Stencil Printing Machine Multi-Drum Group Sheet Automation
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Solution Overview
Problem
Current stencil printing machines are unable to collectively print multiple kinds of printed sheets within a group unit, requiring users to manually print and sort different types of sheets, such as those for pupils and teachers, which is time-consuming and labor-intensive.
Innovation Solution
A stencil printing machine with multiple printing drums and a controller that allows users to input the quantity of each type of printed sheet per group, storing this information for the machine to perform a printing operation using one or multiple drums to produce the required sheets, enabling simultaneous printing of multiple types of sheets per group.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the stencil printing machine uses a single printing drum to print different kinds of sheets, then the device complexity is reduced, but the productivity and ease of operation deteriorate because users must manually print and sort multiple types of sheets separately
Solution Approach 1:
The printing machine is segmented into multiple independent printing drums (first printing drum, second printing drum), each capable of printing different types of sheets. This segmentation allows simultaneous printing of multiple sheet types without requiring manual intervention, thereby improving productivity while maintaining manageable device complexity through modular design.
Solution Approach 2:
Each printing drum is designed to be multi-functional, capable of printing different kinds of sheets (e.g., pupil sheets, teacher sheets) based on the stencil sheets wound around them. This universality allows the machine to handle various printing tasks simultaneously, enhancing productivity without proportionally increasing complexity.
2Productivity
If the stencil printing machine prints multiple kinds of sheets simultaneously using multiple printing drums, then the productivity is improved, but the device complexity increases due to additional drums and control mechanisms
Solution Approach 1:
The machine prepares multiple stencil sheets in advance and winds them around respective printing drums before the printing operation begins. This preliminary action allows the printing drums to be pre-configured for different sheet types, enabling simultaneous printing of multiple kinds of sheets without adding complex real-time switching mechanisms, thus improving productivity with minimal increase in device complexity.
3Manufacturing precision
If the stencil printing machine allows individual printing of each sheet type, then the manufacturing precision and control are improved, but the loss of time increases due to sequential printing and manual sorting
Solution Approach 1:
The machine merges multiple printing operations into a single simultaneous process by using multiple printing drums that operate concurrently. Each drum maintains precise control for its designated sheet type while producing multiple sheet types at the same time, thereby reducing the total printing and sorting time without sacrificing printing control accuracy.
Data Source
AI summary
A stencil printing machine is provided with a printing drum and a second printing drum. The stencil printing machine makes first and second stencil having first and second images perforated, winds the first and second stencil sheets around the first and second printing drums respectively, and presses print sheets on the first and second printing drums. The stencil printing machine includes a controller for performing a printing operation of firstly allowing the first printing drum to print the first printed sheets by a required number per one class and subsequently allowing either the second printing drum only or the first and second printing drums to print a single second printed sheet or the required number of second printed sheets. This printing operation is carried out by the controller, with respect to each class.