Mold Frame with Elastic Insert for Vibration Damping
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Solution Overview
Problem
Molds for producing shaped bodies, such as concrete, face limited service life due to the use of rubber or other materials that shrink during production, leading to additional stresses and vibrations between the mold frame and inserts, which reduces their effectiveness.
Innovation Solution
The mold design allows for the displacement of side parts to compensate for shrinkage, keeping the elastic insert in a stress-free state, thereby reducing vibrations and extending the mold's service life by using the mold frame's components for post-tensioning and incorporating movement means like threaded spindles or eccentrics for easy integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rubber or other materials that shrink during production are used as elastic inserts, then the mold can be produced, but the service life is limited due to additional stresses and vibrations
Solution Approach 1:
The patent applies thermal parameter changes by heating the elastic insert to a specific temperature range (80°C to 100°C) during assembly. This thermal treatment causes the insert to expand, compensating for shrinkage that would otherwise occur during production. The temperature parameter is carefully controlled to achieve the desired expansion without damaging the materials, thereby eliminating additional stresses and extending service life.
Solution Approach 2:
The patent implements preliminary action by pre-heating the elastic insert before assembly into the mold. This preliminary thermal treatment ensures the insert is in its expanded state during assembly, preventing subsequent shrinkage-related stresses. The preliminary action of heating and holding at elevated temperature before final assembly eliminates the need for post-assembly stress compensation.
2Reliability
If rubber or other materials that shrink during production are used as elastic inserts, then the mold can be produced, but vibrations between the mold frame and mold inserts increase
Solution Approach 1:
The patent uses thermal parameter changes to maintain the elastic insert in an expanded state during assembly and operation. By controlling the temperature parameter, the insert's dimensional stability is improved, reducing vibrations between the mold frame and inserts. The thermal expansion compensates for material shrinkage, ensuring consistent contact and reduced vibrational harm.
3Stability of the object's composition
If the elastic insert is already under tension after the mold has been produced, then the mold structure is stable, but the insert cannot absorb vibrations with less stress
Solution Approach 1:
The patent applies thermal parameter changes to achieve the optimal balance between structural stability and stress reduction. By heating the elastic insert to 80°C-100°C during assembly, the insert expands to fill the gap completely, creating a stable mold structure. Simultaneously, the thermal expansion prevents excessive tension, allowing the insert to absorb vibrations with reduced stress throughout its service life.
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 design extends the mold's service life by allowing it to absorb vibrations with lower stress, reducing the risk of overloading and displacement during production, and maintaining the mold's stability and efficiency.
Implementation Method 1
an elastic insert at least partially surrounding the mold insert, the insert being held in a frame-shaped intermediate space between side parts of the mold frame and the mold insert
Implementation Method 2
the connection process is accompanied by shrinkage of the insert, the side parts can be displaced relative to one another to compensate for the shrinkage
Data Source
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AI summary
The mold (1) has a mold frame (4), a mold insert (2) with a mold cavity (3) and an elastic padding (5) partially enclosing the mold insert. The padding is arranged in a frame-shaped space (16) between side sections (8a-8d) of the mold frame and the mold insert. The connection process involves the contraction of the padding and the side sections are moved towards each other for compensation of the contraction. An independent claim is also included for a method for manufacturing a mold.