CN105773946A - Fixed-star screw plastic extruder - Google Patents
Fixed-star screw plastic extruder Download PDFInfo
- Publication number
- CN105773946A CN105773946A CN201610314814.1A CN201610314814A CN105773946A CN 105773946 A CN105773946 A CN 105773946A CN 201610314814 A CN201610314814 A CN 201610314814A CN 105773946 A CN105773946 A CN 105773946A
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- Prior art keywords
- fixed star
- screw
- star
- fixed
- vacuum
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- 239000004033 plastic Substances 0.000 title abstract description 6
- 229920003023 plastic Polymers 0.000 title abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 65
- 238000007766 curtain coating Methods 0.000 claims description 19
- 125000003003 spiro group Chemical group 0.000 claims description 18
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 14
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 10
- 238000005485 electric heating Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 239000002671 adjuvant Substances 0.000 claims description 4
- 238000010008 shearing Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 13
- 239000000047 product Substances 0.000 description 11
- 238000001125 extrusion Methods 0.000 description 8
- 239000000654 additive Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 239000012768 molten material Substances 0.000 description 6
- 230000000996 additive effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000002274 desiccant Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000012745 toughening agent Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/86—Component parts, details or accessories; Auxiliary operations for working at sub- or superatmospheric pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/297—Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
- B29B7/603—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material in measured doses, e.g. proportioning of several materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means 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
- B29C48/40—Means 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
- B29C48/425—Means 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 using three or more screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means 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
- B29C48/40—Means 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
- B29C48/435—Sub-screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/76—Venting, drying means; Degassing means
- B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
- B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
- B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a fixed-star screw plastic extruder. The fixed-star screw plastic extruder comprises a main machine driving device, a feeding part, a feeding section, a fixed-star plasticizing section, a fixed-star vacuum section, a fixed-star pressurizing section, a filter, a metering pump and a clothes rack type mold, all of which are sequentially connected. The feeding section comprises a feeding screw barrel and a feeding screw. The fixed-star plasticizing section comprises a fixed-star plasticizing barrel, a fixed-star main screw and a fixed-star small screw engaged with the fixed-star main screw. The fixed-star vacuum section comprises a vacuum barrel and an exhaust small screw engaged with the fixed-star main screw extending from the fixed-star plasticizing section. The fixed-star pressurizing section comprises a pressurizing barrel, a pressurizing main screw and a pressurizing screw engaged with the pressurizing main screw. The main machine driving device drives the feeding screw, the fixed-star main screw and the pressurizing main screw to rotate. The fixed-star main screw drives the fixed-star small screw and the exhaust small screw to rotate. The pressurizing main screw drives the pressurizing screw to rotate. Materials are subjected to high-temperature shearing and extruding to be molten in the fixed-star pressurizing section, and water in the materials is fast gasified to be separated out and completely discharged through the fixed-star vacuum section.
Description
Technical field
The invention belongs to plastic process equipment, be specifically related to a kind of curtain coating extruder equipment.
Background technology 8
Plastics have become a kind of indispensable articles for daily use and have manufactured material, arrived us and cannot leave its stage more than the wide and Varieties of replacement of the use scope that it relates to.Any plastics all can use extruder equipment when machine-shaping, at present, the commonly used extrusion equipment of the material such as prior art production and processing polyester PET, PETG, PP, PS is single screw rod, double screw extruder, the technological process of production is first to dry material then to add single screw rod, double screw extruder high temperature extrusion molding, i.e. first crystallizing and drying, rear fusion extrusion casting slab.There is following technological deficiency in above-mentioned extrusion equipment: the subsidiary engine 1, needed is many, causes occupation area of equipment big, safeguards loaded down with trivial details, need to regularly replace desiccant, heater, filter etc..2, length consuming time, crystallizing and drying needs 2 hours in advance, and desiccant dehumidification needs 4～5 hours, and the energy resource consumption caused therebetween is also huge.3, the powder produced after crystallization stirring is big.4, changing raw material handling difficulty, clearance time is about 2～3 hours.5, main frame, single screw rod or double screw extruder, structure is relatively simple, is only material carry, extrude, utilize external heat source to carry out extruding melting, causes inefficiency.6, plurality of raw materials is joined mixture manufacturing and is not stirred power by main frame.7, full reclaimed materials secondary processing product can't meet the quality requirement, and is unfavorable for effective utilization of resource.
In sum, existing extrusion equipment and first crystallizing and drying thereof, after the technological process of production that melt extrudes to there is the production time long, energy consumption is big, yields poorly, complex manufacturing, and full reclaimed materials such as can not be used effectively at the defect.
Summary of the invention
It is an object of the invention to the defect existed for prior art, there is provided and a kind of self possess desiccant dehumidification, melt extrude the fixed star screw rod curtain coating extruder of function, when process has the materials such as the polyester PET of hygroscopicity problems, it is no longer necessary to carry out crystallizing and drying process by subsidiary engine, be conducive to improving production efficiency, saving the energy, product quality is more stable.
The technical solution adopted for the present invention to solve the technical problems is: fixed star screw rod curtain coating extruder, including host driven installation, the feeding part being sequentially connected with, feeding section, fixed star fluxing zone, fixed star vacuum zone, fixed star boost section, filter, dosing pump and coat hanger die；
Described feeding section includes feeding barrel and feeding spiro rod；
Described fixed star fluxing zone includes fixed star plasticizing chamber, is positioned at the fixed star driving screw of fixed star plasticizing chamber central authorities, multiple fixed star small screws；Fixed star small screw is limited in the C-shaped channel of fixed star plasticizing chamber Smooth, is distributed in around fixed star driving screw, is meshed with the surface of fixed star driving screw；
Described permanent row vacuum zone includes vacuum cylinder and Duo Gen aerofluxus small screw；Aerofluxus small screw is limited in the C-shaped channel of vacuum cylinder Smooth, is intervally arranged extending around the fixed star driving screw come from fixed star fluxing zone, is meshed with the surface of fixed star driving screw；Vacuum cylinder is provided with vacuum chamber, and vacuum chamber is connected with vacuum-pumping equipment, vacuum feeding machine respectively, and vacuum feeding machine quantitatively adds adjuvant under vacuum conditions, as added toughener online；
Described permanent row supercharging material section includes pressurization cylinder, is positioned at the supercharging driving screw of pressurization cylinder central authorities, many supercharging screw rods；Supercharging screw rod is limited in the C-shaped channel of pressurization cylinder Smooth, is distributed in around supercharging driving screw, is meshed with the surface of supercharging driving screw；
Described feeding barrel, fixed star plasticizing chamber, vacuum cylinder and pressurization cylinder are fixedly connected successively, and junction is respectively equipped with thrust ring, the axial force that carrying fixed star small screw, aerofluxus small screw, supercharging screw rod produce when rotated between two；
Described fixed star plasticizing chamber, vacuum cylinder, pressurization cylinder barrel in, and the inside of fixed star driving screw is equipped with spiral intake chute, it is connected with conductive fluid supply arrangement by pipeline, wherein the internal helicoid intake chute of fixed star driving screw is connected with conductive fluid swivel joint by pipeline, conductive fluid supply arrangement is connected again by swivel joint, conductive fluid provides heat energy for above-mentioned parts, and to flowing through the melted required heat energy of material offer of fixed star fluxing zone, fixed star vacuum zone, fixed star boost section；
Host driven installation is sequentially connected with feeding spiro rod, fixed star driving screw and supercharging driving screw, drives it to rotate；Fixed star driving screw drives fixed star small screw, aerofluxus small screw to rotate；Supercharging driving screw drives supercharging screw rod to rotate；Material shear at high temperature in fixed star fluxing zone is squeezed into molten, moisture in material can be separated by Quick-gasifying, is completely exhausted out through fixed star vacuum material section, and material is after fixed star boost section supercharging, through filter, dosing pump, finally enter coat hanger die and discharge curtain coating slab.
Described host driven installation includes mair motor and main gear reducer, and mair motor is connected driving by main gear reducer with feeding spiro rod, and it rotates.
Described feeding part includes the first hopper and the first feeding machine coupled with it, the second hopper and the second feeding machine coupled with it, Masterbatch machine and blanking set；First, second feeding machine and Masterbatch machine couple with blanking set respectively, and blanking set couples with feeding barrel；First, second hopper fills full recovered material and brand-new material respectively, and Masterbatch machine is the quantitative drawing-in device of adjuvant, installs desired additives in advance according to product quality demand, is then quantitatively adding blanking set online, and the quantity of Masterbatch machine is at least one.
Described filter, dosing pump, coat hanger die is respectively equipped with electric-heating constant temp. device, all adopts programmable logic controller (PLC) PLC to control to carry out heated at constant temperature.
When using this equipment to produce, before start, the temperature of each for whole equipment section is adjusted in place by manufacturing technique requirent, it is separately added into first, second hopper with brand-new material afterwards exempting from crystals dried full reclaimed materials, first, second hopper is equipped with stuff level switch and watch window, adding to behind appropriate location until material, next the size according to volume of production, product hierarchy requires to control first, second feeding machine continuity feed respectively.Different demands according to product quality, such as the difference of color, viscosity or toughness of products, first install desired additives at Masterbatch machine, are quantitatively adding required additive further according to practical situation field control；
The driving operating of this equipment, driven the reduction gearing of main gear reducer by yielding coupling by mair motor, reduction gearing slow-speed shaft connects feeding spiro rod by spline, thus driving feeding spiro rod, fixed star driving screw and supercharging driving screw to rotate, drive fixed star small screw, aerofluxus small screw and supercharging screw rod to rotate simultaneously；
Feeding spiro rod is responsible for the conveying to material, feeding barrel serves as the runner of material, material is subject to high speed shear, extrusion friction from entering fixed star fluxing zone, shear extrusion is become molten at fluxing zone by graininess or lamellar by material at this moment, so far the moisture in shear melting shape material can separate by Quick-gasifying from material, and the moisture content at this moment gasified together drains into fixed star vacuum zone by the gap between planet small screw with material；
Material extrudes into fixed star vacuum zone through fixed star fluxing zone, and completely not melted granular material melts completely, and moisture content is sufficiently separated out, and gasification moisture content now is completely exhausted out by the vacuum chamber arranged on vacuum cylinder；
Perfect vacuum plastifying fusion shape material, is expressed into fixed star boost section by fixed star vacuum zone, and fixed star boost section is made up of pressurization cylinder, supercharging driving screw, supercharging screw rod.Supercharging driving screw engages with supercharging screw rod and together forms confined space with their pressurization cylinder of encapsulation, and screw rod rotates and makes confined space constantly be formed and previous movement, and the material packing space brought from fixed star vacuum zone is also discharged into forward filter；Filter is the automatic net-changing device of hydraulic pressure, and its service behaviour is filter the impurity in molten material, and the draping time is determined according to working flow pressure；Molten material after filtration controls the flow of material through dosing pump, and dispatch, to coat hanger die, discharges curtain coating slab from die lip mouth.
Fixed star screw rod curtain coating extruder of the present invention, as follows relative to the performance of its concrete beneficial effect of prior art:
1, to production and processing crystalline material, material need not be carried out crystallizing and drying dehumidifying by this equipment in advance, is so conducive to saving mass energy；
2, can 100 full salvage materials processing, equally possible reach ideal effect, be conducive to environmental conservation；
3, full salvage material and brand-new material can proportioning, the online interpolation of additive, the convenient products meeting different requirement online；
4, yield is big, energy consumption is low；
5, this equipment make material crystallizing and drying dehumidifying, plastifying fusion extrusion slab, disposable quick flowing forming, product quality is more stable, effect more preferably；
6, simplify existing production technology and simplify the operating process of equipment simultaneously.
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention structural representation；
Description of reference numerals:
101, the first hopper；102, the first feeding machine；103, the first frequency-change feeding motor；
201, the second hopper；202, the second feeding machine；203, the second frequency-change feeding motor；
5, Masterbatch machine；6, blanking set；7, mair motor；8, main gear reducer；9, conductive fluid swivel joint；
10, feeding barrel；11, feeding spiro rod；12, thrust ring；13, fixed star plasticizing chamber；14, fixed star driving screw；15, fixed star small screw；16, vacuum chamber；17, vacuum cylinder；18, aerofluxus small screw；19, pressurization cylinder；20, supercharging driving screw；21, supercharging screw rod；22, filter；23, dosing pump；24, frequency conversion motors of metering pumps；25, coat hanger die；26, base.
Detailed description of the invention
Fixed star screw rod curtain coating extruder as shown in Figure 1, including host driven installation, the feeding part being sequentially connected with, feeding section, fixed star fluxing zone, fixed star vacuum zone, fixed star boost section, filter 22, dosing pump 23 and coat hanger die 25；
Described feeding section includes feeding barrel 10 and feeding spiro rod 11, and feeding spiro rod 11 is positioned at feeding barrel 10, and is connected with host driven installation；
Described fixed star fluxing zone is by fixed star plasticizing chamber 13, fixed star driving screw 14, and multiple fixed star small screws 15 are constituted,
Fixed star driving screw 14 is positioned at the central authorities of fixed star plasticizing chamber 13, and fixed star small screw 15 is limited in the C-shaped channel of fixed star plasticizing chamber Smooth, is distributed in around fixed star driving screw 15；The surface of fixed star driving screw 14 and fixed star small screw 15 is provided with intermeshing screw gear type profile；Fixed star driving screw 14 is connected with feeding spiro rod 11, and fixed star driving screw 14 rotarily drives fixed star small screw 15 and rotates；
Described permanent row vacuum zone includes vacuum cylinder 17 and Duo Gen aerofluxus small screw 18；Aerofluxus small screw 18 is limited in the C-shaped channel of vacuum cylinder Smooth, and surface is provided with screw gear type profile, is meshed with extending, from fixed star fluxing zone, the fixed star driving screw 14 come, and many aerofluxus small screws 18 are intervally arranged around fixed star driving screw 14；Vacuum cylinder 17 is provided with vacuum chamber 16, vacuum chamber 16 respectively with vacuum-pumping equipment, vacuum feeding machine is connected, and vacuum feeding machine is the device of a set of feeding of accurate quantification under vacuum conditions, as the addition of online additive, as added toughener etc.；The vacuum pressure value of vacuum chamber 16 is automatically controlled by vacuum pressure control part, it is achieved the moisture that gasification separation in fixed star vacuum zone material goes out is completely exhausted out by vacuum-pumping equipment；
Described permanent row supercharging material section is by pressurization cylinder 19, supercharging driving screw 20, and many supercharging screw rods 21 are constituted, and supercharging driving screw 20 is positioned at the central authorities of pressurization cylinder 19, and supercharging screw rod 21 is limited in the C-shaped channel of pressurization cylinder Smooth, is distributed in around supercharging driving screw 20；The surface of supercharging driving screw 20 and supercharging screw rod 21 is provided with intermeshing screw gear type profile, and supercharging driving screw 20 is connected with fixed star driving screw 14, supercharging driving screw 20 rotarily drive supercharging screw rod 21 and rotate；
Described feeding barrel 10, fixed star plasticizing chamber 13, vacuum cylinder 17 and pressurization cylinder 19 are fixedly connected successively, the centre of junction is respectively equipped with thrust ring 12 between two, and carrying fixed star small screw 15, aerofluxus small screw 18 and supercharging screw rod 21 be produced axial force when rotated；
Described fixed star plasticizing chamber 13, vacuum cylinder 17, pressurization cylinder 19 barrel in, and the inside of fixed star driving screw 14 is equipped with spiral intake chute, it is connected with conductive fluid supply arrangement by pipeline, wherein the internal helicoid intake chute of fixed star driving screw 14 is connected with conductive fluid swivel joint 9 by pipeline, then is connected conductive fluid supply arrangement by swivel joint 9；Conductive fluid provides heat energy for above-mentioned parts, and to flowing through the melted required heat energy of material offer of fixed star fluxing zone, fixed star vacuum zone, fixed star boost section；
Described host driven installation includes mair motor 7 and main gear reducer 8, mair motor 7 drives the power shaft of main gear reducer 8 by yielding coupling, the output shaft of main gear reducer 8 connects feeding spiro rod 11 by spline, feeding spiro rod 11, fixed star driving screw 14 and supercharging driving screw 20 spline successively connect, host driven installation drive it to rotate；Fixed star driving screw 14 rotarily drives fixed star small screw 15, aerofluxus small screw 18 rotates；Supercharging driving screw 20 rotarily drives supercharging screw rod 21 and rotates；
Described feeding part includes the first hopper 101 and the first feeding machine 102 coupled with it, the second hopper 201 and the second feeding machine 202 coupled with it, Masterbatch machine 5 and blanking set 6；First feeding machine the 102, second feeding machine 202 is driven by first frequency-change feeding motor the 103, second frequency-change feeding motor 203 respectively；First feeding machine the 102, second feeding machine 202 and Masterbatch machine 5 couple with blanking set respectively, and blanking set 5 couples with feeding barrel 10；First, second hopper fills full recovered material and brand-new material respectively, and Masterbatch machine 5 is the quantitative drawing-in device of additive, and the quantity of Masterbatch machine is at least one, it is preferable that design Masterbatch machine is two；
This motion fixed star screw rod curtain coating extruder is when production and application, before start, first by Product Process temperature requirement, fixed star fluxing zone fixed star plasticizing chamber 13, fixed star vacuum zone vacuum cylinder 17, fixed star boost section pressurization cylinder 19, filter 22, dosing pump 23, coat hanger die 25 are heated to set point of temperature, and it is incubated half an hour, it is separately added into the first hopper 101 and the second hopper 102 with brand-new material afterwards exempting from crystals dried full reclaimed materials, hopper is provided with charge level controller and watch window, control hopper material number；Next the size according to volume of production, product hierarchy requirement controls the first frequency-change feeding motor 103 respectively and the second frequency-change feeding motor 203 carries out continuous feed.Different demands according to product quality, such as the difference of color, viscosity or toughness of products, install required additive in two Masterbatch machines 5 in advance, are quantitatively adding further according to practical situation field control；
Mair motor 7 drives the power shaft of main gear reducer 8 by yielding coupling, and the feeding spiro rod 11 that the output shaft of main gear reducer 8 connects driving feeding section by spline operates, and feeding spiro rod 11 is responsible for the conveying to material, and feeding barrel 10 plays the effect of material channel；The uninterrupted continuous feeding of feeding part；Material delivers into feeding section from feeding part, pushed into fixed star fluxing zone by 11 material continuities of feeding spiro rod, fixed star driving screw 14 and fixed star small screw 15 engage operating in fixed star plasticizing chamber 13, fixed star plasticizing chamber 13 serves as support and channeling, material is through the rolling of fixed star driving screw 14 and fixed star small screw 15, extruding and shearing, and plasticizing under the effect of self friction heat and outside conductive fluid heat, fixed star driving screw 14 and fixed star small screw 15 engagement operating cooperatively form, with fixed star plasticizing chamber 13, the confined space that section is not run forward continuously while material is produced rolling extruding, material ceaselessly travels forward while plasticizing, moisture in plasticizing material simultaneously can be separated by Quick-gasifying, the gas separated is expelled to fixed star vacuum zone with material；The vacuum chamber 16 of fixed star vacuum zone is connected with vacuum-pumping equipment, and the vacuum pressure value of vacuum chamber 16 is automatically controlled by vacuum pressure control part, it is achieved the moisture that gasification separation in fixed star vacuum zone material goes out is completely exhausted out by vacuum-pumping equipment；Material behind perfect vacuum enters into the confined space that fixed star boost section, supercharging driving screw 20, supercharging screw rod 21 and pressurization cylinder 19 three be collectively forming and material carries out pressure-increasing unit to filter 22, impurity filtering by the drainage screen of filter 22 in molten material；Molten material after filtration controls the flow of material through dosing pump 23, and dispatch, to coat hanger die 25, discharges curtain coating slab from die lip mouth.
Described filter 22 adopts the automatic net-changing device of hydraulic pressure, and its service behaviour is filter the impurity in molten material, and the draping time is determined according to working flow pressure, and filter 22 is provided with electric-heating constant temp. device, preferential employing electrical bar heated constant temperature.
The effect of dosing pump 23 is the pressure flow of constant molten material, situation few when guaranteeing many when material does not have, it drives and is coupled driving by frequency conversion motors of metering pumps 24 by universal joint, and dosing pump 23 is provided with electric-heating constant temp. device, preferentially adopts electrical bar heated constant temperature.
Coat hanger die 25 is provided with electric-heating constant temp. device, preferential employing electrical bar heated constant temperature.
This fixed star screw rod curtain coating extruder is provided with base 26 and is supported, and base 26 is the support of a formed steel construction.
This equipment motor part: the first frequency-change feeding motor 103, the second frequency-change feeding motor 203, frequency conversion motors of metering pumps 24, mair motor 7, all adopt RHVC, can each speed regulation or synchronous variable-speed.
Mair motor 7 electric heating controls part, all adopts programmable logic controller (PLC) PLC to control, positive and negative 1 degree of design temperature error, maximum temperature 320 degree.
Above-mentioned filter 22, dosing pump 23, coat hanger die 25 all adopt PLC to control to carry out heated at constant temperature, positive and negative 1 degree of design temperature error, maximum temperature 320 degree.
Above-described embodiment is only used as explanation of the invention, and the technical scheme of all employing equivalent technologies means displacement gained, all within the hold in range of the claims in the present invention.
Claims (7)
1. fixed star screw rod curtain coating extruder, is characterized in that: include host driven installation, feeding part, feeding section, fixed star fluxing zone, fixed star vacuum zone, fixed star boost section, filter, dosing pump and the coat hanger die being sequentially connected with；
Described feeding section includes feeding barrel and feeding spiro rod；
Described fixed star fluxing zone includes fixed star plasticizing chamber, is positioned at the fixed star driving screw of fixed star plasticizing chamber central authorities, multiple fixed star small screws；Fixed star small screw is limited in the C-shaped channel of fixed star plasticizing chamber Smooth, is distributed in around fixed star driving screw, is meshed with the surface of fixed star driving screw；
Described permanent row vacuum zone includes vacuum cylinder and Duo Gen aerofluxus small screw；Aerofluxus small screw is limited in the C-shaped channel of vacuum cylinder Smooth, is intervally arranged extending around the fixed star driving screw come from fixed star fluxing zone, is meshed with the surface of fixed star driving screw；Vacuum cylinder is provided with vacuum chamber, and vacuum chamber is connected with vacuum-pumping equipment, vacuum feeding machine respectively, and vacuum feeding machine quantitatively adds adjuvant under vacuum conditions；
Described permanent row supercharging material section includes pressurization cylinder, is positioned at the supercharging driving screw of pressurization cylinder central authorities, many supercharging screw rods；Supercharging screw rod is limited in the C-shaped channel of pressurization cylinder Smooth, is distributed in around supercharging driving screw, is meshed with the surface of supercharging driving screw；
Described fixed star plasticizing chamber, vacuum cylinder, pressurization cylinder barrel in, and the inside of fixed star driving screw is equipped with spiral intake chute, it is connected with conductive fluid supply arrangement by pipeline, conductive fluid provides heat energy for above-mentioned parts, and to flowing through the melted required heat energy of material offer of fixed star fluxing zone, fixed star vacuum zone, fixed star boost section；
Host driven installation is sequentially connected with feeding spiro rod, fixed star driving screw and supercharging driving screw, drives it to rotate；Fixed star driving screw drives fixed star small screw, aerofluxus small screw to rotate；Supercharging driving screw drives supercharging screw rod to rotate；Material shear at high temperature in fixed star fluxing zone is squeezed into molten, moisture in material can be separated by Quick-gasifying, is completely exhausted out through fixed star vacuum material section, and material is after fixed star boost section supercharging, through filter, dosing pump, finally enter coat hanger die and discharge curtain coating slab.
2. fixed star screw rod curtain coating extruder according to claim 1, it is characterized in that: described feeding barrel, fixed star plasticizing chamber, vacuum cylinder and pressurization cylinder are fixedly connected successively, junction is respectively equipped with thrust ring, the axial force that carrying fixed star small screw, aerofluxus small screw, supercharging screw rod produce when rotated between two.
3. fixed star screw rod curtain coating extruder according to claim 1, is characterized in that: the internal helicoid intake chute of described fixed star driving screw is connected with conductive fluid swivel joint by pipeline, then is connected conductive fluid supply arrangement by swivel joint.
4. fixed star screw rod curtain coating extruder according to claim 1, is characterized in that: described host driven installation includes mair motor and main gear reducer, and mair motor is connected driving by main gear reducer with feeding spiro rod, and it rotates.
5. fixed star screw rod curtain coating extruder according to claim 1, is characterized in that: described feeding part includes the first hopper and the first feeding machine coupled with it, the second hopper and the second feeding machine coupled with it, Masterbatch machine and blanking set；First, second feeding machine and Masterbatch machine couple with blanking set respectively, and blanking set couples with feeding barrel；First, second hopper fills full recovered material and brand-new material respectively.
6. fixed star screw rod curtain coating extruder according to claim 4, is characterized in that: the quantity of described Masterbatch machine is at least one, and Masterbatch machine quantitatively adds adjuvant online.
7. fixed star screw rod curtain coating extruder according to claim 1, is characterized in that: described filter, dosing pump, and coat hanger die is respectively equipped with electric-heating constant temp. device, and adopts programmable logic controller (PLC) PLC to control to carry out heated at constant temperature.
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| CN201610314814.1A CN105773946A (en) | 2016-05-13 | 2016-05-13 | Fixed-star screw plastic extruder |
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| CN201610314814.1A CN105773946A (en) | 2016-05-13 | 2016-05-13 | Fixed-star screw plastic extruder |
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