4 Rolls Cylinder Boring Machine 11 8*2000 Building Materials Section Roller

Product DescriptionW12-6×1500 type four roll plate bending machine is sheet metal bending, correction machinery. Special for sheet metal forming bending work. The pre-bending and crimping of various types of cylinder and arc workpiece can be completed after a feeding. With the help of auxiliary devices, the conical cylinder can be rolled. Rough shaping work can also be done on the sheet metal.SpecificationsNo.ItemUnitFigure1Machine typemm6×15002Steel plate bending forceMPa2353Steel plate max widthmm15004Steel plate max pre bending thicknessmm55Steel plate max thicknessmm66Upper roller diametermm1707Bottom roller diametermm1608Side roller diametermm1409Rolling speedm/min410Minimum rolling diametermm25011Bending angle ≥75°12Hydraulic system working pressureMPa1613Motor powerKw4Overview of the main structure of the product1. Structure overview1. The upper roller is an active roller, the lower roller and the side roller are driven rollers, the upper roller position is fixed, the lower roller and the side roller can be lifted and moved, the upper roller is a mechanical transmission, the rotation of the lower roller and the side roller is driven by the friction between the steel plate and the rollers. The lower roller and the side roller are driven by the two ends of the oil cylinder to realize the lifting movement. The overturning and resetting of the front bearing body of the upper roll is carried out by the overturning oil cylinder, and each roller bearing body and oil cylinder are installed in the left and right ends of the frame. The left and right frame is the main body of the four-roll plate rolling machine. It adopts welding structure and is installed on the whole base. All operation of the machine is carried out on the operating platform.Compared with the symmetrical three-roll plate coiler, the four-roll plate coiler can directly prebend the end of the plate without the aid of other equipment mold, and the remaining straight edge is smaller; Compared with the asymmetric three-roll plate coiling machine, it can not reverse the plate, and roll into the workpiece. This not only improves the efficiency, to ensure the quality of the workpiece, and the process is simple, easy to operate, reduce the labor intensity of workers.2. Main transmission mechanismThe upper roll of the four-roll rolling machine is the main driving roll, which rotates at a linear speed of about 5 meters per minute. The hydraulic motor drives the gear reducer installed on the upper roll to drive the upper roll to rotate.3. Auxiliary transmission mechanismThe auxiliary drive of this machine is: the lifting of the lower roller and the two sides of the roller, the toppling and resetting, all adopt hydraulic drive, the lower roller and the two sides of the roller can be lifted at the same time, can also be lifted separately.Note: The maximum height difference between the two sides of the side roller shall not exceed 20mm.4. Rolling processThere are many kinds of rolling process, users can decide according to their own process, the following provides a reference (see Figure 3).a Operate the lower roller to rise so that its bus bar is slightly greater than the working thickness of the lower roller, then operate the side roller on the feeding side to make its upper bus bar on the same level, and then operate the other side to rise between the upper and lower rollers.b Feed: Feed the steel plate horizontally, make the end of the steel plate contact with the front roller to align, and then lower the front roller to the original position.c Clamp the steel plate and prebend the end: according to the thickness and material of the steel plate, adjust the pressure of the lower roller loop to a certain value within the range of 5-10Mpa, operate the lower roller to rise and clamp the steel plate, and start the upper roller to rotate. When the steel plate moves to the bending position, the upper roll stops rotating. At this time, the left end of the center line of the upper and lower roller should be left with the necessary clamping length equal to 1.5 times the thickness of the plate. Then raise the back side roller and prebend the end of the steel plate.d Prebend the other end of the steel plate with the front roll. After the left end is prebent, lower the back roll to the original position and start the upper roll. When the steel plate moves to the above bending position, the upper roll stops rotating. Operate the front roller to rise the other end of the pre-bent steel plate, and adjust the pressure of the roller loop on both sides at about 16-19.5Mpa.e Preliminary bending: Adjust the front and rear side rolls to the corresponding positions required by the work, and start the upper roll for the final forming bending.f forming bending: Adjust the front and rear side rolls to the corresponding positions required by the work, and start the upper roll for the final forming bending.g Take out the workpiece: after bending, lower the lower roll to the lowes