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Grating and preparation method thereof

A grid and temperature control technology, applied in the field of grid processing, can solve the problems of affecting product quality, high demoulding force, high defective rate, and achieve the effect of flexible and diverse sizes, easy cutting, and high product quality.

Active Publication Date: 2014-10-29
浙江慧凯模塑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the process of preparing the grid, the existing technology uses a single-sided mold for preparation, and when the grid is taken out after forming, the product is often cracked due to excessive demoulding force, which affects product quality and has a high defective rate

Method used

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  • Grating and preparation method thereof
  • Grating and preparation method thereof
  • Grating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of the grid is as follows:

[0025] (A) Put the raw materials for preparing the grid into the mold and then press it with the mold, the mold includes an upper mold and a lower mold;

[0026] (B) Perform compression molding, the surface temperature of the upper mold is controlled at 135°C, the temperature of the lower mold surface is controlled at 140°C, the pressure is controlled at 10MPa, and the pressure holding operation time is 600s;

[0027] (C) The product after compression molding is opened and taken out, and the upper and lower surfaces are polished to obtain a grid. The depth of the square holes of the resulting grid is 25 mm.

Embodiment 2

[0029] The preparation method of the grid is as follows:

[0030] (A) Put the SMC glass fiber composite material, which is the raw material of the grid, into the mold and press it with the mold. For the specific shape of the mold, see figure 1 , Including the upper mold and the lower mold, the upper mold and the lower mold of the mold have a plurality of protrusions 2 arranged in an orderly manner. The protrusions 2 are trapezoidal. The protrusions 2 extend from the side close to the mold to the one far away from the mold. The cross-sectional area of ​​one side gradually decreases;

[0031] (B) Compression molding is performed, the surface temperature of the upper mold is controlled at 145°C, the temperature of the lower mold surface is controlled at 150°C, the pressure is controlled at 15MPa, and the pressure holding operation time is 600s;

[0032] (C) Open the mold and take out the product after compression molding, and polish the upper and lower surfaces to make a grid. For the s...

Embodiment 3

[0035] The preparation method of the grid is as follows:

[0036] (A) Put the SMC glass fiber composite material, which is the raw material of the grid, into the mold and press it with the mold. The mold includes an upper mold and a lower mold. The upper mold and the lower mold of the mold have a plurality of ordered protrusions. 2. The protrusion 2 is in the shape of a trapezoid, and the cross-sectional area of ​​the protrusion 2 gradually decreases from the side close to the mold to the side away from the mold;

[0037] (B) Press molding, the upper mold surface temperature is controlled at 140°C, the lower mold surface temperature is controlled at 145°C, the pressure is controlled at 15MPa, and the pressure holding operation time is 500s;

[0038] (C) The product after compression molding is opened and taken out, and the upper and lower surfaces are polished to obtain a grid. The specific shape of the grid includes a substrate. The substrate is provided with a plurality of square h...

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Abstract

The invention relates to the field of grating processing, and particularly relates to a grating and a preparation method thereof. The preparation method of the grating comprises the following steps: (A) putting raw materials for preparing the grating into a mold, and compressing by the mold, wherein the mold comprises an upper mold and a lower mold; (B) carrying out compression molding, controlling the molded surface temperature of the upper mold to be 135-145 DEG C, controlling the molded surface temperature of the lower mold to be 140-150 DEG C, controlling the pressure to be 10-15MPa and controlling the running dwell time to be 400-600s; and (C) opening the mold to take out a product out subjected to compression molding, polishing the upper surface and the lower surface of the product, thereby preparing the grating. Compared with the preparation method of the grating in the prior art, the preparation method of the grating, which is provided by the invention, has the advantages that the grating is prepared by adopting the double-sided mold, and the demolding force is distributed to front and rear sides by demolding double sides after molding, so that the grating is stressed uniformly; according to the preparation method, the product defective rate is reduced greatly, and the product quality is high.

Description

Technical field [0001] The present invention relates to the field of grid processing, in particular to a grid and a preparation method thereof. Background technique [0002] There are many uses for the grille. Its main use is in rest platforms, walkways, ditch covers and treads. It can also be used in environmental protection equipment and sewage treatment. It can be seen that grilles are widely used in petrochemical, electricity, sewage treatment, etc. each field. [0003] However, in the process of preparing the grille, the prior art adopts a single-sided mold for preparation, and when the grille is taken out after being formed, the product is often cracked due to excessive demolding force, which affects the product quality and has a high defective rate. Summary of the invention [0004] The purpose of the present invention is to provide a grid and a preparation method thereof to solve the above-mentioned problems. [0005] In the embodiment of the present invention, a method for ...

Claims

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Application Information

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IPC IPC(8): B29C70/46B29C70/54B29C33/00
CPCB29C70/46
Inventor 李加春
Owner 浙江慧凯模塑科技有限公司
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