Cooling device for plastic film production

Abstract

The utility model discloses a cooling device for plastic film production, which is provided with a cooling mechanism, after a film is guided to a position above a cooling pool through a guide roller, cold water is atomized by an atomizing nozzle and sprayed to the surface of the film for cooling, and an air supply assembly supplies air to the inside of an air storage box; an air outlet head in front of an air storage box enables an air knife to generate air to blow water mist on the surface of a thin film, after water drops left on the surface of the thin film are removed, the thin film enters the middle position of the shells on the two sides, and at the moment, after the shells on the two sides supply cold air to the interior through an external cold water supply system, the thin film is cooled. And meanwhile, the wind power of cold air can be adjusted according to requirements due to different films during use, the pull rod on one side can be pulled, the pull rod drives the pore plates on the two sides to slide in the shell, and the pore plates adjust the sizes of the air outlet holes.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling devices for plastic film production, specifically a cooling device for plastic film production. Background Technology

[0002] Films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins are used for packaging and as coating layers. Plastic packaging and plastic packaging products are taking up an increasingly large share of the market, especially composite plastic flexible packaging, which is widely used in food, pharmaceutical, and chemical industries. Among these, food packaging accounts for the largest proportion, such as beverage packaging, frozen food packaging, retortable food packaging, and fast food packaging. These products have brought great convenience to people's lives. In the plastic film production process, it is usually necessary to cool the extruded plastic film to facilitate subsequent winding. Existing plastic film cooling uses a combination of water cooling and air cooling. It is necessary to remove and dry the water remaining on the film surface in a timely manner to prevent water mist from remaining on the surface. Therefore, we propose a cooling device for plastic film production to solve the above-mentioned problems. Utility Model Content

[0003] The purpose of this invention is to provide a cooling device for plastic film production, so as to solve the problem of air drying the cooled film when using the cooling device for plastic film production mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cooling device for plastic film production, comprising a base plate;

[0005] The base plate is provided with a frame, the frame is provided with three sets of cooling rollers, the cooling rollers are circulated with cold water through a circulation component, the base plate is provided with a cooling pool, the cooling pool is provided with two sets of guide rollers, the cooling pool is provided with a cooling component, and the base plate is provided with a take-up roller.

[0006] The cooling assembly includes a water supply pipe, an atomizing nozzle, an air storage box, an air outlet, a housing, an air outlet, and an orifice plate. The top of the cooling pool is provided with two sets of water supply pipes, and multiple sets of atomizing nozzles are provided on the two sets of water supply pipes. The cooling pool is provided with two sets of air storage boxes, and an air outlet is provided in front of the air storage boxes. The cooling pool is provided with two sets of housings, and an air outlet is provided below the housings. The cooling pool is slidably connected to the orifice plate, and the orifice plate is slidably connected to the housing.

[0007] As a preferred technical solution of this utility model, the circulation component includes a water pump, a pumping pipe, a connecting pipe, a rotary joint, and a return pipe. The cooling pool is equipped with a water pump, which is connected to the pumping pipe. The pumping pipe is equipped with three sets of connecting pipes corresponding to the cooling pipe. The two ends of the cooling pipe are respectively connected to connecting pipes through rotary joints. The water supply pipe at the front end of the cooling roller is connected to the pumping pipe, and the connecting pipe at the rear end of the cooling pipe is connected to the return pipe.

[0008] As a preferred embodiment of this utility model, the gas storage box is inclined and the front end of the air outlet of the gas storage box is narrowed, and the gas storage box is supplied with gas through the gas supply component.

[0009] As a preferred technical solution of this utility model, the air supply component includes an air extraction box, a fan, a filter screen, and an air supply pipe. The air extraction box is provided on the cooling pool, and the fan is provided inside the air extraction box. The filter screen is slidably connected inside the air extraction box, and the upper end of the air extraction box is connected to the air storage box through the air supply pipe.

[0010] As a preferred embodiment of this utility model, the housing is supplied with air by an external cold air supply system, and the two sets of housings are connected by a tie rod.

[0011] As a preferred embodiment of this utility model, the holes in the perforated plate are the same size as the air outlets inside the shell.

[0012] As a preferred embodiment of this utility model, the cooling rollers are installed at different heights, with the middle cooling roller of the three sets of cooling rollers being higher than the cooling rollers on both sides.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The cooling device for plastic film production is equipped with a cooling mechanism. After the film is guided to the top of the cooling pool by the guide roller, the atomizing nozzle sprays cold water into a mist onto the film surface for cooling. The air supply component supplies air to the inside of the air storage box. The air outlet in front of the air storage box generates air blades to blow the water mist on the film surface, removing the water droplets remaining on the film surface. The film then enters the middle position of the two shells. At this time, the two shells supply cold air to the inside through the external cold water supply system. The air reaches the film surface through multiple air outlets below to dry the film. At the same time, the wind force of the cold air can be adjusted according to the different films. The pull rod on one side can be pulled to make the pull rod drive the perforated plates on both sides to slide inside the shell, so that the perforated plates adjust the size of the air outlets. Attached Figure Description

[0014] Figure 1 The three-dimensional representation of this utility model Figure 1 Structural diagram;

[0015] Figure 2The three-dimensional representation of this utility model Figure 2 Structural diagram;

[0016] Figure 3 This is a schematic diagram of the main cross-section of the present invention;

[0017] Figure 4 This is a schematic diagram of the cooling component structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the shell structure of this utility model.

[0019] In the diagram: 1. Base plate; 2. Frame; 3. Cooling roller; 4. Circulation assembly; 401. Water pump; 402. Water extraction pipe; 403. Connecting pipe; 404. Rotary joint; 405. Return water pipe; 5. Cooling pool; 6. Guide roller; 7. Tie rod; 8. Take-up roller; 9. Cooling assembly; 901. Water supply pipe; 902. Atomizing nozzle; 903. Air storage box; 904. Air outlet; 905. Shell; 906. Air outlet; 907. Perforated plate; 10. Air supply assembly; 101. Air extraction box; 102. Fan; 103. Filter screen; 104. Air supply pipe. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5 This utility model provides a technical solution: a cooling device for plastic film production, including a base plate 1;

[0022] A frame 2 is provided on the base plate 1, and three sets of cooling rollers 3 are provided on the frame 2. The cooling rollers 3 are installed at different heights, with the middle cooling roller 3 being higher than the two side cooling rollers 3. The cooling rollers 3 are circulated with cold water through a circulation component 4. The circulation component 4 includes a water pump 401, a water pumping pipe 402, a connecting pipe 403, a rotary joint 404, and a return water pipe 405. A water pump 401 is provided in the cooling pool 5. The water pump 401 is connected to the water pumping pipe 402. Three sets of connecting pipes 403 corresponding to the cooling pipes are provided on the water pumping pipe 402. The two ends of the cooling pipes are connected to the connecting pipes 403 through the rotary joints 404. The water supply pipe 901 at the front end of the cooling roller 3 is connected to the water pumping pipe 402. The connecting pipe 403 at the rear end of the cooling pipe is connected to the return water pipe 405. A cooling pool 5 is provided on the base plate 1, and two sets of guide rollers 6 are provided in the cooling pool 5. A cooling component 9 is provided in the cooling pool 5. A winding roller 8 is provided on the base plate 1.

[0023] During use, the plastic film after production is completed is pre-cooled by three sets of cooling rollers 3 on the frame 2. When the cooling rollers 3 are used for the first time, external cold water enters the water pumping pipe 402 and then enters the corresponding cooling roller 3 through the corresponding connecting pipe 403. After the cold water flows, it enters the cooling pool 5 through the return water pipe 405. In subsequent use, the water generated during the cooling process can be pumped into the water pumping pipe 402 by the water pump 401, so that the cold water can be supplied and circulated on its own. It is not necessary to rely on external water supply all the time. The plastic film is pre-cooled by the cooling rollers 3 to prevent the temperature from dropping too much at once when it is cooled directly by water mist, which may cause deformation.

[0024] The cooling assembly 9 includes a water supply pipe 901, an atomizing nozzle 902, an air storage box 903, an air outlet 904, a housing 905, an air outlet 906, and an orifice plate 907. Two sets of water supply pipes 901 are located at the top of the cooling pool 5, and multiple sets of atomizing nozzles 902 are mounted on the two sets of water supply pipes 901. Two sets of air storage boxes 903 are located inside the cooling pool 5. The air storage boxes 903 are inclined, and the front end of the air outlet 904 at the front end of the air storage box 903 narrows. The air storage boxes 903 are supplied with air through an air supply assembly 10, which includes an air extraction box 101, a fan 102, a filter screen 103, and an air supply pipe 104. The air extraction box 101 is located on the cooling pool 5. A fan 102 is installed inside the air extraction box 101. The air extraction box 101 is slidably connected to the filter screen 103. The upper end of the air extraction box 101 is connected to the air storage box 903 through the air supply pipe 104. An air outlet 904 is provided in front of the air storage box 903. Two sets of housings 905 are provided inside the cooling pool 5. An air outlet 906 is provided below the housing 905. The cooling pool 5 is slidably connected to the perforated plate 907. The perforated plate 907 and the housing 905 are slidably connected. The housing 905 is supplied with air through an external cold air supply system. The two sets of housings 905 are connected by a tie rod 7. The holes in the perforated plate 907 and the air outlet 906 inside the housing 905 are the same size.

[0025] At this time, the plastic film is guided by the guide roller 6, and multiple atomizing nozzles 902 above the two sets of water supply pipes 901 atomize the cold water supplied by the external water supply system and spray it onto the film surface for cooling. At the same time, the fans 102 inside the air extraction boxes 101 on both sides draw in external air, filter it through the filter screen 103 to remove dust and impurities, and then enter the air storage box 903 through the air supply pipe 104. Subsequently, the air outlet 904 in front of the air storage box 903 generates an air knife to blow away the water mist on the film surface. Because the air storage box 903 is tilted, the air generated by the air outlet 904 can be directed to the surface. The blade makes better contact with the film surface, thereby removing residual water droplets. The film then enters the middle position between the two housings 905. At this time, the two housings 905 supply cold air to the inside through the external cold water supply system, and blows it onto the film surface through multiple air outlets 906 below to dry the film. At the same time, during use, the wind force of the cold air can be adjusted according to the different films. The pull rod 7 on one side can be pulled, so that the pull rod 7 drives the perforated plates 907 on both sides to slide inside the housing 905, thereby adjusting the size of the air outlets 906 through the perforated plates 907.

[0026] Working Principle: When using the cooling device for plastic film production, after production, the plastic film is pre-cooled by three sets of cooling rollers 3 on the frame 2. Initially, external cold water enters the pump pipe 402 and then flows through the corresponding connecting pipe 403 into the corresponding cooling roller 3. The cold water then flows through the return pipe 405 into the cooling pool 5. In subsequent use, the water pump 401 draws water generated during the cooling process into the pump pipe 402, allowing for self-circulation of cold water without continuous external supply. Pre-cooling the plastic film with the cooling rollers 3 prevents excessive temperature drop and deformation during subsequent direct cooling with water mist. The guide roller 6 guides the plastic film, and multiple atomizing nozzles 902 above the two sets of water supply pipes 901 atomize the cold water supplied by the external water supply system and spray it onto the film surface for cooling. Simultaneously, the fans 102 inside the air extraction boxes 101 on both sides draw in external air and then... The filter 103 filters dust and impurities, which then enter the air storage box 903 through the air supply pipe 104. Subsequently, the air outlet 904 at the front of the air storage box 903 generates an air knife to blow away the water mist on the membrane surface. Due to the inclined setting of the air storage box 903, the air knife generated by the air outlet 904 can better contact the membrane surface, thereby removing the water droplets remaining on the membrane surface. The membrane then enters the middle position of the two housings 905. At this time, the two housings 905 supply cold air to the inside through the external cold water supply system, and blows it onto the membrane surface through multiple air outlets 906 below to dry the membrane. At the same time, during use, the wind force of the cold air can be adjusted according to the different membranes. The pull rod 7 on one side can be pulled to make the pull rod 7 drive the perforated plates 907 on both sides to slide inside the housing 905, thereby adjusting the size of the air outlets 906 through the perforated plates 907, thus completing a series of operations. The contents not described in detail in this specification are prior art known to those skilled in the art.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cooling device for producing plastic film, comprising a base plate (1); Its features are: The base plate (1) is provided with a frame (2), the frame (2) is provided with three sets of cooling rollers (3), the cooling rollers (3) are circulated with cold water through the circulation component (4), the base plate (1) is provided with a cooling pool (5), the cooling pool (5) is provided with two sets of guide rollers (6), the cooling pool (5) is provided with a cooling component (9), and the base plate (1) is provided with a take-up roller (8). The cooling assembly (9) includes a water supply pipe (901), an atomizing nozzle (902), an air storage box (903), an air outlet (904), a housing (905), an air outlet (906), and an orifice plate (907). The top of the cooling pool (5) is provided with two sets of water supply pipes (901), and multiple sets of atomizing nozzles (902) are provided on the two sets of water supply pipes (901). The cooling pool (5) is provided with two sets of air storage boxes (903), and an air outlet (904) is provided in front of the air storage box (903). The cooling pool (5) is provided with two sets of housings (905), and an air outlet (906) is provided below the housing (905). The cooling pool (5) is slidably connected to the orifice plate (907), and the orifice plate (907) and the housing (905) are slidably connected.

2. The cooling device for plastic film production according to claim 1, characterized in that, The circulation component (4) includes a water pump (401), a water pumping pipe (402), a connecting pipe (403), a rotary joint (404), and a return water pipe (405). The cooling pool (5) is equipped with a water pump (401). The water pump (401) is connected to the water pumping pipe (402). The water pumping pipe (402) is equipped with three sets of connecting pipes (403) corresponding to the cooling pipe. The two ends of the cooling pipe are connected to the connecting pipes (403) respectively through the rotary joint (404). The water supply pipe (901) at the front end of the cooling roller (3) is connected to the water pumping pipe (402). The connecting pipe (403) at the rear end of the cooling pipe is connected to the return water pipe (405).

3. The cooling device for plastic film production according to claim 1, characterized in that, The gas storage box (903) is inclined and the front end of the air outlet (904) at the front end of the gas storage box (903) is narrowed. The gas storage box (903) is supplied with gas through the gas supply component (10).

4. A cooling device for plastic film production according to claim 3, characterized in that, The air supply assembly (10) includes an air extraction box (101), a fan (102), a filter screen (103), and an air supply pipe (104). The cooling pool (5) is provided with an air extraction box (101). The air extraction box (101) is provided with a fan (102). The air extraction box (101) and the filter screen (103) are slidably connected. The upper end of the air extraction box (101) is connected to the air storage box (903) through the air supply pipe (104).

5. A cooling device for plastic film production according to claim 1, characterized in that, The housing (905) is supplied with air by an external cold air supply system, and the two sets of housings (905) are connected by a pull rod (7).

6. A cooling device for plastic film production according to claim 1, characterized in that, The holes in the perforated plate (907) are the same size as the vents (906) inside the shell (905).

7. A cooling device for plastic film production according to claim 1, characterized in that, The cooling rollers (3) are installed at different heights, with the middle cooling roller (3) of the three sets of cooling rollers (3) being higher than the cooling rollers (3) on both sides.

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