Eccentric Cam Carriage Head Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional inkjet recording apparatuses face challenges in securely positioning and adjusting the ink head, leading to time-consuming mounting and dismounting processes, potential loss of printing quality due to head displacement or wobbling, and difficulty in maintaining a consistent nozzle distance to the recording medium.
Innovation Solution
A carriage design featuring an eccentric cam and rotation regulator that allows the ink head to be immovably positioned without screws, using a sub housing that contacts the cam and is regulated by rotation and sliding regulators to prevent rotation and wobbling, ensuring a stable nozzle distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the head is secured with screws to the carriage, then the head is firmly fixed and does not drop off, but mounting or dismounting the head becomes time-consuming and complex
Solution Approach 1:
The carriage structure is divided into a main housing and a sub-housing that can be separately assembled and disassembled. The head is mounted on the sub-housing, which can be quickly attached to or separated from the main housing without requiring screw operations, thus reducing mounting and dismounting time while maintaining head fixation stability during operation.
Solution Approach 2:
The sub-housing is designed with movable engagement features that allow quick attachment and detachment from the main housing. During operation, the sub-housing is firmly held in place, but when adjustment is needed, it can be quickly moved or removed without time-consuming screw operations.
2Manufacturing precision
If the head is secured with screws to the carriage, then the head position is stable, but handling the screw-loosened head during fine adjustments becomes complex
Solution Approach 1:
By separating the head mounting structure into a modular sub-housing unit, fine adjustments can be performed by simply manipulating the sub-housing as a whole unit rather than dealing with loose screws and individual components, thus improving ease of operation while maintaining position stability.
Solution Approach 2:
The sub-housing acts as an intermediary component between the head and the main carriage. It provides a stable mounting interface that simplifies adjustment operations by allowing the head to be adjusted through sub-housing manipulation rather than direct screw operations on the head itself.
3Ease of operation
If the head is not secured with screws to the carriage, then mounting and dismounting is quick and simple, but the head may be displaced downward under its own weight, reducing nozzle distance to recording medium and losing printing quality
Solution Approach 1:
The engagement structure between sub-housing and main housing is designed to automatically lock into a precise position when attached, ensuring consistent nozzle distance without requiring screws. The dynamic engagement features maintain stable positioning during operation while allowing quick attachment and detachment.
Solution Approach 2:
The sub-housing and main housing are designed with self-aligning and self-locking features that automatically ensure correct positioning and consistent nozzle distance when the components are attached, eliminating the need for screw fastening while maintaining printing quality.
4Ease of operation
If the head is not secured with screws to the carriage, then mounting and dismounting is quick and simple, but the head may wobble during carriage movement, making constant nozzle distance impossible and losing printing quality
Solution Approach 1:
The engagement structure between sub-housing and main housing incorporates dynamic stabilizing features that firmly secure the head during carriage movement without requiring screws. The design allows quick attachment and detachment while preventing head wobble through engineered engagement surfaces and positioning mechanisms.
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 solution simplifies the positioning of the ink head, prevents loss of printing quality by maintaining a consistent nozzle distance and reducing wobbling, and allows for easy adjustment without the need for screw-fastening, enhancing the overall printing process.
Implementation Method 1
an eccentric cam rotatably disposed in the main housing... a sub housing that makes contact with a cam face of the eccentric cam and is movable upward and downward relative to the main housing in response to rotation of the eccentric cam
Data Source
AI summary
This disclosure is directed to securing, with a simple structure, a head to a position in a carriage without having to fasten screws so as to prevent possible loss of a desired printing quality. A carriage is provided that includes a main housing mounted to a printing unit body, an eccentric cam rotatably disposed in the main housing, a sub housing that holds a head that ejects ink droplets. The sub housing makes contact with a cam face of the eccentric cam and is movable upward and downward relative to the main housing in response to rotation of the eccentric cam. The carriage further includes a rotation regulator that regulates rotation of the sub housing around a rotating shaft of the eccentric cam.