CN114619166A - Pipe fitting girth welding device - Google Patents
Pipe fitting girth welding device Download PDFInfo
- Publication number
- CN114619166A CN114619166A CN202210302196.4A CN202210302196A CN114619166A CN 114619166 A CN114619166 A CN 114619166A CN 202210302196 A CN202210302196 A CN 202210302196A CN 114619166 A CN114619166 A CN 114619166A
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- CN
- China
- Prior art keywords
- welding gun
- pipe
- elastic plate
- rod
- pipe fitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 78
- 230000003044 adaptive effect Effects 0.000 claims abstract description 6
- 238000010030 laminating Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Images
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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or welding
-
- 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
- B23K37/0533—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 external pipe alignment clamps
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Abstract
The invention discloses a pipe fitting girth welding device which comprises a base, wherein a power mechanism for driving a pipe fitting to rotate is arranged on the base; an inner ring positioning mechanism is arranged corresponding to the inner wall of the pipe fitting and comprises a plurality of abutting rings arranged at intervals, and the abutting rings move radially through a reducing driving mechanism; an elastic plate mechanism which is adaptive to diameter change is arranged between the adjacent abutting rings in a sliding manner so as to adapt to the diameter change of the abutting rings after movement; a welding gun positioning rod is rotatably arranged in the middle of the inner ring positioning mechanism and comprises a welding gun connecting rod which is radially connected with a welding gun; and the welding gun positioning rod is also connected with a supporting rod which can keep vertical fitting with the wall surface of the pipe after the pipe is reduced. According to the pipe fitting girth welding device, the adjustable inner ring positioning mechanism which is attached to the inner wall of the hanging piece is arranged, so that a welding gun can be effectively arranged in the pipe fitting, and the welding quality is guaranteed.
Description
Technical Field
The invention relates to the technical field of pipeline processing equipment, in particular to a pipe fitting girth welding device.
Background
Pipe girth welding is a common type of welding in the welding art. The circular seams are generally divided into inner circular seams and outer circular seams. Most circular seam welder systems currently on the market weld external circular seams with the general positioning of the internal lumen of the pipe. However, for part of pipe fittings, especially for pipe fittings with larger diameters, the inside and the outside of the pipe fittings need to be welded so as to ensure the strength after welding, and meanwhile, the inner circular seams of the pipelines in the pipes are mostly welded manually, so that the welding quality can not be ensured; for the intraductal welding, can not effectively fix the butt welder, for dysmorphism piece, like oval pipe fitting, conventional equipment is difficult to fix a position.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, one object of the present invention is to provide a pipe girth welding device, which is provided with an inner ring positioning mechanism that is adjustable and attached to the inner wall of a hanger, so as to effectively arrange a welding gun inside a pipe and ensure welding quality.
The technical scheme of the invention is as follows:
a pipe fitting girth welding device comprises a base, wherein a power mechanism for driving a pipe fitting to rotate is arranged on the base; an inner ring positioning mechanism is arranged corresponding to the inner wall of the pipe fitting and comprises a plurality of abutting rings arranged at intervals, and the abutting rings move radially through a reducing driving mechanism; an elastic plate mechanism which is adaptive to diameter change is arranged between the adjacent abutting rings in a sliding mode so as to adapt to diameter change after the abutting rings move; a welding gun positioning rod is rotatably arranged in the middle of the inner ring positioning mechanism and comprises a welding gun connecting rod which is radially connected with a welding gun; and the welding gun positioning rod is also connected with a supporting rod which can keep vertical fitting with the wall surface of the pipe after the pipe is reduced.
Furthermore, power unit is including setting up the drive roller on the base to at the pipe fitting outside corresponding cup joint outer fixed ring, the outer fixed ring rotation of drive roller friction drive.
Furthermore, an installation groove is formed in the periphery of the outer fixing ring, and a radial fixing screw hole is formed in the installation groove and used for clamping and fixing the pipe fitting by the radial screw bolt.
Furthermore, the outer fixing ring is further provided with an axial connecting screw hole penetrating through the mounting groove and used for being connected with an axial positioning screw rod, and the opposite threads of the axial connecting screw hole on the pipe fitting to be welded are opposite, so that the pipe fitting can be attached and fixed oppositely.
Further, reducing drive structure is including setting up the internal fixation post in axle center department, and internal fixation post week side corresponds the butt ring and is fixed with the spliced pole, sets up the spout that link up outwards on the spliced pole, and it is provided with the rack to slide in the spout, rack top and butt intra-annular face fixed connection to install on the spliced pole with rack toothing's drive gear, this drive gear drives via the motor drive who installs on the spliced pole and drives.
Furthermore, an arc-shaped slideway is arranged inside the abutting ring, and the elastic plate mechanism is inserted and can slide in the slideway in an adaptive manner.
Further, the elastic plate mechanism comprises a laminating elastic plate and an extruding elastic plate which are laminated, the arc radius corresponding to the extruding elastic plate is larger than the arc radius corresponding to the laminating elastic plate, and an extruding medium is arranged between the laminating elastic plate and the extruding elastic plate.
Furthermore, a mounting cylinder is fixed at the outer side of the extrusion elastic plate, a spring is arranged in the mounting cylinder to abut against the inner side of the joint elastic plate,
furthermore, the top of the slide way is arranged with a diameter change towards the inner side.
Furthermore, the welding gun positioning rod is connected to the end side of the inner fixing column through a bearing, and the welding gun connecting rod and the welding gun positioning rod are arranged in a forked mode.
Furthermore, electric push rods axially arranged along the rods are arranged on the welding gun connecting rod and the welding gun positioning rod, a welding gun is connected to the electric push rod at the end part of the welding gun connecting rod, and a vertical downward smooth supporting rod is connected to the end part of the electric push rod at the end part of the welding gun positioning rod.
The invention has the following beneficial effects: the butt joint rings capable of moving in the radial direction are arranged, the elastic plate mechanism is arranged between the butt joint rings in a sliding mode, the special-shaped pipe fitting can adapt to the special-shaped pipe fitting such as an oval pipe fitting, meanwhile, the inner ring positioning mechanism is kept attached to the inner wall of the pipe fitting, the welding stability is guaranteed, and the two elastic plates can be driven to deform when the butt joint rings stretch and reduce the diameter; the elastic plates with two different bending amounts are arranged, and the curve at the top of the slide way bends towards the curve at the bottom, so that after the whole inner ring positioning mechanism contracts and changes the diameter, the elastic plates can be enabled to be bent and protruded better.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a circular seam welding device for pipe fittings according to the present invention;
FIG. 2 is a schematic structural view of an outer retaining ring;
FIG. 3 is a schematic cross-sectional view of the inner ring positioning mechanism;
fig. 4 is a partially enlarged view of a portion a in fig. 3.
In the figure: 1-a base; 11-a drive roller; 2-an outer fixing ring; 21-mounting grooves; 22-axial connecting screw holes; 23-radial fixing screw holes; 3-an inner ring positioning mechanism; 31-an abutment ring; 311-a slide; 32-attaching an elastic plate; 33-extruding the elastic plate; 34-mounting the barrel; 35-a spring; 36-internal fixation column; 4-positioning a welding gun; 41-a welding gun linkage; 42-a support bar; 43-rotating column; 5-connecting the column; 51-a chute; 52-a rack; 53-driving the gears.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1, a pipe girth welding device comprises a base 1, wherein a pipe to be processed is arranged on the base 1 after being butted, an outer fixing ring 2 is sleeved outside the pipe to be butted and fixed, and a driving roller 11 is arranged on the base 1 and used for driving the outer fixing ring 2 to rotate in a friction mode; an inner ring positioning mechanism 3 is arranged corresponding to the inner wall of the pipe fitting, the inner ring positioning mechanism 3 comprises a plurality of abutting rings 31 arranged at intervals, and the abutting rings 31 are driven by a reducing driving mechanism to move radially; an elastic plate mechanism which is adaptive to diameter change is arranged between the adjacent abutting rings 31 in a sliding mode so as to adapt to the diameter change of the abutting rings 31 after moving, the elastic plate mechanism can adapt to special-shaped pipe fittings such as oval pipe fittings, meanwhile, the inner ring positioning mechanism 3 can be attached to the inner walls of the pipe fittings, and the welding stability is guaranteed;
in addition, a welding gun positioning rod 4 is arranged in the middle of the inner ring positioning mechanism 3 in a relatively rotating manner, and the welding gun positioning rod 4 comprises a welding gun connecting rod 41 which is connected with a welding gun in a radial direction; the welding gun positioning rod 4 is also connected with a supporting rod 42 which can keep vertical fitting with the wall surface of the pipe after the pipe is reduced.
In particular, the method comprises the following steps of,
as shown in fig. 1 and fig. 2, an installation groove 21 is formed on the peripheral side of the outer fixing ring 2, and a radial fixing screw hole 23 is formed in the installation groove 21 and used for radially screwing a screw to clamp and fix a pipe; the outer fixing ring 2 is further provided with an axial connecting screw hole 22 penetrating through the mounting groove 21 and used for connecting an axial positioning screw rod, and the threads of the axial connecting screw hole 22 on the opposite pipe fitting to be welded are opposite, so that the pipe fitting can be attached and fixed oppositely.
As shown in fig. 3 and 4, the reducing driving structure includes an inner fixing column 36 disposed at the axial center, a connecting column 5 is fixed on the periphery of the inner fixing column 36 corresponding to the abutting ring 31, a chute 51 penetrating outward is formed on the connecting column 5, a rack 52 is slidably disposed in the chute 51, the top of the rack 52 is fixedly connected with the inner side surface of the abutting ring 31, a driving gear 53 meshed with the rack 52 is disposed on the connecting column 5, and the driving gear is driven by a motor mounted on the connecting column 5 (the motor related structure is omitted in the figures).
With further reference to fig. 1, 3 and 4, an arc-shaped slideway 311 is arranged inside the abutting ring 31, and the elastic plate mechanism is inserted and can slide in the slideway 311 in a flexible manner; in order to guarantee protruding deformation that the elastic plate mechanism can be better, its laminating elastic plate 32 and extrusion elastic plate 33 including the laminating setting, the arc radius that extrusion elastic plate 33 corresponds is greater than the arc radius that laminating elastic plate 32 corresponds, and set up extruded medium between the two, high-elastic steel sheet can be selected to its material, in this embodiment, at an extrusion elastic plate 33 outside fixed mounting section of thick bamboo 34, and set up spring 35 in an installation section of thick bamboo 34 in order to lean on laminating elastic plate 32 inboard, when the flexible reducing of butt ring 31, can drive two elastic plate deformations. If for the oval pipe fitting of adaptation, the butt ring 31 shrink of the vertical direction of the regulation of adaptability, the elastic plate adaptability shrink, extrusion elastic plate 33 is bigger because the radius that corresponds, and the deformation volume is littleer, can extrude laminating elastic plate 32 and outwards bend, the inner wall of laminating pipe fitting.
In addition, in order to facilitate the bending of the elastic plate, the top of the slide way 311 is arranged with a diameter varying inward, that is, the curve at the top of the slide way 311 bends toward the curve at the bottom (the radius of the curve at the top is smaller than that at the bottom), so that after the whole inner ring positioning mechanism 3 contracts and varies the diameter, the elastic plate can be better bent and protruded.
As shown in fig. 1 and 3, the welding gun positioning rod 4 is connected to the end side of the inner fixing column 36 through a bearing, the welding gun connecting rod 41 and the welding gun positioning rod 42 are arranged in a forked manner, electric push rods axially arranged along the rod are arranged on both the welding gun connecting rod 41 and the welding gun positioning rod 42, a welding gun is connected to the electric push rod at the end of the welding gun connecting rod 41, a vertical downward smooth support rod is connected to the end of the electric push rod at the end of the welding gun positioning rod 42, the extending distance between the welding gun and the support rod can be adjusted by adjusting the electric push rod, and when the support rod is arranged, the support rod can be extended and retracted adaptively when the pipe rotates, so that the stability of a welding point of the welding gun is ensured.
When the welding operation is carried out, after the pipe fitting is fixed, the position of the abutting ring 31 in the inner ring positioning mechanism 3 is adjusted in the radial direction to adapt to the size and the shape of the inner wall of the pipe fitting (slightly smaller than the size of the inner cavity of the pipe fitting), and then the abutting ring 31 is further adjusted in the outer direction, so that the whole pipe fitting is firmly fixed in the position to be welded, and the subsequent welding is facilitated.
In the present application, the structures and the connection relations that are not described in detail are all the prior art, and the structures and the principles thereof are known in the prior art and are not described herein again.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. A pipe fitting girth welding device comprises a base, wherein a power mechanism for driving a pipe fitting to rotate is arranged on the base; correspond the pipe fitting inner wall and be provided with inner ring positioning mechanism, its characterized in that: the inner ring positioning mechanism comprises a plurality of abutting rings which are arranged at intervals, and the abutting rings move radially through the reducing driving mechanism; an elastic plate mechanism which is adaptive to diameter change is arranged between the adjacent abutting rings in a sliding manner so as to adapt to the diameter change of the abutting rings after movement; a welding gun positioning rod is rotatably arranged in the middle of the inner ring positioning mechanism and comprises a welding gun connecting rod which is radially connected with a welding gun; and the welding gun positioning rod is also connected with a supporting rod which can keep vertical fitting with the wall surface of the pipe after the pipe is reduced.
2. The pipe girth welding apparatus of claim 1, wherein: the power mechanism comprises a driving roller arranged on the base, an outer fixing ring is correspondingly sleeved on the outer side of the pipe fitting, and the driving roller drives the outer fixing ring to rotate in a friction mode.
3. The pipe girth welding apparatus of claim 1, wherein: the periphery of the outer fixing ring is provided with an installation groove, and a radial fixing screw hole is formed in the installation groove and used for clamping and fixing the pipe fitting by a radial screw bolt.
4. The pipe girth welding apparatus of claim 3, wherein: the outer fixing ring is further provided with an axial connecting screw hole penetrating through the mounting groove and used for connecting an axial positioning screw rod, and the opposite threads of the axial connecting screw hole on the pipe fitting to be welded are opposite, so that the pipe fitting can be attached and fixed oppositely.
5. The pipe girth welding apparatus of claim 1, wherein: the reducing driving structure comprises an inner fixing column arranged at the axis center, a connecting column is fixed on the periphery of the inner fixing column corresponding to the butt ring, a chute which is communicated outwards is formed in the connecting column, a rack is arranged in the chute in a sliding mode, the top of the rack is fixedly connected with the inner side face of the butt ring, a driving gear meshed with the rack is arranged on the connecting column, and the driving gear drives to drive through a motor arranged on the connecting column.
6. The pipe girth welding apparatus of claim 1, wherein: an arc-shaped slideway is arranged inside the abutting ring, and the elastic plate mechanism is inserted and can slide in the slideway in an adaptive manner.
7. The pipe girth welding apparatus of claim 6, wherein: the elastic plate mechanism comprises a laminating elastic plate and an extruding elastic plate which are laminated, the arc radius corresponding to the extruding elastic plate is larger than the arc radius corresponding to the laminating elastic plate, and an extruding medium is arranged between the laminating elastic plate and the extruding elastic plate.
8. The pipe girth welding apparatus of claim 7, wherein: the installation cylinder is fixedly arranged on the outer side of the extrusion elastic plate, and a spring is arranged in the installation cylinder to abut against the inner side of the joint elastic plate.
9. The pipe girth welding apparatus of claim 6, wherein: the top of the slide way is arranged with diameter change towards the inner side.
10. The pipe girth welding apparatus of any one of claims 5 to 9, wherein: the welding gun positioning rod is connected to the end side of the inner fixing column through a bearing, and the welding gun connecting rod and the welding gun positioning rod are arranged in a forked manner; electric push rods axially arranged along the rods are arranged on the welding gun connecting rod and the welding gun positioning rod, a welding gun is connected to the electric push rod at the end part of the welding gun connecting rod, and a vertical downward smooth support rod is connected to the end part of the electric push rod at the end part of the welding gun positioning rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210302196.4A CN114619166A (en) | 2022-03-24 | 2022-03-24 | Pipe fitting girth welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210302196.4A CN114619166A (en) | 2022-03-24 | 2022-03-24 | Pipe fitting girth welding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114619166A true CN114619166A (en) | 2022-06-14 |
Family
ID=81904780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210302196.4A Pending CN114619166A (en) | 2022-03-24 | 2022-03-24 | Pipe fitting girth welding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114619166A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116944681A (en) * | 2023-09-19 | 2023-10-27 | 迪森(常州)能源装备有限公司 | Automatic pressure-resistant welding device and method for circumferential seams of pressure containers |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85105922A (en) * | 1985-08-05 | 1987-02-25 | 麦克德莫特国际公司 | The weld-supporting mechanism of welding apparatus in pipe |
| CN1035974A (en) * | 1988-11-28 | 1989-10-04 | 王永军 | Outer monitoring automatic welding machine for inner ring seam welding of container |
| JPH06281057A (en) * | 1993-03-29 | 1994-10-07 | Chiyoda Corp | Pipe circumferential joint welding method and pipe fit-up device |
| JPH06344140A (en) * | 1993-06-07 | 1994-12-20 | Chiyoda Corp | Automatic piping welding equipment |
| CN107553023A (en) * | 2017-10-24 | 2018-01-09 | 无锡智谷锐拓技术服务有限公司 | A kind of large-scale pipeline inwall welding tooling |
| CN210305150U (en) * | 2019-07-05 | 2020-04-14 | 上海衡络市政工程有限公司 | Pipeline rounding device convenient to adjust internal diameter |
| CN212043236U (en) * | 2020-04-03 | 2020-12-01 | 宣城金盾防火设备有限公司 | Automatic inner ring welding device for fire extinguisher cylinder body bottom sealing |
| CN112720971A (en) * | 2020-12-31 | 2021-04-30 | 萍乡市庆通新型建材有限公司 | Inner support mold core for cable pipe production |
| CN215316499U (en) * | 2021-04-06 | 2021-12-28 | 中国葛洲坝集团机械船舶有限公司 | Movable pressure steel pipe welding heating device |
| CN215967072U (en) * | 2021-10-13 | 2022-03-08 | 金能化学(青岛)有限公司 | Pipeline welding auxiliary device |
-
2022
- 2022-03-24 CN CN202210302196.4A patent/CN114619166A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85105922A (en) * | 1985-08-05 | 1987-02-25 | 麦克德莫特国际公司 | The weld-supporting mechanism of welding apparatus in pipe |
| CN1035974A (en) * | 1988-11-28 | 1989-10-04 | 王永军 | Outer monitoring automatic welding machine for inner ring seam welding of container |
| JPH06281057A (en) * | 1993-03-29 | 1994-10-07 | Chiyoda Corp | Pipe circumferential joint welding method and pipe fit-up device |
| JPH06344140A (en) * | 1993-06-07 | 1994-12-20 | Chiyoda Corp | Automatic piping welding equipment |
| CN107553023A (en) * | 2017-10-24 | 2018-01-09 | 无锡智谷锐拓技术服务有限公司 | A kind of large-scale pipeline inwall welding tooling |
| CN210305150U (en) * | 2019-07-05 | 2020-04-14 | 上海衡络市政工程有限公司 | Pipeline rounding device convenient to adjust internal diameter |
| CN212043236U (en) * | 2020-04-03 | 2020-12-01 | 宣城金盾防火设备有限公司 | Automatic inner ring welding device for fire extinguisher cylinder body bottom sealing |
| CN112720971A (en) * | 2020-12-31 | 2021-04-30 | 萍乡市庆通新型建材有限公司 | Inner support mold core for cable pipe production |
| CN215316499U (en) * | 2021-04-06 | 2021-12-28 | 中国葛洲坝集团机械船舶有限公司 | Movable pressure steel pipe welding heating device |
| CN215967072U (en) * | 2021-10-13 | 2022-03-08 | 金能化学(青岛)有限公司 | Pipeline welding auxiliary device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116944681A (en) * | 2023-09-19 | 2023-10-27 | 迪森(常州)能源装备有限公司 | Automatic pressure-resistant welding device and method for circumferential seams of pressure containers |
| CN116944681B (en) * | 2023-09-19 | 2023-11-21 | 迪森(常州)能源装备有限公司 | Automatic pressure-resistant welding device and method for circumferential seams of pressure containers |
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