Welding gun and automatic welding device
By setting up articulated radial suction pipes and auxiliary structures at the front end of the welding gun, the problem of poor smoke suction effect of existing welding devices is solved, and efficient smoke absorption in different environments is achieved and the effect of preventing blockage and friction is achieved.
Patent Information
- Application Number
- CN202411752385.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-01-14
AI Technical Summary
The air intake design of existing welding devices leads to poor smoke suction effect, especially in welding scenarios in different environments, which are difficult to effectively cover and suck away smoke.
Design a welding gun with several articulated radial suction pipes on the front end, which can automatically adjust the posture to adapt to different environments. Combined with the structures such as sleeves, swing parts, air guide covers, insulation rings and return springs, ensure that the suction pipe is in Effectively cover the smoke source and improve the inhalation efficiency in different scenarios.
It realizes more efficient smoke absorption in different welding environments, improves smoke suction effect, avoids particulate blockage, and reduces friction and high-temperature damage.
Smart Images
Figure CN119304458A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of welding robots, and in particular to a welding gun and an automatic welding device. Background Art
[0002] Metal welding is a common machining method. During welding, a large amount of smoke is often generated. It is difficult for the smoke to dissipate in a relatively closed workshop, resulting in poor control quality in the workshop. In this regard, the prior art also provides some welding devices, the front end of which is provided with an air intake port, so that the generated smoke can be sucked away in time. However, these air intake ports are all fixed. The scene in which the welding gun is located during the welding process may be relatively spacious or relatively narrow. Therefore, the air intake ports are all made relatively small, and the range that can be covered is relatively small. This also makes the welding gun of the prior art have a poor effect on the suction of smoke. Summary of the invention
[0003] The object of the present invention is to provide a welding gun and an automatic welding device, which can automatically absorb the smoke generated during welding.
[0004] The embodiments of the present invention are implemented by the following technical solutions:
[0005] A welding gun comprises a welding gun body and a plurality of suction pipes; the plurality of suction pipes are arranged at the front end of the welding gun and are radially arranged around the welding gun; the suction pipes are hinged to the front end of the welding gun, and the center line of the welding gun is located on the plane formed by the swing of the suction pipes; the suction pipes are also provided with a reset member so that the suction pipes can swing to be perpendicular to the welding gun when not subjected to external force; the suction pipes are all connected to a suction pump.
[0006] Furthermore, it also includes a swinging member and a sleeve; the swinging member is hinged to the welding gun; the sleeve is detachably connected to the swinging member; the air intake pipe is passed through the swinging member and is arranged inside the sleeve; the sleeve is provided with a plurality of air inlet holes.
[0007] Furthermore, the two opposite side surfaces of the sleeve are respectively a guide surface and an air suction surface; the guide surface is close to the end of the welding gun; the air inlet hole is arranged on the air suction surface; the air suction pipe is also provided with a plurality of air inlet holes and the air inlet holes of the air suction pipe are directly opposite to the air suction surface.
[0008] Furthermore, it also includes an air guide hood; the air guide hood is tile-shaped; the air guide hood is arranged opposite to the air intake surface and an air inlet duct is reserved between the air guide hood and the outer wall of the sleeve; the openings on both sides of the air inlet duct point to the guide surface; the air guide hood is fixedly connected to the swinging member.
[0009] Furthermore, the density of the air inlet holes of the air intake pipe gradually decreases from the end of the air intake pipe toward the swinging member.
[0010] Furthermore, a heat-insulating ring is provided inside the welding gun; the heat-insulating ring is matched with each of the air intake pipes to be provided with a through hole; the air intake pipe is passed through the through hole.
[0011] Furthermore, the reset member includes a reset spring; the reset spring is arranged between the air intake pipe and the heat insulation ring.
[0012] Furthermore, a plurality of balls are arranged on the guide surface of the sleeve.
[0013] Furthermore, the air intake pipe is a corrugated pipe.
[0014] An automated welding device comprises a moving device, a mechanical arm, an air suction pump and the above-mentioned welding gun; the mechanical arm and the air suction pump are both arranged on the moving device; and the welding gun is arranged on the mechanical arm.
[0015] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:
[0016] When the welding gun of the present invention is in use, a plurality of air intake pipes move with the welding gun. If the welding gun is located in an open position, the plurality of air intake pipes will not contact other objects. When not affected by external forces, the plurality of air intake pipes are all in a state perpendicular to the welding gun. At this time, the area covered by the plurality of air intake pipes is the largest, thereby better sucking the smoke generated at the front end of the welding gun. If the welding gun is in a narrow environment, the air intake pipe swings under the push of external objects, thereby causing the air intake pipe to be in a bent state, allowing the welding gun to easily enter the narrow space. At the same time, the air intake pipe is now in contact with the boundary of the environment, thereby completely covering this narrow space, and the smoke must be sucked away through the air intake pipe. It is also possible that part of the air intake pipe is bent while part of the air intake pipe is still perpendicular to the welding gun. The air intake pipes of the present invention can adjust the posture of the air intake pipes as the welding environment changes, thereby better adapting to the welding environment.
[0017] The sleeve and the swing part are provided so that the sleeve can protect the air intake pipe; at the same time, the wearing sleeve can also be replaced. The guide surface of the sleeve is a smooth surface or a ball bearing is provided so that the sleeve can slide more smoothly relative to the external object when it contacts the surrounding objects, thereby adjusting the angle of the air intake pipe. The air guide hood can block the air inlet to a certain extent to prevent the entry of particles in welding and cause blockage. At the same time, the smoke generated by welding can also be better sucked. After several air intake pipes are opened, the distance between the ends of two adjacent air intake pipes is the farthest, so the air intake holes here are the most dense, thereby generating a greater suction force to absorb the smoke. The cooperation of the heat insulation ring and the reset spring prevents the air intake pipe from contacting the welding core at the center of the welding gun, reducing friction while isolating high temperature. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1It is a schematic diagram of the automatic welding device of the present invention.
[0019] Figure 2 This is the appearance of the welding gun.
[0020] Figure 3 This is a schematic diagram of the internal structure of the welding gun.
[0021] Figure 4 for Figure 3 Enlarged view of point a in the middle.
[0022] Figure 5 Schematic diagram of the coordination between the intake pipe and surrounding components.
[0023] Figure numerals: 1- welding gun, 2- moving device, 3- mechanical arm, 4- air suction pump, 5- air suction pipe, 6- swinging member, 7- sleeve, 8- air inlet hole, 9- guide surface, 10- air guide cover, 11- air inlet duct, 12- heat insulation ring, 13- return spring, 14- locking nut, 15- welding core, 16- welding wire. DETAILED DESCRIPTION
[0024] like Figure 1-5 As shown, the present invention provides a welding gun 1, including a welding gun 1 body and a plurality of air suction pipes 5. The welding gun 1 body is the same as a conventional welding gun 1, and it only adds an air suction mechanism on the basis of the existing welding gun 1. The center of the welding gun 1 is a welding core 15, which is the core component of the welding gun 1. The welding wire 16 is transported to the welding point through the center of the welding core 15. The welding core 15 is energized or uses gas or generates an arc to melt the welding wire 16 and the workpiece to be welded, and then they are integrated to complete the welding.
[0025] A plurality of air intake pipes 5 are arranged at the front end of the welding gun 1 and are arranged radially around the welding gun 1. The distance between the air intake pipe 5 and the front end of the welding gun 1 can be set to be about 2 cm. Figure 3 As shown in FIG. 1 , the air intake pipe 5 is hinged to the front end of the welding gun 1, and the center line of the welding gun 1 is located on the plane formed by the swing of the air intake pipe 5. In other words, the air intake pipe 5 can be bent into the interior of the welding gun 1 and be parallel to the center line of the welding gun 1. It can also be perpendicular to the welding gun 1 and extend to the outside of the welding gun 1. The schematic diagram of several air intake pipes 5 extending out is shown in FIG. Figure 2 The suction pipe 4 is also provided with a reset member so that the suction pipe 5 can swing to be perpendicular to the welding gun 1 when no external force is applied. The suction pipe 5 is connected to the suction pump 4.
[0026] When the welding gun 1 of the present invention is in use, the plurality of air intake pipes 5 move with the welding gun 1. If the welding gun 1 is located in an open position, the plurality of air intake pipes 5 will not contact other objects. Without the influence of external forces, the plurality of air intake pipes 5 are all in a state perpendicular to the welding gun 1. At this time, the area covered by the plurality of air intake pipes 5 is the largest, thereby better sucking the smoke generated at the front end of the welding gun 1. If the welding gun 1 is in a narrow environment, the air intake pipe 5 swings under the push of external objects, thereby making the air intake pipe 5 in a bent state, so that the welding gun 1 can easily enter the narrow space. At the same time, the air intake pipe 5 is now in contact with the boundary of the environment, thereby completely covering this narrow space, and the smoke must be sucked away through the air intake pipe 5. It is also possible that part of the air intake pipe 5 is bent while part of the air intake pipe 5 is still perpendicular to the welding gun 1. The air intake pipe 5 of the present invention can adjust the posture of the air intake pipe 5 in accordance with the changes in the welding environment, thereby better adapting to the welding environment.
[0027] In this embodiment, a swinging member 6 and a sleeve 7 are also included. Figure 3 and 4 As shown, the swing member 6 is hinged to the welding gun 1. The sleeve 7 is detachably connected to the swing member 6. The air intake pipe 5 is inserted into the sleeve 7 through the swing member 6. The sleeve 7 is provided with a plurality of air inlet holes 8. Specifically, the sleeve 7 is threadedly connected to the swing member 6. In order to make the air inlet holes 8 just away from the front end of the welding gun 1 when the sleeve 7 is installed, a locking nut 14 is also provided. When the sleeve 7 is rotated to a suitable position, the position of the sleeve 7 can be locked by tightening the locking nut 14.
[0028] When in use, the air intake pipe 5 is inserted into the sleeve 7 and fixed by a locking nut. The sleeve 7 and the swing member 6 are provided so that the sleeve 7 protects the air intake pipe 5. At the same time, the sleeve 7 is easily damaged by long-term contact and friction with external objects. The sleeve 7 is provided so that it can also be replaced.
[0029] In this embodiment, the two opposite sides of the sleeve 7 are a guide surface 9 and an air suction surface. The guide surface 9 is close to the end of the welding gun 1. The air inlet 8 is arranged on the air suction surface. The air suction pipe 5 is also provided with a plurality of air inlet holes 8, and the air inlet holes 8 of the air suction pipe 5 are directly opposite to the air suction surface. The guide surface 9 of the sleeve 7 can also be provided with a plurality of balls.
[0030] The guide surface 9 of the sleeve 7 is a smooth surface or provided with balls so that the sleeve 7 can slide more smoothly relative to the external objects when in contact with the surrounding objects, thereby adjusting the angle of the air intake pipe 5.
[0031] In this embodiment, an air guide cover 10 is also included. Figure 5As shown, the air guide hood 10 is tile-shaped. The air guide hood 10 is arranged opposite to the air suction surface and an air inlet duct 11 is reserved between the air guide hood 10 and the outer wall of the sleeve 7. The openings on both sides of the air inlet duct 11 point to the guide surface 9. The air guide hood 10 is fixedly connected to the swing member 6. When in use, under the action of the air guide hood 10, the air on one side of the guide surface 9 is sucked away by the air suction pipe 5, thereby taking away the smoke generated by welding.
[0032] The air guide cover 10 can shield the air inlet 8 to a certain extent, preventing particles from entering during welding and causing blockage, and also allows the smoke generated by welding to be better sucked out.
[0033] In this embodiment, the density of the air inlet holes 8 of the air intake pipe 5 gradually decreases from the end of the air intake pipe 5 toward the swing member 6. After the air intake pipes 5 are opened, the distance between the ends of two adjacent air intake pipes 5 is the farthest, so the air inlet holes 8 here are the most dense, thereby generating a greater suction force to absorb smoke.
[0034] In this embodiment, a heat insulation ring 12 is also provided inside the welding gun 1. Figure 3 and 4 As shown, the heat insulating ring 12 is provided with a through hole in cooperation with each air intake pipe 5. The air intake pipe 5 is arranged inside the through hole. During welding, the temperature of the welding core 15 may be high, which may damage the air intake pipe 5. The heat insulating ring 12 can prevent the air intake pipe 5 from contacting the welding core 15.
[0035] In this embodiment, the reset member includes a reset spring 13. Figure 3 and 4 As shown, the return spring 13 is arranged between the air intake pipe 5 and the heat insulation ring 12. When the air intake pipe 5 swings to be almost parallel to the center line of the welding gun 1, the bending angle of the air intake pipe 5 is the largest, the distance the air intake pipe 5 is pulled is the largest, and the amount of compression of the return spring 13 is the largest. Under the action of the return spring 13, the air intake pipe 5 can be reset to be perpendicular to the welding gun 1. During the reset process, the air intake pipe 5 retracts under the action of the return spring 13 to avoid gathering at the front end of the welding gun 1 and contacting the welding core 15. The cooperation of the heat insulation ring 12 and the return spring 13 prevents the air intake pipe 5 from contacting the welding core 15 at the center of the welding gun 1, reducing friction while isolating high temperature.
[0036] In this embodiment, the air intake pipe 5 is a corrugated pipe, which is more adaptable to frequent bending.
[0037] The present invention also provides an automated welding device, comprising a mobile device 2, a mechanical arm 3, an air suction pump 4 and the above-mentioned welding gun 1. The mechanical arm 3 and the air suction pump 4 are both arranged on the mobile device 2. The welding gun 1 is arranged on the mechanical arm 3. During welding, the mobile device 2 drives the welding gun 1 to move, and then welds different parts. The mechanical arm 3 adjusts the position and angle of the welding gun 1. The air suction pump 4 will automatically start during welding, so that a plurality of air suction pipes 5 can be sucked, and then the smoke generated by welding can be sucked away.
[0038] It should be noted that the welding gun 1 is generally curved, and its center line is also curved. Therefore, the center line described in this specification is the center line of the part where the suction pipe 5 is installed on the welding gun 1.
Claims
1. A welding gun, characterized in that: It includes a welding gun body and a plurality of suction pipes; the plurality of suction pipes are arranged at the front end of the welding gun and are radially arranged around the welding gun; the suction pipes are hinged to the front end of the welding gun, and the center line of the welding gun is located on the surface formed by the swing of the suction pipes; the suction pipes are also provided with a reset part so that the suction pipes can swing to be perpendicular to the welding gun when not subject to external force; the suction pipes are all connected to a suction pump.
2. The welding gun according to claim 1, characterized in that: It also includes a swinging piece and a sleeve; the swinging piece is hinged to the welding gun; the sleeve is detachably connected to the swinging piece; the air intake pipe is passed through the swinging piece and is arranged inside the sleeve; and the sleeve is provided with a plurality of air inlet holes.
3. The welding gun according to claim 2, characterized in that: The two opposite sides of the sleeve are respectively a guide surface and an air suction surface; the guide surface is close to the end of the welding gun; the air inlet is arranged on the air suction surface; the air suction pipe is also provided with a plurality of air inlet holes and the air inlet holes of the air suction pipe are directly opposite to the air suction surface.
4. The welding gun according to claim 3, characterized in that: The invention also includes an air guide cover; the air guide cover is in the shape of a tile; the air guide cover is arranged opposite to the air intake surface and an air inlet passage is reserved between the air guide cover and the outer wall of the sleeve; the openings on both sides of the air inlet passage point to the guide surface; the air guide cover is fixedly connected to the swinging member.
5. The welding gun according to claim 4, characterized in that: The density of the air inlet holes of the air intake pipe gradually decreases from the end of the air intake pipe toward the swing member.
6. The welding gun according to claim 5, characterized in that: A heat-insulating ring is also provided inside the welding gun; the heat-insulating ring is matched with each of the air intake pipes to be provided with a through hole; the air intake pipe is passed through the through hole.
7. The welding gun according to claim 6, characterized in that: The return element comprises a return spring; the return spring is arranged between the air intake pipe and the heat insulation ring.
8. The welding gun according to claim 7, characterized in that: The guide surface of the sleeve is provided with a plurality of balls.
9. The welding gun according to claim 8, characterized in that: The air intake pipe is a bellows.
10. An automated welding device, characterized in that: It comprises a moving device, a mechanical arm, an air suction pump and a welding gun according to any one of claims 1 to 9; the mechanical arm and the air suction pump are both arranged on the moving device; and the welding gun is arranged on the mechanical arm.