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Sectional mold core for reducing ejection force

A segmented, demoulding force technology, applied in the field of metal smelting, can solve the problems of high labor intensity, poor safety, low efficiency, etc., and achieve the effect of solving high labor intensity and reducing impact force

Inactive Publication Date: 2014-09-03
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a segmented mold core that reduces the demoulding force and reduces the force of knocking when the mold core comes out of the ingot, so as to solve the problems of high labor intensity, low efficiency and poor safety when the integral mold core is used. question

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  • Sectional mold core for reducing ejection force
  • Sectional mold core for reducing ejection force
  • Sectional mold core for reducing ejection force

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] Such as figure 1 Shown is a monolithic core used in the metal smelting industry.

[0039] Such as figure 2 Shown, segmented mold core of the present invention, its technical solution step is:

[0040] (1) Determine the material of the mold core and the overall height, taper, and maximum outer diameter of the cone;

[0041] (2) The overall structure of the mold core;

[0042] (3) Heat treatment and welding of mold core parts.

[0043] The specific implementation is as follows:

[0044] Step 1: Determine the material of the core and the overall height, taper, and maximum outer diameter of the core.

[0045] According to the characteristics of the cast metal, 45 steel is selected as the mold core material in this example. According to the height from the bottom of the mold to the sprue, the height of the mold core is designed to be H in this...

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Abstract

The invention discloses a sectional mold core for reducing ejection force. At least one shaft shoulder (11) is arranged on a central spindle (5); the lower end of the central spindle (5) is connected with a bottom conical mold core (1); the top end of the central spindle (5) is connected with a core head (8); a lifting supporting hole (12) is formed in the core head (8); middle conical mold cores (3) as many as the shaft shoulders (11) sleeve the central spindle (5); each shaft shoulder (11) is correspondingly pressed against one middle conical mold core (3) and has a section of axial movable space relative to each middle conical mold core (3); a top conical mold core (4) sleeves the upper end of the central spindle (5); a spring (6) is arranged between the core head (8) and the top conical mold core (4); the taper of each of the bottom conical mold core (1), the middle conical mold core (3) and the top conical mold core (4) is 1:N. The sectional mold core is labor-saving in striking and capable of reducing ejection force when being separated from a cast ingot, so that the problem that an overall mold core is high in labor intensity, low in efficiency and low in safety during use is solved.

Description

technical field [0001] The invention relates to a mold core in the field of metal smelting, in particular to a segmented mold core which can save striking force when the ingot is pulled out. Background technique [0002] In metal casting, the mold core is a support that is solidified and fixed in the ingot by the molten metal, and is used for lifting the ingot from the mold by a crane. After the ingot is lifted from the mold, the core is removed from the ingot for reuse. Since the shrinkage of the metal produces a compressive force when the metal is solidified, the mold core is subjected to a large frictional force of the shrinking metal, and it becomes very difficult to release the mold core from the ingot. At present, the integral mold core is used in metal casting, that is, a whole conical metal rod. When the integral mold core is hit by a sledgehammer manually to make it disengage from the ingot, a relatively large hammering force is required. And sometimes it needs mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D7/06
Inventor 严宏志周腾飞叶辉
Owner CENT SOUTH UNIV