Welding gun for argon arc welding

Abstract

The utility model provides a welding gun for argon arc welding, and belongs to the technical field of welding guns. Comprising a welding gun main body and a ceramic nozzle fixed on the welding gun main body, an air inlet pipe is embedded in the welding gun main body, an argon arc welding mechanism is embedded and fixed in the ceramic nozzle, a plurality of air outlet holes are formed in the ceramic nozzle in an annular array mode, and a flow dividing groove communicated with the air outlet holes is formed in the top end of the ceramic nozzle. An air inlet groove connected with the air inlet pipe is formed in the inner wall of the flow dividing groove, and a plurality of heat absorption rings communicated with the air outlet holes are fixedly embedded in the ceramic nozzle. Hydrogen is exhausted from the multiple air outlet holes through the air inlet pipe along the air inlet grooves and the flow dividing grooves to protect a welding point, meanwhile, heat of the inner wall of the heat absorption ring is absorbed and dissipated through the heat dissipation grooves in the flowing process of airflow in the air outlet holes, and heat dissipation of the welding gun is facilitated; and the problem of poor practicability caused by water circulation heat dissipation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding torch technical field, especially in argon arc welding's welding torch. BACKGROUND

[0002] Argon arc welding is a kind of welding technology using argon as shielding gas.Arc welding technology is based on the principle of ordinary electric arc welding, using argon to protect the metal welding material, and through high current to make the welding material melt into liquid on the base material to form a molten pool, so that the welded metal and welding material achieve metallurgical bonding.Due to the continuous supply of argon in high temperature melting welding, the welding material cannot contact with oxygen in the air, thereby preventing the oxidation of the welding material.

[0003] The patent with application number 202223578784.5 discloses an argon arc welding torch, which comprises a water-cooled head, a water inlet hole, a water outlet hole and an air inlet hole are arranged on the front surface of the water-cooled head, an installation hole penetrating through the upper surface and the lower surface of the water-cooled head is further arranged on the water-cooled head, the air inlet hole is in communication with the installation hole, the water inlet hole and the water outlet hole are located on both sides of the installation hole, a first water guide hole and a second water guide hole in communication with the water inlet hole and the water outlet hole respectively are further arranged on the lower surface of the water-cooled head, an installation groove is arranged at the bottom of the installation hole, a gas screen pipe is installed in the installation groove, a cooling block is installed outside the gas screen pipe, an annular water channel cooperating with the first water guide hole and the second water guide hole is arranged on the upper surface of the cooling block, and an air outlet hole is further arranged on the gas screen pipe below the cooling block.

[0004] The above technical solution increases the water inlet hole and the water circulation mechanism to cool the welding torch.However, the water circulation mechanism increases the weight of the welding torch, and the vibration caused by the water flow also affects the stability of the welding torch, and the water circulation mechanism has the risk of water leakage causing short circuit, thereby reducing the practicability of the welding torch.Therefore, the present application provides an argon arc welding torch to meet the needs. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide an argon arc welding torch to solve the problem that the water circulation mechanism increases the weight of the welding torch, and the vibration caused by the water flow also affects the stability of the welding torch, and the water circulation mechanism has the risk of water leakage causing short circuit, thereby reducing the practicability of the welding torch.

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] The utility model provides an argon arc welding's welding torch, including the welding torch main part and the porcelain nozzle fixed on the welding torch main part, install the air inlet pipe in the welding torch main part, the porcelain nozzle inlay fixed has the argon arc welding mechanism, and the porcelain nozzle is opened the multiple gas outlet orifices in the ring array, wherein the top of porcelain nozzle is opened the shunt groove with the multiple gas outlet orifices intercommunication, the inner wall of shunt groove is opened the air inlet groove with air inlet pipe connection, the porcelain nozzle inlay fixed has multiple with the heat absorption ring intercommunication of gas outlet orifice.

[0008] Optionally, the welding torch main body is provided with a power supply wire, and a control button is fixed to the outer wall of the welding torch main body.

[0009] Optionally, a control wire is fixed to the control button and inlaid in one end of the welding main body and connected with the power supply wire.

[0010] Optionally, a long pressure cap is threadedly inserted into the top of the porcelain nozzle, and a protective cover is fixedly installed at the bottom end of the porcelain nozzle.

[0011] Optionally, a plurality of heat dissipation grooves are annularly arranged on the inner wall of the gas outlet orifice, and the heat dissipation grooves are in communication with the heat absorption rings.

[0012] Optionally, the argon arc welding mechanism comprises a flow guide piece and a tungsten needle clamp inlaid in the flow guide piece, and the flow guide piece is fixedly installed in the porcelain nozzle.

[0013] Optionally, a mounting hole is arranged at the center position of the tungsten needle clamp, and the tungsten needle clamp and the flow guide piece are electrically connected with the power supply wire.

[0014] Optionally, a tungsten needle body is inserted into the mounting hole of the tungsten needle clamp, and the tungsten needle body is inlaid in the protective cover.

[0015] Optionally, the bottom end of the tungsten needle body is in a conical structure, and a groove is formed at the top end of the side wall of the tungsten needle body.

[0016] Optionally, a mounting groove is formed on the outer wall of the porcelain nozzle, and an internal hexagonal bolt abutting against the groove is threadedly inserted into the mounting groove.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] In the above scheme, a plurality of gas outlet orifices are formed on the porcelain nozzle, and a plurality of heat absorption rings are inlaid and fixed in the porcelain nozzle. Hydrogen is discharged from the plurality of gas outlet orifices along the air inlet groove and the shunt groove through the air inlet pipe to protect the welding point. At the same time, the heat absorption rings absorb and dissipate the heat of the inner wall in the process of airflow flowing in the gas outlet orifice, which facilitates heat dissipation of the welding torch and avoids the problem of poor practicability caused by water circulation heat dissipation.

[0019] By opening the mounting hole in the tungsten needle clamp, the tungsten needle body is inserted into the mounting hole during installation, and the internal hexagonal bolt in the installation groove is tightened, so that the internal hexagonal bolt abuts against the inner wall of the groove, thereby fixing the tungsten needle body. After the internal hexagonal bolt is unscrewed, the tungsten needle body is pulled out of the mounting hole, which facilitates the installation and disassembly of the tungsten needle body, and improves the convenience of replacing the tungsten needle body. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the application and, together with the description, further serve to explain the principles of the application and to enable a person skilled in the relevant art to implement and use the application.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the welding gun for argon arc welding;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the porcelain nozzle;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the porcelain nozzle;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the tungsten needle body.

[0025] Reference signs:

[0026] 1, welding gun body; 2, power supply wire; 3, air inlet pipe; 4, control wire; 5, control button; 6, long pressure cap; 7, porcelain nozzle; 8, protective cover; 9, tungsten needle body; 10, installation groove; 11, internal hexagonal bolt; 12, air outlet hole; 13, tungsten needle clamp; 14, flow guide; 15, heat absorbing ring; 16, air inlet groove; 17, shunt groove; 18, mounting hole; 19, heat dissipation groove; 20, groove.

[0027] As shown in the drawings, in order to clearly realize the structure of the embodiments of the present application, specific structures and devices are marked in the drawings, but this is only for illustration and is not intended to limit the present application to this specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0028] A welding gun for argon arc welding provided by the present application is described in detail below in combination with the drawings and specific embodiments. It should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and other alternative ways can also be used by those skilled in the art to implement them; and the drawings are only used to more specifically describe the embodiments and are not intended to specifically limit the present application.

[0029] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; for example, "an embodiment," "embodiment," "exemplary embodiment," "several embodiments," and the like can refer to one and the same embodiment or several different embodiments. Furthermore, the terms "comprise", "comprising", "comprises" and "comprising" as well as the terms "include", "including", "includes" and "including" are to be construed in a non-exclusive manner when used herein. Additionally, it is to be understood that references to claims, embodiments, or aspects of the present application are to be construed as including all possible combinations of the individual aspects, embodiments or claims.

[0030] Generally, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; for example, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular or can be used to describe a combination of features, structures or characteristics, depending on the context in which the term is used. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but, alternatively, as allowing for existence of other factors that are not expressly described or shown.

[0031] It is to be understood that the terms "on", "over", and "above" in the present application should be interpreted in the broadest possible way, such that "on" not only means "directly on" but also includes the meaning of "on with intervening features or layers therebetween", and "over" or "above" not only means "over" or "above" but also includes the meaning of "over" or "above" with no intervening features or layers therebetween.

[0032] Furthermore, spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein can be interpreted accordingly.

[0033] As shown in Figure 1 and Figure 2 The embodiment of the present application provides a welding torch for argon arc welding, which comprises a welding torch body 1 and a porcelain nozzle 7 fixed on the welding torch body 1, a gas inlet pipe 3 is embeddedly installed in the welding torch body 1, an argon arc welding mechanism is embeddedly fixed in the porcelain nozzle 7, a plurality of gas outlet holes 12 are arranged in an annular array on the porcelain nozzle 7, a shunt groove 17 is arranged at the top end of the porcelain nozzle 7 and is connected with the plurality of gas outlet holes 12, a gas inlet groove 16 is arranged on the inner wall of the shunt groove 17 and is connected with the gas inlet pipe 3, and a plurality of heat absorption rings 15 are embeddedly fixed in the porcelain nozzle 7 and are connected with the gas outlet holes 12.

[0034] The welding torch body 1 is provided with a power supply wire 2, and the outer wall of the welding torch body 1 is fixedly provided with a control button 5, and the control button 5 is fixedly provided with a control wire 4, the control wire 4 is embedded in one end of the welding torch body and connected with the power supply wire 2, a long pressure cap 6 is threadedly inserted into the top end of the porcelain nozzle 7, and a protective cover 8 is fixedly installed at the bottom end of the porcelain nozzle 7, a plurality of heat dissipation grooves 19 are arranged in an annular array on the inner wall of the gas outlet hole 12, the heat dissipation grooves 19 are communicated with the heat absorption ring 15, and the hydrogen is discharged from the plurality of gas outlet holes 12 along the gas inlet groove 16 and the flow distribution groove 17 through the gas inlet pipe 3 to protect the welding point, and the heat of the inner wall of the heat absorption ring 15 is absorbed and dissipated by the heat dissipation grooves 19 during the flow of the gas flow in the gas outlet hole 12.

[0035] As shown in Figure 3 and Figure 4 , the argon arc welding mechanism comprises a flow guide piece 14 and a tungsten needle clamp 13 which is embedded in the flow guide piece 14, the flow guide piece 14 is fixedly installed in the porcelain nozzle 7, the center position of the tungsten needle clamp 13 is provided with a mounting hole 18, and the tungsten needle clamp 13 and the flow guide piece 14 are electrically connected with the power supply wire 2, a tungsten needle body 9 is fitted into the mounting hole 18 of the tungsten needle clamp 13, the tungsten needle body 9 is embedded in the protective cover 8, the bottom end of the tungsten needle body 9 is in a conical structure, a recess 20 is formed in the top end of the side wall of the tungsten needle body 9, an installation groove 10 is formed in the outer wall of the porcelain nozzle 7, an inner hexagonal bolt 11 which abuts against the recess 20 is threadedly inserted into the installation groove 10, the tungsten needle body 9 is inserted into the mounting hole 18 during installation, and the inner hexagonal bolt 11 is tightened in the installation groove 10, so that the inner hexagonal bolt 11 abuts against the inner wall of the recess 20, thereby fixing the tungsten needle body 9, and the tungsten needle body 9 is pulled out of the mounting hole 18 after the inner hexagonal bolt 11 is loosened.

[0036] The technical scheme of the utility model provides the working principle as follows:

[0037] In use, the tungsten needle body 9 is inserted into the mounting hole 18, and the inner hexagonal bolt 11 in the installation groove 10 is tightened, so that the inner hexagonal bolt 11 abuts against the inner wall of the recess 20, thereby fixing the tungsten needle body 9 and embedding the tungsten needle body 9 in the porcelain nozzle 7, the welding torch body 1 is started by the button, the tungsten needle body 9 heats and melts the welding wire, the hydrogen is discharged from the plurality of gas outlet holes 12 along the gas inlet groove 16 and the flow distribution groove 17 through the gas inlet pipe 3 to protect the welding point, and the heat of the inner wall of the heat absorption ring 15 is absorbed and dissipated by the heat dissipation grooves 19 during the flow of the gas flow in the gas outlet hole 12, thereby facilitating heat dissipation of the welding torch, avoiding the problem of poor practicability caused by water circulation heat dissipation, and facilitating installation and dismounting of the tungsten needle body 9 when the tungsten needle body 9 is dismounted, thereby improving the convenience of replacement of the tungsten needle body 9.

[0038] The utility model covers any alternative, modification, equivalent method and scheme which are made on the essence and range of the utility model. In order to make the public have the thorough understanding of the utility model, the specific details are explained in the following preferred embodiment of the utility model, and the utility model can also be completely understood without the description of these details for the person skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the utility model, the well-known method, process, flow, element and circuit are not explained in detail.

[0039] The above only is the preferred implementation of the utility model, should point out, for the ordinary skill in the art of the present technology, on the premise of not departing from the principle of the utility model, still can make a number of improvement and finish, these improvement and finish also should view as the protection range of the utility model.

Claims

1. An argon arc welding torch characterized by comprising: The utility model provides a welding torch body and the porcelain nozzle fixed on the welding torch body, the gas inlet pipe is installed in the welding torch body, the argon arc welding mechanism is fixed in the porcelain nozzle, and a plurality of gas outlet holes are arranged in the annular array on the porcelain nozzle, wherein a shunt groove is arranged in the top end of the porcelain nozzle and communicated with the plurality of gas outlet holes, a gas inlet groove is arranged in the inner wall of the shunt groove and connected with the gas inlet pipe, and a plurality of heat absorption rings are fixed in the porcelain nozzle and communicated with the gas outlet holes.

2. The argon arc welding torch of claim 1, wherein The power supply wire is arranged in the welding torch body, and the control button is fixed on the outer wall of the welding torch body.

3. The argon arc welding torch of claim 2, wherein The control line is fixed on the control button, and the control line is embedded in one end of the welding body and connected with the power supply wire.

4. The argon arc welding torch of claim 3, wherein The long pressure cap is screwed into the top end of the porcelain nozzle, and the protective cover is fixedly arranged at the bottom end of the porcelain nozzle.

5. The TIG torch of claim 1, wherein, A plurality of heat dissipation grooves are arranged in the inner wall of the gas outlet hole in the annular array, and the heat dissipation grooves are communicated with the heat absorption rings.

6. The TIG torch of claim 3, wherein, The argon arc welding mechanism comprises a flow guide and a tungsten needle clamp embedded in the flow guide, and the flow guide is fixedly arranged in the porcelain nozzle.

7. The TIG torch of claim 6, wherein, The mounting hole is arranged at the center position of the tungsten needle clamp, and the tungsten needle clamp and the flow guide are electrically connected with the power supply wire.

8. The TIG torch of claim 7, wherein, The tungsten needle body is inserted into the mounting hole of the tungsten needle clamp, and the tungsten needle body is embedded in the protective cover.

9. The TIG torch of claim 8, wherein, The bottom end of the tungsten needle body is in a conical structure, and the recess is arranged at the top end of the side wall of the tungsten needle body.

10. The TIG torch of claim 9, wherein, The mounting groove is arranged on the outer wall of the porcelain nozzle, and the inner hexagonal bolt is screwed into the mounting groove and abuts against the recess.

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