CN103056979B - Based on macromolecular material continuous mixing process intensification method and the device of eccentric screw - Google Patents

Based on macromolecular material continuous mixing process intensification method and the device of eccentric screw Download PDF

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Publication number
CN103056979B
CN103056979B CN201210560764.7A CN201210560764A CN103056979B CN 103056979 B CN103056979 B CN 103056979B CN 201210560764 A CN201210560764 A CN 201210560764A CN 103056979 B CN103056979 B CN 103056979B
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helical rotor
rotor
triangular shape
fin body
shape fin
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CN103056979A (en
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瞿金平
晋刚
杨智韬
何和智
殷小春
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South China University of Technology SCUT
Guangzhou Huaxinke Industrial Co Ltd
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South China University of Technology SCUT
Guangzhou Huaxinke Industrial Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/505Screws
    • B29C48/67Screws having incorporated mixing devices not provided for in groups B29C48/52 - B29C48/66
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/482Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/484Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with two shafts provided with screws, e.g. one screw being shorter than the other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/488Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/488Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
    • B29B7/489Screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/388Plasticisers, homogenisers or feeders comprising two or more stages using a screw extruder and a ram or piston
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/42Non-identical or non-mirrored screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/505Screws
    • B29C48/54Screws with additional forward-feeding elements

Abstract

The invention discloses the macromolecular material continuous mixing process intensification method based on eccentric screw and device.The method utilize with two helical rotors of respective rotation axis off-center incorgruous engage rotate time, periodically change from small to big from large to small in the gap in rotor and stator inner wall face, the radial back lash of two rotors and axial back lash, material is reinforced in the process of two rotor axial circulation continuous mixings again.The rotation of two helical rotors is fixed and is parallel to each other, and rotor outer surface is eccentric engagement type fin structure, and its central axis and rotor rotation axis exist certain offset.When two rotor internal messing rotate, include material in and plastified to extrude with rotor and the gap in stator inner wall face, the radial back lash of two rotors and the cyclically-varying of axial back lash and carry, thus reach and strengthen banburying effect.The present invention can realize macromolecular material continuous mixing process, has and enhances productivity, Improving The Quality of Products, reduces the feature of energy consumption etc. simultaneously.

Description

Based on macromolecular material continuous mixing process intensification method and the device of eccentric screw
Technical field
The present invention relates to polymer material mixing processing method and device, specifically refer to the macromolecular material continuous mixing process intensification method based on eccentric screw and device.
Technical background
Along with the development of macromolecular material subject, the goods of macromolecular material are widely used in industry-by-industry field, and any macromolecular material all needs just can become useful goods by processing and forming.Therefore, the contour machining procedure of macromolecular material and process equipment seem particularly important for the performance of macromolecule material product.Wherein, the internal mixing pass of macromolecular material is a step important in whole process.Traditional processing method is mainly plasticated with mixing based on banbury.Banbury is step to the internal mixing pass of macromolecular material, its banburying process is: material drops into mixing room from banbury charge door, shearing, kneading, mixing, plasticizing and homogenizing is born under the compound action of external force and outer heat, finally open Dump gate the material mixed is discharged, then carry out the banburying of next group material.Banbury is simple to operate, and material is without the need to carrying out special pretreatment, equipment operation principle is easily grasped, but due to the intermittence mixing of banbury, every a collection of mixing material all has difference, adds the raising that the factor such as the fluctuation of energy in mixing process and the flow behavior of mixing chamber material limits the quality of mixing material.The mixing material that this step traditional banburying equipment obtains has been difficult to meet the requirement that modern industry produces mid-to high-end product.There is the inherent shortcomings such as equipment energy consumption is large, product quality fluctuation is large, production efficiency is low, banburying limited efficiency in traditional banbury, has become the difficult problem that of processing of high molecular material development is urgently to be resolved hurrily.Therefore, the mixed refining process of macromolecular material urgently has new breakthrough and progress on technology and equipment.
In order to improve the production efficiency of macromolecular material banburying, improve the quality of banburying product and reduce energy consumption as much as possible, researcher has done the optimizing research of a large amount of technique and equipment aspect.New technique, as the exploitation of mixing formula more optimized; Equipment optimization aspect is mainly to the mixing rotor of mixing facilities or the improvement of screw rod.These researchs improve mixing production efficiency in certain degree, also increase to the quality of mixing product simultaneously, but in reduction energy consumption effect not obvious, be difficult to reach energy-efficient effect.
Summary of the invention
The object of the present invention is to provide a kind of macromolecular material continuous mixing process intensification method based on eccentric screw, to solve the problems such as energy consumption is high, internal mixing pass is discontinuous, efficiency is low in macromolecular material banburying process.
The present invention also aims to provide a kind of macromolecular material continuous mixing process intensification device based on eccentric screw realizing described method.
The object of the invention is achieved through the following technical solutions:
A kind of macromolecular material continuous mixing process intensification method based on eccentric screw: utilize with the first helical rotor of respective rotation axis off-center and the second helical rotor incorgruous engage rotate time, periodically change from small to big from large to small in radial back lash and the axial back lash of the gap in the first helical rotor and the second helical rotor and stator inner wall face, the first helical rotor and the second helical rotor, material is reinforced in the process of two rotor axial circulation continuous mixings again.
The macromolecular material continuous mixing process intensification device based on eccentric screw of described method, forms primarily of the first helical rotor and the second helical rotor and stator with respective rotation axis off-center; First helical rotor and the engagement of the second helical rotor counter rotating, be placed in hollow stator; The outer surface of the first helical rotor and the second helical rotor is eccentric engagement type fin structure, identical offset is there is respectively in the fin structure axis of the first helical rotor and the fin structure axis of the second helical rotor with this rotor rotation axis of the first helical rotor and the rotor rotation axis of the second helical rotor, and the identical arrangement of horizontal eccentric direction of the first helical rotor and the second helical rotor, offset is greater than 0 and is less than the difference of the fin body structure surface radius of bore of stator radius and helical rotor;
First helical rotor and the second helical rotor are equipped with three pieces of identical fin bodies of arrangement, and the first helical rotor is respectively equipped with the first spiral ridge body, the first triangular shape fin body and the second triangular shape fin body; Second helical rotor is respectively equipped with the second spiral ridge body, the 3rd triangular shape fin body and the 4th triangular shape fin body; First spiral ridge body and the second spiral ridge body are the conveyor screw of rotor cylindrical outer surface axis; First triangular shape fin body and the second triangular shape fin body and the 3rd triangular shape fin body and the 4th triangular shape fin body are respectively and are arranged on two ends of rotor, the triangular shape fin body of summit staggered relative distribution; The clearance meshing that the first spiral ridge body on first helical rotor, the first triangular shape fin body and the second triangular shape fin body are formed with the second spiral ridge body on the second helical rotor, the 3rd triangular shape fin body and the 4th triangular shape fin body respectively.
Preferably, described offset is greater than 1/3rd of the difference of the fin body structure surface radius of bore of stator radius and helical rotor, is less than the difference of the fin body structure surface radius of bore of stator radius and helical rotor.
When the present invention two rotor internal messing rotates, because the axis of helical rotor fin structure is eccentric with this rotor rotation axis, periodically changing from small to big from large to small in the gap in rotor and stator inner wall face, the radial back lash of two rotors and axial back lash, includes material in and plastified to extrude with rotor and the gap in stator inner wall face, the radial back lash of two rotors and the cyclically-varying of axial back lash and carry again.In this continuous print cyclically-varying process, material bears shearing, stretching, mixing, plasticizing and homogenizing under the compound action of external force and outer heat, thus reaches material strengthening banburying effect.
The present invention adopts based on the macromolecular material continuous mixing process intensification method of eccentric screw and device, the problem such as solve conventional polymer material banburying technology and device fabrication is discontinuous, efficiency is low, energy consumption is high, compared with conventional polymer material banburying technology and equipment, tool has the following advantages:
1, material mixing process is continuous, improving productivity, and energy consumption reduces, and mixing degree is highly stable, material dispersion good mixing effect;
2, the ability of mixing plasticizing does not rely on the physical characteristic of material, and the stability of banburying improves, and improves the adaptability of material;
3, the process of whole mixing plasticizing makes the stretching of material and the intensity of shearing all improve, and melting effect is good, and product quality improves, and reduces production cost.
Accompanying drawing explanation
Fig. 1 is the macromolecular material continuous mixing process intensification apparatus structure schematic diagram based on eccentric screw;
Fig. 2 is the A A sectional view of Fig. 1;
Fig. 3 is eccentric screw mixing rotor structural representation;
Fig. 4 combines continuous mixing device structure schematic diagram based on the macromolecular material continuous mixing process intensification device of eccentric screw and screw rod feeding device;
Fig. 5 is the injection device structural representation of the macromolecular material continuous mixing process intensification device based on eccentric screw.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described further, but the scope of protection of present invention is not limited to the scope of embodiment statement.
Embodiment 1
As shown in Figure 1, Figure 2, shown in Fig. 3, a kind of macromolecular material continuous mixing process intensification device based on eccentric screw forms primarily of the first helical rotor I and the second helical rotor II and stator 8 with respective rotation axis off-center; First helical rotor I and the engagement of the second helical rotor II counter rotating, be placed in hollow stator 8.The outer surface of the first helical rotor I and the second helical rotor II is eccentric engagement type fin structure, identical eccentric amount e is there is respectively in the fin structure axis 2 of the first helical rotor I and the fin structure axis 5 of the second helical rotor II with this rotor rotation axis 3 of the first helical rotor and the rotor rotation axis 7 of the second helical rotor, and the identical arrangement of horizontal eccentric direction of the first helical rotor I and the second helical rotor II, eccentric amount e is greater than 0 and is less than the difference of the fin body structure surface radius of stator 8 inner chamber radius and helical rotor.Preferably, offset is greater than 1/3rd of the difference of the fin body structure surface radius of bore of stator radius and helical rotor, is less than the difference of the fin body structure surface radius of bore of stator radius and helical rotor.First helical rotor I and the second helical rotor II are connected with the first concentric shafts 1 and the second concentric shafts 6 respectively; First helical rotor I and the second helical rotor II are equipped with three pieces of identical fin bodies of arrangement, and the first helical rotor I is respectively equipped with the first spiral ridge body 14, first triangular shape fin body 15 and the second triangular shape fin body 17; Second helical rotor II is respectively equipped with the second spiral ridge body 10, the 3rd triangular shape fin body 4 and the 4th triangular shape fin body 13; First spiral ridge body 14 and the second spiral ridge body 10 are the conveyor screw of rotor cylindrical outer surface axis; First triangular shape fin body 15 and the second triangular shape fin body 17 and the 3rd triangular shape fin body 4 and the 4th triangular shape fin body 13 are respectively and are arranged on two ends of rotor, the triangular shape fin body of summit staggered relative distribution; First helical rotor I and the second helical rotor internal messing rotate, the clearance meshing that the first spiral ridge body 14, first triangular shape fin body 15 on the first helical rotor I and the second triangular shape fin body 17 are formed with the second spiral ridge body 10 on the second helical rotor II, the 3rd triangular shape fin body 4 and the 4th triangular shape fin body 13 respectively.First helical rotor I and the second helical rotor internal messing rotate the change causing eccentric direction relative position, make the first gap 16, gap 9, second of the first helical rotor I and the second helical rotor and stator 8 internal face and and the radial back lash 11 of the first helical rotor I and the second helical rotor and axial back lash 12 all change in periodically changing from small to big again from large to small, the material including this gap in is polished along with the volume change in gap, extrudes, carries, and material is reinforced in the process of two rotor axial circulation continuous mixings.
Embodiment 2
With reference to figure 4, eccentric rotor, screw combinations continuous mixing equipment are primarily of Dual-screw feeding device I, the continuous mixing process intensification device II based on eccentric screw, conveying shaping equipment III tri-part composition.Wherein pay-off I mainly realizes interpolation and the conveying of material, and the continuous mixing process intensification device II based on eccentric screw mainly realizes the banburying strengthening effect of material, and conveying shaping equipment III then realizes material and exports and product molding.Pay-off I is by the first turning cylinder 9 and the second turning cylinder 10 arranging twin-screw parts 11 and feeding device 8 forms, continuous mixing process intensification device II based on eccentric screw forms primarily of the first eccentric screw rotor 7, second eccentric screw rotor 12, and conveying shaping equipment III is made up of singe screw parts 2 and discharging shaping equipment 1.Wherein, first eccentric screw rotor 7 and the incorgruous engagement of the second eccentric screw rotor 12, first helical rotor I and the second helical rotor II are equipped with three pieces of identical fin bodies of arrangement, and the first helical rotor 7 is respectively equipped with the first spiral ridge body 5, first triangular shape fin body 4 and the second triangular shape fin body 6; Second helical rotor 12 is respectively equipped with the second spiral ridge body 14, the 3rd triangular shape fin body 15 and the 4th triangular shape fin body 13; First spiral ridge body 5 and the second spiral ridge body 14 are the conveyor screw of rotor cylindrical outer surface axis; First triangular shape fin body 4 and the second triangular shape fin body 6 and the 3rd triangular shape fin body 15 and the 4th triangular shape fin body 13 are respectively and are arranged on two ends of rotor, the triangular shape fin body of summit staggered relative distribution; First helical rotor 7 and the second helical rotor 12 internal messing rotate, the clearance meshing that the first spiral ridge body 5, first triangular shape fin body 4 on the first helical rotor 7 and the second triangular shape fin body 6 are formed with the second spiral ridge body 14 on the second helical rotor 12, the 3rd triangular shape fin body 15 and the 4th triangular shape fin body 13 respectively.First eccentric screw rotor 7 and first turning cylinder 9 of the second eccentric screw rotor 12 outer surface axis with this rotor and the eccentric axis of the second turning cylinder 10, the continuous mixing process intensification device II feed end of eccentric screw is connected with Dual-screw feeding device I or into a single integrated structure, and the continuous mixing process intensification device II discharge end of eccentric screw is connected with screw rod transmission shaping equipment III or into a single integrated structure.Material adds from charging aperture 8, first the shearing through Dual-screw feeding device I is mixing, be delivered to the continuous mixing process intensification device II of eccentric screw again, utilize the gap of the first eccentric screw rotor 7 and the second eccentric screw rotor 12 and stator 3 internal face, periodically change from small to big from large to small again in the radial back lash of the first eccentric screw rotor 7 and the second eccentric screw rotor 12 and axial back lash, material is reinforced in the process of the first eccentric screw rotor 7 and the second eccentric screw rotor 12 axial circulation continuous mixing, finally by carrying shaping equipment III outputting material and moulded products.Macromolecular material be subject to the stretching of high strength and shear action by efficient mixing plasticizing while, realize low consumption, continuously, stable extrusion.
Embodiment 3
With reference to figure 5, the injection device based on the macromolecular material continuous mixing process intensification device of eccentric screw forms primarily of macromolecule material plasticizing supply unit I, plunger injection unit II and loading head 5.Macromolecule material plasticizing supply unit I, mainly comprises the parts such as hopper 1, first screw rod transmission parts 2, second screw rod transmission parts 4 and continuous mixing process intensification device 3; Plunger injection unit II mainly comprises the parts such as injection cylinder 6, injection piston 7, injection barrel 8, cavity volume 9, aggregate pipe 10 and nozzle 11; Loading head 5 connects material plasticizing supply unit I and plunger injection unit II two parts, its charging end face is fixedly connected with the discharging end face excessively put of plasticizing supply unit I, its discharging end face is fixedly connected with the charging end face of the injection barrel 8 of plunger injection unit II, and cavity volume 9 is connected with aggregate pipe 10.Material joins macromolecule material plasticizing supply unit I from hopper 1, continuous mixing process intensification device 3 (structure of continuous mixing process intensification device 3 and principle are with the macromolecular material continuous mixing process intensification device based on eccentric screw of embodiment 1) is arrived through the conveying of screw rod transmission parts 2, material is reinforced in the process of two eccentric screw rotor axial circulation continuous mixings, by screw rod transmission parts 4, the melt plastified is delivered into through loading head 5 in the injection barrel 8 of plunger injection unit II subsequently, move backward under the effect of injection piston 7 melt pressure in nozzle cavity volume 9, reach after presetting metering, under injection pressure promotes, injection is completed forward by injection piston 7, enter the next process-cycle simultaneously.

Claims (3)

1. the macromolecular material continuous mixing process intensification method based on eccentric screw, it is characterized in that, utilize with the first helical rotor of respective rotation axis off-center and the second helical rotor incorgruous engage rotate time, periodically change from small to big from large to small in radial back lash and the axial back lash of the gap in the first helical rotor and the second helical rotor and stator inner wall face, the first helical rotor and the second helical rotor, material is reinforced in the process of two rotor axial circulation continuous mixings again; When described radial back lash and axial back lash are by the first helical rotor and the rotation of the second helical rotor internal messing, the first spiral ridge body on the first helical rotor, the first triangular shape fin body and the second triangular shape fin body engage with the second spiral ridge body on the second helical rotor, the 3rd triangular shape fin body and the 4th triangular shape fin body respectively and are formed.
2. realize a device for method described in claim 1, it is characterized in that: this device forms primarily of the first helical rotor and the second helical rotor and stator with respective rotation axis off-center; First helical rotor and the engagement of the second helical rotor counter rotating, be placed in hollow stator; The outer surface of the first helical rotor and the second helical rotor is eccentric engagement type fin structure, identical offset is there is respectively in the fin structure axis of the first helical rotor and the fin structure axis of the second helical rotor with this rotor rotation axis of the first helical rotor and the rotor rotation axis of the second helical rotor, and the identical arrangement of horizontal eccentric direction of the first helical rotor and the second helical rotor, offset is greater than 0 and is less than the difference of the fin body structure surface radius of bore of stator radius and helical rotor;
First helical rotor and the second helical rotor are equipped with three pieces of identical fin bodies of arrangement, and the first helical rotor is respectively equipped with the first spiral ridge body, the first triangular shape fin body and the second triangular shape fin body; Second helical rotor is respectively equipped with the second spiral ridge body, the 3rd triangular shape fin body and the 4th triangular shape fin body; First spiral ridge body and the second spiral ridge body are the conveyor screw of rotor cylindrical outer surface axis; First triangular shape fin body and the second triangular shape fin body and the 3rd triangular shape fin body and the 4th triangular shape fin body are respectively and are arranged on two ends of rotor, the triangular shape fin body of summit staggered relative distribution; The clearance meshing that the first spiral ridge body on first helical rotor, the first triangular shape fin body and the second triangular shape fin body are formed with the second spiral ridge body on the second helical rotor, the 3rd triangular shape fin body and the 4th triangular shape fin body respectively.
3. device according to claim 2, is characterized in that: described offset is greater than 1/3rd of the difference of the fin body structure surface radius of bore of stator radius and helical rotor, is less than the difference of the fin body structure surface radius of bore of stator radius and helical rotor.
CN201210560764.7A 2012-12-20 2012-12-20 Based on macromolecular material continuous mixing process intensification method and the device of eccentric screw Active CN103056979B (en)

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