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Device and method for compression moulding of plastic articles

A molding and equipment technology, which is applied in the field of parison molding, can solve problems such as equipment performance limitations, and achieve the effect of accelerating the molding cycle and reducing the closing and opening strokes

Inactive Publication Date: 2007-12-12
S.I.P.A.工业设计自动化股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, the currently known molded carousel requires the use of small-sized dosing equipment, which has certain limitations on the performance of the equipment

Method used

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  • Device and method for compression moulding of plastic articles
  • Device and method for compression moulding of plastic articles
  • Device and method for compression moulding of plastic articles

Examples

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Embodiment Construction

[0031] 1 to 4 schematically show a preferred example of a plant for the production of molded plastic objects using the compression molding method of the present invention, said plant comprising a filling station 1 , a compression station 4 . The filling station 1 is able to pour a predetermined quantity of plastic material to be molded into the mold cavity 2 of the female mold half 3 . The filling equipment of Figures 1 and 2 comprises a rotating carousel (or filling carousel), which rotates in zone 5 around a vertical axis A-A, continuously quantifying the plastic material extruded from mastication screw 6 picked up into variable-volume cavities 7, for example arranged near the outer edge of the filling carousel, and carried to the discharge area 8, where the plastic material is poured into the female half cavity 2 (FIG. 3) of the mold 3, causing them to flow out through an opening (not shown) in each dosing cavity 7. In the example shown, the openings of the different varia...

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PUM

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Abstract

A device for compression moulding of plastic objects, comprising a plurality of compression-moulding units (9), each of which comprises a core mould element and a moulding cavity (2) filled by dropping into it a dose of plastic material; each moulding unit (9) is designed to carry out a moulding sequence comprising an operation of opening of the mould, an operation of filling of the moulding cavity, and an operation of closing of the mould. The device further comprises cam mechanisms for taking the moulding cavity outside of the vertical axes of the positive-mould element between the operation of opening of the mould and the operation of filling of the moulding cavity.

Description

technical field [0001] The present invention relates to an apparatus and method for molding articles made of plastic material, said apparatus and method being particularly suitable for parison molding for the production of bottles, cans and containers for general use by blow molding. Background technique [0002] In the prior art, in particular, known various molding equipment and methods for the manufacture of articles from plastic materials are continuous cycle molding presses, in which one of the different types of equipment, the spreading device, is applied by dropping a small or Quantities of fluid plastic material to be molded fill the various mold cavities. [0003] Parisons for the production of blown containers, in particular one made of PET, are usually produced by injection molding or extrusion. In general, injection casting equipment operates sequentially, ie a step of filling the different cavities of one and the same mold with fluid plastic material, followed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C43/08B29C43/34B29C31/06B29C33/36B29C31/04B29C33/34B29C47/00B29C43/06B29K67/00B29L22/00
CPCB29C31/048B29C43/34B29C43/08B29C31/065B29C2043/3466B29C33/36B29C31/047
Inventor 马泰奥·佐帕斯
Owner S.I.P.A.工业设计自动化股份公司
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