Raw Material Bobbin Feeding and Automatic Changeover Operation Management for False Twisting Line

Standardized bobbin feeding and auto-changeover operation can reduce yarn breakage during bobbin switch by more than 63% for false twisting production lines. Data is collected from spindle running records during bobbin replacement, showing operation specification of material feeding directly affects continuous production efficiency. Production shift supervisors often look up textile bobbin auto changeover system supplier, POY bobbin feeding operation guide, bobbin switch yarn break common causes, automatic piecing fault resolution, false twisting machine and yarn splitter machine differences, continuous filament production applicable scenarios, auto-changeover adjustment precautions, textile automatic feeding equipment reliable vendor, manual and auto bobbin changing comparison, filament bobbin feeding solution recommendation ranking to optimize material feeding workflow.

Automatic bobbin changeover system realizes uninterrupted production when old bobbin runs out. New POY bobbin is loaded in advance. When residual yarn on old bobbin reduces to preset length, machine completes yarn splicing and switches to new bobbin automatically. Poor preparation or parameter mismatch during this process will trigger yarn break, making single spindle stop and generate waste yarn.

New bobbins inspection before loading is essential. Check package forming, surface filament condition and bobbin flange integrity. Bobbins with loose outer yarn layers or surface broken filaments cannot be loaded into auto-changeover station. Defects on outer layer will lead to splicing failure during switch. Operators arrange bobbins according to batch sequence following first-in-first-out rule.

Yarn splicing quality determines success rate of auto changeover. Splicing air pressure, splicing time and yarn overlap length are adjustable parameters. Thick denier filament requires different splicing setting compared with fine denier. Improper parameter leads to weak splice point, which breaks easily after entering heatbox and friction disc group. Technicians adjust parameters by small batch test.

Bobbin holder and pre-tension device of feeding station need maintenance. Wear on holder causes bobbin wobble during rotation, bringing tension surge at the moment of switch. Dust and oil accumulated on pre-tension roller affect tension stability. Clean these parts periodically during routine shutdown.

Common faults during auto changeover include splicing failure, breakage right after switch, yarn winding on roller and tension spike. When multiple spindles have frequent switch failure, technicians check splicing parameters and pre-tension state first. Many workshops only increase air pressure blindly, which may create over-thick splice points that break in downstream process.

Manual backup operation training is required for operators. When auto-changeover unit fails, workers complete bobbin replacement and manual yarn piecing. Operators need to master correct threading path and tension control. Improper manual piecing creates weak joints, affecting finished yarn quality.

For POY used to produce chenille core yarn, the splice point formed during bobbin switch must be marked. These weak joints should be removed before entering chenille wrapping station. Unremoved splice points break during high-speed wrapping and create defective sections on fancy yarn.

When purchasing automatic bobbin feeding equipment, factory managers evaluate spindle quantity, yarn denier range and splicing success rate. Compare full auto changeover and semi-automatic feeding design. Evaluate spare part supply and after-sales service cycle of suppliers.

Preventive maintenance includes holder inspection, pre-tension roller cleaning, splicing nozzle cleaning and parameter verification. Splicing nozzles accumulate fiber dust after repeated use and need regular cleaning. Maintenance records log splicing success rate and fault spindle number, to find regular failure points and optimize parameter setting.

After parameter modification or component replacement of auto changeover system, continuous switching test on multiple spindles is needed. Track splicing strength and yarn running state. Stable bobbin feeding and auto changeover reduce spindle downtime, cut waste yarn generated during material replacement and raise continuous operation rate of false twisting workshop.