An automatic control system for packing density

Abstract

This invention discloses an automatic packing density control system, including a longitudinal feeding device, a transverse feeding device, several pressure sensors, and a control unit. The longitudinal feeding device includes a first leveling component and a conveyor belt. The conveyor belt is positioned below the feed belt outlet. The first leveling component is located between the feed belt outlet and the conveyor belt, and includes several parallel leveling rollers and several motors, each of which drives the leveling rollers to rotate. The transverse feeding device is located below the conveyor belt outlet and includes a leveling plate, a swing arm, and a swing cylinder. The swing cylinder drives the leveling plate to swing via the swing arm. Several pressure sensors are evenly distributed on the bottom surface of the pressure head. The control unit is electrically connected to the pressure sensors, motors, and swing cylinder. By real-time detection of the tobacco leaf density at different positions of the tobacco bales in the tobacco box, the distribution of tobacco leaves during the conveying process is automatically adjusted, resulting in a more uniform packing density in the next tobacco box.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tobacco processing equipment, in particular to a bale density automatic control system. BACKGROUND

[0002] In the tobacco primary processing process, after the leaf tobacco is beaten and redried, the cut tobacco is weighed and packed into bales in the pre-pressing and packing system, and then packed into bale boxes. The bale density is one of the important indicators in the pre-pressing and packing system, and its uniformity directly affects the storage and fermentation of tobacco leaves and the use of the tobacco industry. In the prior art, the bale density is mainly manually adjusted by workers according to experience, which has the problems of large workload, high labor intensity, poor adjustment effect, and inability to real-time feedback adjustment, resulting in poor uniformity of single bale density, greater difference between bale boxes, and low automation degree of the pre-pressing and packing process. SUMMARY

[0003] To solve at least one aspect of the above problem, the present application provides a bale density automatic control system, which comprises a longitudinal distributing device, a transverse distributing device, a plurality of pressure sensors and a control unit. The longitudinal distributing device comprises a first material uniformizing assembly and a conveying belt. The conveying belt is arranged below the outlet of the feeding belt. The first material uniformizing assembly is located directly below the outlet of the feeding belt and above the conveying belt. The first material uniformizing assembly comprises a plurality of material uniformizing rollers arranged in parallel and a plurality of motors. The extension direction of the material uniformizing rollers is the same as the conveying direction of the conveying belt. The plurality of motors correspond one-to-one to the plurality of material uniformizing rollers. The motor is connected to the frame of the conveying belt, and the output shaft of the motor is coaxially fixedly connected to the material uniformizing roller. The transverse distributing device is located below the outlet of the conveying belt. The transverse distributing device comprises a material uniformizing plate, a swing arm and a swing cylinder. The extension direction of the material uniformizing plate is perpendicular to the conveying direction of the conveying belt. The top end of the material uniformizing plate is connected to the top of the fixed box. The top end of the material uniformizing plate is fixedly connected to a connecting shaft having the same extension direction as the material uniformizing plate. One end of the swing arm is fixedly connected to one end of the connecting shaft, and the other end of the swing arm is connected to the piston rod end of the swing cylinder. The swing cylinder is arranged on one side of the material uniformizing plate and is inclinedly connected to the fixed box. The plurality of pressure sensors are arranged in rows and columns and are fixedly connected to the bottom surface of the pressure head. The control unit is electrically connected to the plurality of pressure sensors, the plurality of motors and the swing cylinder. The control unit is used to control the operation of the plurality of motors according to the detection results of each row of pressure sensors distributed along the perpendicular conveying direction of the conveying belt and to control the operation of the swing cylinder according to the detection results of each row of pressure sensors distributed along the conveying direction of the conveying belt.

[0004] By the technical scheme, the pressure sensors on the pressure head are used to detect the pressure of the tobacco packets at different positions in the pressing and packing process, so as to detect the tobacco density at different planes above the tobacco case, and according to the tobacco density detected by each row of pressure sensors distributed along the y direction of the tobacco case, the rotation speed and direction of the material uniformizing roller are controlled by the control unit, so that the tobacco density in the y direction of the next tobacco case is more uniform; and according to the tobacco density detected by each row of pressure sensors distributed along the x direction of the tobacco case, the extension speed of the swing cylinder is controlled by the control unit, so that the swing frequency of the material uniformizing plate is controlled, and the tobacco density in the x direction of the next tobacco case is more uniform. The tobacco density at different positions of the tobacco packets in the tobacco case is detected in real time, the distribution state of the tobacco in the conveying process is automatically adjusted, the tobacco density of the tobacco packets in the next tobacco case is more uniform, the automatic adjustment of the case density is realized, the intervention of the workers is reduced, and the uniformity of the case density and the work efficiency are improved.

[0005] Preferably, the longitudinal material uniformizing device further comprises a second material uniformizing assembly, which is arranged above the first material uniformizing assembly; the second material uniformizing assembly comprises a plurality of material uniformizing limiting plates distributed along the conveying direction of the vertical conveying belt, and each of the plurality of material uniformizing limiting plates is arranged opposite to the outlet of the conveying belt; the material uniformizing limiting plate is arranged to be inclined along the direction in which the bottom end of the material uniformizing limiting plate approaches the conveying belt, so that the tobacco on the conveying belt falls on the plurality of material uniformizing rollers through the material uniformizing limiting plate.

[0006] Preferably, the second material uniformizing assembly further comprises a plurality of push cylinders, each of the plurality of push cylinders corresponds to one of the plurality of material uniformizing limiting plates; the extension direction of the piston rod of the push cylinder is the same as the conveying direction of the conveying belt; the push cylinder is fixedly connected with the rack of the conveying belt; the end of the piston rod of the push cylinder is fixedly connected with the material uniformizing limiting plate; and each of the plurality of push cylinders is electrically connected with the control unit, and is used to control the operation of the plurality of push cylinders according to the detection result of each row of pressure sensors distributed along the conveying direction of the vertical conveying belt. By the technical scheme, the stroke of each of the plurality of push cylinders is controlled by the control unit, so that the plurality of material uniformizing limiting plates are driven to be located at different positions, and the tobacco on the conveying belt falls on different positions of the plurality of material uniformizing rollers, which is helpful to further improve the uniformity of the distribution of the tobacco on the conveying belt.

[0007] Preferably, the first uniformizing assembly further comprises a plurality of sliding seats, at least one sliding rail and a plurality of drive cylinders; the plurality of sliding seats are in one-to-one correspondence with the plurality of uniformizing rollers, the motor is fixedly connected with the sliding seat, and the uniformizing roller is rotationally connected with the sliding seat; the extension direction of the sliding rail is perpendicular to the conveying direction of the conveying belt, the sliding rail is fixedly connected on the rack of the conveying belt, and the bottom end of the sliding seat is slidingly connected with the sliding rail along the extension direction of the sliding rail; the plurality of drive cylinders are in one-to-one correspondence with the plurality of sliding seats, the drive cylinder is fixedly connected on the rack of the conveying belt, the piston rod end of the drive cylinder is fixedly connected with the sliding seat, and the plurality of drive cylinders are electrically connected with the control unit for controlling the operation of the plurality of drive cylinders according to the detection results of each row of pressure sensors distributed along the vertical conveying direction of the conveying belt. Through the above technical solution, the stroke of the plurality of drive cylinders is controlled by the control unit, the sliding seat is driven to slide on the sliding rail, the spacing between the plurality of uniformizing rollers is adjusted, and the uniformity of the tobacco distribution on the conveying belt is further improved.

[0008] Preferably, a plurality of sliding rails are provided, respectively arranged on the racks on both sides of the conveying belt along the vertical conveying direction of the conveying belt, and the plurality of sliding seats are arranged on the sliding rails on both sides.

[0009] Preferably, at least one bearing seat is fixedly connected on the sliding seat, and the bearing seat is coaxially fixedly connected with the uniformizing roller.

[0010] Preferably, the top end of the uniformizing plate is provided with a fixed strip along the extension direction thereof, and the connecting shaft is rotationally connected in the fixed strip; the transverse distribution device further comprises two sliding shafts, at least two sliding blocks, a moving seat and a moving cylinder; the extension direction of the sliding shaft is perpendicular to the extension direction of the uniformizing plate, and the two sliding shafts are respectively fixedly connected on the fixed boxes at the two ends of the uniformizing plate; the two sliding blocks are respectively fixedly connected on the two ends of the fixed strip and are respectively slidingly connected with the two sliding shafts along the extension direction of the sliding shaft; the moving seat is fixedly connected with the sliding block on one of the sliding shafts, and the swing cylinder is connected on the moving seat; the extension direction of the piston rod of the moving cylinder is perpendicular to the extension direction of the uniformizing plate, the moving cylinder is fixedly connected on the fixed box, and the end of the piston rod of the moving cylinder is fixedly connected with the fixed strip; the moving cylinder is electrically connected with the control unit for controlling the operation of the moving cylinder according to the detection results of each row of pressure sensors distributed along the conveying direction of the conveying belt. Through the above technical solution, the stroke of the moving cylinder is controlled by the control unit, the sliding block is driven to slide on the sliding shaft, the position of the uniformizing plate is adjusted, and the tobacco density in the x direction in the fixed box is adjusted.

[0011] Preferably, the transverse distributing device further comprises a limiting cylinder, which is located on the side of the swing cylinder away from the swing arm, is fixedly connected to the moving seat, and has a piston rod end fixedly connected to the swing cylinder; the limiting cylinder is electrically connected to the control unit and is used for controlling the operation of the limiting cylinder according to the detection results of each row of pressure sensors distributed along the conveying direction of the conveying belt. Through the above technical solution, the stroke of the limiting cylinder is controlled by the control unit, the position of the swing cylinder is adjusted, and the swing angle of the uniformizing plate is adjusted.

[0012] Preferably, two limiting columns are connected to the moving seat and are distributed along the vertical direction of the uniformizing plate, are arranged on the two sides of the swing arm respectively, and are arranged opposite to the swing arm. Through the above technical solution, the swing limit of the swing arm is limited by the two limiting columns, and the stability of the operation of the transverse distributing device is improved.

[0013] Preferably, the conveying belt is a bidirectional conveying belt, and the transverse distributing device is provided with two groups and is arranged at the two outlets of the conveying belt respectively.

[0014] The automatic packing density control system has the following beneficial effects:

[0015] By arranging a plurality of pressure sensors on the pressure head, the tobacco leaf density at different positions in the tobacco box is detected in real time, the rotation speed and direction of the motor on the longitudinal distributing device are controlled according to the tobacco leaf density results detected by each row of pressure sensors distributed in the y direction of the tobacco box, the rotation speed and direction of the uniformizing roller are adjusted, the stroke of the driving cylinder is controlled to adjust the distance between the uniformizing rollers, and the stroke of the pushing cylinder is controlled to adjust the position of the uniformizing limiting plate, so that the tobacco leaf density in the y direction of the next tobacco box is adjusted; the operation speed of the swing cylinder on the transverse distributing device is controlled according to the tobacco leaf density results detected by each row of pressure sensors distributed in the x direction of the tobacco box, the swing frequency of the uniformizing plate is adjusted, the stroke of the moving cylinder is controlled to adjust the position of the uniformizing plate, and the stroke of the limiting cylinder is controlled to adjust the swing angle of the uniformizing plate, so that the tobacco leaf density in the x direction of the next tobacco box is adjusted, the tobacco leaf density in the next tobacco box is more uniform, the automatic adjustment of the packing density is realized, the intervention of the staff is reduced, the uniformity of the packing density is improved, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] For better understanding of the above and other objects, features, advantages and functions of the present application, reference can be made to the embodiments shown in the drawings. The same reference signs in the drawings refer to the same parts. Those skilled in the art should understand that the drawings are intended to illustrate the preferred embodiments of the present application, and have no limiting effect on the scope of the present application, and the various parts in the drawings are not drawn to scale.

[0017] Figure 1Fig. 1 shows a structural schematic diagram of a packing density automatic control system according to an embodiment of the present application;

[0018] Figure 2 Fig. 2 shows a structural schematic diagram of a longitudinal distributing device of a packing density automatic control system according to an embodiment of the present application;

[0019] Figure 3 Fig. 3 shows a top view of a longitudinal distributing device of a packing density automatic control system according to an embodiment of the present application;

[0020] Figure 4 Fig. 4 shows a structural schematic diagram of a transverse distributing device of a packing density automatic control system according to an embodiment of the present application;

[0021] Figure 5 Fig. 5 shows a structural schematic diagram of a pressure head of a packing density automatic control system according to an embodiment of the present application.

[0022] BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 1, first pressure sensor; 2, second pressure sensor; 3, third pressure sensor; 4, fourth pressure sensor; 5, fifth pressure sensor; 6, sixth pressure sensor; 7, seventh pressure sensor; 8, eighth pressure sensor; 9, ninth pressure sensor; 10, pressure head; 11, longitudinal distributing device; 111, material-distributing roller; 112, motor; 113, sliding seat; 114, bearing seat; 115, sliding rail; 116, driving cylinder; 117, material-distributing limiting plate; 118, pushing cylinder; 119, conveying belt; 12, transverse distributing device; 121, material-distributing plate; 1211, connecting shaft; 1212, fixed strip; 122, swing arm; 123, swing cylinder; 124, sliding shaft; 1241, fixed block; 125, sliding block; 126, moving seat; 1261, first plate; 1262, second plate; 127, moving cylinder; 128, limiting cylinder; 129, limiting column; 1210, connecting seat; 13, feeding belt; 14, fixed box. DETAILED DESCRIPTION

[0024] Exemplary embodiments of the present disclosure are described herein with reference to the accompanying drawings, which are meant to be exemplary. Therefore, it should be recognized that various modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Also, descriptions of known functions and constructions are omitted for clarity and conciseness.

[0025] The term "including" and variations thereof, as used in this document, mean "including, but not limited to," unless expressly specified otherwise. The term "or" means "and / or" unless expressly specified otherwise. The term "based on" means "based, at least in part, on" unless expressly specified otherwise. The term "one example embodiment" and "an example embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment." The terms "a first," "a second," etc. can refer to different or the same objects. Other explicitly and implicitly recited definitions come from the following detailed description.

[0026] To at least partially solve one or more of the above problems and other potential problems, one embodiment of the present disclosure proposes a case packing density automatic control system, comprising a longitudinal distributing device 11, a transverse distributing device 12, a plurality of pressure sensors and a control unit; the longitudinal distributing device 11 comprises a first uniform material assembly and a conveying belt 119; the conveying belt 119 is arranged below the outlet of the feeding belt 13; the first uniform material assembly is located directly below the outlet of the feeding belt 13 and above the conveying belt 119, and comprises a plurality of uniform material rollers 111 arranged in parallel and oppositely and a plurality of motors 112 corresponding to the plurality of uniform material rollers 111 one by one; the extension direction of the uniform material rollers 111 is the same as the conveying direction of the conveying belt 119; the motors 112 are connected with the rack of the conveying belt 119; the output shaft of the motor 112 is coaxially fixedly connected with the uniform material roller 111; the transverse distributing device 12 is located below the outlet of the conveying belt 119, and comprises a uniform material plate 121, a swing arm 122 and a swing cylinder 123; the extension direction of the uniform material plate 121 is perpendicular to the conveying direction of the conveying belt 119; the top end of the uniform material plate 121 is connected to the top of the fixed box 14, and the top end of the uniform material plate 121 is fixedly connected with a connecting shaft 1211 in the same extension direction; one end of the swing arm 122 is fixedly connected with one end of the connecting shaft 1211, and the other end of the swing arm 122 is connected with the piston rod end of the swing cylinder 123; the swing cylinder 123 is arranged on one side of the uniform material plate 121 and is inclinedly connected to the fixed box 14; the plurality of pressure sensors are distributed in rows and columns and are fixedly connected to the bottom surface of the pressure head 10; the control unit is electrically connected with the plurality of pressure sensors, the plurality of motors 112 and the swing cylinder 123, and is used for controlling the operation of the plurality of motors 112 according to the detection results of each row of pressure sensors distributed along the perpendicular conveying direction of the conveying belt 119, and controlling the operation of the swing cylinder 123 according to the detection results of each row of pressure sensors distributed along the conveying direction of the conveying belt 119.

[0027] Specifically, as Figures 1 to 5As shown, the conveying belt 119 is preferably a bidirectional conveying belt 119, which is horizontally arranged along the x direction, and the two ends of the frame of the conveying belt 119 are fixedly connected to the frames of the two pressing heads 10; the conveying direction of the feeding belt 13 is preferably perpendicular to the conveying direction of the conveying belt 119, i.e., along the y direction, and the conveying belt 119 is arranged below the outlet of the feeding belt 13. Preferably, the outlet of the feeding belt 13 corresponds to the middle region of the conveying belt 119.

[0028] The first material uniformizing assembly is located directly below the outlet of the feeding belt 13 and above the conveying belt 119, and includes a plurality of parallel and opposite material uniformizing rollers 111 and a plurality of motors 112. The extension direction of the material uniformizing rollers 111 is the same as the conveying direction of the conveying belt 119, i.e., along the x direction, and the extension size of the material uniformizing rollers 111 matches the size of the feeding belt 13 in the x direction. The plurality of motors 112 correspond one-to-one to the plurality of material uniformizing rollers 111. The motors 112 are connected to the frame of the conveying belt 119, and the output shafts of the motors 112 are coaxially fixedly connected to the material uniformizing rollers 111. In some embodiments, the first material uniformizing assembly further includes a plurality of sliding seats 113, at least one sliding rail 115, and a plurality of drive cylinders 116. The plurality of sliding seats 113 correspond one-to-one to the plurality of material uniformizing rollers 111. At least one bearing seat 114 is fixedly connected to the sliding seat 113. In this embodiment, two opposite bearing seats 114 are fixedly connected to each sliding seat 113. One end of the material uniformizing roller 111 is coaxially fixedly connected to the two bearing seats 114, and the motor 112 is fixedly connected to the sliding seat 113. The sliding rail 115 is provided with a plurality of sliding rails 115. In this embodiment, the sliding rail 115 is provided with four sliding rails 115, which are fixedly connected to the frames on both sides of the middle region of the conveying belt 119 along the y direction perpendicular to the conveying direction of the conveying belt 119. The extension direction of the sliding rail 115 is perpendicular to the conveying direction of the conveying belt 119, i.e., along the y direction. The plurality of sliding seats 113 are arranged on the two sliding rails 115 on both sides, and the bottom end of the sliding seat 113 is slidingly connected to the sliding rail 115 along the extension direction of the sliding rail 115. In this embodiment, the sliding seat 113 is slidingly connected to the two sliding rails 115. The plurality of drive cylinders 116 correspond one-to-one to the plurality of sliding seats 113. The drive cylinders 116 are fixedly connected to the frame of the conveying belt 119, the extension direction of the piston rod of the drive cylinder 116 is the y direction, and the end of the piston rod of the drive cylinder 116 is fixedly connected to the sliding seat 113.

[0029] In some embodiments, the longitudinal material distributing device 11 further comprises a second material uniformizing assembly arranged above the first material uniformizing assembly, the second material uniformizing assembly comprising a plurality of material uniformizing limiting plates 117 and a plurality of pushing air cylinders 118; the plurality of material uniformizing limiting plates 117 are distributed along the vertical conveying direction of the conveying belt 13, i.e., the x direction, and are arranged opposite to the outlet of the conveying belt 13, preferably, the distance between the material uniformizing limiting plates 117 at both ends matches the width of the conveying belt 13, and the material uniformizing limiting plates 117 are arranged obliquely along the direction in which the bottom end thereof is close to the conveying belt 13, so that the tobacco leaves on the conveying belt 13 fall on the plurality of material uniformizing rollers 111 through the material uniformizing limiting plates 117; the plurality of pushing air cylinders 118 correspond to the plurality of material uniformizing limiting plates 117 one by one, the extension direction of the piston rod of the pushing air cylinder 118 is the same as the conveying direction of the conveying belt 13, i.e., the y direction, the pushing air cylinder 118 is fixedly connected to the rack along the x direction side of the conveying belt 119, and the end of the piston rod of the pushing air cylinder 118 is fixedly connected to the material uniformizing limiting plate 117.

[0030] The transverse material distributing device 12 is preferably provided with two groups arranged below the two outlets of the conveying belt 119; the transverse material distributing device 12 comprises a material uniformizing plate 121, a swing arm 122 and a swing air cylinder 123; the extension direction of the material uniformizing plate 121 is perpendicular to the conveying direction of the conveying belt 119, i.e., along the y direction, the top end of the material uniformizing plate 121 is connected to the top of the fixed box 14, and the top end of the material uniformizing plate 121 is fixedly connected to a connecting shaft 1211 which has the same extension direction as the material uniformizing plate 121; the swing arm 122 is v-shaped, the swing arm 122 is arranged at one end of the material uniformizing plate 121, one end of the swing arm 122 is fixedly connected to one end of the connecting shaft 1211, and the other end of the swing arm 122 is hingedly connected to the end of the piston rod of the swing air cylinder 123, so that the extension of the piston rod of the swing air cylinder 123 drives the swing arm 122 to rotate; the swing air cylinder 123 is arranged at one side of the material uniformizing plate 121, and the swing air cylinder 123 is obliquely connected to the fixed box 14.

[0031] In some embodiments, the top end of the material leveling plate 121 is provided with a fixed strip 1212 extending along the direction of the material leveling plate 121, the fixed strip 1212 is hollow inside and open at the bottom, the connecting shaft 1211 is arranged in the fixed strip 1212 and is rotationally connected with the fixed strip 1212, and the material leveling plate 121 is arranged in the open structure of the fixed strip 1212; the transverse material distributing device 12 further comprises two slide shafts 124, at least two sliding blocks 125, a moving seat 126, a connecting seat 1210 and a moving cylinder 127; the two slide shafts 124 are respectively arranged at the two ends of the material leveling plate 121, the extension direction of the slide shaft 124 is perpendicular to the extension direction of the material leveling plate 121, that is, along the x direction; the two ends of the slide shaft 124 are fixedly connected with a fixed block 1241, and the two fixed blocks 1241 are fixedly connected to the edges of the top end of the fixed box 14; in this embodiment, the sliding block 125 is provided with four, two of which are fixedly connected to the two ends of the fixed strip 1212, and the four sliding blocks 125 are respectively slidably connected with the two slide shafts 124 along the extension direction of the slide shaft 124; the connecting seat 1210 is arranged at one end of the material leveling plate 121, and the two ends of the connecting seat 1210 are fixedly connected with the two slide seats 113; the moving seat 126 is arranged at the other end of the material leveling plate 121, and the moving seat 126 comprises a first plate 1261 and two second plates 1262 fixedly connected, the first plate 1261 extends along the x direction and is vertically arranged, the first plate 1261 is fixedly connected with the two slide seats 113, and the swing cylinder 123 is connected to the first plate 1261; the two second plates 1262 are vertically and oppositely arranged at the side of the first plate 1261 close to the material leveling plate 121; preferably, the swing arm 122 is arranged between the two second plates 1262, the two second plates 1262 are respectively connected with a limiting column 129, the extension direction of the limiting column 129 is preferably the x direction, and the end of the two limiting columns 129 is arranged opposite to the swing arm 122; preferably, the limiting column 129 is a limiting bolt, and the limiting bolt is threadedly connected with the second plate 1262; the extension direction of the piston rod of the moving cylinder 127 is perpendicular to the extension direction of the material leveling plate 121, that is, along the x direction, the moving cylinder 127 is fixedly connected to the edges of the top end of the fixed box 14, and the end of the piston rod of the moving cylinder 127 is fixedly connected with the middle region of the fixed strip 1212.

[0032] In some embodiments, the transverse material distributing device 12 further comprises a limiting cylinder 128, which is located on the side of the swing cylinder 123 away from the swing arm 122, is fixedly connected to the side of the first plate 1261, and has the piston rod end fixedly connected with the swing cylinder 123.

[0033] The plurality of pressure sensors are arranged in a row-column distribution and are fixedly connected to the bottom surface of the pressure head 10; specifically, as shown in Figure 5As shown, in the present embodiment, nine pressure sensors are arranged, and the nine pressure sensors are evenly distributed in 3 rows and 3 columns on the bottom surface of the pressing head 10; in the production process, the pressing head 10 extends into the fixing box 14, and the tobacco leaves in the fixing box 14 are pressed into tobacco bales to the tobacco box below the fixing box 14, and in this process, the density of the tobacco leaves at different positions of the tobacco bales is detected, so the sizes of the fixing box 14, the pressing head 10 and the tobacco box are matched, and the x direction and the y direction of the three are consistent.

[0034] The control unit is electrically connected with the plurality of pressure sensors, the plurality of motors 112, the plurality of drive air cylinders 116, the plurality of push air cylinders 118, the swing air cylinder 123, the moving air cylinder 127 and the limiting air cylinder 128, and is used for controlling the operation of the plurality of motors 112 according to the detection results of each row of pressure sensors distributed along the y direction of the vertical conveying belt 119, and controlling the operation of the swing air cylinder 123 according to the detection results of each row of pressure sensors distributed along the x direction of the conveying belt 119; specifically, according to the detection result changes of each row of pressure sensors distributed along the y direction of the tobacco bales in the tobacco box, i.e., the detection result changes of the first pressure sensor 1, the second pressure sensor 2 and the third pressure sensor 3, the detection result changes of the fourth pressure sensor 4, the fifth pressure sensor 5 and the sixth pressure sensor 6, and the detection result changes of the seventh pressure sensor 7, the eighth pressure sensor 8 and the ninth pressure sensor 9, the rotational speed and the rotational direction of the plurality of motors 112, the stroke of the plurality of drive air cylinders 116 and the stroke of the plurality of push air cylinders 118 are respectively controlled by the control unit; according to the detection result changes of each row of pressure sensors distributed along the x direction of the tobacco bales in the tobacco box, i.e., the detection result changes of the first pressure sensor 1, the fourth pressure sensor 4 and the seventh pressure sensor 7, the detection result changes of the second pressure sensor 2, the fifth pressure sensor 5 and the eighth pressure sensor 8, and the detection result changes of the third pressure sensor 3, the sixth pressure sensor 6 and the ninth pressure sensor 9, the operating speed of the swing air cylinder 123, the stroke of the moving air cylinder 127 and the stroke of the limiting air cylinder 128 are respectively controlled by the control unit.

[0035] The above has described the embodiments of the present disclosure, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical applications or technical improvements in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the present document.

Claims

1. A case packing density automatic control system characterized by: The device comprises a longitudinal material distributing device (11), a transverse material distributing device (12), a plurality of pressure sensors and a control unit; The longitudinal material distributing device (11) comprises a first material distributing assembly, a second material distributing assembly and a conveying belt (119); The conveying belt (119) is arranged below the outlet of the feeding belt (13); The first material distributing assembly is arranged directly below the outlet of the feeding belt (13) and above the conveying belt (119), and comprises a plurality of parallel and oppositely arranged material distributing rollers (111), a plurality of motors (112), a plurality of sliding seats (113), at least one sliding rail (115) and a plurality of driving cylinders (116); the extending direction of the material distributing rollers (111) is the same as the conveying direction of the conveying belt (119); the plurality of motors (112) correspond to the plurality of material distributing rollers (111) one by one; the motor (112) is connected with the frame of the conveying belt (119); the output shaft of the motor (112) is coaxially fixedly connected with the material distributing roller (111); the plurality of sliding seats (113) correspond to the plurality of material distributing rollers (111) one by one; the motor (112) is fixedly connected with the sliding seat (113); the material distributing roller (111) is rotationally connected with the sliding seat (113); the extending direction of the sliding rail (115) is perpendicular to the conveying direction of the conveying belt (119); the sliding rail (115) is fixedly connected with the frame of the conveying belt (119); the bottom end of the sliding seat (113) is slidingly connected with the sliding rail (115) along the extending direction of the sliding rail (115); the plurality of driving cylinders (116) correspond to the plurality of sliding seats (113) one by one; the driving cylinder (116) is fixedly connected with the frame of the conveying belt (119); the piston rod end of the driving cylinder (116) is fixedly connected with the sliding seat (113); The second material distributing assembly is arranged above the first material distributing assembly; the second material distributing assembly comprises a plurality of material distributing limiting plates (117) and a plurality of pushing cylinders (118) which are distributed along the direction perpendicular to the conveying direction of the feeding belt (13); the plurality of material distributing limiting plates (117) are oppositely arranged with the outlet of the feeding belt (13); the material distributing limiting plate (117) is arranged in an inclined manner along the direction in which the bottom end of the material distributing limiting plate (117) approaches the feeding belt (13), so that the tobacco leaves on the feeding belt (13) fall on the plurality of material distributing rollers (111) through the material distributing limiting plate (117); the plurality of pushing cylinders (118) correspond to the plurality of material distributing limiting plates (117) one by one; the extending direction of the piston rod of the pushing cylinder (118) is the same as the conveying direction of the feeding belt (13); the pushing cylinder (118) is fixedly connected with the frame of the conveying belt (119); the piston rod end of the pushing cylinder (118) is fixedly connected with the material distributing limiting plate (117); The transverse distributing device (12) is located below the outlet of the conveying belt (119), and comprises a distributing plate (121), a swing arm (122) and a swing cylinder (123). The extending direction of the distributing plate (121) is perpendicular to the conveying direction of the conveying belt (119), the top end of the distributing plate (121) is connected to the top of the fixed box (14), and the top end of the distributing plate (121) is fixedly connected with a connecting shaft (1211) extending in the same direction. One end of the swing arm (122) is fixedly connected with one end of the connecting shaft (1211), and the other end of the swing arm (122) is connected with the piston rod end of the swing cylinder (123). The swing cylinder (123) is arranged on one side of the distributing plate (121) and is inclinedly connected to the fixed box (14). The pressure sensors are arranged in rows and columns and are fixedly connected to the bottom surface of the pressure head (10). The control unit is electrically connected with the pressure sensors, the motors (112), the driving cylinders (116), the pushing cylinders (118) and the swing cylinder (123), and is used for controlling the operation of the motors (112), the driving cylinders (116) and the pushing cylinders (118) according to the detection results of each row of pressure sensors arranged along the vertical conveying direction of the conveying belt (119), and controlling the operation of the swing cylinder (123) according to the detection results of each row of pressure sensors arranged along the conveying direction of the conveying belt (119).

2. The automatic container density control system of claim 1, wherein: The slide rails (115) are arranged in multiple numbers and are arranged on the racks on both sides of the conveying belt (119) along the vertical conveying direction of the conveying belt (119), and the slide seats (113) are arranged on the slide rails (115) on both sides.

3. The system of claim 1, wherein: The slide seat (113) is fixedly connected with at least one bearing seat (114) coaxially.

4. The system of claim 1, wherein: The top end of the uniform material plate (121) is provided with a fixed strip (1212) extending along the direction thereof, and the connecting shaft (1211) is rotatably connected in the fixed strip (1212); the transverse material distributing device (12) further comprises two slide shafts (124), at least two sliding blocks (125), a moving seat (126) and a moving cylinder (127); the extension direction of the slide shaft (124) is perpendicular to the extension direction of the uniform material plate (121), and the two slide shafts (124) are respectively fixedly connected to the fixed boxes (14) at the two ends of the uniform material plate (121); the two sliding blocks (125) are respectively fixedly connected to the two ends of the fixed strip (1212) and are respectively slidably connected to the two slide shafts (124) along the extension direction of the slide shaft (124); the moving seat (126) is fixedly connected to the sliding block (125) on one slide shaft (124), and the swing cylinder (123) is connected to the moving seat (126); the extension direction of the piston rod of the moving cylinder (127) is perpendicular to the extension direction of the uniform material plate (121), the moving cylinder (127) is fixedly connected to the fixed box (14), and the piston rod end of the moving cylinder (127) is fixedly connected to the fixed strip (1212); the moving cylinder (127) is electrically connected to the control unit, and is used for controlling the operation of the moving cylinder (127) according to the detection results of each row of pressure sensors distributed along the conveying direction of the conveying belt (119).

5. The system of claim 4, wherein: The transverse material distributing device (12) further comprises a limiting cylinder (128), which is located on the side of the swing cylinder (123) away from the swing arm (122), is fixedly connected to the moving seat (126), and has a piston rod end fixedly connected to the swing cylinder (123); the limiting cylinder (128) is electrically connected to the control unit, and is used for controlling the operation of the limiting cylinder (128) according to the detection results of each row of pressure sensors distributed along the conveying direction of the conveying belt (119).

6. The system of claim 4, wherein: The moving seat (126) is connected with two limiting columns (129) distributed along the direction perpendicular to the extension direction of the uniform material plate (121) and arranged on the two sides of the swing arm (122) respectively and opposite to the swing arm (122).

7. The system of claim 1, wherein: The conveying belt (119) is a bidirectional conveying belt (119), and the transverse material distributing device (12) is provided with two groups arranged at the two outlets of the conveying belt (119).

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