JPH0216018A - Method of molding synthetic resin cylinder and die therefor - Google Patents
Method of molding synthetic resin cylinder and die thereforInfo
- Publication number
- JPH0216018A JPH0216018A JP16654888A JP16654888A JPH0216018A JP H0216018 A JPH0216018 A JP H0216018A JP 16654888 A JP16654888 A JP 16654888A JP 16654888 A JP16654888 A JP 16654888A JP H0216018 A JPH0216018 A JP H0216018A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- resin
- molding
- synthetic resin
- cylinder
- 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.)
- Pending
Links
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 24
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 24
- 238000000465 moulding Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 32
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 239000000945 filler Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000004709 Chlorinated polyethylene Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920013716 polyethylene resin Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はフランジ部を有する合成樹脂筒を一体成形す
る方法及びそれに使用される金型に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for integrally molding a synthetic resin cylinder having a flange portion, and a mold used therein.
従来、フランジ付の合成樹脂筒を製造するには、７ラン
ジ部及び筒部を別途に成形し一体となしていた。また比
較的小径のフランジ付の合成樹脂筒の場合は、成形時に
筒の開口部を外側に押し拡げて７ランジ部を形成させる
方法が知られていた。Conventionally, in order to manufacture a flanged synthetic resin tube, the seven flange portions and the tube portion were separately molded and then integrated. Furthermore, in the case of a flanged synthetic resin cylinder having a relatively small diameter, a method has been known in which seven flange parts are formed by expanding the opening of the cylinder outward during molding.
上記のフランジ部と筒部とを接着する方法は生産性が悪
く、また作業性も劣り、さらに最終製品も接着部の段差
を生じやすい問題点があった。また筒部の開口部を押し
拡げる方法は、フランジ部の肉厚が薄くなり、大口径の
合成樹脂筒のフランジ部を形成させるには不適当である
という問題点がめった。The method of bonding the flange portion and the cylindrical portion described above has poor productivity and poor workability, and furthermore, there are problems in that the final product is likely to have a step difference in the bonded portion. In addition, the method of expanding the opening of the cylindrical portion has the problem that the wall thickness of the flange portion becomes thinner, making it unsuitable for forming the flange portion of a large-diameter synthetic resin cylinder.
本発明は合成樹脂筒の筒部とフランジ部とを同時に一体
成形することができる方法及びそのための金型を提供す
ることにより、上記の課題を解決することを目的とする
。An object of the present invention is to solve the above-mentioned problems by providing a method and a mold for integrally molding the cylindrical part and flange part of a synthetic resin cylinder at the same time.
本発明（第１発明）はすなわち、７ランジ付の合成樹脂
筒を成形するにあたり、溶融樹脂を、樹脂成形用金型の
分割型間に形成され相互に連通して７ランノ部及び筒部
を成形するためのキャビティに加圧流入して充填し冷却
固化させることを特徴とする合成樹脂筒成形方法である
。In other words, the present invention (first invention), when molding a synthetic resin tube with 7 rungs, transfers the molten resin between the split molds of the resin molding mold and communicates with each other to form the 7 rungs and the tube portion. This is a synthetic resin cylinder molding method characterized by filling a molding cavity under pressure and cooling and solidifying the resin.
また本発明（第２発明）は水平方向に筒部を成形し、垂
直方向にフランジ部を成形する７ランジ付の合成樹脂筒
成形用金型であって、互に重合される上型、下型及び中
型よりなり、上型及び下型は一部分離してその分離部分
との間に上記フランジ部を成形するためのキャビティが
形成され、このキャビティに連通して上型及び下型と中
型との間に上記筒部を成形するためのキャビティが形成
され、上型にはその上部に設けられた樹脂苗種より溶融
樹脂を各キャビティに圧入する複数の注入孔、下型には
各キャピテイより空気を排出する複数の排出孔がそれぞ
れ設けられていることを特徴とする合成樹脂筒成形用金
型である。Further, the present invention (second invention) is a mold for molding a synthetic resin cylinder with seven flanges, which forms a cylinder part in the horizontal direction and a flange part in the vertical direction, and includes an upper mold and a lower mold that are superposed on each other. The upper mold and the lower mold are partially separated, and a cavity for molding the flange part is formed between the separated part, and the cavity is communicated with the upper mold, the lower mold, and the middle mold. A cavity for molding the above-mentioned cylindrical part is formed in between, and the upper mold has multiple injection holes through which molten resin is press-fitted into each cavity from a resin seedling provided at the top, and the lower mold has air injection holes from each cavity. This is a mold for molding a synthetic resin cylinder, characterized in that a plurality of discharge holes are respectively provided for discharging.
以下図面により本発明を説明する。図面は本発明金型の
実施例を示し、第１図は断面図、第２図は底面図、第３
図は一部を切欠いた正面図である。The present invention will be explained below with reference to the drawings. The drawings show an embodiment of the mold of the present invention, in which Fig. 1 is a sectional view, Fig. 2 is a bottom view, and Fig. 3 is a bottom view.
The figure is a partially cutaway front view.
第１図、第３図において下型（１）、上型（２）及び中
型（３）は互に重合して本体を形成し、下型の一部（１
°）上型の一部（２°）は分離可能となっている。上型
（２）の上部には樹脂液槽（４）が設けられており、そ
の底部には数個の樹脂注入孔（５）が開孔してキャビテ
ィ（６）に通じている。キャビティ（６）は中型（３）
と上型（２）及び下型（１）との間に筒状に形成され、
合成樹脂筒の筒部成形型をなしている。このキャビティ
（６）の一端部は略直角に外側に折れ曲って合成樹脂筒
のフランジ部の成形型をなしており上記樹脂注入孔（５
）の一部はこのキャビティ（７）に通じている。またキ
ャビティ（７）の−面は上型（２）及び下型（１）に面
しており、他面は取り付はボルト（１２）に設けられた
フランジ外径に略相当する直径を有する円板状の抑え板
（１３）に面している。この取り付はボルト（１２）は
中型（３）と抑え板（１３）とを脱着させるものである
。In FIGS. 1 and 3, the lower mold (1), upper mold (2) and middle mold (3) overlap each other to form a main body, and a part of the lower mold (1)
°) A part (2°) of the upper mold can be separated. A resin liquid tank (4) is provided at the top of the upper mold (2), and several resin injection holes (5) are opened at the bottom thereof and communicate with a cavity (6). Cavity (6) is medium sized (3)
is formed in a cylindrical shape between the upper mold (2) and the lower mold (1),
It is a cylindrical mold for a synthetic resin cylinder. One end of this cavity (6) is bent outward at a substantially right angle to form a mold for the flange portion of the synthetic resin cylinder.
) communicates with this cavity (7). Further, the - side of the cavity (7) faces the upper mold (2) and the lower mold (1), and the other side has a diameter approximately equivalent to the outer diameter of the flange provided on the mounting bolt (12). It faces a disc-shaped restraining plate (13). In this installation, the bolt (12) is used to attach and detach the medium size (3) and the holding plate (13).
なお樹脂苗種（４）には側壁内に電熱器（８）が設けら
れ、また槽内樹脂を上方より加圧して押し出すための押
し出し型（９）が樹脂苗種（４）の側壁面と上下１習動
するように設けられている。The resin seedling (4) is equipped with an electric heater (8) inside the side wall, and an extrusion mold (9) for pressurizing and extruding the resin in the tank from above is connected to the side wall of the resin seedling (4). It is designed to move up and down once.
（１０）はキャビティ（６）（７）内の空気を扱ぎ出す
ために下型（１）に設けられた空気排出孔である。（１
１）は中型（３）に取り付けられたボルト、（１４）は
下型（１）と上型（２）、下型（１゛）と上型（２゛）
及び樹脂苗種（４）を相互に脱着させるために金型の長
手方向に２列に設けられた取り付はボルトである。(10) is an air discharge hole provided in the lower mold (1) for discharging the air inside the cavities (6) and (7). (1
1) is the bolt attached to the middle mold (3), (14) is the lower mold (1) and upper mold (2), the lower mold (1゛) and the upper mold (2゛)
The attachments provided in two rows in the longitudinal direction of the mold for attaching and detaching the resin seedlings (4) to each other are bolts.
本発明方法を実施するには、成形される合成樹脂を樹脂
苗種（４）内で加熱溶融し、押し出し型（９）にて加圧
することにより、樹脂注入孔（５）を通ってキャビティ
（６）（７）に押し出す。キャビティ（６）（７）内の
空気は排出孔（１０）より排出される。このようにして
キャビティ（６）（７）内に樹脂が充填され、フランジ
付の合成樹脂筒が成形される。排出孔（１０）より空気
が扱けなくなった時にプレス圧を除き、取り付はボルト
（１４）を取り外すことにより樹脂苗種（４）、上型（
２）及び下型（１）は脱型される。この際、加圧空気を
中型（３）の表面に形成された樹脂筒に挿入することに
より樹脂筒は冷却され離脱され易くなる。最後に取り付
はボルト（１２）を外して、上型及び下型の一部（２°
）（１°）及び抑え板（１３）と中型（３）とを分離し
、成形された合成樹脂筒を取り出す。To carry out the method of the present invention, the synthetic resin to be molded is heated and melted within the resin seedling (4) and pressurized with the extrusion die (9), allowing the resin to pass through the resin injection hole (5) into the cavity ( 6) Push out to (7). Air within the cavities (6) and (7) is exhausted from the exhaust hole (10). In this way, the cavities (6) and (7) are filled with resin, and a flanged synthetic resin cylinder is formed. When the air can no longer be handled through the discharge hole (10), the press pressure is removed, and the resin seedling (4) and upper mold (
2) and the lower mold (1) are demolded. At this time, by inserting pressurized air into the resin tube formed on the surface of the middle mold (3), the resin tube is cooled and becomes easier to separate. Finally, for installation, remove the bolts (12) and remove part of the upper and lower molds (2°
) (1°) and the holding plate (13) and the middle mold (3) are separated, and the molded synthetic resin cylinder is taken out.
塩素化ポリエチレン樹脂を１５０℃、８インチロールで
５分間混練してシート化し、これをペレタイザーにより
大きさ３Ｘ ３Ｘ ２ｍｍのペレットにして樹脂苗種（
４）内に投入し１００〜１５０℃に加熱した。十分に流
動性を生じるようになってから、脱気し押し出し型（９
）により圧力を５０〜１５０ｋｇ／ｃｉＧかけることに
より樹脂はキャビティ（６）（７）に流れ込んで充填さ
れた。空気排出孔（１０）から空気が扱けなくなった際
にプレス圧を除いて冷却し、上型（２）、下型（１）を
外し、さらに取り付はボルト（１２）を外して脱型した
。脱型時には製品と中型（３）に加圧空気（５〜ｒｋｇ
／ｃｍＧ）を挿入することにより簡単に脱型できた。こ
のようにして内径５０．５ｍｍ、長さ２５０ｍｍ、厚み
２．５ｍｍ、フランジ外周１００ｍｍのフランジ付の塩
素化ポリエチレン樹脂筒が得られた。Chlorinated polyethylene resin is kneaded at 150°C for 5 minutes with an 8-inch roll to form a sheet, and this is made into pellets with a size of 3 x 3 x 2 mm using a pelletizer to produce resin seedlings (
4) and heated to 100-150°C. After it becomes sufficiently fluid, it is degassed and extruded into an extrusion mold (9
) by applying a pressure of 50 to 150 kg/ciG, the resin flowed into the cavities (6) and (7) and filled them. When the air can no longer be handled from the air exhaust hole (10), remove the press pressure to cool it down, remove the upper mold (2) and lower mold (1), and remove the bolts (12) for installation. did. During demolding, pressurized air (5~rkg) is applied to the product and the middle mold (3).
/cmG), the mold could be easily demolded. In this way, a flanged chlorinated polyethylene resin cylinder having an inner diameter of 50.5 mm, a length of 250 mm, a thickness of 2.5 mm, and a flange outer circumference of 100 mm was obtained.
（発明の効果）
本発明によれば、合成樹脂筒のフランジ部と筒部とを同
時に一体成形できるので接着部分の段差等を生じること
なく品質の一定化を図ることができ、作業性、生産性が
改善される。(Effects of the Invention) According to the present invention, since the flange part and the cylinder part of the synthetic resin cylinder can be integrally molded at the same time, it is possible to achieve uniform quality without creating a level difference in the adhesive part, improving workability and productivity. sex is improved.
図面は本発明金型の実施例を示し、第１図は断面図（第
２図Ｂ−Ｂ’線）、第２図は底面図、第３図は一部切欠
正面図（断面部分は第２図Ａ−Ａ′線）である。
（１）・・・下 型
（２）・・・上 型
（３）・・・中 型
（４）・・・樹脂苗種
（５）・・・樹脂注入孔
（６） （７）・・・キャビティ
（９）・・・押し出し型
（１０）・・・空気排出孔
（１１） （１２） （１４）・・・取り付はボル
ト（１３）・・・抑え板The drawings show an embodiment of the mold according to the present invention, and FIG. 1 is a cross-sectional view (line B-B' in FIG. 2), FIG. 2 is a bottom view, and FIG. (A-A' line in Figure 2). (1)...Lower mold (2)...Top mold (3)...Medium mold (4)...Resin seedlings (5)...Resin injection hole (6) (7)...・Cavity (9)...Extruded type (10)...Air discharge hole (11) (12) (14)...Installation is done with bolts (13)...Suppressing plate
Claims (2)
融樹脂を、樹脂成形用金型の分割型間に形成され相互に
連通してフランジ部及び筒部を成形するキャビティに加
圧流入することにより充填し、冷却固化させることを特
徴とする合成樹脂筒成形方法。(1) When molding a synthetic resin cylinder with a flange, molten resin is pressurized and flows into a cavity formed between the split molds of the resin molding mold and communicating with each other to mold the flange part and the cylinder part. A synthetic resin cylinder molding method characterized by filling the cylinder with a resin and solidifying it by cooling.
を成形するフランジ付の合成樹脂筒成形用金型であって
、互に重合される上型、下型及び中型よりなり、上型及
び下型はそれぞれ一部分離してその分離部分との間に上
記フランジ部を成形するためのキャビティが形成され、
このキャビティに連通して上型及び下型と中型との間に
上記筒部を成形するためのキャビティが形成され、上型
にはその上部に設けられた樹脂留槽より溶融樹脂を各キ
ャビティに圧入する複数の注入孔、下型には各キャビテ
ィより空気を排出する複数の排出孔がそれぞれ設けられ
ていることを特徴とする合成樹脂筒成形用金型。(2) A mold for molding a synthetic resin cylinder with a flange, which forms a cylinder part in the horizontal direction and a flange part in the vertical direction. The mold and the lower mold are each partially separated, and a cavity for molding the flange portion is formed between the separated parts;
A cavity for molding the cylindrical portion is formed between the upper mold, the lower mold, and the middle mold in communication with this cavity, and the upper mold is filled with molten resin from a resin reservoir provided at the top of the mold into each cavity. A mold for molding a synthetic resin cylinder, characterized in that a plurality of injection holes are provided for press-fitting, and a plurality of discharge holes are provided in the lower mold for discharging air from each cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16654888A JPH0216018A (en) | 1988-07-04 | 1988-07-04 | Method of molding synthetic resin cylinder and die therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16654888A JPH0216018A (en) | 1988-07-04 | 1988-07-04 | Method of molding synthetic resin cylinder and die therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0216018A true JPH0216018A (en) | 1990-01-19 |
Family
ID=15833313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16654888A Pending JPH0216018A (en) | 1988-07-04 | 1988-07-04 | Method of molding synthetic resin cylinder and die therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0216018A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7043131B2 (en) | 1999-01-06 | 2006-05-09 | Sumitomo Electric Industries, Ltd. | Optical device and a making method thereof |
| US7580432B2 (en) | 1994-04-01 | 2009-08-25 | Imra America, Inc. | Scanning temporal ultrafast delay methods and apparatuses therefor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56101834A (en) * | 1980-01-04 | 1981-08-14 | Holdt J W Von | Metal mold gate enabling introduction of hard molding compound into molding chamber |
| JPS56166012A (en) * | 1980-05-27 | 1981-12-19 | Nippon Valqua Ind Ltd | Formation of flange part to thermofusing fluoroplastic blank pipe |
| JPS61266213A (en) * | 1985-05-21 | 1986-11-25 | Canon Inc | Manufacture of lense tube unit |
| JPS6318702A (en) * | 1986-07-10 | 1988-01-26 | Nippon Shokubai Kagaku Kogyo Co Ltd | Manufacture of corner waveguide and its metallic die |
-
1988
- 1988-07-04 JP JP16654888A patent/JPH0216018A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56101834A (en) * | 1980-01-04 | 1981-08-14 | Holdt J W Von | Metal mold gate enabling introduction of hard molding compound into molding chamber |
| JPS56166012A (en) * | 1980-05-27 | 1981-12-19 | Nippon Valqua Ind Ltd | Formation of flange part to thermofusing fluoroplastic blank pipe |
| JPS61266213A (en) * | 1985-05-21 | 1986-11-25 | Canon Inc | Manufacture of lense tube unit |
| JPS6318702A (en) * | 1986-07-10 | 1988-01-26 | Nippon Shokubai Kagaku Kogyo Co Ltd | Manufacture of corner waveguide and its metallic die |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7580432B2 (en) | 1994-04-01 | 2009-08-25 | Imra America, Inc. | Scanning temporal ultrafast delay methods and apparatuses therefor |
| US8265105B2 (en) | 1994-04-01 | 2012-09-11 | Imra America, Inc. | Scanning temporal ultrafast delay and methods and apparatuses therefor |
| US8630321B2 (en) | 1994-04-01 | 2014-01-14 | Imra America, Inc. | Scanning temporal ultrafast delay and methods and apparatuses therefor |
| US7043131B2 (en) | 1999-01-06 | 2006-05-09 | Sumitomo Electric Industries, Ltd. | Optical device and a making method thereof |
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