Cutting and Stamping Device with Common Upper Knife Bridge
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Solution Overview
Problem
Existing devices for trimming and punching products, such as brochures, require multiple steps and machines for edge trimming, double blank separation, and special punching, leading to inefficiencies and increased processing time.
Innovation Solution
A device with a common upper knife bridge that can be operated in a lifting movement, allowing for simultaneous three-sided trimming, double blank separation, and special punching in three processing stations, using knives and tools attached to the bridge for edge trimming, head and foot trimming, and special punching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate machines are used for edge trimming, double blank separation, and special punching, then each operation can be performed with dedicated tools, but the processing time increases and productivity decreases
Solution Approach 1:
The patent combines multiple separate machines (edge trimming machine, double blank separation machine, and special punching machine) into a single integrated device. The upper knife bridge carries knives for edge trimming, double blank separation, and special punching tools simultaneously, allowing all operations to be performed in one pass through three processing stations, thereby increasing productivity while maintaining operation quality
Solution Approach 2:
The upper knife bridge is designed as a universal carrier that can hold and operate multiple different tools for different functions (edge trimming knives, separation knives, and special punching tools) simultaneously. This multi-functional design allows a single device to perform multiple operations that previously required separate dedicated machines
2Reliability
If multiple separate machines are used for different operations, then each machine can be optimized for its specific function, but the device complexity and space requirements increase
Solution Approach 1:
The patent merges multiple separate machines into one integrated device with a common upper knife bridge that carries all necessary tools. The device includes three processing stations with corresponding knives and tools attached to the upper knife bridge, reducing the number of separate machines from three to one while maintaining specialized functionality for each operation
3Manufacturing precision
If multiple processing steps are used for trimming and punching operations, then each step can be performed with stationary tools, but the processing time and loss of time increase
Solution Approach 1:
The patent enables continuous processing by moving the product through three processing stations in sequence, with each station performing its operation while the product is in motion. The upper knife bridge moves synchronously with the product, allowing edge trimming, double blank separation, and special punching to be performed continuously in one pass rather than in separate stationary steps, thereby reducing processing cycle time while maintaining cutting accuracy
Data Source
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AI summary
The device comprises a common upper knife carrier, which is operated in a stroke movement. A knife is attached at the upper knife carrier for head cutting (10), foot cutting (9), and front edge cutting (6) of the products (16). The device has a cutting station (17) for the front edge cutting and another cutting station (18) for the head and foot cutting. The device has a third cutting station (19), in which special punching is provided by a special punching tool (15) at the products. An independent claim is also included for a method for finishing of bound or attached products of paper sheets.