1. Threading cloth
Find a piece of strong cloth leader with sufficient length, and pass through the equipment correctly according to the regulations. When the leader passes through the steam box and drying equipment, special attention should be paid to safety to avoid burns. Pay attention to whether it is running to avoid scratches.
Second, the fabric
Wrap the cloth to be sanded with an A-shaped car, put it into the designated cloth feeding area according to the regulations, and center the cloth to the middle of the machine. Adjust the tension handwheel. Make the fabric tension moderate. And distinguish the front and back of the cloth, put the face to be sanded down, and flatten the front, back, left, and right sides of the cloth.
3. Adjust the machine tension
Adjust the movement equipment of the machine, pay attention to check the pressure of the air valve, pat the cloth with your hand to feel its tension, and adjust the tension to a moderate degree of tightness.
4. Adjust the depth of the pressing roller
The depth of the pressing roller determines how much the cloth is in contact with the sanding wheel, which directly affects the sanding effect.
(1) The shallower the cloth pressing roller, the smaller the contact surface of the cloth and the less sanding.
(2) The deeper the pressure roller, the larger the contact surface of the cloth and the more roughness.
5. Selection of sanding roller emery cloth
According to the quality samples of sanded products provided by customers, choose emery cloth for finishing. Common specifications (80, 120, 180, 240, 320, 400, 600)
(1) The finer the grain of the emery cloth, that is, the larger the number, the shorter and denser the hair will be.
(2) The coarser the grain of the emery cloth, that is, the smaller the number, the longer and sparser the hair will be.
(3) The sanding paper of the sanding wheel can be pasted with different abrasive cloths from the first branch to the whole machine’s sanding roller, from thick to fine.
Sixth, start the grinding operation
(1) Start the power supply
(2) Turn the cloth output wheel switch, washing tank switch, left and right wheel switch, cloth input wheel switch, and drying drum switch to the automatic position on the right.
(3) Open the distribution wheel to the automatic position on the right.
(4) Start the fan button to suck out the fluff that has been ground out along the air duct.
(5) Determine the running direction of NO1—all the grinding wheels, and adjust the switch.
(6) Start the movement button of the whole machine.
(7) Adjust the cloth guide wheel switch
(8) Adjust the rotation speed of the cloth guide wheel.
(9) Adjust the speed of the left and right wheels to synchronize with the main machine, and maintain a certain tension to ensure the quality of sanding.
(10) Adjust the button of the sanding contact surface to sand, and adjust according to the wool degree and quality requirements.
7. Check the quality of sanding
The length and density of sanding mainly depends on the requirements of customers. To meet this requirement, the main factors are as follows:
(1) The quality of the cloth
(2) Pre-treatment such as desizing, shaping, etc. are good or bad. All can affect the quality of sanding.
(3) The adjustment of the sanding machine itself is mainly a few factors, such as the cloth guide speed, the selection and arrangement of the emery cloth, the tightness of the cloth tension, and the adjustment of the depth of the pressing roller.
8. Shift handover and shutdown
1. Abnormalities during processing should be recorded in detail in the handover record for tracking and improvement
2. Clean up the environment and return the distribution vehicles.
3. Stop the machine and drain all the water in the washing tank, turn off the water valve, steam valve and power switch.
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Post time: Apr-24-2023
