Rubbing wheel end cover for rubbing wheel assembly of cigarette making and plug assembling machine, rubbing wheel assembly and cigarette making and plug assembling machine

Abstract

The present disclosure relates to a rubbing wheel end cap for a rubbing wheel assembly of a cigarette making and plug assembling machine, the rubbing wheel end cap comprising: a disc-shaped base body having a protrusion protruding from one end face of the disc-shaped base body; the disc-shaped base body is characterized in that the disc-shaped base body is further provided with a plurality of long holes which are formed in the peripheral area of the disc-shaped base body and distributed in the circumferential direction of the disc-shaped base body; the disc-shaped base body is further provided with a plurality of through holes which are formed in the inner circumferential area of the disc-shaped base body and distributed in the circumferential direction of the disc-shaped base body, at least one of the through holes is a positioning hole, and the other through holes are round holes. The utility model further relates to a rolling wheel assembly for the cigarette making and plug assembling machine and the cigarette making and plug assembling machine. Therefore, relevant parts of the drum wheel do not need to be disassembled and calibrated by using a measuring rod, and meanwhile, the matching precision can be ensured not to be changed when the rubbing wheel assembly is installed. Therefore, the working efficiency during disassembly and assembly of the rolling wheel assembly can be improved, the maintenance difficulty is reduced, and the matching precision of the rolling wheel and other parts is ensured.

Description

Technical Field

[0001] This disclosure relates to cigarette manufacturing in the tobacco industry, and in particular to a roller end cap for a roller assembly used in a cigarette rolling machine, a roller assembly, and a cigarette rolling machine. Background Technology

[0002] In the cigarette manufacturing process, most cigarettes are made by using a rolling wheel to twist and join the cigarette, filter, and tipping paper to obtain a qualified filter cigarette.

[0003] The cleanliness and phase accuracy of the cigarette rolling roller are key factors affecting the quality of cigarette rolling. Therefore, the rolling roller needs to be disassembled regularly for cleaning, maintenance, and repair, and its phase needs to be readjusted when the rolling roller is reinstalled after disassembly.

[0004] Currently, adjusting the phase of the roller chuck requires disassembling the relevant components of the upper drum and aligning it with the upper drum using a gauge of the appropriate specification. This type of roller chuck phase adjustment is labor-intensive and time-consuming, resulting in low work efficiency. Furthermore, the accuracy of this adjustment often fails to achieve the original fit accuracy. Utility Model Content

[0005] In view of this, the purpose of this disclosure is to provide a roller assembly for a winding machine and a corresponding winding machine, which is not only easy to disassemble, but also easy to adjust the phase of the rollers and has high adjustment accuracy, thereby improving work efficiency.

[0006] One aspect of this disclosure relates to a roller end cap for a roller assembly of a winding machine, the roller end cap comprising a disc-shaped base having a protrusion projecting from one end face of the disc-shaped base, the protrusion being capable of engaging with a recess in the roller of the roller assembly; characterized in that the disc-shaped base further has a plurality of elongated holes arranged in the outer peripheral region of the disc-shaped base and distributed along the circumferential direction of the disc-shaped base, the plurality of elongated holes being alignable with a plurality of first fastening holes of the roller respectively; the disc-shaped base further has a plurality of through holes arranged in the inner peripheral region of the disc-shaped base and distributed along the circumferential direction of the disc-shaped base, at least one of the through holes being configured as a first positioning hole, the other through holes being configured as circular holes, the circular holes being alignable with corresponding second fastening holes of a drive shaft, and the first positioning holes being alignable with corresponding second positioning holes of the drive shaft.

[0007] Therefore, by setting positioning holes, the end cap of the rubbing roller can be positioned relative to the drive shaft, and thus relative to the corresponding drum. Then, the relative position of the rubbing roller and the end cap can be adjusted using elongated holes, thereby adjusting the phase of the rubbing roller. Therefore, it is unnecessary to disassemble the relevant components of the drum and use a measuring rod for calibration as in existing technologies, while ensuring consistent fit accuracy during rubbing roller assembly installation. This improves the efficiency of rubbing roller assembly disassembly and assembly, reduces maintenance difficulty, and ensures the fit accuracy between the rubbing roller and other components.

[0008] In some embodiments, the first positioning hole is constructed as a circular hole, but has a different size than a circular hole. This allows for a simple distinction between the positioning hole and the circular hole, thereby facilitating manufacturing and saving costs.

[0009] In some embodiments, the outer periphery of the free end face of the protrusion has a first chamfer; and / or the protrusion protrudes centrally from one end face of the disc-shaped base. This facilitates the installation and alignment of the roller end cap.

[0010] In some embodiments, the plurality of elongated holes are evenly distributed at equal intervals along the circumferential direction of the disc-shaped substrate; and / or the plurality of through holes are evenly distributed at equal intervals along the circumferential direction of the disc-shaped substrate. This facilitates the installation and alignment of the roller end cap.

[0011] In some embodiments, a first screw is provided, and the rubbing wheel and the rubbing wheel end cap can be fastened together through the first screw, the plurality of elongated holes of the rubbing wheel end cap, and the plurality of first fastening holes of the rubbing wheel. This allows for simple assembly of the rubbing wheel and the rubbing wheel end cap.

[0012] In some embodiments, a second screw is provided, through which the roller end cap and the drive shaft can be fastened together. This allows for simple assembly of the roller end cap and the drive shaft.

[0013] In some embodiments, a positioning pin is provided, through which the roller end cap and the drive shaft can be fixedly positioned relative to each other via the positioning pin, the first positioning hole of the roller end cap, and the corresponding second positioning hole of the drive shaft. This allows for a simple and consistent maintenance of the relative position between the roller end cap and the drive shaft.

[0014] In some embodiments, the locating pin includes a first portion capable of being fastened to a corresponding second locating hole of the drive shaft and a second portion capable of engaging with the first locating hole of the roller end cap. This allows for a simple implementation of the locating pin.

[0015] In some embodiments, the first portion of the locating pin is constructed as a cylinder with external threads, and / or the second portion of the locating pin is constructed as a cylinder with a smooth outer circumferential surface, and the size of the second portion corresponds to the size of the first locating hole in the end cap of the roller. This allows the locating pin to be easily replaced and enables precise positioning.

[0016] In some embodiments, the outer periphery of the free end face of the second portion of the locating pin has a second chamfer. This facilitates the installation and alignment of the locating pin.

[0017] In some embodiments, the second portion of the locating pin has a mounting groove that mates with an installation tool. This allows for easy installation of the locating pin.

[0018] Another aspect of this disclosure relates to a roller assembly for a winding machine, characterized in that the roller assembly includes a roller and a roller end cap according to this disclosure; the roller includes a recess and a plurality of first fastening holes, the protrusion of the roller end cap is capable of engaging with the recess, and the plurality of elongated holes of the roller end cap are respectively aligned with the plurality of first fastening holes. The roller assembly according to this disclosure also correspondingly offers the same advantages as the roller end cap according to this disclosure, which will not be elaborated further here.

[0019] Another aspect of this disclosure relates to a winding machine, characterized in that the winding machine includes a roller end cap according to this disclosure or a roller assembly according to this disclosure and a drive shaft; the drive shaft includes a corresponding second fastening hole alignable with the circular hole of the roller end cap and a corresponding second positioning hole alignable with the first positioning hole of the roller end cap. The winding machine according to this disclosure also correspondingly offers the same advantages as the roller end cap according to this disclosure, which will not be elaborated further here.

[0020] In some embodiments, the corresponding second fastening hole and the corresponding second positioning hole of the drive shaft are located on the flange of the drive shaft. This allows for simple assembly of the roller end cap and the drive shaft.

[0021] Based on the end cap, roller assembly, and coiling machine provided in this disclosure, the problem of needing to use a measuring rod of the appropriate specification to calibrate the phase of the roller assembly during disassembly and assembly, and the difficulty in achieving the original fit accuracy with the adjusted precision, resulting in a large workload, long time consumption, and reduced work efficiency, is solved. This improves the maintenance efficiency of roller phase adjustment during regular cleaning, maintenance, and repair, reduces maintenance difficulty, and protects other components from frequent disassembly and assembly that could reduce fit accuracy. Attached Figure Description

[0022] To make the above-mentioned objects, features, and advantages of this disclosure more apparent and understandable, the specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. The drawings may not be shown to scale and may even be exaggerated; they are for illustrative purposes only. In the drawings:

[0023] Figure 1A and Figure 1B Schematic rear views and along the sides of the roller end cap of the roller assembly for a winding machine according to embodiments of the present disclosure are shown respectively. Figure 1A A sectional view taken by line AA in the middle;

[0024] Figure 2A and Figure 2B Showing respectively including Figure 1A and Figure 1B Perspective view and front view of a roller assembly for a winding machine according to an embodiment of the present disclosure, showing the roller end cap;

[0025] Figure 3A and Figure 3B A front view and a partially sectional side view of a locating pin according to an embodiment of the present disclosure are shown respectively.

[0026] Figure 4 Show Figure 2A and Figure 2B The roller assembly shown is mounted on the drive shaft along the edge Figure 2B The sectional view is taken by line CC. Detailed Implementation

[0027] Specific details are set forth in the following description to provide a full understanding of this disclosure. However, this disclosure can be implemented in many ways other than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this disclosure. Therefore, this disclosure is not limited to the specific embodiments disclosed below.

[0028] The expression “and / or” as used herein means to include at least one of the components listed before and after the expression. Furthermore, the expression “connection / linkage” as used herein means to include a direct connection to another component or an indirect connection via another component. The singular form in this document also includes the plural form, unless specifically stated in the wording. Moreover, the use of “comprises” or “includes” in this document to refer to a component, step, operation, or element means that at least one other component, step, operation, or element is present or added.

[0029] In the description of the embodiments disclosed herein, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to 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 the embodiments of this application.

[0030] As mentioned at the beginning of this article, the scrubbing wheel needs to be disassembled regularly for cleaning, maintenance and repair, and its phase needs to be readjusted when the scrubbing wheel is reinstalled after disassembly.

[0031] For traditional roller end caps, the roller end cap is connected and fixed to the roller through a circular through hole and corresponding screws to form a roller assembly. Then, the roller end cap is connected and fixed to the drive shaft through an elongated hole and corresponding screws, allowing the roller assembly to be driven to rotate by the drive shaft. When disassembling the roller assembly, the roller and end cap can be removed together by unscrewing the screws connecting the roller end cap to the drive shaft. The roller phase can be adjusted through the elongated hole. However, in this case, after disassembling the relevant components of the upper drum, it is necessary to use a measuring rod of the appropriate specification to align the roller with the upper drum, which is labor-intensive and time-consuming, thus reducing work efficiency. Furthermore, the adjustment accuracy often fails to reach the original fit accuracy.

[0032] In view of this, this disclosure presents a novel end cap for the rubbing roller, which has a positioning hole and a corresponding positioning pin, so that when adjusting the phase of the rubbing roller, the original installation accuracy can be achieved without using a measuring rod to recalibrate the phase of the rubbing roller. In particular, this solves the problem of large workload and long time consumption in aligning the phase of the rubbing roller during the periodic maintenance of the rubbing roller in the cigarette machine rubbing system in the existing technology.

[0033] For ease of explanation, the following description will take the end cap 100 of a roller assembly for a winding machine, a corresponding roller assembly, and a corresponding winding machine as examples from an embodiment of this application.

[0034] First refer to Figure 1A-1B According to embodiments of the present disclosure, the end cap 100 of the roller assembly for a winding machine may include a disc-shaped base 110. The disc-shaped base 110 may be configured to mate with the shape of the roller 200 (see...). Figure 2A and Figure 4 Thus, it can be constructed in the shape of a disk.

[0035] The disc-shaped base 110 may have a protrusion 120 projecting from one end face of the disc-shaped base 110. The protrusion 120 can engage with the recess 210 of the grinding wheel 200 of the grinding wheel assembly (see...). Figure 4 ).

[0036] The disc-shaped base 110 may also have a plurality of elongated holes 130 arranged in the outer peripheral region of the disc-shaped base 110 and distributed along the circumferential direction of the disc-shaped base 110. The plurality of elongated holes 130 can be aligned with the plurality of first fastening holes 220 of the rubbing wheel 200 respectively (see...). Figure 4 ).

[0037] The disc-shaped base 110 may also have a plurality of through holes arranged in the inner circumferential region of the disc-shaped base 110 and distributed along the circumferential direction of the disc-shaped base 110. At least one of the plurality of through holes is configured as a first positioning hole 150, and the other through holes are configured as circular holes 140. The circular holes 140 can be aligned with the corresponding second fastening holes 310 of the drive shaft 300, while the first positioning holes 150 can be aligned with the corresponding second positioning holes 320 of the drive shaft 300 (see...). Figure 4 ).

[0038] Therefore, the roller end cap 100 can be positioned relative to the drive shaft 300 via the first positioning hole 150 and the corresponding positioning pin, and thus the roller end cap 100 can be positioned relative to the corresponding drum. Then, the relative position of the roller 200 and the roller end cap 100 can be adjusted using the elongated hole 130, thereby adjusting the phase of the roller 200. Therefore, it is not necessary to disassemble the relevant components of the drum and then use a measuring rod for calibration as in the prior art, while ensuring that the fitting accuracy remains unchanged when installing the roller assembly.

[0039] According to some embodiments of this disclosure, particularly referring to Figure 1A-1B and Figure 4 The first positioning hole 150 can be constructed as a circular hole, but with a different size than the circular hole 140. In the illustrated embodiment, the diameter of the positioning hole 150 is larger than the diameter of the circular hole 140. Of course, the first positioning hole 150 can also be constructed to be smaller than the circular hole 140. This allows for a simple distinction between the first positioning hole 150 and the circular hole 140, thereby facilitating manufacturing and saving costs.

[0040] According to some embodiments of this disclosure, particularly referring to Figure 1A-1B The outer periphery of the free end face of the protrusion 120 may have a first chamfer 121. In addition, the protrusion 120 may protrude centrally from one end face of the disc-shaped base 110. This facilitates the installation and alignment of the roller end cap 100.

[0041] According to some embodiments of this disclosure, particularly referring to Figure 1A-1B and Figure 2A-2BMultiple elongated holes 130 can be evenly distributed at equal intervals along the circumferential direction of the disc-shaped base 110. Additionally, multiple through holes can be evenly distributed at equal intervals along the circumferential direction of the disc-shaped base 110. This facilitates the installation and alignment of the roller end cap 100.

[0042] According to some embodiments of this disclosure, particularly referring to Figure 2A-2B and Figure 4 A first screw 10 is provided. The rubbing wheel 200 and the rubbing wheel end cap 100 can be fastened together through the first screw 10, the multiple elongated holes 130 of the rubbing wheel end cap 100, and the multiple first fastening holes 220 of the rubbing wheel 200. This allows for simple assembly of the rubbing wheel 200 and the rubbing wheel end cap 100.

[0043] According to some embodiments of this disclosure, particularly referring to Figure 2A-2B and Figure 4 A second screw 20 is provided. The roller end cover 100 and the drive shaft 300 can be fastened together through the second screw 20, the round hole 140 of the roller end cover 100 and the corresponding second fastening hole 310 of the drive shaft 300. This allows for simple assembly of the roller end cover 100 and the drive shaft 300.

[0044] Furthermore, it is conceivable that the first screw 10 and the second screw 20 may be constructed to be the same or different.

[0045] According to some embodiments of this disclosure, particularly referring to Figure 2A-2B and Figure 4 A positioning pin 30 is provided. Through the positioning pin 30, the first positioning hole 150 of the roller end cover 100 and the corresponding second positioning hole 320 of the drive shaft 300, the roller end cover 100 and the drive shaft 300 can be fixedly positioned relative to each other. This makes it easy to keep the relative position of the roller end cover 100 and the drive shaft 300 unchanged.

[0046] According to some embodiments of this disclosure, particularly referring to Figures 3A-3B The positioning pin 30 may include a first portion 31 that can be fastened to a corresponding second positioning hole 320 of the drive shaft 300 and a second portion 32 that can mate with a first positioning hole 150 of the roller end cap 100. The positioning pin 30 can thus be easily implemented.

[0047] In this regard, in the illustrated embodiment, the first portion 31 can be constructed as a cylinder with external threads to fasten or lock into the corresponding second positioning hole 320 of the drive shaft 300, and to facilitate the replacement of the positioning pin 30. The second portion 32 can be constructed as a cylinder with a smooth outer circumferential surface and to mate with the first positioning hole 150 of the roller end cap 100. The dimensions, particularly the diameter, of the second portion 32 can correspond to the dimensions, particularly the diameter, of the first positioning hole 150 of the roller end cap 100, so that the positioning pin 30 can fit tightly into the first positioning hole 150 of the roller end cap 100. This enables precise positioning.

[0048] According to some embodiments of this disclosure, particularly referring to Figures 3A-3B The outer periphery of the free end face of the second part 32 of the locating pin 30 may have a second chamfer 33. This facilitates the installation and alignment of the locating pin 30.

[0049] According to some embodiments of this disclosure, particularly referring to Figures 3A-3B The second part 32 of the locating pin 30 may have a mounting groove 34 that can mate with an installation tool (e.g., a hex wrench). This allows for easy installation of the locating pin 30.

[0050] According to some embodiments of the present disclosure, the present disclosure also provides a roller assembly for a winding machine, the roller assembly including a roller 200 and a roller end cap 100 as described above.

[0051] Especially referencing Figure 4 The rubbing wheel 200 may include a recess 210 and a plurality of first fastening holes 220. The protrusion 120 of the rubbing wheel end cap 100 can fit into the recess 210, and the plurality of elongated holes 130 of the rubbing wheel end cap 100 can be aligned with the plurality of first fastening holes 220 respectively.

[0052] According to some embodiments of this disclosure, this disclosure also provides a winding machine, which includes the roller end cap 100 as described above or the roller assembly as described above and a drive shaft 300.

[0053] Especially referencing Figure 4 The drive shaft 300 may include a corresponding second fastening hole 310 that can be aligned with the round hole 140 of the roller end cover 100 and a corresponding second positioning hole 320 that can be aligned with the first positioning hole 150 of the roller end cover 100.

[0054] According to some embodiments of this disclosure, particularly referring to Figure 4 The corresponding second fastening hole 310 and the corresponding second positioning hole 320 of the drive shaft 300 can be located on the flange 330 of the drive shaft 300. This allows for easy assembly of the roller end cover 100 and the drive shaft 300.

[0055] In summary, in the roller end cap, roller assembly, and winding machine according to this disclosure, the roller end cap and roller are locked together via elongated holes and corresponding screws to form a roller assembly. The elongated holes also allow for adjustment of the roller phase during roller replacement or when necessary. The roller end cap and drive shaft are locked together via round holes and corresponding screws, allowing the rotation of the drive shaft to drive the rotation of the end cap, which in turn drives the rotation of the roller. Furthermore, the roller end cap can be fixedly positioned relative to the drive shaft via positioning holes and corresponding positioning pins. This ensures that when disassembling and assembling the roller assembly, it is not necessary to disassemble the upper drum components and then use a measuring rod for calibration, while maintaining the original fit accuracy. This significantly improves the efficiency of disassembling and assembling the roller assembly, reduces maintenance difficulty, and ensures the fit accuracy between the roller and other components.

[0056] Although this disclosure has been presented above with reference to preferred embodiments, it is not intended to limit this disclosure. Any person skilled in the art can make possible changes and modifications to the technical solutions of this disclosure by utilizing the methods and techniques disclosed above without departing from the spirit and scope of this disclosure. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this disclosure without departing from the content of the technical solutions of this disclosure shall fall within the protection scope of the technical solutions of this disclosure.

[0057] The features disclosed herein can be implemented not only individually but also in any combination. Furthermore, it should be noted that the various figures in this disclosure are schematic and may not be shown to scale. In various embodiments, the number of components, their construction, and / or arrangement are not limited to the examples shown. The values ​​listed in the specification are for reference only and may be greater or less than said reference values ​​when dimensions are appropriately selected.

Claims

1. A cap for a capstan assembly of a cigarette making machine, the cap (100) comprising a disc-shaped base (110) having a protrusion (120) protruding from one end face of the disc-shaped base (110), the protrusion (120) being engageable into a recess (210) of a capstan (200) of the capstan assembly; characterized in that the disc-shaped base (110) further having a plurality of elongated holes (130) arranged in an outer peripheral region of the disc-shaped base (110) and distributed along a circumferential direction of the disc-shaped base (110), the plurality of elongated holes (130) being respectively alignable with a plurality of first fastening holes (220) of the capstan (200); the disc-shaped base (110) further having a plurality of through holes arranged in an inner peripheral region of the disc-shaped base (110) and distributed along the circumferential direction of the disc-shaped base (110), at least one of the plurality of through holes being configured as a first positioning hole (150), the other through holes of the plurality of through holes being configured as circular holes (140) alignable with respective second fastening holes (310) of a transmission shaft (300), and the first positioning hole (150) being alignable with a respective second positioning hole (320) of the transmission shaft (300).

2. The roller end cap of claim 1, wherein the first positioning hole (150) is configured as a circular hole but has a different size than the circular holes (140).

3. The roller end cap of claim 1, wherein a peripheral edge of a free end face of the protrusion (120) has a first chamfer (121); and / or the protrusion (120) centrally protrudes from the one end face of the disc-shaped base (110).

4. The roller end cap of claim 1, wherein the plurality of elongated holes (130) are uniformly and equidistantly distributed along the circumferential direction of the disc-shaped base (110); and / or the plurality of through holes are uniformly and equidistantly distributed along the circumferential direction of the disc-shaped base (110).

5. The roller end cap of claim 1, wherein a first screw (10) is provided, by which the capstan (200) and the cap (100) are fastenable together via the plurality of elongated holes (130) of the cap (100) and the plurality of first fastening holes (220) of the capstan (200).

6. The roller end cap of claim 1, wherein a second screw (20) is provided, by which the cap (100) and the transmission shaft (300) are fastenable together via the circular holes (140) of the cap (100) and the respective second fastening holes (310) of the transmission shaft (300).

7. The roller end cap of claim 1, wherein a positioning pin (30) is provided, by which the cap (100) and the transmission shaft (300) are fixably positionable relative to each other via the first positioning hole (150) of the cap (100) and the respective second positioning hole (320) of the transmission shaft (300).

8. The roller end cap of claim 7, wherein, the positioning pin (30) comprises a first portion (31) fastenable with the respective second positioning hole (320) of the transmission shaft (300) and a second portion (32) engageable with the first positioning hole (150) of the cap (100).

9. The roller end cap of claim 8, wherein, The first portion (31) of the positioning pin (30) is configured as a cylinder with external thread, and / or the second portion (32) of the positioning pin (30) is configured as a cylinder with smooth outer peripheral surface, and the second portion (32) is sized to correspond to the first positioning hole (150) of the roller end cover (100).

10. The roller end cap of claim 8, wherein The outer periphery of the free end surface of the second portion (32) of the positioning pin (30) has a second chamfer (33).

11. The roller end cap of claim 8, wherein The second portion (32) of the positioning pin (30) has a mounting groove (34) that can cooperate with a mounting tool.

12. A roller assembly for a cigarette making machine, comprising: The roller assembly comprises a roller (200) and a roller end cover (100) according to any one of claims 1 to 11; The roller (200) comprises a recess (210) and a plurality of first fastening holes (220), the protrusion (120) of the roller end cover (100) being capable of fitting into the recess (210), and the plurality of elongated holes (130) of the roller end cover (100) being capable of being respectively aligned with the plurality of first fastening holes (220).

13. A cigarette making machine, comprising: The rolling machine comprises a roller end cover (100) according to any one of claims 1 to 11 or a roller assembly according to claim 12 and a transmission shaft (300); The transmission shaft (300) comprises a corresponding second fastening hole (310) capable of being aligned with the round hole (140) of the roller end cover (100) and a corresponding second positioning hole (320) capable of being aligned with the first positioning hole (150) of the roller end cover (100).

14. The roll wrapping machine of claim 13, wherein, The corresponding second fastening hole (310) and the corresponding second positioning hole (320) of the transmission shaft (300) are located on a flange (330) of the transmission shaft (300). The outer periphery of the free end surface of the second portion (32) of the positioning pin (30) has a second chamfer (33). The second portion (32) of the positioning pin (30) has a mounting groove (34) that can cooperate with a mounting tool. The roller assembly comprises a roller (200) and a roller end cover (100) according to any one of claims 1 to 11; The roller (200) comprises a recess (210) and a plurality of first fastening holes (220), the protrusion (120) of the roller end cover (100) being capable of fitting into the recess (210), and the plurality of elongated holes (130) of the roller end cover (100) being capable of being respectively aligned with the plurality of first fastening holes (220). The rolling machine comprises a roller end cover (100) according to any one of claims 1 to 11 or a roller assembly according to claim 12 and a transmission shaft (300); The transmission shaft (300) comprises a corresponding second fastening hole (310) capable of being aligned with the round hole (140) of the roller end cover (100) and a corresponding second positioning hole (320) capable of being aligned with the first positioning hole (150) of the roller end cover (100). The corresponding second fastening hole (310) and the corresponding second positioning hole (320) of the transmission shaft (300) are located on a flange (330) of the transmission shaft (300).

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