CN207512286U - Diamond band saw blade sand device - Google Patents
Diamond band saw blade sand device Download PDFInfo
- Publication number
- CN207512286U CN207512286U CN201721431520.3U CN201721431520U CN207512286U CN 207512286 U CN207512286 U CN 207512286U CN 201721431520 U CN201721431520 U CN 201721431520U CN 207512286 U CN207512286 U CN 207512286U
- Authority
- CN
- China
- Prior art keywords
- band saw
- annular groove
- connecting rod
- saw blade
- sand device
- 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
- 239000004576 sand Substances 0.000 title claims abstract description 30
- 239000010432 diamond Substances 0.000 title claims abstract description 26
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 26
- 239000011159 matrix material Substances 0.000 claims abstract description 34
- 238000007747 plating Methods 0.000 claims abstract description 16
- 239000012452 mother liquor Substances 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims abstract description 4
- 230000008676 import Effects 0.000 claims abstract description 4
- 230000003287 optical effect Effects 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The utility model creation provides a kind of diamond band saw blade sand device, including annular groove, hangs the annular gauze case being sheathed in annular groove, supporting rack, with saw matrix retainer ring and the connecting rod on supporting rack;Annular groove is equipped with the plating solution connected with mother liquor tank cycle and imports and exports;The anode being connect with positive pole is equipped in annular groove;Band saw matrix retainer ring is set in annular gauze case, and band saw matrix retainer ring upper surface circumferentially offers band saw and is inserted into seam, and two madial walls that seam is inserted into saw are equipped with flexible fastening pad;Connecting rod is horizontally disposed with, and both ends, which are inserted into band saw matrix retainer ring after bending downward and are sawed with band, is inserted into seam connection, and connecting rod is conductive material, and connecting rod is connect by conducting slip ring with power cathode.The utility model, which creates the diamond band saw blade sand device, to be had the advantages that upper sand is uniformly secured, can efficiently recycle diadust, effectively save diadust usage amount.
Description
Technical field
The invention belongs to band-saw diamond production equipment field, is filled more particularly, to sand on a kind of diamond band saw blade
It puts.
Background technology
With the extensive use of hard brittle material such as silicon crystal, sapphire, stone material etc., the technique for cutting these materials also obtains
More and more attention are arrived, diamond band saw blade is the important tool for processing silicon crystal material, and diamond band saw blade is usually
It is micro- fixing one layer of diamond with electro-deposition at the cutting edge on saw matrix made of stainless steel material using diadust as abrasive material
Powder forms, and diamond band saw blade is used on a large scale with the advantages that its cutting is sharp, hardness is strong, energy conservation and environmental protection.Upper sand
Process is the important ring in diamond band saw blade production, and also there is upper sand is uneven, insecure, Buddha's warrior attendant for existing upper sand equipment
The problem of difficult waste of stone micro mist recycling is serious.
Invention content
In view of this, the invention be directed to a kind of upper sand uniformly securely, can efficiently recycle diadust,
The diamond band saw blade sand device of effectively save diadust usage amount, to solve the above problems.
In order to achieve the above objectives, the technical solution of the invention is realized in:
A kind of diamond band saw blade sand device, the annular gauze being sheathed on including annular groove, suspension in the annular groove
Case, supporting rack, with the saw matrix retainer ring and connecting rod on supporting rack;The side wall lower ends of the annular groove be equipped with plating solution into
Mouthful, sidewall upper is exported equipped with plating solution, and plating solution inlet and outlet are connected with mother liquor tank cycle;The annular groove outer shroud inner wall be equipped with
The anode of positive pole connection;The band saw matrix retainer ring is set in the annular gauze case, and the band saw matrix is fixed
Ring upper surface circumferentially offers band saw and is inserted into seam, and two madial walls that the band saw is inserted into seam are equipped with flexible fastening pad;Institute
It states connecting rod to be horizontally disposed with, both ends are inserted into the band saw matrix retainer ring after bending downward and saw with the band and are inserted into
Seam connection, the connecting rod are conductive material, and the connecting rod is connect by conducting slip ring with power cathode.
Further, several air inlet pipe are also provided on the side wall of the annular groove, the air inlet pipe is circumferentially uniformly divided
It is distributed in the lower end of the annular groove sidewall.
Further, agitating device is equipped in the annular groove.
Further, several button-shaped vibrators are evenly arranged on the madial wall of the annular groove.
Further, the anode is the titanium frame being connect with positive pole, and nickel stick is equipped in titanium frame.
Further, lifting gear is additionally provided on support frame as described above, the connecting rod is connect with the lifting gear.
Further, the lifting gear includes lift servo motor, leading screw, is oriented to optical axis, is vertically connected with plate and consolidates
Fixed board;The fixed plate is set to the top of support frame as described above;The leading screw passes vertically through the fixed plate, the silk of the leading screw
Thick stick nut is fixedly installed in the fixed plate, and the upper and lower ends of the leading screw are connect respectively with the plate that is vertically connected with;It is described
Lift servo motor is fixed on upper junction plate, the top of the leading screw passes through the output of shaft coupling and the lift servo motor
Axis connection;The fixed plate is equipped with several linear bearings being arranged in parallel with the leading screw, is inserted into the linear bearing
Have a guiding optical axis, the upper and lower ends for being oriented to optical axis respectively with described to be vertically connected with plate affixed;The lower connecting plate lower face
Equipped with the lap bars being connect with the connecting rod.
Further, the lap bars are conducting rod, are arranged with the conducting slip ring being connect with power cathode thereon.
Further, the outer surface of the connecting rod is coated with a layer insulating, the connecting rod and the lap bars
The position of connection and with the band saw be inserted into seam the uncoated insulating layer in connecting pin.
Relative to the prior art, a kind of diamond band saw blade sand device described in the invention has the advantage that:
(1) the annular gauze for holding diadust is equipped in the annular groove of the sand device described in the invention
Case is fixed with the band saw matrix retainer ring with saw matrix and is placed therein, and plating solution is in annular groove internal circulation flow, by annular gauze
The bottom and side of case enter in annular gauze case, multi-direction to drive springing up for diadust in annular gauze case, realize gold
Hard rock micro mist is homodisperse in annular gauze case, under the action of direct current, realizes that diamond is micro- at band saw matrix cutting edge
The upper sand of powder even compact simultaneously because diadust is positioned in annular gauze case, can effectively solve diadust
The problem of being not easily recycled in annular groove is fallen, the recycling of diadust rapidly and efficiently is realized, effectively avoids diadust
Waste reduces dosage, cost-effective;
(2) side wall lower ends of the annular groove described in the invention are evenly distributed with several air inlet pipe, are gone back in annular groove
Equipped with agitating device and button-shaped vibrator, the suspension of the diadust in plating solution can be effectively kept, differential is avoided to reunite,
Ensure good upper sand effect;The design of lifting gear realizes the automation lifting with saw matrix retainer ring, in lift servo
Under the action of motor and leading screw, moving up and down with saw matrix retainer ring is realized by connecting rod, facilitates the handling of bands for band, carries
High working efficiency.
Description of the drawings
The attached drawing for forming the part of the invention is used for providing further understanding the invention, present invention wound
The illustrative embodiments and their description made do not form the improper restriction to the invention for explaining the invention.
In attached drawing:
Fig. 1 is the structure diagram of the diamond band saw blade sand device described in the invention;
Fig. 2 is enlarged drawing at the A of Fig. 1.
Reference sign:
1- annular grooves;2- annular gauze casees;3- supporting racks;4- band saw matrix retainer rings;5- connecting rods;6- plating solution imports;
7- plating solutions export;8- conducting slip rings;9- air inlet pipe;10- agitating devices;The button-shaped vibrators of 11-;12- titanium frames;13- nickel sticks;
14- lift servo motors;15- leading screws;16- is oriented to optical axis;17- upper junction plates;18- lower connecting plates;19- fixed plates;20- is straight
Spool bearing material;21- lap bars;22- bands for band matrixes;41- band saws are inserted into seam;42- flexible fastening pads;51- insulating layers.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the invention can
To be combined with each other.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instructions such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the invention and simplifies description rather than instruction
Or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the invention.In addition, term " first ", " second " etc. are only used for description purpose, and it is not intended that instruction
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can express or implicitly include one or more this feature.In the description of the invention, unless separately
It is described, " multiple " are meant that two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection;Can be mechanical connection or electrical connection;It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments creates.
As shown in Figure 1, a kind of diamond band saw blade sand device, is sheathed on including annular groove 1, suspension in annular groove 1
Annular gauze case 2, the supporting rack 3 set on 1 circle centre position of annular groove, the lifting gear on supporting rack 3 and lifting gear connect
The connecting rod 5 that connects and with saw matrix retainer ring 4;
Wherein, 1 outer shroud side wall lower ends of annular groove be equipped with plating solution import 6, upper end be equipped with plating solution export 7, plating solution inlet and outlet with
Mother liquor tank cycle connection (being not drawn into figure);The outer shroud inner wall of annular groove 1 is equipped with the titanium frame 12 being connect with positive pole, titanium frame
Nickel stick 13 is equipped in 12;The bottom of 1 inner cavity of annular groove is equipped with agitating device 10, and side wall lower ends are evenly distributed with multiple air inlet pipe 9,
Several button-shaped vibrators 11 are also evenly arranged on the madial wall of annular groove;
Lifting gear includes lift servo motor 14, leading screw 15, is oriented to optical axis 16, is vertically connected with plate 17/18 and fixed plate
19;Fixed plate 19 is installed on the top of supporting rack 3;Leading screw 15 passes vertically through fixed plate 19, and the feed screw nut of leading screw 15 fixes peace
Loaded in fixed plate 19, the upper and lower ends of leading screw 15 are connect respectively with being vertically connected with plate 17/18;Liter is fixed on upper junction plate 17
Servo motor 14 drops, and the top of leading screw 15 passes through the output axis connection of shaft coupling and lift servo motor 14;It is set in fixed plate 19
There is the linear bearing 20 that several are arranged in parallel with leading screw 15, linear bearing 20 is interior inserted with optical axis 16 is oriented to, and is oriented to optical axis 16
Upper and lower ends respectively with to be vertically connected with plate 17/18 affixed;18 lower face of lower connecting plate is equipped with the lap bars being connect with connecting rod 5
21, lap bars 21 are conducting rod;I.e. fixed plate 19 is motionless, when lift servo motor 14 starts, is vertically connected on plate 17/18 and moves down
It is dynamic, and then connecting rod 5 is driven to move up and down;
Band saw matrix retainer ring 4 is set in annular gauze case 2, and 4 upper surface of band saw matrix retainer ring circumferentially offers
Band saw is inserted into seam 41, and two madial walls that seam 41 is inserted into saw are equipped with flexible fastening pad 42, treat the bands for band matrix 22 of sand
It is inserted into band saw to be inserted into seam 41, flexible fastening pad 42 fixes bands for band matrix 22, treats to be exposed to upward at the cutting edge of sand
Outside, flexible fastening pad 42 are made of insulating materials, and diadust is effectively avoided to fall on the non-blade port portion of bands for band matrix 22
Position;Connecting rod 5 is horizontally disposed, and both ends are inserted into band saw matrix retainer ring 4 after bending downward and are inserted into seam with stating band saw
41 connections, the i.e. both ends of connecting rod 5 are contacted with the bands for band matrix 22 being inserted into, and connecting rod 5 is made of an electrically conducting material, with equally leading
Lap bars 21 connect made of electric material, and conducting slip ring 8 is arranged in lap bars 21, and conducting slip ring 8 is connect with power cathode, i.e.,
Bands for band matrix 22 is cathode;The outer surface of connecting rod 5, which is removed with lap bars 21 and is inserted into saw, stitches 41 positions connecting, other
Part is coated with insulating layer 51.
The course of work of the invention is as follows:
Bands for band matrix 22 is inserted into band saw to be inserted into seam 41, keep at the cutting edge of bands for band matrix 22 upward and is exposed to
Outside starts lifting gear, and lifting gear drives band saw matrix retainer ring 4 to sink in annular gauze case 2 by connecting rod 5, ring
There is diadust in shape gauze case 2, annular groove 1 is connected with mother liquor tank cycle, and air inlet pipe 9 blasts compressed air, agitating device
10 and button-shaped vibrator 11 start, make diadust even suspension in annular gauze case 2 in the plating solution, conducting slip ring 8
It is connect with positive pole, i.e., bands for band matrix 22 is cathode, and under the action of anode nickel stick 13, after energization, diadust is equal
Even plating is at 22 cutting edge of bands for band matrix;After the completion of upper sand process, ring will be removed with saw matrix retainer ring 4 by starting lifting gear
Shape gauze case 2, annular gauze case 2 are overlapped in annular groove 1, and diadust therein is recycled after can directly taking out.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection domain within.
Claims (9)
1. a kind of diamond band saw blade sand device, it is characterised in that:The annular groove is sheathed on including annular groove (1), suspension
(1) annular gauze case (2), supporting rack (3) in, with saw matrix retainer ring (4) and the connecting rod (5) on supporting rack (3);
The side wall lower ends of the annular groove (1) be equipped with plating solution import (6), sidewall upper be equipped with plating solution export (7), plating solution inlet and outlet with
Mother liquor tank cycle connection;Annular groove (1) the outer shroud inner wall is equipped with the anode being connect with positive pole;The band saw matrix is fixed
Ring (4) is set in the annular gauze case (2), and described band saw matrix retainer ring (4) upper surface circumferentially offers band saw and inserts
Enter seam (41), two madial walls that the band saw is inserted into seam (41) are equipped with flexible fastening pad (42);The connecting rod (5) is horizontal
Setting, both ends, which are inserted into the band saw matrix retainer ring (4) after bending downward and are sawed with the band, is inserted into seam (41) even
It connects, the connecting rod (5) is conductive material, and the connecting rod (5) is connect by conducting slip ring (8) with power cathode.
2. a kind of diamond band saw blade sand device according to claim 1, it is characterised in that:The annular groove (1)
Several air inlet pipe (9) are also provided on side wall, the air inlet pipe (9) is uniformly distributed circumferentially in the annular groove (1) side wall
Lower end.
3. a kind of diamond band saw blade sand device according to claim 1, it is characterised in that:In the annular groove (1)
Equipped with agitating device (10).
4. a kind of diamond band saw blade sand device according to claim 1, it is characterised in that:The annular groove (1)
Several button-shaped vibrators (11) are evenly arranged on madial wall.
5. a kind of diamond band saw blade sand device according to claim 1, it is characterised in that:The anode is and power supply
The titanium frame (12) of anode connection, titanium frame (12) is interior to be equipped with nickel stick (13).
6. according to a kind of diamond band saw blade sand device of claim 1 to 5 any one of them, it is characterised in that:The branch
Lifting gear is additionally provided on support (3), the connecting rod (5) connect with the lifting gear.
7. a kind of diamond band saw blade sand device according to claim 6, it is characterised in that:The lifting gear includes
Lift servo motor (14), is oriented to optical axis (16), is vertically connected with plate (17,18) and fixed plate (19) leading screw (15);The fixation
Plate (19) is set to the top of support frame as described above (3);The leading screw (15) passes vertically through the fixed plate (19), the leading screw
(15) feed screw nut is fixedly installed in the fixed plate (19), the upper and lower ends of the leading screw (15) respectively with it is described up and down
Connecting plate (17,18) connects;The lift servo motor (14) is fixed on the upper junction plate (17), the leading screw (15)
Top passes through shaft coupling and the output axis connection of the lift servo motor (14);The fixed plate (19) be equipped with several with
The linear bearing (20) that the leading screw (15) is arranged in parallel, interior be inserted into of the linear bearing (20) are stated guiding optical axis (16),
The upper and lower ends for being oriented to optical axis (16) respectively with described to be vertically connected with plate (17,18) affixed;Under the lower connecting plate (18)
End face is equipped with the lap bars (21) being connect with the connecting rod (5).
8. a kind of diamond band saw blade sand device according to claim 7, it is characterised in that:The lap bars (21) are
Conducting rod is arranged with the conducting slip ring (8) being connect with power cathode thereon.
9. a kind of diamond band saw blade sand device according to claim 8, it is characterised in that:The connecting rod (5)
Outer surface is coated with a layer insulating (51), position that the connecting rod (5) connect with the lap bars (21) and with the band
Saw is inserted into the seam uncoated insulating layer in (41) connecting pin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721431520.3U CN207512286U (en) | 2017-10-31 | 2017-10-31 | Diamond band saw blade sand device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201721431520.3U CN207512286U (en) | 2017-10-31 | 2017-10-31 | Diamond band saw blade sand device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN207512286U true CN207512286U (en) | 2018-06-19 |
Family
ID=62537843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201721431520.3U Expired - Fee Related CN207512286U (en) | 2017-10-31 | 2017-10-31 | Diamond band saw blade sand device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN207512286U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109321958A (en) * | 2018-11-30 | 2019-02-12 | 天津鑫凯建业科技有限公司 | A kind of efficient sand device of electroplating diamond wire saw |
-
2017
- 2017-10-31 CN CN201721431520.3U patent/CN207512286U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109321958A (en) * | 2018-11-30 | 2019-02-12 | 天津鑫凯建业科技有限公司 | A kind of efficient sand device of electroplating diamond wire saw |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN207857849U (en) | A kind of quantitative automatic feeder equipment of metallurgical powder | |
CN207512286U (en) | Diamond band saw blade sand device | |
CN204339530U (en) | Roller electropolishing equipment | |
CN216745088U (en) | White corundum abrasive material cooling device | |
CN106149022A (en) | A kind of upper sand equipment of electroplated diamond line | |
CN210516693U (en) | Automatic lifting device | |
CN205887706U (en) | Fitment is with high -efficient flattening device of crooked iron plate | |
CN204918814U (en) | Diamond wire saw's device is electroplated in preparation | |
CN216940089U (en) | A repair face and groove integral type equipment for carborundum processing | |
CN204058637U (en) | A kind of micro electric coating apparatus of short run pcb board | |
CN211246888U (en) | Device for preparing graphene dispersion slurry | |
CN203462152U (en) | Diamond grinding wheel electroplating bath with automatic sand feeder | |
CN206345652U (en) | A kind of environmental type is used for the charging device of papermaking pulper | |
CN105442007A (en) | Efficient brush plating equipment for vacuum arc-extinguishing chamber | |
CN211514229U (en) | Zirconia powder recovery unit | |
CN210388782U (en) | Grinding equipment for ceramic machining | |
CN210367988U (en) | Full-automatic continuous electroplating equipment | |
CN209317778U (en) | A kind of hardened processor of grain face | |
CN208426950U (en) | A kind of spiral mixer | |
CN214210399U (en) | Stirring device for metal smelting furnace | |
CN215163171U (en) | Feeding device for wire rod surface treatment | |
CN216274242U (en) | Mould steel heat treatment cooling device | |
CN211837875U (en) | Bottom supporting structure of stirrer of composite titanium reaction kettle | |
CN220485882U (en) | Electroplating device for efficient metal surface treatment | |
CN208277151U (en) | A kind of manufacturing device of anti-electrostatic ceramic material |
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: 20180619 |
|
CF01 | Termination of patent right due to non-payment of annual fee |