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One-step method wood-plastic composite material extrusion formation device based on single-screw extrusion

A wood-plastic composite material and single-screw extrusion technology, which is applied in the field of material manufacturing, can solve the problems of parallel twin-screw not well utilized, complex structure, high energy consumption, etc., and achieve low cost, simple overall structure, and low energy consumption. low effect

Inactive Publication Date: 2008-09-10
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a one-step wood-plastic composite material extrusion molding equipment based on single-screw extrusion, which can solve the existing one-step parallel

Method used

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  • One-step method wood-plastic composite material extrusion formation device based on single-screw extrusion
  • One-step method wood-plastic composite material extrusion formation device based on single-screw extrusion

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Experimental program
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specific Embodiment approach 1

[0009] Specific Embodiment 1: This embodiment is described with reference to FIGS. 1 to 4. The extrusion molding equipment of this embodiment consists of a frame 1, a first driving device 2, a second driving device 3, a quantitative feeding preheating device 4, a vacuum Composed of a devolatilization device 5, an extruding device, a mold setting device 6, and a traction and cutting device 7; the extruding device is a single-screw extruding device 8, and the power output end of the first driving device 2 is preheated with quantitative feeding The device 4 is connected by transmission, the discharge port of the quantitative feeding preheating device 4 is communicated with the feed port of the single-screw extruder 8 through the vacuum devolatilization device 5, and the power output end of the second driving device 3 is connected with the The single-screw extruder 8 is connected by transmission, and the discharge port of the single-screw extruder 8 communicates with the feed port ...

specific Embodiment approach 2

[0010] Specific Embodiment 2: This embodiment is described in conjunction with FIGS. 1 to 3. The vacuum devolatilization device 5 of this embodiment is a closed chamber, and an observation window 9 is arranged on the side wall of the closed chamber. The upper end is provided with a vacuum interface 10, and the discharge port of the quantitative feeding preheating device 4 is connected with the feed port of the single-screw extrusion device 8 through a closed chamber. Such setting is beneficial to material devolatilization. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0011] Specific embodiment three: this embodiment is described in conjunction with Figs. 1 to 3. The quantitative feeding preheating device 4 of this embodiment is composed of a hopper 11, a feeding screw 12, a feeding barrel 13, and a heating jacket 14; the hopper 11 is fixed on the frame 1, one end of the feeding screw 12 is connected to the power output end of the first driving device 2, the feeding barrel 13 is set on the feeding screw 12, and the feeding barrel 13 The inner chamber of the inner chamber is respectively connected with the feed inlet of the airtight chamber and the discharge outlet of the hopper 11, the heating jacket 14 is set on the feeding barrel 13, and the inner wall of the heating jacket 14 is in contact with the outer wall of the feeding barrel 13 . With this setting, the preheating of the material can ensure a good devolatilization effect. Other components and connections are the same as those in the second embodiment.

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Abstract

A one-step wood-plastic composite material extrusion molding equipment based on extrusion of a single screw relates to a piece of wood-plastic composite material extrusion molding equipment and aims at solving problems of complex structure, high manufacturing cost, high energy consumption of a one-step parallel double screw double-lift wood-plastic composite material extrusion molding equipment, especially the problem of poor utilization of the function of the parallel double screw. A first driving device (2) and a quantitative feeding and preheating device (4) are connected by transmission; the quantitative feeding and preheating device (4) and a single screw extrusion device (8) are communicated through a vacuum devolatilization device (5); a second driving device (3) is connected with the single screw extrusion device (8) in transmission; the single screw extrusion device (8) and a mould molding device (6) are communicated; a drawing and cutting device (7) is arranged on one side of a discharge hole of the mould molding device (6); the first and the second driving devices and the single screw extrusion device (8) are all fixed on a chassis (1). The wood-plastic composite material extrusion molding equipment has the advantages that the whole structure is simple; the production cost and energy consumption are low; the capacities of mixing scattering and extrusion decompression are high; the invention can be functioned as special equipment for one-step wood-plastic composite material extrusion molding.

Description

technical field [0001] The invention relates to a wood-plastic composite material extrusion molding equipment, which belongs to the technical field of material manufacturing. Background technique [0002] In the past ten years, due to the dual advantages of wood-plastic composite materials in comprehensive utilization of resources and environmental protection, they have developed rapidly in many countries. Wood-plastic composite material technology is developed on the basis of the fusion of wood science and plastic processing technology, and more than 80% of wood-plastic composite material products are formed by extrusion technology. [0003] The technical difficulty of extrusion molding of wood-plastic composite materials lies in: the material to be processed is heat-sensitive, the screw design should be able to adapt to a wide processing range, cut off less wood fiber, and evenly disperse the wood fiber and completely melt the material when the filling is high. The feedin...

Claims

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Application Information

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IPC IPC(8): B29C47/00B29C47/38B29C47/62B29C47/82B29K311/14B29C48/565B29C48/39B29C48/395B29C48/53
CPCB29C48/39B29C48/53B29C48/565
Inventor 李泽文王清文王海刚
Owner NORTHEAST FORESTRY UNIVERSITY