JPH0655574A - Method and apparatus for manufacturing multi-layer molded tube - Google Patents
Method and apparatus for manufacturing multi-layer molded tubeInfo
- Publication number
- JPH0655574A JPH0655574A JP23161092A JP23161092A JPH0655574A JP H0655574 A JPH0655574 A JP H0655574A JP 23161092 A JP23161092 A JP 23161092A JP 23161092 A JP23161092 A JP 23161092A JP H0655574 A JPH0655574 A JP H0655574A
- Authority
- JP
- Japan
- Prior art keywords
- tubular body
- mold
- peripheral surface
- slide
- movable
- 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.)
- Granted
Links
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、合成樹脂材による複層
成形管の製造方法及びその装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a multi-layer molded pipe made of a synthetic resin material.
【０００２】[0002]
【従来の技術】従来は、２本の成形管を強制的に挿入し
て圧着する方法で製造するものであったため、製造中の
破損が多く、生産性も上がらなかった。合成樹脂によっ
て二層以上に成る成形管を成形金型によって製造するこ
とは困難であった。2. Description of the Related Art Conventionally, since two molding pipes were forcibly inserted and crimped, many breakages occurred during the production and the productivity could not be improved. It has been difficult to manufacture a molded tube having two or more layers with a synthetic resin using a molding die.
【０００３】[0003]
【発明が解決しようとする課題】そこで、本発明は従来
製造が困難であった複層成形管の製造を容易かつ確実に
行うことができる画期的な製造法を提供することを目的
とするものである。SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an epoch-making manufacturing method capable of easily and reliably manufacturing a multi-layer molded tube which has been difficult to manufacture in the past. It is a thing.
【０００４】[0004]
【課題を解決するための手段】本発明は、成形した一次
管体を、次工程の下金型の所定位置に載置し、この管体
内部に左右両側方から可動金型を挿入移動し、この両可
動金型の先端部に周設したスライドコアの各先端面が管
体の内周面と間隙を保った位置で接し合った時スライド
コアの全外径を縮小状態に置き、さらに両可動金型を管
体内を移動しその先端面が接し合った時スライドコアの
全外径が拡大状態になり、各スライドコアの外周面が前
記管体の内周面に圧接して管体を内部から支持し、しか
る後に上金型をセットして合成樹脂材を注入し、前記一
次管体の全外周部に一体に成形して成る製造方法であ
る。According to the present invention, a molded primary pipe is placed at a predetermined position of a lower mold of the next step, and a movable mold is inserted and moved from the left and right sides inside the pipe. , When the front end surfaces of the slide cores provided around the front end portions of the two movable molds are in contact with the inner peripheral surface of the tubular body at a position with a gap maintained, the entire outer diameter of the slide core is reduced, and When both movable molds are moved in the tube and their tip surfaces are in contact with each other, the entire outer diameter of the slide core is in an expanded state, and the outer peripheral surface of each slide core is pressed against the inner peripheral surface of the tube body. Is supported from the inside, after which an upper mold is set, a synthetic resin material is injected, and the whole outer peripheral portion of the primary tubular body is integrally molded.
【０００５】[0005]
【作用】まず１回目の型閉め成形を行って所定口径の管
材を製造する。（図１）First, the first mold closing molding is performed to manufacture a pipe material having a predetermined diameter. (Fig. 1)
【０００６】成形後、型開きを行い成形した管材を取り
出す。（図２）After molding, the mold is opened and the molded pipe material is taken out. (Fig. 2)
【０００７】取り出した管材のゲート部その他のバリを
削去処理して所定の管体を用意する。（図３）The gate portion and other burrs of the taken out pipe material are removed to prepare a predetermined pipe body. (Figure 3)
【０００８】この管体を、次の成形機の下金型の凹部に
下側に間隙を保って載置する。（図４）This tubular body is placed in the concave portion of the lower mold of the next molding machine with a lower clearance. (Figure 4)
【０００９】このように載置した管体の左右両側方か
ら、可動金型を油圧シリンダーによって管体の内部方向
に挿入移動する。すると、両可動金型の先端部に周設し
ている形状の異なる２種類のスライドコアの各先端面
が、管体の内周面と間隙を保った位置で接し合うが、左
右の可動金型の先端部の端面間はまだ間隔を保ってい
る。即ち、この状態では、スライドコアの全外径はまだ
小さくなって管材内に挿入している。（図５，図７）The movable mold is inserted and moved inward from the left and right sides of the pipe body thus mounted by the hydraulic cylinder. Then, the tip surfaces of the two types of slide cores, which have different shapes and are provided around the tip portions of both movable molds, come into contact with the inner peripheral surface of the tubular body at a position with a gap, There is still a gap between the end faces of the mold tip. That is, in this state, the entire outer diameter of the slide core is still small and the slide core is inserted into the pipe material. (Figs. 5 and 7)
【００１０】そこで、油圧シリンダーをさらに作動して
両可動金型を管体の内方に移動しその先端面を接し合っ
て停止する。すると、可動金型の先端部の内方移動によ
って、その周面上の各スライドコアが、両部材のテーパ
面におけるくさび状の摩擦運動を起して押し上げられる
から、各スライドコアの外面部が管体の内周面に押し当
たるようになる。即ち、この状態においては、スライド
コアの全外径は最大に拡張して管材内に挿入している。
（図６，図８）Therefore, the hydraulic cylinder is further operated to move both movable molds inward of the pipe body and stop by contacting the tip surfaces thereof. Then, due to the inward movement of the tip of the movable mold, each slide core on its peripheral surface is pushed up by causing a wedge-shaped frictional motion in the tapered surfaces of both members, so that the outer surface of each slide core is It will come into contact with the inner peripheral surface of the tube. That is, in this state, the entire outer diameter of the slide core is expanded to the maximum and inserted into the pipe material.
(Figs. 6 and 8)
【００１１】このように管体の内部を支持した後、上金
型を管体の上側に間隙を保ってセットした後、射出機を
稼動して合成樹脂材を射出注入口から前記金型内の管体
周囲の間隙部に注入する。この注入中は、管体はその内
部において、可動金型の先端部及び各スライドコアによ
って保持されている。（図９）After supporting the inside of the tubular body in this way, the upper die is set on the upper side of the tubular body with a gap maintained, and then the injection machine is operated to introduce the synthetic resin material from the injection inlet into the die. It is injected into the gap around the tube body. During this injection, the tubular body is held inside by the tip portion of the movable mold and each slide core. (Figure 9)
【００１２】所定時間経過後は、金型を開いて二次成形
品を取出せばよい。After a lapse of a predetermined time, the mold may be opened and the secondary molded product may be taken out.
【００１３】[0013]
【実施例】本件発明の製造法においては、一次成形機と
二次成形機とによる２つの成形工程がある。EXAMPLE In the manufacturing method of the present invention, there are two molding steps using a primary molding machine and a secondary molding machine.
【００１４】Ａ．一次成形工程についてA. About the primary molding process
【００１５】１は上金型で、この中央部内側には支持溝
２を構成し、この支持溝には射出注入口３が臨設する。
この上金型１の左右両側部には、アンギラピン４，４を
設ける。Reference numeral 1 is an upper mold, and a support groove 2 is formed inside the central portion, and an injection inlet 3 is provided in the support groove.
Anguilla pins 4 and 4 are provided on both left and right sides of the upper mold 1.
【００１６】５は下金型で、この中央部内側には前記上
金型１の支持溝２に対向する支持溝６を構成する。Reference numeral 5 denotes a lower mold, and a support groove 6 facing the support groove 2 of the upper mold 1 is formed inside the central portion.
【００１７】７，７は前記下金型５の左右両側部に設置
した可動金型で、この可動金型は油圧シリンダーによっ
て作動し、可動金型の先端部８，８の端面間が接離する
ようになる。可動金型の後側部には、前記アンギラピン
４，４の挿入孔９，９を設けている。Reference numerals 7 and 7 denote movable dies installed on both left and right sides of the lower die 5. The movable dies are operated by hydraulic cylinders, and the end faces of the movable dies 8 and 8 are brought into contact with and separated from each other. Come to do. On the rear side of the movable mold, insertion holes 9, 9 for the anguilla pins 4, 4 are provided.
【００１８】Ｂ．二次成形工程についてB. Secondary molding process
【００１９】10は上金型で、この中央部内側には凹部11
を構成し、この凹部には射出注入口12を臨設する。Reference numeral 10 is an upper die, and a concave portion 11 is provided inside the central portion.
The injection injection port 12 is provided in this recess.
【００２０】13は下金型で、この中央部内側には前記上
金型10の凹部11に対向する凹部14を構成する。Reference numeral 13 is a lower mold, and a concave portion 14 is formed inside the central portion of the lower mold so as to face the concave portion 11 of the upper mold 10.
【００２１】15,15 は前記下金型13の左右両側部に設置
した可動金型で、この可動金型は油圧シリンダーによっ
て作動する。Reference numerals 15 and 15 denote movable dies installed on both left and right sides of the lower die 13, and the movable dies are operated by hydraulic cylinders.
【００２２】前記可動金型15,15 の先端部16,16 の端面
間は接離するようになり、また両可動金型15,15 の先端
部16,16 の周面部は端面にかけて下り傾斜のテーパ面に
成る。The end faces of the tip parts 16, 16 of the movable molds 15, 15 come into contact with and separate from each other, and the peripheral surface parts of the tip parts 16, 16 of both the movable molds 15, 15 are inclined downward to the end faces. It becomes a tapered surface.
【００２３】前記両可動金型の先端部16,16 の周面部の
上下左右の四個所には、周面部のテーパ面を摩擦摺動す
るテーパ面をそれぞれ有する形状と大きさの異なる２種
類のスライドコア17・・・18・・・を交互に設置している。Two types of different shapes and sizes, each having a tapered surface that frictionally slides on the tapered surface of the peripheral surface portion, are provided at four locations on the upper, lower, left, and right sides of the peripheral surface portion of the tip portions 16, 16 of both movable molds. Slide cores 17 ... 18 ... are installed alternately.
【００２４】ａは一次成形管体、ｂは二次成形管体であ
る。Reference numeral a is a primary molded tube, and b is a secondary molded tube.
【００２５】19は一次成形品ａを二次工程の成形機にセ
ットしたときにできる間隙を示す。Reference numeral 19 represents a gap formed when the primary molded product a is set in the molding machine of the secondary process.
【００２６】[0026]
【発明の効果】本発明の製造方法は、２層以上の複層体
に成る管体を金型成形によって製造するものであり、従
来強制的に挿入圧接する方法しかできなかった管体の複
層成形が可能となったから、良質の均一製品を量産する
ことができるようになり、製造コストも低下し生産性を
上げることができる。According to the manufacturing method of the present invention, a tube body having a multi-layered body of two or more layers is manufactured by die molding, and the conventional method of compulsory insertion and pressure welding can only be applied to the tube body. Since the layer forming becomes possible, it becomes possible to mass-produce a high-quality uniform product, which reduces the manufacturing cost and improves the productivity.
【図１】一次成形工程の要部の成形中の正断面図FIG. 1 is a front sectional view of a main part of a primary molding process during molding.
【図２】一次成形工程の要部の成形後の正断面図FIG. 2 is a front cross-sectional view of a main part of a primary molding process after molding.
【図３】一次成形品の斜視図FIG. 3 is a perspective view of a primary molded product.
【図４】二次成形工程の成形前の正断面図FIG. 4 is a front sectional view before molding in a secondary molding process.
【図５】二次成形工程のセット中の正断面図FIG. 5 is a front cross-sectional view during the set of the secondary molding process.
【図６】二次成形工程の成形直前の正断面図FIG. 6 is a front cross-sectional view immediately before molding in the secondary molding process.
【図７】図５のＡ−Ａ線断面図7 is a cross-sectional view taken along the line AA of FIG.
【図８】図６のＢ−Ｂ線断面図FIG. 8 is a sectional view taken along line BB of FIG.
【図９】図６の成形直後の正断面図9 is a front sectional view immediately after molding of FIG.
【図10】二次成形品の斜視図[Figure 10] Perspective view of the secondary molded product
10 上金型 13 下金型 15 可動金型 16 可動金型の先端部 17 スライドコア 18 スライドコア ａ 一次成形管体 ｂ 二次成形管体 10 Upper mold 13 Lower mold 15 Movable mold 16 Tip of movable mold 17 Slide core 18 Slide core a Primary molding tube b Secondary molding tube
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 23:00 4Ｆ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location B29L 23:00 4F
Claims (2)
した一次管体を、次工程の下金型の所定位置に載置し、
この管体の左右両側方から可動金型を管体内部に挿入移
動し、この両可動金型の先端部に周設したスライドコア
の各先端面が管体の内周面と間隙を保った位置で接し合
った時スライドコアの全外径を縮小状態に置き、さらに
両可動金型の先端部を管体内に移動し、その先端面が接
し合った時スライドコアの全外径が拡大状態になり、各
スライドコアの外側面が管体の内周面に圧接して管体を
内部から支持し、しかる後に上金型をセットして合成樹
脂材を注入し、前記一次管体の全外周部に一体に成形し
て成ることを特徴とする複層成形管の製造方法。1. A primary tube body, which has been molded into a predetermined shape and size and has had burrs and the like removed, is placed at a predetermined position in the lower mold of the next step,
The movable molds were inserted and moved from the left and right sides of the pipe body into the pipe body, and the tip surfaces of the slide cores provided around the tip portions of the movable molds maintained a gap with the inner peripheral surface of the pipe body. When the slide cores are in contact with each other at the position, the entire outer diameter of the slide core is reduced, and the tips of both movable molds are moved to the inside of the tube. When the tips are in contact with each other, the overall outer diameter of the slide core is expanded. The outer surface of each slide core is pressed against the inner peripheral surface of the tubular body to support the tubular body from the inside.After that, the upper die is set and the synthetic resin material is injected, and the whole of the primary tubular body is A method for producing a multi-layer molded tube, characterized by being integrally molded on an outer peripheral portion.
の下りテーパ面に成る先端部周面に、形状と大きさの異
なる２種類のスライドコアを交互に設置し、このスライ
ドコアの外周面は円弧状に形成して成る複層成形管の製
造装置。2. Two kinds of slide cores having different shapes and sizes are alternately installed on the peripheral surface of the front end portion, which is a downward taper surface of the movable mold located on both left and right sides of the lower mold, and the slide cores are alternately arranged. A multi-layer molded pipe manufacturing device in which the outer peripheral surface of the is formed in an arc shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23161092A JPH0759374B2 (en) | 1992-08-07 | 1992-08-07 | Method and apparatus for manufacturing multi-layer formed pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23161092A JPH0759374B2 (en) | 1992-08-07 | 1992-08-07 | Method and apparatus for manufacturing multi-layer formed pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0655574A true JPH0655574A (en) | 1994-03-01 |
| JPH0759374B2 JPH0759374B2 (en) | 1995-06-28 |
Family
ID=16926214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23161092A Expired - Fee Related JPH0759374B2 (en) | 1992-08-07 | 1992-08-07 | Method and apparatus for manufacturing multi-layer formed pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0759374B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002292681A (en) * | 2001-03-30 | 2002-10-09 | Asahi Glass Co Ltd | Method for manufacturing panel material for window with frame member |
| JP2008230004A (en) * | 2007-03-20 | 2008-10-02 | Fujifilm Corp | Lens molding mold and plastic lens |
| JP2009066799A (en) * | 2007-09-11 | 2009-04-02 | Kyowa Seikei Kk | Method of manufacturing flexible tubular member and mold for molding the member |
| JP2009090502A (en) * | 2007-10-05 | 2009-04-30 | Yamashiro Seiki Seisakusho:Kk | Positioning mechanism of insert core |
| KR101397536B1 (en) * | 2012-10-25 | 2014-05-20 | 이중재 | Injection mold for forming hollow product |
| CN107160604A (en) * | 2017-07-15 | 2017-09-15 | 广东亿达汽车密封件有限公司 | Silica gel pipe orifice is from torn edges mould |
| KR102212746B1 (en) * | 2020-04-09 | 2021-02-05 | 주식회사 케이와이우레탄 | Apparatus for manufacturing tubular polyurethane foam insulator and tubular polyurethane foam insulator using thereof |
-
1992
- 1992-08-07 JP JP23161092A patent/JPH0759374B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002292681A (en) * | 2001-03-30 | 2002-10-09 | Asahi Glass Co Ltd | Method for manufacturing panel material for window with frame member |
| JP4649759B2 (en) * | 2001-03-30 | 2011-03-16 | 旭硝子株式会社 | Method for manufacturing window plate with frame material |
| JP2008230004A (en) * | 2007-03-20 | 2008-10-02 | Fujifilm Corp | Lens molding mold and plastic lens |
| JP2009066799A (en) * | 2007-09-11 | 2009-04-02 | Kyowa Seikei Kk | Method of manufacturing flexible tubular member and mold for molding the member |
| JP2009090502A (en) * | 2007-10-05 | 2009-04-30 | Yamashiro Seiki Seisakusho:Kk | Positioning mechanism of insert core |
| KR101397536B1 (en) * | 2012-10-25 | 2014-05-20 | 이중재 | Injection mold for forming hollow product |
| CN107160604A (en) * | 2017-07-15 | 2017-09-15 | 广东亿达汽车密封件有限公司 | Silica gel pipe orifice is from torn edges mould |
| KR102212746B1 (en) * | 2020-04-09 | 2021-02-05 | 주식회사 케이와이우레탄 | Apparatus for manufacturing tubular polyurethane foam insulator and tubular polyurethane foam insulator using thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0759374B2 (en) | 1995-06-28 |
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