Staggered Mounting Head Motors for Precision Shaft Control
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Solution Overview
Problem
Conventional component mounting apparatuses face challenges in delicate rotation control of shaft members due to a single rotation driving motor, leading to potential mounting errors and hindered downsizing of the mounting head.
Innovation Solution
The mounting head features shaft members arranged in a staggered two-row configuration with corresponding rotation driving motors and vertical movement driving units in opposite staggered arrangements, allowing direct drive and precise control of shaft members without bulky end-mounted motors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single rotation driving motor is used to rotate multiple shaft members, then the mounting head structure is simplified, but delicate rotation control of individual shaft members becomes difficult and mounting errors occur
Solution Approach 1:
The patent divides the rotation driving function into multiple independent rotation driving motors, with each motor assigned to a specific shaft member. This segmentation allows each shaft member to be controlled independently, achieving delicate rotation control and preventing mounting errors, while resolving the contradiction between structural simplicity and control precision.
2Manufacturing precision
If rotation driving motors are disposed at the end part of the mounting head for each shaft member, then delicate rotation control is achieved, but the mounting head becomes bulky and downsizing is hindered
Solution Approach 1:
The patent changes the spatial arrangement dimension by configuring rotation driving motors and shaft members in a staggered arrangement where motors are positioned at different heights and depths rather than all at the end part. This dimensional reorganization allows compact integration of multiple motors while maintaining individual shaft control, achieving both precision and downsizing.
Solution Approach 2:
The patent nests the rotation driving motors within the mounting head structure by arranging them in a staggered configuration that utilizes internal space efficiently. The motors are integrated into the head body rather than being externally mounted, allowing the mounting head to maintain a compact form factor while housing multiple independent driving units.
3Volume of moving object
If multiple rotation driving motors are arranged in a compact staggered configuration, then downsizing is achieved, but space for vertical movement driving units becomes limited
Solution Approach 1:
The patent employs asymmetric staggered arrangements for both rotation driving motors and vertical movement driving units, where the two groups are positioned in opposite staggered patterns. This asymmetric configuration optimizes space utilization by distributing components in complementary patterns, allowing compact integration of all driving units while maintaining accessibility and functional independence.
Data Source
AI summary
A mounting head 16 includes shaft members 23 respectively provided with suction nozzles 22, rotation driving motors 24 for individually conducting rotary movements of the shaft members 23, and vertical movement driving motors 25 which are arranged in a staggered arrangement in an opposite direction to a staggered arrangement of the shaft members 23, and adapted to individually conduct vertical movements of the shaft members 23. The rotation driving motors 24 directly drive the shaft members 23, and the vertical movement driving motors 25 move the shaft members 23 up and down, together with the rotation driving motors 24.