00195440-05-SG_D-Series_FSE-EN - 第214页

12 Modular Conveyor 12.1 Functions 12.1.4 Stopping the PCB 214 Student Guide SIPLACE D-Series (FSE) A PCB moving control check the start- and arriv al time at the c onveyors. This is necessary because of the PCB-informat…

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12 Modular Conveyor
12.1.1 Clamping 12.1 Functions
Student Guide SIPLACE D-Series (FSE) 213
12
12 Modular Conveyor
Modular Conveyor
12.1
12.1 Functions
Functions
12.1.1
12.1.1 Clamping
Clamping
The PCB is lifted for placement of components and pressed up against the PCB clamping rail. When the
lifting table rises the PCB and the complete conveyor drive unit is lifted up to the clamping position.
Therefore the placement level is constant and independent of the thickness of the PCB.
PCBs up to 368 mm long are clamped in the appropriate placement areas. Clamping does not take place
on the input and output conveyor. Boards with a length over 368 mm (option "long board": to 610 mm)
are kept in a clamped position on the conveyor belt up to a length of 360 mm (D1/D1i/D2/D2i: 440 mm)
and are then supported in the placement area only by the lifting table.
12.1.2
12.1.2 Width adjustment
Width adjustment
The width is adjusted by means of a motor as programmed. With the dual conveyor, different widths are
possible for the two conveyor tracks. The width adjustment uses a stepping motor, meaning that the new
PCB width can be set independently of other machine components.
The conveyor sides are fixed by means of a clamping unit on a steel strip.
The PCB width is adjusted via two adjustment units, installed under the input or output conveyors.
▪ The stepping motor moves the two adjustment units synchronously through the use of ball screws
and a toothed belt.
▪ To adjust the board width, the two adjustment units are positioned under the relevant conveyor side.
The precise position is detected by a BERO on the adjustment unit.
▪ The conveyor side is mechanically connected to the adjustment unit by extending the pneumatically-
actuated fixing pins. This disables the clamping of the conveyor side (at the steel strip).
▪ Once the new PCB width is reached the fixing pins of the adjustment unit are retracted once more.
The conveyor side is clamped again.
On the dual conveyor, the widths of the conveyor tracks have to be set one after the other (just one drive
for both conveyor tracks). The maximum and minimum PCB widths are protected by limit switches. If the
two conveyor sides of a conveyor lane are not parallel, this is automatically corrected during the width
adjustment. The two adjustment units are moved under the fixed conveyor side and the other conveyor
side is adjusted. Adjustment relates to the center point between the positions of the two adjustment units.
The adjustment unit which reaches its position under the flexible side first, locks the side. The process
continues until the second adjustment unit has reached its position and has also locked the flexible con-
veyor side. The position of the conveyor side has now been recorded, fixed with the adjustment unit and
is ready to set the correct board width.
The flexible dual conveyor can also be used as a single conveyor by closing up track 2 (max. PCB format
368 x 380 mm).
12.1.3
12.1.3 Checking the PCB position on the conveyor sections
Checking the PCB position on the conveyor sections
The positions of the PCBs is identified using light barriers (transmitter modules and receiver modules).
The transmitter light barriers are positioned below the transport belts. They are directed past the trans-
port belt to the opposite conveyor side to the receiver above the belt.
The signal from the light barriers stops PCBs in the input conveyors, intermediate conveyors and output
conveyors. These three light barriers can be assembled into four different positions to recognize also
"irregular" circuit boards (PCB with cutouts).
In the placement area, the light barrier triggers the deceleration or braking procedure via the DC motors.
A time period has already been set in the software for slow board approach towards the laser light bar-
rier.
12 Modular Conveyor
12.1 Functions 12.1.4 Stopping the PCB
214 Student Guide SIPLACE D-Series (FSE)
A PCB moving control check the start- and arrival time at the conveyors. This is necessary because of
the PCB-information (bad mark -, PCB recognition) we transfer from PA1 to PA2. The operator is not
allowed to remove PCB’s from the intermediate conveyor.
12.1.4
12.1.4 Stopping the PCB
Stopping the PCB
The PCB in the placement area is recognized by a laser light barrier. The laser beam looks for the front
edge of the board and stops it, as a result there is no shock against the stopper. The positioning accuracy
of the clamped PCB is +/-0.5 mm -precise enough for PCB recognition.
12.1.5
12.1.5 "Long Board" Option HF
"Long Board" Option HF
In this option, the "long board" is clamped down twice, so that the placement head can reach the whole
board. In D4/D4i machines, this two-fold clamping is performed in placement area 2.
The following hardware for this option is fitted in the output conveyor of each lane:
▪ 1 mechanical stopper
▪ 1 ultrasound sensor
With this option the standard conveyor light barriers and lasers remain active!
12.1.6
12.1.6 "Alignment Pin" Option
"Alignment Pin" Option
This option is for unfavorable length/width relationships and/or for cut outs at the leading edge at a PCB
board Mechanical stopper pins are mounted on a flexible conveyor side at the lifting table. This option
can be enabled or disabled with a switch. The lifting table move up, so that the top of the pin is at the
same height as the board. The laser recognize the PCB board and the conveyor stops after a defined
time and the clamping is completed. The clearance under the PCB board is reduced to 25mm.
12.1.7
12.1.7 Lifting table
Lifting table
Depending on the version (single/dual conveyor), one or two independent lifting tables are used in each
placement area. The lifting table drive works indirectly via a pneumatic cylinder controlled by a 5/3-way
valve. PCB‘s of different thickness will automatically be compensated for. The PCB is guided in the Z
direction at four points on the lifting table plate. The lifting path is determined via a distance measuring
system.
The top position of the lifting table is identified by the position measuring system and a fork light barrier
for lane A and B. The top position of the lifting table and the correct clamping of the board are checked
in current mode via the conveyor motors. The lowest lifting table position is detected by the incremental
measuring system and an end position BERO on the pneumatic cylinder. The default clearance under
the PCB is 40 mm.
If you use a dual conveyor as a single conveyor you must couple both lifting tables.
12.1.8
12.1.8 Firmware Functions
Firmware Functions
▪ Transporting, clamping, temporarily storing the PCBs, positioning the PCB using a laser light barrier,
mechanical stopper for long PCBs as an option
▪ Single functions for controlling the conveyor
▪ Adjusting the conveyor width
▪ Controlling the inputs/outputs (using the SITEST program)
▪ Downloading the firmware via SITEST
NOTICE
Cause of Hazard
The red, 74 mm board supports, previously used for S20, F4, S25HM, S27HM, F5HM, HS50,
HS50+, are not suitable for use in HS60, HF, X or D/Di machines.
Use the black 94 mm board supports for HS60, HF, X and D/Di machines.
12 Modular Conveyor
12.1.9 Conveyor Control TSP 201 12.1 Functions
Student Guide SIPLACE D-Series (FSE) 215
▪ Setting the conveyor parameters (conveyor speed) in SITEST
▪ Synchronous transport mode
▪ Calibrating the conveyor sides (SITEST function)
▪ Saving the machine conveyor data
12.1.9
12.1.9 Conveyor Control TSP 201
Conveyor Control TSP 201
The conveyor control TSP 201 is used for the 3-part conveyor paths of the D1/D1i and D2/D2i machines.
It supports the following options:
▪ Left conveyor side fixed (default: right conveyor side fixed)
▪ "Long PCB" option
▪ PCB Alignment pin
▪ Vacuum tooling
▪ PCB barcode
▪ Interface for PCB handling signals with SCHEMA standard/ optional PCB handling signals for SIE-
MENS standard
12.1.10
12.1.10 Conveyor Control TSP 301
Conveyor Control TSP 301
The conveyor control TSP 301 is used for the 5-part conveyor paths of the D3 and D4/D4i machines. It
supports the following options:
▪ Left conveyor side fixed (default: right conveyor side fixed)
▪ "Long PCB" option
▪ PCB Alignment pin
▪ Vacuum tooling
▪ PCB barcode
▪ Interface for PCB handling signals with SCHEMA standard/ optional PCB handling signals for SIE-
MENS standard
12.1.11
12.1.11 Overview – Conveyor Systems in D/Di-Series
Overview – Conveyor Systems in D/Di-Series
Assembly D4/D4i D3 5-part conveyor system
Conveyor control
TSP301 YES
Extension assembly for DT YES
SMEMA Option This may be the standard in the USA, mean-
ing that you would need other cables be-
tween the machines!
Siemens PCB handling in-
terface
Standard Switchable via jumpers but can NOT be ed-
ited in SITEST configuration window.
Conveyor (TSP) conversion
board
YES
Conveyor (TSP) side con-
version board
2 or 4 3 or 4
DIP switch 1, 2 ON
3-8 OFF
1 ON
2-8 OFF
Download eSW (firmware) 05 06
PCB recognition
Light barrier Transmitter red, left
PCB stop in PA Optical, LASER