CN210024051U - Automatic pipeline cutting machine - Google Patents
Automatic pipeline cutting machine Download PDFInfo
- Publication number
- CN210024051U CN210024051U CN201920382041.XU CN201920382041U CN210024051U CN 210024051 U CN210024051 U CN 210024051U CN 201920382041 U CN201920382041 U CN 201920382041U CN 210024051 U CN210024051 U CN 210024051U
- Authority
- CN
- China
- Prior art keywords
- cutting machine
- module
- cutting
- frame
- pipeline
- 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.)
- Expired - Fee Related
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 153
- 230000007246 mechanism Effects 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 8
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 229910001882 dioxygen Inorganic materials 0.000 claims description 3
- 238000003698 laser cutting Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- QFXZANXYUCUTQH-UHFFFAOYSA-N ethynol Chemical group OC#C QFXZANXYUCUTQH-UHFFFAOYSA-N 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Arc Welding In General (AREA)
Abstract
The utility model provides a pipeline automatic cutout machine, including the centre frame of frame, fixed pipeline, fixed or loosen the centre gripping module of pipeline, drive the pipeline along the rotatory module of its axis rotation, the location module of control pipeline position, the cutting machine of cutting pipeline and the lift module of control cutting machine cutting position, centre frame, centre gripping module, rotatory module, location module, lift module set up respectively in the frame, the central axis perpendicular to horizontal plane of centre frame, the coaxial setting of centre frame, centre gripping module, the centre frame is located the top of centre gripping module, centre frame, centre gripping module respectively with frame swivelling joint. The utility model has the advantages that: the automatic cutting of the pipeline is realized, the production efficiency is improved, and the labor intensity is reduced.
Description
Technical Field
The utility model relates to a cutting machine especially relates to a pipeline automatic cutout machine.
Background
In the pipe fitting cutting process, the common modes include manual cutting and semi-automatic cutting by a cutting machine.
The manual cutting is flexible and convenient, but the manual cutting quality is poor, the size error is large, the material waste is large, the subsequent processing workload is large, meanwhile, the labor condition is severe, and the production efficiency is low.
Other types of semi-automatic cutting machines reduce the labor intensity of workers, but have simple functions and are only suitable for cutting parts with more regular shapes. Manual cutting and semi-automatic cutting modes are used in some small and medium-sized enterprises and even in some large-sized enterprises in China, and the manual cutting and semi-automatic cutting modes are high in labor intensity and low in production efficiency.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides an automatic pipeline cutting machine.
The utility model provides an automatic pipeline cutting machine, which comprises a frame, a center frame for fixing a pipeline, a clamping module for fixing or loosening the pipeline, a rotating module for driving the pipeline to rotate along the axis, a positioning module for controlling the position of the pipeline, a cutting machine for cutting the pipeline and a lifting module for controlling the cutting position of the cutting machine, wherein the center frame, the clamping module, the rotating module, the positioning module and the lifting module are respectively arranged on the frame, the central axis of the center frame is vertical to the horizontal plane, the center frame and the clamping module are coaxially arranged, the center frame is positioned above the clamping module, the center frame and the clamping module are respectively rotationally connected with the frame, the lifting module is connected with the cutting machine, the lifting module controls the cutting machine to move up and down along the central axis of the center frame, the positioning module comprises a positioning lifting mechanism and a positioning block connected with the positioning lifting mechanism, the positioning lifting mechanism controls the positioning block to move up and down along the central axis of the central frame, and the cutting machine and the positioning block are both positioned below the clamping module.
As a further improvement of the utility model, the centre gripping module includes the pneumatic clamping jaw of outer ring fixing base, interior ring rolling seat, pneumatic chuck and centre gripping pipeline, the axis of outer ring fixing base, the axis of interior ring rolling seat all with the coincidence of the central axis of centre frame, interior ring rolling seat is located within the outer ring fixing base, outer ring fixing base with the frame is connected, the excircle side of interior ring rolling seat pass through the bearing with the interior side of circle swivelling joint of outer ring fixing base, interior ring rolling seat with pneumatic chuck connects, pneumatic chuck with pneumatic clamping jaw connects.
As a further improvement of the present invention, the pneumatic clamping jaw has at least three and follows the circumferential interval of the central axis of the central frame is evenly set.
As a further improvement of the utility model, rotatory module includes motor, motor support, driving gear and driven gear, the motor support with outer ring fixing base is connected, the motor sets up on the motor support, the motor with driving gear connection, the driving gear with driven gear meshes, driven gear with air chuck connects.
As a further improvement of the present invention, the axis of the driven gear coincides with the central axis of the center frame.
As a further improvement, the frame is connected with a material receiving box, the material receiving box is located under the clamping module.
As a further improvement, the cutting machine includes cutting machine main part, burning torch support, burning torch, adjusting hand wheel and cutting torch, the burning torch support with the lift module is connected, the cutting machine main part with the burning torch is connected, the burning torch sets up on the burning torch support, the burning torch passes through adjusting hand wheel with the cutting torch is connected.
As a further improvement, the cutting torch is connected with an adjusting rack, the adjusting hand wheel is connected with an adjusting gear, the adjusting gear with the adjusting rack meshes, the cutting axis perpendicular to of cutting torch the central axis of centre frame.
As a further improvement, the cutting machine is any one of an oxygen acetylene cutting machine, an oxygen gas cutting machine, a laser cutting machine, a high-pressure water jet cutting machine and a plasma cutting machine.
As a further improvement, the automatic pipeline cutting machine further comprises an auxiliary blowing device for blowing off the pipeline to be cut.
The utility model has the advantages that: through the scheme, the automatic cutting of the pipeline is realized, the production efficiency is improved, and the labor intensity is reduced.
Drawings
Fig. 1 is a schematic view of the automatic pipe cutting machine of the present invention.
Fig. 2 is a schematic view of another view angle of the automatic pipe cutting machine according to the present invention.
Fig. 3 is a schematic partial sectional view of the automatic pipe cutting machine of the present invention.
Fig. 4 is a schematic diagram of the automatic pipe cutting machine according to the present invention before positioning.
Fig. 5 is a schematic diagram of the automatic pipe cutting machine according to the present invention after the pipe is lowered and positioned.
Fig. 6 is a schematic diagram of the automatic pipe cutting machine according to the present invention.
Detailed Description
The present invention will be further described with reference to the following description and embodiments.
As shown in fig. 1 to 6, an automatic pipe cutting machine includes a frame 1, a center frame 6 for fixing a pipe 100, a clamping module 29 for fixing or loosening the pipe 100, a rotation module 30 for driving the pipe 100 to rotate along its axis, a positioning module 4 for controlling the position of the pipe, a cutting machine 3 for cutting the pipe 100, and a lifting module 5 for controlling the cutting position of the cutting machine 3, wherein the center frame 6, the clamping module 29, the rotation module 30, the positioning module 4, and the lifting module 5 are respectively disposed on the frame 1, the central axis of the center frame 6 is perpendicular to the horizontal plane, the center frame 6 and the clamping module 29 are coaxially disposed, the center frame 6 is located above the clamping module 29, the center frame 6 and the clamping module 29 are respectively rotatably connected to the frame 1, the lifting module 5 is connected to the cutting machine 3, and the lifting module 5 controls the cutting machine 3 to move up and down along the central axis of the center frame 6, the positioning module 4 comprises a positioning lifting mechanism and a positioning block 11 connected with the positioning lifting mechanism, the positioning lifting mechanism controls the positioning block 11 to move up and down along the central axis of the central frame 6, and the cutting machine 3 and the positioning block 11 are both positioned below the clamping module 29.
As shown in fig. 1 to 6, the positioning and lifting mechanism can be a common screw rod and slider mechanism 32 to realize lifting movement, a motor 31 can provide lifting power, and the lifting module 5 adopts the same structure as the positioning and lifting mechanism to realize lifting movement.
As shown in fig. 1 to 6, the clamping module 29 includes an outer ring fixing seat 26, an inner ring rotating seat 25, a pneumatic chuck 23, and a pneumatic clamping jaw 22 for clamping the pipeline 100, the axis of the outer ring fixing seat 26 and the axis of the inner ring rotating seat 25 both coincide with the central axis of the central frame 6, the inner ring rotating seat 25 is located inside the outer ring fixing seat 26, the outer ring fixing seat 26 is connected to the frame 1, the outer circumferential side of the inner ring rotating seat 25 is rotationally connected to the inner circumferential side of the outer ring fixing seat 26 through a bearing 27, the inner ring rotating seat 25 is connected to the pneumatic chuck 23, the pneumatic chuck 23 is connected to the pneumatic clamping jaw 22, the inner ring rotating seat 25 is also called a hollow shaft, and the inner ring rotating seat 25 is provided with a circular nut 28.
As shown in fig. 1 to 6, the pneumatic clamping jaws 22 are at least three and are uniformly spaced along the circumferential direction of the central axis of the center frame 6.
As shown in fig. 1 to 6, the rotating module 30 includes a motor 12, a motor support 13, a driving gear 19 and a driven gear 24, the motor support 13 is connected to the outer ring fixing seat 26, the motor 12 is disposed on the motor support 13, the motor 12 is connected to the driving gear 19 through a coupling and a gear shaft 20, a retainer ring 21 is installed on the gear shaft 20, the driving gear 19 is engaged with the driven gear 24, the driven gear 24 is connected to the air chuck 23, the driving gear 19 is installed on the gear support 16 through a bearing 15, a bearing seat 17 and a gasket 18, the driving gear 19 is a pinion, and the driven gear 24 is a bull gear.
As shown in fig. 1 to 6, the axis of the driven gear 24 coincides with the central axis of the center frame 6.
As shown in fig. 1 to 6, the rack 1 is connected with a material receiving box 2, and the material receiving box 2 is located right below the clamping module 29.
As shown in fig. 1 to 6, the cutting machine 3 includes a cutting machine main body, a cutting torch support 7, a cutting torch 8, an adjusting hand wheel 10 and a cutting torch 9, the cutting torch support 7 is connected to the lifting module 5, the cutting machine main body is connected to the cutting torch 8, the cutting torch 8 is disposed on the cutting torch support 7, the cutting torch 8 is connected to the cutting torch 9 through the adjusting hand wheel 10, and a cutting axis of the cutting torch 9 is perpendicular to a central axis of the center frame 6.
As shown in fig. 1 to 6, the cutting torch 9 is connected with an adjusting rack, the adjusting handwheel 10 is connected with an adjusting gear, the adjusting gear is engaged with the adjusting rack, the distance between the cutting torch 9 and the pipeline 100 can be adjusted through the adjusting handwheel 10, the adjusting rack is provided with scales, the adjusting handwheel 10 is rotated to enable the adjusting rack to move transversely, and the distance between the cutting torch 9 and the pipeline 100 can be determined through scale values.
As shown in fig. 1 to 6, the cutting machine 3 is any one of an oxyacetylene cutting machine, an oxygen gas cutting machine, a laser cutting machine, a high-pressure water jet cutting machine, and a plasma cutting machine.
As shown in fig. 1 to 6, the plasma cutting machine is preferably adopted in the present invention, the plasma has the characteristics of wide cutting range (all metal materials can be cut), fast cutting speed, high working efficiency, etc., the future development direction lies in the improvement of plasma power technology, the matching problem of the numerical control system and the plasma cutting, and thicker plates can be cut if the power of the power supply is improved; the perfection and improvement of the fine plasma technology can improve the cutting speed, the section quality and the cutting precision; the perfection and improvement of the numerical control system are suitable for plasma cutting, and the working efficiency and the cutting quality can be effectively improved.
As shown in fig. 1 to 6, the automatic pipe cutting machine further comprises an auxiliary blowing device for blowing off the cut pipes, and the cut pipes can be ensured to fall into the material receiving box 2 by blowing air through the auxiliary blowing device.
The utility model provides a pipeline automatic cutting machine, during the operation, drive locating piece 11 with location module 4 and move down required (cutting length) position, pipeline 100 puts into pneumatic chuck 23 through centre frame 6, pneumatic clamping jaw 22 presss from both sides steady pipeline 100, cutting torch 9 aligns the central line of pipeline 100, adjusting hand wheel 10 has adjusted the distance of cutting torch 9 and pipeline 100, start plasma cutting machine, during the cutting, lean on the purpose that cutting torch 9 goes up and down and pipeline 100 rotates and realize the curve cutting, the rotation of pipeline 100 is realized by rotatory module 30, the lift of cutting torch 9 is realized by lift module 5; after the cutting is finished, the pipeline 100 drops into the material receiving box 2, the positioning module 4 drives the positioning block 11 to support the bottom of the pipeline 100 again, the pneumatic clamping jaw 22 is loosened, the positioning module 4 drives the positioning block 11 to move to a required (cutting length) position to cut the next pipe fitting, and the process is repeated so as to realize automatic clamping, positioning, cutting and blanking.
The utility model provides an automatic pipeline cutting machine can realize automatic clamping, location, cutting, blanking, adopts vertical pipe vertical clamping, and cutting torch 9 is the cutting of horizontal direction, and the oxidation that remains during the cutting cuts the sediment and directly drops in the material receiving box (can not glue the pipe internal surface), because the material receiving box 2 has far away distance from cutting torch 9, cuts the sediment and can cool off rapidly, avoids gluing to the pipe surface, and the pipe is rotatory at arbitrary angle and has not influenced cutting surface quality, avoids the tempering phenomenon to take place; compared with manual and semi-automatic cutting modes, the automatic cutting mode can effectively improve the efficiency and the cutting quality of the pipe fitting cutting, and reduce the labor intensity of operators; the curve cutting machine is suitable for cutting such inertia line holes as cylindrical orthogonality, oblique intersection, eccentric intersection and the like, square holes and elliptical holes on various pipes, and can cut the inertia lines intersected with the pipe ends. The equipment of the type is widely applied to the industrial departments of metal structural member production, electric power equipment, boiler industry, petroleum, chemical industry and the like; the utility model discloses an improve, realize automatic clamping, location, cutting, blanking. The automatic control of the displacement and the speed is flexible, universal and efficient automatic production equipment, and has the characteristics of reliable work, high speed, high repeatability precision and the like.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (10)
1. The utility model provides a pipeline automatic cutout machine which characterized in that: the pipe cutting machine comprises a frame, a center frame for fixing a pipe, a clamping module for fixing or loosening the pipe, a rotating module for driving the pipe to rotate along the axis of the pipe, a positioning module for controlling the position of the pipe, a cutting machine for cutting the pipe and a lifting module for controlling the cutting position of the cutting machine, wherein the center frame, the clamping module, the rotating module, the positioning module and the lifting module are respectively arranged on the frame, the central axis of the center frame is vertical to the horizontal plane, the center frame and the clamping module are coaxially arranged, the center frame is positioned above the clamping module, the center frame and the clamping module are respectively and rotatably connected with the frame, the lifting module is connected with the cutting machine, the lifting module controls the cutting machine to move up and down along the central axis of the center frame, the positioning module comprises a positioning lifting mechanism and a positioning block connected with the positioning lifting mechanism, the positioning lifting mechanism controls the positioning block to move up and down along the central axis of the central frame, and the cutting machine and the positioning block are both positioned below the clamping module.
2. The automatic pipe cutting machine according to claim 1, wherein: the centre gripping module includes the pneumatic clamping jaw of outer ring fixing base, interior ring rotating seat, pneumatic chuck and centre gripping pipeline, the axis of outer ring fixing base, the axis of interior ring rotating seat all with the central axis coincidence of centre frame, interior ring rotating seat is located within the outer ring fixing base, outer ring fixing base with the frame is connected, the excircle side of interior ring rotating seat pass through the bearing with the interior side swivelling joint of outer ring fixing base, interior ring rotating seat with pneumatic chuck connects, pneumatic chuck with pneumatic clamping jaw connects.
3. The automatic pipe cutting machine according to claim 2, wherein: the pneumatic clamping jaws are at least three and are uniformly arranged along the circumferential direction of the central axis of the central frame at intervals.
4. The automatic pipe cutting machine according to claim 2, wherein: the rotary module comprises a motor, a motor support, a driving gear and a driven gear, the motor support is connected with the outer circular ring fixing seat, the motor is arranged on the motor support, the motor is connected with the driving gear, the driving gear is meshed with the driven gear, and the driven gear is connected with the pneumatic chuck.
5. The automatic pipe cutting machine according to claim 4, wherein: the axis of the driven gear coincides with the central axis of the center frame.
6. The automatic pipe cutting machine according to claim 1, wherein: the frame is connected with and connects the workbin, it is located to connect the workbin under the centre gripping module.
7. The automatic pipe cutting machine according to claim 1, wherein: the cutting machine comprises a cutting machine main body, a cutting torch support, a cutting torch, an adjusting hand wheel and a cutting torch, wherein the cutting torch support is connected with the lifting module, the cutting machine main body is connected with the cutting torch, the cutting torch is arranged on the cutting torch support, and the cutting torch passes through the adjusting hand wheel and is connected with the cutting torch.
8. The automatic pipe cutting machine according to claim 7, wherein: the cutting torch is connected with an adjusting rack, the adjusting hand wheel is connected with an adjusting gear, the adjusting gear is meshed with the adjusting rack, and the cutting axis of the cutting torch is perpendicular to the central axis of the central frame.
9. The automatic pipe cutting machine according to claim 1, wherein: the cutting machine is any one of an oxygen acetylene cutting machine, an oxygen gas cutting machine, a laser cutting machine, a high-pressure water jet cutting machine and a plasma cutting machine.
10. The automatic pipe cutting machine according to claim 1, wherein: the automatic pipeline cutting machine further comprises an auxiliary blowing device for blowing off the cut pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920382041.XU CN210024051U (en) | 2019-03-25 | 2019-03-25 | Automatic pipeline cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920382041.XU CN210024051U (en) | 2019-03-25 | 2019-03-25 | Automatic pipeline cutting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210024051U true CN210024051U (en) | 2020-02-07 |
Family
ID=69356246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920382041.XU Expired - Fee Related CN210024051U (en) | 2019-03-25 | 2019-03-25 | Automatic pipeline cutting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210024051U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746541A (en) * | 2019-03-25 | 2019-05-14 | 惠州连硕科技有限公司 | Automatic pipeline cutting machine |
| CN111644735A (en) * | 2020-06-22 | 2020-09-11 | 中国科学院合肥物质科学研究院 | Pipeline cutting robot |
| CN112045429A (en) * | 2020-09-07 | 2020-12-08 | 董晓晓 | Efficient treatment method based on pipeline machining |
| CN113770729A (en) * | 2021-09-13 | 2021-12-10 | 泰兴市九羊机械设备有限公司 | Gear casting pouring gate cutting device with automatic positioning function |
-
2019
- 2019-03-25 CN CN201920382041.XU patent/CN210024051U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746541A (en) * | 2019-03-25 | 2019-05-14 | 惠州连硕科技有限公司 | Automatic pipeline cutting machine |
| CN111644735A (en) * | 2020-06-22 | 2020-09-11 | 中国科学院合肥物质科学研究院 | Pipeline cutting robot |
| CN111644735B (en) * | 2020-06-22 | 2022-07-08 | 中国科学院合肥物质科学研究院 | A pipe cutting robot |
| CN112045429A (en) * | 2020-09-07 | 2020-12-08 | 董晓晓 | Efficient treatment method based on pipeline machining |
| CN113770729A (en) * | 2021-09-13 | 2021-12-10 | 泰兴市九羊机械设备有限公司 | Gear casting pouring gate cutting device with automatic positioning function |
| CN113770729B (en) * | 2021-09-13 | 2024-03-29 | 泰兴市九羊机械设备有限公司 | Gear casting gate cutting device with automatic positioning function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210024051U (en) | Automatic pipeline cutting machine | |
| KR101407327B1 (en) | A pipe cutting apparatus having the wireless communication for tool control | |
| CN109746541A (en) | Automatic pipeline cutting machine | |
| CN105127657A (en) | Arc and shaft repair welding machine | |
| CN101767214B (en) | Special equipment for machining inner bore of primary loop piping elbow in nuclear power plant | |
| CN202825486U (en) | Thin-wall round pipe intersecting line grinding and cutting device | |
| CN205996352U (en) | Circular cutter | |
| CN201437185U (en) | Pipeline groove processing device | |
| CN112276397A (en) | Gas holder straight seam rapid welding device is used in production of twin-screw air compressor machine | |
| CN202412041U (en) | High-precision rotary positioning workbench | |
| CN101530929A (en) | A boring machine | |
| CN205464709U (en) | Automatic flame cutting machine of elbow pipe end | |
| CN114178650A (en) | Cutting device and cutting method for transition groove in steel pipe intersecting line | |
| CN205032897U (en) | A circular arc and an axle type repairing welding are met sb. at airport | |
| CN115780961B (en) | Intersecting line cutting machine for pipe welding | |
| CN214721829U (en) | Screw rod supports production process equipment spot welding device | |
| CN2576387Y (en) | Boring machine for air-valve seat | |
| CN204486890U (en) | Ordinary gantry planer inner arc shaping device | |
| CN205324952U (en) | Full position pipeline weldment work station | |
| CN211102328U (en) | A operation equipment for elbow cutting is used | |
| CN211052946U (en) | Circular cutting device | |
| CN211331392U (en) | Numerical control blind hole boring machine | |
| CN209773470U (en) | Pipe tube plate internal contraction type combined groove machining device | |
| CN201685007U (en) | Automatic cutting machine of flange disc | |
| CN111922573B (en) | Multi-head rotary welding machine for cement grinding disc |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 Termination date: 20210325 |