A vibrating device for uniformly feeding tobacco shreds and its usage method

Abstract

This invention discloses a vibratory device for uniformly discharging tobacco shreds, comprising a feed trough wall panel, a glass cover on the front side of the feed trough wall panel, and a plurality of material level detection reflectors horizontally and evenly spaced on the surface of the glass cover. A vibration fixing seat is located below the material level detection reflectors, and a vibration output shaft is penetrated through the surface of the vibration fixing seat. One end of the vibration output shaft extends into the tobacco shred discharging area and is connected to a vibration plate. The vibration plate includes a connecting plate connected to the vibration output shaft and an arc-shaped groove surface connected to the connecting plate. The other end of the vibration output shaft is connected to a vibrator. This invention has a simple structure, reliable connection of each component, convenient assembly, and strong adaptability, and can adapt to the discharging requirements of tobacco shreds of different specifications. Vibration achieves uniform distribution of tobacco shreds, eliminating supply fluctuations caused by uneven or void tobacco shreds at the source, thereby improving the quality stability of subsequent products.

Description

Technical Field

[0001] This invention relates to the field of cigarette equipment technology, and in particular to a vibrating device for uniformly feeding tobacco shreds and its usage method. Background Technology

[0002] In the cigarette manufacturing process, the uniform feeding of tobacco is one of the core links to ensure the stable quality of cigarette products. Among them, the metering trough, as a key piece of equipment in the tobacco conveying path, directly affects the stability of subsequent processing steps due to the distribution of tobacco inside it. In the existing cigarette machine metering trough structure, there is usually a gap of about 20 mm between the front glass plate and the rear wall plate. This gap provides a channel for the falling and conveying of tobacco. After the tobacco is temporarily stored and shaped in the metering trough, it needs to fall accurately into the needle roller below. The needle roller drives the tobacco to continue to be conveyed forward, providing raw materials for the cigarette rolling process.

[0003] However, in actual production, as the tobacco shreds fall and are temporarily stored in the metering trough, factors such as the inherent stacking characteristics of the tobacco shreds and uneven gravity distribution can easily create localized voids within the trough, preventing the tobacco shreds from evenly covering the surface of the needle rollers. This uneven distribution of tobacco shreds directly affects the filling quality, leading to a series of product quality defects, such as excessive fluctuations in cigarette weight and the presence of empty cigarette heads. In severe cases, it can also reduce the production pass rate and increase production costs.

[0004] To address these issues, existing technologies often employ manual assistance or simple vibration mechanisms. However, manual processing is inefficient and cannot meet the demands of continuous and high-speed cigarette production. Furthermore, the processing results are highly subjective and inconsistent. Traditional vibration mechanisms suffer from several drawbacks due to their flawed design: First, the lack of effective vibration isolation allows vibration energy to easily transfer to the front glass plate, triggering high-frequency resonance or fatigue, leading to glass wear and breakage, and impacting equipment lifespan. Second, the poor sealing between the vibrating components and the feed trough allows tobacco dust to leak from the joints, polluting the production environment and accelerating equipment wear and tear. Third, the vibration output structure is not adapted to the tobacco shreds' trajectory, resulting in either insufficient energy transfer to effectively eliminate voids or excessive vibration amplitude causing tobacco shreds to splatter, making it difficult to achieve uniform tobacco distribution. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a tobacco uniform feeding vibration device with simple structure, good sealing performance, and stable vibration effect, which can solve the problems of poor adaptability of traditional vibration output structure, poor vibration effect, and easy to cause tobacco splatter or voids that cannot be eliminated. At the same time, this invention also provides a method of using the tobacco uniform feeding vibration device, which is applied to a tobacco uniform feeding vibration device.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A vibratory device for uniformly discharging tobacco shreds includes a trough wall panel. A glass cover is provided on the front side of the trough wall panel, forming a tobacco shred discharging area. Several level detection reflectors are horizontally and evenly spaced on the surface of the glass cover, and are fastened to the surface of the glass cover with screws. A vibration fixing seat is provided below the level detection reflectors, and is fixed to the outer surface of the glass cover by elastic vibration isolation pads. A vibration output shaft is provided through the surface of the vibration fixing seat. The vibration output shaft and the vibration fixing seat are sealed with a sealing ring. One end of the vibration output shaft extends into the tobacco shred discharging area and is connected to a vibrating plate. The vibrating plate includes a connecting plate connected to the vibration output shaft and an arc-shaped groove surface connected to the connecting plate. The inner surface of the arc-shaped groove surface is integrally formed with anti-slip micro-protrusions. The other end of the vibration output shaft is connected to a low-frequency vibrator. A needle roller is provided below the trough wall panel.

[0007] Furthermore, the feed trough wall panel is configured as a U-shaped structure, and a glass cover is fixedly installed on the front side of the feed trough wall panel. The glass cover and the inner wall of the U-shaped feed trough wall panel enclose a closed area for dropping tobacco.

[0008] Furthermore, the material level detection reflector is arranged on the outer surface of the glass cover, and the number of material level detection reflectors is preferably three, all of which are fastened to the surface of the glass cover by screws.

[0009] Furthermore, the vibration fixing seat is located in the middle of the glass cover directly below the material level detection reflector. The vibration fixing seat is installed on the outer surface of the glass cover by the cooperation of four limiting bolts and corresponding nuts. Multiple layers of elastic vibration isolation pads are sandwiched between the vibration fixing seat and the glass cover. Elastic vibration isolation pads are also sandwiched at the ends of the four limiting bolts that contact the glass cover. A through hole is opened in the glass cover corresponding to the position of the vibration fixing seat. The opening size of the through hole is larger than the outer diameter of the vibration output shaft. A wear-resistant sealing bushing is provided in the through hole and is sleeved on the outside of the vibration output shaft.

[0010] Furthermore, the elastic vibration isolation pad is preferably made of silicone rubber with a thickness of 2-5 mm.

[0011] Furthermore, the low-frequency vibrator is installed on the outside of the vibration mounting base, and the vibration frequency of the low-frequency vibrator is 10Hz~50Hz, and the amplitude is 0.5mm~3mm.

[0012] Furthermore, the end of the connecting plate away from the arc-shaped groove is fixedly connected to the vibration output shaft. The arc-shaped groove faces the inner side of the tobacco falling area. The anti-slip micro-protrusions on the inner surface of the arc-shaped groove are hemispherical with a diameter of 0.3mm to 1mm and are evenly distributed.

[0013] The present invention also provides a method for using a vibrating device for uniformly feeding tobacco shreds, wherein the method is applied to the aforementioned vibrating device for uniformly feeding tobacco shreds, and the specific steps include: Step S1: During operation, the tobacco shreds enter the tobacco dropping area enclosed by the feed trough wall and glass cover from the conveying mechanism set up upstream. In the initial state, the tobacco shreds may exhibit uneven distribution due to local accumulation and gaps caused by gravity, or even create void areas, which may affect the accuracy of subsequent tobacco feeding and metering. Step S2: At this time, the low-frequency vibrator is started. The vibration energy generated by the low-frequency vibrator is transmitted to the connecting plate through the vibration output shaft. The connecting plate drives the arc-shaped groove surface to vibrate synchronously. Since the arc-shaped groove surface is located in the tobacco dropping area and is in direct contact with the tobacco, it can disturb the tobacco accumulated around it during the vibration process, breaking the tobacco accumulation balance. At the same time, the structure of the arc-shaped groove surface can guide the tobacco to slide down the plate surface, so that the tobacco can be fully diffused and redistributed in the tobacco dropping area. During this process, the tobacco material level at different positions can be observed in real time through the material level detection reflector, and the tobacco distribution status can be fed back. This allows the operator to adjust the vibration frequency or amplitude of the low-frequency vibrator according to the detection results to ensure that the tobacco distribution reaches a uniform state. Step S3: The vibration fixing seat is installed on the outer surface of the glass cover, and the sealing structure of each connection part can effectively prevent the leakage of tobacco dust and prevent the tobacco dust from spreading with the vibration during the vibration process. After the tobacco is evenly distributed, it can enter the subsequent metering and tobacco feeding process to provide a stable supply of tobacco for subsequent production.

[0014] Compared with the prior art, the technical solution described in this invention has the following beneficial effects: 1. The present invention has a simple structure, reliable connection of each component, convenient assembly, and strong adaptability, and can be adapted to the feeding requirements of different specifications of tobacco shreds; by setting a low-frequency vibrator in conjunction with an arc-shaped vibrating plate, the tobacco shreds are gently disturbed, which not only effectively eliminates the problems of tobacco shred voids and uneven distribution, but also avoids tobacco shred splashing or glass fatigue caused by high-frequency vibration, thus eliminating the supply fluctuations caused by uneven tobacco shreds and voids from the source, thereby improving the quality stability of subsequent products; 2. This invention uses four limiting bolts and nuts to fix the vibration mounting base, significantly improving connection stability and preventing the vibration mounting base from loosening during vibration and affecting vibration transmission. Simultaneously, multiple layers of elastic vibration-damping pads made of silicone rubber are sandwiched between the vibration mounting base and the glass cover, and elastic vibration-damping pads are also provided at the contact ends of the limiting bolts and the glass cover. This effectively absorbs vibration energy, reducing the dynamic load transmitted to the glass cover to a safe level and preventing glass resonance and breakage. Furthermore, the sealing ring between the vibration output shaft and the vibration mounting base, and the wear-resistant sealing bushing inside the through-hole of the glass cover, together enhance the sealing effect, effectively preventing the leakage of smoke and dust, reducing equipment wear, lowering cleaning and maintenance costs, and improving the production environment. 3. In this invention, the connecting plate is fixedly connected to the vibration output shaft to ensure lossless transmission of vibration energy. The arc-shaped groove surface facing the inside of the tobacco falling area is designed to match the trajectory of the tobacco falling, guiding the tobacco to slide freely along the plate surface and preventing the tobacco from accumulating on the plate surface. The low-frequency vibration is transmitted to the arc-shaped groove surface through the vibration output shaft, producing a slow and rhythmic oscillation, which gently disturbs the tobacco and can quickly eliminate the problems of voids and uneven distribution of tobacco, effectively ensuring the uniformity of tobacco supply and providing stable support for subsequent metering and tobacco supply processes. Other beneficial effects of this invention will be further explained in the following specific embodiments. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the vibrating plate structure of the present invention; Figure 3 This is a side view of the internal structure of the present invention; The components include: 1. Tobacco drop area; 2. Feed trough wall panel; 3. Glass cover; 4. Needle roller; 5. Material level detection reflector; 6. Vibration mounting base; 7. Vibration output shaft; 8. Connecting plate; 9. Arc-shaped trough surface. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] like Figures 1 to 3 As shown, the present invention provides a vibrating device for uniformly feeding tobacco shreds. It includes a feed trough wall panel 2, with a glass cover 3 on the front side of the feed trough wall panel 2, so that the feed trough wall panel 2 and the glass cover 3 enclose a tobacco dropping area 1. Several material level detection reflectors 5 are horizontally and evenly distributed on the surface of the glass cover 3. The material level detection reflectors 5 are fastened to the surface of the glass cover 3 by screws. A vibration fixing seat 6 is provided below the material level detection reflectors 5. The vibration fixing seat 6 is fixed to the outer surface of the glass cover 3 by elastic vibration isolation pads. A vibration output shaft 7 is provided through the surface of the vibration fixing seat 6. The vibration output shaft 7 and the vibration fixing seat 6 are sealed with a sealing ring. One end of the vibration output shaft 7 extends into the tobacco dropping area 1 and is connected to a vibration plate. The vibration plate includes a connecting plate 8 connected to the vibration output shaft 7 and an arc-shaped groove surface 9 connected to the connecting plate 8. The inner surface of the arc-shaped groove surface 9 is integrally formed with anti-slip micro-protrusions. The other end of the vibration output shaft 7 is connected to a low-frequency vibrator. A needle roller 4 is provided below the feed trough wall panel 2.

[0018] In the embodiments of the present invention, the feed trough wall panel 2 is configured as a U-shaped structure, which serves as the main supporting component of the device and provides a basic framework for the containment and conveying of tobacco. A glass cover 3 is fixedly installed on the front side of the feed trough wall panel 2. The glass cover 3 and the inner wall of the U-shaped feed trough wall panel 2 enclose a closed tobacco dropping area 1. The tobacco dropping area 1 is the core space for the falling and temporary storage of tobacco. The glass cover 3 facilitates the operator to observe the distribution of tobacco inside and prevents tobacco from scattering and external impurities from mixing in.

[0019] In the embodiments described in this invention, the material level detection reflector 5 is arranged on the outer surface of the glass cover 3. Preferably, there are three material level detection reflectors 5, which can realize accurate observation of the material level of tobacco at different heights and positions in the tobacco dropping area 1. All three material level detection reflectors 5 are fastened to the surface of the glass cover 3 with screws. The connection method is firm and reliable, and it is easy to disassemble, maintain and replace in the future, so as to ensure the stability of the material level detection function.

[0020] In the embodiments described in this invention, the vibration mounting base 6 is located in the middle of the glass cover 3 directly below the material level detection reflector 5. The vibration mounting base 6 is installed on the outer surface of the glass cover 3 using four limiting bolts and corresponding nuts. The arrangement of the four limiting bolts improves the sealing and stability of the connection between the vibration mounting base 6 and the glass cover 3, while also sealing the soot and dust inside the metering trough, preventing leakage from the connection gaps, maintaining a clean environment around the device, and reducing dust accumulation and wear on the equipment. Furthermore, multiple layers of elastic vibration damping pads are sandwiched between the vibration mounting base 6 and the glass cover 3, and elastic vibration damping pads are also sandwiched at the ends of the four limiting bolts that contact the glass cover 3. Through the cooperation of the four limiting bolts and corresponding nuts, the vibration mounting base 6 is installed on the outer surface of the glass cover 3. When the 6 is installed on the surface of the glass cover 3, the elastic vibration damping pad will be in a slightly compressed state, thereby absorbing most of the vibration energy transmitted by the vibration mounting base 6, and only transmitting very low amplitude vibrations to the glass cover 3. In order to accommodate the installation of the vibration output shaft 7, the glass cover 3 is provided with a through hole corresponding to the position of the vibration mounting base 6. The size of the through hole is larger than the outer diameter of the vibration output shaft 7, so as to avoid the vibration output shaft 7 from colliding with the glass cover 3 during vibration. A wear-resistant sealing bushing is provided in the through hole. The wear-resistant sealing bushing is fitted on the outside of the vibration output shaft 7, which can allow the vibration output shaft 7 to vibrate within a certain range, and can also prevent the glass from being worn or broken due to long-term vibration of the vibration output shaft, and can also effectively prevent the risk of leakage of soot and dust.

[0021] In the embodiments described in this invention, the elastic vibration isolation pad is preferably made of silicone rubber with a thickness of 2-5 mm.

[0022] In the embodiments of the present invention, a sealing ring is used between the vibration output shaft 7 and the vibration fixing seat 6 to further enhance the sealing effect. The low-frequency vibrator is installed on the outside of the vibration fixing seat and provides a power source for the device. It can generate stable vibration energy and transmit it to the tobacco dropping area 1 through the vibration output shaft 7. The vibration frequency of the low-frequency vibrator is 10Hz~50Hz and the amplitude is 0.5mm~3mm. When the low-frequency vibration of the low-frequency vibrator acts on the glass cover 3, its energy is mainly concentrated in the low-frequency range and will not induce high-frequency resonance or high-frequency fatigue in the glass. With the help of the elastic vibration isolation pad, the dynamic load transmitted to the glass can be reduced to a safe level. At the same time, the low-frequency large-amplitude vibration has a better effect on disturbing and homogenizing loose materials such as tobacco, and can effectively eliminate voids and uneven accumulation.

[0023] In the embodiments of the present invention, the end of the connecting plate 8 away from the arc-shaped groove surface 9 is fixedly connected to the vibration output shaft 7 to ensure lossless transmission of vibration energy. The arc-shaped groove surface 9 faces the inner side of the tobacco dropping area 1, and its arc design can adapt to the sliding trajectory of the tobacco, allowing the tobacco to slide freely on the surface of the arc-shaped groove surface 9, avoiding the accumulation of tobacco on the plate surface. The anti-slip micro-protrusions integrally formed on the inner side of the arc-shaped groove surface 9 can further prevent tobacco from adhering and accumulating, ensuring smooth material dropping. The anti-slip micro-protrusions on the inner surface of the arc-shaped groove surface 9 are hemispherical, with a diameter of 0.3mm to 1mm, and are evenly distributed. Low-frequency vibration is transmitted to the arc-shaped groove surface 9 through the vibration output shaft 7, causing the arc-shaped groove surface 9 to oscillate slowly and rhythmically, thereby gently disturbing the tobacco in the tobacco dropping area 1, guiding it to slide evenly, and avoiding tobacco splashing or glass fatigue caused by high-frequency vibration.

[0024] The present invention also provides a method for using a vibrating device for uniformly feeding tobacco shreds, wherein the method is applied to the aforementioned vibrating device for uniformly feeding tobacco shreds, and the specific steps include: Step S1: During operation, the tobacco shreds enter the tobacco shreds dropping area 1, which is enclosed by the feed trough wall plate 2 and the glass cover 3, from the upstream conveying mechanism. In the initial state, the tobacco shreds may exhibit uneven distribution due to local accumulation and gaps caused by gravity, or even create void areas, which may affect the accuracy of subsequent tobacco shreds feeding and metering. Step S2: At this time, the low-frequency vibrator is started. The vibration energy generated by the low-frequency vibrator is transmitted to the connecting plate 8 through the vibration output shaft 7. The connecting plate 8 drives the arc-shaped groove surface 9 to vibrate synchronously. Since the arc-shaped groove surface 9 is located in the tobacco dropping area 1 and is in direct contact with the tobacco, it can disturb the tobacco piled up around it during the vibration process, breaking the tobacco pile balance. At the same time, the structure of the arc-shaped groove surface 9 can guide the tobacco to slide down the plate surface, so that the tobacco can be fully diffused and redistributed in the tobacco dropping area 1. During this process, the tobacco material level at different positions can be observed in real time through the material level detection reflector 5, and the tobacco distribution status can be fed back. This allows the operator to adjust the vibration frequency or amplitude of the low-frequency vibrator according to the detection results to ensure that the tobacco distribution is uniform. Step S3: The vibration fixing seat 6 is installed on the outer surface of the glass cover 3, and the sealing structure of each connection part can effectively block the leakage of tobacco dust and prevent the tobacco dust from spreading with the vibration during the vibration process. After the tobacco is evenly distributed, it can enter the subsequent metering and tobacco feeding process to provide a stable supply of tobacco for subsequent production.

[0025] Finally, 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. A vibrating device for uniformly feeding tobacco shreds, characterized in that: The device includes a feed trough wall panel, with a glass cover on the front side of the wall panel, forming a tobacco dropping area. Several level detection reflectors are evenly spaced horizontally on the surface of the glass cover, and are secured to the surface with screws. A vibration mounting base is located below the reflectors, and is fixed to the outer surface of the glass cover by elastic vibration damping pads. A vibration output shaft is threaded through the surface of the vibration mounting base, and a sealing ring is used to seal the vibration output shaft to the mounting base. One end of the vibration output shaft extends into the tobacco dropping area and is connected to a vibrating plate. The vibrating plate includes a connecting plate connected to the vibration output shaft and an arc-shaped groove connected to the connecting plate. The inner surface of the arc-shaped groove has integrally formed anti-slip micro-protrusions. The other end of the vibration output shaft is connected to a low-frequency vibrator. A needle roller is located below the feed trough wall panel.

2. The vibrating device for uniformly feeding tobacco shreds according to claim 1, characterized in that: The feed trough wall panel is configured as a U-shaped structure, and a glass cover is fixedly installed on the front side of the feed trough wall panel. The glass cover and the inner wall of the U-shaped feed trough wall panel enclose a closed area for dropping tobacco.

3. The tobacco shred uniform feeding vibration device according to claim 1, characterized in that: The material level detection reflector is arranged on the outer surface of the glass cover. Preferably, there are three material level detection reflectors, and all three material level detection reflectors are fastened to the surface of the glass cover with screws.

4. The tobacco shred uniform feeding vibration device according to claim 1, characterized in that: The vibration mounting base is located in the middle of the glass cover directly below the material level detection reflector. The vibration mounting base is installed on the outer surface of the glass cover by the cooperation of four limiting bolts and corresponding nuts. Multiple layers of elastic vibration isolation pads are sandwiched between the vibration mounting base and the glass cover. Elastic vibration isolation pads are also sandwiched at the ends of the four limiting bolts that contact the glass cover. A through hole is opened in the glass cover corresponding to the position of the vibration mounting base. The opening size of the through hole is larger than the outer diameter of the vibration output shaft. A wear-resistant sealing bushing is installed in the through hole and is sleeved on the outside of the vibration output shaft.

5. The tobacco shred uniform feeding vibration device according to claim 1, characterized in that: The elastic vibration isolation pad is preferably made of silicone rubber with a thickness of 2~5mm.

6. The tobacco shred uniform feeding vibration device according to claim 1, characterized in that: The low-frequency vibrator is installed on the outside of the vibration base. The vibration frequency of the low-frequency vibrator is 10Hz~50Hz and the amplitude is 0.5mm~3mm.

7. The vibrating device for uniformly feeding tobacco shreds according to claim 1, characterized in that: The end of the connecting plate away from the arc-shaped groove is fixedly connected to the vibration output shaft. The arc-shaped groove faces the inner side of the tobacco falling area. The anti-slip micro-protrusions on the inner surface of the arc-shaped groove are hemispherical with a diameter of 0.3mm to 1mm and are evenly distributed.

8. A method of using a vibrating device for uniformly feeding tobacco shreds, wherein the method is applied to the vibrating device for uniformly feeding tobacco shreds as described in any one of claims 1 to 7, characterized in that: The specific steps include: Step S1: During operation, the tobacco shreds enter the tobacco dropping area enclosed by the feed trough wall and glass cover from the conveying mechanism set up upstream. In the initial state, the tobacco shreds may exhibit uneven distribution due to local accumulation and gaps caused by gravity, or even create void areas, which may affect the accuracy of subsequent tobacco feeding and metering. Step S2: At this time, the low-frequency vibrator is started. The vibration energy generated by the low-frequency vibrator is transmitted to the connecting plate through the vibration output shaft. The connecting plate drives the arc-shaped groove surface to vibrate synchronously. Since the arc-shaped groove surface is located in the tobacco dropping area and is in direct contact with the tobacco, it can disturb the tobacco accumulated around it during the vibration process, breaking the tobacco accumulation balance. At the same time, the structure of the arc-shaped groove surface can guide the tobacco to slide down the plate surface, so that the tobacco can be fully diffused and redistributed in the tobacco dropping area. During this process, the tobacco material level at different positions can be observed in real time through the material level detection reflector, and the tobacco distribution status can be fed back. This allows the operator to adjust the vibration frequency or amplitude of the low-frequency vibrator according to the detection results to ensure that the tobacco distribution reaches a uniform state. Step S3: The vibration fixing seat is installed on the outer surface of the glass cover, and the sealing structure of each connection part can effectively prevent the leakage of tobacco dust and prevent the tobacco dust from spreading with the vibration during the vibration process. After the tobacco is evenly distributed, it can enter the subsequent metering and tobacco feeding process to provide a stable supply of tobacco for subsequent production.

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