Bent Hook-in Leg Printing Plate Feed Device
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Solution Overview
Problem
Large-format printing forms pose challenges in handling due to their size, requiring careful positioning on forme cylinders to avoid damage to the forms and printing unit components during assembly and disassembly.
Innovation Solution
A feed device with a bent attachment leg at its leading end, featuring a flat support with a hanging edge and holding devices, allows for secure alignment and locking of the printing form, enabling reliable and safe feeding to the forme cylinder, utilizing a roller bar with adjustable pressing elements for support and a conveyor system for automated movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large-format printing forme is fed manually to the forme cylinder, then the printing forme can be positioned on the cylinder, but the risk of damage to the forme and printing unit components increases due to handling difficulties
Solution Approach 1:
A feed device is introduced as an intermediary mechanism between the operator and the large-format printing forme. This feed device includes a support structure with a hanging edge that receives the bent attachment leg of the printing forme, and a conveyor device that automatically transports the forme to the forme cylinder, eliminating direct manual handling of the large forme while ensuring reliable positioning
Solution Approach 2:
The bent attachment leg of the printing forme is pre-configured to engage with the hanging edge of the support structure before feeding. This preliminary preparation allows the forme to be securely held in place during the feeding process, preventing accidental displacement or damage while the conveyor device transports it to the cylinder
2Manufacturing precision
If holding devices are added to secure the printing forme on the support, then positioning accuracy improves, but the device complexity increases
Solution Approach 1:
Holding devices are implemented only at specific critical locations where the bent attachment leg engages with the support structure, rather than throughout the entire support surface. This localized approach provides sufficient positioning accuracy for the feeding operation while keeping the overall device structure simple and manageable
3Reliability
If a conveyor device is used to automatically feed the printing forme, then feeding reliability improves, but the device complexity and initial setup requirements increase
Solution Approach 1:
The feed device is segmented into distinct functional modules: a support structure with hanging edge for receiving the forme, holding devices for securing the bent attachment leg, and a conveyor device for automated transport. This modular segmentation allows each component to be simple and easy to understand, while their combination provides reliable automated feeding functionality
Data Source
Figure 1
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Figure 4
AI summary
The device (9) has a support including an engagement edge that extends in a side of the support along axial direction of a form cylinder (2). A holding unit holds a printing mold (16) that is guided to the cylinder, where the holding unit is designed as a clamping piece that is connected with a shaft. The mold is locked in the engagement edge that is formed on a slot, where the locking of the printing mold is remotely controlled. The clamping piece is pivoted from a position to release the slot to another position to hold a suspension leg of the mold by a rotational movement of a shaft.