Reversing Demolding Mechanism for Paper Pulp Molding
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Solution Overview
Problem
Conventional paper pulp molding devices often struggle with reliably demolding containers due to sticking issues, especially when the mold cavity design is complex, leading to interference with subsequent manufacturing processes.
Innovation Solution
A paper pulp molding device equipped with a reversing demolding mechanism and a vacuum set, featuring rotatable suction sets with enlarged vacuum suction discs to enhance the detachment of molded containers from the mold, ensuring reliable demolding and preventing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If compressed air is conducted into the channels to force the container to detach from the cavity, then the demolding process can be performed, but the container is easily stuck in the cavity when the outline of the cavity is complicated and cannot detach reliably
Solution Approach 1:
The patent replaces the conventional compressed air mechanical system with a vacuum suction system. The vacuum suction disc creates negative pressure to吸附 the container, providing a more reliable detachment force that can handle complicated cavity outlines. This substitution of mechanical principle (from positive pressure air flow to negative pressure vacuum suction) resolves the reliability issue.
Solution Approach 2:
The patent employs vacuum suction technology, which is a pneumatic principle, to create adsorption force between the vacuum suction disc and the container. By utilizing negative pressure generated through the vacuum apparatus connected via hoses to the hollow units, the system achieves reliable container detachment even from complicated cavity shapes, improving demolding reliability.
2Reliability
If the vacuum suction disc contact area is enlarged to reinforce suction force, then the demolding reliability is improved, but the device complexity increases due to additional components
Solution Approach 1:
The patent makes the suction set rotatable, allowing the vacuum suction disc to dynamically adapt its position and contact area with the container. This rotational capability enables the suction disc to maintain optimal contact regardless of container orientation or cavity shape, reinforcing suction force while keeping the mechanism adaptable rather than statically complex.
Solution Approach 2:
The vacuum suction disc serves multiple functions: it adsorbs the container for demolding, can rotate to adapt to different positions, and works with the hollow unit and hose system. This multi-functionality consolidates several potential components into an integrated system, achieving reliable suction force without proportionally increasing overall device complexity.
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
The solution effectively improves the reliability of the demolding process by reinforcing the suction force, allowing for efficient detachment of containers from the mold, thereby preventing them from being left behind and ensuring continuous manufacturing flow.
Implementation Method 1
The vacuum set has a vacuum apparatus and multiple hoses. Each hose communicates with the hollow unit of one of the sucking structures and the vacuum apparatus.
Implementation Method 2
The vacuum suction disc of each sucking structure enlarges the contact area between the vacuum suction disc and a container to reinforce the suction force produced by the vacuum apparatus.
Data Source
AI summary
A paper pulp molding device has a reversing demolding mechanism and a vacuum set. The reversing demolding mechanism has a transmission set and at least one suction set. The at least one suction set is rotatable and driven by the transmission set. Each one of the at least one suction set has multiple sucking structures. Each sucking structure has a hollow unit and a vacuum suction disc communicating with the hollow unit. The vacuum set has a vacuum apparatus and multiple hoses. Each hose respectively communicates with the hollow unit of one of the sucking structures and the vacuum apparatus. The vacuum suction disc of each sucking structure enlarges the contact area between the vacuum suction disc and a container to reinforce the suction force produced by the vacuum apparatus.