Novel contact tube

Abstract

The utility model belongs to the technical field of welding, and discloses a novel contact tube, which comprises a contact tube body, a welding wire crimping part and at least one welding wire channel communicated with two ends in the contact tube body. The side wall, close to the wire outlet end of the contact tube body, of the contact tube body is provided with a compression joint hole communicated with the welding wire channel, one end of the welding wire compression joint part is positioned on the side wall face, close to the wire inlet end of the contact tube body, of the contact tube body, and the other end of the welding wire compression joint part is a compression joint end capable of being in elastic compression joint with a welding wire. Abrasion to the interior of the contact tube is reduced when a welding wire smoothly passes through a welding wire channel, meanwhile, the conductivity is improved, the service life of the contact tube is prolonged, electric arc splashing is reduced, and appearance welding forming is good.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, and more particularly to a novel conductive nozzle. Background Art

[0002] At present, the conductive nozzle plays a core role in modern welding technology, especially in welding applications such as gas metal arc welding, submerged arc welding, and flux-cored arc welding. The conductive nozzle is used to transmit current and gas, which has a direct impact on welding quality and production efficiency.

[0003] In order to allow the welding wire to pass smoothly through the inner hole of the welding nozzle, the inner hole diameter of the conductive nozzle must be processed to be larger than the diameter of the welding wire. This will cause the following problems: First, the welding wire will produce irregular shaking when it is output, especially when the inner hole is worn out, the shaking amplitude will be larger, which increases the difficulty for the operator to control the accuracy of wire feeding, affecting the welding formation and weld quality; second, the welding wire and the inner hole of the conductive nozzle are in loose contact, and poor contact sometimes causes the new conductive nozzle to burn out as soon as the arc is just started, which is very regrettable and wasteful; third, poor contact causes unstable current and affects the welding quality; fourth, since the inner hole of the conductive nozzle itself is larger than the diameter of the welding wire, it cannot provide a certain amount of material for its wear, and it itself cannot have a long life; in addition, poor contact also causes the welding wire and the inner hole to generate electric sparks and ablation or melt accumulation (this phenomenon mainly occurs within the range of about seven millimeters of the conductive nozzle head). Once it occurs, the poor conductivity phenomenon will be further aggravated or cause blockage, seriously affecting the life of the conductive nozzle.

[0004] Therefore, how to provide a conductive nozzle with good conductive performance, long service life, reduced arc spatter, and good appearance and welding shape is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the utility model provides a conductive nozzle with a crimping hole and a welding wire crimping part placed in the crimping hole, so as to reduce the wear on the inside of the conductive nozzle when the welding wire passes through the welding wire channel smoothly, while improving the conductive performance, extending the service life of the conductive nozzle, reducing arc flying, and having a good appearance of welding.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A new conductive nozzle, comprising:

[0008] A conductive tip body, and at least one welding wire passage extending through both ends of the conductive tip body;

[0009] The welding wire crimping part is provided with a crimping hole connected to the welding wire channel on one side wall of the conductive nozzle body close to its wire outlet end. One end of the welding wire crimping part is positioned on the side wall of the conductive nozzle body close to its wire input end, and the other end is a crimping end that can be elastically crimped with the welding wire.

[0010] Through the above technical solution, the utility model discloses a new conductive nozzle, which is provided with a crimping hole connected to the welding wire channel on one side wall of the conductive nozzle body, and a welding wire crimping part is placed in the crimping hole. When the welding wire passes through the welding wire channel, the welding wire contacts and collides with the welding wire channel. Because an elastic and movable welding wire crimping part is provided in the welding wire channel, the elastic force of the welding wire channel wall is improved, so that the welding wire channel wall can better clamp and transport the welding wire. In this way, even in the process of the welding wire wearing the conductive block, it can maintain good contact with the welding wire, thereby reducing the wear rate and extending the life of the conductive nozzle. In addition, the use of the welding wire crimping part ensures that the conductive nozzle body and the welding wire are always in contact. Even if the temperature of the conductive nozzle body rises during welding, due to the high softening temperature characteristics of the material, the welding wire crimping part can still maintain good elasticity, maintain the clamping force on the welding wire, ensure that the conductive performance will not decay, and improve the stability of welding wire transportation, which can reduce arc spatter during welding, and thus reduce the formation of slag inclusion pores, so that the appearance of the welding is well formed.

[0011] Furthermore, the welding wire crimping portion includes an elastic crimping rod, one end of which is fixed to a side wall of the conductive tip body close to its wire entry end, and the other end of which passes through a crimping hole to be elastically crimped with the welding wire.

[0012] Furthermore, the welding wire crimping part also includes a crimping rod, and the crimping hole is a strip hole, and its length direction is arranged parallel to and passes through the welding wire channel; the strip hole is close to the hole wall of the wire entry end and an assembly groove is opened along the radial direction of the welding wire channel, and the assembly groove passes through the side wall of the conductive nozzle body along the axial direction of the strip hole; the crimping rod is arranged along the direction of the welding wire channel, and its assembly end is positioned in the assembly groove, and the crimping end extends along the strip hole and can be crimped with the welding wire; the other end of the elastic crimping rod is elastically crimped with the upper end face of the crimping end of the crimping rod.

[0013] The beneficial effects of adopting the above technical solution are: improving the stability of the crimping rod installation, helping to stabilize the feeding of the welding wire, reducing the arc instability caused by the swing of the welding wire, and improving the welding quality; at the same time, it can also protect the conductive nozzle body and the crimping rod from the direct impact of the welding wire or spatter, reduce wear and extend the service life of the conductive nozzle.

[0014] Furthermore, the outer surface of the conductive nozzle body corresponding to the wire entry end thereof is a flat surface, the fixed end of the elastic pressing rod is connected to a positioning plate, and the positioning plate is fixed to the flat surface by bolts.

[0015] The beneficial effects of adopting the above technical solution are: the bolt connection method makes the installation and removal of the conductive nozzle body and the positioning plate simple and quick, and facilitates maintenance and replacement; and allows multiple repeated connections, reducing the damage rate and improving the durability of the product.

[0016] Furthermore, the crimping rod is a T-shaped rod, both ends of the horizontal rod of the T-shaped rod are positioned in the assembly groove, and the other end of the vertical rod can be crimped with the welding wire.

[0017] The beneficial effects of adopting the above technical solution are: the T-shaped design provides better structural stability and supporting force, the cross bar in the T-shaped structure plays a supporting role, and its two ends are directly assembled in the assembly groove to prevent the crimping rod from entering the welding wire channel as a whole. At the same time, the end of the vertical rod is slightly rotated to the welding wire channel with the cross bar as the axis to contact the welding wire.

[0018] Furthermore, the depth of the assembly groove along the axial direction of the strip hole is greater than or equal to the length of the outer end of the strip hole from the welding wire channel.

[0019] The beneficial effect of adopting the above technical solution is that the increase in the depth of the assembly groove can ensure that the welding wire is more stable during the assembly process, reduce the deviation or instability of the welding wire caused by the shallow groove, and thus improve the accuracy of the overall assembly.

[0020] Furthermore, the wire outlet end of the conductive tip body is arranged in a stepped shape along the radial direction of the welding wire channel.

[0021] The beneficial effect of adopting the above technical solution is: a stepped wire outlet is formed at the wire outlet end of the conductive nozzle body. The stepped design reduces the possibility of spatter entering the interior of the conductive nozzle body, and also reduces the problem of wire outlet clogging, thereby reducing the work of cleaning spatter and maintaining the conductive nozzle.

[0022] Furthermore, the conductive nozzle body also includes an integrally connected middle connecting section and a tail connecting section, the tail connecting section is provided with a threaded connection portion, the middle connecting section is fixed to the conductive nozzle body near its wire entry end; the middle connecting section and the tail connecting section are provided with a wire entry channel connected to the welding wire channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1This is a schematic diagram of the overall three-dimensional structure of the conductive nozzle provided by the utility model.

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the conductive nozzle body provided by the utility model.

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the buffer plate provided by the utility model.

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the buffer rod provided by the utility model.

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of another connection form of the conductive nozzle provided by the utility model.

[0029] Among them, 1-conductive nozzle body, 11-welding wire channel, 12-flat surface, 13-middle connecting section, 14-tail connecting section, 2-welding wire crimping part, 21-crimping hole, 211-assembly groove, 22-elastic crimping rod, 221-positioning plate, 23-crimping rod, 231-cross bar, 232-vertical rod, 3-welding wire, 4-bolt, 5-clamping sleeve, 51-elliptical sleeve, 52-elastic crimping plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The embodiment of the utility model discloses a novel conductive nozzle, comprising a conductive nozzle body 1 and a welding wire crimping portion 2, at least one welding wire channel 11 extending through both ends of the conductive nozzle body 1; a side wall of the conductive nozzle body 1 near its wire outlet end is provided with a crimping hole 21 connected to the welding wire channel 11; one end of the welding wire crimping portion 2 is positioned on a side wall of the conductive nozzle body 1 near its wire input end, and the other end is a crimping end capable of elastically crimping with the welding wire 3.

[0032] In one embodiment of the welding wire crimping portion 2 of the present invention, the welding wire crimping portion 2 includes an elastic crimping rod 22, one end of the elastic crimping rod 22 is fixed to a side wall of the conductive tip body 1 close to its wire entry end, and the other end of the elastic crimping rod 22 passes through the crimping hole 21 and is elastically crimped with the welding wire 3.

[0033] In the above embodiment, the wire crimping portion 2 also includes a crimping rod 23, and the crimping hole 21 is a strip-shaped hole, the length direction of which is arranged parallel to and passes through the wire channel 11; an assembly groove 211 is provided on the hole wall of the strip hole near the wire entry end and along the radial direction of the wire channel 11, and the assembly groove 211 passes through the side wall of the conductive nozzle body 1 along the axial direction of the strip hole; the crimping rod 23 is arranged along the direction of the wire channel 11, and its assembly end is positioned in the assembly groove 211, and the crimping end extends along the strip hole and can be crimped with the welding wire 3; the other end of the elastic crimping rod 22 is elastically crimped with the upper end face of the crimping end of the crimping rod 23.

[0034] It can improve the installation stability of the crimping rod 23, help stabilize the feeding of the welding wire 3, reduce the arc instability caused by the swing of the welding wire 3, and improve the welding quality; at the same time, it can also protect the conductive nozzle body 1 and the crimping rod 23 from the direct impact of the welding wire 3 or splashes, reduce wear and extend the service life of the conductive nozzle.

[0035] In another embodiment of the present invention, the outer surface of the conductive tip body 1 corresponding to the thread entry end thereof is formed into a flat surface 12. The fixed end of the elastic crimping rod 22 is connected to a positioning plate 221, which is fixed to the flat surface 12 by bolts 4. The bolt connection 4 makes the installation and removal of the conductive tip body 1 and the positioning plate 221 simple and quick, facilitating maintenance and replacement; it also allows for repeated connection, reducing the damage rate and improving the durability of the product.

[0036] In one embodiment of the crimping rod 23 of the present invention, the crimping rod 23 is a T-shaped rod. The ends of the crossbar 231 of the T-shaped rod are positioned within the assembly slot 211, and the other ends of the vertical rod 232 are capable of crimping the welding wire. The T-shaped design provides better structural stability and support. The crossbar of the T-shaped structure plays a supporting role, and its ends are directly assembled into the assembly slot 211, preventing the crimping rod 23 from entering the welding wire channel 11 in its entirety. At the same time, the end of the vertical rod 232 rotates slightly around the crossbar 231 to the welding wire channel 11, making contact with the welding wire 3.

[0037] In the above embodiment, the depth of the assembly groove 211 along the axial direction of the strip hole is greater than or equal to the distance between the outer end of the strip hole and the welding wire channel 11. The increased depth of the assembly groove 211 ensures that the welding wire 3 is more stable during the assembly process, reduces the deviation or instability of the welding wire 3 caused by the shallow groove, and thus improves the overall assembly accuracy.

[0038] In the above embodiment, the strip hole is open on one side wall away from the assembly groove 211 and the length of the crimping rod 23 is less than the horizontal length of the strip hole, which can avoid direct contact between it and the welding wire 3, and can effectively manage the contact and wear between the conductive nozzle and the welding wire 3, reduce the wear of the conductive nozzle, and extend its service life.

[0039] In one embodiment of the contact tip body 1 of the present invention, the wire outlet end of the contact tip body 1 is arranged in a stepped shape along the radial direction of the wire channel 11. The stepped wire outlet at the wire outlet end of the contact tip body 1 reduces the possibility of spatter entering the interior of the contact tip body 1 and also reduces the problem of wire outlet clogging, thereby reducing the work of cleaning spatter and maintaining the contact tip.

[0040] In another embodiment of the conductive tip body 1 of the present invention, the conductive tip body 1 further includes an integrally connected intermediate connecting section 13 and a tail connecting section 14, the tail connecting section 14 being provided with a threaded connection portion, the intermediate connecting section 13 being fixed to the conductive tip body 1 near its wire entry end; the intermediate connecting section 13 and the tail connecting section 14 being provided with a wire entry channel connected to the welding wire channel 11.

[0041] Another embodiment of the present invention further includes a snap-fit ​​sleeve 5, which includes an elliptical sleeve 51 and an elastic crimping plate 52, which are integrally formed and fixed. The elliptical sleeve 51 can be sleeved on the outside of the conductive tip body 1 and arranged near the middle connecting section 13. The elastic crimping plate 52 abuts against the upper surface of the crimping rod 23, performing the same elastic crimping function as the elastic crimping rod 22 and serving as a replacement structure for the elastic crimping rod 22. Furthermore, an anti-slip plate is fixedly connected to one side of the snap-fit ​​sleeve, which can be tilted toward the conductive tip body 1 to rub against the outer surface of the conductive tip body 1, thereby preventing the snap-fit ​​sleeve 5 from moving on the conductive tip body 1. The snap-fit ​​sleeve 5 does not need to be connected to the conductive tip body 1 with screws, making it easier to replace, with a simple structure and convenient operation.

[0042] The working principle of the conductive nozzle of the utility model is as follows:

[0043] A crimping hole and an assembly groove connected to the welding wire channel are opened on one side wall of the conductive nozzle body, and an integrally formed T-shaped crimping rod is placed in the crimping hole and the assembly groove, and an elastic crimping rod is fixed on the flat surface of the conductive nozzle body. When the welding wire passes through the welding wire channel, the welding wire contacts and collides with the welding wire channel. Since an elastic and movable crimping rod is arranged outside the welding wire channel to contact the welding wire, and the elastic crimping rod contacts the crimping rod to increase its elasticity, the elastic force of the welding wire channel wall is improved, so that the welding wire channel wall can better clamp and convey the welding wire, so that even if the welding wire is worn, the welding wire can be prevented from being damaged. In the process of wearing the conductive block, it can also maintain good contact with the welding wire, thereby reducing the wear rate and extending the life of the conductive tip. In addition, the use of the wire crimping part ensures that the conductive tip body and the welding wire are always in contact. Even if the temperature of the conductive tip body rises during welding, due to the high softening temperature characteristics of the material, the wire crimping part can still maintain good elasticity and maintain the clamping force on the welding wire, ensuring that the conductive performance will not decay, and improving the stability of the welding wire feeding, which can reduce arc spatter during welding, thereby reducing the formation of slag inclusion pores and making the weld appearance better.

[0044] Therefore, the conductive nozzle has a crimping hole and a crimping rod on one side wall thereof, so that the crimping rod and the welding wire can maintain continuous contact when the welding wire is conveyed, thereby improving the conductive performance and extending the service life of the conductive nozzle.

[0045] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0046] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new conductive nozzle, characterized in that: include: A conductive tip body (1), and at least one welding wire channel (11) extending through both ends of the conductive tip body (1); A welding wire crimping portion (2) is provided with a crimping hole (21) communicating with the welding wire channel (11) on a side wall of the conductive nozzle body (1) close to the wire outlet end thereof; one end of the welding wire crimping portion (2) is positioned on a side wall of the conductive nozzle body (1) close to the wire inlet end thereof; and the other end is a crimping end capable of elastically crimping with the welding wire (3).

2. A novel conductive nozzle according to claim 1, characterized in that: The welding wire crimping portion (2) comprises an elastic crimping rod (22), one end of which is fixed to a side wall of the conductive nozzle body (1) close to the wire entry end thereof, and the other end of which passes through the crimping hole (21) to be elastically crimped with the welding wire (3).

3. A novel conductive tip according to claim 2, characterized in that: The welding wire crimping portion (2) further comprises a crimping rod (23), the crimping hole (21) being a strip hole, the length direction of which is arranged parallel to and through the welding wire channel (11); an assembly groove (211) is provided on the hole wall of the strip hole close to the wire entry end and along the radial direction of the welding wire channel (11), and the assembly groove (211) passes through the side wall of the conductive nozzle body (1) along the axial direction of the strip hole; the crimping rod (23) is arranged along the direction of the welding wire channel (11), and its assembly end is positioned in the assembly groove (211), and the crimping end extends along the strip hole and can be crimped with the welding wire (3); the other end of the elastic crimping rod (22) is elastically crimped with the upper end face of the crimping end of the crimping rod (23).

4. A novel conductive tip according to claim 3, characterized in that: The outside of the conductive nozzle body (1) corresponding to the wire entry end thereof is a flat surface (12); the fixed end of the elastic pressing rod (22) is connected to a positioning plate (221); and the positioning plate (221) is fixed to the flat surface (12) by a bolt (4).

5. A novel conductive tip according to claim 3, characterized in that: The crimping rod (23) is a T-shaped rod, the two ends of the horizontal rod (231) of the T-shaped rod are positioned in the assembly groove (211), and the other end of the vertical rod (232) can be crimped with the welding wire.

6. A novel conductive tip according to claim 3, characterized in that: The depth of the assembly groove (211) along the axial direction of the strip hole is greater than or equal to the length of the outer end of the strip hole from the welding wire channel (11).

7. A novel conductive tip according to any one of claims 1 to 6, characterized in that: The wire outlet end of the conductive nozzle body (1) is arranged in a step shape along the radial direction of the welding wire channel (11).

8. A novel conductive tip according to any one of claims 1 to 6, characterized in that: The conductive tip body (1) further comprises an integrally connected middle connecting section (13) and a tail connecting section (14); the tail connecting section (14) is provided with a threaded connection portion; the middle connecting section (13) is fixed to the conductive tip body (1) near its wire entry end; the middle connecting section (13) and the tail connecting section (14) are provided with a wire entry channel communicating with the welding wire channel (11).

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