Automatic film extruding device for aramid film production

Abstract

The utility model discloses an automatic film extrusion device for aramid film production, which comprises a double-screw extruder for producing aramid film, a heating extrusion cylinder fixedly installed in the double-screw extruder, a film extrusion nozzle communicated and installed at one end of the heating extrusion cylinder, an aramid film cooling and conveying mechanism drivingly installed at the lower end of the film extrusion nozzle, the aramid film cooling and conveying mechanism sliding between two groups of guide blocks, and the guide blocks being fixedly installed at the inner two sides of the double-screw extruder.

Description

Technical Field

[0001] This utility model relates to the field of aramid film production technology, specifically to an automatic extrusion device for aramid film production. Background Technology

[0002] Aramid films, with their excellent properties such as high strength, high modulus, and high temperature resistance, have broad application prospects in aerospace, electronics, electrical engineering, and new energy fields. As market demand for aramid films continues to grow, traditional manual extrusion production methods are no longer sufficient to meet the requirements for efficient and high-quality production.

[0003] For example, the national authorized patent announcement number CN213972496U discloses a plastic extrusion machine, including a hopper, an extrusion cylinder, a spiral press rod, a motor, an outer cylinder, a heat dissipation assembly, an extrusion cone, a guide pipe, a film extrusion die, and a frame. The extrusion cylinder is horizontally fixed on the frame and is a cylinder with openings at both ends and a hollow cavity in the middle, with a spiral press rod installed inside the hollow cavity. The outer wall of the spiral press rod is provided with a spirally extending pusher plate. The left end of the spiral press rod is connected to the output shaft of the motor. The upper part of the left end of the spiral press rod is fixed to the hopper, and the discharge port at the bottom of the hopper connects to the hollow cavity in the middle of the extrusion cylinder. The right end face of the extrusion cylinder is connected to the extrusion cone. The right end of the extrusion cone is connected to the upper end of the guide pipe, and the lower end of the guide pipe is connected to the film extrusion die. This plastic extrusion machine has a simple and reasonable structural design, is easy to install, has stable performance, good heat dissipation, and high film quality.

[0004] However, the aforementioned plastic extrusion machine cannot simultaneously traction and cool and shape the extruded plastic. Due to its own weight and internal stress, it will experience varying degrees of stretching or shrinkage, which will lead to differences in the thickness of different parts of the film and fail to meet the strict requirements for product thickness uniformity. Utility Model Content

[0005] The purpose of this invention is to provide an automatic extrusion device for aramid film production, so as to solve the problem mentioned in the background art that the plastic cannot be simultaneously tractioned and cooled and shaped after extrusion.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An automatic extrusion device for producing aramid film includes: a twin-screw extruder for producing aramid film; a heated extrusion cylinder fixedly installed inside the twin-screw extruder with a film extrusion nozzle connected to one end; an aramid film cooling and conveying mechanism drivenly installed at the lower end of the film extrusion nozzle; the aramid film cooling and conveying mechanism sliding between two sets of guide blocks; and the guide blocks being fixedly installed at one end of the inner sides of the twin-screw extruder.

[0008] Preferably, the aramid film cooling and conveying mechanism includes two sets of side plates, two sets of transmission columns are rotatably installed between the two sets of side plates, and a conveyor belt is fitted on the outer surface of the two sets of transmission columns. The conveyor belt is located at the lower end of the film extrusion nozzle. A guide groove is opened at one end of each set of side plates, so that the two sets of side plates slide between the outer surfaces of the two sets of guide blocks through the two sets of guide grooves.

[0009] Preferably, the outer surface of the conveyor belt is fixedly installed with multiple sets of protrusions at equal intervals. These multiple sets of protrusions can support the extruded aramid film, thereby reducing the contact area between the aramid film and the conveyor belt and preventing adhesion.

[0010] Preferably, support wheels are fixedly installed at both ends of the outer surfaces of the two sets of side plates and the twin-screw extruder.

[0011] Preferably, the outer surface of the conveyor belt is provided with ventilation openings, and the ventilation openings are located within the spacing between every two sets of the convex strips.

[0012] Preferably, a U-shaped frame is fixedly installed between the two sets of side plates and located inside the conveyor belt. A water-cooled radiator is fixedly installed inside the U-shaped frame, so that the water-cooled radiator can blow cold air onto the lower surface of the aramid film through the ventilation port and flow between the convex strips.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the design of the twin-screw extruder, film extrusion nozzle, and aramid film cooling and conveying mechanism, during use, the operator pours the aramid raw material into the twin-screw extruder, where it is heated and extruded from the film extrusion nozzle. The extruded aramid film is then discharged onto the surface of the aramid film cooling and conveying mechanism, where it is simultaneously pulled and cooled by the mechanism to set its shape. This eliminates the need to wait for the film to cool naturally, reducing time losses in the production process, enabling continuous production, and significantly increasing film output per unit time. Furthermore, by avoiding production interruptions due to improper cooling, the production cycle is shortened, improving overall production efficiency. Simultaneously, the synchronization of the extrusion speed and pulling speed of the aramid film prevents excessive stretching due to excessively fast pulling or accumulation due to excessively slow pulling, ensuring that the stress on the film is consistent throughout the extrusion process, thus guaranteeing thickness uniformity.

[0015] 2. Through the design of the side plate, drive column, conveyor belt, ribs, and water-cooled radiator, during the extrusion of aramid film, the operator can extend the conveyor belt through the guide groove at one end of the side plate between two sets of guide blocks. Then, the motor fixedly installed with the drive column can be started to drive the conveyor belt fitted on the outer surface of the drive column. The conveyor belt can then receive and pull the extruded aramid film through the ribs on its outer surface. The ribs reduce the contact area between the aramid film and the conveyor belt to prevent sticking. At the same time as the aramid film is being pulled, the water-cooled radiator can be started, allowing the radiator to blow cold air through the vents onto the lower surface of the aramid film and flow between the ribs, so that it can contact the film in all directions and evenly, achieving a rapid and uniform cooling effect. Uniform cooling can make the molecular chains inside the film arrange regularly, avoiding internal stress concentration caused by uneven cooling, improving the physical properties and dimensional stability of the film, and ensuring the consistency of product quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the automatic extrusion device for aramid film production according to this utility model.

[0017] Figure 2 This is a schematic diagram of the aramid film cooling and conveying mechanism of this utility model being pulled out;

[0018] Figure 3 This is a schematic diagram of the structure of the heated extrusion cylinder and the film extrusion nozzle of this utility model;

[0019] Figure 4 This is a schematic diagram of the aramid film cooling and conveying mechanism of this utility model.

[0020] In the diagram: 1. Twin-screw extruder; 101. Film extrusion nozzle; 102. Guide block; 103. Heated extrusion cylinder; 2. Aramid film cooling and conveying mechanism; 201. Side plate; 202. U-shaped frame; 203. Water-cooled radiator; 204. Drive column; 205. Conveyor belt; 206. Raised bar; 207. Guide groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-3As shown, this embodiment provides an automatic extrusion device for producing aramid film, including a twin-screw extruder 1 for producing aramid film. A heated extrusion cylinder 103 fixedly installed inside the twin-screw extruder 1 has a film extrusion nozzle 101 connected to one end. An aramid film cooling and conveying mechanism 2 is drivenly installed at the lower end of the film extrusion nozzle 101. The aramid film cooling and conveying mechanism 2 slides between two sets of guide blocks 102. The guide blocks 102 are fixedly installed at one end of the inner two sides of the twin-screw extruder 1.

[0023] Through the design of the twin-screw extruder 1, the film extrusion nozzle 101, and the aramid film cooling and conveying mechanism 2, during use, the operator can pour the aramid raw material into the twin-screw extruder 1, where it is heated and extruded from the film extrusion nozzle 101. The extruded aramid film is then discharged onto the surface of the aramid film cooling and conveying mechanism 2, where it is simultaneously pulled and cooled by the mechanism to set its shape. This eliminates the need to wait for the film to cool naturally, reducing time loss in the production process, enabling continuous production, and significantly increasing film output per unit time. Furthermore, by avoiding production interruptions due to improper cooling, the production cycle is shortened, improving overall production efficiency. Simultaneously, by synchronizing the extrusion speed and pulling speed of the aramid film, excessive stretching due to excessively fast pulling or accumulation due to excessively slow pulling can be avoided, ensuring that the stress on the film is consistent throughout the extrusion process, thus guaranteeing thickness uniformity.

[0024] like Figure 4 As shown, the aramid film cooling and conveying mechanism 2 includes two sets of side plates 201, with two sets of transmission columns 204 rotatably mounted between them. A conveyor belt 205 is fitted onto the outer surface of the two sets of transmission columns 204, located at the lower end of the film extrusion nozzle 101. Each of the two sets of side plates 201 has a guide groove 207 at one end, allowing the two sets of side plates 201 to slide between the outer surfaces of the two sets of guide blocks 102 via the guide grooves 207. Multiple sets of protrusions 206 are fixedly installed at equal intervals on the outer surface of the conveyor belt 205, and these protrusions 206 can guide the extruded aramid film... The membrane is supported to reduce the contact area with the aramid film and avoid adhesion. Support wheels are fixedly installed at both ends of the outer surfaces of the two sets of side plates 201 and the twin-screw extruder 1. Ventilation openings are opened on the outer surface of the conveyor belt 205 and are located within the spacing between every two sets of convex strips 206. A U-shaped frame 202 is fixedly installed between the two sets of side plates 201 and is located inside the conveyor belt 205. A water-cooled radiator 203 is fixedly installed inside the U-shaped frame 202 so that the water-cooled radiator 203 can blow cold air onto the lower surface of the aramid film through the ventilation openings and flow between the convex strips 206.

[0025] Through the design of the side plate 201, drive column 204, conveyor belt 205, ribs 206, and water-cooled radiator 203, during the aramid film extrusion operation, the operator can extend the conveyor belt 205 through the guide groove 207 at one end of the side plate 201 between two sets of guide blocks 102. Then, the motor fixedly installed with the drive column 204 can be started to drive the conveyor belt 205, which is fitted onto the outer surface of the drive column 204, thus enabling the conveyor belt 205 to receive and pull the extruded aramid film through the ribs 206 on its outer surface. The support of the raised strips 206 can reduce the contact area between the strips and the aramid film to avoid adhesion. At the same time as the aramid film is pulled, the water-cooled radiator 203 can be activated, allowing the water-cooled radiator 203 to blow cold air onto the lower surface of the aramid film through the vents and flow between the raised strips 206. This allows the radiator to contact the film in all directions and evenly, achieving a rapid and uniform cooling effect. Uniform cooling can make the molecular chains inside the film arrange regularly, which can avoid internal stress concentration caused by uneven cooling, improve the physical properties and dimensional stability of the film, and ensure the consistency of product quality.

[0026] Based on the above technical solution, the working steps of this solution are summarized as follows: During the aramid film extrusion operation, the operator can extend the conveyor belt 205 through the guide groove 207 at one end of the side plate 201 between two sets of guide blocks 102. Then, the operator can pour the aramid raw material into the twin-screw extruder 1, where it is heated and extruded from the film extrusion nozzle 101. The extruded aramid film is then discharged and falls onto the protrusions 206 on the outer surface of the conveyor belt 205 for collection. The conveyor belt 205 can be driven by the motor through the transmission column 204, so that the conveyor belt 205 can receive and pull the extruded aramid film through the protrusions 206 on the outer surface. The receiving of the aramid film by the protrusions 206 can reduce the contact area between the aramid film and the conveyor belt to avoid sticking. At the same time as pulling the aramid film, the water-cooled radiator 203 can be started, so that the water-cooled radiator 203 can blow cold air through the vents onto the lower surface of the aramid film and flow between the protrusions 206, so that it can be quickly shaped.

[0027] In summary, the aramid film extruded by this device is simultaneously drawn and swept by cold air, allowing it to quickly set without waiting for the film to cool naturally. This reduces time loss in the production process, enables continuous production, and significantly increases film output per unit time.

[0028] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic extrusion device for producing aramid film, characterized in that, include: A twin-screw extruder (1) for producing aramid film has a heating extrusion cylinder (103) fixedly installed inside the twin-screw extruder (1) with a film extrusion nozzle (101) connected to one end. An aramid film cooling and conveying mechanism (2) is driven to be installed at the lower end of the film extrusion nozzle (101). The aramid film cooling and conveying mechanism (2) slides between two sets of guide blocks (102). The guide blocks (102) are fixedly installed at one end of the inner two sides of the twin-screw extruder (1).

2. The automatic extrusion device for producing aramid film according to claim 1, characterized in that: The aramid film cooling and conveying mechanism (2) includes two sets of side plates (201), and two sets of transmission columns (204) are rotatably installed between the two sets of side plates (201). The outer surfaces of the two sets of transmission columns (204) are fitted with conveyor belts (205). The conveyor belts (205) are located at the lower end of the film extrusion nozzle (101). One end of each set of side plates (201) is provided with a guide groove (207), so that the two sets of side plates (201) slide between the outer surfaces of the two sets of guide blocks (102) through the two sets of guide grooves (207).

3. The automatic extrusion device for producing aramid film according to claim 2, characterized in that: The outer surface of the conveyor belt (205) is fixedly equipped with multiple sets of protrusions (206) at equal intervals, and the multiple sets of protrusions (206) can receive the extruded aramid film.

4. An automatic extrusion device for producing aramid film according to claim 2, characterized in that: Both sets of side plates (201) and the outer surfaces of the twin-screw extruder (1) are fixedly equipped with support wheels at both ends.

5. An automatic extrusion device for producing aramid film according to claim 3, characterized in that: The outer surface of the conveyor belt (205) is provided with ventilation openings, and the ventilation openings are located within the spacing between every two sets of the protrusions (206).

6. An automatic extrusion device for producing aramid film according to claim 4, characterized in that: A U-shaped frame (202) is fixedly installed between the two sets of side plates (201) and located inside the conveyor belt (205). A water-cooled radiator (203) is fixedly installed inside the U-shaped frame (202), so that the water-cooled radiator (203) can blow cold air onto the lower surface of the aramid film through the vent and flow between the ribs (206).

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