Pipeline welding gun

Abstract

The utility model relates to a pipeline welding gun which comprises a gun head, the gun head is connected and communicated with an oxygen pipe and an argon pipe, the oxygen pipe and the argon pipe are each provided with a ball valve, and each ball valve comprises a valve body installed on the oxygen pipe or the argon pipe and a ball body rotationally arranged in the valve body; a driving rod and a linkage rod are coaxially fixed to the two sides of the ball body, the driving rod and the linkage rod both penetrate through the valve body and extend out of the valve body, the linkage rod on the oxygen pipe and the linkage rod on the argon pipe are oppositely arranged, linkage gears are arranged on the linkage rods, the linkage gears on the linkage rod on the oxygen pipe and the linkage rod on the argon pipe are meshed with each other, and the number of teeth of the two linkage gears is different. The device has the effect of conveniently controlling the ratio of argon to oxygen.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pipeline welding equipment, in particular to a pipeline welding torch. BACKGROUND

[0002] In the pipeline welding process, argon as a protective gas plays a crucial role in the quality of welding.

[0003] The existing welding torch usually sets an argon pipeline on the torch head to supply argon to the torch head through the argon pipeline, thereby playing a protective role on welding. However, the control of the amount of argon entering the existing welding torch is not accurate enough, and the proportion of argon and oxygen cannot be accurately controlled, which may easily lead to unstable welding quality. SUMMARY

[0004] In order to facilitate the control of the proportion of argon and oxygen, the present application provides a pipeline welding torch.

[0005] The pipeline welding torch provided by the present application adopts the following technical solution:

[0006] A pipeline welding torch comprises a torch head, an oxygen pipeline and an argon pipeline connected and communicated with the torch head, and a ball valve installed on each of the oxygen pipeline and the argon pipeline. The ball valve comprises a valve body installed on the oxygen pipeline or the argon pipeline and a ball body rotatably arranged in the valve body. Drive rods and linkage rods are coaxially fixed on both sides of the ball body, and the drive rods and the linkage rods both extend out of the valve body. The linkage rods on the oxygen pipeline and the argon pipeline are arranged oppositely, and linkage gears are arranged on the linkage rods. The linkage gears on the linkage rods of the oxygen pipeline and the argon pipeline are meshed with each other, and the number of teeth of the two linkage gears is different.

[0007] By adopting the above technical solution, the linkage gears meshed with each other are used to realize the synchronous opening and closing of the oxygen pipeline and the argon pipeline, and the number ratio of the two linkage gears is used to realize the opening of the two ball valves according to the proportion, thereby realizing the control of the proportion of oxygen and argon, facilitating the control of the proportion of argon and oxygen, and improving the stability of the welding quality.

[0008] Optionally, the linkage gears are detachably arranged on the linkage rods.

[0009] By adopting the above technical solution, the linkage gears with different number ratios can be replaced by detaching, so as to adjust the proportion of oxygen and argon.

[0010] Optionally, a handle is installed on the drive rod.

[0011] By adopting the above technical solution, the handle is arranged to facilitate the rotation of the ball body.

[0012] Optionally, a handle is arranged on the torch head, and the oxygen pipeline and the argon pipeline are inserted into and extend through the handle away from the torch head.

[0013] By adopting the above technical solution, the setting of the handle can facilitate the gripping of the welding gun on the one hand, and on the other hand, it can fix the oxygen tube and the argon tube, limit the movement of the oxygen tube and the argon tube, and reduce the probability of the oxygen tube and the argon tube moving and bending.

[0014] Optionally, a gripping groove is provided on the handle.

[0015] By adopting the above technical solution, the provision of the gripping groove can improve the comfort of gripping the handle.

[0016] Optionally, the oxygen tube and the argon tube are both provided with quick connectors through one end of the handle.

[0017] By adopting the above technical solution, the provision of the quick connector enables the oxygen tube and the argon tube to quickly replace the corresponding gas sources, thereby facilitating the replacement of the gas sources.

[0018] Optionally, a mounting platform is provided on the gun head, and a light reduction cover is detachably mounted on the mounting platform.

[0019] By adopting the above technical solution, the setting of the shielding cover can reduce the impact of strong light on the operator during welding.

[0020] Optionally, a plurality of fill lights are installed on the side of the mounting platform facing the welding gun head.

[0021] By adopting the above technical solution, the setting of the fill light can provide light when the light is poor, making it convenient to weld in areas with poor light.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The oxygen and argon pipes are opened and closed synchronously through the intermeshing linkage gears. The two ball valves can be opened proportionally through the gear ratio of the two linkage gears, thereby controlling the ratio of oxygen and argon, making it easier to control the ratio of argon and oxygen and improving the stability of welding quality.

[0024] 2. The ratio of oxygen and argon can be adjusted by disassembling and replacing linkage gears with different gear ratios;

[0025] 3. The setting of the grip can not only facilitate the grip of the welding gun, but also fix the oxygen tube and argon tube, limit the movement of the oxygen tube and argon tube, and reduce the probability of movement and bending of the oxygen tube and argon tube;

[0026] 4. The setting of the shield can reduce the impact of strong light on the operator during welding;

[0027] 5. The fill light setting can provide light when the light is poor, making it convenient for welding in areas with poor light. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of this embodiment.

[0029] Figure 2 It is a schematic diagram of the overall structure of this embodiment from another perspective.

[0030] Explanation of the accompanying reference numerals: 1. Gun tip; 2. Oxygen tube; 3. Argon tube; 4. Ball valve; 41. Valve body; 42. Sphere; 5. Through hole; 6. Drive rod; 7. Linkage rod; 8. Linkage gear; 9. Turn handle; 10. Grip; 11. Gripping groove; 12. Quick connector; 13. Mounting platform; 14. Light reduction cover; 15. Fill light. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-2 This application is described in further detail.

[0032] The present application embodiment discloses a pipeline welding gun, referring to Figure 1 , including a gun head 1, the gun head 1 is connected and communicated with an oxygen tube 2 and an argon tube 3, the oxygen tube 2 is used to connect to the oxygen source at one end away from the gun head 1, and the argon tube 3 is used to connect to the argon source at one end away from the gun head 1, and a ball valve 4 is installed on both the oxygen tube 2 and the argon tube 3, the ball valve 4 includes a valve body 41 installed on the oxygen tube 2 or the argon tube 3 and a sphere 42 rotatably arranged in the valve body 41, a through hole 5 is provided on the sphere 42, and the size of the through hole 5 opened in the valve body 41 is adjusted by rotating the ball 42, thereby controlling the gas flow in the valve body 41, and a drive rod 6 and a linkage rod 7 are coaxially fixed on both sides of the sphere 42, and the drive rod 6 and the linkage rod 7 both extend through the valve body 41 Outlet valve body 41, the linkage rods 7 on the oxygen tube 2 and the argon tube 3 are arranged facing each other, and the linkage gears 8 are detachably installed on the linkage rods 7 by bolts. The linkage gears 8 on the linkage rod 7 of the oxygen tube 2 and the linkage rod 7 of the argon tube 3 are meshed with each other. The two linkage gears 8 have different numbers of teeth, and different gear ratios are formed by the different numbers of teeth. When the ball 42 in one of the valve bodies 41 rotates, the linkage rod 7 cooperates with the linkage gear 8 to synchronously rotate the ball 42 in the other valve body 41 according to the gear ratio, so that the two ball valves 4 can be opened according to the ratio, thereby realizing the control of the ratio of oxygen and argon, facilitating the control of the ratio of argon and oxygen, and improving the stability of welding quality.

[0033] Reference Figure 1 A turning handle 9 is installed on the driving rod 6. The setting of the turning handle 9 facilitates the rotation of the driving ball 42. By rotating the ball valve 4 with a small number of teeth, the through hole 5 in the valve body 41 can be opened to a large extent, thereby facilitating the rapid opening of the through hole 5 inside the valve body 41. By rotating the ball valve 4 with a large number of teeth, the through hole 5 in the valve body 41 can be opened to a small extent, thereby facilitating the fine adjustment of the opening amount of the through hole 5 inside the valve body 41.

[0034] Reference Figure 1 A grip 10 is provided on the gun head 1, and the grip 10 is connected to the gun head 1 through the oxygen tube 2 and the argon tube 3. The ends of the oxygen tube 2 and the argon tube 3 away from the gun head 1 are inserted into and pass through the grip 10, and the grip 10 provides fixation for the ends of the oxygen tube 2 and the argon tube 3 away from the gun head 1, thereby reducing the probability of the oxygen tube 2 and the argon tube 3 being moved and bent by external force, and also provides a gripping area for the welding gun; a gripping groove 11 is provided on the grip 10, and the provision of the gripping groove 11 can improve the comfort of gripping the grip 10, and also increase the friction when gripping the grip 10, thereby reducing the probability of the grip 10 slipping out of the hand.

[0035] Reference Figure 1 The oxygen tube 2 and the argon tube 3 are both installed with a quick connector 12 at one end of the handle 10. The setting of the quick connector 12 enables the oxygen tube 2 and the argon tube 3 to quickly replace the corresponding gas source, which facilitates the replacement of the gas source.

[0036] Reference Figure 1 and Figure 2 A circular mounting platform 13 is fixedly provided on the circumference of the gun head 1 near the welding side, and a light reduction cover 14 is detachably installed on the mounting platform 13 by bolts. The light reduction cover 14 is a dark transparent cover body, and the overall shape is a frustum. The setting of the shielding cover can reduce the impact of strong light on the operator during welding, and can also block the ignition of spatter during welding; a number of fill lights 15 are installed on the welding side of the mounting platform 13 facing the gun head 1, and the fill lights 15 are evenly embedded in the mounting platform 13 along the mounting platform 13. When the light is poor, the fill lights 15 can be turned on to provide light, which is convenient for welding in areas with poor light.

[0037] The implementation principle of the embodiment of the present application is: two linkage gears 8 with appropriate gear ratios are selected according to actual needs, and the two linkage gears 8 are installed and fixed on two linkage rods 7, and then an argon source is connected to the argon tube 3, and an oxygen source is connected to the oxygen tube 2, and then the handle 9 is turned to adjust the size of the opening of the through hole 5 of the sphere 42 inside the valve body 41 according to needs, and the pipeline is welded.

[0038] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A pipe welding gun, comprising a gun head (1), wherein the gun head (1) is connected to and communicates with an oxygen tube (2) and an argon tube (3), characterized in that: The oxygen tube (2) and the argon tube (3) are both provided with a ball valve (4), and the ball valve (4) comprises a valve body (41) provided on the oxygen tube (2) or the argon tube (3) and a sphere (42) rotatably provided in the valve body (41). A driving rod (6) and a linkage rod (7) are coaxially fixed on both sides of the sphere (42). The driving rod (6) and the linkage rod (7) both pass through the valve body (41) and extend out of the valve body (41). The linkage rods (7) on the oxygen tube (2) and the argon tube (3) are provided with linkage gears (8). The linkage gears (8) on the linkage rod (7) of the oxygen tube (2) and the linkage rod (7) of the argon tube (3) are meshed with each other, and the two linkage gears (8) have different numbers of teeth.

2. A pipe welding gun according to claim 1, characterized in that: The linkage gear (8) is detachably arranged on the linkage rod (7).

3. A pipeline welding gun according to claim 1, characterized in that: A turning handle (9) is mounted on the driving rod (6).

4. A pipeline welding gun according to claim 1, characterized in that: The gun head (1) is provided with a handle (10), and the ends of the oxygen tube (2) and the argon tube (3) away from the gun head (1) are both inserted into and pass through the handle (10).

5. A pipeline welding gun according to claim 4, characterized in that: A gripping groove (11) is provided on the handle (10).

6. A pipeline welding gun according to claim 4, characterized in that: The oxygen tube (2) and the argon tube (3) are both provided with a quick connector (12) at one end thereof, which passes through the handle (10).

7. The pipeline welding gun according to claim 1, characterized in that: A mounting platform (13) is provided on the gun head (1), and a light reduction cover (14) is detachably mounted on the mounting platform (13).

8. The pipeline welding gun according to claim 7, characterized in that: A plurality of fill lights (15) are installed on the side of the mounting platform (13) facing the welding side of the gun head (1).

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