JPS6211613U

JPS6211613U -

Info

Publication number: JPS6211613U
Application number: JP1985103582U
Authority: JP
Priority date: 1985-07-09
Filing date: 1985-07-09
Publication date: 1987-01-24
Also published as: JPH0418810Y2

Description

[Brief explanation of the drawing]

第１図、本考案による多ヘツド式パリソン成形
装置の一実施例を示す要部切り欠き平面図、第２
図は、その多ヘツド式パリソン成形装置の要部縦
断側面図、第３図は、その多ヘツド式パリソン成
形装置の一部切り欠き正面図、第４図は、従来の
多ヘツド式パリソン成形装置の一例を示す要部切
り欠き平面図、第５図は、第４図の多ヘツド式パ
リソン成形装置の要部縦断側面図である。１…多ヘツド式パリソン成形装置、２…分岐ブ
ロツク、３…成形ヘツド、５…樹脂導入口、６…
樹脂流路、７…第１分岐部、８_１，８_２…第１分
岐流路、９_１，９_２…第２分岐部（最終分岐部）
、１０_１，１０_２，１０_３，１０_４…第２分岐流
路（最終分岐流路）、１１…放熱空間、１２…樹
脂通路、１２ｂ…直線状通路、１３，１４，１５
…ハウジング、１７…スタテイツクミキサ、１９
…ダイ、２０…コア、２２…すき間。 FIG. 1 is a cutaway plan view of essential parts showing an embodiment of the multi-head parison forming apparatus according to the present invention;
The figure is a longitudinal sectional side view of essential parts of the multi-head parison forming apparatus, FIG. 3 is a partially cutaway front view of the multi-head parison forming apparatus, and FIG. 4 is a conventional multi-head parison forming apparatus. FIG. 5 is a cross-sectional side view of the main part of the multi-head parison forming apparatus shown in FIG. 4. FIG. DESCRIPTION OF SYMBOLS 1... Multi-head parison molding device, 2... Branch block, 3... Molding head, 5... Resin inlet, 6...
Resin channel, 7...first branch part _{, 81,82} _... first branch channel _, _91,92 ...second branch part (final branch part)
, 10 ₁ , 10 ₂ , 10 ₃ , 10 ₄ ... second branch flow path (final branch flow path), 11 ... heat radiation space, 12 ... resin passage, 12b ... linear passage, 13, 14, 15
...Housing, 17...Static mixer, 19
...Die, 20...Core, 22...Gap.

Claims

[Claims for Utility Model Registration] (1) A branching block equipped with a resin flow path 6 that branches melt resin supplied from an extruder into a plurality of branch flow paths 8 ₁ , 8 ₂ ; 10 ₁ to 10 ₄ 2 to a plurality of forming heads 3, 3, . . . , and each forming head 3, 3, . . . simultaneously molds a plurality of parisons; The two resin channels 6 bifurcate symmetrically into a pair of first branch channels 8 ₁ , 8 ₂ at a first branch 7 communicating with the extruder, and each of the first branch channels 8 ₁ , 8 ₂ branches symmetrically into a pair of second branch passages 10 ₁ , 10 ₂ ; 10 ₃ , 10 ₄ at the downstream second branch parts 9 ₁ , 9 ₂ , respectively, and branches in the same way sequentially to reach the final branch part 9 . ₁ , 9 ₂ , the resin passage 1 of each molding head 3, 3,...
Final branch flow path 1 communicating with 2, 12,...
0 ₁ to 10 ₄ , and the final branch portions 9 ₁ and 9 of the branch block 2
₂ , a heat radiation space 11 is formed between the final branch flow paths 101 to 104 to substantially equalize the heat radiation conditions of the resin flowing through each of the final branch flow paths ₁₀₁ to ₁₀₄ . (2) The resin passage 12 of each molding head 3 is provided with a linear passage 12b passing through the center of the housing 14 of the molding head 3, and a static mixer 17 is provided in the linear passage 12b. A multi-head parison forming apparatus according to claim 1 of the claimed utility model registration. (3) A gap 22 between the housings 13, 13, ...; 14, 14, ... of each of the molding heads 3, 3, ...;
A multi-head parison forming apparatus according to claim 2 of the claimed utility model registration, characterized in that it is provided with: