CN212043835U - Full-automatic kitchen knife grinding device and system - Google Patents
Full-automatic kitchen knife grinding device and system Download PDFInfo
- Publication number
- CN212043835U CN212043835U CN201920835088.7U CN201920835088U CN212043835U CN 212043835 U CN212043835 U CN 212043835U CN 201920835088 U CN201920835088 U CN 201920835088U CN 212043835 U CN212043835 U CN 212043835U
- Authority
- CN
- China
- Prior art keywords
- grinding
- cutter
- kitchen knife
- knife
- automatic kitchen
- 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.)
- Active
Links
Images
Abstract
The utility model provides a full-automatic kitchen knife grinder, it includes: a box body; the operation platform is arranged in the box body; the tool clamping device is arranged on the operating platform and used for clamping a tool to be ground and adjusting the inclination angle of the tool; the cutter detection device is arranged on the operating platform and used for detecting the size of the cutter; the mobile positioning device is arranged on the operating platform; the grinding device is connected with the mobile positioning device; the water spraying device is connected with the mobile positioning device; the control device is arranged in the box body and is connected with the cutter clamping device, the cutter detection device, the mobile positioning device, the grinding device and the water spraying device; and the input and output device is connected with the control device.
Description
Technical Field
The utility model relates to a cutter processing technology field, and in particular to full-automatic kitchen knife grinder and system.
Background
In the present society, foreign food and take-out are choices which are made under the inexperienced conditions. However, with the higher demands on quality of life, people "eat home" are becoming an increasing choice. Returning to the family, the multifunctional kitchen knife is warm, safe and interesting, is a life expected by the masses of people in the current full society, and only needs to be used at home for cooking. Cutters such as kitchen cutters become an essential article for every family, but the cutters are worn or cracked after being used for a long time, so that the cutters become dull, and inconvenience is brought to subsequent use. The existing common repairing method is manual grinding or mechanical grinding of the cutter, but the two methods have respective defects and shortcomings.
Two major factors are most critical for the grinding of the tool: 1. an angle; 2 grinding a knife stone.
First, the sharpening angle is very important for the grinding of the tool. Different angles (namely the angle of the contact surface of the blade and the knife stone) are adopted for regrinding according to the functional type requirements of the cutter. In general, for example: the chopping knife and the meat slicing knife are 15-20 degrees, the regrinding angle of the bone chopping knife is 25-30 degrees, in addition, the grinding knife can not only grind one surface, and the other surface is also ground. Sharpening needs to be performed alternately on two sides.
Manual polishing, no matter use whetstone or whetstone, need artifical manual operation, dynamics and angle are difficult to control, can't guarantee to grind along fixed angle, and the quality of the cutter that not only grinds out is uneven, takes time and takes a lot of work moreover, and is inefficient, is difficult to satisfy ordinary masses' daily life demand.
And the quick sharpeners of fixed blade angle on the market, such as: chinese patent CN201810425434.4 automatic knife sharpener, it adopts the V-type to grind the groove and grinds the cutting edge, can only solve emergent demand of whetting a knife temporarily, if use for a long time, not only can change the frontal and the edge angle of cutter, can cause permanent damage to the cutter moreover, finally can't reach the effect of whetting a knife.
Secondly, if the cutter needs to be ground really, the use of only one specification of the grinding whetstone is far from enough. Two important factors for a sharpening stone are the material and mesh size. The common whetstones are both synthetic and natural. The mesh number refers to how many particles are on the surface of the whetstone per square centimeter, and is usually 200/400 mesh or 600/800 mesh. Wherein the knife stone with low mesh number is used for rough grinding and edging, the knife stone with high mesh number is used for trimming the knife stone, and then the knife stone with high mesh number is used for polishing the high points, so that the knife stone can not be used in a mixed way. For example, if a fine tool is ground with a 200 mesh large grit whetstone, permanent damage to the tool may result.
The mechanical grinding device of the prior art tool, such as: chinese patent cn20141070989.x kitchen knife processing is with single automatic knife sharpening device, only adopts fixed single mill blade disc, can't correspond the whetstone of specification according to the cutter of different types, shape, automatic selection, more can't automatically regulated angle and dynamics of grinding to can't realize effectual grinding, can cause the damage to the cutter even.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve among the prior art cutter grind especially during the kitchen sword grinds, the grinding quality is poor, and is inefficient, can't realize full-automatic technical problem such as grinding.
The embodiment of the utility model provides a full-automatic kitchen knife grinder, it includes: a box body; the operation platform is arranged in the box body; the tool clamping device is arranged on the operating platform; the cutter detection device is arranged on the operating platform and used for detecting the size of the cutter; the mobile positioning device is arranged on the operating platform; the grinding device is connected with the mobile positioning device; the water spraying device is connected with the mobile positioning device; the control device is arranged in the box body and is connected with the cutter clamping device, the cutter detection device, the mobile positioning device, the grinding device and the water spraying device; and the input and output device is arranged in the box body and is connected with the control device.
Further, the tool holding device includes: the fixing frame is connected with the operating platform; the base is connected with the fixed frame through a first driving device, and one end face of the base is provided with a groove for placing a cutter along the direction of the cutter back; a jaw, comprising: is connected with the base through a second driving device.
Further, the grinding device includes: an outer frame; the fixed frame is rotatably arranged in the outer frame and comprises a plurality of side mounting surfaces; a plurality of knife stones which are respectively and fixedly connected on the side mounting surfaces in an elastic way; the rotating device is connected with the fixed frame through the outer frame and used for driving the fixed frame to rotate and position; the reciprocating motion driving device is connected with the outer frame and used for driving the grinding device to reciprocate; and the steering device is connected with the outer frame and is used for driving the grinding device to rotate.
Further, the tool detection device is a contact detection device or a non-contact detection device.
Further, the input/output device is a touch display.
The embodiment of the utility model provides a still provide the application method as above-mentioned arbitrary full-automatic kitchen knife grinder, include following step: the input and output device receives the information of the tool to be ground input by a user and sends the information of the tool to be ground to the control device; the control device controls the cutter clamping device to clamp the cutter to be ground and adjusts the angle of the cutter to be ground according to the information of the cutter to be ground; the cutter detection device detects the size of the cutter to be ground; the movable positioning device drives the grinding device and the water spraying device to a grinding position according to the size of the tool to be ground; and the grinding device adjusts the grinding angle and selects a knife stone to grind the tool to be ground according to the information and the size of the tool to be ground.
The embodiment of the utility model provides a still provide a full-automatic kitchen knife grinding system, include: the full-automatic kitchen knife grinding device is used for grinding a knife to be ground; and the server is connected with the full-automatic kitchen knife grinding device through a network and used for receiving the information of the cutter to be ground, selecting corresponding grinding parameters according to the information of the cutter to be ground and sending the grinding parameters to the full-automatic kitchen knife grinding device.
Further, the control device of the full-automatic kitchen knife grinding device comprises: a central processing unit, a storage unit and a communication unit; the server includes: a data processing unit and a data storage unit.
Further, the data storage unit is used for storing the cutter information and the corresponding grinding parameters.
Further, the full-automatic kitchen knife grinding system further comprises: and a payment settlement unit.
The utility model provides a full-automatic kitchen knife grinder and application method thereof not only can be according to the information such as kind size of waiting to grind the cutter, and the angle is ground in the automatic adjustment, but also can the different specifications of automatic selection whetstone polish and polish, need not the manual work and grind, has really realized full-automatic kitchen knife and has ground the function. Not only improves the grinding accuracy and ensures the grinding quality, but also greatly improves the grinding efficiency, meets the daily life requirements of the common public and provides great convenience for the life of people.
Drawings
The above features, technical features, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, which is to be read in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural view of a full-automatic kitchen knife grinding device according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for using a full-automatic kitchen knife grinder according to another embodiment of the present invention;
fig. 3A is a schematic structural view of a tool holding device of a full-automatic kitchen knife grinding device according to another embodiment of the present invention;
fig. 3B is a schematic exploded view of a tool holding device of a full-automatic kitchen knife grinding device according to another embodiment of the present invention;
fig. 4A is a schematic structural view of a cutter grinding device of a fully automatic kitchen cutter grinding device according to another embodiment of the present invention;
fig. 4B is a schematic exploded view of a cutter grinding device of a full-automatic kitchen cutter grinding device according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fully automatic kitchen knife grinding system according to another embodiment of the present invention.
The reference numbers illustrate:
the full-automatic kitchen knife grinding device 100, the box body 110, the operation platform 120, the knife clamping device 130, the knife detection device 140, the mobile positioning device 150, the grinding device 160, the water spraying device 170, the control device 180, the input and output device 190, the fixed frame 131, the base 132, the first driving device 133, the clamping jaw 134, the second driving device 135, the fixed claw 1341, the movable claw 1342 and the outer frame 161; fixed frame 162, side mounting surface 1621, whetstone 163, rotating device 164, reciprocating driving device 165, steering device 166, server 200, network 300
Detailed Description
In view of prior art, the hand grinding or the mechanical grinding of cutter can't be according to characteristics such as the kind of cutter, set for the angle of grinding, dynamics and whetstone's selection and the regulation of angle, and grinding efficiency is low, and the grinding quality can't be guaranteed, consequently, the utility model relates to a can be according to the kind of cutter, size, adjust the angle that the cutter ground to the whetstone of multiple specification can be selected, the cutter is polished from different angles, thereby really realize full-automatic accurate grinding cutter's function, and fully guaranteed the effect of grinding.
In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort. For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure of the product.
Fig. 1 is a schematic structural view of a full-automatic kitchen knife grinding device according to an embodiment of the present invention.
In the embodiment of the present invention, the full-automatic kitchen knife grinding device 100 includes: a case 110; an operation platform 120 disposed in the case 110; a tool holding device 130, disposed on the operation platform 120, for holding a tool to be ground and adjusting the inclination angle of the tool according to the type of the tool; the cutter detection device 140 is arranged on the operating platform 120 and is used for detecting the size of the cutter, including the length, the width and the thickness of the cutter and the radian of a cutting edge; the movable positioning device 150 is arranged on the operating platform 120, and drives the grinding device 160 to move to a grinding position according to the size of the cutter to grind the cutter; a grinding device 160 connected with the mobile positioning device 150; the water spraying device 170 is connected with the mobile positioning device 150; a control device 180 disposed in the case 110, connected to the tool clamping device 130, the tool detecting device 140, the moving positioning device 150, the polishing device 160, and the water spraying device 170, and controlling these devices to perform corresponding operations; the input/output device 190 is disposed in the box 110 and connected to the control device 180, in this embodiment, the input/output device 190 is a touch display, but the present invention is not limited thereto.
Specifically, referring to fig. 2, the method for grinding the knife by using the fully automatic kitchen knife grinding device 100 includes the following steps: step S110: the input/output device 190 receives the information of the tool to be ground input by the user, and sends the information of the tool to be ground to the control device 180; step S120: the control device 180 controls the tool clamping device 130 to clamp the tool to be ground and adjusts the angle of the tool to be ground according to the information of the tool to be ground; step S130: the cutter detection device detects 140 the size of the cutter to be ground and sends the size of the cutter to be ground to the control device 180; step S140: the control device 180 controls the mobile positioning device 150 to drive the grinding device 160 and the water spraying device 170 to a grinding position according to the size of the tool to be ground; step S150: the control device 180 controls the grinding device 160 to adjust the grinding angle and select a knife stone to grind the tool to be ground according to the information and the size of the tool to be ground. After the grinding is completed, the tool clamping device 130 automatically returns to the right to loosen the tool, so that the user can take the tool away, and the whole tool grinding process is automatically completed.
The full-automatic kitchen knife grinding device provided by the embodiment can automatically adjust the grinding angle according to the information such as the type and the size of the to-be-ground knife, and can automatically select knife grindstones of different specifications to grind and polish without manual grinding, so that the full-automatic kitchen knife grinding function is truly realized.
Referring to fig. 3A and 3B, in another embodiment of the present invention, the tool holding device 130 includes: a fixing frame 131 connected to the operation platform 120; a base 132 connected to the fixing frame 131 through a first driving device 133, and having a groove on one end surface thereof for placing a tool along a direction of a tool back; and a clamping jaw 134 connected with the base 132 through a second driving device 135. When a tool to be ground is placed on the base 132 along the direction of the back of the blade, the second driving device 135, which may be a motor in this embodiment, drives the fixed jaw 1341 and the movable jaw 1342 of the clamping jaw 134 to close to clamp the tool. At this time, the control device 180 controls the first driving device 133 to operate according to information such as the type of the tool, and drives the base 132 to rotate on the fixing frame 131, so that the tool forms a certain angle with the vertical plane for subsequent grinding. The embodiment of the utility model provides an in, according to the rotatory corresponding angle of different sword types, if: the Chinese style slicing knife is 15 degrees on the left and right, the Chinese style boning knife is 20 degrees on the left and right, the Sande knife is 13 degrees on the left and right, and the like, so that the most appropriate grinding angle is achieved, and the subsequent grinding quality is ensured.
Referring to fig. 4A and 4B, in another embodiment of the present invention, the polishing apparatus 160 includes: an outer frame 161; the fixing frame 162 is rotatably disposed in the outer frame 161 and includes a plurality of side mounting surfaces 1621; the plurality of blades 163 are respectively and fixedly connected to the side mounting surfaces 1621, and in this embodiment, the plurality of blades 163 may include 200 meshes, 600 meshes, 1000 meshes, etc., but the present invention is not limited thereto. And the rotating device 164 is connected with the fixed frame 162 through the outer frame 161 and is used for driving the fixed frame 162 to rotate and position, and when the whetstone is required to be selected, the rotating device (which may be a motor in the embodiment) rotates and drives the fixed frame to rotate, so that the whetstone on the side mounting surface is driven to rotate, and the determined whetstone is selected to be ground in the next step. For example, when a kitchen knife is ground, a rough grinding stone is used to grind one-side edge, and after one-side grinding is completed, the edge face is automatically turned over to grind the other side. The two sides are in a group, after the coarse grinding knife stone is ground into a group, the fine grinding knife stone is automatically replaced, and the previous group of actions are repeated. Until the polishing of the blade face is finished.
And the reciprocating motion driving device 165 is connected with the outer frame 161 and is used for driving the grinding device 160 to reciprocate so as to perform a knife sharpening action. In this embodiment, the reciprocating drive means may be a linear reciprocating mechanism.
A turning device 166 connected to the outer frame 161 for driving the grinding device 160 to rotate, thereby driving the whetstone to rotate at a certain angle with respect to the cutting tool, such as: 14-45 degrees, so that the knife can be precisely polished, and particularly under the condition that the knife edge has a radian, the knife sharpening stone can rotate along with the radian of the knife edge, thereby ensuring good grinding effect.
In the embodiment of the present invention, the plurality of whetstones 163 are respectively elastically and fixedly attached to the plurality of side mounting surfaces. The whetstone may be elastically connected to the side mounting surface 1611 by a spring, or may be elastically connected to the side mounting surface by an electromagnetic device. When grinding is carried out, the contact pressure of the knife stone and the cutter can be controlled by adjusting the elastic force of the spring or the electromagnetic force, so that accurate grinding and polishing are realized.
In the embodiment of the present invention, the tool detection device 140 may be a contact detection device, for example: and the positioning rod can measure the size of the cutter when the positioning rod touches the edge of the cutter when the mobile positioning device moves and drives the positioning rod to move. In the embodiment of the present invention, the tool detection device may also be a non-contact detection device, for example: the light induction scanning equipment or the image detection system can measure the size of the cutter when the cutter clamping device clamps the cutter.
Referring to fig. 5, another embodiment of the present invention provides a full-automatic kitchen knife grinding system, which includes: the control device 180 of the fully automatic kitchen knife grinder 100 as described in the above embodiment includes: a central processing unit, a storage unit and a communication unit; the server 200 is connected to the full-automatic kitchen knife grinding device 100 through a network 300, and includes: and the data processing unit and the data storage unit are used for storing the information of the cutter and the corresponding grinding parameters. In an embodiment of the present invention, the network is a wireless network or a wired network.
When a user needs to grind a kitchen knife, an input/output device of the full-automatic kitchen knife grinding device receives the type information of the knife input by the user, the type information of the knife is sent to a control device, the type information of the knife is transmitted to the server through a network, the server receives the type information of the knife, the type information of the knife is compared with the type information of the knife stored in a data storage unit, grinding parameters corresponding to the type information of the knife are called, the grinding parameters are sent back to the full-automatic kitchen knife grinding device through the network, and the control device of the full-automatic kitchen knife grinding device controls other devices to grind according to the grinding parameters.
Furthermore, in the embodiment of the present invention, the data storage unit of the server further includes user information data, status data of the full-automatic kitchen knife grinding device, and the like. For example: when the knife stone needs to be replaced, the server sends a replacement prompt to the full-automatic kitchen knife grinding device to prompt maintenance personnel to replace the knife stone so as to maintain the normal operation of the full-automatic kitchen knife grinding system.
In another embodiment of the present invention, the fully automatic kitchen knife grinding system further comprises: and a payment settlement unit. When a user needs to grind the kitchen knife, the user needs to pay corresponding price according to a specific knife type through the payment and settlement unit, so that the full-automatic kitchen knife grinding system is started to grind the knife. The maintenance cost of the full-automatic kitchen knife grinding system can be guaranteed through the payment settlement unit.
To sum up, the embodiment of the utility model provides a full-automatic kitchen sword grinder, system and application method thereof not only can be according to the information such as kind size of waiting to grind the cutter, and the angle is ground in the automatic adjustment, but also can the automatic selection different specifications's whetstone polish and polish, need not the manual work and grind, have really realized full-automatic kitchen sword and have ground the function. Not only improves the grinding accuracy and ensures the grinding quality, but also greatly improves the grinding efficiency, meets the daily life requirements of the common public and provides great convenience for the life of people.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a full-automatic kitchen knife grinder which characterized in that includes:
a box body;
the operation platform is arranged in the box body;
the tool clamping device is arranged on the operating platform and used for clamping a tool to be ground and adjusting the inclination angle of the tool;
the cutter detection device is arranged on the operating platform and used for detecting the size of the cutter;
the mobile positioning device is arranged on the operating platform;
the grinding device is connected with the mobile positioning device;
the water spraying device is connected with the mobile positioning device;
the control device is arranged in the box body and is connected with the cutter clamping device, the cutter detection device, the mobile positioning device, the grinding device and the water spraying device;
and the input and output device is connected with the control device.
2. The fully automatic kitchen knife grinder assembly of claim 1 wherein said knife holder assembly includes:
the fixing frame is connected with the operating platform;
the base is connected with the fixed frame through a first driving device, and one end face of the base is provided with a groove for placing a cutter along the direction of the cutter back;
a jaw, comprising: and the fixed claw and the movable claw are connected with the base through a second driving device.
3. The fully automatic kitchen knife grinder of claim 1, wherein the grinder includes:
an outer frame;
the fixed frame is rotatably arranged in the outer frame and comprises a plurality of side mounting surfaces;
a plurality of knife stones which are respectively and fixedly connected on the side mounting surfaces in an elastic way;
the rotating device is connected with the fixed frame through the outer frame and used for driving the fixed frame to rotate and position;
the reciprocating motion driving device is connected with the outer frame and used for driving the grinding device to reciprocate;
and the steering device is connected with the outer frame and is used for driving the grinding device to rotate.
4. The fully automatic kitchen knife grinder of claim 1, wherein the knife detector is a contact detector or a non-contact detector.
5. The fully automatic kitchen knife grinder of claim 1, wherein the input/output device is a touch display.
6. A full-automatic kitchen knife grinding system, comprising:
the full-automatic kitchen knife grinding device as claimed in any one of claims 1 to 5, used for grinding a knife to be ground;
and the server is connected with the full-automatic kitchen knife grinding device through a network and used for receiving the information of the cutter to be ground, selecting corresponding grinding parameters according to the information of the cutter to be ground and sending the grinding parameters to the full-automatic kitchen knife grinding device.
7. The fully automatic kitchen knife grinder system of claim 6, wherein the control means of the fully automatic kitchen knife grinder system includes: a central processing unit, a storage unit and a communication unit; the server includes: a data processing unit and a data storage unit.
8. The fully automated kitchen knife grinding system of claim 7, wherein the data storage unit is configured to store tool information and corresponding grinding parameters.
9. The fully automated kitchen knife grinding system of claim 6, further comprising:
and a payment settlement unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920835088.7U CN212043835U (en) | 2019-06-04 | 2019-06-04 | Full-automatic kitchen knife grinding device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920835088.7U CN212043835U (en) | 2019-06-04 | 2019-06-04 | Full-automatic kitchen knife grinding device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212043835U true CN212043835U (en) | 2020-12-01 |
Family
ID=73507847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920835088.7U Active CN212043835U (en) | 2019-06-04 | 2019-06-04 | Full-automatic kitchen knife grinding device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212043835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497263A (en) * | 2019-06-04 | 2019-11-26 | 上海普乔贸易发展有限公司 | Full-automatic kitchen knife grinding device, system and its application method |
-
2019
- 2019-06-04 CN CN201920835088.7U patent/CN212043835U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497263A (en) * | 2019-06-04 | 2019-11-26 | 上海普乔贸易发展有限公司 | Full-automatic kitchen knife grinding device, system and its application method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7413504B2 (en) | Blade sharpening device with blade contour copying device | |
| JP5629773B2 (en) | A new sharpener for creating cross-grinded edges | |
| JPH0741527B2 (en) | Tool polishing method and device | |
| CN212043835U (en) | Full-automatic kitchen knife grinding device and system | |
| CN110497263A (en) | Full-automatic kitchen knife grinding device, system and its application method | |
| US20190366500A1 (en) | Knife sharpener | |
| CN213498101U (en) | Knife sharpening device | |
| CN210703918U (en) | Automatic knife sharpening device | |
| CN2920534Y (en) | Hand held regulatable knife sharpener | |
| CN2882897Y (en) | Electric knife grinder | |
| KR102119520B1 (en) | Blade polishing apparatus | |
| CN205309940U (en) | Domestic electronic sharpedge grinding machine | |
| CN217513505U (en) | Fixed angle knife sharpener | |
| CN2109281U (en) | Miniature multi-purpose tool grinding, finishing machine | |
| CN215659317U (en) | Full-automatic knife sharpening equipment | |
| CN220740774U (en) | Knife sharpener | |
| CN220445926U (en) | Fixed angle knife sharpening device | |
| CN210649921U (en) | Saw blade grinding device | |
| CN217914838U (en) | Knife sharpening equipment for kitchen | |
| CN201659463U (en) | Knife sharpener | |
| CN213765476U (en) | Quick knife sharpening device | |
| CN208681368U (en) | Plug-type diamond stick fast knife sharpener | |
| CN2256791Y (en) | Electric knife sharper for kitchen | |
| CN217728103U (en) | Semi-automatic grinding device for repairing hobbing cutter | |
| CN210256914U (en) | Sponge trimmer with sharpening function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |