Raw material conveying and overturning mechanism for production of degradable packaging container

Abstract

This invention relates to the field of raw material conveying technology and discloses a reversible raw material conveying mechanism for the production of biodegradable packaging containers. The mechanism includes a ring conveyor table, a raw material extrusion device and a reversible conveying mechanism fixedly installed above the ring conveyor table, and a hot pressing device disposed below the reversible conveying mechanism. Multiple bearing plates are slidably connected to the top of the ring conveyor table. A central groove is formed on the inner wall of each bearing plate, and a material-bearing cylinder is slidably connected to the inner wall of the central groove. Through the reversible conveying mechanism, a rotating wheel drives a reversible belt to rotate under the drive of a servo motor. A clamping frame is installed on the matrix plate on the outer wall of the reversible belt. The clamping frame, in turn, clamps the material-bearing cylinder through a limiting block and a limiting groove. When the material-bearing cylinder moves to the reversible conveying mechanism under the drive of the bearing plates, it can be lifted and reversible with the reversible belt. This solves the drawbacks of low efficiency, poor accuracy, and safety hazards associated with manual operation.

Description

Technical Field

[0001] This invention relates to the field of raw material conveying technology, and in particular to a reversible raw material conveying mechanism for the production of biodegradable packaging containers. Background Technology

[0002] With environmental awareness growing, the market demand for biodegradable packaging containers is increasing. Raw material transport and molding are crucial steps in their production. Currently, the most common method of raw material transport relies on conveyor belts. However, existing conveyor belt systems have significant drawbacks; they cannot tumble the raw materials on the belt, making it difficult to accurately and evenly feed them into the hot press mold. This results in uneven distribution of the raw materials within the mold, leading to poor molding quality of the biodegradable packaging containers, with inconsistent thickness and strength. This not only reduces production efficiency but also increases the defect rate, significantly hindering the high-quality, large-scale production of biodegradable packaging containers.

[0003] Patent CN119928168A discloses a raw material conveying device for plastic container production, which is equipped with a crushing mechanism and a dual-purpose channel. It can not only crush defective parts to improve resource utilization efficiency, but also feed plastic raw materials into the dual-purpose channel. It is flexible in use. The crushing mechanism crushes the defective parts twice, which can fully crush the defective parts. Then, through the preliminary heating function formed by the airflow mechanism and the drying and rolling function of the pretreatment mechanism, the residual heat when the mold is opened is utilized to reduce the power consumption of the injection unit for heating and melting. This not only effectively achieves the purpose of energy saving, but also makes the crushed plastic fragments easier to be processed by the injection unit of the injection molding machine. It effectively solves the problem of the inability to process defective parts produced in existing factories, resulting in resource waste.

[0004] The existing technology has the following drawbacks: The inability to flip the raw materials on the conveyor belt and feed them into the hot press mold is a major problem. Existing conveyor mechanisms lack a flipping function, and the conveyor belt operates in a single mode, making it difficult to apply a flipping force to the raw materials, preventing them from smoothly flipping into the hot press mold. Currently, this problem is often solved manually, but manual operation has many drawbacks. First, it is inefficient; the operating speed cannot keep up with the pace of large-scale production, greatly limiting overall production efficiency. Second, it lacks precision; it is difficult for humans to ensure consistent angles and forces for each flip, resulting in uneven distribution of raw materials within the mold and affecting the molding quality of the packaging containers. Third, it poses safety hazards; the hot press mold has a high temperature, and manual operation can easily lead to burns and other accidents. Furthermore, prolonged manual operation can cause employee fatigue and increases labor costs and management difficulty.

[0005] Unsustainable production flow: The existing conveying mechanism, which transports raw materials to the hot pressing device mold one by one, has serious drawbacks. This results in an extremely slow conveying pace, with the hot pressing device frequently waiting for raw materials, causing overall production to be discontinuous. On the one hand, this greatly reduces production efficiency, prolongs product production cycles, increases energy consumption and equipment wear, and fails to meet the demands of large-scale orders. On the other hand, frequent start-ups and shutdowns of the hot pressing device affect product quality stability, increase the defect rate, and thus increase production costs. As a result, the company's competitiveness in the market is weakened, hindering efficient and stable large-scale production. Summary of the Invention

[0006] Given the problems of existing technologies, such as the inability to flip the raw materials on the conveyor belt and feed them into the hot press mold and the inability to continuously transport materials for production, a flip-over mechanism for transporting raw materials for the production of biodegradable packaging containers is proposed.

[0007] This application provides a reversible material conveying mechanism for the production of biodegradable packaging containers. Its purpose is to lift and flip the raw materials on the conveyor belt and center them into the hot press mold through the set reversible conveying mechanism, which solves the drawbacks of manual operation, and at the same time enables continuous conveying production, allowing the hot press device to work continuously, improving production efficiency, ensuring product quality, and reducing costs.

[0008] The technical solution of the present invention is as follows: a reversible material conveying mechanism for the production of biodegradable packaging containers, comprising an annular conveyor table, a material extrusion device and a reversible conveying mechanism fixedly installed above the annular conveyor table, and a hot pressing device disposed below the reversible conveying mechanism. The top of the annular conveyor table is slidably connected to a plurality of bearing slide plates, the inner wall of the bearing slide plates is provided with a central groove, the inner wall of the central groove is slidably connected to a material receiving cylinder, and a clamping assembly is disposed on the outside of the material receiving cylinder. The clamping assembly includes a clamping frame, with two symmetrically arranged movable rotating shafts fixedly connected to the inner wall of the clamping frame. Arc-shaped flipping blocks are rotatably connected to the outer walls of the two movable rotating shafts. A material discharge port is opened on the inner wall of the clamping frame, and the two arc-shaped flipping blocks are arranged opposite each other in the material discharge port and open and close through the two movable rotating shafts.

[0009] By adopting the above solution, the clamping components ensure stable and precise raw material conveying. Under its action, the receiving cylinder accurately receives and transports raw materials, avoiding spillage and waste, and improving raw material utilization. The arc-shaped flipping block opens and closes at the material inlet via a movable rotating shaft, allowing for flexible control of the material feeding time according to actual production needs. This helps improve product quality, making the production process more scientific, reasonable, and precise, and reducing the defect rate caused by improper feeding. In addition, this mechanism can lift and flip the raw materials on the conveyor belt, allowing them to enter the hot press mold in the center. This achieves automated operation, solving the drawbacks of low efficiency and poor precision of manual operation, and improving the production efficiency and quality of biodegradable packaging containers.

[0010] Furthermore, limit grooves are provided on both sides of the material receiving cylinder, and limit blocks are fixedly connected to the inner walls of both sides of the clamping frame. The clamping frame clamps the material receiving cylinder inside the clamping frame through the limit blocks and limit grooves.

[0011] Furthermore, the inner wall of the material receiving cylinder is provided with a material receiving cavity, which is connected to the material discharge port. When both of the arc-shaped flipping blocks close in the material discharge port, the material receiving cavity is sealed.

[0012] Furthermore, an arc-shaped slider is fixedly connected to the side of the material receiving cylinder away from the material receiving cavity, and the material receiving cylinder and the bearing slide plate are slidably connected to the central groove through the arc-shaped slider.

[0013] By adopting the above scheme and setting up a cooperative structure between the clamping frame and the material receiving cylinder, on the one hand, the material receiving cylinder can move smoothly under the drive of the carrying slide plate, and transport the raw materials from one processing stage to the next stage according to the preset path, ensuring the continuity and stability of the production process; on the other hand, the cooperative structure can clamp the material receiving cylinder inside the clamping frame and lift it out, which is convenient for flipping the material receiving cylinder; thus realizing the integration of raw material transportation and specific operations, and improving the convenience of the production process.

[0014] Furthermore, the outer wall of the annular conveyor is fixedly connected to a guide rail, the bottom of the bearing slide plate is slidably connected to the outer wall of the guide rail, the outer wall of the annular conveyor is drivenly connected to a conveyor belt, and the bearing slide plate is hinged to the conveyor belt.

[0015] By adopting the above solution and setting up guide rails and conveyor belts, the accuracy of the movement trajectory of the load-bearing slide is ensured, avoiding problems such as incorrect material conveying or equipment collisions caused by the offset of the load-bearing slide, thus improving the reliability of the production process.

[0016] Furthermore, the flipping conveyor mechanism includes a first mounting frame fixedly connected to the annular conveyor table, and a second mounting frame disposed on one side of the annular conveyor table. The inner walls of the first mounting frame and the second mounting frame are rotatably connected to rotating wheels. A flipping belt is driven between the two rotating wheels. A drop opening is formed between the two flipping belts and between the flipping belt and the external space. A servo motor is fixedly mounted on the top of the second mounting frame, and the rotating wheel located inside the second mounting frame is sleeved on the output shaft of the servo motor.

[0017] Furthermore, multiple matrix plates are fixedly connected to the outer walls of the two flipping belts, and multiple clamping frames are installed on the inner walls of two adjacent matrix plates.

[0018] Furthermore, a rotary cylinder and a locking block are fixedly installed on the outer walls of two adjacent matrix plates respectively. A bottom sealing strip is fixedly connected to the output end of the rotary cylinder. The end of the bottom sealing strip away from the rotary cylinder is engaged with the inner wall of the locking block. When the locking block is engaged in the bottom sealing strip, it blocks the movement of the arc-shaped flipping block.

[0019] By adopting the above scheme and through the set-up flipping conveyor mechanism, on the one hand, efficient flipping conveying of the material receiving cylinder can be achieved. The material receiving cylinder can carry the raw material to move on the circular path and flip precisely at the appropriate position, so as to smoothly send the raw material into the hot pressing device, thereby improving the raw material conveying efficiency and effectively reducing production time. On the other hand, precise control of raw material feeding is achieved. When feeding is required, the rotating cylinder drives the bottom sealing strip and the locking strip block to separate, so that the arc-shaped flipping block opens and the raw material falls from the drop port. When feeding is not required, the bottom sealing strip and the locking strip block are locked together to block the movement of the arc-shaped flipping block, prevent raw material leakage, and improve product quality.

[0020] Furthermore, a hot pressing mold is slidably connected to the inner wall of the hot pressing device, and the hot pressing mold is located below the drop port.

[0021] Using the above scheme, the raw materials falling into the hot press mold can be hot-pressed and formed by the hot pressing device.

[0022] The beneficial effects of this invention are: The set-up flipping conveyor mechanism flips the raw materials on the conveyor belt and sends them into the hot press mold. The rotating wheel drives the flipping belt to rotate under the drive of the servo motor. The matrix plate on the outer wall of the flipping belt is equipped with a clamping frame. The clamping frame clamps the material receiving cylinder through the cooperation of the limiting block and the limiting groove. When the material receiving cylinder moves to the flipping conveyor mechanism under the drive of the carrying slide, it can be lifted out and flipped with the flipping belt. In this way, the raw materials can enter the hot press mold in the center, realizing automated operation. Compared with manual operation, it not only improves efficiency, but also ensures that the raw materials are evenly distributed in the mold, improves the forming quality of the packaging container, and solves the drawbacks of low efficiency, poor accuracy and safety hazards of manual operation.

[0023] By using a circular conveyor platform, a carrying slide plate, a conveyor belt, and a tilting conveyor mechanism, continuous production is achieved. The guide rails of the circular conveyor platform ensure the accurate movement trajectory of the carrying slide plate. The conveyor belt drives the carrying slide plate and the material receiving cylinder to circulate on the circular path. Multiple material receiving cylinders can sequentially receive raw materials, and under the action of the tilting conveyor mechanism, the raw materials are sent into the hot pressing device. The hot pressing device no longer frequently waits for raw materials, the production process is continuous, production efficiency is improved, the product production cycle is shortened, energy consumption and equipment wear are reduced, the demand for large-scale orders is met, product quality stability is ensured, the defect rate is reduced, and the company's competitiveness in the market is enhanced.

[0024] By incorporating a clamping assembly and a material-bearing cylinder, the stability of raw material conveying and the accuracy of material feeding are improved. The clamping frame of the clamping assembly, through the cooperation of the limiting block and the limiting groove of the material-bearing cylinder, firmly clamps the material-bearing cylinder. The material-bearing cavity of the material-bearing cylinder is connected to the material-dropping port of the clamping frame. The arc-shaped flipping block opens and closes at the material-dropping port through a movable rotating shaft. Under the action of the clamping assembly, the material-bearing cylinder can accurately receive and transport raw materials, avoiding spillage and waste, and improving the utilization rate of raw materials. The arc-shaped flipping block can flexibly control the material feeding time according to production needs, reducing the defect rate caused by improper material feeding, making the production process more scientific, reasonable and precise, and further improving the production efficiency and quality of biodegradable packaging containers. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the structure of the flipping conveyor mechanism of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of point A in the middle; Figure 5 For the present invention Figure 3 A magnified structural diagram of point B in the middle section; Figure 6 This is a schematic diagram of the structure of the material receiving cylinder of the present invention; Figure 7 This is a schematic diagram of the clamping component of the present invention; Figure 8 This is a schematic diagram of the material receiving cavity structure of the present invention; Figure 9 This is a schematic diagram of the opening process of the arc-shaped flip block of the present invention; Figure 10 This is a schematic diagram of the hot pressing mold of the present invention.

[0026] In the picture: 1. Circular conveyor table; 11. Conveyor belt; 12. Guide rail; 13. Bearing slide plate; 14. Central groove; 15. Material receiving cylinder; 151. Material receiving cavity; 152. Arc-shaped slider; 153. Limiting groove; 2. Raw material extrusion device; 3. Tilting conveyor mechanism; 31. First mounting frame; 32. Rotating wheel; 33. Tilting belt; 331. Drop outlet; 34. Servo motor; 35. Second mounting frame; 36. Matrix plate; 361. Rotary cylinder; 362. Bottom sealing strip; 363. Clamping block; 37. Clamping assembly; 371. Clamping frame; 372. Drop outlet; 373. Movable rotating shaft; 374. Limiting block; 375. Arc-shaped tilting block; 4. Hot pressing device; 41. Hot pressing mold. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Reference Figure 1 - Figure 10 A reversible material conveying mechanism for the production of biodegradable packaging containers is provided, including an annular conveyor 1, a material extrusion device 2 and a reversible conveying mechanism 3 fixedly installed above the annular conveyor 1, and a hot pressing device 4 disposed below the reversible conveying mechanism 3. Multiple bearing slide plates 13 are slidably connected to the top of the annular conveyor 1. A central groove 14 is opened on the inner wall of the bearing slide plate 13. A material receiving cylinder 15 is slidably connected to the inner wall of the central groove 14. A clamping assembly 37 is disposed on the outside of the material receiving cylinder 15.

[0029] Reference Figure 5 - Figure 9 The clamping assembly 37 includes a clamping frame 371. Two symmetrically arranged movable rotating shafts 373 are fixedly connected to the inner wall of the clamping frame 371. Arc-shaped flipping blocks 375 are rotatably connected to the outer walls of the two movable rotating shafts 373. A material discharge port 372 is opened on the inner wall of the clamping frame 371. The two arc-shaped flipping blocks 375 are arranged opposite to each other in the material discharge port 372 and open and close through the two movable rotating shafts 373.

[0030] Specifically, the inner wall of the bearing slide plate 13 is provided with a central groove 14, the size of which matches the size of the material receiving cylinder 15, allowing the material receiving cylinder 15 to slide smoothly on the inner wall. As a component for carrying raw materials, the material receiving cylinder 15 is provided with a clamping assembly 37 on its exterior for precise operation and positioning. The curvature of the arc-shaped flipping block 375 can achieve tight fit and effective opening and closing during rotation. When material needs to be discharged, the arc-shaped flipping block 375 opens under the drive of the movable rotating shaft 373, allowing the raw material to fall smoothly from the discharge port 372. When material is not needed, the arc-shaped flipping block 375 closes to prevent material leakage.

[0031] The clamping component 37 ensures stable and precise material delivery. Under its action, the receiving cylinder 15 accurately receives and transports the material, avoiding spillage and waste, and improving material utilization. The arc-shaped flipping block 375 opens and closes at the discharge port 372 via the movable rotating shaft 373, which can flexibly control the material feeding time according to actual production needs, helping to improve product quality and making the production process more scientific, reasonable, and precise, reducing the defect rate caused by improper feeding. In addition, the mechanism can lift and flip the material on the conveyor belt 11, so that the material enters the hot press mold 41 in the center, realizing automated operation, solving the drawbacks of low efficiency and poor accuracy of manual operation, and improving the production efficiency and quality of biodegradable packaging containers.

[0032] Reference Figure 3 - Figure 8 The material receiving cylinder 15 has limit grooves 153 on both sides, and limit blocks 374 are fixedly connected to the inner walls of both sides of the clamping frame 371. The clamping frame 371 clamps the material receiving cylinder 15 inside the clamping frame 371 through the limit blocks 374 and the limit grooves 153. The inner wall of the material receiving cylinder 15 has a material receiving cavity 151, which is connected to the discharge port 372. When the two arc-shaped flipping blocks 375 are closed in the discharge port 372, they close the material receiving cavity 151. An arc-shaped slider 152 is fixedly connected to the side of the material receiving cylinder 15 away from the material receiving cavity 151. The material receiving cylinder 15 and the bearing slide plate 13 are slidably connected to the center groove 14 through the arc-shaped slider 152.

[0033] Specifically, the clamping frame 371 cooperates with the material receiving cylinder 15 through the limiting block 374 and the limiting groove 153, which can both allow the material receiving cylinder 15 to pass through under the drive of the bearing slide plate 13, and clamp the material receiving cylinder 15 inside the clamping frame 371 to lift the material receiving cylinder 15 out; when the two arc-shaped flipping blocks 375 are closed in the discharge port 372, they seal the material receiving cavity 151. When the arc-shaped flipping blocks 375 are closed, they form a good sealing effect with the contact parts with the material receiving cavity 151, which effectively avoids the leakage of raw materials and ensures the integrity of the raw materials during the conveying process.

[0034] By setting up a cooperative structure between the clamping frame 371 and the material receiving cylinder 15, on the one hand, the material receiving cylinder 15 can move smoothly under the drive of the carrying slide plate 13, and transport the raw materials from one processing stage to the next stage according to the preset path, ensuring the continuity and stability of the production process; on the other hand, this combined structure can clamp the material receiving cylinder 15 inside the clamping frame 371 and lift it out, which is convenient for flipping the material receiving cylinder 15; thus realizing the integration of raw material transportation and specific operations, and improving the convenience of the production process.

[0035] Reference Figure 2 - Figure 4The outer wall of the annular conveyor table 1 is fixedly connected to a guide rail 12, the bottom of the bearing slide plate 13 is slidably connected to the outer wall of the guide rail 12, and the outer wall of the annular conveyor table 1 is drivenly connected to a conveyor belt 11, with the bearing slide plate 13 hinged to the conveyor belt 11.

[0036] By setting the guide rail 12 and the conveyor belt 11, the accuracy of the movement trajectory of the bearing slide plate 13 is ensured, avoiding problems such as incorrect material conveying or equipment collision caused by the offset of the bearing slide plate 13, and improving the reliability of the production process.

[0037] Reference Figure 3 - Figure 10 The flipping conveyor mechanism 3 includes a first mounting frame 31 fixedly connected to the annular conveyor table 1, and a second mounting frame 35 disposed on one side of the annular conveyor table 1. Rotating wheels 32 are rotatably connected to the inner walls of both the first mounting frame 31 and the second mounting frame 35. A flipping belt 33 is driven between the two rotating wheels 32. Drop openings 331 are formed between the two flipping belts 33 and between the flipping belts 33 and the external space. A servo motor 34 is fixedly mounted on the top of the second mounting frame 35. The rotating wheels 32 located inside the second mounting frame 35 are sleeved on the servo motor. On the output shaft of the service motor 34, multiple matrix plates 36 are fixedly connected to the outer walls of the two flipping belts 33, and multiple clamping frames 371 are installed on the inner walls of two adjacent matrix plates 36. Rotary cylinders 361 and clamping blocks 363 are fixedly installed on the outer walls of two adjacent matrix plates 36 respectively. A bottom sealing strip 362 is fixedly connected to the output end of the rotary cylinder 361. The end of the bottom sealing strip 362 away from the rotary cylinder 361 is engaged with the inner wall of the clamping block 363. When the clamping block 363 is engaged in the bottom sealing strip 362, it blocks the movement of the arc-shaped flipping block 375.

[0038] The rotating conveyor mechanism 3 enables efficient rotating conveying of the material receiving cylinder 15. The material receiving cylinder 15 can carry the raw material along the circular path and precisely rotate at the appropriate position to smoothly deliver the raw material into the hot pressing device 4, thereby improving the material conveying efficiency and effectively reducing production time. On the other hand, it enables precise control of the material feeding. When feeding is required, the rotary cylinder 361 drives the bottom sealing strip 362 to separate from the locking strip block 363, causing the arc-shaped rotating block 375 to open and the raw material to fall from the drop port 331. When feeding is not required, the bottom sealing strip 362 and the locking strip block 363 engage to block the movement of the arc-shaped rotating block 375, preventing material leakage and improving product quality.

[0039] Reference Figure 10 A hot pressing mold 41 is slidably connected to the inner wall of the hot pressing device 4, and the hot pressing mold 41 is located below the drop port 331.

[0040] The hot pressing device 4 can be used to hot press the raw material that falls into the hot pressing mold 41.

[0041] Working principle of the invention: During operation, the raw material extrusion device 2 evenly extrudes the prepared raw material, which falls into the material receiving cavity 151 of the material receiving cylinder 15. The material receiving cylinder 15 is installed in the center of the bearing slide plate 13 through the arc-shaped slider 152. When the conveyor belt 11 on the annular conveyor table 1 is in operation, since the bearing slide plate 13 is hinged to the conveyor belt 11 and its bottom is slidably connected to the guide rail 12, the bearing slide plate 13 will slide in annularly along the top of the annular conveyor table 1 under the drive of the conveyor belt 11.

[0042] When multiple raw material-carrying slide plates 13 arrive at their respective clamping frames 371, the operation of the conveyor belt 11 is paused to ensure that the clamping frame 371 can accurately lift the material-carrying cylinders 15 from the central groove 14 and insert the empty material-carrying cylinders 15, avoiding operational errors caused by the movement of the conveyor belt 11. Then, the servo motor 34 is started, which drives the rotating belt 33 to rotate through the rotating wheel 32. The clamping frame 371 lifts the first row of raw material-carrying cylinders 15 from the central groove 14, and at the same time inserts the empty second row of material-carrying cylinders 15 into the central groove 14. The conveyor belt 11 continues to run, so that the next wave of raw material-carrying slide plates 13 arrive at their respective clamping frames 371.

[0043] After the multiple rows of material-bearing cylinders 15 are lifted from the central groove 14 by the clamping frame 371, the operation of the conveyor belt 11 is paused, the servo motor 34 is run, and the multiple rows of material-bearing cylinders 15 are transported to the top of the hot press mold 41 by the flipping belt 33; during the process of the material-bearing cylinders 15 being transported, they are flipped 180° at the rotating wheel 32 of the first mounting frame 31 so that the material-bearing cavity 151 faces downward.

[0044] After the multiple rows of material receiving cylinders 15 are successfully delivered to their positions, the material receiving chambers 151 of the material receiving cylinders 15 descend, but are sealed by the closed arc-shaped flipping blocks 375. Then, the material rolls on the arc-shaped slope of the arc-shaped flipping blocks 375 to the middle position of the two arc-shaped flipping blocks 375, so that the material can fall in a concentrated manner and ensure that it falls accurately into the mold cavity of the hot press mold 41. Then, multiple rotary cylinders 361 are operated synchronously. The rotary cylinders 361 drive the bottom sealing strip 362 to rotate, disengage from the clamping strip block 363, and release the obstruction to the arc-shaped flipping blocks 375.

[0045] After the arc-shaped flipping block 375 is released from the obstruction, it rotates freely at the movable shaft 373 under the action of gravity. The raw material falls from the opened discharge port 372 and into the mold cavity of the hot press mold 41 through the discharge port 331. Then it is hot-pressed and formed by the hot press device 4 before entering the next step.

[0046] When the rotary cylinder 361 is activated, another set of first-empty material-bearing cylinders 15 are located in the central groove 14. The conveyor belt 11 can continue to operate, replacing the material-bearing cylinders 15 that have completed unloading inside the clamping frame 371 with new material-bearing cylinders 15. When the hot pressing device 4 is performing hot pressing molding, the conveyor belt 11 operates synchronously to continuously replace the material-bearing cylinders 15, so that the hot pressing device 4 can immediately perform the next hot pressing after completing one hot pressing, reducing waiting time and thus improving overall production efficiency.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A reversible raw material conveying mechanism for the production of biodegradable packaging containers, comprising a ring conveyor (1), a raw material extrusion device (2) fixedly installed above the ring conveyor (1), and a reversible conveying mechanism (3), and a hot pressing device (4) disposed below the reversible conveying mechanism (3), characterized in that: The top of the annular conveyor (1) is slidably connected to a plurality of bearing slide plates (13). The inner wall of the bearing slide plate (13) is provided with a central groove (14). The inner wall of the central groove (14) is slidably connected to a material receiving cylinder (15). The outside of the material receiving cylinder (15) is provided with a clamping assembly (37). The clamping assembly (37) includes a clamping frame (371). Two symmetrically arranged movable shafts (373) are fixedly connected to the inner wall of the clamping frame (371). Arc-shaped flipping blocks (375) are rotatably connected to the outer walls of the two movable shafts (373). A material drop port (372) is opened on the inner wall of the clamping frame (371). The two arc-shaped flipping blocks (375) are arranged opposite to each other in the material drop port (372) and open and close through the two movable shafts (373).

2. The reversible raw material conveying mechanism for biodegradable packaging container production according to claim 1, characterized in that: The material receiving cylinder (15) has a limit groove (153) on both sides, and the inner walls of both sides of the clamping frame (371) are fixedly connected with limit blocks (374). The clamping frame (371) clamps the material receiving cylinder (15) inside the clamping frame (371) through the limit blocks (374) and the limit grooves (153).

3. The reversible raw material conveying mechanism for biodegradable packaging container production according to claim 2, characterized in that: The inner wall of the material receiving cylinder (15) is provided with a material receiving cavity (151), which is connected to the material discharge port (372). When the two arc-shaped flipping blocks (375) are closed in the material discharge port (372), they will close the material receiving cavity (151).

4. The reversible raw material conveying mechanism for biodegradable packaging container production according to claim 3, characterized in that: An arc-shaped slider (152) is fixedly connected to the side of the material receiving cylinder (15) away from the material receiving cavity (151). The material receiving cylinder (15) and the bearing slide plate (13) are slidably connected through the arc-shaped slider (152) and the central groove (14).

5. The reversible raw material conveying mechanism for biodegradable packaging container production according to claim 1, characterized in that: The outer wall of the annular conveyor (1) is fixedly connected to a guide rail (12), the bottom of the bearing slide plate (13) is slidably connected to the outer wall of the guide rail (12), the outer wall of the annular conveyor (1) is drivenly connected to a conveyor belt (11), and the bearing slide plate (13) is hinged to the conveyor belt (11).

6. The reversible raw material conveying mechanism for biodegradable packaging container production according to claim 1, characterized in that: The flipping conveyor mechanism (3) includes a first mounting frame (31) fixedly connected to the annular conveyor table (1) and a second mounting frame (35) disposed on one side of the annular conveyor table (1). The inner walls of the first mounting frame (31) and the second mounting frame (35) are rotatably connected with rotating wheels (32). A flipping belt (33) is connected between the two rotating wheels (32). A drop opening (331) is formed between the two flipping belts (33) and between the flipping belt (33) and the external space. A servo motor (34) is fixedly installed on the top of the second mounting frame (35). The rotating wheel (32) located inside the second mounting frame (35) is sleeved on the output shaft of the servo motor (34).

7. The reversible raw material conveying mechanism for biodegradable packaging container production according to claim 6, characterized in that: Multiple matrix plates (36) are fixedly connected to the outer walls of the two flipping belts (33), and multiple clamping frames (371) are installed on the inner walls of two adjacent matrix plates (36).

8. The reversible raw material conveying mechanism for biodegradable packaging container production according to claim 7, characterized in that: A rotary cylinder (361) and a locking block (363) are fixedly installed on the outer walls of two adjacent matrix plates (36), respectively. A bottom sealing strip (362) is fixedly connected to the output end of the rotary cylinder (361). The end of the bottom sealing strip (362) away from the rotary cylinder (361) is engaged with the inner wall of the locking block (363). When the locking block (363) is engaged in the bottom sealing strip (362), it blocks the movement of the arc-shaped flipping block (375).

9. The reversible raw material conveying mechanism for biodegradable packaging container production according to claim 6, characterized in that: The inner wall of the hot pressing device (4) is slidably connected to a hot pressing mold (41), which is located below the drop opening (331).

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