This document provides instructions for operating the unwind component of a Janus MK2 machine. It describes the various positions and functions of the unwind, including primary and secondary positions, storage stations, and the lift off lever. It also provides a detailed explanation of the flying splice function, which allows for automatic changing of full reel spools by joining a new spool to the existing web.

1. Training
Janus MK2
Offliner
4.0 Components
4.1 Unwind
Bhigwan PM 2
210 00 400 Janus MK2

2. 2
Unwind
Machnine floor

3. 3
Unwind
roll in rail

4. 4
Unwind
primary position
unwind with primary bearing,
locking and coupling

5. 5
Unwind lift off lever
with locking
device
secondary position
with secondary bearing
hook and brake

6. 6
Unwind
storage station 1

7. 7
Unwind
Machnine floor roll in rail
lift off lever
with locking
device
storage station 1
unwind - primary position
with brake generator, primary
bearing, locking, reel spool
clutch and shifting function
secondary position
with secondary bearing,
locking, hook and brake

8. 8
Unwind
lift off lever
with locking
device
roll in rail
unwind - primary position
with brake generator, primary
bearing, locking, reel spool
clutch and shifting function
storage station 1
with bearing, locking
secondary position
with secondary bearing,
locking, hook and brake
splice roll
with cut-off
device and
blow off pipes
safety
photocell
safety
photocell
optical splice detector

9. 9
Function of Unwind with flying splice
Following functions occur after the releasing
for the reel spool change:
1. The speed is reduced to flying splice speed.
2. The shifting function of the unwind (if activated) is switched off.
3. The calender nips are opened.
4. The unwinder is centered (shifting function).
5. The lift off lever are lowered and the secondary bearings
with hook are positioned against the reel spool.
6. The secondary bearings are closed.
7. The brake generator is uncoupled.
8. The secondary brake performs the function of the brake generator.
9. The primary bearing lockings are switched to float position.
10. The reel spool with lift off lever is lifted from the primary bearings
and, at the same time, the splice roll is swiveled next to the reel for
guiding the paper web.
crane
emptying
position crane
inserting
position
Full reel spools with a diameter of max. 2800 mm to
min. 1600 mm can be changed automatically by
the Flying Splice. The change operation requires the
reel spool to be unwound down to a remaining slab
of approx. less then 100 mm.

10. 10
Function of Unwind with flying splice
11. A full reel spool is rolled into the primary bearings and halted.
12. The secondary bearing locking are closed.
13. The brake generator is coupled.
14. The full reel spool is accelerated to flying splice speed.
15. “Start Flying Splice” by the operator or automatically.
16. Activated by the optical splice detector, the paper web with
splice roll is briefly pressed against the full reel spool in the
area of the splice tape where it sticks to the adhesive tape,
splits it and in doing so joins the start of the paper web of
the full reel spool to the paper web of the empty reel spool.
17. The cut off device separates the paper web of the empty reel
spool behind the splice.
18. The empty reel spool of the remaining slab is halted.
19. The secondary bearings brakes are opened.
20. The empty reel spool can be removed from the lift off lever
by the crane.
21. The nips remain open while the splice passes through the
calender.
22. The nips can be closed, loaded and the calender can be run
at production speed.
23. An empty full reel spool can be placed into the crane
inserting position.
crane
emptying
position crane
inserting
position