CN2714289Y

CN2714289Y - Equipment for manufacturing concurrent twist parallel double threaded rod plastic-wood composite material by one-step method

Info

Publication number: CN2714289Y
Application number: CNU2004200786340U
Authority: CN
Inventors: 李哲; 于有国
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-13
Filing date: 2004-08-13
Publication date: 2005-08-03
Anticipated expiration: 2014-08-13

Abstract

The utility model discloses equipment for manufacturing plastic-wood composite material, in particular to the equipment which is able to manufacture continuously by milling, dispersing, pressing, and molding the raw materials. The equipment comprises drawing-in device, extrusion device connected with the drawing-in device, and die assembly installed at the outlet of the extrusion device. The extrusion device comprises a heating device, a machine barrel, a screw rod workpiece, and a vacuum aspirating chamber, and an exhaust apparatus which is arranged at and communicated with the machine barrel. The screw rod workpiece is a twin-screw rod arranged in parallel which can make concurrent rotating movement, the screw rod consists of a core axle and a screw thread block arranged on the axle. The clearance between the machine barrel and the screw rod is 5-15 millimetres at the interface of the extrusion device and the drawing-in device. The utility model is characterized in that the manufacturing technical condition is easy to control, the extrusion device workpiece has long service life, the finished goods does not have the defects of pore and areosis, and the consumption of the manufacturing cost is low.

Description

One-step method cocurrent and parallel twin-screw Wood plastic composite manufacturing equipment

Technical field

The utility model relates to a kind of manufacturing equipment of making Wood plastic composite, especially can be continuously that raw material is mixing, the manufacturing equipment of the production Wood plastic composite of dispersion, plasticizing, pressurization, moulding.

Background technology

Wood plastic composite is the new generation of green environment-friendly materials that are surging forward in the world in recent years, it mainly makes raw material is natural fiber (wood chip, sawdust, stalk, rice chaff etc.), plastics (PE, PP, PVC, ABS, PET, waste plastics, regenerated plastics etc.), and additive and processing aid such as modifier, compatilizer, lubricant, industrial pigment.The manufacturing process of existing Wood plastic composite shape product has following two kinds, and the first is used earlier the extruder granulation, then with single screw extrusion machine plasticizing, pressurization, by formed in mould two-step method making fabrication technique; Another be to use the tapering double screw extruder mixing, disperse, plasticizing, pressurization, by formed in mould one-step method manufacturing process.

The shortcoming that the manufacturing technology of above-mentioned two kinds of Wood plastic composite shape products exists is as follows:

The shortcoming that exists with the two-step method making fabrication technique has, produce Wood plastic composite and need use two complete equipments, big, required manpower and the energy cost in the production space that takies is higher, raw material causes the decomposition variable color easily through twice plasticizing in addition, the difficult control of processing parameter, manufactured goods sometimes aberration big, have pore and a defective such as loose.

The shortcoming of using the one-step method fabrication process Wood plastic composite of tapering double screw extruder to exist, the one, the dispersion of raw material in process, plasticizing effect is poor, the goods inner materials is inhomogeneous; The 2nd, the plasticizing of material is by adding gentle compression, can not changing technological parameter according to the material characteristic of different components, thereby can have influence on Products Quality; The 3rd, have only an exhaust outlet, and far away apart from the exit position, do not reach desirable exhaust effect, there is pore and loose goods inside; The 4th, screw rod and machine barrel quick abrasion, service life lack.Therefore, process conditions are undesirable, Products Quality is relatively poor, equipment cost consumption is bigger.

Summary of the invention

The technical problems to be solved in the utility model is: propose that a kind of processing technology is good, the equipment of manufactured goods quality height, production Wood plastic composite that cost consumption is low, thereby overcome the shortcoming that above-mentioned existing manufacturing process exists.

In order to solve above technical problem, one-step method cocurrent and parallel twin-screw Wood plastic composite manufacturing equipment of the present utility model comprises drawing-in device, the extrusion device that is connected with drawing-in device and is installed in the mould of extrusion device outlet, described extrusion device contains having heaters, machine barrel, screw rod workpiece and vacuum suction chamber, in addition, also be provided with exhaust apparatus, described exhaust apparatus is installed on the described machine barrel and communicates with its inside; Described screw rod workpiece is the twin-screw that the work that be arranged in parallel rotatablely moves in the same way, and described screw rod is combined by mandrel and threaded block mounted thereto; At the interface of extrusion device and drawing-in device, the gap of described machine barrel and screw rod is 5～15 millimeters.

Further improvement of the utility model is to comprise also and hold the body pump that described appearance body pump is installed between described extrusion device and the mould.

During the utility model work, material stirs, delivers in the machine barrel of extrusion device through feeder, under the effect of cocurrent and parallel twin-screw, flow to the port of export, material through preheating, fusion, mixing, natural exhaust, dispersion, kneading, plasticizing, vacuum exhaust and pressurization, is produced by mould molding and is moulded woodwork in process of flowing.Because the mandrel and the threaded block of machine barrel, helical axis are combiner, can change the length of machine barrel and helical axis neatly, thereby can carry out optimized combination according to the needs of different raw materials and different processing requests, to reach the ideal technology condition; Can on machine barrel, set up exhaust outlet, the moisture in the material is fully discharged, the inner pore-free of goods; In addition, hold the body pump, can under the situation of the less load of extrusion device, increase material pressure, can improve the density of material of manufactured goods, improve the service life of extrusion device machine barrel and screw rod owing between extrusion device and mould, be provided with.

Obviously, the technical scheme that the utility model adopted has overcome the shortcoming that the tapering double screw extruder exists, and has that processing technology is good, a manufactured goods quality height, advantage that cost consumption is low, and therefore, product has good market prospects.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the partial structurtes schematic diagram of the utility model embodiment one.

Fig. 2 is the partial enlarged drawing I of Fig. 1.

Fig. 3 is the vertical view of Fig. 1.

Fig. 4 is the partial enlarged drawing II of Fig. 1.

Fig. 5 is the partial structurtes schematic diagram of the extrusion device import department of the utility model embodiment two.

Fig. 6 is the partial structurtes schematic diagram in the extrusion device exit of the utility model embodiment two.

The specific embodiment

Embodiment one

Shown in Fig. 1～4, the one-step method cocurrent and parallel twin-screw Wood plastic composite manufacturing equipment of present embodiment, comprise drawing-in device 1, extrusion device 2, exhaust apparatus 3, vacuum room 4 and mould 5, drawing-in device 1 is connected with the import of extrusion device 2, exhaust apparatus 3 and vacuum room 4 are installed in the middle part of extrusion device 2 respectively and near the exit, mould 5 docks with the outlet of extrusion device 2.

As can be seen, drawing-in device 1 is made up of housing 1-5, agitator 1-1, helical blade conveyer 1-2 and blanking chamber 1-3 from Fig. 1, Fig. 2, and helical blade conveyer 1-2 is arranged on the bottom of agitator 1-1, is connected with the side import of blanking chamber 1-3.Transportation section at material is provided with heater, makes material many some moisture of evaporation before entering extrusion device 2, and the top of blanking chamber 1-3 is that hatch frame helps moisture and distributes.

Extrusion device 2 is a fabricated structure as can be seen from Fig. 2～Fig. 4, machine barrel 2-2 is assembled by more piece, electric heater 2-3 is coated on the outside of machine barrel 2-2, screw rod 2-1 is made of splined shaft 2-5 and a plurality of threaded block 2-4 mounted thereto, two screw rod 2-1 are arranged in parallel, equidirectional rotation, at the interface of extrusion device 2 with drawing-in device 1, the gap of described machine barrel 2-2 and screw rod 2-1 is 5～15 millimeters.The processing sections length of extrusion device 2 can be regulated according to how many processing requests different with goods of different material, fiber loading, to reach best fabrication process condition, make residence time of material length suitable, guarantee material mixing, disperse, shear, mediate and plasticizing processing fully.The length of processing sections is 16～48 with the span of the ratio of the internal diameter of machine barrel 2-2.Exhaust apparatus 3 comprises discharge duct 3-2 and ventilating fan 3-1, and exhaust apparatus 3 is installed in the centre position of machine barrel 2-2, guarantees to discharge in time, fully the gas that material gives out in the process.In addition, can also in process, add assistant agent by the closable opening of exhaust apparatus 3 in case of necessity, obtain better processing effect.Material is extruded device 2 pressurization extrude after, the wood-plastic composite material products is made in mould 5 moulding of passing through immediately.

Facts have proved the one-step method cocurrent and parallel twin-screw Wood plastic composite manufacturing equipment of present embodiment, fabrication process condition is controlled easily, the cycle in service life of the workpiece machine barrel of extrusion device and screw rod is long, and pore-free in the manufactured goods, defective, processing cost such as loose consume low.

Embodiment two

The difference of present embodiment and embodiment one, the one, between extrusion device 2 and mould 5, increase gear pump 6 (referring to Fig. 6) has been installed, reach 0～40MPa thereby increase material pressure, to improve the density of material of manufactured goods; The 2nd, with the sealing suitable for reading of the blanking chamber 1-3 of drawing-in device, set up Compulsory feeder used (referring to Fig. 5), the helical axis 1-4 that is in erectility promptly is set in the 1-3 of blanking chamber, in extrusion device 2, the drawing-in device 2 of this structure is suitable for carrying fluffy raw material with the mass transport among the 1-3 of blanking chamber in pressure.Other structures, the function of present embodiment are identical with embodiment one, so repeat no more.

In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. one-step method cocurrent and parallel twin-screw Wood plastic composite manufacturing equipment, comprise drawing-in device, the extrusion device that is connected with drawing-in device and be installed in the mould that extrusion device exports, described extrusion device contains having heaters, pin-connected panel machine barrel, screw rod workpiece and vacuum suction chamber, it is characterized in that: also be provided with exhaust apparatus, described exhaust apparatus is installed on the described machine barrel and communicates with its inside; Described screw rod workpiece is the twin-screw that the work that be arranged in parallel rotatablely moves in the same way, and described screw rod is combined by mandrel and threaded block mounted thereto; At the interface of extrusion device and drawing-in device, the gap of described machine barrel and screw rod is 5～15 millimeters.

2. according to the described one-step method cocurrent and parallel of claim 1 twin-screw Wood plastic composite manufacturing equipment, it is characterized in that: also comprise and hold the body pump, described appearance body pump is installed between described extrusion device and the mould.

3. according to claim 1 or 2 described one-step method cocurrent and parallel twin-screw Wood plastic composite manufacturing equipments, it is characterized in that: described exhaust apparatus comprises airduct and exhaust blower, described airduct is connected with the gas outlet of described machine barrel, described exhaust blower is installed in the airduct, also is provided with the charging aperture that can close on airduct.

4. according to the described one-step method cocurrent and parallel of claim 3 twin-screw Wood plastic composite manufacturing equipment, it is characterized in that: described drawing-in device comprises agitator, helical blade conveyer and open-topped blanking chamber, described helical blade conveyer is arranged on the exit of agitator bottom, is connected with the side import of blanking chamber.

5. according to the described one-step method cocurrent and parallel of claim 3 twin-screw Wood plastic composite manufacturing equipment, it is characterized in that: described drawing-in device comprises agitator, helical blade conveyer and Compulsory feeder used, described helical blade conveyer is arranged on the exit of agitator bottom, is connected with the import of Compulsory feeder used side; The described Compulsory feeder used helical axis that is erectility that is provided with, its lower end is connected with the charging aperture of described machine barrel.