Hydraulic Pressing Device Adjustable Stop Piston Stroke
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Solution Overview
Problem
Existing pressing devices are limited in their ability to perform pressing operations that require different levels of pressing energy, as they typically rely on fixed piston strokes and cannot efficiently adjust to varying energy needs without unnecessary travel or complex setups.
Innovation Solution
An adjustable stop mechanism is introduced in the displacement direction of the hydraulic piston, allowing for different end positions during return movement, enabling the same device to perform pressing operations with varying levels of energy by adjusting the piston stroke, and using standard pressing jaws with interchangeable configurations for different energy levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed piston stroke is used in the pressing device, then the device structure is simple, but the device cannot perform pressing operations with different energy levels efficiently
Solution Approach 1:
The patent introduces an adjustable stop mechanism that allows the piston stroke to be dynamically changed according to different pressing energy requirements. The stop can be positioned at different locations along the piston's path, enabling the same device to adapt between low-energy and high-energy pressing operations without requiring multiple specialized devices.
2Use of energy by moving object
If the piston covers a longer axial distance for high energy pressing, then high pressing energy is achieved, but unnecessary travel is provided for low energy pressing operations
Solution Approach 1:
The patent changes the stroke parameter by introducing an adjustable stop that limits the piston's return movement. By repositioning the stop, the effective stroke length is adjusted to match the specific pressing energy requirement, eliminating unnecessary piston travel and associated energy loss in low-energy operations.
3Productivity
If the stop limits the return movement of the piston, then pressing operations with different energy levels are achieved, but the device requires additional adjustment mechanisms
Solution Approach 1:
The adjustable stop mechanism is designed to be simple and self-adjusting, allowing operators to quickly reposition the stop for different pressing energy requirements without complex procedures or additional active components. The stop mechanically limits the piston return movement based on its position, providing an intuitive and efficient adjustment system.
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 solution allows for efficient execution of pressing operations with different energy levels using the same device, achieving various pressing forces while maintaining a constant end force, suitable for both low and high energy requirements, including large nominal widths, with reduced unnecessary piston travel.
Implementation Method 1
The piston of the pressing device, for the purpose of acting on the pressing jaws, is displaced hydraulically into the pressing position
Implementation Method 2
The return stroke takes place by means of a spring, which is stressed during the forward stroke
Data Source
AI summary
A method of using a hydraulically driven pressing device for pressing a fitting on a tube is provided. The pressing device includes a piston and a cylinder for acting on pressing jaws. A piston shaft is connected to rollers. The pressing device can be used to carry out pressing operations requiring different levels of pressing power, by using an adjustable stop which is provided in the direction of displacement of the piston in order to achieve different end positions for the piston during the piston return stroke.