Rod-shaped material conveying drum wheel, expanding drum wheel set and tobacco processing equipment

Abstract

The invention provides a rod-shaped material conveying drum wheel. The rod-shaped material conveying drum wheel comprises a rotating shaft, a drum wheel body and an air distribution seat, a plurality of containing grooves are formed in the peripheral surface of the drum wheel body, each containing groove comprises a first containing unit and a second containing unit, the first containing units and the second containing units are used for containing rod-shaped materials correspondingly, and the directions, used for conveying the rod-shaped materials, of the first containing units and the second containing units are opposite. One containing unit is used for receiving the rod-shaped materials sent out from the upstream drum wheel, and the other containing unit is used for sending back the rod-shaped materials; the air distribution seat is arranged in the drum wheel body, and an air distribution groove is formed in the air distribution seat; a first cavity and a second cavity are formed in the positions, corresponding to the air distribution grooves, of the drum wheel body, the first cavity is correspondingly formed in the first containing unit, and the second cavity is correspondingly formed in the second containing unit. Meanwhile, the invention further provides an expansion drum wheel set and tobacco processing equipment. Compared with the prior art, the rod-shaped material conveying drum wheel can circularly convey rod-shaped materials.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco machinery, and particularly relates to a rod-shaped material conveying drum, an extended drum set and a tobacco processing device. Background Art

[0002] In recent years, with the increasing opening of the market and the intensification of competition, the tobacco product market has been continuously developing. Consumers' demands are becoming more and more diverse, and the requirements for cigarette quality are also getting higher and higher. Therefore, major cigarette enterprises are constantly pursuing higher cigarette quality and personalized and diverse cigarette category specifications, resulting in new functional requirements for tobacco processing equipment (for example, new cigarette quality inspection items need to be added, such as pop bead inspection, end face inspection, shape inspection, etc.).

[0003] With the increase of various functional requirements, corresponding functional structures need to be installed on tobacco processing equipment, and adding functional structures requires adding corresponding drums to the tobacco processing equipment. However, with the gradual increase of functional requirements, it has become increasingly difficult to find positions to install these functional structures and drums on current tobacco processing equipment.

[0004] The drums of current tobacco processing equipment all convey rod-shaped materials in a single direction, and adding functional structures requires adding drums along the transmission direction of the equipment. The layout of tobacco processing equipment usually adopts a horizontal layout method. This installation method will continuously increase the number of drums, resulting in the tobacco processing equipment becoming longer and longer, occupying more and more land area, having low space utilization rate, and the structure becoming more and more complex. In some production workshops with limited space, it is even impossible to install the corresponding drums, thus making the tobacco processing equipment unable to meet the corresponding functional requirements. Summary of the Invention

[0005] Aiming at the technical problem that the drums in the prior art usually can only convey rod-shaped materials in a single direction, and when adding corresponding functional structures, the number of drums needs to be gradually increased in the conveying direction of the drums, resulting in the tobacco processing equipment having an increasingly large floor area, low space utilization rate, and a more and more complex structure. The present invention provides a rod-shaped material conveying drum, which can realize the circular conveying of rod-shaped materials, can send out the rod-shaped materials and also send them back, and can realize the formation of a closed-loop path for the transfer of rod-shaped materials, so that the rod-shaped material conveying drum can be set at any position on the tobacco processing equipment, thereby better utilizing the space in the tobacco processing equipment and being more conducive to the layout of functional structures.

[0006] A rod-shaped material conveying drum includes a rotating shaft, a drum body, and a gas distribution seat; The rotating shaft is connected to the drum body; A plurality of receiving grooves are formed on the outer peripheral surface of the drum body. The receiving grooves include a first receiving unit and a second receiving unit. The first receiving unit and the second receiving unit are respectively used for receiving rod-shaped materials. The first receiving unit and the second receiving unit are used to transfer the rod-shaped materials in opposite directions. One receiving unit is used to pick up the rod-shaped materials sent from the upstream drum, and the other receiving unit is used to send the rod-shaped materials back. The air distribution seat is arranged inside the drum body, and an air distribution groove is formed on the air distribution seat. A first cavity and a second cavity are arranged on the drum body corresponding to the air distribution groove. The first cavity is correspondingly formed in the first receiving unit, and the second cavity is correspondingly formed in the second receiving unit.

[0007] Preferably, the first receiving unit and the second receiving unit in the same receiving groove are arranged in sequence along the circumferential direction, and when the drum body rotates, the first receiving unit is located in front of the second receiving unit.

[0008] Preferably, the air distribution groove includes a first air distribution groove and a second air distribution groove. The first air distribution groove and the second air distribution groove are axially offset and circumferentially misaligned. The first cavity corresponds to the first air distribution groove axially. The second cavity corresponds to the second air distribution groove axially.

[0009] Preferably, along the axial direction, a plurality of the first air distribution grooves and the second air distribution grooves are respectively arranged, and a second air distribution groove is arranged between two adjacent first air distribution grooves, and a first air distribution groove is arranged between two adjacent second air distribution grooves. A plurality of the first cavities are sequentially formed in the first receiving unit along the axial direction, and one first cavity corresponds to one first air distribution groove. A plurality of the second cavities are sequentially formed in the second receiving unit along the axial direction, and one second cavity corresponds to one second air distribution groove.

[0010] An extended drum group includes an initial drum, an intermediate drum, a return drum and a dialing rod mechanism. The initial drum, the intermediate drum and the return drum all adopt the structure of the rod-shaped material conveying drum as described in any one of the above, and adjacent two drums are docked through the receiving unit to transfer the rod-shaped materials. The intermediate drum is located between the initial drum and the return drum, and is used to reciprocally transfer the rod-shaped materials between the initial drum and the return drum. The stick pushing mechanism is arranged on one side of the return drum to push the rod-shaped materials in the receiving grooves of the return drum, so as to switch the rod-shaped materials in the receiving grooves from one receiving unit to another.

[0011] Preferably, the groove width of the receiving groove is greater than twice the diameter of the rod-shaped material; In the same receiving groove of the return drum, along the circumferential direction, the first receiving unit is located on one side of the receiving groove, and the second receiving unit is located on the other side of the receiving groove; and when the return drum rotates, the first receiving unit in the same receiving groove is located in front of the second receiving unit. The stick pushing mechanism is used to push the rod-shaped materials in the first receiving unit into the second receiving unit.

[0012] Preferably, the stick pushing mechanism is a stick pushing roller, and the surface of the stick pushing roller for contacting the rod-shaped material is provided with uniform first strip-shaped protrusions; The bottom surface of the receiving groove of the return drum is provided with uniform second strip-shaped protrusions.

[0013] Preferably, the receiving units between adjacent drums are butt-jointed in a staggered manner.

[0014] Preferably, each drum is driven by an independent servo motor.

[0015] A tobacco processing device is provided with an extended drum group as described in any one of the above.

[0016] Compared with the prior art, the rod-shaped material conveying drum provided by the present invention includes a rotating shaft, a drum body, and a gas distribution seat; the rotating shaft is connected to the drum body; a plurality of receiving grooves are formed on the outer peripheral surface of the drum body, and the receiving grooves include a first receiving unit and a second receiving unit. The first receiving unit and the second receiving unit are respectively used for receiving rod-shaped materials, and the directions for transferring the rod-shaped materials by the first receiving unit and the second receiving unit are opposite. One receiving unit is used for picking up the rod-shaped materials sent out from the upstream drum, and the other receiving unit is used for sending the rod-shaped materials back; the gas distribution seat is arranged inside the drum body, and a gas distribution groove is formed on the gas distribution seat; a first cavity and a second cavity are arranged on the drum body corresponding to the gas distribution groove, the first cavity is correspondingly formed in the first receiving unit, and the second cavity is correspondingly formed in the second receiving unit. The first receiving unit and the second receiving unit are arranged in the rod-shaped material conveying drum. The rod-shaped materials are respectively received by the two receiving units. When the drum rotates, one receiving unit can transfer the rod-shaped materials to the rear side, and the other can transfer the rod-shaped materials to the front side, so that the rod-shaped materials can be transferred bidirectionally, realizing the circulating flow of the rod-shaped materials, enabling the rod-shaped material conveying drum to be arranged at any position on the tobacco processing equipment, thereby making better use of the available space in the tobacco processing equipment and being more conducive to the layout of functional structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 FIG. 9 is a schematic three-dimensional structure diagram of the docking of the extended drum group provided by an embodiment with a tobacco processing device; Figure 2 For Figure 1 FIG. 14 is a schematic diagram of the transfer direction of the rod-shaped material when the structure shown transfers the rod-shaped material; Figure 3 For Figure 1 FIG. 19 is an exploded structure diagram of the partial structure shown; Figure 4 For Figure 1 FIG. 24 is an exploded structure diagram of the partial structure shown; Figure 5 For Figure 1 FIG. 29 is an exploded structure diagram of the partial structure shown; Figure 6 FIG. 32 is a schematic three-dimensional structure diagram of the gas distribution seat provided by another embodiment; Figure 7 For Figure 6 a schematic three-dimensional structure view of the gas distribution seat shown from another angle; Figure 8 a schematic three-dimensional structure view of the drum body provided by another embodiment; Figure 9 For Figure 8 a schematic plan structure view of the gas distribution groove in the drum body shown after being flattened; Figure 10 a schematic structure view of the docking part between the return drum and the dial rod mechanism in one embodiment; Figure 11 a schematic structure view of the receiving groove of the return drum in one embodiment. Detailed implementation manners

[0019] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.

[0020] It should be noted that when a component is referred to as being "fixed to", "installed on" or "disposed on" another component, it can be directly on the other component or indirectly disposed on the other component; when a component is "connected" to another component, or a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0021] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, the meanings of "a plurality" and "several" are two or more, unless otherwise specifically and clearly defined.

[0023] It should be noted that the structures, proportions, sizes, etc. shown in the attached drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of this application. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the efficacy that this application can produce and the purpose that can be achieved, should still fall within the scope covered by the technical content disclosed in this application.

[0024] The present invention provides a rod-shaped material conveying drum, which includes a rotating shaft, a drum body, and an air distribution seat; the rotating shaft is connected to the drum body; a plurality of receiving grooves are formed on the outer peripheral surface of the drum body, and the receiving grooves include a first receiving unit and a second receiving unit. The first receiving unit and the second receiving unit are respectively used to receive rod-shaped materials, and the directions for the first receiving unit and the second receiving unit to transfer the rod-shaped materials are opposite. One receiving unit is used to pick up the rod-shaped materials sent from the upstream drum, and the other receiving unit is used to send the rod-shaped materials back; the air distribution seat is arranged inside the drum body, and an air distribution groove is formed on the air distribution seat; a first cavity and a second cavity are arranged on the drum body corresponding to the air distribution groove. The first cavity is correspondingly opened in the first receiving unit, and the second cavity is correspondingly opened in the second receiving unit. The first receiving unit and the second receiving unit are arranged in the rod-shaped material conveying drum. By using the two receiving units to receive the rod-shaped materials respectively, when the drum rotates, one receiving unit can transfer the rod-shaped materials to the rear side, and the other can transfer the rod-shaped materials to the front side, so that the rod-shaped materials can be transferred in both directions, realizing the circular flow of the rod-shaped materials, enabling the rod-shaped material conveying drum to be arranged at any position on the tobacco processing equipment, thereby making better use of the available space in the tobacco processing equipment and being more conducive to the arrangement of functional structures.

[0025] Please refer to Figures 1 to 11 , in an embodiment, a rod-shaped material conveying drum 100 is provided, which is mainly used to solve the problem in the prior art that when adding a drum, it can only be added along the conveying direction of the equipment, resulting in low space utilization rate and an increase in the overall length of the equipment.

[0026] The rod-shaped material conveying drum 100 includes a rotating shaft 10, a drum body 20, and a gas distribution seat 30. The rotating shaft 10 and the hub body 20 are used to drive the hub body 20 to rotate. A plurality of receiving grooves 21 are formed on the outer peripheral surface of the hub body 20, and the receiving grooves 21 are mainly used for receiving rod-shaped materials. The receiving groove 21 includes a first receiving unit 211 and a second receiving unit 212, and the first receiving unit 211 and the second receiving unit 212 are respectively used for receiving rod-shaped materials. That is to say, two positions for receiving rod-shaped materials are provided in one receiving groove 21 (one is the first receiving unit 211 and the other is the second receiving unit 212).

[0027] The first receiving unit 211 and the second receiving unit 212 are used to transfer rod-shaped materials in opposite directions. One receiving unit is used to pick up the rod-shaped materials sent out by the upstream drum, and the other receiving unit is used to send the rod-shaped materials back. That is to say, the first receiving unit 211 and the second receiving unit 212 are used to transfer rod-shaped materials in two opposite directions. For example, when the rod-shaped material conveying drum 100 is arranged between two drums for transferring rod-shaped materials, the first receiving unit 211 can be used to pick up the rod-shaped materials sent out by the upstream (or downstream) drum and transfer the rod-shaped materials to the downstream (or upstream) drum; while the second receiving unit 212 can be used to pick up the rod-shaped materials sent out by the downstream (or upstream) drum and transfer the rod-shaped materials to the upstream (or downstream) drum. As Figure 2 shown in the initial drum 101, which adopts the structure of the rod-shaped material conveying drum 100. The initial drum 101 rotates counterclockwise. The initial drum 101 picks up the rod-shaped materials sent out by the upstream transition drum 200 through the first receiving unit 211, and then transfers the rod-shaped materials to the downstream intermediate drum 102 as the initial drum 101 rotates; while the rod-shaped materials sent back from the intermediate drum 102 are picked up through the second receiving unit 212, and then transferred to the upstream initial drum 101 as the initial drum 101 rotates, so as to realize the cyclic transfer of rod-shaped materials through one drum.

[0028] In addition, when the rod-shaped material conveying drum 100 is arranged at the far downstream of the wheel set, the first receiving unit 211 is used to pick up the rod-shaped materials from the upstream drum, and the second receiving unit 212 is used to send the rod-shaped materials back to the upstream drum. As Figure 2The return drum 103 shown adopts the structure of the rod-shaped material conveying drum 100. The return drum 103 rotates counterclockwise, and the return drum 103 receives the rod-shaped material sent out by the upstream intermediate drum 102 through the first accommodating unit 211. Then, as the return drum 103 rotates, the rod-shaped material is driven to move to the rod-shifting mechanism 104. The rod-shaped material is shifted from the first accommodating unit 211 to the second accommodating unit 212 through the rod-shifting mechanism 104. As the return drum 103 continues to rotate, the rod-shaped material is sent back to the intermediate drum 102.

[0029] The gas distribution seat 30 is disposed in the drum body 20, and a gas distribution groove 31 is provided on the gas distribution seat 30. The gas distribution seat 30 is mainly used for an external negative pressure system, and provides negative pressure to the containing groove 21 through the external negative pressure, so that when the drum body 20 rotates, the rod-shaped material is stably adsorbed at the corresponding position in the containing groove 21 through the negative pressure.

[0030] The hub wheel body 20 is provided with a first cavity 22 and a second cavity 23 at the position corresponding to the gas distribution groove 31. The first cavity 22 is correspondingly opened in the first accommodating unit 211, and the second cavity 23 is correspondingly opened in the second accommodating unit 212. Through the cooperation of the first cavity 22 and the gas distribution groove 31, when the gas distribution seat 30 is externally connected to negative pressure, negative pressure can be formed in the first accommodating unit 211 to stably adsorb the rod-shaped material, so that when the drum wheel body 20 rotates to transfer the rod-shaped material, the rod-shaped material will not fall easily. Through the cooperation of the second cavity 23 and the gas distribution groove 31, when the gas distribution seat 30 is externally connected to negative pressure, negative pressure can be formed in the second accommodating unit 212 to stably adsorb the rod-shaped material, so that when the hub wheel body 20 rotates to transfer the rod-shaped material, the rod-shaped material will not fall easily.

[0031] It is understandable that the drum wheel in the prior art can usually only transfer the rod-shaped materials in one direction, resulting in that when the drum wheel is installed on the equipment, the drum wheel can only be installed along the original conveying direction of the equipment, making the overall equipment longer after the installation. As the pursuit of cigarette quality, personalization, and diversification continues to increase, new functional requirements have been added to tobacco processing equipment. With the increase of various functional requirements, corresponding functional structures need to be installed on tobacco processing equipment, and adding functional structures requires the installation of corresponding drum wheels on tobacco processing equipment. The layout of tobacco processing equipment usually adopts a horizontal layout. This installation method will continue to add drum wheels, resulting in the tobacco processing equipment becoming longer and longer, occupying a larger and larger area, low space utilization, and more and more complex structure. In some production workshops with limited space, it is even impossible to install the corresponding drum wheel, so that the tobacco processing equipment cannot meet the corresponding functional requirements.

[0032] The rod-shaped material conveying drum 100 provided in this embodiment can realize the reciprocating cyclic conveying of rod-shaped materials. Therefore, the rod-shaped material conveying drum 100 can be installed at the required positions on the equipment according to actual needs, without being limited only to the conveying direction of the equipment, which can make better use of the available space in the tobacco processing equipment and more flexibly select positions to install the rod-shaped material conveying drum 100, which is more conducive to the layout of functional structures. For example, when a drum needs to be installed in a horizontally arranged tobacco processing equipment, the rod-shaped material conveying drum 100 can be vertically installed in the tobacco processing equipment to make more full use of the vertical space and avoid the tobacco processing equipment from becoming longer and longer. In addition, the rod-shaped material conveying drum 100 respectively accommodates rod-shaped materials through the first accommodating unit 211 and the second accommodating unit 212, and in the handover of rod-shaped materials, mutual interference can also be better avoided to ensure the stability of the transfer of rod-shaped materials.

[0033] Preferably, in one embodiment, the first accommodating unit 211 and the second accommodating unit 212 in the same accommodating groove 21 are arranged in sequence along the circumferential direction, and when the drum body 20 rotates, the first accommodating unit 211 is located in front of the second accommodating unit 212. That is to say, in this embodiment, the first accommodating unit 211 and the second accommodating unit 212 are distributed along the circumferential direction of the drum body 20, and when the drum body 20 rotates, in the same accommodating groove 21, the first accommodating unit 211 is relatively located in the front side, and the second accommodating unit 212 is relatively located in the rear side, so as to realize the staggered distribution of the first accommodating unit 211 and the second accommodating unit 212. Of course, in other embodiments, the staggered distribution of the first accommodating unit 211 and the second accommodating unit 212 can also adopt other structural forms, such as the first accommodating unit 211 and the second accommodating unit 212 being staggered along the axial direction. In this embodiment, the form of circumferential staggered distribution can make the overall structure simpler, and at the same time make the structure for subsequent docking and use with the rod-shaped material conveying drum 100 simpler.

[0034] In one embodiment, in order to make the handover of rod-shaped materials smoother, the opening position of the air distribution groove 31 can be designed, so that when the first accommodating unit 211 (or the second accommodating unit 212) rotates to the docking position, the negative pressure in the first accommodating unit 211 (or the second accommodating unit 212) is lost, so as to facilitate the outflow of rod-shaped materials from the first accommodating unit 211 (or the second accommodating unit 212).

[0035] Preferably, in one embodiment, the air distribution groove 31 includes a first air distribution groove 311 and a second air distribution groove 312. The first air distribution groove 311 and the second air distribution groove 312 are axially offset and circumferentially misaligned. The first cavity 22 corresponds to the first air distribution groove 311 axially, and the second cavity 23 corresponds to the second air distribution groove 312 axially. That is to say, in this embodiment, the first air distribution groove 311 is dedicated to distributing air to the first cavity 22, so as to provide a negative pressure adsorption environment for the first receiving unit 211. The second air distribution groove 312 is dedicated to distributing air to the second cavity 23, so as to provide a negative pressure adsorption environment for the second receiving unit 212. In the axial direction of the air distribution seat 30, the first air distribution groove 311 and the second air distribution groove 312 are spaced apart from each other. And in the circumferential direction of the air distribution seat 30, the first air distribution groove 311 and the second air distribution groove 312 are misaligned and are arranged at an angle to each other. For example, in the embodiment shown in Figure 2 , in the initial drum 101, the first air distribution groove 311 is mainly distributed in the lower area of the initial drum 101, while the second air distribution groove 312 is mainly distributed in the upper area of the initial drum 101. Thus, when the first receiving unit 211 of the initial drum 101 picks up the rod-shaped material from the transition drum 200, when the first receiving unit 211 rotates and transports along the lower area, through the cooperation of the first air distribution groove 311 and the first cavity 22, negative pressure can be continuously provided to adsorb the rod-shaped material. And when the second receiving unit 212 of the initial drum 101 picks up the rod-shaped material from the intermediate drum 102, when the second receiving unit 212 rotates and transports along the upper area, through the cooperation of the second air distribution groove 312 and the second cavity 23, negative pressure can be continuously provided to adsorb the rod-shaped material. By adopting this structural form, the stability of the transportation of the rod-shaped material can be improved, so that the first receiving unit 211 only forms strong negative pressure in the required transportation area, and the second receiving unit 212 only forms strong negative pressure in the required transportation area, avoiding mutual interference.

[0036] Preferably, in one embodiment, along the axial direction, a plurality of the first gas distribution grooves 311 and the second gas distribution grooves 312 are respectively provided, and one second gas distribution groove 312 is provided between two adjacent first gas distribution grooves 311, and one first gas distribution groove 311 is provided between two adjacent second gas distribution grooves 312. A plurality of the first cavities 22 are sequentially formed in the first accommodation unit 211 along the axial direction, and one first cavity 22 corresponds to one first gas distribution groove 311. A plurality of second cavities 23 are sequentially formed in the second accommodation unit 212 along the axial direction, and one second cavity 23 corresponds to one second gas distribution groove 312. With this structure, negative pressure can be present at multiple positions along the axial direction in the first accommodation unit 211, so that the rod-shaped material can be adsorbed more stably, the stability during the conveying process is improved, and the accidental dropping of the rod-shaped material is avoided. At the same time, negative pressure can be present at multiple positions along the axial direction in the second accommodation unit 212, and the rod-shaped material can also be adsorbed more stably, the stability during the conveying process is improved, and the accidental dropping of the rod-shaped material is avoided.

[0037] Specifically, in one embodiment, along the axial direction, three first gas distribution grooves 311 are provided, and three second gas distribution grooves 312 are provided, and the three first gas distribution grooves 311 and the three second gas distribution grooves 312 are alternately distributed in sequence.

[0038] Specifically, in one embodiment, the rod-shaped material conveying hub wheel 100 further includes a bearing seat 40, the rotating shaft 10 is connected to the bearing seat 40 through a bearing, and an end cover 50 is provided at the end of the rotating shaft 10.

[0039] Meanwhile, in one embodiment, an extended drum set 1000 is also provided, which includes an initial drum 101, an intermediate drum 102, a return drum 103, and a rod-pushing mechanism 104. The initial drum 101, the intermediate drum 102, and the return drum 103 all adopt the structure of the rod-shaped material conveying drum 100, that is, there are two accommodating units in each of the initial drum 101, the intermediate drum 102, and the return drum 103. Adjacent drums are docked through the accommodating units (that is, the first accommodating unit 211 of one drum and the second accommodating unit 212 of another drum, or the first accommodating unit 211 of one drum and the first accommodating unit 211 of another drum) to transfer the rod-shaped material. The intermediate drum 102 is located between the initial drum 101 and the return drum 103 and is used to reciprocally transfer the rod-shaped material between the initial drum 101 and the return drum 103. The rod-pushing mechanism 104 is arranged on one side of the return drum 103 and is used to push the rod-shaped material in the accommodating groove 21 of the return drum 103, so as to switch the rod-shaped material in the accommodating groove 21 from one accommodating unit to another. That is to say, the initial drum 101 and the intermediate drum 102 are mainly used to transfer the rod-shaped material, while the return drum 103 is mainly used to adjust the position of the rod-shaped material in the accommodating groove 21, so that the rod-shaped material can flow back upstream. The functional module structure of the extended drum set 1000 is simple, expandable, and extremely convenient for manufacturing and maintenance.

[0040] Through the cooperation among the initial drum 101, the intermediate drum 102, and the return drum 103, a circular closed-loop path can be formed, which can ensure the stability of the rod-shaped material transfer process, without slippage, deformation, or surface damage of the rod-shaped material. And functional structures (such as bead detection, end face detection, shape detection, etc.) can be added on the sides of these drums according to requirements. For example, it can be added on the left or right side of the intermediate drum 102 as shown in Figure 2 the figure.

[0041] Since the extended drum set 1000 can realize the circular conveying of the rod-shaped material, the extended drum set 1000 can be installed at any required position of the equipment, and is no longer restricted by the conveying direction of the rod-shaped material in the equipment. The specific arrangement positions of the initial drum 101, the intermediate drum 102, and the return drum 103 can be set according to the actual equipment requirements. For example, when there is enough space in the height direction of the equipment, the drums can be arranged in sequence along the height direction; when there is space in the length direction of the equipment, the drums can be arranged in sequence along the length direction. Just make a specific and flexible selection according to the type of equipment. For example, as shown in Figure 2As shown, in such equipment, there is a larger space on the right side, so the expansion drum group 1000 can be arranged on the right side, and the intermediate drum 102 and the return drum 103 can be arranged along the height direction.

[0042] It is understandable that in Figure 2 In the illustrated embodiment, only one intermediate drum 102 is provided in the expansion drum assembly 1000. Of course, in other embodiments, when more functional structures need to be provided, the number of the intermediate drums 102 can be increased according to the space of the assembly itself, thereby providing more installation locations for the functional structures to meet more functional requirements such as rod-shaped material detection.

[0043] Specifically, Figure 2 As shown, the initial drum 101 rotates counterclockwise, the intermediate drum 102 rotates clockwise, and the return drum 103 rotates counterclockwise. After the first accommodating unit 211 (or the second accommodating unit 212) of the initial drum 101 receives the rod-shaped material, the initial drum 101 rotates to transport the rod-shaped material to the intermediate drum 102 through the lower area of ​​the drum; after the first accommodating unit 211 (or the second accommodating unit 212) of the intermediate drum 102 receives the rod-shaped material, the intermediate drum 102 rotates to transport the rod-shaped material to the return drum 103 through the left area of ​​the drum; after the first accommodating unit 211 (or the second accommodating unit 212) of the return drum 103 receives the rod-shaped material, the return drum 103 rotates to transport the rod-shaped material to the position of the rod-shifting mechanism 104 through the right area of ​​the drum, and the rod-shifting mechanism 104 shifts the rod-shaped material, thereby changing the position of the rod-shaped material, and allowing the rod-shaped material to move from the previous accommodating unit to another accommodating unit for return, thereby realizing the upward transfer of the rod-shaped material. As the return drum 103 continues to rotate, the rod-shaped material is sent back to the intermediate drum 102 through the left area of ​​the drum; after the receiving unit for sending back in the intermediate drum 102 receives the rod-shaped material, the rod-shaped material is sent back to the initial drum 101 through the right area of ​​the drum; and after the receiving unit for sending back in the initial drum 101 receives the rod-shaped material, the rod-shaped material is sent back to the transition drum 200 through the upper area of ​​the drum, thereby realizing the entire circulation of the rod-shaped material. The transmission path between two adjacent drums is an "8"-shaped circulation path structure as a whole, which makes more full use of the space areas of the drums, so that the space area on one side of the drum can be used to send out the rod-shaped material, and the space area on the other side can be used to send back the rod-shaped material.

[0044] Preferably, in one embodiment, the negative pressure of the gas distribution groove 31 in the gas distribution seat corresponding to the drum wheel is controlled by the angle design so as to smoothly transfer the rod-shaped material. For example, the first gas distribution groove 311 and the second gas distribution groove 312 in the gas distribution seat 30 in the initial drum wheel 101 are axially displaced, one is located at the front end and the other is located at the rear end. When the initial drum wheel 101 and the transition wheel 200 transfer the rod-shaped material to transfer the rod-shaped material, the negative pressure of the front end gas distribution groove of the gas distribution seat is used to control the negative pressure, and the rear end gas distribution groove has no negative pressure. When the initial drum wheel 101 and the transition wheel 200 transfer the rod-shaped material to transfer the rod-shaped material back, the negative pressure of the rear end gas distribution groove of the gas distribution seat is used to control the negative pressure, and the front end gas distribution groove has no negative pressure, so as to realize the smooth transfer of the rod-shaped material. The docking between the subsequent drum wheels can adopt this principle structure.

[0045] Preferably, in one embodiment, the slot width of the receiving slot 21 is greater than twice the diameter of the rod-shaped material. In the same receiving slot 21 in the return drum 103, along the circumferential direction, the first accommodating unit 211 is located on one side of the receiving slot 21, and the second accommodating unit 212 is located on the other side of the receiving slot 21. When the return drum 103 rotates, the first accommodating unit 211 in the same receiving slot 21 is located in front of the second accommodating unit 212. The rod-shifting mechanism 104 is used to shift the rod-shaped material in the first accommodating unit 211 to the second accommodating unit 212. That is, in this embodiment, the rod-shifting mechanism 104 is mainly used to shift the rod-shaped material along the circumferential direction and switch the accommodating unit of the rod-shaped material. When the rod-shaped material flows to the rod-shifting mechanism 104, the rod-shifting mechanism 104 shifts the rod-shaped material backward, thereby shifting the rod-shaped material from the first accommodating unit 211 to the second accommodating unit 212. Specifically, in one embodiment, the initial drum 101 and the intermediate drum 102 may also adopt the structure of the receiving groove 21 of the return drum 103. In the same receiving groove 21, it is best that the first receiving unit 211 and the second receiving unit 212 are separated by a relatively long distance, so that the spaces of the first receiving unit 211 and the second receiving unit 212 do not interfere with each other, thereby more stably transferring the rod-shaped material in both directions. In addition, in other embodiments, the first receiving unit 211 and the second receiving unit 212 in the same receiving groove 21 may also be arranged in sequence along the axial direction, and accordingly, the rod-shifting mechanism 104 needs to adopt an axial rod-shifting structure. In this embodiment, the circumferential arrangement is adopted, which can make the overall structure simpler, and does not require a large number of matching structures. Only one rod-shifting mechanism 104 is required to realize the bidirectional transfer of the rod-shaped material.

[0046] Preferably, in one embodiment, the rod pushing mechanism 104 is a rod pushing roller, and the surface of the rod pushing roller for contacting the rod-shaped material is provided with uniform first strip-shaped protrusions 1041. The bottom surface of the receiving groove 21 of the return drum 103 is provided with uniform second strip-shaped protrusions 213. When feeding the material, based on the principle that the moving linear speeds of the rod pushing mechanism 104 and the return drum 103 are opposite, the first strip-shaped protrusions 1041 and the second strip-shaped protrusions 213 drive the rod-shaped material to change the slot position on the drum, ensuring that the rod-shaped material is transmitted upward and returned downward along the extended drum group 1000 with the slot positions on the drum being misaligned. With this structure, it is possible to better avoid the rod-shaped material from slipping, allow the rod-shaped material to roll backward, improve the stability of the rod-shaped material switching positions, and avoid wear of the rod-shaped material. Using the rod pushing roller can better avoid damaging the rod-shaped material and prevent the surface of the rod-shaped material from being damaged.

[0047] More preferably, in one embodiment, the protruding size of the protruding portion 10411 of the first strip-shaped protrusion 1041 located at the frontmost side is longer, so that when contacting, it can ensure that the rod-shaped material is pushed backward. As the rod pushing roller continues to roll, the protruding portion 10411 will gradually move away from the return drum 103, so that it will not hinder the rod-shaped material in the subsequent process, and enable the rod-shaped material in the second receiving unit 212 to flow smoothly through this area.

[0048] Preferably, in one embodiment, the receiving units between adjacent two drums are butt-jointed in a staggered manner. That is to say, the first receiving unit 211 of the upstream drum is butt-jointed with the second receiving unit 212 of the downstream drum (or the second receiving unit 212 of the upstream drum is butt-jointed with the first receiving unit 211 of the downstream drum), thereby realizing the transmission of the rod-shaped material. With this structure, the stability of the rod-shaped material during the transmission process can be improved, and both sides of the rod-shaped material can be surrounded to a certain extent by the side walls of the receiving units during the transmission process. For example, as Figure 2 shown, the initial drum 101 receives the rod-shaped material sent out by the transition drum 200 through the first receiving unit 11 and transmits it to the intermediate drum 102, and the intermediate drum 102 receives the rod-shaped material sent out by the initial drum 101 through the second receiving unit 12. Similarly, the return drum 103 receives the rod-shaped material sent out by the intermediate drum 102 through the first receiving unit 11, thereby realizing the upward transmission of the rod-shaped material. Similarly, the rod-shaped material is transmitted downward in sequence through: the second receiving unit 12 of the return drum 103 - the first receiving unit 11 of the intermediate drum 102 - the second receiving unit 12 of the initial drum 101, and then is transmitted back to the transition drum 200. And corresponding functional structures (such as detection structures, etc.) can be provided on the transmission path.

[0049] Preferably, in one embodiment, each drum is driven by an independent servo motor. Driving by an independent servo motor can adjust each drum separately, thereby improving the stability of the filter rod material transfer. For example, the initial drum 101 is driven by the first servo motor 201, the intermediate drum 102 is driven by the second servo motor 202, the return drum 103 is driven by the third servo motor 203, and the rod pushing mechanism 104 is driven by the fourth servo motor 204. The servo motor can be specifically connected to the rotating shaft 10 of the drum. Independent driving facilitates the observation of the conditions of each drum, facilitates phase control, and improves the reliability of the butt joint of the rod-shaped material.

[0050] Specifically, in one embodiment, the rod pushing mechanism 104 is connected to the fourth servo motor 204 through a coupling 106, and the rod pushing mechanism 104 is installed on the flange 105. In the rod pushing mechanism 104, components can be fixed and limited by washers and screws, etc.

[0051] Specifically, in one embodiment, the extended drum group 1000 further includes a first air distribution box 301, and the air distribution seats 30 of each drum are fixedly connected to the first air distribution box 301 by screws and positioning pins.

[0052] Meanwhile, in one embodiment, a tobacco processing device is further provided, which applies the extended drum group 1000, and the initial drum 101 is used to dock with the transition drum 200 in the tobacco processing device.

[0053] Preferably, in one embodiment, the docking position between the initial drum 101 and the transition drum 200 is located between the feeding position and the discharging position of the transition drum 200. For example, as Figure 2 shown, the feeding position of the transition drum 200 is located on the upper side, the discharging position of the transition drum 200 is located on the lower side, and the docking position between the initial drum 101 and the transition drum 200 is located on the right side. Thus, after the transition drum 200 picks up the rod-shaped material from the upstream, it will first flow into the extended drum group 1000, and then flow back to the transition drum 200 and be transferred backward. Among them, corresponding rod-shaped material receiving grooves can be provided on the transition drum 200 to correspond to the first receiving unit 211 and the second receiving unit 212 on the initial drum 101 one by one to realize the stable butt joint transfer of the rod-shaped material; or a corresponding negative pressure control structure can be provided, so that the rod-shaped material receiving groove in the transition drum 200 first sends the rod-shaped material into the initial drum 101, and then picks up the rod-shaped material sent back by the initial drum 101. Of course, other required structures can also be adopted, as long as the transfer of the rod-shaped material between the two drums can be realized.

[0054] Preferably, in another embodiment, the initial drum 101 is docked with the transition drum 200, and the initial drum 101 is also used to dock with the drum downstream of the transition drum 200 in the tobacco processing equipment. That is to say, in this embodiment, the initial drum 101 can be docked with two drums in the tobacco processing equipment. The first receiving unit 211 in the initial drum 101 can pick up the rod-shaped material sent by the upstream drum, and the second receiving unit 212 in the initial drum 101 can send the rod-shaped material back to the downstream drum. For example, as Figure 2 shown, the feeding position of the transition drum 200 is located on the upper side, the discharging position of the transition drum 200 is located on the right side. The rod-shaped material in the transition drum 200 flows into the first receiving unit 211 of the initial drum 101, then is transferred in the expansion drum group 1000, and finally is sent into the drum downstream of the transition drum 200 through the second receiving unit 212 of the initial drum 101.

[0055] Even in one embodiment, it can also be that the initial drum 101 is docked with the transition drum 200, and the initial drum 101 is also used to dock with the equipment downstream of the tobacco processing equipment. That is to say, in this embodiment, after the initial drum 101 picks up the rod-shaped material sent out from the transition drum 200 for circulation, it is then directly sent into the downstream equipment through the initial drum 101. For example, the rod-shaped material in the transition drum 200 flows into the first receiving unit 211 of the initial drum 101, then is transferred in the expansion drum group 1000, and finally is directly sent into the downstream equipment through the second receiving unit 212 of the initial drum 101.

[0056] That is to say, the initial drum 101 can be docked with one drum in the tobacco processing equipment, so as to pick up the rod-shaped material for expansion circulation and then send the rod-shaped material back to this drum, so that the rod-shaped material continues the subsequent processing process in the tobacco processing equipment; or, the initial drum 101 can be docked with two adjacent drums in the tobacco processing equipment, so as to pick up the rod-shaped material from the upstream drum for expansion circulation and then send the rod-shaped material back to the downstream drum, so that the rod-shaped material continues the subsequent processing process in the tobacco processing equipment; or, the initial drum 101 can be docked with the tobacco processing equipment and the equipment downstream of the tobacco processing equipment, so as to pick up the rod-shaped material from the drum in the tobacco processing equipment for expansion circulation and then directly send the rod-shaped material into the downstream equipment.

[0057] Specifically, in one embodiment, the tobacco processing equipment is a cigarette making and tipping machine.

[0058] Preferably, in one embodiment, a guide plate 300 is provided at the feeding position of the transition drum 200. When the unit works normally, when the transition drum 200 transfers the rod-shaped material on the cigarette assembling machine, the guide plate 300 guides and limits the transfer of the rod-shaped material, facilitating the smooth transfer of the rod-shaped material.

[0059] Specifically, the rod-shaped material can be a rolled cigarette, or a base rod (such as a tobacco segment, a filter rod segment, etc.) in the cigarette production process, depending on the actual equipment required to be installed. The expansion drum assembly 100 can transfer single-row cigarettes or double-row cigarettes.

[0060] Specifically, in one embodiment, the transition drum 200 also includes a transition drum shaft 210, a transition drum body 220, a transition drum gas distribution seat 230 and other components. The connection and installation methods between the components are basically the same as those of the aforementioned drums, and will not be repeated here. The tobacco processing equipment also includes a second gas distribution box 302 and a bottom plate 400. The first gas distribution box 301 and the second gas distribution box 302 are installed on the bottom plate 400, and the bearing seats of each drum can be installed on the bottom plate 400 by screws. The guide plate 300 can be fixedly connected to the transition drum gas distribution seat 230 by screws and positioning pins. The transition drum 200 is driven by a fifth servo motor 205.

[0061] Specifically, in one embodiment, the intermediate drum 102 is located at the upper right of the initial drum 101, the return drum 103 is located above the intermediate drum 102, and the rod-moving mechanism 104 is located above the return drum 103. The longitudinally arranged expansion drum assembly 1000 allows the rod-shaped material to be transferred upward along the expansion drum assembly 1000 for inspection and then return downward to the original path. The expansion drum assembly 1000 solves the problem of meeting the increasing inspection requirements for cigarette quality without increasing the length and floor space of the receiving and assembling machine.

[0062] In addition, in other embodiments, the transition drum 200 may also be arranged in the expansion drum group 1000, and when the tobacco processing equipment needs to increase the functional structure, the transition drum 200 can be installed between the two conveying drums of the tobacco processing equipment to connect the expansion drum group 1000 to the tobacco processing equipment.

[0063] The above description is only an implementation mode of the present invention. It should be pointed out that, for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present invention, but these all belong to the protection scope of the present invention.

Claims

1. A drum wheel for conveying rod-shaped materials, characterized in that: It includes a rotating shaft, a drum body, and a valve seat; The rotating shaft is connected to the drum body; The outer circumferential surface of the drum body is provided with a plurality of accommodating grooves, the accommodating grooves include a first accommodating unit and a second accommodating unit, the first accommodating unit and the second accommodating unit are respectively used to accommodate rod-shaped materials, the first accommodating unit and the second accommodating unit are used to transfer rod-shaped materials in opposite directions, one accommodating unit is used to receive the rod-shaped materials sent from the upstream drum, and the other accommodating unit is used to send the rod-shaped materials back; The gas distribution seat is arranged in the drum body, and a gas distribution groove is provided on the gas distribution seat; The drum body is provided with a first cavity and a second cavity at a position corresponding to the gas distribution groove. The first cavity is correspondingly opened in the first accommodating unit, and the second cavity is correspondingly opened in the second accommodating unit.

2. The rod-shaped material conveying drum according to claim 1, characterized in that: The first accommodating unit and the second accommodating unit in the same accommodating groove are arranged in sequence along the circumferential direction, and when the drum body rotates, the first accommodating unit is located in front of the second accommodating unit.

3. The rod-shaped material conveying drum according to claim 2, characterized in that: The gas distribution groove comprises a first gas distribution groove and a second gas distribution groove; The first gas distribution groove and the second gas distribution groove are axially staggered and circumferentially misaligned; The first cavity corresponds to the first gas distribution groove in the axial direction; The second cavity corresponds to the second gas distribution groove in the axial direction.

4. The rod-shaped material conveying drum according to claim 3, characterized in that: Along the axial direction, the first gas distribution grooves and the second gas distribution grooves are respectively provided with a plurality of grooves, and one second gas distribution groove is provided between two adjacent first gas distribution grooves, and one first gas distribution groove is provided between two adjacent second gas distribution grooves; A plurality of first cavities are sequentially opened in the first accommodation unit along the axial direction, and one first cavity is arranged corresponding to one first gas distribution groove; A plurality of second cavities are sequentially opened in the second accommodation unit along the axial direction, and one second cavity is arranged corresponding to one second gas distribution groove.

5. An expansion drum assembly, characterized in that: It includes an initial drum, an intermediate drum, a return drum and a rod mechanism; The initial drum, the intermediate drum and the return drum all adopt the structure of the rod-shaped material conveying drum as claimed in any one of claims 1 to 4, and two adjacent drums are butted against each other through a receiving unit to transfer the rod-shaped material; The intermediate drum is located between the initial drum and the return drum, and is used to transfer the rod-shaped material back and forth between the initial drum and the return drum; The rod-moving mechanism is arranged at one side of the return drum, and is used for moving the rod-shaped material in the containing groove in the return drum, so as to switch the rod-shaped material in the containing groove from one containing unit to another containing unit.

6. The expansion drum assembly according to claim 5, characterized in that: The width of the receiving groove is greater than twice the diameter of the rod-shaped material; In the same receiving groove of the return drum, along the circumferential direction, the first receiving unit is located at one side of the receiving groove, and the second receiving unit is located at the other side of the receiving groove; and when the return drum rotates, the first receiving unit in the same receiving groove is located in front of the second receiving unit; The rod-moving mechanism is used to move the rod-shaped material in the first accommodating unit into the second accommodating unit.

7. The expansion drum assembly according to claim 5, characterized in that: The rod-moving mechanism is a rod-moving roller, and the surface of the rod-moving roller for contacting with the rod-shaped material is provided with uniform first strip-shaped protrusions; The bottom surface of the receiving groove of the return drum is provided with uniform second strip-shaped protrusions.

8. The expansion drum assembly according to claim 5, characterized in that: The accommodating units between two adjacent drum wheels are staggered and docked.

9. The expansion drum assembly according to claim 5, characterized in that: Each drum is driven by an independent servo motor.

10. A tobacco processing device, characterized in that: An expansion drum assembly as claimed in any one of claims 5 to 9 is used.

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