A device for detecting the density of baled tobacco in a packing box

Abstract

The utility model discloses a kind of cut tobacco case density detection devices, it is related to cut tobacco production equipment technical field, including embryo compression assembly, for compressing cut tobacco as tobacco embryo, rotatable connection has bulk material plate at the port of embryo compression assembly, bulk material plate is used to guide cut tobacco to fall into the inner cavity of embryo compression assembly;Distance sensor, be located on the inner cavity side wall of embryo compression assembly, ranging sensor is used to detect the stacking height of each area cut tobacco in the inner cavity of embryo compression assembly;Visual detector, for scanning the upper end surface of tobacco embryo, and detect the height of each area upper end surface;Control system, with bulk material plate, distance sensor, visual detector signal connection, control system is used to regulate the setting angle of bulk material plate and calculate the change value of each area height of tobacco embryo, the above-mentioned cut tobacco case density detection device, solve the existing cut tobacco density detection technology need to destroy tobacco embryo structure, cannot be adjusted or detected cost high when producing tobacco embryo to tobacco embryo density on line, detection mode is harmful to human body technical problem.

Description

Technical Field

[0001] This utility model relates to the technical field of tobacco production equipment, and in particular to a device for detecting the density of sheet tobacco packing. Background Technology

[0002] In the tobacco leaf re-drying production process, packing density deviation is one of the quality indicators of the finished tobacco sheets. After re-drying, the tobacco sheets need to be packaged in cardboard boxes for easy transportation and storage. The packing and compaction of the tobacco sheets are completed by a pre-compression baling machine. First, the tobacco sheets are loaded into an iron box (approximately 6 meters high), then the pressure head at the front end of a hydraulic cylinder is used to compact the tobacco leaves, followed by packaging and bundling. Excessive packing density deviation will directly affect the fermentation effect of the tobacco leaves, and in severe cases, may even cause oil pressing or mold growth. However, in actual production, due to the lack of effective online detection methods and control mechanisms, it is currently not possible to effectively adjust and control the packing density deviation in a timely manner.

[0003] Currently, the methods used in China for detecting the density of tobacco blanks inside the box are the nine-point sampling tube method and the X-ray detection method. The nine-point sampling tube method requires destructive sampling of the packaged tobacco blanks through a special density sampling detection method, and it cannot test every package, resulting in a serious lag in adjusting the uniformity of tobacco blank density. The X-ray detection method is costly and has strong radiation, which can cause certain damage to the operator's health.

[0004] In summary, developing a tobacco packing density detection device that can detect the density of different regions of tobacco blanks, adjust the distribution of tobacco flakes in a timely manner during the production process, solve the problem of poor accuracy in manually adjusting the distribution of tobacco flakes, ensure uniform density of processed tobacco blanks, and reduce labor costs is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a tobacco sheet packing density detection device, which solves the technical problems of existing density detection methods that damage the tobacco sheet structure, are slow or costly to adjust the uniformity of tobacco sheet density, have poor accuracy in manually adjusting tobacco sheet distribution, and cause damage to the health of operators due to the detection equipment.

[0006] To achieve the above objectives, this utility model provides a device for detecting the packing density of sheet cigarettes, comprising:

[0007] The pressing assembly is used to compress tobacco flakes into tobacco blanks. A material distribution plate is rotatably connected to the port of the pressing assembly. The material distribution plate is used to guide the tobacco flakes into the inner cavity of the pressing assembly.

[0008] A distance sensor is installed on the inner wall of the pressing assembly. The distance sensor is used to detect the stacking height of tobacco sheets in each area of ​​the inner cavity of the pressing assembly.

[0009] A visual detector is used to scan the upper surface of the tobacco blank and detect the height of each region on the upper surface;

[0010] The control system is connected to the material distribution plate, distance sensor, and vision detector. The control system is used to adjust the setting angle of the material distribution plate and calculate the change value of the height of each area of ​​the tobacco blank.

[0011] Preferably, it also includes a feeding belt for conveying tobacco flakes. Specifically, there are two feeding belts, both located above the port of the pressing assembly. The feeding belts are perpendicular to each other and spaced apart along the height direction of the pressing assembly.

[0012] Preferably, the pressing assembly includes a housing and a pressing head slidably disposed in the housing. The pressing head moves in the direction of the height of the housing. A material distribution plate is disposed on the inner wall of the pressing head near the feeding belt. A distance sensor is fixed to the inner wall of the housing by a mounting plate.

[0013] Preferably, the bulk material plate has rotating shafts extending from both ends along the width direction of the pressure head. The rotating shafts pass through the side wall of the pressure head and are connected to a drive cylinder on the outer side wall of the pressure head. The drive cylinder is connected to the control system signal.

[0014] Preferably, there are nine distance sensors, each with the same angle and tilted towards the side closer to the tobacco.

[0015] Preferably, a transport plate is provided on the side of the casing away from the feeding belt. The transport plate is used to transport the material box, and the material box is used to package the tobacco blanks.

[0016] Preferably, a detection bracket is provided at the end of the transport plate away from the pressing assembly. The detection bracket places the vision detector above the material box, and the detection direction of the vision detector corresponds to the inner cavity of the material box.

[0017] Preferably, the control system has a built-in deep learning module, which is used to establish a simulation model based on the detected changes in tobacco embryo height and tobacco embryo density each time.

[0018] Preferably, the distance sensor is positioned inside the casing at a height higher than the stacking height of the tobacco sheets.

[0019] Compared to the aforementioned background technology, the tobacco packing density detection device provided by this utility model includes: a pressing assembly with a port on top, through which tobacco leaves enter the inner cavity of the pressing assembly. The pressing assembly compresses the tobacco leaves into tobacco blanks. A material distribution plate is rotatably mounted on the inner wall of the port of the pressing assembly, guiding the tobacco leaves into the inner cavity of the pressing assembly. A distance sensor is mounted on the inner wall of the pressing assembly to detect the height of the tobacco leaf stack. A vision detector is mounted on the outer side of the pressing assembly, scanning the upper surface of the compressed tobacco blanks and detecting the height of each area on the upper surface of the tobacco blanks. The vision detector and the distance sensor feed back the detection information to the control system. The control system is signal-connected to the material distribution plate. A certain amount of tobacco leaves is placed into the inner cavity of the pressing assembly from the port, and the distance sensor detects the height of each area in the inner cavity of the pressing assembly in real time. The system detects the height of the tobacco flakes in each region and transmits the detection signal to the control system. The control system identifies the height of the tobacco flakes in each region of the pressing assembly. If the height of the tobacco flakes in each region differs significantly, the system controls the material distribution plate to rotate so that the output end of the material distribution plate corresponds to the region with the lower tobacco flake stacking height, thus compensating for the stacking height of the tobacco flakes in that region. Throughout the feeding process, the material distribution plate adjusts the stacking height of the tobacco flakes in each region of the pressing assembly in real time to ensure that the density of each part of the compressed tobacco flake is uniform. After the tobacco flakes are compressed into tobacco flakes, the pressing assembly removes the pressure on the tobacco flakes, causing the tobacco flakes to expand to a certain extent. The tobacco flakes are then transported to a vision detector, which scans the upper surface of the tobacco flakes and transmits the height information of each region on the upper surface of the tobacco flakes to the control system. Based on the principle that the greater the density of the tobacco flakes after compression, the greater the expansion coefficient, the control system calculates the density of each region of the tobacco flake. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a first structural diagram of the tobacco packing density detection device provided in an embodiment of the present invention;

[0022] Figure 2 This is a second structural diagram of the tobacco packing density detection device provided in an embodiment of the present invention;

[0023] Figure 3 This is an assembly diagram of the mounting plate and distance sensor provided in an embodiment of the present utility model.

[0024] Among them, 1-box; 2-pressure head; 3-distance sensor; 4-vision detector; 5-feeding belt; 6-transport plate; 7-material box; 8-mounting plate; 9-drive cylinder; 10-detection bracket; 11-bulk material plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] This application provides a tobacco sheet packing density detection device, including a pressing assembly. The inner cavity of the pressing assembly can accommodate a certain amount of tobacco sheets and compress them into tobacco sheets. A rotatable material distribution plate 11 is provided at the port of the pressing assembly to adjust the falling position of the tobacco sheets. A distance sensor 3 is provided on the inner wall of the pressing assembly. The distance sensor 3 emits a signal towards the side closer to the tobacco sheets to detect the stacking height of the tobacco sheets in each area of ​​the inner cavity of the pressing assembly, and sends the stacking height to the control system. The control system is signal-connected to the material distribution plate 11, causing the material distribution plate 11 to swing towards the side with a lower stacking height of the tobacco sheets. The output end of the material distribution plate 11 corresponds to the side with a lower stacking height of the tobacco sheets, and replenishes the amount of tobacco sheets in that area. The pressure is increased to ensure that the stacking height of the tobacco leaves in the inner cavity of the pressing assembly remains consistent, resulting in a more uniform density of the tobacco blanks formed by the pressing assembly. After the pressing assembly completes the processing of the tobacco blanks, the tobacco blanks are transported out of the pressing assembly. After the tobacco blanks lose the pressure of the pressing assembly, they expand to a certain extent. Since the greater the density of the tobacco leaves after compression, the greater the expansion coefficient, the density of each region of the tobacco blank is positively correlated with the degree of protrusion of each region on the upper end face of the tobacco blank. The tobacco blanks are placed below the vision detector 4, which scans the upper end face of the tobacco blanks and detects the horizontal height of each region on each end face of the tobacco blanks. The height information is fed back to the control system, which calculates the density of the tobacco blanks in the corresponding region based on the change in height of the tobacco blanks in each region.

[0028] The tobacco packing density detection device provided in this application detects the stacking of tobacco sheets through a distance sensor 3, controls the falling position of the tobacco sheets to make the tobacco sheets in the inner cavity of the pre-compression assembly stacked flat, and the density of the compressed tobacco sheets uniform. By utilizing the characteristic that the expansion coefficient of the tobacco sheets is positively correlated with the density, the density of different regions of the tobacco sheets is calculated.

[0029] Please refer to the instruction manual appendix. Figure 1The pressing assembly includes a housing 1 for holding tobacco flakes and a pressing head 2 slidably disposed within the housing 1. The sliding direction of the pressing head 2 is the height direction of the housing 1. Above the pressing assembly are two feeding belts 5, each perpendicular to the others, spaced apart along the height direction of the housing 1. The lower feeding belt 5 aligns its end along the conveying direction with the port of the housing 1, and its end away from the conveying direction aligns with the end of the upper feeding belt 5. As the tobacco flakes fall from the upper feeding belt 5 onto the lower feeding belt 5, the flakes... The smoke disperses in the air to prevent some of the tobacco flakes from tangling together and falling into the inner cavity of the casing 1, which would result in uneven height of the stacked tobacco flakes. Preferably, the pressure head 2 and the casing 1 are interlocking cylindrical shells, and the port of the pressure head 2 facing away from the feeding belt 5 is detachably provided with a bottom plate. During the filling of tobacco flakes, the bottom plate of the pressure head 2 is removed, and the tobacco flakes can pass through the inner cavity of the pressure head 2 and accumulate inside the casing 1. When the tobacco flakes accumulated in the casing 1 reach the target height, the pressure head 2 is pulled out of the casing 1, and the bottom plate is installed at the end of the pressure head 2. The bottom plate of the pressure head 2 squeezes the tobacco flakes and compresses them into tobacco blanks.

[0030] Preferably, a material distribution plate 11 is provided on the inner wall of the pressure head 2 near the feeding belt 5. Two rotating shafts extend from both ends of the material distribution plate 11 along its length, and each rotating shaft passes through the side walls of the housing 1. The rotating shafts of the material distribution plate 11 are perpendicular to the conveying direction of the feeding belt 5 located below. When the tobacco flakes fall from the end of the feeding belt 5, they first fall onto the inclined material distribution plate 11, and then slide down the side wall of the material distribution plate 11 into the inner cavity of the housing 1. The throwing distance of the tobacco flakes can be adjusted by changing the inclination of the material distribution plate 11. Specifically, the clamp between the side wall of the pressure head 2 parallel to the rotation axis of the material distribution plate 11 and the material distribution plate 11 is... The angle is denoted as the swing angle. When the swing angle is small, the material plate 11 conveys the tobacco flakes a shorter distance in the horizontal direction, meaning the tobacco flakes fall into the inner cavity of the housing 1 on the side close to the feeding belt 5. When the swing angle is large, the material plate 11 conveys the tobacco flakes a longer distance in the horizontal direction, and the tobacco flakes will be scattered into the inner cavity of the housing 1 on the side away from the feeding belt 5. When the control system detects that the tobacco flakes in a certain area are piled up too low through the distance sensor 3, it adjusts the material plate 11 to make as much tobacco flakes as possible be scattered into that area, thus compensating for the pile height of the tobacco flakes in that area and ensuring that the end face of the tobacco flakes piled up is relatively flat when the pressure head 2 compresses the tobacco flakes.

[0031] It should be noted that each rotating shaft extends along the side wall of the housing 1 and is connected to the drive cylinder 9 on the outer side wall of the housing 1. The drive cylinder 9 is connected to the control system and receives the control information issued by the control system to drive the rotating shaft and rotate the material plate 11 to the target angle.

[0032] Preferably, the distance sensors 3 can be laser rangefinders, specifically nine in number. The distance sensors 3 are fixed to the inner wall of the housing 1 via mounting plates 8. All distance sensors 3 are located on the same horizontal plane. In one embodiment of this application, four and five distance sensors 3 are respectively provided on two opposite side walls of the housing 1. Each distance sensor 3 on the side walls emits a signal towards the opposite side, and the direction of signal emission is tilted away from the port of the housing 1, ensuring that the signal emitted by the distance sensor 3 can act on the stacked tobacco leaves. Furthermore, the distance sensors 3 located on the two opposite side walls are staggered, and each distance sensor 3 independently detects a region within the inner cavity of the housing 1, enabling the control system to more accurately detect the stacking of tobacco leaves in each region of the inner cavity of the housing 1. In addition, the position of each distance sensor 3 is flexibly adjustable, and the operator can adjust it according to actual needs.

[0033] Please refer to the instruction manual appendix. Figure 2 A transport plate 6 is provided at the end of the sleeve box 1 away from the feeding belt 5. The transport plate 6 is provided with a material box 7 for packaging tobacco blanks. Preferably, the material box 7 can be fitted into the outside of the sleeve box. The inner wall of the material box 7 is in contact with the outer wall of the sleeve box 1. The tobacco flakes are guided by the sleeve box 1 and fall into the material box 7. The pressing head 2 presses the stacked tobacco flakes into the material box 7, so that the tobacco blanks are formed in the material box 7. A detection bracket 10 is provided at the end of the transport plate 6 away from the sleeve box 1. The height of the detection bracket 10 is greater than the height of the material box 7. A vision detector 4 is installed on the detection bracket 10 so that the scanning end of the vision detector 4 corresponds to the inner cavity of the material box 7, ensuring that the vision detector 4 can scan the end face of the tobacco blanks in the material box 7.

[0034] When pressure is applied by the pressure head 2, the height of the tobacco blanks is the same throughout. After the pressure is removed, the tobacco blanks expand to a certain extent, with more tobacco sheets compressed in areas of higher density and a greater degree of bulging after expansion. The sliding distance of the pressure head 2 within the box is the same, meaning that the height of the tobacco blanks compressed by the pressure head 2 is the same for each batch. The control system stores the height of the tobacco blanks at this time and compares it with the height of each area of ​​the tobacco blanks after the pressure is removed. If the height change value of a certain area is large, it indicates that the density of the tobacco blanks in that area is high, and vice versa. Preferably, the control system has a built-in deep learning module. The deep learning module collects the height change value of the tobacco blanks detected each time and the density of the corresponding area of ​​the tobacco blank. Through data simulation, it fits the functional relationship between the height change value and the density of the tobacco blanks. Through multiple detections, the fitting result is gradually made more accurate, so that when the control system detects the height change value of a certain area of ​​the tobacco blank, it can quickly calculate the tobacco blank density corresponding to the change value, thereby improving the detection accuracy and detection rate of the tobacco sheet packing density detection device.

[0035] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0036] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A device for detecting the density of baled tobacco in a bale, characterized in that, include: A pressing assembly is used to compress tobacco flakes into tobacco blanks. A material distribution plate (11) is rotatably connected to the port of the pressing assembly. The material distribution plate (11) is used to guide the tobacco flakes into the inner cavity of the pressing assembly. A distance sensor (3) is disposed on the inner cavity sidewall of the pressing assembly. The distance sensor (3) is used to detect the stacking height of the tobacco sheets in each region of the inner cavity of the pressing assembly. A visual detector (4) is used to scan the upper surface of the tobacco blank and detect the height of each region of the upper surface; The control system is connected to the loose material plate (11), the distance sensor (3), and the vision detector (4). The control system is used to adjust the angle of the loose material plate (11) and calculate the change value of the height of each area of ​​the tobacco blank.

2. The cut tobacco case packing density detection apparatus of claim 1, wherein, It also includes a feeding belt (5), which is used to transport the tobacco flakes. Specifically, there are two feeding belts (5), both of which are located above the port of the pressing assembly. Each feeding belt (5) is perpendicular to the others and is spaced apart along the height direction of the pressing assembly.

3. The cut tobacco bin density detection apparatus of claim 2, wherein, The pressing assembly includes a housing (1) and a pressing head (2) that can be slidably disposed in the housing (1). The pressing head (2) moves in the direction of the height of the housing (1). The material distribution plate (11) is disposed on the inner wall of the pressing head (2) near the feeding belt (5). The distance sensor (3) is fixed to the inner wall of the housing (1) by a mounting plate (8).

4. The cut tobacco bin density detection apparatus of claim 3, wherein, The material distribution plate (11) has rotating shafts extending from both ends along the width direction of the pressure head (2). The rotating shafts pass through the side wall of the pressure head (2) and are connected to the drive cylinder (9) on the outer side wall of the pressure head (2). The drive cylinder (9) is connected to the control system signal.

5. The cut tobacco bin density detection apparatus of claim 4, wherein, There are nine distance sensors (3), and each distance sensor (3) is set at the same angle and tilted towards the side closer to the tobacco.

6. The cut tobacco bin density detection apparatus of claim 3, wherein, The casing (1) has a transport plate (6) on the side opposite to the feeding belt (5), the transport plate (6) is used to transport the material box (7), and the material box (7) is used to package the tobacco blank.

7. The cut tobacco bin density detection apparatus of claim 6, wherein, The transport plate (6) is provided with a detection bracket (10) at one end away from the pressing assembly. The detection bracket (10) places the vision detector (4) above the material box (7). The detection direction of the vision detector (4) corresponds to the inner cavity of the material box (7).

8. The cut tobacco bin density detection apparatus of claim 3, wherein, The distance sensor (3) is positioned inside the casing (1) above the stack height of the tobacco sheets.

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