This document summarizes recent developments in combers, which prepare cotton fibers for spinning. It describes modern combers that have improvements such as higher production rates up to 520kg/hr, better fiber orientation and batt structure, even tension lapping systems, and fully automated servo trolleys. Key components like nippers, combs, and detaching rollers have also been updated with advances like reduced vibrations, self-cleaning techniques, and finer tooth configurations for improved combing quality and fiber waste reduction.

1. By
Himanshu Gupta
M.Tech-1

2. In this challenging world “improvement and
innovation” is the only formula to survive in
ever growing market.
So the main focus of this presentation is to
acquaint you all with the modern
developments in comber.

3.  SB D 22 + E 35 Omega lap (Latest)
 Homogeneous lap build-up.
 Good fibre orientation and batt structure.
 Even tension through belt lapping system.
 Fully automated Servo trolleys.
 Prodn 520Kg/hr
 Higher batt Weight till 80g/m

4.  Latest development in Lap changing system

5.  Prodn increased by 2% under same Quality.
 Piecing quality measurably improved.
 Fiber wastage reduced.

6.  In modern combers nipper have to open more
than 8 times/sec.
 General construction of nipper assembly
1. Guide plate
2. Top nipper
3. Bottom nipper
4. Pivot point(a)
5. Spring

7.  Metal used – Aluminum magnesium alloy for side body & jaws are
made of fine steel.
 Introduction of web guide plate near feed roll.
 Distance b/w feed roll & nipper mouth has been reduced.
 Reduced vibrations.
 Clamping line distance reduced
 Concentric synchronize movement of the nippers

8.  Circular combs mainly the core element.
 They remove short fibers, trash neps & seed trash.
Fibers are parallelized at the same time.
Advancement
o Ri-Q-Comb from graf.
o Large combing area - 130°.
o Different combs acc. To staple length.

9.  With separately exchangeable segments.
 No. of point increases from 160 up to approx.
900 points/inch.
 Ensured distance of the lower nipper to the
clothing points of the comb remains exactly
the same over the total angle.

10.  Ri-Q-Top top combs.
 Top combs equipped with self cleaning technique.
 Top comb holders are equipped with air flow which blows even air for
self cleaning.
 Sequence can be varied from 2 nips to once in 64 nips.
(2,4,16,32,64).
 Better combing Quality due to 100% cleaned top comb.
 New geometry that matches the curve of detaching roller.

11.  Helical fluting with larger distance and fine
diagonal.
 Convexly ground, i.e. their centre diameter is
slightly increased.
 Proximity sensor which monitors the sliver in
condensation process.

12.  Clamping line distance reduced.

13. By Reiter
• Top roll diameter
increased(Ø 45MM)
• Steel stripper
• Steel plunger
• Extraction from abv.

14.  By Trutzschler
• Individually controllable pneumatic loading.
• Toothed belt drives ensure
low-maintenance operation
and quiet running.
• Feed top roll remains on the slivers
and thus prevents the slivers from
slipping back
• Pneumatic web threading.

15.  New gear with
compensating elements
for high nip values and
low energy consumption
and use of timing belts.
 For higher precision the detaching rollers are driven by
double cams. An oscillator with differential gear allows
longer overlapping during
piecing

16.  Tco1 by truetzschler  E 80 by Rieter