CN109538551B - Hydraulic system of large chip press - Google Patents
Hydraulic system of large chip press Download PDFInfo
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- CN109538551B CN109538551B CN201811621185.2A CN201811621185A CN109538551B CN 109538551 B CN109538551 B CN 109538551B CN 201811621185 A CN201811621185 A CN 201811621185A CN 109538551 B CN109538551 B CN 109538551B
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 15
- 230000001502 supplementing effect Effects 0.000 claims description 53
- 239000000463 material Substances 0.000 claims description 17
- 150000001875 compounds Chemical class 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 374
- 239000007788 liquid Substances 0.000 description 9
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- 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
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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
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a hydraulic system of a large-scale chip press, which comprises an oil pump, an oil tank, a pushing oil cylinder and a charging oil cylinder, wherein an outlet of the oil pump is connected with an inlet end of an oil inlet main oil path, a pressure regulating valve group is arranged on the oil inlet main oil path, and a rodless cavity of the pushing oil cylinder is communicated with a rodless cavity of the charging oil cylinder; the rodless cavity of the pushing oil cylinder and the rodless cavity of the charging oil cylinder are connected with an oil inlet main oil way through a first two-way cartridge valve; the rodless cavity of the pushing oil cylinder and the rodless cavity of the charging oil cylinder are communicated with the oil tank through a second two-way cartridge valve; the rod cavity of the pushing oil cylinder and the rod cavity of the charging oil cylinder are communicated with the main oil way, a one-way sequence valve is arranged between the rod cavity of the charging oil cylinder and the main oil way, a port b of the one-way sequence valve is connected with the main oil way, and a port a of the one-way sequence valve is connected with the rod cavity of the charging oil cylinder. This patent merges the integration, has reduced the part, has guaranteed normal work.
Description
Technical Field
The invention relates to the technical field of chip presses, in particular to a hydraulic system.
Background
The chip press comprises a pushing oil cylinder for pushing materials, a feeding oil cylinder for feeding materials and a main oil cylinder for pressing materials, a plurality of chip presses are used in the current market, pushing materials and feeding materials are all independently and sequentially operated, the pushing oil cylinder and the feeding oil cylinder are controlled by independent valves, more parts are needed, and the working modes are more in operation and more in needed conversion time.
Disclosure of Invention
The invention provides a hydraulic system of a large chip press, which solves at least one technical problem in the prior art.
The technical scheme of the invention is as follows: the hydraulic system of the large chip press comprises an oil pump, an oil tank, a pushing oil cylinder and a charging oil cylinder, wherein an outlet of the oil pump is connected with an inlet end of an oil inlet main oil path, and a pressure regulating valve group is arranged on the oil inlet main oil path;
the rodless cavity of the pushing oil cylinder and the rodless cavity of the charging oil cylinder are connected with an oil inlet main oil way through a first two-way cartridge valve;
the rodless cavity of the pushing oil cylinder and the rodless cavity of the charging oil cylinder are communicated with an oil tank through a second two-way cartridge valve;
the rod cavity of the pushing oil cylinder and the rod cavity of the charging oil cylinder are communicated with a main oil way, a one-way sequence valve is arranged between the rod cavity of the charging oil cylinder and the main oil way, a port b of the one-way sequence valve is connected with the main oil way, and a port a of the one-way sequence valve is connected with the rod cavity of the charging oil cylinder; the flow guiding direction of the one-way valve of the one-way sequence valve is from the port b to the port a;
the main oil way is connected with an oil inlet main oil way through a third two-way cartridge valve;
and the total oil way is communicated with the oil tank through a fourth two-way cartridge valve.
This patent all adopts the structure of independent two logical cartridge valves with the oil feed and the play oil of traditional pushing cylinder, charging cylinder, merges the integration, has reduced the part, has guaranteed normal work.
The unidirectional sequence valve has the function of leading the pushing action to precede the feeding, and preventing the pushing of the materials under the condition that the materials are not pressed. The one-way valve sequence valve is opened by pressure from an opening a to an opening b and is opened by one way from the opening b to the opening a.
Oil output by the oil pump enters rodless cavities of the pushing oil cylinder and the charging oil cylinder simultaneously through the first two-way cartridge valve, oil in the rod cavity of the pushing oil cylinder returns to the oil tank through the fourth two-way cartridge valve, the pushing oil cylinder advances to push materials, the oil in the rod cavity of the charging oil cylinder can pass through only when reaching the set pressure of the one-way sequence valve, and then returns to the oil tank through the fourth two-way cartridge valve, and the charging oil cylinder advances to charge materials. Thereby realizing that the pushing action precedes the charging action.
And when the feeding oil cylinder and the pushing oil cylinder return, the feeding oil cylinder and the pushing oil cylinder return simultaneously.
The hydraulic system of the large chip press also comprises a compound cylinder for pressing materials, wherein the compound cylinder comprises a piston cylinder and a plunger cylinder; the piston of the piston cylinder is provided with a cavity for accommodating the plunger, the piston of the piston cylinder is used as a cylinder body of the plunger cylinder, the plunger of the plunger cylinder is fixed on the cylinder body of the piston cylinder, and the plunger of the plunger cylinder and the piston of the piston cylinder enclose an oil storage cavity of the plunger cylinder;
the rod cavity of the piston cylinder is communicated with an oil inlet main oil way through a fifth cartridge valve, and the rod cavity of the piston cylinder is communicated with the oil tank through a sixth cartridge valve;
the oil storage cavity is communicated with the oil inlet main oil way through a seventh cartridge valve;
the rodless cavity of the piston cylinder is connected with an oil supplementing tank through a hydraulic control filling valve, and the oil supplementing tank is communicated with the oil tank;
and a control oil port of the hydraulic control charging valve is connected with the oil pump through an electromagnetic reversing valve.
This patent adopts the hydro-cylinder that is used for the swage to be the compound jar, is convenient for realize the effect of differential return stroke.
When the compound cylinder advances: when the seventh cartridge valve is controlled to be opened and the sixth cartridge valve is controlled to be opened, oil output by the oil pump enters the plunger cylinder through the seventh cartridge valve, meanwhile, oil with a rod cavity of the plunger cylinder enters the oil tank through the sixth cartridge valve, meanwhile, oil in the oil supplementing tank is supplemented into a rodless cavity of the plunger cylinder through the liquid supplementing valve, and the auxiliary oil cylinder and the main oil cylinder advance together at high speed and low pressure.
When the compound cylinder returns, the electromagnetic directional valve is controlled to be opened, the fifth cartridge valve is controlled to be opened, the seventh cartridge valve is opened, oil output by the oil pump enters a rod cavity of the piston cylinder through the fifth cartridge valve, oil in the plunger cylinder enters a front cavity of the piston cylinder through the seventh cartridge valve and the sixth cartridge valve, and oil in a rodless cavity of the piston cylinder returns to the oil supplementing tank through the liquid filling valve, and as the cross section area of the rod cavity of the piston cylinder is larger than that of the oil storage cavity of the plunger cylinder, differential quick return of a piston rod of the piston cylinder is realized.
The seventh cartridge valve comprises a three-way plug connector, wherein the three-way plug connector is provided with three oil ports, and the three oil ports are respectively a first oil port positioned on the front surface of a valve core of the three-way plug connector, and two second oil ports and a third oil port positioned on the side surface of the valve core of the three-way plug connector;
the first oil port is connected with an oil inlet main oil way, the second oil port is communicated with the oil storage cavity, and an inserted sequence valve is arranged between the third oil port and the rodless cavity of the piston cylinder.
By adding the plug-in sequence valve, when the pressure of the oil storage cavity of the plunger cylinder reaches the opening pressure of the plug-in sequence valve, high-pressure oil passes through the oil storage cavity of the plunger cylinder of the seventh plug-in sequence valve and enters the rodless cavity of the piston cylinder through the plug-in sequence valve, the liquid filling valve stops supplementing oil to the rear cavity of the piston cylinder, and the plunger cylinder and the piston cylinder advance together at high pressure and low speed.
The pressure regulating valve group comprises a one-way valve and an eighth two-way cartridge valve, and the inlets of the one-way valve and the eighth two-way cartridge valve are communicated with the outlet of the oil pump;
the one-way valve is arranged between the oil pump and the third two-way cartridge valve;
the eighth two-way cartridge valve is arranged between the oil pump and the oil tank.
This patent is through the check valve for prevent that fluid in the system from flowing backwards to the pump, adjust system's oil feed pressure through eighth two-way cartridge valve.
And a pressure gauge and a pressure transmitter are arranged on the oil inlet main oil way. The pressure of the oil inlet main oil way is convenient to detect.
Further preferably, the oil pumps are provided with an even number, the two oil pumps are oil pump groups, and the two oil pumps of the same oil pump group are in transmission connection with the rotating shaft of the same motor;
the two oil pumps of the same oil pump group are respectively a first oil pump and a second oil pump, and the outlet of the first oil pump is connected with the inlet of the pressure regulating valve group through a one-way valve;
and the outlet of the second oil pump is switched and connected with the inlet of the oil tank and the pressure regulating valve group through a valve group.
And is convenient for meeting different oil delivery requirements.
Six chip presses are arranged, the three chip presses are a chip press set, two chip press sets are respectively a first chip press set and a second chip press set;
the first chip press unit and the second chip press unit comprise three oil supplementing boxes which are arranged from front to back, the three oil supplementing boxes of the first chip press unit form a left Fang Buyou box group, the three oil supplementing boxes of the second chip press unit form a right oil supplementing box group, and the left Fang Buyou box group and the right oil supplementing box group are arranged left and right;
the oil replenishing boxes on the two sides of the left oil replenishing box group are communicated with the oil replenishing box on the center of the left Fang Buyou box group through a left communication pipe;
adjacent oil replenishing boxes in the right oil replenishing box group are communicated through a right communication pipe;
the first chip press unit and the second chip press unit comprise three oil tanks which are arranged from front to back, the three oil supplementing tanks of the first chip press unit form a front oil tank group, the three oil supplementing tanks of the second chip press unit form a rear oil tank group, and the front oil tank group and the rear oil tank group are arranged front and back;
the oil supplementing box in the center of the left oil supplementing box group is communicated with the oil box in the center of the rear oil box group through a first total oil return pipe; the flow of the first total oil return pipe is three times of the flow of the left communication pipe;
the oil supplementing box at the forefront in the right oil supplementing box group is communicated with the oil box at the rearmost position in the front oil box group through a second main oil return pipe; the flow of the second total oil return pipe is three times of the flow of the right communication pipe.
Compared with the traditional three oil return pipes, the pipeline layout is reduced, and the flow of the single total oil return pipe 2 is consistent with the flow of the traditional three oil return pipes, but the tiling size of the single total oil return pipe of the patent is only 3 (1/2) of the tiling size of the single oil return pipe.
The lowest part of the left side communication pipe, the lowest part of the right side communication pipe, the first total oil return pipe and the lowest part of the second total oil return pipe are flush.
Drawings
FIG. 1 is a hydraulic schematic of the present invention;
fig. 2 is a schematic diagram of an arrangement of six chip presses according to the present invention.
In the figure: 1 is an oil tank, 2.1 is a first one-way valve, 2.2 is a second one-way valve, 3.1 is a first oil pump, 3.2 is a second oil pump, 3.3 is a third oil pump, 3.4 is a fourth oil pump, 4.1 is a first motor, 4.2 is a second motor, 5 is a pressure gauge, 6 is a pressure transmitter, 7.1 is a first loading valve, 7.2 is a second loading valve, 8 is an electromagnetic directional valve, 9 is a cartridge valve group, 10 is a piston cylinder, 11 is a pushing oil cylinder, 12 is a charging oil cylinder, 13 is a one-way sequence valve, 14 is a charging valve, 15 is a charging oil tank, 16 is a plunger cylinder, 11a is a left side communicating pipe, 12a is a right side communicating pipe, 21 is a first total oil return pipe, and 22 is a second total oil return pipe.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 2, a hydraulic system of a large chip press comprises an oil pump, an oil tank 1, a pushing oil cylinder 11 and a charging oil cylinder, wherein an outlet of the oil pump is connected with an inlet end of an oil inlet main oil path, a pressure regulating valve group is arranged on the oil inlet main oil path, and a rodless cavity of the pushing oil cylinder 11 is communicated with a rodless cavity of the charging oil cylinder; the rodless cavity of the pushing oil cylinder 11 and the rodless cavity of the charging oil cylinder are connected with an oil inlet main oil way through a first two-way cartridge valve; the rodless cavity of the pushing oil cylinder 11 and the rodless cavity of the charging oil cylinder are communicated with the oil tank 1 through a second two-way cartridge valve; the rod cavity of the pushing oil cylinder 11 and the rod cavity of the charging oil cylinder are communicated with a main oil way, a one-way sequence valve 13 is arranged between the rod cavity of the charging oil cylinder 12 and the main oil way, a port b of the one-way sequence valve 13 is connected with the main oil way, and a port a of the one-way sequence valve 13 is connected with the rod cavity of the charging oil cylinder 12; the flow guiding direction of the one-way valve of the one-way sequence valve 13 is from the port b to the port a; the main oil way is connected with an oil inlet main oil way through a third two-way cartridge valve; the total oil way is communicated with the oil tank 1 through a fourth two-way cartridge valve.
This patent all adopts the structure of independent two logical cartridge valves with the oil feed and the play oil of traditional pushing cylinder 11, charging cylinder, merges the integration, has reduced the part, has guaranteed normal work. The one-way sequence valve 13 has the function of making the pushing action precede the feeding and preventing the pushing out of the material without being pressed. The one-way valve sequence valve is opened by pressure from an opening a to an opening b and is opened by one way from the opening b to the opening a. Oil output by the oil pump enters rodless cavities of the pushing oil cylinder 11 and the charging oil cylinder 12 through a first two-way cartridge valve, oil in a rod cavity of the pushing oil cylinder 11 returns to the oil tank 1 through a fourth two-way cartridge valve, the pushing oil cylinder 11 advances to push, the oil in the rod cavity of the charging oil cylinder 12 can pass only after reaching the set pressure of the one-way sequence valve 13, and then returns to the oil tank 1 through the fourth two-way cartridge valve, and the charging oil cylinder 12 advances to charge. Thereby realizing that the pushing action precedes the charging action.
When the feeding cylinder 12 and the pushing cylinder 11 return, return is performed simultaneously.
The hydraulic system of the large chip press also comprises a compound cylinder for pressing materials, wherein the compound cylinder comprises a piston cylinder 10 and a plunger cylinder 16; the piston of the piston cylinder 10 is provided with a cavity for accommodating the plunger, the piston of the piston cylinder 10 is used as a cylinder body of the plunger cylinder 16, the plunger of the plunger cylinder 16 is fixed on the cylinder body of the piston cylinder 10, and the plunger of the plunger cylinder 16 and the piston of the piston cylinder 10 enclose an oil storage cavity of the plunger cylinder 16; the rod cavity of the piston cylinder 10 is communicated with an oil inlet main oil way through a fifth cartridge valve, and the rod cavity of the piston cylinder 10 is communicated with the oil tank 1 through a sixth cartridge valve; the oil storage cavity is communicated with an oil inlet main oil way through a seventh cartridge valve; the rodless cavity of the piston cylinder 10 is connected with an oil supplementing tank 15 through a hydraulic control filling valve, and the oil supplementing tank 15 is communicated with the oil tank 1; the control oil port of the hydraulic control charging valve is connected with the oil pump through an electromagnetic directional valve 8.
The seventh cartridge valve comprises a three-way plug connector, wherein the three-way plug connector is provided with three oil ports, and the three oil ports are respectively a first oil port positioned on the front surface of a valve core of the three-way plug connector, and two second oil ports and a third oil port positioned on the side surface of the valve core of the three-way plug connector; the first oil port is connected with an oil inlet main oil way, the second oil port is communicated with an oil storage cavity, and an inserted sequence valve is arranged between the third oil port and a rodless cavity of the piston cylinder 10.
This patent adopts the hydro-cylinder that is used for the swage to be the compound jar, is convenient for realize the effect of differential return stroke.
When the compound cylinder advances: when the seventh cartridge valve is controlled to be opened and the sixth cartridge valve is controlled to be opened, oil output by the oil pump enters the plunger cylinder through the seventh cartridge valve, meanwhile, oil with a rod cavity of the plunger cylinder enters the oil tank through the sixth cartridge valve, meanwhile, oil in the oil supplementing tank is supplemented into a rodless cavity of the plunger cylinder through the liquid supplementing valve, and the plunger cylinder advance together at high speed and low pressure.
When the compound cylinder returns, the electromagnetic directional valve is controlled to be opened, the fifth cartridge valve is controlled to be opened, the seventh cartridge valve is opened, oil output by the oil pump enters a rod cavity of the piston cylinder through the fifth cartridge valve, oil in the plunger cylinder enters a front cavity of the piston cylinder through the seventh cartridge valve and the sixth cartridge valve, and oil in a rodless cavity of the piston cylinder returns to the oil supplementing tank through the liquid filling valve, and as the cross section area of the rod cavity of the piston cylinder is larger than that of the oil storage cavity of the plunger cylinder, differential quick return of a piston rod of the piston cylinder is realized.
By adding the plug-in sequence valve, when the pressure of the oil storage cavity of the plunger cylinder reaches the opening pressure of the plug-in sequence valve, high-pressure oil passes through the oil storage cavity of the plunger cylinder of the seventh plug-in sequence valve and enters the rodless cavity of the piston cylinder through the plug-in sequence valve, the liquid filling valve stops supplementing oil to the rear cavity of the piston cylinder, and the plunger cylinder and the piston cylinder advance together at high pressure and low speed.
The pressure regulating valve group comprises a one-way valve and an eighth two-way cartridge valve, and inlets of the one-way valve and the eighth two-way cartridge valve are communicated with an outlet of the oil pump; the one-way valve is arranged between the oil pump and the third two-way cartridge valve; the eighth two-way cartridge valve is arranged between the oil pump and the oil tank. This patent is through the check valve for prevent that fluid in the system from flowing backwards to the pump, adjust system's oil feed pressure through eighth two-way cartridge valve.
The oil pumps are provided with an even number, the two oil pumps are oil pump groups, and the two oil pumps of the same oil pump group are in transmission connection with the rotating shaft of the same motor; the two oil pumps of the same oil pump group are respectively a first oil pump and a second oil pump, and the outlet of the first oil pump is connected with the inlet of the pressure regulating valve group through a one-way valve; the outlet of the second oil pump is switched and connected with the inlet of the oil tank and the pressure regulating valve group through a valve group. And is convenient for meeting different oil delivery requirements.
The valve group is a loading valve. All the two-way cartridge valves adopt an electric control reversing valve as a pilot control valve. All the two-way cartridge valves form a cartridge valve group, and the two-way cartridge valves with outlets connected with the oil tank are provided with overflow plug-ins.
And a pressure gauge and a pressure transmitter are arranged on the oil inlet main oil way. The pressure of the oil inlet main oil way is convenient to detect. Preferably, the pressure gauge and the pressure transmitter are arranged between the pressure regulating valve group and the oil pump.
A pressure relief oil way communicated with an oil tank is arranged between the rodless cavity of the piston cylinder and the plug-in type sequence valve. The pressure release oil way is provided with an electromagnetic valve, and the electromagnet of the electromagnetic valve is Y11.
The electromagnet of the electric control reversing valve of the first two-way cartridge valve is Y06; the electromagnet of the electric control reversing valve of the second two-way cartridge valve is Y07; the electromagnet of the electric control reversing valve of the third two-way cartridge valve is Y04; the electromagnet of the electric control reversing valve of the fourth two-way cartridge valve is Y05; the electromagnet of the electric control reversing valve of the fifth two-way cartridge valve is Y08; the electromagnet of the electric control reversing valve of the sixth two-way cartridge valve is Y09; the electromagnet of the electric control reversing valve of the seventh two-way cartridge valve is Y10; the electromagnet of the electric control reversing valve of the eighth two-way cartridge valve is Y03; the electromagnet of the electromagnetic directional valve between the control oil port of the hydraulic control liquid charging valve and the oil pump is Y12.
The oil pump group is provided with two. The motors of the two oil pump sets are respectively a first motor 4.1 and a second motor 4.2, four oil pumps (respectively, a first oil pump 3.1, a second oil pump 3.2, a third oil pump 3.3 and a fourth oil pump 3.4) are respectively arranged in the two oil pump sets, two one-way valves (respectively, a first one-way valve 2.1 and a second one-way valve 2.2) are respectively connected with the two oil pump sets, two loading valves (respectively, a first loading valve 7.1 and a second loading valve 7.2) are respectively connected with the two oil pump sets, and the first loading valve and the second loading valve both comprise electromagnetic directional valves. The electromagnet of the electromagnetic directional valve of the first loading valve 7.1 is YV01, and the electromagnet of the electromagnetic directional valve of the second loading valve 7.2 is YV02.
The working process of the hydraulic system of the large chip press comprises the following steps:
a. the oil pump is driven by a motor to output oil to directly return to the oil tank 1 through overflow plug-ins on the loading valve 7 and the cartridge valve group 9, the system is unloaded, and the oil tank does not work;
b. the compound cylinder advances, electromagnets YV01, YV02, Y03, Y09 and Y10 are powered, oil output by an oil pump enters a plunger cylinder 16 of the compound cylinder through a seventh cartridge valve G of the cartridge valve group 9, oil with a rod cavity of the piston cylinder 10 returns to an oil tank through a sixth cartridge valve F of the cartridge valve group 9, the rodless cavity of the piston cylinder 10 is supplemented with oil from an oil supplementing tank 15 through a liquid charging valve 14, the piston cylinder 10 rapidly advances and presses, when the pressure reaches the pressure of a cartridge sequence valve I in the cartridge valve group 9, the oil output by the oil pump enters the rodless cavity of the piston cylinder 10 through a seventh cartridge valve H and a cartridge sequence valve I in the cartridge valve group 9, the piston cylinder continuously advances to press and form materials, the power of the powered electromagnet is lost when the pressure continuously rises to the set pressure of a pressure transmitter, and the action stops and enters the next action;
c. the compound cylinder returns, electromagnets YV01, YV02, Y03, Y08, Y10 and Y11 are powered on, oil output by an oil pump enters a rod cavity of the piston cylinder 10 through a fifth cartridge valve E of the cartridge valve group 9, oil in a rodless cavity of the piston cylinder 10 returns to the oil supplementing tank 15 through the liquid filling valve 14, oil in the plunger cylinder 16 enters the rod cavity of the piston cylinder 10 together with oil output by the oil pump through the cartridge valve group 9 (a seventh cartridge valve G and a fifth cartridge valve E), a differential loop is formed, the piston cylinder returns quickly, and after the electromagnet is powered off, the action stops and enters the next action;
d. the pushing oil cylinder advances, the charging oil cylinder advances, the electromagnets YV01, YV02, YV03, Y05 and Y06 are powered, oil output by the oil pump enters rodless cavities of the pushing oil cylinder 11 and the charging oil cylinder 12 through a first cartridge valve A in the cartridge valve group 9 at the same time, oil in the rod cavity of the pushing oil cylinder 11 returns to the oil tank through a fourth cartridge valve D in the cartridge valve group 9, the pushing oil cylinder 11 advances to push, the oil in the rod cavity of the charging oil cylinder 12 must reach the set pressure of the one-way sequence valve 13 to pass, and then returns to the oil tank through the fourth cartridge valve D in the cartridge valve group 9, the charging oil cylinder 12 advances to charge, the one-way sequence valve 13 is used for leading the pushing action to precede the charging, preventing the material from being pushed out under the condition that the material is not pressed, and the electromagnet considers that the power-losing action stops and enters the next action after the material is fed in place;
e. the oil output by the oil pump enters rod cavities of the pushing oil cylinder 11 and the feeding oil cylinder 12 through a third cartridge valve C in the cartridge valve group 9 at the same time, the oil in rodless cavities of the pushing oil cylinder 11 and the feeding oil cylinder 12 returns to the oil tank through a second cartridge valve B in the cartridge valve group 9, and the pushing oil cylinder and the feeding oil cylinder return to complete a block pressing process.
The reason for the hydraulic system being faster than before is that: firstly, the forward and backward of the pushing oil cylinder and the feeding oil cylinder are powered simultaneously, so that the electromagnetic power-on and power-off time and the valve reflecting time during independent actions are reduced; secondly, the return stroke of the main pressure oil cylinder utilizes a differential loop to accelerate the speed of the oil cylinder.
Two limit switches for detecting the movement progress of a piston rod of the piston cylinder are arranged in the piston cylinder.
The limit switch is a correlation sensing device, and the correlation sensing device comprises an infrared light emitting element, an infrared photosensitive sensor, a green light emitting element, a green light photosensitive sensor, an ultraviolet light emitting element and an ultraviolet photosensitive sensor which are positioned at the same height; the infrared light-emitting element is arranged opposite to the infrared photosensitive sensor, the green light-emitting element is arranged opposite to the green light photosensitive sensor, and the ultraviolet light-emitting element is arranged opposite to the ultraviolet photosensitive sensor. The structure of the limit switch is convenient to optimize, detection of the movement process of the piston rod is convenient to achieve, chromaticity of hydraulic oil can be detected through the limit switch, and temperature and density of the hydraulic oil are obtained according to chromaticity analysis. And in the early stage, according to different temperature adjustment of the hydraulic oil, numerical information corresponding to the infrared photosensitive sensor, the green photosensitive sensor and the ultraviolet photosensitive sensor is obtained, chromaticity information and density information are recorded and stored in a database, and in the later stage, data comparison is carried out to obtain the temperature and density information of the current hydraulic oil.
The chip presses are provided with at least two chip presses, and each chip press comprises an oil tank and an oil supplementing tank. The oil tanks of at least two chip presses are communicated with each other, and adjacent oil supplementing tanks in the oil supplementing tanks of at least two chip presses are communicated through a communication pipe. Any oil supplementing box of the at least two chip presses is communicated with the nearest oil box in the at least two chip presses through a total oil return pipe;
the flow of the total oil return pipe is the product of the flow of the communication pipe and the number of the chip presses.
Referring to fig. 2, six chip presses are provided, one chip press unit is provided for three chip presses, and two chip press units are provided for the first chip press unit and the second chip press unit respectively; the first chip press unit and the second chip press unit respectively comprise three oil supplementing tanks which are arranged from front to back, the three oil supplementing tanks 15 of the first chip press unit form a left Fang Buyou tank group, the three oil supplementing tanks 15 of the second chip press unit form a right oil supplementing tank group, and the left Fang Buyou tank group and the right oil supplementing tank group are arranged left and right; the oil replenishing boxes on the two sides of the left oil replenishing box group are communicated with the oil replenishing box on the center of the left Fang Buyou box group through a left communication pipe 11 a; adjacent oil replenishing boxes in the right oil replenishing box group are communicated through a right communication pipe 12 a; the first chip press unit and the second chip press unit comprise three oil tanks 1 which are arranged from front to back, three oil supplementing tanks 15 of the first chip press unit form a front oil tank group, three oil supplementing tanks 15 of the second chip press unit form a rear oil tank group, and the front oil tank group and the rear oil tank group are arranged front to back; the oil supplementing box in the center of the left oil supplementing box group is communicated with the oil box in the center of the rear oil box group through a first total oil return pipe 21; the flow rate of the first total oil return pipe 21 is three times that of the left communication pipe 11 a; the oil supplementing box at the forefront in the right oil supplementing box group is communicated with the oil box at the rearmost side in the front oil box group through a second main oil return pipe 22; the flow rate of the second total oil return pipe 22 is three times that of the right communication pipe 12 a.
Compared with the traditional three oil return pipes, the pipeline layout is reduced, and the flow of the single total oil return pipe is consistent with the flow of the traditional three oil return pipes, but the tiling size of the single total oil return pipe of the patent is only 3 (1/2) of the tiling size of the single oil return pipe.
The lowest part of the left side communication pipe, the lowest part of the right side communication pipe, the lowest part of the first total oil return pipe and the second total oil return pipe are flush.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (7)
1. The hydraulic system of the large chip press comprises an oil pump, an oil tank, a pushing oil cylinder and a charging oil cylinder, wherein an outlet of the oil pump is connected with an inlet end of an oil inlet main oil path, and a pressure regulating valve group is arranged on the oil inlet main oil path;
the rodless cavity of the pushing oil cylinder and the rodless cavity of the charging oil cylinder are connected with an oil inlet main oil way through a first two-way cartridge valve;
the rodless cavity of the pushing oil cylinder and the rodless cavity of the charging oil cylinder are communicated with an oil tank through a second two-way cartridge valve;
the rod cavity of the pushing oil cylinder and the rod cavity of the charging oil cylinder are communicated with a main oil way, a one-way sequence valve is arranged between the rod cavity of the charging oil cylinder and the main oil way, a port b of the one-way sequence valve is connected with the main oil way, and a port a of the one-way sequence valve is connected with the rod cavity of the charging oil cylinder; the flow guiding direction of the one-way valve of the one-way sequence valve is from the port b to the port a;
the main oil way is connected with an oil inlet main oil way through a third two-way cartridge valve;
the total oil way is communicated with the oil tank through a fourth two-way cartridge valve;
the oil inlet main oil way is provided with a pressure gauge and a pressure transmitter, and the pressure gauge and the pressure transmitter are arranged between the pressure regulating valve group and the oil pump.
2. The hydraulic system of a large chip press according to claim 1, wherein: the device also comprises a compound cylinder for pressing materials, wherein the compound cylinder comprises a piston cylinder and a plunger cylinder; the piston of the piston cylinder is provided with a cavity for accommodating the plunger, the piston of the piston cylinder is used as a cylinder body of the plunger cylinder, the plunger of the plunger cylinder is fixed on the cylinder body of the piston cylinder, and the plunger of the plunger cylinder and the piston of the piston cylinder enclose an oil storage cavity of the plunger cylinder;
the rod cavity of the piston cylinder is communicated with an oil inlet main oil way through a fifth cartridge valve, and the rod cavity of the piston cylinder is communicated with the oil tank through a sixth cartridge valve;
the oil storage cavity is communicated with the oil inlet main oil way through a seventh cartridge valve;
the rodless cavity of the piston cylinder is connected with an oil supplementing tank through a hydraulic control filling valve, and the oil supplementing tank is communicated with the oil tank;
and a control oil port of the hydraulic control charging valve is connected with the oil pump through an electromagnetic reversing valve.
3. A hydraulic system of a large chip press according to claim 2, characterized in that: the seventh cartridge valve comprises a three-way plug connector, wherein the three-way plug connector is provided with three oil ports, and the three oil ports are respectively a first oil port positioned on the front surface of a valve core of the three-way plug connector, and two second oil ports and a third oil port positioned on the side surface of the valve core of the three-way plug connector;
the first oil port is connected with an oil inlet main oil way, the second oil port is communicated with the oil storage cavity, and an inserted sequence valve is arranged between the third oil port and the rodless cavity of the piston cylinder.
4. A hydraulic system of a large chip press according to claim 2, characterized in that: the pressure regulating valve group comprises a one-way valve and an eighth two-way cartridge valve, and the inlets of the one-way valve and the eighth two-way cartridge valve are communicated with the outlet of the oil pump;
the one-way valve is arranged between the oil pump and the third two-way cartridge valve;
the eighth two-way cartridge valve is arranged between the oil pump and the oil tank.
5. The hydraulic system of a large chip press according to claim 1, wherein: the oil pumps are provided with an even number, the two oil pumps are oil pump groups, and the two oil pumps of the same oil pump group are in transmission connection with the rotating shaft of the same motor;
the two oil pumps of the same oil pump group are respectively a first oil pump and a second oil pump, and the outlet of the first oil pump is connected with the inlet of the pressure regulating valve group through a one-way valve;
and the outlet of the second oil pump is switched and connected with the inlet of the oil tank and the pressure regulating valve group through a valve group.
6. The hydraulic system of a large chip press according to claim 1, wherein: six chip presses are arranged, the three chip presses are a chip press set, two chip press sets are respectively a first chip press set and a second chip press set;
the first chip press unit and the second chip press unit comprise three oil supplementing boxes which are arranged from front to back, the three oil supplementing boxes of the first chip press unit form a left Fang Buyou box group, the three oil supplementing boxes of the second chip press unit form a right oil supplementing box group, and the left Fang Buyou box group and the right oil supplementing box group are arranged left and right;
the oil replenishing boxes on the two sides of the left oil replenishing box group are communicated with the oil replenishing box on the center of the left Fang Buyou box group through a left communication pipe;
adjacent oil replenishing boxes in the right oil replenishing box group are communicated through a right communication pipe;
the first chip press unit and the second chip press unit comprise three oil tanks which are arranged from front to back, the three oil supplementing tanks of the first chip press unit form a front oil tank group, the three oil supplementing tanks of the second chip press unit form a rear oil tank group, and the front oil tank group and the rear oil tank group are arranged front and back;
the oil supplementing box in the center of the left oil supplementing box group is communicated with the oil box in the center of the rear oil box group through a first total oil return pipe; the flow of the first total oil return pipe is three times of the flow of the left communication pipe;
the oil supplementing box at the forefront in the right oil supplementing box group is communicated with the oil box at the rearmost position in the front oil box group through a second main oil return pipe; the flow of the second total oil return pipe is three times of the flow of the right communication pipe.
7. The hydraulic system of a large chip press of claim 6, wherein: the lowest part of the left side communication pipe, the lowest part of the right side communication pipe, the first total oil return pipe and the lowest part of the second total oil return pipe are flush.
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| CN112519295B (en) * | 2020-10-20 | 2022-08-23 | 江苏华宏科技股份有限公司 | Waste metal automatic packaging flow production line and packaging method thereof |
| CN113757205B (en) * | 2021-10-18 | 2024-08-02 | 山东泰丰智能控制股份有限公司 | Hydraulic control system of metal chip forming machine |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1054849A (en) * | 1975-11-28 | 1979-05-22 | Officine Vezzani S.P.A. | Scrap metal compacting press |
| DE3638621A1 (en) * | 1986-11-12 | 1988-05-26 | Lindemann Maschfab Gmbh | POSITION MONITORING DEVICE |
| US5458049A (en) * | 1994-05-31 | 1995-10-17 | Dana Corporation | Two-stage externally adjustable control valve |
| US5533334A (en) * | 1992-04-08 | 1996-07-09 | Kabushiki Kaisha Komatsu Seisakusho | Pressurized fluid supply system |
| DE102005017878B3 (en) * | 2005-04-19 | 2006-09-28 | Krauss-Maffei Kunststofftechnik Gmbh | Hydraulic mold locking unit for injection molding machines and presses, has an upper die platen moved by hydraulic cylinders, one with a double-action piston controlled by a proportional valve in the pump system |
| CN101249730A (en) * | 2008-03-24 | 2008-08-27 | 中南大学 | Hydraulic control system of multi-point driving large hydraulic press |
| CN201144909Y (en) * | 2007-12-29 | 2008-11-05 | 江苏国力锻压机床有限公司 | Hydraulic control system of hydraulic machine |
| DE102009056546A1 (en) * | 2009-12-03 | 2011-06-09 | Ruf Gmbh & Co. Kg | briquetting |
| CN102101364A (en) * | 2010-12-21 | 2011-06-22 | 江阴市瑞丰液压机械有限公司 | Loose metal litter briquetting machine and processing method |
| CN103448293A (en) * | 2013-03-09 | 2013-12-18 | 赣州虔东稀土集团股份有限公司 | Powder press hydraulic system |
| CN103846490A (en) * | 2012-11-30 | 2014-06-11 | 无锡市协新气动有限公司 | Plate hydraulic shearing machine system |
| CN105545843A (en) * | 2016-02-14 | 2016-05-04 | 秦皇岛燕大一华机电工程技术研究院有限公司 | Hydraulic control system of self-propelled hydraulic power traction vehicle |
| CN105799201A (en) * | 2015-12-30 | 2016-07-27 | 徐州工业职业技术学院 | Parallel independent metal scrap classifying and briquetting machine and hydraulic control system thereof |
| CN106122135A (en) * | 2016-08-31 | 2016-11-16 | 江苏高德液压机械有限公司 | The hydraulic control system of scrap bundler |
| CN107127996A (en) * | 2017-07-03 | 2017-09-05 | 苏州帝瀚环保科技股份有限公司 | Metal filings briquetting processing unit with hydraulic system |
| CN107344425A (en) * | 2016-05-04 | 2017-11-14 | 叶明坦 | A kind of fully-automatic biomass fuel accelerates supercharging forming machine and its control method |
| CN108953259A (en) * | 2018-09-27 | 2018-12-07 | 湖北力帝机床股份有限公司 | Prebreaker parallel-connection type hydraulic pressure control system and control method |
| CN209781318U (en) * | 2018-12-28 | 2019-12-13 | 江苏华宏科技股份有限公司 | hydraulic system of large scrap press |
-
2018
- 2018-12-28 CN CN201811621185.2A patent/CN109538551B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1054849A (en) * | 1975-11-28 | 1979-05-22 | Officine Vezzani S.P.A. | Scrap metal compacting press |
| DE3638621A1 (en) * | 1986-11-12 | 1988-05-26 | Lindemann Maschfab Gmbh | POSITION MONITORING DEVICE |
| US5533334A (en) * | 1992-04-08 | 1996-07-09 | Kabushiki Kaisha Komatsu Seisakusho | Pressurized fluid supply system |
| US5458049A (en) * | 1994-05-31 | 1995-10-17 | Dana Corporation | Two-stage externally adjustable control valve |
| DE102005017878B3 (en) * | 2005-04-19 | 2006-09-28 | Krauss-Maffei Kunststofftechnik Gmbh | Hydraulic mold locking unit for injection molding machines and presses, has an upper die platen moved by hydraulic cylinders, one with a double-action piston controlled by a proportional valve in the pump system |
| CN201144909Y (en) * | 2007-12-29 | 2008-11-05 | 江苏国力锻压机床有限公司 | Hydraulic control system of hydraulic machine |
| CN101249730A (en) * | 2008-03-24 | 2008-08-27 | 中南大学 | Hydraulic control system of multi-point driving large hydraulic press |
| DE102009056546A1 (en) * | 2009-12-03 | 2011-06-09 | Ruf Gmbh & Co. Kg | briquetting |
| CN102101364A (en) * | 2010-12-21 | 2011-06-22 | 江阴市瑞丰液压机械有限公司 | Loose metal litter briquetting machine and processing method |
| CN103846490A (en) * | 2012-11-30 | 2014-06-11 | 无锡市协新气动有限公司 | Plate hydraulic shearing machine system |
| CN103448293A (en) * | 2013-03-09 | 2013-12-18 | 赣州虔东稀土集团股份有限公司 | Powder press hydraulic system |
| CN105799201A (en) * | 2015-12-30 | 2016-07-27 | 徐州工业职业技术学院 | Parallel independent metal scrap classifying and briquetting machine and hydraulic control system thereof |
| CN105545843A (en) * | 2016-02-14 | 2016-05-04 | 秦皇岛燕大一华机电工程技术研究院有限公司 | Hydraulic control system of self-propelled hydraulic power traction vehicle |
| CN107344425A (en) * | 2016-05-04 | 2017-11-14 | 叶明坦 | A kind of fully-automatic biomass fuel accelerates supercharging forming machine and its control method |
| CN106122135A (en) * | 2016-08-31 | 2016-11-16 | 江苏高德液压机械有限公司 | The hydraulic control system of scrap bundler |
| CN107127996A (en) * | 2017-07-03 | 2017-09-05 | 苏州帝瀚环保科技股份有限公司 | Metal filings briquetting processing unit with hydraulic system |
| CN108953259A (en) * | 2018-09-27 | 2018-12-07 | 湖北力帝机床股份有限公司 | Prebreaker parallel-connection type hydraulic pressure control system and control method |
| CN209781318U (en) * | 2018-12-28 | 2019-12-13 | 江苏华宏科技股份有限公司 | hydraulic system of large scrap press |
Non-Patent Citations (2)
| Title |
|---|
| 《基于PLC的金属屑压块液压机控制系统的设计》;李青虹;《江西理工大学学报》;第32卷(第5期);第42-45页 * |
| 《平台式垃圾压块机液压系统的可靠性研究》;王猛等;《机床与液压》;第第42卷卷(第第15期期);第194-196页 * |
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