Processing method of herringbone rubber rubbed roll for lawn mower
Mowing and flattening machine is a kind of forage harvesting machine which completes the cutting, flattening and laying of grass in one time. According to the literature, flattening roller device is the core component of the mowing and flattening machine. Because the rubber flattening roller with herringbone tooth structure can not only soften and flatten the grass, but also have the function of foraging grass into it, thus improving the quality of grass products. It is widely used at home and abroad.
But at present, there are some problems in the production of rubber flattening roll with herringbone teeth in our country, such as obsolete processing equipment, complex processing technology and low processing accuracy, which lead to low reliability of roll device of flattening machine, poor assembly between parts and components, and increase production cost. Reliable herringbone rubber roller is of great significance.
After finishing the polishing roll of flattening roll, glue coating should be carried out. The main types of roll glue coating are: casting glue, cold glue, tile-shell glue coating, ceramic glue coating, etc. In this test, casting glue is used. The contact surface between roll glue surface and roll surface is large, there is no gap, and the glue coating is firm and reliable. Rubber selection of rubber roll has wear resistance. Polyurethane rubber material with high elasticity, resistance to cracking and other characteristics and low price. In order to ensure the large contact surface between rubber roller rubber surface and roller, no gap, solid and reliable coating, the rubber roller casting process needs to undergo the following processes:
(1) Cleaning rubber roller: If it is a new roller, it is necessary to clean the oil contamination on the outer surface of the roller with detergent; if it is an old rubber roller, it is necessary to remove the rubber coating on the outer surface of the old rubber roller, and clean the remaining rubber on the surface of the roller with detergent; (2) Rough surface of the rubber roller. Reasons: Roughening the surface of the roller to increase the bonding area between the outer surface of the roller and the glue coating; (3) Sandblasting: Sandblasting the rough roller to make the surface of the roller more rough and glue and glue to the roller better;
(4) gluing: gluing the rollers after the above treatment according to the design requirements; (5) rubber roll vulcanization: rubber rollers after gluing generally need 10-15 hours of vulcanization time, after vulcanization rubber rollers and gluing will be closely bonded, a gluing rubber roll formed; (6) rubber roll polishing: press: The required dimensions and shapes are polished to ensure that the cylindricity error of the outer circle of the blanking roll is not more than 0.1 mm, and that the coaxiality error and radial circle runout error of the outer circle of the blanking roll relative to the left and right axes of the blanking roll are not more than 0.15 mm.