WO2018088973A1 - A pencil production method - Google Patents
A pencil production method Download PDFInfo
- Publication number
- WO2018088973A1 WO2018088973A1 PCT/TR2016/000161 TR2016000161W WO2018088973A1 WO 2018088973 A1 WO2018088973 A1 WO 2018088973A1 TR 2016000161 W TR2016000161 W TR 2016000161W WO 2018088973 A1 WO2018088973 A1 WO 2018088973A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- slat
- guide lines
- pencil
- graphite
- grooves
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K19/00—Non-propelling pencils; Styles; Crayons; Chalks
- B43K19/16—Making non-propelling pencils
Definitions
- the present invention relates to a pencil production method, wherein the said production method is characterized in that at least two furrows are made in step of furrowing.
- the invention also relates to use of a slat having at least one guide line in pencil production.
- the raw pencil production is representatively shown in Figure 1.
- slats in standard sizes are cut in certain dimension before the raw pencil production, and the grooves are made via blades within these slats cut in appropriate dimension (Figure 1-A).
- the inside of the grooves is glued slightly in order to fix the graphites to be placed, and the graphites are placed into these grooves ( Figure 1-B).
- a second grooved slat is covered and glued on top of this slat in which the graphites are placed ( Figure 1 -C).
- the sandwich shaped slats glued to each other are cut between the grooves such that they will become single pencils, and then an eraser can be added to their ends if it is desired ( Figure 1 -D).
- processing the slat with machining is the first step in raw pencil production process.
- a line is formed on the surface of the slat used in raw pencil production on which the graphite grooves are not formed ( Figure 3-(A)).
- This line which serves as guide line enables the slat to move along a line during the slat going under the blade and for the time it is under the blade.
- This line enables the slat to move on a line by entering into a male groove present on a lower plate on which the slat moves.
- the grooves will be formed parallel to each other to the length of the slat by the blade hitting on the slat, and the slat will be prevented from sliding with the impact of the blade.
- steps of grooving and furrowing on the slat can be performed simultaneously in single time by means being able to operate the lower and the upper blades at the same time.
- the inventors observed in their studies that even single guide line was not sufficient for keeping the slat straight during preparing a multi-grooved, for example 9 grooves, slat, the slat slid aside slightly with the first blade impact, and as a result the last groove could not be formed on a straight line.
- the graphite placed inside the groove is not precisely centered, and it causes the pencil obtained from that groove to form a side waste.
- the objective of the present invention is to develop a raw pencil production method which prevents side waste formation.
- Figure 1 is the representative view of the steps (A, B, C, D) of a raw pencil production.
- Figure 2 is the representative view of the states wherein the graphite cannot be centered precisely in a pencil (Bad 1 , 2) and wherein it is centered (Good).
- Figure 3 is the representative view of a slat (A) used in the state of the art, and a slat (B) used in the method of the present invention.
- Figure 4 is a perspective view of a plate according to a preferred configuration of the invention.
- Figure 5 is a representative view of a plate according to a preferred configuration of the invention.
- the present invention is a pencil production method comprising the steps of
- the number of guide lines (3) made in furrowing step is two.
- An embodiment of the invention is shown in Figure 3 ( Figure 3-(B)).
- the furrow which is made should have a certain depth so that the slat does not lose its linearity on the lower plate on which it moves during making groove with a blade.
- another characteristic of the said method is that the depth of the guide lines (3) made in furrowing step is between 1 and 2 mm, preferably 1.5 and 1.8 mm. In a specifically preferred embodiment of the invention, the depth of the guide lines (3) is 1.6 mm.
- the distance between the guide lines (3) made in furrowing step is between 20 to 25 mm. In a particularly preferred embodiment of the invention, the said distance is between 22 and 24 cm.
- the number of grooves made on the slat in order to produce pencil can be between 7 and 15.
- the formation of side waste which is aimed to be solved with the method of the present invention is generally seen in slats with 9 grooves. For this reason, in a preferred configuration of the invention, the number of graphite grooves made in the slat used in pencil production is preferably 9.
- a plate (4) is used which is suitable for the sizes of the slat used for making the said furrows and allows the blades enabling the double furrow to be made on the slat to form cutting the slat with suitable intervals.
- the said plate (4) is specifically designed according to the dimensions of the slat to be cut and the guide lines (3) to be formed on the slat, and it comprises a double furrow similar to the one on the slat enabling to pass between the blades according to the double furrows to be made.
- the invention relates to a plate (4) used in the pencil production method of the present invention.
- a perspective view of a plate (4) according to preferred embodiment of the invention is shown in Figure 4.
- a plate (4) used in the pencil production method of the present invention is characterized in that it has at least two guide lines (3).
- the distance between the guide lines (3) is between 20 and 25 mm. In a particularly preferred configuration of the invention, the said distance is between 22 and 24 mm.
- the representative view of the plate (5) of the present invention is shown in Figure 5.
- the length x width x thickness measurements of the used slat can be between 183 to 185 mm x 70 to 72 mm x 4.9 to 5.5 mm.
- the shape of the grooves made on the surface of the slat on which the groove is made (1) can be in a form selected from round, rectangle, pentagon, and triangle.
- the steps of making the guide lines (3) and making the grooves can be performed together.
- the present invention relates to a use of a slat having at least two guide lines (3) in a pencil production method.
- the depth of the guide lines (3) on the surface of the slat on which the guide line is made (2) varies between 1 to 2 mm, preferably 1.5 to 1.8 mm.
- the depth of the guide lines (3) on the surface of the slat (2) is 1.6 mm.
- the distance between at least two guide lines (3) of the slat having at least two guide lines (3) varies between 20 and 25 mm. In a particularly preferred embodiment of the invention, the said distance is between 22 and 24 mm.
- the number of the graphite grooves made on the surface of the slat on which the groove is made (1) can be between 7 and 10. In the slat of the present invention, the number of the graphite grooves made on the surface of the slat on which the groove is made (1) is preferably 9.
- the length x width x thickness measurements of the slat can be between 183 to 185 mm x 70 to 72 mm x 4.9 to 5.5 mm.
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The present invention relates to a pencil production method. The said pencil production method is characterized in that at least two furrows are made in furrowing step. Moreover, the invention also relates to a use of the slat used in raw pencil production, wherein the said slat has at least two guide lines (3). According to another aspect, the invention relates to a plate (4) used in the pencil production method of the present invention.
Description
DESCRIPTION A PENCIL PRODUCTION METHOD Technical Field of the Invention
The present invention relates to a pencil production method, wherein the said production method is characterized in that at least two furrows are made in step of furrowing. According to another aspect, the invention also relates to use of a slat having at least one guide line in pencil production.
Background of the Invention
A pencil production method known in the state of the art comprises the following steps:
1. Processing the slat with machining (furrowing)
2. Gluing the graphite grooves of the machined slat,
3. Placing the graphite into the graphite slots,
4. Drying in a press as double slats,
5. Sizing the double slat,
6. Making a raw pencil with machining.
The raw pencil production is representatively shown in Figure 1. According to this, slats in standard sizes are cut in certain dimension before the raw pencil production, and the grooves are made via blades within these slats cut in appropriate dimension (Figure 1-A). The inside of the grooves is glued slightly in order to fix the graphites to be placed, and the graphites are placed into these grooves (Figure 1-B). A second grooved slat is covered and glued on top of this slat in which the graphites are placed (Figure 1 -C). The sandwich shaped slats glued to each other are cut between the grooves such that they will become single pencils, and then an eraser can be added to their ends if it is desired (Figure 1 -D).
It is quite important the graphite is in the middle of the pencil in raw pencil production. Otherwise, the graphite which is not placed right in the middle of the pencil will cause the tip of the pencil that is the graphite; to slip aside with each sharpening upon the pencil is sharpened during use. The cases in which the graphite is not precisely centered in the groove
(Figure 2, bad 1 and bad 2) and in which the graphite is precisely centered (figure 2, good) are shown in Figure 2. In case wherein the graphite is not centered completely within the groove, the tip of the pencil will be slid to the edge of the pencil at the end upon sharpening the pencil, and a tip from a slat forming the slot of the pencil will be formed instead of graphite at the writing tip where the graphite should be. In this case, the remaining pencil will become unusable. Furthermore, such pencils wherein the graphite is not centered are more prone to breaking since the graphite cannot be fully protected. This decreases the lifetime of the pencil, and it causes the graphite to break before the graphite therein is completely used. Forming a graphite slot which is not centered during production is described as "side waste" formation, and it is concluded with obtaining an unusable product. For this reason, one of the problems experienced in pencil production known in the state of the art and decreasing the efficiency of the production is not being able to place the graphite right in the middle of the pencil. In the studies conducted by the inventors, it was detected that this problem is caused by the slat sliding towards one side slightly during formation of groove for graphite inside the slat, during making the said grooves. They identified the reason for this as the slat losing its linearity from its rear part in first impact of the blade on single furrowed slat.
Actually, in the method applied in the state of the art, processing the slat with machining is the first step in raw pencil production process. By means of this method, a line is formed on the surface of the slat used in raw pencil production on which the graphite grooves are not formed (Figure 3-(A)). This line which serves as guide line enables the slat to move along a line during the slat going under the blade and for the time it is under the blade. This line enables the slat to move on a line by entering into a male groove present on a lower plate on which the slat moves. In this way, the grooves will be formed parallel to each other to the length of the slat by the blade hitting on the slat, and the slat will be prevented from sliding with the impact of the blade. In more modern blade machines, steps of grooving and furrowing on the slat can be performed simultaneously in single time by means being able to operate the lower and the upper blades at the same time.
On the other hand, the inventors observed in their studies that even single guide line was not sufficient for keeping the slat straight during preparing a multi-grooved, for example 9 grooves, slat, the slat slid aside slightly with the first blade impact, and as a result the last groove could not be formed on a straight line. As result of this, the graphite placed inside the groove is not precisely centered, and it causes the pencil obtained from that groove to form a side waste.
For this reason, the objective of the present invention is to develop a raw pencil production method which prevents side waste formation.
Description of the Drawings
Figure 1 is the representative view of the steps (A, B, C, D) of a raw pencil production. Figure 2 is the representative view of the states wherein the graphite cannot be centered precisely in a pencil (Bad 1 , 2) and wherein it is centered (Good).
Figure 3 is the representative view of a slat (A) used in the state of the art, and a slat (B) used in the method of the present invention.
Figure 4 is a perspective view of a plate according to a preferred configuration of the invention.
Figure 5 is a representative view of a plate according to a preferred configuration of the invention.
References
1 : The surface of the slat on which the groove is made 2: The surface of the slat on which the guide line is made 3: Guide lines 4: Plate
Detailed Description of the Invention
As a result of the studies they conducted, the inventors determined that forming a second guide line on the surface of the slat used in pencil production prevents the slat to lose its linearity after the slat is first knifed. According to this, the present invention is a pencil production method comprising the steps of
• making guide lines (3) on the surface of the slat on which the guide line is made (2) in step of furrowing, making grooves by using a plate (4) on the surface of the machined slat on which the groove is made (1),
• gluing the graphite grooves, and placing the graphites into their slot,
• covering a second slat with graphite grooves thereon and drying in a press as double slat,
• sizing the double slat, · making a raw pencil with machining; wherein the said pencil production method is characterized in that at least two guide lines (3) are made in furrowing step.
In a preferred embodiment of the invention, the number of guide lines (3) made in furrowing step is two. An embodiment of the invention is shown in Figure 3 (Figure 3-(B)). In this method of the present invention, the furrow which is made should have a certain depth so that the slat does not lose its linearity on the lower plate on which it moves during making groove with a blade. According to this aspect, in an embodiment of the invention, another characteristic of the said method is that the depth of the guide lines (3) made in furrowing step is between 1 and 2 mm, preferably 1.5 and 1.8 mm. In a specifically preferred embodiment of the invention, the depth of the guide lines (3) is 1.6 mm.
In the pencil production method of the present invention, there should be a certain distance between the guide lines (3) formed on the slat in furrowing step. In case this distance is less than required, in other words, in case the formed guide lines (3) are too close to each other, the movement of the slat on the lower plate cannot be linear. The distribution of the guide lines (3) made with furrowing along the width of the slat enables the slat not to lose its linearity against the force applied by the blade.
According to this, in another embodiment of the invention, the distance between the guide lines (3) made in furrowing step is between 20 to 25 mm. In a particularly preferred embodiment of the invention, the said distance is between 22 and 24 cm. In the pencil production method of the present invention, the number of grooves made on the slat in order to produce pencil can be between 7 and 15. The formation of side waste which is aimed to be solved with the method of the present invention is generally seen in slats with 9 grooves. For this reason, in a preferred configuration of the invention, the number of graphite grooves made in the slat used in pencil production is preferably 9.
In the pencil production method of the present invention, in furrowing step for producing pencil, a plate (4) is used which is suitable for the sizes of the slat used for making the said furrows and allows the blades enabling the double furrow to be made on the slat to form cutting the slat with suitable intervals. The said plate (4) is specifically designed according to the dimensions of the slat to be cut and the guide lines (3) to be formed on the slat, and it comprises a double furrow similar to the one on the slat enabling to pass between the blades according to the double furrows to be made. According to another aspect, the invention relates to a plate (4) used in the pencil production method of the present invention. A perspective view of a plate (4) according to preferred embodiment of the invention is shown in Figure 4. A plate (4) used in the pencil production method of the present invention is characterized in that it has at least two guide lines (3).
In the plate (4) used in a preferred configuration of the invention, the distance between the guide lines (3) is between 20 and 25 mm. In a particularly preferred configuration of the invention, the said distance is between 22 and 24 mm. The representative view of the plate (5) of the present invention is shown in Figure 5.
According to the production method of the present invention, the length x width x thickness measurements of the used slat can be between 183 to 185 mm x 70 to 72 mm x 4.9 to 5.5 mm.
In the production method of the present invention, the shape of the grooves made on the surface of the slat on which the groove is made (1) can be in a form selected from round, rectangle, pentagon, and triangle.
In several cases, depending on the machine wherein the machining is performed the steps of making the guide lines (3) and making the grooves can be performed together.
According to another aspect, the present invention relates to a use of a slat having at least two guide lines (3) in a pencil production method. In this use, the depth of the guide lines (3) on the surface of the slat on which the guide line is made (2) varies between 1 to 2 mm, preferably 1.5 to 1.8 mm. In a more preferred use of the slat, the depth of the guide lines (3) on the surface of the slat (2) is 1.6 mm.
In the use of the present invention, the distance between at least two guide lines (3) of the slat having at least two guide lines (3) varies between 20 and 25 mm. In a particularly preferred embodiment of the invention, the said distance is between 22 and 24 mm.
In the use of the present invention, the number of the graphite grooves made on the surface of the slat on which the groove is made (1) can be between 7 and 10. In the slat of the present invention, the number of the graphite grooves made on the surface of the slat on which the groove is made (1) is preferably 9.
In the use of the present invention, the length x width x thickness measurements of the slat can be between 183 to 185 mm x 70 to 72 mm x 4.9 to 5.5 mm.
Claims
1. A pencil production method comprising the steps of
• making guide lines (3) on the surface of the slat on which the guide line is made (2) in step of furrowing,
• making grooves by using a plate (4) on the surface of the machined slat on which the groove is made (1),
• gluing the graphite grooves, and placing the graphite into its slot,
• covering a second slat with guide lines (3) thereon and drying in a press as double slat,
• sizing the double slat,
• making a raw pencil with machining; wherein the said pencil production method is characterized in that at least two guide lines (3) are made in furrowing step.
2. A method according to claim 1 , characterized in that the number of guide lines (3) made in furrowing step is two.
3. A method according to claim 1 , characterized in that the depth of guide lines (3) made in furrowing step is between 1 to 2 mm.
4. A method according to claim 1 , characterized in that the distance between the guide lines (3) made in furrowing step is between 20 and 25 mm.
5. A method according to claim 1 , characterized in that the number of graphite grooves is between 7 and 15.
6. A method according to claim 4, characterized in that the number of graphite grooves is 9.
7. A method according to any one of the preceding claims, characterized in that the steps of making guide lines (3) and making grooves can be performed together.
8. A plate (4) used in a method according to any one of the preceding claims, characterized in that it has at least two guide lines (3).
9. A plate (4) according to claim 10, characterized in that the distance between the guide lines (3) in the plate (4) made is between 20 and 25 cm.
10. A use of a slat having at least two guide lines (3) in a pencil production method.
11. A use according to claim 12, characterized in that the depth of the guide lines (3) is between 1 and 2 mm.
12. A use according to claim 12, characterized in that the distance between the guide lines (3) is between 20 and 25 mm.
13. A use according to claim 12, characterized in that the number of graphite grooves in the slat is between 7 and 15.
14. A use according to any one the claims 12 to 13, characterized in that the slat has two guide lines (3).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/TR2016/000161 WO2018088973A1 (en) | 2016-11-09 | 2016-11-09 | A pencil production method |
| EP16831847.5A EP3538380A1 (en) | 2016-11-09 | 2016-11-09 | A pencil production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/TR2016/000161 WO2018088973A1 (en) | 2016-11-09 | 2016-11-09 | A pencil production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018088973A1 true WO2018088973A1 (en) | 2018-05-17 |
Family
ID=57944477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2016/000161 WO2018088973A1 (en) | 2016-11-09 | 2016-11-09 | A pencil production method |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3538380A1 (en) |
| WO (1) | WO2018088973A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112238695A (en) * | 2020-10-16 | 2021-01-19 | 靖州县金心笔业有限责任公司 | Automatic change environment-friendly pencil production facility |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR959830A (en) * | 1950-04-06 | |||
| FR1034095A (en) * | 1951-03-17 | 1953-07-17 | Process for manufacturing pencils and pencils conforming to those obtained by this process | |
| DE918354C (en) * | 1952-09-12 | 1954-09-23 | Karl Zuber Dipl Ing | Machine for the production of grooved pencil boards |
| DE3330119A1 (en) * | 1983-08-20 | 1985-03-07 | Fa. J.S. Staedtler, 8500 Nürnberg | PEN OR CHALK AND METHOD FOR THE PRODUCTION THEREOF |
| GB2348172A (en) * | 1999-02-10 | 2000-09-27 | Dixon Ticonderoga Company | Coloured pencil with profiled core and slat groove to prevent the lead from rotating |
| US6171096B1 (en) * | 1998-02-13 | 2001-01-09 | California Cedar Products Company | Die for making extruded pencil blank |
-
2016
- 2016-11-09 WO PCT/TR2016/000161 patent/WO2018088973A1/en unknown
- 2016-11-09 EP EP16831847.5A patent/EP3538380A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR959830A (en) * | 1950-04-06 | |||
| FR1034095A (en) * | 1951-03-17 | 1953-07-17 | Process for manufacturing pencils and pencils conforming to those obtained by this process | |
| DE918354C (en) * | 1952-09-12 | 1954-09-23 | Karl Zuber Dipl Ing | Machine for the production of grooved pencil boards |
| DE3330119A1 (en) * | 1983-08-20 | 1985-03-07 | Fa. J.S. Staedtler, 8500 Nürnberg | PEN OR CHALK AND METHOD FOR THE PRODUCTION THEREOF |
| US6171096B1 (en) * | 1998-02-13 | 2001-01-09 | California Cedar Products Company | Die for making extruded pencil blank |
| GB2348172A (en) * | 1999-02-10 | 2000-09-27 | Dixon Ticonderoga Company | Coloured pencil with profiled core and slat groove to prevent the lead from rotating |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112238695A (en) * | 2020-10-16 | 2021-01-19 | 靖州县金心笔业有限责任公司 | Automatic change environment-friendly pencil production facility |
| CN112238695B (en) * | 2020-10-16 | 2021-07-23 | 靖州县金心笔业有限责任公司 | Automatic change environment-friendly pencil production facility |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3538380A1 (en) | 2019-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103052459A (en) | Contour end mill | |
| US7918032B2 (en) | Ruler with abrasive edge | |
| CN104203470B (en) | Milling cutter | |
| CN104703736B (en) | Cutting inserts and cutting tool | |
| CN104385345B (en) | A kind of method using major and minor blade to carry out mechanical scratching diffraction grating | |
| US20160175944A1 (en) | Cutting tool with asymmetric structures on cutting teeth | |
| WO2018088973A1 (en) | A pencil production method | |
| US8448887B2 (en) | Food grater | |
| US20060245838A1 (en) | One-piece end milling cutter | |
| KR101475982B1 (en) | Cutting rules for cutting of flat materials | |
| US20170297048A1 (en) | Holding device for the surface treatment of bar cutters | |
| US20150090090A1 (en) | Cutting or stamping tool | |
| EP2869960B1 (en) | Saw chain depth gauge filing template | |
| CN106272721B (en) | A kind of ceramics wood cutter | |
| JP5219351B2 (en) | Press molding die and positive chip manufacturing method | |
| US9764396B2 (en) | Disposable multi-edge carving blade | |
| US20150367428A1 (en) | Rotary cutting tool | |
| US2048058A (en) | Cutter | |
| CN102133056A (en) | Food grater | |
| EP2635412B1 (en) | Slidable blade to be mounted on a drum of tobacco cutter | |
| CN207577450U (en) | A kind of processing mobile phone miniature parts bloom rose reamer | |
| US1814763A (en) | Cutting tool | |
| US20180117684A1 (en) | Milling cutter | |
| CN103317188A (en) | Surface broach | |
| DE102013011607B4 (en) | grain iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16831847 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2016831847 Country of ref document: EP Effective date: 20190611 |