2OM-1075-002.pdf - 第55页

1.2.3 Preparation for Component Placement Movable and Fixed Cameras: Image Capture for Component Recognition and Component Recognition • The movable or the fixed camera captures an image of the compo- nent for recognitio…

1.2.2 Component Supply and Pick-Up

Each Feeder: Component Supply

• Each feeder (the tape, the vibratory stick, or the multi-layer tray

feeder) specified in the pattern program sends out the components

to the supply position, using the tape feed mechanism.

Fig. 2B7 Component Supply

Feeder Base: Component Pick-Up

• The heads move to the supply position of each feeder and the

vacuum nozzles pick up the components.

Fig. 2B8 Component Pick-Up

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1.2 Component Placement (starting with preparation for component picks)

Supply Position

Vacuum Nozzle

Tape Feeder

1.2.3 Preparation for Component Placement

Movable and Fixed Cameras:

Image Capture for Component Recognition and Component

Recognition

• The movable or the fixed camera captures an image of the compo-

nent for recognition.

The component recognition camera is automatically selected ac-

cording to the component library data.

• The machine is provided with two component recognition systems

- "Back Lighting Recognition System" and "Front Lighting Recogni-

tion System". The lighting method specified in the component li-

brary is automatically selected.

The following component recognition takes place.

(1) Component Detection

All components can be detected.

(2) Component Inspection

Each inspection is made according to the component library.

(3) Measurement of Positional Deviation (X, Y) and Angular

Deviation (θ) between Component Recognition Camera

Center and Component Center

Fig. 2B9 State of Component Picked Up by Vacuum Nozzle

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1.2 Component Placement (starting with preparation for component picks)

Component

Vacuum Nozzle

Component Center

Positional Deviation X and Y

Angular Deviation θ

(deviation from correct direction)

• Principle of Recognition

(1) Back Lighting Recognition System

The figure shows the sectional view of the recognition unit and

the flow of recognition light in the back lighting recognition sys-

tem.

• As for the component shown by the diagonal lines, the outline

is recognized through fixed back lighting.

Fig. 2B10

The light emitted from the back lighting lamp meets the diffusion plate

(assembled together with the nozzle) and reflects to the component. At

this time, the light which does not meet the component enters into the

CCD camera through the monocular. That is, the CCD camera cap-

tures the image of the outline of the component.

Fig. 2B11 Image on Recognition Monitor (Example)

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1.2 Component Placement (starting with preparation for component picks)