Nozzle Replacement Table Handling in Component-Mounting Devices
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Solution Overview
Problem
In component-mounting devices, replacing the nozzle replacement table typically requires opening the base cover, which interrupts component mounting operations and reduces productivity, as other mounting heads must be stopped to ensure worker safety.
Innovation Solution
A system that allows for the delivery and holding of the nozzle replacement table within the movable range of the mounting head without opening the base cover, using a replacement table holder and placing table on the feeder carriage, enabling the nozzle replacement table to be moved and held in a predetermined position, allowing for replacement without interrupting the component mounting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the nozzle replacement table is replaced by opening the base cover, then the nozzle replacement table can be accessed and replaced, but the component mounting operation must be stopped and productivity decreases
Solution Approach 1:
The system is divided into two independent replacement locations: the base cover side (first location) and the feeder carriage side (second location). The nozzle replacement table can be replaced at either location independently, allowing maintenance without stopping the entire mounting operation. The feeder carriage with its own placing table can be replaced separately from the base cover assembly.
Solution Approach 2:
The feeder carriage acts as an intermediary carrier that holds the nozzle replacement table on its placing table. This intermediary structure allows the nozzle replacement table to be transferred and replaced at the feeder carriage side without opening the base cover, enabling replacement while the mounting operation continues.
2Ease of operation
If the base cover is opened to replace the nozzle replacement table, then direct access to the replacement table is obtained, but worker safety is compromised and other mounting heads must be stopped
Solution Approach 1:
The replacement operation is segmented into two independent locations: base cover side and feeder carriage side. This segmentation allows the nozzle replacement table to be replaced at the feeder carriage side without opening the base cover, maintaining safety while enabling replacement operations.
Solution Approach 2:
The nozzle replacement table is extracted from the base cover interior and placed on the feeder carriage's placing table. This extraction allows replacement to occur at the feeder carriage side without opening the base cover, eliminating safety risks associated with opening the cover during operation.
3Adaptability or versatility
If the nozzle replacement table is held at a predetermined position within the movable range of the mounting head, then the mounting head can access the replacement table, but the replacement table must be precisely positioned
Solution Approach 1:
The mounting head automatically performs the positioning and replacement of the nozzle replacement table itself. The mounting head moves to the predetermined position, detects the replacement table, and executes the replacement operation without requiring external positioning mechanisms, reducing precision requirements for manual positioning.
Data Source
AI summary
A component-mounting device includes a base, a board positioner which positions a board, a feeder carriage which is attachable to and detachable from the base, a part feeder which supplies a component, a mounting head which mounts the component on the board positioned by the board positioner, a nozzle replacement table which holds a replacement nozzle attached to or detached from the mounting head, a replacement table holder which holds the nozzle replacement table at a predetermined holding position within a movable range of the mounting head, and a placing table on which the nozzle replacement table is placed before the replacement table holder holds the nozzle replacement table. The component-mounting device delivers the nozzle replacement table between the replacement table holder and the placing table in a state where the feeder carriage is connected to the base.