Elastic Tube Liquid Supply Device Prevents Leakage
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Solution Overview
Problem
Existing liquid supply devices for liquid jetting devices do not effectively prevent liquid leakage when the supply device is moved relative to the jetting device, as they do not account for changes in the vertical positional relationship between the nozzle and the supply device.
Innovation Solution
A liquid supply device with an elastic tube and first and second members that can adjust their relative positions to either allow or prevent liquid flow, using a cam mechanism to ensure liquid does not leak from the nozzle even when the supply device is positioned higher than the jetting device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the liquid supply device is moved relative to the liquid jetting device while remaining connected, then the adaptability and ease of operation are improved, but liquid leakage occurs when the vertical positional relationship changes
Solution Approach 1:
The patent applies the dynamics principle by making the first member movable relative to the second member along the tube's longitudinal axis. This allows the system to adapt dynamically to changing vertical positional relationships between the liquid supply device and jetting device, preventing liquid leakage while maintaining movability. The first member can be positioned at different locations along the tube to control liquid flow based on the current vertical orientation.
2Productivity
If the first member is disposed at the first relative position to allow liquid flow, then the productivity is improved, but liquid leakage occurs when the supply device is positioned higher than the jetting device
Solution Approach 1:
The patent applies parameter changes by altering the position parameter of the first member along the tube's longitudinal axis. When the liquid supply device is positioned higher than the jetting device, the first member is moved to the second relative position to block liquid flow and prevent leakage. When the normal vertical relationship is restored, the first member returns to the first relative position to resume liquid supply, thus adapting to parameter changes in vertical positioning.
3Reliability
If a valve mechanism is added to prevent liquid leakage during movement, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent applies the self-service principle by designing the first member to be movable under the influence of gravity and its own structure, without requiring an external actuating mechanism. The first member automatically positions itself based on the vertical orientation of the tube, using the gravitational force as a natural actuator. This eliminates the need for complex valves, motors, or control systems while still achieving reliable liquid leakage prevention.
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
The solution effectively prevents liquid leakage by adjusting the position of the elastic tube's members to match the changing positional relationship, ensuring reliable operation during movement or repositioning of the supply device.
Implementation Method 1
the tube including at least in part an elastic portion that can elastically deform and be flattened
Data Source
AI summary
A liquid supply device 10 is equipped with a liquid containing chamber 16, a transport tube 15 for sending the liquid inside the chamber 16 to a liquid jetting device 20, first and second members 171 and 172 sandwiching the tube 15, and a cam 173 that determines the position of the first member 171 relative to the second member 172. The tube 15 is equipped with an elastic portion 151 that elastically deforms and is flattened. In the first rotation position, the cam 173 arranges the first member 171 such that there is a space that allows the liquid to flow inside the part 151 between the first and second members 171, 172. In the second rotation position, the cam 173 arranges the first member 171 such that the elastic portion 151 is flattened by the first and second members 171, 172, and the liquid inside cannot flow.