Component Mounting Device with Cam Follower Height Stabilization

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Solution Overview

Problem

Conventional mounting devices face challenges in stabilizing the height position of tall components, leading to potential damage or deformation during positioning, and inaccuracies in judging the pickup state due to height variance, necessitating a more stable gripping position in the height direction.

Innovation Solution

A mounting device with a head unit featuring a contacting section that contacts a housing section at a predetermined height, allowing the component to be gripped stably by the contacting section and housing section, which includes a cam follower for smooth movement and a height adjusting mechanism to accommodate various component sizes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a mechanical chuck with gripping claws is used to pick up tall components, then the component can be gripped, but the height position of the component becomes unstable and positioning at mounting position becomes difficult

Engineering Contradiction:
Improvegripping stabilityVSAvoidheight position stability
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The patent introduces a contacting section as an intermediary element between the gripping section and the component housing. This contacting section contacts the housing section at a predetermined height position to establish a stable reference, while the gripping section grips the component through the housing section. This intermediary structure decouples the gripping function from the positioning function, allowing stable height positioning without direct contact with the component itself.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The head unit is segmented into functionally independent sections: a contacting section for establishing height reference by contacting the housing section, and a gripping section for gripping the component. This segmentation allows each section to perform its specific function optimally - the contacting section ensures stable height positioning while the gripping section handles the component gripping, resolving the contradiction between gripping capability and height stability.

Inventive Principle:
Principle #1Segmentation

2Manufacturing precision

If the component is positioned by directly contacting the component with a member, then height positioning can be achieved, but damage or deformation of the component occurs

Engineering Contradiction:
Improveheight positioning accuracyVSAvoidcomponent damage or deformation
Core Design Contradiction:
Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The contacting section serves as a mediator that contacts the housing section rather than the component itself to establish height reference. This indirect contact method allows precise height positioning to be achieved without applying force to or deforming the component, as the housing section acts as a stable reference structure that does not suffer damage from the positioning operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

Instead of positioning the component directly in the height direction by contacting it with a member, the patent establishes height reference by contacting the housing section at a predetermined height position. This shifts the positioning reference from the component dimension to the housing section dimension, allowing height positioning to be achieved indirectly without compromising the component.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Ease of operation

If suction nozzle is used to pick up component, then component can be picked up, but position deviation in height direction occurs

Engineering Contradiction:
Improvepickup operationVSAvoidheight position accuracy
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The patent replaces the suction-based pickup method with a mechanical gripping system that incorporates a contacting section for height reference. Instead of relying on suction forces that can cause height position deviation, the mechanical system uses direct contact between the contacting section and housing section to establish a stable height reference, providing both ease of operation and height position accuracy.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

The device ensures stable gripping of components in the height direction, reducing the risk of damage and deformation, and provides accurate positioning with reduced position deviation compared to traditional methods.

Implementation Method 1

the contacting section may include a cam follower that rotates according to the movement of the gripping section when the gripping section moves when picking up the component

Methodology Applied
Scientific EffectCam follower mechanism: Cam

Data Source

PatentUS10617049B2Component mounting device and gripping members
Publication Date: 2020.04.07 FUJI CORP
  • US10617049B2 patent drawing
  • US10617049B2 patent drawing
  • US10617049B2 patent drawing

AI summary

A mounting device is provided with a mechanical chuck that picks up a component housed in a tray by gripping the component in a state with a cam follower contacting tray housing the component at a predetermined height. The mechanical chuck is provided with a first holding member including a first gripping member, and a second holding member including a second gripping member. The cam follower is a rotatable roller, and when the first holding member moves when picking up the component from tray, the cam follower rotates according to this movement in a state contacting tray.