Synchronous wire feeding type welding structure equipment for double wire submerged arc welding

Abstract

This invention discloses a synchronous wire-feeding welding structure for dual-wire submerged arc welding, belonging to the field of dual-wire submerged arc welding technology. The equipment includes a mobile trolley with a fixed cross support frame. One end of the support frame is equipped with an elevator, a wire feeder, and a flux hopper. A welding head is located at the lower end of the wire feeder, and two sets of welding wire spools are symmetrically arranged at the other end, with a control box installed thereon. The wire feeder is divided into a first compartment and a second compartment by a mounting base, each accommodating the two sets of wire feeding mechanisms. Each compartment has a first speed sensor and a second speed sensor arranged coaxially along the vertical axis. A vertical drive wheel and a pressure wheel assembly are mounted inside, rotating within each compartment. The four drive wheels are synchronously driven by the same motor. The speed sensors and the pressure wheel assembly are electrically connected to the control box. This invention utilizes the coordinated operation of the dual speed sensors and the pressure wheel assembly to precisely control the dual-wire wire feeding speed, eliminate wire feeding rate deviations, and effectively improve the weld formation stability and overall welding quality of dual-wire submerged arc welding.

Description

Technical Field

[0001] This invention relates to the field of twin-wire submerged arc welding technology, specifically a synchronous wire feeding welding structure equipment for twin-wire submerged arc welding. Background Technology

[0002] Existing dual-wire submerged arc welding machines typically use two sets of wire feeders, each feeding one welding wire to achieve dual-wire feeding. However, in this case, it is difficult to make the wire feeding efficiency of the two sets of wire feeders completely synchronized, resulting in relatively poor welding efficiency. If a single wire feeder is used to feed two welding wires simultaneously, the problem is that the specifications and dimensions of the welding wires are not completely the same. This leads to inconsistent clamping force on the two welding wires during the feeding process, resulting in a difference in the feeding speed of the two welding wires.

[0003] The patent with authorization announcement number CN218503590U describes a dual welding wire synchronous wire feeder, which uses two wire feeding main units to press and feed two welding wires respectively. At the same time, a drive motor drives two transmission shafts to rotate synchronously, thereby making the wire feeding speed of the two wire feeding main units consistent. During the conveying process, both welding wires are in a fully pressed state. In this way, the two welding wires can be conveyed synchronously, thereby ensuring welding efficiency.

[0004] However, the above-mentioned device still has certain problems in use, mainly that: the wire feeding mechanism speed synchronization is achieved by mechanical linkage of a single motor, without adapting to the working conditions where the welding wire has individual tolerances in its own specifications and dimensions and inconsistent surface conditions. It cannot compensate for the feed speed error caused by the difference in shape tolerance and frictional resistance between the two welding wires, and it is still difficult to fundamentally eliminate the difference in wire feeding speed between the two welding wires. The synchronization accuracy of the dual welding wire feeding is limited, which will still affect the forming stability and welding quality of dual-wire submerged arc welding.

[0005] Based on this, a synchronous wire feeding welding structure equipment for twin-wire submerged arc welding is provided, which can eliminate the drawbacks of existing devices. Summary of the Invention

[0006] The purpose of this invention is to provide a synchronous wire feeding welding structure equipment for dual-wire submerged arc welding to solve the problems in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A synchronous wire-feeding welding structure equipment for dual-wire submerged arc welding includes a mobile trolley with a cross support frame fixed on it. A lifting rudder is fixed to one end of the cross support frame, and a wire feeder is mounted on one side of the lifting rudder. A welding head is located at the lower end of the wire feeder, and a flux hopper is located on one side of the wire feeder. Two sets of welding wire reels are symmetrically arranged at the other end of the cross support frame. A control box is mounted on the end of the cross support frame near the welding wire reels. The wire feeder includes a mounting base, within which a first compartment and a second compartment are symmetrically arranged for mounting the two sets of wire feeding mechanisms. Two wire inlets are symmetrically arranged at the top of the two compartments. Each set of wire feeding mechanisms includes a first speed sensor located at the lower end of the wire inlet. A second speed sensor is arranged vertically and coaxially with the first speed sensor at the lower end of the compartment. Two vertically arranged drive wheels are rotatably mounted within the compartment. A pressure wheel assembly is located on one side of each drive wheel. The first speed sensor, the second speed sensor, and the pressure wheel assembly are all electrically connected to the control box. The four drive wheels in the two compartments are synchronously driven by a single motor.

[0008] Based on the above technical solutions, the present invention also provides the following optional technical solutions: In one alternative: the two drive wheels corresponding to the positions in the two compartments are mounted on the same spindle, the motor and the four drive wheels are synchronously driven by a gear set, and a sealing plate is provided on one side of the first compartment and the second compartment.

[0009] In one alternative: the clamping wheel assembly includes a clamping wheel correspondingly disposed on one side of the drive wheel, the clamping wheel being rotatably mounted on the movable arm, one end of the movable arm being rotatably mounted on the bulkhead, and one end of the two movable arms in the same bulkhead being provided with an adjusting member.

[0010] In one alternative embodiment: the adjusting component includes an electric push rod mounted on one side of the mounting base, the output end of the electric push rod is fixed with an adjusting seat, the adjusting seat is symmetrically provided with two sliding grooves, one end of the movable arm is provided with a linkage column, the linkage column is slidably installed in the sliding groove, and the output end of the electric push rod is also provided with an electromagnetic brake.

[0011] In one alternative: a straightener is also installed on the bulkhead, the straightener being positioned at the midpoint of the connecting shaft between the first speed sensor and the second speed sensor.

[0012] In one alternative: one side of the mounting base is connected to the elevator via an adjustable pitch hinge, one side of the wire inlet is provided with a connecting seat for mounting the flux hopper, and the other side of the wire inlet is provided with a wire inlet angle limiting component.

[0013] In one alternative embodiment: the wire feed angle limiting assembly includes two support seats symmetrically fixed on a mounting base. A fixing rod is fixedly installed on the support seat. Two guide wheels corresponding to the wire feed port positions are rotatably installed on the fixing rod. A guide rail is fixed to the outside of the support seat. A movable plate is slidably installed on the guide rail. The movable plate is provided with a guide groove that matches the guide rail. A first spring is installed in the guide groove. A limit rod is fixedly connected to one end of the two movable plates. Multiple limit blocks are fixed on the side of the limit rod near the guide wheel. The limit blocks are arranged on both sides of the guide wheel.

[0014] In one alternative embodiment: the cross support frame between the wire feeder and the welding wire spool is further provided with an adaptive limiting component for limiting the vertical bending arc of the welding wire. The adaptive limiting component includes a support block, the lower end of the support block is provided with a plug rod that is inserted into the cross support frame, the upper end of the support block is fixed with a support rod, the top end of the support rod is slidably fitted with a movable rod, the top end of the movable rod is provided with a limiting hook for placing the welding wire, the lower end of the movable rod is provided with a second spring, and a support block for supporting the second spring is fixed on the support rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This application eliminates the problems in the prior art where the wire feeding mechanism speed synchronization is achieved solely through single-motor mechanical linkage, which cannot adapt to individual tolerances of welding wire specifications and dimensions, inconsistent surface conditions, and is difficult to compensate for feed speed errors, thus limiting the synchronization accuracy of dual-wire feeding. By cooperating between the speed sensor and the pressure wheel assembly, it achieves precise control of the dual-wire feeding speed, eliminates the difference in wire feeding speed, and improves the stability and welding quality of dual-wire submerged arc welding.

[0016] 2. This application sets up a wire feeding angle limiting component, uses the wire guide wheel on the support base to guide the welding wire, and works with the limit block on the movable plate to accurately limit the position of the welding wire on both sides. The limit distance can be adaptively adjusted by the first spring according to the welding wire specification, effectively preventing left and right deviation during the wire feeding process, ensuring accurate and consistent wire feeding angle, and thus ensuring wire feeding synchronization.

[0017] 3. This application sets an adaptive limiting component, uses a limiting hook to lift the welding wire, and through the elastic action of the second spring, can adaptively adjust the height of the movable rod according to the tension changes during the welding wire feeding process, flexibly limiting the vertical bending arc of the welding wire, avoiding uneven wire feeding resistance caused by bending of the welding wire, and further improving the wire feeding synchronization. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the mobile vehicle in this invention.

[0020] Figure 3 This is a schematic diagram of the structure inside the first compartment of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure inside the second compartment in this invention.

[0022] Figure 5 This is a schematic diagram of the pressure wheel assembly in this invention.

[0023] Figure 6 This is a schematic diagram of the wire feed angle limiting component in this invention.

[0024] Figure 7 This is a schematic diagram of the adaptive limiting component in this invention.

[0025] Figure reference numerals: 1. Moving trolley; 2. Cross support frame; 3. Elevator; 4. Wire feeder; 41. Mounting base; 411. First compartment; 412. Second compartment; 413. Sealing plate; 414. Wire inlet; 415. Connecting seat; 42. Hinge seat; 43. First speed sensor; 44. Second speed sensor; 45. Drive wheel; 451. Gear set; 452. Motor; 46. Pressure wheel assembly; 461. Pressure wheel; 462. Movable arm; 463. Linkage column; 464. Adjusting seat; 465. Slide groove; 466. Electric push rod; 467. Electromagnetic brake; 47. Straightener; 48. Wire feed angle limiting assembly; 481. Support base; 482. Fixed rod; 483. Guide wheel; 484. Guide rail; 485. Movable plate; 486. Guide groove; 487. First spring; 488. Limiting rod; 489. Limiting block; 5. Welding head; 6. Flux hopper; 7. Welding wire spool; 8. Control box; 9. Adaptive limiting component; 901. Support block; 902. Insert rod; 903. Support rod; 904. Movable rod; 905. Support block; 906. Second spring; 907. Limiting hook. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] In one embodiment, such as Figures 1-5As shown, the synchronous wire feeding welding structure equipment for dual-wire submerged arc welding includes a mobile carriage 1, a cross support frame 2 fixed on the mobile carriage 1, an elevator rudder 3 fixed at one end of the cross support frame 2, a wire feeder 4 mounted on one side of the elevator rudder 3, a welding head 5 at the lower end of the wire feeder 4, a flux hopper 6 on one side of the wire feeder 4, two sets of welding wire reels 7 symmetrically arranged at the other end of the cross support frame 2, and a control box 8 mounted near the end of the cross support frame 2 near the welding wire reels 7. The wire feeder 4 includes a mounting base 41, and a first compartment 411 and a second compartment 412 symmetrically arranged within the mounting base 41 for mounting the two sets of wire feeding mechanisms. Two symmetrical yarn inlets 414 are provided at the top of the two compartments. Each yarn feeding mechanism includes a first speed sensor 43 located at the lower end of the yarn inlet 414, and a second speed sensor 44 arranged vertically and coaxially with the first speed sensor 43 at the lower end of the compartment. Two vertically arranged drive wheels 45 are rotatably mounted inside the compartment. A pressure wheel assembly 46 is provided on one side of the drive wheels 45. The first speed sensor 43, the second speed sensor 44, and the pressure wheel assembly 46 are all electrically connected to the control box 8. The four drive wheels 45 in the two compartments are synchronously driven by a motor 452. The positions of the two compartments are... The two corresponding drive wheels 45 are mounted on the same spindle. The motor 452 and the four drive wheels 45 are synchronously driven by the gear set 451. Each side of the first compartment 411 and the second compartment 412 is provided with a sealing plate 413. The pressure wheel assembly 46 includes a pressure wheel 461 corresponding to one side of the drive wheel 45. The pressure wheel 461 is rotatably mounted on the movable arm 462. One end of the movable arm 462 is rotatably mounted on the compartment wall. The two movable arms 462 in the same compartment are provided with an adjusting component at one end. The adjusting component includes an electric push rod 466 mounted on one side of the mounting base 41. An adjustment seat 464 is fixed at the output end of the 466. Two sliding grooves 465 are symmetrically arranged on the adjustment seat 464. A linkage column 463 is provided at one end of the movable arm 462. The linkage column 463 is slidably installed in the sliding groove 465. An electromagnetic brake 467 is also provided at the output end of the electric push rod 466. The electromagnetic brake 467 can lock the position of the electric push rod 466 in time when it is necessary to stop or adjust, so as to ensure the stable pressing state of the pressure wheel 461. A straightener 47 is also installed on the bulkhead. The straightener 47 is located in the middle of the connecting shaft between the first speed sensor 43 and the second speed sensor 44.

[0028] In use, the welding wires on the two sets of welding wire spools 7 are respectively inserted into the first compartment 411 and the second compartment 412 through the wire inlet 414. After passing through the first speed sensor 43, the straightener 47, the second speed sensor 44, the two drive wheels 45 and the clamping wheel 461, they enter the welding head 5. Then, the motor 452 is started to drive the drive wheels 45 in the two compartments to rotate synchronously, driving the two welding wires to move downward. During the wire feeding process, the speed of the wire feeding end of the two welding wires is monitored by the first speed sensor 43 and the speed of the wire exiting end of the two welding wires is monitored by the second speed sensor 44. According to the speed difference between the two welding wires at the wire feeding end, the electric push rod 466 is extended and retracted by the control box 8, which drives the adjusting seat 464 to move. The sliding groove 465 on the adjusting seat 464 drives the movable arm 462 to rotate through the linkage column 463, thereby adjusting the clamping force of the clamping wheel 461 on the welding wire, realizing the adjustment of the welding wire speed until the speed of the two welding wires at the wire exiting end is the same, thus realizing synchronous wire feeding.

[0029] In one embodiment, such as Figure 4 and Figure 6 As shown, one side of the mounting base 41 is connected to the elevator 3 via an adjustable-angle hinge 42. One side of the wire inlet 414 is provided with a connecting seat 415 for mounting the flux hopper 6. The other side of the wire inlet 414 is provided with a wire inlet angle limiting assembly 48. The wire inlet angle limiting assembly 48 includes two support seats 481 symmetrically fixed on the mounting base 41. A fixing rod 482 is fixedly mounted on the support seat 481, and two rods 482 are rotatably mounted on the fixing rod 482, with positions opposite to the wire inlet 414. The guide wheel 483 and the support base 481 are respectively fixed with a guide rail 484. A movable plate 485 is slidably installed on the guide rail 484. The movable plate 485 is provided with a guide groove 486 that matches the guide rail 484. A first spring 487 is installed in the guide groove 486. One end of the two movable plates 485 is fixedly connected to a limit rod 488. A plurality of limit blocks 489 are fixed on the side of the limit rod 488 near the guide wheel 483. The limit blocks 489 are arranged on both sides of the guide wheel 483.

[0030] During use, after the welding wire is drawn from the wire spool 7, it first passes through the guide groove on the wire guide wheel 483 and then enters the wire inlet 414. The wire guide wheel 483 plays a stable guiding role for the welding wire, reducing the friction between the welding wire and the wire inlet 414. At the same time, under the elastic force of the first spring 487, the movable plate 485 drives the limiting rod 488 to move along the guide rail 484 towards the wire guide wheel 483, so that the limiting rod 488 abuts against the surface of the welding wire, preventing the welding wire from protruding to one side under the action of the wire guide wheel 483, which would increase the friction between the welding wire and the wire inlet 414, thus ensuring the synchronous feeding of the two wires.

[0031] In one embodiment, such as Figure 2 and Figure 7As shown, the cross support frame 2 between the wire feeder 4 and the welding wire spool 7 is also provided with an adaptive limiting component 9 for limiting the vertical bending arc of the welding wire. The adaptive limiting component 9 includes a support block 901. The lower end of the support block 901 is provided with a plug rod 902 that is inserted into the cross support frame 2. The upper end of the support block 901 is fixed with a support rod 903. The top end of the support rod 903 is slidably fitted with a movable rod 904. The top end of the movable rod 904 is provided with a limiting hook 907 for placing the welding wire. The lower end of the movable rod 904 is provided with a second spring 906. The support block 905 for supporting the second spring 906 is fixed on the support rod 903.

[0032] In use, the adaptive limiting component 9 is fixed to the cross support frame 2 by the insertion rod 902, so that the limiting hook 907 is located between the wire spool 7 and the wire inlet 414 of the wire feeder 4. After the welding wire is drawn out from the wire spool 7, it is placed in the limiting hook 907. The limiting hook 907 supports the welding wire, and through the elastic action of the second spring 906, the height of the movable rod 904 can be adaptively adjusted according to the tension change during the welding wire feeding process, flexibly limiting the vertical bending arc of the welding wire, avoiding uneven wire feeding resistance caused by bending of the welding wire, and further improving the synchronization of dual wire feeding.

[0033] The above embodiments disclose a synchronous wire feeding welding structure equipment for dual-wire submerged arc welding. Its working principle is as follows: During the welding process, the control box 8 is started to control the motor 452 to work. The motor 452 drives the four drive wheels 45 in the two compartments to rotate synchronously through the gear set 451. Under the clamping action of the clamping wheel assembly 46, the two welding wires are driven to be fed downward synchronously to achieve synchronous wire feeding of the two wires. During the wire feeding process, the first speed sensor 43 monitors the speed of the wire feeding end of the two welding wires in real time, and the second speed sensor 44 monitors the speed of the wire output end synchronously. The two sets of speed data are transmitted to the control box 8 in real time, and the control box 8 analyzes and judges the speed difference between the two welding wires at the wire feeding end. When a speed deviation is detected, the control box 8 controls the extension and retraction of the electric push rod 466, which drives the adjustment seat 464 to move. The slide groove 465 on the adjustment seat 464 drives the movable arm 462 to rotate through the linkage column 463, thereby adjusting the clamping force of the clamping wheel 461 on the corresponding welding wire. By changing the clamping force, the feeding speed of the welding wire is adjusted until the second speed sensor 44 detects that the output speed of the two welding wires is consistent, ensuring the synchronicity of the dual wire feeding.

[0034] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A synchronous wire feeding welding structure equipment for dual-wire submerged arc welding, comprising a mobile trolley (1), a cross support frame (2) fixed on the mobile trolley (1), an elevator (3) fixed at one end of the cross support frame (2), a wire feeder (4) installed on one side of the elevator (3), a welding head (5) provided at the lower end of the wire feeder (4), a flux hopper (6) provided on one side of the wire feeder (4), two sets of welding wire reels (7) symmetrically provided at the other end of the cross support frame (2), and a control box (8) installed at the end of the cross support frame (2) near the welding wire reels (7), characterized in that, The wire feeder (4) includes a mounting base (41). The mounting base (41) is symmetrically provided with a first compartment (411) and a second compartment (412) for mounting two sets of wire feeding mechanisms. The top of the two compartments is symmetrically provided with two wire inlets (414). Each set of wire feeding mechanisms includes a first speed sensor (43) located at the lower end of the wire inlet (414). The lower end of the compartment is provided with a second speed sensor (44) arranged vertically and coaxially with the first speed sensor (43). Two vertically arranged drive wheels (45) are rotatably installed in the compartment. A pressure wheel assembly (46) is provided on one side of the drive wheel (45). The first speed sensor (43), the second speed sensor (44), and the pressure wheel assembly (46) are all electrically connected to the control box (8). The four drive wheels (45) in the two compartments are synchronously driven by a motor (452).

2. The synchronous wire feeding welding structure equipment for twin-wire submerged arc welding according to claim 1, characterized in that, The two drive wheels (45) corresponding to the positions in the two compartments are mounted on the same spindle. The motor (452) and the four drive wheels (45) are synchronously driven by a gear set (451). A sealing plate (413) is provided on one side of the first compartment (411) and the second compartment (412).

3. The synchronous wire feeding welding structure equipment for twin-wire submerged arc welding according to claim 1, characterized in that, The clamping wheel assembly (46) includes a clamping wheel (461) correspondingly disposed on one side of the drive wheel (45). The clamping wheel (461) is rotatably mounted on the movable arm (462). One end of the movable arm (462) is rotatably mounted on the bulkhead. One end of the two movable arms (462) in the same bulkhead is provided with an adjusting member.

4. The synchronous wire feeding welding structure equipment for twin-wire submerged arc welding according to claim 3, characterized in that, The adjusting component includes an electric push rod (466) installed on one side of the mounting base (41). The output end of the electric push rod (466) is fixed with an adjusting seat (464). The adjusting seat (464) is symmetrically provided with two sliding grooves (465). One end of the movable arm (462) is provided with a linkage column (463). The linkage column (463) is slidably installed in the sliding groove (465). The output end of the electric push rod (466) is also provided with an electromagnetic brake (467).

5. The synchronous wire feeding welding structure equipment for twin-wire submerged arc welding according to claim 3, characterized in that, A straightener (47) is also installed on the bulkhead. The straightener (47) is located at the middle position of the connecting shaft between the first speed sensor (43) and the second speed sensor (44).

6. The synchronous wire feeding welding structure equipment for twin-wire submerged arc welding according to claim 1, characterized in that, The mounting base (41) is connected to the elevator (3) on one side via an adjustable pitch hinge (42), and the wire inlet (414) is provided with a connecting seat (415) for installing the flux hopper (6) on one side, and a wire inlet angle limiting component (48) is provided on the other side of the wire inlet (414).

7. The synchronous wire feeding welding structure equipment for twin-wire submerged arc welding according to claim 6, characterized in that, The wire feed angle limiting component (48) includes two support seats (481) symmetrically fixed on the mounting base (41). A fixing rod (482) is fixedly installed on the support seat (481). Two guide wheels (483) corresponding to the position of the wire feed port (414) are rotatably installed on the fixing rod (482). A guide rail (484) is fixed on the outside of the support seat (481). A movable plate (485) is slidably installed on the guide rail (484). A guide groove (486) matching the guide rail (484) is provided on the movable plate (485). A first spring (487) is installed in the guide groove (486). A limit rod (488) is fixedly connected to one end of the two movable plates (485). A plurality of limit blocks (489) are fixed on the side of the limit rod (488) near the guide wheel (483). The limit blocks (489) are arranged on both sides of the guide wheel (483).

8. The synchronous wire feeding welding structure equipment for twin-wire submerged arc welding according to claim 1, characterized in that, The cross support frame (2) between the wire feeder (4) and the welding wire spool (7) is also provided with an adaptive limiting component (9) for limiting the vertical bending arc of the welding wire. The adaptive limiting component (9) includes a support block (901). The lower end of the support block (901) is provided with a plug rod (902) that is inserted into the cross support frame (2). The upper end of the support block (901) is fixed with a support rod (903). The top end of the support rod (903) is slidably fitted with a movable rod (904). The top end of the movable rod (904) is provided with a limiting hook (907) for placing the welding wire. The lower end of the movable rod (904) is provided with a second spring (906). The support block (905) for supporting the second spring (906) is fixed on the support rod (903).

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