Liquid Discharging Device Motor Segmentation Torque
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid discharging devices face challenges in providing sufficient driving torque to switchable components, such as the port-switchable device, especially when ink viscosity increases, requiring higher torque that cannot be achieved without increasing motor size or gear reduction ratio, which prolongs switching motions.
Innovation Solution
A liquid discharging device design that includes a separate motor for the switcher valve, allowing independent control of torque without increasing motor size or gear reduction ratio, enabling efficient switching between the cap and pump connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the reduction ratio in gears between the conveyer motor and the port-switchable device is increased to provide greater torque, then the driving torque to the port-switchable device is improved, but the switching motion time is prolonged
Solution Approach 1:
The patent divides the driving system into two independent motors: a first motor for driving the conveyer and a second motor for driving the port-switchable device. This segmentation allows each motor to be optimized independently - the second motor can be sized appropriately for the port-switchable device without being constrained by the conveyer's torque requirements, thereby achieving fast switching motion without excessive gear reduction
Solution Approach 2:
The patent extracts the port-switchable device driving function from the conveyer motor system. By separating the second motor dedicated to the port-switchable device, the system eliminates the need for high gear reduction ratios that would be required if the conveyer motor drove both functions, thus reducing switching motion time while providing sufficient torque
2Force
If the motor size is increased to provide greater driving torque to the port-switchable device, then the torque capability is improved, but the device size and complexity are increased
Solution Approach 1:
The patent segments the motor functions by providing a dedicated second motor for the port-switchable device. This allows the second motor to be sized optimally for its specific task rather than being oversized to handle both conveyer and port-switching loads, thereby reducing overall device complexity while maintaining adequate torque capability
Solution Approach 2:
The patent applies local quality by tailoring the second motor's specifications to the specific torque requirements of the port-switchable device. Instead of using a single oversized motor for all functions, the system provides just the right amount of torque capability where needed, optimizing the motor size for its dedicated function
Data Source
AI summary
A liquid discharging device having a liquid discharging head with nozzles and a liquid discharging surface; a conveyer to convey a medium in a conveying direction; a nozzle cap movable to contact or to be separated from the nozzles; a pump; a switcher to switch connection and disconnection between the nozzle cap and the pump; a drivable device; a first motor connected to the conveyer to transmit a driving force; a second motor to drive the switcher and the drivable device; a selector to switch transmission destinations for a driving force form the second motor between the switcher and the drivable device depending on a rotating direction of the second motor; and a controller to control the second motor to rotate in one of a first direction and a second direction opposite from the first direction, is provided.