Drying device for packaging film

Abstract

The utility model provides a drying device for a packaging film, and relates to the technical field of packaging film production and processing. The drying device for the packaging film comprises a box body, a feeding port, a discharging port, a roller set, a roller shaft, the packaging film, an air blowing groove, a hot air groove, a nozzle, a round rod, a gear, a transmission frame, a transmission end, a limiting ring, a rack, a fixing plate, a kidney-shaped hole, a mounting plate, a motor, a fixing disc, an eccentric rod, a cold air device, a hot air device, an air outlet channel and a folding pipe. According to the device, moisture on the packaging film can be blown away from the packaging film as much as possible, the moisture content of the middle portion and the edge side of the packaging film is reduced, after the packaging film is dried, the number of impurities left on the middle portion and the edge side of the packaging film due to moisture evaporation is greatly reduced, and through the subsequent trimming process, the packaging film can be effectively removed. The number of impurities left on the packaging film is smaller, and the product quality of the packaging film can be improved.

Description

Technical Field

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

[0002] During the production process of packaging film, after the raw materials are extruded into film, a cooling process is required. Existing cooling methods include running water cooling and roller cooling. Running water cooling has high cooling efficiency, but requires post-drying, while roller cooling does not require post-drying, but has relatively low cooling efficiency. In the process of drying the packaging film, the packaging film is usually passed through a box with a high temperature, and the box continuously generates hot air to evaporate the moisture on the packaging film. When the existing drying device is in use, as the moisture evaporates, impurities contained in the water are easily left on the packaging film, which has a great impact on the quality of the packaging film. Utility Model Content

[0003] The utility model aims to provide a drying device for packaging film, aiming to solve the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the drying device for packaging film comprises a box body, wherein two ends of the box body are respectively provided with an inlet and an outlet, two groups of roller groups are arranged inside the box body, each roller group comprises two roller shafts arranged up and down, and the packaging film is located between the two roller shafts, and the upper and lower surfaces of the box body are both provided with blowing grooves and hot air grooves, and the shortest distance between the blowing groove and the box body inlet is greater than the shortest distance between the hot air groove and the box body inlet, and nozzles that can swing back and forth are arranged inside the blowing groove and the hot air groove, and the two nozzles located on the same side of the box body are connected by a round rod, and the nozzle rotates coaxially with the round rod, and a gear is arranged on the round rod, and a transmission frame is also included, and the transmission frame has two transmission ends, and the two transmission ends of the transmission frame are respectively positioned at The transmission frame is located on both sides of the box body and is slidably connected with the box body. A limiting ring is provided on the outer surface of the box body, and the transmission end of the transmission frame is located in the limiting ring. Racks matching with gears are respectively provided at both ends of the transmission frame. The middle part of the transmission frame is located on one side of the box body. A fixing plate is provided on one side of the middle part of the transmission frame, and a waist hole is opened on the fixing plate. A mounting plate is provided on one side of the box body, and a motor is provided on the mounting plate. A fixing disk is provided at the output end of the motor, and an eccentric rod matching with the waist hole is provided on the fixing disk. A cold air device and a hot air device are provided on the other side of the box body. The cold air device and the hot air device both have two air outlet channels, and the air outlet channel of the cold air device and the nozzle in the blowing slot are connected as well as the air outlet channel of the hot air device and the nozzle in the hot air slot by a folding tube.

[0005] Preferably, the outer surfaces of the blowing slot and the hot air slot are both covered with protective covers, the round rod passes through the protective covers, and the protective covers are provided with through slots for the folding tube to pass through.

[0006] Preferably, the blowing slot and the hot air slot are both arranged in the middle of the box body, and the nozzles are respectively arranged in the middle of the blowing slot and the hot air slot.

[0007] Preferably, a support plate is provided on the lower surface of the mounting plate.

[0008] Preferably, the shortest distances between the packaging film and the nozzles on both sides of the box body are equal.

[0009] The beneficial effects of the utility model are:

[0010] The device can blow off as much moisture as possible from the packaging film and reduce the moisture content in the middle and edge sides of the packaging film. After the packaging film is dried, the amount of impurities remaining in the middle and edge sides of the packaging film due to moisture evaporation is greatly reduced. Through the subsequent trimming process, the amount of impurities remaining on the packaging film is even smaller, which helps to improve the product quality of the packaging film. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0012] Figure 2 It is a top view of a specific embodiment of the utility model.

[0013] Figure 3 It is a side view of a specific implementation of the utility model.

[0014] Figure 4 It is a schematic diagram of the positions of the blowing slots and the hot air slots in a specific embodiment of the utility model.

[0015] Figure 5 It is a schematic diagram of the structure inside the box of a specific embodiment of the utility model.

[0016] In the figure: 1. box body; 2. feed inlet; 3. discharge outlet; 4. roller; 5. packaging film; 6. blowing slot; 7. hot air slot; 8. nozzle; 9. round rod; 10. gear; 11. transmission frame; 12. limit ring; 13. rack; 14. fixing plate; 15. waist hole; 16. mounting plate; 17. motor; 18. fixing plate; 19. eccentric rod; 20. cold air device; 21. hot air device; 22. air outlet channel; 23. folding tube; 24. protective cover; 25. support plate. DETAILED DESCRIPTION

[0017] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0018] like Figure 1-5 As shown, a drying device for packaging film comprises a box body 1, wherein both ends of the box body 1 are respectively provided with a feeding port 2 and a discharging port 3, two groups of roller groups are arranged inside the box body 1, each roller group comprises two roller shafts 4 arranged up and down, a packaging film 5 is located between the two roller shafts 4, and the upper surface and the lower surface of the box body 1 are both provided with a blowing slot 6 and a hot air slot 7, the shortest distance between the blowing slot 6 and the feeding port 2 of the box body 1 is greater than the shortest distance between the hot air slot 7 and the feeding port 2 of the box body 1, a nozzle 8 which can swing back and forth is arranged inside the blowing slot 6 and the hot air slot 7, the two nozzles 8 located on the same side of the box body 1 are connected by a round rod 9, the nozzle 8 rotates coaxially with the round rod 9, a gear 10 is arranged on the round rod 9, and a transmission frame 11 is also included, the transmission frame 11 has two transmission ends, the two transmission ends of the transmission frame 11 are respectively located on both sides of the box body 1 and are slidably connected to the box body 1, and the outer surface of the box body 1 A limit ring 12 is arranged on the surface, the transmission end of the transmission frame 11 is located in the limit ring 12, racks 13 matching with the gear 10 are arranged at both ends of the transmission frame 11, the middle part of the transmission frame 11 is located on one side of the box body 1, a fixing plate 14 is arranged on one side of the middle part of the transmission frame 11, a waist hole 15 is opened on the fixing plate 14, a mounting plate 16 is arranged on one side of the box body 1, a motor 17 is arranged on the mounting plate 16, a fixing disk 18 is arranged at the output end of the motor 17, an eccentric rod 19 matching with the waist hole 15 is arranged on the fixing disk 18, a cold air device 20 and a hot air device 21 are arranged on the other side of the box body 1, the cold air device 20 and the hot air device 21 both have two air outlet channels 22, the air outlet channel 22 of the cold air device 20 and the nozzle 8 in the blowing slot 6, the air outlet channel 22 of the hot air device 21 and the nozzle 8 in the hot air slot 7 are connected by a folding tube 23.

[0019] The extruded packaging film 5 enters the interior of the box body 1 from the feed port 2 of the box body 1 and moves out of the box body 1 through the discharge port 3. During the movement of the packaging film 5 inside the box body 1, the packaging film 5 is limited by the rollers 4 in the two roller groups so that the packaging film 5 can pass through the box body 1 stably.

[0020] The nozzle 8 can make reciprocating swinging motion in the blowing slot 6 and the hot air slot 7 in the box body 1. Specifically, by controlling the rotation of the motor 17, the output end of the motor 17 drives the fixed disk 18 to rotate, and the fixed disk 18 drives the eccentric rod 19 to rotate. The eccentric rod 19 cooperates with the waist hole 15 on the fixed plate 14, thereby driving the transmission frame 11 to reciprocate on the outer surface of the box body 1, and the transmission frame 11 drives the rack 13 to reciprocate. Through the external meshing of the rack 13 and the gear 10, the nozzle 8 is driven to reciprocate.

[0021] The normal temperature gas blown out by the cold air device 20 is blown toward the packaging film 5 through the nozzle 8 in the blowing slot 6, and the higher temperature gas blown out by the hot air device 21 is blown toward the packaging film 5 through the nozzle 8 in the hot air slot 7. After entering the interior of the box body 1, the packaging film 5 first passes through the nozzle 8 that can blow out normal temperature gas, and then passes through the nozzle 8 that can blow out higher temperature gas. The nozzle 8 that blows out normal temperature gas can blow a small amount of moisture on the upper surface and the lower surface of the packaging film 5 to both sides of the packaging film 5 through its reciprocating swing, and part of the moisture directly drips into the interior of the box body 1. After being sprayed by the first nozzle 8, the moisture content on the packaging film 5 is greatly reduced, and at the same time, the moisture on the packaging film 5 is concentrated on the edge side of the packaging film 5. The nozzle 8 is a nozzle 8 that sprays out normal temperature gas. The temperature of the sprayed gas is at normal temperature, so very little water on the packaging film 5 evaporates. When the packaging film 5 passes through the second nozzle 8, the sprayed gas with a higher temperature can quickly evaporate the residual water on the packaging film 5, thereby drying the packaging film 5. Since there is less water in the middle of the packaging film 5, very few impurities are left after the water evaporates, which will not affect the quality of the packaging film 5. The water on the edge side of the packaging film 5 is relatively more, but the total amount of impurities is still small. In the subsequent processing, the packaging film 5 needs to be trimmed so that the edge side of the packaging film 5 can be trimmed off, so that there are very few impurities remaining on the trimmed packaging film 5, which is beneficial to improving the product quality of the packaging film 5.

[0022] Furthermore, the outer surfaces of the blowing slot 6 and the hot air slot 7 are covered with a protective cover 24, the round rod 9 passes through the protective cover 24, and the protective cover 24 is provided with a through groove for the folding tube 23 to pass through. The protective cover 24 is used to reduce the loss of hot air in the box body 1, and can also prevent debris from entering the interior of the box body 1 through the blowing slot 6 and the hot air slot 7.

[0023] Furthermore, the blowing slot 6 and the hot air slot 7 are both arranged in the middle position of the box body 1, and the nozzle 8 is respectively arranged in the middle position of the blowing slot 6 and the hot air slot 7, so that the nozzle 8 can evenly spray to the outer surface of the packaging film 5 during the reciprocating swing process, preventing only one side of the packaging film 5 from being effectively processed.

[0024] Furthermore, a support plate 25 is provided on the lower surface of the mounting plate 16 , and the support plate 25 is used to improve the stability of the motor 17 on the mounting plate 16 .

[0025] Furthermore, the shortest distances between the packaging film 5 and the nozzles 8 on both sides of the box body 1 are equal, so that the nozzles 8 can process the upper and lower sides of the packaging film 5 with approximately the same efficiency, preventing only one side of the packaging film 5 from being effectively processed.

[0026] The device can blow off as much moisture as possible from the packaging film 5, and reduce the moisture content in the middle and edge of the packaging film 5. After the packaging film 5 is dried, the amount of impurities remaining in the middle and edge of the packaging film 5 due to evaporation of moisture is greatly reduced, and through the subsequent trimming process, the amount of impurities remaining on the packaging film 5 is even smaller, which helps to improve the product quality of the packaging film 5.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A drying device for packaging film, characterized in that: The invention comprises a box body (1), wherein the two ends of the box body (1) are respectively provided with a material inlet (2) and a material outlet (3), the box body (1) is provided with two roller groups inside, each roller group comprises two roller shafts (4) arranged one above the other, and a packaging film (5) is located between the two roller shafts (4), and the upper surface and the lower surface of the box body (1) are both provided with a blowing groove (6) and a hot air groove (7), the shortest distance between the blowing groove (6) and the material inlet (2) of the box body (1) is greater than the shortest distance between the hot air groove (7) and the material inlet (2) of the box body (1), and the blowing groove ( 6) and the hot air slot (7) are both provided with nozzles (8) that can swing back and forth, and the two nozzles (8) located on the same side of the box (1) are connected by a round rod (9), and the nozzle (8) and the round rod (9) rotate coaxially, and the round rod (9) is provided with a gear (10), and also includes a transmission frame (11), and the transmission frame (11) has two transmission ends, and the two transmission ends of the transmission frame (11) are respectively located on both sides of the box (1) and are slidably connected to the box (1), and the outer surface of the box (1) is provided with a limit ring (12) The transmission end of the transmission frame (11) is located in a limiting ring (12), racks (13) matching the gear (10) are respectively arranged at both ends of the transmission frame (11), the middle of the transmission frame (11) is located on one side of the box body (1), a fixing plate (14) is arranged on one side of the middle of the transmission frame (11), a waist hole (15) is opened on the fixing plate (14), a mounting plate (16) is arranged on one side of the box body (1), a motor (17) is arranged on the mounting plate (16), and the output end of the motor (17) is arranged A fixed plate (18) is provided, and an eccentric rod (19) matched with the waist hole (15) is provided on the fixed plate (18). A cold air device (20) and a hot air device (21) are provided on the other side of the box body (1). The cold air device (20) and the hot air device (21) each have two air outlet channels (22). The air outlet channel (22) of the cold air device (20) and the nozzle (8) in the blowing slot (6), and the air outlet channel (22) of the hot air device (21) and the nozzle (8) in the hot air slot (7) are both connected via a folding tube (23).

2. The drying device for packaging film according to claim 1, characterized in that: The outer surfaces of the blowing slot (6) and the hot air slot (7) are both covered with a protective cover (24), the round rod (9) passes through the protective cover (24), and the protective cover (24) is provided with a through slot for the folding tube (23) to pass through.

3. The drying device for packaging film according to claim 1, characterized in that: The blowing slot (6) and the hot air slot (7) are both arranged in the middle of the box body (1), and the nozzle (8) is respectively arranged in the middle of the blowing slot (6) and the hot air slot (7).

4. The drying device for packaging film according to claim 1, characterized in that: A support plate (25) is provided on the lower surface of the mounting plate (16).

5. The drying device for packaging film according to any one of claims 1 to 4, characterized in that: The shortest distances between the packaging film and the nozzles (8) on both sides of the box body (1) are equal.

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