CN1947986A - Dynamic injecting system of injection moulder, and its vibration injecting method - Google Patents
Dynamic injecting system of injection moulder, and its vibration injecting method Download PDFInfo
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- CN1947986A CN1947986A CN 200610122996 CN200610122996A CN1947986A CN 1947986 A CN1947986 A CN 1947986A CN 200610122996 CN200610122996 CN 200610122996 CN 200610122996 A CN200610122996 A CN 200610122996A CN 1947986 A CN1947986 A CN 1947986A
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Abstract
A dynamic injection-out system for injection moulding machine is composed of an injecting barrel, a screw bolt inserted in said injecting barrel, and a crank vibration type injection driver consisting of several crank drive modules arranged at phase intervals and connected to a synchronous driver. Its vibration injecting method includes such steps as respectively injecting the molten material by said vibration injecting modules, mixing, and injecting again.
Description
Technical field
The present invention relates to the polymer dynamic injection technology, particularly a kind of injection machine dynamically penetrates system and vibration injection method thereof.
Background technology
In existing injection machine, in order to realize the linear reciprocating motion of injecting screw, generally adopt following four class ejecting mechanism structures: (1) uses oil cylinder directly to drive the reciprocating (see figure 1) of screw rod; This scheme cost is lower, at home and abroad uses in decades always; But this technology adopts the medium of hydraulic oil as transmission, causes energy consumption bigger, and oil pressure pollutes, and reaction speed is slow.(2) use ball screw to drive screw rod, utilize the driven by motor feed screw nut to realize the reciprocating motion (the similar Fig. 2 of structure) of rolled thread bar; This scheme is fast with respect to the 1st kind of its reaction speed of scheme, controls fairly simplely, and precision increases, and than environmental protection; But because screw mandrel cost height, thereby maintenance cost is also higher, and single screw mandrel can't realize that high thrust drives, realize bigger thrust if desired, must use a plurality of screw mandrel synchronization actions of a plurality of driven by motor, realize that the synchronization action of many motors multifibres bar not only controls complexity, and cost is higher, therefore can't popularizes use in industry in an all-round way.(3) use linear electric motors, it is reciprocating directly to drive screw rod; This scenario-frame is simple, and reaction is fast; But its cost is higher, and can't realize high thrust motion (see figure 3).(4) use single crank mechanism to drive the reciprocating (see figure 4) of screw rod, utilize the swing of crank, realize the reciprocating motion of screw rod at certain angle (less than 180 °).This scheme avoids using screw mandrel, and maintenance cost is low; But its single crank mechanism volume comparatively huge (otherwise difficulty provides enough injection forces), the nonlinear Control complex structure, cost height and stroke are very limited.
In addition, modern study shows: introduce dither effect in injection process, can make the energy-saving effect of physical properties of articles and forming process that fairly obvious raising is all arranged; But the realization of vibrating in the vibration moulding technology that present stage proposes is all by adding vibration generating apparatus, vibration is superimposed on the screw rod or in the flow process of melt introduces extraneous vibration.This mode has increased the input of equipment when introducing dither effect, itself has consumed energy.
Summary of the invention
The shortcoming that the objective of the invention is to overcome prior art provides a kind of rational in infrastructure with not enough, and its issuing velocity and pressure can be realized regular vibration, and the injection machine that obviously improves physical properties of articles and forming process energy-saving effect dynamically penetrates system.
Another object of the present invention is to provide a kind of vibration injection method that utilizes dynamically ejaculation system of above-mentioned injection machine to realize.
Purpose of the present invention is achieved through the following technical solutions: a kind of injection machine dynamically penetrates system, comprise injection cylinder, screw rod, ejaculation driving mechanism, described screw rod stretches in the injection cylinder, it is characterized in that: described ejaculation driving mechanism is the crank vibrates ejecting mechanism, is connected with the ejecting end of injection cylinder.
Described crank vibrates ejecting mechanism comprises several crank driven units, the alternate phase bit setting of described several crank driven units, and be connected with the driven in synchronism part, drive the alternate certain phase loop motion of each crank driven unit simultaneously by the driven in synchronism part.
Described driven in synchronism part can be the driving shaft of same motor or hydraulic motor.
Described crank driven unit comprises injection plunger tube, plunger, crank assemblies, described plunger stretches in the injection plunger tube, plunger is positioned at the outer end of injection plunger tube and is connected with crank assemblies, described crank assemblies is formed by two sections that are hinged, wherein one section end and described plunger are hinged, and the end of another section is connected with described driven in synchronism part.
The outlet of the injection plunger tube of described several crank driven units directly links together, and is connected with total exit wound of bullet again; Or link together by output channel, be connected with total exit wound of bullet again; The material that each injection plunger tube is penetrated pools together, and penetrates by total exit wound of bullet then.
Described several are a plurality of more than 3 or 3; Preferred 3.
A kind of vibration injection method that utilizes dynamically ejaculation system of above-mentioned injection machine to realize, it is characterized in that: after penetrating the material melt respectively by the crank vibrates ejecting mechanism of an alternate phase bit, the material melt mixed is penetrated together again, directly dither effect is introduced in the material melt.
A described alternate phase bit is meant circumference rotational segment one phase bit between circumferential homogeneous phase of the crank assemblies of crank vibrates ejecting mechanism.
A described phase bit can be the angles of dividing equally circumference such as 120 °, 90 °, 72 °, 60 °.
The mode of described material melt mixed can directly be mixed for penetrating the back by the crank vibrates ejecting mechanism; Or be delivered to total exit wound of bullet by output channel and mix again.
Action principle of the present invention is: the technology of the present invention is evenly to be rotated continuously by screw rod earlier to produce fused materials, dynamically penetrates in the die cavity that system directly is injected into mould via this injection machine again; This dynamically ejaculation system need not additionally to increase vibration generating arrangement and introduce dither effect at injection process---because the material that each plunger barrel penetrates is exported discontinuously with some cycles, if according to 3 of certain phase combination or more plunger barrel, so just can realize the continuous ejaculation of material, its speed and pressure that penetrates the material melt presents the clear regularity vibrating effect, the physical property that goods affix vibration is penetrated, can significantly improve hot strength, reduce internal stress; Simultaneously can reduce injection pressure, thereby improve the energy-saving effect of forming process.
The present invention has following advantage and effect with respect to prior art: (1) is simple and reasonable for structure, and cost is low; System of the present invention mainly is made up of several crank driven units and driven in synchronism part, because the quantity of crank driven unit is a plurality of, so adopt more small-sized crank driven unit also can realize required bigger injection force, bulky, the control structure complicated problems of having avoided existing single crank mechanism to exist; Simultaneously structure of the present invention there is no specific (special) requirements to motor, can adopt common electric machine directly to drive, and need not screw mandrel, so it is easy to manufacture, production cost is lower, and easily large-scale promotion is used.(2) control is convenient; The present invention does not use screw mandrel, only needs each set of bell cranks assembly of motor-driven to realize that simultaneously iterative motion gets final product, and need not to use complicated nonlinear Control structure, so control fairly simple, convenience, helps production application.(3) productive potentialities are bigger; System of the present invention adopts building block system to be used in combination mode, and its injection volume is unrestricted, has bigger productive potentialities, thereby can satisfy the range of application requirement of broad.(4) the present invention need not additionally to increase vibration generating arrangement and introduces dither effect at injection process, and its issuing velocity and pressure can be realized regular the vibration, make the energy-saving effect of physical properties of articles and forming process that fairly obvious raising all be arranged; Owing to avoid increasing the input of vibratory equipment, so equipment cost is lower, and energy consumption is less relatively simultaneously, and economic benefit is apparent in view.
Description of drawings
Fig. 1 is to use the structural representation of the ejecting mechanism of hydraulic oil cylinder driving.
Fig. 2 is to use ball screw to drive the structural representation of the ejecting mechanism of screw rod.
Fig. 3 is to use linear electric motors to drive the structural representation of the ejecting mechanism of screw rod.
Fig. 4 is to use the structural representation of the ejecting mechanism of single crank mechanism.
Fig. 5 is the structural representation that injection machine of the present invention dynamically penetrates system.
Fig. 6 is the cutaway view that injection machine shown in Figure 5 dynamically penetrates system.
Fig. 7 is the structural representation that injection machine shown in Figure 5 dynamically penetrates the crank vibrates ejecting mechanism of system.
Fig. 8 is the cutaway view of crank vibrates ejecting mechanism shown in Figure 7.
Fig. 9 is the action principle schematic diagram of crank vibrates ejecting mechanism shown in Figure 7.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Embodiment
Concrete structure of the present invention such as Fig. 5～shown in Figure 9, by Fig. 5 and Fig. 6 as seen, dynamically ejaculation system of this injection machine comprises injection cylinder 1, screw rod 2, penetrates driving mechanism, described screw rod 2 stretches in the injection cylinder 1, described ejaculation driving mechanism is the crank vibrates ejecting mechanism, is connected with the ejecting end of injection cylinder; Described crank vibrates ejecting mechanism such as Fig. 7～shown in Figure 9, comprise three crank driven units, the alternate 120 ° of phase places of described three crank driven units are provided with (see figure 9), and be connected with the driven in synchronism part, drive the alternate 120 ° of phase loop motion of each crank driven unit simultaneously by the driven in synchronism part, described driven in synchronism part can be the driving shaft 3 of same motor, described crank driven unit as shown in Figure 7 and Figure 8, comprise injection plunger tube 4, plunger 5, crank assemblies 6, described plunger 5 stretches in the injection plunger tube 4, plunger 5 is positioned at injection plunger tube 5 outer ends and is connected with crank assemblies 6, described crank assemblies 6 is formed by two sections that are hinged, wherein one section end and described plunger 5 are hinged, and the end of another section is connected with the driving shaft of same motor 3.The outlet of the injection plunger tube 5 of described three crank driven units links together by output channel, is connected with total exit wound of bullet again; The material that each injection plunger tube is penetrated pools together, and penetrates by total exit wound of bullet then.
The vibration injection method that utilizes dynamically ejaculation system of above-mentioned injection machine to realize is: after penetrating the material melt respectively by the crank vibrates ejecting mechanism of alternate 120 ° of phase places, the material melt is delivered to total exit wound of bullet by output channel mixes ejaculation, directly dither effect is introduced in the material melt.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (9)
1, a kind of injection machine dynamically penetrates system, comprises injection cylinder, screw rod, ejaculation driving mechanism, and described screw rod stretches in the injection cylinder, it is characterized in that: described ejaculation driving mechanism is the crank vibrates ejecting mechanism, is connected with the ejecting end of injection cylinder.
2, injection machine according to claim 1 dynamically penetrates system, it is characterized in that: described crank vibrates ejecting mechanism comprises several crank driven units, the alternate phase bit setting of described several crank driven units, and be connected with the driven in synchronism part.
3, injection machine according to claim 2 dynamically penetrates system, it is characterized in that: described driven in synchronism part is the driving shaft of same motor.
4, injection machine according to claim 2 dynamically penetrates system, it is characterized in that: described crank driven unit comprises injection plunger tube, plunger, crank assemblies, described plunger stretches in the injection plunger tube, plunger is positioned at the outer end of injection plunger tube and is connected with crank assemblies, described crank assemblies is formed by two sections that are hinged, wherein one section end and described plunger are hinged, and the end of another section is connected with described driven in synchronism part.
5, injection machine according to claim 2 dynamically penetrates system, it is characterized in that: the outlet of the injection plunger tube of described several crank driven units directly links together, and is connected with total exit wound of bullet again; Or link together by output channel, be connected with total exit wound of bullet again.
6, injection machine according to claim 2 dynamically penetrates system, it is characterized in that: described several are a plurality of more than 3 or 3.
7, a kind of vibration injection method that utilizes each dynamically ejaculation system of described injection machine of claim 1～6 to realize, it is characterized in that: after penetrating the material melt respectively by the crank vibrates ejecting mechanism of an alternate phase bit, the material melt mixed is penetrated together again, directly dither effect is introduced in the material melt.
8, vibration injection method according to claim 7 is characterized in that: a described alternate phase bit is meant crank assemblies one phase bit between circumferential homogeneous phase of crank vibrates ejecting mechanism.
9, vibration injection method according to claim 7 is characterized in that: a described phase bit is the angle of dividing equally circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101229969A CN100544933C (en) | 2006-10-25 | 2006-10-25 | Injection machine dynamically penetrates system and vibration injection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101229969A CN100544933C (en) | 2006-10-25 | 2006-10-25 | Injection machine dynamically penetrates system and vibration injection method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1947986A true CN1947986A (en) | 2007-04-18 |
| CN100544933C CN100544933C (en) | 2009-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101229969A Active CN100544933C (en) | 2006-10-25 | 2006-10-25 | Injection machine dynamically penetrates system and vibration injection method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905516A (en) * | 2010-08-05 | 2010-12-08 | 华南理工大学 | Crank block injection device of electric injection molding machine and control method thereof |
| CN115195058A (en) * | 2022-07-22 | 2022-10-18 | 广东轻工职业技术学院 | High-speed crankshaft vibration injection molding device |
-
2006
- 2006-10-25 CN CNB2006101229969A patent/CN100544933C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905516A (en) * | 2010-08-05 | 2010-12-08 | 华南理工大学 | Crank block injection device of electric injection molding machine and control method thereof |
| CN101905516B (en) * | 2010-08-05 | 2013-07-24 | 华南理工大学 | Crank block injection device of electric injection molding machine and control method thereof |
| CN115195058A (en) * | 2022-07-22 | 2022-10-18 | 广东轻工职业技术学院 | High-speed crankshaft vibration injection molding device |
| CN115195058B (en) * | 2022-07-22 | 2023-10-20 | 广东轻工职业技术学院 | High-speed crankshaft vibration injection molding device |
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| Publication number | Publication date |
|---|---|
| CN100544933C (en) | 2009-09-30 |
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