CN110238749A - A kind of ball grinder - Google Patents
A kind of ball grinder Download PDFInfo
- Publication number
- CN110238749A CN110238749A CN201910597795.1A CN201910597795A CN110238749A CN 110238749 A CN110238749 A CN 110238749A CN 201910597795 A CN201910597795 A CN 201910597795A CN 110238749 A CN110238749 A CN 110238749A
- Authority
- CN
- China
- Prior art keywords
- cabinet
- groups
- lead screw
- plate
- grinding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/02—Lapping machines or devices; Accessories designed for working surfaces of revolution
- B24B37/025—Lapping machines or devices; Accessories designed for working surfaces of revolution designed for working spherical surfaces
-
- 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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/34—Accessories
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a kind of ball grinders, the cabinet with hollow cavity including being in rectangular parallelepiped structure, one group of vertical side of the cabinet is hinged with the chamber door for seal case by hinge, the bottom face quadrangle of cabinet is mounted on supporting leg, the inside both ends of the cabinet are symmetrically installed with vertical lead screw, the upper and lower ends of the lead screw are plugged in the inner shaft of fixed bearing block, the fixed bearing block is respectively welded on the bottom wall of cabinet and the two sides of roof, and equal fixing sleeve is connected to two groups of Limit Bearing seats on every group of lead screw, screw thread, which is gone back, between Limit Bearing seat described in two groups on one group of lead screw is socketed with lifter plate, the top of the lifter plate is equipped with grinding motor.The ball grinder, makes to adapt to various sizes of ball to carry out grinding use, improves the range of adaptation, and can make the more uniform of grinding, improves the efficiency of discharging.
Description
Technical field
The invention belongs to ball production and processing equipment technical fields, and in particular to a kind of ball grinder.
Background technique
Ball, which is called, makees steel ball, is the indispensable part of bearing industry, and steel ball is although small, but in the world of transmission it
Carrying and the service life it is critically important, production technology directly affects product quality.The production of steel ball mainly comprises the following steps that
Wire drawing, cold-heading, abrading-ball, heat treatment, reinforcing, hard grind, early grind, flaw detection, cleaning and the derusting packaging of raw material.During these,
Either abrading-ball, hard grind or early grind require that ball surface will be handled to, removed the ring on ball base surface using grinder
Band improves steel ball surface quality and shape, and it is made to obtain final improvement.
But existing ball grinder can not adapt to various sizes of ball mostly and use, lead during the grinding process
The raising of cost is caused, while ball is after the completion of grinding, is manual cleaning mostly, has not only wasted artificial labour, but also
The efficiency for reducing discharging leads to the efficiency for influencing to grind.
Summary of the invention
The purpose of the present invention is to provide a kind of ball grinders, to solve the problems mentioned in the above background technology.
It to achieve the above object, the invention provides the following technical scheme: a kind of ball grinder, including is in rectangular parallelepiped structure
The cabinet with hollow cavity, one group of vertical side of the cabinet is hinged with the chamber door for seal case by hinge,
The bottom face quadrangle of cabinet is mounted on supporting leg, and the inside both ends of the cabinet are symmetrically installed with vertical lead screw, the lead screw
Upper and lower ends be plugged in the inner shaft of fixed bearing block, the fixed bearing block is respectively welded at the bottom wall and roof of cabinet
Two sides on, and equal fixing sleeve is connected to two groups of Limit Bearing seats, Limit Bearing described in two groups on one group of lead screw on every group of lead screw
Screw thread is gone back between seat and is socketed with lifter plate, and the top of the lifter plate is equipped with grinding motor, and the arbor for grinding motor passes through
Lifter plate, and the abrasive disk with the arbor coaxial arrangement for grinding motor is fixedly installed in the bottom end of lifter plate；
Fixed plate is additionally provided in cabinets cavity below the abrasive disk, the upper surface of the fixed plate offers between two parties
Vertically communicated transversal cross-section is in the cascade groove of rectangle, and the upper end of the cascade groove is provided with putting of matching therewith
Plate is set, the bottom face quadrangle of the placement plate is fixedly welded with attachment lug, and the bottom end of the attachment lug is connected with
Support rod, the bottom end of the support rod are equipped with electric pushrod, and are socketed with bullet on the electric pushrod telescopic end below support rod
Spring.
Preferably, the equal fixing sleeve in the top of lead screw described in two groups is connected to driven gear, and the upper surface of the cabinet is also installed
There is driving motor, the arbor of the driving motor passes through the roof of body, and fixing sleeve is connected to driving gear, the master in body
Pass through transmission toothed chain transmission connection between moving gear and two groups of driven gears.
Preferably, it is greater than lifting positioned at the distance between the Limit Bearing seat of every group of lead screw upper end and fixed bearing block
The distance between the top and driving gear bottom end of grinding motor, the limit positioned at every group of lead screw lower end when plate rises to the top
Position bearing block one side passes through connecting rod and the lateral surface of fixed plate is welded and fixed.
Preferably, be also equipped with inclined bottom plate on the inner cavity bottom face of the cabinet, the bottom plate towards chamber door one
Side is arranged diagonally downward, and the bottom end of fixed bearing block described in two groups and four groups of electric pushrods embeds in the soleplate.
Preferably, the placement plate is rectangular plate-like structure, and the upper surface of placement plate is also provided with transversal cross-section in disk
The grinding groove of shape, the diameter of the grinding groove and the diameter of abrasive disk are identical, and grinding groove is correspondingly arranged vertically with abrasive disk.
Preferably, the upper surface of support rod described in four groups offers ear slot, and ear slot is inserted into the bottom end of the attachment lug
In, and the pin shaft being supported on ear slot two sidewalls is inserted in the earhole of attachment lug, and be flexibly connected by pin shaft.
Preferably, the lower end surface of the support rod is internally provided with cylindrical inner hole, the telescopic end of the electric pushrod
Top plugs in the inner hole of support rod lower end, and setting is slided in inner hole, and the big ting model of electric pushrod described in four groups is identical,
And close to two groups of electric pushrod synchronously controls of chamber door, two groups of electric pushrods also synchronously control far from chamber door.
Technical effect and advantage of the invention: the ball grinder, by being provided with two groups of lead screws, two groups of silks in cabinet
Screw thread is socketed with lifter plate on thick stick, abrasive disk is equipped with below lifter plate, and abrasive disk relies on the transmission of lifter plate and lead screw,
It is moved up and down in cabinet, so as to adjust the distance between the placement plate in abrasive disk and fixed plate, makes to adapt to different rulers
Very little ball carries out grinding use, improves the range of adaptation；Simultaneous grinding disk can also have grinding motor to drive rotation, grinding
The bottom end of disk can make the more uniform of grinding on the grinding groove of placement plate；In addition the bottom end of placement plate is provided with support rod,
And be flexibly connected by attachment lug with the top of support rod, the bottom end of support rod is connected with electric pushrod, the bottom of electric pushrod
End elastic telescopic in support rod, thus when pressing to abrasive disk above grinding groove, it can be by electric pushrod in support rod
Interior elastic telescopic makes the more abundant of grinding, and firmly, after the completion of simultaneous grinding, electric pushrod can be by placement plate retaining plate
Cascade groove in, and stretched by two groups of electric pushrods, two groups are fixed, carry out the ball in placement plate to facilitate
Discharging improves the efficiency of discharging, after the completion of avoiding grinding, the problem of discharging inconvenience, and electronic discharging, also save work
The labor intensity of work.
Detailed description of the invention
Fig. 1 is schematic internal view of the invention；
Fig. 2 is box structure diagram of the invention；
Fig. 3 is fixed plate structure schematic diagram of the invention；
Fig. 4 is the enlarged drawing of structure at A in Fig. 1 of the invention；
Fig. 5 is the enlarged drawing of structure at B in Fig. 1 of the invention.
In figure: 1 cabinet, 2 supporting legs, 3 fixed bearing blocks, 4 Limit Bearing seats, 5 lead screws, 6 driving motors, 7 driven gears, 8
Driving gear, 9 transmission toothed chains, 10 grinding motors, 11 lifter plates, 12 abrasive disks, 13 fixed plates, 14 placement plates, 15 grinding grooves, 16
Electric pushrod, 17 support rods, 18 chamber doors, 19 cascade grooves, 20 bottom plates, 21 springs, 22 attachment lugs, 23 ear slots, 24 pin shafts.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of ball grinders as shown in Figs. 1-5, including having in hollow in rectangular parallelepiped structure
One group of vertical side of the cabinet 1 of chamber, the cabinet 1 is hinged with the chamber door 18 for seal case 1 by hinge, cabinet 1
Bottom face quadrangle is mounted on supporting leg 2, and the inside both ends of the cabinet 1 are symmetrically installed with vertical lead screw 5, the lead screw 5
Upper and lower ends are plugged in the inner shaft of fixed bearing block 3, and the fixed bearing block 3 is respectively welded at bottom wall and the top of cabinet 1
On the two sides of wall, and equal fixing sleeve is connected to two groups of Limit Bearing seats 4 on every group of lead screw 5, limits described in two groups on one group of lead screw 5
Screw thread is gone back between bearing block 4 and is socketed with lifter plate 11, and the top of the lifter plate 11 is equipped with grinding motor 10, and grinds motor
10 arbor passes through lifter plate 11, and is fixedly installed with and the arbor coaxial arrangement of grinding motor 10 in the bottom end of lifter plate 11
Abrasive disk 12；
It is additionally provided with fixed plate 13 in 1 inner cavity of cabinet of 12 lower section of abrasive disk, the upper surface of the fixed plate 13 occupies
In offer vertically communicated transversal cross-section be in rectangle cascade groove 19, the upper end of the cascade groove 19 be provided with
The placement plate 14 to match, the bottom face quadrangle of the placement plate 14 is fixedly welded with attachment lug 22, the engaging lug
The bottom end of piece 22 is connected with support rod 17, and the bottom end of the support rod 17 is equipped with electric pushrod 16, and under support rod 17
Spring 21 is socketed on 16 telescopic end of electric pushrod of side.
Specifically, the equal fixing sleeve in the top of lead screw 5 described in two groups is connected to driven gear 7, the upper surface of the cabinet 1 is also pacified
Equipped with driving motor 6, the arbor of the driving motor 6 passes through the roof of body, and fixing sleeve is connected to driving gear 8 in body,
It is sequentially connected between the driving gear 8 and two groups of driven gears 7 by transmission toothed chain 9, to complete one group of 6 band of driving motor
The rotation of dynamic two groups of lead screws, and then the transmission of lead screw 5 is completed, and driving motor 6 preferably uses servo motor.
Specifically, the distance between the Limit Bearing seat 4 and the fixed bearing block 3 that are located at every group of 5 upper end of lead screw are greater than
The distance between the top and 8 bottom end of driving gear of grinding motor 10, guarantee that lifter plate 11 exists when lifter plate 11 rises to the top
During adjusting movement, grinding motor 10 will not collide with driving gear 8, described in every group of 5 lower end of lead screw
The lateral surface that 4 one side of Limit Bearing seat passes through connecting rod and fixed plate 13 is welded and fixed, enable fixed plate 13 according to
The connection of Limit Bearing seat 4 is horizontally fixed in cabinet 1.
Specifically, be also equipped with inclined bottom plate 20 on the inner cavity bottom face of the cabinet 1, the bottom plate 20 is towards chamber door
18 one side is arranged diagonally downward, and the bottom end of fixed bearing block 3 and four groups of electric pushrods 16 described in two groups is embedded in bottom
In plate 20, the setting of bottom plate 20 can be in ball discharging, and ball is tilted discharging in the bottom of cabinet 1, then by bottom plate by diameter
20 inclination, is conveniently collected, and 20 preferred rubber plate of bottom plate.
Specifically, the placement plate 14 is rectangular plate-like structure, the upper surface of placement plate 14 is also provided with transversal cross-section and is in
The diameter of discoid grinding groove 15, the grinding groove 15 is identical as the diameter of abrasive disk 12, and grinding groove 15 and abrasive disk 12
It is correspondingly arranged vertically, guarantees the ball in grinding groove 15, can all be ground disk 12 and be ground, make more filling for grinding
Point, avoid the problem that grinding when occur partial mill less than.
Specifically, the upper surface of support rod 17 described in four groups offers ear slot 23, the bottom end of the attachment lug 22 is inserted
Enter in ear slot 23, and is inserted with the pin shaft 24 being supported on 23 two sidewalls of ear slot in the earhole of attachment lug 22, and pass through pin shaft
24 are flexibly connected (as shown in Figure 5), and when can guarantee that two groups of electric pushrods 16 stretch, placement plate 14 can facilitate inclination, from
And easy-unloading.
Specifically, the lower end surface of the support rod 17 is internally provided with cylindrical inner hole, the electric pushrod 16 is stretched
Contracting end top plugs in the inner hole of 17 lower end of support rod, and setting, the equal size of electric pushrod 16 described in four groups are slided in inner hole
Model is identical, and close to two groups of 16 synchronously controls of electric pushrod of chamber door 18, two groups of electric pushrods 16 far from chamber door 18 are also same
Step control, so as to adjust the stretching, extension of two groups of electric pushrods 16, in addition two groups it is motionless, placement plate 14 is subjected to inclination discharging.
Specifically, the ball grinder is first turned on chamber door 18, ball is placed into grinding for placement plate 14 in grinding
In slot grinding 15, the bottom end of placement plate 14 is not contacted with the 19 ladder upper end of cascade groove of fixed plate 13 at this time, after the completion of placement,
Driving motor 6 is opened again, driving motor 6 works, by the engaged transmission between gear, rotated while driving two groups of lead screw 5,
To make lifter plate 11 move downward on lead screw 5 by 5 transmission principle of lead screw, until abrasive disk 12 starts to contact ball, and
Slightly ball is pushed, when ball pushes, can be made electronic by the extruding of 17 shape paired springs 21 of placement plate 14 and support rod
The top of push rod 16 is protruded into support rod 17, more abundant when guaranteeing to grind, is opened grinding motor 10 again at this time, is ground motor
10 drive the rotation of abrasive disk 12, so that the surface to ball carries out quick spin finishing, after the completion of grinding, again by biography
The rotation of dynamic motor 6, is increased to initial position for abrasive disk 12 and lifter plate 11, opens stretching for four groups of motor push rods 16 at this time
Exhibition, ejects cascade groove 19 for placement plate 14, and the two groups of electric pushrods 16 adjusted at this time close to chamber door 18 stretch, and in addition two groups
Motionless (or on the contrary can also with) makes placement plate 14 start to tilt to one end, thus roll out the ball in grinding groove 15 all, and
It falls on the bottom plate 20 of rubber material, bottom plate 20 tilted is finally gathered close to one end of chamber door 18, and is concentrated
It collects.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (7)
1. a kind of ball grinder, the cabinet (1) with hollow cavity including being in rectangular parallelepiped structure, it is characterised in that: described
One group of vertical side of cabinet (1) is hinged with the chamber door (18) for seal case (1), the bottom face of cabinet (1) by hinge
Quadrangle is mounted on supporting leg (2), and the inside both ends of the cabinet (1) are symmetrically installed with vertical lead screw (5), the lead screw (5)
Upper and lower ends be plugged in the inner shaft of fixed bearing block (3), the fixed bearing block (3) is respectively welded at cabinet (1)
On the two sides of bottom wall and roof, and equal fixing sleeve is connected to two groups of Limit Bearing seats (4) on every group of lead screw (5), on one group of lead screw (5)
Two groups described in go back screw thread between Limit Bearing seat (4) and be socketed with lifter plate (11), the top of the lifter plate (11) is equipped with
It grinds motor (10), and the arbor for grinding motor (10) passes through lifter plate (11), and is fixedly mounted in the bottom end of lifter plate (11)
There is the abrasive disk (12) with the coaxial arrangement of the arbor of grinding motor (10)；
It is additionally provided with fixed plate (13) in cabinet (1) inner cavity below the abrasive disk (12), the upper end of the fixed plate (13)
Face offers the cascade groove (19) that vertically communicated transversal cross-section is in rectangle, the upper end of the cascade groove (19) between two parties
It is provided with the placement plate (14) to match therewith, the bottom face quadrangle of the placement plate (14) is fixedly welded with attachment lug
(22), the bottom end of the attachment lug (22) is connected with support rod (17), and the bottom end of the support rod (17) is equipped with electricity
Dynamic push rod (16), and spring (21) are socketed on electric pushrod (16) telescopic end below support rod (17).
2. a kind of ball grinder according to claim 1, it is characterised in that: the top of lead screw described in two groups (5) is solid
Surely it is socketed with driven gear (7), the upper surface of the cabinet (1) is also equipped with driving motor (6), the driving motor (6)
Arbor passes through the roof of body, and fixing sleeve is connected to driving gear (8) in body, the driving gear (8) and two groups of driven tooths
It takes turns between (7) through transmission toothed chain (9) transmission connection.
3. a kind of ball grinder according to claim 1, it is characterised in that: be located at the described of every group of lead screw (5) upper end
The distance between Limit Bearing seat (4) and fixed bearing block (3), which are greater than when lifter plate (11) rise to the top, grinds motor (10)
Top and the distance between driving gear (8) bottom end, be located at Limit Bearing seat (4) side of every group of lead screw (5) lower end
The lateral surface that face passes through connecting rod and fixed plate (13) is welded and fixed.
4. a kind of ball grinder according to claim 1, it is characterised in that: on the inner cavity bottom face of the cabinet (1)
It is also equipped with inclined bottom plate (20), the one side of bottom plate (20) towards the chamber door (18) is arranged diagonally downward, and two groups of institutes
The bottom end for stating fixed bearing block (3) and four groups of electric pushrods (16) is embedded in bottom plate (20).
5. a kind of ball grinder according to claim 1, it is characterised in that: the placement plate (14) is rectangular plate-like knot
Structure, the upper surface of placement plate (14) are also provided with transversal cross-section grinding groove in the form of annular discs (15), the grinding groove (15) it is straight
Diameter is identical as the diameter of abrasive disk (12), and grinding groove (15) is correspondingly arranged vertically with abrasive disk (12).
6. a kind of ball grinder according to claim 1, it is characterised in that: the upper surface of support rod described in four groups (17)
It offers ear slot (23), in bottom end insertion ear slot (23) of the attachment lug (22), and in the earhole of attachment lug (22)
It is inserted with the pin shaft (24) being supported on ear slot (23) two sidewalls, and is flexibly connected by pin shaft (24).
7. a kind of ball grinder according to claim 1, it is characterised in that: inside the lower end surface of the support rod (17)
It is provided with cylindrical inner hole, the telescopic end top of the electric pushrod (16) plugs in the inner hole of support rod (17) lower end, and
Setting is slided in inner hole, the big ting model of electric pushrod described in four groups (16) is identical, and two groups close to chamber door (18) are electronic
Push rod (16) synchronously control, two groups of electric pushrods (16) also synchronously control far from chamber door (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910597795.1A CN110238749A (en) | 2019-07-04 | 2019-07-04 | A kind of ball grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910597795.1A CN110238749A (en) | 2019-07-04 | 2019-07-04 | A kind of ball grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110238749A true CN110238749A (en) | 2019-09-17 |
Family
ID=67890923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910597795.1A Pending CN110238749A (en) | 2019-07-04 | 2019-07-04 | A kind of ball grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110238749A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112892805A (en) * | 2021-01-21 | 2021-06-04 | 山东益利油漆有限公司 | Grinding device for water-based epoxy resin coating |
| CN113386023A (en) * | 2021-08-17 | 2021-09-14 | 江苏优霸五金工具有限公司 | Finish machining device for forming of hardware wrench |
| CN113877705A (en) * | 2021-09-29 | 2022-01-04 | 南京澳博工业智能科技研究院有限公司 | Multistage breaker of mineral processing raw materials |
| CN115558566A (en) * | 2022-07-20 | 2023-01-03 | 吕佳 | White spirit preparation process |
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| CN104985524A (en) * | 2015-07-03 | 2015-10-21 | 浙江工业大学 | Self-adaptive and multi-degree-of-freedom adjusting mechanism for grinding and polishing workpieces |
| CN208034397U (en) * | 2018-03-13 | 2018-11-02 | 韶关市滚动轴承制造有限公司 | A kind of new-type rolling bearing ball lapping machine |
| CN208759298U (en) * | 2018-09-05 | 2019-04-19 | 深圳市金石泰科技有限公司 | A kind of Electronic Components Manufacturing grinding device |
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| JPH02279271A (en) * | 1989-04-19 | 1990-11-15 | Toshiba Corp | Ceramics work machine |
| CN2748222Y (en) * | 2004-10-15 | 2005-12-28 | 扬州赛克精密机械制造有限公司 | Hydraulic steel ball abrasive machine |
| CN203317201U (en) * | 2013-06-18 | 2013-12-04 | 浙江工业大学 | Dynamical pressure floating polishing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112892805A (en) * | 2021-01-21 | 2021-06-04 | 山东益利油漆有限公司 | Grinding device for water-based epoxy resin coating |
| CN112892805B (en) * | 2021-01-21 | 2022-08-16 | 山东益利油漆有限公司 | Grinding device for water-based epoxy resin coating |
| CN113386023A (en) * | 2021-08-17 | 2021-09-14 | 江苏优霸五金工具有限公司 | Finish machining device for forming of hardware wrench |
| CN113877705A (en) * | 2021-09-29 | 2022-01-04 | 南京澳博工业智能科技研究院有限公司 | Multistage breaker of mineral processing raw materials |
| CN115558566A (en) * | 2022-07-20 | 2023-01-03 | 吕佳 | White spirit preparation process |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190917 |
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| RJ01 | Rejection of invention patent application after publication |