CN116900491A - Welding device and welding method for engineering pipe fitting - Google Patents
Welding device and welding method for engineering pipe fitting Download PDFInfo
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- CN116900491A CN116900491A CN202311175021.2A CN202311175021A CN116900491A CN 116900491 A CN116900491 A CN 116900491A CN 202311175021 A CN202311175021 A CN 202311175021A CN 116900491 A CN116900491 A CN 116900491A
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- 238000004891 communication Methods 0.000 claims description 15
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 2
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- 238000003780 insertion Methods 0.000 description 12
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Abstract
The invention relates to the technical field of pipeline welding, in particular to a welding device and a welding method for engineering pipe fittings, wherein the welding device comprises a base, two centering clamping mechanisms which are symmetrical in welding center are arranged on the base, a mounting frame which is positioned at one side of the two centering clamping mechanisms is also arranged on the base, and laser welding equipment and a welding head which faces downwards are arranged at the top end of the mounting frame; the centering clamping mechanism comprises a fixed cylinder fixedly arranged on the base, and a rotary cylinder is rotatably arranged in the fixed cylinder. According to the invention, the pipeline to be welded can be rapidly and accurately clamped through the centering clamping mechanism, and the pipeline to be welded is ensured to be in a concentric circle position relative to the fixed cylinder, so that the ports of the two pipelines to be welded can be rapidly aligned, and meanwhile, the height of the welding head can be adaptively adjusted according to the outer diameter of the pipeline to be welded, namely, the welding focal length is adaptively adjusted, manual adjustment is not needed, and the welding head is efficient and convenient, and has a wider application range.
Description
Technical Field
The invention relates to the technical field of pipeline welding, in particular to a welding device and a welding method for engineering pipe fittings.
Background
In the building construction process, pipelines are often required to be welded, and two pipelines are welded together end to end. To ensure alignment between the two pipes to improve stability during welding, special equipment is typically used to clamp and secure the pipes. The Chinese patent publication No. CN110303287B provides a pipeline flange precision welding device, which comprises a welding bench, a left flange clamping device, a right flange clamping device, a driving motor and a welding gun, wherein a welding bench is arranged above the welding bench, a transmission screw rod is transversely arranged in the right side of the welding bench, the left flange clamping device comprises a left welding vertical frame, the left welding vertical frame is fixedly arranged on the left side of the welding bench, a left welding rotating shaft is horizontally arranged on the left welding vertical frame, the outer end of the left welding rotating shaft is in transmission connection with the driving motor arranged on the welding bench through a belt, the right flange clamping device comprises a right welding vertical frame, the right welding vertical frame is slidably arranged on the welding bench, the lower end part of the right welding vertical frame is in threaded connection with the transmission screw rod, the right welding vertical frame is controlled to move left and right through rotating the transmission screw rod, and the right welding rotating shaft is horizontally arranged on the right welding vertical frame.
The device is suitable for pipelines with various specifications, has certain progress significance, is still complicated in use, and requires replacement of the matched centering top block and the flange screw hole calibration taper table when pipelines with different sizes are welded, so that extra working time is consumed; the laser welding method is mainly applicable to the working scene of manual welding, and is difficult to be qualified for the widely used laser welding mode at the present stage.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a welding device and a welding method for engineering pipe fittings, which can effectively solve the problem that fittings are required to be replaced when pipes with different specifications are welded in the prior art.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the welding device and the welding method for the engineering pipe fitting comprise a base, wherein two centering clamping mechanisms which are symmetrical in welding center are arranged on the base, a mounting frame which is positioned at one side of the two centering clamping mechanisms is also arranged on the base, and laser welding equipment and a welding head which faces downwards are arranged at the top end of the mounting frame;
the centering clamping mechanism comprises a fixed cylinder fixedly arranged on a base, a rotary cylinder is rotatably arranged in the fixed cylinder, a plurality of movable top plates are equidistantly inserted into the inner wall of the rotary cylinder, slopes are formed in the front end of one side, far away from a welding head, of each movable top plate, pipelines with different pipe diameters can be directly inserted into the rotary cylinder through the slopes, a plurality of sliding holes for the movable top plates to move are formed in the inner wall of the rotary cylinder, a communication cavity communicated with each sliding hole is formed in the rotary cylinder, and each movable top plate is elastically installed;
the mounting frame comprises a vertical frame and a transverse frame, a top contact plate is horizontally inserted on the vertical frame, inclined ports are formed in two sides of the front end of the top contact plate, the top contact plate is elastically mounted, the welding head is vertically inserted on the transverse frame, the welding head and the top contact plate are mutually matched through a follow-up mechanism, and the follow-up mechanism enables the welding head and the top contact plate to be synchronously close to or far away from a welding center.
In the welding device for the engineering pipe fitting, the bottom of the fixed cylinder is provided with the driving port, the base is provided with two driving motors respectively positioned below the two centering clamping mechanisms, the outer wall of the rotary cylinder is provided with the tooth slot, the driving shaft of the driving motor is provided with the driving gear matched with the tooth slot, and the two driving motors are synchronously driven by the synchronous encoder.
In the welding device of the engineering pipe fitting, the vent hole which is communicated with the cavity is formed in one end of the rotary cylinder, the pressure release valve is arranged on the vent hole and comprises an insertion pipe which is matched with the vent hole, the end part of the insertion pipe is hermetically provided with the end plate, a first tension spring is connected between the end plate and the rotary cylinder, and the insertion pipe is provided with the vent hole which is communicated with the inside of the insertion pipe.
In the welding device of the engineering pipe fitting, the following mechanism comprises a first gear meshed with the top contact plate and a second gear meshed with the welding head, an equipment cavity is formed in the mounting frame, a transmission assembly is arranged in the equipment cavity, and the rotation directions of the first gear and the second gear are opposite through the transmission assembly.
In the welding device of the engineering pipe fitting, the transmission assembly comprises a third gear meshed with the second gear, one sides of the first gear and the third gear are coaxially connected with belt pulleys, double grooved wheels are further arranged in the equipment cavity, and the two belt pulleys are in homodromous transmission with the double grooved wheels through a belt.
In the welding device for the engineering pipe fitting, the middle part of the front end of the top contact plate is provided with a groove, and the front ends of the top contact plate and the movable top plate are movably provided with balls.
In the welding device for the engineering pipe fitting, the tail end of the top contact plate is provided with the connecting plate, a second tension spring is connected between the connecting plate and the mounting frame, and the front end of the top contact plate is enabled to be always attached to the outer wall of the pipe to be welded by the second tension spring.
The invention also provides a welding method of the engineering pipe fitting, which is applied to the welding device, wherein two pipes to be welded are respectively inserted from the opposite ends of the two centering clamping mechanisms, the movable top plates are pressed backwards by the pipes to be welded, the movement amplitude of each movable top plate is the same through the joint cooperation of the same air pressure and the elastic force in the communicating cavity, and the jacking forces applied to the pipes to be welded are the same, so that the pipes to be welded are kept in the centering; meanwhile, the top contact plate is extruded by a pipeline to be welded to move backwards, and the welding head is driven to lift and self-adaptively adjust the welding focal length while moving.
Compared with the prior art, the pipe to be welded can be clamped rapidly and accurately through the centering clamping mechanism, and the pipe to be welded can be ensured to be positioned in a concentric circle position relative to the fixed cylinder, so that ports of two pipes to be welded can be aligned rapidly, and meanwhile, the height of a welding head can be adjusted adaptively according to the outer diameter of the pipe to be welded, namely, the welding focal length is adjusted adaptively, manual adjustment is not needed, the pipe to be welded is efficient and convenient, and the application range is wider.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is an enlarged view of the structure at A of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a schematic front view of the present invention;
FIG. 5 is a cross-sectional view of B-B of FIG. 4;
FIG. 6 is a cross-sectional view of C-C of FIG. 4;
FIG. 7 is a cross-sectional view of the centering clamp mechanism of FIG. 6;
FIG. 8 is a cross-sectional view of the centering clip mechanism of the present invention;
fig. 9 is a schematic structural view of a pressure release valve according to the present invention.
Reference numerals in the drawings represent respectively: 1. a base; 2. centering the clamping mechanism; 201. a fixed cylinder; 202. a rotary drum; 203. a pressure release valve; 2031. a cannula; 2032. an end plate; 2033. a vent hole; 2034. a first tension spring; 204. a movable top plate; 205. a driving port; 206. a communication chamber; 207. a top spring; 3. a driving motor; 4. a mounting frame; 401. an equipment chamber; 402. a first gear; 403. a double sheave; 404. a second gear; 405. a third gear; 5. a laser welding apparatus; 6. a welding head; 7. a top touch plate; 701. a bevel opening; 702. a ball; 703. and a second tension spring.
Description of the embodiments
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is further described below with reference to examples.
Examples: referring to fig. 1-9, a welding device for engineering pipe fittings comprises a base 1, wherein two centering clamping mechanisms 2 which are symmetrical in welding center are arranged on the base 1, the end parts of two pipelines to be welded meet in the welding center, a mounting frame 4 positioned on one side of the two centering clamping mechanisms 2 is further arranged on the base 1, a laser welding device 5 and a welding head 6 which faces downwards are arranged at the top end of the mounting frame 4, the welding head 6 is connected with the laser welding device 5, and the welding head 6 emits laser to weld the pipelines.
The centering fixture 2 comprises a fixed cylinder 201 fixedly arranged on a base 1, a rotary cylinder 202 is rotatably arranged in the fixed cylinder 201, a plurality of movable top plates 204 are inserted into the inner wall of the rotary cylinder 202 at equal intervals, slopes are formed in the front end of one side, far away from a welding head 6, of each movable top plate 204, pipelines with different pipe diameters can be directly inserted into the rotary cylinder 202 through the slopes, sliding holes for the movable top plates 204 to move are formed in the inner wall of the rotary cylinder 202, the sliding holes are tightly matched with the movable top plates 204, internal gas cannot be discharged through gaps, a piston-like fit is formed, a communication cavity 206 communicated with each sliding hole is formed in the rotary cylinder 202, each movable top plate 204 is elastically mounted, and the tail end of each movable top plate 204 is mounted in the sliding hole through a top spring 207.
When the pipes are welded, firstly, two pipes are inserted from opposite ends of the two rotary drums 202 respectively, as the movable top plate 204 is provided with a slope, the pipes to be welded can extrude the movable top plate 204 to the rear, so that the air pressure in the communication cavity 206 is changed, and as each sliding hole is communicated with the communication cavity 206, the air pressure born by the tail end of each movable top plate 204 is the same, meanwhile, as the tail end of each movable top plate 204 is connected with the top spring 207, the acting force born by the top spring 207 is the same, the expansion length of each top spring 207 is the same, the expansion amplitude of each movable top plate 204 is the same on the movable top plate 204, therefore, the pipe to be welded inserted into the rotary drum 202 is exactly at the center of the rotary drum 202, and forms a concentric circle with the rotary drum 202, so that the two pipes to be welded are always aligned, a stable clamping effect is provided for the subsequent welding process, and the operation mode is extremely simple and can be realized by only inserting the pipe to be welded into the rotary drum 202, so that the pipe to be suitable for various pipelines in a specific range can be used, and the welding quality can be remarkably improved.
Referring to fig. 4 and 8, a driving port 205 is formed in the bottom of the fixed cylinder 201, two driving motors 3 respectively located below the two centering and clamping mechanisms 2 are arranged on the base 1, tooth grooves are formed in the outer wall of the rotary cylinder 202, driving gears matched with the tooth grooves are arranged on the driving shafts of the driving motors 3, and the two driving motors 3 are synchronously driven through synchronous encoders.
Because rotary drum 202 rotates and installs in fixed section of thick bamboo 201, consequently rotary drum 202 is rotatable relative fixed section of thick bamboo 201, drive mouth 205 is seted up to the bottom of fixed section of thick bamboo 201, drive gear can be through the outer wall meshing of drive mouth 205 with rotary drum 202, and then realize the rotation control of rotary drum 202 and treating the welded pipe, control two rotary drums 202 of synchronous drive of two driving motor 3 through synchronous encoder, can control two simultaneously and treat the welded pipe rotation, and then realized the automation of welding process, welding head 6 keeps outputting laser, synchronous at uniform velocity rotation two treat the welded pipe can accomplish the welding process to two pipes, degree of automation is high, work efficiency is promoted.
Further, referring to fig. 8-9, an exhaust hole leading into the communication cavity 206 is formed in one end of the rotary cylinder 202, a pressure release valve 203 is mounted on the exhaust hole, the pressure release valve 203 comprises an insertion tube 2031 adapted to the exhaust hole, an end plate 2032 is mounted at the end of the insertion tube 2031 in a sealing manner, a first tension spring 2034 is connected between the end plate 2032 and the rotary cylinder 202, and a venting hole 2033 leading into the insertion tube 2031 is formed in the insertion tube 2031.
Because the movable top plate 204 needs to be pressed backwards in the process of inserting the pipe to be welded, the air pressure of the communication cavity 206 is gradually increased in the process, when the pipe with a larger pipe diameter to be welded is installed, the air pressure of the communication cavity 206 is larger, and at the moment, the movable top plate 204 is difficult to be pressed backwards, so that a part of air pressure is properly discharged when the air pressure in the communication cavity 206 is overlarge by the pressure release valve 203, the installation process is smooth, and the convenience in use is improved.
The outer wall of the insertion tube 2031 and the vent hole also form a piston-like fit, gas cannot leak out from the gap between the insertion tube 2031 and the vent hole, the first tension spring 2034 is gradually elongated as the air pressure in the communication chamber 206 is gradually increased, the insertion tube 2031 is gradually moved outward, and when the air pressure in the communication chamber 206 is increased to a specific value (this specific value is determined by the position of the vent hole 2033 and the stiffness coefficient of the first tension spring 2034), the vent hole 2033 is exposed, the gas in the communication chamber 206 is discharged, and feedback to the operator feels that the obstruction of inserting the pipe to be welded becomes small, and the operation is smoother. The air release hole 2033 still maintains high air pressure in the communication cavity 206 after removing a part of air, so that the centering clamping and fixing of the pipeline cannot be affected. After a part of the air pressure is removed, the insertion tube 2031 moves back due to the restoring effect of the first tension spring 2034, the air leakage hole 2033 is blocked again, and the air does not continuously leak. The pressure release valve 203 has a simple structure and ingenious design, and can effectively improve the convenience of equipment in use.
Referring to fig. 1, the mounting frame 4 includes a vertical frame and a horizontal frame, a top contact plate 7 is horizontally inserted on the vertical frame, two sides of the front end of the top contact plate 7 are respectively provided with a bevel opening 701, the existence of the bevel openings 701 is basically the same as the effect of a slope on the movable top plate 204, the top contact plate 7 can not obstruct a pipeline to be welded from reaching a welding center, the top contact plate 7 is elastically installed, the top contact plate 7 is always attached to the surface of the pipeline, the welding head 6 is vertically inserted on the horizontal frame, the welding head 6 and the top contact plate 7 are mutually matched through a follow-up mechanism, and the follow-up mechanism enables the welding head 6 and the top contact plate 7 to be synchronously close to or far away from the welding center.
Specifically, referring to fig. 5, the follower mechanism includes a first gear 402 engaged with the top contact plate 7 and a second gear 404 engaged with the welding head 6, an equipment cavity 401 is formed in the mounting frame 4, and a transmission assembly is mounted in the equipment cavity 401, and the transmission assembly makes the rotation directions of the first gear 402 and the second gear 404 opposite.
The follow-up mechanism can enable the top touch plate 7 to synchronously drive the welding head 6 to lift when moving, so when the outer diameter of a pipeline to be welded changes, the distance of the back movement of the top touch plate 7 changes, the height of the welding head 6 correspondingly changes, namely, the welding focal length is adaptively changed, the height of the welding head 6 can be automatically adjusted according to the outer diameter of the pipeline to be welded, manual adjustment is not needed, only two pipelines to be welded are needed to be inserted into the centering clamping mechanism 2 when welding operation is carried out every time, then the power supply of equipment is started, the welding process can be automatically completed, the operation is very convenient, and the working efficiency is greatly improved.
The front end of the top contact plate 7 is close to the central axis of the rotary cylinder 202 in a natural state, when a pipe to be welded is inserted, the top contact plate 7 moves backwards due to the existence of the bevel 701, the first gear 402 is driven to rotate while the top contact plate 7 moves backwards, the second gear 404 is enabled to rotate simultaneously through the transmission assembly, but the rotation direction of the second gear 404 and the first gear 402 rotate, the first gear 402 rotates anticlockwise (taking fig. 5 as an example) when the top contact plate 7 moves backwards, the second gear 404 rotates clockwise, the welding head 6 moves upwards, and in fact, the top contact plate 7 and the welding head 6 are synchronously away from the welding center.
Referring to fig. 5, the transmission assembly includes a third gear 405 engaged with a second gear 404, one side of each of the first gear 402 and the third gear 405 is coaxially connected with a pulley, a double sheave 403 is further installed inside the apparatus chamber 401, and both pulleys are driven in the same direction with the double sheave 403 by a belt. The first gear 402 and the third gear 405 are connected through the belt pulley, and the rotation direction of the second gear 404 is changed through the third gear 405, so that the butt welding joint 6 is controlled correctly, and simplicity and high efficiency are achieved.
Referring to fig. 2 and 8, a groove is formed in the middle of the front end of the top contact plate 7, and balls 702 are movably mounted at the front ends of the top contact plate 7 and the movable top plate 204. Since some burrs may exist at the end of the pipe to be welded inevitably, in order to avoid the burrs from scratching the top contact plate 7 and affecting the precision of the equipment, a groove is formed in the middle of the top contact plate 7 to accommodate the burrs which may exist at the ports of two pipes to be welded, and balls 702 are mounted at the ends of the top contact plate 7 and the movable top plate 204, so that the smoothness of pushing the pipe to be welded is improved, and the convenience of use is further improved.
Referring to fig. 6, a connection plate is provided at the tail end of the top contact plate 7, and a second tension spring 703 is connected between the connection plate and the mounting frame 4, and the second tension spring 703 makes the front end of the top contact plate 7 always contact with the outer wall of the pipe to be welded. The top contact plate 7 always has a tendency to approach the pipe to be welded by the second tension spring 703, so that the front end thereof stably abuts against the surface of the pipe to be welded.
The invention also provides a welding method of the engineering pipe fitting, which is applied to the welding device, wherein two pipes to be welded are respectively inserted from the opposite ends of the two centering clamping mechanisms 2, the movable top plates 204 are pressed backwards by the pipes to be welded, the movement amplitude of each movable top plate 204 is the same through the joint cooperation of the same air pressure and the elastic force in the communication cavity 206, and the jacking force applied to the pipes to be welded is the same, so that the pipes to be welded are centered and maintained; meanwhile, the top contact plate 7 is extruded by a pipeline to be welded to move backwards, and the welding head 6 is driven to lift and self-adaptively adjust the welding focal length while moving. According to the welding method, the working efficiency can be greatly improved, the two pipelines to be welded can be rapidly centered and clamped through the two centering clamping mechanisms 2, so that the two pipelines to be welded are identical in height and coaxiality, compared with the traditional alignment equipment, the two pipelines to be welded are more efficient and convenient, the two pipelines to be welded also form concentric circles relative to the centering clamping mechanisms 2, the alignment precision is high, the welding pipe centering device is also suitable for welded pipes of different specifications, the operation convenience is further improved, and the welding pipe centering device can be directly used without frequently adjusting equipment or replacing components. In addition, the height of the butt welding joint 6 can be automatically adjusted after the welding joint is clamped rapidly, so that the welding joint 6 and the surface of a welded pipe always keep proper welding distance, and after the welded pipe is clamped, equipment can be directly started for welding, and the efficiency and the operation simplicity of the equipment are obviously improved.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The welding device for the engineering pipe fitting is characterized by comprising a base (1), wherein two centering clamping mechanisms (2) which are symmetrical in welding center are arranged on the base (1), a mounting frame (4) positioned at one side of the two centering clamping mechanisms (2) is further arranged on the base (1), and laser welding equipment (5) and a welding head (6) facing downwards are arranged at the top end of the mounting frame (4);
the centering clamping mechanism (2) comprises a fixed cylinder (201) fixedly arranged on a base (1), a rotary cylinder (202) is rotatably arranged in the fixed cylinder (201), a plurality of movable top plates (204) are equidistantly inserted into the inner wall of the rotary cylinder (202), slopes are formed in the front ends of one sides, far away from a welding head (6), of the movable top plates (204), pipelines with different pipe diameters can be directly inserted into the rotary cylinder (202) through the slopes, a plurality of sliding holes for the movable top plates (204) to move are formed in the inner wall of the rotary cylinder (202), a communication cavity (206) communicated with each sliding hole is formed in the rotary cylinder (202), and each movable top plate (204) is elastically installed;
the mounting frame (4) comprises a vertical frame and a transverse frame, a top contact plate (7) is horizontally inserted on the vertical frame, inclined ports (701) are formed in two sides of the front end of the top contact plate (7), the top contact plate (7) is elastically mounted, the welding head (6) is vertically inserted on the transverse frame, the welding head (6) and the top contact plate (7) are mutually matched through a follow-up mechanism, and the follow-up mechanism enables the welding head (6) and the top contact plate (7) to be close to or far away from a welding center relatively.
2. The welding device for engineering pipe fittings according to claim 1, wherein a driving opening (205) is formed in the bottom of the fixed cylinder (201), two driving motors (3) respectively located below the two centering clamping mechanisms (2) are arranged on the base (1), tooth grooves are formed in the outer wall of the rotating cylinder (202), driving gears matched with the tooth grooves are arranged on a driving shaft of the driving motor (3), and the two driving motors (3) are synchronously driven through synchronous encoders.
3. The welding device for engineering pipe fittings according to claim 1, characterized in that an exhaust hole which is communicated with the cavity (206) is formed in one end of the rotary cylinder (202), a pressure release valve (203) is installed on the exhaust hole, the pressure release valve (203) comprises a cannula (2031) which is matched with the exhaust hole, an end plate (2032) is installed at the end part of the cannula (2031) in a sealing mode, a first tension spring (2034) is connected between the end plate (2032) and the rotary cylinder (202), and a venting hole (2033) which is communicated with the interior of the cannula (2031) is formed in the cannula (2031).
4. The welding device for engineering pipe fittings according to claim 1, wherein the follow-up mechanism comprises a first gear (402) meshed with the top contact plate (7) and a second gear (404) meshed with the welding head (6), a device cavity (401) is formed in the mounting frame (4), and a transmission assembly is installed in the device cavity (401) and enables the rotation directions of the first gear (402) and the second gear (404) to be opposite.
5. The welding device for engineering pipe fittings according to claim 4, wherein the transmission assembly comprises a third gear (405) meshed with the second gear (404), one side of each of the first gear (402) and one side of the third gear (405) are coaxially connected with a belt pulley, a double grooved pulley (403) is further installed in the equipment cavity (401), and two belt pulleys are in same-direction transmission with the double grooved pulley (403) through a belt.
6. The welding device for engineering pipe fittings according to claim 1, wherein the middle part of the front end of the top contact plate (7) is provided with a groove, and the front ends of the top contact plate (7) and the movable top plate (204) are movably provided with balls (702).
7. The welding device for engineering pipes according to claim 1, wherein a connecting plate is arranged at the tail end of the top contact plate (7), a second tension spring (703) is connected between the connecting plate and the mounting frame (4), and the front end of the top contact plate (7) is always attached to the outer wall of the pipe to be welded by the second tension spring (703).
8. A welding method for engineering pipe fittings, which is applied to the welding device as claimed in any one of claims 1 to 7, and is characterized in that two pipes to be welded are respectively inserted from opposite ends of two centering clamping mechanisms, the movable top plates are pressed backwards by the pipes to be welded, the moving amplitude of each movable top plate is the same through the joint cooperation of the same air pressure and elastic force in the communicating cavity, and the pressing force applied to the pipes to be welded is the same, so that the pipes to be welded are centered and maintained; meanwhile, the top contact plate is extruded by a pipeline to be welded to move backwards, and the welding head is driven to lift and self-adaptively adjust the welding focal length while moving.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311175021.2A CN116900491A (en) | 2023-09-13 | 2023-09-13 | Welding device and welding method for engineering pipe fitting |
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| CN202311175021.2A CN116900491A (en) | 2023-09-13 | 2023-09-13 | Welding device and welding method for engineering pipe fitting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117961333A (en) * | 2023-12-30 | 2024-05-03 | 无锡义智兴精密科技有限公司 | Laser equipment for welding pipeline |
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| KR20200020433A (en) * | 2018-08-17 | 2020-02-26 | 삼성중공업 주식회사 | Orbital pipe welding apparatus |
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| CN116135388A (en) * | 2023-04-19 | 2023-05-19 | 沧州友发管道装备有限公司 | Forming and welding equipment and method for large-caliber spiral steel pipe |
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| CN112589363A (en) * | 2020-12-08 | 2021-04-02 | 深圳市果源石油化工有限公司 | Large-scale chemical industry container groove jar welding process frock clamp |
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| CN117961333A (en) * | 2023-12-30 | 2024-05-03 | 无锡义智兴精密科技有限公司 | Laser equipment for welding pipeline |
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