Calendering device for preventing polytetrafluoroethylene strip from being twisted

Abstract

The utility model relates to a calendering device capable of preventing a polytetrafluoroethylene strip from being twisted, which belongs to the technical field of calendering equipment and comprises a calendering machine body, a water tank, a support I, a conveying carrier roller I, a conveying carrier roller II, a conveying motor, a conveying compression roller, a heat preservation upper half sleeve and a heat preservation lower half sleeve, liquid conveying cavities are formed in the inner walls of the upper half heat preservation sleeve and the lower half heat preservation sleeve, liquid spraying holes are evenly formed in the inner side walls of the upper half heat preservation sleeve and the lower half heat preservation sleeve, and the liquid conveying cavities are connected with liquid conveying structures for conveying liquid in the water tank into the liquid conveying cavities. The first conveying carrier roller is arranged on the supporting plate at the top of the water tank, so that a polytetrafluoroethylene strip extruded by an extruder naturally droops and falls into the water tank to be subjected to primary heat preservation treatment, and then the polytetrafluoroethylene strip is guided into the heat preservation upper half sleeve and the heat preservation lower half sleeve to be subjected to spraying heat preservation treatment and conveyed; and the polytetrafluoroethylene extrusion strip is better prevented from being twisted.

Description

Technical Field

[0001] The utility model relates to a calendering device for preventing polytetrafluoroethylene strips from twisting, and belongs to the technical field of calendering equipment. Background Art

[0002] During the production of polytetrafluoroethylene film, a calendering device is required to calender the polytetrafluoroethylene strips extruded from the extruder. Currently, after the extruder extrudes the polytetrafluoroethylene raw material into strips, the polytetrafluoroethylene strips need to be coiled in a water tank for insulation treatment before being calendered into polytetrafluoroethylene film. The current equipment has the following disadvantages: the extruded polytetrafluoroethylene strips are easily twisted when being coiled, and the twisted extruded strips are easily calendered to cause instability in the width and thickness of the calendered base film. Utility Model Content

[0003] The utility model provides a calendering device for preventing polytetrafluoroethylene strips from twisting, which solves the problems in the above-mentioned background technology.

[0004] The utility model relates to a calendering device for preventing polytetrafluoroethylene strips from twisting, comprising a calendering machine body, a water tank is arranged between the calendering machine body and an extruder, a support plate is fixed on the top of the water tank, an electric heater is arranged in the water tank, a bracket one is fixed on the left end of the support plate, a conveying roller one is rotatably mounted on the bracket one, a bracket two is arranged in the middle of the support plate, a conveying roller two is rotatably mounted on the bracket two, a conveying motor is fixed at the rear end of the conveying roller two, a conveying pressure roller rotatably mounted on the bracket two is arranged above the conveying roller two, a heat-insulating upper half cover and a heat-insulating lower half cover which cooperate with each other are arranged on the left and right sides of the heat-insulating upper half cover and the heat-insulating lower half cover, and semicircular arc-shaped inlet The outlet, the front and rear outer walls of the upper and lower insulation sleeves are provided with connecting flanges, the connecting flanges are provided with mounting holes, the mounting holes are provided with adjusting studs, and the upper and lower adjusting studs of the connecting flanges are provided with adjusting nuts. The inner walls of the upper and lower insulation sleeves are provided with infusion cavities, and the inner side walls of the upper and lower insulation sleeves are evenly provided with a plurality of spray holes that are connected to the infusion cavities and spray toward the center. The upper and lower insulation sleeves are connected with infusion hoses, the lower ends of the infusion hoses are connected with infusion tubes, and the other ends of the infusion tubes are connected to the lower part of the water tank. The infusion tubes are provided with an infusion pump, and a discharge tube is fixed to the bottom of the lower insulation sleeve, and the bottom of the discharge tube passes through the support plate and extends into the water tank.

[0005] As a preferred embodiment, conveying grooves are provided on the outer circumferences of the conveying roller 2 and the conveying roller 1, and a conveying pressure groove is provided on the middle outer side wall of the conveying pressure roller, so as to conveniently limit the conveying of the polytetrafluoroethylene strip.

[0006] As a preferred embodiment, a mounting plate is fixed on the left side of the calender body, a mounting frame is fixed on the mounting plate, and guide rollers and guide pressure rollers are rotatably mounted on the mounting frame to guide and limit the polytetrafluoroethylene strips entering the calender body for calendering.

[0007] As a preferred embodiment, adjusting sliders are rotatably installed at both ends of the guide pressure roller, and an adjusting slide groove cooperating with the adjusting slider is provided on the mounting frame. An adjusting screw rod is rotatably installed on the top of the adjusting slider, and an adjusting screw sleeve is provided on the adjusting screw rod. The adjusting screw sleeve is fixed on the mounting frame, and a rotating handle is fixed on the top of the adjusting screw rod, which can adjust the height of the guide pressure roller, thereby adjusting the pressing force on the polytetrafluoroethylene strip.

[0008] As a preferred embodiment, a cleaning ring tube is provided on the left side of the guide roller, and a plurality of air jet holes for spraying hot air toward the extruded strip are obliquely provided on the left outer wall of the cleaning ring tube, and the cleaning ring tube is fixedly connected to the hot air inlet pipe, and a support rod is fixed at the bottom of the cleaning ring tube, and the support rod is fixed on the mounting plate, and hot air can be sprayed through the air jet holes on the cleaning ring tube to clean the outer wall of the polytetrafluoroethylene strip and remove sticky dust and droplets.

[0009] The utility model has the following beneficial effects:

[0010] A conveying roller 1 is arranged on the support plate on the top of the water tank, so that the polytetrafluoroethylene strips extruded by the extruder can naturally droop and fall into the water tank for preliminary insulation treatment, and then be guided into the insulation upper half and the insulation lower half for spray insulation treatment and transportation. The polytetrafluoroethylene strips do not need to be coiled in the water tank, which can better avoid twisting of the polytetrafluoroethylene extruded strips, and the conveying speed is controlled by the conveying motor connected to the conveying roller 2 during transportation, so that the conveying speed can better adapt to the extrusion speed and the calendering speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 for Figure 1 Partial structure diagram Figure 1 ;

[0013] Figure 3 It is a schematic diagram of the side structure of a conveying roller;

[0014] Figure 4 It is a schematic diagram of the side structure of the second conveying roller;

[0015] Figure 5 It is a schematic diagram of the side structure of the upper insulation cover and the lower insulation cover;

[0016] Figure 6 It is a schematic diagram of the side structure of the cleaning ring pipe;

[0017] Figure 7 for Figure 1 Partial structure diagram Figure 2 ;

[0018] In the figure: 1. extruder; 2. conveying roller 1; 3. discharge pipe; 4. infusion hose; 5. insulation lower half; 6. conveying roller 2; 7. insulation upper half; 8. cleaning ring pipe; 9. mounting frame; 10. guide roller; 11. calender body; 12. guide roller; 13. adjustment stud; 14. electric heater; 15. water tank; 16. infusion pump; 17. infusion tube; 18. inlet and outlet; 19. spray hole; 20. infusion cavity; 21. conveying roller; 22. conveying motor; 23. adjustment screw; 24. adjustment slider; 25. adjustment nut; 26. air spray hole. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with embodiments.

[0020] Embodiment 1, as Figures 1 to 7 As shown, the utility model is a calendering device for preventing polytetrafluoroethylene strips from twisting, comprising a calender body 11, a water tank 15 is arranged between the calender body 11 and the extruder 1, a support plate is fixed on the top of the water tank 15, an electric heater 14 is arranged in the water tank 15, a bracket 1 is fixed to the left end of the support plate, a conveying roller 2 is rotatably mounted on the bracket 1, a bracket 2 is arranged in the middle of the support plate, a conveying roller 2 6 is rotatably mounted on the bracket 2, a conveying motor 22 is fixed to the rear end of the conveying roller 2 6, the conveying motor 22 is a servo motor, a conveying roller 21 rotatably mounted on the bracket 2 is arranged above the conveying roller 2 6, the left and right sides of the conveying roller 2 6 are provided with a heat-insulating upper half cover 7 and a heat-insulating lower half cover 5 that cooperate with each other, and the left and right ends of the heat-insulating upper half cover 7 and the heat-insulating lower half cover 5 are provided with semicircular arcs Inlet and outlet 18, connecting flanges are provided on the front and rear outer walls of the upper insulation sleeve 7 and the lower insulation sleeve 5, and mounting holes are provided on the connecting flanges. Adjusting studs 13 are provided in the mounting holes, and adjusting nuts 25 are installed on the upper and lower adjusting studs 13 of the connecting flanges. In the inner walls of the upper insulation sleeve 7 and the lower insulation sleeve 5, infusion cavities 20 are provided. The inner side walls of the upper insulation sleeve 7 and the lower insulation sleeve 5 are evenly provided with a plurality of spray holes 19 that are connected to the infusion cavity 20 and spray toward the center. The upper insulation sleeve 7 and the lower insulation sleeve 5 are both connected to an infusion hose 4, and the lower end of the infusion hose 4 is connected to an infusion tube 17, and the other end of the infusion tube 17 is connected to the lower part of the water tank 15. An infusion pump 16 is provided on the infusion tube 17, and a drainage pipe 3 is fixed to the bottom of the lower insulation sleeve 5, and the bottom of the drainage pipe 3 passes through the support plate and extends into the water tank 15. The support plate is provided with a perforation, and the drain pipe 3 is slidably connected to the perforation.

[0021] During operation, the polytetrafluoroethylene strips extruded by the extruder 1 will first naturally droop into the liquid in the water tank 15 for insulation treatment, and then the polytetrafluoroethylene strips will bypass the conveying roller 2 and enter the insulation upper half sleeve 7 and the insulation lower half sleeve 5 on the left, and then pass through between the conveying roller 2 6 and the conveying pressure roller 21, and then penetrate into the insulation upper half sleeve 7 and the insulation lower half sleeve 5 on the right. The polytetrafluoroethylene strips after passing through enter the calender body 11 for calendering. When the polytetrafluoroethylene strip is first inserted into the thermal insulation upper half sleeve 7 and the thermal insulation lower half sleeve 5, the upper adjusting nut 25 can be screwed upward first, and then the thermal insulation upper half sleeve 7 is moved upward to leave space between the thermal insulation upper half sleeve 7 and the thermal insulation lower half sleeve 5 to facilitate the insertion of the polytetrafluoroethylene strip. After the polytetrafluoroethylene strip is passed through, the thermal insulation upper half sleeve 7 and the thermal insulation lower half sleeve 5 are put together, and then the upper adjusting nut 25 is tightened downward. When the polytetrafluoroethylene strip is transported in the thermal insulation upper half sleeve 7 and the thermal insulation lower half sleeve 5, it will be insulated by the liquid sprayed from the spray hole 19.

[0022] Embodiment 2, on the basis of embodiment 1, a conveying groove is provided on the outer periphery of the conveying roller 2 6 and the conveying roller 1 2 , and a conveying pressure groove is provided on the middle outer side wall of the conveying pressure roller 21 .

[0023] A mounting plate is fixed on the left side of the calender body 11, a mounting frame 9 is fixed on the mounting plate, and a guide roller 12 and a guide pressure roller 10 are rotatably mounted on the mounting frame 9. A temperature sensor is arranged in the water tank 15, and the temperature sensor is connected to a PLC controller, and the PLC controller is connected to an electric heater 14.

[0024] Adjustment sliders 24 are rotatably mounted on both ends of the guide roller 10, and an adjustment slot matching the adjustment slider 24 is provided on the mounting frame 9. An adjustment screw rod 23 is rotatably mounted on the top of the adjustment slider 24, and an adjustment screw sleeve is provided on the adjustment screw rod 23, which is fixed on the mounting frame 9, and a rotating handle is fixed on the top of the adjustment screw rod 23. Before working, the rotating handle can be turned as needed to drive the adjustment screw rod 23 to rotate, thereby driving the adjustment slider 24 to slide up and down to adjust the height position of the guide roller 10.

[0025] A cleaning ring tube 8 is provided on the left side of the guide roller 12. A plurality of air jet holes 26 for spraying hot air toward the extruded strip are obliquely provided on the left outer wall of the cleaning ring tube 8. The cleaning ring tube 8 is fixedly connected to a hot air inlet pipe. A support rod is fixed to the bottom of the cleaning ring tube 8. The support rod is fixed to the mounting plate. The polytetrafluoroethylene strip passing through the cleaning ring tube 8 will be cleaned and swept by the hot air sprayed from the air jet holes 26.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0027] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. A calendering device for preventing polytetrafluoroethylene strips from twisting, comprising a calender body (11), a water tank (15) provided between the calender body (11) and an extruder (1), a support plate fixed to the top of the water tank (15), and an electric heater (14) provided in the water tank (15), characterized in that: A bracket 1 is fixed to the left end of the support plate, on which a conveying roller 1 (2) is rotatably mounted, a bracket 2 is provided in the middle of the support plate, on which a conveying roller 2 (6) is rotatably mounted, a conveying motor (22) is fixed to the rear end of the conveying roller 2 (6), and a conveying pressure roller (21) rotatably mounted on the bracket 2 is provided above the conveying roller 2 (6), and the left and right sides of the conveying roller 2 (6) are provided with a heat-insulating upper half sleeve (7) and a heat-insulating lower half sleeve (5) that cooperate with each other, and the left and right ends of the heat-insulating upper half sleeve (7) and the heat-insulating lower half sleeve (5) are provided with semicircular arc-shaped inlets and outlets (18), and the front and rear side outer walls of the heat-insulating upper half sleeve (7) and the heat-insulating lower half sleeve (5) are provided with connecting flanges, and the connecting flanges are provided with mounting holes, and the mounting holes are provided with adjusting studs (13 ), an adjusting nut (25) is installed on the adjusting stud (13) connecting the upper and lower flanges, an infusion cavity (20) is provided in the inner wall of the thermal insulation upper half sleeve (7) and the thermal insulation lower half sleeve (5), and a plurality of spray holes (19) are evenly provided on the inner side walls of the thermal insulation upper half sleeve (7) and the thermal insulation lower half sleeve (5) that are connected to the infusion cavity (20) and spray liquid toward the center, and the thermal insulation upper half sleeve (7) and the thermal insulation lower half sleeve (5) are connected to an infusion hose (4), and the lower end of the infusion hose (4) is connected to an infusion tube (17), and the other end of the infusion tube (17) is connected to the lower part of the water tank (15), and an infusion pump (16) is provided on the infusion tube (17), and a drainage tube (3) is fixed to the bottom of the thermal insulation lower half sleeve (5), and the bottom of the drainage tube (3) passes through the support plate and extends into the water tank (15).

2. A calendering device for preventing polytetrafluoroethylene strips from twisting according to claim 1, characterized in that: Conveying grooves are provided on the outer circumferences of the second conveying roller (6) and the first conveying roller (2), and a conveying pressure groove is provided on the middle outer side wall of the conveying pressure roller (21).

3. A calendering device for preventing polytetrafluoroethylene strips from twisting according to claim 1, characterized in that: A mounting plate is fixed on the left side of the calender body (11), a mounting frame (9) is fixed on the mounting plate, and a guide roller (12) and a guide pressure roller (10) are rotatably mounted on the mounting frame (9).

4. A calendering device for preventing polytetrafluoroethylene strips from twisting according to claim 3, characterized in that: Adjustment sliders (24) are rotatably mounted on both ends of the guide pressure roller (10), an adjustment slide groove cooperating with the adjustment slider (24) is provided on the mounting frame (9), an adjustment screw rod (23) is rotatably mounted on the top of the adjustment slider (24), an adjustment screw sleeve is provided on the adjustment screw rod (23), the adjustment screw sleeve is fixed on the mounting frame (9), and a rotating handle is fixed on the top of the adjustment screw rod (23).

5. A calendering device for preventing polytetrafluoroethylene strips from twisting according to claim 3, characterized in that: A cleaning ring tube (8) is provided on the left side of the guide roller (12); a plurality of air jet holes (26) for jetting hot air toward the extruded strip are obliquely provided on the left outer wall of the cleaning ring tube (8); a hot air inlet pipe is fixedly connected to the cleaning ring tube (8); a support rod is fixed to the bottom of the cleaning ring tube (8); and the support rod is fixed to the mounting plate.

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