CN104259292A - Quick return type blanking buffer device and hydropress for blanking - Google Patents
Quick return type blanking buffer device and hydropress for blanking Download PDFInfo
- Publication number
- CN104259292A CN104259292A CN201410373094.7A CN201410373094A CN104259292A CN 104259292 A CN104259292 A CN 104259292A CN 201410373094 A CN201410373094 A CN 201410373094A CN 104259292 A CN104259292 A CN 104259292A
- Authority
- CN
- China
- Prior art keywords
- valve
- blanking
- buffer
- control valve
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a quick return type blanking buffer device and a hydropress for blanking. The device comprises a main oil cylinder, a buffer cylinder, a pressure adjusting and unloading control block and a return control valve, wherein the main oil cylinder and the buffer cylinder are both accelerating cylinders. In idle travel of the main oil cylinder before the blanking, oil is fed in a II cavity of the main oil cylinder through an oil way for quick downward movement; when a slide block arrives at a buffer acting point, the buffer cylinder uses a blanking pressure signal as input, proper buffer force is built through a pressure adjusting and pressure relieving control block to give an effect support to the slide block; and after the buffer is finished, the oil is supplied to a III cavity of the main oil cylinder and a II cavity of the buffer cylinder through the return control valve for quick return. The device has the advantages of quickening of the downward movement speed of the main oil cylinder and the return speed of the main oil cylinder and the buffer cylinder, improvement of the working efficiency, good buffer effect, low press vibration and low noise.
Description
Technical field
The present invention relates to a kind of hydraulic press buffer hydraulic system, specifically a kind of blanking buffer unit of quick return, be applicable to stamping and blanking hydraulic press.
Background technology
Hydraulic press is when carrying out stamping-out operation, and lose lotus suddenly at the moment press of plate fracture, the hydraulic compression in oil cylinder can discharge rapidly with the elastic deformation energy of fuselage, the spring causing hydraulic press strong, shock and vibration, and produces very large noise.Not only make working environment worsen, and equipment and mold is all caused damage, easily make hydraulic valve damage, have a strong impact on precision and the service life of equipment.
Therefore hydraulic press wants to carry out stamping-out operation, and be generally all necessary to be provided with blanking buffer unit, existing blanking buffer unit is mostly hydraulic cushion, namely at workbench two ends reload buffer cylinder.Its general principle is the moment in plate fracture, opposite force is provided to act on slide block by cushion dashpot, during to replace stamping-out, plate acts on the load on slide block, make press by the smooth transition of punching process load to cushion dashpot load, make hydraulic energy and the fuselage elastic deformation energy controlled release of master cylinder inner accumulated, eliminate Condition of Sudden Unloading phenomenon, also just eliminate the shock and vibration that press produces.In the idle stroke of traditional hydraulic damping device master cylinder before stamping-out, promote slide block down by oil circuit to master cylinder epicoele fuel feeding, at the end of buffering, make it reset by auxiliary pump to master cylinder, cushion dashpot cavity of resorption fuel feeding.There is master cylinder downstream rate slow, master cylinder and cushion dashpot back resetting speed slowly, cause the ineffective problem of hydraulic press.
Summary of the invention
The invention reside in for the deficiency in technical background, a kind of blanking buffer unit and stamping and blanking hydraulic press of quick return is provided.
A blanking buffer unit for quick return, 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 speed-up cylinder; Check valve C, bi-bit bi-pass solenoid directional control valve B is serially connected with successively in the oil circuit that stamping-out pressure signal p is connected with II chamber of cushion dashpot, 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 directional control valve B, bi-bit bi-pass solenoid directional control valve A successively, between bi-bit bi-pass solenoid directional control valve B and bi-bit bi-pass solenoid directional control valve A, is connected to pressure gauge, stop valve; Return 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 all connected with II chamber with I of cushion dashpot, 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-out of two position, three-way electromagnetic change valve is connected with the d mouth of two-way plug-in valve, is connected, is connected time on right working position with fuel tank when its oil-in is on left working position with adjustable throttling place oil circuit.
A kind of stamping and blanking hydraulic press adopting the blanking buffer unit of described quick return.
The invention has the beneficial effects as follows, decrease the empty stroke time of master cylinder before stamping-out and master cylinder, the return interval of cushion dashpot at the end of stamping-out buffering, improve the operating efficiency of hydraulic press; Due to cushion dashpot with stamping-out pressure signal for input, therefore cushion effect automatic following blanking power makes good buffer effect, and fuselage shaking is little, and noise is low, effectively protects hydraulic press, improves working environment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the blanking buffer unit of quick return of the present invention.
In Fig. 1,1 master cylinder, 2 slide blocks, 3 drifts, 4 cushion dashpots, 5 check valve A, 6 pressure gauges, 7 stop valves, 8 bi-bit bi-pass solenoid directional control 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 directional control valve B.
detailed description of the invention:
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1, a kind of blanking buffer unit of quick return, 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 speed-up cylinder; Check valve C 14, bi-bit bi-pass solenoid directional control valve B 15 is serially connected with successively in the oil circuit that stamping-out pressure signal p is connected with II chamber of cushion dashpot 4, the oil circuit that stamping-out pressure signal p is connected with I chamber of cushion dashpot 4 is serially connected with check valve C 14, bi-bit bi-pass solenoid directional control valve B 15, bi-bit bi-pass solenoid directional control valve A 8 successively, between bi-bit bi-pass solenoid directional control valve B 15 and bi-bit bi-pass solenoid directional control valve A 8, is connected to pressure gauge 6, stop valve 7; Return 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 B 9; I chamber of cushion dashpot 4 is connected with fuel tank by check valve A 5.
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 all connected with II chamber with I of cushion dashpot 4, 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-out of two position, three-way electromagnetic change valve 13 is connected with the d mouth of two-way plug-in valve, is connected, is connected time on right working position with fuel tank when its oil-in is on left working position with adjustable throttling 12 place oil circuit.
Embodiment
As shown in Figure 1, in the idle stroke that the piston rod of master cylinder 1 moves downward, working connection is oil-filled to I chamber of master cylinder 1 makes its fast downlink, 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 large blanking pressure; When slide block 2 arrives stamping-out buffer point, bi-bit bi-pass solenoid directional control valve 15 is energized, I, II chamber that stamping-out pressure signal p enters cushion dashpot 4 by bi-bit bi-pass solenoid directional control valve 15, two-position two-way solenoid valve 8 makes cushion dashpot 4 set up enough large cushion effect rapidly and act on slide block 2, fluid in I, II chamber of simultaneous buffering cylinder 4 is by entering fuel tank after a, c mouth of adjustable throttling 12, two-way plug-in valve 11, and slide block energy makes cushion dashpot have enough large pressure while descending to regulate adjustable throttling to ensure; After cushion stroke terminates, two-position three way magnetic 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, backhaul oil by entering II chamber of cushion dashpot 4 after backhaul control valve 10, III chamber of master cylinder makes master cylinder 1, cushion dashpot 4 quick return reset, 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 (3)
1. a blanking buffer unit for quick return, comprise 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 speed-up cylinder; Be serially connected with check valve C(14 successively in the oil circuit that stamping-out pressure signal p is connected with II chamber of cushion dashpot (4)), bi-bit bi-pass solenoid directional control 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 directional control valve B(15), bi-bit bi-pass solenoid directional control valve A(8), at bi-bit bi-pass solenoid directional control valve B(15) and bi-bit bi-pass solenoid directional control valve A(8) between and be connected to pressure gauge (6), stop valve (7); Return pressure oil is connected by III chamber of backhaul control valve (10) with master cylinder (1), and return pressure oil is by described backhaul control valve (10), check valve B(9) be connected with II chamber of cushion dashpot (4); I chamber of cushion dashpot (4) is by check valve A(5) be connected with fuel tank.
2. the blanking buffer unit of the quick return according to claims 1, is characterized in that, 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 all connected with II chamber with I of cushion dashpot (4), 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-out of two position, three-way electromagnetic change valve (13) is connected with the d mouth of two-way plug-in valve, is connected, is connected time on right working position with fuel tank when its oil-in is on left working position with adjustable throttling (12) place oil circuit.
3. one kind adopts the stamping and blanking hydraulic press of the blanking buffer unit of quick return as claimed in claim 1 or 2.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104259292A true CN104259292A (en) | 2015-01-07 |
| CN104259292B CN104259292B (en) | 2016-06-01 |
Family
ID=52150937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410373094.7A Active CN104259292B (en) | 2014-08-01 | 2014-08-01 | The blanking buffer unit of quick backhaul and stamping and blanking hydropress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104259292B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842584A (en) * | 2015-05-04 | 2015-08-19 | 浙江大学 | Self-adaptive cushion cylinder blanking buffering method |
| CN108884845A (en) * | 2016-02-06 | 2018-11-23 | 博格华纳公司 | Hydraulic unit is combined made of hydraulic unit and including at least one this hydraulic unit or combined hydraulic system |
| CN112412900A (en) * | 2020-11-10 | 2021-02-26 | 太原重工股份有限公司 | Main oil cylinder equipment for expanding machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3824821A (en) * | 1971-06-11 | 1974-07-23 | Shuler L Gmbh | Overload safety device 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 |
| CN102168695A (en) * | 2011-04-18 | 2011-08-31 | 徐州开元世纪重型锻压有限公司 | Hydraulic system principle of blanking buffering device of hydraulic press |
| CN102744345A (en) * | 2012-07-19 | 2012-10-24 | 浙江大学 | Hydraulic system of buffering cylinder of forging manipulator |
-
2014
- 2014-08-01 CN CN201410373094.7A patent/CN104259292B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3824821A (en) * | 1971-06-11 | 1974-07-23 | Shuler L Gmbh | Overload safety device 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 |
| CN102168695A (en) * | 2011-04-18 | 2011-08-31 | 徐州开元世纪重型锻压有限公司 | Hydraulic system principle of blanking buffering device of hydraulic press |
| CN102744345A (en) * | 2012-07-19 | 2012-10-24 | 浙江大学 | Hydraulic system of buffering cylinder of forging manipulator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842584A (en) * | 2015-05-04 | 2015-08-19 | 浙江大学 | Self-adaptive cushion cylinder blanking buffering method |
| 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 |
| CN108884845A (en) * | 2016-02-06 | 2018-11-23 | 博格华纳公司 | Hydraulic unit is combined made of hydraulic unit and including at least one this hydraulic unit or combined hydraulic system |
| CN112412900A (en) * | 2020-11-10 | 2021-02-26 | 太原重工股份有限公司 | Main oil cylinder equipment for expanding machine |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104259292B (en) | 2016-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204628155U (en) | A kind of hydraulic cushion braking system | |
| CN104259292A (en) | Quick return type blanking buffer device and hydropress for blanking | |
| CN103644152B (en) | A kind of large-scale gate type hydraulic system of cutting machine | |
| CN100493899C (en) | Active damping control device for hydraulic press punching | |
| CN102758806A (en) | Crossbeam press multi-hydraulic cushion synchronous control system | |
| CN203992579U (en) | Hydraulic system of cutting machine | |
| CN205009649U (en) | Mechanical press hydraulic die cushion controlling means | |
| CN104454707A (en) | Simple hydraulic system for bending machine | |
| CN204729389U (en) | A kind of oil hydraulic cylinder with pressure-reducing cushioning | |
| CN209278257U (en) | A kind of hydraulic cylinder buffer system | |
| CN204471931U (en) | A kind of punching machine air cushion buffer gear | |
| CN205078530U (en) | A hydraulic pressure oil circuit that is used for flat board to turn over mould machine safe being equipped with pressing | |
| CN204458589U (en) | A kind of Horizontal iron ball lapping machine hydraulic pressure installation | |
| CN104191027A (en) | Hydraulic system of plate shearing machine | |
| CN209067576U (en) | Hydraulic system with nitrogen cylinder buffering in Sheet Metal Forming Technology | |
| CN209164243U (en) | A kind of buffer control system of hydraulic press | |
| CN109469664A (en) | A kind of hydraulic cylinder buffer system | |
| CN205895744U (en) | But piston pneumatic cylinder of self return | |
| CN103277356B (en) | A kind of process equipment pressurized oil system | |
| CN204419762U (en) | Horizontal iron ball lapping machine hydraulic system | |
| CN203412828U (en) | Hydraulic control system for stepped cooling bed | |
| CN202593427U (en) | Driving multiple connecting rod air pressure buffering device | |
| CN103470833B (en) | A kind of pressure maintenance mechanism of control valve of quick truck | |
| CN203362662U (en) | Machining equipment oil hydraulic system | |
| CN203508994U (en) | Pressurizer of material feeding front chamber of die casting machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| 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 |