Component Mounting Device Lane Safety Control
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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, leading to inefficiencies and safety risks during frequent type changes.
Innovation Solution
A component mounting device with independent board conveying and component supplying mechanisms, along with a mounting control system that moves and secures the mounting head to a withdraw position using a brake mechanism, allowing device type changes on one lane without stopping the other, thereby preventing operator safety hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If device type changing operation is performed in one mounting lane while the other lane continues working, then productivity is improved, but operator safety is compromised due to potential entry of body parts or foreign objects into the movable area
Solution Approach 1:
The protective cover is divided into a movable portion and a fixed portion, allowing independent control of safety coverage. The movable portion can be positioned to cover the opening when needed, while the fixed portion maintains structural integrity. This segmentation enables selective safety coverage without stopping the entire system.
Solution Approach 2:
The control unit automatically positions the movable protective cover portion to cover the opening before the device type changing operation begins, and maintains this protective position during the operation. This preliminary safety action prevents operator injury without requiring manual intervention or system shutdown.
2Object-affected harmful factors
If both mounting lanes are stopped for device type changing operation, then operator safety is ensured, but productivity decreases due to forced downtime
Solution Approach 1:
The system allows one mounting lane to continue its component mounting operations while the other lane undergoes device type changing. The movable protective cover enables this continuous operation by providing automated safety coverage, eliminating the need to stop both lanes simultaneously and maintaining overall system productivity.
3Loss of time
If the mounting head is left in the movable area during device type changing, then quick resumption is possible, but operator injury risk increases from sudden head movement
Solution Approach 1:
The control unit automatically positions the movable protective cover portion to cover the opening before the device type changing operation begins, creating a safe working environment without requiring manual head repositioning. This preliminary safety action eliminates the need for operators to manually move the mounting head, preventing injury while enabling quick resumption.
Solution Approach 2:
The movable protective cover acts as an intermediary barrier between the operator and the mounting head. It provides automatic safety coverage without requiring the operator to interact with the moving mounting head, thus preventing injury while allowing the head to remain in its operational position for quick resumption.
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
Enables device type changes without stopping the operation of other mounting lanes, ensuring operator safety and maintaining productivity by preventing the entry of body parts or foreign objects into the component mounting mechanism's movable area.
Implementation Method 1
a brake mechanism provided in the component mounting mechanism, the mounting controlling part fixes a position of the mounting head to the withdraw position by the brake mechanism
Data Source
AI summary
When performing the device type changing operation with the change of the board type to undergo mounting, the component mounting device, which has a first mounting lane and a second mounting lane and which is structured so as to be able to select either an independent mounting mode or an alternate mounting mode, moves a mounting head of the mounting lane to and thereafter positions and fixes to a previously-set predetermined withdraw position [P] where entry of a portion of a body of an operator by way of an opening (19) formed in a protective cover (18a) can be prevented and where safety of the operator is not impaired even if a mounting head of a mounting lane on the other side has undergone collision.