A cooling device for plastic film production

Abstract

A kind of cooling device for plastic film production, it is related to the field of plastic film production, including telescopic rod support, variable diameter telescopic rod and refrigeration pipe. Among them, multiple variable diameter telescopic rods are arranged on the telescopic rod support in a radial manner, the refrigeration pipe is arranged on the output shaft of the variable diameter telescopic rod, the refrigeration pipe is made of elastic material, and the refrigeration pipe is provided with air outlets at equal intervals. The utility model discloses a bubble is blown through the annular structure surrounded by multiple refrigeration pipes, and the air outlet of the refrigeration pipe is arranged. The bubble is blown in the refrigeration pipe, and the bubble is blown in the refrigeration pipe. Since the refrigeration pipe is made of elastic material, the diameter of the annular space surrounded by multiple refrigeration pipes can be changed by the telescopic variable diameter telescopic rod, so that the diameter can be freely changed, and the bubble of different diameter film can be adapted to cooling. The cooling efficiency is more accurate and efficient.

Description

Technical Field

[0001] This utility model relates to the field of plastic film production technology, and in particular to a cooling device for plastic film production. Background Technology

[0002] Plastic film production typically begins by melting and plasticizing polymer raw materials in an extruder, forming a molten material that is extruded through a die into a tubular film. This is followed by a blow molding process, where compressed air is introduced into the tubular film through an air inlet device at the center of the die. This causes the film to expand under air pressure, forming bubbles. These bubbles are then pulled upwards by a traction device while gradually cooling and solidifying. Finally, after slitting and other processes, the film is produced into the desired specifications. During the blow molding process, parameters such as the diameter and wall thickness of the bubbles directly affect the film's performance and quality.

[0003] In existing technologies, during the plastic film blowing process, cooling is mainly achieved by a cooling device fitted around the outside of the blown bubble. However, the cooling module of this device has a fixed size. When producing plastic films of different diameters, the diameter of the bubble tube changes accordingly. The fixed-size cooling module cannot be precisely matched with the bubble tubes of different diameters, resulting in uneven cooling, low cooling efficiency, and affecting the film's shaping effect and production quality. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this utility model is to provide a cooling device for plastic film production, which is adapted to the cooling of plastic films of different diameters through bubble blowing, and the cooling efficiency is more accurate and efficient.

[0006] To achieve the above objectives, this utility model proposes a cooling device for plastic film production, comprising a telescopic rod support, a variable diameter telescopic rod, and a refrigeration pipe. Multiple variable diameter telescopic rods are arranged radially on the telescopic rod support. The refrigeration pipe is mounted on the output shaft of the variable diameter telescopic rod and is made of an elastic material. The multiple refrigeration pipes are connected end-to-end, and each refrigeration pipe has an air outlet at equal intervals.

[0007] Furthermore, a cooling pipe is provided on the telescopic rod bracket, and a branch pipe is provided between the cooling pipe and the refrigeration pipe, and an air supply pipe of elastic material is provided on the branch pipe.

[0008] Furthermore, the telescopic rod bracket has a ring structure, and a detachable telescopic rod connecting seat is provided at the bottom of the telescopic rod bracket. The telescopic rod bracket is connected to the telescopic rod through the telescopic rod connecting seat.

[0009] Furthermore, the bottom of the variable diameter telescopic rod is provided with a vertical lifting assembly, including a mounting bracket, a vertical push rod, and a push rod connecting seat. The push rod connecting seat is located at the end of the output shaft of the vertical push rod and at the bottom of the variable diameter telescopic rod. The mounting bracket is located on one side of the vertical push rod.

[0010] Furthermore, the variable diameter telescopic rod includes a hydraulic push rod or an electric telescopic rod, and a pull rod is provided on the output shaft of the variable diameter telescopic rod. A refrigeration pipe buckle is provided at the end of the pull rod, and the refrigeration pipe buckle is connected to the refrigeration pipe.

[0011] Furthermore, the surface of the cooling pipe is provided with a heat insulation layer, the air inlet end of the cooling pipe is provided with a cooling inlet nozzle, the bottom of the cooling pipe is connected to the cooling pipe by a cooling pipe connector, the cooling pipe has a helical spring structure, and the cooling pipe is made of a high thermal conductivity material.

[0012] Beneficial effects: This utility model uses a thin film bubble to penetrate between multiple cooling tubes to form an annular structure. Cold air is discharged from the outlet of the cooling tubes and blows air to cool the bubbles inside the cooling tubes. Since the cooling tubes are made of elastic material, the diameter of the annular space formed by the multiple cooling tubes can be changed by the expansion and contraction of the variable diameter telescopic rod. Therefore, the diameter can be freely changed to adapt to thin film bubbles of different diameters for adaptive cooling, resulting in more accurate and efficient cooling.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a top view of a cooling device for producing plastic film according to an embodiment of the present invention; Figure 2 This is a partial front cross-sectional view of a plastic film for production according to an embodiment of the present invention; Figure 3 for Figure 2 A magnified view of A in the middle.

[0015] As shown in the figure: 1. Variable diameter telescopic rod; 2. Cold air pipe; 21. Cold air inlet; 22. Branch pipe; 23. Cold air pipe connector; 3. Telescopic rod bracket; 31. Telescopic rod connector; 32. Pull rod; 41. Air supply pipe; 42. Refrigeration pipe clip; 43. Refrigeration pipe; 44. Air outlet; 5. Vertical lifting assembly; 51. Mounting support; 52. Vertical push rod; 53. Push rod connector; 6. Thin film blowing. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0017] The cooling device for producing plastic film according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0018] like Figures 1-3 As shown in the figure, the cooling device for plastic film production provided in this embodiment of the present invention includes a telescopic rod support 3, a variable diameter telescopic rod 1 and a refrigeration pipe 43. Multiple variable diameter telescopic rods 1 are provided and are arranged radially on the telescopic rod support 3. The refrigeration pipe 43 is provided on the output shaft of the variable diameter telescopic rod 1. The refrigeration pipe 43 is made of elastic material. Multiple refrigeration pipes 43 are connected end to end. Air outlets 44 are provided at equal intervals on the refrigeration pipe 43.

[0019] Specifically, in use, the cooling device of this application inserts a thin-film bubble 6 through the annular structure formed by multiple cooling tubes 43, and sends cold air into the cooling tubes 43. The cold air in the cooling tubes 43 is discharged from the air outlet 44, thus blowing air to cool the bubbles inside the cooling tubes 43. Because the cooling tubes 43 are made of elastic material, the diameter of the annular space formed by the multiple cooling tubes 43 can be changed by the synchronous expansion and contraction of the variable diameter telescopic rod 1. Therefore, the receiving diameter of the bubble can be freely changed, thereby adapting to thin-film bubbles 6 of different diameters for adaptive cooling, resulting in more accurate and efficient cooling.

[0020] In one embodiment of this utility model, such as Figures 1-3 As shown, a cold air pipe 2 is installed on the telescopic rod bracket 3, and a branch pipe 22 is installed between the cold air pipe 2 and the refrigeration pipe 43. An air supply pipe 41 made of elastic material is installed on the branch pipe 22.

[0021] The surface of the cold air pipe 2 is provided with an insulation layer. The air inlet end of the cold air pipe 2 is provided with a cold air inlet nozzle 21. The bottom of the cold air pipe 2 is connected to the cold air pipe 2 by a cold air pipe connector 23. The refrigeration pipe 43 is constructed as a spiral spring structure. The refrigeration pipe 43 includes a high thermal conductivity pipe, which is made of a high thermal conductivity material and has a better cooling effect, providing a more uniform cold source to the bubble surface.

[0022] Specifically, the air source is connected through the air inlet 21 to deliver cold air to the air pipe 2. The air pipe 2 transmits the cold air evenly and at the same pressure to the air supply pipe 41 through the branch pipe 22, and then transmits it to each refrigeration pipe 43 through the air supply pipe 41, so that the cold air is evenly discharged from the air outlet 44.

[0023] In one embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the telescopic rod bracket 3 has a ring structure. The bottom of the telescopic rod bracket 3 is provided with a detachable telescopic rod connecting seat 31. The telescopic rod bracket 3 is connected to the telescopic rod 11 at the output end of the variable diameter telescopic rod 1 through the telescopic rod connecting seat 31, which is used for stable support of multiple variable diameter telescopic rods 1.

[0024] In one embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the bottom of the variable diameter telescopic rod 1 is provided with a vertical lifting assembly 5, including a mounting support 51, a vertical push rod 52 and a push rod connecting seat 53. The push rod connecting seat 53 is located at the end of the output shaft of the vertical push rod 52 and is located at the bottom of the variable diameter telescopic rod 1. The mounting support 51 is located on one side of the vertical push rod 52.

[0025] Specifically, when different cooling heights need to be adjusted, the vertical push rod 52 is extended and retracted to drive the variable diameter telescopic rod 1 to move up and down as a whole, thereby adjusting the cooling height of the refrigeration pipe 43 and setting the refrigeration for the bubble blowing at different height positions.

[0026] In one embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the variable diameter telescopic rod 1 includes a hydraulic push rod or an electric telescopic rod. A pull rod 32 is provided on the output shaft of the variable diameter telescopic rod 1. A refrigeration pipe buckle 42 is provided at the end of the pull rod 32. The refrigeration pipe buckle 42 is connected to the refrigeration pipe 43 and is used to drive multiple refrigeration pipes 43 to move synchronously, thereby adjusting the change in the diameter of the inner side of the refrigeration pipe 43.

[0027] To clearly illustrate the above embodiments, refer to Figures 1-3 The specific working principle of the cooling device for plastic film production of this utility model is as follows: When the cooling device of this application is used, the vertical push rod 52 first drives the variable diameter telescopic rod 1 to move up and down as a whole, thereby adjusting the cooling height of the refrigeration pipe 43 and setting the cooling for the bubble blowing at different height positions.

[0028] Subsequently, the thin film bubble 6 is passed through the annular structure formed by multiple cooling pipes 43. The cold air inlet 21 is connected to the air source to deliver cold air to the cold air pipe 2. The cold air pipe 2 transmits the cold air evenly and at the same pressure to the air supply pipe 41 through the branch pipe 22, and then transmits it to each cooling pipe 43 through the air supply pipe 41. Finally, the cold air is evenly discharged from the air outlet 44 to blow air and cool the bubbles inside the cooling pipe 43.

[0029] Because the cooling pipe 43 is made of elastic material, the diameter of the annular space formed by multiple cooling pipes 43 can be changed by the synchronous expansion and contraction of the variable diameter telescopic rod 1. Therefore, the receiving diameter of the thin film bubble 6 can be freely changed, thereby adapting to thin film bubbles 6 of different diameters for adaptive cooling, resulting in more accurate and efficient cooling.

[0030] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A cooling device for producing plastic film, characterized in that, It includes a telescopic rod bracket (3), a variable diameter telescopic rod (1), and a refrigeration pipe (43). Multiple variable diameter telescopic rods (1) are provided and are arranged radially on the telescopic rod bracket (3). The refrigeration pipe (43) is provided on the output shaft of the variable diameter telescopic rod (1). The refrigeration pipe (43) is made of elastic material. Multiple refrigeration pipes (43) are connected end to end. Air outlets (44) are provided at equal intervals on the refrigeration pipe (43).

2. The cooling device for plastic film production according to claim 1, characterized in that, The telescopic rod bracket (3) is provided with a cold air pipe (2), and a branch pipe (22) is provided between the cold air pipe (2) and the refrigeration pipe (43). An air supply pipe (41) of elastic material is provided on the branch pipe (22).

3. The cooling device for plastic film production according to claim 1, characterized in that, The telescopic rod bracket (3) is a ring structure. The bottom of the telescopic rod bracket (3) is provided with a detachable telescopic rod connecting seat (31). The telescopic rod bracket (3) is connected to the telescopic rod (11) at the output end of the variable diameter telescopic rod (1) through the telescopic rod connecting seat (31).

4. The cooling device for plastic film production according to claim 1, characterized in that, The bottom of the variable diameter telescopic rod (1) is provided with a vertical lifting assembly (5). The vertical lifting assembly (5) includes a mounting bracket (51), a vertical push rod (52), and a push rod connecting seat (53). The push rod connecting seat (53) is located at the end of the output shaft of the vertical push rod (52) and is located at the bottom of the variable diameter telescopic rod (1). The mounting bracket (51) is located on one side of the vertical push rod (52).

5. The cooling device for plastic film production according to claim 1, characterized in that, The variable diameter telescopic rod (1) includes a hydraulic push rod or an electric telescopic rod. A pull rod (32) is provided on the output shaft of the variable diameter telescopic rod (1). A refrigeration pipe buckle (42) is provided at the end of the pull rod (32). The refrigeration pipe buckle (42) is connected to the refrigeration pipe (43).

6. The cooling device for plastic film production according to claim 2, characterized in that, The surface of the cold air pipe (2) is provided with a heat insulation layer. The air inlet end of the cold air pipe (2) is provided with a cold air inlet nozzle (21). The bottom of the cold air pipe (2) is connected to the cold air pipe (2) by a cold air pipe connector (23). The refrigeration pipe (43) is constructed in the shape of a spiral spring. The refrigeration pipe (43) includes a high thermal conductivity pipe.

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