Cooling mechanism for unidirectional stretching production of PET casting film

Abstract

The utility model relates to the technical field of film production, and discloses a cooling mechanism for unidirectional stretching production of a PET casting film, which comprises a cooling pipeline, an air cooler, an air inlet pipe, an air conveying pipe and a lifting mechanism, the air cooler is arranged at the top of the cooling pipeline, the air inlet pipe is arranged at the top of the air cooler, the air conveying pipe is arranged on one side of the air cooler, and the lifting mechanism is arranged on the other side of the air cooler. The lifting mechanism is arranged on one side of the cooling pipeline, the cooling pipeline comprises an outer pipe body, a first rotating roller, an adjusting rotating roller, a second rotating roller, a bottom blowing pipe and a top blowing pipe, the first rotating roller is rotationally connected to one end of the interior of the outer pipe body, the adjusting rotating roller is installed on one side of the first rotating roller, and the second rotating roller is installed on one side of the top blowing pipe. The second rotating roller is rotationally connected to the other end of the interior of the outer pipe body. According to the cooling mechanism for unidirectional stretching production of the PET casting film, the film is conveyed through the first rotating roller and the second rotating roller, air cooling is conducted on the film through the bottom and the top at the same time, and the cooling efficiency is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of film production technology, specifically a cooling mechanism for unidirectional stretching production of PET cast film. Background Technology

[0002] PET cast film is a type of polyethylene terephthalate (PET) film produced by casting. PET is a thermoplastic polyester made from terephthalic acid (PTA) and ethylene glycol (EG) through a polycondensation reaction, and it has good physical properties, chemical stability and transparency.

[0003] According to the authorization announcement number CN220313938U, a cooling mechanism for unidirectional stretching production of PET cast film is disclosed, including a box body. Inside the box body, two cooling rollers are rotatably connected via bearings. Both ends of the cooling rollers are rotatably connected to a housing. A storage box is provided at the bottom of the box body. The front of the storage box is connected to a first connecting pipe, and the other end of the first connecting pipe is connected to a water pump. The user can pass the PET cast film through the rotating rollers to contact the cooling rollers. Then, the water pump is started to draw the cooling medium into the interior of the cooling rollers through the first connecting pipe and the T-connector. Then, the cooling medium flows back to the interior of the storage box through the second connecting pipe, so that the cooling medium rapidly cools the PET cast film through the cooling rollers. The user can start the motor to drive the fan blades to rotate, and then the fan blades will air-cool the PET cast film, thereby effectively improving the cooling efficiency of the device.

[0004] However, the above-mentioned devices are still insufficient. The air-cooling method uses a single fan blade to cool the film, but it can only cool the film from top to bottom, resulting in low cooling efficiency. The heat at the bottom is still higher than that at the top, which affects the cooling efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a cooling mechanism for unidirectional stretching production of PET cast films, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cooling mechanism for unidirectional stretching production of PET cast film, comprising a cooling pipe, a cooler, an air inlet pipe, an air delivery pipe, and a lifting mechanism. The cooler is located at the top of the cooling pipe, the air inlet pipe is located at the top of the cooler, the air delivery pipe is installed on one side of the cooler, and the lifting mechanism is located on one side of the cooling pipe.

[0007] The cooling pipe includes an outer tube, a first rotating roller, an adjusting rotating roller, a second rotating roller, a bottom air blower, and a top air blower. The first rotating roller is rotatably connected to one end inside the outer tube. The adjusting rotating roller is installed on one side of the first rotating roller. The second rotating roller is rotatably connected to the other end inside the outer tube. The bottom air blower is installed at the bottom inside the outer tube, and the top air blower is installed at the top inside the outer tube. The film is conveyed by the first and second rotating rollers, and the film is simultaneously cooled by air from the bottom and top to ensure cooling efficiency.

[0008] Preferably, one side of the adjusting roller is connected to a lifting mechanism. The lifting mechanism drives the adjusting roller to adjust its height within the outer tube, thereby adjusting the tension of the film conveying and meeting the requirements of film production where stretching occurs.

[0009] Preferably, the lifting mechanism includes a mounting frame, a lifting block, a lifting column, and a cylinder. The mounting frame is fixedly connected to one side of the outer tube body, the lifting block is lifted and connected to the inside of the mounting frame, the lifting column is fixedly connected to the bottom of the lifting block, the cylinder is located at the bottom of the mounting frame, and one end of the lifting block is rotatably connected to the adjusting roller. The lifting column is lifted and lowered by the cylinder, and the adjusting roller is adjusted by the lifting block.

[0010] Preferably, there are two sets of lifting mechanisms, which are respectively set at both ends of the adjusting roller to ensure stable height adjustment of the adjusting roller.

[0011] Preferably, the air supply pipe includes a connecting pipe, a branch pipe, a first connecting pipe, and a second connecting pipe. The connecting pipe is flanged and connected to one end of the air cooler. The branch pipe is located at the other end of the connecting pipe. The first connecting pipe is located at one end of the branch pipe, and the second connecting pipe is located at the other end of the branch pipe. The first connecting pipe passes through the outer pipe body and is connected to the bottom air blowing pipe flange. The second connecting pipe passes through the outer pipe body and is connected to the top air blowing pipe flange. This is used to blow air from the air cooler onto the membrane for cooling.

[0012] Preferably, a drive motor and a transmission belt are provided on the other side of the outer tube to drive the first and second rollers to rotate synchronously, thereby conveying the film.

[0013] Preferably, the inner wall of the outer tube is provided with a groove, the size of which is the same as the size of the mounting frame, for mounting the mounting frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The cooling mechanism for unidirectional stretching production of PET cast film uses a first roller and a second roller to transport the film, and simultaneously air-cools the film from the bottom and top to ensure cooling efficiency.

[0016] 2. The cooling mechanism for the unidirectional stretching production of PET cast film uses a cylinder to drive the lifting column to rise and fall, and the lifting block drives the adjusting roller to adjust the height. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cooling pipe structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the lifting mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the air supply pipe of this utility model.

[0021] In the diagram: 1. Cooling pipe; 2. Air cooler; 3. Air inlet pipe; 4. Air delivery pipe; 5. Lifting mechanism; 101. Outer pipe body; 102. First rotating roller; 103. Adjusting rotating roller; 104. Second rotating roller; 105. Bottom air blowing pipe; 106. Top air blowing pipe; 401. Connecting pipe; 402. Diverter pipe; 403. First connecting pipe; 404. Second connecting pipe; 501. Mounting frame; 502. Lifting block; 503. Lifting column; 504. Cylinder. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a cooling mechanism for unidirectional stretching production of PET cast film, including a cooling pipe 1, a cold air blower 2, an air inlet pipe 3, an air delivery pipe 4 and a lifting mechanism 5. The cold air blower 2 is located at the top of the cooling pipe 1, the air inlet pipe 3 is located at the top of the cold air blower 2, the air delivery pipe 4 is installed on one side of the cold air blower 2, and the lifting mechanism 5 is located on one side of the cooling pipe 1.

[0024] The cooling pipe 1 includes an outer pipe body 101, a first rotating roller 102, an adjusting rotating roller 103, a second rotating roller 104, a bottom air blower 105, and a top air blower 106. The first rotating roller 102 is rotatably connected to one end inside the outer pipe body 101. The adjusting rotating roller 103 is installed on one side of the first rotating roller 102. The second rotating roller 104 is rotatably connected to the other end inside the outer pipe body 101. The bottom air blower 105 is installed at the bottom inside the outer pipe body 101. The top air blower 106 is installed on the outer pipe body 101. Inside the top of the outer tube 101, the film is conveyed by the first roller 102 and the second roller 104. The film is cooled by air from both the bottom and the top to ensure cooling efficiency. A drive motor and a transmission belt are provided on the other side of the outer tube 101 to drive the first roller 102 and the second roller 104 to rotate synchronously and convey the film. The inner wall of the outer tube 101 has a groove with the same size as the mounting frame 501 for mounting the mounting frame 501.

[0025] One side of the adjusting roller 103 is connected to the lifting mechanism 5. The lifting mechanism 5 drives the adjusting roller 103 to adjust its height inside the outer tube 101, thereby adjusting the tension of the film conveying and meeting the needs of film production where stretching occurs.

[0026] The lifting mechanism 5 includes a mounting frame 501, a lifting block 502, a lifting column 503, and a cylinder 504. The mounting frame 501 is fixedly connected to one side of the outer tube 101. The lifting block 502 is flexibly connected to the inside of the mounting frame 501. The lifting column 503 is fixedly connected to the bottom of the lifting block 502. The cylinder 504 is located at the bottom of the mounting frame 501. One end of the lifting block 502 is rotatably connected to the adjusting roller 103. The lifting column 503 is raised and lowered by the cylinder 504, and the adjusting roller 103 is adjusted in height by the lifting block 502. There are two sets of lifting mechanisms 5, which are respectively located at both ends of the adjusting roller 103 to ensure stable height adjustment of the adjusting roller 103.

[0027] The air duct 4 includes a connecting pipe 401, a branch pipe 402, a first connecting pipe 403, and a second connecting pipe 404. The connecting pipe 401 is flanged and connected to one end of the air cooler 2. The branch pipe 402 is located at the other end of the connecting pipe 401. The first connecting pipe 403 is located at one end of the branch pipe 402, and the second connecting pipe 404 is located at the other end of the branch pipe 402. The first connecting pipe 403 passes through the outer pipe body 101 and is flanged and connected to the bottom air blowing pipe 105. The second connecting pipe 404 passes through the outer pipe body 101 and is flanged and connected to the top air blowing pipe 106. It is used to blow air from the air cooler 2 to cool the membrane.

[0028] When in use, the film is passed sequentially through the first rotating roller 102, the adjusting rotating roller 103, and the second rotating roller 104. Then, by starting the cold air fan 2, cold air is delivered to the bottom air blowing pipe 105 and the top air blowing pipe 106 through the air supply pipe 4. Subsequently, air is blown on the top and bottom of the conveyed film to cool it. During the transmission of the film, the adjusting rotating roller 103 is adjusted by the lifting mechanism 5 to ensure the tension of the conveyed film.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling mechanism for unidirectional stretching production of PET cast film, comprising a cooling pipe (1), a cooler (2), an air inlet pipe (3), an air delivery pipe (4), and a lifting mechanism (5), characterized in that: The air cooler (2) is located at the top of the cooling pipe (1), the air inlet pipe (3) is located at the top of the air cooler (2), the air delivery pipe (4) is installed on one side of the air cooler (2), and the lifting mechanism (5) is located on one side of the cooling pipe (1). The cooling pipe (1) includes an outer pipe body (101), a first rotating roller (102), an adjusting rotating roller (103), a second rotating roller (104), a bottom air blower (105), and a top air blower (106). The first rotating roller (102) is rotatably connected to one end inside the outer pipe body (101). The adjusting rotating roller (103) is installed on one side of the first rotating roller (102). The second rotating roller (104) is rotatably connected to the other end inside the outer pipe body (101). The bottom air blower (105) is installed at the bottom inside the outer pipe body (101). The top air blower (106) is installed at the top inside the outer pipe body (101).

2. The cooling mechanism for unidirectional stretching production of PET cast film according to claim 1, characterized in that: One side of the adjusting roller (103) is connected to the lifting mechanism (5).

3. The cooling mechanism for unidirectional stretching production of PET cast film according to claim 1, characterized in that: The lifting mechanism (5) includes a mounting frame (501), a lifting block (502), a lifting column (503), and a cylinder (504). The mounting frame (501) is fixedly connected to one side of the outer tube (101). The lifting block (502) is lifted and connected to the inside of the mounting frame (501). The lifting column (503) is fixedly connected to the bottom of the lifting block (502). The cylinder (504) is located at the bottom of the mounting frame (501). One end of the lifting block (502) is rotatably connected to the adjusting roller (103).

4. A cooling mechanism for unidirectional stretching production of PET cast film according to claim 1, characterized in that: The lifting mechanism (5) consists of two sets, which are respectively located at both ends of the adjusting roller (103).

5. A cooling mechanism for unidirectional stretching production of PET cast film according to claim 1, characterized in that: The air duct (4) includes a connecting pipe (401), a branch pipe (402), a first connecting pipe (403), and a second connecting pipe (404). The connecting pipe (401) is flanged and connected to one end of the air cooler (2). The branch pipe (402) is located at the other end of the connecting pipe (401). The first connecting pipe (403) is located at one end of the branch pipe (402), and the second connecting pipe (404) is located at the other end of the branch pipe (402).

6. A cooling mechanism for unidirectional stretching production of PET cast film according to claim 1, characterized in that: A drive motor and a transmission belt are provided on the other side of the outer tube (101).

7. A cooling mechanism for unidirectional stretching production of PET cast film according to claim 1, characterized in that: The inner wall of the outer tube (101) is provided with a groove, the size of which is the same as the size of the mounting frame (501).

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