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Combined knockout core structural investment pattern die bundling core

A core-pulling structure and combined technology, which is applied in the direction of cores, molds, and mold components, can solve problems such as easy slag inclusion, low production efficiency, and affecting the consistency of shape, position and size of casting products.

Inactive Publication Date: 2009-10-28
宁波双海机械制造有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The welding method is difficult to ensure the consistency of the shape and size of the casting products in mass production, and it is easy to include slag, the production efficiency is low, and the labor cost is high. Therefore, the existing technology affects the consistency of the shape and size of the casting products, low efficiency and high cost. problems and deficiencies

Method used

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  • Combined knockout core structural investment pattern die bundling core
  • Combined knockout core structural investment pattern die bundling core
  • Combined knockout core structural investment pattern die bundling core

Examples

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Embodiment Construction

[0020] refer to Figure 1 to Figure 7 , a combined core-pulling structure investment mold cluster core of the present invention includes a positioning mandrel 1, a pumping flap 2, a flap 3, a clamp 4, and an end seat 7, wherein: the The positioning mandrel 1 is in the core divided by the "well" shape, located at the center of the core axis, the section is a rectangular petal strip, and each of the four surface centers is provided with a raised guide rail 6 along the axial direction. There is a fixed blind screw hole in the center of the end of the strip; the pumping flap 2 is a core divided by a "well" shape, located on the four sides of the positioning mandrel 1, and has three cutting surfaces and a flap The center of the contact surface with the positioning mandrel 1 is provided with a recessed guide groove 5 along the axis direction, and the center of the tail end of the flap is provided with a fixed blind screw hole; Among the divided cores, the flaps with two cutting sur...

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Abstract

The invention discloses a combined knockout core structural investment pattern die bundling core, comprising a positioning mandrel, a drawing flap, a mould flap, a cramping device and a terminal base. The core is divided into nine flaps whose contact sides are parallel along the axial direction of the mould knockout core according to the mode of the Chinese character of ''Jing'', wherein the four cut surface rectangle flaps at the axial center are positioning mandrel, three cut surface flaps are drawing flaps and two cut surface flaps are mould flaps. The bundling solid core combined by nine flaps participates the investment pattern forming by inserting into the die, and draws out the positioning mandrel, the drawing flap and mould flap in turn during knockout. The combined knockout core structural investment pattern die bundling core avoids the welding procedure for the special form products in batch production by drawing the core in sequence, thus achieving the consistent dimension, high efficiency and low cost.

Description

technical field [0001] The present invention relates to a pressing mold for an investment mold, specifically referring to a combined core-pulling structure used for pressing the investment mold in the process section of prefabricating the investment mold in the investment casting stainless steel automobile exhaust emission conversion seat product Investment mold cluster core. Background technique [0002] Investment casting, also known as "lost wax casting", is usually coated with several layers of high-temperature-resistant and breathable refractory materials made of zircon sand, zircon powder, and silica sol on the surface of a wax investment mold, and then hardened and dried. Finally, the wax-made investment pattern is melted away to make a shell, the shell is strengthened by roasting, and then the molten metal is poured into the inner cavity of the shell, and after the melt is condensed, the shell is removed to obtain a metal casting product. , Because the obtained cast...

Claims

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Application Information

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IPC IPC(8): B22C9/10B22C9/04
Inventor 宋根勇娄绍东谢时浪何长赙
Owner 宁波双海机械制造有限公司
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