CN223302157U - Double-screw high-speed injection molding machine - Google Patents

Abstract

The utility model discloses a double-screw high-speed injection molding machine which comprises an injection molding machine body and a mounting table, wherein a feed hopper is fixedly arranged on the rear side of the upper end of the injection molding machine body in a penetrating manner, a thermoplastic cavity is formed in the middle of the injection molding machine body, a discharge cavity is fixedly arranged at the front end of the thermoplastic cavity in a communicating manner, an injection molding opening is fixedly arranged at the lower end of the discharge cavity in a communicating manner, a supporting table is fixedly arranged at the rear end of the mounting table, a driving motor is fixedly arranged at the upper end of the supporting table, a first extrusion screw is fixedly arranged at a transmission shaft part at the front end of the driving motor, a first transmission gear is fixedly arranged on the outer curved surface of the rear end of the first extrusion screw, a second transmission gear is connected with the side end of the first transmission gear in a meshed manner, and a second extrusion screw is fixedly arranged in the middle of the second transmission gear. The utility model realizes double screw extrusion injection molding of plastic materials and improves the heating efficiency of the thermoplastic cavity through the preheating cavity.

Description

Double-screw high-speed injection molding machine

Technical Field

The utility model relates to the technical field of plastic processing machinery, in particular to a double-screw high-speed injection molding machine.

Background

An injection molding machine is a main molding apparatus for molding thermoplastic or thermosetting plastic into plastic products of various shapes using a plastic molding die. The plastic material is heated, high pressure is applied to molten plastic, the molten plastic is ejected and fills the mold cavity, and various plastic products are produced through cooling and shaping.

The injection molding machine has the main functions of producing plastic products, and is a key device for producing various plastic products, such as plastic bottles, plastic containers, plastic toys and the like. It is produced into various shapes of plastic products by injecting molten plastic into a mold and cooling it to shape. The injection molding machine has the advantages of high precision, high efficiency, high consistency and the like, and can greatly improve the production efficiency of plastic products. Meanwhile, the injection molding machine can realize automatic production, reduce manual operation and reduce production cost. The adaptability is strong, and the injection molding machine can adapt to the production requirements of plastic products with different types and different shapes. Through changing the mould, the injection molding machine can easily produce plastic products with different shapes and different sizes, thereby meeting the diversified demands of the market.

However, in the prior art, when the injection molding machine is actually used, the traditional injection molding machine mostly adopts a single screw design, and although the production requirement of common plastic products can be met, when the injection molding machine is used for processing high-viscosity materials and products with high filling rate or complex structures, the problems of uneven fusion and low injection speed exist in the single screw design.

Disclosure of utility model

The utility model aims to provide a double-screw high-speed injection molding machine, which aims to solve the problems that the conventional injection molding machine proposed in the background art mostly adopts a single-screw design, and can meet the production requirements of common plastic products, but when high-viscosity materials are processed, products with high filling rate or complex structures are required to be processed, the single-screw injection molding machine has uneven fusion and low injection speed.

In order to achieve the aim, the utility model provides the following technical scheme that the injection molding machine comprises an injection molding machine body and an installation table;

The rear side of the upper end of the injection molding machine body is fixedly provided with a feeding hopper in a penetrating manner, the middle part of the injection molding machine body is provided with a thermoplastic cavity, the front end of the thermoplastic cavity is fixedly provided with a discharging cavity, the lower end of the discharging cavity is fixedly provided with an injection molding opening, the rear end of the mounting table is fixedly provided with a supporting table, the upper end of the supporting table is fixedly provided with a driving motor, the front end transmission shaft part of the driving motor is fixedly provided with a first extrusion screw, the outer curved surface of the rear end of the first extrusion screw is fixedly provided with a first transmission gear, the side end of the first transmission gear is in meshed connection with a second transmission gear, the middle part of the second transmission gear is fixedly provided with a second extrusion screw, and the outer curved surfaces of the first extrusion screw and the second extrusion screw are respectively fixedly provided with a spiral extrusion blade for shearing, compressing and extruding plastic materials forwards;

The front end of the injection molding machine body is internally provided with a preheating cavity, the upper end and the lower end of the preheating cavity are respectively and fixedly provided with a water inlet and a water outlet, the middle part of the upper end of the preheating cavity is fixedly provided with a temperature sensor for monitoring the stable temperature in the preheating cavity in a penetrating way, the front end of the injection molding machine body is fixedly provided with a stirring motor, the stirring motor comprises a stirring motor, a stirring shaft, a preheating cavity, a stirring rod, a stirring motor, a first synchronous wheel, a second synchronous wheel, a stirring shaft, a stirring rod, a stirring shaft and a stirring rod.

Preferably, the injection molding machine body penetrates through the middle part of the upper end of the mounting table, and the number of the mounting tables is two, and the two mounting tables are symmetrically distributed at two side ends of the injection molding machine body respectively.

Preferably, fixing holes are formed in the four corners of the bottom of the mounting table in a penetrating mode, and the fixing holes are symmetrically distributed in the four corners of the bottom of the mounting table.

Preferably, the feeding hopper penetrates downwards into the thermoplastic cavity, and an electric heating wire for heating and melting the plastic material is fixedly arranged on the inner wall of the thermoplastic cavity in an embedded mode.

Preferably, the front end and the rear end of the first extrusion screw and the second extrusion screw are respectively connected with the inner walls of the discharging cavity and the thermoplastic cavity through rotating shafts, and the spiral extrusion edges are mutually staggered.

Preferably, the outer ends of the water inlet and the water outlet are respectively provided with a switch valve.

Preferably, the stirring shaft penetrates through the inner wall of the preheating cavity through the rotating shaft, and a plurality of stirring rods are arranged and are respectively symmetrically distributed on the outer curved surface of the stirring shaft in sequence.

Compared with the prior art, the utility model has the beneficial effects that:

1. When the plastic material is discharged into the thermoplastic cavity, external hot water is discharged into the preheating cavity through the water inlet, and when the external hot water is discharged into the preheating cavity, the external part of the thermoplastic cavity is preheated through the preheating cavity, and the temperature inside the preheating cavity is monitored through the temperature sensor, so that the heating efficiency of the thermoplastic cavity is improved through the preheating cavity while double-screw extrusion injection molding of the plastic material is realized;

2. The stirring motor is controlled to be started, when the stirring motor is started, the first synchronous wheel is driven to rotate, when the first synchronous wheel rotates, the second synchronous wheel is driven to rotate through synchronous belt transmission, when the second synchronous wheel rotates, the stirring shaft is driven to rotate, when the stirring shaft rotates, the stirring rod is driven to rotate, and when the stirring rod rotates, the heating water in the preheating cavity is driven to stir and flow, and the preheating efficiency of the heating cavity to the thermoplastic cavity is further improved through the stirring and flowing of the heating water.

Drawings

FIG. 1 is a schematic diagram of the whole structure of a twin-screw high-speed injection molding machine;

FIG. 2 is a schematic diagram of the whole structure of a twin-screw high-speed injection molding machine according to the second embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of the whole structure of a twin-screw high-speed injection molding machine;

fig. 4 is a schematic cross-sectional view of the whole structure of the double-screw high-speed injection molding machine.

The device comprises an injection molding machine body, a mounting table, a fixing hole, a feeding hopper, a thermoplastic cavity, a discharging cavity, a 7 injection port, a 8 supporting table, a 9 driving motor, a 10 first extrusion screw, a 11 second transmission gear, a 12 second extrusion screw, a 13 spiral extrusion blade, a 14 preheating cavity, a 15, a water inlet, a 16, a water outlet, a 17 temperature sensor, a 18 stirring motor, a 19 first synchronous wheel, a 20 second synchronous wheel, a 21 stirring shaft, a 22 stirring rod, a 23 first transmission gear.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the utility model provides a technical scheme of a double-screw high-speed injection molding machine, which comprises an injection molding machine body 1 and a mounting table 2, wherein the injection molding machine body 1 is fixedly arranged in the middle of the upper end of the mounting table 2 in a penetrating manner, two mounting tables 2 are symmetrically distributed at two side ends of the injection molding machine body 1 respectively, fixing holes 3 are formed in four corners of the bottom of the mounting table 2 in a penetrating manner, and the fixing holes 3 are symmetrically distributed at four corners of the bottom of the mounting table 2 respectively, so that the mounting table 2 is fixedly installed through the cooperation of the fixing holes 3 and mounting bolts;

The rear side of the upper end of the injection molding machine body 1 is fixedly provided with a feeding hopper 4 in a penetrating manner, the middle part of the injection molding machine body 1 is provided with a thermoplastic cavity 5, the feeding hopper 4 downwards penetrates into the thermoplastic cavity 5, the inner wall of the thermoplastic cavity 5 is fixedly provided with an electric heating wire for heating and melting plastic materials in an embedded manner, the front end of the thermoplastic cavity 5 is fixedly provided with a discharging cavity 6 in a communicating manner, the lower end of the discharging cavity 6 is fixedly provided with an injection port 7 in a communicating manner, the rear end of the mounting table 2 is fixedly provided with a supporting table 8, the upper end of the supporting table 8 is fixedly provided with a driving motor 9, the front end transmission shaft part of the driving motor 9 is fixedly provided with a first extrusion screw 10, the outer curved surface of the rear end of the first extrusion screw 10 is fixedly provided with a first transmission gear 23, the side end of the first transmission gear 23 is in meshed connection with a second transmission gear 11, the middle part of the second transmission gear 11 is fixedly provided with a second extrusion screw 12, the front end and the rear end of the first extrusion screw 10 and the second extrusion screw 12 are respectively connected to the inner wall of the discharging cavity 6 and the thermoplastic cavity 5 in a rotating manner through a rotating shaft, the outer curved surfaces of the first extrusion screw 10 and the second extrusion screw 12 are respectively fixedly provided with spiral extrusion blades 13 for shearing, compressing and forward extrusion and extruding the plastic materials, and the spiral blades 13 are distributed alternately;

The inside preheating chamber 14 that has seted up of injection molding machine body 1 front end, preheating chamber 14 upper and lower extreme intercommunication fixed mounting has water inlet 15 and delivery port 16 respectively, and water inlet 15 and delivery port 16 outer end are installed respectively and are provided with the ooff valve, preheating chamber 14 upper end middle part runs through fixed mounting and is used for monitoring preheating chamber 14 inside steady temperature's temperature sensor 17, injection molding machine body 1 front end fixed mounting has agitator motor 18, agitator motor 18 front end transmission shaft part fixed mounting has first synchronizing wheel 19 in proper order, first synchronizing wheel 19 outer end is connected with second synchronizing wheel 20 through the synchronous belt drive, second synchronizing wheel 20 middle part fixed mounting has (mixing) shaft 21, and (mixing) shaft 21 runs through to preheating chamber 14 inner wall through the pivot, (mixing) shaft 21 outer curved surface fixed mounting has the puddler 22 that is used for carrying out the stirring to preheating chamber 14, and the puddler 22 quantity has a plurality of, symmetrically distributed in proper order with (mixing) shaft 21 outer curved surface respectively.

When the plastic material injection molding machine is used, plastic materials to be injected are discharged into a thermoplastic cavity 5 through a feed hopper 4, when the plastic materials are discharged into the thermoplastic cavity 5, an electric heating wire fixedly installed on the inner wall of the thermoplastic cavity 5 is embedded and controlled to be started, when the electric heating wire is started, the plastic materials are heated and melted through the thermoplastic cavity 5, when the plastic materials are heated and melted, a driving motor 9 is controlled to be started, a first extrusion screw 10 is driven to rotate when the driving motor 9 is started, a first transmission gear 23 is driven to rotate when the first extrusion screw 10 is driven to rotate, a second transmission gear 11 is driven to rotate in a meshed mode when the first transmission gear 23 is rotated, a second extrusion screw 12 is driven to rotate when the second transmission gear 11 is rotated, the heated plastic materials are sheared, compressed and extruded forwards through a spiral extrusion blade 13 when the first extrusion screw 10 and the second extrusion screw 12 are rotated, and the extruded plastic materials are injected through a discharge cavity 6 and an injection molding port 7;

When the plastic material is discharged into the thermoplastic cavity 5, external hot water is discharged into the preheating cavity 14 through the water inlet 15, and when the external hot water is discharged into the preheating cavity 14, the outside of the thermoplastic cavity 5 is preheated through the preheating cavity 14, and the temperature inside the preheating cavity 14 is monitored through the temperature sensor 17, so that the heating efficiency of the thermoplastic cavity 5 is improved through the preheating cavity 14 while double-screw extrusion injection molding of the plastic material is realized;

Simultaneously, through control start agitator motor 18, when agitator motor 18 opened, can drive first synchronizing wheel 19 and rotate, when first synchronizing wheel 19 rotates, can drive second synchronizing wheel 20 through the hold-in range transmission and rotate, when second synchronizing wheel 20 rotates, can drive (mixing) shaft 21 and rotate, when (mixing) shaft 21 rotates, can drive puddler 22 and rotate, when puddler 22 rotates, can drive the inside heating water of preheating chamber 14 and stir and flow, further promote the preheating efficiency of preheating chamber 14 to thermoplastic chamber 5 through the stirring flow of heating water.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The double-screw high-speed injection molding machine is characterized by comprising an injection molding machine body (1) and a mounting table (2);

The plastic extruding machine comprises an injection molding machine body (1), wherein a feeding hopper (4) is fixedly installed on the rear side of the upper end of the injection molding machine body (1), a thermoplastic cavity (5) is formed in the middle of the injection molding machine body (1), a discharging cavity (6) is fixedly installed at the front end of the thermoplastic cavity (5), an injection molding port (7) is fixedly installed at the lower end of the discharging cavity (6), a supporting table (8) is fixedly installed at the rear end of the mounting table (2), a driving motor (9) is fixedly installed at the upper end of the supporting table (8), a first extruding screw (10) is fixedly installed at the front end transmission shaft part of the driving motor (9), a first transmission gear (23) is fixedly installed on the outer curved surface of the rear end of the first extruding screw (10), a second transmission gear (11) is connected with the side end of the first transmission gear in a meshed mode, a second extruding screw (12) is fixedly installed at the middle of the second extruding screw (11), and spiral extruding blades (13) for shearing, compressing and extruding plastic materials forwards are fixedly installed on the outer curved surfaces of the first extruding screw (10) respectively;

The novel injection molding machine is characterized in that a preheating cavity (14) is formed in the front end of the injection molding machine body (1), a water inlet (15) and a water outlet (16) are fixedly installed at the upper end and the lower end of the preheating cavity (14) in a communicating mode respectively, a temperature sensor (17) for monitoring the internal stable temperature of the preheating cavity (14) is fixedly installed in the middle of the upper end of the preheating cavity (14), a stirring motor (18) is fixedly installed at the front end of the injection molding machine body (1), a first synchronous wheel (19) is fixedly installed at the front end transmission shaft part of the stirring motor (18) in sequence, a second synchronous wheel (20) is connected to the outer end of the first synchronous wheel (19) through synchronous belt transmission, a stirring shaft (21) is fixedly installed at the middle of the second synchronous wheel (20), and a stirring rod (22) for stirring the preheating cavity (14) is fixedly installed on the outer curved surface of the stirring shaft (21).

2. The double-screw high-speed injection molding machine of claim 1, wherein the injection molding machine body (1) is fixedly installed in the middle of the upper end of the installation table (2) in a penetrating manner, and the number of the installation tables (2) is two and is symmetrically distributed at two side ends of the injection molding machine body (1).

3. The double-screw high-speed injection molding machine of claim 2, wherein fixing holes (3) are formed in four corners of the bottom of the mounting table (2) in a penetrating manner, and the fixing holes (3) are symmetrically distributed in four corners of the bottom of the mounting table (2).

4. The double-screw high-speed injection molding machine according to claim 3, wherein the feed hopper (4) penetrates downwards into the thermoplastic cavity (5), and an electric heating wire for heating and melting plastic materials is fixedly embedded in the inner wall of the thermoplastic cavity (5).

5. The double-screw high-speed injection molding machine according to claim 4, wherein the front end and the rear end of the first extrusion screw (10) and the second extrusion screw (12) are respectively connected to the inner walls of the discharging cavity (6) and the thermoplastic cavity (5) through rotating shafts in a rotating mode, and the spiral extrusion blades (13) are distributed in a staggered mode.

6. The double-screw high-speed injection molding machine according to claim 5, wherein the outer ends of the water inlet (15) and the water outlet (16) are respectively provided with a switch valve.

7. The double-screw high-speed injection molding machine of claim 6, wherein the stirring shaft (21) penetrates through the inner wall of the preheating cavity (14) through a rotating shaft, and a plurality of stirring rods (22) are sequentially and symmetrically distributed according to the outer curved surface of the stirring shaft (21).