Warp Ing Bdtextileinfo-Books Pdf

Warp ing BDTEXTILEINFO
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To produce weavers beam from small amount of warp yarn. To produce weavers beam from yarns which do not required any sizing mtl to be. applied before weaving,To produce weavers beam from twist yarn. Weavers beam can be formed immediately after sectional warp yarn. Production is less so it is costly process,A tapered beam or drum is used. Yarn tension can not be kept uniform,Creel capacity is 300 400. Features or utilities of High speed warp yarn,To produce common fabrics in large quantities. To produce weavers beam from single yarn,For high speed production.
The weavers beam is produced after sizing,A simple flanged bobbin is used as beam. To produce weavers ve3am from large amount of yarn. Creel capacity is greater than 12000,Cheap process. Q Discuss the mechanical thread stop motion in warping with sketch. Noakhali Textile 08 09, The mechanical device most extensively used for thread stop motion on a beam warper is. known as Singleton automatic thread stop motion The working of this device is based. on the falling of a bent wire between the nips of a pair of revolving rollers therby. effecting a forward movement of one of these rollers which throws the driving clutch out. of gear through a lever arrangement, In figure one of the rollers which is mounted on a fixed bearing receives its motion from. the winding drum through shafts levers This roller through a gear drive at the other. end drives another roller which is mounted on a movable bearing hence can make. lateral movements On one end of this movable roller is a lever fulcrummed at a point. above the roller The lower end of this lever is in loose contact with balance weight by. means of lever arrangement Normally the trigger is supported on a projection Now. when a yarn breaks the supported on it falls between the two moving rollers The. direction of the rotation of the rollers is such that the pin is dragged down betn the two. in the process the movable roller is pushed forward Along with this the lever also moves. Fabric Manufacturing I, forward its movement of the lever throws the trigger out from its support This causes.
the friction clutch on the driving shaft to be thrown out of gear simultaneously putting. the drum break into action so that the machine is stopped immediately The balance. weight which is attached to the lower part of the trigger assists in the performance of the. above operation, Q Describe the problems in warp yarn how can you solve these. problems Dhaka Textile 03 05 06 Noakhali Textile 08. 1 Warp off centre of the beam Due to not carefully placing of creel wraith flanged. Remedy Beam wraith placed properly,2 Ridgy or uneven warp beam This defect due to. a Winding of small no of ends on larger beam, b When the dents are bent or the spacing between dents are uneven. c Mixed count,Remedy Higher no of ends be used,3 Crossed ends Due to. a Faulty knotting after yarn breakage,b Tying of broken ends.
c Loose warp,Remedy Knotting tension controlled,4 Snarl formation in the warp Due to. PREPARED BY,Abdullah Nur Uddin Rony Khurshedul Alam. BTEC 2nd Batch,Get this by www bdtextileinfo blogspot com. a Over tension,b Improper twist,c Position of guide. Remedy By proper tension twist,5 Missing ends Due to.
a Faulty stop device,b Exhausted cone or bobbin,c Absence of cone or bobbin on creel. Remedy By correct stop device used,6 Hard beam Due to high tension. Remedy By correct stop device used, 7 Unequal length of warp Due to faulty measuring device. Remedy Tension pressure maintained,8 Broken ends,Remedy To be joined carefully the yarn. 9 Entanglement of warp,10 Large knot,11 Sandy warping.
12 Slack ends,13 Uneven tension of warp,14 Uneven shape of beam. 15 Wild yarn,16 Defective beam flange,17 Warp ends round the creel peg. 18 Unequal length of warp, 19 Unequal size or weight of cone or cheese in the creel. 20 Lapped ends,21 piecing,22 Soft end on the warping beam. 23 Warp ends round the creel peg spindle result broke. Q Compare between High speed warping Sectional warping. Dhaka Textile 05 Noakhali Textile 09,Sl High speed warping Sectional warping.
1 To produce common fabric colour To produce fancy fabric. grey fabric,2 High prodn Lower prodn, 3 Large amount of yarn reqd Small amount of yarn reqd. 4 Weavers beam is produced after Weavers beam is produced after warping. 5 Creel capacity is greater than 12000 Creel capacity is 300 400. 6 Flanged bobbin is used as beam Tapered beam or drum is used as beam. 7 Single yarn is used Twist yarn is used,8 Cheap process Costly process. Fabric Manufacturing I,9 Uniform tension Non uniform tension. 10 Used very much Not used,Q Define Creel capacity Dhaka Textile 03. The amount of package which is contained in creel is called creel capacity. In sectional warping creel capacity is 300 400 In high speed warping creel capacity is. Q Discuss the measuring self stop motion in warping with sketch. Noakhali Textile 08, This motion is provided essentially to get equal length of warp on all the warper beams of.
a set The measuring motions can be independent of self stopping motion are of. various types The length wound on to the beam can either be recorded through a. measuring roller which is driven by the running yarn or through the winding drum itself. One of the devices for self stopping is described below. The measuring roller 1 at one end has a worm 2 which drives worm wheel 3 On the. shaft of the worm wheel there is a worm 4 which transmits the motion to a warp wheel. 5 There is a stepped disc 6 on the shaft of the warp wheel Bent end of a fulcrummed. level 7 rests on this disc while the other end of this lever is attached to an upright. trigger 10 At the start the bent end of the lever rests on the depressed point of the. stepped disc When the warp wheel completes on revolution the bent lever falls abruptly. in the slot of the disc causing the trigger at the other end of the lever to be throw out of its. supports This causes the m c to be stopped by throwing the friction clutch on the driving. shaft out of gear or shifting the driving belt to wose pulley Simultaneously brake is also. applied to stop the m c immediately The length of the yarn wound on the beam. PREPARED BY,Abdullah Nur Uddin Rony Khurshedul Alam. BTEC 2nd Batch,Get this by www bdtextileinfo blogspot com. corresponds to one complete revolution of the wrap wheel This length can be varied by. changing the number of teeth of the worm wheel 3 the wrap wheel 5. Q Describe the functions of components of creel and head stock that are. used in warping m c,Dhaka Textile 04 05 06 07 Noakhali Textile 08. Function of components of creel, 1 Cone or cheese spindle of high speed peg for sectional warping. 2 Thread guide To pass through the yarn in the reqd way. 3 Tensioner To keep the yarn always in a uniform tension. 4 Yarn cleaner To remove various faults of yarn like slubs neps etc. 5 Suction fan or blower To remove the dirt dust from the yarn. 6 Breakage indicator To indicate breakage in package. 7 Stop device To stop the m c when yarn will be broken. Features of components of Head stock, 1 Adjustable or variable v reed or wraith To control the width of the warp beam.
2 Measuring making device Measure the amount of warp yarn on the beam. marks the yarn, 3 Yarn speed controlling device To control the speed of yarn. 4 Pneumatic pressure unit To press the warp beam with the surface contact of. driving drum, 5 Break assembly It stop the m c after reqd length is wound on beam. 6 Driving drum Beam is in contact control with driving drum. 7 Stop motion Used to stop the m c after reqd length is wound on beam. 8 Beam bracket To support hold the beam, 9 Lease rod Used for separation of yarn individually. Q What is creel, The warps are prepared by placing the individual yarn packages in a large frame which is. called creel, There are mainly two types of creels used for the beam warping m cs a V creel b.
Rectangular creel, V creel consists of a wooden or metal frame arranged in the shape of a v with its apex in. line with the centre of the m c,V creel is mostly used than the rectangular creel. Fabric Manufacturing I,Mathematical Problems, Q Calculate the no of warper beams the length of warp that can be made. from 440 bobbins each of which contains lb of 60s cotton The no of. ends of warp reqd is 2200 Allow 5 waste yarn left on the bobbins. Dhaka Textile 06,Total wt of yarn 440 5 209 lbs,wt of warp in lb count 840. Length of warp yds,no of ends,209 60 840,4788 yds Ans.
Total no of ends 2200,No of beam 5 Ans,No of bobbins 440. Q Calculate the quantity of yarn in lbs which will be reqd for a set of 6 back. beams to be produced on a modern high speed beam warper The length of. warp on each beam is 24000 yds there are 462 ends on each beam count. 36s Allow 1 or 1 5 for waste during warping Dhaka Textile 07. Length of warp reqd per beam 24000 1 24360 yds,Total length of yarn in yds. Wt of yarn in lbs reqd for the set,Total length of yarn for the set. Length of warp in yds req d per beam no of ends per beam no of beams. 24360 462 6,67525920 yds,Wt of yarn in reqd for the set 2233 lbs Ans. Q Calculate the time reqd to prepare of 8 warpers beam on 2 improved. modern high speed beam warpers with warping speed of 560 yds. Calculated per min The length of warp on each beam is reqd to be. 36 00 000 yds Efficiency 80,PREPARED BY,Abdullah Nur Uddin Rony Khurshedul Alam.
BTEC 2nd Batch,Get this by www bdtextileinfo blogspot com. Actual production per m c per hr in yds,Calculated production in yds m cs hr 60 Effi. 560 60 26880 yds,Total length of warp in yds no of beams. Actual production in yds per m cs per hr no of m cs. 5 36 hrs Ans, Q Calculate the length of warp that can be produced per day of 8 hrs on an. improved high speed beam warper if the warping speed is 610 yds per min. The effi is 75,Dhaka Textile 05,610 60 8 yds, Actual production or Actual length of warp production 8hr 100.
219600 yds Ans, Q Calculate the production of a modern high speed beam warping m c from. the following particulars,R P M of winding drum 260. Diameter of winding drum 22,Efficiency 80,Time 8 hrs. Production 8hr, dia of drum r p m of the winding drum hr efficiency. Production 8hr,3 14 22 260 60 8 80,191581 860 yds Ans.
Q Calculate the production of a modern high speed beam warpn m c from. the folloeing particulars Rpm of winding drum 260 diameter of winding. drum 22 no of ends 420 time 8hrs efficiency 80 count 32. production 8hr in pound,Fabric Manufacturing I, dia of drum r p m of drum hr efficiency no of ends. Production,36 840 count 100,3 14 22 260 60 8 80 420. 36 840 32 100,2993 466 lb Ans,PREPARED BY,Abdullah Nur Uddin Rony Khurshedul Alam. BTEC 2nd Batch,Get this by www bdtextileinfo blogspot com.


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