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4. Basic Operations of the Multifunctional Mounter TFGB-10101-0 1 SI-G200 (B Head) Overview SHEET 3/20 4. Basic Operations of the Multifunctional Mounter The multifunctional m ounter picks up, recognizes, a nd mounts par…

3. Sizes of Parts That Can Be Handled

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SI-G200 (B Head) Overview

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3. Sizes of Parts That Can Be Handled

There are restrictive conditions between camera types/lighting methods and parts. Select an appropriate camera

and a recognition method according to the size of parts or the shape and size of electrodes.

Parts may not be recognized correctly, depending on the shape of electrodes or the degree of reflection. In such a

case, take measures, such as switching a camera to use to another.

Camera Types, Recognition Methods, and Sizes of Parts to Be Handled

Cameras (Field of View) Recognition Methods Sizes of Parts to Be Handled

Fixed camera (Large view) Global recognition 1005 to □10mm

Fixed camera (Large view) Individual recognition

to □50mm

(split recognition: up to 100 x 50 mm)

Fixed camera (Small view) Individual recognition 1005 to □18mm

Difference in the Sizes of Target Electrodes According to Camera Types

Lead part BGA part

Camera

Recognition

Method

Lead

Width

(mm)

Space

between

Leads (mm)

Pitch

(mm)

Ground

Plane

(mm)

Ball

Diameter

(mm)

Space

between

Balls (mm)

Pitch

(mm)

Large view

Global

recognition

Individual

recognition

0.20 or

0.30 or more

0.50 or

0.24 or

0.40 or more

0.32 or

0.72 or

Small view

Individual

recognition.

0.10 or

0.15 or more

0.25 or

0.10 or

0.16 or more

0.12 or

0.28 or

4. Basic Operations of the Multifunctional Mounter

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SI-G200 (B Head) Overview

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4. Basic Operations of the Multifunctional Mounter

The multifunctional mounter picks up, recognizes, and mounts parts in the same way as SI-G Series mounters

(high-speed mounters). Described below are the operations, features, and points to note of the multifunctional

mounter.

4-1 Operations in Automatic Production

The flow of pickup, recognition, and mounting of parts in automatic production is shown below.

Unless there are no special restrictions, such as the number of parts to be picked up simultaneously or

coexistence of Accuracy levels, continuous pickup is conducted according to the order of numbers defined

in machine model data.

When nozzle replacement is necessary during production, the nozzle replacement operation is conducted

before parts pickup.

Recognition is conducted according to the recognition method specified by part data.

Multiple recognition operations may be conducted in the same path.

For each of parts set in the high-Accuracy mode, the operation from recognition to mounting is conducted.

Parts set in the high-Accuracy mode are recognized according to their mounting angles.

Parts are mounted onto the coordinate positions specified by machine model data.

For each of parts set in the high-Accuracy mode, the operation from recognition to mounting is conducted.

When a pickup error or recognition error has occurred, an operation of disposing of parts is conducted after

this.

4-2 Fixed Camera Recognition Mark

Inflation or contraction of each section of the mounter due to temperature change causes the position of the

head to change during the movement of X and Y axes. Therefore, the change in the XY position needs to

be removed when parts are recognized.

During part recognition, change in the XY position due to inflation or contraction when parts move to

above a fixed camera causes an error in the posture or the position of parts. This influences the parts

mounting Accuracy of the mounter.

In order to remove this influence, when time specified in machine data has lapsed, the position of the

reference mark on the fixed camera is checked before parts are recognized by the camera, and the XY axis

position error when parts move to above the camera is compensated for.

The XY position when parts are mounted is removed when compensation with alignment mark recognition

is performed. Therefore, no other compensation needs to be performed.

4. Basic Operations of the Multifunctional Mounter

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[Basic Operation]

At regular time intervals, the reference mark on the

fixed camera is recognized immediately before the

camera recognizes parts. After the position of a part

after its movement to above the fixed camera is

compensated for, based on the result of reference mark

recognition, the part is recognized.

[Operating Conditions]

1. When a specified time has lapsed during automatic production, the reference mark is recognized

immediately before parts are recognized.

2. When time has lapsed after motion stop, the reference mark is recognized immediately before part

recognition after automatic production restarts.

3. After power supply has restarted, the reference mark is recognized immediately before the first part

recognition.

4. The reference mark on the fixed camera is not recognized in the aging and simulation modes.

4-3 Pickup

[Basic Operation]

Unless there are any restrictions, parts move to the supply section according to the order defined in the

path of machine model data, and they are picked up continuously. When "Pickup Check" of part data has

been set to "ON," pickup check is carried out.

The operation of the pickup check differs, depending on part categories. For parts belonging to Category A,

pickup check is carried out with a pickup check camera used. For parts belonging to categories other than

A, pickup check is carried out with a pickup check sensor in the upper part of the fixed camera. The

number of parts that can be picked up simultaneously differs, depending on the part categories.

[Part Categories]

The multifunctional mounter can pick up larger-size parts that high-speed mounters cannot do by changing

its pickup check methods and recognition methods appropriately according to the sizes of parts.

As the result of that the scope of the sizes (width, length, and height) of parts to be handled has been

expanded, there are various operating conditions according to the sizes of parts to be handled, which are

determined by interference among parts when multiple parts are picked up simultaneously, interference

with a height recognition camera, conditions for nozzles to be used, etc.

In order to correspond with the characteristic of each part size, for the multifunctional mounter, "part

categories" defined by part sizes have been established. According to the part categories, the number of

parts that one head can pick up simultaneously, pickup check methods, RT and RN rotational restrictions,

recognition methods, and nozzle types change.