Full-automatic edible mushroom tying mechanism

Abstract

The utility model discloses a full-automatic edible mushroom tying mechanism. The machine comprises a bag erecting device, a bag grabbing and moving device, a bag pushing device, a nail feeding and oil supplying device, a nail pushing and tying device, a bag blocking device and a bag discharging device. The electromagnetic valve mounting panel is mounted on the frame; the nail-feeding oil supply device is positioned on the upper part of the frame; the bag grabbing and moving device is located in the middle of the frame and located on the side of the nail feeding and oil supplying device. The bag pushing device is located on the lower portion of the frame and located below the bag grabbing and moving device. The nail pushing and tying device is located in the middle of the frame and located on the side of the bag grabbing and moving device. The bag blocking device is installed in the middle of the frame and located below the bag grabbing and moving device. The bag discharging device is located on the lower portion of the frame and located on the side of the bag pushing device. The bag erecting device is located on the lower portion of the frame and located on the side of the bag pushing device. And a cylinder buffer device is arranged on the bag erecting device. The device has the advantages of being high in automation degree, capable of detecting fault occurrence positions, high in equipment stability, good in tying effect and capable of preventing fungus bags from falling down and scattering materials.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of full-automatic edible mushroom zipping mechanism. BACKGROUND

[0002] In the production process of Lentinula edodes, aluminum nail buckle is needed to be used to zip to ensure the sealing of bag, to prevent miscellaneous bacteria from polluting mushroom material. The traditional production method is manual zipping, which is time-consuming and laborious, with great working intensity, extremely low working efficiency, and unstable zipping effect, which can easily cause bag damage and lead to pollution by miscellaneous bacteria, resulting in no mushroom growth, greatly affecting mushroom growth rate and quality.

[0003] The existing manual zipping machine and semi-automatic zipping machine on the market have the following disadvantages: (1) low degree of automation, manual assistance is needed to complete production; (2) difficult to produce continuously, manual nail adding and lubricating oil adding are needed during production to maintain production; (3) low degree of intelligence, unable to intelligently detect fault occurrence position to assist workers in troubleshooting; (4) poor equipment stability, production is easily interrupted due to nail jamming and bag jamming during production; (5) poor zipping effect, and it is difficult to achieve consistent zipping effect; (6) bag is easily damaged during zipping, and it is difficult to ensure the integrity of the bag; (7) when the bag falls from the bagging mechanism, it is easy to scatter due to excessive speed, causing mushroom material waste and equipment bottom mushroom material accumulation.

[0004] Therefore, it is necessary to develop a full-automatic edible mushroom zipping mechanism with high degree of automation, fault occurrence position detection, high equipment stability, good zipping effect and prevention of bag scattering when falling. SUMMARY

[0005] The utility model aims at providing a kind of full-automatic edible mushroom zipping mechanism, with high degree of automation, fault occurrence position detection, high equipment stability, good zipping effect and prevention of bag scattering when falling.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a kind of full-automatic edible mushroom zipping mechanism, characterized by: including bagging device, solenoid valve installation panel, bag grabbing and moving device, bag pushing device, nail and oil feeding device, nail pushing and zipping device, bag blocking device and bag discharging device;

[0007] The solenoid valve installation panel is installed on the frame; it has high degree of intelligence, can intelligently detect fault points, and assist workers to troubleshoot faster and more accurately to ensure production;

[0008] The nail and oil feeding device is located at the upper part of the frame;

[0009] The bag grabbing and moving device is located at the middle part of the frame and at the side of the nail and oil feeding device;

[0010] The pushing bag device is located at the lower part of the frame and below the bag grabbing and moving device;

[0011] The pin pushing and notching device is located at the middle part of the frame and beside the bag grabbing and moving device;

[0012] The bag blocking device is installed at the middle part of the frame and below the bag grabbing and moving device;

[0013] The bag discharging device is located at the lower part of the frame and beside the pushing bag device;

[0014] The bag standing device is located at the lower part of the frame and beside the pushing bag device;

[0015] The bag standing device is provided with a cylinder buffering device.

[0016] In the above technical solution, the bag standing device comprises a pair of photoelectric sensors, a bag stabilizing brush, a bag standing base, a bag standing rotary bearing seat, a bag standing cylinder installation main plate, a bag standing cylinder and a bag standing sliding plate;

[0017] One end of the bag standing cylinder is connected with the middle part of the outer side of the bag standing sliding plate, and the other end is connected with the bag standing cylinder installation main plate;

[0018] The lower end of the outer side of the bag standing sliding plate is connected with the bag standing base through the bag standing rotary bearing seat;

[0019] The cylinder buffering device is located at the lower end of the inner side of the bag standing sliding plate;

[0020] The pair of photoelectric sensors are installed on both sides of the middle section of the bag standing sliding plate to detect the falling signal of the fungus bag (as shown in the figure); the photoelectric sensors are connected with the electromagnetic valve installation panel; Figure 3

[0021] The bag stabilizing brush is installed at the bottom of the cylinder of the cylinder buffering device.

[0022] In the above technical solution, the nail feeding and oil supplying device comprises a nail rack, a nail chain guide device, a nail chain sliding plate, a buckle installation adjusting block, an electric lubricating oil pump and a speed regulating motor;

[0023] The nail rack is installed at the middle part of the frame and directly above the pin pushing and notching device;

[0024] The nail chain guide device is located between the nail chain sliding plate and the nail rack;

[0025] The buckle installation adjusting block is located beside the buckle;

[0026] The speed regulating motor is located beside the nail rack and connected with the nail feeding gear of the nail chain guide device;

[0027] ​The electric lubricating oil pump is located at the side of the nail rack and is installed on the main plate of the nail feeding and oil supplying device; the oil supply of the nail feeding and oil supplying device is the electric lubricating oil pump, and the oil supply can be continuous and intermittent; and the nail feeding mechanism is provided with a nail chain guide sliding plate box nail chain guide device, so that the nails can smoothly descend without any deviation and overturning.

[0028] In the technical scheme, the nail chain guide device comprises a nail feeding gear, an inductive proximity sensor, a nail chain guide plate, a nail chain guide conical block, a pressing roller and a nail chain;

[0029] The nail feeding gear and the pressing roller are both installed on the nail rack and oppositely arranged on both sides of the nail chain.

[0030] The nail chain guide plate is located on the nail chain sliding plate and above the nail feeding gear.

[0031] The nail chain guide conical block is located above the pressing roller; one end of the nail chain guide conical block is hinged to the nail chain guide plate, and the other end abuts against the inner side of the nail chain.

[0032] The inductive proximity sensor is located on the nail rack and above the side of the nail feeding gear; the inductive proximity sensor is connected with an electromagnetic valve mounting panel; the inductive proximity sensor can detect whether the nail chain is used up; if the nail chain is used up, an alarm is stopped to replace the nail chain disc buckle (as shown in the figure). Figure 6

[0033] In the technical scheme, the nail pushing and binding device comprises a nail pushing main plate, a nail pushing tongue, a bag clamping plate, a bag clamping cylinder, a nail pushing cylinder, a nail pushing connecting block and a limiting block.

[0034] The extension end of the nail pushing cylinder is hinged to the nail pushing connecting block; the nail pushing connecting block is installed at the lower end of the nail pushing main plate; the nail pushing tongue is assembled on the nail pushing connecting block; the nail pushing tongue can slide forward and backward in the slot of the nail pushing main plate along with the forward and backward movement of the nail pushing connecting block.

[0035] The nail pushing connecting block is connected with the shaft of the nail pushing cylinder through a Y-shaped joint; the tail of the nail pushing connecting block is provided with a groove structure; the groove structure of the tail of the nail pushing connecting block can move forward and backward in the slot of the nail pushing main plate.

[0036] The limiting block is installed at the lower end of the nail pushing main plate.

[0037] The extension end of the bag clamping cylinder is connected with the bag clamping plate; the bag clamping plate is connected with the nail pushing main plate; the assembly process of the nail pushing and binding device is simplified, the structure of the nail pushing and binding device is simplified, the nail pushing is more direct, and the structure is more stable; meanwhile, the bag clamping angle and structure of the bag clamping plate are optimized, the bag clamping is more stable, and the situation that the bag clamping is only half or not clamped is avoided, so that the binding failure is avoided.

[0038] ​In the above technical solution, the upper and lower ends of the bagging device are both provided with a pair of photoelectric sensors; the uppermost photoelectric sensor is used to detect whether the bag is successfully dropped after being sealed, and the lowermost photoelectric sensor is used to detect whether the bag has been rolled off from the bagging device (as shown in Figure 2 ).

[0039] Compared with the prior art, the present application has the following advantages:

[0040] (1) The whole mechanism is part of the fully automatic bagging and sealing integrated machine, which can truly realize automatic operation, and the sealing mechanism does not need the participation and assistance of personnel in the production process, and can independently supply nails and intermittently inject oil;

[0041] (2) An intelligent control system is added, and magnetic sensors and photoelectric sensors are added to each movement mechanism to monitor and control the operation of the mechanism, which can accurately feedback the running state of the equipment and warn the fault position (the present application feedbacks the running state of the equipment through the signals of the magnetic sensors on all the cylinders, the photoelectric sensors on the mechanism and the inductive proximity sensors, and warns the fault position), which assists workers in troubleshooting to ensure production;

[0042] (3) For the situation of nail sticking and bag sticking, especially for the nail feeding device and the nail pushing device, the nail feeding mechanism is simplified and optimized by adding a nail chain guide slide box nail chain guide device, which can ensure that the nails smoothly descend without any deviation and overturning; the nail pushing device uses a swing type jaw mechanism to complete the automatic nail pushing process through simplified structure, thereby solving the problem of bag sticking;

[0043] (4) The components that can be contacted by the bag during the movement of the bag are optimized to prevent damage caused by abnormal swinging and falling of the bag: when the bag is moved to the nail pushing position, the bag standing mechanism is lowered at the same time to prepare to receive the falling of the next bag, and the bag stabilizing brush at the lower part of the buffer cylinder will be raised upward to top the bottom of the bag, preventing the bag from swinging too much, and then the bag blocking cylinder is extended, and when the bag swings less, the sealing bag blocking plate can just block the bag, thereby further preventing the bag from swinging forward and backward, and the cylinder of the bag pushing device and the small brush on the bagging device can also limit the forward and backward swinging of the bag, so that the originally uncontrollable bag can be effectively controlled under the cooperation of the devices, preventing damage caused by abnormal swinging and falling of the bag;

[0044] (5) A cylinder buffer device is added, and when the bag standing mechanism is lowered, the cylinder of the buffer device will enter a pressure relief state before the bag falls, at which time the cylinder shaft is extended but the internal pressure is in a compressible low pressure state, similar to a soft compression spring, which can effectively buffer the speed of the bag when it falls, and the bag falls without scattering material; the problem of scattering material caused by the hard board contacting the bag and the bag opening is solved. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 Positioning drawing of the full-automatic edible mushroom notching mechanism in the full-automatic bagging and notching integrated machine;

[0046] Figure 2 Positioning drawing of each component of the full-automatic edible mushroom notching mechanism;

[0047] Figure 3 Structure drawing of the bag erecting device;

[0048] Figure 4 Structure drawing of the bag grabbing and moving device;

[0049] Figure 5 Structure drawing of the nail feeding and oil supplying device;

[0050] Figure 6 Structure drawing of the gear nail feeding and nail chain guiding device in the nail feeding device;

[0051] Figure 7 Structure drawing of the nail pushing and notching device;

[0052] Figure 8 Structure drawing of the bag blocking device.

[0053] In the drawing, 1 is a bag erecting device, 2 is an electromagnetic valve mounting panel, 3 is a bag grabbing and moving device, 4 is a bag pushing device, 5 is a nail feeding and oil supplying device, 6 is a nail pushing and notching device, 7 is a bag blocking device, 8 is a bag discharging device, 10 is a mushroom bag, 11 is a pair of sensors, 12 is a cylinder buffer device, 13 is a bag stabilizing brush, 14 is a bag erecting base, 15 is a bag erecting rotary bearing seat, 16 is a bag erecting cylinder mounting main plate, 17 is a bag erecting cylinder, 18 is a bag erecting slide plate, 30 is a bag moving main plate, 31 is a jaw moving main plate, 32 is a double-stroke cylinder, 33 is a bag moving cylinder, 34 is a bag moving shaft, 35 is a jaw rotating shaft, 36 is a jaw cylinder, 37 is a jaw mechanism, 38 is a jaw spring, 39 is a jaw swing buffer limiting pad, 50 is a nail rack, 51 is a nail chain guiding device, 52 is a nail chain slide plate, 53 is a buckle mounting and adjusting block, 54 is an electric lubricating oil pump, 55 is a speed regulating motor, 510 is a nail feeding gear, 511 is an inductive proximity sensor, 512 is a nail chain guiding plate, 513 is a nail chain guiding conical block, 514 is a pressing roller, 515 is a nail chain, 60 is a nail pushing main plate, 61 is a nail pushing tongue, 62 is a bag clamping plate, 63 is a bag clamping cylinder, 64 is a nail pushing cylinder, 65 is a nail pushing connecting block, 66 is a limiting block, 70 is a notching bag blocking plate, 71 is a bag grabbing bag blocking plate, 72 is a guiding shaft, 73 is a bag blocking cylinder, and 74 is a bag blocking device mounting plate. DETAILED DESCRIPTION

[0054] The embodiments of the present application will be described in detail below with reference to the drawings, but they do not constitute a limitation to the present application, and are only examples. Meanwhile, the advantages of the present application are made more clear and easy to understand through the description.

[0055] Since the full-automatic edible mushroom sealing mechanism is part of the full-automatic bagging and sealing integrated machine, during the working process, the mushroom bag will fall from the bagging mechanism cylinder of the full-automatic bagging and sealing integrated machine, and drop into the bag erecting device 1, the bag erecting device 1 will erect the mushroom bag, which is blocked by the bag blocking device 7, and is grabbed by the bag grabbing and moving device 3, and the clamping jaw mechanism 37 completes the pressing action to press the bag opening, at the same time, the bag blocking device 7 is retracted, the mushroom bag is moved to the push pin sealing device 6, the bag opening is clamped by the bag clamping plate 62, the push pin sealing device completes the sealing, at the same time, the bag clamping plate 62 is opened, and the mushroom bag is pushed down by the bag pushing device 4, and is rolled out from the bag discharging device 8 to the conveying belt, thus the whole sealing process is completed.

[0056] The working principle and control method of the present application are as follows:

[0057] The control method is as follows:

[0058] The full-automatic edible mushroom sealing mechanism of the present application is equipped with an electromagnetic sensor or a proximity switch to monitor and control the operation of each cylinder and the movement mechanism, and the running state monitoring and control interface will also be provided on the main screen, which can accurately feedback the equipment running state, warn the fault position, assist the workers in troubleshooting to ensure production;

[0059] The working principle is as follows:

[0060] After the mushroom bag 10 slides down from the bagging mechanism cylinder of the full-automatic bagging and sealing integrated machine, the first against sensor 11 will receive the information to the PLC, the PLC will control the electromagnetic valve to delay the start of the bag erecting cylinder 17 to complete the bag erecting action, (before preparing to accept the mushroom bag, the cylinder buffer device 12 will enter the overflow valve pressure relief state in advance, i.e. the buffer state) before the bag erecting cylinder 17 starts, the mushroom bag will first fall on the buffer pad of the bag erecting cylinder buffer device 12, and the mushroom bag is rapidly decelerated to 0, which requires that the mushroom bag cannot be scattered during the falling process, when the bag erecting cylinder 17 starts, the buffer cylinder of the cylinder buffer device 12 will also start synchronously, after completing the buffer action, the buffer cylinder is completely retracted, so that the height of the mushroom bag opening is kept consistent, and the consistency of the sealing position height is ensured.

[0061] After the bag is erected, it will be temporarily fixed vertically between the bag erecting and sliding plate 18 and the bag grabbing and blocking plate 70. At this time, the electromagnetic sensor on the extended end of the bag erecting cylinder 17 receives a signal, the clamping jaw cylinder 36 is extended, the clamping jaw mechanism 37 completes the bag grabbing action, and the double stroke cylinder 32 starts to drive the clamping jaw mechanism 37 to press down, while the buffer cylinder of the cylinder buffer device lifts the bottom of the bag, both of which complete the compaction of the bacteria in the bag, making the bag further compact. After the pressing down is completed, the double stroke cylinder 32 returns to the middle stroke position, and the blocking cylinder 73 of the bag blocking device 7 is retracted, the bag moving device 3 completes the bag moving action under the action of the moving cylinder 33, (during this process until the bag is closed, the clamping jaw mechanism 17 will always hold the bag opening) and the bag erecting cylinder 17 returns to the original position, ready to receive the next bag.

[0062] After the bag is moved, the bag blocking cylinder 73 of the bag blocking device 7 is extended again, (the bag blocking plate 71 has a beveled front end, which will not cause damage to the bag, but will only rub along the surface of the bag, then block the bag to prevent it from shaking) the bag blocking plate 71 can just limit the bag from three sides with the pushing plate of the bag pushing device 4, to prevent the bag from shaking left and right, and the clamping plate 62 of the bag clamping device 6 is pushed by the clamping cylinder 63 to clamp the bag opening, at this time, the clamping plate 62, the clamping jaw mechanism 37 and the main plate 60 of the push pin device fix the bag opening from five directions, and the middle section of the bag is limited from three sides, basically achieving no large shaking when the bag is closed. Then, the clamping jaw mechanism 37 is lifted by the double stroke cylinder 32 to complete the tightening of the bag opening, and the double stroke cylinder is lifted to the position, the push pin cylinder 64 is extended, the push pin connecting block 65 is driven by the push pin to move to the limiting block 66 to complete the push pin action, and finally the aluminum nail is completed at the pinning module at the front end of the main plate 60. After the push pin cylinder 64 is retracted, the clamping plate 62 is opened, and after the aluminum buckle of the bag is pulled out of the slot of the pinning module (see details), the clamping jaw mechanism 37 is opened (the clamping jaw mechanism 37 has an opening delay, slower than the clamping plate 62), and the bag will naturally fall onto the bag receiving platform of the bag discharging device 8, and the bag pushing device 4 will start the pushing action after the bag is stable, and the bag will be smoothly turned over onto the bag discharging device 8, and finally rolled out and dropped onto the conveyor belt. Each bag will go through this process.

[0063] After the pin pushing is completed, the pin chain 515 pressed by the pressing roller 514 will move a pin width under the drive of the pin feeding gear 510, (the speed of the speed regulating motor 55 can be adjusted to adapt to the pin feeding rhythm under different working conditions) the pin chain guide plate 512 and the pin chain guide conical block 513 play the role of guiding the pin to prevent the pin chain from deviating and causing pin jamming. This pin feeding process is performed once after each pin pushing is completed. The inductive proximity sensor 511 receives the signal of the pin chain and automatically alarms when there is no pin, prompting to replace the pin disc buckle.

[0064] The lubricating oil filling is controlled by the electric lubricating oil pump 54, and the lubricating oil is filled into the lower nail groove of the nail main plate 60, and the filling is performed every A minutes, and the filling time is B seconds, so that the groove of the nail main plate 60 and the nail tongue 61 are lubricated, and the nail and the mouth are more smooth and smooth.

[0065] The above is the working principle of the full-automatic edible mushroom mouth mechanism.

[0066] After the nail is closed, the nail may be stuck in the module groove, so the clamping jaw mechanism 37 is designed to swing (as shown in Figure 4 The clamping jaw spring 38 and the clamping jaw mechanism 37 are reset by the gravity, that is, when the nail cylinder 64 is extended to complete the nail, the clamping jaw mechanism 37 will swing and deviate from the vertical position with the mouth of the bag, and when the bag cylinder 62 is opened, the bag aluminum buckle will be dragged out of the nail module groove by the clamping jaw mechanism 37, and then the clamping jaw mechanism 37 will be opened, so that the bag is not stuck on the nail main plate 60.

[0067] The other parts not described belong to the prior art.

Claims

1. A fully automatic mushroom sealing mechanism, characterized in that: The bag erecting device (1), the electromagnetic valve mounting panel (2), the bag grabbing and moving device (3), the bag pushing device (4), the nail feeding and oil supplying device (5), the nail pushing and mouth closing device (6), the bag blocking device (7) and the bag discharging device (8) are included. The electromagnetic valve mounting panel (2) is mounted on the frame. The nail feeding and oil supplying device (5) is located at the upper part of the frame. The bag grabbing and moving device (3) is located at the middle part of the frame and at the side of the nail feeding and oil supplying device (5). The bag pushing device (4) is located at the lower part of the frame and below the bag grabbing and moving device (3). The nail pushing and mouth closing device (6) is located at the middle part of the frame and at the side of the bag grabbing and moving device (3). The bag blocking device (7) is mounted at the middle part of the frame and below the bag grabbing and moving device (3). The bag discharging device (8) is located at the lower part of the frame and at the side of the bag pushing device (4). The bag erecting device (1) is located at the lower part of the frame and at the side of the bag pushing device (4). The cylinder buffering device (12) is arranged on the bag erecting device (1).

2. The full-automatic mushroom pricking mechanism according to claim 1, characterized in that: The bag erecting device (1) includes the opposite radiation sensor (11), the bag stabilizing brush (13), the bag erecting base (14), the bag erecting rotary bearing seat (15), the bag erecting cylinder mounting main plate (16), the bag erecting cylinder (17) and the bag erecting sliding plate (18). One end of the bag erecting cylinder (17) is connected with the middle part of the outer side of the bag erecting sliding plate (18), and the other end is connected with the bag erecting cylinder mounting main plate (16). The lower end of the outer side of the bag erecting sliding plate (18) is connected with the bag erecting base (14) through the bag erecting rotary bearing seat (15). The cylinder buffering device (12) is located at the lower end of the inner side of the bag erecting sliding plate (18). The opposite radiation sensor (11) is mounted on both sides of the middle segment of the bag erecting sliding plate (18) and connected with the electromagnetic valve mounting panel (2). The bag stabilizing brush (13) is mounted on the cylinder bottom of the cylinder buffering device (12).

3. The full-automatic mushroom pricking mechanism according to claim 2, characterized in that: The nail feeding and oil supplying device (5) includes the nail rack (50), the nail chain guide device (51), the nail chain sliding plate (52), the buckle mounting adjusting block (53), the electric lubricating oil pump (54) and the speed regulating motor (55). The nail rack (50) is mounted on the middle part of the frame and directly above the nail pushing and mouth closing device (6). The nail chain guide device (51) is located between the nail chain sliding plate (52) and the nail rack (50). The buckle mounting adjusting block (53) is located at the side of the buckle. The speed regulating motor (55) is located at the side of the nail rack (50) and connected with the nail feeding gear (510) of the nail chain guide device (51). The electric lubricating oil pump (54) is located at the side of the nail rack (50).

4. The full-automatic mushroom pricking mechanism according to claim 3, characterized in that: The nail chain guide device (51) includes the nail feeding gear (510), the inductive proximity sensor (511), the nail chain guide plate (512), the nail chain guide conical block (513), the pressing roller (514) and the nail chain (515). The nail feeding gear (510) and the pressing roller (514) are both mounted on the nail rack (50) and oppositely arranged on both sides of the nail chain (515). The nail chain guide plate (512) is located on the nail chain sliding plate (52) and above the nail feeding gear (510). The nail chain guide cone block (513) is located above the compression roller (514); one end of the nail chain guide cone block (513) is hinged to the nail chain guide plate (512), and the other end is abutted against the inner side of the nail chain (515); The inductive proximity sensor (511) is located on the nail rack (50) and above the side of the nail feeding gear (510); the inductive proximity sensor (511) is connected with the electromagnetic valve mounting panel (2).

5. The full-automatic mushroom pricking mechanism according to claim 4, characterized in that: The nail pushing and lacing device (6) comprises a nail pushing main plate (60), a nail pushing tongue (61), a bag clamping plate (62), a bag clamping cylinder (63), a nail pushing cylinder (64), a nail pushing connecting block (65) and a limiting block (66); The telescopic end of the nail pushing cylinder (64) is hinged to the nail pushing connecting block (65); the nail pushing connecting block (65) is installed at the lower end of the nail pushing main plate (60); the nail pushing tongue (61) is assembled on the nail pushing connecting block (65); The nail pushing connecting block (65) is connected with the shaft of the nail pushing cylinder (64) through a Y-shaped joint, and a groove structure is arranged at the tail of the nail pushing connecting block (65); The limiting block (66) is installed at the lower end of the nail pushing main plate (60); the telescopic end of the bag clamping cylinder (63) is connected with the bag clamping plate (62); the bag clamping plate (62) is connected with the nail pushing main plate (60).

6. The full-automatic mushroom pricking mechanism according to claim 5, characterized in that: The upper and lower ends of the bag discharging device (8) are both installed with a pair of photoelectric sensors.

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