Rubber roll and conveying apparatus

Abstract

The application provides a rubber roller and a conveying device. The rubber roller comprises a main shaft, a shaft sleeve and a rubber sleeve. The shaft sleeve is rotatably sleeved on the outer circumferential surface of the main shaft and coaxially arranged with the main shaft. The outer circumferential surface of the shaft sleeve is provided with anti-skid lines. The inner diameter of the rubber sleeve is slightly smaller than the outer diameter of the shaft sleeve, and the rubber sleeve is tightly sleeved on the outer surface of the shaft sleeve through interference fit, so that the inner surface of the rubber sleeve and the anti-skid lines of the shaft sleeve form a mechanical engagement structure. The anti-skid lines of the shaft sleeve can effectively increase the contact friction with the rubber sleeve and reduce the risk of slipping between the two in a heavy oil environment. The conveying device provided by the application comprises the above rubber roller, and therefore has the advantages of the above rubber roller.

Description

Technical Field

[0001] This application belongs to the field of roller technology, and more specifically, relates to a rubber roller and conveying equipment. Background Technology

[0002] In industrial sectors such as papermaking, dyeing, printing, thin film manufacturing, and the battery industry chain, rubber rollers play an irreplaceable role as key transmission components. Traditional rubber rollers typically consist of a metal roller shaft and an outer rubber sleeve. This structure can meet basic transmission requirements under normal operating conditions. However, in heavy oil working environments, the rubber rollers are in prolonged contact with industrial oil media such as lubricating oil and cutting fluid, resulting in a significant decrease in the coefficient of friction between the rubber sleeve and the metal roller shaft. As the equipment operates at continuous high speeds, relative slippage can easily occur between the rubber sleeve and the metal roller shaft. This slippage not only causes a decrease in transmission accuracy and fluctuations in product processing quality, but in more serious cases, it can lead to the rubber sleeve completely detaching from the metal roller shaft, causing equipment downtime. Utility Model Content

[0003] The purpose of this application is to provide a rubber roller and conveying equipment to solve the technical problem that the rubber roller is prone to slippage between the rubber sleeve and the metal roller shaft in the heavy oil working environment.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] A rubber roller is provided, comprising a main shaft, a bushing, and a rubber sleeve. The bushing is rotatably fitted onto the main shaft and is coaxially arranged with the main shaft. The outer surface of the bushing is provided with anti-slip texture. The rubber sleeve is fitted onto the bushing, and the inner circumferential surface of the rubber sleeve contacts the anti-slip texture. The anti-slip texture of the bushing can effectively increase the contact friction between the bushing and the rubber sleeve, reducing the risk of slippage between the two in a heavy oil environment.

[0006] As a further improvement to the above technical solution:

[0007] Optionally, the anti-slip texture is a spiral pattern extending axially along the bushing. The spiral pattern not only effectively increases the contact area between the bushing and the rubber sleeve, but also acts as a guide during the assembly process, ensuring smooth assembly. The continuous extension of the spiral pattern allows for a uniform friction distribution across the circumferential direction of the rubber sleeve, preventing localized stress concentration.

[0008] Optionally, the anti-slip texture includes a first spiral extending from one end of the bushing toward its center, and a second spiral extending from the other end of the bushing toward its center, wherein the first and second spirals have opposite directions of rotation. This double spiral structure creates a balanced frictional force distribution on both axial sides of the bushing, effectively preventing axial movement of the bushing during operation. This double spiral structure is particularly suitable for working conditions requiring bidirectional transmission, significantly improving the transmission stability of the rubber roller provided in this application under both forward and reverse rotation conditions.

[0009] Optionally, the rubber roller also includes a bearing, the inner ring of which is fitted onto the main shaft, and the outer ring of which is embedded inside the bushing. The bearing not only reduces the frictional resistance between the main shaft and the bushing but also ensures transmission accuracy and operational stability. The main shaft and the bushing are spaced apart from each other. This spacing ensures the freedom of movement of the rotating components while providing necessary space for the flow of lubricating medium.

[0010] Optionally, the number of bearings is at least two, with each bearing spaced apart from the other along the axial direction of the main shaft, and at least two bearings respectively located at both ends of the bushing. This multi-bearing arrangement improves the rotational stability of the bushing relative to the main shaft and is particularly suitable for operating conditions subject to large radial loads.

[0011] Optionally, the rubber roller also includes a limiting ring, which is mounted on the main shaft and abuts against the bearing to limit the axial position of the bearing. The axial displacement of the bearing along the main shaft is limited by a mechanical stop.

[0012] Optionally, the limiting ring is provided with multiple through holes extending in the radial direction, and the rubber roller also includes a fastener that passes through the through holes and has one end abutting against the main shaft. This mechanical fastening method further enhances the axial positioning reliability of the limiting ring, preventing axial loosening under high-speed operation or vibration conditions.

[0013] Optionally, a planar portion is provided on the spindle, perpendicular to its radial direction, and one end of the fastener abuts against the planar portion. The end of the fastener forms surface contact with the planar portion, ensuring stable contact with the end of the fastener. This planar portion structure not only provides a reliable support surface for the fastener but also effectively disperses the preload of the fastener by increasing the contact area, while also preventing damage to the spindle caused by localized stress concentration.

[0014] Optionally, the sleeve is a black nitrile rubber sleeve, which has excellent oil resistance and wear resistance.

[0015] This application provides a conveying device, including the aforementioned rubber roller.

[0016] The beneficial effects of the rubber roller and conveying equipment provided in this application are as follows:

[0017] The rubber roller provided in this application includes a main shaft, a bushing, and a rubber sleeve. The bushing is rotatably fitted onto the outer circumferential surface of the main shaft and is coaxially positioned with the main shaft. The outer circumferential surface of the bushing is machined with anti-slip texture. The inner diameter of the rubber sleeve is slightly smaller than the outer diameter of the bushing, and it is tightly fitted onto the outer surface of the bushing via an interference fit, so that the inner surface of the rubber sleeve and the anti-slip texture of the bushing form a mechanical interlocking structure. The anti-slip texture of the bushing effectively increases the contact friction between the bushing and the rubber sleeve, reducing the risk of slippage between them in heavy oil environments.

[0018] The conveying equipment provided in this application includes the aforementioned rubber roller, and therefore also has the advantages of the aforementioned rubber roller. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a cross-sectional view of the rubber roller provided in this application;

[0021] Figure 2 This is a schematic diagram of the main structure of the rubber roller provided in this application;

[0022] Figure 3 A partially enlarged structural diagram of the rubber roller provided in this application. Figure 1 ;

[0023] Figure 4 A partially enlarged structural diagram of the rubber roller provided in this application. Figure 2 .

[0024] The following are the labeling elements in the figure:

[0025] 1. Spindle; 2. Bushing;

[0026] 3. Rubber sleeve; 4. Bearing;

[0027] 5. Limiting ring; 51. Through hole. Detailed Implementation

[0028] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] like Figure 1 and Figure 2 As shown, this application provides a rubber roller, including a main shaft 1, a bushing 2, and a rubber sleeve 3. The bushing 2 is rotatably fitted onto the outer peripheral surface of the main shaft 1 and is coaxially positioned with the main shaft 1. The outer peripheral surface of the bushing 2 is machined with anti-slip texture. The inner diameter of the rubber sleeve 3 is slightly smaller than the outer diameter of the bushing 2. It is tightly fitted onto the outer surface of the bushing 2 by an interference fit, so that the inner surface of the rubber sleeve 3 and the anti-slip texture of the bushing 2 form a mechanical interlocking structure. The anti-slip texture of the bushing 2 can effectively increase the contact friction with the rubber sleeve 3, reducing the risk of slippage between the two in a heavy oil environment.

[0033] like Figure 3 As shown in a specific embodiment of this application, the outer surface of the bushing 2 is provided with anti-slip texture extending in a spiral shape along its axial direction. The spiral angle of the texture can range from 15° to 45°, and the pitch can range from 5mm to 15mm. The cross-sectional shape of the spiral texture is preferably trapezoidal, with a top width of 1mm-2mm, a bottom width of 2-3mm, and a texture depth of 0.8mm-1.5mm. This spiral texture not only effectively increases the contact area between the bushing 2 and the rubber sleeve 3, but also plays a guiding role during the assembly of the rubber sleeve 3, ensuring the smoothness of the assembly process. The continuous extension characteristic of the spiral texture allows the rubber sleeve 3 to obtain a uniform friction force distribution at all circumferential positions, avoiding local stress concentration.

[0034] like Figure 3 As shown in a specific embodiment of this application, the outer surface of the bushing 2 is provided with a double-helix anti-slip texture, which consists of a first helix and a second helix. The first helix extends from the left end of the bushing 2 to the right to the middle region, and the second helix extends from the right end of the bushing 2 to the left to the middle region. The two helical sections have opposite directions of rotation and intersect in the middle region. This symmetrically arranged double-helix structure can form a balanced frictional force distribution on both sides of the axial direction of the bushing 2, effectively preventing the rubber sleeve 3 from axially shifting during operation. This double-helix structure is particularly suitable for working environments requiring bidirectional transmission and can significantly improve the transmission stability of the rubber roller under forward and reverse rotation conditions.

[0035] like Figure 4 As shown, in one specific embodiment of this application, the rubber roller also includes a bearing 4.

[0036] Specifically, the bearing 4 can be a deep groove ball bearing, with its inner ring fixedly fitted to a predetermined shaft section position of the main shaft 1 via an interference fit. The outer ring of the bearing 4 is fitted into the inner annular groove of the bushing 2 via an transition fit, forming a stable radial support structure.

[0037] The spindle 1 and bushing 2 are connected to each other via bearing 4, maintaining a certain radial distance between them. This distance ensures the freedom of movement of the rotating parts while providing necessary space for the flow of lubricating medium. Bearing 4 not only reduces the frictional resistance between the spindle 1 and bushing 2 but also ensures transmission accuracy and operational stability.

[0038] like Figure 4 As shown, in one specific embodiment of this application, the number of bearings 4 is at least two, and each bearing 4 is arranged at intervals from each other along the axial direction of the main shaft 1.

[0039] The inner ring of each bearing 4 is interference-fitted with the main shaft 1, and the outer ring of each bearing 4 is interference-fitted with the inner side of the bushing 2. The axial spacing between adjacent bearings 4 is 1.5-3 times their width. This spacing ensures support rigidity while avoiding interference between the bearings 4. This multi-bearing arrangement improves the rotational stability of the bushing 2 relative to the main shaft 1, and is particularly suitable for operating conditions subject to large radial loads.

[0040] like Figure 4As shown, in one specific embodiment of this application, the rubber roller is further provided with a limiting ring 5, which is mounted on the main shaft 1. The end face of the limiting ring 5 is in close contact with the end face of the inner ring of the bearing 4. The outer diameter of the limiting ring 5 is larger than the inner diameter of the inner ring of the bearing 4, thus limiting the axial displacement of the bearing 4 along the main shaft 1 by means of mechanical stop. The limiting ring 5 is made of high-strength alloy steel, which has a higher hardness than the material of the inner ring of the bearing 4, and can effectively prevent positioning failure caused by contact wear during long-term use.

[0041] In one specific embodiment of this application, the limiting ring 5 is provided with a plurality of through holes 51 evenly distributed in the radial direction, and the axis of the through holes 51 intersects perpendicularly with the axis of the main shaft 1.

[0042] The rubber roller is equipped with fasteners (not shown) corresponding to the number of through holes 51. These fasteners can be hexagonal head screws, with the screw portion passing through the through hole 51 and the end abutting against the main shaft 1. The mechanical fastening method further enhances the axial positioning reliability of the limit ring 5, preventing axial loosening under high-speed operation or vibration conditions.

[0043] like Figure 1 and Figure 4 As shown, in a specific embodiment of this application, the outer peripheral surface of the spindle 1 is machined with a planar portion (not shown) parallel to the axis, which is located at the radial position corresponding to the through hole 51 of the limiting ring 5.

[0044] The end of the fastener forms a surface contact with the flat portion, ensuring stable contact with the fastener end. This flat portion structure not only provides a reliable support surface for the fastener, but also effectively disperses the preload of the fastener by increasing the contact area, avoiding damage to the spindle 1 caused by local stress concentration.

[0045] In one specific embodiment of this application, the rubber sleeve 3 is a black nitrile rubber sleeve. Its rubber component contains 28%-34% acrylonitrile, and its Shore A hardness is 70±5. Carbon black reinforcing agent is added to this rubber material, giving it a black appearance and excellent oil resistance and wear resistance. The choice of nitrile rubber material allows it to maintain good elastic deformation capacity and friction coefficient stability within a working temperature range of -20℃ to 100℃. The inner surface of the rubber sleeve 3 forms a tight fit with the anti-slip texture of the bushing 2, making it suitable for working environments containing media such as lubricating oil and hydraulic oil, effectively preventing the rubber sleeve from slipping.

[0046] This application also provides a conveying device, which includes the rubber roller structure described in the foregoing embodiments, specifically including a main shaft 1, a bushing 2, a rubber sleeve 3, and related supporting components.

[0047] Thanks to the use of rubber rollers with an anti-slip textured structure, this conveying equipment effectively prevents rubber sleeve slippage in heavy oil environments, ensuring stable power transmission performance. Specific implementations of the conveying equipment include, but are not limited to, paper conveying devices in printing machinery, traction mechanisms in film production lines, winding equipment in battery electrode manufacturing, and fabric conveying systems in dyeing and printing machinery. In these applications, the special structural design of the rubber rollers in this application significantly improves the reliability and continuity of equipment operation, reduces the risk of downtime due to rubber sleeve slippage, and extends the service life of key components. This conveying equipment is particularly suitable for industrial production lines that require continuous operation in oily environments for extended periods.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rubber roller, characterized in that, It includes a spindle, a bushing, and a rubber sleeve; the bushing is rotatably fitted onto the spindle and is coaxially arranged with the spindle; the outer surface of the bushing is provided with anti-slip texture; the rubber sleeve is fitted onto the bushing, and the inner circumferential surface of the rubber sleeve is in contact with the anti-slip texture.

2. The rubber roller as described in claim 1, characterized in that, The anti-slip texture is a spiral texture that extends spirally along the axial direction of the bushing.

3. The rubber roller as described in claim 2, characterized in that, The anti-slip texture includes a first spiral extending from one end of the bushing toward its center, and a second spiral extending from the other end of the bushing toward its center, wherein the first spiral and the second spiral have opposite directions of rotation.

4. The rubber roller as described in claim 1, characterized in that, The rubber roller also includes a bearing, the inner ring of which is fitted onto the main shaft, and the outer ring of which is embedded in the inner side of the bushing. The main shaft and the bushing are spaced apart from each other.

5. The rubber roller as described in claim 4, characterized in that, The number of bearings is at least two, and each bearing is arranged at intervals along the axial direction of the main shaft, with at least two bearings respectively located at both ends of the shaft.

6. The rubber roller as described in claim 4, characterized in that, The rubber roller also includes a limiting ring, which is mounted on the main shaft and abuts against the bearing to limit the axial position of the bearing.

7. The rubber roller as described in claim 6, characterized in that, The limiting ring is provided with a plurality of through holes extending in the radial direction, and the rubber roller also includes a fastener, which passes through the through holes and has one end supported on the main shaft.

8. The rubber roller as described in claim 7, characterized in that, The main shaft has a planar portion that is radially perpendicular to it, and one end of the fastener rests on the planar portion.

9. The rubber roller according to any one of claims 1 to 8, characterized in that, The sleeve is a black nitrile rubber sleeve.

10. A conveying device, characterized in that, Includes the rubber roller as described in any one of claims 1 to 9.

Images