CN103978621A - Four-motor physical foaming co-extrusion device - Google Patents
Four-motor physical foaming co-extrusion device Download PDFInfo
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- CN103978621A CN103978621A CN201410219852.XA CN201410219852A CN103978621A CN 103978621 A CN103978621 A CN 103978621A CN 201410219852 A CN201410219852 A CN 201410219852A CN 103978621 A CN103978621 A CN 103978621A
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Abstract
The invention relates to a physical foaming extrusion device and particularly relates to a four-motor physical foaming co-extrusion device. The four-motor physical foaming co-extrusion device comprises four motors, extrusion machines driven by the four motors, an extrusion machine joint and three layers of co-extrusion machine heads, wherein a polyethylene foaming extrusion machine, a polyethylene transferring extrusion machine, an outer-layer extrusion machine and an inner-layer extrusion machine can form a three-layer structure including an inner layer, a foaming layer and an outer layer once by a layer-separated extrusion technology, the three layers are mixed to form a whole body, the extrusion is insulated and uniform, and the OD (Outer Diameter) and the concentricity of extruded wires are stable.
Description
Technical field
The present invention relates to physical blowing extrusion device, be specifically related to a kind of four machine co-extrusion physic foaming extrusion devices.
Background technology
Conventional physical foaming technique adopts internal layer, foaming layer, outer this layering extrusion pattern mostly at present, and layering extrusion meeting makes insulation thickness wayward like this, can cause insulation thickness inhomogeneous, makes wire rod extrusion 0D, concentricity, foam degrees etc. unstable.Because thin skin physical blowing product foam degrees is high, promote foam degrees stability need increase screw slenderness ratio (screw rod working portion length L is called draw ratio with the ratio of screw diameter Ds), domestic at present
the maximum draw ratio of 20mm screw rod only has 40, and calculates and only have draw ratio to reach more than 70 just to make foam degrees to reach 70% and can also stablize extrusion according to theory.On the other hand, it is long again that draw ratio reaches the more than 70 little length of single screw diameter, depends a motor power source alone powerful power cannot be provided, and the easily broken and plastics of screw rod cannot plastify fully in spiral shell cylinder, cannot ensure the stability of foam degrees, cause efficiency low.
L/Ds value is large, and Temperature Distribution is rationally conducive to mixing and the plasticizing of plastics, and the time that now plastics are heated in machine barrel is also longer, and the plasticizing of plastics will be fully, more even.Thereby improve machine polymer amount.If required under constant prerequisite at plasticizing quality, after draw ratio increases, the rotating speed of screw rod can improve, thereby has increased the extrusion capacity of plastics.But, select excessive draw ratio, the power that screw rod consumes is by corresponding increase, and the processing of screw rod and machine barrel and assembly difficulty increase; The possibility of bent screws also can increase, and will cause the scraped finish of screw rod and machine tube inner wall, reduces service life.In addition, for thermal sensitivity plastics, excessive draw ratio, because of long thermal decomposition of the time of staying, affects the plasticizing of plastics and extrudes quality.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of can be simple in structure, machine polymer amount is high and can be by the disposable internal layer that completes of interlayer extruding technology, foaming layer, outer three-decker, makes three layers of four machine co-extrusion physic foaming extrusion device of lumping together.
For addressing the above problem, the technical solution used in the present invention is:
A kind of four machine co-extrusion physic foaming extrusion devices, comprise polyethylene foam extruder motor, polyethylene transmits extruder motor, outer extruder motor, internal layer extruder motor, polyethylene foam extruder, polyethylene transmits extruder, outer extruder, internal layer extruder, extruder adapter and three-layer co-extruding machine head, described polyethylene foam extruder motor is connected with polyethylene foam extruder, be used for driving polyethylene foam extruder, described polyethylene foam extruder transmits extruder by extruder adapter and polyethylene and is connected, described polyethylene transmits extruder motor and is connected with polyethylene transmission extruder, be used for driving polyethylene to transmit extruder, described polyethylene transmits extruder and is connected with three-layer co-extruding machine head, described outer extruder motor is connected with outer extruder, and described outer extruder is connected with three-layer co-extruding machine head, described internal layer extruder motor is connected with internal layer extruder, and described internal layer extruder is connected with three-layer co-extruding machine head.
Further, described polyethylene foam extruder becomes L-type setting with the relative position that polyethylene transmits extruder, and polyethylene foam extrusion is horizontally disposed with, and polyethylene transmits extruder and vertically arranges.
Further, described polyethylene foam extruder motor, polyethylene transmit on extruder motor, outer extruder motor and internal layer extruder motor and are provided with the frequency converter for governor motor frequency.
The beneficial effect that adopts technique scheme to produce is:
In the present invention, polyethylene foam extruder, polyethylene transmit extruder, outer extruder and internal layer extruder and can disposablely complete internal layer, foaming layer by interlayer extruding technology, outer three-decker, makes three layers to lump together, and extrusion insulation evenly, make wire rod extrusion OD, concentricity is stable.
Polyethylene foam extruder transmits extruder with polyethylene and becomes L-type setting, adopt polyethylene to transmit the split-type structural that screw rod adds polyethylene foam screw rod, increase respectively screw conveyer power and plasticizing capacity by two screw rods, make quantification stability, improve whole efficiency and product quality, also greatly promoted the efficiency of physical blowing and the stability of product simultaneously.
The present invention is provided with frequency converter on each motor, can regulate the motor frequency of each extrusion layer to control the extrusion capacity of dielectric by frequency converter according to the demand of different product.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Wherein: 1 polyethylene foam extruder motor, 2 polyethylene transmit extruder motor, 3 outer extruder motors, 4 internal layer extruder motors, 5 polyethylene foam extruders, 6 polyethylene transmission extruders, 7 outer extruders, 8 internal layer extruders, 9 extruder adapters, 10 three-layer co-extruding machine heads.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, invention is described in further detail:
One four machine co-extrusion physic foaming extrusion devices as shown in Figure 1, comprise polyethylene foam extruder motor 1, polyethylene transmits extruder motor 2, outer extruder motor 3, internal layer extruder motor 4, polyethylene foam extruder 5, polyethylene transmits extruder 6, outer extruder 7, internal layer extruder 8, extruder adapter 9 and three-layer co-extruding machine head 10, the screw rod of described polyethylene foam extruder 5 is directly 20mm, draw ratio is 36: 1, compression ratio is 2: 1, the screw diameter that described polyethylene transmits extruder 6 is 20mm, draw ratio is 36: 1, compression ratio is 2.8: 1, the screw diameter of described outer extruder 7 and internal layer extruder 8 is 25mm, draw ratio is 28: 1, compression ratio is 4.5: 1.
Described polyethylene foam extruder motor 1 is connected with polyethylene foam extruder 5, described polyethylene foam extruder 5 transmits extruder 6 by extruder adapter 9 and polyethylene and is connected, described polyethylene transmits extruder motor 2 and is connected with polyethylene transmission extruder 6, and described polyethylene transmits extruder 6 and is connected with three-layer co-extruding machine head 10; Described outer extruder motor 3 is connected with outer extruder 7, and described outer extruder 7 is connected with three-layer co-extruding machine head 10; Described internal layer extruder motor 4 is connected with internal layer extruder 8, and described internal layer extruder 8 is connected with three-layer co-extruding machine head 10.Described polyethylene foam extruder 5 becomes L-type setting with the relative position that polyethylene transmits extruder 6.Described polyethylene foam extruder motor 1, polyethylene transmit on extruder motor 2, outer extruder motor 3 and internal layer extruder motor 4 and are provided with the frequency converter for governor motor frequency.
Polyethylene foam extruder motor 1 drives polyethylene foam extruder 5 to turn round, polyethylene forms foaming at this, enter polyethylene by adapter 9 again and transmit extruder 6, transmitting extruder motor 2 by polyethylene independently drives polyethylene to transmit extruder 6 to turn round, plastic material is fully plastified and plastic material is sent to three-layer co-extruding machine head 10 to form foaming layer, outer drive outer extruder 7 to turn round plastic material is transported to three-layer co-extruding machine head 10 by outer extruder motor 3 form skin, internal layer drives internal layer extruder 8 to turn round plastic material is transported to three-layer co-extruding machine head 10 by internal layer extruder motor 4 and forms internal layer.
Polyethylene foam extruder 5 polyethylene transmit the outer extruder 7 internal layer extruders 8 of extruder 6 can disposablely complete internal layer by interlayer extruding technology, foaming layer, outer three-decker, make three layers to lump together, extrusion insulation evenly, makes wire rod extrusion 0D, and concentricity is stable.As shown in Figure 1, polyethylene foam extruder 5 is horizontally disposed with, polyethylene transmits extruder 6 and vertically arranges, polyethylene foam extruder 5 becomes L-type setting with the relative position that polyethylene transmits extruder 6, adopt polyethylene to transmit the split-type structural that screw rod adds polyethylene foam screw rod, increase respectively screw conveyer power and plasticizing capacity by two screw rods, make quantification stability, improve whole efficiency and product quality, also greatly promoted the efficiency of physical blowing and the stability of product simultaneously.And by 1 polyethylene of polyethylene foam extruder motor separately transmit extruder motor 2 independently motor powerful power is provided.
Increase draw ratio and Luo cylinder temperature is distributed be rationally conducive to mixing and the plasticizing of plastics, the time that now plastics are heated in machine barrel is also longer, thus the plasticizing of plastics will fully, more even raising machine polymer amount.If required under constant prerequisite at plasticizing quality, after draw ratio increases, the rotating speed of screw rod can improve, thereby has increased the extrusion capacity of plastics.Reduce processing and the assembly difficulty of screw rod and machine barrel simultaneously; Reduce the possibility of bent screws, reduce the scraped finish of screw rod and machine tube inner wall, increase service life.
The present invention is provided with frequency converter on each motor, can regulate the motor frequency of each extrusion layer to control the extrusion capacity of dielectric by frequency converter according to the demand of different product, and described frequency converter adopts the MITSUBISHI A700 of Mitsubishi.
Because thin skin physical blowing product foam degrees is high, promote foam degrees stability need increase screw slenderness ratio (screw rod working portion length L is called draw ratio with the ratio of screw diameter Ds), domestic at present
the maximum draw ratio of 20mm screw rod only has 40, and calculates and only have draw ratio to reach more than 70 just to make foam degrees to reach 70% and can also stablize extrusion according to theory.On the other hand, it is long again that draw ratio reaches the more than 70 little length of single screw diameter, depends a motor power source alone powerful power cannot be provided, and the easily broken and plastics of screw rod cannot plastify fully in spiral shell cylinder, cannot ensure the stability of foam degrees, cause efficiency low.Increase draw ratio, but it is long again that draw ratio reaches the more than 70 little length of single screw diameter, depend a motor power source alone powerful power cannot be provided, easily broken and the plastics of screw rod cannot plastify fully in spiral shell cylinder, cannot ensure the stability of foam degrees, cause efficiency low, adopting L-type is continue to adopt the advantage of draw ratio but can avoid and solve the problem that high length-diameter ratio brings.
Claims (3)
1. a machine co-extrusion physic foaming extrusion device, it is characterized in that: comprise polyethylene foam extruder motor (1), polyethylene transmits extruder motor (2), outer extruder motor (3), internal layer extruder motor (4), polyethylene foam extruder (5), polyethylene transmits extruder (6), outer extruder (7), internal layer extruder (8), extruder adapter (9) and three-layer co-extruding machine head (10), described polyethylene foam extruder motor (1) is connected with polyethylene foam extruder (5), described polyethylene foam extruder (5) transmits extruder (6) by extruder adapter (9) and polyethylene and is connected, described polyethylene transmits extruder motor (2) and is connected with polyethylene transmission extruder (6), described polyethylene transmits extruder (6) and is connected with three-layer co-extruding machine head (10),
Described outer extruder motor (3) is connected with outer extruder (7), and described outer extruder (7) is connected with three-layer co-extruding machine head (10);
Described internal layer extruder motor (4) is connected with internal layer extruder (8), and described internal layer extruder (8) is connected with three-layer co-extruding machine head (10).
2. four machine co-extrusion physic foaming extrusion devices according to claim 1, is characterized in that: described polyethylene foam extruder (5) becomes L-type setting with the relative position that polyethylene transmits extruder (6).
3. four machine co-extrusion physic foaming extrusion devices according to claim 1 and 2, is characterized in that: described polyethylene foam extruder motor (1), polyethylene transmit on extruder motor (2), outer extruder motor (3) and internal layer extruder motor (4) and be provided with the frequency converter for governor motor frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410219852.XA CN103978621A (en) | 2014-05-20 | 2014-05-20 | Four-motor physical foaming co-extrusion device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410219852.XA CN103978621A (en) | 2014-05-20 | 2014-05-20 | Four-motor physical foaming co-extrusion device |
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| CN103978621A true CN103978621A (en) | 2014-08-13 |
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| CN201410219852.XA Pending CN103978621A (en) | 2014-05-20 | 2014-05-20 | Four-motor physical foaming co-extrusion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373652A (en) * | 2016-08-26 | 2017-02-01 | 杭州乐荣电线电器有限公司 | Cable special for signal receiving and sending connection assembly |
Citations (7)
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| CN85106109A (en) * | 1985-08-13 | 1987-03-04 | 赫曼伯斯托福机械制造公司 | A kind of method for supervising and device of producing long strip |
| JPS6467832A (en) * | 1987-09-09 | 1989-03-14 | Hitachi Cable | Manufacture of foaming plastic-insulated electric wire |
| CN2218641Y (en) * | 1995-01-18 | 1996-01-31 | 王守信 | Three layer coextruding plastic core foaming pipe head |
| JPH10340645A (en) * | 1997-06-05 | 1998-12-22 | Mitsubishi Cable Ind Ltd | Foaming extrusion molding method and foaming extrusion molding device of coaxial cable insulator |
| CN1285272A (en) * | 1999-08-12 | 2001-02-28 | 住友化学工业株式会社 | Multi-layer polyolefine foaming sheet material and method and apparatus for making same products |
| CN1336279A (en) * | 2001-08-15 | 2002-02-20 | 南亚塑胶工业股份有限公司 | Composite nacreous paper label and its making process and equipment |
| CN203401717U (en) * | 2013-07-31 | 2014-01-22 | 东莞市伟帮机械有限公司 | Three-screw extruder of three-layer coextrusion sheet machine based on PP (polypropylene) foaming |
-
2014
- 2014-05-20 CN CN201410219852.XA patent/CN103978621A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106109A (en) * | 1985-08-13 | 1987-03-04 | 赫曼伯斯托福机械制造公司 | A kind of method for supervising and device of producing long strip |
| JPS6467832A (en) * | 1987-09-09 | 1989-03-14 | Hitachi Cable | Manufacture of foaming plastic-insulated electric wire |
| CN2218641Y (en) * | 1995-01-18 | 1996-01-31 | 王守信 | Three layer coextruding plastic core foaming pipe head |
| JPH10340645A (en) * | 1997-06-05 | 1998-12-22 | Mitsubishi Cable Ind Ltd | Foaming extrusion molding method and foaming extrusion molding device of coaxial cable insulator |
| CN1285272A (en) * | 1999-08-12 | 2001-02-28 | 住友化学工业株式会社 | Multi-layer polyolefine foaming sheet material and method and apparatus for making same products |
| CN1336279A (en) * | 2001-08-15 | 2002-02-20 | 南亚塑胶工业股份有限公司 | Composite nacreous paper label and its making process and equipment |
| CN203401717U (en) * | 2013-07-31 | 2014-01-22 | 东莞市伟帮机械有限公司 | Three-screw extruder of three-layer coextrusion sheet machine based on PP (polypropylene) foaming |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373652A (en) * | 2016-08-26 | 2017-02-01 | 杭州乐荣电线电器有限公司 | Cable special for signal receiving and sending connection assembly |
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Application publication date: 20140813 |