discharging hole;

s2.3: the moving mechanism 4 drives the welding gun 5 to move to be positioned above the discharge port, and a second clamping mechanism in the welding gun 5 clamps the replacement tungsten electrode 14 extending out of the discharge port.

It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.