Automatic bag unpacking machine and unpacking method

Abstract

The application discloses an automatic bag opening machine and a bag opening method, which comprise a feeding mechanism arranged outside a machine shell of the bag opening machine, the feeding mechanism comprises a conveying frame arranged in sliding mode, a conveying belt is rotationally arranged on the conveying frame, the bag opening machine is provided with a feeding port matched with the feeding mechanism, the bag opening machine is provided with a sealing mechanism for sealing the feeding port, a bag breaking position and a waste bag recycling position are arranged in the machine shell, a bag breaking mechanism and a waste bag recycling mechanism are respectively arranged at the bag breaking position and the waste bag recycling position, and a bag grabbing mechanism capable of moving to the bag breaking position and the waste bag recycling position is further arranged in the machine shell. Compared with the prior art, the application realizes automatic bag feeding, bag taking, bag opening and waste bag recycling, has compact overall structural layout, small equipment appearance and smaller installation space. The cooperation of the feeding mechanism and the sealing mechanism improves the sealing performance of the machine shell, so that the bag opening, bag shaking and waste bag recycling can be automatically completed in a sealed space, and the pollution of the external environment to the materials is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bag opening machines, in particular to an automatic bag opening machine and a bag opening method. BACKGROUND

[0002] In the food, pharmaceutical, health care, chemical, metallurgical and other industries, powder is usually packed in two bags, one outer bag and one inner bag. For the inner bag, a robot hand is usually used to grab the bag to a knife for opening. In order to smoothly transport the bag to the bag opening machine platform, a transition roller is generally provided in the middle, or a running belt is provided on the bag opening machine, which makes it difficult for the bag opening machine to be sealed at the transition roller or running belt. Dust may float out during bag opening, and the cleaning workload of the bag opening machine is increased. In addition, the equipment in the bag opening machine is numerous, especially the bag grabbing mechanism, which has a complex structure and many cleaning dead angles. It is difficult to clean thoroughly with fixed cleaning nozzles in the bag opening machine. SUMMARY

[0003] The present application provides an automatic bag opening machine and a bag opening method to solve the problem of dust floating out during bag opening of the existing bag opening machine.

[0004] The present application provides an automatic bag opening machine, which comprises a feeding mechanism arranged outside the casing of the bag opening machine. The feeding mechanism comprises a slidingly arranged conveying frame, and a conveying belt is rotatably arranged on the conveying frame. The bag opening machine is provided with a feeding port matched with the feeding mechanism. The bag opening machine is provided with a sealing mechanism for sealing the feeding port. The casing is provided with a bag breaking position and a waste bag recycling position. The bag breaking position and the waste bag recycling position are respectively provided with a bag breaking mechanism and a waste bag recycling mechanism. The casing is also provided with a bag grabbing mechanism capable of moving to the bag breaking position and the waste bag recycling position.

[0005] Preferably, the bag breaking mechanism comprises a hopper and a bag breaking assembly arranged at the upper end of the hopper. The bag breaking assembly comprises a plurality of bag breaking rods, and a blade is arranged on each bag breaking rod. A bag breaking cylinder is connected to each bag breaking rod to drive the movement of the bag breaking rod. The plurality of bag breaking rods are arranged in an X-shaped distribution.

[0006] Preferably, the waste bag recycling mechanism comprises a waste bag recycling hopper and an auger rotatably arranged in the waste bag recycling hopper.

[0007] Preferably, a quick release door is detachably connected to the casing. An extension member is fixed to the quick release door. The front end of the extension member is fixed to the bag grabbing mechanism, and the rear end of the extension member is rotatably arranged on a moving block. The moving block moves horizontally outside the casing.

[0008] Preferably, the sealing mechanism comprises a sealing plate and a first cylinder. The sealing plate is fixed to the piston rod of the first cylinder. An air seal is arranged between the sealing plate and the feeding port.

[0009] Preferably, the upper end of the bag opening machine is provided with a dust suction mechanism, a suction duct of the dust suction mechanism is provided with a filter assembly, and the filter assembly is connected with a back flushing assembly.

[0010] Preferably, the bag opening machine is provided with a plurality of cleaning balls, a part of the cleaning balls are distributed on the hopper, and a part of the cleaning balls are distributed on the waste bag recycling hopper.

[0011] The application also provides a bag opening method comprising the automatic bag opening machine.

[0012] S1: opening the feeding port, moving the conveying frame forward to extend into the machine shell from the feeding port;

[0013] S2: feeding the bags on the conveying belt, and retreating the conveying frame to drop the bags on the bag taking position of the platform;

[0014] S3: withdrawing the conveying frame from the machine shell, sealing the feeding port, and pumping air in the machine shell to form negative pressure;

[0015] S4: grabbing the bags by the bag grabbing mechanism, moving to the bag breaking position, breaking the bags on the bag grabbing mechanism by the blade, and unloading the bags;

[0016] S5: moving the unloaded bags to the waste bag recycling position by the bag grabbing mechanism, dropping the bags into the auger below, and recycling the waste bags by the auger;

[0017] S6: repeating steps S1-S5.

[0018] Preferably, in step S3, the back flushing assembly is started to back flush the filter assembly after the dust suction mechanism works for a predetermined time.

[0019] Preferably, after the bag opening is completed, the quick release door on the machine shell is opened, the bag grabbing mechanism is moved from the machine shell to the outside of the machine shell, the bag grabbing mechanism is rotated to move away from the machine shell, the devices in the machine shell are cleaned by the cleaning balls, and the bag grabbing mechanism is cleaned outside the machine shell.

[0020] Compared with the prior art, the application realizes automatic bag feeding, bag taking, bag opening, bag shaking and waste bag recycling, has compact overall structure layout, small equipment shape, and smaller installation space. The cooperation of the feeding mechanism and the sealing mechanism improves the sealing performance of the machine shell, so that the bag opening, bag shaking and waste bag recycling can be automatically completed in the sealed space, the pollution of the external environment to the material is reduced, dust is prevented from being blown out, and the clean area requirement is met. In addition, the cooperation of the quick release door, the guide rail, the rotating shaft, the bag grabbing mechanism and the telescopic part enables the difficult-to-clean parts to be quickly moved out of the machine shell for cleaning, the machine shell is automatically cleaned by the cleaning balls, the cleaning efficiency and cleaning effect of the bag opening machine are improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0022] Figure 1 Structure diagram of the present application;

[0023] Figure 2 Structure diagram of the present application when the bag grabbing mechanism moves out of the machine shell;

[0024] Figure 3 Structure diagram of the present application when the bag breaking mechanism is in the top view;

[0025] Figure 4 Structure diagram of the present application when the bag breaking mechanism is in the top view;

[0026] Figure 5 Structure diagram of the present application when the bag breaking mechanism is in the top view; Figure 3

[0027] Structure diagram of the present application when the bag breaking mechanism is in the top view; Figure 6

[0028] Structure diagram of the present application when the bag breaking mechanism is in the top view; Figure 7

[0029] Structure diagram of the present application when the bag breaking mechanism is in the top view; Figure 8

[0030] Structure diagram of the present application when the bag breaking mechanism is in the top view. Figure 9 Reference signs:

[0031] 100. Bag breaking machine, 200. Bag breaking mechanism, 300. Waste bag recycling mechanism, 1. Machine shell, 2. Feeding mechanism, 021. Conveying frame, 022. Conveying belt, 011. Feeding port, 3. Sealing mechanism, 4. Quick release door, 5. Telescopic part, 6. Bag grabbing mechanism, 7. Moving block, 8. Slide rail mounting seat, 9. Piano cover, 031. Sealing plate, 032. First air cylinder, 10. Guide mechanism, 11. Dust collection mechanism, 12. Filter assembly, 13. Back flushing assembly, 14. Cleaning ball, 15. Hopper, 16. Waste bag recycling hopper, 17. Bag taking position, 18. Bag breaking position, 19. Waste bag recycling position, 20. Auger, 21. Bag breaking rod, 22. Knife blade, 23. Bag breaking cylinder.

[0032] DETAILED DESCRIPTION

[0033] ​In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0034] Referring to the drawings Figure 1 and the drawings Figure 7 , the present embodiment provides an automatic bag opening machine, which comprises a feeding mechanism 2 arranged outside the casing 1 of the bag opening machine 100, the feeding mechanism 2 comprising a slidingly arranged conveying frame 021, and a conveying belt 022 rotatably arranged on the conveying frame 021, the bag opening machine 100 being provided with a feeding opening 011 matched with the feeding mechanism 2, the bag opening machine 100 being provided with a sealing mechanism 3 for sealing the feeding opening 011, the casing 1 being provided with a bag breaking position 18 and a waste bag recycling position 19, the bag breaking position 18 and the waste bag recycling position 19 being respectively provided with a bag breaking mechanism 200 and a waste bag recycling mechanism 300, and the casing 1 being further provided with a bag grabbing mechanism 6 capable of moving to the bag breaking position 18 and the waste bag recycling position 19. The material bag is stopped after being conveyed to the middle position of the conveying belt 022, the sealing mechanism 3 opens the feeding opening 011 of the bag opening machine 100, referring to the drawings Figure 6 , the feeding mechanism 2 pushes the conveying frame 021 and the material bag thereon into the bag opening machine 100, and the conveying belt 022 is operated forward while the feeding mechanism 2 drives the conveying frame 021 to move back, so as to unload the material bag at the bag taking position 17 on the platform of the bag opening machine 100. After the conveying frame 021 exits the bag opening machine 100, the sealing mechanism 3 re-seals the feeding opening 011, so that the bag opening machine 100 can avoid dust from the feeding opening 011 when the bag is opened. The unloading mode can successfully deliver the material bag to the required accurate position (the bag taking position 17) inside the bag opening machine 100, and ensure that the material bag is not deformed, thereby avoiding affecting the bag grabbing of the bag grabbing mechanism 6. Secondly, the feeding mechanism 2 is installed outside the bag opening machine 100, which does not affect the sealing and cleaning of the bag opening machine 100, does not occupy the space of the bag opening machine 100, makes the structure of the bag opening machine 100 simple, and reduces the cleaning dead angle. Thirdly, the material bag will leak powder when it is on the conveying belt 022, and the leaked powder will be poured into the material cavity of the bag opening machine 100 when the conveying belt 022 is unloaded, which can effectively reduce the dust flowing outside. After the material bag is conveyed to the bag taking position 17, the bag grabbing mechanism 6 grabs the material bag and moves to the bag breaking position 18 to be broken by the bag breaking mechanism 200 for unloading, and after the unloading is completed, the bag grabbing mechanism 6 grabs the empty bag and moves to the waste bag recycling position 19, and then the empty bag is recycled by the waste bag recycling mechanism 300.

[0035] An embodiment of the bag breaking mechanism 200: referring to the drawings Figure 3 and the drawings Figure 4The bag breaking mechanism 200 comprises a hopper 15 and a bag breaking assembly arranged at the upper end of the hopper 15, the bag breaking assembly comprising a plurality of bag breaking rods 21, the front end of each bag breaking rod 21 being provided with a blade 22, and a bag breaking cylinder 23 being connected to each bag breaking rod 21 to drive the movement of the bag breaking rod 21, the plurality of bag breaking rods 21 being arranged in an X shape, and a mesh plate being arranged between the bag breaking rods 21 and the hopper 15 to support the bag when the blade 22 cuts the bag, so that the bag cutting is more stable, and the waste bag can be prevented from falling into the hopper 15 when the bag is shaken, and the mesh plate does not need to be fastened with fasteners and can be directly taken out for cleaning. Figure 5 The four bag breaking rods 21 are provided with the blades 22 which are initially arranged in a converging state in the middle of the hopper 15, and after the bag grabbing mechanism 6 grabs the bag and drops the bag on the blades 22, the piston rod of the bag breaking cylinder 23 is retracted to drive the blades 22 to move outward, and the four blades 22 cut the bag to be opened, and the material falls into the hopper 15.

[0036] One embodiment of the waste bag recycling mechanism 300: the waste bag recycling mechanism 300 comprises a waste bag recycling hopper 16 and an auger 20 rotatably arranged in the waste bag recycling hopper 16. The bag grabbing mechanism 6 grabs the empty bag to the upper side of the waste bag recycling hopper 16, and then releases the empty bag, and the empty bag falls into the waste bag recycling hopper 16, and the auger 20 extrudes and recycles the empty bag.

[0037] As another embodiment of the present application: referring to the drawings Figure 2 The machine shell 1 is detachably connected with a quick release door 4, the quick release door 4 is fixed with an extension piece 5, the front end of the extension piece 5 is fixed with the bag grabbing mechanism 6, the rear end of the extension piece 5 is rotatably arranged on a moving block 7, and the moving block 7 moves horizontally outside the machine shell 1. Specifically, the moving block 7 is a guide rail, and the guide rail is slidably connected with a slide rail mounting seat 8 in the machine shell 1. The extension piece 5 drives the bag grabbing mechanism 6 to move back and forth between the bag taking position 17, the bag breaking position 18 and the waste bag recycling position 19. In the present application, a part of the extension piece 5 is arranged outside the bag opening machine 100, so that the space occupied by the bag grabbing mechanism 6 in the bag opening machine 100 can be effectively reduced. The quick release door 4 is detached from the bag opening machine 100, and the bag opening machine 100 is left with a hole matching the quick release door 4, and the moving guide rail moves the bag grabbing mechanism 6 and the extension piece 5 out of the hole. When the bag grabbing mechanism 6 and the extension piece 5 are outside the bag opening machine 100, the bag grabbing mechanism 6 and the extension piece 5 are convenient to disassemble and clean.

[0038] One embodiment of the sealing mechanism 3: the sealing mechanism 3 comprises a sealing plate 031 and a first cylinder 032, the sealing plate 031 is fixed with the piston rod of the first cylinder 032, and a gas seal is arranged between the sealing plate 031 and the feeding port 011. When feeding is needed, the gas seal is first deflated, and then the first cylinder 032 lowers the sealing plate 031 to open the feeding port 011. After the bag feeding mechanism 2 feeds the bag to the bag taking position 17, the first cylinder 032 raises the sealing plate 031 to the feeding port 011, and the gas seal inflates to seal the feeding port 011.

[0039] As another embodiment of the present application: the upper end of the bag opener 100 is provided with a dust suction mechanism 11, a filter assembly 12 is arranged on the air suction pipeline of the dust suction mechanism 11, and the filter assembly 12 is connected with a back flushing assembly 13. After the air-tight sealing of the air charging to the feeding port 011, the dust suction mechanism 11 performs the air suction action to form a negative pressure in the machine shell 1, thereby preventing the phenomenon of dust flying out during the subsequent bag opening work.

[0040] As another embodiment of the present application: the bag opener 100 is provided with a plurality of cleaning balls 14, a part of the cleaning balls 14 are distributed on the hopper 15, a part of the cleaning balls 14 are distributed on the waste bag recycling hopper 16, and the other part is arranged at the top end of the machine shell 1, so as to realize the omnibearing automatic cleaning. Specifically, the bottom of the machine shell 1 is provided with a slope around the periphery, so as to facilitate the water flow to be concentrated to the middle hopper 15 during cleaning.

[0041] As another embodiment of the present application: the bag opener 100 is provided with a guide mechanism 10, the guide mechanism 10 is fixedly connected with the bag grabbing mechanism 6, and the telescopic member 5 needs to drive the bag grabbing mechanism 6 to move between the bag taking position 17, the bag breaking position 18 and the waste bag recycling position 19. The required stroke is relatively long, and the long stroke will reduce the service life and the running stability of the telescopic member 5. The guide mechanism 10 in the bag opener 100 can support and guide the bag grabbing mechanism 6, thereby reducing the load of the telescopic member 5 and prolonging the service life of the telescopic member 5.

[0042] As another embodiment of the present application: a rotating shaft is rotatably arranged between the guide rail and the tail end of the telescopic member 5. The rotating shaft is arranged to facilitate the rotation of the bag grabbing mechanism 6 to a position farther away from the bag opener 100, thereby obtaining a larger dismounting space and cleaning space.

[0043] A specific embodiment of the bag grabbing mechanism 6: referring to the accompanying drawings Figure 8 and the accompanying drawings Figure 9 The bag grabbing mechanism 6 comprises a protective cover, a lifting cylinder and a bag grabbing assembly. The lower end of the lifting cylinder in the protective cover is fixed with the bag grabbing assembly, and the solenoid valve is also sealed in the protective cover. The protective cover is fixed with the guide mechanism 10 and the telescopic member 5, and the lifting cylinder is used to drive the bag grabbing assembly to move up and down.

[0044] As another embodiment of the present application: the bag grabbing assembly comprises a baffle and oppositely arranged grippers, the grippers are rotatably arranged on the baffle, the grippers are connected with opening and closing cylinders, the baffle is fixed with the lifting cylinder, and the opening and closing cylinders are used to drive the grippers to close and open. Specifically, the baffle is provided with a avoiding groove matched with the grippers.

[0045] The bag grabbing assembly further comprises a cylinder mounting plate and a shaking cylinder, the cylinder mounting plate is fixed with the lifting cylinder, the shaking cylinder is fixed at the bottom of the cylinder mounting plate, the lower end of the shaking cylinder is fixed with a baffle, a guide rod is arranged between the baffle and the cylinder mounting plate, and the guide rod is in sliding connection with the cylinder mounting plate.

[0046] As another embodiment of the present application, a guide shield is fixed at the upper end of the cylinder mounting plate to avoid dust entering.

[0047] Specifically, a spring is mounted on the guide rod, and the spring is used for buffering when the shaking cylinder is quickly extended and retracted.

[0048] As another embodiment of the present application, the protective cover is provided with an interface connected with the shaking cylinder and the opening and closing cylinder, the protective cover is provided with a clamp joint, and a hose is connected to the clamp joint. The sensor cable and the air pipe of the shaking cylinder and the opening and closing cylinder are connected to the protective cover through the interface, and then connected to the top of the inner cavity of the bag opening machine 100 and then connected to the outside of the bag opening machine 100 through the hose with the clamp joint. The hose with the clamp joint is suspended in the inner cavity, which does not affect the movement of the gripper and does not have the problem of easy formation of a sanitary dead angle of a drag chain structure. In this setting, the cable and the air pipe are connected through multiple interfaces, which can reduce wiring.

[0049] The accordion cover 9 is sleeved on the telescopic part 5 in the bag opening machine 100. Specifically, the accordion cover 9 is arranged on the telescopic part 5 between the bag grabbing mechanism 6 and the quick release door 4. The accordion cover 9 can effectively solve the risk of dust and water entering the telescopic part 5, and at the same time, the telescopic part 5 can adapt to the working environment of salt-containing and corrosion-containing powders.

[0050] One embodiment of the guide mechanism 10; the guide mechanism 10 comprises a mounting seat, a guide light shaft and a linear bearing, the protective cover is detachably connected with the mounting seat, the mounting seat is fixed with the linear bearing, the linear bearing is in sliding connection with the guide light shaft, and the guide light shaft is fixed in the bag opening machine 100.

[0051] Specifically, the telescopic part 5 is a multi-section electric cylinder. The quick release door 4 is pressed to the side surface of the bag opening machine 100 through the quick clamp to realize sealing.

[0052] Specifically, the guide rail is installed on the top of the machine shell 1 of the bag opening machine 100 through the slide rail mounting seat 8.

[0053] The present application can realize that the bag grabbing mechanism 6 is installed on the outside and then pushed into the inner cavity of the bag opening machine 100 through the movement of the guide rail, and when cleaning is needed, the quick clamp on the quick opening door 4 is opened, and the bag grabbing mechanism 6 can be quickly moved to the outside of the bag opening machine 100 for cleaning. Secondly, part of the telescopic part 5 is arranged outside the bag opening machine 100, which makes the required installation space of the bag grabbing mechanism 6 in the bag opening machine 100 become less. Thirdly, the arrangement of the quick opening door 4 makes the bag grabbing mechanism 6 operate in a sealed space, reduces the pollution of materials to the external environment, and meets the requirements of the clean area.

[0054] The present application also provides a bag opening method comprising the automatic bag opening machine.

[0055] Step 1: The material bag is conveyed to the conveying belt 022, the sealing mechanism 3 opens the feeding port 011, and the conveying frame 021 moves forward to extend into the machine shell 1 from the feeding port 011;

[0056] Step 2: The conveying belt 022 forwards the material bag, and at the same time, the conveying frame 021 retreats back, and the material bag falls into the bag taking position 17 of the platform;

[0057] Step 3: The conveying frame 021 is withdrawn from the machine shell 1, the sealing mechanism 3 seals the feeding port 011, the dust collection mechanism 11 forms a negative pressure in the machine shell 1 by suction, and the material is unloaded in a sealed space, which reduces the pollution of the external environment to the material and avoids dust flying outside, meeting the requirements of the clean area;

[0058] Step 4: After the bag grabbing mechanism 6 grabs the material bag at the bag taking position 17, it moves to the bag breaking position 18, and when the material bag falls onto the blade 22, the bag breaking cylinder 23 drives the blade 22 to move and cut the material bag, and the material is unloaded in the hopper 15;

[0059] Step 5: The bag grabbing mechanism 6 transports the unloaded material bag to the waste bag recycling position 19, and the bag grabbing mechanism 6 releases the empty bag, and the empty bag falls into the below auger 20, and the auger 20 extrudes and recycles the waste bag;

[0060] Step 6: Repeat steps 1-5 to open the next bag;

[0061] In step 3, after the dust collection mechanism 11 works for a predetermined time, the back blowing assembly 13 is started to back blow the filter assembly 12 to prevent the filter element in the filter assembly 12 from being blocked.

[0062] When the bag opening machine 100 needs to be cleaned after the bag opening is completed, the quick opening door 4 on the machine shell 1 is opened, the bag grabbing mechanism 6 is moved from the machine shell 1 to the outside of the machine shell 1 through the guide rail, and then the bag grabbing mechanism 6 is rotated to move away from the machine shell 1. The equipment in the machine shell 1 is cleaned by the cleaning ball 14, and the bag grabbing mechanism 6 is cleaned outside the machine shell 1. Through the design, the inner cavity of the bag opening machine 100 is automatically cleaned, and the difficult-to-clean components are quickly moved out of the machine shell 1 for cleaning, so that the bag opening machine 100 can be quickly and completely cleaned.

[0063] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An automatic bag unpacking machine characterized by comprising: The utility model provides a bag opening machine, including the feeding mechanism (2) that sets up the casing (1) of bag opening machine (100) outside, the feeding mechanism (2) includes the slidingly arranged conveying frame (021), the conveying belt (022) is rotationally arranged on the conveying frame (021), the bag opening machine (100) is equipped with the feeding port (011) with feeding mechanism (2) cooperation, the bag opening machine (100) is equipped with the sealing mechanism (3) for sealing feeding port (011), the casing (1) is equipped with bag breaking position (18) and waste bag recycling position (19) in, bag breaking position (18) and waste bag recycling position (19) are equipped with bag breaking mechanism (200) and waste bag recycling mechanism (300) respectively, the casing (1) is also equipped with the bag grabbing mechanism (6) that can move to bag breaking position (18) and waste bag recycling position (19).

2. The automatic bag opener (100) according to claim 1, characterized in that The bag breaking mechanism (200) includes a hopper (15) and a bag breaking assembly provided at an upper end of the hopper (15), the bag breaking assembly includes a plurality of bag breaking rods (21), the bag breaking rods (21) are provided with blades (22), the bag breaking rods (21) are connected with bag breaking cylinders (23) for driving the bag breaking rods (21) to move, and the bag breaking rods (21) are distributed in an X shape.

3. The automatic bag opener (100) according to claim 2, characterized in that The waste bag recycling mechanism (300) includes a waste bag recycling hopper (16) and a screw conveyor (20) rotationally arranged in the waste bag recycling hopper (16).

4. The automatic bag opener of claim 1, wherein The casing (1) is detachably connected with a quick-release door (4), the quick-release door (4) is fixed with an extension piece (5), a front end of the extension piece (5) is fixed with the bag grabbing mechanism (6), a rear end of the extension piece (5) is rotationally arranged on a moving block (7), and the moving block (7) moves horizontally outside the casing (1).

5. The automatic bag opener of claim 1, wherein, The sealing mechanism (3) includes a sealing plate (031) and a first cylinder, the sealing plate (031) is fixed with a piston rod of the first cylinder, and an air seal is arranged between the sealing plate (031) and the feeding port (011).

6. The automatic bag opener of claim 4, wherein, An upper end of the bag opening machine (100) is provided with a dust suction mechanism (11), the dust suction mechanism (11) is provided with a filtering assembly (12) on a suction pipeline, and the filtering assembly (12) is connected with a back flushing assembly (13).

7. The automatic bag opener of claim 3, wherein The bag opening machine (100) is provided with a plurality of cleaning balls (14), and some of the cleaning balls (14) are arranged on the hopper (15) and some of the cleaning balls (14) are arranged on the waste bag recycling hopper (16).

8. A bag opening method comprising the automatic bag opener according to any one of claims 1 to 7, characterized by, The utility model provides a bag opening machine, including the following steps: S1: opening the feeding port (011), the conveying frame (021) moves forward to extend into the casing (1) from the feeding port (011); S2: the conveying belt (022) forwards the bag, and the conveying frame (021) retreats back, and the bag falls on the bag taking position (17) of the platform; S3: the conveying frame (021) exits from the casing (1), the feeding port (011) is sealed, and the casing (1) is evacuated to form a negative pressure; S4: the bag grabbing mechanism (6) grabs the bag and then moves to the bag breaking position (18), the blade (22) cuts the bag on the bag grabbing mechanism (6), and then the bag is unloaded; S5: the bag grabbing mechanism (6) transports the empty bag to the waste bag recycling position (19), and the bag falls into the auger (20) below, and the auger (20) extrudes the waste bag for recycling; S6: repeat steps S1-S5.

9. The bag opening method of the automatic bag opener according to claim 8, characterized by, In step S3, after the dust suction mechanism (11) works for a predetermined time, the back blowing assembly (13) is started to back blow the filter assembly (12).

10. The bag opening method of the automatic bag opener according to claim 8, wherein After the bag is opened, the quick opening door (4) on the machine shell (1) is opened, the bag grabbing mechanism (6) moves from inside the machine shell (1) to outside the machine shell (1), then rotates the bag grabbing mechanism (6) to make the bag grabbing mechanism (6) away from the machine shell (1), and the devices in the machine shell (1) are cleaned by the cleaning ball (14), and the bag grabbing mechanism (6) is cleaned outside the machine shell (1).

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