Component Placement Machine Board Height Measurement
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Solution Overview
Problem
The existing component placement machines require a significant increase in takt time due to the lengthy process of board height measurement using a single laser displacement meter, which negatively affects the initiation of board installation.
Innovation Solution
A component placement machine equipped with a board supporter featuring multiple height measuring instruments that simultaneously measure the heights of various board surface portions, allowing for concurrent board support and height correction, thereby reducing the time required for board height measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single laser displacement meter performs scanning measurement after board support, then measurement precision is maintained, but productivity deteriorates due to increased takt time
Solution Approach 1:
The patent divides the board height measurement task into multiple simultaneous measurements using multiple height measuring instruments positioned at different locations on the board supporter. Instead of one sequential scan, multiple points are measured concurrently, segmenting the measurement process spatially to reduce total measurement time while maintaining precision through multiple data points
Solution Approach 2:
The patent combines the board support function and height measurement function into a single integrated process. The height measuring instruments are attached to the board supporter itself, allowing support and measurement to occur simultaneously at the same location, eliminating the need for separate measurement steps and reducing takt time
2Measurement precision
If laser displacement meter scanning is performed after board support, then measurement accuracy is achieved, but loss of time increases
Solution Approach 1:
The height measuring instruments are pre-positioned on the board supporter before the board is placed. When the board is supported, measurement begins immediately without waiting for a separate scanning process to start. This preliminary positioning enables immediate measurement action as soon as the board is in place, reducing the time loss before installation can begin
Solution Approach 2:
The measurement process continues simultaneously with the board support process rather than occurring sequentially after. Multiple instruments measure different portions of the board at the same time the board is being supported, creating continuous useful action that eliminates idle time between support and measurement operations
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
This configuration significantly reduces the time needed for board height measurement, thereby improving takt time by enabling faster and more efficient component installation on the board.
Implementation Method 1
a plurality of height measuring instruments attached to the board supporter and measuring heights of a plurality of portions of the lower surface of the board
Data Source
AI summary
A lower surface of a board arranged at a working position is supported by a board supporter, and heights of a plurality of portions of the lower surface of the board are measured by a plurality of height measuring instruments attached to the board supporter. A component is installed on the board by control of a height of the installation of the component by an installation head and with respect to the board, which has the lower surface supported by the board supporter, being performed based on the height of the plurality of portions of the lower surface of the board measured by the plurality of height measuring instruments.