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Blowing air feed system for blow molding machine

A blow molding machine and supply device technology, which can be applied to household appliances, hollow articles, other household appliances, etc., can solve the problems of insufficient crystallization and reduced heat resistance of containers.

Inactive Publication Date: 2009-01-07
TOYO SEIKAN KAISHA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, insufficient crystallization reduces the heat resistance of the container

Method used

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  • Blowing air feed system for blow molding machine
  • Blowing air feed system for blow molding machine
  • Blowing air feed system for blow molding machine

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0056] First, refer to figure 1 and figure 2 A blow air supply device for a blow molding machine according to a first embodiment of the present invention will be described.

[0057] figure 1 It is a block diagram showing the blow air supply device of the blow molding machine according to the first embodiment of the present invention.

[0058] As shown in the figure, the blow air supply device of the blow molding machine according to the first embodiment of the present invention supplies heated blow air into a preform to form a hollow bottle container 1 . In addition, this blow air supply device has a high-pressure air source 11 , a high-pressure partition valve 12 , a heat exchanger (heater) 13 , a throttle valve 14 , a switching valve 15 , and a thermometer 27 .

[0059] The high-pressure air source 11 produces high-pressure (for example, 4MPa) blowing air.

[0060] The high-pressure separation valve 12 is located downstream of the high-pressure air source 11 to open a...

no. 2 approach 〕

[0070] Next, refer to image 3 and Figure 4 A blow air supply device for a blow molding machine according to a second embodiment of the present invention will be described.

[0071] image 3 It is a block diagram showing a blow air supply device of a blow molding machine according to a second embodiment of the present invention.

[0072] As shown in the figure, the blow air supply device of the blow molding machine according to the second embodiment of the present invention supplies heated blow air into a preform to form a hollow bottle container 1 . In addition, this blowing air supply device has a high-pressure air source 21 , a heat exchanger 22 , a high-pressure separation valve 23 , a switching valve 24 , and a thermometer 27 .

[0073] The high-pressure air source 21 produces high-pressure (for example, 4MPa) blowing air.

[0074] A heat exchanger 22 is arranged downstream of the high-pressure air source 21 to heat the blowing air.

[0075] The high-pressure separa...

no. 3 approach 〕

[0081] Next, refer to Figure 5 and Image 6 A blow air supply device for a blow molding machine according to a third embodiment of the present invention will be described. However, the same reference numerals are used for the same configuration as the second embodiment, and the description of the second embodiment is referred to.

[0082] Figure 5 It is a block diagram showing a blow air supply device for a blow molding machine according to a third embodiment of the present invention.

[0083] As shown in the figure, the blow air supply device of the blow molding machine according to the third embodiment of the present invention is different from the second embodiment in that a throttle for throttling the flow of blow air is provided between the high-pressure separation valve 23 and the switching valve 24. Flow valve 26. A fixed throttle valve with a constant flow rate is used as the throttle valve 26 . In addition, a variable throttle valve whose flow rate can be adjus...

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Abstract

The invention relates to a blow air supply unit for a blow molding machine. Therefore, inner surface distortion of a container is reduced by suppressing a temperature drop of blow air, and heat resistance of the container is increased by enhancing the degree of crystallization. The blow air supply unit for a blow molding machine for molding a hollow bottle container (1) by supplying heated blow air into a perform. The blow air supply unit has a high pressure air source (11) for generating high-pressure blow air, a high-pressure gate valve (12) for opening / closing a blow air channel in the downstream of the high-pressure air source (11), a heat exchanger (13) for heating the blow air in the downstream of the high-pressure gate valve (12), a restriction valve (14) for restricting the flow rate of blow air in the downstream of the heat exchanger (13), and a switchover valve (15) for switching over the blow air channel in the downstream of the throttle valve (14).

Description

technical field [0001] The present invention relates to a blow air supply device for a blow molding machine. In particular, this blow air supply device can suppress the temperature drop of the blow air, and can reduce the distortion of the inner surface of the container. In addition, the blow molding machine forms a hollow container by supplying heated blowing air into a preform. Background technique [0002] Containers manufactured by biaxial stretch blow molding are widely used. Thermoplastic polyester is used as the material of the container. For example, a container made of polyethylene terephthalate (PET) has excellent transparency and surface gloss, and also has impact resistance, rigidity, gas barrier properties, etc. required for a liquid container. Therefore, the above-mentioned containers are widely used as containers for beverages, seasonings, and the like. [0003] The biaxial stretch blow molding method generally includes a supply step, a blow molding step, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/58B29C49/16B29L22/00
CPCB29K2995/0041B29C49/46B29C49/783B29C2049/4638B29C49/6605
Inventor 加藤信行(死亡)根本悟松桥摄前田耕二
Owner TOYO SEIKAN KAISHA LTD