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Gas-assisted dip molding mold and molding method

A molding method and mold technology, applied in the direction of coating, etc., can solve the problems of uneven product surface, uneven thickness, and inability to realize airtight structure products, etc.

Active Publication Date: 2021-03-16
厦门石地医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a gas-assisted immersion molding mold and molding method to solve the problem that the current traditional molding process cannot achieve a closed structure product, and the surface of the product is uneven and the thickness is uneven

Method used

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  • Gas-assisted dip molding mold and molding method
  • Gas-assisted dip molding mold and molding method
  • Gas-assisted dip molding mold and molding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] refer to figure 1 , is a cross-sectional view of Embodiment 1 of a gas-assisted dip molding mold provided by the present invention, including:

[0050] mold cavity 1;

[0051] The mold cover 2 is mated and connected with the mold cavity 1 to form a cylindrical airtight chamber with the mold cavity 1;

[0052]The feed channel 3 is arranged on the mold cover 2 and communicates with the cylindrical closed chamber and the liquid slurry;

[0053] The air inlet passage 4 is arranged on the mold cover 2 and communicates with the cylindrical airtight chamber and the high-pressure gas.

[0054] Preferably, the mold cover body 2 is provided with two microchannels H, and the feed channel 3 and the air inlet channel 4 are respectively and independently penetrated through the two microchannels H.

[0055] Specifically, the feeding channel 3 includes a feeding needle tube 31 and a feeding pintle 32 , and the air inlet channel 4 includes an inlet needle tube 41 and an inlet pintle ...

Embodiment 2

[0065] refer to figure 2 and Figure 8 , is a cross-sectional view of Embodiment 2 of a gas-assisted dip molding mold provided by the present invention, including:

[0066] mold cavity 1;

[0067] The mold cover 2 is mated and connected with the mold cavity 1 to form a cylindrical airtight chamber with the mold cavity 1;

[0068] The feed channel 3 is arranged on the mold cover 2 and communicates with the cylindrical closed chamber and the liquid slurry;

[0069] The air inlet passage 4 is arranged on the mold cover 2 and communicates with the cylindrical airtight chamber and the high-pressure gas.

[0070] Preferably, the mold cover 2 is provided with a microchannel H, the feed channel 3 is nested in the air inlet channel 4 and passes through the one microchannel H, and the one micropore The track H is arranged in the center of the mold cover 2 .

[0071] Specifically, the feeding channel 3 includes a feeding needle tube 31 and a feeding pintle 32 , and the air inlet ch...

Embodiment 3

[0081] refer to image 3 and Figure 4 and Figure 8 , which is a structural schematic diagram of Embodiment 3 of a gas-assisted dip molding mold provided by the present invention, including:

[0082] mold cavity 1;

[0083] The mold cover 2 is mated and connected with the mold cavity 1 to form a cylindrical airtight chamber with the mold cavity 1;

[0084] The feed channel 3 is arranged on the mold cover 2 and communicates with the cylindrical closed chamber and the liquid slurry;

[0085] The air inlet passage 4 is arranged on the mold cover 2 and communicates with the cylindrical airtight chamber and the high-pressure gas.

[0086] Preferably, the mold cover 2 is provided with a microchannel H, the feed channel 3 is nested in the air inlet channel 4 and passes through the one microchannel H, and the one micropore The track H is arranged in the center of the mold cover 2 .

[0087] Specifically, the feeding channel 3 includes a feeding needle tube 31 and a feeding pint...

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Abstract

The invention provides a gas-assisted plastic dipping molding die and a molding method. The gas-assisted plastic dipping molding die includes a die cavity, a die cover body, a feeding channel and an air inlet channel; the die cover body is connected with the die cavity in a matched manner, and a closed cavity is formed by the die cavity and the die cover body; the feeding channel is arranged on the die cover body and communicates with the closed cavity and liquid slurry; and the air inlet channel is arranged on the die cover body and communicates with the closed cavity and high pressure gas. The gas-assisted plastic dipping molding method comprises the steps that die assembling is carried out, the certain amount of liquid slurry is injected into the die through the feeding channel, the high pressure gas is led into the die through the air inlet channel, the die is heated, after a product is completely shaped, the die is cooled, die opening is carried out, and the product is taken out.By means of the gas-assisted plastic dipping molding die and the molding method, sealing product molding which cannot be achieved by traditional plastic dipping, blow molding, slush molding and othertechnologies is achieved; compared with a traditional plastic molding process, the surface sink mark of the product can be reduced, and the surface quality of the product can be improved; the warpagedeformation is reduced, and the flow streak flaws are reduced; and the molding time is shortened, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of plastic dipping products, in particular to a gas-assisted plastic dipping mold and a molding method. Background technique [0002] Dip molding is a commonly used plastic product molding method. The process mainly includes five processes: preheating, dipping, plasticizing, cooling, and demoulding. The dip molding process can be used to form many special-shaped structures, but because the process essentially dips the mold into a dipping tank filled with dipping liquid, coats the dipping liquid on the outer surface of the mold, and then solidifies it. It is determined that the traditional dipping process is difficult to realize the molding of structures such as airtight balloons. [0003] The blow molding process is another method of forming special-shaped structures. The process is generally as follows: put the extruded or injected tubular parison with a certain temperature in the split blow mold, close the mold, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C41/38B29C41/04B29C41/36B29C41/52
CPCB29C41/045B29C41/36B29C41/38B29C41/52
Inventor 段庆生
Owner 厦门石地医疗科技有限公司
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