PEEK film extruder

Abstract

The utility model relates to the technical field of film production, and discloses a PEEK film extruder which comprises a base, a speed reducer is fixedly connected to the side wall of the base, a motor is arranged on the side wall of the speed reducer, a material conveying assembly is arranged on the side wall of the speed reducer, an extruder body is fixedly connected to the side wall of the base, and the material conveying assembly is arranged on the side wall of the extruder body. A cooling assembly is arranged on the side wall of the extruder body; the material conveying assembly comprises a hopper, one side of the extruder body is fixedly connected with a screw rod, the screw rod is connected with the speed reducer, and the side wall of the screw rod is fixedly connected with a weighing meter. According to the utility model, after the motor is started, the speed reducer drives the screw rod to rotate, the material suction machine sucks materials into the hopper, the materials are measured by the weighing meter and then enter the screw rod to be plasticized, and the molten materials reach the extruder body, are filtered by the screen exchanger and enter a mold through the joint; the problems that a screw of a traditional extruder is not resistant to high temperature, rapid in abrasion and inaccurate in material adding amount are solved, and the plasticizing quality and stability of materials are improved.

Description

Technical Field

[0001] This utility model relates to the field of film production technology, and in particular to a PEEK film extruder. Background Technology

[0002] In today's environment of continuous innovation in industrial technology, the research and development of processing equipment for high-performance materials is becoming increasingly important. PEEK film, as a material with excellent high temperature resistance, high strength and chemical stability, is used in the aerospace field to manufacture key components of aircraft and in the electronics and electrical industry to make high-reliability insulating materials. Its application scope continues to expand.

[0003] Traditional PEEK film extrusion technology typically involves a motor directly connected to a screw, which rotates within the barrel. Material falls naturally into the barrel from an open hopper under gravity and is propelled towards the die head by the screw. During this movement, an external heating device heats the material, gradually melting and plasticizing it. The plasticized material is then extruded from the die head to form a film. This traditional technology primarily focuses on achieving the basic transformation of the material from a solid to a molten state and then to the final product.

[0004] Due to the extremely high processing temperature of PEEK material, screws made of ordinary materials wear out very quickly under prolonged high temperature, high pressure, and high shear force operating environments. Once the screw wears out, the shape and size of its threads change, directly resulting in uneven heating and plasticization of the material under the screw's pushing and stirring action. Simultaneously, the material addition process relies entirely on manual observation and experience, leading to significant deviations in the amount of material added per batch, further exacerbating the instability of the material's plasticization quality. Therefore, a PEEK film extruder is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a PEEK film extruder, which aims to improve the problems of traditional extruder screws being unable to withstand high temperatures, experiencing rapid wear, and having inaccurate material addition rates in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A PEEK film extruder includes a base, a speed reducer fixedly connected to the side wall of the base, a motor disposed on the side wall of the speed reducer, a material conveying assembly disposed on the side wall of the speed reducer, an extruder body fixedly connected to the side wall of the base, and a cooling assembly disposed on the side wall of the extruder body.

[0008] The feeding assembly includes a hopper, a screw is fixedly connected to one side of the extruder body, the screw is connected to the reducer, a weighing device is fixedly connected to the side wall of the screw, the side wall of the hopper is fixedly connected to the side wall of the weighing device, a suction device is fixedly connected to the side wall of the hopper, a screen changer is fixedly connected to the other side of the extruder body, and a connector is fixedly connected to the side wall of the screen changer.

[0009] As a further description of the above technical solution:

[0010] The cooling assembly includes a cooling fan, the sidewall of which is fixedly connected to the upper surface of the extruder body.

[0011] As a further description of the above technical solution:

[0012] The main air inlet is fixedly connected to the upper surface of the base, and a mold is provided on the side wall of the main air inlet.

[0013] As a further description of the above technical solution:

[0014] A circulating air inlet is fixedly connected to one side of the base, and a circulating air outlet is fixedly connected to the other side of the base.

[0015] As a further description of the above technical solution:

[0016] An air ring is fixedly connected to the side wall of the mold, and an IBC internal circulation device is installed inside the air ring.

[0017] As a further description of the above technical solution:

[0018] The cooling fans are provided in multiple units and arranged in a linear array.

[0019] As a further description of the above technical solution:

[0020] The mold is connected to the connector.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the motor starts and drives the screw to rotate through the reducer. The feeder sucks the material into the hopper. After being measured by the weighing meter, the material enters the screw for plasticization. The molten material resists the extruder body, is filtered by the screen changer, and then enters the mold through the connector. This solves the problems of traditional extruder screws being not resistant to high temperatures, wearing out quickly, and having inaccurate material addition. The above technical solution improves the plasticization quality and stability of the material.

[0023] 2. In this utility model, the material is extruded into a film bubble through the mold, cold air is drawn in through the main air inlet, the air ring is cooled from the outside, the IBC internal circulation device cools the inner surface, the circulating air inlet and circulating air outlet circulate the air, and the components work together to cool down, so that the film thickness is uniform and the cooling and shaping are completed. This solves the problems of slow cooling speed, uneven film thickness and inconsistent cooling inside and outside the film bubble in the traditional cooling method. The above technical solution improves the film cooling speed and thickness uniformity. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a PEEK film extruder proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of a PEEK film extruder proposed in this utility model;

[0026] Figure 3 This is a top view of a PEEK film extruder proposed in this utility model.

[0027] Figure 4 This is a schematic diagram of the extruder cooling structure of a PEEK film extruder proposed in this utility model.

[0028] Legend:

[0029] 1. Base; 2. Reducer; 3. Motor; 4. Weighing device; 5. Hopper; 6. Feeder; 7. Mold; 8. Air ring; 9. IBC internal circulation device; 10. Connector; 11. Screen changer; 12. Screw; 13. Cooling fan; 14. Main air inlet; 15. Circulating air inlet; 16. Circulating air outlet; 17. Extruder body. Detailed Implementation

[0030] 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.

[0031] Reference Figure 1 - Figure 4This utility model provides an embodiment of a PEEK film extruder. PEEK film is a high-performance thermoplastic engineering plastic film made from polyetheretherketone (PEEK) resin through extrusion, casting, and other processes. It possesses excellent high-temperature resistance, allowing for continuous use at 260℃ for extended periods. It also exhibits good mechanical strength, chemical stability, resistance to corrosion from various chemical media such as acids, alkalis, and oils, and good flame retardancy and electrical insulation. It is widely used in aerospace, electronics, automotive manufacturing, and medical fields. The extruder includes a base 1, a reducer 2 fixedly connected to the side wall of the base 1, a motor 3 mounted on the side wall of the reducer 2, and a material conveying assembly on the side wall of the reducer 2. An extruder body 17 is fixedly connected to the side wall of the base 1, and a cooling assembly is mounted on the side wall of the extruder body 17. The material conveying assembly includes a hopper 5. A screw 12 is fixedly connected to one side of the extruder body 17 and connected to the reducer 2. The screw 12 is made of C276 Hastelloy alloy, which has good high-temperature resistance, wear resistance, and corrosion resistance. Its function is to reduce the speed of the extruder. Driven by the machine 2 and the motor 3, the screw 12 rotates, pushing the material in the hopper 5 forward and plasticizing it. A weighing meter 4 is fixedly connected to the side wall of the screw 12. The weighing meter 4 is used to measure the weight of the material entering the screw 12 to ensure the accuracy of the material addition and thus ensure the stability of the extruded film quality. The side wall of the hopper 5 is fixedly connected to the side wall of the weighing meter 4. A suction machine 6 is fixedly connected to the side wall of the hopper 5. The suction machine 6 uses suction to transport the material from the storage area to the hopper 5 to achieve automated feeding. A screen changer 11 is fixedly connected to the other side of the extruder body 17. The screen changer 11 is used to filter impurities and unmelted particles in the molten material to ensure the purity and quality of the extruded film. A connector 10 is fixedly connected to the side wall of the screen changer 11. The connector 10 is used to connect subsequent components to allow the molten material to be smoothly transported to the mold 7.

[0032] Reference Figure 1 - Figure 4 The cooling assembly includes a cooling fan 13, which is fixedly connected to the upper surface of the extruder body 17. The cooling fan 13 is used to blow out cooling air to initially cool the extruded film and reduce its temperature. A main air inlet 14 is fixedly connected to the upper surface of the base 1. The main air inlet 14 is used to draw in cooling air and provide a cold air source for the cooling process. A mold 7 is provided on the side wall of the main air inlet 14. A circulating air inlet 15 is fixedly connected to one side of the base 1, and a circulating air outlet 16 is fixedly connected to the other side of the base 1. An air ring 8 is fixedly connected to the side wall of the mold 7. An IBC internal circulation device 9 is provided inside the air ring 8. The IBC internal circulation device 9 forms a cooling cycle inside the film bubble and uses the principle of hot air rising to cool the inner surface of the film. Combined with the external cooling of the air ring 8, it can greatly improve the film cooling speed and make the film thickness more uniform. Multiple cooling fans 13 are provided and arranged in a linear array. The mold 7 is connected to the connector 10.

[0033] Working principle: When the equipment is running, the motor 3 starts, and the screw 12 is rotated by the reducer 2 to reduce the speed and increase the torque. The feeder 6 sucks the material into the hopper 5. After being measured by the weighing meter 4, the material enters the screw 12. Under the action of the rotation of the screw 12, it is pushed forward and plasticized. The plasticized molten material reaches the inside of the extruder body 17. Impurities and unmelted particles are filtered out by the screen changer 11, and then enters the mold 7 through the connector 10.

[0034] After the material is extruded through the mold 7 to form a film bubble, the main air inlet 14 draws in cold air from the outside, and the air ring 8 blows out annular airflow to cool and shape the film bubble from the outside. The IBC internal circulation device 9 builds a cooling cycle inside the film bubble. By using the principle of hot air rising, the inner surface of the film bubble is cooled. The circulation air inlet 15 and the circulation air outlet 16 make the cooling air circulate. All components work together to quickly reduce the temperature of the film bubble, making the film thickness more uniform and completing the cooling and shaping process.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A PEEK film extruder, comprising a base (1), characterized in that: A speed reducer (2) is fixedly connected to the side wall of the base (1), a motor (3) is provided on the side wall of the speed reducer (2), a material conveying assembly is provided on the side wall of the speed reducer (2), an extruder body (17) is fixedly connected to the side wall of the base (1), and a cooling assembly is provided on the side wall of the extruder body (17). The feeding assembly includes a hopper (5), a screw (12) is fixedly connected to one side of the extruder body (17), the screw (12) is connected to the reducer (2), a weighing device (4) is fixedly connected to the side wall of the screw (12), the side wall of the hopper (5) is fixedly connected to the side wall of the weighing device (4), a suction machine (6) is fixedly connected to the side wall of the hopper (5), a screen changer (11) is fixedly connected to the other side of the extruder body (17), and a connector (10) is fixedly connected to the side wall of the screen changer (11).

2. The PEEK film extruder according to claim 1, characterized in that: The cooling assembly includes a cooling fan (13), the sidewall of which is fixedly connected to the upper surface of the extruder body (17).

3. A PEEK film extruder according to claim 2, characterized in that: The main air inlet (14) is fixedly connected to the upper surface of the base (1), and a mold (7) is provided on the side wall of the main air inlet (14).

4. A PEEK film extruder according to claim 3, characterized in that: A circulating air inlet (15) is fixedly connected to one side of the base (1), and a circulating air outlet (16) is fixedly connected to the other side of the base (1).

5. A PEEK film extruder according to claim 4, characterized in that: The mold (7) has a fixed connection to an air ring (8) on its side wall, and the air ring (8) is equipped with an IBC internal circulation device (9).

6. A PEEK film extruder according to claim 5, characterized in that: Multiple cooling fans (13) are provided and arranged in a linear array.

7. A PEEK film extruder according to claim 3, characterized in that: The mold (7) is connected to the connector (10).

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