Resin Container Mold Sliding for Decoration and Cap Attachment
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Solution Overview
Problem
The existing resin container manufacturing method by liquid blow molding faces inefficiencies due to the limitations imposed by the nozzle unit, which restricts decoration and cap attachment processes and limits the ejection direction and method, thereby hindering increased manufacturing efficiency.
Innovation Solution
The method involves sliding the mold to a different position after blow molding, allowing for decoration and cap attachment steps to be performed without the nozzle unit's obstruction, and using two molds to alternate the liquid blow positions for increased efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a nozzle unit is disposed on top of the mold for liquid blow molding, then the liquid filling process is simplified, but the decoration step and cap attaching step cannot be performed from the top of the mold
Solution Approach 1:
The mold is designed to be movable between two positions: a first position for liquid blow molding with the nozzle unit, and a second position for decoration and cap attachment. This dynamic repositioning allows the system to adapt its configuration based on the operational phase, resolving the conflict between simplified liquid filling and accessible decoration/cap attachment.
2Ease of manufacture
If a nozzle unit is disposed on top of the mold, then liquid blow molding is simplified, but the ejection direction and method are limited
Solution Approach 1:
The mold's ability to move between positions provides ejection flexibility. After blow molding at the first position, the mold can be opened and containers ejected while positioned appropriately, or moved to the second position for additional operations before ejection. This dynamic positioning overcomes the limitation of fixed ejection directions imposed by the nozzle unit's location.
3Device complexity
If the same mold is used for both liquid blow molding and decoration/cap attachment, then device complexity is reduced, but manufacturing efficiency is hindered by repeated mold sliding
Solution Approach 1:
The mold alternates periodically between the first position (for liquid blow molding) and the second position (for decoration and cap attachment). This periodic action allows the same mold to perform multiple functions in a cyclic manner, reducing the need for multiple dedicated molds while maintaining manufacturing efficiency through systematic operation sequences.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances manufacturing efficiency by enabling easier decoration and cap attachment processes and allowing for continuous production without the need for repeated mold sliding and returning, thereby improving overall container production efficiency.
Implementation Method 1
filling a pressurized liquid into the preform disposed in the cavity to perform blow molding
Data Source
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AI summary
Provided is a container manufacturing method of manufacturing a resin container, the method including: a preform feed step (S1) of feeding a preform (1) into a cavity (3) of a batch-type mold for blow molding (2), the preform (1) being formed into a bottomed tubular shape by a resin material; a liquid blow step (S2) of filling a pressurized liquid into a preform (1) disposed in the cavity (3); and an ejection step (S6) of ejecting a container (4) after blow molding from the cavity (3). The method further includes a mold slide step (S3) of sliding the mold for blow molding (2) to a slide position (6) that is different from a position (5) of the mold for blow molding (2) in the liquid blow step (S2).