Tobacco stem longitudinal cutting equipment for cigarettes

Abstract

The invention discloses tobacco stem longitudinal cutting equipment for cigarettes, which has the main design conception that the tobacco stem longitudinal cutting equipment for cigarettes is additionally arranged before a compression roller procedure of a cut stem production line, tobacco stems are cut in the longitudinal axis direction of the length, so that the rebound degree of the rolled tobacco stems is reduced, the rolled tobacco stems are kept in a sheet shape, and the tobacco stems are cut into tobacco shreds. The purpose of obtaining high-quality filamentous cut stems after the shredding process is achieved. The device specifically comprises a carding vibration groove, a cutting roller and a conveying roller, the carding vibration groove is used for evenly spreading tobacco stems and feeding the tobacco stems into an arc groove of the conveying roller in a longitudinal posture through longitudinal ripples, and the tobacco stems are cut into two halves in the longitudinal direction through the cutting roller matched with the conveying roller. The device is small in installed capacity and occupied area, has no adverse effect on the overall process layout, is suitable for cut stem production lines for obtaining cut stems in numerous cigarette enterprises, meanwhile, reduces the sectional area of tobacco stems, and can effectively reduce energy consumption of subsequent procedures.

Description

Technical Field

[0001] The invention relates to the field of cigarette manufacturing, and in particular to a device for longitudinally cutting tobacco stems for cigarettes. Background Art

[0002] Tobacco stems are the main vein part of the tobacco leaf, accounting for about 25% of the total mass of the tobacco leaf. They are rich in fiber tissue and have strong supporting capacity, making them ideal cigarette filling materials. Therefore, stem shreds made from tobacco stems are an important part of the cigarette formula, which has the characteristics of improving the taste of cigarettes, reducing the tar content of smoke and the consumption of tobacco raw materials. They play an important role in reducing costs and increasing efficiency, reducing tar and harm, and improving product quality of cigarettes.

[0003] In the existing commonly used stem shreds production process, the original stems are rolled once and cut into shreds once, but because the original stems contain rich fiber tissue and have good elasticity, they will rebound to varying degrees after rolling, resulting in a large difference in the shape of the cut stem shreds and the shape of the leaf shreds, and a high content of round stem shreds. The existence of round stem shreds seriously restricts the use of stem shreds in medium and thin cigarettes. In order to obtain leaf-like stem shreds, there is a method of obtaining shredded stem shreds by re-cutting the finished stem shreds, that is, cutting and screening the stem shreds containing more round shapes after cutting to obtain shredded stem shreds, but this method has a large crushing, a low yield of shredded stem shreds, and a serious waste of raw materials.

[0004] Therefore, the industry urgently needs to make technical improvements to the intermediate links of the above-mentioned process and involve them in the stem shred production line, cooperate with existing processes and equipment to produce shredded stems, overcome the problems of large fragments when producing shredded stems using the existing multiple cutting method, increase the output rate of tobacco stem raw materials, increase the scope of use and value of shredded stems, and reduce the energy consumption of subsequent process equipment, so as to achieve the purpose of reducing costs, increasing efficiency, reducing tar and reducing harm. Summary of the invention

[0005] In view of the above, the present invention aims to provide a device for longitudinally cutting tobacco stems for tobacco, so as to solve the problems that the shape of the cut stems produced by the stem cutting process is quite different from the shape of the leaf cuts, and the content of round cut stems is high.

[0006] The technical solution adopted by the present invention is as follows:

[0007] The present invention provides a device for longitudinally cutting tobacco stems for tobacco, comprising: a combing vibration groove as a groove bottom plate of a vibrating conveyor, a cutting roller and a conveying roller located at the rear end of the combing vibration groove, the cutting roller cooperates with the conveying roller to cut the tobacco stems output by the combing vibration groove into two halves along the longitudinal direction thereof;

[0008] The combing vibration trough comprises: a flat plate near the feeding end, on which a plurality of guide strips are arranged; and a corrugated plate near the discharging end, wherein the corrugated structure on the corrugated plate forms a plurality of troughs for accommodating tobacco stems, and the extension direction of each trough is consistent with the conveying direction; and a plurality of material-pickling plates are arranged at the wave crests of the corrugated structure, for assisting in picking up the tobacco stems entering the corrugated plate and dropping them into the troughs;

[0009] The cutting roller is provided with a plurality of cutters corresponding to the positions of the wave troughs and having the same number, the conveying roller is installed directly below the cutting roller, and the surface circumference of the conveying roller is provided with arc grooves corresponding to the positions of the wave troughs and cooperating with the cutters and having the same number.

[0010] In at least one possible implementation manner, the combing vibration groove is arranged horizontally, and the amplitude is smaller than the peak height of the corrugated structure of the corrugated plate.

[0011] In at least one possible implementation, the guide bar includes: a first guide bar and a second guide bar, the size of the first guide bar is larger than the size of the second guide bar, and the first guide bar is located in the middle of the flat plate and close to the feed end, and the second guide bar is located on both sides of the flat plate and close to the discharge end.

[0012] In at least one possible implementation manner, the middle portion of the material guide strip has a preset height, and the height gradually decreases from the middle portion to both ends of the material guide strip.

[0013] In at least one possible implementation manner, knife clamping blocks are arranged at intervals on the cutting roller, and the cutting knife is detachably installed in the knife clamping blocks.

[0014] In at least one possible implementation manner, the cutting roller further includes a first scraper installed at a lower side of the cutting roller, wherein the first scraper is sawtooth-shaped, and a tooth tip extends between two adjacent cutting blades.

[0015] In at least one possible implementation manner, the depth of the arc groove is less than the height of the wave crest of the corrugated plate; and the groove bottom width of the arc groove is greater than the thickness of the cutter.

[0016] In at least one possible implementation manner, the conveying roller further includes a second scraper installed at a lower side of the conveying roller, and the second scraper is an arc-shaped sawtooth bar.

[0017] In at least one possible implementation manner, a vertical position adjustment device is provided at the cutting roller to change the height position of the cutting roller.

[0018] In at least one possible implementation, a hopper is provided below the conveying roller for receiving and conveying the cut tobacco stems to the next processing step.

[0019] Compared with the prior art, the main design concept of the present invention is to add a longitudinal tobacco stem cutting device before the roller pressing process of the stem shred production line to cut the tobacco stem along the longitudinal axis of the length, thereby reducing the degree of rebound of the tobacco stem after rolling, maintaining the sheet shape after rolling, and achieving the purpose of obtaining high-quality shredded stems after the shredding process. Specifically, it includes a combing vibration groove, a cutting roller and a conveying roller. The combing vibration groove is used to evenly spread the tobacco stems and feed the tobacco stems into the arc groove of the conveying roller in a longitudinal posture through the longitudinal corrugations, and the cutting roller matched with the conveying roller cuts the tobacco stems into two halves along the longitudinal direction.

[0020] On the one hand, it solves the problem that the shape of the shredded stems produced by the existing shredded stem production line is quite different from the shape of the shredded leaves, and the content of round shredded stems is high, which seriously affects the application scope and use value of the shredded stems; on the other hand, it can effectively improve the flexibility of the formula combination required for reducing tar and reducing harm in medium and thin cigarettes, and reduce the waste of raw materials. The installed capacity and floor space of the present invention are both small, and there is no adverse effect on the overall process layout. It is suitable for the shredded stem production line for obtaining filamentous shredded stems in many cigarette companies. At the same time, it reduces the cross-sectional area of ​​the tobacco stems, which can effectively reduce the energy consumption of subsequent processes. Specifically:

[0021] (1) In the heating and humidification process, the purpose of heating is to increase the rate at which the tobacco stems absorb water and make the water content uniform. However, if the temperature is too high, pectin in the epidermal tissue of the tobacco stems will be easily precipitated, causing adhesion between the tobacco stems and between the tobacco stems and the shredder, which seriously affects the uniformity of the tobacco stem processing process. Since the equipment of the present invention cuts the tobacco stems longitudinally into two semi-cylinders, the exposed area of ​​the internal tissue is increased, the influence of the epidermal tissue on the absorption of water by the tobacco stems is reduced, and the rate at which the tobacco stems absorb water is increased. Therefore, the temperature of the tobacco stems at the outlet of the heating and humidification equipment can be appropriately reduced, and the storage time of the stems can be reduced. The moisture content after the stems are stored can also be uniform. Based on the improved design of the present invention, steam energy and stem storage time can be greatly saved, and the quality of shredded stems can be improved;

[0022] (2) In order to obtain shredded tobacco stems that are similar to leaf shreds, the tobacco stems entering the shredder should be in sheet form and the thickness of the tobacco stem sheets should be appropriate. Therefore, it is preferred to reduce the gap between the two rollers of the stem press. Since the tobacco stems processed by the device of the present invention are changed from the original whole cylinder to a semi-cylinder, the cross-sectional area is reduced and the resistance is reduced. Even if the gap between the rollers is reduced, the original equipment load can still be maintained and no adverse effect will be caused to the equipment.

[0023] (3) In the traditional process, the cross section of the tobacco stems entering the stem cutter is elliptical. In order to ensure that each tobacco stem is completely and firmly clamped and cut, a relatively large compaction force is required, otherwise a large amount of stems will be loose or sticky. However, too much compaction force will easily cause the organic matter contained in the tobacco stems to be pressed out, causing the cut stems to stick together and too much tobacco stain to adhere to the cutter, affecting the quality of the cut stems. The tobacco stems processed by the above-mentioned equipment of the present invention have changed into a sheet shape when they arrive at the stem cutter, making them easier to clamp and cut. After testing, it has been found that the compaction force parameter can be reduced while still ensuring the quality of the cut tobacco stems. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described below with reference to the accompanying drawings, in which:

[0025] Figure 1 A schematic front view of a device for longitudinally cutting tobacco stems provided in an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A-direction view in the figure;

[0027] Figure 3 A schematic top view of a device for longitudinally cutting tobacco stems provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0029] The present invention provides an embodiment of a device for longitudinally cutting tobacco stems for tobacco, specifically, as Figure 1 to Figure 3 As shown, it includes: a combing vibration trough 1 as the bottom plate of the trough body of the vibrating conveyor, a cutting roller 7 and a conveying roller 9 located at the rear end of the combing vibration trough 1, and the cutting roller 7 cooperates with the conveying roller 9 (the two can be driven to rotate by a transmission device, and the two rotate in opposite directions, and the rotation speed can also be adjusted steplessly, which is not limited or elaborated in the present invention), and is used to cut the tobacco stems output by the combing vibration trough 1 into two halves along the longitudinal direction.

[0030] Specifically, the combing vibration trough 1 includes: a flat plate 3 near the feed end (which can be understood as dividing the bottom plate of the trough into a flat plate section at the front), and a plurality of material guide strips are arranged on the flat plate 3; and a corrugated plate 5 near the discharge end (which can be understood as the corrugated section at the rear of the bottom plate of the trough), the corrugated structure on the corrugated plate 5 forms a plurality of troughs 12 for accommodating tobacco stems (longitudinally accommodating), and the extension direction of each trough 12 is consistent with the conveying direction (it can be understood that the width of the trough 12 is equivalent to the diameter of the tobacco stems, or slightly larger than the diameter of the tobacco stems); a plurality of material shifting plates 6 are also arranged at the crests of the corrugated structure, and the material shifting plates 6 can adjust the posture of the tobacco stems that enter the corrugated plate 5 laterally or obliquely, so that they fall longitudinally behind the trough 12.

[0031] When the tobacco stem material enters the flat plate 3 from the feed end of the conveyor, the tobacco stem is evenly spread in the cross-sectional direction of the bottom plate of the trough under the action of the guide strips. In order to improve the effect of the even spreading, it is preferred to include at least two types of guide strips, namely the first guide strip 2 and the second guide strip 4 shown in the figure. The size of the first guide strip is larger than that of the second guide strip 4. The first guide strip 2 is located in the middle of the flat plate 3 and relatively close to the feed end, and the second guide strip 4 is located on both sides of the flat plate 3 and relatively close to the discharge end. More preferably, the middle of the guide strip has a preset height, and the height gradually decreases from the middle to both ends.

[0032] Therefore, under the joint action of the original resonant frequency of the vibrating conveyor, the aforementioned material guide strips and the corrugated plate and its material stripping plate, all incoming tobacco stems can be longitudinally distributed in the trough 12 and move forward; based on this concept, it can be further pointed out that the trough body of the combing vibration trough 1 is horizontally arranged, and at the same time adopts a lower amplitude movement mode, and its amplitude is smaller than the peak height of the corrugated structure of the corrugated plate 5, so that the tobacco stems that fall into the trough will not be vibrated out during the vibration conveying process, thereby ensuring that the tobacco stems that longitudinally enter the trough of the corrugated plate 5 will only move in the trough to the discharge end in a longitudinal position.

[0033] Continuing from the above, the cutting roller 7 is provided with a plurality of cutters 14 corresponding to the positions of the troughs 12 and having the same number, the cutters 14 may be circular blades, and in actual operation, the cutting roller 7 is provided with a knife clamping block 15, the cutters 14 may be set on the cutting roller 7 through the knife clamping block 15, and rotate synchronously with the shaft; specifically, the knife clamping block 15 is a component which is arranged at intervals and is used for detachable installation of the cutters 14, and has a set position and thickness, which can ensure that the plane where the cutting edge of each cutter 14 is located is coplanar with the line formed by the lowest point of the aforementioned trough 12.

[0034] In addition, what can be optimized and expanded is that the cutting roller 7 also includes a first scraper 8 installed at the bottom of one side (as shown in the figure, it is installed at the lower right side of the cutting roller), and its function is to remove the tobacco stems adhered to the cutter. Specifically, the first scraper 8 is serrated, and the tooth tip extends between two adjacent cutters 14, so as to remove the tobacco stems and dirt adhered to the cutter, thereby ensuring that the cutter is sharp, and the position where the first scraper 8 extends into the cutter 14 and the inclination angle are both adjustable.

[0035] Regarding the conveying roller 9, it is installed directly below the cutting roller 7. Specifically, an arc groove 16 (arc groove) corresponding to the position of the trough 12 and cooperating with the cutter 14 and the same number is provided in the circumferential direction of the surface of the conveying roller 9. More preferably, the depth of the arc groove 16 is slightly smaller than the peak height of the corrugated plate 5.

[0036] Specifically, the width of the groove bottom 17 of the circular arc groove 16 is slightly larger than the thickness of the cutter 14, which is used to receive the tobacco stems fed longitudinally, and can provide a space for the cutting edge of the cutter 14 to fall after cutting the tobacco stems. In addition, as mentioned above, the conveying roller 9 can also include a second scraper 10 installed at the bottom of one side (as shown in the figure, installed at the lower right of the conveying roller). The second scraper 10 is a circular arc serrated bar, and its function is to remove the tobacco stems adhered to the circular arc groove 16 so that the next tobacco stem can smoothly enter the circular arc groove 16. Similarly, the position and angle of the second scraper 10 can also be adjusted, so as to achieve the effect of removing the tobacco stems from the groove bottom 17.

[0037] Two additional points can be explained: First, a vertical position adjustment device can be provided at the cutting roller 7 to adapt to tobacco stems of different varieties and grades. By changing the height of the cutting roller 7 through the vertical position adjustment device, it can be ensured that the cutting edge of the cutter 14 can reliably reach the bottom of the circular arc groove 16 of the conveying roller 9, thereby ensuring that the tobacco stems in the circular arc groove 16 can be smoothly and completely cut. Second, a hopper 11 can be provided below the conveying roller 9 to receive the tobacco stems cut into two halves after the tobacco stems are cut and taken out, and can be transported to the next processing step. For example, the hopper 11 can move downward after receiving the material according to a predetermined procedure.

[0038] Finally, in combination with the actual production scenario and the aforementioned embodiments, the working method of the present invention is explained as follows: in the stem shred processing link, when the tobacco stem raw material just enters the combing vibration trough, there will be tobacco stem accumulation, that is, there will be more tobacco stems in the middle of the plate and less on the two sides. Therefore, under the action of the aforementioned material guide strips, the more tobacco stems in the middle are diverted to both sides, so that the tobacco stems are evenly spread on the bottom plate of the vibration trough; then, when the tobacco stems are evenly and continuously fed into the corrugated plate, the tobacco stems advancing longitudinally will fall directly into the trough, and the tobacco stems advancing horizontally or obliquely will also fall into the trough after being guided by the material stripping plate, thereby ensuring that the tobacco stems transported into the rear conveying roller through the combing vibration trough are all transported longitudinally, and can then be smoothly cut longitudinally by the cutting roller.

[0039] Driven by the transmission device, the cutting roller and the conveying roller rotate relative to each other at the same speed. The tobacco stems are longitudinally fed into the arc groove of the conveying roller. Driven by inertia and the conveying roller, the tobacco stems move with the conveying roller, are brought to the cutting edge and cut longitudinally in the middle. Then, as the conveying roller rotates, the tobacco stems cut in half are thrown out and can fall into the hopper set below to enter the next process.

[0040] In addition, the upper and lower positions of the cutting rollers can be adjusted according to the type and grade of the tobacco stems. At the same time, if a cutter is found to be blunt during use, the cutter can be removed from the corresponding knife clamp block and replaced to ensure a good longitudinal cutting effect of the tobacco stems.

[0041] In summary, the main design concept of the present invention is to add a longitudinal tobacco stem cutting device before the roller pressing process of the stem shred production line, and cut the tobacco stems along the longitudinal axis of the length, so as to reduce the degree of rebound of the tobacco stems after rolling, keep the rolled sheet shape, and achieve the purpose of obtaining high-quality filamentous stem shreds after the shredding process. Specifically, it includes a combing vibration groove, a cutting roller and a conveying roller. The combing vibration groove is used to evenly spread the tobacco stems and feed the tobacco stems into the arc groove of the conveying roller in a longitudinal posture through the longitudinal corrugation, and the cutting roller matched with the conveying roller cuts the tobacco stems into two halves along the longitudinal direction. The present invention has a small installed capacity and a small footprint, and has no adverse effects on the overall process layout. It is suitable for the stem shred production lines for obtaining filamentous stem shreds in many cigarette companies. At the same time, it reduces the cross-sectional area of ​​the tobacco stems, which can effectively reduce the energy consumption of subsequent processes.

[0042] If the expressions expressing orientation are mentioned in the embodiments of the present invention, they are relative concepts based on the embodiments. In addition, "at least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can be represented by: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b, c can be single or multiple.

[0043] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings, but the above is only a preferred embodiment of the present invention. It should be noted that the technical features involved in the above embodiments and their preferred methods can be reasonably combined and matched into a variety of equivalent schemes by those skilled in the art without departing from or changing the design ideas and technical effects of the present invention; therefore, the present invention is not limited to the scope of implementation shown in the drawings, and all changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the specification and drawings, should be within the protection scope of the present invention.

Claims

1. A device for longitudinally cutting tobacco stems, characterized in that: include: A combing trough as the bottom plate of the trough body of the vibrating conveyor, a cutting roller and a conveying roller located at the rear end of the combing trough, wherein the cutting roller cooperates with the conveying roller to cut the tobacco stems outputted by the combing trough into two halves along the longitudinal direction thereof; The combing vibration trough comprises: a flat plate near the feeding end, on which a plurality of guide strips are arranged; and a corrugated plate near the discharging end, wherein the corrugated structure on the corrugated plate forms a plurality of troughs for accommodating tobacco stems, and the extension direction of each trough is consistent with the conveying direction; and a plurality of material-pickling plates are arranged at the wave crests of the corrugated structure, for assisting in picking up the tobacco stems entering the corrugated plate and dropping them into the troughs; The cutting roller is provided with a plurality of cutters corresponding to the positions of the wave troughs and having the same number, the conveying roller is installed directly below the cutting roller, and the surface circumference of the conveying roller is provided with arc grooves corresponding to the positions of the wave troughs and cooperating with the cutters and having the same number.

2. The device for longitudinally cutting tobacco stems according to claim 1, characterized in that: The combing vibration groove is arranged horizontally, and the amplitude is smaller than the peak height of the corrugated structure of the corrugated plate.

3. The device for longitudinally cutting tobacco stems according to claim 1, characterized in that: The material guide strips include: a first material guide strip and a second material guide strip, the size of the first material guide strip is larger than that of the second material guide strip, and the first material guide strip is located in the middle of the flat plate and close to the feed end, and the second material guide strip is located on both sides of the flat plate and close to the discharge end.

4. The device for longitudinally cutting tobacco stems according to claim 3, characterized in that: The middle part of the material guiding strip has a preset height, and the height gradually decreases from the middle part to both ends of the material guiding strip.

5. The device for longitudinally cutting tobacco stems according to claim 1, characterized in that: The cutting roller is provided with knife clamping blocks at intervals, and the cutting knife is detachably installed in the knife clamping blocks.

6. The device for longitudinally cutting tobacco stems according to claim 1, characterized in that: The cutting roller further comprises a first scraper installed at the lower side of the cutting roller, wherein the first scraper is sawtooth-shaped, and the tooth tip extends between two adjacent cutting knives.

7. The device for longitudinally cutting tobacco stems according to claim 1, characterized in that: The depth of the arc groove is less than the height of the wave crest of the corrugated plate; and the groove bottom width of the arc groove is greater than the thickness of the cutter.

8. The device for longitudinally cutting tobacco stems according to claim 1, characterized in that: The conveying roller further comprises a second scraper installed at a lower side of the conveying roller, wherein the second scraper is a circular arc-shaped sawtooth bar.

9. The device for longitudinally cutting tobacco stems according to any one of claims 1 to 8, characterized in that: An up and down position adjusting device is provided at the cutting roller to change the height position of the cutting roller.

10. The device for longitudinally cutting tobacco stems according to any one of claims 1 to 8, characterized in that: A hopper is provided below the conveying roller for receiving and conveying the cut tobacco stems to the next processing step.

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