Download as PDF, PPTX
More Related Content
Similar to An overvew on Speed Frame (Simplex) Machine.pdf
An overvew on Speed Frame (Simplex) Machine.pdf
- 1.
- 2. preencoded.png Introduction The speed framebridges the gap between drawing and spinning. It prepares sliver for optimal spinning performance. Speed frames have been shown to increase production speeds by 25% compared to older methods. 1 Bridging Connects drawing and spinning 2 Preparing Optimizes sliver for spinning 3 Increasing Boosts production speed By Sayan Kundu
- 3. preencoded.png Historical Development: From Bobbinto Automation The speed frame has evolved from early models to modern automation. Key innovations include flyer design, drafting systems, and auto-doffing. Platt Saco Lowell and Rieter Machine Works made substantial contributions. 1 Early Models Basic flyer design. 2 1950s First automated versions. 3 Modern Era Auto-doffing systems. By Sayan Kundu
- 4. preencoded.png Core Functions: RovingFormation Unveiled The speed frame converts sliver into roving. Drafting reduces sliver thickness (draft range: 5-15). Twisting imparts strength (twist range: 0.5-3 TPI). Winding creates a suitable package. Roving Drafting Twisting Winding By Sayan Kundu
- 5. preencoded.png What is Roving? A roving is a continuous fibre strand drafted from a sliver and given cohesion by either inserting a small amount of twist or compacting the fibres with an oscillating apron. It is subsequently drafted and twisted to be spun into a yarn. By Sayan Kundu
- 6. preencoded.png Working Principle: A Step-by-StepBreakdown Drafting involves roller speeds and fiber control. The flyer twisting mechanism inserts twist. Bobbin winding creates layer formation and package density. Understanding material flow is key. Drafting Fiber control via rollers. Twisting Flyer twist insertion. Winding Layered package creation. By Sayan Kundu
- 7. preencoded.png Key Components: Rollers Fiber movementand alignment. Flyers Twist insertion. Bobbins Package construction. Creel Sliver passes through it By Sayan Kundu
- 8. preencoded.png Creel Also known asTransport Rollers. Care must be taken as false draft may arise in the creel zone due to less strand coherence on account of high degree of parallelization of the fibres – a) Sliver feed-cans should be arranged in a simple manner so that the operator can access every can easily, in case of sliver breakage, replacing empty cans b) Drawn more or less vertically out of the can. The relative placement of the cans and the guide rollers should be such that the slivers are withdrawn vertically from the cans. If not, slivers will rub against the edges of the cans leading to sliver damage and increased mass variation. C) Smooth running of transport rollers using perfect drive, usually effected by chains By Sayan Kundu
- 9. preencoded.png Rollers Top Drafting Rollers ➢Coated with material made by rubber ➢ Gives greater gripping during the time of material passing ➢ Prevent from slippage ➢ Rollers are pneumatic loadig By Sayan Kundu
- 10. preencoded.png Bottom Drafting Rollers AxialFlutes Helical Flutes Knurled Flutes Design is made to prevent from slippage In case of simple 3 over 3 Drafting arrangements generally, Axial Flutes presents in Middle Drafting roller Helical Flutes presents in Back Drafting roller Knurl Flutes presents in Front Drafting roller By Sayan Kundu
- 11.
- 12. preencoded.png Upper apron –shorter having thickness of 1mm, held taut by tensioning devices and made of either of leather or more commonly synthetic rubber; Lower apron – longer, made of leather or synthetic rubber, running over guide bars (nose bars) to positions close to the nip line of the delivery rollers, thickness around 1 mm. Apron By Sayan Kundu
- 13. preencoded.png Flyers The flyers aremade of light alloys instead of steel. The reasons are as follows: • Reduces the spread of legs ensures controlled bobbin build. • Reduces power consumption Flyer is doing a major part that it has to lead the very sensitive strand from the flyer top to the package without introducing the false drafts. Because, Fiber strand has only protective twist and is very liable to break. It is passing through flyer which is rotating more than 800-1500 rpm, so it should be protected against air current. By Sayan Kundu
- 14. preencoded.png Bobbin Bobbins come insizes like 12x6 and 11x5. Creels feed sliver (up to 48 cans). By Sayan Kundu
- 15. preencoded.png Types of SpeedFrames: Advance Technology Traditional speed frames have basic features (10-15 kg/hour). High-speed frames enhance production (20-30 kg/hour). Auto-doffing models improve efficiency (doffing time < 2 minutes). Traditional Basic features. High-Speed Enhanced output. Auto-Doffing Automated bobbin change. By Sayan Kundu
- 16. preencoded.png Advanced Technologies: DrivingInnovation Auto-doffing systems automate bobbin handling (95%+ efficiency). Electronic drafting improves yarn quality (10-15% CV% improvement). Energy efficiency reduces power consumption (up to 20% savings). 1 Auto-Doffing Automated bobbin handling. 2 Electronic Drafting Precise control. 3 Energy Efficiency Sustainable operation. By Sayan Kundu
- 17. preencoded.png Production Formula andConclusion 90% Yarn quality 30% Increased Production 20% Reduced Labor By Sayan Kundu
- 18.