Motor-Driven Dough Trolley Cloth Puller

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Solution Overview

Problem

Existing trolleys for introducing dough blanks into multi-level ovens require significant manual effort and typically need two operators, limiting flexibility and efficiency in handling and placement.

Innovation Solution

A trolley with independent motor-driven cloth pullers for each storage level, allowing individual control and operation, along with a rechargeable battery for power and a control device for centralized or decentralized motor control, enabling single-operator operation and flexible handling of dough blanks under varying conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual cloth-lifting devices are used to load dough blanks into multi-tiered ovens, then the equipment structure remains simple, but significant physical effort is required and two operators are always needed

Engineering Contradiction:
Improvemanual effortVSAvoidequipment structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The trolley is divided into multiple independent storage levels, each with its own motor-driven cloth puller. This segmentation allows each level to be operated independently, reducing the physical effort required per operator while maintaining a manageable overall structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from static manual operation to dynamic motor-driven operation. Each storage level has an independently controllable motor that can be activated as needed, providing adaptable automation that reduces manual effort without requiring complete system complexity.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If a common motor drive is used for all cloth removal devices, then the device structure is simplified, but flexibility in handling different baking conditions is reduced

Engineering Contradiction:
ImproveflexibilityVSAvoiddevice structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The common motor drive is segmented into individual motors for each storage level. This allows each level to be controlled independently, enabling flexible response to different baking conditions (different times, temperatures) while keeping each motor unit relatively simple in structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Each storage level has its own motor with independent control, allowing local adaptation to specific baking requirements. Different levels can operate with different speeds, timings, or even be deactivated entirely based on local baking needs, providing versatility without requiring complete system redesign.

Inventive Principle:
Principle #3Local quality

3Adaptability or versatility

If all cloth removal devices are moved simultaneously by a common drive, then the operation process is simplified, but the ability to respond to individual baking requirements is limited

Engineering Contradiction:
Improveindividual controlVSAvoidoperation complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The simultaneous movement system is segmented into independently controllable motors at each storage level. Operators can now select which levels to activate and when, allowing individual control for different baking requirements while maintaining straightforward motor operation without complex coordination mechanisms.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from rigid simultaneous operation to dynamic selective operation. Each storage level can be activated independently based on real-time baking needs, providing adaptability while keeping the control mechanism simple through individual motor switches or basic control interfaces.

Inventive Principle:
Principle #15Dynamics

4Adaptability or versatility

If the entire trolley is pushed into the oven for loading, then the device structure remains fixed and simple, but flexibility in placement and handling is reduced

Engineering Contradiction:
Improveplacement flexibilityVSAvoiddevice structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The fixed trolley structure is segmented into independently movable storage levels. Each level can be extended or retracted independently via its own motor, allowing flexible placement of dough blanks at different positions and times without requiring the entire trolley to be moved, while maintaining a relatively simple base structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The static trolley structure becomes dynamically adaptable. Storage levels can be extended or retracted as needed, providing placement flexibility for different oven configurations and baking requirements while keeping the overall device structure simple through modular design.

Inventive Principle:
Principle #15Dynamics

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

Significantly reduces manual effort, allows single-operator operation, and enhances flexibility in meeting different baking conditions by enabling independent control of each cloth puller, improving the efficiency and ease of introducing dough blanks into multi-level ovens.

Implementation Method 1

each storage level (5) has at least one motor (7) for moving the respective cloth removal device (6) back and forth between its starting position and its end position

Methodology Applied
Scientific EffectElectromagnetic conversion: Electromagnetic Induction

Implementation Method 2

The invention also provides that the carriage has at least one rechargeable battery to supply the motors of the storage levels with electrical current

Methodology Applied
Scientific EffectElectrochemical energy storage: Battery (electricity)

Data Source

PatentEP4082344B1Trolley for introducing pieces of dough to be baked
Publication Date: 2023.06.07 ERNST DREXEL KG
  • EP4082344B1 patent drawingFigure 1~4
  • EP4082344B1 patent drawingFigure 5~10
  • EP4082344B1 patent drawingFigure 11~14

AI summary

Cart (1) for placing dough blanks to be baked into a multi-level oven (2), wherein the cart (1) has running wheels (3) and a base frame (4) movably mounted on the running wheels (3) and storage levels (5) arranged one above the other on the base frame, wherein in each of the storage levels (5) a cloth puller (6) of the cart (1) is motor-driven and mounted so that it can be moved back and forth between a starting position retracted maximally into the cart (1) and a final position extended maximally out of the cart (1), wherein each storage level (5) has at least one motor (7) for moving the respective cloth puller (6) of this storage level (5) back and forth between its starting position and its final position.