Ski Boot Shell Mold With Movable Core for Easy Demolding
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Solution Overview
Problem
Existing molds for ski boot outer shells face challenges in maintaining component position under high pressure, ensuring large interference, and efficiently removing the molded shell without damage.
Innovation Solution
A mold design featuring a core with movable parts and external shells that engage through protruding and recessed sections, using actuators and elastic loading elements to ensure secure positioning and easy shell removal, facilitated by mechanical engagement and pivoting mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mold uses movable inner core portions to facilitate extraction, then the ease of operation improves, but the device complexity increases due to additional actuators and moving parts
Solution Approach 1:
The inner core is divided into two movable portions that can be independently actuated. This segmentation allows each portion to be extracted separately from the molded shell, simplifying the overall extraction process while managing complexity through modular design
Solution Approach 2:
The inner core portions are made movable rather than fixed, allowing them to change position during the molding and extraction process. Actuators enable dynamic reconfiguration of the core portions between a first configuration (for molding) and a second configuration (for extraction)
2Manufacturing precision
If the external shells engage the constraint portion with large interference, then the manufacturing precision improves, but the force required to move the shells increases
Solution Approach 1:
The external shells are divided into multiple shells (at least two) that collectively engage the constraint portion. This distributes the interference forces across multiple contact points, reducing the force required by each individual shell while maintaining large total interference for precision positioning
Solution Approach 2:
The system transitions between different operational states: during molding, the shells engage the constraint portion with large interference for precise positioning; during extraction, the actuators move the shells to a configuration where the interference is reduced or redistributed, facilitating movement
3Reliability
If the mold components are positioned securely under high pressure, then the reliability improves, but the ease of operation worsens due to difficulty in moving components for shell removal
Solution Approach 1:
The mold system is designed with dynamic positioning capability. During the molding phase, the external shells are securely engaged with the constraint portion to maintain reliable positioning under high pressure. During the extraction phase, actuators dynamically reposition the shells to a configuration that facilitates easy removal of the molded shell from the inner core
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
Ensures secure molding under high pressure with large interference surfaces, allowing easy and damage-free removal of the molded shell, enhancing durability and efficiency.
Implementation Method 1
the mold comprises at least one elastic loading element designed to ensure, by elastic action, the mutual positioning of the at least two external shells and the core or internal component
Data Source
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AI summary
The present invention relates to mold for the production, in particular for injection or vulcanization moulding, of an outer shell of a ski boot.