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Equipment for injection casting cores

A casting mold and equipment technology, applied in casting molding equipment, cores, casting molds, etc., can solve the problems of large-scale and short-cycle mass production of casting cores

Active Publication Date: 2021-02-12
NEMAK S A B DE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This investment makes the large-scale, short-run mass production of casting cores of the type described here difficult.

Method used

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  • Equipment for injection casting cores
  • Equipment for injection casting cores
  • Equipment for injection casting cores

Examples

Experimental program
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Effect test

Embodiment Construction

[0044] Figure 1-4 shown in Device 1 and Figure 6-9 The device 100 shown in is used to inject as Figure 5 The casting core G shown in the example. The parts of the device 1,100 are made of materials suitable for this purpose in the prior art.

[0045] According to this, the casting core G, which is to be injected from a conventional molding material supplied as a sand-binder-mixture, has the basic shape of a hollow cylinder with a circular cross-section and along the The longitudinal direction LR coaxial with the central longitudinal axis LS of the casting core G extends a height H. The casting core G therefore surrounds with its peripheral wall U the open-ended interior I that is traced by the inner slide 2 . In this case, the circumferential wall U is not designed as a solid, closed wall, but is divided into radially protruding projections V, recesses A, local material accumulations M, connecting webs S and the like.

[0046] The device 1,100 comprises an inner slider...

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PUM

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Abstract

The invention relates to a device (1; 100) for an injection casting core (G) which surrounds an open inner chamber (I) at its outer boundary, wherein the device (1; 100) A molding cavity (5) with a profiled casting core (G) surrounds an inner slide (2) extending along the longitudinal axis (LZ) and is surrounded on its outer side by an outer slide ( 3) Definition, wherein the net width (W) of the molding cavity (5) passes through the inner surface (7) of the outer slider (3) corresponding to the molding cavity (5) and the outer surface of the inner slider (2) (6) The distance between them is determined. The device ( 1 ; 100 ) according to the invention enables the operationally reliable production of casting cores (G) with a tubular basic shape but with a finely structured wall, also on a high-volume basis. This is achieved by the fact that the inner slider sections (2a-2e) can be adjusted between a withdrawal position and an injection position close to the outer slider (3), in which the inner slider sections approach each other and approach The clear width (W) of the molding cavity (5) positioned on the longitudinal axis (LZ) of the inner slider (2) and existing between the inner slider (2) and the outer slider (3) is enlarged, and the injection position, the net width (W) of the molding cavity (5) conforms to the target preset value of the casting core (G) to be injected.

Description

technical field [0001] The invention relates to an apparatus for injection casting cores, which are required when casting castings from metal alloys. Such casting cores are used in corresponding casting molds in order to form cavities and other shaped elements in the casting to be cast. Background technique [0002] In this case, the casting core is usually formed from a molding material, typically a sand-binder mixture, which is introduced (injected) at high pressure into a shaped cavity of the core injection device. The fluidity of the molding material, the injection pressure and the position at which the molding material is introduced into the molding cavity of the machine provided for producing the cores are determined in such a way that a complete shape can also be obtained when the cores are particularly fine parts filling. After injection of the core, the core is solidified by the application of heat or reaction gas, so that it can be used in the corresponding mold ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/10B22C7/06
CPCB22C7/06B22C9/10B22C9/02B22C9/103B22C9/108B22C9/24B22D31/002B22C13/12
Inventor 马库斯·格雷森鲍尔格哈雷·施特拉斯尔迈克尔·雷施
Owner NEMAK S A B DE