西门子SIPLACE S25 HM-设备性能参数_EN - 第30页

28 Description Despite the highl y stable mach ine frame, slight distortions of the gan- try axes cannot alw ays be avoided. With the aid of the m apping proc- ess the high placem ent accur acy of the machine is preserve…

Description

In addition to correct positioning,

placement reliability is important.

On the SIPLACE S-25 HM this is

ensured through a number of con-

trol functions, such as vacuum

checks and component vision

testing during the placement se-

quence.

Out of tolerance components are

rejected, placed on the repair list

and automatically processed dur-

ing a repair cycle. An offset in the

position 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 pre-

cise pick up. Options, such as the

component bar code scanner, can

be added to further enhance reli-

ability.

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 of SIPLACE S-25

➀ 6-Nozzle or 12-Nozzle

Collect & Place Head

➁ X-/Y-Gantry System

➂ Fixed Component Supply

➃ Fixed PCB

Description

Despite the highly stable machine

frame, slight distortions of the gan-

try axes cannot always be avoided.

With the aid of the mapping proc-

ess the high placement accuracy

of the machine is preserved

throughout its entire 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. Any distortions are re-

vealed by comparing the nominal

grid on the glass plate with the ac-

tual grid “drawn” by placement

head. These distortions are taken

into account during all further posi-

tioning of X-/Y-axes and thus com-

pensated for.

Machine Criteria:

Mapping (Option)

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

Nominal Grid of Mapping Plate and Actual Grid with

Deviations Due to Gantry

Corrected

Position

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, stor-

age and display of machine and

operating 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 502.xx

Line Computer

Station Computer