Independent Arm Marking Machine Asynchronous Drive
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Solution Overview
Problem
Existing marking and labeling machines, including those with turntables and screen-printing machines, face limitations in productivity due to synchronized movements of components, which restrict processing speed and increase operational costs and inertia, leading to inefficiencies in handling workpieces between stations.
Innovation Solution
A marking or labeling machine with two independently rotating arms, each driven by dedicated motors, allowing for asynchronous movement between stations, enabling one arm to process workpieces while the other is at a loading, marking, inspection, or unloading station, thereby increasing processing speed and reducing stationary time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a turntable with multiple cores is used to mark workpieces, then productivity can be improved, but the machine inertia increases and operational costs increase
Solution Approach 1:
The turntable is divided into multiple independent arms (first arm, second arm, etc.), each capable of independent rotation about the common first axis. Each arm carries its own support member for workpieces and has independent drive means, allowing parallel processing of multiple workpieces without the inertia of a single large turntable.
Solution Approach 2:
The system transitions from a synchronized turntable rotation to dynamic independent control of each arm. The independent drive means allow each arm to rotate at different speeds and times, optimizing the processing cycle and reducing overall system inertia while maintaining high productivity.
2Productivity
If synchronized movement of arms is used, then device complexity is reduced, but productivity is limited by stationary time at each station
Solution Approach 1:
Each arm is equipped with independent drive means that allow dynamic control of rotation speed and timing. This enables arms to move asynchronously - while one arm is stationary at a marking station, another arm can be moving between stations or at a different station, eliminating idle time and maximizing productivity.
Solution Approach 2:
The independent drive means allow arms to be positioned and prepared in advance for their next operation. While one arm is being marked, another arm can be pre-positioned at the loading station or moving to the next station, reducing waiting time and improving overall processing speed.
3Productivity
If independent drive means for each arm are used, then productivity increases through asynchronous movement, but device complexity increases
Solution Approach 1:
The drive system is segmented into independent drive means for each arm, with each drive unit dedicated to rotating a specific arm about the common first axis. This modular approach, while increasing component count, allows for standardized, simpler individual drive units that can be controlled independently to achieve high productivity through asynchronous operation.
4Productivity
If a single cam is used to move intermediate members, then device complexity is reduced, but productivity is limited by sequential operation
Solution Approach 1:
The single cam mechanism is replaced with segmented independent drive means for each arm. Instead of one cam sequentially actuating intermediate members, each arm has its own drive system that can operate simultaneously and independently, eliminating the sequential bottleneck while managing complexity through modular design.
Data Source
AI summary
A marking or labeling machine which includes at least one marking or labeling member and a feed mechanism for bringing workpieces for marking or labeling into register with the at least one marking or labeling member. The feed mechanism includes at least two arms mounted to turn about a common first axis, with each arm carrying at least one support member for supporting a workpiece for marking or labeling, and also includes secondly independent drives for driving each of the arms in rotation about the common first axis independently of the other arm.