CN220480521U - Plasma cutting gun head structure - Google Patents

Abstract

The utility model discloses a plasma cutting gun head structure, which comprises: a cutting head comprising a nozzle, an electrode being disposed within the nozzle; the anti-burning extension head is arranged on the nozzle, an extension part and a thickening part extending out of the nozzle are arranged on the anti-burning extension head, and a triangular connecting part is arranged between the extension part and the thickening part. According to the plasma cutting gun head structure, the anti-burning extension head is utilized, after the anti-burning extension head is installed on the nozzle, air flow is sprayed out along the anti-burning extension head to play a role in guiding the air flow, the phenomenon of burning head caused by oblique blowing of the air flow is prevented, when an electric arc is scratched by the air flow, the extension part is scratched at first to cause the extension part to be heated and lighten, so that the electric arc can be found out in time, and the inclined air duct and the arc groove are arranged to play a role in guiding high-pressure air flow, so that the probability that the electric arc is blown by the air flow is reduced.

Description

Plasma cutting gun head structure

Technical Field

The utility model relates to the technical field of ion cutting, in particular to a plasma cutting gun head structure.

Background

Plasma cutting is a method of blowing an arc by compressed air and cutting with the heat of the arc to locally melt or evaporate metal.

According to patent number CN201420627568.1, publication (bulletin) day: 2015-02-25, a gun head structure of a plasma cutting gun is disclosed. The plasma cutting gun mainly solves the technical problem that in the using process of the traditional plasma cutting gun, the ceramic current divider and the electrode holder in the gun head structure have poor concentricity, so that the cutting quality and performance are affected when the plasma cutting gun is used. The electrode holder is characterized by comprising a sheath, a nozzle, an electrode holder and a shunt, wherein the nozzle is connected to the electrode holder, the shunt is positioned between the electrode holder and the sheath, an elliptical positioning surface is arranged on the periphery of the electrode holder, the positioning surface comprises an inner arc surface and an inner clamping surface, a positioning hole is arranged in the shunt, the positioning hole is also elliptical and comprises an outer arc surface and an outer clamping surface, the inner arc surface is matched with the outer arc surface, the inner clamping surface is matched with the outer clamping surface, the electrode holder is matched with the positioning surface to form circumferential limit fit of the electrode holder and the shunt, and the electrode holder is fixedly connected with the sheath through a locking piece. Because the current divider and the electrode holder are in limit fit with each other in the gun head structure of the plasma cutting gun, concentricity is guaranteed, stability is good in working, accuracy is high, and the nozzle is effectively prevented from being damaged by an electric arc due to non-concentricity in cutting, so that the processing quality of a product is improved.

In the prior art including above-mentioned patent, when the electric arc blows out along compressed air, can appear shifting because of compressed air's blowing direction, when the blowing direction skew of electric arc is too big, the electric arc can scrape the rifle head inner wall to make the rifle head by the electric arc melting appear the phenomenon of burning head.

Disclosure of Invention

The utility model aims to provide a plasma cutting gun head structure, which aims to solve the problem that a gun head is melted by an electric arc to generate a burning head.

In order to achieve the above object, the present utility model provides the following technical solutions: a plasma cutting torch head structure comprising:

a cutting head comprising a nozzle, an electrode being disposed within the nozzle;

the anti-burning extension head is arranged on the nozzle, an extension part and a thickening part extending out of the nozzle are arranged on the anti-burning extension head, and a triangular connecting part is arranged between the extension part and the thickening part.

Preferably, the inner wall of the burn-proof extension head is provided with an air entraining fillet.

Preferably, a guard ring is sleeved on the nozzle, a shielding cover protector is clamped on the guard ring, and the anti-burning extension head extends out of the shielding cover protector.

Preferably, the electrode is sleeved with a diverter ring, a plurality of inclined air channels are formed in the diverter ring in a circumferential array, and the inclined air channels face the nozzle.

Preferably, the inner wall of the nozzle is provided with an arc groove, and the inclined air duct faces the arc groove.

Preferably, the anti-burn extension head is a brass head.

Preferably, the shunt ring is a ceramic ring.

In the technical scheme, the plasma cutting gun head structure provided by the utility model has the following beneficial effects: after the anti-burning extension head is arranged on the nozzle, air flow is sprayed out along the anti-burning extension head to play a role in guiding the air flow, so that the phenomenon of burning head caused by oblique blowing of the air flow is prevented, and when an electric arc is scratched by the oblique blowing of the air flow, the extension part is scratched first to cause the extension part to be heated and lighten, so that the electric arc can be found out in time, and an oblique air duct and an arc groove are arranged to play a role in guiding high-pressure air flow, so that the probability that the electric arc is blown by the air flow is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic view of an embodiment of the present utility model;

FIG. 2 is an overall explosion schematic provided by an embodiment of the present utility model;

FIG. 3 is a schematic overall cross-sectional view of an embodiment of the present utility model;

fig. 4 is an enlarged schematic view of fig. 3 at a.

Reference numerals illustrate:

1. a guard ring; 11. the clamping ring groove is connected; 12. a hollow portion; 2. a cutting head; 21. a shield protector; 22. a nozzle; 24. an electrode; 221. an arc groove; 23. a shunt ring; 231. an inclined air duct; 3. an anti-burn extension head; 31. air-entraining fillets; 32. an extension; 33. a thickened portion; 34. and a triangle connecting part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

As shown in fig. 1-4, a plasma cutting torch head structure, comprising:

a cutting head 2 comprising a nozzle 22, an electrode 24 being provided within the nozzle 22;

the burn-proof extension head 3 is disposed on the nozzle 22, an extension portion 32 and a thickened portion 33 extending out of the nozzle 22 are disposed on the burn-proof extension head 3, and a triangle connecting portion 34 is disposed between the extension portion 32 and the thickened portion 33.

Specifically, the cutting head 2 includes a nozzle 22, an electrode 24 is disposed in the nozzle 22, the cutting head 2 is fixedly connected with a high-pressure air source, the anti-burn extension head 3 is disposed on the nozzle 22, an extension portion 32 and a thickening portion 33 extending out of the nozzle 22 are disposed on the anti-burn extension head 3, the lengths of the extension portion 32 and the thickening portion 33 are 3 mm-12 mm, a triangle connecting portion 34 is disposed between the extension portion 32 and the thickening portion 33, when in use, the high-pressure air source ejects air flow along the nozzle 22 to eject an electric arc between the electrode 24 and the nozzle 22 to cut metal, and the air flow ejects along the inner wall of the anti-burn extension head 3, so that the effect of guiding is achieved to avoid a burn head phenomenon caused by oblique blowing of the air flow, and when the electric arc is scratched by the air flow, the extension portion 32 is scratched at first to cause the extension portion 32 to be heated and light, the air ejection can be found out in time, and the support of the triangle connecting portion 34 and the extension portion 33 can be reduced, so that the deformation of the extension portion 32 after being heated can be reduced for subsequent use.

In the above technical scheme, after the anti-burn extension head 3 is installed on the nozzle 22, the air flow is sprayed out along the anti-burn extension head 3 to play a role in guiding the air flow, so that the phenomenon of burning head caused by oblique blowing of the air flow is prevented, and when the electric arc is scratched by the oblique blowing of the air flow, the extending part 32 is scratched first to cause the extending part 32 to be heated and brightened, so that the electric arc is found in time, and the inclined air duct 231 and the arc groove 221 are arranged to play a role in guiding the high-pressure air flow, so that the probability that the electric arc is blown askew by the air flow is reduced.

As the embodiment of the utility model further provides an embodiment, the bleed air fillet 31 has been seted up to the anti-burn extension head 3 inner wall, bleed air fillet 31 is used for guiding the air current in the nozzle 22 to get into in the anti-burn extension head 3, the cover is equipped with shroud ring 1 on nozzle 22, the joint annular 11 has been seted up on the shroud ring 1, the joint has shield cover protector 21 on the joint annular 11, the anti-burn extension head 3 extends shield cover protector 21, shield cover protector 21 prevents electric arc injury operating personnel, the well portion 12 has been seted up on the shroud ring 1, isolated heat in the time of the weight that the well portion 12 can alleviate shroud ring 1.

As the embodiment of the utility model provides a further, the cover is equipped with the split ring 23 on the electrode 24, is circumference array on the split ring 23 and has seted up a plurality of slope wind channels 231, and the arc groove 221 has been seted up to slope wind channel 231 towards nozzle 22, and arc groove 221 has been seted up to nozzle 22 inner wall, and slope wind channel 231 is towards arc groove 221, and the high-pressure air current is gone out along the slope of a plurality of slope wind channels 231 and is flowed in order to get into in preventing burn extension head 3 along arc groove 221 for the air current can be guided the flow direction when nozzle 22 is interior, reduces the arc by the skew probability of air current blowing.

As the embodiment of the utility model further provides, prevent burn extension head 3 is made for brass, and the cost is lower when electric conductivity is better, and shunt ring 23 is made for ceramic, and hardness is higher when being as the insulator, non-deformable.

Working principle: the high-pressure air source sprays air flow along the nozzle 22 to cut metal by spraying electric arc between the electrode 24 and the nozzle 22, the air flow is sprayed along the inner wall of the anti-burning extension head 3 to play a role of guiding so as to avoid the phenomenon of burning head caused by oblique blowing of the air flow, when the electric arc is scratched by the air flow, the extension part 32 is scratched firstly to cause the extension part 32 to be heated and lighten, at the moment, the air spraying can be timely found out, and the deformation of the extension part 32 after being heated can be reduced by the support of the thickening part 33 and the triangular connecting part 34 for subsequent use, and the high-pressure air flow is sprayed obliquely along the plurality of inclined air channels 231 and flows along the arc grooves 221 to enter the anti-burning extension head 3, so that the air flow can be guided to flow direction when the air flow is in the nozzle 22, and the probability that the electric arc is blown by the air flow is distorted is reduced.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims (7)

1. A plasma cutting torch head structure, comprising:

a cutting head (2) comprising a nozzle (22), an electrode (24) being provided within the nozzle (22);

the anti-burning extension head (3) is arranged on the nozzle (22), an extension part (32) and a thickening part (33) extending out of the nozzle (22) are arranged on the anti-burning extension head (3), and a triangular connecting part (34) is arranged between the extension part (32) and the thickening part (33).

2. A plasma cutting gun head structure according to claim 1, characterized in that the inner wall of the burn-proof extension head (3) is provided with air entraining fillets (31).

3. The plasma cutting gun head structure according to claim 1, wherein a guard ring (1) is sleeved on the nozzle (22), a shielding case protector (21) is clamped on the guard ring (1), and the burn-proof extension head (3) extends out of the shielding case protector (21).

4. The plasma cutting gun head structure according to claim 1, wherein the electrode (24) is sleeved with a diverter ring (23), a plurality of inclined air channels (231) are formed in a circumferential array on the diverter ring (23), and the inclined air channels (231) face the nozzle (22).

5. The plasma cutting gun head structure according to claim 4, wherein the inner wall of the nozzle (22) is provided with an arc groove (221), and the inclined air duct (231) faces the arc groove (221).

6. A plasma cutting torch head structure according to claim 1, characterized in that the burn-out preventing extension head (3) is a brass head.

7. A plasma cutting torch head structure according to claim 4, wherein the shunt ring (23) is a ceramic ring.