Manual welding torch

Abstract

The utility model discloses a manual welding welding gun, comprising a gun body and a conductive nozzle, the gun body comprising a gun barrel and a gun handle connected to the rear end of the gun barrel, a connecting rod is arranged at the front end of the gun barrel, an external thread is arranged at the front end of the connecting rod, a first inner cavity is opened in the connecting rod, a second inner cavity is opened in the conductive nozzle, an inner wall of the conductive nozzle forms an inner thread matching the external thread, so that the conductive nozzle can be threadedly connected to the front end of the connecting rod, and when the conductive nozzle is threadedly connected to the front end of the connecting rod, the first inner cavity and the second inner cavity are interconnected to form a wire feeding channel for the welding wire to pass through, and the conductive nozzle can also be threadedly connected to the welding gun body of an arc welding robot. The conductive nozzle in the manual welding welding gun proposed by the utility model can be adapted to the welding gun of an existing arc welding robot at the same time, is easy to disassemble, and has strong compatibility, so that the conductive nozzle disassembled from the existing arc welding robot can continue to be used in the welding gun of the utility model, giving full play to the performance of the conductive nozzle and saving costs.

Description

Technical Field

[0001] The utility model relates to the technical field of welding guns, in particular to a welding gun for manual welding. Background Art

[0002] In the automobile welding production line, arc welding robots are usually used for welding, supplemented by manual welding for detail processing. The welding guns of arc welding robots and manual welding guns both include conductive nozzles and other components, but the existing arc welding robot welding guns and manual welding guns use conductive nozzles of different sizes and are connected to the conductive nozzles in different ways, resulting in the conductive nozzles on the two welding guns being unable to be used interchangeably and having poor compatibility. Utility Model Content

[0003] The main purpose of the utility model is to provide a manual welding welding gun, aiming to solve the technical problem that the welding gun of the arc welding robot and the manual welding welding gun in the prior art use conductive nozzles of different sizes and use different connection forms to connect the conductive nozzles, resulting in the conductive nozzles on the two welding guns being unable to be used interchangeably and having poor compatibility.

[0004] To achieve the above-mentioned purpose, the manual welding welding gun proposed by the utility model includes a gun body and a conductive nozzle, the gun body includes a gun barrel and a gun handle connected to the rear end of the gun barrel, a connecting rod is arranged at the front end of the gun barrel, the front end of the connecting rod is arranged with an external thread, a first inner cavity is opened in the connecting rod, a second inner cavity is opened in the conductive nozzle, the inner wall of the conductive nozzle forms an internal thread matching the external thread, so that the conductive nozzle can be threadedly connected to the front end of the connecting rod, and when the conductive nozzle is threadedly connected to the front end of the connecting rod, the first inner cavity and the second inner cavity are connected to each other to form a wire feeding channel for the welding wire to pass through, and the conductive nozzle can also be threadedly connected to the welding gun body of an arc welding robot.

[0005] Optionally, the conductive nozzle outer shell is provided with a nozzle, the connecting rod outer shell is provided with an insulating sleeve, and the insulating sleeve is threadedly connected to the nozzle.

[0006] Optionally, a first outer cavity is formed between the connecting rod and the insulating sleeve, a second outer cavity is formed between the conductive nozzle and the nozzle, the first outer cavity and the second outer cavity are interconnected to form an air supply channel, and the gun handle has an air pipe connected to the air supply channel.

[0007] Optionally, a flow diverter is abutted between the conductive nozzle and the nozzle, and the flow diverter is provided with a plurality of flow guide holes spaced apart along the circumferential direction, and the flow guide holes are connected to the air supply channel.

[0008] Optionally, an insulating gasket is provided between the diverter and the nozzle.

[0009] Optionally, a micro switch is installed in the gun handle, and a trigger is movably connected to the gun handle, and the trigger is connected to the micro switch.

[0010] Optionally, the micro switch is connected to the trigger via a movable rod, the movable rod can move relative to the gun handle, and a return spring is provided on the outer sleeve of the movable rod, and the return spring is connected between the micro switch and the trigger.

[0011] Optionally, the gun handle includes a front gun shell and a rear gun shell, the front end of the front gun shell is connected to the rear end of the gun barrel, the rear end of the front gun shell and the front end of the rear gun shell are both provided with a spring sheath, and the two spring sheaths are connected to each other and are jointly sleeved outside the cable of the welding gun.

[0012] Optionally, the cross-sectional area of ​​the conductive nozzle gradually decreases from its rear end to its front end.

[0013] Optionally, the external thread diameter of the connecting rod is M8.

[0014] In the manual welding gun proposed by the utility model, the conductive nozzle is threadedly connected to the gun barrel, and the conductive nozzle is consistent in size with the welding gun body of the arc welding robot, so that the conductive nozzle of the manual welding gun proposed by the utility model can also be threadedly connected to the welding gun body of the arc welding robot, which is convenient to disassemble and has good compatibility. When the conductive nozzle connected to the arc welding robot is slightly worn, the conductive nozzle can be disassembled and threadedly connected to the manual welding gun body proposed by the utility model for continued use, thereby extending the service life of a single conductive nozzle, giving full play to the performance of the conductive nozzle, and effectively saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of a welding gun for manual welding according to an embodiment of the utility model;

[0017] Figure 2 The figure is a schematic diagram of the exploded structure of a welding gun for manual welding according to an embodiment of the utility model.

[0018] Description of Figure Numbers:

[0019] Label name Label name 10 Contact Tip 30 Grip 20 barrel 31 Micro Switch 21 Connecting rod 32 trigger 22 nozzle 33 Activity rod 23 Insulation sleeve 34 Front gun shell 24 Shunt 35 Rear gun shell 25 Insulation washers 36 Spring sheath

[0020] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0025] The utility model provides a manual welding welding gun, comprising a gun body and a conductive nozzle 10, wherein the gun body comprises a gun barrel 20 and a gun handle 30 connected to the rear end of the gun barrel 20, a connecting rod 21 is arranged at the front end of the gun barrel 20, an external thread is arranged at the front end of the connecting rod 21, a first inner cavity is opened in the connecting rod 21, a second inner cavity is opened in the conductive nozzle 10, an inner wall of the conductive nozzle 10 forms an internal thread matching the external thread, so that the conductive nozzle 10 can be threadedly connected to the front end of the connecting rod 21, and when the conductive nozzle 10 is threadedly connected to the front end of the connecting rod 21, the first inner cavity and the second inner cavity are interconnected to form a wire feeding channel for the welding wire to pass through, and the conductive nozzle 10 can also be threadedly connected to the welding gun body of an arc welding robot.

[0026] like Figure 1 and Figure 2 As shown, the connecting rod 21 is arranged at the front end of the barrel 20, and the conductive nozzle 10 cooperates with the external thread at the front end of the connecting rod 21 through the internal thread at the rear end thereof, so that the conductive nozzle 10 is threadedly connected to the barrel 20, and the first inner cavity in the connecting rod 21 and the second inner cavity in the conductive nozzle 10 are connected to each other to form a wire feeding channel. In addition, the front end of the welding gun body of the existing arc welding robot is provided with an external thread, and the internal thread of the conductive nozzle 10 matches the external thread size of the arc welding robot gun body, so that the conductive nozzle 10 can be threadedly connected to the welding gun body of the arc welding robot. It is worth noting that due to the use restrictions of the arc welding robot, it is difficult to adjust the welding angle according to the different welding parts, so that the arc welding robot has higher requirements for the accuracy of the conductive nozzle 10, and the conductive nozzle 10 needs to be replaced when it is slightly worn; while manual welding is manually operated, and the welding quality can be ensured by adjusting the welding angle when the conductive nozzle 10 is slightly worn, so that the manual welding welding gun has relatively low requirements for the accuracy of the conductive nozzle 10.

[0027] In the manual welding gun proposed by the utility model, the conductive nozzle 10 is threadedly connected to the gun barrel 20, and the conductive nozzle 10 is consistent with the size of the welding gun body of the arc welding robot, so that the conductive nozzle 10 of the manual welding gun proposed by the utility model can also be threadedly connected to the welding gun body of the arc welding robot, which is convenient to disassemble and has good compatibility. When the conductive nozzle 10 connected to the arc welding robot is slightly worn, the conductive nozzle 10 can be disassembled and threadedly connected to the manual welding gun body of the utility model for continued use, thereby extending the service life of a single conductive nozzle 10, giving full play to the performance of the conductive nozzle 10, and effectively saving costs.

[0028] In one embodiment, the contact tip 10 is provided with a nozzle 22 , the connecting rod 21 is provided with an insulating sleeve 23 , and the insulating sleeve 23 is threadedly connected to the nozzle 22 .

[0029] It can be understood that the nozzle 22 is sleeved outside the conductive nozzle 10 and is spaced from the conductive nozzle 10, and a second outer cavity is formed between the nozzle 22 and the conductive nozzle 10. During welding, the shielding gas flows through the second outer cavity and is ejected from the nozzle 22 toward the outside of the welding gun. The nozzle 22 can guide the shielding gas flow in the second outer cavity to prevent the front end of the welding wire from contacting the air and affecting the welding quality. The insulating sleeve 23 is sleeved outside the connecting rod 21 and is spaced from the connecting rod 21. The insulating sleeve 23 can reduce the current conducted to the outside of the welding gun during welding, improve the safety of the welding process, and the front end of the insulating sleeve 23 is threadedly connected to the nozzle 22, so that the insulating sleeve 23 and the nozzle 22 are easy to load and unload.

[0030] In one embodiment, a first outer cavity is formed between the connecting rod 21 and the insulating sleeve 23, a second outer cavity is formed between the conductive nozzle 10 and the nozzle 22, the first outer cavity and the second outer cavity are interconnected to form an air supply channel, and the gun handle 30 has an air pipe connected to the air supply channel.

[0031] Furthermore, the connecting rod 21 is threadedly connected with the conductive nozzle 10 to form an inner layer, and the insulating sleeve 23 is threadedly connected with the nozzle 22 to form an outer layer. A gas supply channel for the protective gas to flow is formed between the inner layer and the outer layer, and the rear end of the gas supply channel is connected to the gas pipe on the gun handle 30 to supply gas to the gas supply channel. The front end of the gas supply channel is located close to the front end of the wire feeding channel, so that when the welding wire extends from the wire feeding channel, the protective gas in the gas supply channel provides protection to the welding wire, preventing the welding wire from contacting with the air, and preventing the welding wire from being oxidized or contacting with impurities to affect the welding quality.

[0032] In one embodiment, a flow divider 24 is abutted between the contact tip 10 and the nozzle 22 . The flow divider 24 is provided with a plurality of flow guide holes spaced apart along the circumferential direction, and the flow guide holes are communicated with the air supply channel.

[0033] It can be understood that the inner wall of the diverter 24 abuts against the conductive tip 10, and the outer wall of the diverter 24 abuts against the nozzle 22, so that the body of the diverter 24 blocks the gas supply channel, and the shielding gas in the gas supply channel flows through the multiple guide holes on the diverter 24. The multiple guide holes are evenly spaced along the annular direction of the diverter 24, so that the shielding gas is evenly distributed at the front end of the nozzle 22 after being diffused through the multiple guide holes, thereby optimizing the flow direction and distribution of the shielding gas, providing sufficient protection for the welding wire and the welding area of ​​the welded part, and effectively ensuring the welding quality.

[0034] In one embodiment, an insulating gasket 25 is provided between the flow divider 24 and the nozzle 22 .

[0035] Furthermore, the insulating gasket 25 isolates the electrical connection between the diverter 24 and the nozzle 22, preventing the current on the conductive tip 10 from flowing to the nozzle 22 through the diverter 24, avoiding leakage, and thus ensuring the safety of the welding personnel. In addition, the insulating gasket 25 can also provide mechanical support and buffering between the diverter 24 and the nozzle 22, preventing the diverter 24 and the nozzle 22 from being damaged by impact, and extending the service life of the welding gun. It can be explained that in order to improve the insulation effect, the diverter 24 is made of an insulating material.

[0036] In one embodiment, a micro switch 31 is installed in the gun handle 30 , and a trigger 32 is movably connected to the gun handle 30 , and the trigger 32 is connected to the micro switch 31 .

[0037] It can be explained that the micro switch 31 is installed in the gun handle 30 and is used to control the on and off of the circuit in the gun handle 30. The trigger 32 is connected to the gun handle 30 and can move relative to the gun handle 30. The micro switch 31 is triggered by pressing the trigger 32 to conduct the circuit in the gun handle 30, so that the welding gun can perform welding; when the trigger 32 is released, the circuit is disconnected, and the welding of the welding gun stops, thereby preventing the welding gun from continuing to work inadvertently, ensuring the safety and reliability of the welding gun.

[0038] In one embodiment, the micro switch 31 is connected to the trigger 32 via a movable rod 33 . The movable rod 33 can move relative to the gun handle 30 . A return spring is disposed on the outer sleeve of the movable rod 33 . The return spring is connected between the micro switch 31 and the trigger 32 .

[0039] Furthermore, the movable rod 33 is connected between the microswitch 31 and the trigger 32, and the return spring is also connected between the microswitch 31 and the trigger 32. By pressing the trigger 32, the movable rod 33 is driven to move and squeeze the return spring, and the action of the trigger 32 is transmitted to the microswitch 31 through the movable rod 33 to trigger the microswitch 31; when the trigger 32 is released, the return spring drives the trigger 32 and the movable rod 33 to reset, so as to close the microswitch 31, thereby preventing the welding gun from continuing to work inadvertently, thereby improving the safety of the welding gun.

[0040] In one embodiment, the gun handle 30 includes a front gun housing 34 and a rear gun housing 35, the front end of the front gun housing 34 is connected to the rear end of the barrel 20, the rear end of the front gun housing 34 and the front end of the rear gun housing 35 are both provided with a spring sheath 36, and the two spring sheaths 36 are connected to each other and are jointly sheathed outside the cable of the welding gun.

[0041] It can be understood that the front gun housing 34 and the rear gun housing 35 are connected to each other through two spring sheaths 36, and the two spring sheaths 36 are together sheathed outside the cable, and the spring sheaths 36 provide protection for the cable to prevent the cable from being worn or damaged during the welding process. In addition, the spring sheath 36 has a certain elasticity and flexibility, so that the cable can have a certain activity space in the gun handle 30, and will not be excessively twisted due to the movement or vibration of the welding gun, thereby extending the service life of the cable.

[0042] In one embodiment, the cross-sectional area of ​​the contact tip 10 gradually decreases from the rear end to the front end thereof.

[0043] It can be explained that the conductive nozzle 10 is tapered toward the front end, so that the front end of the conductive nozzle 10 can better concentrate the welding heat, melt the welding wire faster and form a weld, thereby shortening the welding time, improving the welding efficiency, and improving the welding accuracy, and minimizing the thermal damage to other parts of the weldment.

[0044] In one embodiment, the external thread diameter of the connecting rod 21 is M8.

[0045] Specifically, the external thread of the connecting rod 21 and the internal thread of the conductive nozzle 10 both adopt the M8 specification, and the external thread of the welding gun of the existing arc welding robot adopts the M8 specification, so that the conductive nozzle 10 can be simultaneously applicable to the manual welding welding gun proposed in the utility model and the welding gun of the existing arc welding robot, and has good compatibility. When the conductive nozzle 10 connected to the arc welding robot is slightly worn, the conductive nozzle 10 can be disassembled and threadedly connected to the manual welding welding gun body proposed in the utility model for continued use, thereby extending the service life of a single conductive nozzle 10, giving full play to the material properties of the conductive nozzle 10, and effectively saving material costs.

[0046] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A manual welding gun, characterized in that: The welding gun includes a gun body and a conductive nozzle, the gun body includes a gun barrel and a gun handle connected to the rear end of the gun barrel, a connecting rod is provided at the front end of the gun barrel, the front end of the connecting rod is provided with an external thread, a first inner cavity is provided in the connecting rod, a second inner cavity is provided in the conductive nozzle, an inner wall of the conductive nozzle forms an internal thread matching the external thread, so that the conductive nozzle can be threadedly connected to the front end of the connecting rod, and when the conductive nozzle is threadedly connected to the front end of the connecting rod, the first inner cavity and the second inner cavity are interconnected to form a wire feeding channel for the welding wire to pass through, and the conductive nozzle can also be threadedly connected to the welding gun body of an arc welding robot.

2. The manual welding gun according to claim 1, characterized in that: The outer shell of the conductive nozzle is provided with a nozzle, the outer shell of the connecting rod is provided with an insulating sleeve, and the insulating sleeve is threadedly connected with the nozzle.

3. The manual welding gun according to claim 2, characterized in that: A first outer cavity is formed between the connecting rod and the insulating sleeve, a second outer cavity is formed between the conductive nozzle and the nozzle, the first outer cavity and the second outer cavity are connected to each other to form an air supply channel, and the gun handle has an air pipe connected to the air supply channel.

4. The manual welding gun according to claim 3, characterized in that: A flow diverter is abutted between the conductive nozzle and the nozzle, and a plurality of flow guide holes spaced along the annular direction are provided on the flow diverter, and the flow guide holes are communicated with the air supply channel.

5. The manual welding gun according to claim 4, characterized in that: An insulating gasket is provided between the diverter and the nozzle.

6. The manual welding gun according to any one of claims 1 to 5, characterized in that: A micro switch is installed in the gun handle, and a trigger is movably connected to the gun handle, and the trigger is connected to the micro switch.

7. The manual welding gun according to claim 6, characterized in that: The micro switch is connected to the trigger through a movable rod, the movable rod can move relative to the gun handle, and a return spring is arranged on the outer sleeve of the movable rod, and the return spring is connected between the micro switch and the trigger.

8. The manual welding gun according to any one of claims 1 to 5, characterized in that: The gun handle comprises a front gun shell and a rear gun shell, the front end of the front gun shell is connected to the rear end of the gun barrel, the rear end of the front gun shell and the front end of the rear gun shell are both provided with a spring sheath, and the two spring sheaths are connected to each other and are jointly sheathed outside the cable of the welding gun.

9. The manual welding gun according to any one of claims 1 to 5, characterized in that: The cross-sectional area of ​​the conductive nozzle gradually decreases from the rear end to the front end.

10. The manual welding gun according to any one of claims 1 to 5, characterized in that: The external thread diameter of the connecting rod is M8.

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