JPH02255320A - Mold device for blow molding - Google Patents

Mold device for blow molding

Info

Publication number
JPH02255320A
JPH02255320A JP1079504A JP7950489A JPH02255320A JP H02255320 A JPH02255320 A JP H02255320A JP 1079504 A JP1079504 A JP 1079504A JP 7950489 A JP7950489 A JP 7950489A JP H02255320 A JPH02255320 A JP H02255320A
Authority
JP
Japan
Prior art keywords
parison
cavity
mold
occurring
end part
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
Application number
JP1079504A
Other languages
Japanese (ja)
Inventor
Masatoshi Suzuki
正敏 鈴木
Toshiaki Yamaguchi
利昭 山口
Toshikatsu Haraikawa
祓川　利勝
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.)
Kinugawa Rubber Industrial Co Ltd
Original Assignee
Kinugawa Rubber Industrial 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 Kinugawa Rubber Industrial Co Ltd filed Critical Kinugawa Rubber Industrial Co Ltd
Priority to JP1079504A priority Critical patent/JPH02255320A/en
Publication of JPH02255320A publication Critical patent/JPH02255320A/en
Pending 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
    • 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
    • B29C49/04118—Means for supporting the extruded parison
    • 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
    • B29C49/4205—Handling means, e.g. transfer, loading or discharging means
    • 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
    • B29C49/4205—Handling means, e.g. transfer, loading or discharging means
    • B29C49/42073—Grippers
    • B29C49/42089—Grippers holding body portion
    • 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
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C2049/4874—Moulds characterised by the material, e.g. having different thermal conductivities or hardness
    • B29C2049/4876—Moulds characterised by the material, e.g. having different thermal conductivities or hardness one material being heat insulating material
    • 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
    • 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
    • B29C49/4244—Means for deforming the parison prior to the blowing operation during or after laying preform into the final mould
    • B29C49/42442—Means for deforming the parison prior to the blowing operation during or after laying preform into the final mould by moving the extruder head
    • 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
    • B29C49/4244—Means for deforming the parison prior to the blowing operation during or after laying preform into the final mould
    • B29C49/42452—The mould opening plane being horizontal
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/004—Bent tubes

Abstract

PURPOSE:To surely prevent the solidification due to premature cooling of the lower end part of a parison at blow molding from occurring by a method wherein guide holes, which vertically pierce through the interior of a bottom force, are formed and, at the same time, a supporting mechanism, which supports the lower end part of the parison by properly protruding from below through the guide holes in a cavity, is provided at the lower part of the bottom force. CONSTITUTION:At a point of time when cylindrical parison 2 is extruded by an extruder 1 in the cavity 5 of a bottom force 3 in the molding of a suction duct, the tip parts 12a... and 13a... of return pins 12 and of supporting pins 13 respectively protrude through guide holes 7..., and 8... beyond the top face 4 of the bottom force 3 and the bottom inner peripheral surface 5c of the cavity 5 by means of the forces of coil springs 15..., resulting in supporting the lower end part 2a of the parison 2 by the tip parts 13a..., of the supporting pins 13... under the state of point contact. Accordingly, the direct surface contact between the parison 2 and the bottom inner peripheral surface 5c of the cavity 5 is prevented from occurring, resulting in surely preventing the heat absorption action of the bottom inner peripheral surface 5c from occurring. Thus, the solidification due to premature cooling of the lower end part 2a of the parison 5 can be fully prevented from occurring.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、ブロー成形機とりわけ、ダクト等の所謂長物
を成形するブロー成形用金型装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a blow molding machine, and particularly to a blow molding die device for molding so-called long objects such as ducts.

従来の技術 この種の従来のブロー成形用金型装置としては、種々の
ものが提供されており、その１つとして第５図に示すよ
うな目動車用内燃機関の吸気ダクトなどを成形する所謂
エクストルージョンタイプのものが一般に知られている
。BACKGROUND OF THE INVENTION Various types of conventional blow molding mold devices of this type are available, one of which is a so-called mold device for molding an intake duct of an internal combustion engine for a motor vehicle, as shown in FIG. Extrusion type ones are generally known.

このブロー成形用金型装置による成形方法は、まず熱可
塑性樹脂を押出機１で、可塑化すると共に該可塑化され
た円筒状の溶融樹脂（パリソン）を押し出し、この押し
出されたパリソン２が下金型３の上面４に形成された長
尺な蛇行状のキャビティ５の屈曲した底部内周面５Ｃ上
に充填される。In the molding method using this blow molding mold device, first, a thermoplastic resin is plasticized using an extruder 1, and the plasticized cylindrical molten resin (parison) is extruded, and this extruded parison 2 is The bent bottom inner circumferential surface 5C of the elongated meandering cavity 5 formed on the upper surface 4 of the mold 3 is filled.

続いて、キャビティ５以外の上面４に上記キャビティ５
と対応した蛇行状のキャビティを有する止金型６を型締
状態に閉じ、次に固化する前にパリソン２内部に空気を
吹き込んで（約５　ｋｇ／ｃｓｔ）膨張させ、両全型３
，６のキャビテイ５内壁面５ｂに押し付けて冷却固化さ
せるようになっている。Subsequently, the above-mentioned cavity 5 is placed on the upper surface 4 other than the cavity 5.
The stopper mold 6 having a meandering cavity corresponding to the above is closed in a clamped state, and then before solidification, air is blown into the parison 2 to expand it (approximately 5 kg/cst), and both molds 3
, 6 are pressed against the inner wall surface 5b of the cavity 5 to cool and solidify.

発明が解決しようとする課題 上記従来のブロー成形用金型装置にあっては、押出機１
から下金型３のキャビティ５内に押し出されたパリソン
２は、下端部位２ａが最初に面接触する底部内周面５ｃ
の吸熱作用によってパリソン２の押し出し中に先行して
冷却固化されてしまう。このため、その後パリソン２の
内部に空気を吹き込んで膨張させた際に、第６図に示す
ように下端部位２ａの肉厚が他の部位よりも厚くなり、
偏肉化してしまう虞がある。この結果、成形品の品質が
低下することは勿論のこと、外表面の美感も悪化する。Problems to be Solved by the Invention In the above conventional blow molding mold device, the extruder 1
The parison 2 extruded into the cavity 5 of the lower mold 3 has a bottom inner circumferential surface 5c with which the lower end portion 2a first makes surface contact.
Due to the endothermic action of the parison 2, the parison 2 is cooled and solidified in advance during extrusion. For this reason, when air is subsequently blown into the inside of the parison 2 to inflate it, the thickness of the lower end portion 2a becomes thicker than the other portions, as shown in FIG.
There is a risk of uneven thickness. As a result, not only the quality of the molded product deteriorates, but also the aesthetic appearance of the outer surface.

課題を解決するための手段 本発明は、上記従来のブロー成形用金型装置の実情に鑑
みて案出されたもので、とりわけ下金型の内部上下方向
にガイド孔を貫通形成すると共に、下金型の下部に、上
記ガイド孔を介してキャビティ内へ下方から適宜出没し
パリソンの下端部位を支持する支持機構を設けたことを
特徴としている。Means for Solving the Problems The present invention was devised in view of the actual situation of the conventional blow molding mold apparatus described above, and in particular, a guide hole is formed vertically inside the lower mold, and a guide hole is formed vertically inside the lower mold. The present invention is characterized in that a support mechanism is provided in the lower part of the mold, which extends and retracts appropriately from below into the cavity through the guide hole to support the lower end portion of the parison.

作用 上記構成の本発明によれば、押出機から押し出されたパ
リソンは、その下端部位がキャビティの内部に突出した
複数支持ビンの先端部によって支持されて、キャビティ
の内壁面との直接的な接触が回避される。つまり、パリ
ソンは、キャビティ内壁面の面接触による支持ではなく
支持ビンの先端部によって略点接触状態で支持されるた
め、下端部位の先行冷却が十分に防止される。尚、上記
支持ビンは、上金型の下金型への載置下動時に該上金型
と連動して没入移動し、先端縁がキャビティ内壁面と同
一平面になる。According to the present invention having the above-described structure, the parison extruded from the extruder is supported by the tips of the plurality of support bins whose lower end portions protrude into the interior of the cavity, so that the parison comes into direct contact with the inner wall surface of the cavity. is avoided. That is, the parison is not supported by surface contact with the inner wall surface of the cavity, but is supported by the tip of the support bin in a substantially point-contact state, so that preliminary cooling of the lower end portion is sufficiently prevented. When the upper mold is placed on and lowered from the lower mold, the support bottle retracts in conjunction with the upper mold, so that its tip edge becomes flush with the inner wall surface of the cavity.

実施例 以下、本発明に係るブロー成形用金型装置の実施例を図
面に基づいて詳述する。尚、上記従来と共通の構成個所
には同一の符号を付して説明する。EXAMPLES Hereinafter, examples of the blow molding mold apparatus according to the present invention will be described in detail based on the drawings. Note that the same reference numerals are given to the same components as in the above-mentioned conventional art.

第１図〜第４図は本発明の一実施例を示し、図中１は熱
可塑性樹脂を可塑化すると共に、パリソン２を押し出す
押出機、３は矩形状の下金型であって、この下金型３は
、上面４に長尺な蛇行状のキャビティ５が形成されてい
ると共に、上金型６が載置する壁部内に４つの小径な第
１ガイド孔７・・・と、キャビティ５を構成する壁部に
複数の小径な第２ガイド孔８・・−とが上下方向に沿っ
て貫通形成されている。1 to 4 show an embodiment of the present invention, in which 1 is an extruder that plasticizes thermoplastic resin and extrudes a parison 2; 3 is a rectangular lower mold; The lower mold 3 has a long meandering cavity 5 formed on the upper surface 4, and four small-diameter first guide holes 7 in the wall on which the upper mold 6 is placed, and a cavity 5. A plurality of small diameter second guide holes 8 .

また、下金型３の下部には、支持機構９が設けられてい
る。この支持機構９は、矩形板状のベース１０と、該ベ
ース１０の上面１０ａの４角に立設されて上記下金型３
の下面を固定支持する支柱部１１・・・と、上記第１．
第２ガイド孔７，８．＝内を上下方向に摺動する複数の
リターンビン１２及び支持ビン１３・・・とを備えてい
る。Further, a support mechanism 9 is provided at the lower part of the lower mold 3. This support mechanism 9 includes a rectangular plate-shaped base 10, and is erected at the four corners of the upper surface 10a of the base 10 to support the lower mold 3.
The pillar portion 11 fixedly supports the lower surface of the first.
Second guide holes 7, 8. It is provided with a plurality of return bins 12 and support bins 13 that slide in the vertical direction.

このリターンビン１２と支持ビン１３・・・は、下端部
が支持板１４の上面に植設されていると共に、該支持板
１４下面とベース１０の上面との間に弾着された複数の
コイルスプリング１５・・・によって上方に付勢されて
いる。そして、第１ガイド孔７・・・内を挿通する４本
のリターンビン１２・・・は、第２ガイド孔８・・・内
を挿通する複数の支持ピン１３・・・よりも、長尺に設
定されている。また、リターンビン１２・・・と支持ピ
ン１３・・・の先端部１２ａ。The return bins 12 and the support bins 13 have their lower ends planted on the upper surface of the support plate 14, and a plurality of coils are landed between the lower surface of the support plate 14 and the upper surface of the base 10. It is urged upward by springs 15... The four return bins 12 passing through the first guide hole 7 are longer than the plurality of support pins 13 passing through the second guide hole 8. is set to . Also, the tip portions 12a of the return bins 12... and the support pins 13...

１３ａ・・・は、上記コイルスプリング１５・・・によ
る上方付勢時には下金型３の上面４及びキャピテイ５の
底部内周面５ｂから突出しており、この先端部１２ａ、
１３ａ・・・突出量は均一に設定されている。尚、支持
ピン１３・・・の各先端部１３ａの先端縁は、上記底部
内周面５ｃと同一曲率の略テーパ状に形成されている。13a protrudes from the upper surface 4 of the lower mold 3 and the bottom inner circumferential surface 5b of the cavity 5 when the coil springs 15 are biased upward, and these tip portions 12a,
13a...The amount of protrusion is set uniformly. Note that the tip edge of each tip portion 13a of the support pins 13... is formed into a substantially tapered shape having the same curvature as the bottom inner circumferential surface 5c.

したがって、本実施例によれば例えば吸気ダクトの成形
時において、まず第１図に示すように押出機ｌで円筒状
のパリソン２を下金型３のキャビティ５内に押し出すと
、この時点ではリターンビン１２と支持ピン１３・・・
はその先端部１２ａ、１３ａ・・・がコイルスプリング
１５・・・のばね力で各ガイド孔７，８・・・から下金
型３の上面４及びキャピテイ５の底部内周面５ｃから夫
々突出しているため、パリソン２の下端部２ａが第２図
に示すように支持ピン１３・・・の先端部１３ａ・・・
上縁で点接触状態に支持される。したがって、パリソン
２は、キャビティ５の底部内周面５ｃとの直接的な面接
触が回避され、該底部内周面５ｃによる吸熱作用が確実
に防止される。このため、パリソン２下端部位２ａの先
行冷却による固化を十分に防止できる。次に、第３図に
示すようにパリソン２の押し出し作業が完了し、下金型
３の上端面４ａに止金型６を徐々に下降させて載置する
と、該上金型６の下面がリターンビン１２・・・の先端
部１２ａを下方へ押圧する。このため、該リターンビン
１２・・・と支持ピン１３・・・は、コイルスプリング
１５・・・のばね力に抗して各ガイド孔７，８・・・内
を同時に徐々に後退し、止金型６が完全に載置されて型
締めされると、各先端部１２ａ、１３ａ・・・が各ガイ
ド孔７，８・・−内に完全に没入する。次に、固化前の
パリソン２内に空気を吹き込んで膨張させ、両全型３，
６の各キャピテイ５内壁面５ｂ、　　６ａに押し付けて
冷却固化すれば、東４図に示すように全周の肉厚が均一
な樹脂成形体１６が得られる。また、支持ピン１３・・
・の先端縁は、第２ガイド孔８・−内に没入すると、底
部内周面５ｃと同一平面となるため、成形品の外周面に
凹凸等が発生せず、滑らかな外周面となる。Therefore, according to this embodiment, when molding an air intake duct, for example, as shown in FIG. Bin 12 and support pin 13...
The tips 12a, 13a, . . . project from the upper surface 4 of the lower mold 3 and the bottom inner peripheral surface 5c of the cavity 5 from the guide holes 7, 8, . . . by the spring force of the coil springs 15, respectively. As shown in FIG.
Supported in point contact at the upper edge. Therefore, the parison 2 is prevented from coming into direct surface contact with the bottom inner circumferential surface 5c of the cavity 5, and the heat absorption effect by the bottom inner circumferential surface 5c is reliably prevented. Therefore, it is possible to sufficiently prevent the lower end portion 2a of the parison 2 from solidifying due to preliminary cooling. Next, as shown in FIG. 3, when the extrusion work of the parison 2 is completed and the stopper die 6 is gradually lowered and placed on the upper end surface 4a of the lower die 3, the lower surface of the upper die 6 is The tips 12a of the return bins 12... are pressed downward. Therefore, the return bins 12... and the support pins 13... resist the spring force of the coil springs 15... and gradually move back inside the respective guide holes 7, 8... and stop. When the mold 6 is completely placed and clamped, the tips 12a, 13a, . . . completely enter the guide holes 7, 8, . Next, air is blown into the parison 2 before solidification to expand it, and both molds 3,
By pressing it against the inner wall surfaces 5b and 6a of each of the cavities 5 and cooling and solidifying it, a resin molded body 16 having a uniform thickness around the entire circumference can be obtained as shown in Fig. 4. In addition, support pin 13...
When the leading edge of the molded product is inserted into the second guide hole 8.-, it becomes flush with the bottom inner circumferential surface 5c, so that the outer circumferential surface of the molded product has no irregularities, and the outer circumferential surface is smooth.

尚、本発明は、上記実施例の支持機構の構成に限定され
るものではな（、例えば支持ピンをコイルスプリングで
はなく油圧により出没移動させることも可能である。ま
た、支持ピンの先端部に熱伝導率の低い部材を設ければ
、上記先行冷却防止効果が一層助長される。Note that the present invention is not limited to the configuration of the support mechanism of the above embodiment (for example, it is possible to move the support pin in and out using hydraulic pressure instead of a coil spring. If a member with low thermal conductivity is provided, the above-mentioned effect of preventing advance cooling is further promoted.

発明の効果 以上の説明で明らかなように、本発明によれば、とりわ
け下金型の内部上下方向にガイド孔を貫通形成すると共
に、下金型の下部に、上記ガイド孔を介してキャビティ
内へ下方から適宜出没してパリソンの下端部位を支持す
る支持機構を設けたため、ブロー成形時におけるパリソ
ン下端部位の先行冷却による固化が確実に防止される。Effects of the Invention As is clear from the above description, according to the present invention, a guide hole is particularly formed vertically inside the lower mold, and a guide hole is formed in the lower part of the lower mold through the guide hole. Since the support mechanism is provided to support the lower end portion of the parison by appropriately moving in and out from below, it is possible to reliably prevent the lower end portion of the parison from solidifying due to preliminary cooling during blow molding.

この結果、成形品全体の肉厚を均一にすることが可能に
なり、品質の向上と外観上の美感が向上する。As a result, it becomes possible to make the wall thickness of the entire molded product uniform, resulting in improved quality and aesthetic appearance.

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

第１図は本発明の一実施例を示す装置全体の斜視図、第
２図は第１図の１−１線断面図、第３図は本実施例の作
用を示す装置全体の斜視図、第４図は第３図のＩＩＩ−
ＩＩＩ線断面図、第５図は従来の装置を示す全体斜視図
、第６図は第５図の■−ｖ線断面図である。 ２・・・パリソン、２ａ・・・下端部位、３・・・下金
型、４・・−上面、５・・・キャビティ、５Ｃ・・・底
部内周面、６・・・上金型、７，８・・・第１．第２ガ
イド孔、９・・・支持機構、１２・・・リターンピン、
１３・−・支持ビン。 外３名FIG. 1 is a perspective view of the entire device showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line 1-1 in FIG. 1, and FIG. 3 is a perspective view of the entire device showing the operation of this embodiment. Figure 4 shows III- in Figure 3.
FIG. 5 is an overall perspective view showing the conventional device, and FIG. 6 is a sectional view taken along the line -V in FIG. 5. 2... Parison, 2a... Lower end portion, 3... Lower mold, 4... Upper surface, 5... Cavity, 5C... Bottom inner peripheral surface, 6... Upper mold, 7, 8... 1st. 2nd guide hole, 9... Support mechanism, 12... Return pin,
13.--Support bin. 3 other people

Claims (1)

【特許請求の範囲】[Claims] （１）下金型の上面に形成されたキャビティ内にパリソ
ンを充填すると共に、上記下金型の上部に上金型を載置
して樹脂成形体を成形するブロー成形用金型装置におい
て、上記下金型の内部上下方向にガイド孔を貫通形成す
ると共に、下金型の下部に、上記ガイド孔を介してキャ
ビティ内へ下方から適宜出没し上記パリソンの下端部位
を支持する支持機構を設けたことを特徴とするブロー成
形用金型装置。(1) In a blow molding mold device that fills a parison into a cavity formed on the upper surface of a lower mold, and places an upper mold on top of the lower mold to mold a resin molded article, A guide hole is formed vertically through the inside of the lower mold, and a support mechanism is provided in the lower part of the lower mold to appropriately move in and out of the cavity from below through the guide hole to support the lower end portion of the parison. A blow molding mold device characterized by:
JP1079504A 1989-03-30 1989-03-30 Mold device for blow molding Pending JPH02255320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1079504A JPH02255320A (en) 1989-03-30 1989-03-30 Mold device for blow molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1079504A JPH02255320A (en) 1989-03-30 1989-03-30 Mold device for blow molding

Publications (1)

Publication Number Publication Date
JPH02255320A true JPH02255320A (en) 1990-10-16

Family

ID=13691768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1079504A Pending JPH02255320A (en) 1989-03-30 1989-03-30 Mold device for blow molding

Country Status (1)

Country Link
JP (1) JPH02255320A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0818300A1 (en) * 1996-07-10 1998-01-14 Solvay Automotive GmbH Method and apparatus to avoid premature cooling of a preform due to placing this preform in a blow mould cavity
FR2980997A1 (en) * 2011-10-10 2013-04-12 Tube Fixture METHOD FOR MANUFACTURING A MOLD FOR PRODUCING, THERMALLY FORMING, PLASTIC TUBES, AND MOLD PRODUCED BY THIS METHOD OF MANUFACTURE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0818300A1 (en) * 1996-07-10 1998-01-14 Solvay Automotive GmbH Method and apparatus to avoid premature cooling of a preform due to placing this preform in a blow mould cavity
FR2980997A1 (en) * 2011-10-10 2013-04-12 Tube Fixture METHOD FOR MANUFACTURING A MOLD FOR PRODUCING, THERMALLY FORMING, PLASTIC TUBES, AND MOLD PRODUCED BY THIS METHOD OF MANUFACTURE
WO2013054008A1 (en) * 2011-10-10 2013-04-18 Tube Fixture Method for manufacturing a mold for hot-forming plastic tubes, and mold produced by means of said manufacturing method

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