CN205651682U - Hydraulic pressure differential type mechanical press - Google Patents
Hydraulic pressure differential type mechanical press Download PDFInfo
- Publication number
- CN205651682U CN205651682U CN201620357034.0U CN201620357034U CN205651682U CN 205651682 U CN205651682 U CN 205651682U CN 201620357034 U CN201620357034 U CN 201620357034U CN 205651682 U CN205651682 U CN 205651682U
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- cylinder
- leather bag
- proportional
- pressure
- slide block
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Abstract
The utility model discloses a hydraulic pressure differential type mechanical press, it is on ordinary mechanical press's basis, has increased hydraulic pressure differential system, this system includes support, synchronous hydro -cylinder, proportion hydro -cylinder, pressure sensor, leather bag accumulator, magenetic exchange valve, oil feeder and oil tank, the support mounting on the slider and with synchronous hydro -cylinder sliding contact, synchronous hydro -cylinder sets up in the frame and links to each other with the lumen of proportion hydro -cylinder through magenetic exchange valve, the epicoele of proportion hydro -cylinder and the overload protection hydro -cylinder links to each other and link to each other with leather bag accumulator no. 2 through pressure sensor, the cavity of resorption of proportion hydro -cylinder are connected with magenetic exchange valve and proportional pressure valve and one continuous with the leather bag accumulator, the leather bag accumulator pass through oil feeder and oil tank and link to each other, through this hydraulic pressure differential system functioning speed value of adjusting block as required to realize mechanical press slider descending purpose of speed reduction and bottom dead centre pressurize function, it is low to have improved work efficiency and product quality and product cost.
Description
Technical field
This utility model belongs to forging technology field, is specifically related to a kind of hydraulic pressure difference dynamic formula punching machine.
Background technology
Traditional mechanical forcing press all uses toggle (as shown in Figure 1), is made up of motor, flywheel, clutch, crank axle, connecting rod, slide block, overcurrent protection oil cylinder and frame.Flywheel is constant revolution under the drive of motor, when forcing press needs work, clutch engages, the rotary motion of flywheel is passed to crank axle and makes it rotate, the rotary motion of crank axle makes it move along a straight line up and down by connecting rod band movable slider, slide block complete the punching press to workpiece or drawing work.During this, think that flywheel is that constant speed rotates, therefore the period of motion of slide block is constant, that is the slide block speed corresponding to each position in the range of upper and lower stroke is constant and determine, this also one of feature having fully demonstrated punching machine, that is, there is higher work efficiency.But, punching machine when making punching stretch technique to workpiece, also reflect and slide block movement speed is changed at particular job section needs the requirement slowed down, and slide block performs the requirement of pause pressure holding function at bottom dead centre, in order that improving high finished product rate and the high-quality of product.Therefore, professional person requires Design Imported multi-bar mechanical press and servounit forcing press, the requirement that when the most substantially can meet drawing process, slide block movement velocity variations slows down for this.But there are some important problems:
1. equipment precision requirement is high, processing technology is complicated；
2. the ram speed change amount of slowing down is unadjustable；
The most expensive, user is not easily accepted by.
Summary of the invention
The purpose of this utility model is to solve traditional mechanical press equipment required precision height, processing technology complexity；The ram speed change amount of slowing down is unadjustable；And the problem such as involve great expense, for this, the hydraulic pressure difference dynamic formula punching machine that this utility model provides a kind of simple in construction, performance is good, easy to process, cheap, it is on the basis of traditional mechanical forcing press, add hydraulic differential system, complete and meet punching machine well in the speed of specific trip segment and regulate change.
The concrete technical scheme that this utility model uses is as follows:
nullA kind of hydraulic pressure difference dynamic formula punching machine，Including motor、Flywheel、Clutch、Crank axle、Connecting rod、Slide block、Overcurrent protection oil cylinder and frame，Motor is connected with flywheel，Flywheel is connected with crank axle by clutch，Crank axle is in transmission connection with slide block by connecting rod，Described connecting rod is connected with overcurrent protection oil cylinder，Overcurrent protection oil cylinder is positioned at slide block，Slide block is arranged in frame，Connect on described overcurrent protection oil cylinder and have hydraulic differential system，Described hydraulic differential system includes support、Synchronous fuel tank、Proportional cylinder、Pressure transducer、Leather bag accumulator、Solenoid directional control valve、Oil feeder and fuel tank，Described support be installed on slide block and with described synchronous fuel tank sliding contact，Synchronous fuel tank is arranged in frame and is connected with the lumen of proportional cylinder by the first solenoid directional control valve，The epicoele of proportional cylinder is connected with overcurrent protection oil cylinder，And the epicoele of proportional cylinder is connected by pressure transducer and the second leather bag accumulator，The cavity of resorption of proportional cylinder is connected with the second solenoid directional control valve and proportional pressure valve in turn，And the cavity of resorption of proportional cylinder and the first body leather bag accumulator are connected，The first described body leather bag accumulator and the second leather bag accumulator are connected with oil feeder by the 3rd solenoid directional control valve，Connect on oil feeder and have fuel tank.
Oil pressure force value in described overcurrent protection oil cylinder is exported to proportional pressure valve in the form of a voltage by pressure transducer.
The second electro connecting pressure gauge, check valve, the 3rd electro connecting pressure gauge, pressure switch one and pressure switch two it is connected with in turn between described pressure transducer and the second leather bag accumulator.
The second described leather bag accumulator is connected with synchronous fuel tank by check valve.
Connect between described the first body leather bag accumulator and the 3rd solenoid directional control valve and have the first electro connecting pressure gauge and check valve.
Check valve is connected between described the second leather bag accumulator and the 3rd solenoid directional control valve.
Being provided with upper piston rod and lower piston rod in described proportional cylinder, the inner chamber of proportional cylinder is divided into epicoele, lumen and cavity of resorption, the piston rod cavity of resorption oil pressure active area of proportional cylinder is more than epicoele oil pressure active area.
Proportionate relationship between the piston rod cavity of resorption oil pressure active area of described synchronous fuel tank, the oil pressure active area in proportional cylinder piston rod upper, middle and lower chamber and overcurrent protection oil cylinder piston rod oil pressure active area determines.
The beneficial effects of the utility model:
1, differential type punching machine provided by the utility model both can keep original efficient work rate of punching machine, and can improve work efficiency and product quality in conjunction with the speed change deceleration of hydraulic press and the bottom dead centre pressure holding function realizing slide block.
2, this utility model can adjust the velocity amplitude of slide block as required.
3, this differential type punching machine product price provided by the utility model is low, letter valency is easily accepted by than high, high in technological content, user.
Accompanying drawing explanation
Below in conjunction with implementing accompanying drawing, the utility model is described in further detail:
Fig. 1 is the structural representation of traditional mechanical forcing press；
Fig. 2 is the structural representation of this utility model a kind of hydraulic pressure difference dynamic formula punching machine.
1-motor, 2-flywheel, 3-clutch, 4-crank axle, 5-connecting rod, 6-slide block, 7-overcurrent protection oil cylinder, 8-frame, 9-support, 10-synchronous fuel tank, 11-check valve, 12-the first solenoid directional control valve, 13-the second solenoid directional control valve, 14-proportional cylinder, 15-proportional pressure valve, 16-the 3rd solenoid directional control valve, 17-the first electro connecting pressure gauge, 18-the second electro connecting pressure gauge, 19-the 3rd electro connecting pressure gauge, 20-pressure transducer, 21-the first leather bag accumulator, 22-the second leather bag accumulator, 23-pressure switch one, 24-pressure switch two, 25-oil feeder, 26-fuel tank.
Detailed description of the invention
Embodiment
1
:
As shown in Figure 1, traditional mechanical forcing press all uses toggle, is made up of motor 1, flywheel 2, clutch 3, crank axle 4, connecting rod 5, slide block 6, hydraulic pressure overload protective oil cylinder 7 and frame 8.Flywheel 2 is constant revolution under the drive of motor 1, when forcing press needs work, clutch 3 engages, the rotary motion of flywheel 2 is passed to crank axle 4 and makes it rotate, the rotary motion of crank axle 4 makes it move along a straight line up and down by connecting rod 5 band movable slider 6, slide block 6 complete the punching press to workpiece or drawing work.Think that flywheel 2 is that constant speed rotates in this process, therefore the period of motion of slide block 6 is constant, that is the slide block speed corresponding to each position in the range of upper and lower stroke is constant and determine, this also one of feature having fully demonstrated punching machine, that is, there is higher work efficiency.But, punching machine when making punching stretch technique to workpiece, also reflect and slide block 6 movement velocity is changed at particular job section needs the requirement slowed down, and slide block 6 performs the requirement of pause pressure holding function at bottom dead centre, in order that improving high finished product rate and the high-quality of product.Therefore, professional person requires Design Imported multi-bar mechanical press and servounit forcing press, the requirement that when the most substantially can meet drawing process, slide block movement velocity variations slows down for this.But there are some important problems:
1. equipment precision requirement is high, processing technology is complicated；
2. the ram speed change amount of slowing down is unadjustable；
The most expensive, user is not easily accepted by.
In order to efficiently solve the problems referred to above that traditional mechanical forcing press exists, this utility model provides a kind of simple in construction, performance is good, easy to process, cheap hydraulic pressure difference dynamic formula punching machine, it is on the basis of standard machinery forcing press, add hydraulic differential system, this system is connected with the overcurrent protection oil cylinder 7 in slide block 6, in the speed change section that slide block 6 needs, hydraulic differential system makes the equivalent cavity volume volume of constant volume oil mass in overcurrent protection oil cylinder 7 become big, the up and down motion speed of connecting rod 5 lower end and the movement velocity of actually descending of slide block 6 is made to have a speed difference, the most at this moment relative connecting rod 5 lower end part of slide block 6 has a relative displacement upwards, thus realize Press Slider 6 and slow down descending purpose；When Press Slider 6 stroke puts i.e. bottom dead centre to lowermost position, crank axle 4 drivening rod 5 and slide block 6 upwards backhaul, but the effect due to hydraulic differential system, the equivalent cavity volume volume of constant volume oil mass in overcurrent protection oil cylinder 7 is allowed to diminish, connecting rod 5 and slide block 6 is made to have a relative adverse movement process, that is within a limited time period, while connecting rod 5 upwards backhaul, it is motionless that slide block 5 stops at bottom dead centre, thus realize Press Slider 5 and perform the function of pressurize at bottom dead centre, complete and meet punching machine well and regulate change in the speed of specific trip segment.
As shown in Figure 2, the concrete technical scheme that this utility model uses is as follows:
nullA kind of hydraulic pressure difference dynamic formula punching machine，Including motor 1、Flywheel 2、Clutch 3、Crank axle 4、Connecting rod 5、Slide block 6、Overcurrent protection oil cylinder 7 and frame 8，Motor 1 is in transmission connection with flywheel 2，Flywheel 2 is connected with crank axle 4 by clutch 3，Crank axle 4 is slidably connected with slide block 6 by connecting rod 5，Described connecting rod 5 is connected with overcurrent protection oil cylinder 7，Overcurrent protection oil cylinder 7 is positioned at slide block 6，Slide block 6 is arranged in frame 8，Connect on described overcurrent protection oil cylinder 7 and have hydraulic differential system，Described hydraulic differential system includes support 9、Synchronous fuel tank 10、Proportional cylinder 14、Pressure transducer 20、Leather bag accumulator、Solenoid directional control valve、Oil feeder 25 and fuel tank 26，Described support 9 be installed on slide block 6 and with described synchronous fuel tank 10 sliding contact，Synchronous fuel tank 10 is arranged in frame 8 and is connected with the lumen of proportional cylinder 14 by the first solenoid directional control valve 12，The epicoele of proportional cylinder 14 is connected with overcurrent protection oil cylinder 7，And the epicoele of proportional cylinder 14 is connected with the second leather bag accumulator 22 by pressure transducer 20，The cavity of resorption of proportional cylinder 14 is connected with the second solenoid directional control valve 13 and proportional pressure valve 15 in turn，And the cavity of resorption of proportional cylinder 14 and the first body leather bag accumulator 21 are connected，The first described body leather bag accumulator 21 is connected with oil feeder 25 by the 3rd solenoid directional control valve 16 with the second leather bag accumulator 22，Connect on oil feeder 25 and have fuel tank 26.
The crank axle of punching machine rotates a circle 3600Being referred to as one cycle of ram travel, wherein crank axle is from most going up 00Position rotate to the most lower 1800Position be referred to as slide block down journey section, and again from the most lower 1800Position rotate to most going up 00Position be referred to as slide block backhaul section, the impulse stroke section of general slide block is at the 90 of down stroke section0-1800In the range of, the impulse stroke section of slide block is divided into again speed of working stroke section and impulse stroke braking section.
1) the speed of working stroke section of slide block 6: in the trip speed section, slide block 6 stroke is constant to speed corresponding to each position.nullSlide block 6 is when impulse stroke，Second solenoid directional control valve 13 energising transposition，Owing to the effect of elastic resistance of workpiece makes the oil pressure in overcurrent protection oil cylinder 7 raise，This oil pressure acts also on the epicoele rod areas of proportional cylinder 14 simultaneously，And try hard to make the piston rod of proportional cylinder 14 descending，The described oil pressure force value in overcurrent protection oil cylinder 7 is exported to proportional pressure valve 15 in the form of a voltage by pressure transducer 20，At this moment pressure transducer 20 exports current value corresponding with this oil pressure，This corresponding current value is as the input current of proportional pressure valve 15，Thus automatically determine the oil pressure relief setting value of proportional pressure valve 15，Make the oil pressure born on cavity area under the piston rod of proportional cylinder 14 identical with epicoele，Again owing to being provided with upper piston rod and lower piston rod in described proportional cylinder 14，The inner chamber of proportional cylinder 14 is divided into epicoele、Lumen and cavity of resorption，The piston rod cavity of resorption oil pressure active area of proportional cylinder 14 is more than epicoele oil pressure active area，So the piston rod of proportional cylinder 14 will not descending movement，At this moment slide block 6 does not make differential work.
2) slide block 6 impulse stroke braking section: slide block 6 continues traveling downwardly, the piston rod of the synchronous fuel tank 10 of support 9 pressure touch and its sliding contact, make synchronous fuel tank 10 descending, the oil pressure of synchronous fuel tank 10 cavity of resorption is entered the lumen of proportional cylinder 14, force the descent of piston of proportional cylinder 14, owing to this descent of piston makes the cavity volume volume of proportional cylinder 14 epicoele become big, this cavity volume volume is referred to as equivalent cavity volume volume with the cavity volume volume sum of overcurrent protection oil cylinder 7, therefore equivalent cavity volume volume just becomes big, and the constant volume oil mass in overcurrent protection oil cylinder 7 is constant, so now connecting rod 5 lower end part has a move toward one another displacement with the piston opposing slider 6 of the overcurrent protection oil cylinder 7 being attached thereto---the most differential, reduce the slide block 6 Bottom Runby in the unit interval, achieve slide block 6 retarded motion operationally.Notably: slide block 6 each moment during descending meets above-mentioned differential principle, therefore its stroke and rate curve are continuous and derivable.
3) slide block 6 bottom dead centre pressure holding function: when slide block 6 arrives bottom dead centre (1800Place) time, it is achieved stop pressurize.Now connecting rod 5 lower end part and the piston of overcurrent protection oil cylinder 7 being connected with connecting rod 5 make upwards backhaul; simultaneously; second solenoid directional control valve 13 power-off restoration; first solenoid directional control valve 12 energising transposition; under the first Accumulator 21 effect; the piston of proportional cylinder 14 pushes away on rapidly; the pressure oil liquid of proportional cylinder 14 epicoele and the pressure oil of the second Accumulator 22 and oil feeder 25 is made jointly to be supplemented in overcurrent protection oil cylinder 7; overcurrent protection oil cylinder 7 is made immediately to build pressure, to ensure the dwell pressure of slide block 6.The fluid of proportional cylinder 14 lumen flows into fuel tank 26 by the first solenoid directional control valve 12 in this process.When the piston stroking upward of overcurrent protection oil cylinder 7 is to extreme position (namely pressurize terminates), the most up backhaul of band movable slider 6 is until top dead-centre (3600Position), slide block 6 completes a working cycle.
Embodiment
2
:
On the basis of embodiment 1, in hydraulic differential system described in the utility model, oil feeder 25 passes through the 3rd solenoid directional control valve 16 to the first Accumulator 21 and the second Accumulator 22 fuel feeding, being connected with the second electro connecting pressure gauge 18, check valve the 11, the 3rd electro connecting pressure gauge 19, pressure switch 1 and pressure switch 2 24 between described the second leather bag accumulator 22 and pressure transducer 20 in turn, being connected between described the first body leather bag accumulator 21 and the 3rd solenoid directional control valve 16 has the first electro connecting pressure gauge 17 and check valve 11.The bound of charge oil pressure is by the first electro connecting pressure gauge 17, second electro connecting pressure gauge 18, 3rd electro connecting pressure gauge 19 and pressure switch 1 and the control of pressure switch 2 24, the second described leather bag accumulator 22 is connected with synchronous fuel tank 10 by check valve 11, by Accumulator the second leather bag accumulator 22 by the check valve 11 cavity of resorption fuel feeding to synchronous fuel tank 10, its piston rod is made to be in uppermost position in fig-ure, by the check valve being connected between the second leather bag accumulator 22 and the 3rd solenoid directional control valve 16, the check valve connected between the check valve and the epicoele of proportional cylinder 14 and the second leather bag accumulator 22 that are connected between first leather bag accumulator 21 and the 3rd solenoid directional control valve 16 is to limit pressure oil reverse flow.Proportionate relationship between the piston rod cavity of resorption oil pressure active area of described synchronous fuel tank 10, the oil pressure active area in proportional cylinder 14 piston rod upper, middle and lower chamber and overcurrent protection oil cylinder 7 piston rod oil pressure active area determines, completes being actually needed of speed difference momentum meeting slide block 6.
Claims (8)
- null1. a hydraulic pressure difference dynamic formula punching machine，Including motor (1)、Flywheel (2)、Clutch (3)、Crank axle (4)、Connecting rod (5)、Slide block (6)、Overcurrent protection oil cylinder (7) and frame (8)，Motor (1) is in transmission connection with flywheel (2)，Flywheel (2) is connected with crank axle (4) by clutch (3)，Crank axle (4) is slidably connected with slide block (6) by connecting rod (5)，Described connecting rod (5) is connected with overcurrent protection oil cylinder (7)，Overcurrent protection oil cylinder (7) is positioned at slide block (6)，Slide block (6) is arranged in frame (8)，It is characterized in that: the upper connection of described overcurrent protection oil cylinder (7) has hydraulic differential system，Described hydraulic differential system includes support (9)、Synchronous fuel tank (10)、Proportional cylinder (14)、Pressure transducer (20)、Leather bag accumulator、Solenoid directional control valve、Oil feeder (25) and fuel tank (26)，Described support (9) be installed on slide block (6) upper and with described synchronous fuel tank (10) sliding contact，Synchronous fuel tank (10) is arranged at frame (8) and above and is connected with the lumen of proportional cylinder (14) by the first solenoid directional control valve (12)，The epicoele of proportional cylinder (14) is connected with overcurrent protection oil cylinder (7)，And the epicoele of proportional cylinder (14) is connected with the second leather bag accumulator (22) by pressure transducer (20)，The cavity of resorption of proportional cylinder (14) is connected with the second solenoid directional control valve (13) and proportional pressure valve (15) in turn，And the cavity of resorption of proportional cylinder (14) and the first body leather bag accumulator (21) are connected，The first described body leather bag accumulator (21) is connected with oil feeder (25) by the 3rd solenoid directional control valve (16) with the second leather bag accumulator (22)，The upper connection of oil feeder (25) has fuel tank (26).
- A kind of hydraulic pressure difference dynamic formula punching machine the most according to claim 1, it is characterised in that: the described oil pressure force value in overcurrent protection oil cylinder (7) is exported to proportional pressure valve (15) in the form of a voltage by pressure transducer (20).
- A kind of hydraulic pressure difference dynamic formula punching machine the most according to claim 1, it is characterised in that: it is connected with the second electro connecting pressure gauge (18), check valve (11), the 3rd electro connecting pressure gauge (19), pressure switch one (23) and pressure switch two (24) between described pressure transducer (20) and the second leather bag accumulator (22) in turn.
- A kind of hydraulic pressure difference dynamic formula punching machine the most according to claim 1, it is characterised in that: the second described leather bag accumulator (22) is connected with synchronous fuel tank (10) by check valve (11).
- A kind of hydraulic pressure difference dynamic formula punching machine the most according to claim 1, it is characterised in that: it is connected between the first described body leather bag accumulator (21) and the 3rd solenoid directional control valve (16) and has the first electro connecting pressure gauge (17) and check valve (11).
- A kind of hydraulic pressure difference dynamic formula punching machine the most according to claim 1, it is characterised in that: the second described leather bag accumulator (22) is connected check valve (11) between the 3rd solenoid directional control valve (16).
- A kind of hydraulic pressure difference dynamic formula punching machine the most according to claim 1, it is characterized in that: in described proportional cylinder (14), be provided with upper piston rod and lower piston rod, the inner chamber of proportional cylinder (14) is divided into epicoele, lumen and cavity of resorption, and the piston rod cavity of resorption oil pressure active area of proportional cylinder (14) is more than epicoele oil pressure active area.
- A kind of hydraulic pressure difference dynamic formula punching machine the most according to claim 1, it is characterised in that: the proportionate relationship between the piston rod cavity of resorption oil pressure active area of described synchronous fuel tank (10), the oil pressure active area in proportional cylinder (14) piston rod upper, middle and lower chamber and overcurrent protection oil cylinder (7) piston rod oil pressure active area determines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357034.0U CN205651682U (en) | 2016-04-26 | 2016-04-26 | Hydraulic pressure differential type mechanical press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357034.0U CN205651682U (en) | 2016-04-26 | 2016-04-26 | Hydraulic pressure differential type mechanical press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205651682U true CN205651682U (en) | 2016-10-19 |
Family
ID=57400350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620357034.0U Withdrawn - After Issue CN205651682U (en) | 2016-04-26 | 2016-04-26 | Hydraulic pressure differential type mechanical press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205651682U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729850A (en) * | 2016-04-26 | 2016-07-06 | 中国重型机械研究院股份公司 | Hydraulic differential-type mechanical press |
| CN108393387A (en) * | 2018-02-09 | 2018-08-14 | 焦天龙 | A kind of panel computer shell stamping equipment |
| CN111183021A (en) * | 2017-08-03 | 2020-05-19 | 尼恩斯德特有限公司 | Machine tool |
-
2016
- 2016-04-26 CN CN201620357034.0U patent/CN205651682U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729850A (en) * | 2016-04-26 | 2016-07-06 | 中国重型机械研究院股份公司 | Hydraulic differential-type mechanical press |
| CN105729850B (en) * | 2016-04-26 | 2017-06-16 | 中国重型机械研究院股份公司 | Hydraulic pressure difference dynamic formula punching machine |
| CN111183021A (en) * | 2017-08-03 | 2020-05-19 | 尼恩斯德特有限公司 | Machine tool |
| CN111183021B (en) * | 2017-08-03 | 2022-06-14 | 尼恩斯德特有限公司 | Machine tool |
| US11919209B2 (en) | 2017-08-03 | 2024-03-05 | Nienstedt Gmbh | Machine tool |
| CN108393387A (en) * | 2018-02-09 | 2018-08-14 | 焦天龙 | A kind of panel computer shell stamping equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161019 Effective date of abandoning: 20170616 |