Sweet potato packing device

Abstract

The utility model discloses a sweet potato packing device which comprises a storage box, a first conveying belt, a pressure switch mechanism and a packing mechanism, a storage cavity used for storing sweet potatoes is arranged in the storage box, and a blocking mechanism used for controlling the opening and closing of an outlet of the storage box is arranged on the outlet of the storage box. One end of the first conveying belt is located below the outlet of the storage box, and the other end is fixed to the top of the packaging mechanism. The pressure switch mechanism comprises a material guide opening and a supporting plate, the material guide opening is fixed to the top of the packaging mechanism and located below the top end of the first conveying belt, the supporting plate is installed on the packaging mechanism in a turnover mode, and a pressure sensor used for detecting the weight of sweet potatoes in the material guide opening is arranged on the supporting plate. The pressure sensor, the first conveying belt and the blocking mechanism are all electrically connected to the equipment electric cabinet. The sweet potato packing device solves the problems that an existing device depends on manual weighing and manual feeding, and packing efficiency is low.

Description

Technical Field

[0001] The utility model relates to the technical field of sweet potato packaging, in particular to a sweet potato packaging device. Background Art

[0002] In the prior art, the utility model patent with publication number CN213769068U discloses a sweet potato peeling automatic packaging device including a feed inlet, the lower end of the feed inlet is fixedly connected with an arranging component for arranging, the lower surface of the feed inlet is fixedly connected to the upper surface of the packaging box, the interior of the packaging box is provided with a packaging component for packaging, the upper surface of the inner wall of the packaging box is fixedly connected with a hydraulic rod, and the lower surface of the hydraulic rod is fixedly connected with a suture block. However, although the sweet potato peeling automatic packaging device in the patented technical solution realizes the function of automatic packaging, it is often necessary to control the weight of the sweet potatoes in a packaging bag during the packaging process. The device can only manually control the weight, and manual loading is also required, which seriously affects the packaging efficiency. The applicant has been engaged in sweet potato planting and processing related work for a long time. The existing technology cannot meet the needs of accurate and fast packaging of large-yield sweet potatoes. The existing equipment mostly relies on manual weight measurement and manual loading, and the packaging efficiency is low.

[0003] Therefore, it is necessary to develop a sweet potato packaging device for the above-mentioned defects. Utility Model Content

[0004] The utility model aims to provide a sweet potato packaging device, which can solve the problem of low packaging efficiency of existing equipment relying on manual weight measurement and manual feeding.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model discloses a sweet potato packaging device, comprising a storage box, a first conveyor belt, a pressure switch mechanism and a packaging mechanism, wherein a storage cavity for storing sweet potatoes is provided in the storage box, and a blocking mechanism for controlling the on-off of the storage box outlet is provided on the outlet of the storage box; one end of the first conveyor belt is located below the outlet of the storage box, and the other end is fixed to the top of the packaging mechanism; the pressure switch mechanism comprises a material guide port and a support plate, the material guide port is fixed to the top of the packaging mechanism and is located below the top of the first conveyor belt, the support plate can be flipped and installed on the packaging mechanism, a pressure sensor for detecting the weight of the sweet potatoes in the material guide port is provided on the support plate, and the pressure sensor, the first conveyor belt and the blocking mechanism are all electrically connected to an electric control box of the equipment.

[0007] Furthermore, the pressure switch mechanism also includes an outer sliding rod, a middle sliding rod and an inner sliding rod, the outer sliding rod is rotatably connected to the packaging mechanism, the outer sliding rod is provided with an outer sliding cavity slidably connected to the middle sliding rod, the bottom of the outer sliding cavity is provided with an air vent, and the air vent is installed with a control valve for controlling the opening and closing of the air vent; the middle sliding rod is provided with a middle sliding cavity connected to the outer sliding cavity; one end of the inner sliding rod is rotatably connected to the support plate through a rotating shaft, and the other end is slidably installed in the middle sliding cavity; support springs are provided in the outer sliding cavity and the middle sliding cavity; the pressure sensor is fixed between the rotating shaft and the support plate.

[0008] Furthermore, the packaging mechanism includes an outer box body, a bag taking part, a bag supporting part, a heat sealing assembly, an exhaust assembly and an electric support plate. The outer box body is provided with a packing cavity connected to the material guide port, and a mounting groove for installing the support plate and the outer slide rod; the electric support plate is arranged below the material guide port; mounting columns fixed to the outer box body are provided on both sides of the electric support plate; the bag taking part used to suck one side of the packaging bag is rotatably installed on the mounting column on one side, and the bag supporting part used to suck the other side of the packaging bag and open the packaging bag is fixed on the mounting column on the other side, and the heat sealing assembly and the exhaust assembly are installed on both mounting columns.

[0009] Furthermore, the packaging mechanism also includes a bag storage device, which includes a placement rack, a push plate and a propulsion spring. The placement rack is fixed in the outer box body, and is provided with an extraction hole for the bag taking part to pass through and a placement groove for accommodating the packaging bag; the push plate is slidably installed in the placement groove; and the propulsion spring is fixed between the push plate and the placement rack.

[0010] Furthermore, the blocking mechanism includes a blocking motor, a rotating wheel, a rotating rod and a lifting plate, wherein the blocking motor is fixed at the top of the storage box outlet; the rotating wheel is fixed at the output end of the blocking motor, and the rotating wheel is provided with a driving groove slidably connected to the rotating rod; the rotating rod is rotatably connected to the lifting plate; and the outlet of the storage box is provided with a lifting slot slidably connected to the lifting plate.

[0011] Furthermore, it also includes a second conveyor belt that runs through the bottom of the packaging mechanism, the second conveyor belt is placed horizontally and can output packaged sweet potatoes; the first conveyor belt is provided with a plurality of baffles that are equidistantly spaced along the width direction of the first conveyor belt.

[0012] Furthermore, a plurality of limiting grooves are provided at intervals on the second conveyor belt, and transfer baskets for holding packaged sweet potatoes are provided in the limiting grooves.

[0013] Furthermore, a sealing piston head is provided on one end of the inner slide rod close to the middle slide rod and one end of the middle slide rod close to the outer slide rod; the control valve, the outer slide rod, the inner slide rod, the middle slide rod and the support spring are all provided in a horizontal direction on the two support plates.

[0014] Furthermore, it also includes a controller electrically connected to the first conveyor belt, the pressure switch mechanism, the blocking mechanism, the second conveyor belt and the packaging mechanism, and the controller is arranged on the electrical control box of the equipment, and the controller is provided with a display screen and control keys.

[0015] Furthermore, the storage box is provided with a discharge port, and a discharge door is rotatably installed on the discharge port; the storage box is also provided with a material guide chute with an inverted trapezoidal cross section, and the material guide chute is set at a certain angle to the horizontal direction.

[0016] Compared with the prior art, the beneficial technical effects of the utility model are:

[0017] The utility model discloses a sweet potato packaging device. Through the setting of a pressure sensor, the first conveyor belt and the storage box can be automatically stopped from feeding materials according to the weight of the sweet potatoes in the material guide port based on the packaging weight threshold preset on the controller, and the sweet potatoes within a certain weight threshold range can be automatically packaged through the packaging mechanism. Automatic feeding can be achieved through the setting of the blocking mechanism, the storage box and the first conveyor belt, and the pressure sensor feedback can be automatically stopped, thereby reducing manual participation, realizing automatic sweet potato packaging, and effectively improving packaging efficiency.

[0018] In addition, the second conveyor belt can automatically stack the packaged sweet potatoes into the transfer basket and transport them out of the packaging mechanism. The control valve can automatically control the motion state between the adjacent outer slide bars, middle slide bars and inner slide bars. The structure is simple, which can not only limit the outer slide bars, middle slide bars and inner slide bars, but also play a certain buffering role to prevent the sweet potatoes from colliding and breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the sweet potato packaging device of the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the sweet potato packaging device of the utility model;

[0022] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 4 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 5 for Figure 2 Schematic diagram of the enlarged structure at C in the middle;

[0025] Figure 6 It is a schematic cross-sectional structural diagram of the outer and inner sliding rods and the control valve of the utility model.

[0026] Description of reference numerals: 1. storage box; 2. first conveyor belt; 3. pressure switch mechanism; 4. packaging mechanism; 5. blocking mechanism; 6. second conveyor belt; 7. packaging bag; 8. equipment electric control box; 11. storage chamber; 12. lifting slide; 13. material discharge door; 14. material guide chute; 21. baffle; 31. material guide port; 32. support plate; 33. outer slide rod; 34. middle slide rod; 35. inner slide rod; 36. control valve; 37. Support spring; 41. outer box body; 42. bag taking part; 43. bag supporting part; 44. heat sealing assembly; 45. exhaust assembly; 46. electric supporting plate; 47. mounting column; 48. bag storage device; 51. sealing motor; 52. rotating wheel; 53. rotating rod; 54. lifting plate; 61. transfer basket; 411. packaging chamber; 412. mounting slot; 481. placement rack; 482. push plate; 483. propulsion spring; 521. driving slot. DETAILED DESCRIPTION

[0027] The core of the utility model is to provide a sweet potato packaging device, which can solve the problem of low packaging efficiency of existing equipment relying on manual weight measurement and manual feeding.

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] Example 1

[0031] Please also read Figures 1 to 6Now, a specific embodiment of a sweet potato packaging device provided by the utility model is described. The sweet potato packaging device includes a storage box 1, a first conveyor belt 2, a pressure switch mechanism 3 and a packaging mechanism 4. The storage box 1 is provided with a storage cavity 11 for storing sweet potatoes, and the outlet of the storage box 1 is provided with a blocking mechanism 5 for controlling the on-off of the outlet of the storage box 1. One end of the first conveyor belt 2 is located below the outlet of the storage box 1, and the other end is fixed to the top of the packaging mechanism 4. The pressure switch mechanism 3 includes a material guide port 31 and a support plate 32. The material guide port 31 is fixed to the top of the packaging mechanism 4 and is located below the top of the first conveyor belt 2. The support plate 32 can be flipped and installed on the packaging mechanism 4. A pressure sensor for detecting the weight of the sweet potatoes in the material guide port 31 is provided on the support plate 32. The pressure sensor, the first conveyor belt 2 and the blocking mechanism 5 are all electrically connected to the equipment electric control box 8.

[0032] For illustration purposes, see Figure 1 , take any point in the space as the origin, take the setting direction of the pressure switch mechanism 3 relative to the packaging mechanism 4 as the Z axis, take the setting direction of the packaging mechanism 4 relative to the first conveyor belt 2 as the Y axis, and take the straight line direction perpendicular to both the Y axis and the Z axis as the X axis to establish a rectangular coordinate system, wherein the XY plane is a horizontal plane, the direction indicated on the horizontal plane is the horizontal direction, and the direction indicated by the Z axis is the vertical direction.

[0033] In this embodiment, the storage box 1 is provided with a discharge port, and a discharge door 13 is rotatably mounted on the discharge port. The storage box 1 is also provided with a material guide chute 14 with an inverted trapezoidal cross section, and the material guide chute 14 is arranged at a certain angle to the horizontal direction. Here, as long as the relevant performance functions of the above storage box 1 can be achieved, they are within the scope of protection of this application document.

[0034] In a specific embodiment of the utility model, the pressure switch mechanism 3 further includes an outer slide bar 33, a middle slide bar 34 and an inner slide bar 35. The outer slide bar 33 is rotatably connected to the packaging mechanism 4. The outer slide bar 33 is provided with an outer slide cavity slidably connected to the middle slide bar 34. The bottom of the outer slide cavity is provided with a vent hole, and a control valve 36 for controlling the opening and closing of the vent hole is installed on the vent hole. The middle slide bar 34 is provided with a middle slide cavity connected to the outer slide cavity. One end of the inner slide bar 35 is rotatably connected to the support plate 32 through a rotating shaft, and the other end is slidably installed in the middle slide cavity. Support springs 37 are provided in both the outer slide cavity and the middle slide cavity. The pressure sensor is fixed between the rotating shaft and the support plate 32.

[0035] In this embodiment, a sealing piston head is provided on one end of the inner sliding rod 35 close to the middle sliding rod 34 and one end of the middle sliding rod 34 close to the outer sliding rod 33 .

[0036] In a specific embodiment of the present utility model, the packaging mechanism 4 includes an outer box body 41, a bag taking part 42, a bag holding part 43, a heat sealing assembly 44, an exhaust assembly 45 and an electric support plate 46. The outer box body 41 is provided with a packing cavity 411 connected to the material guide port 31 and an installation groove 412 for installing the support plate 32 and the outer slide bar 33. The electric support plate 46 is arranged below the material guide port 31. Both sides of the electric support plate 46 are provided with mounting posts 47 fixed to the outer box body 41. The bag taking part 42 for sucking one side of the packaging bag 7 is rotatably mounted on the mounting post 47 located on one side, and the bag holding part 43 for sucking the other side of the packaging bag 7 and opening the packaging bag 7 is fixed on the mounting post 47 located on the other side. The heat sealing assembly 44 and the exhaust assembly 45 are installed on both mounting posts 47. The heat sealing assembly 44 is arranged between the bag holding part 43 or the bag taking part 42 and the exhaust assembly 45.

[0037] In this embodiment, the bag taking component 42 and the bag supporting component 43 can both be retractable suction cup structures for sucking the packaging bag 7, the heat sealing component 44 can be a structure for clamping the packaging bag 7 in the middle for heat sealing, and the exhaust component 45 can be a retractable clamp with elastic material at the end, and the two oppositely arranged clamps clamp the packaging bag 7 in the middle for exhaust. The electric support plate 46 is parallel to the second conveyor belt 6 during packaging to support the packaging bag 7, and after packaging is completed, it is flipped to be perpendicular to the second conveyor belt 6, so that the packaging bag 7 falls onto the second conveyor belt 6. The bag taking component 42, the bag supporting component 43, the heat sealing component 44, the exhaust component 45 and the electric support plate 46 are all existing technologies and will not be described in detail here.

[0038] In a specific embodiment of the present utility model, the packaging mechanism 4 further includes a bag storage device 48, which includes a placement frame 481, a push plate 482 and a push spring 483. The placement frame 481 is fixed in the outer box body 41, and the placement frame 481 is provided with an extraction hole for taking out the bag 42 and a placement groove for accommodating the packaging bag 7. The push plate 482 is slidably installed in the placement groove. The push spring 483 is fixed between the push plate 482 and the placement frame 481.

[0039] In a specific embodiment of the utility model, the blocking mechanism 5 includes a blocking motor 51, a rotating wheel 52, a rotating rod 53 and a lifting plate 54. The blocking motor 51 is fixed to the top of the outlet of the storage box 1. The rotating wheel 52 is fixed to the output end of the blocking motor 51. The rotating wheel 52 is provided with a driving groove 521 slidably connected to the rotating rod 53. The driving groove 521 is a long strip groove provided at a position at any diameter of the outer side of the rotating wheel 52. The rotating rod 53 is rotatably connected to the lifting plate 54. The outlet of the storage box 1 is provided with a lifting slide 12 slidably connected to the lifting plate 54.

[0040] In a specific embodiment of the utility model, the device further comprises a second conveyor belt 6 that passes through the bottom of the packaging mechanism 4, and the second conveyor belt 6 is placed horizontally and can output the packaged sweet potatoes. The first conveyor belt 2 is provided with a plurality of baffles 21 arranged along the width direction of the first conveyor belt 2 at equal intervals. The second conveyor belt 6 is provided with a plurality of limit grooves at intervals, and a transfer basket 61 for holding the packaged sweet potatoes is provided in the limit grooves.

[0041] In this embodiment, the device also includes a controller electrically connected to the first conveyor belt 2, the pressure switch mechanism 3, the blocking mechanism 5, the second conveyor belt 6 and the packaging mechanism 4. The controller is arranged on the equipment electrical control box 8, and the controller is provided with a display screen and control keys.

[0042] Example 2

[0043] Please also read Figures 1 to 6 As another embodiment of the present invention, the structure of this embodiment is basically the same as that of the above embodiment, except that two supporting plates 32 are provided at the bottom of the material guide port 31 on the packaging mechanism 4 and are rotatably mounted. The control valve 36, the outer slide bar 33, the inner slide bar 35, the middle slide bar 34 and the support spring 37 are all in one-to-one correspondence with the supporting plates 32. The two supporting plates 32 are provided with mutually adapted card slots on the opposite sides. When closed, the two supporting plates 32 are engaged with each other through the card slots. The controller obtains the data of the two pressure sensors installed on the two supporting plates 32 and calculates the sum of the two. The sum of the pressure data is compared with the preset pressure threshold to determine whether the packaging weight is met.

[0044] Compared with the prior art, the sweet potato packaging device can automatically stop the first conveyor belt 2 and the storage box 1 from feeding according to the weight of the sweet potatoes in the guide port 31 based on the threshold of the packaging weight preset on the controller through the setting of the pressure sensor, and automatically package the sweet potatoes within a certain weight threshold range through the packaging mechanism 4. Automatic feeding can be achieved through the setting of the blocking mechanism 5, the storage box 1 and the first conveyor belt 2, and the pressure sensor feedback automatically stops, reducing manual participation, realizing automatic sweet potato packaging, and effectively improving packaging efficiency. The second conveyor belt 6 can automatically stack the packaged bagged sweet potatoes into the transfer basket 61 and transport them out of the packaging mechanism 4 through the setting of the control valve 36. The motion state between the adjacent outer slide bars 33, the middle slide bar 34 and the inner slide bar 35 can be automatically controlled through the setting of the control valve 36. The structure is simple, and the outer slide bar 33, the middle slide bar 34 and the inner slide bar 35 can be limited, and a certain buffering effect can be played, which can avoid collision and damage between sweet potatoes to a certain extent.

[0045] The working process of the sweet potato packaging device of the utility model is as follows: according to the weight of the packaging bag 7, the threshold range of the sweet potato packaging weight is set on the controller, and the start button in the control key is pressed. The blocking motor 51 drives the rotating wheel 52 to rotate, and then the lifting plate 54 is pulled upward out of the lifting chute 12 through the rotating rod 53, the outlet of the storage box 1 is opened, and the sweet potatoes roll out from the outlet of the storage box 1 and fall onto the first conveyor belt 2 which is being started, and the baffle 21 on the first conveyor belt 2 drives the sweet potatoes to move upward. After the sweet potatoes move to the top of the first conveyor belt 2, they fall into the material guide port 31. At this time, the two relatively arranged support plates 32 are in a horizontally opposed state until the pressure sensor on the support plate 32 detects that the weight of the sweet potatoes on the support plate 32 is stabilized at a value exceeding the threshold range. The first conveyor belt 2 stops loading, and the controller controls the control valve 36 to open. The support plate 32 flips downward under the action of the gravity of the sweet potatoes, squeezing the inner slide bar 35 to slide toward the middle slide bar 34, and the middle slide bar 34 slides toward the outer slide bar 33, while compressing the support spring 37. Until all the sweet potatoes fall into the packaging bag 7, the inner slide bar 35 and the middle slide bar 34 pop up under the action of the support spring 37, and push the support plate 32 up to a horizontal level. At this time, the control valve 36 is closed. When the sweet potato falls into the material guide port 31, there will be gravitational acceleration, and the pressure sensor will detect a large pressure. However, the pressure value is unstable due to the mutual buffering effect of the slide bars. After detecting a relatively stable pressure value, the pressure sensor will determine whether the first conveyor belt 2 transmits the next sweet potato to the material guide port 31 or closes the first conveyor belt 2 to open the control valve 36.

[0046] Before the sweet potato falls into the packaging bag 7, the bag taking component 42 rotates around the mounting column 47 to be opposite to the placement rack 481, and the bag taking component 42 extends to absorb the packaging bag 7 and pull it out of the placement rack 481. The push plate 482 pushes the next packaging bag 7 to the position closest to the bag taking component 42 under the action of the propulsion spring 483. The bag taking component 42 rotates with the extracted packaging bag 7 to be opposite to the bag supporting component 43, and the bag supporting component 43 extends and absorbs the other side of the packaging bag 7. The bag taking component 42 and the bag supporting component 43 shrink at the same time to open the opening of the packaging bag 7. After the sweet potato falls into the packaging bag 7, the two oppositely arranged exhaust components 45 are activated to squeeze the packaging bag 7 to exhaust the air in the bag, and the two heat sealing components 44 extend to squeeze the two sides of the packaging bag 7 together for heat sealing. After sealing is completed, the bag taking part 42, the bag supporting part 43, the heat sealing component 44, and the exhaust component 45 are retracted, the electric supporting plate 46 is turned over, and the packaging bag 7 containing sweet potatoes falls into the transfer basket 61 and is transported out of the packaging mechanism 4 with the movement of the second conveyor belt 6.

[0047] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0048] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A sweet potato packaging device, characterized in that: The invention comprises a storage box (1), a first conveyor belt (2), a pressure switch mechanism (3) and a packaging mechanism (4); the storage box (1) is provided with a storage cavity (11) for storing sweet potatoes; the outlet of the storage box (1) is provided with a blocking mechanism (5) for controlling the opening and closing of the outlet of the storage box (1); one end of the first conveyor belt (2) is located below the outlet of the storage box (1), and the other end is fixed to the top of the packaging mechanism (4); the pressure switch mechanism (3) comprises a material guide port (31) and a support plate (32); the material guide port (31) is fixed to the top of the packaging mechanism (4) and is located below the top of the first conveyor belt (2); the support plate (32) can be flipped and installed on the packaging mechanism (4); a pressure sensor for detecting the weight of the sweet potatoes in the material guide port (31) is provided on the support plate (32); the pressure sensor, the first conveyor belt (2) and the blocking mechanism (5) are all electrically connected to an electric control box (8) of the equipment.

2. The sweet potato packaging device according to claim 1, characterized in that: The pressure switch mechanism (3) further comprises an outer slide bar (33), a middle slide bar (34) and an inner slide bar (35); the outer slide bar (33) is rotatably connected to the packaging mechanism (4); an outer slide cavity slidably connected to the middle slide bar (34) is provided on the outer slide bar (33); a vent hole is provided at the bottom of the outer slide cavity; a control valve (36) for controlling the opening and closing of the vent hole is installed on the vent hole; a middle slide cavity communicating with the outer slide cavity is provided on the middle slide bar (34); one end of the inner slide bar (35) is rotatably connected to the support plate (32) via a rotating shaft, and the other end is slidably installed in the middle slide cavity; a support spring (37) is provided in both the outer slide cavity and the middle slide cavity; the pressure sensor is fixed between the rotating shaft and the support plate (32).

3. The sweet potato packaging device according to claim 2, characterized in that: The packaging mechanism (4) comprises an outer box body (41), a bag taking member (42), a bag supporting member (43), a heat sealing component (44), an exhaust component (45) and an electric supporting plate (46); the outer box body (41) is provided with a packaging cavity (411) communicating with the material guide port (31), and a mounting groove (412) for mounting the support plate (32) and the outer slide bar (33); the electric supporting plate (46) is arranged below the material guide port (31); the electric supporting plate (46) Mounting columns (47) fixed to the outer box body (41) are provided on both sides; the bag taking component (42) for sucking one side of the packaging bag (7) is rotatably mounted on the mounting column (47) located on one side; the bag holding component (43) for sucking the other side of the packaging bag (7) and holding the packaging bag (7) open is fixed on the mounting column (47) located on the other side; and the heat sealing component (44) and the exhaust component (45) are both mounted on the two mounting columns (47).

4. The sweet potato packaging device according to claim 3, characterized in that: The packaging mechanism (4) also includes a bag storage device (48), and the bag storage device (48) includes a placement rack (481), a push plate (482) and a propulsion spring (483). The placement rack (481) is fixed in the outer box body (41), and the placement rack (481) is provided with an extraction hole for the bag taking member (42) to pass through and a placement groove for accommodating the packaging bag (7); the push plate (482) is slidably installed in the placement groove; the propulsion spring (483) is fixed between the push plate (482) and the placement rack (481).

5. The sweet potato packaging device according to claim 4, characterized in that: The blocking mechanism (5) comprises a blocking motor (51), a rotating wheel (52), a rotating rod (53) and a lifting plate (54); the blocking motor (51) is fixed to the top of the outlet of the storage box (1); the rotating wheel (52) is fixed to the output end of the blocking motor (51); the rotating wheel (52) is provided with a driving groove (521) slidably connected to the rotating rod (53); the rotating rod (53) is rotatably connected to the lifting plate (54); and the outlet of the storage box (1) is provided with a lifting slide groove (12) slidably connected to the lifting plate (54).

6. The sweet potato packaging device according to claim 1, characterized in that: It also includes a second conveyor belt (6) that passes through the bottom of the packaging mechanism (4), the second conveyor belt (6) is placed horizontally and can output the packaged sweet potatoes; the first conveyor belt (2) is provided with a plurality of baffles (21) arranged along the width direction of the first conveyor belt (2) at equal intervals.

7. The sweet potato packaging device according to claim 6, characterized in that: The second conveyor belt (6) is provided with a plurality of limit grooves at intervals, and a transfer basket (61) for containing the packaged sweet potatoes is provided in the limit grooves.

8. The sweet potato packaging device according to claim 2, characterized in that: A sealing piston head is provided on one end of the inner slide rod (35) close to the middle slide rod (34) and one end of the middle slide rod (34) close to the outer slide rod (33); a plurality of the control valve (36), the outer slide rod (33), the inner slide rod (35), the middle slide rod (34) and the support spring (37) are provided on the two support plates (32) in a horizontal direction.

9. The sweet potato packaging device according to claim 6, characterized in that: It also includes a controller electrically connected to the first conveyor belt (2), the pressure switch mechanism (3), the blocking mechanism (5), the second conveyor belt (6) and the packaging mechanism (4); the controller is arranged on the electrical control box (8) of the equipment; and the controller is provided with a display screen and control keys.

10. The sweet potato packaging device according to any one of claims 1 to 9, characterized in that: The storage box (1) is provided with a discharge port, on which a discharge door (13) is rotatably mounted; the storage box (1) is also provided with a material guide chute (14) with an inverted trapezoidal cross section, and the material guide chute (14) is arranged at a certain angle to the horizontal direction.

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