1. The structure of the equipment The machine belongs to the
hydraulic three-roller plate bending machine, which is used to roll
the steel plate into a cylindrical, circular arc
androundingfunction; The upper roller can bemovedvertically; The
pre-bending is achieved by the horizontal movement of the lower
roller, and the lower roller is in an asymmetricalpositionrelative
tothe upper roller; When rounding andcalibrating, the
workingrolleris driven to provide the coiling torque for the coiled
sheet; The elevation of the lower roller remains unchanged, which
is convenient for feeding and operation;The three rolls are active
rolls, the lift of the upper roll and the horizontal movement of
the lower roll are driven by hydraulic pressure, the main cylinder
is set down, synchronization is controlled by computer,
synchronization accuracy is ±0.15mm. The equipment is compact in
structure, small in size and high in precision. It is especially
used in cold and hot coiling machine.2.Main technical
parametersNOName Unit Parameters 1Three roll plate bending machine
type/Variable center distance lowerrollerleveladjustable2Rolled
sheets yield to the limitMPa≤2453Maximum coil thicknessmm404Maximum
pre-bent plate thicknessmm455Minimum roll diameter at full
loadmmF20 006Maximum bin widthmm32007Remaining straight edge
thicknessmm≤2.5times the thickness of the plate8Roll
speedm/min49Upper roll diametermmF46010Lower roll
diametermmΦ40011Two lower rollercenter distancesmm480-68012Work
rollermaterial/42CrMo (temperedHB260-300).13The way the working
rollermoves/Hydraulic cylinderdriven14Hydraulic system
pressureMPa2015Hydraulic motor torqueKN.m1216Total installed
powerKW5017Hydraulic cooling system/Oil cooler18Roller drive
method/Hydraulic motor +planetary gear reducer19Lubrication
system/It adopts automatic lubrication at start-up and timed forced
lubrication20operating system/Two sets of operation systems: remote
control and movable operating platformsystem, but mutually secure
interlocking, only one system can be used at a time. Touchscreen
movable operator station. 21Control mode/Manual (wireless) +
electronically controlledMain structur NOName1)Front
frame2)Rear frame3)chassis4)Roll on5)Coupling6)Planetary reduction
gears7)Hydraulic motor8)Lower roller9)The upper roller moves the
drag plate10)The lower roller moves the cylinder11)Front opening
unit12)Reverse and support systems13)Hydraulics and systems14)Power
supply unit15)Control cabinet16)Protection and security
equipmentThe main structural components of the bending machine are
as follows:1) Mechanical structure2) Upper rollerdevice3) Lower
rollerdevice4)Overturningdevice5) Option attachments6) Hydraulic
system7) Lubrication system8) Electrical system9) Safety device3-1.
Upper roller device 1) Upper roller 2) Hydraulic motor 3)
Reduction gear 4) Overturn bearing seat 5) Fixed bearing housing
6)Main oil Cylinder 7)Skateboard(Illustration of upper roller
device).The upper roller device is mainly composed of upper roller,
main oil cylinder, upper roller bearing seat, double row spherical
rolling bearing, etc.The material of the upper working roller is
42CrMo, which has high strength and toughness, and is heat
treatedHB260~300. The upper roller is preset with a drum shape with
50%uniform load, which improves the rigidity of the upper roller
and greatly improves the straightness of the product. Two master
cylinders provide the pressing force required to coil the plate,
the cylinder block is 45 and the piston is 45steel forgings, the
tempering treatment is HB215-255,and the main cylinder isYxseal.
Double row spherical bearings are selected for low-speed,
heavy-duty bearings.The lifting and lowering synchronization of the
upper roller is controlled by PLC, and the synchronization accuracy
is ±0Within 20mm. Both ends of the upper roller can be raised and
lowered independently in order to realize the coiling of the cone.
The main transmission device is composed of hydraulic
motor+planetary reducer, whichdirectly drives the upper roller. The
main drive can be reversed forward and reverse to power the coiling
of the plates.A hydraulic motor that converts pressurized fluid
energy into mechanical energy and then to the shaft via
planetaryreduction gears.
1)Hydraulic motor 2)
cycloid reduction gear 3) coupling 4) stop
gear 3-2.Lower roller and horizontalmoving device1) Lower
roller 2) side hydraulic cylinder 3) bearing housing
4) slide plate 5) guide rail 7) horizontal
guide 8)Anti-collision travellimitblock 9)Position
sensor(Illustration of lower roller device).The lower roller device
is composed of lower roller, lower roller bearing seat, double row
spherical rolling bearing, etc. The material of the lower working
roller is 42CrMo, which has high strength and toughness, and is
heat treatedHB260~290. Double row spherical bearings are selected
for low-speed, heavy-duty bearings.The horizontal movement of the
lower roller is driven by the cylinde
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