Straight seam welding equipment for composite pipe in rigid beam structural form

Abstract

The utility model discloses composite pipe straight seam welding equipment in a rigid beam structural form, which comprises a rigid base, a cantilever beam, a welding gun mechanism, a roller carrier assembly, a cross beam anti-falling bracket, a grounding device and a control module, the welding gun mechanism, the roller carrier assembly and the grounding device are connected to the control module through circuits. An equipment main body adopts a rigid base and a rigid cantilever beam, and the structural main body is subjected to annealing destressing treatment after being welded and has enough rigidity and strength. A cantilever beam horizontal adjusting base plate is arranged at the left end of a cantilever beam mounting base, a cross beam anti-falling bracket device is designed, a bracket is driven by a connecting rod to move on a guide rail while a roller frame assembly conveys a workpiece, sagging of all positions of a cantilever beam can be compensated to a certain degree in the moving process of the bracket, and the stability of the cantilever beam is improved. And the relative consistency of the welding gun and the workpiece distance in the operation process is met.

Description

Technical Field

[0001] This utility model belongs to the technical field of surfacing equipment, and in particular relates to a composite pipe straight seam welding equipment with a rigid beam structure. Background Technology

[0002] In the pipeline industry, the inner wall of pipes needs to have good corrosion resistance and high-temperature resistance, while pipe fittings also need good rigidity. Pipes made of a single material cannot meet both requirements simultaneously. To meet these two requirements, large pipes are usually made of bimetallic composite plates to form straight seam welded pipes, and then straight seams are welded to the inner wall of the pipe. However, the straight seam welding process for large pipe fittings places high demands on the rigidity and straightness of the equipment. Common straight seam welding equipment cannot meet the concentricity requirements of large, long, straight pipes. Existing equipment cannot meet the rigidity and straightness requirements of large, long, straight pipe fittings. Because the straight seam welding path of long straight pipe fittings is relatively long, existing straight seam welding equipment has difficulty ensuring the relative consistency of the distance between the welding torch and the weld position on the workpiece during the welding process. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a composite pipe straight seam welding equipment with a rigid beam structure that can meet the requirements of straight seam welding of the inner wall of medium and large pipe fittings.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a composite pipe straight seam welding equipment with a rigid beam structure, comprising a rigid base, a cantilever beam, a welding torch mechanism, a roller frame assembly, a crossbeam anti-fall bracket, a grounding device, and a control module. The cantilever beam is fixedly installed on the right end of the rigid base. Two first linear slide rails and a transmission rack are also fixedly installed on the rigid base. Three roller frame assemblies are slidably installed on the first linear slide rails of the rigid base. One roller frame assembly located at the right end of the rigid base serves as the active roller frame, and the two roller frame assemblies located at the left end of the rigid base serve as the driven roller frames. The welding torch mechanism, the roller frame assembly, and the grounding device are respectively connected to the control module through circuits.

[0005] The welding torch mechanism consists of a carrier, a support frame, a wire feeder, an electric cross slide, a laser vision component, and a TIG welding torch. The carrier is fixedly installed on the left end of the cantilever beam, the support frame is fixedly installed on the carrier, the electric cross slide and the laser vision component are both fixedly installed on the support frame, the wire feeder is fixedly installed on the carrier, and the TIG welding torch is fixedly installed on the execution end of the electric cross slide.

[0006] The roller frame assembly comprises a first base plate, a first slider, a second linear slide rail, a first base, a third linear slide rail, a workpiece wheel bracket, a workpiece support wheel, a first transmission screw, a second transmission screw, a first drive motor, and a second drive motor. The first slider is fixedly mounted on the bottom surface of the first base plate and slidably mounted on the first linear slide rail. The second linear slide rail is fixedly mounted on the top surface of the first base plate. The first base is slidably mounted on the second linear slide rail. The two ends of the second transmission screw are rotatably mounted on the bottom surface of the first base. A second transmission block is fixedly mounted on the top surface of the first base plate, and the second transmission block is threadedly connected to the second transmission screw. The third linear slide rail... The first transmission screw is fixedly installed on the top of the first base. The first transmission screw is configured as a bidirectional screw structure, and both ends of the first transmission screw are rotatably installed on the top of the first base. The bottom of the workpiece wheel bracket is fixedly installed with a second slider. The two workpiece wheel brackets are slidably installed on the third linear slide rail through the second slider. The bottom of the two workpiece wheel brackets is fixedly installed with a first transmission block. The two ends of the first transmission block are respectively threadedly connected to the two ends of the first transmission screw. The first drive motor and the second drive motor are both fixedly installed on the right end of the first base. The output shafts of the first drive motor and the second drive motor are respectively connected to the first transmission screw and the second transmission screw. The workpiece support wheel is rotatably installed on the workpiece wheel bracket through a rotating shaft.

[0007] The active roller frame has a motor base fixedly mounted on its support seat. A third drive motor is fixedly mounted on the motor base. A transmission gear is fixedly mounted on the output shaft of the third drive motor. The transmission gear meshes with a transmission rack. A fourth drive motor is fixedly mounted on the outer ends of the two workpiece wheel supports of the active roller frame. The output shaft of the fourth drive motor is connected to the rotating shaft of the workpiece support wheel.

[0008] The crossbeam anti-fall bracket consists of a second base, a third slider, a hand-cranked lift, an anti-fall wheel bracket, an anti-fall support wheel, and a connecting rod. The third slider is fixedly installed at the bottom of the second base and is also slidably installed on a first linear slide rail. The hand-cranked lift is fixedly installed on the second base. The anti-fall wheel bracket is fixedly installed on the execution end of the hand-cranked lift. The anti-fall support wheel is rotatably installed on the anti-fall wheel bracket. A guide block is fixedly installed on the first base plate of the active roller frame. The right end of the connecting rod is fixedly installed on the second base, and the left end of the connecting rod is slidably installed in the guide block of the first base plate of the active roller frame. A limit stop is fixedly installed on the left end of the connecting rod to prevent it from falling out of the guide block.

[0009] The grounding device consists of a third base, a telescopic cylinder, and a grounding contact. The third base is fixedly installed on the first base, the cylinder body of the telescopic cylinder is fixedly installed on the third base, and the grounding contact is fixedly installed on the piston rod of the telescopic cylinder. The grounding contact is grounded through a lead wire.

[0010] Preferably, both the first drive motor and the second drive motor are configured as handwheel speed-regulating motors with handwheels.

[0011] Preferably, the support frame is fixedly mounted with a guide wheel bracket, and a guide wheel is fixedly mounted on the guide wheel bracket.

[0012] Preferably, a horizontal adjustment pad is fixedly installed on the right end of the rigid base, and the right end of the cantilever beam is fixedly installed on the horizontal adjustment pad.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] 1. The main body of the equipment adopts a rigid base and a rigid cantilever beam. The main structure is annealed to relieve stress, which gives it sufficient rigidity and strength and meets the rigidity and straightness requirements of the whole machine.

[0015] 2. A horizontal adjustment shim is installed at the cantilever beam installation position to raise the beam height, which compensates for the sag distance at the cantilever end in advance. This solves the problem of sag at the cantilever end caused by the excessive length of the cantilever beam and the lack of support at the cantilever end, ensuring that the rigidity and straightness of the cantilever beam meet the requirements.

[0016] 3. The design includes a crossbeam anti-fall bracket device. While transporting the workpiece, the roller frame assembly drives the bracket to move on the guide rail via a connecting rod. During the movement of the bracket, it can compensate for the sag of the cantilever beam at various positions to a certain extent, thus meeting the concentricity requirements of the workpiece during welding. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a 3D view of the active roller frame.

[0020] Figure 3 This is the front view of the active roller frame.

[0021] Figure 4 This is a three-dimensional view of the driven roller frame.

[0022] Figure 5 It is a 3D diagram of the welding torch mechanism.

[0023] Figure 6 This is a 3D diagram of the crossbeam anti-fall bracket. Detailed Implementation

[0024] The present invention will now be described in detail with reference to specific embodiments:

[0025] like Figures 1 to 6 The composite pipe straight seam welding equipment with a rigid beam structure shown includes a rigid base 1, a cantilever beam 3, a welding torch mechanism 4, a roller frame assembly 6, a crossbeam anti-fall bracket 7, a grounding device 8, and a control module. Due to the concentricity requirement, the mechanism adopts a rigid base 1 structure. The rigid base 1 is welded and then annealed to relieve stress, thus having sufficient rigidity and strength to meet the requirements of the whole machine. The cantilever beam 3 is fixedly installed on the right end of the rigid base 1. Two first linear slide rails 11 and a transmission rack 12 are also fixedly installed on the rigid base 1. Three roller frame assemblies 6 are slidably installed on the first linear slide rails 11 of the rigid base 1. One roller frame assembly 6 located at the right end of the rigid base 1 serves as the active roller frame, and the two roller frame assemblies 6 located at the left end of the rigid base 1 serve as the driven roller frames. The welding torch mechanism 4, the roller frame assembly 6, and the grounding device 8 are respectively connected to the control module through circuits.

[0026] The welding torch mechanism 4 consists of a bearing base 41, a support frame 42, a wire feeder 43, an electric cross slide 44, a laser vision component 45, and a TIG welding torch 46. The bearing base 41 is fixedly installed on the left end of the cantilever beam 3, the support frame 42 is fixedly installed on the bearing base 41, the electric cross slide 44 and the laser vision component 45 are both fixedly installed on the support frame 42, the wire feeder 43 is fixedly installed on the bearing base 41, and the TIG welding torch 46 is fixedly installed on the execution end of the electric cross slide 44. Due to the welding requirements of the weld seam inside the workpiece, a laser vision and video monitoring device has been added. The automation level of the equipment has been greatly improved, reducing the labor intensity of workers. At the same time, the use of video monitoring allows workers to observe the weld seam formation effect at any time and to manually intervene in the equipment when necessary.

[0027] The roller frame assembly 6 comprises a first base plate 60, a first slider 610, a second linear slide rail 61, a first base 62, a third linear slide rail 63, a second slider, a workpiece wheel bracket 65, a workpiece support wheel 66, a first transmission screw 68, a second transmission screw, a first drive motor 69, and a second drive motor 690. The first slider 610 is fixedly mounted on the bottom surface of the first base plate 60 and slidably mounted on the first linear slide rail 11. The second linear slide rail 61 is fixedly mounted on the top surface of the first base plate 60. The first base 62 is slidably mounted on the second linear slide rail 61. The two ends of the second transmission screw are rotatably mounted on the bottom surface of the first base 62. A second transmission block is fixedly mounted on the top surface of the first base plate 60, and the second transmission block is threadedly connected to the second transmission screw. The third linear slide rail 69... The rail 63 is fixedly installed on the top of the first base 62. The first transmission screw 68 is configured as a bidirectional screw structure. Both ends of the first transmission screw 68 are rotatably installed on the top of the first base 62. The bottom of the workpiece wheel bracket 65 is fixedly installed with a second slider 64. The two workpiece wheel brackets 65 are slidably installed on the third linear slide rail 63 through the second slider 64. The bottom of the two workpiece wheel brackets 65 is fixedly installed with a first transmission block. The two ends of the first transmission block are respectively threadedly connected to the two ends of the first transmission screw 68. The first drive motor 69 and the second drive motor 690 are both fixedly installed on the right end of the first base 62. The output shafts of the first drive motor 69 and the second drive motor 690 are respectively connected to the first transmission screw 68 and the second transmission screw. The workpiece support wheel 66 is rotatably installed on the workpiece wheel bracket 65 through a rotating shaft.

[0028] The active roller frame has a motor base 51 fixedly mounted on its support base 41. A third drive motor 5 is fixedly mounted on the motor base 51, and a transmission gear 52 is fixedly mounted on the output shaft of the third drive motor 5. The transmission gear 52 meshes with a transmission rack 12 for transmission. A fourth drive motor 611 is fixedly mounted on the outer ends of the two workpiece wheel supports 65 of the active roller frame. The output shaft of the fourth drive motor 611 is connected to the rotating shaft of the workpiece support wheel 66 for transmission. The active roller frame is driven to move by the third drive motor 5, which has a reduction function, driving the transmission gear 52 to rotate. The transmission gear 52 meshes with the transmission rack 12 on the rigid base to drive the active roller frame to move. Both the active and driven roller frames can be adjusted slightly in the height direction to solve the problem of the welding torch movement trajectory not coinciding with the weld seam of the workpiece. Adjusting the relative position of the height of each roller frame can make the weld seam coincide with the welding torch trajectory, which is convenient for welding.

[0029] The crossbeam anti-fall bracket 7 consists of a second base 71, a third slider 72, a hand-cranked lift 73, an anti-fall wheel bracket 74, an anti-fall support wheel 75, and a connecting rod 76. The third slider 72 is fixedly installed at the bottom of the second base 71 and is also slidably installed on the first linear slide rail 11. The hand-cranked lift 73 is fixedly installed on the second base 71, and the actuator of the hand-cranked lift 73 is in a non-rotating state when moving up and down. The anti-fall wheel bracket 74 is fixedly installed on the actuator end of the hand-cranked lift 73, and the anti-fall support wheel 75 is rotatably installed on the anti-fall wheel bracket 74. A guide block is fixedly installed on the first base plate 60 of the active roller frame. The right end of the connecting rod 76 is fixedly installed on the second base 71, and the left end of the connecting rod 76 is slidably installed in the guide block of the first base plate 60 of the active roller frame. A limit stop 77 is fixedly installed on the left end of the connecting rod 76 to prevent it from falling out of the guide block. The crossbeam anti-fall bracket 7 supports the cantilever beam 3 via its anti-fall support wheel 75, preventing excessive sagging of the cantilever beam 3 from affecting welding. The connecting rod limit block is bolted to the active roller frame. The position of the block on the connecting rod can be adjusted according to usage requirements. Under the action of the limit block 77, the anti-fall support wheel 75 and the active roller frame are always in a relatively reasonable position. Both the workpiece support wheel 66 and the anti-fall support wheel 75 are insulated wheels.

[0030] The grounding device 8 consists of a third base 8, a telescopic cylinder 81, and a grounding contact 822. The third base 8 is fixedly mounted on the first base 62, the cylinder body of the telescopic cylinder 81 is fixedly mounted on the third base 8, and the grounding contact 822 is fixedly mounted on the piston rod of the telescopic cylinder 81. The grounding contact 822 is grounded via a lead wire. The grounding device 8 adopts a liftable structure to prevent damage to the grounding component during workpiece clamping. The device is driven by a cylinder to lift and lower to contact or detach from the workpiece. Lowering the grounding component when clamping or adjusting the workpiece height can prevent damage; raising the grounding component during welding ensures stable and reliable grounding.

[0031] Both the first drive motor 69 and the second drive motor 690 are configured as handwheel speed-regulating motors with a handwheel 691, which allows for fine adjustment of the rotation angle of the output shafts of the first drive motor 69 and the second drive motor 690.

[0032] The support frame 42 is fixedly mounted with a guide wheel bracket 47, and a guide wheel 48 is fixedly mounted on the guide wheel bracket 47 to prevent the TIG welding torch 46 from deviating from the preset weld seam trajectory.

[0033] A horizontal adjustment pad 2 is fixedly installed on the right end of the rigid base 1, and the right end of the cantilever beam 3 is fixedly installed on the horizontal adjustment pad 2 to compensate for the sag at the end of the cantilever beam 3.

[0034] The first drive motor 69, the second drive motor 690, the third drive motor 5, and the fourth drive motor 611 are all asynchronous motors with reduction function. During welding: First, the workpiece to be welded is placed on the workpiece support wheel 66 of the roller frame assembly 6. The fourth drive motor 611 on the active roller frame drives its workpiece support wheel 66 to rotate, thereby adjusting the angle of the long straight composite pipe workpiece. Then, the workpiece is fixed on the roller frame assembly to prevent it from falling during welding. Afterward, the third drive motor 5 of the active roller frame is started to drive the transmission gear to rotate, thereby moving the workpiece to the right end of the cantilever beam 3. At this time, the TIG welding torch 46 does not perform welding operations. The cantilever beam 3 and the welding torch mechanism 4 enter the inner wall of the long straight pipe. The laser vision component 45 scans and analyzes the welding path of the workpiece and feeds it back to the control module. After the path scanning and analysis is completed, the workpiece started by the third drive motor 5 of the active roller frame returns to the original position where the workpiece began welding. The third drive motor 5 of the active roller frame starts, moving the workpiece towards the right end of the cantilever beam 3. The control module calls the workpiece welding path fed back by the laser vision component 45. With the cooperation of laser tracking and arc voltage tracking, the TIG welding torch 46 performs the first layer of straight seam welding on the inner wall of the workpiece. After the first layer of straight seam welding is completed, the active roller frame moves the workpiece back to the welding start position. The control module calls the secondary welding path, and the welding torch performs the second layer of straight seam welding on the inner wall of the workpiece. After welding is completed, the active roller frame brings the workpiece back to the loading and unloading position. During the welding process, the driven roller frame moves synchronously under the drive of the active roller frame.

Claims

1. A composite pipe straight seam welding device with a rigid beam structure, characterized in that: The system includes a rigid base (1), a cantilever beam (3), a welding torch mechanism (4), a roller frame assembly (6), a crossbeam anti-fall bracket (7), a grounding device (8), and a control module. The cantilever beam (3) is fixedly installed on the right end of the rigid base (1). Two first linear slide rails (11) and a transmission rack (12) are also fixedly installed on the rigid base (1). Three roller frame assemblies (6) are slidably installed on the first linear slide rails (11) of the rigid base (1). One roller frame assembly (6) located at the right end of the rigid base (1) serves as the active roller frame, and the two roller frame assemblies (6) located at the left end of the rigid base (1) serve as the driven roller frames. The welding torch mechanism (4), the roller frame assembly (6), and the grounding device (8) are respectively connected to the control module through circuits. The welding torch mechanism (4) consists of a bearing seat (41), a support frame (42), a wire feeder (43), an electric cross slide (44), a laser vision component (45), and a TIG welding torch (46). The bearing seat (41) is fixedly installed on the left end of the cantilever beam (3). The support frame (42) is fixedly installed on the bearing seat (41). The electric cross slide (44) and the laser vision component (45) are both fixedly installed on the support frame (42). The wire feeder (43) is fixedly installed on the bearing seat (41). The TIG welding torch (46) is fixedly installed on the execution end of the electric cross slide (44). The roller frame assembly (6) consists of a first base plate (60), a first slider (610), a second linear slide rail (61), a first base (62), a third linear slide rail (63), a second slider, a workpiece wheel bracket (65), a workpiece support wheel (66), a first transmission screw (68), a second transmission screw, a first drive motor (69), and a second drive motor (690). The first slider (610) is fixedly mounted on the bottom surface of the first base plate (60) and slidably mounted on the first linear slide rail (11). The second linear slide rail (61) is fixedly mounted on the top surface of the first base plate (60). The first base (62) is slidably mounted on the second linear slide rail (61). The two ends of the second transmission screw are rotatably mounted on the bottom surface of the first base (62). A second transmission block is fixedly mounted on the top surface of the first base plate (60). The second transmission block is threadedly connected to the second transmission screw. The third linear slide rail (69) is mounted on the second linear slide rail (610). The slide rail (63) is fixedly installed on the top of the first base (62). The first transmission screw (68) is configured as a two-way screw structure. The two ends of the first transmission screw (68) are rotatably installed on the top of the first base (62). The bottom of the workpiece wheel bracket (65) is fixedly installed with a second slider (64). The two workpiece wheel brackets (65) are slidably installed on the third linear slide rail (63) through the second slider (64). The bottom of the two workpiece wheel brackets (65) is fixedly installed with a first transmission block. The two ends of the first transmission block are respectively threadedly connected to the two ends of the first transmission screw (68). The first drive motor (69) and the second drive motor (690) are both fixedly installed on the right end of the first base (62). The output shafts of the first drive motor (69) and the second drive motor (690) are respectively connected to the first transmission screw (68) and the second transmission screw. The workpiece support wheel (66) is rotatably installed on the workpiece wheel bracket (65) through a rotating shaft. The active roller frame has a motor base (51) fixedly installed on its support seat (41), a third drive motor (5) fixedly installed on the motor base (51), a transmission gear (52) fixedly installed on the output shaft of the third drive motor (5), the transmission gear (52) meshes with the transmission rack (12) for transmission, and a fourth drive motor (611) is fixedly installed on the outer end of the two workpiece wheel supports (65) of the active roller frame, the output shaft of the fourth drive motor (611) is connected to the rotating shaft of the workpiece support wheel (66) for transmission. The crossbeam anti-fall bracket (7) consists of a second base (71), a third slider (72), a hand-cranked lift (73), an anti-fall wheel bracket (74), an anti-fall support wheel (75), and a connecting rod (76). The third slider (72) is fixedly installed at the bottom of the second base (71). The third slider (72) is also slidably installed on the first linear slide rail (11). The hand-cranked lift (73) is fixedly installed on the second base (71). The anti-fall wheel bracket (74) is fixedly installed on the second base (71). Mounted on the actuator of the hand-cranked lift (73), the anti-fall support wheel (75) is rotatably mounted on the anti-fall wheel bracket (74), the first base plate (60) of the active roller frame is fixedly mounted with a guide block, the right end of the connecting rod (76) is fixedly mounted on the second base (71), the left end of the connecting rod (76) is slidably mounted in the guide block of the first base plate (60) of the active roller frame, and the left end of the connecting rod (76) is fixedly mounted with a limiting stop (77) to prevent it from falling out of the guide block. The grounding device (8) consists of a third base (80), a telescopic cylinder (81), and a grounding contact (82). The third base (80) is fixedly installed on the first base (62). The cylinder body of the telescopic cylinder (81) is fixedly installed on the third base (80). The grounding contact (82) is fixedly installed on the piston rod of the telescopic cylinder (81). The grounding contact (82) is grounded through a lead wire.

2. The composite pipe straight seam welding equipment with a rigid beam structure according to claim 1, characterized in that: Both the first drive motor (69) and the second drive motor (690) are configured as handwheel speed-regulating motors with a handwheel (691).

3. The composite pipe straight seam welding equipment with a rigid beam structure according to claim 1, characterized in that: The support frame (42) is fixedly mounted with a guide wheel bracket (47), and a guide wheel (48) is fixedly mounted on the guide wheel bracket (47).

4. The composite pipe straight seam welding equipment with a rigid beam structure according to claim 1, characterized in that: The right end of the rigid base (1) is fixedly installed with a horizontal adjustment pad (2), and the right end of the cantilever beam (3) is fixedly installed on the horizontal adjustment pad (2).

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