Hot sprue system for diecasting

A technology of die casting and direct sprue, which is applied to casting equipment, casting molding equipment, and equipment for feeding molten metal into molds, etc., and can solve problems such as exceeding financial capabilities and lengthy time processes

Inactive Publication Date: 2002-10-09
HOTFLO DIECASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in direct injection systems using multi-cavity molds, major changes to existing die-casting machines are required in terms of flow and control of the molten metal, making machine set-up and tooling modifications very demanding. has a lengthy time course
In summary, direct injection die casting appears to be beyond the current technical and financial capabilities of most hot chamber die casters at this time

Method used

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  • Hot sprue system for diecasting
  • Hot sprue system for diecasting
  • Hot sprue system for diecasting

Examples

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Embodiment Construction

[0026] Figure 2-4 is a partial sectional view of a conventional die casting machine 100. The mold assembly 102 is shown closed and mounted between a fixed template 104 and a movable template 106 . The mold assembly 102 includes a fixed backing plate 108 fastened to the fixed template 104 with a heat shield 109 placed therebetween, and a movable backing plate 110 fastened to the moving template 106 . The fixed module 112 is fastened on the fixed backplane 108 , and the mobile module 114 is fastened on the mobile backplane 110 . Surface 115 is the parting surface between modules 112 and 114 . Template frames 116 are fastened to each side of the mobile backplane 110 so as to transmit the force of the mobile template 106 to the mobile modules 114 through an ejector assembly 118 . The ejector frame assembly 118 includes a pair of ejector support plates 120a and 120b on which a set of four ejector pins 122 and the heads of a cross gate ejector pin 124 are fixed.

[0027] Cavity...

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Abstract

The invention discloses a mold insert and a process method for high-pressure hot-chamber metal mold casting, which basically eliminates the sprue casting body and greatly improves the flow conditions of molten metal. The mold insert includes: (1) a heated sprue body insert (130, 258) positioned within a stationary block (112) in the mold assembly and including a sprue channel (136, 260); (2) a sprue channel (136, 260); Cooled sprue head inserts (132, 266) are installed in the moving module (114) of the mold assembly. The sprue channel body inserts and head inserts are mounted coaxially so that their inner ends fit well with each other in the area of ​​the parting surface (155) of the mold and at least form a curved transition channel ( 138,262,264) which connects the sprue channel (136,260) with at least one sprue channel (140,254,256) formed along the parting surface. The temperature of the sprue body inserts and head inserts is controlled, so that the solidification point of the molten metal can occur just in the transition channel, and after each injection, the sprue channel can be ensured. Residual molten metal is returned to the nozzle of the casting machine, so that the sprue body is never formed again.

Description

technical field [0001] This invention relates to methods and apparatus for high pressure metal mold casting, and more particularly to sprue systems for use in hot chamber high pressure metal mold casting processes. Background technique [0002] At present, a large number of hot chamber, high pressure, metal mold casting machines have been installed in foundry production for the production of small die castings made of zinc, lead, tin, magnesium, aluminum and their alloy materials. figure 1 A typical such machine tool 10 is shown. A pool of molten metal 12 is contained in a heated crucible 14 . Inside a cylinder 18 submerged in the molten metal is a plunger 16 which injects the molten metal through a gooseneck 20 and a connecting nozzle 22 heated by an external flame into a fixed block 26 and a mobile block. 28 in the cavity 24 between. The fixed module 26 is mounted on a fixed template 30 and the mobile module 28 is mounted on a movable template 32...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/06B22C9/08B22D17/02B22D17/22B22D17/20B22D17/32
CPCB22D17/2272
Inventor 格雷厄姆·L·威尔逊
Owner HOTFLO DIECASTING
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