A cut filter rod partial draw device and system

Abstract

The patent provides a cutting filter rod suction device and system, which is coaxially sleeved from inside to outside by a first sleeve and a second sleeve, and the second sleeve can rotate relative to the first sleeve, wherein: the first sleeve is connected with a driving device and a negative pressure system, and is provided with ventilation sections and closed sections in the circumferential direction at intervals, the ventilation sections can conduct negative pressure to the outer periphery; the outer surface of the second sleeve is provided with an arc-shaped groove extending in the axial direction, and is provided with a cutting groove inward in the circumferential direction, the cutting groove separates the arc-shaped groove into a suction area and a pressure relief area in the axial direction, the suction area can act on the filter rod with negative pressure when communicating with the ventilation section, and cut off the negative pressure when overlapping with the closed section, so that the filter rod is in a normal pressure state, the suction area realizes periodic suction, and the arc-shaped groove can realize differential suction in the axial direction.

Description

Technical Field

[0001] This patent relates to the field of new tobacco production equipment, specifically to a cutting filter rod dispensing device and system. Background Technology

[0002] In the tobacco processing industry, filter rods, as the core functional component of cigarette filters, directly determine the consistency of subsequent cigarette product quality and production efficiency through the precision of their cutting and sorting processes. In actual production, to adapt to the filter requirements of different cigarette specifications, the continuously formed filter rod needs to be cut into two independent units according to the designed length. The two cut filter rod segments need to be directionally transported through a drum adsorption system, with different drums receiving and conveying them to the corresponding processing stations. The reliability of this process becomes a key factor restricting the stability of high-speed production lines. Currently, the mainstream filter rod separation and absorption devices in the industry generally adopt a single-layer drum structure, with adsorption holes evenly distributed on the outer surface of the drum. It is connected to an external vacuum system through an internal single negative pressure channel, using pressure difference to fix the filter rod in the circumferential groove. However, this design has inherent structural defects in the cutting scenario, failing to meet the differentiated processing requirements of the two cut filter rod segments, leading to frequent separation and absorption failures, seriously affecting production efficiency and product quality. Traditional single-layer drum-structured filter rod separation devices suffer from two major problems: First, the homogenization of adsorption function leads to sorting failure in the slitting section. The adsorption holes of traditional drums are uniformly distributed throughout the entire surface, without establishing differentiated adsorption areas on both sides of the slitting groove for the slitting process. After the slitting blade completes the cutting action at the slitting groove position on the drum surface, the physical shape (length, center of gravity) of the two filter rods changes relative to the adsorption holes: the front filter rod may experience adsorption force attenuation due to insufficient adsorption contact area, while the rear filter rod may generate unstable torque due to the center of gravity deviating from the adsorption center. During the high-speed rotation of the drum, this mismatch between the adsorption force and the physical characteristics of the filter rod easily causes axial slippage, circumferential deflection, or even detachment from the groove, leading to processing defects in subsequent stations due to material positioning deviations, such as misaligned filter nozzles or misaligned capsule implantation positions. Second, the lack of a zoning mechanism in the air path control causes adsorption disorder. The single-layer drum's air path system uses a single-channel main pipe design, which cannot implement independent negative pressure control on both sides of the slitting groove. Ideally, after slitting, one side of the groove should maintain negative pressure to adsorb the front filter rod, while the other side's groove should cut off the air path to release the rear filter rod. However, due to structural limitations, the adsorption holes on both sides are always connected during actual operation. This lack of functional zoning leads to two typical failures: First, the two filter rods after slitting are simultaneously adsorbed due to the adsorption force on both sides. When the drum rotates between different processes, the uneven force generates tearing stress, causing the filter rod to break. Second, the groove on one side may fail to adsorb due to air path leakage or pressure decay, preventing the corresponding filter rod segment from being effectively supported and causing it to get stuck in the slitting groove, leading to production line shutdown. Although existing technologies attempt to optimize this by adding air path valves or sensor detection, the physical structure of the single-layer drum makes it impossible to establish an effective adsorption functional isolation zone on both sides of the slitting groove, and the problem of adsorption failure remains unresolved. Utility Model Content

[0003] The purpose of this invention is to provide a filter rod cutting and separation device with a simple structure. By establishing an effective adsorption isolation zone on both sides of the cutting groove, it realizes differentiated adsorption and separate transportation of the two sections of the filter rod after cutting.

[0004] This patent provides the following technical solution:

[0005] A filter rod cutting and aspiration device includes: a first sleeve and a second sleeve coaxially sleeved from the inside to the outside, and the second sleeve is rotatable relative to the first sleeve. The first sleeve is connected to a driving device and a negative pressure system, and is provided with an air passage section and a closed section at intervals along the circumferential direction. The air passage section can conduct negative pressure to the outer periphery. The outer surface of the second sleeve is provided with an arc-shaped groove extending axially, and a cutting groove is provided circumferentially inward. The cutting groove divides the arc-shaped groove into an adsorption zone and a pressure relief zone along the axial direction. When the adsorption zone is connected to the air passage section, it can apply negative pressure to the filter rod. When it overlaps with the closed section, it cuts off the negative pressure, so that the filter rod is in a normal pressure state. The adsorption zone achieves periodic adsorption, while the arc-shaped groove can achieve differentiated adsorption along the axial direction.

[0006] Furthermore, it also includes a third sleeve.

[0007] Furthermore, the third sleeve is coaxially sleeved between the first and second sleeves and rotates synchronously with the second sleeve to control the transmission path of negative pressure.

[0008] Furthermore, the adsorption zone is uniformly provided with adsorption pores along the axial direction.

[0009] Furthermore, the adsorption pores are evenly distributed along the bottom surface of the arc-shaped groove in the adsorption zone.

[0010] Furthermore, the outer wall of the third sleeve is provided with a strip-shaped hole that extends axially.

[0011] Furthermore, the negative pressure is transmitted to the adsorption zone through the strip-shaped holes.

[0012] Furthermore, the slitting groove is located in the middle of the second sleeve.

[0013] Furthermore, the axial length of the strip-shaped orifice is sufficient to cover all the adsorption pores.

[0014] Furthermore, the arc-shaped groove of the second sleeve is adapted to the shape and depth of the filter rod to limit the position of the filter rod.

[0015] Furthermore, the width and depth of the slitting groove are matched with the size of the slitting blade to ensure that the slitting blade can smoothly cut into the slitting groove and cut the filter rod.

[0016] A filter rod cutting and suction system includes a filter rod cutting and suction device according to any one of the above-mentioned methods, and further includes a first drum and a second drum. The first drum has a first receiving groove for receiving the first filter rod after cutting; the second drum has a second receiving groove for receiving the second filter rod after cutting. The first and second receiving grooves are parallel to an arc-shaped groove and their shapes and depths are adapted to the filter rods. The bottom of the first receiving groove has a first adsorption hole; the bottom of the second receiving groove has a second adsorption hole. The first drum is located on the first side of the cutting groove for receiving the first filter rod under normal pressure after cutting; the second drum is located on the second side of the cutting groove for receiving the second filter rod under normal pressure after cutting.

[0017] Furthermore, the first drum is located downstream of the cutting station of the filter rod separation device, and the second drum is located downstream of the first drum. When the second filter rod is aligned with the second drum, the adsorption zone is aligned with the closed section, so that the second filter rod is under normal pressure when it reaches the second drum.

[0018] This patent has the following beneficial effects:

[0019] This utility model's filter rod cutting and separation device and system, through a multi-layer sleeve structure design and synergistic effect, achieves differentiated adsorption and separate conveying of the two filter rod segments after cutting, significantly improving production efficiency and product quality. The system sets up adsorption zones and depressurization zones on both sides of the cutting groove, ensuring that the first filter rod after cutting is under normal pressure and held only by an arc-shaped groove, while the second filter rod is under negative pressure adsorption. This design not only improves the accuracy and reliability of the separation process but also prepares for subsequent separate conveying. The first filter rod is immediately under normal pressure after cutting, held by the arc-shaped groove in the depressurization zone, and quickly aligned with the first receiving groove of the first drum after rotating a small predetermined angle. At this time, the first adsorption hole of the first drum activates negative pressure, using the pressure difference to adsorb and convey the first filter rod to the subsequent station, ensuring smooth and efficient transmission. Furthermore, the proximity of the adsorption station to the first drum ensures that the first filter rod will not detach from the device. Meanwhile, the second filter rod is stably adsorbed in the adsorption zone and can rotate stably with the second sleeve for a considerable distance. When the filter rod rotates to the closed section of the first sleeve, it aligns with the second receiving slot of the second drum. At this point, the second filter rod loses negative pressure, and the second adsorption hole of the second drum activates negative pressure, adsorbing and conveying the second filter rod to the subsequent station. This process also utilizes pressure difference to ensure the stable transfer of the second filter rod. In this process, the system cleverly utilizes the ventilation and closed sections of the first sleeve to achieve periodic adsorption and depressurization in the adsorption zone. This separation adsorption mechanism ensures a smooth transition of the filter rod between different drums, avoiding filter rod tearing caused by uneven adsorption force during transfer between drums. Simultaneously, the coaxial sleeve structure of the three sleeves optimizes the negative pressure conduction path, reduces air leakage, and improves the uniformity of adsorption force. Combined with a dynamic air path switching mechanism, it precisely matches the negative pressure adsorption area with the drum rotation cycle, effectively adapting to the operational requirements of high-speed production lines, ensuring the stability of the filter rod during high-speed transmission, and preventing detachment or displacement due to insufficient adsorption force. Furthermore, the modular sleeve structure design allows for quick adaptation to the slitting and absorption requirements of filter rods of different lengths by adjusting the parameters of relevant components, without the need for structural modifications to the drum body. This significantly reduces the time cost and material loss during production line changeover and debugging, and enhances the adaptability of the equipment to diverse production processes. As a result, while improving production efficiency, it also ensures the consistency of cigarette product quality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this patent, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this patent and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1This is a three-dimensional schematic diagram of the overall assembly of the filter rod cutting and suction device in this patent;

[0022] Figure 2 This is a three-dimensional schematic diagram of the first sleeve and the second sleeve in this patent;

[0023] Figure 3 This is a three-dimensional schematic diagram of the third sleeve in this patent;

[0024] Figure 4 This is an exploded view of the filter rod cutting and suction device in this patent.

[0025] Figure 5 This is a schematic diagram showing the interaction between the suction drum of the filter rod suction device and the first and second drums.

[0026] Figure 6 This is a schematic diagram from another perspective showing the interaction between the suction drums of the filter rod suction device and the first and second drums.

[0027] The reference numerals in the attached figures are explained as follows:

[0028] First sleeve: 1

[0029] Ventilation section: 11

[0030] Closed section: 12

[0031] Second sleeve: 2

[0032] Third sleeve: 3

[0033] Drive unit: 4

[0034] Motor: 41

[0035] Shaft end flange: 42

[0036] Motor: 13

[0037] Arc-shaped groove: 21

[0038] Adsorption region: 21a

[0039] Decompression zone: 21b

[0040] Slitting groove: 22

[0041] Adsorption pores: 23

[0042] Slotted holes: 31

[0043] Filter rods: 6

[0044] First filter rod: 6a

[0045] Second filter rod: 6b

[0046] First drum wheel: 8

[0047] First receiving slot: 81

[0048] First adsorption pore: 82

[0049] Second drum wheel: 9

[0050] Second receiving slot: 91

[0051] Second adsorption pore: 92

[0052] Cutting station: A Detailed Implementation

[0053] The detailed features and advantages of this application are described below in the specific embodiments. The content of this description is sufficient to enable any person skilled in the art to understand the technical content of this application and implement it accordingly. Based on the specification, claims and drawings disclosed in this specification, a person skilled in the art can easily understand the related objectives and advantages of this application.

[0054] The present invention will now be described with reference to the accompanying drawings, in which similar reference numerals denote similar elements. While specific structures and arrangements are discussed, it should be understood that this is done merely for illustrative purposes. Those skilled in the art will recognize that other structures and arrangements can be used without departing from the spirit and scope of the present invention. It will be apparent to those skilled in the art that the present invention can also be used in a variety of other applications.

[0055] In this specification and claims, several terms will be used, and unless otherwise indicated, these terms will be defined to have the following meanings:

[0056] The singular forms “a” and “the” include their corresponding plural forms. “At least one” means one or more, and “more” means two or more. “At least one of the following” or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can be expressed as: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0057] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0058] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0059] Unless otherwise indicated, the following abbreviations have the following meanings, and any other abbreviations used herein but not defined have their generally accepted standard meanings:

[0060] All other terms used herein for special definition are intended to have the general meaning understood by one of ordinary skill in the art, and in particular, meaning that one of ordinary skill in the art, upon reading the claims, specification and drawings of this patent, can directly and without doubt determine how the technical solution of this patent can be implemented.

[0061] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0062] See Figures 1-4 The filter rod cutting and suction device mainly includes a first sleeve 1, a third sleeve 3, and a second sleeve 2, which are coaxially fitted from the inside to the outside. The first sleeve 1 connects to a drive device 4 and a negative pressure system (not shown in the figure), and can rotate to transmit negative pressure outwards. The second sleeve 2 has an arc-shaped groove 21 extending axially on its outer surface and a slitting groove 22 arranged circumferentially inwards, dividing the second sleeve 2 into an adsorption zone 21a and a pressure relief zone 21b. The adsorption zone 21a has several evenly distributed adsorption holes 23, which communicate with the negative pressure system to generate adsorption force; the pressure relief zone 21b has no adsorption holes and is under normal pressure. The third sleeve 3 is coaxially fitted between the first sleeve 1 and the second sleeve 2, and its outer wall has a strip-shaped hole 31. The strip-shaped hole 31 communicates with the negative pressure system of the first sleeve 1 and transmits negative pressure to the adsorption zone 21a of the second sleeve 2 through the strip-shaped hole 31.

[0063] The driving relationship of the device is as follows: the first sleeve is fixed coaxially with the driving device, while the second sleeve and the third sleeve are fixed to rotate synchronously through a limiting structure, and the second sleeve and the third sleeve can rotate relative to the first sleeve.

[0064] In actual operation, the entire filter rod is conveyed by the front drum to the outside of the second sleeve 2 of the device. The filter rod is adsorbed into the arc-shaped groove 21 of the adsorption zone 21a, and the length of the filter rod spans both the adsorption zone and the pressure relief zone. The filter rod rotates with the second sleeve 2 to the slitting position. When the slitting groove 22 rotates to align with the slitting blade, the slitting blade cuts into the slitting groove 22, cutting the filter rod into two sections. The front section of the filter rod is located in the groove of the adsorption zone 21a and continues to be adsorbed by the second sleeve 2 and conveyed to the docking position of the third drum. The rear section of the filter rod is located in the groove of the pressure relief zone 21b. Since there is no negative pressure, it is only limited by the groove structure. When it rotates to the docking position of the second drum, the adsorption hole of the second drum activates negative pressure to suck it out, realizing the separate conveying of the two sections of the filter rod.

[0065] First sleeve

[0066] See Figure 3 , Figure 4 The first sleeve 1 is a hollow cylindrical structure. Its inner wall is connected to the pipe of the negative pressure system, and its outer wall is provided with a ventilation section 11 and a closed section 12 at intervals along the circumference. The ventilation section 11 is used to uniformly transmit the negative pressure to the strip hole 31 of the third sleeve 3. When the second sleeve 2 and the third sleeve 3 rotate synchronously to align with the closed section 12, the negative pressure cannot be transmitted to the strip hole 31, and therefore cannot be transmitted to the adsorption hole 23. The end of the first sleeve 1 is connected to the motor 41 through the shaft end flange 42. The motor 41 drives the first sleeve 1 to rotate through the shaft end flange 42, thereby realizing the rotation drive of the entire device. During operation, the vacuum generated by the negative pressure system is transmitted through the ventilation section 11 of the first sleeve 1 and then through the strip hole 31 of the third sleeve 3 to the adsorption hole 23 of the second sleeve 2, so that the arc-shaped groove 21 of the adsorption zone 21a forms a negative pressure adsorption force, thereby stably adsorbing the filter rod in the arc-shaped groove.

[0067] The cooperation of the ventilation section 11 and the closed section 12 of the first sleeve 1 enables periodic adsorption and depressurization of the adsorption zone 21a. When the second sleeve 2 and the third sleeve 3 rotate to align with the ventilation section 11, a negative pressure adsorption force is formed in the adsorption zone 21a; when they rotate to align with the closed section 12, the negative pressure in the adsorption zone 21a is lost, forming a normal pressure state. This periodic adsorption and depressurization mechanism ensures the stable transfer of the filter rod after cutting, avoiding filter rod tearing or transfer failure caused by uneven adsorption force.

[0068] Second sleeve

[0069] The second sleeve 2 is fitted onto the outside of the first sleeve 1. Its outer surface has an arc-shaped groove 21 extending axially. The depth of the arc-shaped groove 21 is adapted to the size of the filter rod to limit its position. The arc-shaped groove 21 is evenly distributed circumferentially. A slitting groove 22 is provided circumferentially inward in the middle of the second sleeve 2, dividing it into an adsorption zone 21a and a pressure relief zone 21b. The bottom of the arc-shaped groove 21 in the adsorption zone 21a has an adsorption hole 23. This adsorption hole 23 is coaxially aligned with the strip-shaped hole 31 of the third sleeve 3 and the main air passage of the first sleeve 1, forming a negative pressure conduction path. The bottom surface of the arc-shaped groove 21 in the pressure relief zone 21b has no adsorption holes, and this area corresponds axially to the area of ​​the third sleeve 3 without strip-shaped holes, forming a natural pressure relief state.

[0070] During the slitting process, when the slitting groove 22 rotates to align with the fixed slitting blade, the slitting blade cuts into the slitting groove 22, cutting the filter rod into two sections. The first section of the filter rod is located in the groove of the adsorption zone 21a, and continues to be adsorbed by the second sleeve 2 and conveyed to the docking position of the third drum. The second section of the filter rod is located in the groove of the pressure relief zone 21b. Since there is no negative pressure adsorption, it is limited only by the clamping effect of the groove structure. When it rotates to the docking position of the second drum, the adsorption hole of the second drum activates negative pressure to suck it out, realizing the separate conveying of the two sections of the filter rod.

[0071] Third sleeve

[0072] The third sleeve 3 is coaxially fitted between the first sleeve 1 and the second sleeve 2, and has several strip-shaped holes 31 evenly distributed circumferentially. The length direction of the strip-shaped holes 31 is parallel to the axial direction and is arranged in a circular array on the wall surface of the third sleeve 3. The strip-shaped holes 31 can cover all the adsorption holes 23 of the second sleeve 2, that is, the strip-shaped hole area is axially aligned with the arc-shaped groove area of ​​the adsorption hole; the arc-shaped groove area corresponding to the non-strip-shaped hole area has no adsorption hole, thus forming a physical isolation between the gas path conduction and cutoff. During operation, the vacuum generated by the negative pressure system enters the main gas path channel through the hollow cavity of the first sleeve 1, and is then conducted to the adsorption holes 23 of the second sleeve 2 through the strip-shaped holes 31 of the third sleeve 3, so that the arc-shaped groove 21 of the adsorption area 21a forms a negative pressure adsorption force. The strip-shaped holes of the third sleeve are periodically connected to the ventilation section and the closed section of the first sleeve, respectively, to ensure that the negative pressure can be evenly conducted to the adsorption holes of the second sleeve. This design optimizes the negative pressure conduction path, reduces gas path leakage, and improves the uniformity of adsorption force. Furthermore, the design of the third sleeve allows for quick adaptation to the cutting and suction needs of filter rods of different lengths by adjusting the circumferential distribution range and position of the strip holes.

[0073] System working principle

[0074] The filter rod cutting and adsorption device of this utility model achieves precise cutting and adsorption of filter rods through a three-layer sleeve structure. The working process is as follows:

[0075] Filter rod conveying stage: The entire filter rod is conveyed by the front drum to the arc-shaped groove of the second sleeve. At this time, the adsorption holes in the adsorption zone are connected to the adsorption zone of the first sleeve through the strip hole of the third sleeve. The vacuum generated by the negative pressure system forms a negative pressure in the adsorption zone through this conduction path, stably adsorbing and positioning the filter rod. Subsequently, the second sleeve rotates to the slitting station A.

[0076] The slitting action triggering stage: The slitting groove is aligned with the slitting blade, and the slitting blade cuts into the slitting groove, cutting the filter rod into the first filter rod 6a and the second filter rod 6b. The second filter rod continues to be adsorbed by the second sleeve due to the continuous negative pressure in the adsorption zone. The first filter rod is located in the pressure relief zone, which is under normal pressure because there are no adsorption pores in this area. At this time, the first filter rod is only limited by the groove structure.

[0077] In the adsorption and transfer stage: Since there is no negative pressure in the area without adsorption holes, the first filter rod is only limited by the groove. In this system, the first drum is set at a position close to the downstream of the cutting station. The second sleeve only needs to rotate a small predetermined angle to dock with the first drum. The adsorption holes of the first receiving groove of the first drum are in the adsorption state. The first filter rod is sucked out from the groove without adsorption holes by using the principle of staggered adsorption. Although the first filter rod is only limited by the groove during the rotation, the rotation path is short, so it will not fall off the second sleeve.

[0078] The second filter rod is continuously adsorbed by the second sleeve and conveyed to the docking position of the second drum due to the continuous negative pressure in the adsorption zone. The second drum is located downstream of the first drum. When the second sleeve rotates to the docking position with the second drum, it also rotates to the closed section of the first sleeve. At this time, the side of the second filter section in contact with the second sleeve is also under normal pressure. The adsorption holes of the second drum activate the negative pressure, sucking out the second filter rod.

[0079] Through the above working process, the filter rod cutting and suction device and system of this utility model realizes the precise cutting and separate transportation of filter rods, ensuring the stable transfer of filter rods after cutting, avoiding the tearing of filter rods at both ends due to uneven adsorption force during the transfer between drums, and significantly improving production efficiency and product quality.

[0080] Industrial applicability:

[0081] This utility model's filter rod cutting and separation device and system, through a multi-layer sleeve structure design and synergistic effect, achieves differentiated adsorption and separate conveying of the two filter rod segments after cutting, significantly improving production efficiency and product quality. The system sets up adsorption zones and depressurization zones on both sides of the cutting groove, ensuring that the first filter rod after cutting is under normal pressure and held only by an arc-shaped groove, while the second filter rod is under negative pressure adsorption. This design not only improves the accuracy and reliability of the separation process but also prepares for subsequent separate conveying. The first filter rod is immediately under normal pressure after cutting, held by the arc-shaped groove in the depressurization zone, and quickly aligned with the first receiving groove of the first drum after rotating a small predetermined angle. At this time, the first adsorption hole of the first drum activates negative pressure, using the pressure difference to adsorb and convey the first filter rod to the subsequent station, ensuring smooth and efficient transmission. Furthermore, the first adsorption station of the nearby first drum also ensures that the first filter rod will not detach from the device. Meanwhile, the second filter rod is stably adsorbed in the adsorption zone and can rotate stably with the second sleeve for a considerable distance. Just as the first sleeve rotates to its closed section, it aligns with the second receiving slot of the second drum. At this moment, the second filter rod loses negative pressure, and the second adsorption hole of the second drum activates negative pressure, adsorbing and conveying the second filter rod to the subsequent station. This process also utilizes pressure difference to ensure the stable transfer of the second filter rod. In this process, the system cleverly utilizes the ventilation and closed sections of the first sleeve to achieve periodic adsorption and depressurization in the adsorption zone. This separation adsorption mechanism ensures a smooth transition of the filter rod between different drums, avoiding filter rod tearing caused by uneven adsorption force during transfer between drums. Simultaneously, the coaxial sleeve structure of the three sleeves optimizes the negative pressure conduction path, reduces air leakage, and improves the uniformity of adsorption force. Combined with a dynamic air path switching mechanism, it precisely matches the negative pressure adsorption area with the drum rotation cycle, effectively adapting to the operational requirements of high-speed production lines, ensuring the stability of the filter rod during high-speed transmission, and preventing detachment or displacement due to insufficient adsorption force. Furthermore, the modular sleeve structure design allows for quick adaptation to the slitting and absorption requirements of filter rods of different lengths by adjusting the parameters of relevant components, without the need for structural modifications to the drum body. This significantly reduces the time cost and material loss during production line changeover and debugging, and enhances the adaptability of the equipment to diverse production processes. As a result, while improving production efficiency, it also ensures the consistency of cigarette product quality.

[0082] In the several embodiments provided in this application, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed.

[0083] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0084] In this specification, references to "an embodiment" or "a specific implementation" mean that a particular feature, structure, or characteristic described in connection with that embodiment / specific implementation is included in at least one embodiment / specific implementation of the present invention.

[0085] Therefore, the phrase "in one embodiment / specification" appearing in various places in this specification does not necessarily refer to the same embodiment / setting, but rather to possible. Furthermore, specific features, structures, or characteristics may be combined in one or more embodiments / settings in any suitable manner, as may be understood by those skilled in the art from this disclosure.

[0086] Similarly, it should be understood that in the above description of exemplary embodiments / specific implementations of this utility model, various features of this utility model are sometimes combined in a single embodiment / specific implementation or its figures and description, with the aim of simplifying the disclosure and aiding in the understanding of one or more of the various utility aspects. However, except for expressly stated instructions to the contrary or obvious technical contradictions or exclusions, the method of description in this patent should not be construed as reflecting an intention that the claimed utility model claims more features than are expressly stated in each claim. Rather, the utility aspect reflected in the claims lies in not all features of a single foregoing disclosed embodiment / specific implementation. Therefore, the claims following the detailed description are expressly incorporated herein by reference, and each claim exists independently as a separate embodiment / specific implementation of this utility model.

[0087] Furthermore, while some embodiments / specific implementations described herein include, but are not limited to, other features included in other embodiments / specific implementations, combinations of features from different embodiments / specific implementations are intended to fall within the scope of this invention and form different embodiments / specific implementations, as will be understood by those skilled in the art. For example, in the following claims, any embodiment / specific implementation of any claim can be used in any combination.

[0088] The terms and expressions used in this specification are for illustrative purposes and not for limitation. The use of these terms and expressions is not intended to exclude any equivalents of the features or portions thereof shown and described, but rather to allow for various modifications that may be made within the scope of the claims of this invention.

[0089] Therefore, it should be understood that although the present invention has been specifically disclosed through preferred embodiments, exemplary embodiments and optional features, those skilled in the art may take variations or modifications of the concepts disclosed in this specification, and such variations and modifications are therefore considered to be within the scope of the present invention as defined by the appended claims.

[0090] The specific embodiments given in this specification are examples of useful implementations of this utility model. It will be obvious to those skilled in the art that this utility model can be implemented using many variations of the equipment, equipment components, and method steps disclosed in this specification.

[0091] The foregoing description of specific embodiments has fully disclosed the general features of this invention, enabling others to easily modify and / or adapt such embodiments for various applications by applying knowledge within the scope of the art, without excessive experimentation or deviation from the general concept of this invention. Therefore, based on the teachings and guidance provided herein, it is intended that such modifications and alterations be included within the meaning and scope of equivalents of the disclosed embodiments. It should be understood that the wording or terminology used herein is for descriptive purposes and not intended to be limiting; thus, the wording or terminology in this specification will be interpreted by those skilled in the art based on the foregoing teachings and guidance.

[0092] Furthermore, the scope of this invention should not be limited to any of the exemplary embodiments described above, but only to the appended claims and their equivalents.

Claims

1. A filter rod cutting and suction device, characterized in that, include: A first sleeve and a second sleeve are coaxially fitted from the inside out, and the second sleeve is rotatable relative to the first sleeve, wherein: The first sleeve connects the driving device and the negative pressure system, and is provided with a ventilated section and a closed section at intervals along the circumferential direction. The ventilated section can transmit negative pressure to the outer periphery. The outer surface of the second sleeve is provided with an arc-shaped groove extending axially, and a slitting groove is provided circumferentially inward. The slitting groove divides the arc-shaped groove into an adsorption zone and a pressure relief zone axially. When the adsorption zone is connected to the ventilation section, it can apply negative pressure to the filter rod, while when it overlaps with the closed section, it cuts off the negative pressure, so that the filter rod is in a normal pressure state. The adsorption zone realizes periodic adsorption, while the arc-shaped groove can realize differentiated adsorption axially.

2. The filter rod cutting and suction device according to claim 1, characterized in that, It also includes a third sleeve, which is coaxially sleeved between the first sleeve and the second sleeve and can rotate synchronously with the second sleeve to control the transmission path of negative pressure.

3. The filter rod cutting and suction device according to claim 2, characterized in that, The adsorption zone is provided with adsorption holes uniformly along the axial direction, and the adsorption holes are uniformly distributed along the bottom surface of the arc-shaped groove of the adsorption zone.

4. The filter rod cutting and suction device according to claim 3, characterized in that, The outer wall of the third sleeve is provided with a strip-shaped hole, which extends axially and transmits negative pressure to the adsorption zone through the strip-shaped hole.

5. The filter rod cutting and suction device according to claim 4, characterized in that, The slitting groove is located in the middle of the second sleeve.

6. The filter rod cutting and suction device according to claim 5, characterized in that, The axial length of the strip-shaped hole is sufficient to cover all the adsorption pores in the adsorption zone.

7. The filter rod cutting and suction device according to claim 6, characterized in that, The arc-shaped groove of the second sleeve is adapted to the filter rod in terms of shape and depth to limit the position of the filter rod.

8. The filter rod cutting and suction device according to claim 7, characterized in that, The width and depth of the slitting groove are adapted to the size of the slitting blade to ensure that the slitting blade can smoothly cut into the slitting groove and cut the filter rod.

9. A filter rod cutting and suction system, characterized in that, The filter rod cutting and suction device according to any one of claims 1 to 8 further comprises a first drum and a second drum, wherein the first drum is provided with a first receiving groove for receiving the cut first filter rod; and the second drum is provided with a second receiving groove for receiving the cut second filter rod; wherein: The first receiving groove and the second receiving groove are parallel to the arc-shaped groove and their shapes and depths are adapted to the filter rods; the bottom of the first receiving groove is provided with a first adsorption hole; the bottom of the second receiving groove is provided with a second adsorption hole; the first drum is disposed on the first side of the slitting groove and is used to receive the first filter rods under normal pressure after slitting; the second drum is disposed on the second side of the slitting groove and is used to receive the second filter rods under normal pressure after slitting.

10. The filter rod cutting and suction system according to claim 9, characterized in that, The first drum is located downstream of the cutting station of the filter rod separation device, and the second drum is located downstream of the first drum. When the second filter rod is aligned with the second drum, the adsorption area is aligned with the closed section, so that the second filter rod is under normal pressure when it reaches the second drum.

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