Waste bag rolling mechanism

Abstract

The invention discloses a waste bag rolling mechanism which is characterized in that a first bag rolling assembly and a second bag rolling assembly are arranged on a main frame, a bag rolling cavity is formed between the first bag rolling assembly and the second bag rolling assembly, the second bag rolling assembly is rotatably arranged on the main frame, and the bag rolling cavity is closed or opened through rotation; the bag rolling cavity is located between the first belt of the first bag rolling assembly and the second belt of the second bag rolling assembly, and in the area defined by the driving rollers and the driven rollers of the first bag rolling assembly and the second bag rolling assembly, the first bag rolling assembly and the second bag rolling assembly cooperate to complete waste bag rolling. Waste bags are wound and coated through cooperation of the first bag winding assembly and the second bag winding assembly, waste bag rolls are sent out and recycled after being wound and coated, waste bags do not need to be manually collected, the labor cost is saved, the influence of dust on the working environment is reduced, and the physical and psychological health of workers is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial waste bag recycling, and in particular to a waste bag winding mechanism. Background Art

[0002] Tonne bags have the characteristics of large volume, light weight, and convenient loading and unloading. They are one of the common packaging materials and are suitable for shipping bulk powdered materials.

[0003] The management of tonne bag waste bags is an important link in environmental protection and resource recycling. With the continuous increase in the generation of waste bags, how to effectively handle these waste bags, reduce environmental pollution, and at the same time achieve the reuse of resources has become an urgent problem to be solved in the current industrial field.

[0004] At present, the recycling of tonne bag waste bags is usually collected through basic conveying devices or manually. This not only has a high labor cost, but also generates a large amount of dust during the collection process, which not only affects the working environment but also is not conducive to the physical and mental health of workers. Summary of the Invention

[0005] In view of the above-mentioned disadvantages of the existing waste bag collection methods, the applicant provides a waste bag winding mechanism with a reasonable structure, which winds and wraps the waste bags and then sends them out for recycling, saving labor costs, reducing the impact of dust on the working environment, and ensuring the physical and mental health of workers.

[0006] The technical solution adopted by the present invention is as follows: A waste bag winding mechanism, in which a first bag winding assembly and a second bag winding assembly are arranged on a main frame. There is a bag winding cavity between the first bag winding assembly and the second bag winding assembly. The second bag winding assembly is rotatably arranged on the main frame and can close or open the bag winding cavity by rotation; The first bag winding assembly and the second bag winding assembly are respectively provided with a belt, a driving roller, a driven roller, a tensioning roller and a driving motor. The belt is wound around the driving roller, the driven roller and the tensioning roller. The driving motor is connected to the driving roller, and the driving motor drives the driving roller to rotate, thereby driving the belt to run. The running directions of the belts of the first bag winding assembly and the second bag winding assembly are the same; the bag winding cavity is located between the first belt of the first bag winding assembly and the second belt of the second bag winding assembly. Within the area defined by the driving rollers and the driven rollers of the first bag winding assembly and the second bag winding assembly, the first bag winding assembly and the second bag winding assembly cooperate to complete the winding of the waste bags; The tensioning rollers of the first bag winding assembly and the second bag winding assembly are respectively connected to tensioning adjustment members, and the tensioning rollers can be adjusted in real time to keep the belt always tensioned.

[0007] As a further improvement of the above technical solution: The first bag winding assembly and the second bag winding assembly are also respectively provided with limiting rollers; The driven rollers of the first roll bag assembly include an upper driven roller and a lower driven roller. The first limiting roller is arranged inside the first belt, between the upper driven roller and the lower driven roller. In the initial state, the first belt is not in contact with the first limiting roller. When winding the waste bag, the first belt is recessed towards the first limiting roller and adheres to the first limiting roller. The second limiting roller of the second roll bag assembly is arranged between the second driving roller and the second driven roller. The second belt is wound around the second limiting roller. When winding the waste bag, the second belt is recessed towards the second limiting roller and adheres to the second limiting roller.

[0008] When the second roll bag assembly is closed, the centers of the upper driven roller - the first limiting roller - the lower driven roller - the first driving roller - the second limiting roller - the second driven roller - the upper driven roller are sequentially connected to enclose a convex hexagonal area, and the bag winding cavity is located within this convex hexagonal area.

[0009] The tension adjustment member of the first tensioning roller of the first roll bag assembly is a tensioning cylinder. The two ends of the first tensioning roller are respectively connected to the tensioning cylinder. The tensioning cylinder is installed on the main frame. A first chute is provided on the main frame along the Z direction. The two ends of the first tensioning roller are respectively inserted into the first chute. The tensioning cylinder can drive the first tensioning roller to move along the first chute. The tension adjustment member of the second tensioning roller of the second roll bag assembly is a tensioning spring. The two ends of the second tensioning roller are respectively connected to the tensioning spring. The other ends of the tensioning spring are connected to the connecting seats on the support plate. A second chute is provided on the support plate. The two ends of the second tensioning roller are respectively inserted into the second chute. The second tensioning roller can move along the second chute under the elastic force of the tensioning spring. Or, the tension adjustment members of the first tensioning roller and the second tensioning roller are hydraulic cylinders and electric push rods.

[0010] The second driving roller, the second driven roller, the second tensioning roller, and the second limiting roller of the second roll bag assembly are arranged between two support plates. The second driven roller is inserted through the main frame. The connecting seats of the two support plates are respectively connected to a swing cylinder. The swing cylinder can drive the support plate to rotate around the central axis of the second driven roller, thereby driving the second roll bag assembly to close or open. A convex block is provided on the support plate, below the second chute. An auxiliary rod is inserted into the convex block.

[0011] On the main frame, a film wrapping assembly is provided above the first roll bag assembly. The film wrapping assembly is provided with a film cylinder, a film winding driving roller, a film winding driven roller, and a film winding motor. The film winding driving roller and the film winding driven roller are arranged side by side and below the film cylinder. The film on the film cylinder passes through the film winding gap between the film winding driving roller and the film winding driven roller. The film winding driving roller is connected to the film winding motor.

[0012] On the main frame, a bag feeding roller is arranged above the first waste bag winding assembly. The bag feeding roller and the film wrapping assembly are arranged at intervals, and the bag feeding roller is connected to a bag feeding motor.

[0013] An inlet bag baffle assembly is arranged on the main frame. The inlet bag baffle assembly includes a first baffle, a second baffle, and a third baffle. The first baffle is arranged on the top side of the main frame and slopes downward towards the bag inlet. The second baffle is arranged on the right side and the lower side of the bag feeding roller. The third baffle is vertically arranged between the film wrapping assembly and the bag feeding roller.

[0014] The second baffle includes an upper vertical blocking portion, a horizontal blocking portion, a lower vertical blocking portion, and an arc portion. The horizontal blocking portion is horizontally arranged below the bag feeding roller. The upper vertical blocking portion extends vertically upward from one end of the horizontal blocking portion and is arranged on the right side of the bag feeding roller. The lower vertical blocking portion extends vertically downward from the other end of the horizontal blocking portion. The arc portion is connected to the lower end of the lower vertical blocking portion. The horizontal blocking portion and the upper vertical blocking portion, and the horizontal blocking portion and the lower vertical blocking portion are respectively transitioned through rounded corners. Flange edges are respectively arranged on both sides of the upper vertical blocking portion, the horizontal blocking portion, and the lower vertical blocking portion. There is a gap between the third baffle and the lower vertical blocking portion of the second baffle, forming a lower feeding channel for waste bags.

[0015] A bag rolling slope is arranged on the outer side of the bag outlet side of the main frame. The bag rolling slope is arranged on the outer side of the waste bag winding cavity, and the bag rolling surface of the bag rolling slope is an inclined surface.

[0016] The beneficial effects of the present invention are as follows: Through the cooperation of the first waste bag winding assembly and the second waste bag winding assembly, the present invention completes the winding and film wrapping of waste bags. After the waste bag roll is wound and film wrapped, it is sent outwards for recycling. There is no need for manual collection of waste bags, saving labor costs, reducing the impact of dust on the working environment, and ensuring the physical and mental health of workers.

[0017] The waste bags of the present invention are wound into a cylindrical shape in the hexagonal waste bag winding cavity through the action of a belt. The winding is simple and convenient, and the wound waste bag roll is tight, which is convenient for collection. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of the internal side view structure of the present invention, showing the initial state schematic diagram before starting to wind waste bags.

[0020] Figure 3 It is a schematic diagram of the internal side view structure of the present invention, showing the state schematic diagram when the waste bags are wound well and ready to start film wrapping.

[0021] Figure 4 It is a schematic diagram of the internal side view structure of the present invention, showing the state schematic diagram when the waste bags are wound and film wrapped and ready to be sent out.

[0022] Figure 5Schematic three-dimensional structure diagram of the lower baffle plate.

[0023] Figure 6 Schematic three-dimensional structure diagram of the support plate of the second roll bag assembly.

[0024] In the figure: 1. Main frame; 11. Bag inlet; 12. First chute; 2. Bag feeding roller 3. First roll bag assembly; 31. First belt; 32. First driving roller; 33. First driven roller; 331. Upper driven roller; 332. Lower driven roller; 34. First tensioning roller; 35. First limiting roller; 36. Tensioning cylinder; 37. First driving motor; 4. Second roll bag assembly; 41. Second belt; 42. Second driving roller; 43. Second driven roller; 44. Second tensioning roller; 45. Second limiting roller; 46. Tensioning spring; 47. Second driving motor; 48. Swing cylinder; 49. Support plate; 491. Second chute; 492. Protrusion; 493. Auxiliary rod; 494. Connecting seat; 5. Film wrapping assembly; 50. Film; 51. Film cylinder; 52. Film winding driving roller; 53. Film winding driven roller; 54. Film winding motor; 6. Bag rolling slope 7. Bag inlet baffle assembly; 71. First baffle; 72. Second baffle; 721. Upper vertical blocking part; 722. Horizontal blocking part; 723. Lower vertical blocking part; 724. Arc part; 725. Edge; 73. Third baffle; 10. Bag rolling cavity; 20. Lower feeding channel; 100. Waste bag roll. Detailed implementation manners

[0025] The following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings.

[0026] For the convenience of description, an XYZ rectangular coordinate system is marked in the drawings. The X-axis is the left-right direction of the frame, the Y-axis is the front-back direction of the frame, and the Z-axis is the height direction of the frame. The X-axis, Y-axis, and Z-axis are orthogonal to each other. The naming and setting of the X, Y, and Z axes are for fully explaining the relevant structures and are not restrictive. Slightly adjusting the horizontal and vertical directions also falls within the protection scope of the present invention.

[0027] As Figures 1 to 4As shown in the figure, the present invention provides a waste bag rolling mechanism for recycling waste bags. A bag feeding roller 2, a first bag rolling assembly 3, a second bag rolling assembly 4, a film wrapping assembly 5 and a bag inlet baffle assembly 7 are arranged on a main frame 1. A bag rolling slope 6 is arranged on the outer side of the bag outlet side of the main frame 1. There is a bag rolling cavity 10 between the first bag rolling assembly 3 and the second bag rolling assembly 4. The second bag rolling assembly 4 is rotatably arranged on the main frame 1 and can close or open the bag rolling cavity 10 by rotation.

[0028] As Figure 1 shown, sealing plates are respectively arranged on the bottom side in the Z direction, the left side in the X direction, and the front and rear sides in the Y direction of the main frame 1. A bag inlet 11 is opened on the top side in the Z direction of the main frame 1. The right side in the X direction of the main frame 1 is an open surface. As Figures 1 to 4 shown, the bag feeding roller 2, the first bag rolling assembly 3 and the film wrapping assembly 5 are arranged inside the main frame 1. The film wrapping assembly 5 and the bag feeding roller 2 are arranged above the first bag rolling assembly 3 and are spaced left and right in the X direction. The second bag rolling assembly 4 is arranged on the right open surface of the main frame 1 and is located to the right of the first bag rolling assembly 3.

[0029] The bag feeding roller 2 is connected to a bag feeding motor (the bag feeding motor is not shown in the figure). The bag feeding motor drives the bag feeding roller 2 to rotate and conveys the waste bag downward.

[0030] As Figures 2 to 4As shown in the figure, the first roll bag assembly 3 is provided with a first belt 31, a first driving roller 32, a first driven roller 33, a first tensioning roller 34, a first limiting roller 35, a tensioning cylinder 36 and a first driving motor 37. The first driving roller 32, the first driven roller 33, the first tensioning roller 34 and the first limiting roller 35 are horizontally arranged in the front and rear side plates of the main frame 1 along the Y direction respectively. The first belt 31 is wound around the first driving roller 32, the first driven roller 33 and the first tensioning roller 34. One end of the first driving roller 32 is connected to the first driving motor 37, and the first driving motor 37 drives the first driving roller 32 to rotate, thereby driving the first belt 31 to circulate around each roller. Both ends of the first tensioning roller 34 are respectively connected to the tensioning cylinder 36. The tensioning cylinder 36 is installed outside the side plate of the main frame 1. A vertical and oblong first chute 12 is formed in the side plate of the main frame 1 along the Z direction. Both ends of the first tensioning roller 34 are respectively inserted into the first chute 12. The tensioning cylinder 36 can drive the first tensioning roller 34 to move along the first chute 12 to adjust the tension of the first belt 31, so that the first belt 31 is always kept in a tensioned state. A plurality of first driven rollers 33 are provided. In this embodiment, an upper driven roller 331 and a lower driven roller 332 are provided. The first limiting roller 35 is arranged inside the first belt 31 and between the upper driven roller 331 and the lower driven roller 332. In the initial state, the first belt 31 is not in contact with the first limiting roller 35. When the waste bag is wound up, the first belt 31 is recessed towards the first limiting roller 35 and adheres to the first limiting roller 35. The first limiting roller 35 limits the recess of the first belt 31 and confines the first belt 31 at a specified position to ensure the smooth winding of the bag. The centers of the upper driven roller 331, the first limiting roller 35, the lower driven roller 332 and the first driving roller 32 are connected in sequence, and the connection lines form three sides of a hexagon.

[0031] As Figures 2 to 4As shown in the figure, the second roll bag assembly 4 is provided with a second belt 41, a second driving roller 42, a second driven roller 43, a second tensioning roller 44, a second limiting roller 45, a tension spring 46, a second driving motor 47, a swing cylinder 48 and a support plate 49. The two support plates 49 are parallel to the side sealing plates of the main frame 1. The second driving roller 42, the second driven roller 43, the second tensioning roller 44 and the second limiting roller 45 are horizontally arranged in the Y direction between the two support plates 49 respectively. The second belt 41 is wound around the second driving roller 42, the second driven roller 43, the second tensioning roller 44 and the second limiting roller 45. One end of the second driving roller 42 is connected to the second driving motor 47, and the second driving motor 47 drives the second driving roller 42 to rotate, so as to drive the second belt 41 to circulate around each roller; the running direction of the second belt 41 is the same as and synchronous with that of the first belt 31. The two ends of the second driven roller 43 respectively pass through the side sealing plates of the main frame 1, and bearings are sleeved between the second driven roller 43 and the side enclosure of the main frame 1. The second roll bag assembly 4 can rotate around the central axis of the second driven roller 43. The two ends of the second tensioning roller 44 are respectively connected with tension springs 46, and the other ends of the tension springs 46 are connected to the connecting seats 494 of the support plates 49. As Figure 6 shown, oblong second sliding grooves 491 are formed in the support plates 49. As Figures 2 to 4 shown, the two ends of the second tensioning roller 44 are respectively arranged in the second sliding grooves 491. The second tensioning roller 44 can move along the second sliding grooves 491 under the elastic force of the tension springs 46 to adjust the tension of the second belt 41, so that the second belt 41 is always in a tensioned state. The second limiting roller 45 is located between the second driving roller 42 and the second driven roller 43. When the waste bag is wound up, the second belt 41 is recessed towards the second limiting roller 45 and attached to the second limiting roller 45. The second limiting roller 45 can limit the recess of the second belt 41 and limit the second belt 41 at a specified position to ensure the smooth winding of the bag. The connecting seats 494 of the two support plates 49 are respectively connected to the swing cylinder 48. The swing cylinder 48 is installed outside the side sealing plate of the main frame 1. The swing cylinder 48 can drive the support plate 49 to rotate around the central axis of the second driven roller 43, so as to drive the second roll bag assembly 4 to close or open. As Figures 1 to 3 shown, in the initial state or when the bag is wound and coated, the second roll bag assembly 4 is closed. As Figure 4 shown, after the waste bag is wound up and coated, the second roll bag assembly 4 is opened.

[0032] As Figures 2 to 4As shown, when the second bag winding assembly 4 is closed, the centers of the upper driven roller 331 - the first limiting roller 35 - the lower driven roller 332 - the first driving roller 32 - the second limiting roller 45 - the second driven roller 43 - the upper driven roller 331 are connected in sequence, and the connecting line forms a convex hexagon. The upper driven roller 331, the first limiting roller 35, the lower driven roller 332, the first driving roller 32, the second limiting roller 45, and the second driven roller 43 are located at the six angular positions of the hexagon. The bag winding cavity 10 is located within this convex hexagon area. The waste bag is wound into a cylindrical waste bag roll 100 by the first belt 31 and the second belt 41 in the bag winding cavity 10. The waste bag is wound into a cylinder in the hexagonal bag winding cavity 10 through the action of the belt. The winding is simple and convenient, and the wound waste bag roll 100 is compact, facilitating collection.

[0033] As Figure 6 shown, a convex block 492 is provided on the support plate 49 of the second bag winding assembly 4, below the second chute 491, and an auxiliary rod 493 is inserted into the convex block 492. The design of the convex block 492 and the auxiliary rod 493 can assist in the better installation of the second belt 41. Since the second belt 41 needs to ensure a high tension in the initial state, during installation, first, the auxiliary rod 493 is used to drive the large stretching of the tension spring 46, and then the second belt 41 in the relaxed state is installed on each roller of the second bag winding assembly 4. After releasing the auxiliary rod 493, the tension spring 46 pulls back, causing the second belt 41 to be tensioned on each roller.

[0034] As Figures 1 to 4 shown, the film wrapping assembly 5 is provided with a film cylinder 51, a film winding driving roller 52, a film winding driven roller 53, and a film winding motor 54. The film winding driving roller 52 and the film winding driven roller 53 are arranged side by side to form a set of film winding rollers and are provided below the film cylinder 51. The film 50 on the film cylinder 51 passes through the film winding gap between the film winding driving roller 52 and the film winding driven roller 53. The film winding driving roller 52 is connected to the film winding motor 54, and the film winding motor 54 drives the film winding driving roller 52 to rotate, thereby conveying the film 50 downward. The film winding motor 54 has a braking function. After there is enough film 50 below, the film winding motor 54 brakes and stops releasing the film. The bag winding force breaks the film 50, and the belt continues to move to complete the film wrapping of the ton bag.

[0035] As Figure 1 shown, the bag inlet baffle assembly 7 includes a first baffle 71, a second baffle 72, and a third baffle 73. The first baffle 71 is provided on the Z - direction top side of the main frame 1, and the first baffle 71 is respectively provided on the left and right sides in the X - direction of the bag inlet 11. The first baffle 71 is approximately horizontal and slightly inclined downward towards the bag inlet 11, facilitating guiding the waste bag to the bag inlet 11. The second baffle 72 is provided on the right side and the lower side of the bag feeding roller 2; As Figure 5As shown in the figure, the second baffle 72 includes an upper vertical baffle portion 721, a horizontal baffle portion 722, a lower vertical baffle portion 723 and an arc portion 724. The horizontal baffle portion 722 is horizontally arranged below the bag feeding roller 2. The upper vertical baffle portion 721 extends vertically upward from one end of the horizontal baffle portion 722 in the positive Z direction and is arranged on the right side of the bag feeding roller 2. The lower vertical baffle portion 723 extends vertically downward from the other end of the horizontal baffle portion 722 in the negative Z direction. One end of the arc portion 724 is connected to the lower end of the lower vertical baffle portion 723, and the other end extends in the positive X direction. The horizontal baffle portion 722 is respectively transitioned by fillets with the upper vertical baffle portion 721 and the lower vertical baffle portion 723. On both sides of the upper vertical baffle portion 721, the horizontal baffle portion 722 and the lower vertical baffle portion 723, there are provided baffle edges 725 respectively. The baffle edges 725 can limit the waste bags within the track range of the second baffle 72, so that the waste bags can be smoothly guided downward. As Figure 1 shown in the figure, the third baffle 73 is vertically arranged between the film wrapping assembly 5 and the bag feeding roller 2. On the one hand, it can separate the film wrapping assembly 5 and the bag feeding roller 2. On the other hand, it can also force the waste bags to turn downward and move towards the first bag winding assembly 3 by blocking. There is a spacing between the third baffle 73 and the lower vertical baffle portion 723 of the second baffle 72, forming a lower feeding channel 20 for the waste bags. The waste bags are sent downward to the first bag winding assembly 3 through the lower feeding channel 20.

[0036] As Figures 1 to 4 shown in the figure, the bag rolling slope 6 is arranged outside the bag winding cavity 10. The bag rolling surface of the bag rolling slope 6 is an inclined surface, which is convenient for the wrapped waste bag roll 100 to be sent outwards.

[0037] When the present invention is actually used, as Figure 2 shown in the figure, in the initial state, the second bag winding assembly 4 is closed. The first tension roller 34 of the first bag winding assembly 3 and the second tension roller 44 of the second bag winding assembly 4 are in the upper position, and the first belt 31 and the second belt 41 are stretched. When starting to feed the bags, the bag feeding motor, the first driving motor 37 and the second driving motor 47 are started. The first belt 31 and the second belt 41 rotate synchronously and in the same direction. The waste bags are sent downward to the first belt 31 through the bag feeding roller 2 and are sent to the bag winding cavity 10 following the first belt 31. As Figure 3 shown in the figure, under the extrusion of the waste bags, the first belt 31 and the second belt 41 respectively sink towards the limiting roller. The bag winding cavity 10 forms a hexagonal area. The waste bags are rolled into a cylindrical waste bag roll 100 by the rotating first belt 31 and the second belt 41 within the hexagonal bag winding cavity 10. After the waste bag roll in 100 is rolled into a cylindrical shape, the film winding motor 54 is started, driving the film winding driving roller 52 to lower the film 50 onto the first belt 31. The film 50 follows the first belt 31 and is rolled into the bag winding cavity 10 and wrapped outside the waste bag roll 100. After the film 50 is lowered enough, the film winding motor 54 is braked, and the film 50 stops being lowered. The film 50 is broken, and the bagging of the waste bag roll 100 is completed as the belt continues to rotate. As Figure 4As shown, after the film wrapping is completed, the first drive motor 37 stops running, and the second drive motor 47 continues to run. The swing cylinder 48 drives the second bag winding assembly 4 to open the bag winding cavity 10. The waste bag roll 100 is taken out of the bag winding cavity 10 under the action of the continuously rotating second belt 41 and is sent out along the bag rolling surface of the bag rolling slope 6 to complete the waste bag recycling. After one waste bag is recycled, the swing cylinder 48 drives the second bag winding assembly 4 to close the bag winding cavity 10, and the first belt 31 and the second belt 41 are stretched and reset to continue winding the next waste bag. During the winding process of the waste bag, the tensioning cylinder 36 of the first bag winding assembly 3 adjusts the first tensioning roller 34 in real time to keep the first belt 31 always tensioned and prevent the first belt 31 from loosening; the second tensioning roller 44 of the second bag winding assembly 4 is adjusted in real time through the tensioning spring 46 to keep the second belt 41 always tensioned and prevent the second belt 41 from loosening.

[0038] The present invention completes the winding and film wrapping of waste bags through the cooperation of the first bag winding assembly 3 and the second bag winding assembly 4. After the waste bag roll 100 is wound and film wrapped, it is sent out for recycling, eliminating the need for manual collection of waste bags, saving labor costs, reducing the impact of dust on the working environment, and ensuring the physical and mental health of workers.

[0039] The tensioning adjustment member is not limited to cylinders and springs, and homogeneous replacement solutions such as hydraulic cylinders and electric push rods also fall within the protection scope of the present invention.

[0040] The above description is an explanation of the present invention, not a limitation of the present invention. Without departing from the spirit of the present invention, the present invention can be modified in any form.

Claims

1. A waste bag winding mechanism, characterized in that: The main frame (1) is provided with a first roll bag assembly (3) and a second roll bag assembly (4). There is a roll bag cavity (10) between the first roll bag assembly (3) and the second roll bag assembly (4). The second roll bag assembly (4) is rotatably arranged on the main frame (1) and can close or open the roll bag cavity (10) by rotation. The first roll bag assembly (3) and the second roll bag assembly (4) are respectively provided with a belt, a driving roller, a driven roller, a tensioning roller and a driving motor. The belt is wound around the driving roller, the driven roller and the tensioning roller. The driving motor is connected to the driving roller. The driving motor drives the driving roller to rotate, thereby driving the belt to run. The running directions of the belts of the first roll bag assembly (3) and the second roll bag assembly (4) are the same. The roll bag cavity (10) is located between the first belt (31) of the first roll bag assembly (3) and the second belt (41) of the second roll bag assembly (4). Within the area defined by the driving rollers and the driven rollers of the first roll bag assembly (3) and the second roll bag assembly (4), the first roll bag assembly (3) and the second roll bag assembly (4) cooperate to complete the winding of waste bags. The tensioning rollers of the first roll bag assembly (3) and the second roll bag assembly (4) are respectively connected to tension adjusting members, and the tensioning rollers can be adjusted in real time to keep the belt always tensioned.

2. The waste bag winding mechanism according to claim 1, wherein: The first roll bag assembly (3) and the second roll bag assembly (4) are also respectively provided with limiting rollers. The driven roller of the first roll bag assembly (3) includes an upper driven roller (331) and a lower driven roller (332). The first limiting roller (35) is arranged inside the first belt (31) and between the upper driven roller (331) and the lower driven roller (332). In the initial state, the first belt (31) does not contact the first limiting roller (35). When winding the waste bag, the first belt (31) is recessed towards the direction of the first limiting roller (35) and adheres to the first limiting roller (35). The second limiting roller (45) of the second roll bag assembly (4) is arranged between the second driving roller (42) and the second driven roller (43). The second belt (41) is wound around the second limiting roller (45). When winding the waste bag, the second belt (41) is recessed towards the direction of the second limiting roller (45) and adheres to the second limiting roller (45).

3. The waste bag winding mechanism according to claim 2, characterized in that: When the second roll bag assembly (4) is closed, the centers of the upper driven roller (331) - the first limiting roller (35) - the lower driven roller (332) - the first driving roller (32) - the second limiting roller (45) - the second driven roller (43) - the upper driven roller (331) are sequentially connected to form a convex hexagon area, and the roll bag cavity (10) is located within this convex hexagon area.

4. The waste bag winding mechanism according to claim 1, wherein: The tension adjusting member of the first tension roller (34) of the first roll bag assembly (3) is a tension cylinder (36). The two ends of the first tension roller (34) are respectively connected to the tension cylinder (36). The tension cylinder (36) is installed on the main frame (1). A first chute (12) is provided on the main frame (1) along the Z direction. The two ends of the first tension roller (34) are respectively inserted into the first chute (12). The tension cylinder (36) can drive the first tension roller (34) to move along the first chute (12). The tension adjusting member of the second tension roller (44) of the second roll bag assembly (4) is a tension spring (46). The two ends of the second tension roller (44) are respectively connected to the tension spring (46). The other ends of the tension springs (46) are connected to the connecting seats (494) of the support plate (49). A second chute (491) is provided on the support plate (49). The two ends of the second tension roller (44) are respectively inserted into the second chute (491). The second tension roller (44) can move along the second chute (491) under the elastic force of the tension spring (46). Alternatively, the tension adjusting members of the first tension roller (34) and the second tension roller (44) are hydraulic cylinders or electric push rods.

5. The waste bag winding mechanism according to claim 1, wherein: The second driving roller (42), the second driven roller (43), the second tension roller (44), and the second limiting roller (45) of the second roll bag assembly (4) are arranged between two support plates (49). The second driven roller (43) is inserted through the main frame (1). The connecting seats (494) of the two support plates (49) are respectively connected to a swing cylinder (48). The swing cylinder (48) can drive the support plate (49) to rotate around the central axis of the second driven roller (43), thereby driving the second roll bag assembly (4) to close or open. A convex block (492) is provided on the support plate (49) below the second chute (491). An auxiliary rod (493) is inserted into the convex block (492).

6. The waste bag winding mechanism according to claim 1, characterized in that: On the main frame (1), a film wrapping assembly (5) is provided above the first roll bag assembly (3). The film wrapping assembly (5) is provided with a film cylinder (51), a film winding driving roller (52), a film winding driven roller (53), and a film winding motor (54). The film winding driving roller (52) and the film winding driven roller (53) are arranged side by side and provided below the film cylinder (51). The film (50) on the film cylinder (51) passes through the film winding gap between the film winding driving roller (52) and the film winding driven roller (53). The film winding driving roller (52) is connected to the film winding motor (54).

7. The waste bag winding mechanism according to claim 1 or 6, characterized in that: On the main frame (1), a bag feeding roller (2) is provided above the first roll bag assembly (3). The bag feeding roller (2) and the film wrapping assembly (5) are arranged at intervals. The bag feeding roller (2) is connected to a bag feeding motor.

8. The waste bag winding mechanism according to claim 7, characterized in that: An inlet bag baffle assembly (7) is provided on the main frame (1). The inlet bag baffle assembly (7) includes a first baffle (71), a second baffle (72), and a third baffle (73). The first baffle (71) is arranged on the top side of the main frame (1) and slopes downward towards the bag inlet (11). The second baffle (72) is arranged on the right side and the lower side of the bag feeding roller (2). The third baffle (73) is vertically arranged between the film wrapping assembly (5) and the bag feeding roller (2).

9. The waste winding bag mechanism according to claim 8, wherein: The second baffle (72) includes an upper vertical blocking portion (721), a horizontal blocking portion (722), a lower vertical blocking portion (723), and an arc portion (724). The horizontal blocking portion (722) is horizontally arranged below the bag feeding roller (2). The upper vertical blocking portion (721) extends vertically upward from one end of the horizontal blocking portion (722) and is arranged on the right side of the bag feeding roller (2). The lower vertical blocking portion (723) extends vertically downward from the other end of the horizontal blocking portion (722). The arc portion (724) is connected to the lower end of the lower vertical blocking portion (723). The horizontal blocking portion (722) and the upper vertical blocking portion (721), the lower vertical blocking portion (723) are respectively transitioned by rounded corners. The two sides of the upper vertical blocking portion (721), the horizontal blocking portion (722), and the lower vertical blocking portion (723) are respectively provided with blocking edges (725). There is a spacing between the third baffle (73) and the lower vertical blocking portion (723) of the second baffle (72), forming a lower conveying channel (20) for waste bags.

10. The waste bag winding mechanism according to claim 1, characterized in that: A bag rolling slope (6) is provided on the outer side of the bag outlet side of the main frame (1). The bag rolling slope (6) is arranged on the outer side of the bag rolling cavity (10). The bag rolling surface of the bag rolling slope (6) is an inclined surface.

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