Processing device for producing new tobacco cut filler according to a set length

Abstract

The present invention provides a processing device for producing new tobacco cut tobacco according to a set length, comprising: a feeding device, a screening device, a cutting machine, and a frame; wherein, the feeding device is located at the head of the screening device, the cutting machine is located at the tail of the screening device, the screening device is located below the feeding device, and the feeding device, the screening device and the cutting machine are fixed to the frame; a plurality of toothed rollers of the cutting machine are respectively axially connected and fixed to the frame, and the axial projections of the plurality of toothed rollers form a quadrilateral structure that contracts along the horizontal radial direction; there is a gap between the upper and lower chain drives of the cutting machine; the inner side of the cutting knife of the cutting machine is close to the tail of the upper chain drive, and the cutting edge of the cutting knife is fixedly installed downward on the cutting knife holder; the cutting knife holder is connected to the output end of the chain drive stepping motor through a crank-link mechanism; the stepping motor is signal-connected to the control cabinet, and the blanking chute of the cutting machine is located outside the cutting knife. This device processes new tobacco cut tobacco according to the set standard length, improving the rolling quality and sensory quality of new tobacco products.

Description

Technical Field

[0001] The present invention relates to a new tobacco leaf processing technology, and particularly to a device for processing new tobacco cut tobacco according to a set standard length. Background Art

[0002] In recent years, new tobacco products have become a new growth point in the international tobacco industry, and several major international tobacco companies have successively launched new tobacco products. As emerging tobacco products, currently, traditional cigarette processing methods are usually adopted in the leaf processing technology.

[0003] As Figure 1 shown, an existing tobacco cut tobacco processing device includes: a feeding device, a screening device 2, and a frame 4; the feeding device and the screening device are fixed to the frame 4, and the screening device is located below the feeding device.

[0004] As Figure 3 shown, the screening device 2 includes a screen surface 2a, a vibrating trough 2b, a vibrating arm 2c, an exciting motor 2d, a shock-absorbing spring 2e, a tail discharge port 2f, a lower-layer discharge port 2g, and a vibrating trough support 2h; wherein,

[0005] the head of the screen surface 2a is located below the feeding device, the screen surface 2a covers above the vibrating trough 2b and is at a certain height from the bottom surface of the vibrating trough; the vibrating trough 2b is installed on the vibrating trough support 2h through the vibrating arm 2c; the exciting motor 2d is fixed on the vibrating trough support 2h; the vibrating trough support 2h is fixed on the frame 4 through the shock-absorbing spring 2e; the tail discharge port is located at the tail of the vibrating screen; the lower-layer discharge port 2g is below the vibrating trough 2b.

[0006] The exciting motor 2d operates to drive the vibrating trough 2b to vibrate and convey the cut tobacco, the screen surface 2a screens and diverts the cut tobacco, the cut tobacco falling into the vibrating trough 2b through the screening of the screen surface 2a falls into the finished cut tobacco conveyor belt from the lower-layer discharge port 2g, and the cut tobacco screened to the tail of the screen surface 2a falls into the recycled cut tobacco conveyor belt from the tail discharge port 2f.

[0007] Through multiple practices, it is found that the differences between new tobacco and traditional tobacco result in that using the processing device of traditional cigarettes to process new tobacco cannot obtain better homogenized finished products. The differences include:

[0008] 1. The tobacco leaf raw materials of new tobacco are different from those of traditional flue-cured tobacco leaves. The cut cut tobacco is relatively straight and is not easily curled after being dried and shaped.

[0009] 2. Most new tobacco products are smoked by means of heating without combustion in smoking devices. When the cut tobacco is rolled, it is generally arranged in a completely orderly manner or a relatively orderly manner, and the length of the cut tobacco needs to be uniform and consistent, and longer cut tobacco is not required.

[0010] Based on the above differences, if the tobacco is longer during the making process of new tobacco, the filling value of the tobacco will be lower than that of traditional cigarette tobacco, resulting in quality defects such as empty cigarettes and uneven density, affecting consumers' smoking experience and causing waste of raw and auxiliary materials. Therefore, new tobacco products should have different requirements in terms of tobacco quality, rolling quality, etc.

[0011] In order to improve the homogenization processing capability of new tobacco, it is necessary to produce new tobacco shreds according to a set length in the shred process. To solve the problem of processing new tobacco shreds according to a set standard length, improve the rolling quality and sensory quality of new tobacco products, improve the homogenization processing capability, and reduce the waste of raw and auxiliary materials, it is necessary to develop a processing device that can produce new tobacco shreds according to a set length. Summary of the Invention

[0012] In order to improve the rolling quality and sensory quality of novel tobacco products, enhance the homogenization processing capability, and reduce the waste of raw and auxiliary materials, the present invention provides a processing device for producing novel tobacco shreds according to a set length, so that the novel tobacco shreds can be processed according to the set standard length.

[0013] To achieve the above-mentioned purpose, the present invention provides a processing device for producing new tobacco shreds according to a set length, comprising: a feeding device, a screening device, a shredder, and a frame; wherein,

[0014] The feeding device is located at the head of the screening device, the shredder is located at the tail of the screening device, and the screening device is located at the bottom of the feeding device. The feeding device, the screening device and the shredder are fixed to the frame.

[0015] The screening device includes a screen surface, a vibration trough, a vibration arm, an excitation motor, a shock-absorbing spring, a tail discharge port, a lower discharge port, and a vibration trough bracket. The head of the screen surface is located at the bottom of the feeding device, and the screen surface covers the top of the vibration trough and is a certain height away from the bottom of the vibration trough. The vibration trough is mounted on the vibration trough bracket through the vibration arm. The excitation motor is fixed to the vibration trough bracket. The vibration trough bracket is fixed to the frame through the shock-absorbing spring. The lower discharge port is below the vibration trough. The tail discharge port is at the tail of the vibration trough.

[0016] The shredder includes multiple toothed rollers, lower chain, upper chain, variable frequency motor; shredder knife, shredder knife holder, crank connecting rod mechanism, stepper motor, and control cabinet;

[0017] Multiple toothed rollers are respectively axially connected and fixed to the frame. The axial projections of the multiple toothed rollers form a quadrilateral structure that contracts along the horizontal radial direction, and 4 toothed rollers are located at the four corners of the quadrilateral; the lower row of chains is wound horizontally around the toothed rollers at the two lower corners of the quadrilateral, and the head of the lower row of chains is located below the tail discharge port of the screening device or the head of the lower row of chains is connected to the tail discharge port of the screening device; the upper row of chains is located above the lower row of chains, and the upper row of chains is wound around the toothed rollers at the two upper corners of the quadrilateral; there is a gap between the upper and lower rows of chains. One end of the toothed roller at the tail of the lower row of chains is connected to the output end of the stepping motor through a chain;

[0018] The inner side of the cutting knife is close to the tail of the upper row of chains, and the cutting edge of the cutting knife is fixedly installed downward on the cutting knife holder; the cutting knife holder is connected to the output end of the variable-frequency motor through a crank-link mechanism; the variable-frequency motor and the stepping motor are signal-connected to the control cabinet.

[0019] The blanking chute of the cutting machine is located below the outside of the cutting knife.

[0020] One end of the toothed roller at the tail of the lower row of chains is connected to the output end of the stepping motor through a belt / chain, and the other end drives the toothed roller at the tail of the upper row of chains to rotate at the same speed and in the opposite direction through external meshing of gears. The toothed roller further drives the upper and lower rows of chains engaged with it to rotate. When the horizontally arranged lower row of chains rotates, the cut tobacco is conveyed from the head to the tail of the lower row of chains. The side of the lower row of chains close to the screening device is the head.

[0021] The gap between the upper and lower rows of chains forms a channel for material transportation and compaction. After the cut tobacco that has been screened and had its direction adjusted enters this channel, it is squeezed by the upper and lower rows of chains in the channel to form a solid tobacco cake. The tobacco cake is conveyed under the cutting knife. The variable-frequency motor drives the crank-link mechanism through a belt drive method. The crank-link mechanism drives the cutting knife holder to reciprocate up and down. The cutting knife adopts a flat knife structure. The cutting knife holder drives the cutting knife fixedly connected to it to reciprocate up and down, and the cutting knife cuts the conveyed cut tobacco.

[0022] By setting the same module and number of teeth for the gears of each toothed roller, the rotational speeds of each part can be made the same, controlling the upper row of chains to rotate at the same speed and in the opposite direction, ensuring the forward transportation of materials and improving the compaction efficiency.

[0023] By adjusting the distance between the toothed rollers at the two lower corners of the quadrilateral, the tension of the lower row of chains can be flexibly adjusted.

[0024] Preferably, the upper row of chains is shorter than the lower row of chains. The lower row of chains is horizontally arranged, and the upper row of chains is arranged at a certain angle relative to the lower row of chains. The gap between the upper and lower rows of chains gradually narrows from the head to the tail of the lower row of chains, forming a material transportation and compaction channel with a large inlet and a small outlet, and the compaction effect of the cut tobacco is good.

[0025] Preferably, the upper row of chains and the lower row of chains are arranged in parallel, and the upper and lower sides of the trapezoid formed by the axial projections of multiple toothed rollers are parallel, making the process of tobacco shred compaction and transportation smoother.

[0026] Preferably, the lower row of chains is arranged to slope downwards from the head to the tail. Driven by gravity and the lower row of chains, the transportation effect of the tobacco shreds is better.

[0027] Preferably, one end of the toothed roller at the tail of the lower row of chains is connected to the output end of the stepping motor through a chain to drive the lower row of chains to move forward, and the other end drives the toothed roller at the tail of the upper row of chains to rotate in the same speed and opposite direction through external gear meshing. The upper row of chains has a power source, which can assist the lower row of chains in transporting and compacting the tobacco shreds.

[0028] Preferably, the upper and lower rows of chains are composed of multiple chain units, and adjacent chain units are connected in series in pairs through pins. Compared with belt transportation, the chain composed of chain units has higher mechanical strength, does not slip when meshing with the toothed roller for synchronous operation, forms a stable speed control, and has good transportation and compaction effects.

[0029] Preferably, between the upper row of chains and the cutting knife, there is a knife gate mechanism. One side of the knife gate mechanism is close to the upper row of chains, and the other side is close to the cutting knife. The lower edge of the knife gate mechanism is flush with the lower edge of the upper row of chains. The knife gate mechanism arranged between the upper row of chains and the cutting knife can press the tobacco shreds to keep the tobacco shreds in a compressed state all the time.

[0030] Preferably, the cutting knife holder has kidney-shaped holes, and bolts pass through the kidney-shaped holes to fix the cutting knife to the cutting knife holder. The setting of the kidney-shaped holes in the cutting knife holder enables the up-and-down position of the cutting knife to be adjusted flexibly according to the degree of wear.

[0031] Preferably, one end of the crank connecting rod mechanism is equipped with an induction wheel that rotates synchronously with it. There is a boss on the induction wheel. It also includes a proximity switch and a control cabinet connected by signals. Among them, the proximity switch corresponds to the boss on the induction wheel, is used to detect the boss on the induction wheel, and feeds back the detection signal to the control cabinet. The control cabinet sends a stepping signal to the stepping motor according to the detection signal, so that it steps a corresponding distance within the detection time of the boss, and pushes the tobacco shreds forward by a set distance.

[0032] More preferably, the boss occupies 1 / 3 of the circumference of the induction wheel, and the detection signal of the proximity switch to the boss is more accurate, ensuring the cooperation between the induction wheel and the crank, and the stepping motor only works when the cutting knife is lifted.

[0033] More preferably, the control cabinet is also connected to the frequency conversion motor through signals. The PLC of the control cabinet outputs a control signal to the frequency conversion motor to adjust the motor speed of the frequency conversion motor, thereby adjusting the crank speed. Increasing the crank speed increases the reciprocating frequency of the cutting knife up and down. At the same time, since an induction wheel is installed at one end of the crank connecting rod mechanism and rotates synchronously, the protrusion on the induction wheel is detected by a proximity switch. During the detection time of the protrusion, the discharge chain steps a corresponding distance. The higher the rotation speed of the induction wheel, the shorter the detection time of the protrusion, which reduces the stepping distance of the discharge chain, and thus the distance of the cut tobacco transported forward is shortened. Vice versa. By adjusting the motor speed of the frequency conversion motor and the crank speed, the reciprocating frequency of the cutting knife up and down and the stepping distance of the discharge chain are controlled to achieve flexible adjustment of the cut lengths of 5mm, 10mm, 15mm, 20mm, and 25mm. The required cut length can be set in the control cabinet.

[0034] Beneficial effects:

[0035] The present invention provides a processing device for producing new tobacco cut tobacco according to a set length. After using a cut tobacco fixed-length cutting machine, the cut tobacco exceeding the length requirement will be further cut into cut tobacco meeting the length requirement. It solves the problem of processing new tobacco cut tobacco according to the set standard length, improves the rolling quality and sensory quality of new tobacco products, enhances the homogenization processing ability, and reduces the waste of raw and auxiliary materials.

[0036] The present invention uses a crank connecting rod mechanism to drive the cutting knife to reciprocate up and down, having a good cutting effect. The upper and lower discharge chains compact the cut tobacco and step-feed it in cooperation with the cutting frequency. The control cabinet can flexibly set the required cut length. By adjusting the speed of the frequency conversion motor, the reciprocating cutting frequency of the cutting knife up and down can be further adjusted. At the same time, a proximity switch is used to control the stepping motor of the discharge chain to step a corresponding distance, pushing the cut tobacco forward to achieve flexible adjustment of the cut length.

[0037] By replacing the sieve surface with different sieve hole sizes and adjusting the cutting frequency of the cut tobacco fixed-length cutting machine, the production requirements of cut tobacco length specifications of 5mm, 10mm, 15mm, 20mm, and 25mm can be met. For example, when the cut length is 5mm, increasing the speed of the frequency conversion motor and thus increasing the rotation speed of the induction wheel will cause the detection time of the protrusion by the proximity switch to be shortened, and then the stepping time of the stepping motor will be shortened, and the distance of the discharge chain transporting the cut tobacco forward will be correspondingly shortened. Similarly, other cut lengths can be flexibly adjusted according to the ratio of different speeds. The screening qualification rate reaches over 70%, and the cutting rate reaches 98%.

[0038] In summary, the present invention is applicable to the processing of new tobacco product cut tobacco according to a set standard length, and has the characteristics of convenient operation, simple and reliable structural principle, high processing qualification rate, high flexibility, etc. The physical properties of the cut tobacco after processing are stable, with a high filling value, improving the utilization rate of raw and auxiliary materials, being able to meet the requirements of high-speed cigarette making. The new tobacco produced has a high rolling quality and sensory quality, improving the cigarette homogenization processing ability, and fully meeting the product processing requirements and quality requirements of new tobacco. Brief Description of the Drawings

[0039] Figure 1 It is a schematic diagram of an existing processing device for tobacco cut tobacco

[0040] Figure 2 It is a processing device diagram for producing new tobacco cut tobacco according to a set length of the present invention

[0041] Figure 3 It is a schematic diagram of a screening device

[0042] Figure 4 It is an example diagram of a cutting machine of the device of the present invention

[0043] Figure 5 It is Figure 4 The axial projection diagram of the tooth-shaped roller of the cutting machine

[0044] Figure 6 It is another example diagram of a cutting machine of the device of the present invention

[0045] Figure 7 It is Figure 6 The axial projection diagram of the tooth-shaped roller of the cutting machine

[0046] Figure 8 It is the third axial projection diagram of the tooth-shaped roller of the cutting machine

[0047] Figure 9 It is a schematic diagram of the cutting knife and the cutting knife holder of the cutting machine

[0048] Explanation of Main Element Symbols:

[0049] Feeding device 1, screening device 2, cutting machine 3, frame 4, conveyor belt 5

[0050] Screen surface 2a, vibrating trough 2b, vibrating arm 2c, exciting motor 2d, shock-absorbing spring 2e, tail discharge port 2f, lower layer discharge port 2g, vibrating trough support 2h

[0051] Tooth-shaped roller 3a, lower row chain 3b, upper row chain 3c, variable-frequency motor 3d; cutting knife 3e, cutting knife holder 3f, crank and connecting rod mechanism 3g, stepping motor 3h, control cabinet 3i, cutting machine blanking chute 3j, induction wheel 3k, knife gate mechanism 3m, proximity switch 3n

[0052] Axial projections of the toothed rollers S1, S2, and S3

[0053] X horizontal direction

[0054] α Angle between the lower row of chains and the horizontal direction Specific implementation manner

[0055] To clearly describe the present invention, it will be further described in detail below in conjunction with the accompanying drawings.

[0056] As Figure 2 shown, a processing device for producing new tobacco cut tobacco according to a set length described in the present invention includes: a feeding device 1, a screening device 2, a cutting machine 3, and a frame 4; wherein,

[0057] The feeding device 1 is located at the head of the screening device 2, the cutting machine 3 is located at the tail of the screening device 2, and moreover, the screening device 2 is located below the feeding device 1, and the feeding device 1, the screening device 2, and the cutting machine 3 are fixed to the frame 4;

[0058] As Figure 3 shown, the screening device 2 includes a screen surface 2a, a vibrating trough 2b, a vibrating arm 2c, an exciting motor 2d, a shock-absorbing spring 2e, a tail discharge port 2f, a lower-layer discharge port 2g, and a vibrating trough support 2h.

[0059] Among them, the screen surface 2a covers above the vibrating trough 2b, the vibrating trough 2b is installed on the vibrating trough support 2h through the vibrating arm 2c, the vibrating trough support 2h is fixed on the frame 4 through the shock-absorbing spring 2e, and the exciting motor 2d is fixed on the vibrating trough support 2h.

[0060] The head of the screen surface 2a is located below the feeding device 1, at a certain height from the bottom surface of the vibrating trough 2b, the lower-layer discharge port 2g is below the vibrating trough 2b, the tail discharge port 2f is at the tail of the vibrating trough 2b, the exciting motor 2d is fixedly installed on the vibrating trough support 2h, and the exciting motor 2d provides power to drive the movement of the vibrating trough support 2h, and then drives the screen surface 2a and the vibrating trough 2b to vibrate through the vibrating arm 2c to screen the cut tobacco.

[0061] Due to the adoption of the vibrating arm exciting vibrating screen 4 combining the vibrating arm 2c with the exciting motor 2d and the shock-absorbing spring 2e, it enables it to have the ability to convey and screen the cut tobacco at the same time, so that the cut tobacco meeting the length requirements falls through the screen surface 2a and enters the subsequent process, and the cut tobacco exceeding the length requirements cannot pass through the screen surface 2a and drops, and after being sorted and adjusted in direction by the screen surface 2a, it vertically enters the cut tobacco fixed-length cutting machine 3 for further processing.

[0062] As Figure 2 shown, after a part of the tobacco leaves fall from the screen surface 2a into the vibrating trough 2b, they fall from the lower-layer discharge port 2g onto the conveyor belt 5; another part of the cut tobacco is screened to the tail discharge port 2f of the screen surface 2a and falls into the cutting machine 3.

[0063] As Figure 2 、 Figure 4 shown in the figure, the tobacco cutter 3 includes four toothed rollers 3a, a lower endless chain 3b, an upper endless chain 3c, a motor 3d; a cutting knife 3e, a cutting knife holder 3f, a crank and connecting rod mechanism 3g, a stepping motor 3h, a control cabinet 3i, and a tobacco cutter blanking chute 3j. The four toothed rollers 3a are respectively axially connected and fixed to the frame 4.

[0064] The direction of the lower endless chain 3b close to the screening device 2 is the head, and the direction close to the tobacco cutter 3 is the tail. The head of the lower endless chain 3b is located below the tail discharge port 2f of the screening device 2. The output end of the stepping motor 3h is connected to one end of the toothed roller 3a at the tail of the lower endless chain 3b through a chain. When the stepping motor 3h operates, its output end drives the toothed roller 3a at the tail of the lower endless chain 3b through the chain, and the other end of the toothed roller 3a further drives the toothed roller 3a at the tail of the upper endless chain 3c to rotate at the same speed in the opposite direction through an external meshing gear, thereby driving the lower endless chain 3b and the upper endless chain 3c to move respectively, and conveying and compacting the cut tobacco that falls from the tail discharge port 2f of the screening device 2 onto the horizontally arranged lower endless chain 3b from the head to the tail of the lower endless chain 3b to the cutting knife 3e.

[0065] The inner side of the cutting knife 3e is close to the tail of the upper endless chain 3c, and the cutting edge of the cutting knife 3e is fixedly installed downward on the cutting knife holder 3f; the cutting knife holder 3f is connected to the output end of the endless chain stepping motor 3h through a crank and connecting rod mechanism 3g; the stepping motor 3h is signal-connected to the control cabinet 3i. The tobacco cutter blanking chute 3j is located below the outside of the cutting knife 3e.

[0066] As Figure 5 shown in the figure, the axial projection of the four toothed rollers 3a is a quadrilateral s1 that contracts along the horizontal radial direction, and the four toothed rollers 3a are respectively located at the four corners of the quadrilateral s1. The lower endless chain 3b is wound around the toothed rollers 3a at the two lower corners of the quadrilateral in the horizontal direction; the upper endless chain 3c is located above the lower endless chain 3b, and the upper endless chain 3c is wound around the toothed rollers 3a at the two upper corners of the quadrilateral s1. There is a gap between the upper and lower endless chains for accommodating and compacting the cut tobacco.

[0067] The gap between the upper and lower endless chains forms a channel for material transportation and compaction. After the cut tobacco that has been screened and its direction adjusted enters this channel, it is squeezed by the upper and lower endless chains in the channel to form a solid tobacco cake, and the tobacco cake is conveyed under the cutting knife 3e.

[0068] The upper endless chain is shorter than the lower endless chain. The lower endless chain is horizontally arranged, and the upper endless chain is arranged at a certain angle α relative to the lower endless chain. The gap between the upper and lower endless chains gradually decreases from the head to the tail of the lower endless chain, forming a material transportation and compaction channel with a large inlet and a small outlet, and the compaction effect of the cut tobacco is good.

[0069] As Figure 2 、 Figure 4As shown, the variable-frequency motor 3d drives the crank-link mechanism 3g through a belt drive. The crank-link mechanism 3g drives the wire cutting tool holder 3f to reciprocate up and down. The wire cutting tool 3e adopts a flat tool structure. The wire cutting tool holder 3f drives the wire cutting tool 3e fixedly connected thereto to reciprocate up and down, and the wire cutting tool 3e cuts the conveyed tobacco shreds.

[0070] By setting the same module and number of teeth for the gears of each toothed roller 3a, the rotational speeds of all parts can be made the same, controlling the upper row chain 3c to rotate in the same speed and in opposite directions, ensuring the forward conveyance of materials and improving the compaction efficiency.

[0071] By adjusting the distance between the toothed rollers 3a at the two lower corners of the trapezoid, the tension degree of the lower row chain 3b can be flexibly adjusted.

[0072] By adjusting the distance between the toothed rollers 3a at the two lower corners of the quadrilateral, the tension degree of the lower row chain 3b can be flexibly adjusted.

[0073] Figure 2 A processing device for producing new tobacco shreds according to a set length as shown can change the structure of its wire cutting machine 3 to obtain a better wire cutting effect.

[0074] As Figure 6 As shown, it is another structure of the wire cutting machine. The wire cutting machine 3 includes four toothed rollers 3a, a lower row chain 3b, an upper row chain 3c, a variable-frequency motor 3d; a wire cutting tool 3e, a wire cutting tool holder 3f, a crank-link mechanism 3g, a stepping motor 3h, a control cabinet 3i, a wire cutting machine blanking chute 3j, as well as an induction wheel 3k, a knife gate mechanism 3m, and a proximity switch 3n. The five toothed rollers 3a are respectively axially connected and fixed to the frame 4.

[0075] The direction of the lower row chain 3b close to the screening device 2 is the head, and the direction close to the wire cutting machine 3 is the tail. The head of the lower row chain 3b is connected to the tail discharge port of the screening device. The output end of the stepping motor 3h is connected to one end of a toothed roller 3a meshing with the tail of the lower row chain 3b through a chain. When the stepping motor 3h operates, its output end drives the toothed roller 3a at the tail of the lower row chain 3b through the chain, and the other end of the toothed roller 3a further drives the toothed roller 3a at the tail of the upper row chain 3c to rotate in the same speed and in opposite directions through an external meshing gear, thereby driving the lower row chain 3b and the upper row chain 3c to move respectively, and conveying and compacting the tobacco shreds falling from the tail discharge port 2f of the screening device 2 onto the horizontally arranged lower row chain 3b from the head to the tail of the lower row chain 3b to the wire cutting tool 3e.

[0076] Between the upper row chain 3c and the wire cutting tool 3e, there is a knife gate mechanism 3m, as Figure 6As shown in the figure, the left side of the knife gate mechanism 3m is close to the upper row of chains 3c, the right side of the knife gate mechanism 3m is close to the cutting knife 3e, and the lower edge of the knife gate mechanism 3m is flush with the lower edge of the upper row of chains 3c. By arranging the knife gate mechanism 3m between the upper row of chains 3c and the cutting knife 3e, the cut tobacco can be pressed, so that the cut tobacco always remains in a pressed state when the cutting knife is lifted.

[0077] The cutting knife holder 3f is provided with kidney-shaped holes. Bolts pass through the kidney-shaped holes to fix the cutting knife 3e to the cutting knife holder 3f. The cutting edge of the cutting knife 3e is fixedly installed downward on the cutting knife holder 3f. The setting of the kidney-shaped holes on the cutting knife holder 3f enables the vertical position of the cutting knife 3e to be flexibly adjusted according to the degree of wear. The cutting knife holder 3f is connected to the output end of the variable-frequency motor 3d through a crank-link mechanism 3g; the variable-frequency motor 3d and the stepping motor 3h are signal-connected to the control cabinet 3i. The blanking chute 3j of the cutting machine is located below the outside of the cutting knife 3e.

[0078] As Figure 6 shown in the figure, one end of the crank-link mechanism 3g is connected to the variable-frequency motor 3d through a belt, and the other end is equipped with an induction wheel 3k that rotates synchronously with it. The induction wheel 3k is provided with a convex platform. When the proximity switch 3n senses the convex platform, a signal will be generated and transmitted to the control cabinet 3i. The convex platform occupies 1 / 3 of the circumference of the induction wheel, making the detection signal of the proximity switch for the convex platform more accurate, ensuring the cooperation between the induction wheel and the crank, and enabling the stepping motor to work only when the cutting knife is lifted.

[0079] The control cabinet 3i sends a stepping signal based on the signal transmitted by the proximity switch 3n, so that it steps a corresponding distance within the convex platform detection time, and pushes the cut tobacco forward by a set distance.

[0080] The control cabinet 3i is also signal-connected to the variable-frequency motor 3d. The PLC of the control cabinet 3i outputs a control signal to the variable-frequency motor 3d to adjust the motor speed of the variable-frequency motor 3d, and then adjust the crank speed. By increasing the speed of the crank-link 3g, the reciprocating frequency of the cutting knife 3e up and down is increased. At the same time, since the other end of the crank-link mechanism 3g is equipped with an induction wheel 3k that rotates synchronously, the convex platform on the induction wheel 3k is detected by the proximity switch 3n. During the convex platform detection time, the row of chains steps a corresponding distance. The higher the speed of the induction wheel 3k, the shorter the convex platform detection time, resulting in a smaller stepped distance of the row of chains, and thus a shorter forward conveying distance of the cut tobacco. Vice versa. Therefore, by adjusting the motor speed of the variable-frequency motor 3d and the crank speed, the reciprocating frequency of the cutting knife 3e up and down and the stepped distance of the row of chains can be controlled, realizing the flexible adjustment of the cutting lengths of 5mm, 10mm, 15mm, 20mm, and 25mm. The required cutting length can be set in the control cabinet 3i.

[0081] As Figure 7As shown, the axial projection of the five toothed rollers 3a is trapezoidal s2, and four of the toothed rollers 3a are respectively located at the four corners of the trapezoid s2. The lower row of chains 3b is wound horizontally around the toothed rollers 3a at the two lower corners of the trapezoid; the upper row of chains 3c is located above the lower row of chains 3b, and the upper row of chains 3c is wound around the toothed rollers 3a at the two upper corners of the trapezoid s2. There is a gap between the upper and lower rows of chains for accommodating and compacting the cut tobacco. The gap between the upper and lower rows of chains forms a channel for material transportation and compaction. After the cut tobacco that has been screened and its direction adjusted enters this channel, it is squeezed by the upper and lower rows of chains to form a solid tobacco cake, and the tobacco cake is transported under the cutting knife 3e.

[0082] As Figure 5 , Figure 7 , Figure 8 Shown are three different examples of the upper and lower rows of chains. The upper row of chains 3c is shorter than the lower row of chains 3b. The upper and lower rows of chains form a material transportation and compaction channel with a large inlet and a small outlet, and the compaction effect of the cut tobacco is good. Figure 5 In the example shown, the upper row of chains 3c and the lower row of chains 3b are arranged in parallel, and the upper and lower sides of the trapezoid formed by the axial projection of the multiple toothed rollers 3a are parallel, and the process of compacting and transporting the cut tobacco is smoother. Figure 7 In the example shown, the upper row of chains 3c is arranged at an angle relative to the lower row of chains 3b, and the gap between the upper and lower rows of chains gradually decreases from the head to the tail of the lower row of chains 3b, and the compaction effect of the cut tobacco is good. Figure 8 In the example shown, the lower row of chains 3b is arranged obliquely downward from the head to the tail, and an angle a is formed between the lower row of chains 3b and the horizontal direction X. Driven by the lower row of chains 3b and simultaneously affected by the gravity, the cut tobacco can obtain a better transportation effect.

[0083] In the above examples, the output end of the motor 3d is meshed with a toothed roller 3a of a lower row of chains 3b through a belt / chain to drive the lower row of chains 3b, which can be improved to that at least one toothed roller 3a meshing with the upper row of chains 3c is connected to the output end of the motor 3d through a belt / chain. Thus, the upper row of chains also has a power source and can assist the lower row of chains in compacting and transporting the cut tobacco.

[0084] In the above examples, the upper and lower rows of chains are composed of multiple chain units, and adjacent chain units are connected in series in pairs through pin shafts. Compared with belt transportation, using a chain composed of chain units has higher mechanical strength, does not slip when meshing with the toothed roller, forms a stable speed control, and has good transportation and compaction effects.

[0085] Beneficial effects:

[0086] To solve the problem of processing new tobacco cut tobacco according to the set standard length, improve the rolling quality and sensory quality of new tobacco products, improve the homogenization processing ability, and reduce the waste of raw and auxiliary materials, the present invention provides a processing device for producing new tobacco cut tobacco according to the set length.

[0087] Due to the adoption of a tobacco cut-to-length cutting machine, the tobacco shreds exceeding the length requirement will be further cut into tobacco shreds meeting the length requirement. Using a crank connecting rod mechanism to drive the cutting knife to reciprocate up and down has a good cutting effect. The upper and lower row chains compact the tobacco shreds and perform step-by-step conveying in coordination with the cutting frequency. The control cabinet can flexibly set the required cutting length. By adjusting the rotational speed of the variable frequency motor, the reciprocating cutting frequency of the cutting knife up and down can be further adjusted. At the same time, a proximity switch is used to control the step motor of the row chain to make it step a corresponding distance in proportion, pushing the tobacco shreds forward for conveying, realizing the flexible adjustment of the cutting length; by replacing the screen surface with different screen hole sizes and adjusting the cutting frequency of the tobacco cut-to-length cutting machine, the production requirements for tobacco shred length specifications of 5mm, 10mm, 15mm, 20mm, and 25mm can be met. For example, when the cutting length is 5mm, increasing the rotational speed of the variable frequency motor will increase the rotational speed of the induction wheel, resulting in a shorter detection time of the proximity switch for the convex platform, and then shortening the stepping time of the step motor, and the distance for driving the row chain to convey the tobacco shreds forward will be correspondingly shortened. Similarly, other cutting lengths can be flexibly adjusted according to the ratio of different rotational speeds. The screening qualification rate reaches over 70%, and the cutting rate reaches 98%.

[0088] To sum up, the present invention is applicable to the processing of tobacco shreds for new tobacco products according to the set standard length, and has the characteristics of convenient operation, simple and reliable structural principle, high processing qualification rate, high flexibility, etc. After processing, the physical properties of the tobacco shreds are stable, with a high filling value, improving the utilization rate of raw and auxiliary materials, being able to meet the requirements of high-speed cigarette production. The new tobacco produced has a high rolling quality and sensory quality, improving the homogenization processing ability of cigarettes, and fully meeting the product processing requirements and quality requirements of new tobacco.

Claims

1. A processing device for producing new tobacco cut filler according to a set length, comprising: Feeding device, screening device, wire cutting machine, and frame; among them, The feeding device is located at the head of the screening device, the wire cutting machine is located at the tail of the screening device, and the screening device is located below the feeding device. The feeding device, screening device, and wire cutting machine are fixed to the frame; The screening device includes a screen surface, a vibrating trough, vibrating arms, an exciting motor, shock-absorbing springs, a tail discharge port, a lower layer discharge port, and a vibrating trough support; the head of the screen surface is located below the feeding device, the screen surface covers above the vibrating trough, and is at a certain height from the bottom surface of the vibrating trough; the vibrating trough is installed on the vibrating trough support through the vibrating arms; the exciting motor is fixed on the vibrating trough support; the vibrating trough support is fixed on the frame through the shock-absorbing springs; the lower layer discharge port is below the vibrating trough; the tail discharge port is at the tail of the vibrating trough; The wire cutting machine includes multiple toothed rollers, a lower chain, an upper chain, and a variable-frequency motor; wire cutting knives, wire cutting knife holders, a crank-link mechanism, a stepping motor, and a control cabinet; Multiple toothed rollers are respectively axially connected and fixed to the frame. The axial projections of the multiple toothed rollers form a quadrilateral that contracts along the horizontal radial direction, and 4 toothed rollers are located at the four corners of the quadrilateral; the lower chain is wound horizontally around the toothed rollers at the two lower corners of the quadrilateral, and the head of the lower chain is located below the tail discharge port of the screening device or the head of the lower chain is connected to the tail discharge port of the screening device; the upper chain is located above the lower chain and is wound around the toothed rollers at the two upper corners of the quadrilateral; there is a gap between the upper and lower chains; the output end of the stepping motor is connected to one end of the toothed roller at the tail of the lower chain through a chain, and the other end drives the toothed roller at the tail of the upper chain to rotate at the same speed and in the opposite direction through the external meshing of gears; The inner side of the wire cutting knife is close to the tail of the upper chain, and the cutting edge of the wire cutting knife is fixedly installed downward on the wire cutting knife holder; the wire cutting knife holder is connected to the output end of the variable-frequency motor through a crank-link mechanism; the variable-frequency motor is signal-connected to the control cabinet; The blanking chute of the wire cutting machine is located below the outside of the wire cutting knife; One end of the crank-link mechanism is equipped with an induction wheel that rotates synchronously with it. There is a convex platform on the induction wheel. It also includes a proximity switch and a control cabinet that are signal-connected. Among them, the proximity switch corresponds to the convex platform on the induction wheel, is used to detect the convex platform on the induction wheel, and feeds back the detection signal to the control cabinet. The control cabinet sends a stepping signal to the stepping motor according to the detection signal; the convex platform occupies 1 / 3 of the circumference of the induction wheel; The control cabinet is signal-connected to the variable-frequency motor. The PLC of the control cabinet outputs a control signal to the variable-frequency motor to adjust the motor speed of the variable-frequency motor, and further adjusts the crank speed.

2. The processing device for producing new tobacco cut tobacco according to a set length as described in claim 1, characterized in that, The upper chain is shorter than the lower chain. The lower chain is horizontally arranged, and the upper chain is arranged at a certain angle relative to the lower chain. The gap between the upper and lower chains gradually decreases from the head to the tail of the lower chain, forming a material conveying and compaction channel with a large inlet and a small outlet.

3. The processing device for producing new tobacco cut filler according to a set length as claimed in claim 1, characterized in that, The upper chain and the lower chain are arranged in parallel, and the upper and lower sides of the trapezoid formed by the axial projections of the multiple toothed rollers are parallel.

4. The processing device for producing new tobacco cut tobacco according to a set length as described in claim 1, characterized in that, The lower chain is arranged obliquely downward from the head to the tail.

5. The processing device for producing new tobacco cut filler according to a set length as described in claim 1, wherein, The upper and lower chains are composed of multiple chain units, and adjacent chain units are connected in series in pairs through pins.

6. The processing device for producing new tobacco cut filler according to a set length as described in claim 1, characterized in that, Between the upper chain and the wire cutting knife, a knife gate mechanism is provided. One side of the knife gate mechanism is close to the upper chain, and the other side is close to the wire cutting knife. The lower edge of the knife gate mechanism is flush with the lower edge of the upper chain.

7. The processing device for producing new tobacco cut filler according to a set length as described in claim 1, characterized in that, The wire cutting tool holder has kidney-shaped holes, and bolts pass through the kidney-shaped holes to fix the wire cutting tool to the wire cutting tool holder.

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