CN217373190U

CN217373190U - Flash backward flow formula gas is assisted and is moulded plastics device

Info

Publication number: CN217373190U
Application number: CN202123284356.7U
Authority: CN
Inventors: 吴锦炎; 宋定国; 孔志勇
Original assignee: Ningbo Zhisheng Technology Co ltd
Current assignee: Ningbo Zhisheng Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-09-06
Anticipated expiration: 2031-12-24

Abstract

The utility model discloses a flash backward flow formula gas-assisted injection molding device, including die body and mould lid, first recess and second recess have been seted up at the top of die body, the bottom inner wall of first recess is provided with gas-assisted subassembly, the bottom inner wall of second recess is provided with the backward flow subassembly, the top of die body just is located and is provided with the film-forming chamber of equidistance distribution between first recess and the second recess, gas-assisted subassembly includes the compressor, the fixed cover of air inlet end of compressor is equipped with first air duct, and the device simple structure, the modern design is convenient for mould plastics a plurality of finished products simultaneously, improves production efficiency, improves the homogeneity of injection moulding raw materials flash, makes the wall thickness of finished product even, improves the quality of product, is convenient for carry out reuse to flash in the film-forming chamber, solves the tradition and waits for the flash to solidify, heats and melts and recycles the problem that consumes the resource, thereby being beneficial to saving resources and being convenient for operation, and the device is suitable for wide popularization.

Description

Flash backward flow formula gas is assisted and is moulded plastics device

Technical Field

The utility model relates to a gas is assisted and is moulded plastics technical field, especially relates to a flash backward flow formula gas is assisted and is moulded plastics device.

Background

Gas-assisted injection molding, also known as gas injection molding, is a new injection molding process. It is one of the most important developments in the injection molding industry since the advent of reciprocating screw injection machines. The principle of the gas-assisted injection molding is that in the pressure maintaining stage of the original injection molding, gas with relatively low pressure is used for replacing resin in a cavity to maintain pressure. The gas-assisted injection molding can be realized by only adding a gas supply device on the existing injection molding machine.

However, when the existing gas-assisted injection molding device is used, the uniformity of flash of injection molding raw materials is poor, the wall thickness of a finished product is uneven, the quality of the product is reduced, the flash of a film forming cavity is not convenient to reuse, the traditional gas-assisted injection molding device waits for the flash to be solidified, the flash is heated and melted and then is utilized next time, resources are consumed, and the device is not convenient to use.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

For solving the technical problem that exists among the background art, the utility model provides a flash backward flow formula gas is assisted and is moulded plastics device, the device simple structure, the modern design, a plurality of finished products of being convenient for mould plastics simultaneously, the production efficiency is improved, the homogeneity of the raw materials flash of moulding plastics is improved, it is even to make the off-the-shelf wall thickness, the quality of product is improved, be convenient for carry out reuse to the flash in film-forming chamber, it solidifies to solve the tradition and wait for the flash, the heating is melted and is recycled the problem that consumes the resource, and then be favorable to resources are saved, and the operation of being convenient for, this device is fit for extensively promoting.

(II) technical scheme

The utility model provides a flash backward flow formula gas is assisted and is moulded plastics device, including die body and mould lid, first recess and second recess have been seted up at the top of die body, the bottom inner wall of first recess is provided with the gas and assists the subassembly, the bottom inner wall of second recess is provided with the backward flow subassembly, the top of die body just is located and is provided with the filming chamber that the equidistance distributes between first recess and the second recess;

the gas-assisted assembly comprises a compressor, the fixed cover of air inlet of compressor is equipped with first air duct, the output fixedly connected with air deflector of compressor, the fixed cover of exhaust end of air deflector is equipped with second air duct and third air duct, the exhaust end of second air duct extends to left side film-forming cavity, the second air duct is located the first nozzle of one end fixedly connected with of left side film-forming cavity, the exhaust end of third air duct extends to right side film-forming cavity, the one end fixedly connected with second nozzle that the third air duct is located right side film-forming cavity.

Preferably, the air inlet end of the first air duct extends out of the die body, and the outer wall of one end of the first air duct extending out of the die body is provided with a first electric valve.

Preferably, the backflow assembly comprises first flow guide pipes distributed at equal intervals, the feeding ends of the first flow guide pipes are respectively connected with one side, close to the film forming cavity, of the film forming cavity, the inner wall of the bottom of the second groove is fixedly connected with the heating box, the inner wall of the bottom of the heating box is fixedly connected with the overflow box, the discharging ends of the first flow guide pipes are connected with the feeding end of the overflow box, and the discharging ends of the two sides of the overflow box are respectively fixedly connected with the second flow guide pipes and the third flow guide pipes.

Preferably, the top of the first flow guide pipe is fixedly connected with a second electric valve, and a third groove for placing the first flow guide pipe and the second electric valve is formed in the top of the die body and the side, close to the film forming cavity, of the die body.

Preferably, one side of the film forming cavity, which is far away from the overflow box, is fixedly connected with a feeding pipe, and the discharge ends of the second flow guide pipe and the third flow guide pipe are respectively connected with one side, which is far away from the feeding pipe, of the film forming cavity.

Preferably, the top of the overflow box is provided with a fourth air duct, an air inlet end of the fourth air duct extends out of the shell cover, and a fourth electric valve is fixedly connected to the outer wall of one end, located outside the shell cover, of the fourth air duct.

Preferably, the second air duct and the third air duct are fixedly connected with a third electric valve on the outer wall of one end close to the overflow box, and the first electric valve, the second electric valve, the third electric valve, the fourth electric valve, the compressor and the heating box are electrically connected with the controller.

Compared with the prior art, the above technical scheme of the utility model following profitable technological effect has:

1. the device is convenient for simultaneously mould plastics a plurality of finished products through being provided with a plurality of film forming chamber, improves production efficiency, and through setting up first nozzle, second nozzle respectively with first honeycomb duct in opposition position, improves the homogeneity of the raw materials flash of moulding plastics, makes the off-the-shelf wall thickness even, improves the quality of product.

2. The device gets into second honeycomb duct and third honeycomb duct through the raw materials of moulding plastics that promotes in the flash case, gets into in the feed pipe through second honeycomb duct and third honeycomb duct, is convenient for carry out reuse to the flash in film-forming chamber, solves the tradition and waits for the flash to solidify, and the heating melts and recycles the problem that consumes the resource, and then is favorable to resources are saved, and is convenient for operate.

To sum up, the device simple structure, the modern design is convenient for mould plastics a plurality of finished products simultaneously, improves production efficiency, improves the homogeneity of the raw materials flash of moulding plastics, makes the wall thickness of finished product even, improves the quality of product, is convenient for carry out reuse to the flash in film-forming chamber, solves the tradition and waits for the flash to solidify, and the heating is melted and is recycled the problem that consumes the resource, and then is favorable to resources are saved, and the operation of being convenient for, this device is fit for extensively promoting.

Drawings

Fig. 1 is the utility model provides a flash backward flow formula gas-assisted injection molding device's overall structure schematic diagram.

Fig. 2 is the utility model provides a flash backward flow formula gas-assisted injection molding device's backward flow subassembly schematic structure.

Fig. 3 is the utility model provides a subassembly structural schematic is assisted to flash backward flow formula gas-assisted injection molding device's gas.

Reference numerals; 1. a mold body; 2. a mold cover; 3. a fourth electrically operated valve; 4. a fourth gas-guide tube; 5. a feed pipe; 6. a first air duct; 7. a first electrically operated valve; 8. a reflow assembly; 801. a material overflowing box; 802. a heating box; 803. a first draft tube; 804. a third electrically operated valve; 805. a second draft tube; 806. a second electrically operated valve; 807. a third draft tube; 9. a gas-assisted assembly; 901. a compressor; 902. a gas guide plate; 903. a third air duct; 904. a second nozzle; 905. a first nozzle; 906. a second airway tube; 10. a first groove; 11. a film forming cavity; 12. a second groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-3, the flash backflow type gas-assisted injection molding device provided by the present invention comprises a mold body 1 and a mold cover 2, wherein a first groove 10 and a second groove 12 are formed at the top of the mold body 1, a gas-assisted assembly 9 and a backflow assembly 8 are conveniently installed through the first groove 10 and the second groove 12, the inner wall of the bottom of the first groove 10 is provided with the gas-assisted assembly 9, a film forming cavity 11 is formed at the top of the mold body 1 and located between the first groove 10 and the second groove 12, the film forming cavity 11 is equidistantly distributed, the gas-assisted assembly 9 comprises a compressor 901, an air inlet end of the compressor 901 is fixedly sleeved with a first air duct 6, a first electric valve 7 is opened to enable external nitrogen to enter the compressor 901 along the first air duct 6, an output end of the compressor 901 is fixedly connected with an air guide plate 902, an air outlet end of the air guide plate is fixedly sleeved with a second air duct 906 and a third air duct 903, an air outlet end of the second air duct 906 extends into the film forming cavity 11 at the left side, one end of the second air duct 906, which is positioned in the left film forming cavity 11, is fixedly connected with a first nozzle 905, the exhaust end of the third air duct 903 extends into the right film forming cavity 11, one end of the third air duct 903, which is positioned in the right film forming cavity 11, is fixedly connected with a second nozzle 904, the compressor 901 discharges the compressed air into the air guide plate 902, the compressed air is discharged into the second air duct 906 and the third air duct 903 through the air guide plate 902, and then enters the first nozzle 905 and the second nozzle 904 through the second air duct 906 and the third air duct 903, the air inlet end of the first air duct 6 extends out of the mold body 1, the outer wall of one end of the first air duct 6, which extends out of the mold body 1, is provided with a first electric valve 7, a plurality of film forming cavities 11 are arranged, so that a plurality of finished products can be simultaneously injection-molded, the production efficiency is improved, and the first nozzle 905 and the second nozzle 904 are respectively arranged at opposite positions with the first guide pipe 803, so that the uniformity of injection molding raw material overflow is improved, the wall thickness of the finished product is uniform, and the quality of the product is improved.

The inner wall of the bottom of the second groove 12 is provided with a backflow component 8, the backflow component 8 comprises first flow guide pipes 803 distributed at equal intervals, the tops of the first flow guide pipes 803 are fixedly connected with second electric valves 806, the top of the die body 1 and one side, close to each other, of the film forming cavity 11 are provided with third grooves for placing the first flow guide pipes 803 and the second electric valves 806, so that the first flow guide pipes 803 and the second electric valves 806 can be conveniently installed, the feed ends of the first flow guide pipes 803 are respectively connected with one side, close to each other, of the film forming cavity 11, the inner wall of the bottom of the second groove 12 is fixedly connected with a heating box 802, the inner wall of the bottom of the heating box 802 is fixedly connected with a flash box 801, the discharge ends of the first flow guide pipes 803 are connected with the feed ends of the flash box 801, the second electric valves 806 are opened, high-pressure gas pushes injection molding raw materials into the first flow guide pipes 803 and enters the flash box 801 through the first guide pipes, the discharge ends of the two sides 807 of the flash box 801 are respectively and fixedly connected with second flow guide pipes 805 and third flow guide pipes, the side of the film forming cavity 11 far away from the overflow box 801 is fixedly connected with a feeding pipe 5, the discharging end of a second guiding pipe 805 and the discharging end of a third guiding pipe 807 are respectively connected with the side far away from the feeding pipe 5, the top of the overflow box 801 is provided with a fourth air duct 4, the air inlet end of the fourth air duct 4 extends to the outside of the shell cover, the outer wall of one end of the fourth air duct 4 positioned outside the shell cover is fixedly connected with a fourth electric valve 3, the outer walls of one ends of the second air duct 906 and the third air duct 903 close to the overflow box 801 are fixedly connected with a third electric valve 804, the first electric valve 7, the second electric valve 806, the third electric valve 804, the fourth electric valve 3, the compressor 901 and the heating box 802 are electrically connected with a controller, and the injection molding raw materials in the overflow box 801 are pushed to enter the second guiding pipe 805 and the third guiding pipe 807 and enter the feeding pipe 5 through the second guiding pipe 805 and the third guiding pipe 807, the flash of the film forming cavity 11 is convenient to reuse, the problem that the flash is solidified and heated to be melted and then utilized to consume resources in the traditional method is solved, and therefore, the flash forming cavity is beneficial to saving resources and convenient to operate.

In the utility model, when in use, the injection molding raw material enters the film forming cavity 11 through the feeding pipe 5, the feeding pipe 5 is closed, then the compressor 901 and the first electric valve 7 are started through the controller, the first electric valve 7 is opened, so that the external nitrogen enters the compressor 901 along the first air duct 6, the compression is carried out through the compressor 901, the pressure of the nitrogen is improved, the compression is completed through the compressor 901, the air guide plate 902 is discharged into the second air duct 906 and the third air duct 903, the external nitrogen enters the first nozzle 905 and the second nozzle 904 through the second air duct 906 and the third air duct 903, the high-pressure gas is respectively sprayed into the film forming cavity 11 through the first nozzle 905 and the second nozzle 904, the injection molding raw material in the film forming cavity 11 is processed through gas assistance, through arranging a plurality of film forming cavities 11, a plurality of finished products can be conveniently injected simultaneously, the production efficiency is improved, and the first nozzle 905, the second nozzle 904 are respectively arranged at the opposite position with the first guide pipe 803, the uniformity of the flash of the injection molding raw material is improved, the wall thickness of the finished product is uniform, and the quality of the product is improved.

After the high-pressure gas enters the film forming cavity 11, the controller starts the second electric valve 806, the second electric valve 806 is opened, the high-pressure gas pushes the injection molding raw material into the first guide pipe 803, the injection molding raw material enters the flash tank 801 through the first guide pipe, the controller starts the heating tank 802, the heating tank 802 heats the injection molding raw material entering the flash tank 801, the injection molding raw material is prevented from being solidified, the injection molding raw material flows conveniently, when the injection molding raw material in the flash tank 801 reaches a certain amount, the controller starts the third electric valve 804 and the fourth electric valve 3, the fourth electric valve 3 is opened, the fourth air guide pipe 4 is externally connected with a high-pressure gas circuit, the gas pushes the injection molding raw material in the flash tank 801 to enter the second guide pipe 805 and the third guide pipe 807, the injection molding raw material enters the feeding pipe 5 through the second guide pipe 805 and the third guide pipe 807, the flash of the film forming cavity 11 is convenient to be reused, the problem that the flash is solidified in the prior art is solved, the heating and melting process can be used for resource consumption, thereby being beneficial to resource saving and convenient for operation.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modifications, equivalents, improvements and the like which are made without departing from the spirit and scope of the present invention should be considered within the protection scope of the present invention. Further, it is intended that the appended claims cover all such changes and modifications that fall within the scope and bounds of the appended claims, or equivalents of such scope and bounds.

Claims

1. A flash backflow type gas-assisted injection molding device comprises a mold body (1) and a mold cover (2), and is characterized in that a first groove (10) and a second groove (12) are formed in the top of the mold body (1), a gas-assisted assembly (9) is arranged on the inner wall of the bottom of the first groove (10), a backflow assembly (8) is arranged on the inner wall of the bottom of the second groove (12), and film forming cavities (11) which are distributed at equal intervals are formed in the top of the mold body (1) and located between the first groove (10) and the second groove (12);

the gas-assisted assembly (9) comprises a compressor (901), a first gas guide pipe (6) is fixedly sleeved at the gas inlet end of the compressor (901), an output end of the compressor (901) is fixedly connected with a gas guide plate (902), an exhaust end of the gas guide plate (902) is fixedly sleeved with a second gas guide pipe (906) and a third gas guide pipe (903), the exhaust end of the second gas guide pipe (906) extends into a left film forming cavity (11), the second gas guide pipe (906) is located in a left film forming cavity (11) and is fixedly connected with a first nozzle (905), the exhaust end of the third gas guide pipe (903) extends into the right film forming cavity (11), and the third gas guide pipe (903) is located in the right film forming cavity (11) and is fixedly connected with a second nozzle (904).

2. The flash backflow type gas-assisted injection molding device according to claim 1, wherein an air inlet end of the first air duct (6) extends out of the mold body (1), a first electric valve (7) is arranged on an outer wall of one end, extending out of the mold body (1), of the first air duct (6), and the first electric valve (7) is electrically connected with the controller.

3. The flash backflow type gas-assisted injection molding device of claim 1, wherein the backflow assembly (8) comprises first flow guide pipes (803) distributed at equal intervals, the feeding ends of the first flow guide pipes (803) are respectively connected with one sides of the film forming cavities (11) close to each other, the bottom inner walls of the second grooves (12) are fixedly connected with a heating box (802), the bottom inner walls of the heating box (802) are fixedly connected with a flash box (801), the discharging ends of the first flow guide pipes (803) are connected with the feeding ends of the flash box (801), the discharging ends of two sides of the flash box (801) are respectively fixedly connected with a second flow guide pipe (805) and a third flow guide pipe (807), and the compressor (901) and the heating box (802) are electrically connected with the controller.

4. The flash backflow type gas-assisted injection molding device according to claim 3, wherein the top of the first flow guide pipe (803) is fixedly connected with a second electric valve (806), a third groove for placing the first flow guide pipe (803) and the second electric valve (806) is formed in the top of the mold body (1) and on the side, close to each other, of the film forming cavity (11), and the second electric valve (806) is electrically connected with the controller.

5. A flash flow back type gas-assisted injection molding device according to claim 3, wherein a feeding pipe (5) is fixedly connected to both sides of the film forming cavity (11) far away from the flash tank (801), and the discharging ends of the second flow guide pipe (805) and the third flow guide pipe (807) are respectively connected to the sides of the feeding pipes (5) far away from each other.

6. The flash backflow type gas-assisted injection molding device according to claim 3, wherein a fourth gas guide pipe (4) is arranged at the top of the flash tank (801), the gas inlet end of the fourth gas guide pipe (4) extends out of the cover, a fourth electric valve (3) is fixedly connected to the outer wall of one end, located outside the cover, of the fourth gas guide pipe (4), and the fourth electric valve (3) is electrically connected with the controller.

7. The flash backflow type gas-assisted injection molding device according to claim 3, wherein the outer walls of the second air duct (906) and the third air duct (903) close to one end of the flash tank (801) are fixedly connected with a third electric valve (804), and the third electric valve (804) is electrically connected with the controller.