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A bottom mold structure of a bottle blowing mold

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: 2016-03-09
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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  • A bottom mold structure of a bottle blowing mold
  • A bottom mold structure of a bottle blowing mold
  • A bottom mold structure of a bottle blowing mold

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 mold structure of a bottle blowing mold, which comprises a bottom mold connected with a water delivery tray, a cavity in the shape of the bottom of a PET bottle is arranged inside the bottom mold, and a cooling device is provided between the bottom mold and the water delivery tray. The water tank and the water transfer tray are provided with a water inlet and a water outlet connected to the cooling water tank, the water inlet is located at the center of the water transfer tray, and the water outlet is located at the edge of the water transfer tray. The cooling water groove includes annular grooves and connecting grooves. The annular grooves are provided with multiple turns and are surrounded by one circle. Adjacent annular grooves are connected by connecting grooves. The cooling water tank provided by the present invention makes the trend of cooling water radial, increases the flow of cooling water, accelerates the cooling speed of the bottom mold, and the flow and temperature of the cooling water flowing through the circumference of the bottom mold are the same, so that the bottom mold The cooling of the bottom surface is balanced, which can greatly improve the rapid stress index of PET bottles.

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 degre...

Claims

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Application Information

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Patent Type & Authority Patents(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