Printbar Locking Mechanism for Impact Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing printing devices with non-traversable printbars lack sufficient restraint to prevent movement due to impact forces, leading to potential damage to print heads and caps during transportation or accidental impacts, which can render the devices inoperable.
Innovation Solution
A locking mechanism is introduced that engages the printbar in a capping position, using a lock operably coupled to the frame to restrict movement along the printbar path, combined with a service station for cleaning and capping the printbar, which includes a cap made of compliant material to protect the print heads from contaminants and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the printbar is made movable to allow capping and cleaning operations, then the print heads can be protected and maintained, but the printbar becomes vulnerable to unintended movement from impact forces during transportation
Solution Approach 1:
The lock arm is positioned and configured to preemptively counteract impact forces before they can cause unintended printbar movement. The lock arm engages with the printbar in advance, creating a restraining force that opposes potential movement from drops, bumps, or shakes during transportation or storage.
Solution Approach 2:
The compliant cap material absorbs and cushions impact forces before they can damage the print heads. The service station positions the cap over the printbar in advance, creating a protective barrier that mitigates the effects of accidental impacts during handling and transportation.
2Device complexity
If no locking mechanism is used, then the device structure remains simple, but the printbar can move unintentionally during transportation causing damage
Solution Approach 1:
The lock arm is spring-loaded and automatically engages with the printbar without requiring external actuation. The system uses its own internal forces (spring pressure) to maintain the locked position, eliminating the need for motors, sensors, or complex control systems while ensuring the printbar remains secured during transportation.
3Strength
If the cap is made of rigid material, then it provides structural support, but it can transmit impact forces to the print heads causing damage
Solution Approach 1:
The cap material properties are changed from rigid to compliant, allowing the cap to deform under impact forces. This parameter change enables the cap to absorb energy through elastic deformation rather than transmitting forces to the print heads, while still maintaining sufficient structural integrity to protect against contaminants and minor handling stresses.
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 locking mechanism effectively prevents unintended movement of the printbar, reducing the risk of damage to print heads and caps, ensuring the printing device remains operational and requires less maintenance, even during transportation or impacts.
Implementation Method 1
a cap made of compliant material to protect the print heads from contaminants and damage
Data Source
AI summary
An example printing device include a frame, a printbar, a lift mechanism, and a lock. The lift mechanism is operably coupled to move the printbar from a printing position to a capping position along a printbar path of travel with respect to the frame. The lock is operably coupled to the frame to releasably engage the printbar in the capping position and disengage the printbar and permit movement to the printing position.