Wire feeding mechanism of carbon dioxide gas shielded welding machine

Abstract

The utility model discloses a wire feeding mechanism of a carbon dioxide gas shielded welder, which relates to the technical field of carbon dioxide gas shielded welders and comprises a base and a support plate fixedly mounted on the outer top of the base, and a U-shaped support and a rectangular frame are fixedly mounted at the front end and the middle end of the outer side wall of one side of the support plate respectively. And meanwhile, a discharging roller is rotationally connected to the rear end of the outer side wall of one face of the supporting plate, and a compacting assembly used for correcting welding wires of different specifications is arranged in the U-shaped support. The transverse plate is driven by the threaded rod to move upwards, welding wires with different diameters penetrate through the wire feeding wheel, then the wire pressing wheel moves downwards along the first sliding groove, the wire pressing wheel is pressed close to the wire feeding wheel, and therefore the welding wires with the different diameters can be limited and fixed in the vertical direction; and the welding wires are limited in the left-right direction, so that the welding wires with different diameters can be better prevented from deflecting and falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon dioxide gas shielded welding machines, in particular to a wire feeding mechanism of a carbon dioxide gas shielded welding machine. Background Art

[0002] The carbon dioxide gas shielded welding machine is a consumable arc welding method that uses CO2 as the shielding gas. When working, a gas protection layer is formed around the arc to isolate external oxygen, so that the weld will not be oxidized and carbonized, thereby improving the quality of the weld and making the welding surface more beautiful and smooth. It can be used for high-quality welding of materials such as carbon steel, low-alloy steel, stainless steel, aluminum and its alloys. The wire feeding mechanism refers to the mechanism that feeds the welding wire according to the need, which is an important component of the carbon dioxide gas shielded welding machine.

[0003] For example, the Chinese patent publication number CN214978405U discloses a wire feeding mechanism in a carbon dioxide gas shielded welding machine, including a welding machine, a wire feeding device and a first rotating shaft, wherein the internal movable connection of the welding machine is provided with a wire rolling disk, and the inner wall of the welding machine is fixedly provided with a wire feeding device. In the above-mentioned public document, the first wire wheel and the second wire wheel are designed. When the device is used normally, the motor is first driven, and then the first rotating shaft and the second wire wheel deliver the welding wire to the connecting hole by rolling. When the wire is blocked, the plug is pressed to block the limiting hole on the third rotating shaft to stop the wire feeding activity of the device, so as to prevent the welding machine from being unusable due to wire entanglement, and the problem can be solved in time to improve the work efficiency. However, when the patent is used, it is not conducive to effectively limit and prevent deviation of welding wires of different diameters, thereby causing the use range of the mechanism to be small, thereby reducing the work efficiency of the welding wire. To this end, those skilled in the art provide a wire feeding mechanism for a carbon dioxide gas shielded welding machine to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a wire feeding mechanism for a carbon dioxide gas shielded welding machine, which solves the problem raised in the above background technology that it is not conducive to effective limiting and anti-deviation of welding wires of different diameters, thereby resulting in a small range of use of the mechanism, thereby reducing the working efficiency of the welding wire.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a wire feeding mechanism of a carbon dioxide gas shielded welding machine, comprising a base and a support plate fixedly installed on the top of the base, and the front end and the middle end of one side of the outer wall of the support plate are respectively fixedly installed with a U-shaped bracket and a rectangular frame, and at the same time, a discharge roller is rotatably connected to the rear end of one side of the outer wall of the support plate, and a compacting component for correcting welding wires of different specifications is arranged inside the U-shaped bracket;

[0006] The compaction assembly includes wire feeding wheels rotatably connected to the bottom of the outer side wall of the U-shaped bracket at equal intervals, and a driving shaft rod is fixedly connected to the outer side wall of one set of the wire feeding wheels. At the same time, one end of the driving shaft rod penetrates through the U-shaped bracket and extends to the outer side wall of the other side of the support plate;

[0007] An anti-deviation assembly for limiting the welding wire is further provided inside the rectangular frame;

[0008] Limit circular plates are sleeved on the outer peripheral surfaces of both sides of the wire feeding roller.

[0009] As a further technical solution of the present invention, a fixing plate is fixedly connected to the center position of the inner bottom surface of the U-shaped bracket and on the outer side wall of the support plate. First sliding grooves are symmetrically opened on both outer side walls of the fixing plate and on both inner side walls of the U-shaped bracket. At the same time, sliders are slidably connected to the inner sides of the two first sliding grooves, and wire pressing wheels are rotatably connected to the outer side walls of the two sliders.

[0010] As a further technical solution of the present invention, connecting rods are fixedly installed on the outer tops of the two sliders, a cross plate is jointly installed on the outer tops of the two connecting rods, a threaded rod is rotatably connected to the center position of the outer top of the cross plate through a rotating sleeve, and one end of the threaded rod penetrates through the cross plate and is rotatably connected to the outer top of the fixing plate. At the same time, the two ends of the outer bottom of the cross plate and the two ends of the outer top of the U-shaped bracket are slidably connected to each other through guide rods.

[0011] As a further technical solution of the present invention, the anti-deviation assembly includes second sliding grooves that are penetratingly opened on the outer top and outer bottom of the rectangular frame. Reset springs are fixedly connected to the inner side walls of both sides of the two second sliding grooves through stabilizing blocks. One end of the reset spring is fixedly connected to a sliding seat that slides inside the two second sliding grooves respectively. At the same time, two limiting rollers are rotatably connected to the corresponding outer surfaces of the four sliding seats.

[0012] As a further technical solution of the present invention, one end of the wire feeding roller penetrates through the support plate and extends to the outer side wall of the other side of the support plate, and a first belt pulley is fixedly installed on the outer peripheral surface of the wire feeding roller. A second belt pulley is fixedly installed on the outer peripheral surface of the driving shaft rod and on the outer side wall of the other side of the support plate. The first belt pulley and the second belt pulley are rotationally connected to each other through a conveyor belt.

[0013] As a further technical solution of the present invention, a driving motor is fixedly installed on the outer side wall of the support plate corresponding to the wire feeding roller, and the output end of the driving motor is fixedly connected to one end of the wire feeding roller.

[0014] As a further technical solution of the present utility model, detachable fixing rings are sleeved on the outer peripheral surfaces at both ends of the feeding roller and on the outer side walls of the two groups of limiting circular plates, and the outer surfaces of the two groups of fixing rings are respectively in close contact with the outer side walls of the two groups of limiting circular plates.

[0015] The present utility model provides a wire feeding mechanism for a carbon dioxide gas shielded welding machine, which has the following beneficial effects compared with the prior art:

[0016] 1. When the wire feeding mechanism of the carbon dioxide gas shielded welding machine designed in this way is in use, the transverse plate is driven to move upward by the arranged threaded rod. Different diameter welding wires are passed through the wire feeding wheel, and then the wire pressing wheel is moved downward along the first sliding groove, so that the wire pressing wheel presses close to the wire feeding wheel, and the welding wires with different diameters can be limited and fixed in the up and down directions. At the same time, under the mutual cooperation of the return spring and the limiting roller, the welding wires are limited in the left and right directions, so as to better prevent the welding wires with different diameters from deflecting and falling off, thus avoiding affecting the subsequent processing efficiency of the welding wires.

[0017] 2. When the wire feeding mechanism of the carbon dioxide gas shielded welding machine designed in this way is feeding wire, the arranged driving motor is used as the power source, and under the mutual cooperation of the first belt pulley, the second belt pulley and the conveyor belt, the wire feeding wheel can synchronously perform the wire feeding work when the feeding roller releases the wire, so as to improve the wire feeding efficiency. Description of the Drawings

[0018] Figure 1 It is the first three-dimensional structure schematic diagram of a wire feeding mechanism for a carbon dioxide gas shielded welding machine;

[0019] Figure 2 It is the second three-dimensional structure schematic diagram of a wire feeding mechanism for a carbon dioxide gas shielded welding machine;

[0020] Figure 3 It is the overall structure decomposition schematic diagram of a wire feeding mechanism for a carbon dioxide gas shielded welding machine.

[0021] In the figure: 1. Base; 2. Support plate; 3. U-shaped bracket; 4. Rectangular frame; 5. Feeding roller; 6. Wire feeding wheel; 7. Driving shaft rod; 8. Limiting circular plate; 9. Fixed plate; 10. First sliding groove; 11. Slide block; 12. Wire pressing wheel; 13. Connecting rod; 14. Transverse plate; 15. Threaded rod; 16. Guide rod; 17. Second sliding groove; 18. Return spring; 19. Slide seat; 20. Limiting roller; 21. First belt pulley; 22. Second belt pulley; 23. Conveyor belt; 24. Driving motor; 25. Fixing ring. Detailed Embodiment

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-3 , the present invention provides a wire feeding mechanism technical solution for a carbon dioxide shielded welding machine: including a base 1 and a support plate 2 fixedly installed on the outer top of the base 1, and a U-shaped bracket 3 and a rectangular frame 4 are respectively fixedly installed at the front end and the middle end of the outer side wall of one side of the support plate 2. At the same time, a feeding roller 5 is rotatably connected to the rear end of the outer side wall of one side of the support plate 2. A compaction assembly for correcting welding wires of different specifications is arranged inside the U-shaped bracket 3. The compaction assembly includes wire feeding wheels 6 rotatably connected at equal intervals to the bottom of the outer side wall of the U-shaped bracket 3. A fixing plate 9 is fixedly connected to the center position of the inner bottom surface of the U-shaped bracket 3 and on the outer side wall of the support plate 2. First sliding grooves 10 are symmetrically opened on the outer side walls of both sides of the fixing plate 9 and on the inner side walls of both sides of the U-shaped bracket 3. And sliders 11 are slidably connected to the inner sides of the two first sliding grooves 10. At the same time, a wire pressing wheel 12 is rotatably connected to the outer side walls of the two sliders 11. Connecting rods 13 are fixedly installed on the outer tops of the two sliders 11. A cross plate 14 is jointly installed on the outer tops of the two connecting rods 13. A threaded rod 15 is rotatably connected to the center position of the outer top of the cross plate 14 through a rotating sleeve. And one end of the threaded rod 15 penetrates through the cross plate 14 and is rotatably connected to the outer top of the fixing plate 9. At the same time, the two ends of the outer bottom of the cross plate 14 and the two ends of the outer top of the U-shaped bracket 3 are slidably connected to each other through guide rods 16. When performing limiting, first turn the threaded rod 15 so that the cross plate 14 drives the wire pressing wheel 12 on the slider 11 to move upward along the first sliding groove 10 through the connecting rod 13. Then, the welding wire on the feeding roller 5 is sequentially passed through the rectangular frame 4 and the wire feeding wheels 6. After that, turn the threaded rod 15 again so that the cross plate 14 drives the wire pressing wheel 12 on the slider 11 to move downward through the connecting rod 13, and make the wire pressing wheel 12 press closer to the wire feeding wheels 6, so as to limit and fix the welding wire of different diameters in the up and down directions, thereby reducing the possibility of the welding wire deflecting and breaking during the wire feeding process.

[0024] Inside the rectangular frame 4, there is also an anti-deviation component for limiting the wire electrode. The anti-deviation component includes a second chute 17 that penetrates through the outer top and outer bottom of the rectangular frame 4. On the inner side walls of both sides of the two groups of second chutes 17, a return spring 18 is fixedly connected through a stabilizing block. One end of the return spring 18 is fixedly connected to a sliding seat 19 that slides inside the two groups of second chutes 17. At the same time, two groups of limiting rollers 20 are rotatably connected to the corresponding outer surfaces of the four groups of sliding seats 19. When feeding wire electrodes of different diameters, under the elastic action of the return spring 18, the sliding seat 19 slides in the second chute 17, so that the outer peripheral surface of the limiting roller 20 slidably abuts against the outer surface of the wire electrode of different diameters, thereby being able to limit the wire electrode of different diameters in the left-right direction and further preventing the wire electrode from deflecting and falling off.

[0025] And on the outer side wall of one of the wire feeding wheels 6, a driving shaft rod 7 is fixedly connected. At the same time, one end of the driving shaft rod 7 penetrates through the U-shaped bracket 3 and extends to the outer side wall of the other side of the support plate 2. Limiting circular plates 8 are sleeved on the outer peripheral surfaces of both sides of the wire feeding roller 5. One end of the wire feeding roller 5 penetrates through the support plate 2 and extends to the outer side wall of the other side of the support plate 2. And a first pulley 21 is fixedly installed on the outer peripheral surface of the wire feeding roller 5. A second pulley 22 is fixedly installed on the outer peripheral surface of the driving shaft rod 7 and on the outer side wall of the other side of the support plate 2. The first pulley 21 and the second pulley 22 are rotatably connected to each other through a conveyor belt 23. A driving motor 24 is fixedly installed on the outer side wall of the support plate 2 corresponding to the wire feeding roller 5. The output end of the driving motor 24 is fixedly connected to one end of the wire feeding roller 5. Removable fixed rings 25 are sleeved on the outer peripheral surfaces of both ends of the wire feeding roller 5 and on the outer side walls of the two groups of limiting circular plates 8. The corresponding outer surfaces of the two groups of fixed rings 25 are respectively in close contact with the outer side walls of the two groups of limiting circular plates 8. Through the removable fixed rings 25, the limiting circular plates 8 can be quickly removed from the wire feeding roller 5, thereby facilitating the replacement of wire electrodes of different diameters. After the wire electrode is replaced, immediately start the driving motor 24, which drives the wire feeding roller 5 to rotate and at the same time drives the first pulley 21 to rotate. Under the cooperation of the conveyor belt 23, the second pulley 22 on the driving shaft rod 7 is synchronously driven to rotate, so that when the wire feeding roller 5 feeds the wire, the wire feeding wheel 6 can synchronously perform the wire feeding work, thereby improving the working efficiency of wire feeding.

[0026] The working principle of the present utility model is as follows: When in use, first remove the limiting circular plate 8 from the wire feeding roller 5, wind the wire electrode of different diameters on the wire feeding roller 5 according to needs, then close the limiting circular plate 8 to limit the wire electrode, and at the same time fixedly sleeve the fixed ring 25 on the wire feeding roller 5 to limit the limiting circular plate 8.

[0027] At the same time, the threaded rod 15 is twisted so that the cross plate 14 drives the wire pressing wheel 12 on the slider 11 to move upward along the first slide groove 10 through the connecting rod 13, and then the welding wire on the discharge roller 5 passes through the rectangular frame 4 and the wire feeding wheel 6 in turn. When passing through the rectangular frame 4, under the elastic action of the reset spring 18, the slide seat 19 slides in the second slide groove 17, so that the outer peripheral surface of the limiting roller 20 and the outer surface of the welding wires of different diameters slide and abut against each other, thereby limiting the left and right directions of the welding wires of different diameters.

[0028] At the same time, after the welding wire passes through the wire feeding wheel 6, the threaded rod 15 is screwed again so that the cross plate 14 drives the wire pressing wheel 12 on the slider 11 to move downward through the connecting rod 13, so that the wire pressing wheel 12 is pressed toward the wire feeding wheel 6, so that welding wires of different diameters can be limited and fixed in the upper and lower directions.

[0029] Then, the driving motor 24 is started to drive the first pulley 21 on the discharge roller 5 and, under the connection with the conveyor belt 23, synchronously drive the second pulley 22 on the wire feeding wheel 6 to work in linkage, so that the discharge roller 5 can allow the wire feeding wheel 6 to feed the wire synchronously when releasing the wire. At the same time, by limiting the upper and lower and left and right directions, the possibility of the welding wire deflecting and falling off during the wire feeding process is avoided, thereby improving the wire feeding efficiency.

[0030] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A wire feeding mechanism for a carbon dioxide gas shielded welding machine, characterized in that: It comprises a base (1) and a support plate (2) fixedly mounted on the top of the base (1), wherein a U-shaped bracket (3) and a rectangular frame (4) are respectively fixedly mounted on the front end and the middle end of one side of the outer wall of the support plate (2), and a discharge roller (5) is rotatably connected to the rear end of one side of the outer wall of the support plate (2), and a compacting component for correcting welding wires of different specifications is arranged inside the U-shaped bracket (3); The compacting assembly comprises wire feeding wheels (6) rotatably connected to the bottom of the outer side wall of the U-shaped bracket (3) at equal intervals, and a driving shaft (7) is fixedly connected to the outer side wall of one group of the wire feeding wheels (6), and one end of the driving shaft (7) penetrates the U-shaped bracket (3) and extends to the other outer side wall of the support plate (2); An anti-deflection component for limiting the position of the welding wire is also arranged inside the rectangular frame (4); Position limiting circular plates (8) are sleeved on the outer circumferential surfaces of both sides of the unloading roller (5).

2. A wire feeding mechanism for a carbon dioxide gas shielded welding machine according to claim 1, characterized in that: A fixing plate (9) is fixedly connected at the center position of the inner bottom surface of the U-shaped bracket (3) and on the outer side wall of the support plate (2); first sliding grooves (10) are symmetrically provided on the outer side walls of both sides of the fixing plate (9) and on the inner side walls of both sides of the U-shaped bracket (3); and sliders (11) are slidably connected to the inner sides of the two groups of the first sliding grooves (10); and wire pressing wheels (12) are rotatably connected to the outer side walls of the two groups of the sliders (11).

3. A wire feeding mechanism for a carbon dioxide gas shielded welding machine according to claim 2, characterized in that: A connecting rod (13) is fixedly installed on the outer top of the two groups of sliding blocks (11), and a transverse plate (14) is commonly installed on the outer top of the two connecting rods (13). A threaded rod (15) is rotatably connected to the center position of the outer top of the transverse plate (14) through a rotating sleeve, and one end of the threaded rod (15) passes through the transverse plate (14) and is rotatably connected to the outer top of the fixed plate (9). At the same time, the two ends of the outer bottom of the transverse plate (14) and the two ends of the outer top of the U-shaped bracket (3) are slidably connected to each other through guide rods (16).

4. The wire feeding mechanism of a carbon dioxide gas shielded welding machine according to claim 1, characterized in that: The anti-bias component comprises a second slide groove (17) which is provided on the outer top and outer bottom of the rectangular frame (4) in a through-type manner, and two sets of the second slide grooves (17) are fixedly connected to the inner side walls on both sides through stabilizing blocks with return springs (18), one end of the return spring (18) is fixedly connected to a slide seat (19) which slides inside the two sets of second slide grooves (17) respectively, and two sets of limiting rollers (20) are rotatably connected to the corresponding outer surfaces of the four sets of slide seats (19).

5. The wire feeding mechanism of a carbon dioxide gas shielded welding machine according to claim 1, characterized in that: One end of the discharge roller (5) passes through the support plate (2) and extends to the other outer wall of the support plate (2), and a first belt pulley (21) is fixedly installed on the outer peripheral surface of the discharge roller (5), and a second belt pulley (22) is fixedly installed on the outer peripheral surface of the driving shaft (7) and located on the other outer wall of the support plate (2), and the first belt pulley (21) and the second belt pulley (22) are rotatably connected to each other through a conveyor belt (23).

6. The wire feeding mechanism of a carbon dioxide gas shielded welding machine according to claim 1, characterized in that: A drive motor (24) is fixedly mounted on the outer wall of the support plate (2) corresponding to the discharge roller (5), and an output end of the drive motor (24) is fixedly connected to one end of the discharge roller (5).

7. The wire feeding mechanism of a carbon dioxide gas shielded welding machine according to claim 1, characterized in that: Removable fixing rings (25) are sleeved on the outer peripheral surfaces of both ends of the discharge roller (5) and on the outer side walls of the two groups of limiting circular plates (8), and the corresponding outer surfaces of the two groups of fixing rings (25) are respectively fitted and abutted against the outer side walls of the two groups of limiting circular plates (8).

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