JPS63165118A - Method for introducing parison into bent mold cavity - Google Patents
Method for introducing parison into bent mold cavityInfo
- Publication number
- JPS63165118A JPS63165118A JP61309191A JP30919186A JPS63165118A JP S63165118 A JPS63165118 A JP S63165118A JP 61309191 A JP61309191 A JP 61309191A JP 30919186 A JP30919186 A JP 30919186A JP S63165118 A JPS63165118 A JP S63165118A
- Authority
- JP
- Japan
- Prior art keywords
- mold cavity
- parison
- bent
- nest
- cup
- 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
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000001125 extrusion Methods 0.000 description 12
- 238000005452 bending Methods 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 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
- B29C49/42—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
- B29C49/02—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
- B29C49/4245—Means for deforming the parison prior to the blowing operation during or after laying preform into the final mould aided by air floating
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、Ｌ字状、Ｕ字状等の一側方へ屈曲する合成樹
脂屈曲製品の吹成成形における屈曲型巣内入のパリソン
導入方法に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention is directed to the introduction of a parison with a bent cavity in the blow molding of a synthetic resin bent product bent to one side, such as an L-shape or a U-shape. Regarding the method.
（従来の技術）
従来、この種の屈曲型巣内へのパリソン導入方法として
、本発明者は、さきにＵ’ＦＪ発した屈曲製品の吹成成
形方法（特許第１２１５４８２号）において、パリソン
を屈曲型巣内にその開口上端から降下挿入すると共に、
該屈曲型巣内にその開口下端から吸引作用を加え、該吸
引によりパリソンを屈曲型巣内に導入させる方法を開示
し、それにより屈曲型巣内へのパリソンの導入を可能に
した。(Prior Art) Conventionally, as a method for introducing a parison into this type of bent-type nest, the present inventor has introduced a parison into a blow-molding method for a bent product (Japanese Patent No. 1215482) previously developed by U'FJ. Insert it into the bent nest from the upper end of the opening, and
A method is disclosed in which a suction action is applied to the bent nest from the lower end of its opening, and the parison is introduced into the bent nest by the suction, thereby making it possible to introduce the parison into the bent nest.
（発明が解決しようとする問題点）
本発明は、さきのパリソン導入方法をさらに改良し、Ｌ
字状、Ｕ字状等の一側方に屈曲する型巣内にさらに円滑
にパリソンを導入することができる方法を提供すること
を目的とする。(Problems to be Solved by the Invention) The present invention further improves the above parison introduction method, and
It is an object of the present invention to provide a method by which a parison can be more smoothly introduced into a mold cavity bent to one side, such as a shape of a letter or a letter U.
（問題点を解決するための手段）
上記目的を達成するため、本発明者は種々実験研究を重
ねた結果、押出ダイスからチューブ状パリソンを押出す
際パリソンの横断面の肉ＪＩｆを一側がわに厚く他側が
ｈに薄くすると、押出されるバリソンが薄肉がわに曲る
傾向を有することを発見し、それに基づいて本発明方法
は、 一端に上方へ開口する型巣入口を、他端に型
巣出口をそれぞれ有する一側方へ屈曲する開通型屈曲型
巣に対し、
横断面肉厚において上記屈曲型巣の屈曲がわに対応する
一側がわを薄く、他側がわを厚くしたパリソンを上記型
巣入口の上方から押出し降下させて上記屈曲型巣内に型
巣入口から挿入すると共に、上記屈曲型巣内における上
記パリソンの外側を流れて型巣出口から流出する気流を
与え、該気流によりパリソンを屈曲型巣内に導入させる
。(Means for Solving the Problems) In order to achieve the above object, the present inventor has conducted various experimental studies and found that when extruding a tubular parison from an extrusion die, the meat JIf of the cross section of the parison is removed from one side. It was discovered that when the extruded balisong is made thicker on one side and thinner on the other side to h, the extruded balisong has a tendency to bend towards the thinner side.Based on this, the method of the present invention is based on the following: For an open bent type nest that bends to one side, each having an outlet, a parison is made that is thinner on one side and thicker on the other side, corresponding to the bent side of the bent type nest in terms of cross-sectional wall thickness. The air is pushed out from above the mold cavity entrance and inserted into the bent mold cavity from the mold cavity entrance, and at the same time, an airflow is provided that flows outside the parison in the bent mold cavity and flows out from the mold cavity outlet. The parison is introduced into the bent nest.
溝成をとったのである。以下図面を参照して本発明の詳
細な説明する。Mizonari was chosen. The present invention will be described in detail below with reference to the drawings.
まず、屈曲型巣を形成すべき一対の割型（１）。First, a pair of split molds (1) are used to form a bent nest.
（１）は、第１．２図示のようにその開成面に本例では
５字状の屈曲型巣半面（２）、（２）をそれぞれ形成し
、該型巣半面（２）、（２）は、その一端に割型（１）
、（１）の上側面に開口する型巣入口半面（３）、（３
）を、その他端に割型（１）、（１）の左右側面に開１
」する型巣出口半面（４）、（４）をそれぞれ有する。As shown in Figure 1.2, (1) has five-shaped curved cavity half surfaces (2), (2) formed in this example on its open surface, respectively. ) has a split mold (1) at one end.
, (1) mold cavity entrance half opening on the upper side (3), (3
), split mold (1) on the other end, and open 1 on the left and right sides of (1).
The mold outlet halves (4) and (4) are respectively provided.
パリソンを供給すべき押出機（５）は、第１図示のよう
に上記一対の割型（１）、（１）の閉成時における一対
の型巣入目半面（３）、（３）で形成される型巣入口の
上方に５１．降自在のパリソン押出ダイ（６）を有し、
該押出ダイ（６）は、その下面に、環状のパリソン押出
成形孔（７）及びその中心部にエアブロ−ノズル（８）
を開設し、該押出成形孔（７）の横断面における孔１１
１は、上記り字状屈曲型巣半面（２）の屈曲がわに対応
する一側がわを狭く、他側がわを広く偏心的に形、成し
である。As shown in the first diagram, the extruder (5) to which the parison is to be supplied is provided with a pair of mold cavity half faces (3), (3) when the pair of split molds (1), (1) are closed. 51. above the mold cavity entrance to be formed. It has a freely descendable parison extrusion die (6),
The extrusion die (6) has an annular parison extrusion hole (7) on its lower surface and an air blow nozzle (8) in its center.
hole 11 in the cross section of the extrusion hole (7).
1 is eccentrically formed, with one side corresponding to the bent side of the above-mentioned crooked curved nest half surface (2) narrow and the other side wide.
Ａｉ１曲型巣内へのパリソン導入方法は次のようである
。まず、一対の割型（１）、（１）を開成して一対の屈
１１１１型巣半面（２）、（２）からなる両端開口のＬ
字状屈曲型巣を形成する。ついで第２図示のように押出
ダイ（６）を開成割型（１）、（１）の上面から若干上
昇させた状態で、押出成形孔（７）から第３図乗のよう
に横断面の肉厚が上記り字状屈曲型巣の屈曲がわに対応
する一側がｂｔｔ薄く、他側がわを厚く偏心的に形成さ
れたパリソン（Ｐ）を押出し、これを上記屈曲型巣内に
型巣入口半面（３）、（３）からなる型巣入口から挿入
降下させ、それと共に型巣出口半面（４，）、（４）か
らなる型巣出口にバキューム装置に接続された吸引カッ
プ（１１）を当接し、該カップ（ｌｌ）を通じて吸引作
用を型巣内に加え、それにより型巣入口から型巣内に流
入してパリソン（Ｐ）の外側を流れて型巣出口からカッ
プ（１１）を経て外部に流出する気流を生起させると共
に、押出ダイ（６）のエアブロ−ノズル（８）からエア
を吹出させ、それによりパリソン（Ｐ）の内側を流れて
型巣出口から同じくカップ（１１）を経て外部へ流出す
る気流をも付与し、これら両気流によりパリソン（Ｐ）
を案内して型巣内に導入していく。The method for introducing the parison into the Ai1 curved nest is as follows. First, a pair of split molds (1) and (1) are opened, and an L with openings at both ends consisting of a pair of curved 1111 mold half faces (2) and (2) is formed.
Forms a curved nest. Next, with the extrusion die (6) raised slightly from the upper surface of the open split molds (1), (1) as shown in the second figure, the cross section is cut from the extrusion molding hole (7) as shown in the third figure. Extrude a parison (P) whose wall thickness corresponds to the bending edge of the above-mentioned crooked-shaped bending-shaped nest, which is btt thinner on one side and thicker on the other side, and is eccentrically formed. A suction cup (11) is inserted and lowered from the mold cavity inlet consisting of inlet halves (3) and (3), and connected to a vacuum device at the mold cavity outlet consisting of mold cavity outlet halves (4,) and (4). is applied to the mold cavity through the cup (ll), thereby flowing into the mold cavity from the mold cavity entrance, flowing outside the parison (P), and passing the cup (11) from the mold cavity outlet. At the same time, the air is blown out from the air blow nozzle (8) of the extrusion die (6), and the air flows inside the parison (P) and also blows out the cup (11) from the mold cavity outlet. The parison (P)
We will guide you and introduce it into the mold nest.
この場合パリソンＣＰ）は上記のような偏肉の作用でＬ
字状屈曲型巣の屈曲がわに若干弓形に曲がりながら導入
されていき、それにより型巣の屈曲部において上記気流
による案内作用と相まって円滑に屈曲部に沿って挿入さ
れていく。In this case, the parison CP) is L due to the effect of uneven thickness as described above.
The curved shape of the curved nest is introduced while being slightly arched, and as a result, the mold nest is smoothly inserted along the bent part in conjunction with the guiding action of the airflow.
パリソンＣＰ）の先端部が型巣出口からカップ（１１）
内に若干突出したらパリソンの押出し及びバキューム装
置による吸引を停止し、ついで第４図示のように押出ダ
イ（６）を降下させて型巣入口をほぼ閉成し、又パリソ
ン（Ｐ）の先端部を、上記カップ（１１）に設けられた
一対のシールシャッタ（９）、（９）をエアシリンダ（
ｌＯ）、（１０）により閉じることにより挟着シールす
ると共に、該シャッタ（９）、（９）の開成とカップ（
１１）により型巣出口を閉成する。このようにすれば、
エアブロ−ノズル（８）から引き続き吹き出されるエア
によりパリソン（Ｐ）が吹きふくらまされ、所期の屈曲
製品の成形を行う、成形後、押出ダイ（６゛）を若干上
昇させると共に押出ダイと割型間のパリソンを切断分離
し、又シャッタ（９）、（９）を開くと共にカップ（１
１）を後退させ、しかる後割型（１）、（１）を開いて
成形品を取り出す。The tip of the parison CP) is connected to the cup (11) from the mold outlet.
When the parison protrudes slightly inward, extrusion of the parison and suction by the vacuum device are stopped, and then the extrusion die (6) is lowered as shown in Figure 4 to almost close the mold cavity entrance, and the tip of the parison (P) is removed. A pair of seal shutters (9), (9) provided on the cup (11) are connected to an air cylinder (
By closing the shutters (9) and (10), a sandwich seal is formed, and when the shutters (9) and (9) are opened, the cup (
11) Close the mold outlet. If you do this,
The parison (P) is inflated by the air continuously blown from the air blow nozzle (8), and the desired bent product is formed.After forming, the extrusion die (6゛) is slightly raised and the extrusion die Cut and separate the parison between the split molds, open the shutters (9), and open the cup (1).
1) is moved back, and then the split molds (1) and (1) are opened to take out the molded product.
（発明の効果）
本発明の屈曲型巣内へのパリソン導入方法によれば、屈
曲型巣内に導入されるパリソンは横断血肉ノ）メが屈曲
型巣の屈曲がわに対応する一側がわを薄く、他側がわを
厚くしであることにより屈曲型巣の屈曲がｂに若干曲が
り、それにより型巣の屈曲において気流の案内作用と相
まって円滑に屈曲部に沿って曲がることができ、屈曲型
巣内への確実なパリソン導入を行うことができるのであ
る。(Effects of the Invention) According to the method for introducing a parison into a curved nest of the present invention, the parison introduced into a curved nest has transverse blood and flesh particles on one side corresponding to the bend of the curved nest. By making it thinner and thicker on the other side, the curve of the bent mold nest bends slightly in the direction b, which allows the mold nest to bend smoothly along the bend in conjunction with the guiding action of the airflow when bending. This makes it possible to reliably introduce the parison into the mold cavity.
図面は本発明の実施例を示し、第１図は準備段階の一部
切欠側面図、第２図は屈曲型巣内へのパリソン導入段階
の一部切欠側面図、第３図は第２図の■−■線拡線断大
断面図４図はパリソンの先端シール段階の一部切欠側面
図である。
Ｐ・・・パリソン、２・・・屈曲型巣半面、３・・・型
巣入口半面、４・・・型巣出口半面。
第４図The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway side view at the preparation stage, FIG. 2 is a partially cutaway side view at the stage of introducing the parison into the bent nest, and FIG. FIG. 4 is a partially cutaway side view of the parison at the tip sealing stage. P... Parison, 2... Half side of bent nest, 3... Half side of type nest entrance, 4... Half side of type nest exit. Figure 4
Claims (1)
れぞれ有する一側方へ屈曲する開通型屈曲型巣に対し、 横断面肉厚において上記屈曲型巣の屈曲がわに対応する
一側がわを薄く、他側がわを厚くしたパリソンを上記型
巣入口の上方から押出し降下させて上記屈曲型巣内に型
巣入口から挿入すると共に、 上記屈曲型巣内における上記パリソンの外側を流れて型
巣出口から流出する気流を与え、該気流によりパリソン
を屈曲型巣内に導入させる、屈曲型巣内へのパリソン導
入方法[Claims] In contrast to an open bent type nest which is bent to one side and has an upwardly opening mold cavity inlet at one end and a mold cavity outlet at the other end, A parison having a thinner side on one side and a thicker side on the other side corresponding to the bent side is pushed down from above the entrance of the mold nest and inserted into the bent nest from the entrance of the mold nest, and A method for introducing a parison into a curved nest, which involves applying an airflow flowing outside the parison and flowing out from an outlet of the mold cavity, and introducing the parison into the curved nest by the airflow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61309191A JPS63165118A (en) | 1986-12-27 | 1986-12-27 | Method for introducing parison into bent mold cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61309191A JPS63165118A (en) | 1986-12-27 | 1986-12-27 | Method for introducing parison into bent mold cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63165118A true JPS63165118A (en) | 1988-07-08 |
| JPH0469538B2 JPH0469538B2 (en) | 1992-11-06 |
Family
ID=17990023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61309191A Granted JPS63165118A (en) | 1986-12-27 | 1986-12-27 | Method for introducing parison into bent mold cavity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63165118A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0574684A3 (en) * | 1992-06-16 | 1994-02-09 | Raku Gmbh | |
| EP1108522A1 (en) * | 1999-12-16 | 2001-06-20 | Fischer-W. Müller Blasformtechnik GmbH | Process and apparatus to modify the volume flow of a fan |
| US7535549B2 (en) | 2004-06-03 | 2009-05-19 | Board Of Regents, University Of Texas System | System and method for improvement of alignment and overlay for microlithography |
| DE102009001968A1 (en) * | 2009-03-30 | 2010-10-07 | Geiger Automotive Gmbh | Method and device for producing a plastic component and plastic component |
-
1986
- 1986-12-27 JP JP61309191A patent/JPS63165118A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0574684A3 (en) * | 1992-06-16 | 1994-02-09 | Raku Gmbh | |
| US5460300A (en) * | 1992-06-16 | 1995-10-24 | Raku Gmbh | Container with opposed attachable spray head and pump |
| EP1108522A1 (en) * | 1999-12-16 | 2001-06-20 | Fischer-W. Müller Blasformtechnik GmbH | Process and apparatus to modify the volume flow of a fan |
| US6884374B2 (en) | 1999-12-16 | 2005-04-26 | Fischer-W. Muller Blasformtechnik Gmbh | Suction control in a suction/blowing mold system |
| US7535549B2 (en) | 2004-06-03 | 2009-05-19 | Board Of Regents, University Of Texas System | System and method for improvement of alignment and overlay for microlithography |
| DE102009001968A1 (en) * | 2009-03-30 | 2010-10-07 | Geiger Automotive Gmbh | Method and device for producing a plastic component and plastic component |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0469538B2 (en) | 1992-11-06 |
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