Composite roller

Abstract

The utility model relates to a composite roller, which comprises a core body and a functional layer coated on the outer side of the core body. The core body is made of a metal material or a non-metal material, and the functional layer is made of a thermoplastic material. According to the composite type roller, the outer side of the core body is coated with the functional layer, the function of the composite type roller in the rolling process cannot be affected, the composite type roller can slide when clamping stagnation occurs, the functional layer is made of the thermoplastic material and cannot damage mating plates, and therefore the overhaul time can be prolonged, and the service life of the composite type roller is prolonged. And the equipment can be prevented from being damaged, so that the use cost of a user can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of rollers, and particularly relates to a composite roller. Background Art

[0002] As is well known, a roller is a commonly used mechanical component. For a roller with a relatively small diameter, it is also called a needle roller. Rollers and needle rollers are essentially the same, except for the difference in diameter. Rollers or needle rollers are widely used, mainly in bearings, conveying equipment, rotating equipment, etc.

[0003] Currently, commonly used rollers or needle rollers are made of a single metal material, such as stainless steel, high carbon steel, etc. Therefore, they can only be used for rolling applications. One problem is that rolling may get stuck. For example, if iron filings fall into a bearing, the rolling friction will turn into sliding friction, and it is very easy to damage the roller or the mating part.

[0004] To reduce the occurrence of the above situation, the usual countermeasure is to perform maintenance every once in a while. During maintenance, in addition to checking whether there are hard impurities falling in, some lubricating oil also needs to be added to the roller to minimize the damage to the roller and the mating part when sliding friction occurs until the next maintenance. Undoubtedly, this not only increases the workload of users, but also increases the risk of equipment damage. Summary of the Utility Model

[0005] In view of this, the utility model provides a composite roller that can avoid the above problems.

[0006] A composite roller includes a core body and a functional layer coated on the outer side of the core body. The core body is made of a metal material or a non-metal material, and the functional layer is made of a thermoplastic material.

[0007] Further, the metal material is one of GCr15, Q460 steel, high-alloy ultra-high-strength steel, stainless steel, and titanium alloy.

[0008] Further, the non-metal material is a thermoplastic material or a thermosetting material.

[0009] Further, the thermoplastic material is a composite material formed by one or more of POM, PA, PPS, PES, PEEK, PE I, and PAI.

[0010] Further, the thermosetting material is a composite material made of epoxy-based resin, phenolic-based resin and hard fillers or fibers and their woven fabrics.

[0011] Further, the thermoplastic material is a composite material formed by one or more of POM, PA, PPS, PES, PEEK, PE I, and PAI.

[0012] Further, a plurality of engaging structures are provided on the core body.

[0013] Further, in a cross-section perpendicular to the axial direction of the core body, the engaging structure is T-shaped or arc-shaped.

[0014] Further, the composite roller coats the functional layer on the core body through a plastic coating process.

[0015] Compared with the prior art, the composite roller provided by the present utility model coats the functional layer on the outer side of the core body, which neither affects the function of the composite roller during rolling, and when jamming occurs, the composite roller can also slide. Since the functional layer is made of thermoplastic material, it will not damage the mating parts, thereby prolonging the maintenance time, avoiding damage to the equipment, and further reducing the user's usage cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an exploded structural schematic diagram of the composite roller provided by the present utility model.

[0017] Figure 2 is Figure 1 a cross-sectional structural schematic diagram of the composite roller.

[0018] Figure 3 is Figure 1 a structural schematic diagram of the roller of the composite roller having a T-shaped engaging structure.

[0019] Figure 4 is Figure 1 a structural schematic diagram of the roller of the composite roller having an arc-shaped engaging structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further details the specific embodiments of the present utility model. It should be understood that the description of the embodiments of the present utility model herein is not intended to limit the protection scope of the present utility model.

[0021] As Figures 1 to 4 shown, it is a structural schematic diagram of the composite roller provided by the present utility model. The composite roller includes a core body 10 and a functional layer 20 coated on the outer side of the core body 10. It can be imagined that the composite roller may also include some other functional structures, such as flanges used in some special occasions, slots for setting snap rings to prevent falling, etc., which are well-known technologies to those skilled in the art and will not be elaborated herein.

[0022] The core body 10 can be made of high-strength materials and has a columnar structure, and its main function is to ensure the load-bearing capacity of the composite roller. The high-strength materials can be metal materials such as GCr15, Q460 steel, high-alloy ultra-high-strength steel, stainless steel, and titanium alloy, etc., or non-metallic materials. The non-metallic materials can be thermoplastic materials or thermosetting materials. The thermoplastic materials can be a composite material formed by one or more of POM, PA, PPS, PES, PEEK, PE I, and PAI. The thermosetting materials can be a composite material made of epoxy-based resin, phenolic-based resin and hard fillers or fibers and their woven fabrics.

[0023] When the core body 10 is made of metal materials, it can be made by cold heading process or machining process, and when the core body 10 is made of non-metallic materials, it can be made by injection molding process, which are all prior arts and will not be elaborated here. The dimensional specifications of the core body 10 can be designed according to actual needs and will not be described in detail here.

[0024] The functional layer 20 is mainly used to provide wear resistance, and at the same time, it is also used to provide certain lubricity, anti-corrosion performance, etc. The functional layer 20 is coated on the outer part of the core body 10 and can be made of thermoplastic materials. The thermoplastic materials include but are not limited to a composite material formed by one or more of POM, PA, PPS, PES, PEEK, PE I, and PAI. When manufacturing the functional layer 20, it can be combined with the core body 10 through processes such as press fitting, ultrasonic welding, and plastic coating. As Figure 2 shown. The thickness of the functional layer 20 can be designed according to actual needs, such as wear rate, pressure magnitude in the working conditions, etc. If the press fitting process is selected to coat the core body 10 inside the functional layer 20, when preparing the functional layer 20, it can be made into two with equal axial lengths, and at the same time, the inner diameter of the functional layer 20 is equal to or slightly smaller than the outer diameter of the core body 10 to achieve the purpose of tight fitting. As Figure 1 shown, which is a composite roller made by the press fitting process.

[0025] In Figure 2 , the surface of the core body 10 is a flat surface, but in some special working conditions, such as when the pressure is extremely high, in order to prevent the core body 10 from peeling off from the functional layer 20, a plurality of spaced-apart engagement structures can be provided on the core body 10. As Figure 3 shown, the engagement structure is a T shape, which is suitable for working conditions with extremely high pressure. As Figure 4As shown, the occlusal structure is arc-shaped and is applicable to working conditions with medium pressure. Of course, it can be conceived that for different working conditions, some other occlusal structures can be designed, such as serrated, wavy, etc., which will not be elaborated one by one here. For Figure 3 and Figure 4 The composite roller shown is preferably prepared by a plastic coating process. Only its structure is shown in the figure, and the functional layer 20 is divided into two sections.

[0026] In addition, if the press-fitting process is selected to wrap the core body 10 inside the functional layer 20, when preparing the functional layer 20, it can be made into two with equal axial lengths. At the same time, the inner diameter of the functional layer 20 is equal to or slightly smaller than the outer diameter of the core body 10 to achieve the purpose of tight fitting.

[0027] Compared with the prior art, the composite roller provided by the present utility model wraps the functional layer 20 outside the core body 10, which neither affects the function of the composite roller during rolling, and when jamming occurs, the composite roller can still slide. Since the functional layer 20 is made of a thermoplastic material, it will not damage the mating part, thereby prolonging the maintenance time, avoiding damage to the equipment, and further reducing the user's usage cost.

[0028] The above is only the preferred embodiment of the present utility model and is not used to limit the protection scope of the present utility model. Any modification, equivalent replacement or improvement within the spirit of the present utility model is covered by the scope of the claims of the present utility model.

Claims

1. A composite roller, characterized in that: The composite roller comprises a core body and a functional layer coated on the outside of the core body, the core body is made of a metal material or a non-metal material, and the functional layer is made of a thermoplastic material.

2. The composite roller according to claim 1, wherein: The metal material is one of GCr15, Q460 steel, high alloy ultra-high strength steel, stainless steel, and titanium alloy.

3. The composite roller according to claim 1, characterized in that: The non-metallic material is a thermoplastic material or a thermosetting material.

4. The composite roller according to claim 3, wherein: The thermoplastic material is a composite material formed by one or more of POM, PA, PPS, PES, PEEK, PEI and PAI.

5. The composite roller according to claim 3, wherein: The thermosetting material is a composite material made of epoxy resin, phenolic resin, hard filler or fiber and their braided fabric.

6. The composite roller according to claim 1, characterized in that: The thermoplastic material is a composite material formed by one or more of POM, PA, PPS, PES, PEEK, PEI and PAI.

7. The composite roller according to claim 1, characterized in that: A plurality of bite structures are arranged on the core.

8. The composite roller according to claim 7, characterized in that: In a cross section perpendicular to the axial direction of the core body, the engaging structure is T-shaped or arc-shaped.

9. The composite roller according to claim 1, wherein: The composite roller is coated with the functional layer on the core through a coating process.

10. The composite roller according to claim 1, characterized in that: The composite roller is coated with the functional layer on the core body through a press-fitting process.

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