CN201283672Y - Oil supply system for slide block and hydraulic pad of hydraulic press - Google Patents
Oil supply system for slide block and hydraulic pad of hydraulic press Download PDFInfo
- Publication number
- CN201283672Y CN201283672Y CNU2008201611322U CN200820161132U CN201283672Y CN 201283672 Y CN201283672 Y CN 201283672Y CN U2008201611322 U CNU2008201611322 U CN U2008201611322U CN 200820161132 U CN200820161132 U CN 200820161132U CN 201283672 Y CN201283672 Y CN 201283672Y
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- Prior art keywords
- oil
- valve
- auxiliary
- hydraulic
- check valve
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Abstract
The utility model discloses an oil supply system for hydraulic press slider and hydraulic die cushion, belonging to hydraulic press technical field. The system comprises a main oil pump to supply oil for a main oil system and an auxiliary oil pump to supply oil for a hydraulic die cushion oil system via an auxiliary check valve. A first cartridge valve is disposed between the auxiliary check valve and the hydraulic die cushion oil system, wherein the oil inlet of the first cartridge valve is communicated with the oil outlet of the auxiliary check valve, the oil outlet of the first cartridge valve is communicated with the hydraulic die cushion oil system, and a control port of the first cartridge valve is communicated with the oil inlet of the first cartridge valve via a first electromagnetic two-position four-way valve; the oil outlet of the auxiliary check valve is communicated with the main oil system via a second cartridge valve and a fourth check valve, the oil outlet of the fourth check valve is communicated with the main oil system, and a control port of the second cartridge valve is communicated with the oil inlet of the second cartridge valve via a second electromagnetic two-position four-way valve. While the slider moves fast, the auxiliary oil pump can supply oil for the main oil system, accordingly, the utilization efficiency of the auxiliary oil pump can be increased. The oil supply system is applicable for various hydraulic presses.
Description
Technical field
The utility model relates to a kind of forcing press, particularly the hydraulic oil pipe system of forcing press.
Background technology
Hydraulic press of the prior art, its working method mainly is to utilize slide block to pump, to go up, workpiece punching press between the bed die or stamping-out moulding, after workpiece is stamped moulding, need be with the workpiece demoulding, the above-mentioned course of work is achieved by hydraulic-driven, the oil piping system of existing hydraulic press, mainly include working connection system and hydraulic die cushion oil piping system, the working connection system is used for to the master cylinder fuel feeding, ordering about slide block moves up and down, the hydraulic die cushion oil piping system is used to drive the hydraulic die cushion action, realize the demoulding, during the working connection system works, there is LAP to need slide block upward fast or down fast, this moment, master cylinder needed oil mass big, after slide block arrives deceleration point, running speed of sliding block slows down, at this moment, the master cylinder oil inlet quantity is little, when slide block arrived near the top dead-centre, the die cavity of mould was pushed out workpiece in hydraulic die cushion work, realize the demoulding, in the existing oil piping system, working connection system and hydraulic die cushion oil piping system are separate, and the working connection system passes through main oil pump, main check valve is given working connection system fuel feeding, the hydraulic die cushion oil piping system is given hydraulic die cushion oil piping system fuel feeding by auxiliary oil pump through auxiliary check valve, also press oil piping system to connect fuel tank between auxiliary check valve and the auxiliary oil pump, during auxiliary oil pump work, build the oil pressure of pressing oil piping system can set up certain pressure through building.Its weak point is: working connection system and hydraulic die cushion oil piping system are separate, on slide block is fast or fast following time, the hydraulic die cushion oil piping system provides support for the working connection system, cause main oil pump need be provided with many, to adapt to the demand of different fuel deliveries, it is less economical, the equipment cost height.
The utility model content
The purpose of this utility model provides the oil supply system of a kind of slider of hydraulic press and hydraulic die cushion, makes the working connection system can access the support of auxiliary oil pump, to reduce manufacturing cost.
The purpose of this utility model is achieved in that the oil supply system of slider of hydraulic press and hydraulic die cushion, comprise main oil pump and auxiliary oil pump, main oil pump is given working connection system fuel feeding by main check valve, auxiliary oil pump is given hydraulic die cushion oil piping system fuel feeding by auxiliary check valve, also press oil piping system to connect fuel tank between auxiliary check valve and the auxiliary oil pump through building, be provided with first inserted valve between described auxiliary check valve and the hydraulic die cushion oil piping system, the described first inserted valve oil-in is connected the oil-out of auxiliary check valve, the oil-out of first inserted valve is connected the hydraulic die cushion oil piping system, the oil-in that the control port of first inserted valve is connected first inserted valve through the B hydraulic fluid port and the O hydraulic fluid port of the first electromagnetism two-position four-way valve, the P hydraulic fluid port connected tank of the first electromagnetism two-position four-way valve, the A hydraulic fluid port sealing of the first electromagnetism two-position four-way valve; The oil-out of auxiliary check valve is connected the working connection system through second inserted valve and the 4th check valve, the described second inserted valve oil-in is connected the oil-out of auxiliary check valve, the oil-out of second inserted valve connects the oil-in of the 4th check valve, the oil-out of the 4th check valve meets the working connection system, the oil-in that the control port of second inserted valve is connected second inserted valve through the O hydraulic fluid port and the B hydraulic fluid port of the second electromagnetism two-position four-way valve, the A hydraulic fluid port connected tank of the second electromagnetism two-position four-way valve, the P hydraulic fluid port sealing of the second electromagnetism two-position four-way valve.
During this device work, main oil pump and auxiliary oil pump start, the first electromagnetism two-position four-way valve and the second electromagnetism two-position four-way valve do not have, first inserted valve and second inserted valve are all closed, build press oil piping system can be in the oil circuit before first inserted valve and second inserted valve build-up pressure, when the slide block fast uplink, master cylinder needs oil mass big, at this moment, the second electromagnetism two-position four-way valve gets, second inserted valve is opened, and auxiliary oil pump can be given working connection system fuel feeding through the 4th check valve, satisfies the required oil mass of slide block rapid movement; After slide block arrives deceleration point, the second electromagnetism two-position four-way valve dead electricity, second inserted valve is closed, the first electromagnetism two-position four-way valve gets electric, and first inserted valve is opened, and auxiliary oil pump can directly be given hydraulic die cushion oil piping system fuel feeding, make hydraulic die cushion to eject fast, simultaneously, slide block is backhaul at a slow speed.Compared with prior art, the utility model can be given working connection control system fuel feeding by auxiliary oil pump, has improved the utilization ratio of auxiliary oil pump, and main oil pump only need be provided with one, reduced manufacturing cost, improved economy, simultaneously, also provide possibility for lathe raising speed, because ejecting of hydraulic die cushion can begin from the sequential of slide block speed change point to carry out, rather than from slide block arrival upper dead center position, reduced time working clearance, improved lathe efficient.This device can be used on the various hydraulic machines.
For the selection of more fuel deliveries is provided, described auxiliary oil pump, auxiliary check valve and build and press oil piping system to be provided with two groups, the outlet of two auxiliary check valves also connects.Two groups of auxiliary oil pumps are worked or independent one group of work simultaneously, the pressure oil of different flow are provided can for the working connection system, can change slide block movement speed; Two groups of auxiliary oil pumps also can be standby each other, and only use one group.
Description of drawings
Fig. 1 is the utility model fundamental diagram.
The specific embodiment
As figure, the oil supply system of slider of hydraulic press and hydraulic die cushion, comprise main oil pump B3 and two groups of auxiliary oil pump B1, B2, main oil pump B3 gives the A of working connection system fuel feeding by main check valve D3, auxiliary oil pump B1 gives hydraulic die cushion oil piping system B fuel feeding by auxiliary check valve D1, presses oil piping system C to connect fuel tank through building between auxiliary check valve D1 and the corresponding auxiliary oil pump B1; Auxiliary oil pump B2 gives hydraulic die cushion oil piping system B fuel feeding by auxiliary check valve D2, presses oil piping system C to connect fuel tank through building between auxiliary check valve D1 and the corresponding auxiliary oil pump B1; The oil-out of auxiliary check valve D1, D2 also connects, be provided with the first inserted valve C13 between auxiliary check valve D1, D2 and the hydraulic die cushion oil piping system B, the described first inserted valve C13 oil-in is connected the oil-out of auxiliary check valve D1, D2, the oil-out of the first inserted valve C13 is connected hydraulic die cushion oil piping system B, the oil-in that the control port of the first inserted valve C13 is connected the first inserted valve C13 through B hydraulic fluid port and the O hydraulic fluid port of the first electromagnetism two-position four-way valve YV13, the P hydraulic fluid port connected tank of the first electromagnetism two-position four-way valve YV13, the A hydraulic fluid port sealing of the first electromagnetism two-position four-way valve YV13; Auxiliary check valve D1, the oil-out of D2 is connected the working connection A of system through the second inserted valve C12 and the 4th check valve D4, the second inserted valve C12 oil-in is connected auxiliary check valve D1, the oil-out of D2, the oil-out of the second inserted valve C12 connects the oil-in of the 4th check valve D4, the oil-out of the 4th check valve D4 meets the A of working connection system, the oil-in that the control port of the second inserted valve C12 is connected the second inserted valve C12 through O hydraulic fluid port and the B hydraulic fluid port of the second electromagnetism two-position four-way valve YV14, the A hydraulic fluid port connected tank of the second electromagnetism two-position four-way valve YV14, the P hydraulic fluid port sealing of the second electromagnetism two-position four-way valve YV14.
During work, main oil pump B3 and auxiliary oil pump B1, B2 starts, the first electromagnetism two-position four-way valve YV13 and the second electromagnetism two-position four-way valve YV14 do not have, the first inserted valve C13 and the second inserted valve C12 all close, build press oil piping system C and D can be in the oil circuit before the first inserted valve C13 and the second inserted valve C12 build-up pressure, when the slide block fast uplink, master cylinder needs oil mass big, at this moment, the second electromagnetism two-position four-way valve YV14 gets, the second inserted valve C12 opens, auxiliary oil pump B1, B2 can give the A of working connection system fuel feeding through the 4th check valve D4, satisfies the required oil mass of slide block rapid movement; After slide block arrives deceleration point, the second electromagnetism two-position four-way valve YV14 dead electricity, the second inserted valve C12 closes, the first electromagnetism two-position four-way valve YV13 gets, the first inserted valve C13 opens, and auxiliary oil pump B1, B2 can directly give hydraulic die cushion oil piping system B fuel feeding, make hydraulic die cushion to eject fast, simultaneously, slide block backhaul at a slow speed.
Claims (2)
1, the oil supply system of slider of hydraulic press and hydraulic die cushion, comprise main oil pump and auxiliary oil pump, main oil pump is given working connection system fuel feeding by main check valve, auxiliary oil pump is given hydraulic die cushion oil piping system fuel feeding by auxiliary check valve, also press oil piping system to connect fuel tank between auxiliary check valve and the auxiliary oil pump through building, it is characterized in that: be provided with first inserted valve between described auxiliary check valve and the hydraulic die cushion oil piping system, the described first inserted valve oil-in is connected the oil-out of auxiliary check valve, the oil-out of first inserted valve is connected the hydraulic die cushion oil piping system, the oil-in that the control port of first inserted valve is connected first inserted valve through the B hydraulic fluid port and the O hydraulic fluid port of the first electromagnetism two-position four-way valve, the P hydraulic fluid port connected tank of the first electromagnetism two-position four-way valve, the A hydraulic fluid port sealing of the first electromagnetism two-position four-way valve; The oil-out of auxiliary check valve is connected the working connection system through second inserted valve and the 4th check valve, the described second inserted valve oil-in is connected the oil-out of auxiliary check valve, the oil-out of second inserted valve connects the oil-in of the 4th check valve, the oil-out of the 4th check valve meets the working connection system, the oil-in that the control port of second inserted valve is connected second inserted valve through the O hydraulic fluid port and the B hydraulic fluid port of the second electromagnetism two-position four-way valve, the A hydraulic fluid port connected tank of the second electromagnetism two-position four-way valve, the P hydraulic fluid port sealing of the second electromagnetism two-position four-way valve.
2, the oil supply system of slider of hydraulic press according to claim 1 and hydraulic die cushion is characterized in that: described auxiliary oil pump, auxiliary check valve and build and press oil piping system to be provided with two groups, the outlet of corresponding two auxiliary check valves also connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201611322U CN201283672Y (en) | 2008-10-20 | 2008-10-20 | Oil supply system for slide block and hydraulic pad of hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201611322U CN201283672Y (en) | 2008-10-20 | 2008-10-20 | Oil supply system for slide block and hydraulic pad of hydraulic press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201283672Y true CN201283672Y (en) | 2009-08-05 |
Family
ID=40948657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201611322U Expired - Lifetime CN201283672Y (en) | 2008-10-20 | 2008-10-20 | Oil supply system for slide block and hydraulic pad of hydraulic press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201283672Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101402263B (en) * | 2008-10-20 | 2011-05-04 | 江苏国力锻压机床有限公司 | Oil supply system for slide block and hydraulic pad of hydraulic press |
| CN103522575A (en) * | 2013-10-22 | 2014-01-22 | 严培义 | Mechanism powder forming machine and quantitative oil supply system |
-
2008
- 2008-10-20 CN CNU2008201611322U patent/CN201283672Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101402263B (en) * | 2008-10-20 | 2011-05-04 | 江苏国力锻压机床有限公司 | Oil supply system for slide block and hydraulic pad of hydraulic press |
| CN103522575A (en) * | 2013-10-22 | 2014-01-22 | 严培义 | Mechanism powder forming machine and quantitative oil supply system |
| CN103522575B (en) * | 2013-10-22 | 2015-05-13 | 宁波汇众粉末机械制造有限公司 | Mechanism powder forming machine and quantitative oil supply system |
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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: 20090805 Effective date of abandoning: 20081020 |