Wire feeding system of carbon dioxide protection welding machine

Abstract

The utility model discloses a carbon dioxide protection welding machine wire feeding system which comprises a machine body, the tail end of the machine body is provided with a supporting shaft used for pay-off of a wire reel, a wire feeding driving unit is arranged in the machine body and comprises a driving part and an elastic pressing part, the driving part is arranged in the machine body, the elastic pressing part is connected with the driving part through a U-shaped plate, and the U-shaped plate is connected with the supporting shaft. The supporting shaft is rotationally mounted at the tail end of the body through a supporting frame; the supporting frame comprises a supporting plate and two rolling wheels, the bottom of the supporting plate is installed on one side of the tail of the machine body through a hinge piece, the two rolling wheels are rotationally installed on the other side of the tail of the machine body through rotating shafts, one end of the supporting shaft is rotationally connected with the top of the supporting plate, and the other end of the supporting shaft is erected on the two rolling wheels and limited through an anti-disengaging assembly. The welding wire pressing device can elastically press the welding wire, automatic adjustment of the pressure of the welding wire and stable wire feeding are achieved, the situation that the welding wire is deformed or cannot be fed when the pressure is too loose or too tight can be avoided, and the welding wire pressing device is suitable for the technical field of welding equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding equipment, and specifically relates to a wire feeding system of a carbon dioxide protection welding machine. Background Art

[0002] Carbon dioxide gas shielded welding machine is used for gas shielded welding of various low carbon steel and low alloy steel.

[0003] It is manufactured with advanced technology, has reliable performance and strong overload capacity, and is suitable for gas shielded welding of various low-carbon steels and low-alloy steels. The welding machine is mainly composed of six parts: welding gun, welding gun assembly, wire feeding system, welding power supply, gas supply system and control system. The wire feeding system in traditional technology usually uses one or two sets of clamping wheels to clamp and feed the welding wire of the welding machine with fixed pressure. The clamping force cannot be adjusted, which is prone to loose or gold, causing deformation of the welding wire or failure to feed the wire smoothly, affecting the welding quality. Utility Model Content

[0004] The utility model provides a carbon dioxide shielded welding machine wire feeding system, which is used to solve the problem that the wire feeding system in the traditional technology uses a fixed pressure to compress and feed the wire, and its pressing force cannot be adjusted, which is easy to cause the wire to be loose or thick, causing the welding wire to deform or fail to feed the wire smoothly, thereby affecting the welding quality.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A wire feeding system for a carbon dioxide shielded welding machine comprises a fuselage, a gas interface, a power interface and a welding adjustment knob are arranged at the front end of the fuselage, a support shaft for releasing a welding wire reel is arranged at the rear end of the fuselage, a wire feeding drive unit is arranged inside the fuselage, the wire feeding drive unit comprises a driving part and an elastic pressing part, the driving part is arranged inside the fuselage, the elastic pressing part is connected to the driving part through a U-shaped plate, and the support shaft is rotatably mounted on the rear end of the fuselage through a supporting frame;

[0007] The support frame includes a support plate and two rollers. The bottom of the support plate is installed on one side of the tail of the fuselage through a hinge. The two rollers are rotatably installed on the other side of the tail of the fuselage through a rotating shaft. One end of the support shaft is rotatably connected to the top of the support plate, and the other end of the support shaft is placed on the two rollers and limited by an anti-slip assembly.

[0008] Furthermore, the elastic clamping part includes two supporting wheels, two clamping wheels and an elastic component. The two supporting wheels are rotatably mounted on the U-shaped plate and are transmission-connected to the wire feeding drive unit. The two clamping wheels are located above the two supporting wheels and are movably mounted on the U-shaped plate through the elastic component.

[0009] Furthermore, the elastic component includes an adjusting screw, two guide rods, a fixed plate and an elastic adjusting plate. The fixed plate is fixedly installed on the top of the U-shaped plate, and the elastic adjusting plate is movably installed under the fixed plate. The two guide rods are slidably connected to the fixed plate and fixedly connected to the elastic adjusting plate after passing through the fixed plate. Two U-shaped seats are provided at the bottom of the elastic adjusting plate, and two clamping wheels are rotatably installed on the U-shaped seats. The guide rod is located between the support plate and the elastic adjusting plate and is provided with a spring on the rod body. The adjusting screw is located between the two guide rods. The adjusting screw is slidably connected to the support plate and threadedly connected to the elastic adjusting plate after passing through the support plate.

[0010] Furthermore, the wire feeding ends and wire outlet ends of the two supporting wheels and the two pressing wheels are both provided with wire feeding nozzles, and the wire feeding nozzles are fixedly arranged on the plate body at the front and rear ends of the U-shaped plate.

[0011] Furthermore, the top of the guide rod is constructed with an anti-slip step, the top of the adjusting screw is constructed with a rotary cap, two supporting wheels and two clamping wheels are correspondingly arranged, and welding wire grooves are constructed on the two supporting wheels and the two clamping wheels.

[0012] Furthermore, the articulated part adopts a hinge, and the anti-dropout component includes an arc-shaped anti-dropout buckle adapted to the support shaft, one end of the arc-shaped anti-dropout buckle is rotatably connected to the fuselage through a rotating shaft, and the other end is detachably connected to the fuselage through a butterfly nut, and a locking block adapted to the butterfly nut is provided on the other side of the fuselage.

[0013] Furthermore, the other end of the support shaft is configured with a groove, a rocker is provided in the groove, and one end of the rocker is rotatably connected to the support shaft via a rotating shaft.

[0014] Furthermore, a horizontal brace is provided on the top of the fuselage, a through hole adapted to a welding gun is constructed at the front end of the fuselage near the top, and a welding gun bracket is fixedly provided below the through hole.

[0015] As the utility model adopts the above structure, compared with the prior art, the technical progress achieved is:

[0016] The driving part provides the wire feeding power, and the welding wire passes through the driving part and the supporting wheel and the clamping wheel of the elastic clamping part, so that the welding wire can be elastically clamped, the welding wire pressure can be automatically adjusted, the wire feeding can be stable, and the welding wire deformation or the failure of wire feeding caused by the pressure being too loose or too tight can be avoided, so as to ensure the welding quality. The welding equipment is suitable for the field of welding equipment technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0018] In the attached picture:

[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model from another angle;

[0021] Figure 3 It is the front view of the utility model;

[0022] Figure 4 for Figure 1 A partial enlarged view of the middle part;

[0023] Figure 5 It is a structural schematic diagram of the support shaft in the utility model.

[0024] Marked parts: 01-body, 11-cross support, 12-through hole, 13-welding gun bracket, 14-voltage adjustment knob, 15-current adjustment knob, 16-gas interface, 17-power interface, 02-wire reel, 03-wire feeding drive unit, 30-U-shaped plate, 31-wire feeding nozzle, 32-spring, 33-fixing plate, 34-adjusting screw, 35-guide rod, 36-elastic adjustment plate, 37-pressure wheel, 38-support wheel, 04-support frame, 41-hinge, 42-support plate, 43-support shaft, 431-conical rubber sleeve, 44-rocker, 45-arc anti-drop buckle, 46-butterfly nut, 47-roller. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] The utility model discloses a wire feeding system for a carbon dioxide shielded welding machine. Figure 1As shown, it includes a body 01, the front end of the body 01 is provided with a gas interface 16, a power interface 17 and a welding adjustment knob, the welding adjustment knob includes a voltage adjustment knob 14 and a current adjustment knob 15, and at the same time, the front end is also provided with a manual wire feeding switch, the tail end of the body 01 is provided with a support shaft 43 for releasing the wire from the wire reel 02, and the body 01 is provided with a wire feeding drive unit 03 inside, and the wire feeding drive unit 03 includes a driving part and an elastic pressing part, the driving part is arranged inside the body 01, and the elastic pressing part is connected to the body 01. The U-shaped plate 30 is connected to the driving part, and the support shaft 43 is rotatably installed at the tail end of the fuselage 01 through the support frame 04; the support frame 04 includes a support plate 42 and two rollers 47, the bottom of the support plate 42 is installed on one side of the tail of the fuselage 01 through a hinge 41, and the two rollers 47 are rotatably installed on the other side of the tail of the fuselage 01 through a rotating shaft, one end of the support shaft 43 is rotatably connected to the top of the support plate 42, and the other end of the support shaft 43 is placed on the two rollers 47 and limited by an anti-slip assembly. The wire feeding end and the wire outlet end of the two support wheels 38 and the two clamping wheels 37 are both provided with a wire feeding nozzle 31, and the wire feeding nozzle 31 is fixed on the plate body at the front and rear ends of the U-shaped plate 30.

[0027] As a specific implementation method, Figure 4 As shown, the elastic clamping part includes two support wheels 38, two clamping wheels 37 and an elastic component. The two support wheels 38 are rotatably mounted on the U-shaped plate 30 and are transmission-connected to the wire feeding drive unit 03. The two clamping wheels 37 are located above the two support wheels 38 and are movably mounted on the U-shaped plate 30 through the elastic component. The elastic component includes an adjusting screw 34, two guide rods 35, a fixed plate 33 and an elastic adjusting plate 36. The fixed plate 33 is fixedly installed on the top of the U-shaped plate 30, and the elastic adjusting plate 36 is movably installed below the fixed plate 33. The two guide rods 35 are slidably connected with the fixed plate 33, and are fixedly connected with the elastic adjusting plate 36 after passing through the fixed plate 33. Two U-shaped seats are provided at the bottom of the elastic adjusting plate 36, and two clamping wheels 37 are rotatably installed on the U-shaped seats. The guide rod 35 is located between the support plate 42 and the elastic adjusting plate 36, and a spring 32 is sleeved on the rod body. The adjusting screw 34 is located between the two guide rods 35. The adjusting screw 34 is slidably connected with the support plate 42, and is threadedly connected with the elastic adjusting plate 36 after passing through the support plate 42. Figure 5 As shown, a conical rubber sleeve 431 is mounted on the support shaft 43, and the welding wire reel 02 is mounted on the conical rubber sleeve 431. The conical rubber sleeve 431 plays an anti-slip role, preventing the welding wire reel 02 from being laterally displaced on the support shaft 43, and from being relatively rotated with the support shaft 43 during the wire feeding process. The inner diameter of the conical rubber sleeve 431 is matched with the outer diameter of the support shaft 43, and the outer diameter of the conical rubber sleeve 431 is matched with the inner diameter of the welding wire reel 02.

[0028] Because the fixed plate 33 is fixedly connected to the top of the U-shaped plate 30, the elastic adjustment plate 36 is in an active state, and the adjusting screw 34 is threadedly connected to the elastic adjustment plate 36, when the wire feeding system is used, it is first necessary to install the wire reel 02 on the support shaft 43, and then install the welding wire, and then pass the welding wire through the wire feeding nozzle 31 and the wire feeding drive unit 03 and enter the welding handle line until it extends out of the welding gun.

[0029] Specifically, the adjusting screw 34 is rotated clockwise, and the elastic adjusting plate 36 drives the two clamping wheels 37 to move upward, so that the distance between the two clamping wheels 37 and the two supporting wheels 38 is increased, leaving space for the welding wire to pass through, and the welding wire is inserted from the wire feeding nozzle 31 at the tail end, and then passes through the welding wire grooves on the two supporting wheels 38, and enters the welding handle line from the wire feeding nozzle 31 at the front end, and the adjusting screw 34 is rotated counterclockwise, and the clamping wheel 37 is lowered with the elastic adjusting plate 36 until the two lower welding wires enter the welding wire grooves of the two clamping wheels 37 and then the adjusting screw 34 is locked by the lock nut. Under the elastic force of the spring 32, the elastic adjusting plate 36 and the two clamping wheels 37 are always subjected to the downward elastic force, so that the welding wire is always elastically compressed, and there will be no excessive pressure to cause deformation of the welding wire, and there will be no pressure too small to feed the wire. And the distance between the fixed plate 33 and the elastic adjusting plate 36 can be adjusted according to the diameter of the welding wire, so as to adapt to welding wires of different diameters and adjust the size of the clamping force at the same time.

[0030] As a specific embodiment, the top of the guide rod 35 is configured with an anti-slip step, the top of the adjusting screw 34 is configured with a swivel cap, two support wheels 38 and two clamping wheels 37 are correspondingly provided, and welding wire grooves are provided on the two support wheels 38 and the two clamping wheels 37. By providing the anti-slip step, the guide rod 35 will not slip off from the fixing plate 33 under the elastic force of the spring 32, and by providing the swivel cap, the rotation of the adjusting screw 34 is facilitated, and the swivel cap can also be provided in a butterfly shape.

[0031] As a specific implementation method, Figure 2As shown, the hinge 41 adopts a hinge, and the anti-drop assembly includes an arc-shaped anti-drop buckle 45 adapted to the support shaft 43. One end of the arc-shaped anti-drop buckle 45 is rotatably connected to the fuselage 01 through a rotating shaft, and the other end is detachably connected to the fuselage 01 through a butterfly nut 46. The other side of the fuselage 01 is provided with a locking block adapted to the butterfly nut 46. By setting a release port, the support frame 04 forms a stable whole, preventing the rotating shaft and the support plate 42 from turning outward and affecting the wire feeding of the welding wire reel 02. The support shaft 43 in the traditional technology is often fixed at one end, that is, one end of the support shaft 43 is fixed to one side of the tail end of the fuselage 01, and the other end supports the cantilever beam structure, and the end is limited by a movable pin. The stability of the support shaft 43 of this structure is poor, and the welding wire reel 02 shakes greatly when rotating to feed the wire, which will cause unstable wire feeding. The support shaft 43 will sink and deform after being used for a long time, and the limiting performance of the movable pin is unstable. The welding wire reel 02 cannot be fed after it is detached from the other end. The support shaft 43 in the present wire feeding system is supported at both ends and is limited by the support plate 42 and the body 01. The overall stability is good, the support shaft 43 will not sink or deform, and the wire reel 02 can be prevented from falling out. The wire feeding is smooth and will not shake, and the life of the equipment is longer. When installing the wire reel 02, the arc-shaped anti-drop buckle 45 can be loosened, the support shaft 43 and the support plate 42 can be rotated outward and laid flat, with the support shaft 43 facing upward, and the support shaft 43 can be passed through the installation hole of the wire reel 02. Then, the support plate 42 and the support shaft 43 can be reversed back to their original positions, and finally the arc-shaped anti-drop buckle 45 can be returned and locked to complete the installation of the wire reel 02.

[0032] As a specific implementation method, Figure 3 , Figure 5 As shown, the other end of the support shaft 43 is configured with a groove, in which a rocker 44 is provided, and one end of the rocker 44 is rotatably connected to the support shaft 43 via a rotating shaft. With the rotating shaft as the axis, the rocker 44 is pulled out of the groove so that the rocker 44 is perpendicular to the end surface of the support shaft 43, and the wire reel 02 can be rotated by rotating the rocker 44 to reel the welding wire.

[0033] As a specific embodiment, a cross brace 11 is provided on the top of the fuselage 01, and a through hole 12 adapted to the welding gun is constructed near the top of the front end of the fuselage 01, and a welding gun bracket 13 is fixedly provided below the through hole 12. The cross brace 11 is provided to facilitate the movement of the welding system equipment, and the welding gun bracket 13 is provided to facilitate the storage of the welding gun. The head of the welding gun is inserted into the through hole 12, and the gun body of the welding gun is placed on the welding gun bracket 13, which can prevent the welding gun from being thrown around randomly, and prevent the welding gun from being misoperated or damaged when not paid attention to.

[0034] To sum up, the utility model solves the problem of the wire feeding system in the traditional technology, which clamps and feeds the wire through a fixed pressure, and its clamping force cannot be adjusted, which is easy to cause looseness or tension, causing the welding wire to deform or fail to feed the wire smoothly, affecting the welding quality. At the same time, it has the characteristics of stable wire feeding and easy movement, and is suitable for the field of welding equipment technology.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of protection of the claims of the utility model.

Claims

1. A wire feeding system for a carbon dioxide shielded welding machine, comprising a body, a gas interface, a power interface and a welding adjustment knob are arranged at the front end of the body, a support shaft for releasing the welding wire reel is arranged at the rear end of the body, and a wire feeding drive unit is arranged inside the body, characterized in that: The wire feeding drive unit comprises a driving part and an elastic pressing part, wherein the driving part is arranged inside the fuselage, the elastic pressing part is connected to the driving part through a U-shaped plate, and the support shaft is rotatably mounted on the rear end of the fuselage through a support frame; The support frame includes a support plate and two rollers. The bottom of the support plate is installed on one side of the tail of the fuselage through a hinge. The two rollers are rotatably installed on the other side of the tail of the fuselage through a rotating shaft. One end of the support shaft is rotatably connected to the top of the support plate, and the other end of the support shaft is placed on the two rollers and limited by an anti-slip assembly.

2. A carbon dioxide shielded welding machine wire feeding system according to claim 1, characterized in that: The elastic clamping part includes two supporting wheels, two clamping wheels and an elastic component. The two supporting wheels are rotatably mounted on the U-shaped plate and are transmission-connected to the wire feeding drive unit. The two clamping wheels are located above the two supporting wheels and are movably mounted on the U-shaped plate through the elastic component.

3. A carbon dioxide shielded welding machine wire feeding system according to claim 2, characterized in that: The elastic component includes an adjusting screw, two guide rods, a fixed plate and an elastic adjusting plate. The fixed plate is fixedly installed on the top of the U-shaped plate, and the elastic adjusting plate is movably installed under the fixed plate. The two guide rods are slidably connected to the fixed plate and fixedly connected to the elastic adjusting plate after passing through the fixed plate. Two U-shaped seats are provided at the bottom of the elastic adjusting plate, and two clamping wheels are rotatably installed on the U-shaped seats. The guide rod is located between the support plate and the elastic adjusting plate and is provided with a spring on the rod body. The adjusting screw is located between the two guide rods. The adjusting screw is slidably connected to the support plate and threadedly connected to the elastic adjusting plate after passing through the support plate.

4. A carbon dioxide shielded welding machine wire feeding system according to claim 2, characterized in that: The wire inlet and outlet ends of the two supporting wheels and the two pressing wheels are both provided with wire feeding nozzles, and the wire feeding nozzles are fixedly arranged on the plate body at the front and rear ends of the U-shaped plate.

5. A carbon dioxide shielded welding machine wire feeding system according to claim 3, characterized in that: The top of the guide rod is configured with an anti-slip step, the top of the adjusting screw is configured with a rotary cap, two supporting wheels and two clamping wheels are correspondingly arranged, and both the two supporting wheels and the two clamping wheels are configured with welding wire grooves.

6. A carbon dioxide shielded welding machine wire feeding system according to claim 1, characterized in that: The articulated part adopts a hinge, and the anti-drop assembly includes an arc-shaped anti-drop buckle adapted to the support shaft, one end of the arc-shaped anti-drop buckle is rotatably connected to the fuselage through a rotating shaft, and the other end is detachably connected to the fuselage through a butterfly nut, and a locking block adapted to the butterfly nut is provided on the other side of the fuselage.

7. A carbon dioxide shielded welding machine wire feeding system according to claim 1, characterized in that: The other end of the support shaft is configured with a groove, a rocker is arranged in the groove, and one end of the rocker is rotatably connected to the support shaft via a rotating shaft.

8. A carbon dioxide shielded welding machine wire feeding system according to claim 1, characterized in that: A horizontal brace is arranged on the top of the fuselage, a through hole adapted to a welding gun is constructed at the front end of the fuselage near the top, and a welding gun bracket is fixedly arranged below the through hole.

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