Press Machine Slide Cushion Device Pressure Control
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Solution Overview
Problem
Conventional slide cushion devices for press machines have issues with adjusting the number and placement of cushion pins, leading to increased pressure and residual pressure during forming, which affects the formability of high-tensile steel plates and increases the complexity and cost of the device.
Innovation Solution
The integration of hydraulic cylinders into the press machine's slide or board allows for adjustable cushion pins and controlled hydraulic pressure, reducing the number of components and enabling constant pressure control without increasing pressure during forming, thus enhancing formability and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple rod-less cylinders are fitted into the base plate to provide cushion function, then the cushioning effect is improved, but the number of components increases and the base plate thickness increases
Solution Approach 1:
The patent integrates multiple hydraulic cylinders into a single base plate structure, merging what would traditionally be separate rod-less cylinder components into one unified hydraulic system. This reduces the number of individual components while maintaining the cushioning function through centralized hydraulic pressure control.
Solution Approach 2:
The patent replaces mechanical rod-less cylinders with a hydraulic pressure system that uses fluid pressure to provide the cushioning effect. This hydraulic approach eliminates the need for multiple mechanical cylinders, reducing component count while achieving the same cushioning purpose through pressure-controlled piston movement.
2Object-affected harmful factors
If gas enclosed type rod-less cylinders are used for cushion function, then the cushioning effect is improved, but pressure increases during press forming and residual pressure remains after forming
Solution Approach 1:
The patent changes the physical state and controllability of the cushioning medium from gas (in rod-less cylinders) to hydraulic fluid. This allows for dynamic parameter control where pressure can be adjusted during press forming and completely released after forming, eliminating residual pressure issues while maintaining cushioning effectiveness.
Solution Approach 2:
The patent transitions from pneumatic/gas-based cushioning to hydraulic-based cushioning. The hydraulic system provides superior pressure control capabilities, allowing pressure to be maintained during forming and then fully discharged afterward, preventing the residual pressure problems associated with gas-enclosed systems.
3Area of stationary object
If the number of rod-less cylinders is increased to match die size, then the cushion coverage is improved, but the base plate thickness and device complexity increase
Solution Approach 1:
The patent consolidates multiple cushioning functions into a single base plate with integrated hydraulic cylinders. Instead of increasing the number of separate rod-less cylinder components (which would increase base plate thickness), the hydraulic system provides distributed cushioning coverage through a unified structural approach.
Solution Approach 2:
The base plate is designed as a multi-functional component that simultaneously provides structural support and integrated cushioning functionality through embedded hydraulic cylinders. This universal design allows the base plate to serve multiple purposes without requiring additional thickness or separate components for each cushioning location.
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 appropriate adjustment of cushion pins and controlled pressure, reducing stress on materials and preventing unintentional deformation, while also simplifying the device design and reducing costs by minimizing the number of components and eliminating the need for a hydraulic pump.
Implementation Method 1
a plurality of hydraulic cylinders 110 that generates cushion pressure
Data Source
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AI summary
A slide cushion device 100 includes: a hydraulic cylinder group 110 integrally formed in a board 102 provided immediately below a slide 14; a pressing member 120 that is disposed in a recessed portion of an upper die 20 that vertically moves together with the slide 14, in a vertically movable manner; a plurality of slide cushion pins 122 that is provided in the pressing member 120 and penetrates the upper die 20 to be brought into contact with a piston member 112 of the hydraulic cylinder group 110, wherein a number of the cushion pins is less than a number of hydraulic cylinders disposed in a plane of projection of the recessed portion; and a slide cushion hydraulic device 150 that controls hydraulic pressure to be supplied to a compression chamber of the hydraulic cylinder with which a slide cushion pin 122 is to be brought into contact.