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Rotational moulding preparation process of air mover shell

A preparation process and shell technology, which is applied in the field of rotational molding preparation process of the shell of a floor blower, can solve problems such as burrs easily generated in products, and achieve the effects of reducing the probability of burrs, improving insect resistance and improving economic efficiency.

Inactive Publication Date: 2019-07-09
CRM PLASTIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing rotational molding process, because the product is easily bonded to the inner wall of the mold, the surface of the product is prone to burrs during demoulding, so it needs to be improved.

Method used

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  • Rotational moulding preparation process of air mover shell
  • Rotational moulding preparation process of air mover shell

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Embodiment Construction

[0036] The following is attached figure 1 The present invention is described in further detail.

[0037] A rotational molding preparation process for a floor blower shell, comprising the following steps:

[0038] Step 1: Adjust the speed of the mill to 5000r / min, add 55 kg of raw material particles per bag into the mill for grinding, each bag requires 25 minutes of milling time, and finally get the raw material powder;

[0039] Step 2: Add 100 g of toner to the raw material powder obtained in Step 1, then add 7 kg of waste materials of the same color, and then pour all of them into a blender and stir for 30 minutes to obtain a mixed powder;

[0040] Step 3: Evenly spray the release agent on the inside of the lower mold of the mold, weigh the mixed powder with the required weight with an electronic scale, and pour it into the lower mold of the mold;

[0041] Step 4: After the molds are combined, install the molds on the tray of the rotary frame, connect the upper mold and the...

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Abstract

The invention discloses a rotational moulding preparation process of an air mover shell. The rotational moulding preparation process comprises the following steps: S1, raw material particles are ground, and raw material powder is obtained; S2, the raw material powder, color powder and waste with the same color are all stirred, and mixed powder is obtained; S3, the mixed powder is weighed and poured into a designated lower mould; S4, the mould is placed on a rotating frame, and the rotating frame is conveyed into an oven; S5, the mould is heated, meanwhile, the rotating frame drives the mould to rotate, and the mould also rotates along the axis of the mould; S6, after the mould is baked in the oven for 1300 s, the rotating frame is conveyed out from the oven; S7, the outer surface of the mould is rapidly cooled through a coolant; and S8, the mould is opened, and a product is taken out from the mould. After baking in the oven is completed, the mould is rapidly cooled through the coolant,thus the mould is shrunk, but the product is still in an expansion state, thus the mould and the product generate relative displacement and then are easy to separate, and burrs are not prone to beinggenerated.

Description

technical field [0001] The invention relates to the field of rotomolding, in particular to a rotomolding preparation process for a floor blower shell. Background technique [0002] Rotational molding, also known as rotational molding, rotary molding, rotary molding, etc., is a hollow molding method for thermoplastics. The method is to add plastic raw materials into the mold first, then the mold is continuously rotated along two vertical axes and heated, and the plastic raw materials in the mold are gradually and uniformly coated and melted and adhered to the mold cavity under the action of gravity and heat energy. On the entire surface, it is formed into the desired shape, and then cooled and shaped to form a product. [0003] Since the process of product formation is mainly through centrifugal force and gravity, the internal structure of the mold in the rotational molding process is generally relatively simple. For this reason, many manufacturers of floor blowing machine ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C41/06B29C41/46B29C41/48B29C33/60
CPCB29C33/60B29C41/06B29C41/46B29C41/48
Inventor 陈建培
Owner CRM PLASTIC INC
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