A pfa twin channel coextrusion cast film apparatus

Abstract

The utility model relates to the field of cast film preparation technology provides a kind of PFA double runner coextrusion cast film equipment, including cast film component: the cast film component includes rack, control box, servo motor, double hopper and double screw extruder;The control box is fixedly connected to the outside of rack, and double screw extruder is fixedly connected to one end of rack, and double hopper is fixedly connected to the top of double screw extruder, and servo motor is fixedly connected to the outside of double hopper.The utility model sets up the structure of discharging, through the cooperation of main motor and discharging cylinder, when discharging cylinder rotates and discharges in double hopper, spring plate can repeatedly knock the outside of conducting rod under the influence of elastic force, can assist staff to PFA particle discharging, prevent PFA particle from adhering at discharging place at the same time, avoid causing resource waste, prevent the phenomenon of plugging at discharging place from appearing.

Description

Technical Field

[0001] This utility model relates to the field of cast film preparation technology, and in particular to a PFA dual-channel co-extrusion cast film equipment. Background Technology

[0002] The PFA dual-channel co-extrusion casting film equipment is a specialized piece of equipment used to produce high-performance PFA multilayer composite casting films. It can produce films with specific properties by co-extruding two PFA materials with different properties or PFA with other materials through a dual-channel co-extrusion process.

[0003] In existing PFA dual-channel co-extrusion casting film equipment, although the surface of PFA particles is smooth during the feeding process, they are prone to attracting trace amounts of dust from the air due to static electricity during storage and transportation, or causing slight adhesion between particles due to changes in ambient humidity. When PFA particles pass through the feeding channel, they are easily affected by frictional static electricity and adhere to the inner wall of the channel, thus causing blockage at the feeding point. Utility Model Content

[0004] The purpose of this invention is to provide a PFA dual-channel co-extrusion casting film equipment to solve the defect that PFA particles easily adhere and clog the feeding point during the feeding process of an existing PFA dual-channel co-extrusion casting film equipment.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a PFA dual-channel co-extrusion casting film equipment, comprising;

[0006] Cast film assembly: The cast film assembly includes a frame, control box, servo motor, dual feed hoppers and twin screw extruder;

[0007] The control box is fixedly connected to the outside of the frame, the twin-screw extruder is fixedly connected to one end of the frame, the twin feed hoppers are fixedly connected above the twin-screw extruder, and the servo motor is fixedly connected to the outside of the twin feed hoppers.

[0008] The feeding structure includes a main motor, a feeding cylinder, and a half gear;

[0009] The main motor is fixedly connected to the outside of the double feed hopper, the feed cylinder is fixedly connected to the output end of the main motor, and the half gear is fixedly connected to one end of the feed cylinder.

[0010] Preferably, the feeding structure further includes a rotating gear, a spring plate, and a transmission rod;

[0011] The spring plate is rotatably connected to the outside of the double feed hopper, the rotating gear is fixedly connected to one end of the spring plate, and the transmission rod is fixedly connected to the outside of the material discharge point of the double feed hopper.

[0012] Preferably, the half gear and the rotating gear are meshed, and one end of the spring plate is in contact with the outside of the guide rod.

[0013] Preferably, the output shaft of the main motor is fixedly connected to the feed cylinder via a coupling.

[0014] Preferably, the cast film assembly further includes a housing, a cooling roller, and a hot air dryer;

[0015] The box body is fixedly connected to the bottom of the double feed hopper, the cooling roller is fixedly connected to the front end of the frame, and the hot air dryer is installed inside the box body.

[0016] Preferably, it also includes a maintenance structure;

[0017] The maintenance structure includes a connecting groove, a pull plate, a slide rail, and a sliding plate;

[0018] The connecting groove is opened inside the pull plate, the slide rail is fixedly connected to both sides of the inner wall of the connecting groove, and the slide plate is slidably connected to the inside of the box.

[0019] Preferably, the maintenance structure further includes a toothed plate, a movable gear, a spring coil, a pull rope, and a connecting block;

[0020] The toothed plate is fixedly connected to both sides of the slide plate, the spring coil is rotatably connected to both sides of the inner wall of the box, the movable gear is fixedly connected to one end of the spring coil, the pull rope is wound inside the spring coil, and the connecting block is fixedly connected to the rear of the pull plate.

[0021] The advantages of the PFA dual-channel co-extrusion casting film equipment provided by this utility model are as follows:

[0022] This utility model, by setting up a feeding structure, through the cooperation of the main motor and the feeding cylinder, allows the feeding cylinder to rotate and feed material inside the double feed hopper, while the spring plate, under the influence of elasticity, repeatedly strikes the outside of the transmission rod. This can assist the operator in feeding PFA granules, while preventing PFA granules from adhering to the feeding point, avoiding resource waste and preventing blockage at the feeding point.

[0023] Based on the aforementioned beneficial effects, a maintenance structure is provided. Through the auxiliary cooperation between the connecting groove and the pull plate, the pull plate can be pulled upwards, causing the connecting block to stretch the pull rope, thereby causing the movable gear to rotate and mesh with the toothed plate, allowing the slide plate to slide out from the inside of the box. This not only assists the staff in inspecting and maintaining the hot air dryer, but also provides them with ample maintenance space. Attached Figure Description

[0024] Figure 1 This is an axonometric view of the present invention;

[0025] Figure 2 This is a three-dimensional schematic diagram of the feeding hopper of this utility model;

[0026] Figure 3 This is a three-dimensional schematic diagram of the pull plate of this utility model;

[0027] Figure 4 This is a three-dimensional disassembled schematic diagram of the present invention;

[0028] Figure 5 This is a three-dimensional sectional view of the box body of this utility model.

[0029] Explanation of the reference numerals in the figure:

[0030] 11. Frame; 12. Control box; 13. Servo motor; 14. Double feed hopper; 15. Box body; 16. Twin-screw extruder; 17. Cooling roller; 18. Hot air dryer;

[0031] 21. Main motor; 22. Feed cylinder; 23. Half gear; 24. Rotating gear; 25. Spring plate; 26. Conductor rod;

[0032] 31. Connecting groove; 32. Pull plate; 33. Slide rail; 34. Slide plate; 35. Toothed plate; 36. Movable gear; 37. Spring coil; 38. Pull rope; 39. Connecting block. Detailed Implementation

[0033] 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.

[0034] Please see Figures 1-2 This utility model provides a PFA dual-channel co-extrusion casting film equipment, comprising:

[0035] Cast film assembly: The cast film assembly includes a frame 11, a control box 12, a servo motor 13, a double feed hopper 14, and a twin-screw extruder 16;

[0036] The control box 12 is fixedly connected to the outside of the frame 11, the twin-screw extruder 16 is fixedly connected to one end of the frame 11, the twin feed hopper 14 is fixedly connected above the twin-screw extruder 16, and the servo motor 13 is fixedly connected to the outside of the twin feed hopper 14.

[0037] The cast film assembly also includes a housing 15, a cooling roller 17, and a hot air dryer 18;

[0038] The box body 15 is fixedly connected to the bottom of the double feed hopper 14, the cooling roller 17 is fixedly connected to the front end of the frame 11, and the hot air dryer 18 is installed inside the box body 15.

[0039] In this process, after the two types of PFA granules are poured into the interior of the dual feed hopper 14, the twin-screw extruder 16 is started to dry for four to six hours to reduce the moisture content of the raw materials and prevent bubbles from forming on the film surface. The dual feed hopper 14 feeds the raw materials into the interior of the corresponding twin-screw extruder 16 at a uniform speed. The feeding speed is controlled by the servo motor 13 to ensure a stable supply of the two raw materials. The molten film extruded from the die head is pulled to the cooling roller 17, where it is cooled and solidified quickly. The film is then tightly adhered to the surface of the cooling roller 17 to eliminate wrinkles and bubbles.

[0040] The feeding structure includes a main motor 21, a feeding cylinder 22, and a half gear 23;

[0041] The main motor 21 is fixedly connected to the outside of the double feed hopper 14, the feed cylinder 22 is fixedly connected to the output end of the main motor 21, and the half gear 23 is fixedly connected to one end of the feed cylinder 22;

[0042] The feeding structure also includes a rotating gear 24, a spring plate 25, and a transmission rod 26;

[0043] The spring plate 25 is rotatably connected to the outside of the double feed hopper 14, the rotating gear 24 is fixedly connected to one end of the spring plate 25, and the transmission rod 26 is fixedly connected to the outside of the material discharge point of the double feed hopper 14.

[0044] The output shaft of the main motor 21 is fixedly connected to the feed cylinder 22 via a coupling. The half gear 23 and the rotating gear 24 are meshed. One end of the spring plate 25 is in contact with the outside of the guide rod 26.

[0045] With the auxiliary cooperation between the main motor 21 and the feeding cylinder 22, while the feeding cylinder 22 is rotating and feeding material inside the double feed hopper 14, the spring plate 25 can be repeatedly struck on the outside of the transmission rod 26 under the influence of elastic force.

[0046] Working principle: When the worker feeds the PFA granules;

[0047] First, by starting the main motor 21, the output shaft of the main motor 21 can be driven by the coupling, and the feeding cylinder 22 can rotate inside the double feeding hopper 14 to feed materials. At the same time, the half gear 23 fixedly connected to one end of the feeding cylinder 22 can rotate accordingly.

[0048] Next, the half gear 23 and the rotating gear 24 can be meshed, so that the spring plate 25, which is fixedly connected to the rotating gear 24 at one end, can rotate. When the half gear 23 and the rotating gear 24 are misaligned, the spring plate 25 can be reset under the influence of the elastic force and knock the outside of the transmission rod 26. The vibration generated by the knocking can shake off the PFA particles attached to the feeding point.

[0049] This step assists workers in feeding PFA granules, while preventing PFA granules from adhering to the feeding point, thus avoiding resource waste and preventing blockages at the feeding point.

[0050] Please see Figure 3-5 As shown, this embodiment, based on the above embodiment, also includes a maintenance structure;

[0051] The maintenance structure includes a connecting groove 31, a pull plate 32, a slide rail 33, and a sliding plate 34;

[0052] The connecting groove 31 is opened inside the pull plate 32, the slide rail 33 is fixedly connected to both sides of the inner wall of the connecting groove 31, and the slide plate 34 is slidably connected to the inside of the box 15.

[0053] The maintenance structure also includes a toothed plate 35, a movable gear 36, a spring coil 37, a pull rope 38, and a connecting block 39;

[0054] The toothed plate 35 is fixedly connected to both sides of the slide plate 34, the spring coil 37 is rotatably connected to both sides of the inner wall of the box 15, the movable gear 36 is fixedly connected to one end of the spring coil 37, the pull rope 38 is wound inside the spring coil 37, and the connecting block 39 is fixedly connected to the rear of the pull plate 32.

[0055] The slide rail 33 is used to provide space for guiding the sliding of the toothed plate 35. The toothed plate 35 and the movable gear 36 are meshed. The spring coil 37 is used to wind up the pull rope 38. The pull rope 38 and the connecting block 39 are fixedly connected. The connecting groove 31 is used to provide space for the sliding of the pull plate 32.

[0056] With the auxiliary cooperation between the connecting groove 31 and the pull plate 32, the pull plate 32 can be pulled upwards, while the connecting block 39 stretches the pull rope 38, thereby causing the movable gear 36 to rotate and mesh with the toothed plate 35, so that the slide plate 34 slides out from the inside of the box 15.

[0057] Working principle: When the staff is inspecting and maintaining the hot air dryer 18;

[0058] First, pulling the pull plate 32 inside the connecting groove 31 upwards can cause the pull plate 32 to slide upwards, while driving the connecting block 39 fixedly connected at the rear to stretch the pull rope 38. This causes the spring coil 37, which has the pull rope 38 wound inside, to rotate under the influence of the tension. This can cause the spring coil 37 to rotate, while driving the movable gear 36 fixedly connected at one end to rotate.

[0059] Next, the movable gear 36 and the toothed plate 35 can be meshed and connected, so that the slide plate 34, which is fixedly connected to the toothed plate 35 at both ends, slides out from the inside of the box 15, which makes it convenient for staff to inspect and maintain the hot air dryer 18 installed on the top of the slide plate 34.

[0060] This step not only assists staff in inspecting and maintaining the hot air dryer 18, but also provides them with ample space for maintenance.

[0061] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A PFA dual-channel co-extrusion casting film equipment, characterized in that, include: Cast film assembly: The cast film assembly includes a frame (11), a control box (12), a servo motor (13), a double feed hopper (14), and a twin-screw extruder (16); The control box (12) is fixedly connected to the outside of the frame (11), the twin-screw extruder (16) is fixedly connected to one end of the frame (11), the twin feed hopper (14) is fixedly connected above the twin-screw extruder (16), and the servo motor (13) is fixedly connected to the outside of the twin feed hopper (14). The feeding structure includes a main motor (21), a feeding cylinder (22), and a half gear (23); The main motor (21) is fixedly connected to the outside of the double feed hopper (14), the feed cylinder (22) is fixedly connected to the output end of the main motor (21), and the half gear (23) is fixedly connected to one end of the feed cylinder (22).

2. The PFA dual-channel co-extrusion casting film equipment according to claim 1, characterized in that, The feeding structure also includes a rotating gear (24), a spring plate (25), and a transmission rod (26); The spring plate (25) is rotatably connected to the outside of the double feed hopper (14), the rotating gear (24) is fixedly connected to one end of the spring plate (25), and the transmission rod (26) is fixedly connected to the outside of the material discharge point of the double feed hopper (14).

3. The PFA dual-channel co-extrusion casting film equipment according to claim 2, characterized in that, The half gear (23) and the rotating gear (24) are meshed together, and one end of the spring plate (25) is in contact with the outside of the guide rod (26).

4. The PFA dual-channel co-extrusion casting film equipment according to claim 2, characterized in that, The output shaft of the main motor (21) is fixedly connected to the feed cylinder (22) via a coupling.

5. A PFA dual-channel co-extrusion casting film equipment according to claim 1, characterized in that, The cast film assembly also includes a housing (15), a cooling roller (17), and a hot air dryer (18); The box body (15) is fixedly connected to the bottom of the double feed hopper (14), the cooling roller (17) is fixedly connected to the front end of the frame (11), and the hot air dryer (18) is installed inside the box body (15).

6. The PFA dual-channel co-extrusion casting film equipment according to claim 1, characterized in that, It also includes maintenance structures; The maintenance structure includes a connecting groove (31), a pull plate (32), a slide rail (33), and a sliding plate (34); The connecting groove (31) is opened inside the pull plate (32), the slide rail (33) is fixedly connected to both sides of the inner wall of the connecting groove (31), and the slide plate (34) is slidably connected to the inside of the box (15).

7. A PFA dual-channel co-extrusion casting film equipment according to claim 6, characterized in that, The maintenance structure also includes a toothed plate (35), a movable gear (36), a spring coil (37), a pull rope (38), and a connecting block (39); The toothed plate (35) is fixedly connected to both sides of the slide plate (34), the spring coil (37) is rotatably connected to both sides of the inner wall of the box (15), the movable gear (36) is fixedly connected to one end of the spring coil (37), the pull rope (38) is wound inside the spring coil (37), and the connecting block (39) is fixedly connected to the rear of the pull plate (32).

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