JPS62151318A - Manufacture of double wall pipe - Google Patents

Manufacture of double wall pipe

Info

Publication number
JPS62151318A
JPS62151318A JP29641285A JP29641285A JPS62151318A JP S62151318 A JPS62151318 A JP S62151318A JP 29641285 A JP29641285 A JP 29641285A JP 29641285 A JP29641285 A JP 29641285A JP S62151318 A JPS62151318 A JP S62151318A
Authority
JP
Japan
Prior art keywords
mold
pipe member
movable
tube
parison
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
Application number
JP29641285A
Other languages
Japanese (ja)
Other versions
JPH0431490B2 (en
Inventor
Masato Endo
正人 遠藤
Yukio Takayama
高山　幸夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nihon Plast Co Ltd
Original Assignee
Nihon Plast Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nihon Plast Co Ltd filed Critical Nihon Plast Co Ltd
Priority to JP29641285A priority Critical patent/JPS62151318A/en
Publication of JPS62151318A publication Critical patent/JPS62151318A/en
Publication of JPH0431490B2 publication Critical patent/JPH0431490B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/004—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore making articles by joining parts moulded in separate cavities, said parts being in said separate cavities during said joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
    • B29L2031/601—Multi-tubular articles, i.e. composed of a plurality of tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Duct Arrangements (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To manufacture a duct, which has been divided into two flow paths, continuously and easily, by a method wherein a first pipe member is molded with a first stationary and movable molds, the movable mold is opposed to a second stationary mold by holding the first pipe member as it is and simultaneously with molding of a second pipe member the same is fused to the first pipe member. CONSTITUTION:Mold clamping is performed by introducing a parison in the midway between a first stationary mold 2 and movable mold 8 which have been broken by opposing to each other, air is introduced within the parison by an air pin 13 and a flat ductlike first pipe member 21 is molded within a cavity 9 through blowing. Then the movable mold 8 is moved up to a position opposing to a second stationary mold 3 by holding the pipe member as it is by moving the movable mold 8 backward and a flat ductlike second pipe member 22 is molded again through blowing by introducing the fresh parison in the midway between the second stationary mold 3 and movable mold 8. In this instance, first pipe member 21 is prevented from deforming by supplying air even to the first pipe member 21, and both the pipe members 21, 22 are fused together to form then a unified duct. Therefore, it is unnecessary to unite the two pipe members with each other through post-processing and a molding period of time can be shortened by reducing the man-hour.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、空調用ダクトなどとして用いる二層管の製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a double-layer pipe used as an air conditioning duct or the like.

〔従来の技術〕[Conventional technology]

従来、空調用ダクトとして２個の流路を形成するような
場合、通常、第６図に示すように、２個の管体ａ、ｂを
別々に形成して連結具Ｃで結合している。Conventionally, when two flow paths are formed as an air conditioning duct, two pipe bodies a and b are usually formed separately and connected by a connector C, as shown in Fig. 6. .

（発明が解決しようとする問題点） しかし、このように各管体を別個に形成してこれを結合
すると、製造に工数がかかり、コスト高となる。(Problems to be Solved by the Invention) However, if the tube bodies are formed separately and then joined together in this way, the manufacturing process requires many man-hours and increases the cost.

本発明は、上述のような問題を解決しようとするもので
、二層管を容易かつ確実に形成できるようにすることを
目的とするものである。The present invention aims to solve the above-mentioned problems, and aims to make it possible to easily and reliably form a two-layer pipe.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の二層管の製造方法は、第１の固定金型とこれに
対向するキャビティを有する可動金型とでパリソンを挾
持して第１の管体を中空成形し、この第１の管体を保持
したままの可動金型とこれに対向するキャビティを有す
る第２の固定金型とでパリソンを挾持して第２の管体を
中空成形すると同時に、第１の管体と第２の管体とを融
着させるものである。The method for manufacturing a two-layer pipe of the present invention includes hollow-molding a first pipe body by sandwiching a parison between a first fixed mold and a movable mold having a cavity facing the first fixed mold. The parison is sandwiched between a movable mold holding the body and a second fixed mold having a cavity opposite thereto, and the second tube is hollow-molded, and at the same time, the first tube and the second tube are This is to fuse the tube body.

（作用］ 本発明は、可動金型を第１の固定金型に対した状態で第
１の管体を中空成形し、つづいて、可動金型を第２の固
定金型に対した状態で第２の管体を中空成形し、かつ、
第１の管体と第２の管体とを融着して一体化するもので
ある。(Function) According to the present invention, a first tube body is hollow-molded with a movable mold placed against a first fixed mold, and then a first tube body is hollow-molded with a movable mold placed against a second fixed mold. hollow-molding the second tube, and
The first tube body and the second tube body are fused and integrated.

〔実施例〕〔Example〕

以下、本発明の一実施例を図面を参照して説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

第１図において、１は金型取付板で、この金型取付板１
に第１の固定金型２と第２の固定金型３とが隣接して取
付けられている。この第１の固定金型２の型面は平坦面
となっているとともに、第２の固定金型３の型面には平
型ダクト形状のキャビティ４が形成されている。In Fig. 1, 1 is a mold mounting plate, and this mold mounting plate 1
A first stationary mold 2 and a second stationary mold 3 are attached adjacent to each other. The first fixed mold 2 has a flat mold surface, and the second fixed mold 3 has a flat duct-shaped cavity 4 formed in the mold surface.

５は上記金型取付板１に対向配置された可動板で、この
可動板５は作動杆６によって金型取付板１に対して往復
動する。また、可動板５にはガイド板７が取付けられ、
このガイド板７に蟻溝係合を介して可動金型８が横方向
移動自在に嵌合され、この可動金型８の型面には平型ダ
クト形状のキャビティ９が形成されている。Reference numeral 5 denotes a movable plate disposed opposite to the mold mounting plate 1, and this movable plate 5 is reciprocated with respect to the mold mounting plate 1 by means of an operating rod 6. Further, a guide plate 7 is attached to the movable plate 5,
A movable mold 8 is fitted into the guide plate 7 through dovetail engagement so as to be movable laterally, and a flat duct-shaped cavity 9 is formed in the mold surface of the movable mold 8.

また、上記第２の固定金型３および可動金型８にエアビ
ン作動筒１０．１１が設けられ、このエアビン作動筒１
０．１１により各キャビティ４．９に対してエアビン１
２．１３を進退作動するようになっている。Further, the second fixed mold 3 and the movable mold 8 are provided with an air bin operating cylinder 10.11.
Airbin 1 for each cavity 4.9 by 0.11
2.13 is designed to move forward and backward.

そうして、第１図および第２図に示すように、まず、第
１の固定金型２と可動金型８とで第１の管体２１を成形
する。すなわち、作動杆６により可動板５を後退させ、
互いに対向して型開きした第１の固定金型２と可動金型
８との中間にマンドレル１４からパリソンを導入し、作
動杆６により可動板５を前進させ、ガイド板７を介して
可動金型８を第１の固定金型２に接合させて型閉じを行
ない、パリソンを挾持するとともに、エアビン１３によ
りパリソン内に空気を送入し、キャビティ９内に平型ダ
クト状の第１の管体２１を中空成形する。Then, as shown in FIGS. 1 and 2, first, the first tube body 21 is molded using the first fixed mold 2 and the movable mold 8. That is, the movable plate 5 is moved backward by the operating rod 6,
A parison is introduced from the mandrel 14 between the first fixed mold 2 and the movable mold 8 which are opened facing each other, and the movable plate 5 is advanced by the operating rod 6, and the movable mold is inserted through the guide plate 7. The mold 8 is joined to the first fixed mold 2 and the mold is closed, and the parison is clamped, and air is introduced into the parison by the air bin 13 to form a flat duct-shaped first pipe in the cavity 9. The body 21 is hollow-molded.

ついで、可動金型８を後退させて型開きを行ない、蟻溝
係合を介して可動金型８を第１の管体２１を保持したま
ま第２の固定金型３に対向する位置まで移動させ、マン
ドレル１４を金型の真上位置に変位させ、新たなパリソ
ンを第２の固定金型３と可動金型８との中間に導入して
再び型閉じを行ない、パリソンを挾持するとともに、エ
アビン１２によりパリソン内に空気を送入し、第３図お
よび第４図のように、キャビティ４内に平型ダクト状の
第２の管体２２を中空成形する。このとき、第１の管体
２１にも空気を供給して第１の管体２１が変形すること
がないようにするとともに、第１の管体２１と第２の管
体２２とを融着させ、第５図に示すような、第１＃よび
第２の管体２１．２２が一体化したダクトを形成する。Next, the movable mold 8 is moved backward to open the mold, and the movable mold 8 is moved to a position facing the second fixed mold 3 while holding the first tube body 21 through the dovetail engagement. The mandrel 14 is moved to a position directly above the mold, a new parison is introduced between the second fixed mold 3 and the movable mold 8, the mold is closed again, and the parison is clamped. Air is introduced into the parison by the air bin 12, and a flat duct-shaped second tube 22 is hollow-molded in the cavity 4, as shown in FIGS. 3 and 4. At this time, air is also supplied to the first tube 21 to prevent the first tube 21 from deforming, and the first tube 21 and the second tube 22 are fused together. This forms a duct in which the first pipe body 21 and the second pipe body 21 and 22 are integrated as shown in FIG.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、第１の固定金型と可動金型とで第１の
管体を成形し、この第１の管体を保持したまま可動金型
を第２の固定金型に対向させ、第２の管体を成形すると
同時に第１の管体に融着させるので、２つの流路を仕切
ったダクト等を連続して製造でき、後加工によって２つ
の管体を結合する必要がなく、工数を削減して成形時間
の短縮化を計ることができ、寸法的にも精度の高いもの
とすることができ、また、第１および第２の固定金型を
移動させる必要がなく、機構も簡素化することができる
。According to the present invention, a first tube is formed using a first fixed mold and a movable mold, and the movable mold is opposed to the second fixed mold while holding the first tube. Since the second tube is molded and fused to the first tube at the same time, ducts etc. that partition two flow paths can be manufactured continuously, and there is no need to join the two tubes through post-processing. , it is possible to shorten the molding time by reducing the number of man-hours, it is possible to achieve high dimensional accuracy, and there is no need to move the first and second fixed molds, and the mechanism is can also be simplified.

【図面の簡単な説明】[Brief explanation of drawings]

第１図ないし第５図は本発明の一実施例を示すもので、
第１図は第１工程を示す横断面図、第２図は第１図のＩ
［−ＩＩ部の断面図、第３図は第２工程を示す横断面図
、第４図は第３図のＩＶ　−ＩＶ部の断面図、第５図は
本発明による二層管の斜視図、第６図は従来の二層管の
斜視図である。 ２・・第１の固定金型、３・・第２の固定金型、４・・
キャビティ、８・・可動金型、９・・キヤとティ、２１
・・第１の管体、２２・・第２の管体。 ＄３図 楽４画1 to 5 show an embodiment of the present invention,
Figure 1 is a cross-sectional view showing the first step, Figure 2 is I of Figure 1.
[A sectional view of the -II section, FIG. 3 is a cross-sectional view showing the second step, FIG. 4 is a sectional view of the IV-IV section of FIG. 3, and FIG. 5 is a perspective view of the double-layer pipe according to the present invention. , FIG. 6 is a perspective view of a conventional two-layer pipe. 2..First fixed mold, 3..Second fixed mold, 4..
Cavity, 8...Movable mold, 9...Kya and tee, 21
...first tube body, 22...second tube body. $3 Zurakaku 4 strokes

Claims (1)

【特許請求の範囲】[Claims] （１）第１の固定金型とこれに対向するキャビティを有
する可動金型とでパリソンを挾持して第１の管体を中空
成形し、 この第１の管体を保持したままの可動金型とこれに対向
するキャビティを有する第２の固定金型とでパリソンを
挾持して第２の管体を中空成形すると同時に、第１の管
体と第２の管体とを融着させることを特徴とする二層管
の製造方法。(1) A parison is sandwiched between a first fixed mold and a movable mold having an opposing cavity, and a first tube is hollow-molded, and the movable mold holds the first tube. The parison is sandwiched between a mold and a second fixed mold having a cavity facing the mold, and a second tube is hollow-molded, and at the same time, the first tube and the second tube are fused together. A method for manufacturing a double-layer pipe characterized by:
JP29641285A 1985-12-25 1985-12-25 Manufacture of double wall pipe Granted JPS62151318A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29641285A JPS62151318A (en) 1985-12-25 1985-12-25 Manufacture of double wall pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29641285A JPS62151318A (en) 1985-12-25 1985-12-25 Manufacture of double wall pipe

Publications (2)

Publication Number Publication Date
JPS62151318A true JPS62151318A (en) 1987-07-06
JPH0431490B2 JPH0431490B2 (en) 1992-05-26

Family

ID=17833209

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29641285A Granted JPS62151318A (en) 1985-12-25 1985-12-25 Manufacture of double wall pipe

Country Status (1)

Country Link
JP (1) JPS62151318A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02121823A (en) * 1988-10-31 1990-05-09 Kyoraku Co Ltd Manufacture of hollow multi-wall panel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02121823A (en) * 1988-10-31 1990-05-09 Kyoraku Co Ltd Manufacture of hollow multi-wall panel

Also Published As

Publication number Publication date
JPH0431490B2 (en) 1992-05-26

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