Views: 16 Author: DURMAPRESS Publish Time: 2021-08-13 Origin: DURMAPRESS Inquire
3. The Use,Performance and Characteristics of the Machine Hydraulic QC12K-6X3200 Shearing Machine
The machine is mainly used for cutting normal steel plate of 0.5-6mm thickness and 3200
mm width.
The standard tensile strength of the plate is less than or equal to 450/Nm㎡. When you need
to cut plates of higher tensile strength, you should reduce the thickness of the plate
correspondingly.
The machine adopts steel welded structure, hydraulic transmission and nitrogen return
with steady and reliable operation.
It is rapid and convenient to adjust the clearance of the blade. The machine has prebagauge
and backgauge. The backgauge adopts mechanical transimission with the value displayed by
the counter. The pregauge adopts staff counting, block positioning and lighting alignment
which is convenient for cutting. The stroke of upper blade can be arbitrarily adjusted to im-
prove the efficiency while cutting narrow plates. The machine is also equipped with
protection fence which guarantees the operator’s safety. (if you want to equip aeriform
back supporting device, you need to order specially)
4. Hydraulic-transmisson System QC12K-6X3200 Shearing Machine
The machine's hydraulic system is mainly composed of meshing gear pump NT3-G20F, combination valve, overflow valve and electromagnetic reversing valve etc.
The pressure oil that the system need is supplied by meshing gear pump NT3-G20F. The
max working pressure of the system is about 16mpa. The return of upper blade is achieved
by cylinder of nitrogen return whose pessure is7mpa—6 mpa.
The working principle of hydraulic system(refer to figure 1).When the oil pump starts working,
the oil output by it enters into combination valves of each working cylinder(primary cylinder
and plate pressing cylinder) via pipes. Then the oil divides into primary oil path and controlling
oil path.The pressure oil in controlling oil path returns to oil tank via the orifice of throttle with
-out creating any pressure. Due to the function of the orifice of the throttle, certain
differential pressure generates at the pre and back parts of the throttle which makes the pressure
of oil inlet of conical valve higher than controlling level.
After overcoming the tension of spring , the oil opens the conical valve 4B and enters into oil
tank via the orifice of oil return. At that moment the machine creates no actions or pressure.
When the electromagnetic reversing valve is in the power, hydraulic oil of the controlling oil
path enters into overflow valve 9 via it . Because the overflow valve is closed under the
reset pressure value, so the pressure of oil path grows gradually and the pressure of both sides
of conical valve 4B become equivalent finally. However, due to area difference of the spool
and tension of spring force, the overflow valve closes. During the process of the gradual in
-crease of the pressure of oil path, firstly the cylinder for pressing plate(16) overcomes the
tension of spring and presses downwards. Then after the primary oil path overcoming support
-ing force of return stroke, the upper blade bracket runs downdards. At that moment the
cylinder of pressing plate and upper blade bracket achieve serial actions: the upper blade
bracket runs to its lower limited position, the ram makes electromagnetic reversing valve
power off and return to its former position and the whole oil path uploads. The upper
blade bracket returns under the effect of nitrogen return cylinder and the pressure oil returns
to its former position under the effect of the tension of spring .
5 The Structure Of The Machine
1 The machine
The machine adopts the configuration welded with steel plate which has excellent rigidity.
The two cylinders are correspondingly fixed on the right and left upright columns. Assisted
blade bracket is installed on the workbench which makes it convenient to adjust the lower
blade slightly. The workbench is also equippd with the ball of transporting the plate which
is convenient to operate.
2 The upper slide rest
The upper slide rest adopts the configuration welded with steel plate which has excellent rigidity.
It makes the bearing that is away from the center as its fulcrum and accomplishes the cutting
by swinging repeatedly under the drive of right and left cylinders and nitrogen return cylinder.
The vertical supporting plane of upper slide rest made into arc-line curve which
guarantees the consistence of the clearances of the upper and the lower blade during the process
of cutting.
3 Device of plate pressing
The device is composed of many plate pressing cylinders installed at former part of
5 The Structure Of The Machine
1 The machine
The machine adopts the configuration welded with steel plate which has excellent rigidity.
The two cylinders are correspondingly fixed on the right and left upright columns. Assisted
blade bracket is installed on the workbench which makes it convenient to adjust the lower
blade slightly. The workbench is also equippd with the ball of transporting the plate which
is convenient to operate.
2 The upper slide rest
The upper slide rest adopts the configuration welded with steel plate which has excellent rigidity.
It makes the bearing that is away from the center as its fulcrum and accomplishes the cutting
by swinging repeatedly under the drive of right and left cylinders and nitrogen return cylinder.
The vertical supporting plane of upper slide rest made into arc-line curve which
guarantees the consistence of the clearances of the upper and the lower blade during the process
of cutting.
3 Device of plate pressing
The device is composed of many plate pressing cylinders installed at former part of