JPH0767730B2 - The hollow molded article manufacturing apparatus - Google Patents

The hollow molded article manufacturing apparatus

Info

Publication number
JPH0767730B2
JPH0767730B2 JP3133790A JP13379091A JPH0767730B2 JP H0767730 B2 JPH0767730 B2 JP H0767730B2 JP 3133790 A JP3133790 A JP 3133790A JP 13379091 A JP13379091 A JP 13379091A JP H0767730 B2 JPH0767730 B2 JP H0767730B2
Authority
JP
Japan
Prior art keywords
supply
means
shut
material
valve
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
Application number
JP3133790A
Other languages
Japanese (ja)
Other versions
JPH05245912A (en
Inventor
達彌 中川
恭夫 江崎
Original Assignee
エクセル株式会社
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 エクセル株式会社 filed Critical エクセル株式会社
Priority to JP3133790A priority Critical patent/JPH0767730B2/en
Publication of JPH05245912A publication Critical patent/JPH05245912A/en
Publication of JPH0767730B2 publication Critical patent/JPH0767730B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0073Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor characterised by the parison configuration, e.g. nestable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0017Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/269Extrusion in non-steady condition, e.g. start-up or shut-down
    • B29C48/2692Material change
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/32Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/337Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
    • B29C48/338Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location using a die with concentric parts, e.g. rings, cylinders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04Extrusion blow-moulding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00Tubular articles
    • B29L2023/004Bent tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/703Bellows

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は、複数の異なった材質部分から成る中空成形品の製造装置に関するものである。 The present invention relates to relates to a hollow molded article manufacturing apparatus comprising a plurality of different material portions.

【0002】 [0002]

【従来の技術】従来、図1に示す如く、本体部分1は剛性に富んだ内、外層1a,1cの間に例えば断熱性に優れた発泡材1bを挟んだ3層構造に形成され、ネジ山等の閉栓手段を一体に形成する為に特に剛性を必要とする口部2は剛性に富んだ単一材質から成る容器C等を製造する場合、口部2だけを別個に成形し本体1に二次的に固着するのが通常である。 Conventionally, as shown in FIG. 1, the body portion 1 is among rich rigid, the outer layer 1a, is formed in the three-layer structure sandwiching the foam 1b for example having excellent thermal insulation between 1c, screw If mouth 2 which require particularly rigid to form the plugging means mountains such as integrally to produce a container C or the like comprising a single material rich in rigidity, body 1 separately formed only mouth 2 it is usual to fix secondary to the. 然るに、二次的に固着する方法は製造工数をより多く費やすだけでなく、必要な固着強度を確保することが要求される。 However, a method of fixing secondarily not only spend more manufacturing steps are required to ensure the bonding strength required.

【0003】又、特に材料費が相対的に高価である樹脂成形品の製造に於いては、成形工程で発生するロス部分の再利用は重要な課題であるが、図1に示した様な3層構造品の成形に於いて発生するロスには多種類の材料が混在しその再利用が容易でない。 [0003] Also, at the particular production of the resin molded product material cost is relatively expensive, but the reuse of loss portion for generating the molding process is an important issue, such as shown in FIG. 1 the loss occurring at the molding of three-layer structure products many types of materials is not easy to its reuse mixed.

【0004】 [0004]

【発明が解決しようとする課題】本発明は以上の点に鑑みてなされたものであって、中空成形品の各部を用途に応じた材質構成で一体に容易に成形でき且つ発生するロス材料の再利用にも好適な複合材質を備えた中空成形品の製造装置を提供することを目的とする。 Was made in view of the THE INVENTION It is an object object of the present invention to provide a more points, a material structure according to each part of the hollow molded articles for applications easily molded can and loss material generating integrally and to provide a hollow molded article manufacturing apparatus equipped with a suitable composite material to reuse.

【0005】 [0005]

【実施例】以下、本発明の構成について、具体的に実施例に基づき説明する。 EXAMPLES Hereinafter, the configuration of the present invention will be described with reference to specific examples. まず、本発明方法が実施される製造装置の1実施例について、図2の模式図に基づき説明する。 First, an embodiment of a manufacturing apparatus to which the present invention process is carried out will be described with reference to the schematic diagram of FIG. 2. 尚、本例の製造装置は、図3(a)図に示す如く蛇腹部P を例えば低密度ポリエチレン(LD−PE) The production apparatus of this example, FIGS. 3 (a) the bellows portion P 2 as shown in FIG example low density polyethylene (LD-PE)
等の軟質材料で形成し、他部分P 10'11を高密度ポリエチレン(HD−PE)等の硬質材料で形成して蛇腹部の伸縮性を向上させたパイプPとか、図3(b)に示す如く嵌合部J を軟質材料で形成し他部分J を硬質材料で形成して嵌合性を改良した継手J、又は図3 Formed of a soft material such, Toka pipe P with improved stretchability of the bellows portion to form other parts P 10 'P 11 of a hard material such as high density polyethylene (HD-PE), FIG. 3 (b) joint J that as the engaging portion J 2 and the other portion J 1 is formed of a soft material to improve the compatibility fitting formed of a hard material shown in, or 3
(c)に示す如く曲げ部V を軟質材料で接合部V を硬質材料で夫々形成し使用箇所への対応性を良くしたエルボV等の如く、2種類の材質構成を有する中空製品を製造することを目的とした装置である。 As shown in (c) a bending portion V 2 as elbows V such that the junction V 1 was good correspondence to the respective formed using portions of a hard material a soft material, a hollow product with a two material construction it is a device intended to be produced.

【0006】図2に於いて、夫々の内部に形成された流路3a,4aにスクリュー5が夫々配設されて成る2機の第1,第2パリソン押出機3、4が設けられており、 [0006] In FIG. 2, formed inside the flow path 3a of the respective first two aircraft the screw 5 is formed by respectively disposed 4a, and a second parison extruder 3 and 4 is provided ,
その各先端は共通のノズル6に連結されている。 Each of its front end is connected to a common nozzle 6. 従って、各ホッパ(不図示)から供給された熱可塑性樹脂材料は、加熱溶融されつつスクリュー5の回転と共にノズル6に向けて各流路内を流動せしめられる。 Thus, each hopper thermoplastic resin material supplied from the (not shown) is caused to flow to the flow path toward the nozzle 6 with the rotation of the screw 5 while being heated and melted. このノズル6は、送られてくる樹脂材料を鉛直下方に注出すべく配設されている。 The nozzle 6 is arranged to produce Note the sent come resin material vertically downward. ノズル6の略中央部には、下端が先細状に形成されたマンドレル6aが鉛直に配置されており、 A substantially central portion of the nozzle 6, the mandrel 6a that the lower end is formed in a tapered shape are arranged vertically,
この中心部には、コンプレッサ6a 等の加圧気体供給源に接続された通風孔6a が穿設されている。 This central portion, ventilation holes 6a 1 is drilled which is connected to a pressurized gas supply source, such as a compressor 6a 2. このマンドレル6aの周囲には、第1流路7がマンドレル6a Around the mandrel 6a, first passage 7 mandrel 6a
の軸方向に沿って形成されている。 It is formed along the axial direction. そして、更に第1流路7の外側には内管部材6bにより第1流路7から仕切られた第2流路8が形成されていて、第2流路8はその通流方向がマンドレル6aの軸方向に沿う様に外管部材6cによりその通流域が形成されている。 Then, even on the outside of the first flow path 7 is formed a second flow path 8 which are partitioned from the first flow path 7 by the inner pipe member 6b, the second flow path 8 is its flow direction mandrel 6a its passing basin is formed by the outer tube member 6c as along the axial direction. 第1流路7及び第2流路8の夫々の下端部はノズル6の下端面近傍で合流し、パリソンの注出口6dを形成している。 The lower end of each of the first passage 7 and the second passage 8 merges with the lower end face near the nozzle 6 and forms a spout 6d of the parison. 一方、 on the other hand,
第1、第2各流路7,8の上方部分はノズル6の側面方向に屈曲され、第1流路7は第1押出機3の流路3a First, upper portion of the second each passage 7, 8 are bent laterally of the nozzle 6, the first passage 7 flow path 3a of the first extruder 3
と、第2流路8は第2押出機4の流路4aと、夫々連通されている。 When, the second flow path 8 and the flow passage 4a of the second extruder 4, are communicated respectively communicated. 尚、ノズル6の直下域には注出されたパリソンを収容すると共にブロー成形を実施する金型セット(不図示)が配設されている。 Incidentally, the mold set (not shown) is arranged to carry out blow molding with the immediately below the nozzle 6 for accommodating the parison dispensed.

【0007】而して、例えば本例の如く各押出機3,4 [0007] In Thus, for example, as in the present example the extruder 3,4
とノズル6との連絡部には、各流路3a,4aを適宜遮断可能なシャットオフバルブ9,10が介設されている。 And the contact portion of the nozzle 6, each channel 3a, appropriately blockable shutoff valves 9 and 10 is interposed a 4a. シャットオフバルブ9,10は、夫々制御手段11 Shut-off valves 9 and 10, respectively control means 11
に接続されており、制御手段11の指示に応じて各流路3a,4aを開閉する。 It is connected to open and close the flow paths 3a, the 4a in response to an instruction of the control unit 11. 従って、制御手段11として例えばマイクロコンピュータ等を用い成形すべき製品の材質構成に応じた適切な動作パターンをプログラムとして記憶させておき、これに沿って各シャットオフバルブを開閉すれば、所望の材料構成でパリソンが注出形成される。 Accordingly, the control unit 11 and to keep it for example to store the proper operation pattern according to the material composition of the product to be molded using a microcomputer or the like as a program, if opening and closing the respective shutoff valves along which desired material parison in the configuration is formed pouring. 尚、この場合、各シャットオフバルブ9,10と各押出機3,4の動作を適宜連動させて各流路3a,4a In this case, the shut-off valves 9, 10 and appropriately interlocked allowed by each flow path 3a the operation of each extruder 3, 4, 4a
内の圧力を異常に上昇させない様にすることが必要である。 It is necessary to make the pressure of the inner so as not abnormally increased. 又、注出されるパリソンの長さをノズル6の直下域近傍に配置した光源LSからの光ビームを光電管等の検知手段PDで捕え、制御手段11がこの検知手段から送られてくる信号に応じてシャットオフバルブ9,10の動作を制御する構成としても良い。 Further, the light beam of the length of the parison dispensed from the light source LS disposed immediately below the vicinity of the nozzle 6 captured by the detection means PD for photoelectric tube or the like, according to a signal control unit 11 is transmitted from the sensing means it may be configured to control the operation of the shut-off valve 9, 10 Te.

【0008】次に、本発明方法の1実施例について、上述した製造装置の動作に基づき説明する。 [0008] Next, an embodiment of the present invention a method is described based on the operation of the above-described manufacturing device. ところで、図3(a)に示した蛇腹部P を有するパイプPを製造する場合は、原材料として前述した如く蛇腹部P 用の軟質性樹脂として例えばLD−PEを、他部分P 10' Incidentally, FIGS. 3 (a) when producing the pipe P having a bellows portion P 2 shown in, for example, LD-PE as the soft resin for the bellows portion P 2 as mentioned above as a raw material, the other parts P 10 ' P
11用の硬質性樹脂としては例えばHD−PEを使用すれば良いが、他の例えば硬質塩化ビニルと軟質塩化ビニル等の組合せでも良い。 As a hard resin for 11 may be use a HD-PE for example, it may be other as hard combination of vinyl chloride and soft polyvinyl chloride. 尚、軟質性樹脂と硬質性樹脂は互いに溶融し易い本例の如き同系統の材料の組合せが境界部の強度面等から望ましいが、親和性に乏しい材料の組合せでも接着剤等を介在させることにより適用することが可能である。 Although the combination of the soft resin and the hard resin is melted easily this example of such cognate materials together it is desirable from the intensity surface or the like of the boundary portion, also to interpose an adhesive or the like in combination with poor material affinity It can be applied by. 今、第1押出機3にHD−PEを第2 Now, the HD-PE in the first extruder 3 and the second
押出機4にLD−PEを供給すべく押出機を選択する。 Extruder 4 selects an extruder to supply LD-PE.
そして、流路3aからシャットオフバルブ9を介して第1流路7を通り注出口6dに至る流路にはHD−PEを通流させ、他方の流路4aからシャットオフバルブ10 Then, the flow path leading to the spout 6d through the first flow path 7 via the shut-off valve 9 from the flow path 3a flowed through the HD-PE, shut-off valve 10 from the other flow passage 4a
を介して第2流路8を通り注出口6dに至る流路にはL The flow passage of the second flow path 8 to the spout 6d passes through the L
D−PEを通流させておく。 Previously flowed through the D-PE.

【0009】先ず、製品のパイプPのHD−PEから成るP 10の部分に相当するパリソンp 10を注出する為、バルブ9を開いて第1押出機3を稼動させると共に、バルブ10を閉じて第2押出機4を停止させる。 [0009] First, in order to dispense the parison p 10 corresponding to the portion of the P 10 consisting of HD-PE pipe P product, along with operating the first extruder 3 by opening the valve 9, closing the valve 10 the second extruder 4 is stopped Te. パリソンp 10が製品PのP 10部分の長さL 10部分に相当する長さl 10だけ注出されたら、マイクロコンピュータを備えた制御手段11は所定のプログラムに基づきバルブ9を閉じて第1押出機3を停止させ、バルブ1 Once the parison p 10 is dispensed by a length l 10 corresponding to the length L 10 parts of P 10 portion of the product P, the the control means 11 which includes a microcomputer closes the valve 9 on the basis of a predetermined program 1 the extruder 3 is stopped, the valve 1
0を開いて第2押出機4を稼動させる。 Open 0 operating the second extruder 4. これにより、注出されるパリソンpの材料がパイプPの蛇腹部P に相当するLD−PEに切換えられる。 Thus, the material of the parison p being dispensed is switched to the LD-PE corresponding to the bellows portion P 2 of the pipe P. この場合、各シャットオフバルブ9,10が注出口6dから離れている為、 In this case, for each shut-off valve 9, 10 is away from the spout 6d,
シャットオフバルブ9,10の開閉動作に追従して直ちに注出される材料が換わらず徐々に切り変えられる。 Material immediately dispensed to follow the opening and closing operation of the shut-off valve 9, 10 is changed gradually cut unchanged. この為、図示される如く、その境界面が注出方向に対して斜めに形成されるが、それは実用上不都合のない程度であり、又却って機械的強度が低下する境界部の強度アップに寄与する。 Therefore, as shown, but the boundary surface is formed obliquely with respect to the direction pouring, it is a degree no practical inconvenience also rather contribute to the increased strength of the boundary portion, the mechanical strength is lowered to. LD−PEからなるパリソンp 部分が蛇腹部P の長さL に相当する長さのl だけ注出されたら、同様に制御手段11が、初めのパリソンp 10 When LD-PE parisons p 2 part consisting of is dispensed only l 2 the length of which corresponds to the length L 2 of the bellows portion P 2, likewise the control unit 11, the beginning of the parison p 10
を注出した元の状態に各バルブと各押出機の動作状態を切換え、パイプPのP 11部分に相当するHD−PEからなるパリソンを注出する。 To the original state that issued Note switching the operating state of each valve and each extruder to dispense a parison made of HD-PE corresponding to P 11 portion of the pipe P. かくの如くして形成されたパイプPの材質構成に相当する材料構成を有するパリソンpを直下に配置した金型(不図示)内に収納して型締した後、例えば通風孔6a から加圧気体を吹き込みブロー成形すれば、図3(a)に示される如き伸縮性に富んだ蛇腹部P を有するパイプPを得ることができる。 After mold clamping is housed in the parison mold that is disposed immediately below the p (not shown) in having the material composition corresponding to the material structure of the pipe P formed by As Thus, for example, is applied from the ventilation holes 6a 1 if blow molding blowing pressure gas, it is possible to obtain a pipe P having a bellows portion P 2 rich in such stretch shown in FIG. 3 (a).
尚、吹込方法をその他の任意の公知の方法を使用可能であることは勿論である。 Incidentally, it is needless to say blowing method can be used any other known method.

【0010】尚、上記実施例に於いては、シャットオフバルブ9,10と第1、第2押出機3,4の動作を連動させてパリソンの注出材料の切換を行なったが、材料の境界部を比較的長く見込める製品に対しては、シャットオフバルブ9,10を省略し第1,第2押出機3,4だけを制御手段11で駆動制御し所望の材料構成を有するパリソンを得ることも可能である。 [0010] Note that in the above-mentioned embodiment, the shut-off valves 9 and 10 and the first, in conjunction with operation of the second extruder 3, 4 has been subjected to switching of the parison dispensing material, material for relatively long expected product boundary, obtaining a parison having a shut-off first is omitted valves 9 and 10, only the second extruder 3 and 4 the control means 11 drive control to a desired material composition it is also possible.

【0011】次に、本発明装置の他の実施例について図4の模式図に基づき説明する。 [0011] Next, another embodiment of the present invention apparatus based on the schematic diagram of FIG. 4 will be described. 尚、以下の実施例に於いては、上記実施例と同一構成要素については同一符号を付しその説明を省略する。 Note that at the following examples is omitted subjected thereof illustrating the same reference numerals are given to the same components as the above embodiment. 本例に於いては、2種類の材料を通流させる2系統の流路の開閉を、シャットオフバルブによらずにマンドレル12を長手軸方向に移動させて行なう構成となっている。 In the present embodiment, two types of opening and closing of the flow path of the two systems to flow through the material, and has a configuration for performing moving the mandrel 12 in the longitudinal axis direction regardless of the shut-off valve. 即ち、図4に示される如く、ノズル6内に長手軸方向に移動自在に挿通支持されたマンドレル12の外部に突出した上部は例えば油圧装置等の駆動手段13に連結されている。 That is, as shown in FIG. 4, the upper protruding to the outside of the movably inserted and supported mandrel 12 is connected to a drive means 13 such as a hydraulic device for example longitudinally within the nozzle 6. この駆動手段1 The drive means 1
3は同様に制御手段11に接続されている。 3 is connected to the control means 11 as well.

【0012】而して、マンドレル12の注出口6dに近い下端部には、その全周面に亘り突部ないしは係合部1 [0012] In Thus, the lower end near the spout 6d of the mandrel 12, projection or the engaging portion 1 over its entire peripheral surface
4が形成されている。 4 is formed. 又、このマンドレル12の周面に対向する内管部6bの内面6b の下端部で上記突部ないしは係合部14より若干上部に離れた位置には、突部ないしは係合部15が突部ないしは係合部14と係合可能にその内周面に沿って形成されている。 Further, at a position spaced slightly above the said projection or the engaging portion 14 at the lower end portion of the inner surface 6b 1 of the inner pipe portion 6b facing the peripheral surface of the mandrel 12, collision is projection or engaging portion 15 parts or along the engaging portion 14 engageable with the inner peripheral surface thereof is formed. 従って、マンドレルを上下方向に移動させることにより第1流路7が開閉されここを流動する材料の流量を調節することができる。 Therefore, it is possible to first passage 7 is opened and closed by moving the mandrel up and down to adjust the flow rate of the material flowing here.

【0013】尚、本例の装置により図3(a)乃至(c)に示した構成を有する中空成形品を製造する場合、マンドレル12を下降させて第1流路7を開くと共に第2押出機4を停止させて材料の切換を行なえば良い。 [0013] In the case of producing a hollow molded article having a structure shown in FIGS. 3 (a) to (c) by the device of the present embodiment, the second extruding opens the first flow path 7 lowers the mandrel 12 machine 4 is stopped may be carried switching material. 又、2種類の注出材料の切換をより自在に行なう為には、第2押出機4の流路4aにのみシャットオフバルブ10を設ける構成としても良い。 Also, in order for switching the two kinds of pouring material more freely it may be provided with a shut-off valve 10 only in the flow path 4a of the second extruder 4. 更に、内管部6bが上下方向に移動自在となる様にノズル6を構成し、図5 Further, as the inner tube portion 6b be movable in the vertical direction to constitute a nozzle 6, FIG. 5
に示す如く、第2流路8を形成する内管部6bの外周面と外管部6cの内周面に内管部6bを上昇させることにより係合可能に突部16,17を夫々形成してもよい。 As shown in, can engage the projections 16, 17 respectively formed by raising the inner pipe portion 6b on the outer peripheral surface and the inner peripheral surface of the outer tube portion 6c of the inner tube portion 6b forming the second flow path 8 it may be.
この場合、内管部6bを上下動させることにより抽出すべき材料の切換を鋭敏に実施できる。 In this case, it sharply implement switching of the material to be extracted by vertically moving the inner tubular part 6b.

【0014】 [0014]

【発明の効果】以上詳述した如く、本発明によれば、成形すべき製品の材質構成に対応して複種類の材料の注出を制御しパリソンを形成することにより、用途に応じた複合材質を備えた中空成形品を容易に成形可能となる。 As has been described above in detail, according to the present invention, by forming a parison to control the dispense of multiple types of material corresponding to the material structure of the product to be molded, composite according to the application a hollow molded article having the material easily becomes moldable.
又、複数の材料から成る中空成形品の成形毎に発生するロス材が単一の材料となる様に材料注出を制御できる為、ロス材の再生利用率を大幅に向上させることができる。 Further, since the loss material occurs every molding of hollow molded articles composed of a plurality of materials can be controlled material dispensing as a single material, a recycling rate of loss material can be greatly improved. 従って、用途に適した複合材質を有する高品質の中空成形品を安価に製造可能となる。 Thus, less expensive to manufacture high quality hollow molded article having a composite material suitable for use. 尚、本発明は上記の特性の実施例に限定されるべきものではなく、本発明の技術的範囲に於いて種々の変形が可能であることは勿論である。 The present invention is not intended to be limited to the embodiments above properties, it may be variously modified at the technical scope of the present invention as a matter of course.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】 3層構造を有する容器Cを示した模式的断面図。 Figure 1 is a schematic sectional view showing a container C having a three-layer structure.

【図2】 本発明の1実施例を示した模式図。 Schematic diagram showing one embodiment of the present invention; FIG.

【図3】 本発明に基づいて形成された夫々2種類の材質を備えた中空成形品(a)乃至(c)を示した各説明図。 Each explanatory view showing hollow molded article (a) to (c) with the formed respectively two materials based on the present invention; FIG.

【図4】 本発明の他の実施例を示した模式図。 Schematic diagram showing another embodiment of the present invention; FIG.

【図5】 図4に示した実施例の変形例を示した説明図。 Figure 5 is an explanatory view showing a modification of the embodiment shown in FIG.

【符号の説明】 DESCRIPTION OF SYMBOLS

3 第1押出機 4 第2押出機 6 ノズル 7,18 第1流路 8,19 第2流路 9,10 シャットオフバルブ 11 制御手段 14〜17 係合突部 20 第3流路 3 first extruder 4 and the second extruder 6 nozzle 7, 18 first flow path 8, 19 second flow path 9, 10 shut-off valve 11 the control means 14 to 17 the engaging protrusion 20 third flow path

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl. 6識別記号 庁内整理番号 FI 技術表示箇所 B29C 49/78 7619−4F // B29L 9:00 22:00 ────────────────────────────────────────────────── ─── front page continued (51) Int.Cl. 6 identification symbol Agency Docket No. FI art display portion B29C 49/78 7619-4F // B29L 9:00 22:00

Claims (2)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 原材料を溶融し注出口まで送給する少なくとも2つの供給路、前記供給路を前記注出口の近傍において選択的に閉塞させる供給口閉塞手段、前記注出口から注出されたパリソンを成形型内に収納し所望の形状にブロー成形するブロー成形手段、を有しており、前記供給口閉塞手段が前記供給路内に対向する壁面から互いに反対方向に突出して相対的に接離自在に設けた少なくとも一対の突起を具備しており、前記一対の突起が接離移動されることにより前記供給路が開閉制御されることを特徴とする中空成形品の製造装置。 1. A feed to spout molten raw materials Kyusuru least two supply path, the supply port closing means for the supply passage is selectively closed in the vicinity of the spout, parison the note has been dispensed from the outlet blow molding means for blow-molding the housing with a desired shape in a mold, has a relatively separable the supply port closing means protrudes in opposite directions from the wall surface facing the supply channel and comprising at least a pair of projections provided freely, hollow molded article manufacturing apparatus, characterized in that said pair of projections the supply passage is opened and closed controlled by being separable moved.
  2. 【請求項2】 原材料を溶融し注出口まで送給する少なくとも2つの供給路、前記各供給路へ原材料を供給する供給手段、前記各供給路に設けたシャットオフバルブ、 2. A feed to spout molten raw materials Kyusuru least two supply paths, supply means for supplying raw material the to the supply passage, the shut-off valve the provided to each supply passage,
    前記シャットオフバルブと前記供給手段とに動作結合されており前記注出口の近傍において前記夫々の供給路からの原材料を切り替えるように前記シャットオフバルブ及び前記供給手段の動作を制御する制御手段、前記注出口から注出されたパリソンを成形型内に収納し所望の形状にブロー成型するブロー成形手段、を有することを特徴とする中空成形品の製造装置。 Control means for controlling the operation of the shut-off valve and said supply means to switch the raw materials from the respective supply channel in the vicinity of the spout is operatively coupled to said supply means and said shut-off valve, wherein Note blow molding means the dispensed parison from the outlet accommodated in the mold to blow molding into a desired shape, a hollow molded article manufacturing apparatus characterized by having.
JP3133790A 1991-03-30 1991-03-30 The hollow molded article manufacturing apparatus Expired - Lifetime JPH0767730B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3133790A JPH0767730B2 (en) 1991-03-30 1991-03-30 The hollow molded article manufacturing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3133790A JPH0767730B2 (en) 1991-03-30 1991-03-30 The hollow molded article manufacturing apparatus

Publications (2)

Publication Number Publication Date
JPH05245912A JPH05245912A (en) 1993-09-24
JPH0767730B2 true JPH0767730B2 (en) 1995-07-26

Family

ID=15113077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3133790A Expired - Lifetime JPH0767730B2 (en) 1991-03-30 1991-03-30 The hollow molded article manufacturing apparatus

Country Status (1)

Country Link
JP (1) JPH0767730B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0767731B2 (en) * 1991-03-30 1995-07-26 エクセル株式会社 Method for producing a hollow molded article

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029471A (en) * 1959-10-14 1962-04-17 Owens Illinois Glass Co Method and apparatus for making plastic articles
US3457337A (en) * 1964-04-01 1969-07-22 Continental Can Co Method for producing coated containers
US3752617A (en) * 1969-10-13 1973-08-14 Sherwood Medical Ind Inc Apparatus for extruding products of plural components of varied proportions with scrap reclamation
JPS5161566A (en) * 1974-11-27 1976-05-28 Yoshino Kogyosho Co Ltd Shu fukuondashisochiojusuru burooseikeikiniokeru fukuryuro
JPS51103158A (en) * 1975-03-07 1976-09-11 Ishikawajima Harima Heavy Ind Fukikomiseikeihoho
JPS51134758A (en) * 1975-05-19 1976-11-22 Ishikawajima Harima Heavy Ind Method and device for controlling thickness of extrusion molded multiilayer column
JPS52964A (en) * 1975-06-24 1977-01-06 Kamaya Kagaku Kogyo Co Ltd Method of producing hollow molded article having different colored lateral fringe pattern
JPS5237026A (en) * 1975-09-17 1977-03-22 Matsushita Electric Ind Co Ltd Dropout prevention method
US4165035A (en) * 1977-10-05 1979-08-21 Eaton Corporation Thermally actuated valve for plural fluid sources
JPS54133562A (en) * 1978-04-10 1979-10-17 Ishikawajima Harima Heavy Ind Co Ltd Parison comtroller for blow molding machine
US4276250A (en) * 1979-10-29 1981-06-30 Sherwood Medical Industries, Inc. Apparatus and method for producing tubular extrusions having axial sections of materials having different characteristics
JPS5753175A (en) * 1980-09-16 1982-03-30 Nec Corp Absence transfer system
JPS5882732A (en) * 1981-11-13 1983-05-18 Ekuseru Kk Lustrous molded product with hollow

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029471A (en) * 1959-10-14 1962-04-17 Owens Illinois Glass Co Method and apparatus for making plastic articles
US3457337A (en) * 1964-04-01 1969-07-22 Continental Can Co Method for producing coated containers
US3752617A (en) * 1969-10-13 1973-08-14 Sherwood Medical Ind Inc Apparatus for extruding products of plural components of varied proportions with scrap reclamation
JPS5161566A (en) * 1974-11-27 1976-05-28 Yoshino Kogyosho Co Ltd Shu fukuondashisochiojusuru burooseikeikiniokeru fukuryuro
JPS51103158A (en) * 1975-03-07 1976-09-11 Ishikawajima Harima Heavy Ind Fukikomiseikeihoho
JPS51134758A (en) * 1975-05-19 1976-11-22 Ishikawajima Harima Heavy Ind Method and device for controlling thickness of extrusion molded multiilayer column
JPS52964A (en) * 1975-06-24 1977-01-06 Kamaya Kagaku Kogyo Co Ltd Method of producing hollow molded article having different colored lateral fringe pattern
JPS5237026A (en) * 1975-09-17 1977-03-22 Matsushita Electric Ind Co Ltd Dropout prevention method
US4165035A (en) * 1977-10-05 1979-08-21 Eaton Corporation Thermally actuated valve for plural fluid sources
JPS54133562A (en) * 1978-04-10 1979-10-17 Ishikawajima Harima Heavy Ind Co Ltd Parison comtroller for blow molding machine
US4276250A (en) * 1979-10-29 1981-06-30 Sherwood Medical Industries, Inc. Apparatus and method for producing tubular extrusions having axial sections of materials having different characteristics
JPS5753175A (en) * 1980-09-16 1982-03-30 Nec Corp Absence transfer system
JPS5882732A (en) * 1981-11-13 1983-05-18 Ekuseru Kk Lustrous molded product with hollow

Also Published As

Publication number Publication date
JPH05245912A (en) 1993-09-24

Similar Documents

Publication Publication Date Title
US20200017282A1 (en) Integrally blow-moulded bag-in-container having an inner layer and the outer layer made of the same material and preform for making it
KR100429582B1 (en) The oriented polymer stuff
US3004285A (en) Hollow plastic articles and their manufacture
AU684372B2 (en) Multi-layer containers
AU2008240668B2 (en) Integral two layer preform, process and apparatus for the production thereof, process for producing a blow-moulded bag-in container, and bag-in-container thus produced
US4629598A (en) Method for forming plastic bottle with integral handle
EP0034158B2 (en) Multi-layer article and method of making same
US4781954A (en) Preform with internal barrier and products made from the same
US3736201A (en) Method for molding bowl-shaped articles
ES2217074T3 (en) Method to produce a container container.
US3457337A (en) Method for producing coated containers
US9517876B2 (en) Integrally blow-moulded bag-in-container having an inner layer and the outer layer made of the same material and preform for making it
US4550043A (en) Preform with internal barrier and internal layer of high thermal stability and products made from the same
US5368458A (en) Apparatus for manufacturing bodies of polymeric material having a core of foamed material enclosed by an outer shell
US5945048A (en) Process and device for extruding polymer melts to form hollow chamber sections
EP2743054B1 (en) Method of manufacturing an article
US3409710A (en) Method of molding dual wall container and closure
US3023461A (en) Method for extruding plastic materials
CN1082875C (en) Method and apparatus for controlling co-extrusion plastic materials by using throttle valve
US4390581A (en) Moulding
US3223761A (en) Melt extrusion of multi-wall plastic tubing
US4047868A (en) Multilayer parison extrusion molding machine for blow molding
CA1283064C (en) Container, method, arrangement for manufacturing the same
EP1183145B1 (en) Device for producing extrusion blow-molded containers with at least two chambers
JP3138237B2 (en) Valve gate injection nozzle, the injection molding system and method

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term