Printing Machine Chuck Pin Transfer Carriage Dynamics
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Solution Overview
Problem
Current printing machines for cylindrical objects are limited by slow unloading rates due to the need for two complete runs of the transfer organ to remove and reposition printed objects, leading to lengthy rests for the carousel and pins, which significantly restricts hourly production.
Innovation Solution
A device where the chuck and pin move on independent paths with a mobile carriage that grips and releases objects along a trajectory parallel to both, allowing simultaneous movement and transfer, reducing the need for multiple runs by aligning the trajectory of the gripping elements with the pin path, enabling faster and more efficient unloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transfer organ completes two complete runs (backward and forward) to remove and reposition printed objects, then the unloading operation is completed, but the hourly production rate is significantly limited due to the slowness of the unloading stage
Solution Approach 1:
The patent makes the pin movable along a predetermined path instead of stationary, allowing it to meet the carriage during its forward run. This dynamic positioning eliminates the need for the pin to remain stationary while the carriage returns, reducing the total cycle time and increasing unloading rate.
Solution Approach 2:
The pin moves along its predetermined path to position itself at the appropriate location before the carriage arrives during its forward run. This preliminary positioning allows the transfer operation to occur during the forward run without requiring the carriage to return, effectively performing the transfer action in advance of what would traditionally be a separate return stroke.
2Ease of operation
If the carousel and pin are stationary in the extractor station during unloading, then the transfer organ can grip and transfer objects, but the carousel must take lengthy rests between unloading operations
Solution Approach 1:
The patent makes both the carousel and pin movable during the transfer operation. The carousel rotates to position chucks while the pin moves along its path to meet the carriage. This simultaneous movement eliminates the need for the carousel to be stationary during transfer, allowing continuous operation without lengthy rests.
Solution Approach 2:
By making the carousel and pin movable during the transfer operation, the system maintains continuous useful action. The carousel continues to rotate and position objects while the transfer occurs, eliminating idle rest periods and maximizing productivity through uninterrupted operation.
3Ease of operation
If the transfer organ moves alternatingly straight to complete backward and forward runs, then objects can be extracted and repositioned, but the device complexity increases due to the need for multiple runs
Solution Approach 1:
The patent introduces dynamic movement of the pin along a predetermined path, allowing it to meet the carriage during the forward run. This eliminates the need for the carriage to perform a separate backward run to reposition, simplifying the movement sequence from two complete runs to a single forward run with dynamic pin positioning.
Solution Approach 2:
The pin moves along its predetermined path to position itself in advance during the forward run, allowing the transfer to occur without requiring the carriage to return. This preliminary action of the pin eliminates the need for the alternating backward and forward runs, reducing the complexity of the transfer organ's movement sequence.
Data Source
AI summary
A device for transferring objects from a printing machine chuck to a support and distancing pin, the chuck and the pin being moved on two independent paths, at a point of which paths they are parallel to one another and at a predetermined reciprocal distance, the device comprising a carriage which is mobile in a parallel direction to the chuck and to the pin, between a distant position from the chuck and the pin to a close position to the chuck and the pin, means for gripping and releasing the objects being provided on the carriage, which means for gripping and releasing are mobile along a trajectory in a perpendicular plane to the carriage in order to be placed alternatively in front of the chuck and the pin, the trajectory including at least a tract in which it is parallel to the path of the pins.