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In the delivery of the card a pair of disc rollers scan the cross-section of the carded sliver as it emerges. These readings are compared electronically with the . Need of Autoleveller in. carding machine •Careful control of sliver uniformity is necessary in the spinning process. •So, continuous checking of sliver weight. Keywords: Autoleveller, Cotton yarn, Count variation, Draw frame. 1 Introduction able yarn count CV has been assessed for carded counts. The effect of single.

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There are two possible applications for assemblies of this type, namely in processing comber noil and where card sliver is fed directly to the rotor spinning machine. Cwrding out put shaft of the same drive the front draft controlling roller, calender roller, and coiler roller at variable speed so as to adjust the draft in accordance with the sliver thickness measurement. The distance between centre of two rollers varies with the fluctuating sliver thickness.

Auto Leveling in Carding | Part 04 | Textile Study Center

In former Zellweger autoleceller a medium-term auto leveler was provided as an addition to the long-term auto leveler. Coiler hood stop motion: A photo cell monitors the sliver between the calender rollers and the coiler.

The irregularity of card feed material is the important reason for sliver count variation ranging from very short upto 25 cm to very long term more than m variations.

  ASTM D3612 PDF

Optical feeler in the coiler unit: The sliver delivered from the calender roller passes beneath a guide located at the end of a lever. Study of different parts of carding machine and th Grinding Roller For Carding machine How it works Peed Roller Stop Motion. For various reasons, the card cannot always operate absolutely evenly, for example, owing to uneven material feed. Auyoleveller the modern carding machines have sensing at the feed rollers as well as ih the delivery calender rollers.

Auto Leveling in Carding | Part 04

ERM- Cleaner -Universal opening and cleaning machi The amount of this lift is measured and converted into a voltage proportional to the sliver thickness. Careful control of sliver uniformity is necessary in the spinning process, to minimise the production of streaky fabrics.

During the entry of abonormal thickness of lap or metal pieces under the feed roll, the knob raises.

The optical feeler is so arranged that the running sliver interrupts the beam of light and if the sliver breaks. Newer Post Older Post Home. When the knob raises by 1 mm the limit switch will act in such a way that the machine stop, and the white lamp burns, giving a signal to the aktoleveller.

Stop motions in the carding Stop motions are used in the following places of HP cards.

Defects in Blow room and causes. The speed of the feed roller of the card is changed electronically so that these fluctuations in the cross-section are leveled out.

Autoleveller in Carding | Autoleveller in Drawframe

Production and waste control in Carding Machine Carding Maintenance program Fibre hooks in carding and their inn on yarn q In the feed of the card the feed measuring device records the fluctuations in the cross-section of the batt feed.


However, the filling level is not used for regulating the feed rollers in the chute but is considered as an additional control parameter. Aero Mixer im Blowroom How it works?

However, in closed loop system, delivered sliver is of required linear density.

Fibre properties to be considered for blending: Proper selection and positioning of machines in bl Degumming of Silk March 14, Md. Frictional Properties March 14, Md. Carcing extraction systems in Carding Developments in licker-in section of Carding Machi Powered by Facebook Comments.

In the spinning mill, the card is the effective start of the process, since the first intermediate product, the sliver, is produced here. The pulses autoleveller in this way are processed electronically so that the speed of the in feed roller can be adapted to the delivered sliver weight via mechanical or electronic regulating devices.

Sliver break stop motion: These readings are compared electronically with the preselected set value. Doffing System in carding machine How it works? According to the basic principle of operation, autoleveller can be classified into two main groups: