CN219114625U

CN219114625U - Nitrogen injection molding machine

Info

Publication number: CN219114625U
Application number: CN202223575900.8U
Authority: CN
Inventors: 范家胜
Original assignee: Moldfactory Taicang Co ltd
Current assignee: Moldfactory Taicang Co ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-06-02
Anticipated expiration: 2032-12-31

Abstract

The utility model relates to the technical field of injection molding machines, in particular to a nitrogen injection molding machine, which comprises an injection molding box, wherein a screw extruder is arranged on the side edge of the injection molding box, a feed hopper is arranged between the injection molding box and the upper part of the screw extruder, a blanking pipe is fixedly arranged at the lower end part of the feed hopper, a connecting box is fixedly arranged at the upper end part of the injection molding box, a motor is fixedly arranged at the side end part of the connecting box, and a stirring rod is fixedly arranged at the end part of an output shaft of the motor. According to the utility model, the nitrogen compressor is arranged in the injection molding box, the nitrogen compressor firstly transmits nitrogen into the blanking pipe through the nitrogen pipe, the nitrogen rapidly enters the feed hopper, the nitrogen fully contacts with raw materials, the raw materials subsequently rapidly enter the screw extruder, the screw extruder extrudes air in the raw materials, the air in the raw materials is removed by utilizing the characteristic of inertia of the nitrogen, and the unqualified phenomenon of yellowing of products is effectively avoided after the raw materials are burnt at high temperature.

Description

Nitrogen injection molding machine

Technical Field

The utility model relates to the technical field of injection molding machines, in particular to a nitrogen injection molding machine.

Background

The modern industry rapidly develops, wherein the plastic industry has a broad development prospect along with the technical innovation of the petrochemical industry, and plastic products occupy important positions in national production and life. The automobile lamp shell is basically formed by plastic injection molding, and plastic raw materials are heated by the injection molding machine through the thrust of a screw rod, so that the plastic is melted in a flowing state and injected into a closed mold core. And under the drive of a screw rod of the injection machine, the injection system of the nozzle and the mould enters a mould cavity, and the product is obtained after drying and shaping. The plastic particles are added into the screw extruder through a hopper, and the plastic entering the screw extruder is dried, but the plastic is decomposed, or the added stabilizer, the charging agent and the like are prevented from being decomposed, so that gas is generated; when powder is used for molding or a large amount of powder is mixed into the particles for molding, air is easily involved, a large amount of heat is generated in the extrusion process of the screw machine, and the oxygen in the air combusts the fuel in the raw materials easily, so that the molded product is yellow.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a nitrogen injection molding machine.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a nitrogen gas injection molding machine, includes the case of moulding plastics, the screw extruder is installed to the side of moulding plastics the case, install the feeder hopper between injection molding case and the screw extruder top, the lower tip fixed mounting of feeder hopper has the unloading pipe, the upper end fixed mounting of moulding plastics the case has the joint box, the side tip fixed mounting of joint box has the motor, the tip fixed mounting of motor output shaft has the stirring rod, the circumference surface fixed mounting of stirring rod has the screw band, two at least gas vents have been seted up on the surface of screw band, stirring rod and screw band rotate and install in the unloading pipe.

As a preferable technical scheme of the utility model, the upper end part of the screw extruder is fixedly provided with the corner pipe, and the same feeding pipe is fixedly arranged between the discharging pipe and the corner pipe.

As a preferable technical scheme of the utility model, a nitrogen pipe is fixedly arranged between the blanking pipe and the connecting box, and the same screw is fixedly arranged between the injection molding box and the screw extruder.

Compared with the prior art, the utility model has the following advantages:

1. the screw extruder comprises a screw extruder body, a stirring rod, a nitrogen guide pipe, a stirring rod and a stirring rod.

2. The nitrogen compressor is arranged in the injection molding box, nitrogen is firstly conveyed into the blanking pipe through the nitrogen pipe, the nitrogen is quickly fed into the feeding hopper, the nitrogen is fully contacted with the raw material, the raw material is quickly fed into the screw extruder, the screw extruder extrudes air in the raw material, the air in the raw material is removed by utilizing the inert characteristic of the nitrogen, and the unqualified phenomenon of yellowing of the product is effectively avoided after the raw material burns at high temperature.

Drawings

FIG. 1 is a schematic view of the structure of an injection molding box of the present utility model;

FIG. 2 is a schematic view of the structure of the screw extruder of the present utility model;

FIG. 3 is a schematic view of the structure of the feed hopper of the present utility model;

FIG. 4 is a schematic structural view of a stirring rod according to the present utility model.

Wherein: 1. an injection molding box; 11. a connection box; 12. a motor; 13. a stirring rod; 14. a threaded belt; 15. an exhaust port; 16. discharging pipes; 17. a feed hopper; 18. a feed pipe; 19. a corner tube; 2. a screw extruder; 21. a screw; 22. a nitrogen pipe.

Detailed Description

As shown in fig. 1, 2, 3 and 4, a nitrogen injection molding machine comprises an injection molding box 1, a screw extruder 2 is mounted on the side edge of the injection molding box 1, a feed hopper 17 is mounted between the injection molding box 1 and the upper side of the screw extruder 2, a blanking pipe 16 is fixedly mounted at the lower end part of the feed hopper 17, a connecting box 11 is fixedly mounted at the upper end part of the injection molding box 1, a motor 12 is fixedly mounted at the side end part of the connecting box 11, a stirring rod 13 is fixedly mounted at the end part of the output shaft of the motor 12, a threaded belt 14 is fixedly mounted on the circumferential surface of the stirring rod 13, at least two exhaust ports 15 are formed on the surface of the threaded belt 14, the stirring rod 13 and the threaded belt 14 are rotatably mounted in the blanking pipe 16, nitrogen enters the plurality of threaded belts 14 through the stirring rod 13, the plurality of exhaust ports 15 formed through the threaded belt 14 are discharged, and when raw materials enter the interior of the feed hopper 17, the motor 12 is operated, the motor 12 is operated and drives the stirring rod 13 to rotate through the output shaft, the stirring rod 13 rotates and drives a plurality of threaded belts 14 to rotate, the threaded belts 14 rotate to stir raw materials, meanwhile, the threaded belts 14 stir nitrogen into the raw materials, raw material particles or powder are continuously stirred in a hopper, sufficient blanking of the raw materials between a blanking pipe 16 and a feeding pipe 18 is ensured, the raw materials of the screw extruder 2 are uniformly fed, non-uniformity of molten liquid flowing to a mold quantity caused by material shortage is avoided, the condition that the quality of injection molding pieces is unqualified is brought, the stirring rod 13 and a nitrogen guide pipe are integrally structured, in order to enable the hopper to store more raw materials, the occupied space of the nitrogen guide pipe and the stirring rod 13 is reduced, the hollow pipe body is adopted by the stirring rod 13, the threaded belts 14 are welded outside, nitrogen holes are formed in the lower ends of the threaded belts 14, and nitrogen is output during stirring.

The upper end of the screw extruder 2 is fixedly provided with a corner pipe 19, the same feed pipe 18 is fixedly arranged between the feed pipe 16 and the corner pipe 19, a nitrogen pipe 22 is fixedly arranged between the feed pipe 16 and the connecting box 11, nitrogen rapidly enters into the feed hopper 17, the nitrogen fully contacts with the raw materials, the raw materials subsequently rapidly enter into the screw extruder 2, the screw extruder 2 extrudes air in the raw materials, the air in the raw materials is removed by utilizing the inert characteristic of the nitrogen, the unqualified phenomenon of yellowing of products is effectively avoided after the raw materials are combusted at high temperature, and the same screw 21 is fixedly arranged between the injection molding box 1 and the screw extruder 2.

The working process of the utility model is as follows:

firstly, the user pours the raw materials into the feeder hopper 17 inside, injection molding case 1 internally mounted has nitrogen compressor, nitrogen compressor is first through nitrogen pipe 22 with nitrogen gas transport to the unloading pipe 16 inside, nitrogen gas enters into the feeder hopper 17 inside fast, nitrogen gas fully contacts with the raw materials, the raw materials is then inside entering into screw extruder 2 fast, screw extruder 2 extrudes the air in the raw materials, utilize the inert characteristic of nitrogen gas, get rid of the air in the raw materials, after the high temperature combustion of raw materials, effectively avoid the disqualification phenomenon that the product is yellowing.

The second step, nitrogen compressor carries nitrogen gas to stirring rod 13 inside through the pipeline, nitrogen gas enters into a plurality of screw bands 14 through stirring rod 13, be discharged through a plurality of gas vents 15 that screw extruder 2 raw materials offered through screw band 14, when the raw materials entered into the feeder hopper 17 inside, motor 12 operation drives stirring rod 13 rotation through the output shaft, stirring rod 13 rotation drives a plurality of screw bands 14 rotation, a plurality of screw bands 14 rotation stir the raw materials, simultaneously screw band 14 can stir nitrogen gas in the raw materials, stir raw materials granule or powder constantly in the hopper, ensure the abundant unloading of raw materials between unloading pipe 16 and the inlet pipe 18, make the even pay-off of screw extruder 2 raw materials, avoid the lack of materials to cause the melt to flow to the inhomogeneous of mould volume, take the unqualified condition of injection molding quality, stirring rod 13 and nitrogen pipe integral type structure, in order to make the hopper can deposit more raw materials, reduce nitrogen pipe, stirring rod 13 occupation space, stirring rod 13 adopts hollow tube body, the outside welding screw band 14, the nitrogen gas hole is offered to screw band 14 lower extreme, nitrogen gas hole output in the stirring.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. The utility model provides a nitrogen injection molding machine, includes injection molding case (1), its characterized in that, screw extruder (2) are installed to the side of injection molding case (1), install feeder hopper (17) between injection molding case (1) and screw extruder (2) top, the lower tip fixed mounting of feeder hopper (17) has unloading pipe (16), the upper end fixed mounting of injection molding case (1) has connection box (11), the side end fixed mounting of connection box (11) has motor (12), the tip fixed mounting of motor (12) output shaft has stirring rod (13), the circumference fixed surface of stirring rod (13) installs threaded belt (14), at least two gas vent (15) have been seted up on the surface of threaded belt (14), stirring rod (13) and threaded belt (14) rotate and install in unloading pipe (16).

2. A nitrogen injection moulding machine according to claim 1, characterized in that the upper end of the screw extruder (2) is fixedly fitted with a corner tube (19).

3. A nitrogen injection moulding machine according to claim 1, wherein the same feed pipe (18) is fixedly arranged between the blanking pipe (16) and the corner pipe (19).

4. A nitrogen injection moulding machine according to claim 1, wherein a nitrogen pipe (22) is fixedly arranged between the blanking pipe (16) and the connecting box (11).

5. A nitrogen injection moulding machine according to claim 1, characterized in that the same screw (21) is fixedly mounted between the injection moulding box (1) and the screw extruder (2).