Cable separation type push-pull wire welding gun
By designing welding cables and wire feeding pipes connected independently in the push-pull wire welding torch, and installing auxiliary wire feeding mechanisms and anti-collision devices on the welding torch handle, the problems of poor wire conveying stability and easy damage to the welding torch handle are solved, and precise control of welding wire conveying and effective protection of the welding torch are achieved.
Patent Information
- Application Number
- CN202422036308.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-21
AI Technical Summary
During the welding process, the existing push-pull wire welding torches have problems such as poor wire conveying stability, difficulty in accurately controlling the wire conveying status, and easy damage to the welding torch handle.
A cable separation type push-pull wire welding torch is designed. The welding cable and wire feeding tube are connected to the welding torch handle in an independent pipeline, and an auxiliary wire feeding mechanism is installed on the welding torch handle to accurately control the wire conveying state. At the same time, a collision preventer is set between the welding torch handle and the robotic arm to protect the welding torch.
It improves the stability of welding wire conveying, realizes precise control of the welding wire conveying status, and effectively protects the welding gun handle to avoid damage caused by collision.
Smart Images
Figure CN223028674U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of welding torches, and particularly relates to a cable-separated push-pull wire welding torch. Background Art
[0002] A welding torch refers to the part that performs welding operations during the welding process. The welding torch uses the high current and high voltage generated by the welding machine to concentrate heat at the end of the welding torch, melting the welding wire. The melted welding wire penetrates into the part to be welded. After cooling, the objects to be welded are firmly connected into one body. In order to meet the welding requirements of the welding torch, it is necessary to use the welding torch handle to adjust the welding point of the welding torch.
[0003] Compared with other metal materials, aluminum and aluminum alloys have a small density and high strength. Through artificial anodic oxidation and coloring, cast aluminum alloys with good casting performance or wrought aluminum alloys with good processing plasticity can be obtained. After adding certain alloying elements, it is easy to process cast aluminum alloys with good casting performance or wrought aluminum alloys with good processing plasticity. Therefore, in the welding field, the application of aluminum wire welding torches is gradually becoming widespread. Since the aluminum wire is relatively soft, the phenomenon of the aluminum wire being bent easily occurs during the welding process. For this situation, the design of the push-pull wire welding torch has emerged. The existing push-pull wire welding torches have the following problems:
[0004] 1. The wire feeding tube is arranged inside the welding cable. The welding wire (especially the aluminum welding wire) is soft in material, and the stability of the welding wire feeding in the wire feeding tube is poor;
[0005] 2. The wire feeding mechanism is often arranged at the tail of the welding cable, and it is very difficult to accurately control the feeding state of the welding wire;
[0006] 3. When the robotic arm manipulates the welding torch handle, the welding torch handle is prone to collide with the workpiece. There is a lack of a protection mechanism for the welding torch handle, which is likely to cause damage to the welding torch handle. Content of the Utility Model
[0007] In view of the above deficiencies, the utility model provides a cable-separated push-pull wire welding torch. The welding cable and the wire feeding tube are connected to the welding torch handle in an independent pipeline to improve the stability of the wire feeding tube for feeding the welding wire. By installing an auxiliary wire feeding mechanism on the welding torch handle to assist in feeding the welding wire, the accurate control of the feeding state of the welding wire is realized. A collision preventer is arranged between the welding torch handle and the robotic arm to protect the welding torch and avoid damage to the welding torch when it collides with the workpiece.
[0008] The utility model is realized through the following technical solutions:
[0009] A cable-separated push-pull wire welding torch, comprising: a welding torch handle, a welding cable, a wire feeding tube, a collision preventer and a power supply. The welding cable and the wire feeding tube are connected to the welding torch handle through independent pipelines. An auxiliary wire feeding mechanism and a gun neck are installed on the welding torch handle. The auxiliary wire feeding mechanism includes a driving wheel, a driven wheel and a motor for driving the driving wheel to rotate. The driving wheel and the driven wheel clamp the welding wire to convey the welding wire to the gun neck, so as to achieve precise control of the conveying state of the welding wire. The collision preventer is fixed to the robotic arm, and the collision preventer and the welding torch handle are fixedly connected through a fixing bracket. The collision preventer has a normal state and a triggered state. When the collision preventer is in the triggered state, the power supply is disconnected to protect the welding torch.
[0010] Further, the collision preventer includes a fixed housing, a sliding member, a pressure-sensitive switch and a spring. A connecting seat for connecting to the robotic arm is provided on the fixed housing. A limiting chute for cooperating with the sliding member is opened in the fixed housing. One end of the sliding member is fixed to the fixing bracket, and the other end is slidably connected to the limiting chute. A pressure-sensitive switch for connecting to the power supply is provided on the side wall of the fixed housing. The spring presses the sliding member to abut against the pressure-sensitive switch. When the welding torch collides with the workpiece, the collision preventer changes from the normal state to the triggered state, the power supply is disconnected, and the welding torch stops welding operation.
[0011] Further, along the circumferential direction of the central axis of the sliding member, a plurality of springs are evenly distributed to improve the extrusion stability of the spring on the sliding member.
[0012] Further, a connector is installed on one side of the sliding member close to the spring, and the connectors correspond to the springs one by one to fix the positions of the springs and prevent the plurality of springs from interfering with each other.
[0013] Further, a power supply wire harness is provided between the welding torch handle and the collision preventer to supply power to the welding torch.
[0014] Further, arc grooves for abutting against the welding wire are opened on both the driving wheel and the driven wheel. The arc grooves are located at the central positions of the driving wheel and the driven wheel to improve the clamping stability of the driving wheel and the driven wheel on the welding wire.
[0015] Further, a quick connector for cooperating with the wire feeder is installed at the end of the wire feeding tube to facilitate the insertion and installation of the wire feeding tube to the wire feeder. The auxiliary wire feeding mechanism is signal-connected to the wire feeder.
[0016] Further, an anti-bending protection spring is sleeved outside the connection part of the wire feeding tube and the welding torch handle to protect the connection part of the wire feeding tube and the welding torch handle.
[0017] Further, a maintenance hole is opened on the welding torch handle above the auxiliary wire feeding mechanism, and a cover plate for blocking the maintenance hole is provided at the maintenance hole of the welding torch handle to facilitate the maintenance and adjustment of the auxiliary wire feeding mechanism.
[0018] Furthermore, an air-cooling channel is provided inside the welding cable. The welding cable is connected to a cooling air pump, and the cooling air pump conveys cooling gas into the welding cable to supply cold air to the welding wire.
[0019] Advantages of the present utility model:
[0020] 1. The welding cable and the wire feeding tube are connected to the welding torch handle in independent pipelines to improve the stability of the wire feeding tube for wire feeding.
[0021] 2. By installing an auxiliary wire feeding mechanism on the welding torch handle to assist in wire feeding, precise control of the wire feeding state is achieved.
[0022] 3. A collision protector is provided between the welding torch handle and the robotic arm to protect the welding torch and prevent damage to the welding torch when it collides with the workpiece. Description of the Drawings
[0023] Figure 1 A schematic structural diagram for explaining a schematic embodiment of a cable-separated push-pull wire welding torch in the present utility model;
[0024] Figure 2 A cross-sectional view for explaining a schematic embodiment of a cable-separated push-pull wire welding torch in the present utility model;
[0025] Figure 3 For explaining Figure 2 A partial enlarged schematic diagram at position A in
[0026] Figure 4 A cross-sectional view for explaining another schematic embodiment of a cable-separated push-pull wire welding torch in the present utility model;
[0027] Figure 5 A connection schematic diagram for explaining a schematic embodiment of a cable-separated push-pull wire welding torch in the present utility model;
[0028] Figure 6 For explaining Figure 5 A partial enlarged schematic diagram at position B in
[0029] Figure 7 A schematic structural diagram for explaining a schematic embodiment of a cable-separated push-pull wire welding torch in a cut-open state in the present utility model;
[0030] Figure 8 For explaining Figure 7 A partial enlarged schematic diagram at position C in
[0031] List of components and reference numerals:
[0032] 1. Welding torch handle; 12. Auxiliary wire feeding mechanism; 121. Driving wheel; 122. Driven wheel; 123. Arc-shaped groove; 13. Gun neck; 14. Cover plate; 2. Welding cable; 21. Air-cooling channel; 3. Wire feeding tube; 31. Quick connector; 32. Anti-bending protection spring; 4. Anti-collision device; 41. Fixed housing; 411. Connecting seat; 412. Limit sliding groove; 42. Sliding part; 421. Connector; 43. Pressure-sensitive switch; 44. Spring; 5. Welding wire; 6. Fixed bracket; 7. Power supply harness. Specific embodiments
[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0034] It should be noted that the orientation terms such as left, right, up, down, front, and back in the embodiments of the present invention are only relative concepts to each other or are referenced based on the normal use state of the product, that is, the traveling direction of the product, and should not be considered as restrictive.
[0035] In addition, it should also be noted that the dynamic terms such as "relative movement" mentioned in the embodiments of the present invention not only include changes in position, but also include movements such as rotation and rolling where the position does not change relatively, but the state changes.
[0036] Finally, it should be noted that when a component is referred to as being "located" or "disposed on" another component, it can be on the other component or there may be an intermediate component at the same time. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time.
[0037] As Figures 1 to 8 shown, a cable-separated push-pull wire welding torch includes: a welding torch handle 1, a welding cable 2, a wire feeding tube 3, an anti-collision device 4, and a power supply. The welding cable 2 and the wire feeding tube 3 are connected to the welding torch handle 1 as independent pipelines. An auxiliary wire feeding mechanism 12 and a gun neck 13 are installed on the welding torch handle 1. The auxiliary wire feeding mechanism 12 includes a driving wheel 121, a driven wheel 122, and a motor for driving the driving wheel 121 to rotate. The driving wheel 121 and the driven wheel 122 clamp the welding wire 5 to convey the welding wire 5 to the gun neck 13, realizing precise control of the conveying state of the welding wire 5. The anti-collision device 4 is fixed to the robotic arm, and the anti-collision device 4 is fixedly connected to the welding torch handle 1 through a fixed bracket 6. The anti-collision device 4 has a normal state and a triggered state. When the anti-collision device 4 is in the triggered state, the power supply is disconnected to protect the welding torch.
[0038] In one embodiment, the welding wire 5 in the wire feeder sequentially passes through the wire feeding tube 3, the welding torch handle 1, and the auxiliary wire feeding mechanism 12 and penetrates into the gun neck 13, and the welding wire 5 is located between the driving wheel 121 and the driven wheel 122 of the auxiliary wire feeding mechanism 12. Then, the welding torch handle 1 is connected to the anti-collision device 4 through the fixing bracket 6, and the anti-collision device 4 is installed on the robotic arm through the connecting seat 411. The power supply is connected, and the control mechanism of the robotic arm is started so that the robotic arm drives the welding torch to perform welding operations on the gap of the workpiece. Among them, the auxiliary wire feeding mechanism 12 can accurately control the feeding state of the welding wire 5 between the driving wheel 121 and the driven wheel 122 so that the welding wire 5 can adapt to the welding requirements. When the robotic arm manipulates the welding torch to move and collide with the workpiece, the welding torch squeezes the anti-collision device 4 so that the anti-collision device 4 switches from the normal state to the triggered state, the power supply is disconnected, and the entire welding device stops running for the maintenance personnel to re-adjust.
[0039] Preferably, the anti-collision device 4 includes a fixed housing 41, a sliding member 42, a pressure-sensitive switch 43, and a spring 44. The fixed housing 41 is provided with a connecting seat 411 for connecting the robotic arm. A limiting chute 412 for cooperating with the sliding member 42 is formed in the fixed housing 41. One end of the sliding member 42 is fixed to the fixing bracket 6, and the other end is slidably connected to the limiting chute 412. A pressure-sensitive switch 43 for connecting the power supply is provided on the side wall of the fixed housing 41. The spring 44 squeezes the sliding member 42 to abut against the pressure-sensitive switch 43. When the welding torch collides with the workpiece, the anti-collision device 4 changes from the normal state to the triggered state, the power supply is disconnected, and the welding torch stops welding operations.
[0040] In one embodiment, when the welding torch collides with the workpiece, the workpiece reacts on the welding torch with a squeezing force, so that the sliding member 42 fixedly connected to the welding torch squeezes the spring 44 along the limiting chute 412 to achieve buffering of the welding torch. When the sliding member 42 moves along the limiting chute 412 towards the spring 44, the sliding member 42 is disconnected from the pressure-sensitive switch 43, and then the power supply is disconnected, so that the entire welding device is powered off, thereby preventing the robotic arm from continuing to drive the welding torch to operate and causing damage to the welding torch.
[0041] Preferably, a plurality of springs 44 are evenly distributed along the circumferential direction of the central axis of the sliding member 42 to improve the extrusion stability of the spring 44 on the sliding member 42.
[0042] Preferably, a connector 421 is installed on the side of the sliding member 42 close to the spring 44, and the connectors 421 correspond to the springs 44 one by one to fix the positions of the springs 44 and avoid the interlacing interference of the plurality of springs 44.
[0043] In one embodiment, a part of the spring 44 is sleeved and installed in the connector 421. The connector 421 is fixedly connected to the end of the spring 44, enabling the spring 44 to reciprocate in its extending direction and preventing the spring 44 from bending, tilting, etc.
[0044] Preferably, a power supply wire harness 7 is provided between the welding torch handle 1 and the anti-collision device 4 to supply power to the welding torch.
[0045] Preferably, the driving wheel 121 and the driven wheel 122 are both provided with arc-shaped grooves 123 that abut against the welding wire 5. The arc-shaped grooves 123 are located at the central positions of the driving wheel 121 and the driven wheel 122, improving the clamping stability of the driving wheel 121 and the driven wheel 122 on the welding wire 5.
[0046] In one embodiment, by providing the arc-shaped grooves 123 on both the driving wheel 121 and the driven wheel 122, the contact areas between the welding wire 5 and the driving wheel 121, and between the welding wire 5 and the driven wheel 122 are increased, that is, the friction between the welding wire 5 and the auxiliary wire feeding mechanism 12 is increased, improving the stability of the auxiliary wire feeding mechanism 12 in feeding the welding wire 5.
[0047] Preferably, a quick connector 31 that cooperates with the wire feeder is installed at the end of the wire feeding tube 3, facilitating the insertion and installation of the wire feeding tube 3 into the wire feeder. The auxiliary wire feeding mechanism 12 is signal-connected to the wire feeder.
[0048] In one embodiment, by installing the quick connector 31 at the end of the wire feeding tube 3, the installation speed between the wire feeding tube 3 and the wire feeder is accelerated. Among them, the quick connector 31 is a conventional structure, and the principle and structural content of the quick connector 31 will not be elaborated herein.
[0049] Preferably, an anti-bending protection spring is sleeved outside the connection part of the wire feeding tube 3 and the welding torch handle 1 to protect the connection part of the wire feeding tube 3 and the welding torch handle 1.
[0050] Preferably, the welding torch handle 1 is provided with a maintenance hole above the auxiliary wire feeding mechanism 12, and a cover plate 14 for blocking the maintenance hole is provided at the maintenance hole of the welding torch handle 1, facilitating the maintenance and adjustment of the auxiliary wire feeding mechanism 12.
[0051] In one embodiment, according to the different diameters of the used welding wire 5, the auxiliary wire feeding mechanism 12 needs to replace the driving wheel 121 and the driven wheel 122 of the appropriate type. By opening the cover plate 14, the driving wheel 121 and the driven wheel 122 are taken out inside the welding torch handle 1, facilitating the installation and adjustment of the driving wheel 121 and the driven wheel 122.
[0052] Preferably, an air-cooling channel 21 is provided inside the welding cable 2. The welding cable 2 is connected to a cooling air pump, and the cooling air pump conveys cooling gas into the welding cable 2 to supply cold air to the welding wire 5.
[0053] When the above-mentioned cable-separated push-pull wire welding torch is adopted, the welding cable 2 and the wire feeding tube 3 are connected to the welding torch handle 1 in an independent pipeline to improve the stability of the wire feeding tube 3 for wire 5 feeding. By installing an auxiliary wire feeding mechanism 12 on the welding torch handle 1 to assist in wire 5 feeding, precise control of the wire 5 feeding state is achieved. A collision preventer 4 is connected between the welding torch handle 1 and the robotic arm to protect the welding torch and avoid damage to the welding torch when the welding torch collides with the workpiece.
[0054] The above are only the embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.
Claims
1. A cable separation type push-pull wire welding gun, characterized in that: include: A welding gun handle, a welding cable, a wire feed tube, a bumper and a power supply, wherein the welding cable and the wire feed tube are connected to the welding gun handle in independent pipelines; The welding gun handle is provided with an auxiliary wire feeding mechanism and a gun neck, wherein the auxiliary wire feeding mechanism comprises a driving wheel, a driven wheel and a motor for driving the driving wheel to rotate, wherein the driving wheel and the driven wheel form a clamping state for the welding wire so as to feed the welding wire to the gun neck; The bumper is fixed to the robot arm, and the bumper is fixedly connected to the welding gun handle via a fixed bracket. The bumper has a normal state and a trigger state. When the bumper is in the trigger state, the power supply is disconnected.
2. A cable separation type push-pull welding gun according to claim 1, characterized in that: The anti-collision device includes a fixed shell, a sliding member, a pressure-sensitive switch and a spring. The fixed shell is provided with a connecting seat connected to the mechanical arm, and a limiting slide groove cooperating with the sliding member is opened in the fixed shell. One end of the sliding member is fixed to the fixed bracket, and the other end is slidably connected to the limiting slide groove. A pressure-sensitive switch connected to the power supply is provided on the side wall of the fixed shell, and the spring presses the sliding member until it abuts against the pressure-sensitive switch.
3. A cable separation type push-pull welding gun according to claim 2, characterized in that: A plurality of springs are evenly distributed along the circumferential direction of the central axis of the sliding member.
4. A cable separation type push-pull welding gun according to claim 3, characterized in that: A connector is installed on one side of the sliding member close to the spring, and the connector corresponds to the spring one by one.
5. A cable separation type push-pull welding gun according to claim 1, characterized in that: A power supply harness is provided between the welding gun handle and the bumper.
6. A cable separation type push-pull welding gun according to claim 1, characterized in that: The driving wheel and the driven wheel are both provided with an arc groove abutting against the welding wire, and the arc groove is located at the center position of the driving wheel and the driven wheel.
7. A cable separation type push-pull welding gun according to claim 1, characterized in that: A quick-insert device matching with a wire feeder is installed at the end of the wire feeding tube, and the auxiliary wire feeding mechanism is connected with the wire feeder signal.
8. A cable separation type push-pull welding gun according to claim 1, characterized in that: An anti-bending protection spring is externally connected to the connection between the wire feeding tube and the welding gun handle.
9. A cable separation type push-pull welding gun according to claim 1, characterized in that: The welding gun handle is provided with a maintenance hole located above the auxiliary wire feeding mechanism, and a cover plate for blocking the maintenance hole is provided at the maintenance hole of the welding gun handle.
10. A cable separation type push-pull welding gun according to claim 1, characterized in that: An air cooling channel is arranged in the welding cable. The welding cable is connected to a cooling air pump, and the cooling air pump delivers cooling gas into the welding cable.