protective member

Abstract

The application relates to a protection piece for a transmission shaft assembly connected through a shaft coupling in a cigarette machine leveler, which is arranged at an oil seal part of the transmission shaft assembly; the protection piece comprises a first section and a second section connected in a first direction, the first section is sleeved on the outside of the transmission shaft assembly, the second section is formed with a convex ring by protruding around the edge of the first section, the end face of the convex ring away from the first section is perpendicular to the first direction, and is in sealing contact with the transmission shaft assembly to cover the oil seal part, wherein the first section is further provided with an oil guide channel which penetrates through the first section and is used for connecting an external pipeline. The protection piece is arranged outside the oil seal framework to isolate the oil seal framework from the outside world, so that the direct falling of cut tobacco into the inside of the transmission shaft assembly is blocked, the sealing effect is improved, and the probability of oil leakage is reduced. When the oil amount in the transmission shaft assembly is too much or oil stains are generated, the oil can be discharged from the transmission shaft assembly through the oil guide channel.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cigarette manufacturing, in particular to a protection piece. BACKGROUND

[0002] A cigarette machine is a device for rolling tobacco into cigarettes. The flattener is mainly used to adjust the shape and density of the tobacco in the cigarette to ensure the quality and stability of the cigarette. The flattener is generally connected with the rear transmission shaft assembly through a coupling. Because the coupling and the transmission shaft assembly are not on the same horizontal line, the transmission shaft assembly will shake, which will cause the oil seal part of the transmission shaft assembly to fail easily, resulting in oil leakage. CONTENT OF THE UTILITY MODEL

[0003] The present application aims at the problem that the existing transmission shaft assembly connected with the flattener is prone to sealing failure. A protection piece is provided, which is arranged at the oil seal part of the transmission shaft assembly and has the technical effect of isolating the oil seal part from the outside and improving the sealing performance.

[0004] A protection piece for a transmission shaft assembly connected by a coupling in a tobacco flattener, the protection piece being arranged at an oil seal part of the transmission shaft assembly;

[0005] The protection piece comprises a first section and a second section connected in a first direction. The first section is sleeved on the outside of the transmission shaft assembly. The second section is formed with a convex ring protruding around the edge of the first section. The end face of the convex ring away from the first section is perpendicular to the first direction and in sealing contact with the transmission shaft assembly to cover the oil seal part. The first section is further provided with an oil guide channel penetrating through the first section and used for connecting an external pipeline.

[0006] In one embodiment, the first section is provided with a first sealing piece located on the inner wall surface of the first section and in abutting contact with the transmission shaft assembly.

[0007] In one embodiment, the first sealing piece is detachably mounted on the inner wall surface of the first section.

[0008] In one embodiment, the first sealing piece is configured as a flexible piece.

[0009] In one embodiment, the end face of the convex ring away from the first section is provided with a second sealing piece in abutting contact with the transmission shaft assembly.

[0010] In one embodiment, the second sealing piece is configured as an elastic piece.

[0011] In one embodiment, the first section is provided with a pressure relief part in communication with the first section and the outside.

[0012] In one of the embodiments, the pressure relief part is detachably connected with a muffler or a pressure relief valve joint.

[0013] In one of the embodiments, the oil guide channel is located at the bottom of the second segment and detachably connected with the outer pipeline.

[0014] In one of the embodiments, the protection member is configured as a corrosion-resistant member.

[0015] The above technical solution, by setting the protection member outside the oil seal framework, the oil seal framework and the outside are isolated, and the tobacco is directly blocked into the transmission shaft assembly. Because the first segment and the transmission shaft assembly are in radial sealing contact with the transmission shaft assembly, and the end surface of the second segment is in sealing contact with the oil seal flange in the first direction, the protection member and the transmission shaft assembly are in multi-directional sealing contact, the sealing effect of the protection member is improved, and the probability of oil leakage is reduced. In addition, when the transmission shaft assembly leaks oil, the leaked oil can be discharged from the transmission shaft assembly through the oil guide channel, reducing the probability of direct leakage of oil in the transmission shaft assembly and pollution of tobacco. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The protection member provided by some embodiments of the present application is shown in the perspective view.

[0017] Figure 2 The protection member provided by some embodiments of the present application is shown in the cross-sectional view of the transmission shaft assembly.

[0018] Marked with reference signs:

[0019] 10, first segment; 11, oil guide channel; 12, first sealing member; 13, pressure relief part; 20, second segment; 21, second sealing member; X, first direction; 100, protection member; 200, transmission shaft assembly; 210, housing; 220, transmission shaft; 230, oil seal framework; 240, oil seal flange. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0022] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0023] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, 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 internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0025] It should be noted that when 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. When 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. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Figure 1 A perspective view of a protective element provided in some embodiments of this application. Figure 2 A cross-sectional view of a protective component provided in some embodiments of this application assembled into a drive shaft assembly. Please refer to... Figure 1 and Figure 2 Some embodiments of this application provide a protective member 100 for use in a tobacco leveler connected to a drive shaft assembly 200 via a coupling. The protective member 100 is disposed on the oil seal portion of the drive shaft assembly 200. The protective member 100 includes a first segment 10 and a second segment 20 connected along a first direction X. The first segment 10 is sleeved on the outside of the drive shaft assembly 200. The second segment 20 protrudes around the edge of the first segment 10 to form a convex ring. The convex ring is perpendicular to the first direction X from the end face of the first segment 10 and is in sealing contact with the drive shaft assembly 200 to cover the oil seal portion. The first segment 10 is also provided with an oil guide channel 11, which passes through the first segment 10 and is used for connecting an external pipe.

[0027] The structure of the first segment 10 can be constructed as a sleeve, and the first segment 10 and the second segment 20 are connected along the first direction X, that is, the axial direction of the drive shaft 220. The first segment 10 and the second segment 20 can be manufactured using an integral molding process to simplify the processing of the first segment 10 and the second segment 20 and improve the connection strength between them.

[0028] For example, the drive shaft assembly 200 includes components such as a housing 210, a drive shaft 220, an oil seal skeleton 230, and an oil seal flange 240. The coupling can be inserted into the housing 210 and connected to the drive shaft 220. The oil seal skeleton 230 is sleeved on the outside of the drive shaft 220 and exposed outside the housing 210. The oil seal flange 240 is sleeved on the outside of the oil seal skeleton 230.

[0029] When assembling the protective component 100, the first segment 10 of the protective component 100 is fitted onto the outside of the housing 210 and makes sealing contact with the housing 210. The second segment 20 is fitted onto the outside of the oil seal skeleton 230, so that the end face of the second segment 20 makes sealing contact with the oil seal flange 240 in the first direction X. The second segment 20 and the oil seal flange 240 can be connected by fasteners such as threads to facilitate disassembly and assembly.

[0030] During the operation of the leveler, the connection between the oil seal skeleton 230 and the drive shaft 220 is usually exposed to the outside environment, making it easy for impurities such as tobacco and dust to enter, causing the oil seal skeleton 230 to fail. This also allows the lubricating oil in the drive shaft assembly 200 to easily flow through the oil seal skeleton 230 to other components, and may even contaminate the tobacco, affecting the quality of the cigarette product. In levelers without this protective component 100, the oil leakage location is relatively hidden, and the leveler is large and complex in structure. When an oil leakage problem is discovered, it is generally necessary to disassemble some components of the leveler to find the oil leakage location, which requires a lot of time for searching and repair, and both the discovery and repair are quite difficult.

[0031] Based on this, the protective component 100 is placed outside the oil seal skeleton 230 to isolate the oil seal skeleton 230 from the outside environment and prevent tobacco from falling directly into the drive shaft assembly 200. Because the first section 10 and the drive shaft assembly 200 are in radial sealing contact, while the end face of the second section 20 is in sealing contact with the oil seal flange 240 in the first direction X, the protective component 100 and the drive shaft assembly 200 can be in multi-directional sealing contact, improving the sealing effect of the protective component 100 and reducing the probability of oil leakage.

[0032] In addition, when there is too much oil in the drive shaft assembly 200 or when oil stains are generated, the oil can be discharged from the drive shaft assembly 200 through the oil guide channel 11, which reduces the probability of oil leaking directly from the drive shaft assembly 200 and contaminating the tobacco.

[0033] In some embodiments, the first segment 10 is provided with a first seal 12, which is located on the inner wall surface of the first segment 10 and abuts against the drive shaft assembly 200.

[0034] This configuration further improves the sealing effect between the first section 10 and the drive shaft assembly 200 in the radial direction of the drive shaft assembly 200, reduces the probability of tobacco and dust entering the drive shaft assembly 200 from the radial direction, and improves the dustproof effect of the protective component 100.

[0035] Specifically, in some embodiments, the first seal 12 is detachably mounted on the inner wall surface of the first segment 10.

[0036] For example, the first seal 12 can be installed on the inner wall surface of the first segment 10 by means of bonding, snap-fitting, etc. When the first seal 12 is severely worn, it can be replaced with a new part, reducing maintenance costs.

[0037] It should be noted that the first sealing element 12 may protrude from the inner wall surface of the first segment 10, or the first sealing element 12 may be installed in an embedded manner on the inner wall surface of the first segment 10. That is, the end face of the first sealing element 12 is flush with the inner wall surface of the first segment 10.

[0038] More specifically, the first seal 12 is configured as a flexible element.

[0039] For example, the first seal 12 can be made of, but is not limited to, felt, fleece, sponge, and novel polymer sealing materials. For example, the first seal 12 can be made of a polytetrafluoroethylene fiber composite sealing material with self-lubricating and wear-resistant properties.

[0040] This design improves the sealing effect between the first section 10 and the drive shaft assembly 200. Furthermore, even under frequent rotational friction from the drive shaft 220 during long-term use, it maintains good sealing performance, reducing the risk of seal failure due to wear. In addition, it enhances the shock absorption effect of the protective component 100 and reduces the manufacturing difficulty of the first seal 12.

[0041] Furthermore, in some embodiments, a second seal 21 is provided on the end face of the convex ring opposite to the first segment 10, and the second seal 21 abuts against the drive shaft assembly 200.

[0042] During actual installation, the second seal 21 contacts the oil seal flange 240 of the drive shaft assembly 200 along the first direction X, which can reduce the probability of lubricating oil in the drive shaft assembly 200 overflowing through the end face of the convex ring and improve the sealing effect of the protective component 100.

[0043] Furthermore, in some embodiments, the second seal 21 is configured as an elastic element.

[0044] For example, the second seal 21 can be made of materials such as rubber, silicone, and fluororubber. Taking fluororubber as an example, it has excellent high-temperature resistance and chemical corrosion resistance. When the protective component 100 is exposed to various chemical substances and certain temperature changes during use, the second seal 21 can maintain its original performance under various operating conditions, extending the service life of the protective component 100 and reducing the probability of leakage in the drive shaft assembly 200 in the first direction X due to seal failure.

[0045] like Figure 2 As shown, in some embodiments, the first segment 10 is provided with a pressure relief section 13, which connects the first segment 10 to the outside.

[0046] For example, the pressure relief section 13 can be configured as a through hole opened on the first section 10.

[0047] During the operation of the leveler, the drive shaft assembly 200 can generate a large amount of heat and cause its internal pressure to rise. At this time, the pressure can be released through the pressure relief part 13 to release the internal pressure of the drive shaft assembly 200, reduce the probability of damage to the protective component 100 or nearby components due to excessive internal pressure of the drive shaft assembly 200, and extend the service life of the protective component 100.

[0048] The number of pressure relief sections 13 can be multiple, and the location of the pressure relief sections 13 can be, but is not limited to, the top or side of the first section 10. By simultaneously relieving pressure through multiple pressure relief sections 13, the pressure relief efficiency can be improved.

[0049] Specifically, in some embodiments, the pressure relief section 13 is detachably connected to a silencer or pressure relief valve connector.

[0050] For example, the inner wall of the pressure relief part 13 is threaded, or the pressure relief part 13 is provided with a snap-fit. The silencer and pressure relief valve connectors are threaded or snap-fitted to the pressure relief part 13. When the silencer or pressure relief valve connector is damaged, it is convenient for the user to remove it from the pressure relief part 13 and install a new silencer or pressure relief valve, reducing the difficulty of maintenance.

[0051] For example, when a muffler is installed on the pressure relief section 13 to assist in pressure relief, the exhaust path of high-pressure gas can be extended through the muffler, reducing gas pressure, gradually releasing pressure, and improving the pressure relief effect.

[0052] Please see Figure 2 In some embodiments, the oil guide channel 11 is located at the bottom of the second section 20 and is detachably connected to an external pipe.

[0053] The oil guide channel 11 can be configured as a through hole penetrating the wall of the second section 20. The through hole can be set perpendicular to the wall of the second section 20, or inclined relative to the wall of the second section 20, or spiral. The oil guide channel 11 can be connected to the external pipeline by, but is not limited to, threaded connection or snap-fit ​​connection, so as to facilitate the connection of the oil guide channel 11 to the external pipeline.

[0054] The external pipe can be connected to a collection container or an oil draining system. When the oil guide channel 11 is connected to the collection container via the external pipe, the collection container can be used directly to collect the lubricating oil or oil sludge inside the drive shaft assembly 200. When the oil guide channel 11 is connected to the oil draining system via the external pipe, the collected lubricating oil can be reused repeatedly, and the collected oil sludge can be centrally processed, improving the processing efficiency of the lubricating oil inside the drive shaft assembly 200.

[0055] In some embodiments, the protective element 100 is configured as a corrosion-resistant element.

[0056] For example, the first segment 10 and the second segment 20 can be made of corrosion-resistant and high-strength materials, which improves the sealing performance and durability of the first segment 10 and the second segment 20. Moreover, the protective component 100 can be used with various types of chemical substances, thus broadening the scope of application of the protective component 100.

[0057] 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 specification.

[0058] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the 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 patent application should be determined by the appended claims.

Claims

1. A protective component for a drive shaft assembly connected by a coupling in a cigarette machine leveler, characterized in that, The protective component is disposed on the oil seal portion of the drive shaft assembly; The protective component includes a first segment and a second segment connected along a first direction. The first segment is sleeved on the outside of the drive shaft assembly. The second segment protrudes around the edge of the first segment to form a convex ring. The convex ring is perpendicular to the first direction from the end face of the first segment and is in sealing contact with the drive shaft assembly to cover the oil seal portion. The first segment is also provided with an oil guide channel, which passes through the first segment and is used for connecting an external pipeline.

2. The protective component according to claim 1, characterized in that, The first segment is provided with a first seal, which is located on the inner wall surface of the first segment and abuts against the drive shaft assembly.

3. The protective component according to claim 2, characterized in that, The first seal is detachably installed on the inner wall of the first segment.

4. The protective component according to claim 2, characterized in that, The first seal is constructed as a flexible element.

5. The protective member according to any one of claims 1 to 4, characterized in that, The end face of the convex ring opposite to the first segment is provided with a second sealing element, which abuts against the drive shaft assembly.

6. The protective component according to claim 5, characterized in that, The second seal is constructed as an elastic element.

7. The protective member according to any one of claims 1 to 4, characterized in that, The first section is provided with a pressure relief section, which connects the first section to the outside.

8. The protective component according to claim 7, characterized in that, The pressure relief section is detachably connected to a silencer or a pressure relief valve connector.

9. The protective member according to any one of claims 1 to 4, characterized in that, The oil guide channel is located at the bottom of the first section and is detachably connected to the external pipe.

10. The protective member according to any one of claims 1 to 4, characterized in that, The protective component is constructed to be corrosion resistant.

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