CN202781767U - Plastic-wood sectional bar co-extrusion die - Google Patents

Plastic-wood sectional bar co-extrusion die Download PDF

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Publication number
CN202781767U
CN202781767U CN2012203804951U CN201220380495U CN202781767U CN 202781767 U CN202781767 U CN 202781767U CN 2012203804951 U CN2012203804951 U CN 2012203804951U CN 201220380495 U CN201220380495 U CN 201220380495U CN 202781767 U CN202781767 U CN 202781767U
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CN
China
Prior art keywords
section
extruding
plastic
preformed
die
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Expired - Lifetime
Application number
CN2012203804951U
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Chinese (zh)
Inventor
闫梨
吕怀兴
张翔
李智专
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GEM Co Ltd China
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Shenzhen Gem High Tech Co Ltd
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Priority to CN2012203804951U priority Critical patent/CN202781767U/en
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Publication of CN202781767U publication Critical patent/CN202781767U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a plastic-wood sectional bar co-extrusion die. The co-extrusion die comprises a head co-extrusion die section and a shaping main die section connected with the head co-extrusion die section, wherein the head co-extrusion die section comprises a transition section, a pre-forming section and a forming section which are connected in sequence; the transition section is provided with a feeding column cavity; the pre-forming section and the forming section are respectively provided with a product forming cavity. The surface of the pre-forming section is provided with a co-extrusion runner; and the co-extrusion runner is communicated with the product forming cavity. By the design of the transition section, the pre-forming section and the forming section, the flow smoothness in the runner is ensured, dead angle and stagnant areas are prevented, the surface quality of extruded products is improved, the probability of die trimming is reduced, the service life of the die is prolonged and material pasting is avoided.

Description

A kind of plastic-wood section co-extruding mould
Technical field
The utility model relates to a kind of co-extruding mould, especially a kind of plastic-wood section co-extruding mould.
Background technology
The method with heating of moulding wooden extrusion molding and be makes moulds wood and becomes flow regime, then makes it by mold under the effect of certain pressure, makes continuous section bar after typing.Co-extruding mould is the key equipment of extrusion molding, and its Main Function is to be distributed in the runner moulding wooden melt, so that material is extruded from head with uniform speed, forms the goods of needed end surface shape and size.
Moulding wood is to mix the material that the fusion of heating forms with wood-fibred with moulding wood, therefore higher to the technological requirement of extrusion equipment because the coextruded layer of plastic-wood material is very thin, requires welding and the coating of sandwich layer and coextrusion surface layer better.Runner in the head contacts with the wooden melt of moulding that flows, and it is larger to wear and tear, and some moulds wood also can produce chemical gas in the high-temperature molding process, the corrosion runner; In addition owing in extrusion channel, constantly carry out the material distribution, melt arrives the path difference that die lip entrance each point is flowed through from outlet of extruder, certainly will cause along stroke pressure fall inconsistent, the corrosion of runner and wear intensity are strengthened, and make easily material the thickener phenomenon occur.
The utility model content
The purpose of this utility model is to provide a kind of plastic-wood section co-extruding mould, and it can make mobile smooth and easy at the runner inner chamber of material, has improved the surface quality of extruded product.
For achieving the above object, the utility model is by the following technical solutions:
A kind of plastic-wood section co-extruding mould, comprise head coextruding die section and the main mould section of the typing that is attached thereto, described head coextruding die section comprises the changeover portion that connects successively, preformed section and profiled section, described changeover portion is provided with the feed cylindrical cavity, described preformed section and profiled section are provided with the formed product chamber, and described preformed section surface is provided with co-extruding flow channel, and described co-extruding flow channel communicates with described formed product chamber.
Above-mentioned preformed section is provided with two sections, and described co-extruding flow channel is located at respectively on the two preformed section contact-making surfaces.
Co-extruding flow channel on the first above-mentioned preformed section is configured as ring-type.
Co-extruding flow channel on the second above-mentioned preformed section is configured as semicircular.
After adopting technique scheme, the utility model is compared with existing background technology, pass through changeover portion, the design of preformed section and profiled section, thus the mobile smooth and easy of runner inner chamber guaranteed, prevent the generation of dead angle and stagnant wake, improved the surface quality of extruded product, reduce the probability that repairs a die, improved the mold use life-span, also avoided the thickener phenomenon.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the cross sectional shape of die body profiled section;
Fig. 3 is the sectional view of the utility model preformed section one;
Fig. 4 is the sectional view of the utility model preformed section two.
The primary clustering symbol description:
110: changeover portion, 111: feed cylindrical cavity, 120: preformed section, 121: formed product chamber, 130: profiled section, 200: the main mould section of finalizing the design.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
See also shown in Figure 1ly, the utility model discloses a kind of plastic-wood section co-extruding mould, comprise head coextruding die section and the main mould section 200 of typing, head coextruding die Duan Yiduan links to each other with screw extruder, and an end links to each other with the main mould section 200 of finalizing the design, wherein:
Head coextruding die section comprises the changeover portion 110 that connects successively, preformed section 120 and profiled section 130, and changeover portion 110 is provided with feed cylindrical cavity 111, and preformed section 120 and profiled section 130 are provided with formed product chamber 121.
Preformed section 120 is divided into two sections, is respectively preformed section 121,122, cooperates shown in Fig. 3,4, on the cross section of preformed section 121, is provided with co-extruding flow channel 1211, and co-extruding flow channel 1211 is configured as ring-type.On the cross section of preformed section 122, be provided with co-extruding flow channel 1221, co-extruding flow channel 1221 is configured as semicircular.Co-extruding flow channel 1221 communicates with formed product chamber 121.During assembling, the co-extruding flow channel 1211 of preformed section 121 and the co-extruding flow channel 1221 of preformed section 122 are to be combined into a complete co-extruding flow channel, and communicate with formed product chamber 121.
During moulding, after basic unit's material entered by common material cylindrical cavity 111, during by preformed section 120, the surface layer material was coated on basic unit's material by co-extruding flow channel 1211,1221, and the formation coextruded layer confluxes.
Various extruding-out process flow processs of moulding woodwork are substantially identical, generally comprise raw material preparation, preheating, drying, extrusion molding, extrudate typing and cooling, goods traction with batch (or cutting), also need pass through post processing behind some product molding.Material mixes plasticizing in extruder, then enter successively the formed product chamber 121 of feed cylindrical cavity 111, preformed section 120 and the profiled section 130 of the changeover portion 110 of head coextruding die section.As shown in Figure 2, because the contraction change of parison after the moulding, need cross sectional shape with profiled section 130 be designed to slightly inward recessed rectangle like of edge, final molding is a solid cuboid finished product.In addition, also can determine the sectional view of its shaped article according to actual conditions, but generally speaking, by this mould, can be shaped to the co-extruded plastic-wood product, this co-extruded plastic-wood product comprises the A of basic unit and surface layer B, and the material of this surface layer is coated on basic unit's material.
The plastic-wood material extruded parisons still is in high temperature fused state after leaving head coextruding die section, has very large plastic deformation ability, should enter immediately the main mould section 200 of typing and finalize the design and cool off to prevent depression or the phenomenons such as distortion.
The above; it only is the better specific embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.

Claims (4)

1. plastic-wood section co-extruding mould, it is characterized in that: comprise head coextruding die section and the main mould section of the typing that is attached thereto, described head coextruding die section comprises the changeover portion that connects successively, preformed section and profiled section, described changeover portion is provided with the feed cylindrical cavity, described preformed section and profiled section are provided with the formed product chamber, and described preformed section surface is provided with co-extruding flow channel, and described co-extruding flow channel communicates with described formed product chamber.
2. a kind of plastic-wood section co-extruding mould as claimed in claim 1, it is characterized in that: described preformed section is provided with two sections, and described co-extruding flow channel is located at respectively on the two preformed section contact-making surfaces.
3. a kind of plastic-wood section co-extruding mould as claimed in claim 2, it is characterized in that: the co-extruding flow channel on described the first preformed section is configured as ring-type.
4. a kind of plastic-wood section co-extruding mould as claimed in claim 2 or claim 3, it is characterized in that: the co-extruding flow channel on described the second preformed section is configured as semicircular.
CN2012203804951U 2012-08-02 2012-08-02 Plastic-wood sectional bar co-extrusion die Expired - Lifetime CN202781767U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012203804951U CN202781767U (en) 2012-08-02 2012-08-02 Plastic-wood sectional bar co-extrusion die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012203804951U CN202781767U (en) 2012-08-02 2012-08-02 Plastic-wood sectional bar co-extrusion die

Publications (1)

Publication Number Publication Date
CN202781767U true CN202781767U (en) 2013-03-13

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CN2012203804951U Expired - Lifetime CN202781767U (en) 2012-08-02 2012-08-02 Plastic-wood sectional bar co-extrusion die

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106113449A (en) * 2016-08-23 2016-11-16 鹤山联塑实业发展有限公司 A kind of quickly cooled proof sea culture net cage pallet body produces die head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106113449A (en) * 2016-08-23 2016-11-16 鹤山联塑实业发展有限公司 A kind of quickly cooled proof sea culture net cage pallet body produces die head

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GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: Xinghua Road on the south side of the 518101 Guangdong city of Shenzhen province Baoan District Baoan District Center Rongchao Binhai building A building 20 room 2008

Patentee after: GEM Co.,Ltd.

Address before: Xinghua Road on the south side of the 518101 Guangdong city of Shenzhen province Baoan District Baoan District Center Rongchao Binhai building A building 20 room 2008

Patentee before: SHENZHEN GEM HIGH-TECH Co.,Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20130313