Plasma cutting gun structure with arc striking function

Abstract

The utility model discloses a plasma cutting gun structure with an arc striking function. The plasma cutting gun structure comprises a pneumoelectric pipeline, an arc striking assembly, a protective cap, an electrode, a diverter and a nozzle. The pneumoelectric pipeline and the arc striking assembly are fixed through a mould pressing insulation sleeve shell, the protective cap is arranged on the arc striking assembly, the electrode is arranged on the pneumoelectric pipeline, the shunt is arranged on the electrode, the nozzle is arranged between the shunt and the protective cap, the pneumoelectric pipeline is communicated with an inner cavity of the protective cap, and the shunt is provided with an open hole communicated with an inner cavity of the nozzle and an inner cavity of the protective cap. A cooling air hole communicated with the inner cavity of the protective cap is also formed outside the nozzle; according to the utility model, the installation and positioning of the gas-electric pipeline and the arc striking assembly are completed at one time through the mould pressing insulation sleeve shell, the processing and the assembly are simple, the trouble of producing and secondarily assembling a ceramic sleeve layer is avoided, and the generation of hidden damage caused by the assembly is avoided. In addition, compared with the traditional ceramic, the mould pressing insulation sleeve shell has better strength and is not easy to damage; and the later use and maintenance cost is reduced, and the practicability is very high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cutting torch, concretely relates to a take arc plasma cutting torch structure. BACKGROUND

[0002] In order to guarantee insulation and safe use, the ceramic insulation sleeve is generally arranged between the gas-electric pipeline and the arc leading assembly of the arc leading plasma cutting torch on the market at present, which can meet the use demand but also has the following shortcomings: 1. the ceramic insulation sleeve needs to be separately made and assembled with the cutting torch after being made, which is troublesome in production and processing; 2. ceramic is a fragile product, and the assembly process is blind assembly, so that the small cracks caused by installation are not easy to find, causing safety hazards, and the machine may be burned out, and the user may be harmed in life and safety; 3. the strength is not high, and the cutting torch is easy to be damaged when accidentally bumped, increasing the maintenance cost in later use; in summary, the arc leading plasma cutting torch structure that can effectively solve the above problems is proposed. SUMMARY

[0003] In view of the problems in the background art, the utility model aims to provide an arc leading plasma cutting torch structure, which effectively solves the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] An arc leading plasma cutting torch structure, comprising a gas-electric pipeline, an arc leading assembly, a protective cap, an electrode, a shunt and a nozzle; the gas-electric pipeline and the arc leading assembly are fixed through a molded insulation sleeve shell, the protective cap is arranged on the arc leading assembly, the electrode is arranged on the gas-electric pipeline, the shunt is arranged on the electrode, the nozzle is arranged between the shunt and the protective cap, the gas-electric pipeline is in communication with the inner cavity of the protective cap, the shunt is provided with an opening in communication with the inner cavities of the nozzle and the protective cap, and the nozzle is further provided with a cooling gas hole in communication with the inner cavity of the protective cap.

[0006] Further, the gas-electric pipeline comprises a gas-electric inlet pipe and a gas-electric connecting pipe in communication, and the upstream end of the gas-electric inlet pipe is further provided with a threaded joint.

[0007] Further, the arc leading assembly comprises an arc leading wire and an arc leading seat connected electrically.

[0008] Further, the protective cap is screwed on the arc leading seat, and a sealing ring is arranged between the protective cap and the arc leading seat.

[0009] Further, the protective cap is further provided with an isolation support, and the lower edge of the nozzle does not protrude from the enclosing space of the isolation support.

[0010] Further, the material of the molded insulation sleeve shell is bakelite.

[0011] The utility model has the advantages of the following beneficial effects:

[0012] In the utility model, the installation and positioning of the gas-electric pipeline and the arc leading assembly are completed at one time through the die pressing insulation cover shell, the processing and assembling are simple, the troubles of production and secondary assembling of the ceramic cover layer are avoided, the generation of assembly hidden damage is avoided, in addition, the die pressing insulation cover shell has better strength than the traditional ceramic, is not easy to damage, reduces the later use and maintenance cost, and has strong practicability. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure schematic view of the utility model embodiment one.

[0014] Figure 2 It is a structure schematic view of the utility model embodiment two. DETAILED DESCRIPTION

[0015] The embodiments of the utility model will be further described in detail below in combination with the drawings and the embodiments. The following embodiments are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0016] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed in a particular orientation and be operated, therefore, cannot be understood as a limitation on the utility model. In the description of the utility model, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0017] Embodiment one

[0018] As Figure 1As shown, the arc striking plasma cutting torch structure described in the embodiment comprises a gas-electric pipeline, an arc striking assembly, a protective cap 1, an electrode 2, a shunt 3 and a nozzle 4; the gas-electric pipeline and the arc striking assembly are fixed through a molded insulation sleeve 5, specifically, the gas-electric pipeline comprises a gas-electric inlet pipe 6 and a gas-electric connecting pipe 7 which are communicated, and the upstream end of the gas-electric inlet pipe 6 is further provided with a threaded joint 8 for line connection, the material of the molded insulation sleeve 5 is bakelite, the arc striking assembly comprises an arc striking wire 9 and an arc striking seat 10 which are electrically connected, one end of the arc striking seat 10 is embedded in the molded insulation sleeve 5, and the part of the arc striking seat 10 which is located outside the molded insulation sleeve 5 is provided with external threads, the protective cap 1 is screwed on the arc striking seat 10 and a sealing ring 11 is arranged between the protective cap 1 and the arc striking seat 10 in cooperation, the electrode 2 is arranged at the end of the gas-electric connecting pipe 7, the shunt 3 is arranged outside the electrode 2, the nozzle 4 is arranged between the shunt 3 and the protective cap 1, the gas-electric pipeline is communicated with the inner cavity of the protective cap 1, the shunt 3 is provided with an opening 12 which communicates the inner cavity of the nozzle 4 with the inner cavity of the protective cap 1, and the nozzle 4 is further provided with a cooling air hole 13 which is communicated with the inner cavity of the protective cap 1;

[0019] Air and electricity enter through the gas-electric inlet pipe 6 and the gas-electric connecting pipe 7, the electrode 2 is electrified, part of the air enters the nozzle 4 through the opening 12 and is then ionized by the electrode 2 and sent out through the nozzle 4, and part of the air flows to the outer circle of the nozzle 4 through the cooling air hole 13 to realize cooling, compared with the prior art, the installation and positioning of the gas-electric pipeline and the arc striking assembly are completed at one time through the molded insulation sleeve 5 in the embodiment, the processing and assembly are simple, the trouble of producing and secondarily assembling the ceramic sleeve layer is avoided, in addition, the molded insulation sleeve 5 has better strength than the traditional ceramic and is not easy to be damaged, the maintenance cost in the later use is reduced, and the embodiment has strong practicability

[0020] The protective cap 1 is further fixed with an isolation support 14, the lower edge of the nozzle 4 does not protrude into the enclosed space of the isolation support 14, the isolation support 14 can limit the distance between the nozzle 4 and the workpiece, ensure the smooth cutting and protect the nozzle 4, and avoid bumping and abrasion.

[0021] Embodiment two

[0022] As shown in the drawings, Figure 2 The difference between the embodiment and the embodiment one is that the arc striking seat 10 is completely arranged outside the molded insulation sleeve 5, and the other parts of the embodiment are the same as those of the embodiment one, which will not be repeated here.

[0023] The embodiments of the present application are given for the purpose of example and description, and are not exhaustive or limit the present application to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical application of the present application, and to enable those skilled in the art to understand the present application so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. An arc striking plasma torch structure comprising: The utility model relates to an arc striking device, which comprises an air-electric pipeline, an arc striking assembly, a protective cap, an electrode, a shunt and a nozzle.

2. The arc striking plasma torch structure of claim 1, wherein, The air-electric pipeline and the arc striking assembly are fixed by a molded insulation sleeve, the protective cap is arranged on the arc striking assembly, the electrode is arranged on the air-electric pipeline, the shunt is arranged on the electrode, the nozzle is arranged between the shunt and the protective cap, the air-electric pipeline is communicated with the inner cavity of the protective cap, the shunt is provided with an opening communicated with the inner cavity of the protective cap and the inner cavity of the nozzle, and the nozzle is further provided with a cooling hole communicated with the inner cavity of the protective cap.

3. The arc striking plasma torch of claim 2, wherein: The air-electric pipeline comprises an air-electric inlet pipe and an air-electric connecting pipe communicated with each other, and the air-electric inlet pipe is further provided with a threaded joint at the upstream end.

4. The arc striking plasma torch of claim 3, wherein, The arc striking assembly comprises an arc striking wire and an arc striking seat electrically connected with each other.

5. The arc striking plasma torch of claim 4, wherein: The protective cap is screwed on the arc striking seat, and a sealing ring is arranged between the protective cap and the arc striking seat.

6. The arc striking plasma torch of claim 1, wherein, The protective cap is further fixed with an isolation support, and the lower edge of the nozzle does not protrude into the enclosed space of the isolation support. The material of the molded insulation sleeve is bakelite.

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