Mobile submerged arc welding machine wire feeding mechanism and mobile submerged arc welding machine

Abstract

A kind of mobile submerged arc welding machine with wire feeding mechanism, including base plate, wire feeding wheel, drive wheel, adjusting wheel, the base plate is equipped with two wire feeding wheels, the wire feeding wheel is along the length direction of base plate arrangement, the base plate is equipped with two drive wheels, wire feeding wheel and drive wheel one to one correspondence, the drive wheel can be moved along the width direction of base plate, to close or away from wire feeding wheel, adjusting wheel is equipped on the base plate between two drive wheels, the adjusting wheel can be moved along the width direction of base plate, in the case where the pressure between wire feeding wheel and welding wire is smaller, using adjusting wheel increases the wrap angle between wire feeding wheel and welding wire, increases the driving force of wire feeding wheel to welding wire, improves wire feeding stability, also provides a kind of mobile submerged arc welding machine.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a wire feeding mechanism for a mobile submerged arc welding machine and a mobile submerged arc welding machine. Background Technology

[0002] Submerged arc welding is a welding method in which a continuously fed welding wire generates an electric arc under a layer of flux. Taking a widely used automatic submerged arc welding carriage as an example, it includes a welding carriage, a wire spool, a wire feeding mechanism, a welding nozzle, and a flux hopper. The flux flows out from the flux hopper and accumulates on the workpiece to be welded. The welding wire on the wire spool is fed into the welding nozzle by the wire feeding mechanism and inserted into the flux. The welding nozzle ignites an arc, and the electric arc burns under the flux layer, melting the workpiece, the welding wire, and the flux to form a molten pool. The molten flux covers the surface of the molten pool. As the welding carriage moves forward, the flux accumulates along the workpiece to be welded, and the welding wire moves accordingly, continuously forming a molten pool, which then solidifies into a weld. Unmelted flux can be recycled and reused.

[0003] Stable wire feeding has a significant impact on weld quality. Chinese invention patent application number 202210026925.8 discloses a laser wire feeder welding dual-wire-feeding-wheel pressure synchronous adjustment device, comprising a mounting frame, drive wheels, wire-feeding wheels, pressure connecting rods, adjusting rods, springs, and threaded knobs. The mounting frame houses two drive wheels, each with a wire-feeding wheel on its underside. Each wire-feeding wheel has a pressure connecting rod, and the two pressure connecting rods are connected by an adjusting rod. One end of the adjusting rod extends out of the mounting frame and has a threaded knob. A spring is located on the outer edge of one end of the adjusting rod, within the mounting frame. One end of the spring abuts against one of the pressure connecting rods. This symmetrical design ensures that the pressure of the two wire-feeding wheels remains consistent and synchronized, improving wire feeding stability.

[0004] The welding wire is tangential to the two drive wheels or wire feed wheels. The welding wire straightener corrects the movement trajectory of the welding wire to maintain its straightness. There is point contact between the welding wire and the drive wheel. If the pressure between the drive wheel and the welding wire is small, the driving force of the drive wheel on the welding wire is insufficient, resulting in slippage. If the pressure between the drive wheel and the welding wire is large, it will damage the welding wire and affect the welding quality. Summary of the Invention

[0005] In view of this, and to address the above-mentioned shortcomings, it is necessary to propose a wire feeding mechanism for a mobile submerged arc welding machine.

[0006] It is also necessary to propose a mobile submerged arc welding machine.

[0007] A wire feeding mechanism for a mobile submerged arc welding machine includes a base plate, wire feeding wheels, drive wheels, and adjusting wheels. Two wire feeding wheels are provided on the base plate and are arranged along the length of the base plate. Two drive wheels are provided on the base plate, and the wire feeding wheels correspond one-to-one with the drive wheels. The drive wheels can move along the width of the base plate to approach or move away from the wire feeding wheels. The adjusting wheels are located on the base plate between the two drive wheels and can move along the width of the base plate.

[0008] Preferably, the wire feeding mechanism for the mobile submerged arc welding machine includes a first telescopic rod, the fixed end of which is connected to the base plate, and the telescopic end of which is equipped with an adjusting wheel.

[0009] Preferably, the wire feeding mechanism for the mobile submerged arc welding machine includes a crank, which corresponds one-to-one with a drive wheel. The two ends of the crank are a first end and a second end, respectively, and the middle part of the crank is a third end. The drive wheel is installed at the first end of the crank, and the third end of the crank is rotatably connected to the substrate.

[0010] Preferably, the wire feeding mechanism for the mobile submerged arc welding machine includes a second telescopic rod, the two ends of which are respectively connected to the second end of a crank.

[0011] A mobile submerged arc welding machine includes a welding nozzle and a wire feeding mechanism for the mobile submerged arc welding machine, wherein the welding nozzle is disposed on a substrate.

[0012] Preferably, the mobile submerged arc welding machine includes a welding vehicle, which includes a vehicle body, a column, and a crossbeam. The column is mounted on the vehicle body, the crossbeam is mounted on the column, and the base plate is connected to the crossbeam.

[0013] Preferably, the mobile submerged arc welding machine includes a flux supply mechanism, which includes a flux hopper, a guide pipe, and a connecting pipe. The flux hopper is connected to a crossbeam and includes a conical bottom wall. The top of the conical bottom wall is provided with a flux outlet, which is offset from the geometric center of the conical bottom wall. One end of the guide pipe is connected to the flux outlet, and the other end of the guide pipe is connected to the upper end of the connecting pipe. The lower end of the connecting pipe communicates with the inner cavity of the welding nozzle.

[0014] Preferably, the inner layer of the guide tube is a flexible tube, and the outer layer of the guide tube is a spring tube.

[0015] Preferably, the other end of the guide tube is embedded from the upper end of the connecting tube.

[0016] Preferably, the outer diameter of the guide tube is smaller than the inner diameter of the connecting tube.

[0017] Beneficial effects: When the pressure between the wire feed wheel and the welding wire is low, the adjustment wheel is used to increase the wrap angle between the wire feed wheel and the welding wire, thereby increasing the driving force of the wire feed wheel on the welding wire and improving the wire feeding stability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the wire feeding mechanism for the mobile submerged arc welding machine.

[0019] Figure 2 This is the front view of the mobile submerged arc welding machine.

[0020] Figure 3 This is a top view of the mobile submerged arc welding machine.

[0021] Figure 4 This is a left view of the mobile submerged arc welding machine.

[0022] Figure 5 This is a right view of the mobile submerged arc welding machine.

[0023] Figure 6 for Figure 2 A partial magnified view of the friction resistance component described herein.

[0024] Figure 7 for Figure 3 A partial magnified view of the friction resistance component described herein.

[0025] Figure 8 for Figure 3 A partial enlarged view of the angle adjustment component described herein.

[0026] Figure 9 This is the front view of the position adjustment mechanism.

[0027] Figure 10 This is a left view of the position adjustment mechanism.

[0028] In the diagram: flux supply mechanism 10, flux hopper 11, angle adjustment component 12, connecting rod 121, connecting plate 122, friction resistance component 123, first screw 1231, first nut 1232, connecting belt 124, second screw 125, second nut 126, guide pipe 13, connecting pipe 14, welding cart 20, crossbeam 21, cart body 22, column 23, wheel 24, welding nozzle 30, position adjustment mechanism 40, base 41. Upper horizontal plate 411, vertical plate 412, lower horizontal plate 413, slide bar 42, third screw 43, slider 44, handwheel 45, guide rail 50, wire feeding mechanism 60, base plate 61, wire feeding wheel 62, drive wheel 63, adjusting wheel 64, first telescopic rod 65, inner tube 651, outer tube 652, top screw 653, crank 66, second telescopic rod 67, connecting rod 671, top ring 672, helical spring 673, knob 674, welding wire spool 70. Detailed Implementation

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] See Figure 1 This utility model provides a wire feeding mechanism 60 for a mobile submerged arc welding machine, including a base plate 61, wire feeding wheels 62, drive wheels 63, and adjusting wheels 64. Two wire feeding wheels 62 are provided on the base plate 61 and are arranged along the length of the base plate 61. Two drive wheels 63 are provided on the base plate 61 and correspond one-to-one with the wire feeding wheels 62 and the drive wheels 63. The drive wheels 63 can move along the width of the base plate 61 to approach or move away from the wire feeding wheels 62. The adjusting wheel 64 is provided on the base plate 61 between the two drive wheels 63 and can move along the width of the base plate 61.

[0031] The wire feeding wheel 62, the adjusting wheel 64, and the driving wheel 63 are rotatably connected to the base plate 61. The rolling surfaces of the adjusting wheel 64, the wire feeding wheel 62, and the driving wheel 63 are all provided with rolling grooves. The two wire feeding wheels 62 can be driven by a motor respectively, or one wire feeding wheel 62 can be driven by a motor, and the other wire feeding wheel 62 can be connected to it through a belt or gear to achieve synchronous rotation.

[0032] The welding wire passes between the wire feeding wheel 62 and the drive wheel 63. The drive wheel 63 approaches the wire feeding wheel 62 to clamp it, and conversely, it releases the welding wire. The adjusting wheel 64 approaches and contacts the welding wire, causing the straight welding wire to deform slightly and increasing the wrap angle between the welding wire and the wire feeding wheel 62.

[0033] Beneficial effects: When the pressure between the wire feeding wheel 62 and the welding wire is low, the adjustment wheel 64 is used to increase the wrap angle between the wire feeding wheel 62 and the welding wire, thereby increasing the driving force of the wire feeding wheel 62 on the welding wire and improving the wire feeding stability.

[0034] See Figure 1 Furthermore, the wire feeding mechanism 60 for the mobile submerged arc welding machine includes a first telescopic rod 65, the fixed end of the first telescopic rod 65 is connected to the base plate 61, and the telescopic end of the first telescopic rod 65 is equipped with an adjusting wheel 64.

[0035] The first telescopic rod 65 includes an inner tube 651 and an outer tube 652. An adjusting wheel 64 is installed at one end of the inner tube 651, and the other end of the inner tube 651 is embedded in one end of the outer tube 652. The other end of the outer tube 652 is fixedly connected to the base plate 61. The inner tube 651 slides relative to the outer tube 652. A set screw 653 is provided on the outer tube 652. The set screw 653 is used to fix the outer tube 652 and the inner tube 651 relative to each other. Its structure adopts conventional technology and is not limited.

[0036] See Figure 1 Furthermore, the wire feeding mechanism 60 for the mobile submerged arc welding machine includes a crank 66, which corresponds one-to-one with a drive wheel 63. The two ends of the crank 66 are the first end and the second end, respectively, and the middle part of the crank 66 is the third end. The drive wheel 63 is installed at the first end of the crank 66, and the third end of the crank 66 is rotatably connected to the base plate 61.

[0037] The crank 66 is preferably arc-shaped. The two cranks 66 are arranged symmetrically. When the cranks 66 rotate, they drive the drive wheel 63 to move closer to or away from the wire feed wheel 62.

[0038] See Figure 1 Furthermore, the wire feeding mechanism 60 for the mobile submerged arc welding machine includes a second telescopic rod 67, the two ends of which are respectively connected to the second end of a crank 66.

[0039] The second telescopic rod 67 includes a connecting rod 671, a top ring 672, a coil spring 673, and a knob 674. One end of the connecting rod 671 is hinged to the second end of a crank 66. The second end of the other crank 66 has a groove into which the connecting rod 671 can be inserted. The top ring 672, the coil spring 673, and the knob 674 are sequentially fitted onto the connecting rod 671 from the other end of the connecting rod 671. The top ring 672 and the connecting rod 671 can slide relative to each other. One end of 73 is connected to the helical spring 673, and the other end is connected to the knob 674. The knob 674 is threaded into the connecting rod 671. When the knob 674 is screwed into the connecting rod 671, the helical spring 673 is compressed and a thrust is applied to the top ring 672. The top ring 672 abuts against the adjacent crank 66, and the two cranks 66 are relatively fixed. By adjusting the screw depth of the knob 674, the force between the two cranks 66 can be adjusted, thereby adjusting the pressure between the drive wheel 63 and the welding wire.

[0040] See Figures 2 to 8 This utility model provides a mobile submerged arc welding machine, including a welding nozzle 30 and a wire feeding mechanism 60 for the mobile submerged arc welding machine. The welding nozzle 30 is disposed on a substrate 61.

[0041] The two cranks 66 are connected by a second telescopic rod 67, ensuring that the forces acting on the two drive wheels 63 are equal. This ensures that the pressure exerted by the two drive wheels 63 on the welding wire is consistent, preventing the welding wire from wobbling as it enters the welding nozzle 30. This prevents the welding nozzle 30 from contacting the welding wire, allowing the flux to flow into the inner cavity of the welding nozzle 30 and out onto the workpiece more smoothly. The arc-starting circuit connection of the welding nozzle 30 is a standard technique and is not specified.

[0042] See Figures 2 to 8 Furthermore, the mobile submerged arc welding machine includes a welding vehicle 20, which includes a vehicle body 22, a column 23, and a crossbeam 21. The column 23 is mounted on the vehicle body 22, and the crossbeam 21 is mounted on the column 23. The base plate 61 is connected to the crossbeam 21.

[0043] In one embodiment, the welding vehicle 20 includes wheels 24 mounted on the vehicle body 22, which are in rolling engagement with the guide rail 50.

[0044] See Figures 2 to 8 Furthermore, the mobile submerged arc welding machine includes a flux supply mechanism 10, which includes a flux hopper 11, a guide pipe 13, and a connecting pipe 14. The flux hopper 11 is connected to the crossbeam 21. The flux hopper 11 includes a conical bottom wall, and the top of the conical bottom wall is provided with a flux outlet. The flux outlet is offset from the geometric center of the conical bottom wall. One end of the guide pipe 13 is connected to the flux outlet, and the other end of the guide pipe 13 is connected to the upper end of the connecting pipe 14. The lower end of the connecting pipe 14 is connected to the inner cavity of the welding nozzle 30.

[0045] The conical bottom wall is a square pyramid, consisting of a first bottom wall, a second bottom wall, a third bottom wall, and a fourth bottom wall. The first and third bottom walls are opposite each other, as are the second and fourth bottom walls. The flux flows on the first and third bottom walls based on the component of gravity of the flux along the first and third bottom walls. If the flux outlet is the geometric center of the conical bottom wall, the first and third bottom walls are symmetrical about the flux outlet, and the component of the flux force on the first and third bottom walls is equal, which is not conducive to the flux entering the flux outlet. Similarly, the situation is the same for the second and fourth bottom walls. The flux outlet deviates from the design, which can break the situation of equal component forces and facilitate the flux entering the flux outlet.

[0046] Among them, the guide pipe 13 is made of elastic material and will be arc-shaped without bending, which would affect the smooth flow of flux. A valve is installed on the guide pipe 13; the connecting pipe 14 is made of rigid material and forms an angle with the horizontal plane.

[0047] In one embodiment, a screen is placed horizontally inside the flux hopper 11 for filtering the recovered flux.

[0048] In one embodiment, the flux supply mechanism 10 includes an angle adjustment component 12, which includes a connecting rod 121, a connecting plate 122, and a friction resistance component 123. The connecting plate 122 is connected to the flux hopper 11. The connecting rod 121 is provided with a first connection point, a second connection point, and a third connection point in sequence. The first connection point is connected to the crossbeam 21, and the third connection point is rotatably connected to the connecting plate 122. The friction resistance component 123 is connected to the second connection point and abuts against the connecting plate 122 to form frictional resistance, thereby applying external force to the flux hopper 11 to overcome the frictional resistance between the friction resistance component 123 and the connecting plate 122. The flux hopper 11 rotates at the third connection point, and the flux remaining in the flux hopper 11 can flow out smoothly.

[0049] In one embodiment, the friction resistance component 123 includes a first screw 1231 and a first nut 1232. The connecting plate 122 is provided with an arc-shaped elongated hole, the center of which is a third connection point. One end of the first screw 1231 is connected to a second connection point, and the other end of the first screw 1231 passes through the elongated hole and is screwed into the first nut 1232.

[0050] In one embodiment, the connecting plate 122 is welded to the flux hopper 11, the first screw 1231 is welded to the second connection point, the first nut 1232 is welded to the handle, and the handle is rotated until the first nut 1232 contacts the connecting plate 122, and the first nut 1232 and the connecting plate 122 form frictional resistance.

[0051] In one embodiment, the angle adjusting member 12 includes a connecting band 124, a second screw 125, and a second nut 126. The connecting rod 121 is connected to the crossbeam 21 at one end in a columnar shape. The connecting band 124 wraps around the connecting rod 121. Both ends of the connecting band 124 pass through a second screw 125. One end of the second screw 125 is threaded to the crossbeam 21, and the other end of the second screw 125 is screwed into the second nut 126.

[0052] See Figures 2 to 8 Furthermore, the inner layer of the guide tube 13 is a flexible tube, and the outer layer of the guide tube 13 is a spring tube.

[0053] See Figures 2 to 8 Furthermore, the other end of the guide tube 13 is embedded from the upper end of the connecting tube 14.

[0054] The inner wall of the connecting pipe 14 and the guide pipe 13 form a spiral exhaust channel, and the gas in the connecting pipe 14 can be discharged from the exhaust channel.

[0055] See Figures 2 to 8 Furthermore, the outer diameter of the guide pipe 13 is smaller than the inner diameter of the connecting pipe 14.

[0056] In one embodiment, see Figure 9 , Figure 10The mobile submerged arc welding machine includes a position adjustment mechanism 40, which includes a base 41, a slide rod 42, a third screw 43, a slider 44, and a handwheel 45. The base 41 is "]" shaped and includes an upper horizontal plate 411, a vertical plate 412, and a lower horizontal plate 413. Two slide rods 42 are provided between the upper horizontal plate 411 and the lower horizontal plate 413. The slider 44 is slidably connected to the slide rods 42. The third screw 43 passes through the upper horizontal plate 411, the slider 44, and the lower horizontal plate 413 in sequence. The third screw 43 is rotatably connected to the upper horizontal plate 411 and the lower horizontal plate 413. The third screw 43 is threadedly engaged with the slider 44 so that the slider 44 can be driven to move along the slide rod 42 by rotating the third screw 43. A handwheel 45 is provided at the upper and lower ends of the third screw 43. The crossbeam 21 is connected to the vertical plate 412, and the slider 44 is connected to the column 23. The slide bar 42 serves as both a sliding support for the slider 44 and a reinforcement for the base 41, preventing deformation of the upper horizontal plate 411 and the lower horizontal plate 413.

[0057] The mobile submerged arc welding machine is equipped with two position adjustment mechanisms 40. The first position adjustment mechanism 40 is located between the column 23 and the crossbeam 21, and the second position adjustment mechanism 40 is located between the column 23 and the vehicle body 22. The vertical plate 412 of the second position adjustment mechanism 40 is connected to the vehicle body 22, and the slider 44 of the second position adjustment mechanism 40 is connected to the column 23. The second position adjustment mechanism 40 is not shown in the figure.

[0058] The column 23 is provided with two crossbeams 21. The first crossbeam 21 is connected to the welding nozzle 30 and the wire feeding mechanism 60. The second crossbeam 21 is provided with a welding wire spool 70, which is used to store welding wire. The released welding wire is fed into the welding nozzle 30 through the wire feeding mechanism 60. The welding nozzle 30, welding wire spool 70, welding carriage 20, and guide rail 50 are the same as those in the disclosed technical solutions and will not be described in detail.

[0059] The modules or units in the device of this utility model embodiment can be merged, divided, or deleted according to actual needs.

[0060] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A wire feeding mechanism for a mobile submerged arc welding machine, characterized by: The device includes a substrate, a wire feeding wheel, a drive wheel, and an adjusting wheel. The substrate has two wire feeding wheels arranged along the length of the substrate. The substrate also has two drive wheels, with each wire feeding wheel corresponding to one of the drive wheels. The drive wheels can move along the width of the substrate to move closer to or further away from the wire feeding wheels. The adjusting wheel is located on the substrate between the two drive wheels and can move along the width of the substrate.

2. The wire feeder for a mobile submerged arc welding machine of claim 1, wherein: The wire feeding mechanism for the mobile submerged arc welding machine includes a first telescopic rod, the fixed end of which is connected to the base plate, and an adjusting wheel is installed on the telescopic end of the first telescopic rod.

3. The wire feeder for a mobile submerged arc welding machine of claim 1, wherein: The wire feeding mechanism for the mobile submerged arc welding machine includes a crank, which corresponds one-to-one with a drive wheel. The two ends of the crank are a first end and a second end, respectively, and the middle part of the crank is a third end. The drive wheel is installed at the first end of the crank, and the third end of the crank is rotatably connected to the substrate.

4. The wire feeder for a mobile submerged arc welding machine of claim 3, wherein: The wire feeding mechanism for the mobile submerged arc welding machine includes a second telescopic rod, the two ends of which are respectively connected to the second end of a crank.

5. A mobile submerged arc welding machine characterized by: It includes a welding nozzle and the wire feeding mechanism for a mobile submerged arc welding machine as described in claim 4, wherein the welding nozzle is disposed on a substrate.

6. The mobile submerged arc welding machine of claim 5, wherein: The mobile submerged arc welding machine includes a welding vehicle, which includes a vehicle body, a column, and a crossbeam. The column is mounted on the vehicle body, and the crossbeam is mounted on the column. The base plate is connected to the crossbeam.

7. The mobile submerged arc welding machine of claim 6, wherein: The mobile submerged arc welding machine includes a flux supply mechanism, which includes a flux hopper, a guide pipe, and a connecting pipe. The flux hopper is connected to a crossbeam and includes a conical bottom wall. The top of the conical bottom wall is provided with a flux outlet, which is offset from the geometric center of the conical bottom wall. One end of the guide pipe is connected to the flux outlet, and the other end of the guide pipe is connected to the upper end of the connecting pipe. The lower end of the connecting pipe communicates with the inner cavity of the welding nozzle.

8. The mobile submerged arc welding machine of claim 7, wherein: The inner layer of the guide tube is a flexible tube, and the outer layer of the guide tube is a spring tube.

9. The mobile submerged arc welding machine of claim 8, wherein: The other end of the guide tube is embedded from the upper end of the connecting tube.

10. The mobile submerged arc welding machine of claim 7, wherein: The outer diameter of the guide tube is smaller than the inner diameter of the connecting tube.

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