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Splitting and core-pulling method for die-casting die

A die-casting mold and mold technology, which is applied in the field of core-pulling of die-casting molds, can solve the problems of blockage or retreat of the slider, and achieve the effect of solving the blockage or retreat and small contact area.

Inactive Publication Date: 2017-07-18
GUANGZHOU DIE & MOLD MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above problems, the object of the present invention is to provide a method for dismantling core-pulling of die-casting molds, which can solve the problems of the slider stuck or retreating due to excessive expansion force during the core-pulling process

Method used

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  • Splitting and core-pulling method for die-casting die
  • Splitting and core-pulling method for die-casting die
  • Splitting and core-pulling method for die-casting die

Examples

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Embodiment Construction

[0020] Such as Figure 2-4 The die-casting mold split core-pulling method shown, the mold used includes a fixed mold 41 and a movable mold 42 arranged with each other, and a number of fixed mold inserts and movable mold inserts are distributed and fixed in the fixed mold 41 and the movable mold 42, The core-pulling pins 2 continue to pass through the fixed mold insert and the movable mold insert after passing through the slide block 1 .

[0021] refer to figure 2 The core-pulling mechanism includes a slider 1, a core-pulling needle 2 and several driving cylinders. The cylinders in this embodiment are all hydraulic cylinders, and the core-pulling needle 2 and the slider 1 are respectively driven by different cylinders. The core-pulling needle 2 and the sliding Blocks 1 respectively have left and right movement strokes, and the moving direction of core-pulling pin 2 is parallel to its axis, and core-pulling pin 2 is slidably connected with slider 1 .

[0022] The working step...

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Abstract

The invention discloses a splitting and core-pulling method for a die-casting die. The method includes the following steps that an injection molding machine is used for die casting after die assembly is completed; a sliding block remains stationary, and core-pulling needles are driven to be pulled out of a cavity and then retracted into the sliding block; die opening is performed; the sliding block is driven to be retracted; and the sliding block and the core-pulling needles are driven to be reset after a product is taken out. Due to the facts that the core-pulling needles are pulled into the sliding block at first and then the sliding block is pulled out, compared with an original core-pulling structure, the contact area with a die casting liquid tool is smaller, the swelling force stressed is smaller, and the problem that the sliding block gets stuck or retreats due to the excessively-high swelling force in the core-pulling process is solved. The splitting and core-pulling method for the die-casting die is applied to the field of dies.

Description

technical field [0001] The invention relates to the field of molds, in particular to a method for splitting and core-pulling a die-casting mold. Background technique [0002] In the die-casting mold manufacturing industry, due to the characteristics of some products, it is necessary to intersperse multiple core-pulling needles between the movable mold and the fixed mold. If the core is opened again, the traditional rigid locking structure of the fixed mold wedge block cannot be used, and it is difficult to solve the situation that the slider is unstable due to excessive expansion force during die-casting production. Most existing technologies use figure 1 In the shown core-pulling mechanism, a plurality of core-pulling pins 5 and the slider 6 are fixedly connected together, and the slider 6 and the core-pulling pin 5 are driven by an oil cylinder 7, and the slider 6 and the core-pulling pin need to be pulled out at the same time 5. In this case, the slider will bear a grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D17/22
CPCB22D17/22B22D29/001
Inventor 陈永标梁振进何炽灵周希旺
Owner GUANGZHOU DIE & MOLD MFG
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