CN107639481A - A kind of horizontal two-sided sander of adjustable butterfly valve plate - Google Patents
A kind of horizontal two-sided sander of adjustable butterfly valve plate Download PDFInfo
- Publication number
- CN107639481A CN107639481A CN201711003472.2A CN201711003472A CN107639481A CN 107639481 A CN107639481 A CN 107639481A CN 201711003472 A CN201711003472 A CN 201711003472A CN 107639481 A CN107639481 A CN 107639481A
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- valve plate
- butterfly valve
- motor
- workbench
- horizontal
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- 238000005498 polishing Methods 0.000 claims abstract description 44
- 239000000084 colloidal system Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 210000003462 vein Anatomy 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a kind of horizontal two-sided sander of adjustable butterfly valve plate,Including workbench,The upper surface center of the workbench is provided with groove,The inner bottom surface of groove is provided with two the first sliding rails,First sliding rail is provided with the first slide bearings being slidably connected,The mode that threaded rod is connected through a screw thread with the first sliding rail is connected,By the first electric expansion bar U-shaped fixed mount can be driven to move up and down,Butterfly valve plate is driven to move up and down by U-shaped fixed mount,Both sides of butterfly valve plate are polished comprehensively with this,So that polishing is more convenient,Polishing pad can be driven to move left and right by Telescopic-cylinder bar,Polishing pressure between polishing pad and butterfly valve plate is adjusted with this,The horizontal two-sided sander structure of the adjustable butterfly valve plate is simple,It is easy to operate,It is more convenient that not only butterfly valve plate can be fixed,And pressure when can adjust polishing,So that polishing is more convenient.
Description
Technical field
The present invention relates to butterfly valve plate processing technique field, the horizontal two-sided polishing of specially a kind of adjustable butterfly valve plate
Machine.
Background technology
In the structure of butterfly valve, valve plate is a vital part, and valve plate needs two sides precisely to polish, if polishing
Effect is bad, will appear from logical leakage, seals not congruent situation, and the polishing of present valve plate is mostly that valve plate is horizontal positioned, passes through transmission
Power is transmitted supreme polishing pad to reach Double-side Synchronous polishing by mechanism, and such polishing mode user is difficult to observe valve plate
The polishing situation of lower surface, and transmission mechanism likely result in upper surface polishing dynamics it is inadequate, and dynamics when polishing is not
It can be adjusted, therefore use is very inconvenient.
The content of the invention
The technical problem to be solved in the present invention is to overcome the defects of existing, there is provided a kind of level of adjustable butterfly valve plate is double
Face sander, it is simple in construction, it is easy to operate, when can not only fix to butterfly valve plate and more facilitate, and polishing can be adjusted
Pressure so that polishing is more convenient, effectively can solve the problems, such as in background technology.
To achieve the above object, the present invention provides following technical scheme：A kind of the horizontal of adjustable butterfly valve plate two-sided beats
Grinding machine, including workbench, the upper surface center of the workbench are provided with groove, and the inner bottom surface of groove is provided with two first slips
Track, the first sliding rail are provided with the first slide bearings being slidably connected, and the both ends of the groove are connected with by bearing
Threaded rod, the mode that threaded rod is connected through a screw thread with the first sliding rail are connected, and the side of the workbench is provided with the second electricity
Machine, the output shaft of the second motor runs through the side of workbench, and one end of the output shaft of the second motor and threaded rod connects, institute
The upper surface for stating the first slide bearings has been bolted two the first electric expansion bars, and the first electric expansion bar is stretched
U-shaped fixed mount is provided between end, the lower end transverse slat upper surface center of U-shaped fixed mount is provided with support base, and the upper end of U-shaped fixed mount is horizontal
Plate lower surface center is provided with the second electric expansion bar, and the telescopic end of the second electric expansion bar, which is provided with, presses head, presses head and support
Seat corresponds to up and down, and the upper surface both ends of the workbench are provided with end otic placode, and the upper surface both sides for stating workbench are provided with the
Two sliding rails, the second slide bearings of L-type structure are slidably connected on the second sliding rail, the second slide bearings
Telescopic-cylinder bar is provided between side and the side of end otic placode, the upper surface of second slide bearings is provided with the first electricity
Machine, the output shaft of the first motor run through the vertical plate side of the second slide bearings, and the end of the output shaft of the first motor
Provided with rotating disk, the side of rotating disk is connected with polishing pad by telescopic spring bar, and the side of the workbench is provided with air pump and PLC is controlled
Device processed, the outlet of air pump are connected by conduit with the import of Telescopic-cylinder bar, and the input electrical connection of the PLC is outside
The output end of power supply, output end electrical connection air pump, the second motor, the first electric expansion bar, the first motor and the of PLC
The input of two electric expansion bars.
As a preferred technical solution of the present invention, the lower surface corner of the workbench is provided with supporting leg, supporting leg
Lower end be provided with connection runners.
As a preferred technical solution of the present invention, the number of the telescopic spring bar is four, four telescopic springs
Bar is uniformly distributed around the center of rotating disk.
As a preferred technical solution of the present invention, the junction between the Telescopic-cylinder bar and end otic placode is provided with
Pressure sensor, the input of the output end electrical connection PLC of pressure sensor.
As a preferred technical solution of the present invention, the upper surface of the lower surface for pressing head and support base passes through
Colloid is connected with rubber pad, and the outside of rubber pad is provided with anti-slip veins.
Compared with prior art, the beneficial effects of the invention are as follows：On the horizontal two-sided sander of this adjustable butterfly valve plate
There is provided the second motor, threaded rod can be driven to rotate by the second motor, is rotated by threaded rod and drives the first sliding support
Seat is movable, drives butterfly valve plate to move forward and backward with this, can be driven by the first electric expansion bar and be moved down on U-shaped fixed mount
It is dynamic, by U-shaped fixed mount drive butterfly valve plate to move up and down, both sides of butterfly valve plate are polished comprehensively with this so that
Polishing is more convenient, polishing pad can be driven to move left and right by Telescopic-cylinder bar, and polishing pad and butterfly valve plate are adjusted with this
Between polishing pressure, the horizontal two-sided sander structure of the adjustable butterfly valve plate is simple, easy to operate, not only can be to butterfly
It is more convenient that valve valve plate is fixed, and pressure when can adjust polishing so that polishing is more convenient.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is side structure schematic diagram of the present invention.
In figure：1 first slide bearings, 2 first electric expansion bars, 3U types fixed mount, 4 polishing pads, 5 telescopic spring bars, 6
Air pump, 7 first motors, 8 Telescopic-cylinder bars, 9 end otic placodes, 10 rotating disks, 11 grooves, 12 threaded rods, 13 first sliding rails, 14
Second slide bearings, 15 workbench, 16 second sliding rails, 17 second motors, 18PLC controllers, 19 second electric expansions
Bar, 20 press head, 21 support bases.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1-2 is referred to, the present invention provides a kind of technical scheme：A kind of horizontal two-sided polishing of adjustable butterfly valve plate
Machine, including workbench 15, the upper surface center of workbench 15 are provided with groove 11, and the inner bottom surface of groove 11 is provided with two first cunnings
Dynamic rail road 13, the first sliding rail 13 are provided with the first slide bearings 1 being slidably connected, and the both ends of groove 11 are connected by bearing
Threaded rod 12 is connected to, the mode that threaded rod 12 is connected through a screw thread with the first sliding rail 13 is connected, and the side of workbench 15 is set
There is the second motor 17, the output shaft of the second motor 17 runs through the side of workbench 15, and the output shaft and spiral shell of the second motor 17
One end connection of rasp bar 12, the upper surface of the first slide bearings 1 have been bolted two the first electric expansion bars 2, the
U-shaped fixed mount 3 is provided between the telescopic end of one electric expansion bar 2, the lower end transverse slat upper surface center of U-shaped fixed mount 3 is provided with branch
Seat 21 is supportted, the upper end transverse slat lower surface center of U-shaped fixed mount 3 is provided with the second electric expansion bar 19, the second electric expansion bar 19
Telescopic end be provided with press first 20, press first 20 with support base about 21 it is corresponding, threaded rod 12 can be driven by the second motor 17
Rotate, rotated by threaded rod 12 and drive the first slide bearings 1 movable, drive butterfly valve plate to move forward and backward with this, led to
Crossing the first electric expansion bar 2 can drive U-shaped fixed mount 3 to move up and down, and driven by U-shaped fixed mount 3 and moved down on butterfly valve plate
It is dynamic, both sides of butterfly valve plate are polished comprehensively with this so that polishing more facilitates, the upper surface both ends of workbench 15 are set
There is end otic placode 9, the upper surface both sides of workbench 15 are provided with the second sliding rail 16, are slidably connected on the second sliding rail 16
There are the second slide bearings 14 of L-type structure, gas is provided between the side of the second slide bearings 14 and the side of end otic placode 9
Cylinder expansion link 8, the upper surface of the second slide bearings 14 are provided with the first motor 7, and the output shaft of the first motor 7 slides through second
The vertical plate side of support base 14, and the end of the output shaft of the first motor 7 is provided with rotating disk 10, and the side of rotating disk 10 passes through bullet
Spring expansion link 5 is connected with polishing pad 4, by Telescopic-cylinder bar 8 polishing pad 4 can be driven to move left and right, and passes through the band of the first motor 7
Turn disk 10 rotates, and adjusts the polishing pressure between polishing pad 4 and butterfly valve plate with this, the side of workbench 15 is provided with air pump
6 and PLC 18, the outlet of air pump 6 be connected by conduit with the import of Telescopic-cylinder bar 8, the input of PLC 18
Electrically connect the output end of external power source, output end electrical connection air pump 6, the second motor 17, the first electric expansion of PLC 18
The input of bar 2, the first motor 7 and the second electric expansion bar 19, the lower surface corner of workbench 15 are provided with supporting leg, supporting leg
Lower end be provided with connection runners, device can be supported by supporting leg so that support is more convenient, telescopic spring bar 5
Number be four, four telescopic spring bars 5 are uniformly distributed around the center of rotating disk 10, pass through four telescopic spring bars 5
Connected between telescopic spring bar 5 and rotating disk 10 more firmly, the junction between Telescopic-cylinder bar 8 and end otic placode 9 is provided with pressure
Force snesor, the input of the output end electrical connection PLC 18 of pressure sensor, the control pressure of PLC 18 sensing
Device, air pump 6, the second motor 17, the first electric expansion bar 2, the mode of the first motor 7 and the second electric expansion bar 19 are existing skill
The method commonly used in art, can detect the pressure between rotating disk 10 and butterfly valve plate by pressure sensor, prevent pressure mistake
It is big or too small, press first 20 lower surface and rubber pad, rubber peel are connected with by colloid with the upper surface of support base 21
The outside of pad is provided with anti-slip veins, by rubber pad can prevent from pressing first 20 and support base 21 butterfly valve plate is weighed wounded, this can
The horizontal two-sided sander structure of mode butterfly valve plate is simple, easy to operate, and it is more convenient that not only butterfly valve plate can be fixed,
And pressure when can adjust polishing so that polishing is more convenient.
When in use：Butterfly valve plate is placed into support base 21 first, polishing then can be driven by Telescopic-cylinder bar 8
Disk 4 is mobile to centre, and the position of butterfly valve plate is fixed on to the centre of support base 21 by polishing pad 4, then passes through the second electricity
Dynamic expansion link 19, which drives, to be pressed first 20 and moves down, by press first 20 and support base 21 butterfly valve plate is fixed, then pass through
Drive polishing pad 4 to move left and right by Telescopic-cylinder bar 8, drive rotating disk 10 to rotate by the first motor 7, polished with this to adjust
Polishing pressure between disk 4 and butterfly valve plate, the pressure between rotating disk 10 and butterfly valve plate can be detected by pressure sensor
Power, when preventing pressure excessive or too small, when pressure is excessive or too small, detection signal is sent by pressure sensor
In PLC 18, Telescopic-cylinder bar 8 is controlled to move by PLC 18, while threaded rod is driven by the second motor 17
12 rotate, and are rotated by threaded rod 12 and drive the first slide bearings 1 movable, driven by the first electric expansion bar 2 U-shaped
Fixed mount 3 moves up and down, and drives butterfly valve plate to move up and down by U-shaped fixed mount 3.
The present invention can drive threaded rod 12 to rotate by the second motor 17, rotated by threaded rod 12 and drive first to slide
Support base 1 is movable, drives butterfly valve plate to move forward and backward with this, U-shaped fixed mount can be driven by the first electric expansion bar 2
3 move up and down, and drive butterfly valve plate to move up and down by U-shaped fixed mount 3, both sides of butterfly valve plate are beaten comprehensively with this
Mill so that polishing is more convenient, by Telescopic-cylinder bar 8 polishing pad 4 can be driven to move left and right, and polishing pad 4 is adjusted with this
Polishing pressure between butterfly valve plate, the horizontal two-sided sander structure of the adjustable butterfly valve plate is simple, easy to operate, no
But it is more convenient that butterfly valve plate can be fixed, and pressure when can adjust polishing so that polishing is more convenient.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of horizontal two-sided sander of adjustable butterfly valve plate, including workbench (15), it is characterised in that：The workbench
(15) upper surface center is provided with groove (11), and the inner bottom surface of groove (11) is provided with two the first sliding rails (13), and first
Sliding rail (13) is provided with the first slide bearings (1) being slidably connected, and the both ends of the groove (11) are connected by bearing
There is threaded rod (12), the mode that threaded rod (12) is connected through a screw thread with the first sliding rail (13) is connected, the workbench
(15) side is provided with the second motor (17), and the output shaft of the second motor (17) runs through the side of workbench (15), and second
The output shaft of motor (17) is connected with one end of threaded rod (12), and the upper surface of first slide bearings (1) passes through bolt
Two the first electric expansion bars (2) are connected with, U-shaped fixed mount (3) is provided between the telescopic end of the first electric expansion bar (2), it is U-shaped
The lower end transverse slat upper surface center of fixed mount (3) is provided with support base (21), the upper end transverse slat lower surface center of U-shaped fixed mount (3)
Provided with the second electric expansion bar (19), the telescopic end of the second electric expansion bar (19) is provided with and presses head (20), press head (20) with
Support base (21) corresponds to up and down, and the upper surface both ends of the workbench (15) are provided with end otic placode (9), described to state workbench (15)
Upper surface both sides be provided with the second sliding rail (16), slidably connect the second of L-type structure on the second sliding rail (16)
Slide bearings (14), Telescopic-cylinder bar is provided between the side of the second slide bearings (14) and the side of end otic placode (9)
(8), the upper surface of second slide bearings (14) is provided with the first motor (7), and the output shaft of the first motor (7) runs through second
The vertical plate side of slide bearings (14), and the end of the output shaft of the first motor (7) is provided with rotating disk (10), rotating disk (10)
Side polishing pad (4) is connected with by telescopic spring bar (5), the side of the workbench (15) is provided with air pump (6) and PLC controls
Device (18) processed, the outlet of air pump (6) are connected by conduit with the import of Telescopic-cylinder bar (8), the PLC (18) it is defeated
Enter the output end of end electrical connection external power source, the output end electrical connection air pump (6) of PLC (18), the second motor (17), the
The input of one electric expansion bar (2), the first motor (7) and the second electric expansion bar (19).
A kind of 2. horizontal two-sided sander of adjustable butterfly valve plate according to claim 1, it is characterised in that：The work
The lower surface corner for making platform (15) is provided with supporting leg, and the lower end of supporting leg is provided with connection runners.
A kind of 3. horizontal two-sided sander of adjustable butterfly valve plate according to claim 1, it is characterised in that：The bullet
The number of spring expansion link (5) is four, and four telescopic spring bars (5) are uniformly distributed around the center of rotating disk (10).
A kind of 4. horizontal two-sided sander of adjustable butterfly valve plate according to claim 1, it is characterised in that：The gas
Junction between cylinder expansion link (8) and end otic placode (9) is provided with pressure sensor, the output end electrical connection of pressure sensor
The input of PLC (18).
A kind of 5. horizontal two-sided sander of adjustable butterfly valve plate according to claim 1, it is characterised in that：The pressure
The lower surface and the upper surface of support base (21) of dynamic head (20) are connected with rubber pad by colloid, are set on the outside of rubber pad
There are anti-slip veins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003472.2A CN107639481A (en) | 2017-10-24 | 2017-10-24 | A kind of horizontal two-sided sander of adjustable butterfly valve plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003472.2A CN107639481A (en) | 2017-10-24 | 2017-10-24 | A kind of horizontal two-sided sander of adjustable butterfly valve plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107639481A true CN107639481A (en) | 2018-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711003472.2A Pending CN107639481A (en) | 2017-10-24 | 2017-10-24 | A kind of horizontal two-sided sander of adjustable butterfly valve plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107639481A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326655A (en) * | 2018-03-21 | 2018-07-27 | 吴林 | A kind of grinding device of valve plate |
| CN108406583A (en) * | 2018-01-31 | 2018-08-17 | 郑州博尔德磨料磨具有限公司 | It is a kind of with anti-impact and the strong grinding device of stability |
| CN108942482A (en) * | 2018-07-18 | 2018-12-07 | 重庆旺豹商贸有限公司 | Automobile parts grinding device |
| CN110695775A (en) * | 2019-11-04 | 2020-01-17 | 辽宁科技大学 | A device and process for ultrasonic grinding of double-sided panel parts |
| CN110744431A (en) * | 2019-11-18 | 2020-02-04 | 浙江工业大学 | Pressure detection system for linear hydraulic pressure polishing device |
| CN110763460A (en) * | 2019-12-06 | 2020-02-07 | 科达阀门科技有限公司 | Be used for turbine butterfly valve intelligence to rectify adjusting device |
| CN110814927A (en) * | 2019-12-03 | 2020-02-21 | 无锡杰凯成新材料有限公司 | Plastic grinding machine |
| CN110842758A (en) * | 2019-12-18 | 2020-02-28 | 辽宁科技大学 | Mechanism for double-sided grinding and polishing the surface of plate parts |
| CN111618683A (en) * | 2020-05-28 | 2020-09-04 | 马槐苗 | Polishing equipment with adjustable two-sided depth of plate |
| CN112792639A (en) * | 2021-04-09 | 2021-05-14 | 新乡职业技术学院 | Automatic end beam plane detection grinding device |
| CN114310532A (en) * | 2022-03-14 | 2022-04-12 | 徐州奥星新型建材有限公司 | Concrete precast slab top layer grinding device |
| CN115106905A (en) * | 2022-08-01 | 2022-09-27 | 济南鑫德石通精密机械有限公司 | Numerical control linear guide grinding machine |
| CN117921496A (en) * | 2024-03-22 | 2024-04-26 | 华侨大学 | A ceramic lampshade automatic processing equipment |
| CN118654133A (en) * | 2024-08-14 | 2024-09-17 | 永嘉铭轩机械科技有限公司 | A hydraulic engineering control valve |
| CN119369255A (en) * | 2024-12-27 | 2025-01-28 | 江西荧光磁业有限公司 | A highly adaptable grinding and processing device for producing NdFeB magnets |
-
2017
- 2017-10-24 CN CN201711003472.2A patent/CN107639481A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108406583A (en) * | 2018-01-31 | 2018-08-17 | 郑州博尔德磨料磨具有限公司 | It is a kind of with anti-impact and the strong grinding device of stability |
| CN108326655B (en) * | 2018-03-21 | 2019-10-01 | 靖江市长源液压机械有限公司 | A kind of grinding device of valve plate |
| CN108326655A (en) * | 2018-03-21 | 2018-07-27 | 吴林 | A kind of grinding device of valve plate |
| CN108942482A (en) * | 2018-07-18 | 2018-12-07 | 重庆旺豹商贸有限公司 | Automobile parts grinding device |
| CN110695775A (en) * | 2019-11-04 | 2020-01-17 | 辽宁科技大学 | A device and process for ultrasonic grinding of double-sided panel parts |
| CN110744431B (en) * | 2019-11-18 | 2024-05-03 | 浙江工业大学 | Pressure detection system for linear hydrodynamic polishing device |
| CN110744431A (en) * | 2019-11-18 | 2020-02-04 | 浙江工业大学 | Pressure detection system for linear hydraulic pressure polishing device |
| CN110814927A (en) * | 2019-12-03 | 2020-02-21 | 无锡杰凯成新材料有限公司 | Plastic grinding machine |
| CN110763460A (en) * | 2019-12-06 | 2020-02-07 | 科达阀门科技有限公司 | Be used for turbine butterfly valve intelligence to rectify adjusting device |
| CN110842758A (en) * | 2019-12-18 | 2020-02-28 | 辽宁科技大学 | Mechanism for double-sided grinding and polishing the surface of plate parts |
| CN111618683A (en) * | 2020-05-28 | 2020-09-04 | 马槐苗 | Polishing equipment with adjustable two-sided depth of plate |
| CN112792639A (en) * | 2021-04-09 | 2021-05-14 | 新乡职业技术学院 | Automatic end beam plane detection grinding device |
| CN114310532B (en) * | 2022-03-14 | 2022-05-20 | 徐州奥星新型建材有限公司 | Concrete precast slab top layer grinding device |
| CN114310532A (en) * | 2022-03-14 | 2022-04-12 | 徐州奥星新型建材有限公司 | Concrete precast slab top layer grinding device |
| CN115106905A (en) * | 2022-08-01 | 2022-09-27 | 济南鑫德石通精密机械有限公司 | Numerical control linear guide grinding machine |
| CN115106905B (en) * | 2022-08-01 | 2023-10-13 | 济南鑫德石通精密机械有限公司 | Numerical control linear guide rail grinding machine |
| CN117921496A (en) * | 2024-03-22 | 2024-04-26 | 华侨大学 | A ceramic lampshade automatic processing equipment |
| CN117921496B (en) * | 2024-03-22 | 2024-06-07 | 华侨大学 | Automatic processing equipment for ceramic lamp shade |
| CN118654133A (en) * | 2024-08-14 | 2024-09-17 | 永嘉铭轩机械科技有限公司 | A hydraulic engineering control valve |
| CN119369255A (en) * | 2024-12-27 | 2025-01-28 | 江西荧光磁业有限公司 | A highly adaptable grinding and processing device for producing NdFeB magnets |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180130 |
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| WD01 | Invention patent application deemed withdrawn after publication |