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Quick cooling mould for plastic molding cover and processing process for threaded core

A rapid cooling and plastic molding technology, applied in the field of molds, can solve problems affecting the use of bottle caps, poor cooling of bottle caps, large shrinkage, etc., to achieve good cooling effect, not easy to deform, and reduce the molding cycle

Active Publication Date: 2016-01-06
DONG GUAN JIN FU IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As the pace of modern society continues to accelerate, a large number of plastic products appear in people's daily necessities. Due to the large-scale use of plastic products, their plastic products will still be an important part of people's production and life for a long period of time in the future. Components, for plastic containers, due to the advantages of low price, easy molding and convenient use, plastics are more and more widely used in different container industries, especially most bottled containers, such as: mineral water bottles, beverages Bottles, etc. The structure of these bottles is mainly composed of the bottle body and the anti-theft cap. At present, blow molding is mainly used for the bottle body, and injection molding and compression molding are mainly used for the anti-theft cap. Among them, injection molding is suitable for small batches. Production, its production per minute is about 10PCS. Compression molding is generally used for mass production, and it can produce about 900-1000PCS bottle caps per minute. However, due to the production of compression molding equipment, it mainly depends on the upper mold and The lower mold is pressed and formed, and then the upper mold is mainly used for cooling and demoulding. Based on the current production efficiency, if the production cycle is further accelerated, it will often cause poor cooling of the bottle cap, and then a large shrinkage rate will affect the bottle cap. The use of the cover, at present, the production efficiency of compression molding can only reach 1100PCS / min at most, in view of this, the inventor has improved the mold structure after repeated tests and demonstrations

Method used

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  • Quick cooling mould for plastic molding cover and processing process for threaded core
  • Quick cooling mould for plastic molding cover and processing process for threaded core
  • Quick cooling mould for plastic molding cover and processing process for threaded core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This processing technology includes the following steps:

[0057] S1. Raw material is carried out rough machining molding and reserve processing allowance, forms threaded core semi-finished product; At this moment, because the internal stress of raw material is bigger, in this step, the inner wall allowance of described threaded core semi-finished product is 1.2mm, and the remaining part The machining allowance is 0.4mm, which can prevent the inner part of the threaded core semi-finished product from being deformed due to large internal stress;

[0058] S2. The thread core semi-finished product is subjected to heat treatment; the heat treatment includes quenching, first high-temperature tempering, second high-temperature tempering, third high-temperature tempering and deep rapid cooling. After the quenching, the hardness of the thread core semi-finished product reaches 48HRC, the temperature of the first high-temperature tempering, the second high-temperature temperin...

Embodiment 2

[0064] This processing technology includes the following steps:

[0065] S1. Raw material is carried out rough machining molding and reserve processing allowance, forms threaded core semi-finished product; At this moment, because the internal stress of raw material is bigger, in this step, the inner wall allowance of described threaded core semi-finished product is 1.6mm, and the remaining part The machining allowance is 0.5mm, which can prevent the inner part of the threaded core semi-finished product from being deformed due to large internal stress;

[0066] S2. The thread core semi-finished product is subjected to heat treatment; the heat treatment includes quenching, first high-temperature tempering, second high-temperature tempering, third high-temperature tempering and deep rapid cooling. After the quenching, the hardness of the thread core semi-finished product reaches 49HRC, the temperature of the first high-temperature tempering, the second high-temperature temperin...

Embodiment 3

[0072] This processing technology includes the following steps:

[0073] S1. The raw material is rough-machined and the machining allowance is reserved to form a threaded core semi-finished product; at this time, due to the large internal stress of the raw material, in this step, the inner wall allowance of the threaded core is 1.8 mm, and the rest of the processing The margin is 0.6mm, which can prevent the inside of the threaded core from being deformed due to large internal stress;

[0074] S2. The thread core semi-finished product is subjected to heat treatment; the heat treatment includes quenching, first high-temperature tempering, second high-temperature tempering, third high-temperature tempering and deep rapid cooling. After the quenching, the hardness of the thread core semi-finished product reaches 50HRC, the temperature of the first high-temperature tempering, the second high-temperature tempering and the third high-temperature tempering is 590 degrees Celsius, t...

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Abstract

The invention relates to the technical field of moulds and particularly discloses a quick cooling mould for a plastic molding cover. The quick cooling mould comprises a threaded core, wherein the threaded core is provided with a first accommodating cavity; a molding insert is arranged in the first accommodating cavity; a water transporting regulating assembly is further arranged between the molding insert and the threaded core; a cooling gap is formed between the water transporting regulating assembly and the inner wall of the first accommodating cavity; the forming insert is connected with a cooling water tube; the water transporting regulating assembly is provided with a water inlet and a water outlet; cooling water of the cooling water tube sequentially passes through the molding insert, the water inlet, the cooling gap and the water outlet; and a water outlet channel communicating with the water outlet is arranged between the outer side of the cooling water tube and the threaded core. The cooling mould disclosed by the invention is good in cooling effect, the molding period is shortened, and the production efficiency is improved. The invention further discloses a processing process or the threaded core. The processing process has the advantages of being simple in process, easy to manufacture and high in strength of the threaded core.

Description

technical field [0001] The invention relates to the technical field of moulds, in particular to a rapid cooling mold for a plastic molding cap and a processing technology for a threaded core. Background technique [0002] As the pace of modern society continues to accelerate, a large number of plastic products appear in people's daily necessities. Due to the large-scale use of plastic products, their plastic products will still be an important part of people's production and life for a long period of time in the future. Components, for plastic containers, due to the advantages of low price, easy molding and convenient use, plastics are more and more widely used in different container industries, especially most bottled containers, such as: mineral water bottles, beverages Bottles, etc. The structure of these bottles is mainly composed of the bottle body and the anti-theft cap. At present, blow molding is mainly used for the bottle body, and injection molding and compression ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/36B29C43/52B29C43/50B23P15/00
Inventor 陈金培陈小恒
Owner DONG GUAN JIN FU IND CO LTD
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