Automatic wire feeding device for submerged-arc welding

Abstract

The utility model discloses an automatic wire feeding device for submerged-arc welding, and belongs to the field of welding equipment. According to the technical scheme, the automatic wire feeding device for submerged-arc welding comprises a wire feeding mechanism, a correcting mechanism is further arranged behind the wire feeding mechanism in the welding wire conveying direction, the wire feeding mechanism comprises a wire feeding wheel and a pressing wheel, the peripheral face of the wire feeding wheel and the peripheral face of the pressing wheel are close to each other and spaced by a certain distance, and the wire feeding wheel is connected with a driving mechanism; the correction mechanism comprises a main correction wheel and a slave correction wheel, and the outer peripheral surfaces of the main correction wheel and the slave correction wheel are close to each other and spaced by a certain distance. The welding wire correcting device has the advantages that on the basis of the wire feeding mechanism, the correcting mechanism is additionally arranged, welding wires are continuously clamped behind the wire feeding mechanism through the main correcting wheel and the auxiliary correcting wheel, and the welding wire conveying stability is kept.

Description

Technical Field

[0001] The utility model relates to the field of welding equipment, in particular to an automatic wire feeding device for submerged arc welding. Background Art

[0002] Submerged arc welding (including submerged arc cladding and electroslag cladding) is a welding method in which the arc burns under the flux layer. It has the advantages of stable welding quality, high welding productivity, no arc light and little smoke, and is widely used in vehicle manufacturing, especially in bridge housing welding.

[0003] The welding process of submerged arc welding is that the wire feeding device first feeds the welding wire into the butt joint of the two workpieces, and then the flux supply device covers the welding wire and the top of the butt joint with the flux. At the same time, the welding wire is energized, and the welding wire, flux and workpieces melt to weld the workpieces together.

[0004] The welding wire has two functions in welding operation. One is to conduct electricity and generate ionization with the base material of the weldment to achieve atomic bonding; the other is to serve as a filler material to supplement metal to the weld. When performing submerged arc welding operation, the supply of welding wire is very important. Due to the unstable wire feeding, knotting, wire stripping, intermittent wire feeding and other phenomena will occur. These phenomena will cause poor conductivity of the welding wire and discontinuous filler metal, resulting in welding defects, seriously affecting the quality and performance of the welding product, and increasing the cost of product rework. Summary of the invention

[0005] The utility model provides an automatic wire feeding device for submerged arc welding to solve the problem that the current welding wire feeding is unstable and affects the welding effect.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is: an automatic wire feeding device for submerged arc welding, including a wire feeding mechanism, and a correction mechanism is also provided at the rear of the wire feeding mechanism along the direction of wire feeding. The wire feeding mechanism includes a wire feeding wheel and a clamping wheel, and the outer peripheral surfaces of the wire feeding wheel and the clamping wheel are close to each other and spaced a certain distance apart, and the wire feeding wheel is connected to a driving mechanism; the correction mechanism includes a main correction wheel and a slave correction wheel, and the outer peripheral surfaces of the main correction wheel and the slave correction wheel are close to each other and spaced a certain distance apart. On the basis of the wire feeding mechanism, this solution adds a correction mechanism, and the main correction wheel and the slave correction wheel continuously clamp the welding wire at the rear of the wire feeding mechanism to maintain the stability of wire feeding.

[0007] Preferably, it also includes a first mounting seat and a second mounting seat, the wire feeding mechanism and the correction mechanism are both mounted on the first mounting seat, the driving mechanism is a motor, the motor is mounted on the second mounting seat, and the output shaft of the motor is connected to the wire feeding wheel.

[0008] Preferably, the output shaft of the motor is connected to a reducer, and the power spindle of the reducer passes through the second mounting seat and the first mounting seat in sequence and is connected to the wire feeding wheel.

[0009] Preferably, an insulating pad is provided between the first mounting seat and the second mounting seat. During operation, the welding wire is energized, and the insulating pad is provided to prevent the current from affecting the motor.

[0010] Preferably, a clamping wheel mounting seat and a clamping wheel adjustment mechanism are provided on the first mounting seat, the upper portion of the clamping wheel mounting seat is hinged to the first mounting seat, the clamping wheel adjustment mechanism comprises a first jacking screw and a first threaded female bracket, the first threaded female bracket is fixedly arranged on the first mounting seat, the first jacking screw is threadedly mounted in the first threaded female bracket, one end of the first jacking screw is pressed against the lower portion of the clamping wheel mounting seat, and the clamping wheel is mounted on the clamping wheel mounting seat. Turning the first jacking screw can adjust the spacing between the clamping wheel and the wire feeding wheel, that is, the degree of clamping can be flexibly adjusted according to different processing parameters such as wire diameter and wire feeding rate, so that the wire feeding process under various working conditions is smoother and more stable.

[0011] Preferably, a slave correction wheel mounting seat and a slave correction wheel adjustment mechanism are provided on the first mounting seat, the lower portion of the slave correction wheel mounting seat is hinged to the first mounting seat, the slave correction wheel adjustment mechanism comprises a second tightening screw and a second threaded female bracket, the second threaded female bracket is fixedly arranged on the first mounting seat, the second tightening screw is threadedly installed in the second threaded female bracket, one end of the second tightening screw is pressed against the upper portion of the slave correction wheel mounting seat, and the slave correction wheel is mounted on the slave correction wheel mounting seat. Turning the second tightening screw can adjust the spacing between the main and slave correction wheels, adjust the degree of clamping of the two correction wheels on the welding wire according to different working conditions, and adjust the correction effect.

[0012] Preferably, along the wire feeding direction, the main correction wheel is located behind the slave correction wheel. The main correction wheel and the slave correction wheel are staggered in the wire feeding direction, which can better correct the bending of the welding wire.

[0013] Preferably, along the wire feeding direction, a welding gun is installed behind the correction mechanism, and a wire guide hole plate is provided in front of the wire feeding mechanism.

[0014] Preferably, a mounting platform is provided on the first mounting seat, a welding gun locking block is installed on the mounting platform through a locking bolt, and semicircular grooves are respectively provided on the opposite surfaces of the welding gun locking block and the mounting platform, and the two semicircular grooves clamp the welding gun together. The welding gun is detachable and can be replaced with welding guns of different calibers, thereby improving the versatility of the device.

[0015] Preferably, the second mounting seat is provided with a mounting column, the first mounting seat is provided with a mounting hole and a locking groove, the locking groove is arranged along the radial direction of the mounting hole, one end of the locking groove is connected to the mounting hole, and the other end of the locking groove passes through the outer side of the first mounting seat, and the first mounting seat is provided with a connecting bolt, the connecting bolt is perpendicular to the locking groove and tightens the part of the groove wall on both sides of the first mounting seat corresponding to the locking groove. The rotation angle between the first mounting seat and the second mounting seat can be adjusted, so that the welding and wire feeding directions can be adjusted quickly and conveniently.

[0016] It can be seen from the above technical scheme that the advantages of the utility model are: the device adds a correction mechanism behind the wire feeding mechanism, and at the same time, the positions of the clamping wheel in the wire feeding mechanism and the slave correction wheel in the correction mechanism are adjustable, the welding gun can be disassembled and replaced, and can match welding wires of different diameters. The welding wire is transmitted downward between the wire feeding wheel and the clamping wheel, and is corrected between the main correction wheel and the slave correction wheel, which avoids the problems of bending and tangling of the welding wire during the wire feeding process, ensures the stability of the welding wire transportation, and improves the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a specific implementation method of the utility model.

[0019] Description of main reference numerals

[0020] 1. Motor, 2. Reducer, 21. Insulation pad, 22. Power spindle, 23. Wire feeding wheel, 3. First mounting seat, 31. Pressure wheel, 32. Pressure wheel mounting seat, 33. First tightening screw, 34. First threaded female bracket, 35. Connecting bolt, 4. Main correction wheel, 41. Main correction wheel locking bolt, 42. Slave correction wheel, 43. Slave correction wheel mounting seat, 44. Second tightening screw, 45. Second threaded female bracket, 5. Welding gun, 51. Locking bolt, 52. Locking block, 6. Second mounting seat, 7. Wire guide hole plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0022] like Figure 1 As shown, a submerged arc welding automatic wire feeding device includes a first mounting seat 3 and a second mounting seat 6, the second mounting seat 6 is an L-shaped plate, including a first panel and a second panel perpendicular to each other, the first mounting seat 3 is a flat plate structure, the first mounting seat 3 is parallel to the first panel of the second mounting seat 6, and the second mounting seat 6 is provided with a mounting column, the first mounting seat 3 is provided with a mounting hole and a locking groove, the locking groove is arranged along the radial direction of the mounting hole, one end of the locking groove is connected to the mounting hole, and the other end of the locking groove passes through to the outer side surface of the first mounting seat 3, that is, a C-shaped snap-fit ​​structure is formed, the mounting column is inserted into the mounting hole, and a connecting bolt 35 is installed on the first mounting seat 3, the connecting bolt 35 is perpendicular to the locking groove and tightens the part of the groove wall on both sides of the locking groove on the second mounting seat, and an insulating pad 21 is provided between the first mounting seat 3 and the second mounting seat 6.

[0023] The first mounting seat 3 is provided with a wire feeding mechanism and a correction mechanism, which are arranged along the welding wire feeding direction (from front to back, i.e. Figure 1 The wire feeding mechanism is transported from top to bottom in the process), and the correction mechanism is located at the rear of the wire feeding mechanism. Specifically, the wire feeding mechanism includes a wire feeding wheel 23 and a clamping wheel 31. The outer peripheral surfaces of the wire feeding wheel 23 and the clamping wheel 31 are close to each other and spaced a certain distance apart. The wire feeding wheel 23 is connected with a driving mechanism, and the driving mechanism includes a motor 1 and a reducer 2. The motor 1 and the reducer 2 have reserved mounting holes, which are mounted on a side of the first panel of the second mounting seat 6 close to the second panel through a long screw and a nut. The output shaft of the motor 1 and the power spindle 22 of the reducer 2 pass through the second mounting seat and the first mounting seat in turn and are connected to the wire feeding wheel 23. The wire feeding wheel 23 is driven to rotate by the speed reducer 2, and a pressing wheel mounting seat 32 and a pressing wheel adjusting mechanism are provided on the first mounting seat 3. The upper part of the pressing wheel mounting seat 32 is hinged to the first mounting seat 3, and the pressing wheel adjusting mechanism includes a first jacking screw 33 and a first threaded female bracket 34. The first threaded female bracket 34 is fixedly arranged on the first mounting seat 3, and the first jacking screw 33 is threadedly installed in the first threaded female bracket 34. One end of the first jacking screw 33 presses against the lower part of the pressing wheel mounting seat 32, and the pressing wheel 31 is installed on the pressing wheel mounting seat 32.

[0024] The correction mechanism includes a main correction wheel 4 and a slave correction wheel 42. The outer circumferences of the main correction wheel 4 and the slave correction wheel 42 are close to each other and spaced a certain distance apart. Along the welding wire feeding direction, the main correction wheel 4 is located behind the slave correction wheel 42, that is, Figure 1 In the figure, the slave correction wheel 42 is located above the main correction wheel, and the main correction wheel 4 is installed on the first mounting seat 3 through the main correction wheel locking bolt 41. The first mounting seat 3 is provided with a slave correction wheel mounting seat 43 and a slave correction wheel adjustment mechanism. The lower part of the slave correction wheel mounting seat 43 is hinged to the first mounting seat 3, and the slave correction wheel adjustment mechanism includes a second tightening screw 44 and a second threaded female bracket 45. The second threaded female bracket 45 is fixedly arranged on the first mounting seat 3, and the second tightening screw 44 is threadedly installed in the second threaded female bracket 45. One end of the second tightening screw 44 is pressed against the upper part of the slave correction wheel mounting seat 43, and the slave correction wheel 42 is installed on the slave correction wheel mounting seat 43.

[0025] Along the wire feeding direction, a welding gun 5 is installed at the rear of the correction mechanism. Specifically, a mounting platform is provided on the first mounting seat 3, and a welding gun locking block 52 is installed on the mounting platform through a locking bolt 51. The welding gun locking block 52 and the opposite surface of the mounting platform are respectively provided with semicircular grooves, and the two semicircular grooves jointly clamp the welding gun 5; a wire guide hole plate 7 is provided in front of the wire feeding mechanism.

[0026] Before welding begins, the welding wire is introduced from the wire guide hole plate 7 into between the wire feeding wheel 23 and the clamping wheel 31. By adjusting the position of the first clamping screw 33, the welding wire is clamped on the wire feeding wheel 23 to prevent slipping and downward transmission. The welding wire passes through the main correction wheel 4 and the slave correction wheel 42 and is introduced into the welding gun 5. The wire distance of the slave second clamping screw 44 is adjusted according to the curvature of the welding wire, and the welding wire is clamped on the main correction wheel 4 to achieve the purpose of correcting the welding wire. When welding begins, the motor 1 starts to drive the wire feeding wheel 23 to rotate through the reducer 2. The welding wire is transmitted downward between the wire feeding wheel 23 and the clamping wheel 31. The welding wire is corrected between the main correction wheel 4 and the slave correction wheel 42 to avoid knotting, bending, etc. of the welding wire. The speed of the motor 1 is set according to the welding speed, and the speed ratio is converted according to the reducer 2 to ensure the uniform supply of welding wire and improve the welding quality.

[0027] It can be seen from the above technical scheme that the beneficial effect of the utility model lies in that the device adds a correction mechanism behind the wire feeding mechanism, and at the same time, the positions of the clamping wheel in the wire feeding mechanism and the slave correction wheel in the correction mechanism are adjustable, and the welding gun can be disassembled and replaced to match welding wires of different diameters. The welding wire is transmitted downward between the wire feeding wheel and the clamping wheel, and is corrected between the main correction wheel and the slave correction wheel, which avoids the problems of bending and tangling of the welding wire during the wire feeding process, ensures the stability of the welding wire transportation, and improves the welding effect.

[0028] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A submerged arc welding automatic wire feeding device, comprising a wire feeding mechanism, characterized in that: Along the welding wire feeding direction, a correction mechanism is also provided at the rear of the wire feeding mechanism, the wire feeding mechanism comprising a wire feeding wheel (23) and a clamping wheel (31), the outer circumferences of the wire feeding wheel (23) and the clamping wheel (31) being close to each other and spaced a certain distance apart, and the wire feeding wheel (23) being connected to a driving mechanism; the correction mechanism comprising a main correction wheel (4) and a slave correction wheel (42), the outer circumferences of the main correction wheel (4) and the slave correction wheel (42) being close to each other and spaced a certain distance apart; and further comprising a first mounting seat (3) and a second mounting seat (6), the wire feeding mechanism and the correction mechanism being both mounted on the first mounting seat (3), the driving mechanism being a motor (1), the motor (1) being mounted on the second mounting seat (6), and the output shaft of the motor (1) being connected to the wire feeding wheel (23).

2. The automatic wire feeding device for submerged arc welding according to claim 1, characterized in that: The output shaft of the motor (1) is connected to a reducer (2); the power main shaft of the reducer (2) passes through the second mounting seat and the first mounting seat in sequence and is connected to the wire feeding wheel (23).

3. The automatic wire feeding device for submerged arc welding according to claim 1, characterized in that: An insulating pad (21) is provided between the first mounting seat (3) and the second mounting seat (6).

4. The automatic wire feeding device for submerged arc welding according to claim 1, characterized in that: A pressure wheel mounting seat (32) and a pressure wheel adjustment mechanism are provided on the first mounting seat (3); the upper portion of the pressure wheel mounting seat (32) is hinged to the first mounting seat; the pressure wheel adjustment mechanism comprises a first tightening screw (33) and a first threaded female bracket (34); the first threaded female bracket (34) is fixedly arranged on the first mounting seat (3); the first tightening screw (33) is threadedly mounted in the first threaded female bracket (34); one end of the first tightening screw (33) is pressed against the lower portion of the pressure wheel mounting seat (32); and the pressure wheel (31) is mounted on the pressure wheel mounting seat (32).

5. The automatic wire feeding device for submerged arc welding according to claim 1, characterized in that: A secondary correction wheel mounting seat (43) and a secondary correction wheel adjustment mechanism are provided on the first mounting seat (3); the lower portion of the secondary correction wheel mounting seat (43) is hinged to the first mounting seat (3); the secondary correction wheel adjustment mechanism comprises a second tightening screw (44) and a second threaded female bracket (45); the second threaded female bracket (45) is fixedly arranged on the first mounting seat (3); the second tightening screw (44) is threadedly mounted in the second threaded female bracket (45); one end of the second tightening screw (44) is pressed against the upper portion of the secondary correction wheel mounting seat (43); and the secondary correction wheel (42) is mounted on the secondary correction wheel mounting seat (43).

6. The automatic wire feeding device for submerged arc welding according to any one of claims 1 to 5, characterized in that: Along the welding wire conveying direction, the main correction wheel (4) is located behind the secondary correction wheel (42).

7. The automatic wire feeding device for submerged arc welding according to any one of claims 1 to 5, characterized in that: Along the welding wire conveying direction, a welding gun (5) is installed behind the correction mechanism, and a wire guide hole plate (7) is provided in front of the wire feeding mechanism.

8. The automatic wire feeding device for submerged arc welding according to claim 7, characterized in that: The first mounting seat (3) is provided with a mounting platform, a welding gun locking block (52) is mounted on the mounting platform via a locking bolt (51), and the welding gun locking block (52) and the mounting platform are provided with semicircular grooves on the surfaces opposite to each other, and the two semicircular grooves jointly clamp the welding gun (5).

9. The automatic wire feeding device for submerged arc welding according to any one of claims 1 to 5, characterized in that: The second mounting seat (6) is provided with a mounting column, the first mounting seat (3) is provided with a mounting hole and a locking groove, the locking groove is arranged along the radial direction of the mounting hole, one end of the locking groove is connected to the mounting hole, and the other end of the locking groove passes through the outer side surface of the first mounting seat (3), and the first mounting seat (3) is installed with a connecting bolt (35), the connecting bolt (35) is perpendicular to the locking groove and tightens the part of the groove wall on both sides of the first mounting seat (3) corresponding to the locking groove.

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