Cooling device for plastic film

Abstract

The utility model discloses a cooling device for a plastic film, which comprises a cooling box, a plurality of first conveying roller groups are erected on one side in the cooling box, each first conveying roller group consists of an upper cold air roller and a lower cold air roller, an air outlet cavity is formed in each cold air roller, and a small blowing pump is arranged in each air outlet cavity. A plurality of air outlet holes for blowing air are formed in the roller wall of each cold air roller; a plurality of second conveying roller sets are erected on one side of the first conveying roller set, each second conveying roller set is composed of an upper cold water roller and a lower cold water roller, a cold water layer is arranged in each cold water roller, and one end of each cold water roller is connected with a cold water tank. Through the combination of the cold air roller and the cold water roller, efficient cooling can be achieved in the plastic film production process, the cold air roller injects cold air into the air cavity through the air blowing pump, the film is rapidly cooled through the air outlet holes in the roller wall, and the cold water roller enables cold water to flow through the cold water layer in the roller through the circulating water pump and the cold water tank. And the effective cooling of the film is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film production and processing, in particular to a cooling device for plastic film. Background Art

[0002] Plastic film is a thin and soft material made of polymer as the main raw material through extrusion, stretching or blow molding. They are widely used in various fields, including food packaging, agricultural covering, medical use, etc. When making existing plastic bags, the plastic particles are first heated and melted, extruded through an extruder, and then blown into plastic film by a blower, and then the plastic film is heat-sealed and cut by a bag making machine to finally make a plastic bag.

[0003] In the above production process, the temperature of the plastic film blown out by the blower is relatively high and cannot be directly processed into the bag making machine. When the traditional plastic film cooling device is cooling, due to the force between the polymer chains inside the plastic film and the surface tension of the plastic surface, the plastic film will curl on both sides after cooling. In addition, the plastic film just output is in a high temperature state. When it encounters a lower temperature, it will deform and tear, resulting in unsatisfactory cooling effect, poor film quality, low stretchability, low strength, etc. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the above-mentioned background technology that the traditional plastic film cooling device has unsatisfactory cooling effect during cooling, resulting in poor film quality, low stretchability, low strength and the like.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a cooling device for plastic film is provided, including a cooling box, a plurality of groups of first conveying roller groups are set up on one side of the cooling box, each group of the first conveying roller groups is respectively composed of two upper and lower cold air rollers, an air outlet cavity is provided in each of the cold air rollers, a small blowing pump is installed in the air outlet cavity, and a plurality of air outlet holes for blowing are provided on the roller wall of each of the cold air rollers; a plurality of groups of second conveying roller groups are set up on one side of the first conveying roller group, each group of the second conveying roller groups is respectively composed of two upper and lower cold water rollers, a cold water layer is provided in each of the cold water rollers, a cold water box is connected to one end of each of the cold water rollers, and a small water pump is installed at the connection between the cold water box and the cold water roller to circulate the cold water in the cold water layer; the first conveying roller group and the second conveying roller group are both rotated by connecting to a motor.

[0006] Furthermore, the cold water tank is mounted on one end of the cold water roller through a threaded connection.

[0007] Furthermore, the small water pump is connected to the cold water layer and the cold water tank respectively through water pipes, and the cold water layer is connected to the cold water tank through water pipes.

[0008] Furthermore, two groups of the first conveying roller groups are mounted on both side walls of the cooling box, and two groups of the second conveying roller groups are mounted on one side of the first conveying roller group.

[0009] Furthermore, mutually meshing transmission gears are fixedly mounted on the upper and lower cold air rollers, wherein one end of the upper cold air roller is fixedly connected to the output end of the first motor, and the first motor is fixedly mounted on the outer wall of the cooling box.

[0010] Furthermore, one end of each of the cold water rollers is fixedly connected to an output end of a second motor, and the second motor is fixedly mounted on an outer wall of the cooling box.

[0011] Furthermore, a plurality of heat dissipation fans are installed on two opposite side walls of the cooling box, and a plurality of heat dissipation holes are opened on the other two side walls of the cooling box.

[0012] Furthermore, a feed inlet is provided on a side wall of the cooling box close to the first conveying roller set, and a discharge inlet is provided on a side wall of the cooling box close to the second conveying roller set.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The cooling device can achieve efficient cooling in the production process of plastic film through the combination of cold air roller and cold water roller. The cold air roller injects cold air into the air cavity through the air pump, and quickly cools the film through the air outlet holes on the roller wall, while the cold water roller flows cold water through the cold water layer inside the roller through the circulating water pump and cold water tank, thereby achieving effective cooling of the film.

[0015] 2. The utility model adopts two cooling methods, air cooling and water cooling, and uses conveying rollers for conveying cooling, thereby forming traction tension on the plastic film. The method of first cooling with cold air and then cooling with cold water prevents the high-temperature plastic film just output from suddenly encountering low temperature and causing curling, deformation and tearing.

[0016] 3. The conveying roller group inside the cooling box is rotated by connecting the motor, while the cold air roller and the cold water roller are driven by the first motor and the second motor respectively, ensuring the stable operation of the conveying and cooling systems; the side wall of the cooling box is equipped with multiple heat dissipation holes and heat dissipation fans, which help to dissipate the heat generated in the box in time, maintain the normal working temperature of the device, and avoid overheating.

[0017] 4. Compared with traditional cooling methods, this device uses cold water circulation and cold air blowing to cool, which reduces energy consumption, reduces the impact on the environment, and meets the requirements of energy conservation and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the cold air roller in the utility model;

[0020] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0021] Figure 4 It is a schematic diagram of the cooling roller in the utility model;

[0022] Figure 5 for Figure 4 Schematic diagram of BB.

[0023] In the figure: 1-cooling box, 2-first conveying roller group, 3-cold air roller, 4-second conveying roller group, 5-cold water roller, 6-cold water box, 7-small water pump, 8-transmission gear, 9-first motor, 10-second motor, 11-cooling fan, 12-cooling hole, 13-feeding port, 14-discharging port;

[0024] 31-air outlet cavity, 32-small air pump, 33-air outlet hole, 51-cold water layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] Combination Figures 1 to 5A cooling device for plastic film shown in the figure comprises a cooling box 1, wherein a plurality of first conveying roller groups 2 are arranged on one side of the cooling box 1, each of the first conveying roller groups 2 is respectively composed of two upper and lower cold air rollers 3, each of the cold air rollers 3 is provided with an air outlet cavity 31, a small blowing pump 32 is installed in the air outlet cavity 31, and a plurality of air outlet holes 33 for blowing air are arranged on the roller wall of each cold air roller 3; a plurality of second conveying roller groups 4 are arranged on one side of the first conveying roller group 2, each of the second conveying roller groups 4 is respectively composed of two upper and lower cold water rollers 5, a cold water layer 51 is arranged in the inside of each cold water roller 5, a cold water tank 6 is connected to one end of each cold water roller 5, and a small water pump 7 is installed at the connection between the cold water tank 6 and the cold water roller 5 to cool the cold water layer 51. Circulation of internal cooling water; the first conveying roller group 2 and the second conveying roller group 4 are both rotated by connecting to the motor; the upper and lower cold air rollers 3 are fixedly provided with mutually meshing transmission gears 8, wherein one end of the cold air roller 3 arranged on the upper side is fixedly connected to the output end of the first motor 9, and the first motor 9 is fixedly provided on the outer wall of the cooling box 1; when in use, the combination of the cold air roller 3 and the cold water roller 5 can realize efficient cooling in the production process of the plastic film, the cold air roller 3 injects cold air into the air outlet cavity 31 through the small blowing pump 32, and quickly cools the film through the air outlet holes 33 on the roller wall, while the cold water roller 5 flows cold water through the cold water layer 51 in the roller through the circulating water pump and the cold water tank 6, so as to realize effective cooling of the film;

[0028] Among them, the cold water tank 6 is installed at one end of the cold water roller 5 through a threaded connection; the small water pump 7 is connected to the cold water layer 51 and the cold water tank 6 respectively through a water pipe, and the cold water layer 51 is connected to the cold water tank 6 through a water pipe; two groups of first conveying roller groups 2 are set on the two side walls of the cooling box 1, and two groups of second conveying roller groups 4 are set on one side of the first conveying roller group 2; one end of each cold water roller 5 is fixedly connected to the output end of the second motor 10, and the second motor 10 is fixedly installed on the outer wall of the cooling box 1; a number of cooling fans 11 are installed on the two opposite side walls of the cooling box 1, and a plurality of cooling holes 12 are opened on the other two side walls of the cooling box 1; a feed port 13 is opened on the side wall of the cooling box 1 close to the first conveying roller group 2, and a discharge port 14 is opened on the side wall of the cooling box 1 close to the second conveying roller group 4, and a traction roller can be set on one side of the discharge port 14 to pull the plastic film at the discharge port 14.

[0029] Working principle: When in use, the plastic film enters from the feed port 13, passes through the first conveying roller group 2 and the second conveying roller group 4 in sequence, and when it passes through the first conveying roller group 2, the small blowing pump 32 in the upper and lower cold air rollers 3 is started to blow up the air outlet cavity 31, and the gas is blown out from the air outlet hole 33, and the plastic film is blown to dissipate heat, and then when the plastic film passes through the second conveying roller group 4, the small water pump 7 therein is started to circulate the water in the cold water layer 51 and the water in the cold water tank 6, so that the plastic film passing through the upper and lower cold water rollers 5 is quickly cooled, and then the plastic film is pulled out from the discharge port 14; a pulling roller can be set on one side of the discharge port 14 to pull the plastic film; the utility model adopts the method of first cooling with cold air and then cooling with cold water to prevent the high-temperature plastic film just output from suddenly encountering low temperature and causing curling, deformation and tearing.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] 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.

Claims

1. A cooling device for plastic film, comprising a cooling box (1), characterized in that: A plurality of first conveying roller groups (2) are arranged on one side of the interior of the cooling box (1), each of the first conveying roller groups (2) being composed of two upper and lower cold air rollers (3), each of the cold air rollers (3) having an air outlet cavity (31) therein, a small air pump (32) being installed in the air outlet cavity (31), and a plurality of air outlet holes (33) for blowing air being arranged on the roller wall of each cold air roller (3); a plurality of second conveying roller groups (4) are arranged on one side of the first conveying roller group (2), each of the first conveying roller groups (4) being composed of two upper and lower cold air rollers (3), each of the cold air rollers (3) having an air outlet cavity (31) therein; The second conveying roller group (4) is composed of two upper and lower cold water rollers (5), each of which has a cold water layer (51) inside. One end of each cold water roller (5) is connected to a cold water tank (6), and a small water pump (7) is installed at the connection between the cold water tank (6) and the cold water roller (5) to circulate the cold water in the cold water layer (51). The first conveying roller group (2) and the second conveying roller group (4) are both rotated by connecting to a motor.

2. The cooling device for plastic film according to claim 1, characterized in that: The cold water tank (6) is installed on one end of the cold water roller (5) through a threaded connection.

3. The cooling device for plastic film according to claim 2, characterized in that: The small water pump (7) is connected to the cold water layer (51) and the cold water tank (6) respectively through water pipes, and the cold water layer (51) is also connected to the cold water tank (6) through water pipes.

4. The cooling device for plastic film according to claim 3, characterized in that: Two groups of the first conveying roller groups (2) are mounted on both side walls of the cooling box (1), and two groups of the second conveying roller groups (4) are mounted on one side of the first conveying roller group (2).

5. The cooling device for plastic film according to claim 4, characterized in that: The upper and lower cold air rollers (3) are both fixedly provided with mutually meshing transmission gears (8), wherein one end of the upper cold air roller (3) is fixedly connected to the output end of a first motor (9), and the first motor (9) is fixedly provided on the outer wall of the cooling box (1).

6. The cooling device for plastic film according to claim 5, characterized in that: One end of each of the cold water rollers (5) is fixedly connected to the output end of a second motor (10), and the second motor (10) is fixedly mounted on the outer wall of the cooling box (1).

7. The cooling device for plastic film according to claim 6, characterized in that: A plurality of heat dissipation fans (11) are installed on two opposite side walls of the cooling box (1), and a plurality of heat dissipation holes (12) are provided on the other two side walls of the cooling box (1).

8. The cooling device for plastic film according to claim 7, characterized in that: A feed inlet (13) is provided on the side wall of the cooling box (1) close to the first conveying roller group (2), and a discharge outlet (14) is provided on the side wall of the cooling box (1) close to the second conveying roller group (4).

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