A high-temperature aging test chamber for PET film

Abstract

This utility model relates to the field of PET film testing technology and discloses a PET film high-temperature aging test chamber, comprising: a high-temperature test chamber body, wherein a clamping mechanism is provided inside the high-temperature test chamber body, the clamping mechanism including a base frame inserted into the high-temperature test chamber body, two pairs of columns fixedly installed on the top surface of the base frame, a fixed roller fixedly installed on the side of one pair of columns, and a movable roller rotatably connected to the side of the other pair of columns. This PET film high-temperature aging test chamber, by setting the clamping mechanism inside the high-temperature test chamber body, utilizes the fixed roller and the movable roller to clamp the PET film after tightening the first screw and compressing the clamping plate, and the movable roller can be rotated using a handwheel to wind up the PET film, further taut and flattening the PET film. By tightening the second screw, it tightly abuts against the connecting shaft of the movable roller to lock the overall structure, ensuring the stability of the overall structure and meeting the actual high-temperature aging test requirements of PET film.

Description

Technical Field

[0001] This utility model relates to the field of PET film testing technology, specifically a PET film high-temperature aging testing chamber. Background Technology

[0002] High-temperature testing of PET film is a key step in evaluating the performance stability of polyethylene terephthalate (PET) film under high-temperature conditions.

[0003] Traditional clamps inside testing chambers (such as spring clamps and magnetic clamps) may cause the film to loosen at high temperatures due to thermal expansion of the material or weakening of the magnetic force. Furthermore, the air layer at the folds of the film can hinder heat transfer, leading to local temperature deviations. The temperature at the fold apex may be lower than that of the flat area, affecting the assessment of the aging rate. To address these issues, we propose a high-temperature aging testing chamber for PET film. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a high-temperature aging test chamber for PET films, which solves the problems mentioned in the background.

[0005] This utility model provides the following technical solution: a PET film high-temperature aging test chamber, comprising: a high-temperature test chamber body, wherein a clamping mechanism is provided inside the high-temperature test chamber body, the clamping mechanism including a base frame inserted into the high-temperature test chamber body, two pairs of columns fixedly installed on the top surface of the base frame, wherein a fixed roller is fixedly installed on the side of one pair of columns, and a movable roller is rotatably connected to the side of the other pair of columns, and clamping components are provided on both the fixed roller and the movable roller; a flattening mechanism is provided on the column where the movable roller is provided, the flattening mechanism including a connecting shaft rotatably disposed inside the column and a second screw threadedly connected to the column, a handwheel fixedly installed at one end of the connecting shaft, and a movable roller fixedly installed at the other end of the connecting shaft, a raised rib layer is provided on the outer surface of the connecting shaft, and a rubber pad is fixedly installed at the end of the second screw adjacent to the raised rib layer.

[0006] Preferably, the clamping member includes a threaded sleeve embedded inside the fixed roller and a clamping plate slidably connected to the fixed roller. The fixed roller is threadedly connected to a first screw through the threaded sleeve, and the lower end of the first screw can contact the clamping plate.

[0007] Preferably, the moving roller also has a cavity for accommodating the sliding of the clamping plate.

[0008] Preferably, a receiving plate is inserted into the inner side of the column, and the receiving plate is located below the fixed roller and the moving roller.

[0009] Preferably, the frame of the receiving plate is fitted with a pin, and the pin can also be fitted with the base frame.

[0010] Preferably, a handle is fixedly installed on the top surface of the base frame, and the handle has a U-shaped structure design.

[0011] Preferably, the column has an internal cavity for accommodating the rubber pad, and when the second screw is tightened, the rubber pad is compressed and can be embedded in the gap of the convex layer.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This PET film high-temperature aging test chamber has a clamping mechanism inside the chamber. The fixed roller and the moving roller clamp the PET film after the first screw is tightened and the clamping plate is compressed. The moving roller can be rotated by a handwheel to wind up the PET film and further tighten and flatten it. After tightening the second screw, it presses tightly against the connecting shaft of the moving roller to lock the overall structure and ensure its stability, thus meeting the actual high-temperature aging test requirements of PET film. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the clamping mechanism of this utility model; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a cross-sectional schematic diagram of the column structure of this utility model.

[0014] In the diagram: 1. High-temperature detection chamber; 2. Clamping mechanism; 21. Base frame; 22. Column; 23. Receiving plate; 24. Fixed roller; 241. Moving roller; 25. First screw; 26. Clamping plate; 27. Pin; 28. Handle; 29. ​​Threaded sleeve; 3. Flattening mechanism; 31. Handwheel; 32. Connecting shaft; 33. Ribbed layer; 34. Rubber pad; 35. Second screw. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-4A high-temperature aging test chamber for PET film includes: a high-temperature test chamber 1, with a clamping mechanism 2 inside the chamber 1. The clamping mechanism 2 includes a base frame 21 that is inserted into the high-temperature test chamber 1, supporting the entire clamping mechanism 2 and enabling modular installation and disassembly. Two pairs of columns 22 are fixedly installed on the top surface of the base frame 21, providing an installation support structure for a fixed roller 24, a moving roller 241, and a receiving plate 23, ensuring the stability of each component and ensuring smooth clamping and testing operations. A fixed roller 24 is fixedly installed on the side of one pair of columns 22, and a moving roller 241 is rotatably connected to the side of the other pair of columns 22. The fixed roller 24 and the moving roller 241 cooperate to clamp the PET film, achieving dynamic flattening. A receiving plate 23 is inserted into the inner side of the columns 22, providing a receiving platform for the PET film. Pins 27 are inserted into the frame of the receiving plate 23, which can also be inserted into the base frame 21 for convenient installation and disassembly of the receiving plate 23. The PET film is disassembled for easy cleaning and maintenance. The receiving plate 23 is located below the fixed roller 24 and the moving roller 241. Both the fixed roller 24 and the moving roller 241 are equipped with clamping components. The clamping components include a threaded sleeve 29 embedded in the fixed roller 24 and a clamping plate 26 slidably connected to the fixed roller 24. The fixed roller 24 is threadedly connected to a first screw 25 through the threaded sleeve 29. The lower end of the first screw 25 can contact the clamping plate 26. The moving roller 241 is also provided with a cavity for accommodating the sliding of the clamping plate 26. The clamping plate 26 is used to clamp the PET film, forming a surface contact clamping area, dispersing the clamping force, avoiding damage to the PET film due to concentrated force, ensuring the stability and reliability of clamping, and protecting the integrity of the PET film to ensure that the test results accurately reflect the performance of the film itself. A handle 28 is fixedly installed on the top surface of the base frame 21. The handle 28 has a U-shaped structure design to assist in the insertion and removal operation of the base frame 21. The U-shaped handle 28 conforms to the hand grip curve.

[0017] A flattening mechanism 3 is provided on the column 22 equipped with the movable roller 241. The flattening mechanism 3 includes a connecting shaft 32 rotatably disposed inside the column 22 and a second screw 35 threadedly connected to the column 22. A handwheel 31 is fixedly installed at one end of the connecting shaft 32, which is convenient for the operator to manually rotate. The handwheel 31 drives the movable roller 241 to rotate through the connecting shaft 32. The operation is simple and labor-saving, and it is easy to control the degree of rotation of the movable roller 241 to effectively eliminate PET film wrinkles. The movable roller 241 is fixedly installed at the other end of the connecting shaft 32. The outer surface of the connecting shaft 32 is provided with a raised rib layer 33. A rubber pad 34 is fixedly installed at the end of the second screw 35 adjacent to the raised rib layer 33. The inside of the column 22 is provided to accommodate the rubber pad 34. The cavity of 4 is tightened, and the second screw 35 is screwed in. After the rubber pad 34 is squeezed, it can be embedded in the gap of the convex layer 33. Under the dual action of the threaded engagement and the squeezing of the rubber pad 34, the rotation of the connecting shaft 32 and the moving roller 241 is restricted, preventing the moving roller 241 from rotating due to external force or PET film tension during the detection process, ensuring the flatness of the PET film and the stability of the detection. It can be used to lock the position of the moving roller 241 to prevent high temperature rebound. In addition, the rubber pad 34 is made of fluororubber, and the continuous operating temperature can reach 200℃, which is far beyond the maximum operating temperature of the detection box. The rubber pad 34 is elastic and avoids damage to the surface of the connecting shaft 32, ensuring the normal use of the connecting shaft 32 and the stability of the flattening mechanism 3.

[0018] Working principle: The entire base frame 21 can be inserted into the inner cavity of the high-temperature detection chamber 1, allowing for easy removal and operation. Both the fixed roller 24 and the moving roller 241 are equipped with clamping plates 26, threaded sleeves 29, and a first screw 25. A cavity for sliding of the clamping plates 26 is provided between the fixed roller 24 and the moving roller 241. Therefore, after tightening the first screw 25, the clamping plates 26 can be used to hold the PET film, forming a surface-contact clamping area to disperse the clamping force. Then, the film can be rotated... The handwheel 31 drives the moving roller 241 to rotate via the connecting shaft 32, actively winding up the loose PET film, eliminating wrinkles, and finally tightening the second screw 35, so that the rubber pad 34 at the end of the second screw 35 tightly abuts against the ridge layer 33 on the surface of the connecting shaft 32. The rubber pad 34 is squeezed, so that the rubber pad 34 is embedded in the gap between the ridge layers 33. Thus, under the dual action of the threaded engagement of the second screw 35 and the squeezing of the rubber pad 34, the rotation of the connecting shaft 32 and the moving roller 241 is restricted.

[0019] 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 PET film high temperature aging detection box, characterized in that, include: A high-temperature detection chamber (1) is provided with a clamping mechanism (2) inside the high-temperature detection chamber (1). The clamping mechanism (2) includes a base frame (21) that is inserted into the high-temperature detection chamber (1). Two pairs of columns (22) are fixedly installed on the top surface of the base frame (21). A fixed roller (24) is fixedly installed on the side of one pair of columns (22), and a moving roller (241) is rotatably connected to the side of the other pair of columns (22). Clamping parts are provided on both the fixed roller (24) and the moving roller (241). A flattening mechanism (3) is provided on the column (22) on which the moving roller (241) is provided. The flattening mechanism (3) includes a connecting shaft (32) rotatably disposed inside the column (22) and a second screw (35) threadedly connected to the column (22). A handwheel (31) is fixedly installed at one end of the connecting shaft (32), and the moving roller (241) is fixedly installed at the other end of the connecting shaft (32). A raised rib layer (33) is provided on the outer surface of the connecting shaft (32), and a rubber pad (34) is fixedly installed at the end of the second screw (35) adjacent to the raised rib layer (33).

2. The PET film high-temperature aging detection box according to claim 1, characterized in that, The clamping component includes a threaded sleeve (29) embedded inside the fixed roller (24) and a clamping plate (26) slidably connected to the fixed roller (24). The fixed roller (24) is threadedly connected to a first screw (25) through the threaded sleeve (29). The lower end of the first screw (25) can contact the clamping plate (26).

3. The PET film high temperature aging detection box according to claim 2, characterized in that, The moving roller (241) also has a cavity for accommodating the sliding of the clamping plate (26).

4. The PET film high temperature aging detection box according to claim 1, characterized in that, A receiving plate (23) is inserted into the inner side of the column (22), and the receiving plate (23) is located below the fixed roller (24) and the moving roller (241).

5. A PET film high-temperature aging test chamber according to claim 4, characterized in that, The frame of the receiving plate (23) is fitted with a pin (27), which can also be fitted with the base frame (21).

6. The PET film high temperature aging detection box according to claim 1, characterized in that, A handle (28) is fixedly installed on the top surface of the base frame (21), and the handle (28) is a U-shaped structure design.

7. The PET film high-temperature aging detection box according to claim 1, characterized in that, The column (22) has a cavity for accommodating the rubber pad (34) inside. When the second screw (35) is tightened, the rubber pad (34) can be embedded in the gap of the convex layer (33) after being squeezed.

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