CN118218735B

CN118218735B - Tungsten wire welder

Info

Publication number: CN118218735B
Application number: CN202410642529.7A
Authority: CN
Inventors: 周红水; 张铭华; 钟德荣; 童赤松; 李祀韬
Original assignee: Ganzhou Haisheng Tungsten Industry Co ltd
Current assignee: Ganzhou Haisheng Tungsten Industry Co ltd
Priority date: 2024-05-23
Filing date: 2024-05-23
Publication date: 2024-07-12
Anticipated expiration: 2044-05-23
Also published as: CN118218735A

Abstract

The invention relates to the technical field of welding and discloses a tungsten wire welder, which comprises a bottom plate, wherein a power supply device and a controller are arranged on the bottom plate, the tungsten wire welder further comprises a butt joint part, the butt joint part is used for splicing tungsten wires and tungsten needles, the butt joint part comprises a rotary table, a limiting assembly, a convex die and a concave die, and a plurality of positioning blocks are arranged on the rotary table. In the invention, the convex die and the concave die are mutually close to each other to extrude the tungsten wire for bending forming, the concave die can send the tungsten needle to the welding position, compared with manual adjustment of the tungsten needle position of the tungsten wire, the tungsten needle is contacted with the tungsten wire through the movement of the concave die, the concave die is provided with the trough, the tungsten needle is positioned in the trough, the contact position of the tungsten needle and the tungsten wire is ensured to be accurate during welding, and the welding position is not easy to deviate, so the welding device has higher welding precision, saves the position adjustment time, can effectively improve the welding efficiency, and promotes the improvement of the yield and the output of products.

Description

Tungsten wire welder

Technical Field

The invention relates to the technical field of welding, in particular to a tungsten wire welding device.

Background

The electron source of the scanning electron microscope has three forms, namely a thermal emission electron source, a cold field emission electron source and a thermal field emission electron source. The common heat emission electron microscope adopts a heat emission electron source, a tungsten filament is made into a fork shape and heated to more than 2500K to emit electrons, the electron source has the advantages of easy manufacture, low required vacuum degree, the defect of about tens of microns of beam spots of the electron source and low resolution of the microscope. The cold field emission electron microscope adopts the field emission of the tungsten needle point at room temperature to generate electron beams, has the advantages of extremely fine electron beam spots which are in the order of tens of nanometers, high resolution, and has the defects of requiring the curvature radius of the tungsten needle point to be smaller than 100 nanometers, difficult manufacture and expensive equipment because the electron beams are prevented from sputtering the needle point after the residual gas molecules are ionized under high pressure, thereby damaging the field emission needle point. The thermal field emission electron microscope adopts field emission at high temperature to generate electron beams, namely, a field emission tungsten needle is welded on a heatable tungsten filament, and the tungsten filament is heated to 1500K-2000K in working, so that the curvature radius of the tungsten needle tip can be more than 100 nanometers, and the thermal field emission electron microscope has lower manufacturing cost than a cold field emission electron microscope due to low vacuum requirements on the field emission tungsten needle tip and an electron gun, so that the thermal field emission electron microscope has higher competitiveness, and the high-resolution scanning electron microscope in the market at present is mainly the thermal field emission electron microscope.

The thermal field emission scanning electron microscope consists of a field emission electron gun, an electron beam propeller, a condensing lens (electromagnetic lens), an aperture, an objective lens (electromagnetic lens), a scanning coil, a pole piece and a detector. The gun body consists of a filament, an anode, a cathode, a focusing coil, a deflection coil and the like, wherein the filament consists of a curved tungsten wire and a tungsten needle, and the tungsten wire and the tungsten needle are mostly processed by adopting a welding process.

The present application number is CN 201310124064.8's chinese invention patent a tungsten wire welding ware, including metal base, fixed bolster, first insulating hard board, second insulating hard board, first threaded rod, second threaded rod, metal pole, first pointed metal electrode, second pointed metal electrode, insulator spindle, adjustable transformer, wherein: the two output ends of the adjustable transformer are respectively connected with the first pointed metal electrode and the second pointed metal electrode; the first threaded rod, the second threaded rod and the fixed bracket are sequentially connected to the metal base; the metal rod is connected with the first threaded rod and the second insulating hard plate used for clamping the tungsten needle; the first insulating hard plate is used for clamping the tungsten filament and is connected with the fixing bracket; a gap is arranged between the free end of the second insulating hard plate and the free end of the first insulating hard plate in an opposite way; the first pointed metal electrode is connected with the second threaded rod through the insulating rod. The electrode and the tungsten wire cannot be stuck together, and the electrode has the advantages of simple structure, simplicity in operation and the like.

In the above patent application, each welding of the tungsten wire and the tungsten needle is required to be separately installed, the accuracy of each installation position is difficult to be ensured by manually installing the tungsten wire and the tungsten needle, and the installation efficiency is low, resulting in low product yield and small yield.

Disclosure of Invention

The invention aims at: in order to solve the above problems, a tungsten wire welder is proposed.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

The utility model provides a tungsten filament welding ware, includes the bottom plate, be provided with power supply unit and controller on the bottom plate, still include the interfacing part, the interfacing part is used for concatenation tungsten filament and tungsten needle, and the interfacing part includes carousel, spacing subassembly, protruding mould and die utensil, be provided with a plurality of locating pieces on the carousel, spacing subassembly includes locating fork, cutting blade and briquetting, protruding position is provided with the constant head tank on the protruding mould to be provided with first electrode on the protruding mould, be provided with the through-hole on the die to be provided with the second electrode on the die, the one end of through-hole is provided with the silo, be provided with first mount pad, third mount pad and fourth mount pad on the bottom plate, be provided with second mount pad and second ratchet on the first mount pad, be provided with driving piece and first ratchet on the second mount pad, be provided with first support arm and second support arm on the output of driving piece, the open end of first support arm is provided with the second pawl, first pawl is provided with the second ratchet on the second ratchet piece, the second ratchet is provided with the second ratchet on the second ratchet piece on the second mount pad and the second ratchet piece sets up the second ratchet piece on the second ratchet piece, the second ratchet piece is provided with the second ratchet piece on the opposite direction.

Preferably, the second mount pad sets up the lower extreme at first mount pad, the second ratchet sets up the upper end at first mount pad, first mount pad rotates with the second ratchet to be connected, the driving piece sets up the lower extreme at the second mount pad, first ratchet sets up the upper end at the second mount pad, the second mount pad rotates with first ratchet to be connected, first ratchet, carousel and second ratchet three coaxial arrangement, carousel and first ratchet fixed connection.

Preferably, the first pawl is rotatably connected with the first support arm, the first pawl is elastically connected with the first support arm through a torsion spring, the second pawl is rotatably connected with the second support arm, and the second pawl is elastically connected with the second support arm through a torsion spring.

Preferably, the positioning blocks are arranged in a plurality, the positioning blocks are uniformly arranged annularly around the turntable, and the positioning blocks are arranged at positions 5-8mm away from the peripheral edge of the turntable.

Preferably, a plurality of grooves are formed in the periphery of the rotary table, the positioning blocks and the grooves are alternately arranged around the rotary table, and a collecting groove is formed between the first mounting seat and the fourth mounting seat.

Preferably, the first telescopic part is arranged at the bottom of the second ratchet wheel, a connecting plate is arranged at the telescopic end of the first telescopic part, the positioning fork, the cutting blade and the pressing block are fixedly connected with the connecting plate, and the positioning fork is matched with the positioning block in a clamping manner.

Preferably, the convex part on the convex die and the concave part on the concave die are both arc-shaped, the bottoms of the first electrode and the second electrode are both provided with conical protrusions, the first electrode and the second electrode are electrically connected with the power supply device, the conical protrusions at the bottom of the first electrode extend to the inside of the positioning groove, the positioning groove and the through hole are both cylindrical, the inner diameters of the positioning groove and the through hole are the same, and the trough is arranged on one side, far away from the convex die, of the concave die.

Preferably, the second telescopic member is arranged at the upper end of the third mounting seat, the third telescopic member is arranged at the upper end of the fourth mounting seat, and the second telescopic member and the third telescopic member are arranged on the same horizontal axis.

Preferably, a plurality of through grooves are formed in the second ratchet wheel.

In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:

1. According to the welding device, the butt joint part is arranged, so that the tungsten wire and the tungsten needle are spliced, the power supply device is used for supplying power to the first electrode and the second electrode, the tungsten needle contacted between the first electrode and the second electrode is partially short-circuited, the tungsten needle is heated and melted to be adhered to the tungsten wire by larger short-circuit current, the butt joint part is provided with the convex die and the concave die, the convex die and the concave die are mutually close to be capable of extruding the tungsten wire to bend and shape the tungsten wire, and meanwhile, the concave die can be used for conveying the tungsten needle to a welding position.

2. According to the welding device, the turntable, the positioning block and the driving mechanism are arranged, continuous traction of the tungsten wire is achieved under the driving of the driving mechanism, meanwhile, the first telescopic piece is arranged on the driving mechanism, the cutting blade is arranged on the telescopic end of the first telescopic piece, and the tungsten wire can be cut off through the cutting blade, so that extrusion bending forming of the tungsten wire is facilitated, and compared with an existing welding device, the welding device needs to put tungsten needles in operation, automatic operation of tungsten wire forming and butt welding is achieved, and therefore labor capacity of operators is effectively reduced, and welding efficiency is greatly improved while welding accuracy is guaranteed.

3. The application is provided with the first ratchet wheel, the second ratchet wheel, the first pawl and the second pawl are driven to reciprocate by the driving piece, the unidirectional rotation of the turntable and the bidirectional reciprocating rotation of the second ratchet wheel are realized, and the continuous traction of the tungsten wire is further realized by the cooperation of the positioning block and the positioning fork, so that the processing efficiency is improved.

4. According to the welding device, the groove is formed in the turntable, the collecting groove is formed in the bottom plate, the male die can drive the welded tungsten wire to move through pushing of the second telescopic piece, so that the tungsten wire falls from the groove and enters the collecting groove, and therefore the welding device can automatically discharge and collect materials, and the machining efficiency is improved through reducing manual operation.

Drawings

FIG. 1 shows a schematic view of the overall structure of a welder provided according to an embodiment of the present invention;

FIG. 2 shows a schematic overall structure of a docking component provided in accordance with an embodiment of the present invention;

FIG. 3 illustrates an exploded view of a docking component provided in accordance with an embodiment of the present invention;

FIG. 4 is a schematic diagram showing the structure of a driving member, a turntable and a second ratchet wheel according to an embodiment of the present invention;

FIG. 5 shows a schematic diagram of a turntable according to an embodiment of the present invention;

Fig. 6 shows a schematic view of a telescopic end structure of a first telescopic member according to an embodiment of the present invention;

FIG. 7 shows an exploded view of a positioning fork, a cutting blade and a press block provided in accordance with an embodiment of the present invention;

FIG. 8 shows a schematic cross-sectional structure of a male die provided in accordance with an embodiment of the present invention;

Fig. 9 shows a schematic cross-sectional structure of a female die according to an embodiment of the invention.

Legend description:

1. A bottom plate; 2. a power supply device; 3. a first mount; 4. a second mounting base; 5. a driving member; 6. a first arm; 7. a second arm; 8. a first pawl; 9. a second pawl; 10. a turntable; 11. a positioning block; 12. a groove; 13. a first ratchet; 14. a second ratchet; 15. a first telescopic member; 16. a connecting plate; 17. a positioning fork; 18. a cutting blade; 19. briquetting; 20. a third mount; 21. a second telescopic member; 22. a male die; 23. a positioning groove; 24. a first electrode; 25. a fourth mount; 26. a third telescopic member; 27. a concave die; 28. a through hole; 29. a trough; 30. a second electrode; 31. a collection tank; 32. a through groove; 33. and a controller.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-9, the present invention provides a technical solution:

The utility model provides a tungsten filament welding ware, including bottom plate 1, be provided with power supply unit 2 and controller 33 on the bottom plate 1, still include the interfacing part, the interfacing part is used for concatenation tungsten filament and tungsten needle, the interfacing part includes carousel 10, spacing subassembly, terrace die utensil 22 and die utensil 27, be provided with a plurality of locating pieces 11 on the carousel 10, spacing subassembly includes locating fork 17, cut blade 18 and briquetting 19, terrace die utensil 22 epirelief position is provided with constant head tank 23, and be provided with first electrode 24 on the terrace die 22, be provided with through-hole 28 on the concave die utensil 27, and be provided with second electrode 30 on the concave die utensil 27, the one end of through-hole 28 is provided with silo 29, be provided with first mount pad 3 on the bottom plate 1, third mount pad 20 and fourth mount pad 25, be provided with second mount pad 4 and second ratchet 14 on the first mount pad 3, be provided with driving piece 5 and first ratchet 13 on the output of driving piece 5, be provided with first support arm 6 and second support arm 7 on the output end, the open end of first support arm 6 is provided with first pawl 8 on the first ratchet piece 9, the second ratchet piece is provided with first ratchet piece 14 on the second ratchet piece 14, the second ratchet piece is provided with the second ratchet piece 14 on the second ratchet piece 14 opposite direction of ratchet piece, the second ratchet piece is provided with the second ratchet piece 14 on the second ratchet piece of the second ratchet piece 14, the second ratchet piece is provided with the second ratchet piece on the second ratchet piece 14 on the second ratchet piece is provided with the second ratchet piece on the end of the first ratchet piece 13 opposite side of the end of the first mount 21.

During welding, an operator plugs a tungsten needle into the through hole 28, the tungsten needle is completely placed in the trough 29, the first telescopic piece 15 stretches to enable the limiting component to move downwards, the pressing block 19 presses a tungsten wire, the positioning fork 17 clamps the positioning block 11, then the driving piece 5 starts to drive the first support arm 6 and the second support arm 7 to synchronously rotate, at the moment, the first pawl 8 pushes the first ratchet 13 to rotate, the first ratchet 13, the turntable 10 and the second ratchet 14 synchronously rotate, after the tungsten wire is pulled to be partially positioned between two adjacent positioning blocks 11, the driving piece 5 stops simultaneously, the first telescopic piece 15 contracts, then the driving piece 5 reverses, at the moment, the first pawl 8 cannot push the first ratchet 13 and the turntable 10 to rotate, the second pawl 9 can push the second ratchet 14 to rotate, the second ratchet 14 reverses to reset, after reset, the driving piece 5 stops driving, the first telescopic piece 15 stretches again, the cutting blade 18 cuts off the tungsten wire, a section of tungsten wire is positioned between two adjacent positioning blocks 11, then the third telescopic piece 26 stretches the concave die 27 to be close to the convex die 22, the tungsten wire is extruded by the concave die 22 and the convex die 22, the tungsten wire is extruded by the first pawl 8 and the tungsten wire is extruded by the convex die 27, and the tungsten wire is simultaneously heated, and the tungsten wire is cut off, and the tungsten wire is welded by the electrode is electrically-cut off, and the tungsten wire is welded, and after the tungsten wire is electrically-cut, and the tungsten needle is completely has a short wire is welded, and has a short wire electrode is formed.

Specifically, as shown in fig. 3, the second mounting seat 4 is disposed at the lower end of the first mounting seat 3, the second ratchet wheel 14 is disposed at the upper end of the first mounting seat 3, the first mounting seat 3 is rotationally connected with the second ratchet wheel 14, the driving member 5 is disposed at the lower end of the second mounting seat 4, the first ratchet wheel 13 is disposed at the upper end of the second mounting seat 4, the second mounting seat 4 is rotationally connected with the first ratchet wheel 13, and the first ratchet wheel 13, the turntable 10 and the second ratchet wheel 14 are coaxially disposed, and the turntable 10 is fixedly connected with the first ratchet wheel 13. The first pawl 8 is rotatably connected with the first arm 6, and the first pawl 8 is elastically connected with the first arm 6 through a torsion spring, the second pawl 9 is rotatably connected with the second arm 7, and the second pawl 9 is elastically connected with the second arm 7 through a torsion spring. The spring force of the torsion spring keeps the first pawl 8 in contact with the teeth of the outer periphery of the first ratchet wheel 13 and keeps the second pawl 9 in contact with the teeth of the outer periphery of the second ratchet wheel 14.

Specifically, as shown in fig. 3,4, 5, 6 and 7, a plurality of positioning blocks 11 are provided, the plurality of positioning blocks 11 are uniformly arranged annularly around the turntable 10, and the positioning blocks 11 are arranged at a position 5-8mm away from the peripheral edge of the turntable 10. The first telescopic piece 15 is arranged at the bottom of the second ratchet wheel 14, a connecting plate 16 is arranged at the telescopic end of the first telescopic piece 15, a positioning fork 17, a cutting blade 18 and a pressing block 19 are fixedly connected with the connecting plate 16, and the positioning fork 17 is matched with the positioning block 11 in a clamping manner. The first telescopic piece 15 can drive the limiting assembly to move, so that the positioning fork 17 is clamped with the positioning blocks 11, the first ratchet wheel 13, the rotary table 10 and the second ratchet wheel 14 can synchronously rotate at the moment, the pressing block 19 can press tungsten wires, the tungsten wires are pulled to feed along with rotation of the rotary table 10, a part of the tungsten wires are positioned between two adjacent positioning blocks 11, and the cutting blade 18 can cut off the tungsten wires, so that one end of the tungsten wires can be left between the two adjacent positioning blocks 11.

Specifically, as shown in fig. 1, 3, 4 and 5, a plurality of grooves 12 are formed in the periphery of the turntable 10, the positioning blocks 11 and the grooves 12 are alternately arranged around the turntable 10, and a collecting groove 31 is formed between the first mounting seat 3 and the fourth mounting seat 25. The second telescopic member 21 is arranged at the upper end of the third mounting seat 20, the third telescopic member 26 is arranged at the upper end of the fourth mounting seat 25, and the second telescopic member 21 and the third telescopic member 26 are arranged on the same horizontal axis. The third expansion piece 26 can push the female die 27 to move, so that the female die 27 and the male die 22 extrude tungsten wires to be bent and formed. The second telescopic piece 21 can drive the convex mold 22 to move, and the convex mold 22 can push the welded filament to move, so that the filament falls from the groove 12 and enters the collecting groove 31.

Specifically, as shown in fig. 1, 3, 8 and 9, the convex portion on the male die 22 and the concave portion on the female die 27 are both circular arc, the circular arc structure is arranged in the process that the female die 27 is close to the male die 22 to squeeze the tungsten filament, so that the tungsten filament can be bent into circular arc, the bottoms of the first electrode 24 and the second electrode 30 are both provided with conical protrusions, the first electrode 24 and the second electrode 30 are both electrically connected with the power supply device 2, the conical protrusions at the bottom of the first electrode 24 extend to the inside of the positioning groove 23, the positioning groove 23 and the through hole 28 are both cylindrical, the inner diameters of the positioning groove 23 and the through hole 28 are the same, and the trough 29 is arranged on one side, away from the male die 22, of the female die 27. The conical bulge at the bottom of the first electrode 24 can contact the end part of the tungsten needle, the conical bulge at the bottom of the second electrode 30 can contact the surface of the tungsten needle at the contact part of the tungsten needle and the tungsten wire, at the moment, the short circuit is generated by electrifying, and a part of the tungsten needle can be heated and melted by the larger short circuit current, so that the tungsten needle can be welded on the tungsten wire.

Specifically, as shown in fig. 1, the second ratchet 14 is provided with a plurality of through grooves 32. The through groove 32 is used for reducing the weight of the second ratchet wheel 14, so that the driving piece 5 can be of a lower power type, thereby achieving the purpose of energy saving.

In summary, according to the tungsten wire welder provided in this embodiment, the butt-joint component is provided to realize the splicing of the tungsten wire and the tungsten needle, and then the power supply device 2 is used to energize the first electrode 24 and the second electrode 30, so that the tungsten needle contacted between the first electrode 24 and the second electrode 30 is partially shorted, the tungsten needle is heated and melted by the larger short-circuit current and is adhered to the tungsten wire, the butt-joint component is provided with the male die 22 and the female die 27, the male die 22 and the female die 27 are close to each other and can extrude the tungsten wire to bend and form the tungsten wire, and meanwhile, the female die 27 can send the tungsten needle to the welding position.

The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a tungsten filament welding ware, includes bottom plate (1), be provided with power supply unit (2) and controller (33) on bottom plate (1), its characterized in that still includes the interfacing part, the interfacing part is used for concatenation tungsten filament and tungsten needle, and the interfacing part includes carousel (10), spacing subassembly, punch (22) and die (27), be provided with a plurality of locating pieces (11) on carousel (10), spacing subassembly includes locating fork (17), cutting blade (18) and briquetting (19), the protruding position of punch (22) is provided with constant head tank (23) to be provided with first electrode (24) on the punch (22), be provided with through-hole (28) on die (27) and be provided with second electrode (30) on die (27), the one end of through-hole (28) is provided with silo (29);

Be provided with first mount pad (3), third mount pad (20) and fourth mount pad (25) on bottom plate (1), be provided with second mount pad (4) and second ratchet (14) on first mount pad (3), be provided with driving piece (5) and first ratchet (13) on second mount pad (4), be provided with first support arm (6) and second support arm (7) on the output of driving piece (5), the open end of first support arm (6) is provided with first pawl (8), the open end of second support arm (7) is provided with second pawl (9), the joint cooperation of first pawl (8) and first ratchet (13) periphery, the joint cooperation of second pawl (9) and second ratchet (14) periphery, the direction of tooth is opposite on first ratchet (13) and second ratchet (14), be provided with first support arm (15) on second ratchet (14), third support arm (7) is provided with second pawl (21) on flexible piece (21), second support arm (26) is provided with flexible piece (21), flexible piece (21) is provided with on flexible piece (21).

2. The tungsten wire welder according to claim 1, wherein the second mounting seat (4) is arranged at the lower end of the first mounting seat (3), the second ratchet wheel (14) is arranged at the upper end of the first mounting seat (3), the first mounting seat (3) is rotationally connected with the second ratchet wheel (14), the driving piece (5) is arranged at the lower end of the second mounting seat (4), the first ratchet wheel (13) is arranged at the upper end of the second mounting seat (4), the second mounting seat (4) is rotationally connected with the first ratchet wheel (13), the rotary table (10) and the second ratchet wheel (14) are coaxially arranged, and the rotary table (10) is fixedly connected with the first ratchet wheel (13).

3. A tungsten wire welder as claimed in claim 1, wherein the first pawl (8) is rotationally connected to the first arm (6) and the first pawl (8) is resiliently connected to the first arm (6) by a torsion spring, the second pawl (9) is rotationally connected to the second arm (7) and the second pawl (9) is resiliently connected to the second arm (7) by a torsion spring.

4. A tungsten wire welder according to claim 1, wherein a plurality of positioning blocks (11) are provided, the plurality of positioning blocks (11) are uniformly arranged annularly around the turntable (10), and the positioning blocks (11) are arranged at a position 5-8mm away from the peripheral edge of the turntable (10).

5. A tungsten wire welder as claimed in claim 4, wherein a plurality of grooves (12) are provided on the periphery of the turntable (10), the positioning blocks (11) and the grooves (12) are alternately arranged around the turntable (10), and a collecting groove (31) is provided between the first mounting seat (3) and the fourth mounting seat (25).

6. A tungsten wire welder as set forth in claim 1 wherein said first telescoping member (15) is disposed at a bottom of said second ratchet (14), a connecting plate (16) is disposed at a telescoping end of said first telescoping member (15), said positioning fork (17), said cutting blade (18) and said pressing block (19) are fixedly connected to said connecting plate (16), and said positioning fork (17) is engaged with said positioning block (11).

7. Tungsten wire welder according to claim 1, characterized in that the convex part on the male die (22) and the concave part on the female die (27) are arc-shaped, the bottoms of the first electrode (24) and the second electrode (30) are provided with conical protrusions, the first electrode (24) and the second electrode (30) are electrically connected with the power supply device (2), the conical protrusions at the bottom of the first electrode (24) extend to the inside of the positioning groove (23), the positioning groove (23) and the through hole (28) are cylindrical, the inner diameters of the positioning groove (23) and the through hole (28) are the same, and the trough (29) is arranged on one side, far away from the male die (22), of the female die (27).

8. A tungsten wire welder according to claim 1, characterized in that the second telescopic member (21) is arranged at the upper end of the third mounting seat (20), the third telescopic member (26) is arranged at the upper end of the fourth mounting seat (25), and the second telescopic member (21) and the third telescopic member (26) are arranged on the same horizontal axis.

9. A tungsten wire welder as defined in claim 1 wherein a plurality of through slots (32) are provided in the second ratchet (14).