Drum type cigarette lifting mechanism and design method thereof

Abstract

The invention belongs to the technical field of cigarette production, and discloses a drum type cigarette lifting mechanism and a design method thereof. The mechanism comprises a first drum wheel and a second drum wheel, the first drum wheel and the second drum wheel are each provided with at least two cigarette bearing grooves in the circumferential direction, the first drum wheels are used for guiding in cigarettes and lifting the cigarettes to the preset height, the at least one first drum wheel is arranged between the conveying drum wheel and the second drum wheel, and the second drum wheel is used for conveying the cigarettes to an elevated conveyor. And the number of the first driving gears for driving the first drum wheels is three times of the number of the cigarette bearing grooves formed in the corresponding first drum wheels. The number of the first driving gears is three times that of the cigarette bearing grooves formed in the corresponding first drum wheels, high-speed and high-stability cigarette conveying can be achieved between the first drum wheels, the problems of cigarette falling, cigarette skewing, shrinkage deformation, cigarette disorder and the like are solved, cigarette waste is reduced, product quality and equipment efficiency are optimized, and the production cost is reduced. And the automation level of the cigarette conveying and storing equipment is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of cigarette production, and in particular to a drum-type cigarette lifting mechanism and a design method thereof. Background Art

[0002] The YF17 cigarette storage and conveying system is used to convey cigarettes produced by the cigarette making machine to the packaging machine, and has storage and buffer adjustment functions to achieve flexible connection and automated production of rolling and packaging equipment. However, the cigarettes are lifted by entrainment, and there are problems such as falling, tilting, shrinking and deformation of cigarettes during operation, which affects product quality and equipment operation efficiency.

[0003] In the prior art, measures such as improving the entrance and exit bends of the elevator, improving the arc plate of the lifting channel, reducing the width of the vertical section of the elevator flue and improving the conveying chain plate have played a role in reducing cigarette deformation, improving product quality and equipment efficiency to a certain extent. However, they cannot solve the problems of cigarette falling, cigarette tilting, wrinkling and deformation, and disorderly cigarettes during operation, and will cause cigarette waste during the start-up and end-of-running of the equipment, affecting product quality and equipment efficiency.

[0004] Based on the above, there is an urgent need for a drum-type cigarette lifting mechanism and a design method thereof to solve the above technical problems. Summary of the invention

[0005] One object of the present invention is to provide a drum-type cigarette lifting mechanism to solve the problems of cigarette falling, cigarette tilting, shrinkage and deformation, and disorderly cigarettes during operation, reduce cigarette waste, and optimize product quality and equipment efficiency.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The drum-type cigarette lifting mechanism is used to dock with the conveying drum wheel, and includes at least one first drum wheel and one second drum wheel. The first drum wheel and the second drum wheel are both circumferentially provided with at least two cigarette receiving grooves, and the cigarette receiving grooves are used to accommodate and adsorb and fix cigarettes. The first drum wheel is used to guide the cigarettes into the drum-type cigarette lifting mechanism and lift them to a preset height. The at least one first drum wheel is arranged between the conveying drum wheel and the second drum wheel. The second drum wheel is used to convey the cigarettes to the overhead conveyor, and,

[0008] The drum-type cigarette lifting mechanism also includes a driving system, which includes at least one first driving gear. Each of the first driving gears is correspondingly connected to one of the first drum wheels to drive the first drum wheel to rotate, and the number of gears of the first driving gear is 3 times the number of the cigarette receiving grooves of the corresponding first drum wheel.

[0009] Preferably, the first drum wheel includes a first wheel body, the outer circumferential surface of which is arranged with the smoke receiving grooves, and along the length direction of the smoke receiving grooves, each of the smoke receiving grooves is provided with at least two air suction holes, and the air suction holes are used to absorb and fix the cigarettes.

[0010] Preferably, the first drum wheel further comprises a first valve seat, and the first wheel body is rotatably sleeved and mounted on the first valve seat.

[0011] The first valve distribution seat has a first hollow inner cavity, which is connected to a negative pressure system capable of generating negative pressure, and a first valve distribution groove is partially provided on the outer peripheral surface of the first valve distribution seat along the circumferential direction of the first valve distribution seat. The first hollow inner cavity is connected to the air suction hole on the first wheel body that is rotated to a preset angle relative to the first valve distribution seat through the first valve distribution groove.

[0012] Preferably, the first gas distribution seat is further provided with an air blowing hole, and the air blowing hole is used to blow air into the first hollow inner cavity and the air suction hole for cleaning.

[0013] Preferably, the first drum further comprises connecting screws, an end cover and a flange cover, the first driving gear is connected to a drum shaft flange, the drum shaft flange, the flange cover, the end cover and the first wheel body are sequentially connected and arranged by the connecting screws,

[0014] The end cover is provided with a long hole, and the connection screw is adjustably arranged through the long hole and connected to the flange cover, so that the position between the flange cover and the end cover is adjustable.

[0015] Preferably, the driving system includes a second driving gear, the second driving gear is drivingly connected to the second drum to drive the second drum to rotate, and,

[0016] The number of gears of the second driving gear is three times the number of the smoke receiving grooves of the second drum wheel.

[0017] Preferably, the second drum wheel comprises a second wheel body and a second gas distribution seat, the outer circumferential surface of the second wheel body is provided with the smoke receiving grooves, and along the length direction of the smoke receiving grooves, each of the smoke receiving grooves is provided with at least two air suction holes.

[0018] The second wheel body is rotatably mounted on the second air distribution seat, and the second air distribution seat has a second hollow inner cavity and a second air distribution groove. The second hollow inner cavity is connected to a negative pressure system that can generate negative pressure, and along the circumferential direction of the second air distribution seat, the second air distribution groove is partially provided on the outer peripheral surface of the second air distribution seat, and the second hollow inner cavity is connected to the suction hole on the second wheel body that is rotated to a preset angle relative to the second air distribution seat through the second air distribution groove.

[0019] Preferably, along the rotation direction of the second wheel body, the width of the end of the second gas distribution groove is gradually reduced.

[0020] Preferably, the negative pressure system includes a control component and a servo motor, the servo motor is used to generate negative pressure, and the control component is signal-connected to the drive system and the servo motor so that the negative pressure value generated by the servo motor can increase with the increase of the driving power of the drive system.

[0021] Preferably, the negative pressure system further comprises a negative pressure sensor, which is used to detect the negative pressure of the air suction hole, and the negative pressure sensor signal is connected to the control component.

[0022] The beneficial effect of the drum-type cigarette lifting mechanism of the present invention is that by increasing the number of gears of the first driving gear to three times the number of cigarette receiving grooves of the corresponding first drum, the transmission between the first drums can meet the requirements of using drums for transmission, thereby meeting high-speed and high-stability cigarette transmission, solving problems such as cigarette falling, cigarette tilting, shrinkage and deformation, and disorderly cigarettes during operation, reducing cigarette waste, optimizing product quality and equipment efficiency, and effectively improving the automation level of cigarette conveying and storage equipment.

[0023] Another object of the present invention is to provide a design method for a drum-type cigarette lifting mechanism, which can be used to design a drum-type cigarette lifting mechanism to solve the problems of cigarette falling, cigarette tilting, shrinkage and deformation, and disorderly cigarettes during operation, reduce cigarette waste, and optimize product quality and equipment efficiency.

[0024] To achieve this object, the present invention adopts the following technical solutions:

[0025] A design method for a drum-type cigarette lifting mechanism is used to design the above-mentioned drum-type cigarette lifting mechanism, comprising:

[0026] The number of cigarette receiving grooves of the first drum in the drum-type cigarette lifting mechanism is set to one third of the number of gears of the first driving gear connected thereto; or

[0027] The number of gears of the first driving gear in the drum-type cigarette lifting mechanism is set to three times the number of cigarette receiving grooves of the first drum connected thereto.

[0028] The beneficial effect of the design method of the drum-type cigarette lifting mechanism of the present invention is that, through the above-mentioned design method, the material transmission amount of each drum in unit time can be equal to the material input amount, the relative speed between the drums at the intersection approaches zero, and the cigarette receiving grooves of the two drums are completely aligned when the cigarettes are handed over, ensuring that the drum wheels hand over materials stably and reliably, thereby enabling the drum-type cigarette lifting mechanism to achieve fast and reliable cigarette lifting through the drums. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a cigarette lifting mechanism of a cigarette receiving and loading machine in the prior art;

[0030] Figure 2 It is a structural schematic diagram of the drum-type cigarette lifting mechanism used in the present invention;

[0031] Figure 3 It is a schematic diagram of the air pressure of the drum-type cigarette lifting mechanism of the present invention;

[0032] Figure 4 It is a structural exploded diagram of the first drum in the present invention;

[0033] Figure 5 It is a schematic diagram of smoke discharge of the second drum wheel in the present invention;

[0034] Figure 6 It is a structural explosion diagram of the second drum in the present invention.

[0035] In the figure:

[0036] 100, cigarettes;

[0037] 1. first drum wheel; 11. first wheel body; 111. smoke bearing groove; 112. air suction hole; 12. first gas distribution seat; 121. first gas distribution groove; 122. air blowing hole; 13. connecting screw; 14. end cover; 141. long hole; 15. flange cover; 16. drum shaft flange;

[0038] 2. second drum wheel; 21. second wheel body; 22. second gas distribution seat; 221. second gas distribution groove;

[0039] 3. Transmission drum;

[0040] 4. Overhead conveyor; 41. Elastic guide plate; 42. Concave arc plate; 43. Floating wire mesh belt; 44. Polytetrafluoroethylene guide plate; 45. Conveyor belt. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0045] like Figure 1 , Figure 2As shown, in the existing receiving and loading machines, an entrainment type lifting mechanism is often used to lift the cigarettes 100. The cigarettes 100 are fed into the entrainment type lifting machine through the conveying drum 3 of the receiving and loading machine, and are stacked between the two entrainment belts of the entrainment type lifting machine to form a cigarette branch flow. As the entrainment belt continues to move upward, the cigarettes 100 in the outer layer of the cigarette branch flow that are in direct contact with the entrainment belt can roll upward with the entrainment belt, and then drive the inner layer of cigarettes 100 that are not in direct contact with the entrainment belt to roll and rise. When the upward friction force is less than the gravity of the cigarette branch flow itself, there will be a phenomenon of transportation jam and the falling of the cigarettes 100, and the density of the cigarettes 100 in the local area will increase, making the extrusion deformation between the cigarettes 100 more severe, until the friction force generated by the extrusion deformation is greater than the gravity, the cigarettes 100 will rise again. In this process, the cigarettes 100 are stacked, rubbed, and squeezed, especially the cigarettes 100 located in the outer layer of the cigarette branch flow. For example, when the lit end of the cigarette 100 is squeezed and rubbed to cause plastic deformation, there will be a speed difference with the rolling end of the filter, which will lead to horizontal and chaotic smoke, and it is very easy to cause dead corners and blockages at the bends of the cigarette flow or local corners in the entrainment type elevator. This phenomenon is particularly obvious when the equipment is started, which seriously leads to the waste of cigarettes 100 and affects product quality and equipment efficiency.

[0046] In order to solve the above problems, the present invention provides a drum-type cigarette lifting mechanism. Figure 2 To Attachment Figure 6 The drum-type cigarette lifting mechanism provided by the present invention is introduced by taking the application in the YJ212 receiving machine as an example. However, it should be noted that the drum-type cigarette lifting mechanism can also be applied to other types of receiving machines and connected to various types of storage and conveying systems (such as YF12, YF13 and YF14, Various160, COMFLEX-ML, COMFLEX-SL, etc.), and the present invention does not make specific limitations on this.

[0047] like Figure 2 , Figure 3 As shown, the drum-type cigarette lifting mechanism mainly includes at least one first drum 1 and one second drum 2. The first drum 1 is used to introduce cigarettes 100 from the conveying drum 3 into the drum-type cigarette lifting mechanism, and lift the cigarettes 100 to a preset height and then send them into the second drum 2. According to the height difference between the overhead conveyor 4 and the conveying drum 3 of the receiving machine, at least one first drum 1 is arranged between the second drum 2 and the conveying drum 3. The second drum 2 can receive the cigarettes 100 sent by the first drum 1, and further send them into the overhead conveyor 4.

[0048] Reference Figures 2 to 4As shown, the first drum wheel 1 and the second drum wheel 2 are both circumferentially provided with at least two cigarette receiving grooves 111, and the cigarette receiving grooves 111 are arc-bottom straight grooves, which can accommodate and adsorb and fix cigarettes 100, so that the cigarettes 100 can change their positions in the cigarette receiving grooves 111 following the rotation of the first drum wheel 1 and the second drum wheel 2. In addition, the drum-type cigarette lifting mechanism also includes a driving system, which includes at least one first driving gear, each first driving gear is correspondingly connected to a first drum wheel 1 to drive the first drum wheel 1 to rotate, and the number of gears of the first driving gear is 3 times the number of cigarette receiving grooves 111 of the corresponding first drum wheel 1. By making the number of gears of the first driving gear 3 times the number of cigarette receiving grooves 111 of the corresponding first drum wheel 1, the transmission of cigarettes 100 between the first drum wheels 1 can be synchronized and at the same speed, so as to prevent the cigarettes 100 from being stuck or damaged.

[0049] For example, in this embodiment, the vertical distance from the highest position of the conveying drum 3 of the YJ212 receiving machine to the transverse conveyor belt 45 of the overhead conveyor 4 is actually measured to be 1896mm. The number of cigarette receiving grooves 111 on the conveying drum 3 is 54, the center diameter of the circular groove is 324mm, and the module of the cigarette receiving groove 111 is 6mm. The number of teeth of the driving gear used to drive the conveying drum 3 in the YJ212 receiving machine is 162, the gear module is 2mm, and the pitch circle diameter is 324mm. If the technical solution with the same structure as the first drum 1 and the conveying drum 3 is adopted, the lifting needs to adopt 5 first drums 1, plus the conveying drum 3 and the second drum 2, a total of 7 drums for continuous transmission in sequence, the number is large, the transmission chain and the transmission chain are long, and errors are easily accumulated, which is not conducive to the accurate transmission of the cigarettes 100, resulting in low efficiency and easy damage to the cigarettes 100.

[0050] Considering that when the drums are used for transmission, the material transmission amount per unit time of each drum should be equal to the material input amount, and in order to ensure that the material is transferred stably and reliably between the drums, the relative speed between the drums at the junction must be close to zero, that is, the linear speed of the center of the material on the drum is equal. At the same time, each drum must accurately control the material adsorption and release position. When the drum is negatively pressured and can release the cigarette 100, the drum connected to it must be in a state of negative pressure open and able to receive the cigarette 100 at the same time, that is, the negative pressure control phase of the drum must be synchronized, and the cigarette receiving grooves 111 of the two drums are completely aligned when the cigarette 100 is transferred.

[0051] By making the number of gears of the first driving gear three times the number of cigarette receiving grooves 111 of the corresponding first drum wheel 1, the transmission between the first drum wheels 1 can meet the above requirements, thereby meeting the high-speed and high-stability transmission of cigarettes 100, solving the problems of cigarettes 100 falling, cigarettes 100 skewing, shrinking and deformation, and messy cigarettes during operation, and reducing the waste of cigarettes 100, optimizing product quality and equipment efficiency, and effectively improving the automation level of cigarette conveying and storage equipment. For example, in this embodiment, the number of cigarette receiving grooves 111 of each first drum wheel 1 is 78, the center diameter of the circular groove is 468mm, and the number of gears of the corresponding first driving gear is 234. After applying the drum-type cigarette lifting mechanism, the number of shutdowns caused by messy cigarettes is reduced by 13.6 times / shift, the shutdown time is reduced by 11.8min / shift, the emptying of wasted cigarettes 100 is reduced by 654 cigarettes / time, and the number of shrinking cigarettes 100 is reduced by 36 per shift. The decreases were 86.62%, 87.40%, 93.83% and 80% respectively. The effective operation rate of the equipment increased by 0.8 percentage points, and it can easily realize the automatic emptying of 100 cigarettes, avoiding the waste of a large number of 100 cigarettes and saving production costs.

[0052] Furthermore, if Figure 3 As shown, the drum-type cigarette lifting mechanism also includes a negative pressure system, which can form a negative pressure in the cigarette receiving groove 111 to adsorb and fix the cigarette 100. The negative pressure system includes a control component, a servo motor and a fan. The existing fan has a power of 7.5KW, a speed of 7500r / min, and an air volume of 1200m 3 / h, the wind pressure is 0.012MPa (120mbar), and its control mode is open-loop control, without speed regulation function. The motor driving the fan always runs at the rated speed, and the air volume and pressure cannot be increased by speed regulation, which affects the compatibility and stability of the drum-type cigarette lifting mechanism.

[0053] To this end, the original fan is modified, and a servo motor is connected to the fan, and the servo motor drives the fan blades in the fan to rotate to generate negative pressure, and the control component can control the speed of the servo motor. In addition, the control component is connected to the servo motor and the drive system signal at the same time. Under the control of the control component, the speed of the servo motor can increase with the increase of the drive power of the drive system, so that when the cigarette 100 is transmitted at a high speed or the model is changed, the negative pressure can be increased according to the specific cigarette 100 model or the transmission efficiency of the cigarette 100, so as to avoid the phenomenon that the cigarette 100 is thrown out of the cigarette receiving groove 111 due to too small negative pressure, and also make the drum wheel type cigarette lifting mechanism have better compatibility with different models of cigarettes 100.

[0054] Furthermore, if Figure 2 , Figure 3As shown, in this embodiment, there are four first drum wheels 1 and one second drum wheel 2. The second drum wheel 2 and a first drum wheel 1 connected thereto are connected through the same negative pressure pipeline, and the remaining three first drum wheels 1 are connected through another negative pressure pipeline. Each negative pressure pipeline is provided with an independent control valve. By controlling the valve, negative pressure can be connected in batches according to the transfer direction of the cigarette 100. Figure 3 As shown, three negative pressure areas are formed from bottom to top, the bottom negative pressure area is connected to the conveying drum 3, the middle negative pressure area is connected to the three first drums 1 mentioned above, and the top negative pressure area is connected to the second drum 2 and a first drum 1 connected thereto. The bottom negative pressure area adopts the existing control method of the receiving and loading machine, which is not specifically limited in the present invention. The remaining two negative pressure areas can be started one after another, thereby achieving a smooth access to negative pressure.

[0055] For example, in the production start-up phase, when the first cigarette 100 reaches the conveying drum 3, the negative pressure pipes connected to the three first drums 1 can be opened (i.e. Figure 3 When the cigarette 100 enters the last first drum wheel 1 among the three first drum wheels 1, the negative pressure pipe connected to the second drum wheel 2 and the remaining first drum wheel 1 is opened (i.e. Figure 3 In this way, the entire drum-type lifting mechanism is partitioned into negative pressure, which can avoid fluctuations in negative pressure and energy waste during the production startup phase. Of course, in some other embodiments, more regions can be divided and negative pressure can be poured in sequence, which is not specifically limited in the present invention.

[0056] Preferably, the negative pressure system also includes a negative pressure sensor, which is used to detect the negative pressure of the suction hole 112, and the negative pressure sensor signal is connected to the control component, so as to realize the detection of real-time negative pressure, ensure that the control of the servo motor transfer can meet the requirements of generating the set negative pressure, realize closed-loop control, and ensure that the cigarette 100 is transferred smoothly and stably between the drum wheels. Exemplarily, the servo motor adopts a SIMOTION servo motor, and the signal is connected to a SIMOTION D455 controller, which can compare the collected real-time negative pressure with the set negative pressure. If there is a difference, the speed of the servo motor can be changed through PI adjustment, so that the negative pressure in the cigarette receiving groove 111 meets the requirements of stable adsorption, and the smooth handover and transfer of the cigarette 100 between the drum wheels is guaranteed.

[0057] like Figure 3 , Figure 4As shown, in this embodiment, on the drum wheel, the smoke receiving groove 111 rotated to a preset angle has negative pressure, which can absorb the cigarette 100, and the smoke receiving groove 111 rotated outside the preset angle has no negative pressure, so that the cigarette 100 can be transferred from the smoke receiving groove 111 without negative pressure to the smoke receiving groove 111 with negative pressure.

[0058] Specifically, Figure 4 As shown, the first drum wheel 1 includes a first wheel body 11 and a first gas distribution seat 12. The first wheel body 11 is rotatably mounted on the first gas distribution seat 12. The outer circumferential surface of the first wheel body 11 is provided with smoke receiving grooves 111, and along the length direction of the smoke receiving grooves 111, each smoke receiving groove 111 is provided with at least two air suction holes 112. The negative pressure system is connected to the air suction holes 112, so that the cigarette 100 is adsorbed and fixed when it is rotated to a preset angle.

[0059] Continue to refer to Figure 4 As shown, the first gas distribution seat 12 has a first hollow inner cavity, and the first hollow inner cavity is connected to a negative pressure system capable of generating negative pressure air. Along the circumferential direction of the first gas distribution seat 12, a first gas distribution groove 121 is partially provided on the outer peripheral surface of the first gas distribution seat 12. In this embodiment, the central angle of the first gas distribution groove 121 on the first gas distribution seat 12 is α, and the air suction holes 112 located within the range of the central angle α on the first wheel body 11 can be connected to the first hollow inner cavity through the first gas distribution groove 121, while the air suction holes 112 located outside the range of the central angle α are isolated from the first hollow inner cavity. In this way, when the first wheel body 11 rotates, only the cigarette holding groove 111 within the preset angle (i.e., the central angle α) can adsorb and fix the cigarette 100. By setting appropriate preset angles for each first drum wheel 1, the cigarette 100 can be stably adsorbed and fixed on the first drum wheel 1, and move into the smoke receiving groove 111 with negative pressure at the junction of the two first drum wheels 1, thereby achieving orderly transportation of the cigarette 100 between two adjacent first drum wheels 1.

[0060] Preferably, if Figure 4 As shown, the first air distribution seat 12 is further provided with a blowing hole 122 , and the blowing hole 122 is used to input compressed air into the first hollow inner cavity and the air suction hole 112 for blowing, so as to clean the first hollow inner cavity and the air suction hole 112 .

[0061] Continue to refer to Figure 4As shown, in this embodiment, the first drum 1 further includes a connecting screw 13, an end cover 14 and a flange cover 15, the first driving gear is connected to a drum shaft flange 16, and the drum shaft flange 16, the flange cover 15, the end cover 14 and the first wheel body 11 are sequentially connected and arranged through the connecting screw 13. Preferably, the end cover 14 is provided with a long hole 141, and the connecting screw 13 is position-adjustably arranged through the long hole 141 and connected to the flange cover 15, so that the position between the flange cover 15 and the end cover 14 is adjustable. By adjusting the position of the connecting screw 13 passing through the long hole 141, the relative position between the drums can be conveniently adjusted, thereby achieving stable and rapid transmission of the cigarettes 100.

[0062] Similar to the first drum 1, the number of the smoke receiving grooves 111 on the second drum 2 is also preferably set in a specific manner. Exemplarily, the drive system includes a second drive gear, which is transmission-connected to the second drum 2 to drive the second drum 2 to rotate, and the number of gears of the second drive gear is three times the number of the smoke receiving grooves 111 of the second drum 2. Exemplarily, in this embodiment, the number of the smoke receiving grooves 111 of the second drum 2 is 48, the number of gears of the second drive gear is 144, the module of the smoke receiving grooves 111 is also 6 mm, and the center diameter of the circular groove is 288 mm. In this way, stable and high-speed transmission of cigarettes 100 can also be achieved between the first drum 1 and the second drum 2.

[0063] Specifically, Figure 5 , Figure 6 As shown, the second drum 2 is also provided with an elastic guide plate 41, a concave arc plate 42, a floating steel mesh belt 43, a polytetrafluoroethylene guide sheet 44 and a conveyor belt 45, and a stacking and conveying space with a cigarette flow is defined between the elastic guide plate 41, the concave arc plate 42, the floating steel mesh belt 43, the polytetrafluoroethylene guide sheet 44 and the conveyor belt 45. The second drum 2 feeds the cigarettes 100 one by one onto the horizontally arranged conveyor belt 45, and the elastic guide plate 41, the concave arc plate 42, the floating steel mesh belt 43 and the polytetrafluoroethylene guide sheet 44 can play a guiding and accommodating role, and can adaptively change the size of the stacking and conveying space according to the number of cigarettes 100, so as to avoid the phenomenon of blockage and jamming. Preferably, a material level detector is also provided at the second drum wheel 2, and the material level detector is connected to the motor signal for driving the conveyor belt 45, so that the rotation speed of the conveyor belt 45 can be adjusted according to the real-time height of the material level to keep the material level relatively constant, so that the output of the cigarettes 100 is soft, the operation is stable, and the failure rate is low, which helps to improve the quality of the outer tubes of the cigarettes 100 and the efficiency of the equipment.

[0064] More specifically, if Figure 6As shown, similar to the first drum wheel 1, the second drum wheel 2 also includes a second wheel body 21 and a second gas distribution seat 22. The outer circumferential surface of the second wheel body 21 is arranged with smoke receiving grooves 111, and at least two air suction holes 112 are arranged in each smoke receiving groove 111 along the length direction of the smoke receiving groove 111. The second wheel body 21 is rotatably sleeved on the second gas distribution seat 22, and the second gas distribution seat 22 has a second hollow inner cavity and a second gas distribution groove 221. The second gas distribution seat 22 has a second hollow inner cavity, and the second hollow inner cavity is connected to a negative pressure system capable of generating negative pressure, and along the circumferential direction of the second gas distribution seat 22, the outer circumferential surface of the second gas distribution seat 22 is partially provided with a second gas distribution groove 221, and the second hollow inner cavity is connected to a part of the air suction holes 112 on the second wheel body 21 that are rotated to a preset angle relative to the second gas distribution seat 22 through the second gas distribution groove 221.

[0065] Optionally, the second air distribution seat 22 is also provided with a blowing hole 122 , so as to facilitate the input of compressed air into the second air distribution seat 22 through the blowing hole 122 , thereby achieving cleaning of the second hollow inner cavity and the air suction hole 112 on the second wheel body 21 .

[0066] Preferably, along the rotation direction of the second wheel body 21, the width of the end of the second gas distribution groove 221 is gradually reduced. Figure 6 As shown, the end of the second air distribution groove 221 is arranged in a V shape, and the air suction holes 112 on the second wheel body 21 are also arranged in a V shape, and multiple groups of air suction holes 112 are formed along the circumferential direction on the second wheel body 21. During the rotation process, when the V-shaped inner tangent line of a group of air suction holes 112 (such as Figure 6 When the second gas distribution groove 221 moves from the inside of the V-shaped contour to the outside of the V-shaped contour (as shown by the line A in the middle), the negative pressure in the group of suction holes 112 will be closed, so that multiple cigarettes 100 can fall from different heights and fall onto the conveyor belt 45 under the guidance of the elastic guide plate 41 and the concave arc plate 42, and are stacked to form multiple layers of cigarettes 100 for transportation.

[0067] It should be noted that, in the present embodiment, the first drum 1 and the second drum 2 are preferably arranged in a wave shape, so as to facilitate assembly, disassembly, adjustment and maintenance. Correspondingly, the first drive gear and the second drive gear included in the drive system are also arranged in a wave shape. Since the drive system of the drum-type cigarette lifting mechanism only needs to provide power for the transmission of the cigarettes 100 and has no other load requirements, it can be directly connected to the transmission wheel of the loader by gears to introduce power. Preferably, the transmission connection between the drive system and the loader is provided with an overload clutch. If an abnormal load occurs in the drive system (for example, a foreign object is sandwiched between the two drums), the overload clutch can be disengaged and shut down to ensure the safety and structural integrity of the drive system and the loader.

[0068] The present invention also provides a design method for a drum-type cigarette lifting mechanism, which is used to specifically guide the design of the above-mentioned drum-type cigarette lifting mechanism. Specifically, it includes:

[0069] The number of the smoke receiving grooves 111 of the first drum wheel 1 in the drum-wheel type cigarette lifting mechanism is set to one third of the number of gears of the first driving gear transmission connected thereto; or, the number of gears of the first driving gear in the drum-wheel type cigarette lifting mechanism is set to three times the number of the smoke receiving grooves 111 of the first drum wheel 1 transmission connected thereto.

[0070] It should be noted that, during the design process, according to actual production needs, for example, in order to give priority to improving efficiency, the number of smoke receiving grooves 111 may be determined first, and then the number of gears corresponding to the first driving gear may be designed according to the number of smoke receiving grooves 111. Alternatively, according to the rotation speed, noise, service life and other restrictions of the first driving gear, the parameters of the gears of the first driving gear may be determined first, and then the number of smoke receiving grooves 111 corresponding to the first drum wheel 1 may be designed according to the number of teeth.

[0071] Through the above-mentioned design method, the material transmission amount of each drum wheel per unit time can be equal to the material input amount, the relative speed between the drum wheels at the intersection approaches zero, and the cigarette receiving grooves 111 of the two drum wheels are completely aligned when the cigarettes 100 are handed over, ensuring that the drum wheels hand over materials stably and reliably, thereby enabling the drum-type cigarette lifting mechanism to achieve fast and reliable lifting of cigarettes 100 through the drum wheels.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A drum-type cigarette lifting mechanism, used to dock with the conveying drum (3), It is characterized in that The invention comprises at least one first drum wheel (1) and one second drum wheel (2), wherein the first drum wheel (1) and the second drum wheel (2) are both circumferentially provided with at least two smoke receiving grooves (111), wherein the smoke receiving grooves (111) are used to accommodate and adsorb and fix cigarettes (100), the first drum wheel (1) is used to guide the cigarettes (100) into the drum-type cigarette lifting mechanism and lift them to a preset height, the at least one first drum wheel (1) is arranged between the conveying drum wheel (3) and the second drum wheel (2), the second drum wheel (2) is used to convey the cigarettes (100) to an overhead conveyor (4), and, The drum-type cigarette lifting mechanism also includes a driving system, the driving system includes at least one first driving gear, each of the first driving gears is correspondingly connected to one of the first drum wheels (1) to drive the first drum wheel (1) to rotate, and the number of gears of the first driving gears is three times the number of the cigarette receiving grooves (111) of the corresponding first drum wheel (1).

2. The drum-type cigarette lifting mechanism according to claim 1, It is characterized in that The first drum wheel (1) comprises a first wheel body (11), the outer circumferential surface of the first wheel body (11) being arranged with the smoke receiving grooves (111), and at least two air suction holes (112) are arranged in each of the smoke receiving grooves (111) along the length direction of the smoke receiving grooves (111), and the air suction holes (112) are used for adsorbing and fixing the cigarette (100).

3. The drum-type cigarette lifting mechanism according to claim 2, It is characterized in that The first drum wheel (1) further comprises a first gas distribution seat (12), and the first wheel body (11) is rotatably mounted on the first gas distribution seat (12). The first air distribution seat (12) has a first hollow inner cavity, the first hollow inner cavity is connected to a negative pressure system capable of generating negative pressure, and a first air distribution groove (121) is partially provided on the outer peripheral surface of the first air distribution seat (12) along the circumferential direction of the first air distribution seat (12), and the first hollow inner cavity is connected to the air suction hole (112) on the first wheel body (11) that is rotated to a preset angle relative to the first air distribution seat (12) through the first air distribution groove (121).

4. The drum-type cigarette lifting mechanism according to claim 3, It is characterized in that The first air distribution seat (12) is also provided with an air blowing hole (122), and the air blowing hole (122) is used to blow air into the first hollow inner cavity and the air suction hole (112) for cleaning.

5. The drum-type cigarette lifting mechanism according to claim 3, It is characterized in that The first drum (1) further comprises a connecting screw (13), an end cover (14) and a flange cover (15); the first driving gear is connected to a drum shaft flange (16); the drum shaft flange (16), the flange cover (15), the end cover (14) and the first wheel body (11) are sequentially connected via the connecting screw (13); The end cover (14) is provided with a long hole (141), and the connecting screw (13) is adjustably inserted into the long hole (141) and connected to the flange cover (15), so that the position between the flange cover (15) and the end cover (14) is adjustable.

6. The drum-type cigarette lifting mechanism according to claim 5, It is characterized in that The driving system comprises a second driving gear, the second driving gear is drivingly connected to the second drum (2) to drive the second drum (2) to rotate, and The number of gears of the second driving gear is three times the number of the smoke receiving grooves (111) of the second drum wheel (2).

7. The drum-type cigarette lifting mechanism according to claim 6, It is characterized in that The second drum wheel (2) comprises a second wheel body (21) and a second gas distribution seat (22); the outer peripheral surface of the second wheel body (21) is provided with the smoke receiving grooves (111) arranged in an array; and along the length direction of the smoke receiving grooves (111), each of the smoke receiving grooves (111) is provided with at least two air suction holes (112); The second wheel body (21) is rotatably sleeved on the second gas distribution seat (22); the second gas distribution seat (22) has a second hollow inner cavity and a second gas distribution groove (221); the second hollow inner cavity is connected to the negative pressure system capable of generating negative pressure, and the second gas distribution groove (221) is partially provided on the outer peripheral surface of the second gas distribution seat (22) along the circumferential direction of the second gas distribution seat (22); the second hollow inner cavity is connected to the suction hole (112) on the second wheel body (21) that is rotated to a preset angle relative to the second gas distribution seat (22) through the second gas distribution groove (221).

8. The drum-type cigarette lifting mechanism according to claim 7, It is characterized in that Along the rotation direction of the second wheel body (21), the width of the end of the second gas distribution groove (221) is gradually reduced.

9. The drum-type cigarette lifting mechanism according to claim 3 or 7, It is characterized in that The negative pressure system includes a control component and a servo motor, the servo motor is used to generate negative pressure, and the control component is signal-connected to the drive system and the servo motor so that the negative pressure value generated by the servo motor can increase with the increase of the drive power of the drive system.

10. A method for designing a drum-type cigarette lifting mechanism, used for designing a drum-type cigarette lifting mechanism as claimed in any one of claims 1 to 9, It is characterized in that include: The number of cigarette receiving grooves (111) of the first drum wheel (1) in the drum wheel type cigarette lifting mechanism is set to one third of the number of gears of the first driving gear transmission-connected thereto; or The number of gears of the first driving gear in the drum-type cigarette lifting mechanism is set to be three times the number of cigarette receiving grooves (111) of the first drum (1) connected thereto.

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