CN103192486B - All-electric ejecting-type super-speed injection molding machine - Google Patents
All-electric ejecting-type super-speed injection molding machine Download PDFInfo
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- CN103192486B CN103192486B CN201310095357.8A CN201310095357A CN103192486B CN 103192486 B CN103192486 B CN 103192486B CN 201310095357 A CN201310095357 A CN 201310095357A CN 103192486 B CN103192486 B CN 103192486B
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Abstract
The invention discloses an all-electric ejecting-type super-speed injection molding machine which mainly comprises a mold closing mechanism, an injecting device and a rack. The injecting device comprises a nozzle, a machine cylinder, a heating ring, a screw, a feeding hopper, a hopper seat, a mobile device, a draw bar, a plastifying device, an injecting seat, an ejecting device and an ejecting seat. The nozzle, the machine cylinder, the screw, the hopper seat and the plastifying device are connected with the injecting seat sequentially in an axis aligning way. The ejecting device comprises an electromagnetic ejector and an ejecting sliding block. The tail end of the ejector is fixed on the ejecting seat and is capable of performing relative motion on an ejecting platform along with the injecting device. The ejecting sliding block slides on the electromagnetic ejector and one end of the ejecting sliding block is connected with the injecting seat. During injection, the ejecting sliding block is driven to move forwards by the electromagnetic ejector, so that the injecting seat is driven to move forward and the screw is driven to inject forwards finally. The injection molding rack has the advantages of high responsiveness, saving energy, protecting environment and the like. Thus, the problems of high energy consumption and difficulty in increasing speed of hydraulic-type super-speed injection molding machines are solved. The mechanical mechanism becomes simple and the assembly difficulty is reduced.
Description
Technical field
The present invention relates to a kind of injection moulding machine, belong to polymer material molding mechanical field.
Background technology
Injection moulding is a kind of important means of plastic shaping, not only can produce baroque goods, and precision is high, beautiful design, production efficiency are high, and the market demand is wide.In recent years, along with the raising of processing of high molecular material forming technique, high accuracy, super-thin plastic goods have been widely used in the fields such as 3C Product, medicine equipment, automobile, optics.The forming requirements of ultralight for meeting, ultra-thin, ultraprecise plastic products, the all-electric injection molding apparatus that exploitation has superelevation injection speed and a higher injection pressure has become the focus of molding machine industry.
In general, injection speed reaches 800mm/s or above injection mo(u)lding is called ultrahigh speed injection.Ultrahigh speed injection molding apparatus provides the injection speed of superelevation and higher injection pressure taking its powerful driving-energy as melt.Because ultrahigh speed injection mo(u)lding has unique shaping characteristic such as high speed and high pressure, melt fluid ability in die cavity is improved, thereby it is thin and cause the too fast cooling filling difficulty causing to overcome wall.Ultrahigh speed injection has proposed the harsh requirement such as high response speed and control accuracy to injection molding apparatus, and injection device need to possess the driving-energy and the control accuracy that within the utmost point short time, realize screw rod speed-raising.
The moulding object of ultralight for realizing, ultra-thin, ultraprecise plastic products, people have just made corresponding effort on injection mechanism.At first, in view of the restriction of technology at that time, ultrahigh speed injection realizes by hydraulic energy-accumulating.Hydraulic pressure ultrahigh speed injection machine need to be equipped with jumbo external accumulator and large displacement hydraulic pump, and the energy discharging by accumulator is realized ultrahigh speed injection.But hydraulic pressure ultrahigh speed injection machine has the shortcomings such as energy consumption is large, volume is large, response speed is low, restricts its development.Along with the rise of electric injection molding machine, Japanese Fanuc company has released the all-electric ultrahigh speed injection machine that relies on the injection of linear electric motors drive screw.After this, all-electric ultrahigh speed injection machine is driven and is realized ultrahigh speed injection by heavy-duty motor, and injection speed can be up to 2000mm/s, have control accuracy high, respond the advantages such as rapid, but it has proposed harsh requirement to injecting motor and ball-screw.
Patent 200910093523.4 discloses a kind of ultrahigh speed injection device.This device adopts and in injection cylinder, has been equipped with speedup spring, utilizes spiro rod plasticizing to retreat spring-compressed, time to be injected, and injection cylinder oil-feed, spring discharges, and with the elastic potential energy fluid,matching pressing system of spring, lead-screw is injected forward.By this device, save external accumulator, simplify equipment mechanism, reduce the requirement of servomotor and ball-screw, and reduced cost.
Engel company has proposed melt expansion injection (X-MELT) technology, by injecting front precommpression polymer melt, in the time of injection, completes ultrahigh speed injection by the expansion of compression melt.But this ultrahigh speed injection technique, need to be equipped with a whole set of control appliance, need in addition to equip the controlled needle-valve of high pressure, relate to the technical problem of front-end control, technical difficulty is large.
Japanology personnel have proposed weight drop formula ultrahigh speed injection molding forming method.Utilize the gravitional force of weight drop to change into the driving-energy of injection, realize ultrahigh speed injection.Fall to clashing into injection ram by weight, can realize at short notice injection device speed-raising, but the wear problem of device is difficult to solve.
Nissei Plastic Industrial Co., Ltd has developed NEX110-6EH ultrahigh speed high-pressure injection moulding machine recently.It is by two low inertia servomotors of equipment.Connect common drive screw injection by Timing Belt, reduced the harsh requirement to ball-screw and servomotor, injection speed can reach 1000mm/s, and injection pressure can reach 295MPa, is applicable to the thin-wall precise products such as shaping thin light guide panel, thin-walled media card.But the synchronism of Dual-motors Driving is difficult to ensure, becomes the technical bottleneck of Dual-motors Driving ultrahigh speed injection machine.
Summary of the invention
The all-electric ejection type super speed injection molding machine of one of the present invention is realized ultrahigh speed injection by electromagnetic launch.The object of the invention is to solve technical barrier and the defect that existing ultrahigh speed injection machine exists, the all-electric ultrahigh speed injection machine of a kind of high response, high control precision, high performance-price ratio is provided for this reason.
For achieving the above object, the present invention by the following technical solutions: a kind of all-electric ejection type super speed injection molding machine, is mainly made up of mold closing mechanism, injection device and frame.Mold closing mechanism and injection device are positioned in frame, and mold closing mechanism is identical with conventional electric injection molding machine with frame; Injection device is by nozzle, machine barrel, heating collar, screw rod, loading hopper, hopper, mobile device, pull bar, plasticizing apparatus, injection seat, catapult-launching gear, ejector-seat and penetrate platform and form; Nozzle, machine barrel, screw rod, hopper, plasticizing apparatus are connected with injection seat successively axial alignment; Penetrate platform and be fixed in frame, injection device is arranged on to be penetrated on platform, and under the control of mobile device, can do the motion of phase correlation platform, and loading hopper is arranged on hopper, and screw rod is positioned at machine barrel, and heating collar is wrapped in outside machine barrel; Hopper, injection seat and ejector-seat are connected and fixed by four pull bar symmetries; Plasticizing apparatus forms by plastifying motor, plasticizing tooth form synchronous belt and belt wheel, and plasticizing motor is fixed on injection seat, and screw rod tail is fixedly connected with plasticizing belt wheel, and while realizing plasticizing, screw rod rotatablely moves; Catapult-launching gear is by Electromagnetical ejector and launch slide block and form, catapult-launching gear end is fixed on ejector-seat, can penetrate relative motion on platform with injection device, launch slide block slides on Electromagnetical ejector, launch slide block one end and be connected with injection seat, in when injection, drive and launch slide block and travel forward by Electromagnetical ejector, thereby drive injection seat to move forward, final drive screw is injected forward.
A kind of all-electric ejection type super speed injection molding machine injection device of the present invention is the injection of electromagnetic launch formula, replaces the all-electric injection device of traditional motor driven ball screws.Power using electromagnetic force as injection, because the driving-energy of Electromagnetical ejector is enough large, thereby easily realizes ultrahigh speed injection.
A kind of all-electric ejection type super speed injection molding machine injection device of the present invention is injected forward by catapult-launching gear drive screw.Utilize the magnetic field that in Electromagnetical ejector, hot-wire coil produces to accelerate to launching slide block, thereby realize the conversion of screw drive power.When injection, give the coil electricity in Electromagnetical ejector, thus launch effect that slide block is subject to electromagnetic force relatively Electromagnetical ejector slide.Thus, launch slipper push injection seat and advance, thereby make screw rod complete action of injection, its terminating point can be controlled by travel switch or displacement transducer.
A kind of all-electric ejection type super speed injection molding machine injection device of the present invention requires to launch the effect axis of slide block and injection seat and the dead in line of screw rod, stress balance while ensureing high speed injection.In addition, require injection device to have enough rigidity, ensure to launch slide block energy linear slide in the time of injection, when injection, injection seat is mobile smooth-going between pull bar, and the resistance of motion is little.
A kind of all-electric ejection type super speed injection molding machine of the present invention compared with prior art, has been avoided the synchronism problem of the compound driving of bi-motor, also again without injecting motor being proposed to harsh requirement.In addition, by electromagnetic launch injection device, not only make it there is the advantage such as high responsiveness, energy-conserving and environment-protective, and solved the difficult problems such as the energy consumption of fluid pressure type ultrahigh speed injection machine is large, speed-raising is difficult, also solved the melt technical barriers such as the controlled needle-valve of injection (X-MELT) front end high that expand.And electromagnetic launch injection device becomes simply the mechanical mechanism of all-electric injection device, assembly difficulty reduces.
Brief description of the drawings
Fig. 1 is the schematic diagram of a kind of all-electric ejection type super speed injection molding machine of the present invention.
Fig. 2 is the injection device schematic diagram of a kind of all-electric ejection type super speed injection molding machine of the present invention.
Fig. 3 is the enlarged diagram that launches part of a kind of all-electric ejection type super speed injection molding machine injection device of the present invention shown in Fig. 2.
In figure: 1-mold closing mechanism, 2-injection device, 3-frame, 4-nozzle, 5-machine barrel, 6-heating collar, 7-screw rod, 8-mobile device, 9-hopper, 10-loading hopper, 11-plasticizing apparatus, 12-plasticizing tooth form synchronous belt and belt wheel, 13-plastifies motor, 14-injection seat, 15-launches slide block, 16-catapult-launching gear, 17-Electromagnetical ejector, 18-pull bar, 19-ejector-seat, 20-penetrates platform
Detailed description of the invention
As shown in Figure 1, a kind of all-electric ejection type super speed injection molding machine of the present invention, is mainly made up of mold closing mechanism 1, injection device 2 and frame 3, and mold closing mechanism 1 and injection device 2 are positioned in frame 3, and its mold closing mechanism is identical with conventional electric injection molding machine with frame.
As shown in Figure 2, injection device 2 is by nozzle 4, machine barrel 5, heating collar 6, screw rod 7, loading hopper 10, hopper 9, mobile device 8, pull bar 18, plasticizing apparatus 11, injection seat 14, catapult-launching gear 16, ejector-seat 19 with penetrate platform 20 and form; Nozzle 4, machine barrel 5, screw rod 7, hopper 9, plasticizing apparatus 11 are connected with injection seat 14 successively axial alignment; Penetrate platform 20 and be fixed in frame 3, injection device 2 is arranged on to be penetrated on platform 20, and under the control of mobile device 8, can make phase correlation platform 20 and move, and loading hopper 10 is arranged on hopper 9, and screw rod 7 is positioned at machine barrel 5, and heating collar 6 is wrapped in outside machine barrel 5; Hopper 9, injection seat 14 and ejector-seat 19 are connected and fixed by four pull bar 18 symmetries; Plasticizing apparatus 11 is made up of plasticizing motor 13, plasticizing tooth form synchronous belt and belt wheel 12, and plasticizing motor 13 is fixed on injection seat 14, and screw rod 7 afterbodys are fixedly connected with plasticizing belt wheel 12, and while realizing plasticizing, screw rod 7 rotatablely moves; Catapult-launching gear 16 is by Electromagnetical ejector 17 and launch slide block 15 and form, catapult-launching gear 16 ends are fixed on ejector-seat 19, can penetrate relative motion on platform 20 with injection device 2, launch slide block 15 slides on Electromagnetical ejector 17, launch slide block 15 one end and be connected with injection seat 14, in the time of injection, launch slide block 15 by Electromagnetical ejector 17 drivings and travel forward, thereby drive injection seat 14 to move forward, finally order about screw rod 7 and inject forward.
As shown in Fig. 3, catapult-launching gear 16 is arranged in injection seat 14 and ejector-seat 19, and injection seat 14 and ejector-seat 19 are connected and fixed by four pull bars 18.Launch slide block 15 and be connected and fixed with injection seat 14, launch slide block 15 and can on Electromagnetical ejector 17, slide front and back, can drive thus injection seat 14 to move forward and backward on pull bar 18.Launching slide block 15 can be free to slide according to injection molding requirement on the track of Electromagnetical ejector 17.
A kind of all-electric ejection type super speed injection molding machine of the present invention, injection device 2 requires to launch slide block 15 and the effect axis of injection seat 14 and the dead in line of screw rod 7, stress balance while ensureing high speed injection.In addition, require injection device 2 to have enough rigidity, ensure to launch slide block 15 energy linear slide in the time of injection, when injection, injection seat 14 is smooth-going in 18 movements of pull bar, and the resistance of motion is little.
In the preformed stage of cycle period, plasticizing motor 13 starts, and drives screw rod 7 rotation plasticizings, now, control system for shot machine is oppositely switched on according to pressure signal control Electromagnetical ejector 17, and drive is launched slide block 15 and retreated, and retreats by the drive screw 7 that retreats of injection seat 14.After plasticizing finishes, control system for shot machine sends injection signal, and Electromagnetical ejector 17 forward energisings, are delivered to power on injection seat 14 by launching slide block 15, drive injection seat 14 to move forward, entering die cavity realizes ultrahigh speed injection moulding at a high speed to make screw rod 7 promote melt.
Claims (2)
1. an all-electric ejection type super speed injection molding machine, mainly formed by mold closing mechanism, injection device and frame, mold closing mechanism and injection device are positioned in frame, mold closing mechanism is identical with conventional electric injection molding machine with frame, it is characterized in that: injection device is made up of nozzle, machine barrel, heating collar, screw rod, loading hopper, hopper, mobile device, pull bar, plasticizing apparatus, injection seat, catapult-launching gear, ejector-seat; Nozzle, machine barrel, screw rod, hopper, plasticizing apparatus are connected with injection seat successively axial alignment; Penetrate platform and be fixed in frame, injection device is arranged on to be penetrated on platform, and under the control of mobile device, can do the motion of phase correlation platform, and loading hopper is arranged on hopper, and screw rod is positioned at machine barrel, and heating collar is wrapped in outside machine barrel; Hopper, injection seat and ejector-seat are connected and fixed by four pull bar symmetries; Plasticizing apparatus forms by plastifying motor, plasticizing tooth form synchronous belt and belt wheel, and plasticizing motor is fixed on injection seat, and screw rod tail is fixedly connected with belt wheel, and while realizing plasticizing, screw rod rotatablely moves; Catapult-launching gear is by Electromagnetical ejector and launch slide block and form, and catapult-launching gear end is fixed on ejector-seat, can penetrate relative motion on platform with injection device, launches slide block and slides on Electromagnetical ejector, launches slide block one end and is connected with injection seat.
2. the all-electric ejection type super speed injection molding machine of one according to claim 1, is characterized in that: launch the effect axis of slide block and injection seat and the dead in line of screw rod.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310095357.8A CN103192486B (en) | 2013-03-24 | 2013-03-24 | All-electric ejecting-type super-speed injection molding machine |
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| CN201310095357.8A CN103192486B (en) | 2013-03-24 | 2013-03-24 | All-electric ejecting-type super-speed injection molding machine |
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| CN103192486B true CN103192486B (en) | 2014-12-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103862644A (en) * | 2014-03-21 | 2014-06-18 | 苏州益群模具有限公司 | Injection molding machine of automobile injection mould |
| CN106142447B (en) * | 2016-08-05 | 2018-05-15 | 苏州锦珂塑胶科技有限公司 | A kind of injection moulding apparatus of single servo motor driving |
| CN108638428B (en) * | 2018-07-17 | 2023-08-08 | 北京化工大学 | Ammunition detonation type ultra-high-speed injection molding machine |
Citations (5)
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|---|---|---|---|---|
| CN2649314Y (en) * | 2003-04-24 | 2004-10-20 | 香港生产力促进局 | Injection device of miniature plastic part with superhigh speed precision pressure control |
| JP2009234063A (en) * | 2008-03-27 | 2009-10-15 | Toshimichi Nishizawa | Injection molding machine and method of injection molding using it |
| CN201380580Y (en) * | 2009-04-11 | 2010-01-13 | 广东伊之密精密机械有限公司 | Super-high speed injection mechanism of injection machine |
| CN201506011U (en) * | 2009-10-12 | 2010-06-16 | 北京化工大学 | Ultrahigh speed injection molding machine |
| CN203381097U (en) * | 2013-03-24 | 2014-01-08 | 北京化工大学 | All-electric ejection type ultra-high-speed injection molding machine |
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- 2013-03-24 CN CN201310095357.8A patent/CN103192486B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2649314Y (en) * | 2003-04-24 | 2004-10-20 | 香港生产力促进局 | Injection device of miniature plastic part with superhigh speed precision pressure control |
| JP2009234063A (en) * | 2008-03-27 | 2009-10-15 | Toshimichi Nishizawa | Injection molding machine and method of injection molding using it |
| CN201380580Y (en) * | 2009-04-11 | 2010-01-13 | 广东伊之密精密机械有限公司 | Super-high speed injection mechanism of injection machine |
| CN201506011U (en) * | 2009-10-12 | 2010-06-16 | 北京化工大学 | Ultrahigh speed injection molding machine |
| CN203381097U (en) * | 2013-03-24 | 2014-01-08 | 北京化工大学 | All-electric ejection type ultra-high-speed injection molding machine |
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