Cast film production device with winding speed control function

Abstract

The cast film production device with the winding speed control function comprises a machine table, a containing groove formed in the machine table is provided with a guide rail piece and movably provided with a tensioning assembly, a bearing seat of the tensioning assembly moves on the guide rail piece, a push rod component is installed at one end of the bearing seat, and the push rod component is connected with the guide rail piece. The piston end of the push rod component penetrates through the bearing base and is provided with a bearing frame with a tension roller, when a cast film is located between the tension roller and the traction roller, the position of the tension roller is controlled through the push rod component, and the cast film is extruded so that the moving path of the cast film can be changed, and preliminary tension adjustment can be achieved. A rotary driving part in the rotary traction assembly is provided with a rotary disc part and a supporting plate connected with a traction roller, when the cast film abuts against the traction roller, the rotation angle of the traction roller is changed through the rotary driving part, the path of the cast film can be further adjusted, and therefore the tension is adjusted again, and the tensile strength of the cast film is improved. Therefore, the rolling speed of the casting film is changed.

Description

Technical Field

[0001] This application relates to the field of cast film technology, and in particular to a cast film production apparatus with a winding speed control function. Background Technology

[0002] A casting machine is a device used to produce cast film. During the production process, cast films of different thicknesses and materials have different physical properties. Therefore, if the winding speed is not appropriate, wrinkles will form in the cast film during winding, affecting the flatness and appearance quality of the cast film. However, existing methods rely solely on adjusting the winding speed by motor speed, which can lead to uneven tension, easily causing tensile deformation, and even casting film breakage. Furthermore, cast films of different materials and thicknesses have different tension requirements. Adjusting the winding speed solely by motor speed cannot adaptively adjust the tension according to the actual characteristics of the cast film, thus affecting the quality of the finished cast film. Utility Model Content

[0003] The purpose of this invention is to provide a cast film production device with winding speed control function in order to solve the above-mentioned problems.

[0004] The technical solution of this application is implemented as follows:

[0005] This application provides a cast film production apparatus with winding speed control function, including a machine base, a roller assembly on the machine base, the roller assembly including annealing rollers, cooling rollers, traction rollers, stretching rollers and winding rollers spaced apart, a receiving groove on the machine base, a guide rail assembly in the receiving groove, a tensioning assembly movably mounted on the guide rail assembly, the tensioning assembly including a bearing seat, the bearing seat moving on the guide rail assembly, one end of the bearing seat extending above the traction roller and mounted with a push rod assembly, the piston end of the push rod assembly passing through the bearing seat and mounted with a bearing frame, the bearing frame rotatably mounted with a tension roller;

[0006] By moving the support seat on the guide rail, the tension roller and the traction roller are arranged in parallel or staggered positions, and with the cooperation of the push rod component, the tension roller moves closer to or further away from the traction roller.

[0007] The machine is equipped with a rotary traction assembly, which includes a rotary drive component. The rotary drive component has a turntable and is located below the stretching roller. A support plate is provided on the turntable, and a traction roller is provided on the support plate. With the cooperation of the rotary drive component, the traction roller can rotate in a circular motion.

[0008] The machine is also equipped with a dust collection seat, which is located between the traction roller and the stretching roller. The dust collection seat has an opening and two sets of spaced-apart mounting interfaces. The mounting interfaces are connected to the inside of the dust collection seat and to an external air pump.

[0009] In one embodiment, a spraying assembly is also provided on the machine base. The spraying assembly includes a liquid storage tank, which is connected to the machine base and located above the annealing roller.

[0010] The liquid storage tank is equipped with a liquid inlet, and a nozzle is provided on the side of the liquid storage tank facing the annealing roller. Several nozzles are provided and are distributed at intervals along the length of the liquid storage tank.

[0011] A support rod component is also provided on one side of the liquid storage tank. A scraper part is installed at the bottom of the support rod component, with the tip of the scraper part facing the annealing roller.

[0012] In one embodiment, the support rod component includes a fixed rod and a movable rod. The fixed rod is fixed to one side of the liquid storage tank and has a groove. A portion of the movable rod is movably disposed within the groove, and a scraper portion is disposed at the bottom of the movable rod.

[0013] The scraper section moves closer to or further away from the annealing roller by moving the movable rod within the chute.

[0014] In one embodiment, the opening is provided so that the vacuum cleaner seat has an upper vacuum part and a lower vacuum part, and both the upper vacuum part and the lower vacuum part are provided with a sieve plate.

[0015] The sieve plate allows the interior and exterior of the upper and lower dust collection sections to be connected.

[0016] In one embodiment, the guide rail is provided with mounting holes, and the mounting holes are provided in a plurality of them and are spaced apart along the length direction of the guide rail.

[0017] The support has a through hole, the diameter of which is the same as the diameter of the mounting hole;

[0018] When the through hole is aligned with one of the sets of mounting holes, a pin is installed between the through hole and the mounting hole.

[0019] In one embodiment, an adhesive layer is provided on the outer periphery of the tension roller. When the tension roller abuts against the cast film in cooperation with the push rod component, the adhesive layer abuts against the end face of the cast film.

[0020] In one embodiment, the spraying assembly further includes a liquid collection tank, which is disposed on the machine base and located below the annealing roller and the cooling roller.

[0021] The liquid collection tank has an open section on the side facing the annealing roller, which allows the inside of the liquid collection tank to communicate with the outside.

[0022] In one embodiment, the stretching rollers are provided in two sets spaced apart, with the two sets of stretching rollers on the same horizontal line.

[0023] The turntable is located between two sets of stretching rollers;

[0024] The two sets of stretching rollers and traction rollers are arranged in a triangular structure.

[0025] The advantages or beneficial effects of the above technical solutions include at least the following:

[0026] This application discloses a cast film production apparatus with winding speed control function. By moving the support seat in the tensioning assembly along the guide rail, the tension roller and traction roller are staggered. When the cast film is located between the tension roller and traction roller, the push rod component drives the tension roller to squeeze the cast film, thereby changing the movement path of the cast film and initially adjusting its tension. Furthermore, when the cast film moves between the traction roller and stretching roller, it passes through an opening in the dust collection seat, allowing the dust collection seat to remove dust and impurities from both ends of the cast film. The film is first adsorbed to improve its cleanliness. Then, the film moves to the position of the traction roller. Since the traction roller is mounted on the turntable via a support rod, the turntable is rotated by the rotation drive component. This allows the traction roller to adjust the path of the film again. Through the cooperation of the tensioning component and the rotation traction component, the tension of the film can be adjusted multiple times, thereby changing the winding speed. This makes it suitable for film of different sizes and thicknesses, solving the problem that existing equipment can only adjust the speed by electric rotation and cannot be used for different products. Attached Figure Description

[0027] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the description thereof, serve to explain the principles of the present application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.

[0028] Figure 1 A schematic diagram of the cast film production apparatus according to an embodiment of this application is shown from one perspective;

[0029] Figure 2 A structural schematic diagram of the cast film production apparatus according to an embodiment of this application is presented from another perspective;

[0030] Figure 3 A schematic diagram of a partially cross-section of an embodiment of this application is shown;

[0031] Figure 4 A schematic diagram of another partially cross-section of an embodiment of this application is shown;

[0032] Figure 5 A schematic diagram of the spray assembly and annealing roller according to an embodiment of this application is provided;

[0033] Figure 6 Examples of this application are presented. Figure 1 Enlarged view of point A in the middle;

[0034] Figure 7 Examples of this application are presented. Figure 2 Enlarged view of point B in the middle;

[0035] Reference numerals: 1. Machine base; 11. Receiving groove; 12. Guide rail; 121. Mounting hole;

[0036] 2. Roller components; 21. Annealing roller; 22. Cooling roller; 23. Traction roller; 24. Stretching roller; 25. Take-up roller;

[0037] 3. Tensioning assembly; 31. Bearing seat; 311. Through hole; 32. Push rod assembly; 33. Bearing frame; 331. Tension roller; 3311. Adhesive layer;

[0038] 4. Rotary traction assembly; 41. Rotary drive component; 411. Turntable section; 412. Support plate; 42. Traction roller;

[0039] 5. Dust collection base; 51. Opening; 52. Mounting interface; 53. Sieve plate;

[0040] 6. Spray assembly; 61. Liquid storage tank; 611. Liquid inlet port; 612. Spray nozzle assembly; 62. Liquid collection tank;

[0041] 7. Support rod assembly; 71. Scraper section; 72. Fixed rod; 73. Movable rod;

[0042] 8. Control Panel. Detailed Implementation

[0043] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0044] It should be noted that, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this application are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0046] It should be noted that the terms "a" and "several" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0047] The names of the messages or information exchanged between multiple devices in the embodiments of this application are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0048] Reference Figures 1-5 A casting film production apparatus with winding speed control function includes a machine base 1. A roller assembly 2 is mounted on the machine base 1. The roller assembly 2 includes annealing rollers 21, cooling rollers 22, traction rollers 23, stretching rollers 24, and winding rollers 25 spaced apart. Different rollers serve different functions. A receiving groove 11 is provided on the machine base 1. A guide rail 12 is disposed within the receiving groove 11. A tensioning assembly 3 is movably mounted on the guide rail 12. The tensioning assembly 3 includes a support seat 31, which moves along the guide rail 12. 2. One end of the support seat 31 extends above the traction roller 23 and is equipped with a push rod component 32. The push rod component 32 is a pneumatic push rod or a hydraulic push rod in the prior art. The piston end of the push rod component 32 passes through the support seat 31 and is equipped with a support frame 33. The support frame 33 is rotatably equipped with a tension roller 331. The position of the tension roller 331 can be adjusted by moving the support seat 31 on the guide rail component 12. The guide rail component 12 can play a guiding role to prevent the support seat 31 from shifting during the movement.

[0049] By moving the support seat 31 on the guide rail 12, the tension roller 331 and the traction roller 23 are arranged in parallel or staggered positions. With the cooperation of the push rod component 32, the tension roller 331 moves closer to or away from the traction roller 23. When the tension roller 331 and the traction roller 23 are arranged in parallel, the path of the cast film between them is relatively regular and straight. The tension on the cast film mainly depends on the speed difference between the two and the elasticity of the cast film itself. When the tension roller 331 and the traction roller 23 are staggered, the path of the cast film will bend. When the tension roller 331 moves closer to the traction roller 23 under the action of the push rod component 32, the path length of the cast film between them will change.

[0050] The machine 1 is equipped with a rotary traction assembly 4, which includes a rotary drive component 41. The rotary drive component 41 is an indexing plate driven by a motor in the prior art. The rotary drive component 41 has a turntable part 411 and is located below the stretching roller 24. A support plate 412 is provided on the turntable part 411, and a traction roller 42 is provided on the support plate 412. With the cooperation of the rotary drive component 41, the traction roller 23 can rotate in a circle. When the traction roller 23 rotates in a circle through the rotary drive component 41, the path of the cast film between the rollers will change. The change of the path will also affect the stretching degree of the cast film. When the traction roller 23 rotates in a circle and the path of the cast film becomes longer, the cast film will be further stretched. Conversely, when the path is shortened, the tension decreases. This method of adjusting the tension by changing the length of the cast film path can be flexibly operated according to the tension requirements of the cast film in actual production.

[0051] The machine base 1 is also equipped with a dust collection seat 5, which is located between the traction roller 23 and the stretching roller 24. The dust collection seat 5 has an opening 51 and two sets of spaced mounting interfaces 52. The mounting interfaces 52 are connected to the inside of the dust collection seat 5 and connected to an external air pump. The dust collection seat 5 can perform dust removal operation on the end face of the cast film.

[0052] Based on the above structure, the cast film extruded through the die first adheres to the annealing roller 21 and is wound onto the take-up roller 25 via transmission between the rollers. During the flow, the cast film is positioned between the tension roller 331 and the traction roller 23. The tension roller 331 is adjusted laterally by moving along the guide rail 12 via the support seat 31, and its vertical position is adjusted with the assistance of the push rod component 32. When the tension roller 331 comes into contact with the cast film, it changes the position of the cast film. With the extension and retraction of the push rod component 32, the tension of the cast film during its movement is adjusted, achieving initial adjustment of the winding speed. Subsequently, the cast film flows onto the stretching roller 24 and the traction roller 42. Since one end of the cast film abuts against the traction roller 42, and the traction roller 42 is supported by the support plate 41... 2. Installed on the turntable 411, the turntable 411 is rotated by the rotation drive component 41, thereby causing the traction roller 42 to rotate synchronously. During the rotation, the movement path of the cast film is adjusted, thereby further adjusting the tension and achieving a further change in the winding speed. In addition, the cast film will also pass through the opening 51 in the dust collection seat 5 during the movement. When the external air pump generates suction, it achieves suction through the dust collection seat 5, thereby adsorbing dust and impurities on the surface of the cast film. Through the cooperation of the tension component 3 and the rotation traction component 4, the tension of the cast film during the flow can be adjusted, thereby changing the winding speed of the cast film. It is suitable for cast films of different types and thicknesses, solving the problem of the single and limited adjustment method of the tension and winding speed of the existing cast film.

[0053] In one embodiment, reference is made to Figure 1 , Figure 3 and Figure 5 The machine 1 is also equipped with a spray assembly 6, which can cool the cast film and clean the annealing roller 21. The spray assembly 6 includes a liquid storage tank 61, which is connected to the machine 1 and located above the annealing roller 21. The liquid storage tank 61 is equipped with a liquid inlet 611, which is connected to an external water source through a pipeline. A spray nozzle 612 is provided on the side of the liquid storage tank 61 facing the annealing roller 21. Several spray nozzles 612 are provided and spaced apart along the length of the liquid storage tank 61. The spray nozzles 612 can spray the liquid in the liquid storage tank 61 onto the surface of the annealing roller 21 or onto the surface of the cast film to achieve the effect of dust removal and cooling. The spray nozzle 612 is a water mist nozzle in the prior art.

[0054] A support rod component 7 is also provided on one side of the liquid storage tank 61. A scraper part 71 is installed at the bottom of the support rod component 7. The tip of the scraper part 71 faces the annealing roller 21. The scraper part 71 is used to scrape off impurities when cleaning the surface of the annealing roller 21.

[0055] The support rod component 7 includes a fixed rod 72 and a movable rod 73. The fixed rod 72 is fixed to one side of the liquid storage tank 61 and has a groove. Part of the movable rod 73 is movable within the groove. The scraper part 71 is located at the bottom of the movable rod 73. The scraper part 71 can not only scrape off impurities attached to the surface of the annealing roller 21, but also scrape off impurities generated on the surface of the cast film. By moving the movable rod 73 within the groove, the scraper part 71 can be moved closer to or further away from the annealing roller 21. By changing the position of the scraper part 71, it can be adjusted according to the actual scraping situation and can be applied to cast films of different thicknesses, thereby improving the flexibility of the scraper part 71.

[0056] In one embodiment, reference is made to Figure 1 , Figure 2 and Figure 6 The opening 51 allows the vacuum cleaner seat 5 to have an upper vacuum section and a lower vacuum section. Both the upper and lower vacuum sections are equipped with a sieve plate 53. The sieve plate 53 allows the interior and exterior of the upper and lower vacuum sections to communicate. When the cast film is located in the vacuum cleaner seat 5, it is inside the opening 51, and the casting film is vacuumed through both ends. The sieve plate 53 is used to prevent large particles of impurities in the environment from entering the vacuum cleaner seat 5 under the action of suction, thereby preventing blockage inside the vacuum cleaner seat 5.

[0057] In one embodiment, reference is made to Figure 1 , Figure 2 and Figure 7 The guide rail 12 is provided with mounting holes 121. Several mounting holes 121 are provided and distributed at intervals along the length of the guide rail 12. The arrangement of several mounting holes 121 enables the support seat 31 to have mounting holes 121 aligned with the through hole 311 when it moves to different positions, thereby improving the flexibility of the support seat 31's movement and enabling fine-tuning operations.

[0058] The support 31 has a through hole 311, the diameter of which is the same as the diameter of the mounting hole 121. When the through hole 311 is aligned with one of the mounting holes 121, a pin is installed between the through hole 311 and the mounting hole 121. When the pin passes through the through hole 311 and the mounting hole 121, it can fix the support 31 to the guide rail 12, thereby preventing the support 31 from shifting its position when subjected to external impact, and thus playing a limiting role.

[0059] In one embodiment, reference is made to Figure 1 , Figure 2 and Figure 7An adhesive layer 3311 is provided on the outer periphery of the tension roller 331. When the tension roller 331 abuts against the cast film in cooperation with the push rod component 32, the adhesive layer 3311 abuts against the end face of the cast film. Since the cast film may be affected by equipment or environment during the flow process, dust may be attached to the surface of the cast film. The adhesive layer 3311 can adhere and adsorb the dust when the end face of the cast film contacts the tension roller 331, thereby further improving the smoothness of the cast film surface.

[0060] In one embodiment, reference is made to Figure 1 , Figure 3 and Figure 5 The spray assembly 6 also includes a liquid collection tank 62, which is used to collect the liquid sprayed from the storage tank 61 by the nozzle 612. The liquid collection tank 62 is set on the machine base 1 and located below the annealing roller 21 and the cooling roller 22. The side of the liquid collection tank 62 facing the annealing roller 21 is provided with an open part, which allows the inside of the liquid collection tank 62 to communicate with the outside. When the liquid flows out from the annealing roller 21 or the cooling roller 22 under the action of gravity, it will flow into the liquid collection tank 62 through the open part. On the one hand, it can play the role of collecting liquid, and on the other hand, it can prevent liquid from dripping onto the surface of the machine base 1, thereby affecting the equipment on the machine base 1.

[0061] In one embodiment, reference is made to Figure 1 , Figure 2 and Figure 4 The stretching rollers 24 are arranged in two sets at intervals, with the two sets of stretching rollers 24 on the same horizontal line. The turntable 411 is located between the two sets of stretching rollers 24. The two sets of stretching rollers 24 and the traction roller 42 form a triangular structure. The triangular structure allows for a gradual change in tension during the transition. When the cast film passes between the two sets of stretching rollers 24 and moves towards the traction roller 42, the tension of the cast film can be more evenly distributed within this triangular area due to the triangular structure of the two sets of stretching rollers 24 and the traction roller 42. This triangular structure makes the cast film more balanced in different directions, avoiding tension concentration in a local area, thereby reducing the possibility of local overstretching or relaxation of the cast film. Furthermore, since the traction roller 42 can rotate in cooperation with the rotary drive component 41, the angle between the cast film and the stretch roller 24 can be changed by changing the angle of the traction roller 42. The change in angle will directly affect the friction and tension of the cast film, thus making it suitable for cast films of different materials and thicknesses to achieve the best production conditions.

[0062] In one embodiment, reference is made to Figure 1 and Figure 2The machine tool 1 is also equipped with a control panel 8, which is electrically connected to the roller component 2, the push rod component 32 and the rotary drive component 41. Through the settings of the control panel 8, the operator can control the rotation speed of different rollers in the roller component 2, adjust the moving distance of the tension roller 331 driven by the push rod component 32, and realize the rotation angle of the rotary drive component 41 to achieve precise control.

[0063] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0064] Those skilled in the art should understand that the above embodiments are merely for illustrative purposes and are not intended to limit the scope of this application. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of this application.

Claims

1. A cast film production apparatus with winding speed control function, comprising a machine base, wherein a roller assembly is arranged on the machine base, the roller assembly comprising an annealing roller, a cooling roller, a traction roller, a stretching roller, and a winding roller spaced apart, characterized in that: The machine base is provided with a receiving groove, and a guide rail is provided in the receiving groove. A tensioning component is movably provided on the guide rail. The tensioning component includes a bearing seat, which moves on the guide rail. One end of the bearing seat extends above the traction roller and is equipped with a push rod component. The piston end of the push rod component passes through the bearing seat and is equipped with a bearing frame. A tension roller is rotatably provided on the bearing frame. By moving the bearing seat on the guide rail, the tension roller and the traction roller are arranged in parallel or staggered positions, and with the cooperation of the push rod component, the tension roller moves closer to or further away from the traction roller. The machine tool is equipped with a rotary traction assembly, which includes a rotary drive component. The rotary drive component has a turntable portion located below the stretching roller. A support plate is provided on the turntable portion, and a traction roller is provided on the support plate. Through the cooperation of the rotary drive component, the traction roller can rotate in a circular motion. The machine base is also equipped with a dust collection seat, which is located between the traction roller and the stretching roller. The dust collection seat has an opening and two sets of spaced-apart mounting interfaces. The mounting interfaces are connected to the interior of the dust collection seat and to an external air pump.

2. The cast film production apparatus with winding speed control function according to claim 1, characterized in that: The machine is also equipped with a spraying assembly, which includes a liquid storage tank. The liquid storage tank is connected to the machine and located above the annealing roller. The liquid storage tank is provided with a liquid inlet port, and a nozzle is provided on the side of the liquid storage tank facing the annealing roller. Several nozzles are provided and are distributed at intervals along the length of the liquid storage tank. A support rod component is also provided on one side of the liquid storage tank. A scraper part is installed at the bottom of the support rod component, and the tip of the scraper part faces the annealing roller.

3. The cast film production apparatus with winding speed control function according to claim 2, characterized in that: The support rod component includes a fixed rod and a movable rod. The fixed rod is fixed to one side of the liquid storage tank and has a groove. A portion of the movable rod is movably disposed within the groove, and the scraper part is disposed at the bottom of the movable rod. The scraper portion moves closer to or further away from the annealing roller by moving the movable rod within the chute.

4. The cast film production apparatus with winding speed control function according to claim 1, characterized in that: The opening allows the vacuum cleaner to have an upper vacuum section and a lower vacuum section, both of which are equipped with a sieve plate. The sieve plate allows the interior and exterior of the upper and lower dust collection sections to communicate with each other.

5. The cast film production apparatus with winding speed control function according to claim 1, characterized in that: The guide rail is provided with mounting holes, and there are several mounting holes that are spaced apart along the length of the guide rail. The support has a through hole, and the diameter of the through hole is the same as the diameter of the mounting hole; When the through hole is aligned with one of the sets of mounting holes, a pin is installed between the through hole and the mounting hole.

6. The cast film production apparatus with winding speed control function according to claim 1, characterized in that: An adhesive layer is provided on the outer periphery of the tension roller. When the tension roller abuts against the cast film with the cooperation of the push rod component, the adhesive layer abuts against the end face of the cast film.

7. The cast film production apparatus with winding speed control function according to claim 2, characterized in that: The spraying assembly also includes a liquid collection tank, which is disposed on the machine base and located below the annealing roller and the cooling roller; The liquid collection tank has an open section on the side facing the annealing roller, which allows the inside of the liquid collection tank to communicate with the outside.

8. The cast film production apparatus with winding speed control function according to claim 1, characterized in that: The stretching rollers are provided in two sets with intervals, and the two sets of stretching rollers are on the same horizontal line; The turntable is located between the two sets of stretching rollers; The two sets of stretching rollers and the traction rollers are arranged in a triangular structure.

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