CN210389919U

CN210389919U - Gas-assisted flash structure of injection mold

Info

Publication number: CN210389919U
Application number: CN201920138554.6U
Authority: CN
Inventors: 邱翌; 邬开华
Original assignee: Ningbo Lian Science And Technology Co Ltd
Current assignee: Ningbo Lian Science And Technology Co Ltd
Priority date: 2019-01-27
Filing date: 2019-01-27
Publication date: 2020-04-24
Anticipated expiration: 2029-01-27

Abstract

The utility model relates to an injection mold equipment field specifically relates to an injection mold's flash structure is assisted to gas, including the other material chamber that overflows that is provided with of cover half die cavity in the cover half main part, overflow and expect that the chamber is linked together with the cover half die cavity, cover half die cavity side is provided with shutoff cylinder and shutoff pole, still is provided with gas in the cover half main part and assists the device, and gas is assisted the device and is included main gas channel and the branch air flue that is linked together with main gas channel. During injection molding, the plugging cylinder pushes the plugging rod to plug a channel between the fixed mold cavity and the overflowing material cavity; after the injection molding is finished, gas is injected into the main air channel, then the gas enters the fixed mold cavity through the air tap through the air distribution channel, meanwhile, the plugging cylinder pulls down the plugging rod, so that the fixed mold cavity and a channel between the overflowing material cavity pass, a part of plastic materials in the plastic melt are blown into the overflowing material cavity beside the fixed mold cavity, and redundant materials are cooled and solidified in the overflowing material cavity. The utility model has the advantages of simple structure, convenient operation, effective reduction in production cost.

Description

Gas-assisted flash structure of injection mold

Technical Field

The utility model relates to an injection mold equipment field specifically, relates to an injection mold's gas is assisted flash structure.

Background

An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

For some thick-wall products, such as a trunk handle, an automobile door handle and the like, when injection molding is performed, redundant filler in a thick-wall part of the product needs to be blown out, and a cavity is formed in the thick-wall part of the product, so that the material can be saved, the redundant filler can be recycled, the production cost can be saved, the pressure maintaining process during injection molding of a mold can be replaced, and the production efficiency can be improved. Through designing a structure for blow the material more convenient operation of moulding plastics in-process, it is very necessary.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides an injection mold's gas is assisted flash structure.

The utility model discloses an injection mold's flash structure is assisted to gas, overflow the material chamber including being provided with by the cover half die cavity in the cover half main part, it is linked together with the cover half die cavity to overflow the material chamber, cover half die cavity side is provided with shutoff cylinder and shutoff pole, the one end of shutoff pole is connected with the output of shutoff cylinder, the other end of shutoff pole extends to set up in overflowing the interface channel of material chamber and cover half die cavity, still be provided with the gas in the cover half main part and assist the device, the gas is assisted the device and is set up the rear at the cover half die cavity, the gas is assisted the device and is included main gas passage and the branch air flue that is linked together with main gas passage.

Further, at least two fixed die cavities are arranged on the fixed die main body.

Furthermore, the main air passage is connected with an external air source, the number of the air distribution passages is two, and each air distribution passage is arranged corresponding to one fixed die cavity.

Further, the junction of gas distribution way and cover half die cavity is provided with air cock and gas closing cap, the output of air cock extends to the cover half die cavity, the fixed rear that sets up at the air cock of gas closing cap.

Further, the air distribution passage is communicated with the fixed die cavity.

Has the advantages that: the utility model discloses a gas of injection mold assists flash structure, the cooperation of shutoff cylinder and gas of setting assist the device, can blow off the unnecessary filler in the thick wall finished product upper wall thickness department effectively, the overflowed material that forms in the overflowed material chamber can be taken off from the finished product, retrieves and recycles, practices thrift manufacturing cost, creates bigger economic value; the equipment is simple in structure, convenient to operate and high in practicability.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic view of a split structure of the present invention;

fig. 3 is a schematic view of a split structure of the present invention;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

fig. 5 is a third schematic view of the split structure of the present invention;

fig. 6 is a fourth schematic view of the split structure of the present invention;

description of reference numerals: the mould comprises a fixed mould main body 1, a plugging cylinder 2, a plugging rod 2a, a main air channel 3, an air distributing channel 3a, an air nozzle 3b, an air sealing cover 3c, a finished product 4, an overflowing material cavity 5 and a movable mould cavity plate 6.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 6, an air-assisted flash structure of an injection mold comprises an overflow cavity 5 arranged beside a fixed mold cavity on a fixed mold main body 1, the overflow cavity 5 is communicated with the fixed mold cavity, a plugging cylinder 2 and a plugging rod 2a are arranged beside the fixed mold cavity, one end of the plugging rod 2a is connected with an output end of the plugging cylinder 2, the other end of the plugging rod 2a extends into a connecting channel between the overflow cavity 5 and the fixed mold cavity, an air-assisted device is further arranged on the fixed mold main body 1 and arranged behind the fixed mold cavity, and the air-assisted device comprises a main air channel 3 and a branch air channel 3a communicated with the main air channel 3. The structure can blow out the internal filling at thicker and thicker positions of some thick-wall products during injection molding. During injection molding, the plugging cylinder 2 pushes the plugging rod 2a to plug a channel between the fixed mold cavity and the overflowing material cavity 5; after injection molding is finished, when plastic melt is not completely cooled, gas is injected into the main air channel 3, then the gas enters the fixed mold cavity from the air faucet 3b through the air distributing channel 3a, meanwhile, the plugging cylinder 2 pulls down the plugging rod 2a, so that a channel between the fixed mold cavity and the overflowing material cavity 5 passes, a part of plastic materials in the plastic melt are blown into the overflowing material cavity 5 beside, air is wrapped in the finished product 4 to form a cavity, and redundant materials are cooled and solidified in the overflowing material cavity 5. And then waiting for cooling and demoulding, and the like, removing the overflowing material from the finished product 4 after demoulding to obtain the finished product 4, wherein the overflowing material can be recycled.

The fixed die main body 1 is at least provided with two fixed die cavities. Each fixed die cavity is provided with a gas distributing channel 3a and an overflow cavity 5.

The number of the main air passages 3 is one, the main air passages 3 are connected with an external air source, the number of the branch air passages 3a is two, and each branch air passage 3a is arranged corresponding to one fixed die cavity. After injection molding, gas of an external gas source can quickly enter the gas distributing channel 3a through the main gas channel 3 and then enters the fixed mold cavity.

The connecting part of the air distributing passage 3a and the fixed die cavity is provided with an air tap 3b and an air sealing cover 3c, the output end of the air tap 3b extends into the fixed die cavity, and the air sealing cover 3c is fixedly arranged behind the air tap 3 b. The air nozzle 3b extends to the inside of the fixed mold cavity, the air in the main air duct 3 is guided into the inside of the thick wall of the finished product 4, and the air seal cover 3c plays a role of sealing.

The gas distribution passage 3a is communicated with the fixed die cavity.

The working principle is as follows: the structure can blow out the internal filling at thicker and thicker positions of some thick-wall products during injection molding. During injection molding, the plugging cylinder 2 pushes the plugging rod 2a to plug a channel between the fixed mold cavity and the overflowing material cavity 5; after injection molding is finished, when plastic melt is not completely cooled, gas is injected into the main air channel 3, then the gas enters the fixed mold cavity from the air faucet 3b through the air distributing channel 3a, meanwhile, the plugging cylinder 2 pulls down the plugging rod 2a, so that a channel between the fixed mold cavity and the overflowing material cavity 5 passes, a part of plastic materials in the plastic melt are blown into the overflowing material cavity 5 beside, air is wrapped in the finished product 4 to form a cavity, and redundant materials are cooled and solidified in the overflowing material cavity 5. And then waiting for cooling and demoulding, and the like, removing the overflowing material from the finished product 4 after demoulding to obtain the finished product 4, wherein the overflowing material can be recycled.

Each fixed die cavity is provided with a gas distributing channel 3a and an overflow cavity 5. After injection molding, gas of an external gas source can quickly enter the gas distributing channel 3a through the main gas channel 3 and then enters the fixed mold cavity.

The air nozzle 3b extends to the inside of the fixed mold cavity, the air in the main air duct 3 is guided into the inside of the thick wall of the finished product 4, and the air seal cover 3c plays a role of sealing.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides an injection mold's flash structure is assisted to gas which characterized in that: the improved cover half structure is characterized in that an overflow material cavity (5) is formed beside a cover half cavity on a cover half main body (1), the overflow material cavity (5) is communicated with the cover half cavity, a blocking cylinder (2) and a blocking rod (2a) are arranged beside the cover half cavity, one end of the blocking rod (2a) is connected with the output end of the blocking cylinder (2), the other end of the blocking rod (2a) extends into a connecting channel of the overflow material cavity (5) and the cover half cavity, an air assisting device is further arranged on the cover half main body (1), the air assisting device is arranged at the rear of the cover half cavity and comprises a main air channel (3) and a gas distributing channel (3a) communicated with the main air channel (3).

2. The gas-assisted flash structure of an injection mold according to claim 1, wherein: the fixed die main body (1) is at least provided with two fixed die cavities.

3. The gas-assisted flash structure of an injection mold according to claim 1, wherein: the main air passage (3) is provided with one, the main air passage (3) is connected with an external air source, the number of the air distribution passages (3a) is two, and each air distribution passage (3a) is arranged corresponding to one fixed die cavity.

4. The gas-assisted flash structure of an injection mold according to claim 1, wherein: the connection of air distributing channel (3a) and cover half die cavity is provided with air cock (3b) and air seal cover (3c), the output of air cock (3b) extends to the cover half die cavity, air seal cover (3c) is fixed to be set up at the rear of air cock (3 b).

5. The gas-assisted flash structure of an injection mold according to claim 1, wherein: the gas distribution passage (3a) is communicated with the fixed die cavity.