Plastic Squeezing Press Roller Structure Against Twisting Failure
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Solution Overview
Problem
Existing squeezing press rollers made of aluminum are prone to damage due to material micro-shrinkages and inadequate construction, leading to frequent breakage and twisting under bending and twisting forces, necessitating costly detection and frequent replacement.
Innovation Solution
A one-element plastic construction for the roller with a lengthwise rectangular-shaped body and internal stiffening fins, featuring cylinder-shaped tips and a non-centrally located socket for the pressing pipe, enhances strength and resistance to bending and twisting forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If aluminum casting is used for roller construction, then manufacturing is easier, but material micro-shrinkages occur causing frequent breakage and twisting
Solution Approach 1:
The patent changes the material parameter from aluminum casting to thermoplastic material (such as polypropylene or polyamide), fundamentally altering the material properties to eliminate micro-shrinkage defects while maintaining ease of manufacturing through injection molding processes
Solution Approach 2:
The patent employs composite construction by integrating multiple functional elements (roller body, stiffening fins, socket, mandrel, clamp) into a single thermoplastic component, creating a composite structure that combines strength, stiffness, and durability while avoiding the defects of traditional aluminum casting
2Device complexity
If traditional roller construction is used, then manufacturing is simpler, but bending and twisting forces cause roller damage
Solution Approach 1:
The patent divides the roller body into segmented sections with internal stiffening fins that partition the internal space, creating a cellular structure that resists bending and twisting forces while maintaining overall structural integrity
Solution Approach 2:
The patent adds internal stiffening fins that extend in the lengthwise direction, creating a three-dimensional reinforcement structure within the two-dimensional roller cross-section, thereby significantly increasing resistance to bending and twisting forces
3Quantity of substance
If aluminum casting is used for rollers, then initial production cost is lower, but detection of micro-shrinkages requires significant costs
Solution Approach 1:
The patent uses thermoplastic material that can be economically manufactured through injection molding, creating rollers that are inherently free of casting defects, eliminating the need for expensive specialized detection equipment while maintaining cost-effectiveness
Data Source
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AI summary
The subject of this invention is a squeezing press roller, especially a squeezing press roller of a cleaning kit. The roller is made as one element plastic construction and has lengthwise rectangular-shaped body (1) which is square in section, whose bottom side is open, and inside the body (1) is located an internal stiffening structure, composed of intersecting fins (2) slant to the lengthwise body (1) axis and interconnecting body (1) walls (3), The central part of the body is closed on its both sides with flat round planes (4) which are perpendicular to the lengthwise body (1) axis, and on both ends the body (1) is ended with cylinder-shaped tips (5) with fins on the surface in the form of lengthwise projections (6) forming splines, and on the body (1) the socket (7) is non-centrally located, closer to one round plane (4), perpendicular to the lengthwise axis of the body (1), whereas the socket (7) is cylinder-shaped located within the body (1), whereas the mandrel (8) seated in the socket (7) base is centrally located inside the cylinder.