Simplex Machine is used in the spinning mills. For Ring yarn Simplex machine is necessary. Simplex machine is the machine which converts the drawn sliver into roving form. Simplex process is the previous process of ring spinning process. A slight twist is given onto the roving. We can find different faults in the speed/roving/simplex frame. They […]
What are the Change places in Speed Frame and their Effect in Changing?
Different changes take place in the speed/roving/simplex frame and affects in yarn count. Now we are discussing about it – Draft change pinion (D. C. P): A large wheel reduces the draft and so gives a coarser hank (where the D. C. P is a driven one). Draft constant change pinion: The larger the draft constant change wheel, the greater […]
Roller Setting in Speed/Simplex/Roving Frame
Roller setting is a very important task in the spinning department. Incorrect settings lead to creation of various problems and hampers spinning conditions. The speed of the leading roller is always greater than the preceding roller. Incorrect setting leads to the variation of weight/unit lengths. If the setting between two pairs of drafting roller is […]
Importance of Roller Weighting | Advantages of Spring Weighting
The roller weightings generally applied to the top rollers by a weight hanging below the roller beam are about 20 lbs for a double boss front roller, 14 lbs for a middle roller, and 10 lbs for a back roller, the middle and back rollers may be saddle weighted (spring weighted). In this case, the […]
Changes to be Made in a Speed Frame when a Certain Hank is Made Finer
Suppose, a certain hank is made on a machine and it is desired to change to a higher count. The same sliver or roving is used in the creel. The necessary changes are as follows: Draft: This must be altered in order to make the delivery roving finer. The draft change pinion (D.C.P) will therefore be […]
Functions of Cone Drum, Flyer, Bobbin Tapper and Differential Motion
Cone Drum As each layer of roving is added to the bobbin in the speed frame, its diameter is increased. In flyer leading and bobbin leading frame, it is necessary to increase or decrease the bobbin rpm respectively to maintain a constant surface speed on the bobbin surface as each layer is added to its diameter […]
Difference Between Apron and Roller Drafting System
The drafting mechanism is an essential part of the spinning section in the Textile Industries. Without this mechanism, higher or lower-count yarn is not possible. You may also like: Fibre Vs Yarn Vs Fabric: Find the Differences There are mainly two types of drafting systems. One is apron drafting, and another is roller drafting. Both drafting […]
Drafting Systems used in Speed/Simplex/Roving Frame | Description a Modern Drafting System
What are the Different Drafting Systems used in Speed Frame? The following drafting systems are used in speed frame: Description of Casablancas two-zone Drafting System The Casablancas two-zone drafting system is widely used for cotton on speed frame. The back zone draft takes the place between two pairs of roller, after which follows a zone with […]
Objects and Operations of Speed/Roving Frame
Objects of Speed Frame The purposes or objects of speed frame are: The package so produced is tapered or conical at each end and made sufficient firm so that it can be transferred without damage to the roving and yet will unwind readily at the next machine. Operations involved in Speed Frame The following operations are involved […]
Why the Simplex/Roving Frame is a Necessary Evil
The simplex or roving frame is a modern form of speed frame. It is also known as fly frame. It is capable of imparting higher draft to material (up to 25). One of the noticeable features of this m/c is to absence of sound & noise. The higher speed of this m/c (spindle speed about 1500 r.p.m) […]