Tool-Free Presser Plate Mounting for Faster Die Cutting Changeovers
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Solution Overview
Problem
Conventional presser plate mounting systems in die cutting machines are labor-intensive and time-consuming, leading to significant downtime due to the need for tool-based fastening and frequent replacement of presser plates across multiple blanking stations with different processes.
Innovation Solution
A presser assembly that allows for quick attachment and detachment of presser plates or boards without tools, utilizing a rail system with upper and lower channels to clamp the presser plate in place, eliminating the need for screws or fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional screw fastening system is used to attach presser plate to rail, then secure mounting is achieved, but installation time and labor intensity increase significantly
Solution Approach 1:
The patent removes the fasteners (screws) from the mounting system entirely. The presser plate is designed with a tapered edge that slides into a corresponding tapered receptacle on the rail, creating a fastenerless connection that is both quick to install and secure during operation.
Solution Approach 2:
The tapered interface acts as an intermediary mechanism between the presser plate and rail. The taper geometry provides both guidance during insertion and mechanical interlocking to secure the mounting, replacing the need for separate fastening elements.
2Adaptability or versatility
If multiple presser plates are frequently replaced across different blanking stations, then process adaptability is improved, but downtime increases due to tool-based fastening
Solution Approach 1:
By eliminating fasteners entirely, the system enables rapid plate changes without tools. Operators can quickly swap presser plates between different blanking stations, improving adaptability to various carton profiles while minimizing downtime and maintaining high productivity.
Solution Approach 2:
The mounting system transitions from a static fastened state to a dynamic quick-change state. The tapered interface allows the presser plate to be rapidly inserted and secured, enabling frequent changes between different blanking processes without significant downtime.
3Reliability
If tool-based fastening system is used, then secure attachment is achieved, but labor intensity and complexity increase
Solution Approach 1:
The patent completely removes the need for tools and fasteners by using a tapered interference fit between the presser plate edge and rail receptacle. This simplifies the mounting operation to a single sliding motion, dramatically improving ease of operation while maintaining secure attachment through the geometric interlock.
Data Source
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AI summary
A presser assembly is provided in which a presser plate or presser board mounting adapter is clamped to a lower end of a presser stem. A rail having a lower channel and an upper channel is provided for clamping the presser plate or presser board mounting adapter to the stem, and more particularly, a presser foot coupled to the lower end of the stem. The present invention allows the presser plate or the presser board mounting adapter to be mounted to the stem without the use of tools or fasteners.