Molding Die Link Bar Mechanism for Template Exchange
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Solution Overview
Problem
The existing three-plate molding die lacks the ability to set separate molding die opening amounts for molding and exchanging operations, leading to a high center of gravity during template exchange, which compromises safety and workability.
Innovation Solution
A molding die with a lock member, upper and lower link bars, a restriction member, and a drive part that allows for separate setting of molding die opening amounts by restricting the lock member's movement, enabling a minimal opening distance for exchanging operations while maintaining a larger opening for molding, thus reducing the center of gravity and improving safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the molding die opening amount is set to enable template exchange, then the center of gravity becomes high, but safety and workability deteriorate
Solution Approach 1:
The patent applies dynamics by making the molding die opening amount adjustable between two states: a first opening amount for template exchange and a second opening amount for normal molding. The link bar mechanism dynamically changes the opening amount based on the position of the lock pin, allowing the system to adapt to different operational requirements and maintain low center of gravity during exchange operations.
2Ease of operation
If an external operation mechanism is provided to lift templates, then the required height is achieved, but installation space and manufacturing cost increase
Solution Approach 1:
The link bar mechanism serves multiple functions: it controls the molding die opening amount, supports template exchange operations, and maintains structural stability. By making this existing component multi-functional, the patent avoids adding separate external operation mechanisms, thereby reducing device complexity and installation space while achieving the desired template positioning.
Solution Approach 2:
The system uses its own existing link bar and lock pin mechanisms to achieve template exchange functionality. The lock pin automatically engages with different positions on the link bar to control the opening amount, making the system self-regulating without requiring external operation mechanisms, thus reducing complexity and cost.
3Ease of operation
If the molding die opening amount is increased for template exchange, then the exchanging jig can be inserted, but the center of gravity location becomes high
Solution Approach 1:
The patent dynamically adjusts the molding die opening amount based on the operation type. During template exchange, the lock pin engages with the first position to provide sufficient opening for jig insertion. During normal molding, the lock pin moves to the second position to reduce the opening amount and lower the center of gravity, thus resolving the contradiction between jig accessibility and center of gravity position.
Data Source
AI summary
A molding die has a lower holder, an intermediate holder, an upper holder, a lock member, an upper link bar, a lower link bar, a restriction member, and a drive part. A movement of the lock member in a molding die opening direction or a molding die closing direction is restricted by the intermediate holder. The upper link bar has a first retaining groove in which the lock member fits when being located at a molding die closing position. The lower link bar has a second retaining groove in which the lock member fits and a release portion that enables the lock member to be released from the first retaining groove. The restriction member is movable between a restriction position that prevents the lock member from fitting in the second retaining groove and a free position that enables the lock member to fit in the second retaining groove.