Automatic feeding device and method for threshing and redrying based on standard frame loading of selected tobacco leaves after selection

Abstract

The present invention discloses an automatic feeding device for threshing and redrying based on standard framing of selected tobacco leaves, including a tobacco frame. Multiple layers of selected tobacco leaves are installed in the tobacco frame from bottom to top in a layered manner. The multiple layers of tobacco leaves are staggered longitudinally in sequence. Each layer of tobacco leaves includes one or more pieces of tobacco leaves. The stalk heads of each piece of tobacco leaf face outward and are flush. The thickness of each piece of tobacco leaf is the same as the thickness of the tobacco leaves required on the leaf-laying feeding belt. The automatic feeding device further includes a compaction mechanism for compacting the tobacco leaves in the tobacco frame so that each piece of tobacco leaf forms a standard tobacco layer. The automatic feeding device further includes a feeding mechanism for picking up a single layer of the standard tobacco layer, loosening the tobacco leaves in the standard tobacco layer, and spreading and feeding the loosened tobacco leaves onto the leaf-laying feeding belt at the tobacco leaf feeding angle required on the leaf-laying feeding belt. This device realizes automatic feeding, and both the feeding uniformity and the feeding angle meet the feeding requirements for threshing and redrying. The present invention also discloses an automatic feeding method for threshing and redrying based on standard framing of selected tobacco leaves.

Description

Technical Field

[0001] The invention relates to the field of leaf threshing and redrying production, and in particular to an automatic feeding device for leaf threshing and redrying based on standard framing of selected tobacco leaves, and also to an automatic feeding method for leaf threshing and redrying based on standard framing of selected tobacco leaves. Background Art

[0002] The tobacco leaf feeding process is the first link for tobacco leaves to enter the leaf threshing and redrying production line. Due to the large number of tobacco leaf grades and irregular incoming material conditions, most of them currently use leaf laying feeding belts to achieve this feeding function: three to four leaf laying feeding belts are configured and multiple manual feeding stations are set on both sides of the belts. The original packaged tobacco leaves or selected framed tobacco leaves are manually placed on the leaf laying belts according to the established speed and grade ratio. After the tobacco leaves are cut, they are aggregated and put into the leaf threshing and redrying production line. In order to meet customers' requirements for tobacco leaf grade ratio and feeding speed, the entire feeding process requires about 30-40 leaf laying stations, and more than 100 people are needed for three shifts in the morning, afternoon and evening.

[0003] Due to the difficulty in recruiting workers and the increasing labor costs, various redrying companies have tried to use the method of automatic feeding of whole bales of tobacco or feeding of whole frames of selected tobacco (automatic feeding by turning boxes) to replace manual leaf laying and feeding, in order to reduce the labor in the feeding process. Since they cannot solve the problems of customers' uniform feeding of grade ratios and the inability to cut tobacco leaves, these two automatic feeding methods cannot be truly applied to the actual leaf threshing and redrying production. Compared with the two automatic feeding modes of feeding by whole bales and feeding by turning boxes, customers tend to prefer the traditional multi-station leaf laying and feeding mode.

[0004] Some companies are studying the use of robots (manipulators) to automatically feed tobacco leaves instead of manually laying and feeding leaves. However, due to problems such as non-standard raw tobacco materials and entanglement between tobacco leaves, factors such as the feeding speed, formula ratio and chemical composition uniformity control of tobacco leaves cannot achieve the expected results, so it is difficult to apply it in actual production and processing.

[0005] At present, most of the redrying enterprises select tobacco leaves from the production areas (packed with hemp flakes). There are two ways to pack the selected tobacco leaves: one is to sew the hemp flakes into cigarette packs and then store them in the original cigarette frames; the other is to place the selected tobacco leaves in the original cigarette frames in a disorderly manner. When feeding, the whole frame of selected tobacco leaves is transported to the feeding process and fed into the production line through multiple manual leaf laying stations.

[0006] Given that most redrying plants have achieved a selection rate of 70-80% for original bale tobacco (subsequently, the selection requirements of each industrial customer for raw tobacco will gradually cover), even the small amount of unselected tobacco leaves can be preliminarily sorted and framed through negotiation. Therefore, it is possible to achieve the standardized treatment of the incoming tobacco leaves before feeding. In summary, the technical problems to be solved by the present invention are how to standardize the framing of the selected tobacco leaves, achieve automatic feeding, meet the uniformity of tobacco leaf feeding, and make the feeding angle controllable. Summary of the Invention

[0007] In view of this, one of the objectives of the present invention is to provide an automatic feeding device for threshing and redrying based on the standard framing of selected tobacco leaves, so as to solve the technical problems of standardizing the framing of selected tobacco leaves, achieving automatic feeding, meeting the uniformity of tobacco leaf feeding, and making the feeding angle controllable. Another objective of the present invention is to provide an automatic feeding device for threshing and redrying based on the standard framing of selected tobacco leaves.

[0008] One of the objectives of the present invention is achieved through the following technical solutions:

[0009] The automatic feeding device for threshing and redrying based on the standard framing of selected tobacco leaves includes a tobacco frame. Multiple layers of selected tobacco leaves are installed in the tobacco frame in layers from bottom to top. The multiple layers of tobacco leaves are staggered longitudinally in sequence. Each layer of tobacco leaves includes one or more pieces of tobacco leaves. The stem heads of each piece of tobacco leaf face outward and are flush. The thickness of each piece of tobacco leaf is the same as the required thickness of the tobacco leaves on the leaf-laying and feeding belt. The automatic feeding device further includes a compaction mechanism for compacting the tobacco leaves in the tobacco frame to form a standard tobacco layer for each piece of tobacco leaf, and the automatic feeding device further includes a feeding mechanism for peeling off a single layer of the standard tobacco layer, loosening the tobacco leaves in the standard tobacco layer, and spreading the loosened tobacco leaves on the leaf-laying and feeding belt according to the required tobacco leaf feeding angle on the leaf-laying and feeding belt.

[0010] Furthermore, a partitioning device is provided under the stem head of each layer of tobacco leaves in the tobacco frame.

[0011] Furthermore, each piece of tobacco leaf in the tobacco frame is transferred from a winnowing-shaped standard box at one time. The stem heads of the tobacco leaves in the standard box are vertically adjacent to its end face. The width of the standard box is adapted to the distance between the two columns in the length direction of the tobacco frame.

[0012] Furthermore, the automatic feeding device further includes a nicotine content detection device for each piece of tobacco leaf, and the average nicotine content of the tobacco leaves in the tobacco frame obtained according to the nicotine content of each piece of tobacco leaf is marked on the tobacco frame.

[0013] Furthermore, the feeding mechanism includes a feeding robot and a tobacco layer loosening mechanism for loosening tobacco leaves of a standard tobacco layer; the feeding robot includes a control system, a multi-axis robotic arm and a tobacco layer chuck, the tobacco layer chuck includes a mounting seat connected to the execution end of the multi-axis robotic arm, a fixed upper chuck and a movable lower chuck are relatively arranged on the mounting seat, the movable lower chuck includes a swing arm rotatably arranged on the mounting seat, an arc-shaped blade is rotatably arranged on the end of the swing arm, the opening of the arc-shaped blade faces one side of the fixed upper chuck, the arc-shaped blade is consistent with the rotation direction of the swing arm, the fixed upper chuck is located in the rotation direction of the arc-shaped blade, the swing arm and the arc-shaped blade are driven to rotate by a driving mechanism, the width of the fixed upper chuck and the arc-shaped blade is consistent with the width of the standard tobacco layer, and a plurality of steel needles that can be inserted into tobacco leaves and are arranged along the width direction of the fixed upper chuck are fixedly arranged on the side of the fixed upper chuck away from the movable lower chuck.

[0014] The second object of the present invention is achieved through the following technical solutions:

[0015] The automatic feeding method for threshing and redrying tobacco leaves based on standard framing of selected tobacco leaves comprises the following steps:

[0016] Step 1: Load the selected tobacco leaves into the tobacco frame from bottom to top in layers, with each layer of tobacco leaves staggered in sequence in the longitudinal direction. Each layer of tobacco leaves includes one or more pieces of tobacco leaves, and the stems of each piece of tobacco leaves are facing outwards and flush. The thickness of each piece of tobacco leaves is the same as the thickness of tobacco leaves required on the leaf laying and feeding belt;

[0017] Step 2: Using a compacting mechanism to compact the tobacco leaves in the tobacco frame so that each piece of tobacco leaves forms a standard tobacco layer;

[0018] Step 3: Use the feeding mechanism to peel off the standard tobacco layer in a single layer, loosen the tobacco leaves of the standard tobacco layer, and lay the loose tobacco leaves flat on the leaf laying feeding belt according to the tobacco leaf delivery angle required on the leaf laying feeding belt.

[0019] Furthermore, a partition device is provided under each layer of tobacco stem heads in the tobacco frame.

[0020] Furthermore, each piece of tobacco in the tobacco frame is transferred from a dustpan-shaped standard box at one time, the stems of the tobacco leaves in the standard box are vertically close to the end surface, and the width of the standard box is adapted to the distance between the two columns in the length direction of the tobacco frame.

[0021] Furthermore, step (1) also includes testing the nicotine content of each piece of tobacco leaf, calculating the average nicotine content of each frame of tobacco according to the nicotine content of each piece of tobacco leaf and marking it, and in step (3) selecting tobacco frames with appropriate nicotine content of tobacco leaves for feeding according to various formula feeding requirements.

[0022] Furthermore, the feeding mechanism includes a feeding robot and a tobacco layer loosening mechanism for loosening tobacco leaves of a standard tobacco layer; the feeding robot includes a control system, a multi-axis robotic arm and a tobacco layer chuck, the tobacco layer chuck includes a mounting seat connected to the execution end of the multi-axis robotic arm, a fixed upper chuck and a movable lower chuck are relatively arranged on the mounting seat, the movable lower chuck includes a swing arm rotatably arranged on the mounting seat, an arc-shaped blade is rotatably arranged on the end of the swing arm, the opening of the arc-shaped blade faces one side of the fixed upper chuck, the arc-shaped blade is consistent with the rotation direction of the swing arm, the fixed upper chuck is located in the rotation direction of the arc-shaped blade, the swing arm and the arc-shaped blade are driven to rotate by a driving mechanism, the width of the fixed upper chuck and the arc-shaped blade is consistent with the width of the standard tobacco layer, and a plurality of steel needles that can be inserted into tobacco leaves and are arranged along the width direction of the fixed upper chuck are fixedly arranged on the side of the fixed upper chuck away from the movable lower chuck.

[0023] The beneficial effects of the present invention are:

[0024] The automatic feeding device for threshing and redrying of tobacco leaves based on the standard framing of selected tobacco leaves of the present invention loads the selected tobacco leaves into the tobacco frame in layers and staggers the layers of tobacco leaves in sequence in the longitudinal direction, the thickness of each layer of tobacco leaves is the same as the thickness of tobacco leaves required on the leaf-laying and feeding belt, the stem heads of each piece of tobacco leaves are facing outward and are flat, and the tobacco leaves in the tobacco frame form a standard tobacco layer after being compacted by the compacting mechanism, and the feeding mechanism peels off the standard tobacco layer in a single layer, and after the tobacco leaves are loosened, they are flatly laid and fed onto the leaf-laying and feeding belt at the tobacco leaf feeding angle required on the leaf-laying and feeding belt, thereby realizing automatic feeding and meeting the requirements of uniformity of feeding and controllable feeding angle of tobacco leaves for threshing and redrying. The automatic feeding method for threshing and redrying based on the standard framing of selected tobacco leaves of the present invention has a simple process and is easy to implement.

[0025] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings, in which:

[0027] Figure 1 It is a top view of the separator contained in the dustpan-shaped standard box of the present invention.

[0028] Figure 2 It is a left sectional view of the separator contained in the dustpan-shaped standard box of the present invention.

[0029] Figure 3It is a top view of the selected tobacco leaves after they are pre-arranged and loaded into a dustpan-shaped standard box containing a partition device in the present invention.

[0030] Figure 4 It is a left side cross-sectional view after the selected tobacco leaves are pre-arranged and loaded into a shaped standard box containing a partition device in the present invention.

[0031] Figure 5 It is a front view after a plurality of shaped tobacco leaves are loaded into the original tobacco frame in layers in the present invention.

[0032] Figure 6 It is a left view after a plurality of shaped tobacco leaves are loaded into the original tobacco frame in layers in the present invention.

[0033] Figure 7 It is a top view after a plurality of shaped tobacco leaves are loaded into the original tobacco frame in layers in the present invention.

[0034] Figure 8 It is a front view of the arrangement of the feeding mechanism of the present invention on the leaf laying feeding belt.

[0035] Figure 9 It is a top view of the arrangement of the feeding mechanism on the leaf laying feeding belt in the present invention.

[0036] Figure 10 It is a left view of the smoke layer clamp of the present invention when clamping a standard smoke layer.

[0037] Figure 11 It is a left view of the smoke layer clamp of the present invention when the standard smoke layer is not clamped.

[0038] Figure 12 It is a structural schematic diagram of the loose system in the present invention.

[0039] In the figure: a shaped standard box 1, a partition device 2, each tobacco leaf 3, a tobacco frame 4, a standard tobacco layer 5, a column 6, a feeding robot 7, a multi-axis robotic arm 8, a tobacco layer chuck 9, a roller 10, a leaf laying and feeding belt 11, an image recognizer 12, a mounting seat 13, a fixed upper chuck 14, a swing arm 15, an arc-shaped blade 16, a steel needle 17, and a baffle 18. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.

[0041] like Figures 1-12As shown, the automatic feeding device for beating and re-roasting tobacco leaves based on the standard framing of selected tobacco leaves comprises a tobacco frame 4, which is an original tobacco frame, in which multiple layers of selected tobacco leaves are layered from bottom to top, and the multiple layers of tobacco leaves are staggered in sequence in the longitudinal direction, and each layer of tobacco leaves comprises one or more pieces of tobacco leaves, and the stem ends of each piece of tobacco leaves 3 are facing outward and flat, and the thickness of each piece of tobacco leaves 3 is the same as the required tobacco leaf thickness on the leaf laying feeding belt 11, and the automatic feeding device also includes a compacting mechanism for compacting the tobacco leaves in the tobacco frame 4 so that each piece of tobacco leaves 3 forms a standard tobacco layer 5, and the automatic feeding device also includes a feeding mechanism for peeling off the standard tobacco layer 5 in a single layer, loosening the standard tobacco layer 5, and laying the loose tobacco leaves flatly onto the leaf laying feeding belt 11 at the tobacco leaf delivery angle required on the leaf laying feeding belt 11.

[0042] The compacting mechanism can be a weight block or a pressure plate vertically arranged at the end of a hydraulic rod for compaction.

[0043] The device frames the selected tobacco leaves in a standard frame to obtain a standard tobacco layer 5 with the same thickness as the tobacco leaves required on the leaf laying and feeding belt 11, and the tobacco leaf stem ends are uniformly facing outward and flush. The feeding mechanism peels off the standard tobacco layer 5 in a single layer, loosens it, and then spreads it flat on the leaf laying and feeding belt 11 to achieve automatic feeding, and the feeding uniformity and feeding angle meet the requirements for leaf threshing and re-roasting.

[0044] Preferably, each layer of tobacco leaves in the tobacco frame 4 includes two pieces of tobacco leaves, and the stems of the two pieces of tobacco leaves are facing away from each other.

[0045] A partition device 2 is provided below the middle of each layer of tobacco stem heads in the tobacco frame 4 .

[0046] Specifically, a partition device is arranged under the middle of each tobacco leaf stem head relatively inside the tobacco frame.

[0047] The partition device 2 can be a partition strip, specifically a tobacco rod formed by twisting tobacco leaves.

[0048] Each piece of tobacco leaf 3 in the tobacco frame 4 is transferred from the dustpan-shaped standard shaping box 1 at one time. The stems of the tobacco leaves in the standard shaping box 1 are vertically close to the end face thereof. The width of the standard shaping box 1 is adapted to the distance between the two uprights 6 in the length direction of the tobacco frame 4. By using the standard shaping box 1, it is convenient to control the thickness and stem angle of each piece of tobacco leaf. The standard shaping box 1 transfers the tobacco leaves to the tobacco frame 4 and then takes them out. The taking-out method is to withdraw toward the end face side of the standard shaping box 1.

[0049] The partition device 2 can be placed in the standard shaping box 1 along the width direction of the standard shaping box 1 in advance, and then the selected tobacco leaves are placed in the standard shaping box 1. Of course, the partition device 2 can also be placed on the lower layer of tobacco leaves before transferring the tobacco leaves to the tobacco frame 4.

[0050] The automatic feeding device further includes a nicotine content detection device for each piece of tobacco leaf. The tobacco leaf frame 4 is marked with the average nicotine content of the tobacco leaves in the frame obtained according to the nicotine content of each piece of tobacco leaf, providing conditions for controlling the chemical composition (nicotine) during subsequent feeding. The nicotine content detection device for tobacco leaves is a prior art.

[0051] The feeding mechanism includes a feeding robot 7 and a tobacco layer loosening mechanism for loosening the tobacco leaves in the standard tobacco layer 5; the feeding robot 7 includes a control system, a multi-axis robotic arm 8, and a tobacco layer chuck 9. The tobacco layer chuck 9 includes a mounting base 13 connected to the execution end of the multi-axis robotic arm 8. Oppositely arranged on the mounting base 13 are a fixed upper chuck 14 and a movable lower chuck. The movable lower chuck includes a swing arm 15 rotatably arranged on the mounting base 13. An arc-shaped cutting edge 16 is rotatably arranged at the end of the swing arm 15. The opening of the arc-shaped cutting edge 16 faces the side of the fixed upper chuck 14. The arc-shaped cutting edge 16 is in the same rotation direction as the swing arm 15. The fixed upper chuck 14 is located within the rotation direction of the arc-shaped cutting edge 16. The swing arm 15 and the arc-shaped cutting edge 16 are driven to rotate by a driving mechanism. Specifically, the driving mechanism is a motor. The widths of the fixed upper chuck 14 and the arc-shaped cutting edge 16 are the same as the width of the standard tobacco layer 5. The movement speed of each multi-axis robotic arm 8 can be controlled independently.

[0052] A number of steel needles 17 that can be inserted into the tobacco leaves are fixedly arranged on the side of the fixed upper chuck 14 away from the movable lower chuck, and are arranged along the width direction of the fixed upper chuck 14.

[0053] The control system includes an image recognizer 12 that can identify the position of the stem head of the standard tobacco layer 5 on the surface in the tobacco leaf frame 4. The image recognizer 12 is fixedly arranged on the mounting base 14.

[0054] The structural design of the multi-axis robotic arm 8 is a conventional technology in the mechanical field, and the control system of the feeding robot is a conventional technology in the computer field, which will not be elaborated here;

[0055] The image recognizer 12 is also a conventional prior art, which is essentially the comparison of the images captured by the camera with the stored images or machine learning.

[0056] When feeding materials, the tobacco frame 4 is placed at the designated position. The image recognizer 12 recognizes the position of the stem heads of the standard tobacco layer 5 on the surface in the tobacco frame 4. The tobacco layer gripper 9 reaches the appropriate position above the tobacco frame 4 according to the position of the stem heads of the standard tobacco layer 5 on the surface for positioning. Then, the fixed upper gripper 14 descends and presses the standard tobacco layer 5 on the surface tightly. During this period, the stem heads of the standard tobacco layer 5 on the surface will tilt upward to facilitate the insertion of the arc-shaped cutting edge 16. At the same time, the steel needle 17 descends and inserts into the standard tobacco layer 5, thus fixing the standard tobacco layer 5 to be peeled; then the swing arm 15 and the arc-shaped cutting edge 16 are linked, and the lower end of the arc-shaped cutting edge 16 is aligned with the outer 5 - 10 mm of the stem head and pressed downward to form a gap between the standard tobacco layer 5 to be peeled and the lower standard tobacco layer 5; then the arc-shaped cutting edge 16 rotates towards the side of the fixed upper gripper 14, and then the arc-shaped cutting edge 16 penetrates along the gap to peel the standard tobacco layer 5 on the surface; the arc-shaped cutting edge 16 continues to rotate, and the arc-shaped cutting edge 16 and the fixed upper gripper 14 act together to clamp the standard tobacco layer 5; when it is determined that the clamping force is sufficient, the multi-axis robotic arm 8 drives the tobacco layer gripper 9 together with the standard tobacco layer 5 to move upward, thus completing the process of peeling the standard tobacco layer 5.

[0057] Preferably, the leaf-laying feeding belt 11 is a dual-path leaf-laying feeding belt, and there are two feeding robots 7. The two feeding robots 7 are arranged along the length direction of the dual-path leaf-laying feeding belt. Each feeding robot 7 is provided with 4 groups of multi-axis robotic arms 8, and the end of each group of multi-axis robotic arms 8 is provided with a tobacco layer gripper.

[0058] The tobacco layer loosening mechanism includes a rotating roller shaft 10. A baffle 18 is vertically arranged on one side of the roller shaft 10. The standard tobacco layer 5 passes through the space between the roller shaft 10 and the baffle 18 vertically downward in the form of its length direction from top to bottom to achieve loosening.

[0059] The automatic feeding method for threshing and redrying based on the standard framing of selected tobacco leaves includes the following steps:

[0060] Step 1: The selected tobacco leaves are loaded into the tobacco frame 4 layer by layer from bottom to top. The tobacco leaves in each layer are staggered longitudinally. Each layer of tobacco leaves includes one or more pieces of tobacco leaves. The stem heads of each piece of tobacco leaf 3 face outward and are flush. The thickness of each piece of tobacco leaf 3 is the same as the required thickness of the tobacco leaves on the leaf-laying feeding belt 11.

[0061] Step 2: The compaction mechanism is used to compact the tobacco leaves in the tobacco frame 4 so that each piece of tobacco leaf 3 forms a standard tobacco layer 5.

[0062] Step 3: The feeding mechanism is used to peel the standard tobacco layer 5 layer by layer, loosen the standard tobacco layer 5, and spread the loosened tobacco leaves on the leaf-laying feeding belt 11 at the required feeding angle of the tobacco leaves on the leaf-laying feeding belt 11.

[0063] Preferably, a partitioning device 2 is provided below the middle of the stem heads of each layer of tobacco leaves in the tobacco frame 5.

[0064] Each tobacco leaf 3 in the tobacco frame 4 is transferred from the dustpan-shaped standard box 1 at one time, the stems of the tobacco leaves in the standard box 1 are vertically close to the end surface, and the width of the standard box 1 is adapted to the distance between the two columns 6 in the length direction of the tobacco frame 4.

[0065] Step 1 also includes the detection of the nicotine content of each tobacco leaf, and the average nicotine content of each frame is calculated and marked according to the nicotine content of each tobacco leaf. In step 3, the tobacco frame 4 with the appropriate nicotine content of tobacco leaves is selected for feeding according to various formula feeding requirements.

[0066] The feeding mechanism includes a feeding robot 7 and a tobacco layer loosening mechanism for loosening tobacco leaves on a standard tobacco layer 5; the feeding robot includes a control system, a multi-axis mechanical arm 8 and a tobacco layer chuck 9, the tobacco layer chuck 9 includes a mounting seat 13 connected to the execution end of the multi-axis mechanical arm 8, a fixed upper chuck 14 and a movable lower chuck are relatively arranged on the mounting seat 13, the movable lower chuck includes a swing arm 15 rotatably arranged on the mounting seat 13, an arc-shaped blade 16 is rotatably arranged on the end of the swing arm 15, and the arc-shaped blade The opening of 16 faces one side of the fixed upper clamp 14, the arc-shaped blade 16 is consistent with the rotation direction of the swing arm 15, the fixed upper clamp 14 is located in the rotation direction of the arc-shaped blade 16, the swing arm 15 and the arc-shaped blade 16 are driven to rotate by the driving mechanism, the width of the fixed upper clamp 14 and the arc-shaped blade 16 is consistent with the width of the standard tobacco layer 5, and the fixed upper clamp 14 is fixedly provided with a plurality of steel needles 17 that can be inserted into tobacco leaves and are arranged along the width direction of the fixed upper clamp 14 on the side away from the movable lower clamp.

[0067] The present invention has the following beneficial effects:

[0068] 1. Automatic feeding is used instead of manual feeding, which reduces labor and improves work efficiency.

[0069] 2. Automatic feeding can accurately control the feeding uniformity, tobacco leaf angle and feeding speed of each workstation (that is, the weight, shape and direction of tobacco leaf stem heads of each standard tobacco layer are consistent), and can accurately control the feeding ratio and online material flow of each raw tobacco grade.

[0070] 3. Complete the chemical composition (nicotine) test of the shaped tobacco leaves before framing. When feeding, you can match the discharge according to the average value of the chemical composition test of each frame, and make balanced adjustments to effectively improve the ability to control the uniformity of chemical composition.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. An automatic feeding device for threshing and redrying based on the standard frame loading of selected post-harvest tobacco leaves, characterized in that: The invention comprises a tobacco frame (4), wherein multiple layers of selected tobacco leaves are layered from bottom to top, the multiple layers of tobacco leaves are staggered in sequence in the longitudinal direction, each layer of tobacco leaves comprises one or more pieces of tobacco leaves, the stems of each piece of tobacco leaves (3) are all facing outwards and are flush, the thickness of each piece of tobacco leaves (3) is the same as the thickness of tobacco leaves required on the leaf laying and feeding belt (11), the automatic feeding device further comprises a compacting mechanism for compacting the tobacco leaves in the tobacco frame (4) so that each piece of tobacco leaves forms a standard tobacco layer (5), the automatic feeding device further comprises a feeding mechanism for peeling off the standard tobacco layer (5) in a single layer, loosening the standard tobacco layer (5), and flattening the loosened tobacco leaves onto the leaf laying and feeding belt (11) at the tobacco leaf feeding angle required on the leaf laying and feeding belt (11); A separation device (2) is provided under each layer of tobacco stem heads in the tobacco frame (4); The feeding mechanism comprises a feeding robot (7) and a tobacco layer loosening mechanism for loosening tobacco leaves of a standard tobacco layer (5); the feeding robot (7) comprises a control system, a multi-axis mechanical arm (8) and a tobacco layer chuck (9); the tobacco layer chuck (9) comprises a mounting seat (13) connected to the execution end of the multi-axis mechanical arm (8); a fixed upper chuck (14) and a movable lower chuck are relatively arranged on the mounting seat (13); the movable lower chuck comprises a swing arm (15) rotatably arranged on the mounting seat (13); an arc-shaped blade (16) is rotatably arranged on the end of the swing arm (15); the arc The opening of the arc-shaped blade (16) faces one side of the fixed upper clamp (14); the rotation direction of the arc-shaped blade (16) is consistent with that of the swing arm (15); the fixed upper clamp (14) is located in the rotation direction of the arc-shaped blade (16); the swing arm (15) and the arc-shaped blade (16) are driven to rotate by a driving mechanism; the width of the fixed upper clamp (14) and the arc-shaped blade (16) is consistent with the width of the standard tobacco layer (5); and a plurality of steel needles (17) that can be inserted into tobacco leaves and are arranged along the width direction of the fixed upper clamp (14) are fixedly provided on the side of the fixed upper clamp (14) away from the movable lower clamp.

2. The automatic feeding device for threshing and redrying based on the standard frame loading of selected tobacco leaves according to claim 1, wherein: Each piece of tobacco leaf (3) in the tobacco frame (4) is transferred from the dustpan-shaped standard box (1) at one time, the stems of the tobacco leaves in the standard box (1) are vertically close to the end surface thereof, and the width of the standard box (1) is adapted to the distance between the two uprights (6) in the length direction of the tobacco frame (4).

3. The automatic feeding device for threshing and redrying based on the standard framing of selected tobacco leaves according to claim 1, characterized in that: The automatic feeding device also includes a device for detecting the nicotine content of each tobacco leaf, and the tobacco frame (4) is marked with an average value of the nicotine content of the tobacco leaves in the frame obtained based on the nicotine content of each tobacco leaf.

4. An automatic feeding method for threshing and redrying based on the standard frame loading of selected post-harvest tobacco leaves, characterized in that: The steps include: Step 1: Loading the selected tobacco leaves in layers from bottom to top into the tobacco frame (4), with each layer of tobacco leaves being staggered in sequence in the longitudinal direction, each layer of tobacco leaves comprising one or more pieces of tobacco leaves, with the stems of each piece of tobacco leaves (3) facing outwards and being flush, and the thickness of each piece of tobacco leaves (3) being the same as the thickness of tobacco leaves required on the leaf laying and feeding belt (11); Step 2: using a compacting mechanism to compact the tobacco leaves in the tobacco frame (4) so that each piece of tobacco leaf (3) forms a standard tobacco layer (5); Step 3: using a feeding mechanism to peel off the standard tobacco layer (5) in a single layer, loosen the tobacco leaves of the standard tobacco layer (5), and lay the loose tobacco leaves flat on the leaf laying feeding belt (11) at the required tobacco leaf laying angle on the leaf laying feeding belt (11); The feeding mechanism comprises a feeding robot (7) and a tobacco layer loosening mechanism for loosening tobacco leaves of a standard tobacco layer (5); the feeding robot comprises a control system, a multi-axis mechanical arm (8) and a tobacco layer chuck (9); the tobacco layer chuck (9) comprises a mounting seat (13) connected to the execution end of the multi-axis mechanical arm (8); a fixed upper chuck (14) and a movable lower chuck are relatively arranged on the mounting seat (13); the movable lower chuck comprises a swing arm (15) rotatably arranged on the mounting seat (13); an arc-shaped blade (16) is rotatably arranged on the end of the swing arm (15); the arc-shaped blade (16) is rotatably arranged on the end of the swing arm (15); The opening of the opening (16) faces one side of the fixed upper clamp (14); the arc-shaped blade (16) and the swing arm (15) rotate in the same direction; the fixed upper clamp (14) is located in the rotation direction of the arc-shaped blade (16); the swing arm (15) and the arc-shaped blade (16) are driven to rotate by a driving mechanism; the width of the fixed upper clamp (14) and the arc-shaped blade (16) is consistent with the width of the standard tobacco layer (5); and a plurality of steel needles (17) that can be inserted into tobacco leaves and are arranged along the width direction of the fixed upper clamp (14) are fixedly provided on the side of the fixed upper clamp (14) away from the movable lower clamp.

5. The automatic feeding method for threshing and redrying based on the standard frame loading of selected post-cured tobacco leaves according to claim 4, wherein: A separation device (2) is provided under each layer of tobacco stem heads in the tobacco frame (5).

6. The automatic feeding method for threshing and redrying based on the standard frame loading of selected post-cured tobacco leaves according to claim 4, characterized in that: Each piece of tobacco leaf (3) in the tobacco frame (4) is transferred from the dustpan-shaped standard box (1) at one time, the stems of the tobacco leaves in the standard box (1) are vertically close to the end surface thereof, and the width of the standard box (1) is adapted to the distance between the two uprights (6) in the length direction of the tobacco frame (4).

7. The automatic feeding method for threshing and redrying based on the standard framing of selected post-harvest tobacco leaves according to claim 4, wherein: Step 1 also includes testing the nicotine content of each piece of tobacco leaf, calculating the average nicotine content of each frame of tobacco leaves according to the nicotine content of each piece of tobacco leaf and marking it, and in step 3, selecting tobacco frames (4) with appropriate nicotine content of tobacco leaves for feeding according to various formula feeding requirements.

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