Equipment for producing optical material FEP (fluorinated ethylene propylene) film

Abstract

The utility model relates to equipment for producing an optical material FEP (fluorinated ethylene propylene) film, which comprises an extruder, a machine head, a foam stabilizing frame, a herringbone plate and a traction component, a discharge port of the extruder is communicated with the machine head, the foam stabilizing frame is positioned above the machine head, the herringbone plate is positioned above the foam stabilizing frame, the traction component comprises an upper traction part and a lower traction part, the upper traction part is positioned above the herringbone plate, and the lower traction part is positioned above the herringbone plate. The lower traction part is located below the herringbone plate, the machine head comprises a rotating body, a rotating air ring, a mold, an inner circulation device and a cooling air ring, and a cooling device connected with the machine head is arranged beside the machine head. The equipment for producing the FEP film of the optical material can be used for producing the FEP film, so that FEP film production equipment is available in China, and the equipment has ultrahigh cost performance.

Description

Technical Field

[0001] The utility model relates to the technical field of FEP film production equipment, in particular to equipment for producing optical material FEP film. Background Art

[0002] FEP is a copolymer of tetrafluoroethylene and hexafluoropropylene, in which the content of hexafluoropropylene is about 15%. It is a modified material of polytetrafluoroethylene. Its full name is fluorinated ethylene propylene copolymer (perfluoroethylene propylene copolymer), abbreviated as polyperfluoroethylene propylene, also abbreviated as F46.

[0003] The crystalline melting point of FEP is 580°F and the density is 2.15g / CC (grams / cubic centimeter). It is a soft plastic with lower tensile strength, wear resistance and creep resistance than many engineering plastics. It is also chemically inert and has a low dielectric constant of about 2.1 over a wide temperature and frequency range. The material does not ignite and can prevent the spread of flames. It has excellent weather resistance and a low friction coefficient and can be used from low temperature to 392°F. The material can be used to make granular products for extrusion and molding, powders for fluidized beds and electrostatic coating, and aqueous dispersions. Semi-finished products include films, plates, rods and single fibers.

[0004] The application range of FEP is the same as that of PTFE, and it is used in electrical, radio, electronic, chemical industry, machinery manufacturing, refrigeration, medicine and other industrial sectors. FEP is used as thin film printing plates, wire and cable insulation, generator wire windings, electrical insulation parts (thin plates, rods, tubes, racks and insulators), corrosion-resistant structural products (oil-free lubricated mechanical parts), coatings and glass varnished cloth. Due to its excellent corrosion resistance, it can also be used in chemical working equipment, heat exchangers, distillation towers, pumps, valves, pipes, seals, pipe linings, laboratory transparent utensils, etc. FEP is also used as wire and cable insulation for various purposes, especially for wires and microelectronic components of electronic assembly circuits. FEP film is used for sealing capacitors, diaphragms, chemical equipment, and printing plates and flexible cables in the printing industry. FEP film can be welded, vacuum processed and formed, and can be coated with metal. Its surface does not need to be activated, and it can be bonded to metal and glass cloth under heating and pressure. FEP film has a particularly high resistance to gas permeability, so it is used as a diaphragm to isolate the sensitive element of the gas analyzer from the analyzed gas.

[0005] Due to the characteristics of FEP raw materials, technical difficulties such as unqualified flatness and rib cracking after film molding, difficulty in cooling and shaping FEP materials at high temperatures, and unqualified quality of finished products are prone to occur during the production process. Therefore, it is necessary to provide a device for producing FEP film. Utility Model Content

[0006] The utility model aims to design a device for producing an optical material FEP film, so that the device can realize the production of the FEP film.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A device for producing an optical material FEP film comprises an extruder, a die, a bubble stabilizing frame, a herringbone plate and a traction component, wherein the discharge port of the extruder is connected to the die, the bubble stabilizing frame is located above the die, the herringbone plate is located above the bubble stabilizing frame, the traction component comprises an upper traction and a lower traction, the upper traction is located above the herringbone plate, and the lower traction is located below the herringbone plate, the die comprises a rotating body, a rotating air ring, a mold, an internal circulation device and a cooling air ring, and a cooling device connected to the die is provided beside the die.

[0009] Furthermore, the above-mentioned equipment for producing optical material FEP film also includes an edge correction machine, and the edge correction machine is located between the upper traction and the lower traction.

[0010] Furthermore, in the above-mentioned equipment for producing optical material FEP film, the extruder includes an extrusion motor, a reducer, a suction machine, a hopper, a screw barrel, a cooling fan, a screen changer and a cover shell, the screw barrel is provided with a screw and a heater, the screw is transmission-connected to the extrusion motor through the reducer, the hopper is located below the suction machine, the hopper is communicated with the screw barrel, the cooling fan is connected to the cover shell, and the screen changer is located at the discharge end of the extruder.

[0011] Furthermore, in the above-mentioned equipment for producing optical material FEP film, the die head and the screen changer are made of Hastelloy CH-113 steel.

[0012] Furthermore, in the above-mentioned equipment for producing optical material FEP film, the screw barrel and the screw are made of GH4169 or CV276 alloy material.

[0013] Furthermore, the above-mentioned equipment for producing optical material FEP film also includes a PLC controller, electrical components and an industrial control touch screen.

[0014] Furthermore, in the above-mentioned equipment for producing optical material FEP film, the cooling device includes an inner air inlet fan, an inner air outlet fan and an outer air inlet fan.

[0015] Furthermore, in the above-mentioned equipment for producing optical material FEP film, the upper traction and the lower traction respectively include a traction motor, a traction rubber roller, a traction steel roller, a traction cylinder and a traction bracket.

[0016] Furthermore, the above-mentioned equipment for producing optical material FEP film is also provided with a winding component next to the lower traction, and the winding component includes a clamping roller, a winding cylinder, a tension monitoring device, a winding motor, a friction rubber roller, a flip knife holder, a cutting device, a robot gripping device, a material receiving device, an air expansion shaft and a unloading device.

[0017] Furthermore, in the above-mentioned equipment for producing optical material FEP film, the bubble stabilizing frame includes a bubble stabilizing motor, a bubble stabilizing guide roller, a bubble stabilizing bracket and an ultrasonic detection device, the ultrasonic detection device is located on the lower side of the bubble stabilizing bracket, and three ultrasonic detection devices are provided.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a device for producing optical material FEP film, wherein the raw materials are sequentially passed through an extruder, a die, a bubble stabilizing frame, a herringbone plate and a traction component, and the production of FEP film is realized through the upper blowing film blowing process and the IBC internal circulation. The rotating air ring of the die head rotates 360 degrees to improve the flatness of the film after forming and avoid the rib bursting phenomenon. The film bubble controls the humidity through a cooling device to solve the high-temperature cooling and shaping problem of the FEP material. The device for producing optical material FEP film can produce FEP film, so that the country has FEP film production equipment with super high cost performance. In addition to FEP materials, this equipment can also be used to produce ordinary films. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a front view of the overall structure of the utility model;

[0021] Figure 2 It is a three-dimensional diagram of the overall structure of the utility model;

[0022] Figure 3 It is a three-dimensional diagram of the overall structure of the utility model from another perspective;

[0023] Figure 4 It is a side view of the overall structure of the utility model;

[0024] The names of the components marked in the figure are as follows:

[0025] 1. Extruder; 11. Extrusion motor; 12. Speed ​​reducer; 13. Suction machine; 14. Hopper; 15. Screw barrel; 16. Screen changer; 2. Die head; 21. Rotating body; 22. Rotating air ring; 23. Cooling air ring; 3. Bubble stabilizer; 4. Herringbone plate; 5. Edge corrector; 6. Traction component; 61. Upper traction; 62. Lower traction; 621. Tension monitoring device; 622. Robot gripping device; 623. Material receiving device; 624. Unloading device. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0027] Example: Please refer to Figure 1-4 , a device for producing optical material FEP film, including an extruder 1, a head 2, a bubble stabilizing frame 3, a herringbone plate 4, a traction component 6, a winding component and an edge corrector 5, the discharge port of the extruder 1 is connected with the head 2, the bubble stabilizing frame 3 is located above the head 2, the herringbone plate 4 is located above the bubble stabilizing frame 3, the traction component 6 includes an upper traction 61 and a lower traction 62, the upper traction 61 is located above the herringbone plate 4, the lower traction 62 is located below the herringbone plate 4, and the edge corrector 5 is located between the upper traction 61 and the lower traction 62, specifically, the edge corrector 5 is located on one side of the bubble stabilizing frame 3, and the winding component is located on one side of the lower traction 62. This equipment can realize the upper blowing film process. Furthermore, this equipment also includes a PLC controller, electrical components and an industrial control touch screen, which can be set on the shell of the winding component, realizing intelligent automatic control, convenient operation, and convenient remote monitoring and maintenance.

[0028] The extruder 1 includes an extrusion motor 11, a reducer 12, a suction machine 13, a hopper 14, a screw barrel 15, a cooling fan, a screen changer 16 and a housing. A screw and a heater are arranged in the screw barrel 15. The extrusion motor 11 is connected to the reducer 12, and the screw is connected to the reducer 12. The extrusion motor 11 and the screw are connected through the reducer 12. The extrusion motor 11 drives the reducer 12 to rotate the screw. The heater can adopt a conventional hot air heating system. After the heater heats the screw barrel 15, the screw barrel 15 transfers heat to the screw, and the solid particle raw material can be melted when the screw rotates. The screw barrel 15 is connected to the hopper 14, and the upper end of the hopper 14 is connected to the suction machine 13. The solid particle raw material enters the hopper 14 from the suction machine 13 and then enters the screw barrel 15. The cover is located outside the screw barrel 15 and is fixedly connected to a cooling fan. The screen changer 16 is located at the discharge end of the extruder 1 and is provided with a filter screen for filtering impurities in the melted solid particle raw material.

[0029] The head 2 includes a rotating body 21, a rotating air ring 22, a mold, an internal circulation device and a cooling air ring 23. A cooling device connected to the head 2 is also provided on one side of the head 2, and the cooling device includes an internal air inlet fan, an internal air outlet fan and an external air inlet fan. The rotating air ring 22 is connected to a rotating motor so that the rotating air ring 22 can rotate 360 ​​degrees to improve the flatness of the film after forming and reduce the phenomenon of cracking. The rotating air ring 22 and the cooling air ring 23 are respectively provided with a plurality of air inlets and a plurality of air outlets. The mold adopts a central spiral structure IBC internal circulation mode, and is provided with a plurality of air inlets and a plurality of air outlets to realize the synchronous operation of the rotation of the head 2 and the internal cooling cycle of the film bubble, thereby improving the film cooling and forming speed, eliminating the odor of the high-temperature air inside the film bubble, and improving the light transmittance of the film. After the raw material enters the die head 2, an annular mold base is formed in the mold. Air is blown in by the inner air inlet fan to close the end of the mold base and cool it to form a film bubble. The larger the air intake from the inner air inlet fan, the larger the film bubble, and vice versa. The inner air outlet fan discharges air. The larger the inner air outlet, the smaller the film bubble is blown, and vice versa. The outer air inlet fan cools and shapes the film bubble. The inner air inlet fan, inner air outlet fan and outer air inlet fan are used together to blow the annular mold base at the mold outlet into a film bubble.

[0030] The bubble stabilizing frame 3 includes a bubble stabilizing motor, a bubble stabilizing guide roller, a bubble stabilizing frame and an ultrasonic detection device. The ultrasonic detection device is located at the lower side of the bubble stabilizing frame, and three ultrasonic detection devices are provided. The ultrasonic detection device can use an ultrasonic sensor to monitor the size of the film bubble in real time, and the PLC module PID closed-loop controls the analog quantity of the frequency converter, thereby controlling the fan speed and air volume, and realizing the cycle follow-up control of the internal air intake and the internal air outlet, so as to discharge the high-temperature heat inside the film bubble, and allow the external cold air to enter the film bubble, and realize the alternating output of hot and cold, thereby solving the problem that the FEP material is difficult to cool and shape at high temperature. When the film bubble is formed and enters the traction component 6 vertically from bottom to top, it is supported and stabilized by the bubble stabilizing frame 3.

[0031] The herringbone plate 4 includes a Teflon carbon fiber guide roller, an adjustment device and a support frame. The angle of the herringbone plate 4 can flatten the circular film bubble from the bubble stabilizing frame 3 to form a flat film. The opening and closing range of the bubble stabilizing frame 3 and the angle of the herringbone plate 4 can be determined according to the diameter of the film bubble.

[0032] The upper traction 61 and the lower traction 62 respectively include a traction motor, a traction rubber roller, a traction steel roller, a traction cylinder and a traction bracket. After the film bubble enters the traction rubber roller and the traction steel roller, a two-layer film is formed. When the traction speed is fast, the film thickness becomes thinner, otherwise the film thickness becomes thicker.

[0033] The winding component includes a clamping roller, a winding cylinder, a tension monitoring device 621, a winding motor, a friction rubber roller, a flip knife holder, a cutting device, a manipulator grabbing device 622, a receiving device 623, an air expansion shaft and a discharge device 624. After the film enters the winding component, the tension of the film can be monitored and controlled online in real time through the tension monitoring device 621. When the film wound by the air expansion shaft reaches the set number of meters, the flip knife holder automatically flips and cuts the film, the discharge device 624 automatically discharges, and the manipulator grabbing device 622 automatically grabs the air expansion shaft to replace manual operation, realize automation and intelligence, reduce labor and reduce costs. Furthermore, an auxiliary traction device is added to the winding component to avoid the large resistance to pulling the film and the film loosening caused by the cutting failure and being rolled into the lower traction 62, resulting in the loss of raw materials and the disadvantages of manual operation caused by the shutdown operation.

[0034] The main body of the equipment is arranged on a frame, which is welded and assembled by steel structural profiles, and is provided with a platform and stairs. A bubble stabilizing frame 3, a herringbone plate 4, an upper traction 61 and an edge correcting machine 5 are fixedly installed at corresponding positions. The edge correcting machine 5 is fixedly connected to the frame, and includes a servo motor, an edge correcting motor, a detection device and an edge correcting guide roller. The edge correcting machine 5 is used to correct the left and right offset position of the edge of the film to prevent the film from shaking and causing uneven edges after being rolled into a roll material in actual production.

[0035] Furthermore, the die head 2 and the screen changer 16 of the device are made of Hastelloy CH-113 steel, which is a special high temperature resistant steel. The screw barrel 15 and the screw are made of GH4169 or CV276 alloy material.

[0036] Working principle of this embodiment: The working process of a device for producing optical material FEP film provided in this embodiment is as follows: solid particle raw materials enter the hopper 14 from the suction machine 13, the extrusion motor 11 drives the reducer 12 to rotate the screw, the heater heats the screw barrel 15, the screw barrel 15 transfers heat to the screw, and the solid particle raw materials are melted after the screw rotates. The solid particle raw materials are filtered through the filter screen on the screen changer 16 to filter impurities, and then the raw materials enter the head 2; the raw materials enter the flow channel inside the mold for distribution to form an annular mold base, and the rotating air ring 22 A rotating motor is connected so that the rotating air ring 22 can rotate 360 ​​degrees to improve the flatness of the film after forming and reduce the cracking phenomenon. The inner air inlet fan, the inner air outlet fan and the outer air inlet fan are used together to blow the annular mold base at the mold outlet into a film bubble; when the film bubble enters the traction component 6 vertically from bottom to top after forming, it is supported and stabilized by the bubble stabilizing frame 3. The three ultrasonic detection devices on the lower side of the bubble stabilizing frame monitor the size of the film bubble in real time, and the PLC module PID closed-loop controls the inverter analog quantity, thereby controlling the fan speed and air volume, and realizing the circulation of internal air inlet and internal air outlet. Follow-up control solves the problem that FEP materials are difficult to cool and shape at high temperatures; the angle of the herringbone plate 4 can flatten the circular film bubble from the bubble stabilizing frame 3 to form a flat film, and the opening and closing range of the bubble stabilizing frame 3 and the angle of the herringbone plate 4 can be determined according to the diameter of the film bubble; the film bubble first enters the upper traction 61 and then the lower traction 62. After the film bubble enters the traction rubber roller and traction steel roller of the upper traction 61 or the lower traction 62, a flat two-layer film is formed. When the traction speed is fast, the film stretching thickness becomes thinner, otherwise the film thickness becomes thicker; the edge correction machine 5 corrects the left and right deviation of the film edge The position of the film is to prevent the uneven edge of the film after it is rolled into a roll material due to shaking; after the film enters the winding component, the tension of the film can be monitored and controlled online in real time through the tension monitoring device 621. When the film rolled by the air expansion shaft reaches the set number of meters, the flip knife holder automatically flips and cuts the film, the unloading device 624 automatically unloads, and the manipulator grabbing device 622 automatically grabs the air expansion shaft. The auxiliary traction device avoids the large resistance to pulling the film and the film loosening caused by cutting failure and being rolled into the lower traction 62, resulting in the loss of raw materials and the disadvantages of manual operation caused by downtime. The equipment for producing optical material FEP film can produce FEP film, so that the country has FEP film production equipment, and due to the configuration of the structure, the selection of materials and the product quality, it has a super high cost performance. In addition to FEP materials, this equipment can also be used to produce ordinary films.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0038] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A device for producing FEP film of optical material, characterized in that: The invention comprises an extruder (1), a die (2), a bubble stabilizing frame (3), a herringbone plate (4) and a traction component (6), wherein the discharge port of the extruder (1) is connected to the die (2), the bubble stabilizing frame (3) is located above the die (2), the herringbone plate (4) is located above the bubble stabilizing frame (3), the traction component (6) comprises an upper traction (61) and a lower traction (62), the upper traction (61) is located above the herringbone plate (4), and the lower traction (62) is located below the herringbone plate (4), the die (2) comprises a rotating body (21), a rotating air ring (22), a mold, an internal circulation device and a cooling air ring (23), and a cooling device connected to the die (2) is provided beside the die (2).

2. The device for producing an optical material FEP film according to claim 1, characterized in that: It also includes an edge correcting machine (5), and the edge correcting machine (5) is located between the upper traction (61) and the lower traction (62).

3. The device for producing an optical material FEP film according to claim 1, characterized in that: The extruder (1) comprises an extrusion motor (11), a speed reducer (12), a suction machine (13), a hopper (14), a screw barrel (15), a cooling fan, a screen changer (16) and a casing. A screw and a heater are arranged in the screw barrel (15). The screw is connected to the extrusion motor (11) through the speed reducer (12). The hopper (14) is located below the suction machine (13). The hopper (14) is connected to the screw barrel (15). The cooling fan is connected to the casing. The screen changer (16) is located at the discharge end of the extruder (1).

4. The device for producing an optical material FEP film according to claim 3, characterized in that: The die head (2) and the screen changer (16) are made of Hastelloy CH-113 steel.

5. The device for producing an optical material FEP film according to claim 3, characterized in that: The screw barrel (15) and the screw are made of GH4169 or CV276 alloy material.

6. The device for producing optical material FEP film according to claim 1, characterized in that: It also includes PLC controllers, electrical components and industrial control touch screens.

7. The device for producing optical material FEP film according to claim 1, characterized in that: The cooling device comprises an inner air inlet fan, an inner air outlet fan and an outer air inlet fan.

8. The device for producing optical material FEP film according to claim 1, characterized in that: The upper traction (61) and the lower traction (62) respectively comprise a traction motor, a traction rubber roller, a traction steel roller, a traction cylinder and a traction bracket.

9. The device for producing optical material FEP film according to claim 1, characterized in that: A winding component is also provided next to the lower traction (62), and the winding component includes a clamping roller, a winding cylinder, a tension monitoring device (621), a winding motor, a friction rubber roller, a turning knife holder, a cutting device, a robot gripping device (622), a material receiving device (623), an air expansion shaft and a material unloading device (624).

10. The device for producing optical material FEP film according to claim 1, characterized in that: The foam stabilizing frame (3) comprises a foam stabilizing motor, a foam stabilizing guide roller, a foam stabilizing support and an ultrasonic detection device, wherein the ultrasonic detection device is located at the lower side of the foam stabilizing support, and three ultrasonic detection devices are provided.

Images