Component Mounting Device Movable Partition Wall Safety
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Solution Overview
Problem
In component mounting devices with multiple lanes, device type changing operations require stopping both lanes to ensure operator safety and maintain productivity, which is inefficient and can impair safety when performed frequently.
Innovation Solution
The device incorporates separate board conveying and component supplying mechanisms with controlled mounting heads and data-driven operation modes, allowing device type changing on one lane without stopping the other, by setting limited movable areas for each operation mode to prevent head interference and ensure safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If device type changing operation is performed on one mounting lane while the other lane continues operating, then productivity is improved by avoiding stoppage of the working lane, but operator safety is compromised due to lack of physical isolation between lanes
Solution Approach 1:
A movable partition wall is introduced as an intermediary physical barrier between the first and second mounting lanes. The partition wall can be moved to isolate the lane undergoing device type changing operation from the working lane, providing physical protection for the operator while allowing the other lane to continue operating. This mediator enables simultaneous operation and maintenance activities without compromising safety.
Solution Approach 2:
The partition wall is designed to be movable rather than fixed, allowing it to dynamically adjust its position based on operational requirements. When device type changing is needed in one lane, the partition wall moves to isolate that lane. When both lanes are operating normally, the partition wall can be positioned to allow maximum space utilization. This dynamic adjustment enables the system to adapt to different operational states while maintaining safety.
2Reliability
If both mounting lanes are stopped for device type changing operation, then operator safety is ensured through complete system halt, but productivity decreases due to forced stoppage of the working lane
Solution Approach 1:
The component mounting device is segmented into two independent mounting lanes with separate board conveying mechanisms and component mounting mechanisms. This segmentation allows each lane to operate independently, so that device type changing in one lane does not necessarily require stopping the other lane. The movable partition wall further segments the shared operational space, enabling isolated maintenance activities.
Solution Approach 2:
The movable partition wall serves as a physical intermediary that separates the two mounting lanes when needed. This mediator allows the system to maintain safety isolation without requiring complete system shutdown, as only the lane being serviced needs to be isolated from the working lane.
3Productivity
If manual operations are performed during device type changing while the other lane operates, then productivity is maintained, but the complexity of safety control increases due to coordinated operation management
Solution Approach 1:
The movable partition wall acts as a physical mediator that simplifies safety control by providing automatic spatial isolation. When the partition wall is in the isolated position, it physically prevents the operating mounting head from entering the lane undergoing device type changing, eliminating the need for complex interlocking control systems. The control system only needs to manage the partition wall position and basic lane coordination.
Solution Approach 2:
The patent replaces complex mechanical interlocking safety systems with a simpler control-based system that manages the movable partition wall. Instead of using multiple sensors, interlocks, and mechanical blocking mechanisms, the system uses a centralized control unit that coordinates the partition wall movement and lane operations, reducing overall system complexity while maintaining safety.
Data Source
AI summary
In a component mounting device (1) which includes a first mounting lane (L1) and a second mounting lane (L2) and for which an independence mounting mode and an alternation mounting mode are selectable, a first limited movable area (R1A) and a first limited movable area (R1B) in which the movements in the horizontal direction of a first mounting head (13A) and a second mounting head (13B) of the mounting lanes are permitted in the independence mounting mode, are set as areas different from second limited movable areas in the alternation mounting mode, to prevent the mounting head of the mounting lane which is continuously operating from entering into the area of the mounting lanes for which the device type changing operation is being performed.