Aluminum core silica gel brush head unit and tobacco machinery maintenance-free cleaning brush with same

Abstract

The utility model relates to an aluminum core silica gel brush head unit and a tobacco machinery maintenance-free cleaning brush with the same. The aluminum core silica gel brush head unit comprises a cast aluminum core and a silica gel brush head assembly, the cast aluminum core is cylindrical, a shaft hole penetrating through the two ends of the cast aluminum core is coaxially formed in the cast aluminum core, the silica gel brush head assembly is installed on the periphery of the cast aluminum core, and embedded positioning structures are arranged at the two ends of the cast aluminum core respectively. The maintenance-free cleaning brush for the tobacco machinery comprises a plurality of aluminum core silica gel brush head units, a rotating shaft and two end limiting locking pieces, the rotating shaft is sleeved with the aluminum core silica gel brush head units respectively, the ends of every two adjacent aluminum core silica gel brush head units are connected through an embedded positioning structure, and the number of the end limiting locking pieces is two. The two end limiting locking pieces are detachably fixed to the two ends of the rotating shaft respectively and abut against the aluminum core silica gel brush head units located at the two ends respectively. The utility model has the advantages that the silica gel brush head assembly and the cast aluminum core are convenient to assemble, the units are easy to combine, and the brush head cannot fall off, clamp materials and contaminate the materials during use.

Description

TECHNICAL FIELD

[0001] The utility model relates to tobacco machinery technical field, especially a kind of aluminium core silica gel brush head unit and tobacco machinery maintenance-free cleaning brush with it. BACKGROUND

[0002] At present, the manufacturing mode of the cleaning roller brush of the existing tobacco machinery is as follows: a hole is punched on the surface of a plastic roller by a machine, then one end of a brush bundle (or a brush filament bundle, many plastic brush hairs or brush filaments are usually bundled) is inlaid and fixed in the hole, then a roller brush shaft is sleeved in the middle of the plastic roller to be fixed, to form a cleaning roller brush. Such cleaning roller brush has the following shortcomings:

[0003] 1) The plastic brush filament will gradually age, break or shed with the increase of use time, which will fall into the material (tobacco leaf) during operation, and greatly affect the quality of the material.

[0004] 2) Material clamping in the brush filament bundle will occur, especially for the material with high moisture content, which is very easy to clamp material debris between the brush hairs (or brush filaments), which will pollute the cleaning roller brush, and further pollute the material, and long-term use may also produce mold, etc., which seriously affects the quality of the material.

[0005] Therefore, it is necessary to develop an aluminium core silica gel brush head unit and tobacco machinery maintenance-free cleaning brush with it to overcome the above technical problems. CONTENT OF UTILITY MODEL

[0006] The utility model solves the technical problem of providing an aluminium core silica gel brush head unit and tobacco machinery maintenance-free cleaning brush, which effectively overcomes the defects of the prior art.

[0007] The technical solution of the utility model to solve the above technical problem is as follows:

[0008] An aluminium core silica gel brush head unit includes a cast aluminium aluminium core and a silica gel brush head assembly. The cast aluminium aluminium core is cylindrical, and has an axial hole penetrating through both ends. The silica gel brush head assembly is mounted on the outer periphery of the cast aluminium aluminium core. The two ends of the cast aluminium aluminium core are respectively provided with inlaid positioning structures.

[0009] On the basis of the above technical solution, the utility model can also be improved as follows.

[0010] Further, the silica gel brush head assembly comprises a plurality of brush head groups, each of which comprises a cast aluminum support in the shape of a straight strip and a brush head in the shape of a straight strip, the brush head comprising a long straight silica gel block and a plurality of first silica gel strips vertically arranged on one side of the silica gel block along the length direction, the first silica gel strips being columnar members, one side of the cast aluminum support being provided with a fitting groove along the length direction, the silica gel block being fitted into the fitting groove, a plurality of positioning grooves extending in the axial direction being equidistantly and circumferentially arranged on the outer periphery of the cast aluminum core, the cast aluminum supports being fitted into the positioning grooves one by one, the first silica gel strips being exposed outside the cast aluminum core and extending in the radial direction of the cast aluminum core, and the first silica gel strips in adjacent two brush head groups being staggered along the long axis direction of the cast aluminum core.

[0011] Further, the positioning grooves are T-shaped grooves or dovetail grooves, and the cross-sectional outer contour of the cast aluminum support is T-shaped or dovetail-shaped.

[0012] Further, both sides of the fitting groove are integrally provided with inclined fitting portions, and the fitting portions are embedded into the inside of the side end of the silica gel block.

[0013] Further, the silica gel brush head assembly comprises a silica gel sleeve formed by pressure molding outside the cast aluminum core and a second silica gel head in the shape of a cuboid block integrally formed outside the silica gel sleeve and equidistantly and circumferentially arranged, the second silica gel head extending in the radial direction of the cast aluminum core and extending to both end portions of the cast aluminum core at both ends thereof.

[0014] Further, a plurality of convex ridges extending in the axial direction are equidistantly and circumferentially arranged on the outer periphery of the cast aluminum core, and the convex ridges are embedded into the inner surface of the silica gel sleeve.

[0015] Further, the inlaid positioning structure comprises positioning holes respectively arranged at both end portions of the cast aluminum core.

[0016] Further, a plurality of positioning grooves are circumferentially arranged at one end portion of the cast aluminum core, and a positioning block corresponding to the positioning grooves is arranged at the other end portion, and the positioning grooves and the positioning block constitute the inlaid positioning structure.

[0017] The beneficial effects are that the structure design is reasonable, the silica gel brush head assembly and the cast aluminum core are convenient to assemble, the units are easy to combine, and the units will not fall off or clamp materials during use.

[0018] A maintenance-free cleaning brush for tobacco machinery is also provided, comprising an aluminum core silicone brush head unit, a rotating shaft, and end limiting locking components. Multiple aluminum core silicone brush head units are respectively mounted on the rotating shaft. The ends of two adjacent aluminum core silicone brush head units are connected by an inlay positioning structure. Two end limiting locking components are provided and are detachably fixed at both ends of the rotating shaft. The two end limiting locking components abut against the aluminum core silicone brush head units located at both ends.

[0019] Based on the above technical solution, the present invention can be further improved as follows.

[0020] Furthermore, the aforementioned end-limiting locking component is a ring-shaped component, and the aforementioned end-limiting locking component is fitted onto the corresponding end of the aforementioned rotating shaft. The aforementioned end-limiting locking component is provided with a radially penetrating threaded hole, and a set screw that abuts against the aforementioned rotating shaft is threaded in the threaded hole.

[0021] The benefits are that the entire cleaning brush is easy to disassemble and assemble, and the aluminum core silicone brush head unit is easy to replace and maintain. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the aluminum core silicone brush head unit of this utility model;

[0023] Figure 2 This is a schematic diagram of the brush head assembly in one embodiment of the aluminum core silicone brush head unit of this utility model;

[0024] Figure 3 This is a schematic diagram of another embodiment of the aluminum core silicone brush head unit of this utility model. Figure 1 ;

[0025] Figure 4 This is a schematic diagram of another embodiment of the aluminum core silicone brush head unit of this utility model. Figure 2 ;

[0026] Figure 5 This is a schematic diagram of the structure of the maintenance-free cleaning brush for tobacco machinery of this utility model. Figure 1 ;

[0027] Figure 6 This is a schematic diagram of the structure of the maintenance-free cleaning brush for tobacco machinery of this utility model. Figure 2 ;

[0028] Figure 7 This is a schematic diagram of the assembly of the brush head group and the cast aluminum core in the aluminum core silicone brush head unit of this utility model.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1, cast aluminum aluminum core; 2, silica gel brush head assembly; 3, end position locking piece; 11, shaft hole; 12, convex ridge; 21, brush head group; 22, silica gel sleeve; 23, second silica gel head; 111, positioning hole; 112, positioning block; 211, cast aluminum support; 212, silica gel block; 213, first silica gel strip; 2111, fitting part. DETAILED DESCRIPTION

[0031] The principles and features of the present application are described below in conjunction with the accompanying drawings, and the examples are used only to explain the present application and are not intended to limit the scope of the present application.

[0032] Example 1

[0033] As shown in Figure 1 , 3 , the aluminum core silica gel brush head unit of the present embodiment includes a cast aluminum aluminum core 1 and a silica gel brush head assembly 2. The cast aluminum aluminum core 1 is cylindrical, and a shaft hole extending through both ends is coaxially arranged inside. The silica gel brush head assembly 2 is mounted on the outer periphery of the cast aluminum aluminum core 1. The two ends of the cast aluminum aluminum core 1 are respectively provided with an inlaid positioning structure.

[0034] In the present embodiment, the cast aluminum aluminum core 1 is formed by pouring aluminum water into a mold, which is light in weight and structurally strong. Then, the silica gel brush head assembly 2 is formed on the cast aluminum aluminum core 1.

[0035] The aluminum core silica gel brush head unit of the present embodiment includes at least the following two structural forms:

[0036] 1) As shown in Figure 1 , 2 , the silica gel brush head assembly 2 includes a plurality of brush head groups 21. Each brush head group 21 includes a cast aluminum support 211 and a straight strip-shaped brush head. The brush head includes a long straight silica gel block 212 and a plurality of first silica gel strips 213 vertically arranged on one side of the silica gel block 212 along the length direction. The first silica gel strip 213 is a columnar member. One side of the cast aluminum support 211 is provided with a fitting groove along the length direction. The silica gel block 212 is fitted into the fitting groove. A plurality of positioning grooves extending in the axial direction are formed on the outer periphery of the cast aluminum aluminum core 1 at equal intervals in the circumferential direction. The cast aluminum supports 211 are fitted one by one into the positioning grooves. The first silica gel strips 213 are exposed outside the cast aluminum aluminum core 1 and extend in the radial direction of the cast aluminum aluminum core 1.

[0037] In the above scheme 1), the plurality of brush head groups 21 are embedded in the positioning groove b on the surface of the cast aluminum core 1. Specifically, the positioning groove penetrates through both ends of the cast aluminum core 1, the brush head group 21 is inserted from one end of the positioning groove along the axial direction, and is slowly pushed into the positioning groove until it is fixed (the fixed manner can be interference assembly or adhesive connection). The brush head group 21 is made of the same material as the cast aluminum core 1, and the two are easily assembled. During assembly, the silicone block 212 of the straight strip-shaped brush head is first embedded in the embedding groove of the cast aluminum support 211 to fix the two, and then the cast aluminum support 211 with the brush head is assembled into the positioning groove on the surface of the cast aluminum core 1. The first silicone strip 213 is a columnar member, which can be a square column, a circular column, or a conical column. Compared with traditional brush hairs or brush filaments, the first silicone strip 213 is not easy to break, has better cleaning effect, and will not have the problem of material clamping.

[0038] Based on scheme 1), the positioning groove is a T-shaped groove or a dovetail groove, and the cross-sectional profile of the cast aluminum support 211 is T-shaped or dovetail-shaped. This design makes the cast aluminum support 211 assembled into the positioning groove, and due to the matching of the structure shapes, the two will not fall off along the radial direction, the assembly is relatively tight, and the structure is stable after assembly.

[0039] The first silicone strips 213 in the adjacent two brush head groups are staggered along the long axis direction of the cast aluminum core 1.

[0040] It should be particularly noted that the cast aluminum support 211 can not be needed in the brush head. The cross-sectional shape of the positioning groove near the center of the cast aluminum core 1 can be designed as a circular arc or a semispherical shape (as shown in Figure 7 The part of the silicone block 212 embedded in the positioning groove can also be designed as a circular arc or a semispherical shape, so that the two can be tightly assembled and will not easily fall off.

[0041] In the embodiment, the two sides of the embedding groove are respectively integrally provided with inclined embedding parts 2111, and the embedding parts 2111 are embedded in the inside of the side end of the silicone block 212. The embedding parts 2111 are made of the same material as the cast aluminum support 211, and are integrally formed. The embedding of the side end of the silicone block 212 makes the two tightly combined and will not fall off.

[0042] 2) as shown in Figure 3 and 4 The silicone brush head assembly 2 includes a silicone sleeve 22 molded on the outside of the cast aluminum core 1 and a long rectangular block-shaped second silicone head 23 integrally molded on the outside of the silicone sleeve 22 and spaced apart in the circumferential direction. The second silicone head 23 extends in the radial direction of the cast aluminum core 1, and the two ends thereof extend to the two end portions of the cast aluminum core 1.

[0043] In the above-mentioned solution 2), the silica gel sleeve 22 is formed on the outer surface of the cast aluminum core 1 by molding, and the silica gel sleeve 22 and the second silica gel head 23 on the surface thereof are integrally molded. The second silica gel head 23 is designed as a flat cuboid block, which is less likely to be broken compared with traditional bristles or brush wires, has a better cleaning effect, and does not have the problem of clamping materials.

[0044] In this embodiment, the size of the second silica gel head 23 along the long axis direction of the cast aluminum core 1 can also be half the length of each cast aluminum core 1, and adjacent second silica gel heads 23 are staggered in the long axis direction.

[0045] In this embodiment, as shown in Figure 3 and 4 , a plurality of convex ridges 12 extending in the axial direction are arranged on the outer periphery of the cast aluminum core 1 at intervals in the circumferential direction, and the convex ridges 12 are embedded in the inner surface of the silica gel sleeve 22. The design of the convex ridges 12 can make the combination between the cast aluminum core 1 and the silica gel sleeve 22 more compact, and the relative rotation and separation in the radial direction do not occur. The cross-sectional shape of the convex ridges 12 can be designed as a semicircle or other shapes.

[0046] In this embodiment, as shown in Figure 1 , the inlay positioning structure is a positioning hole a arranged at each end of the cast aluminum core 1. The main design purpose of the inlay positioning structure is to enable the adjacent ends to be embedded and positioned when the two cast aluminum cores 1 are assembled, and the combination is more compact. Specifically, when the two cast aluminum cores 1 are assembled at the ends, a positioning pin can be inserted into the two positioning holes.

[0047] In this embodiment, as shown in Figure 3 and 4 , a plurality of positioning grooves 111 are arranged on one end of the cast aluminum core 1 in the circumferential direction, and a positioning block 112 corresponding to the positioning hole is arranged on the other end. The positioning grooves 111 and the positioning block 112 constitute the inlay positioning structure. When the two cast aluminum cores 1 are assembled, the positioning block 112 on one end of each core can be embedded into the positioning groove 111, so that the ends of the two cores are tightly combined.

[0048] It should be particularly emphasized that in this embodiment, the material of the cast aluminum core 1 can also be replaced by other existing materials that are light in weight, structurally strong, corrosion-resistant, and easy to process and produce. In addition, the silica gel brush head can also be replaced by other existing materials that are wear-resistant, high-elastic, and aging-resistant.

[0049] Embodiment 2

[0050] As shown in Figure 5 and 6As shown, the tobacco machinery maintenance-free cleaning brush of the embodiment comprises the aluminum core silica gel brush head unit (denoted as D in the figure) in embodiment 1, a rotating shaft and end position limiting locking members 3. A plurality of the above-mentioned aluminum core silica gel brush head units are sleeved on the rotating shaft (not shown in the figure). The end portions of two adjacent aluminum core silica gel brush head units are connected through inlaid positioning structure. The end position limiting locking members 3 are provided with two and are respectively detachably fixed on the two ends of the rotating shaft. The two end position limiting locking members 3 respectively abut against the aluminum core silica gel brush head units at the two ends.

[0051] When assembling the tobacco machinery maintenance-free cleaning brush of the embodiment, a plurality of aluminum core silica gel brush head units in embodiment 1 are wound on the rotating shaft, the end portions of adjacent aluminum core silica gel brush head units are tightly abutted, and then the end position limiting locking members 3 are respectively installed at the two ends of the rotating shaft for limiting and fixing, which is very fast and convenient.

[0052] In the scheme as shown in Figure 5 , the positioning holes of the end portions of adjacent aluminum core silica gel brush head units are one-to-one corresponding to the counter holes, and the counter holes are positioned by inserting and positioning the positioning pins, or the positioning grooves 111 and the positioning blocks 112 are positioned by being mutually inlaid. According to the use needs, a plurality of brush head groups on the surfaces of adjacent aluminum core silica gel brush head units can be respectively arranged in multiple rows in the axial direction along the circumferential direction, or the plurality of brush head groups on the adjacent aluminum core silica gel brush head units can be staggered distributed in the circumferential direction. Or the brush head groups are distributed in multiple rows in a spiral shape.

[0053] In the scheme as shown in Figure 6 , the positioning holes of the end portions of adjacent aluminum core silica gel brush head units are one-to-one corresponding to the counter holes, and the counter holes are positioned by inserting and positioning the positioning pins, or the positioning grooves 111 and the positioning blocks 112 are positioned by being mutually inlaid. According to the use needs, a plurality of second silica gel heads 23 on the surfaces of adjacent aluminum core silica gel brush head units can be respectively arranged in multiple rows in the axial direction along the circumferential direction, or the plurality of second silica gel heads 23 on the adjacent aluminum core silica gel brush head units can be staggered distributed in the circumferential direction. Or the brush head groups are distributed in multiple rows in a spiral shape.

[0054] In the embodiment, the end position limiting locking members 3 are annular members, the end position limiting locking members 3 are sleeved on the corresponding ends of the rotating shaft, the end position limiting locking members 3 are provided with screw holes penetrating through the radial direction, the tight fixing screws are screwed in the screw holes, the tight fixing screws abut against the cylindrical surface of the rotating shaft, and the end position limiting locking members 3 are very fast and convenient to disassemble and assemble. Of course, the tightening bolts threadedly connected with the end position limiting locking members 3 can be provided with penetrating through the outer periphery of the end position limiting locking members 3, and the combination of the threads and the bolts is used for fixedly connecting the end position limiting locking members 3, so that the end position limiting locking members 3 are more firmly assembled.

[0055] It needs to be particularly emphasized that the brush head is provided with the first silica gel strip 213 or the second silica gel head 23 with large size, the sweeping range is larger, and there is almost no dead angle in the axial direction, and there is no risk of clamping, breaking, falling, etc.

[0056] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0057] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0058] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0060] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0061] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. An aluminum core silicone bristle head unit, characterized by: The application relates to an aluminum core silica gel brush head assembly, which comprises a cast aluminum aluminum core (1) and a silica gel brush head assembly (2), the cast aluminum aluminum core (1) is cylindrical, an axial hole is arranged in the cast aluminum aluminum core (1) and extends through two ends of the cast aluminum aluminum core (1), the silica gel brush head assembly (2) is arranged on the outer periphery of the cast aluminum aluminum core (1), and embedding positioning structures are arranged at the two ends of the cast aluminum aluminum core (1) respectively.

2. The aluminum core silicone bristle head unit of claim 1, wherein: The silica gel brush head assembly (2) comprises a plurality of brush head groups (21), each brush head group (21) comprises a cast aluminum support (211) in a straight strip shape and a brush head, the brush head comprises a long and straight silica gel block (212) and a plurality of first silica gel strips (213) vertically arranged on one side of the silica gel block (212) along the length direction, the first silica gel strip (213) is a columnar member, one side of the cast aluminum support (211) is provided with an embedding groove along the length direction, the silica gel block (212) is embedded in the embedding groove, a plurality of axial positioning grooves are formed on the outer periphery of the cast aluminum aluminum core (1) along the circumferential direction at equal intervals, the cast aluminum supports (211) are embedded in the positioning grooves one by one, the first silica gel strips (213) are exposed outside the cast aluminum aluminum core (1) and extend along the radial direction of the cast aluminum aluminum core (1), and the first silica gel strips (213) in adjacent two brush heads are staggered along the long axis direction of the cast aluminum aluminum core (1).

3. An aluminum core silicone bristle head unit according to claim 2, wherein: The positioning groove is a T-shaped groove or a dovetail groove, and the cross section of the cast aluminum support (211) is T-shaped or dovetail-shaped.

4. The aluminum core silicone bristle head unit of claim 2, wherein: The embedding groove is integrally provided with inclined embedding parts (2111) on two sides respectively, and the embedding parts (2111) are embedded in the inner part of the side end of the silica gel block (212).

5. The aluminum core silicone bristle head unit of claim 1, wherein: The silica gel brush head assembly (2) comprises a silica gel sleeve (22) which is pressure-molded on the cast aluminum aluminum core (1) and a cuboid-shaped second silica gel head (23) which is integrally formed on the silica gel sleeve (22) and is distributed along the circumferential direction at intervals, the second silica gel head (23) extends along the radial direction of the cast aluminum aluminum core (1) and extends to the two end parts of the cast aluminum aluminum core (1) respectively.

6. An aluminum core silicone bristle head unit according to claim 5, wherein: A plurality of convex ridges (12) extending along the axial direction are arranged on the outer periphery of the cast aluminum aluminum core (1) at intervals along the circumferential direction, and the convex ridges (12) are embedded in the inner surface of the silica gel sleeve (22).

7. An aluminum cored silicone brush head unit according to any one of claims 2 to 6, characterized in that: The embedding positioning structure is a positioning hole arranged at the two end parts of the cast aluminum aluminum core (1) respectively.

8. An aluminum core silicone bristle head unit according to claim 7, characterized in that: The one end part of the cast aluminum aluminum core (1) is provided with a plurality of positioning grooves (111) along the circumferential direction, and the other end part is provided with positioning blocks (112) corresponding to the positioning holes one by one, and the positioning grooves (111) and the positioning blocks (112) constitute the embedding positioning structure.

9. A tobacco machinery maintenance free cleaning brush characterized by: The application further relates to an aluminum core silica gel brush head assembly, which comprises a plurality of aluminum core silica gel brush head units, a rotating shaft and end part limiting locking members (3), the aluminum core silica gel brush head units are sleeved on the rotating shaft, the end parts of adjacent two aluminum core silica gel brush head units are connected through the embedding positioning structure, the end part limiting locking members (3) are arranged at two ends of the rotating shaft respectively and are detachably fixed, and the end part limiting locking members (3) are in abutment with the aluminum core silica gel brush head units at the two ends respectively.

10. A tobacco machinery maintenance-free cleaning brush according to claim 9, characterised in that: The end position locking member (3) is a ring-shaped member, which is sleeved on the corresponding end of the rotating shaft, and is provided with a screw hole penetrating through it in the radial direction, and a tight screw is screwed in the screw hole and abuts against the rotating shaft.

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