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A method and apparatus for post-mold cooling a molded article

A technology for controlling cooling and molding, applied in the field of post-molding cooling and equipment for molded objects

Active Publication Date: 2015-06-10
HUSKY INJECTION MOLDING SYST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] With increasingly faster molding cycle times, it is not always possible to resolve said defects with simple adjustments to the cavity geometry in the holder, since adjusting the geometry for one defect can have the effect of making another defect more prominent impact

Method used

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  • A method and apparatus for post-mold cooling a molded article
  • A method and apparatus for post-mold cooling a molded article
  • A method and apparatus for post-mold cooling a molded article

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Embodiment Construction

[0032] image 3 is an injection molding system 110 according to a non-limiting embodiment of the present invention. The molding system 110 is similar to the known molding system 10 including the post-molding devices 12 , 15 described above. The molding system 110 further comprises temperature control means 20 for controlling the temperature of the holders 50 on the post-moulding device 15 in order to avoid transferring cooling-related defects to the molded object 2 .

[0033] The method according to an embodiment of the invention comprises balancing the parts 2', 2", 2'" of the molded object 2 (as referred to Figure 2B shown) to substantially reduce defects in molded articles associated with post-molding cooling.

[0034] The balance of cooling rates between the parts 2', 2", 2'" is preferably controlled so that each of the parts 2', 2", 2'" of the molded article reaches substantially the same time at substantially the same time. The corresponding ejection temperature of t...

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PUM

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Abstract

A method for post-mold cooling a molded article (2). The method comprises minimizing a temperature differential in the molded article (2) at a transition between a first portion (2') of the molded article (2) arranged in a holder (50) of a post-mold device (15) and a second portion (2") of the molded article (2) that is outside of the holder (50) by controlling the temperature of the holder (50). The controlling of the temperature of the holder (50) includes selecting the temperature of the holder (50) to be between 35°C and 65°C.

Description

technical field [0001] The present invention generally relates to, but is not limited to, a method, molding machine and computer readable product for post-mold cooling of a molded article comprising balancing cooling between portions of the molded article rate to, among other things, substantially reduce defects of the molded article related to post-molding cooling. Background technique [0002] Some injection molded articles, such as various plastic preforms used for blow molding into beverage bottles, for example, require extended cooling periods to solidify into a substantially defect-free molded article. The productivity of injection molds (ie, lower cycle times) could be increased if cooling of the molded article could be achieved outside the injection mold by one or more post-molding devices. Various such post-molding devices and associated methods are known and have proven effective for the optimization of injection molding machine cycle times. [0003] In a typical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C49/64B29C45/72B29C45/78B29C49/78
CPCB29C35/16B29C45/7207B29C45/78B29C2035/1616B29C2045/7214B29C2045/725B29C2945/76531B29C2945/76769B29C2945/76782B29C2945/76806
Inventor 乔基姆·约翰尼斯·尼韦尔斯
Owner HUSKY INJECTION MOLDING SYST LTD