Molding Unit Attachment System with Spring-Loaded Locking Mechanism
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Solution Overview
Problem
Existing molding unit attachment systems require tools for loosening and tightening screws, leading to inefficiencies and risks such as dropped screws or forgotten retightening, and are not suitable for locking parts that slide relative to each other.
Innovation Solution
A system with a fixed stop and a mobile locking device that moves between active and inactive positions, utilizing a spring-and-ball, latch-and-catch hole, or plate spring mechanism for automatic return, allowing for tool-free attachment and detachment of interchangeable parts without screwing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws and tabs with slots are used for attachment, then the interchangeable part can be securely fixed to the support, but tools are required for loosening and tightening, leading to increased operation time and risk of errors
Solution Approach 1:
The locking device is designed to automatically lock the interchangeable part into position without requiring manual intervention or tools. The spring mechanism self-actuates upon insertion, and the release mechanism allows tool-free removal, making the system serve itself rather than requiring external tools for both locking and unlocking operations
Solution Approach 2:
The attachment system transitions from static screw fixation to dynamic spring-based locking that automatically adjusts upon insertion. The mobile locking device moves between locked and unlocked positions, providing adaptive fixation that is both secure and rapidly deployable without manual tool operation
2Reliability
If screws are used for attachment, then the interchangeable part can be firmly secured, but there is risk of dropping screws or forgetting to retighten them
Solution Approach 1:
The spring-loaded locking device automatically secures the interchangeable part upon insertion without requiring manual screw tightening. The system self-actuates through the spring mechanism, eliminating the human error risks associated with manual screw operations such as dropping screws or forgetting to retighten them
Solution Approach 2:
The manual screw-and-tab mechanical system is replaced with an automatic spring-based mechanical system. This substitution eliminates the need for manual intervention entirely, replacing error-prone human operations with a reliable automated mechanical mechanism that consistently secures the part without human error
3Ease of operation
If a mobile locking device with elastic return means is used, then tool-free operation is achieved, but the system is not suitable for locking parts that slide relative to each other
Solution Approach 1:
The attachment system is divided into two independent functional components: a fixed stop element that handles the sliding/positioning function, and a mobile locking device that handles the securing function. This segmentation allows each component to specialize in its respective function, enabling the locking device to work tool-free while the stop element manages the sliding part accommodation
4Productivity
If rapid attachment is implemented without screws, then changeover time is reduced, but the security and stability of the attachment may be compromised
Solution Approach 1:
The spring locking device is pre-positioned and pre-loaded before the interchangeable part is inserted. Upon insertion, the spring automatically actuates to lock the part in place, eliminating the need for post-installation tightening or adjustment operations. This preliminary preparation enables both rapid changeover and secure attachment simultaneously
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
Enables rapid and secure attachment of interchangeable parts, reducing changeover time from minutes to seconds, improving production rates and enabling the production of various container shapes without the need for specialized tools.
Implementation Method 1
a spring-and-ball system, comprising a compression spring with an end pressing against the ball, said spring constituting said elastic return means
Implementation Method 2
a latch and catch hole system comprising a compression spring with an end pressing against the latch, said spring constituting said elastic return means
Data Source
AI summary
The invention relates to a molding unit attachment system enabling the attachment of at least one interchangeable molding part (11) into a seating arranged on a support (12) of a complementary shape. Said system comprises, on one of the sides of said interchangeable part (11) which is parallel to its axis, at least one fixed device (2) acting as a stop, and on the other side, a mobile locking device (3) which moves between an active locking position and an inactive locking position. The mobile locking device (3) comprises an elastic return means for automatically returning it from said inactive locking position to said active locking position, the locking device (3) being able to be manually placed in inactive position by an operator. The system is noteworthy in that it comprises on one of the sides of said interchangeable part (11) which is parallel to its axis, at least one fixed device (2) acting as a stop, the mobile locking device (3) being positioned on the other side of the interchangeable part.