Heating Drum Limb Deviation via Movable Claw Groove
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Solution Overview
Problem
Conventional heating drums experience limb part deviation relative to the main body part when heated at high temperatures, leading to irregular rotation and potential limb part fall-off due to thermal expansion, which affects the stability and efficiency of medium drying processes.
Innovation Solution
A configuration where the limb part is fitted to a cut-out part of the main body part with a claw part freely movable in a groove, utilizing hole parts for attachment and weight reduction, and alternating cut-out parts to maintain alignment and prevent deviation, ensuring secure coupling without external fixing tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the heating drum is heated at high temperature to improve medium transporting speed, then the drying efficiency is improved, but the main body part expands due to thermal expansion causing the limb part to deviate from the main body part
Solution Approach 1:
The groove part is designed with a width larger than the hook part, creating a gap that accommodates thermal expansion. This parameter change allows the limb part to maintain proper alignment with the main body part even when heated to high temperatures, preventing deviation while enabling high-temperature operation for improved productivity
Solution Approach 2:
The connection between the limb part and main body part is segmented into movable components (hook part and groove part) rather than a rigid fixed connection. This segmentation allows each part to move independently to accommodate thermal expansion while maintaining their functional relationship, resolving the contradiction between high-temperature operation and alignment stability
2Stability of the object's composition
If the limb part is securely attached to the main body part, then the structural stability is improved, but the manufacturing complexity increases due to the need for precise fitting and multiple hole parts
Solution Approach 1:
The connection structure uses a dynamic movable fitting between the hook part and groove part rather than a static rigid connection. This dynamic design secures the limb part to the main body part while accommodating thermal movement, achieving structural stability without requiring overly complex manufacturing precision
Solution Approach 2:
The hole parts serve multiple functions: they attach the claw part to the limb part, provide pathways for fitting tools during assembly, and reduce the overall weight of the limb part. This multi-functionality achieves secure attachment and structural stability while simplifying the manufacturing process by consolidating multiple requirements into single features
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
This configuration effectively suppresses limb part deviation, enhances working safety during maintenance, and maintains efficient rotation, even at high temperatures, while allowing for easier attachment and visual inspection through hole parts, thereby improving the overall stability and efficiency of the heating drum and ink-jet printing device.
Implementation Method 1
the main body part is expanded by heat
Data Source
Figure 1
Figure 2
Figure 3(A)
AI summary
To provide a heating drum which even when heated at a high temperature, is capable of suppressing the limb part from being deviated relative to the main body part, and an ink-jet printing device equipped with such a heating drum. The present invention relates to a heating drum D which in order to guide a long-sized medium and also to heat and dry the medium, is provided with a cylinder shaped main body part 1, disc-shaped limb parts 2 attached to the two end parts of the main body part 1, and a shaft core 3 attached to the limb part 2 are installed, and the heating drum D further has a structure in which, on the edge of the inner circumferential surface of the main body part 1, a cut-out part 1a that extends in the circumferential direction is formed and a groove part 1c that extends in the circumferential direction is formed on the inner circumferential surface on the inner side from the cut-out part 1a of the main body part 1, wherein the cut-out part 1a and the groove part 1c are in parallel with each other, and the limb part 2 is fitted to the cut-out part 1a, with the claw part 4 being fixed to the limb part 2 by a fitting tool 5, so that a hook part 4a of the claw part 4 is freely movably fitted to the groove part 1c, and an ink-jet printing device I having such a heating drum D.