Before processing cotton, wool and silk fibers into fabrics, the process of removing impurities and short fibers in the fibers with a combing machine is called combing. The texture, washability and durability of the fabric produced by this process are greatly improved compared to carded fabrics. The composition of the comber and the combing process are introduced below.
Contents
1 Mechanism composition of the comber2 Combing process in spinning2. 1 Cylinder carding phase2.2 Preparatory phase before separation2.3 Disengaging engagement phase2.4 The preparatory phase before cylinder carding3 Advantages and disadvantages of combed cotton
Mechanism composition of the comber
The mechanism composition of the comber: feeding mechanism, pinch mechanism (holding), carding mechanism , extraction and separation mechanism, stripping mechanism and cleaning mechanism.
Combing process in spinning
The kinematic coordination relationship of the main parts on the comber is This is indicated by a dial. The disc is mounted on the comber and rotates synchronously with the cylinder, commonly referred to as the index disc. The index plate is divided into 40 equal parts along the circumference, and each equal part is 9 ° becomes an index.
The work cycle refers to the time interval between the combing cylinder of the intermittent comber, which corresponds to the two operations of combing the whiskers. This means: The first row of needles in the combing cylinder goes to the bottom end of the jaws, the first row of needles goes back to the bottom end of the jaws, and a working cycle is often also called the clamping time.
A movement cycle of a combing machine can be in four phases:
Cylinder carding phase. preparatory phase before separation. disengagement phase. The preparatory phase before cylinder carding. Cylinder carding phase
Cylinder carding starts from the front row of needles in the cylinder until the last row of needles breaks the cotton tuft leaves. At this stage, the working and moving conditions of the main parts are as follows:
Tongs: The upper and lower tongs are closed around the staHold your hair and the nippers move backwards and then forwards.
Top comb: Comb the front end of the beard to remove short fluff and impurities.
Top comb: First swing and then forward (not involved in combing), but not in contact with the beard hairs.
Separation roller: basically static state.
Cotton feed roller: stop cotton feed.
Preparation phase before separation
The preparation phase before separation begins from the end of cylinder carding to the start of separation. At this stage are the labor and movementConditions of the main parts as follows:
Tongs: The upper and lower tongs gradually open from closed, the tongs keep moving forward, and the jaws gradually open.
Cylinder: Rotating continue without combing the cotton tufts.
Upper Comb: Continue swinging forward and start touching the cotton tufts.
Separation Roller: From stationary to reverse state, pour the cotton web into the machine, ready to be combined with the bundle of fibers sent by the nipper.
Cotton feed roller: start feeding cotton.
Disengagement -Phase
The separation and connection phase starts from the front of the separation of the fibers to the end of the separation. The working and movement conditions of the main parts in this phase are as follows:
Tongs: The openings of the upper and lower tongs are enlarged andcontinue to move forward to send the whiskers into the separator jaws.
Cylinder: Continue to rotate without combing the cotton clumps.
Upper Comb: Swing backwards to comb into the Introduce beards, retain neps, impurities and short fibers in the beards behind the upper comb and are carried away by the cylinder in the next working cycle.
Separation roller: rotate clockwise, extract the fibers sent by the pliers and put them on top of each other at the end of the original cotton web for output.
Cotton feed roller: Continue feeding cotton.
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