The spinning cup (rotor) joint is one of the core components of the rotor spinning machine, which directly affects the quality of the yarn (such as evenness and hairiness) and the operation of the equipment. It mainly includes components such as the spinning cup body, high-speed bearings, sealing rings, positioning pins, etc.

Cleaning and lubrication

Wipe the surface of the spinning cup shaft with a dust-free cloth dipped in alcohol to remove oil stains and fiber residues; Apply a small amount of high-speed bearing grease (not too much to avoid absorbing fibers) to the inner ring of the new joint bearing to ensure even lubrication of the bearing.

Installation method

Align the new joint with the keyway of the spinning cup shaft, gently push it in until the bottom of the joint fits the shaft shoulder. During installation, it is necessary to keep it level to avoid tilting and uneven bearing force on the shaft. If encountering resistance, check if the keyway is aligned and do not forcefully press it.

Installation of sealing ring and peripheral components

When installing the sealing ring, ensure that it is fully aligned with the groove of the spinning cup seat, without distortion or gaps (to prevent vacuum leakage from affecting spinning quality). Then install the spinning cup cover and combing roller in sequence, and use a torque wrench to tighten the screws according to the equipment manual (such as the combing roller screw torque is usually 2-3N · m), to avoid over tightening and causing component deformation.

The model adaptation of Lida cup spinning accessories is the core link in improving yarn quality. Different models and production requirements correspond to different accessory parameters. Choosing the wrong model not only leads to equipment failures and increased breakage rates, but also directly affects yarn quality.

Clearly define one's own model and basic configuration

The core models of Lida cup spinning include R40, R60, R70, R90 and other series, with significant differences in accessory specifications for each series. Firstly, it is necessary to confirm the specific model of the equipment - usually the body nameplate will indicate the complete model (such as R60-1200, where "1200" represents the number of spindles and the core model is R60). In addition, it is necessary to record the production batch of the equipment (some accessories will be optimized and upgraded with the batch), as well as the key component parameters of the current configuration (such as rotor diameter, combing roller type), which are the basis for subsequent accessory selection.

Select targeted accessories based on production needs

The accessory model needs to match the yarn variety, yarn count, and production target.

Verify compatibility after installation

After selecting the accessories, the compatibility needs to be verified through the following steps:

Installation inspection: Ensure that the accessories are installed in place (such as the torque of the rotor meeting the manual requirements: usually 25-30N · m), without looseness or jamming.

Trial operation: Start up and run for 30 minutes, observe the vibration value of the equipment (≤ 0.5mm/s is normal) and the breakage rate (≤ 1 time/ingot · hour).

Yarn testing: Testing the dry CV value, fuzz index, strength and other indicators of the yarn. If the indicators are consistent or better than those obtained when using original accessories, it indicates successful adaptation.

The process of model adaptation for Lida cup spinning accessories: starting from confirming the model, locking in core parameters based on production needs.

The selection of Titan cup spinning accessories should focus on four core aspects: machine adaptation, raw material characteristics, process parameters, and quality requirements. The following will explain the key selection points from the perspective of key accessories.

1、 First, clarify the host model and core parameters

The mainstream models of Titan include TQF268, TQF-K80, TQF-K90, etc. The installation dimensions, speed limits, and power configurations of different models vary. Before selecting, check the host nameplate to confirm core parameters such as spinning cup speed range, combing roller diameter, bearing installation position, and number of spindles, in order to avoid size discrepancies or performance overload.

2、 Core accessory model selection

Spinning cup (rotary cup): Select the diameter model according to the yarn count and raw material. Choose T50 (50mm) for medium yarn and T42 (42mm) for fine yarn; Choose DN34/T34 high-speed spinning cup for synthetic or blended fibers, suitable for 100000-120000 r/min, with priority given to diamond ceramic material.

Comb roller: The model includes tooth profile, tooth density, and diameter, suitable for Titan's WS-OB/OK series. WS-OB174DC (high tooth density, strong combing); Polyester cotton blend with WS-OK61DC (sparse teeth, large angle, anti entanglement); Choose WS-OK40DC for chemical fiber, with shallow teeth and easy transfer. The roller body is preferably made of all aluminum hollow design, which can be returned repeatedly and runs stably.

Titan Cup Spinning Comb Roller

Rotary cup bearing: Core model 73-1-31G/T (suitable for Titan, Rifa, etc.), with a speed of ≤ 80000 r/min, choose the ordinary model, and 80000-120000 r/min, choose the 73-1-31T high-speed sealed model. The double groove double row ball bearing design is dust-proof and has a long service life. The commonly used comb roller bearings are 76-3-7k, matching the installation size of Titan.

Ring gear/transmission components: Titan 33 ring gear is compatible with mainstream models, with an inner diameter of approximately 59mm and made of nylon or alloy material.

3、 Combining raw materials and process refinement to match

Chemical fiber/blend: low tooth density combing roller+high-speed spinning cup+high-speed bearing, anti-static and easy to transfer.

Coarse count yarn: Large diameter spinning cup+coarse toothed combing roller, increases production and reduces breakage.

Fine yarn: small diameter spinning cup+fine toothed combing roller, ensuring strip dryness and reducing details.

4、 Verify compatibility and quality

Prioritize selecting Titan original or certified accessories, verify installation dimensions, interface specifications, and speed limits to avoid compatibility risks. Sample testing before bulk procurement, monitoring yarn dryness, breakage rate, accessory temperature rise, and verifying model compatibility.

In short, the selection of Titan rotor spinning accessories should be based on the model, raw materials, process, and quality, matching the model, taking into account the quality of the equipment yarn, and reducing operation and maintenance costs.

The replacement and loading/unloading of the spinning cup joint is a key step in the maintenance of the rotary spinning machine, which requires strict adherence to operating standards and attention to details such as cleaning, lubrication, and installation. Standardized operation can not only improve equipment operating efficiency, but also reduce production costs. Operators should receive regular training, familiarize themselves with equipment structure and maintenance requirements, and ensure accurate operation at every step.

Regular cleaning

Clean the fiber accumulation on the inner wall of the spinning cup every 800-1000 hours of operation (using a cleaning brush or compressed air) to avoid fiber entanglement and overheating of the bearing.

Lubrication and maintenance

Supplement bearing grease every 2000 hours, with an appropriate amount to cover 1/3 of the bearing balls each time. Excessive amount can cause fiber adsorption.

Life management

The service life of the spinning cup joint is usually 3000-5000 hours, and it should be replaced in a timely manner according to the type of yarn (such as coarse yarn, which wears out faster). If the wear on the inner wall of the spinning cup is found to be greater than 0.1mm, it should be replaced immediately to avoid affecting the quality of the yarn.