CN1846973A - Composite wood-plastic material blow molding machine - Google Patents
Composite wood-plastic material blow molding machine Download PDFInfo
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- CN1846973A CN1846973A CNA2006100789751A CN200610078975A CN1846973A CN 1846973 A CN1846973 A CN 1846973A CN A2006100789751 A CNA2006100789751 A CN A2006100789751A CN 200610078975 A CN200610078975 A CN 200610078975A CN 1846973 A CN1846973 A CN 1846973A
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- storage cylinder
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Abstract
The composite wood-plastic material blow molding machine is one parallel double screw extruder provided with storage cylinder and mold closing device. The parallel double screw extruder has outlet communicated with the storage cylinder, and the storage cylinder has outlet over the mold closing device. The composite wood-plastic material blow molding machine has the functions of deairing, mixing, forming at low temperature and low pressure and eliminating residual stress, and is used in forming composite wood-plastic material product in high quality.
Description
Technical field
The present invention relates to the machine-shaping device of wood plastic composite (WPC), especially a kind of composite wood-plastic material blow molding machine.
Background technology
The forming processing technology of current domestic and international wood plastic composite (WPC) is stretched over the injection mo(u)lding field from the extrusion molding field.Mould extrusion molding as wood, although the rheological property of wood plastic composite differs widely with common plastic material, the injection mo(u)lding that wood is moulded still begins from the common plastics injection moulding machine.Find in the practice that current wood is moulded injection moulding and mainly existed following four aspect problems and need to be resolved hurrily:
The first, the relative intensity of goods is lower
This is because the melt flowability of wood plastic composite is very poor, and injection mo(u)lding requires the melt of material to be easy to flow, this has just located the necessary high fluidity of the matrix resin in the wood plastic composite, be that molecular weight is relatively low, so, low this outstanding problem of product strength occurred from the material angle.
The second, goods buckling deformation
Owing to mould in the injection molding technology at wood, the Wood-plastic material of fusion is in the temperature and pressure current downflow higher than extrusion molding, and solidified by quenching rapidly, so the residual stress in the goods can cause goods generation buckling deformation, product volume heals when big, and this problem is more serious.
Three, the initial performance of material can not remain to end article well
Because processing temperature, injection pressure, the shear rate of injection mo(u)lding are all very high, the degraded and the coking phenomenon of material (particularly string part) take place at any time, so the initial performance of material with the carrying out of process, is difficult to remain to end article.
Four, moisture content and low influence of waving part product surface
In the injection molding process of wood plastic composite, contained moisture content and low wave part and pyroligneous acid gas all is difficult to remove in the material, these moisture content in the melt and lowly wave part become blast in die cavity impact product surface, gently then produce speckle, and are heavy then cause defective.Tracing it to its cause, all is not possess in the technical process of injection mo(u)lding due to the function of flash distillation exhaust.
These problems seriously affect the process of wood plastic composite to the application development, the development need specialized apparatus of situation.
Summary of the invention
The purpose of this invention is to provide a kind of composite wood-plastic material blow molding machine, to solve the aforesaid drawbacks.The present invention have thorough exhaust, fully mixing and at low temperature, compress the function of blow molding down, be a kind of wood plastic composite former that can significantly improve the Wood model compound products quality.
The objective of the invention is to realize by following proposal: composite wood-plastic material blow molding machine of the present invention, comprise extrusion device, it is characterized in that described extrusion device is parallel parallel dual-screw extruding machine, and be furnished with storage cylinder assembly and mold closing mechanism; The outlet of described parallel parallel dual-screw extruding machine communicates with the storage cylinder assembly and links to each other; The outlet of storage cylinder assembly is positioned at the top of mold closing mechanism.
Described parallel parallel dual-screw extruding machine comprises machine barrel and is arranged in 2 screw rods of machine barrel; Machine barrel is a multistage, wherein is provided with a plurality of exhaust outlets; The axial positions corresponding to charge door and exhaust outlet on the screw rod in described machine barrel adopts wide guide thread element; Be provided with the kneading piece in mixing district; The screwing element of middle helical pitch and narrow helical pitch is arranged on the upstream of kneading piece and the end of screw rod; In the end the upstream of an exhaust outlet is provided with a pair of reverse thread element or oppositely mediates piece.
The machine barrel of described parallel parallel dual-screw extruding machine is preferably 9 to 10 sections, wherein is provided with 3 to 4 exhaust outlets; The machine barrel of described parallel parallel dual-screw extruding machine most preferably be 9 sections, wherein be provided with 4 exhaust outlets.Described storage cylinder assembly is a plunger type storage cylinder assembly, and storage cylinder wherein is furnished with plunger, and plunger is back and forth promoted by cylinder or oil cylinder, is provided with the shunting plug of band air blowing assembly in the storage cylinder, and parison mouth mould is equipped with in the exit of storage cylinder.
Described mold closing mechanism is an a kind of double-open type mechanism, comprises movably mould.
This composite wood-plastic material blow molding machine is a kind ofly to have thorough exhaust, fully mixing concurrently, and under lower temperature, pressure extruded parisons, blow molding, multi-functional in the professional wooden molded equipment of one.The major function of extrusion device is to finish the flash distillation exhaust in mixing plasticizing process, stably carries the wood of relative low temperature (for the injection moulding processing temperature) to mould melt to accumulator.The major function of storage cylinder assembly is to release parison under low relatively pressure condition.Mold closing mechanism is located at a mouthful mould below, and major function is that folding mould mould is finished single wall blowing or double-walled blowing or mold pressing blow molding etc.
The way of setting the functional unit of screw rod is: in the axial positions with respect to charge door and exhaust ports, adopt wide helical pitch forward screwing element to produce low degree of filling; Forward kneading piece and neutrality are set in mixing district pinch piece to constitute suitable melting effect; Middle helical pitch and narrow helical pitch screwing element are arranged on upstream and the screw rod end of mediating piece improve density with the compacting material; In the end the upstream of an exhaust outlet is established a pair of reverse thread element or is oppositely mediated piece, to strengthen mixed effect and to prevent the exhaust outlet overflow.
Said structure is to adjust by the processing tasks of wood plastic composite.Task herein is: fully mixing and thorough exhaust, and fully mixing is to be issued to wood in the situation of not destroying string to mould the two-phase mixing; Thoroughly exhaust is to utilize flash principle the moisture content of different content in the material and low waving part thorough an eliminating.
That sets for this purpose extrudes operating procedure and can be:
Feeding → molten mixing → mixing → exhaust → mixing → exhaust → mixing → exhaust → mixing → exhaust → melt compression is extruded.
To design four sections degassing functions and suitable mixing condition in screw rod and the machine barrel by this, with exhaust and mixing place can control under, to reach the requirement of the abundant mixing and thorough exhaust that does not damage string; With this operating procedure of finishing defined, reach the basic demand of flash distillation exhaust.
Described storage cylinder assembly and outlet of extruder are connected together, and material is extruded the machine screw rod transmission and goes into to store up cylinder, when reaching a certain amount of, by the plunger pushing of cylinder (or oil cylinder) control, extrude through a shunting plug and a mouthful mould.
Described mold closing mechanism is an a kind of double-open type mechanism, has the ejection device device, can assemble the single wall blow mold, also can adorn the double-walled blow mold, also can assemble mold pressing blow mold or tri-dimensional blow moulding mould.Under the temperature and pressure low, with the parison blow molding more than injection mo(u)lding.
Compared with prior art, the present invention saves drying and dewatering, extruding pelletization multiple working procedure with unique flash distillation exhaust, fully mixing and low temperature, low pressure blow molding three conditions; Original " M " type two step method Processing Curve (heating and melting → cooling and shaping → heating and melting → cooling and shaping) is reduced to " n " type one-step method Processing Curve (heating and melting → cooling and shaping).Simplify technology, reduced processing charges.
Compared with prior art, the above-mentioned condition of the present invention helps the plasticizing quality of product and the raising of final products performance.The intensity of product can processing have the high relatively vector resin of molecular weight that injection mo(u)lding can not be processed now, so can improve; Can be with the blow molding of low temperature, low pressure, thus avoid in goods, staying residual stress, the buckling deformation of prevention goods.Therefore, the present invention can avoid the distortion of goods, the initial performance of material can be remained into end article well, and wood-fibred is burnt to be stuck with paste and can not make as injection mo(u)lding; And the two sides pressing of parison can be got up, become firmer wood plastic product; More help the large-scale wood plastic product of moulding.
In sum, composite wood-plastic material blow molding machine of the present invention has thorough exhaust, fully mixes and at low temperature, low pressure compacted under, eliminate the function of goods residual stress, be that a kind of specialized wood is moulded apparatus for blow moulding, can significantly improve wood plastic composite or Products Quality, open up wooden molded application.
Description of drawings
Fig. 1 is the structural representation of this composite wood-plastic material blow molding machine.
Fig. 2 is combination machine barrel 1-6 in the extruder and the structural representation of combined threaded rod 1-8.
Fig. 3 is a mold pressing blow molding schematic diagram.
Code name explanation among Fig. 1,3
1, extruder:
The 1-1 drive motors; The 1-2 gearbox; The 1-3 hopper; The 1-4 metering feed device; The 1-5 charging aperture; The 1-6 machine barrel; The 1-7 exhaust outlet; The parallel parallel dual-screw of 1-8.
2, storage cylinder assembly
2-1 cylinder (or oil cylinder); The 2-2 plunger; 2-3 stores up cylinder; 2-4 shunts core; 2-5 air blowing assembly; 2-6 parison mouth mould; The 2-7 parison.
3, mold closing mechanism
3-1, mould; 3-2, matched moulds assembly.
Main code name explanation among Fig. 2
The I-screwing element
The wide helical pitch forward of I-1 screwing element; I-2 helical pitch forward screwing element; Helical pitch forward screwing element among the I-3; The narrow helical pitch forward of I-4 screwing element; The narrow helical pitch reverse thread of I-5 element.
II-mixes, distribution member
II-1,45 ° of alternate angle forwards of five bed thickness laminations are mediated piece;
II-2,45 ° of alternate angle forwards of five layers of thin lamination are mediated piece;
II-3, the neutral piece of mediating of 90 ° of alternate angles of five layers of thin lamination;
II-4,60 ° of alternate angle forwards of four layers of thin lamination are mediated piece;
II-5,45 ° of alternate angles of five layers of thin lamination are oppositely mediated piece.
The specific embodiment
Fig. 1 is the schematic diagram of composite wood-plastic material blow molding machine, comprises an extrusion device, is parallel parallel dual-screw extruding machine 1, and be furnished with storage cylinder assembly 2 and mold closing mechanism 3; The outlet of described parallel parallel dual-screw extruding machine 1 communicates with storage cylinder assembly 2 and links to each other; The outlet of storage cylinder assembly 2 is positioned at the top of mold closing mechanism 3.
At described storage cylinder assembly 2 are plunger type storage cylinder assemblies, storage cylinder 2-3 wherein is furnished with plunger 2-2, plunger 2-2 is back and forth promoted by cylinder or oil cylinder 2-1, is provided with the shunting plug 2-4 of band air blowing assembly 2-5 in the storage cylinder 2-3, and parison mouth mould 2-6 is equipped with in the exit of storage cylinder 2-3.
Below parison mouth mould 2-6, have the matched moulds assembly 3-2 in the mold closing mechanism 3, on the matched moulds assembly 3-2 mould 3-1 is housed.
Fig. 2 is combination machine barrel 1-6 in the parallel parallel dual-screw extruding machine 1 and the structural representation that makes up machine barrel 1-8.
Described parallel parallel dual-screw extruding machine 1 comprises machine barrel 1-6 and is arranged in 2 screw rods of machine barrel 1-6; Machine barrel 1-6 in the present embodiment is divided into 9 sections, and wherein first section has charging aperture 1-5 (with reference to Fig. 1), and the 3rd, 4,6,8 section has steam vent 1-7; Dui Ying combination twin-screw 1-8 comprises screwing element I and mixing, distribution member II with it.Screwing element I selects engagement in the same way from the conventional two head thread elements of the type of sweeping, get it stronger conveying effect is arranged, material is time of staying weak point therein, and self-cleaning is good, can set up high pressure in short axial distance and overcome owing to resistances that hybrid element produced such as retrodirective component, shearing elements.That the lead of screwing element I is divided into is wide, inferior, in, narrow different units, in order to the degree of filling of control material in different axial location screw channels.Screwing element I also is provided with a small amount of reverse thread element, as isolation barrier, in order to promote fusion, strengthens mixed effect and prevents the exhaust overflow.Mix and distribution member II, select two to mediate block element, its stagger arrangement angle is divided into 45 °, 60 °, 90 ° three kinds, flow to divide a forward, oppositely, neutral three kinds, characteristics such as it is big to get the selenodont space that itself and machine tube inner wall form, and carrying capacity is big, and the shearing of generation is very not strong, to adapt to the mixed of string and polymer, so that the initial performance of wood plastic composite well remains into end article.As shown in Figure 2,, produce low degree of filling, mixing, distribution member kneading piece II are set in mixing district with wide helical pitch screwing element I-1 in axial positions corresponding to charge door 1-5 and exhaust outlet 1-7; Middle helical pitch screwing element I-3 and narrow helical pitch screwing element are arranged on upstream and the screw rod end of mediating piece, with the compacting material, improve density, the in the end upstream of exhaust outlet 1-7, a pair of reverse thread element I-5 is set or oppositely mediates piece II-5, to strengthen mixed effect and to prevent the exhaust overflow.Finish the operating procedure that feeding → molten mixing → mixing → exhaust → mixing → exhaust → mixing → exhaust → mixing → exhaust → the melt compression is extruded with this structure.
Fig. 3 is a kind of form of mold pressing blow molding, described mold closing mechanism 3 is a kind of double-open type mechanisms, comprising that movably mould 3-1 can assemble single wall wood moulds blow molding mould, can assemble also that double-walled wood is moulded blow molding mould or mold pressing wood is moulded blow mold.That adopt in the illustrated mold closing mechanism 3 is (shallow stretching) the mould 3-1 that is close to the plane, comprises punch and die.During work, the parison 2-7 (shown in Fig. 3 a) that the punch in left side will come out from parison mouth mould 2-6 pushes the right side to, makes (shown in Fig. 3 b) in its die that enters the right side, forms the goods (shown in Fig. 3 c) of double-walled.Owing to be processed with the convexconcave part of cooperation on the mould, just formed the appointed part of inflation and compression, tabular and case, shell based article with moulding.This shows, but wood is moulded not only inflation parison of blow molding technology, the two sides of parison can also be pressed into firmer goods, also the inserts of metal or injection mo(u)lding can be placed in the middle of the mould, neatly the various wood plastic products of moulding.
Claims (6)
1, composite wood-plastic material blow molding machine comprises extrusion device, it is characterized in that described extrusion device is parallel parallel dual-screw extruding machine (1), and is furnished with storage cylinder assembly (2) and mold closing mechanism (3); The outlet of described parallel parallel dual-screw extruding machine (1) communicates with storage cylinder assembly (2) and links to each other; The outlet of storage cylinder assembly (2) is positioned at the top of mold closing mechanism (3).
2, composite wood-plastic material blow molding machine according to claim 1 is characterized in that described parallel parallel dual-screw extruding machine (1) comprises machine barrel (1-6) and is arranged in 2 screw rods (1-8) of machine barrel (1-6); Machine barrel (1-6) is a multistage, wherein is provided with a plurality of exhaust outlets (1-7); The axial positions corresponding to charge door (1-5) and exhaust outlet (1-7) on the screw rod (1-8) in described machine barrel (1-6) adopts wide guide thread element; Be provided with the kneading piece in mixing district; The screwing element of middle helical pitch and narrow helical pitch is arranged on the upstream of kneading piece and the end of screw rod; In the end the upstream of an exhaust outlet is provided with a pair of reverse thread element or oppositely mediates piece.
3. composite wood-plastic material blow molding machine according to claim 2 is characterized in that the machine barrel (1-6) of described parallel parallel dual-screw extruding machine (1) is 9 to 10 sections, wherein is provided with 3 to 4 exhaust outlets.
4. composite wood-plastic material blow molding machine according to claim 3 is characterized in that the machine barrel (1-6) of described parallel parallel dual-screw extruding machine (1) is 9 sections, wherein is provided with 4 exhaust outlets.
5. composite wood-plastic material blow molding machine according to claim 1, it is characterized in that at described storage cylinder assembly (2) be plunger type storage cylinder assembly, storage cylinder (2-3) wherein is furnished with plunger (2-2), plunger (2-2) is back and forth promoted by cylinder or oil cylinder (2-1), be provided with the shunting plug (2-4) of band air blowing assembly (2-5) in the storage cylinder (2-3), parison mouth mould (2-6) is equipped with in the exit of storage cylinder (2-3).
6. composite wood-plastic material blow molding machine according to claim 1 is characterized in that described mold closing mechanism (3) is an a kind of double-open type mechanism, comprises movably mould (3-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100789751A CN1846973A (en) | 2006-04-28 | 2006-04-28 | Composite wood-plastic material blow molding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100789751A CN1846973A (en) | 2006-04-28 | 2006-04-28 | Composite wood-plastic material blow molding machine |
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| CN1846973A true CN1846973A (en) | 2006-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006100789751A Pending CN1846973A (en) | 2006-04-28 | 2006-04-28 | Composite wood-plastic material blow molding machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529062A (en) * | 2012-01-30 | 2012-07-04 | 天津戈瑞德新材料科技有限公司 | Screw rod assembly used for extrusion processing without dry processing to nylon |
| CN102794900A (en) * | 2012-07-27 | 2012-11-28 | 上海英科实业有限公司 | Screw of twin-screw extruder for regeneration processing of waste plastic |
| CN102794899A (en) * | 2012-07-27 | 2012-11-28 | 上海英科实业有限公司 | Screw of twin-screw extruder for compound modification of waste rubber-plastic blending system |
| CN103481494A (en) * | 2013-09-27 | 2014-01-01 | 昆山凯诺尔金属制品有限公司 | Plastic extruder with impurity removing function |
| CN105216293A (en) * | 2015-10-27 | 2016-01-06 | 宜兴市光辉包装材料有限公司 | A kind of blow molding packaging film double screw extruder |
| CN109955493A (en) * | 2019-01-30 | 2019-07-02 | 郑州大学 | A kind of supercritical fluid extrusion-blown modling foaming and forming apparatus and technique |
| CN111958946A (en) * | 2020-07-16 | 2020-11-20 | 李旭燕 | Material extruding device of blow molding machine |
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2006
- 2006-04-28 CN CNA2006100789751A patent/CN1846973A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529062A (en) * | 2012-01-30 | 2012-07-04 | 天津戈瑞德新材料科技有限公司 | Screw rod assembly used for extrusion processing without dry processing to nylon |
| CN102529062B (en) * | 2012-01-30 | 2015-05-20 | 天津万塑新材料科技有限公司 | Screw rod assembly used for extrusion processing without dry processing to nylon |
| CN102794900A (en) * | 2012-07-27 | 2012-11-28 | 上海英科实业有限公司 | Screw of twin-screw extruder for regeneration processing of waste plastic |
| CN102794899A (en) * | 2012-07-27 | 2012-11-28 | 上海英科实业有限公司 | Screw of twin-screw extruder for compound modification of waste rubber-plastic blending system |
| CN103481494A (en) * | 2013-09-27 | 2014-01-01 | 昆山凯诺尔金属制品有限公司 | Plastic extruder with impurity removing function |
| CN105216293A (en) * | 2015-10-27 | 2016-01-06 | 宜兴市光辉包装材料有限公司 | A kind of blow molding packaging film double screw extruder |
| CN109955493A (en) * | 2019-01-30 | 2019-07-02 | 郑州大学 | A kind of supercritical fluid extrusion-blown modling foaming and forming apparatus and technique |
| CN111958946A (en) * | 2020-07-16 | 2020-11-20 | 李旭燕 | Material extruding device of blow molding machine |
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