CN101733530A - Small-bore MIG (metal-inert gas) surfacing torch - Google Patents
Small-bore MIG (metal-inert gas) surfacing torch Download PDFInfo
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- CN101733530A CN101733530A CN200910186647A CN200910186647A CN101733530A CN 101733530 A CN101733530 A CN 101733530A CN 200910186647 A CN200910186647 A CN 200910186647A CN 200910186647 A CN200910186647 A CN 200910186647A CN 101733530 A CN101733530 A CN 101733530A
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Abstract
The invention relates to a small-bore MIG (metal-inert gas) surfacing torch comprising a gun body and a gun head. An included angle of 45 degrees to 75 degrees is formed between the center line of the gun head and the axis line of the gun body; the gun body comprises a water-cooled casing, a pipe assembly and an insulating bushing, wherein the pipe assembly is mutually insulated from the water-cooled casing through the insulating bushing; the pipe assemblies comprise a wire feeding pipe, a protective gas path, a water inlet pipe and a water return pipe; the gun body is provided with a conductive lump which is used for conducting electric current into welding wires in the wire feeding pipe; the gun head comprises a fixed seat, a welding wire passage, a conducting tip and a protective gas guiding assembly; the protective gas guiding assembly is used for importing protective gas into a workpiece welding area at least and communicated with the protective gas path in a gas mode; the center of the conducting tip is provided with a through hole which is communicated with the welding wire passage; and the welding wires sequentially pass through the welding wire passage and the through hole. The invention can effectively improve the production efficiency by a design mechanism that the included angle of 45 degrees to 75 degrees is formed between the center line of the gun head and the axis line of the gun body.
Description
Technical field
The present invention relates to a kind of small-bore MIG (metal-inert gas) surfacing torch.
Background technology
MIG weldering is by metal-arc inert-gas welding(MIG welding), supplies with protective atmosphere from the nozzle of rifle head, and welding wire is by arc-melting, and the ignition tip from the rifle head is sent into welding region and come welding work pieces.The MIG welding is more more effective than the TIG welding, can be widely used in the welding of workpiece such as copper alloy, aluminium, mild steel.The protective atmosphere of MIG welding also is an inert gas, but different with the TIG welding, and the protective atmosphere of MIG weldering will add 1% oxygen usually in argon gas, improve the stability of electric arc.
Referring to application number is 200510069460.0 Chinese patent, discloses a kind of welding torch of the MIG of being used for welding in this patented technology, and it comprises: be used for the hollow valve by accommodating fluid; Its coaxial arrangement is used for from the tip of mind-set Workpiece supply welding rod welding wire wherein in described hollow valve; Can be rotated to support on the tumbler on the described tip, described tumbler comprises: can be rotated to support on the bearing on the described tip; Be connected with described bearing, and be subjected to flowing of described fluid and a plurality of blades and the protractor of generation revolving force.
The rifle head of above-mentioned this MIG weldering and rifle body are along straight line, and promptly the axial line of the center line of rifle head and rifle body is located along the same line.Such MIG weldering is suitable for the inwall in the bigger hole of diameter is welded, and there is certain limitation in the built-up welding of aperture inwall.In the industrial equipment manufacture process, often will carry out built-up welding, and the MIG welding gun of existing similar said structure can't be finished the work obviously, thereby influence the manufacturing of equipment the aperture inwall of tens millimeters internal diameters.
Summary of the invention
The object of the present invention is to provide a kind of rifle head and rifle body to be the small-bore MIG (metal-inert gas) surfacing machine of 45 to 75 degree angles.
In order to reach above purpose, the scheme that the present invention adopts is:
A kind of small-bore MIG (metal-inert gas) surfacing torch is characterized in that: it comprises the rifle body, is positioned at the rifle head of described rifle body leading section, forms the angle of 45 to 75 degree between described rifle head center line and the described rifle body axial line;
Described rifle body comprises water cooled housing, is arranged on pipe assembly, the insulating bushing of interval between described water cooled housing and described pipe assembly in the water cooled housing, described pipe assembly and water cooled housing are by this insulating bushing mutually insulated, described pipe assembly comprise be used for to rifle head place send into continuously welding wire wire-feeding pipe, be used for to rifle head place send into protective gas the protection gas circuit, be used for the water inlet pipe and the return pipe of cooling water circulation, also be provided with the conducting block that the welding wire that is used in described wire-feeding pipe imports electric current on the described rifle body;
Described rifle head comprises holder, be arranged on channel of welding wire on the described holder, be arranged on ignition tip on the described holder, be used at least workpiece welding region place being imported the protection conductance stream assembly of protective gas; described protection conductance stream assembly and the gas connection mutually of described protection gas circuit; described ignition tip center has through hole; described through hole is connected with described channel of welding wire, and welding wire passes from described channel of welding wire and through hole successively.
Above technical scheme can be preferably; described protection gas circuit comprises the protection tracheae; described protection conductance stream assembly comprises current divider, is arranged on the hollow nozzle of described holder lower end; described hollow nozzle and the coaxial setting of described current divider; and; described hollow nozzle is positioned at the outside of current divider, and described channel of welding wire passes through the gas connection mutually of described current divider with described hollow nozzle, and described protection tracheae is connected with the through hole at described ignition tip center.Further preferred, the spout place of described hollow nozzle is provided with the air sifter cover.
Above technical scheme also can be preferably, is the angle of 45 to 50 degree between described rifle head center line and the described rifle body axial line.
Above technical scheme also can be preferably, between described rifle head and the rifle body for being rigidly connected, the connecting portion that has rigidity between further preferred described rifle head and the rifle body, be rigidly connected mutually by this connecting portion between this described rifle head and the rifle body, again preferably, the holder of described connecting portion and rifle head is wholely set.
Above technical scheme also can be preferably, the discharge of described water inlet pipe and return pipe be the 2-4 liter/minute.
Above technical scheme also can be preferably, and the external diameter of described water cooled housing is smaller or equal to 45mm.
Because the present invention has adopted above technical scheme, its advantage is:
1, is the design organization that 45 to 75 angles are arranged between the axial line of the center line of employing rifle head and rifle body, the rifle body can satisfy under the prerequisite of support strength lengthening as far as possible, but the diameter dimension and the depth dimensions of welder's part have been dwindled greatly, solved the technical barrier of the MIG built-up welding of aperture inner walls of deep holes, can realize postwelding internal diameter 〉=50mm, the workpiece inwall of length≤1000mm carries out effective built-up welding, has improved production efficiency;
2, be used for the tracheae of the pipe of recirculated cooling water, the protection gas that is used to circulate and carry the wire-feeding pipe of welding wire all to be arranged on structure in the rifle body, the physical dimension of having dwindled welding gun rifle body;
3, the shell of rifle body adopts the hydronic water cooled housing of water, has effectively protected the pipe in the shell, has improved the continuous welding ability of welding gun, has improved production efficiency.
Description of drawings
Accompanying drawing 1 is the front view of small-bore MIG (metal-inert gas) surfacing torch of the present invention;
Accompanying drawing 2 is the vertical view of small-bore MIG (metal-inert gas) surfacing torch of the present invention;
Accompanying drawing 3 is the profile of rifle head of the present invention;
Accompanying drawing 4 is the structural representation of current divider of the present invention;
Wherein: 1, rifle body; 2, rifle head; 3, water cooled housing; 4, insulating bushing; 5, wire-feeding pipe; 6, protection tracheae; 7, holder; 8, channel of welding wire; 9, ignition tip; 10, rifle head center line; 11, rifle body axial line; 12, current divider; 13, hollow nozzle; 14, through hole; 15, conducting block.
The specific embodiment
The present invention is further illustrated in conjunction with Figure of description below by embodiment:
Shown in accompanying drawing 1,2: a kind of small-bore MIG (metal-inert gas) surfacing torch, it comprises rifle body 1, is positioned at the rifle head 2 of rifle body 1 leading section, form the angle of 45 to 75 degree between rifle head center line 10 and the rifle body axial line 11, when being 45 degree angles between rifle head center line 10 and the rifle body axial line 11 is optimal selection, the rifle body can satisfy under the prerequisite of support strength lengthening as far as possible, but the diameter dimension and the depth dimensions of welder's part have been dwindled greatly, can realize postwelding internal diameter 〉=50mm, the workpiece inwall of length≤1000mm carries out effective built-up welding, has improved production efficiency.In addition, between rifle body 1 and the rifle head 2 for being rigidly connected, the connecting portion that has rigidity between rifle body 1 and the rifle head 2, be rigidly connected mutually by this connecting portion between rifle body 1 and the rifle head 2, and the holder of connecting portion and rifle head 2 is wholely set, manage respectively therewith that connecting portion is connected in the rifle body 1, and seal mutually by securing member.The connection of this type of rigidity has reduced rifle body that welding gun causes because of welding wire and workpiece bonding and has damaged or be out of shape service life of having improved welding gun when motion.
Rifle body 1 comprises water cooled housing 3, coaxial pipe assembly, the insulating bushing 4 of interval between water cooled housing 3 and pipe assembly that is arranged in the water cooled housing 3, and pipe assembly and water cooled housing 3 are by these insulating bushing 4 mutually insulateds.Insulating bushing 4 can avoid electric conductor to be connected to form the loop and to influence the stability of welding with outside.Water cooled housing 3 comprises inner and outer wall, carries out the cold water circulation between inside and outside wall, and the external diameter of water cooled housing 3 is preferably smaller or equal to 45mm.The circular lining that has a plurality of circular holes in the middle of insulating bushing 4 can adopt, each pipe in the pipe assembly is inserted in respectively in the different circular holes, the external peripheral surface of insulating bushing 4 is adjacent to mutually with the internal face of water cooled housing 3, can realize managing the mutually insulated of assembly and water cooled housing like this.
The pipe assembly comprise be used for to rifle head 2 places send into continuously welding wire wire-feeding pipe 5, be used for to rifle head 2 places send into protective atmosphere the protection gas circuit, be used for the water inlet pipe and the return pipe of cooling water circulation; also be provided with the conducting block 15 that is used for the welding wire in the wire-feeding pipe 5 is imported electric current on the rifle body 1; and water inlet pipe and return pipe with the 2-4 liter/minute discharge circulate, be preferably in more than 3 liters/minute.Aqueous vapor pipe and wire-feeding pipe 5 all in rifle body 1, have dwindled the physical dimension of welding gun integral body, and simultaneously, aqueous vapor pipe and wire-feeding pipe have also been protected in the cooling water circulation, have improved the continuous welding ability of welding gun, have improved production efficiency.
Shown in accompanying drawing 3: rifle head 2 comprises holder 7, be arranged on channel of welding wire 8 on the holder 7, be arranged on ignition tip 9 on the holder 7, be used at least workpiece welding region place being imported the protection conductance stream assembly of protection gas; protection conductance stream assembly and the gas connection mutually of protection gas circuit; ignition tip 9 centers have through hole 14; through hole 14 is connected with channel of welding wire 8, and welding wire passes from channel of welding wire 8 and through hole 14 successively.
The protection gas circuit comprises protection tracheae 6; protection conductance stream assembly comprises current divider 12; 4 shown with reference to accompanying drawing, as to be arranged on holder 7 lower ends hollow nozzle 13; hollow nozzle 13 and current divider 12 coaxial settings; and hollow nozzle 13 is positioned at the outside of current divider 12; channel of welding wire 8 realizes that by current divider 12 gas is communicated with hollow nozzle 13; protection tracheae 6 is connected with the through hole 14 at ignition tip 9 centers; the spout place of hollow nozzle 13 is provided with the air sifter cover, and effectively control is given vent to anger evenly from hollow nozzle 13 ejection protection gas.
When using welding gun to weld, conducting block 15 imports electric current to welding wire, welding wire passes from channel of welding wire 8 and through hole 14 successively, welding wire melted and finish welding workpiece, meanwhile, the workpiece welding region of through hole 14 is protected by current divider 12 shunting parts from the protective gas of protection tracheae 6 ejections; Another part then from hollow nozzle 13 ejections, is protected the heat-affected zone that produces owing to heat conduction in the welding process, thereby has been improved welding quality.
The foregoing description only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage that is familiar with this technology can understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (9)
1. small-bore MIG (metal-inert gas) surfacing torch, it is characterized in that: it comprises the rifle body, is positioned at the rifle head of described rifle body leading section, forms the angles of 45 to 75 degree between described rifle head center line and the described rifle body axial line;
Described rifle body comprises water cooled housing, is arranged on pipe assembly, the insulating bushing of interval between described water cooled housing and described pipe assembly in the water cooled housing, described pipe assembly and water cooled housing are by this insulating bushing mutually insulated, described pipe assembly comprise be used for to rifle head place send into continuously welding wire wire-feeding pipe, be used for to rifle head place send into protective gas the protection gas circuit, be used for the water inlet pipe and the return pipe of cooling water circulation, also be provided with the conducting block that the welding wire that is used in described wire-feeding pipe imports electric current on the described rifle body;
Described rifle head comprises holder, be arranged on channel of welding wire on the described holder, be arranged on ignition tip on the described holder, be used at least workpiece welding region place being imported the protection conductance stream assembly of protective gas; described protection conductance stream assembly and the gas connection mutually of described protection gas circuit; described ignition tip center has through hole; described through hole is connected with described channel of welding wire, and welding wire passes from described channel of welding wire and through hole successively.
2. small-bore MIG (metal-inert gas) surfacing torch according to claim 1; it is characterized in that: described protection gas circuit comprises the protection tracheae; described protection conductance stream assembly comprises current divider, is arranged on the hollow nozzle of described holder lower end; described hollow nozzle and the coaxial setting of described current divider; and; described hollow nozzle is positioned at the outside of current divider; described channel of welding wire passes through the gas connection mutually of described current divider with described hollow nozzle, and described protection tracheae is connected with the through hole at described ignition tip center.
3. small-bore MIG (metal-inert gas) surfacing torch according to claim 2 is characterized in that: the spout place of described hollow nozzle is provided with the air sifter cover.
4. small-bore MIG (metal-inert gas) surfacing torch according to claim 1 is characterized in that: the angle that is 45 to 50 degree between described rifle head center line and the described rifle body axial line.
5. small-bore MIG (metal-inert gas) surfacing torch according to claim 1 is characterized in that: between described rifle head and the rifle body for being rigidly connected.
6. small-bore MIG (metal-inert gas) surfacing torch according to claim 5 is characterized in that: the connecting portion that has rigidity between described rifle head and the rifle body is rigidly connected mutually by this connecting portion between described rifle head and the rifle body.
7. small-bore MIG (metal-inert gas) surfacing torch according to claim 6 is characterized in that: the holder of described connecting portion and rifle head is wholely set.
8. small-bore MIG (metal-inert gas) surfacing torch according to claim 1 is characterized in that: the discharge of described water inlet pipe and return pipe be the 2-4 liter/minute.
9. small-bore MIG (metal-inert gas) surfacing torch according to claim 1 is characterized in that: the external diameter of described water cooled housing is smaller or equal to 45mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910186647A CN101733530A (en) | 2009-12-07 | 2009-12-07 | Small-bore MIG (metal-inert gas) surfacing torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910186647A CN101733530A (en) | 2009-12-07 | 2009-12-07 | Small-bore MIG (metal-inert gas) surfacing torch |
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| Publication Number | Publication Date |
|---|---|
| CN101733530A true CN101733530A (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910186647A Pending CN101733530A (en) | 2009-12-07 | 2009-12-07 | Small-bore MIG (metal-inert gas) surfacing torch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054898A (en) * | 2020-08-10 | 2022-02-18 | 山东大学 | Low-heat-input additive preparation spray gun based on arc heat source, preparation device and method |
-
2009
- 2009-12-07 CN CN200910186647A patent/CN101733530A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054898A (en) * | 2020-08-10 | 2022-02-18 | 山东大学 | Low-heat-input additive preparation spray gun based on arc heat source, preparation device and method |
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Application publication date: 20100616 |