Spindle Orientation Control for Precision Component Mounting
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Solution Overview
Problem
Existing electronic component mounting apparatuses face precision issues due to mechanistic errors in spindle operations, leading to inaccuracies in component positioning during the mounting process.
Innovation Solution
A component mounting apparatus with multiple spindles and a head body that rotate about distinct pivots, controlled by a synchronized system to maintain precise orientation and positioning, allowing components to be picked up and mounted without subsequent spindle rotation, thereby minimizing positional changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rotary head is intermittently operated after performing the photographing, then the mounting operation can be performed, but the position of the electronic component may be changed due to mechanistic error in spindles, resulting in reduction in precision of mounting position
Solution Approach 1:
The patent applies preliminary action by performing the photographing operation before the mounting operation, and by pre-positioning the spindle at the pickup orientation before component transfer. This ensures that the component position is determined and locked in advance, preventing any positional changes during subsequent mounting operations.
Solution Approach 2:
The patent extracts the spindle rotation function from the mounting operation by separating the pickup operation (where spindle rotates to pickup orientation) from the mounting operation (where spindle is retained at initial orientation). This extraction eliminates the mechanistic errors that occur during spindle rotation during mounting.
2Ease of operation
If the spindle rotates about the first pivot from initial orientation to pickup orientation and then returns to initial orientation, then the component can be oriented to mounting orientation, but additional rotation operations increase the risk of mechanistic errors
Solution Approach 1:
The patent segments the orientation operation into two distinct phases: (1) pickup operation where the spindle rotates from initial orientation to pickup orientation to grasp the component, and (2) mounting operation where the spindle is retained at the initial orientation. This segmentation eliminates the need for additional rotation during mounting, reducing mechanistic errors while maintaining orientation capability.
Data Source
AI summary
A component mounting apparatus including: plural spindles respectively including nozzles, each spindle rotating about a first pivot and each nozzle picking up a component; a head body rotating about a second pivot substantially parallel to a first pivot and rotatably supporting the spindles; and a controller controlling the spindles and the head body to perform: a pickup operation in which the spindle rotates about the first pivot from an initial orientation to a pickup orientation, the nozzle picks up the component, and the spindle rotates from the pickup orientation to the initial orientation so that the component is oriented to a mounting orientation at which the component is to be mounted on a substrate; and a mounting operation in which the picked-up component is transferred to a mounting position of the substrate during which each spindle is retained at the initial orientation.