CN100486799C - Energy-saving thin plate hydraulic drawing press - Google Patents

Energy-saving thin plate hydraulic drawing press Download PDF

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Publication number
CN100486799C
CN100486799C CNB2006100155243A CN200610015524A CN100486799C CN 100486799 C CN100486799 C CN 100486799C CN B2006100155243 A CNB2006100155243 A CN B2006100155243A CN 200610015524 A CN200610015524 A CN 200610015524A CN 100486799 C CN100486799 C CN 100486799C
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CN
China
Prior art keywords
oil
hydraulic
cylinder
die cushion
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Expired - Fee Related
Application number
CNB2006100155243A
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Chinese (zh)
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CN101134372A (en
Inventor
李凤岚
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Tianjin Tianduan Press Co Ltd
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Tianjin Tianduan Press Co Ltd
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Priority to CNB2006100155243A priority Critical patent/CN100486799C/en
Publication of CN101134372A publication Critical patent/CN101134372A/en
Application granted granted Critical
Publication of CN100486799C publication Critical patent/CN100486799C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The energy-saving metal sheet stretching hydraulic press includes one press body comprising one upper crossbeam, one lower crossbeam and lower uprights; one main oil cylinder and two side oil cylinders; one slide block; one worktable; one hydraulic cushion and one hydraulic cushion oil cylinder; one hydraulic control system comprising one hydraulic control oil path for main oil cylinder, one hydraulic control oil path for side oil cylinders one hydraulic control oil path for hydraulic cushion oil cylinder; and one electrical control system. It features the hydraulic control oil path for hydraulic cushion oil cylinder with two inserted non-return valves, one two-position three-way solenoid valve, one shuttle valve and one proportional overflow solenoid valve. It has the advantages of circular utilization of pressurized oil, low power consumption, high efficiency, high operation speed, less heat and low noise.

Description

Energy-saving thin plate hydraulic drawing press
Technical field
The invention belongs to hydraulic press, particularly relate to a kind of energy-saving thin plate hydraulic drawing press.
Background technology
The hydraulic press that is used for the thin plate drawing and forming, usually will be below workbench the face of being installed on it be fixed with the hydraulic die cushion of push rod, so that when sheet material is carried out the drawing and forming operation, make the push rod that inserts in workbench and the counterdie being clipped in, the periphery of the sheet material between the counterdie withstands, make sheet material can obtain evenly normal drawing and forming, the power of hydraulic die cushion is to be provided by the hydraulic die cushion oil cylinder that is fixed on locking nut on the sill, in present known technology, its Design of Hydraulic System is mainly distinguished the ability to work and the power match problem of each executive component of taking into account system, not too note overall system efficiency, the control oil circuit of the hydraulic die cushion oil cylinder in the system is to be relatively independent of for slide block to provide the master cylinder control of power oil circuit with the control oil circuit side cylinder, thereby after the push rod jack-up of hydraulic die cushion, when slide block down begins product stretched, hydraulic die cushion begins to descend under the suppressing action of slide block, because what the hydraulic die cushion oil cylinder adopted is plunger case, the band pressure fluid of hydraulic die cushion oil cylinder i.e. safety valve from its oil circuit flows back to fuel tank, cause overflow and heating, so not only cause the waste of energy, efficient is low, but also the noise when having increased the power drain of system and hydraulic press work, and the system failure that causes because of heating.
Summary of the invention
A kind of energy resource consumption is few, the energy-saving thin plate hydraulic drawing press of high efficiency for the technical problem that exists in the solution known technology provides in the present invention.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:
A kind of energy-saving thin plate hydraulic drawing press mainly comprises: by entablature, sill, be contained in the fuselage that the column of both sides between entablature and the sill constitutes; Be fastened on master cylinder and two side cylinders on the entablature with locknut; Be installed in the middle of the fuselage and the slide block that is connected with the action piece of master cylinder and two side cylinders; Be contained in the workbench above the sill; Be fastened on hydraulic die cushion oil cylinder on the sill with locknut; Be installed in below the workbench and be connected with the action piece of hydraulic die cushion oil cylinder above be fixed with the hydraulic die cushion of push rod; By the master cylinder hydraulic control oil circuit that drives the master cylinder action, the hydraulic control system that drives the side cylinder hydraulic control oil circuit of two side cylinders and form for the hydraulic die cushion oil cylinder hydraulic control oil circuit that drives the hydraulic die cushion cylinder action; And electric control system; Described hydraulic die cushion oil cylinder hydraulic control oil circuit shifts oil circuit by following hydraulic die cushion oil cylinder oil feeding line and the oil return of hydraulic die cushion oil cylinder and forms:
Hydraulic die cushion oil cylinder oil feeding line comprises:
The first plug-in check valve that oil-in links to each other with the pressure hydraulic fluid port of pump, oil-out links to each other with the hydraulic fluid port of hydraulic die cushion oil cylinder; First safety valve that oil-in links to each other with the hydraulic fluid port of hydraulic die cushion oil cylinder, oil-out links to each other with the drain line that leads to fuel tank; Second safety valve that oil-in links to each other with the hydraulic fluid port of hydraulic die cushion oil cylinder, oil-out links to each other with the drain line that leads to fuel tank; Oil-in and the hydraulic fluid port of hydraulic die cushion oil cylinder and the 3rd continuous safety valve of the drain line that the control mouth links to each other, oil-out leads to fuel tank of first safety valve; And oil-in and the hydraulic fluid port of hydraulic die cushion oil cylinder and the electromagnetic proportion relief valve that the control mouth links to each other, oil-out is directly linked fuel tank of first safety valve;
The oil return of hydraulic die cushion oil cylinder is shifted oil circuit and is comprised:
The second plug-in check valve that oil-in links to each other with the hydraulic fluid port of hydraulic die cushion oil cylinder; The 3rd plug-in check valve that oil-in links to each other with the oil-out of the second plug-in check valve, the hydraulic fluid port of the rodless cavity of the master cylinder on oil-out and the master cylinder hydraulic control oil circuit links to each other; The two-position three way magnetic valve that oil-in links to each other with the oil-out of the second plug-in check valve, the hydraulic fluid port of the rodless cavity of the master cylinder on oil-out and the master cylinder hydraulic control oil circuit links to each other; And be serially connected in shuttle valve between the hydraulic fluid port of rodless cavity of the oil-out of two-position three way magnetic valve and the master cylinder on the master cylinder hydraulic control oil circuit.
Advantage and good effect that the present invention has are: owing to installed additional by two plug-in check valves in the hydraulic die cushion oil cylinder hydraulic of the hydraulic system of the present invention control oil circuit, a two-position three way magnetic valve and the hydraulic die cushion oil cylinder oil return transfer oil circuit that shuttle valve is formed, and in hydraulic die cushion oil cylinder oil feeding line, electromagnetic proportion relief valve is housed, thereby begin product is stretched at slide block down, and then when hydraulic die cushion is descended, make the backflow fluid supercharging of hydraulic die cushion oil cylinder, after reaching certain pressure, under the control of electromagnetic proportion relief valve, two-position three way magnetic valve gets, band presses fluid promptly can enter the rodless cavity of master cylinder successively by the second plug-in check valve and the 3rd plug-in check valve, making originally presses fluid to be able to cycling and reutilization by discharge of safety valve to the band of fuel tank, greatly reduce the consumption of the energy, improved the efficiency of hydraulic press, can save energy and reach 30-50%, also have the operating rate that improves hydraulic press simultaneously, reduce the effect of system's caloric value and reduction noise.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the hydraulic schematic diagram of hydraulic die cushion oil cylinder hydraulic control oil circuit of the present invention.
Label among the figure is respectively: 1-master cylinder; 2-locknut; 3-side cylinder; 4-locknut; 5-entablature; 6-ring flange; 7-column; 8-slide block; 9-patrix; 10-counterdie; 11-workbench; 12-hydraulic die cushion; 13-hydraulic die cushion oil cylinder; 14-sill; 15-locknut; 16-master cylinder control oil circuit; 17-side cylinder control oil circuit; 18-shuttle valve; 19-two-position three way magnetic valve; 20-the three plug-in check valve; 21-the second plug-in check valve; 22-the three safety valve; 23-electromagnetic proportion relief valve; 24-the first safety valve; 25-the first plug-in check valve; 26-pipeline; 27-the second safety valve.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, energy-saving thin plate hydraulic drawing press, be provided with by welded entablature 5, sill 14, be contained in the fuselage of column 7 formations of both sides between entablature and the sill, be fastened with a master cylinder 1 and two side cylinders 3 with locknut 2 and locknut 4 respectively in the installing hole on entablature, master cylinder is the single-piston rod oil cylinder, two side cylinders are plunger cylinder, in the middle of fuselage, be equiped with slide block 8, slide block is connected with the piston rod of master cylinder and two side cylinders and the termination of plunger by ring flange 6, on sill, be mounted with workbench 11, in the installing hole of the bottom of sill, be fastened with three hydraulic die cushion oil cylinders 13 with locknut 15, the hydraulic die cushion oil cylinder is a plunger case, be fixed with the hydraulic die cushion 12 of push rod above below workbench, being equiped with, hydraulic die cushion is connected with the plunger termination of hydraulic die cushion oil cylinder, and 9 among the figure and 10 is respectively and is contained in the patrix below the slide block and is contained in counterdie above the workbench.
The hydraulic control system of hydraulic press by the master cylinder hydraulic control oil circuit that drives the master cylinder action, drive the side cylinder hydraulic control oil circuit of two side cylinders and form for the hydraulic die cushion oil cylinder hydraulic control oil circuit that drives the hydraulic die cushion cylinder action, hydraulic press also includes electric control system, and the hydraulic die cushion oil cylinder hydraulic control oil circuit of its hydraulic control system shifts oil circuit by hydraulic die cushion oil cylinder oil feeding line and the oil return of hydraulic die cushion oil cylinder and forms:
Below see Fig. 2:
Hydraulic die cushion oil cylinder oil feeding line comprises:
Oil-in passes through the first plug-in check valve 25 that pipeline 26 links to each other with the pressure hydraulic fluid port of pump, oil-out links to each other with the hydraulic fluid port of hydraulic die cushion oil cylinder; First safety valve 24 that oil-in links to each other with the hydraulic fluid port of hydraulic die cushion oil cylinder, oil-out links to each other with the drain line that leads to fuel tank; Second safety valve 27 that oil-in links to each other with the hydraulic fluid port of hydraulic die cushion oil cylinder, oil-out links to each other with the drain line that leads to fuel tank; Oil-in and the hydraulic fluid port of hydraulic die cushion oil cylinder and the 3rd continuous safety valve 22 of the drain line that the control mouth links to each other, oil-out leads to fuel tank of first safety valve; And oil-in and the hydraulic fluid port of hydraulic die cushion oil cylinder and the electromagnetic proportion relief valve 23 that the control mouth links to each other, oil-out is directly linked fuel tank of first safety valve;
The oil return of hydraulic die cushion oil cylinder is shifted oil circuit and is comprised:
The second plug-in check valve 21 that oil-in links to each other with the hydraulic fluid port of hydraulic die cushion oil cylinder; The 3rd plug-in check valve 20 that oil-in links to each other with the oil-out of the second plug-in check valve, the hydraulic fluid port of the rodless cavity of the master cylinder on oil-out and the master cylinder hydraulic control oil circuit links to each other; The two-position three way magnetic valve 19 that oil-in links to each other with the oil-out of the second plug-in check valve, the hydraulic fluid port of the rodless cavity of the master cylinder on oil-out and the master cylinder hydraulic control oil circuit links to each other; And be serially connected in shuttle valve 18 between the hydraulic fluid port of rodless cavity of the oil-out of two-position three way magnetic valve and the master cylinder on the master cylinder hydraulic control oil circuit.
The present invention is when work, come the pressure oil of the pressure hydraulic fluid port of self-pumping to enter the first plug-in check valve 25, and then inflow hydraulic die cushion oil cylinder, hydraulic die cushion jack-up, at this moment the hydraulic oil from master cylinder hydraulic control oil circuit 16 and side cylinder hydraulic control oil circuit 17 enters the rodless cavity of master cylinder and the epicoele of side cylinder respectively, make slide block down, when beginning product stretched, hydraulic die cushion falls, make the backflow fluid supercharging of hydraulic die cushion oil cylinder, after reaching certain pressure, under the control of electromagnetic proportion relief valve 23, two-position three way magnetic valve 19 gets electric, and band presses fluid promptly can enter the rodless cavity of master cylinder successively by the second plug-in check valve 21 and the 3rd plug-in check valve 20, realizes that the conversion of stretching hydraulic energy utilizes again.

Claims (1)

1. energy-saving thin plate hydraulic drawing press mainly comprises: by entablature, sill, be contained in the fuselage that the column of both sides between entablature and the sill constitutes; Be fastened on master cylinder and two side cylinders on the entablature with locknut; Be installed in the middle of the fuselage and the slide block that is connected with the action piece of master cylinder and two side cylinders; Be contained in the workbench above the sill; Be fastened on hydraulic die cushion oil cylinder on the sill with locknut; Be installed in below the workbench and be connected with the action piece of hydraulic die cushion oil cylinder above be fixed with the hydraulic die cushion of push rod; By the master cylinder hydraulic control oil circuit that drives the master cylinder action, the hydraulic control system that drives the side cylinder hydraulic control oil circuit of two side cylinders and form for the hydraulic die cushion oil cylinder hydraulic control oil circuit that drives the hydraulic die cushion cylinder action; And electric control system; It is characterized in that: described hydraulic die cushion oil cylinder hydraulic control oil circuit shifts oil circuit by following hydraulic die cushion oil cylinder oil feeding line and the oil return of hydraulic die cushion oil cylinder and forms:
Hydraulic die cushion oil cylinder oil feeding line comprises:
The first plug-in check valve that oil-in links to each other with the pressure hydraulic fluid port of pump, oil-out links to each other with the hydraulic fluid port of hydraulic die cushion oil cylinder; First safety valve that oil-in links to each other with the hydraulic fluid port of hydraulic die cushion oil cylinder, oil-out links to each other with the drain line that leads to fuel tank; Second safety valve that oil-in links to each other with the hydraulic fluid port of hydraulic die cushion oil cylinder, oil-out links to each other with the drain line that leads to fuel tank; Oil-in and the hydraulic fluid port of hydraulic die cushion oil cylinder and the 3rd safety valve that the control mouth links to each other, oil-out links to each other with the drain line that leads to fuel tank of first safety valve; And oil-in and the hydraulic fluid port of hydraulic die cushion oil cylinder and the electromagnetic proportion relief valve that the control mouth links to each other, oil-out is directly linked fuel tank of first safety valve;
The oil return of hydraulic die cushion oil cylinder is shifted oil circuit and is comprised:
The second plug-in check valve that oil-in links to each other with the hydraulic fluid port of hydraulic die cushion oil cylinder; The 3rd plug-in check valve that oil-in links to each other with the oil-out of the second plug-in check valve, the hydraulic fluid port of the rodless cavity of the master cylinder on oil-out and the master cylinder hydraulic control oil circuit links to each other; The two-position three way magnetic valve that oil-in links to each other with the oil-out of the second plug-in check valve, the hydraulic fluid port of the rodless cavity of the master cylinder on oil-out and the master cylinder hydraulic control oil circuit links to each other; And be serially connected in shuttle valve between the hydraulic fluid port of rodless cavity of the oil-out of two-position three way magnetic valve and the master cylinder on the master cylinder hydraulic control oil circuit.
CNB2006100155243A 2006-08-31 2006-08-31 Energy-saving thin plate hydraulic drawing press Expired - Fee Related CN100486799C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2006100155243A CN100486799C (en) 2006-08-31 2006-08-31 Energy-saving thin plate hydraulic drawing press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2006100155243A CN100486799C (en) 2006-08-31 2006-08-31 Energy-saving thin plate hydraulic drawing press

Publications (2)

Publication Number Publication Date
CN101134372A CN101134372A (en) 2008-03-05
CN100486799C true CN100486799C (en) 2009-05-13

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101913086B (en) * 2010-07-14 2012-07-18 合肥合锻机床股份有限公司 Leak-free hydraulic system of mobile workbench
CN104338868A (en) * 2013-07-31 2015-02-11 天津市天锻压力机有限公司 Hydraulic machine with discharging device
CN103448294B (en) * 2013-09-06 2016-06-08 天津市天锻压力机有限公司 Hydraulic press dead slow speed servo fine positioning hydraulic controls system
CN104476792B (en) * 2014-12-10 2016-05-25 重庆蔡氏液压设备有限公司 A kind of hydraulic press

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