Encapsulation Mold Rubber Anti-Slip Blocks Glass Fixation
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Solution Overview
Problem
Encapsulated glass is prone to crushing during the injection molding process due to movement and uneven pressure distribution, especially when glasses with different curvature tolerances are processed, leading to a high breakage rate.
Innovation Solution
An encapsulation mold with a clamping device featuring rubber anti-slip blocks on both the upper and lower molds, which deform to apply opposing forces and buffer the glass, ensuring secure fixation and accommodating varying curvature tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a movable lifter is used to clamp the glass, then the glass can be fixed during injection molding, but the glass may be crushed due to rigid contact and uneven pressure distribution
Solution Approach 1:
The patent introduces rubber anti-slip blocks as intermediary elements between the movable lifter and the glass surface. These rubber blocks deform under pressure to provide uniform contact and distribute the clamping force evenly across the glass surface, preventing localized stress concentration that causes crushing. The rubber material acts as a mediator that combines fixation capability with protective cushioning.
Solution Approach 2:
The patent changes the physical state and mechanical properties of the clamping surface from rigid (metal lifter) to flexible (rubber material). The rubber blocks can deform and adapt their shape to match the glass curvature, changing the pressure distribution parameters from concentrated to uniform. This parameter change allows the system to maintain fixation reliability while eliminating the crushing problem.
2Strength
If the movable lifter is made hard to bear huge impacts, then the glass can withstand injection molding pressure, but the glass may get crushed due to rigid contact
Solution Approach 1:
The patent changes the material parameter of the contact surface from hard/rigid to soft/flexible by using rubber anti-slip blocks. This parameter change allows the system to absorb impact forces through elastic deformation rather than rigid contact, maintaining strength while preventing glass crushing through the compliant nature of rubber material.
Solution Approach 2:
The patent applies beforehand cushioning by placing rubber blocks between the lifter and glass before the injection molding process begins. These rubber blocks are pre-positioned to provide cushioning protection, allowing them to absorb and distribute impact forces during the molding process before any crushing can occur.
3Adaptability or versatility
If the glass has large curvature tolerance, then different batch glasses can be processed, but the pressure concentrates on certain points causing glass breakage
Solution Approach 1:
The patent changes the contact interface from rigid to flexible, allowing the rubber blocks to deform and adapt to various curvature profiles. This parameter change enables the system to accommodate different curvature tolerances while maintaining uniform pressure distribution, preventing stress concentration and glass breakage across different batches.
Solution Approach 2:
The patent applies local quality by using multiple rubber anti-slip blocks distributed across the glass surface. Each rubber block independently deforms to match the local curvature at its position, ensuring uniform pressure distribution across the entire glass surface regardless of curvature variations. This localized adaptation prevents pressure concentration at any single point.
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 encapsulation mold effectively prevents glass breakage by distributing forces uniformly and compensating for curvature tolerances, reducing the breakage rate even for larger glasses with significant curvature variations.
Implementation Method 1
a first rubber anti-slip block fixed to a joint surface of the upper mold, and a second rubber anti-slip block fixed to a joint surface of the lower mold, wherein the first rubber anti-slip block has a first surface and the second rubber anti-slip block has a second surface, and when the upper mold is pressed against the lower mold, the first rubber anti-slip block and the second rubber anti-slip block overlap at least in part
Implementation Method 2
the encapsulation mold effectively prevents glass breakage by distributing forces uniformly and compensating for curvature tolerances
Data Source
AI summary
An encapsulation mold is provided, which may include an upper mold, a lower mold and a clamping device. The clamping device includes a rubber anti-slip block fixed to a joint surface of the upper mold, and a rubber anti-slip block fixed to a joint surface of the lower mold, wherein both of the rubber anti-slip blocks can fix the glass tightly. Therefore, after the upper mold and the lower mold are pressed against each other, these rubber anti-slip blocks may deform and apply a couple of forces having opposite directions to the glass. Under this couple of forces, the glass can be completely fixed in the encapsulation mold, which can avoid glass to be crushed caused by glass moving during injection molding. Meanwhile, because these rubber anti-slip blocks are elastic, they can play an anti-slip role and prop the glass, which may prevent the glass 40 from breakage.