Structural Characteristics of Hot Air Stenter Machine

  • The Hot Air Stenter machine is mainly composed of the feeding part, the weft feeder, the chain, the oven body, and the falling cloth. Apart from that, chemical systems and oil furnace heating systems.



    1.Feeding part


    The structure is relatively simple, consisting of a trough and a roll. The cloth enters the trough, carries the chemical material, and then presses the excess chemical material through the roll to clean it. Therefore, the chemical material on the cloth is very uniform, which is a prerequisite for obtaining a high quality styling cloth.


    It is necessary to always pay attention to whether the pressure on the left and right sides of the roll is consistent. Otherwise, the side with less pressure is loaded more, while the one with higher pressure is less loaded, and the cloth will have quality problems such as inconsistency.


    2. Weft feeder


    The weft aligner on the fixed machine has four sets of sensors. Each sensor consists of two parts: illuminating and sensitizing. The action part adopts a hydraulic system. When the signal of the slanting size is transmitted back to the control board, the control board will issue a command to drive the hydraulic system to adjust the angle of the curved roller or the straight roller to correct the weft. Specifically, when the center of the cloth is different from the two sides, the curved roller will move; when there is a difference between the left and the right, the straight roller will move.


    3. Chain part.


    The stenter of the cloth on the setting machine is produced by a chain. The chain of the setting machine is driven by a high-power motor near the falling cloth, equipped with a needle plate. When the cloth enters the chain, it is pressed by the brush wheel on the cloth wheel to press the small needle. The chain of this typesetting machine is different from other setting machines. It can control the stretching of each needle to control the effect of each needle, and some setting machines cannot adjust each needle, only be adjusted into a rectangle or a trapezoid.


    4. Oven body.


    The hot air setting machine has eight sets of ovens. Under the action of the circulation fan, the air is continuously sprayed on the cloth surface by the fine holes on the star-shaped jet rack. After the hot air contacts the wet cloth, the temperature drops and the humidity rises, discharged from the large hole in the star-shaped jet frame, passing through the filter, continuously circulated after being heated by the heat exchanger which is located below the filter with hot oil. The heat exchanger has many thin fins for efficient heat exchange.


    5. Falling cloth and rolling device.


    The setting machine can be arranged in two ways, depending on the production needs, in the form of a cloth or a roll. Both methods are driven by a motor to drive the chain. When the cloth is discharged by the roll cloth, the tension stability of the cloth is required to be high, and the cloth needs to pass through a tension adjusting guide roller controlled by the air cylinder. In the case of a cloth-type drop cloth, the cloth does not need to pass through the tension adjusting roller to change through a fixed guide roller.


    The working principle of the setting machine is as follows: The unshaped cloth is fed into the machine by the flat stripper, and the machine automatically attaches the two ends of the cloth to the needle board. Both ends of the needle board enter the oven with the mechanical running step, the oven is heated by electric, and the fan is blown. After several consecutive constant temperature ovens of different temperature sections, after entering the tail end and cooling to static electricity, the swing falls into the cloth, and the cloth is crisp and beautiful. Stretching is generally used for chemical fiber products such as polyester.


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