Film covering device and method thereof

Abstract

The invention relates to a film covering device and method. The film covering device comprises a lifting assembly and a supporting assembly which are detachably connected. The supporting assembly has a connecting state and a separating state and is configured to be capable of being controlled to be switched between the two states. When the supporting assembly is in the connected state, the supporting assembly can be used for opening the membrane assembly; when the supporting assembly is switched from the connection state to the separation state, the membrane assembly falls off from the supporting assembly. The lifting assembly can drive the supporting assembly to ascend and descend so as to adjust the height of the supporting assembly, and when the supporting assembly is located at the proper height, the membrane assembly can be more conveniently supported on the supporting assembly in a connected state; besides, the tobacco leaf stack is placed under the supporting assembly, the supporting assembly is controlled to be switched from the connected state to the separated state, the membrane assembly can fall off from the supporting assembly, in this way, the tobacco leaf stack can be smoothly covered with the membrane assembly, and operation is more convenient and faster.

Description

Technical Field

[0001] The present application relates to the technical field of tobacco leaf maintenance and pest control, and in particular to a coating device and a method thereof. Background Art

[0002] At present, the maintenance of tobacco leaves usually adopts oxygen-insulated pest control, that is, by creating a low-oxygen or anaerobic environment, pests die due to lack of oxygen. Specifically, a film is usually covered on the tobacco leaf stack to form a sealed environment inside the film, so as to achieve the effect of aging the tobacco leaves and killing pests.

[0003] However, since tobacco leaf stacks are usually large in size and large in number, the coating process is very complicated and difficult to operate, which is not conducive to improving the efficiency of the tobacco leaf curing process. Summary of the invention

[0004] Based on this, it is necessary to provide a coating device and method thereof to address the problem that the current process of coating tobacco leaf stacks is complicated and difficult to operate.

[0005] In a first aspect, the present application provides a film coating device for coating a film assembly on a tobacco leaf stack, the film coating device comprising a detachably connected lifting assembly and a supporting assembly, the lifting assembly being used to drive the supporting assembly to rise and fall;

[0006] Wherein, the support assembly has a connected state and a separated state, and is configured to be controllably switchable between the two states;

[0007] When the support assembly is in the connected state, the support assembly can be used to prop open the membrane assembly; when the support assembly is switched from the connected state to the separated state, the membrane assembly falls off the support assembly.

[0008] In some embodiments, the support assembly includes a first rod and a second rod. When the support assembly is in the connected state, the first rod and the second rod are connected end to end to form a closed structure; when the support assembly is in the separated state, the first rod and the second rod are separated.

[0009] In some embodiments, the first rod and the second rod each include two rods, and the first rod and the second rod are connected end to end to form a rectangular structure;

[0010] Among them, a first magnet is provided at the connecting end where each first rod body is connected to the corresponding second rod body, and a second magnet is provided at the connecting end where each second rod body is connected to the corresponding first rod body; the first magnet and the second magnet attract each other in the connected state, and separate from each other in the separated state.

[0011] In some embodiments, the support assembly further includes a plurality of first pull ropes and a plurality of third magnets, each of the third magnets is disposed on the corresponding first rod body and the second rod body, and is arranged at intervals along the axial direction of the corresponding first rod body or the second rod body;

[0012] One end of each of the first pull ropes is connected to the corresponding first rod body and second rod body, and the other end of each of the first pull ropes is a free end connected to a fourth magnet, and the fourth magnet is configured to be able to attract or separate from the third magnet.

[0013] In some embodiments, the membrane assembly includes a top membrane and a side membrane arranged around the outer periphery of the top membrane, when the support assembly is in the connected state, the top membrane is supported on the first rod body and the second rod body, and the side membrane is wound and stored in each of the first pull ropes;

[0014] Wherein, a second draw cord is further provided on the edge of one side of the side film away from the top film.

[0015] In some embodiments, the lifting assembly includes a pulley block and a hook, and the supporting assembly also includes a steel wire rope connected to the first rod body and the second rod body respectively;

[0016] The hook is used to be fixed to an external structure, the pulley block is configured to be able to be passed through the hook, and the steel wire rope is passed through the pulley block to drive the first rod body and the second rod body to rise and fall through the pulley block.

[0017] In a second aspect, the present application further provides a coating method, which is applied to the coating device as described above, and the coating method comprises the following steps:

[0018] Connecting the support assembly to the lifting assembly, and controlling the lifting assembly to adjust the height of the support assembly;

[0019] Controlling the support assembly to remain in a connected state, and supporting the membrane assembly on the support assembly;

[0020] Control the lifting assembly to drive the support assembly and the membrane assembly thereon to rise to a preset height;

[0021] Placing a stack of tobacco leaves to be coated directly below the support assembly;

[0022] The support assembly is controlled to switch to a separated state, so that the membrane assembly falls from the support assembly and covers the tobacco leaf pile.

[0023] In some embodiments, before the step of connecting the support assembly to the lifting assembly and controlling the lifting assembly to adjust the height of the support assembly, the step further includes:

[0024] Fix the hook in the lifting assembly directly above the area to be covered with film;

[0025] Hang the pulley block in the lifting assembly on the hook.

[0026] In some embodiments, in the step of connecting the support assembly to the lifting assembly and controlling the lifting assembly to adjust the height of the support assembly, it specifically includes:

[0027] Thread the wire rope through the pulley block, and connect the first rod body and the second rod body to the pulley block through the wire rope;

[0028] Control the pulley block to drive the first rod body and the second rod body to lift and lower.

[0029] In some embodiments, in the step of controlling the support assembly to remain in the connected state and supporting the film assembly on the support assembly, it specifically includes:

[0030] The first rod body and the second rod body are connected end to end through the first magnet and the second magnet to form a closed structure;

[0031] Place the top film on the closed structure formed by enclosing the first rod body and the second rod body;

[0032] Wind up the side film;

[0033] Pass each first draw rope on the first rod body and the second rod body around the side film, and attract the fourth magnet on each first draw rope to the third magnets on the first rod body and the second rod body.

[0034] In some embodiments, in the step of controlling the support assembly to switch to the separated state, causing the film assembly to fall from the support assembly and cover the tobacco stack, it specifically includes:

[0035] Demagnetize at least one of the first magnet and the second magnet to separate the first rod body and the second rod body;

[0036] Demagnetize at least one of the third magnet and the fourth magnet to separate the first draw rope from the corresponding first rod body or second rod body;

[0037] The side film opens, and the top film and the side film fall and cover the tobacco stack.

[0038] In some embodiments, after the step of controlling the support assembly to switch to the separated state, causing the membrane assembly to fall off the support assembly and cover the tobacco leaf stack, the method further includes the step of:

[0039] Sealing the side membrane with the bottom membrane laid at the bottom of the tobacco leaf stack.

[0040] For the above-mentioned film covering device and its method, the lifting assembly can drive the support assembly to lift and lower to adjust the height of the support assembly. When the support assembly is at an appropriate height, it is more convenient to support the membrane assembly on the support assembly in the connected state; in addition, placing the tobacco leaf stack directly below the support assembly and controlling the support assembly to switch from the connected state to the separated state can cause the membrane assembly to fall off the support assembly, so that the membrane assembly can smoothly cover the tobacco leaf stack, making the operation more convenient and fast. Description of the Drawings

[0041] Figure 1 It is a schematic structural diagram of a film covering device according to one or more embodiments.

[0042] Figure 2 It is a schematic structural diagram of the support assembly in the film covering device according to one or more embodiments.

[0043] Figure 3 It is a schematic partial structural diagram of the first rod or the second rod in the film covering device according to one or more embodiments.

[0044] Figure 4 For Figure 1 The partial enlarged view at A in

[0045] Figure 5 It is a schematic flow diagram of a film covering method according to one or more embodiments.

[0046] Description of the reference numerals: 100, film covering device; 200, membrane assembly; 201, top membrane; 202, side membrane; 203, second drawstring; 10, lifting assembly; 20, support assembly; 11, pulley block; 12, hook; 21, first rod; 22, second rod; 23, first magnet; 24, second magnet; 25, first drawstring; 26, third magnet; 27, fourth magnet; 28, steel wire rope. Detailed Description of the Embodiments

[0047] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0048] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0049] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0050] In the present application, unless otherwise clearly specified and limited, if terms such as "mounted", "connected", "coupled", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0051] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0053] See also Figure 1 , an embodiment of the present application provides a coating device 100 for coating a film assembly 200 on a tobacco leaf stack. The coating device 100 includes a lifting assembly 10 and a support assembly 20 that are detachably connected, and the lifting assembly 10 is used to drive the support assembly 20 to rise and fall. Among them, the support assembly 20 has a connected state and a separated state, and is configured to be controllably switchable between the two states. When the support assembly 20 is in the connected state, the support assembly 20 can be used to prop open the film assembly 200. When the support assembly 20 switches from the connected state to the separated state, the film assembly 200 falls from the support assembly 20.

[0054] It should be noted that the film covering device 100 is used to cover the film assembly 200 on the tobacco leaf stack and form a sealed space inside the film assembly 200. In this way, by placing corresponding medicines and desiccants inside the sealed space, pests can be effectively removed, and the tobacco leaf stack can be isolated, maintained and sterilized.

[0055] The tobacco leaf stacks are usually large in size and in large quantities, so it is difficult to operate during film coating. Based on this, the film coating device 100 of the present application includes a lifting assembly 10 and a support assembly 20, and the lifting assembly 10 and the support assembly 20 are detachably connected, so that more flexible assembly can be achieved, and the support assembly 20 can be driven to rise or fall by the lifting assembly 10.

[0056] During actual operation, the tobacco leaf stack is usually placed at a designated position for coating. Before placing the tobacco leaf stack, the lifting assembly 10 and the support assembly 20 can be fixed just above the designated position, and then the lifting assembly 10 can be used to drive the support assembly 20 to descend to a suitable height for easy operation.

[0057] The support assembly 20 has a connected state and a separated state, and can be controlled to switch between the connected state and the separated state. When the support assembly 20 is in the connected state, the membrane assembly 200 can be supported on the support assembly 20, that is, the membrane assembly 200 is propped open by the support assembly 20. Specifically, since the support assembly 20 is located at a suitable height, the membrane assembly 200 can be placed on the support assembly 20.

[0058] Then, the support assembly 20 is driven to rise by the lifting assembly 10 so as to place the tobacco leaf stack directly under the support assembly 20. At this time, the support assembly 20 is switched from the connected state to the separated state so that the membrane assembly 200 can fall from the support assembly 20 and cover the tobacco leaf stack directly under the support assembly 20.

[0059] Through the above structure, first, the lifting assembly 10 can adjust the height of the support assembly 20, and the film assembly 200 can be placed on the support assembly 20 more conveniently, and then the film assembly 200 can be dropped by switching the state of the support assembly 20, so that the film assembly 200 can be smoothly dropped onto the tobacco leaf stack to cover the tobacco leaf stack. In addition, since the lifting assembly 10 and the support assembly 20 are detachably connected, the film covering of different tobacco leaf stacks at different positions can be realized more flexibly, and the operation efficiency is higher.

[0060] like Figure 2 As shown, in some embodiments, the support assembly 20 includes a first rod 21 and a second rod 22. When the support assembly 20 is in a connected state, the first rod 21 and the second rod 22 are connected end to end to form a closed structure. When the support assembly 20 is in a separated state, the first rod 21 and the second rod 22 are separated.

[0061] Specifically, the specific shapes of the first rod body 21 and the second rod body 22 can be set according to actual needs. For example, the first rod body 21 and the second rod body 22 can be set as a plurality of straight rods or arc-shaped rods. When the support assembly 20 is in a connected state, the first rod body 21 and the second rod body 22 are connected end to end to form a closed structure. In this way, the membrane assembly 200 can be smoothly supported on the closed structure formed by the first rod body 21 and the second rod body 22.

[0062] Further, the lifting assembly 10 drives the first rod 21 and the second rod 22 to rise, and stacks the tobacco leaves right below the closed structure formed by enclosing the first rod 21 and the second rod 22. At this time, the support assembly 20 is switched to the separated state, the first rod 21 and the second rod 22 are separated from each other, so that the membrane assembly 200 drops from the first rod 21 and the second rod 22 and can smoothly cover the tobacco leaf stack.

[0063] By providing the first rod 21 and the second rod 22, the support assembly 20 can be smoothly switched between the connected state and the separated state, realizing the support and release of the membrane assembly 200. Thus, the support assembly 20 can drive the membrane assembly 200 to smoothly rise to a specified height, and then by switching the state of the support assembly 20, the membrane assembly 200 can be quickly dropped to cover the tobacco leaf stack.

[0064] In some embodiments, the first rod 21 and the second rod 22 each include two, and the first rods 21 and the second rods 22 are connected end to end to form a rectangular structure. Among them, a first magnet 23 is provided at the connection end where each first rod 21 is connected to the corresponding second rod 22, and a second magnet 24 is provided at the connection end where each second rod 22 is connected to the corresponding first rod 21. The first magnet 23 and the second magnet 24 attract each other in the connected state and separate from each other in the separated state.

[0065] Specifically, the first rod 21 and the second rod 22 are each provided with two and are both set as straight rods. The two first rods 21 and the two second rods 22 are connected end to end to enclose a rectangular structure. Since the tobacco leaf stack is usually stacked in a rectangle, in order to better match the tobacco leaf stack, the contour shape of the membrane assembly 200 usually matches the shape of the tobacco leaf stack. Based on this, the membrane assembly 200 can be more stably and smoothly supported on the rectangular structure formed by enclosing the first rod 21 and the second rod 22.

[0066] Further, the opposite ends of the first rod 21 along its own extending direction are respectively connected to the second rod 22, and the opposite ends of the second rod 22 along its own extending direction are respectively connected to the first rod 21. Therefore, the connection ends of the first rod 21 are the opposite ends of the first rod 21 along its own extending direction, and the connection ends of the second rod 22 are the opposite ends of the second rod 22 along its own extending direction.

[0067] The first magnet 23 is provided at the opposite ends of the first rod 21, and the second magnet 24 is provided at the opposite ends of the second rod 22. In this way, when the first rod 21 and the second rod 22 are connected end to end, the first magnet 23 and the second magnet 24 can attract each other, enabling the first rod 21 and the second rod 22 to smoothly enclose a rectangular structure.

[0068] When the support assembly 20 is switched to the separated state, the first magnet 23 and the second magnet 24 are separated from each other. As a specific embodiment, at least one of the first magnet 23 and the second magnet 24 can be set as an electrified demagnetizing magnet. In this way, by controlling the power on or off, the attraction or separation of the first magnet 23 and the second magnet 24 can be controlled.

[0069] Of course, in some other embodiments, other methods can also be used to achieve the attraction or separation of the first magnet 23 and the second magnet 24. For example, a manipulator or other structure can be used to separate the first rod 21 and the second rod 22. When the first rod 21 and the second rod 22 are separated by a certain distance, the separation of the first magnet 23 and the second magnet 24 can also be achieved.

[0070] Please refer to Figure 1 and Figure 3 In some embodiments, the support assembly 20 further includes a plurality of first ropes 25 and a plurality of third magnets 26. Each third magnet 26 is disposed on the corresponding first rod 21 and second rod 22 and is arranged at intervals along the axial direction of the corresponding first rod 21 or second rod 22. One end of each first rope 25 is connected to the corresponding first rod 21 and second rod 22, and the other end of each first rope 25 is a free end and is connected with a fourth magnet 27. The fourth magnet 27 is configured to be able to attract or separate from the third magnet 26.

[0071] Specifically, a plurality of first ropes 25 and a plurality of third magnets 26 are disposed on each first rod 21, wherein each first rope 25 and each third magnet 26 are respectively arranged at intervals along the axial direction of the first rod 21. Similarly, a plurality of first ropes 25 and a plurality of third magnets 26 are also disposed on each second rod 22, wherein each first rope 25 and each third magnet 26 are respectively arranged at intervals along the axial direction of the second rod 22.

[0072] Further, one end of the first rope 25 is connected to the first rod 21 or the second rod 22, and the other end is a free end, and a fourth magnet 27 is connected to the free end.

[0073] The membrane assembly 200 generally includes a top membrane 201 and a side membrane 202. The side membrane 202 is usually connected to the outer periphery of the top membrane 201. First, the top membrane 201 is supported on the rectangular structure formed by the enclosure of the first rod 21 and the second rod 22, and then the side membrane 202 is wound up. After the side membrane 202 is wound up, the free end of the first rope 25 is wound around the side membrane 202, and the fourth magnet 27 is attracted to the corresponding third magnet 26. In this way, the first rope 25 can fix the wound side membrane 202.

[0074] While the support assembly 20 switches from the connected state to the separated state, control the third magnet 26 and the fourth magnet 27 to separate from each other, so that the wound side film 202 unfolds, thereby being able to better cover the tobacco stack.

[0075] Understandably, at least one of the third magnet 26 and the fourth magnet 27 can also be set as an electrified demagnetizing magnet. In this way, the attraction or separation between the third magnet 26 and the fourth magnet 27 can be achieved by energizing or de-energizing.

[0076] In some embodiments, the film assembly 200 includes a top film 201 and a side film 202 surrounding the outer periphery of the top film 201. When the support assembly 20 is in the connected state, the top film 201 is supported on the first rod 21 and the second rod 22, and the side film 202 is wound and stored in each first drawstring 25. Wherein, a second drawstring 203 is further provided on one side edge of the side film 202 facing away from the top film 201.

[0077] Specifically, a second drawstring 203 is provided on one side edge of the side film 202 facing away from the top film 201. During the unwinding process of the side film 202, if the unwinding is incomplete due to the obstruction of some external structures, the side film 202 can be quickly unfolded by pulling the second drawstring 203, so that it can better cover the tobacco stack.

[0078] In some embodiments, the lifting assembly 10 includes a pulley block 11 and a hook 12, and the support assembly 20 further includes steel wire ropes 28 respectively connected to the first rod 21 and the second rod 22. The hook 12 is used to be fixed to an external structure, and the pulley block 11 is configured to be able to pass through the hook 12, and the steel wire rope 28 passes through the pulley block 11 to drive the first rod 21 and the second rod 22 to lift through the pulley block 11.

[0079] During actual use, first, the hook 12 can be pre-installed at a designated position, such as the ceiling of the area to be stacked. Then hang the pulley block 11 on the hook 12. Further, pass the steel wire rope 28 through the pulley block 11, and the first rod 21 and the second rod 22 can be connected to the pulley block 11 through the steel wire rope 28.

[0080] By controlling the pulley block 11, the first rod 21 and the second rod 22 can be driven to rise or fall. In addition, through the connection between the pulley block 11, the hook 12 and the steel wire rope 28, the disassembly and assembly between the lifting assembly 10 and the support assembly 20 can be realized. In this way, when the film covering of the previous tobacco stack is completed, the lifting assembly 10 and the support assembly 20 can be removed, and then the film covering of the next tobacco stack can be carried out.

[0081] Please refer to Figure 5, based on the same concept as the above-mentioned film laminating device 100, the present application also provides a film laminating method, which is applied to the film laminating device 100 as described above. The film laminating method includes the following steps:

[0082] S10: Connect the support assembly 20 to the lifting assembly 10, and control the lifting assembly 10 to adjust the height of the support assembly 20.

[0083] S20: Control the support assembly 20 to remain in the connected state, and support the film assembly 200 on the support assembly 20.

[0084] S30: Control the lifting assembly 10 to drive the support assembly 20 and the film assembly 200 thereon to rise to a preset height.

[0085] S40: Place the tobacco stack to be film laminated directly below the support assembly 20.

[0086] S50: Control the support assembly 20 to switch to the separated state, so that the film assembly 200 drops from the support assembly 20 and covers the tobacco stack.

[0087] During the actual film laminating process, first connect the support assembly 20 and the lifting assembly 10, and drive the support assembly 20 to rise or fall to an appropriate height through the lifting assembly 10. Then keep the support assembly 20 in the connected state to facilitate placing the film assembly 200 on the support assembly 20 and supporting the film assembly 200 by the support assembly 20.

[0088] Further, drive the support assembly 20 to rise to a preset height through the lifting assembly 10, and place the tobacco stack directly below the support assembly 20. After the placement of the tobacco stack is completed, control the support assembly 20 to switch from the connected state to the separated state, so that the film assembly 200 drops from the support assembly 20 and successfully covers the tobacco stack directly below.

[0089] Among them, before placing the tobacco stack, usually place a backing plate at the position directly below the support assembly 20, that is, the stacking area, and then place the bottom film on the backing plate. In this way, the backing plate can better protect the bottom film.

[0090] After the bottom film is laid, place the tobacco stack on the bottom film, and place the corresponding drugs and desiccants at the corresponding positions.

[0091] In some embodiments, before step S10, the method further includes the steps of:

[0092] S08: Fix the hook 12 in the lifting assembly 10 directly above the area to be film laminated.

[0093] S09: Hang the pulley block 11 in the lifting assembly 10 on the hook 12.

[0094] First, pre - fix the hook 12 directly above the area to be film - covered. For example, fix it on the ceiling. Then hang the pulley block 11 on the hook 12 so as to facilitate threading the wire rope 28 through the pulley block 11 to realize the connection of the first rod body 21 and the second rod body 22.

[0095] In some embodiments, in step S10, it specifically includes:

[0096] S11: Thread the wire rope 28 through the pulley block 11, and connect the first rod body 21 and the second rod body 22 to the pulley block 11 through the wire rope 28.

[0097] S12: Control the pulley block 11 to drive the first rod body 21 and the second rod body 22 to move up and down.

[0098] In some embodiments, in step S20, it specifically includes:

[0099] S21: The first rod body 21 and the second rod body 22 are connected end - to - end through the first magnet 23 and the second magnet 24 to form a closed structure.

[0100] S22: Place the top film 201 on the closed structure formed by enclosing the first rod body 21 and the second rod body 22.

[0101] S23: Wind up the side film 202.

[0102] S24: Wind each first pull rope 25 on the first rod body 21 and the second rod body 22 around the side film 202, and attract the fourth magnet 27 on each first pull rope 25 to the corresponding third magnet 26 on the first rod body 21 and the second rod body 22.

[0103] Specifically, the side film 202 encloses the outer periphery of the top film 201, supports and places the top film 201 on the first rod body 21 and the second rod body 22, winds up the side film 202, and then uses the first pull rope 25 to wind around the wound - up side film 202. The fourth magnet 27 on the first pull rope 25 attracts the corresponding third magnet 26 on the first rod body 21 and the second rod body 22, thus realizing the storage and fixation of the side film 202.

[0104] In some embodiments, in step S50, it specifically includes:

[0105] S51: Demagnetize at least one of the first magnet 23 and the second magnet 24 to separate the first rod body 21 and the second rod body 22 from each other.

[0106] S52: Demagnetize at least one of the third magnet 26 and the fourth magnet 27 to separate the first pull rope 25 from the corresponding first rod body 21 or second rod body 22.

[0107] S53: The side film 202 is opened, and the top film 201 and the side film 202 fall off and cover the tobacco stack.

[0108] Specifically, at least one of the first magnet 23 and the second magnet 24 can be set as an electrified demagnetizing magnet. In this way, the first magnet 23 and / or the second magnet 24 can be demagnetized by electrifying, so that the first rod 21 and the second rod 22 are separated from each other, and the top film 201 and the side film 202 can fall off the first rod 21 and the second rod 22 smoothly.

[0109] Furthermore, at least one of the third magnet 26 and the fourth magnet 27 can also be set as an electrified demagnetizing magnet. In this way, the third magnet 26 and / or the fourth magnet 27 can be demagnetized by electrifying, so that the first drawstring 25 is separated from the first rod 21 or the second rod 22, and the side film 202 can be unrolled.

[0110] In some embodiments, after the step S50, the following steps are further included:

[0111] S60: Seal the side film 202 with the bottom film laid at the bottom of the tobacco stack.

[0112] Specifically, after covering the top film 201 and the side film 202 on the tobacco stack, the bottom film and the side film 202 need to be arranged, and then the bottom film and the side film 202 are completely sealed with a film sealer to seal the bottom film and the side film 202. In addition, a sealing performance test is carried out on the sealed film assembly 200 to ensure good sealing performance.

[0113] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0114] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A coating device, characterized in that: Used to cover the film assembly on the tobacco leaf stack, the film covering device includes a detachably connected lifting assembly and a supporting assembly, and the lifting assembly is used to drive the supporting assembly to rise and fall; Wherein, the support assembly has a connected state and a separated state, and is configured to be controllably switchable between the two states; When the support assembly is in the connected state, the support assembly can be used to prop open the membrane assembly; when the support assembly is switched from the connected state to the separated state, the membrane assembly falls off the support assembly.

2. The coating device according to claim 1, characterized in that: The support assembly includes a first rod body and a second rod body. When the support assembly is in the connected state, the first rod body and the second rod body are connected end to end to form a closed structure; when the support assembly is in the separated state, the first rod body and the second rod body are separated.

3. The coating device according to claim 2, characterized in that: The first rod body and the second rod body respectively include two rods, and the first rod body and the second rod body are connected end to end to form a rectangular structure; Among them, a first magnet is provided at the connecting end where each first rod body is connected to the corresponding second rod body, and a second magnet is provided at the connecting end where each second rod body is connected to the corresponding first rod body; the first magnet and the second magnet attract each other in the connected state, and separate from each other in the separated state.

4. The coating device according to claim 2, characterized in that: The support assembly further includes a plurality of first pull ropes and a plurality of third magnets, each of the third magnets being disposed on the corresponding first rod body and the second rod body and arranged at intervals along the axial direction of the corresponding first rod body or the second rod body; One end of each of the first pull ropes is connected to the corresponding first rod body and second rod body, and the other end of each of the first pull ropes is a free end connected to a fourth magnet, and the fourth magnet is configured to be able to attract or separate from the third magnet.

5. The coating device according to claim 4, characterized in that: The membrane assembly includes a top membrane and a side membrane arranged around the outer periphery of the top membrane. When the support assembly is in the connected state, the top membrane is supported on the first rod body and the second rod body, and the side membrane is wound and stored in each of the first pull ropes. Wherein, a second draw cord is further provided on the edge of one side of the side film away from the top film.

6. The coating device according to claim 2, characterized in that: The lifting assembly includes a pulley block and a hook, and the supporting assembly also includes a steel wire rope connected to the first rod body and the second rod body respectively; The hook is used to be fixed to an external structure, the pulley block is configured to be able to be passed through the hook, and the steel wire rope is passed through the pulley block to drive the first rod body and the second rod body to rise and fall through the pulley block.

7. A coating method, characterized in that: Applied to the laminating device according to any one of claims 1 to 6, the laminating method comprises the following steps: Connecting the support assembly to the lifting assembly, and controlling the lifting assembly to adjust the height of the support assembly; Controlling the support assembly to remain in a connected state, and supporting the membrane assembly on the support assembly; Control the lifting assembly to drive the support assembly and the membrane assembly thereon to rise to a preset height; Placing a stack of tobacco leaves to be coated directly below the support assembly; The support assembly is controlled to switch to a separated state, so that the membrane assembly falls from the support assembly and covers the tobacco leaf pile.

8. The coating method according to claim 7, characterized in that: Before the step of connecting the support assembly to the lifting assembly and controlling the lifting assembly to adjust the height of the support assembly, the step further includes: Fix the hook in the lifting assembly to the top of the area to be coated; The pulley block in the lifting assembly is hung on the hook.

9. The coating method according to claim 8, characterized in that: The step of connecting the support assembly to the lifting assembly and controlling the lifting assembly to adjust the height of the support assembly specifically includes: Passing a steel wire rope through the pulley block, and connecting the first rod body and the second rod body to the pulley block through the steel wire rope; The pulley block is controlled to drive the first rod body and the second rod body to rise and fall.

10. The coating method according to claim 9, characterized in that: The step of controlling the support assembly to remain in a connected state and supporting the membrane assembly on the support assembly specifically includes: The first rod body and the second rod body are connected end to end via the first magnet and the second magnet to form a closed structure; placing the top film on a closed structure formed by the first rod body and the second rod body; Roll up the side film; The first pull ropes on the first rod body and the second rod body are wound around the side film, and the fourth magnets on the first pull ropes and the third magnets on the first rod body and the second rod body are attracted to each other.

11. The coating method according to claim 10, characterized in that: The step of controlling the support assembly to switch to a separated state so that the membrane assembly falls from the support assembly and covers the tobacco leaf stack specifically includes: Demagnetizing at least one of the first magnet and the second magnet to separate the first rod from the second rod; Demagnetizing at least one of the third magnet and the fourth magnet to separate the first pull rope from the corresponding first rod body or the second rod body; The side films are opened, and the top film and the side films fall down and cover the tobacco leaf stack.

12. The coating method according to claim 7, characterized in that: After the step of controlling the support assembly to switch to a separated state so that the membrane assembly falls from the support assembly and covers the tobacco leaf stack, the method further includes the following steps: The side film is sealed with the bottom film laid at the bottom of the tobacco leaf stack.

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