CN213289018U

CN213289018U - Argon protection device for repairing and welding castings

Info

Publication number: CN213289018U
Application number: CN202022101538.5U
Authority: CN
Inventors: 丁伟涛
Original assignee: Zhejiang Kaicheng Machinery Co ltd
Current assignee: Zhejiang Kaicheng Machinery Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-05-28
Anticipated expiration: 2030-09-23

Abstract

The utility model belongs to the technical field of the welding technique and specifically relates to an argon protection device is used in foundry goods reprocess repair welding, including welder, the sliding sleeve has been cup jointed on welder's straight position, is fixed with lower extreme open-ended argon gas cover on the sliding sleeve, is provided with a baffle between inside roof of argon gas cover and lateral wall, and two cavitys are separated into with argon gas cover inside to the baffle, and one of them is the confined chamber that admits air, and another is the welding chamber, and the array has the venthole on the baffle, is provided with the muffler at the welding chamber top of keeping away from chamber one end that admits air, and the muffler extends to the intracavity portion that admits air, is provided with the return air machine on the muffler, is provided with the intake pipe on the chamber that admits air. The utility model provides a foundry goods is reprocessed and is welded repair and use argon gas protection device, it can increase argon gas at welding area's velocity of flow and flow under the unchangeable condition basically of argon gas use amount to the influence of impurity such as the air of getting rid of that can be better promotes the welding effect.

Description

Argon protection device for repairing and welding castings

Technical Field

The utility model belongs to the technical field of the welding technique and specifically relates to a foundry goods is reprocessed and is welded repair and use argon protection device.

Background

Among the prior art, to the foundry goods repair welding's in-process argon blowing gas limited to the impurity in the isolated air, because the velocity of flow and the output volume of argon gas need control, unable a large amount of output, so can cause some tiny defects to appear when welding, influence the welding quality, need manual repair welding once more etc. machining efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough of above-mentioned technique and providing a foundry goods is reprocessed and is welded repair and use argon protection device, can increase the argon gas flow in order to promote the welding effect at welding area.

In order to achieve the above object, the utility model relates to an argon protection device for repairing and welding a casting, which comprises a welding gun, wherein the end part of the welding gun is in a straight state and is vertically downward, a sliding sleeve is sleeved on the straight part of the welding gun, an argon cover with an opening at the lower end is fixed on the sliding sleeve, the inside of the sliding sleeve is communicated with the inside of the argon cover, the end part of the welding gun extends into the argon cover, a positioning ring is fixed on the welding gun at the upper end of the sleeve, a spring is sleeved on the welding gun between the fixing ring and the argon cover, the upper end of the spring is fixedly connected with the fixing ring, the lower end of the spring is fixedly connected with the argon cover, a partition plate is arranged between the top wall and the side wall in the argon cover, the partition plate divides the inside of the argon cover into two cavities, one of the two cavities is a closed air inlet cavity, the other is a welding cavity, the air inlet cavity is formed in the partition plate, air outlet holes are arrayed in the partition plate, an air return pipe is arranged at the top of the welding cavity far away from one end of the air inlet cavity, the air return pipe extends to the inside of the air inlet cavity, an air return fan is arranged on the air return pipe, a flow sensor is arranged inside the air return pipe, an air inlet pipe is arranged on the air inlet cavity, and the air inlet pipe is connected with an argon source.

In the technical scheme, in the actual use process, the welding gun is driven by the manipulator to move, when in welding, the welding gun moves downwards, the argon shield is contacted with a workpiece, and the spring is compressed to ensure that the end part of the welding gun is contacted with or close to the workpiece, then an argon gas source fills argon gas into the gas inlet cavity through the gas inlet pipe, and the argon gas is conveyed to the welding cavity through the gas outlet hole, when the welding cavity is filled with argon, the air returning machine is started to return the argon at the top of the welding cavity to the inside of the air inlet cavity, thereby effectively increasing the argon flowing property between the gas inlet cavity and the welding cavity, certainly, part of argon can be lost from the lower part of the argon shield, then supply through the argon gas source, the argon gas velocity of flow in the welded region can effectively be increased to above-mentioned process, ensures that the argon gas is filling the welded region to effectual promotion welding quality reduces the defect and produces, promotes the welding effect. The design of the flow sensor in the air return pipe can sense the air return flow, and the air outlet speed of the air inlet cavity to the welding cavity is controlled by adjusting the air return machine so as to further ensure the welding performance.

Be provided with the shrinkage pool of indent on the lateral wall of the lower extreme opening part of argon gas cover, the opening part diameter of shrinkage pool lower extreme is less than the inside diameter of shrinkage pool, is provided with the steel ball in the inside of shrinkage pool, and the lower extreme of steel ball exposes in the shrinkage pool outside, and the diameter of steel ball is greater than the diameter of shrinkage pool opening part, is less than the inside diameter of shrinkage pool. The design of this structure can realize when welder removes among the welding process, is rolling friction between argon gas cover and the work piece, and its frictional force is little, so welding process is more smooth and easy, and welding stability is high.

The utility model provides a foundry goods is reprocessed and is welded repair and use argon gas protection device, it can increase argon gas at welding area's velocity of flow and flow under the unchangeable condition basically of argon gas use amount to the influence of impurity such as the air of getting rid of that can be better promotes the welding effect.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a partially enlarged schematic view of fig. 1.

Detailed Description

The invention is further described by the following embodiments in conjunction with the accompanying drawings.

Example 1:

as shown in fig. 1, the argon protection device for casting repair welding described in this embodiment includes a welding gun 1, the end of the welding gun 1 is straight and vertically downward, a sliding sleeve 4 is sleeved on the straight portion of the welding gun 1, an argon gas hood 2 with an opening at the lower end is fixed on the sliding sleeve 4, the inside of the sliding sleeve 4 is communicated with the inside of the argon gas hood 2, the end of the welding gun 1 extends into the argon gas hood 2, a fixing ring 5 is fixed on the welding gun 1 at the upper end of the sleeve, a spring 6 is sleeved on the welding gun 1 between the fixing ring 5 and the argon gas hood 2, the upper end of the spring 6 is fixedly connected with the fixing ring 5, the lower end of the spring 6 is fixedly connected with the argon gas hood 2, a partition plate 3 is arranged between the top wall and the side wall inside the argon gas hood 2, the partition plate 3 divides the inside of the argon gas hood 2 into two cavities, one of which is a closed gas inlet, the opening of argon gas cover 2 is located welding chamber 8, welder 1 is located welding chamber 8, and the array has venthole 16 on baffle 3, is provided with muffler 9 at the welding chamber 8 top of keeping away from air inlet chamber 7 one end, and muffler 9 extends to air inlet chamber 7 inside, is provided with return air machine 10 on muffler 9, is provided with flow sensor 11 in muffler 9 inside, is provided with intake pipe 12 on air inlet chamber 7, intake pipe 12 is connected with argon gas source 13.

As shown in fig. 2, an inwardly concave hole 15 is formed in a side wall of an opening at the lower end of the argon gas hood 2, the diameter of the opening at the lower end of the concave hole 15 is smaller than the diameter of the inside of the concave hole 15, a steel ball 14 is arranged inside the concave hole 15, the lower end of the steel ball 14 is exposed outside the concave hole 15, and the diameter of the steel ball 14 is larger than the diameter of the opening of the concave hole 15 and smaller than the diameter of the inside of the concave hole.

Claims

1. The utility model provides a foundry goods is reprocessed and is welded repair and use argon protection device, includes welder, welder's tip is straight state and vertical downwards, characterized by: the welding gun comprises a welding gun, a sliding sleeve is sleeved on a straight part of the welding gun, an argon cover with an opening at the lower end is fixed on the sliding sleeve, the interior of the sliding sleeve is communicated with the interior of the argon cover, the end part of the welding gun extends into the interior of the argon cover, a positioning ring is fixed on the welding gun at the upper end of the sleeve, a spring is sleeved on the welding gun between a fixing ring and the argon cover, the upper end of the spring is fixedly connected with the fixing ring, the lower end of the spring is fixedly connected with the argon cover, a partition plate is arranged between the top wall and the side wall in the interior of the argon cover and divides the interior of the argon cover into two cavities, one of the two cavities is a closed air inlet cavity, the other is a welding cavity, the opening of the argon cover is positioned in the welding cavity, the welding gun is positioned in the welding cavity, air outlet holes are arrayed on the partition plate, an air return pipe is, the flow sensor is arranged in the gas return pipe, the gas inlet pipe is arranged on the gas inlet cavity, and the gas inlet pipe is connected with an argon source.

2. The argon protection device for casting repair welding according to claim 1, wherein the argon protection device comprises: be provided with the shrinkage pool of indent on the lateral wall of the lower extreme opening part of argon gas cover, the opening part diameter of shrinkage pool lower extreme is less than the inside diameter of shrinkage pool, is provided with the steel ball in the inside of shrinkage pool, and the lower extreme of steel ball exposes in the shrinkage pool outside, and the diameter of steel ball is greater than the diameter of shrinkage pool opening part, is less than the inside diameter of shrinkage pool.