A method for controlling the packing of cut tobacco

Abstract

The present invention discloses a method for controlling the packing of cut tobacco, which comprises the following specific steps: dividing the internal space height of the tobacco box into L layers, with each layer arranged by 1-9 step blocks in a nine-square grid structure. After the first layer of cut tobacco is loaded and the loading of the second layer begins; the loading order of the second layer is opposite to that of the first layer, and the running order of the material guiding plate and the cloth conveying vehicle is also opposite to that of the first layer. When loading each step block, the specific positions of the material guiding flap and the cloth conveying vehicle are the same as those of the first layer; when the packing weight reaches the set weight G, the belt scale stops running; after all equipment returns to the initial position, the flat pressing plate moves from the position of the top proximity switch to the position of the bottom proximity switch; after the pressing plate levels and adjusts the cut tobacco plane in the tobacco box, it returns to the position of the upper proximity switch; the full tobacco box is conveyed by the conveyor to the downstream process, and at the same time, a new empty tobacco box will be conveyed to the packing station.

Description

Technical Field

[0001] The present invention belongs to the technical field related to tobacco production, and particularly relates to a method for controlling tobacco leaf packing during the process of packing tobacco leaf materials into boxes. Background Art

[0002] During the production and processing of tobacco leaves, multiple production links are required. The material transfer between different production links mainly adopts two methods: conveyor belt transportation and tobacco box transfer. In addition, in order to meet the requirements of high storage efficiency and stable process parameters such as the temperature and humidity of tobacco leaves, the storage mode with tobacco leaf boxes as the handling unit has become an important link in the tobacco leaf production process.

[0003] The semi-finished tobacco leaves after baking and the finished tobacco leaves after blending and flavoring need to be packed into boxes according to the required weight at the packing station and sent to the high-rise warehouse for storage. The quality of packing will affect the storage quality of tobacco leaves and their subsequent usage conditions.

[0004] The traditional method of packing tobacco leaves is to directly pack the processed tobacco leaves into the tobacco box through a fixed conveyor after solidifying the packing weight with an electronic belt scale. Since the bottom area inside the tobacco box is much larger than the cross-sectional area of the tobacco leaf flow, the tobacco leaves packed in this way generally form a pyramid shape inside the tobacco box, and the height of the tobacco leaves around the inside of the tobacco box is significantly lower than the height in the middle. The pyramid-shaped tobacco leaf structure not only limits the space utilization rate of the tobacco box but also has the following obvious disadvantages: the pyramid structure causes the height and quality of the tobacco leaves in the middle part to be significantly higher than those around, and the pressure of the tobacco leaves in the middle part on the bottom of the tobacco box will also increase, resulting in the adhesion of the tobacco leaves in the middle part to the bottom of the tobacco box. The tobacco leaves adhered to the bottom of the tobacco box will not only increase the loss of tobacco leaves but also increase the pressure on the cleaning equipment during the cleaning of the tobacco box, resulting in incomplete cleaning or blockage of the ashtray cleaning device. On the other hand, the pyramid-shaped tobacco leaf structure increases the contact area between the tobacco leaves and the air, and the process parameters such as the moisture and temperature of the tobacco leaves will be more sensitive to environmental changes. When the environmental temperature changes significantly, the moisture and temperature of the tobacco leaves will change significantly. Summary of the Invention

[0005] To solve the above technical problems existing in the prior art, the present invention provides a method for controlling tobacco leaf packing. The present invention involves the coordinated control of a total of four parts of equipment, namely a belt scale, a cloth traveling crane, a distribution traveling crane, and a packing station. Among them, the running directions of the cloth traveling crane and the distribution traveling crane are perpendicular to each other. The present invention can evenly fill the tobacco box with tobacco leaves according to the set weight by controlling the coordinated movement of the conveyor and the guide flap. The filled tobacco leaves have a high flatness, avoiding the formation of a pyramid-shaped convex structure of the material accumulation; at the same time, the present invention can realize the function of finely adjusting the filling flatness by modifying the number of layers of material filling.

[0006] The technical solution of the present invention is as follows:

[0007] A method for controlling the packing of cut tobacco, characterized by comprising the following specific steps:

[0008] S1: Divide the height of the internal space of the tobacco box into L layers, and each layer is arranged by 1-9 step blocks according to the nine-square grid structure. The weight g of each step block is calculated by the formula (1):

[0009] Step block weight g = set packing weight G / (L * 9) (1)

[0010] S2: All devices automatically return to the initial positions: the cloth traveling crane is located at the position corresponding to the first proximity switch; the distribution traveling crane is located at the initial position corresponding to the second proximity switch; the material guiding flap is located at the position corresponding to the first proximity switch; the flat pressing plate is located at the initial position corresponding to the top proximity switch;

[0011] S3: After the packing starts, when the photoelectric tube at the bottom of the packing station detects that the tobacco box is in place, the belts of the belt scale, the cloth traveling crane and the distribution traveling crane start to run. At the same time, the distribution traveling crane moves from the initial position to the working position corresponding to the first proximity switch, and the cut tobacco starts to be packed according to the set parameters. The specific steps are as follows:

[0012] S31. After the cut tobacco is weighed by the belt scale, it is conveyed through the cloth traveling crane located at the position corresponding to the first proximity switch and the distribution traveling crane located at the first proximity switch position to reach the packing station, and is guided by the material guiding flap located at the first proximity switch and falls into the first step block of the first layer of the nine-square grid at the bottom of the tobacco box;

[0013] S32. When the weight of the cut tobacco in the first step block reaches g, the cloth traveling crane moves to its second proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the material guiding flap remains at its first proximity switch position; the cut tobacco starts to fill the second step block of the first layer of the nine-square grid;

[0014] S33. When the weight of the cut tobacco in the second step block reaches g, the cloth traveling crane moves to its third proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the material guiding flap remains at the position corresponding to its first proximity switch; the cut tobacco starts to fill the third step block of the first layer of the nine-square grid;

[0015] S34. When the weight of the cut tobacco in the third step block reaches g, the cloth traveling crane remains at its corresponding third proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the material guiding flap moves to its corresponding second proximity switch position; the cut tobacco starts to fill the fourth step block of the first layer of the nine-square grid;

[0016] S35. After the tobacco weight in the 4th step block reaches g, the cloth traveling crane moves to its corresponding second proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the guiding flap remains at its second proximity switch position; the tobacco begins to fill the 5th step block of the first-layer nine-square grid.

[0017] S36. After the tobacco weight in the 5th step block reaches g, the cloth traveling crane moves to its corresponding first proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the guiding flap remains at its second proximity switch position; the tobacco begins to fill the 6th step block of the first-layer nine-square grid.

[0018] S37. After the tobacco weight in the 6th step block reaches g, the cloth traveling crane remains at its corresponding first proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the guiding flap moves to its third proximity switch position; the tobacco begins to fill the 7th step block of the first-layer nine-square grid.

[0019] S38. After the tobacco weight in the 7th step block reaches g, the cloth traveling crane moves to its corresponding second proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the guiding flap remains at its third proximity switch position, and the tobacco begins to fill the 8th step block of the first-layer nine-square grid.

[0020] S39. After the tobacco weight in the 8th step block reaches g, the cloth traveling crane moves to its corresponding third proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the guiding flap remains at its third proximity switch position, and the tobacco begins to fill the 9th step block of the first-layer nine-square grid.

[0021] S4: After the tobacco weight in the 9th step block reaches g, the first-layer tobacco loading is completed and the second-layer loading begins; the loading order of the second layer is opposite to that of the first layer, and the tobacco is filled from the 9th step block to the 1st step block; the operating order of the guiding plate and the cloth traveling crane is also opposite to that of the first layer, and the specific positions of the guiding flap and the cloth traveling crane when loading each step block are the same as those of the first layer.

[0022] S5: According to the same control method as in Step S3 and Step S4, that is, the operating order and positions of the equipment for odd layers are the same as those of the first layer in Step S3, and the operating order and positions of the equipment for even layers are the same as those of the second layer in Step S4.

[0023] S6: When the packing weight reaches the set weight G, the belt scale stops running; after all equipment returns to the initial position, the flat pressing plate moves from the top proximity switch position to the bottom proximity switch position; after the pressing plate levels and adjusts the cut tobacco plane in the cigarette case, it returns to the upper proximity switch position; the full cigarette case is conveyed by the conveyor to the downstream process, and at the same time, a new empty cigarette case will be conveyed to the packing station, and the new cigarette case is packed according to the above steps S1-S5.

[0024] The cloth traveling crane is controlled by the packing step distance weight and three proximity switches, and is responsible for conveying the cut tobacco at the discharge port of the belt scale to the distribution traveling crane according to a fixed operation mode; the distribution traveling crane is controlled by two proximity switches to operate, and is divided into two working positions: the initial position and the packing position.

[0025] The packing station mainly includes two moving parts: a guiding flap and a flat pressing plate. Among them, the guiding flap is controlled by three proximity switches to act, realizing the cyclic movement of three working positions: front, middle, and rear. The flat pressing plate is controlled by two proximity switches to move up and down, including two working positions: the initial position and the compaction position. The flat pressing plate consists of a pressing plate slightly smaller than the cigarette case plane and a lifting rod. At the initial position, the height of the pressing plate is higher than the highest point of the cigarette case, and the compaction position can be adjusted according to the packing height of the cut tobacco.

[0026] Compared with the prior art, the beneficial effects of the present invention are reflected in:

[0027] 1. The present invention can evenly fill the cigarette case with cut tobacco according to the set weight by controlling the coordinated movement of the conveyor and the guiding flap; the cut tobacco after filling has a high flatness, avoiding the formation of a pyramid-shaped convex structure of the material accumulation; at the same time, the present invention can realize the function of fine-tuning the filling flatness by modifying the number of layers of material filling.

[0028] 2. The present invention can evenly fill the cut tobacco into the cigarette case according to the set weight, and the distribution of the cut tobacco in the cigarette case tends to be a flat structure; at the same time, by adjusting the positions of the guiding flap and the positioning proximity switches of the cloth traveling crane, the uniform filling of different-sized cigarette cases can be realized, reducing the limitation requirements of the packing station on the cigarette case size.

[0029] 3. Since the cut tobacco is evenly distributed in the cigarette case, the control method of the present invention reduces the adhesion degree between the bottom of the cigarette case and the cut tobacco, reduces material waste, and reduces the working pressure of cigarette case cleaning.

[0030] 4. The cut tobacco in the cigarette case of the present invention is evenly laid, reducing the contact area between the cut tobacco surface and the air, and improving the stability of the cut tobacco process parameters. Description of the Drawings

[0031] Figure 1 It is the packing control structure diagram of the present invention.

[0032] Figure 2It is a schematic diagram of the step block of the single-layer nine-square grid structure of the present invention.

[0033] Figure 3 It is a comparison table of the step blocks of the odd and even layers of the present invention and the equipment positions.

[0034] In the figure, SQ1.1, SQ1.2, and SQ1.3 are proximity switches for controlling the position of the fabric traveling crane, SQ2.1 and SQ2.2 are proximity switches for controlling the position of the distribution traveling crane, M1.1 is the traveling motor of the fabric traveling crane, M1.2 is the belt motor of the fabric traveling crane, M2.1 is the traveling motor of the distribution traveling crane, M2.2 is the belt motor of the distribution traveling crane, SQ1A, SQ1B, and SQ1C are proximity switches for the position of the material guiding flap, SQ2A and SQ2B are proximity switches for the position of the flat pressing plate, and SQ3A is a photoelectric tube for detecting the arrival of the cigarette case. Specific Embodiments

[0035] The following will describe in detail the specific embodiments of the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining and illustrating the embodiments of the present invention, and are not used to limit the embodiments of the present invention.

[0036] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0038] Reference Figure 1 、 Figure 2 and Figure 3 , the present invention divides the internal space height of the cigarette case into L layers, and each layer is arranged with 1-9 step blocks in a nine-square grid structure. The weight g of each step block is calculated by the formula (1):

[0039] Step block weight g = set packing weight G / (L * 9) (1)

[0040] Before starting packing, set the packing layer number L and the packing weight G. At the same time, the fabric traveling crane moves to SQ1.1, the distribution traveling crane moves to SQ2.2, the material guiding flap moves to SQ1A, and the flat pressing plate moves to SQ2B. After the packing program is started, the cigarette case is transported to SQ3A, the distribution traveling crane moves to the packing position SQ2.1, and then the conveyor belts of each conveyor start to run, and the cut tobacco starts to be packed according to the set parameters. The specific steps are as follows:

[0041] The cut tobacco weighed by the belt scale is transported to the packing station through the fabric traveling crane at the SQ1.1 position and the distribution traveling crane at the SQ2.1 position, and is guided by the material guiding flap at the SQ1A position and falls into the first step block of the first layer of the nine-square grid at the bottom of the cigarette case.

[0042] (2) After the weight of the cut tobacco in the first step block reaches g, the cloth traveling crane moves to the SQ1.2 position, the distribution traveling crane remains at SQ2.1, and the guide flap remains at SQ1A. The cut tobacco begins to fill the second step block of the first-layer nine-square grid.

[0043] (3) After the weight of the cut tobacco in the second step block reaches g, the cloth traveling crane moves to the SQ1.3 position, the distribution traveling crane remains at SQ2.1, and the guide flap remains at SQ1A. The cut tobacco begins to fill the third step block of the first-layer nine-square grid.

[0044] (4) After the weight of the cut tobacco in the third step block reaches g, the cloth traveling crane remains at the SQ1.3 position. The distribution traveling crane remains at SQ2.1, and the guide flap moves to SQ1C. The cut tobacco begins to fill the fourth step block of the first-layer nine-square grid.

[0045] (5) After the weight of the cut tobacco in the fourth step block reaches g, the cloth traveling crane moves to the SQ1.2 position. The distribution traveling crane remains at SQ2.1, and the guide flap remains at SQ1C. The cut tobacco begins to fill the fifth step block of the first-layer nine-square grid.

[0046] (6) After the weight of the cut tobacco in the fifth step block reaches g, the cloth traveling crane moves to the SQ1.1 position. The distribution traveling crane remains at SQ2.1, and the guide flap remains at SQ1C. The cut tobacco begins to fill the sixth step block of the first-layer nine-square grid.

[0047] (7) After the weight of the cut tobacco in the sixth step block reaches g, the cloth traveling crane remains at the SQ1.1 position. The distribution traveling crane remains at SQ2.1, and the guide flap moves to SQ1B. The cut tobacco begins to fill the seventh step block of the first-layer nine-square grid.

[0048] (8) After the weight of the cut tobacco in the seventh step block reaches g, the cloth traveling crane moves to the SQ1.2 position. The distribution traveling crane remains at SQ2.1, and the guide flap remains at SQ1B. The cut tobacco begins to fill the eighth step block of the first-layer nine-square grid.

[0049] (9) After the weight of the cut tobacco in the eighth step block reaches g, the cloth traveling crane moves to the SQ1.3 position. The distribution traveling crane remains at SQ2.1, and the guide flap remains at SQ1B. The cut tobacco begins to fill the ninth step block of the first-layer nine-square grid.

[0050] After the weight of the cut tobacco in the ninth step block reaches g, the filling of the first layer of cut tobacco is completed and the filling of the second layer begins. The filling order of the second layer is the reverse of that of the first layer, which is steps (9)---(1), and the cut tobacco is filled from the ninth step block to the first step block of the second layer.

[0051] According to the same control method, the odd layers are loaded in the order of the first layer (1)---(9), and the equipment on the even layers is loaded in the order of the second layer (9)---(1), and the cycle continues until the packing weight reaches the set weight G. After the cigarette case packing is completed, the belt scale stops running, and the equipment returns to the initial position after discharging the materials (the cloth traveling crane moves to SQ1.1, the distribution traveling crane moves to SQ2.2, and the guiding flap moves to SQ1A). After the equipment reaches the initial position, the flat pressing plate moves from SQ2B to SQ2A to trim the surface of the cut tobacco, and then returns to SQ2B, and the cut tobacco packing process ends. The full box of cut tobacco is transported to the downstream production line, and at the same time, the empty cigarette case enters the packing station.

[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for controlling the packing of cut tobacco, characterized in that, It includes the following specific steps: S1: Divide the internal space height of the cigarette case into L layers. Each layer is arranged by the 1st - 9th step blocks in a nine - grid structure. The weight g of each step block is calculated by formula (1): Step block weight (1) S2: All devices automatically return to their initial positions: The cloth traveling crane is at its corresponding first proximity switch position; the distribution traveling crane is at its corresponding second proximity switch initial position; the guiding flap is at its corresponding first proximity switch position; the flat pressing plate is at the initial position corresponding to the top proximity switch; S3: After the case packing starts, when the photoelectric tube at the bottom of the case - packing station detects that the cigarette case is in place, the belts of the belt scale, the cloth traveling crane, and the distribution traveling crane start to run. At the same time, the distribution traveling crane moves from the initial position to its corresponding first proximity switch working position, and the cigarette tobacco starts to be packed according to the set parameters. The specific steps are as follows: S31. After the cigarette tobacco is weighed by the belt scale, it is transported through the cloth traveling crane at its corresponding first proximity switch position and the distribution traveling crane at its first proximity switch position to the case - packing station, and is guided by the guiding flap at its corresponding first proximity switch and falls into the 1st step block of the first - layer nine - grid at the bottom of the cigarette case; S32. After the weight of the cigarette tobacco in the 1st step block reaches g, the cloth traveling crane moves to its second proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the guiding flap remains at its first proximity switch position; the cigarette tobacco starts to fill the 2nd step block of the first - layer nine - grid; S33. After the weight of the cigarette tobacco in the 2nd step block reaches g, the cloth traveling crane moves to its third proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the guiding flap remains at its corresponding first proximity switch position; the cigarette tobacco starts to fill the 3rd step block of the first - layer nine - grid; S34. After the weight of the cigarette tobacco in the 3rd step block reaches g, the cloth traveling crane remains at its corresponding third proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the guiding flap moves to its second proximity switch position; the cigarette tobacco starts to fill the 4th step block of the first - layer nine - grid; S35. After the weight of the cigarette tobacco in the 4th step block reaches g, the cloth traveling crane moves to its corresponding second proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the guiding flap remains at its second proximity switch position; the cigarette tobacco starts to fill the 5th step block of the first - layer nine - grid; S36. After the weight of the cigarette tobacco in the 5th step block reaches g, the cloth traveling crane moves to its corresponding first proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the guiding flap remains at its second proximity switch position; the cigarette tobacco starts to fill the 6th step block of the first - layer nine - grid; S37. After the weight of the cigarette tobacco in the 6th step block reaches g, the cloth traveling crane remains at its corresponding first proximity switch position, the distribution traveling crane remains at its first proximity switch position, and the guiding flap moves to its third proximity switch position; the cigarette tobacco starts to fill the 7th step block of the first - layer nine - grid; S38. After the tobacco weight in the 7th step block reaches g, the cloth traveling crane moves to the position corresponding to its second proximity switch, the distribution traveling crane remains at the position corresponding to its first proximity switch, the guiding flap remains at the position corresponding to its third proximity switch, and the tobacco starts to fill the 8th step block of the first-layer nine-square grid. S39. After the tobacco weight in the 8th step block reaches g, the cloth traveling crane moves to the position corresponding to its third proximity switch, the distribution traveling crane remains at the position corresponding to its first proximity switch, the guiding flap remains at the position corresponding to its third proximity switch, and the tobacco starts to fill the 9th step block of the first-layer nine-square grid. S4. After the tobacco weight in the 9th step block reaches g, the filling of the first layer of tobacco is completed and the filling of the second layer starts; the filling order of the second layer is opposite to that of the first layer, and the tobacco is filled from the 9th step block to the 1st step block; the operating order of the guiding flap and the cloth traveling crane is also opposite to that of the first layer, and the specific positions of the guiding flap and the cloth traveling crane when filling each step block are the same as those in the first layer. S5. According to the same control method as in steps S3 and S4, that is, the operating order and positions of the equipment for the odd layers are the same as those of the first layer in step S3, and the operating order and positions of the equipment for the even layers are the same as those of the second layer in step S4. S6. When the packing weight reaches the set weight G, the belt scale stops running; after all equipment returns to the initial position, the flat pressing plate moves from the top proximity switch position to the bottom proximity switch position. After the pressing plate levels the tobacco plane in the cigarette case, it returns to the top proximity switch position. The full cigarette case is conveyed by the conveyor to the downstream process, and at the same time, a new empty cigarette case will be conveyed to the packing station, and the new cigarette case is packed according to the above steps S1 - S5.

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