Transport roller and filter rod receiving device

Abstract

The application relates to a conveying roller and a filter rod receiving device, the conveying roller comprising a roller body and end covers, the roller body extending along a first direction, the roller body being provided with a cavity penetrating through the roller body along the first direction; the two end covers being respectively located at two ends of the roller body in the first direction and being detachably connected with the roller body, the end cover comprising a cover body and a rotating shaft, the cover body being connected with the roller body, the rotating shaft being located at a side of the cover body away from the roller body, and at least one of the rotating shafts of the two end covers being used for bearing a bearing. The conveying roller provided by the application is provided with the cavity penetrating through the roller body, so that the overall weight of the conveying roller is reduced, the torque impact on the rotating shaft is reduced, the probability of the rotating shaft being broken is reduced, and the service life of the conveying roller is prolonged. The roller body and the end cover are detachably connected, so that even if the rotating shaft on the end cover is broken, the roller body can still be used by replacing the end cover, the replacement efficiency is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This application relates to the field of cigarette manufacturing technology, and in particular to a transfer roller and filter rod receiving device. Background Technology

[0002] During cigarette production, filter rods need to be transferred to the cigarette making unit by equipment. The filter rod receiver is an auxiliary device that connects the cigarette making unit and the filter rod transmitter. Its function is to receive the filter rods emitted by the transmitter into the hopper of the cigarette making unit in an orderly manner for use by the nozzle of the receiver. It is especially suitable for the process of changing the filter rod from longitudinal conveying to transverse conveying.

[0003] The filter rod receiver includes a transfer roller, which is rotatably connected to bearings on the base via shafts on both sides. However, the transfer roller has a large mass and high moment of inertia, resulting in significant torque impact during start-up and shutdown, causing frequent shaft breakage. Once the shaft of the transfer roller breaks, the entire transfer roller needs to be replaced, severely impacting production efficiency. Utility Model Content

[0004] Therefore, it is necessary to provide a transmission roller with a shaft diameter that is not easily broken in order to address the above-mentioned technical problems.

[0005] An embodiment of the first aspect of this application provides a transfer roller, including a roller body and end caps. The roller body extends along a first direction and has a cavity extending through the roller body along the first direction. Two end caps are located at both ends of the roller body in the first direction and are detachably connected to the roller body. Each end cap includes a cover body and a rotating shaft. The cover body is connected to the roller body, and the rotating shaft is located on the side of the cover body away from the roller body. At least one of the rotating shafts of the two end caps is used to carry a bearing.

[0006] In one embodiment, the roller body includes an end face, a first inner peripheral face facing the cavity, and a first outer peripheral face away from the cavity. The two end faces are located at both ends of the roller body in a first direction and are connected to the first inner peripheral face and the first outer peripheral face, respectively. The transfer roller also includes a connector that connects the roller body and the cover.

[0007] In one embodiment, the cover includes a first connecting surface that intersects with a first direction, and at least a portion of the first connecting surface abuts against an end face.

[0008] In one embodiment, a first through hole is provided on the first connecting surface, penetrating the cover body along a first direction, and a first connecting hole is provided on the end face, extending along the first direction. The connector connects the cover body and the roller body through the first through hole and the first connecting hole.

[0009] In one embodiment, the cover has a central axis extending in a first direction and a first circumferential surface surrounding the central axis, at least a portion of the cover extends into the cavity, and at least a portion of the first circumferential surface abuts against the first inner circumferential surface.

[0010] In one embodiment, the roller body is provided with a second through hole that penetrates the roller body radially, and a second connecting hole that extends radially along the cover body is provided on the first circumferential surface. The connector connects the cover body and the roller body through the second through hole and the second connecting hole.

[0011] In one embodiment, the cover has a central axis extending in a first direction, the cover includes a sleeve, the sleeve includes a second inner circumferential surface and a second outer circumferential surface surrounding the central axis, at least a portion of the sleeve surrounds the first outer circumferential surface, and at least a portion of the first outer circumferential surface abuts against the second inner circumferential surface.

[0012] In one embodiment, the sleeve is provided with a third through hole that penetrates the sleeve radially, and a third connecting hole that extends radially along the roller body is provided on the first outer peripheral surface. The connector connects the cover body and the roller body through the third through hole and the third connecting hole.

[0013] In one embodiment, the connection between the cover and the pivot is transitioned by a rounded corner with a radius greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

[0014] An embodiment of the second aspect of this application provides a filter rod receiving device, including the above-described transfer roller, which is used to drive the filter rod to move.

[0015] The transfer roller provided in this application reduces the overall weight of the roller by providing a cavity that runs through the roller body. This reduces the torque impact on the shaft, lowers the probability of shaft breakage, and increases the service life of the transfer roller. By making the roller body and end cap detachable, even if the shaft on the end cap breaks, only the end cap needs to be replaced while the roller body remains usable. This improves replacement efficiency and reduces maintenance costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the transfer roller in some embodiments of this application.

[0018] Figure 2 A cross-sectional schematic diagram of an example transfer roller is shown.

[0019] Figure 3 A cross-sectional schematic diagram of another example of a transfer roller is shown.

[0020] Figure 4 A cross-sectional schematic diagram of another example of a transfer roller is shown.

[0021] Figure label:

[0022] 10. Conveyor rollers;

[0023] 100, Roller body; 110, Cavity; 120, End face; 121, First connecting hole; 130, First inner circumferential surface; 140, First outer circumferential surface; 141, Third connecting hole; 150, Second through hole;

[0024] 200. End cap; 210. Cover body; 211. First connecting surface; 212. First through hole; 213. First circumferential surface; 214. Second connecting hole; 215. Sleeve; 216. Second inner circumferential surface; 217. Second outer circumferential surface; 218. Third through hole; 220. Rotating shaft;

[0025] x, the first direction. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0032] The transfer roller and endoscope provided in the embodiments of this application will be described below with reference to the accompanying drawings. It should be noted that the x-direction in the drawings is the first direction. In the drawings, for ease of drawing, the dimensions are not necessarily proportional to the actual dimensions.

[0033] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the transfer roller in some embodiments of this application. Figure 2 A cross-sectional schematic diagram of an example transfer roller is shown.

[0034] like Figure 1 and Figure 2As shown, this application provides a transfer roller 10, including a roller body 100 and end caps 200. The roller body 100 extends along a first direction (x direction in the figure), and a cavity 110 is provided on the roller body 100 extending through the roller body 100 along the first direction x. Two end caps 200 are respectively located at both ends of the roller body 100 in the first direction x and are both detachably connected to the roller body 100. The end cap 200 includes a cover body 210 and a rotating shaft 220. The cover body 210 is connected to the roller body 100, and the rotating shaft 220 is located on the side of the cover body 210 away from the roller body 100. At least one of the rotating shafts 220 of the two end caps 200 is used to carry a bearing (not shown).

[0035] It is easy to understand that the transfer roller 10 is rotatably connected to the base of the filter rod receiving device via bearings, and the rotating shaft 220 of the transfer roller 10 extends into the bearings. When the transfer roller 10 rotates, it drives the filter rods to move in a preset direction, thereby realizing the transfer of the filter rods. Preferably, the transfer roller 10 is rotatably connected to the base of the filter rod receiving device via two bearings, and the rotating shafts 220 on the two end caps 200 extend into the two bearings respectively.

[0036] The end cap 200 can be integrally cast or machined. Integral casting improves the connection strength between the cap 210 and the pivot 220 and reduces the probability of the pivot 220 breaking at the connection point with the cap 210.

[0037] Optionally, the diameter of the shaft 220 is smaller than the diameter of the roller body 100 to facilitate fitting with bearings of appropriate size, thereby reducing the installation space required for the transfer roller 10.

[0038] The transfer roller 10 of this embodiment includes a roller body 100 and end caps 200. The roller body 100 extends along a first direction x, and a cavity 110 extending through the roller body 100 along the first direction x is provided on the roller body 100. Two end caps 200 are respectively located at both ends of the roller body 100 in the first direction x and are detachably connected to the roller body 100. Each end cap 200 includes a cover body 210 and a rotating shaft 220. The cover body 210 is connected to the roller body 100, and the rotating shaft 220 is located on the side of the cover body 210 away from the roller body 100. At least one of the rotating shafts 220 of the two end caps 200 is used to carry a bearing. By providing a cavity 110 extending through the roller body 100, the overall weight of the transfer roller 10 is reduced, thereby reducing the torque impact on the rotating shaft 220, reducing the probability of breakage at the rotating shaft 220, and improving the service life of the transfer roller 10. By making the roller body 100 and the end cover 200 detachably connected, even if the shaft 220 on the end cover 200 breaks, only the end cover 200 needs to be replaced and the roller body 100 can still be used, which improves replacement efficiency and reduces maintenance costs.

[0039] In some embodiments, the roller 100 includes an end face 120, a first inner peripheral surface 130 facing the cavity 110, and a first outer peripheral surface 140 facing away from the cavity 110. The two end faces 120 are located at both ends of the roller 100 in a first direction x and are both connected to the first inner peripheral surface 130 and the first outer peripheral surface 140. The transfer roller 10 also includes a connector (not shown) that connects the roller 100 and the cover 210.

[0040] It should be noted that the cross-sectional shape of the roller 100 is always axisymmetric. The roller 100 has a central axis, and the direction of extension of the central axis is the first direction x in the figure. The roller 100 is a cylindrical structure, therefore it has two circumferential surfaces: the outer circumferential surface of the outer wall and the inner circumferential surface of the inner wall. The axial direction of the roller 100 refers to the direction of extension of the central axis, the circumferential direction refers to the circumferential direction of the outer perimeter of the cylinder, and the radial direction refers to the direction through the central axis in the radial plane, usually also referring to a straight line along the diameter or radius, or a straight line perpendicular to the central axis. The radial dimension generally refers to the radius or diameter of the axisymmetric part, and the circumferential dimension generally refers to the circumference of the axisymmetric part. It can be understood that in this application, the axial, circumferential, radial, and circumferential surfaces of other components can be referred to the aforementioned description of the roller 100.

[0041] Optionally, the connecting element is a bolt, and the cover 210 and the roller 100 are connected by multiple bolts.

[0042] In some embodiments, the cover 210 includes a first connecting surface 211, which is disposed intersecting with a first direction x, and at least a portion of the first connecting surface 211 abuts against the end face 120. Preferably, the first connecting surface 211 is disposed perpendicular to the first direction x.

[0043] Optionally, the first connecting surface 211 is provided with a first through hole 212 that penetrates the cover 210 along the first direction x, and the end face 120 is provided with a first connecting hole 121 that extends along the first direction x. The connector connects the cover 210 and the roller 100 through the first through hole 212 and the first connecting hole 121.

[0044] Optionally, multiple first through holes 212 are arranged around the axis of the cover 210, and multiple first connecting holes 121 are arranged around the axis of the roller 100. The number of first through holes 212 and first connecting holes 121 are the same and they are arranged in a one-to-one correspondence.

[0045] In this embodiment of the application, the transfer roller 10 is designed so that the cover 210 and the roller 100 are connected at their end faces perpendicular to the first direction x, so that no bolts are exposed on the first outer peripheral surface 140 of the roller 100, thereby reducing the radial dimension of the transfer roller 10. At the same time, it can also reduce the docking accuracy requirements of the end cover 200 and the roller 100 and improve the assembly efficiency.

[0046] Please refer to Figure 3 , Figure 3 A cross-sectional schematic diagram of another example of a transfer roller is shown.

[0047] like Figure 3 As shown, in some embodiments, the cover 210 has a central axis extending along a first direction x and a first circumferential surface 213 surrounding the central axis. At least a portion of the cover 210 extends into the cavity 110, and at least a portion of the first circumferential surface 213 abuts against the first inner circumferential surface 130. The first circumferential surface 213 is the outer circumferential surface of the cover 210.

[0048] Optionally, the roller body 100 is provided with a second through hole 150 that penetrates the roller body 100 radially, and the first circumferential surface 213 is provided with a second connecting hole 214 that extends radially along the cover body 210. The connector connects the cover body 210 and the roller body 100 through the second through hole 150 and the second connecting hole 214.

[0049] Optionally, multiple second through holes 150 are arranged around the axis of the roller body 100, and multiple second connecting holes 214 are arranged around the axis of the cover body 210. The number of second through holes 150 and second connecting holes 214 are the same and they are arranged in a one-to-one correspondence.

[0050] Optionally, the second through hole 150 is a countersunk hole, which can prevent the connector from being exposed on the first outer peripheral surface 140 when the connector connects the cover 210 and the roller 100, so that the connector will not affect the radial dimension of the transfer roller 10.

[0051] The transmission roller 10 of this application embodiment increases the radial support force of the roller body 100 on the end cover 200 by having at least a portion of the cover 210 extend into the cavity 110 and at least a portion of the first circumferential surface 213 abut against the first inner circumferential surface 130, while reducing the lateral shear force on the connector and lowering the probability of radial separation of the end cover 200 from the roller body 100 due to connector breakage.

[0052] Please refer to Figure 4 , Figure 4 A cross-sectional schematic diagram of another example of a transfer roller is shown.

[0053] like Figure 4 As shown, in some embodiments, the cover 210 has a central axis extending along a first direction x, the cover 210 includes a sleeve 215, the sleeve 215 includes a second inner circumferential surface 216 and a second outer circumferential surface 217 surrounding the central axis, at least a portion of the sleeve 215 surrounds the first outer circumferential surface 140, and at least a portion of the first outer circumferential surface 140 abuts against the second inner circumferential surface 216.

[0054] Optionally, the sleeve 215 is provided with a third through hole 218 that penetrates the sleeve 215 radially, and the first outer peripheral surface 140 is provided with a third connecting hole 141 that extends radially along the roller body 100. The connector connects the cover body 210 and the roller body 100 through the third through hole 218 and the third connecting hole 141.

[0055] Optionally, multiple third connecting holes 141 are arranged around the axis of the roller body 100, and multiple third through holes 218 are arranged around the axis of the cover body 210. The number of third through holes 218 and third connecting holes 141 are the same and they are arranged in a one-to-one correspondence.

[0056] Optionally, the third through hole 218 is a countersunk hole, which can prevent the connector from being exposed on the second outer peripheral surface 217 when the connector is connected to the cover 210 and the roller 100, so that the connector will not affect the radial dimension of the transfer roller 10.

[0057] Optionally, the third connecting hole 141 can also be a through hole, that is, the third connecting hole 141 extends radially through the roller body 100, so that the third connecting hole 141 connects the first inner peripheral surface 130 and the first outer peripheral surface 140.

[0058] The transfer roller 10 of this application embodiment improves the radial connection strength between the end cap 200 and the roller body 100 by having at least a portion of the sleeve 215 surround the first outer peripheral surface 140 and at least a portion of the first outer peripheral surface 140 abut against the second inner peripheral surface 216, while reducing the transverse shear force on the connector and reducing the probability of radial separation of the end cap 200 and the roller body 100 due to connector breakage.

[0059] In some embodiments, the connection between the cover 210 and the rotating shaft 220 is transitioned by a rounded corner, the radius of which is greater than or equal to 0.1 mm and less than or equal to 0.5 mm. Preferably, the radius of the rounded corner is 0.3 mm.

[0060] Optionally, the bearing edge carried by the rotating shaft 220 is also rounded, and the rounded corner size on the bearing is consistent with the rounded corner size on the rotating shaft 220, in order to improve the assembly accuracy of the bearing and the rotating shaft 220.

[0061] The transmission roller 10 of this application embodiment uses a rounded transition at the connection between the cover 210 and the rotating shaft 220 to disperse stress, reduce stress concentration at the connection between the cover 210 and the rotating shaft 220, and reduce the probability of breakage at the connection between the rotating shaft 220 and the cover 210.

[0062] In some embodiments, the diameters of the left and right ends of the first outer peripheral surface 140 in the first direction x are not necessarily the same. For example, the first outer peripheral surface 140 includes equal-diameter portions and variable-diameter portions arranged along the first direction x. The diameters of the equal-diameter portions are all equal, and the diameters of the variable-diameter portions gradually increase towards the equal-diameter portions. This arrangement makes it easy to distinguish the left and right sides of the roller body 100, and also facilitates the installation of the roller body 100.

[0063] Similarly, the lengths of the rotating shafts 220 on the two end caps 200 in the first direction x can be different. This setting makes it easier to distinguish the left and right sides of the two end caps 200, reducing the probability of personnel installing them incorrectly.

[0064] An embodiment of the second aspect of this application also provides a filter rod receiving device (not shown), including a transfer roller 10 of any of the first aspect embodiments described above, the transfer roller 10 being used to drive the filter rod to move. Since the filter rod receiving device provided in the second aspect of this application includes the transfer roller 10 of any of the above embodiments, the filter rod receiving device provided in the second aspect of this application has the beneficial effects of the transfer roller 10 of any of the above embodiments, which will not be elaborated further here.

[0065] The filter rod receiving device includes a longitudinal transmission mechanism and a transverse transmission mechanism. The longitudinal transmission mechanism includes a conveyor rail and an accelerator. The conveyor rail is connected to the filter rod transmitter and is used to receive the filter rods emitted by the transmitter and longitudinally transmit them to the accelerator. The conveyor rail has an arc-shaped structure, which allows the filter rods to gain acceleration as they pass through the rail due to the arc shape, their own gravity, and inertia. The filter rods are pre-accelerated at the conveyor rail and then mechanically accelerated by the accelerator, thereby improving the acceleration efficiency of the longitudinal transmission mechanism and reducing energy consumption.

[0066] Optionally, the longitudinal transmission mechanism also includes a speed reducer located on the side of the conveyor rail away from the speed booster. The filter rods emitted by the filter rod transmitter are first slowed down by the speed reducer, and then accelerated by the conveyor rail and the speed booster to increase the distance between adjacent filter rods and avoid the distance between adjacent filter rods being too close, which could cause blockage during the transmission process.

[0067] Optionally, the transverse conveying mechanism includes a conveying roller group, which comprises multiple transversely arranged conveying rollers 10. Among these, the rollers connected to the motor are drive rollers, and the rollers not connected to the motor are driven rollers. The drive rollers provide the main driving force in the conveying roller group, while the driven rollers only serve to guide the filter rods. Both the drive rollers and the driven rollers can be the aforementioned conveying rollers 10.

[0068] Optionally, the transverse conveying mechanism also includes a rotary guide and a filter rod hopper. The rotary guide connects the accelerating component and the conveying roller assembly, and the filter rod hopper is located on the side of the conveying roller assembly opposite to the rotary guide. The filter rods conveyed by the accelerating component are then guided by the rotary guide to change their horizontal vertical movement to horizontal transverse movement. The filter rods are then neatly conveyed into the filter rod hopper by the conveying roller assembly, and finally conveyed to the winding and splicing unit by the filter rod hopper. This improves the stability of the filter rod conveying and further enhances the receiving performance and quality of the filter rod receiving device.

[0069] Optionally, the transverse transmission mechanism includes two sets of transmission rollers arranged vertically, and the longitudinal transmission mechanism includes two conveyor rails respectively connected to the two transmission roller sets. This enables the receiving of filter rods through at least two sets of receiving channels, each operating relatively independently without affecting the others. If one receiving channel fails, it will not affect the operation of the other receiving channel, ensuring that the filter rod receiving device receives a continuous supply of filter rods.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0071] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A transfer roller, characterized in that, include: A roller body extends along a first direction, and the roller body is provided with a cavity that extends through the roller body along the first direction; The two end caps are respectively located at both ends of the roller body in the first direction and are detachably connected to the roller body. The end cap includes a cover body and a rotating shaft. The cover body is connected to the roller body, and the rotating shaft is located on the side of the cover body away from the roller body. At least one of the rotating shafts of the two end caps is used to carry a bearing.

2. The transfer roller according to claim 1, characterized in that, The roller body includes an end face, a first inner peripheral surface facing the cavity, and a first outer peripheral surface away from the cavity. The two end faces are respectively located at both ends of the roller body in the first direction and are both connected to the first inner peripheral surface and the first outer peripheral surface. The transfer roller also includes a connector that connects the roller body and the cover.

3. The transfer roller according to claim 2, characterized in that, The cover includes a first connecting surface, which is disposed intersecting with the first direction, and at least a portion of the first connecting surface abuts against the end face.

4. The transfer roller according to claim 3, characterized in that, The first connecting surface is provided with a first through hole that penetrates the cover body along the first direction, and the end face is provided with a first connecting hole that extends along the first direction. The connector connects the cover body and the roller body through the first through hole and the first connecting hole.

5. The transfer roller according to claim 2, characterized in that, The cover has a central axis extending along the first direction and a first circumferential surface surrounding the central axis. At least a portion of the cover extends into the cavity, and at least a portion of the first circumferential surface abuts against the first inner circumferential surface.

6. The transfer roller according to claim 5, characterized in that, The roller body is provided with a second through hole that penetrates the roller body radially, and the first circumferential surface is provided with a second connecting hole that extends radially along the cover body. The connector connects the cover body and the roller body through the second through hole and the second connecting hole.

7. The transfer roller according to claim 2, characterized in that, The cover has a central axis extending along the first direction. The cover includes a sleeve, which includes a second inner circumferential surface and a second outer circumferential surface surrounding the central axis. At least a portion of the sleeve surrounds the first outer circumferential surface, and at least a portion of the first outer circumferential surface abuts against the second inner circumferential surface.

8. The transfer roller according to claim 7, characterized in that, The sleeve is provided with a third through hole that penetrates the sleeve radially, and the first outer peripheral surface is provided with a third connecting hole that extends radially along the roller body. The connector connects the cover body and the roller body through the third through hole and the third connecting hole.

9. The transfer roller according to claim 1, characterized in that, The connection between the cover and the rotating shaft is achieved through a rounded corner, the radius of which is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

10. A filter rod receiving device, characterized in that, Includes a transfer roller as described in any one of claims 1 to 9, the transfer roller being used to drive the filter rod to move.

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