00198481-01_Technical_Training_E_by_DEK_EN.pdf - 第25页
4 Conveyor System 4.5 Rising Table Technical Training E by DEK 12/2017 25 Sensor and Motors View from rear of rising table motor assembly 1. Spring balance attachment point 2. Leadscrew 3. Rising table motor securing scr…
4 Conveyor System
4.5 Rising Table
24 Technical Training E by DEK 12/2017
4.5 Rising Table
4.5.1 Main Overview
Rising Table Style 2
View on Rear Left of Rising Table Style 2
1. Manual Tooling Plate
2. Rising Table Motor with Integral
Electromagnetic Brake
3. Rising Table drive belt
4. Home Sensor
5. Linear Bearing Guide (in 2 positions)
6. Rising Table Leadscrew
7. Remote Board Stop (Optional)
8. Rail to Table Height Adjuster (in 4
positions)
4.5.2 Rising Table Functionality
The rising table moves up and down within the machine supporting the product board, via the
tooling, and accurately positions the height of the rails at several different pre-determined heights
during the print cycle. The rising table contains the attachment points for the transport rails and the
drive for the moving rear rail, for more information refer to the Transport Rails chapter.
The rising table heights, determined by the software and referenced from the home position, are as
follows:
●
Home position
●
Transport height
●
Vision height
●
Print height
The rising table initializes only once, when the diagnosis is exited or when the machine is switched
on. The transport height is a product-specific setting, which determines the board clearance for
tooling during transport and removal. The vision height puts the substrate in the fixed focus of the
camera. During the alignment sequence, the board remains at the vision height. The rising table
moves in pressure to bring the substrate into contact with the stencil.
The rising table also carries the optional remote on-board stop, which enables heavy substrates to
be transported.
4 Conveyor System
4.5 Rising Table
Technical Training E by DEK 12/2017 25
Sensor and Motors
View from rear of rising table motor assembly
1. Spring balance attachment point
2. Leadscrew
3. Rising table motor securing screws
Module contains servomotor, driver electronics, encoder, processor, CAN open interface and
transmission. Control via CAN bus.
Views on rear right of rising table:
A - View on RS
1. Home vane securing screws
2. Home vane
3. Rising table home sensor
●
During the zero point travel, the table is driven down until the flag moves slowly into the
home sensor until the sensor switches. At this point the table is driven up until the flag leaves
the sensor. The table is then driven back down until the flag is back within the sensor. The
motor then stops, and home position is reached.
●
At the zero point, the motor reverses direction until the flag just leaves the sensor. The motor
drives again until the flag sits inside the sensor.
●
The motor stops. The home position is reached.
Rising Table Home Position
View on left hand side of machine
1. Steel rule
2. Screen
3. Manual tooling plate
●
All the heights of the machine (transport height, vision height, pressure level) depend on this
position.
●
The Table homing position measurement is 209 - 212mm but is not adjustable as the vane
and the sensor are both fixed.
4 Conveyor System
4.5 Rising Table
26 Technical Training E by DEK 12/2017
4.5.3 Electrical Overview
4.5.4 Parts Exchange / Settings / Calibrations
Conveyor Parts Exchange Tools / Setting Calibration
Rising Table Motor Belt Tension 6kg
●
Table reference vision height and table
reference print height
●
Check only as it is unlikely they would
have changed as the sensor/vane have
not been touched.
Belt Belt Tension 6kg
●
Table reference vision height and table
reference print height
●
Check only as it is unlikely they would
have changed as the sensor/vane have
not been touched.
Home Sensor
●
Check / adjust home setting
●
Check / adjust vision height
●
Check / adjust print height
For detailed instructions refer to the technical reference manual.