On-line measuring device for tobacco stem removal flow of cigarette making machine

Abstract

The application discloses a device for on-line measurement of the flow of stem removal of a cigarette making machine, which comprises a mounting box seat and stem collection modules, air separation modules, production guidance modules and stem recovery modules mounted on the mounting box seat, the stem collection modules comprise collection and separation cavities and separation guide covers and weighing guide covers mounted on the bottom of the collection and separation cavities, the air separation modules comprise suspension separation cavities for stem extraction and reuse, air suction components communicated with the suspension separation cavities and positioning components for mounting and fixing the air suction components, the production guidance modules comprise weighing devices, and the stem recovery modules comprise stem collection hoppers located below the weighing boxes and the suspension separation cavities. According to the production work flow, the device integrates multiple functions and realizes real-time monitoring, on-line measurement, stem containing wire recovery and reuse, and automatic production operation mode of production, monitoring, feedback and early warning.

Description

Technical Field

[0001] This invention relates to the field of cigarette processing, and more specifically to an online measuring device for the flow rate of cigarette stem removal in a cigarette rolling machine. Background Technology

[0002] In the cigarette production process, the points of tobacco loss that cannot be recycled on the production site are mainly concentrated in the feeding machine screening, dust removal, and fallen tobacco, as well as tobacco dust, fallen stems, and relatively small amounts of fallen tobacco and fumes in the rolling process. This part of tobacco dust is sent to the fan room through negative pressure suction and is processed by the pressing equipment. Among these, the most controllable and operable part is the management of fallen stems in the cigarette machine.

[0003] The cigarette industry has long been committed to improving stem separation systems to increase the stem content of cigarettes after rolling. Therefore, the amount of stems dropped by the feeding and forming machine is a key factor determining cigarette quality. However, research on the precise control of stem dropping is limited, with very few reports on such methods. Currently, the measurement of stem removal effectiveness relies heavily on manual labor, with some companies using instruments to assist, but manual intervention is still necessary. Correspondingly, online real-time measurement devices are scarce.

[0004] In recent years, to improve the intrinsic quality of cigarettes, reduce raw material consumption, enhance product quality, and optimize process stability indicators, major cigarette manufacturers have been continuously innovating and improving the stem-shred separation effect, precisely controlling the amount of fallen stems, reducing tobacco consumption per unit, and achieving breakthroughs in process quality. During cigarette production, the quality of incoming tobacco and the removal of stems are the most important factors affecting the physical properties of cigarettes. For cigarette rolling machines operating under stable conditions, the removal of stems can also serve as an important reference for the quality of incoming tobacco. In actual production, excessive stem removal intensity will result in a high content of stems with shreds, leading to increased tobacco loss and waste; insufficient stem removal may result in excessive stem content in the rolled cigarette, causing poor weight stability, large fluctuations in the SD weight of a single cigarette, and defects in cigarette surface punctures, among other process quality issues.

[0005] Under current equipment conditions, the distribution of stem removal volume is characterized by random occurrence, difficulty in prevention, and unpredictability. Therefore, strengthening the monitoring and measurement of stem removal volume in cigarette machines is not only to implement the current industry requirements for energy conservation and cost reduction, but also a crucial process controlling the amount of stem entering the cigarette forming stage, thus having a decisive impact on the stem content in cigarettes.

[0006] Real-time online monitoring of the stem removal flow rate during secondary stem separation, numerical adjustment through data collection and analysis, and the function of extracting and reusing tobacco from the stems are all crucial measures to ensure refined quality control of high-end products. This is of great urgency and necessity for improving product quality. Summary of the Invention

[0007] To overcome the above shortcomings, the present invention provides an online measuring device for the removal flow rate of cigarette stems and twigs in a cigarette rolling machine.

[0008] This invention, as an integrated device for online measurement of stem removal flow and online separation of stem strands, fundamentally improves many problems such as the low frequency of manual sampling and post-inspection, high randomness, large errors, difficulty in achieving real-time and online measurement, and weak guidance for controlling the stem separation effect.

[0009] The technical solution adopted by this invention to solve its technical problem is as follows:

[0010] The cigarette machine stem removal flow online measurement device includes a mounting base and a stem collection module, an air separation module, a production guidance module, and a stem recycling module installed thereon;

[0011] The tobacco stem collection module includes a collection and separation chamber and a separation guide cover and a weighing guide cover installed at its bottom. The collection and separation chamber is equipped with a flap with a separation working position and a weighing working position. The flap is linked to a flap movement mechanism. When the flap is in the separation working position, it guides the falling tobacco stems and shreds to the separation guide cover and then into the air separation module. When the flap is in the weighing working position, it guides the falling tobacco stems and shreds to the weighing guide cover and then into the production guidance module, and then resets to the separation working position.

[0012] The air separation module includes a suspension separation chamber for extracting and reusing stems, a suction assembly connected thereto, and a positioning assembly for its installation and fixation.

[0013] The production guidance module includes a weighing device, which includes a weighing support assembly and a connecting plate and a weighing execution mechanism mounted thereon. The weighing support assembly includes a weighing bracket and an adjusting plate mounted thereon. A weighing box with a symmetrical weighing guide cover is mounted on the connecting plate. The weighing execution mechanism includes a push plate with an initial working position and a weighing working position, which are used for pouring or storing tobacco stems and shreds in the weighing box, respectively.

[0014] The stem and stalk recovery module includes a stem and stalk collection hopper located below the weighing box and the suspension separation chamber.

[0015] As an improvement to the above technical solution, the flip-plate movement mechanism includes a cylinder I, a transmission mechanism, and a rotation mechanism;

[0016] The transmission mechanism includes a cylinder push rod I and a connecting rod connected by a pin, and the end of the connecting rod is connected to the rotating mechanism.

[0017] The rotating mechanism includes a flipping shaft and bearings and end caps disposed at both ends thereon, and the flip plate is fixed on the flipping shaft.

[0018] Optionally, the bearing may be a deep groove ball bearing.

[0019] Optionally, the flip plate is thicker at the bottom and thinner at the top to prevent tobacco stems and shreds from accumulating on the back of the flipping shaft during the separation or weighing of tobacco stems and shreds.

[0020] As an improvement to the above technical solution, a cylinder bracket is provided on the front side plate of the acquisition and separation chamber; the cylinder bracket includes a bent steel plate and an inclined plate that is vertically fixed to its surface and forms a 55° angle with the horizontal plane, and the cylinder I is installed on the inclined plate.

[0021] As an improvement to the above technical solution, the front and rear side plates of the acquisition and separation chamber are fixed to the lower end of the separation guide cover and the weighing guide cover by a connecting frame and a support plate.

[0022] As an improvement to the above technical solution, the front and rear side plates of the acquisition and separation chamber are provided with shaft holes for installing the flipping shaft, and the support plate is also provided with shaft holes at the corresponding positions.

[0023] As an improvement to the above technical solution, a guide plate is provided above the collection and separation chamber, through which tobacco stems and shreds enter.

[0024] As an improvement to the above technical solution, the suction assembly includes a suction pipe, a vacuum generator, and a pipe connected in sequence.

[0025] The positioning assembly includes positioning rods fixed to both sides of the suspension separation chamber and positioning round tubes fixed to the mounting base.

[0026] Optionally, the insertion end of the positioning rod is provided with a 30° chamfer to facilitate quick engagement or disengagement with the positioning tube.

[0027] As an improvement to the above technical solution, the suspended separation chamber separates tobacco stems and shreds through negative pressure air separation. The suspended separation chamber includes an inlet at the top, an air inlet, and a discharge port at the bottom. The inlet is directly below the separation guide cover, the air inlet is connected to the suction pipe, and an inclined baffle is provided above the discharge port inside the chamber.

[0028] As an improvement to the above technical solution, the weighing actuator is mounted on an adjusting plate, a weighing sensor is mounted on the front end of the adjusting plate, and the connecting plate and the weighing box are mounted sequentially above the weighing sensor.

[0029] As an improvement to the above technical solution, the bottom of the weighing box is open to form a pouring port, and the front ends of the connecting plate, adjusting plate and weighing bracket are provided with square holes at the same longitudinal position as the pouring port for the dropping of tobacco stems and shreds.

[0030] As an improvement to the above technical solution, the weighing actuator includes a cylinder II, a cylinder push rod II, and a push plate. The cylinder push rod II and the push plate are movably connected by a connecting pin. The push plate is installed in a groove located at the lower end of the connecting plate and can slide horizontally in a telescopic state within it, for closing and opening the square hole on the connecting plate.

[0031] Optionally, the lower ends of both sides of the connecting plate are fixed with L-shaped plates with openings facing inward, thereby forming grooves.

[0032] Optionally, weighing sensors are symmetrically installed on both sides of the adjusting plate.

[0033] Optionally, the adjusting plate can be adjusted in height, level, and fixed by positioning pins and fastening screws.

[0034] During weighing, the push plate extends under the action of cylinder II and closes the square hole on the connecting plate, storing the tobacco stems and shreds in the weighing box for automatic weighing; after weighing, the push plate retracts to the initial working position under the action of cylinder II, the square hole on the connecting plate opens, and the tobacco stems and shreds are poured out of the weighing box and fall into the stem collection hopper.

[0035] Optionally, the weighing sensor may be a parallel beam type weighing sensor.

[0036] Optionally, the weighing sensor is communicatively connected to a weight transmitter signal amplifier.

[0037] Optionally, cylinder I and cylinder II are selected as double-piston rod double-acting cylinders.

[0038] Optionally, cylinders I and II are controlled by five-position three-way bidirectional solenoid valves.

[0039] Cylinder I and Cylinder II are equipped with upper and lower limit magnetic rings to limit the opening and closing extreme positions of the cylinder piston rod. When the cylinder piston rod fails to reach the working position, the magnetic ring emits an alarm signal.

[0040] As an improvement to the above technical solution, the stalk collection hopper is connected to a centralized negative pressure recovery pipeline.

[0041] Optionally, the stem collection hopper is configured as a non-centrally symmetrical quadrangular pyramidal structure.

[0042] As an improvement to the above technical solution, the mounting base includes a mounting frame side plate, a mounting frame rear plate, a mounting frame bottom plate, and feet, wherein the mounting frame side plate is used for mounting the collection separation chamber and the suspension separation chamber, and the mounting frame rear plate is used for fixing the weighing bracket.

[0043] The beneficial effects of this invention are as follows:

[0044] This invention is a multi-functional device for real-time monitoring, online measurement, and recycling of filaments in stems, which can better realize an automated integrated production operation mode of production, monitoring, feedback, and early warning.

[0045] This device can switch working states as needed to separate and extract tobacco from the stem sticks or to measure the flow rate of the stem sticks in real time using gravity sensing. By perfectly combining various functions, it achieves the expected multi-functional integrated application effect, meets the requirements of the production process, provides standardized and scientific data support for cigarette production, reduces tobacco waste in the production process, ensures the stability of the single cigarette weight deviation SD index, and reduces quality problems such as cigarette puncture.

[0046] In this technical field, strengthening the monitoring and measurement of the stem removal flow rate in cigarette making machines is not only essential for implementing current industry requirements for energy conservation and cost reduction, but also a crucial control process that determines the amount of stems entering the tobacco-forming stage, thus having a decisive impact on the stem content in cigarettes. This invention enables real-time online monitoring of the stem removal flow rate during secondary stem separation. Through data acquisition and subsequent analysis, the stem removal value can be adjusted promptly. Simultaneously, it also enables the extraction, separation, and reuse of tobacco from the stems. This is a vital measure for ensuring refined quality control of high-end products, and is therefore extremely urgent and necessary for improving product quality.

[0047] Furthermore, the device of this invention is highly practical in its operation, ensuring the stability of the stem removal rate, reducing production costs, and improving the effective utilization rate of tobacco shreds, resulting in good application effects. In practical applications, it can effectively reduce the labor intensity of operators frequently measuring the amount of fallen stems, enhance the ability of operators and on-site process quality inspectors to control product quality, and has a certain influence on improving the pass rate of the intrinsic product quality after cigarette packaging. Attached Figure Description

[0048] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0049] Figures 1-2 This is a schematic diagram of the structure of the device of the present invention;

[0050] Figures 3-4 This is a schematic diagram of the acquisition and separation chamber of the stalk acquisition module;

[0051] Figure 5 This is a schematic diagram of the flipping motion mechanism of the tag acquisition module;

[0052] Figures 6-7 This is a schematic diagram of the working position structure of the flipping motion mechanism of the tag acquisition module;

[0053] Figure 8This is a schematic diagram of the structure of the air separation module;

[0054] Figures 9-10 This is a structural schematic diagram of the weighing device in the production guidance module;

[0055] Figure 11 This is a schematic diagram of the connecting plate and weighing box of the weighing device.

[0056] Figure 12 This is a schematic diagram of the structure of the tag recycling module.

[0057] Numbering on the map:

[0058] 1. Installation box base; 2. Stem tag collection module; 3. Air separation module; 4. Production guidance module; 5. Stem tag recycling module;

[0059] 20 Acquisition and separation chamber; 21 Separation guide cover; 22 Weighing guide cover; 23 Connecting frame; 24 Support plate; 25 Guide plate; 26 Cylinder bracket; 270 Flip plate; 271 Cylinder I; 272 Pin; 273 Cylinder push rod I; 274 Connecting rod; 275 Tilting shaft; 276 Bearing; 277 End cover;

[0060] 30 Suspension separation chamber; 31 Suction tube; 32 Vacuum generator; 33 Pipe; 34 Positioning rod; 35 Positioning round tube;

[0061] 40 Weighing box; 41 Weighing bracket; 42 Adjusting plate; 43 Connecting plate; 44 Push plate; 45 Weighing sensor; 460 Cylinder II; 461 Cylinder push rod II; 462 Connecting pin;

[0062] 51. Stalk collection hopper; 52. Centralized negative pressure recovery pipeline. Detailed Implementation

[0063] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0064] Figures 1-2 A schematic diagram of the overall structure of this device is shown.

[0065] The figure shows an online measurement device for the flow rate of cigarette stem removal in a cigarette machine. It mainly includes a mounting base 1 and four functional modules installed on it: stem collection module 2, air separation module 3, production guidance module 4, and stem recycling module 5.

[0066] The stem collection module 2 includes a collection and separation chamber 20 and a separation guide cover 21 and a weighing guide cover 22 installed at its bottom. The collection and separation chamber 20 is equipped with a flap 270 with a separation working position and a weighing working position. The flap 270 is linked to a flap movement mechanism that can switch its working position. When the flap 270 is in the separation working position, it guides the falling tobacco stems and shreds to the separation guide cover 21 and then into the air separation module 3. When the flap 270 is in the weighing working position, it guides the falling tobacco stems and shreds to the weighing guide cover 22 and into the production guidance module 4 for weighing, and then resets to the separation working position at a predetermined time.

[0067] Figures 3-4 The structure of the acquisition and separation chamber 20 is shown.

[0068] The collection and separation chamber 20 is open at the top and is equipped with a guide plate 25, through which tobacco stems and shreds enter to collect the tobacco stems and shreds that fall after secondary air separation.

[0069] The front and rear side plates of the collection and separation chamber 20 are fixed to the lower ends of the separation guide cover 21 and the weighing guide cover 22 by the connecting frame 23 and the support plate 24. The main function of the weighing guide cover 22 is to prevent tobacco shreds and stems from splashing when they fall into the weighing box 40. At the same time, the lower ends of the front and rear side plates of the collection and separation chamber 20 are provided with shaft holes for installing the flipping shaft 275, and the support plate 24 is also provided with shaft holes at the corresponding positions.

[0070] A cylinder bracket 26 is provided on the front side plate of the collection and separation chamber 20. The cylinder bracket 26 includes a bent steel plate and an inclined plate that is vertically fixed to its surface at a 55° angle to the horizontal plane. The cylinder I271 is mounted on the inclined plate.

[0071] Figure 5 The structure of the flipping motion mechanism is shown.

[0072] The flip-plate movement mechanism includes a cylinder I271, a transmission mechanism, and a rotation mechanism. The transmission mechanism includes a cylinder push rod I273 and a connecting rod 274 connected by a pin 272. The end of the connecting rod 274 is connected to the rotation mechanism. The rotation mechanism includes a flip shaft 275 and bearings 276 and end caps 277 disposed at both ends thereon. The flip plate 270 is fixed on the flip shaft 275. The flip shaft 275 and its bearings 276 are fixed to the side plate of the collection and separation chamber 20 through the end caps 277.

[0073] Optionally, the bearing 276 may be a deep groove ball bearing.

[0074] Optionally, the flip plate 270 is thicker at the bottom and thinner at the top to prevent tobacco stems and shreds from accumulating on the back of the flipping shaft 275 during the separation or weighing of tobacco stems and shreds.

[0075] Figures 6-7 The working position structure of the flipping motion mechanism is shown.

[0076] The flipping motion mechanism also has two working positions corresponding to the flip plate 270, namely Figure 6 The tobacco stem and tobacco shred separation working position shown is Figure 7 The image shows the weighing position for tobacco stems and shreds. The flipping mechanism can automatically flip to either the separation position or the weighing position as needed. The cylinder I271 is equipped with upper and lower limit magnetic rings, which limit the opening and closing extreme positions of the cylinder gate. When the gate fails to reach the working position, the magnetic ring emits an alarm signal.

[0077] Based on the flipping motion mechanism, when the flap 270 in the collection and separation chamber 20 is in the separation working position, the flap 270 guides the falling tobacco stems and shreds to the separation guide cover 21 and then into the suspension separation chamber 30 of the air separation device for the third separation of tobacco stems and shreds. When automatic weighing is performed at a timed interval, the cylinder I271 extends and drives the cylinder push rod I273 and connecting rod 274 to move the flap 270 to the tobacco stem and shred weighing working position. Under the guidance of the flap 270, the falling tobacco stems and shreds enter the weighing guide cover 22 and fall into the weighing box 40 for weighing. After weighing, the flap 270 returns to the separation working position under the action of the cylinder I271.

[0078] Figure 8 The structure of the air separation module 3 is shown.

[0079] The air separation module 3 includes a suspended separation chamber 30, a suction assembly connected to it, and a positioning assembly for its installation and fixation. The main function of this module is to achieve three-stage stem-fiber separation, enabling stem-fiber extraction and reuse. By improving the structure of the suspended separation chamber 30, the separation effect is improved and the stem-fiber blockage failure rate is reduced based on fluid mechanics.

[0080] The suction assembly includes a suction pipe 31, a vacuum generator 32, and a pipe 33 connected in sequence. The vacuum generator 32 provides a separation airflow for the suspension extraction of the stems after three separations.

[0081] The positioning assembly includes positioning rods 34 fixed to both sides of the suspension separation chamber 30 and positioning tubes 35 fixed to the mounting base 1. During connection, the positioning rods 34 are inserted into the positioning tubes 35 and fixed by butterfly lock nuts, which facilitates quick disassembly and installation. The butterfly lock nuts can also unlock the locking position of the separation chamber.

[0082] Optionally, the insertion end of the positioning rod 34 is provided with a 30° chamfer to facilitate quick engagement or disengagement with the positioning tube 35.

[0083] The suspended separation chamber 30 separates tobacco stems and shreds through negative pressure air separation. The suspended separation chamber 30 includes an inlet at the top, an air inlet, and a discharge port at the bottom. The inlet is directly below the separation guide cover 21. The air inlet is connected to the suction pipe 31. An inclined baffle is also provided above the discharge port in the chamber.

[0084] Figures 9-10 The structure of the weighing device in the production guidance module 4 is shown.

[0085] The main function of Production Guidance Module 4 is to realize automatic sensing and weighing of the amount of locomotive scrap within a unit of time, data collection, data storage and uploading to the production guidance center. Through timed automatic sensing and weighing, the system can promptly grasp, adjust and comprehensively analyze the locomotive scrap removal situation to guide production operations.

[0086] Production guidance module 4 mainly includes a weighing device, which includes a weighing support assembly and a connecting plate 43 mounted thereon, and a weighing execution mechanism. The weighing support assembly includes a weighing bracket 41 and an adjusting plate 42 mounted thereon. A weighing box 40 with a symmetrical weighing guide cover 22 is mounted on the connecting plate 43. The weighing execution mechanism includes a push plate 44 with an initial working position and a weighing working position, respectively used for pouring or storing tobacco stems and shreds in the weighing box 40, corresponding to... Figure 9 and Figure 10 The state shown.

[0087] Figure 10 When the weighing device is in the weighing working position, cylinder II460 extends to its maximum stroke, and push plate 44 reaches the working position below the weighing box 40. Weighing is then performed via load cell 45. After weighing, cylinder II460 and cylinder push rod II461 retract, driving connecting pin 462 and push plate 44, causing the tobacco shreds and stems inside the weighing box 40 to fall from below into the stem collection hopper 51 of the stem collection module 5. Cylinder II460 is equipped with upper and lower limit magnetic rings, which limit the opening and closing extreme positions of the cylinder gate. When the gate does not reach the working position, the magnetic ring emits an alarm signal.

[0088] The weighing actuator is mounted on the adjusting plate 42. A weighing sensor 45 is mounted on the front end of the adjusting plate 42. The connecting plate 43 and the weighing box 40 are mounted on the top of the weighing sensor 45 in sequence.

[0089] Optionally, weighing sensors 45 are symmetrically installed on both front ends of the adjusting plate 42.

[0090] Optionally, the adjusting plate 42 can be adjusted in height, level, and fixed by positioning pins and fastening screws.

[0091] The bottom of the weighing box 40 is open to form a pouring port. The front ends of the connecting plate 43, the adjusting plate 42 and the weighing bracket 41 are provided with square holes at the same longitudinal position as the pouring port for the dropping of tobacco stems and shreds.

[0092] The weighing actuator includes a cylinder II 460, a cylinder push rod II 461, and a push plate 44. The cylinder push rod II 461 and the push plate 44 are movably connected by a connecting pin 462. The push plate 44 is installed in a groove located at the lower end of a connecting plate 43 and can slide horizontally within it in a telescoping state, used for closing and opening the square hole on the connecting plate 43. To reduce frictional resistance and noise, the push plate 44 is made of surface-treated stainless steel.

[0093] Figure 11 The structure of the connecting plate 43 and the weighing box 40 is shown.

[0094] The lower ends of both sides of the connecting plate 43 are fixed with L-shaped plates with openings facing inward, thereby forming grooves.

[0095] During weighing, the push plate 44 extends under the action of cylinder II 460 and closes the square hole on the connecting plate 43, storing the tobacco stems and shreds in the weighing box 40 for automatic weighing; after weighing, the push plate 44 retracts to the initial working position under the action of cylinder II 460, the square hole on the connecting plate 43 opens, and the tobacco stems and shreds are poured out of the weighing box 40 and fall into the stem collection hopper 51.

[0096] Optionally, the weighing sensor 45 is a parallel beam type weighing sensor.

[0097] Optionally, the weighing sensor 45 is communicatively connected to a weight transmitter signal amplifier to convert the sensor voltage measurement value into the object weight value.

[0098] In this embodiment, cylinders I271 and I1460 are selected as double-piston rod double-acting cylinders.

[0099] Optionally, the cylinders I271 and I1460 are controlled by five-position three-way bidirectional solenoid valves.

[0100] Both cylinder I271 and cylinder I1460 are equipped with upper and lower limit magnetic rings.

[0101] Figure 12 The structure of the stem tag recycling module 5 is shown.

[0102] The stem recycling module 5 includes a stem collection hopper 51 located below the weighing box 40 and the suspension separation chamber 30. The stem collection hopper 51 is connected to a centralized negative pressure recovery pipe 52. Its main function is to discharge the stems after the three-stage air separation and the stems after weighing the fallen stems using the centralized negative pressure recovery pipe 52.

[0103] Optionally, the stem collection hopper 51 is configured as a non-centrally symmetrical quadrangular pyramid structure. At its connection with the centralized negative pressure recovery pipe 52, the height of the stem collection hopper 51 relative to the suspension separation chamber 30 is reduced by implementing a radius height reduction method on the centralized negative pressure recovery pipe 52, forming a flat front-end installation interface, thereby making the hopper quick and easy to install and disassemble.

[0104] Mounting base 1 is the reference component for the installation of parts in all functional modules of this embodiment. It includes mounting frame side plate, mounting frame rear plate, mounting frame bottom plate and foot. The mounting frame side plate is used for the installation of the collection separation chamber 20 and the suspension separation chamber 30, and the mounting frame rear plate is used for the fixation of the weighing bracket 41.

[0105] Triangular rib support plates are provided at the corner bends of the side plates, rear plates, and bottom plates of the mounting frame plate to improve the strength of the mounting frame plate.

[0106] It should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An online measuring device for the flow rate of cigarette stem rejection in a cigarette rolling machine, characterized in that: It includes a mounting base and the stem collection module, air separation module, production guidance module and stem recycling module installed on it; The tobacco stem collection module includes a collection and separation chamber and a separation guide cover and a weighing guide cover installed at its bottom. The collection and separation chamber is equipped with a flap with a separation working position and a weighing working position. The flap is linked to a flap movement mechanism. When the flap is in the separation working position, it guides the falling tobacco stems and shreds to the separation guide cover and then into the air separation module. When the flap is in the weighing working position, it guides the falling tobacco stems and shreds to the weighing guide cover and then into the production guidance module, and then resets to the separation working position. The air separation module includes a suspension separation chamber for extracting and reusing tobacco, a suction assembly connected thereto, and a positioning assembly for its installation and fixation. The production guidance module includes a weighing device, which includes a weighing support assembly and a connecting plate and a weighing execution mechanism mounted thereon. The weighing support assembly includes a weighing bracket and an adjusting plate mounted thereon. A weighing box with a symmetrical weighing guide cover is mounted on the connecting plate. The weighing execution mechanism includes a push plate with an initial working position and a weighing working position, which are used for pouring or storing tobacco stems and shreds in the weighing box, respectively. The stem and stalk recovery module includes a stem and stalk collection hopper located below the weighing box and the suspension separation chamber; The flapping mechanism includes cylinder I, a transmission mechanism, and a rotation mechanism; The transmission mechanism includes a cylinder push rod I and a connecting rod connected by a pin, and the end of the connecting rod is connected to the rotating mechanism. The rotating mechanism includes a flipping shaft and bearings and end caps disposed at both ends thereon, and the flip plate is fixed on the flipping shaft; A cylinder bracket is provided on the front side plate of the collection and separation chamber; The front and rear side plates of the collection and separation chamber fix the separation guide cover and the weighing guide cover at their lower ends through the connecting frame and the support plate; The front and rear side plates of the collection and separation chamber are provided with shaft holes for installing the flipping shaft, and the support plate is also provided with shaft holes at the corresponding positions. The suspended separation chamber separates tobacco stems and shreds through negative pressure air separation. The suspended separation chamber includes an inlet at the top, an air inlet, and a discharge outlet at the bottom. The inlet is directly below the separation guide cover, the air inlet is connected to the suction pipe, and an inclined baffle is provided above the discharge outlet inside the chamber. The weighing actuator is mounted on the adjusting plate, a weighing sensor is mounted on the front end of the adjusting plate, and the connecting plate and the weighing box are mounted in sequence above the weighing sensor; The bottom of the weighing box is open to form a pouring port. The front ends of the connecting plate, the adjusting plate and the weighing bracket are provided with square holes at the same longitudinal position as the pouring port for the tobacco stems and shreds to fall into the box. The weighing actuator includes cylinder II, cylinder push rod II and push plate. Cylinder push rod II and push plate are movably connected by a connecting pin. The push plate is installed in a groove at the lower end of the connecting plate and can slide horizontally in a telescopic state within it. The lower ends of both sides of the connecting plate are fixed with L-shaped plates with openings facing inward, thus forming grooves.

2. The online measuring device for cigarette stem rejection flow rate according to claim 1, characterized in that: The suction assembly includes a suction tube, a vacuum generator, and a pipe connected in sequence; The positioning assembly includes positioning rods fixed to both sides of the suspension separation chamber and positioning round tubes fixed to the mounting base.

3. The online measuring device for cigarette stem rejection flow rate according to claim 1, characterized in that: The hopper for collecting stems is connected to a centralized negative pressure recovery pipeline.

4. The online measuring device for cigarette stem removal flow rate according to claim 1, characterized in that: The mounting base includes a mounting frame side plate, a mounting frame rear plate, a mounting frame bottom plate, and feet, wherein the mounting frame side plate is used for mounting the collection separation chamber and the suspension separation chamber, and the mounting frame rear plate is used for fixing the weighing bracket.

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