CN210878009U

CN210878009U - Welding gun

Info

Publication number: CN210878009U
Application number: CN201921842558.9U
Authority: CN
Inventors: 奚根良; 钱建庆; 王永富
Original assignee: Shanghai Cool Refrigeration Equipment Co ltd
Current assignee: Shanghai Cool Refrigeration Equipment Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-06-30
Anticipated expiration: 2029-10-29

Abstract

The utility model relates to the technical field of welding equipment, and discloses a welding gun, which comprises a gun handle, a welding pipe, a nozzle and an air source interface, wherein the air source interface is connected with an air source steel cylinder through an air pipe, and the nozzle is detachably connected with the welding pipe; the air source interface comprises a fixed sleeve, a movable sleeve and a connecting sleeve; the fixed sleeve is formed at the end part of the gun handle, which is far away from the welded pipe; a first mounting groove is formed in the inner wall of the connecting sleeve and at the end part of the connecting sleeve, which is far away from the fixing sleeve; a second mounting groove with the groove diameter larger than that of the first mounting groove is formed in the inner wall of the connecting sleeve and positioned on one side of the first mounting groove; the fixed sleeve is in threaded connection with the inner wall of the connecting sleeve; the connecting sleeve is sleeved on the movable sleeve; the movable sleeve is fixedly arranged at one end of the air pipe; the movable sleeve comprises a first pipe orifice and a second pipe orifice; the outer side wall of the first pipe orifice is attached to the second mounting groove; the second pipe orifice is arranged at one end of the first pipe orifice and is fixedly connected with the air pipe. The utility model has the advantages of it is following and effect: the connection and sealing performance of the air pipe and the air source interface are good.

Description

Welding gun

Technical Field

The utility model relates to a welding equipment technical field, in particular to welder.

Background

The welding gun is a tool for welding or preheating ferrous metal or nonferrous metal workpieces by using oxygen and medium-low pressure acetylene as heat sources. Is the main tool for gas welding operation. The welding gun is used for uniformly mixing combustible gas and oxygen according to a certain proportion, and spraying the mixture from a nozzle at a certain speed to form flame which has a certain energy rate and a certain component, is suitable for welding requirements and can stably burn. The quality of the welding torch directly affects the welding quality of gas welding, so that the welding torch is required to have good performance of adjusting the ratio of oxygen to combustible gas and the flame energy rate so that the mixed gas is ejected at a speed equal to or greater than the combustion speed to stably combust the flame. Meanwhile, the welding gun is required to be light in weight, and convenient, safe and reliable to operate when in use.

At present, an air source interface of a welding torch is connected with an air source through an air pipe, the air pipe and the air source interface are generally fixed through a hose clamp, and when the welding torch is held by hand to perform welding operation, the air pipe and the air source interface are easy to loosen, so that the air pipe and the air source interface are low in tightness and cause waste of the air source.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a welder that exists to prior art, its trachea is good with being connected the leakproofness of air supply kneck.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a welding gun comprises a gun handle, a welding tube arranged at one end of the gun handle, a nozzle arranged at one end of the welding tube, which is far away from the gun handle, and an air source interface arranged at one end of the gun handle, which is far away from the welding tube, wherein the air source interface is connected with an air source steel cylinder through an air tube, and the nozzle is detachably connected with the welding tube; the air source interface comprises a fixed sleeve, a movable sleeve and a connecting sleeve; the fixed sleeve is formed at the end part of the gun handle, which is far away from the welded pipe, and is communicated with the interior of the gun handle; the movable sleeve is fixedly arranged at one end of the air pipe; the movable sleeve comprises a first pipe orifice and a second pipe orifice; the outer side wall of the first pipe orifice is attached to the wall of the second mounting groove; the second pipe orifice is arranged at one end of the first pipe orifice and is fixedly connected with the air pipe; a first mounting groove is formed in the inner wall of the connecting sleeve and at the end part of the connecting sleeve, which is far away from the fixing sleeve; a second mounting groove with the groove diameter larger than that of the first mounting groove is formed in the inner wall of the connecting sleeve and on one side of the first mounting groove; the fixed sleeve is inserted into one end of the connecting sleeve, which is far away from the movable sleeve, and is in threaded connection with the connecting sleeve; the connecting sleeve is sleeved on the movable sleeve; the outer side wall of the second pipe orifice is attached to the groove wall of the first mounting groove.

Through adopting above-mentioned technical scheme, the connection can be dismantled to nozzle and welded tube, when the welding slag deposit made welder's nozzle to be blockked up on the spout department of nozzle, only need change the nozzle, need not to weld the pipe connection and wholly change, reduction nozzle maintenance's that can be by a wide margin cost, and for wholly changing the nozzle more convenient. Through being fixed in tracheal tip with the movable sleeve, embolia the rear one end pulling that is close to fixed cover with the adapter sleeve from tracheal other end again, screw with fixed cover screw through the one end that is close to fixed cover with the adapter sleeve for the first mouth of pipe is close to the cell wall butt of the orificial one side of second and second mounting groove, and the terminal surface that fixed cover deviates from the stock deviates from the orificial terminal surface butt of second with first mouth of pipe, forms tight sealing connection structure. When the air pipe needs to be detached, the connecting sleeve is rotated reversely, and the air pipe and the welding gun can be detached. Because the tip of trachea and movable sleeve be fixed connection, its is sealed tight, is difficult for revealing, closes soon through adapter sleeve and fixed cover, connects movable sleeve and fixed cover for the trachea can be connected with welder, and the trachea damages to be changed can.

The utility model is further arranged that the end part of the welding pipe deviating from the gun handle is provided with a fixed pipe; one end of the nozzle is provided with a hollow adapter; the adapter comprises a first mounting sleeve, a second mounting sleeve and a third mounting sleeve; the first mounting sleeve is fixed on the outer wall of the nozzle and extends to the nozzle opening away from the nozzle; the second mounting sleeve is formed at one end of the first mounting sleeve, which is far away from the nozzle of the nozzle; the outer diameter of the second mounting sleeve is smaller than that of the first mounting sleeve; the third mounting sleeve is formed at one end of the first mounting sleeve and extends to the spray opening away from the spray nozzle; the inner wall of the third installation sleeve and the outer wall of the second installation sleeve are arranged at intervals, and the inner wall of the third installation sleeve is attached to the outer wall of the fixed pipe.

Through adopting above-mentioned technical scheme, set up fixed pipe and adapter, be favorable to realizing being connected dismantled between welded pipe and the nozzle. Through with second installation cover cartridge in fixed intraduct for the second installation cover is fixed in fixed pipe threaded connection, and simultaneously, the inner wall of third installation cover closely laminates with the outer wall of fixed pipe, and when making fixed pipe be connected with the nozzle, the leakproofness is tight, is favorable to guaranteeing good welding effect.

The utility model is further provided with a groove arranged on the lower end surface of the gun handle; an oxygen adjusting button is arranged in the groove; the axis of the oxygen adjusting button is parallel to the length direction of the gun handle; a fuel gas adjusting button is arranged at one side of the gun handle and close to the oxygen adjusting button; the axis of the gas adjusting knob is vertical to the axis of the oxygen adjusting knob.

Through adopting above-mentioned technical scheme, through the mounted position who changes oxygen adjusting knob and gas adjusting knob for when welding, two adjusting knobs of one-hand operation regulation can be operated, with control welder's firepower size, it is more convenient to operate, and the availability factor is higher.

The utility model is further arranged that the end part of the fixed sleeve deviating from the gun handle is provided with a guide pipe; the lateral wall of stand pipe and the laminating of the orificial inside wall of first mouth of pipe.

Through adopting above-mentioned technical scheme, set up the stand pipe, the area of contact of the fixed cover of increase and movable sleeve for overall structure's leakproofness is higher, in addition, sets the round platform form with the tip that the stand pipe kept away from fixed cover, makes the tip diameter that the stand pipe deviates from fixed cover be less than the tip diameter that the stand pipe is close to fixed cover, and the stand pipe of being convenient for stretches into, and it is more convenient to install.

The utility model is further arranged that the outer side wall of the guide pipe is provided with a clamping groove; a sealing ring is arranged in the clamping groove; the outside of sealing washer and the inside wall butt of first mouth of pipe.

Through adopting above-mentioned technical scheme, set up the sealing washer, the leakproofness of being connected between reinforcing welder and the trachea sets up the draw-in groove, installs the sealing washer in the draw-in groove for the sealing washer installation is more firm, and when the stand pipe stretched into the movable sleeve inside, the sealing washer was difficult for breaking away from.

The utility model discloses further set up to, the week side cladding of welded tube has the stereoplasm insulating layer.

Through adopting above-mentioned technical scheme, the outside compression molding of welding the pipe has the stereoplasm insulating layer, adopts the stereoplasm insulating layer that resistant high temperature nature is strong, and the firm cladding of stereoplasm insulating layer improves the insulating reliability in welding the outside of pipe, and shock-resistant, also difficult work piece of being bumped badly to improve the life of welding the pipe.

The utility model discloses further set up as, the bottom of stock is equipped with a plurality of depressed parts.

Through adopting above-mentioned technical scheme, set up the depressed part, the welder of being convenient for is handed for the stock has the radian of curvature, and it is comfortable to hold the sense, grips laborsavingly.

The utility model discloses further set up to, the cover is equipped with the antiskid cover on the stock.

By adopting the technical scheme, the anti-slip sleeve is arranged, so that the heat insulation performance of the gun handle is improved, and the phenomenon that an operator is scalded by overhigh heat generated at the nozzle when the welding gun is used is avoided; the improved holding of the welding gun is facilitated, so that an operator can stably hold the welding gun for operation, and the safety performance of the welding gun in use is improved.

To sum up, the utility model discloses a beneficial technological effect does:

the end part of the air pipe is fixedly connected with the movable sleeve, so that the air pipe is tightly sealed and is not easy to leak, and the movable sleeve and the fixed sleeve are connected through screwing of the connecting sleeve and the fixed sleeve, so that the air pipe is connected with a welding gun, and the damaged air pipe can be replaced;

the nozzle is detachably connected with the welding pipe, when welding slag is deposited on the nozzle opening of the nozzle to block the nozzle of the welding gun, only the nozzle needs to be replaced, the welding pipe joint does not need to be integrally replaced, the maintenance cost of the nozzle can be greatly reduced, and the nozzle is more convenient to replace compared with the integral nozzle;

the high-temperature-resistant hard insulating layer is compression-molded on the outer side of the welded pipe, so that the hard insulating layer firmly covers the outer side of the welded pipe, the reliability of the insulation on the outer side of the welded pipe is improved, the welded pipe is impact-resistant and is not easily damaged by a workpiece, and the service life of the welded pipe is prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic view of a hard insulating layer mounting structure of the embodiment;

FIG. 3 is a schematic diagram of a connecting head structure according to an embodiment;

FIG. 4 is a schematic structural diagram of an air source interface of an embodiment.

Reference numerals: 1. a gun handle; 11. a recessed portion; 12. an anti-slip sleeve; 13. a groove; 14. an oxygen adjusting button; 15. a gas adjusting knob; 2. welding a pipe; 21. a hard insulating layer; 22. a fixed tube; 3. a nozzle; 4. an air source interface; 41. fixing a sleeve; 411. a guide tube; 412. a card slot; 413. a seal ring; 42. a movable sleeve; 421. a first nozzle; 422. a second orifice; 43. connecting sleeves; 431. a first mounting groove; 432. a second mounting groove; 5. an air tube; 6. an adapter; 61. a first mounting sleeve; 62. a second mounting sleeve; 63. and a third mounting sleeve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, a welding gun comprises a gun handle 1, a welding tube 2 in threaded connection with one end of the gun handle 1, a nozzle 3 fixed at one end of the welding tube 2 away from the gun handle 1, and an air source interface 4 fixed at one end of the gun handle 1 away from the welding tube 2. The gas source interface 4 is connected with a gas source steel cylinder through a gas pipe 5.

The bottom of the pistol grip 1 is provided with a plurality of depressions 11, so that the grip effect is better. The gun handle 1 is sleeved with an anti-slip sleeve 12, so that a welding gun can be conveniently held. The lower terminal surface of stock 1 is seted up flutedly 13, and the recess 13 internal rotation is equipped with oxygen adjusting knob 14, and the axis of oxygen adjusting knob 14 is parallel with the length direction of stock 1, and one side of stock 1 just is close to the position rotation of oxygen adjusting knob 14 and is equipped with gas adjusting knob 15, and the axis of gas adjusting knob 15 is mutually perpendicular with the axis of oxygen adjusting knob 14. The end of the welded tube 2 facing away from the gun handle 1 is formed with a fixed tube 22 communicating with the interior of the welded tube 2. An adapter 6 is fixed at one end of the nozzle 3, and two ends of the adapter 6 are respectively communicated with the nozzle 3 and the fixed pipe 22.

As shown in fig. 2, the welded pipe 2 is coated with a hard insulating layer 21 on the circumferential side, and the hard insulating layer 21 is preferably made of PPS plastic material, which has excellent insulation and heat resistance.

As shown in fig. 3, the adapter 6 includes a first mounting sleeve 61 fixed on the outer wall of the nozzle 3 and extending away from the nozzle opening of the nozzle 3, a second mounting sleeve 62 formed at an end of the first mounting sleeve 61 away from the nozzle opening of the nozzle 3, and a third mounting sleeve 63 formed at an end of the first mounting sleeve 61 and extending away from the nozzle opening of the nozzle 3. The external diameter of second installation cover 62 is less than the external diameter of first installation cover 61, and the external diameter of third installation cover 63 is greater than the external diameter of first installation cover 61 and the inner wall of third installation cover 63 sets up with the outer wall interval of second installation cover 62. The second mounting sleeve 62 is inserted into the fixed pipe 22 and is in threaded connection with the inner wall of the fixed pipe 22, and the inner wall of the third mounting sleeve 63 is attached to the outer wall of the fixed pipe 22.

As shown in fig. 4, the air source port 4 includes a fixing sleeve 41 formed at an end of the gun handle 1 away from the welded pipe 2 (as shown in fig. 1) and communicating with the inside of the gun handle 1, a movable sleeve 42 fixed at an end of the air pipe 5, and a connecting sleeve 43 sleeved on the movable sleeve 42 and having one end thereof in threaded connection with the fixing sleeve 41. Two gas source interfaces 4 are arranged in parallel along the height direction of the gun handle 1, one gas source interface 4 is used for connecting fuel gas, and the other gas source interface 4 is used for connecting oxygen.

The end of the fixing sleeve 41 facing away from the pistol grip 1 is formed with a guide tube 411. A clamping groove 412 is formed in the outer side wall of the guide pipe 411, a circle of clamping groove 412 is arranged along the axis of the guide pipe 411, and a sealing ring 413 is bonded in the clamping groove 412. Set the tip that deviates from fixed cover 41 with stand pipe 411 to the round platform form for the tip diameter that stand pipe 411 deviates from fixed cover 41 is less than the tip diameter that stand pipe 411 is close to fixed cover 41, the entering of the stand pipe 411 of being convenient for, and the installation is more convenient.

A first mounting groove 431 is formed in the inner wall of the connecting sleeve 43 and located at the end of the connecting sleeve 43 away from the fixing sleeve 41, and a second mounting groove 432 with a groove diameter larger than that of the first mounting groove 431 is formed in the inner wall of the connecting sleeve 43 and located at one side of the first mounting groove 431. The outer wall of fixed cover 41 just is located the one end that fixed cover 41 deviates from the stock 1 and taps there is the external screw thread, and the one end that second mounting groove 432 deviates from first mounting groove 431 taps there is the internal screw thread, realizes the inner wall threaded connection of fixed cover 41 and adapter sleeve 43. The movable sleeve 42 includes a first pipe port 421 sleeved in the connecting sleeve 43, and a second pipe port 422 formed at an end of the first pipe port 421 opposite to the fixed sleeve 41. The lateral wall and the second mounting groove 432 of first mouth of pipe 421 are laminated mutually, and the second mouth of pipe 422 deviates from the one end and the trachea 5 fixed connection of first mouth of pipe 421, and the lateral wall and the inner wall of first mounting groove 431 of second mouth of pipe 422 are laminated mutually. The outer side of the seal ring 413 abuts against the inner side wall of the first nozzle 421.

This embodiment is when using, is fixed in trachea 5's tip with movable sleeve 42, can be equipped with the sealed pad of one deck at the outer wall cover of the mouth of pipe 422 of second, locates sealed pad outside with trachea 5's tip cover, and rethread set screw fixes, fills sealed glue in trachea 5 and the mouth of pipe 422's gap. And then the connecting sleeve 43 is pulled to one end close to the fixing sleeve 41 after being sleeved in from the other end of the air pipe 5, one end of the connecting sleeve 43 close to the fixing sleeve 41 is screwed with the fixing sleeve 41 in a threaded manner, so that one side of the first pipe orifice 421 close to the second pipe orifice 422 is abutted to the groove wall of the second mounting groove 432, the end surface of the fixing sleeve 41 departing from the gun handle 1 is abutted to the end surface of the first pipe orifice 421 departing from the second pipe orifice 422, the guide pipe 411 extends into the first pipe orifice 421, and the outer side of the sealing ring 413 is abutted to the inner wall of the first pipe orifice 421, so that a tight. When the air pipe 5 needs to be detached, the connecting sleeve 43 is rotated reversely, so that the air pipe 5 and the welding gun can be detached conveniently, the structure is simple, and the operation is rapid.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a welding gun, includes stock (1), locates welding tube (2) of stock (1) one end, locates welding tube (2) and deviates from nozzle (3) of stock (1) one end, locates air supply interface (4) that stock (1) deviates from welding tube (2) one end, air supply interface (4) are connected characterized by through trachea (5) and air supply steel bottle: the nozzle (3) is detachably connected with the welded pipe (2); the air source interface (4) comprises a fixed sleeve (41), a movable sleeve (42) and a connecting sleeve (43); the fixed sleeve (41) is formed at the end part of the gun handle (1) departing from the welded pipe (2) and is communicated with the interior of the gun handle (1); the movable sleeve (42) is fixedly arranged at one end of the air pipe (5); the movable sleeve (42) comprises a first pipe orifice (421) and a second pipe orifice (422); the outer side wall of the first pipe orifice (421) is attached to the wall of the second mounting groove (432); the second pipe orifice (422) is arranged at one end of the first pipe orifice (421) and is fixedly connected with the air pipe (5); a first mounting groove (431) is formed in the inner wall of the connecting sleeve (43) and at the end part, away from the fixing sleeve (41), of the connecting sleeve (43); a second mounting groove (432) with the groove diameter larger than that of the first mounting groove (431) is formed in the inner wall of the connecting sleeve (43) and on one side of the first mounting groove (431); the fixed sleeve (41) is inserted into one end of the connecting sleeve (43) deviating from the movable sleeve (42) and is in threaded connection with the connecting sleeve (43); the connecting sleeve (43) is sleeved on the movable sleeve (42); the outer side wall of the second pipe orifice (422) is attached to the groove wall of the first mounting groove (431).

2. The welding gun according to claim 1, wherein: a fixed pipe (22) is arranged at the end part of the welding pipe (2) departing from the gun handle (1); one end of the nozzle (3) is provided with a hollow adapter (6); the adapter (6) comprises a first mounting sleeve (61), a second mounting sleeve (62) and a third mounting sleeve (63); the first mounting sleeve (61) is fixed on the outer wall of the nozzle (3) and extends to the nozzle opening away from the nozzle (3); the second mounting sleeve (62) is formed at one end of the first mounting sleeve (61) which is far away from the nozzle of the nozzle (3); the outer diameter of the second mounting sleeve (62) is smaller than that of the first mounting sleeve (61); the third mounting sleeve (63) is formed at one end of the first mounting sleeve (61) and extends to a nozzle opening away from the nozzle (3); the inner wall of the third installation sleeve (63) and the outer wall of the second installation sleeve (62) are arranged at intervals, and the inner wall of the third installation sleeve (63) is attached to the outer wall of the fixed pipe (22).

3. The welding gun according to claim 1, wherein: a groove (13) is formed in the lower end face of the gun handle (1); an oxygen adjusting button (14) is arranged in the groove (13); the axis of the oxygen adjusting button (14) is parallel to the length direction of the gun handle (1); a fuel gas adjusting button (15) is arranged at one side of the gun handle (1) and close to the oxygen adjusting button (14); the axis of the gas adjusting knob (15) is vertical to the axis of the oxygen adjusting knob (14).

4. The welding gun according to claim 1, wherein: a guide pipe (411) is arranged at the end part of the fixed sleeve (41) deviating from the gun handle (1); the outer side wall of the guide pipe (411) is attached to the inner side wall of the first pipe opening (421).

5. The welding gun according to claim 4, wherein: a clamping groove (412) is formed in the outer side wall of the guide pipe (411); a sealing ring (413) is arranged in the clamping groove (412); the outer side of the sealing ring (413) is abutted against the inner side wall of the first pipe opening (421).

6. The welding gun according to claim 1, wherein: the peripheral side of the welding pipe (2) is coated with a hard insulating layer (21).

7. The welding gun according to claim 1, wherein: the bottom of the gun handle (1) is provided with a plurality of concave parts (11).

8. The welding gun according to claim 1, wherein: the gun handle (1) is sleeved with an anti-slip sleeve (12).