Automatic efficient welding device for inner wall of pipe

Abstract

The utility model belongs to the technical field of welding, and particularly relates to a pipe inner wall automatic efficient welding device which comprises a base, a sliding rod is arranged on the base, a sliding block is arranged on the sliding rod, a first hydraulic cylinder and a second hydraulic cylinder are arranged on the outer side wall of the sliding block, and the end of an output shaft of the first hydraulic cylinder is arranged on a first support. A first roller is rotationally arranged on the first support, a first rubber sleeve wraps the outer circumference of the first roller, and the tangential direction of a contact point after the first roller is in contact with the sliding rod is parallel to the axis of the sliding rod; an output shaft of the second hydraulic cylinder is arranged on a second support, a second roller is rotationally arranged on the second support, the outer circumference of the second roller is wrapped with a second rubber sleeve, and the tangential direction of a contact point after the second roller makes contact with the sliding rod is perpendicular to the axis of the sliding rod; a plurality of swing arms are distributed on the outer side wall of the sliding block, and welding guns are arranged on the swing arms. The sliding block is fed into the structure, and operation is convenient; and the multiple welding guns are arranged on the sliding block, multiple welding seams are welded at the same time, and the welding efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding, and in particular relates to an automatic and efficient welding device for the inner wall of a pipe. Background Art

[0002] The muffler unit is usually fixed using C-shaped blocks. During the processing of the C-shaped blocks, multiple plates are usually welded together to form a square tube with a notch (i.e., the shape of the C-shaped block) and fixed. To avoid affecting the appearance of the C-shaped block, the welds are usually welded on the inside of the C-shaped block. The inside of the spliced C-shaped block has multiple welds, which is extremely inconvenient to weld. Each weld is welded separately, resulting in low welding efficiency, slow speed, long construction period, and high labor costs. In addition, in the prior art, there are also some other internal structures that need to be welded. There are many internal welds, which makes manual operation inconvenient and low welding efficiency. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an automatic and efficient pipe inner wall welding device.

[0004] The purpose of the present invention is to be achieved by adopting the following technical solutions. According to the present invention, an automatic and efficient welding device for the inner wall of a pipe is proposed, comprising a base, a sliding rod is provided on the base, a slider is provided on the sliding rod, a first hydraulic cylinder and a second hydraulic cylinder are provided on the outer wall of the slider, the output shaft of the first hydraulic cylinder is passed through the first through hole of the slider, a first groove is provided on the arc surface of the slider facing the sliding rod, the first through hole is connected to the first groove, a first bracket is provided in the first groove, the end of the output shaft of the first hydraulic cylinder is provided on the first bracket, the extension line of the moving track of the output shaft of the first hydraulic cylinder is perpendicular to the axis of the sliding rod; a first roller is rotatably provided on the first bracket, a first motor is fixedly provided on the first bracket, the output shaft of the first motor is connected to the rotating shaft of the first roller; a first rubber sleeve is provided to wrap around the outer circumference of the first roller, and the tangent direction of the contact point after the first roller contacts the sliding rod is parallel to the axis of the sliding rod;

[0005] The output shaft of the second hydraulic cylinder is inserted into the second through-hole of the slider. The surface of the slider facing the slide bar is provided with a second groove, the second through-hole being connected to the second groove. A second bracket is disposed in the second groove. The end of the output shaft of the second hydraulic cylinder is mounted on the second bracket. The extended line of the moving trajectory of the output shaft of the second hydraulic cylinder is perpendicular to the axis of the slide bar. A second roller is rotatably mounted on the second bracket. A second motor is fixedly mounted on the second bracket. The output shaft of the second motor is connected to the rotating shaft of the second roller. A second rubber sleeve is wrapped around the outer circumference of the second roller. The tangent direction of the contact point between the second roller and the slide bar is perpendicular to the axis of the slide bar.

[0006] A plurality of swing arms are distributed on the outer side wall of the sliding block, and welding guns are arranged on the swing arms.

[0007] Furthermore, two first hydraulic cylinders and two second hydraulic cylinders are symmetrically arranged on the outer side wall of the slider, the output shaft extension trajectory lines of the two first hydraulic cylinders coincide with each other, the output shaft extension trajectory lines of the two second hydraulic cylinders coincide with each other, and the output shaft extension trajectory line of the first hydraulic cylinder is perpendicular to the output shaft extension trajectory line of the second hydraulic cylinder.

[0008] Furthermore, the swing plane where the swing arm is located is perpendicular to the slide rod.

[0009] Furthermore, the outer wall of the slider is provided with a third groove for installing the swing arm, the inner wall of the third groove is fixedly provided with a rotating shaft, the end of the swing arm is rotatably sleeved on the rotating shaft, and a locking bolt is threadedly connected to the slider. The locking bolt passes through the outer wall of the slider to the inner wall of the third groove and can be pressed against the end of the swing arm close to the rotating shaft.

[0010] Furthermore, a long hole extending along the length of the swing arm is provided on the swing arm, and the welding gun is fixed to the swing arm by an adjusting bolt group.

[0011] Furthermore, a swing motor is provided on the outer side wall of the slider, and a swing arm is provided on the output shaft of the swing motor.

[0012] Furthermore, a linear motor is provided on the swing arm, and a welding gun is provided on the output shaft of the linear motor.

[0013] Compared with the existing technology, the benefits of the present invention are: by sending the slider into the interior of the structure, it is convenient for the operator to weld the internal structure; multiple welding guns are provided on the slider, which can weld multiple welds at the same time, thereby improving welding efficiency.

[0014] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In addition, in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of an embodiment of an automatic and efficient pipe inner wall welding device of the utility model;

[0016] Figure 2 for Figure 1 Cross-sectional view at AA in the middle;

[0017] Figure 3 for Figure 2 A magnified schematic diagram of point B in the middle;

[0018] Figure 4 for Figure 2 The enlarged schematic diagram of point C in the middle;

[0019] Figure 5 for Figure 1 The enlarged schematic diagram of point D in the middle;

[0020] Figure 6 for Figure 2 The enlarged schematic diagram of point E in the middle;

[0021] Figure 7 Schematic diagram of the C-shaped block welded in an embodiment of the present invention.

[0022] Reference numerals

[0023] 1- Base;

[0024] 2- Slider;

[0025] 3-slider, 301-first hydraulic cylinder, 302-second hydraulic cylinder, 303-first bracket, 304-first roller, 305-first motor, 306-first rubber sleeve, 307-second bracket, 308-second roller, 309-second motor, 310-second rubber sleeve, 311-first through hole, 312-first slot, 313-second through hole, 314-second slot;

[0026] 4-swing arm, 401-rotating shaft, 402-locking bolt, 403-long hole, 404-adjusting bolt group, 405-third slot;

[0027] 5-Welding gun. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The utility model is an embodiment of an automatic and efficient pipe inner wall welding device, as shown in FIG. Figures 1 to 6 The device comprises a base 1, on which a slide bar 2 is mounted vertically. A slider 3 is mounted on the slider 2 for sliding and rotating movement. Multiple swing arms 4 are circumferentially distributed on the slider 3. The swing arms 4 are swingably mounted on the slider 4, with the swing plane of the swing arms 4 being perpendicular to the slide bar 2. A welding gun 5 is mounted on each swing arm 4. In this embodiment, four swing arms 4 are mounted on the slider 4, each with a welding gun 5 mounted thereon.

[0030] Two first hydraulic cylinders 301 and two second hydraulic cylinders 302 are symmetrically arranged on the outer wall of the slider 3. The output shaft extension trajectory lines of the two first hydraulic cylinders 301 coincide with each other, and the output shaft extension trajectory lines of the two second hydraulic cylinders 302 coincide with each other. The output shaft extension trajectory line of the first hydraulic cylinder 301 is perpendicular to the output shaft extension trajectory line of the second hydraulic cylinder 302. The output shaft extension trajectory line of the first hydraulic cylinder 301 and the output shaft extension trajectory line of the second hydraulic cylinder 302 are both perpendicular to the axis of the slide rod 2.

[0031] The output shaft of the first hydraulic cylinder 301 is inserted into the first through-hole 311 of the slider 3. A first slot 312 is defined on the curved surface of the slider 4 facing the slide bar 2, connecting the first through-hole 311 to the first slot 312. A first bracket 303 is positioned within the first slot 312, and the end of the output shaft of the first hydraulic cylinder 301 is mounted on the first bracket 303. Driven by the first hydraulic cylinder 301, the first bracket 303 can move within the first slot 312, with the extended line of its movement path perpendicular to the axis of the slide bar 2.

[0032] A first roller 304 is rotatably mounted on the first bracket 303. A first motor 305 is fixedly mounted on the first bracket 303. The output shaft of the first motor 305 is connected to the rotating shaft of the first roller 304 to drive the first roller 304 in rotation. A first rubber sleeve 306 is wrapped around the outer circumference of the first roller 304. Under the action of the first hydraulic cylinder 301, the first roller 304 can extend out of the first slot 312 and rest against the sliding rod 2. The first rubber sleeve 306 increases the friction between the first roller 304 and the sliding rod 2, preventing the first roller 304 from slipping when rolling on the sliding rod 2. Furthermore, under the action of the first hydraulic cylinder 301, the first rubber sleeve 306 is pressed against the sliding rod 2 and deformed, so that the surface of the first rubber sleeve 306 matches the curved surface of the sliding rod 2, preventing the first roller 304 from deflecting from the sliding rod 2 when rolling. The tangent direction of the contact point between the first roller 304 and the sliding rod 2 is parallel to the axis of the sliding rod 2.

[0033] The output shaft of the second hydraulic cylinder 302 is inserted into the second through-hole 313 of the slider 3. A second slot 314 is defined on the surface of the slider 4 facing the slide bar 2, connecting the second through-hole 313 to the second slot 314. A second bracket 307 is positioned within the second slot 314, and the end of the output shaft of the second hydraulic cylinder 302 is mounted on the second bracket 307. Driven by the second hydraulic cylinder 302, the second bracket 307 can move within the second slot 312, with the extended line of its movement path perpendicular to the axis of the slide bar 2.

[0034] A second roller 308 is rotatably mounted on the second bracket 307. A second motor 309 is fixedly mounted on the second bracket 307. The output shaft of the second motor 309 is connected to the rotating shaft of the second roller 308, driving the second roller 308 to rotate. A second rubber sleeve 310 is wrapped around the outer circumference of the second roller 308. Under the action of the second hydraulic cylinder 302, the second roller 308 can extend out of the second slot 314 and abut against the sliding bar 2. The second rubber sleeve 310 increases the friction between the second roller 308 and the sliding bar 2, preventing the second roller 308 from slipping when rolling on the sliding bar 2. Furthermore, under the action of the second hydraulic cylinder 302, the second rubber sleeve 310 is pressed against the sliding bar 2 and deformed, so that the surface of the second rubber sleeve 310 aligns with the curved surface of the sliding bar 2, preventing the second roller 308 from deflecting from the sliding bar 2 when rolling. The tangent direction of the contact point between the second roller 308 and the sliding bar 2 is perpendicular to the axis of the sliding bar 2.

[0035] The outer wall of the slider 3 is provided with a third slot 405 for mounting the swing arm 4. A rotating shaft 401 is fixedly mounted on the inner wall of the third slot 405, and the end of the swing arm 4 is rotatably sleeved on the rotating shaft 401. A locking bolt 402 is threadedly connected to the slider 3. The locking bolt 402 passes through the outer wall of the slider 3 and is inserted into the inner wall of the third slot 405. The locking bolt 402 can abut the end of the swing arm 4 near the rotating shaft 401. After adjusting the swing arm 4 to the desired position, the locking bolt 402 can be tightened to secure the swing arm 4.

[0036] The swing arm 4 is provided with a long hole 403 extending along the length of the swing arm 4, and the welding gun 5 is fixed to the swing arm 4 by adjusting the bolt group 404. By adjusting the cooperation between the bolt group 404 and the long hole 403, the position of the welding gun 5 on the swing arm 4 can be adjusted.

[0037] When using this device to weld C-type blocks, the cross-sectional view of the C-type blocks is as follows: Figure 7 As shown, the right-angle position is the weld seam. First, adjust the angle of the swing arm 4 and the installation position of the welding gun 5 according to the shape and size of the C-block. Then start the first hydraulic cylinder 301, so that the first roller 304 is pressed against the slide bar 2, and the slider 3 of the device is placed inside the C-block so that the welding head of the welding gun 5 can be close to the corresponding weld seam. Start the first motor 305, wherein the first rollers 304 of the two first hydraulic cylinders 301 rotate in opposite directions, and start the welding gun 5 at the same time. While the slider moves, the four weld seams of the C-block can be welded simultaneously, thereby improving welding efficiency. At the same time, there is no need for welders to weld inside the C-block, which is convenient to operate.

[0038] In other embodiments, a swing motor can be set on the outer wall of the slider 3, and the swing arm 4 is set on the output shaft of the swing motor. The swing of the swing arm 4 is controlled by the swing motor, as long as the swing plane of the swing arm 4 is perpendicular to the slide bar 2. Then, a linear motor can be set on the swing arm 4, and a welding gun 5 is set on the output shaft of the linear motor. The relative position of the welding gun 5 and the swing arm 4 is adjusted by extending and retracting the output shaft of the linear motor to determine the extended length of the welding gun 5.

[0039] When a swing motor and a linear motor are provided on the slider 3, the device can weld more complex internal structures. At this time, the control valves of the first hydraulic cylinder 301 and the second hydraulic cylinder 302, as well as the first motor 305, the second motor 309, the swing motor, the linear motor, and the welding gun are all connected to the control device (such as a single-chip microcomputer, PLC, etc.). When the slider 3 is extended into the structure for welding, the angle of the swing arm 4 and the extension length of the welding gun 5 can be adjusted in real time according to the position of the internal weld; the first roller 304 can be pressed against the slide bar 2 by the first hydraulic cylinder 301 as needed (at this time, the second roller 308 does not contact the slide bar 2), and the first motor 305 is started to move the slider 3 along the slide bar 2; the second roller 308 can also be pressed against the slide bar 2 by the second hydraulic cylinder 302 as needed (at this time, the first hydraulic cylinder 301 contracts and the first roller 304 does not contact the slide bar 2), and the second motor 309 is started (the two second motors 309 rotate in opposite directions) to rotate the slider 3 around the slide bar 2, thereby changing the running trajectory of the welding gun 5; through the above measures, the position of the welding head of the welding gun 5 can be changed to a greater extent, and more complex internal structures can be welded.

[0040] The movement process of the hydraulic cylinder and motor can be set in advance in the control device according to the structure to be welded, or a camera connected to the control device can be set on the slider 3 to control the movement of the hydraulic cylinder and motor in real time according to the weld captured by the camera.

[0041] In other embodiments, the two symmetrically arranged first hydraulic cylinders 301 can be reduced to one, and correspondingly, steel balls are nested on the inner wall of the slider 3 at a symmetrical position of the first hydraulic cylinder 301, and the steel balls are in rolling contact with the slide rod 2, replacing the corresponding first rollers with the steel balls; similarly, the two symmetrically arranged second hydraulic cylinders 302 can be reduced to one, and the corresponding second rollers can be replaced with steel balls.

[0042] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic and efficient pipe inner wall welding device, comprising a base, characterized in that: A sliding rod is provided on the base, a sliding block is provided on the sliding rod, a first hydraulic cylinder and a second hydraulic cylinder are provided on the outer wall of the sliding block, the output shaft of the first hydraulic cylinder is passed through the first through hole of the sliding block, the sliding block is provided with a first groove facing the arc surface of the sliding rod, the first through hole is connected to the first groove, a first bracket is provided in the first groove, the output shaft end of the first hydraulic cylinder is provided on the first bracket, and the extension line of the moving trajectory of the output shaft of the first hydraulic cylinder is perpendicular to the axis of the sliding rod; a first roller is rotatably provided on the first bracket, a first motor is fixedly provided on the first bracket, and the output shaft of the first motor is connected to the rotating shaft of the first roller; a first rubber sleeve is wrapped around the outer circumference of the first roller, and the tangent direction of the contact point after the first roller contacts the sliding rod is parallel to the axis of the sliding rod; The output shaft of the second hydraulic cylinder is passed through the second through hole of the slider, and a second groove is formed on the surface of the slider facing the slide rod. The second through hole is connected to the second groove. A second bracket is arranged in the second groove, and the end of the output shaft of the second hydraulic cylinder is arranged on the second bracket. The extension line of the moving trajectory of the output shaft of the second hydraulic cylinder is perpendicular to the axis of the slide rod; a second roller is rotatably arranged on the second bracket, and a second motor is fixedly arranged on the second bracket. The output shaft of the second motor is connected to the rotating shaft of the second roller, and a second rubber sleeve is wrapped around the outer circumference of the second roller. The tangent direction of the contact point after the second roller contacts the slide rod is perpendicular to the axis of the slide rod; A plurality of swing arms are distributed on the outer side wall of the sliding block, and welding guns are arranged on the swing arms.

2. The automatic and efficient pipe inner wall welding device according to claim 1, characterized in that: Two first hydraulic cylinders and two second hydraulic cylinders are symmetrically arranged on the outer side wall of the slider, the output shaft extension trajectory lines of the two first hydraulic cylinders coincide with each other, the output shaft extension trajectory lines of the two second hydraulic cylinders coincide with each other, and the output shaft extension trajectory line of the first hydraulic cylinder is perpendicular to the output shaft extension trajectory line of the second hydraulic cylinder.

3. The automatic and efficient pipe inner wall welding device according to claim 1, characterized in that: The swing plane where the swing arm is located is perpendicular to the slide bar.

4. The automatic and efficient pipe inner wall welding device according to claim 1, characterized in that: The outer wall of the slider is provided with a third groove for installing the swing arm, the inner wall of the third groove is fixedly provided with a rotating shaft, the end of the swing arm is rotatably sleeved on the rotating shaft, and a locking bolt is threadedly connected to the slider. The locking bolt passes through the outer wall of the slider to the inner wall of the third groove and can be against the end of the swing arm close to the rotating shaft.

5. The automatic and efficient pipe inner wall welding device according to claim 1, characterized in that: The swing arm is provided with a long hole extending along the length of the swing arm, and the welding gun is fixed on the swing arm through an adjusting bolt group.

6. The automatic and efficient pipe inner wall welding device according to claim 1, characterized in that: A swing motor is arranged on the outer side wall of the sliding block, and a swing arm is arranged on the output shaft of the swing motor.

7. The automatic and efficient pipe inner wall welding device according to claim 1, characterized in that: A linear motor is arranged on the swing arm, and a welding gun is arranged on the output shaft of the linear motor.

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