CN117754034B - Metal plate rolling shearing machine driven by hydraulic cylinder in vertical installation mode - Google Patents
Metal plate rolling shearing machine driven by hydraulic cylinder in vertical installation mode Download PDFInfo
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- 238000010008 shearing Methods 0.000 title claims abstract description 123
- 238000005096 rolling process Methods 0.000 title claims abstract description 32
- 238000009434 installation Methods 0.000 title claims abstract description 18
- 239000002184 metal Substances 0.000 title claims abstract description 16
- 230000001360 synchronised effect Effects 0.000 claims abstract description 22
- 238000005452 bending Methods 0.000 claims abstract description 16
- 230000007704 transition Effects 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 184
- 239000012530 fluid Substances 0.000 claims description 28
- 238000003825 pressing Methods 0.000 claims description 25
- 239000010720 hydraulic oil Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 238000004146 energy storage Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000005056 compaction Methods 0.000 claims description 4
- 238000007373 indentation Methods 0.000 claims description 3
- 230000010349 pulsation Effects 0.000 claims description 2
- 230000002457 bidirectional effect Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of metal plate shearing equipment, and particularly relates to a metal plate rolling shearing machine with a hydraulic cylinder vertically installed and driven, which mainly comprises a shearing assembly and a shearing hydraulic system, wherein the shearing assembly comprises a frame, an upper cross beam is arranged at the upper end of the frame, a shearing hydraulic cylinder is vertically installed at one side of the frame, the upper end of a piston rod of the shearing hydraulic cylinder is hinged with one end of an arc-shaped connecting rod, the arc transition bending part of the arc-shaped connecting rod is hinged with the upper cross beam, the other end of the arc-shaped connecting rod is hinged with one end of a synchronous connecting rod and the upper end of a first connecting rod through a pin shaft, the other end of the synchronous connecting rod is hinged with the lower end of the upper connecting rod and the upper end of a second connecting rod through a pin shaft, the lower ends of the first connecting rod and the second connecting rod are respectively hinged with an upper cutter seat through pin shafts, and the problem of unbalanced load existing horizontal hinging installation of the shearing hydraulic cylinder is vertically installed.
Description
Technical Field
The invention belongs to the technical field of metal plate shearing equipment, and particularly relates to a metal plate rolling shearing machine driven by a hydraulic cylinder in a vertical installation mode.
Background
The rolling type metal plate shearing machine used at home and abroad at present can be divided into a mechanical type and a hydraulic type. The mechanical rolling type metal plate shearing machine has the advantages that the structure is complex, the system is huge, the length of a connecting rod, the radius of a crank and the phase angle are reversely solved and optimized according to key position points of a rolling shearing track of an arc-shaped tool rest, rolling shearing is realized, a shearing transmission mechanism is a motor, a speed reducer, a crankshaft, the connecting rod and the arc-shaped tool rest, the problems that the transmission system is complex in structure, high in machining and assembling precision requirements, high in equipment manufacturing cost, high in use and maintenance cost and the like exist, meanwhile, due to the fact that the width and the thickness of a shearing steel plate are increased, the eccentric radius of the crankshaft is greatly increased, shearing additional moment and motor power can be greatly increased, the deviation of rolling shearing precision is caused, the shearing quality of the steel plate is seriously influenced, and a common steel plate shearing deep processing enterprise abandons purchasing the equipment.
The hydraulic rolling type metal plate shearing machine adopts a structural form that a hydraulic cylinder drives a composite link mechanism to realize rolling shearing of an upper shearing blade. The structural feature of the patent number ZL200610102208.X is that two horizontally arranged hydraulic cylinders drive a composite link mechanism to realize rolling shearing of an upper shearing blade, and the device has the advantages of simple structure, good steel plate shearing quality and the like, but the two horizontally arranged hydraulic cylinders need to be controlled by a servo system, so that the requirements on the software and hardware levels of the system are very high, and the manufacturing cost of the device and the maintenance cost of later debugging production are increased. The patent number ZL201410665481.8 is characterized in that a horizontal hydraulic cylinder is adopted to drive a synchronous connecting rod to move, so that the upper beam connecting rod and the upper cutter table connecting rod on the left side and the right side of the integral frame move simultaneously, and the structural form of rolling shearing is realized under the constraint of a guide rod. The hydraulic cylinder only needs to be controlled to walk in the limit position in the shearing process, and servo control is not needed, so that the whole shearing machine is simple in structure, low in configuration requirements of a hydraulic system and a control system and convenient to maintain. However, in the use process, problems exist, such as that a single horizontal type arrangement hydraulic cylinder needs to be hinged and matched with three connecting rods of the upper beam connecting rod, the upper cutter table connecting rod and the synchronous connecting rod, the requirement on the dimensional precision of the connecting rods is very high, meanwhile, the requirement on the arrangement position precision of the mechanism is high, and the factors tend to increase the design difficulty and the maintenance cost of later debugging production. The two hydraulic rolling type metal plate shearing machines are in a mode that a hydraulic cylinder and a frame are horizontally hinged, and the hydraulic cylinder swings slightly in the rolling shearing process. Because the influence of knife rest dead weight can produce the unbalance loading force at the pneumatic cylinder in-process that stretches out and withdraws for there is the partial friction between piston rod and uide bushing, piston and the cylinder, and long-time action can lead to the fish tail of pneumatic cylinder inner wall, damages the sealing washer to cause and lets out, influences the output characteristic and the life of pneumatic cylinder.
Disclosure of Invention
The invention provides a metal plate rolling shearing machine driven by a hydraulic cylinder in a vertical installation way, aiming at the unbalanced load problem of the horizontal hinged installation of the hydraulic cylinder in the conventional hydraulic rolling metal plate shearing machine.
The invention adopts the following technical scheme to achieve the aim:
The utility model provides a metal sheet rolling shear of pneumatic cylinder vertical installation drive, mainly includes shearing subassembly and shearing hydraulic system, shearing subassembly includes the frame the upper end of frame is provided with the entablature the vertical installation of one side of frame cuts the pneumatic cylinder, the lower extreme of cutting the pneumatic cylinder articulates with the frame through the round pin axle, the upper end of cutting the pneumatic cylinder piston rod articulates with the one end of arc connecting rod, the arc transition bending department of arc connecting rod articulates with the entablature, the other end of arc connecting rod articulates with the one end of synchronizing rod and the upper end of first connecting rod through the round pin axle, the other end of synchronizing rod articulates with the lower extreme of upper connecting rod and the upper end of second connecting rod through the round pin axle, the upper end of upper connecting rod articulates with the entablature through the round pin axle respectively, the part that the arc connecting rod was bent downwards is arranged with the upper connecting rod parallel arrangement, one side of upper blade holder articulates with the guide bar, the other end of guide bar articulates with the guide bar and guide bar, the guide bar articulates with the lower blade of guide bar, the cutting edge is installed on the upper and lower blade is fixed on the frame, the cutting edge is installed on the upper and lower side of the platform;
the shearing hydraulic system is used for controlling the shearing hydraulic cylinder to work;
In the rolling shearing process, the vertically installed shearing hydraulic cylinder drives the arc-shaped connecting rod to act, the arc-shaped connecting rod drives the first connecting rod and the synchronous connecting rod to act, and power is transmitted to the upper connecting rod and the second connecting rod through the synchronous connecting rod, so that synchronous movement of the arc-shaped connecting rod, the upper connecting rod, the first connecting rod and the second connecting rod is realized, and the upper cutter holder is driven to do rolling shearing.
Further, the device also comprises a compressing component, a clamping hydraulic system and a compressing hydraulic system which are arranged at the inlet side of the frame; the pressing assembly comprises a fixed seat fixedly connected with the frame, at least three pressing hydraulic cylinders are vertically arranged in the fixed seat, the lower ends of the pressing hydraulic cylinders are connected with a pressing plate, and the pressing plate is positioned below the fixed seat; the clamping assembly comprises two connecting seats arranged on the outer side of the fixed seat, a clamping hydraulic cylinder is hinged to the connecting seats, the other end of the clamping hydraulic cylinder is hinged to one end of a mounting seat, the other end of the mounting seat is hinged to the fixed seat, an upper pinch roll is arranged on the mounting seat, a lower pinch roll is arranged below the upper pinch roll, the lower pinch roll is rotatably arranged on the lower part of the frame, and one end of the lower pinch roll is connected with an output shaft of a stepping motor through a coupler;
The clamping hydraulic system is used for controlling the clamping hydraulic cylinder to work, and the compacting hydraulic system is used for controlling the compacting hydraulic cylinder to work;
Before rolling shearing starts, the stepping motor drives the lower pinch roll to rotate, meanwhile, the clamping hydraulic cylinder drives the upper pinch roll to move downwards, the upper pinch roll and the lower pinch roll clamp the plate to be sheared together and convey the plate to the target position forwards, the stepping motor stops working, and the pressing hydraulic cylinder in the fixing seat extends downwards and drives the pressing plate to press the plate to be sheared on the shearing platform.
Still further, the included angle gamma between the horizontal part and the bending part of the arc-shaped connecting rod is 110-140 degrees; the included angle alpha between the upper connecting rod and the vertical line is-30 degrees; the included angle between the first connecting rod and the vertical line is beta, and the included angle between the second connecting rod and the vertical line is beta 1,β=β1 -25 degrees; the included angle phi between the guide rod and the horizontal line is 5-10 degrees.
Still further, the distance H between the hinge point of arc connecting rod and entablature to the hinge point of upper connecting rod and entablature is 1000mm ~ 450mm, the length A of arc connecting rod horizontal part is 400mm ~ 1100 mm, and the length B of bending part is 200mm ~2000mm, the length of first connecting rod is the same with the second connecting rod, and M is 200mm ~2000mm, the length N of upper connecting rod is 200mm ~2000mm.
Still further, the shearing hydraulic system comprises a first pressure reducing valve, an oil port B of the first pressure reducing valve is connected to the high-pressure oil pipe, an oil port A of the first pressure reducing valve is connected with an oil port B of the first hydraulic control one-way valve, an oil port A of the first hydraulic control one-way valve is connected with an oil port P of the proportional valve with differential pressure compensation, an oil port A of the proportional valve with differential pressure compensation is connected with an oil port B of the second hydraulic control one-way valve, an oil port B of the proportional valve with differential pressure compensation is connected with an oil port B of the third hydraulic control one-way valve, an oil port T of the proportional valve with differential pressure compensation is connected with an oil port A of the one-way valve, an oil port B of the one-way valve is connected with an oil return pipe, an oil port A of the second hydraulic control one-way valve is connected with an oil port B of the shearing hydraulic cylinder, an oil port A of the third hydraulic control one-way valve is connected with an oil port A of the shearing hydraulic cylinder, the oil ports X of the first hydraulic control one-way valve, the second hydraulic control one-way valve and the third hydraulic control one-way valve are all connected with the oil port A of the second ball valve, the oil port P of the second ball valve is connected with a control oil pipe, the oil port T of the second ball valve is connected with an oil return pipe, the oil port B of the shearing hydraulic cylinder is also connected with the oil port P of the first ball valve, the oil port A of the first ball valve is communicated with the oil port A of the first energy accumulator group, the hydraulic oil pump is characterized in that a second pressure sensor is arranged at an oil port A of the first energy accumulator group, an oil port T of the first energy accumulator group is connected with an oil tank, a first pressure sensor is arranged at the oil port A of the shearing hydraulic cylinder, the oil port A of the shearing hydraulic cylinder is also connected with an oil port B of a supercharger, the oil port A of the supercharger is connected with an oil port A of a one-way sequence valve, the oil port B of the one-way sequence valve is connected with an oil port B of a proportional valve with differential pressure compensation, and the hydraulic oil pump is provided with a first pressure reducing valve, the hydraulic oil ports Y of the first hydraulic control one-way valve, the second hydraulic control one-way valve, the third hydraulic control one-way valve and the one-way sequence valve are all connected with an oil unloading pipe, and a built-in displacement sensor is arranged in a piston rod of the shearing hydraulic cylinder.
Still further, the hydraulic system that presss from both sides send includes the second relief pressure valve, the hydraulic fluid port B of second relief pressure valve is connected with high-pressure oil pipe, the hydraulic fluid port Y of second relief pressure valve is connected with unloading oil pipe, the hydraulic fluid port A of second relief pressure valve is connected with the hydraulic fluid port P of first electromagnetic directional valve, the hydraulic fluid port A of first electromagnetic directional valve is connected with the hydraulic fluid port A of fourth pilot operated check valve, the hydraulic fluid port B of fourth pilot operated check valve is connected with the hydraulic fluid port B that presss from both sides send the pneumatic cylinder, the hydraulic fluid port B of first electromagnetic directional valve is connected with the hydraulic fluid port A that presss from both sides send the pneumatic cylinder, the hydraulic fluid port X of fourth pilot operated check valve is connected with the hydraulic fluid port A of third ball valve, the hydraulic fluid port P of third ball valve is connected with high-pressure oil pipe, the hydraulic fluid port T of third ball valve is connected with the oil return pipe.
Still further, the hydraulic fluid port B who presss from both sides and send the pneumatic cylinder still is connected with the hydraulic fluid port P of electromagnetic relief valve, the hydraulic fluid port T of electromagnetic relief valve links to each other with the hydraulic fluid port T of first electromagnetic reversing valve and returns the oil return pipe, electromagnetic relief valve is used for urgent unloading as the relief valve, the hydraulic fluid port B who presss from both sides and send the pneumatic cylinder still is connected with the hydraulic fluid port P of second energy storage group, the hydraulic fluid port T of second energy storage group is connected with the oil return pipe, the second energy storage group is used for absorbing the pulsation impact of hydraulic pipeline and accelerates the return speed that presss from both sides and send the pneumatic cylinder, improves work efficiency.
Furthermore, a third pressure sensor is further installed at the oil port A of the clamping hydraulic cylinder and used for monitoring the working pressure of the clamping hydraulic cylinder in real time.
Furthermore, the compaction hydraulic system comprises a valve group formed by overlapping and installing a stacked pressure reducing valve, a second electromagnetic reversing valve, a hydraulic lock and a two-way throttle speed regulating valve, and the valve group formed by overlapping and installing is respectively connected with an oil port A and an oil port B of the compaction hydraulic cylinder.
Furthermore, the oil port A of the compressing hydraulic cylinder is also connected with the oil port P of the direct-acting overflow valve, the oil port T of the direct-acting overflow valve is connected with an oil return pipe, a fourth pressure sensor is arranged at the oil port A of the compressing hydraulic cylinder and used for monitoring the working pressure of the compressing hydraulic cylinder in real time, preventing the compressing force from being too high to leave an indentation on the surface of the plate, and unloading through the direct-acting overflow valve after the compressing force exceeds a pressure target set value.
Compared with the prior art, the invention has the following advantages:
The vertical installation of the shearing hydraulic cylinder solves the problem of unbalanced load existing in the horizontal hinged installation of the traditional shearing hydraulic cylinder, reduces unbalanced load force born by a piston rod, prolongs the service life of the shearing hydraulic cylinder, and has the characteristics of simple structure, strong practicability and easiness in implementation;
In the whole shearing process of the mechanism, the arc transition bending part of the arc connecting rod is hinged with the upper cross beam to be equivalent to a fulcrum, an obvious lever boosting effect can be achieved between the horizontal part of the arc connecting rod and the connecting rod mechanism, the stable output of the shearing force is ensured through the use of a booster in a shearing hydraulic system and the double boosting effect of mechanical lever 'mechanical and hydraulic', the shearing force of 1300T can be realized by the output force of a 500T shearing hydraulic cylinder, and the cooperative control of an energy accumulator group and the booster is realized, so that the shearing speed and the working efficiency are improved;
According to the invention, the shearing hydraulic cylinder which is vertically arranged and installed is adopted to drive the synchronous connecting rod to move, so that the upper connecting rod, the first connecting rod and the second connecting rod move simultaneously, rolling shearing is performed under the constraint of the guide rod, the whole shearing machine is simple in structure, the configuration requirement of the shearing hydraulic system is low, and the maintenance is convenient.
Drawings
FIG. 1 is a schematic view of a shear assembly according to the present invention;
FIG. 2 is a transmission block diagram of the shear assembly of the present invention;
FIG. 3 is a side view of the shear assembly of the present invention;
FIG. 4 is a front view of the compression assembly and pinch assembly of the present invention;
FIG. 5 is a schematic view of the structure of the compressing assembly and the pinching assembly of the present invention;
FIG. 6 is a schematic view of the structure of the compression assembly and pinch assembly of the present invention;
FIG. 7 is a schematic diagram of a shear hydraulic system of the present invention;
FIG. 8 is a schematic diagram of a pinch hydraulic system of the present invention;
FIG. 9 is a schematic diagram of a hold-down hydraulic system of the present invention;
In the figure, a frame 1, an upper cross beam 2, a shearing hydraulic cylinder 3, an arc-shaped connecting rod 4, a synchronous connecting rod 5, a first connecting rod 6, an upper connecting rod 7, a second connecting rod 8, an upper tool apron 9, a guide rod 10, a guide rod support 11, a first pressure reducing valve 12, a first hydraulic check valve 13, a proportional valve with differential pressure compensation 14, a second hydraulic check valve 15, a third hydraulic check valve 16, a first ball valve 17, a first accumulator group 18, a booster 19, a check sequence valve 20, a built-in displacement sensor 21, a second ball valve 22, a control oil pipe 23, a high-pressure oil pipe 24, an oil return pipe 25, an oil discharge pipe 26, a second pressure sensor 27, a check valve 28, a first pressure sensor 29, a fixed seat 30, a pressing hydraulic cylinder 31, a pressing plate 32, a connecting seat 33, a clamping hydraulic cylinder 34, an installation seat 35, an upper pinch roll 36, a lower pinch roll 37, a stepping motor 38, a second pressure reducing valve 39, a first electromagnetic directional valve 40, a fourth hydraulic check valve 41, a third ball valve 42, an electromagnetic relief valve 43, a second accumulator group 44, a third pressure accumulator group 45, a third pressure relief valve 46, a superimposed valve 46, a fourth hydraulic relief valve 48, a differential pressure regulating valve 52, a forward-pressure sensor, a forward pressure regulating valve 52, a knife edge valve 52, a two-way electromagnetic relief valve 52, a two-way valve 52, a shear valve 52.
Detailed Description
In order to further illustrate the technical scheme of the invention, the invention is further illustrated by the following examples.
Example 1
As shown in fig. 1 to 9, a metal plate rolling shearing machine with a hydraulic cylinder vertically installed and driven mainly comprises a shearing assembly, a shearing hydraulic system, a compressing assembly, a clamping hydraulic system and a compressing hydraulic system, wherein the shearing assembly comprises a frame 1, an upper cross beam 2 is arranged at the upper end of the frame 1, the shearing hydraulic cylinder 3 is vertically installed at one side of the frame 1, the lower end of the shearing hydraulic cylinder 3 is hinged with the frame 1 through a pin shaft, the upper end of a piston rod of the shearing hydraulic cylinder 3 is hinged with one end of an arc-shaped connecting rod 4, the arc-shaped transitional bending part of the arc-shaped connecting rod 4 is hinged with the upper cross beam 2, the other end of the arc-shaped connecting rod 4 is hinged with one end of a synchronous connecting rod 5 and the upper end of a first connecting rod 6 through a pin shaft, the other end of the synchronous connecting rod 5 is hinged with the lower end of the upper connecting rod 7 and the upper end of a second connecting rod 8 through a pin shaft, the upper ends of the upper connecting rod 7 are hinged with the upper cross beam 2 through pin shafts, the lower ends of the first connecting rod 6 and the second connecting rod 8 are respectively hinged with an upper cutter seat 9 through pin shafts, the lower ends of the first connecting rod 6 and the second connecting rod 8 are respectively hinged with the upper cutter seat 9, the lower cutter seat 4 is fixedly arranged on one side of the upper cutter seat 10 and the upper cutter seat 4 is parallel to the upper cutter seat 10 and the upper cutter seat 11 is fixedly arranged on the upper cutter seat 11.
The included angle gamma between the horizontal part and the bending part of the arc-shaped connecting rod 4 is 110 degrees; the included angle alpha between the upper connecting rod 7 and the vertical line is-30 degrees; the included angle between the first connecting rod 6 and the vertical line is beta, and the included angle between the second connecting rod 8 and the vertical line is beta 1,β=β1 degrees to be-25 degrees; the included angle phi between the guide rod 10 and the horizontal line is 5 degrees; the distance H between the hinge point of the arc connecting rod 4 and the upper cross beam 2 and the hinge point of the upper connecting rod 7 and the upper cross beam 2 is 1000mm, the length A of the horizontal part of the arc connecting rod 4 is 400mm, the length B of the bending part is 200mm, the lengths of the first connecting rod 6 and the second connecting rod 8 are the same, the lengths are M, and the M is: 200mm, length N of upper connecting rod 7 is: 200mm.
The compressing component and the clamping component are arranged on the inlet side of the frame 1; the pressing assembly comprises a fixed seat 30 fixedly connected with the frame 1, at least three pressing hydraulic cylinders 31 are vertically arranged in the fixed seat 30, the lower ends of the pressing hydraulic cylinders 31 are connected with a pressing plate 32, and the pressing plate 32 is positioned below the fixed seat 30; the pinch assembly comprises two connecting seats 33 arranged on the outer side of a fixed seat 30, a pinch hydraulic cylinder 34 is hinged to the connecting seats 33, the other end of the pinch hydraulic cylinder 34 is hinged to one end of an installation seat 35, the other end of the installation seat 35 is hinged to the fixed seat 30, an upper pinch roll 36 is installed on the installation seat 35, a lower pinch roll 37 is arranged below the upper pinch roll 36, the lower pinch roll 37 is rotatably installed on the lower portion of a frame 1, and one end of the lower pinch roll 37 is connected with an output shaft of a stepping motor 38 through a coupler.
Before rolling shearing starts, the stepping motor 38 drives the lower pinch roll 37 to rotate, meanwhile, the clamping hydraulic cylinder 34 drives the upper pinch roll 36 to move downwards, the upper pinch roll 36 and the lower pinch roll 37 clamp and convey the plate to be sheared to a target position together, the stepping motor 38 stops working, and the pressing hydraulic cylinder 31 in the fixing seat 30 stretches downwards and drives the pressing plate 32 to press the plate to be sheared on the shearing platform 54.
In the rolling shearing process, the vertically installed shearing hydraulic cylinder 3 drives the arc-shaped connecting rod 4 to act, the arc-shaped connecting rod 4 drives the first connecting rod 6 and the synchronous connecting rod 5 to act, and power is transmitted to the upper connecting rod 7 and the second connecting rod 8 through the synchronous connecting rod 5, so that synchronous movement of the arc-shaped connecting rod 4, the upper connecting rod 7, the first connecting rod 6 and the second connecting rod 8 is realized, and the upper cutter holder 9 is driven to do rolling shearing.
The shearing hydraulic system is used for controlling the shearing hydraulic cylinder 3 to work, the shearing hydraulic system comprises a first pressure reducing valve 12, an oil port B of the first pressure reducing valve 12 is connected to a high-pressure oil pipe 24, an oil port A of the first pressure reducing valve 12 is connected with an oil port B of a first hydraulic check valve 13, an oil port A of the first hydraulic check valve 13 is connected with an oil port P of a proportional valve 14 with differential pressure compensation, an oil port A of the proportional valve 14 with differential pressure compensation is connected with an oil port B of a second hydraulic check valve 15, an oil port B of the proportional valve 14 with differential pressure compensation is connected with an oil port B of a third hydraulic check valve 16, an oil port T of the proportional valve 14 with differential pressure compensation is connected with an oil port A of a check valve 28, an oil port A of the second hydraulic check valve 15 is connected with an oil return pipe 25, an oil port A of the third hydraulic check valve 16 is connected with an oil port P of the shearing hydraulic cylinder 3, an oil port A of the first hydraulic check valve 13, an oil port A of the second hydraulic check valve 15 is connected with an oil port B of the accumulator, an oil port B of the accumulator 17 is connected with an oil tank 17, a group of the first hydraulic accumulator 17 is connected with an oil port B of the accumulator 17, a group of the accumulator 17 is connected with an oil port B of the hydraulic accumulator 17, a group of the accumulator 17 is connected with an oil port B of the accumulator 17, and an oil port B is connected with an oil port B of the accumulator 17, the hydraulic oil port A of the supercharger 19 is connected with the hydraulic oil port A of the one-way sequence valve 20, the hydraulic oil port B of the one-way sequence valve 20 is connected with the hydraulic oil port B of the proportional valve 14 with differential pressure compensation, the hydraulic oil ports Y of the first pressure reducing valve 12, the first hydraulic control one-way valve 13, the second hydraulic control one-way valve 15, the third hydraulic control one-way valve 16 and the one-way sequence valve 20 are all connected with the oil unloading pipe 26, and a built-in displacement sensor 21 is arranged in the piston rod of the shearing hydraulic cylinder 3.
The clamping hydraulic system is used for controlling the clamping hydraulic cylinder 34 to work and comprises a second pressure reducing valve 39, an oil port B of the second pressure reducing valve 39 is connected with the high-pressure oil pipe 24, an oil port Y of the second pressure reducing valve 39 is connected with the oil unloading pipe 26, an oil port A of the second pressure reducing valve 39 is connected with an oil port P of a first electromagnetic reversing valve 40, an oil port A of the first electromagnetic reversing valve 40 is connected with an oil port A of a fourth hydraulic control one-way valve 41, an oil port B of the fourth hydraulic control one-way valve 41 is connected with an oil port B of the clamping hydraulic cylinder 34, an oil port B of the clamping hydraulic cylinder 34 is also connected with an oil port P of an electromagnetic relief valve 43, an oil port T of the electromagnetic relief valve 43 is connected with an oil port T of the first electromagnetic reversing valve 40 and connected with an oil return pipe 25 as a safety valve, an oil port B of the clamping hydraulic cylinder 34 is also connected with an oil port P of a second accumulator group 44, an oil port T of the second accumulator group 44 is connected with an oil return pipe 25, an oil port B of the fourth hydraulic control one-way valve is connected with an oil port B of the hydraulic control valve 34, an impact valve is also connected with an oil port B of the third hydraulic control valve 42, and the hydraulic control valve is connected with the third hydraulic cylinder 42, and the impact valve is connected with the ball valve 42 of the hydraulic control valve is connected with the third hydraulic cylinder 42;
The hydraulic system is used for controlling the operation of the hydraulic cylinder 31, the hydraulic system comprises a valve group formed by overlapping and installing an overlapped pressure reducing valve 46, a second electromagnetic directional valve 47, a hydraulic lock 48 and a two-way throttle speed regulating valve 49, the valve group formed by overlapping and installing is respectively connected with an oil port A and an oil port B of the hydraulic cylinder 31, the oil port A of the hydraulic cylinder 31 is also connected with an oil port P of a direct-acting overflow valve 50, the oil port T of the direct-acting overflow valve 50 is connected with an oil return pipe 25, a fourth pressure sensor 51 is arranged at the oil port A of the hydraulic cylinder 31 and used for monitoring the working pressure of the hydraulic cylinder 31 in real time, preventing the excessive pressing force from leaving an indentation on the surface of a plate, and the unloading effect is achieved through the direct-acting overflow valve 50 after the pressing force exceeds a pressure target set value.
Example 2
The differences between this embodiment and embodiment 1 are: the included angle gamma between the horizontal part and the bending part of the arc-shaped connecting rod 4 is 120 degrees; the included angle alpha between the upper connecting rod 7 and the vertical line is-10 degrees; the included angle between the first connecting rod 6 and the vertical line is beta, and the included angle between the second connecting rod 8 and the vertical line is beta 1,β=β1 degrees to be-5 degrees; the included angle phi between the guide rod 10 and the horizontal line is 7 degrees; the distance H between the hinge point of the arc connecting rod 4 and the upper cross beam 2 and the hinge point of the upper connecting rod 7 and the upper cross beam 2 is 3000mm, the length A of the horizontal part of the arc connecting rod 4 is 1200mm, the length B of the bending part is 1000mm, the lengths of the first connecting rod 6 and the second connecting rod 8 are the same, the lengths are M, and the M is: 1000mm, length N of upper link 7 is: 1000mm.
Example 3
The differences between this embodiment and embodiment 1 are: the included angle gamma between the horizontal part and the bending part of the arc-shaped connecting rod 4 is 140 degrees; the included angle alpha between the upper connecting rod 7 and the vertical line is 30 degrees; the included angle between the first connecting rod 6 and the vertical line is beta, and the included angle between the second connecting rod 8 and the vertical line is beta 1,β=β1 degrees; the included angle phi between the guide rod 10 and the horizontal line is 10 degrees; the distance H between the hinge point of the arc connecting rod 4 and the upper cross beam 2 and the hinge point of the upper connecting rod 7 and the upper cross beam 2 is 4500mm, the length A of the horizontal part of the arc connecting rod 4 is 2200mm, the length B of the bending part is 2000mm, the lengths of the first connecting rod 6 and the second connecting rod 8 are the same, M is: 2000mm, the length N of the upper connecting rod 7 is: 2000mm.
Shearing working principle: the electromagnet YB1 on the proportional valve 14 with differential pressure compensation, the electromagnet Y2 on the first ball valve 17 and the electromagnet Y1 on the second ball valve 22 are respectively electrified, hydraulic oil in the high-pressure oil pipe 24 flows into ase:Sub>A rodless cavity of the shearing hydraulic cylinder 3 through ase:Sub>A B-A channel of the first pressure reducing valve 12, ase:Sub>A B-A channel of the first hydraulic control check valve 13, ase:Sub>A P-B channel of the proportional valve 14 with differential pressure compensation and ase:Sub>A B-A channel of the third hydraulic control check valve 16, ase:Sub>A piston rod of the shearing hydraulic cylinder 3 stretches out to drive the arc-shaped connecting rod 4 to act, the arc-shaped connecting rod 4 drives the first connecting rod 6 and the synchronous connecting rod 5 to act, and power is transmitted to the upper connecting rod 7 and the second connecting rod 8 through the synchronous connecting rod 5, so that the synchronous movement of the arc-shaped connecting rod 4, the upper connecting rod 7, the first connecting rod 6 and the second connecting rod 8 is realized, and the upper cutter seat 9 is driven to roll and shear, and the shearing section of the steel plate is completed.
Meanwhile, hydraulic oil with ase:Sub>A rod cavity on the shearing hydraulic cylinder 3 enters the first energy accumulator group 18 through ase:Sub>A P-A channel of the first ball valve 17, when the charging pressure of the first energy accumulator group 18 reaches the pressure set threshold value of the second pressure sensor 27, the electromagnet Y2 is powered off, and the hydraulic oil flows into the oil return pipe 25 through ase:Sub>A B-A channel of the first hydraulic control check valve 13, an A-T channel of the proportional valve 14 with differential pressure compensation and an A-B channel of the check valve 28.
When the piston rod of the shearing hydraulic cylinder 3 moves upwards, the upper blade 52 is driven to move, after the upper blade 52 is contacted with a steel plate, the one-way sequence valve 20 is opened due to the rising of the system pressure, hydraulic oil of the system enters a large cavity of the booster 19 to work, and meanwhile, high-pressure oil of a small cavity of the booster 19 flows into a rodless cavity of the shearing hydraulic cylinder 3 through the oil port B, so that the shearing force is increased; the smooth shearing of the steel plate is ensured, and the working efficiency is improved.
In the rolling shearing process, the shearing hydraulic cylinder 3 and the proportional valve 14 with differential pressure compensation form a position closed loop through the built-in displacement sensor 21 to control the shearing position of the upper blade 52 in real time; the working pressure of the large cavity of the shearing hydraulic cylinder 3 can be adjusted in real time through the cooperative control of the first pressure reducing valve 12 and the first pressure sensor 29;
When the shearing blade completes the return stroke of the shearing action, the electromagnet YB2 on the proportional valve 14 with differential pressure compensation, the electromagnet Y2 on the first ball valve 17 and the electromagnet Y1 on the second ball valve 22 are respectively electrified, and hydraulic oil in the high-pressure oil pipe 24 flows into ase:Sub>A rod cavity of the main hydraulic cylinder 1 through ase:Sub>A B-A channel of the first pressure reducing valve 12, ase:Sub>A B-A channel of the first hydraulic control one-way valve 13, ase:Sub>A P-A channel of the proportional valve 14 with differential pressure compensation and ase:Sub>A B-A channel of the second hydraulic control one-way valve 15, so that the return stroke of the piston of the shearing hydraulic cylinder 3 is driven; meanwhile, high-pressure oil stored in the first energy accumulator group 18 flows into the rod cavity of the shearing hydraulic cylinder 3 through the P-A channel of the first ball valve 17, so that the return speed of the piston of the shearing hydraulic cylinder 3 is accelerated, and the shearing efficiency is improved; in the return process, the return oil of the rodless cavity of the shearing hydraulic cylinder 3 enters the small cavity of the booster 19 due to the damping action of the throttling valve port in the proportional valve 14 with differential pressure compensation, so that the booster 19 is reset to prepare for the next stroke, and the redundant return oil flows back to the oil tank through the A-B channel of the third hydraulic control one-way valve 16, the B-T channel of the proportional valve 14 with differential pressure compensation and the A-B channel of the one-way valve 28.
While the principal features and advantages of the present invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (2)
1. The utility model provides a metal sheet rolling shear of pneumatic cylinder perpendicular installation drive, includes shearing subassembly and shearing hydraulic system, shearing subassembly includes frame (1) the upper end of frame (1) is provided with entablature (2), its characterized in that: a shearing hydraulic cylinder (3) is vertically arranged on one side of the frame (1), the lower end of the shearing hydraulic cylinder (3) is hinged with the frame (1) through a pin shaft, the upper end of a piston rod of the shearing hydraulic cylinder (3) is hinged with one end of an arc connecting rod (4), the arc transition bending part of the arc connecting rod (4) is hinged with an upper cross beam (2), the other end of the arc connecting rod (4) is hinged with one end of a synchronous connecting rod (5) and the upper end of a first connecting rod (6) through a pin shaft, the other end of the synchronous connecting rod (5) is hinged with the lower end of an upper connecting rod (7) and the upper end of a second connecting rod (8) through a pin shaft, the upper end of the upper connecting rod (7) is hinged with an upper cross beam (2) through a pin shaft, the lower ends of the first connecting rod (6) and the second connecting rod (8) are respectively hinged with an upper cutter holder (9), the downward bending part of the arc connecting rod (4) is arranged in parallel with the upper connecting rod (7), the other end of the first connecting rod (6) is hinged with the lower end of the second connecting rod (8) and the upper cutter holder (9) is connected with a guide rod (10), the guide rod (11) is fixedly arranged on one side of the guide rod (11), a lower blade (53) is arranged below the upper blade (52), and the lower blade (53) is arranged on a shearing platform (54);
The included angle gamma between the horizontal part and the bending part of the arc-shaped connecting rod (4) is 110-140 degrees; the included angle alpha between the upper connecting rod (7) and the vertical line is-30 degrees; the included angle between the first connecting rod (6) and the vertical line is beta, and the included angle between the second connecting rod (8) and the vertical line is beta 1,β=β1 -25 degrees; the included angle phi between the guide rod (10) and the horizontal line is 5-10 degrees; the distance H between the hinge point of the arc-shaped connecting rod (4) and the upper cross beam (2) and the hinge point of the upper connecting rod (7) and the upper cross beam (2) is 1000 mm-4500 mm, the length A of the horizontal part of the arc-shaped connecting rod (4) is 400 mm-2200 mm, the length B of the bending part is 200 mm-2000 mm, the lengths of the first connecting rod (6) and the second connecting rod (8) are the same, M is 200 mm-2000 mm, and the length N of the upper connecting rod (7) is 200 mm-2000 mm;
the shearing hydraulic system is used for controlling the shearing hydraulic cylinder (3) to work;
The shearing hydraulic system comprises a first pressure reducing valve (12), an oil port B of the first pressure reducing valve (12) is connected to a high-pressure oil pipe (24), an oil port A of the first pressure reducing valve (12) is connected with an oil port B of a first hydraulic control one-way valve (13), an oil port A of the first hydraulic control one-way valve (13) is connected with an oil port P of a proportional valve (14) with differential pressure compensation, an oil port A of the proportional valve (14) with differential pressure compensation is connected with an oil port B of a second hydraulic control one-way valve (15), an oil port B of the proportional valve (14) with differential pressure compensation is connected with an oil port B of a third hydraulic control one-way valve (16), an oil port T of the proportional valve (14) with differential pressure compensation is connected with an oil port A of a one-way valve (28), an oil port B of the one-way valve (28) is connected with an oil return pipe (25), an oil port A of the second hydraulic control one-way valve (15) is connected with an oil port B of a shearing hydraulic cylinder (3), an oil port A of the third hydraulic control one-way valve (16) is connected with an oil port A of the hydraulic control one-way valve (15), an oil port B of the hydraulic control one-way valve (22) is connected with an oil port A of the second hydraulic control one-way valve (22) and an oil port (22) of the hydraulic control one-way valve (22) is connected with the hydraulic control one-way valve (22), the hydraulic system is characterized in that an oil port B of the shearing hydraulic cylinder (3) is further connected with an oil port P of a first ball valve (17), an oil port A of the first ball valve (17) is communicated with an oil port A of a first energy accumulator group (18), a second pressure sensor (27) is arranged at the oil port A of the first energy accumulator group (18), the oil port T of the first energy accumulator group (18) is connected with an oil tank, a first pressure sensor (29) is arranged at the oil port A of the shearing hydraulic cylinder (3), the oil port A of the shearing hydraulic cylinder (3) is further connected with an oil port B of a booster (19), the oil port A of the booster (19) is connected with an oil port A of a one-way sequence valve (20), the oil port B of the one-way sequence valve (20) is connected with an oil port B of a proportional valve (14) with pressure difference compensation, and oil discharge ports Y of a first pressure reducing valve (12), a first hydraulic one-way valve (13), a second hydraulic one-way valve (15), a third hydraulic one-way valve (16) and a one-way sequence valve (20) are connected with an oil discharge port Y of the oil pipe (26), and a hydraulic system is provided with a hydraulic piston rod (21) arranged inside the shearing hydraulic system;
In the rolling shearing process, a vertically installed shearing hydraulic cylinder (3) drives an arc-shaped connecting rod (4) to act, the arc-shaped connecting rod (4) drives a first connecting rod (6) and a synchronous connecting rod (5) to act, power is transmitted to an upper connecting rod (7) and a second connecting rod (8) through the synchronous connecting rod (5), synchronous movement of the arc-shaped connecting rod (4), the upper connecting rod (7), the first connecting rod (6) and the second connecting rod (8) is realized, and then an upper cutter holder (9) is driven to do rolling shearing;
The device also comprises a compressing assembly, a clamping hydraulic system and a compressing hydraulic system which are arranged at the inlet side of the frame (1); the pressing assembly comprises a fixed seat (30) fixedly connected with the frame (1), at least three pressing hydraulic cylinders (31) are vertically arranged in the fixed seat (30), the lower ends of the pressing hydraulic cylinders (31) are connected with a pressing plate (32), and the pressing plate (32) is positioned below the fixed seat (30); the clamping assembly comprises two connecting seats (33) arranged on the outer side of the fixed seat (30), a clamping hydraulic cylinder (34) is hinged to the connecting seats (33), the other end of the clamping hydraulic cylinder (34) is hinged to one end of an installation seat (35), the other end of the installation seat (35) is hinged to the fixed seat (30), an upper pinch roll (36) is arranged on the installation seat (35), a lower pinch roll (37) is arranged below the upper pinch roll (36), the lower pinch roll (37) is rotatably arranged on the lower portion of the frame (1), and one end of the lower pinch roll (37) is connected with an output shaft of a stepping motor (38) through a coupler;
The clamping hydraulic system is used for controlling the clamping hydraulic cylinder (34) to work, and the compacting hydraulic system is used for controlling the compacting hydraulic cylinder (31) to work;
The clamping hydraulic system comprises a second pressure reducing valve (39), an oil port B of the second pressure reducing valve (39) is connected with a high-pressure oil pipe (24), an oil port Y of the second pressure reducing valve (39) is connected with an oil unloading pipe (26), an oil port A of the second pressure reducing valve (39) is connected with an oil port P of a first electromagnetic directional valve (40), an oil port A of the first electromagnetic directional valve (40) is connected with an oil port A of a fourth hydraulic control one-way valve (41), an oil port B of the fourth hydraulic control one-way valve (41) is connected with an oil port B of a clamping hydraulic cylinder (34), an oil port B of the first electromagnetic directional valve (40) is connected with an oil port A of a clamping hydraulic cylinder (34), an oil port X of the fourth hydraulic control one-way valve (41) is connected with an oil port A of a third ball valve (42), an oil port P of the third ball valve (42) is connected with the high-pressure oil pipe (24), and oil ports T of the third ball valve (42) are connected with an oil return pipe (25); a third pressure sensor (45) is further arranged at the oil port A of the clamping hydraulic cylinder (34) and used for monitoring the working pressure of the clamping hydraulic cylinder (34) in real time;
The compaction hydraulic system comprises a valve group formed by overlapping and installing an overlapped pressure reducing valve (46), a second electromagnetic directional valve (47), a hydraulic lock (48) and a bidirectional throttle speed regulating valve (49), and the valve group formed by overlapping and installing is respectively connected with an oil port A and an oil port B of a compaction hydraulic cylinder (31); the hydraulic oil port A of the compressing hydraulic cylinder (31) is also connected with the hydraulic oil port P of the direct-acting overflow valve (50), the hydraulic oil port T of the direct-acting overflow valve (50) is connected with the oil return pipe (25), a fourth pressure sensor (51) is arranged at the hydraulic oil port A of the compressing hydraulic cylinder (31) and used for monitoring the working pressure of the compressing hydraulic cylinder (31) in real time, preventing the compressing force from being too high to leave an indentation on the surface of a plate, and unloading through the direct-acting overflow valve (50) after the compressing force exceeds a pressure target set value so as to play a role of unloading;
Before rolling shearing starts, a stepping motor (38) drives a lower pinch roll (37) to rotate, meanwhile, a clamping hydraulic cylinder (34) drives an upper pinch roll (36) to move downwards, the upper pinch roll (36) and the lower pinch roll (37) clamp a plate to be sheared together and convey the plate to a target position forwards, the stepping motor (38) stops working, a pressing hydraulic cylinder (31) in a fixing seat (30) stretches downwards and drives a pressing plate (32) to press the plate to be sheared on a shearing platform (54).
2. A hydraulic cylinder vertically mounted driven sheet metal rolling shear as defined in claim 1 wherein: the hydraulic fluid port B of clamp send pneumatic cylinder (34) still is connected with the hydraulic fluid port P of electromagnetic relief valve (43), the hydraulic fluid port T of electromagnetic relief valve (43) links to each other with the hydraulic fluid port T of first electromagnetic reversing valve (40) and returns back to oil return pipe (25), electromagnetic relief valve (43) are used for urgent unloading as the relief valve, the hydraulic fluid port B of clamp send pneumatic cylinder (34) still is connected with the hydraulic fluid port P of second energy storage group (44), the hydraulic fluid port T of second energy storage group (44) is connected with oil return pipe (25), second energy storage group (44) are used for absorbing the pulsation impact of hydraulic pipeline and accelerate the return speed of clamp send pneumatic cylinder (34), improve work efficiency.
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| CN202410195522.5A CN117754034B (en) | 2024-02-22 | 2024-02-22 | Metal plate rolling shearing machine driven by hydraulic cylinder in vertical installation mode |
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