CN212665748U - Large-diameter steel pipe outer wall rust removal device for machining - Google Patents
Large-diameter steel pipe outer wall rust removal device for machining Download PDFInfo
- Publication number
- CN212665748U CN212665748U CN202021248392.0U CN202021248392U CN212665748U CN 212665748 U CN212665748 U CN 212665748U CN 202021248392 U CN202021248392 U CN 202021248392U CN 212665748 U CN212665748 U CN 212665748U
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- Prior art keywords
- steel pipe
- fixedly connected
- pipe outer
- rod
- machining
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 69
- 239000010959 steel Substances 0.000 title claims abstract description 69
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000003754 machining Methods 0.000 title claims abstract description 30
- 238000004140 cleaning Methods 0.000 claims abstract description 25
- 238000005498 polishing Methods 0.000 claims abstract description 12
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005459 micromachining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The utility model relates to a machining equipment technical field just discloses a major diameter steel pipe outer wall rust cleaning device for machining, the on-line screen storage device comprises a base, the last fixed surface of base is connected with the workstation, the equal fixedly connected with support column in four corners of workstation upper surface, the last fixed surface of support column is connected with the roof. This major diameter steel pipe outer wall rust cleaning device for machining, promote the board removal of polishing through the push rod, the top of pull rod inserts in the spacing hole, the rust cleaning to the steel pipe outer wall of different specifications has been realized, the problem that current device can only rust cleaning to the steel pipe of single specification has been solved, application scope has been improved, promote the slider through first spring and remove along the spout, make the surface of splint and the inner wall contact of steel pipe, the fixing to the steel pipe has been realized, the problem that needs take it down the upset when having solved that current device mostly carries out the centre gripping to the steel pipe outer wall and lead to the rust cleaning, work efficiency has been improved.
Description
Technical Field
The utility model relates to a machining equipment technical field specifically is a machining is with major diameter steel pipe outer wall rust cleaning device.
Background
The machining refers to a process of changing the overall dimension or performance of a workpiece through a mechanical device, and with the rapid development of modern machining and the rapid development of machining technology, a plurality of advanced machining technical methods such as micro machining technology, rapid forming technology, precise ultra-precise machining technology and the like are gradually developed; the large-diameter steel pipe outer wall rust removal device for machining in the prior art is mostly fixed and can only remove rust on the surface of a steel pipe with a single size, so that the application range is reduced.
For example, chinese patent application nos.: 201820634285.8, the rust removing device for the outer wall of the large-diameter steel pipe for machining is basically described as follows: the device comprises a bottom plate, wherein a left vertical plate and a right vertical plate are vertically and fixedly installed on the bottom plate, top plates are horizontally and fixedly installed at the upper ends of the left vertical plate and the right vertical plate, a driving motor is inversely installed on each top plate through a support, a driving shaft penetrating through the top plates is coaxially and fixedly installed on an output shaft of the driving motor, a bearing plate is horizontally and fixedly installed at the upper end of a piston rod of an air cylinder, two lead screw sleeves are vertically and fixedly installed on the upper surface of the bearing plate, and lead screws are penetrated; the utility model can realize the adjustment of the distance between the grinding plates by rotating the hand wheel, realizes the rust removal of the outer walls of the steel pipes with different diameters, and improves the application range; this utility model discloses though having enlarged the rust cleaning to the steel pipe of different specifications through adjusting the board of polishing, nevertheless carry out the centre gripping through the lead screw to the steel pipe surface and fix for there is some place to polish when derusting the steel pipe and can not arrive, lead to the staff to take off the steel pipe and overturn and fix again and just can thoroughly derust, wasted the time, reduced work efficiency.
Therefore, the inventor provides a large-diameter steel pipe outer wall rust removing device for machining, which is researched and improved aiming at the existing structure and deficiency and aims to achieve the purpose of higher practical value by taking the experience of abundant design development and actual manufacturing of the related industry for years.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides a machining is with major diameter steel pipe outer wall rust cleaning device has solved prior art's machining and has used major diameter steel pipe outer wall rust cleaning device most to be fixed unchangeable, can only rust cleaning to the steel pipe surface of single size to application scope's problem has been reduced.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: a large-diameter steel pipe outer wall rust removing device for machining comprises a base, wherein a workbench is fixedly connected to the upper surface of the base, support columns are fixedly connected to four corners of the upper surface of the workbench, a top plate is fixedly connected to the upper surface of each support column, a placing plate is fixedly connected to the front side of the lower surface of the workbench, a driving motor is fixedly connected to the left side surface of the placing plate, a rotating column is fixedly connected to the output end of the driving motor, a placing plate is fixedly connected to the upper surface of the rotating column, a sliding groove is formed in the upper surface of the placing plate, a guide rod is arranged inside the sliding groove, a sliding block is sleeved on the outer side of the outer surface of the guide rod, a clamping plate is fixedly connected to the upper surface of the sliding block, a first spring is sleeved on the outer surface of the guide rod, a push rod motor is fixedly connected to the middle of, the equal fixedly connected with shifting ring in front and the back of carriage release lever, articulated seat has all been cup jointed to both sides around the carriage release lever surface, the inside of articulated seat is provided with first pivot, and the connecting plate has all been cup jointed with the bottom that is located the first pivot surface of front side at the top that is located the first pivot surface of rear side, the middle part of carriage release lever lateral surface is pegged graft and is had the push rod, spacing hole has been seted up to the lower surface of push rod, the inboard of push rod upper surface is pegged graft and is had the second pivot, the medial surface fixedly connected with grinding plate of push rod, the middle part fixedly connected with mount of carriage release lever lower surface, the middle part of mount lower surface is pegged graft and is had the pull rod, the second spring has been cup jointed to the surface of pull rod, the.
Preferably, the sliding groove is a square sliding groove, the sliding block is a square sliding block, and the sliding groove is in sliding connection with the sliding block.
Preferably, the outer surface of the splint is provided with a cushion pad, and the cushion pad is made of nitrile rubber material.
Preferably, the lower surface of base is provided with the gasket, and the lower surface of gasket is provided with anti-skidding line, and the lower surface of anti-skidding line is provided with anti-skidding protruding grain.
Preferably, the middle part of the lower surface of the moving rod is provided with a through hole, and the top end of the pull rod penetrates through the through hole and is connected with the limiting hole in an inserting mode.
Preferably, the number of the moving rings is four, and the inner diameters of the four moving rings are matched with the diameter of the supporting column.
(III) advantageous effects
Compared with the prior art, the utility model provides a major diameter steel pipe outer wall rust cleaning device for machining possesses following beneficial effect:
1. this major diameter steel pipe outer wall rust cleaning device for machining, promote the board removal of polishing through the push rod, the top of pull rod inserts in the spacing hole, the rust cleaning to the steel pipe outer wall of different specifications has been realized, the problem that current device can only rust cleaning to the steel pipe of single specification has been solved, application scope has been improved, promote the slider through first spring and remove along the spout, make the surface of splint and the inner wall contact of steel pipe, the fixing to the steel pipe has been realized, the problem that needs take it down the upset when having solved that current device mostly carries out the centre gripping to the steel pipe outer wall and lead to the rust cleaning, work efficiency has been improved.
2. This major diameter steel pipe outer wall rust cleaning device for machining drives the carriage release lever through the output of push rod motor and goes up and down for the push rod drives the board of polishing and goes up and down, has realized the regulation to the board position of polishing, has avoided steel pipe length overlength to lead to the condition that the rust cleaning is incomplete to appear, has improved work quality, has improved application scope.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of the structure of the present invention;
fig. 3 is an enlarged schematic view of the structure at a position a of the present invention.
In the figure: 1. a base; 2. a work table; 3. a support pillar; 4. a top plate; 5. placing the plate; 6. a drive motor; 7. rotating the column; 8. placing a tray; 801. a chute; 9. a guide bar; 10. a slider; 11. a splint; 12. a first spring; 13. a push rod motor; 14. a travel bar; 15. a moving ring; 16. a hinged seat; 17. a first rotating shaft; 18. a connecting plate; 19. a push rod; 1901. a limiting hole; 20. a second rotating shaft; 21. grinding the plate; 22. a fixed mount; 23. a pull rod; 24. a second spring; 25. a sheet is fixed.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a large-diameter steel pipe outer wall rust removing device for machining comprises a base 1, wherein a workbench 2 is fixedly connected to the upper surface of the base 1, support columns 3 are fixedly connected to four corners of the upper surface of the workbench 2, a top plate 4 is fixedly connected to the upper surface of each support column 3, a placing plate 5 is fixedly connected to the front side of the lower surface of the workbench 2, a driving motor 6 is fixedly connected to the left side surface of the placing plate 5, the type of the driving motor 6 is CHM075, an output end of the driving motor 6 is fixedly connected with a rotating column 7, a placing disc 8 is fixedly connected to the upper surface of the rotating column 7, a sliding groove 801 is formed in the upper surface of the placing disc 8, a guide rod 9 is arranged inside the sliding groove 801, a sliding block 10 is sleeved on the outer side of the outer surface of the guide rod 9, a clamping plate 11 is fixedly connected to the upper surface of the sliding block 10, a first spring 12 is sleeved, the outer surface of the clamping plate 11 is in contact with the inner wall of the steel pipe, the steel pipe is fixed, the problem that the steel pipe needs to be taken down and turned over when the outer wall of the steel pipe is clamped by the existing device mostly to remove rust is solved, the working efficiency is improved, the middle part of the lower surface of the top plate 4 is fixedly connected with the push rod motor 13, the model of the push rod motor 13 is TG 300B, the output end of the push rod motor 13 is fixedly connected with the moving rod 14, the front surface and the back surface of the moving rod 14 are both fixedly connected with the moving ring 15, the front side and the back side of the outer surface of the moving rod 14 are both sleeved with the hinged seats 16, the inside of the hinged seats 16 is provided with the first rotating shaft 17, the top of the outer surface of the first rotating shaft 17 positioned at the rear side and the bottom of the outer surface of the first rotating shaft 17 positioned at the front side are both sleeved, a second rotating shaft 20 is inserted into the inner side of the upper surface of the push rod 19, a polishing plate 21 is fixedly connected with the inner side surface of the push rod 19, the output end of the push rod motor 13 drives the movable rod 14 to lift, so that the push rod 19 drives the grinding plate 21 to lift, the position of the grinding plate 21 is adjusted, the condition that the rust removal is incomplete due to the overlong length of the steel pipe is avoided, the working quality is improved, the application range is improved, the middle part of the lower surface of the movable rod 14 is fixedly connected with the fixed frame 22, the middle part of the lower surface of the fixed frame 22 is inserted with the pull rod 23, the grinding plate 21 is pushed by the push rod 19 to move, the top end of the pull rod 23 is inserted into the limit hole 1901, the rust removal of the outer walls of the steel pipes with different specifications is realized, the problem that the existing device can only remove rust of the steel pipes with single specification is solved, the application range is improved, the second spring 24 is sleeved on the outer surface of the pull rod 23, and the fixing piece 25 is sleeved on the outer surface of the pull rod 23.
The utility model discloses adjust according to the steel pipe of different specifications for the convenience, consequently set up spout 801 and be square sliding groove, slider 10 is square sliding block, spout 801 and slider 10 sliding connection for the staff is more rapid stabilization when adjusting according to the steel pipe of different specifications, thereby has saved the time, has improved work efficiency.
The utility model discloses a fix the steel pipe, consequently be provided with the blotter at splint 11's surface, the blotter is formed by the preparation of butadiene acrylonitrile rubber material, and the blotter of butadiene acrylonitrile rubber material has certain frictional force for the steel pipe is difficult for taking place to rotate when polishing and leads to the effect variation of polishing, thereby has improved fixed effect.
The utility model discloses a guarantee the device's stability, consequently be provided with the gasket at base 1's lower surface, the lower surface of gasket is provided with anti-skidding line, and anti-skidding line's lower surface is provided with anti-skidding protruding grain, and anti-skidding line's setting has increased the frictional force between the device and the ground to the device's stability has been guaranteed.
The utility model discloses a fix after the position of adjusting sanding plate 21, consequently seted up the through-hole at the middle part of the 14 lower surfaces of carriage release lever, the top of pull rod 23 is passed the through-hole and is pegged graft with spacing hole 1901 for the staff is adjusting the position of back fixation more stable according to the diameter of steel pipe sanding plate 21, thereby has improved fixed effect.
The utility model discloses a make when grinding plate 21 removes more stable, consequently set up the quantity of shift ring 15 and be four groups, the internal diameter of four groups of shift rings 15 all with the diameter looks adaptation of support column 3, the same diameter makes more stable when removing the position of grinding plate 21, is difficult for rocking to grinding plate 21's stability has been improved.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
When the steel pipe fixing device is used, the clamping plate 11 is pushed inwards, the clamping plate 11 moves inwards to drive the sliding block 10 to move inwards along the sliding groove 801 and the guide rod 9, the sliding block 10 moves inwards to contract the first spring 12, when the clamping plate 11 moves to a position smaller than one centimeter of the inner diameter of a steel pipe, the sliding block stops moving, the steel pipe is inserted, the clamping plate 11 is loosened, due to the fact that the sliding block 10 is pushed to move outwards by the acting force of the first spring 12, the sliding block 10 moves outwards to drive the clamping plate 11 to move outwards, when the outer surface of the clamping plate 11 is contacted with the inner wall of the steel pipe, the steel pipe is fixed, the pull rod 23 moves downwards to drive the fixing piece 25 to move downwards, the fixing piece 25 moves downwards to contract the second spring 24, when the top end of the pull rod 23 is pulled out of the limiting hole 1901, the, the inward movement of the second rotating shaft 20 drives the inner end of the connecting plate 18 to move inward, the inward movement of the connecting plate 18 causes the hinge base 16 to move inward along the moving rod 14, the inward movement of the pushing rod 19 pushes the grinding plate 21 to move inward, when the medial surface of board 21 and the outer surface contact of steel pipe stop to remove when polishing, start driving motor 6, the rotatory drive of output of driving motor 6 rotates post 7 that rotates, it rotates to rotate post 7 and drives and place a set 8 rotation, it rotates and drives the steel pipe rotation to place a set 8, the steel pipe rotates and makes board 21 polish the iron rust on steel pipe surface, start push rod motor 13, the flexible drive carriage release lever 14 lift of output of push rod motor 13, carriage release lever 14 lift drives shift ring 15 and goes up and down along support column 3, carriage release lever 14 lift drives push rod 19 and goes up and down, push rod 19 goes up and down to drive board 21 and goes up and down, accomplished the rust cleaning to the steel pipe outer wall.
In conclusion, this major diameter steel pipe outer wall rust cleaning device for machining, promote the board 21 that polishes through push rod 19 and remove, the top of pull rod 23 inserts in spacing hole 1901, the rust cleaning to the steel pipe outer wall of different specifications has been realized, the problem that current device can only rust cleaning to the steel pipe of single specification has been solved, application scope has been improved, promote slider 10 through first spring 12 and remove along spout 801, make the outer surface of splint 11 and the inner wall contact of steel pipe, fixed to the steel pipe has been realized, the problem that needs take it off the upset when having solved current device and mostly carrying out the centre gripping to the steel pipe outer wall and lead to the rust cleaning, work efficiency is improved.
This major diameter steel pipe outer wall rust cleaning device for machining drives the carriage release lever 14 through the output of push rod motor 13 and goes up and down for push rod 19 drives the board 21 that polishes and goes up and down, has realized the regulation to the board 21 position of polishing, has avoided the steel pipe length overlength to lead to the condition of the incomplete rust cleaning to appear, has improved work quality, has improved application scope.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a major diameter steel pipe outer wall rust cleaning device for machining, includes base (1), its characterized in that: the upper surface of the base (1) is fixedly connected with a workbench (2), four corners of the upper surface of the workbench (2) are fixedly connected with supporting columns (3), the upper surface of the supporting columns (3) is fixedly connected with a top plate (4), the front side of the lower surface of the workbench (2) is fixedly connected with a placing plate (5), the left side surface of the placing plate (5) is fixedly connected with a driving motor (6), the output end of the driving motor (6) is fixedly connected with a rotating column (7), the upper surface of the rotating column (7) is fixedly connected with a placing disc (8), the upper surface of the placing disc (8) is provided with a sliding groove (801), a guide rod (9) is arranged inside the sliding groove (801), the outer side of the outer surface of the guide rod (9) is sleeved with a sliding block (10), and the upper surface of the sliding block (10) is fixedly connected with a clamping, the outer surface of the guide rod (9) is sleeved with a first spring (12), the middle part of the lower surface of the top plate (4) is fixedly connected with a push rod motor (13), the output end of the push rod motor (13) is fixedly connected with a moving rod (14), the front surface and the back surface of the moving rod (14) are both fixedly connected with moving rings (15), the front side and the back side of the outer surface of the moving rod (14) are both sleeved with hinged seats (16), a first rotating shaft (17) is arranged inside the hinged seats (16), the top part of the outer surface of the first rotating shaft (17) positioned on the rear side and the bottom part of the outer surface of the first rotating shaft (17) positioned on the front side are both sleeved with connecting plates (18), the middle part of the outer side surface of the moving rod (14) is inserted with a push rod (19), the lower surface of the push rod (19) is provided with a limiting hole (1901), and the, the polishing device is characterized in that a polishing plate (21) is fixedly connected to the inner side face of the push rod (19), a fixing frame (22) is fixedly connected to the middle of the lower surface of the moving rod (14), a pull rod (23) is inserted into the middle of the lower surface of the fixing frame (22), a second spring (24) is sleeved on the outer surface of the pull rod (23), and a fixing piece (25) is sleeved on the outer surface of the pull rod (23).
2. The large-diameter steel pipe outer wall rust removal device for machining according to claim 1, characterized in that: the sliding groove (801) is a square sliding groove, the sliding block (10) is a square sliding block, and the sliding groove (801) is in sliding connection with the sliding block (10).
3. The large-diameter steel pipe outer wall rust removal device for machining according to claim 1, characterized in that: the outer surface of the clamping plate (11) is provided with a cushion pad, and the cushion pad is made of nitrile rubber materials.
4. The large-diameter steel pipe outer wall rust removal device for machining according to claim 1, characterized in that: the lower surface of base (1) is provided with the gasket, and the lower surface of gasket is provided with anti-skidding line, and the lower surface of anti-skidding line is provided with anti-skidding protruding grain.
5. The large-diameter steel pipe outer wall rust removal device for machining according to claim 1, characterized in that: the middle part of the lower surface of the moving rod (14) is provided with a through hole, and the top end of the pull rod (23) penetrates through the through hole and is connected with the limiting hole (1901) in an inserting mode.
6. The large-diameter steel pipe outer wall rust removal device for machining according to claim 1, characterized in that: the number of the moving rings (15) is four, and the inner diameters of the four moving rings (15) are matched with the diameter of the supporting column (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021248392.0U CN212665748U (en) | 2020-06-30 | 2020-06-30 | Large-diameter steel pipe outer wall rust removal device for machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021248392.0U CN212665748U (en) | 2020-06-30 | 2020-06-30 | Large-diameter steel pipe outer wall rust removal device for machining |
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| Publication Number | Publication Date |
|---|---|
| CN212665748U true CN212665748U (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021248392.0U Expired - Fee Related CN212665748U (en) | 2020-06-30 | 2020-06-30 | Large-diameter steel pipe outer wall rust removal device for machining |
Country Status (1)
| Country | Link |
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| CN (1) | CN212665748U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113118893A (en) * | 2021-04-19 | 2021-07-16 | 武汉梓翰装饰工程有限公司 | Assembled steel construction prefab finish machining system |
| CN113414682A (en) * | 2021-07-28 | 2021-09-21 | 唐山学院 | Curved surface polishing and grinding machine for plastic hollow part |
| CN113414649A (en) * | 2021-07-22 | 2021-09-21 | 安徽凤阳淮河玻璃有限公司 | Grinding device for inner side of opening of glass cup |
| CN113601367A (en) * | 2021-08-20 | 2021-11-05 | 赣州德泽贸易有限公司 | Old and useless steel pipe material rust cleaning device for construction |
| CN113790938A (en) * | 2021-08-25 | 2021-12-14 | 山东省地质矿产勘查开发局第一地质大队（山东省第一地质矿产勘查院） | Variable-caliber rock core splitting machine |
| CN114523375A (en) * | 2022-02-22 | 2022-05-24 | 泰兴市珑华压克力板材有限公司 | Burr processing apparatus is used in production of organic glass stick |
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2020
- 2020-06-30 CN CN202021248392.0U patent/CN212665748U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113118893A (en) * | 2021-04-19 | 2021-07-16 | 武汉梓翰装饰工程有限公司 | Assembled steel construction prefab finish machining system |
| CN113118893B (en) * | 2021-04-19 | 2022-04-22 | 秦皇岛永祯钢结构制造有限公司 | Assembled steel construction prefab finish machining system |
| CN113414649A (en) * | 2021-07-22 | 2021-09-21 | 安徽凤阳淮河玻璃有限公司 | Grinding device for inner side of opening of glass cup |
| CN113414682A (en) * | 2021-07-28 | 2021-09-21 | 唐山学院 | Curved surface polishing and grinding machine for plastic hollow part |
| CN113601367A (en) * | 2021-08-20 | 2021-11-05 | 赣州德泽贸易有限公司 | Old and useless steel pipe material rust cleaning device for construction |
| CN113790938A (en) * | 2021-08-25 | 2021-12-14 | 山东省地质矿产勘查开发局第一地质大队（山东省第一地质矿产勘查院） | Variable-caliber rock core splitting machine |
| CN113790938B (en) * | 2021-08-25 | 2024-04-19 | 山东省地质矿产勘查开发局第一地质大队（山东省第一地质矿产勘查院） | Core splitting machine with variable caliber |
| CN114523375A (en) * | 2022-02-22 | 2022-05-24 | 泰兴市珑华压克力板材有限公司 | Burr processing apparatus is used in production of organic glass stick |
| CN114523375B (en) * | 2022-02-22 | 2023-02-24 | 泰兴市珑华压克力板材有限公司 | Deckle edge processing apparatus is used in production of organic glass stick |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210309 |