Indexable Blow Molding Mold Adjusting Mechanism

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Solution Overview

Problem

Existing blow molding mold assemblies require disassembly of the third mold component to adjust the position of molding surfaces, which is inconvenient and time-consuming, especially when accommodating containers with varying volumes.

Innovation Solution

A mold assembly with indexable adjusting means that allow the molding surfaces to be altered without disassembling the third mold component, using height inserts and a height adjusting assembly with stepped segments on the mold components to adjust the position of the molding surfaces relative to the machine members, enabling the production of containers with varying longitudinal extensions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the third mold component is disassembled to adjust the position of molding surfaces, then the molding surfaces can be repositioned to accommodate different container lengths, but the adjustment process becomes time-consuming and operationally complex

Engineering Contradiction:
Improveability to accommodate different container lengthsVSAvoidconvenience of adjusting molding surfaces
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The base mold component incorporates an indexable adjusting mechanism with multiple indexed positions that allow the molding surfaces to be dynamically repositioned. This mechanism enables operators to adjust the position of the third mold component relative to the machine members without disassembly, providing adaptability for different container lengths while maintaining ease of operation through simple indexing actions.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the third mold component is disassembled to install or remove height inserts, then the longitudinal extent of the molded article can be adjusted, but the adjustment process requires removal of fasteners and disassembly of the base mold component

Engineering Contradiction:
Improveability to adjust longitudinal extent of molded articleVSAvoidtime required for adjustment
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The base mold component is pre-configured with an indexable adjusting mechanism that has predetermined indexed positions corresponding to different container lengths. Height inserts are pre-positioned at these indexed locations, allowing operators to simply index the mechanism to the desired position rather than disassembling and重新 installing components. This preliminary arrangement of adjustment positions eliminates the time-consuming disassembly and fastener removal processes.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If the position of molding surfaces is adjusted by disassembling and reassembling the base mold component, then the effective length of the mold components can be changed, but the operational efficiency is reduced

Engineering Contradiction:
Improveability to change effective length of mold componentsVSAvoidoperational efficiency of blow molding process
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The base mold component features a dynamic indexable adjusting mechanism that allows rapid repositioning of molding surfaces between multiple predetermined positions. This mechanism enables the effective length of the mold components to be changed through simple indexing operations rather than time-consuming disassembly and reassembly processes, thereby maintaining high operational efficiency while providing the adaptability needed for different container lengths.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS7338272B2Apparatus for blow molding
Publication Date: 2008.03.04 UNILOY INC
  • US7338272B2 patent drawing
  • US7338272B2 patent drawing
  • US7338272B2 patent drawing

AI summary

A mold assembly for blow molding comprises first, second and third mating mold components, molding surfaces of each of the first and second mold components being open to a mating face of the mold component and defining a portion of the exterior of an article to be molded, molding surfaces of the third mold component defining a portion of a closed end of the article to be molded, the mold assembly accepting at least one height insert selected according to a desired longitudinal extension of the molded article, and indexable adjusting means for altering the position of the molding surfaces of the third mold component to accommodate the effective longitudinal extension of the article to be molded. A blow molding machine comprises a press mechanism for operating a mold assembly and a mold assembly according to the invention, each mold component being mounted to a movable member of the press.