Small POM bushing roller
By assembling multiple POM bushings and metal sleeves combined with bearing structures on the outer circumference of the roller sleeve, the bending deformation problem of the large length and thin ratio roller is solved, high coaxiality and stable operation are achieved, and the damaged parts are easily replaced separately, which improves the operating reliability of the equipment.
Patent Information
- Application Number
- CN202421751216.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The existing POM rollers are prone to bending and deforming due to concentrated machining stress in the case of large length and thin ratios, which affects the coaxiality and equipment stability.
The design of multiple POM bushings assembled on the outer periphery of the sleeve is combined with the metal sleeve and bearing structure to ensure the stability and maintainability of the rollers, and the bushings are fixed through mechanical fit or other connection methods.
It effectively reduces processing stress, avoids bending and deformation, maintains high coaxiality, improves equipment operation stability, and the damaged parts can be replaced separately, improving the flexibility and maintenance of the rollers.
Smart Images
Figure CN223162572U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rollers, in particular to a small POM bushing roller. Background Art
[0002] A roller is a common cylindrical rotatable object in machinery. Its main functions include supporting, guiding, conveying, and driving materials or products. Its main components are a core shaft, a roller body, and bearings. Among them, rollers with POM as the roller body are widely used because of its high wear resistance, low friction, and chemical corrosion resistance.
[0003] Existing POM roller bodies are usually machined from solid bar stock. When the required POM roller has a small slenderness ratio, it has good processability and working stability. However, when the required POM roller has a large slenderness ratio, specifically an outer diameter of 20-40mm and a length greater than 80mm, the POM roller body after machining is prone to generate large processing stress. After working for a period of time, it will bend and deform due to stress concentration. This deformation not only makes the coaxiality of the roller fail to meet the standard, but also has a serious impact on the stable operation of the equipment. Utility Model Content
[0004] In order to overcome the disadvantage that the existing POM material roller body is easily affected by machining defects when used in applications with large aspect ratios, the utility model provides a small POM bushing roller.
[0005] Technical solution: A small POM bushing roller, including:
[0006] Mandrel;
[0007] Roller body; the roller body includes a sleeve and a plurality of POM bushings, the outer periphery of the sleeve is sleeved with a plurality of POM bushings, the sleeve has mounting grooves at both ends, and the sleeve is sleeved on the core shaft; and
[0008] Bearings, two bearings are sleeved on the core shaft, and the two bearings are respectively installed in the two installation grooves.
[0009] Furthermore, it is particularly preferred that both ends of the core shaft are processed into a flat strip shape.
[0010] In addition, it is particularly preferred that the sleeve is made of metal.
[0011] In addition, it is particularly preferred that the sleeve is made of one or more of alloy steel, stainless steel, aluminum alloy, copper alloy or titanium alloy.
[0012] In addition, it is particularly preferred that a circlip is further included. A clamping groove is provided at both ends of the mandrel. There are two circlips, which are respectively installed in the two clamping grooves, and the circlips are used for axially fixing the bearing.
[0013] In addition, it is particularly preferred that the bearing is one or more of a rolling bearing, a sliding bearing or a thrust ball bearing.
[0014] In addition, it is particularly preferred that the plurality of POM bushings have the same size and are evenly distributed on the outer circumference of the sleeve.
[0015] In addition, it is particularly preferred that the number of the POM bushings is at least two.
[0016] In addition, it is particularly preferred that a wear-resistant coating is provided on the outer surface of the POM bushing, and the material of the wear-resistant coating is one or more of polytetrafluoroethylene, polyimide, silicon carbide or alumina.
[0017] In addition, it is particularly preferred that the POM bushing and the sleeve are connected by one of mechanical fit, interference fit, bonding or bolt connection.
[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0019] 1. The roller body of the present utility model is manufactured by assembling a plurality of POM bushings on the outer circumference of the sleeve to meet the use requirements of the POM roller with a large length-to-diameter ratio. The POM bushings can be set to a smaller length-to-diameter ratio as required, and the stress generated after machining is small, and it is not easy to generate bending deformation, so as to ensure that the POM roller maintains a high coaxiality during long-term operation and improve the operation stability of the equipment.
[0020] 2. The roller body of the present utility model is composed of a plurality of POM bushings. When one of the POM bushings is worn or damaged, it can be replaced separately without replacing the entire roller, improving the flexibility and maintainability of the roller. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.
[0022] Figure 2 is an exploded three-dimensional structure diagram of the present utility model.
[0023] Figure 3 is a partial separated three-dimensional structure diagram of the present utility model.
[0024] Among them, the above-mentioned drawings include the following reference numerals: 1 - mandrel, 101 - clamping groove, 2 - sleeve, 201 - mounting groove, 3 - POM bushing, 4 - bearing, 5 - circlip. DETAILED DESCRIPTION OF THE INVENTION
[0025] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.
[0026] Example: A small POM bushing roller, such as Figures 1 - 3 As shown, it includes a core shaft 1, a roller body and bearings 4. The roller body includes a sleeve 2 and three POM bushings 3. Three POM bushings 3 are sleeved on the outer periphery of the sleeve 2. The sleeve 2 is sleeved on the core shaft 1. Mounting grooves 201 are opened at both ends of the sleeve 2. Two bearings 4 are sleeved on the core shaft 1. The two bearings 4 are respectively installed in two mounting grooves 201, so that the roller body can rotate smoothly around the core shaft 1.
[0027] It also includes a retaining spring 5. A retaining groove 101 is opened at both ends of the core shaft 1. There are two retaining springs 5, which are respectively installed in the two retaining grooves 101. The retaining spring 5 is used to axially fix the bearing 4 to prevent the bearing 4 from moving or loosening in the axial direction, thereby ensuring the rotation stability of the roller.
[0028] Among them, the core shaft 1 serves as the support and rotation center of the entire roller. Both ends of the core shaft 1 are milled into flat strips, which can effectively prevent the core shaft 1 from axial movement when rotating at high speed, thereby ensuring the rotation stability of the roller body.
[0029] The sleeve serves as a carrier of the POM bushing, and the sleeve 2 is made of metal, such as stainless steel, to provide sufficient strength and corrosion resistance.
[0030] The bearing 4 adopts a rolling bearing to provide appropriate support and low friction operation.
[0031] The three POM bushings 3 have the same size and are evenly distributed on the outer circumference of the sleeve 2, forming a POM roller body that meets the required large aspect ratio.
[0032] The outer surface of the POM bushing 3 is provided with a wear-resistant coating, and the material of the wear-resistant coating is aluminum oxide to enhance its surface wear resistance and extend the service life of the roller.
[0033] The POM bushing 3 and the sleeve 2 are connected by mechanical cooperation, such as mortise and tenon connection, to ensure the fixation of the bushing on the sleeve and prevent it from falling off or shifting during operation.
[0034] Although the present utility model has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made to the present utility model without departing from the principle and spirit scope defined by the claims. Therefore, the detailed description of the embodiments of this disclosure is only for explanation and not for limiting the present utility model, and the scope of protection is defined by the content of the claims.
Claims
1. A small POM bushing roller, characterized in that, Comprising: A mandrel (1); A roller body; the roller body includes a sleeve (2) and a plurality of POM bushings (3), the outer periphery of the sleeve (2) is sleeved with a plurality of POM bushings (3), and mounting grooves (201) are opened at both ends of the sleeve (2). The sleeve (2) is sleeved on the mandrel (1); and Bearings (4), two bearings (4) are sleeved on the mandrel (1), and the two bearings (4) are respectively installed in the two mounting grooves (201).
2. A small POM bushing roller according to claim 1, characterized in that, Both ends of the mandrel (1) are processed into flat strips.
3. A small POM bushing roller according to claim 2, characterized in that, The material of the sleeve (2) is a metal material.
4. A small POM bushing roller according to claim 3, characterized in that, The material of the sleeve (2) is one or more of alloy steel, stainless steel, aluminum alloy, copper alloy or titanium alloy.
5. A small POM bushing roller according to claim 4, characterized in that, It further comprises: Circlips (5), a clamping groove (101) is opened at both ends of the mandrel (1), there are two circlips (5), and they are respectively installed in the two clamping grooves (101), and the circlips (5) are used for axially fixing the bearings (4).
6. A small POM bushing roller according to claim 5, characterized in that, The bearings (4) are one or more of rolling bearings, sliding bearings or thrust ball bearings.
7. A small POM bushing roller according to claim 6, characterized in that, The plurality of POM bushings (3) are of the same size and are evenly distributed on the outer periphery of the sleeve (2).
8. A small POM bushing roller according to claim 7, characterized in that, The number of the POM bushings (3) is at least two.
9. A small POM bushing roller according to claim 8, characterized in that, A wear-resistant coating is provided on the outer surface of the POM bushing (3), and the material of the wear-resistant coating is one or more of polytetrafluoroethylene, polyimide, silicon carbide or alumina.
10. A small POM bushing roller according to claim 9, characterized in that, The POM bushing (3) is connected to the sleeve (2) by one of mechanical fit, interference fit, bonding or bolt connection.