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What is the purpose of the hydraulic brake system in the warping machine?
What is the purpose of the hydraulic brake system in the warping machine?
What is the function of the pressing drum in the warping machine?
What is the function of the pressing drum in the warping machine?
What is the purpose of the wind shield in the warping machine?
What is the purpose of the wind shield in the warping machine?
What determines the creel capacity of a warping machine?
What determines the creel capacity of a warping machine?
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What is the formula to calculate creel capacity?
What is the formula to calculate creel capacity?
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What is the maximum creel capacity of a warping machine?
What is the maximum creel capacity of a warping machine?
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What is the range of creel angle (θ) in a warping machine?
What is the range of creel angle (θ) in a warping machine?
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What is the relationship between creel angle (θ) and wing angle (α)?
What is the relationship between creel angle (θ) and wing angle (α)?
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What is the primary function of the leasing/dividing rods in a section warping machine?
What is the primary function of the leasing/dividing rods in a section warping machine?
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What is the purpose of the leasing comb in a section warping machine?
What is the purpose of the leasing comb in a section warping machine?
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Which of the following is NOT a component of the carriage in a section warping machine?
Which of the following is NOT a component of the carriage in a section warping machine?
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What is the primary function of the section reed in a section warping machine?
What is the primary function of the section reed in a section warping machine?
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What is the purpose of the measuring roller in a section warping machine?
What is the purpose of the measuring roller in a section warping machine?
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What is the function of the tension and guide roller in a section warping machine?
What is the function of the tension and guide roller in a section warping machine?
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Which of the following components is responsible for compressing the warp section over the drum to create a consistent layer during warping?
Which of the following components is responsible for compressing the warp section over the drum to create a consistent layer during warping?
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What is the purpose of the oil box in the carriage of a section warping machine?
What is the purpose of the oil box in the carriage of a section warping machine?
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What is the process of warping in rope form onto balls called?
What is the process of warping in rope form onto balls called?
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What is the range of yarn ends pulled from the creel in ball warping?
What is the range of yarn ends pulled from the creel in ball warping?
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What is the purpose of a lease string in ball warping?
What is the purpose of a lease string in ball warping?
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What is the device that collapses and condenses the sheet of yarn into rope form in ball warping?
What is the device that collapses and condenses the sheet of yarn into rope form in ball warping?
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How does yarn tension compare between sectional warping and direct warping?
How does yarn tension compare between sectional warping and direct warping?
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What is the characteristic of beam length in sectional warping compared to direct warping?
What is the characteristic of beam length in sectional warping compared to direct warping?
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What is the efficiency comparison between sectional warping and direct warping?
What is the efficiency comparison between sectional warping and direct warping?
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How many sized beams are produced from one warper's beam in direct warping?
How many sized beams are produced from one warper's beam in direct warping?
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What is the relation between the length of yarn and the amount of yarn wound on the beam?
What is the relation between the length of yarn and the amount of yarn wound on the beam?
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What factor has a direct relation to the total number of sections in the warping process?
What factor has a direct relation to the total number of sections in the warping process?
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Which type of creel is predominantly used in sectional warping machines?
Which type of creel is predominantly used in sectional warping machines?
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How is the yarn passed from the creel to the sectional warping drum?
How is the yarn passed from the creel to the sectional warping drum?
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What is the primary purpose of removing all sections simultaneously from the drum?
What is the primary purpose of removing all sections simultaneously from the drum?
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Which of the following statements is true about the headstock of a sectional warping machine?
Which of the following statements is true about the headstock of a sectional warping machine?
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What does the cone angle affect in the yarn winding process?
What does the cone angle affect in the yarn winding process?
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What type of warping is characterized by a slow speed and is typically used in creating patterned yarns?
What type of warping is characterized by a slow speed and is typically used in creating patterned yarns?
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What is the purpose of the touch screen panel in the context provided?
What is the purpose of the touch screen panel in the context provided?
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What motion is defined as 'feed' in the context of the carriage's movements?
What motion is defined as 'feed' in the context of the carriage's movements?
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What is the function of the swift/dresser?
What is the function of the swift/dresser?
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Which of the following is not mentioned as a parameter for the machine specifications?
Which of the following is not mentioned as a parameter for the machine specifications?
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What is indicated by the 'creel capacity' specification in the context provided?
What is indicated by the 'creel capacity' specification in the context provided?
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How is the package withdrawal and beam doffing process initiated?
How is the package withdrawal and beam doffing process initiated?
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What affects the taper angle of the swift/dresser?
What affects the taper angle of the swift/dresser?
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What does the movement of section cause in the carriage?
What does the movement of section cause in the carriage?
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Study Notes
Warping Process and Equipment
- A motor drives the system, complemented by hydraulic brake systems on both sides for immediate stopping during yarn breaks.
- The pressing drum compacts the beam and measures yarn length, with hydraulic movement for attachment or detachment.
- Pressing drum lifts away at the beam brake to prevent yarn friction and potential damage.
- Wind shield protects the warping beam from contaminants and shields the operator during operation, activating automatically with the machine start.
Creel Capacity
- Maximum number of yarn packages on the creel defines its capacity, currently reaching up to 1296.
- Capacity formula: Creel capacity = 2 × number of rods × number of spindles.
- Zig-zag comb adjusts to set maximum and minimum creel capacity.
- Creel angle (θ) ranges between 30° and 35°, while wing angle (α) is half of the creel angle.
- Yarn wound on the beam is directly proportional to yarn length and cone angle, but inversely proportional to number of ends/section.
- Number of sections is influenced by creel capacity (indirect relation) and total ends in warp sheet (direct relation).
Sectional Warping Machine
- Contains two main parts: the creel and headstock, with an H-type creel often used due to its slower speed capabilities.
- Yarn runs from the creel, through leasing rods and combs, to the sectional warping drum for winding into sheets.
Headstock Components
- Leasing/Dividing Rods: Separate yarns for easier leasing.
- Leasing Comb: Separates warp yarns into sheets with alternating open and block dents.
- Carriage: Moves and carries essential parts including section reed and measuring roller.
- Swift/Drum/Dresser: A hollow steel cylinder that wraps yarn sections before they are passed to the beam.
Carriage Motion
- Traverse Motion: Slow movement enables yarn layer climbing on the cone for proper leasing.
- Movement of Section: Moves the carriage for section changes.
Swift/Drum/Dresser Attributes
- Diameter ranges between 50"-60" with tapered angle dependent on yarn count, type, and ends/cm.
Machine Parameters
- Working width: 2300 mm - 3600 mm
- Warping speed: 600 m/min
- Beaming speed: 160 m/min
- Drum diameter: 1000 mm
- Section width: 20 mm - 360 mm
- Creel capacity: 720
- Cone angle: 7°, 9°, 12°
Package Withdrawal and Beam Doffing
- Warp yarn sheets are transferred to the warper’s beam in a beaming process, switching from warping mode.
- Yarn tension is higher in package withdrawal compared to sectional warping, leading to more yarn wound on the beam.
- Sizing produces one sized beam from multiple warper’s beams, with direct warping being more efficient.
Ball Warping Process
- Involves warping in rope form onto balls, suitable for denim manufacturing.
- A two-stage process, pulling 350-500 yarn ends from the creel through a device maintaining yarn separation.
- Lease strings are placed periodically across yarn to assist with separation.
- Yarns condense through a funnel-shaped device known as a trumpet or condenser into rope form.
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Description
This quiz covers the components and functionalities of a warping machine, including the motor-driven system, hydraulic brake, pressing drum, and beam brake.
