CN100429031C - Welding torch for milling head sleeve and tungsten-pole inert gas protection welding - Google Patents
Welding torch for milling head sleeve and tungsten-pole inert gas protection welding Download PDFInfo
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- CN100429031C CN100429031C CNB2005100042344A CN200510004234A CN100429031C CN 100429031 C CN100429031 C CN 100429031C CN B2005100042344 A CNB2005100042344 A CN B2005100042344A CN 200510004234 A CN200510004234 A CN 200510004234A CN 100429031 C CN100429031 C CN 100429031C
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Abstract
To provide a TIG (inert gas shielded tungsten arc) welding torch in which the seizure in the contact faces between a collet and a collet body is prevented to facilitate the exchange of an electrode, the phenomenon that arc heat conducts from the electrode to a torch body via the collet body is suppressed and large welding current can be made to flow, and whose using rate can be increased. The TIG welding torch is provided with a torch body, a collet supporting an electrode located at the center of the torch body, and a collet body supported by a metallic member in contact with the inside thereof and supporting the collet in contact therewith. The collet body is composed of a cylindrical insert member fitted to the tip part of the collet body and having a receiving hole of the electrode at an axial core part, and the balance collet body shell having an inserting hole of the collet. The insert member is formed of an electrically conductive metal having high electrical conductivity and having impact resistance and wear resistance. The collet body shell is formed of an electrically conductive metal having low thermal conductivity.
Description
Technical field
The present invention relates in order to the dog sleeve pipe (collet body) that improves gas tungsten arc welding and use its gas tungsten arc welding welding torch.
Background technology
[prior art 1]
With reference to Fig. 2, the gas tungsten arc welding welding torch of prior art 1 is described.Fig. 2 is the phantom of the gas tungsten arc welding welding torch of prior art.In the figure, welding torch body 1 is by roughly the hardware 1a of tubular and the insulating component 1b of the roughly tubular around this hardware of encirclement 1a form.Handgrip portion 2 is parts that the operator grasps, and is installed in the side of welding torch body 1, is formed by insulating component around the handgrip portion 2.
Electrode dog (collet) 3 is provided with the electrode perforation jack 3a that is used to pass non-consumable electrode 4 (tungsten electrode) at the axle core, and front end forms pointed tapering 3b, forms from front end and connects the illustrated vertical grooving of omission that jack 3a extends along above-mentioned electrode.
Electrode dog push rod 6 leading sections are formed with external thread part 6a, and it is installed in and is formed in the internal thread part 1c on the hardware 1a of welding torch body 1.By this electrode dog push rod 6 being screwed into the rearward end of the hardware 1a of welding torch body 1, and the pointed tapering 3b of electrode dog 3 contacts with the pointed tapering 5b of dog sleeve pipe 5 is inner, and vertical grooving of electrode dog 3 is fastened.Its result, electrode 4 is fixed on assigned position.
In when welding,, supply with to electrode 4 from omitting flow of power that illustrated welding supplies with supply unit hardware 1a, dog sleeve pipe 5, electrode dog 3 through welding torch body 1.(for example, with reference to patent documentation 1).Usually, electrode dog 3 and dog sleeve pipe 5 just separately leading section contact and power.
Next, its effect is described.If use gas tungsten arc welding welding torch to weld, then, arc heat can reach the temperature of several thousand degree owing to making the leading section of electrode 4 with above-mentioned formation.Then, this heat is situated between and is transmitted to welding torch body 1 by electrode dog 3 and dog sleeve pipe 5,1 heating of welding torch body.
In the ventilation type gas tungsten arc welding welding torch of manual usefulness and since the heating of welding torch body 1 make the temperature of handgrip portion 2 rise to 40 spend more than, then the operator is difficult to grasp this handgrip portion 2 and carries out operation.Therefore, rise according to the temperature of roughly handgrip portion 2 and decide permission electric current and utilization rate to 1 energising of welding torch body.
In addition, the material of electrode dog 3 and dog sleeve pipe 5 to electrode 4 power supply, and requires the high conductive metal of conductance for easily, therefore general copper or the copper alloy (below, claim copper alloy) of using.
On the other hand, this copper alloy, thermal conductivity height.Therefore, particularly when using protective gas 8 to weld with ventilation type gas tungsten arc welding welding torch as cooling way manual, the temperature of welding torch body 1 is very high, and the operator is difficult to grasp handgrip portion 2 and carries out operation.Therefore, for example surpass 200A, utilization rate above in 50% the welding method, be difficult to use existing gas tungsten arc welding welding torch at welding current to 1 energising of welding torch body.
Have again,, therefore need cut down this front end owing in weld job, want the front end of sacrificial electrode.At that time, the operator will not have under the condition of high temperature of cooling mostly in the temperature of gas tungsten arc welding welding torch, electrode dog push rod 6 is taken off from welding torch body 1.At this moment, arc heat passes to welding torch body 1 and electrode dog push rod 6, so welding torch body 1 and electrode dog push rod 6 threaded portion separately wear and tear, and can take place to install bad continually.
Therefore, surpass in the welding of being undertaken by manual operation gas tungsten arc welding welding torch of 200A, use the water-cooled gas tungsten arc welding welding torch of high price to replace ventilation type gas tungsten arc welding welding torch at welding current.
[prior art 2]
On the other hand, transmit to welding torch body 1 in order to suppress arc heat as far as possible, and use steel component at electrode dog and dog sleeve pipe.Steel component is bigger than copper alloy resistance, and therefore, if welding current surpasses 100A, then electrode dog, dog sleeve pipe and electrode 4 each leisure are powered, and contact sites can puncture, the electric arc instability.In addition, in the meantime sintering phenomenon can take place, be difficult to carry out electrode and change.
Therefore, use the gas tungsten arc welding welding torch of steel dog sleeve pipe and steel electrode dog, only be used in the gas tungsten arc welding of welding current below 100A.
At this, if making the material of steel dog sleeve pipe and steel electrode dog is copper alloy, then sintering phenomenon can obtain relaxing.But, the bad phenomenon described in the prior art 1 can take place.
Patent documentation 1: the spy opens the 2002-86273 communique
As mentioned above, the gas tungsten arc welding welding torch of prior art 1 uses the high copper alloy of thermal conductivity in the material of electrode dog 3 and dog sleeve pipe 5.Therefore; particularly when using protective gas 8 to weld with ventilation type gas tungsten arc welding welding torch as cooling means manual; arc heat passes to welding torch body 1 easily, and makes the temperature of welding torch body 1 very high, and the operator is difficult to grasp handgrip portion 2 and carries out operation.In addition, owing in weld job, will cut down the front end of electrode, so under operator's condition of high temperature of will not have in the temperature of gas tungsten arc welding welding torch mostly to cool off, electrode dog push rod 6 is taken off from welding torch body 1.Therefore, wear and tear in welding torch body 1 and electrode dog push rod 6 threaded portion separately, can take place to install bad continually.
Therefore, permission electric current and the utilization rate to 1 energising of welding torch body is limited.
In addition, in the gas tungsten arc welding welding torch of above-mentioned prior art 2, the material of electrode dog and dog sleeve pipe is used steel component.Steel component is bigger than copper alloy resistance, and therefore, if welding current surpasses 100A, then electrode dog, dog sleeve pipe and electrode 4 each leisure are powered, and contact sites can puncture, the electric arc instability.In addition, in the meantime sintering phenomenon can take place, be difficult to carry out electrode and change.Therefore, permission electric current and the utilization rate to 1 energising of welding torch body is limited.
Summary of the invention
The present invention; its purpose is to provide a kind of sintering of the contact-making surface that can prevent electrode dog and dog sleeve pipe and changes electrode easily, suppresses arc heat and be situated between by the dog sleeve pipe from electrode to the transmission of welding torch body, and can feed big welding current, can improve the gas tungsten arc welding welding torch of utilization rate.
To achieve these goals; the dog sleeve pipe of the 1st invention; be to possess: by metal parts with surround the welding torch body that the insulating component of this hardware forms; support is positioned at the electrode dog of the electrode at above-mentioned welding torch body center; be supported in the above-mentioned hardware and contact with above-mentioned electrode dog and support the dog sleeve pipe of gas tungsten arc welding welding torch of the dog sleeve pipe of this electrode dog with contacting; it is characterized in that: above-mentioned dog sleeve pipe is had the cylindric embedding member of the perforation jack of above-mentioned electrode by the axle core that is installed in above-mentioned dog sleeve pipe leading section; constitute with the dog sleeve body of the patchhole of the above-mentioned electrode dog of having of remainder; above-mentioned embedding member is by the conductance height; and the conductive metal with resistance to impact and mar proof forms, and above-mentioned dog sleeve body is formed by the low conductive metal of thermal conductivity.
The 2nd invention based on the described dog sleeve pipe of the 1st invention, is characterized in that above-mentioned embedding member is formed by copper or copper alloy, and above-mentioned dog sleeve body is formed by steel.
The 3rd invention is to use the gas tungsten arc welding welding torch of the described dog sleeve pipe of the 1st or the 2nd invention.
Gas tungsten arc welding welding torch of the present invention, the material of its dog sleeve body are the steel conductive metal lower than copper thermal conductivity, therefore, can suppress to be situated between by the dog sleeve body to the transmission of welding torch body owing to the heat that arc heat sends electrode.Consequently, even be that 250A, utilization rate reach uses in 50% o'clock at welding current to gas tungsten arc welding welding torch energising, also the temperature of handgrip portion can be risen be suppressed in the allowed band, promptly 40 spend below.
In addition, the embedding member of the dog sleeve pipe that contacts with copper alloy system electrode dog is a copper alloy system, and copper alloy is littler than steel component resistance, and therefore, electrode dog 3, dog sleeve pipe 9 and electrode 4 each comfortable power supply contact site can not puncture.Thereby, even be that 300A, utilization rate are to use in 60% o'clock at welding current to gas tungsten arc welding welding torch energising, can the generating electrodes dog and the sintering phenomenon of dog sleeve pipe yet, and can easily change electrode.
Its result; can be that 250A, utilization rate are 50% o'clock at welding current to the energising of gas tungsten arc welding welding torch; manually use ventilation type gas tungsten arc welding welding torch, and can enlarge the scope of application of the gas tungsten arc welding welding torch that manually carries out.
Description of drawings
Fig. 1 is the phantom of gas tungsten arc welding welding torch of the present invention.
Fig. 2 is the phantom of the gas tungsten arc welding welding torch of prior art.
Among the figure, 1-welding torch body; The 1a-hardware; The 1b-insulating component; The 1c-internal thread part; 2-handgrip portion; 3-electrode dog; The 3a-electrode connects jack; The pointed tapering of 3b-; 4-(on-consumable) electrode; 5-dog sleeve pipe; The 5a-electrode connects jack; The pointed tapering of 5b-; 5c-gas squit hole; 6-electrode dog push rod; The 6a-external thread part; The 7-nozzle; The 8-protective gas; 9-dog sleeve pipe; The pointed tapering of 9a-; 91-embeds member; The 91a-electrode connects jack; 92-dog sleeve body; 92a-electrode dog patchhole.
The specific embodiment
The working of an invention mode is described based on embodiment with reference to accompanying drawing.
Fig. 1 is the phantom of gas tungsten arc welding welding torch of the present invention.In the figure, the function except that dog sleeve pipe 9, identical with the prior art of Fig. 2, therefore attached with same-sign, omit its explanation.
In Fig. 1, dog sleeve pipe 9 is made of the cylindric embedding member 91 that is installed in the leading section inboard that includes this pointed tapering 9a and the dog sleeve body 92 of remainder.This embedding member 91 utilizes crimping, be pressed into or method such as welding is fixed on the front end of dog sleeve body 92.
In addition, embed member 91, have electrode at the axle core and connect jack 91a, form by conductance height, conductive metal, for example copper alloy with resistance to impact and mar proof.Dog sleeve body 92 has electrode dog patchhole 92a, is formed by the low conductive metal of thermal conductivity, for example steel (mild steel, stainless steel or special steel).
Among Fig. 1, electrode dog push rod 6 is screwed into the rearward end of the hardware 1a of capable welding torch body 1, then the leading section of electrode dog 3 contacts with embedding member 91, and electrode 4 is fixed on assigned position.Then, in when welding, from omit flow of power that illustrated welding supplies with supply unit through hardware 1a, the dog sleeve body 92 of welding torch body 1, embed member 91 and electrode dog 3, supply with to electrode 4.
To embedding the surface element of member 91 dog sleeve pipe 9 in addition, implement coating film treatment, can prevent the oxidation of dog sleeve body 92.
Also have, the material of the hardware 1a of welding torch body 1 is generally brass, and the screw thread joint portion of the hardware 1a of the rearward end of steel dog sleeve pipe 9 and welding torch body 1, steel dog sleeve pipe is not easy thermal expansion than brass, therefore, sintering can not take place.
Next, its effect is described.If use gas tungsten arc welding welding torch to weld, then, arc heat can reach the temperature of several thousand degree owing to making the leading section of electrode 4 with above-mentioned formation.And this heat is situated between and is transmitted to welding torch body 1 by electrode dog 3 and dog sleeve pipe 9., because the material of dog sleeve body 92 is the steel conductive metal lower than copper thermal conductivity, therefore, can suppress from the heat conduction of electrode 4 to welding torch body 1.Consequently, even be that 250A and utilization rate reach uses in 50% o'clock at welding current to gas tungsten arc welding welding torch energising, also the temperature of handgrip portion 2 can be risen be suppressed in the allowed band, promptly 40 spend below.
In addition, the embedding member 91 of the dog sleeve pipe 9 that contacts with copper alloy system electrode dog 3 is copper alloy system, and copper alloy is littler than steel component resistance, and therefore, electrode dog 3, dog sleeve pipe 9 and electrode 4 each comfortable power supply contact site can not puncture.Therefore, even be that 300A and utilization rate are to use in 60% o'clock at welding current to gas tungsten arc welding welding torch energising, can generating electrodes dog 3 and the sintering phenomenon of dog sleeve pipe 9 yet, and can change electrode easily.
Its result; can be that 250A, utilization rate are 50% o'clock at welding current to the energising of gas tungsten arc welding welding torch; manually use ventilation type gas tungsten arc welding welding torch, and can enlarge the scope of application of the gas tungsten arc welding welding torch that manually carries out.
Claims (3)
1. dog sleeve pipe; it is the dog sleeve pipe of gas tungsten arc welding welding torch; this gas tungsten arc welding welding torch possesses: by hardware and the electrode dog that surrounds welding torch body that the insulating component of this hardware forms, electrode that support is positioned at above-mentioned welding torch body center be supported on above-mentioned hardware and contact with above-mentioned electrode dog and support the dog sleeve pipe of this electrode dog with contacting, it is characterized in that:
Above-mentioned dog sleeve pipe is made of the dog sleeve body of cylindric embedding member and remainder, above-mentioned embedding member is installed in above-mentioned dog sleeve pipe leading section and has the perforation jack of above-mentioned electrode at the axle core, above-mentioned dog sleeve body has the patchhole of above-mentioned electrode dog, and above-mentioned embedding member is by the conductance height and have resistance to impact and the conductive metal of mar proof forms, and above-mentioned dog sleeve body is formed by the low conductive metal of thermal conductivity.
2. dog sleeve pipe according to claim 1 is characterized in that: above-mentioned embedding member is formed by copper or copper alloy, and above-mentioned dog sleeve body is formed by steel.
3. a gas tungsten arc welding welding torch uses claim 1 or 2 described dog sleeve pipes.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004007419A JP4391835B2 (en) | 2004-01-15 | 2004-01-15 | Collet body and TIG welding torch |
| JP2004007419 | 2004-01-15 | ||
| JP2004-007419 | 2004-12-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1640605A CN1640605A (en) | 2005-07-20 |
| CN100429031C true CN100429031C (en) | 2008-10-29 |
Family
ID=34821048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100042344A Active CN100429031C (en) | 2004-01-15 | 2005-01-07 | Welding torch for milling head sleeve and tungsten-pole inert gas protection welding |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4391835B2 (en) |
| CN (1) | CN100429031C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102123815B (en) * | 2008-08-13 | 2016-04-13 | 米亚基株式会社 | Arc welding torch |
| JP5402013B2 (en) * | 2009-01-22 | 2014-01-29 | パナソニック株式会社 | Welding torch |
| KR101095566B1 (en) * | 2009-03-11 | 2011-12-19 | 황원규 | Flexible tig welding torch |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05138356A (en) * | 1991-11-25 | 1993-06-01 | Mitsubishi Heavy Ind Ltd | Tig welding torch |
| CN2206176Y (en) * | 1994-07-30 | 1995-08-30 | 北京工业大学科技开发管理部 | Argon arc welding automatic welding blow lamp for contacting generating arc |
| JPH106014A (en) * | 1996-06-26 | 1998-01-13 | Mitsubishi Heavy Ind Ltd | Tig welding torch |
| US5714729A (en) * | 1995-06-30 | 1998-02-03 | Kabushiki Kaisha Toshiba | TIG welding method and welding torch therefor |
| JP2000094137A (en) * | 1998-09-22 | 2000-04-04 | Ishikawajima Harima Heavy Ind Co Ltd | Tig welding torch |
| JP2002086273A (en) * | 2000-09-14 | 2002-03-26 | Mizuho Sangyo Kk | Welding torch and method of welding |
-
2004
- 2004-01-15 JP JP2004007419A patent/JP4391835B2/en not_active Expired - Lifetime
-
2005
- 2005-01-07 CN CNB2005100042344A patent/CN100429031C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05138356A (en) * | 1991-11-25 | 1993-06-01 | Mitsubishi Heavy Ind Ltd | Tig welding torch |
| CN2206176Y (en) * | 1994-07-30 | 1995-08-30 | 北京工业大学科技开发管理部 | Argon arc welding automatic welding blow lamp for contacting generating arc |
| US5714729A (en) * | 1995-06-30 | 1998-02-03 | Kabushiki Kaisha Toshiba | TIG welding method and welding torch therefor |
| JPH106014A (en) * | 1996-06-26 | 1998-01-13 | Mitsubishi Heavy Ind Ltd | Tig welding torch |
| JP2000094137A (en) * | 1998-09-22 | 2000-04-04 | Ishikawajima Harima Heavy Ind Co Ltd | Tig welding torch |
| JP2002086273A (en) * | 2000-09-14 | 2002-03-26 | Mizuho Sangyo Kk | Welding torch and method of welding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1640605A (en) | 2005-07-20 |
| JP4391835B2 (en) | 2009-12-24 |
| JP2005199298A (en) | 2005-07-28 |
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