CN208034315U - A kind of dust-collecting type casting high-speed sander structure - Google Patents
A kind of dust-collecting type casting high-speed sander structure Download PDFInfo
- Publication number
- CN208034315U CN208034315U CN201721816805.9U CN201721816805U CN208034315U CN 208034315 U CN208034315 U CN 208034315U CN 201721816805 U CN201721816805 U CN 201721816805U CN 208034315 U CN208034315 U CN 208034315U
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- shaft mechanism
- dust
- end cap
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model discloses a kind of dust-collecting type casting high-speed sander structures, including rotating shaft mechanism, axis pin, key seat, adjusting screw rod, motor cabinet, motor, tape handler, grinding wheel, dust collection mechanism, protective cover, turning adjusting screw rod can drive motor cabinet to be rotated along axis pin, to adjust the tensioning degree of tape handler, the outer sleeve and inner sleeve that are equipped in axle sleeve effectively improve the rigidity of shaft, so that steady when grinding wheel high-speed rotation, sealing station is inserted into seal groove and is locked using locking nut, effectively by left end cap and rotating shaft sealing, gasket is effectively by right end cap and rotating shaft sealing, so that scrap will not enter in rotating shaft mechanism when polishing, lubricating oil in rotating shaft mechanism will not flow out.The apparatus structure is simple, and not only rotating speed is high, but also in high-speed rotation, grinding wheel operates steadily, meanwhile, tape handler tensioning is quick and convenient, and can be by polishing when the flue dust, the scrap that generate be discharged, effectively purify working environment, sealed reliable, barrier propterty is good.
Description
Technical field
The utility model is related to a kind of mechanical device more particularly to a kind of dust-collecting type casting high-speed sander structures.
Background technology
After casting pouring is complete, surface can there are many overlaps, dead heads, it is necessary to these overlaps and dead head are removed, it is right
In ironcasting, generally directly knocked out with oil hammer, and steel-casting needs to be cut off with gas cutting, then by casting grinding work on casting
Overlap and the dead head polishing more stayed are clean, smooth, beautiful.Currently, polishing is usually to use electric grinding machine, have fixed big
Grinding wheel diameter sander also has hand-holdable movable small grinding wheel diameter sander, since the structure that existing sander uses is past
Toward being all that motor is directly connected to grinding wheel, reusing such drive mechanism in the wheel sander of major diameter is difficult at runtime
Reach higher rotating speed, cause grinding efficiency low, moreover, when hand sand, polishing site environment is severe, influences the body of polishing work
Body health.In view of disadvantages described above, it is really necessary to design a kind of dust-collecting type casting high-speed sander structure.
Utility model content
The purpose of this utility model is to provide a kind of dust-collecting type casting high-speed sander structure, which beats
Not only rotating speed is high for grinding machine structure, but also in high-speed rotation, grinding wheel operates steadily, meanwhile, tape handler is tensioned quick and convenient, energy
Flue dust, the scrap generated when by polishing is discharged, and effectively purifies working environment.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of dust-collecting type casting high-speed sander structure,
Including rotating shaft mechanism, axis pin, key seat, adjusting screw rod, motor cabinet, motor, tape handler, grinding wheel, dust collection mechanism, protective cover,
The axis pin is located at rotating shaft mechanism upper end, and the axis pin is connected with rotating shaft mechanism, and the axis pin runs through key seat, described
Axis pin can rotate in key seat, and the adjusting screw rod is located at rotating shaft mechanism upper end and on the outside of axis pin, the adjusting spiral shell
Bar is connected with rotating shaft mechanism screw thread, and the motor cavity is in key seat upper end and is located at adjusting screw rod upper end, the motor cabinet
It is weldingly connected with key seat, the motor is located at motor cabinet upper end, and the motor is connected with motor cabinet by bolt, described
Tape handler is located on the left of motor and on the left of rotating shaft mechanism, and the tape handler is connected with motor key and and shaft
Mechanism is connected by bolt, and the grinding wheel is located on the right side of rotating shaft mechanism, and the grinding wheel is connected with rotating shaft mechanism by bolt,
The dust collection mechanism is located on the outside of grinding wheel and on the right side of rotating shaft mechanism, and the dust collection mechanism passes through bolt with rotating shaft mechanism
It is connected, the protective cover is located on the outside of tape handler and on the left of rotating shaft mechanism, the protective cover and rotating shaft mechanism
It is connected by bolt.
The utility model further improves as follows：
Further, the adjusting screw rod quantity is 2, is symmetrically arranged along the rotating shaft mechanism.
Further, the rotating shaft mechanism further includes square chest, axle sleeve, outer sleeve, inner sleeve, shaft, left end cap, right end
Lid, the axle sleeve are located on the inside of square chest, and the axle sleeve is weldingly connected with square chest, and the outer sleeve is located on the inside of axle sleeve,
The inner sleeve is located on the inside of outer sleeve, and the shaft is located on the inside of inner sleeve and on the inside of axle sleeve, the shaft
It is rotatedly connected with axle sleeve, the left end cap is located on the left of axle sleeve and is run through by shaft, and the left end cap passes through spiral shell with axle sleeve
Bolt is connected, and the right end cap is located on the right side of axle sleeve and is run through by shaft, and the right end cap is connected with axle sleeve by bolt.
Further, the rotating shaft mechanism is additionally provided with sealing shroud, and the sealing shroud is located on the left of left end cap and is turned
Axis runs through.
Further, the rotating shaft mechanism is additionally provided with locking nut, the locking nut be located on the left of sealing shroud and
Run through by shaft, it is described run through by shaft be connected with shaft thread.
Further, the rotating shaft mechanism is additionally provided with gasket, and the gasket is located on the left of right end cap and is turned
Axis runs through.
Further, the left end cap is additionally provided with seal groove, and the seal groove is not through left end cap main body.
Further, the sealing shroud is additionally provided with sealing station, and the sealing station stretches into seal groove, the sealing
Platform is integrally connected with sealing shroud.
Further, the dust collection mechanism further includes lower housing, pin, upper cover, magnet, sweep-up pipe, polishing mouth, draws
Hand, slag trap, the lower housing are located on the left of rotating shaft mechanism, and the lower housing is connected with rotating shaft mechanism by bolt, institute
It states and is additionally provided with pin on the right side of lower housing upper end, the pin runs through upper cover, and the magnet is located on the left of upper cover, the magnetic
Iron is connected with upper cover by bolt, and the sweep-up pipe is located on the outside of lower housing, and the sweep-up pipe is weldingly connected with lower housing,
Upper end is additionally provided with polishing mouth on the left of the upper cover, and the knob is located at upper outer side of lid, and the knob passes through bolt with upper cover
It is connected, the lower housing is additionally provided with slag trap, and the lower housing is weldingly connected with slag trap, and upper cover and lower housing are by grinding wheel
It surrounds, grinding wheel is contacted with casting and polished by mouth of polishing, and the scrap that when polishing generates enters lower housing, and sweep-up pipe is pumped into
Negative pressure, to which scrap to be discharged, slag trap is used for pushing off the slag, prevents scrap excessive and enhances the intensity of lower housing, passes through
Knob can lift upper cover along cancellation rotation, consequently facilitating quickly grinding wheel is safeguarded, meanwhile, using magnet Jiang Gai under
Shell is fixed, convenient for quickly being safeguarded to grinding wheel.
Compared with prior art, the dust-collecting type casting high-speed sander structure, when work, motor is driven by tape handler
The grinding wheel high-speed rotation being connected with rotating shaft mechanism, to polish casting, what is generated when dust collection mechanism is by casting grinding is useless
Bits discharge, since axis pin can rotate in key seat, turning adjusting screw rod can drive motor cabinet to be rotated along axis pin, from
And the tensioning degree of tape handler is adjusted, since the outer sleeve and inner sleeve that are equipped in axle sleeve effectively improve the rigidity of shaft,
To effectively reduce the diameter of shaft so that it is steady when grinding wheel high-speed rotation, meanwhile, sealing station is inserted into seal groove and is used
Locking nut is locked, effectively by left end cap and rotating shaft sealing, meanwhile, gasket is effectively by right end cap and rotating shaft sealing so that beats
Scrap will not enter in rotating shaft mechanism when mill, meanwhile, the lubricating oil in rotating shaft mechanism will not flow out.The apparatus structure is simple, no
Only rotating speed is high, and in high-speed rotation, grinding wheel operates steadily, meanwhile, tape handler tensioning is quick and convenient, and can will beat
The flue dust that is generated when mill, scrap discharge, effectively purify working environment, sealed reliable, and barrier propterty is good.
Description of the drawings
Fig. 1 shows the utility model graphics
Fig. 2 shows the utility model rotating shaft mechanism sectional views
Fig. 3 shows the utility model sealing shroud sectional view
Fig. 4 shows the utility model dust collection mechanism graphics
In figure：Rotating shaft mechanism 1, axis pin 2, key seat 3, adjusting screw rod 4, motor cabinet 5, motor 6, tape handler 7, grinding wheel 8,
Dust collection mechanism 9, protective cover 10, square chest 101, axle sleeve 102, outer sleeve 103, inner sleeve 104, shaft 105, left end cap 106, right end
Lid 107, sealing shroud 108, locking nut 109, gasket 110, seal groove 111, sealing station 112, lower housing 901, pin 902,
Upper cover 903, magnet 904, sweep-up pipe 905, polishing mouth 906, knob 907, slag trap 908.
Specific implementation mode
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of dust-collecting type casting high-speed sander structure, including rotating shaft mechanism 1, axis pin 2,
Key seat 3, adjusting screw rod 4, motor cabinet 5, motor 6, tape handler 7, grinding wheel 8, dust collection mechanism 9, protective cover 10, the axis pin
2 are located at 1 upper end of rotating shaft mechanism, and the axis pin 2 is connected with rotating shaft mechanism 1, and the axis pin 2 runs through key seat 3, the axis pin
2 can rotate in key seat 3, and the adjusting screw rod 4 is located at 1 upper end of rotating shaft mechanism and positioned at 2 outside of axis pin, the adjusting spiral shell
Bar 4 is connected with 1 screw thread of rotating shaft mechanism, and the motor cabinet 5 is located at 3 upper end of key seat and is located at 4 upper end of adjusting screw rod, the electricity
Engine base 5 is weldingly connected with key seat 3, and the motor 6 is located at 5 upper end of motor cabinet, and the motor 6 passes through bolt with motor cabinet 5
It is connected, the tape handler 7 is located at 6 left side of motor and positioned at 1 left side of rotating shaft mechanism, the tape handler 7 and electricity
6 key of machine is connected and is connected by bolt with rotating shaft mechanism 1, and the grinding wheel 8 is located on the right side of rotating shaft mechanism 1, the grinding wheel 8 and
Rotating shaft mechanism 1 is connected by bolt, and the dust collection mechanism 9 is located at 8 outside of grinding wheel and positioned at 1 right side of rotating shaft mechanism, described
Dust collection mechanism 9 is connected with rotating shaft mechanism 1 by bolt, and the protective cover 10 is located at 7 outside of tape handler and is located at shaft
1 left side of mechanism, the protective cover 10 are connected with rotating shaft mechanism 1 by bolt, and 4 quantity of adjusting screw rod is 2, along institute
It states rotating shaft mechanism 1 to be symmetrically arranged, the rotating shaft mechanism 1 further includes square chest 101, axle sleeve 102, outer sleeve 103, inner sleeve
104, shaft 105, left end cap 106, right end cap 107, the axle sleeve 102 are located at the inside of square chest 101, the axle sleeve 102 with
Square chest 101 is weldingly connected, and the outer sleeve 103 is located at 102 inside of axle sleeve, and the inner sleeve 104 is located in outer sleeve 103
Side, the shaft 105 are located at 104 inside of inner sleeve and positioned at 102 insides of axle sleeve, and the shaft 105 is rotated with axle sleeve 102
It is connected, the left end cap 106 is located at 102 left side of axle sleeve and is run through by shaft 105, and the left end cap 106 is logical with axle sleeve 102
It crosses bolt to be connected, the right end cap 107 is located at 102 right side of axle sleeve and by shaft 105 is run through, the right end cap 107 and axis
Set 102 is connected by bolt, and the rotating shaft mechanism 1 is additionally provided with sealing shroud 108, and the sealing shroud 108 is located at left end cap 106
Left side and run through by shaft 105, the rotating shaft mechanism 1 is additionally provided with locking nut 109, and the locking nut 109 is located at close
The left side of big envelope 108 and run through by shaft 105, it is described run through by shaft 105 be connected with 105 screw thread of shaft, the turning engine
Structure 1 is additionally provided with gasket 110, and the gasket 110 is located at 107 left side of right end cap and is run through by shaft 105, the left end
Lid 106 is additionally provided with seal groove 111, and the seal groove 111 is additionally provided with not through 106 main body of left end cap, the sealing shroud 108
Sealing station 112, the sealing station 112 stretch into seal groove 111, and the sealing station 112 is integrally connected with sealing shroud 108,
The dust collection mechanism 9 further includes lower housing 901, pin 902, upper cover 903, magnet 904, sweep-up pipe 905, polishing mouth 906, draws
Hand 907, slag trap 908, the lower housing 901 are located at 1 left side of rotating shaft mechanism, and the lower housing 901 is logical with rotating shaft mechanism 1
It crosses bolt to be connected, pin 902 is additionally provided on the right side of 901 upper end of the lower housing, the pin 902 runs through upper cover 903, described
Magnet 904 is located at 903 left side of upper cover, and the magnet 904 is connected with upper cover 903 by bolt, and the sweep-up pipe 905 is located at
901 outside of lower housing, the sweep-up pipe 905 are weldingly connected with lower housing 901, and 903 left side upper end of the upper cover, which is additionally provided with, to be beaten
Ground 906, the knob 907 are located at 903 outside of upper cover, and the knob 907 is connected with upper cover 903 by bolt, described
Lower housing 901 be additionally provided with slag trap 908, the lower housing 901 is weldingly connected with slag trap 908, upper cover 903 and lower housing
901 surround grinding wheel 8, and grinding wheel 8 is contacted with casting and polished by mouth 906 of polishing, and the scrap that when polishing generates enters lower casing
Sweep-up pipe 905 is pumped into negative pressure by body 901, and to which scrap to be discharged, slag trap 908 is used for pushing off the slag, prevents scrap excessive and under
The intensity of shell 901 is enhanced, and can be lifted upper cover 903 along 902 rotations are nullified, consequently facilitating quickly by knob 907
Grinding wheel 8 is safeguarded, meanwhile, lid 903 and lower housing 901 are fixed using magnet 904, convenient for quickly to grinding wheel 8 into
Row safeguards that the dust-collecting type casting high-speed sander structure, when work, motor 6 drives solid with rotating shaft mechanism 1 by tape handler 7
8 high-speed rotation of grinding wheel even, to polish casting, the scrap discharge generated when dust collection mechanism 9 is by casting grinding, due to
Axis pin 2 can rotate in key seat 3, and therefore, turning adjusting screw rod 4 can drive motor cabinet 5 to be rotated along axis pin 2, to adjust
The tensioning degree of tape handler 7, since the outer sleeve 103 and inner sleeve 104 that are equipped in axle sleeve 102 effectively improve shaft 105
Rigidity, to effectively reduce shaft 105 diameter so that it is steady when 8 high-speed rotation of grinding wheel, meanwhile, sealing station 112 is inserted into
It locks in seal groove 111 and using locking nut 109, effectively seals left end cap 106 and shaft 105, meanwhile, gasket 110
Effectively right end cap 107 and shaft 105 are sealed so that scrap will not enter in rotating shaft mechanism 1 when polishing, meanwhile, rotating shaft mechanism 1
Interior lubricating oil will not flow out.The apparatus structure is simple, and not only rotating speed is high, but also in high-speed rotation, grinding wheel 8 operates steadily,
Meanwhile tape handler 7 be tensioned it is quick and convenient, and can by polishing when generate flue dust, scrap be discharged, effectively purify building ring
Border, sealed reliable, barrier propterty are good.
The utility model is not limited to above-mentioned specific embodiment, and those skilled in the art visualize from above-mentioned
Hair, without performing creative labour, the various transformation made are all fallen within the scope of protection of the utility model.
Claims (9)
1. a kind of dust-collecting type casting high-speed sander structure, it is characterised in that including rotating shaft mechanism, axis pin, key seat, adjusting screw rod, electricity
Engine base, motor, tape handler, grinding wheel, dust collection mechanism, protective cover, the axis pin are located at rotating shaft mechanism upper end, the pin
Axis is connected with rotating shaft mechanism, and the axis pin runs through key seat, and the axis pin can rotate in key seat, the adjusting screw rod position
In rotating shaft mechanism upper end and on the outside of axis pin, the adjusting screw rod is connected with rotating shaft mechanism screw thread, the motor cavity
In key seat upper end and it is located at adjusting screw rod upper end, the motor cabinet is weldingly connected with key seat, and the motor is located at motor cabinet
Upper end, the motor are connected with motor cabinet by bolt, and the tape handler is located on the left of motor and is located at turning engine
On the left of structure, the tape handler is connected with motor key and is connected by bolt with rotating shaft mechanism, and the grinding wheel, which is located at, to be turned
On the right side of axis mechanism, the grinding wheel is connected with rotating shaft mechanism by bolt, and the dust collection mechanism is located on the outside of grinding wheel and is located at
On the right side of rotating shaft mechanism, the dust collection mechanism is connected with rotating shaft mechanism by bolt, and the protective cover is located at tape handler
Outside and on the left of the rotating shaft mechanism, the protective cover is connected with rotating shaft mechanism by bolt.
2. dust-collecting type casting high-speed sander structure as described in claim 1, it is characterised in that the adjusting screw rod quantity is 2
Part is symmetrically arranged along the rotating shaft mechanism.
3. dust-collecting type casting high-speed sander structure as described in claim 1, it is characterised in that the rotating shaft mechanism further includes
Square chest, axle sleeve, outer sleeve, inner sleeve, shaft, left end cap, right end cap, the axle sleeve are located on the inside of square chest, the axle sleeve
It is weldingly connected with square chest, the outer sleeve is located on the inside of axle sleeve, and the inner sleeve is located on the inside of outer sleeve, the shaft
On the inside of inner sleeve and on the inside of axle sleeve, the shaft is rotatedly connected with axle sleeve, and the left end cap is located at an axle sleeve left side
Side and run through by shaft, the left end cap is connected with axle sleeve by bolt, and the right end cap is located on the right side of axle sleeve and is turned
Axis runs through, and the right end cap is connected with axle sleeve by bolt.
4. dust-collecting type casting high-speed sander structure as claimed in claim 3, it is characterised in that the rotating shaft mechanism is additionally provided with
Sealing shroud, the sealing shroud are located on the left of left end cap and are run through by shaft.
5. dust-collecting type casting high-speed sander structure as claimed in claim 4, it is characterised in that the rotating shaft mechanism is additionally provided with
Locking nut, the locking nut are located on the left of sealing shroud and are run through by shaft, described to be run through and shaft thread by shaft
It is connected.
6. dust-collecting type casting high-speed sander structure as claimed in claim 3, it is characterised in that the rotating shaft mechanism is additionally provided with
Gasket, the gasket are located on the left of right end cap and are run through by shaft.
7. dust-collecting type casting high-speed sander structure as claimed in claim 3, it is characterised in that the left end cap is additionally provided with close
Sealing groove, the seal groove is not through left end cap main body.
8. dust-collecting type casting high-speed sander structure as claimed in claim 4, it is characterised in that the sealing shroud is additionally provided with close
Platform is sealed, the sealing station stretches into seal groove, and the sealing station is integrally connected with sealing shroud.
9. dust-collecting type casting high-speed sander structure as described in claim 1, it is characterised in that the dust collection mechanism further includes
Lower housing, pin, upper cover, magnet, sweep-up pipe, polishing mouth, knob, slag trap, the lower housing are located on the left of rotating shaft mechanism,
The lower housing is connected with rotating shaft mechanism by bolt, is additionally provided with pin on the right side of the lower housing upper end, the pin passes through
Lid is put on, the magnet is located on the left of upper cover, and the magnet is connected with upper cover by bolt, under the sweep-up pipe is located at
Hull outside, the sweep-up pipe are weldingly connected with lower housing, and upper end is additionally provided with polishing mouth, the knob on the left of the upper cover
Positioned at upper outer side of lid, the knob is connected with upper cover by bolt, and the lower housing is additionally provided with slag trap, the lower casing
Body is weldingly connected with slag trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721816805.9U CN208034315U (en) | 2017-12-22 | 2017-12-22 | A kind of dust-collecting type casting high-speed sander structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721816805.9U CN208034315U (en) | 2017-12-22 | 2017-12-22 | A kind of dust-collecting type casting high-speed sander structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208034315U true CN208034315U (en) | 2018-11-02 |
Family
ID=63955230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721816805.9U Expired - Fee Related CN208034315U (en) | 2017-12-22 | 2017-12-22 | A kind of dust-collecting type casting high-speed sander structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208034315U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108127501A (en) * | 2017-12-22 | 2018-06-08 | 苏州苏铸重工有限公司 | A kind of dust-collecting type casting high-speed sander structure |
-
2017
- 2017-12-22 CN CN201721816805.9U patent/CN208034315U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108127501A (en) * | 2017-12-22 | 2018-06-08 | 苏州苏铸重工有限公司 | A kind of dust-collecting type casting high-speed sander structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206883349U (en) | New gear processes sanding apparatus | |
| CN208034315U (en) | A kind of dust-collecting type casting high-speed sander structure | |
| CN211636844U (en) | Chemical raw material grinding equipment for chemical industry | |
| CN107252726A (en) | A kind of high-efficiency environment friendly grinder | |
| CN207858548U (en) | A kind of energy saving dust-collecting type Pneumatic grinding machine | |
| CN108127501A (en) | A kind of dust-collecting type casting high-speed sander structure | |
| CN207930432U (en) | A kind of casting high-speed sander structure | |
| CN211540825U (en) | Automatic capstan grinding device of polisher | |
| CN106239322B (en) | A kind of water conservancy construction portable waterproof grinding device | |
| CN209565964U (en) | Polishing machine is used in a kind of processing of copper ball | |
| CN207171667U (en) | Multifunctional knife grinding machine | |
| CN203600001U (en) | Improved wall surface grinding machine | |
| CN207930437U (en) | A kind of dust-collecting type casting grinding mechanism | |
| CN213289932U (en) | Flat grinder workstation cleaning device | |
| CN206425940U (en) | A kind of efficient casting grinding device | |
| CN208034316U (en) | A kind of dust-collecting type casting floating workpiece polishing mechanism | |
| CN208589309U (en) | A kind of data line peeling waste material collection device | |
| CN106425794A (en) | Mechanism for polishing metal objects | |
| CN207788546U (en) | A kind of grinder of magnetic core of transformer | |
| CN203076052U (en) | Enclosed tissue grinding rod device | |
| CN107900830A (en) | A kind of casting high-speed sander structure | |
| CN205218844U (en) | Guard shield of polishing | |
| CN210368962U (en) | Efficiency of construction is improved pile cutter | |
| CN218137342U (en) | Pressure vessel's grinding device | |
| CN214558795U (en) | Portable natural gas line butt joint installation auxiliary device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181102 Termination date: 20191222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |