Tobacco leaf stringer and control method

Abstract

The application discloses a tobacco leaf stem removing machine and a control method. The tobacco leaf stem removing machine comprises a stem removing unit, the stem removing unit comprises a transmission assembly, a cutting assembly and a driving assembly for driving the transmission assembly and the cutting assembly to move, the transmission assembly comprises an upper driving roller and a lower driving roller, the cutting assembly comprises a cutting roller, under the driving of the driving assembly, the upper driving roller and the lower driving roller rotate synchronously to realize the movement of the tobacco leaf along the transmission direction of the transmission assembly, and the cutting roller rotates synchronously with the upper and lower driving rollers and cuts the tobacco leaf stem in the transmission; the transmission assembly is arranged to realize the synchronous rotation of the lower driving roller, the upper driving roller and the cutting roller, at this time, the synchronous movement of the two groups of belts can be realized by installing the belt structure, thereby avoiding the damage of the tobacco leaf caused by the misplacement between the belts, the synchronous rotation of the cutting roller is matched with the movement speed of the tobacco leaf, and the tobacco leaf stem can be smoothly cut.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tobacco processing, in particular to a tobacco stem removing machine and a control method. BACKGROUND

[0002] In the processing of tobacco products, it is necessary to remove the stems from the tobacco leaves, especially the main stems. For example, in the processing of cigars, a cigar is composed of a wrapper, a binder and a filler. The wrapper is the outermost tobacco leaf of the cigar, and the binder is the tobacco leaf used to fix the position of the filler. The tobacco leaves used to make cigars need to be processed by removing the main stems in the middle of the tobacco leaves, and the whole tobacco leaf is divided into two parts after the main stems are removed.

[0003] To improve the efficiency of tobacco stem separation, the existing stem removing devices on the market achieve the transmission of tobacco leaves through the cooperation of rollers and conveying belts, and set cutting assemblies to cut and remove the stems of the tobacco leaves in the transmission process. The existing stem removing machines usually have fixed speed or a small speed range that can be achieved, and the adjustment mode is single, which cannot meet the use of workers with different proficiency levels, thereby affecting the stem removing efficiency and reducing the use efficiency of the stem removing machine. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a tobacco stem removing machine and a control method, which solves the problem of single adjustment mode of the existing stem removing device in the background art, which affects the stem removing efficiency.

[0005] To achieve the above-mentioned purpose, the present application proposes the following technology to achieve it:

[0006] A tobacco stem removing machine, comprising a stem removing unit, the stem removing unit comprising a transmission assembly, a cutting assembly, and a driving assembly for driving the transmission assembly and the cutting assembly to act, the transmission assembly comprising an upper driving roller and a lower driving roller, the cutting assembly comprising a cutting roller, under the driving of the driving assembly, the upper driving roller and the lower driving roller rotate synchronously to realize the movement of the tobacco leaves along the transmission direction of the transmission assembly, and the cutting roller rotates synchronously with the upper and lower driving rollers and cuts the stems of the tobacco leaves in the transmission.

[0007] Further, the cutting roller is arranged above the upper driving roller and the lower driving roller, the driving assembly comprises a first gear installed on the lower driving roller, a second gear installed on the upper driving roller and a third gear installed on the cutting roller, and the second gear and the third gear are respectively engaged with the first gear.

[0008] Further, the transmission assembly further comprises an upper driven roller and a lower driven roller, the upper driving roller and the upper driven roller are connected through a first belt transmission, the lower driving roller and the lower driven roller are connected through a second belt transmission, the first belt and the second belt are arranged in close contact to form a transmission channel to clamp and move the tobacco leaves through the cutting assembly for stem removal.

[0009] Further, the top of the lower driving roller is arranged at the same height as the top of the lower driven roller, the bottom of the upper driven roller is arranged in close contact with the top of the lower driven roller, the top of the lower driving roller is higher than the bottom of the upper driving roller, and the inner side of the closed loop formed by the second belt is provided with at least one support plate arranged in close contact with the second belt.

[0010] Further, the discharge end of the stem removal unit is provided with a discharge unit, the discharge unit comprises a conveyor belt, the detection unit is arranged on the side of the conveyor belt, the detection unit is signal connected with the control unit, and the control unit is signal connected with the discharge unit and the stem removal unit, the detection unit comprises a shooting assembly, and at least a part of the path of the tobacco leaves transported by the conveyor belt is located within the effective shooting range of the shooting assembly.

[0011] Further, the detection unit further comprises an analysis assembly and a display assembly, the shooting assembly is signal connected with the analysis assembly, the analysis assembly is signal connected with the display assembly, the shooting assembly shoots the image of the tobacco leaves and transmits it to the analysis assembly, the analysis assembly grades the tobacco leaves according to the image and transmits the result to the display assembly for display.

[0012] A control method of a tobacco leaf stem removal machine, applicable to any one of the tobacco leaf stem removal machines of claims 1-6, the method comprising:

[0013] After the device is powered on, preset working mode parameters are called for configuration;

[0014] A start signal input by a user is received, a first control instruction is sent to the driving assembly based on the start signal in the configured working mode, and the driving assembly is started and drives the transmission assembly to move under the control of the first control instruction;

[0015] The duration of the start signal is detected, and when the duration of the start signal makes the moving distance of the transmission assembly greater than or equal to a first preset distance, the driving assembly is controlled to stop after the transmission assembly moves a second preset distance.

[0016] Further, the preset working mode comprises a single mode, and the single mode parameters comprise the first preset distance and the second preset distance.

[0017] Further, the preset working mode includes a jog mode, when a preset jog mode parameter is configured, a starting signal input by a user is received, a second control instruction is sent to the driving assembly, and under the condition that the starting signal is continuously input, the driving assembly drives the transmission assembly to move under the control of the second control instruction; when the starting signal disappears under the jog mode, the driving assembly drives the transmission assembly to stop.

[0018] Further, when the single mode, when the duration of the starting signal makes the moving distance of the transmission assembly greater than or equal to the first preset distance, the speed of the driving assembly driving the transmission assembly to move is the second speed, and the second speed is greater than the first speed of the driving assembly driving the transmission assembly to move within the first preset distance.

[0019] Compared with the prior art, the comprehensive effects brought by the present application include:

[0020] (1) The transmission assembly is provided to realize the synchronous rotation of the lower driving roller, the upper driving roller and the cutting roller, at this time, the installation of the belt structure can achieve the synchronous movement of the two groups of belts, thereby avoiding the damage of the tobacco caused by the misalignment between the belts, and the synchronous rotation of the cutting roller matches the movement speed of the tobacco, facilitating the smooth cutting of the stem.

[0021] (2) The discharging unit and the detection unit are provided, the conveying belt receives the tobacco whose stems are removed by the stem removal unit and transports the tobacco, when passing through the detection unit, the shooting assembly shoots the tobacco whose stems are removed, transmits the image to the analysis assembly to grade the tobacco, and transmits the grading result to the display assembly, thereby facilitating the staff to collect and process the tobacco of different qualities.

[0022] (3) The working state of the stemmer is controlled by the staff input signal, in the single mode, by setting the first preset distance and the second preset distance, the stemmer can accelerate to drive the transmission assembly and the tobacco to remove the stems after moving the first preset distance, thereby improving the stem removal efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a whole schematic view of the tobacco stemmer according to the embodiment of the present application;

[0024] Figure 2 It is a schematic view of the internal structure of the stem removal unit according to the embodiment of the present application;

[0025] Figure 3 It is another angle schematic view of the internal structure of the stem removal unit according to the embodiment of the present application;

[0026] Figure 4 It is a side view schematic view of the internal structure of the stem removal unit according to the embodiment of the present application;

[0027] Figure 5Partial structure schematic diagram of the transmission assembly and the cluster assembling assembly of the embodiment of the present application;

[0028] Figure 6 Partial structure schematic diagram of the first belt and the second belt installation structure of the embodiment of the present application;

[0029] Figure 7 Partial structure schematic diagram of the tobacco leaf stripping machine detection unit installation of the embodiment of the present application.

[0030] Legend: 1, stripping unit; 2, discharge unit; 3, upper driving roller; 4, lower driving roller; 5, cutting roller; 6, cutting blade; 7, guide rail block; 8, upper tensioning roller; 9, upper driven roller; 10, lower driven roller; 11, support plate; 12, second support plate; 13, cluster discharging plate; 14, driving pulley; 15, driven pulley; 16, feeding end; 17, first gear; 18, lower tensioning roller; 19, detection unit. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0032] In this document, terms such as "first" and "second" and the like are used merely to distinguish one entity or operation from another, and do not necessarily require or imply these entities or operations have any such actual relationship or order. The terms "upper", "lower", "left", "right", "top", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0033] As shown in Figures 1 to 7 A tobacco leaf stripping machine, comprising a stripping unit 1, the stripping unit 1 comprising a transmission assembly, a cutting assembly, and a driving assembly for driving the transmission assembly and the cutting assembly to act, the transmission assembly comprising an upper driving roller 3 and a lower driving roller 4, the cutting assembly comprising a cutting roller 5, under the driving of the driving assembly, the upper driving roller 3 and the lower driving roller 4 rotate synchronously to realize the movement of the tobacco leaf along the transmission direction of the transmission assembly, and the cutting roller 5 rotates synchronously with the upper and lower driving rollers and cuts the leaf stem of the tobacco leaf in transmission.

[0034] The driving assembly drives the synchronous rotation of the lower driving roller, the upper driving roller and the cutting roller, at this time, the synchronous movement of the two groups of belts can be achieved by installing the belt structure, thereby avoiding the damage of the tobacco caused by the misalignment between the belts, the synchronous rotation of the cutting roller 5 matches the movement speed of the tobacco, and the leaf stems are cut off smoothly.

[0035] In the tobacco stemmer, the cutting roller 5 is arranged above the upper driving roller 3 and the lower driving roller 4, the transmission assembly includes a first gear 17 arranged on the lower driving roller 4, a second gear arranged on the upper driving roller 3 and a third gear arranged on the cutting roller 5, and the second gear and the third gear are engaged with the first gear 17 respectively.

[0036] The first gear is engaged with the second gear and the third gear, the first gear is driven to rotate, the second gear and the third gear move at equal linear speed, and then the synchronous rotation of the lower driving roller 4 connected with the first gear, the upper driving roller 3 connected with the second gear and the cutting roller 5 connected with the third gear is realized, at this time, the synchronous movement of the two groups of belts can be achieved by installing the belt structure, thereby avoiding the damage of the tobacco caused by the misalignment between the belts, the synchronous rotation of the cutting roller 5 matches the movement speed of the tobacco, and the leaf stems are cut off smoothly.

[0037] Preferably, a driven pulley 15 is fixed to the outside of the first gear, the driven pulley 15 is connected with a driving pulley 14 through a belt, and the driving pulley 14 is connected with the output end of the driving structure and drives the first gear to move through the belt.

[0038] In the tobacco stemmer, the transmission assembly further includes an upper driven roller 9 and a lower driven roller 10, the upper driving roller 3 and the upper driven roller 9 are connected through a first belt, the lower driving roller 4 and the lower driven roller 10 are connected through a second belt, the first belt and the second belt are arranged in close contact to form a tobacco conveying channel, so as to clamp and drive the tobacco to move through the cutting assembly for stem removal.

[0039] In the tobacco stemmer, the top of the lower driving roller 4 is arranged at the same height as the top of the lower driven roller 10, the bottom of the upper driven roller 9 is arranged in close contact with the top of the lower driven roller 10, the top of the lower driving roller 4 is higher than the bottom of the upper driving roller 3, and at least one support plate 11 is arranged on the inner side of the closed loop formed by the second belt.

[0040] By setting different heights between the transmission rollers, the transmission channel between the first belt and the second belt is bent downward at the initial part and then arranged horizontally, so that the tobacco leaves first adhere to the arc roller surface of the lower driving roller 4 after entering the transmission channel through the feeding end 16, and the whole tobacco leaves are stretched to facilitate the stripping operation of the cutting blade 6. The support plate 11 is arranged to provide support for the transmission channel and ensure that the tobacco leaves after stripping are transported in the horizontal direction, avoiding the loosening of the first belt and the second belt due to gravity, which causes the transmission channel to deform and affects the normal transportation of the tobacco leaves.

[0041] Preferably, the support plate 11 and the second support plate 12 are arranged to adapt to the conveying distance, and are arranged as two to facilitate separate installation and removal, reducing the assembly difficulty.

[0042] As shown in Figure 6 In the tobacco stripping machine of the embodiment, the transmission assembly further includes an upper tensioning roller 8 and a lower tensioning roller 18. The upper tensioning roller 8 is located inside the closed loop formed by the first belt, and the height of the top of the upper tensioning roller 8 is higher than the height of the top of the upper driving roller 3 and the upper driven roller 9 to tension the first belt. The lower tensioning roller 18 is located outside the closed loop formed by the second belt, and the height of the top of the lower tensioning roller 18 is higher than the height of the bottom of the lower driving roller 4 to tension the second belt.

[0043] The upper tensioning roller 8 and the lower tensioning roller 18 are arranged to tension the first belt and the second belt, which cooperates with the support plate 11 to avoid the deformation of the transmission channel between the first belt and the second belt and ensure the close contact effect.

[0044] In the tobacco stripping machine of the embodiment, the first belt and the second belt are each arranged with at least two, and the cutting assembly further includes a cutting blade 6 fixedly installed on the cutting roller 5. The at least two first belts and the at least two second belts are evenly distributed on both sides of the cutting blade 6.

[0045] The number of the first belts and the second belts is set to be even, and each belt is symmetrically distributed on both sides of the cutting blade 6. Before the tobacco leaves are stripped, this can avoid the tearing of the tobacco leaves and play a role in protecting the tobacco leaves.

[0046] Preferably, a fixed sharpening structure can be arranged on the side of the cutting blade 6. While the cutting blade 6 rotates for stripping operation, it rubs against the sharpening structure to achieve self-sharpening, thereby ensuring the sharpness of the cutting edge, avoiding tearing of the tobacco leaves during cutting and stripping, improving the stripping efficiency, and improving the quality of the tobacco leaves.

[0047] Preferably, the stem removing unit further comprises a stem collecting assembly, the stem collecting assembly comprises a guide block 7 arranged above the lower driving roller 4, the cutting blade 6 is provided with two cutting blades 6 arranged at intervals to form a cutting gap, the inside of the guide block 7 is provided with a guide rail, the starting end of the guide rail is communicated to the cutting gap to receive the leaf stems cut by the cutting blade 6, the bottom surface of the guide block 7 is provided with an arc curved surface structure surrounding the roller surface of the lower driving roller 4, the guide rail is arranged along the arc curved surface and penetrates through the guide block 7, a stem discharging plate 13 is arranged below the guide block 7, the stem discharging plate 13 is arranged at an angle and the angle is the same as the angle of the inclined surface part of the curved surface, the ending end of the guide rail is connected to the upper end of the stem discharging plate 13, and the cut leaf stems are transmitted to the stem discharging plate 13 to be discharged out of the stem machine.

[0048] The transmission assembly is arranged to clamp and convey the tobacco leaves, the cutting assembly is arranged to cut and remove the stems during the conveying process, so that the tobacco leaves are divided into leaf blades without main stems, and then the cut leaf stems are guided by the stem collecting assembly and discharged out of the stem machine. The guide block 7 and the guide rail inside are arranged to connect the cutting gap between the cutting blades 6, the leaf stems move synchronously with the tobacco leaves before being separated from the tobacco leaves, and part of the cut leaf stems enter the guide rail from between the cutting gaps during movement, until all the leaf stems are cut and enter the stem discharging plate 13 through the guide rail, and then are discharged out of the stem machine.

[0049] In the tobacco stem removing machine of the embodiment, the discharge end of the stem removing unit 1 is provided with a discharge unit 2, the discharge unit 2 comprises a conveying belt, the conveying belt is horizontally arranged and the height of the upper surface of the conveying belt is not higher than the discharge end, so as to convey the tobacco leaves with removed stems through the stem removing unit 1, the stem removing unit 1 is installed on a first rack, and the discharge unit 2 is installed on a second rack, preferably, the top of the conveying belt is flush with the top of the lower driven roller 10.

[0050] In the tobacco stem removing machine of the embodiment, the conveying belt is provided with a detection unit 19, the detection unit 19 is signal connected with a control unit, the control unit is signal connected with the discharge unit 2 and the stem removing unit 1 respectively, the detection unit 19 comprises a shooting assembly, at least part of the path of the tobacco leaves conveyed by the conveying belt is located in the effective shooting range of the shooting assembly; the detection unit 19 further comprises an analysis assembly and a display assembly, the shooting assembly is signal connected with the analysis assembly, and the analysis assembly is signal connected with the display assembly, the shooting assembly shoots the image of the tobacco leaves and transmits the image to the analysis assembly, the analysis assembly classifies the tobacco leaves according to the image and transmits the result to the display assembly for display.

[0051] The discharge unit 2 and the detection unit 19 are arranged, the conveying belt receives the tobacco leaves with removed stems through the stem removing unit 1 and conveys the tobacco leaves, when the tobacco leaves pass through the detection unit 19, the shooting assembly shoots the tobacco leaves with removed stems, transmits the image to the analysis assembly to classify the tobacco leaves, and transmits the classification result to the display assembly, so as to facilitate the staff to classify and collect and process the tobacco leaves with different qualities.

[0052] Preferably, in order to ensure that the leaves are as flat as possible during detection grading, prevent leaf wrinkles from causing the image captured by the shooting assembly to be smaller than the actual leaf size, and cause misjudgment, a flattening mechanism can be provided on the conveying belt in front of the detection unit 19 to flatten the leaves after de-stemming, allowing the leaves to expand and improve grading accuracy and avoid waste. In practical applications, the leaves can be divided into two sizes according to their length: the total length of the leaves is used as the criterion, with 45 cm as the boundary. Leaves longer than 45 cm are classified as large leaves, and leaves shorter than 45 cm are classified as small leaves. Further preferably, both large and small leaves are subjected to three-level judgment of the jacket, cover, and core according to the grading judgment content. The grading judgment content mainly includes: a. hole recognition, b. disease and insect spot recognition, c. leaf damage recognition, d. leaf vein direction and position, and e. leaf surface water spot recognition. Through the above judgment conditions, the classification of the leaves can be further refined, and the grading efficiency can be improved.

[0053] In the tobacco de-stemming machine of the present embodiment, an inlet end 16 is provided between the upper driving roller 3 and the lower driving roller 4. The tobacco leaves enter the leaf conveying channel between the first belt and the second belt through the inlet end, are de-stemmed by the cutting blade 6, pass through the support plate 11 along the leaf conveying channel, enter the discharge unit 2 from the discharge end between the upper driven roller 9 and the lower driven roller 10, and are discharged and detected by the detection unit 19.

[0054] Preferably, a sorting unit can also be provided at the end of the discharge unit 2. The sorting unit automatically classifies and selects the tobacco leaves on the conveying belt according to the detection results of the detection unit, further reducing the labor of the workers.

[0055] A control method for a tobacco de-stemming machine, suitable for the above-mentioned tobacco de-stemming machine, the method comprising:

[0056] After the device is powered on, preset working mode parameters are called for configuration;

[0057] A start signal input by a user is received, and a first control instruction is sent to the driving assembly based on the start signal in the configured working mode, and the driving assembly is started and drives the transmission assembly to move under the control of the first control instruction;

[0058] The duration of the start signal is detected, and when the duration of the start signal causes the transmission assembly to move a distance greater than or equal to a first preset distance, the driving assembly is controlled to stop after the transmission assembly moves a second preset distance.

[0059] Preferably, the driving assembly is signal-connected with a foot pedal unit outside the de-stemming machine. The worker inputs the start signal by stepping on the foot pedal in the foot pedal unit. The above-mentioned setting facilitates the worker to sit at the input end of the de-stemming machine to deliver the tobacco leaves, and the foot pedal control facilitates the control without affecting the action of delivering the tobacco leaves in the worker's hands.

[0060] The preset working mode includes a single mode, and the single mode parameter includes a first preset distance and a second preset distance.

[0061] Preferably, in the single mode, the stem removing machine has a production counting function: counting once for each second preset distance, regarding it as completing a stem removing operation of one piece of tobacco leaf, setting a planned number, displaying the production number of each shift, and alarming when the planned number is reached.

[0062] Specifically, the first preset distance is a twice acceleration length, and the second preset distance is a stem removing length. The stem removing length of the stem removing machine can be set, and the stem removing machine stops when the set length is reached. The stem removing length is set according to the specific length of the batch of tobacco leaves, so that each piece of tobacco leaf can be completely stripped of stems. In the single mode, when the staff continuously steps on the foot pedal, the driving assembly drives the transmission assembly to move and stop after completing the second preset distance.

[0063] When the staff is experienced and skilled in delivering tobacco leaves into the stem removing machine, the twice acceleration length can be set to be less than the stem removing length after it is determined that the tobacco leaves can move along the preset path in the stem removing machine after entering the stem removing machine. The staff steps on the foot pedal to start the driving assembly, and delivers the tobacco leaves at the same time. When the length of the tobacco leaves entering the stem removing machine is the twice acceleration length, the driving assembly automatically accelerates to drive the transmission assembly to move, so that the remaining part of the tobacco leaves can be transported into the stem removing machine more quickly. At this time, the staff can release the foot pedal, thereby reducing the time for a single piece of tobacco leaf to enter the stem removing machine and complete the stem removing, avoiding the staff's foot fatigue caused by continuously stepping on the foot pedal, improving the stem removing efficiency, and reducing the burden on the staff.

[0064] When the staff is less experienced, the staff needs to manually deliver the tobacco leaves into the stem removing machine from the beginning to the end. The twice acceleration length is set to be greater than the stem removing length. At this time, the first preset distance is greater than the second preset distance, that is, the staff continuously steps on the foot pedal until the driving assembly drives the transmission assembly to move and stop after completing the stem removing length. The distance required by the twice acceleration length cannot be reached. At this time, the speed of the driving assembly is completely controlled by the staff during the completion of the stem removing length, so that the staff who is not skilled can deliver the tobacco leaves according to their own operation habits, avoiding the speed from being out of control, causing the tobacco leaves to be delivered and transported to be skewed, and affecting the normal stem removing operation.

[0065] When the single mode is started, if the duration of the start signal makes the moving distance of the transmission assembly greater than or equal to the first preset distance, the speed of the driving assembly driving the transmission assembly to move is a second speed, which is greater than the first speed of the driving assembly driving the transmission assembly to move within the first preset distance. The second speed can be set, and the first speed is controlled by the staff by stepping on the foot pedal.

[0066] In the control method of the embodiment, the preset working mode includes a jog mode, when the preset jog mode parameter is configured, a starting signal input by a user is received, a second control instruction is sent to the driving assembly, and the driving assembly drives the transmission assembly to move under the control of the second control instruction when the starting signal is continuously input; when the starting signal disappears in the jog mode, the driving assembly drives the transmission assembly to stop.

[0067] In the jog mode, the staff can start the driving assembly to drive the transmission assembly to move by treading the foot pedal, the driving assembly is started and stopped simultaneously with the action of treading the foot pedal, in this mode, the staff's foot is prone to fatigue, and the staff has a heavy burden, and the staff can select according to the own demand.

[0068] Preferably, the stem removing machine system adopts PLC control and adopts modular design, and is automatically controlled from the beginning of the leaf to the leaf, so that the leaf stem is automatically separated, the leaf blade is automatically conveyed to the conveying belt assembly of the discharging unit 2, the stem removing length can be set to be automatically stopped, the speed of the stem removing machine is freely controlled according to the skill level of the worker, and the phenomenon of uneven leaf edges and waste caused by manual stem tearing is eliminated.

[0069] The control mode of the conveying line of the discharging unit 2 is divided into single machine control and online control with the stem removing machine, and whether the leaf stacking phenomenon exists when the tobacco leaf is removed from the stem removing unit 1 and enters the discharging unit 2 is controlled to start and stop synchronously and at the same speed or at intervals with the stem removing unit 1.

[0070] Preferably, the equipment parameters further include: 1, low, medium and high speed numerators and speed denominators, the low, medium and high speed numerators are speed multiples, the speed denominators are 1, the greater the number of numerators, the faster the speed; 2, length numerators and length denominators, the above parameters cannot be set, and are calculated according to the servo motor and the hardware speed ratio, if the parameters are changed, the set single stem removing length and the actual stem removing length will be inconsistent; 3, camera signal time, that is, the output signal time after the single stem removing is completed, the time determines the shooting time length of the shooting assembly on the tobacco leaf; 4, front and rear starting phase difference time, that is, the starting delay time of the driving assembly of the stem removing unit 1 and the conveying belt of the discharging unit 2 when the discharging unit 2 is online with the stem removing unit 1.

[0071] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "rotating" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited, the above-mentioned terms in the present application can be understood according to the specific meaning of the above-mentioned terms in the present application by the person skilled in the art according to the specific situation.

[0072] While embodiments of the application have been shown and described in detail, it will be understood by those skilled in the art that various modifications, changes, substitutions and alterations can be made therein without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A tobacco leaf stringer, characterized by, The de-stemming unit comprises a conveying assembly, a cutting assembly, and a driving assembly for driving the conveying assembly and the cutting assembly to move, the conveying assembly comprises an upper driving roller and a lower driving roller, and the cutting assembly comprises a cutting roller, under the driving of the driving assembly, the upper driving roller and the lower driving roller rotate synchronously to move the tobacco leaves along the conveying direction of the conveying assembly, and the cutting roller rotates synchronously with the upper driving roller and the lower driving roller and cuts the stems of the tobacco leaves in the conveying process. The cutting roller is arranged above the upper driving roller and the lower driving roller, the driving assembly comprises a first gear installed on the lower driving roller, a second gear installed on the upper driving roller, and a third gear installed on the cutting roller, and the second gear and the third gear are engaged with the first gear respectively. The conveying assembly further comprises an upper driven roller and a lower driven roller, the upper driving roller and the upper driven roller are connected by a first belt transmission, the lower driving roller and the lower driven roller are connected by a second belt transmission, the first belt and the second belt are arranged in close contact to form a tobacco conveying channel to hold and move the tobacco leaves through the cutting assembly for de-stemming. The top of the lower driving roller is arranged at the same height as the top of the lower driven roller, the bottom of the upper driven roller is arranged in close contact with the top of the lower driven roller, the top of the lower driving roller is higher than the bottom of the upper driving roller, and the inner side of the closed loop formed by the second belt is provided with at least one support plate arranged in close contact with the second belt. The discharge end of the de-stemming unit is provided with a discharge unit, the discharge unit comprises a conveying belt, the conveying belt is provided with a detection unit on the side, the detection unit is signal connected with a control unit, the control unit is signal connected with the discharge unit and the de-stemming unit respectively, and the detection unit comprises a shooting assembly. The de-stemming unit further comprises a stem collecting assembly, the stem collecting assembly comprises a guide rail block arranged above the lower driving roller, the cutting assembly further comprises cutting blades fixedly installed on the cutting roller, the cutting blades are arranged in two, the two cutting blades are arranged in close contact to form a cutting gap, the guide rail block is internally provided with a guide rail, the starting end of the guide rail is communicated to the cutting gap to receive the stems cut by the cutting blades, the bottom surface of the guide rail block is arranged as an arc curved surface structure surrounding the roller surface of the lower driving roller, the guide rail is arranged along the arc curved surface and penetrates through the guide rail block, the lower side of the guide rail block is provided with a stem discharging plate, the stem discharging plate is arranged in an inclined manner, the inclination angle of the stem discharging plate is the same as that of the inclined surface part of the curved surface, the terminal end of the guide rail is connected with the upper end of the stem discharging plate, and the cut stems are transmitted to the stem discharging plate to be discharged from the de-stemming machine. The working state of the de-stemming machine is controlled by inputting signals by the staff, in the single mode, by setting a first preset distance and a second preset distance, after the conveying assembly moves the first preset distance, the de-stemming machine accelerates to drive the conveying assembly and the tobacco leaves to perform de-stemming operation, thereby improving the de-stemming efficiency.

2. A tobacco leaf stringer according to claim 1, characterised in that, The detection unit further comprises an analysis component and a display component, the shooting component is signal connected with the analysis component, the analysis component is signal connected with the display component, the shooting component shoots the tobacco leaf image and transmits to the analysis component, the analysis component grades the tobacco leaf according to the image, and the result is transmitted to the display component for display.

3. A control method for a tobacco leaf destemmer, suitable for use in a tobacco leaf destemmer as claimed in any one of claims 1-2, characterized in that, The method comprises: After the device is powered on, preset working mode parameters are called for configuration; Receive the user input start signal, in the configured working mode, based on the start signal to the drive component sends first control instruction, drive component under the control of the first control instruction starts and drives the transmission component to move; Detect the duration of the start signal, when the duration of the start signal makes the moving distance of the transmission component greater than or equal to the first preset distance, control the drive component to drive the transmission component to move to the second preset distance and then stop.

4. The control method of a tobacco leaf stringer according to claim 3, characterized in that, The preset working mode includes single mode, and the single mode parameters include the first preset distance and the second preset distance.

5. The control method of a tobacco leaf stringer according to claim 3, characterized in that, The preset working mode includes point mode, when the preset point mode parameters are configured, receive the user input start signal, send the second control instruction to the drive component, and drive the transmission component to move under the control of the second control instruction when the start signal is continuously input; When the start signal disappears in the point mode, the drive component drives the transmission component to stop.

6. The control method of a tobacco leaf stringer according to claim 3, wherein When the single mode, when the duration of the start signal makes the moving distance of the transmission component greater than or equal to the first preset distance, the speed of the drive component driving the transmission component to move is the second speed, and the second speed is greater than the first speed of the drive component driving the transmission component to move within the first preset distance.

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