CN116872642A - Ceramic pencil sharpener capable of greatly improving pencil sharpening times - Google Patents
Ceramic pencil sharpener capable of greatly improving pencil sharpening times Download PDFInfo
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- CN116872642A CN116872642A CN202310743622.2A CN202310743622A CN116872642A CN 116872642 A CN116872642 A CN 116872642A CN 202310743622 A CN202310743622 A CN 202310743622A CN 116872642 A CN116872642 A CN 116872642A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 43
- 238000005520 cutting process Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 23
- 238000005245 sintering Methods 0.000 claims description 12
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 238000000462 isostatic pressing Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- -1 however Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L23/00—Sharpeners for pencils or leads
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/584—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/597—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon oxynitride, e.g. SIALONS
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention relates to a ceramic pencil sharpener capable of greatly improving pencil sharpening times, which comprises a knife holder and a blade, wherein the blade is arranged on the knife holder, one side of the blade is provided with a cutting edge, a pencil groove is arranged between the cutting edge and the knife holder and is used for placing pencils, the blade is a ceramic blade, and the included angle between the cutting edge surface of the ceramic blade and the horizontal plane is 30.5-34 degrees. The pencil sharpener of the invention adopts the ceramic blade, has high hardness, does not rust, is durable, is not easy to passivate, and can improve the pencil sharpening times by more than 20 times.
Description
Technical Field
The invention relates to the technical field of stationery, in particular to a ceramic pencil sharpener capable of greatly improving pencil sharpening times.
Background
The pencil sharpener, also called pencil sharpener, is a stationery for learning and working stock as a pencil sharpening tool.
The pencil sharpener can have various shapes, such as a traditional simple shape, a cartoon shape, a fruit shape, a turning shape and the like, and the structure mainly comprises a knife rest and a knife blade no matter what shape is adopted; from the material point of view, the tool holder has plastic, wood and metal waiting, while most of the blades are made of metal, and ceramic is relatively less.
There are at least two problems with conventional metal blades: 1. is easy to rust; 2. the pen is easy to passivate, so that the blade is not sharp enough, the pen point is easy to break, and the effective pencil sharpening times are small.
With the rise of ceramic tools, some manufacturers have conceived the replacement of metal inserts with ceramics, however, ceramic inserts on the market have two problems: 1. the existing ceramic material has poor toughness and is easy to collapse and lack; 2. the blade edge angle is small, and the atress is easy to be broken to the product quality is poor, effective pencil number of times scheduling problem that cuts appears.
Disclosure of Invention
In order to solve the technical problems, the invention provides the ceramic pencil sharpener which adopts the novel special ceramic blade and can greatly improve pencil sharpening times and is not easy to collapse, crack and crack, and the preparation process of the ceramic blade.
The specific scheme is as follows:
the invention aims to provide a ceramic pencil sharpener capable of greatly improving pencil sharpening times, which comprises a cutter holder and a blade, wherein the blade is arranged on the cutter holder, one side of the blade is provided with a cutting edge, a pencil groove is formed between the cutting edge and the cutter holder and is used for placing pencils, the blade is a ceramic blade, and the included angle between the cutting edge surface of the ceramic blade and the horizontal plane is 30.5-34 degrees.
Furthermore, the blade is made of special modified materials, wherein the special modified materials are one or more of zirconia, alumina, ZTA, ATZ, silicon nitride and SIALON, or are used after special modification by adopting other common ceramic materials in the field.
Another object of the present invention is to provide a process for manufacturing the blade of the ceramic pencil sharpener capable of greatly increasing pencil sharpening times, the process comprising the steps of:
(1) Raw material treatment and sintering: taking the raw material of the blade, and sintering for 72 hours at a sintering temperature of 1550 DEG, a forming pressure of 15MPA and a sintering curve of 0-1550 DEG to obtain a treated material: specific surface area 6m 2 /g，Moisture 1.54% by weight, bulk density 1.23g/cm 3 ；
(2) Carrying out dry pressing and isostatic pressing treatment on the material obtained in the step (1) to obtain a formed blade material: the material density of the sintered blade is more than or equal to 6.05g/cm 3 ；
The isostatic pressing treatment is a key step for obtaining the special modified material and manufacturing the special blade, and the inventor obtains a conclusion through repeated pencil sharpening tests of not less than 30 ten thousand times: the density (specific gravity) of the sintered ceramic is controlled to be 6.05g/cm 3 The above can only have good fracture toughness and bending strength, and the density of the common blade without isostatic pressing treatment is not more than 6.0g/cm 3 The requirements of the present invention cannot be fulfilled. The isostatic pressing forming blank has uniform and equal pressure in all directions, and the pressure is high, so that the fracture toughness and the bending strength of the product can be effectively improved.
(3) And (3) setting the included angle between the cutting edge surface of the formed blade material obtained in the step (2) and the horizontal plane to be 30.5-34 degrees, and carrying out sharpening processing to obtain a finished product blade.
The beneficial effects are that:
1. the traditional metal blade is easy to passivate, and the pencil sharpening times are only 300 times, namely 6 pencils (the national standard QB/T1337-2010 shows that 6 pencils can be sharpened to be qualified).
The pencil sharpener of the invention adopts the ceramic blade made of special modified materials, has high hardness, is not rusted and durable, is not easy to passivate, and can increase the pencil sharpening times by more than 20 times.
2. The common ceramic blade on the market is characterized by high hardness, has the defects of poor toughness and easy breakage, and particularly has the advantages of easy breakage when the side surface of the blade is stressed, and easy brittle fracture when the ceramic blade is stressed in the use process.
The invention improves various formulas, forming process and processing process of ceramics to obtain the preparation process scheme of the ceramic blade which is most suitable for the invention, and the specific gravity of the ceramic after being formed is controlled to be 6.05g/cm 3 Therefore, the product of the invention has very strong fracture toughness and bending strength, and the pencil sharpening times are greatly improved.
In addition, the included angle between the cutting edge surface of the ceramic blade and the horizontal plane is set to be 30.5-34 degrees for sharpening, so that the stress angle of the traditional blade is changed, the problem of brittle fracture of the ceramic blade is avoided, the pencil sharpening times of the product can be greatly improved, and the service life is prolonged.
Drawings
Fig. 1 shows the cutting edge angle of the ceramic blade of the present invention.
Detailed Description
For further illustration of the various embodiments, the invention is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present invention. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.
The invention will now be further described with reference to the drawings and detailed description.
Example 1:
referring to the attached drawings, the ceramic pencil sharpener capable of greatly improving pencil sharpening times comprises a cutter holder and a blade, wherein the blade is arranged on the cutter holder, one side of the blade is provided with a cutting edge, a pencil groove is formed between the cutting edge and the cutter holder and used for placing pencils, the blade is a ceramic blade, and the included angle between the cutting edge surface of the ceramic blade and the horizontal plane is 30.5 degrees.
As a preferred scheme of the invention, the blade is made of special modified materials, wherein the special modified materials are one or more of zirconia, alumina, ZTA, ATZ, silicon nitride and SIALON, or are used after special modification by adopting other common ceramic materials in the field. .
As another preferable scheme of the invention, the preparation process of the blade comprises the following steps:
(1) Raw material treatment and sintering: taking the raw material of the blade, sintering for 72 hours at the sintering temperature of 1550 DEG, the forming pressure of 15MPA and the sintering curve of 0-1550 DEGWhen the treated material was obtained: specific surface area 6m 2 Per g, moisture 1.54wt%, bulk density 1.23g/cm 3 ；
(2) Carrying out dry pressing and isostatic pressing treatment on the material obtained in the step (1) to obtain a formed blade material: density of 6.05g/cm or more 3 ；
(3) And (3) setting the included angle between the cutting edge surface of the formed blade material obtained in the step (2) and the horizontal plane to be 30.5 degrees, and carrying out sharpening processing to obtain a finished product blade.
Example 2:
the solution of this embodiment 2 is basically the same as that of embodiment 1, except that the angle between the cutting edge surface of the ceramic blade and the horizontal plane is 32 °.
Example 3:
the solution of this embodiment 2 is basically the same as that of embodiment 1, except that the angle between the cutting edge surface of the ceramic blade and the horizontal plane is 34 °.
Comparative example 1:
pencil sharpener using metal blade is commercially available.
Comparative example 2:
the solution of this comparative example 2 is basically the same as that of example 1, except that the angle of the cutting edge surface of the ceramic blade is smaller than 30.5 ° from the horizontal.
Comparative example 3:
the scheme of this comparative example 3 is basically the same as that of example 1 except that the angle of the cutting edge surface of the ceramic blade to the horizontal is greater than 34 °.
And (3) detecting a finished product:
the product quality of examples 1-3 and comparative examples 1-3 was tested using the national standard QB/T1337-2010 pencil sharpener, with the test results shown in the following table:
table-comparative examples of the turning ability of the products
From the test results of Table one above, it is clear that:
1. the pencil sharpener with the ceramic blade can improve pencil sharpening times by more than 20 times compared with pencil sharpener with a commercial metal blade.
2. The ceramic blade has good rolling and cutting capability when the included angle between the cutting edge surface of the ceramic blade and the horizontal plane is 30.5-34 degrees, and the best rolling and cutting capability can be obtained when the included angle is 32 degrees; when the included angle is smaller than 30.5 degrees or larger than 34 degrees, the rolling capability of the product is relatively reduced.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. The utility model provides a ceramic pencil sharpener that can improve pencil number of times by a wide margin, includes blade holder, blade, the blade is installed on the blade holder, just one side of blade is equipped with the blade, the blade with be equipped with the pen groove between the blade holder for place the pencil, its characterized in that, the blade is ceramic blade, just the contained angle of ceramic blade's blade face and horizontal plane is 30.5-34.
2. The ceramic pencil sharpener of claim 1, wherein the blade is made of a specially-made modified material, and the specially-made modified material is one or more of zirconia, alumina, ZTA, ATZ, silicon nitride and SIALON.
3. The ceramic pencil sharpener capable of greatly increasing pencil sharpening times according to claim 1 or 2, wherein the process for preparing the blade comprises the following steps:
(1) Raw material treatment and sintering: taking the raw material of the blade, and sintering for 72 hours at a sintering temperature of 1550 DEG, a forming pressure of 15MPA and a sintering curve of 0-1550 DEG to obtain a treated material: specific surface area 6m 2 Per g, moisture 1.54wt%, bulk density 1.23g/cm 3 ；
(2) Carrying out dry pressing and isostatic pressing on the treated material obtained in the step (1) to obtain a formed blade material: the material density of the sintered blade is more than or equal to 6.05g/cm 3 ；
(3) And (3) setting the included angle between the cutting edge surface of the formed blade material obtained in the step (2) and the horizontal plane to be 30.5-34 degrees, and carrying out sharpening processing to obtain a finished product blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310743622.2A CN116872642A (en) | 2023-06-22 | 2023-06-22 | Ceramic pencil sharpener capable of greatly improving pencil sharpening times |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310743622.2A CN116872642A (en) | 2023-06-22 | 2023-06-22 | Ceramic pencil sharpener capable of greatly improving pencil sharpening times |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116872642A true CN116872642A (en) | 2023-10-13 |
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ID=88261296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310743622.2A Pending CN116872642A (en) | 2023-06-22 | 2023-06-22 | Ceramic pencil sharpener capable of greatly improving pencil sharpening times |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116872642A (en) |
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2023
- 2023-06-22 CN CN202310743622.2A patent/CN116872642A/en active Pending
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