Welding equipment and welding method for internal welding of long and narrow pipe cavity

Abstract

The invention discloses welding equipment and a welding method for welding the interior of a long and narrow pipe cavity, the welding equipment comprises a rack, a translation assembly, a lengthening rod and a welding machine assembly, the translation assembly is arranged on the rack, and the lengthening rod is horizontally arranged on the translation assembly and translates front and back along with the translation assembly; the welding machine assembly comprises a welding machine, a wire feeder and a welding gun, the welding machine is arranged on the rack, the wire feeder is arranged on the translation assembly, and the welding gun is arranged at the outer end of the lengthening rod and connected with the welding machine and the wire feeder. According to the welding equipment, the lengthening rod is arranged to adapt to a long and narrow pipe cavity, welding of a welding seam in the pipe cavity is achieved, meanwhile, the stability and continuity of the welding process are guaranteed through the translation assembly, meanwhile, the welding angle is adjusted through the rotating support, it is guaranteed that the welding gun and the welding seam are accurately aligned, and then the welding quality is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and particularly relates to a welding equipment and a welding method for welding inside a long and narrow pipe cavity. Background Art

[0002] The radiators of adiabatic coolers are mostly finned tube radiators. The production steps of finned tube radiators include assembling fins and heat dissipation tubes into heat dissipation units, and then combining and welding the heat dissipation units to form the overall radiator. When assembling the heat dissipation units, first set a tube sheet at its end face, and then weld the U-shaped tube box with the opening facing inwards on the tube sheet. When welding, all seams between the tube box and the tube sheet need to be welded. The seams outside the tube box can be welded manually by workers, but the welding inside the tube box is more difficult. And because the inner cavity of the tube box is relatively long and narrow, traditional welding methods cannot achieve inner seam welding, and the quality and efficiency during welding cannot be guaranteed, resulting in defects such as long time, high cost and poor quality in the welding operation of the tube box. The present invention provides a welding equipment and a welding method for welding inside a long and narrow pipe cavity to solve the above problems. Summary of the Invention

[0003] The present invention provides a welding equipment and a welding method for welding inside a long and narrow pipe cavity, which are used for welding the inner seams of a long and narrow pipe cavity, and have good welding quality and high efficiency.

[0004] The technical solutions adopted by the present invention to solve the above technical problems are as follows: A welding equipment for welding inside a long and narrow pipe cavity includes a frame, a translation assembly, an extension rod and a welding machine assembly. The translation assembly is arranged on the frame. The extension rod is horizontally arranged on the translation assembly and moves back and forth together with the translation assembly. The welding machine assembly includes a welding machine, a wire feeder and a welding torch. The welding machine is arranged on the frame. The wire feeder is arranged on the translation assembly. The welding torch is arranged at the outer end of the extension rod and is connected to the welding machine and the wire feeder.

[0005] Further, the translation assembly includes a translation slide and a rotating support. The translation slide is movably arranged on the frame and moves back and forth on the frame. The rotating support is fixedly arranged on the translation slide. The rear end of the extension rod is arranged on the translation slide and moves back and forth together with the translation slide. The rotating support is connected to the extension rod and drives the extension rod to rotate around its own axis.

[0006] Further, the translation assembly further includes a limit support. The limit support is fixedly arranged at the front end of the frame. The rod body of the extension rod is placed on the limit support.

[0007] Further, the frame includes lifting leg assemblies, a workbench, and a sliding seat. The workbench is disposed on the lifting leg assemblies, the sliding seat is arranged on the workbench, and the translation slide is movably disposed on the sliding seat.

[0008] Further, the lifting leg assemblies include a chassis, a lift, a linkage rod, and a first power device. The lift is arranged on the chassis, the workbench is disposed at the top of the lift, the linkage rod is horizontally arranged on the chassis, the linkage rod is connected to the lift and drives the lift to move in a linkage manner, and the first power device is connected to the lift.

[0009] Further, the rotary support includes a collar and a driver. The collar is sleeved on the extension rod, and the driver is arranged on the translation slide and connected to the collar.

[0010] Further, the extension rod is a hollow tube, and the welding wire of the wire feeder passes through the extension rod and extends to the welding torch.

[0011] Further, a second power device is arranged on the translation slide, and the second power device drives the translation slide to move on the sliding seat.

[0012] Further, a control box is also provided, and the control box is electrically connected to the welding machine assembly, the lifting leg assemblies, the translation slide, and the rotary support.

[0013] A welding method for a welding device used for welding the interior of a narrow and long tube cavity includes the following steps. S1. Equipment adjustment: Control the translation slide to reset, and control the lifting leg assemblies to act to adjust the height of the equipment. S2. Welding preparation: Align the welding torch with the front end of the weld, move the welding device so that the extension rod is parallel to the weld, and adjust the angle of the extension rod to adjust the welding angle of the welding torch. S3. Welding operation: Start the welding machine and the wire feeder, control the translation slide to move forward uniformly along the sliding seat, feed the welding torch into the narrow and long tube cavity through the extension rod, and weld the inner angle. S4. Repeated operation: After the first inner angle weld is completed, stop the machine and reset. Adjust the welding torch according to the operation in step S2 so that it is aligned with the second inner angle weld, and then weld the second inner angle weld according to the operation in step S3. After the welding is completed, stop the machine and reset.

[0014] The beneficial effects of the present invention are as follows: The welding device adapts to the narrow and long tube cavity by setting the extension rod to realize the welding of the inner weld of the tube cavity. At the same time, the translation assembly is used to ensure the smoothness and continuity of the welding process. At the same time, the welding angle is adjusted by the rotary support to ensure the precise alignment of the welding torch and the weld, thereby effectively ensuring the welding quality. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the schematic diagram of the state where the welding torch extends out of the present invention; Figure 3 is the structural schematic diagram of the translation assembly of the present invention; Figure 4 is the schematic diagram of the state where the rear end of the extension rod is fixed of the present invention; Figure 5 is the schematic diagram of the state where the welding torch is arranged of the present invention; Figure 6 is the structural schematic diagram of the frame of the present invention.

[0016] Reference numerals: 1, frame; 11, lifting leg assembly; 111, chassis; 112, lift; 113, linkage rod; 114, power device I; 12, workbench; 13, sliding seat; 2, translation assembly; 21, translation slide; 22, rotary support; 23, limit support; 3, extension rod; 4, welding machine; 5, wire feeder; 6, welding torch. Detailed implementation manners

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0019] Such as Figure 1 、 2As shown in the figure, a welding device for welding inside a narrow lumen includes a frame 1, a translation assembly 2, an extension rod 3, and a welding machine assembly. The translation assembly 2 is arranged on the frame 1. The extension rod 3 is horizontally arranged on the translation assembly 2 and moves back and forth together with the translation assembly 2. The axis of the extension rod 3 is the same as the translation direction of the translation assembly 2. The welding machine assembly includes a welding machine 4, a wire feeder 5, and a welding torch 6. The welding machine 4 is arranged on the frame 1. The wire feeder 5 is arranged on the translation assembly 2 and moves together with the translation assembly 2. The welding torch 6 is arranged at the outer end of the extension rod 3 and is connected to the welding machine 4 and the wire feeder 5.

[0020] As Figure 1 , 2 shown, the welding device of the present invention is used to weld the weld in the narrow lumen. Since the space in the narrow lumen is extremely small, a conventional welding torch cannot extend into the lumen. Even if a welding torch can extend into the lumen, it cannot ensure the smoothness and continuity of the welding process. Therefore, it is impossible to ensure that the weld quality meets the requirements. The present invention sends the welding torch 6 into the narrow lumen through the cooperation of the translation assembly 2 and the extension rod 3, and realizes the smoothness, uniformity, and continuity of the feeding process through the translation assembly 2, thereby ensuring the quality of the weld. The operating principle of the present invention is to set the welding torch 6 at the outer end of the extension rod 3, set the extension rod 3 on the translation slide 21, and the translation slide 21 is arranged on the slide seat 13 on the workbench 12. During welding, the translation slide 21 translates on the slide seat 13, and then smoothly sends the extension rod 3 and the welding torch 6 thereon into the lumen for welding operations.

[0021] As Figure 1 , 2 , 3, 4 shown, further, the translation assembly 2 includes a translation slide 21 and a rotary support 22. The translation slide 21 is movably arranged on the slide seat 13 of the frame 1 and moves back and forth on the slide seat 13. The rear end of the extension rod 3 is arranged on the translation slide 21 and moves back and forth together with the translation slide 21. The rotary support 22 is fixedly arranged on the translation slide 21. The rear end of the extension rod 3 is connected to the translation slide 21 through a bearing and a bearing seat, and the rear part of the extension rod 3 is connected to the rotary support 22. Under the drive of the rotary support 22, the extension rod 3 rotates around its own axis.

[0022] As Figure 3 , 4 shown, further, due to the arrangement of the pipeline, the rotation range of the extension rod 3 around the axis is small, and the total left-right swing range is not greater than 120°. The rotary support 22 is set to adjust the left and right orientation of the extension rod 3, so as to change the angle of the welding torch 6 at the end of the extension rod 3. The rotary support 22 includes a collar and a driver. The collar is sleeved on the extension rod 3. The driver is arranged on the translation slide 21 and is connected to the collar.

[0023] AsFigure 3 , 4 As shown, preferably, the driver is a motor and a worm gear arranged on the output end of the motor, the worm gear is arranged perpendicular to the extension rod 3 and is located below the extension rod 3, the ring is sleeved on the extension rod 3, the outer side of the ring is provided with gear teeth and meshes with the worm gear to form a worm gear structure, driven by the motor, the ring is driven to swing left and right by the forward and reverse rotation of the worm gear, the offset angle of the extension rod 3 is adjusted, and then the direction of the welding gun 6 at the front end of the extension rod 3 is adjusted, so that the welding gun 6 can adapt to the direction of the weld.

[0024] like Figure 1 , 2 As shown in Figure 6, further, the translation assembly 2 also includes a limit support 23, which is fixedly arranged at the front end of the frame 1 to support the extension rod 3 so that the extension rod 3 remains horizontal and ensures the stability of the extension rod 3 when the extension rod 3 is translated. The rod body of the extension rod 3 is placed on the limit support 23.

[0025] like Figure 6 As shown, further, the limiting support 23 includes a base and a track wheel. The base is fixedly arranged on the workbench 12, and the track wheel is movably arranged on the base. The track wheel facilitates the translation of the extension rod 3, and when the extension rod 3 is rotated and offset, the track wheel also plays a limiting role.

[0026] like Figure 1 , 2 6, further, the frame 1 includes a lifting leg assembly 11, a workbench 12 and a slide 13, the workbench 12 is arranged on the lifting leg assembly 11, the lifting leg assembly 11 is used to adjust the height of the workbench 12 so that the height of the welding gun 6 is consistent with the height of the weld, the slide 13 is arranged on the workbench 12, and the translation slide 21 is movably arranged on the slide 13 and can translate back and forth along the slide 13.

[0027] like Figure 1 , 2 6, further, the lifting leg assembly 11 includes a base frame 111, an elevator 112, a linkage rod 113 and a power device 114, the elevators 112 are arranged in pairs on the base frame 111, the workbench 12 is arranged at the top of the elevator 112, the linkage rod 113 is horizontally arranged on the base frame 111, the linkage rod 113 is connected to the elevator 112, the front and rear elevators 112 are connected as a whole, and the two elevators 112 are driven to be linked, and the workbench 12 is controlled to be lifted and lowered, and the power device 114 is connected to the rear elevator 112 to drive the rear elevator 112 to move.

[0028] Furthermore, a self-locking universal wheel is provided at the bottom of the base frame 111 for moving the device and adjusting the orientation of the device.

[0029] Furthermore, the elevator 112 is a worm gear screw elevator, the rear elevator 112 is directly connected to the power device 114, and the front and rear elevators 112 are connected by a linkage rod 113. When the rear elevator 112 moves, the front elevator 112 is driven by the linkage rod 113 to move synchronously.

[0030] Furthermore, the extension rod 3 is a hollow round tube, and the welding wire of the wire feeder 5 passes through the extension rod 3 and extends to the welding gun 6.

[0031] Furthermore, a second power device is provided on the translation slide 21 to drive the translation slide 21 to move forward and backward on the slide seat 13 .

[0032] Furthermore, a control box is provided, which is electrically connected to the welding machine assembly, the lifting leg assembly 11, the translation slide 21 and the rotating support 22, and respectively controls the start and stop of the welding machine assembly, controls the lifting and lowering of the lifting leg assembly 11, controls the forward and backward translation of the translation slide 21, and controls the left and right swing of the rotating support 22.

[0033] like Figure 1 , 2 As shown, a welding method of a welding device for welding inside a narrow and long tube cavity comprises the following steps: S1, equipment adjustment: control the translation slide 21 to reset, control the lifting leg assembly 11 to adjust the height of the equipment, ensure that the equipment is in a horizontal state, and make the height of the welding gun 6 the same as the height of the weld; S2, welding preparation: after the height is adjusted appropriately, align the welding gun 6 with the front end of the weld, manually move the welding device so that the extension rod 3 is parallel to the weld, that is, keep the axis of the extension rod 3 parallel to the weld, lock the welding device to prevent the welding device from shifting, and then adjust the welding angle of the welding gun 6 by adjusting the angle of the extension rod 3, that is, adjust the direction of the welding gun 6 to align it with the weld; S3, welding operation: start the welding machine 4 and the wire feeder 5, control the translation slide 21 to move forward at a constant speed along the slide seat 13, drive the extension rod 3 and the welding gun 6 thereon to move, send the welding gun 6 into the narrow and long tube cavity, and weld the inner angle; S4, repeat the operation: after the welding of the first inner fillet weld is completed, stop and reset the machine, adjust the position and angle of the welding gun 6 according to the operation of step S2 so that it is aligned with the second inner fillet weld, and then weld the second inner fillet weld according to the operation of step S3, and stop and reset the machine after welding is completed.

[0034] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention, and any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A welding device for internal welding of a long and narrow lumen, characterized in that: It includes a frame (1), a translation assembly (2), an extension rod (3) and a welding machine assembly. The translation assembly (2) is arranged on the frame (1). The extension rod (3) is horizontally arranged on the translation assembly (2) and moves back and forth together with the translation assembly (2). The welding machine assembly includes a welding machine (4), a wire feeder (5) and a welding torch (6). The welding machine (4) is arranged on the frame (1). The wire feeder (5) is arranged on the translation assembly (2). The welding torch (6) is arranged at the outer end of the extension rod (3) and is connected to the welding machine (4) and the wire feeder (5).

2. The welding device for internal welding of long and narrow lumens according to claim 1, characterized in that: The translation assembly (2) includes a translation slide (21) and a rotating support (22). The translation slide (21) is movably arranged on the frame (1) and moves back and forth on the frame (1). The rotating support (22) is fixedly arranged on the translation slide (21). The rear end of the extension rod (3) is arranged on the translation slide (21) and moves back and forth together with the translation slide (21). The rotating support (22) is connected to the extension rod (3) and drives the extension rod (3) to rotate around its own axis.

3. The welding device for internal welding of a narrow lumen according to claim 2, characterized in that: The translation assembly (2) further includes a limit support (23). The limit support (23) is fixedly arranged at the front end of the frame (1). The rod body of the extension rod (3) is placed on the limit support (23).

4. A welding device for internal welding of a narrow lumen according to claim 2, characterized in that: The frame (1) includes a lifting leg assembly (11), a workbench (12) and a sliding seat (13). The workbench (12) is arranged on the lifting leg assembly (11). The sliding seat (13) is arranged on the workbench (12). The translation slide (21) is movably arranged on the sliding seat (13).

5. The welding device for internal welding of a narrow lumen according to claim 4, characterized in that: The lifting leg assembly (11) includes a chassis (111), a lift (112), a linkage rod (113) and a power device one (114). The lift (112) is arranged on the chassis (111). The workbench (12) is arranged at the top of the lift (112). The linkage rod (113) is horizontally arranged on the chassis (111). The linkage rod (113) is connected to the lift (112) and drives the lift (112) to move in linkage. The power device one (114) is connected to the lift (112).

6. A welding device for internal welding of a long and narrow lumen according to claim 2, characterized in that: The rotating support (22) includes a collar and a driver. The collar is sleeved on the extension rod (3). The driver is arranged on the translation slide (21) and is connected to the collar.

7. A welding device for internal welding of a long and narrow lumen according to claim 1, characterized in that: The extension rod (3) is a hollow tube. The welding wire of the wire feeder (5) passes through the extension rod (3) and extends to the welding torch (6).

8. A welding device for internal welding of a long and narrow lumen according to claim 4, characterized in that: A power device two is arranged on the translation slide (21). The power device two drives the translation slide (21) to move on the sliding seat (13).

9. The welding device for internal welding of a long and narrow lumen according to claim 1, characterized in that: A control box is also provided. The control box is electrically connected to the welding machine assembly, the lifting leg assembly (11), the translation slide (21) and the rotating support (22).

10. A welding method for a welding device used for internal welding of a long and narrow lumen, characterized in that, It includes the following steps, S1, Equipment adjustment: Control the translation slide (21) to reset, and control the lifting leg assembly (11) to act to adjust the height of the equipment; S2. Welding preparation: Align the welding torch (6) with the front end of the weld seam, move the welding equipment to make the extension rod (3) parallel to the weld seam, and adjust the angle of the extension rod (3) to adjust the welding angle of the welding torch (6); S3. Welding operation: Start the welding machine (4) and the wire feeder (5), control the translation slide (21) to move forward uniformly along the slide base (13), and feed the welding torch (6) into the narrow pipe cavity through the extension rod (3) to weld the inner angle; S4. Repeated operation: After the first inner angle weld seam is welded, stop the machine and reset it. Adjust the welding torch (6) according to the operation in step S2 to align it with the second inner angle weld seam, and then weld the second inner angle weld seam according to the operation in step S3. After welding, stop the machine and reset it.

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