A barrelled welding wire auxiliary wire feeder and a wire feeding method

Abstract

The application discloses a kind of barrelled welding wire auxiliary wire feeder and wire feeding method, including wire feeding correction clamping module, clamping pressure adjusting module and wire feeding positioning module, rely on pneumatic drive mechanism cooperation two groups of sequentially arranged wire feeding wheel group realizes mechanical transmission wire feeding, by clamping pressure adjusting module self-adapting adjustment clamping gap and provide continuous pre-tightening force, while with the aid of wire feeding positioning module completes welding wire front limit guide.The application adopts full pneumatic pure mechanical drive, without electrical signal synchronization, completely eliminates the problem of uneven wire output caused by synchronization deviation;By double wire feeding wheel group provides stable auxiliary wire feeding force, offsets long pipeline conveying resistance, reduces robot wire feeder load, avoids arc break, porosity and other welding defects.The equipment can guarantee welding wire conveying straight, stress uniform, adapt to multi-specification welding wire conveying, stable structure, strong universality, effectively improve welding production quality and continuity.

Description

Technical Field

[0001] This invention relates to the field of arc welding wire feeding technology, specifically to a drum-type welding wire auxiliary wire feeder and wire feeding method. Background Technology

[0002] Automated robotic arc welding stations commonly use drum-packaged welding wire as welding consumables. The welding wire is fed using a three-axis wire feeder from the robot in conjunction with the welding torch's built-in wire feeding mechanism, thus enabling continuous batch welding production. To alleviate the resistance of long-pipe welding wire feeding, auxiliary wire feeding devices are often added as supplementary equipment for welding wire feeding.

[0003] Currently, conventional auxiliary wire feeding equipment all adopts an electric drive structure, which must be connected to the circuit and rely on electrical signals to complete the synchronous control of the main and auxiliary wire feeding mechanisms. The synchronization deviation of the electrical signals will directly cause uneven wire feeding and low synchronous operation efficiency. In the field arc welding station, there are often situations where the distance between the welding torch and the wire hopper is far, and the resistance of the wire feeding process is large. Relying solely on the traction force provided by the robotic three-axis wire feeder cannot offset the pipeline resistance, which can easily lead to poor wire feeding, resulting in welding defects such as arc interruption and porosity, while also increasing the operating load of the robotic three-axis wire feeder. Traditional wire feeding tension adjustment relies on a single set of pressure rollers to apply pressure in one direction, resulting in uneven force on the wire and failing to ensure the straightness of the wire feeding; the wire feeding drive wheel and driven wheel only have a single specification of wire receiving groove, which cannot accommodate multiple thicknesses of welding wire, and the modular assembly is insufficient, making it difficult to guarantee assembly accuracy.

[0004] It is evident that existing electric auxiliary wire feeding equipment suffers from multiple drawbacks, such as unstable electrical synchronous wire feeding, easy welding defects caused by long-distance wire feeding, poor wire tension correction effect, and narrow range of wire specification compatibility. These drawbacks severely reduce the quality of welding and increase equipment operating losses. Therefore, the market urgently needs a new auxiliary wire feeding device with a novel structure to overcome these technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a drum-type welding wire auxiliary feeder and a wire feeding method.

[0006] This invention discloses an auxiliary wire feeder for barrel-type welding wire, comprising: The wire feeding and straightening clamping module includes a wire feeder housing and a pneumatic drive mechanism mounted on the outside of the wire feeder housing. The wire feeder housing has a wire input port and a wire output port at its two ends. Inside the wire feeder housing are a drive wheel assembly and two sets of wire feeding wheel assemblies. The pneumatic drive mechanism is driven by the drive wheel assembly and each of the wire feeding wheel assemblies. The two sets of wire feeding wheel assemblies are arranged sequentially along the wire feeding direction. Each set of wire feeding wheel assemblies consists of a pressure roller and a wire feeding roller arranged opposite each other, forming a clamping channel for the wire to pass through between the pressure roller and the wire feeding roller. The clamping pressure adjustment module is assembled one-to-one with the two sets of wire feeding wheel sets. Each clamping pressure adjustment module is connected to the pressure wheel of the corresponding wire feeding wheel set. The clamping pressure adjustment module is used to adjust the clamping channel gap in the corresponding wire feeding wheel set and continuously apply a pre-tight clamping force towards the wire feeding wheel to the pressure wheel. The wire feeding and positioning module is installed at the wire input port of the wire feeder housing to limit and guide the wire feeding, so that the wire is accurately fed into the clamping channel inside the wire feeder housing.

[0007] As a further improvement of the present invention, it also includes an L-shaped mounting base, the vertical section of which constitutes a mounting and positioning base for fixing the wire feeder housing and the pneumatic drive mechanism, and the horizontal section of which constitutes a transition mounting bracket fixed to the mounting platform; an insulating positioning plate is also provided between the vertical section of the mounting base and the wire feeder housing, and the drive end of the pneumatic drive mechanism passes through the mounting base, the insulating positioning plate, and the wire feeder housing in sequence, and is then connected to the drive wheel set for transmission.

[0008] As a further improvement of the present invention, the pneumatic drive mechanism is a vane-type pneumatic motor.

[0009] As a further improvement of the present invention, the wire feeder housing includes a wire feeder outer shell and a wire feeder dust cover. One side of the wire feeder outer shell is open, and an installation cavity is formed inside for installing the drive wheel assembly and two sets of wire feeding wheel assemblies. The wire feeder dust cover is fitted onto the open side of the wire feeder outer shell.

[0010] As a further improvement of the present invention, each of the pressure rollers and wire feeding rollers is composed of a guide roller part and a gear part arranged coaxially along the direction perpendicular to the wire feeding direction, and multiple wire receiving grooves of different specifications are arranged circumferentially on the outer periphery of each of the guide roller parts. Within the same wire feeding wheel set, two opposing guide wheels cooperate to form the clamping channel, and two opposing gears mesh with each other; the drive wheel set meshes with two gears located in the lower layer of the two wire feeding wheel sets for transmission.

[0011] As a further improvement of the present invention, a mounting frame is fixedly installed between the two sets of wire feeding wheels inside the wire feeder housing, and a through hole is formed in the mounting frame along the wire feeding direction; guide tubes are respectively installed in the clamping channels of the two sets of wire feeding wheels corresponding to the through hole; the guide tube, the through hole, the clamping channel, the wire input port and the wire output port are all coaxially arranged along the wire feeding direction.

[0012] As a further improvement of the present invention, the clamping pressure adjustment module includes a pressure arm body and an adjustment knob, wherein the pressure wheel is rotatably mounted in the middle of the pressure arm body; The wire feeder housing is provided with a mounting base between the two clamping pressure adjustment modules. The left and right sides of the mounting base are respectively rotatably connected to the hinge ends of the pressure arm bodies corresponding to the clamping pressure adjustment modules on both sides through rotating shafts. A torsion spring is abutted between the hinge end of the pressure arm body and the wire feeder housing. The torsion spring is used to provide elastic restoring force to the pressure arm body. The top of the wire feeder housing is provided with mounting grooves corresponding to the free ends of the two pressure arm bodies. Each free end of the two pressure arm bodies has a U-shaped clearance notch. The bottom of the adjustment knob is assembled into the corresponding mounting groove by a pin. The adjustment part of the adjustment knob abuts against the top surface of the pressure arm body. Rotating the adjustment knob can press down the front end of the pressure arm body, causing the pressure arm body to swing around the pivot, so as to adjust the clamping channel gap between the pressure roller and the wire feed roller.

[0013] As a further improvement of the present invention, a scale indicator ring is provided on the outer side of the adjustment part of the adjustment knob, and the surface of the scale indicator ring is marked with pressure scale markings adapted to different diameters and types of welding wires.

[0014] As a further improvement of the present invention, the wire feeding and positioning module includes a positioning frame, a wire feeding positioning wheel, and a wire feeding guide. The positioning frame is assembled at the wire input port of the wire feeder housing, and the wire feed guide is connected to the wire feed side of the positioning frame. Three sets of wire feed positioning wheels are arranged in a triangular distribution inside the positioning frame, and each of the wire feed positioning wheels has a wire receiving groove on its outer circumference. The wire receiving grooves of the three sets of wire feed positioning wheels cooperate with each other to form a limiting channel. The wire introduced by the wire feed guide passes through the limiting channel and is fed into the clamping channel inside the wire feeder housing.

[0015] This invention also discloses a method for auxiliary wire feeding of barrel-type welding wire, which is applied to the above-mentioned auxiliary wire feeder for barrel-type welding wire, comprising: Step S1, Pre-positioning and guiding of welding wire: The end of the barrel-type welding wire is radially limited and straightened by the limiting channel formed by the wire feeding guide tube of the wire feeding positioning module and the triangular distributed wire feeding positioning wheel, which constrains the conveying trajectory, and then it is fed into the clamping channel of the wire feeding correction clamping module. Step S2, Clamping pressure adaptation adjustment: According to the diameter and type of the welding wire to be fed, adjust the clamping channel gap between the pressure roller and the wire feeding roller in the wire feeding roller group through two sets of clamping pressure adjustment modules, and continuously apply a pre-tight clamping force towards the wire feeding roller to the pressure roller; Step S3, Pneumatic drive continuous wire feeding: Start the pneumatic drive mechanism, drive the two sets of wire feeding wheel sets through the drive wheel set, and clamp the welding wire with the pressure rollers through the front and rear sets of wire feeding wheel sets to form a dual-stage continuous wire feeding power to achieve stable and uniform wire feeding. Step S4, Secondary Guide Correction in the Middle Section: After the welding wire is fed by the front wire feeding wheel set, it passes through the guide tube coaxially set between the two sets of wire feeding wheels to complete the secondary straight line limit correction, effectively eliminating the shaking and swaying problems during long-distance wire feeding and ensuring the straightness of wire feeding. Step S5, Stable and continuous wire feeding: The welding wire is continuously pulled by the rear wire feeding wheel group and is smoothly fed out from the welding wire output port, completing the high-precision and continuous auxiliary wire feeding operation of the barrel-type welding wire.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention abandons the traditional electric drive and electrical synchronization control structure, adopting a pure pneumatic mechanical transmission method, eliminating the need for external circuits and electrical signal synchronization. It fundamentally eliminates problems such as uneven wire feeding, wire feeding jitter, and coordination lag caused by electrical signal delay and synchronization deviation. It can stably output wire feeding power, ensuring uniform wire delivery, improving the synchronization efficiency of main and auxiliary wire feeding, effectively avoiding welding quality defects caused by unstable wire feeding, and is suitable for continuous batch production conditions in robotic arc welding.

[0017] This invention addresses the problems of large distances between the welding wire hopper and welding torch at arc welding stations and high resistance in long pipelines. It incorporates a front-mounted auxiliary wire feeding structure at the wire hopper's outlet end, applying pushing force from the source to effectively counteract pipeline resistance. This overcomes the shortcomings of relying solely on the insufficient pulling force of a robotic three-axis wire feeder, eliminating welding problems such as arc interruption and porosity caused by wire feeding jams and blockages. Simultaneously, it significantly reduces the traction load on the robotic wire feeder, minimizing equipment wear and tear, extending equipment lifespan, and stabilizing weld quality.

[0018] This invention utilizes a front positioning module, a central guide structure, and dual adjustable wire feeding rollers to form a multi-stage limiting and correction system. Compared to traditional single-roller unidirectional pressure structures, this system effectively constrains the wire feeding trajectory, suppresses wire swaying and deviation, improves wire straightness, and ensures uniform force on the wire. Furthermore, the invention includes an independent pressure adjustment module, allowing for precise adjustment of the clamping gap and preload according to the wire specifications. This prevents slippage and stalling due to excessive clamping while avoiding damage to the wire from excessive clamping, thus meeting the requirements of high-precision welding.

[0019] This invention adopts a modular integrated layout, with the wire feeding, straightening, clamping, pressure adjustment, and wire feeding positioning modules independently arranged and precisely coordinated, solving the problems of poor modularity, low assembly accuracy, and insufficient stability of traditional equipment. Simultaneously, this invention features multi-specification welding wire receiving grooves and adjustable clamping channels, adaptable to the feeding of various diameters and types of barrel-type welding wires, offering wide applicability and strong compatibility, effectively reducing equipment modification and maintenance costs, and enhancing the practical value of the equipment. Attached Figure Description

[0020] Figure 1 This is an exploded view of the structure of a barrel-type welding wire auxiliary wire feeder disclosed in one embodiment of the present invention; Figure 2 This is an axial view of the internal structure of a drum-type welding wire auxiliary feeder disclosed in one embodiment of the present invention; Figure 3 This is a front view of the internal structure of a drum-type welding wire auxiliary feeder disclosed in an embodiment of the present invention.

[0021] In the picture: 1. Wire feeder housing; 1-1. Welding wire input port; 1-2. Welding wire output port; 2. Wire feeder dust cover; 3. Vane-type pneumatic motor; 4. Pressure roller; 5. Wire feed roller; 6. Drive wheel set; 7. Gear section; 8. Mounting bracket; 8-1. Through hole; 9. Pressure arm body; 9-1. U-shaped clearance notch; 10. Adjustment knob; 11. Rotary shaft; 12. Torsion spring; 13. Guide tube; 14. Mounting groove; 15. Mounting base; 16. Insulating positioning plate; 17. Positioning frame; 18. Wire feed guide tube; 19. Wire feed positioning roller; 20. Mounting seat; 21. Guide roller section. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings: Example 1

[0026] like Figure 1-3 As shown, an auxiliary wire feeder for barrel-type welding wire provided by the present invention is disposed at the discharge end of the welding wire barrel, including a wire feeding and straightening clamping module, a clamping pressure adjustment module, and a wire feeding positioning module. The wire feeding and straightening clamping module includes a wire feeder housing and a pneumatic drive mechanism mounted on the outside of the wire feeder housing. A welding wire input port 1-1 and a welding wire output port 1-2 are respectively provided at both ends of the wire feeder housing. A drive wheel set 6 and two sets of wire feeding wheels are disposed inside the wire feeder housing. The pneumatic drive mechanism is driven by the drive wheel set 6 and each set of wire feeding wheels. The two sets of wire feeding wheels are arranged sequentially along the welding wire conveying direction, and each set of wire feeding wheels... Each wheel set consists of a pressure roller 4 and a wire feeding roller 5 arranged opposite each other, forming a clamping channel for the welding wire to pass through. The clamping pressure adjustment module is assembled one-to-one with the two sets of wire feeding wheel sets, and each clamping pressure adjustment module is connected to the pressure roller 4 of the corresponding wire feeding wheel set. The clamping pressure adjustment module is used to adjust the gap of the clamping channel in the corresponding wire feeding wheel set and continuously apply a pre-tight clamping force to the pressure roller 4 towards the wire feeding roller 5. The wire feeding positioning module is assembled at the welding wire input port 1-1 of the wire feeder housing to limit and guide the feeding of the welding wire, so that the welding wire is accurately fed into the clamping channel inside the wire feeder housing.

[0027] Specifically: like Figure 1-3 As shown, in the above embodiment, preferably, it further includes an L-shaped mounting base 15, the vertical section of which constitutes a mounting and positioning base for fixing the wire feeder housing and the pneumatic drive mechanism, and the horizontal section of which constitutes a transition mounting bracket for fixing to the mounting platform; an insulating positioning plate 16 is also provided between the vertical section of the mounting base 15 and the wire feeder housing, and the drive end of the pneumatic drive mechanism passes through the mounting base 15, the insulating positioning plate 16, and the wire feeder housing in sequence, and is then connected to the drive wheel set 6 for transmission. In this embodiment, the pneumatic drive mechanism is a vane-type pneumatic motor 3.

[0028] In the above embodiments, preferably, the wire feeder housing includes a wire feeder outer shell 1 and a wire feeder dust cover 2. One side of the wire feeder outer shell 1 is open, and an internal mounting cavity is formed for mounting the drive wheel assembly 6 and two sets of wire feeding wheels. The wire feeder dust cover 2 is fitted onto the open side of the wire feeder outer shell 1. In this embodiment, the back of the wire feeder outer shell 1 is mounted on the vertical section of the L-shaped mounting base 15 via an insulating positioning plate 16. The side of the wire feeder outer shell 1 away from the insulating positioning plate 16 is open, and an internal mounting cavity is formed. The shape of the mounting cavity is adapted to the shape of the internal mounting components.

[0029] In the above embodiments, preferably, each pressure roller 4 and wire feeding roller 5 includes a guide roller portion 21 and a gear portion 7 arranged coaxially along the direction perpendicular to the wire feeding direction. Each guide roller portion 21 has multiple circumferentially arranged wire receiving grooves of different specifications to meet the working conditions of different specifications of welding wire. In the same wire feeding roller group, two guide roller portions 21 arranged opposite each other at the top and bottom cooperate to form a clamping channel, and two gear portions 7 arranged opposite each other at the top and bottom can mesh with each other to realize the synchronous rotation of the pressure roller 4 and the wire feeding roller 5. The drive wheel group 6 meshes with the two gear portions 7 located in the lower layer of the two sets of wire feeding roller groups to drive the synchronous rotation of the two sets of wire feeding roller groups.

[0030] In the above embodiment, preferably, a mounting frame 8 is fixedly installed between two sets of wire feeding wheels inside the wire feeder housing. A through hole 8-1 is formed inside the mounting frame 8 along the wire feeding direction. Guide tubes 13 are installed in the clamping channels of the two sets of wire feeding wheels corresponding to the through hole 8-1. The guide tubes 13, through hole 8-1, clamping channels, wire input port 1-1, and wire output port 1-2 are all coaxially arranged along the wire feeding direction. Guide tubes 13 are provided inside the wire feeder housing at both the wire input port 1-1 and the wire output port 1-2, and all guide tubes 13 have a constricted end facing the clamping channel. In this embodiment, the guide tube 13, the clamping channel of the wire feeding wheel set, the guide tube 13, the mounting frame 8, the guide tube 13, the clamping channel of the other wire feeding wheel set, and the guide tube 13 are sequentially arranged from the wire input port 1-1 to the wire output port 1-2 to achieve effective wire feeding and clamping correction.

[0031] In the above embodiments, preferably, the clamping pressure adjustment module includes a pressure arm body 9 and an adjustment knob 10. A pressure roller 4 is rotatably mounted in the middle of the pressure arm body 9. A mounting base 20 is provided between the two clamping pressure adjustment modules on the wire feeder housing. The left and right sides of the mounting base 20 are rotatably connected to the hinged ends of the pressure arm bodies 9 corresponding to the two clamping pressure adjustment modules via rotating shafts 11. The axis of the rotating shafts 11 is perpendicular to the wire feeding direction. A torsion spring 12 abuts against the hinged end of the pressure arm body 9 and the wire feeder housing. 12 is used to provide elastic restoring force to the pressure arm body 9; the top of the wire feeder housing is provided with mounting grooves 14 corresponding to the free ends of the two pressure arm bodies 9, and the free ends of the two pressure arm bodies 9 are provided with U-shaped clearance notches 9-1. The bottom of the adjusting knob 10 is assembled into the corresponding mounting groove 14 by a pin, and the adjusting part of the adjusting knob 10 abuts against the top surface of the pressure arm body 9; rotating the adjusting knob 10 can press down the front end of the pressure arm body 9, driving the pressure arm body 9 to swing around the rotating shaft 11, so as to adjust the clamping channel gap between the pressure roller 4 and the wire feeding roller 5. In this embodiment, a scale indicator ring is provided on the outside of the adjusting part of the adjusting knob 10, and the surface of the scale indicator ring is marked with pressure scale markings adapted to different diameters and types of welding wires. In this embodiment, by adjusting the bottom pin connection of the adjustment knob 10, the adjustment knob 10 can be swung, thereby causing the adjustment knob 10 to engage or disengage from the U-shaped clearance notch 9-1 of the pressure arm body 9. When the adjustment knob 10 disengages from the U-shaped clearance notch 9-1, the pressure arm body 9 on the corresponding side can drive the pressure roller 4 installed in its middle to lift upward, releasing the clamping channel space.

[0032] In the above embodiment, preferably, the wire feeding and positioning module includes a positioning frame 17, wire feeding positioning wheels 19, and wire feeding guide tube 18; wherein, the positioning frame 17 is assembled on the wire input port 1-1 of the wire feeder housing, and the wire feeding guide tube 18 is connected to the wire feeding side of the positioning frame 17; three sets of wire feeding positioning wheels 19 are arranged in a triangular distribution in the positioning frame 17, and each wire feeding positioning wheel 19 is provided with a wire receiving groove on its outer periphery; the wire receiving grooves of the three sets of wire feeding positioning wheels 19 cooperate with each other to form a limiting channel, and the wire fed through the wire feeding positioning wheels 19 passes through the limiting channel and is fed into the clamping channel in the wire feeder housing. Example 2

[0033] According to the present invention, a method for auxiliary wire feeding of barrel-type welding wire is provided, which is applied to the above-mentioned auxiliary wire feeding machine for barrel-type welding wire, comprising: Step S1, Pre-positioning and guiding of welding wire: The end of the barrel-type welding wire is radially limited and straightened by the limiting channel formed by the wire feeding guide tube 18 of the wire feeding positioning module and the triangular distributed wire feeding positioning wheel 19, constraining the conveying trajectory, and then fed into the clamping channel of the wire feeding correction clamping module. Step S2, Clamping pressure adaptation adjustment: According to the diameter and type of the welding wire to be fed, the clamping channel gap between the pressure roller 4 and the wire feeding roller 5 in the wire feeding roller group is adjusted through two sets of clamping pressure adjustment modules, and a pre-tight clamping force is continuously applied to the pressure roller 4 toward the wire feeding roller 5. Step S3, Pneumatic drive continuous wire feeding: Start the pneumatic drive mechanism, drive the two sets of wire feeding wheel sets through the drive wheel set 6, and clamp and pull the welding wire through the front and rear two sets of wire feeding wheels 5 and the pressure wheel 4 to form a dual-stage continuous wire feeding power to achieve stable and uniform wire feeding. Step S4, Secondary Guide Correction in the Middle Section: After the welding wire is fed by the front wire feeding wheel set, it passes through the guide tube 13 coaxially set between the two sets of wire feeding wheels to complete the secondary straight line limit correction, effectively eliminating the shaking and swaying problems during long-distance wire feeding and ensuring the straightness of wire feeding. Step S5, Stable and continuous wire feeding: The welding wire is continuously pulled by the rear wire feeding wheel group and is smoothly fed out from the welding wire output port 1-2, completing the high-precision and continuous auxiliary wire feeding operation of the barrel-type welding wire.

[0034] In the above embodiments, preferably, according to the diameter and type of the welding wire to be fed, the corresponding specifications of the welding wire receiving grooves on the pressure roller 4 and the wire feeding roller 5 are selected, and the downward stroke of the pressure arm body 9 is adjusted by the adjustment knobs 10 of the two sets of clamping pressure adjustment modules to change the clamping channel gap between the pressure roller 4 and the wire feeding roller 5, so as to realize the adaptability processing of welding wires of different specifications.

[0035] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An auxiliary wire feeder for barrel-type welding wire, which is installed at the discharge end of the welding wire barrel, characterized in that, include: The wire feeding and straightening clamping module includes a wire feeder housing and a pneumatic drive mechanism mounted on the outside of the wire feeder housing. The wire feeder housing has a wire input port and a wire output port at its two ends. Inside the wire feeder housing are a drive wheel assembly and two sets of wire feeding wheel assemblies. The pneumatic drive mechanism is driven by the drive wheel assembly and each of the wire feeding wheel assemblies. The two sets of wire feeding wheel assemblies are arranged sequentially along the wire feeding direction. Each set of wire feeding wheel assemblies consists of a pressure roller and a wire feeding roller arranged opposite each other, forming a clamping channel for the wire to pass through between the pressure roller and the wire feeding roller. The clamping pressure adjustment module is assembled one-to-one with the two sets of wire feeding wheel sets. Each clamping pressure adjustment module is connected to the pressure wheel of the corresponding wire feeding wheel set. The clamping pressure adjustment module is used to adjust the clamping channel gap in the corresponding wire feeding wheel set and continuously apply a pre-tight clamping force towards the wire feeding wheel to the pressure wheel. The wire feeding and positioning module is installed at the wire input port of the wire feeder housing to limit and guide the wire feeding, so that the wire is accurately fed into the clamping channel inside the wire feeder housing.

2. The auxiliary wire feeder for barrelled welding wire according to claim 1, characterized in that, It also includes an L-shaped mounting base, the vertical section of which forms a mounting and positioning base for fixing the wire feeder housing and the pneumatic drive mechanism, and the horizontal section of which forms a transition mounting bracket fixed to the mounting platform; an insulating positioning plate is also provided between the vertical section of the mounting base and the wire feeder housing, and the drive end of the pneumatic drive mechanism passes through the mounting base, the insulating positioning plate and the wire feeder housing in sequence, and is then connected to the drive wheel set for transmission.

3. The auxiliary wire feeder for barrelled welding wire according to claim 1 or 2, characterized in that, The pneumatic drive mechanism is a vane-type pneumatic motor.

4. The auxiliary wire feeder for barrelled welding wire according to claim 1, characterized in that, The wire feeder housing includes a wire feeder outer shell and a wire feeder dust cover. One side of the wire feeder outer shell is open, and an installation cavity is formed inside for installing the drive wheel assembly and two sets of wire feeder wheels. The wire feeder dust cover is fitted onto the open side of the wire feeder outer shell.

5. The auxiliary wire feeder for barrelled welding wire according to claim 1, characterized in that, Each of the pressure rollers and wire feeding rollers is composed of a guide roller section and a gear section arranged coaxially along the direction perpendicular to the wire feeding direction. Multiple wire receiving grooves of different specifications are arranged circumferentially on the outer periphery of each guide roller section. Within the same wire feeding wheel set, two opposing guide wheels cooperate to form the clamping channel, and two opposing gears mesh with each other; the drive wheel set meshes with two gears located in the lower layer of the two wire feeding wheel sets for transmission.

6. The auxiliary wire feeder for barrelled welding wire according to claim 1, characterized in that, An mounting frame is fixedly installed between the two sets of wire feeding wheels inside the housing of the wire feeder. A through hole is formed in the mounting frame along the wire feeding direction. Guide tubes are installed in the clamping channels of the two sets of wire feeding wheels corresponding to the through hole. The guide tubes, through holes, clamping channels, wire input port and wire output port are all coaxially arranged along the wire feeding direction.

7. The auxiliary wire feeder for barrelled welding wire according to claim 1, characterized in that, The clamping pressure adjustment module includes a pressure arm body and an adjustment knob, and the pressure roller is rotatably mounted in the middle of the pressure arm body; The wire feeder housing is provided with a mounting base between the two clamping pressure adjustment modules. The left and right sides of the mounting base are respectively rotatably connected to the hinge ends of the pressure arm bodies corresponding to the clamping pressure adjustment modules on both sides through rotating shafts. A torsion spring is abutted between the hinge end of the pressure arm body and the wire feeder housing. The torsion spring is used to provide elastic restoring force to the pressure arm body. The top of the wire feeder housing is provided with mounting grooves corresponding to the free ends of the two pressure arm bodies. Each free end of the two pressure arm bodies has a U-shaped clearance notch. The bottom of the adjustment knob is assembled into the corresponding mounting groove by a pin. The adjustment part of the adjustment knob abuts against the top surface of the pressure arm body. Rotating the adjustment knob can press down the front end of the pressure arm body, causing the pressure arm body to swing around the pivot, so as to adjust the clamping channel gap between the pressure roller and the wire feed roller.

8. The auxiliary wire feeder for barrelled welding wire according to claim 7, characterized in that, The adjustment knob has a scale indicator ring on its outer side, and the surface of the scale indicator ring is marked with pressure scale markings to adapt to different diameters and types of welding wires.

9. The auxiliary wire feeder for barrelled welding wire according to claim 1, characterized in that, The wire feeding and positioning module includes a positioning frame, wire feeding positioning wheels, and wire feeding guide tube; The positioning frame is assembled at the wire input port of the wire feeder housing, and the wire feed guide is connected to the wire feed side of the positioning frame. Three sets of wire feed positioning wheels are arranged in a triangular distribution inside the positioning frame, and each of the wire feed positioning wheels has a wire receiving groove on its outer circumference. The wire receiving grooves of the three sets of wire feed positioning wheels cooperate with each other to form a limiting channel. The wire introduced by the wire feed guide passes through the limiting channel and is fed into the clamping channel inside the wire feeder housing.

10. A method for auxiliary wire feeding of barrel-type welding wire, applied to the barrel-type welding wire auxiliary wire feeder according to any one of claims 1-9, characterized in that, include: Step S1, Pre-positioning and guiding of welding wire: The end of the barrel-type welding wire is radially limited and straightened by the limiting channel formed by the wire feeding guide tube of the wire feeding positioning module and the triangular distributed wire feeding positioning wheel, which constrains the conveying trajectory, and then it is fed into the clamping channel of the wire feeding correction clamping module. Step S2, Clamping pressure adaptation adjustment: According to the diameter and type of the welding wire to be fed, adjust the clamping channel gap between the pressure roller and the wire feeding roller in the wire feeding roller group through two sets of clamping pressure adjustment modules, and continuously apply a pre-tight clamping force towards the wire feeding roller to the pressure roller; Step S3, Pneumatic drive continuous wire feeding: Start the pneumatic drive mechanism, drive the two sets of wire feeding wheel sets through the drive wheel set, and clamp the welding wire with the pressure rollers through the front and rear sets of wire feeding wheel sets to form a dual-stage continuous wire feeding power to achieve stable and uniform wire feeding. Step S4, Secondary Guide Correction in the Middle Section: After the welding wire is fed by the front wire feeding wheel set, it passes through the guide tube coaxially set between the two sets of wire feeding wheels to complete the secondary straight line limit correction, effectively eliminating the shaking and swaying problems during long-distance wire feeding and ensuring the straightness of wire feeding. Step S5, Stable and continuous wire feeding: The welding wire is continuously pulled by the rear wire feeding wheel group and is smoothly fed out from the welding wire output port, completing the high-precision and continuous auxiliary wire feeding operation of the barrel-type welding wire.

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