Q.1. What information is needed to calculate the Total Needle Count on Flat Knitting Machines?
C.1. Machine working width inches (inches) and machine fineness (E) (Fein) are needed when calculating the total number of needles on flat knitting machines.
Q.2. What is the working width in flat knitting machines, please explain?
C.2.Working width; is the distance between the first needle and the last needle on the flat knitting machine needle plate. Working width is given in imperial inches or cm. However, in calculating the total number of needles, the working width of the machine is taken as inches.
Q.3. How to find the machine fineness on a flat knitting machine?
C.3. Machine fineness (fein) (E); is the number of needles per 1 inch (2.54 cm) on the needle plate.
S.4. What information is needed to calculate the total number of needles on single-plate flat knitting machines?
C.4. Total number of needles, Machine working width (inches) and Machine gauge (inches).
Q.5. What information is needed to calculate the total number of needles on double plate flat knitting machines?
C.5. In double plate weft knitting machines, there are as many needles on the back plate as the number of needles on the front plate. Therefore, the total number of needles in a plate is multiplied by 2.
Q.6. Calculation of Total Needle Count in Circular Knitting Machines What information is needed to do this?
C.6. While calculating the number of needles in circular knitting machines, the machine diameter (pus) is used because the needle plate of the machine is cylindrical instead of the working width in flat knitting machines. The machine diameter is calculated in inches, just like the working width on flat knitting machines.
S.7. What does machine diameter (haze) mean in Circular Knitting Machines?
C.7. In circular knitting machines, the cylinder is the diameter of the needle plate. Although the machine diameter is stated as haze, the unit of measurement is inches.
Q.8.What information is needed to calculate the total number of needles on single plate circular knitting machines?
C.8. Machine diameter (haze) , π constant number and Machine fineness (Fein)
Q9. How to calculate the total number of needles in single plate circular knitting machines?
C.9. Total Number of Needles: Machine diameter (haze) x 3,14 x Machine thickness (Fein)
S.10.How to calculate the total number of needles in single-plate flat knitting machines?
C.10. Total number of needles = Machine working width (inch) x Machine thickness (inch)
S.11.How to calculate the total number of needles in double plate flat knitting machines?
C.11.Number of needles = Total number of needles in a plate x 2
S.12. What information is needed to calculate the total number of needles on double plate circular knitting machines?
C.12. Since there are needles in the cover needle plate as well as the number of cylinder plate needles, the total number of needles in a single plate is multiplied by 2.
Q.13. Explain the machine fineness ( fein ) ( E ) in weft knitting machines?
C.13. It is the number of needles per 1 inch on the same needle plate on flat and circular knitting machines. It is denoted by the letter E and read as fain.
The inch, which is accepted as the international unit of measurement, is equivalent to 2,54 cm (25,4 mm). In knitting machines, there is a relationship between the machine fineness and the yarn thicknesses that can be used in the machine. As the machine fineness increases, the yarn fineness also increases. The thread should be suitable for the fineness of the machine. If a thick thread is given, the needle hook will break, and if a thinner thread is given than it should be, gaps will form between the loops and it will have the appearance of a net.
Q.14. What happens if the yarn suitable for the machine fineness is not used and thick yarn is used in weft knitting machines?
C.14. In weft knitting machines, if the yarn suitable for the machine fineness is not used and thick yarn is used, the needle hook will break,
Q.15. What happens if a finer yarn is used for machine fineness in weft knitting machines?
c.15. In weft knitting machines, if a thinner yarn is used than required for machine thinness, gaps will form between the loops and it will have the appearance of a net.
Q.16. What is the relationship between machine fineness (E) and yarn count (Ne) in weft knitting machines?
C.16. The higher the fineness of the machine, the finer the weave to be obtained from this machine.
Q.17. What is the relationship between machine fineness (E) and number of needles in weft knitting machines?
C.17. The higher the machine fineness (E), the greater the number of needles. Needle selection should be suitable for machine fineness, otherwise undesirable faults will be observed in the fabric.
Q.18. What does the machine scale (t) mean in weft knitting machines?
C.18. It is the distance between two adjacent needles on the same needle plate in flat and circular knitting machines.‖ It is denoted by , its unit is mm.
Q.19. In weft knitting machines, show the needle head thickness and needle spacing by drawing the machine scale.
C.19.
Q.20. What information is needed to calculate the machine division in weft knitting machines?
C.20. Needle head thickness and Needle pitch
Q.21. How to calculate machine division in weft knitting machines?
C.21. Machine Scale = Needle head thickness + Needle pitch
S.22. What is the fabric width in weft flat knitting machines?
C.22. Fabric width is the value in cm of the distance from one edge of the fabric to the other.
Q.23. What does the fabric width adjustment depend on in weft flat knitting machines?
C.23. The fabric width can be adjusted to the desired extent, not being larger than the working width in flat knitting machines.
Q.24. How are needle and thread movements in flat knitting machines and circular knitting machines?
C.24. The needle is fixed in flat knitting machines. The yarn is movable (due to the shuttle movement). (since the shuttle is stationary)
Q.25. What does fabric width adjustment depend on in weft circular knitting machines?
C.25. The main factor that determines the fabric width in circular knitting machines is the machine diameter.
P.26. What are the points to be considered when measuring the width of knitted fabric?
C.26. Measuring should not be done as soon as the fabric comes out of the machine. Because the fabric was stretched during production and is in a different state from its actual dimensions. For this reason, the fabric should be rested for a while after leaving the machine, and then the measurement should be made by considering the following points.
A-Measurement should be done from places where there are no wrinkles in the knitted fabric.
B-Measurement process; While the fabric is being made, the fabric should neither be stretched nor the pot should be left, it should be made from the normal-looking part of the fabric.
C-Measurement is done several times from different parts of the fabric, the deviations are determined by taking the average.
D-Measurement should be done from neither the head nor the last part of the fabric ball. The midpoints of the fabric ball should be preferred as the machine does not get the desired speed when the machine is first started and when the machine is stopped.
S.27. How to calculate fabric width in Weft Flat knitting machines?
C.27. Machine Working Width (cm) = Total Number of Needles x 2,54 / Machine thickness
P.28. What are the necessary information for fabric width calculation in Weft Flat knitting machines?
C.28. Machine Working Width (cm)-Total Number of Needles - Machine thickness
P.29. Draw the fabric width schematically on flat knitting (knitwear) machines?
C.29.
P.30. Draw schematically the working width of flat knitting (knitwear) machines?
C.30.
Q.31. According to what features is the Fabric Width determined in Single and Double Plate Flat Knitting (Knitwear) Machines, please explain?
C.31. It can be worked in the desired width and range in flat knitting (knitwear) machines. In these machines, the width of the widest fabric that can be worked is calculated in the calculation of the fabric width. The total number of needles used here is the total number of needles in the single-plate flat knitting (knitwear) machine calculation because the fabric width does not change in single and double-plate, only the surface of the fabric changes. Therefore, the number of needles in a single plate is taken. Machine working width also indicates the highest width that the knitted fabric can take on the calculated machine..
P.32. Fabric Width Calculation for Circular Knitting Machines What are the necessary information for
C.32.Fabric Width (cm) - Machine Diameter (Pus) - Number of pi - Machine Fineness (Fein) - Bar density ( cm )
P.33. In circular knitting machine How to calculate fabric width?
P.33. Fabric Width = Fabric Width (cm) x Machine Diameter (Haze) x Number of pi x Machine Fineness (Fein) x Bar density (cm )
Q.34. What does bar frequency mean?
C.34. The number of loops per 1 cm is called the bar density.
P.35. What are the Factors Affecting Fabric Width in Weft Knitted Fabrics?
C.35. Machine Diameter or Machine Working Width - Machine Fineness and Total Number of Needles - Knitting Type and Pattern Structure - Loop Bar Density - Thread Type and Number
P.36. Explain how machine diameter or machine working width affect fabric width in weft knitting machines?
C.36.In circular knitting machines is the diameter of the circle formed by the cylinder needles. It is the distance of any needle in the cylindrical circle from the needle directly opposite it. The machine diameter determines the maximum fabric width that can be knitted. It is possible to obtain wider fabric as the machine diameter increases.
In flat knitting machines On the other hand, the working width determines the fabric width. If the working width of the machine is 2,50 meters, it is not possible to obtain knitting above this size in this machine.
P.37. What criteria does fabric production depend on in order to produce fabrics in various widths with a slight difference from the machine with the same diameter in a circular knitting machine?
C.37. Knitting pattern - Fabric weight, stitch length adjustment, stitch density - Yarn number, yarn type - Finishing operations.
S.38. Explain how Machine Fineness and Total Needle Count affect fabric width in weft knitting machines?
C.38. The machine fineness (E) and the total number of needles in the machine affect the width of the knitted fabric. In flat and circular knitting machines, the machine thickness determines the number of loop bars per cm on the fabric. For example, when the measurement is made on the fabric produced in two machines with the same working width but different thickness, the number of mays per cm will be different. The width of the fabric knitted on a thinner machine will be wider than the other fabric. Since the total number of needles is based on the number of needles working in flat knitting machines, it does not affect the fabric width in circular knitting machines as much as it does in flat knitting machines.
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