Component Mounting Machine Height Correction Control
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Solution Overview
Problem
Existing component mounting machines face challenges in accurately controlling the height of component supply positions due to individual differences in component supply devices and units, leading to errors in component pickup, especially with the miniaturization of components and the need for frequent height measurements during device replacements.
Innovation Solution
A component mounting machine with a frame equipped with exchangeable feeder-type component supply units, a height memory section to store unique height values for each unit, and a height correction control section that adjusts the nozzle's lowering operation based on these values to absorb individual differences and errors, ensuring stable component pickup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple feeder-type component supply units are used to supply components, then the component supply capacity is improved, but the height variation of component supply positions increases due to individual differences between units
Solution Approach 1:
The patent applies preliminary action by measuring and storing the height of each feeder unit's component supply position in advance in a height memory section. This pre-measured height information is then used by the control section to automatically adjust the nozzle's lowering stroke amount for each feeder, eliminating the need for real-time measurement and setup when feeders are replaced or rearranged.
Solution Approach 2:
The patent changes the parameter of the nozzle's lowering stroke amount based on the stored height information of each feeder unit. By adjusting this stroke parameter individually for each feeder according to its specific height characteristics, the system compensates for height variations between different feeders and ensures accurate component pickup from all supply positions.
2Manufacturing precision
If the height position of the push-up pot is measured every time the wafer component supply device is replaced, then the component pickup accuracy is improved, but the setup changing time increases
Solution Approach 1:
The patent applies preliminary action by measuring and storing the height of each feeder unit's component supply position in advance in a height memory section. This pre-measured height information is then used by the control section to automatically adjust the nozzle's lowering stroke amount for each feeder, eliminating the need for real-time measurement and setup when feeders are replaced or rearranged.
Solution Approach 2:
The system performs self-service by automatically retrieving the stored height information for each feeder unit from the height memory section and adjusting the nozzle stroke amount without requiring manual measurement or intervention. The control section autonomously configures the component pickup operation based on the pre-stored height data, significantly reducing setup time.
3Device complexity
If the component supply device does not include a vertical movement mechanism, then the device complexity is reduced, but the ability to adjust component supply height is lost
Solution Approach 1:
The patent introduces an intermediary approach by using a height memory section to store feeder-specific height information and a control section to calculate and adjust the nozzle's lowering stroke amount. This software-based intermediary system compensates for height variations without requiring physical height adjustment mechanisms on the feeders themselves, maintaining simplicity while achieving adaptability.
Solution Approach 2:
The patent changes the parameter of the nozzle's lowering stroke amount based on the stored height information of each feeder unit. By adjusting this stroke parameter individually for each feeder according to its specific height characteristics, the system compensates for height variations between different feeders and ensures accurate component pickup from all supply positions.
Data Source
Figure 1~2
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Figure 5~6
AI summary
A component mounting machine (1) of the invention includes a frame (9); multiple component supply devices (3) which respectively include multiple component supply units (feeder units 8) and are exchangeably equipped; a component transfer device (4) in which a reference height (H0) as a reference of a lifting and lowering operation of a mounting nozzle (suction nozzle 46) is set; a height memory section (device control section 38) which memorizes a height unique value that is unique for each component supply device and that is a height unique value (Heg) based on unit heights (HL, HC, and HR) of each component supply unit when the component supply device is equipped; and a height correction control section (control device 6) which corrects a lowering operation stroke amount of the mounting nozzle based on the height unique value of the equipped component supply device. According to this, an error in a height direction can be comprehensively absorbed and the component can be stably picked up by controlling a component pick-up operation of the mounting nozzle based on the height unique value.