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Casting demoulding device

A demoulding device and casting technology, applied in the field of casting demoulding, can solve problems such as limited installation space, fracture, deformation, etc.

Active Publication Date: 2016-05-04
QINHUANGDAO DICASTAL XIONGLONG WHEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to ensure the synchronous action of the upper cavity ejection and the lower cavity ejection of the mold, so that the stress of the casting itself is greatly reduced, thereby solving the problem of serious deformation of the casting due to the obstruction of demoulding, and also eliminating the excessive stress of the spoke part. risk of breakage
The device does not need to add additional driving elements and only relies on the lifting force of the upper cavity of the mold to realize the demoulding of the casting, which solves the problem of limited installation space of some mold accessories

Method used

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  • Casting demoulding device

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Experimental program
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Effect test

Embodiment Construction

[0014] Embodiments of the invention:

[0015] During the mold opening process, the top mold 12 is pulled by the die-casting machine to drive the tie rod 1 to rise, and the rhombic head of the tie rod 1 pushes the slider group 4 to make it rise along the slope of the slider seat 5 . The tray 3 is driven by the rising action of the two sliders to eject the ejector pin 6, and the casting is demolded. When the two slide blocks and the pull rod 1 just disengage, the slide block rises to the highest point along the slide block seat 5, that is, the ejector rod 6 is at the highest point of ejection.

[0016] During the mold clamping process, the tie rod 1 contacts with the slider group 4 first, and the diamond-shaped head spreads the two sliders and returns to the original position. The back mold 12 contacts with the return rod 8 and the tray is pressed back to its original position, that is, the push rod 6 resets.

[0017] The parts of the device are in rigid contact, and the casti...

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Abstract

The invention discloses a hub casting demoulding device. The device mainly comprises a tie rod 1 and components (including 3, 4, 5, 6, 7 and 8) on a bottom die in a rigid connection or rigid contact manner. In the casting demoulding device, a sliding mechanism is taken as a transmission core to realize synchronous actions such as drawing of a top die and ejection of an ejector rod of the bottom die, and the actions are performed and automatic return is realized without additional auxiliary drive elements. The device is characterized by solving the problems of high requirements on a demoulding force of a lower cavity of a certain hub casting (the casting is easily deformed and ruptured) and restricted installation space of auxiliary devices. The casting demoulding device adopting a mechanical structure has the advantages of better reliability and long service life.

Description

technical field [0001] The invention relates to a casting demoulding technology, and is especially suitable for a demoulding device of a wheel hub low-pressure casting mold. Background technique [0002] In the casting production of wheel hubs, the commonly used demoulding method relies on the lifting action of the upper cavity of the mold hall and the vertical lifting action to make the casting out of the lower cavity. However, for the castings that require the demoulding force of the lower cavity, this demoulding method is likely to cause excessive axial deformation of the castings, and it is also easy to cause stress concentration or even fracture on the spokes. In order to overcome the above shortcomings, there have also been some ejection devices installed in the lower cavity. However, these devices are often driven by hydraulic and electrical components, and their reliability and working life are not ideal in the high-temperature environment of the lower cavity of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D29/08B22D18/04
Inventor 刘建芳任国庆周广利齐文远
Owner QINHUANGDAO DICASTAL XIONGLONG WHEEL
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