Drying device for plastic film production

Abstract

The utility model relates to a drying device for plastic film production, which comprises a machine frame, a conveying device, a drying device and a cooling device, the conveying device, the drying device and the cooling device are arranged on the machine frame, the machine frame is provided with a filtering structure for filtering poisonous gas, and the machine frame is provided with an extruding structure for extruding a plastic film. The filter structure comprises a filter box fixedly mounted on the upper surface of the rack, an exhaust pipe fixedly mounted on the upper surface of the filter box, an exhaust fan fixedly mounted in the exhaust pipe, a filter plate detachably mounted in the filter box, and a breather pipe fixedly mounted on the lower surface of the filter box and extending into the rack. According to the drying device for plastic film production, gas is sucked in through the movable exhaust fan and the ventilation pipe and filtered through the filter plate, harmful gas generated during drying can be filtered, meanwhile, it can be guaranteed that air in the rack box is clean, and therefore the advantages that practicability is high, and poisonous gas generated during drying can be treated are achieved.

Description

Technical Field

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

[0002] Plastic film refers to a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, which is used for packaging and as a coating layer. Plastic packaging and plastic packaging products occupy an increasingly large share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields, among which food packaging accounts for the largest proportion, such as beverage packaging, frozen food packaging, steamed food packaging, fast food packaging, etc. These products have brought great convenience to people's lives. During the production process, some plastic films need to be printed on the outside according to their use. The surface of the printed film needs to be dried by special drying equipment to facilitate the collection and centralized storage of the plastic film.

[0003] After searching, Chinese patent CN217455364U discloses a drying device for plastic film production, including a fixed frame, and a servo motor is fixedly installed on the outside of the fixed frame. The drying device for plastic film production, through the coordinated use of the cold air unit and the No. 2 connecting pipe, the squeezing roller and the cooling cabin, enables the plastic film to follow the conveyor belt to move to the bottom of the cooling cabin after the drying work is completed. At this time, the cold air unit can work and prepare cold air, inject the cold air into the cooling cabin through the No. 2 connecting pipe, and then evenly spray the outside of the plastic film through the cooling cabin to reduce the external temperature of the plastic film. At the same time, the squeezing roller cooperates with the conveyor belt and the pad to squeeze and fix the plastic film to prevent the plastic film from falling off from the outside of the conveyor belt under the action of the wind beam, so that the drying device for plastic film production can quickly restore the temperature of the plastic film after drying.

[0004] The utility model relates to a drying device for producing plastic films, which dries the plastic films through drying equipment. However, certain toxic gases are generated when the plastic films are dried, and these toxic gases are inconvenient to handle. Over time, they will cause certain harm to the human body, seriously affecting the production environment of the plastic films and failing to meet the use requirements. Therefore, a drying device for producing plastic films is proposed to solve the above-mentioned problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a drying device for plastic film production, which has the advantages of strong practicality and the ability to handle toxic gases generated during drying. It solves the problem that certain toxic gases will be generated when the material film is dried, and these toxic gases are inconvenient to handle and will cause certain harm to the human body over time.

[0006] To achieve the above object, the utility model provides the following technical solution: a drying device for plastic film production, comprising a frame, a conveying device, a drying device and a cooling device arranged on the frame, the frame being provided with a filtering structure for filtering toxic gases, and the frame being provided with an extrusion structure for extruding plastic film;

[0007] The filtering structure includes a filter box fixedly mounted on the upper surface of the frame, an exhaust pipe fixedly mounted on the upper surface of the filter box, an exhaust fan fixedly mounted inside the exhaust pipe, a filter plate detachably mounted inside the filter box, and a ventilation pipe fixedly mounted on the lower surface of the filter box and extending to the inside of the frame;

[0008] The extrusion structure comprises an electric push rod fixedly mounted on the inner top wall of the frame, a mounting frame fixedly mounted on the output end of the electric push rod, a pressing roller and an elastic component arranged on the mounting frame.

[0009] Furthermore, the exhaust pipe is communicated with a filter box, and the filter box is located between the drying equipment and the cooling equipment.

[0010] Furthermore, mounting seats are fixedly installed between the inner walls on opposite sides of the filter box, and the filter plate is located between the two mounting seats. Fastening pins for fixing the filter plate are installed inside the mounting seats.

[0011] Furthermore, the number of the filter plates is two, and the two filter plates are arranged up and down, and the number of the ventilation pipes is several.

[0012] Furthermore, the elastic component includes an elastic telescopic rod and a mounting sleeve fixedly mounted on the bottom end of the elastic telescopic rod. There are two elastic components, and both ends of the pressure roller are rotatably connected to the inside of the two mounting sleeves respectively.

[0013] Furthermore, movable openings are provided inside both sides of the mounting frame, and two elastic telescopic rods are respectively fixedly mounted on the inner top walls of the two movable openings, and both ends of the pressure roller pass through the movable openings.

[0014] Furthermore, a limiting assembly for guiding the mounting frame is fixedly mounted on the inner wall of the frame, and an abutment plate located on the inner side of the conveying device is fixedly mounted on the inner side of the frame.

[0015] Furthermore, a connecting elbow pipe connected to the cooling device is installed on the side wall of the frame, a scraper connected to the connecting elbow pipe is fixedly installed on the right end of the frame, and a plurality of equidistantly distributed spray holes are opened inside the scraper.

[0016] Compared with the prior art, the utility model provides a drying device for plastic film production, which has the following beneficial effects:

[0017] 1. The drying device for plastic film production uses a dynamic exhaust fan and a ventilation pipe to inhale gas, which is filtered by a filter plate, which is beneficial to filtering harmful gases generated by drying and at the same time ensuring the cleanliness of the air in the rack box, thereby achieving the advantages of strong practicality and being able to handle toxic gases generated during drying, and solving the problem that certain toxic gases are generated during material film drying, and these toxic gases are inconvenient to handle and will cause certain harm to the human body over time.

[0018] 2. The drying device for plastic film production drives the pressure roller downward through an electric push rod, and cooperates with a conveying device and an abutment plate to facilitate the fixation of the plastic film. The elastic and retractable installation can strengthen the extrusion of the plastic film, thereby better producing the plastic film. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the filter box of the utility model;

[0021] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure shown;

[0022] Figure 4 This is a cross-sectional view of the structure of the utility model;

[0023] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure of B shown.

[0024] In the figure: 1. frame; 2. conveying equipment; 3. drying equipment; 4. cooling equipment; 5. connecting elbow; 6. scraper; 7. spray hole; 8. filter box; 9. exhaust pipe; 10. exhaust fan; 11. filter plate; 12. ventilation pipe; 13. mounting seat; 14. fastening pin; 15. electric push rod; 16. mounting frame; 17. pressure roller; 18. movable opening; 19. elastic telescopic rod; 20. mounting sleeve; 21. limit assembly; 22. abutment plate. 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] See also Figure 1-5A drying device for plastic film production includes a frame 1, a conveying device 2 arranged on the frame 1, a drying device 3 and a cooling device 4, a connecting elbow 5 connected to the cooling device 4 is installed on the side wall of the frame 1, a scraper 6 connected to the connecting elbow 5 is fixedly installed on the right end of the frame 1, and a plurality of equidistantly distributed spray holes 7 are opened inside the scraper 6.

[0027] Among them, the conveying device 2 includes a servo motor, two conveying rollers and a transmission belt installed between the two conveying rollers. A cooling cabin is installed at the bottom of the cooling device 4. A connecting pipe is installed between the cooling device 4 and the cooling cabin. An angle is set between the scraper 6 and the frame 1, and the top of the scraper 6 is in contact with the outer surface of the conveyor belt. After cooling, the plastic film can follow the conveyor belt to the right end of the frame 1, at which time it will contact the outside of the scraper 6, and then separate from the conveyor belt under the action of the scraper 6, and move to the outside of the scraper 6. The top of the scraper 6 is provided with an inclined surface, and the inclined surface at the top of the scraper 6 can facilitate the scraper 6 to scrape the plastic film off the outside of the conveyor belt.

[0028] It should be noted that the conveying equipment 2, the drying equipment 3 and the cooling equipment 4 are all conventional technologies known to the public in the prior art, so their specific structural compositions and working principles will not be described in detail in this article.

[0029] In this embodiment, a filtering structure for filtering toxic gases is provided on the frame 1, and the filtering structure includes a filter box 8 fixedly mounted on the upper surface of the frame 1, an exhaust pipe 9 fixedly mounted on the upper surface of the filter box 8, an exhaust fan 10 fixedly mounted inside the exhaust pipe 9, a filter plate 11 detachably mounted inside the filter box 8, and a ventilation pipe 12 fixedly mounted on the lower surface of the filter box 8 and extending to the inside of the frame 1;

[0030] The exhaust pipe 9 is connected to the filter box 8, and the filter box 8 is located between the drying device 3 and the cooling device 4. Mounting seats 13 are fixedly installed between the inner walls of the opposite sides of the filter box 8, and the filter plate 11 is located between the two mounting seats 13. The mounting seats 13 are internally installed with fastening pins 14 for fixing the filter plate 11.

[0031] It should be noted that there are two filter plates 11, and the two filter plates 11 are arranged up and down, and there are several ventilation pipes 12. The two filter plates 11 are respectively a gas filter plate and an activated carbon filter plate. It is beneficial to filter the harmful gas generated by drying, and at the same time, it can ensure the cleanliness of the air in the rack 1.

[0032] In this embodiment, an extrusion structure for extruding a plastic film is provided on the frame 1; the extrusion structure includes an electric push rod 15 fixedly mounted on the inner top wall of the frame 9, a mounting frame 16 fixedly mounted on the output end of the electric push rod 15, a pressure roller 17 arranged on the mounting frame 16, and an elastic component.

[0033] The elastic component includes an elastic telescopic rod 19 and a mounting sleeve 20 fixedly mounted at the bottom end of the elastic telescopic rod 19 . There are two elastic components, and both ends of the pressure roller 17 are rotatably connected to the inside of the two mounting sleeves 20 .

[0034] In addition, movable openings 18 are provided inside both sides of the mounting frame 16 , and two elastic telescopic rods 19 are fixedly installed on the inner top walls of the two movable openings 18 , respectively. Both ends of the pressure roller 17 pass through the movable openings 18 .

[0035] In this embodiment, a limit assembly 21 for guiding the mounting frame 16 is fixedly mounted on the inner wall of the frame 1, and an abutment plate 22 located on the inner side of the conveying device 2 is fixedly mounted on the inner side of the frame 1. There are two limit assemblies 21, and the two limit assemblies 21 are symmetrically arranged to ensure that the mounting frame 16 can be lifted and lowered linearly.

[0036] The working principle of the above embodiment is:

[0037] The conveying device 2 is started to transport the plastic film above the conveyor belt, and the drying device 3 and the cooling device 4 are started at the same time. After the plastic film moves to the bottom of the drying device 3, it is dried under the action of the drying device 3. When it moves to the bottom of the cooling device 4, the cooling device 4 prepares cold air and evenly sprays the outside of the plastic film through the cooling cabin to reduce the external temperature of the plastic film. At the same time, the exhaust fan 10 is started, and the vent pipe 12 inhales gas, which is filtered by the filter plate 11, which is conducive to filtering the harmful gas generated by drying, and at the same time, the air in the frame 1 can be kept clean. Then the pressure roller 17 cooperates with the conveyor belt and the abutment plate 22 to squeeze and fix the plastic film. After cooling, the plastic film moves to the right end of the frame and contacts the outside of the scraper 6. It is separated from the conveyor belt under the action of the scraper 6 and moves to the outside of the scraper 6. At this time, the cooling device 2 injects a wind beam into the scraper through the connecting elbow 5, and the wind beam is sprayed through the spray hole 7 outside the scraper 6, so that a gap is generated between the plastic film and the scraper 6, completing the entire plastic film production process.

[0038] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the utility model is controlled by the controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power supply is also common knowledge in this field. The utility model is mainly used to protect mechanical devices, so the utility model will no longer explain the control method and circuit connection in detail.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drying device for plastic film production, comprising a frame (1), a conveying device (2) arranged on the frame (1), a drying device (3) and a cooling device (4), characterized in that: The frame (1) is provided with a filtering structure for filtering toxic gases, and the frame (1) is provided with an extrusion structure for extruding a plastic film; The filtering structure comprises a filter box (8) fixedly mounted on the upper surface of the frame (1), an exhaust pipe (9) fixedly mounted on the upper surface of the filter box (8), an exhaust fan (10) fixedly mounted inside the exhaust pipe (9), a filter plate (11) detachably mounted inside the filter box (8), and a ventilation pipe (12) fixedly mounted on the lower surface of the filter box (8) and extending to the inside of the frame (1); The extrusion structure comprises an electric push rod (15) fixedly mounted on the inner top wall of a frame (1), a mounting frame (16) fixedly mounted on the output end of the electric push rod (15), a pressing roller (17) arranged on the mounting frame (16), and an elastic component.

2. A drying device for plastic film production according to claim 1, characterized in that: The exhaust pipe (9) is in communication with the filter box (8), and the filter box (8) is located between the drying device (3) and the cooling device (4).

3. A drying device for plastic film production according to claim 1, characterized in that: Mounting seats (13) are fixedly mounted between the inner walls of opposite sides of the filter box (8), and the filter plate (11) is located between the two mounting seats (13). A fastening pin (14) for fixing the filter plate (11) is installed inside the mounting seat (13).

4. A drying device for plastic film production according to claim 1, characterized in that: The number of the filter plates (11) is two, and the two filter plates (11) are arranged up and down, and the number of the ventilation pipes (12) is a plurality.

5. A drying device for plastic film production according to claim 1, characterized in that: The elastic component comprises an elastic telescopic rod (19) and a mounting sleeve (20) fixedly mounted on the bottom end of the elastic telescopic rod (19). There are two elastic components, and the two ends of the pressure roller (17) are respectively rotatably connected to the inside of the two mounting sleeves (20).

6. A drying device for plastic film production according to claim 5, characterized in that: Both sides of the mounting frame (16) are provided with movable openings (18), and two elastic telescopic rods (19) are respectively fixedly mounted on the inner top walls of the two movable openings (18), and both ends of the pressing roller (17) pass through the movable openings (18).

7. A drying device for plastic film production according to claim 1, characterized in that: A limiting assembly (21) for guiding the mounting frame (16) is fixedly mounted on the inner wall of the frame (1), and an abutment plate (22) located on the inner side of the conveying device (2) is fixedly mounted on the inner side of the frame (1).

8. A drying device for plastic film production according to claim 1, characterized in that: A connecting elbow (5) connected to the cooling device (4) is installed on the side wall of the frame (1), and a scraper (6) connected to the connecting elbow (5) is fixedly installed on the right end of the frame (1), and a plurality of spray holes (7) distributed at equal distances are opened inside the scraper (6).

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