A new plastic-gold combined composite material structure

Abstract

The utility model provides a novel plastic metal combined composite material structure, including metal base, metal spiral and resin layer, the metal base upper surface has a plurality of same direction and equal interval arrangement's recess, the recess is placed with a plurality of metal spiral, the resin layer is located metal base top, covers metal base upper surface, and through the mode of mould pressing or injection molding and metal base and metal spiral form integral structure, the utility model discloses a composite material structure plastic metal combined strength is high, and resin layer thickness can be in 0.5mm 3mm, can satisfy the manufacturing, use condition and working condition requirement of various sliding bearing.

Description

Technical Field

[0001] This utility model relates to the field of composite material technology, and more specifically, to a novel plastic-metal composite material structure. Background Technology

[0002] With the continuous advancement of industrial technology, composite materials are widely used in numerous fields due to their superior performance. In particular, composite materials composed of polymers and metals are highly favored for their unique performance advantages. Polymers possess numerous advantages, including low density, high specific strength, good wear resistance, excellent toughness, strong fatigue resistance, and stable chemical properties, making them resistant to corrosion. However, under long-term stress conditions, they are prone to stress relaxation and creep, leading to a decline in material performance. Metals, on the other hand, are known for their high compressive and tensile strength and good thermal conductivity, but they typically suffer from drawbacks such as high density and susceptibility to rust. Therefore, cleverly combining polymers and metals into composite materials can fully leverage the advantages of both while overcoming their respective disadvantages, resulting in lightweight, high-strength, and superior-performance composite materials, which are widely used in aerospace, automotive manufacturing, and high-end equipment fields. Taking aero-engine bearings as an example, which need to operate under high temperature and high speed conditions, traditional metal bearings are insufficient due to high frictional loss and susceptibility to corrosion. Polymer-metal composite bearings, by combining the friction-reducing and wear-resistant properties of polymers with the high strength of metals, have become an ideal solution.

[0003] Currently, the main method for joining polymer and metal materials used in manufacturing sliding bearings is mechanical bonding. This involves using mechanical fasteners or increasing the surface roughness of the substrate, then leveraging the adhesive properties of the polymer to bond it to the metal. Common methods include machining grooves and rivets on the substrate surface. However, these manufacturing processes have some drawbacks, particularly at the interface between the metal and polymer, where significant residual stress can easily occur. When machining sliding bearings using this material as a whole, cracks are prone to appear, especially when machining through holes, leading to higher scrap rates and increased production costs. Furthermore, while sintering copper powder or copper spiral structures can mitigate these problems to some extent, the specifications of sliding bearings manufactured using these structures are typically limited by the furnace size of the sintering furnace, resulting in lower production efficiency. Additionally, these bonding structures are not well-suited for situations where the pure resin layer is too thin. Although 3D printing technology can solve the problems of both bonding structures, its high cost limits its widespread application in actual production. Patent CN111941712A discloses a connection structure in which a steel substrate is formed with regularly distributed convex and concave surfaces through various processing methods. The depth of the convex and concave surfaces is 0.5-1mm. Although the structure is simple, the processing of the convex and concave surfaces involves multiple processes such as sandblasting and etching, which is relatively complex. Furthermore, a "four-point continuous" spot welding method is used to weld multiple layers of stainless steel wire mesh, and there are certain requirements for the flatness of the wire mesh. The four-point welding fixing method itself relies on the close contact between the mesh surface and the steel substrate to transfer welding stress. Uneven mesh surface will cause uneven stress at the welding points, and some areas may have insufficient welding strength due to loose adhesion, which directly leads to a decrease in the overall strength of the plastic-metal bond.

[0004] In summary, there is an urgent need to develop a polymer-metal composite material connection structure suitable for manufacturing sliding bearings, which can reduce interfacial residual stress, reduce the risk of processing cracks, overcome specification limitations, improve production efficiency, and be applicable to different resin layer thicknesses with controllable costs, so as to promote the technological innovation of high-performance composite material sliding bearings. Utility Model Content

[0005] In view of the technical problems existing in the connection methods of polymer materials and metal materials used in the manufacture of sliding bearings, a novel plastic-metal composite material structure that can be used to manufacture sliding bearings is provided.

[0006] A novel plastic-metal composite material structure includes a metal matrix, a metal helix, and a resin layer; The upper surface of the metal substrate has several grooves arranged in the same direction and at equal intervals; A plurality of metal spirals are placed in the groove, and the metal spirals are fixedly installed in the groove by laser welding. The resin layer is located above the metal substrate, covering the upper surface of the metal substrate, and forms an integral structure with the metal substrate and the metal spiral by molding or injection molding.

[0007] Furthermore, within the groove, a plurality of metal spirals are arranged sequentially end-to-end along the axial direction of the groove, and each metal spiral is coaxial with the groove.

[0008] Furthermore, on the metal substrate, the spacing between adjacent grooves is 1mm-5mm, and the depth of the groove is 0.5mm-3mm; the wire diameter of the metal spiral is 0.3mm-0.8mm, the outer diameter is 1mm-6mm, and the pitch is 2mm-5mm.

[0009] Furthermore, the cross-section of the groove is triangular, rectangular, or arc-shaped.

[0010] Furthermore, the metal spiral is made of stainless steel or copper.

[0011] Furthermore, the self-lubricating composite material used in the resin layer includes, but is not limited to, modified polyaryletherketone composite material and modified polyoxymethylene composite material.

[0012] Furthermore, the thickness of the resin layer is 0.5mm-3mm.

[0013] Compared with the prior art, the present invention has the following advantages: Compared with traditional plastic-metal bonded composite material structures used to manufacture sliding bearings, the novel plastic-metal bonded composite material structure provided by this utility model has high plastic-metal bond strength, which can meet the manufacturing, use conditions and working requirements of various sliding bearings. It is also less prone to stress concentration, has good machinability, and will not crack, chip, or missing material during machining.

[0014] Based on the above reasons, this utility model can be widely promoted in the field of sliding bearings, especially in the field of plastic composite materials, and is more suitable for large sliding bearings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the novel plastic-metal composite material structure described in this utility model.

[0017] Figure 2 This is a schematic diagram of the metal matrix and the metal spiral structure described in this utility model.

[0018] Figure 3 This is a schematic diagram of the metal matrix structure of the novel plastic-metal composite material structure described in Example 1.

[0019] In the diagram: 1. Metal substrate; 2. Metal spiral; 3. Resin layer; 4. Groove. Detailed Implementation

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0024] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0025] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0027] like Figure 1 As shown, this utility model provides a novel plastic-metal composite material structure, including a metal matrix 1, a metal spiral 2, and a resin layer 3; The upper surface of the metal substrate 1 has several grooves 4 arranged in the same direction and at equal intervals; A plurality of metal spirals 2 are placed in the groove 4, and the metal spirals 2 are fixedly installed in the groove 4 by laser welding. The resin layer 3 is located above the metal substrate 1, covering the upper surface of the metal substrate 1, and forms an integral structure with the metal substrate 1 and the metal spiral 2 by molding or injection molding.

[0028] Compared with existing plastic-metal bonded composite material structures used in the manufacture of sliding bearings, the novel plastic-metal bonded composite material structure described in this utility model has the following advantages: 1) The upper surface of the metal substrate has several grooves arranged in the same direction and at equal intervals. This regular design not only simplifies the processing flow, but also provides a precise positioning basis for the subsequent installation of the metal spiral, ensuring the accuracy of the component placement. At the same time, the cooperation between the grooves and the metal spiral adds a certain degree of flexibility to the overall structure, making it more advantageous in balancing the precision and flexibility of the structure. 2) The metal spiral is fixed in the groove by laser welding. Laser welding technology itself has the characteristics of strong and precise welding, which can form a stable and reliable connection between the metal spiral and the groove.

[0029] Furthermore, within the groove 4, a plurality of metal spirals 2 are arranged sequentially end to end along the axial direction of the groove 4, and each metal spiral 2 is coaxial with the groove 4.

[0030] Furthermore, on the metal substrate 1, the spacing between adjacent grooves 4 is 1mm-5mm, and the depth of the groove 4 is 0.5mm-3mm.

[0031] Furthermore, the cross-section of the groove 4 is a regular or irregular shape such as a triangle, rectangle, or arc.

[0032] Furthermore, the metal spiral 2 and the metal substrate 1 are made of the same or different materials; preferably, the metal spiral 2 is made of stainless steel or copper.

[0033] Furthermore, the metal spiral 2 has a wire diameter of 0.3mm-0.8mm, an outer diameter of 1mm-6mm, and a pitch of 2mm-5mm.

[0034] Furthermore, the substrate of the resin layer 3 is a self-lubricating composite material, such as an engineering plastic, a combination of multiple engineering plastics, a general-purpose plastic, or a combination of multiple general-purpose plastics.

[0035] Furthermore, the thickness of the resin layer 3 is 0.5mm-3mm.

[0036] Furthermore, the self-lubricating composite material used in the resin layer 3 includes, but is not limited to, modified polyaryletherketone composite material and modified polyoxymethylene composite material.

[0037] This invention achieves a high-strength, high-machining-performance, and low-cost plastic-metal composite material structure by designing grooves on the surface of a metal substrate and filling the grooves with a metal spiral structure. It is particularly suitable for thin resin layer composite materials with a resin layer thickness of 0.5mm-3mm.

[0038] Furthermore, by precision machining the composite material structure, sliding bearings can be manufactured. Specifically, high-precision machining equipment, such as CNC lathes and machining centers, can be used to perform precision machining operations such as turning, milling, and grinding, based on the final dimensional accuracy and surface quality requirements of the product. At the same time, advanced testing instruments can be used to perform comprehensive dimensional and surface quality inspections on the finished products, strictly controlling product quality and ultimately obtaining high-quality finished products that meet design standards.

[0039] Furthermore, precision machining equipment can be used to precisely machine regular grooves 4 on the surface of the metal substrate 1. The dimensions (including depth, width, etc.), shape (such as rectangle, trapezoid, etc.) and arrangement of the grooves 4 on the surface of the metal substrate 1 are strictly implemented according to the specific engineering design plan in the early stage. Through precise machining parameter setting and machining process control, the machining accuracy and consistency of the grooves 4 are ensured. Based on the material properties of the metal substrate 1, the operating conditions, and the expected connection performance requirements, a metal spiral 2 of suitable material and size can be selected as the connecting layer. A high-precision positioning device can be used to accurately place the metal spiral 2 into the pre-processed groove 4, ensuring its accurate position and good fit between the metal spiral 2 and the groove 4, creating favorable conditions for subsequent welding processes. Laser welding technology can be used to complete the process, with precise control of key parameters such as laser power, pulse frequency, and spot diameter. During the welding process, professional monitoring equipment can be used to monitor changes in parameters such as the temperature field and molten pool morphology of the welding area in real time, ensuring that the laser energy is uniformly applied to the joint between the connector (metal spiral 2) and the metal substrate 1, so that the two are tightly fused into a whole, forming a high-strength, high-quality welded joint that meets the requirements of structural strength and reliability.

[0040] Compared with traditional plastic-metal composite structures (structure A (metal matrix and resin layer connected by sintered copper powder), structure B (metal matrix and resin layer connected by surface-machined grooves), and structure C (metal matrix and resin layer connected by welded mesh), the novel high-performance plastic-metal composite material structure provided by this utility model has a simple manufacturing process, high plastic-metal bonding strength, and can meet the manufacturing, use conditions, and operating requirements of sliding bearings under various working conditions. It is also less prone to stress concentration, has good machinability, and will not crack, chip, or lack material during machining. It can meet the needs of diversified and large-scale sliding bearings.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A novel plastic-metal composite material structure, characterized in that, Includes a metal substrate, a metal spiral, and a resin layer; The upper surface of the metal substrate has several grooves arranged in the same direction and at equal intervals; A plurality of metal spirals are placed in the groove, and the metal spirals are fixedly installed in the groove by laser welding. The resin layer is located above the metal substrate, covering the upper surface of the metal substrate, and forms an integral structure with the metal substrate and the metal spiral by means of molding or injection molding.

2. The novel plastic-metal composite material structure according to claim 1, characterized in that, Within the groove, a plurality of metal spirals are arranged sequentially end to end along the axial direction of the groove, and each metal spiral is coaxial with the groove.

3. The novel plastic-metal composite material structure according to claim 1, characterized in that, On the metal substrate, the spacing between adjacent grooves is 1mm-5mm, and the depth of the grooves is 0.5mm-3mm; the diameter of the metal spiral is 0.3mm-0.8mm, the outer diameter is 1mm-6mm, and the pitch is 2mm-5mm.

4. The novel plastic-metal composite material structure according to claim 1, characterized in that, On the metal substrate, the cross-section of the groove is triangular, rectangular, or arc-shaped.

5. The novel plastic-metal composite material structure according to claim 1, characterized in that, The metal spiral on the metal substrate is made of stainless steel or copper.

6. The novel plastic-metal composite material structure according to claim 1, characterized in that, The self-lubricating composite material used in the resin layer on the metal matrix includes, but is not limited to, modified polyaryletherketone composite material and modified polyoxymethylene composite material.

7. The novel plastic-metal composite material structure according to claim 1, characterized in that, The thickness of the resin layer on the metal substrate is 0.5mm-3mm.

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