Printing Machine Side Frame Trough Support Rigidity
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Solution Overview
Problem
Existing side frames for printing units lack sufficient rigidity and vibration resistance, often requiring additional structural levels and complex alignments for drive motors, which complicates installation and maintenance.
Innovation Solution
A side frame design featuring a trough-like depression in the support structure that positions drive motors close to the drive connection, providing maximum rigidity with minimal material thickness, and allowing for independent drive of each printing unit cylinder pair, with a multi-part structure for enhanced accessibility and simplified handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If drive motors are arranged on additional structural levels, then the side frame can accommodate drive motors, but the device complexity and installation difficulty increase
Solution Approach 1:
The support structure integrates both the drive motor mounting function and the structural reinforcement function into a single component. The support structure with trough-like depressions combines the role of motor mounting platform and frame stiffening element, eliminating the need for separate structural levels and reducing overall device complexity.
Solution Approach 2:
The support structure serves multiple functions simultaneously: it provides structural reinforcement to the side frame, creates mounting positions for drive motors through trough-like depressions, and maintains precise alignment between drive motors and cylinder drive connections. This multi-functionality reduces the number of separate components needed.
2Ease of manufacture
If drive motors are positioned far from drive connections, then installation is simplified, but vibration and alignment errors increase
Solution Approach 1:
The support structure extends in the longitudinal dimension of the side frame, creating trough-like depressions that position drive motors close to the drive connections while maintaining structural integrity. This dimensional extension allows short motor-to-drive connections without compromising installation accessibility.
Solution Approach 2:
The support structure acts as an intermediary element between the side frame and drive motors. It provides a rigid mounting platform that minimizes vibration transmission while maintaining the structural strength of the side frame, effectively mediating between installation simplicity and vibration resistance requirements.
3Strength
If the side frame uses thicker material, then rigidity improves, but the weight and material consumption increase
Solution Approach 1:
The support structure is segmented into multiple trough-like depressions distributed along the side frame. This segmentation allows the rigidity function to be distributed across multiple localized reinforcement points rather than requiring uniform thickening of the entire side frame, reducing overall material consumption and weight.
Solution Approach 2:
The support structure provides localized reinforcement at specific positions where drive motors are mounted, rather than uniformly thickening the entire side frame. The trough-like depressions create concentrated stiffening zones exactly where needed for motor mounting and vibration resistance, minimizing unnecessary material usage in other areas.
Data Source
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AI summary
The invention relates to a side frame (02) of a printing device (01) for face-mounting printing-unit cylinders (06; 07) of four printing units (04), comprising a frame front wall (44) that is located in closer proximity to the printing-unit cylinders to be mounted, through which journals (31; 32) of the printing-unit cylinders (06; 07) or spindles being extensions of the journals can be passed and/or are passed through the frame wall side facing away from the cylinders. The side frame further comprises at least two wall sections (48) that are essentially vertically arranged on the frame wall side of the frame front wall (44) facing away from the cylinders and are integral with said frame front wall or are at least rigidly connected. In a horizontal direction, the two wall sections (48) are arranged spaced apart from one another such that the vertical planes of at least all printing-unit cylinders (06; 07) of the four printing units (4) extending through the respective rotational axes (R06; R07) of the printing-unit cylinders (06; 07) extend between the two wall sections (48). At a height arranged at a distance from the frame front wall (44) in an axial direction of the printing-unit cylinders (R06; R07), in at least one vertical area above a rotational axis (R06; R07) of a lower-most printing-unit cylinder (06; 07) and below a rotational axis (R06; R07) of an upper-most printing-unit cylinder (06; 07), the two wall sections (48) are each connected to a support structure (43) comprising at least one support element (53), which across the entire connection width between the two wall sections (48) is of rigid construction to prevent deflection in an axial direction of the printing-unit cylinders (06; 07) in that, along at least one path spanning the entire connection width and viewed in an axial direction of the printing-unit cylinders (06; 07), the support structure (43) has a homogeneous or heterogeneous total material thickness of at least 10 mm and/or the at least one support element (53) is configured as a support wall (57) having the effect of an edging or a collar, said support wall arising across the plane of a support bottom (58) in an axial direction of the printing-unit cylinders (06; 07).