CN212266567U

CN212266567U - Supercharging device on injection molding machine

Info

Publication number: CN212266567U
Application number: CN202020636594.6U
Authority: CN
Inventors: 郑龙辉; 李琦
Original assignee: Changchun Leicester Auto Parts Co ltd
Current assignee: Changchun Leicester Auto Parts Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2021-01-01
Anticipated expiration: 2030-04-24

Abstract

The utility model relates to a supercharging device on injection molding machine relates to automobile parts technical field, has solved the simple filling work that can not accomplish the mould inside to complicated part through injection molding machine existing equipment high pressure injection moulding among the prior art for the technical problem of rejection rate increase. The technical characteristics are that the device comprises a pressurizing cylinder, wherein a pressurizing cavity is arranged above an inner cavity of the pressurizing cylinder; the pressurizing piston is arranged in the pressurizing cavity and is in sliding fit with the pressurizing cavity, a sealing ring is arranged on the pressurizing piston, and a power device is arranged at the lower end of the pressurizing piston; the material supplementing opening is arranged on one side above the pressurizing cylinder and is communicated with the pressurizing cavity; the discharge port is arranged on the other side above the pressurizing cylinder and is communicated with the pressurizing cavity; wherein, the feed supplementing opening and the discharge opening are both provided with check valves for controlling the material flow direction. The filling device has the beneficial effects that the material can be filled in the mold of the complex part, the filling work is completed, and the rejection rate is reduced.

Description

Supercharging device on injection molding machine

Technical Field

The utility model relates to an automobile parts production technical field, in particular to supercharging device on injection molding machine.

Background

An injection molding machine is also known as an injection molding machine or an injection machine. It is a main forming equipment for making various shaped plastic products from thermoplastic plastics or thermosetting plastics by using plastic forming mould. The device is divided into a vertical type, a horizontal type and a full-electric type. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity.

In the prior art, because the internal structures of some parts are complex, the filling work of the parts can not be finished simply by high-pressure injection molding of the original equipment, so that the rejection rate is increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the simple filling work that can not accomplish the mould inside to complicated part through injection molding machine existing equipment high pressure injection moulding among the prior art for the technical problem of rejection rate increase provides a supercharging device on the injection molding machine.

In order to solve the technical problem, the technical scheme of the utility model is specifically as follows:

a pressure intensifier assembly for an injection molding machine comprising:

a pressurizing cavity is arranged above the inner cavity of the pressurizing cylinder;

the pressurizing piston is arranged in the pressurizing cavity and is in sliding fit with the pressurizing cavity, a sealing ring is arranged on the pressurizing piston, and a power device is arranged at the lower end of the pressurizing piston;

the material supplementing opening is arranged on one side above the pressurizing cylinder and is communicated with the pressurizing cavity;

the discharge port is arranged on the other side above the pressurizing cylinder and is communicated with the pressurizing cavity;

the feeding pipe is a tee joint, a first port of the feeding pipe is communicated with an external feeding device, a second port of the feeding pipe is communicated with a discharge port, and a third port of the feeding pipe is communicated with a die port needing injection molding;

wherein, the feed supplementing opening and the discharge opening are both provided with check valves for controlling the material flow direction.

Furthermore, a round cylinder body is arranged above the pressurizing cylinder, a square cylinder body is arranged below the pressurizing cylinder, and the round cylinder body and the square cylinder body are of an integrated structure;

wherein, the inner cavity of the round cylinder body is a pressurizing cavity, and the inner cavity of the square cylinder body is a power cavity;

and a power device is arranged in the power cavity.

Further, the power plant includes:

the two ends of the crankshaft are rotationally connected with the side wall of the power cavity;

the motor is fixedly arranged on the outer side of the square cylinder, and a shaft of the motor is fixedly connected with one end of the crankshaft;

and one end of the connecting rod is rotatably connected with the protruding part of the crankshaft, and the other end of the connecting rod is rotatably connected with the bottom of the supercharging piston.

Further, the check valve includes: the first check valve is installed at the feeding port and communicated with an external feeding pipeline, the second check valve is installed at the discharging port and communicated with the second port of the feeding pipe.

The utility model discloses following beneficial effect has:

the utility model discloses a supercharging device on injection molding machine, through setting up a pressure boost section of thick bamboo and pressure boost piston, in case the pressure of inlet pipe is not enough with the inside time of the mould of material injection complicated part, start power device and drive pressure boost piston upward movement, the space through pressure boost piston compression pressure boost chamber comes the material to pour into the mould into inside, makes the material can be full of the mould of complicated part, accomplishes and fills work, and the rejection rate reduces.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural view of a pressurizing device on an injection molding machine according to the present invention;

fig. 2 is an installation schematic diagram of the first check valve and the second check valve of the pressurization device on the injection molding machine of the present invention.

The reference numerals in the figures denote:

1. a pressurizing cylinder; 101. a power cavity; 102. a pressurizing cavity; 2. a booster piston; 3. a material supplementing port; 4. a first check valve; 5. a feed pipe; 6. a second one-way valve; 7. a discharge port; 8. a power plant; 801. a motor; 802. a crankshaft; 803. a connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, a pressurizing device of an injection molding machine includes:

a pressurizing cylinder 1, wherein a pressurizing cavity 102 is arranged above the inner cavity of the pressurizing cylinder 1;

the booster piston 2 is arranged in the booster cavity 102 and is in sliding fit with the booster cavity 102, a sealing ring is arranged on the booster piston 2, and a power device 8 is arranged at the lower end of the booster piston 2;

the material supplementing opening 3 is arranged on one side above the pressurizing cylinder 1 and communicated with the pressurizing cavity 102;

the discharge port 7 is arranged on the other side above the pressurizing cylinder 1, and the discharge port 7 is communicated with the pressurizing cavity 102;

the injection molding device comprises a feeding pipe 5, wherein the feeding pipe 5 is a tee joint, a first opening of the feeding pipe 5 is communicated with an external feeding device, a second opening of the feeding pipe 5 is communicated with a discharging opening 7, and a third opening of the feeding pipe 5 is communicated with a die opening needing injection molding;

wherein, the feed supplementing port 3 and the discharge port 7 are both provided with a one-way valve for controlling the material flow direction.

The working principle is as follows: when a part mould with a relatively simple structure is subjected to injection molding, only the feeding pipe 5 is needed, the external feeding device enters the feeding pipe 5 through the first opening of the feeding pipe 5 and enters the mould opening from the third opening, and the injection molding work of the part mould is completed; once the structure of the part is complex, the internal structure of the mold is relatively complex, in this case, it is difficult for general pressure to fill the material inside the mold, a pressurizing device is needed, specifically, the power device 8 is started to move the pressurizing piston 2 downward along the pressurizing cavity 102, in this process, the external material can enter the pressurizing cavity 102 through the material supplementing device along the material supplementing port 3, when the power device drives the pressurizing piston 2 to move upward, the pressurizing piston 2 extrudes the space of the pressurizing cavity 102 to increase the pressure, meanwhile, as shown in fig. 1, the cross section of the pressurizing cavity 102 is much larger than that of the material discharging port 7, so that a high pressure is generated on the material, and because the material supplementing port 3 and the material discharging port 7 are both provided with one-way valves, as shown in fig. 2, the material can exit from the material discharging port 7 and then enter the mold through the material inlet pipe 5, the filling work of the complex part die is completed, and the rejection rate of products is reduced.

A round cylinder body is arranged above the pressurizing cylinder 1, a square cylinder body is arranged below the pressurizing cylinder 1, and the round cylinder body and the square cylinder body are of an integrated structure;

wherein, the inner cavity of the round cylinder body is a pressurizing cavity 102, and the inner cavity of the square cylinder body is a power cavity 101;

a power unit 8 is installed in the power chamber 101.

The power unit 8 includes:

two ends of the crankshaft 802 are rotatably connected with the side wall of the power cavity 101;

the motor 801 is fixedly arranged on the outer side of the square cylinder, and the shaft of the motor 801 is fixedly connected with one end of the crankshaft 802;

one end of the connecting rod 803 is rotatably connected to the protruding portion of the crankshaft 802, and the other end of the connecting rod 803 is rotatably connected to the bottom of the booster piston 2.

The working principle is as follows: the inner cavity and the outer cavity of the square cylinder are both rectangular structures, so that the action device 8 is convenient to mount; the motor 801 drives the crankshaft 802 to rotate, the crankshaft 802 drives the connecting rod 803 to move, the motor 801 drives the pressurizing piston 2 to move up and down along the pressurizing cavity 102, when the pressurizing piston 2 moves downwards, external materials enter the pressurizing cavity 102 through the material supplementing opening 3, and when the pressurizing piston 2 moves upwards, the external materials enter the die through the material outlet 7.

The check valve includes: the first check valve 4 is installed at the feed supplementing opening 3, the first check valve 4 is communicated with an external feed supplementing pipeline, the second check valve 6 is installed at the discharge opening 7, and the second check valve 6 is communicated with the second opening of the feed pipe 5.

The working principle is as follows: first check valve 4 and second check valve 6 can control the flow direction of material, and when pressure boost piston 2 downstream, the material gets into pressure boost chamber 102 along feed supplement mouth 3 through first check valve 4 in, and when pressure boost piston 2 upward movement, in external material passes through discharge gate 7 and gets into the mould through second check valve 6, accomplishes the work that the pressure boost injected the material, has also guaranteed the independence between external feed supplement pipeline and the inlet pipe 5.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A supercharging arrangement on an injection molding machine, comprising:

the device comprises a pressurizing cylinder (1), wherein a pressurizing cavity (102) is arranged above an inner cavity of the pressurizing cylinder (1);

the device comprises a pressurizing piston (2), wherein the pressurizing piston (2) is arranged in a pressurizing cavity (102) and is in sliding fit with the pressurizing cavity (102), a sealing ring is arranged on the pressurizing piston (2), and a power device (8) is arranged at the lower end of the pressurizing piston (2);

the material supplementing opening (3) is arranged on one side above the pressurizing cylinder (1) and communicated with the pressurizing cavity (102);

the discharge port (7) is arranged on the other side above the pressurizing cylinder (1) and communicated with the pressurizing cavity (102);

the injection molding device comprises a feeding pipe (5), wherein the feeding pipe (5) is a tee joint, a first opening of the feeding pipe (5) is communicated with an external feeding device, a second opening of the feeding pipe (5) is communicated with a discharging opening (7), and a third opening of the feeding pipe (5) is communicated with a mold opening needing injection molding;

wherein, the feed supplementing opening (3) and the discharge opening (7) are both provided with one-way valves for controlling the material flow direction.

2. The pressurization device on the injection molding machine according to claim 1, characterized in that a circular cylinder body is arranged above the pressurization cylinder (1), a square cylinder body is arranged below the pressurization cylinder (1), and the circular cylinder body and the square cylinder body are of an integrated structure;

the inner cavity of the round cylinder body is a pressurizing cavity (102), and the inner cavity of the square cylinder body is a power cavity (101);

and a power device (8) is arranged in the power cavity (101).

3. A pressurization device on an injection molding machine according to claim 2, characterized in that said power unit (8) comprises:

the two ends of the crankshaft (802) are rotatably connected with the side wall of the power cavity (101);

the motor (801) is fixedly arranged on the outer side of the square cylinder, and the shaft of the motor (801) is fixedly connected with one end of the crankshaft (802);

and one end of the connecting rod (803) is rotatably connected with the protruding part of the crankshaft (802), and the other end of the connecting rod (803) is rotatably connected with the bottom of the booster piston (2).

4. A pressurization device on an injection molding machine according to claim 1, wherein said check valve comprises: first check valve (4) and second check valve (6), first check valve (4) are installed to feed supplement mouth (3) department, first check valve (4) and outside feed supplement pipeline intercommunication, discharge gate (7) department installs second check valve (6), second check valve (6) and the second mouth intercommunication of inlet pipe (5).