JPS59199218A - Preparation of hollow molded article having projection - Google Patents

Preparation of hollow molded article having projection

Info

Publication number
JPS59199218A
JPS59199218A JP58073956A JP7395683A JPS59199218A JP S59199218 A JPS59199218 A JP S59199218A JP 58073956 A JP58073956 A JP 58073956A JP 7395683 A JP7395683 A JP 7395683A JP S59199218 A JPS59199218 A JP S59199218A
Authority
JP
Japan
Prior art keywords
mold
projection
parison
hollow molded
protrusion
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
JP58073956A
Other languages
Japanese (ja)
Other versions
JPS634773B2 (en
Inventor
Yasuo Ezaki
江崎　恭夫
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.)
Ekuseru Kk
Cargill Meat Solutions Corp
Original Assignee
Ekuseru Kk
Excel Corp
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 Ekuseru Kk, Excel Corp filed Critical Ekuseru Kk
Priority to JP58073956A priority Critical patent/JPS59199218A/en
Publication of JPS59199218A publication Critical patent/JPS59199218A/en
Publication of JPS634773B2 publication Critical patent/JPS634773B2/ja
Priority to US08/703,249 priority patent/US20010042947A1/en
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
    • B29C49/4242—Means for deforming the parison prior to the blowing operation
    • 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
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/74—Bypassing means, i.e. part of the molten material being diverted into downstream stages of the extruder
    • 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
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • B29C2049/2017—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements outside the article
    • 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
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • B29C2049/2021—Inserts characterised by the material or type
    • B29C2049/2069—Inserts characterised by the material or type moulded in combination, e.g. injection moulded in the same mould before or after blow-moulding
    • 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
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • B29C2049/2073—Means for feeding the inserts into the mould, preform or parison, e.g. grippers
    • 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
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding

Abstract

PURPOSE:To obtain a hollow molded article having a projection high in the bonding strength of said projection and the main body thereof with reduced material loss in good productivity, by molding a molten stock material in such a state said stock material is received in a place corresponding to the projection of a separate mold. CONSTITUTION:A molten stock material 8 is injected into the projection forming groove 10a of a first mold 9 from a sub-conduit 4a. In the next step, the molten stock material 8 is extruded as a cylindrical parison 13 from an extrusion nozzle 5 and the parison is received in the groove of the first mold 9. Subsequently, the first mold 9 is matched with a second mold 14 to perform mold clamping and, thereafter, a pressure fluid is blown into the parison 13 to press the same to the molds 9, 14 by the pressure of said fluid. Thereafter, the molded one is demolded and cooled at an atmospheric temp. to obtain a hollow molded article having a projection.

Description

【発明の詳細な説明】 反ｌ１１Ｌ 本発明は変形中空成形品の製造方法に関するものであり
、より詳細には突起部等の凹凸状の付加部品を有する中
空成形品の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a deformed hollow molded product, and more particularly to a method for manufacturing a hollow molded product having uneven additional parts such as protrusions.

１迷」口（ 従来、第１図に示される様な突起部１を有する中空製品
２を製造する場合は、まず突起部１を除いた本体２′を
ブローモールド法で成形し、これに予め適当な成形方法
で成形された突起部１を二次的に固着する方法が採用さ
れていた。然るに、この様な方法では、工程が数工程に
分断される為生産性が著しく低下し、生産性が良いとい
う中空成形法の基本的な長所が活かされていなかった。Conventionally, when manufacturing a hollow product 2 having a protrusion 1 as shown in Fig. 1, the main body 2' excluding the protrusion 1 is first molded by blow molding, and then a A method has been adopted in which the protrusion 1 formed by an appropriate molding method is secondarily fixed. However, in such a method, the process is divided into several steps, resulting in a significant decrease in productivity and The basic advantage of the blow molding method, which is good properties, was not utilized.

一方、突起部１も本体２−と一体にブローモールド法で
製造することも可能であるが、この場合には、パリソン
を突起部１まで行き亘らせる為に、型締を行なう前にパ
リソン内部に圧力流体を吹込みパリソンをある程度まで
膨張させ、この後型締を行ない中空成形する。然しなが
ら、上記方法に於いては、型締の際膨張したパリソンを
成形型の接合面の全周に於いて食い切り、材料損失が甚
しく又後のパリ取りにも手間がかかるという不都合があ
る。又、パリソンを部分的に膨張拡大させて食い切られ
る部分を限定させる方法も考えられるが、パリソンのメ
ルトインデックスとの兼合いから部分的にパリソンの硬
度及び肉厚を変えることは非常に困難である。又、突起
部１に螺子穴等を設は他の部材との結合をする場合には
、突起部１自体の強度の他突起部１と本体２′と結合強
度も共に大きいことが要求されるが、上記第３方法に於
いては、要望される結合強度が得られないという問題が
ある。On the other hand, it is also possible to manufacture the protrusion 1 integrally with the main body 2- by blow molding, but in this case, in order to spread the parison all the way to the protrusion 1, the parison is removed before mold clamping. Pressure fluid is blown into the inside to expand the parison to a certain extent, after which the mold is clamped and hollow molded. However, in the above method, there is a disadvantage that the expanded parison during mold clamping is eaten away at the entire circumference of the joint surface of the mold, resulting in significant material loss and requiring time and effort to remove the paris afterwards. Another possibility is to partially expand and expand the parison to limit the part that is eaten away, but it is extremely difficult to partially change the hardness and wall thickness of the parison due to the balance with the melt index of the parison. be. Furthermore, when providing a screw hole or the like in the protrusion 1 to connect it to another member, it is required that the strength of the protrusion 1 itself as well as the bonding strength between the protrusion 1 and the main body 2' be high. However, the third method has a problem in that the desired bonding strength cannot be obtained.

目　　的 本発明は、以上の点に鑑みなされたものであり、生産性
が良いと共に材料損失も少なく且つ突起部と中空成形品
本体との結合強度が高い突起部を有する中空成形品の製
造方法を提供することを目的とする。Purpose The present invention has been made in view of the above points, and provides a method for manufacturing a hollow molded product having a protrusion that has good productivity, less material loss, and high bonding strength between the protrusion and the main body of the hollow molded product. The purpose is to provide

旦−ｊ【 本発明は、突起部を有する中空成形品の第１成形型の前
記突起部に相当する凹部に溶融した原材料を供給する工
程と、前記第１成形型の他の凹部に前記原材料からなる
パリソンを供給する工程と、前記第１成形型と少なくと
も１つの第２成形型とで型締を行なう工程と、前記パリ
ソンに加圧流体を吹込む工程とを有することを特徴とす
る突起部を有する中空成形品の製造方法である。[The present invention provides a step of supplying a molten raw material to a recess corresponding to the protrusion of a first mold of a hollow molded product having a protrusion, and a step of supplying the raw material to another recess of the first mold. a step of supplying a parison consisting of a mold, a step of clamping the first mold and at least one second mold, and a step of blowing pressurized fluid into the parison. This is a method for manufacturing a hollow molded product having a part.

以下、本発明の具体的実施の態様を添付の図面を参照し
て説明する。第２図に図示する中空成形品の製造装置を
参照しながら、本発明方法を説明する。Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. The method of the present invention will be explained with reference to a blow molded product manufacturing apparatus illustrated in FIG.

ホッパ３には中空成形品原材料物質が貯留されており、
ホッパ３の下部には導管４が連結されており、導管４の
他端部には押し出しノズル５が設けられており、導管４
内部にはオーガスクリュ６が回転自在に内挿されており
、更に導管４の外周にはヒータバンド７が巻着されてい
る。従って、ホッパ３内の原材料物質は、導管４内に進
入しオーガスクリュ６等により押出しノズル５まで搬送
されるが、この径路はヒータバンド７により加熱されて
いる為、導管４内の原材料物質は溶融状態に維持されて
いる。The hopper 3 stores raw materials for hollow molded products.
A conduit 4 is connected to the lower part of the hopper 3, and an extrusion nozzle 5 is provided at the other end of the conduit 4.
An auger screw 6 is rotatably inserted inside the conduit 4, and a heater band 7 is wrapped around the outer periphery of the conduit 4. Therefore, the raw material in the hopper 3 enters the conduit 4 and is conveyed to the extrusion nozzle 5 by the auger screw 6 etc., but since this path is heated by the heater band 7, the raw material in the conduit 4 maintained in a molten state.

而して、例えＮｆ第３図に図示する如く、溶融した原材
料物質を副導管４ａから、第４図に図示する第１成形型
９の突起部溝１０ａに、溶融した原材料物質８を注入す
る。この場合の注入量は、例えばバルブ４ｂで調節する
ことが可能であるが、少なくとも製品の突起部１の容量
より多くなる様に設定する必要がある。尚、この注入工
程は手作業によっても可能である。Then, as shown in FIG. 3, the molten raw material 8 is injected from the sub-conduit 4a into the protrusion groove 10a of the first mold 9 shown in FIG. . The injection amount in this case can be adjusted, for example, with the valve 4b, but it needs to be set so that it is at least larger than the volume of the protrusion 1 of the product. Note that this injection step can also be performed manually.

次に、第３図に示す如く、導管４から溶融した原材料物
質８は押出しノズル５に進入し、外ダイス１１及び中ダ
イス１２により構成される円筒状の流路を経て、押出し
ノズル５から円筒状のパリソン１３が注出される。この
パリソン１３を第５図に示す如く、第１成形型９の溝１
０に収納する。Next, as shown in FIG. 3, the melted raw material 8 enters the extrusion nozzle 5 from the conduit 4, passes through a cylindrical flow path constituted by an outer die 11 and an inner die 12, and exits the extrusion nozzle 5 into the cylindrical A parison 13 of the shape is poured out. As shown in FIG.
Store it in 0.

次に、第５図矢印方向に夫々第１成形型９と第２成形型
１４を整合させ型締を行なう。この型締の際、突起部の
溝１０ａに収納されている原材料物質の塊８の型からは
み出した部分は型締によりパリとなる。Next, the first mold 9 and the second mold 14 are aligned in the direction of the arrow in FIG. 5, respectively, and the molds are clamped. During this mold clamping, the portion of the lump 8 of the raw material contained in the groove 10a of the protrusion that protrudes from the mold is flattened by the mold clamping.

次に、パリソン１３内に加圧流体を吹込んで、加圧流体
の圧力でもって成形型９，１４にパリソン１３を押圧さ
せる。この為、突起部１の原材料物質の塊８とパリソン
１３は同一の材料から構成されるので完全に一体化され
る。この後離型し例えば常温で冷却を行なうと突起部を
有する中空成形品が得られる。Next, pressurized fluid is blown into the parison 13, and the parison 13 is pressed against the molds 9 and 14 by the pressure of the pressurized fluid. For this reason, the lump 8 of raw material of the protrusion 1 and the parison 13 are made of the same material and are therefore completely integrated. After this, the mold is released and cooled, for example, at room temperature, to obtain a hollow molded product having protrusions.

効　　果 以上、詳細に説明した如く、本発明製造方法に拠れば、
一連の工程で突起部を有する中空成形品を製造可能であ
り、溶融した原材料物質を別途成形型の突起部相当箇所
に収納させて成形するので材料損失が極めて小さくパリ
取りにも過剰の手間を要することなく製造可能である。Effects As explained in detail above, according to the manufacturing method of the present invention,
It is possible to manufacture hollow molded products with protrusions through a series of processes, and since the molten raw material is stored separately in the part corresponding to the protrusion of the mold and then molded, material loss is extremely small and there is no need for excessive effort in removing deburrs. It can be manufactured without any need.

更に、突起部を有する中空成形品の中空成形品本体と突
起部とが、同一材料から一体的に形成されるので、突起
部と本体との結合強度が非常に高く、螺子穴等を突起部
に穿設して他の物体を螺着させることが可能である。又
、このことにより、突起部と本体との結合部に荷重が加
わっても、従来の如き中空成形品本体に二次的に突起部
を固着して製造した成形品と異なり、突起部が本体から
離脱することはない。Furthermore, since the hollow molded product main body and the protrusion of the hollow molded product having the protrusion are integrally formed from the same material, the bonding strength between the protrusion and the main body is extremely high, and the screw hole etc. can be easily inserted into the protrusion. It is possible to drill holes in the hole and screw other objects onto it. Additionally, even if a load is applied to the joint between the protrusion and the main body, unlike conventional molded products manufactured by secondarily fixing the protrusion to the main body of the hollow molded product, the protrusion remains in the main body. There will be no departure from.

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

第１図は突起部を有する中空成形品の斜視図、第２図は
中空成形品を製造する製造装置の模式図、第３図はパリ
ソンの形成及び溶融した原材料物質の成形型突起部供給
を説明する説明図、第４図は第１成形型の平面図、第５
図はパリソン及び原材料物質の塊が収納されている第１
成形型に第２成形型を整合させて型締を行なう模様を説
明する説明図である。 （符号の説明） １：　突起部　　　　　　２：　中空成形品５：　押し
出しノズル　　８：　原材料物質塊９：　第１成形型　
　　１３：　パリソン１４：　第２成形型 特許出願人　　　エ　り　セ　ル　株式会社＋′−−“
ノー 第２図 第３図Fig. 1 is a perspective view of a hollow molded product having a protrusion, Fig. 2 is a schematic diagram of a manufacturing device for manufacturing the hollow molded product, and Fig. 3 shows the formation of a parison and the supply of molten raw material to the mold protrusion. Explanatory drawings to explain, Figure 4 is a plan view of the first mold, and Figure 5 is a plan view of the first mold.
The figure shows the first part containing the parison and the mass of raw material.
FIG. 6 is an explanatory diagram illustrating a pattern in which a second mold is aligned with the mold and the mold is clamped. (Explanation of symbols) 1: Projection 2: Hollow molded product 5: Extrusion nozzle 8: Raw material mass 9: First mold
13: Parison 14: Second molding mold patent applicant Eliseru Co., Ltd.
No Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] １、突起部を有する中空成形品の第１成形型の前記突起
部相当凹所に溶融した原材料を供給する工程と、前記第
１成形型に前記原材料からなるパリソンを収納する工程
と、前記第１成形型と少なくとも１つの第２成形型とで
型締を行なう工程と、前記パリソンに加圧流体を吹込む
工程とを有することを特徴とする突起部を有する中空成
形品の製造方法。1. Supplying a molten raw material to a recess corresponding to the protrusion of a first mold of a hollow molded product having a protrusion; Storing a parison made of the raw material in the first mold; A method for producing a hollow molded product having a protrusion, the method comprising the steps of clamping one mold and at least one second mold, and blowing pressurized fluid into the parison.
JP58073956A 1983-04-28 1983-04-28 Preparation of hollow molded article having projection Granted JPS59199218A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP58073956A JPS59199218A (en) 1983-04-28 1983-04-28 Preparation of hollow molded article having projection
US08/703,249 US20010042947A1 (en) 1983-04-28 1996-08-26 Method for manufacturing a hollow plastic product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58073956A JPS59199218A (en) 1983-04-28 1983-04-28 Preparation of hollow molded article having projection

Publications (2)

Publication Number Publication Date
JPS59199218A true JPS59199218A (en) 1984-11-12
JPS634773B2 JPS634773B2 (en) 1988-01-30

Family

ID=13533034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58073956A Granted JPS59199218A (en) 1983-04-28 1983-04-28 Preparation of hollow molded article having projection

Country Status (1)

Country Link
JP (1) JPS59199218A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63158382A (en) * 1986-12-18 1988-07-01 鬼怒川ゴム工業株式会社 Air duct
CN104149336A (en) * 2014-08-26 2014-11-19 常州常利来电子有限公司 Automatic riveting press of safety piece

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4865622U (en) * 1971-11-25 1973-08-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4865622U (en) * 1971-11-25 1973-08-20

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63158382A (en) * 1986-12-18 1988-07-01 鬼怒川ゴム工業株式会社 Air duct
CN104149336A (en) * 2014-08-26 2014-11-19 常州常利来电子有限公司 Automatic riveting press of safety piece

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JPS634773B2 (en) 1988-01-30

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