CN106271914B - A kind of automatic knife-grinding apparatus and its control system and control method - Google Patents
A kind of automatic knife-grinding apparatus and its control system and control method Download PDFInfo
- Publication number
- CN106271914B CN106271914B CN201610837196.9A CN201610837196A CN106271914B CN 106271914 B CN106271914 B CN 106271914B CN 201610837196 A CN201610837196 A CN 201610837196A CN 106271914 B CN106271914 B CN 106271914B
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- Prior art keywords
- knife
- cutter
- grinding
- grinding tool
- tool body
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Classifications
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- 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
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
- B24B3/54—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of hand or table knives
-
- 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
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
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- 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 automatic knife-grinding apparatus, including grinding tool body and grinding tool, the specific top of mill is equipped with strip gab, the lower part of strip gab is symmetrically arranged with two grinding tools along the center line of opening, the top of bar shaped is equipped with the knife-clamping device for clamping cutter, grinding tool is rotatably installed in grinding tool body by rotating bar, and rotating bar is connected with driving device；The knife that mill is particularly equipped with for placing cutter with a top strip gab side connected vertically stitches, and the two sides of knife seam are equipped with movable plate.Technical purpose of the invention be to provide a kind of grinding speed is fast, grinding precisely, enable to cutter sharper and time saving and energy saving automatic knife-grinding apparatus, and also providing enables to knife sharpening device to automatically control, enable to whet a knife quicker, the control system and control method of intelligentized automatic knife-grinding apparatus.
Description
Technical field
The present invention relates to for give tool grinding apparatus field, more particularly to a kind of automatic knife-grinding apparatus and its control
System and control method.
Background technique
With the raising of urbanization, resident living increasingly makes after being worn out among cities and towns in cutter now, can not
There is wider place to grind cutter in the country sharp, or even many people will not whet a knife again, directly buy new cutter, from
And make many cutters that can not play its due service life.
Moreover existing sharpening tool is very simple, and most of young man will not whet a knife, when whetting a knife, have very
More grindings fall off, and are easy to make dirty within doors, also want cleaning, extremely inconvenient.Even if can whet a knife, when some cutters need longer
Between could grind sharp, the cutter not used for a long time especially is whetted a knife in the way of traditional, and just seem very time-consuming expense
Power, therefore be badly in need of wanting one kind that can quickly whet a knife now, the good knife sharpening device of sharpening effect.
Summary of the invention
In view of the above problems, technical purpose of the invention be to provide a kind of grinding speed is fast, grinding precisely, energy
It is enough so that the sharper and time saving and energy saving automatic knife-grinding apparatus of cutter, and also provide and knife sharpening device enabled to control automatically
System enables to whet a knife quicker, the control system and control method of intelligentized automatic knife-grinding apparatus.
The invention is realized by the following technical scheme：
Automatic knife-grinding apparatus of the invention, including grinding tool body and grinding tool, the specific top of mill are equipped with strip gab, item
The lower part of shape opening is symmetrically arranged with two grinding tools along the center line of opening, and the top of bar shaped is equipped with the folder knife dress for clamping cutter
It sets, grinding tool is rotatably installed in grinding tool body by rotating bar, and rotating bar is connected with driving device；Mill particularly with top strip gab
A side connected vertically is equipped with the knife for placing cutter and stitches, and the two sides of knife seam are equipped with movable plate.
Automatic knife-grinding apparatus of the invention, grinding tool include cylindrical body of the center equipped with through-hole and 1~5 outside cylindrical body
The arc abrasive stick of a protrusion when arc abrasive stick turns to horizontal position, touches or crosses center line at the top of arc abrasive stick, and two
Bar crossings rotation on grinding tool；Mill is particularly equipped with adjustment tank perpendicular to the both ends of the surface of strip gab, and rotating bar passes through grinding tool
Central through hole be horizontally arranged in adjustment tank.Intersecting rotation is synchronization, and the abrasive stick on grinding tool can only have an abrasive stick energy
It enough turns to close to the horizontal position of center line.
Automatic knife-grinding apparatus of the invention, knife-clamping device include the center line two sides for being symmetrically set in bar shaped at the top of grinding tool body
Clamping part, clamping part are mounted on the specific top of mill by guide rails moving type.
Automatic knife-grinding apparatus of the invention, the interior several nozzles being equipped with towards grinding tool body and tool contact of grinding tool body, nozzle
It is horizontally disposed, specific bottom is ground equipped with antiskid, shock-absorbing pad；The intracorporal lower part of grinding tool is equipped with the sewage sump connecting with sewage pipe.
Automatic knife-grinding apparatus of the invention, the flour milling of abrasive stick are equipped with the groove that several tilt angles are 25~50 °, groove
Width is 2mm or more, and the inclined direction of adjacent abrasive stick is opposite；Elastomer block is additionally provided between abrasive stick and grinding tool.
The top of automatic knife-grinding apparatus of the invention, two clamping end surfaces is symmetrically arranged with horizontal clamp bar, the clamping of clamp bar
End is equipped with arc-shaped anti-slip rubber, and the lower part of two clamping end surfaces is symmetrically arranged with horizontal amortisseur bar, and the end of amortisseur bar is set
There is adsorption bar, adsorption bar is equipped with the negative tube being connected to Negative pressure machine.
Automatic knife-grinding apparatus of the invention, grinding tool body is interior to be equipped with limited block along center line A, and limited block passes through lifting device and pacifies
In grinding tool body.
The control system of automatic knife-grinding apparatus of the invention, two clamping parts are driven by servo electric jar, are equipped in clamp bar
Pressure sensor, nozzle are connected with pressure regulating pump by jet pipe, and infrared tool detection devices are equipped in grinding tool body and cutter sizes identify
Device, the bottom of knife-clamping device are equipped with servo telescoping cylinder, and servo telescoping cylinder is fixed in grinding tool body, and rotating bar is equipped with and place
Manage the speed probe and Lap Time counter of device connection；Servo electric jar, the driving device of rotating bar, Negative pressure machine, servo are flexible
Cylinder, cutter sizes identification device, tool detection devices, pressure sensor and pressure regulating pump are connect with processor.
The control method of automatic knife-grinding apparatus of the invention, includes the following steps：
Step 1: opening automatic knife-grinding apparatus, the clamping part that processor controls knife-clamping device is opened, the cutter that needs are ground
It is placed in grinding tool body, after infrared tool detection devices detect cutter, processor controls cutter sizes identification device and identifies knife
The size of tool, then control clamping part and be moved to the best clip position of cutter, the pressure set to cutter clamps, to cutter to set
Fixed pressure clamps, next to tool-holder, and control limited block moves down；
Step 2: position of the adjustment rotating bar in adjustment tank, is controlled grinding tool and is carried out with the rotational speed set to cutter
Polishing, and after grinding tool sets fixing turn to cutter polishing rotation, it controls pressure regulating pump and is pressurizeed with the pressure set to nozzle, to grinding tool
And cutter is cleaned；
Step 3: stopping polishing after being polished to the number of total coils of setting, control knife-clamping device is opened, and takes out cutter, confirmation
Grinding effect repeats if cutter is not sharp enough Step 1: step 2 and step 3, polish again, until cutter polishing enough to
It is sharp.
The beneficial effects of the invention are as follows:
By being equipped with grinding tool in grinding tool body, grinding tool is driven by driving device to be rotated, so that the abrasive stick pair on grinding tool
The blade of cutter is polished, so as to grind sharp by cutter automatically so that the process whetted a knife more quickly, the knife that grinds
Have sharper while also time saving and energy saving；By the arc abrasive stick being equipped in center line two sides, bar crossings are rotated, so as to
Two side grindings of enough quick tool setting tools obtain it is sharp, by adjusting the position of rotating bar, so as to control the polishing to cutter every time
Amount, the limited block that can be easy to control the process of sharpening, and be equipped with can be precisely controlled the polishing position of cutter, even if being ignorant of
People also can easily use；By the control system and control method of automatic knife-grinding apparatus, so that grinding can carry out automatically,
And the turnning circle of sharpening can be set, the size of stock removal is precisely controlled, can accurately control the time of sharpening, so that mill
Knife is more convenient.
Detailed description of the invention
Fig. 1 is the general structure schematic diagram of automatic knife-grinding apparatus.
It is marked in figure：1 be grinding tool body, 2 be grinding tool, 3 be knife-clamping device, 4 be arc abrasive stick, 5 be elastomer block, 6 be groove,
7 it is nozzle, 8 be clamping part, 9 be the knife edge, 10 be clamp bar, 11 be amortisseur bar, 12 be adjustment tank, 13 be limited block, 14 is absorption
Item, A are center line.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing.
The top of automatic knife-grinding apparatus as shown in Figure 1, including grinding tool body 1 and grinding tool 2, the grinding tool body 1 is equipped with bar shaped
Opening, cutter are put into knife sharpening device by strip gab, and the lower part of strip gab is symmetrically arranged with two along the center line A of opening
Grinding tool 2, grinding tool 2 rotates, to polish cutter, the top of bar shaped is equipped with the knife-clamping device 3 for clamping cutter, mill
Tool 2 is rotatably installed in grinding tool body 1 by rotating bar, and rotating bar is connected with driving device, and the driving device of rotating bar is preferably anti-
Hydroelectric machine；9 are stitched equipped with the knife for placing cutter with a top strip gab side connected vertically on grinding tool body 1, knife seam 9
Two sides be equipped with movable plate, have to middle part direction elasticity, movable plate can by the clast of abrasion keep off in grinding tool body 1, keep away
Exempt to spill, keep indoor cleaning, and enables to cutter that can swing in polishing.
Grinding tool 2 includes the cylindrical body and 1~5 raised arc abrasive stick 4 outside cylindrical body that center is equipped with through-hole, convex
The arc abrasive stick 4 risen is preferably 4, and when arc abrasive stick 4 turns to horizontal position, the top of arc abrasive stick 4 touches or crosses
Center line A, center line A is crossed at the top of usual arc abrasive stick 4, so as to quickly polish cutter, on two grinding tools 2
Abrasive stick 4 intersects rotation；It is equipped with adjustment tank 12 perpendicular to the both ends of the surface of strip gab on grinding tool body 1, can be adjusted by adjusting slot 12
Turn over lever moves left and right, and so as to adjust the size of the stock removal to cutter, convenient for controlling the polishing of cutter, rotating bar passes through mill
The central through hole of tool 2 is horizontally arranged in adjustment tank 12.Intersecting rotation is synchronization, and the abrasive stick 4 on grinding tool 2 can only have one
Abrasive stick can be turned to close to the horizontal position of center line A.
Knife-clamping device 3 includes the clamping part 8 for being symmetrically set in the two sides center line A of 1 top bar shaped of grinding tool body, and clamping part 8 is logical
Cross the top that guide rails moving type is mounted on grinding tool body 1.
Several nozzles 7 towards grinding tool body 1 and tool contact are equipped in grinding tool body 1, nozzle 7 is horizontally disposed, grinding tool body 1
Bottom is equipped with antiskid, shock-absorbing pad；Lower part in grinding tool body 1 is equipped with the sewage sump connecting with sewage pipe.
The flour milling of abrasive stick 4 is equipped with the groove 6 that several tilt angles are 25~50 °, and best groove is set as 38 °, the width of groove 6
Degree is 2mm or more, and so as to quickly wash away dirt, the inclined direction of adjacent abrasive stick 4 is on the contrary, so as to equal to cutter
Even polishing also not will form chisel edge, so that cutter is sharper after milled so that the vertical sword formed is smaller substantially；Mill
Elastomer block 5 is additionally provided between item 4 and grinding tool 2, the elastomer block 5 being equipped with can play impact when contacting between cutter and grinding tool 2
Power is smaller, has buffer function, can protect cutter and grinding tool 2.
The top of two clamping parts, 8 end face is symmetrically arranged with horizontal clamp bar 10, and the clamping end of clamp bar 10 is prevented equipped with arc-shaped
Cutter can tightly be clamped, be polished so as to reliable and stable cutter by sliding rubber, anti-slip rubber, two clamping parts, 8 end
The lower part in face is symmetrically arranged with horizontal amortisseur bar 11, and amortisseur bar 11 has the function of damping, and the end of amortisseur bar 11 is equipped with absorption
Item 14, adsorption bar 14 are equipped with the negative tube being connected to Negative pressure machine, can be inhaled amortisseur bar 11 in knife by the adsorption bar 14 being equipped with
Has surface, amortisseur bar 11 makes the enough frictional force that has between cutter and grinding tool, after cutter polishing, in the work of amortisseur bar 11
Under will not horse back return so that grinding tool be avoided to damage the cutting edge of cutter improve the sharpness of cutter.
It is equipped with limited block 13 along center line A in grinding tool body 1, cutter can be put into mill before preparing to whet a knife by limited block 13
In specific 1, enable to cutter placement location accurate, and by clamp bar 10 by tool-holder it is steady after, control limited block 13 under
It moves, cutter is swung back and forth during the grinding process.
The control system of automatic knife-grinding apparatus, two clamping parts 8 are driven by servo electric jar, and pressure is equipped in clamp bar 10 and is passed
Sensor, pressure sensor measure clamping force, enable cutter reliable grip in clamp bar 10, and nozzle 7 is connected with tune by jet pipe
Press pump, grinding tool body 1 is interior to be equipped with infrared tool detection devices and cutter sizes identification device, and the bottom of knife-clamping device 3, which is equipped with, to be watched
Telescoping cylinder is taken, servo telescoping cylinder is fixed in grinding tool body 1, and rotating bar is equipped with speed probe connected to the processor and Lap Time
Counter；Servo electric jar, the driving device of rotating bar, Negative pressure machine, servo telescoping cylinder, cutter sizes identification device, cutter inspection
Device, pressure sensor and pressure regulating pump is surveyed to connect with processor.
The control method of automatic knife-grinding apparatus, includes the following steps：
Step 1: opening automatic knife-grinding apparatus, the clamping part 8 that processor controls knife-clamping device 3 is opened, the knife that needs are ground
Tool is placed in grinding tool body 1, and the cutting edge of cutter is placed on limited block, after infrared tool detection devices detect cutter, processing
Device controls the size of cutter sizes identification device identification cutter, then controls clamping part 8 and be moved to the best clip position of cutter, to knife
Tool is clamped with the pressure set, next to tool-holder, and control limited block moves down；
Step 2: position of the adjustment rotating bar in adjustment tank, is controlled grinding tool 2 and is carried out with the rotational speed of setting to cutter
Polishing, and after grinding tool 2 sets fixing turn to cutter polishing rotation, it controls pressure regulating pump and is pressurizeed with the pressure set to nozzle, opposite grinding
Tool 2 and cutter are cleaned；
Step 3: stopping polishing after being polished to the number of total coils of setting, control knife-clamping device 3 is opened, and takes out cutter, really
Recognize grinding effect, if cutter is not sharp enough, repeats Step 1: step 2 and step 3, polish again, until cutter is polished sufficient
It is enough sharp.
By the control system and control method of automatic knife-grinding apparatus, so that grinding can carry out automatically, and can set
The turnning circle for setting sharpening is precisely controlled the size of stock removal, can accurately control the time of sharpening, so that it is more square to whet a knife
Just.
Claims (7)
1. a kind of automatic knife-grinding apparatus, which is characterized in that including grinding tool body（1）And grinding tool（2）, the grinding tool body（1）Top
Equipped with strip gab, the lower part of strip gab is along the center line being open（A）It is symmetrically arranged with two grinding tools（2）, the top of bar shaped is equipped with
Knife-clamping device for clamping cutter（3）, grinding tool（2）Grinding tool body is rotatably installed in by rotating bar（1）Interior, rotating bar is connected with
Driving device, the driving device of rotating bar are waterproof machine；Grinding tool body（1）A upper and top strip gab side connected vertically
Face is equipped with the knife for placing cutter and stitches（9）, knife seam（9）Two sides be equipped with movable plate；Knife-clamping device（3）Including being symmetrically set in mill
Specifically（1）The center line of top bar shaped（A）The clamping part of two sides（8）, clamping part（8）Grinding tool body is mounted on by guide rails moving type
（1）Top；Two clamping parts（8）It is driven by servo electric jar, clamp bar（10）It is interior to be equipped with pressure sensor, nozzle（7）Pass through
Jet pipe is connected with pressure regulating pump, grinding tool body（1）It is interior to be equipped with infrared tool detection devices and cutter sizes identification device, knife-clamping device（3）
Bottom servo telescoping cylinder is installed, servo telescoping cylinder is fixed on grinding tool body（1）Interior, rotating bar is equipped with connected to the processor
Speed probe and Lap Time counter；Servo electric jar, the driving device of rotating bar, Negative pressure machine, servo telescoping cylinder, cutter sizes
Identification device, tool detection devices, pressure sensor and pressure regulating pump are connect with processor.
2. automatic knife-grinding apparatus according to claim 1, which is characterized in that grinding tool（2）The circle of through-hole is equipped with including center
Cylinder and 1~5 raised arc abrasive stick outside cylindrical body（4）, arc abrasive stick（4）When turning to horizontal position, arc
Abrasive stick（4）Top touch or cross center line（A）, two grinding tools（2）On abrasive stick（4）Intersect rotation；Grinding tool body（1）It is upper to hang down
Directly adjustment tank is equipped in the both ends of the surface of strip gab（12）, rotating bar is across grinding tool（2）Central through hole be horizontally arranged at adjustment
Slot（12）In.
3. automatic knife-grinding apparatus according to claim 1, which is characterized in that grinding tool body（1）It is interior to be equipped with towards grinding tool body（1）
With several nozzles of tool contact（7）, nozzle（7）It is horizontally disposed, grinding tool body（1）Bottom be equipped with antiskid, shock-absorbing pad；Grinding tool body
（1）Interior lower part is equipped with the sewage sump connecting with sewage pipe.
4. automatic knife-grinding apparatus according to claim 2, which is characterized in that abrasive stick（4）Flour milling be equipped with several inclinations angle
The groove that degree is 25~50 °（6）, groove（6）Width be 2mm or more, adjacent abrasive stick（4）Inclined direction it is opposite；Abrasive stick
（4）With grinding tool（2）Between be equipped with elastomer block（5）.
5. automatic knife-grinding apparatus according to claim 1, which is characterized in that two clamping parts（8）The top of end face is symmetrically set
There is horizontal clamp bar（10）, clamp bar（10）Clamping end be equipped with arc-shaped anti-slip rubber, two clamping parts（8）The lower part pair of end face
Claim to be equipped with horizontal amortisseur bar（11）, amortisseur bar（11）End be equipped with adsorption bar（14）, adsorption bar（14）It is equipped with and Negative pressure machine
The negative tube of connection.
6. automatic knife-grinding apparatus according to claim 1, which is characterized in that grinding tool body（1）It is interior to be equipped with limit along center line A
Block（13）, limited block is mounted on grinding tool body by lifting device（1）It is interior.
7. the control method of automatic knife-grinding apparatus described in one of -6 according to claim 1, which is characterized in that including following step
Suddenly：
Step 1: opening automatic knife-grinding apparatus, processor controls knife-clamping device（3）Clamping part（8）It opens, the knife that needs are ground
Tool is placed on grinding tool body（1）Interior, the cutting edge of cutter is placed on limited block, after infrared tool detection devices detect cutter, place
The size of device control cutter sizes identification device identification cutter is managed, then controls clamping part（8）It is moved to the best clip position of cutter,
Cutter is clamped with the pressure set, next to tool-holder, control limited block moves down；
Step 2: position of the adjustment rotating bar in adjustment tank, controls grinding tool（2）Cutter is beaten with the rotational speed of setting
Mill, and in grinding tool（2）After setting fixing turn to cutter polishing rotation, controls pressure regulating pump and pressurizeed with the pressure set to nozzle, opposite grinding
Tool（2）And cutter is cleaned；
Step 3: stopping polishing after being polished to the number of total coils of setting, knife-clamping device is controlled（3）It opens, takes out cutter, confirmation
Grinding effect repeats if cutter is not sharp enough Step 1: step 2 and step 3, polish again, until cutter polishing enough to
It is sharp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837196.9A CN106271914B (en) | 2016-09-21 | 2016-09-21 | A kind of automatic knife-grinding apparatus and its control system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837196.9A CN106271914B (en) | 2016-09-21 | 2016-09-21 | A kind of automatic knife-grinding apparatus and its control system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106271914A CN106271914A (en) | 2017-01-04 |
| CN106271914B true CN106271914B (en) | 2018-11-30 |
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ID=57711399
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610837196.9A Active CN106271914B (en) | 2016-09-21 | 2016-09-21 | A kind of automatic knife-grinding apparatus and its control system and control method |
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| Country | Link |
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| CN (1) | CN106271914B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11806839B2 (en) | 2021-03-09 | 2023-11-07 | Sharkninja Operating Llc | Knife sharpening systems |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110434688B (en) * | 2019-08-19 | 2020-12-22 | 成都零柒叁科技有限公司 | Knife sharpening method |
| CN112676930B (en) * | 2020-12-28 | 2021-12-24 | 浙江安可信五金工具有限公司 | Automatic knife sharpening device for high-performance scissors |
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|---|---|---|---|---|
| JPS58120458A (en) * | 1982-01-14 | 1983-07-18 | Fukumoto Riki Seisakusho:Kk | Grinding method and device of tool |
| CN2552634Y (en) * | 2001-12-04 | 2003-05-28 | 赵小嘉 | Fully automatic knife sharpener |
| EP1980364A1 (en) * | 2007-04-13 | 2008-10-15 | Fazzini Technology di ing. Patrizio Fazzini & C.S.a.s. | Improved knife sharpening device |
| CN102015206A (en) * | 2008-05-02 | 2011-04-13 | T·埃克隆德 | Apparatus and grinding block for the treatment of an edge or a cutting edge |
| CN103707139A (en) * | 2012-09-29 | 2014-04-09 | 江苏博固机电有限公司 | Electric tool sharpener |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11806839B2 (en) | 2021-03-09 | 2023-11-07 | Sharkninja Operating Llc | Knife sharpening systems |
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| Publication number | Publication date |
|---|---|
| CN106271914A (en) | 2017-01-04 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20181026 Address after: 529900 Ma'anshan, Yangjiang, Guangdong. Applicant after: Yangjiang Yangdong Tianyi cutter Co.,Ltd. Address before: 610041 1 tower, 64 Wuhou District high road, Chengdu, Sichuan Applicant before: CHENGDU CHUANGHUI KEDA TECHNOLOGY Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 529900 Ma'anshan, Yangjiang, Guangdong. Patentee after: Guangdong Tianyi Cutting Tool Co.,Ltd. Address before: 529900 Ma'anshan, Yangjiang, Guangdong. Patentee before: Yangjiang Yangdong Tianyi cutter Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |