Air drying device for PLA sheet production

Abstract

The utility model discloses an air-drying device for PLA sheet production, which comprises a base and a rolling frame, the rolling frame is arranged at the top of the base, the top of the rolling frame is connected with an air-drying box, the right side of the air-drying box is connected with a blowing box, the air-drying box is internally provided with a feeding port, the feeding port penetrates through the upper side and the lower side of the air-drying box, and the blowing box is connected with the air-drying box. Connecting blocks are symmetrically arranged on the rear side of the top of the air drying box, a first guide roller is connected between the connecting blocks through bearings, air blowing hopper covers are connected in series for use through air conveying pipes, the use power consumption and the manufacturing cost of the whole device can be effectively reduced, the whole structure is operated and machined in a vertical mode, and the machining efficiency is improved. According to the PLA sheet air-drying device, the occupied area of the whole device is greatly reduced, PLA sheets output from the bottom of the air-drying box can be wound in time, the situation that dust or moisture in air adheres to the surfaces of the PLA sheets due to the fact that the PLA sheets are conveyed for a long time and make contact with the outside space is avoided, and the air-drying quality is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PLA sheet production, in particular to an air drying device for PLA sheet production. Background Art

[0002] At present, polylactic acid is abbreviated as PLA, also known as polylactide. It uses corn, wheat, cassava and other starch-containing organisms as the initial raw materials. Glucose is obtained through enzymatic decomposition, and then fermented by soft acid bacteria to become lactic acid. Finally, biodegradable thermoplastic polyester is obtained through chemical combination. Polylactic acid has good biocompatibility, environmental safety, non-toxicity, good mechanical properties and optical transparency, and good processing performance. It can be used for various packaging materials such as ground films, food packaging bags, and medicines.

[0003] In the prior art, application number 202122627178.7 discloses an air-drying device for the production of PLA environmentally friendly film, including an air-drying box; fixed wheels are installed on the upper left, middle and right sides of the air-drying box, and brackets are installed on the inner walls on both sides of the air-drying box, and a motor is installed on the bottom of the inner side of the bracket, and a screw is installed on the top of the motor for transmission, and a slider is movably installed in the bracket, and a screw hole is opened through the slider, and the screw rod passes through the screw hole; the above-mentioned device is used in a horizontal box body, which is too large and greatly occupies the space of the production workshop. The arrangement of multiple fans will greatly increase the power consumption of the overall device, and the above-mentioned device does not have a special winding mechanism. After air-drying is completed, it directly contacts with the outside air, causing dust or moisture in the air to adhere to the surface of the PLA sheet, greatly affecting the air-drying effect.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes an air-drying device for PLA sheet production to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A drying device for PLA sheet production comprises a base and a winding frame, wherein the winding frame is arranged on the top of the base, the top of the winding frame is connected to a drying box, the right side of the drying box is connected to a blow box, a feed port is arranged inside the drying box, the feed port runs through the upper and lower sides of the drying box, connecting blocks are symmetrically arranged on the rear side of the top of the drying box, a first guide roller is connected between the connecting blocks through a bearing, a second guide roller is connected between the inner walls of the top of the feed port through a bearing, a material guide plate is embedded and fixed on the rear side of the inner wall of the feed port, and a winding drum is arranged inside the winding frame.

[0008] Preferably, the hair dryer box comprises an air supply pipe and a hair dryer cover, both ends of the air supply pipe are respectively fixedly connected to the hair dryer cover, and an air inlet pipe is fixedly connected to the right side of the upper shrink hair dryer cover.

[0009] Preferably, the blowing hopper covers all penetrate the interior of the air drying box, the rear side of the blowing hopper covers extends into the interior of the feed port and is flush with the front side of the inner wall of the feed port, and an air distribution plate is fixedly connected to the inner cavity of the blowing hopper covers.

[0010] Preferably, a mounting groove is dug on the front side of the guide plate, rollers are equidistantly connected between the inner walls of the mounting groove through bearings, and side blocks are equidistantly connected to the left side of the front of the guide plate, and the side blocks are fixedly connected to the left side of the inner wall of the feed port.

[0011] Preferably, the inner side of the side block is connected to an L-shaped support rod through a torsion spring, the middle right side of the L-shaped support rod is connected to a pressure roller through a bearing, the lower right side of the L-shaped support rod is fixedly connected to a pressure plate, the upper and lower parts of the pressure plate are respectively fixedly connected to scrapers, and the pressure roller and the inner side of the pressure plate are movably fitted with the front side of the roller.

[0012] Preferably, the winding rack includes a fixed plate and a movable plate, the fixed plate is arranged on the left side of the movable plate, and the bottom side of the fixed plate is fixedly connected to the left edge of the top of the base, the top of the fixed plate is fixedly connected to the left edge of the bottom of the air drying box, and the left side of the fixed plate is fixedly connected to a servo motor.

[0013] Preferably, the inner side of the movable plate is connected to a rotating shaft through a bearing, the output shaft of the servo motor passes through the inner side of the fixed plate, and the outer end of the output shaft and the outer end of the rotating shaft are respectively fixedly connected with a sleeve, and limiting protrusions are equidistantly connected on the outer wall of the sleeve, and the sleeves extend into the inner cavity of the winding drum respectively.

[0014] Preferably, limiting grooves are dug at equal intervals on the inner wall of the winding drum, and the sleeves are movably engaged with the limiting grooves through limiting protrusions. A notch is dug at the inner bottom of the movable plate, and a connecting plate is movably engaged through the notch. The connecting plate is fixedly connected to the right edge of the top of the base, and threaded holes are provided on the connecting plate and the inner wall of the notch.

[0015] The beneficial effects of the utility model are as follows: the blow hoods are used in series through the air delivery pipe, which can effectively reduce the power consumption and manufacturing cost of the overall device; the upper scraper can scrape off water stains and dust on the surface of the PLA sheet, and the lower scraper can level the PLA sheet to avoid wrinkles on the PLA sheet during the feeding process; and the overall structure is operated and processed in a vertical manner, which greatly reduces the footprint of the overall device, and can promptly reel in the PLA sheet output from the bottom of the air drying box to avoid long-term transportation of the PLA sheet in contact with the external space, causing dust or moisture in the air to adhere to the surface of the PLA sheet, thereby effectively improving the air drying quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of an air-drying device for PLA sheet production according to an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a blow box of an air drying device for PLA sheet production according to an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the appearance structure of a guide plate of an air-drying device for PLA sheet production according to an embodiment of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the disassembled structure of a winding frame of an air-drying device for PLA sheet production according to an embodiment of the utility model.

[0021] In the figure:

[0022] 1. Base; 2. Winding rack; 3. Air drying box; 4. Blowing box; 5. Feeding port; 6. Connecting block; 7. First guide roller; 8. Second guide roller; 9. Guide plate; 10. Winding drum; 11. Air duct; 12. Blowing hood; 13. Air inlet duct; 14. Air distribution plate; 15. Mounting groove; 16. Support roller; 17. Side block; 18. L-shaped support rod; 19. Pressing roller; 20. Pressing plate; 21. Fixed plate; 22. Movable plate; 23. Servo motor; 24. Rotating shaft; 25. Sleeve; 26. Limiting protrusion; 27. Notch; 28. Connecting plate; 29. ​​Threaded hole. DETAILED DESCRIPTION

[0023] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] According to an embodiment of the utility model, an air-drying device for producing PLA sheets is provided.

[0025] Embodiment 1

[0026] like Figure 1-4 As shown, according to an embodiment of the utility model, an air-drying device for PLA sheet production comprises a base 1 and a winding frame 2. The winding frame 2 is arranged on the top of the base 1. A drying box 3 is connected to the top of the winding frame 2. A blowing box 4 is connected to the right side of the drying box 3. A feeding port 5 is arranged inside the drying box 3. The feeding port 5 runs through the upper and lower sides of the drying box 3. Connecting blocks 6 are symmetrically arranged on the rear side of the top of the drying box 3. A first guide roller 7 is connected between the connecting blocks 6 through a bearing. A second guide roller 8 is connected between the inner walls of the top of the feeding port 5 through a bearing. A material guide plate 9 is embedded and fixed on the rear side of the inner wall of the feeding port 5. A winding drum 10 is arranged inside the winding frame 2. The blowing box 4 comprises an air duct 11 and a blowing hopper cover 12. Both ends of the air duct 11 are respectively connected and fixedly connected with the blowing hopper cover 12. Then, an air inlet pipe 13 is fixedly connected to the right side of the upper shrink blowing hopper hood 12, and the blowing hopper hoods 12 all pass through the interior of the air drying box 3. The rear side of the blowing hopper hood 12 extends into the interior of the feed port 5 and is flush with the front side of the inner wall of the feed port 5. An air equalizing plate 14 is fixedly connected to the inner cavity of the blowing hopper hood 12, and the air inlet pipe 13 is connected to the output end of the external hot air blower equipment. Through the air supply pipe 11, air can be supplied to the upper and lower blowing hopper hoods 12 at the same time. Under the action of the air equalizing plate 14, the hot air blown into the interior of the feed port 5 can be evenly discharged, and a corresponding number of fans are fixedly installed at different points for use. The blowing hopper hoods 12 are used in series through the air supply pipe 11, which can effectively reduce the power consumption and manufacturing cost of the overall device.

[0027] Embodiment 2

[0028] like Figure 1-4As shown, according to an embodiment of the utility model, a drying device for PLA sheet production includes a base 1 and a winding frame 2. The winding frame 2 is arranged on the top of the base 1. The top of the winding frame 2 is connected to a drying box 3. The right side of the drying box 3 is connected to a blowing box 4. A feed port 5 is arranged inside the drying box 3. The feed port 5 runs through the upper and lower sides of the drying box 3. Connecting blocks 6 are symmetrically arranged on the rear side of the top of the drying box 3. A first guide roller 7 is connected between the connecting blocks 6 through a bearing. A bearing passes through the inner wall of the top of the feed port 5. A second guide roller 8 is connected, a guide plate 9 is embedded and fixed on the rear side of the inner wall of the feed opening 5, a winding drum 10 is arranged inside the winding frame 2, a mounting groove 15 is dug on the front side of the guide plate 9, and rollers 16 are equidistantly connected between the inner walls of the mounting grooves 15 through bearings, and a side block 17 is equidistantly connected to the left side of the front of the guide plate 9, and the side block 17 is fixedly connected to the left side of the inner wall of the feed opening 5, and an L-shaped support rod 18 is connected to the inner side of the side block 17 through a torsion spring, and the middle of the right side of the L-shaped support rod 18 is connected to the bearing A pressure roller 19 is connected, and a pressure plate 20 is fixedly connected to the lower right side of the L-shaped support rod 18. Scrapers are fixedly connected to the upper and lower sides of the pressure plate 20 respectively. The inner sides of the pressure roller 19 and the pressure plate 20 are movably fitted with the front side of the roller 16. The processed PLA sheets are overlapped on the outer walls of the first guide roller 7 and the second guide roller 8 respectively, and then enter the inside of the feed port 5. Then, the input PLA sheets are fitted on the outer side of the roller 16 for transportation through the pressure roller 19 and the pressure plate 20. The L-shaped support rod 18 is connected to the side block 17 through a torsion spring. During the feeding process of the PLA sheet, the pressure roller 19 and the pressure plate 20 can be well fitted on the outer wall of the PAL sheet, and the pressure plate 20 is respectively provided with scrapers. The upper scraper can scrape off water stains and dust on the surface of the PLA sheet, and the lower scraper can level the PLA sheet to avoid wrinkles of the PLA sheet during the feeding process. The overall structure is operated and processed in a vertical manner, which greatly reduces the footprint of the overall device.

[0029] Embodiment 3

[0030] like Figure 1-4As shown, according to an embodiment of the utility model, a drying device for PLA sheet production includes a base 1 and a winding frame 2. The winding frame 2 is arranged on the top of the base 1. The top of the winding frame 2 is connected to a drying box 3. The right side of the drying box 3 is connected to a blowing box 4. A feeding port 5 is arranged inside the drying box 3. The feeding port 5 runs through the upper and lower sides of the drying box 3. Connecting blocks 6 are symmetrically arranged on the rear side of the top of the drying box 3. A first guide roller 7 is connected between the connecting blocks 6 through a bearing. A second guide roller 8 is connected between the inner walls of the top of the feeding port 5 through a bearing. A material guide plate 9 is embedded and fixed on the rear side of the inner wall of the feeding port 5. A winding drum 10 is arranged inside the winding frame 2. The winding frame 2 includes a fixed The fixed plate 21 is arranged on the left side of the movable plate 22, and the bottom side of the fixed plate 21 is fixedly connected to the left edge of the top of the base 1, the top of the fixed plate 21 is fixedly connected to the left edge of the bottom of the air drying box 3, and the left side of the fixed plate 21 is fixedly connected with a servo motor 23, the inner side of the movable plate 22 is connected with a rotating shaft 24 through a bearing, the output shaft of the servo motor 23 passes through the inner side of the fixed plate 21, and the outer end of the output shaft and the outer end of the rotating shaft 24 are respectively fixedly connected with a sleeve 25, and the outer wall of the sleeve 25 is equidistantly connected with a limiting protrusion 26, and the sleeves 25 extend into the inner cavity of the winding drum 10 respectively, and the inner wall of the winding drum 10 is dug with limiting grooves at equal distances. 25 are movably engaged with the limiting grooves through the limiting protrusions 26, a notch 27 is dug at the inner bottom of the movable plate 22, and a connecting plate 28 is movably engaged through the notch 27, the connecting plate 28 is fixedly connected to the right edge of the top of the base 1, and threaded holes 29 are penetrated on the inner walls of the connecting plate 28 and the notch 27, the PLA sheet output through the air drying box 3 can be wound on the outer wall of the winding drum 10, after the air drying and winding are completed, the bolts in the threaded holes 29 on the connecting plate 28 can be screwed and removed, so that the movable plate 22 is separated from the connecting plate 28 through the notch 27, and the sleeve 25 on the outer wall of the rotating shaft 24 inside the movable plate 22 is pulled out of the inner cavity of the winding drum 10 The winding drum 10 is then pulled out so that the left end of the winding drum 10 is pulled out from the sleeve 25 on the outer wall of the output shaft of the servo motor 23. Similarly, during installation and use, the limiting protrusion 26 on the outer wall of the sleeve 25 is embedded in the limiting groove on the inner wall of the winding drum 10. The servo motor 23 is started to drive the sleeve 25 to rotate, so that the rotating winding drum 10 can roll up the PLA sheet, and the PLA sheet output from the bottom of the air-drying box 3 can be rolled up in time, so as to avoid long-term transportation of the PLA sheet to contact the external space, causing dust or moisture in the air to adhere to the surface of the PLA sheet, thereby effectively improving the air-drying quality.

[0031] In summary, with the aid of the above technical solution of the utility model, when the device is in use, the air inlet pipe 13 is connected to the output end of the external hot air blower device, and the upper and lower blowing hoods 12 can be supplied with air through the air delivery pipe 11. Under the action of the air distribution plate 14, the hot air blown into the feed port 5 can be evenly discharged. The processed PLA sheets are overlapped on the outer walls of the first guide roller 7 and the second guide roller 8, respectively, and then enter the feed port 5. Then, the input PLA sheets are attached to the outer side of the roller 16 for transportation through the pressure roller 19 and the pressure plate 20. The L-shaped support rod 18 is connected to the side block 17 through a torsion spring. In the process of feeding the PLA sheets, the pressure roller 19 and the pressure plate 20 can be well attached to the outer wall of the PAL sheet, and the pressure plate 20 is respectively provided with a pressure roller 19 and a pressure plate 20. There are scrapers. The upper scraper can scrape off water stains and dust on the surface of the PLA sheet, and the lower scraper can level the PLA sheet. When installed and used, the limiting protrusion 26 on the outer wall of the sleeve 25 is embedded in the limiting groove on the inner wall of the winding drum 10, and the servo motor 23 is started to drive the sleeve 25 to rotate, so that the rotating winding drum 10 can wind up the PLA sheet. After air drying and winding, the bolts in the threaded holes 29 on the connecting plate 28 can be screwed and removed, so that the movable plate 22 is separated from the connecting plate 28 through the notch 27, so that the sleeve 25 on the outer wall of the rotating shaft 24 inside the movable plate 22 is pulled out of the inner cavity of the winding drum 10, and then the winding drum 10 is pulled out, so that the left end of the winding drum 10 is pulled out from the sleeve 25 on the outer wall of the output shaft of the servo motor 23.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PLA sheet air drying device for production, comprising a base (1) and a winding frame (2), characterized in that: The winding frame (2) is arranged on the top of the base (1), and the top of the winding frame (2) is connected to an air drying box (3), and the right side of the air drying box (3) is connected to a blow box (4). A feed port (5) is provided inside the air drying box (3), and the feed port (5) runs through the upper and lower sides of the air drying box (3). Connecting blocks (6) are symmetrically provided on the rear side of the top of the air drying box (3), and a first guide roller (7) is connected between the connecting blocks (6) through bearings. A second guide roller (8) is connected between the inner walls of the top of the feed port (5) through bearings. A material guide plate (9) is embedded and fixed on the rear side of the inner wall of the feed port (5), and a winding drum (10) is provided inside the winding frame (2).

2. The air drying device for PLA sheet production according to claim 1, characterized in that: The blowing box (4) comprises an air supply pipe (11) and a blowing hopper cover (12). The two ends of the air supply pipe (11) are respectively connected to the blowing hopper cover (12) through a fixed connection, and an air inlet pipe (13) is connected to the right side of the shrinkable blowing hopper cover (12) through a fixed connection.

3. The air drying device for PLA sheet production according to claim 2, characterized in that: The blowing hopper covers (12) all penetrate the interior of the air drying box (3), the rear side of the blowing hopper covers (12) extends into the interior of the feed port (5) and is flush with the front side of the inner wall of the feed port (5), and an air distribution plate (14) is fixedly connected to the inner cavity of the blowing hopper covers (12).

4. The air drying device for PLA sheet production according to claim 3, characterized in that: The front side of the guide plate (9) is provided with a mounting groove (15), and rollers (16) are equidistantly connected between the inner walls of the mounting groove (15) via bearings. A side stopper (17) is equidistantly connected to the left side of the front of the guide plate (9), and the side stopper (17) is fixedly connected to the left side of the inner wall of the feed port (5).

5. The air drying device for PLA sheet production according to claim 4, characterized in that: The inner side of the side stopper (17) is connected to an L-shaped support rod (18) via a torsion spring, the middle part of the right side of the L-shaped support rod (18) is connected to a pressure roller (19) via a bearing, the lower right side of the L-shaped support rod (18) is fixedly connected to a pressure plate (20), the upper and lower parts of the pressure plate (20) are respectively fixedly connected to scrapers, and the inner sides of the pressure roller (19) and the pressure plate (20) are movably fitted with the front side of the roller (16).

6. The air drying device for PLA sheet production according to claim 5, characterized in that: The winding frame (2) comprises a fixed plate (21) and a movable plate (22); the fixed plate (21) is arranged on the left side of the movable plate (22); the bottom side of the fixed plate (21) is fixedly connected to the left edge of the top of the base (1); the top of the fixed plate (21) is fixedly connected to the left edge of the bottom of the air drying box (3); and the left side of the fixed plate (21) is fixedly connected to a servo motor (23).

7. The air drying device for PLA sheet production according to claim 6, characterized in that: The inner side of the movable plate (22) is connected to a rotating shaft (24) via a bearing, the output shaft of the servo motor (23) passes through the inner side of the fixed plate (21), and the outer ends of the output shaft and the rotating shaft (24) are respectively fixedly connected with sleeves (25), the outer walls of the sleeves (25) are equidistantly connected with limiting protrusions (26), and the sleeves (25) respectively extend into the inner cavity of the winding drum (10).

8. The air drying device for PLA sheet production according to claim 7, characterized in that: The inner wall of the winding drum (10) is dug with limiting grooves at equal intervals, and the sleeves (25) are movably engaged with the limiting grooves through limiting protrusions (26). A notch (27) is dug at the inner bottom of the movable plate (22), and a connecting plate (28) is movably engaged through the notch (27). The connecting plate (28) is fixedly connected to the right edge of the top of the base (1), and threaded holes (29) are both provided on the inner wall of the connecting plate (28) and the notch (27).

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