Conical Punch Radial Compression for Paper Waste Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional paper sheet punching devices generate a significant amount of cutting waste, which is not efficiently managed, and there is a need for a device that minimizes this waste while performing the punching process effectively.
Innovation Solution
A punching device with a die and a punch unit that includes a conical tip end section and a liquid supply mechanism, where the punch unit presses the paper sheet, and after pressing, the punch is lowered to perform the punch process, reducing the amount of cutting waste by compressing the paper radially and using a liquid to soften the area for easier punching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If a conventional punching device with cylindrical punches is used, then the punching process is simple and fast, but a significant amount of cutting waste is generated
Solution Approach 1:
The punch tip shape is changed from cylindrical to conical, and the punching process is divided into pressing and cutting phases with different punch positions. This parameter change allows the paper to be compressed radially before cutting, reducing waste while maintaining process simplicity
Solution Approach 2:
The paper sheet is pressed and compressed radially by the conical punch tip before the actual cutting action. This preliminary compression action consolidates the paper fibers, allowing for more efficient cutting with reduced waste generation
2Productivity
If liquid is supplied to the punch guide hole to soften the paper, then punching efficiency is improved and waste is reduced, but the device complexity increases
Solution Approach 1:
Liquid is introduced as an intermediary substance that penetrates the paper sheet through the punch guide hole, softening the fibers to facilitate easier punching. This mediator enables more efficient cutting with less waste while the liquid supply mechanism remains relatively simple
Solution Approach 2:
A liquid supply mechanism uses hydraulic or pneumatic principles to deliver liquid through the punch guide hole to the paper sheet. This allows controlled delivery of the softening agent without requiring complex mechanical systems
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 device effectively reduces the amount of cutting waste generated during the punching process by compressing the paper radially and using a liquid to facilitate the punch process, thereby minimizing waste and improving efficiency.
Implementation Method 1
a punch that has a conical shaped tip end section and is configured to move up and down... after the sheet is pressed by the die and the pressing section, the punch that has a conical shaped tip end section process is performed by lowering the punch and bringing the tip end section into contact with the paper
Implementation Method 2
a liquid supply mechanism configured to supply a liquid capable of permeating the sheet to the punch guide hole... supplying the liquid to the punch guide hole and then the punch is lowered to perform the punch process
Data Source
AI summary
A punching device, includes a die configured to support a paper sheet and a punch unit configured to perform a punch process, wherein the punch unit includes a pressing section, a punch that has a conical shaped tip end section and that is configured to move up and down, and a punch guide hole configured to accommodate the punch and to guide the punch in up and down movement and the die includes a hole section provided in a portion facing the punch and through which the punch is passable, a die blade provided at an upper end periphery of the hole section and configured to cut the sheet in cooperation with the punch, and after the sheet is pressed by the die and the pressing section, the punch process is performed by lowering the punch while bringing the tip end section into contact with the paper.