CN104260294A - Electric-hydraulic hybrid injection mechanism - Google Patents

Electric-hydraulic hybrid injection mechanism Download PDF

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Publication number
CN104260294A
CN104260294A CN201410522326.0A CN201410522326A CN104260294A CN 104260294 A CN104260294 A CN 104260294A CN 201410522326 A CN201410522326 A CN 201410522326A CN 104260294 A CN104260294 A CN 104260294A
Authority
CN
China
Prior art keywords
hydraulic
electric
hydraulic cylinder
injection
push pedal
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.)
Pending
Application number
CN201410522326.0A
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Chinese (zh)
Inventor
陈国永
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN201410522326.0A priority Critical patent/CN104260294A/en
Publication of CN104260294A publication Critical patent/CN104260294A/en
Priority to PCT/CN2015/000629 priority patent/WO2016050002A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
    • B29C45/54—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76545—Flow rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76595—Velocity

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to an electric-hydraulic hybrid injection mechanism. The electric-hydraulic hybrid injection mechanism comprises a push plate which is connected with a screw connector, wherein the push plate is connected with an electric driving component; the electric-hydraulic hybrid injection mechanism is characterized in that the push plate is further connected with a piston or a cylinder barrel of a hydraulic cylinder; the hydraulic cylinder is connected with a hydraulic valve; the hydraulic valve is connected with a central control system of an injection molding machine; the electric driving component comprises a ball screw pair in driving connection with the push plate; the ball screw pair is connected with a driving motor through a transmission component. Compared to the prior art, in the invention, the electric driving component is matched with the hydraulic cylinder for use, so as to provide powerful injection power at the moment of injecting a molten ingot; the electric driving mechanism can easily and accurately control the injection amount of the molten ingot, so as to ensure the product quality. Meanwhile, as the electric driving component is matched with the hydraulic cylinder for use, the configuration requirements and the running environment requirements on the electric driving component and the hydraulic cylinder are lowered; furthermore, compared to separate application of electric driving or hydraulic driving, the energy consumption is greatly reduced.

Description

The hybrid ejecting mechanism of electric hydaulic
Technical field
The present invention relates to a kind of injection machine field, especially the melt ejecting mechanism of injection machine.
Background technology
Injection machine is conventional plastic molding machinery.On injection machine, each parts are function-differentiated generally includes Dosing unit, heating plasticizing unit, injection filling mould unit, locked mode pressurize unit, cooling unit and discharging unit.These functional units cooperatively interact, and complete plastic parts moulding.
Wherein injection filling mould unit has been come by ejecting mechanism.Ejecting mechanism generally includes the push pedal of moving with certain speed for lead-screw and screw rod connector, and the requirement melt of screw motion is injected in mold cavity with enough large injection speed at short notice, will ensure accurate injection volume simultaneously.Usually high injection speed and accurate injection volume could meet could obtain high-quality product.
Existing ejecting mechanism has hydraulic-driven and motorized motions two kinds of structures.
Wherein, hydraulic-driven drives push pedal by oil cylinder, and oil cylinder is controlled by hydraulic valve, and hydraulic valve is controlled by central control module.Movement velocity and the displacement of push pedal in injection process control by hydraulic oil cylinder driving.Its advantage is power foot, can meet the requirement of injection speed; Shortcoming is speed and the displacement that accurately cannot control push pedal, causes the error of injection volume; If use servo valve, servo valve is expensive and high to the requirement of hydraulic system, cost large, and the highly energy-consuming of hydraulic system is also unavoidable in addition.
Motorized motions is that motor drives ball screw assembly, action by gear train (or synchronous pulley).Supply power to gear by motor, gear driven ball screw assembly, drives push pedal campaign, thus completes action of injection.Motorized motions can realize the accurate control of injection volume by encoder; Because motor reaches maximum (top) speed need to overcome powerful injection resistance from starting to, servomotor is difficult to provide enough power at short notice, and cause injecting low-response, issuing velocity is inadequate, thus causes the application of injection machine limited.Inject required powerful driving force in addition to be obtained by driving ball screw assembly, by motor, ball screw assembly, must can bear the heavy duty in driving process, general ball screw assembly, is not competent, the ball screw assembly, price general charged bearing heavy duty is very expensive, life-span is also short, have impact on the use of electric injection molding machine.
Summary of the invention
Technical problem to be solved by this invention provides a kind of for the present situation of prior art to provide enough injection driving forces at short notice thus ensure injection speed and accurately can control the hybrid ejecting mechanism of electric hydaulic of injection volume, meanwhile, this ejecting mechanism also has that energy consumption is low, the advantage of reduced investment.
The present invention solves the problems of the technologies described above adopted technical scheme: the hybrid ejecting mechanism of this electric hydaulic, comprise the push pedal be connected with screw rod connector, described push pedal connects power drive assemblies, it is characterized in that the described push pedal also piston of connecting fluid cylinder pressure or cylinder barrel, described hydraulic cylinder connecting fluid pressure valve, described hydraulic valve connects the central control system of injection machine.
Described power drive assemblies comprises and drives with described push pedal the ball screw assembly, be connected, and described ball screw assembly, connects drive motors by transmission component.
Compared with prior art, the traditional method of the movement velocity and location parameter that control driven object by the size of driving force and the activation force profile of driving force relative time is innovated by the present invention, therefrom separate to the movement velocity of driven object body and the control of location parameter to the control of driving force, hydraulic system only provides powerful driving force and has nothing to do with the kinematic parameter such as movement velocity and location parameter of driven object and hydraulic-driven power, and the movement velocity of driven object and location parameter are separately by electronic driving mechanism complete independently.
Power drive assemblies in the present invention and hydraulic cylinder with the use of, powerful injection power can be provided in the moment of injection melt, and the accurate control of melt injection volume can be realized easily by electric driving mechanism, ensure that product quality.Meanwhile, due to power drive assemblies and hydraulic cylinder with the use of, reduce both configuration requirements and the requirement of running environment; And relative to hydraulic-driven, energy consumption also significantly reduces; Electric driving force (being also power of motor) is considerably reduced relative to being used alone motorized motions, improve the work operating mode of ball screw assembly, reduce the performance requirement to drive motors, transmission mechanism and ball screw assembly, simultaneously, thus considerably reduce the cost of electric driving mechanism.
The hybrid ejecting mechanism of electric hydaulic provided by the present invention is except can except supporting injection machine uses, be applicable to supporting die casting machine etc. too and require melt etc. with certain speed and Pressure filling mold cavity within the of short duration time, and driven object body requires at short notice by powerful drive force and pinpoint equipment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention;
Fig. 2 is embodiment of the present invention schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As depicted in figs. 1 and 2, the hybrid ejecting mechanism of this electric hydaulic comprises:
Push pedal 1, first end face of push pedal 1 connects the screw rod connector 4 of injection machine, and the pressure sensor 5 be also provided with between screw rod connector and push pedal for detecting pressure in injecting machine material tube, the pressure detected is delivered to central control system 6 by pressure sensor 5, central control system judges according to the data received, and controls the action of correlation function.
Hydraulic cylinder 3, the present embodiment is provided with two, and the piston rod of hydraulic cylinder drives and is connected on the first end face of push pedal.The piston rod of hydraulic cylinder 3 also can be connected on the second end face of push pedal as required; Or, also can be that the cylinder barrel of hydraulic cylinder connects push pedal.Hydraulic cylinder 3 is connected hydraulic power supply by fluid pressure line (not shown) with hydraulic valve 8, and hydraulic valve is connection control system also, is sent the opening and closing of instruction hydraulic control valve, thus make hydraulic cylinder works by control system.Hydraulic valve in the present embodiment is magnetic valve.
Power drive assemblies 2, is converted to rectilinear motion by the rotary motion of motor, thus control push pedal is moved.The power drive assemblies that can realize this function has multiple, and the power drive assemblies 2 in the present embodiment comprises:
Ball screw assembly, 21, its leading screw 211 connection for transmission assembly 22, is driven by transmission component and rotates; Its screw 212 is fixedly connected in push pedal 1.
Speed probe 7, can be connected on motor 23, also can connect ball screw assembly, the present embodiment is connected on ball screw assembly.The output of speed probe 7 connects central control system 6.
Transmission component 22, for by the power transmission of motor 23 to leading screw, it can be gear drive group, also can be pulley drive group, or other transmission component.Can select as required, assembly.
Motor 23, its control end connects the central control system of injection machine, has central control system whether to control the work of motor.
The operation principle of the hybrid ejecting mechanism of this electric hydaulic is described below:
When shooting material in mold cavity after injecting machine material tube melt operation completes, central control system is hydraulic control valve and electric motor starting simultaneously.Because hydraulic system is for pressure, power is large, and therefore in the moment of melt injection, hydraulic cylinder pulls push pedal with enough power and the speed be exceedingly fast.Meanwhile, motor by transmission component by power transmission on leading screw, screw turns drives screw to drive push pedal reach, auxiliary hydraulic system injection melt, thus drive screw 6 movement fast, with enough pressure and speed by the melt injection in barrel, ensure that melt enters speed in mold cavity and pressure, thus ensure that the quality of injecting products; Meanwhile, electric driving mechanism accurately controls the displacement of push pedal, thus accurately controls the injection volume of melt.
In the hybrid ejecting mechanism of this electric hydaulic, the motion of push pedal is driven jointly by hydraulic cylinder and electric driving mechanism, the movement velocity of push pedal and displacement are then complete to be controlled separately by electric driving mechanism, fully can ensure that injection machine shoots material required pressure and speed, and accurately can control injection volume, ensure that the quality of product; Meanwhile, due to power drive assemblies and hydraulic cylinder with the use of, reduce both configuration requirements and the requirement of running environment; And relative to hydraulic-driven, energy consumption also significantly reduces; Considerably reducing electric driving force (being also power of motor) relative to being used alone motorized motions, also significantly improving the work operating mode of ball screw assembly, considerably reducing the cost of electric driving mechanism.

Claims (2)

1. the hybrid ejecting mechanism of electric hydaulic, comprise the push pedal (1) be connected with screw rod connector, described push pedal (1) connects power drive assemblies (2), it is characterized in that piston or the cylinder barrel of connecting fluid cylinder pressure (3) are gone back in described push pedal (1), described hydraulic cylinder (3) connecting fluid pressure valve, described hydraulic valve connects the central control system of injection machine.
2. the hybrid ejecting mechanism of electric hydaulic according to claim 1, it is characterized in that described power drive assemblies (2) comprises the ball screw assembly, (21) driving with described push pedal (1) and be connected, described ball screw assembly, (21) connects drive motors (23) by transmission component (22).
CN201410522326.0A 2014-09-30 2014-09-30 Electric-hydraulic hybrid injection mechanism Pending CN104260294A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201410522326.0A CN104260294A (en) 2014-09-30 2014-09-30 Electric-hydraulic hybrid injection mechanism
PCT/CN2015/000629 WO2016050002A1 (en) 2014-09-30 2015-09-06 Electro-hydraulic hybrid injection mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410522326.0A CN104260294A (en) 2014-09-30 2014-09-30 Electric-hydraulic hybrid injection mechanism

Publications (1)

Publication Number Publication Date
CN104260294A true CN104260294A (en) 2015-01-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410522326.0A Pending CN104260294A (en) 2014-09-30 2014-09-30 Electric-hydraulic hybrid injection mechanism

Country Status (2)

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CN (1) CN104260294A (en)
WO (1) WO2016050002A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016050002A1 (en) * 2014-09-30 2016-04-07 陈国永 Electro-hydraulic hybrid injection mechanism
WO2022041646A1 (en) * 2020-08-28 2022-03-03 金发科技股份有限公司 Overflow trough, injection molding apparatus for manufacturing ddr connector, and quality inspection method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040213871A1 (en) * 2003-04-26 2004-10-28 Krauss-Maffei Kunststofftechnik Gmbh Hybrid injection unit, and injection molding machine with a hybrid injection unit
JP2006088463A (en) * 2004-09-22 2006-04-06 Nissei Plastics Ind Co Control method of electric/oil pressure type injection device
CN1980782A (en) * 2004-07-08 2007-06-13 博世力士乐股份公司 Drive unit
CN204222105U (en) * 2014-09-30 2015-03-25 陈国永 The hybrid ejecting mechanism of electric hydaulic

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
JPH0693962A (en) * 1992-09-11 1994-04-05 Nippon Muugu Kk Driving device
CN2502882Y (en) * 2001-09-26 2002-07-31 宁波高新协力机电液有限公司 Injection control device of injection machine
DE102004033690A1 (en) * 2004-07-09 2006-02-16 Demag Ergotech Gmbh Injection molding machine
CN103950144B (en) * 2014-03-31 2016-07-06 广东顺德立信精密机械有限公司 Electric-hydraulic combined formula injection (mo(u)lding) machine and control method thereof
CN104260294A (en) * 2014-09-30 2015-01-07 陈国永 Electric-hydraulic hybrid injection mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040213871A1 (en) * 2003-04-26 2004-10-28 Krauss-Maffei Kunststofftechnik Gmbh Hybrid injection unit, and injection molding machine with a hybrid injection unit
CN1980782A (en) * 2004-07-08 2007-06-13 博世力士乐股份公司 Drive unit
JP2006088463A (en) * 2004-09-22 2006-04-06 Nissei Plastics Ind Co Control method of electric/oil pressure type injection device
CN204222105U (en) * 2014-09-30 2015-03-25 陈国永 The hybrid ejecting mechanism of electric hydaulic

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016050002A1 (en) * 2014-09-30 2016-04-07 陈国永 Electro-hydraulic hybrid injection mechanism
WO2022041646A1 (en) * 2020-08-28 2022-03-03 金发科技股份有限公司 Overflow trough, injection molding apparatus for manufacturing ddr connector, and quality inspection method

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Application publication date: 20150107