A method for processing disposable tableware based on biomass and a processing device thereof

Abstract

This invention relates to a biomass-based method and apparatus for processing disposable tableware, belonging to the field of disposable tableware processing technology. The processing method includes: crushing and drying biomass fibers, preparing biodegradable polymer resin adhesive, mixing and hot pressing molding. The processing apparatus includes a crushing and drying machine, an adhesive reaction vessel, a mixing mixer, a feeding device, and a hot pressing mold. The feeding device uses a multi-axis robotic arm to carry the feeding mechanism. Through the coordinated action of a U-shaped baffle, a feeding pipe, a vibrating rod, and an L-shaped scraper, the material is automatically filled, vibrated to compact, and vibrated to level. This invention has low cost, simple process, and low equipment investment, and can produce formaldehyde-free, biodegradable disposable tableware, suitable for large-scale promotion and application.

Description

Technical Field

[0001] This invention relates to the field of disposable tableware processing technology, and in particular to a biomass-based method and apparatus for processing disposable tableware. Background Technology

[0002] With economic and social development, disposable tableware such as takeout boxes, cups, and bowls have seen their application scope and usage increase year by year due to their advantages such as cleanliness, hygiene, quick and easy storage, labor savings, and avoidance of secondary washing. However, this has also led to a massive amount of plastic waste, resulting in increasing environmental pressure. Using biodegradable materials has become the preferred choice for disposable tableware, such as PLA, PBAT, and PHA derived from corn, but these are costly and difficult to promote and apply.

[0003] To reduce costs, the industry often uses the addition of biomass fiber pellets. However, this process requires specially designed screw-feed injection molding equipment, which has high energy consumption and excessive investment in production equipment, resulting in a still high overall cost. Furthermore, existing equipment has the following technical defects in the material filling process: Uneven filling: The mixture of biomass fiber and resin tends to accumulate in the mold and is difficult to distribute evenly, resulting in inconsistent wall thickness of tableware and affecting product quality; Residual air bubbles: Air bubbles are easily left in the material, which can form hollows after hot pressing, reducing the strength and service life of the tableware. Uneven surface: The surface of the filled material is uneven, requiring subsequent manual trimming, which is inefficient; Low level of automation: The processes of material filling, vibration, scraping and leveling rely heavily on manual operation, making it difficult to achieve continuous automated production. Summary of the Invention

[0004] The present invention addresses the problem of providing a biomass-based method and apparatus for processing disposable tableware, thereby solving the technical problems of high cost, uneven filling, residual air bubbles, and uneven surface in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A method for processing disposable tableware based on biomass includes the following steps: Step 1: Raw material pretreatment: Crush the biomass fiber into 5-20 mesh particles, dry to remove moisture, and obtain dry biomass fiber particles; Step 2: Adhesive preparation: Take 1 mol of polylactic acid with a molecular weight of 1000, 1 mol of polycaprolactone polyol with a molecular weight of 1000, 1 mol of glycerol, and 4 mol of isophorone diisocyanate, put them into a reaction vessel, and stir and react at 80°C in the absence of air for 3 hours to obtain a biodegradable polymer resin adhesive. Step 3: Mixing and molding: Mix the biomass fiber particles obtained in Step 1 with the biodegradable polymer resin adhesive obtained in Step 2 at a mass ratio of 3:7 to 6:4. Stir the mixture evenly, add it to the mold, heat and pressurize it at 140℃ for 3-5 minutes, demold it, and trim the edges to obtain the disposable tableware product.

[0007] Preferably, the biomass fiber in step one is one or a mixture of bamboo fiber, wood fiber, and straw fiber.

[0008] A biomass-based disposable tableware processing device, characterized in that it comprises: a pulverizing and drying machine, an adhesive reaction vessel, a mixing and stirring machine, a feeding device, and a hot pressing molding die. The feeding device includes a multi-axis robotic arm and a feeding mechanism installed at the execution end of the multi-axis robotic arm. The feeding mechanism includes a mounting frame connected to the execution end of the multi-axis robotic arm. A first electric slide rail is symmetrically and horizontally mounted on both sides inside the mounting frame. A U-shaped baffle is slidably mounted on the first electric slide rail. A second electric slide rail is horizontally mounted inside the U-shaped baffle and perpendicular to the first electric slide rail. A slide seat is slidably mounted on the second electric slide rail. A discharge pipe is mounted on the slide seat and connected to the bottom of the mixing and stirring machine through a conveying pipe. A side seat is provided on the side wall of the slide seat. A U-shaped lifting frame is slidably mounted on the side seat. A fixing ring is mounted on the U-shaped lifting frame. A vibrating rod is installed inside the fixing ring. The bottom of the middle section of the U-shaped baffle is provided with a material trough. The first vertical rail is symmetrically installed on the U-shaped baffle. A lifting frame is slidably installed on the first vertical rail. The lifting frame is connected to the L-shaped scraper through several polyurethane elastic columns. A vibration generator is installed on the L-shaped scraper. Connecting arms are installed on both sides of the end of the mounting frame, and a receiving box is installed at the bottom of the connecting arms.

[0009] Preferably, the inner wall width of the U-shaped baffle is the same as the cavity width of the lower mold, and the top side of the receiving box is flush with the top side of the lower mold.

[0010] Preferably, a motor is installed at the top of the side seat, and a threaded rod is installed inside the side seat at the output end of the motor. The threaded rod is threadedly connected to the U-shaped lifting frame, and a second vertical rail is provided on both sides of the side seat to slide and connect with the U-shaped lifting frame.

[0011] Preferably, the fixing ring cover is elastically connected to the built-in ring seat, and an installation ring seat is elastically installed inside the built-in ring seat, with the top end of the vibrator installed inside the installation ring seat.

[0012] Preferably, the top side of the built-in ring seat and the top side are connected to the top side and bottom side of the inner wall of the fixed ring cover through polyurethane elastic ring blocks. A convex ring is provided at the center of the outer side of the mounting ring seat. A ring groove is opened in the inner wall of the built-in ring seat. A number of end grooves are opened in a circular shape at equal angles on the outer side of the convex ring and the inner side of the ring groove. A number of spring ends are respectively installed in the end grooves.

[0013] Preferably, the U-shaped baffle is equipped with an mounting plate, the mounting plate is equipped with a pneumatic cylinder, and the telescopic end of the pneumatic cylinder is connected to the L-shaped scraper. The L-shaped scraper is equipped with a guide rod that passes through the lifting frame.

[0014] Preferably, the specific operating steps of the feeding device are as follows: A multi-axis robotic arm, carrying a feeding mechanism, moves it to above the lower mold of the mold to be filled. The robotic arm adjusts the posture and position of the feeding mechanism so that the U-shaped stop is aligned with the cavity of the lower mold. The U-shaped stop then descends and covers the cavity. A first electric slide rail moves the U-shaped stop to its starting position at one end of the cavity. The mixed biomass fiber pellets and biodegradable polymer resin mixture is injected into the mold through the feeding pipe. A second electric slide rail moves the slide block and feeding pipe from one side of the cavity to the other. The first electric slide rail moves the U-shaped stop from... The mold cavity moves at a constant speed from one end to the other. Simultaneously, the motor on the side seat starts, driving the threaded rod to rotate and causing the U-shaped lifting frame to descend along the second vertical rail. This allows the vibrating rod inside the fixed ring cover to insert into the already fed material. The top of the vibrating rod is installed inside the mounting ring seat, which is elastically connected to the inner ring seat via a spring. The inner ring seat is elastically connected to the fixed ring cover via a polyurethane elastic ring block, providing flexible cushioning for the vibrating rod during operation and preventing rigid collisions that could damage the mold. The high-frequency vibration of the vibrating rod causes the biomass fibers and tree fibers in the material to... The grease is thoroughly mixed, internal air bubbles are expelled, and the material is vibrated into the deep corners of the cavity. After the feed tube moves to the other end of the cavity to complete the feeding, the vibrator continues to vibrate for 2-3 seconds to ensure the material in that area is compacted. Then, the motor reverses, driving the U-shaped lifting frame to rise, and the vibrator retracts from the material. The pneumatic cylinder pushes the L-shaped scraper downward, so that the bottom surface of the L-shaped scraper contacts the material surface. The L-shaped scraper is connected to the lifting frame through polyurethane elastic columns, ensuring that the scraper fits tightly against the material surface and adapts to slight fluctuations in material thickness. The vibration generator starts, driving... The L-shaped scraper vibrates at high frequency, which enhances the surface fluidity of the material, reduces the frictional resistance between the scraper and the material, and prevents the material from accumulating in front of the L-shaped scraper. The first electric slide rail drives the U-shaped baffle and the L-shaped scraper to move from one end of the cavity to the other to scrape off the excess material. At the same time, the vibration makes the surface of the material smooth and fills the small depressions on the surface. The excess material in the mold is received by the receiving box. After the scraping is completed, the vibration generator stops, the pneumatic cylinder pulls the L-shaped scraper up and resets, and the multi-axis robotic arm carries the feeding mechanism to move out of the mold.

[0015] The beneficial effects of this invention are: The product is made of biomass fiber and biodegradable resin. Biomass fiber is widely available and inexpensive, which greatly reduces raw material costs and energy consumption. The hot pressing process replaces the injection molding process, which requires less equipment investment. Adhesives are prepared using biodegradable materials such as PLA and PCL. The finished tableware can be biodegraded in the natural environment, without plastic pollution problems. A multi-axis robotic arm carrying a feeding mechanism moves to the top of the mold. A U-shaped baffle aligns with the cavity and descends to cover it, preventing material spillage and ensuring accurate filling. The feeding tube moves along the width of the cavity under the drive of the second electric slide rail, while the U-shaped baffle moves along the length of the cavity under the drive of the first electric slide rail, achieving uniform spreading of the material in the cavity. The tamping rod is inserted into the material and vibrates at high frequency, so that the biomass fiber and resin are fully mixed, internal air bubbles are expelled, and the material is vibrated into the deep corners of the cavity, ensuring that the product is dense and free of voids. The tamping rod is connected by multiple elastic springs and polyurethane elastic rings, which provides flexible buffering during operation to avoid rigid collisions that could damage the mold. Driven by a vibration generator, the L-shaped scraper vibrates at high frequency, moving along the surface of the cavity to scrape off excess material. The vibration enhances the fluidity of the material surface, reduces scraper resistance, prevents material accumulation, and makes the surface smooth. The L-shaped scraper is connected to the lifting frame through polyurethane elastic columns, which can adapt to slight fluctuations in material thickness to ensure a smoothing effect. The scraped excess material is collected by the receiving box and can be recycled and reused, reducing waste. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first structure of the feeding mechanism of the present invention; Figure 2 This is a schematic diagram of the second structure of the feeding mechanism of the present invention; Figure 3 This is a schematic diagram of the vibratory rod installation structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the fixing ring cover of the present invention; Figure 5 This is a schematic diagram of the L-shaped scraper installation structure of the present invention; Figure 6 This is a schematic diagram of the feeding mechanism and the lower mold structure of the present invention.

[0017] Legend: 1. Mounting frame; 2. First electric slide rail; 3. U-shaped stop; 4. Second electric slide rail; 5. Slide seat; 6. Feed pipe; 7. Side seat; 8. U-shaped lifting frame; 9. Fixing ring cover; 10. Vibrator; 11. First vertical rail; 12. Lifting frame; 13. Polyurethane elastic column; 14. L-shaped scraper; 15. Vibration generator; 16. Connecting arm; 17. Receiving box; 18. Motor; 19. Threaded rod; 20. Second vertical rail; 21. Polyurethane elastic ring block; 22. Built-in ring seat; 23. Mounting ring seat; 24. End groove; 25. Spring; 26. Mounting plate; 27. Pneumatic cylinder. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Specific implementation examples are given below.

[0020] A method for processing disposable tableware based on biomass includes the following steps: Step 1: Raw material pretreatment: Crush the biomass fiber into 5-20 mesh particles, dry to remove moisture, and obtain dry biomass fiber particles. The biomass fiber is one or more of bamboo fiber, wood fiber, and straw fiber. Step 2: Adhesive preparation: Take 1 mol of polylactic acid with a molecular weight of 1000, 1 mol of polycaprolactone polyol with a molecular weight of 1000, 1 mol of glycerol, and 4 mol of isophorone diisocyanate (IPDI) and put them into a reaction vessel. Stir and react at 80°C in the absence of air for 3 hours to obtain a biodegradable polymer resin adhesive. Step 3: Mixing and molding: Mix the biomass fiber particles obtained in Step 1 with the biodegradable polymer resin adhesive obtained in Step 2 at a mass ratio of 3:7 to 6:4. Stir the mixture evenly, add it to the mold, heat and pressurize it at 140℃ for 3-5 minutes, demold it, and trim the edges to obtain the disposable tableware product.

[0021] The processing equipment includes: a pulverizer and dryer, an adhesive reaction vessel, a mixer, a feeding device, and a hot pressing mold.

[0022] See Figures 1-6The feeding device includes a multi-axis robotic arm and a feeding mechanism installed at the execution end of the multi-axis robotic arm. The feeding mechanism includes a mounting frame 1 connected to the execution end of the multi-axis robotic arm. A first electric slide rail 2 is symmetrically and horizontally mounted on both sides inside the mounting frame 1. A U-shaped baffle 3 is slidably mounted on the first electric slide rail 2. A second electric slide rail 4, perpendicular to the first electric slide rail 2, is horizontally mounted inside the U-shaped baffle 3. A slide seat 5 is slidably mounted on the second electric slide rail 4. A discharge pipe 6 is mounted on the slide seat 5 and connected to the bottom of the mixing mixer via a conveying pipe. The multi-axis robotic arm carries the feeding mechanism and moves it above the mold, allowing for flexible adjustment. The orientation and position are adapted to the filling requirements of molds of different specifications. The first electric slide rail 2 drives the U-shaped baffle 3 to move along the length of the cavity, and the second electric slide rail 4 drives the slide block 5 to move along the width of the cavity, so as to achieve full coverage of the feeding tube 6 in the entire cavity plane. The feeding tube 6 continuously feeds material as it moves with the slide block 5. Combined with the synchronous movement of the U-shaped baffle 3, the material is evenly spread in the cavity, avoiding local accumulation. A side seat 7 is provided on the side wall of the slide block 5. A U-shaped lifting frame 8 is slidably installed on the side seat 7. A motor 18 is installed at the top of the side seat 7. The output end of the motor 18 is located inside the side seat 7 and a threaded rod 19 is installed. The U-shaped lifting frame 8 is threadedly connected to the side seat 7. Second vertical rails 20 are slidably connected to the U-shaped lifting frame 8 on both sides. A fixing ring cover 9 is installed on the U-shaped lifting frame 8. A vibrator 10 is installed inside the fixing ring cover 9. The fixing ring cover 9 is elastically connected to the inner ring seat 22. An installation ring seat 23 is elastically installed inside the inner ring seat 22. The top of the vibrator 10 is installed inside the installation ring seat 23. The top and bottom sides of the inner ring seat 22 are connected to the top and bottom sides of the inner wall of the fixing ring cover 9 via polyurethane elastic ring blocks 21. A protruding ring is provided at the center of the outer side of the installation ring seat 23. An annular groove is formed on the inner wall of the inner ring seat 22. The outer side of the protruding ring and the inner side of the annular groove... The side is circumferentially shaped with several end slots 24 at equal angles. Several springs 25 are installed in the end slots 24 respectively. The motor 18 drives the threaded rod 19 to rotate, which drives the U-shaped lifting frame 8 to move up and down precisely along the second vertical rail 20, so as to achieve precise control of the insertion and withdrawal of the vibrating rod 10 into the material. The vibrating rod 10 is double elastically connected by the mounting ring seat 23, spring 25, built-in ring seat 22 and polyurethane elastic ring block 21. It has flexible buffer during operation to avoid rigid collision damage to the mold. The polyurethane elastic ring block 21 provides axial and radial buffer, and the spring 25 provides circumferential elasticity, which together absorb the impact and vibration during the vibration process. A material trough is provided at the bottom of the middle section of the U-shaped baffle 3. A first vertical rail 11 is symmetrically installed on the U-shaped baffle 3. A lifting frame 12 is slidably installed on the first vertical rail 11. The lifting frame 12 is connected to an L-shaped scraper 14 via several polyurethane elastic columns 13. A vibration generator 15 is installed on the L-shaped scraper 14. A mounting plate 26 is installed on the U-shaped baffle 3. A pneumatic cylinder 27 is installed on the mounting plate 26, and the telescopic end of the pneumatic cylinder 27 is connected to the L-shaped scraper 14. A through-lifting frame 1 is installed on the L-shaped scraper 14. The guide rod of 2, the L-shaped scraper 14 is elastically connected to the lifting frame 12 through the polyurethane elastic column 13, which can closely fit the material surface and adapt to the slight fluctuations in the material thickness to ensure the leveling effect. The vibration generator 15 drives the L-shaped scraper 14 to vibrate at high frequency, which enhances the surface fluidity of the material, reduces the frictional resistance between the L-shaped scraper 14 and the material, and prevents the material from accumulating in front of the L-shaped scraper 14. The pneumatic cylinder 27 drives the L-shaped scraper 14 to accurately lift and lower, realizing the entry and exit control of the L-shaped scraper 14. Connecting arms 16 are installed on both sides of the end of the mounting frame 1, and receiving boxes 17 are installed at the bottom of the connecting arms 16. Excess material scraped off is received by the receiving boxes 17 to prevent material from scattering and polluting the working environment.

[0023] The inner wall width of the U-shaped baffle 3 is the same as the cavity width of the lower mold. After the U-shaped baffle 3 is lowered to cover the cavity, it can prevent the material from overflowing the cavity during the filling process. The top side of the receiving box 17 is flush with the top side of the lower mold, ensuring that excess material slides smoothly into the receiving box 17 without any leakage.

[0024] Working principle of the feeding device: A multi-axis robotic arm carrying a feeding mechanism moves to above the lower mold of the mold to be filled. The robotic arm adjusts the posture and position of the feeding mechanism so that the U-shaped baffle 3 aligns with the cavity of the lower mold. The U-shaped baffle 3 then descends and covers the cavity. The first electric slide rail 2 moves the U-shaped baffle 3 to the starting position at one end of the cavity. The mixed biomass fiber pellets and biodegradable polymer resin mixture is injected into the mold through the feeding pipe 6. The second electric slide rail 4 moves the slide block 5 and the feeding pipe 6 from one side of the cavity to the other. The first electric slide rail 2 moves the U-shaped baffle 3 at a constant speed from one end of the cavity to... At the other end, as the feeding pipe 6 moves, the motor 18 on the side seat 7 starts, driving the threaded rod 19 to rotate, which in turn drives the U-shaped lifting frame 8 to descend along the second vertical rail 20, causing the vibrating rod 10 inside the fixed ring cover 9 to be inserted into the fed material. The top of the vibrating rod 10 is installed in the mounting ring seat 23, which is elastically connected to the inner ring seat 22 by a spring 25. The inner ring seat 22 is elastically connected to the fixed ring cover 9 by a polyurethane elastic ring block 21, giving the vibrating rod 10 a flexible buffer during operation to prevent rigid collisions from damaging the mold. The high-frequency vibration of the vibrating rod 10 causes the biomass fibers in the material to be... After thorough mixing with the resin to expel internal air bubbles, the material is vibrated into the deep corners of the cavity. Once the feed pipe 6 moves to the other end of the cavity and completes the feeding, the vibrator 10 continues to vibrate for 2-3 seconds to ensure the material in that area is compacted. Then, the motor 18 reverses, driving the U-shaped lifting frame 8 to rise, and the vibrator 10 withdraws from the material. The pneumatic cylinder 27 pushes the L-shaped scraper 14 downwards, causing the bottom surface of the L-shaped scraper 14 to contact the material surface. The L-shaped scraper 14 is connected to the lifting frame 12 via polyurethane elastic columns 13, ensuring the scraper closely adheres to the material surface and adapts to minor fluctuations in material thickness. The vibration generator 15... The L-shaped scraper 14 is started and driven to vibrate at high frequency. The vibration enhances the surface fluidity of the material, reduces the frictional resistance between the scraper and the material, and prevents the material from accumulating in front of the L-shaped scraper 14. The first electric slide rail 2 drives the U-shaped baffle 3 and the L-shaped scraper 14 to move from one end of the cavity to the other end to scrape off the excess material. At the same time, the vibration makes the surface of the material smooth and fills the small depressions on the surface. The excess material in the mold is received by the receiving box 17. After the scraping is completed, the vibration generator 15 stops, the pneumatic cylinder 27 pulls the L-shaped scraper 14 to rise and reset, and the multi-axis robotic arm carries the feeding mechanism to move out of the mold.

[0025] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for processing disposable tableware based on biomass, characterized in that, Includes the following steps: Step 1: Raw material pretreatment: Crush the biomass fiber into 5-20 mesh particles, dry to remove moisture, and obtain dry biomass fiber particles; Step 2: Adhesive preparation: Take 1 mol of polylactic acid with a molecular weight of 1000, 1 mol of polycaprolactone polyol with a molecular weight of 1000, 1 mol of glycerol, and 4 mol of isophorone diisocyanate, put them into a reaction vessel, and stir and react at 80°C in the absence of air for 3 hours to obtain a biodegradable polymer resin adhesive. Step 3: Mixing and molding: Mix the biomass fiber particles obtained in Step 1 with the biodegradable polymer resin adhesive obtained in Step 2 at a mass ratio of 3:7 to 6:

4. Stir the mixture evenly, add it to the mold, heat and pressurize it at 140℃ for 3-5 minutes, demold it, and trim the edges to obtain the disposable tableware product.

2. The method for processing disposable tableware based on biomass according to claim 1, characterized in that, The biomass fiber mentioned in step one is one or a mixture of bamboo fiber, wood fiber, and straw fiber.

3. A biomass-based single-use tableware processing apparatus for use in the processing method of claim 1, characterized by, include: Crushing and drying machine, adhesive reaction vessel, mixing and stirring machine, feeding device and hot pressing mold.

4. The biomass-based disposable tableware processing apparatus according to claim 3, wherein The feeding device includes a multi-axis robotic arm and a feeding mechanism installed at the execution end of the multi-axis robotic arm. The feeding mechanism includes a mounting frame (1) connected to the execution end of the multi-axis robotic arm. A first electric slide rail (2) is symmetrically and horizontally installed on both sides inside the mounting frame (1). A U-shaped baffle (3) is slidably installed on the first electric slide rail (2). A second electric slide rail (4) is horizontally installed inside the U-shaped baffle (3) and is perpendicular to the first electric slide rail (2). A slide seat (5) is slidably installed on the second electric slide rail (4). A discharge pipe (6) is installed on the slide seat (5), and the discharge pipe (6) is connected to the bottom of the mixing mixer through a conveying pipe. A side seat (7) is provided on the side wall of the slide seat (5). A U-shaped lifting frame (8) is slidably installed on the side seat (7). A fixing ring cover (9) is installed on the U-shaped lifting frame (8), and a vibrating rod (10) is installed inside the fixing ring cover (9). The U-shaped baffle (3) has a material trough at the bottom of the middle section. The U-shaped baffle (3) is symmetrically equipped with a first vertical rail (11). A lifting frame (12) is slidably installed on the first vertical rail (11). The lifting frame (12) is connected to an L-shaped scraper (14) through several polyurethane elastic columns (13). A vibration generator (15) is installed on the L-shaped scraper (14). The mounting frame (1) has connecting arms (16) installed on both sides of its end, and a receiving box (17) is installed at the bottom of the connecting arms (16).

5. A biomass-based disposable tableware processing apparatus according to claim 4, wherein The inner wall width of the U-shaped baffle (3) is the same as the cavity width of the lower mold, and the top side of the receiving box (17) is flush with the top side of the lower mold.

6. A biomass-based disposable tableware processing apparatus according to claim 5, wherein A motor (18) is installed at the top of the side seat (7). The output end of the motor (18) is located inside the side seat (7) and a threaded rod (19) is installed. The threaded rod (19) is threadedly connected to the U-shaped lifting frame (8). A second vertical rail (20) is provided on both sides of the side seat (7) and is slidably connected to the U-shaped lifting frame (8).

7. A biomass-based disposable tableware processing apparatus according to claim 6, wherein The fixed ring cover (9) is elastically connected to the built-in ring seat (22), and the built-in ring seat (22) is elastically installed with an installation ring seat (23), and the top of the vibrating rod (10) is installed in the installation ring seat (23).

8. A biomass-based disposable tableware processing apparatus according to claim 7, wherein The top side of the built-in ring seat (22) and the top side are connected to the top side and bottom side of the inner wall of the fixed ring cover (9) through polyurethane elastic ring block (21). A convex ring is provided at the center of the outer side of the mounting ring seat (23). A ring groove is opened in the inner wall of the built-in ring seat (22). A number of end grooves (24) are opened in a circular shape at equal angles on the outer side of the convex ring and the inner side of the ring groove. The ends of a number of springs (25) are respectively installed in the end grooves (24).

9. The biomass-based disposable tableware processing apparatus according to claim 8, wherein, The U-shaped baffle (3) is equipped with an mounting plate (26), and the mounting plate (26) is equipped with a pneumatic cylinder (27). The telescopic end of the pneumatic cylinder (27) is connected to the L-shaped scraper (14), and the L-shaped scraper (14) is equipped with a guide rod that passes through the lifting frame (12).

10. The biomass-based disposable tableware processing apparatus according to claim 9, wherein The specific operating steps of the feeding device are as follows: A multi-axis robotic arm carrying a feeding mechanism moves to the top of the lower mold of the mold to be filled. The multi-axis robotic arm adjusts the posture and position of the feeding mechanism so that the U-shaped baffle (3) aligns with the cavity of the lower mold. The U-shaped baffle (3) descends and covers the cavity of the lower mold. The first electric slide rail (2) drives the U-shaped baffle (3) to move to the starting position at one end of the cavity. The mixed biomass fiber particles and biodegradable polymer resin mixture is injected into the mold through the feeding pipe (6). The second electric slide rail (4) drives the slide block (5) and the feeding pipe (6) to move from one side of the cavity to the other. The first electric slide rail (2) drives the U-shaped baffle (3) to move at a constant speed from one end of the cavity to the other. As the feeding pipe (6) moves, the motor (18) on the side seat (7) starts, driving the threaded rod (19) to rotate, which in turn drives the U-shaped lifting frame (8) to descend along the second vertical rail (20), so that the vibrating rod (10) inside the fixed ring cover (9) is inserted into the fed material. The top of the vibrating rod (10) is installed in the mounting ring seat (23). The mounting ring seat (23) is elastically connected to the inner ring seat (22) through the spring (25). The inner ring seat (22) is elastically connected to the fixed ring cover (9) through the polyurethane elastic ring block (21), so that the vibrating rod (10) has flexible buffer during operation to avoid rigid collision damage to the mold. The high-frequency vibration of the vibrating rod (10) makes the material... The biomass fibers and resin are fully mixed, internal air bubbles are expelled, and the material is vibrated into the deep corner of the cavity. After the feed pipe (6) moves to the other end of the cavity to complete the feeding, the vibrating rod (10) continues to vibrate for 2-3 seconds to ensure that the material in this area is compacted. Then the motor (18) reverses and drives the U-shaped lifting frame (8) to rise, the vibrating rod (10) withdraws from the material, and the pneumatic cylinder (27) pushes the L-shaped scraper (14) to descend, so that the bottom surface of the L-shaped scraper (14) contacts the material surface. The L-shaped scraper (14) is connected to the lifting frame (12) through the polyurethane elastic column (13), so that the scraper fits tightly against the material surface and adapts to the slight fluctuations in the material thickness. The generator (15) is started, driving the L-shaped scraper (14) to vibrate at high frequency. The vibration enhances the surface fluidity of the material, reduces the frictional resistance between the scraper and the material, and prevents the material from accumulating in front of the L-shaped scraper (14). The first electric slide rail (2) drives the U-shaped baffle (3) and the L-shaped scraper (14) to move from one end of the cavity to the other end, scraping off the excess material. At the same time, the vibration makes the surface of the material smooth and fills the small depressions on the surface. The excess material in the mold is received by the receiving box (17). After the scraping is completed, the vibration generator (15) stops, the pneumatic cylinder (27) pulls the L-shaped scraper (14) to rise and reset, and the multi-axis robotic arm carries the feeding mechanism to move out of the mold.

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