Stacking system for injection molded articles

a technology of injection molded articles and stacking systems, which is applied in the field of stacking and flexible articles, can solve the problems of insufficient stability of stacks for further handling and transfer, and new challenges in post-mold handling of these containers and their accessories, and achieve the effect of effectively handling volumes of such articles

Inactive Publication Date: 2005-05-12
OHLMANN HANS ARMIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005] In view of the above, it is an object of the invention to provide a stacking system for various injection-molded or other flexible articles, capable of effectively handling volumes of such articles.

Problems solved by technology

These ever-increasing production volumes cause new challenges to the post-mold handling of these containers and their accessories, in particular with stacking and packaging, where the properties of some parts add complicating factors to the tasks at hand.
Others may stack but the stacks are not sufficiently stable for further handling and transfer.

Method used

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  • Stacking system for injection molded articles
  • Stacking system for injection molded articles
  • Stacking system for injection molded articles

Examples

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Embodiment Construction

[0022] The advent of high-speed robotic parts removal systems, for example the Viper SE (trademark) robots manufactured by Ventax Robot Inc. of Ayr, Ontario, Canada, has made maintaining the orientation of the parts throughout the transfer to the post mold stacking facility an affordable and viable option. A particularly elegant way to stack parts, presented by the end-of-arm tool of such a robotic parts removal system just outside the mold of an injection molding machine, is to hand over the parts directly into the stacking device of the invention, creating either as many stacks as there are cavities in the mold, e.g. 16, or a fraction of that number, e.g. 8 or 4, if the cycle time and other circumstances allow for multiple, sub-sequential hand-over actions. The stacks may be built up either vertically or horizontally or in any inclination, depending on favorably catering to other post-mold operations, i.e. printing, assemblies, packaging, etc.

[0023] At the core of the invention i...

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Abstract

The stacking system provides a cage having generally parallel tie bars extending longitudinally around a perimeter for the articles to be held. The ties bars are supported in at least one bracket, and have portions thereof protruding slightly inwardly from the perimeter, so as to slightly squeeze the articles placed therein and to thereby hold them.

Description

REFERENCE TO RELATED APPLICATION(S) [0001] This application is a formal application based on and claiming the benefit of provisional application No. 60 / 517,393, filed Nov. 6, 2003.BACKGROUND OF THE INVENTION [0002] This invention relates to stacking, of flexible articles, and especially to stacking of injection-molded articles as they are removed from their molds. [0003] Injection-molded articles such as thin wall containers are used as the preferred means of packaging in an ever-growing variety of applications, mainly in food and beverage producing industries. Typical examples of these containers are conical cups for yogurt, sour cream and other dairy products and round or rectangular tubs for margarine, cottage cheese and a list of other groceries. Typical examples of “accessories” to those containers are flat lids, circular or rectangular in shape, and closures, some with asymmetric shapes. The applicability of the invention is not limited to the aforementioned specific articles....

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A47F1/12
CPCA47F1/123
Inventor OHLMANN, HANS-ARMIN
Owner OHLMANN HANS ARMIN
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