CN1579741A - Chemical Material Extrusion and shaping integrating apparatus - Google Patents

Abstract

The invention discloses an integrated device for extrusion and molding of chemical materials, which comprises a first motor, a reducer, a shaft coupling, a machine base, a hopper, a heating barrel, a screw, a machine head with an inner cavity, and the front end of the screw An injection piston is provided, and a material channel is formed between the inner cavity of the machine head and the injection piston. The spiral groove of the screw is connected with the inner cavity through the material channel. Bearings are arranged on the shaft and are connected with the inner hole of the intermediate transmission gear through threads and lock nuts. One end of the intermediate transmission gear is connected with the inner hole of the machine base through the transmission thread, and the other end of the intermediate transmission gear is connected with the second through the driving gear. The two motors are connected, and the rear end of the axially moving shaft is connected to the first motor through a coupling and a reducer. The invention integrates extrusion and molding of materials, and has the advantages of multi-function, integration, high efficiency and low energy, low cost and applicable Wide range of advantages.

Description

An integrated device for extrusion and molding of chemical materials

technical field

The invention relates to a chemical material processing device, in particular to a chemical material forming processing device.

Background technique

At present, for the processing and molding methods of chemical materials such as rubber, plastics and other products, it is generally used at home and abroad to divide the extrusion granulation and injection molding of materials into two independent processing processes, respectively in the independent extrusion device and injection molding. completed in the forming unit. Existing extrusion equipment has a simple extrusion function, which can complete the mixing, melting, extrusion and granulation of materials. There are two types of existing injection molding equipment: one is that in the barrel equipped with an injection screw, the material particles are continuously plasticized and sent to the inner cavity of the machine head, with the accumulation and pressure of the material in the inner cavity of the machine head Increase, under the action of the back pressure of the inner cavity of the machine head, the injection screw is retreated. When the material in the inner cavity of the machine head reaches a certain amount, the injection screw is pushed forward by the hydraulic system to produce an injection effect. This device requires a high hydraulic propulsion force, high power consumption, and complex equipment. The other is an injection molding machine with an axially fixed screw, which can use the extrusion effect of the screw to inject material particles, but the injection pressure generated by the screw extrusion force is relatively low, and it is difficult to complete the complex components. Injection molding.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art and provide an integrated device for extrusion and molding of chemical materials. Chemical materials can be mixed, melted, extruded and injection molded into finished components in the present invention.

Technical scheme of the present invention is summarized as follows:

An integrated extrusion and molding device for chemical materials, including a first motor, a reducer, a coupling, a machine base, a hopper, a heating barrel, a screw, and a head with an inner cavity, the inner cavity of the head It consists of a feed chamber, an intermediate chamber, a discharge chamber and a die. The feed chamber and the discharge chamber are cavities with the characteristics of rotational symmetry. The intermediate chamber is a cylindrical cavity. The front end of the screw An injection piston is provided, and the injection piston is composed of a piston body and a piston head. The piston body is a cylinder, and the piston head is a geometric body with rotational symmetry. A material channel is formed between them, the spiral groove of the screw rod is connected with the inner cavity through the material channel, the rear end of the screw rod is connected with the axial movement shaft provided with a shaft shoulder, and the axial movement shaft is provided with It has a bearing and is connected to the inner hole of the intermediate transmission gear through threads and lock nuts. One end of the intermediate transmission gear is connected to the inner hole of the base through transmission threads, and the other end of the intermediate transmission gear is connected to the inner hole of the machine base through the driving gear. The second motor is connected, and the rear end of the axially moving shaft is connected with the first motor through the shaft coupling and the reducer.

The feed chamber with the characteristics of rotational symmetry can be a cone, or a part of a sphere, or a part of an ellipsoid, and the discharge chamber with the characteristics of a rotational symmetry can be a cone or a part of a sphere , you can also choose a partial ellipsoid.

The piston head with the feature of rotational symmetry can be a cone, a part of a sphere, or a part of an ellipsoid.

A bushing may also be provided on the inner hole of the machine base, and one end of the intermediate transmission gear is connected with the bushing in the inner hole of the machine base through a transmission thread.

The present invention is an integrated device for extrusion and molding of chemical materials, which integrates the two functions of extrusion and injection molding of chemical materials, and can be carried out independently through the injection molding principle of screw extrusion and piston injection. Extrusion operation or injection molding operation, and the process of material mixing, modification, plasticization and injection molding can be completed in the same mechanical equipment at one time, eliminating the need for extrusion and granulation operations for mixing, modification and other purposes. The machine is multi-purpose, the volume of the equipment is reduced, and the cost of the equipment is reduced. Moreover, the processing procedure can be simplified and "integrated processing" can be carried out. Since extrusion and injection molding are synergistic in the extrusion and molding integrated device of chemical materials in the present invention, The invention can provide high injection molding pressure under relatively low power consumption to complete the injection molding operation of various components. Therefore, the invention has the advantages of multi-function, integration, high efficiency and low energy, low cost and wide application range.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic structural view of the injection piston at the front end of the screw of the present invention;

Fig. 3 is a structural schematic diagram of the first head cavity of the present invention;

Fig. 4 is a schematic structural view of the first injection piston of the present invention;

Fig. 5 is the structural representation of the inner cavity of the second type of machine head of the present invention;

Fig. 6 is a schematic structural view of the second injection piston of the present invention;

Fig. 7 is the structure schematic diagram of the inner chamber of the third kind of machine head of the present invention;

Fig. 8 is a schematic structural view of the third injection piston of the present invention;

Fig. 9 is a schematic structural view of the inner chamber of the fourth type of machine head of the present invention;

Fig. 10 is a schematic structural view of the fourth injection piston of the present invention;

Fig. 11 is a schematic structural view of the inner chamber of the fifth type of handpiece of the present invention;

Fig. 12 is a schematic diagram of the structure of the parts that play the role of injection molding in the present invention.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.

An integrated device for extrusion and molding of chemical materials (see Figure 1), including a first motor 1, a reducer 2, a coupling 3, a machine base 4, a hopper 5, a heating barrel 6, a screw 7, and an inner The machine head 8 (seeing Fig. 2) of chamber 9, the inner cavity 9 of machine head 8 is made up of feeding chamber 10, intermediate chamber 11, discharging chamber 12 and die 13 (seeing Fig. 3), feeding chamber 10 and outlet The material chamber 12 is a chamber with the characteristics of a rotationally symmetrical body, the middle chamber 11 is a cylindrical chamber, the front end of the screw rod 7 is provided with an injection piston 14, and the injection piston 14 is composed of a piston body 16 and a piston head 15 (see Figure 4). The piston body 16 is a cylinder, and the piston head 15 is a geometric body with the characteristics of a rotationally symmetrical body. The material channel 17 is formed between the inner cavity 9 of the machine head 8 and the injection piston 14. The gap between the material channel 17 can be selected from 5 to 500 μm, preferably 20-100 μm, the spiral groove of the screw 7 is connected with the inner cavity 9 through the material channel 17, the rear end of the screw 7 is connected with the axial movement shaft 20 provided with a shaft shoulder, the axial movement shaft 20 is provided with a bearing 19 and Connect with the inner hole of the intermediate transmission gear 21 through the screw thread 23 and the lock nut 24, one end of the intermediate transmission gear 21 is connected with the inner hole of the base 4 through the transmission thread 26 (see Figure 12), and the other end of the intermediate transmission gear 21 is passed through The driving gear 22 is connected with the second motor 25 , and the rear end of the axially moving shaft 20 is connected with the first motor 1 through the coupling 3 and the speed reducer 2 .

The feed chamber 10 with the characteristics of rotational symmetry is a cone (see Figure 11) or part ellipsoid (see Figure 5) or part sphere, and the discharge chamber 12 with the characteristics of rotational symmetry is a cone (see Figure 3, Fig. 5) or part sphere (see Figure 7, Figure 9 and Figure 11) part ellipsoid.

The piston head with the feature of rotational symmetry is a cone (see Figure 4) or a part of a sphere (see Figures 6 and 8) or a part of an ellipsoid (see Figure 10).

A piston head with a cone matches a discharge chamber with a cone, a piston head with a part sphere matches a discharge chamber with a part sphere, a piston head with a part ellipsoid matches a discharge chamber with a part sphere or ellipsoid match.

The inner hole of the support 4 is preferably provided with a bushing, and one end of the intermediate transmission gear 21 is connected with the bushing of the inner hole of the support 4 through a transmission thread 26 .

During the extrusion operation, add materials into the hopper 5, the first motor 1 drives the screw 7 through the reducer 2 and the coupling 3, and the materials are mixed, melted and plasticized under the screw extrusion and conveying action of the screw 7 , and then pass through the die 13 for extrusion.

During the injection molding operation, the mold is first connected to the front end of the machine head 8, and the material is added into the hopper 5, and the material is sent into the inner cavity 9 of the machine head 8 through the spiral groove and the material channel 17 under the extrusion of the screw 7 Inside, after reaching the volume required for injection molding, under the drive of the second motor 25, the driving gear 22 drives the intermediate transmission gear 21, and the intermediate transmission gear 21 passes through the transmission thread 26, and drives the shaft through the bearing 19 and the lock nut 24. The axial movement shaft 20 moves axially in the machine base 4, and the axial movement shaft 20 pushes the screw rod 7 and the injection piston 14 connected to its front end to move axially, so that the injection piston 14 pushes the melt accumulated in the inner cavity 9 to pass through The die 13 is injected into the mold to complete the injection molding operation.

Claims (4)

1. a chemical material extrudes and the moulding integrating device, comprise first motor, decelerator, shaft coupling, support, hopper, the heating machine barrel, screw rod and the head that has inner chamber, the inner chamber that it is characterized in that described head is by feed cavity, intermediate cavity, discharging chamber and mouthful mould are formed, described feed cavity and discharging chamber are the cavity with revolution symmetric body feature, described intermediate cavity is the column type cavity, the front end of described screw rod is provided with injection ram, described injection ram is made up of piston body and piston head, described piston body is a cylinder, described piston head is the solid with revolution symmetric body feature, constitute material channel between the inner chamber of described head and described injection ram, the helicla flute of described screw rod is connected with described inner chamber by described material channel, the rear end of described screw rod is connected with the axle that moves axially that is provided with the shaft shoulder, the described axle that moves axially is provided with bearing and is connected with the endoporus of intermediate drive gear with locking nut by screw thread, one end of described intermediate drive gear is connected with the endoporus of described support by motion thread, and the other end of described intermediate drive gear is connected with second motor by driving gear.

2. a kind of chemical material according to claim 1 extrudes and the moulding integrating device, it is characterized in that described feed cavity with revolution symmetric body feature is cone or part spheroid or part spheroid, described discharging chamber with revolution symmetric body feature is cone or part spheroid or part spheroid.

3. extruding and the moulding integrating device of a kind of chemical material according to claim 1 is characterized in that described piston head with revolution symmetric body feature is cone or part spheroid or part spheroid.

4. extruding and the moulding integrating device of a kind of chemical material according to claim 1 is characterized in that the endoporus of described support is provided with lining, and an end of described intermediate drive gear is connected by the lining of motion thread with the endoporus of described support.

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