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A kind of grid and preparation method thereof
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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 effects of flexible and diverse sizes, easy cutting and high product quality.
Active Publication Date: 2016-08-24
浙江慧凯模塑科技有限公司
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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
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Embodiment 1
[0024] The grid is prepared as follows:
[0025] (A) put the raw material for preparing the grid into the mold and press it with the mold, and the mold includes an upper mold and a lower mold;
[0026] (B) Carrying out compression molding, the surface temperature of the upper mold is controlled at 135°C, the surface temperature of the lower mold is controlled at 140°C, the pressure is controlled at 10MPa, and the holding time is 600s;
[0027] (C) taking out the product after pressing and molding, and grinding the upper and lower surfaces to make a grid, the depth of the square holes of the gained grid is 25mm.
Embodiment 2
[0029] The grid is prepared as follows:
[0030] (A) Put the raw material SMC glass fiber composite material for preparing the grid into the mold and press it with the mold. For the specific shape of the mold, see figure 1 , including an upper mold and a lower mold. There are a plurality of protrusions 2 arranged in an orderly manner on the upper mold and the lower mold of the mold. The protrusions 2 are in the shape of a trapezoid. The cross-sectional area of one side gradually decreases;
[0031] (B) Carrying out compression molding, the surface temperature of the upper mold is controlled at 145°C, the surface temperature of the lower mold is controlled at 150°C, the pressure is controlled at 15MPa, and the holding time is 600s;
[0032] (C) Take out the product after pressing and molding, and polish the upper and lower surfaces to make a grid. For the specific shape of the grid, see Figure 2-3 , including a base plate, on which there are a plurality of square holes 1 a...
Embodiment 3
[0035] The grid is prepared as follows:
[0036] (A) Put the raw material SMC glass fiber composite material for preparing the grid into the mold and press it tightly with the mold. The mold includes an upper mold and a lower mold. There are multiple protrusions arranged in an orderly manner on the upper mold and the lower membrane of the mold. 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) Perform compression molding, the surface temperature of the upper mold is controlled at 140°C, the surface temperature of the lower mold is controlled at 145°C, the pressure is controlled at 15MPa, and the holding time is 500s;
[0038] (C) Take out the product after pressing and molding, and polish the upper and lower surfaces to make a grid. The specific shape of the grid is to include a substrate, and the substrate is provided with a plu...
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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 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 of grilles, and its main uses are rest platforms, walkways, ditch covers and step boards, etc. It can also be used in environmental protection equipment and sewage treatment. It can be seen that grilles are widely used in petrochemical, electric power, sewage treatment, etc. each field. [0003] However, in the process of preparing the grid, the prior art 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. Contents of the invention [0004] The purpose of the present invention is to provide a grid and its preparation method to solve the above problems. [0005] In an embodiment of the present invention, a method for preparing a gr...
Claims
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Application Information
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