CN218985488U

CN218985488U - Ultrathin-wall foaming device based on PET modified composite material conductive foam

Info

Publication number: CN218985488U
Application number: CN202223554835.0U
Authority: CN
Inventors: 黄林元
Original assignee: Suzhou Aoliwen Electronics Co ltd
Current assignee: Suzhou Aoliwen Electronics Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-09
Anticipated expiration: 2032-12-29

Abstract

The utility model belongs to the field of conductive foam preparation, and particularly discloses an ultrathin-wall foaming device based on PET modified composite conductive foam, which comprises a base (100), a lifting seat (101), a stand column (200), a top plate (300), an upper die (400), an upper die cooling joint (401), an upper die cooling channel (410), a lower die (500), a lower die cooling joint (501), a lower die cooling channel (510), a foaming cavity (600), an injection molding opening (601), an injection molding machine (700), a circulating water tank (800) and a circulating water tank joint (801); the foaming device disclosed by the utility model has the advantages of uniform injection pressure and cooling, uniform density and good quality of the prepared PET foam product.

Description

Ultrathin-wall foaming device based on PET modified composite material conductive foam

Technical Field

The utility model belongs to the field of conductive foam preparation, and particularly discloses an ultrathin-wall foaming device based on PET modified composite conductive foam.

Background

The main component of PET foam is polyethylene terephthalate (Polyethylene terephthalate), commonly known as polyester resin. Polyethylene terephthalate (polyester resin) is mainly used for manufacturing synthetic fibers, films and bottles, and has application in engineering plastics and other fields. When foaming is adopted for forming the PET foam material, the PET foam material is relatively brittle, but has good heat resistance and mechanical strength. The PET foam can be recycled, so that the PET foam has good environmental protection performance. The PET foam core has good shear properties and is therefore commonly used as a shear resistant filler in shell structures. PET raw materials are lower in cost than general core foam materials, but sandwich construction materials using PET foam as a core generally require bonding with adhesives such as resins, but PET foam is relatively high in cost and weight due to its generally large cell size and thus resin absorptivity, thus limiting its application. However, a novel foaming technology appears in the academic world, and a batch of novel PET foam core materials represented by AIREX (titanium dioxide) T92.80 SealX can greatly reduce the resin absorptivity of the PET foam core materials by controlling the cell size and the cell breakage proportion, so that the application range of the PET foam core materials has been greatly expanded. The traditional conductive foam is formed by wrapping conductive cloth on a flame-retardant sponge, and after a series of treatments, the conductive foam has good surface conductivity and can be easily fixed on a device to be shielded by using an adhesive tape. Shielding materials having different cross-sectional shapes, mounting methods, UL ratings and shielding effectiveness may be selected. The method is widely applied to electronic products such as PDP televisions, LCD displays, liquid crystal televisions, mobile phones, notebook computers, MP3, communication cabinets, medical instruments and the like and the field of military industry and aerospace. The PET foam is used as a novel material of the novel conductive foam, so that the good heat resistance and shearing performance of the novel conductive foam can be effectively utilized. The PET foam needs to be used after being foamed in a foaming device, and if the heating and cooling processes are uneven, the uniformity of the PET foam can be affected, so that the quality of a product is reduced, and the conventional thin-wall foaming device has the defects.

Disclosure of Invention

Aiming at the defects, the utility model discloses an ultrathin-wall foaming device based on PET modified composite material conductive foam.

The technical scheme of the utility model is as follows:

an ultrathin-wall foaming device based on PET modified composite conductive foam comprises a base, a lifting seat, an upright post, a top plate, an upper die cooling joint, an upper die cooling channel, a lower die cooling joint, a lower die cooling channel, a foaming cavity, an injection molding opening, an injection molding machine, a circulating water tank and a circulating water tank joint; the base is a rectangular metal base; the upright posts are cylindrical, 4 in number and arranged at four corners of the base; the top plate is a rectangular metal plate and is arranged at the top of the upright post; the upper die is fixedly arranged below the top plate; the upper die is an inverted convex metal die body; an upper die cooling joint is arranged at the top of the upper die; a hollow upper die cooling channel is arranged in the upper die; a lower die is arranged below the upper die; the lower die is a concave metal die and can be matched with the upper die to form a closed foaming cavity; the bottom four feet of the lower die are provided with lifting seats which are arranged on the base; the left side and the right side of the lower die are provided with the lower die cooling joints; the lower die cooling channel is arranged in the lower die; the bottom of the lower die and the two sides of the lower die are also provided with the injection molding openings; the injection molding port is communicated with the foaming cavity; an injection molding machine is arranged on a base at the bottom of the lower die; the injection molding machine is communicated with the injection molding opening through a pipeline; the circulating water tank is arranged on one side of the base; the circulating water tank joint is arranged at the top of the circulating water tank; the circulating water tank joint is respectively communicated with the die cooling joint and the lower die cooling joint through pipelines.

Further, according to the ultrathin-wall foaming device based on the PET modified composite material conductive foam, the upper die cooling channel and the die cooling channel are both closely arranged in the foaming cavity.

Furthermore, the ultrathin-wall foaming device based on the PET modified composite material conductive foam is characterized in that the upper die and the lower die are made of stainless steel.

Further, according to the ultrathin-wall foaming device based on the PET modified composite material conductive foam, the lifting seat adopts the oil cylinder as a power source.

Further, according to the ultrathin-wall foaming device based on the PET modified composite material conductive foam, one side of the upright post is provided with the control switch.

Further, the ultrathin-wall foaming device based on the PET modified composite material conductive foam is characterized in that a heat preservation shell is arranged outside the circulating water tank.

The technical scheme can be used for obtaining the following beneficial effects: the utility model discloses an ultrathin-wall foaming device based on PET modified composite material conductive foam; compact structure, injection molding and cooling are even quick for the foaming of electrically conductive bubble cotton material is quick and even shaping, and product quality is even and the quality is higher.

Drawings

FIG. 1 is a schematic diagram of an ultrathin-wall foaming device based on PET modified composite conductive foam in example 1;

FIG. 2 is a schematic diagram of an ultrathin-wall foaming device based on PET modified composite conductive foam in example 2;

wherein: base 100, lifting seat 101, upright post 200, control switch 201, top plate 300, upper die 400, upper die cooling joint 401, upper die cooling channel 410, lower die 500, lower die cooling joint 501, lower die cooling channel 510, foaming chamber 600, injection port 601, injection molding machine 700, circulation tank 800, and circulation tank joint 801.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Example 1

The ultrathin-wall foaming device based on PET modified composite conductive foam is shown in FIG. 1, and is characterized by comprising a base 100, a lifting seat 101, a stand column 200, a top plate 300, an upper die 400, an upper die cooling joint 401, an upper die cooling channel 410, a lower die 500, a lower die cooling joint 501, a lower die cooling channel 510, a foaming cavity 600, an injection molding opening 601, an injection molding machine 700, a circulating water tank 800 and a circulating water tank joint 801; the base 100 is a rectangular metal base; the columns 200 are cylindrical, 4 columns are arranged at four corners of the base 100; the top plate 300 is a rectangular metal plate and is mounted on top of the upright post 200; the upper die 400 is fixedly arranged below the top plate 300; the upper die 400 is an inverted convex metal die body; an upper die cooling joint 401 is arranged at the top of the upper die 400; a hollow upper mold cooling passage 410 is provided inside the upper mold 400; a lower die 500 is arranged below the upper die 400; the lower die 500 is a concave metal die and can be matched with the upper die to form a closed foaming cavity 600; the four feet at the bottom of the lower die 500 are provided with lifting seats 101 which are arranged on the base 100; the left and right sides of the lower die 500 are provided with the lower die cooling joints 501; the lower die 500 is internally provided with the lower die cooling channel 510; the bottom of the lower die 500 and the two sides are also provided with the injection molding openings 601; the injection molding opening 601 is communicated with the foaming cavity 600; an injection molding machine 700 is arranged on the base 100 at the bottom of the lower die 500; the injection molding machine 700 is communicated with the injection molding opening 601 through a pipeline; the circulation tank 800 is disposed at one side of the base 100; the top of the circulating water tank 800 is provided with the circulating water tank joint 801; the circulation tank joint 801 communicates with the die cooling joint 401 and the lower die cooling joint 501, respectively, through pipes.

In operation, the lower mold 500 is lifted up under the action of the lifting seat 101 to be combined with the upper mold 400 to form a foaming cavity 600, then the injection molding machine 700 is started, PET modified material is injected from the injection molding opening 601, foaming is performed in the foaming cavity 600, then the temperature is uniformly reduced through refrigerants in the upper mold cooling channel 410 and the lower mold cooling channel 510, and when the temperature is reduced to a preset temperature, the upper mold 400 and the lower mold 500 are separated to perform demolding.

Example 2

The ultrathin-wall foaming device based on PET modified composite conductive foam is shown in FIG. 2, and is characterized by comprising a base 100, a lifting seat 101, a stand column 200, a top plate 300, an upper die 400, an upper die cooling joint 401, an upper die cooling channel 410, a lower die 500, a lower die cooling joint 501, a lower die cooling channel 510, a foaming cavity 600, an injection molding opening 601, an injection molding machine 700, a circulating water tank 800 and a circulating water tank joint 801; the base 100 is a rectangular metal base; the columns 200 are cylindrical, 4 columns are arranged at four corners of the base 100; the top plate 300 is a rectangular metal plate and is mounted on top of the upright post 200; the upper die 400 is fixedly arranged below the top plate 300; the upper die 400 is an inverted convex metal die body; an upper die cooling joint 401 is arranged at the top of the upper die 400; a hollow upper mold cooling passage 410 is provided inside the upper mold 400; a lower die 500 is arranged below the upper die 400; the lower die 500 is a concave metal die and can be matched with the upper die to form a closed foaming cavity 600; the four feet at the bottom of the lower die 500 are provided with lifting seats 101 which are arranged on the base 100; the left and right sides of the lower die 500 are provided with the lower die cooling joints 501; the lower die 500 is internally provided with the lower die cooling channel 510; the bottom of the lower die 500 and the two sides are also provided with the injection molding openings 601; the injection molding opening 601 is communicated with the foaming cavity 600; an injection molding machine 700 is arranged on the base 100 at the bottom of the lower die 500; the injection molding machine 700 is communicated with the injection molding opening 601 through a pipeline; the circulation tank 800 is disposed at one side of the base 100; the top of the circulating water tank 800 is provided with the circulating water tank joint 801; the circulating water tank joint 801 is respectively communicated with the die cooling joint 401 and the lower die cooling joint 501 through pipelines; preferably, both the upper mold cooling channel 410 and the mold cooling channel 510 are disposed in close proximity to the foaming chamber 600; further, the upper die 400 and the lower die 500 are made of stainless steel; in particular, the lifting seat 101 adopts an oil cylinder as a power source; further, a control switch 201 is disposed on one side of the upright post 200; preferably, a heat-insulating shell is arranged outside the circulating water tank 800.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, i.e. the present utility model is not limited to the above embodiments, but is capable of being modified and varied in all ways according to the following claims and the detailed description.

Claims

1. An ultrathin-wall foaming device based on PET modified composite material conductive foam is characterized by comprising a base (100), a lifting seat (101), a stand column (200), a top plate (300), an upper die (400), an upper die cooling joint (401), an upper die cooling channel (410), a lower die (500), a lower die cooling joint (501), a lower die cooling channel (510), a foaming cavity (600), an injection molding opening (601), an injection molding machine (700), a circulating water tank (800) and a circulating water tank joint (801); the base (100) is a rectangular metal base; the upright posts (200) are cylindrical, 4 in number and arranged at four corners of the base (100); the top plate (300) is a rectangular metal plate and is arranged at the top of the upright post (200); the upper die (400) is fixedly arranged below the top plate (300); the upper die (400) is an inverted convex metal die body; an upper die cooling joint (401) is arranged at the top of the upper die (400); a hollow upper die cooling channel (410) is arranged in the upper die (400); a lower die (500) is arranged below the upper die (400); the lower die (500) is a concave metal die and can be matched with the upper die to form a closed foaming cavity (600); lifting seats (101) are arranged on four feet at the bottom of the lower die (500) and are arranged on the base (100); the left side and the right side of the lower die (500) are provided with the lower die cooling joints (501); the lower die (500) is internally provided with the lower die cooling channel (510); the bottom of the lower die (500) and the two sides of the lower die are also provided with the injection molding openings (601); the injection molding opening (601) is communicated with the foaming cavity (600); an injection molding machine (700) is arranged on the base (100) at the bottom of the lower die (500); the injection molding machine (700) is communicated with the injection molding opening (601) through a pipeline; the circulating water tank (800) is arranged at one side of the base (100); the top of the circulating water tank (800) is provided with the circulating water tank joint (801); the circulating water tank joint (801) is respectively communicated with the die cooling joint (401) and the lower die cooling joint (501) through pipelines.

2. An ultra-thin wall foaming device based on PET-modified composite conductive foam according to claim 1, characterized in that the upper mould cooling channel (410) and the mould cooling channel (510) are both arranged close to the foaming chamber (600).

3. The ultrathin-wall foaming device based on PET modified composite conductive foam according to claim 1, wherein the upper die (400) and the lower die (500) are made of stainless steel.

4. The ultrathin-wall foaming device based on PET modified composite conductive foam according to claim 1, wherein the lifting seat (101) adopts an oil cylinder as a power source.

5. The ultrathin-wall foaming device based on PET modified composite conductive foam as claimed in claim 1, wherein a control switch (201) is arranged on one side of the upright post (200).

6. The ultrathin-wall foaming device based on PET modified composite conductive foam as claimed in claim 1, wherein a thermal insulation shell is arranged outside the circulating water tank (800).