Printing Exchange Rack Layout for Compact Automatic Screen Changes
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Solution Overview
Problem
The existing printing devices face challenges in achieving a compact configuration for automatic exchange of exchangeable members due to the storage device being positioned in front, which obstructs operator access and space efficiency.
Innovation Solution
An exchanging unit that includes a receiving section for accommodating racks, a lifting and lowering mechanism, and a moving section to facilitate the compact storage and retrieval of exchangeable members within the printing device, eliminating the need for internal lifting mechanisms in the racks and allowing them to be housed within the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the storage device is disposed in front of the printing device for automatic exchange of exchangeable members, then the automatic exchange function is achieved, but the operator has difficulty in working at the front surface and the device occupies more space
Solution Approach 1:
The storage device is repositioned from the front surface to the rear surface of the printing device, utilizing the underutilized rear space. This spatial reconfiguration maintains the automatic exchange capability while eliminating the obstruction at the front surface, allowing operators to work freely without interference from the storage device structure.
Solution Approach 2:
The storage device is divided into functionally independent modules: the rack receiving section, the lifting and lowering section, and the moving section. This segmentation allows each component to perform its specific function efficiently while enabling the overall system to be compact and adaptable to the rear surface configuration of the printing device.
2Extent of automation
If the storage device is disposed in front of the printing device, then automatic exchange is enabled, but the printing device configuration becomes less compact
Solution Approach 1:
The rack is designed to be received within the housing of the printing device when not in use. The moving section retracts the rack into the internal space of the printing device, allowing the storage capacity to be integrated within the existing device envelope rather than adding external protrusions, thereby maintaining a compact overall configuration.
Solution Approach 2:
The storage device is relocated to the rear surface of the printing device, utilizing previously unused spatial dimensions. This repositioning allows the automatic exchange functionality to be integrated into the existing device footprint without requiring additional front surface area, thus maintaining compactness while enabling automation.
3Ease of operation
If a lifting and lowering mechanism is provided inside the accommodation rack, then exchangeable members can be lifted, but the accommodation rack becomes larger in size
Solution Approach 1:
The lifting and lowering mechanism is extracted from the accommodation rack and repositioned as a separate functional unit in the exchanging device. This externalizes the lifting function, allowing the rack to be kept compact and simple in structure, while the dedicated lifting mechanism handles the vertical movement of racks efficiently.
Solution Approach 2:
The lifting and lowering function is merged with the exchanging device structure rather than being integrated into each individual rack. This consolidation allows multiple racks to share a common lifting mechanism, reducing the overall system volume and eliminating the need for redundant lifting components in each rack.
Data Source
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AI summary
An exchanging unit is an exchanging unit for use in a printing device including a printing section configured to execute a printing process of printing a viscous fluid on a processing target object using a screen mask, and includes a receiving section configured to receive an accommodation rack having multiple shelf sections each configured to accommodate a frame that is capable of supporting an exchangeable member for use in the printing device, a lifting and lowering section configure to lift and lower the accommodation rack between an exchange position where to exchange the exchangeable member and a liftable position situated further downwards than the exchange position, and a moving section configured to move the accommodation rack between the liftable position where the accommodation rack can be lifted up by the lifting and lowering section and an accommodation position where the accommodation rack enters an interior of a housing of the printing device.