CN213945232U

CN213945232U - Welding gun

Info

Publication number: CN213945232U
Application number: CN202022795818.0U
Authority: CN
Inventors: 冯消冰; 陈永; 桂巧; 陈苏云
Original assignee: Beijing Bo Tsing Technology Co Ltd
Current assignee: Beijing Bo Tsing Technology Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-08-13
Anticipated expiration: 2030-11-27

Abstract

The application discloses welder, including barrel structure, electrode and electrode clamp structure, the electrode is connected to the electrode clamp structure, the electrode reaches the electrode clamp structure set up in the barrel structure, wherein, the electrode clamp structure is followed the length direction setting of barrel structure. The gun tube structure is provided with a first cooling cavity, the electrode clamp structure is provided with a second cooling cavity, and the first cooling cavity is not communicated with the second cooling cavity. The utility model provides a first cooling cavity can reduce the temperature of barrel structure, and second cooling cavity can reduce the temperature of electrode clamp structure, is favorable to TIG welder to work for a long time under higher electric current to can improve the penetration ability and the welding stability of electric arc.

Description

Welding gun

Technical Field

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

Background

During the operation of a Tungsten Inert Gas (TIG) welding gun, the temperature of a Tungsten electrode part is extremely high, the Tungsten electrode generates more heat, and in order to maintain the normal operation of the TIG welding gun, the Tungsten electrode and parts around the welding gun need to be rapidly and durably cooled, so that the Tungsten electrode and the parts around the welding gun can be prevented from being burnt and damaged to influence the welding quality.

In the related art, the TIG welding gun uses single-loop water cooling to cool the welding gun. However, the single-circuit water cooling method has a limited cooling effect on the welding torch.

SUMMERY OF THE UTILITY MODEL

Accordingly, the present invention provides a welding gun that at least partially solves the above mentioned problems.

The utility model provides a welding gun, which comprises a gun barrel structure, an electrode and an electrode clamp structure, and is characterized in that the electrode is connected to the electrode clamp structure, the electrode and the electrode clamp structure are arranged in the gun barrel structure, wherein the electrode clamp structure is arranged along the length direction of the gun barrel structure,

the gun tube structure is provided with a first cooling cavity, the electrode clamp structure is provided with a second cooling cavity, and the first cooling cavity is not communicated with the second cooling cavity.

Most preferably, the barrel structure includes a first partition, an outer sidewall and an inner sidewall,

the inner side wall is arranged in the outer side wall, and the second end part of the inner side wall is flush with the second end part of the outer side wall,

the first end portion of the inner side wall and the first end portion of the outer side wall extend toward each other until the inner side wall is connected to the outer side wall, so that a space between the inner side wall and the outer side wall constitutes the first cooling cavity,

the first baffle disposed between the inner sidewall and the outer sidewall, the first baffle connecting the inner sidewall and the outer sidewall to divide the first cooling cavity into a first portion and a second portion,

the first cooling liquid, which enters from the first portion, can flow out from the second portion,

wherein the electrode clamp structure and the electrode are located in the inner side wall.

In an optimal way, the cross section of the outer side wall and the cross section of the inner side wall are both circular, the axis of the outer side wall is coincident with the axis of the inner side wall,

the first end of the outer side wall extends toward the first end of the inner side wall such that the nozzle of the barrel is necked.

As an achievable optimum, the first partition is arranged symmetrically with respect to the axis of the inner or outer side wall such that the volume of the first section and the volume of the second section are equal.

And most preferably, the electrode clamp structure is cylindrical,

forming an electrode cavity extending in an axial direction at a first end of the electrode clamp structure, the electrode cavity for receiving the electrode;

a second cooling cavity extending in the axial direction is formed from a second end of the electrode clamp structure, wherein the electrode cavity is not in communication with the second cooling cavity,

a second partition plate is arranged in the second cooling cavity and divides the second cooling cavity into a third part and a fourth part,

the second coolant, which enters from the third portion, can flow out from the fourth portion.

As an optimal way to realize, the inner surface of the second cavity is coated with an insulating layer.

As an implementation optimization mode, the cross section of the second cooling cavity is circular, and the second partition plate is arranged at the axial position of the second cooling cavity, so that the volume of the third part is equal to the volume of the fourth part.

As an achievable optimum, the electrode is screwed to the second electrode chamber.

The above scheme provided by the application has at least one of the following beneficial technical effects:

the first cooling cavity can reduce the temperature of a gun barrel structure, and the second cooling cavity can reduce the temperature of an electrode clamp structure, so that the TIG welding gun can work for a long time under high current, and the penetration capacity and the welding stability of electric arcs can be improved; the first cooling cavity of the gun barrel structure increases the contact area between the gun barrel structure and the first cooling liquid, so that the heat exchange quantity between the gun barrel structure and the first cooling liquid can be increased, and the temperature of the gun barrel structure is effectively reduced; the second cooling cavity of the electrode clamp structure increases the contact area between the electrode clamp structure and the second cooling liquid, so that the heat exchange quantity between the electrode clamp structure and the second cooling liquid can be increased, and the temperature of the electrode clamp structure is effectively reduced.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic illustration of a torch according to an embodiment of the present application;

FIG. 2 is a cross-sectional view taken along the line A-A shown in FIG. 1;

FIG. 3 is a cross-sectional view taken in the direction B-B shown in FIG. 1;

FIG. 4 is an isometric view of FIG. 3;

1. a barrel structure 101, a first cooling chamber 102, a first section 103, a second section 11, an outer side wall 12, an inner side wall 13, a first partition;

2. an electrode clamp structure 201, a second cooling cavity 202, a third part 203, a fourth part 204, an electrode cavity 205 and a second partition plate;

3. and an electrode.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. It should be noted that, for the convenience of description, only the portions relevant to the application are shown in the drawings.

In the description of the present application, it is to be understood that the terms "radial," axial, "" upper "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the present application and simplifying the description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "disposed" and "connected" are to be understood in a broad sense, e.g. either fixedly or detachably or integrally connected: may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1 to 4, a welding gun for non-consumable inert gas welding (TIG) includes a gun barrel structure 1, an electrode holder structure 2, and an electrode 3. Electrode 3 sets up on electrode holder structure 2, and electrode 3 and electrode holder structure 2 set up in barrel structure 1, and wherein, electrode holder structure 2 sets up along barrel structure 1's length direction.

The barrel structure 1 is of a double-thin-wall sandwich structure, a first cooling cavity 101 is arranged between the barrel structure 1 and the double-thin-wall sandwich structure, and first cooling liquid flows in through a first part 102 of the first cooling cavity 101 and flows out through a second part 103, so that the temperature of the barrel structure 1 is reduced; the electrode clamp structure 2 is provided with a second cooling cavity 201, and a second cooling fluid enters through a third portion 202 of the second cooling cavity 201 and exits through a fourth portion 203, so that the temperature of the electrode clamp structure 2 is reduced. The temperature of the gun tube structure 1 and the electrode clamp structure 2 is reduced, so that the TIG welding gun can work for a long time under high current, and the penetration capability, the welding stability and the operability of electric arcs can be improved. It should be noted that the first cooling chamber 101 and the second cooling chamber 201 are not communicated, which is beneficial to sufficiently cool the electrode clamp structure 2 and the gun barrel structure 1.

As best possible, the barrel structure 1 includes a first partition 13, an outer side wall 11 and an inner side wall 12, as shown in fig. 1 and 2. The outer side wall 11 includes a first end portion and a second end portion, and the inner side wall 12 includes a first end portion (a lower end portion as shown in fig. 2) and a second end portion (an upper end portion as shown in fig. 2). Wherein the electrode clamp structure 2 and the electrode 3 are located in the inner sidewall 12.

The inner side wall 12 is disposed within the outer side wall 11, and a second end of the inner side wall 12 is flush with a second end of the outer side wall 11. The first end edge of the outer side wall 11 extends towards the first end edge of the inner side wall 12 until the inner side wall 12 and the outer side wall 11 are connected such that the space between the inner side wall 12 and the outer side wall 11 constitutes a first cooling cavity 101.

As shown in fig. 3 and 4, a first partition 13 is provided between the inner sidewall 12 and the outer sidewall 11 for connecting the inner sidewall 12 and the outer sidewall 11. The two first partitions 13 divide the first cooling chamber 101 into a first portion 102 and a second portion 103, so that the first cooling liquid, which can enter the first cooling chamber 101 from the first portion 102, can flow out of the first cooling chamber 101 from the second portion 103.

In operation, a first cooling fluid enters the first cooling cavity 101 from the first portion 102, the first cooling fluid flowing from the second end of the inner sidewall 12 (outer sidewall 11) to the first end of the inner sidewall 12 (outer sidewall 11); the first cooling fluid flows out of the first cooling cavity 101 from the second portion 103, and flows from a first end of the inner sidewall 12 (outer sidewall 11) to a second end of the inner sidewall 12 (outer sidewall 11). The first cooling liquid may be water or another liquid.

Above-mentioned barrel structure 1's first cooling chamber 101 has increased the area of contact of barrel structure 1 with first coolant liquid, can improve the heat exchange volume between barrel structure 1 and the first coolant liquid, effectively reduces barrel structure 1's temperature.

For further optimization, as shown in fig. 1 and 2, the cross section of the outer side wall 11 and the cross section of the inner side wall 12 are both circular, and the axis of the outer side wall 11 and the axis of the inner side wall 12 are located on the same straight line. The length of the inner side wall 12 is greater than the length of the outer side wall 11 and the first end edge of the outer side wall 11 extends towards the first end edge of the inner side wall 12 until the inner side wall 12 and the outer side wall 11 are connected. The arrangement mode enables the nozzle of the gun barrel structure 1 to be in a necking shape. The reduced mouth shape of the nozzle allows the protective gas flowing out of the nozzle to form a good gas protection layer compared to the expanded mouth shape of the nozzle. It should be noted that the first end of the inner side wall 12 and the first end of the outer side wall 11 constitute the nozzle of the barrel; the "cross-section" here is perpendicular to the length direction of the barrel structure 1.

For further optimization, as shown in fig. 3, the two first partition plates 13 are symmetrically arranged about the axis of the inner side wall 12 (outer side wall 11), so that the first cooling liquid flow rate entering the first portion 102 in unit time is equal to the first cooling liquid flow rate exiting the second portion 103 in unit time, which is beneficial for the first cooling liquid to be in full contact with the first portion 102 and the second portion 103 at the same time, and ensures good cooling effect.

As an optimal way to achieve this, the electrode clamp structure 2 is cylindrical. A second cooling cavity 201 extending in the axial direction is provided at a second end (as shown in the figure, the upper end) of the electrode clamp structure 2, and a second partition plate 205 is provided in the second cooling cavity 201, so that the second cooling liquid can enter and exit the second cooling cavity 201; an electrode chamber 204 extending in the axial direction is provided at a first end of the electrode holder arrangement 2, which electrode chamber 204 is used for the arrangement of the electrode 3. It should be noted that the electrode 3 may be a tungsten electrode, or may be an electrode made of other materials; the second cooling liquid may be water or other liquid.

Specifically, as shown in fig. 2, the electrode clamp structure 2 is a cylinder, a second cooling cavity 201 is formed at a second end of the electrode clamp structure 2, and the cross section of the second cooling cavity 201 is circular. A second partition 205 is disposed in the second cooling cavity 201, dividing the second cooling cavity 201 into a third portion 202 and a fourth portion 203. It should be noted that the "cross section" is perpendicular to the length direction of the electrode clamp structure 2; the electrode holder structure 2 is machined from a conductive material so that the electrodes 3 can be charged. In order to avoid the second cooling liquid from conducting electricity, an insulating coating, for example polyimide, is provided in the second cooling chamber 201.

An electrode chamber 204 is formed at a first end of the electrode holder arrangement 2, which electrode chamber 204 is used for connecting an electrode 3.

In operation, the second cooling fluid enters the second cooling chamber 201 from the third portion 202, i.e. the second cooling fluid flows from the second end of the electrode clamp structure 2 to the first end of the electrode clamp structure 2; the second cooling fluid then flows out of the second cooling cavity 201 from the fourth portion 203, i.e. the second cooling fluid flows from the first end of the electrode clamp structure 2 to the second end of the electrode clamp structure 2.

The second cooling cavity 201 of the electrode clamp structure 2 increases the contact area between the electrode clamp structure 2 and the second cooling liquid, so that the heat exchange amount between the electrode clamp structure 2 and the second cooling liquid can be increased, and the temperature of the electrode clamp structure 2 can be effectively reduced.

For further optimization, the second partition plate 205 is located at the axial position of the second cooling cavity 201, and divides the second cooling cavity 201 into the third portion 202 and the fourth portion 203 which are equal in volume, so that the second cooling liquid can be in full contact with the third portion 202 and the fourth portion 203 at the same time, and a good cooling effect is ensured.

To further optimize the solution, the electrode 3 is screwed into the electrode cavity 204. Specifically, an internal thread is provided in the electrode chamber 204, and the electrode 3 with the external thread is connected with the internal thread of the electrode chamber 204. The heat conduction of electrode 3 to electrode holder structure 2, the heat of electrode holder structure 2 is taken away to the second coolant liquid, and threaded connection has increased electrode 3 and electrode holder structure 2's area of contact, is favorable to the cooling of electrode 3.

The above embodiments are merely illustrative of the technical solutions of the application and not restrictive, and although the present application is described in detail with reference to the embodiments, those of ordinary skill in the art should understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A welding gun comprising a barrel structure, an electrode and an electrode clamp structure, wherein the electrode is connected to the electrode clamp structure, the electrode and the electrode clamp structure are disposed within the barrel structure, wherein the electrode clamp structure is disposed along a length of the barrel structure,

the barrel structure is provided with a first cooling cavity, the electrode clamp structure is provided with a second cooling cavity,

wherein the first cooling cavity and the second cooling cavity are not in communication.

2. The welding gun according to claim 1, wherein the barrel structure includes a first diaphragm, an outer sidewall, and an inner sidewall,

3. The welding gun according to claim 2, wherein the cross-section of the outer sidewall and the cross-section of the inner sidewall are both circular, the axis of the outer sidewall being coincident with the axis of the inner sidewall,

4. The welding gun according to claim 3, wherein the first diaphragm is symmetrically disposed about an axis of the inner sidewall or the outer sidewall such that a volume of the first portion and a volume of the second portion are equal.

5. The welding gun according to any one of claims 1 to 4, characterized in that the electrode holder structure is a cylinder,

a second cooling cavity extending in the axial direction is formed at a second end of the electrode clamp structure, wherein the electrode cavity is not communicated with the second cooling cavity,

6. The welding gun according to claim 5, wherein an inner surface of the second cooling chamber is coated with an insulating layer.

7. The welding gun according to claim 6, wherein the second cooling chamber has a circular cross-section,

the second baffle passes through an axis of the second cooling cavity such that a volume of the third portion and a volume of the fourth portion are equal.

8. The welding gun according to claim 7, wherein the electrode is threaded into the electrode cavity.