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 and a conveying pipe set, the conveying pipe set comprises a connecting pipe, a conveying pipe, a mounting plate, a screw and an elastic piece, the connecting pipe is connected to the conveying assembly through the mounting plate, the conveying pipe is located at the outer end of the connecting pipe, and the elastic piece is connected between the conveying pipe and the connecting pipe; the elastic part applies elastic force to the conveying pipe to enable the conveying pipe to always have the trend of moving to be close to the connecting pipe, the screws are connected to the mounting plate in a threaded mode, the tail ends of the screws abut against the conveying pipe, and the screws abut against the conveying pipe, so that the screws resist force which is applied by the elastic part and enables the conveying pipe to move to be close to the connecting pipe. The multiple screws are evenly arranged at intervals in the circumferential direction of the conveying pipe. According to the submerged-arc welding wire feeding mechanism, the adjusting flexibility of the position of the wire feeding nozzle can be improved.

Description

Technical Field

[0001] This utility model relates to the field of submerged arc welding technology, specifically to a submerged arc welding wire feeding mechanism. Background Technology

[0002] Submerged arc welding is a welding process in which an electric arc burns under a layer of flux. During submerged arc welding, the workpiece and the welding wire are respectively connected to the two poles of the welding power source. The welding wire is connected to the power source through sliding contact with the wire feed nozzle. The welding circuit includes the welding power source, connecting cable, wire feed nozzle, welding wire, electric arc, molten pool, and workpiece. The end of the welding wire melts continuously under the heat of the electric arc, forming a molten metal pool that isolates it from the air. As the welding machine moves forward automatically, the electric arc continuously melts the workpiece metal, welding wire, and flux in front of it. Therefore, the welding wire should be fed continuously to maintain the stability of the welding process. At the same time, the edge behind the molten pool begins to cool and solidify to form a weld. The liquid slag then also solidifies to form a hard slag shell.

[0003] The wire feeding mechanism in submerged arc welding is a wire feeding device in the submerged arc welding process. The existing submerged arc welding wire feeding mechanism requires the entire submerged arc welding wire feeding mechanism to move to adjust the angle and position of the wire feeding nozzle. However, the position of the entire submerged arc welding wire feeding mechanism is sometimes obstructed by the working space, resulting in poor flexibility in adjusting the position of the wire feeding nozzle.

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

[0005] Based on the aforementioned problems in the existing technology, the purpose of this utility model embodiment is to provide a submerged arc welding wire feeding mechanism that can improve the adjustment flexibility of the wire feeding nozzle position.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A submerged arc welding wire feeding mechanism is provided, including a conveying assembly and a conveying pipe assembly. The conveying pipe assembly includes a connecting pipe, a conveying pipe, a mounting plate, a screw, and an elastic element. The connecting pipe is connected to the conveying assembly via the mounting plate. The welding wire output by the conveying assembly passes through the connecting pipe. The conveying pipe is located at the outer end of the connecting pipe. The elastic element is connected between the conveying pipe and the connecting pipe. The elastic element applies a spring force to the conveying pipe, causing the conveying pipe to always tend to move closer to the connecting pipe. The screw is threaded onto the mounting plate, and the end of the screw abuts against the conveying pipe. The screw resists the force applied by the elastic element that causes the conveying pipe to move closer to the connecting pipe. Furthermore, there are multiple screws, which are evenly and spaced along the circumference of the conveying pipe. By moving the screws to different distances into the conveying pipe, the contact plane formed by the multiple screws and the conveying pipe changes, thereby forcing the conveying pipe to tilt relative to the connecting pipe, or causing the conveying pipe to extend or retract along its axial direction.

[0007] Furthermore, the connecting pipe has a flange protruding radially outward at one end near the conveying pipe. The conveying pipe is at least partially sleeved outside the connecting pipe. There is a gap between the outer peripheral wall of the conveying pipe and the inner peripheral wall of the connecting pipe. A retaining ring is sleeved on the outer side of the connecting pipe and is fixedly connected to the conveying pipe. An elastic element is sleeved outside the connecting pipe and is housed inside the conveying pipe. The two opposite ends of the elastic element abut against the side of the flange facing the connecting pipe and the side of the retaining ring facing the conveying pipe, respectively.

[0008] Furthermore, a flange is provided on the outer peripheral wall of the conveying pipe extending radially, the screw is perpendicular to the flange, and the screw is helically engaged with the flange.

[0009] Furthermore, the elastic element has a trumpet-shaped structure.

[0010] Furthermore, the conveying assembly includes a support, a drive wheel, and a free wheel. The drive wheel rotates and is fitted onto the support, while the free wheel swings and is connected to the support, with the free wheel close to the drive wheel.

[0011] Furthermore, the mounting plate is fixedly connected to the bracket.

[0012] Furthermore, the submerged arc welding wire feeding mechanism also includes a driver, which is a driving device that outputs circumferential motion power, and the output end of the driver is connected to the drive wheel.

[0013] Furthermore, a straightening component is provided on one side of the conveying component. The straightening component includes a mounting base and multiple straightening wheels that are rotatably fitted on the mounting base. The multiple straightening wheels are staggered and arranged on opposite sides of the welding wire.

[0014] The beneficial effects of this utility model are as follows: The submerged arc welding wire feeding mechanism provided by this utility model includes a conveying assembly and a conveying pipe assembly. The conveying pipe assembly includes a connecting pipe, a conveying pipe, a mounting plate, a screw, and an elastic element. The connecting pipe is connected to the conveying assembly through the mounting plate. The welding wire output by the conveying assembly passes through the connecting pipe. The conveying pipe is located at the outer end of the connecting pipe. The elastic element is connected between the conveying pipe and the connecting pipe. The elastic element applies elastic force to the conveying pipe, making the conveying pipe always tend to move closer to the connecting pipe. The screw is threaded onto the mounting plate, and the end of the screw abuts against the conveying pipe. The screw and the conveying pipe abut against each other, thereby resisting the screw's movement. The elastic element applies a force that moves the conveying pipe closer to the connecting pipe. Multiple screws are evenly spaced along the circumference of the conveying pipe. By moving the screws to different distances into the conveying pipe, the contact plane formed by the multiple screws and the conveying pipe changes, forcing the conveying pipe to tilt relative to the connecting pipe, or causing the conveying pipe to extend or retract along its axial direction. The end of the conveying pipe is connected to a wire feeding nozzle. Therefore, the submerged arc welding wire feeding mechanism provided in this embodiment can flexibly adjust the position of the wire feeding nozzle connected to the conveying pipe through the rotation of the screws, without needing to move the entire submerged arc welding wire feeding mechanism. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 A three-dimensional structural schematic diagram of the submerged arc welding wire feeding mechanism provided in an embodiment of this utility model.

[0017] Figure 2 for Figure 1 The left view of the submerged arc welding wire feeding mechanism shown.

[0018] Figure 3 For along Figure 2 A cross-sectional view along the AA direction.

[0019] Figure 4 This is a three-dimensional structural diagram of the conveying pipe assembly provided in an embodiment of the present utility model.

[0020] Figure 5 An exploded view of the conveying pipe assembly provided in an embodiment of this utility model.

[0021] Figure 6 for Figure 3 A magnified view of region E in the middle.

[0022] In the figure, the following reference numerals are used: 1. Conveying assembly; 11. Support; 12. Drive wheel; 13. Free wheel; 2. Straightening assembly; 21. Mounting base; 22. Straightening wheel; 23. Insertion channel; 24. Channel; 3. Conveying pipe assembly; 31. Connecting pipe; 311. Flange; 32. Conveying pipe; 321. Flanged edge; 33. Mounting plate; 34. Screw; 35. Retaining ring; 36. Elastic element; 4. Driver. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] It should be noted that when a component is referred to as "connected to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0027] Throughout this specification, reference to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, a particular feature, structure, or characteristic may be combined in any suitable manner.

[0028] Please refer to Figures 1 to 6 As shown, the present invention provides a submerged arc welding wire feeding mechanism, which includes a conveying assembly 1 and a conveying pipe assembly 3. The conveying pipe assembly 3 includes a connecting pipe 31, a conveying pipe 32, a mounting plate 33, a screw 34, and an elastic element 36. The connecting pipe 31 is connected to the conveying assembly 1 through the mounting plate 33. The welding wire output from the conveying assembly 1 passes through the connecting pipe 31. The conveying pipe 32 is located at the outer end of the connecting pipe 31. The elastic element 36 is connected to the connecting pipe 32 and the screw 34. Between the pipes 31, the elastic element 36 applies a spring force to the conveying pipe 32, causing the conveying pipe 32 to always tend to move closer to the connecting pipe 31. The screw 34 is threaded onto the mounting plate 33, and the end of the screw 34 abuts against the conveying pipe 32. The screw 34 resists the force applied by the elastic element 36 that causes the conveying pipe 32 to move closer to the connecting pipe 31. There are multiple screws 34, which are evenly spaced along the circumference of the conveying pipe 32, thereby allowing... By varying the distance the moving screws 34 extend towards the conveying pipe 32, the abutting plane formed by the contact between the multiple screws 34 and the conveying pipe 32 changes, thereby forcing the conveying pipe 32 to tilt relative to the connecting pipe 31. Specifically, when the abutting plane formed by the contact between the multiple screws 34 and the conveying pipe 32 is not perpendicular to the axis of the connecting pipe 31, the conveying pipe 32 will tilt relative to the connecting pipe 31; or the conveying pipe 32 will extend and retract along its axial direction. Specifically, when the multiple screws 34 move closer to the conveying pipe 32, they will push the conveying pipe 32 away from the connecting pipe 31 and extend it. When the multiple screws 34 move away from the conveying pipe 32, the conveying pipe 32 will retract closer to the connecting pipe 31 under the elastic force of the elastic element 36. The end of the conveying pipe 32 is connected to a wire feeding nozzle (not shown in the figure), so that the submerged arc welding wire feeding mechanism provided in this embodiment can flexibly adjust the position of the wire feeding nozzle connected to the conveying pipe 32 by rotating the screws 34, without moving the entire submerged arc welding wire feeding mechanism.

[0029] In addition, the submerged arc welding wire feeding mechanism provided in this embodiment of the utility model has a more precise positioning of the conveying pipe group 3 compared to the universal ball head structure. In the prior art, the universal ball head structure locks the universal ball head by rotating the screw during locking, but the rotation of the screw during locking can easily cause the ball head to deflect, thereby affecting the positional accuracy of the wire feeding nozzle.

[0030] like Figure 4 and Figure 6 As shown, in some embodiments, the connecting pipe 31 has a flange 311 protruding radially outward at one end near the conveying pipe 32. The conveying pipe 32 is at least partially sleeved outside the connecting pipe 31. A gap is spaced between the outer peripheral wall of the conveying pipe 32 and the opposing inner peripheral wall of the connecting pipe 31 to allow the conveying pipe 32 to tilt relative to the connecting pipe 31. A retaining ring 35 is sleeved on the outer side of the connecting pipe 31 and is fixedly connected to the conveying pipe 32. An elastic member 36 is sleeved on the outside of the connecting pipe 31, and the elastic member 36... Contained within the conveying pipe 32, the two opposite ends of the elastic member 36 abut against the flange 311 facing the connecting pipe 31 and the retaining ring 35 facing the conveying pipe 32, respectively. This allows the elastic member 36 to apply elastic force to the conveying pipe 32, ensuring that the conveying pipe 32 always tends to move closer to the connecting pipe 31. At the same time, because the conveying pipe 32 is at least partially sleeved outside the connecting pipe 31, the conveying pipe 32 will not tilt at a large angle relative to the connecting pipe 31, thus preventing the connection between the conveying pipe 32 and the connecting pipe 31 from failing.

[0031] like Figure 4 and Figure 6 As shown, in some embodiments, a flange 321 is provided on the outer peripheral wall of the conveying pipe 32 extending radially. The screw 34 is perpendicular to the flange 321 and is screwed onto the flange 321. The design of the flange 321 increases the distance between the multiple screws 34 and the axis of the conveying pipe 32, thereby lengthening the lever arm of the screws 34 applied to the conveying pipe 32 and effectively stabilizing the conveying pipe 32.

[0032] like Figure 4 and Figure 6 As shown, in some embodiments, the elastic element 36 has a trumpet-shaped structure, so that the two ends of the elastic element 36 can be connected to the inner connecting pipe 31 and the outer conveying pipe 32 respectively.

[0033] like Figure 1 As shown, in some embodiments, the conveying assembly 1 includes a support 11, a drive wheel 12 and a free wheel 13. The drive wheel 12 is rotatably coupled to the support 11, and the free wheel 13 is oscillatingly connected to the support 11. The free wheel 13 is close to the drive wheel 12, so that the welding wire can pass between the free wheel 13 and the drive wheel 12.

[0034] like Figure 6As shown, in some embodiments, the mounting plate 33 is fixedly connected to the bracket 11.

[0035] like Figure 1 As shown, in some embodiments, the submerged arc welding wire feeding mechanism further includes a driver 4, which is a drive device that outputs circumferential motion power. The output end of the driver 4 is connected to the drive wheel 12 to drive the drive wheel 12 to rotate. Specifically, the driver 4 is connected to the bracket 11 of the conveying assembly 1.

[0036] like Figure 1 As shown, in some embodiments, a straightening component 2 is provided on one side of the conveying component 1. The straightening component 2 includes a mounting base 21 and a plurality of straightening wheels 22 rotatably fitted on the mounting base 21. The plurality of straightening wheels 22 are staggered on opposite sides of the welding wire so that the welding wire straightening wheels 22 apply pressure to both sides of the welding wire, so that the originally bent welding wire undergoes reverse deformation after being pressed, thereby becoming straight.

[0037] like Figure 1 As shown, the mounting base 21 has an insertion channel 23 on the side of the straightening wheel 22 away from the conveying assembly 1. The insertion channel 23 allows the welding wire to pass through and extend towards the straightening wheel 22. The mounting base 21 has a channel 24 on the side of the straightening wheel 22 close to the conveying assembly 1. The welding wire passing through the straightening wheel 22 enters the channel 24 and extends between the drive wheel 12 and the free wheel 13.

[0038] like Figure 1 As shown, in some embodiments, the drive wheel 12 is provided with a friction structure on its circumference to increase the contact friction resistance on the circumference of the drive wheel 12 and avoid slippage when it rolls into contact with the welding wire. The friction structure may be a groove, a protrusion, or an outer layer made of a material with high roughness.

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

Claims

1. A submerged arc welding wire feed mechanism characterized by: The application relates to a welding wire conveying assembly and a conveying pipe set, wherein the conveying pipe set comprises a connecting pipe, a conveying pipe, a mounting plate, a screw rod and an elastic member; the connecting pipe is connected to the conveying assembly through the mounting plate; the welding wire output by the conveying assembly passes through the connecting pipe; the conveying pipe is located at the outer end of the connecting pipe; the elastic member is connected between the conveying pipe and the connecting pipe; the elastic member applies elastic force to the conveying pipe so that the conveying pipe always has a tendency to move close to the connecting pipe; the screw rod is screwed on the mounting plate; the end of the screw rod abuts against the conveying pipe; the screw rod abuts against the conveying pipe so as to resist the force applied by the elastic member to make the conveying pipe move close to the connecting pipe; and the screw rod has a plurality of screw rods which are uniformly and spacedly arranged along the circumference of the conveying pipe, so that the contact plane formed by the plurality of screw rods and the conveying pipe is changed by moving the screw rods to different distances of the conveying pipe, thereby forcing the conveying pipe to tilt relative to the connecting pipe or making the conveying pipe stretch and contract along the axial direction of the conveying pipe.

2. The submerged arc welding wire feed mechanism of claim 1, wherein: The end of the connecting pipe close to the conveying pipe is provided with a flange protruding outward in the radial direction; the conveying pipe is at least partially sleeved on the outside of the connecting pipe; the outer peripheral wall of the conveying pipe and the opposite inner peripheral wall of the connecting pipe are spaced apart by a gap; the outside of the connecting pipe is sleeved with a check ring; the check ring is fixedly connected to the conveying pipe; the elastic member is sleeved on the outside of the connecting pipe and accommodated in the conveying pipe; and the opposite two ends of the elastic member abut against the side of the flange facing the connecting pipe and the side of the check ring facing the conveying pipe respectively.

3. The submerged arc welding wire feed mechanism of claim 1, wherein: The outer peripheral wall of the conveying pipe is provided with a flange protruding in the radial direction; the screw rod is perpendicular to the flange; and the screw rod is screwed on the flange.

4. The submerged arc welding wire feed mechanism of claim 2, wherein: The elastic member has a horn structure.

5. The submerged arc welding wire feed mechanism of claim 1, wherein: The conveying assembly comprises a support, a driving wheel and an idler wheel; the driving wheel is rotatably connected to the support; the idler wheel is swingably connected to the support; and the idler wheel is close to the driving wheel.

6. The submerged arc welding wire feed mechanism of claim 5, wherein: The mounting plate is fixedly connected to the support.

7. The submerged arc welding wire feed mechanism of claim 5, wherein: The submerged arc welding wire conveying mechanism further comprises a driver which is a driving device outputting circumferential motion power; and the output end of the driver is connected to the driving wheel.

8. The submerged arc welding wire feed mechanism of claim 1, wherein: One side of the conveying assembly is provided with a straightening assembly which comprises a mounting seat and a plurality of straightening wheels rotatably connected to the mounting seat; and the plurality of straightening wheels are arranged on the opposite two sides of the welding wire in a staggered manner.

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