CN105522749A - Sub-manifold block with adjustable pressing speed of hydraulic machine and speed adjusting method - Google Patents
Sub-manifold block with adjustable pressing speed of hydraulic machine and speed adjusting method Download PDFInfo
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- CN105522749A CN105522749A CN201510851283.5A CN201510851283A CN105522749A CN 105522749 A CN105522749 A CN 105522749A CN 201510851283 A CN201510851283 A CN 201510851283A CN 105522749 A CN105522749 A CN 105522749A
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Abstract
The invention discloses a sub-manifold block with adjustable pressing speed of a hydraulic machine, which comprises a manifold block body and a first cartridge valve, a second cartridge valve, a first oil pressure sensor, a second oil pressure sensor, a first solenoid directional valve and a second solenoid directional valve which are arranged on the manifold block body. A speed adjusting method disclosed by the invention comprises the following steps: 1. quickly descending a sliding block; 2. descending the sliding block at intermediate speed; 3. feeding the sliding block; 4. stopping descending of the sliding block; 5. when product required pressure is lower than one-third of the nominal pressure of the hydraulic machine, starting the high-speed procedure in step 1; and 6. when the product required pressure is lower than two-thirds of the nominal pressure of the hydraulic machine, starting the intermediate-speed procedure in step 2. According to the invention, the structure of the sub-manifold block is compact, the speed adjusting method is convenient and reliable, and the descending speed of the sliding block can be automatically adjusted according to different deformation forces required during press working, thus improving production efficiency and lowering the user cost of equipment. The use is very convenient, and energy consumption is reduced.
Description
Technical field
The present invention relates to a kind of hydraulic control system of hydraulic press, especially a kind of point oil path block and speed regulating method of hydraulic control machine slide block down speed, belong to technical field of forging and pressing equipment.
Background technology
Modern hydraulic machine adopts four post three beam type or tower structures, and the auxiliary oil cylinder of master cylinder and both sides is disposed side by side on entablature, and master cylinder is plunger cylinder, and auxiliary oil cylinder is piston oil-cylinder, auxiliary oil cylinder except for except loading, also for the plunger backhaul of master cylinder.The output of existing triplex structure hydraulic press working connection block connects a point oil clot by flowline, two outputs of oil clot are divided to enter the epicoele of master cylinder and two auxiliary oil cylinders respectively, the plunger of master cylinder and the piston rod of auxiliary oil cylinder promote slide block down, are completed the formed machining of workpiece by mould.And hydraulic press is used for the little operation of the loading forces such as Sheet stretch shaping or hot forming.In the process of stretch forming or hot forming etc., the load when patrix is just pressed onto workpiece is lower, therefore loading force required when slide block presses down is less.Pressure oil due to working connection block enters the epicoele of master cylinder and two auxiliary oil cylinders respectively, the descending pressing speed of slide block still keeps normality, in order to enhance productivity, the lower needs of load accelerate further slide block press down speed time, only have the flow by increasing separate unit hydraulic pump or increase hydraulic pump quantity, the object that working connection flow reaches acceleration could be increased.Thus also need strengthen hydraulic pump drive power of motor or increase drive motors quantity, increase the latus rectum of control valve specification and pipeline, cause increasing equipment cost and use cost.
Summary of the invention
The object of this invention is to provide a kind of hydraulic press and press down speed adjustable point oil path block and speed regulating method, can automatically adjust slide block down speed according to different deformation force required in workpiece pressing process, enhance productivity, reduce use cost.
The present invention is achieved by the following technical programs:
A kind of hydraulic press presses down the adjustable point oil path block of speed, comprise oil path block block and be contained in the first inserted valve on oil path block block, second inserted valve, first oil pressure sensor, second oil pressure sensor, first solenoid directional control valve and the second solenoid directional control valve, the working connection output of working connection block respectively with the first inserted valve input, second inserted valve input is connected, second inserted valve output is connected with master cylinder epicoele, first inserted valve output is connected with two auxiliary oil cylinder epicoeles respectively, be connected with the auxiliary oil cylinder output of working connection block after the oil circuit of two auxiliary oil cylinder cavity of resorptions converges, first inserted valve control end is connected with the first solenoid directional control valve output, second inserted valve control end is connected with the second solenoid directional control valve output, first solenoid directional control valve input is connected with the control output end of working connection block after being connected with the second solenoid directional control valve input.
Hydraulic press presses down a speed regulating method for the adjustable point oil path block of speed, comprises the following steps:
1) slide block fast downlink
First solenoid directional control valve obtains electric, and its spool moves to upper; Second solenoid directional control valve dead electricity, its spool moves to bottom, and the first inserted valve spool is closed, and the second inserted valve spool is opened; The pressure oil exported from working connection output all inputs master cylinder epicoele by the second inserted valve, master cylinder plunger promotes slide block fast downlink, it is descending with master cylinder plunger that two auxiliary oil cylinder piston rods are in servo-actuated state, the oil pressure of two auxiliary oil cylinder upper cavity pressure oil reduces, the auxiliary oil cylinder prefill valve be connected with auxiliary oil cylinder epicoele is opened auxiliary oil cylinder epicoele oil-filled, namely master cylinder leads to pressure oil to load two auxiliary oil cylinder topping ups servo-actuated, promotes slide block fast downlink;
2) slide block middling speed is descending
The mould descending beginning pressing component of slipper push on the downside of it, system oil pressure raises; After system oil pressure is increased to the oil pressure of the first oil pressure sensor setting, the second solenoid directional control valve obtains electric, and its spool moves to upper; First solenoid directional control valve dead electricity, its spool moves to bottom; First inserted valve spool is opened, and the pressure oil exported from working connection output all inputs two auxiliary oil cylinder epicoeles by the first inserted valve, and two auxiliary oil cylinder piston-rod lower end promotion slide blocks are descending with the speed middling speed lower than step 1); It is descending with two auxiliary oil cylinder piston rods that master cylinder plunger is in servo-actuated state, the oil pressure of master cylinder upper cavity pressure oil reduces, the master cylinder prefill valve be connected with master cylinder epicoele is opened master cylinder epicoele oil-filled, namely two auxiliary oil cylinders lead to pressure oil to load master cylinder topping up servo-actuated, promote slide block middling speed descending;
3) slide block work is entered
The mould descending continuation pressing component of slipper push on the downside of it, system oil pressure constantly raises; After system oil pressure is increased to the oil pressure of the second oil pressure sensor setting, master cylinder prefill valve and auxiliary oil cylinder prefill valve are all closed, the first solenoid directional control valve and the equal dead electricity of the second solenoid directional control valve, and corresponding spool all moves to upper; First inserted valve spool and the second inserted valve spool are all opened, and the pressure oil exported from working connection output enters master cylinder epicoele and two auxiliary oil cylinder epicoeles respectively, and slide block completes at a slow speed the compacting to workpiece with work speed;
4) slide block stops descending
First solenoid directional control valve and the second solenoid directional control valve all electric, corresponding spool all moves to upper; First inserted valve spool and the second inserted valve spool are all closed, and master cylinder plunger and two auxiliary oil cylinder piston rods all stop mobile, until pressurize terminates slide block backhaul complete a pressure processing;
5) pressure is less than hydraulic press nominal pressure three/for the moment needed for the press worked product, start high-speed procedure press worked product, pressure processing is carried out according to the program of step 1), namely master cylinder leads to pressure oil and loads the servo-actuated mode of two auxiliary oil cylinder topping ups until complete pressure processing, slide block stops descending rear master cylinder pressurize to terminate off-load, and slide block backhaul has stopped a pressure processing;
6) when pressure needed for press worked product is less than hydraulic press nominal pressure 2/3rds, start middling speed programmed pressure converted products, according to step 2) program carry out pressure processing, namely two auxiliary oil cylinders lead to the servo-actuated mode of pressure oil loading master cylinder topping up until complete pressure processing, slide block stops descending rear master cylinder pressurize to terminate off-load, and slide block backhaul has stopped a pressure processing.
Object of the present invention can also be realized further by following technical measures.
Aforesaid hydraulic press presses down the adjustable point oil path block of speed, and wherein said first inserted valve output is other connects the first oil pressure sensor, and the second inserted valve output is other connects the second oil pressure sensor.
Aforesaid hydraulic press presses down the adjustable point oil path block of speed, and wherein said first solenoid directional control valve and the second solenoid directional control valve are two four-way electromagnetic reversing valves.
Aforesaid hydraulic press presses down the adjustable point oil path block of speed, and the adjustable control oil pressure range of wherein said first oil pressure sensor and the second oil pressure sensor is 10MPa ~ 25MPa; The range of flow of described first inserted valve and the second inserted valve is 450 ~ 500l/min.
Hydraulic press of the present invention presses down the adjustable point oil path block compact conformation of speed, speed regulating method is convenient and reliable, by the oil pressure map that two oil pressure sensors are different, start corresponding solenoid directional control valve control the unlatching of corresponding inserted valve spool or close, realize master cylinder and lead to pressure oil loading, servo-actuated or two auxiliary oil cylinders of two auxiliary oil cylinder topping ups lead to pressure oil and load, the F.F. that the servo-actuated or master cylinder of master cylinder topping up and two all logical pressure oil of auxiliary oil cylinder load, middling speed and work enter three kinds of load modes, thus automatically adjust slide block down speed according to different deformation force required in pressing process, do not need need strengthen hydraulic pump drive power of motor or increase drive motors quantity, increase the latus rectum of control valve model and pipeline.Improve production efficiency, reduce the use cost of equipment.The present invention also can set up setting knob on the control panel, can according to the difference of pressure size needed for press worked product, setting knob is screwed into corresponding master cylinder and leads to that pressure oil loads, two auxiliary oil cylinder topping ups are servo-actuated or two auxiliary oil cylinders lead to the mode that pressure oil loads, load downstream rate to obtain required slide block.
Advantage and disadvantage of the present invention, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below, these embodiments, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, the first inserted valve 1 that the present invention includes oil path block block 10 and be contained on oil path block block 10, second inserted valve 2, first oil pressure sensor 3, second oil pressure sensor 4, first solenoid directional control valve 5 and the second solenoid directional control valve 6, the working connection output 201 of working connection block 20 respectively with the first inserted valve input 11, second inserted valve input 21 is connected, second inserted valve output 22 is connected with master cylinder 7 epicoele, first inserted valve output 12 is connected with two auxiliary oil cylinder 8 epicoeles respectively, the auxiliary oil cylinder output 202 that two auxiliary oil cylinder 8 cavity of resorptions are corresponding with working connection block 20 is respectively connected, first inserted valve control end 13 is connected with the first solenoid directional control valve output 52, second inserted valve control end 23 is connected with the second solenoid directional control valve output 62, be connected with the control output end 203 of working connection block after first solenoid directional control valve input 51 is connected with the second solenoid directional control valve input 61.Other first oil pressure sensor 3, second inserted valve output 22 side that connects of first inserted valve output 12 connects the second oil pressure sensor 4.
First solenoid directional control valve 5 and the second solenoid directional control valve 6 are two four-way electromagnetic reversing valves.The adjustable control oil pressure range of the first oil pressure sensor 3 and the second oil pressure sensor 4 is 10MPa ~ 25MPa; The range of flow of the first inserted valve 1 and the second inserted valve 2 is 450 ~ 500l/min.
Hydraulic press presses down the speed regulating method of the adjustable point oil path block of speed, comprises the following steps:
1) slide block 30 fast downlink
First solenoid directional control valve 5 obtains electric, and its spool moves to upper; Second solenoid directional control valve 6 dead electricity, its spool moves to bottom, and the first inserted valve 1 spool is closed, and the second inserted valve 2 spool is opened; The pressure oil exported from working connection output 201 all inputs master cylinder 7 epicoele by the second inserted valve 2, master cylinder plunger 71 promotes slide block 30 fast downlink, it is descending with master cylinder plunger 71 that two auxiliary oil cylinder piston rods 81 are in servo-actuated state, the oil pressure of two auxiliary oil cylinder 8 upper cavity pressure oil reduces, the auxiliary oil cylinder prefill valve 40 be connected with auxiliary oil cylinder 8 epicoele is opened auxiliary oil cylinder 8 epicoele oil-filled, namely master cylinder 7 leads to pressure oil loading, two auxiliary oil cylinder 8 topping ups are servo-actuated, promotes slide block 30 fast downlink.If master cylinder 7 and two same cylinder diameters of auxiliary oil cylinder 80, then slide block 30 fast downlink speed is 3 times of existing hydraulic press.
2) slide block 30 middling speed is descending
Slide block 30 promotes the descending beginning pressing component of mould on the downside of it, and system oil pressure raises; After system oil pressure is increased to the oil pressure of the first oil pressure sensor 3 setting, the second solenoid directional control valve 6 obtains electric, and its spool moves to upper; First solenoid directional control valve 5 dead electricity, its spool moves to bottom; First inserted valve 1 spool is opened, and the pressure oil exported from working connection output 201 all inputs two auxiliary oil cylinder 8 epicoeles by the first inserted valve 1, and two auxiliary oil cylinder piston rod 81 lower end promotion slide blocks 30 are descending with the speed middling speed lower than step 1).It is descending with two auxiliary oil cylinder piston rods 81 that master cylinder plunger 71 is in servo-actuated state, the oil pressure of master cylinder 7 upper cavity pressure oil reduces, the master cylinder prefill valve 50 be connected with master cylinder epicoele is opened master cylinder 7 epicoele oil-filled, namely two auxiliary oil cylinders 8 lead to pressure oil to load master cylinder 7 topping up servo-actuated, promote slide block 30 middling speed descending.If master cylinder 7 and two same cylinder diameters of auxiliary oil cylinder 8, then slide block 30 fast downlink speed is 1.5 times of existing hydraulic press.
3) slide block 30 work is entered
Slide block 30 promotes the descending continuation pressing component of mould on the downside of it, and system oil pressure constantly raises; After system oil pressure is increased to the oil pressure of the second oil pressure sensor 4 setting, master cylinder prefill valve 50 and auxiliary oil cylinder prefill valve 40 are all closed, the first solenoid directional control valve 3 and the second solenoid directional control valve 4 all dead electricity, and corresponding spool all moves to upper; First inserted valve 1 spool and the second inserted valve 2 spool are all opened, and the pressure oil exported from working connection output 201 enters master cylinder 7 epicoele and two auxiliary oil cylinder 8 epicoeles respectively, and slide block 30 completes at a slow speed the compacting to workpiece with work speed.
4) slide block 30 stops descending
First solenoid directional control valve 5 and the second solenoid directional control valve 6 all electric, corresponding spool all moves to upper; First inserted valve spool and the second inserted valve spool are all closed, and master cylinder plunger 71 and two auxiliary oil cylinder piston rods 81 all stop mobile, until pressurize terminates slide block 30 backhaul complete a pressure processing;
5) pressure is less than hydraulic press nominal pressure three/for the moment needed for the press worked product, setting knob on control panel is screwed into master cylinder 7 and leads to the position that pressure oil loads, two auxiliary oil cylinder 8 topping ups are servo-actuated, start high-speed procedure press worked product, pressure processing is carried out according to the program of step 1), namely master cylinder 7 leads to pressure oil and loads the servo-actuated mode of two auxiliary oil cylinder 8 topping ups until complete pressure processing, slide block 30 stops the pressurize of descending rear master cylinder 7 to terminate off-load, and slide block 30 backhaul has stopped a pressure processing;
6) when pressure needed for press worked product is less than hydraulic press nominal pressure 2/3rds, setting knob on control panel is screwed into the position that two auxiliary oil cylinder 8 pressure oils load, master cylinder 7 topping up is servo-actuated, start middling speed programmed pressure converted products, according to step 2) program carry out pressure processing, namely two auxiliary oil cylinders 8 lead to the servo-actuated mode of pressure oil loading master cylinder 7 topping up until complete pressure processing, slide block 30 stops the pressurize of descending rear master cylinder 7 to terminate off-load, and slide block 30 backhaul has stopped a pressure processing.
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of application claims.
Claims (6)
1. a hydraulic press presses down the adjustable point oil path block of speed, it is characterized in that, comprise oil path block block and be contained in the first inserted valve on oil path block block, second inserted valve, first oil pressure sensor, second oil pressure sensor, first solenoid directional control valve and the second solenoid directional control valve, the working connection output of working connection block respectively with the first inserted valve input, second inserted valve input is connected, second inserted valve output is connected with master cylinder epicoele, first inserted valve output is connected with two auxiliary oil cylinder epicoeles respectively, the auxiliary oil cylinder output that two auxiliary oil cylinder cavity of resorptions are corresponding with working connection block is respectively connected, first inserted valve control end is connected with the first solenoid directional control valve output, second inserted valve control end is connected with the second solenoid directional control valve output, first solenoid directional control valve input is connected with the control output end of working connection block after being connected with the second solenoid directional control valve input.
2. hydraulic press as claimed in claim 1 presses down the adjustable point oil path block of speed, it is characterized in that: described first inserted valve output is other connects the first oil pressure sensor, and the second inserted valve output is other connects the second oil pressure sensor.
3. hydraulic press as claimed in claim 1 presses down the adjustable point oil path block of speed, it is characterized in that: described first solenoid directional control valve and the second solenoid directional control valve are two four-way electromagnetic reversing valves.
4. hydraulic press as claimed in claim 1 presses down the adjustable point oil path block of speed, it is characterized in that: the adjustable control oil pressure range of described first oil pressure sensor and the second oil pressure sensor is 10MPa ~ 25MPa.
5. hydraulic press as claimed in claim 1 presses down the adjustable point oil path block of speed, it is characterized in that: the range of flow of described first inserted valve and the second inserted valve is 450 ~ 500l/min.
6. hydraulic press as claimed in claim 1 presses down a speed regulating method for the adjustable point oil path block of speed, it is characterized in that: comprise the following steps:
1) slide block fast downlink
First solenoid directional control valve obtains electric, and its spool moves to upper; Second solenoid directional control valve dead electricity, its spool moves to bottom, and the first inserted valve spool is closed, and the second inserted valve spool is opened; The pressure oil exported from working connection output all inputs master cylinder epicoele by the second inserted valve, master cylinder plunger promotes slide block fast downlink, it is descending with master cylinder plunger that two auxiliary oil cylinder piston rods are in servo-actuated state, the oil pressure of two auxiliary oil cylinder upper cavity pressure oil reduces, the auxiliary oil cylinder prefill valve be connected with auxiliary oil cylinder epicoele is opened auxiliary oil cylinder epicoele oil-filled, namely master cylinder leads to pressure oil to load two auxiliary oil cylinder topping ups servo-actuated, promotes slide block fast downlink;
2) slide block middling speed is descending
The mould descending beginning pressing component of slipper push on the downside of it, system oil pressure raises; After system oil pressure is increased to the oil pressure of the first oil pressure sensor setting, the second solenoid directional control valve obtains electric, and its spool moves to upper; First solenoid directional control valve dead electricity, its spool moves to bottom; First inserted valve spool is opened, and the pressure oil exported from working connection output all inputs two auxiliary oil cylinder epicoeles by the first inserted valve, and two auxiliary oil cylinder piston-rod lower end promotion slide blocks are descending with the speed middling speed lower than step 1); It is descending with two auxiliary oil cylinder piston rods that master cylinder plunger is in servo-actuated state, the oil pressure of master cylinder upper cavity pressure oil reduces, the master cylinder prefill valve be connected with master cylinder epicoele is opened master cylinder epicoele oil-filled, namely two auxiliary oil cylinders lead to pressure oil to load master cylinder topping up servo-actuated, promote slide block middling speed descending;
3) slide block work is entered
The mould descending continuation pressing component of slipper push on the downside of it, system oil pressure constantly raises; After system oil pressure is increased to the oil pressure of the second oil pressure sensor setting, master cylinder prefill valve and auxiliary oil cylinder prefill valve are all closed, the first solenoid directional control valve and the equal dead electricity of the second solenoid directional control valve, and corresponding spool all moves to upper; First inserted valve spool and the second inserted valve spool are all opened, and the pressure oil exported from working connection output enters master cylinder epicoele and two auxiliary oil cylinder epicoeles respectively, and slide block completes at a slow speed the compacting to workpiece with work speed;
4) slide block stops descending
First solenoid directional control valve and the second solenoid directional control valve all electric, corresponding spool all moves to upper; First inserted valve spool and the second inserted valve spool are all closed, and master cylinder plunger and two auxiliary oil cylinder piston rods all stop mobile, until pressurize terminates slide block backhaul complete a pressure processing;
5) pressure is less than hydraulic press nominal pressure three/for the moment needed for the press worked product, start high-speed procedure press worked product, pressure processing is carried out according to the program of step 1), namely master cylinder leads to pressure oil and loads the servo-actuated mode of two auxiliary oil cylinder topping ups until complete pressure processing, slide block stops descending rear master cylinder pressurize to terminate off-load, and slide block backhaul has stopped a pressure processing;
6) when pressure needed for press worked product is less than hydraulic press nominal pressure 2/3rds, start middling speed programmed pressure converted products, according to step 2) program carry out pressure processing, namely two auxiliary oil cylinders lead to the servo-actuated mode of pressure oil loading master cylinder topping up until complete pressure processing, slide block stops descending rear master cylinder pressurize to terminate off-load, and slide block backhaul has stopped a pressure processing.
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| CN201510851283.5A CN105522749B (en) | 2015-11-30 | 2015-11-30 | Hydraulic press pushes adjustable point of oil path block of speed and speed regulating method |
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| CN105522749B CN105522749B (en) | 2017-10-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627883A (en) * | 2017-03-21 | 2018-10-09 | 德律科技股份有限公司 | Obstacle detection method and press anti-collision method |
| CN109910336A (en) * | 2018-12-29 | 2019-06-21 | 合肥合锻智能制造股份有限公司 | High beat hydraulic press |
| CN113634809A (en) * | 2021-10-13 | 2021-11-12 | 山东泰丰智能控制股份有限公司 | Control system for solving cutter clamping fault |
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| CN205149010U (en) * | 2015-11-30 | 2016-04-13 | 沃得精机(中国)有限公司 | Hydraulic press pushes down speed adjustable and divides oil circuit piece |
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| SU1003469A1 (en) * | 1981-04-16 | 1987-12-23 | Экспериментальный научно-исследовательский институт кузнечно-прессового машиностроения | Hydraulic press control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108627883A (en) * | 2017-03-21 | 2018-10-09 | 德律科技股份有限公司 | Obstacle detection method and press anti-collision method |
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| CN113634809A (en) * | 2021-10-13 | 2021-11-12 | 山东泰丰智能控制股份有限公司 | Control system for solving cutter clamping fault |
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