Leaf laying device

Abstract

The utility model discloses a leaf laying device, relates to the technical field of tobacco processing, and mainly aims to realize automatic operation of a leaf laying procedure and effectively improve the efficiency and stability of leaf laying operation. According to the main technical scheme, the tobacco leaf laying device comprises a lifting mechanism, the lifting mechanism is arranged on a feeding station in a lifting mode, and the lifting mechanism can lift tobacco stacks conveyed to the feeding station to a material taking station; the clamping mechanism is movably arranged between the material taking station and the material receiving station, and the clamping mechanism is used for clamping the tobacco leaves in the tobacco stack located at the material taking station and transferring the tobacco leaves to the material receiving station; and the leaf laying table is arranged on the material receiving station.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tobacco processing, and particularly relates to a tobacco leaf spreading device. BACKGROUND

[0002] In the tobacco leaf spreading and unbinding process of the domestic tobacco processing industry, the traditional operation process is to spread the tobacco leaves contained in a tobacco basket on a tobacco leaf spreading table. At present, the tobacco leaf spreading process is mainly completed in a manual feeding mode. However, with the change of the social and economic environment, the manual tobacco leaf spreading mode has exposed many disadvantages. First, manual feeding leads to great personnel mobility. Since the labor intensity of the process is relatively high and the working environment has certain particularity, the difficulty of recruiting workers is rising. Moreover, the use of a large number of workers directly causes the continuous rise of labor cost, which not only brings heavy economic burden to the production and operation of enterprises, but also limits the ability of enterprises to further expand production scale or upgrade and transform technology. At the same time, manual operation cannot ensure the uniformity and stability of tobacco leaf spreading, and has an adverse effect on the quality and efficiency of the subsequent unbinding process. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the application provides a tobacco leaf spreading device, which mainly aims to realize the automatic operation of the tobacco leaf spreading process and effectively improve the efficiency and stability of the tobacco leaf spreading operation.

[0004] To achieve the above-mentioned purpose, the application mainly provides the following technical solutions:

[0005] The application provides a tobacco leaf spreading device, which comprises:

[0006] A lifting mechanism, which is arranged in the in-feed station in a liftable manner, and is capable of lifting the tobacco stack transported to the in-feed station to a material taking station;

[0007] A clamping mechanism, which is movably arranged between the material taking station and a material receiving station, and is used for clamping the tobacco leaves in the tobacco stack at the material taking station and transferring the tobacco leaves to the material receiving station for tobacco leaf spreading.

[0008] Optionally, the lifting mechanism comprises:

[0009] A frame base, which is arranged on the ground or a support platform of the in-feed station;

[0010] A screw rod assembly, which is rotatably arranged on the frame base, and a screw pair is drivingly connected to the screw rod assembly through a threaded structure;

[0011] a driving motor, the driving motor is arranged on the frame base, an output end of the driving motor is connected with the screw rod assembly, and the driving motor is used for driving the screw rod assembly to move;

[0012] a lifting platform, the lifting platform is fixed opposite to the screw pair, and the lifting platform is used for carrying the tobacco ridge.

[0013] Optionally, the lifting mechanism further comprises:

[0014] a first inductor, the first inductor is arranged on the frame base, and the first inductor is used for sensing the lifting height of the tobacco ridge.

[0015] Optionally, the tobacco leaf laying device further comprises:

[0016] a linear module, the linear module is arranged between the material taking station and the material receiving station, the clamping mechanism is connected with the linear module, and the linear module is used for driving the clamping mechanism to move.

[0017] Optionally, the clamping mechanism comprises:

[0018] a clamping assembly, the clamping assembly comprises a plurality of movable pins, the working states of the plurality of movable pins comprise a first state and a second state, when the plurality of movable pins are in the first state, adjacent two movable pins are opened to insert the tobacco ridge, and when the plurality of movable pins are in the second state, adjacent two movable pins are closed to clamp the tobacco leaf.

[0019] Optionally, the clamping mechanism further comprises:

[0020] a lifting assembly, the lifting assembly is connected with the clamping assembly, and the lifting assembly is used for driving the clamping assembly to lift.

[0021] Optionally, the clamping mechanism further comprises:

[0022] a second inductor, the second inductor is arranged on the clamping assembly, and the second inductor is used for sensing the interval distance between the clamping assembly and the tobacco ridge.

[0023] Optionally, the clamping mechanism comprises at least two clamping mechanisms, and the at least two clamping mechanisms are parallel.

[0024] Optionally, the tobacco leaf laying device further comprises:

[0025] a material feeding mechanism, the material feeding mechanism is used for conveying the tobacco ridge to the material feeding station.

[0026] Optionally, when the lifting mechanism lifts the tobacco column, the tobacco column is located on the feeding mechanism, and the feeding mechanism is provided with a baffle opposite to one side of the tobacco column.

[0027] By means of the technical scheme, the application has at least the following beneficial effects:

[0028] The leaf laying device provided in the embodiment of the application can replace manual leaf laying operation by means of the lifting mechanism and the clamping mechanism, thereby reducing the large demand of enterprises for manpower, reducing the costs of recruitment and training caused by personnel flow, and reducing the burden of human resource management of enterprises, so that the enterprises have more advantages in human cost control. Further, the automatic operation of the lifting mechanism and the clamping mechanism greatly accelerates the transfer speed of tobacco from the feeding station to the receiving station compared with traditional manual leaf laying, reduces the time consumption of the leaf laying process, and improves the production efficiency of the entire tobacco processing production line. At the same time, the clamping mechanism can accurately clamp the tobacco and place it uniformly on the leaf laying table, effectively avoiding the problems of uneven and irregular leaf laying caused by human factors during manual leaf laying, and ensuring the consistency and stability of leaf laying, thereby providing high-quality tobacco basis for the subsequent untwisting process. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a structural schematic diagram of a leaf laying device according to an optional embodiment of the application;

[0030] Figure 2 FIG. 2 is a structural schematic diagram of a lifting mechanism according to an optional embodiment of the application;

[0031] Figure 3 FIG. 3 is a structural schematic diagram of a movable pin in a first state according to an optional embodiment of the application;

[0032] Figure 4 FIG. 4 is a structural schematic diagram of a movable pin in a second state according to an optional embodiment of the application.

[0033] The reference signs are as follows:

[0034] 1, lifting mechanism; 11, frame base; 12, screw rod assembly; 13, screw pair; 14, driving motor; 15, lifting platform; 2, clamping mechanism; 21, clamping assembly; 221, movable pin; 22, lifting assembly; 3, linear module; 4, feeding assembly; 5, baffle. DETAILED DESCRIPTION

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0037] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0039] For reference Figures 1 to 4 As shown in the drawings, according to the embodiments of the present application, a leaf laying device is provided, comprising: a lifting mechanism 1, the lifting mechanism 1 is arranged in the feeding station in a lifting manner, the lifting mechanism 1 can lift the tobacco stack transported to the feeding station to the material taking station; a clamping mechanism 2, the clamping mechanism 2 is movably arranged between the material taking station and the material receiving station, the clamping mechanism 2 is used for clamping the tobacco leaves in the tobacco stack at the material taking station and transferring the tobacco leaves to the material receiving station; a leaf laying table, the leaf laying table is arranged in the material receiving station.

[0040] In this embodiment, the lifting mechanism 1 and the clamping mechanism 2 are set to replace the manual leaf laying operation, reducing the enterprise's demand for a large number of manpower, reducing the cost of recruitment, training and other costs caused by personnel flow, and also reducing the burden of human resource management of the enterprise, so that the enterprise has more advantages in human cost control. Further, the automatic operation of the lifting mechanism 1 and the clamping mechanism 2 greatly speeds up the transfer speed of the tobacco leaves from the feeding station to the receiving station compared with the traditional manual leaf laying, reduces the time consumption of the leaf laying process, and thus improves the production efficiency of the entire tobacco processing production line. At the same time, the clamping mechanism 2 can accurately clamp the tobacco leaves and place them evenly on the leaf laying table, effectively avoiding the problems of uneven and irregular leaf laying caused by human factors during manual leaf laying, ensuring the consistency and stability of the leaf laying, and providing better quality tobacco leaves for the subsequent unrolling process.

[0041] The lifting mechanism 1 is installed at the feeding station and has a lifting function, which ensures that the clamping mechanism 2 can stably clamp the tobacco leaves in the tobacco pile during operation. Specifically, the lifting mechanism 1 can stably lift the tobacco pile from the initial height of the feeding station to the required height of the material taking station through a hydraulic system, an electric screw drive or other suitable power transmission methods. In this way, the tobacco pile can be at a position height that is convenient for the clamping mechanism 2 to operate, ensuring the smooth operation of the subsequent tobacco clamping action.

[0042] The clamping mechanism 2 is arranged between the material taking station and the material receiving station and has the ability to move flexibly between the material taking station and the material receiving station. When the tobacco pile is at the material taking station and is lifted to the appropriate height by the lifting mechanism 1, the clamping mechanism 2 starts to operate. At this time, the clamping mechanism 2 accurately transfers the tobacco leaves to the material receiving station according to the predetermined moving path and speed after taking the tobacco leaves from the tobacco pile. It should be noted that the clamping mechanism 2 can use a mechanical gripper to grab the tobacco leaves. Specifically, the mechanical gripper can adjust the clamping force and angle according to the shape, size and stacking condition of the tobacco leaves through precise opening and closing control, and stably clamp the tobacco leaves.

[0043] The leaf laying table (not shown in the figure) is located at the material receiving station and is used to receive the tobacco leaves transferred by the clamping mechanism 2. The surface of the leaf laying table has a certain flatness and friction to ensure that the tobacco leaves placed by the clamping mechanism 2 can be stably placed on it and will not easily slide or shift.

[0044] In some possible implementation embodiments disclosed in the present application, referring to Figure 2As shown, the lifting mechanism 1 comprises: a frame base 11 arranged on the ground or support platform of the feeding station; a screw rod assembly 12 rotatably arranged on the frame base 11, and a screw pair 13 is drivingly connected to the screw rod assembly 12 through a threaded structure; a driving motor 14 arranged on the frame base 11, the output end of the driving motor 14 is connected with the screw rod assembly 12, and the driving motor 14 is used to drive the screw rod assembly 12 to move; and a lifting platform 15 fixedly connected with the screw pair 13, and the lifting platform 15 is used to carry the tobacco stack.

[0045] In this embodiment, the driving motor 14 drives the screw rod assembly 12 to rotate, and due to the threaded cooperation between the screw rod assembly 12 and the screw pair 13, the rotational movement of the driving motor 14 can be accurately converted into the linear lifting movement of the lifting platform 15. It should be noted that compared with other lifting modes, the screw rod transmission can realize more precise height adjustment, and can accurately lift the tobacco stack to the required accurate height of the material taking station, which is beneficial to the stable and efficient clamping operation of the clamping mechanism 2 on the tobacco leaves.

[0046] Specifically, the two vertical support columns are fixedly connected to the ground foundation of the feeding station through anchor bolts, so as to ensure the stability of the entire frame base 11 during lifting and prevent displacement or shaking due to stress.

[0047] Specifically, two screw rods are symmetrically installed on the inner sides of the two vertical support columns of the door-shaped frame base 11. The upper and lower ends of each screw rod are connected with the corresponding transverse connecting beam through a bearing seat, so as to ensure the stability and low friction resistance of the screw rod during rotation.

[0048] Specifically, the screw pair 13 can be a nut seat. Specifically, the nut seat matched with each screw rod is sleeved on the screw rod, and the nut in the nut seat is tightly matched with the screw rod to form a screw transmission pair. In addition, the two nut seats can be rigidly connected through a transverse connecting cross bar, so as to ensure that the two nut seats can move synchronously during lifting, so that the tobacco stack can be stably lifted horizontally.

[0049] Specifically, the screw threads of the screw pair 13 and the screw rod assembly 12 can adopt trapezoidal threads or ball screw threads, which have good transmission efficiency and self-locking performance.

[0050] The driving motor 14 can be a servo motor, a stepping motor or a three-phase asynchronous motor, etc. Specifically, the driving motor 14 is installed on the transverse connecting beam at the bottom of the door-shaped frame base 11, and the output shaft of the driving motor 14 can be connected to the lower end of the screw rod through a shaft coupling, and the screw rod is driven to rotate by the forward and reverse rotation of the driving motor 14.

[0051] The lifting platform 15 can be a long strip-shaped steel plate. Specifically, when the screw pair 13 is provided with a transverse connecting cross bar, the lifting platform 15 can be connected to the transverse connecting cross bar.

[0052] In some possible implementation embodiments disclosed in the present application, the lifting mechanism 1 further comprises a first sensor, which is arranged on the frame base 11 and is used to sense the lifting height of the tobacco stack.

[0053] In this embodiment, the first sensor can monitor the lifting height of the tobacco stack in real time. It should be noted that in the tobacco processing process, different production links can have accurate requirements for the height of the tobacco stack lifted to the material taking station. For example, in order to effectively clamp the tobacco leaves, the tobacco stack needs to be at a specific height range. The first sensor can ensure that the lifting platform 15 accurately lifts the tobacco stack to this optimal height, so that the clamping mechanism 2 can clamp the tobacco leaves at the best working posture and angle, thereby improving the accuracy and efficiency of clamping.

[0054] The first sensor can determine the lifting height of the tobacco stack according to photoelectric sensing, ultrasonic sensing or electromagnetic sensing, etc. For example, when the first sensor determines the lifting height of the tobacco stack according to photoelectric sensing, the first sensor can emit a beam of light with a specific frequency. When the tobacco stack blocks the beam of light during the lifting process, the reflection, refraction or reception of the light changes, and the photoelectric sensor inside the first sensor converts this change into an electric signal, which is then analyzed and calculated by the signal processing circuit to obtain the height position information of the tobacco stack relative to the first sensor. When the first sensor determines the lifting height of the tobacco stack according to ultrasonic sensing, the first sensor can emit an ultrasonic pulse. The ultrasonic wave is reflected back after encountering the tobacco stack during the transmission process. According to the time difference between the emission and reception of the ultrasonic wave and the propagation speed of the ultrasonic wave in the air, the distance between the tobacco stack and the first sensor is determined, and the lifting height of the tobacco stack is calculated.

[0055] Specifically, the baffle height information acquired by the first sensor is transmitted to the control system of the lifting mechanism 1 in real time. In the normal working state, the control system will pre-set the target height value that the baffle needs to be lifted to. When the actual height information fed back by the first sensor approaches or reaches this target height, the control system will issue corresponding instructions. For example, if a motor-driven screw assembly 12 is used for lifting, the control system can reduce the speed of the motor, so that the baffle approaches the target height at a slower speed, thereby achieving accurate positioning. Once the target height is reached, the control system will immediately stop the operation of the motor, ensuring that the baffle is stably stopped at the height required by the material taking station. In addition, if abnormal conditions occur during lifting, such as the baffle rising too fast, exceeding the pre-set safe height range, etc., the first sensor will also timely feed back these abnormal information to the control system, and the control system will take corresponding emergency braking or alarm measures to ensure the safe operation of the lifting mechanism 1 and the entire leaf laying device, prevent the equipment from being damaged, the tobacco leaves from being scattered or other safety accidents from occurring due to excessive lifting of the baffle.

[0056] In some possible implementation embodiments disclosed in the present application, referring to Figure 1 The leaf laying device further comprises a linear module 3, which is arranged between the material taking station and the material receiving station, and the clamping mechanism 2 is connected with the linear module 3, and the linear module 3 is used to drive the clamping mechanism 2 to move.

[0057] In this embodiment, the linear module 3 can provide the clamping mechanism 2 with an accurate linear movement path. It should be noted that during the tobacco leaf laying process, the clamping mechanism 2 needs to reciprocate between the material taking station and the material receiving station. The linear module 3 can ensure the clamping mechanism 2 to move accurately along the preset straight trajectory through its high-precision transmission mechanism, i.e. the combination of the motor-driven bevel gear and the bevel gear rack. The bevel gear effectively transmits and converts the rotary power of the motor, and engages with the bevel gear rack to drive its movement, which helps the clamping mechanism 2 to accurately reach the tobacco leaf position of the material taking station for clamping, and accurately place the tobacco leaves on the leaf laying table of the material receiving station, thereby improving the accuracy and quality of leaf laying.

[0058] The leaf laying device further comprises a support, which is located between the material taking station and the material receiving station, and the support is used to mount the linear module 3.

[0059] The linear module 3 is provided with a sliding block, which can move linearly along the guide rail of the linear module 3, thereby driving the clamping mechanism 2 to shuttle between the material taking station and the material receiving station. Specifically, the clamping mechanism 2 can be connected with the sliding block through a mechanical connection structure, such as a metal connecting piece, to ensure that the driving force of the linear module 3 can be effectively transmitted, so that the clamping mechanism 2 can move accurately following the movement of the linear module 3.

[0060] In some possible implementations disclosed in this application, see Figure 1 、 Figure 3 and Figure 4 As shown, the clamping mechanism 2 includes: a clamping component 21, the clamping component 21 includes a plurality of movable pins 221, and the working states of the plurality of movable pins 221 include a first state and a second state. When the plurality of movable pins 221 are working in the first state, two adjacent movable pins 221 are opened to insert into the tobacco stack; when the plurality of movable pins 221 are working in the second state, two adjacent movable pins 221 are closed to clamp tobacco leaves.

[0061] In this embodiment, the provision of movable pins 221 enables more precise tobacco leaf clamping. It should be noted that tobacco leaves are irregularly shaped and relatively fragile, and traditional clamping methods may damage them or provide a loose grip. However, the movable pins 221, when open, can be inserted into the gaps between leaves and then closed to clamp the leaves, better adapting to the shape and stacking of the leaves.

[0062] The clamping mechanism 2 further comprises a mounting base plate, on which a plurality of movable pins 221 are mounted. Specifically, the plurality of movable pins 221 are arranged at equal intervals along the length direction of the mounting base plate.

[0063] The clamping mechanism 2 further includes a drive assembly, also mounted on the mounting base. The drive assembly is connected to the movable pins 221 and can be a mechanical linkage, pneumatic, or hydraulic device, for driving the movable pins 221 to open or close. For example, if the drive assembly is a mechanical linkage, a linkage system is connected to the rear ends of all movable pins 221. When external force is applied to a point on the linkage, the linkage undergoes rotational or translational motion, thereby driving each movable pin 221 to rotate or linearly move about its mounting axis, gradually increasing the distance between adjacent movable pins 221 and forming an open position. During this process, the movable pins 221 are gradually inserted into the tobacco stack. Once the movable pins 221 have completed their insertion into the tobacco stack, they enter a second, closed state. At this point, the mechanical linkage reverses its motion, bringing adjacent movable pins 221 closer together until they firmly clamp the tobacco leaves.

[0064] In some possible implementations disclosed in this application, see Figure 1 As shown, the clamping mechanism 2 further includes: a lifting component 22, which is connected to the clamping component 21, and is used to drive the clamping component 21 to move up and down.

[0065] In this embodiment, the lifting assembly 22 is arranged to increase the vertical movement capability of the gripping mechanism 2 on the basis of horizontal movement, so that the gripping mechanism 2 can be positioned flexibly in three-dimensional space and better adapt to the actual situation of the tobacco column and the laying table.

[0066] The lifting assembly 22 can include a power source, a transmission structure, and a guide structure, etc. The power source can be an electric motor, a pneumatic cylinder, or a hydraulic cylinder, etc. For example, the electric motor outputs power through the rotation of the motor shaft, the pneumatic cylinder uses the pressure of compressed air to push the piston to move to generate power, and the hydraulic cylinder relies on the pressure of hydraulic oil to drive the piston rod to extend and retract. The transmission structure is used to convert the power of the power source into the vertical lifting movement of the gripping assembly 21. The transmission structure can be a ball screw transmission, a synchronous belt transmission, and a chain transmission, etc. Taking the ball screw transmission as an example, the ball screw is connected with the power source, when the power source drives the ball screw to rotate, the nut cooperating with the screw rod will move linearly along the axis direction of the screw rod, and the gripping assembly 21 is fixedly connected with the nut, so as to realize the lifting of the gripping assembly 21. The guide structure is mainly to ensure that the gripping assembly 21 maintains stable linear motion track during lifting, and prevents it from deviating or shaking. The combination of linear guide and slider can be adopted, the slider is installed on the gripping assembly 21, and the linear guide is fixed on the rack or other support structure, the slider slides up and down along the guide rail, which provides accurate guidance for the lifting of the gripping assembly 21.

[0067] In some possible implemented embodiments disclosed in the present application, the gripping mechanism 2 further comprises a second sensor, the second sensor is arranged on the gripping assembly 21, and the second sensor is used to sense the distance between the gripping assembly 21 and the tobacco column.

[0068] In this embodiment, when the laying operation starts, the second sensor can accurately measure the distance between the gripping assembly 21 and the tobacco column. The distance information can help to determine the starting position of the first gripping of tobacco leaves, thereby indirectly controlling the initial thickness of the laid tobacco leaves. For example, if it is desired to lay thinner initial thickness of tobacco leaves, the control system of the gripping assembly 21 can accurately control the depth of the gripping assembly 21 according to the distance feedback of the second sensor, so that the movable needle 221 only grips a small amount of tobacco leaves for placement, thereby starting a thinner tobacco layer on the laying table.

[0069] Among them, the second sensor can measure the distance between the clamping mechanism 2 and the cigarette stack based on laser ranging, ultrasonic ranging, etc. For example, when the second sensor measures the distance between the clamping mechanism 2 and the cigarette stack based on laser ranging, the second sensor can emit a laser beam towards the cigarette stack, and the laser is reflected on the surface of the cigarette stack and received by the second sensor. According to the time difference between the laser emission and reception and the propagation speed of the laser in the air, the distance between the clamping component 21 and the cigarette stack can be accurately calculated. When the second sensor measures the distance between the clamping mechanism 2 and the cigarette stack based on ultrasonic ranging, the second sensor can emit an ultrasonic pulse, and the ultrasonic wave is reflected back after encountering the cigarette stack. The distance value is determined according to the time interval between emission and reception and the propagation speed of the ultrasonic wave in the air.

[0070] The second sensor is located on the gripper assembly 21, the part that directly interacts with the cigarette stack. Specifically, when the gripper mechanism 2, working in concert with the linear module 3 and the lifting assembly 22, approaches the cigarette stack, the second sensor activates its sensing function, acquiring real-time distance information between the gripper mechanism 2 and the cigarette stack, providing critical data support for subsequent gripping operations and leaf thickness control.

[0071] In some possible implementations disclosed in this application, see Figure 1 As shown, at least two clamping mechanisms 2 are provided, and at least two clamping mechanisms 2 are parallel to each other.

[0072] In this embodiment, when at least two parallel clamping mechanisms 2 are provided, tobacco leaf clamping operations can be performed simultaneously. For example, during tobacco processing, tobacco stacks typically have a certain width and length, and a single clamping mechanism 2 has a limited range of tobacco leaf clamping at a time. However, multiple parallel clamping mechanisms 2 can be inserted into tobacco stacks at different locations simultaneously, clamping more tobacco leaves at a time and then transferring them to the leaf laying table. This increases the number of tobacco leaves transferred to the leaf laying table per unit time, improving the overall efficiency of leaf laying. This can effectively shorten the leaf laying process, especially in large-scale tobacco processing and production.

[0073] The number of the clamping mechanisms 2 can be two, three or four, etc., which is not limited in the present application. In this embodiment, two clamping mechanisms 2 are provided.

[0074] In some possible implementations disclosed in this application, see Figure 2 As shown, the leaf laying device also includes: a feeding mechanism, which is used to transport the cigarette stack to the feeding station.

[0075] In this embodiment, the feeding mechanism is provided to realize automatic transportation of the cigarette stack to the feeding station, making the workflow of the entire leaf laying device more automated.

[0076] The feeding mechanism can be a belt conveying mechanism. Specifically, when the whole leaf laying device is started and a tobacco ridge needs to enter the feeding station, the control system of the leaf laying device sends a start command to the transmission device of the feeding mechanism, and the power source of the transmission device starts to work and rotates at a set speed, driving the conveying platform to move through the corresponding transmission components. For example, if the belt transmission, the motor drives the driving belt pulley to rotate, and the belt rotates under the action of friction, and the tobacco ridge is smoothly transported to the feeding station along with the uniform movement of the belt.

[0077] In the above embodiment, when the lifting mechanism 1 lifts the tobacco ridge, referring to Figure 2 The tobacco ridge is located on the feeding mechanism, and the side of the feeding mechanism close to the tobacco ridge is provided with a baffle 5.

[0078] Here, when the lifting mechanism 1 lifts the tobacco ridge, the tobacco ridge is located on the feeding mechanism, and due to the lifting action, a certain vibration or shaking may occur. By providing the baffle 5, the tobacco ridge can be effectively prevented from sliding off the feeding mechanism.

[0079] The baffle 5 is distributed on both sides of the tobacco ridge, forming a surrounding situation. Specifically, when the feeding mechanism is a conveying belt structure, the baffle 5 can be arranged along the two side edges of the conveying belt, and has a certain height to prevent the tobacco ridge from sliding from the side during lifting due to shaking.

[0080] It is easy for those skilled in the art to understand that the above advantageous modes can be freely combined and superimposed without conflict.

[0081] The above is only a preferred embodiment of the present application, and does not limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only a preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A leaf laying device, characterized in that: include: A lifting mechanism (1), wherein the lifting mechanism (1) is arranged at a feeding station in a liftable manner, and the lifting mechanism (1) is capable of lifting the cigarette stack transported to the feeding station to the retrieving station; A clamping mechanism (2), the clamping mechanism (2) being movably arranged between the material taking station and the material receiving station, the clamping mechanism (2) being used for clamping tobacco leaves in the tobacco stack at the material taking station and transferring the tobacco leaves to the material receiving station; A leaf laying platform is arranged at the material receiving station.

2. The leaf laying device according to claim 1, characterized in that: The lifting mechanism (1) comprises: A frame base (11), the frame base (11) being arranged on the ground or a support platform of the feeding station; A screw assembly (12), the screw assembly (12) being rotatably disposed on the frame base (11), and the screw assembly (12) being connected to a screw pair (13) via a threaded structure; a drive motor (14), the drive motor (14) being arranged on the frame base (11), the output end of the drive motor (14) being connected to the screw assembly (12), and the drive motor (14) being used to drive the screw assembly (12) to move; A lifting platform (15) is fixed relatively to the spiral pair (13), and the lifting platform (15) is used to carry the cigarette stack.

3. The leaf laying device according to claim 2, characterized in that: The lifting mechanism (1) further comprises: A first sensor is provided on the frame base (11), and is used for sensing the lifting height of the cigarette stack.

4. The leaf laying device according to claim 1, characterized in that: The leaf laying device also includes: A linear module (3) is provided between the material taking station and the material receiving station, the clamping mechanism (2) is connected to the linear module (3), and the linear module (3) is used to drive the clamping mechanism (2) to move.

5. The leaf laying device according to claim 1, characterized in that: The clamping mechanism (2) comprises: A clamping assembly (21), comprising a plurality of movable pins (221), wherein the working states of the plurality of movable pins (221) include a first state and a second state. When the plurality of movable pins (221) are in the first state, two adjacent movable pins (221) are opened to insert into the tobacco stack; when the plurality of movable pins (221) are in the second state, two adjacent movable pins (221) are closed to clamp the tobacco leaves.

6. The leaf laying device according to claim 5, characterized in that: The clamping mechanism (2) further comprises: A lifting component (22) is connected to the clamping component (21), and the lifting component (22) is used to drive the clamping component (21) to rise and fall.

7. The leaf laying device according to claim 6, characterized in that: The clamping mechanism (2) further comprises: A second sensor is provided on the clamping assembly (21), and is used to sense the distance between the clamping assembly (21) and the cigarette stack.

8. The leaf laying device according to claim 1, characterized in that: At least two of the clamping mechanisms (2) are provided, and at least two of the clamping mechanisms (2) are parallel to each other.

9. The leaf laying device according to claim 1, characterized in that: The leaf laying device also includes: A feeding mechanism is used to transport the cigarette stack to the feeding station.

10. The leaf laying device according to claim 9, characterized in that: When the lifting mechanism (1) lifts the cigarette stack, the cigarette stack is located on the feeding mechanism, and a baffle (5) is provided on a side of the feeding mechanism close to the cigarette stack.

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