Punch Die Retainer Collar Press-Button Locking Mechanism
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Solution Overview
Problem
Existing punch dies attached to punch holders in punch presses face challenges in safe and easy height regulation after sharpening the punch edge, as the right hand often unintentionally releases the punch head, causing it to fall out of the guide during height adjustment.
Innovation Solution
A punch die design featuring a retainer collar with a press-button and elastic member, allowing the punch head to be held and rotated by the right hand while the punch guide is tilted, preventing the punch body from falling out by engaging the press-button with dent portions on the punch guide, enabling secure height regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the punch head is held and rotated by the right hand during height regulation, then the height adjustment can be performed, but the punch head may unintentionally be released and fall out of the punch guide
Solution Approach 1:
The press-button acts as an intermediary locking mechanism between the operator's hand and the punch head. When pressed, it engages with the dent portion to lock the retainer collar in position, preventing the punch head from falling out during height regulation operations.
Solution Approach 2:
The elastic member pre-biases the press-button in the engaged position with the dent portion, creating a preliminary locking action that prevents the punch head from accidentally disengaging during operation. The lock is already in place before any accidental release can occur.
2Reliability
If the press-button is biased outward by the elastic member, then the engagement with dent portions is maintained, but the press-button requires force to be pressed for disengagement
Solution Approach 1:
The press-button is designed with dynamic characteristics, being spring-loaded to automatically engage and lock when moved to the appropriate position. The elastic member provides continuous force to maintain engagement, while the button can be easily depressed when needed for adjustment.
Solution Approach 2:
The press-button operates in a periodic manner, being pressed to disengage, moved to the desired position, and then automatically re-engages through the elastic bias, creating a repeatable cycle of locking and unlocking during height regulation operations.
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
Facilitates safe and easy height adjustment by allowing the punch head to be viewed and rotated without the risk of the punch body falling out, ensuring secure engagement and preventing unintentional disengagement during the process.
Implementation Method 1
an elastic member interposed between the punch head and the retainer collar to bias the punch driver upward along the axis
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A punch die is comprised of: a punch body comprising a punch edge portion at a lower end portion along an axis, a key projecting from an outer periphery, and a punch driver at an upper portion along the axis; a punch guide comprising an inner hollow elongated along the axis and receiving the punch body to be movable along the axis, and a keyway formed on an internal periphery of the inner hollow to extend along the axis and mesh with the key; a retainer collar rotatably combined with the punch guide at an upper end along the axis and around the axis, the punch driver passing through the retainer collar to be movable along the axis; a punch head screwed in an upper end portion along the axis of the punch driver to regulate a position of the punch driver; an elastic member interposed between the punch head and the retainer collar to bias the punch driver upward along the axis; a circular opening formed on an upper surface along the axis of the punch guide and wider than the inner hollow of the punch guide; a plurality of dent portions getting dented radially outward relative to the axis from an internal periphery of the circular opening and being mutually circumferentially spaced; and a press-button supported by the retainer collar, movable in a radial direction relative to the axis, and biased outward, the press-button comprising an engaging portion capable of engaging with any of the plurality of dent portions.