Staggered Kneading Tool Arms for High-Fat Dough Mixing
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Solution Overview
Problem
Existing kneading tools are inadequate for achieving superior kneading results, particularly with high-fat or loosely bound doughs, and fail to fully exploit the capabilities of new-generation kneading machines.
Innovation Solution
A kneading tool with transverse arms inclined at angles other than 0° and 90°, featuring staggered and non-overlapping arms with blades that penetrate the dough, and a scraper member to prevent ingredient accumulation, allowing for intense mixing and efficient dough detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional kneading tools (helical, forked, diving arms) are used, then they can work with standard dough types, but they fail to achieve superior kneading results with high-fat or loosely bound doughs
Solution Approach 1:
The kneading tool is divided into multiple transverse arms (at least three arms) that are staggered along the rotation axis, with each arm having blades that can independently penetrate and knead different portions of the dough. This segmentation allows the tool to handle various dough types effectively by distributing the kneading action across multiple zones.
Solution Approach 2:
Each transverse arm is equipped with blades having specific geometric characteristics (inclination angles between 30-60 degrees, specific lengths and spacings) optimized for local kneading actions. The blades are arranged to provide different kneading intensities and directions at different locations, enabling effective handling of high-fat and loosely bound doughs with specialized local action.
2Power
If traditional kneading tools are used, then they can perform basic mixing, but they do not fully exploit the power and operating modes of new-generation kneading machines
Solution Approach 1:
The kneading tool is designed with transverse arms that can operate effectively across multiple rotation directions and speeds, utilizing the dynamic capabilities of new-generation kneading machines. The staggered arm configuration allows the tool to maintain optimal engagement with the dough throughout the rotation cycle, maximizing power utilization whether the machine operates at high speed, low speed, or in reverse.
Solution Approach 2:
The tool introduces a third dimension to kneading action by incorporating transverse arms that extend radially from the rotation axis, creating a three-dimensional kneading pattern. This multi-dimensional approach (vertical mixing plus radial and tangential components) allows full exploitation of machine power while improving kneading efficiency through more comprehensive dough engagement.
3Productivity
If transverse arms are positioned to maximize mixing action, then intense mixing is achieved, but dough may be retained on the tool surfaces
Solution Approach 1:
The blades are positioned and dimensioned asymmetrically, with specific inclinations (30-60 degrees) and varying lengths along each arm. This asymmetric configuration creates a kneading action that is optimized for both mixing intensity and dough release, preventing excessive dough accumulation on the tool surfaces while maintaining effective mixing.
Solution Approach 2:
The blade geometry and arm positioning are designed to perform preliminary dough detachment actions during each rotation cycle. The staggered arrangement ensures that as the tool rotates, different blade sections continuously engage and disengage from the dough, preventing retention before it can accumulate to problematic levels.
Data Source
AI summary
A kneading tool of a type prearranged for being mounted rotatable about an axis of rotation of a kneading machine includes: a central shaft defining a main axis; and plurality of arms transverse to said shaft, which are positioned in different orientations about the main axis and/or in different positions along said axis so as to be staggered and not overlying with respect to one another.