JPH071563A - Blow mold for hollow double-wall molded product and blow molding apparatus using the mold - Google Patents
Blow mold for hollow double-wall molded product and blow molding apparatus using the moldInfo
- Publication number
- JPH071563A JPH071563A JP5173765A JP17376593A JPH071563A JP H071563 A JPH071563 A JP H071563A JP 5173765 A JP5173765 A JP 5173765A JP 17376593 A JP17376593 A JP 17376593A JP H071563 A JPH071563 A JP H071563A
- Authority
- JP
- Japan
- Prior art keywords
- peripheral wall
- pair
- mold
- wall members
- female
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000071 blow moulding Methods 0.000 title claims description 24
- 230000002093 peripheral effect Effects 0.000 claims abstract description 86
- 239000000463 material Substances 0.000 abstract description 2
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000010413 gardening Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
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
- B29C49/0031—Making articles having hollow walls
-
- 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
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/48185—Moulds with more than one separate mould cavity
- B29C49/4819—Moulds with more than one separate mould cavity having different sizes or shapes of the mould cavities
-
- 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
- B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
- B29C2049/4807—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity by movable mould parts in the mould halves
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、相互離反した一対の
雌雄金型間へパリソンを供給し、これら雄雌の金型を接
近して二つの雄雌金型間にパリソンを挟持し閉じ込め、
次いでパリソンを膨脹させて、中空二重壁成形品を吹き
込み成形する際に用いられる金型及びこの金型を使用す
るブロー成形装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention supplies a parison between a pair of male and female molds that are separated from each other, and closes the male and female molds to sandwich and confine the parison between the two male and female molds.
Next, the present invention relates to a mold used for expanding a parison to blow-mold a hollow double-wall molded product, and a blow molding device using the mold.
【０００２】[0002]
【従来の技術】この種の中空二重壁成形品の製造方法
は、この出願以前に種々開発されており、特公昭４６−
１４１５３号、特公昭４９−１８７４８号及び特公昭５
１−１３４９５号の各公報に代表例が記載されている。
一方、その金型に関する出願は現出願時においては数例
にとどまり、特公昭４９−４１１１号及び本件出願人会
社名義の出願である特開昭６０−６７１３０号がある程
度である。2. Description of the Related Art Various methods for producing hollow double-wall molded articles of this type have been developed before this application, and are described in Japanese Patent Publication No.
14153, Japanese Patent Publication No. 49-18748 and Japanese Patent Publication No. 5
Representative examples are described in each publication of No. 1-134995.
On the other hand, there are only a few applications for the mold at the time of the present application, and there are only a few Japanese Patent Publication Nos. 49-4111 and 60-67130 in the name of the applicant company.
【０００３】[0003]
【発明が解決しようとする課題】前記の本件出願人名義
の出願においては、雌金型の周壁部材と底面部材を分割
し、その周壁部材を底部材に対して枢軸周りに揺動し、
箱型の雌金型を構成するため、その構造が複雑である。
また前記特公昭４９−４１１１号の金型はヒンジを共有
した身と蓋を有する製品の製造に限られ、その凡用性に
乏しい欠点があり、かつそのヒンジ部が薄肉化するおそ
れがある。この発明は、前述の先行技術の欠点を改善す
るために、前記周壁部材の駆動機構を単純化し金型全体
を小型化し、開いている金型間へのパリソンの供給を支
障なく行い、成形品の隅角部の強度を維持すると共に、
成形品の材料歩留りを良好にする中空二重壁成形品吹き
込み成形用金型及びこの金型を使用するブロー成形装置
を市場に提供することを目的とする。In the above-mentioned application in the name of the applicant, the peripheral wall member and the bottom member of the female die are divided, and the peripheral wall member is swung around the pivot with respect to the bottom member.
Since the box-shaped female mold is constructed, its structure is complicated.
Further, the mold of JP-B-49-4111 is limited to the manufacture of a product having a body and a lid that share a hinge, and has a drawback of poor versatility, and the hinge portion may be thin. In order to improve the above-mentioned drawbacks of the prior art, the present invention simplifies the driving mechanism of the peripheral wall member, downsizes the entire mold, and supplies the parison between the open molds without any hindrance. While maintaining the strength of the corners of
An object of the present invention is to provide a mold for blow molding a hollow double-wall molded product that improves the material yield of a molded product, and a blow molding device that uses this mold to the market.
【０００４】[0004]
【課題を達成するための手段】前記課題を達成するため
に、特定発明は相接近離間する雄雌の金型間に供給され
たパリソンを挾持して、この挾持したパリソン内に吹き
込まれるエア圧によりパリソンを雄雌金型内面に添わせ
て同一方向へ膨出成形し固化させて内外二重壁よりなる
物品を製造する一対の雄雌金型のうち、箱型の雌金型
は、一対２組計四個の周壁部材と底面部材からなり、こ
れら周壁部材のうち、少なくとも一方の組の上下一対の
周壁部材はこの底面部材に対して、斜め外側底方向に退
避した位置と、底面部材及び隣接する他方の組の左右一
対の周壁部材と相接近当接し所期雌金型形状を形成する
位置との間で往復斜め直線動可能に装備されていること
を特徴とする中空二重壁成形品吹込み成形用金型として
ある。前記他方の組の左右一対の周壁部材は前記底面部
材に対して平行で、かつ外側に退避した位置と、底面部
材及び隣接する他方の組の周壁部材と相接近当接し所期
雌金型形状を形成する位置との間で往復直線動可能に装
備されていることが好ましい。前記一対２組計四個の周
壁部材全てがこの底面部材に対して、斜め外側底方向に
退避した位置と、底面部材及び隣接する他方の組の周壁
部材と相接近当接し所期雌金型形状を形成する位置との
間で往復斜め直線動可能に装備されていることが望まし
い。前記課題を達成するために、関連発明は前記雌雄金
型を、型締装置の一対の受盤に装着し、少なくとも前記
上下一対の周壁部材を往復斜め直線動させる駆動装置
が、雌金型の底部材と対応する周壁部材との間に介設さ
れて成ることを特徴とするブロー成形装置としてある。In order to achieve the above-mentioned object, a specific invention is to hold a parison supplied between male and female dies that are close to and separate from each other, and to press air pressure blown into the sandwiched parison. The parison is attached to the inner surface of the male and female dies by bulging and solidifying in the same direction to produce an article consisting of inner and outer double walls. Two sets of four peripheral wall members and a bottom member are formed. Of these peripheral wall members, at least one pair of upper and lower peripheral wall members has a position retracted obliquely outward to the bottom and a bottom member. And a double-walled hollow wall which is reciprocally slidable linearly between a pair of left and right peripheral wall members of the other pair adjacent to each other and a position where the left and right peripheral wall members come into close contact with each other to form a desired female mold shape. It is a mold for blow molding of molded products. The pair of left and right peripheral wall members of the other set are parallel to the bottom member and are retracted to the outside, and the bottom member and the adjacent peripheral wall member of the other set are brought into close contact with each other to form the desired female mold shape. It is preferable to be equipped so as to be capable of reciprocating rectilinear movement with respect to the position forming the. All of the four pair of peripheral wall members, one pair and two sets, are brought into close contact with the bottom surface member and the bottom wall member and the peripheral wall member of the other pair adjacent to the bottom surface member in close contact with each other. It is desirable to be equipped so as to be capable of reciprocating oblique linear movement between the position forming the shape. In order to achieve the above object, in the related invention, a driving device in which the male and female molds are mounted on a pair of receiving plates of a mold clamping device and at least the pair of upper and lower peripheral wall members reciprocate obliquely linearly is used. A blow molding device characterized by being interposed between a bottom member and a corresponding peripheral wall member.
【０００５】[0005]
【作用】前記請求項１、請求項２に記載された発明であ
る金型の作用を請求項４に記載された発明であるブロー
成形装置の作用と共に説明する。この金型をブロー成形
装置に取付けるには、水平方向又は傾斜方向において相
互接近離間するブロー成形装置における左右一対の平行
な金型取付受盤に、雌雄金型の内面成形部材の合わせ面
が相対向し平行となる状態で、前記雌金型と雄金型をそ
れぞれ取付ける。次いで一対２組の周壁部材のうち、一
方の組の上下一対の周壁部材を駆動装置によって移動さ
せて底面部材に対して、斜め外側底方向に退避した位置
にセットする。更に他方の組の左右一対の周壁部材は前
記底面部材に対して平行で、かつ外側に退避した位置に
セットする。即ち、上下の周壁部材は雌金型の深さが浅
くなる方向に斜め外側に後退し、左右の周壁部材はブロ
ー成形機のダイ・ヘッドから吐出されるパリソン外周面
より外側に退避した状態となる。The operation of the mold according to the invention described in claims 1 and 2 will be described together with the operation of the blow molding apparatus according to the invention described in claim 4. To attach this mold to a blow molding device, the mating surfaces of the inner surface molding members of the male and female molds are relatively opposed to a pair of left and right parallel mold mounting receiving plates of the blow molding device that are close to and separated from each other in the horizontal direction or the tilt direction. The female mold and the male mold are mounted in the state of being parallel to each other. Next, of the pair of peripheral wall members of one pair, one pair of upper and lower peripheral wall members is moved by the driving device to be set at a position retracted obliquely outward to the bottom with respect to the bottom member. Further, the other pair of left and right peripheral wall members is set in a position parallel to the bottom member and retracted to the outside. That is, the upper and lower peripheral wall members recede obliquely outward in the direction in which the depth of the female mold becomes shallow, and the left and right peripheral wall members are retracted outside the parison outer surface discharged from the die head of the blow molding machine. Become.
【０００６】次いで、ブロー成形機のダイ・ヘッドから
融軟状態のパリソンを相互離反している一対の雌雄金型
間に供給する。少なくともパリソンの先端をパリソンピ
ンチで挟持して閉塞した状態とし、パリソン内の空気圧
をパリソン吐出口の内側に設けた給排気ノズルを用いて
パリソンを予備膨脹させる。なお、パリソンの後端も一
旦パリソンピンチで閉塞した後、密封されたパリソンに
別個に設けた給排気注射針を刺して、パリソンを予備膨
脹させる方式でも良い。パリソンピンチで挟持するタイ
ミングは前述と異なり、パリソンを扁平円筒状に必要長
さ前記雌雄の金型間に供給後、上下２組のパリソンピン
チで前記パリソンの上下を同時的に閉塞する方法及び装
置を採用することもある。前記パリソンが雌雄の金型間
に供給される間、前記パリソンは雌金型の左右周壁部材
間を通り、上下の後退した周壁部材の開口縁とも殆ど接
触することなく供給される。Then, the parison in the melted state is supplied from the die head of the blow molding machine between the pair of male and female dies which are separated from each other. At least the front end of the parison is clamped by a parison pinch to be closed, and the air pressure inside the parison is pre-expanded using the air supply / exhaust nozzle provided inside the parison discharge port. The rear end of the parison may also be temporarily closed with a parison pinch, and then the sealed parison may be pierced with a separately provided air supply / exhaust injection needle to pre-expand the parison. The timing for pinching with the parison pinch is different from the above, and after supplying the parison in a flat cylindrical shape between the male and female molds of the required length, a method and apparatus for simultaneously closing the top and bottom of the parison with two sets of parison pinches. May be adopted. While the parison is supplied between the male and female molds, the parison passes between the left and right peripheral wall members of the female mold and is supplied with almost no contact with the opening edges of the vertically retracted peripheral wall members.
【０００７】次に前記少なくとも一方の受盤を移動させ
て前記雌雄の金型を相接近させて、前記雄金型の突出面
と雌金型の底面部材内面とによって、前記パリソンが軽
く挟持されるところで、一旦前記受盤及びこれと一体の
雌雄金型の接近を止める。次に、パリソン内圧を調整
（通常は排気）しながら前記駆動装置の作動により前記
斜め外側底方向に退避した位置にある上下一対の周壁部
材をゆっくりと斜め内方に前進させると共に、左右一対
の周壁部材をゆっくりと斜め内方に前進させる。このよ
うにすると、雌雄金型間のパリソンは上下左右の４つの
周壁部材の内面により内方へ押されて、次第に雄金型の
外周面方向に内外二重壁を維持したまま変形し、次第に
雄金型の外周面にも接触した状態になる。次に前記一対
２組の周壁部材を完全に底面部材及び隣接する他方の組
の周壁部材と相接近当接し所期雌金型形状を形成する位
置、即ち使用位置にセットする。次に更にパリソン内圧
を調整しながら一対の受盤を更に接近させ雌雄の金型の
合わせ面を相互に密着させ、これら金型のキャビティ内
に一応二重壁構造となったパリソンを完全に封入する。
而して、パリソン内に例えば外部より空気注入針を刺し
て若しくは前述の注射針状の給排ノズルを利用して圧搾
空気を送り込み、パリソンを雌雄金型で形成されるキャ
ビティ形状に膨脹させるか、或いはパリソンと金型間の
空気を真空ポンプの作動により雌又は雌雄金型双方に設
けてある空気吸引口から外部へ排気し、パリソンを雌雄
金型の内面形状に倣い変形する。Next, the at least one receiving plate is moved to bring the male and female dies closer to each other, and the parison is lightly held by the projecting surface of the male die and the inner surface of the bottom member of the female die. At this point, the approach of the receiving plate and the male and female molds integrated with the receiving plate are once stopped. Next, while adjusting (usually exhausting) the internal pressure of the parison, the pair of upper and lower peripheral wall members at the positions retracted in the diagonally outer bottom direction by the operation of the drive device are slowly advanced inwardly diagonally, The peripheral wall member is slowly advanced obliquely inward. By doing so, the parison between the male and female molds is pushed inward by the inner surfaces of the four peripheral wall members, which are vertically and horizontally, and gradually deforms in the outer peripheral surface direction of the male mold while maintaining the inner and outer double walls, and gradually. The outer peripheral surface of the male mold is also in contact with it. Next, the pair of peripheral wall members are set at a position where they completely come into close contact with the bottom member and the adjacent peripheral wall member of the other pair to form the desired female mold shape, that is, a use position. Next, while adjusting the internal pressure of the parison, the pair of receiving plates are moved closer to each other to bring the mating surfaces of the male and female molds into close contact with each other, and the parison having a double wall structure is completely enclosed in the cavity of these molds. To do.
Whether the parison is expanded into the cavity shape formed by the male and female dies by, for example, piercing an air injection needle from the outside into the parison or sending compressed air using the above-mentioned injection needle-shaped supply / discharge nozzle. Alternatively, the air between the parison and the mold is exhausted to the outside from the air suction ports provided in both the female and male molds by the operation of the vacuum pump, and the parison is deformed according to the inner surface shape of the male and female molds.
【０００８】次に一対の雌雄金型内部に形成した冷却水
通路を流れる冷却水により雌雄の金型を冷却し、これに
伴ってパリソンを冷却固化させ、所望形状の中空二重壁
成形品（例えば、鮮魚などのコンテナ、園芸用プラン
タ、缶などの収納容器、レジャー用のクールボックス、
ダイニングキッチンの床下収納庫）を製造する。この成
形品を一対の雌雄金型間から取り出すには前記製造の手
順と逆操作で雌雄の金型を離反後、一対２組の周壁部材
を外側に退避させる。請求項３に記載された発明におい
ては、全ての周壁部材は底面部材に対して、斜め外側底
方向に退避した位置から底面部材及び隣接する周壁部材
と相接近当接し所期雌金型形状を形成する位置、即ち使
用位置に往復斜め直線動されセットされる。それ以後の
作用は前記のものと同様であり、所望の中空二重壁成形
品をブロー成形する。Next, the male and female dies are cooled by cooling water flowing through the cooling water passages formed inside the pair of male and female dies, and the parison is cooled and solidified accordingly, and a hollow double-wall molded product of a desired shape ( For example, containers for fresh fish, planters for gardening, storage containers for cans, cool boxes for leisure,
Manufactures an underfloor storage room for a dining kitchen. In order to take out this molded product from between the pair of male and female dies, the male and female dies are separated from each other by the reverse operation of the above-described manufacturing procedure, and then the pair of peripheral wall members are retracted to the outside. In the invention described in claim 3, all the peripheral wall members are brought into close contact with the bottom surface member and the adjacent peripheral wall member from the position retracted in the diagonally outer bottom direction with respect to the bottom surface member to form the desired female mold shape. The product is set by reciprocating diagonal linear movement to a forming position, that is, a use position. The operation thereafter is the same as that described above, and a desired hollow double-wall molded product is blow-molded.
【０００９】[0009]
実施例１ 請求項１、請求項２に記載された発明である金型の代表
的な実施例を請求項４に記載された発明であるブロー成
形装置の代表的な実施例と共に説明する。図１におい
て、１０は箱型の雌金型、２０は雄金型であり、それぞ
れブロー成形装置４０の型締装置の一対の受盤３０ａ、
３０ｂに固定されるものである。前記雌金型１０は、単
一の底面部材１１と一対２組の四つの周壁部材１２ａ、
１２ｂ、１２ｃ及び１２ｄとよりなり、前記一対２組の
四つの周壁部材１２ａ、１２ｂ、１２ｃ及び１２ｄのう
ち、上下一対の周壁部材１２ａ、１２ｂのみが前記底面
部材１１に対して、斜め外側底方向に退避する位置（図
１の実線位置）と、この底面部材１１及び左右一対の周
壁部材１２ｃ、１２ｄと相互接近当接し所期雌金型形状
を形成する位置（図１の２点鎖線位置）との間で往復斜
め直線動可能に装備されている。残りの左右一対の周壁
部材１２ｃ、１２ｄは前記底面部材１１に対して平行
で、かつ外側に退避した位置と、底面部材及び隣接する
他方の組の周壁部材と相接近当接し所期雌金型形状を形
成する位置との間で往復直線動可能に装備されている
（図２参照）。前記上下一対の周壁部材１２ａ、１２ｂ
の前記往復斜め直線動は、この上、下の周壁部材１２
ａ、１２ｂと底面部材１１との間に装備してある油圧式
駆動装置（油圧シリンダー装置）１４ａ、１４ｂによっ
て行われる。同様に左右一対の周壁部材１２ｃ、１２ｄ
の往復直線動は、この左右の周壁部材１２ｃ、１２ｄと
底部材１１との間に装備した油圧駆動装置（油圧シリン
ダ装置）１４ｃ、１４ｄにより行われる。 この際、前
記底部材１１の上下部分は、雌金型１０の開口縁方向に
水平に張り出し、この雌金型１０の深さ方向に３分の１
乃至３分の２起立した張出壁部１１ａ、１１ｂに形成し
てある（図１参照）。前記上下一対の周壁部材１２ａ、
１２ｂは、前記底面部材１１の張出壁部１１ａ、１１ｂ
の開口側に前記使用位置において連なり、この張出壁部
１１ａ、１１ｂと合わせて雌金型１０の上下周壁を形成
する寸法としてある。Example 1 A representative example of a mold according to the invention described in claims 1 and 2 will be described together with a representative example of a blow molding apparatus according to the invention described in claim 4. In FIG. 1, reference numeral 10 is a box-shaped female mold, and 20 is a male mold, and each of them is a pair of receiving plates 30a of the mold clamping device of the blow molding device 40.
It is fixed to 30b. The female die 10 includes a single bottom member 11 and four peripheral wall members 12a in pairs.
Of the four peripheral wall members 12a, 12b, 12c, and 12d of one pair and two pairs, only the pair of upper and lower peripheral wall members 12a and 12b are slanted toward the outer bottom with respect to the bottom member 11. 1 (the position indicated by the solid line in FIG. 1) and the position at which the bottom face member 11 and the pair of left and right peripheral wall members 12c, 12d come into close contact with each other to form the desired female mold shape (the position indicated by the two-dot chain line in FIG. 1) It is equipped so that it can move back and forth diagonally between and. The other pair of left and right peripheral wall members 12c and 12d are parallel to the bottom member 11 and are retracted to the outside, and the bottom member and the other adjacent pair of peripheral wall members are brought into close contact with each other. It is equipped so that it can reciprocate linearly with respect to the position where the shape is formed (see FIG. 2). The pair of upper and lower peripheral wall members 12a, 12b
The reciprocating diagonal linear movement of the upper and lower peripheral wall members 12
It is performed by hydraulic drive devices (hydraulic cylinder devices) 14a and 14b provided between a and 12b and the bottom member 11. Similarly, a pair of left and right peripheral wall members 12c, 12d
The reciprocating linear movement is performed by hydraulic drive devices (hydraulic cylinder devices) 14c and 14d provided between the left and right peripheral wall members 12c and 12d and the bottom member 11. At this time, the upper and lower parts of the bottom member 11 project horizontally in the direction of the opening edge of the female die 10 and one third in the depth direction of the female die 10.
It is formed on the overhanging wall portions 11a and 11b that rise up to two-thirds (see FIG. 1). The pair of upper and lower peripheral wall members 12a,
Reference numeral 12b denotes the overhanging wall portions 11a and 11b of the bottom member 11.
The dimensions are such that the upper and lower peripheral walls of the female mold 10 are formed so as to be connected to the opening side of the above at the use position and to be combined with the projecting wall portions 11a and 11b.
【００１０】また、前記左右一対の周壁部材１２ｃ及び
１２ｄの往復直線動は、この左、右の周壁部材１２ｃ、
１２ｄと底面部材１１との間に装備してある油圧式駆動
装置（油圧シリンダー装置）１４ｃ及び１４ｄによって
行われる。通常雄金型２０には、パリソンに刺し込む注
射針型の空気給排ノズル（図示せず）とブロー成形用の
注入針（図示せず）の双方若しくは空気給排ノズル（図
示せず）のみが装備してある。前記はブロー成形装置４
０における一対のパリソンピンチ（図示せず）は、公知
のもの同様に押し出されたパリソンＰの一部を横断方向
に扁平に潰して融着するために配備されている。Further, the reciprocating linear movement of the pair of left and right peripheral wall members 12c and 12d is caused by the left and right peripheral wall members 12c,
It is performed by hydraulic drive devices (hydraulic cylinder devices) 14c and 14d provided between the lower surface member 12d and the bottom member 11. Normally, the male die 20 has both an injection needle type air supply / discharge nozzle (not shown) for inserting into a parison and an injection needle (not shown) for blow molding or only an air supply / discharge nozzle (not shown). Is equipped with. The blow molding device 4
A pair of parison pinches (not shown) at 0 are provided for flatly crushing a part of the extruded parison P in the transverse direction and fusion-bonding the parison P similarly to the known one.
【００１１】実施例２ この実施例（図３参照）は請求項３に記載された発明で
ある金型の代表的な実施例であり、実施例１と異なる構
造は次のとおりである。即ち、一対２組計四個の周壁部
材１２ｅ、１２ｆ、１２ｇ及び１２ｈはそれぞれ前記底
面部材１１に対して、底面部材１１及び隣接する他方の
組の周壁部材と相接近当接して単一の箱型である初期雌
金型形状を形成する位置と、斜め外側底方向に退避する
位置との間で往復斜め直線動可能に装備されている。こ
れら各周壁部材１２ｅ、１２ｆ、１２ｇ及び１２ｈの前
記往復斜め直線動は、これら周壁部材１２ｅ、１２ｆ、
１２ｇ及び１２ｈと底面部材１１との間に装備してある
油圧式駆動装置（油圧シリンダー装置）１４ｇ及び１４
ｈ（上下周壁部材用の油圧式駆動装置は図示せず）によ
って行われる。そのほか、実施例と１同一の符号のもの
は同一の構成、作用を為す。前記各実施例の作用は対応
請求項に記載された発明の作用と同じためここでの説明
を省略する。Embodiment 2 This embodiment (see FIG. 3) is a typical embodiment of the mold according to the invention described in claim 3, and the structure different from that of Embodiment 1 is as follows. That is, a total of four peripheral wall members 12e, 12f, 12g, and 12h in a pair of two are brought into close contact with the bottom member 11 and the other adjacent peripheral wall member of the other set to form a single box. It is equipped so as to be capable of reciprocating slanting linear movement between a position where an initial female die shape that is a mold is formed and a position where it retreats in the slanting outer bottom direction. The reciprocating diagonal linear movement of each of the peripheral wall members 12e, 12f, 12g, and 12h causes the peripheral wall members 12e, 12f,
Hydraulic drive device (hydraulic cylinder device) 14g and 14 provided between 12g and 12h and the bottom member 11
h (hydraulic drive for upper and lower peripheral wall members not shown). In addition, the same reference numerals as in the first embodiment have the same configuration and operation. The operation of each of the above-described embodiments is the same as the operation of the invention described in the corresponding claim, and therefore the description thereof is omitted here.
【００１２】[0012]
【発明の効果】請求項１に記載された発明では雌雄金型
のうちの殊に雌金型においては、底面部材に対して、前
記少なくとも一方の組の上下一対の周壁部材は前記往復
斜め直線動可能に装備されているため、底面部材に対し
て平行に往復直線動する構造のものに比べて、小ストロ
ークでブロー成形機のダイ・ヘッドから吐出されるパリ
ソン外周面より外側に一対の上下周壁部材を斜め外側底
方向に退避でき、パリソンの供給を円滑、迅速に行うこ
とができる上、退避位置における前記上下一対の周壁部
材の底面部材周壁面からの出っ張り量を少なくし、金型
全体を小型化でき、その占有スペースを狭くでき、か
つ、前記往復斜め直線動する周壁部材の駆動機構を単純
化できる。請求項２に記載された発明においては、前記
他方の組の左右一対の周壁部材は前記底面部材に対して
平行で、かつ外側に退避した位置と、底面部材及び隣接
する他方の組の周壁部材と相接近当接し所期雌金型形状
を形成する位置との間で往復直線動可能に装備されてい
るため、請求項１記載の発明の効果に加えて、左右側壁
が垂直で全体周壁が半円状に湾曲している中空二重壁の
成形品の一例である園芸用プランター（図６参照）の長
手軸線を垂直としてブロー成形するに際して、前記上下
一対の周壁部材で、この園芸用プランターの前記左右側
壁を成形し、前記左右一対の周壁部材と底面部材とによ
りこの園芸用プランターの前記周壁を成形し、このよう
な中空二重壁の園芸用プランター成形品をその成形場所
に適した周壁部材により、支障なくブロー成形できる。According to the invention described in claim 1, in the female and male dies, particularly the female die, the at least one pair of upper and lower peripheral wall members is the reciprocating diagonal straight line with respect to the bottom member. Since it is movably equipped, a pair of upper and lower parts are placed outside the outer surface of the parison discharged from the die head of the blow molding machine with a small stroke, as compared with a structure that reciprocates linearly parallel to the bottom member. The peripheral wall member can be retracted obliquely to the outer bottom direction, the parison can be supplied smoothly and quickly, and the amount of protrusion from the peripheral wall surface of the bottom member of the pair of upper and lower peripheral wall members at the retracted position is reduced to reduce the entire mold. Can be downsized, its occupying space can be narrowed, and the driving mechanism of the peripheral wall member that makes the reciprocating oblique linear movement can be simplified. In the invention described in claim 2, the pair of left and right peripheral wall members of the other set are parallel to the bottom member, and are retracted to the outside, and the bottom member and the other peripheral wall member of the other adjacent set. Since it is equipped so as to be capable of reciprocating linear movement between a position in which it closely contacts and forms a desired female mold shape, in addition to the effect of the invention of claim 1, the left and right side walls are vertical and the entire peripheral wall is When the blow molding is performed with the longitudinal axis of the gardening planter (see FIG. 6), which is an example of a hollow double-walled curved semi-circular body, being vertical, the pair of upper and lower peripheral wall members are used to form the gardening planter. Of the left and right side walls, and the peripheral wall of the horticultural planter is molded by the pair of left and right peripheral wall members and the bottom member, and such a hollow double-walled horticultural planter molded product is suitable for the molding location. With the peripheral wall members, Not be able to blow molding.
【００１３】請求項３に記載された発明においては、前
記一対２組計四個の周壁部材全てがこの底面部材に対し
て、斜め外側底方向に退避した位置と、底面部材及び隣
接する他方の組の周壁部材と相接近当接し所期雌金型形
状を形成する位置との間で往復斜め直線動可能に装備さ
れている為、請求項１記載の発明の効果はより顕著とな
る。請求項４に記載された発明ではブロー成形装置は、
請求項１乃至請求項３に記載された発明である金型同様
の効果を発揮し、中空二重壁成形品殊に、深絞りでその
外壁が逆テーパとしてある中空二重壁成形品（図４参
照）、側面にアンダーカット部を有する中空二重成形品
（図５参照）、側面外側に模様が形成された中空二重壁
成形品又は前記形状の園芸用プランター（図６参照）を
簡単、確実にブロー成形できる。なお、前記実施例１に
おいては、前記底部材１１の部分は、雌金型１０の開口
縁方向に水平に張り出し、この雌金型１０の深さ方向に
３分の１乃至３分の２起立した張出壁部１１ａ、１１ｂ
に形成してあり、前記上下一対の周壁部材１２ａ、１２
ｂは、前記底面部材１１の張出壁部１１ａ、１１ｂの開
口側にその使用位置において連なり、この起立壁部１１
ａ、１１ｂと合わせて雌金型１０の上下周壁を形成する
寸法としてあるため、この上下一対の周壁部材１２ａ、
１２ｂのストロークをより小ストロークで充分に前記各
請求項記載の効果を発揮でき、製造サイクルを短縮化で
きる。In a third aspect of the invention, a total of four peripheral wall members of one pair and two sets are retracted in a diagonally outward bottom direction with respect to the bottom member, and the bottom member and the other adjacent one. The effect of the invention according to claim 1 becomes more remarkable because it is equipped so as to be capable of reciprocating oblique linear movement between a pair of peripheral wall members that come into close contact with each other and form a desired female mold shape. In the invention described in claim 4, the blow molding device is
A hollow double-wall molded product that exhibits the same effects as the mold according to the invention described in claims 1 to 3, and in particular, a hollow double-wall molded product whose outer wall has an inverse taper in deep drawing (Fig. 4), a hollow double molded product having an undercut portion on the side surface (see FIG. 5), a hollow double wall molded product having a pattern formed on the outer side surface, or a gardening planter having the above shape (see FIG. 6) is simple. It can be surely blow molded. In the first embodiment, the portion of the bottom member 11 projects horizontally in the direction of the opening edge of the female die 10 and stands up in the depth direction of the female die 10 by 1/3 to 2/3. Overhang wall portions 11a, 11b
Is formed on the upper and lower peripheral wall members 12a, 12
b is connected to the opening side of the overhanging wall portions 11a and 11b of the bottom member 11 at the use position, and the standing wall portion 11
Since the upper and lower peripheral walls of the female die 10 are formed together with a and 11b, the pair of upper and lower peripheral wall members 12a,
The stroke of 12b can be sufficiently exerted with a smaller stroke, and the manufacturing cycle can be shortened.
【図１】実施例１の一対の上下周壁部材を示す金型の概
略正面図である。FIG. 1 is a schematic front view of a mold showing a pair of upper and lower peripheral wall members of a first embodiment.
【図２】図１の金型における一対の左右周壁部材を示す
概略平面図である。FIG. 2 is a schematic plan view showing a pair of left and right peripheral wall members in the mold of FIG.
【図３】実施例２の金型における一対の左右周壁部材を
示す概略平面図である。FIG. 3 is a schematic plan view showing a pair of left and right peripheral wall members in a mold according to a second embodiment.
【図４】外壁が逆テーパとしてある中空二重壁成形品の
一部破断斜視図である。FIG. 4 is a partially cutaway perspective view of a hollow double-wall molded product whose outer wall has a reverse taper.
【図５】側面にアンダーカット部を有する中空二重壁成
形品の一部破断斜視図である。FIG. 5 is a partially cutaway perspective view of a hollow double-wall molded product having an undercut portion on a side surface.
【図６】実施例１の金型により成形される園芸用プラン
ターの一部破断正面図である。FIG. 6 is a partially cutaway front view of a horticultural planter molded by the mold of Example 1.
Ｐ パリソン １０ 雌金型 １１ 底面部材 １２ａ、１２ｂ、１２ｃ、１２ｄ、１２ｅ、１２ｆ、１
２ｇ、１２ｈ 周壁部材P parison 10 female die 11 bottom member 12a, 12b, 12c, 12d, 12e, 12f, 1
2g, 12h peripheral wall member
Claims (4)
パリソンを挾持して、この挾持したパリソン内に吹き込
まれるエア圧によりパリソンを雄雌金型内面に添わせて
同一方向へ膨出成形し固化させて内外二重壁よりなる物
品を製造する一対の雄雌金型のうち、箱型の雌金型は、
一対２組計四個の周壁部材と底面部材からなり、これら
周壁部材のうち、少なくとも一方の組の上下一対の周壁
部材はこの底面部材に対して、斜め外側底方向に退避し
た位置と、底面部材及び隣接する他方の組の左右一対の
周壁部材と相接近当接し所期雌金型形状を形成する位置
との間で往復斜め直線動可能に装備されていることを特
徴とする中空二重壁成形品吹込み成形用金型。1. A parison supplied between molds of males and females that are close to and separated from each other is sandwiched, and air pressure blown into the sandwiched parison causes the parison to be aligned with the inner surfaces of the male and female molds in the same direction. Among the pair of male and female molds for producing an article consisting of inner and outer double walls by bulging and solidifying, the box-shaped female mold is
It consists of a pair of two pairs of four peripheral wall members and a bottom member, and among these peripheral wall members, at least one pair of upper and lower peripheral wall members has a position retracted obliquely to the outer bottom direction with respect to this bottom member, and a bottom surface. A hollow double structure equipped with a member and a pair of adjacent left and right peripheral wall members of the other set adjacent to each other so as to be capable of reciprocating oblique linear movement between a position in close contact with each other and forming a desired female mold shape. Mold for blow molding of wall molded products.
部材に対して平行で、かつ外側に退避した位置と、底面
部材及び隣接する他方の組の周壁部材と相接近当接し所
期雌金型形状を形成する位置との間で往復直線動可能に
装備されていることを特徴とする請求項１記載の中空二
重壁成形品吹込み成形用金型。2. A pair of left and right peripheral wall members of the other set are parallel to the bottom member, and a position retracted to the outside and a close contact with the bottom member and the adjacent peripheral wall member of the other set. The hollow double-wall molded article blow molding die according to claim 1, which is equipped so as to reciprocate linearly with respect to a position where a female die shape is formed.
底面部材に対して、斜め外側底方向に退避した位置と、
底面部材及び隣接する他方の組の周壁部材と相接近当接
し所期雌金型形状を形成する位置との間で往復斜め直線
動可能に装備されていることを特徴とする請求項１記載
の中空二重壁成形品吹込み成形用金型。3. A position in which all of the four peripheral wall members, one pair and two pairs, are retracted obliquely to the outer bottom with respect to the bottom member,
2. The reciprocating diagonal linear movement is provided between the bottom member and the other adjacent pair of peripheral wall members that come into close contact with each other and form a desired female mold shape. Blow molding die for hollow double-wall molded products.
装着し、少なくとも前記上下一対の周壁部材を往復斜め
直線動させる駆動装置が、雌金型の底部材と対応する周
壁部材との間に介設されて成ることを特徴とする請求項
１乃至請求項３記載の金型を使用するブロー成形装置。4. A peripheral wall corresponding to a bottom member of a female mold, wherein a drive device, in which the male and female dies are mounted on a pair of receiving plates of a mold clamping device, and at least the pair of upper and lower peripheral wall members are linearly moved back and forth diagonally. A blow molding device using a mold according to any one of claims 1 to 3, wherein the blow molding device is provided between the member and the member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17376593A JP3419832B2 (en) | 1993-06-21 | 1993-06-21 | Mold for blow molding of hollow double-walled molded product and blow molding apparatus using this mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17376593A JP3419832B2 (en) | 1993-06-21 | 1993-06-21 | Mold for blow molding of hollow double-walled molded product and blow molding apparatus using this mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH071563A true JPH071563A (en) | 1995-01-06 |
| JP3419832B2 JP3419832B2 (en) | 2003-06-23 |
Family
ID=15966734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17376593A Expired - Lifetime JP3419832B2 (en) | 1993-06-21 | 1993-06-21 | Mold for blow molding of hollow double-walled molded product and blow molding apparatus using this mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3419832B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109676903A (en) * | 2019-01-08 | 2019-04-26 | 山东福润橡塑科技有限公司 | A kind of blow moulding machine folding mould device |
-
1993
- 1993-06-21 JP JP17376593A patent/JP3419832B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109676903A (en) * | 2019-01-08 | 2019-04-26 | 山东福润橡塑科技有限公司 | A kind of blow moulding machine folding mould device |
| CN109676903B (en) * | 2019-01-08 | 2021-04-13 | 山东福润橡塑科技有限公司 | Mould opening and closing device of blow molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3419832B2 (en) | 2003-06-23 |
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