CN103170531A - Electro-hydraulic synchronization numerically controlled bending machine servo pump driving device - Google Patents

Electro-hydraulic synchronization numerically controlled bending machine servo pump driving device Download PDF

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Publication number
CN103170531A
CN103170531A CN2013100911132A CN201310091113A CN103170531A CN 103170531 A CN103170531 A CN 103170531A CN 2013100911132 A CN2013100911132 A CN 2013100911132A CN 201310091113 A CN201310091113 A CN 201310091113A CN 103170531 A CN103170531 A CN 103170531A
Authority
CN
China
Prior art keywords
valve
oil
quantitative pump
bending machine
pump
Prior art date
Application number
CN2013100911132A
Other languages
Chinese (zh)
Inventor
郑长玉
郑小平
方明福
徐家满
王仁春
潘锋
赵文祥
Original Assignee
安徽中德机床股份有限公司
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 安徽中德机床股份有限公司 filed Critical 安徽中德机床股份有限公司
Priority to CN2013100911132A priority Critical patent/CN103170531A/en
Publication of CN103170531A publication Critical patent/CN103170531A/en

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Abstract

The invention discloses an electro-hydraulic synchronization numerically controlled bending machine servo pump driving device which comprises an oil tank, a rack, a servo motor and a bidirectional quantitative pump, wherein the rack is arranged at the rear side of the oil tank, the servo motor and the bidirectional quantitative pump are connected through a coupler and fixed on a connecting seat through a bolt so that synchronous running is achieved, the connecting seat is welded at the rear portion of the rack, an oil in-out opening of the bidirectional quantitative pump is controlled by a shuttle valve, a forward oil opening is connected with a rodless cavity of an oil cylinder through a prefill valve, a backward oil opening is connected with a rod cavity of the oil cylinder through a counterbalance valve and a poppet valve, and the oil in-out opening of the bidirectional quantitative pump is connected with the oil tank. Due to the fact that a capacity speed adjusting theory of the servo motor with the bidirectional quantitative pump is adopted, speed of the servo motor is changed so that output flow of an oil pump is changed, requirements of loading speed of various work conditions are met, energy loss is reduced, efficiency of the system is improved, energy consumption is relatively reduced, and use cost of a user is reduced.

Description

A kind of electric liquid synchronous digital control bending machine servopump drive unit

Technical field:

The present invention relates to electric liquid synchronous digital control bending machine actuation techniques field, be specifically related to a kind of servopump drive unit.

Background technology:

Electricity liquid synchronous digital control bending machine with angle programming, unidirectional location, multistep programme, automatically change step, the function such as logic control, but have the reduction work difficulty, increase work efficiency, the advantages such as improving product precision, minimizing operating noise unbalance loading.The fluid power system principle of present domestic electric liquid synchronous digital control bending machine is similar, for three phase electric machine drives the process that oil pump rotates oil suction, oil extraction, adopts the throttle grverning principle in hydraulic system, and energy consumption is large, temperature rise is large, efficient is low, parts are fragile.Therefore imagination provides a kind of equipment to solve this problem.

Summary of the invention:

The objective of the invention is for domestic Industry, aim at a kind of Novel servo pump drive that electric liquid synchronous digital control bending machine proposes; The present invention adopts servomotor to add the volumetric speed control principle of two-way quantitative pump, utilize the servomotor speed change to change the output flow of oil pump, to adapt to the demand of the various operating mode speed of load, reduced energy loss, improve the efficient of system, relatively also just reduced energy resource consumption.

The technical solution used in the present invention is:

A kind of electric liquid synchronous digital control bending machine servopump drive unit, comprise fuel tank, frame, servomotor and two-way quantitative pump, it is characterized in that: the fuel tank rear side is provided with frame, servomotor is connected, is fixed by screws in by shaft coupling with the two-way quantitative pump realizes run-in synchronism on Connection Block, Connection Block is welded on the rear portion of frame; The oil inlet and outlet of two-way quantitative pump is controlled through shuttle valve, and the forward hydraulic fluid port connects the rodless cavity of oil cylinder through prefill valve, oppositely counterbalance valve and the poppet valve rod chamber that connect oil cylinder of hydraulic fluid port on the valve group; The oil inlet and outlet of two-way quantitative pump is connected to fuel tank.

Described servomotor is connected to digital control system, but adjusting rotary speed.

The prefill valve of described oil cylinder rodless cavity has replaced proportioning valve.

The reverse hydraulic fluid port of described two-way quantitative pump connects the rod chamber of oil cylinder through counterbalance valve and poppet valve.

Compared with prior art, beneficial effect of the present invention is:

The present invention uses the closed-loop control system of volumetric speed control principle, realizes the rotating of two-way quantitative pump with the rotating function of servomotor, the final flow direction that realizes relying on oil pump change fluid.In process, slide block will carry out a series of compulsory exercise, and not only fluid flows to differently when carrying out different actions, and the flow of fluid also changes thereupon.The flow that changes the rotating speed of servomotor and change pump finally changes the speed of service of slide block, has reduced resistance and the system leak of reversal valve, has reduced energy loss.Under the setting of this device, when servomotor started, the starting power of two-way quantitative pump when dry run was minimum simultaneously.In pressurize and off-load stage, the output of fluid seldom, oil pump almost can shut down, greatly degree has reduced energy resource consumption.At last, under the setting of this device, reduce quantity, the caloric value of control valve, also just reduced probability of failure.Show by test and calculating, this covering device can energy-conservationly surpass 25%.

Description of drawings:

Fig. 1 is overall structure schematic diagram of the present invention.

Fig. 2 is servomotor of the present invention and two-way quantitative pump part-structure schematic diagram.

The specific embodiment:

In order to make the technology of the present invention characteristics, feature, technique effect of the present invention, purpose of design are easier to understand, and below in conjunction with legend, the present invention are further elaborated.

As shown in Figure 1, servomotor 1 is connected with Connection Block by shaft coupling 3 with two-way quantitative pump 2 and is connected, and is welded on side frame 8 rear portions after fuel tank.The oil inlet and outlet 6 of two-way quantitative pump is controlled through shuttle valve 5, and the forward hydraulic fluid port connects the rodless cavity 11 of oil cylinder through prefill valve 7, oppositely counterbalance valve and the poppet valve rod chamber 12 that connect oil cylinder of hydraulic fluid port on valve group 10; Oil inlet and outlet 6 connected tanks 9 of two-way quantitative pump.

During work: starter motor, according to the difference of working stage, control by the pressure selection of shuttle valve, realize bidirection press output.In slide block fast lower time,, servomotor drives two-way quantitative pump forward, and oil pump output fluid enters rodless cavity by prefill valve, and oil cylinder is downward fast.Oil pump rod chamber fluid sucks the oil sucting cavity of two-way quantitative pump.During backhaul, servomotor drives the counter-rotating of two-way quantitative pump, and oil cylinder rodless cavity fluid flows back to fuel tank, and another road binders liquid enters the oil cylinder cavity of resorption, and oil cylinder is upwards backhaul fast.Opening speed can change by the rotating speed that digital control system is controlled servomotor.

The present invention aims at electric liquid synchronous digital control bending machine to support the use, and adopts the closed-loop control system of volumetric speed control principle, have energy-efficient, reduce component aging, improve hydraulic oil service life, reduce the characteristics of customer using cost.

Above-described embodiment is only better embodiment of the present invention, and in addition, the present invention can also have other implementations.Need to prove, under the prerequisite that does not break away from the present invention's design, within any apparent improvement and modification all should fall into protection scope of the present invention.

Claims (4)

1. electric liquid synchronous digital control bending machine servopump drive unit, comprise fuel tank, frame, servomotor and two-way quantitative pump, it is characterized in that: the fuel tank rear side is provided with frame, servomotor is connected, is fixed by screws in by shaft coupling with the two-way quantitative pump realizes run-in synchronism on Connection Block, Connection Block is welded on the rear portion of frame; The oil inlet and outlet of two-way quantitative pump is controlled through shuttle valve, and the forward hydraulic fluid port connects the rodless cavity of oil cylinder through prefill valve, oppositely counterbalance valve and the poppet valve rod chamber that connect oil cylinder of hydraulic fluid port on the valve group; The oil inlet and outlet of two-way quantitative pump is connected to fuel tank.
2. electric liquid synchronous digital control bending machine servopump drive unit according to claim 1, it is characterized in that: described servomotor is connected to digital control system, but adjusting rotary speed.
3. electric liquid synchronous digital control bending machine servopump drive unit according to claim 1, it is characterized in that: the prefill valve of described oil cylinder rodless cavity has replaced proportioning valve.
4. electric liquid synchronous digital control bending machine servopump drive unit according to claim 1 is characterized in that: counterbalance valve and the poppet valve rod chamber that connect oil cylinder of the reverse hydraulic fluid port of described two-way quantitative pump on the valve group.
CN2013100911132A 2013-03-21 2013-03-21 Electro-hydraulic synchronization numerically controlled bending machine servo pump driving device CN103170531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013100911132A CN103170531A (en) 2013-03-21 2013-03-21 Electro-hydraulic synchronization numerically controlled bending machine servo pump driving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013100911132A CN103170531A (en) 2013-03-21 2013-03-21 Electro-hydraulic synchronization numerically controlled bending machine servo pump driving device

Publications (1)

Publication Number Publication Date
CN103170531A true CN103170531A (en) 2013-06-26

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CN2013100911132A CN103170531A (en) 2013-03-21 2013-03-21 Electro-hydraulic synchronization numerically controlled bending machine servo pump driving device

Country Status (1)

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CN (1) CN103170531A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105065349A (en) * 2015-07-20 2015-11-18 江苏力威剪折机床有限公司 Hydraulic device of bending machine
CN105642710A (en) * 2016-04-18 2016-06-08 江苏久日数控机床有限公司 Servo dual-pump-control numerical control bending machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513413A (en) * 2011-12-03 2012-06-27 南京埃尔法电液技术有限公司 Hydraulic control system for novel servo pump control bending machine
CN202356469U (en) * 2011-12-03 2012-08-01 南京埃尔法电液技术有限公司 Novel hydraulic control system of servo pump-controlled bending machine
CN203265338U (en) * 2013-03-21 2013-11-06 安徽中德机床股份有限公司 Servo pump driving device for electro-hydraulic synchronous numerical-control bending machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513413A (en) * 2011-12-03 2012-06-27 南京埃尔法电液技术有限公司 Hydraulic control system for novel servo pump control bending machine
CN202356469U (en) * 2011-12-03 2012-08-01 南京埃尔法电液技术有限公司 Novel hydraulic control system of servo pump-controlled bending machine
CN203265338U (en) * 2013-03-21 2013-11-06 安徽中德机床股份有限公司 Servo pump driving device for electro-hydraulic synchronous numerical-control bending machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105065349A (en) * 2015-07-20 2015-11-18 江苏力威剪折机床有限公司 Hydraulic device of bending machine
CN105642710A (en) * 2016-04-18 2016-06-08 江苏久日数控机床有限公司 Servo dual-pump-control numerical control bending machine

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Application publication date: 20130626

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