Tobacco turnover box cleaning device and cleaning method

Abstract

The present application belongs to the technical field of tobacco production, and discloses a tobacco turnover box cleaning device and a cleaning method. The tobacco turnover box cleaning device comprises a conveyor, a buffer cabinet, a turnover assembly, a support assembly, a first driving assembly, a camera and a cleaning module. The turnover assembly comprises a turnover motor and an L-shaped fork arm installed on the output end of the turnover motor. The L-shaped fork arm is inserted into the slot of the turnover box. The turnover motor drives the L-shaped fork arm and the turnover box to rotate around the Y-axis direction, so that the tobacco in the turnover box is poured into the buffer cabinet. The output end of the first driving assembly is provided with a bearing plate. The first driving assembly drives the bearing plate to move towards or away from the turnover assembly along the X-axis direction. The camera shoots the inner wall of the turnover box. The cleaning module is installed on the bearing plate. The cleaning module comprises a second driving assembly, a third driving assembly and a spray pipe. The second driving assembly drives the third driving assembly and the spray pipe to rotate around the Z-axis direction. The third driving assembly drives the spray pipe to rotate around the Y-axis direction.

Description

Technical Field

[0001] This invention relates to the field of tobacco production technology, and in particular to a cleaning device and method for tobacco turnover boxes. Background Technology

[0002] In the tobacco production process, tobacco leaves, shredded tobacco, and other tobacco products are placed in turnover boxes for storage or transportation. During the vacuum rehumidification process in the tobacco processing workshop, the turnover boxes and the tobacco inside them enter the vacuum rehumidification equipment for vacuuming, heating, and humidification. After humidification, the tobacco easily adheres to the inner wall of the turnover box. When the box is turned over and the tobacco is emptied, some tobacco remains stuck to the inner wall and cannot be completely emptied. To prevent the tobacco adhering to the inner wall of the turnover box from mixing with the next batch of tobacco, a blow-jet cleaning device is typically used to clean the inner wall of the turnover box. The blow-jet cleaning device includes a cylinder and an air pipe. The air pipe is connected to a compressor, which provides high-pressure gas to the air pipe. The air pipe is connected to the output end of the cylinder. The cylinder drives the air pipe to extend into the interior of the turnover box, and the air pipe sprays air onto the inner wall of the turnover box to clean the tobacco adhering to the inner wall.

[0003] However, the five inner walls of the turnover box are located in different directions. When the cylinder drives the air pipe into the inner wall of the turnover box, the nozzle of the air pipe can only face one of the inner walls. The other inner walls can only be cleaned by the return air, resulting in poor cleaning effect. Summary of the Invention

[0004] The purpose of this invention is to provide a cleaning device for tobacco turnover boxes, which adjusts the orientation of the nozzle to improve the cleaning effect on the inner wall of the turnover box.

[0005] Another objective of this invention is to provide a cleaning method that optimizes the cleaning steps for the inner wall of a turnover box and improves production efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Firstly, a tobacco turnover box cleaning device is provided, including:

[0008] Conveyors and buffer cabinets are spaced apart along the X-axis, wherein the conveyors are used to transport turnover boxes and the buffer cabinets are used to collect and transport tobacco;

[0009] A flipping assembly is disposed between the conveyor and the buffer cabinet. The flipping assembly includes a flipping motor and an L-shaped fork arm installed at the output end of the flipping motor. The L-shaped fork arm is used to insert into the slot of the turnover box. The flipping motor is used to drive the L-shaped fork arm and the turnover box to rotate around the Y-axis, so that the tobacco in the turnover box is poured into the buffer cabinet.

[0010] A support assembly is disposed on the side of the flip assembly near the buffer cabinet;

[0011] A first drive assembly is mounted on the bracket assembly. The output end of the first drive assembly is provided with a support plate. The first drive assembly is used to drive the support plate to move closer to or away from the flipping assembly along the X-axis direction.

[0012] A camera is mounted on the support plate and is used to photograph the inner wall of the turnover box;

[0013] A cleaning module is mounted on the support plate. The cleaning module includes a second drive assembly, a third drive assembly, and a nozzle. The second drive assembly is used to drive the third drive assembly and the nozzle to rotate around the Z-axis, and the third drive assembly is used to drive the nozzle to rotate around the Y-axis.

[0014] As an optional technical solution, a nozzle is fixedly installed at the end of the nozzle, and the nozzle has a first spray hole that communicates with the internal through hole of the nozzle. The cross-section of the first spray hole is a rounded rectangle.

[0015] As an optional technical solution, a nozzle is rotatably mounted at the end of the nozzle. The nozzle has a spherical cavity inside that communicates with the through hole inside the nozzle. The side wall of the nozzle has four second spray holes, which are equally spaced around the periphery of the spherical cavity. The second spray holes communicate with the outer wall of the spherical cavity and the nozzle.

[0016] As an optional technical solution, the center of the spherical cavity and the central axis of the four second nozzles are located on the same cross section, and on this cross section, the central axis of the second nozzles is parallel to or coincides with the tangent of the spherical cavity.

[0017] As an optional technical solution, the sidewall of the nozzle is also provided with a plurality of third spray holes, which are located on the side of the nozzle away from the nozzle pipe. The plurality of third spray holes are arranged at equal intervals around the rotation axis of the nozzle, and the third spray holes connect the spherical cavity and the outer wall of the nozzle.

[0018] As an optional technical solution, the extension direction of the third nozzle is perpendicular to the rotation axis of the nozzle. The third nozzle includes an inner interface located on the inner wall of the spherical cavity and an outer nozzle located on the outer wall of the nozzle. Multiple inner interfaces are interconnected, and multiple outer nozzles are isolated from each other.

[0019] As an optional technical solution, the bracket assembly is provided with a rangefinder, which is used to detect the position of the nozzle in the X-axis direction.

[0020] Secondly, a cleaning method is provided, implemented using the tobacco turnover box cleaning device described above. The turnover box includes an inner bottom wall and four inner side walls, with the inner bottom wall facing the opening of the turnover box. The cleaning method includes the following steps:

[0021] S100: Take pictures of the inner bottom wall and four inner side walls of the turnover box using a camera, and compare the amount of tobacco adhering to the four inner side walls.

[0022] S200: Calculate the first total time for blowing the inner bottom wall and the four inner sidewalls. If the first total time is less than a preset time, proceed to step S300. If the first total time is greater than the preset time, exclude the inner sidewall with the least amount of tobacco adhesion and calculate the second total time for blowing the inner bottom wall and the remaining three inner sidewalls. If the second total time is less than the preset time, proceed to step S300. If the second total time is greater than the preset time, exclude the two inner sidewalls with the least amount of tobacco adhesion and calculate the second total time for blowing the inner bottom wall and the remaining two inner sidewalls. If the third total time for the inner sidewall is less than the preset time, then step S300 is executed. If the third total time is greater than the preset time, then the three inner sidewalls with the least amount of tobacco adhesion are excluded and the fourth total time for blowing the inner bottom wall and the remaining inner sidewall is calculated. If the fourth total time is less than the preset time, then step S300 is executed. If the fourth total time is greater than the preset time, then the four inner sidewalls are excluded and the fifth total time for blowing the inner bottom wall is calculated. If the fifth total time is less than the preset time, then step S300 is executed.

[0023] S300: Clean the turnover box by blowing air through the nozzle.

[0024] As an optional technical solution, the following steps are included before step S100:

[0025] The L-shaped fork arm is driven by a flipping motor to flip around the Y-axis onto the platform of the conveyor. The conveyor pushes the turnover box toward the flipping assembly. After the L-shaped fork arm is inserted into the slot of the turnover box, the flipping motor drives the L-shaped fork arm to flip around the Y-axis to the top of the buffer cabinet. The turnover box pours tobacco into the buffer cabinet.

[0026] As an optional technical solution, in step S200, if the fifth total duration is greater than the preset duration, the inner bottom wall is divided into regions, the amount of tobacco adhering to each region of the inner bottom wall is compared, and the region with the largest amount of tobacco adhering is blown first. When the blowing time reaches the preset duration, the blowing of the turnover box is stopped, and the next turnover box is unloaded and blown clean.

[0027] The beneficial effects of this invention are:

[0028] This invention provides a tobacco turnover box cleaning device, which includes a conveyor, a buffer cabinet, a tilting assembly, a support assembly, a first drive assembly, a camera, and a cleaning module. The conveyor and the buffer cabinet are spaced apart along the X-axis. The conveyor is used to transport the turnover boxes, and the buffer cabinet is used to collect and transport tobacco. The tilting assembly is located between the conveyor and the buffer cabinet. The tilting assembly includes a tilting motor and an L-shaped fork arm installed at the output end of the tilting motor. The L-shaped fork arm is used to insert into a slot in the turnover box. The tilting motor is used to drive the L-shaped fork arm and the turnover box to rotate around the Y-axis, so that the tobacco in the turnover box... The grass is poured into the buffer cabinet; the support assembly is located on the side of the flipping assembly near the buffer cabinet; the first drive assembly is installed on the support assembly, and the output end of the first drive assembly is provided with a support plate. The first drive assembly is used to drive the support plate to move closer to or away from the flipping assembly along the X-axis; the camera is installed on the support plate and is used to photograph the inner wall of the turnover box; the cleaning module is installed on the support plate and includes a second drive assembly, a third drive assembly, and a nozzle. The second drive assembly is used to drive the third drive assembly and the nozzle to rotate around the Z-axis, and the third drive assembly is used to drive the nozzle to rotate around the Y-axis.

[0029] When the tobacco turnover box cleaning device is started, the flipping motor drives the L-shaped fork arm to flip onto the conveyor platform. The conveyor pushes the turnover box towards the flipping component. After the L-shaped fork arm is inserted into the slot of the turnover box, the flipping motor drives the L-shaped fork arm to flip around the Y-axis to the top of the buffer cabinet. The turnover box pours tobacco into the buffer cabinet. The first drive component drives the carrier plate, camera and cleaning module to approach the turnover box along the X-axis. The nozzle extends into the interior of the turnover box. Since the nozzle can rotate around the Z-axis and Y-axis and can also move along the X-axis, the nozzle can spray and clean the five inner walls of the turnover box from multiple angles, improving the cleaning effect.

[0030] The cleaning method provided by this invention includes the following steps: S100, taking pictures of the inner bottom wall and four inner side walls of the turnover box using a camera, and comparing the amount of tobacco adhering to the four inner side walls; S200, calculating the first total time for blowing the inner bottom wall and the four inner side walls; if the first total time is less than a preset time, then proceeding to step S300; if the first total time is greater than the preset time, then excluding the inner side wall with the least amount of tobacco adhering and calculating the second total time for blowing the inner bottom wall and the remaining three inner side walls; if the second total time is less than the preset time, then proceeding to step S300; if the second total time is greater than the preset time, then excluding the inner side wall with the least amount of tobacco adhering. Two inner walls are excluded, and the third total time for blowing the inner bottom wall and the remaining two inner walls is calculated. If the third total time is less than the preset time, step S300 is executed. If the third total time is greater than the preset time, the three inner walls with the least tobacco adhesion are excluded, and the fourth total time for blowing the inner bottom wall and the remaining one inner wall is calculated. If the fourth total time is less than the preset time, step S300 is executed. If the fourth total time is greater than the preset time, all four inner walls are excluded, and the fifth total time for blowing the inner bottom wall is calculated. If the fifth total time is less than the preset time, step S300 is executed. S300: The turnover box is cleaned by blowing using a nozzle. Using the above cleaning method to clean the turnover box can prevent material breakage due to excessive cleaning time. Attached Figure Description

[0031] Figure 1 This is a first-view structural schematic diagram of the tobacco turnover box cleaning device of the present invention;

[0032] Figure 2 yes Figure 1 A magnified view of a portion of position A in the middle;

[0033] Figure 3 This is a second-view structural schematic diagram of the tobacco turnover box cleaning device of the present invention;

[0034] Figure 4 This is a schematic diagram of the nozzle structure of the present invention;

[0035] Figure 5 This is another schematic diagram of the nozzle structure of the present invention;

[0036] Figure 6 This is a cross-sectional view of the nozzle of the present invention;

[0037] Figure 7 This is a cross-sectional view of the nozzle of the present invention from another perspective;

[0038] Figure 8 This is a flowchart of the cleaning method of the present invention.

[0039] In the picture:

[0040] 100. Turnover boxes;

[0041] 1. Conveyor; 2. Buffer cabinet; 3. Tilting assembly; 31. L-shaped fork arm; 4. Support assembly; 5. First drive assembly; 6. Bearing plate; 7. Camera; 8. Cleaning module; 81. Second drive assembly; 82. Third drive assembly; 83. Spray pipe; 84. Nozzle; 841. First spray hole; 842. Spherical cavity; 843. Second spray hole; 844. Third spray hole. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0043] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0046] Example 1

[0047] like Figures 1 to 3As shown, this embodiment provides a tobacco turnover box cleaning device, which includes a conveyor 1, a buffer cabinet 2, a tilting assembly 3, a support assembly 4, a first drive assembly 5, a camera 7, and a cleaning module 8. The conveyor 1 and the buffer cabinet 2 are spaced apart along the X-axis. The conveyor 1 is used to transport the turnover box 100, and the buffer cabinet 2 is used to collect and transport tobacco. The tilting assembly 3 is disposed between the conveyor 1 and the buffer cabinet 2. The tilting assembly 3 includes a tilting motor and an L-shaped fork arm 31 installed at the output end of the tilting motor. The L-shaped fork arm 31 is used to insert into the slot of the turnover box 100. The tilting motor is used to drive the L-shaped fork arm 31 and the turnover box 100 to rotate around the Y-axis, so that the tobacco in the turnover box 100... Grass is poured into buffer cabinet 2; support assembly 4 is set on the side of flipping assembly 3 near buffer cabinet 2; first drive assembly 5 is installed on support assembly 4, and the output end of first drive assembly 5 is provided with a support plate 6. First drive assembly 5 is used to drive support plate 6 to move closer to or away from flipping assembly 3 along the X-axis direction; camera 7 is installed on support plate 6, and camera 7 is used to take pictures of the inner wall of turnover box 100; cleaning module 8 is installed on support plate 6, and cleaning module 8 includes second drive assembly 81, third drive assembly 82 and nozzle 83. Second drive assembly 81 is used to drive third drive assembly 82 and nozzle 83 to rotate around Z-axis direction, and third drive assembly 82 is used to drive nozzle 83 to rotate around Y-axis direction.

[0048] Specifically, the turnover box 100 consists of five panels. The turnover box 100 has an opening, and the panels opposite the opening have slots. When the conveyor 1 transports the turnover box 100, the opening of the turnover box 100 faces upwards, and the panels with slots abut against the platform of the conveyor 1. When the tobacco turnover box cleaning device is started, the tilting motor drives the L-shaped fork arm 31 to tilt onto the platform of the conveyor 1. The conveyor 1 pushes the turnover box 100 towards the tilting assembly 3. After the L-shaped fork arm 31 is inserted into the slot of the turnover box 100, the tilting motor drives the L-shaped fork arm 31 to tilt around the Y-axis towards the buffer cabinet 2. At the top, the turnover box 100 pours tobacco into the buffer cabinet 2. The buffer cabinet 2 collects the tobacco and transports it to the next process. Then, the opening of the turnover box 100 is oriented towards the cleaning module 8 along the X-axis. The first drive assembly 5 drives the carrier plate 6, camera 7, and cleaning module 8 to approach the turnover box 100 along the X-axis. The nozzle 83 extends into the interior of the turnover box 100. Since the nozzle 83 can rotate around the Z-axis and Y-axis and can also move along the X-axis, the nozzle 83 can spray and clean the five inner walls of the turnover box 100 from multiple angles, improving the cleaning effect.

[0049] Optionally, the top of the support assembly 4 is equipped with a slide rail, and the bottom of the support plate 6 is equipped with a slider, which slides on the slide rail. The support assembly 4 is equipped with a displacement sensor that detects the X-axis coordinate of the support plate 6, ensuring that the support plate 6 can drive the camera 7 and the cleaning module 8 back to the zero position. The support plate 6 is equipped with an angle sensor that detects the angle of the nozzle 83. Starting from the zero point, the range of rotation around the Z-axis is between -90° and +90°, and the range of rotation around the Y-axis is between -30° and +30°, preventing damage to components from exceeding the limits.

[0050] In this embodiment, the first drive assembly 5 includes a first motor and a lead screw and nut pair. The lead screw and nut pair is connected between the first motor and the bearing plate 6. The first motor drives the bearing plate 6 to move along the X-axis direction through the lead screw and nut pair.

[0051] In some other embodiments, the first drive assembly 5 includes a first cylinder, the output end of which is connected to the support plate 6, and the first cylinder drives the support plate 6 to move along the X-axis.

[0052] In this embodiment, the second drive assembly 81 includes a second motor, and the third drive assembly 82 and the nozzle 83 are mounted on the output end of the second motor. The second motor can drive the third drive assembly 82 and the nozzle 83 to rotate around the Z-axis. The third drive assembly 82 includes a third motor, and the nozzle 83 is mounted on the output end of the third motor. The third motor can drive the nozzle 83 to rotate around the Y-axis.

[0053] In this embodiment, the X-axis and Y-axis are both horizontal lines, and the Z-axis is a vertical line.

[0054] Since the nozzle 83 can rotate around the Y-axis and Z-axis, it can be adjusted up, down, left, and right, as well as forward and backward along the X-axis. Therefore, the orientation of the nozzle 83 can be adjusted as needed to precisely clean the five inner walls of the turnover box 100 and improve the cleaning effect.

[0055] The working principle of the compressor providing high-pressure gas to the nozzle 83 can be referred to the existing technology, and will not be described in detail in this embodiment.

[0056] like Figure 4 As shown, in some embodiments, a nozzle 84 is fixedly installed at the end of the nozzle 83. The nozzle 84 has a first spray hole 841 that communicates with the internal through hole of the nozzle 83. The cross-section of the first spray hole 841 is a rounded rectangle. By using the nozzle 84 to compress gas and accelerate the gas, tobacco adhering to the inner wall of the turnover box 100 can be effectively blown away.

[0057] like Figures 5 to 7As shown, in some other embodiments, a nozzle 84 is rotatably mounted at the end of the nozzle 83. The nozzle 84 has a spherical cavity 842 communicating with the internal through-hole of the nozzle 83. Four second spray holes 843 are provided on the sidewall of the nozzle 84, equidistantly surrounding the circumference of the spherical cavity 842. The second spray holes 843 communicate with the outer wall of the spherical cavity 842 and the outer wall of the nozzle 84. The nozzle 84 includes a fixed part and a rotating part. The fixed part is fixedly inserted into the end of the nozzle 83, and the rotating part is rotatably mounted on the fixed part. The spherical cavity 842 and the second spray holes 843 are located in the rotating part. Under gas pressure, the nozzle 84 rotates at the end of the nozzle 83, performing rotary blowing cleaning to improve the cleaning effect. The four second spray holes 843 are equidistantly spaced, ensuring that the air pressure of each second spray hole 843 is equal.

[0058] like Figures 5 to 7 As shown, optionally, the center of the spherical cavity 842 and the central axis of the four second nozzles 843 are located on the same cross section. On this cross section, the central axis of the second nozzles 843 is parallel to or coincides with the tangent of the spherical cavity 842, ensuring the guiding effect of the second nozzles 843 on the high-pressure gas.

[0059] like Figures 5 to 7 As shown, optionally, the sidewall of the nozzle 84 is also provided with a plurality of third spray holes 844. The plurality of third spray holes 844 are located on the side of the nozzle 84 away from the spray pipe 83. The plurality of third spray holes 844 are equally spaced around the rotation axis of the nozzle 84. The third spray holes 844 connect the spherical cavity 842 and the outer wall of the nozzle 84. The extension direction of the third spray holes 844 is set at an angle to the extension direction of the second spray hole 843, which can spray the inner wall of the turnover box 100 from different directions, thereby improving cleaning efficiency; the plurality of third spray holes 844 are equally spaced so that the air pressure of each third spray hole 844 is equal.

[0060] like Figures 5 to 7 As shown, optionally, the extension direction of the third nozzle 844 is perpendicular to the rotation axis of the nozzle 84. The third nozzle 844 includes an inner interface located on the inner wall of the spherical cavity 842 and an outer nozzle located on the outer wall of the nozzle 84. Multiple inner interfaces are connected to each other, and multiple outer nozzles are isolated from each other. Part of the gas in the spherical cavity 842 is discharged from the second nozzle 843, and another part is discharged from the third nozzle 844.

[0061] Optionally, the bracket assembly 4 is equipped with a rangefinder used to detect the position of the nozzle 84 in the X-axis direction. The rangefinder can be a grating ruler or a rangefinder.

[0062] Example 2

[0063] like Figure 8As shown, this embodiment provides a cleaning method, implemented using the tobacco turnover box cleaning device as described in Embodiment 1. The turnover box 100 includes an inner bottom wall and four inner side walls, with the inner bottom wall directly facing the opening of the turnover box 100. The cleaning method includes the following steps:

[0064] S100 uses camera 7 to take pictures of the inner bottom wall and four inner side walls of the turnover box 100 and compares the amount of tobacco adhering to the four inner side walls.

[0065] S200: Calculate the first total time for blowing the inner bottom wall and the four inner side walls. If the first total time is less than the preset time, proceed to step S300. If the first total time is greater than the preset time, exclude the inner side wall with the least amount of tobacco adhesion and calculate the second total time for blowing the inner bottom wall and the remaining three inner side walls. If the second total time is less than the preset time, proceed to step S300. If the second total time is greater than the preset time, exclude the two inner side walls with the least amount of tobacco adhesion and calculate the second total time for blowing the inner bottom wall and the remaining two inner side walls. If the third total time for the sidewalls is less than the preset time, then proceed to step S300. If the third total time is greater than the preset time, then exclude the three inner sidewalls with the least amount of tobacco adhesion and calculate the fourth total time for the inner bottom wall and the remaining inner sidewall. If the fourth total time is less than the preset time, then proceed to step S300. If the fourth total time is greater than the preset time, then exclude the four inner sidewalls and calculate the fifth total time for the inner bottom wall. If the fifth total time is less than the preset time, then proceed to step S300.

[0066] S300 uses nozzle 83 to clean the turnover box 100 by blowing.

[0067] The tobacco turnover box cleaning device needs to transport the tobacco to the downstream loose and rehydrated electronic belt scale on time. When the turnover box 100 starts to unload, the amount of tobacco poured can meet the supply requirements. However, after the turnover box 100 is unloaded, when the turnover box 100 is cleaned by blowing, the amount of tobacco blown off the inner wall of the turnover box 100 may not meet the supply requirements. Therefore, it is necessary to control the cleaning time to prevent the interruption of supply. In this embodiment, camera 7 is used to identify the amount of tobacco adhering to the inner wall of turnover box 100. Before the flipping component 3 pours the material from turnover box 100, the opening of turnover box 100 faces upward, and the inner bottom wall of turnover box 100 is the most moist and has the largest amount of tobacco adhering. After turnover box 100 is flipped and poured, priority is given to blowing on the inner bottom wall with the largest amount of tobacco adhering, so that the tobacco adhering to the inner bottom wall of turnover box 100 falls into buffer cabinet 2 with the highest efficiency, so as to provide tobacco to the next station in time and prevent material shortage. When the next station is about to run out of material, even if there is still tobacco adhering to the inner wall of turnover box 100, it is necessary to abandon cleaning turnover box 100 and the flipping component 3 flips and pours the next turnover box 100 full of tobacco, so as to continue to supply material to the downstream in time and prevent material shortage.

[0068] Specifically, based on the amount of tobacco adhering to the walls, the four inner walls are sequentially divided into the first inner wall, the second inner wall, the third inner wall, and the fourth inner wall. The amount of tobacco adhering to the bottom wall, the first inner wall, the second inner wall, the third inner wall, and the fourth inner wall gradually decreases. If the calculated total time for blowing the bottom wall and the four inner walls is less than the preset time, it indicates that blowing and cleaning the bottom wall and the four inner walls of the turnover box 100 will not cause material interruption. If the first total duration of the wall is greater than the preset duration, it indicates that blowing and cleaning the inner bottom wall and all four inner side walls of the turnover box 100 will cause material interruption. In order to prevent material interruption, blowing and cleaning of at least one inner side wall must be abandoned. In this embodiment, the fourth inner side wall with the least amount of tobacco adhesion is abandoned first. The second total duration of the inner bottom wall, the first inner side wall, the second inner side wall and the third inner side wall is recalculated, and the second total duration is compared with the preset duration again. The above steps are repeated until step S300 can be executed.

[0069] Optionally, before step S100, the following steps are also included:

[0070] The L-shaped fork arm 31 is driven by a flipping motor to flip around the Y-axis onto the platform of the conveyor 1. The conveyor 1 pushes the turnover box 100 toward the flipping assembly 3. After the L-shaped fork arm 31 is inserted into the slot of the turnover box 100, the flipping motor drives the L-shaped fork arm 31 to flip around the Y-axis to the top of the buffer cabinet 2. The turnover box 100 pours the tobacco into the buffer cabinet 2.

[0071] With the L-shaped fork arm 31 flipped onto the platform of the conveyor 1 as the initial state, after the L-shaped fork arm 31 is inserted into the slot of the turnover box 100, the flipping motor drives the L-shaped fork arm 31 to rotate around the Y-axis at an angle greater than 90 degrees and less than 180 degrees, so that the turnover box 100 can pour tobacco into the buffer cabinet 2 in an inclined state. Then, the turnover box 100 is lowered back to a horizontal state, that is, the opening of the turnover box 100 faces the cleaning module 8 along the X-axis. The first drive component 5 drives the carrier plate 6, the camera 7 and the cleaning module 8 to approach the turnover box 100 along the X-axis to perform blow cleaning on the turnover box 100. After the blow cleaning is completed, the turnover box 100 is adjusted to an inclined state so that the turnover box 100 can pour tobacco into the buffer cabinet 2 in an inclined state.

[0072] Optionally, in step S200, if the fifth total duration is longer than the preset duration, the inner bottom wall is divided into regions, and the amount of tobacco adhering to each region of the inner bottom wall is compared. The region with the largest amount of tobacco adhering is blown first. When the blowing time reaches the preset duration, the blowing of the turnover box 100 is stopped, and the next turnover box 100 is unloaded and blown cleaned.

[0073] Tobacco does not always adhere evenly to all areas of the inner bottom wall. Some areas have a larger amount of tobacco adhering, while others have a smaller amount. When the fifth total duration exceeds the preset time, the area with the largest amount of tobacco adhering is sprayed first. For example, the inner bottom wall is divided into four areas, which are designated as Area 1, Area 2, Area 3, and Area 4 based on the amount of tobacco adhering. The amount of tobacco adhering in Area 1, Area 2, Area 3, and Area 4 gradually decreases. Area 1 is sprayed first, and if the material has not yet run out, Area 2 is sprayed, until the spraying time reaches the preset time.

[0074] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A cleaning method, implemented using a tobacco turnover box cleaning device, characterized in that, The tobacco turnover box cleaning device includes: A conveyor (1) and a buffer cabinet (2) are spaced apart along the X-axis. The conveyor (1) is used to transport turnover boxes (100), and the buffer cabinet (2) is used to collect and transport tobacco. A flipping assembly (3) is disposed between the conveyor (1) and the buffer cabinet (2). The flipping assembly (3) includes a flipping motor and an L-shaped fork arm (31) installed at the output end of the flipping motor. The L-shaped fork arm (31) is used to insert into the slot of the turnover box (100). The flipping motor is used to drive the L-shaped fork arm (31) and the turnover box (100) to rotate around the Y-axis, so that the tobacco in the turnover box (100) is poured into the buffer cabinet (2). The support assembly (4) is disposed on the side of the flip assembly (3) near the buffer cabinet (2); A first drive assembly (5) is installed on the bracket assembly (4). The output end of the first drive assembly (5) is provided with a support plate (6). The first drive assembly (5) is used to drive the support plate (6) to move closer to or away from the flipping assembly (3) along the X-axis direction. A camera (7) is installed on the support plate (6) and is used to take pictures of the inner wall of the turnover box (100); A cleaning module (8) is mounted on the support plate (6). The cleaning module (8) includes a second drive assembly (81), a third drive assembly (82), and a nozzle (83). The second drive assembly (81) is used to drive the third drive assembly (82) and the nozzle (83) to rotate around the Z-axis. The third drive assembly (82) is used to drive the nozzle (83) to rotate around the Y-axis. The turnover box (100) includes an inner bottom wall and four inner side walls, with the inner bottom wall facing the opening of the turnover box (100); The cleaning method includes the following steps: S100. The inner bottom wall and four inner side walls of the turnover box (100) are photographed and identified by the camera (7), and the amount of tobacco adhering to the four inner side walls is compared. S200: Calculate the first total time for blowing the inner bottom wall and the four inner sidewalls. If the first total time is less than a preset time, proceed to step S300. If the first total time is greater than the preset time, exclude the inner sidewall with the least amount of tobacco adhesion and calculate the second total time for blowing the inner bottom wall and the remaining three inner sidewalls. If the second total time is less than the preset time, proceed to step S300. If the second total time is greater than the preset time, exclude the two inner sidewalls with the least amount of tobacco adhesion and calculate the second total time for blowing the inner bottom wall and the remaining two inner sidewalls. If the third total time for the inner sidewall is less than the preset time, then step S300 is executed. If the third total time is greater than the preset time, then the three inner sidewalls with the least amount of tobacco adhesion are excluded and the fourth total time for blowing the inner bottom wall and the remaining inner sidewall is calculated. If the fourth total time is less than the preset time, then step S300 is executed. If the fourth total time is greater than the preset time, then the four inner sidewalls are excluded and the fifth total time for blowing the inner bottom wall is calculated. If the fifth total time is less than the preset time, then step S300 is executed. In step S200, if the fifth total duration is greater than the preset duration, the inner bottom wall is divided into regions, and the amount of tobacco adhering to each region of the inner bottom wall is compared. The region with the largest amount of tobacco adhering is blown first. When the blowing time reaches the preset duration, the blowing of the turnover box (100) is stopped, and the next turnover box (100) is unloaded and blown cleaned. S300, the turnover box (100) is cleaned by blowing using a nozzle (83).

2. The cleaning method according to claim 1, characterized in that, A nozzle (84) is fixedly installed at the end of the nozzle (83). The nozzle (84) has a first spray hole (841) inside that connects to the through hole inside the nozzle (83). The cross-section of the first spray hole (841) is a rounded rectangle.

3. The cleaning method according to claim 1, characterized in that, A nozzle (84) is rotatably mounted at the end of the nozzle (83). The nozzle (84) has a spherical cavity (842) inside that communicates with the through hole inside the nozzle (83). The side wall of the nozzle (84) has four second nozzle holes (843). The four second nozzle holes (843) are evenly spaced around the periphery of the spherical cavity (842). The second nozzle holes (843) communicate with the outer wall of the spherical cavity (842) and the nozzle (84).

4. The cleaning method according to claim 3, characterized in that, The center of the spherical cavity (842) and the central axis of the four second nozzles (843) are located on the same cross section, on which the central axis of the second nozzles (843) is parallel to or coincides with the tangent of the spherical cavity (842).

5. The cleaning method according to claim 3, characterized in that, The sidewall of the nozzle (84) is also provided with a plurality of third nozzle holes (844). The plurality of third nozzle holes (844) are located on the side of the nozzle (84) away from the nozzle pipe (83). The plurality of third nozzle holes (844) are arranged at equal intervals around the rotation axis of the nozzle (84). The third nozzle holes (844) connect the spherical cavity (842) and the outer wall of the nozzle (84).

6. The cleaning method according to claim 5, characterized in that, The extension direction of the third nozzle (844) is perpendicular to the rotation axis of the nozzle (84). The third nozzle (844) includes an inner interface located on the inner wall of the spherical cavity (842) and an outer nozzle located on the outer wall of the nozzle (84). The multiple inner interfaces are connected to each other, and the multiple outer nozzles are isolated from each other.

7. The cleaning method according to claim 2 or 3, characterized in that, The bracket assembly (4) is provided with a distance measuring element, which is used to detect the position of the nozzle (84) in the X-axis direction.

8. The cleaning method according to claim 1, characterized in that, Prior to step S100, the following steps are also included: The L-shaped fork arm (31) is driven by a flip motor to flip around the Y-axis onto the platform of the conveyor (1). The conveyor (1) pushes the turnover box (100) toward the flip assembly (3). After the L-shaped fork arm (31) is inserted into the slot of the turnover box (100), the flip motor drives the L-shaped fork arm (31) to flip around the Y-axis to the top of the buffer cabinet (2). The turnover box (100) pours tobacco into the buffer cabinet (2).

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