CN109322881B - Double-station horizontal plate shearing machine and hydraulic system and application thereof - Google Patents
Double-station horizontal plate shearing machine and hydraulic system and application thereof Download PDFInfo
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- CN109322881B CN109322881B CN201811413316.8A CN201811413316A CN109322881B CN 109322881 B CN109322881 B CN 109322881B CN 201811413316 A CN201811413316 A CN 201811413316A CN 109322881 B CN109322881 B CN 109322881B
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- 238000010008 shearing Methods 0.000 title claims abstract description 90
- 239000003921 oil Substances 0.000 claims description 269
- 238000003825 pressing Methods 0.000 claims description 82
- 239000000463 material Substances 0.000 claims description 26
- 230000001502 supplementing effect Effects 0.000 claims description 24
- 238000007599 discharging Methods 0.000 claims description 6
- 238000005381 potential energy Methods 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 238000005242 forging Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
- B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
- B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/07—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors in distinct sequence
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Shearing Machines (AREA)
Abstract
The invention discloses a double-station horizontal plate shearing machine, a hydraulic system and application thereof, and belongs to the technical field of forging machine tools. The hydraulic system of the double-station horizontal plate shearing machine comprises an oil tank, an oil pump, an electrohydraulic reversing valve, a left main cylinder, a left auxiliary cylinder, a right main cylinder and a right auxiliary cylinder, wherein an oil inlet of the oil pump is connected with the oil tank, and an oil outlet of the oil pump is connected with a P port of the electrohydraulic reversing valve on one hand and is connected with the oil tank through an electromagnetic overflow valve on the other hand; the port A of the electro-hydraulic reversing valve is connected with the rodless cavity of the left main cylinder, the port B of the electro-hydraulic reversing valve is connected with the rodless cavity of the right main cylinder, the rod-containing cavities of the left main cylinder and the right main cylinder are respectively connected with the rodless cavities of the left auxiliary cylinder and the right auxiliary cylinder correspondingly, and the rod-containing cavities of the left auxiliary cylinder and the right auxiliary cylinder are connected with the oil inlets of the electromagnetic overflow valve. The hydraulic system is matched with the horizontal plate shearing machine, so that the accurate shearing processing of the two wing surfaces of the automobile girder can be realized, and the hydraulic system is simple in structure and low in cost.
Description
Technical Field
The invention belongs to the technical field of plate shearing machines, and particularly relates to a double-station horizontal plate shearing machine, a hydraulic system thereof and application thereof.
Background
A plate shearing machine (English name: PLATE SHEARS; guillotine shear) is a machine for shearing plates by reciprocating one blade relative to the other blade in a linear motion, and mainly uses a moving upper blade and a fixed lower blade to apply shearing force to metal plates with various thicknesses by adopting reasonable blade gaps so as to break and separate the plates according to the required size. At present, the plate shearing machine is widely applied to industries such as aviation, light industry, metallurgy, chemical industry, construction, ships, automobiles, electric power, electric appliances, decoration and the like.
In the prior art, a plate shearing machine is generally used for shearing and processing an automobile girder, the automobile girder is generally of a U-shaped channel steel structure, two side edges of the automobile girder comprise two ends of a straight line section and two ends of an inclined section, the existing shearing machine is generally of a vertical structure, when the U-shaped channel steel is processed by the vertical shearing machine, the straight line section on the U-shaped channel steel needs to be processed firstly, and then the inclined section on the U-shaped channel steel needs to be processed after the U-shaped channel steel rotates for a certain angle. Therefore, the processing procedures are more, the processing efficiency is low, and the processing requirements of enterprises cannot be met.
Based on the defects, the applicant develops a double-station horizontal plate shearing machine (application number 201010605818.8), and the structure of the horizontal plate shearing machine is optimally designed, and the shapes of the cutting edge of the fixed blade and the cutting edge of the movable blade are consistent with the cut of the side edge of the U-shaped channel steel, so that the two side edges of the U-shaped channel steel can be respectively cut and molded at one time, and the cutting efficiency is higher; meanwhile, the application can finish the forming processing treatment of the automobile to be formed after the automobile to be formed is fixed Liang Anfang through the arrangement of double shearing stations, and the position of the U-shaped channel steel does not need to be turned over or readjusted. However, the hydraulic system of the existing plate shearing machine cannot meet the double-station shearing requirement of the horizontal plate shearing machine, so that two independent hydraulic systems are required to be arranged, shearing actions of different stations are controlled through the two independent hydraulic systems, and the hydraulic system is complex in structure and high in cost.
Through retrieving, chinese patent application number 201810367455.5 discloses a hydraulic system of a multi-station punching shear production line, the hydraulic system of the application comprising: the hydraulic system comprises an oil tank, an oil pump, a cartridge valve, a first overflow valve, a first electromagnetic valve, a second overflow valve, a third electromagnetic valve, a third overflow valve, a first pressure relay, a fourth electromagnetic valve, a second pressure relay, an energy accumulator, a plurality of oil cylinder electromagnetic valves and a plurality of oil cylinders; the oil pump is connected with the oil tank through a pipeline; the oil pump is connected with the cartridge valve, the first pressure relay, the fourth electromagnetic valve and the electromagnetic valves of the oil cylinders through hydraulic oil ways; the cartridge valve is connected with the first overflow valve and the first electromagnetic valve through a control liquid path; the cartridge valve is connected with the second electromagnetic valve and the second overflow valve through a control liquid path; the cartridge valve is connected with a third electromagnetic valve and a third overflow valve through a control liquid path; the fourth electromagnetic valve is connected with the second pressure relay, the energy accumulator and the lower cavity of each oil cylinder through a hydraulic oil way; the electromagnetic valves of the oil cylinders are respectively connected with the upper cavities of the corresponding oil cylinders through hydraulic oil paths. The hydraulic system of the application can realize stamping control of multiple punches, but a plurality of electromagnetic valves are required to be arranged to control stamping work of different punches respectively.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to overcome the defect that the existing hydraulic system of the plate shearing machine is difficult to meet the double-station shearing requirement of the horizontal plate shearing machine, and provides a double-station horizontal plate shearing machine, a hydraulic system and application thereof. By adopting the technical scheme of the invention, the accurate shearing processing of the horizontal plate shearing machine on the left side and the right side of the automobile girder can be realized, and the hydraulic system is simple in structure and low in cost.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
The hydraulic system of the double-station horizontal plate shearing machine comprises an oil tank, an oil pump, an electro-hydraulic reversing valve, a left main cylinder, a left auxiliary cylinder, a right main cylinder and a right auxiliary cylinder, wherein an oil inlet of the oil pump is connected with the oil tank, and an oil outlet of the oil pump is connected with a P port of the electro-hydraulic reversing valve on one hand and is connected with the oil tank through an electromagnetic overflow valve on the other hand; the port A of the electro-hydraulic reversing valve is connected with the rodless cavity of the left main cylinder, the port B of the electro-hydraulic reversing valve is connected with the rodless cavity of the right main cylinder, the rod-containing cavities of the left main cylinder and the right main cylinder are respectively connected with the rodless cavities of the left auxiliary cylinder and the right auxiliary cylinder correspondingly, and the rod-containing cavities of the left auxiliary cylinder and the right auxiliary cylinder are connected with the oil inlets of the electromagnetic overflow valve.
Furthermore, a first one-way sequence valve is arranged on a pipeline between an A port of the electro-hydraulic reversing valve and the rodless cavity of the left main cylinder, and a second one-way sequence valve is arranged between a B port of the electro-hydraulic reversing valve and the rodless cavity of the right main cylinder.
Still further, still include the swager jar, this swager jar includes left side swager jar, right side swager jar, upper left swager jar and upper right swager jar, and wherein upper left swager jar and upper right swager jar link to each other with the A mouth, the B mouth of electrohydraulic reversing valve respectively, and left side swager jar, right side swager jar link to each other with the oil-out of first check sequence valve and second check sequence valve respectively.
Furthermore, the oil outlet of the oil pump is also connected with the oil inlets of the first electromagnetic directional valve and the second electromagnetic directional valve respectively, the oil outlets of the first electromagnetic directional valve and the second electromagnetic directional valve are connected with the oil tank, the oil control port of the first electromagnetic directional valve is connected with the rod cavity of the left main cylinder and the rod cavity of the left auxiliary cylinder, and the oil control port of the second electromagnetic directional valve is connected with the rod cavity of the right main cylinder and the rodless cavity of the right auxiliary cylinder.
Furthermore, needle valves and energy accumulators are arranged on the pipelines between the oil outlet of the oil pump and rod cavities of the left auxiliary cylinder and the right auxiliary cylinder.
Furthermore, the T port of the electro-hydraulic reversing valve is connected with the oil tank, the oil inlet of the oil pump is connected with the oil tank through the oil filter, and the oil pump is connected with the motor drive.
Further, an oil outlet of the oil pump is connected with a pressure gauge and a pressure gauge switch.
Secondly, the double-station horizontal plate shearing machine comprises the hydraulic system.
Thirdly, the application of the double-station horizontal plate shearing machine is applied to shearing of two wing surfaces of an automobile girder, and specifically comprises the following steps:
Step one, oil supplementing of an accumulator
Starting the motor and the oil pump, powering on YV1, wherein the control port of the electromagnetic relief valve is not communicated with the oil tank to play a role of a common relief valve, oil supplied by the oil pump directly enters the lower part of the energy accumulator through the needle valve, and when the pressure reaches a specified size, the needle valve is closed, and the oil supplementing of the energy accumulator is completed;
Step two, oil supplementing and discharging of left cylinder
Oil supplementing: YV1 and YV4 are powered on, at the moment, the control port of the electromagnetic relief valve is not communicated with the oil tank to play a role of a common relief valve, the first electromagnetic directional valve is communicated with an oil path, and oil supplied by the oil pump directly enters a rod cavity of the left main cylinder and a rodless cavity of the left auxiliary cylinder through the first electromagnetic directional valve to realize oil supplementing;
Oil discharge: when the YV1 is powered off and the YV4 is powered on, the control port of the electromagnetic relief valve is communicated with the oil tank to play a role of an unloading valve, the first electromagnetic reversing valve is communicated with an oil path, and oil in the rod cavity of the left main cylinder and the rodless cavity of the left auxiliary cylinder directly returns to the oil tank through the electromagnetic relief valve;
Step three, shearing by a left tool rest
The YV1 and YV2 are powered on, at the moment, the control port of the electromagnetic relief valve is not communicated with the oil tank to play a role of a common relief valve, the right position of the electrohydraulic reversing valve is communicated with an oil path, oil supplied by the oil pump enters the left upper pressing cylinder through the electrohydraulic reversing valve, the left upper pressing cylinder presses the material, the pressure continues to rise, after reaching the pressure set by the first unidirectional sequence valve, the oil directly enters the left pressing cylinder and the rodless cavity of the left main cylinder through the first unidirectional sequence valve, the left pressing cylinder presses the material, the tool rest completes the shearing action, and the oil with the rod cavity of the left auxiliary cylinder is stored in the accumulator for return use;
step four, left knife rest return stroke
When the YV1 is powered off and the YV2 is powered on, at the moment, the control port of the electromagnetic relief valve is communicated with the oil tank to play a role of an unloading valve, potential energy stored by the energy accumulator is released after the tool rest completes shearing action, pressure oil enters a rod cavity of the left auxiliary cylinder, oil in the rod-free cavity of the left main cylinder returns to the oil tank through the first one-way sequence valve, the electro-hydraulic reversing valve and the electromagnetic relief valve, and the tool rest returns; at the moment, the pressure oil of the left pressing cylinder and the left upper pressing cylinder also returns to the oil tank through the electrohydraulic reversing valve and the electromagnetic overflow valve, and the pressing cylinder is decompressed and returns;
Fifthly, supplementing and discharging oil for right cylinder
Oil supplementing: YV1 and YV5 are powered on, at the moment, the control port of the electromagnetic relief valve is not communicated with the oil tank to play a role of a common relief valve, the second electromagnetic directional valve is communicated with an oil path, and oil supplied by the oil pump directly enters a rod cavity of the right main cylinder and a rodless cavity of the right auxiliary cylinder through the second electromagnetic directional valve to realize oil supplementing;
Oil discharge: YV1 is powered off, YV5 is powered on, at the moment, the control port of the electromagnetic relief valve is communicated with the oil tank to play a role of an unloading valve, the second electromagnetic reversing valve is communicated with an oil path, and oil in the rod cavity of the right main cylinder and the rodless cavity of the right auxiliary cylinder directly returns to the oil tank through the electromagnetic relief valve;
Step six, shearing by a right knife rest
YV1 and YV3 are powered on, at the moment, the control port of the electromagnetic overflow valve is not connected with the oil tank to play a role of a common overflow valve, the left position of the electrohydraulic reversing valve is connected with an oil path, oil supplied by the oil pump enters a right upper pressing cylinder through the electrohydraulic reversing valve, the right upper pressing cylinder presses the material, the pressure continues to rise, after reaching the pressure set by the second unidirectional sequence valve, the oil directly enters a right pressing cylinder and a rodless cavity of a right main cylinder through the second unidirectional sequence valve, the right pressing cylinder presses the material, a right knife rest completes the shearing action, and the oil in the rod cavity of a right auxiliary cylinder is stored in an accumulator for return use;
seventh, returning the right tool rest
Yv1 loses power and YV3 gets power, at this moment, the electromagnetic overflow valve control port is communicated with the oil tank to play the role of an unloading valve, after the tool rest completes the shearing action, potential energy stored by the energy accumulator is released, pressure oil enters a rod cavity of the right auxiliary cylinder, oil in the rodless cavity of the right main cylinder returns to the oil tank through the second one-way sequence valve, the electro-hydraulic reversing valve and the electromagnetic overflow valve, and the tool rest returns. At the moment, the pressure oil of the right upper material pressing cylinder and the right lateral material pressing cylinder also returns to the oil tank through the electrohydraulic reversing valve and the electromagnetic overflow valve, and the material pressing cylinder is decompressed and returns.
Furthermore, the left side material pressing cylinder, the right side material pressing cylinder, the left upper material pressing cylinder and the right upper material pressing cylinder are self-resetting spring cylinders, and the liquid filling pressure of the energy accumulator is larger than the spring resetting force of the left side material pressing cylinder and the right side material pressing cylinder.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) The hydraulic system of the double-station horizontal plate shearing machine comprises an oil tank, an oil pump, an electrohydraulic reversing valve, a left main cylinder, a left auxiliary cylinder, a right main cylinder and a right auxiliary cylinder, and can meet the requirements of the horizontal double-station plate shearing machine by optimally designing the hydraulic system.
(2) According to the hydraulic system of the double-station horizontal plate shearing machine, one energy accumulator is used for returning the left and right groups of oil cylinders, so that the same return force of the two groups of oil cylinders can be effectively ensured, and further, the running action of equipment can be ensured to be more coordinated and reliable; in addition, the structure of the hydraulic system is optimized, so that the shearing work of the two groups of oil cylinders can be ensured to be carried out at different time, and the hydraulic system has an interlocking function, thereby being beneficial to ensuring the shearing effect on one hand and being capable of effectively preventing the return stroke of the oil cylinders from being influenced due to insufficient oil supply of the energy accumulator on the other hand.
(3) According to the hydraulic system of the double-station horizontal plate shearing machine, the left and right groups of oil cylinders respectively position sheared workpieces in two directions during shearing action, the upper surface is pressed first and the side surface is pressed later during pressing, and the shearing work is performed only after the side pressure is positioned in place, so that the fixing firmness of the workpieces during shearing can be effectively improved, and the shearing quality is guaranteed. Meanwhile, when the right tool rest is required to be sheared, the left tool rest is firstly returned, and the right tool rest starts shearing work after the right upper pressing cylinder and the right side pressing cylinder work in place, so that the sequence of firstly returning and then shearing is met.
(4) According to the double-station horizontal plate shearing machine, the hydraulic system is optimally designed, so that the requirement of double-station shearing of the automobile girder can be met, the hydraulic system is simple in structural design and low in cost, and the shearing precision of two sides of the automobile girder can be effectively ensured.
(5) The invention relates to an application of a double-station horizontal plate shearing machine, which adopts a group of motor oil pumps and a three-station four-way valve to respectively control four actions of shearing and return of a left oil cylinder and a right oil cylinder, the two directions of a sheared workpiece are positioned by feeding and lateral pressing, the left and right shearing respectively shears two wing surfaces of the workpiece, and the two oil cylinders can be interlocked when shearing, so that the shearing quality can be ensured, and the normal return of the oil cylinders is not influenced.
Drawings
Fig. 1 is a schematic structural view of a hydraulic system of a double-station horizontal plate shearing machine.
Reference numerals in the schematic drawings illustrate:
1. An oil filter; 2. an oil pump; 3. a motor; 4. a pressure gauge; 5. a pressure gauge switch; 6. a first electromagnetic directional valve; 701. a left pressing cylinder; 702. a right-side pressing cylinder; 801. a first one-way sequence valve; 802. a second one-way sequence valve; 901. a left master cylinder; 902. a left auxiliary cylinder; 903. a right master cylinder; 904. a right auxiliary cylinder; 10. a needle valve; 11. an accumulator; 12. an electrohydraulic reversing valve; 13. an electromagnetic spill valve; 1401. a left upper pressing cylinder; 1402. a right upper pressing cylinder; 15. and a second electromagnetic directional valve.
Detailed Description
For a further understanding of the present invention, the present invention will now be described in detail with reference to the drawings and specific examples.
Example 1
As shown in fig. 1, the hydraulic system of the double-station horizontal plate shearing machine of the embodiment comprises an oil tank 16, an oil pump 2, an electro-hydraulic reversing valve 12, a left main cylinder 901, a left auxiliary cylinder 902, a right main cylinder 903 and a right auxiliary cylinder 904, wherein an oil inlet of the oil pump 2 is connected with the oil tank 16, and an oil outlet of the oil pump 2 is connected with a port P of the electro-hydraulic reversing valve 12 on one hand and connected with the oil tank 16 through an electromagnetic overflow valve 13 on the other hand; the port a of the electro-hydraulic reversing valve 12 is connected with the rodless cavity of the left main cylinder 901, the port B of the electro-hydraulic reversing valve is connected with the rodless cavity of the right main cylinder 903, the rod cavities of the left main cylinder 901 and the right main cylinder 903 are respectively connected with the rodless cavities of the left auxiliary cylinder 902 and the right auxiliary cylinder 904, the rod cavities of the left auxiliary cylinder 902 and the right auxiliary cylinder 904 are respectively connected with the oil inlet of the electromagnetic overflow valve 13, and the pipelines (the oil inlet of the electromagnetic overflow valve 13 and the pipeline between the rod cavities of the left auxiliary cylinder 902 and the right auxiliary cylinder 904) between the oil outlet of the oil pump 2 and the rod cavities of the left auxiliary cylinder 902 and the right auxiliary cylinder 904 are also provided with the needle valve 10 and the accumulator 11. A first one-way sequence valve 801 is arranged on a pipeline between an A port of the electro-hydraulic reversing valve 12 and a rodless cavity of the left main cylinder 901, a second one-way sequence valve 802 is arranged between a B port of the electro-hydraulic reversing valve 12 and a rodless cavity of the right main cylinder 903, a T port of the electro-hydraulic reversing valve 12 is connected with an oil tank 16, an oil inlet of an oil pump 2 is connected with the oil tank 16 through an oil filter 1, and the oil pump 2 is in driving connection with a motor 3.
The hydraulic system of this embodiment further includes a pressing cylinder including a lateral pressing cylinder (left lateral pressing cylinder 701, right lateral pressing cylinder 702) and an upper pressing cylinder (left upper pressing cylinder 1401 and right upper pressing cylinder 1402), wherein the left upper pressing cylinder 1401 and right upper pressing cylinder 1402 are respectively connected with an a port and a B port of the electrohydraulic reversing valve 12, and the left lateral pressing cylinder 701, right lateral pressing cylinder 702 are respectively connected with oil outlets of the first unidirectional sequence valve 801 and the second unidirectional sequence valve 802. The left side pressure cylinder 701, the right side pressure cylinder 702, the left upper pressure cylinder 1401 and the right upper pressure cylinder 1402 are self-resetting spring cylinders, and the charging pressure of the accumulator 11 is greater than the spring return force of the left side pressure cylinder 701 and the right side pressure cylinder 702.
In this embodiment, the oil outlet of the oil pump 2 is further connected to the oil inlets of the first electromagnetic directional valve 6 and the second electromagnetic directional valve 15, the oil outlets of the first electromagnetic directional valve 6 and the second electromagnetic directional valve 15 are both connected to the oil tank 16, and the oil control port of the first electromagnetic directional valve 6 is connected to the rod cavity of the left master cylinder 901 and the rod cavity of the left slave cylinder 902, and the oil control port of the second electromagnetic directional valve 15 is connected to the rod cavity of the right master cylinder 903 and the rodless cavity of the right slave cylinder 904.
Example 2
The hydraulic system of the double-station horizontal plate shearing machine in this embodiment has a structure substantially the same as that in embodiment 1, and further, the oil outlet of the oil pump 2 is connected with the pressure gauge 4 and the pressure gauge switch 5. The double-station horizontal plate shearing machine comprises the hydraulic system.
The application of the double-station horizontal plate shearing machine in the embodiment realizes the respective actions of the left knife rest and the right knife rest of the horizontal plate shearing machine by matching a group of motor oil pumps with a whole set of valve groups, and realizes the accurate shearing processing of the horizontal plate shearing machine on the left side and the right side of the automobile girder, and the double-station horizontal plate shearing machine specifically comprises the following steps:
Step one, oil supplementing of an accumulator
Starting the motor 3 and the oil pump 2, and enabling the Yvl to be powered on, wherein at the moment, a control port of the electromagnetic relief valve 13 is not communicated with an oil tank to play a role of a common relief valve, oil supplied by the oil pump 3 directly enters the lower part of the accumulator 11 through the needle valve 10, and when the pressure reaches a specified size, the needle valve 10 is closed, and the oil supplementing of the accumulator 11 is completed;
Step two, oil supplementing and discharging of left cylinder
(A) Oil supplementing: YV1 and YV4 are powered on, at the moment, the control port of the electromagnetic relief valve 13 is not communicated with the oil tank to play a role of a common relief valve, the first electromagnetic directional valve 6 is communicated with an oil path, and oil supplied by the oil pump 3 directly enters a rod cavity of the left main cylinder 901 and a rodless cavity of the left auxiliary cylinder 902 through the first electromagnetic directional valve 6 to realize oil supplementing;
(b) Oil discharge: bYV1 is powered off, YV4 is powered on, at the moment, a control port of the electromagnetic overflow valve 13 is communicated with an oil tank to play a role of an unloading valve, the first electromagnetic directional valve 6 is communicated with an oil path, and oil in a rod cavity of the left main cylinder 901 and an oil in a rodless cavity of the left auxiliary cylinder 902 directly returns to the oil tank through the electromagnetic overflow valve 13;
Step three, shearing by a left tool rest
YV1 and YV2 are powered on, at the moment, the control port of the electromagnetic relief valve 13 is not communicated with an oil tank to play a role of a common relief valve, the right position of the electro-hydraulic reversing valve 12 is communicated with an oil path, oil supplied by the oil pump 3 enters the left upper pressing cylinder 1401 through the electro-hydraulic reversing valve 12, the left upper pressing cylinder 1401 presses the materials, the pressure continues to rise, after reaching the pressure set by the first one-way sequence valve 801, the oil directly enters the rodless cavities of the left pressing cylinder 701 and the left main cylinder 901 through the first one-way sequence valve 801, and because the filling pressure of the accumulator is larger than the spring restoring force of the side pressing cylinder, the left knife rest performs shearing action after the pressing action of the left pressing cylinder 701 is in place, and the oil with the rod cavity of the left auxiliary cylinder 902 is stored in the accumulator 11 for return use;
step four, left knife rest return stroke
YV1 is powered off, YV2 is powered on, at the moment, a control port of the electromagnetic overflow valve 13 is communicated with the oil tank 16 to play a role of an unloading valve, potential energy stored by the energy accumulator 11 is released after the tool rest completes shearing action, pressure oil enters a rod cavity of the left auxiliary cylinder 902, oil in a rodless cavity of the left main cylinder 901 returns to the oil tank 16 through the first one-way sequence valve 801, the electro-hydraulic reversing valve 12 and the electromagnetic overflow valve 13, and the tool rest returns; at this time, the pressure oil of the left side pressure cylinder 701 and the left upper pressure cylinder 1401 also returns to the oil tank through the electrohydraulic reversing valve 12 and the electromagnetic overflow valve 13, and the pressure of the pressure cylinders is relieved and returns;
Fifthly, supplementing and discharging oil for right cylinder
(A) Oil supplementing: YV1 and YV5 are powered on, at the moment, the control port of the electromagnetic relief valve 3 is not communicated with an oil tank to play a role of a common relief valve, the second electromagnetic directional valve 15 is communicated with an oil path, and oil supplied by the oil pump 3 directly enters a rod cavity of the right main cylinder 903 and a rodless cavity of the right auxiliary cylinder 904 through the second electromagnetic directional valve 15 to realize oil supplementing;
(b) Oil discharge: YV1 is powered off, YV5 is powered on, at the moment, the control port of the electromagnetic relief valve 3 is communicated with the oil tank to play a role of an unloading valve, the second electromagnetic reversing valve 15 is communicated with an oil path, and oil in the rod cavity of the right main cylinder 903 and the rodless cavity of the right auxiliary cylinder 904 directly returns to the oil tank through the electromagnetic relief valve 13;
Step six, shearing by a right knife rest
YV1 and YV3 are powered on, at the moment, the control port of the electromagnetic overflow valve 13 is not communicated with an oil tank to play a role of a common overflow valve, the left position of the electro-hydraulic reversing valve 12 is communicated with an oil path, oil supplied by the oil pump 3 enters the right upper pressing cylinder 1402 through the electro-hydraulic reversing valve 12, the right upper pressing cylinder 1402 presses the materials, the pressure continues to rise, after reaching the pressure set by the second one-way sequence valve 802, the oil directly enters the rod-free cavities of the right pressing cylinder 702 and the right master cylinder 903 through the second one-way sequence valve 802, the right pressing cylinder 702 presses the materials, a right cutter rest completes the shearing action, and the oil in the rod cavity of the right auxiliary cylinder 904 is stored in the energy accumulator 11 for return use; after the YV3 of the electrohydraulic reversing valve 12 is electrified, the left tool rest is firstly returned under the action of the energy accumulator 11 because the rodless state of the left main cylinder is in a state of releasing charge, and the right tool rest starts to cut after the right upper pressing cylinder and the right side pressing cylinder work in place, so that the sequence of returning before cutting is satisfied.
Seventh, returning the right tool rest
YV1 loses power, YV3 gets the electricity, and electromagnetic spill valve 13 control port switch-on oil tank plays the unloading valve effect at this moment, and the knife rest accomplishes the shearing action after, and energy storage 11 stored potential energy release, and the pressure oil gets into right auxiliary cylinder 904 and has the pole chamber, and the fluid in the no pole chamber of right master cylinder 903 returns the oil tank through second unidirectional sequence valve 802, electrohydraulic switching-over valve 12 and electromagnetic spill valve 13, and the knife rest returns. At this time, the pressure oil of the right upper pressing cylinder 1402 and the right lateral pressing cylinder 702 also returns to the oil tank through the electro-hydraulic reversing valve 12 and the electromagnetic relief valve 13, and the pressing cylinders release pressure and return.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (8)
1. A hydraulic system of a double-station horizontal plate shearing machine is characterized in that: the hydraulic oil pump comprises an oil tank (16), an oil pump (2), an electrohydraulic reversing valve (12), a left main cylinder (901), a left auxiliary cylinder (902), a right main cylinder (903) and a right auxiliary cylinder (904), wherein an oil inlet of the oil pump (2) is connected with the oil tank (16), and an oil outlet of the oil pump is connected with a P port of the electrohydraulic reversing valve (12) on one hand and is connected with the oil tank (16) through an electromagnetic overflow valve (13) on the other hand; the port A of the electro-hydraulic reversing valve (12) is connected with a rodless cavity of a left main cylinder (901), the port B of the electro-hydraulic reversing valve is connected with a rodless cavity of a right main cylinder (903), rod-containing cavities of the left main cylinder (901) and the right main cylinder (903) are respectively connected with rodless cavities of a left auxiliary cylinder (902) and a right auxiliary cylinder (904) correspondingly, and rod-containing cavities of the left auxiliary cylinder (902) and the right auxiliary cylinder (904) are connected with an oil inlet of an electromagnetic overflow valve (13);
the hydraulic system further comprises a pressing cylinder, wherein the pressing cylinder comprises a left pressing cylinder (701), a right pressing cylinder (702), a left upper pressing cylinder (1401) and a right upper pressing cylinder (1402), the left upper pressing cylinder (1401) and the right upper pressing cylinder (1402) are respectively connected with an A port and a B port of an electrohydraulic reversing valve (12), and the left pressing cylinder (701) and the right pressing cylinder (702) are respectively connected with oil outlets of a first unidirectional sequence valve (801) and a second unidirectional sequence valve (802); the left side pressing cylinder (701), the right side pressing cylinder (702), the left upper pressing cylinder (1401) and the right upper pressing cylinder (1402) are self-resetting spring cylinders; a first one-way sequence valve (801) is arranged on a pipeline between an A port of the electro-hydraulic reversing valve (12) and a rodless cavity of the left main cylinder (901), and a second one-way sequence valve (802) is arranged between a B port of the electro-hydraulic reversing valve (12) and a rodless cavity of the right main cylinder (903).
2. The hydraulic system of the double-station horizontal plate shearing machine according to claim 1, wherein: the oil outlet of the oil pump (2) is further connected with oil inlets of a first electromagnetic directional valve (6) and a second electromagnetic directional valve (15), the oil outlets of the first electromagnetic directional valve (6) and the second electromagnetic directional valve (15) are connected with an oil tank (16), an oil control port of the first electromagnetic directional valve (6) is connected with a rod cavity of a left main cylinder (901) and a rodless cavity of a left auxiliary cylinder (902), and an oil control port of the second electromagnetic directional valve (15) is connected with a rod cavity of a right main cylinder (903) and a rodless cavity of a right auxiliary cylinder (904).
3. The hydraulic system of the double-station horizontal plate shearing machine according to claim 2, wherein: the needle valve (10) and the energy accumulator (11) are further arranged on the pipeline between the oil outlet of the oil pump (2) and rod cavities of the left auxiliary cylinder (902) and the right auxiliary cylinder (904).
4. The hydraulic system of the double-station horizontal plate shearing machine according to claim 1, wherein: the T-shaped port of the electro-hydraulic reversing valve (12) is connected with an oil tank (16), the oil inlet of the oil pump (2) is connected with the oil tank (16) through an oil filter (1), and the oil pump (2) is in driving connection with a motor (3).
5. The hydraulic system of the double-station horizontal plate shearing machine as recited in claim 4, wherein: an oil outlet of the oil pump (2) is connected with a pressure gauge (4) and a pressure gauge switch (5).
6. A double-station horizontal plate shearing machine is characterized in that: comprising a hydraulic system according to any one of claims 1-5.
7. The application of the double-station horizontal plate shearing machine is characterized in that the hydraulic system of claim 3 is adopted by the double-station horizontal plate shearing machine and is applied to the shearing of two wing surfaces of an automobile girder, and the method specifically comprises the following steps:
Step one, oil supplementing of an accumulator
Starting the motor (3) and the oil pump (2), and powering YV1, wherein at the moment, a control port of the electromagnetic relief valve (13) is not communicated with an oil tank to play a role of a common relief valve, oil supplied by the oil pump (2) directly enters the lower part of the energy accumulator (11) through the needle valve (10), and when the pressure reaches a specified size, the needle valve (10) is closed, and the oil supplementing of the energy accumulator (11) is completed;
Step two, oil supplementing and discharging of left cylinder
(A) Oil supplementing: YV1 and YV4 are powered on, at the moment, the control port of the electromagnetic overflow valve (13) is not communicated with the oil tank to play a role of a common overflow valve, the first electromagnetic directional valve (6) is communicated with an oil path, and oil supplied by the oil pump (2) directly enters a rod cavity of the left main cylinder (901) and a rodless cavity of the left auxiliary cylinder (902) through the first electromagnetic directional valve (6) to realize oil supplementing;
(b) Oil discharge: YV1 is powered off, YV4 is powered on, at the moment, a control port of the electromagnetic relief valve (13) is communicated with an oil tank to play a role of an unloading valve, the first electromagnetic reversing valve (6) is communicated with an oil path, and oil in a rod cavity of the left main cylinder (901) and an oil in a rodless cavity of the left auxiliary cylinder (902) directly returns to the oil tank through the electromagnetic relief valve (13);
Step three, shearing by a left tool rest
YV1 and YV2 are powered on, at the moment, a control port of an electromagnetic overflow valve (13) is not communicated with an oil tank to play a role of a common overflow valve, the right position of an electro-hydraulic reversing valve (12) is communicated with an oil path, oil supplied by an oil pump (2) enters an upper left pressing cylinder (1401) through the electro-hydraulic reversing valve (12), the upper left pressing cylinder (1401) presses the materials, the pressure continues to rise, after reaching the pressure set by a first one-way sequence valve (801), the oil directly enters a left pressing cylinder (701) and a rodless cavity of a left master cylinder (901) through the first one-way sequence valve (801), the left pressing cylinder (701) presses the materials, a cutter rest completes the shearing action, and the oil with the rod cavity of the left auxiliary cylinder (902) is stored in an energy accumulator (11) for return use;
step four, left knife rest return stroke
YV1 is powered off, YV2 is powered on, at the moment, a control port of an electromagnetic overflow valve (13) is communicated with an oil tank (16) to play a role of an unloading valve, potential energy stored by an energy accumulator (11) is released after a tool rest completes shearing action, pressure oil enters a rod cavity of a left auxiliary cylinder (902), oil in a rodless cavity of a left main cylinder (901) returns to the oil tank (16) through a first one-way sequence valve (801), an electro-hydraulic reversing valve (12) and the electromagnetic overflow valve (13), and the tool rest returns; at the moment, the pressure oil of the left pressing cylinder (701) and the left upper pressing cylinder (1401) also returns to the oil tank through the electro-hydraulic reversing valve (12) and the electromagnetic overflow valve (13), and the pressing cylinders release pressure and return;
Fifthly, supplementing and discharging oil for right cylinder
(A) Oil supplementing: YV1 and YV5 are powered on, at the moment, the control port of the electromagnetic overflow valve (13) is not communicated with the oil tank to play a role of a common overflow valve, the second electromagnetic directional valve (15) is communicated with an oil path, and oil supplied by the oil pump (2) directly enters a rod cavity of the right main cylinder (903) and a rodless cavity of the right auxiliary cylinder (904) through the second electromagnetic directional valve (15) to realize oil supplementing;
(b) Oil discharge: YV1 is powered off, YV5 is powered on, at the moment, a control port of the electromagnetic overflow valve (13) is communicated with an oil tank to play a role of an unloading valve, the second electromagnetic reversing valve (15) is communicated with an oil path, and oil in a rod cavity of the right main cylinder (903) and a rodless cavity of the right auxiliary cylinder (904) directly returns to the oil tank through the electromagnetic overflow valve (13);
Step six, shearing by a right knife rest
YV1 and YV3 are powered on, at the moment, a control port of an electromagnetic overflow valve (13) is not communicated with an oil tank to play a role of a common overflow valve, an oil way is communicated with the left position of an electro-hydraulic reversing valve (12), oil supplied by an oil pump (2) enters a right upper pressing cylinder (1402) through the electro-hydraulic reversing valve (12), the right upper pressing cylinder (1402) presses materials, the pressure continues to rise, after reaching the pressure set by a second one-way sequence valve (802), the oil directly enters a right pressing cylinder (702) and a rodless cavity of a right master cylinder (903) through the second one-way sequence valve (802), the right pressing cylinder (702) presses materials, a right cutter frame completes shearing action, and the oil in the rod cavity of a right auxiliary cylinder (904) is stored in an energy accumulator (11) for return use;
seventh, returning the right tool rest
YV1 is powered off, YV3 is powered on, at the moment, a control port of an electromagnetic overflow valve (13) is communicated with an oil tank to play a role of an unloading valve, potential energy stored by an energy accumulator (11) is released after a tool rest completes shearing action, pressure oil enters a rod cavity of a right auxiliary cylinder (904), oil in a rodless cavity of a right main cylinder (903) returns to the oil tank through a second one-way sequence valve (802), an electro-hydraulic reversing valve (12) and the electromagnetic overflow valve (13), and the tool rest returns; at the moment, the pressure oil of the right upper pressing cylinder (1402) and the right pressing cylinder (702) also returns to the oil tank through the electro-hydraulic reversing valve (12) and the electromagnetic overflow valve (13), and the pressing cylinders release pressure and return.
8. The use of a double-station horizontal plate shearing machine as defined in claim 7, wherein: the left side pressure material cylinder (701), the right side pressure material cylinder (702), the left upper pressure material cylinder (1401) and the right upper pressure material cylinder (1402) are self-resetting spring cylinders, and the charging pressure of the energy accumulator (11) is larger than the spring resetting force of the left side pressure material cylinder (701) and the right side pressure material cylinder (702).
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| CN109848474A (en) * | 2019-03-29 | 2019-06-07 | 安徽东海机床制造有限公司 | A kind of horizontal plate shearing machine and its shearing inclination adjustment control method of shearing inclination adjust automatically |
| CN110529443B (en) * | 2019-08-23 | 2024-06-25 | 江苏高德液压机械有限公司 | Hydraulic system of three-direction shearing packer |
| CN112045126B (en) * | 2020-08-19 | 2021-07-23 | 浙江万得凯流体设备科技股份有限公司 | Forging equipment and forging method for copper part |
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