CN109465692B - Polishing device for building pipe materials - Google Patents
Polishing device for building pipe materials Download PDFInfo
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- CN109465692B CN109465692B CN201811534686.7A CN201811534686A CN109465692B CN 109465692 B CN109465692 B CN 109465692B CN 201811534686 A CN201811534686 A CN 201811534686A CN 109465692 B CN109465692 B CN 109465692B
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- 238000005498 polishing Methods 0.000 title claims abstract description 119
- 239000000463 material Substances 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 44
- 239000010959 steel Substances 0.000 claims abstract description 44
- 230000007704 transition Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 86
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 description 7
- 230000003068 static effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to the field of buildings, and particularly discloses a polishing device for building pipe materials, which comprises a rack, a polishing unit and a sliding block fixedly mounted on the rack, wherein a mounting hole is horizontally formed in the sliding block, the polishing unit comprises a plurality of rotatable polishing rings and a plurality of connecting pipes, one end of each connecting pipe is coaxially and rotatably connected with the mounting hole of the sliding block, the other end of each connecting pipe is coaxially and fixedly connected with an inner ring of each polishing ring, the inner walls of the connecting pipes and the inner rings of the polishing rings form a polishing hole, polishing sheets are laid on the inner walls of the polishing holes, and the polishing sheets are in transition fit with the outer walls of steel pipes. Grinding device in this scheme can carry out the efficient to the burr on the steel pipe surface and polish.
Description
Technical Field
The invention belongs to the field of buildings, and particularly relates to a polishing device for building pipe materials.
Background
The steel pipe has good mechanical properties and is widely applied to the field of building materials. In recent years, with the development and innovation of technology, the demand of people for steel pipes is expanding, and the requirements for the quality of the steel pipes are increasing. Because steel pipe forges the back, often adhere to on the surface of steel pipe and have a lot of burrs, when a plurality of steel pipes are stacked together, burr on the steel pipe surface can take place the scraping to the surface of other steel pipes, leads to the surface of steel pipe to be destroyed, can't satisfy market demand.
Present burr treatment mode is generally to use file or friction disc to clear up the surface of steel pipe with the manual work, and then leads to the process of clearance very slow, seriously influences the efficiency of production and processing.
Disclosure of Invention
The invention aims to provide a polishing device capable of efficiently polishing burrs on the outer surface of a steel pipe.
In order to achieve the above object, the basic scheme of the invention is as follows: the utility model provides a grinding device of building tubular material, which comprises a frame, still including the slider of polishing unit and fixed mounting in the frame, the slider is improved level and is provided with the mounting hole, the unit of polishing includes a plurality of rotatable rings of polishing and a plurality of connecting pipe, the one end of connecting pipe is connected with the coaxial rotation of mounting hole of slider, the other end of connecting pipe and the coaxial fixed connection of the inner circle of ring of polishing, the inner wall of connecting pipe and the inner circle of ring of polishing enclose into the hole of polishing, the inner wall upper berth in hole of polishing is equipped with the polishing piece, the outer wall transition fit of polishing piece and steel pipe.
The principle and advantages of the basic scheme are as follows: when the burrs on the outer wall of the steel pipe are polished, the polishing ring is rotated firstly, the polishing ring can drive the connecting pipe to rotate, and the connecting pipe is connected with the mounting hole of the sliding block in a rotating mode, so that the sliding block can limit the rotation of the connecting pipe and the polishing ring, the rotation of the connecting pipe and the polishing ring is kept stable, and the position of the steel pipe in the polishing process can be kept stable.
The inner wall of connecting pipe and the inner circle of ring of polishing enclose into the hole of polishing, the steel pipe passes the hole of polishing when polishing, and steel pipe and the downthehole piece transition fit of polishing of laying of polishing, and then guarantee the steel pipe and the abundant contact of the piece of polishing, when ring and connecting pipe rotate of polishing, grasp the both ends of steel pipe earlier, the steel pipe keeps static for the piece of polishing, the piece of polishing polishes the burr on the outer wall of steel pipe, and the circumference of steel pipe is by comprehensive parcel this moment, the piece of polishing can carry out comprehensive polishing to the outer wall of steel pipe.
After one section of the steel pipe is polished, the steel pipe can be moved along the axial direction of the polishing hole, so that the next section of the steel pipe can be polished conveniently, and polishing of the steel pipe can be controlled in a segmented mode.
In conclusion, the polishing device is provided with the polishing ring, the connecting pipe and the polishing sheet, the length of the polishing hole is longer after the polishing ring is connected with the connecting pipe, the polishing sheet is convenient to arrange, and the position relation between the polishing sheet and the outer wall of the steel pipe can ensure that the outer wall of the steel pipe is fully polished by the polishing sheet; simultaneously, the polishing piece rotates under the driving of the polishing ring and the connecting pipe, the polishing piece can automatically polish the steel pipe, and the polishing efficiency is high and the polishing speed is high.
The polishing device is characterized by further comprising a plurality of transmission rings, a plurality of transmission teeth are arranged on the outer ring of each polishing ring, the transmission rings are coaxially sleeved outside the polishing rings, a gap is formed between each transmission ring and each polishing ring, a plurality of hook teeth are hinged to one side, close to the polishing rings, of each transmission ring, one side of each hook tooth is opposite to the inner wall of each transmission ring, a tension spring is fixedly installed on one side, close to the inner wall of each transmission ring, of each hook tooth, and the other end of each tension spring is fixedly connected with the inner wall of each transmission ring; the hook teeth are located between the two adjacent transmission teeth, one side, close to the tension spring, of the hook teeth can be abutted to one side of the transmission teeth, and one side, far away from the tension spring, of the hook teeth can be in sliding contact with the other side of the transmission teeth.
The transmission ring can drive the grinding ring to rotate, the transmission of the torque force is realized through the hook teeth and the transmission teeth, when one side of the hook teeth can be abutted against one side of the transmission teeth, the tension spring is stretched by the hook teeth, the hook teeth can drive the transmission teeth to synchronously rotate, and then the transmission ring drives the grinding ring to synchronously rotate; when one side of the hook tooth, which is far away from the tension spring, can be in sliding contact with the other side of the transmission gear, the hook tooth rotates around the hinged position with the transmission ring, the tension spring between the hook tooth and the transmission ring is compressed, so that one side of the hook tooth, which is far away from the tension spring, slides over the other side of the transmission gear, the transmission ring is convenient to rotate again to drive the polishing ring to rotate, and the rotation angle of the transmission ring can be reduced at the moment, and the effect of driving the polishing ring to rotate can also be achieved; but this in-process intermittent type of ring that polishes rotates, can convey the steel pipe when stopping, and the steel pipe of the next section of being convenient for is polished by the piece of polishing.
Further, still include lifter plate and a plurality of drive transmission ring clockwise rotation or anticlockwise rotation's transmission unit, transmission unit includes the slide bar, first connecting rod and second connecting rod, the lifter plate level sets up, and the lower fixed surface who passes frame and lifter plate in the upper end of slide bar is connected, slide bar and frame sliding connection, the lower extreme of slide bar is articulated with the one end of first connecting rod, the other end of first connecting rod is articulated with the one end of second connecting rod, the other end and the transmission ring fixed connection of second connecting rod.
The up-and-down movement of the lifting plate can drive the sliding rod to move up and down, the sliding rod drives the first connecting rod to move, the first connecting rod drives the second connecting rod to drive the second connecting rod to rotate around the axis of the transmission ring, and the second connecting rod can pull the transmission ring to rotate back and forth due to the up-and-down movement of the lifting plate, so that the rotation of the grinding ring is realized; this in-process will be simple reciprocate the conversion for the rotation of polishing the ring, will be driven process by simple to heavy and complicated, be convenient for let polishing the ring rotation through reciprocating of control lifter plate, use simple and conveniently, simplify workman's operation.
Furthermore, a spring is arranged between the lifting plate and the rack, one end of the spring is fixedly connected with the lower surface of the lifting plate, and the other end of the spring is fixedly connected with the rack.
When the lifting plate is pressed down, the spring is compressed; when the lifting plate is required to move upwards to return to the original position, the lifting plate is loosened, the elastic force of the spring is released, the spring can rapidly push the lifting plate back to the original state, and the rebound operation of the lifting plate is simpler.
Furthermore, the spring is a pressure spring, and the pressure spring and the slide rod are coaxially arranged.
The pressure spring can bear axial pressure, and is more durable in arrangement compared with a common spring under the repeated pressure of the lifting plate; because the pressure spring and the slide bar are coaxially arranged, when the pressure spring extends or contracts, the slide bar can be driven to synchronously slide up and down, the moving synchronism of the slide bar is better, and the moving stability of the slide bar is improved.
Furthermore, there is and only one colludes tooth between two adjacent driving teeth.
The arrangement of the hook teeth is matched with that of the transmission teeth, so that the interaction between the single hook teeth and the single transmission teeth is facilitated, and the mutual interference is avoided; and when the colluding tooth between two adjacent driving teeth damages, only one colludes the tooth and can lose efficacy, can not influence the interact between other colluding teeth and the driving teeth.
Further, the polishing sheet is detachably mounted on the inner wall of the polishing hole.
The polishing piece in the polishing hole is convenient to replace, and the polishing device keeps a good polishing effect.
Drawings
FIG. 1 is a schematic structural diagram of a polishing device for building pipe materials in a front view direction according to the present invention;
FIG. 2 is a right-side sectional view of the polishing unit, drive ring, slide block, etc. of FIG. 1;
fig. 3 is a cross-sectional view taken at a in fig. 1.
Detailed Description
The following is further detailed by the specific embodiments:
reference numerals in the drawings of the specification include: the grinding machine comprises a machine frame 10, a lifting plate 20, a cam 30, a transmission ring 40, a hook tooth 401, a tension spring 402, a sliding block 50, a connecting pipe 60, a grinding ring 70, a transmission tooth 701, a grinding sheet 702, a sliding rod 801, a first connecting rod 802, a second connecting rod 803, a compression spring 804 and a steel pipe 90.
The embodiments are substantially as shown in figures 1, 2 and 3: a grinding device for building pipe materials comprises a rack 10, a lifting plate 20, a rotating cam 30, a grinding unit, two transmission units, two transmission rings 40 and two sliding blocks 50 welded on the rack 10, wherein mounting holes are horizontally formed in the two sliding blocks 50, and the two mounting holes are coaxially arranged as shown in fig. 2.
As shown in fig. 2, the polishing unit includes two rotatable polishing rings 70 and two connecting pipes 60, one end of the connecting pipe 60 is connected to the mounting hole of the slider 50 in a coaxial rotation manner, the other end of the connecting pipe 60 is welded to the inner ring of the polishing ring 70 in a coaxial manner, the inner wall of the connecting pipe 60 and the inner ring of the polishing ring 70 enclose a polishing hole, a polishing sheet 702 is laid on the inner wall of the polishing hole, the polishing sheet 702 is detachably mounted on the inner wall of the polishing hole, and the polishing sheet 702 is in transition fit with the outer wall of the steel pipe 90.
As shown in fig. 1 and 3, the outer ring of the polishing ring 70 is provided with a plurality of transmission teeth 701, the transmission ring 40 is coaxially sleeved outside the polishing ring 70, and a gap is provided between the transmission ring 40 and the polishing ring 70. As shown in fig. 3, a hook tooth 401 is hinged on the lower side of the transmission ring 40, the right side of the hook tooth 401 is opposite to the inner wall of the transmission ring 40, a tension spring 402 is welded on the right side of the hook tooth 401, and the upper end of the tension spring 402 is welded with the lower side of the transmission ring 40; the hook teeth 401 are located between two adjacent transmission teeth 701, and only one hook tooth 401 is located between two adjacent transmission teeth 701; when the transmission ring 40 rotates, the right side of the hook tooth 401 abuts against the left side of the transmission tooth 701 or the left side of the hook tooth 401 is in sliding contact with the right side of the transmission tooth 701.
As shown in fig. 1, the transmission unit includes a sliding rod 801, a first connecting rod 802 and a second connecting rod 803, the lifting plate 20 is horizontally disposed, the upper end of the sliding rod 801 penetrates through the machine frame 10 and is welded to the lower surface of the lifting plate 20, the sliding rod 801 is slidably connected to the machine frame 10, the lower end of the sliding rod 801 is hinged to the upper end of the first connecting rod 802, the lower end of the first connecting rod 802 is hinged to the left end of the second connecting rod 803, and one end of the second connecting rod 803 close to the transmission ring 40 is welded to the outer ring of the transmission ring 40; the transmission units are distributed on two sides of a vertical center line of the transmission ring 40, the transmission unit on the right side is connected with the transmission ring 40 on the front side, and the transmission unit on the left side is connected with the transmission ring 40 on the rear side. When the lifting plate 20 is lifted, the wheel edge of the cam 30 contacts with the upper surface of the lifting plate 20, the lifting plate 20 and the right transmission unit drive the front polishing ring 70 to rotate clockwise, and the lifting plate 20 and the left transmission unit drive the rear polishing ring 70 to rotate counterclockwise.
As shown in fig. 1, a spring is arranged between the lifting plate 20 and the frame 10, the spring is a compression spring 804, the upper end of the compression spring 804 is welded to the lower surface of the lifting plate 20, the lower end of the compression spring 804 is welded to the frame 10, and the compression spring 804 is coaxially arranged with the sliding rod 801.
As shown in fig. 2, two sliders 50, two grinding units, two connection pipes 60, and two driving rings 40 are symmetrically disposed along the vertical center of the two sliders 50.
When the polishing device for building pipe materials in the embodiment is used, a steel pipe 90 to be polished is horizontally inserted into two polished holes as shown in fig. 2, the steel pipe 90 is in contact with polishing pieces 702 in the polished holes, and then the two ends of the steel pipe 90 outside the polished holes are fixed.
Then the cam 30 is started to rotate, the lifting plate 20 is pressed downwards when the cam 30 rotates, the compression spring 804 is compressed firstly in the descending process of the lifting plate 20, meanwhile, the sliding rod 801 is pushed to move downwards, the sliding rod 801 moving downwards pushes the first connecting rod 802 to move downwards, the upper end of the second connecting rod 803 in an inclined state is driven to move downwards when the first connecting rod 802 descends, and the second connecting rod 803 is in a horizontal state as shown in fig. 1; in the process, one end of the second connecting rod 803 close to the transmission ring 40 rotates around the center of the transmission ring 40, and then the transmission ring 40 is stirred to rotate, the second connecting rod 803 on the right side of fig. 1 drives the transmission ring 40 to rotate clockwise, the right side of the hook tooth 401 in fig. 3 is abutted against the left side of the transmission tooth 701, the hook tooth 401 and the transmission tooth 701 keep relatively static when the transmission ring 40 rotates, and then the polishing ring 70 on the front side is driven to rotate clockwise. As shown in fig. 2, since the two sliders 50, the two grinding units, the two connection pipes 60, and the two driving rings 40 are symmetrically disposed along the vertical center line of the two sliders 50, the grinding ring 70 positioned at the rear side in fig. 1 can be rotated counterclockwise.
When the two polishing rings 70 rotate, the connecting pipe 60 and the polishing piece 702 in the polishing hole are driven to rotate, the outer wall of the steel pipe 90 is polished by the polishing piece 702, and the sliding block 50 can limit the rotation of the connecting pipe 60.
When the two second connecting rods 803 are in a horizontal state, the lifting plate 20 moves down to the extreme position, and after the maximum diameter position of the cam 30 rotates, the lifting plate 20 rebounds under the elasticity of the compression spring 804, so as to drive the sliding rod 801, the first connecting rod 802 and the second connecting rod 803 to move back to the original height, and the second connecting rod 803 drives the transmission ring 40 to rotate back to the original position. When the transmission ring 40 rotates, as shown in fig. 3, the left side of the hook tooth 401 contacts with the right side of the transmission tooth 701, the torsion force is converted into the pressure of the hook tooth 401 on the tension spring 402, the tension spring 402 contracts, so that the hook tooth 401 rotates around the hinge joint of the hook tooth 401 and the transmission ring 40, and the grinding ring 70 and the transmission tooth 701 keep relatively static relative to the hook tooth 401; when the second connecting rod 803 on the right drives the polishing ring 70 on the front side to rotate clockwise again, and the second connecting rod 803 on the left drives the polishing ring 70 on the front side to rotate anticlockwise again, the burrs on the outer wall of the steel pipe 90 are polished again.
In the grinding process, the steel pipe 90 can be horizontally pushed to move, all parts of the steel pipe 90 can be in contact with the grinding sheet 702, and when the steel pipe 90 moves horizontally, part of burrs on the grinding sheet 702 are taken out, so that the burrs are conveniently discharged; when the polishing ability of the polishing pad 702 reaches the limit, the polishing pad 702 located in the polishing hole may be replaced to maintain the entire polishing apparatus at an efficient polishing ability.
Claims (6)
1. A polishing device for building pipe materials comprises a rack and is characterized by further comprising a polishing unit and a sliding block fixedly mounted on the rack, wherein a mounting hole is horizontally formed in the sliding block, the polishing unit comprises a plurality of rotatable polishing rings and a plurality of connecting pipes, one end of each connecting pipe is coaxially and rotatably connected with the mounting hole of the sliding block, the other end of each connecting pipe is coaxially and fixedly connected with an inner ring of each polishing ring, a polishing hole is formed by the inner wall of each connecting pipe and the inner ring of each polishing ring in a surrounding mode, a polishing sheet is laid on the inner wall of each polishing hole, and the polishing sheet is in transition fit with the outer wall of a steel pipe; the polishing device is characterized by further comprising a plurality of transmission rings, a plurality of transmission teeth are arranged on the outer ring of the polishing ring, the transmission rings are coaxially sleeved outside the polishing rings, a gap is formed between each transmission ring and each polishing ring, a plurality of hook teeth are hinged to one side, close to the polishing rings, of each transmission ring, one side of each hook tooth is opposite to the inner wall of each transmission ring, a tension spring is fixedly mounted on one side, close to the inner wall of each transmission ring, of each hook tooth, and the other end of each tension spring is fixedly connected with the inner wall of each transmission ring; the hook teeth are located between two adjacent transmission teeth, only one hook tooth is arranged between the two adjacent transmission teeth, one side, close to the tension spring, of the hook teeth can be abutted to one side of the transmission teeth, and one side, far away from the tension spring, of the hook teeth can be in sliding contact with the other side of the transmission teeth.
2. The building pipe material polishing device according to claim 1, further comprising a lifting plate and a plurality of transmission units for driving the transmission rings to rotate clockwise or counterclockwise, wherein the transmission units comprise a slide bar, a first connecting rod and a second connecting rod, the lifting plate is horizontally arranged, the upper end of the slide bar penetrates through the rack and is fixedly connected with the lower surface of the lifting plate, the slide bar is slidably connected with the rack, the lower end of the slide bar is hinged with one end of the first connecting rod, the other end of the first connecting rod is hinged with one end of the second connecting rod, and the other end of the second connecting rod is fixedly connected with the transmission rings.
3. The building pipe material grinding device as claimed in claim 2, wherein a spring is arranged between the lifting plate and the frame, one end of the spring is fixedly connected with the lower surface of the lifting plate, and the other end of the spring is fixedly connected with the frame.
4. The building pipe material grinding device as claimed in claim 3, wherein the spring is a compression spring, and the compression spring is coaxially arranged with the slide rod.
5. The building pipe grinding device as claimed in claim 1, wherein there is one and only one hook tooth between two adjacent transmission teeth.
6. The grinding device for building pipe materials according to claim 1, wherein the grinding sheet is detachably mounted on an inner wall of the grinding hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811534686.7A CN109465692B (en) | 2018-12-14 | 2018-12-14 | Polishing device for building pipe materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811534686.7A CN109465692B (en) | 2018-12-14 | 2018-12-14 | Polishing device for building pipe materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109465692A CN109465692A (en) | 2019-03-15 |
| CN109465692B true CN109465692B (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811534686.7A Active CN109465692B (en) | 2018-12-14 | 2018-12-14 | Polishing device for building pipe materials |
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| CN (1) | CN109465692B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112440163B (en) * | 2020-11-16 | 2021-11-12 | 安徽省永流管道有限公司 | Large-diameter threaded steel pipe forming processing method |
| CN116100435B (en) * | 2023-03-19 | 2023-09-29 | 江苏江中集团有限公司 | Auxiliary polishing device for building construction |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001121387A (en) * | 1999-10-28 | 2001-05-08 | Nisshin Steel Co Ltd | Outer surface polishing device for pillar material |
| CN201872011U (en) * | 2010-07-13 | 2011-06-22 | 濮阳中石集团有限公司 | Cylindrical grinding device |
| CN107486773A (en) * | 2016-06-13 | 2017-12-19 | 重庆三希宝科技发展有限公司 | A kind of efficient electromechanical accessory sanding apparatus |
| CN205852416U (en) * | 2016-06-18 | 2017-01-04 | 新昌县兴旺轴承有限公司 | A kind of bearing outer ring burnishing device of drum-type |
| CN206097329U (en) * | 2016-08-31 | 2017-04-12 | 江苏文瑞智能科技有限公司 | A yard device is swiftly swept with RFID in supermarket |
| CN207104209U (en) * | 2017-08-02 | 2018-03-16 | 广东派博钢管有限公司 | Weld seam automatically grinding device is used in a kind of spiral steel pipe production |
| CN207700668U (en) * | 2017-11-28 | 2018-08-07 | 开封大学 | A kind of building scaffold surface derusting device for steel tubes |
| CN108723508A (en) * | 2018-05-29 | 2018-11-02 | 重庆市璧山区合成机械制造有限公司 | Gear grinding device |
| CN108556230B (en) * | 2018-05-31 | 2020-09-08 | 重庆工业职业技术学院 | Plastic part cutting and polishing equipment |
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2018
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Application publication date: 20190315 Assignee: NINGBO DESHEN MACHINERY EQUIPMENT Co.,Ltd. Assignor: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY Co.,Ltd. Contract record no.: X2021330000252 Denomination of invention: A grinding device for building pipe materials Granted publication date: 20200414 License type: Common License Record date: 20210904 Application publication date: 20190315 Assignee: NINGBO LONGRUI MACHINERY MANUFACTURE Co.,Ltd. Assignor: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY Co.,Ltd. Contract record no.: X2021330000229 Denomination of invention: A grinding device for building pipe materials Granted publication date: 20200414 License type: Common License Record date: 20210903 Application publication date: 20190315 Assignee: NINGBO HIGH-TECH ZONE SHENTAIDE MACHINERY EQUIPMENT Co.,Ltd. Assignor: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY Co.,Ltd. Contract record no.: X2021330000231 Denomination of invention: A grinding device for building pipe materials Granted publication date: 20200414 License type: Common License Record date: 20210904 |
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Effective date of registration: 20220714 Address after: Room 7088-230, 7th floor, 1558 Jiangnan Road, high tech Zone, Ningbo, Zhejiang 315000 Patentee after: NINGBO LONGRUI MACHINERY MANUFACTURE CO.,LTD. Address before: 22 Shuhai Road, Shipu Town, Xiangshan County, Ningbo City, Zhejiang Province Patentee before: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY CO.,LTD. |
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Assignee: NINGBO HIGH-TECH ZONE SHENTAIDE MACHINERY EQUIPMENT Co.,Ltd. Assignor: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY CO.,LTD. Contract record no.: X2021330000231 Date of cancellation: 20240220 Assignee: NINGBO LONGRUI MACHINERY MANUFACTURE CO.,LTD. Assignor: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY CO.,LTD. Contract record no.: X2021330000229 Date of cancellation: 20240220 Assignee: NINGBO DESHEN MACHINERY EQUIPMENT Co.,Ltd. Assignor: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY CO.,LTD. Contract record no.: X2021330000252 Date of cancellation: 20240220 |
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