Magnetic Die Ejector Plate Positioning Without Opening Wear
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Solution Overview
Problem
Existing die-ejectors experience mechanical wear of web-shaped openings, leading to reduced service life and increased maintenance costs due to the mechanical movement of plates, which affects their ability to reliably reach operating positions.
Innovation Solution
A die-ejector design incorporating a magnet and spring system that interacts with anchor sections of plates to exert an attractive force, combined with a stop member to ensure precise positioning and minimize wear, allowing plates to reliably reach their operating positions without mechanical contact that causes wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pin moves through web-shaped openings to mechanically displace plates, then the plates can be moved between positions, but the web-shaped openings wear out mechanically reducing service life
Solution Approach 1:
The patent replaces the mechanical pin-through-opening displacement system with a magnetic field-based system. Magnets positioned on the drive mechanism interact with ferromagnetic material in the plates to move them between initial and operating positions without mechanical contact through web-shaped openings, thereby eliminating wear on the openings and extending plate service life.
2Measurement precision
If plates are moved mechanically by a pin through web-shaped openings, then positioning can be achieved, but wear increases maintenance costs and time
Solution Approach 1:
The magnetic field-based displacement system eliminates mechanical wear on web-shaped openings while maintaining precise positioning of plates. The magnets provide controlled attraction to move plates to specific positions without degrading the opening structures, thereby reducing maintenance frequency and time while preserving positioning accuracy.
3Manufacturing precision
If mechanical wear of web-shaped openings occurs, then plates cannot reach their determined positions accurately, but replacing plates frequently increases operational costs
Solution Approach 1:
By replacing the mechanical pin-through-opening system with a magnetic field-based system, the patent eliminates wear on web-shaped openings that degrades positioning precision. The magnets consistently attract plates to their determined positions without degradation, maintaining manufacturing precision and operational efficiency over extended periods without plate replacement.
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 extends the lifespan of die-ejector plates by ensuring they maintain accurate positioning over time, reducing maintenance needs and operational costs through the use of magnetic attraction and spring forces, which prevent mechanical wear.
Implementation Method 1
a magnet (20) and a spring system, respectively, which interacts with anchor sections (74) of the plates (56) and exerts on the plates (54) an attraction force (F′) or an impact force
Implementation Method 2
a magnet (20) and a spring system, respectively, which interacts with anchor sections (74) of the plates (56) and exerts on the plates (54) an attraction force (F′) or an impact force
Data Source
AI summary
A die-ejector (2) comprising a chamber (4) with a cover plate (40) having a passageway, a plurality of plates (56) arranged inside the chamber (4) and reciprocally movable between an initial position (58) and an operating position (60), respectively, intended to interact with the carrier to support the removal of the dies from the carrier, and a drive member (100) for moving the plates (56) to be moved from the operating position towards the initial position. The die-ejector (2) further comprises a magnet (20) and a spring system, respectively, which interacts with anchor sections (74) of the plates (56) and exerts on the plates (54) an attraction force (F′) or an impact force, respectively, directed towards the operating position, and a stop member (78) for stopping the movement of the plates (56) in the operating position, the plates abutting the stop member (78) in the operating position.