Punching Device Non-Compressible Ejecting Unit
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Solution Overview
Problem
Conventional punching devices face difficulties in manufacturing and inserting an elastic ejecting member with a complex pattern, especially for thin segments, which leads to insufficient accommodation and deformation issues during the punching process.
Innovation Solution
A punching device with a non-compressible ejecting unit comprising a non-flexible plastic material, connecting rods, and a horizontal plate, which allows for the ejection of cutout portions by utilizing a spring to restore the punch to its upper position, preventing the cutout from being raised and ensuring proper ejection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an elastic ejecting member with a complex pattern is used to match the cutout portion, then the cutout can be ejected, but the manufacturing and insertion of the ejecting member becomes difficult and the accommodating space becomes insufficient for deformation
Solution Approach 1:
The ejecting member is divided into multiple independent elastic fingers instead of a single complex elastic component. Each finger can be manufactured separately and is simpler in structure, yet collectively they provide the necessary ejection force for complex cutout patterns. This segmentation reduces manufacturing difficulty while maintaining ejection reliability.
Solution Approach 2:
The patent introduces a vertical dimension by positioning the elastic fingers above the cutout portion and utilizing vertical downward motion for ejection. This dimensional approach allows the ejecting mechanism to operate from a different spatial direction, reducing the horizontal accommodating space requirements while maintaining effective ejection function.
2Force
If the elastic ejecting member is compressed during punching, then it can push the cutout portion out, but the accommodating space becomes insufficient and deformation issues occur
Solution Approach 1:
The elastic fingers are designed to be dynamically compressible during the punching process. As the punch descends, the fingers are compressed vertically, storing elastic energy. This dynamic compression allows the system to generate sufficient ejection force without requiring excessive static accommodating space, as the space requirement varies with the punching cycle rather than being constantly large.
Solution Approach 2:
The elastic fingers are pre-positioned in a ready state above the cutout portion before punching begins. This preliminary positioning allows the accommodating space to be minimized during non-operational phases, while the fingers are already prepared to deliver ejection force immediately when the punch completes its cutting action.
3Stability of the object's composition
If a non-compressible ejecting unit is used, then the cutout portion can be prevented from being raised, but the ejection mechanism becomes more complex
Solution Approach 1:
The non-compressible ejecting unit combines multiple functional elements into an integrated structure: the ejecting element, connecting rods, horizontal plate, and vertical plate are merged into a single coordinated mechanism. This consolidation provides stable cutout positioning while avoiding the need for separate complex components, as the unified structure achieves stability through its internal geometric constraints rather than multiple independent elements.
Solution Approach 2:
The connecting rods and horizontal plate serve as intermediary elements that transmit the ejection force from the vertical plate to the ejecting element. These intermediaries allow the non-compressible structure to maintain stability while still enabling controlled ejection motion, distributing the mechanical functions across multiple simple components rather than requiring a single complex non-compressible element.
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 effectively addresses the challenges of complex pattern cutting by ensuring the cutout portions are properly ejected without deformation issues, even for intricate designs, by using a non-compressible ejecting unit that integrates with the punch mechanism to facilitate smooth operation and accurate ejection.
Implementation Method 1
at least one spring urging the punch for restoring the punch from the lower position to the upper position
Implementation Method 2
the elastic ejecting member 93 elastically pushes the cutout portion of the workpiece 9 out of the accommodating space 920
Data Source
AI summary
A punching device includes: a base including a die part that has a top wall; an abutting member connected to the base; a punch supported on the base, movable relative to the die part and the abutting member between upper and lower positions; and an ejecting unit supported on the base and including a non-compressible ejecting element disposed above and adjacent to the top wall of the die part. The punch is movable relative to the ejecting unit at least during movement of the punch from a middle position to the lower position. The ejecting unit abuts against the abutting member at least when the punch is disposed at the upper position.