Wedge-Shaped Fine Centering Unit for Mold Alignment
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Solution Overview
Problem
Existing fine centering units for molding devices are complex, costly, and prone to accuracy loss due to multiple components and full cross-sectional penetration, which increases wear and reduces reliability in aligning mold halves during molding processes.
Innovation Solution
A wedge-shaped fine centering unit design with a sloping end face that allows only a partial cross-sectional introduction into the guide channel, providing a longer centering path and reducing wear through soft entry, while maintaining a compact and stable structure with adjustable sliding surfaces and lubricant features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If known sliding guides are used with full cross-sectional penetration, then the guide elements can be firmly connected, but wear increases and reliability decreases
Solution Approach 1:
The guide element is designed to penetrate only partially into the guide channel (approximately half the cross-sectional area) rather than fully penetrating. This partial penetration reduces wear and improves reliability while maintaining sufficient connection strength through the distributed contact area of the sliding surfaces.
2Manufacturing precision
If complex fine centering units with multiple components are used, then centering accuracy can be achieved, but device complexity and cost increase
Solution Approach 1:
The guide element integrates multiple functions into a single component: it provides rough centering through its overall position, fine centering through the wedge-shaped sliding surfaces, and structural support through its rigid construction. This merging of functions reduces device complexity and cost while maintaining centering accuracy.
Solution Approach 2:
The guide element features localized wedge-shaped sliding surfaces with specific geometric properties (inclined faces) that provide fine centering functionality only where needed, while the rest of the structure provides general support and positioning. This localized specialization achieves high precision without requiring complex mechanisms throughout the entire device.
3Stability of the object's composition
If guide elements penetrate fully into guide channels, then stable connection is achieved, but wear on mold components increases
Solution Approach 1:
The guide element penetrates only partially into the guide channel, engaging approximately half the cross-sectional area. This partial penetration maintains stable connection through the distributed sliding surfaces while significantly reducing wear on the mold components compared to full penetration designs.
4Ease of operation
If traditional sliding guides are used, then centering function is provided, but the centering path is short and friction is high
Solution Approach 1:
The guide element incorporates wedge-shaped sliding surfaces with inclined faces that extend the centering path in the vertical dimension. As the mold halves close, the inclined surfaces guide the elements through a longer progressive path, reducing friction and improving ease of operation compared to traditional short-centering designs.
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 wedge-shaped design enhances the reliability and accuracy of mold alignment, reduces material consumption and production costs, and minimizes wear on mold and machine components, enabling precise centering with reduced friction and abrupt movements.
Implementation Method 1
the first guide element is at least partially in the Guide channel slides
Data Source
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AI summary
The unit (34) has guide elements (13a,13b,31a-31d) having two sliding faces that are coupled with two mold elements (3,5). The guide element (5) includes guide passages (33a-33C) that are arranged complementarily to sliding faces of the guide element (13a,13b). The guide elements (13a,13b) are partially slid in the guide passages, when opening and closing the mold elements. A wedge-shaped end (14) of the guide elements (13a,13b) is arranged opposite to the mold element (3) and inserted into guide passages, for magnification of the sliding faces having inclined end face. The fine centering unit has the inclined end face whose angle of inclination with a parting plane of the mold elements is set within a range of 10-45 [deg] . A tap-shaped portion with the wedge shaped end is immersed into the guide passage during fine centering. The guide elements (13a,13b) are provided with a guide pin and a carrier element that are coupled with one another. The lubricating agent recesses are formed between the sliding faces. An independent claim is included for molding apparatus (1) that includes fine centering units and an opening and closing mechanism to open and close the mold elements. The mold elements are provided with recesses (15a,15b,29a-29d) that are coupled to receive the guide elements.