Cách nhận biết linh kiện của máy mounter (NPM)

Component TOP VIEW Creation example 1 Standard Creation example 2 Creation example 3 1 1-way lead connector Transmission Ball group Corner Mold section Lead section Added shape data red

NPM Recognition Know

Contents

• Recognition System Configuration

• Recognition Data Creation Example

• Troubleshooting

• Image Save Function

Recognition System Configuration

CM Series

NPM

Component data: Basics (reference etc.)

Optical system configuration:

Line sensor (transmission, reflection, side)

3D sensor

Algorithm selection: Customer

Component data: Basics (reference)

+ Option

Automatic teaching: QFP, BGA,

Optical system configuration:

Line sensor (transmission, reflection, side) 3D sensor

BM Series

• Although having inherited the component data of BM series,

it has inherited the data input form of the editor of PANAPRO

• It has incorporated the optical system of CM series

• It has incorporated all the algorithms of CM series and BM series

It automatically selects the optimal algorithm from the recognition library

Component data: Basics (type) + Option

Optical system configuration:

Head camera (reflection triple)

Fixed camera (reflection triple)

2D (reflection triple, transmission)

3D sensor

Algorithm selection: Customer

Algorithm selection: Automatic

selection Compound

Automatic teaching: All components Type 101 to 106

Automatic teaching: QFP, BGA,

Irregular shape

3D sensor

Type 101 to 106Ref1 to 255

Component Creation Example

u

u The following introduce the component creation example when irregularThe following introduce the component creation example when irregular shaped components are selected with DGS/LWS.shaped components are selected with DGS/LWS

The introduction concentrates on the frequently used shapes, such as lead group, ball group, and corner

Component

(TOP VIEW) Creation example 1 (Standard) Creation example 2 Creation example 3

1 1-way lead connector

Transmission

Ball group Corner

Mold section

Lead section

Added shape data (red lines) If the angle

accuracy is bad, add corners or electrode shapes across the lead line.

2 1-way lead connector

Transmission Lead group

Ball group

If the lead size is unstable, specify the electrode positions using corner shapes.

If the lead size or the position is unstable, change to the transmitted lighting, and register the mold corner positions.

Add a (single) lead so that it may enclose the electrode line collectively.

If the electrode size is not stable, add corner shapes to the outermost electrode positions.

Transmission Lead group

Ball group

Lead group Ball group

Without-angle-detection option added

Without-angle-detection option added

Specify

“round” for the mold shape.

Specify

“round” for the mold shape.

If the lead position/shape is unstable, register only the mold information, and do not use the shape data (Use the transmitted lighting.)

If there are two or more leads, register them collectively as a lead group.

If the right and left electrodes differ in width, input each one correctly.

If the mold color is whitish, register corners not leads.

If the lead position/shape is unstable, register only the mold information, and do not use the shape data (Use the transmitted lighting.)

Two or more leads are

If electrodes are not U-shaped, input the average width of the electrodes.

If the lead position/shape is unstable, register only the mold information, and do not use the shape data (Use the transmitted lighting.)

Insertion lead group 

For insertion pin components, register other shapes than insertion pins to assist detection.

If there are any

electrodes etc

besides insertion pins

Register the component-mold- section corner positions using the transmitted lighting together.

11 Insertion pin

component #3

Transmission Insertion lead group 

Insertion lead group  ( In the above example,

besides insertion pins

If an insertion pin line

has two or less pins

If a pin line has two

or less pins, register every pin individually.

If the angle accuracy

is bad, add corners

or electrode shapes across the lead line.

If leads are not aligned evenly or are

of the different types, register the leads individually.

Add a (single) lead Mold section: White

If there is a sufficient amount of protrusion

of leads from the mold, register the lead group.

(Protrusion guideline = 0.20 [mm])

Specify white for the mold color. Specify white for the mold color.

If there is a small amount

of protrusion of leads from the mold, register other shapes, such as corners, than the lead group.

(Protrusion guideline = 0.20 [mm])

14 Pin jack component

If there are a few (2 or less) external electrodes, add a corner with transmission.

Register the Leads individually.

If there is any mold protrusion whose shape

is similar to a lead

For earth spring components, register corners all around the component outline If the image of the R-shape section is unstable, add also the side lighting (in the case of reflection).

Lamp

Brief Description of Detection Specifications by Shape



 This page provides the brief description and precautions on the detection of each shape used on the previous pages.This page provides the brief description and precautions on the detection of each shape used on the previous pages

(1) Lead group

• For each lead, the tip and side edges are detected and positioned

• When the number of registered leads is two or more, the distance

(pitch) among lead center positions is checked

* If there is an unnecessary mold projection etc among leads,

split and register the lead group

Refer to the component data creation example, No.14 pin jack,

creation example 3

(2) Ball group

• For each ball, the edges in outer regions are detected and positioned

(4) Rectangle

• Each of the top, bottom, right, and left edges is detected and positioned

* If a specific edge image is unclear at the lead base etc., detecting this edge becomes unstable; in this case, therefore, register that as

a (single) lead group

The edge at the electrode bottom

is unclear.

For rectangular shape, detecting the bottom edge is unstable.

The unstable bottom edge will not

be detected by regarding the shape

as a lead (facing up).

(5) Line

• For each ball, the edges in outer regions are detected and positioned

• When the number of registered ball matrices is two or more, the

distance (pitch) among ball center positions is checked

(3) Corner

• Each edge on two lines is detected and positioned

• Positioning is applied only in the two directions; therefore, registering

another shape at the opposing side/corner on the component

stabilizes the detection position

Only one side registered side registeredAlso opposing

• The edge on a specified line is detected and positioned

* Because of directional detection, always register another shapealso in opposing/orthogonal direction

Only top and bottom registered

=> Cannot be positioned in horizontal direction Registered in all directions

(6) Round

• The edges in outer regions are detected and positioned

* If the outer regions are partially unclear, specify the start and end angles

• The component center position to be finally detected is determined by the vector error average of the detection position to the center position (Cx, Cy) of each registered shape

Configuration and Function of Lighting for Component Recognition



 The following pages describe the configuration and roles of the lighting for component recognition.The following pages describe the configuration and roles of the lighting for component recognition

Configuration of lighting for component recognition

For NPM, there are three lighting configurations for acquiring

Side lightingLighting unit

Sensor optical system

Transfer head/nozzle

<Lighting configuration diagram>

The role of each lighting configuration is as follows:

Transmissive lighting:

Irradiates a component background with light to generate the

component silhouette image

[Transmissive lighting image example] • The component will be acquired

as a silhouette image

• The background becomes a white level

component silhouette image

Used when component electrodes do not shine (because of mirror

electrodes) or for positioning a component by its outline

Reflective lighting:

Irradiates a component underside with light to generate the

component electrode image

Used for positioning the one by electrodes on the component

underside or when the nozzle outer size is larger than the

component size

Side lighting:

Irradiates a component side with light to generate a component

side image

Used for clarifying an electrode outline when the electrodes have a

curved shape (BGA components, J-lead components)

[Reflective lighting image example]

[Side lighting image example]

(The left figure shows the case

Configuration and Function of Lighting for Component Recognition

Precautions in changing the lighting lamp value

The NPM has a function to allow the lamp value of each lighting to be

changed separately on equipment in order to make a component image

condition good

This page shows the image condition precautions for each lighting

configuration

[Transmissive lighting image precautions]

Light amount: Low Light amount: Moderate Light amount: High

The transmissive lighting irradiates a component background reflector with light to shine the background

• If the set light amount is low, the background does not fully shine, and a black streaky shadow appears on the reflector

• If the set light amount is high, also the component is irradiated with light, and the componentsilhouette image becomes unstable

For the transmissive lighting, use the machine-default value basically

(16/12/8-nozzle head: Lamp value = 40, 2/3-nozzle head: Lamp value = 80)[Reflective lighting image precautions]

Positioning by electrodes Light amount: Moderate The reflective lighting irradiates an entire component underside with light to shine the

Choose [Lighting] on the component recognition teaching setting screen. Set each individual lighting value on the teaching screen.

Positioning by electrodes Light amount: Moderate

Positioning by outline Light amount: Moderate

The reflective lighting irradiates an entire component underside with light to shine the component electrodes (or the whole)

In the example on the left figures:

• When using the component electrodes for positioning (shape registration), adjust thelight amount so that the mold may not shine like a high light amount state

• However, when using the component outline for positioning (shape registration), set

a higher light amount so that the mold outline may be acquired clearly

For the reflective lighting, adjust it so that the registered shape may be clear on the image.[Side lighting image precautions]

Only side lighting ON Side + Reflective lighting ON

When making BGA components recognized, do not use the reflective lighting basically

Turning on the reflective lighting has the following harmful effects:

• The component land pattern shines, and the boundary information on a ball outline becomes unclear

• Also the missing balls shine similarly to the normal balls, causing such balls not to be judged defective any more.When turning on the reflective lighting for the polarity mark inspection or because of a brightness error due to an uneven ball surface, make sure that its light amount is about a maximum of 50

* Any lighting corrects the relationship between lamp value and light amount by the brightness calibration function Therefore, depending on equipment (unit), anextreme low light amount (lamp value: under about 10) may make the lighting control value for lamp value negative, thereby disabling the lighting

Make sure that the light amount is 10 or more

Make sure that the light amount is 10 or more

Configuration and Function of Lighting for Component Recognition

Image guidelines in changing the lighting lamp value

This page introduces the image guidelines in changing the lighting lamp value using the example of representative components

Example 1 Internal electrode component 1 Tantalum, ECSP, Filter, LCC

For a component with electrodes on its underside (placement-side electrodes), when

using the electrodes for positioning, set the light amount so that the brightness

difference between electrodes and mold may be fully acquired

Standard light amount Light amount = High

Shape registration of electrodes

Brightness distribution with light amount high

(2) (1)

(1) Brightness difference between electrodes and mold: 100 or more(2) Brightness difference between mold and background

Guidelines for light amount setting:

Example 2 Internal electrode component 2 Aluminum electrolytic capacitor

For a component such as an aluminum electrolytic capacitor,

when you want to use the mold outline for positioning because the

electrodes vary greatly to the mold outline:

(In order to avoid the adjacent component interference on a

populated PCB)

Turn off the reflective lighting and turn on the transmissive lighting

to carry out the transmitting recognition

(In this case, the reflective and the transmissive lighting should not

be on concurrently.)

Example 3 Differences in substitute components

For a substitute component, when there is a difference in the component mold color or in the shape other than electrodes:

• Register only the same shape (shape of the portion to be mounted on

a PCB land pattern), not changing the lighting setting

• If you have changed the recognition conditions by changing the lighting only,the recognition becomes unstable when a substitute component is used

Mold color: Different

 Do not register the mold shape

Register only the lead group of common shape

Configuration and Function of Lighting for Component Recognition

Image guidelines in changing the lighting lamp value

Turning on the reflective lighting has the following harmful effects:

• The component land pattern shines, and the boundary information on a ball outline becomes unclear

• Also the missing balls shine similarly to the normal balls, causing such balls not to bejudged defective any more

For BGA components in the standard lamp setting, the transmissive lighting is also turned on When the transmissive lighting turns on:

• Processing time will have an advantage because the mold information is used for therough positioning for ball array detection

• A wrong component detection by component outline will be carried out because thecomponent outline information is checked

Example 4 Ball-type component BGA, CSP

For ball-type components such as BGA/CSP, you can acquire the ball-only image by using

the side lighting

For this type of component, do not turn on the reflective lighting basically

Standard light amount Plus reflective lighting on

Mold pattern shining

[Remarks]

The ball detection processing detects the outer regions of ball Therefore, even if the ball's peak (center) is black, the detection will not be affected

Black missing

component outline information is checked

(* When the nozzle outline size is larger than the component mold size, turn offthe transmissive lighting.)

Example 5 Curved electrode component PLCC/SOJ, Cylindrical resistor

When making J-lead components (PLCC, SOJ) and cylindrical resistors recognized with the reflective lighting, turn on also

the side lighting to clarify the component (electrode) outline image and stabilize the detection position

Only reflective lighting ON Reflective + Side lighting ON

Lead tip clarified With the reflective lighting, the horizontal plane of component underside is acquired as

an image

For a curved plane, its side is hard to be acquired as an image

In such a case, turn on also the side lighting to acquire the clearer image including the side and stabilize the detection

Reflective lighting Reflective lighting

Side lighting

Only underside shining Entire curve shining