Waste Tape Conveyance Device Control Logic
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Solution Overview
Problem
In component mounting systems with multiple conveyor devices, waste tape can overflow from collection boxes or conveyor devices due to full storage or equipment breakdowns, as existing systems lack effective control mechanisms to manage conveyor operations.
Innovation Solution
The system implements a control network between conveyor devices and a waste tape collection unit, using signal requests and vacuum signals to manage waste tape conveyance and prevent overflow by synchronizing operations and responding to conveyor device status, ensuring waste tape is only conveyed when collection is possible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple conveyor devices operate independently for each component mounter, then waste tape can be conveyed continuously, but waste tape may overflow from collection box or conveyor device when collection box is full or conveyor stops due to breakdown
Solution Approach 1:
The control device receives information about collection box status and conveyor operation status, then automatically adjusts conveyor operation accordingly. When collection box is full or conveyor is stopped, the control device stops upstream conveyors to prevent overflow. This feedback mechanism ensures continuous productivity while preventing overflow incidents.
Solution Approach 2:
The control device proactively stops conveyor devices before overflow can occur by monitoring collection box status and conveyor operation status in advance. When the collection box approaches full capacity or a downstream conveyor stops, the system preemptively halts upstream conveyors, preventing the harmful overflow condition rather than reacting after it occurs.
2Productivity
If conveyor devices operate continuously, then waste tape is conveyed efficiently, but energy is wasted when collection box is full or conveyor is stopped
Solution Approach 1:
Instead of continuous operation, conveyor devices operate periodically based on actual waste tape generation needs and collection box status. The control device activates conveyors only when waste tape needs to be moved and the collection box can receive it, then stops them when collection box is full or downstream conveyors are stopped, eliminating energy waste during idle periods.
Solution Approach 2:
The conveyor system automatically adjusts its own operation based on feedback from the control device about collection box status and downstream conveyor status. The system self-regulates to operate only when necessary, stopping automatically to prevent overflow and waste energy, without requiring manual intervention.
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 effectively prevents waste tape overflow and energy wastage by ensuring waste tape is only conveyed when collection is available, enhancing operational reliability and efficiency in component mounting systems.
Implementation Method 1
a waste tape conveyance device (40) having conveyor devices (41) provided independently for each component mounter (20), and configured to convey the waste tape in the board conveyance direction
Implementation Method 2
a waste tape collection unit (50) provided at an end of the waste tape conveyance device (40) in the board conveyance direction, and configured to collect the waste tape conveyed by the waste tape conveyance device (40)
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
When a waste tape generation condition is established or when an operation request is input from another conveyor device on an upstream side in a waste tape conveyance direction (upstream conveyor), a conveyor device to which another conveyor device is adjacent on a downstream side in the waste tape conveyance direction(downstream conveyor) outputs an operation request to the downstream conveyor, when the operation of the downstream conveyor is confirmed, the conveyor device starts to operate, and when the waste tape generation condition is not established during the operation and the operation request is not input from the upstream conveyor, the conveyor device stops operating and releases the operation request to the downstream conveyor. On the other hand, when the waste tape generation condition is established or when the operation request is input from the upstream conveyor and a waste tape collection section is in a collectable state, the conveyor device to which the waste tape collection section is adjacent starts to operate and when the waste tape generation condition is not established during the operation and the operation request is not input from the upstream conveyor, the conveyor device stops the operation.