CN211387301U - Flexible welder of variable angle - Google Patents

Abstract

The utility model relates to a variable-angle flexible welding torch, which comprises a nozzle assembly, a flexible elbow, a handle assembly, a cable assembly and a main body that are connected in sequence. The main assembly is connected to a welding machine, and the flexible bending The tube is a helical tubular structure formed by winding metal wires. The utility model can not only arbitrarily change the angle of the welding torch according to the actual working conditions, but also keep the adjusted angle unchanged, and can greatly improve the problems of poor accessibility or inaccessibility of the operator during the production and maintenance of welded structural products. , reduces the difficulty of construction, improves the welding efficiency, and also helps to improve the welding quality.

Description

A variable-angle flexible welding torch

technical field

The utility model belongs to the technical field of welding equipment, in particular to a variable-angle flexible welding torch.

Background technique

MIG welding technology is widely used in the production of aluminum alloy rail vehicles. The existing welding equipment is equipped with a fixed angle of the welding torch gooseneck. The welding torch gooseneck is a rigid structure, and its bending angle cannot be Adjustment, this structure brings a lot of inconvenience in the process of use. For example, when encountering a welding structure with limited space, because the bending angle of the welding torch gooseneck is fixed, the operator cannot adjust the bending angle according to the actual working conditions. Contrary to the surrounding parts, the welding accessibility during welding is poor, which is inconvenient for welding operations, or even impossible to implement.

In the patent No. 201220235117.4, a flexible elbow of MIG welding torch is provided, which is connected between the front joint and the rear joint of the welding torch by a bendable silicone connecting tube. The silicone connecting tube is a flexible elbow, which can be adjusted according to the actual The angle of operation needs to adjust the shape of the silicone connecting tube. Although this solution solves the problem of adjusting the angle of the welding torch, since the silicone connecting tube only has good flexibility and does not have a certain rigidity, after the angle is adjusted in place, the welding angle cannot be kept unchanged, and there are still many inconveniences during use.

Utility model content

The main technical problem to be solved by the utility model is to provide a variable-angle flexible welding torch which can arbitrarily change the welding torch angle according to the actual working conditions, keep the angle unchanged, and improve the welding accessibility and welding quality.

To achieve the above object, the technical scheme of the present utility model is:

A variable-angle flexible welding torch, comprising a nozzle assembly, a flexible elbow, a handle assembly and a cable assembly connected in sequence, the tail end of the cable assembly is connected to a welding machine, and the flexible elbow is A helical tubular structure formed by winding metal wires, the nozzle assembly, the flexible elbow, the handle assembly and the cable assembly are all connected by threads, and the cable assembly includes a main body, a cable tube and a first cable assembly. A pipeline fixing seat, the first pipeline fixing seat has a plurality of openings for passing through the pipeline, and the rear end of the main body and the first pipeline fixing seat are locked by a first fixing nut Fixed connection, the front end of the main body is fixedly connected with the cable tube.

Further, the metal wire is copper wire.

Further, the metal wire is a thick copper wire with a diameter of 1.5 mm or more.

Further, a layer of rubber tube is sheathed on the outer side of the flexible elbow.

Further, a buffer protection sleeve is respectively sleeved on the front end and the rear end of the cable tube.

Further, the buffer protection sleeve is a bellows with an embedded spring.

Further, the handle assembly includes a connecting body, a handle and a welding torch switch, the connecting body has a plurality of openings for passing through pipelines, the handle is sleeved on the outside of the connecting body, and the welding torch switch is Installed on the handle, the connecting body is locked and fixedly connected with the flexible elbow through the second fixing nut, and the tail end of the handle is locked and fixedly connected with the cable assembly through the third fixing nut.

Further, the nozzle assembly includes a nozzle, a contact tip and an insulating ring, the insulating ring is fixed between the contact tip and the nozzle, the contact tip and the flexible elbow are threadedly connected, and the insulating ring is connected to the contact tip. The space between the nozzle and the insulating ring is clamped and fixedly connected by means of interference fit or fixedly connected by means of threads.

To sum up, the variable-angle flexible welding torch provided by the present invention has the following advantages compared with the prior art:

(1) The flexible elbow of the present invention can not only change the angle of the welding torch arbitrarily according to the actual working conditions, but also keep the adjusted angle unchanged, which can greatly improve the welding of the operator during the production and maintenance of welded structural products. The problems of poor accessibility or inaccessibility reduce the difficulty of construction, improve the welding efficiency, and also help to improve the welding quality.

(2) In the utility model, each section is connected by threads, which not only has good stability, but also facilitates disassembly.

Description of drawings

FIG. 1 is a schematic structural diagram of the present utility model.

As shown in Figure 1, the nozzle assembly 1, the flexible elbow 2, the handle assembly 3, the cable assembly 4, the welding wire 5, the water circulation pipeline 6, the gas pipe 7, the cable 8, the main body 9, the cable tube 10, the first A pipeline fixing seat 11, a first fixing nut 12, a pipeline fixing seat 13, a pipeline fixing seat 14, a buffer protective cover 15, a second fixing nut 16, a connecting body 17, a handle 18, a welding torch switch 19, a third fixing Nut 20, nozzle 21, contact tip 22, insulating ring 23.

Detailed ways

Below in conjunction with the accompanying drawings and specific embodiments, the present utility model is described in further detail:

As shown in FIG. 1, a variable-angle flexible welding torch provided by the present invention includes a nozzle assembly 1, a flexible elbow 2, a handle assembly 3 and a cable assembly 4, which are connected in sequence. The tail end is connected with a welding machine (not shown in the figure). A number of pipelines are connected through the nozzle assembly 1 , the flexible elbow 2 , the handle assembly 3 , and the cable assembly 4 , including the welding wire 5 , the water circulation pipeline 6 , the gas pipe 7 and the cable 8 . In the following description, the tail end refers to the end facing the welding machine, and the front end refers to the end facing the nozzle assembly 1.

In this embodiment, the length of the flexible elbow 2 is about 190mm, and it adopts a spiral tubular structure formed by winding metal wires. The spiral is wound without gaps to form a tubular structure, and the welding wire 5 , the water circulation pipeline 6 , the gas pipe 7 and the cable 8 are uniformly passed through the flexible elbow 2 . The flexible elbow 2 not only has a certain degree of flexibility, the bending angle can be adjusted arbitrarily according to the actual working conditions, thereby changing the angle of the welding torch, but also has a certain rigidity, which can keep the adjusted angle unchanged during operation, and can also carry a large current . In the process of production and maintenance of welded structural products, it can greatly improve the poor accessibility or inaccessibility of welding operators, reduce construction difficulty, improve welding efficiency, and help improve welding quality.

The welding wire 5, the water circulation pipeline 6, the gas pipe 7 and the cable 8 in the flexible elbow 2 are all covered with a layer of insulating sheath, which is resistant to corrosion by grease and solvent, and has a flame retardant effect. The outer side of the copper wire tube of the flexible elbow 2 is also wrapped with a layer of rubber tube (not marked in the figure) to protect the copper wire tube inside.

As shown in FIG. 1 , the cable assembly 4 includes a main body 9 , a cable tube 10 and a first pipeline fixing seat 11 , and the first pipeline fixing seat 11 has a plurality of openings for passing through the pipeline, each Correspondingly, the pipelines are installed through the openings, and each pipeline passes through the main body 9 and the cable tube 10 . The tail end of the main body 9 is connected to the welding machine, and the tail end of the main body 9 and the first pipeline fixing seat 11 are locked and fixedly connected by the first fixing nut 12, which is convenient for the main body 9, the first pipeline fixing seat 11 and each pipeline. disassembly between. The front end of the main body 9 and the cable tube 10 can be fixedly connected by wrapping and pasting with tape, or can be fixedly connected by a fixing nut. The pipelines in the main body 9 and the pipelines in the cable tube 10 are arranged in sections, and are fixedly connected by pipe joints, which is convenient for disassembly and assembly. The welding wire 5 passes through the main body 9, the cable tube 10, Handle assembly 3, flexible elbow 2 and nozzle assembly 1.

The length of the cable tube 10 varies according to different welding machines, and is generally about 3 meters. The cable tube 10 is wrapped with a layer of insulating rubber tube outside the pipeline to protect the pipeline inside. A pipeline fixing seat 13 and 14 are respectively installed at the front end and the rear end of the cable tube 10 , and the pipeline fixing seats 13 and 14 are provided with a plurality of openings for passing through the pipeline. The pipeline fixing seat 13 at the tail end of the cable tube 10 and the front end of the main body 9 are bound and fixedly connected by a fixing nut or tape, and then the main body 9 and the cable tube 10 are fixedly connected together. The pipeline fixing seat 14 at the front end of the cable tube 10 and the rear end of the handle assembly 3 are fixedly connected by a third fixing nut 20, and then the cable assembly 4 and the handle assembly 3 are fixedly connected together. The cable tube 10 The pipelines inside and the pipelines installed in the handle assembly 3 are arranged in sections, and are connected by pipe joints to facilitate disassembly and assembly.

In order to ensure that the cable tube 10 is not excessively bent at the connection and damages the cable during use, in this embodiment, a buffer protective sleeve 15 is sleeved on both the rear end and the front end of the cable tube 10. The buffer protective sleeve 15 The use of corrugated plastic tubes with embedded springs ensures a certain degree of flexibility and rigidity at the same time, which plays a role in buffering and protection.

The handle assembly 3 includes a connecting body 17, a handle 18 and a welding torch switch 19. The connecting body 17 has the same function as the pipeline holder, and has a plurality of openings for the pipeline to pass through. Thread, the handle 18 is sleeved on the outside of the connecting body 17 and the pipeline, the welding torch switch 19 is installed on the handle 18, the rear end of the handle 18 has an external thread, and the handle 18 is connected to the pipeline at the front end of the cable assembly 4 through the third fixing nut 20 The fixing base 14 is fixedly connected, thereby connecting the handle assembly 3 and the cable assembly 2 together. The connecting body 17 is fixedly connected with the tail end of the flexible elbow 2 through the second fixing nut 16, and then the handle assembly 3 is connected with the flexible elbow 2 for easy disassembly.

In order to facilitate the disassembly and assembly of the handle 18 , the handle 18 preferably adopts a split structure, and the two split parts have the connecting body 17 installed therein and are fixedly connected together with a plurality of screws to form a complete handle 18 .

The nozzle assembly 1 includes a nozzle 21, a contact tip 22 and an insulating ring 23. The contact tip 22 is composed of a contact tip body and a contact tip seat. The contact tip body and the contact tip seat are welded into an integrated structure. With external thread, the contact tip 22 is connected with the front end of the flexible elbow 2 by screw thread, the welding wire (not shown in the figure) passes through the contact tip 22 from the center, and the cable is connected with the contact tip 22 . The insulating ring 23 is made of high temperature resistant material. The insulating ring 23 is fixed between the contact tip 22 and the nozzle 21. The insulating ring 23 and the contact tip 22 are clamped to the outside of the contact tip 22 by interference fit, or are connected by screws. . The nozzles 21 are interchangeable, and the nozzles 21 are clamped on the outside of the insulating ring 23 by means of interference fit, or are connected with the insulating ring 23 by screws. There is a gap between the nozzle 21 and the contact nozzle 22 , and the protective gas in the gas pipe 7 flows out from the air hole on the contact nozzle 22 into the gap, and then sprays out through the front end of the nozzle 21 . The nozzle 21 is designed with a length of 43.5mm, and the contact tip 22 is designed to be M8*30. The overall size is smaller than that of the common parts, which is convenient for flexible swinging in a narrow space, and 0.8-1.6mm welding wire can be used.

As described above, similar technical solutions can be derived in conjunction with the solution content given in the accompanying drawings. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention still fall within the scope of the technical solutions of the present invention.

Claims (8)

1. A variable-angle flexible welding torch, comprising a nozzle assembly, a flexible elbow, a handle assembly and a cable assembly connected in sequence, and the tail end of the cable assembly is connected to a welding machine, characterized in that: The flexible elbow is a spiral tubular structure formed by winding metal wires. The nozzle assembly, the flexible elbow, the handle assembly and the cable assembly are all connected by threads. The cable assembly includes a main body. , a cable tube and a first pipeline fixing seat, the first pipeline fixing seat has a plurality of openings for passing through the pipeline, and the tail end of the main body and the first pipeline fixing seat pass through The first fixing nut is locked and fixedly connected, and the front end of the main body is fixedly connected with the cable tube. 2 . The variable-angle flexible welding torch according to claim 1 , wherein the metal wire is a copper wire. 3 . 3 . The variable-angle flexible welding torch according to claim 2 , wherein the metal wire is a thick copper wire with a diameter of 1.5 mm or more. 4 . 4 . The variable-angle flexible welding torch according to claim 1 , wherein a layer of rubber tube is sheathed on the outer side of the flexible elbow. 5 . 5 . The variable-angle flexible welding torch according to claim 1 , wherein a buffer protection sleeve is respectively sleeved on the front end and the rear end of the cable tube. 6 . 6 . The variable-angle flexible welding torch according to claim 5 , wherein the buffer protective sleeve is a bellows with an embedded spring. 7 . 7. A variable-angle flexible welding torch according to claim 1, wherein the handle assembly comprises a connecting body, a handle and a welding torch switch, and the connecting body has a plurality of A hole is opened, the handle is sleeved on the outside of the connecting body, the welding torch switch is installed on the handle, the connecting body is locked and fixedly connected with the flexible elbow through a second fixing nut, and the tail end of the handle is connected by a second fixing nut. The three fixing nuts are locked and fixedly connected with the cable assembly. 8 . The variable-angle flexible welding torch according to claim 1 , wherein the nozzle assembly comprises a nozzle, a contact tip and an insulating ring, the insulating ring is fixed between the contact tip and the nozzle, and the The contact tip and the flexible elbow are connected by screw threads, and the insulating ring and the contact tip and between the nozzle and the insulating ring are clamped and fixedly connected by means of interference fit or fixedly connected by means of threads.

Images