CN102069574A - Rear energy storage type super-high speed plasticizing injection device - Google Patents
Rear energy storage type super-high speed plasticizing injection device Download PDFInfo
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- CN102069574A CN102069574A CN2010105558834A CN201010555883A CN102069574A CN 102069574 A CN102069574 A CN 102069574A CN 2010105558834 A CN2010105558834 A CN 2010105558834A CN 201010555883 A CN201010555883 A CN 201010555883A CN 102069574 A CN102069574 A CN 102069574A
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- 238000002347 injection Methods 0.000 title claims abstract description 137
- 239000007924 injection Substances 0.000 title claims abstract description 137
- 238000004146 energy storage Methods 0.000 title claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 239000010727 cylinder oil Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 238000009825 accumulation Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005520 electrodynamics Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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Abstract
The invention discloses a rear energy storage type super-high speed plasticizing injection device, and belongs to the field of high molecular material machining equipment. The device mainly comprises a nozzle, a barrel, a screw, a heating ring, a charging bucket, an injection table, a charging bucket seat, a hydraulic motor, an injection oil cylinder and a spring adjusting device, wherein the nozzle, the barrel, the charging bucket seat, the hydraulic motor and the injection oil cylinder are connected in alignment with an axis in turn; the super-high speed plasticizing injection device is substantially the same as the plasticizing injection device of the normal injection molding machine; the injection oil cylinder consists of a cylinder barrel, an injection piston, an injection piston rod, a pressure sensor and a speed increasing spring; the speed increasing spring is positioned in an oil chamber of the injection oil cylinder and is close to the tail end; and one end of the speed increasing spring is fixed with the end face of the injection piston, and the end close to the tail end of the injection oil cylinder is a free end or is connected with the spring adjusting device. Energy is stored by the rear control spring energy storage device, and is released during injection to improve the screw injection speed, so that the technical requirement of super-high speed injection is met, and the defects of high cost, difficulty in maintenance, high energy consumption and the like of the conventional super-high speed injection molding machine are overcome well.
Description
Technical field
The present invention relates to the plasticizing injecting device of the injection machine in the Process Technology of Polymer former, especially a kind of plasticizing injecting device of real ultrahigh speed injection.
Background technology
Along with the development of society, progress of science and technology, people have proposed an urgent demand of " ultralight, ultra-thin, ultraprecise " to macromolecule material product.For adapting to this requirement, the ultrahigh speed injection molding technology has just arisen at the historic moment.In general, ultrahigh speed injection moulding has two kinds of implications, and one is meant that with the forming thin-walled goods of the injection speed of superelevation, another then is meant ultrahigh speed circulation forming process, i.e. the moulding cycle is short.
In general, injection speed is called traditional injector below 300mm/s, and injection speed is called the high speed injection machine 300mm/s-800mm/s's, and injection speed then is called the ultrahigh speed injector more than 800mm/s.Ultrahigh speed injection moulding requires the plasticizing system that the injection speed of superelevation and higher injection pressure can be provided, and plasticizing quality is stable, and it is stable to require injector to show in whole forming process in addition, and repeatability is high.
Make a general survey of prior art, mainly contain the raising that following three kinds of modes realize the screw rod fltting speed.
First kind is on the basis of hydraulic type injection machine, realizes the ultrahigh speed injection machine of ultrahigh speed injection by the accumulator that increases big volume.Such ultrahigh speed machine is equipped with two jumbo accumulators usually, at idle phase accumulation energy in accumulator of working cycles, releases energy when injection, reaches the purpose that improves injection speed and injection pressure.
Second kind is to drive action of injection by linear motor to realize the ultrahigh speed injection.By the direct drive screw of linear motor, to reach the ultrahigh speed injection.
The third is to realize by the expand technology controlling and process mode of injection (X-MELT) of melt.The injection process that expands adopts and realizes high speed injection through the precompressed melt self-expanding of high pressure.
Can mainly realize the ultrahigh speed injection at the ultrahigh speed injection machine of industrial realization at present with above three kinds of forms.But these screw drive methods are not optimal.Though hydraulic drive type ultrahigh speed injection machine can reach the purpose of ultrahigh speed injection, fluid pressure type ultrahigh speed injection machine requires to have jumbo accumulator, needs to be equipped with the hydraulic pump of big discharge capacity.In addition, except the function that will finish accumulation of energy, also need in the time of setting, finish and release energy, to reach the performance requirement of ultrahigh speed injection.Therefore, this kind ultrahigh speed injection machine has shortcomings such as power consumption is big, volume is big, noise is big, hydraulic system response difficulty.Electronic ultrahigh speed injection machine by linear motor driven, need 4 linear motors of equipment, though electrodynamic type ultrahigh speed injection machine reaches the performance requirement of ultrahigh speed injection, its injection speed can reach 2000mm/s, and the response time can reach 0.017s, and acceleration can reach 13g (g is an acceleration of gravity), but its cost height, difficult in maintenance, the use cost height is unfavorable for industrialization.Melt expands and injects (X-MELT), by the precommpression melt, finishes the ultrahigh speed injection by the expansion of compression melt when injection.But this ultrahigh speed injection technique relates to the technical problem of front-end control, restricts its development.
Summary of the invention
The same with present most of ultrahigh speed injection machines, ultrahigh speed injection machine of the present invention has identical performance, and is that translational speed by lift-bolt reaches the ultrahigh speed injection.This ultrahigh speed injection machine has basic systems such as screw rod, machine barrel equally, and these structures and existing ultrahigh speed injection machine basically identical.But ultrahigh speed injection machine now exists many shortcomings or the improved place of needs.Technical problem to be solved by this invention is to overcome that the power consumption that present ultrahigh speed injection machine exists is big, control accuracy is low, quicken problems such as difficulty, and a kind of simple in structure, easy to operate, working stability, ultrahigh speed injection machine that cost performance is high are provided for this reason.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
A kind of rearmounted energy-storage type ultrahigh speed plasticizing injecting device mainly is made up of nozzle, machine barrel, screw rod, heating collar, loading hopper, She Tai, hopper seat, hydraulic motor, injection cylinder and spring regulating device.Nozzle, machine barrel, hopper seat, hydraulic motor are connected with injection cylinder axial alignment successively, penetrate platform and be placed on the frame, loading hopper is arranged on to be penetrated on the platform, and screw rod is positioned at machine barrel, heating collar is wrapped in outside the machine barrel, with the plasticizing injecting device basically identical of common injection machine; Injection cylinder is made up of cylinder barrel, injection ram, injecting piston rod, pressure sensor and speedup spring, and the screw rod tail end is connected with hydraulic motor, and hydraulic motor links to each other with injection ram by servicing unit; The speedup spring is positioned at the injection cylinder oil pocket, and near terminal, one end and injection ram end face are fixed, and close injection cylinder end is free end or is connected with spring regulating device.The speedup spring of this programme can reach the performance requirement of ultrahigh speed injection, and the performance of its each side is all passed through demonstration.The plasticizing injecting device of this programme adopts rearmounted control formula spring energy-storage device, utilizes the energy storage equipment accumulation of energy, releases energy the injection speed of lift-bolt when injection, thereby reaches the specification requirement of ultrahigh speed injection.
The rearmounted energy-storage type ultrahigh speed of the present invention plasticizing injecting device, its rearmounted control formula spring energy-storage device has advantages such as energy-conservation, simple in structure.Fluid pressure type ultrahigh speed injection machine and electrodynamic type ultrahigh speed injection machine all are by lead-screw endways forward, but it needs large-power hydraulic equipment or electrical equipment, have energy consumption big, safeguard unavoidable problem such as difficulty.And in fact the forward type energy storage equipment is exactly by the precompressed melt, with the form of compression melt as accumulation of energy, allows melt freely discharge when injection, realize the ultrahigh speed injection, but its front-end control required precision is very high, is difficult to control.Postposition control formula spring energy-storage device in this programme then is to equip spring in injection cylinder, replaces the hydraulic accumulating device of fluid pressure type ultrahigh speed injection machine, replaces the linear electric machine of electronic ultrahigh speed injection machine costliness.Rearmounted control formula spring energy-storage device is formed whole energy storage equipment by simple spring element and necessary jockey.This device can not only be finished accumulation of energy, and can also regulate as requested.Its by when plasticizing retreating of screw rod carry out accumulation of energy, and fluid,matching pressing system is finished the compress energy storage process of spring.After the preformed action was finished, by the energy release of spring, lead-screw was injected thereby reach ultrahigh speed forward.Can realize the adjusting of decrement by the position of regulating spring, thereby realize the control of accumulation of energy size.This energy storage equipment utilizes the compression and the release of spring, thereby reaches the performance requirement of accumulation of energy and screw rod speed-raising.This device has solved before this ultrahigh speed injection machine cost height well, has safeguarded shortcomings such as difficult, that energy consumption is big.
The rearmounted energy-storage type ultrahigh speed of the present invention plasticizing injecting device, its speedup spring is the compression spring, effective active length of speedup spring is greater than the injection stroke of injection machine, and the original state of speedup spring is in its pre-compressed state, guarantees that the speedup spring still can operate as normal when injection volume is very little.Compression spring of the present invention is a helical spring, and active length is the linear zone of spring, thereby spring can be carried out better controlled in injection machine.In addition, the load of spring and life-span must reach the requirement of ultrahigh speed injection machine.Because the speedup spring is the essential elements of energy storage equipment, thereby the drift of spring, the diameter of spring, the rigidity of spring, the material of spring all need to design and check.Speedup spring among the present invention can be changed and upgrade, because syndeton is simple, therefore changing can be too not complicated.The user can adopt the different speedup spring of performance, but prerequisite be to satisfy the requirement of ultrahigh speed injection machine according to different requirements, and spring has durability preferably.
The rearmounted energy-storage type ultrahigh speed of the present invention plasticizing injecting device, its transmission is different from common injection machine and ultrahigh speed injection machine.In running part of the present invention, hydraulic motor is moved forward to the injection cylinder front, hydraulic motor is by the direct drive screw of power transmission shaft, and both are on same axis.Hydraulic motor is fixed on the movable plate of penetrating platform, and hydraulic motor is along with the preceding of screw rod and then advance, retreating and retreat with screw rod.Injection ram joins by interlock plate and movable plate, thereby realizes the action of injection machine.In this programme, hydraulic motor to reach, is not only made the running part mechanism simplifying, importantly can realize regulating of spring, overcome the shortcoming of hydraulic motor postposition.
The rearmounted energy-storage type ultrahigh speed of the present invention plasticizing injecting device, its spring regulating device is positioned at the rear portion of injection cylinder, and the function of adjusting the spring active length is arranged.The regulative mode of spring regulating device can be manual adjustments.By the rotation of nut, utilize the threaded nut principle to change the active length of spring.This mode is the simplest the most original regulative mode.In addition, can adopt motor to cooperate the regulative mode of ball-screw.Utilize the driven by motor ball-screw to rotate, drive spring fastenings by ball-screw and realize axial displacement.The adjusting that realizes spring is crucial, and coming regulating spring according to the requirement of injection machine is a basic demand of ultrahigh speed injection machine.
Generally speaking, ultrahigh speed injecting plasticizing device of the present invention is compared with existing ultrahigh speed injection device, has characteristics such as simple in structure, energy-conservation, environmental protection.Problems such as the power consumption that can solve terminal control formula ultrahigh speed injection well is big, control accuracy is low, acceleration difficulty.In addition, problems such as the injection molding control difficulty of front-end control formula ultrahigh speed have also been solved.
Description of drawings
Fig. 1 is the schematic diagram of the rearmounted energy-storage type ultrahigh speed of the present invention plasticizing injecting device.
Fig. 2 is the enlarged diagram that the present invention puts being connected of energy-storage type ultrahigh speed plasticizing injecting device hydraulic motor and screw rod and transmission.
Fig. 3 is the enlarged drawing that the present invention puts energy-storage type ultrahigh speed plasticizing injecting device speedup spring section.
Among the figure: 1-nozzle, 2-front barrel, 3-screw head, 4-check ring, the 5-machine barrel, 6-screw rod, the reinforced seat of 7-, 8-baffle plate, the 9-end cap, 10-splined shaft, 11-movable plate, 12-hydraulic motor, the 13-plate that links, 14-injection ram, 15-injection seat, 16-injection cylinder protecgulum, the 17-spring, 18-spring shaft, 19-injection cylinder cylinder body, the 20-spring bearer plate, 21-injection cylinder bonnet, 22-regulating sleeve.
The specific embodiment
As shown in Figure 1, put energy-storage type ultrahigh speed plasticizing injecting device mainly by; Nozzle 1, machine barrel 5, screw rod 6, hydraulic motor 12, injection ram 14, injection seat 15, injection cylinder protecgulum 16, injection cylinder cylinder body 19, injection cylinder bonnet 21, spring 17, regulating sleeve 22 are formed.Wherein, machine barrel 5, injection seat 15, hydraulic motor 12, injection ram 14, spring are connected with regulating sleeve 22 axial alignment successively.Injection seat 15 can slide relatively, and reinforced cover 7 is placed on the injection seat 15, and screw rod 6 afterbodys are connected with splined shaft 10 by spline, and hydraulic motor 12 links to each other with screw rod 6 by splined shaft 10.Injection cylinder is placed on injection seat 15 rear portions, and spring 17 is contained in the injection cylinder, and spring 17 can freely compress in oil cylinder and discharge.
As shown in Figure 2, running part is mainly by hydraulic motor 12, and interlock plate 13 is formed.Screw rod 6 afterbodys are connected with splined shaft 10 by spline, and are by baffle plate 8 that screw rod 6 is fixing, avoid taking place axially to relatively move.Hydraulic motor 12 also is connected with splined shaft 10 by spline, by splined shaft 10 drive screws 6.Hydraulic motor 12 is fixed on the movable plate 11, and movable plate 11 can be realized moving axially, and realizes action of injection.
As shown in Figure 3, injection device mainly is made up of injection ram 14, injection cylinder protecgulum 16, spring 17, injection cylinder cylinder body 19, injection cylinder bonnet 21, regulating sleeve 22.Wherein, spring 17 is connected with injection ram 14, and spring shaft 18 is enclosed within the spring 17, and an end is fixed on the injection ram 14, and the other end freely moves axially in regulating sleeve 22.Spring 17 is the compression spring, and its active length satisfies the stroke of injection machine, and spring 17 is in compressive state all the time.The active length of spring 17 is adjustable, but the decrement by regulating sleeve 22 manual adjustments springs 17, thus can be according to the active length that requires regulating spring 17 of injection machine.Regulating sleeve 22 is connected with injection cylinder bonnet 21 by screw thread.
In the preformed stage of cycle period, screw rod 6 retreats while rotating, and in fallback procedures, provides back pressure by 17 pairs of material preformeds of compression spring; Because the melt back pressure that spring 17 provides in the process of being compressed increases gradually, can be by adjusting the pressure of hydraulic injection molding machine system, with spring 17 common the constant of material preformed back pressure of realizing at oil return opening.In pre-plastic process, compressed spring 17 stores a large amount of elastic potential energys.After the material preformed was finished, oil return opening will be kept certain pressure, to keep the elastic potential energy of spring 17.During injection, the oil-in oil-feed, oil return opening pressure is cancelled, and at this moment, the elastic potential energy abrupt release of spring 17 provides power and acceleration for injection ram 14 travels forward, and enters the injection moulding of die cavity realization ultrahigh speed at a high speed thereby make screw rod 6 promote melt.
Claims (3)
1. rearmounted energy-storage type ultrahigh speed plasticizing injecting device, mainly by nozzle, machine barrel, screw rod, heating collar, loading hopper, penetrate platform, the hopper seat, hydraulic motor, injection cylinder and spring regulating device are formed, nozzle, machine barrel, the hopper seat, hydraulic motor is connected with injection cylinder axial alignment successively, penetrating platform is placed on the frame, loading hopper is arranged on to be penetrated on the platform, screw rod is positioned at machine barrel, heating collar is wrapped in outside the machine barrel, plasticizing injecting device basically identical with common injection machine, it is characterized in that: injection cylinder is by cylinder barrel, injection ram, injecting piston rod, pressure sensor and speedup spring are formed, the screw rod tail end is connected with hydraulic motor, and hydraulic motor links to each other with injection ram by servicing unit; The speedup spring is positioned at the injection cylinder oil pocket, and near terminal, one end and injection ram end face are fixed, and close injection cylinder end is free end or is connected with spring regulating device.
2. rearmounted energy-storage type ultrahigh speed plasticizing injecting device according to claim 1 is characterized in that: the speedup spring is the compression spring, and effective active length of speedup spring is greater than the injection stroke of injection machine, and the original state of speedup spring is in its pre-compressed state.
3. rearmounted energy-storage type ultrahigh speed plasticizing injecting device according to claim 2, it is characterized in that: the regulative mode of spring regulating device is a manual adjustments, or adopts motor to cooperate the motorized adjustment mode of ball-screw.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010555883 CN102069574B (en) | 2010-11-22 | 2010-11-22 | Rear energy storage type super-high speed plasticizing injection device |
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| CN 201010555883 CN102069574B (en) | 2010-11-22 | 2010-11-22 | Rear energy storage type super-high speed plasticizing injection device |
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| CN102069574A true CN102069574A (en) | 2011-05-25 |
| CN102069574B CN102069574B (en) | 2013-06-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582043A (en) * | 2012-02-09 | 2012-07-18 | 北京化工大学 | Fully electric super speed injection molding machine |
| CN102909837A (en) * | 2012-11-13 | 2013-02-06 | 黄时来 | Injection device of plastic-injection moulding machine |
| CN107030998A (en) * | 2016-02-03 | 2017-08-11 | 宁波弘讯科技股份有限公司 | A kind of injection machine and its ejecting mechanism |
| CN113290796A (en) * | 2021-06-10 | 2021-08-24 | 北京化工大学 | Explosion type high-speed injection molding machine |
| WO2024060770A1 (en) * | 2022-09-23 | 2024-03-28 | 苏州锦珂塑胶科技有限公司 | Injection molding machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201506011U (en) * | 2009-10-12 | 2010-06-16 | 北京化工大学 | Ultrahigh speed injection molding machine |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201506011U (en) * | 2009-10-12 | 2010-06-16 | 北京化工大学 | Ultrahigh speed injection molding machine |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582043A (en) * | 2012-02-09 | 2012-07-18 | 北京化工大学 | Fully electric super speed injection molding machine |
| CN102909837A (en) * | 2012-11-13 | 2013-02-06 | 黄时来 | Injection device of plastic-injection moulding machine |
| CN102909837B (en) * | 2012-11-13 | 2015-03-18 | 黄时来 | Injection device of plastic-injection moulding machine |
| CN107030998A (en) * | 2016-02-03 | 2017-08-11 | 宁波弘讯科技股份有限公司 | A kind of injection machine and its ejecting mechanism |
| CN113290796A (en) * | 2021-06-10 | 2021-08-24 | 北京化工大学 | Explosion type high-speed injection molding machine |
| CN113290796B (en) * | 2021-06-10 | 2024-05-28 | 北京化工大学 | Deflagration type high-speed injection molding machine |
| WO2024060770A1 (en) * | 2022-09-23 | 2024-03-28 | 苏州锦珂塑胶科技有限公司 | Injection molding machine |
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