Rapid prototyping system and method for high-precision ester cured water glass sand mold/core

A molding method and technology for solidifying water, applied in the directions of cores, mold components, casting molding equipment, etc., can solve the problems of poor preparation effect, low manufacturing accuracy, and difficulty in recycling old sand, and improve the reuse rate. , the effect of reducing processing energy consumption and production cost

Inactive Publication Date: 2015-04-08
MAANSHAN SANCHUAN EQUIP TECHN & TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0011] The purpose of the present invention is to solve the following problems: 1) the existing water glass sand mold / core needs to be molded, and the ester solidified water glass sand increases with the number of times of recycling, and the old sand recovery is difficult; 2) the existing sand mold / core is sprayed and solidified The manufacturing accuracy of the additive manufacturing method is not high; 3) the preparation effect is not good for sand molds / cores with high viscosity of binder or curing agent, and sand molds / cores whose performance changes significantly with time; a high-precision ester curing water is provided Rapid prototyping system and method for glass sand mold / core

Method used

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  • Rapid prototyping system and method for high-precision ester cured water glass sand mold/core
  • Rapid prototyping system and method for high-precision ester cured water glass sand mold/core

Examples

Experimental program
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Effect test

Embodiment 1

[0037] see figure 2, a rapid prototyping system for a high-precision ester-cured water glass sand mold / core of this embodiment, including a box body 1, a mixing device 2, a liquid dispensing bin 31, a dripping device 33, a material spreading device 52, and a lifting table 73 and controller 8. The mixing device 2 and the liquid dispensing bin 31 are respectively arranged on the upper parts of the two sides of the box body 1, wherein the mixing device 2 is equipped with molding / core sand and water glass, and the mixing device 2 is used to mix the molding / core sand and water glass. Core sand and water glass are thoroughly mixed. The bottom of the mixing device 2 is provided with a discharging port 21 , and a receiving table 51 is arranged below the discharging port 21 , and the mixed material 62 that is mixed evenly falls onto the receiving table 51 from the discharging port 21 . The material spreading device 52 is located below the material outlet 21 and above the material re...

Embodiment 2

[0046] A rapid prototyping system for a high-precision ester-cured water glass sand mold / core of the present embodiment is basically the same as that of Example 1, and its molding process is briefly described as follows:

[0047] (1) Establish the CAD geometric entity model of the sand mold / core, and perform layered discrete, generate the running track file of the dripping device for each discrete layer, and import it into the controller of the dripping device through the data interface, and record the number of discrete layers n.

[0048] (2) Mix 80 parts of 70 / 140 mesh mullite sand with 5 parts of water glass with a modulus of 2.5 in a mixing device.

[0049] (3) Spread the mixed mold / core sand coated with water glass on the lifting worktable with a spreading device.

[0050] (4) The compound organic ester of glycerol diacetate and glycerol monoacetate is dropped by the dripping device according to the running track of the first discrete layer generated by the host computer...

Embodiment 3

[0053] A rapid prototyping system for a high-precision ester-cured water glass sand mold / core of the present embodiment is basically the same as that of Example 1, and its molding process is briefly described as follows:

[0054] (1) Establish the CAD geometric entity model of the sand mold / core, and perform layered discrete, generate the running track file of the dripping device for each discrete layer, and import it into the controller of the dripping device through the data interface, and record the number of discrete layers n.

[0055] (2) Mix 120 parts of 70 / 140 mesh olivine sand and 4 parts of water glass with a modulus of 1.8 in a mixing device.

[0056] (3) Spread the mixed mold / core sand coated with water glass on the lifting table with a spreading device.

[0057] (4) The compound organic ester mixed with diethylene glycol diacetate, glycerol monoacetate and ethylene glycol monoacetate is dropped by the dripping device according to the running track of the first dis...

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Abstract

The invention discloses a rapid prototyping system and method for a high-precision ester cured water glass sand mold / core, and belongs to the technical field of sand mold / core prototyping. The method comprises the following steps: firstly establishing a CAD geometry solid model of the sand mold / core, performing layered discretization, generating a moving trajectory file of each discrete level dripping device and guiding the moving trajectory file of each discrete level dripping device into a controller, and recording the number n of discrete layers; evenly mixing the mold / sand core with water glass by using a mixing device; flatly spreading the mold / core sand wrapped by the water glass on a lifting working platform by a spreading device; and dripping composite organic ester according to the extracted moving trajectory of a first discrete level by the dripping device, after the first discrete level is completed, enabling the lifting working platform to move down, sequentially completing the dripping working procedures of the follow-up discrete levels, curing for 1h to 8h, and taking the mold core out. The rapid prototyping system and method provided by the invention have the advantages of being capable of shortening the manufacturing cycle of the sand mold / core, improving the prototyping precision and performance, increasing the repeated utilization rate of used sand, and reducing the production cost.

Description

technical field [0001] The present invention relates to the technical field of sand mold / core molding, more specifically, relate to a kind of rapid prototyping system and method of high-precision ester-cured water glass sand mold / core, the method is especially suitable for the sand mold / core of solidified water glass with organic ester rapid prototyping. Background technique [0002] Sodium silicate sand is the molding sand most likely to realize green casting production in the foundry industry in the 21st century. However, there are respective deficiencies in different water glass sand hardening processes at present. For example, ordinary hardened sodium silicate sand has problems such as high energy consumption, high labor intensity, and uneven baking degree inside and outside the sand mold / core; CO 2 Air blowing hardened water glass sand has defects such as poor collapsibility, difficult regeneration of old sand, and unstable hardening process; powder hardened water gla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/10B22C1/20
CPCB22C1/188B22C9/02B22C9/10
Inventor 沈浩张龙王美李远才
Owner MAANSHAN SANCHUAN EQUIP TECHN & TECH CO LTD
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