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Compression injection moulding method and device for preforms

A technology of compression pressing and semi-finished products, which is applied in the field of mold compression and die-casting semi-finished products, can solve the problem of troublesome plates with multiple activities, and achieve the effect of shortening the dosage time.

Inactive Publication Date: 2011-01-12
NETABTAL MASCHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of this solution is the complicated construction with several movable plates, the solution being only suitable for a small number of mold cavities

Method used

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  • Compression injection moulding method and device for preforms
  • Compression injection moulding method and device for preforms
  • Compression injection moulding method and device for preforms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] figure 1 A complete die-casting machine of the prior art for processing semi-finished products 10 is shown, with a bed 1 on which a fixed mold support plate 2 and an injection unit 3 as well as a support plate 4 are supported. The movable mold supporting plate 5 is supported on the bed 1 so as to move axially. The fixed mold support plate 2 and the support plate 4 are connected to each other by four cross members 6 which are guided through the movable mold support plate 5 . Between the support plate 4 and the movable mold support plate 5 there is a drive unit 7 for generating the closing movement and the closing pressure. The stationary mold support plate 2 and the movable mold support plate 5 support the mold halves 8 and 9, respectively, in which a plurality of mold cores 24 and mold cavities 60 are arranged respectively, which together form mold nests for producing a corresponding number of sleeve die castings part. After the mold halves 8 and 9 have been opened, ...

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PUM

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Abstract

The invention relates to a method and a device for the compression injection moulding of preforms (10) by means of an injection moulding machine comprising one movable and one fixed tool carrier plate (2, 5) and a mould with a plurality of mould nests or cavities (60), the movable mould half (8) being designed with cores (24) and the melt being introduced into the cavities (60) on the fixed mould-half (9) side via controlled valves. The cores (24) penetrate the mould nests or cavities (60) before completion of the melt dosage to such a depth that said mould nests are at least substantially closed to the exterior. The melt is introduced into the mould nests or cavities (60) when the moulds are not completely sealed, the valves are closed and the compression pressure is produced by means of the cores (24) by the complete closure of the moulds.

Description

technical field [0001] The invention relates to a method for compressing die-cast semi-finished products using a die-casting machine, movable and stationary mold support plates and a mold with a plurality of nests or cavities, wherein the movable mold halves are formed by cores and the melt is kept in a static One side of the mold support plate is dosed into the empty mold cavity through a controlled valve. [0002] The invention also relates to a device for compressing die-cast semi-finished products using a die-casting machine with movable and stationary mold support plates and a mold with a plurality of nests or cavities, wherein the movable mold halves are formed by cores and the melt is kept in a stationary state. One side of the mold support plate is dosed into the empty mold cavity through a controlled valve. Background technique [0003] Compression die casting is a prerequisite when processing flat plates, especially CDs. In this case, the melt is guided through t...

Claims

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Application Information

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IPC IPC(8): B29C45/02B29C45/56
CPCB29K2105/253B29C45/02B29C45/561B29C45/461B29C45/2806
Inventor S·博克
Owner NETABTAL MASCHEN
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