CN211162342U

CN211162342U - Welding protection cover and welding gun

Info

Publication number: CN211162342U
Application number: CN201921875471.1U
Authority: CN
Inventors: 曾刚
Original assignee: Guangdong Wenyang Environmental Technology Co ltd
Current assignee: Guangdong Wenyang Environmental Technology Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-08-04
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses a welding safety cover and welder. The welding protection cover comprises: the outer cover is arranged in a hollow mode and is provided with a closed first end and an open second end; the breathable net is arranged in the outer cover and is close to the second end of the outer cover; the flow distribution plate is arranged in the outer cover and positioned between the breathable net and the first end, the flow distribution plate is connected with the inner wall of the outer cover, and a plurality of flow holes are formed in the flow distribution plate; the connecting shaft penetrates through the first end of the outer cover and is connected with the flow distribution plate, the connecting shaft protrudes out of the first end of the outer cover, a gas cavity is formed in the connecting shaft from the end part protruding out of the outer cover to the inside, a gas hole is formed in the side wall, corresponding to the position between the first end of the outer cover and the flow distribution plate, of the connecting shaft, and the gas hole is communicated with the gas cavity; the welding gun comprises a welding gun body and the welding protection cover arranged on the welding gun body. The utility model discloses a welding safety cover can prevent the welding seam oxidation.

Description

Welding protection cover and welding gun

Technical Field

The utility model relates to the field of welding technique, concretely relates to welding safety cover and welder.

Background

Titanium metal is applied to the fields of aerospace, petrifaction, electric power, seawater desalination and the like due to the outstanding advantages of small density, high strength, low heat conductivity coefficient, strong corrosion resistance and the like. Titanium and titanium alloys are very reactive non-ferrous metals, the shape of which changes with the rise of temperature, and titanium starts to absorb hydrogen at about 250 ℃ to generate TiH 2; absorbing oxygen from 400 ℃ to generate TiO, so that the plasticity of the material is obviously reduced; nitrogen was absorbed from 600 c to form brittle and hard TiN. After the gas is absorbed, the welding quality of the titanium material is directly influenced. Titanium and titanium metal are expensive, and once welding defects occur, repair is not easy to succeed, and a titanium plate may be scrapped, so that waste of raw materials is caused.

The weld needs to be protected during the welding process. In titanium welding operation, often need two people in coordination with the operation, alone carry out the welding in the gap in the front, need handheld pipe to spray argon gas to the weld in addition and protect, the argon gas can appear spraying unevenly spraying the in-process spraying, and the protection effect is not good, and the oxidation phenomenon still can take place on the weld surface, causes the rework rate higher, has reduced welding efficiency.

SUMMERY OF THE UTILITY MODEL

Accordingly, the present invention is directed to a welding protection cover capable of preventing oxidation of a welding seam.

In order to realize the utility model discloses a purpose, the utility model discloses a following technical scheme:

a welding protection shield comprising:

the outer cover is arranged in a hollow mode and is provided with a closed first end and an open second end;

a breathable net mounted within the outer cover and disposed proximate the second end of the outer cover;

the flow distribution plate is arranged in the outer cover and positioned between the breathable net and the first end, the flow distribution plate is connected with the inner wall of the outer cover, and a plurality of flow holes are formed in the flow distribution plate;

the connecting axle, the connecting axle is worn to establish the first end of dustcoat is connected the flow distribution plate, the connecting axle protrusion in the first end of dustcoat, the connecting axle by the protrusion in the gaseous chamber has inwards been seted up to the tip of dustcoat, the connecting axle correspond to the first end of dustcoat with gaseous hole has been seted up on the lateral wall between the flow distribution plate, gaseous hole intercommunication gaseous chamber.

The welding protection cover is characterized in that air is introduced into the outer cover through the small holes in the connecting shaft, and the air is uniformly distributed on a welding seam after passing through the flow distribution plate and the breathable net, so that the air can be uniformly sprayed to all positions reaching the welding seam, the welding seam can be protected by the air in an all-round manner, and the welding seam is prevented from being oxidized; the protective cover and the welding gun are convenient to install and simple in structure.

In some embodiments, the welding protection cover further comprises a cover plate connected to the outer cover to close the first end of the outer cover, and the connecting shaft connects the splitter plate and the cover plate and protrudes from the cover plate.

In some embodiments, the connecting shaft is screwed with the splitter plate and the center of the cover plate.

In some embodiments, the flow holes are distributed in an array on the flow distribution plate.

In some of these embodiments, the gas holes have a diameter of 0.2mm to 0.5 mm.

In some of these embodiments, the flow holes have a diameter greater than the diameter of the gas holes.

In some embodiments, the number of the gas holes is four, and the gas holes are uniformly distributed on the periphery of the connecting shaft.

In some embodiments, the housing is progressively reduced in size from the location corresponding to the diverter plate to the second end.

In some of these embodiments, the housing is a ceramic housing.

The utility model also provides a welding gun, including the welder body, still include the welding safety cover, the welding safety cover passes through the connecting axle connect in the welder body.

Drawings

Fig. 1 is a schematic structural diagram of a welding protection cover according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the outer cover of the welding boot of FIG. 1;

FIG. 3 is a schematic view of a diverter plate of the weld shield of FIG. 1;

fig. 4 is a schematic structural view of a connection shaft of the welding protection cover illustrated in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully below. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Examples

Referring to fig. 1, the present invention provides a welding protection cover 100 for being mounted on a welding gun to protect a welding seam from being oxidized, including a housing 10, a permeable net 20, a splitter plate 30 and a connecting shaft 40, wherein the housing 10 is hollow, the housing has a first end closed and a second end open, the permeable net 20 is mounted in the housing 10 and is disposed near the second end of the housing 10, the splitter plate 30 is mounted in the housing 10 at a position between the permeable net 20 and the first end, the splitter plate 30 is connected to an inner wall of the housing 10, the splitter plate 30 is provided with a plurality of flow holes 31, the connecting shaft 40 penetrates through the first end of the housing 10 and is connected to the splitter plate 30, the splitter plate 40 protrudes from the first end of the housing 10, the connecting shaft 40 protrudes from an end of the housing 10 to be provided with a gas cavity inward, the connecting shaft 40 is provided with a gas hole 41 corresponding to a side wall between the first end of the housing 10 and the splitter plate 30, the gas hole 41 communicates with the gas chamber.

When the welding protection cover 100 is used, the welding protection cover is arranged on a welding gun through the connecting shaft 40, gas enters the outer cover 10 through the gas cavity and the gas holes 41 of the connecting shaft 40, is uniformly sprayed on the flow distribution plate 30, is secondarily distributed on the ventilation net 30 through the flow holes 31 of the flow distribution plate 30, and is sprayed to a welding seam from the ventilation net 30, so that the welding seam is protected, the welding seam can be protected in an all-around manner by the gas, and the welding seam is prevented from being oxidized; the gas is uniformly distributed on the welding seam, so that the quality of the welding seam is stable; the protective cover is conveniently connected with a welding gun through a connecting shaft 10, is convenient to install and has a simple structure.

Referring to fig. 1 and 2, in an embodiment, the housing 10 is cylindrical, that is, the first end and the second end of the housing are open, and the first end of the housing 10 is closed by a cover plate.

In one embodiment, the housing 10 is progressively reduced in size from the location corresponding to the diverter plate 30 to the second end. This is convenient for install flow distribution plate 30, and gaseous effect that has the convergence promotes the welding protection effect.

In one embodiment, the housing 10 is made of a ceramic material. The ceramic material is impact-resistant and high-temperature-resistant and cannot be influenced by welding temperature. Of course, the housing 10 may also be made of metal or the like.

Referring to fig. 1, the welding protection cover 100 further includes a cover plate 50, the cover plate 50 is connected to the housing 10 to close the first end of the housing 10, and the connecting shaft 40 connects the dividing plate 30 and the cover plate 50 and protrudes from the cover plate 50. If the first end of the outer cover 10 is not openable, the diverter plate 30 and the air permeable net 20 cannot be replaced if the second end of the outer cover 10 is smaller in size than the first end. The cover plate 50 is used to seal the outer cover 20, and the inner splitter plate 30 and the air permeable net 20 can be easily replaced by opening the cover plate 50.

In one embodiment, the gas permeable mesh 20 is a copper mesh. The copper mesh can resist high temperature and gas corrosion. Of course, the air-permeable net 20 may be made of other metal materials. After the gas permeable net 20 is installed in the outer cover 10, gas can be uniformly dispersed from the gas permeable net 20 to the surface of the weld.

Referring to fig. 1 and 3, in an embodiment, the flow holes 31 of the flow distribution plate 30 are distributed on the flow distribution plate 30 in an array. So that the gas can be uniformly dispersed through the distributor plate 30. Wherein the diameter of the flow hole 31 is larger than the diameter of the gas hole 41 on the connecting shaft 40. So that the gas is sprayed out from the small holes and then uniformly distributed through the large holes, and the gas is more uniformly dispersed.

Referring to fig. 1 and 4, the connecting shaft 40 is externally threaded or threaded to facilitate connection of the connecting shaft 40 to the manifold 30 and the housing 10. In this embodiment, the connecting shaft 40 has threads on the outside thereof, threaded holes are formed in the centers of the dividing plate 30 and the cover plate 50, and the connecting shaft 40 is threadedly connected to the dividing plate 30 and the cover plate 50.

The number of the gas holes 41 on the connecting shaft 40 is four, and the four gas holes are uniformly distributed on the periphery of the connecting shaft 40. So that the gas can be uniformly sprayed from the connection shaft 40 into the housing 10.

In one embodiment, the gas holes 41 have a diameter of 0.2mm to 0.5 mm. The diameter of the gas hole 41 may vary within the above range as the size of the welding helmet 100 varies.

The welding protection cover 100 is particularly used for welding titanium materials, argon is used for protection, and the argon enters a gas cavity from the connecting shaft 40 and is sprayed out from the gas hole 41.

The utility model also provides a welding gun, it includes welder body and foretell welding safety cover 100, set up threaded hole on the welder body, 40 threaded connection of connecting axle on the welding safety cover 100 in above-mentioned threaded hole to install welding safety cover 100 on the welder body. When the welding gun performs welding, gas is sprayed to the welding seam from the welding protection cover 100, so that the welding seam is protected from being oxidized.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A welding protection shield, comprising:

2. The welding shield of claim 1, further comprising a cover plate coupled to the outer enclosure to enclose the first end of the outer enclosure, the connection shaft connecting the diverter plate to the cover plate and protruding from the cover plate.

3. The welding shield of claim 2, wherein the connecting shaft threadably connects the diverter plate to the center of the cover plate.

4. The welding shield of claim 1, wherein the flow openings are distributed in an array on the manifold.

5. The welding shield of claim 1, wherein said gas holes have a diameter of 0.2mm to 0.5 mm.

6. The welding shield of claim 1 or 5, wherein the flow holes have a diameter greater than the diameter of the gas holes.

7. The welding shield of claim 1 or 5, wherein the number of gas holes is four and is uniformly distributed around the circumference of the connecting shaft.

8. The weld shield of claim 1, wherein the outer shield progressively decreases in size from a location corresponding to the diverter plate to the second end.

9. The welding shield of claim 1, wherein said enclosure is a ceramic enclosure.

10. A welding gun comprising a welding gun body, characterized by further comprising a welding protection cover according to any one of claims 1 to 9, said welding protection cover being connected to said welding gun body through said connection shaft.