A foaming device for processing a polylactic acid material article

Abstract

The utility model discloses a kind of foaming devices for processing polylactic acid material product, more specifically in the polylactic acid material product processing technical field, including workbench, the top of workbench is fixedly arranged with fixed cylinder, the top of fixed cylinder is throughly arranged with inlet frame, the inside of fixed cylinder is provided with stirring mechanism, stirring mechanism includes motor fixedly installed in the top of fixed cylinder, the output of motor is fixedly arranged with shaft, the surface of shaft is fixedly arranged with stirring blade, the surface of shaft is fixedly arranged with support frame, the side of support frame is fixedly arranged with scraper, the inner wall of support frame is rotatably arranged with connecting cylinder, the surface of connecting cylinder is fixedly arranged with multiple stirring rods.The utility model realizes the multi-angle quick mixing of raw materials, and support frame drives scraper to remove the raw materials adhered to the inner wall of fixed cylinder, reduces waste and guarantees mixing uniformity, secondly realizes raw material uniform feeding, avoids accumulation and blockage.

Description

Technical Field

[0001] This utility model relates to the field of polylactic acid material product processing technology, and more specifically, to a foaming device for processing polylactic acid material products. Background Technology

[0002] Polylactic acid (PLA) is a novel, environmentally friendly, and high-performance polymer material with significant advantages over traditional petroleum-based polymers. It is completely biodegradable, with the final degradation products being carbon dioxide, water, and small organic molecules, which will not cause environmental pollution. The foaming process is crucial in the processing of PLA products. However, existing methods for mixing multiple foaming materials simply involve rotating a motor to drive a mixing base inside the base to achieve thorough mixing. A single mixing base requires a significant amount of rotation time to ensure adequate mixing, which in turn affects the subsequent foaming efficiency.

[0003] A search revealed that Chinese patent CN213500419U discloses a foaming device for processing polylactic acid (PLA) materials. This device features a mixing tank with a first and a second follower rod mounted on the bottom and center of the sealing cap via bearings. The surfaces of the two follower rods are respectively equipped with a first and a second rotating plate. Driven by first and second rotating motors, the follower rods rotate automatically, causing the connected first and second stirring rods to rotate within the tank, mixing the added foaming material. The two sets of stirring rods are staggered, expanding the mixing range during rotation and ensuring thorough mixing of the material. Connecting plates are installed at the four corners of the mixing tank. The sealing cap has first and second connecting screw holes corresponding to the connecting plates. By inserting or removing the connecting bolts from the screw holes, the sealing cap can be stably installed and sealed on the top of the mixing tank, or the tank top can be easily opened to quickly pour in a large amount of foaming material for subsequent mixing.

[0004] However, in actual use, the polylactic acid raw material itself has a certain viscosity. During the stirring process, it is easy to adhere to the inner wall of the mixing tank due to centrifugal force and its own viscosity. These adhered raw materials cannot participate in the subsequent stirring, mixing and foaming reaction, which not only wastes raw materials and increases production costs, but also forms residual accumulation in the tank, affecting the quality stability of the foamed products. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a foaming device for processing polylactic acid material products, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A foaming device for processing polylactic acid (PLA) material products includes a worktable, a fixed cylinder fixedly installed on the top of the worktable, a feed frame extending through the top of the fixed cylinder, and a stirring mechanism installed inside the fixed cylinder. The stirring mechanism includes a motor fixedly installed on the top of the fixed cylinder. A rotating shaft is fixedly installed at the output end of the motor. Stirring blades are fixedly installed on the surface of the rotating shaft. A support frame is fixedly installed on the surface of the rotating shaft. A scraper is fixedly installed on one side of the support frame. A connecting cylinder is rotatably installed on the inner wall of the support frame. Multiple stirring rods are fixedly installed on the surface of the connecting cylinder. A support bar is rotatably installed at one end of the rotating shaft. Both ends of the support bar are fixedly connected to the inner wall of the fixed cylinder.

[0007] By adopting the above technical solution: the support frame drives the scraper to scrape off the raw materials adhering to the inner wall of the fixed cylinder, reducing waste and ensuring uniform mixing. The multi-angle stirring of the connecting cylinder and the stirring rod further improves the foaming uniformity, and also improves the foaming quality of polylactic acid materials and the reliability of the equipment operation.

[0008] As a further description of the above technical solution: the fixed cylinder is provided with a feeding mechanism, the feeding mechanism includes a stepper motor fixedly installed on one side of the feeding frame, the output end of the stepper motor is fixedly provided with a rotating rod, one end of the rotating rod passes through the feeding frame and is rotatably connected to the inner wall of the feeding frame, and a sealing leaf is fixedly provided on the surface of the rotating rod, the sealing leaf cooperating with the inner wall of the feeding frame; The top of the feeding frame is provided with a feeding hopper, the top of the feeding hopper is hinged with a sealing cover, and the top of the sealing cover is fixedly provided with a handle.

[0009] By adopting the above technical solution, the raw materials are fed at a uniform speed, avoiding accumulation and blockage. Moreover, the sealing cover at the top of the feed hopper can be easily opened and closed with a handle, which effectively ensures the sealing of the feeding process, prevents impurities from mixing in or the raw materials from getting damp, improves the stability of feeding and the convenience of operation, and provides a uniform material basis for the subsequent mixing and foaming process.

[0010] As a further description of the above technical solution: a connecting frame is fixedly provided on one side of the sealing cover, and a connecting block is fixedly provided on one side of the feed hopper, and a slot is provided on the surface of the connecting block; Both the connecting block and the slot are fitted with fixing blocks, and a fixing rod is fixedly installed on one side of the fixing block. A throttle handle is fixedly installed at one end of the fixing rod. The bottom of the workbench is fixedly provided with multiple support legs, and the bottom of the support legs is fixedly provided with casters. A discharge frame is provided through the bottom of the workbench, and a valve is fixedly provided on one side of the discharge frame.

[0011] By adopting the above technical solutions, the sealing cap can be quickly fixed and unlocked, enhancing the sealing performance and improving operational efficiency. In addition, the casters at the bottom of the support legs facilitate flexible movement and position adjustment of the equipment. The setting of the discharge frame and valve enables controllable discharge of foamed products, thus optimizing the practicality and ease of operation of the equipment.

[0012] The technical effects and advantages of this utility model are as follows: By incorporating a stirring mechanism, compared to existing technologies, the rotating shaft driven by a motor rotates, causing the surface stirring blades to initially stir the polylactic acid raw material, achieving rapid mixing of the raw material and laying a uniform material foundation for subsequent foaming. Secondly, as the support frame on the rotating shaft rotates, the scraper on one side scrapes against the inner wall of the fixed cylinder, effectively avoiding waste caused by the raw material adhering to the inner wall, while ensuring the consistency of heating and mixing of the raw material throughout the cylinder. Furthermore, the connecting cylinder on the inner wall of the support frame drives multiple stirring rods to move synchronously, forming multi-angle stirring, which greatly improves the uniformity of raw material stirring and ensures stable foaming effect. In addition, the rotating shaft is connected to the inner wall of the fixed cylinder through support bars, enhancing the stability during rotation, reducing equipment operating noise and wear, and extending the service life of the equipment. By setting up a feeding mechanism, compared with existing technologies, the combination of a rotary handle, a fixed rod, and a fixed block enables rapid and tight fixing of the sealing cover to the feeding hopper. The precise docking of the connecting frame and the connecting block ensures the sealing of the feeding process, effectively preventing the raw materials from getting damp or impurities from entering, thus ensuring the purity of the raw materials. Secondly, the stepper motor drives the rotary rod to rotate, and the sealing blade on the surface of the rotary rod cooperates with the inner wall of the feeding frame, which can uniformly control the speed at which the raw materials enter the fixed cylinder, avoiding the problem of raw materials accumulating and blocking the feeding channel, and ensuring the continuity and stability of feeding. This controllable feeding method also allows the raw materials to be better connected with the subsequent mixing stage, laying the foundation for improving foaming quality and significantly improving the ease of operation and reliability of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall rear view structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the overall side cross-sectional structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the stirring mechanism of this utility model.

[0017] Figure 5 This is a schematic diagram of the feeding mechanism of this utility model.

[0018] The attached diagram is labeled as follows: 1. Workbench; 2. Fixed cylinder; 3. Feed frame; 4. Motor; 5. Rotating shaft; 6. Stirring blade; 7. Support frame; 8. Scraper; 9. Connecting cylinder; 10. Stirring rod; 11. Support bar; 12. Stepper motor; 13. Rotating rod; 14. Sealing blade; 15. Feed hopper; 16. Sealing cover; 17. Handle; 18. Connecting frame; 19. Connecting block; 20. Slot; 21. Fixed block; 22. Fixed rod; 23. Rotary handle; 24. Support leg; 25. Caster wheel; 26. Discharge frame. Detailed Implementation

[0019] 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.

[0020] The embodiments disclosed in this application are as follows: Figure 1-5 The foaming device shown is for processing polylactic acid material products, including a workbench 1, a fixed cylinder 2 fixedly installed on the top of the workbench 1, a feed frame 3 through the top of the fixed cylinder 2, and a stirring mechanism installed inside the fixed cylinder 2. The stirring mechanism includes a motor 4 fixedly installed on the top of the fixed cylinder 2. A rotating shaft 5 is fixedly installed at the output end of the motor 4. A stirring blade 6 is fixedly installed on the surface of the rotating shaft 5. A support frame 7 is fixedly installed on the surface of the rotating shaft 5. A scraper 8 is fixedly installed on one side of the support frame 7. A connecting cylinder 9 is rotatably installed on the inner wall of the support frame 7. A plurality of stirring rods 10 are fixedly installed on the surface of the connecting cylinder 9. A support bar 11 is rotatably installed at one end of the rotating shaft 5. Both ends of the support bar 11 are fixedly connected to the inner wall of the fixed cylinder 2. The stepper motor 12 of the feeding mechanism is started, and the stepper motor 12 drives the rotating rod 13 to rotate. The sealing leaf 14 on the surface of the rotating rod 13 rotates with the rotating rod 13. Through the cooperation between the sealing leaf 14 and the inner wall of the feeding frame 3, the speed at which the raw material enters the fixed cylinder 2 is evenly controlled to avoid the accumulation and blockage of raw material. Next, the motor 4 at the top of the fixed cylinder 2 is turned on. The output end of the motor 4 drives the rotating shaft 5 to rotate inside the fixed cylinder 2. The stirring blades 6 on the surface of the rotating shaft 5 rotate with the rotating shaft 5 to perform preliminary stirring and mixing of the polylactic acid raw material entering the fixed cylinder 2. Furthermore, the support frame 7 on the surface of the rotating shaft 5 rotates with the rotating shaft 5, and the scraper 8 on one side of the support frame 7 scrapes against the inner wall of the fixed cylinder 2 to prevent the raw materials from sticking to the inner wall. At the same time, the connecting cylinder 9 on the inner wall of the support frame 7 drives multiple stirring rods 10 on the surface to move synchronously during rotation, stirring the raw materials at multiple angles and improving the foaming uniformity. One end of the rotating shaft 5 is connected to the inner wall of the fixed cylinder 2 through the support strip 11 to ensure the stable rotation of the rotating shaft 5.

[0021] Reference Figure 3 , 5 As shown, the fixed cylinder 2 is equipped with a feeding mechanism. The feeding mechanism includes a stepper motor 12 fixedly installed on one side of the feeding frame 3. A rotating rod 13 is fixedly installed at the output end of the stepper motor 12. One end of the rotating rod 13 passes through the feeding frame 3 and is rotatably connected to the inner wall of the feeding frame 3. A sealing leaf 14 is fixedly installed on the surface of the rotating rod 13. The sealing leaf 14 cooperates with the inner wall of the feeding frame 3. A feeding hopper 15 is provided through the top of the feeding frame 3, and a sealing cover 16 is hinged to the top of the feeding hopper 15. A handle 17 is fixedly provided on the top of the sealing cover 16. The operator holds handle 17 and flips it upward to open the sealing cover 16, which is hinged to the top of the feed hopper 15. The polylactic acid raw material and foaming agent are poured into the feed hopper 15 in proportion. Then, the sealing cover 16 is closed, so that the connecting frame 18 is aligned with the connecting block 19. The fixing block 21 is inserted into the slot 20. By turning the handle 23, the fixing rod 22 is rotated, thereby rotating the fixing block 21 to be offset from the slot 20, thus completing the fixation and ensuring the sealing of the feeding process.

[0022] Reference Figure 3-5 As shown, a connecting frame 18 is fixedly provided on one side of the sealing cover 16, and a connecting block 19 is fixedly provided on one side of the feed hopper 15. A slot 20 is provided on the surface of the connecting block 19. Both the connecting block 19 and the slot 20 are fitted with fixing blocks 21. A fixing rod 22 is fixedly installed on one side of the fixing block 21, and a handle 23 is fixedly installed at one end of the fixing rod 22. The bottom of the workbench 1 is fixedly provided with multiple support legs 24, the bottom of the support legs 24 is fixedly provided with casters 25, the bottom of the workbench 1 is provided with a discharge frame 26, and a valve is fixedly provided on one side of the discharge frame 26. The operator holds the handle 23 and rotates it, which in turn drives the fixing rod 22 and the fixing block 21 to rotate, so that the fixing block 21 is aligned with the connecting block 19 and the slot 20. Then, the operator pulls the handle 23 upward, thereby driving the handle 23 and the fixing block 21 to be removed from the slot 20 and the connecting frame 18. Then, the operator holds handle 17 and flips it upward to open the sealing cover 16, which is hinged to the top of hopper 15. The polylactic acid raw material and foaming agent are poured into hopper 15 in proportion. Then, the sealing cover 16 is closed, so that the connecting frame 18 is aligned with the connecting block 19. The fixing block 21 is inserted into the slot 20. By turning the handle 23, the fixing rod 22 is rotated, thereby rotating the fixing block 21 to be offset in the slot 20, thus completing the fixing and ensuring the sealing of the feeding process. After the raw material has fully foamed in the fixed cylinder 2, open the valve on one side of the discharge frame 26, and the foamed polylactic acid product is discharged from the bottom of the workbench 1 through the discharge frame 26; If you need to change the working position, release the brake of the caster 25, push the worktable 1, move the device to the target position through the caster 25 at the bottom of the support leg 24, and then fix the caster 25 again.

[0023] Working principle of this utility model: This utility model is a foaming device for processing polylactic acid material products. When using the device, the operator holds the handle 23 and rotates it, which in turn drives the fixing rod 22 and the fixing block 21 to rotate, so that the fixing block 21 is aligned with the connecting block 19 and the slot 20. Then, the operator pulls the handle 23 upward, thereby driving the handle 23 and the fixing block 21 to be taken out from the slot 20 and the connecting frame 18. Then, the operator holds handle 17 and flips it upward to open the sealing cover 16, which is hinged to the top of hopper 15. The polylactic acid raw material and foaming agent are poured into hopper 15 in proportion. Then, the sealing cover 16 is closed, so that the connecting frame 18 is aligned with the connecting block 19. The fixing block 21 is inserted into the slot 20. By turning the handle 23, the fixing rod 22 is rotated, thereby rotating the fixing block 21 to be offset in the slot 20, thus completing the fixing and ensuring the sealing of the feeding process. At the same time, the stepper motor 12 of the feeding mechanism is started, and the stepper motor 12 drives the rotating rod 13 to rotate. The sealing leaf 14 on the surface of the rotating rod 13 rotates with the rotating rod 13. Through the cooperation between the sealing leaf 14 and the inner wall of the feeding frame 3, the speed at which the raw material enters the fixed cylinder 2 is evenly controlled to avoid the accumulation and blockage of raw material. Next, the motor 4 at the top of the fixed cylinder 2 is turned on. The output end of the motor 4 drives the rotating shaft 5 to rotate inside the fixed cylinder 2. The stirring blades 6 on the surface of the rotating shaft 5 rotate with the rotating shaft 5 to perform preliminary stirring and mixing of the polylactic acid raw material entering the fixed cylinder 2. Furthermore, the support frame 7 on the surface of the rotating shaft 5 rotates with the rotating shaft 5, and the scraper 8 on one side of the support frame 7 scrapes against the inner wall of the fixed cylinder 2 to prevent the raw materials from sticking to the inner wall. At the same time, the connecting cylinder 9 on the inner wall of the support frame 7 drives multiple stirring rods 10 on the surface to move synchronously during the rotation, and stirs the raw materials from multiple angles to improve the foaming uniformity. One end of the rotating shaft 5 is connected to the inner wall of the fixed cylinder 2 through the support strip 11 to ensure the stable rotation of the rotating shaft 5. After the raw material has fully foamed in the fixed cylinder 2, open the valve on one side of the discharge frame 26, and the foamed polylactic acid product is discharged from the bottom of the workbench 1 through the discharge frame 26; If you need to change the working position, release the brake of the caster 25, push the worktable 1, move the device to the target position through the caster 25 at the bottom of the support leg 24, and then fix the caster 25 again.

[0024] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foaming apparatus for processing polylactic acid (PLA) material products, comprising a workbench (1), characterized in that: A fixed cylinder (2) is fixedly installed on the top of the workbench (1), and a feed frame (3) is provided through the top of the fixed cylinder (2). A stirring mechanism is provided inside the fixed cylinder (2). The stirring mechanism includes a motor (4) fixedly installed on the top of the fixed cylinder (2). A rotating shaft (5) is fixedly installed at the output end of the motor (4). A stirring blade (6) is fixedly installed on the surface of the rotating shaft (5). A support frame (7) is fixedly installed on the surface of the rotating shaft (5). A scraper (8) is fixedly installed on one side of the support frame (7). A connecting cylinder (9) is rotatably installed on the inner wall of the support frame (7). A plurality of stirring rods (10) are fixedly installed on the surface of the connecting cylinder (9). A support bar (11) is rotatably installed at one end of the rotating shaft (5). Both ends of the support bar (11) are fixedly connected to the inner wall of the fixed cylinder (2).

2. The foaming device for processing polylactic acid material products according to claim 1, characterized in that: The fixed cylinder (2) is provided with a feeding mechanism. The feeding mechanism includes a stepper motor (12) fixedly installed on one side of the feeding frame (3). A rotating rod (13) is fixedly installed at the output end of the stepper motor (12). One end of the rotating rod (13) passes through the feeding frame (3) and is rotatably connected to the inner wall of the feeding frame (3). A sealing leaf (14) is fixedly installed on the surface of the rotating rod (13). The sealing leaf (14) cooperates with the inner wall of the feeding frame (3).

3. The foaming device for processing polylactic acid material products according to claim 1, characterized in that: The top of the feed frame (3) is provided with a feed hopper (15), the top of the feed hopper (15) is hinged with a sealing cover (16), and the top of the sealing cover (16) is fixedly provided with a handle (17).

4. A foaming device for processing polylactic acid material products according to claim 3, characterized in that: A connecting frame (18) is fixedly provided on one side of the sealing cover (16), and a connecting block (19) is fixedly provided on one side of the feed hopper (15). A slot (20) is provided on the surface of the connecting block (19).

5. A foaming device for processing polylactic acid material products according to claim 4, characterized in that: Both the connecting block (19) and the slot (20) are fitted with fixing blocks (21), and a fixing rod (22) is fixedly installed on one side of the fixing block (21). A throttle (23) is fixedly installed at one end of the fixing rod (22).

6. A foaming device for processing polylactic acid material products according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly provided with multiple support legs (24), the bottom of the support legs (24) is fixedly provided with casters (25), the bottom of the workbench (1) is provided with a discharge frame (26), and a valve is fixedly provided on one side of the discharge frame (26).

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