Submerged-arc welding wire feeding mechanism

Abstract

The utility model discloses a submerged-arc welding wire feeding mechanism, and belongs to the technical field of submerged-arc welding. The device mainly comprises a conveying assembly, the conveying assembly comprises a support, a driving wheel, a first free wheel, a second free wheel and an elastic piece, the driving wheel is rotationally matched with the support, the first free wheel is rotationally matched with a first swing arm, the first swing arm is connected to the support in a swinging mode, the second free wheel is rotationally matched with a second swing arm, and the second swing arm is connected to the support in a swinging mode. The elastic piece is connected between the first swing arm and the second swing arm, the elastic piece exerts elastic force to drive the first swing arm and the second swing arm to swing to be close to the driving wheel and drive the first free wheel and the second free wheel to be attached to the two opposite sides of the driving wheel respectively, and a welding wire penetrates through the position between the first free wheel and the driving wheel or penetrates through the position between the second free wheel and the driving wheel. According to the submerged-arc welding wire feeding mechanism, it can be guaranteed that the driving wheel is stressed in a balanced mode, and the driving wheel can stably operate for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged arc welding, in particular to a submerged arc welding wire feeding mechanism. Background Art

[0002] Submerged arc welding is a welding process in which an electric arc burns under a layer of flux. During the submerged arc welding process, the workpiece to be welded and the welding wire are respectively connected to the two poles of the welding power supply. The welding wire is connected to the power supply through sliding contact with the conductive nozzle. The welding circuit includes the welding power supply, connecting cable, conductive nozzle, welding wire, arc, molten pool, workpiece and other links. The end of the welding wire is continuously melted under the action of the arc heat to form a molten metal pool, which is isolated from the air. As the welding machine automatically moves forward, the arc continuously melts the weld metal, welding wire and flux in front. Therefore, the welding wire should be fed in continuously to keep the welding process stable. At the same time, the edge behind the molten pool begins to cool and solidify to form a weld, and the liquid slag then condenses to form a hard slag shell.

[0003] The submerged arc welding wire feeding mechanism is a wire feeding device in the submerged arc welding process. Some existing submerged arc welding wire feeding mechanisms have some problems during use: the tensioning wheel elastically sticks to one side of the driving wheel to press the welding wire against the driving wheel, which causes the driving wheel to be pushed in a single direction by the tensioning wheel for a long time, which easily causes stress concentration on the driving wheel. The stress concentration position is severely worn, causing the driving wheel to shake. The unstable rotation of the driving wheel will affect the traction stability of the welding wire.

[0004] Therefore, it is necessary to provide a new submerged arc welding wire feeding mechanism. Utility Model Content

[0005] Based on the above problems existing in the prior art, the purpose of the embodiments of the utility model is to provide a submerged arc welding wire feeding mechanism, which can ensure that the driving wheel is subjected to balanced force, so that the driving wheel can maintain stable operation for a long time.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a submerged arc welding wire feeding mechanism, including a conveying assembly, the conveying assembly includes a bracket, a driving wheel, a free wheel one, a free wheel two and an elastic member, the driving wheel is rotatably matched with the bracket, the free wheel one is rotatably matched with a swing arm one, the swing arm one is swingably connected to the bracket, the free wheel two is rotatably matched with a swing arm two, the swing arm two is swingably connected to the bracket, the elastic member is connected between the swing arm one and the swing arm two, the elastic member applies elastic force to drive the swing arm one and the swing arm two to swing close to the driving wheel, and drives the free wheel one and the free wheel two to respectively stick to the opposite sides of the driving wheel, and the welding wire passes between the free wheel one and the driving wheel, or the welding wire passes between the free wheel two and the driving wheel.

[0007] Furthermore, a slider is slidably provided on the swing arm 1, a pull rod is inserted at the axis of the elastic member, one end of the pull rod is connected to the slider, and the other end of the pull rod is against the side of the swing arm 2 facing away from the swing arm 1, one end of the elastic member is against the side of the slider facing the swing arm 2, and the other end of the elastic member is against the side of the swing arm 1 facing away from the swing arm 2, so that the elastic member exerts an elastic force on the swing arm 1 to force the swing arm 1 to swing and drive the free wheel 1 to approach the driving wheel, and at the same time, the elastic member exerts an elastic force on the swing arm 2 to force the swing arm 2 to swing and drive the free wheel 2 to approach the driving wheel, and finally the free wheels 1 and 2 are against the driving wheel at the same time.

[0008] Furthermore, the pull rod is threadably matched with the slider.

[0009] Furthermore, the swing arm 1 is rotationally matched with the bracket through the rotating part 1, and the swing arm 2 is rotationally matched with the bracket through the rotating part 2.

[0010] Furthermore, a second slide groove is provided on the first swing arm, and the sliding block is slidably fitted in the second slide groove.

[0011] Furthermore, the submerged arc welding wire feeding mechanism also includes a straightening assembly arranged on one side of the conveying assembly, and the straightening assembly includes a mounting seat and a plurality of straightening wheels rotatably engaged with the mounting seat, and the plurality of straightening wheels are staggered and arranged on opposite sides of the welding wire.

[0012] Furthermore, an insertion channel is provided on the mounting seat at the side of the straightening wheel away from the conveying component, and the insertion channel is for the welding wire to pass through and extend toward the straightening wheel. A channel one is provided on the mounting seat at the side of the straightening wheel close to the conveying component, and the welding wire passing through the straightening wheel passes through the channel one and extends between the driving wheel and the free wheel one or between the driving wheel and the free wheel two.

[0013] Furthermore, the submerged arc welding wire feeding mechanism also includes a driver, which is a driving device that outputs circular motion power, and the output end of the driver is connected to the driving wheel.

[0014] Furthermore, a friction structure is provided on the peripheral side of the driving wheel.

[0015] Furthermore, a conveying pipe is provided on the side of the conveying component away from the straightening component.

[0016] The beneficial effects of the utility model are as follows: the submerged arc welding wire feeding mechanism provided by the utility model comprises a conveying assembly, which comprises a bracket, a driving wheel, a free wheel 1, a free wheel 2 and an elastic member, the driving wheel is rotatably matched with the bracket, the free wheel 1 is rotatably matched with a swing arm 1, the swing arm 1 is swingably connected to the bracket, the free wheel 2 is rotatably matched with a swing arm 2, the swing arm 2 is swingably connected to the bracket, the elastic member is connected between the swing arm 1 and the swing arm 2, the elastic member applies elastic force to drive the swing arm 1 and the swing arm 2 to swing close to the driving wheel, and drives the free wheel 1 and the free wheel 2 to respectively stick to the opposite sides of the driving wheel, and the welding wire passes through between the free wheel 1 and the driving wheel The welding wire passes through between the free wheel one and the driving wheel, or the welding wire passes through between the free wheel two and the driving wheel, so that in the submerged arc welding wire feeding mechanism provided by the embodiment of the utility model, the free wheel one and the free wheel two are respectively against the opposite sides of the driving wheel. On the one hand, the welding wire is pushed against the driving wheel by the free wheel one or the free wheel two. On the other hand, since the directions of the pushing forces applied by the free wheel one and the free wheel two to the driving wheel are opposite, and both are forces applied by elastic parts, the pushing forces applied by the free wheel one and the free wheel two are equal in magnitude. Therefore, the rotation axis of the driving wheel will not be affected by the pushing forces of the free wheel one and the free wheel two, so that the driving wheel is subjected to balanced force and can maintain stable operation for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a submerged arc welding wire feeding mechanism provided in an embodiment of the utility model.

[0019] Figure 2 for Figure 1 Left view of the submerged arc welding wire feeding mechanism shown.

[0020] Figure 3 For along Figure 2 Cross-sectional view along the EE direction.

[0021] Figure 4 An exploded view of the conveying assembly provided in an embodiment of the utility model.

[0022] Figure 5 An exploded view of the straightening assembly provided in an embodiment of the utility model.

[0023] Among them, the figure marks in the figure are: 1. conveying component; 11. bracket; 12. driving wheel; 13. free wheel one; 131. swing arm one; 132. rotating part one; 133. slide groove two; 134. slider; 14. free wheel two; 141. swing arm two; 142. rotating part two; 15. elastic member; 16. pull rod; 2. straightening component; 21. mounting seat; 211. slide groove one; 22. straightening wheel; 23. insertion channel; 24. channel one; 25. slide seat; 26. screw; 27. distance adjustment knob; 3. conveying pipe; 4. drive. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] Reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, not all references are to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0029] Please refer to Figures 1 to 5 As shown, a submerged arc welding wire feeding mechanism provided by the utility model is now described, the submerged arc welding wire feeding mechanism includes a conveying assembly 1, the conveying assembly 1 includes a bracket 11, a driving wheel 12, a free wheel 13, a free wheel 2 14 and an elastic member 15, the driving wheel 12 is rotatably matched with the bracket 11, the free wheel 13 is rotatably matched with a swing arm 131, the swing arm 131 is swingably connected to the bracket 11, the free wheel 2 14 is rotatably matched with a swing arm 2 141, the swing arm 2 141 is swingably connected to the bracket 11, the elastic member 15 is connected between the swing arm 131 and the swing arm 2 141, the elastic member 15 applies elastic force to drive the swing arm 131 and the swing arm 2 141 to swing close to the driving wheel 12, and drives the free wheel 13 and the free wheel 2 14 to respectively stick to the opposite sides of the driving wheel 12, and the welding wire The welding wire passes between the free wheel 13 and the driving wheel 12, or the welding wire passes between the free wheel 2 14 and the driving wheel 12, so that in the submerged arc welding wire feeding mechanism provided by the embodiment of the utility model, the free wheel 13 and the free wheel 2 14 are respectively against the opposite sides of the driving wheel 12. On the one hand, the welding wire is pushed against the driving wheel 12 by the free wheel 13 or the free wheel 2 14. In addition, since the directions of the pushing forces applied by the free wheel 13 and the free wheel 2 14 to the driving wheel 12 are opposite, and both are forces applied by the elastic member 15, the pushing forces applied by the free wheel 13 and the free wheel 2 14 are equal in magnitude. Therefore, the rotation axis of the driving wheel 12 will not be affected by the pushing forces of the free wheel 13 and the free wheel 2 14, so that the driving wheel 12 is subjected to balanced force and can maintain stable operation for a long time.

[0030] like Figure 3 and Figure 4As shown, in some embodiments, a slider 134 is slidably provided on the swing arm 131, a pull rod 16 is inserted at the axis of the elastic member 15, one end of the pull rod 16 is connected to the slider 134, and the other end of the pull rod 16 abuts against a side of the swing arm 2 141 facing away from the swing arm 131, one end of the elastic member 15 abuts against a side of the slider 134 facing the swing arm 2 141, and the other end of the elastic member 15 abuts against a side of the swing arm 131 facing away from the swing arm 2 141, so that the elastic member 15 applies an elastic force to the swing arm 131 to force the swing arm 131 to swing and drive the free wheel 13 to approach the driving wheel 12, and at the same time, the elastic member 15 applies an elastic force to the swing arm 2 141 to force the swing arm 2 141 to swing and drive the free wheel 2 14 to approach the driving wheel 12, and finally the free wheels 13 and 14 are abutted against the driving wheel 12 at the same time. Specifically, the pull rod 16 is threadedly matched with the slider 134, so that when the pull rod 16 is rotated in the first direction or the second direction relative to the slider 134, the pull rod 16 can be moved closer to or away from the slider 134, forcing the slider 134 to squeeze the elastic member 15 when it moves closer to the pull rod 16, so that the elastic force of the elastic member 15 increases; when the slider 134 moves away from the pull rod 16, the elastic member 15 stretches back, so that the elastic force of the elastic member 15 decreases. By adjusting the elastic force of the elastic member 15, the free wheel 11 can be adjusted. 3 or free wheel two 14 applies appropriate clamping force to welding wires of different diameters. Generally speaking, appropriate clamping force means that when the welding wire is thicker, the elastic force of the elastic member 15 is adjusted to be reduced, so that when the elastic member 15 is compressed to a larger stroke, the elastic force applied to the free wheel one 13 and the free wheel two 14 is within an appropriate value range; when the welding wire is thinner, the elastic force of the elastic member 15 is adjusted to be increased, so that when the elastic member 15 is compressed to a smaller stroke, the elastic force applied to the free wheel one 13 and the free wheel two 14 is within an appropriate value range.

[0031] like Figure 4 As shown, in some embodiments, the swing arm 131 is rotationally matched with the bracket 11 through the rotating part 132, and the swing arm 2 141 is rotationally matched with the bracket 11 through the rotating part 142, so as to realize the swinging of the swing arm 131 and the swing arm 2 141 on the bracket 11.

[0032] like Figure 4 As shown, in some embodiments, a second slide groove 133 is provided on the swing arm 131 , and the slider 134 is slidably fitted in the second slide groove 133 , so that the slider 134 can slide on the swing arm 131 through the second slide groove 133 .

[0033] In some of the embodiments, the submerged arc welding wire feeding mechanism also includes a driver 4, which is a driving device that outputs circular motion power. The output end of the driver 4 is connected to the driving wheel 12 to drive the driving wheel 12 to rotate. Specifically, the driver 4 is connected to the bracket 11.

[0034] like Figure 1 and Figure 3 As shown, in some embodiments, the submerged arc welding wire feeding mechanism also includes a straightening component 2 arranged on one side of the conveying component 1, the straightening component 2 includes a mounting seat 21 and a plurality of straightening wheels 22 rotatably engaged with the mounting seat 21, the plurality of straightening wheels 22 are staggered and arranged on opposite sides of the welding wire, so that the welding wire straightening wheels 22 apply pressure on both sides of the welding wire, so that the originally bent welding wire is reversely deformed after being pressed and becomes straight.

[0035] like Figure 5 As shown, in some embodiments, specifically, one of the straightening wheels 22 can slide relative to the mounting seat 21, so that the clamping gap of the straightening wheel 22 on the welding wire can be adjusted by sliding the straightening wheel 22 to adapt to welding wires of different diameters. More specifically, one of the straightening wheels 22 is slidably matched in the slide groove 1 211 on the mounting seat 21 through the slide 25, so that the slide 25 can slide linearly in the slide groove 1 211, and the slide 25 is connected with a screw rod 26, and one end of the screw rod 26 passes through the mounting seat 21 and is threadedly matched with a pitch adjustment knob 27, and then the screw rod 26 and the pitch adjustment knob 27 are moved closer or farther by rotating the pitch adjustment knob 27, and the pitch adjustment knob 27 is pressed against the mounting seat 21, thereby forcing the screw rod 26 to drive the slide 25 and the straightening wheel 22 on the slide 25 to move linearly relative to the mounting seat 21.

[0036] like Figure 1 , Figure 3 and Figure 5 As shown, a penetration channel 23 is provided on the mounting seat 21 at the side of the straightening wheel 22 away from the conveying assembly 1, and the penetration channel 23 is for the welding wire to pass through and extend to the straightening wheel 22. A channel 1 24 is provided on the mounting seat 21 at the side of the straightening wheel 22 close to the conveying assembly 1. The welding wire passing through the straightening wheel 22 passes through the channel 1 24 and extends to between the driving wheel 12 and the free wheel 1 13 or between the driving wheel 12 and the free wheel 2 14.

[0037] like Figure 3 As shown, in some of the embodiments, a conveying pipe 3 is provided on the side of the conveying component 1 away from the straightening component 2, and the conveying pipe 3 is used to guide the sent welding wire. The interior of the conveying pipe 3 is hollow to form an outlet channel 31. The welding wire passing through the driving wheel 12 and the free wheel 1 13 or the driving wheel 12 and the free wheel 2 14 passes through the outlet channel 31, thereby supplying welding wire for welding work.

[0038] like Figure 4 As shown, in some of the embodiments, a friction structure is provided on the peripheral side of the driving wheel 12 to increase the contact friction resistance of the peripheral side of the driving wheel 12 to avoid slipping when rolling in contact with the welding wire. The friction structure can be a wire groove, a protrusion, or an outer layer coated with a material with high roughness.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A submerged arc welding wire feeding mechanism, characterized in that: The conveying assembly includes a bracket, a driving wheel, a free wheel 1, a free wheel 2 and an elastic member, the driving wheel is rotatably matched with the bracket, the free wheel 1 is rotatably matched with a swing arm 1, the swing arm 1 is swingably connected to the bracket, the free wheel 2 is rotatably matched with a swing arm 2, the swing arm 2 is swingably connected to the bracket, the elastic member is connected between the swing arm 1 and the swing arm 2, the elastic member applies elastic force to drive the swing arm 1 and the swing arm 2 to swing close to the driving wheel, and drives the free wheel 1 and the free wheel 2 to respectively stick to the opposite sides of the driving wheel, the welding wire passes between the free wheel 1 and the driving wheel, or the welding wire passes between the free wheel 2 and the driving wheel.

2. The submerged arc welding wire feeding mechanism according to claim 1, characterized in that: A slider is slidably provided on the swing arm 1, a pull rod is inserted at the axis of the elastic member, one end of the pull rod is connected to the slider, and the other end of the pull rod is against the side of the swing arm 2 facing away from the swing arm 1, one end of the elastic member is against the side of the slider facing the swing arm 2, and the other end of the elastic member is against the side of the swing arm 1 facing away from the swing arm 2, so that the elastic member exerts an elastic force on the swing arm 1 to force the swing arm 1 to swing and drive the free wheel 1 to approach the driving wheel, and at the same time, the elastic member exerts an elastic force on the swing arm 2 to force the swing arm 2 to swing and drive the free wheel 2 to approach the driving wheel, and finally the free wheels 1 and 2 are against the driving wheel at the same time.

3. The submerged arc welding wire feeding mechanism according to claim 2, characterized in that: The pull rod is threadably matched with the slider.

4. The submerged arc welding wire feeding mechanism according to claim 1, characterized in that: The swing arm 1 is rotationally matched with the bracket through the rotating part 1, and the swing arm 2 is rotationally matched with the bracket through the rotating part 2.

5. The submerged arc welding wire feeding mechanism according to claim 2, characterized in that: The first swing arm is provided with a second slide groove, and the sliding block is slidably matched with the second slide groove.

6. The submerged arc welding wire feeding mechanism according to claim 1, characterized in that: The submerged arc welding wire feeding mechanism also includes a straightening component arranged on one side of the conveying component, and the straightening component includes a mounting seat and a plurality of straightening wheels rotatably engaged with the mounting seat, and the plurality of straightening wheels are staggered and arranged on opposite sides of the welding wire.

7. The submerged arc welding wire feeding mechanism according to claim 6, characterized in that: The mounting seat is provided with an insertion channel on the side of the straightening wheel away from the conveying component, and the insertion channel is for the welding wire to pass through and extend to the straightening wheel. The mounting seat is provided with a channel one on the side of the straightening wheel close to the conveying component, and the welding wire passing through the straightening wheel passes through the channel one and extends to between the driving wheel and the free wheel one or the driving wheel and the free wheel two.

8. The submerged arc welding wire feeding mechanism according to claim 1, characterized in that: The submerged arc welding wire feeding mechanism also includes a driver, which is a driving device that outputs circular motion power, and the output end of the driver is connected to the driving wheel.

9. The submerged arc welding wire feeding mechanism according to claim 1, characterized in that: A friction structure is arranged on the peripheral side of the driving wheel.

10. The submerged arc welding wire feeding mechanism according to claim 1, characterized in that: A conveying pipe is provided on one side of the conveying component away from the straightening component.

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