CN104259292B - The blanking buffer unit of quick backhaul and stamping and blanking hydropress - Google Patents
The blanking buffer unit of quick backhaul and stamping and blanking hydropress Download PDFInfo
- Publication number
- CN104259292B CN104259292B CN201410373094.7A CN201410373094A CN104259292B CN 104259292 B CN104259292 B CN 104259292B CN 201410373094 A CN201410373094 A CN 201410373094A CN 104259292 B CN104259292 B CN 104259292B
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- Prior art keywords
- valve
- master cylinder
- cushion dashpot
- backhaul
- chamber
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention discloses blanking buffer unit and the stamping and blanking hydropress of a kind of quick backhaul. This device comprises master cylinder, cushion dashpot, pressure regulation and unloading control block, backhaul control valve, and master cylinder, cushion dashpot are speedup cylinder. Before stamping-out in the idle motion of master cylinder, oil circuit is oil-filled to II chamber of master cylinder makes it descending fast, when slide block arrives shock absorption point, cushion dashpot is taking stamping-out pressure signal as input, setting up suitable cushion effect by pressure regulation and pressure release controll block effectively to support to slide block one, buffering makes its quick back resetting by backhaul control valve to master cylinder III chamber and cushion dashpot II chamber fuel feeding after terminating. It is an advantage of the invention that and improve master cylinder downstream rate and master cylinder, cushion dashpot back resetting speed, it is to increase working efficiency, good buffer effect, press vibration is little, and noise is low.
Description
Technical field
The present invention relates to a kind of hydropress buffer hydraulic system, specifically the blanking buffer unit of a kind of quick backhaul, is applicable to stamping and blanking hydropress.
Background technology
Hydropress is when carrying out stamping-out operation, and the moment press in plate fracture loses suddenly lotus, and the hydraulic compression in oil cylinder can discharge rapidly with the elastic deformation energy of fuselage, the spring that causes hydropress strong, shock and vibration, and produces very big noise. Not only make Working environment worsen, and equipment and mold is all caused infringement, easily make hydraulicvalve damage, serious precision and the work-ing life affecting equipment.
Therefore hydropress wants to carry out stamping-out operation, is generally all necessary to be provided with blanking buffer unit, and existing blanking buffer unit is mostly hydraulic cushion, namely at worktable two ends reload buffer cylinder. Its ultimate principle is the moment in plate fracture, reverse masterpiece is provided to be used on slide block by cushion dashpot, the load that during to replace stamping-out, plate acts on slide block, make press by punching process load smooth transition to cushion dashpot load, make master cylinder inner accumulated hydraulic pressure can with fuselage elastic deformation energy controlled release, eliminate and unload suddenly phenomenon, also just eliminate the shock and vibration that press produces. In the idle motion of traditional hydraulic damping device master cylinder before stamping-out, promote slide block down by oil circuit to chamber fuel feeding on master cylinder, make it reset by service pump to chamber fuel feeding under master cylinder, cushion dashpot at the end of buffering. There is master cylinder downstream rate slow, master cylinder and cushion dashpot back resetting speed are slow, cause the problem of the inefficiency of hydropress.
Summary of the invention
The invention reside in for the deficiency in technical background, it is provided that the blanking buffer unit of a kind of quick backhaul and stamping and blanking hydropress.
A blanking buffer unit for quick backhaul, comprises master cylinder, cushion dashpot, pressure regulation and unloading control block, backhaul control valve; It is characterized in that, described master cylinder, cushion dashpot are speedup cylinder; The oil circuit that stamping-out pressure signal p is connected with II chamber of cushion dashpot is serially connected with check valve C, bi-bit bi-pass solenoid operated directional valve B successively, the oil circuit that stamping-out pressure signal p is connected with I chamber of cushion dashpot is serially connected with check valve C, bi-bit bi-pass solenoid operated directional valve B, bi-bit bi-pass solenoid operated directional valve A successively, between bi-bit bi-pass solenoid operated directional valve B and bi-bit bi-pass solenoid operated directional valve A and be connected to pressure warning unit, stopping valve; Backhaul pressure oil is connected with III chamber of master cylinder by backhaul control valve, is connected with II chamber of cushion dashpot by backhaul control valve, check valve B; I chamber of cushion dashpot is connected with fuel tank by check valve A.
Described pressure regulation and unloading control block V, it is made up of two-way plug-in valve, adjustable throttling, two position, three-way electromagnetic change valve; A, b mouth of two-way plug-in valve is I being connected with cushion dashpot all with II chamber, and its c mouth is connected with fuel tank; Adjustable throttling is serially connected on the oil circuit at two-way plug-in valve a mouth place; The oil outlet of two position, three-way electromagnetic change valve is connected with the d mouth of two-way plug-in valve, is connected with adjustable throttling place oil circuit, is connected with fuel tank time on right working position when its oil-in is on left working position.
The stamping and blanking hydropress of a kind of blanking buffer unit adopting described quick backhaul.
The invention has the beneficial effects as follows, decrease the empty stroke time of master cylinder before stamping-out and master cylinder, the cushion dashpot backhaul time at the end of stamping-out cushions, it is to increase the working efficiency of hydropress; Owing to cushion dashpot is taking stamping-out pressure signal as input, therefore cushion effect automatic following blanking power makes good buffer effect, and fuselage shaking is little, and noise is low, effectively protects hydropress, improves Working environment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the blanking buffer unit of the quick backhaul of the present invention.
In Fig. 1,1 master cylinder, 2 slide blocks, 3 drifts, 4 cushion dashpots, 5 check valve A, 6 pressure warning units, 7 stopping valve, 8 bi-bit bi-pass solenoid operated directional valve A, 9 check valve B, 10 backhaul control valves, 11 two-way plug-in valves, 12 adjustable throttlings, 13 two position, three-way electromagnetic change valves, 14 check valve C, 15 bi-bit bi-pass solenoid operated directional valve B.
Embodiment:
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1, the blanking buffer unit of a kind of quick backhaul, comprises master cylinder 1, cushion dashpot 4, pressure regulation and unloading control block V, backhaul control valve 10; Described master cylinder 1, cushion dashpot 4 are speedup cylinder; The oil circuit that stamping-out pressure signal p is connected with II chamber of cushion dashpot 4 is serially connected with check valve C14, bi-bit bi-pass solenoid operated directional valve B15 successively, the oil circuit that stamping-out pressure signal p is connected with I chamber of cushion dashpot 4 is serially connected with check valve C14, bi-bit bi-pass solenoid operated directional valve B15, bi-bit bi-pass solenoid operated directional valve A8 successively, between bi-bit bi-pass solenoid operated directional valve B15 and bi-bit bi-pass solenoid operated directional valve A8 and be connected to pressure warning unit 6, stopping valve 7; Backhaul pressure oil is connected with III chamber of master cylinder 1 by backhaul control valve 10, is connected with II chamber of cushion dashpot 4 by backhaul control valve 10, check valve B9; I chamber of cushion dashpot 4 is connected with fuel tank by check valve A5.
Described pressure regulation and unloading control block V, it is made up of two-way plug-in valve 11, adjustable throttling 12, two position, three-way electromagnetic change valve 13; A, b mouth of two-way plug-in valve 11 is I being connected with cushion dashpot 4 all with II chamber, and its c mouth is connected with fuel tank; Adjustable throttling 12 is serially connected on the oil circuit at a mouth place of two-way plug-in valve 11; The oil outlet of two position, three-way electromagnetic change valve 13 is connected with the d mouth of two-way plug-in valve, is connected with adjustable throttling 12 place oil circuit, is connected with fuel tank time on right working position when its oil-in is on left working position.
Embodiment
As shown in Figure 1, in the idle motion that the piston rod of master cylinder 1 moves downward, working connection is oil-filled to I chamber of master cylinder 1 makes it descending fast, and when drift 3 contacts with plate, working connection is simultaneously oil-filled to I, II chamber of master cylinder 1 makes it provide enough big stamping-out power; When slide block 2 arrives stamping-out buffer point, bi-bit bi-pass solenoid operated directional valve 15 is energized, I, II chamber that stamping-out pressure signal p enters cushion dashpot 4 by bi-bit bi-pass solenoid operated directional valve 15, two-position two-way solenoid valve 8 makes cushion dashpot 4 set up rapidly enough big cushion effect and act on slide block 2, entering fuel tank after a, c mouth of fluid in I, II chamber of simultaneous buffering cylinder 4 by adjustable throttling 12, two-way plug-in valve 11, slide block can have enough big pressure by the descending cushion dashpot that simultaneously makes to regulate adjustable throttling to ensure; After buffering stroke terminates, two-position three-way electromagnetic valve 12 is energized, and b, c mouth of two-way plug-in valve 11 is connected, and the fluid in I, II chamber of cushion dashpot is by two-way plug-in valve 11 pressure release rapidly; When slide block 2 backhaul, two-position two-way solenoid valve 8, backhaul control valve 10 are energized, return oil by entering II chamber of cushion dashpot 4 after backhaul control valve 10, III chamber of master cylinder make master cylinder 1, cushion dashpot 4 fast back resetting, in the process that cushion dashpot 4 resets, the fluid in fuel tank is by the I chamber repairing of check valve 5 to cushion dashpot 4.
Claims (2)
1. a blanking buffer unit for quick backhaul, comprises master cylinder (1), cushion dashpot (4), pressure regulation and unloading control block (V), backhaul control valve (10), it is characterized in that, described master cylinder (1), cushion dashpot (4) are speedup cylinder; The oil circuit that stamping-out pressure signal p is connected with II chamber of cushion dashpot (4) is serially connected with check valve C(14 successively), bi-bit bi-pass solenoid operated directional valve B(15), the oil circuit that stamping-out pressure signal p is connected with I chamber of cushion dashpot (4) is serially connected with described check valve C(14 successively), described bi-bit bi-pass solenoid operated directional valve B(15), bi-bit bi-pass solenoid operated directional valve A(8), at bi-bit bi-pass solenoid operated directional valve B(15) and bi-bit bi-pass solenoid operated directional valve A(8) between and be connected to pressure warning unit (6), stopping valve (7); Backhaul pressure oil is connected with III chamber of master cylinder (1) by backhaul control valve (10), and backhaul pressure oil is by described backhaul control valve (10), check valve B(9) it is connected with II chamber of cushion dashpot (4); I chamber of cushion dashpot (4) is by check valve A(5) it is connected with fuel tank;
Described pressure regulation and unloading control block (V) are made up of two-way plug-in valve (11), adjustable throttling (12), two position, three-way electromagnetic change valve (13); A, b mouth of two-way plug-in valve (11) is I being connected with cushion dashpot (4) all with II chamber, and its c mouth is connected with fuel tank; Adjustable throttling (12) is serially connected on the oil circuit at two-way plug-in valve (11) a mouth place; The oil outlet of two position, three-way electromagnetic change valve (13) is connected with the d mouth of two-way plug-in valve, is connected with adjustable throttling (12) place oil circuit, is connected with fuel tank time on right working position when its oil-in is on left working position.
2. one kind adopts the stamping and blanking hydropress of the blanking buffer unit of backhaul fast as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410373094.7A CN104259292B (en) | 2014-08-01 | 2014-08-01 | The blanking buffer unit of quick backhaul and stamping and blanking hydropress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410373094.7A CN104259292B (en) | 2014-08-01 | 2014-08-01 | The blanking buffer unit of quick backhaul and stamping and blanking hydropress |
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| Publication Number | Publication Date |
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| CN104259292A CN104259292A (en) | 2015-01-07 |
| CN104259292B true CN104259292B (en) | 2016-06-01 |
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| CN201410373094.7A Active CN104259292B (en) | 2014-08-01 | 2014-08-01 | The blanking buffer unit of quick backhaul and stamping and blanking hydropress |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842584B (en) * | 2015-05-04 | 2016-05-04 | 浙江大学 | A kind of automatic adaptation cushion cylinder stamping-out way to play for time |
| DE102016001357A1 (en) * | 2016-02-06 | 2017-08-10 | Borgwarner Inc. | Hydraulic component, combination of hydraulic components and hydraulic system with at least one such hydraulic component or combination |
| CN112412900B (en) * | 2020-11-10 | 2022-08-02 | 太原重工股份有限公司 | Main oil cylinder equipment for expanding machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2128867A1 (en) * | 1971-06-11 | 1972-12-28 | L. Schuler GmbH, 7320 Göppingen | Overload protection for the drive elements of presses |
| CN1077680A (en) * | 1992-04-17 | 1993-10-27 | 浙江大学 | Punch buffer for press |
| JPH0760375A (en) * | 1993-08-26 | 1995-03-07 | Toshiba Corp | Equipment and method for blanking sheet |
| CN201036916Y (en) * | 2006-12-08 | 2008-03-19 | 合肥锻压机床有限公司 | Pressure automatic tracing perforating and cutting buffer device |
| CN102168695B (en) * | 2011-04-18 | 2013-08-14 | 徐州开元世纪重型锻压有限公司 | Hydraulic system principle of blanking buffering device of hydraulic press |
| CN102744345B (en) * | 2012-07-19 | 2014-06-11 | 浙江大学 | Hydraulic system of buffering cylinder of forging manipulator |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20150107 Assignee: Huzhou Machine Tool Factory Assignor: Zhejiang University Contract record no.: 2019330000027 Denomination of invention: Quick return type blanking buffer device and hydropress for blanking Granted publication date: 20160601 License type: Common License Record date: 20190307 |
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| EE01 | Entry into force of recordation of patent licensing contract |