Dough Roller Mill With S-Curve Wrap Path
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Solution Overview
Problem
Existing dough shaping devices struggle to produce a consistently high-quality rolled dough sheet with uniform rolling conditions, as they often lack effective mechanisms for ensuring even stress distribution and centering of the dough strip during the rolling process.
Innovation Solution
The shaping device employs two main rollers with a large angle of wrap, accompanied by counter-pressure rollers and sensors for controlled dough flow, and a flouring device to prevent sticking, ensuring uniform rolling conditions and reproducible results. The rollers are designed with concave surfaces for centering, and driven rollers allow for adjustable rolling parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional rolling devices are used, then the dough can be processed, but uniform rolling conditions and high quality reproducible results cannot be achieved
Solution Approach 1:
The patent employs two main rollers with large wrap angles (greater than 90°, preferably greater than 180°) that wrap around the dough strip in an S-shaped configuration. This curvature arrangement ensures that both sides of the dough strip come to rest on the rollers in the same way, providing uniform rolling conditions and consistent stress distribution throughout the dough, thereby achieving high quality reproducible results.
Solution Approach 2:
The patent introduces asymmetry through the S-shaped wrapping path of the dough strip around the rollers, where the dough enters and exits at different positions relative to the roller axes. This asymmetric configuration, combined with the large wrap angles, creates uniform rolling conditions that were not achievable with conventional symmetric rolling arrangements, ensuring consistent quality and reproducibility.
2Manufacturing precision
If the wrap angle of rollers is increased, then uniform rolling conditions are achieved, but the device complexity increases
Solution Approach 1:
The patent divides the rolling function into multiple segments by using two main rollers with large wrap angles instead of a single roller pair. This segmentation allows the dough strip to be subjected to uniform rolling stress through the S-shaped wrapping path, achieving consistent quality while managing device complexity through modular roller assignments with counter-pressure rollers.
3Manufacturing precision
If multiple counter-pressure rollers are assigned to main rollers, then a large angle of wrap is achieved, but the device complexity increases
Solution Approach 1:
The patent assigns multiple counter-pressure rollers to each main roller, where these rollers serve dual functions: maintaining the large wrap angle (greater than 90°) around the main rollers and providing necessary counter-pressure for consistent rolling. This multi-functionality achieves the desired angle of wrap while managing device complexity through efficient roller utilization.
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 configuration ensures a high-quality, reproducible rolled dough sheet with uniform rolling conditions, allowing for precise control over the rolling process and preventing dough sticking, resulting in a consistent product.
Implementation Method 1
The angle of wrap is the circumferential angle of a main roller casing wall section on which the dough strip rests under a contact pressure as it is guided along the dough processing path
Implementation Method 2
both sides of the strip come to rest on one of the two main rolls in the same way, one on the outside and one on the inside. In this case, the entire sheet of dough is subjected to rolling stress
Data Source
Figure 1
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AI summary
A dough band forming device (1) forms a dough band (2) from supplied portions of dough. The device (1) has a dough portion feeding device (4), a dough rolling mill (8), and a dough band discharge device (41). According to a first aspect, the dough rolling mill (8) has at least two main rollers (12, 13) arranged one above the other, which rotate about horizontal axes of rotation (14, 14a). The main rollers (12, 13) define a dough processing path (3) such that the dough band (2) is initially guided in a pressure section between a first main roller (12) and at least one counter-pressure roller (10, 15 to 17) and subsequently in a further pressure section between a second main roller (13) and at least one counter-pressure roller (18 to 21). The dough processing path (3) has a turning point (W) between the main rollers (12, 13). The dough wrapping angle (α, β) around each of the two main rollers (12, 13) is greater than 90°.This results in a consistently high-quality rolled-out dough strip. In another aspect of the dough strip forming device (1), at least one of the rollers (10, 12) has a concave outer surface. This results in consistent dough strip guidance.