Form Press for Meat Products Using Feedback Control
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Solution Overview
Problem
Prior art form presses use open loop systems, leading to overpressing of meat products due to a hydraulic cylinder driven to a predetermined press position without control, resulting in inconsistent product shapes and dimensions.
Innovation Solution
A form press with three die assemblies operated under position control and then force/position control, utilizing a single hydraulic circuit and proportional directional valves controlled by a controller to ensure precise pressure and position management, preventing overpressing and achieving consistent product shapes and dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an open loop system with a hydraulic cylinder driven to a predetermined press position is used, then the pressing operation is simple to operate, but overpressing occurs and manufacturing precision deteriorates
Solution Approach 1:
The patent implements a closed-loop control system that uses sensors to detect the actual press position and force, comparing these values with predetermined setpoints. The controller automatically adjusts the hydraulic cylinder operation based on this feedback, preventing overpressing while maintaining consistent product shapes and dimensions, thus resolving the contradiction between operational simplicity and manufacturing precision.
2Manufacturing precision
If a closed loop control system with sensors and proportional directional valves is implemented, then manufacturing precision improves, but device complexity increases
Solution Approach 1:
The patent employs feedback control through sensors that monitor press position and force, with the controller automatically adjusting operations based on detected values. This achieves high manufacturing precision while managing complexity through automated control rather than manual intervention.
Solution Approach 2:
The patent replaces manual mechanical control with an automated control system comprising a controller, sensors, and proportional directional valves. This substitution achieves precise control of the hydraulic cylinder while managing system complexity through electronic automation rather than complex mechanical linkages.
3Manufacturing precision
If three die assemblies are operated under position control and then force/position control, then manufacturing precision improves, but device complexity increases
Solution Approach 1:
The patent implements feedback control for each of the three die assemblies, with sensors detecting position and force values that are fed back to the controller. The controller manages each die assembly's operation through proportional directional valves, achieving consistent three-dimensional forming while automating the complex control process.
Solution Approach 2:
The patent applies a unified control approach where the single controller manages all three die assemblies using the same feedback control methodology. This universal control strategy achieves comprehensive three-dimensional forming precision while avoiding the need for separate complex control systems for each die assembly.
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 solution enables controlled three-dimensional forming of meat products with maximum yield at minimum operating costs, preventing overpressing and ensuring consistent product shapes and dimensions, while being user-friendly and efficient.
Implementation Method 1
a hydraulic cylinder that is used to drive the die
Implementation Method 2
apply a pressing force to the meat product to deform the meat product by compression
Data Source
AI summary
In an embodiment, a form press includes three die assemblies which form press a meat product along the height, width and length thereof. Each die assembly includes a single proportional directional valve which operates a hydraulic cylinder under control of a controller. The three die assemblies are first operated under position control, and are thereafter operated under force/position control. The form press has a single hydraulic circuit which operates the die assemblies.