西门子SIPLACE HS 50-设备参数_EN.pdf - 第27页

25 Description Slight distortions of the gantry axes cannot always be avoided de- spite the highly stable machine frame. With the aid of the mapping approach, the high placement pre- cision of the machine is maintained t…

➀ 12-Nozzle Collect & Place Head

➁ X-/Y-Gantry System

➂ Fixed Component Supply

➃ Fixed PCB

Description

In addition to correct positioning,

placement reliability is important.

On the SIPLACE HS-50 this is en-

sured through a number of control

functions, such as vacuum checks

and component vision testing dur-

ing the placement sequence.

Out of tolerance components are

rejected, placed on the repair list

and automatically processed during

a repair cycle. An offset in the po-

sition of the PCB relative to the

conveyor system (PCB vision) and

an offset of the X-axis, Y-axis or ro-

tation of the component relative to

the midpoint of the nozzle (com-

ponent vision) trigger an immedi-

ate correction to ensure placement

accuracy.

Since the PCB is fixed, the com-

ponents remain in the exact posi-

tion they are placed. The stationary

component table ensures a precise

pick up. Options, such as the

component bar code scanner,

can be added to further enhance

reliability.

Placement errors

Placement errorsPlacement errors

Placement errors

Errors that occur after the compo-

nent has been placed on the PCB.

They include:

§ Component is missed on PCB

§ Too many components on PCB

§ Components not placed prop-

erly on PCB

§ Components placed while

standing on edge

Machine Criteria:

Placement Reliability

Placement Principle SIPLACE HS-50

Description

Slight distortions of the gantry

axes cannot always be avoided de-

spite the highly stable machine

frame. With the aid of the mapping

approach, the high placement pre-

cision of the machine is maintained

throughout its service life.

With this calibrating procedure,

which can be conducted quickly

and easily, the PCB camera recog-

nizes the fiducials on a mapping

calibration plate placed in its oper-

ating area. This board has highly

accurate marks on it. Any distor-

tions are located by comparing the

nominal grid on the mapping board

with the actual grid ”drawn” by

the placement head. These distor-

tions are then considered when

calculating all further positioning of

the X-/Y-axis and are thus compen-

sated for.

Machine Criteria:

Mapping (Option)

Nominal Grid of Mapping Plate and Actual Grid with

Deviations Due to Gantry

Corrected

Position

Technical Data

Dimensions of the mapping

test plate

520 x 460 mm

(for single conveyor)

520 x 215 mm

(for dual conveyor)

Number of measurement

points

13 x 11 (standard resolution)

26 x 21 (high resolution)

Ambient temperature during

calibration + 20° ± 3°C

Components of the option Test plate (special glass)

Calculation data (disk)

Case for secure storage

Description

The UNIX line computer is as-

signed the following interstation

tasks: creation, revision and man-

agement of placement programs,

job data and component and GF li-

braries; automatic, optimized gen-

eration and administration of ma-

chine set-ups (set-up optimization,

set-up editors, optional set-up se-

quence optimization); determina-

tion of optimized travel for gantry

and nozzle assignments of the

Collect & Place Heads; control and

supply of data to SIPLACE ma-

chines in a line; calculation, storage

and display of machine and oper-

ating data; data backup on built-in

magnetic tape drive.

The Windows station computer in

conjunction with the machine con-

troller with its realtime capability

performs the following jobs: digital

control of the machine gantry sys-

tems; control of PCB input and

output and of PCB transport; moni-

toring functions, handling of mal-

functions and output of error mes-

sages (including Help system);

ensuring the optimal quality of the

placement process; optional load-

ing control by means of compo-

nent bar code and optional place-

ment program change by means of

PCB bar code.

For more detailed information

please see “SIPLACE Software

Specification”.

SIPLACE Software Architecture:

Line Computer / Station Computer

Functions

Line computer Programming

Optimization

Line control

Line monitoring

Data management

Station computer Machine control

Machine monitoring

Machine operation

Softwareversion From 501.xx

Line Computer

Station Computer