JPH0219735B2 - - Google Patents
Info
- Publication number
- JPH0219735B2 JPH0219735B2 JP58212126A JP21212683A JPH0219735B2 JP H0219735 B2 JPH0219735 B2 JP H0219735B2 JP 58212126 A JP58212126 A JP 58212126A JP 21212683 A JP21212683 A JP 21212683A JP H0219735 B2 JPH0219735 B2 JP H0219735B2
- Authority
- JP
- Japan
- Prior art keywords
- tip
- ball
- holding hole
- ball holding
- core pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 6
- 238000002788 crimping Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Pens And Brushes (AREA)
Description
【発明の詳細な説明】
本発明はボールペンチツプを金属細管から製造
する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a ballpoint pen tip from a metal capillary tube.
ボールペンチツプはその先端が先細状を呈し、
又、内部にはボール抱持孔、ボール台座、及びイ
ンキ導電溝等が形成されるのが一般的である。 The ballpoint pen tip has a tapered tip,
Further, a ball holding hole, a ball pedestal, an ink conductive groove, etc. are generally formed inside.
従来、斯様なボールペンチツプを製造する方法
としては次のようなものがある。 Conventionally, there are the following methods for manufacturing such ballpoint pen tips.
先ず、無垢材から削り出しにより製造する方法
である。次に金属細管を用いその先端部をその外
面全周にわたつて内方向に押圧し先端に向かうに
従い次第に先細状に窄めた後、その先端口から工
具を挿入してボール抱持孔、ボール台座及びイン
キ導通溝を切削加工又はブローチ加工等により製
造する方法である。 First, there is a method of manufacturing by machining from solid wood. Next, using a metal thin tube, press the tip end inward over the entire outer circumference and gradually narrow it into a tapered shape toward the tip, and then insert a tool from the tip opening to open the ball holding hole. This is a method of manufacturing the pedestal and ink conduction grooves by cutting, broaching, or the like.
前者は前述したボール抱持孔等の各個所や更に
はインキ供給のためのバツク孔も加工する必要が
あり切削量が多く生産性が低い欠点がある。後者
は前者に比べ予め基礎孔を有しているので切削量
も少なく生産性も良く更には工具の摩耗も減少す
るなど利点もあるが、次のような問題も残してい
る。即ち工程中に先端部を窄める塑性加工が入つ
ているため、切削性には優れているが塑性変形に
は割れるなどして脆弱な快削性ステンレス等の材
料が使用できず、塑性加工に向いたSUS 304、
316といつた材料しか使用できないことである。
ところがこれらの材料は難削材であり、切削加工
やブローチ加工を行うと工具の摩耗や損傷が激し
く生産性も低下し安価で高品質なチツプの製造は
あまり期待できない。 The former method requires machining of various parts such as the aforementioned ball holding holes, as well as back holes for ink supply, resulting in a large amount of cutting and low productivity. Compared to the former, the latter has the advantage of having a base hole in advance, so it requires less cutting, improves productivity, and reduces tool wear, but it still has the following problems. In other words, because the process involves plastic processing to narrow the tip, materials such as free-cutting stainless steel, which has excellent machinability but is fragile due to plastic deformation such as cracking, cannot be used, and plastic processing is not possible. SUS 304 suitable for
316 is the only material that can be used.
However, these materials are difficult to cut, and cutting or broaching causes severe wear and damage to the tools, reducing productivity and making it difficult to produce inexpensive, high-quality chips.
本発明は上記の欠点を解消するため、製造工程
中から切削加工、ブローチ加工を無くして（最小
限の切削加工は残る場合がある）、生産性の向上、
工具代の低減、品質の安定化を図ることができ安
価な高品質なボールペンチツプを製造できる方法
の提供を目的とする。 In order to eliminate the above-mentioned drawbacks, the present invention eliminates cutting and broaching from the manufacturing process (minimal cutting may remain), improving productivity,
The purpose of the present invention is to provide a method for manufacturing inexpensive, high-quality ballpoint pen tips that can reduce tool costs and stabilize quality.
本発明は金属細管の先端部をその外面全周にわ
たつて内方向に押圧して先端に向かつて次第に先
細状に窄める加工工程の適宜な段階に於て、円柱
体部とその先端側に段部及び外面に少なくとも１
個所以上の角部を有する先端柱体部を有するコア
ピンをその先端柱体部を先にして金属細管内にそ
の先端口から円柱体部の所要位置まで挿入し、そ
の後再び前記の工程を続行して円柱体部によりボ
ール抱持孔を、段部によりボール台座を、更に先
端柱体部の外面角部によりインキ導通溝を夫々形
づくり、コアピンを抜出したのちボール抱持孔に
ボールを嵌入して金属細管の先端口縁をカシメ加
工することを特徴として構成され、以下その実施
例を図面に従い説明する。 The present invention is designed to press the distal end of a metal thin tube inward over the entire outer circumference of the tube so as to gradually taper toward the distal end. at least 1 on the step and on the outer surface
A core pin having a tip column body having more than one corner is inserted into the metal capillary tube from its tip opening to the desired position of the column body, with the tip column body first, and then the above process is continued again. Then, the cylindrical body part forms a ball holding hole, the step part forms a ball pedestal, and the outer corner of the tip column part forms an ink conduction groove, and after the core pin is pulled out, the ball is inserted into the ball holding hole. The structure is characterized by caulking the tip edge of the metal thin tube, and examples thereof will be described below with reference to the drawings.
先ず、第１図に示すように金属細管１の先端部
をその外面全周にわたつて窄め用ロール等により
内方向に一様に押圧し先端に向かつて次第に先細
状に窄める加工を施し、この加工工程の適宜な段
階即ち金属細管１の先端口２の内径がボール抱持
孔３の内径の設定値よりも若干大きめの段階で、
第２図に示すようにボール抱持孔３の内径と同寸
の外径を有する円柱体部４とその先端に傾斜状の
段部５と更にその先端に三角柱体部６を有するコ
アピン７をその三角柱体部６を先にして金属細管
内部にその先端口２から円柱体部４の所要位置
（ボール抱持孔３の軸方向の長さと同じ距離だけ
段部５から離れた位置）まで挿入し、その後再び
前述の押圧工程を続行しコアピン７の円柱体部４
によりボール抱持孔３を、段部５によりボール台
座８を、そして三角柱体部６の角部９によりイン
キ導通溝１０を夫々形づくり、その後コアピン７
を抜出してボール抱持孔３にボール１１を嵌入し
先端口縁部を内方に折曲するカシメ加工を行なう
ものである。 First, as shown in Fig. 1, the tip of the metal tube 1 is uniformly pressed inward by a tightening roll or the like over the entire outer circumference of the tube to gradually narrow it toward the tip. At an appropriate stage of this processing process, that is, at a stage when the inner diameter of the tip opening 2 of the metal thin tube 1 is slightly larger than the set value of the inner diameter of the ball holding hole 3,
As shown in FIG. 2, a core pin 7 has a cylindrical body part 4 having the same outer diameter as the inner diameter of the ball holding hole 3, an inclined stepped part 5 at its tip, and a triangular prism body part 6 at its tip. Insert the triangular prism part 6 first into the metal thin tube from its tip opening 2 to the desired position of the cylinder part 4 (a position away from the stepped part 5 by the same distance as the axial length of the ball holding hole 3). Then, the above-mentioned pressing process is continued again, and the cylindrical body part 4 of the core pin 7 is
to form the ball holding hole 3, the step part 5 to form the ball pedestal 8, and the corner part 9 of the triangular prism body part 6 to form the ink conduction groove 10, and then the core pin 7
The ball 11 is pulled out, inserted into the ball holding hole 3, and caulked by bending the tip end edge inward.
尚、金属細管１の先端口縁部が窄め加工により
軸方向に一定にならない場合があるが、この場合
はその先端口縁部を切削により面取り加工して一
定にするか、又はボールを嵌入してカシメ加工を
する際にロールカシメ等の方法でカシメロールの
角とボールとで押切り、不要部の縁の除去とカシ
メ加工を同時に行なつて一定にすることができ
る。 Note that the tip edge of the metal tube 1 may not be constant in the axial direction due to narrowing, but in this case, the tip edge should be chamfered by cutting to make it constant, or a ball should be inserted. When crimping is performed, the corner of the crimping roll is pressed with a ball using a method such as roll crimping, and unnecessary edges can be removed and crimping can be performed at the same time to make it constant.
本発明は叙上の如く構成されるものであり、塑
性加工し易い材料ならば、たとえSUS 304とい
つた難削材にしてもボールペンチツプを塑性加工
のみで製造できるので、耐久性に優れた材料の選
択が可能となる。又、切削工程を無くしたことに
より切削工具の摩耗や切削機械の精度からくるボ
ール抱持孔のバラツキが無くなり、更には切屑が
発生しないために切屑の残留によるボールの回転
不良やインキの安定供給の阻害等の虞れが無くな
つて筆記性能の良い高品質のボールペンチツプが
提供できることになる。 The present invention is constructed as described above, and as long as the material is easy to plastically process, even if it is made of a difficult-to-cut material such as SUS 304, the ballpoint pen tip can be manufactured only by plastically working, so it has excellent durability. Material selection becomes possible. In addition, eliminating the cutting process eliminates variations in ball holding holes caused by wear of cutting tools and precision of cutting machines, and since no chips are generated, ball rotation problems due to residual chips and stable ink supply are eliminated. This eliminates the risk of interference, etc., making it possible to provide a high-quality ballpoint pen tip with good writing performance.
又、切削工程が無くなり製造工程が短縮して生
産性が向上することは言うまでも無い。 Moreover, it goes without saying that the cutting process is eliminated, the manufacturing process is shortened, and productivity is improved.
本発明は以上のように耐久性に優れ、且つ高品
質を有し、更には安価なボールペンチツプの製造
に優れた効果を有するものである。 As described above, the present invention has excellent durability and high quality, and is also effective in producing inexpensive ballpoint pen tips.
図は本発明の実施例を示すもので、第１図は製
造工程図、第２図はコアピンの斜視図、第３図は
完成されたボールペンチツプの縦断面図、第４図
は第３図Ａ−Ａ線に於けるボールを除いた横断面
図である。
１……金属細管、２……先端口、３……ボール
抱持孔、４……円柱体部、５……段部、６……三
角柱体部、７……コアピン、８……ボール台座、
９……三角柱体部の角部、１０……インキ導通
溝、１１……ボール。
The figures show an embodiment of the present invention, and Fig. 1 is a manufacturing process diagram, Fig. 2 is a perspective view of a core pin, Fig. 3 is a vertical cross-sectional view of a completed ballpoint pen tip, and Fig. 4 is a Fig. 3. FIG. 2 is a cross-sectional view taken along line A-A with the ball removed. 1...Metal thin tube, 2...Tip opening, 3...Ball holding hole, 4...Cylindrical body part, 5...Step part, 6...Triangular prism body part, 7...Core pin, 8...Ball pedestal ,
9...Corner of triangular prism body, 10...Ink conduction groove, 11...Ball.
Claims (1)
内方向に押圧して先端に向かつて次第に先細状に
窄める加工工程の適宜な段階に於て、円柱体部と
その先端側に段部及び外面に少なくとも１個所以
上の角部を有する先端柱体部を有するコアピンを
その先端柱体部を先にして金属細管内にその先端
口から円柱体部の所要位置まで挿入し、その後再
び前記の工程を続行して円柱体部によりボール抱
持孔を、段部によりボール台座を、更に先端柱体
部の外面角部によりインキ導通溝を夫々形づく
り、コアピンを抜出したのちボール抱持孔にボー
ルを嵌入して金属細管の先端口縁をカシメ加工す
ることを特徴とするボールペンチツプの製造方
法。1. At an appropriate stage of the processing process in which the tip of the metal tube is pressed inward over the entire outer circumference and gradually narrows toward the tip, a step is formed on the cylindrical body and on the tip side. A core pin having a tip column body having at least one corner on the outer surface and the outer surface is inserted into the metal capillary from its tip opening to the desired position of the column body, with the tip column body first, and then inserted again. Continuing the above steps, a ball holding hole is formed using the cylindrical body, a ball pedestal is formed using the stepped portion, and an ink conduction groove is formed using the outer corner of the tip column, and after the core pin is extracted, the ball holding hole is formed. A method for producing a ballpoint pen tip, which comprises inserting a ball into the tip and caulking the tip edge of a thin metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58212126A JPS60104398A (en) | 1983-11-11 | 1983-11-11 | Manufacture of ball pen chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58212126A JPS60104398A (en) | 1983-11-11 | 1983-11-11 | Manufacture of ball pen chip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60104398A JPS60104398A (en) | 1985-06-08 |
| JPH0219735B2 true JPH0219735B2 (en) | 1990-05-02 |
Family
ID=16617313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58212126A Granted JPS60104398A (en) | 1983-11-11 | 1983-11-11 | Manufacture of ball pen chip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60104398A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2822373B2 (en) * | 1986-12-27 | 1998-11-11 | ぺんてる株式会社 | Metal ball point pliers |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5519760A (en) * | 1978-07-28 | 1980-02-12 | Yuasa Battery Co Ltd | Alkali cell |
-
1983
- 1983-11-11 JP JP58212126A patent/JPS60104398A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5519760A (en) * | 1978-07-28 | 1980-02-12 | Yuasa Battery Co Ltd | Alkali cell |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60104398A (en) | 1985-06-08 |
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