Drying device for plastic protective film

Abstract

The utility model discloses a drying device for a plastic protective film, and relates to the technical field of drying devices, the drying device comprises a drying box and the plastic protective film, the interior of the drying box is slidably connected with a flow guide outer cover located on the outer side of the plastic protective film, and the interior of the drying box is fixedly provided with a flow guide inner cover located on the inner side of the plastic protective film; an annular flow guide plate is fixed at the tail end of one side of the flow guide inner cover. The first drying channel and the second drying channel are formed on the front side and the back side of the plastic protective film through the outer flow guide cover and the inner flow guide cover respectively, hot air generated by the heating module is directionally conveyed into the two channels in cooperation with the drying air knife, wrapping type hot air flowing is formed, and synchronous and uniform drying on the front side and the back side of the protective film is achieved. The problems that hot air flow in a traditional drying box is disordered, and a protective film is heated unevenly are solved, the limiting roller shafts enable the plastic protective film to be conveyed in a wave-shaped path, the retention time of the plastic protective film in the drying box is prolonged, and the drying effect can be improved without increasing the equipment size.

Description

Technical Field

[0001] This utility model relates to the field of drying device technology, specifically a drying device for plastic protective film. Background Technology

[0002] In the production and processing of plastic protective film, drying is a crucial step in ensuring product quality. In existing technologies, plastic protective film drying devices typically transport the plastic protective film into a drying chamber and use multiple sets of limiting rollers to restrict the movement of the plastic protective film. By extending its dwell path within the drying chamber, the drying time is increased. This structural design can, to a certain extent, achieve the drying process for plastic protective film.

[0003] However, for drying ovens that use hot air drying, the lack of reasonable airflow organization and guiding structure leads to turbulent airflow inside the oven, which cannot act evenly and stably on the surface of the plastic protective film. This results in uneven heating of different parts of the plastic protective film, with some areas potentially being over-dried while others fail to achieve the expected drying effect. This greatly affects the overall drying quality and production efficiency of the plastic protective film, making it difficult to meet the demands of modern industrial production for high-quality plastic protective films. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a drying device for plastic protective film to solve the technical problems in the background art mentioned above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a drying device for plastic protective film, comprising a drying box and a plastic protective film, wherein a flow guide cover located outside the plastic protective film is slidably connected inside the drying box;

[0006] The drying oven has a guide inner cover fixed inside the plastic protective film, and an annular guide plate is fixed at one end of the guide inner cover. A gap is formed between the annular guide plate and the guide inner cover. A first drying channel and a second drying channel are formed between the guide outer cover, the guide inner cover and the plastic protective film, respectively. The first drying channel and the second drying channel are used to uniformly dry the plastic protective film when hot air flows.

[0007] A conveyor roller is rotatably connected to one side of the inside of the drying box. Multiple sets of limiting rollers are rotatably connected to the top and bottom of the inside of the drying box. The plastic protective film is sequentially and movably limited by the conveyor roller and the multiple sets of limiting rollers. Under the action of the multiple sets of limiting rollers, the plastic protective film is made to have a wavy shape.

[0008] The annular guide plate is located inside the conveyor roller shaft, and the annular guide plate and the guide inner cover are fixedly connected by a connecting frame, and the outer wall of the end of the annular guide plate and the inner surface of the plastic protective film are in contact with each other;

[0009] The drying oven is equipped with a heating module. Inside the drying oven, there are drying air knives that are connected to the inner side of the outer and inner guide covers. The two sets of drying air knives and the heating module are connected to each other through hot air pipes. One end of the heating module is connected to the air inlet pipe, which is connected to an external gas generating device. The gas generated by the gas generating device is heated by the heating module and then delivered to the two sets of drying air knives before being sprayed out, which achieves the effect of uniformly drying the plastic protective film.

[0010] The top of the flow guide cover is fixed with a movable frame that extends through to the outside of the drying chamber. The movable frame is used to slide the flow guide cover open. Sleeves are fixed at one end of the top and one end of the flow guide cover, and a guide rod that is slidably connected to multiple sets of sleeves is fixed at one end of the drying chamber.

[0011] By adopting the above technical solution, a first drying channel and a second drying channel are formed on the front and back sides of the plastic protective film by the outer and inner guide covers, respectively. With the help of drying air knives, the hot air generated by the heating module is directionally delivered into the two channels, forming a sandwich-type hot air flow. This achieves synchronous and uniform drying of both sides of the protective film, effectively solving the problems of turbulent hot air flow and uneven heating of the protective film in traditional drying boxes. At the same time, the limiting rollers make the plastic protective film transported in a wave-shaped path, extending its residence time in the drying box. The drying effect can be improved without increasing the size of the equipment. In addition, the sealed design of the guide cover and the drying box reduces hot air leakage and improves heat energy utilization. The sliding guide cover and the opening and closing door design facilitate the installation, disassembly and maintenance of the protective film. The overall structure is compact and efficient, suitable for industrial continuous production, and can significantly improve the drying quality and production efficiency of plastic protective film.

[0012] Furthermore, a matching groove is provided at one end of the drying box to cooperate with the flow guide cover.

[0013] By adopting the above technical solution, when the flow guide cover is in the closed state, the sealing strip fixed at one end of it is squeezed and sealed with the mating through groove, which plays a role in closing the mating through groove.

[0014] Furthermore, an opening and closing door is movably connected to one end of the drying oven, and a sealing plate is fixed to the inner end face of the opening and closing door.

[0015] By adopting the above technical solution, the sealing plate plays a role in sealing the openings of the end faces of the outer and inner guide covers.

[0016] In summary, this utility model has the following beneficial effects: The utility model forms a first drying channel and a second drying channel on the front and back sides of the plastic protective film respectively through an outer and inner guide cover. Combined with a drying air knife, the hot air generated by the heating module is directionally transported into the two channels, forming a sandwich-type hot air flow. This achieves synchronous and uniform drying of both sides of the protective film, effectively solving the problems of turbulent hot air flow and uneven heating of the protective film in traditional drying ovens. Simultaneously, the limiting rollers allow the plastic protective film to be transported in a wave-shaped path, extending its residence time in the drying oven. This improves the drying effect without increasing the equipment volume. Furthermore, the sealed design of the outer guide cover and the drying oven reduces hot air leakage and improves heat energy utilization. The sliding outer guide cover and the opening / closing door design facilitate the installation, disassembly, and maintenance of the protective film. The overall structure is compact and efficient, suitable for continuous industrial production, and can significantly improve the drying quality and production efficiency of the plastic protective film. Attached Figure Description

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

[0018] Figure 2 This is a cross-sectional view of the entire utility model;

[0019] Figure 3 This is a first-view schematic diagram of the internal structure of this utility model;

[0020] Figure 4 This is a second-view schematic diagram of the internal structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the flow guide cover of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the flow guide inner cover of this utility model;

[0023] Figure 7 This is a schematic diagram of the overall structure of this utility model from another perspective.

[0024] In the diagram: 1. Drying oven; 2. Conveyor roller; 3. Limiting roller; 4. Plastic protective film; 5. Outer guide cover; 6. Inner guide cover; 7. Annular guide plate; 8. Connecting frame; 9. Moving frame; 10. Guide rod; 11. Sleeve; 12. Heating module; 13. Hot air duct; 14. Drying air knife; 15. Air inlet pipe; 16. Fitting groove; 17. Opening and closing door; 18. Sealing plate. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] The embodiments of this utility model will be described below based on its overall structure. Example 1

[0027] like Figure 1-7 As shown, this embodiment focuses on a plastic protective film drying device. Its structural design focuses on hot air guiding and uniform drying. It is mainly composed of components such as a drying box 1, a conveying roller 2, a limiting roller 3, a guide outer cover 5, a guide inner cover 6, and a drying air knife 14.

[0028] The drying oven 1 is made of stainless steel and has an internal door 17. A heating module 12 is installed on the inside to generate the hot air required for drying.

[0029] The conveying roller 2 is located on one side of the drying chamber 1 and is driven to rotate by the drive mechanism. It is used to pull the plastic protective film 4 into the drying area. Multiple sets of limiting rollers 3 are symmetrically distributed inside the drying chamber 1, so that the plastic protective film 4 is conveyed in a wave-shaped path, extending its residence path in the drying chamber.

[0030] The outer cover 5 is slidably connected to the guide rod 10 via the sleeve 11, and can be opened or closed manually. When closed, it seals with the through groove 16 of the drying box 1, and its inner side forms the first drying channel with the outer side of the plastic protective film 4.

[0031] The inner guide cover 6 is fixed inside the drying oven 1, and the end is connected by the connecting frame 8 to install the annular guide plate 7. The annular guide plate 7 is attached to the inner side of the plastic protective film 4, and a second drying channel is formed between the inner guide cover 6, the annular guide plate 7 and the plastic protective film 4.

[0032] Two sets of drying air knives 14 are respectively set inside the outer guide cover 5 and the inner guide cover 6, and are connected to the heating module 12 through the hot air pipe 13, which is used to evenly guide the heated hot air to the front and back of the plastic protective film 4.

[0033] Protective film installation and equipment preparation

[0034] Open the opening and closing door 17 and the flow guide cover 5, wrap one end of the plastic protective film 4 to be dried around the conveyor roller 2, and pass it around each limiting roller 3 in sequence, so that the protective film is arranged in a wavy path to ensure that it is flat and wrinkle-free.

[0035] Close the outer cover 5 of the flow guide and adjust its position by moving the frame 9 to make it seal with the drying box 1. At the same time, confirm that the annular flow guide plate 7 is in contact with the inner side of the plastic protective film 4.

[0036] Drying operation process

[0037] When the heating module 12 is activated, outside air enters through the air inlet pipe 15 and is heated. The hot air is then delivered to the two sets of drying air knives 14 through the hot air pipe 13.

[0038] The drying air knife 14 blows hot air into the first drying channel (outside the plastic protective film 4) and the second drying channel (inside the plastic protective film 4) to form a sandwich-type hot air flow, which simultaneously dries the front and back of the protective film.

[0039] The conveyor roller 2 drives the plastic protective film 4 to move along a wavy path, extending its residence time in the drying chamber 1 and ensuring that the hot air fully acts on the surface of the protective film.

[0040] Equipment Operation and Maintenance

[0041] During the drying process, the operating status of the protective film is monitored through an observation window or control system to ensure that there is no shifting or wrinkling.

[0042] After the operation is completed, turn off the heating module 12 and the conveyor roller 2, open the opening and closing door 17 and the guide cover 5, and take out the dried plastic protective film 4.

[0043] Regularly clean and dry the air outlet and guide channel of the air knife 14 to prevent debris from accumulating and affecting the flow of hot air. At the same time, check the integrity of the sealing components to ensure stable equipment performance.

[0044] The working principle of this utility model is as follows: When in use, the operator first manually opens the opening and closing door 17, so that the opening and closing door 17 drives the sealing plate 18 to disengage from the drying box 1. Then, the operator manually moves the guide cover 5 along the multiple sets of guide rods 10 through the moving frame 9, so that one end of the guide cover 5 passes through the mating groove 16 and opens, thereby exposing the conveying roller shaft 2 and the multiple sets of limiting roller shafts 3. This makes it easier for the operator to wrap the plastic protective film 4 to be dried in sequence around the conveying roller shaft 2 and the multiple sets of limiting roller shafts 3. Under the action of the conveying roller shaft 2, the plastic protective film 4 can be conveyed.

[0045] After the plastic protective film 4 is installed, manually reset the guide cover 5 to its initial state using the moving frame 9, so that the guide cover 5 is located outside the plastic protective film 4 and covers it. Then, in conjunction with the guide inner cover 6 fixed inside the plastic protective film 4, the drying hot air can specifically dry the plastic protective film 4.

[0046] Specifically, a first drying channel is formed between the inner side of the guide cover 5 and the outer side of the plastic protective film 4. With the cooperation of the guide cover 5 and the annular guide plate 7, a second drying channel is formed between the guide cover 5 and the inner side of the plastic protective film 4. Then, under the action of the two sets of drying air knives 14, the hot air discharged from the heating module 12 is respectively transported to the inside of the two sets of drying channels. The two sets of drying channels and the plastic protective film 4 have the same direction and the same spacing, so that when the hot air enters the drying channel for drying operation, the plastic protective film 4 is dried better.

[0047] In summary, by setting up the outer guide cover 5 and the inner guide cover 6, a first drying channel and a second drying channel are formed between the two and the plastic protective film 4, respectively. The two drying channels are aligned with the direction and spacing of the plastic protective film 4. With the help of the drying air knife 14, hot air is precisely delivered into the drying channel, achieving directional and uniform drying of the plastic protective film 4. This effectively solves the problem of uneven heating of the plastic protective film 4 caused by turbulent hot air flow in the prior art, improves the overall drying quality and production efficiency, and meets the production needs of modern industry for high-quality plastic protective film.

[0048] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A drying apparatus for plastic protective film, comprising a drying chamber (1) and a plastic protective film (4), characterized in that: The drying oven (1) has a flow guide cover (5) that is slidably connected inside and located outside the plastic protective film (4). The drying oven (1) has a guide inner cover (6) fixed inside the plastic protective film (4), and an annular guide plate (7) is fixed at one end of the guide inner cover (6), and a gap is formed between the annular guide plate (7) and the guide inner cover (6). A first drying channel and a second drying channel are formed between the guide outer cover (5), the guide inner cover (6) and the plastic protective film (4), respectively. The first drying channel and the second drying channel are used to uniformly dry the plastic protective film (4) when hot air flows.

2. The drying apparatus for plastic protective film according to claim 1, characterized in that: The drying box (1) is rotatably connected to a conveying roller (2) on one side. Multiple sets of limiting rollers (3) are rotatably connected to the top and bottom of the drying box (1). The plastic protective film (4) is movably limited and connected to the conveying roller (2) and multiple sets of limiting rollers (3) in sequence. Under the action of multiple sets of limiting rollers (3), the plastic protective film (4) is made to have a wavy shape.

3. The drying apparatus for plastic protective film according to claim 1, characterized in that: The annular guide plate (7) is located inside the conveying roller shaft (2), and the annular guide plate (7) and the guide inner cover (6) are fixedly connected by a connecting frame (8), and the outer wall of the end of the annular guide plate (7) and the inner surface of the plastic protective film (4) are in contact with each other.

4. The drying apparatus for plastic protective film according to claim 1, characterized in that: The top of the flow guide cover (5) is fixed with a movable frame (9) that extends through to the outside of the drying box (1), and the movable frame (9) is used to slide the flow guide cover (5) open.

5. The drying apparatus for plastic protective film according to claim 4, characterized in that: The top and bottom ends of the flow guide cover (5) are both fixed with sleeves (11), and one end of the drying box (1) is fixed with a guide rod (10) that is slidably connected to multiple sets of sleeves (11).

6. The drying apparatus for plastic protective film according to claim 1, characterized in that: The drying box (1) is equipped with a heating module (12), and the drying box (1) is fixed with a drying air knife (14) that is connected to the inner side of the guide outer cover (5) and the guide inner cover (6).

7. The drying apparatus for plastic protective film according to claim 6, characterized in that: The two sets of drying air knives (14) and heating modules (12) are interconnected by hot air pipes (13), and one end of the heating module (12) is connected to the air inlet pipe (15) to the outside. The air inlet pipe (15) is connected to the external gas generating equipment. The gas generated by the gas generating equipment is heated by the heating module (12) and then transported to the inside of the two sets of drying air knives (14) and then sprayed out, so as to achieve the uniform drying effect on the plastic protective film (4).

8. The drying apparatus for plastic protective film according to claim 1, characterized in that: The drying box (1) has a matching groove (16) at one end that matches the flow guide cover (5). When the flow guide cover (5) is closed, the sealing strip fixed at one end of it is squeezed and sealed to the matching groove (16), which plays a role in closing the matching groove (16).

9. The drying apparatus for plastic protective film according to claim 1, characterized in that: The drying oven (1) is movably connected to an opening and closing door (17) at one end, and a sealing plate (18) is fixed on the inner end face of the opening and closing door (17). The sealing plate (18) serves to seal the openings of the end faces of the outer guide cover (5) and the inner guide cover (6).

Images