CN105881864A - Plunger-push-type single screw extruder - Google Patents
Plunger-push-type single screw extruder Download PDFInfo
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- CN105881864A CN105881864A CN201410578868.XA CN201410578868A CN105881864A CN 105881864 A CN105881864 A CN 105881864A CN 201410578868 A CN201410578868 A CN 201410578868A CN 105881864 A CN105881864 A CN 105881864A
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- machine barrel
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- screw rod
- zone
- plunger
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a plunger-push-type single screw extruder including: a plunger transmission apparatus (1), a solid conveying part machine cylinder (3), a fusion part machine cylinder (6), a melt conveying part machine cylinder (10), a fusion part machine cylinder transmission apparatus (7), a melt conveying part machine cylinder transmission apparatus (11), a screw rod (12) and a plunger (2). The plunger (2) is moved in a reciprocating linear manner in a solid conveying part machine cylinder inner flow path (4) to press a material which is then fed into a fusion part of the extruder through the solid conveying part machine cylinder inner flow path (4). The fusion part machine cylinder (6) can melt the material. The melt conveying part machine cylinder (10) is then rotated to convey the material forwardly, thereby extruding and shaping the molten material. Through adjustment on the reciprocating movement frequency and travel distance of the plunger (2), rotational speed of the fusion part machine cylinder (6), and rotational speed of the melt conveying part machine cylinder (10), solid conveying efficiency, melting efficiency and melt conveying efficiency can be cooperated uniformly.
Description
Technical field
The present invention is a kind of post pushing-type single screw extrusion machine, can be mixed by coupling Solid Conveying and Melting efficiency, melting efficiency, melt
Close transfer efficiency, it is achieved the high-speed and high-efficiency extrusion molding of the plastics such as tubing, sheet material, profile shapes.
Background technology
Extrusion molding is made by the squeezing action of screw rod or plunger, makes the material of melted by heat be forced through forming hole or die head
And become a kind of processing method of the continuous goods with particular cross section.Plunger extrusion molding be mainly used in requirement tonnage high or
The technique that should not use Screw Extrusion.Plunger extrusion molding has certain intermittence, and screw extrusion molding can produce continuously.
Inside screw extruder barrel, offer spiral grooves raising Solid Conveying and Melting efficiency in recent years thus improve single screw extrusion machine yield
Report of common occurrence, for unmatched problem between groove machine barrel single screw extrusion machine high solid conveying capacity and low melt efficiency,
Also patent is had to propose relevant solution.Chinese invention patent " a kind of groove barrel extruder based on radial melting "
(application number: 20120035013.3) and Chinese invention patent " a kind of groove barrel extruder " (application number:
20131026134.4) all composition groove machine barrel single screw extrusion machine raising melting efficiency is provided practicable solution to do
Method.But the basis that the melting efficiency that the two patent is higher realizes is the material of extruder solid conveying section conveying is integrated solid
Plug, this utilizes the combination of screw rod and machine barrel relatively difficult to achieve in actual production process.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of post pushing-type single screw extrusion machine, effectively solve
Solid Conveying and Melting efficiency that screw extruder exists, melting efficiency, melt mixed transfer efficiency unmatched problem, also solve
The problem of material entirety conveying.
To achieve these goals, this invention takes following technical scheme:
A kind of post pushing-type single screw extrusion machine, including ram drive 1, solid conveying section machine barrel 3, melt zone machine barrel 6, melt
Transportation section machine barrel 10, melt zone machine barrel actuating device 7, melt conveying zone machine barrel actuating device 11, screw rod 12 and plunger 2.
Plunger 2 is positioned at solid conveying section machine barrel runner 4, and screw rod 12 is connected with solid conveying section machine barrel 3, solid conveying section machine barrel
3, melt zone machine barrel 6 is connected according to this with melt conveying zone machine barrel 10, and moving component is plunger 2, melt zone machine barrel 6 and melt
Transportation section machine barrel 10, stationary parts is solid conveying section machine barrel 3 and screw rod 12.It is characterized in that, solid conveying section machine barrel stream
The linear reciprocating motion of road 4 inner plunger 2 realizes the compacting of material and enters extruder melt zone along solid conveying section inner flow passage 4,
Rotating melt zone machine barrel 6 melting material, rotary melt transportation section machine barrel 10 can realize being fed forward of material, fused materials
And extrusion molding, by reciprocating frequency and stroke, melt zone machine barrel 6 rotating speed, the melt conveying zone machine barrel of pilot plunger 4
10 rotating speeds can realize Solid Conveying and Melting efficiency, melting efficiency, the coordinating and unifying of melt transfer efficiency.
A kind of post pushing-type single screw extrusion machine described above, it is characterised in that solid conveying section machine barrel runner 4 is smooth
Runner without dead angle, it is identical that runner quantity initiates position screw rod head number with screw rod 12 screw channel, solid conveying section machine barrel runner 4 end
It is identical that shape initiates position cross sectional shape with extruder melt zone, and solid conveying section machine barrel runner 4 cross section geometric compression ratio is material
The 60%-140% of physical compression ratio.
A kind of post pushing-type single screw extrusion machine described above, it is characterised in that melt zone machine barrel 6 inwall offers groove,
Ditch trough number is 6-20, and groove normal direction groove width is the most constant, and ditch groove deep keeps not in the 1-5 times of nominal diameter length started
Become, be progressively smaller until disappearance afterwards.
A kind of post pushing-type single screw extrusion machine described above, it is characterised in that melt conveying zone machine barrel 10 is smooth barrel
Or the one in pin barrel.
A kind of post pushing-type single screw extrusion machine described above, it is characterised in that screw rod 12 melt zone be equivalent gullet depth screw rod and
The combining form of separating screw rod；Equivalent gullet depth spiro rod length is equal with equivalent gullet depth trench length in melt zone machine barrel；Separating screw rod
Screw channel overall volume be gradually increased, wherein solid phase screw channel volume is gradually reduced axially along a screw, and liquid phase screw channel volume is along spiral shell
Bar is axially gradually increased；Screw rod 12 melt conveying zone increases mixing elements, for improving the uniform of material conveying.
One post pushing-type single screw extrusion machine of the present invention compared with prior art, the invention have the advantages that
1, the conveying of solid conveying section material uses plunger type material to push, it is possible to achieve the entirety of material is fed forward, and material is entering
Melt zone initiating terminal is a closely knit entirety when starting melted；
2, melt zone machine barrel and melt conveying zone machine barrel can realize the proportioning of friction speed, regulate melting efficiency and melt transfer efficiency,
Thus realize Solid Conveying and Melting efficiency, melting efficiency, the coupling of melt transfer efficiency；
3, material can realize overall conveying at the extruder melt zone initial stage, afterwards through machine barrel groove structure and the change of screw channel structure
Change that to realize material fracture melted, solve the conveying of material entirety with melt docks problem.
Accompanying drawing explanation
Fig. 1: a kind of post pushing-type single screw extrusion machine schematic diagram
Fig. 2: a kind of post pushing-type single screw extrusion machine solid conveying section runner schematic diagram
Wherein: 1-ram drive, 2-plunger, 3-solid conveying section machine barrel, 4-solid conveying section machine barrel runner, 5-bearing, 6-melts
The section of melting machine barrel, 7-melt zone actuating device, 8-non-contact thermal device, 9-sealing ring, 10-melt conveying zone machine barrel, 11-melts
Body transportation section actuating device, 12-screw rod, 13-machine barrel fixed support.
Detailed description of the invention
Below in conjunction with Figure of description, the specific embodiment of the present invention is illustrated.
Embodiment
Nominal diameter D=90mm, draw ratio is the post pushing-type single screw extrusion machine of 30.The a length of 8D of solid conveying section, wherein plunger
A diameter of 20mm, a length of 100mm, stroke is 90mm；Melt zone machine barrel draw ratio is 15D, offers machine barrel groove,
In the 5D started, machine barrel ditch groove deep is 4mm, and groove width is 8mm, and head number is 10, machine barrel ditch in remaining 10D
Groove deep is gradually decrease to 0, and groove width is constant, and ditch trough number is constant；Melt conveying zone machine barrel is pin barrel, a length of
7D.Screw rod is separating screw rod, and helical pitch is 90mm, screw flight head number 2, and spiral shell rib method phase width is 8.0mm；Melt zone
Spiro rod length is 15D, and in the 5D started, screw channel groove depth is 6mm, in remaining 10D length inner screw screw channel groove depth
3mm it is gradually decrease to axially along a screw by 6mm；Melt zone screw rod groove depth is 3mm, a length of 7D.Piston reciprocation moves
Frequency is 120Hz, and driving power is 5kW；Groove melt zone machine barrel rotating speed is 60r/min, and driving power is 25kw, melt
Transportation section machine barrel rotating speed is 55r/min, and driving power is 20kw.Process raw material as the high density polyethylene (HDPE) (trade mark: Yanshan Petrochemical
5000S).Solid conveying section air cools down, and melt zone barrel temperatures set is 175 DEG C, and melt conveying zone barrel zone temperature is set to
165 DEG C, head temperature is 160 DEG C.
Maximum output with the single screw extrusion machine of design of Structural Parameters is 260kg/h in this way, and name specific power is
0.1923kW/ (kg/h), specific discharge is 4.72 (kg/h)/rpm, and melt temperature is 176 DEG C, and fusion plastification is respond well.
The present invention can summarize with other the concrete form without prejudice to the spirit or essential characteristics of the present invention.Therefore, no matter from
From the point of view of which point, the embodiment above of the present invention all can only be considered the description of the invention and can not limit the present invention, right
Claim indicates the scope of the present invention, therefore, suitable with claims of the present invention containing and scope in any change
Become, be all considered as being included within the scope of the claims.
Claims (5)
1. a post pushing-type single screw extrusion machine, including ram drive (1), solid conveying section machine barrel (3), melt zone
Machine barrel (6), melt conveying zone machine barrel (10), melt zone machine barrel actuating device (7), melt conveying zone machine barrel transmission dress
Put (11), screw rod (12) and plunger (2).Plunger (2) is positioned at solid conveying section machine barrel runner (4), screw rod
(12) being connected with solid conveying section machine barrel (3), solid conveying section machine barrel (3), melt zone machine barrel (6) and melt are defeated
The section of sending machine barrel (10) is connected according to this, and moving component is plunger (2), melt zone machine barrel (6) and melt conveying zone machine barrel
(10), stationary parts is solid conveying section machine barrel (3) and screw rod (12).It is characterized in that, solid conveying section machine barrel
The linear reciprocating motion of runner (4) inner plunger (2) realizes the compacting of material and enters along solid conveying section inner flow passage (4)
Entering extruder melt zone, rotate melt zone machine barrel (6) melting material, rotary melt transportation section machine barrel (10) can be real
Being fed forward of existing material, fused materials extrusion molding, by reciprocating frequency and the row of pilot plunger (2)
Journey, melt zone machine barrel (6) rotating speed, melt conveying zone machine barrel (10) rotating speed can realize Solid Conveying and Melting efficiency, melted effect
Rate, the coordinating and unifying of melt transfer efficiency.
A kind of post pushing-type single screw extrusion machine the most according to claim 1, it is characterised in that solid conveying section machine barrel stream
Road (4) is smooth runner without dead angle, and it is identical that runner quantity initiates position screw rod head number with screw rod (12) screw channel, solid
It is identical that transportation section machine barrel runner (4) terminal end shape initiates position cross sectional shape with extruder melt zone, solid conveying section machine
Cylinder runner (4) cross section geometric compression ratio is the 60%-140% of material physical compression ratio.
A kind of post pushing-type single screw extrusion machine the most according to claim 1, it is characterised in that in melt zone machine barrel (6)
Groove offered by wall, and ditch trough number is 6-20, and groove normal direction groove width is the most constant, and ditch groove deep is in the 1-5 times of nominal started
Keep constant in diameter length, be progressively smaller until disappearance afterwards.
A kind of post pushing-type single screw extrusion machine the most according to claim 1, it is characterised in that melt conveying zone machine barrel
(10) it is the one in smooth barrel or pin barrel.
A kind of post pushing-type single screw extrusion machine the most according to claim 1, it is characterised in that screw rod (12) melt zone
For equivalent gullet depth screw rod and the combining form of separating screw rod；The length of equivalent gullet depth screw rod and equivalent gullet depth groove in melt zone machine barrel
Length is equal；The screw channel overall volume of separating screw rod is gradually increased, wherein solid phase screw channel volume axially along a screw by
The least, liquid phase screw channel volume is gradually increased axially along a screw；Screw rod (12) melt conveying zone increases mixing elements, uses
In the uniformity improving material conveying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410578868.XA CN105881864A (en) | 2014-10-27 | 2014-10-27 | Plunger-push-type single screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410578868.XA CN105881864A (en) | 2014-10-27 | 2014-10-27 | Plunger-push-type single screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105881864A true CN105881864A (en) | 2016-08-24 |
Family
ID=57000464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410578868.XA Pending CN105881864A (en) | 2014-10-27 | 2014-10-27 | Plunger-push-type single screw extruder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676652A (en) * | 2016-11-17 | 2017-05-17 | 福建师范大学 | Internal-mixing-plunger melting-extrusion-method electrostatic spinning device |
| CN108908898A (en) * | 2018-06-27 | 2018-11-30 | 湖南工业大学 | A kind of Punching Plunger Extruder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62261417A (en) * | 1986-05-08 | 1987-11-13 | Toshiba Mach Co Ltd | Injection device for injection molder |
| CN104015334A (en) * | 2014-06-11 | 2014-09-03 | 新疆工程学院 | Efficient plasticizing single-screw extruder |
-
2014
- 2014-10-27 CN CN201410578868.XA patent/CN105881864A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62261417A (en) * | 1986-05-08 | 1987-11-13 | Toshiba Mach Co Ltd | Injection device for injection molder |
| CN104015334A (en) * | 2014-06-11 | 2014-09-03 | 新疆工程学院 | Efficient plasticizing single-screw extruder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676652A (en) * | 2016-11-17 | 2017-05-17 | 福建师范大学 | Internal-mixing-plunger melting-extrusion-method electrostatic spinning device |
| CN108908898A (en) * | 2018-06-27 | 2018-11-30 | 湖南工业大学 | A kind of Punching Plunger Extruder |
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Application publication date: 20160824 |