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Bottom die structure of bottle blowing die

A bottom mold and mold technology, which is applied in the field of bottom mold structure of bottle blowing molds, to achieve the effects of accelerating cooling speed, improving rapid stress index, and increasing flow rate

Active Publication Date: 2013-11-27
广东国珠模具科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The liquid leakage time of the rapid stress test of the PET bottle produced by the existing bottle blowing mold is 45-60 minutes

Method used

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  • Bottom die structure of bottle blowing die
  • Bottom die structure of bottle blowing die
  • Bottom die structure of bottle blowing die

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 and figure 2 As shown, a bottom mold structure of a bottle blowing mold includes a bottom mold 1, the bottom mold 1 is connected with a water tray 2, the inside of the bottom mold 1 is a cavity 7 in the shape of the bottom of a PET bottle, the bottom mold 1 and the water tray 2 There is a cooling water tank 3 between them, and the water transfer tray 2 is provided with a water inlet 5 and a water outlet 6 connected with the cooling water tank 3, the water inlet 5 is located at the center of the water transfer tray 2, and the water outlet 6 is located at the edge of the water transfer tray 2 , the cooling water enters the cooling water tank 3 from the water inlet 5, and flows out from the water outlet 6 after cooling the bottom mold 1. The cooling water groove 3 includes an annular groove 31 and a connecting groove 32 , the annular groove 31 is provided with multiple turns and surrounds one circle, and the adjacent annular grooves 31 are connected by t...

Embodiment 2

[0037] Such as figure 1 and figure 2As shown, a bottom mold structure of a bottle blowing mold includes a bottom mold 1, the bottom mold 1 is connected with a water tray 2, the inside of the bottom mold 1 is a cavity 7 in the shape of the bottom of a PET bottle, the bottom mold 1 and the water tray 2 There is a cooling water tank 3 between them, and the water transfer tray 2 is provided with a water inlet 5 and a water outlet 6 connected with the cooling water tank 3, the water inlet 5 is located at the center of the water transfer tray 2, and the water outlet 6 is located at the edge of the water transfer tray 2 , the cooling water enters the cooling water tank 3 from the water inlet 5, and flows out from the water outlet 6 after cooling the bottom mold 1. The cooling water groove 3 includes an annular groove 31 and a connecting groove 32 , the annular groove 31 is provided with multiple turns and surrounds one circle, and the adjacent annular grooves 31 are connected by th...

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Abstract

The invention discloses a bottom die structure of a bottle blowing die, which comprises a bottom die; a water conveying plate is connected with the bottom die; a cavity taking the shape of the bottom of a PET bottle is formed in the bottom die; a cooling water tank is formed between the bottom die and the water conveying plate; a water inlet and a water outlet, which are communicated with the cooling water tank, are formed in the water conveying plate; the water inlet is formed in the center of the water conveying plate; the water outlet is formed in one edge of the water conveying plate. The cooling water tank comprises a plurality of circles of ring grooves and connecting grooves; the ring grooves are formed in a way that one wraps another; the adjacent ring grooves are connected through the connecting groove. The cooling water tank enables cooling water to flow radially, the flow of the cooling water is increased, the cooling speed of the bottom die is increased, cooling water flowing through the circumference of the bottom die has the same flow and the same temperature, the bottom surface of the bottom die is cooled uniformly, and the quick stress index of the PET bottle can be increased greatly.

Description

technical field [0001] The invention relates to the field of bottle blowing molds, in particular to a bottom mold structure of a bottle blowing mold capable of improving the rapid stress index of PET bottles. Background technique [0002] In the carbonated beverage industry, because the beverage contains high air pressure, the bottom of the PET bottle will burst after being filled and sold in the market, which will have a negative impact on the brand and personal safety. Therefore, manufacturers have been trying to improve the prevention of bottle explosion. technical indicators. The rapid stress index is now used for inspection, and the explosion-proof performance of PET bottles is judged according to the length of the rapid stress test cracking time. The rapid stress test method is: pour normal temperature water (22 degrees) into the PET bottle to the standard liquid level, and fill it with 4.65GV gas volume, and then put the PET bottle into 0.2% NaOH solution at 22 degr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/48B29C33/04B29L22/00
Inventor 蔡天峰王叶明许增文
Owner 广东国珠模具科技有限公司