The screw-driven screw press is driven by the friction between the friction disc and the flywheel. The components and parameters that the friction press needs to control are as follows: (1) Control the left and right cylinders to move the slider up and down, and the electromagnet of the brake is released and clamped. (2) The control of energy is mainly to control the speed V of the slider, and the lifting height of the slider is directly related to the energy of the next striking. The higher the height, the greater the striking energy, so the lifting height is also a control to be controlled. parameter. The magnetic gantry displacement sensor is used to measure the displacement. The sensor is mainly composed of a fixed magnetic scale and a movable magnetic head. When used, the magnetic scale is fixed on the body, and the slider drives the magnetic head to move, and the measurement occurs by measuring the sensor. The number of pulses is used to measure the magnitude of the displacement. Since the signal sent by the sensor is small and the waveform is very irregular, it needs to be shaped and amplified before inputting into the single-chip microcomputer, and the software can be used to identify the upper and lower strokes. In order to meet the needs of energy measurement and control, the MCS-51 single-chip microcomputer was selected and expanded as follows. The RAM (data memory) is a 6116 chip with a capacity of 2K bytes for the storage and use of various valid data in the actual measurement and control process. -PROM (Erasable Program Memory) uses 2764 with a capacity of 8K bytes to store the program. The extension of the interface is 8155. In addition, we make full use of the existing interrupts of the microcontroller to achieve different levels of control. Hot Melt Adhesive For Pearl Cotton 1. Pearl cotton is divided into porous type and ordinary type. For the porous type, it is necessary to pay attention to the fact that there can be no drawing during the viscose process, so it is necessary to choose the pearl cotton hot melt adhesive particles that are not drawn.
5. The pearl cotton is bonded with other materials, such as honeycomb cardboard. At this time, it is necessary to consider whether it can stick to the two materials of pearl cotton and cardboard, and select the appropriate hot-melt glue particles according to the actual requirements.
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2. Pearl cotton is divided into white and colored. Generally, white pearl cotton is common, and colored pearl cotton requires transparent or consistent color hot melt adhesive particles for the color of hot melt adhesive.
3. Pearl cotton is divided into large and small pieces. The bonding process of large pieces of EPE takes a long time, and it is necessary to choose hot melt adhesive particles with a slower curing speed. The bonding process of small pieces of pearl cotton will be faster, and it is necessary to choose hot melt adhesive particles with fast curing speed.
4. There are different density in pearl cotton foam. The pearl cotton with a relatively high surface density needs to choose a more viscous pearl cotton rubber particle, because the pearl cotton with a high surface density is relatively less sticky.
