CN2936702Y - Hydraulic control system for hydraulic machine buffer - Google Patents

Hydraulic control system for hydraulic machine buffer Download PDF

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Publication number
CN2936702Y
CN2936702Y CN 200620027038 CN200620027038U CN2936702Y CN 2936702 Y CN2936702 Y CN 2936702Y CN 200620027038 CN200620027038 CN 200620027038 CN 200620027038 U CN200620027038 U CN 200620027038U CN 2936702 Y CN2936702 Y CN 2936702Y
Authority
CN
China
Prior art keywords
valve
hydraulic
pressure
pipeline
buffering
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.)
Expired - Fee Related
Application number
CN 200620027038
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Chinese (zh)
Inventor
侠习梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Tianduan Press Co Ltd
Original Assignee
Tianjin Tianduan Press Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianjin Tianduan Press Co Ltd filed Critical Tianjin Tianduan Press Co Ltd
Priority to CN 200620027038 priority Critical patent/CN2936702Y/en
Application granted granted Critical
Publication of CN2936702Y publication Critical patent/CN2936702Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a hydraulic control system for a hydraulic machine buffer, comprising a hydraulic power, an one-way valve, which is connected with the hydraulic power through the pipe, two parallel hydraulic cylinders which are connected with the one-way valve through the pipe, a manometry joint, which is connected between the hydraulic power and the one-way valve, a disconnecting valve and an accumulator which are connected between the hydraulic power and the one-way valve, a cushion valve, which is connected between the one-way valve and the two hydraulic cylinders, and a disconnecting valve and a manometer, which are connected between the one-way valve and the two hydraulic cylinders, which is characterized in that: the cushion valve is composed of an interconnected cone valve, two pressure valves, an adjustable restrictive valve which is connected with the front end of a first pressure valve, and a proportional electromagnetic relief valve. The utility model has the advantages that the output pressure of the automatic cushion hydraulic cylinder which can track the change of the blanking pressure transmit pressure is fitly set off the impulsion to the worktable caused by the slipper block when the blanking processing is completed, and the vibration and noise from the hydraulic machine is less, the operation of jockey is reduced.

Description

The hydraulic control system of hydraulic press buffer
Technical field
The utility model belongs to the hydraulic system of hydraulic press, particularly relates to a kind of hydraulic control system of hydraulic press buffer.
Background technology
In the hydraulic press course of work, its slide block is when the stamping-out process finishing, promptly can cause bigger impact to workbench in the moment that the impulse stroke terminal point loses load, cause vibration and noise, and hydraulic press caused damage, reduce the service life of hydraulic press, for the influence that prevents that this impact from causing hydraulic press, often machinery or hydraulic bjuffer to be installed on hydraulic press, when losing load in the stroke end to reduce slide block to the impact of workbench, in present known technology, the hydraulic control system of hydraulic bjuffer generally includes: from the hydraulic power source of the auxiliary pump of hydraulic press hydraulic system; The check valve that is connected with hydraulic power source by pipeline; The buffering hydraulic cylinder of two parallel connections that are connected with check valve by pipeline; The pressure measuring tie-in that between hydraulic power source and check valve, is connected; The stop valve and the accumulator that between hydraulic power source and check valve, are connected; Between check valve and two buffering hydraulic cylinders, be connected by cone valve, three pressure valve and the trimmer valve piece that is interconnected to constitute of the adjustable throttling before being connected one of them pressure valve; And the stop valve and the pressure gauge that between check valve and two buffering hydraulic cylinders, are connected.The output pressure of above-mentioned hydraulic control system mainly is subjected to the control of trimmer valve piece, but because the pressure valve that the control hydraulic fluid flow rate is played a decisive role can only adopt manual mode to regulate its force value, thereby can not adapt to the requirement that blanking pressure constantly changes, not only easily cause vibration and noise, also increased operative employee's operation.
Summary of the invention
The utility model provides a kind of variation of following the tracks of blanking pressure to regulate the hydraulic control system of the hydraulic press buffer of output pressure automatically for solving the technical problem that exists in the known technology.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is;
A kind of hydraulic control system of hydraulic press buffer comprises: from the hydraulic power source of hydraulic press hydraulic system auxiliary pump; The check valve that is connected with hydraulic power source by pipeline; The buffering hydraulic cylinder of two parallel connections that are connected with check valve by pipeline; The pressure measuring tie-in that on the pipeline between hydraulic power source and the check valve, is connected; The stop valve and the accumulator that on the pipeline between hydraulic power source and the check valve, are connected; The buffering control valve piece that on the pipeline between check valve and two buffering hydraulic cylinders, is connected; And the stop valve and the pressure gauge that between check valve and two buffering hydraulic cylinders, are connected; Described buffering control valve piece is made of the cone valve that is connected in parallel, two pressure valve, ratio electromagnetic relief valves and the adjustable throttling that is serially connected in before one of them pressure valve.
Advantage and the good effect that the utlity model has are: because the utility model substitutes a pressure valve that cushions in the control valve piece with a ratio electromagnetic relief valve, the ratio electromagnetic relief valve just can be followed the tracks of the variation of blanking pressure like this, it is the variation of the current value signal that sends of the electric control system of hydraulic press, automatically regulate its force value, make pressure directly proportional variation of buffering hydraulic cylinder along with the variation of master cylinder pressure, the impact that just right counteracting slide block causes workbench when the stamping-out process finishing, and then vibration and hot-tempered sound when reducing hydraulic press work, and reduce operative employee's operation.
Description of drawings
Fig. 1 is a hydraulic schematic diagram of the present utility model;
Label among the figure is respectively: 1-passes to the pipeline of master cylinder epicoele; 2-ratio electromagnetic relief valve; 3-passes to the pipeline of master cylinder cavity of resorption; 4-master cylinder control valve piece; The 5-hydraulic power source; The 6-pressure measuring tie-in; The 7-stop valve; The 8-accumulator; The 9-adjustable throttling; The 10-pressure valve; The 11-cone valve; The 12-hydraulic power source; The 13-check valve; The 14-pressure valve; 15-buffering control valve piece; 16-ratio electromagnetic relief valve; The 17-stop valve; The 18-pressure gauge; The 19-1-buffering hydraulic cylinder; The 19-2-buffering hydraulic cylinder.
The specific embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows;
See also Fig. 1, the hydraulic control system of hydraulic press buffer, be provided with the hydraulic power source 12 (fuel tank and auxiliary pump are not shown) that constitutes by fuel tank and auxiliary pump, hydraulic power source is connected with check valve 13 by pipeline, check valve is connected with two buffering hydraulic cylinder 19-1 and 19-2 that are connected in parallel by pipeline, on the pipeline between hydraulic power source and the check valve, be connected with pressure measuring tie-in 6, on this pipeline, also be connected with the stop valve 7 and the accumulator 8 that are serially connected in addition, between check valve and two buffering hydraulic cylinders, be connected with by cone valve 11, pressure valve 14, pressure valve 10, ratio electromagnetism overflow 16, and the buffering control valve piece (buffering control loop) 15 of adjustable throttling 9 formations, cone valve 11 wherein, pressure valve 14 is connected in parallel together (they all are connected with fuel tank) with pressure valve 10, adjustable throttling 9 wherein is serially connected in before the inlet of pressure valve 10, also is connected with stop valve 17 and pressure gauge 18 between check valve and two buffering hydraulic cylinders.For the relation of the utility model and master cylinder hydraulic pressure system is described, also with the brief principle signal of master cylinder hydraulic pressure system, label 1 is for passing to the pipeline of master cylinder epicoele among Fig. 1; 2 is the ratio electromagnetic relief valve; 3 for passing to the pipeline of master cylinder cavity of resorption; 4 is master cylinder control valve piece; 5 is hydraulic power source, because the master cylinder hydraulic pressure system has also adopted the ratio electromagnetic relief valve, so the utility model just can be realized the automatic control of output pressure by the electric control system of hydraulic press.
The utility model is in when work, and the current value signal that the ratio electromagnetic relief valve in the buffering control valve piece can send by the electric control system of hydraulic press is regulated its force value at any time, adapts to the variation of master cylinder pressure.

Claims (1)

1. the hydraulic control system of a hydraulic press buffer comprises: from the fuel tank of hydraulic press hydraulic system and the hydraulic power source of auxiliary pump; The check valve that is connected with hydraulic power source by pipeline; The buffering hydraulic cylinder of two parallel connections that are connected with check valve by pipeline; The pressure measuring tie-in that on the pipeline between hydraulic power source and the check valve, is connected; The stop valve and the accumulator that on the pipeline between hydraulic power source and the check valve, are connected; The buffering control valve piece that on the pipeline between check valve and two buffering hydraulic cylinders, is connected; And the stop valve and the pressure gauge that between check valve and two buffering hydraulic cylinders, are connected; It is characterized in that: described buffering control valve piece is made of the cone valve that is connected in parallel, two pressure valve, ratio electromagnetic relief valves and the adjustable throttling that is serially connected in before one of them pressure valve.
CN 200620027038 2006-08-16 2006-08-16 Hydraulic control system for hydraulic machine buffer Expired - Fee Related CN2936702Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620027038 CN2936702Y (en) 2006-08-16 2006-08-16 Hydraulic control system for hydraulic machine buffer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620027038 CN2936702Y (en) 2006-08-16 2006-08-16 Hydraulic control system for hydraulic machine buffer

Publications (1)

Publication Number Publication Date
CN2936702Y true CN2936702Y (en) 2007-08-22

Family

ID=38360721

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620027038 Expired - Fee Related CN2936702Y (en) 2006-08-16 2006-08-16 Hydraulic control system for hydraulic machine buffer

Country Status (1)

Country Link
CN (1) CN2936702Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103032409A (en) * 2012-12-27 2013-04-10 广州市阿盖特科技有限公司 Flexible buffer device for dredger harrow pipe
CN103157701A (en) * 2011-12-14 2013-06-19 银川海力特液压机械有限公司 Straightening machine with hydraulic spring loop
CN104011399A (en) * 2012-01-25 2014-08-27 萱场工业株式会社 Circuit pressure control apparatus, hydraulic pressure control circuit using this circuit pressure control apparatus, and hydraulic pressure control circuit of construction equipment
CN105544643A (en) * 2015-12-31 2016-05-04 湖南瑞龙重工科技有限公司 Pressure stabilization control system of pitching oil cylinders of active carry-scraper
CN109263135A (en) * 2018-08-24 2019-01-25 重庆艾格赛汽车用品有限公司 A kind of hydraulic control system of molding apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103157701A (en) * 2011-12-14 2013-06-19 银川海力特液压机械有限公司 Straightening machine with hydraulic spring loop
EP2806171B1 (en) * 2012-01-25 2017-03-29 KYB Corporation Hydraulic circuit comprising a circuit pressure control unit
CN104011399A (en) * 2012-01-25 2014-08-27 萱场工业株式会社 Circuit pressure control apparatus, hydraulic pressure control circuit using this circuit pressure control apparatus, and hydraulic pressure control circuit of construction equipment
EP2806171A1 (en) * 2012-01-25 2014-11-26 Kayaba Industry Co., Ltd. Circuit pressure control apparatus, hydraulic pressure control circuit using this circuit pressure control apparatus, and hydraulic pressure control circuit of construction equipment
US9080582B2 (en) 2012-01-25 2015-07-14 Kayaba Industry Co., Ltd. Circuit pressure control device, hydraulic control circuit using circuit pressure control unit, and hydraulic control circuit of construction machine
CN103032409A (en) * 2012-12-27 2013-04-10 广州市阿盖特科技有限公司 Flexible buffer device for dredger harrow pipe
CN105544643A (en) * 2015-12-31 2016-05-04 湖南瑞龙重工科技有限公司 Pressure stabilization control system of pitching oil cylinders of active carry-scraper
CN109263135A (en) * 2018-08-24 2019-01-25 重庆艾格赛汽车用品有限公司 A kind of hydraulic control system of molding apparatus

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee