CN209830561U - Fine cold-compress welding gun for small-bore inner hole - Google Patents
Fine cold-compress welding gun for small-bore inner hole Download PDFInfo
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- CN209830561U CN209830561U CN201920413654.5U CN201920413654U CN209830561U CN 209830561 U CN209830561 U CN 209830561U CN 201920413654 U CN201920413654 U CN 201920413654U CN 209830561 U CN209830561 U CN 209830561U
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Abstract
The utility model provides a small aperture hole meticulous cold compress welder, including the body of a gun, set up rifle head and the heater passageway in body of a gun the place ahead, the rifle head includes high temperature resistant urceolus, sets up the high temperature resistant shunt and the tungsten utmost point of setting in the high temperature resistant shunt inside the high temperature resistant urceolus, high temperature resistant urceolus top is provided with sealed lid, the tungsten utmost point end stretches out from the through-hole of seting up in the high temperature resistant shunt bottom, the lateral wall on high temperature resistant urceolus upper portion is around being equipped with the water-cooling return bend, set up the inlet port that the position corresponds on the lateral wall on high temperature resistant urceolus and the high temperature resistant shunt middle; the hot wire channel is arranged under the gun body, and the outlet end of the hot wire channel straightly extends to the bottom end of the high-temperature resistant outer barrel. The small-aperture inner hole fine cold-compress welding gun has the advantages of scientific design, compact structure, good material increase effect and high welding efficiency.
Description
Technical Field
The utility model relates to a meticulous cold compress welding special plane, specific theory has related to a meticulous cold compress welder of aperture hole.
Background
The mining equipment needs to use special three-stage hydraulic cylinders, wherein the precision requirement of a middle cylinder hole is high, and the middle cylinder hole is easy to wear, corrode and leak after being used for a long time, so that the middle cylinder hole needs to be repaired; and the process is complicated during welding, and because the diameter of the middle cylinder hole is very small, a traditional welding gun cannot extend into the hole, so five steps are needed, namely firstly boring a middle cylinder bottom valve hole into a hole with the diameter of 120mm and the depth of 40mm, secondly turning and repairing a workpiece, thirdly welding in a vertical welding mode, fourthly milling a groove, and fifthly roughly and finely turning and repairing.
The fine cold compress welding special machine is additive repair equipment specially designed by the applicant for the special pipes, meets the repair requirements of the special pipes through the organic combination of digital synchronous precise control, swing technology application, a high-performance pulse low-temperature low-voltage welding power supply and a hot wire power supply, but has different characteristics of different pipes and parts, so that a welding gun meeting the characteristics is required to be adopted to ensure the welding effect.
In order to enable the gun head to bear the high temperature and the larger current of an electric arc, the gun head and the electrode wire of the welding gun bear the higher temperature, therefore, a heat dissipation structure needs to be additionally arranged to cool the gun head and the electrode wire in time so as to ensure the normal work of the welding gun, meanwhile, in order to protect a molten pool, shielding gas needs to be provided, the structural layout of the existing gun head of the welding gun is poor in reasonability, so that the existing gun head of the welding gun is large in size, cannot extend into a small-aperture inner hole (the aperture is 45mm, and the depth is 200 mm) with a small aperture for welding, if the size of the gun head is forcibly reduced, the untimely heat dissipation is easily caused, the airflow of the shielding gas is not; therefore, the repair and material increase are mostly carried out by adopting an electroplating mode, and the material increase effect is not ideal and the durability is not strong.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The utility model aims at the not enough of prior art to a design science, compact structure, increase material effectual, the welding is efficient meticulous cold compress welder of little aperture hole is provided.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a small-aperture inner hole fine cold-compress welding gun comprises a gun body, a gun head and a hot wire channel, wherein the gun head and the hot wire channel are arranged in front of the gun body; the hot wire channel is arranged under the gun body, and the outlet end of the hot wire channel straightly extends to the bottom end of the high-temperature resistant outer barrel.
Based on the above, the body of a gun includes the external pipe of rifle body, sets up side by side the inside water-cooling inlet tube, water-cooling outlet pipe and the intake pipe of external pipe of rifle, the pipe wall of water-cooling inlet tube the pipe wall of water-cooling outlet pipe with two liang of contacts of pipe wall of intake pipe, the both ends of water-cooling return bend communicate respectively the water-cooling inlet tube with the water-cooling outlet pipe, the intake pipe passes intercommunication behind the inlet port inside the high temperature resistant shunt.
Based on the above, an electrode wire used for connecting the gun head is arranged in the air inlet pipe.
Based on the above, high temperature resistant shunt includes the arc convergent part of below, evenly seted up a plurality of gas diffusion holes on the arc convergent part.
Based on the above, the middle upper part of the high-temperature-resistant shunt is in interference fit with the middle upper part of the high-temperature-resistant outer barrel.
Based on the above, high temperature resistant urceolus bottom is provided with the reposition of redundant personnel net, the bottom of arc convergent portion stretches out reposition of redundant personnel net setting.
Based on the above, the tip of the tungsten electrode is smoothly arranged.
Based on the above, the gun body surface cover is equipped with two and supports the cover, every support the cover all correspond the gun body is provided with fastening bolt, every support sheathe in all correspond the heater passageway and seted up the installation through-hole.
Based on the above, the mounting through holes are circular, and each support sleeve is provided with a channel fastening bolt corresponding to the hot wire channel.
Based on the above, the sealing cover is a screw.
Compared with the prior art, the utility model has substantive characteristics and progress, in particular to the utility model, the high temperature resistant diverter is arranged inside the high temperature resistant outer cylinder, thus leading the air flow to be more uniform and dispersing the air flow to protect the flame; the water-cooling bent pipe is wound on the outer side wall of the upper part of the high-temperature resistant outer cylinder, the part which is easy to burn out is cooled in real time, the air inlet hole is formed right below the water-cooling bent pipe, and after protective gas enters the high-temperature resistant splitter, the air can be driven and discharged to avoid residues, so that the protective effect is improved; the outlet end of the hot wire channel is arranged straightly, so that the space occupation caused by bending is avoided; whole welder is rational in infrastructure, the overall arrangement is compact, will take up space control to the minimum, makes the size can satisfy the requirement of the little aperture hole in little aperture to stretch into inside welding, the material increase of little aperture hole, compare with electroplating prosthetic mode, the welding is because high temperature effect, and prosthetic product durability and quality all obtain great improvement, in the hot wire passageway to the nozzle is carried through the welding wire that preheats, increases the mobility behind the welding wire melting, improves the roughness, and it has design science, compact structure, that the material increase is effectual, welding efficiency is high.
The water-cooling inlet tube the water-cooling outlet pipe with the intake pipe sets up side by side, can be to setting up the electrode line of intake pipe cools off in real time, avoids leading to the electrode line to blow because of the heavy current.
The middle upper part of the high-temperature-resistant diverter is in interference fit with the middle upper part of the high-temperature-resistant outer barrel, so that a gas leakage gap is prevented from being formed between the inner air inlet hole and the outer air inlet hole, and the stability of the protective air flow is prevented from being influenced.
The flow distribution net performs secondary flow distribution on the protective airflow, so that the sprayed airflow is more uniform.
And the tip of the tungsten electrode is smoothly arranged, so that electric arc blow is avoided.
The arrangement of the two supporting sleeves facilitates the adjustment of the direction and the advance and retreat distance of the hot wire channel so as to meet the requirements of the welding of the inner rabbets of different cylinder bottoms.
Drawings
Fig. 1 is a perspective view of the fine cold-compress welding gun for the inner hole with the small and medium aperture of the utility model.
Fig. 2 is a schematic side view of the fine cold-compress welding gun for the inner hole with the small and medium aperture of the present invention.
Fig. 3 is a schematic structural diagram of the lance head of the present invention.
In the figure: 1. a gun head; 2. a gun body outer tube; 3. water-cooling the water inlet pipe; 4. a water-cooling water outlet pipe; 5. an air inlet pipe; 6. a hot wire channel; 7. a support sleeve; 8. fastening a bolt; 9. water-cooling the bent pipe; 11. a high temperature resistant outer cylinder; 12. a high temperature resistant shunt; 13. a tungsten electrode; 14. a shunt network; 15. a screw; 121. an arc-shaped tapered portion; 122. and (5) gas diffusion holes.
Detailed Description
The technical solution of the present invention will be described in further detail through the following embodiments.
As shown in figures 1-3, a small-aperture inner hole fine cold-compress welding gun comprises a gun body, a gun head 1 arranged in front of the gun body and a hot wire channel 6, the lance head 1 comprises a high temperature resistant outer cylinder 11, a high temperature resistant flow divider 12 arranged inside the high temperature resistant outer cylinder 11 and a tungsten electrode 13 arranged inside the high temperature resistant flow divider 12, wherein the high temperature resistant outer cylinder 11 can be made of copper tubes and other materials with good heat resistance, the high temperature resistant shunt 12 can be made of high temperature resistant alloy copper material, the top end of the high temperature resistant outer cylinder 11 is provided with a sealing cover, in order to facilitate disassembly and assembly, the sealing cover is specifically a screw 15, the tip of the tungsten electrode 13 extends out of a through hole formed in the bottom of the high-temperature-resistant shunt 12, the tungsten electrode 13 is used for providing electric arcs, the high-temperature-resistant shunt 12 is used for dispersing protective gas, air flow is uniformly dispersed in a short distance, and the electric arc protection effect is better.
The outer side wall of the upper part of the high-temperature resistant outer barrel 11 is wound with a water-cooling bent pipe 9, a main circuit of the gun head 1 is arranged on the upper part, the water-cooling bent pipe 9 is wound on the position, heat can be dissipated timely, burning is avoided, air inlets corresponding to the positions are formed in the side walls of the middle upper part of the high-temperature resistant outer barrel 11 and the high-temperature resistant diverter 12, the air inlets are distributed under the water-cooling bent pipe 9, on one hand, the positions are more compact, on the other hand, after protective gas enters the high-temperature resistant diverter, the air can be expelled and prevented from remaining; the rifle body includes rifle body outer tube 2, sets up side by side rifle body outer tube 2 inside water-cooling inlet tube 3, water-cooling outlet pipe 4 and intake pipe 5, the pipe wall of water-cooling inlet tube 3 the pipe wall of water-cooling outlet pipe 4 with two liang of contacts of pipe wall of intake pipe 5, the both ends of water-cooling return bend 9 communicate respectively water-cooling inlet tube 3 with water-cooling outlet pipe 4, intake pipe 5 passes communicate behind the inlet port inside high temperature resistant shunt 12, be provided with in the intake pipe 5 and be used for connecting the electrode line of rifle head 1. The water-cooling water inlet pipe 3, the water-cooling water outlet pipe 4 and the water-cooling bent pipe 9 form a water-cooling system, the gun head 1 and an electrode wire of the gun head are cooled in time, burning-out in the working process is avoided, and the air inlet pipe 5 conveys inert gas into the gun head 1 to protect electric arcs.
The hot wire channel 6 is arranged right below the gun body, and the outlet end of the hot wire channel 6 straightly extends to the bottom end of the high-temperature-resistant outer barrel 1, so that the space occupation caused by bending of the outlet end of the hot wire channel 6 is avoided, and the gun head 1 is ensured to be in the minimum size state.
The high-temperature-resistant flow divider 12 comprises an arc-shaped reducing part 121 at the lower part, a plurality of gas scattering holes 122 are uniformly formed in the arc-shaped reducing part 121, a flow dividing net 14 is arranged at the bottom end of the high-temperature-resistant outer cylinder 11, and the bottom end of the arc-shaped reducing part 121 extends out of the flow dividing net 14; after entering the lance head 1, the protective gas flow in the gas inlet pipe 5 passes through the gas dispersion holes 122 and the secondary flow distribution of the flow distribution network 14, so that the uniformity of the protective gas flow is improved in a short distance.
Because the size of the gun head 1 is small, the area proportion occupied by the air inlet holes is relatively high, the protective gas is easy to leak from a gap between the high-temperature-resistant flow divider 12 and the high-temperature-resistant outer cylinder 11, so that the air flow is unstable, in order to avoid the leakage of the protective gas, the middle upper part of the high-temperature-resistant flow divider 12 and the middle upper part of the high-temperature-resistant outer cylinder 11 are in interference fit, specifically, the wall thicknesses of the middle upper part of the high-temperature-resistant flow divider 12 and the middle upper part of the high-temperature-resistant outer cylinder 11.
In order to avoid the blow-off phenomenon, the tip of the tungsten electrode 13 is smoothly arranged, rather than being sharp.
By the arrangement, the whole welding gun is reasonable in structure and compact in layout, and the size of the welding gun reaches 27-40mm, so that the requirement of a small-aperture inner hole with a small aperture can be met, and the welding gun can extend into the small-aperture inner hole to perform welding and material increase.
The surface of the gun body is sleeved with two support sleeves 7, each support sleeve 7 is provided with a fastening bolt 8 corresponding to the gun body, and each support sleeve 7 is provided with a mounting through hole corresponding to the hot wire channel 6; the mounting through holes are circular, and each support sleeve 7 is provided with a channel fastening bolt corresponding to the hot wire channel 6. According to the needs, the direction of the hot wire channel 6 can be adjusted by rotating the support sleeve 7 and the hot wire channel 6, the support sleeve 7 is pushed and pulled, the front and back positions of the outlet end of the hot wire channel 6 can be adjusted, the support sleeve 7 can be fixed by the fastening bolt 8, and the hot wire channel 6 can be fixed by the channel fastening bolt so as to be aligned.
When the welding gun is used specifically, firstly, the direction and the front and rear positions of the hot wire channel 6 are finely adjusted, and the gun head 1 is extended into the small-bore inner hole and is aligned with the welding position; then, inert gas is conveyed to the gun head 1 from the gas inlet pipe 5 to protect electric arcs and metal molten drops, and cooling liquid is input from the water-cooling water inlet pipe 4; and finally, starting a power supply, sending out the preheated welding wire from the hot wire channel 6, melting the welding wire into liquid by the electric arc of the tungsten electrode 3 at high temperature, welding the gun head 1 by adopting a swing welding method, and simultaneously, automatically rotating the middle cylinder until the welding is finished. Tests prove that the welding gun is ideal for forming small-bore inner holes, the material increase is 1.5mm in single-side welding, the flatness is 0.30mm, the inner diameter before welding is 45mm, the inner diameter after welding is 42mm, and the welding forming controllability is high.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (10)
1. The utility model provides a meticulous cold compress welder of small aperture hole which characterized in that: the high-temperature-resistant tungsten electrode heat exchanger comprises a gun body, a gun head and a hot wire channel, wherein the gun head and the hot wire channel are arranged in front of the gun body, the gun head comprises a high-temperature-resistant outer barrel, a high-temperature-resistant shunt arranged inside the high-temperature-resistant outer barrel and a tungsten electrode arranged inside the high-temperature-resistant shunt, a sealing cover is arranged at the top end of the high-temperature-resistant outer barrel, the tip end of the tungsten electrode extends out of a through hole formed in the bottom of the high-temperature-resistant shunt, a water-cooling bent pipe is wound on the outer side wall of the upper part of the high; the hot wire channel is arranged under the gun body, and the outlet end of the hot wire channel straightly extends to the bottom end of the high-temperature resistant outer barrel.
2. The small-aperture inner hole fine cold-compress welding gun according to claim 1, characterized in that: the rifle body includes the rifle body outer tube, sets up side by side inside water-cooling inlet tube, water-cooling outlet pipe and the intake pipe of rifle body outer tube, the pipe wall of water-cooling inlet tube the pipe wall of water-cooling outlet pipe with two liang of contacts of pipe wall of intake pipe, the both ends of water-cooling return bend communicate respectively the water-cooling inlet tube with the water-cooling outlet pipe, the intake pipe passes intercommunication behind the inlet port inside the high temperature resistant shunt.
3. The small-bore inner bore fine cold-compress welding gun according to claim 2, characterized in that: and an electrode wire used for connecting the gun head is arranged in the air inlet pipe.
4. A small bore hole fine cold welding gun according to any one of claims 1 to 3, characterized in that: the high-temperature-resistant diverter comprises an arc-shaped gradually-reducing part below the diverter, and a plurality of gas scattering holes are uniformly formed in the arc-shaped gradually-reducing part.
5. The small-aperture inner-hole fine cold-compress welding gun according to claim 4, characterized in that: and the middle upper part of the high-temperature-resistant shunt is in interference fit with the middle upper part of the high-temperature-resistant outer barrel.
6. The small-aperture inner-hole fine cold-compress welding gun according to claim 5, characterized in that: the bottom end of the high-temperature-resistant outer barrel is provided with a shunt net, and the bottom end of the arc-shaped gradually-reducing part extends out of the shunt net.
7. The small-aperture inner-hole fine cold-compress welding gun according to claim 4, characterized in that: the tip of the tungsten electrode is smoothly arranged.
8. A small bore hole fine cold welding gun according to any one of claims 1, 2, 3, 5, 6 or 7, characterized in that: the surface of the gun body is sleeved with two supporting sleeves, each supporting sleeve is provided with a fastening bolt corresponding to the gun body, and each supporting sleeve is provided with a mounting through hole corresponding to the hot wire channel.
9. The small-bore inner bore fine cold-compress welding gun according to claim 8, characterized in that: the mounting through holes are circular, and each support sleeve is provided with a channel fastening bolt corresponding to the hot wire channel.
10. A small bore hole fine cold welding gun according to any one of claims 1, 2, 3, 5, 6, 7 or 9, characterized in that: the sealing cover is a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920413654.5U CN209830561U (en) | 2019-03-29 | 2019-03-29 | Fine cold-compress welding gun for small-bore inner hole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920413654.5U CN209830561U (en) | 2019-03-29 | 2019-03-29 | Fine cold-compress welding gun for small-bore inner hole |
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| Publication Number | Publication Date |
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| CN209830561U true CN209830561U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920413654.5U Active CN209830561U (en) | 2019-03-29 | 2019-03-29 | Fine cold-compress welding gun for small-bore inner hole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848528A (en) * | 2019-03-29 | 2019-06-07 | 郑州煤机综机设备有限公司 | A kind of fine cold compress welding gun of small-bore inner hole |
-
2019
- 2019-03-29 CN CN201920413654.5U patent/CN209830561U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848528A (en) * | 2019-03-29 | 2019-06-07 | 郑州煤机综机设备有限公司 | A kind of fine cold compress welding gun of small-bore inner hole |
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