Tungsten electrode device

Abstract

The tungsten electrode device comprises a nozzle, an elastic clamping sleeve and a centering device, the nozzle is sequentially provided with a mounting hole, a connecting hole and a conical hole in the axial direction of the nozzle, the mounting hole, the connecting hole and the conical hole are sequentially communicated, a nozzle opening of the nozzle is formed at the small opening end of the conical hole, and the elastic clamping sleeve comprises two elastic clamping heads, a mounting seat and a tungsten electrode hole. The two elastic chucks are arranged on the mounting base, one end of the tungsten electrode hole is communicated with the outside from the end, away from the elastic chucks, of the mounting base, the other end of the through hole is communicated with the outside from the position between the two elastic chucks, the centering device is arranged in the connecting hole, the outer wall of the centering device is attached to the inner wall of the connecting hole, the centering device is provided with a through hole, and the through hole and the tungsten electrode hole are coaxially arranged. The device has the advantages that the tungsten electrode sequentially penetrates through the tungsten electrode hole, the mounting hole, the through hole, the connecting hole and the conical hole, the position of the tungsten electrode is accurately fixed by the aid of the elastic jacket and the centering device, the nozzle is used for being connected with a welding gun handle and used for transmitting jetted tiny plasma arc flame flow, and the device is simple in structure and convenient to mount, welding cost is reduced, and production efficiency is improved. And the welding quality is ensured.

Description

Technical Field

[0001] The utility model relates to the field of welding equipment, in particular to a tungsten electrode device. Background Art

[0002] In modern welding processes, the micro-plasma welding machine is regarded as the first choice for experts in thin-piece welding. It has a large energy density, a strong arc directivity, a strong penetration ability, can produce a stable keyhole effect, making the heat-affected zone relatively narrow. The welding current can be as small as 0.1 A and burn stably, which is especially suitable for precision welding of stainless steel thin pieces with a thickness of 0.05 - 2.5 mm. It has a small current, melting rate, and penetration depth that cannot be replaced by argon arc welding; the weld seam is beautiful, and it is a good alternative process to laser welding, suitable for precision welding of various metal and their alloy materials such as low-carbon steel, stainless steel, alloy steel, copper, nickel, titanium, molybdenum, tungsten, gold, platinum, rhodium, and palladium. Therefore, precision micro-plasma welding is widely used because it can achieve high-precision and high-quality welding.

[0003] However, there are some problems in the tungsten electrode device of the existing micro-plasma welding torch during use. For example, the positioning accuracy of the tungsten electrode is not high enough, the stability during welding is insufficient, and deviation is likely to occur, resulting in insufficient welding accuracy and unstable quality; the cooling effect of the tungsten electrode is not good, which easily causes the nozzle to overheat and shortens the service life of the tungsten electrode; in addition, the structure of the existing device is complex, the installation and maintenance are difficult, and the replacement cost is relatively high. Summary of the Utility Model

[0004] In view of the above-mentioned disadvantages of the existing technology, the purpose of the present utility model is to provide a tungsten electrode device to solve the technical problems of low positioning accuracy and complex structure in the existing technology.

[0005] To achieve the above purpose and other related purposes, the present utility model provides a tungsten electrode device, including:

[0006] A nozzle, which is sequentially provided with a mounting hole, a connecting hole, and a tapered hole along its axial direction. The mounting hole, the connecting hole, and the tapered hole are sequentially connected, and the small-end of the tapered hole forms the nozzle orifice of the nozzle;

[0007] An elastic bushing, which includes two elastic chucks, a mounting seat, and a tungsten electrode hole. The two elastic chucks are arranged on the mounting seat. One end of the tungsten electrode hole is connected to the outside from the end of the mounting seat away from the elastic chucks, and the other end of the tungsten electrode hole is connected to the outside between the two elastic chucks;

[0008] An aligner, which is arranged in the connecting hole. The outer wall of the aligner fits with the inner wall of the connecting hole, and the aligner is provided with a through hole, and the through hole is coaxially arranged with the tungsten electrode hole.

[0009] The advantages of adopting the above technical solution are as follows: The tungsten electrode passes through the tungsten electrode hole, the mounting hole, the through hole, the connection hole and the tapered hole in sequence. The elastic collet and the centering device are used to accurately fix the position of the tungsten electrode. The nozzle is used to connect with the welding torch handle to transmit the tiny plasma arc flame flow. At the same time, the structure is simple, the installation is convenient, the welding cost is reduced, and the welding quality is guaranteed.

[0010] Optionally, a guiding inclined surface is further provided on the outer side of the end of the elastic chuck away from the mounting seat.

[0011] Optionally, after the elastic collet is installed in place, a heat dissipation gap is left between the elastic chuck and the centering device.

[0012] Optionally, the centering device is a prism, and the outer wall edge of the centering device fits with the inner wall of the connection hole.

[0013] Optionally, the edges and corners of the centering device are in arc transition, and the arc transition surface of the centering device matches the inner wall of the connection hole.

[0014] Optionally, the centering device is made of ceramic material.

[0015] Optionally, the outer wall of the mounting seat is provided with threads, and the outer wall of the nozzle is provided with threads.

[0016] Optionally, the material of the elastic collet is copper, and the two elastic chucks and the mounting seat are integrally formed.

[0017] Optionally, two limiting openings are further provided on the end face of the mounting seat away from the elastic chuck. The limiting openings are arranged oppositely, and the limiting openings connect the tungsten electrode hole with the outside of the mounting seat.

[0018] Optionally, the central axes of the mounting hole, the connection hole and the tapered hole coincide.

[0019] As described above, a tungsten electrode device of the present invention has the following beneficial effects: The tungsten electrode passes through the tungsten electrode hole, the mounting hole, the through hole, the connection hole and the tapered hole in sequence. The elastic collet and the centering device are used to accurately fix the position of the tungsten electrode. The nozzle is used to connect with the welding torch handle to transmit the tiny plasma arc flame flow. At the same time, the structure is simple, the installation is convenient, the welding cost is reduced, and the welding quality is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It shows a schematic structural diagram of each component in an embodiment of the present invention;

[0021] Figure 2 It shows a schematic structural diagram in an assembled state in an embodiment of the present invention;

[0022] Figure 3 It shows a schematic cross-sectional structure diagram of the nozzle in an embodiment of the present utility model;

[0023] Figure 4 It shows a schematic structure diagram of the elastic bushing in an embodiment of the present utility model;

[0024] Figure 5 It shows a schematic cross-sectional structure diagram of the assembled state in an embodiment of the present utility model.

[0025] Description of part numbers

[0026] 1 Nozzle

[0027] 101 Mounting hole

[0028] 102 Connecting hole

[0029] 103 Tapered hole

[0030] 2 Elastic bushing

[0031] 201 Elastic chuck

[0032] 202 Mounting base

[0033] 203 Tungsten electrode hole

[0034] 3 Centering device

[0035] 301 Through hole Specific embodiments

[0036] The following uses specific specific examples to illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model.

[0037] Please refer to Figures 1 to 5It should be noted that the illustrations provided in this embodiment only schematically illustrate the basic concept of the present utility model. The illustrations only show the components related to the present utility model, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component during its implementation can be arbitrarily changed, and the component layout type may also be more complex. The structures, proportions, sizes, etc. shown in the attached drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope under which the present utility model can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope under which the present utility model can be implemented.

[0038] Please refer to Figures 1 through 5 as shown, the present utility model provides a tungsten electrode device, including:

[0039] A nozzle 1, along the axial direction of the nozzle 1, there are successively arranged a mounting hole 101, a connection hole 102, and a tapered hole 103. The mounting hole 101, the connection hole 102, and the tapered hole 103 are successively connected. The small end of the tapered hole 103 forms the nozzle opening of the nozzle 1. The nozzle 1 is used to connect with the welding torch handle to transmit the sprayed tiny plasma arc flame flow;

[0040] An elastic collet 2, the elastic collet 2 includes two elastic chucks 201, a mounting seat 202, and a tungsten electrode hole 203. The two elastic chucks 201 are arranged on the mounting seat 202. One end of the tungsten electrode hole 203 is connected to the outside from the end of the mounting seat 202 away from the elastic chucks 201, and the other end of the tungsten electrode hole 203 is connected to the outside between the two elastic chucks 201;

[0041] An aligner 3, the aligner 3 is arranged in the connection hole 102. The outer wall of the aligner 3 fits with the inner wall of the connection hole 102. There is a through hole 301 on the aligner 3, and the through hole 301 is coaxially arranged with the tungsten electrode hole 203.

[0042] It should also be noted that the tungsten electrode is successively passed through the tungsten electrode hole 203, the mounting hole 101, the through hole 301, the connection hole 102, and the tapered hole 103 to achieve precise fixation of the tungsten electrode position.

[0043] Furthermore, the two elastic chucks 201 are two-piece chucks with a 180° clamping opening, featuring high elasticity, high toughness, durability, and non-deformation. They can not only effectively cool the tungsten electrode and extend its service life, but also fit tightly and firmly hold the tungsten electrode as the installation chuck of the tungsten electrode, ensuring good electrical conductivity.

[0044] Exemplarily, a guiding inclined surface is further provided on the outer side of the end of the elastic chuck 201 away from the mounting seat 202.

[0045] It should also be noted that the purpose of setting the guiding inclined surface is to facilitate the installation and guiding during the installation of the elastic chuck 201.

[0046] Exemplarily, after the elastic sleeve 2 is installed in place, a heat dissipation gap is left between the elastic chuck 201 and the centering device 3.

[0047] It should also be noted that the purpose of leaving the heat dissipation gap is to increase the heat dissipation capacity, control the deformation during heating, reduce the condition that the centering device 3 is easily damaged due to overheating, and at the same time, leaving the heat dissipation gap avoids the influence of thermal expansion and contraction on the elastic chuck 201, resulting in deformation and interfering with the positioning accuracy.

[0048] Exemplarily, the diameter of the mounting hole 101 is smaller than that of the connecting hole 102, and a transition inclined surface is provided at the connection between the mounting hole 101 and the connecting hole 102.

[0049] It should also be noted that the diameter of the large end of the tapered hole 103 is the same as that of the connecting hole 102.

[0050] Exemplarily, the centering device 3 is a prism, and the outer wall edges of the centering device 3 are in contact with the inner wall of the connecting hole 102.

[0051] Exemplarily, the edges of the centering device 3 have an arc transition, and the arc transition surface of the centering device 3 matches the inner wall of the connecting hole 102.

[0052] It should also be noted that the purpose of using a prism for the centering device 3 is to reduce the contact area between the centering device 3 and the connecting hole 102 and improve the cooling efficiency.

[0053] Exemplarily, the centering device 3 is made of ceramic material.

[0054] It should also be noted that the purpose of using ceramic material for the centering device 3 is to utilize its excellent properties such as high hardness, wear resistance, corrosion resistance, and high-temperature stability to meet the performance requirements in specific application scenarios, extend the service life of the component, and reduce the maintenance cost.

[0055] Exemplarily, the outer wall of the mounting base 202 is provided with threads, and the outer wall of the nozzle 1 is provided with threads.

[0056] It should also be noted that the purpose of setting the threads is to provide a stable connection method when the outer walls of the mounting base 202 and the nozzle 1 are connected to the welding machine part.

[0057] Exemplarily, the material of the elastic bushing 2 is copper, and the two elastic chucks 201 and the mounting base 202 are integrally formed.

[0058] It should also be noted that the copper material of the elastic bushing 2 has excellent electrical conductivity, thermal conductivity, plasticity, ductility, corrosion resistance, and economy. These advantages enable the elastic bushing made of copper to play an important role in the tungsten electrode device, ensuring the stable performance and service life of the device.

[0059] Exemplarily, two limiting openings are further provided on the end face of the mounting base 202 away from the elastic chuck 201. The limiting openings are arranged opposite to each other, and the limiting openings connect the tungsten electrode hole 203 with the outside of the mounting base 202.

[0060] It should also be noted that the purpose of setting the limiting openings is for the interference fit between the tungsten electrode and the elastic bushing 2 to accurately install the tungsten electrode; the purpose of setting the mounting base 202 is for limiting after being threadedly connected to the welding machine to improve the fixing effect of the device.

[0061] Exemplarily, the central axes of the mounting hole 101, the connecting hole 102, and the tapered hole 103 coincide.

[0062] It should also be noted that finally, the centering device 3 is used to accurately fix the position of the tungsten electrode and is on the same axis as the nozzle orifice of the nozzle 1.

[0063] During use, the operator inserts the tungsten electrode into the centering device 3 and the elastic bushing 2, and then installs it into the mounting hole 101 and the connecting hole 102 in the nozzle 1 to complete the assembly of the tungsten electrode and the tungsten electrode device;

[0064] Subsequently, the outer wall threads of the elastic bushing 2 of the assembled tungsten electrode device and the outer wall threads of the nozzle 1 are respectively fixedly connected to the welding torch, and the assembly position is finely adjusted to achieve the best assembly state before welding.

[0065] In one embodiment, a limiting ring is further provided on the outer wall of the nozzle 1. The limiting ring is used for limiting after the nozzle 1 is connected to the welding machine base to improve the fixing effect of the device.

[0066] In summary, for a tungsten electrode device adopting the present utility model, the tungsten electrode sequentially passes through the tungsten electrode hole 203, the mounting hole 101, the through hole 301, the connection hole 102 and the tapered hole 103. The elastic collet 2 and the centering device 3 are used to accurately fix the position of the tungsten electrode. The nozzle 1 is used to connect with the welding torch handle to transmit the tiny plasma arc flame flow for spraying. At the same time, the structure is simple, the installation is convenient, the welding cost is reduced, and the welding quality is guaranteed.

[0067] The above embodiments only exemplarily illustrate the principle and its effects of the present utility model, rather than limiting the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A tungsten electrode device, characterized in that: include: A nozzle (1), wherein the nozzle (1) is provided with a mounting hole (101), a connecting hole (102) and a tapered hole (103) in sequence along its axial direction, the mounting hole (101), the connecting hole (102) and the tapered hole (103) are connected in sequence, and the small end of the tapered hole (103) forms a nozzle opening of the nozzle (1); An elastic jacket (2), the elastic jacket (2) comprising two elastic chucks (201), a mounting seat (202) and a tungsten electrode hole (203), the two elastic chucks (201) being arranged on the mounting seat (202), one end of the tungsten electrode hole (203) being connected to the outside from the end of the mounting seat (202) away from the elastic chuck (201), and the other end of the tungsten electrode hole (203) being connected to the outside from between the two elastic chucks (201); A centering device (3), the centering device (3) is arranged in the connecting hole (102), the outer wall of the centering device (3) is in contact with the inner wall of the connecting hole (102), the centering device (3) is provided with a through hole (301), and the through hole (301) is coaxially arranged with the tungsten electrode hole (203).

2. A tungsten electrode device according to claim 1, characterized in that: A guiding inclined surface is also provided on the outer side of the end of the elastic clamp (201) away from the mounting seat (202).

3. A tungsten electrode device according to claim 1, characterized in that: After the elastic jacket (2) is installed in place, a heat dissipation gap is left between the elastic clamp (201) and the centering device (3).

4. A tungsten electrode device according to claim 1, characterized in that: The centering device (3) is a prism, and the outer wall edge of the centering device (3) fits with the inner wall of the connecting hole (102).

5. A tungsten electrode device according to claim 4, characterized in that: The corners of the centering device (3) are arc-shaped transitions, and the arc-shaped transition surface of the centering device (3) matches the inner wall of the connecting hole (102).

6. A tungsten electrode device according to claim 5, characterized in that: The centering device (3) is made of ceramic material.

7. A tungsten electrode device according to claim 1, characterized in that: The outer wall of the mounting seat (202) is provided with threads, and the outer wall of the nozzle (1) is provided with threads.

8. A tungsten electrode device according to claim 3, characterized in that: The elastic jacket (2) is made of red copper, and the two elastic clamps (201) and the mounting seat (202) are integrally formed.

9. A tungsten electrode device according to claim 8, characterized in that: The end surface of the mounting seat (202) away from the elastic clamp (201) is also provided with two limiting openings, the limiting openings are arranged opposite to each other, and the limiting openings connect the tungsten electrode hole (203) with the outer side of the mounting seat (202).

10. A tungsten electrode device according to claim 1, characterized in that: The central axes of the mounting hole (101), the connecting hole (102) and the tapered hole (103) coincide with each other.

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