CN106863744B - A single screw plasticizing extruder - Google Patents
A single screw plasticizing extruder Download PDFInfo
- Publication number
- CN106863744B CN106863744B CN201710146634.1A CN201710146634A CN106863744B CN 106863744 B CN106863744 B CN 106863744B CN 201710146634 A CN201710146634 A CN 201710146634A CN 106863744 B CN106863744 B CN 106863744B
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- Prior art keywords
- screw rod
- melt
- zone
- machine barrel
- single screw
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Classifications
-
- 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
- B29C48/505—Screws
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- 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
- B29C48/397—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 a single screw
-
- 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
- B29C48/505—Screws
- B29C48/59—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of processing of high molecular material molding equipments, disclose a kind of single screw rod plasticizing extruder, including shell, driving device, screw rod, machine barrel and heating-cooling device, machine barrel is arranged on shell, machine barrel is embedded to be cased with screw rod, screw rod includes sequentially connected solid conveying section, melt zone and melt conveying zone, the output end of driving device is connected with the outer end of solid conveying section, heating and cooling system is used to adjust the temperature of machine barrel, machine barrel is equipped with feed inlet on one end top for being located at solid conveying section, machine barrel is equipped with discharge port in the one end for being located at melt conveying zone, melt zone is equipped withShape spiral shell rib.The single screw rod plasticizing extruder increases melting length of the material on screw rod in single lead, improves material in the plasticizing efficiency of screw rod melt zone；Screw rod melt zone draw ratio is reduced, manufacturing cost is reduced；The single screw rod plasticizing extruder builds the advantages that pressure energy power is strong, and pressure peak appears in melt zone in screw rod, is conducive to the more stable extrusion of material.
Description
Technical field
The present invention relates to a kind of processing of high molecular material molding equipments, more particularly to a kind of single screw rod plasticizing extruder.
Background technique
The advantages that single screw rod extrusion molding is strong with pressure energy power is built, adaptable, and stability is good and widely used, Ji Hushi
Together in the processing of all high molecular materials.Screw Extrusion function melts a series of chemical industry base unit process, such as Solid Conveying and Melting
Melt, foam, being grafted, melt conveying and the physics such as pumping out and chemical process concentrates on carrying out on the screw rod in extruder.Solid-state
Plastic grain or powder compress on screw rod, fusion plastification, mixing and squeezing out to former are formed to obtain product or half make
Product.Studies have shown that the fusion plastification ability of screw rod directly affects the quality of extruded product, and plasticizing quality and yield are often lance
Shield.The fusion plastification efficiency of conventional single screw extruder is lower, can not be with Solid Conveying and Melting efficiency and melt conveying efficiency phase
Match, restricts the application range of single screw extrusion machine for a long time.
Summary of the invention
The object of the present invention is to provide a kind of simple single screw rod plasticizing extruders of structure, are deposited with solving the above-mentioned prior art
The problem of, improve single screw extrusion machine fusion plastification efficiency, reduce the manufacturing cost of extruder.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of single screw rod plasticizing extruder, including shell, driving device, screw rod, machine barrel and heating cooling
Device, on the housing, the machine barrel has been nested with the screw rod, and the screw rod includes sequentially connected for the machine barrel setting
Solid conveying section, melt zone and melt conveying zone, the output end of the driving device are connected with the outer end of the solid conveying section
It connects, the heating-cooling device is used to adjust the temperature of the machine barrel, and the machine barrel is in the one end for being located at the solid conveying section
Top is equipped with feed inlet, and the machine barrel is equipped with discharge port in the one end for being located at the melt conveying zone, and the melt zone is equipped with
Shape spiral shell rib.
Preferably, describedShape spiral shell rib includes several end to endShape seamed edge, it is describedShape spiral shell rib is along its hand of spiral
After expansion in the same plane: each describedShape seamed edge central symmetry, it is each describedThe line of two endpoints of shape seamed edge passes through each
It is describedThe symmetrical centre of shape seamed edge forms each describedThe center line of shape seamed edge, it is each describedThe center line of shape seamed edge is same
On straight line and it is interconnected to form describedThe spiral evolute of shape spiral shell rib, it is describedThe track of shape spiral shell rib expansion meets following letter
Number:
Y=asin (π bx)
Wherein, the direction of the spiral evolute is the direction of x-axis, and the direction perpendicular to the spiral evolute is y-axis
Direction, the value range of a are 0.1D~0.25D, and the value range of b is 2/D~5/D, and D is the nominal diameter of the screw rod, institute
The nominal diameter for stating solid conveying section, the melt zone and the melt conveying zone is D, the screw rod and the machine tube inner wall
Between be equipped with single side gap.
Preferably, the length ratio of the solid conveying section, the melt zone and the melt conveying zone are as follows: (20%~
60%): (20%~40%): (10%~50%).
Preferably, the melt zone is equipped withThe ratio of the spiro rod length of shape spiral shell rib and the melt zone total length is 0.4
~1.0.
Preferably, the melt zone be gradual change screw rod, the melt zone includes front-end and back-end, the front end with it is described solid
Body conveying section is connected, and the rear end is connected with the melt conveying zone；By the front end to the rear end, the spiral shell of the melt zone
Groove depth gradually becomes shallower as, and the spiral groove depth of the front end and the rear end is defeated with the solid conveying section and the melt respectively
The spiral groove depth of section is sent to match.
Preferably, the lead angle of the solid conveying section and the melt conveying zone is 17 ° of 42'.
Preferably, describedThe lead angle of the helix of shape spiral shell rib is more defeated than the solid conveying section and the melt
Send the lead angle of section it is 10 ° big~20 °.
Preferably, the heating-cooling device includes electric heater and air blower, and the electric heater is arranged in the machine
Cylinder is external, and the air blower is arranged in the machine barrel lower part.
Preferably, the single screw rod plasticizing extruder further includes control system, the control system respectively with the driving
Device, heating-cooling device communication connection, to control the revolving speed of the screw rod and the temperature of the machine barrel.
Preferably, the driving device includes motor, belt, the first belt pulley, the second belt pulley and retarder, the electricity
The output shaft of machine is connect with first belt pulley, and first belt pulley is connected by the belt and second belt pulley
It connects, the input axis connection of second belt pulley and the retarder, the output shaft of the retarder is connect with the screw rod.
The present invention achieves following technical effect compared with the existing technology:
The melt zone of single screw rod plasticizing extruder provided by the invention, screw rod usesShape spiral shell rib is squeezed compared to traditional single screw rod
Machine out, melting length of the material on screw rod in single lead increase, and improve material in the plasticizing efficiency of screw rod melt zone；This
The single screw rod plasticizing extruder of invention compares traditional single screw extrusion machine, and structure is simple, can reduce screw rod melt zone draw ratio, drops
The manufacturing cost of low extruder；New type single screw plasticizing extruder of the invention compares traditional single screw extrusion machine, builds pressure energy power
By force, pressure peak appears in melt zone in screw rod, is conducive to the more stable extrusion of material.
Further,Shape spiral shell rib includes severalShape seamed edge, compression fusion plastification process of the material in screw rod melt zone
In, due toThe barrier action of shape seamed edge will cause material and axially flow, and torsion mixing increases material in screw rod melt zone
Maximum shear rate, facilitate the mixing of material, further improve the plasticizing efficiency of material.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the assembling schematic diagram of single screw rod plasticizing extruder of the present invention；
Fig. 2 is the screw rod and machine barrel assembling schematic diagram of single screw rod plasticizing extruder of the present invention；
Fig. 3 is the screw rod melting section structure schematic diagram of single screw rod plasticizing extruder of the present invention；
Fig. 4 is expanded schematic diagram of the single screw rod plasticizing extruder screw rod melt zone of the present invention along the hand of spiral；
In figure: 1- shell, 2- screw rod, 21- solid conveying section, 22- melt zone, 221-Shape spiral shell rib, the expansion of 222- spiral
Line, 223-Shape runner, 23- melt conveying zone, 3- machine barrel, 31- feed inlet, 32- discharge port, 4- electric heater, 5- air blower,
61- motor, 62- belt, the first belt pulley of 63-, the second belt pulley of 64-, 7- control system.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of simple single screw rod plasticizing extruders of structure, are deposited with solving the above-mentioned prior art
The problem of, improve single screw extrusion machine fusion plastification efficiency, reduce the manufacturing cost of extruder.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
The present invention provides a kind of single screw rod plasticizing extruder, as shown in Figure 1, 2, including shell 1, driving device, screw rod 2,
Machine barrel 3 and heating-cooling device, machine barrel 3 are arranged on shell 1, and machine barrel 3 is embedded to be cased with screw rod 2, and screw rod 2 includes sequentially connected
The output end of solid conveying section 21, melt zone 22 and melt conveying zone 23, driving device is connected with the outer end of solid conveying section 21
It connects, heating-cooling device is used to adjust the temperature of machine barrel 3, and machine barrel 3 is equipped with charging on one end top for being located at solid conveying section 21
Mouth 31, machine barrel 3 are equipped with discharge port 32 in the one end for being located at melt conveying zone 23, spiral shell rib are equipped on 2 outer wall of screw rod, in melt zone
The spiral shell rib that 22 outer walls are equipped with isShape spiral shell rib 221.
The melt zone 22 of single screw rod plasticizing extruder provided by the invention, screw rod 2 usesShape spiral shell rib 221 utilizesShape spiral shell
Rib 221 is formed in screw rod 2Shape runner 223 improves melting length, and shorter screw rod melting length can achieve identical
Plasticizing effect compares conventional single screw, can reduce 22 proportion of melt zone, and then reduce the entire length of screw rod 2,
Reduce draw ratio；Compared to traditional single screw extrusion machine, melting length of the material on screw rod 2 in single lead increases, and improves
Plasticizing efficiency of the material in 2 melt zone of screw rod, the reduction of 2 length of screw rod greatly reduce 2 processing cost of screw rod and extruder
Manufacturing cost.Due toThe barrier action of shape spiral shell rib 221, will cause material and flows axially along a screw, turn round with the material that spiral shell rib promotes
Turn mixing, increase shear action of the material in 2 melt zone 22 of screw rod and maximum shear rate, facilitate the mixing of material,
Improve the plasticizing efficiency of material；Compared to traditional single screw extrusion machine, build that pressure energy power is strong, and pressure peak appears in molten in screw rod 2
Melt section 22, is conducive to the more stable extrusion of material.
Single screw rod plasticizing extruder provided by the invention, structure is simple, can reduce screw rod melt zone draw ratio, reduces single spiral shell
The manufacturing cost of bar plasticizing extruder.
As a preferred embodiment, as shown in Figure 3,4, it is of the inventionShape spiral shell rib 221 includes several joins end to end
'sShape seamed edge,Shape spiral shell rib is unfolded rear in the same plane along its hand of spiral: eachShape seamed edge central symmetry, respectivelyShape seamed edge
Two endpoints line pass through it is eachThe symmetrical centre of shape seamed edge is formed respectivelyThe center line of shape seamed edge, respectivelyThe center of shape seamed edge
Line on the same line and is interconnected to formThe spiral evolute 222 of shape spiral shell rib,The track that shape spiral shell rib 221 is unfolded meets
With minor function:
Y=asin (π bx)
Wherein, the direction of spiral evolute 222 is the direction of x-axis, and the direction perpendicular to spiral evolute 222 is y-axis side
To the value range of a is 0.1D~0.25D, and the value range of b is 2/D~5/D, and D is the nominal diameter of screw rod 2, and solid is defeated
The nominal diameter for sending section 21, melt zone 22 and melt conveying zone 23 is D, on 3 inner wall of machine barrel and screw rod 2221 He of shape spiral shell rib
0.5mm single side gap is equipped between common spiral shell rib, i.e., at the top of the spiral shell rib of screw rod 2 and the gap of 3 inner wall of machine barrel is 0.5mm.
As a preferred embodiment, melt zone of the invention is equipped withThe spiro rod length and melt zone of shape spiral shell rib
The ratio of total length is 0.4~1.0.
According to different conveying materials, the length of solid conveying section 21 of the invention, melt zone 22 and melt conveying zone 23
The ratio between can are as follows: (20%~60%): (20%~40%): (10%~50%).
As a preferred embodiment, melt zone 22 of the invention be gradual change screw rod, melt zone 22 include front end and
Rear end, front end are connected with solid conveying section 21, and rear end is connected with melt conveying zone 23；By front end to rear end, the spiral shell of melt zone 22
Groove depth gradually becomes shallower as, and the spiral groove depth of front-end and back-end is deep with the screw channel of solid conveying section 21 and melt conveying zone 23 respectively
Degree matches.
As a preferred embodiment, the lead angle of solid conveying section and melt conveying zone of the invention is 17 °
42',The lead angle of the helix of shape spiral shell rib is 10 °~20 ° bigger than the lead angle of solid conveying section and melt conveying zone.
As a preferred embodiment, heating-cooling device of the invention includes electric heater 4 and air blower 5, electricity
Heater 4 is arranged outside machine barrel 3, and air blower 5 is arranged in 3 lower part of machine barrel.Utilize the electric heater 4 being attached to outside machine barrel 3
Machine barrel 3 can be heated, by the air blower 5 of 3 lower part of machine barrel can forced air it is cooling to cool down to machine barrel 3.
Heating-cooling device can adjust and maintain the temperature of machine barrel 3, be to carry out heat biography by heat transfer between machine barrel 3 and screw rod 2
It passs, to realize the adjusting to 2 temperature of screw rod.
Driving device includes motor 61, belt 62, the first belt pulley 63, the second belt pulley 64 and retarder, motor it is defeated
Shaft is connect with the first belt pulley 63, and the first belt pulley 63 is connect by belt 62 with the second belt pulley 64, the second belt pulley 64
It is connect with the output shaft of the input axis connection of retarder, retarder with screw rod 2.
Single screw rod plasticizing extruder further includes control system 7, control system 7 respectively with driving device, heating-cooling device
Communication connection, to control the revolving speed of screw rod 2 and the temperature of machine barrel 3 respectively.Control system 7 is added by PID/feedback control electricity
Hot device 4 and air blower 5 realize that temperature is stablized, and pass through control 61 rotational speed regulation screw rod of motor, 2 revolving speed.
It is illustrated below with structure setting of the different embodiments to single screw rod plasticizing extruder of the invention:
Embodiment one
Single screw rod plasticizing extruder provided in this embodiment,Shape spiral shell rib 221 is deployed in conplane along its hand of spiral
Track meets with minor function:
Y=asin (π bx)
Wherein, the direction of spiral evolute 222 is the direction of x-axis, and the direction perpendicular to spiral evolute 222 is y-axis side
To a 0.1D, b 5/D, D are the nominal diameter of screw rod 2, and the nominal diameter D of the present embodiment screw rod is 65mm.
The spiral groove depth of solid conveying section 21 is 6.5mm, and 23 spiral groove depth of melt conveying zone is 3mm, solid conveying section 21
Lead angle with melt conveying zone 23 is 17 ° of 42'；The screw channel groove depth of melt zone 22 is by the 6.5mm of its front end along 2 axis of screw rod
To the 3mm for being gradually decrease to its rear end, melt zoneThe lead angle θ of the spiral evolute 222 of shape spiral shell rib 221 is 27 ° of 42'；Spiral shell
2 revolving speed of bar is 30r/min, driving power 20kW；It processes raw material as polypropylene, 3 temperature of machine barrel positioned at melt zone 22 is set as
180℃。
The present embodiment melt zone is equipped withThe ratio of the 22 screw rod total length of spiro rod length and melt zone of shape spiral shell rib 221 is
1.0,2 length of screw rod is 975mm in the present embodiment, and the length of solid conveying section 21, melt zone 22 and melt conveying zone 23 is distinguished
For 390mm, 195mm and 390mm, the length ratio of solid conveying section 21, melt zone 22 and melt conveying zone 23 are as follows: 40%:
20%:40%.
By the single screw rod plasticizing extruder of the design of Structural Parameters of the present embodiment, fusion plastification works well.Traditional list
The screw slenderness ratio of spiro rod plasticizing extruder will be 25 or so, and the single screw rod plasticizing extruder draw ratio of the present embodiment is 15,
About 10 are reduced compared to traditional single screw extrusion machine draw ratio.
Embodiment two
Single screw rod plasticizing extruder in the present embodiment, compared to the difference of single screw rod plasticizing extruder in embodiment one
Be in,Shape spiral shell rib 221 is deployed in conplane track along its hand of spiral and meets with minor function:
Y=asin (π bx)
Wherein, the direction of spiral evolute 222 is the direction of x-axis, and the direction perpendicular to spiral evolute 222 is y-axis side
To a 0.15D, b 3/D, D are the nominal diameter of screw rod 2, and the nominal diameter D of the present embodiment screw rod is 90mm.
21 spiral groove depth of solid conveying section is 9mm, and 23 spiral groove depth of melt conveying zone is 4mm, solid conveying section 21 and molten
The lead angle of body conveying section 23 is 17 ° of 42'；22 screw channel groove depth of melt zone is axially gradually subtracted by the 9mm of its front end along screw rod 2
The as low as 4mm of its rear end, melt zone 22The lead angle θ of the spiral evolute 222 of shape spiral shell rib 221 is 32 ° of 42'；2 turns of screw rod
Speed is 30r/min, driving power 20kW；It processes raw material as polypropylene, 3 temperature of machine barrel positioned at melt zone 22 is set as 180
℃。
The present embodiment melt zone is equipped withThe ratio of the 22 screw rod total length of spiro rod length and melt zone of shape spiral shell rib 221 is
0.6,2 length of screw rod is 1620mm, the length point of solid conveying section 21, melt zone 22 and melt conveying zone 23 in the present embodiment
Not Wei 648mm, 486mm and 486mm, the length ratio of solid conveying section 21, melt zone 22 and melt conveying zone 23 are as follows: 40%:
30%:30%.The present embodiment others structure setting is the same as example 1.
By the single screw rod plasticizing extruder of the design of Structural Parameters of the present embodiment, fusion plastification works well.Traditional list
The screw slenderness ratio of spiro rod plasticizing extruder will be 25 or so, and the single screw rod plasticizing extruder draw ratio of the present embodiment is 18,
About 7 are reduced compared to traditional single screw extrusion machine draw ratio.
Embodiment three
Single screw rod plasticizing extruder in the present embodiment, compared to the difference of single screw rod plasticizing extruder in embodiment one
Be in,Shape spiral shell rib 221 is deployed in conplane track along its hand of spiral and meets with minor function:
Y=asin (π bx)
Wherein, the direction of spiral evolute 222 is the direction of x-axis, and the direction perpendicular to spiral evolute 222 is y-axis side
To a 0.25D, b 2/D, D are the nominal diameter of screw rod 2, and the nominal diameter D of the present embodiment screw rod is 70mm.
21 spiral groove depth of solid conveying section is 7mm, and 23 spiral groove depth of melt conveying zone is 3.5mm, 21 He of solid conveying section
The lead angle of melt conveying zone 23 is 17 ° of 42'；22 screw channel groove depth of melt zone is axial gradually along screw rod 2 by the 7mm of its front end
It is decreased to the 3.5mm of its rear end, melt zone 22The lead angle θ of the spiral evolute of shape spiral shell rib 221 is 37 ° of 42'；Screw rod 2
Revolving speed is 30r/min, driving power 20kW；It processes raw material as polypropylene, melt zone barrel temperature is 180 DEG C.
The present embodiment melt zone is equipped withThe ratio of the 22 screw rod total length of spiro rod length and melt zone of shape spiral shell rib 221 is
0.4,2 length of screw rod is 1400mm, the length point of solid conveying section 21, melt zone 22 and melt conveying zone 23 in the present embodiment
Not Wei 560mm, 560mm and 280mm, the length ratio of solid conveying section 21, melt zone 22 and melt conveying zone 23 are as follows: 40%:
40%:20%.The present embodiment others structure setting is the same as example 1.
By the single screw rod plasticizing extruder of the design of Structural Parameters of the present embodiment, fusion plastification works well.Traditional list
The screw slenderness ratio of spiro rod plasticizing extruder will be 25 or so, and the single screw rod plasticizing extruder draw ratio of the present embodiment is 20,
About 5 are reduced compared to traditional single screw extrusion machine draw ratio.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (8)
1. a kind of single screw rod plasticizing extruder, it is characterised in that: including shell, driving device, screw rod, machine barrel and the cooling dress of heating
It sets, on the housing, the machine barrel has been nested with the screw rod, and the screw rod includes sequentially connected solid for the machine barrel setting
Body conveying section, melt zone and melt conveying zone, the output end of the driving device are connected with the outer end of the solid conveying section,
The heating-cooling device is used to adjust the temperature of the machine barrel, and the machine barrel is on one end top for being located at the solid conveying section
Equipped with feed inlet, the machine barrel is equipped with discharge port in the one end for being located at the melt conveying zone, and the melt zone is equipped withShape spiral shell
Rib；
It is describedShape spiral shell rib includes several end to endShape seamed edge, it is describedShape spiral shell rib is deployed in same flat along its hand of spiral
After on face: each describedShape seamed edge central symmetry, it is each describedThe line of two endpoints of shape seamed edge passes through each describedShape seamed edge
Symmetrical centre formed it is each describedThe center line of shape seamed edge, it is each describedThe center line of shape seamed edge is on the same line and mutually
Described in connection is formedThe spiral evolute of shape spiral shell rib, it is describedThe track of shape spiral shell rib expansion meets with minor function:
Y=asin (π bx)
Wherein, the direction of the spiral evolute is the direction of x-axis, and the direction perpendicular to the spiral evolute is y-axis direction,
The value range of a is 0.1D~0.25D, and the value range of b is 2/D~5/D, and D is the nominal diameter of the screw rod, the solid
The nominal diameter of conveying section, the melt zone and the melt conveying zone is D, is set between the screw rod and the machine tube inner wall
There is single side gap；
It is describedSpiral shell of the lead angle of the spiral evolute of shape spiral shell rib than the solid conveying section and the melt conveying zone
Line lift angle is 10 ° big~and 20 °.
2. single screw rod plasticizing extruder according to claim 1, it is characterised in that: the solid conveying section, the melting
The length ratio of section and the melt conveying zone are as follows: (20%~60%): (20%~40%): (10%~50%).
3. single screw rod plasticizing extruder according to claim 1, it is characterised in that: the melt zone is equipped withShape spiral shell rib
Spiro rod length and the melt zone total length ratio be 0.4~1.0.
4. single screw rod plasticizing extruder according to claim 1, it is characterised in that: the melt zone is gradual change screw rod, institute
Stating melt zone includes front-end and back-end, and the front end is connected with the solid conveying section, the rear end and the melt conveying zone
It is connected；By the front end to the rear end, the spiral groove depth of the melt zone is gradually become shallower as, and the front end and the rear end
Spiral groove depth of the spiral groove depth respectively with the solid conveying section and the melt conveying zone matches.
5. single screw rod plasticizing extruder according to claim 1, it is characterised in that: the solid conveying section and the melt
The lead angle of conveying section is 17 ° of 42'.
6. single screw rod plasticizing extruder according to claim 1, it is characterised in that: the heating-cooling device includes that electricity adds
Hot device and air blower, the electric heater are arranged outside the machine barrel, and the air blower is arranged in the machine barrel lower part.
7. single screw rod plasticizing extruder according to claim 1, it is characterised in that: the single screw rod plasticizing extruder also wraps
Control system is included, the control system is communicated to connect with the driving device, the heating-cooling device respectively, described in control
The temperature of the revolving speed of screw rod and the machine barrel.
8. single screw rod plasticizing extruder according to claim 1, it is characterised in that: the driving device includes motor, skin
Band, the first belt pulley, the second belt pulley and retarder, the output shaft of the motor are connect with first belt pulley, and described
One belt pulley is connect by the belt with second belt pulley, and the input shaft of second belt pulley and the retarder connects
It connects, the output shaft of the retarder is connect with the screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710146634.1A CN106863744B (en) | 2017-03-13 | 2017-03-13 | A single screw plasticizing extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710146634.1A CN106863744B (en) | 2017-03-13 | 2017-03-13 | A single screw plasticizing extruder |
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| Publication Number | Publication Date |
|---|---|
| CN106863744A CN106863744A (en) | 2017-06-20 |
| CN106863744B true CN106863744B (en) | 2019-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710146634.1A Expired - Fee Related CN106863744B (en) | 2017-03-13 | 2017-03-13 | A single screw plasticizing extruder |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753793A (en) * | 2014-01-08 | 2014-04-30 | 北京化工大学 | Polymer melt calculus heat transfer enhancement and mixing plasticization extruder |
| CN204505770U (en) * | 2014-12-11 | 2015-07-29 | 四川省三台智光科技有限公司 | A kind of extruder of singe screw |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5829734B2 (en) * | 1977-11-26 | 1983-06-24 | 三菱重工業株式会社 | bent extruder |
| JPS5695662A (en) * | 1979-12-29 | 1981-08-03 | Matsushita Electric Works Ltd | Construction of screw for extrusion molding machine |
| US8998481B2 (en) * | 2012-08-16 | 2015-04-07 | Hans Weber Maschinenfabrik Gmbh | Double screw extruder |
-
2017
- 2017-03-13 CN CN201710146634.1A patent/CN106863744B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753793A (en) * | 2014-01-08 | 2014-04-30 | 北京化工大学 | Polymer melt calculus heat transfer enhancement and mixing plasticization extruder |
| CN204505770U (en) * | 2014-12-11 | 2015-07-29 | 四川省三台智光科技有限公司 | A kind of extruder of singe screw |
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| Publication number | Publication date |
|---|---|
| CN106863744A (en) | 2017-06-20 |
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