JP3078422B2 - Molds and molds for roller manufacturing - Google Patents
Molds and molds for roller manufacturingInfo
- Publication number
- JP3078422B2 JP3078422B2 JP10977093A JP10977093A JP3078422B2 JP 3078422 B2 JP3078422 B2 JP 3078422B2 JP 10977093 A JP10977093 A JP 10977093A JP 10977093 A JP10977093 A JP 10977093A JP 3078422 B2 JP3078422 B2 JP 3078422B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- mold members
- members
- shape
- diameter
- 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
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は金型に関し、寸法精度
の高い製品を製造するに適した金型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold, and more particularly to a mold suitable for producing a product having high dimensional accuracy.
【０００２】[0002]
【従来の技術】近年コピー装置やプリンタ或いはファク
シミリ等において、紙を送るためのゴムなどの樹脂から
形成されたローラが多用されている。この紙送り用のロ
ーラは端部から端部まで同一径であるよりも、図６に示
すように中央部が径大になった所謂クラウン形状のもの
が紙を直線的に送ることができることが知られている。
このようなローラの寸法は、例えば図６の例では長手方
向の長さＬが２２４ｍｍ程度に対して幅ｗが端部で１
２．６ｍｍ程度と長尺材になっている。また、クラウン
形状は端部１２．６ｍｍ径に対して中央部で１２．６５
５ｍｍ程度であり、μｍオーダの極めて微小な径差にな
っている。2. Description of the Related Art In recent years, rollers formed of a resin such as rubber for feeding paper have been frequently used in copying machines, printers, facsimile machines, and the like. The so-called crown-shaped roller having a central portion having a large diameter as shown in FIG. 6 can feed the paper linearly, rather than having the same diameter from the end portion to the end portion. Are known.
For example, in the example shown in FIG. 6, the length L of the roller in the longitudinal direction is about 224 mm and the width w is 1 at the end.
It is a long material of about 2.6 mm. The crown shape has a diameter of 12.65 at the center with respect to a diameter of 12.6 mm at the end.
The diameter difference is about 5 mm, which is a very small diameter difference on the order of μm.
【０００３】[0003]
【発明が解決しようとする課題】上記したようなクラウ
ン形状のローラをモールド成形するための金型の製作は
従来非常に難しかった。即ち、金型内部の切削加工を行
う場合、素材自体の撓みがあるために上記したような微
小な径差を施すのが難しく、通常縦横比で８対１程度の
長尺材が限界とされている。また、半径方向に半割の金
型を放電加工により製作する方法も考えられるが、放電
加工では切削加工よりも更に精度が劣る欠点がある。以
上のように、現段階では微小な径差を有する長尺材を成
形するための金型の製作が難しく、本発明はこのような
現状を打開することを目的とする。Conventionally, it has been very difficult to manufacture a mold for molding the crown-shaped roller as described above. That is, when cutting the inside of the mold, it is difficult to make the small diameter difference as described above due to the bending of the material itself, and a long material having an aspect ratio of about 8 to 1 is usually limited. ing. Further, a method of manufacturing a half mold in the radial direction by electric discharge machining is also conceivable. However, electric discharge machining has a disadvantage that accuracy is further inferior to cutting. As described above, at this stage, it is difficult to manufacture a mold for molding a long material having a small diameter difference, and the present invention aims to overcome such a situation.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に本発明の金型は、長さ方向に少なくとも２つに分割さ
れた２以上の金型部材と、該金型部材を連結する手段と
を備えたことを特徴とする。In order to achieve the above-mentioned object, a mold according to the present invention comprises: at least two mold members divided into at least two in a longitudinal direction; and means for connecting the mold members. And characterized in that:
【０００５】[0005]
【作用】２以上に分割された金型部材は、高精度に切削
加工することができ、精度の高い内部形状を有する。こ
の金型部材を連結する手段により連結して、一体加工し
た金型と同じ状態にしてモールド加工に使用する。The mold member divided into two or more parts can be cut with high precision and has a highly accurate internal shape. The mold members are connected by a connecting means so as to be in the same state as the integrally processed mold and used for molding.
【０００６】[0006]
【実施例】以下本発明の実施例を図面に基づいて説明す
る。図１において、この金型Ａは２つの金型部材１、２
と連結具６とから形成されている。２つの金型部材１、
２は同一の形状をなしており、円形の管形状になってい
る。各金型部材１、２の型内部の軸線方向長さ（長手方
向）は、約１１１．８５ｍｍ、その内径は約１２．６ｍ
ｍ程度になっており、約８：１以上の寸法比になってい
る。この２つの金型部材１、２を連結具６によりつなぐ
ことにより長さ２２３．７ｍｍ、外径１２ｍｍのローラ
を成形できるように構成されている。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, this mold A includes two mold members 1, 2
And the connector 6. Two mold members 1,
2 has the same shape and has a circular tube shape. The axial length (longitudinal direction) inside the mold of each of the mold members 1 and 2 is about 111.85 mm, and the inner diameter is about 12.6 m.
m and a dimensional ratio of about 8: 1 or more. A roller having a length of 223.7 mm and an outer diameter of 12 mm can be formed by connecting the two mold members 1 and 2 with a connecting tool 6.
【０００７】金型部材１、２の内面は、微視的に見ると
図４に示すようにクラウン形状内面１０、２０になって
おり、図示するようにＤ１点で最も内径が大きく、約１
２．６５５ｍｍになっている。また両端のＤ３点で最も
内径が小さく約１２．６ｍｍ程度になっている。従っ
て、Ｄ１点とＤ３点での内径差は０．０５５ｍｍ（５５
μｍ）程度になっており、Ｄ１点における径の１００分
の１以下になっている。金型Ａ内部の切削加工は、分割
した金型部材１と２毎に行うことにより、前記したよう
な微小な径差を付けることが可能になっている。金型部
材１と金型部材２は図１及び図２に示すようにＤ１点で
接続されるようになっておりＤ１点近傍の外径が小さく
なり、図３に示す管状の連結具６に両側から嵌合して連
結されるようになっている。金型部材１、２と連結具６
の連結は必要に応じて、ピンやボルト等により締結すれ
ば良い。金型部材１と金型部材２の継目には、研磨加工
などを施すのが望ましい。なお、金型部材１と２の連結
は、金型部材１と２に夫々嵌合部を設けて圧入等の手段
によって実現しても良いし、或いは溶接等の手段によっ
て連結しても良く、上記連結具６に限定されるものでは
ない。The inner surfaces of the mold members 1 and 2 are, when viewed microscopically, crown-shaped inner surfaces 10 and 20 as shown in FIG. 4, and as shown in FIG.
2.655 mm. In addition, the inside diameter is the smallest at the point D3 at both ends and is about 12.6 mm. Therefore, the inner diameter difference between the points D1 and D3 is 0.055 mm (55
μm), which is less than 1/100 of the diameter at the point D1. By cutting the inside of the mold A for each of the divided mold members 1 and 2, it is possible to provide a small diameter difference as described above. The mold member 1 and the mold member 2 are connected at a point D1 as shown in FIGS. 1 and 2, and the outer diameter near the point D1 is reduced. They are fitted and connected from both sides. Mold members 1 and 2 and connector 6
May be fastened with pins, bolts or the like as necessary. It is desirable that the joint between the mold member 1 and the mold member 2 be polished or the like. The connection between the mold members 1 and 2 may be realized by means such as press-fitting by providing a fitting portion on each of the mold members 1 and 2, or may be connected by means such as welding. However, the present invention is not limited to the above-mentioned connecting tool 6.
【０００８】モールド加工の際には、図５に示すように
金型部材１、２と連結具６により形成された金型Ａの両
端に蓋３と蓋４を装着し、該蓋３と蓋４にその両端を指
示された芯金５を金型Ａ内部に挿入して、ゴム等の弾性
体の原料を注入して図６（Ａ）に示すように芯金５に一
体的にローラＢを形成する。或いは図６（Ｂ）に示すよ
うに、中空で且つクラウン形状面Ｃを有するローラＢ'
を成形する。蓋４には注入孔４０が設けられており、こ
こから原料のゴムを注入し、固形化したら蓋３及び蓋４
を外して金型Ａの一端側からローラＢを引き抜くように
なっている。前述したようにクラウン形状面Ｃは径大と
なっているが、その径差は微小であり、且つローラＢは
固形化の際に収縮するから、引き抜き可能である。At the time of molding, as shown in FIG. 5, lids 3 and 4 are attached to both ends of a mold A formed by the mold members 1 and 2 and the connecting member 6, and the lid 3 and the lid 4 is inserted into the mold A with both ends indicated in the mold A, an elastic material such as rubber is injected, and the roller B is integrated with the core 5 as shown in FIG. To form Alternatively, as shown in FIG. 6B, a roller B ′ having a hollow and a crown-shaped surface C is provided.
Is molded. The lid 4 is provided with an injection hole 40, from which raw material rubber is injected and solidified to form the lids 3 and 4.
And the roller B is pulled out from one end of the mold A. As described above, the crown-shaped surface C has a large diameter, but the difference in diameter is small and the roller B contracts during solidification, so that the roller B can be pulled out.
【０００９】以上説明した構成では金型Ａを２つの金型
部材１、２により形成しているが、これに限定されるこ
となく、３以上の多数の金型部材により構成することも
可能である。また、クラウン形状面Ｃを有するローラＢ
の成形用の金型Ａについて説明したが、これに限定され
るものではなく、従来切削加工では十分な精度を上げる
ことが出来なかった、他の精密加工を要する金型にも適
用可能である。また、クラウン形状に限らず、両端部が
径大の逆クラウン形状を形成することも可能である。In the above-described configuration, the mold A is formed by the two mold members 1 and 2. However, the present invention is not limited to this, and the mold A may be constituted by three or more mold members. is there. A roller B having a crown-shaped surface C;
Although the mold A for molding has been described, the present invention is not limited to this, and the present invention can be applied to other molds requiring precision machining, which have not been able to achieve sufficient precision by conventional cutting. . In addition, not only the crown shape but also an inverted crown shape in which both ends are large in diameter can be formed.
【００１０】以上説明した構成によれば、金型Ａは長手
方向に複数に分割され、金型部材１、２から構成される
ため、金型部材１、２の型内部の精密加工が可能にな
り、微小な径差のクラウン形状面Ｃを有するローラＢを
成形するための金型Ａを作成することが可能になる。According to the configuration described above, the mold A is divided into a plurality of parts in the longitudinal direction and is constituted by the mold members 1 and 2, so that the inside of the mold of the mold members 1 and 2 can be precisely machined. Thus, a mold A for forming the roller B having the crown-shaped surface C having a small difference in diameter can be manufactured.
【００１１】[0011]
【発明の効果】以上説明したように本発明の金型は、長
さ方向に少なくとも２つに分割された２以上の金型部材
と、該金型部材を連結する手段とを備えているため、高
精度の金型を得ることが可能になる。As described above, the mold of the present invention is provided with at least two mold members divided into at least two in the longitudinal direction and means for connecting the mold members. , A highly accurate mold can be obtained.
【図１】本発明の一実施例を示す側断面図。FIG. 1 is a side sectional view showing one embodiment of the present invention.
【図２】本発明の一実施例の分解した状態を示す側断面
図。FIG. 2 is a side sectional view showing an exploded state of one embodiment of the present invention.
【図３】本発明の連結具６の一実施例を示す側断面図。FIG. 3 is a side sectional view showing an embodiment of the connector 6 of the present invention.
【図４】本発明の一実施例の金型Ａの内面形状を拡大的
に示す説明図。FIG. 4 is an explanatory diagram showing an enlarged inner surface shape of a mold A according to one embodiment of the present invention.
【図５】本発明の一実施例の使用状態を示す側断面図。FIG. 5 is a side sectional view showing a use state of one embodiment of the present invention.
【図６】本発明の金型Ａにより製作されたローラＢの一
例を示す側断面図。FIG. 6 is a side sectional view showing an example of a roller B manufactured by a mold A of the present invention.
１：金型部材、２：金型部材、３：蓋、４：蓋、５：芯
金、６：連結具、１０：クラウン形状内面、４０：注入
孔。1: Mold member, 2: Mold member, 3: Lid, 4: Lid, 5: Core, 6: Connector, 10: Crown inner surface, 40: Injection hole.
フロントページの続き (56)参考文献 特開 平２−182420（ＪＰ，Ａ) 実開 平３−45107（ＪＰ，Ｕ) 実開 昭59−56019（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 33/38 B29C 33/42 Continuation of the front page (56) References JP-A-2-182420 (JP, A) JP-A-3-45107 (JP, U) JP-A-59-56019 (JP, U) (58) Fields investigated (Int) .Cl. 7 , DB name) B29C 33/38 B29C 33/42
Claims (7)
２以上の金型部材と、 該金型部材を連結する手段と、を備え、 該２以上の金型部材が連結された時に形成される内部形
状が、少なくとも長さ方向に非均一である、 ことを特徴とする金型。An apparatus comprising: two or more mold members divided into at least two lengthwise directions; and means for connecting the mold members, wherein the mold member is formed when the two or more mold members are connected. Wherein the internal shape to be formed is non-uniform at least in the longitudinal direction.
が、幅方向最大寸法に対してほぼ８以上の比率である、 請求項１に記載の金型。2. The mold according to claim 1, wherein the maximum dimension in the longitudinal direction inside the mold of each mold member is a ratio of about 8 or more to the maximum dimension in the width direction.
２以上の金型部材と、該金型部材を連結する手段と、を
備え、 該２以上の金型部材が連結された時に形成される金型内
部形状が、中央部径大のクラウン形状を有するロール形
状である、 ことを特徴とする金型。3. The apparatus further comprising: two or more mold members divided into at least two lengthwise directions; and means for connecting the mold members, wherein the mold member is formed when the two or more mold members are connected. Wherein the inner shape of the die to be formed is a roll shape having a crown shape with a large diameter at the center.
が、幅方向最大寸法に対してほぼ８以上の比率である、 請求項３に記載の金型。4. The mold according to claim 3, wherein the maximum dimension in the longitudinal direction inside the mold of each mold member is about 8 or more to the maximum dimension in the width direction.
部径の１００分の１以下である、 請求項３に記載の金型。5. The mold according to claim 3, wherein the difference between the center diameter and the end diameter inside the mold is 1/100 or less of the center diameter.
２以上の金型部材と、該金型部材を連結する手段と、を
備え、 該２以上の金型部材が連結された時に形成される金型内
部形状が、両端部径大の逆クラウン形状を有するロール
形状である、 ことを特徴とする金型。6. A device comprising: two or more mold members divided into at least two in a length direction; and means for connecting the mold members, wherein the mold member is formed when the two or more mold members are connected. Wherein the inner shape of the die to be formed is a roll shape having an inverted crown shape with a large diameter at both ends.
部材と、 該２つの金型部材を連結する手段と、を備え、 該２つの金型部材は、ローラを形成するための内部形状
を有するようにそれぞれ別個に加工された、 ことを特徴とするローラ製造用金型。7. A mold device comprising: two mold members divided into two in a longitudinal direction; and means for connecting the two mold members, wherein the two mold members are used to form a roller. A roller manufacturing die, which is separately processed so as to have an internal shape of:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10977093A JP3078422B2 (en) | 1993-04-14 | 1993-04-14 | Molds and molds for roller manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10977093A JP3078422B2 (en) | 1993-04-14 | 1993-04-14 | Molds and molds for roller manufacturing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06297467A JPH06297467A (en) | 1994-10-25 |
| JP3078422B2 true JP3078422B2 (en) | 2000-08-21 |
Family
ID=14518794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10977093A Expired - Lifetime JP3078422B2 (en) | 1993-04-14 | 1993-04-14 | Molds and molds for roller manufacturing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3078422B2 (en) |
-
1993
- 1993-04-14 JP JP10977093A patent/JP3078422B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06297467A (en) | 1994-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH03501899A (en) | Optical connector with plastic alignment ferrule | |
| JP3078422B2 (en) | Molds and molds for roller manufacturing | |
| EP0352255B1 (en) | A method and an apparatus for the production of ribbed pipes | |
| JP3078600B2 (en) | Long roller and its manufacturing apparatus | |
| CN103213252B (en) | Method for manufacturing rubber roller | |
| JP3462246B2 (en) | Method of manufacturing commutator and forging die for manufacturing the same | |
| JP3173388B2 (en) | Resin molding die equipment | |
| JP3381813B2 (en) | Green compacting mold | |
| JP2574165B2 (en) | Manufacturing method of magnet roll | |
| JP3789242B2 (en) | Spiral manufacturing type | |
| JPS6145933B2 (en) | ||
| JP3346753B2 (en) | Injection mold | |
| JP2002144365A (en) | Resin sleeve and manufacturing method therefor | |
| JPH0871699A (en) | Core supporting body of metal mold for casting | |
| JP2868319B2 (en) | Internal spline with tooth chamfer | |
| JPS6245865Y2 (en) | ||
| JP3914359B2 (en) | Resin nut, method of manufacturing the same, and screw feeder | |
| JPH11170291A (en) | Manufacture of magnet roller and magnet roller molding die | |
| JPS61117509A (en) | Production of optical fiber connector | |
| JP2002303319A (en) | Guide roller and manufacturing method thereof | |
| JPH0131493Y2 (en) | ||
| JP3142496B2 (en) | Master model for mold making and mold making method using the same | |
| JPH022421B2 (en) | ||
| JP2004249580A (en) | Method for producing mold for molding peripheral surface of molding roll | |
| JPH10315271A (en) | Mold for injection molding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090616 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120616 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130616 Year of fee payment: 13 |
|
| EXPY | Cancellation because of completion of term |