Bag opening shrinking and ring sleeving rear bag opening arranging device for fungus bags

Abstract

The utility model discloses a bag opening shrinking and ring sleeving rear bag opening arranging device for fungus bags, which comprises an upper seat plate, a lower seat plate, an upper movable plate and a lower movable plate which are parallel to one another, and further comprises a plurality of outer deflector rods and a plurality of inner deflector rods, an upper cylinder is arranged on the upper seat plate; a lower cylinder is arranged below the upper seat plate; a plurality of upper hinge seats are arranged on the lower seat plate, a plurality of lower hinge seats are arranged under the lower seat plate, the upper cylinder drives the upper movable plate to move up and down, and the lower cylinder drives the lower movable plate to move up and down; when the lower movable plate moves downwards, the lower parts of the plurality of inner deflector rods are simultaneously retracted inwards to be close to each other to form a bundle of cylindrical bodies; when the upper movable plate moves downwards, the lower parts of the plurality of outer driving levers simultaneously and inwards drive the bag opening of the fungus bag matched with the columnar body to contract; when the upper movable plate moves upwards, the lower parts of the plurality of outer driving levers are unfolded outwards at the same time to return; and when the lower movable plate moves upwards, the lower parts of the plurality of inner deflector rods are unfolded outwards at the same time. The utility model has the advantages of simple control, reliable action, better repeatability and lower integral manufacturing cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to edible mushroom production equipment manufacturing technical field especially a bag mouth contraction and sleeve ring post bag mouth arrangement device of mushroom bag. BACKGROUND

[0002] Now, in the process of factory cultivation of edible mushrooms, as shown in a bag of mushroom bag 10 filled with edible mushroom cultivation material 101 still needs to shrink the bag mouth and then sleeve the sleeve ring 20, and then open and arrange the bag mouth, and the state after sleeving the sleeve ring 20 and arranging the bag mouth is as shown in Figure 1 Figure 2

[0003] The traditional sleeve ring and bag mouth arrangement operation is completed by hand, which is not only low in efficiency, but also high in labor intensity, and cannot adapt to the existing factory production demand. Therefore, the applicant has disclosed a Chinese invention application with application number 201710006071.6 and the name of "full-automatic sleeve ring device for edible mushroom cultivation bag" on May 24, 2017, which includes a track, a four-jaw mounting seat arranged on the track, and a ring clamping sleeve ring seat. The four-jaw mounting seat is provided with a servo motor, the servo motor is connected with a four-jaw rod, and the four-jaw rod is in the shape of a four-jaw when it is driven by the servo motor to open, and is in the shape of a rod when it is closed. The four-jaw mounting seat is also provided with a bearing seat and a trapezoidal tooth synchronous belt wheel for synchronous transmission between the servo motor and the four-jaw rod. The ring clamping sleeve ring seat is provided with a ring clamping clamp and a ring feeding mechanism. The longitudinal center line of the four-jaw rod corresponds to the center of the ring hole of the ring clamping clamp and the center of the bag mouth of the cultivation bag in sequence. The air cylinder is fixed below the ring clamping sleeve ring seat. The device greatly improves the production efficiency in the whole production process of sleeving the sleeve ring. However, the control of such a device is relatively complex, and the action repeatability, action reliability and manufacturing cost need to be optimized. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the utility model is to provide a bag mouth contraction and sleeve ring post bag mouth arrangement device of mushroom bag, which is simple in control, reliable in action, good in repeatability, and low in overall manufacturing cost.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a bag mouth contraction and sleeve ring post bag mouth arrangement device of mushroom bag, which comprises mutually parallel upper seat plates, lower seat plates, upper movable plates, lower movable plates, a plurality of outer prying rods and a plurality of inner prying rods, the upper movable plates are located above the upper seat plates, and the lower movable plates are located between the upper seat plates and the lower seat plates.

[0006] The upper seat plates are provided with upper air cylinders, the upper air cylinders are connected with the upper movable plates and drive the upper movable plates to move up and down, and the lower seat plates are provided with lower air cylinders, the lower air cylinders are connected with the lower movable plates and drive the lower movable plates to move up and down.

[0007] ​​The upper surface of the lower seat plate is provided with a plurality of upper hinge seats, and the lower surface of the lower seat plate is provided with a plurality of lower hinge seats;

[0008] A plurality of first connecting seats are arranged at intervals near the edges of the upper movable plate, each first connecting seat is hingedly connected to the upper end of a first connecting rod, the lower end of the first connecting rod is hingedly connected to one side of the upper part of an outer push rod, the other side of the upper part of the outer push rod is hingedly connected to one of the upper hinge seats, and the lower part of the outer push rod is located below the lower seat plate;

[0009] A plurality of second connecting seats are arranged at intervals near the edges of the lower movable plate, each second connecting seat is hingedly connected to the upper end of a second connecting rod, the lower end of the second connecting rod is hingedly connected to the upper part of an inner push rod, the middle part of the inner push rod is hingedly connected to one of the lower hinge seats, and the lower part of the inner push rod is located below the lower seat plate;

[0010] When the lower movable plate moves downward, the lower parts of the plurality of inner push rods simultaneously retract and approach each other to form a columnar body, the columnar body can pass through the sleeve ring and be inserted into the bag; when the upper movable plate moves downward, the lower parts of the plurality of outer push rods simultaneously push inward to cooperate with the columnar body to shrink the bag opening of the bag; when the upper movable plate moves upward, the lower parts of the plurality of outer push rods simultaneously expand outward to return; when the lower movable plate moves upward, the lower parts of the plurality of inner push rods simultaneously expand outward.

[0011] Preferably, the outer push rods and the inner push rods are each six, and the upper hinge seats, the lower hinge seats, the first connecting seats, and the second connecting seats are each six. In this way, the bag opening of the bag can be better shrunk by the lower parts of the six outer push rods simultaneously pushing inward to cooperate with the columnar body, and the bag opening of the bag can be better opened and arranged by the six inner push rods simultaneously expanding outward and moving downward.

[0012] Preferably, the plurality of upper hinge seats, the plurality of lower hinge seats, the plurality of first connecting seats, and the plurality of second connecting seats are uniformly arranged around the central axis of the columnar body. This makes the structure more reasonable and compact.

[0013] Preferably, each first connecting seat is arranged downwardly inclined with respect to the upper movable plate, and each second connecting seat is arranged downwardly inclined with respect to the lower movable plate. This facilitates the hingedly connecting of the first connecting seat to the upper end of the first connecting rod and the hingedly connecting of the second connecting seat to the upper end of the second connecting rod.

[0014] Preferably, each inner push rod comprises a horizontal part, a vertical part, and an inclined part, the upper end of the vertical part is connected to one end of the horizontal part, the other end of the horizontal part is connected to the lower end of the inclined part, the middle position of the horizontal part is hingedly connected to the lower hinge seat, and the upper end of the inclined part is hingedly connected to the lower end of the second connecting rod.

[0015] Each of the outer dialing rods comprises a long strip-shaped middle part, a tail part connected with the lower end of the long strip-shaped middle part and inclined outward, and a head part connected with the upper end of the long strip-shaped middle part and inclined inward, and a dialing claw extending inward to dial the bag opening of the bacteria bag is arranged on the tail part, the outer side of the head part is hinged with the lower end of the first connecting rod, and the inner side of the head part is hinged with the upper hinge seat. The inner dialing rod and the outer dialing rod of the structure can cooperate to more reliably complete the required action.

[0016] Further improvement, the lower part of the vertical part of each inner dialing rod is provided with an arc-shaped outer peripheral surface, so that the lower part of the columnar body forms a cylindrical surface; the lower part of the vertical part of each of the inner dialing rods is provided with a matching clamping tooth on both sides, and the vertical parts of the two adjacent inner dialing rods can be matched through the matching clamping teeth. In this way, on the one hand, the vertical parts of the two adjacent inner dialing rods can be combined and positioned more accurately by approaching each other, and on the other hand, the columnar body with the cylindrical lower part can be more easily separated from the sleeve ring.

[0017] Further improvement, the lower part of the vertical part of each of the inner dialing rods is provided with a notch on both sides, the corresponding notches of the vertical parts of the two adjacent inner dialing rods form a giving slot, and the dialing claw can be inserted into the corresponding giving slot when the lower part of the outer dialing rod is dialing inward. In this way, on the one hand, the dialing claw can bring part of the bag opening of the bacteria bag into the columnar body, so that the bag opening of the bacteria bag is more ideally contracted and more convenient for the sleeve ring to be sleeved; on the other hand, through the giving effect of the giving slot, the bag opening of the bacteria bag will not be brought out when the outer dialing rod is unfolded outward and returned, effectively improving the reliability of the action.

[0018] Further improvement, the dialing claw on the tail part of each of the outer dialing rods comprises an upper dialing claw and a lower dialing claw, the upper dialing claw and the lower dialing claw are perpendicular to the tail part, the corresponding notches of the vertical parts of the two adjacent inner dialing rods form an upper giving slot and a lower giving slot, and when the lower part of the outer dialing rod is dialing inward to the position, the upper dialing claw is inserted into the corresponding upper giving slot, and the lower dialing claw is inserted into the corresponding lower giving slot. In this way, the bag opening of the bacteria bag can be more contracted.

[0019] Further improvement, the lower seat plate is provided with a plurality of first giving through holes and a plurality of second giving through holes, each outer dialing rod passes through a first giving through hole, and each inner dialing rod passes through a second giving through hole. In this way, the structure is convenient to set, the structure is more compact, and it is convenient for the lower seat plate to be connected with other mechanisms to avoid mutual interference.

[0020] Further improvement, the upper seat plate and the lower seat plate are fixedly connected through a plurality of vertical rods. The upper seat plate and the lower seat plate are fixedly connected together, and the structural strength is increased.

[0021] Preferably, the lower seat plate and / or the upper seat plate is connected with a driving mechanism and is driven by the driving mechanism to move up and down. In this way, the whole device can work better.

[0022] This invention utilizes a lower cylinder to move the lower movable plate downwards, causing the lower parts of multiple inner levers to simultaneously retract and converge, forming a columnar bundle. This columnar bundle facilitates the passage of the collar and insertion into the mushroom bag. When the upper cylinder moves the upper movable plate downwards, the lower parts of multiple outer levers simultaneously move inwards, cooperating with the columnar bundle to shrink the mushroom bag opening. Then, when the upper cylinder moves the upper movable plate upwards, the lower parts of the outer levers simultaneously unfold outwards, allowing the collar to be fitted onto the mushroom bag opening. Finally, when the lower cylinder moves the lower movable plate upwards, the lower parts of the inner levers simultaneously unfold outwards, allowing the mushroom bag opening to be opened and arranged. Therefore, the desired actions can be completed by controlling the movements of the upper and lower cylinders, making control very simple. Furthermore, the movement of the lower cylinder simultaneously drives the movement of multiple inner levers via the lower movable plate, and the movement of the upper cylinder simultaneously drives the movement of multiple outer levers via the upper movable plate, ensuring reliable overall operation and good repeatability.

[0023] Secondly, this device does not require expensive components such as motors and servo control systems, resulting in lower overall manufacturing costs and better maintainability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a mushroom bag containing edible mushroom cultivation substrate;

[0025] Figure 2 This is a diagram showing the mushroom bag after the opening has been looped and the bag has been turned inside out and tidied up.

[0026] Figure 3 This is a perspective view of the utility model;

[0027] Figure 4 This is the front view of this utility model;

[0028] Figure 5 This is a bottom view of the present invention;

[0029] Figure 6 yes Figure 3 Enlarged view of point A;

[0030] Figure 7 This is a perspective view of the inner lever of this utility model;

[0031] Figure 8 This is a perspective view of the external lever of this utility model;

[0032] Figure 9 This is a schematic diagram showing that the lower parts of all the inner levers of this utility model simultaneously retract inward, move closer to each other, pass through the collar, and are inserted into the mushroom bag;

[0033] Figure 10 Is Figure 9 A schematic diagram showing the lower part of all the inner levers expanding outwards simultaneously.

[0034] Figure 11 This is a schematic diagram of how the lower parts of all the inner levers of this utility model retract inwards and move closer to each other, while the lower parts of all the outer levers simultaneously move inwards to shrink the opening of the mushroom bag.

[0035] Figure 12 This is a schematic diagram of all the external levers of this utility model unfolding outwards and then the loop is inserted into the opening of the mushroom bag;

[0036] Figure 13 This is a schematic diagram showing the bottom of all the inner levers of this utility model unfolding outwards to open the mushroom bag opening for sorting;

[0037] Figure 14 This diagram illustrates how a conveyor mechanism drives the mushroom bag to move intermittently, then all the lower parts of the inner levers simultaneously retract inwards, come together, pass through another collar, and insert into another mushroom bag. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0039] Figures 1 to 9 As shown, a bag mouth shrinking and ring-looping device for mushroom bags includes an upper seat plate 1, a lower seat plate 2, an upper movable plate 5, and a lower movable plate 6 that are parallel to each other. The upper movable plate 5 is located above the upper seat plate 1, and the lower movable plate 6 is located between the upper seat plate 1 and the lower seat plate 2. An upper cylinder 7 is mounted on the upper seat plate 1, which is connected to the upper movable plate 5 and drives the upper movable plate 5 to move up and down. A lower cylinder 8 is mounted below the upper seat plate 1, which is connected to the lower movable plate 6 and drives the lower movable plate 6 to move up and down. Specifically, the housing of the upper cylinder 7 is fixedly connected to the upper seat plate 1, and the piston rod of the upper cylinder 7 is connected to the upper movable plate 5. The housing of the lower cylinder 8 is fixedly connected to the upper seat plate 1, and the piston rod of the lower cylinder 8 is connected to the lower movable plate 6.

[0040] The lower seat plate 2 has six upper hinge seats 21 on its upper surface and six lower hinge seats 22 on its lower surface.

[0041] This device also includes six outer levers 3 and six inner levers 4. Six first connecting seats 51 are spaced apart near the edge of the upper movable plate 5. Each first connecting seat 51 is hinged to the upper end of the first connecting rod 52. The lower end of the first connecting rod 52 is hinged to one side of the upper part of an outer lever 3. The other side of the upper part of the outer lever 3 is hinged to one of the upper hinge seats 21. The lower part of the outer lever 3 is located below the lower seat plate 2. In this embodiment, each first connecting seat 51 is simultaneously hinged to the upper ends of two first connecting rods 52, and the lower ends of two first connecting rods 52 are simultaneously hinged to one side of the upper part of an outer lever 3.

[0042] Six second connecting seats 61 are spaced apart near the edge of the lower movable plate 6. Each second connecting seat 61 is hinged to the upper end of the second connecting rod 62, and the lower end of the second connecting rod 62 is hinged to the upper part of an inner lever 4. The middle part of the inner lever 4 is hinged to a lower hinge seat 22, and the lower part of the inner lever 4 is located below the lower seat plate 2. In this embodiment, each second connecting seat 61 is simultaneously hinged to the upper ends of two second connecting rods 62, and the lower ends of two second connecting rods 62 are simultaneously hinged to the upper part of an inner lever 4.

[0043] When the lower movable plate 6 moves downward, the lower parts of the six inner levers 4 simultaneously retract inward and converge to form a bundle of columnar bodies 40. These columnar bodies 40 can pass through the collar 20 and be inserted into the mushroom bag 10. When the upper movable plate 5 moves downward, the lower parts of the six outer levers 3 simultaneously move inward to cooperate with the columnar bodies 40, shrinking the opening of the mushroom bag 10. When the upper movable plate 5 moves upward, the lower parts of the six outer levers 3 simultaneously extend outward to return to their original position. When the lower movable plate 6 moves upward, the lower parts of the six inner levers 4 simultaneously extend outward. By simultaneously extending the lower parts of multiple inner levers 4 outward, the opening of the mushroom bag can be opened and arranged.

[0044] There are six upper hinge seats 21, six lower hinge seats 22, six first connecting seats 51, and six second connecting seats 61; the six upper hinge seats 21, six lower hinge seats 22, six first connecting seats 51, and six second connecting seats 61 are all evenly arranged around the central axis a of the columnar body 40.

[0045] Each of the first connecting seats 51 is inclined downward relative to the upper movable plate 5; each of the second connecting seats 61 is inclined downward relative to the lower movable plate 6.

[0046] Each inner lever 4 includes a horizontal part 41, a vertical part 42, and an inclined part 43. The upper end of the vertical part 42 is connected to one end of the horizontal part 41, and the other end of the horizontal part 41 is connected to the lower end of the inclined part 43. The middle position of the horizontal part 41 is hinged to the lower hinge seat 22, and the upper end of the inclined part 43 is hinged to the lower end of the second connecting rod 62. The horizontal part 41, the vertical part 42, and the inclined part 43 of each inner lever 4 are integrally formed.

[0047] Each of the outer levers 3 includes a long strip-shaped middle section 31, with an outwardly inclined tail section 32 connected to the lower end of the long strip-shaped middle section 31 and an inwardly inclined head section 33 connected to the upper end of the long strip-shaped middle section 31. The tail section 32 is provided with claws that extend inward to actuate the opening of the mushroom bag 10. The claws on the tail section 32 of each outer lever 3 include an upper claw 321 and a lower claw 322, which are perpendicular to the tail section 32. The outer side of the head section 33 is hinged to the lower end of the first connecting rod 52, and the inner side of the head section 33 is hinged to the upper hinge seat 21. The long strip-shaped middle section 31, tail section 32, and head section 33 of each outer lever 3 are integrally formed.

[0048] Each of the inner levers 4 vertical sections 42 has an arc-shaped outer peripheral surface 421 at its lower part, so that the lower part of the columnar body 40 forms a cylindrical surface; each of the inner levers 4 vertical sections 42 has a mating tooth 422 on both sides of its lower part, and two adjacent inner levers 4 vertical sections 42 can be mated by the mating tooth 422.

[0049] Each of the inner levers 4 has two notches 423 on both sides of its lower vertical part 42. The corresponding notches 423 of two adjacent inner levers 4 form an upper clearance groove 424 and a lower clearance groove 425. When the lower part of the outer lever 3 is moved inward to the position, the upper pawl 321 is inserted into the corresponding upper clearance groove 424, and the lower pawl 322 is inserted into the corresponding lower clearance groove 425.

[0050] The upper seat plate 1 and the lower seat plate 2 are fixedly connected by four vertical rods 23. The lower seat plate 2 is provided with six first clearance through holes 24 and six second clearance through holes 25. Each outer lever 3 passes through one first clearance through hole 24, and each inner lever 4 passes through one second clearance through hole 25.

[0051] The lower seat plate 2 and / or the upper seat plate 1 are connected to a drive mechanism 30 and are driven by the drive mechanism 30 to move up and down. The drive mechanism 30 may be a cylinder with some connecting parts, or a motor, control system and transmission mechanism, etc.

[0052] The usage method of this embodiment is as follows:

[0053] Step 1: A mushroom bag 10, driven by the conveying mechanism 50, intermittently moves to a stop below the device. A plastic collar 20 clamps onto the clamping mechanism 60. The lower cylinder 8 actuates, causing the lower movable plate 6 to move downwards. Simultaneously, the lower parts of the six inner levers 4 retract inwards, converging to form a bundle of columnar bodies 40. Then, the drive mechanism 30 moves the entire device downwards. The columnar bodies 40 pass through the collar 20 clamped onto the clamping mechanism 60 and insert into the mushroom bag 10. All outer levers 3 are in an outward-extended state. Figure 9 As shown;

[0054] Step 2: With all outer levers 3 in the outward-extended position, the lower cylinder 8 actuates again, causing the lower movable plate 6 to move upward, and the lower parts of the six inner levers 4 simultaneously extend outward; as shown Figure 10 As shown; first, the lower parts of the six inner levers 4 are simultaneously extended outwards, and then the lower parts of all the outer levers 3 are simultaneously pushed inwards to cause the opening of the mushroom bag 10 to shrink, so that the opening of the mushroom bag 10 shrinks into a cone shape, which makes it easier for the loop 20 to be put down into the opening of the mushroom bag 10.

[0055] Step 3: The upper cylinder 7 moves the upper movable plate 5 downwards, and the lower parts of the six outer levers 3 simultaneously move inwards, causing the opening of the mushroom bag 10 to contract. Then, the lower cylinder 8 moves the lower movable plate 6 downwards, and the lower parts of the six inner levers 4 simultaneously retract inwards and converge to form a bundle of columnar bodies 40, so that the six outer levers 3 cooperate with the columnar bodies 40 to contract the opening of the mushroom bag 10. At this time, the upper claw 321 and lower claw 322 on each outer lever 3 bring part of the opening of the mushroom bag 10 into the columnar body 40, making it easier for the collar 20 to be inserted downwards into the opening of the mushroom bag 10. Figure 11 As shown;

[0056] Step 4: The upper cylinder 7 actuates again, causing the upper movable plate 5 to move upward. Simultaneously, the lower parts of all the outer levers 3 extend outward and return to their original positions. The clamping mechanism 60 moves the collar 20 downward, fitting the collar 20 onto the opening of the mushroom bag 10. Figure 12 As shown;

[0057] Step 5: The lower cylinder 8 actuates again, causing the lower movable plate 6 to move upward. Simultaneously, the lower parts of the six inner levers 4 unfold outward, opening the bag opening of the mushroom bag 10. Then, the clamping mechanism 60 releases the collar 20, and the driving mechanism 30 moves the entire device downward a short distance. The six inner levers 4 press down on the opened bag opening of the mushroom bag 10 for further adjustment, completing the shrinking of the bag opening, collar adjustment, and bag opening adjustment of one mushroom bag 10. Figure 13 As shown.

[0058] Step Six: The drive mechanism 30 moves the entire device upwards back to its original position, and the clamping mechanism 60 also moves upwards back to its original position to receive another collar 20. The next mushroom bag 10, driven by the conveying mechanism 50, moves intermittently to a stop below this device. The drive mechanism 30 then moves the entire device downwards again, and the columnar body 40 passes through another collar 20 clamped on the clamping mechanism 60 and inserts into another mushroom bag 10, preparing for the next mushroom bag 10's bag opening to shrink, collar, and bag opening to be tidied, entering the next cycle; the mushroom bag 10 that has completed bag opening shrinking, collar, and bag opening tidiness is removed by the conveying mechanism 50. Figure 14 As shown.

[0059] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A device for shrinking and ringing the opening of a mushroom bag, characterized in that: It includes an upper seat plate, a lower seat plate, an upper movable plate, and a lower movable plate that are parallel to each other, as well as multiple outer levers and multiple inner levers. The upper movable plate is located above the upper seat plate, and the lower movable plate is located between the upper seat plate and the lower seat plate. An upper cylinder is installed on the upper seat plate. The upper cylinder is connected to the upper movable plate and drives the upper movable plate to move up and down. A lower cylinder is installed under the upper seat plate. The lower cylinder is connected to the lower movable plate and drives the lower movable plate to move up and down. The lower seat plate has multiple upper hinge seats on its upper surface and multiple lower hinge seats on its lower surface. Multiple first connecting seats are spaced apart near the edge of the upper movable plate. Each first connecting seat is hinged to the upper end of the first connecting rod. The lower end of the first connecting rod is hinged to one side of the upper part of an outer lever. The other side of the upper part of the outer lever is hinged to one of the upper hinge seats. The lower part of the outer lever is located below the lower seat plate. Multiple second connecting seats are spaced apart near the edge of the lower movable plate. Each second connecting seat is hinged to the upper end of the second connecting rod. The lower end of the second connecting rod is hinged to the upper part of an inner lever. The middle part of the inner lever is hinged to one of the lower hinge seats. The lower part of the inner lever is located below the lower seat plate. When the lower movable plate moves downward, the lower parts of multiple inner levers simultaneously retract inward and converge to form a bundle of columnar bodies, which can pass through the collar and be inserted into the mushroom bag; when the upper movable plate moves downward, the lower parts of multiple outer levers simultaneously move inward to cooperate with the columnar bodies and shrink the opening of the mushroom bag; when the upper movable plate moves upward, the lower parts of multiple outer levers simultaneously extend outward to return to their original positions; when the lower movable plate moves upward, the lower parts of multiple inner levers simultaneously extend outward.

2. The device for shrinking and ringing the bag opening of a mushroom bag according to claim 1, characterized in that: There are six outer levers and six inner levers, and there are six upper hinge seats, six lower hinge seats, six first connecting seats, and six second connecting seats.

3. The device for shrinking and ringing the bag opening of a mushroom bag according to claim 1, characterized in that: The plurality of upper hinge seats, the plurality of lower hinge seats, the plurality of first connecting seats and the plurality of second connecting seats are all uniformly arranged around the central axis of the columnar body.

4. The device for shrinking and ringing the bag opening of a mushroom bag according to claim 1, characterized in that: Each of the first connecting seats is inclined downward relative to the upper movable plate; each of the second connecting seats is inclined downward relative to the lower movable plate.

5. The device for shrinking and ringing the bag opening of a mushroom bag according to claim 1, characterized in that: Each of the inner levers includes a horizontal part, a vertical part, and an inclined part. The upper end of the vertical part is connected to one end of the horizontal part, and the other end of the horizontal part is connected to the lower end of the inclined part. The middle position of the horizontal part is hinged to the lower hinge seat, and the upper end of the inclined part is hinged to the lower end of the second connecting rod. Each of the external levers includes a long strip-shaped middle section, a tail section connected to the lower end of the long strip-shaped middle section and inclined outward, and a head section connected to the upper end of the long strip-shaped middle section and inclined inward. The tail section is provided with a claw extending inward to actuate the opening of the mushroom bag. The outer side of the head is hinged to the lower end of the first connecting rod, and the inner side of the head is hinged to the upper hinge seat.

6. The device for shrinking and ringing the bag opening of a mushroom bag according to claim 5, characterized in that: Each of the inner levers has an arc-shaped outer circumference at its lower part, so that the lower part of the columnar body forms a cylindrical surface; each of the inner levers has mating teeth on both sides of its lower part, and two adjacent inner levers can be mated by the mating teeth.

7. The device for shrinking and ringing the bag opening of a mushroom bag according to claim 5, characterized in that: Each inner lever has notches on both sides of its lower vertical section. The corresponding notches of two adjacent inner levers form a clearance groove. When the lower part of the outer lever is moved inward, the pawl can be inserted into the corresponding clearance groove.

8. The device for shrinking and ringing the bag opening of a mushroom bag according to claim 7, characterized in that: The pawls on the tail of each outer lever include an upper pawl and a lower pawl, which are perpendicular to the tail. The corresponding notches on the vertical parts of two adjacent inner levers form an upper clearance groove and a lower clearance groove. When the lower part of the outer lever is moved inward to the position, the upper pawl inserts into the corresponding upper clearance groove, and the lower pawl inserts into the corresponding lower clearance groove.

9. The device for shrinking and ringing the bag opening of a mushroom bag according to claim 1, characterized in that: The lower seat plate is provided with multiple first clearance through holes and multiple second clearance through holes. Each outer lever passes through a first clearance through hole, and each inner lever passes through a second clearance through hole.

10. A bag opening shrinking and ring-fitting device for a mushroom bag according to any one of claims 1 to 9, characterized in that: The lower seat plate and / or upper seat plate are connected to a drive mechanism and are driven by the drive mechanism to move up and down.

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