CN216031994U

CN216031994U - Film curtain coating wet process forming device

Info

Publication number: CN216031994U
Application number: CN202122746443.3U
Authority: CN
Inventors: 夏中均; 刘学涌; 郑代芳; 彭勇; 邱兴旭
Original assignee: Sichuan Sidu Technology Co ltd
Current assignee: Sichuan Sidu Technology Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-03-15
Anticipated expiration: 2031-11-11

Abstract

The utility model provides a film casting wet forming device, which comprises a forming groove, a casting mould, a forming big roller and a guide roller; the molding groove is filled with molding liquid; the large forming roller and the guide roller are both fixed in the forming groove; the top of the large forming roller is higher than the liquid level of the forming liquid; the guide roller is completely immersed in the molding liquid; the casting die is arranged right above the large forming top, and the material solution extruded from the casting die can fall on the top of the large forming roller; an air knife is arranged above the top of the large forming roller; the air knife can blow uniform air flow to the material solution at the top of the large forming roller, and the blowing direction of the air knife is consistent with the rotating direction of the large forming roller. This scheme can guarantee that solution distributes evenly on the big roller of shaping, does benefit to the film shaping and breaks away from big roller and does not have the viscidity to can take out impurity to shaping liquid loop filter, guarantee that the film can not adsorb impurity at follow-up guide in-process, guarantee to have improved the fashioned quality of film and uniformity.

Description

Film curtain coating wet process forming device

Technical Field

The utility model relates to a film processing and forming device, in particular to a film casting wet forming device.

Background

In the prior art, a PI film is used as a base film of a traditional heat dissipation film, and a forming mode is a steel belt supporting mode; the carbene film forming mode is a large-roller casting mode, and the process can greatly reduce the manufacturing cost of the film, improve the thickness of the formed film and achieve more than four times of the thickness of the PI film.

In the casting forming process, a submerged transmission system is adopted, and the solution is extruded from a slit of a casting die and then enters the forming liquid through the surface support of a large roller to start forming. In the forming process, the distribution of the solution on the surface of the large forming roller is uneven, and the film cannot be separated from the surface of the large forming roller during forming to generate adhesion, so that the subsequent solution is distributed on the large forming roller more unevenly to form vicious circle. Meanwhile, after the solution is formed into a film, in the subsequent guiding process, part of fragments are easy to drop in the forming liquid, and foreign matters such as the fragments are easy to adsorb on the subsequent film in the forming liquid, so that the thickness of the finally formed film is uneven, and the production quality is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a technical scheme of a film casting wet forming device aiming at the defects in the prior art, the scheme adopts the air knife arranged above a large forming roller, and the circulating filtering equipment is arranged at the bottom of a forming tank, so that the solution can be uniformly distributed on the large forming roller, the large forming roller is favorably separated from the film without adhesion, the forming liquid can be circularly filtered to take out impurities, the film is ensured not to adsorb the impurities in the subsequent guiding process, and the quality and the consistency of film forming are ensured to be improved.

The scheme is realized by the following technical measures:

a film casting wet forming device comprises a forming groove, a casting mould, a forming big roller and a guide roller; the molding groove is filled with molding liquid; the large forming roller and the guide roller are both fixed in the forming groove; the top of the large forming roller is higher than the liquid level of the forming liquid; the guide roller is completely immersed in the molding liquid; the casting die is arranged right above the top of the large forming roller, and the material solution extruded from the casting die can fall on the top of the large forming roller; an air knife is arranged above the top of the large forming roller; the air knife can blow uniform air flow to the material solution at the top of the large forming roller, and the blowing direction of the air knife is consistent with the rotating direction of the large forming roller.

The scheme is preferably as follows: a plurality of guide rollers are arranged in the forming groove; the guide rollers are positioned to enable the film to move in a serpentine pattern across the guide rollers to subsequent processing equipment.

The scheme is preferably as follows: the bottom of the forming groove is connected with a circulating pipeline; the circulating pipeline is provided with a circulating pump and a filtering mechanism.

The scheme is preferably as follows: the circulating pipeline is provided with a temperature control mechanism.

The scheme is preferably as follows: the molding liquid is dilute sulfuric acid solution.

The beneficial effect of this scheme can learn according to the statement to above-mentioned scheme, because be provided with the air knife above the big roller of shaping along the big roller direction of rolling of shaping in this scheme, the even air current that the air knife blew out can make the material solution that falls on the big roller of shaping at the big roller top evenly distributed of shaping, then can the even film of stable shaping one-tenth thickness after getting into the shaping liquid, breaks away from not glutinous smoothly with the big roller of shaping. Simultaneously, the circulating line, circulating pump, filtering mechanism and the temperature control mechanism that set up in this scheme can guarantee the purity of shaping liquid and the constancy of temperature of shaping liquid, have guaranteed that fashioned film thickness is even, have improved production quality.

Therefore, compared with the prior art, the utility model has substantive characteristics and progress, and the beneficial effects of the implementation are also obvious.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure, 1 is a casting die, 2 is an air knife, 3 is a large forming roller, 4 is a guide roller, 5 is a forming liquid level, 6 is a film, 7 is a circulating pump, 8 is a filtering mechanism, 9 is a forming groove, 10 is a circulating pipeline, and 11 is a temperature control mechanism.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the following explains the present solution by a specific embodiment in combination with the accompanying drawings.

As can be seen from the attached drawings, the scheme comprises a forming groove, a casting die, a large forming roller and a guide roller; the molding groove is filled with molding liquid; the large forming roller and the guide roller are both fixed in the forming groove; the top of the large forming roller is higher than the liquid level of the forming liquid; the guide roller is completely immersed in the molding liquid; the casting die is arranged right above the top of the large forming roller, and the material solution extruded from the casting die can fall on the top of the large forming roller; an air knife is arranged above the top of the large forming roller; the air knife can blow uniform air flow to the material solution at the top of the large forming roller, and the blowing direction of the air knife is consistent with the rotating direction of the large forming roller.

A plurality of guide rollers are arranged in the forming groove; the guide rollers are positioned to enable the film to move in a serpentine pattern across the guide rollers to subsequent processing equipment. The bottom of the forming groove is connected with a circulating pipeline; the circulating pipeline is provided with a circulating pump and a filtering mechanism. The circulating pipeline is provided with a temperature control mechanism. The molding liquid is dilute sulfuric acid solution.

The specific implementation process of the scheme is as follows:

1. and conveying the prepared high-viscosity high-corrosion solution to a casting die through a metering pump.

2. The installation process requires setting the rotating speed of the large molding roller and the guide roller and the air quantity of the air knife.

3. And opening the forming big roller, the guide roller and the air knife.

4. And opening the casting die, enabling the solution extruded from the slit of the casting die to flow to the surface of the large forming roller, enabling the large forming roller to rotate at a constant speed to drive the film to move forward, and enabling the solution to be uniformly diffused on the surface of the large forming roller under the blowing of air flow of an air knife.

5. The solution enters the forming liquid by using a big roller as a support, the solution is subjected to double-sided gel forming in the forming liquid, the film sequentially passes through each guide roller, is formed in the forming groove for enough time and then is led out of the liquid level to the next washing procedure.

6. In the forming process, if the forming liquid is turbid or foreign matters exist, the circulating pump and the filtering mechanism are started to keep the forming liquid pure. Meanwhile, the temperature control mechanism can also control the overall temperature range of the molding liquid, and the molding work is favorably and smoothly carried out.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A film tape casting wet forming device is characterized in that: comprises a forming groove, a casting mould, a large forming roller and a guide roller; the molding groove is filled with molding liquid; the large forming roller and the guide roller are fixed in the forming groove; the top of the large forming roller is higher than the liquid level of the forming liquid; the guide roller is completely immersed in the molding liquid; the casting die is arranged right above the top of the large forming roller, and the material solution extruded from the casting die can fall on the top of the large forming roller; an air knife is arranged above the top of the large forming roller; the air knife can blow uniform air flow to the material solution at the top of the large forming roller, and the blowing direction of the air knife is consistent with the rotating direction of the large forming roller.

2. A film casting wet forming apparatus according to claim 1, wherein: a plurality of guide rollers are arranged in the forming groove; the guide rollers are positioned to enable the film to move in a serpentine pattern across the guide rollers to subsequent processing equipment.

3. A film casting wet forming apparatus according to claim 1, wherein: the bottom of the forming groove is connected with a circulating pipeline; and the circulating pipeline is provided with a circulating pump and a filtering mechanism.

4. A film casting wet forming apparatus according to claim 3, wherein: and a temperature control mechanism is arranged on the circulating pipeline.

5. A film casting wet forming apparatus according to claim 1, wherein: the forming liquid is a dilute sulfuric acid solution.