CN112404831A - Automatic welding equipment for inner wall of pipeline - Google Patents
Automatic welding equipment for inner wall of pipeline Download PDFInfo
- Publication number
- CN112404831A CN112404831A CN202011224979.2A CN202011224979A CN112404831A CN 112404831 A CN112404831 A CN 112404831A CN 202011224979 A CN202011224979 A CN 202011224979A CN 112404831 A CN112404831 A CN 112404831A
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- pipeline
- welding
- welding gun
- welded
- wall
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- 238000003466 welding Methods 0.000 title claims abstract description 119
- 230000033001 locomotion Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
The invention discloses automatic welding equipment for the inner wall of a pipeline, which comprises a supporting base, a welding gun moving device for adjusting the position and the posture of the welding gun, a pipeline preheating device for preheating a welding area, and a workpiece positioning tool for fixing a workpiece to be welded on the inner wall of the pipeline to be welded; the welding gun moving device comprises a welding gun connecting rod used for connecting a welding gun, a straight moving mechanism used for enabling the welding gun to translate along the length direction of the pipeline to be welded, a rotating mechanism used for enabling the welding gun to rotate on the cross section of the pipeline to be welded, and an inclination angle adjusting mechanism used for adjusting the inclination angle of the welding gun and the inner wall of the pipeline to be welded. The invention can carry out operations such as positioning, compressing, preheating, spot welding, welding and the like in the pipeline, and realizes the automatic welding of the workpiece on the inner wall of the pipeline with the inner diameter of 50 mm-200 mm.
Description
Technical Field
The invention relates to welding equipment, in particular to automatic welding equipment for an inner wall of a pipeline.
Background
Most of the existing automatic welding equipment aims at the external welding of structural parts, and generally can not carry out the welding operation of the inner wall of a narrow pipeline; the device does not have a preheating function generally, and cannot meet the requirement of a special welding process on preheating treatment of a welding area; meanwhile, when the interior of the pipeline is welded, due to the narrow space, manual operation is difficult to effectively fix the workpiece to be welded, and the subsequent welding quality is affected.
Disclosure of Invention
The invention aims to provide automatic welding equipment for the inner wall of a pipeline, which meets the welding operation of the inner wall of a narrow pipeline.
In order to achieve the purpose, the automatic pipeline inner wall welding equipment for welding a workpiece to be welded on the inner wall of a pipeline to be welded comprises a supporting base, a welding gun moving device for adjusting the position and the posture of the welding gun, a pipeline preheating device for preheating a welding area, and a workpiece positioning tool for fixing the workpiece to be welded on the inner wall of the pipeline to be welded; the welding gun moving device comprises a welding gun connecting rod used for connecting a welding gun, a straight moving mechanism used for enabling the welding gun to translate along the length direction of the pipeline to be welded, a rotating mechanism used for enabling the welding gun to rotate on the cross section of the pipeline to be welded, and an inclination angle adjusting mechanism used for adjusting the inclination angle of the welding gun and the inner wall of the pipeline to be welded.
Preferably, the welding gun is mounted on an inclination angle adjusting mechanism, the inclination angle adjusting mechanism is mounted on a rotary motion mechanism, the rotary motion mechanism is mounted at the front end of the welding gun connecting rod, and the straight motion mechanism is arranged at the rear end of the welding gun connecting rod.
Preferably, the straight-moving mechanism, the rotating mechanism and the tilt angle adjusting mechanism are all driven by a motor.
Preferably, the straight-moving mechanism adopts a feed screw nut pair for transmission, and the feed screw nut pair comprises a ball screw and a nut seat; the motor is fixed on the supporting base, and an output shaft of the motor is connected with the ball screw; and the nut seat is fixedly connected with the rear end of the welding gun connecting rod, and when the ball screw rotates, the nut seat moves along the length direction of the screw rod, so that the welding gun connecting rod and the upper part of the welding gun connecting rod are driven to move.
Preferably, the upper part of the support base is provided with a plurality of height-adjustable rod pipe brackets for placing the pipe to be welded and the welding gun connection rod.
Preferably, part or all of the rod pipe support is provided with a V-shaped support part, and rollers capable of rolling are provided on both sides of the V-shaped support part to reduce friction when the welding gun connection rod and the pipe to be welded move thereon.
Preferably, the pipeline preheating device is provided with a preheating device bracket; the pipeline preheating device support is arranged on the supporting base and can move along the length direction of the pipeline to be welded so as to adjust the preheating position.
Preferably, the workpiece positioning tool adopts a hollow split ring with an adjustable outer diameter; two ends of the opening of the hollow split ring are respectively provided with a flanging towards the direction in the ring, and the flanging is provided with a waist-round through hole; the double-end stud is arranged between the two flanges, a nut is respectively installed on the thread sections at two ends of the double-end stud, the end portions of the thread sections respectively extend into the through holes, and each nut is prevented from rotating and limited through limiting baffles arranged on two sides of each through hole. The two nuts are far away from or close to each other by rotating the threaded column, so that the outer diameter of the hollow split ring is adjusted, and a to-be-welded part on the inner wall of the pipeline is pressed or loosened.
Preferably, the lower part of the supporting base is provided with a height adjusting mechanism.
Compared with the prior art, the invention has the beneficial effects that:
1) the welding gun moving device can conveniently adjust the position of the welding gun, and realize the translation, rotation and angle adjustment of the welding gun;
2) the position of the workpiece to be welded is relatively fixed with the pipeline to be welded and the welding equipment through the workpiece positioning tool, so that automatic welding is facilitated;
3) the temperature of a welding area can be adjusted through the pipeline preheating device, the requirements of different welding processes are met, the temperature in the welding process is controllable, and the welding quality is improved;
4) the invention can carry out operations such as positioning, compressing, preheating, spot welding, welding and the like in the pipeline, and realizes the automatic welding of the workpiece on the inner wall of the pipeline with the inner diameter of 50 mm-200 mm.
Drawings
Fig. 1 is a schematic structural diagram of an automatic welding device for an inner wall of a pipeline according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of the welding apparatus of fig. 1 in a welding state.
Fig. 3 is a schematic structural view of the rectilinear motion mechanism and its vicinity in fig. 1.
Fig. 4 is a schematic structural diagram of a front end part of the welding gun connecting rod in fig. 1.
Fig. 5 is a schematic structural view of the pipe preheating device and the vicinity thereof in fig. 1.
Fig. 6 is a schematic cross-sectional view (perpendicular to the axial direction of the pipe) of the weld region of fig. 2.
Fig. 7 is a schematic structural diagram of the workpiece positioning tool in fig. 6.
Wherein: the pipe welding machine comprises a pipe to be welded 100, a workpiece to be welded 200, a supporting base 300, a rod pipe support 310, a V-shaped supporting portion 311, rollers 312, a height adjusting mechanism 320, a welding gun 400, a welding gun moving device 500, a welding gun connecting rod 510, a straight moving mechanism 520, a ball screw 521, a nut seat 522, a rotating mechanism 530, an inclination angle adjusting mechanism 540, a motor 550, a pipe preheating device 600, a preheating device support 610, a workpiece positioning tool 700, a flanging 710, a through hole 711, a stud 720 and a nut 730.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1 to 7, the automatic welding equipment for the inner wall of the pipeline designed by the present invention includes a support base 300, a welding gun 400, a welding gun moving device 500, a pipeline preheating device 600 and a workpiece positioning tool 700; wherein:
the upper portion of the support base 300 is provided with a plurality of height-adjustable rod pipe holders 310, by which the pipe to be welded 100 and the welding gun connection rod 510 are aligned in parallel and in proper relative positions. The partial pipe support 310 is provided with a V-shaped support 311, and rollers 312 capable of rolling are provided at both sides of the V-shaped support 311 to facilitate movement of the welding gun connection rod 510 and the pipe 100 to be welded thereon.
The welding gun moving device 500 includes a welding gun connecting rod 510, a straight moving mechanism 520, a rotating mechanism 530, and an inclination adjusting mechanism 540, and the straight moving mechanism 520, the rotating mechanism 530, and the inclination adjusting mechanism 540 are driven by a motor 550, respectively.
The straight-moving mechanism 520 adopts a feed screw nut pair for transmission, and the feed screw nut pair comprises a ball screw 521 and a nut seat 522; the motor 550 is fixed on the support base 300, and the output shaft thereof is connected with the ball screw 521; nut mount 522 is fixedly attached to the rear end of gun connector 510. When the ball screw 521 rotates, the nut seat 522 moves along the length direction of the screw, thereby moving the welding gun connection rod 510 and the upper part thereof.
The welding gun 400 is mounted on the inclination adjusting mechanism 540, the inclination adjusting mechanism 540 is mounted on the rotary moving mechanism 530, the rotary moving mechanism 530 is mounted at the front end of the welding gun connection rod 510, and the straight moving mechanism 520 is disposed at the rear end of the welding gun connection rod 510.
The process of the welding gun moving device 500 controlling the welding gun 400 to move is as follows: the inclination angle adjusting mechanism 540 drives the welding gun 400 to rotate so as to adjust the inclination angle between the welding gun 400 and the inner wall of the pipeline 100 to be welded, and the rotating shaft of the inclination angle adjusting mechanism is perpendicular to the axis of the pipeline 100 to be welded; the rotating mechanism 530 drives the inclination angle adjusting mechanism 540 and the welding gun 400 to integrally rotate around the axis of the pipe 100 to be welded so as to adjust the rotating angle of the welding gun 400; the straight-moving mechanism 520 drives the welding gun connecting rod 510 and the components at the front end thereof (the rotary moving mechanism 530, the inclination angle adjusting mechanism 540 and the welding gun 400) to integrally translate along the length direction of the pipe 100 to be welded.
The pipe preheating device 600 is provided with a preheating device bracket 610; the preheating device support 610 is mounted on the support base 300 through a guide rail and is movable in a length direction of the pipe 100 to be welded, thereby adjusting a preheating position.
The workpiece positioning tool 700 adopts a hollow split ring with an adjustable outer diameter; two ends of the opening of the hollow split ring are respectively provided with flanges 710 towards the direction inside the ring, and the flanges 710 are provided with a waist-round through hole 711; a stud 720 is arranged between the two flanges 710, a nut 730 is respectively arranged on the thread sections at the two ends of the stud 720, the end part of each thread section extends into the through hole 711, and each nut 730 is limited in an anti-rotation mode through limiting baffles (not shown in the figure) arranged at the two sides of the through hole 711. The two nuts 730 are far away from or close to each other (the openings are opened when the nuts are far away from each other, otherwise, the openings are automatically rebounded and closed) by rotating the threaded columns, so that the outer diameter of the hollow split ring is adjusted, and a to-be-welded part on the inner wall of the pipeline is pressed or loosened.
The lower portion of the support base 300 is provided with a height adjusting mechanism 320, the height adjusting mechanism 320 includes a nut and a bolt welded at the bottom of the support base 300, and the height and the flatness of the support base 300 are adjusted by changing the bolt tightening length.
The welding steps of the automatic welding equipment are as follows:
1) the pipeline 100 to be welded is fixed on the supporting base 300, and the relative positions of the welding gun 400 and the pipeline 100 to be welded are adjusted by adjusting the height of the rod pipe support 310, so that a uniform reference is provided for subsequent automatic welding.
2) The workpiece 200 to be welded (the thin tube in fig. 6 is only an example) is placed on the inner wall of the pipeline 100 to be welded, and passes through the pipeline preheating device 600, the position of the pipeline preheating device 600 is adjusted to be located outside the area to be welded, and the workpiece 200 to be welded is fixed from the inside of the pipeline through the workpiece positioning tool 700.
3) After the position of the workpiece 200 to be welded is fixed, the welding gun 400 is moved to the area to be welded by the straight movement mechanism 520, and the welding gun 400 is adjusted to a proper posture by the rotation movement mechanism 530 and the inclination adjustment mechanism 540.
4) The area to be welded is preheated from outside the pipe by the pipe preheating device 600 according to the welding process needs.
5) After preheating to the set temperature, the welding gun 400 performs a welding operation to complete the welding of the workpiece in the small-bore pipe 100 to be welded.
Claims (9)
1. An automatic welding device for the inner wall of a pipeline is used for welding a workpiece (200) to be welded on the inner wall of a pipeline (100) to be welded; the method is characterized in that: the welding device comprises a supporting base (300), a welding gun (400), a welding gun moving device (500) for adjusting the position and the posture of the welding gun (400), a pipeline preheating device (600) for preheating a welding area, and a workpiece positioning tool (700) for fixing a workpiece (200) to be welded on the inner wall of a pipeline (100) to be welded; the welding gun moving device (500) comprises a welding gun connecting rod (510) used for connecting a welding gun (400), a straight moving mechanism (520) used for enabling the welding gun (400) to translate along the length direction of the pipeline (100) to be welded, a rotating mechanism (530) used for enabling the welding gun (400) to rotate on the cross section of the pipeline (100) to be welded, and an inclination angle adjusting mechanism (540) used for adjusting the inclination angles of the welding gun (400) and the inner wall of the pipeline (100) to be welded.
2. The automatic pipe inner wall welding device according to claim 1, wherein: the welding gun (400) is arranged on an inclination angle adjusting mechanism (540), the inclination angle adjusting mechanism (540) is arranged on a rotary motion mechanism (530), the rotary motion mechanism (530) is arranged at the front end of a welding gun connecting rod (510), and the straight motion mechanism (520) is arranged at the rear end of the welding gun connecting rod (510).
3. The automatic pipe inner wall welding device according to claim 1, wherein: the straight motion mechanism (520), the rotary motion mechanism (530) and the inclination angle adjusting mechanism (540) are all driven by a motor (550).
4. The automatic pipe inner wall welding device according to claim 3, wherein: the straight-moving mechanism (520) adopts a feed screw nut pair for transmission, and the feed screw nut pair comprises a ball screw (521) and a nut seat (522); the motor (550) is fixed on the support base (300), and the output shaft of the motor is connected with the ball screw (521); the nut seat (522) is fixedly connected with the rear end of the welding gun connecting rod (510).
5. The automatic welding equipment for the inner wall of the pipeline according to any one of claims 1 to 4, wherein: the upper part of the supporting base (300) is provided with a plurality of height-adjustable rod pipe brackets (310) for placing a pipeline (100) to be welded and a welding gun connecting rod (510).
6. The automatic pipe inner wall welding device according to claim 5, wherein: part or all of the rod pipe support (310) is provided with a V-shaped supporting part (311), and rollers (312) capable of rolling are arranged on two sides of the V-shaped supporting part (311).
7. The automatic welding equipment for the inner wall of the pipeline according to any one of claims 1 to 4, wherein: the pipeline preheating device (600) is provided with a preheating device bracket (610); the preheating device bracket (610) is arranged on the supporting base (300) and can move along the length direction of the pipeline (100) to be welded.
8. The automatic welding equipment for the inner wall of the pipeline according to any one of claims 1 to 4, wherein: the workpiece positioning tool (700) adopts a hollow split ring with an adjustable outer diameter; two ends of the opening of the hollow split ring are respectively provided with a flanging (710) towards the direction in the ring, and the flanging (710) is provided with a waist-round through hole (711); two be provided with stud (720) between turn-ups (710), a nut (730) is installed respectively to the both ends screw thread section of stud (720), and the tip of screw thread section stretches into respectively in a through-hole (711), every nut (730) prevent changeing spacing through the limit baffle who sets up in through-hole (711) both sides.
9. The automatic welding equipment for the inner wall of the pipeline according to any one of claims 1 to 4, wherein: the lower part of the supporting base (300) is provided with a height adjusting mechanism (320).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011224979.2A CN112404831A (en) | 2020-11-05 | 2020-11-05 | Automatic welding equipment for inner wall of pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011224979.2A CN112404831A (en) | 2020-11-05 | 2020-11-05 | Automatic welding equipment for inner wall of pipeline |
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| Publication Number | Publication Date |
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| CN112404831A true CN112404831A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011224979.2A Pending CN112404831A (en) | 2020-11-05 | 2020-11-05 | Automatic welding equipment for inner wall of pipeline |
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| CN (1) | CN112404831A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112935835A (en) * | 2021-03-09 | 2021-06-11 | 李如福 | Radiator pipeline welded from inside, welding equipment and process |
| CN113020851A (en) * | 2021-04-01 | 2021-06-25 | 巴玛克电气设备（上海）有限公司 | Positioning device for continuous pipeline welding |
| CN114473121A (en) * | 2022-03-18 | 2022-05-13 | 安徽祥源汽车配件制造有限公司 | Intelligent assembling and welding device for automobile oil pipe joint |
| CN114643396A (en) * | 2022-04-21 | 2022-06-21 | 杭州力琪阀门有限公司 | Automatic welding equipment for inner ring of valve |
| CN118757781A (en) * | 2024-09-09 | 2024-10-11 | 河北海乾威钢管有限公司 | Welding seam preheating device for hydrogen transmission pipeline |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112935835A (en) * | 2021-03-09 | 2021-06-11 | 李如福 | Radiator pipeline welded from inside, welding equipment and process |
| CN112935835B (en) * | 2021-03-09 | 2022-03-18 | 万昌宏达(唐山)暖通设备有限公司 | Radiator pipeline welded from inside, welding equipment and process |
| CN113020851A (en) * | 2021-04-01 | 2021-06-25 | 巴玛克电气设备（上海）有限公司 | Positioning device for continuous pipeline welding |
| CN114473121A (en) * | 2022-03-18 | 2022-05-13 | 安徽祥源汽车配件制造有限公司 | Intelligent assembling and welding device for automobile oil pipe joint |
| CN114473121B (en) * | 2022-03-18 | 2022-09-27 | 安徽祥源汽车配件制造有限公司 | Intelligent assembling and welding device for automobile oil pipe joint |
| CN114643396A (en) * | 2022-04-21 | 2022-06-21 | 杭州力琪阀门有限公司 | Automatic welding equipment for inner ring of valve |
| CN118757781A (en) * | 2024-09-09 | 2024-10-11 | 河北海乾威钢管有限公司 | Welding seam preheating device for hydrogen transmission pipeline |
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Application publication date: 20210226 |
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