CN218694806U - Welding gun - Google Patents

Abstract

The application provides a welding gun, which comprises a gun barrel, a welding gun body and a welding gun body, wherein the gun barrel is provided with an air outlet; the connecting piece is sleeved on the gun barrel; the locking piece is sleeved on the barrel and used for locking the connecting piece; the nozzle is connected to the connecting piece, a communicating cavity is arranged among the nozzle, the connecting piece and the gun barrel, and the communicating cavity is communicated with the outside through an opening of the nozzle; the blocking piece is arranged in the communicating cavity and divides the communicating cavity into a first cavity and a second cavity; the air outlet hole is positioned in the first cavity, and the first cavity is communicated with the outside; the retaining member is located in the second cavity. In above-mentioned technical scheme, the problem that the retaining member contact in the butt welding rifle caused the retaining member to damage is splashed in the reduction of the shutoff piece that sets up, promotes stability and the security that welder used.

Description

Welding gun

Technical Field

The application relates to the field of welding equipment, in particular to a welding gun.

Background

The generation of spatter during arc welding is difficult to avoid, and the spatter is particularly serious in the process of high-current automatic welding. Inside the splash that produces can enter into the nozzle among the arc-welding process, used welder mostly has the shunt at present, splashes to get into the nozzle and easily appears entering into the phenomenon of lock ring department by the gap between nozzle and the shunt, splashes and lock ring contact probably to lead to the lock ring to damage, leads to welder to leak water and damages, influences stability and the security that welder used.

SUMMERY OF THE UTILITY MODEL

The application provides a welder for reduce the arc-welding in-process and splash and enter into the problem that causes the damage to the catch, reduce the condition that welder damaged, promote stability and the security that welder used.

The application provides a welding gun comprising

A barrel with an air outlet;

the connecting piece is sleeved on the gun barrel;

the locking piece is sleeved on the gun barrel and used for locking the connecting piece;

the nozzle is connected to the connecting piece, a communication cavity is arranged among the nozzle, the connecting piece and the gun barrel, and the communication cavity is communicated with the outside through an opening of the nozzle;

the blocking piece is arranged in the communicating cavity and divides the communicating cavity into a first cavity and a second cavity; wherein the content of the first and second substances,

the air outlet is positioned in the first cavity, and the first cavity is communicated with the outside;

the retaining member is located in the second cavity.

In above-mentioned technical scheme, set up the shutoff piece and keep apart the retaining member in the second cavity, reduce and welder outside direct intercommunication, can reduce promptly and weld this in-process and splash and get into retaining member department, cause the problem of retaining member damage with the retaining member contact, reduce welder and appear leaking etc. and damage, promote the security and the stability of use, extension equipment life.

In a specific possible embodiment, the nozzle inner hole is a stepped hole, the blocking piece is located in a second through hole with a larger diameter in the stepped hole, and the blocking piece abuts against or is provided with a gap with a stepped surface of the stepped hole.

The blocking piece is matched with the step surface of the stepped hole, so that the separation effect of the first cavity and the second cavity is better.

In a specific embodiment, the gas outlet hole is located in the first through hole with the smaller diameter in the stepped hole.

The first through hole with the smaller diameter is communicated with the outside of the welding gun, the shielding gas conveyed in the welding process is sprayed out through the first through hole, and the effect of isolating and protecting the welding position is better.

In a specific possible embodiment, the closure is screwed to the barrel.

When the plugging piece is installed, the plugging piece is directly sleeved on the gun barrel and screwed down, and the operation is convenient.

In a particular possible embodiment, the block piece is made of a high temperature resistant ceramic material.

Has better high temperature resistance and is not easy to cause damage due to splash contact.

In a specific possible embodiment, a limiting edge is arranged on one side of the barrel away from the opening of the nozzle; the connector includes:

the insulating joint is sleeved on the gun barrel and is abutted against the limiting edge;

the nozzle joint is sleeved on the insulating joint and forms a cooling cavity for introducing a cooling material with the insulating joint;

the nozzle is in threaded connection with the nozzle joint.

Realize the insulation between nozzle and the barrel, reduce the phenomenon that the outside electric leakage of nozzle appears, play better guard action, simultaneously, set up the cooling chamber between insulating joint and nozzle joint, let in cooling material to the cooling chamber in the in-process of carrying out the welding action and have better cooling effect, guarantee welder's normal use.

In a specific embodiment, the retaining member is threadably connected to the barrel and abuts the insulator fitting and the nosepiece fitting.

When the locking part is installed, the locking part is directly screwed on the gun barrel, and the installation and the operation are convenient.

In a specific embodiment, the locking member comprises a locking ring in threaded connection with the barrel and a limiting part arranged on the locking ring;

the limiting part is at least partially abutted with the nozzle joint.

The limiting part is arranged to be at least partially abutted against the nozzle joint, so that the thickness of the locking ring main body can be reduced, and materials are saved.

In a specific embodiment, the method further comprises:

the adapter is arranged at the end part of the gun barrel, which is positioned in the nozzle;

the conductive nozzle is detachably fixed on the adapter.

The contact tube is convenient to mount and dismount.

In a specific possible embodiment, the distance between the opening of the air outlet and the first cavity communicated with the barrel central axis is greater than or equal to the distance between the adapter and the surface of the contact tip and the barrel central axis.

Under the incomplete amasss has the condition that splashes in first cavity, can be directly insert cleaning equipment by the opening of first cavity, clear up the position of venthole, the operation of clearance is comparatively convenient, reduces to splash and piles up and cause harmful effects to welder's normal use, guarantees welder normal operating stability.

Drawings

FIG. 1 is a schematic structural diagram of a welding gun according to an embodiment of the present disclosure;

fig. 2 is an enlarged schematic view of a portion a in fig. 1 according to an embodiment of the present application.

Description of reference numerals: 1. a barrel; 11. a pipe body; 111. a limiting edge; 12. a contact tip joint; 121. an air outlet; 2. a contact tip; 3. a connecting member; 31. an insulated joint; 32. a nozzle adapter; 4. a locking member; 41. a locking ring; 42. a limiting part; 5. a nozzle; 51. a stepped hole; 52. a first through hole; 53. a second through hole; 6. a blocking member; 7. a communicating cavity; 71. a first cavity; 72. a second cavity.

Detailed Description

The present application is described in further detail below with reference to the figures and examples. The features and advantages of the present application will become more apparent from the description.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not conflict with each other.

In order to facilitate understanding of the welding gun provided by the embodiment of the application, firstly, an application scene of the welding gun is introduced, and the welding gun provided by the embodiment of the application is a common welding structure in the welding field, and mainly comprises a gun barrel, a conductive nozzle arranged at the end part of the gun barrel and a nozzle sleeved outside the gun barrel and the conductive nozzle, wherein the nozzle is in insulation connection with the gun barrel; be equipped with the passageway that is used for wearing to establish the welding wire in barrel and the contact tip, and still be equipped with the air flue that is used for carrying the shielding gas in the barrel, the welding operation in-process, the shielding gas encircles the welding wire periphery and keeps apart with the air. The cover is equipped with the connecting piece on the barrel, and the nozzle passes through the connecting piece to be connected with the barrel insulation, in addition, still is equipped with the catch that is used for locking the connecting piece on the barrel. The embodiment of the application provides a welding gun, and in the arc welding operation process, the problem that the lock ring is damaged by splashing entering the lock ring position is reduced, and the damage condition of the welding gun is reduced. The following detailed description is given with reference to the accompanying drawings and examples.

Referring to fig. 1, fig. 1 shows a schematic structural diagram of a welding gun according to an embodiment of the present application. The welding gun provided by the embodiment of the application comprises a gun barrel 1, a conductive nozzle 2, a connecting piece 3, a locking piece 4, a nozzle 5 and a blocking piece 6; the gun barrel 1 is connected with a preposed welding device, a wire feeding device and the like, and the conductive nozzle 2 is detachably fixed at the port of the gun barrel 1; the connecting piece 3 is sleeved on the barrel 1 and is in sliding fit with the barrel 1, and the locking piece 4 is sleeved on the barrel 1 and is used for locking the position of the connecting piece 3 so that the connecting piece 3 is fixed relative to the barrel 1; the nozzle 5 is a cylindrical structure, the nozzle 5 is sleeved on the connecting piece 3 and is connected with the nozzle 5 through the connecting piece 3, and the contact tip 2 is positioned in the nozzle 5.

Referring to fig. 1 and 2, a communication cavity 7 is formed between the nozzle 5 and the connecting piece 3, the gun barrel 1 and the contact tip 2, the communication cavity 7 is communicated with the outside of the spray gun at the opening of the nozzle 5, and the shielding gas is conveyed into the communication cavity 7 through an air passage and is sprayed out from the opening of the communication cavity 7; the blocking piece 6 is arranged on the gun barrel 1 and divides the communication cavity 7, so that the communication cavity 7 forms a first cavity 71 and a second cavity 72, wherein the first cavity 71 is positioned on one side of the opening of the nozzle 5, and the second cavity 72 is kept in a state of being separated from the outside of the welding gun; and, an air outlet 121 of the barrel 1 is positioned in the first chamber 71 to ensure the shielding gas is output from the first chamber 71, and a locking member 4 is positioned in the second chamber 72.

Realize the separation to intercommunication chamber 7 through setting up shutoff piece 6 on barrel 1, make retaining member 4 keep apart with the outside, in carrying out welding operation in-process, the splashing that produces gets into to first cavity 71 in, shutoff piece 6 through setting up shelters from splashing, can reduce the phenomenon that the entering into to second cavity 72 that splashes appears, be difficult to cause the problem of damage to retaining member 4 promptly, just also be difficult to appear causing welder to leak the scheduling problem because of retaining member 4 damages, promote the security that welder used, and can increase of service life.

Referring to fig. 1, the barrel 1 includes a barrel 11 and a contact tip connector 12 detachably fixed on the barrel 11, and the contact tip connector 12 is provided with an air outlet 121. Exemplarily, this welder still includes the adapter, and the adapter is connected on contact tube connects 12 for installation contact tube 2, wherein, adapter and contact tube connect 12 threaded connection, contact tube 2 also is threaded connection with the adapter, the installation that can be comparatively convenient realization contact tube 2. The contact tip connector 12 and the tube 11 may be connected by a screw, or may be fixed by a snap or the like in other embodiments.

In yet another embodiment, the contact tip 2 is provided to be directly screwed to the contact tip fitting 12. The embodiment of the present application will be described by taking the case where the contact tip 2 is connected to the contact tip connector 12 through an adapter as an example.

Referring to fig. 1, the central axes of the contact tube 2, the adapter, the contact tube connector 12 and the tube 11 are overlapped, and the distance from the surface of the contact tube connector 12 where the air outlet 121 is located to the central axis of the contact tube connector 12 is greater than or equal to the distance from the surface of the adapter and the contact tube 2 to the contact tube connector 12.

It is simply understood that, in a state where a strip structure without deformability is used to extend from the opening of the first cavity 71 into the first cavity 71, the strip structure can directly contact the surface of the contact tip joint 12 where the air outlet is located; the absence of deformability here means that there is no deformation in the ideal state or macroscopically.

Through setting up more than going on, in the welding operation in-process, the condition on the lateral wall in the first cavity 71 is got into and is attached to in the first cavity 71 to splash of production, especially splash and pile up under the condition of venthole 121 department, can use the clearance instrument directly to stretch into and clear up splashing in the first cavity 71, stretch into the clearance instrument to the first cavity 71 under the condition, be difficult to receive and block and cause the clearance inconvenient, or cause to collide with to the internal structure of welding gun, the problem of damage, and simultaneously, it is cleaner to the clearance of splashing in the first cavity 71 also to reduce the condition of sheltering from, the clearance effect is better.

It should be understood, of course, that the present embodiment defines the contact tip fitting 12, the adapter, and the distance relationship between the surface of the contact tip 2 and the central axis of the contact tip fitting 12, which is only one specific embodiment. In practical use, the contact tube connector 12 is located on the surface of the air outlet 121 facing the opening side of the nozzle 5, and the surface of the adapter and the surface of the contact tube 2 have small protrusions, so that the cleaning operation of splashing can be performed only by ensuring that the cleaning tool is not hindered from extending into the first cavity 71.

Referring to fig. 1, the connecting member 3 includes an insulating joint 31 and a nozzle joint 32, wherein the insulating joint 31 is sleeved on the pipe body 11 and is in sliding fit with the pipe body 11, and the insulating joint 31 is made of an insulating material, such as ceramic, mica, quartz, etc.; the nozzle joint 32 is sleeved on the insulating joint 31, and the nozzle 5 is sleeved on the nozzle joint 32 and is in threaded connection with the nozzle joint 32. A cooling cavity is formed between the nozzle joint 32 and the insulating joint 31, and is used for introducing a cooling material into the cooling cavity to cool the spray gun structure, wherein the cooling material is low-temperature gas or cooling liquid for example; in practical use, a sealing ring is arranged between the nozzle joint 32 and the insulating joint 31 to seal a formed cooling cavity so as to reduce the leakage problem of the cooling material.

During installation, the insulating joint 31 is installed on the pipe body 11, the nozzle joint 32 is installed on the insulating joint 31, then the locking piece 4 is installed to lock the insulating joint 31 and the nozzle joint 32, and then the nozzle 5 is screwed on the nozzle joint 32. It is also possible to lock the insulated joint 31 and the nozzle joint 32 using the locking member 4 after the nozzle joint 32 is first mounted on the insulated joint 31 and then the insulated joint 31 and the nozzle joint 32 are simultaneously mounted on the pipe body 11.

The end of the pipe body 11 far away from the opening of the nozzle 5 is provided with a limiting edge 111, the shape of the limiting edge 111 is matched with the shape of the end part of the insulating joint 31, and the insulating joint 31 is tightly abutted against the limiting edge 111 when the insulating joint 31 is installed on the pipe body 11 and locked. Spacing along 111 and body 11 integrated into one piece, and in other embodiments, also can set up spacing along 111 and body 11 and be split type structure, fix through modes such as threaded connection, riveting, welding.

The locking member 4 comprises a locking ring 41 and a limiting part 42 arranged on the locking ring 41, wherein the locking ring 41 is sleeved on the pipe body 11 and is in threaded connection with the pipe body 11, and one end of the locking ring 41, which is far away from the limiting edge 111, of the insulating joint 31 is abutted tightly, so that the locking ring 41 and the limiting edge 111 are matched to clamp the insulating joint 31 to fix the insulating joint 31. The limiting part 42 is located on the lock ring 41 and faces one end of the insulating joint 31, at least part of the limiting part 42 is abutted to the nozzle joint 32, the nozzle joint 32 is positioned, and a gap at the joint of the insulating joint 31 and the nozzle joint 32 is shielded by the limiting part 42.

The locking piece 4 comprises the locking ring 41 and the limiting part 42, so that the thickness of the locking ring 41 can be reduced in practical use, and the material consumption is reduced while the limiting of the insulating joint 31 and the nozzle joint 32 is realized.

Referring to fig. 1 and 2, the blocking member 6 is an annular joint, specifically, referring to the shape of a nut, the blocking member 6 is made of a high temperature resistant ceramic material, and is not easily damaged under the condition of splash contact. The blocking piece 6 is in threaded connection with the pipe body 11, the outer peripheral surface of the blocking piece 6 is abutted against the inner side wall of the nozzle 5, the communicating cavity 7 is separated, and a first cavity 71 and a second cavity 72 are formed.

The blocking piece 6 is used for isolating the locking piece 4 from the outside, so that the problem that the locking piece 4 is damaged due to the fact that splashing in the welding process is in contact with the locking piece 4 can be reduced, the problem that a welding gun is damaged is reduced, the use safety and stability are improved, and the service life of the welding gun is prolonged; in addition, the installation of the plugging piece 6 is convenient, the plugging piece is assembled or replaced during use, and the operation is convenient.

The nozzle 5 has a cylindrical structure, the inner passage thereof is a stepped hole 51, the stepped hole 51 has a first through hole 52 having a small diameter and a second through hole 53 having a large diameter, the closing member 6 is positioned in the second through hole 53, the outer peripheral surface of the closing member 6 abuts against the inner wall of the second through hole 53, and the closing member 6 abuts against the stepped surface of the stepped hole 51. Illustratively, the first through hole 52 is located near one side of the opening of the nozzle 5, i.e., the first through hole 52 corresponds to the first cavity 71; the blocking piece 6 is located in the second through hole 53 and is abutted to the locking ring 41, the tightness and the overall stability of the structure can be improved, and the locking ring 41 is not easy to rotate and deviate to cause the problem that the insulated joint 31 is loosened.

The first through hole 52 with the smaller diameter is arranged at a position communicated with the outside, the protective gas is subsequently conveyed to be sprayed out through the first through hole 52, and compared with the protective gas sprayed out from the second through hole 53 with the larger diameter, the diameter of the spraying position is reduced, so that the protection effect of the annular protective gas on the welding position is better.

In another embodiment, the second through hole 53 may be located at a side close to the opening of the nozzle 5, that is, the larger diameter portion of the nozzle 5 corresponds to the first cavity 71 and communicates with the outside of the welding gun.

Through setting up nozzle 5 hole for shoulder hole 51 to set up the step face butt of shutoff piece 6 and shoulder hole 51, better, more stable to first cavity 71 and second cavity 72's separation effect.

It should be noted that, the plugging member 6 is limited to abut against the inner side wall of the second through hole 53 and the step surface of the stepped hole 51, which is an ideal condition, and in actual production and assembly, due to processing and assembly errors, there may be a small gap between the plugging member 6 and the inner side wall of the second through hole 53 and the step surface of the stepped hole 51, and the first cavity 71 and the second cavity 72 can be separated, so that only the gap between the plugging member 6 and the inner side wall of the second through hole 53 and the step surface of the stepped hole 51 needs to be ensured to limit the splashing.

In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on operational states of the present application, and are only used for convenience in describing and simplifying the present application, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In the description of the present application, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise explicitly specified or limited; in addition, a plurality of the references in the present application is two or more. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

The present application has been described above with reference to preferred embodiments, but these embodiments are merely exemplary and merely illustrative. On the basis of the above, the present application can be subjected to various substitutions and improvements, and the substitutions and the improvements are all within the protection scope of the present application.

Claims (10)

1. A welding gun is characterized by comprising

The gun barrel (1) is provided with an air outlet hole (121);

the connecting piece (3) is sleeved on the gun barrel (1);

the locking piece (4) is sleeved on the barrel (1) and used for locking the connecting piece (3);

the nozzle (5) is connected to the connecting piece (3), a communicating cavity (7) is arranged among the nozzle (5), the connecting piece (3) and the gun barrel (1), and the communicating cavity (7) is communicated with the outside through an opening of the nozzle (5);

the blocking piece (6) is arranged in the communication cavity (7) and divides the communication cavity (7) into a first cavity (71) and a second cavity (72); wherein the content of the first and second substances,

the air outlet hole (121) is positioned in the first cavity (71), and the first cavity (71) is communicated with the outside;

the retaining member (4) is located in the second cavity (72).

2. The welding gun according to claim 1, characterized in that the inner bore of the nozzle (5) is a stepped bore (51), the closure piece (6) is located in a second through hole (53) of the stepped bore (51) with a larger diameter, and the closure piece (6) abuts against or is provided with a gap from the step surface of the stepped bore (51).

3. The welding gun according to claim 2, characterized in that the gas outlet hole (121) is located in the first through hole (52) of the stepped hole (51) having a smaller diameter.

4. The welding gun according to claim 1, characterized in that the closure (6) is screwed to the barrel (1).

5. The welding gun according to claim 1, characterized in that the block piece (6) is made of a high temperature resistant ceramic material.

6. The welding gun according to claim 1, characterized in that the side of the barrel (1) remote from the opening of the nozzle (5) is provided with a stop edge (111); the connector (3) comprises:

the insulating joint (31) is sleeved on the gun barrel (1) and is abutted against the limiting edge (111);

the nozzle joint (32) is sleeved on the insulating joint (31) and forms a cooling cavity for introducing a cooling material with the insulating joint (31);

the nozzle (5) is in threaded connection with the nozzle joint (32).

7. The welding gun according to claim 6, characterized in that the retaining member (4) is in threaded connection with the barrel (1) and that the retaining member (4) abuts against the insulating joint (31) and the nozzle joint (32).

8. The welding gun according to claim 7, characterized in that the locking member (4) comprises a locking ring (41) in threaded connection with the barrel (1) and a limiting portion (42) provided on the locking ring (41);

the limiting part (42) is at least partially abutted with the nozzle joint (32).

9. The welding gun according to claim 1, further comprising:

the adapter is arranged at the end part of the gun barrel (1) positioned in the nozzle (5);

and the conductive nozzle (2) is detachably fixed on the adapter.

10. The welding gun according to claim 9, characterized in that the opening of the gas outlet (121) communicating with the first cavity (71) is at a distance from the middle axis of the barrel (1) which is greater than or equal to the distance between the adapter and the surface of the contact tip (2) and the middle axis of the barrel (1).

Images