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Method and device for manufacturing chalk

A manufacturing method and technology of chalk, applied in non-active pencils, printing, writing utensils, etc., can solve the problems of inapplicability and inability to achieve smooth demoulding, and achieve the effects of high yield, low cost, and simple operation

Inactive Publication Date: 2007-10-24
李树本
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For cylindrical chalk with uniform diameter, the traditional mold cannot achieve smooth demoulding, so it is not suitable

Method used

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  • Method and device for manufacturing chalk
  • Method and device for manufacturing chalk
  • Method and device for manufacturing chalk

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Chalk manufacture method of the present invention comprises the steps:

[0022] 1. Mix the chalk stock solution;

[0023] 2. Prepare the chalk master mold, including bringing together at least two half molds and connecting them with bolts;

[0024] 3. Pouring the chalk stock solution into the cavity of the main mold;

[0025] 4. Place to make the chalk liquid solidify;

[0026] 5. Open the mold and take out the chalk.

[0027] Wherein in step 3, in order to make the chalk stock solution fill the mold cavity more evenly, a vibrating device can be used to make it evenly filled. In order to ensure that the chalk stock solution does not flow out of the mold cavity, two guard plates can be added on both sides of the main mold to reduce the loss of the chalk stock solution. In step 4, the solidification of the chalk stock solution can also be accelerated by heating and drying to improve efficiency.

[0028] Special main mold in the manufacture method of chalk of the pres...

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PUM

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Abstract

The invention relates to the making of a chalk using molds. The mold has at least two halves with each fixed by bolts. It is cheap, simple in operation and high in yield rate.

Description

technical field [0001] The invention relates to a chalk manufacturing method and a used device. Background technique [0002] Traditional chalk is mostly formed by molds in the manufacturing process. The early molds were mostly brass molds. In order to facilitate demoulding, the mold cavities of the molds were all truncated cones, so the formed traditional chalks were mostly truncated cones. The dust-free chalk that has appeared in recent years has improved the formulation process of chalk, and the manufacturing process has also been improved. Most of them are formed by extrusion, especially for cylindrical chalk with uniform diameter, the method of extrusion molding is widely used. [0003] However, after repeated experiments by the inventors, it was found that the extrusion molding method is not practical because the yield is too low, because when the mixed raw materials are extruded through the extruder, when extruding horizontally, it is easy to appear that the length do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43K19/00
Inventor 李树本
Owner 李树本