Component Mounting Device Positioning Protruding Parts
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Solution Overview
Problem
Existing component mounting devices struggle to accurately position substrates at a working location when components protrude outside the substrate, as the detection of the substrate's end and the component's projection can overlap, leading to incorrect placement.
Innovation Solution
A component mounting device with a substrate conveyance path, inspection light projector and receiver, end detection unit, and positioning control unit that halts the conveyance when the substrate's end is detected and adjusts for projecting components by moving the substrate the length of the projection, ensuring accurate positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the substrate conveyance path halts conveyance when the substrate end reaches the inspection light, then the substrate positioning is simple and quick, but the positioning becomes incorrect when components protrude from the substrate end
Solution Approach 1:
The system performs preliminary detection of component projection lengths before substrate positioning. The projection length detection unit measures how far components protrude from the substrate end, and this information is stored in advance. During positioning, the system retrieves this pre-detected projection length data and uses it to calculate the correct halt position, rather than simply stopping at the substrate end detection point.
Solution Approach 2:
The patent replaces the simple mechanical end-detection positioning method with an optical measurement system. The projection length detection unit uses optical means to detect component projections, and the positioning control unit uses computational logic to determine the correct substrate position based on detected projection lengths, substituting mechanical simplicity with optical-electronic precision.
2Manufacturing precision
If the substrate conveyance path detects component projection ends before substrate ends, then protruding components can be positioned, but the positioning becomes delayed and less efficient
Solution Approach 1:
The system performs preliminary detection of component projection lengths before substrate positioning. The projection length detection unit measures how far components protrude from the substrate end, and this information is stored in advance. During positioning, the system retrieves this pre-detected projection length data and uses it to calculate the correct halt position, rather than simply stopping at the substrate end detection point.
Solution Approach 2:
The system implements a feedback mechanism where the detected projection length information is fed back to the positioning control unit. The positioning control unit uses this feedback to adjust the substrate conveyance halt position, ensuring that the substrate is positioned correctly relative to the protruding components while minimizing positioning time through efficient feedback-based control.
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
Enables precise positioning of substrates at the working location even when components protrude, ensuring correct alignment and mounting, enhancing the accuracy and efficiency of the component mounting process.
Implementation Method 1
a light projector that projects inspection light in a direction orthogonal to a direction of conveyance of the substrate by the substrate conveyance path and a light receiver that receives the inspection light projected by the light projector
Data Source
AI summary
A challenge to be met by the present invention is to provide a component mounting device, a component mounting system, and a component mounting method that make it possible to correctly position a substrate at a working location and mount components on the substrate even when components mounted on the substrate project outside from an end of the substrate in a direction parallel to a substrate conveyance path. When a front end portion (PbT) of a substrate (Pb) conveyed by a substrate conveyance path (13) is detected to have reached inspection light (L), operation of the substrate conveyance path (13) is immediately halted. When a front end portion (PtT) of a projecting portion H of a component (Pt) mounted on the substrate Pb is detected to have reached the inspection light (L), the substrate conveyance path (13) is activated in such a way that the substrate (Pb) moves in the direction of projection of the projecting portion (H) over a distance equivalent to a projection length (α) of the projecting portion (H) reached the inspection light (L) and is subsequently stopped, thereby positioning the substrate (Pb).