CN204109329U - Slidingtype self adaptation plasticizing extrusion device - Google Patents
Slidingtype self adaptation plasticizing extrusion device Download PDFInfo
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- CN204109329U CN204109329U CN201420201101.0U CN201420201101U CN204109329U CN 204109329 U CN204109329 U CN 204109329U CN 201420201101 U CN201420201101 U CN 201420201101U CN 204109329 U CN204109329 U CN 204109329U
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Abstract
The utility model discloses a kind of slidingtype self adaptation plasticizing extrusion device, and screw mechanism comprises the coaxial positive feed screw rod arranged and metering extrusion screw rod, is connected between positive feed screw rod and metering extrusion screw rod by eccentric rotary assembly; Eccentric rotary assembly comprises the coaxial multiple eccentric rotary dishes arranged, and is connected with a joggle between adjacent two eccentric rotary dishes by chute; Its method is that material is carried by positive feed screw rod at solid conveying section, carries out fusion plastification mixing in melting mixing section by eccentric rotary assembly, finally in metering extruding zone by the extrusion molding of metering extrusion screw rod.The utility model arranges eccentric rotary mechanism, melting efficiency is accelerated by the first compression of eccentric rotary dish each in eccentric rotary mechanism and second-compressed process alternating action, can require to realize self-adapted high-efficient melting for different material kind and different processing output, improve melting efficiency and the combination of strengthening mixed milling process simultaneously, enhance mixing and diabatic process.
Description
Technical field
The utility model relates to high polymer material plasticizing and extrudes processing technique field, particularly a kind of slidingtype self adaptation plasticizing extrusion device.
Background technology
Single screw extrusion machine is widely used in field of high polymer material processing, the feature such as have that structure is simple, attended operation is convenient, can set up stable extrusion pressure, but has that plasticizing efficiency is low, the defect of mixed milling weak effect.Processing is extruded in the plasticizing utilizing single screw extrusion machine to carry out macromolecular material, and melting process and mixing process generally separately carry out separately by traditional method, thus improves fusion plastification efficiency.
For improving fusion plastification efficiency further, also the new structures such as separating screw rod have been there is at present, Solid Bed is striven to be separated with molten bath, accelerate melting process, but wherein the secondary height of spiral shell rib and the determination of helical angle are strongly depend on processing materials performance, often occur that Solid Bed compression speed is too fast, cause flow blockage and cannot the phenomenon of charging, or occur compression is too slow, screw-rod structure cannot adapt to processing materials kind and change of production requirement and cannot realize accelerating the phenomenon of melting object.
For strengthening mixed milling, there is the various structures such as screw pin, pineapple block mixing section, barrier screw, but the level of its mixed has not still reached two in the same way screw rod, complicated hybrid task cannot be born.The research of chaotic dynamics shows, flows and can trigger chaotic mixing in eccentric shaft and bearing clearance, and interval mixed effect is better, as can be seen here, develops a kind of screw rod with eccentric shaft plastifying fusion section, is more conducive to strengthening mixed milling.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and plastifies the slidingtype self adaptation plasticizing extrusion device that mixed effect is better, plastifying fusion efficiency is higher.
The technical solution of the utility model is: a kind of slidingtype self adaptation plasticizing extrusion device, comprise barrel and be located at the screw mechanism in barrel, screw mechanism comprises the coaxial positive feed screw rod arranged and metering extrusion screw rod, is connected between positive feed screw rod and metering extrusion screw rod by eccentric rotary assembly; Eccentric rotary assembly comprises the coaxial multiple eccentric rotary dishes arranged, and is connected with a joggle between adjacent two eccentric rotary dishes by chute; Barrel comprises the solid conveying section, melting mixing section and the metering extruding zone that connect successively, and positive feed screw rod is positioned at the solid conveying section of barrel, and eccentric rotary assembly is positioned at the melting mixing section of barrel, and metering extrusion screw rod is positioned at the metering extruding zone of barrel.Wherein, the screw rod that positive feed screw rod can adopt cross sectional shape different with metering extrusion screw rod, and the threaded outer profile line of positive feed screw rod and metering extrusion screw rod is all tangent with the inwall of barrel, the inner chamber of barrel is made up of the cylinder groove that is communicated with.
In described eccentric rotary assembly, each eccentric rotary dish is oval; In two adjacent eccentric rotary dishes, the both sides of an eccentric rotary dish are respectively equipped with dovetail groove, and the both sides of another eccentric rotary dish are respectively equipped with the projection of swallow-tail form, and each projection and corresponding dovetail groove form chute.
In described eccentric rotary assembly, when eccentric rotary assembly is in original state, the center of each eccentric rotary dish on the same axis (due to the effect of material in process, the center of each eccentric rotary dish will no longer overlap); The axis of positive feed screw rod, the metering axis of extrusion screw rod and the dead in line of barrel; Barrel horizontal positioned, the axis at each eccentric rotary disk center place is higher than the axis of barrel;
On positive feed screw rod, the end face be connected with eccentric rotary assembly is provided with dovetail groove;
On metering extrusion screw rod, the end face be connected with eccentric rotary assembly is provided with dovetail groove.
As a kind of preferred version, described eccentric rotary assembly comprises 5 oval eccentric rotary dishes, and each eccentric rotary dish is the arrangement of 45 °, stagger arrangement angle; On same eccentric rotary dish, the angle between the axis of two dovetail grooves is 90 °; On same eccentric rotary dish, the angle between the axis of two projections is 90 °.
As another kind of preferred version, described eccentric rotary assembly comprises 7 oval eccentric rotary dishes, and each eccentric rotary dish is the arrangement of 30 °, stagger arrangement angle; On same eccentric rotary dish, the angle between the axis of two dovetail grooves is 90 °; On same eccentric rotary dish, the angle between the axis of two projections is 90 °.
In described eccentric rotary assembly, each eccentric rotary dish also can be the combined shaped of four arcs; When eccentric rotary assembly is in original state, the center of each eccentric rotary dish is on the same axis (due to the effect of material in process, the center of each eccentric rotary dish will no longer overlap), barrel horizontal positioned, the axis at each eccentric rotary disk center place is higher than the axis of barrel.
When above-mentioned slidingtype self adaptation plasticizing extrusion device uses, its principle is: positive feed screw rod rotates around barrel axis, drive each eccentric rotary dish to slide successively to rotate, eccentric rotary dish drives further and measures extrusion screw rod and rotate around barrel axis.After material enters barrel from charging aperture, move to discharging opening direction under the forced conveyance effect of positive feed screw rod, material is through melting mixing section, the first compression space (space namely on the downside of eccentric rotary dish and between material tube inner wall) that each eccentric rotary dish is formed, pressing materials accelerates melting, when eccentric rotary dish compaction rate exceedes melting speed, will along slide under the effect of eccentric rotary dish material in first compression space, first compression spatial volume expands, and form second-compressed space (space namely on the upside of eccentric rotary dish and between material tube inner wall) at the dorsal part of a compaction space, material in extruding quadratic space accelerates melting, at barrel external heat, eccentric slip rotating disk slide the frictional heat that produces and work done during compression acting in conjunction under, material is subject to compression that first compression and second-compressed replace and accelerates melting, form self adaptation melting process, material completes melting process through several eccentric rotary dish effects successively, melt is transformed into from solid material, meanwhile, solid-liquid two-phase mixture and melt, experienced by the stretching field of force and chaotic dynamics effect reciprocation when eccentric rotary dish combines, strengthen mixed milling effectively, and the process accelerating melting completes mixed process simultaneously.Finally, melt enters metering extruding zone, and complete plasticizing and mixing further, formation steady extruding pressure, extrudes from discharging opening.
By said apparatus, a kind of slidingtype self adaptation plasticating and extruding method can be realized, comprise the following steps:
(1) after material enters barrel, be introduced into solid conveying section, travel forward under the promotion of positive feed screw rod;
(2) after material movement to melting mixing section, eccentric rotary assembly rotates, and pressing materials accelerates melting;
On the downside of each eccentric rotary dish and form first compression space between material tube inner wall, on the upside of each eccentric rotary dish and form second-compressed space between material tube inner wall; In first compression space, when the compaction rate of eccentric rotary dish exceedes melting speed, along slide under the effect of eccentric rotary dish material in first compression space, the volume enlargement in first compression space, the material in eccentric rotary dish extruding second-compressed space; Material accelerates melting under the first compression space of each eccentric rotary dish and the alternate compression effect in second-compressed space, forms self adaptation melting process, thus converts melt to;
(3), after melt enters metering extruding zone, metering extrusion screw rod rotates, by melt extrusion.
The slidingtype self adaptation plasticizing extrusion device of the another kind of structure of the utility model, comprise barrel and be located at the screw mechanism in barrel, described screw mechanism comprises coaxial the positive feed screw rod, vented screw and the metering extrusion screw rod that arrange, connected by the first eccentric rotary assembly between positive feed screw rod and vented screw, connected by the second eccentric rotary assembly between vented screw and metering extrusion screw rod; First eccentric rotary assembly and the second eccentric rotary assembly are coaxially arranged, and comprise multiple eccentric rotary dish respectively, are connected with a joggle between adjacent two eccentric rotary dishes by chute; Barrel comprises the solid conveying section, melting mixing section, exhaust section, secondary mixing section and the metering extruding zone that connect successively, positive feed screw rod is positioned at the solid conveying section of barrel, first eccentric rotary assembly is positioned at the melting mixing section of barrel, vented screw is positioned at the exhaust section of barrel, second eccentric rotary assembly is positioned at the secondary mixing section of barrel, and metering extrusion screw rod is positioned at the metering extruding zone of barrel.Wherein, the screw rod that positive feed screw rod, vented screw and metering extrusion screw rod can adopt cross sectional shape different, and the threaded outer profile line of positive feed screw rod, vented screw and metering extrusion screw rod is all tangent with the inwall of barrel, the inner chamber of barrel is made up of the cylinder groove that is communicated with.
In described first eccentric rotary assembly and the second eccentric rotary assembly, each eccentric rotary dish is combined shaped that is oval or four arcs; In two the eccentric rotary dishes connected, the both sides of an eccentric rotary dish are respectively equipped with dovetail groove, and the both sides of another eccentric rotary dish are respectively equipped with the projection of swallow-tail form, and each projection and corresponding dovetail groove form chute;
First eccentric rotary assembly comprises 5 oval eccentric rotary dishes, and each eccentric rotary dish is the arrangement of 45 °, stagger arrangement angle;
Second eccentric rotary assembly comprises 3 oval eccentric rotary dishes, and each eccentric rotary dish is the arrangement of 45 °, stagger arrangement angle.
By said apparatus, a kind of slidingtype self adaptation plasticating and extruding method can be realized, comprise the following steps:
(1) after material enters barrel, be introduced into solid conveying section, travel forward under the promotion of positive feed screw rod;
(2) after material movement to melting mixing section, the first eccentric rotary assembly rotates, and pressing materials accelerates melting;
On the downside of each eccentric rotary dish and form first compression space between material tube inner wall, on the upside of each eccentric rotary dish and form second-compressed space between material tube inner wall; In first compression space, when the compaction rate of eccentric rotary dish exceedes melting speed, along slide under the effect of eccentric rotary dish material in first compression space, the volume enlargement in first compression space, the material in eccentric rotary dish extruding second-compressed space; Material accelerates melting under the first compression space of each eccentric rotary dish and the alternate compression effect in second-compressed space, forms self adaptation melting process, thus converts melt to;
(3), after melt enters exhaust section, travel forward under the promotion of vented screw, to discharge in melt simultaneously with gas;
(4) after melt enters secondary mixing section, the second eccentric rotary assembly rotates, and extruding melt travels forward one-step melting melting of going forward side by side;
(5), after melt enters metering extruding zone, metering extrusion screw rod rotates, by melt extrusion.
The utility model, relative to prior art, has following beneficial effect:
1, the utility model by arranging eccentric rotary mechanism between positive feed screw rod and metering extrusion screw rod, melting efficiency is accelerated by the first compression of eccentric rotary dish each in eccentric rotary mechanism and second-compressed process alternating action, can require to realize self-adapted high-efficient melting, processing materials wide adaptability for different material kind and different processing output.
2, the utility model will improve melting efficiency and the combination of strengthening mixed milling process, first compression space and second-compressed space can produce effective tensile force field action effect, the self-adapting random motion of each eccentric rotary dish produces random perturbation to Flow of Goods and Materials, the eccentric shaft bearing gap flow field that forms between eccentric rotary dish and machine barrel all effectively can bring out chaotic mixing, enhance mixing and diabatic process, made the heat of plasticizing, mechanical course shortens greatly, energy consumption is low, energy conservation and consumption reduction effects is remarkable.
3, the utility model can increase substantially melting and the mixed milling ability of single screw extrusion machine, there is extremely excellent dispersion distributed rendering effect, the feature that single screw extrusion machine structure is simple, extrusion characteristics is excellent can be retained again, be particularly useful for the direct compounding processing and forming of the materials such as high yield, high filling and nano composite material.
Accompanying drawing explanation
Fig. 1 is the structural representation of this slidingtype self adaptation plasticizing extrusion device embodiment 1.
Fig. 2 is that the A-A of Fig. 1 is to schematic cross-section.
Fig. 3 is that the B-B of Fig. 1 is to schematic cross-section.
Fig. 4 is the structural representation of C-C direction upper hopper chute in Fig. 1.
Fig. 5 is that the D-D of Fig. 1 is to schematic cross-section.
Fig. 6 is the first compression space schematic diagram that single eccentric rotary dish is formed.
Fig. 7 is the second-compressed space schematic diagram that single eccentric rotary dish is formed.
Fig. 8 is the structural representation of eccentric rotary mechanism in embodiment 3.
Fig. 9 is the structural representation of single eccentric rotary dish in embodiment 5.
Figure 10 is the another kind of structural representation of C-C direction upper hopper chute in Fig. 1.
Figure 11 is the structural representation of this slidingtype self adaptation plasticizing extrusion device embodiment 7.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1
A kind of slidingtype self adaptation plasticizing of the present embodiment extrusion device, as shown in Figure 1, the screw mechanism comprising barrel 1 and be located in barrel, screw mechanism comprises the coaxial positive feed screw rod 2 arranged and metering extrusion screw rod 3, is connected between positive feed screw rod and metering extrusion screw rod by eccentric rotary assembly; Eccentric rotary assembly comprises the coaxial multiple eccentric rotary dishes 4 arranged, and is connected with a joggle between adjacent two eccentric rotary dishes by chute; Barrel comprises the solid conveying section 5, melting mixing section 6 and the metering extruding zone 7 that connect successively, positive feed screw rod is positioned at the solid conveying section of barrel, eccentric rotary assembly is positioned at the melting mixing section of barrel, and metering extrusion screw rod is positioned at the metering extruding zone of barrel.Wherein, the screw rod that positive feed screw rod can adopt cross sectional shape different with metering extrusion screw rod, and the threaded outer profile line of positive feed screw rod and metering extrusion screw rod is all tangent with the inwall of barrel, the inner chamber of barrel is made up of the cylinder groove that is communicated with.
As shown in Figure 2 or Figure 3, in eccentric rotary assembly, each eccentric rotary dish is oval; As shown in Figure 4, in two adjacent eccentric rotary dishes, the both sides of an eccentric rotary dish are respectively equipped with dovetail groove, and the both sides of another eccentric rotary dish are respectively equipped with the projection of swallow-tail form, and each projection and corresponding dovetail groove form chute 4-1.
In eccentric rotary assembly, when eccentric rotary assembly is in original state, the center of each eccentric rotary dish on the same axis (due to the effect of material in process, the center of each eccentric rotary dish will no longer overlap); The axis of positive feed screw rod, the metering axis of extrusion screw rod and the dead in line of barrel; Barrel horizontal positioned, the axis at each eccentric rotary disk center place is higher than the axis of barrel; As shown in Fig. 2, Fig. 3 or Fig. 5, wherein, O is the axis of barrel, and P is the center of eccentric rotary dish, and x, y direction distance of P and O is for being f, the width of chute 4-1 is N, the degree of depth is K, and the minor axis length of eccentric rotary dish is M, N<M, the distance of chute center line and barrel axes O is e, wherein f<e;
On positive feed screw rod, the end face be connected with eccentric rotary assembly is provided with dovetail groove;
On metering extrusion screw rod, the end face be connected with eccentric rotary assembly is provided with dovetail groove.
As shown in Figure 1, eccentric rotary assembly comprises 5 oval eccentric rotary dishes, and each eccentric rotary dish is the arrangement of 45 °, stagger arrangement angle; On same eccentric rotary dish, the angle between the axis of two dovetail grooves is 90 °; On same eccentric rotary dish, the angle between the axis of two projections is 90 °.In material conveying process, the mode that eccentric rotary assembly adopts 45 °, stagger arrangement angle forward (namely the rotation direction of each eccentric rotary dish is identical with the screw thread rotation direction of measuring on extrusion screw rod with positive feed screw rod) to carry carries out mass transport.
When above-mentioned slidingtype self adaptation plasticizing extrusion device uses, its principle is: positive feed screw rod rotates around barrel axis, drive each eccentric rotary dish to slide successively to rotate, eccentric rotary dish drives further and measures extrusion screw rod and rotate around barrel axis.After material enters barrel from charging aperture, move to discharging opening direction under the forced conveyance effect of positive feed screw rod, material is through melting mixing section, as shown in Figure 6, the first compression space 8 (space namely on the downside of eccentric rotary dish and between material tube inner wall) that each eccentric rotary dish is formed, pressing materials accelerates melting, when eccentric rotary dish compaction rate exceedes melting speed, will along slide under the effect of eccentric rotary dish material in first compression space, first compression spatial volume expands, and form second-compressed space 9 at the dorsal part of a compaction space, as shown in Figure 7 (space namely on the upside of eccentric rotary dish and between material tube inner wall), material in extruding quadratic space accelerates melting, at barrel external heat, eccentric slip rotating disk slide the frictional heat that produces and work done during compression acting in conjunction under, material is subject to compression that first compression and second-compressed replace and accelerates melting, form self adaptation melting process, material completes melting process through several eccentric rotary dish effects successively, melt is transformed into from solid material, meanwhile, solid-liquid two-phase mixture and melt, experienced by the stretching field of force and chaotic dynamics effect reciprocation when eccentric rotary dish combines, strengthen mixed milling effectively, and the process accelerating melting completes mixed process simultaneously.Finally, melt enters metering extruding zone, and complete plasticizing and mixing further, formation steady extruding pressure, extrudes from discharging opening.
By said apparatus, a kind of slidingtype self adaptation plasticating and extruding method can be realized, comprise the following steps:
(1) after material enters barrel, be introduced into solid conveying section, travel forward under the promotion of positive feed screw rod;
(2) after material movement to melting mixing section, eccentric rotary assembly rotates, and pressing materials accelerates melting;
On the downside of each eccentric rotary dish and form first compression space between material tube inner wall, on the upside of each eccentric rotary dish and form second-compressed space between material tube inner wall; In first compression space, when the compaction rate of eccentric rotary dish exceedes melting speed, along slide under the effect of eccentric rotary dish material in first compression space, the volume enlargement in first compression space, the material in eccentric rotary dish extruding second-compressed space; Material accelerates melting under the first compression space of each eccentric rotary dish and the alternate compression effect in second-compressed space, forms self adaptation melting process, thus converts melt to;
(3), after melt enters metering extruding zone, metering extrusion screw rod rotates, by melt extrusion.
Embodiment 2
A kind of slidingtype self adaptation plasticizing of the present embodiment extrusion device, compared with embodiment 1, its difference is, eccentric rotary assembly adopts 45 °, the stagger arrangement angle mode that oppositely (namely the rotation direction of each eccentric rotary dish is contrary with the screw thread rotation direction of measuring on extrusion screw rod with positive feed screw rod) carries to carry out mass transport.
Embodiment 3
A kind of slidingtype self adaptation plasticizing of the present embodiment extrusion device, compared with embodiment 1, its difference is, as shown in Figure 8, eccentric rotary assembly comprises 7 oval eccentric rotary dishes, and each eccentric rotary dish is the arrangement of 30 °, stagger arrangement angle; On same eccentric rotary dish, the angle between the axis of two dovetail grooves is 30 °; On same eccentric rotary dish, the angle between the axis of two projections is 30 °.In material conveying process, the mode that eccentric rotary assembly adopts 30 °, stagger arrangement angle forward (namely the rotation direction of each eccentric rotary dish is identical with the screw thread rotation direction of measuring on extrusion screw rod with positive feed screw rod) to carry carries out mass transport.
Embodiment 4
A kind of slidingtype self adaptation plasticizing of the present embodiment extrusion device, compared with embodiment 3, its difference is, eccentric rotary assembly adopts 30 °, the stagger arrangement angle mode that oppositely (namely the rotation direction of each eccentric rotary dish is contrary with the screw thread rotation direction of measuring on extrusion screw rod with positive feed screw rod) carries to carry out mass transport.
Embodiment 5
A kind of slidingtype self adaptation plasticizing of the present embodiment extrusion device, compared with embodiment 1, its difference is, as shown in Figure 9, in eccentric rotary assembly, each eccentric rotary dish also can be the combined shaped of four arcs (camber line QS, SXT, TU and UVQ namely shown in figure); When eccentric rotary assembly is in original state, the center of each eccentric rotary dish is on the same axis (due to the effect of material in process, the center of each eccentric rotary dish will no longer overlap), barrel horizontal positioned, the axis at each eccentric rotary disk center place is higher than the axis of barrel.Wherein, O is the axis of barrel, and P is the center of eccentric rotary dish, and x, y direction distance of P and O is for being f, and the distance of chute center line and barrel axes O is e, wherein f<e.The circular arc QS center of circle is in barrel axes O, and radius is D/2, D is barrel internal diameter, 0≤∠ QOS≤70 °; The circular arc TU center of circle is positioned in x-axis, and distance machine barrel center O is Ec, Ec is the maximum sliding distance of eccentric rotary dish in x-axis, and radius is D/2; Circular arc UVQ is vertical through the angle separated time of some V, XV and ∠ QOS, and D/7<PV<D/2, circular arc TXS are through some X, and D/7<PX<D/2.
Embodiment 6
A kind of slidingtype self adaptation plasticizing of the present embodiment extrusion device, compared with embodiment 1, its difference is, in eccentric rotary assembly, each eccentric rotary dish is oval; In two adjacent eccentric rotary dishes, as shown in Figure 10, the both sides of an eccentric rotary dish are respectively equipped with T-slot, and the both sides of another eccentric rotary dish are respectively equipped with T-shaped projection, and each projection and corresponding T-slot form chute 4-1.
Embodiment 7
A kind of slidingtype self adaptation plasticizing of the present embodiment extrusion device, as shown in figure 11, the screw mechanism comprising barrel 1 and be located in barrel, screw mechanism comprises coaxial the positive feed screw rod 2, vented screw 10 and the metering extrusion screw rod 3 that arrange, connected by the first eccentric rotary assembly 11 between positive feed screw rod and vented screw, connected by the second eccentric rotary assembly 12 between vented screw and metering extrusion screw rod; First eccentric rotary assembly and the second eccentric rotary assembly are coaxially arranged, and comprise multiple eccentric rotary dish 4 respectively, are connected with a joggle between adjacent two eccentric rotary dishes by chute; Barrel comprises the solid conveying section 5, melting mixing section 6, exhaust section 13, secondary mixing section 14 and the metering extruding zone 7 that connect successively, positive feed screw rod is positioned at the solid conveying section of barrel, first eccentric rotary assembly is positioned at the melting mixing section of barrel, vented screw is positioned at the exhaust section of barrel, second eccentric rotary assembly is positioned at the secondary mixing section of barrel, and metering extrusion screw rod is positioned at the metering extruding zone of barrel.Wherein, the screw rod that positive feed screw rod, vented screw and metering extrusion screw rod can adopt cross sectional shape different, and the threaded outer profile line of positive feed screw rod, vented screw and metering extrusion screw rod is all tangent with the inwall of barrel, the inner chamber of barrel is made up of the cylinder groove that is communicated with.
In first eccentric rotary assembly and the second eccentric rotary assembly, each eccentric rotary dish is oval or the combined shaped of four arcs (when eccentric rotary dish is for time oval, its concrete structure is identical with embodiment 1; When eccentric rotary dish is the combined shaped of four arcs, its concrete structure is identical with embodiment 5); In two the eccentric rotary dishes connected, the both sides of an eccentric rotary dish are respectively equipped with dovetail groove, and the both sides of another eccentric rotary dish are respectively equipped with the projection of swallow-tail form, and each projection and corresponding dovetail groove form chute;
First eccentric rotary assembly comprises 5 oval eccentric rotary dishes, and each eccentric rotary dish is the arrangement of 45 °, stagger arrangement angle;
Second eccentric rotary assembly comprises 3 oval eccentric rotary dishes, and each eccentric rotary dish is the arrangement of 45 °, stagger arrangement angle.
By said apparatus, a kind of slidingtype self adaptation plasticating and extruding method can be realized, comprise the following steps:
(1) after material enters barrel, be introduced into solid conveying section, travel forward under the promotion of positive feed screw rod;
(2) after material movement to melting mixing section, the first eccentric rotary assembly rotates, and pressing materials accelerates melting;
On the downside of each eccentric rotary dish and form first compression space between material tube inner wall, on the upside of each eccentric rotary dish and form second-compressed space between material tube inner wall; In first compression space, when the compaction rate of eccentric rotary dish exceedes melting speed, along slide under the effect of eccentric rotary dish material in first compression space, the volume enlargement in first compression space, the material in eccentric rotary dish extruding second-compressed space; Material accelerates melting under the first compression space of each eccentric rotary dish and the alternate compression effect in second-compressed space, forms self adaptation melting process, thus converts melt to;
(3), after melt enters exhaust section, travel forward under the promotion of vented screw, to discharge in melt simultaneously with gas;
(4) after melt enters secondary mixing section, the second eccentric rotary assembly rotates, and extruding melt travels forward one-step melting melting of going forward side by side;
(5), after melt enters metering extruding zone, metering extrusion screw rod rotates, by melt extrusion.
As mentioned above, just can realize the utility model preferably, above-described embodiment is only preferred embodiment of the present utility model, is not used for limiting practical range of the present utility model; Namely all equalizations done according to the utility model content change and modify, all by the utility model claim scope required for protection is contained.
Claims (8)
1. slidingtype self adaptation plasticizing extrusion device, comprise barrel and be located at the screw mechanism in barrel, it is characterized in that, screw mechanism comprises the coaxial positive feed screw rod arranged and metering extrusion screw rod, is connected between positive feed screw rod and metering extrusion screw rod by eccentric rotary assembly; Eccentric rotary assembly comprises the coaxial multiple eccentric rotary dishes arranged, and is connected with a joggle between adjacent two eccentric rotary dishes by chute; Barrel comprises the solid conveying section, melting mixing section and the metering extruding zone that connect successively, and positive feed screw rod is positioned at the solid conveying section of barrel, and eccentric rotary assembly is positioned at the melting mixing section of barrel, and metering extrusion screw rod is positioned at the metering extruding zone of barrel.
2. slidingtype self adaptation plasticizing extrusion device according to claim 1, is characterized in that, in described eccentric rotary assembly, each eccentric rotary dish is oval; In two adjacent eccentric rotary dishes, the both sides of an eccentric rotary dish are respectively equipped with dovetail groove, and the both sides of another eccentric rotary dish are respectively equipped with the projection of swallow-tail form, and each projection and corresponding dovetail groove form chute.
3. slidingtype self adaptation plasticizing extrusion device according to claim 2, it is characterized in that, in described eccentric rotary assembly, when eccentric rotary assembly is in original state, the center of each eccentric rotary dish is on the same axis; The axis of positive feed screw rod, the metering axis of extrusion screw rod and the dead in line of barrel; Barrel horizontal positioned, the axis at each eccentric rotary disk center place is higher than the axis of barrel;
On positive feed screw rod, the end face be connected with eccentric rotary assembly is provided with dovetail groove;
On metering extrusion screw rod, the end face be connected with eccentric rotary assembly is provided with dovetail groove.
4. slidingtype self adaptation according to claim 2 plasticizing extrusion device, is characterized in that, described eccentric rotary assembly comprises 5 or 7 oval eccentric rotary dishes,
When eccentric rotary assembly comprises 5 oval eccentric rotary dishes, each eccentric rotary dish is the arrangement of 45 °, stagger arrangement angle; On same eccentric rotary dish, the angle between the axis of two dovetail grooves is 90 °; On same eccentric rotary dish, the angle between the axis of two projections is 90 °;
When eccentric rotary assembly comprises 7 oval eccentric rotary dishes, each eccentric rotary dish is the arrangement of 30 °, stagger arrangement angle; On same eccentric rotary dish, the angle between the axis of two dovetail grooves is 90 °; On same eccentric rotary dish, the angle between the axis of two projections is 90 °.
5. slidingtype self adaptation plasticizing extrusion device according to claim 1, is characterized in that, in described eccentric rotary assembly, each eccentric rotary dish is oval; In two adjacent eccentric rotary dishes, the both sides of an eccentric rotary dish are respectively equipped with T-slot, and the both sides of another eccentric rotary dish are respectively equipped with T-shaped projection, and each projection and corresponding T-slot form chute.
6. slidingtype self adaptation plasticizing extrusion device according to claim 1, it is characterized in that, in described eccentric rotary assembly, each eccentric rotary dish is the combined shaped of four arcs; When eccentric rotary assembly is in original state, on the same axis, barrel horizontal positioned, the axis at each eccentric rotary disk center place is higher than the axis of barrel at the center of each eccentric rotary dish.
7. slidingtype self adaptation plasticizing extrusion device, comprise barrel and be located at the screw mechanism in barrel, it is characterized in that, described screw mechanism comprises coaxial the positive feed screw rod, vented screw and the metering extrusion screw rod that arrange, connected by the first eccentric rotary assembly between positive feed screw rod and vented screw, connected by the second eccentric rotary assembly between vented screw and metering extrusion screw rod; First eccentric rotary assembly and the second eccentric rotary assembly are coaxially arranged, and comprise multiple eccentric rotary dish respectively, are connected with a joggle between adjacent two eccentric rotary dishes by chute; Barrel comprises the solid conveying section, melting mixing section, exhaust section, secondary mixing section and the metering extruding zone that connect successively, positive feed screw rod is positioned at the solid conveying section of barrel, first eccentric rotary assembly is positioned at the melting mixing section of barrel, vented screw is positioned at the exhaust section of barrel, second eccentric rotary assembly is positioned at the secondary mixing section of barrel, and metering extrusion screw rod is positioned at the metering extruding zone of barrel.
8. slidingtype self adaptation according to claim 7 plasticizing extrusion device, is characterized in that, in described first eccentric rotary assembly and the second eccentric rotary assembly, each eccentric rotary dish is combined shaped that is oval or four arcs; In two the eccentric rotary dishes connected, the both sides of an eccentric rotary dish are respectively equipped with dovetail groove, and the both sides of another eccentric rotary dish are respectively equipped with the projection of swallow-tail form, and each projection and corresponding dovetail groove form chute;
First eccentric rotary assembly comprises 5 oval eccentric rotary dishes, and each eccentric rotary dish is the arrangement of 45 °, stagger arrangement angle;
Second eccentric rotary assembly comprises 3 oval eccentric rotary dishes, and each eccentric rotary dish is the arrangement of 45 °, stagger arrangement angle.
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| CN201420201101.0U CN204109329U (en) | 2014-04-23 | 2014-04-23 | Slidingtype self adaptation plasticizing extrusion device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921427A (en) * | 2014-04-23 | 2014-07-16 | 广东轻工职业技术学院 | Sliding self-adaptive plasticizing extruding device and method |
| WO2019134250A1 (en) * | 2018-01-04 | 2019-07-11 | 武军 | Pulsating plasticizing screw based on volume deformation |
| CN112372976A (en) * | 2020-09-08 | 2021-02-19 | 广东轻工职业技术学院 | High-strength homodromous differential asymmetric double-screw extruder and processing method |
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2014
- 2014-04-23 CN CN201420201101.0U patent/CN204109329U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921427A (en) * | 2014-04-23 | 2014-07-16 | 广东轻工职业技术学院 | Sliding self-adaptive plasticizing extruding device and method |
| CN103921427B (en) * | 2014-04-23 | 2016-08-17 | 广东轻工职业技术学院 | Slidingtype self adaptation plasticizing extrusion device and method |
| WO2019134250A1 (en) * | 2018-01-04 | 2019-07-11 | 武军 | Pulsating plasticizing screw based on volume deformation |
| CN112372976A (en) * | 2020-09-08 | 2021-02-19 | 广东轻工职业技术学院 | High-strength homodromous differential asymmetric double-screw extruder and processing method |
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