Cigarette lifter inlet turn section inner ring wear reduction mechanism

Abstract

The application discloses a cigarette lifter inlet turning section inner ring wear reduction mechanism, and relates to the technical field of tobacco machinery. The cigarette lifter inlet turning section inner ring wear reduction mechanism comprises a support base fixed to the inner ring, a continuous arc-shaped guide surface of the support base, and a plurality of wear reduction units arranged at intervals along the guide surface. Each wear reduction unit is composed of a support shaft and a wear reduction sleeve coaxially connected to the support shaft. The outer side wall of the wear reduction sleeve partially protrudes from the guide surface to form a rolling contact part. By converting the global sliding friction between the conveying belt and the inner ring cover into discrete rolling contact, the frictional resistance is significantly reduced, the cigarette arrangement disorder and wrinkle defects caused by belt slip are completely eliminated, and the service life of the belt and the inner ring coating is greatly prolonged.

Description

Technical Field

[0001] This application relates to the field of tobacco machinery technology, specifically to a friction-reducing mechanism for the inner ring of the inlet turning section of a cigarette lifting machine. Background Technology

[0002] The cigarette elevator is a key piece of equipment on the cigarette rolling production line, used to transport rolled cigarettes from the lower exit of the cigarette rolling machine to a higher storage device (such as an elevated warehouse). This equipment typically includes a horizontal sampling section, an inlet turning section, a vertical lifting section, and an outlet turning section, with the inlet turning section responsible for changing the direction of the cigarette flow. In actual production, especially when conveying medium-sized cigarettes (approximately 6.37mm) and slim cigarettes (approximately 5.4mm) with smaller diameters, quality problems such as disordered arrangement and cigarette wrinkling can easily occur when the cigarettes pass through the inlet turning section, affecting product quality and production efficiency.

[0003] To address these issues, existing technologies have proposed various solutions, such as using a swing-arm flexible conveyor to replace the fixed conveyor channel at the entrance bend. However, these improvements primarily target the outer track, while the inner track typically remains a fixed structure. This results in sliding friction between the conveyor belt and the inner conveyor housing at the entrance bend. This sliding friction not only leads to higher frictional resistance and exacerbates wear on the belt and inner coating (such as the bend plate), but also makes the conveyor belt more prone to slippage. This is one of the core causes of quality problems such as disordered cigarette arrangement and wrinkles.

[0004] Therefore, this application proposes a friction-reducing mechanism for the inner ring of the inlet turning section of a cigarette elevator, which can transform the sliding friction between the inner ring of the inlet turning section and the conveyor belt into rolling friction, effectively reducing friction and the risk of belt slippage, thereby solving quality problems such as disordered arrangement and wrinkles that occur when cigarettes pass through this section. Utility Model Content

[0005] The main objective of this application is to provide a friction-reducing mechanism for the inner ring of the inlet turning section of a cigarette elevator, which aims to solve the technical problem of belt slippage caused by sliding friction between the inner ring and the conveyor belt in the inlet turning section of the cigarette elevator, resulting in quality defects such as disordered cigarette arrangement and wrinkles.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A friction-reducing mechanism for the inner ring of the inlet turning section of a cigarette elevator includes:

[0008] The support base is fixed in the inner ring of the turning section at the entrance of the hoist and is provided with a continuous arc-shaped guide surface facing the object being guided.

[0009] A plurality of anti-friction units are arranged at intervals along the extension direction of the guiding surface. Each anti-friction unit includes: a support shaft installed in the installation groove of the support base, and an anti-friction sleeve coaxially sleeved outside the support shaft; the axis of the support shaft is parallel to the axial direction of the guiding surface, and a part of the outer side wall of the anti-friction sleeve protrudes from the guiding surface to form a rolling contact part.

[0010] As a further improvement of the present application, a plurality of installation grooves are arranged at intervals along the extension direction of the guiding surface. The inner contour of each installation groove is adapted to the outer contour of the anti-friction sleeve. Installation holes penetrating through the outside of the support base are provided at both ends of each installation groove in the length direction. Both ends of the support shaft respectively penetrate through the two installation holes and are fixed by limit pieces.

[0011] As a further improvement of the present application, the outer convex height H of the anti-friction sleeve satisfies: 0 < H ≤ 0.25R, where R is the radius of the anti-friction sleeve.

[0012] As a further improvement of the present application, a first positioning recess and a second positioning recess are respectively provided at both ends of the support base along the conveying direction of the guiding surface to respectively adapt to the roller profiles upstream and downstream of the entrance turning section.

[0013] The technical solution provided by the present application may include the following beneficial effects:

[0014] During the use of the present application, through the cooperation of the continuous arc-shaped guiding surface provided on the support base and the anti-friction sleeves arranged at intervals, the contact mode between the conveying belt and the inner circle of the entrance turning section undergoes an essential change: sliding friction is replaced by local rolling friction. This fundamental change not only significantly reduces the frictional resistance, but also completely eliminates the phenomenon of the conveying belt slipping caused by sliding friction in the background technology. The fundamental improvement of the belt running stability directly eradicates the physical roots of quality defects such as chaotic arrangement and wrinkles of cigarette sticks when passing through the turning section. At the same time, the change in the friction form greatly reduces the abnormal wear of the belt and the inner circle coating. While improving the quality of cigarette stick conveying, the synergistic optimization of the service life of key components is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of an anti-friction mechanism for the inner circle of the entrance turning section of a cigarette stick lifter;

[0017] Figure 2This is an exploded schematic diagram of an inner ring friction-reducing mechanism in the inlet turning section of a cigarette lifting machine;

[0018] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0019] Figure label:

[0020] 1. Support base; 11. Guide surface; 12. Mounting groove; 13. Mounting hole; 14. First positioning recess; 15. Second positioning recess; 2. Anti-friction unit; 21. Support shaft; 22. Anti-friction sleeve; 23. Limiting component. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] Figure 1 This application illustrates an embodiment of a friction-reducing mechanism for the inner ring of the inlet turning section of a cigarette elevator. See [link to relevant documentation]. Figure 1 In this embodiment, the inner ring friction reduction mechanism of the cigarette lifting machine inlet turning section includes: a support base 1 and a friction reduction unit 2.

[0023] Among them, see Figure 2 and Figure 3, the support base 1 is fixedly arranged inside the inner circle of the turning section at the inlet of the elevator, and is provided with a continuous arc-shaped guiding surface 11 facing the guided object. Along the extending direction of the guiding surface 11, a plurality of anti-friction units 2 are arranged at intervals. Each anti-friction unit 2 includes: a support shaft 21 installed in the installation groove 12 of the support base 1, and an anti-friction sleeve 22 coaxially sleeved outside the support shaft 21; the axis of the support shaft 21 is parallel to the axial direction of the guiding surface 11, and a part of the outer side wall of the anti-friction sleeve 22 protrudes from the guiding surface 11 to form a rolling contact part. Through the cooperation of the continuous arc-shaped guiding surface 11 arranged on the support base 1 and the anti-friction sleeves 22 arranged at intervals, the contact mode between the conveyor belt and the inner circle of the inlet turning section undergoes an essential change: sliding friction is replaced by local rolling friction. This fundamental change not only significantly reduces the frictional resistance, but also completely eliminates the phenomenon of the conveyor belt slipping caused by sliding friction in the background art. The fundamental improvement of the belt running stability directly eradicates the physical root causes of quality defects such as chaotic arrangement and wrinkles when the cigarette rods pass through the turning section. At the same time, the change in the friction form greatly reduces the abnormal wear of the belt and the inner circle coating, and while improving the quality of cigarette rod conveying, realizes the coordinated optimization of the service life of key components.

[0024] Optionally, the outer convex height H of the anti-friction sleeve 22 satisfies: 0 < H ≤ 0.25R, where R is the radius of the anti-friction sleeve 22. By defining the critical threshold of the outer convex height of the anti-friction sleeve 22, on the premise of ensuring the effective establishment of rolling contact, it not only avoids the cigarette rod bumps caused by the sleeve being overly embedded in the conveyor belt, but also prevents the failure of friction conversion due to insufficient protrusion, so that the cigarette rod flow always maintains a stable linear posture when passing through the turning section, and completely eliminates the wrinkle defect.

[0025] Optionally, the anti-friction sleeve 22 is made of nylon material, and its self-lubricating property is used to reduce the rotational resistance between it and the support shaft 21, and at the same time, the high-frequency micro-vibrations of the conveyor belt are absorbed through the elastic deformation of the material.

[0026] Furthermore, referring to Figure 2 and Figure 3 , a plurality of installation grooves 12 are arranged at intervals along the extending direction of the guiding surface 11. The inner contour of each installation groove 12 is adapted to the outer contour of the anti-friction sleeve 22. Installation holes 13 penetrating through the outside of the support base 1 are arranged at both ends of each installation groove 12 in the length direction. Both ends of the support shaft 21 respectively penetrate through the two installation holes 13 and are fixed by limit members 23. Through the precise adaptation design of the installation groove 12 and the outer contour of the anti-friction sleeve 22, combined with the axial limit fixation at both ends of the support shaft 21, it is ensured that each anti-friction unit 2 maintains a stable radial position and axial rigidity during high-speed operation, so that the rolling contact part is always in a preset working state, and eliminates the local sliding friction hysteresis caused by component deflection.

[0027] Optionally, the limiting member 23 is a shaft elastic retaining ring, and the two ends of the support shaft 21 are machined with annular grooves that are adapted to the retaining ring. The support shaft 21 is locked in the axial direction with zero clearance by the elastic contraction force of the retaining ring, while retaining a small amount of thermal expansion compensation space under high temperature conditions.

[0028] Further, see Figure 2 and Figure 3 The support base 1 has a first positioning recess 14 and a second positioning recess 15 at both ends along the conveying direction of the guide surface 11, respectively, to adapt to the contours of the upstream and downstream rollers of the inlet turning section. By adapting the first and second positioning recesses 15 to the contours of the upstream and downstream rollers, the continuous arc-shaped guide surface 11 of the support base 1 forms a seamless composite support system with the original rollers of the equipment, completely eliminating the local suspension phenomenon of the conveyor belt in the starting / ending area of ​​the turning section, and working with the friction reduction unit 2 to achieve stable support of the belt throughout the entire path, thus eliminating the physical cause of disordered cigarette arrangement from a spatial structural perspective.

[0029] For example, the working principle of the inner ring friction reduction mechanism in the inlet turning section of the cigarette elevator is illustrated as follows:

[0030] When the conveyor belt carrying the cigarette combo enters the inlet turning section, the support base 1 fixed to the inner ring provides the main trajectory constraint for the belt with its continuous arc-shaped guide surface 11. Among the friction-reducing units 2 arranged at intervals along the extension direction of the guide surface 11, the outer circumferential surface of the locally protruding friction-reducing sleeve 22 first contacts the inner side of the belt, transforming the full-area sliding friction between the belt and the inner ring cover in the traditional structure into discrete rolling contact. The support shaft 21 remains stationary under the rigid constraint of the limiting member 23, forcing the friction-reducing sleeve 22 to rotate around the shaft under the drive of belt friction, realizing the essential transformation from sliding friction to rolling friction. The positioning recesses located at both ends of the support base 1 precisely fit the upstream and downstream rollers, so that the arc-shaped guide surface 11 and the rotating roller form a composite support system with continuous curvature, completely eliminating the suspended section of the belt in the starting / ending area of ​​the turn. The resulting dual mechanism of "rolling friction reduction + full-area support" not only eliminates the disordered arrangement of cigarettes caused by belt slippage, but also eliminates the conditions for the formation of wrinkles on the cigarette surface through stable frictional contact.

[0031] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A friction-reducing mechanism for the inner ring of the inlet turning section of a cigarette lifting machine, characterized in that, Comprising: A support base, fixedly arranged on the inner ring of the turning section at the inlet of the elevator, and provided with a continuous arc-shaped guiding surface facing the guided object; A plurality of anti-friction units, arranged at intervals along the extension direction of the guiding surface. Each anti-friction unit includes: a support shaft mounted in the mounting groove of the support base, and an anti-friction sleeve coaxially sleeved outside the support shaft; the axis of the support shaft is parallel to the axial direction of the guiding surface, and a part of the outer side wall of the anti-friction sleeve protrudes from the guiding surface to form a rolling contact part.

2. The friction-reducing mechanism for the inner ring of the inlet turning section of the cigarette lifting machine according to claim 1, characterized in that, A plurality of mounting grooves are arranged at intervals along the extension direction of the guiding surface. The inner contour of each mounting groove is adapted to the outer contour of the anti-friction sleeve. At both ends of each mounting groove in the length direction, mounting holes penetrating through the outside of the support base are provided. Both ends of the support shaft respectively penetrate through the two mounting holes and are fixed by limiting parts.

3. The friction-reducing mechanism for the inner ring of the inlet turning section of the cigarette lifting machine according to claim 1, characterized in that, The outer convex height H of the anti-friction sleeve satisfies: 0 < H ≤ 0.25R, where R is the radius of the anti-friction sleeve.

4. The friction-reducing mechanism for the inner ring of the inlet turning section of the cigarette lifting machine according to claim 1, characterized in that, The two ends of the support base along the conveying direction of the guiding surface are respectively provided with a first positioning concave part and a second positioning concave part to respectively adapt to the roller profiles of the upstream and downstream of the inlet turning section.

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