CN212393821U

CN212393821U - Tobacco leaf grading screening machine

Info

Publication number: CN212393821U
Application number: CN202020515606.XU
Authority: CN
Inventors: 程瑶; 何春晖; 木军龙; 陈云
Original assignee: Chongqing Anmu Technology Co ltd
Current assignee: Chongqing Anmu Technology Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2021-01-26
Anticipated expiration: 2030-04-09

Abstract

A tobacco leaf grading screening machine comprises a leaf turning device and a sorting device, wherein the leaf turning device comprises two conveying belts and a driving motor, the secondary conveying belt is provided with a guide support, the primary conveying belt is provided with a first dark box, the first dark box is provided with a color identifier, and the sorting device comprises three conveying belts; the first conveyer belt has a second dark box with a dense beam scanner and a third dark box with a spectrometer, and a manipulator is arranged between the conveyer belts. The utility model discloses a tobacco leaf classified screening machine passes through multistage on-line scanning, can high efficiency grade and screen the tobacco leaf, and is efficient, and the accuracy is high, can satisfy the demand of trade. The tobacco leaf on-line detection consistency can be ensured by the arranged leaf turning device, so that the accuracy of tobacco leaf grading and screening is improved. The sorting device sorts the conveyed tobacco leaves through a parallel conveying technology and a parallel robot, so that the quick conveying and sorting are ensured, and the working efficiency of classified screening is improved.

Description

Tobacco leaf grading screening machine

Technical Field

The utility model belongs to the mechanical equipment field especially relates to a tobacco leaf classified screening machine.

Background

The classification and selection before the redrying of the tobacco leaves are always a difficult problem in the industry, and in recent years, the units and universities for researching the technology at home and abroad mainly use the industrial camera imaging technology as the aided technology.

However, when the industrial camera imaging technology is applied to sorting before redrying the tobacco leaves, if camera imaging is adopted, the data processing of the camera imaging is too huge due to too large difference of the shapes and sizes of the tobacco leaves, and the detection efficiency of the tobacco leaves is reduced. If the spectrometer is adopted, the detection area of the spectrometer is too small, the integrity of the tobacco leaves cannot be detected, and detection errors are easily caused. The inspection errors of the camera and the spectrometer are increased due to the large front-back color difference of the tobacco leaves, so that the requirements of the industry are difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model discloses there is the problem of inefficiency, effect difference to above-mentioned current hierarchical selection technique, provides a high-efficient and accurate tobacco leaf classified screening machine.

In order to achieve the above object, the utility model discloses a technical scheme be:

a tobacco leaf grading screening machine comprises a leaf turning device, a sorting device and a controller;

the leaf turning device comprises a primary conveying belt, a secondary conveying belt and a driving motor;

a guide bracket is slidably mounted on a shell of the secondary conveyor belt, and inclined guide surfaces are arranged on two sides of the guide bracket;

the rear end of the first-stage conveying belt is positioned above the second-stage conveying belt, and a movement space for the guide support to enter is arranged between the first-stage conveying belt and the second-stage conveying belt;

a first dark box capable of enabling materials to pass through is installed on a shell of the first-stage conveying belt, a color identifier is installed in the first dark box, and the color identifier is electrically connected with a controller;

the driving motor is electrically connected with the controller, is connected with the guide bracket through a mechanical transmission mechanism and is used for driving the guide bracket to reciprocate;

the sorting device comprises a first conveying belt, a second conveying belt and a third conveying belt;

the front end of the first conveying belt is connected with the rear end of the second-stage conveying belt;

a second camera bellows and a third camera bellows which can lead materials to pass through are arranged on the shell of the first conveyer belt;

a dense light beam scanner is arranged in the second camera bellows and is electrically connected with the controller;

a chromatograph is arranged in the third camera bellows and is electrically connected with the controller;

a first manipulator is arranged on a fixed support arranged between the racks of the first conveying belt and the second conveying belt and used for transferring the materials on the first conveying belt to the second conveying belt;

a second manipulator is arranged on a fixed support arranged between the racks of the first conveying belt and the third conveying belt and used for transferring the materials on the first conveying belt to the third conveying belt;

the second camera bellows, the first manipulator, the third camera bellows and the second manipulator are sequentially arranged from front to back, and the first manipulator and the second manipulator are electrically connected with the controller.

Preferably, the leaf turning device further comprises a fixed seat fixed on the ground, and a swing rod is hinged on the fixed seat;

the driving motor is fixed on the ground, a driving disc is coaxially installed on a main shaft of the driving motor, one end of the oscillating bar is hinged with the driving disc, and the other end of the oscillating bar is hinged on a push-pull rod horizontally arranged on the guide support.

Preferably, the guide bracket has an inverted V-shape.

Preferably, the first conveying belt, the second conveying belt and the third conveying belt are arranged in parallel, and the second conveying belt and the third conveying belt are respectively positioned on two sides of the first conveying belt.

Preferably, the first robot and the second robot are both parallel robots.

Preferably, the transfer device further comprises a transfer device, wherein the transfer device comprises a seven-axis robot and a bin;

the three material boxes are respectively arranged below the rear ends of the first conveying belt, the second conveying belt and the third conveying belt;

the bin comprises a main rod, box plates are vertically connected to two ends of the main rod, a plurality of ribs arranged in a comb shape are arranged on two sides of the main rod, and the outer sides of the ribs are bent upwards to form comb-shaped bin walls on two sides of the bin;

the gripper of the seven-axis robot comprises a connecting seat and a supporting claw;

the two supporting claws are oppositely arranged, one end of each supporting claw is connected with the connecting seat and is in a comb shape, and the tooth pitch is the same as the pitch of the adjacent ribs.

Preferably, the box plate on the material box is fixedly connected to the shell of the corresponding conveying belt, and a running space for the supporting claw to move into is arranged between the main rod of the material box and the ground.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

the utility model discloses a tobacco leaf classified screening machine passes through multistage on-line scanning, can high efficiency grade and screen the tobacco leaf, and is efficient, and the accuracy is high, can satisfy the demand of trade. The tobacco leaf on-line detection consistency can be ensured by the arranged leaf turning device, so that the accuracy of tobacco leaf grading and screening is improved. The sorting device sorts the conveyed tobacco leaves through a parallel conveying technology and a parallel robot, so that the quick conveying and sorting are ensured, and the working efficiency of classified screening is improved.

The driving motor in the leaf turning device drives the guide support to reciprocate through the crank connecting rod structure, so that the moving speed of the guide support is higher, the reciprocating movement range is easier to control, the accuracy of the running position of the guide support is ensured, and the smooth operation of leaf turning is ensured.

Sorting unit's conveyer belt sets up side by side, makes adjacent conveyer belt paste each other and leans on, interval minimizing to reduced the moving distance of the parallel robot as the manipulator, made its conveying of carrying out the material between the conveyer belt that can be quick, guaranteed the speed of screening in grades.

The workbin of transfer device is the broach workbin, can make seven axis robot's tongs pass the workbin from bottom to top, holds up the material of putting in the workbin simultaneously and shifts out, guarantees that the tobacco leaf keeps range upon range of stacking in the transportation, makes the tobacco leaf through transporting keep neat.

Drawings

FIG. 1 is a schematic structural view of the tobacco leaf grading and screening machine of the present invention;

FIG. 2 is a cross-sectional structural view of a leaf turning device in the tobacco leaf classification screening machine of the present invention;

FIG. 3 is a schematic structural view of a transfer device in the tobacco classifying and screening machine of the present invention;

in the above figures: 1. a leaf turning device; 2. a sorting device; 11. a first-stage conveying belt; 12. a secondary conveyer belt; 13. a drive motor; 14. a guide bracket; 14A, a guide surface; 15. a motion space; 16. a fixed seat; 17. a swing rod; 18. a drive disc; 19. a push-pull rod; 2. a sorting device; 21. a first conveyor belt; 22. a second conveyor belt; 23. a third conveyor belt; 31. a first dark box; 32. a second dark box; 33. a third dark box; 4. fixing a bracket; 51. a first manipulator; 52. a second manipulator; 6. A transfer device; 61. a seven-axis robot; 61A, a connecting seat; 61B, supporting claws; 62. a material box; 62A, a main rod; 62B, boxboards; 62C, ribs.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 and 2, the utility model provides a tobacco leaf grading and screening machine, which comprises a leaf turning device 1, a sorting device 2 and a controller. The controller is a control terminal for the overall operation of the device, and is not shown in the drawing.

The leaf turning device 1 comprises a primary conveyer belt 11, a secondary conveyer belt 12 and a driving motor 13.

A guide bracket 14 is slidably mounted on the housing of the secondary conveyor 12, and inclined guide surfaces 14A are provided on both sides of the guide bracket 14 so that the tobacco leaves can slide down along the guide surfaces 14A.

The rear end of the primary conveyor belt 11 is located above the secondary conveyor belt 12, and a movement space 15 into which the guide bracket can enter is provided between the two.

A first camera bellows 31 is installed on the casing of the first-level conveyer belt 11, the first camera bellows 31 is of an arch structure, a color identifier is installed in the first camera bellows 31, and the color identifier is electrically connected with the controller. The material moving on the primary conveyor belt 11 can pass through the door opening formed by the first camera bellows 31, where it is scanned by the color identifier.

The driving motor 13 is fixed on the ground or on the fixing frame, electrically connected with the controller, and connected with the guide fixing frame 14 through a mechanical transmission mechanism to drive the guide support 14 to reciprocate.

The reciprocating sliding of the guide support 14 is realized, the mechanical transmission mechanism can adopt a gear and rack transmission structure, a rack is fixedly arranged on the guide support and is parallel to the moving direction of the guide support 14, a gear is fixedly arranged on a main shaft of the driving motor 13, the gear is meshed with the rack, and the guide support 14 is driven to slide by the forward rotation and the overturn of the driving motor 13 and the transmission of the gear and the rack.

The connecting and disconnecting transmission mechanism can also adopt a crank connecting rod structure, a fixed seat 16 is fixedly arranged on the ground, and a swing rod 17 is hinged on the fixed seat 16. The driving motor 13 is fixed on the ground, and a driving disc 18 is coaxially mounted on the main shaft thereof. The bottom end of the swing rod 17 is hinged with a driving disc 18, and the top end is hinged with a push-pull rod 19 horizontally arranged on the guide bracket 14.

In order to adapt to the up-and-down floating of the top end and the bottom end of the swing rod 17, the top end of the swing rod 17 is hinged in a sliding groove which is vertically arranged in the push-pull rod 19, and a pin shaft on the driving disk 18 is hinged in the sliding groove which is arranged at the bottom end of the swing rod 17. The driving disc 18 is driven by the driving motor 13 to rotate, and drives the swing rod 17 to swing back and forth, so as to push and pull the push-pull rod 19 in a reciprocating manner, and thus, the guide bracket 14 can slide in a reciprocating manner.

The tobacco leaves are flatly laid on the front end of the primary conveyer belt 11, are made to move from front to back along with the primary conveyer belt 11, and pass through the first dark box 31 in the moving process.

When the tobacco leaves are in the first dark box 31, the controller scans the upward surfaces of the tobacco leaves through the color identifier to measure the color depth of the upper surfaces of the tobacco leaves, so as to confirm whether the upward surfaces of the tobacco leaves are the front or the back at present. Because the color of the front side of the tobacco leaves is yellow and the color of the back side of the tobacco leaves is white, the color recognizer can adopt a chromatograph to determine the color of the upper surface of the tobacco leaves through the measured color chromatographic range, thereby determining the front side and the back side of the tobacco leaves.

When the controller detects that the tobacco leaves passing through are right side up, the controller controls the driving motor 13 to drive the guide bracket 14 to move into the moving space 15, so that the guide surface 14A at the rear side of the guide bracket 14 is aligned with the rear end of the primary conveying belt 11. The tobacco leaves leave the primary conveyor belt 11, fall onto a guide surface 14A on the rear side of the guide frame 14, and slide down onto the secondary conveyor belt 12 under the guidance thereof. Since the height of the guide surface 14A on the rear side is gradually reduced from front to back, after the tobacco leaves leave the primary conveyor belt 11, the back surface of the tobacco leaves firstly contacts the guide surface 14A on the rear side, and the tobacco leaves always keep the front surface upward in the process of sliding down to the secondary conveyor belt 12 along the guide surface 14A on the rear side. The secondary conveyor belt 12 can be continuously operated during the process that the tobacco leaves fall to the secondary conveyor belt 12 through the guide support 14.

When the controller detects that the tobacco leaves passing through are upside down, the controller controls the driving motor 13 to drive the guide bracket 14 to move out of the movement space 15, so that the guide surface 14A on the front side of the guide bracket 14 is aligned with the rear end of the primary conveying belt 11. Since the height of the front guide surface 14A gradually increases from front to back, after the tobacco leaves the primary conveyor belt 11, the back surface of the tobacco leaves first contacts the front guide surface 14A and slides down onto the secondary conveyor belt 12, so that the tobacco leaves falling onto the secondary conveyor belt 12 face up. After the tobacco leaves are guided by the guide bracket 14 to fall on the secondary conveyor belt 12 completely, the secondary conveyor belt 12 is started to move again, so that the tobacco leaves move forwards. In order to ensure that the tobacco leaves are turned over rapidly, the controller can know the time when the tobacco leaves fall onto the guide support 14 by matching with the speed of the primary conveyor belt, so that when the tobacco leaves are on the guide support 14, the driving motor 13 is controlled to move the guide support 14 backwards, and the speed of falling the tobacco leaves onto the secondary conveyor belt 12 is accelerated.

The sorting device 2 includes a first conveyor belt 21, a second conveyor belt 22, and a third conveyor belt 23.

The front end of the first conveyor belt 21 is connected to the rear end of the secondary conveyor belt 12, so that the tobacco leaves processed by the leaf turning device 1 with the front side facing upward are moved to the sorting device 2.

The second camera 32 and the third camera 33 are installed on the cabinet of the first conveyor 21.

The second camera bellows 32 is provided with a dense beam scanner therein, which is electrically connected to the controller.

A chromatograph is installed in the third dark box 33, and the chromatograph is electrically connected with the controller.

A first robot 51 is mounted on the fixed bracket 4 installed between the frames of the first and

second conveyor belts

21 and 22.

The second robot arm 52 is mounted on the fixed bracket 4 installed between the frames of the first conveyor belt 21 and the third conveyor belt 23.

The second camera box 32, the first robot 51, the third camera box 33 and the second robot 52 are sequentially arranged from front to back, and both the first robot 51 and the second robot 52 are electrically connected to a controller.

The tobacco leaves move from front to back along the first conveyor belt 21, first through the second dark box 32, and the controller scans the tobacco leaves passing through the second dark box 32 by means of the dense beam scanner. The dense light beam scanner emits dense light beams which can shield the tobacco leaves when the tobacco leaves pass through, so that the complete profile of the tobacco leaves can be obtained, and the controller can determine whether the tobacco leaves are damaged or not. The dense beam scanner obtains the outline of the scanned object, and determines whether the scanned object is damaged according to the outline.

When the controller recognizes a breakage of the tobacco passing through the second dark box 32, the controller controls the first robot 51 to grasp and feed the tobacco onto the second conveyor 22.

The undamaged tobacco leaves continue to travel back along the first conveyor 21 through the third dark box 33, and the controller scans the tobacco leaves passing through the third dark box 33 through the chromatograph. The controller measures the wavelength of the front color of the tobacco leaves and determines the grade of the tobacco leaves according to the set wavelength range. After the controller determines the grade of the tobacco leaves, if the current tobacco leaves meet the grade of the tobacco leaves set by the first conveyor belt 21, the second manipulator 52 is not controlled; if the current tobacco leaves do not conform to the tobacco leaf grade set by the first conveyor belt 21, the controller controls the second manipulator 52 to grab and transfer the tobacco leaves onto the third conveyor belt 23.

After the sorting device 2 sorts the tobacco leaves according to the above method, the damaged tobacco leaves are sent out by the second conveyer belt 22, and the complete tobacco leaves of two grades are respectively sent out by the first conveyer belt 21 and the third conveyer belt 23, so that the sorting of the tobacco leaves is realized.

The guide bracket 14 has an inverted V shape in order to more easily form guide surfaces on both front and rear sides.

In order to shorten the conveying distance of the manipulator on the sorting device 2, the first conveyor belt 21, the second conveyor belt 22 and the third conveyor belt 23 are arranged in parallel, the second conveyor belt 22 and the third conveyor belt 23 are respectively located on two sides of the first conveyor belt 21, and the conveyor belts are attached to each other.

The first manipulator 51 and the second manipulator 52 are both parallel robots and are hung on the fixed support 4, and the fixed support 4 can be fixed on the frame of the conveyor belt or on the ground independently.

In order to transfer the sorted tobacco leaves, the tobacco leaf classifying screen also has a transfer device 6.

The transfer device comprises a seven-axis robot 61 and a magazine 62.

The bins 62 are provided with three bins, which are respectively arranged below the rear ends of the first conveyor belt 21, the second conveyor belt 22 and the third conveyor belt 23, i.e. the tobacco leaves sent by each conveyor belt 21 can fall into the corresponding bin 62 and be stacked and discharged.

The box 62 is a comb-tooth box, and comprises a main rod 62A, two ends of the main rod 62A are vertically connected with box plates 62B, two sides of the main rod 62A are respectively provided with a plurality of ribs 62C arranged in a comb-tooth shape, and the outer sides of the ribs 62C are respectively bent upwards to form comb-tooth-shaped box walls on two sides of the box 62.

The gripper of the seven-axis robot 61 includes a coupling base 61A and a holding claw 61B.

Two supporting claws 61B are oppositely arranged, one end of each supporting claw is connected with the connecting seat 61A and is in a comb-tooth shape, and the tooth pitch is the same as that of the adjacent rib 62C.

The gripper of the seven-axis robot 61 moves below the hopper 62 and then vertically moves upward so that the gripper teeth of the gripper 61B pass through the spaces between the ribs 62C on the hopper 62, thereby entering the hopper 62, lifting the tobacco leaves in the hopper 62 while maintaining the stacked arrangement of the tobacco leaves.

In order to enable the gripper of the seven-axis robot 61 to move below the material box 62, a box plate 62B on the material box 62 is fixedly connected to a shell of the corresponding conveying belt, and a running space capable of enabling the supporting claw 61B to move in is arranged between a main rod 62A of the material box 62 and the ground.

Claims

1. A tobacco leaf grading screening machine is characterized by comprising a leaf turning device (1), a sorting device (2) and a controller;

the leaf turning device (1) comprises a primary conveyer belt (11), a secondary conveyer belt (12) and a driving motor (13);

a guide bracket (14) is slidably mounted on a shell of the secondary conveyor belt (12), and inclined guide surfaces (14A) are arranged on two sides of the guide bracket (14);

the rear end of the first-stage conveying belt (11) is positioned above the second-stage conveying belt (12), and a movement space (15) capable of enabling the guide support to enter is arranged between the first-stage conveying belt and the second-stage conveying belt;

a first dark box (31) capable of enabling materials to pass through is installed on a shell of the primary conveying belt (11), a color identifier is installed in the first dark box (31), and the color identifier is electrically connected with a controller;

the driving motor (13) is electrically connected with the controller, is connected with the guide bracket (14) through a mechanical transmission mechanism and is used for driving the guide bracket (14) to move in a reciprocating manner;

the sorting device (2) comprises a first conveyor belt (21), a second conveyor belt (22) and a third conveyor belt (23);

the front end of the first conveying belt (21) is connected with the rear end of the second-stage conveying belt (12);

a second dark box (32) and a third dark box (33) which can enable materials to pass through are arranged on the machine shell of the first conveying belt (21);

a dense light beam scanner is arranged in the second dark box (32), and the dense light beam scanner is electrically connected with the controller;

a chromatograph is arranged in the third dark box (33) and is electrically connected with the controller;

a first manipulator (51) is arranged on a fixed bracket (4) arranged between the racks of the first conveyor belt (21) and the second conveyor belt (22) and used for transferring the materials on the first conveyor belt (21) to the second conveyor belt (22);

a second manipulator (52) is arranged on a fixed support (4) arranged between the racks of the first conveyor belt (21) and the third conveyor belt (23) and used for transferring the materials on the first conveyor belt (21) to the third conveyor belt (23);

the second camera bellows (32), the first manipulator (51), the third camera bellows (33) and the second manipulator (52) are sequentially arranged from front to back, and the first manipulator (51) and the second manipulator (52) are electrically connected with the controller.

2. The tobacco leaf grading and screening machine according to claim 1, characterized in that the leaf turning device (1) further comprises a fixed seat (16) fixed on the ground, the fixed seat (16) is hinged with a swing rod (17);

the driving motor (13) is fixed on the ground, a driving disc (18) is coaxially arranged on a main shaft of the driving motor, one end of a swing rod (17) is hinged with the driving disc (18), and the other end of the swing rod is hinged on a push-pull rod (19) horizontally arranged on the guide support (14).

3. The tobacco leaf classifying and screening machine according to claim 1, wherein the guide bracket (14) is in the shape of an inverted V.

4. The tobacco leaf grading and screening machine according to claim 1, characterized in that the first conveyor belt (21), the second conveyor belt (22) and the third conveyor belt (23) are arranged side by side, and the second conveyor belt (22) and the third conveyor belt (23) are respectively located on both sides of the first conveyor belt (21).

5. The tobacco leaf grading and screening machine according to claim 1, characterized in that said first and second manipulators (51, 52) are both parallel robots.

6. The tobacco leaf classifying and screening machine according to claim 1, further comprising a transfer device (6) including a seven-axis robot (61) and a bin (62);

the three work bin boxes (62) are respectively arranged below the rear ends of the first conveying belt (21), the second conveying belt (22) and the third conveying belt (23);

the feed box (62) comprises a main rod (62A), box plates (62B) are vertically connected to two ends of the main rod (62A), a plurality of ribs (62C) arranged in a comb shape are arranged on two sides of the main rod (62A), and the outer sides of the ribs (62C) are bent upwards to form comb-shaped box walls on two sides of the feed box (62);

the gripper of the seven-axis robot (61) comprises a connecting seat (61A) and a supporting claw (61B);

the two supporting claws (61B) are arranged oppositely, one end of each supporting claw is connected with the connecting seat (61A) and is in a comb-tooth shape, and the tooth pitch is the same as the pitch of the adjacent ribs (62C).

7. The tobacco leaf grading and screening machine according to claim 6, characterized in that a box plate (62B) of the box (62) is fixedly connected to a housing of the corresponding conveyor belt, and a running space for moving the supporting claw (61B) is arranged between a main rod (62A) of the box (62) and the ground.