Aluminum alloy wear-resistant guide sleeve and die
By using 7 series aluminum alloy materials, setting up graphite mounting grooves, adding aluminum alloy hard anodized layers and Teflon coated guide bushes, the problems of insufficient wear resistance and poor high temperature resistance of existing guide bush materials are solved. Achieved performance improvement and cost reduction.
Patent Information
- Application Number
- CN202421407737.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-06-19
AI Technical Summary
Existing guide sleeve materials such as steel guide sleeves have insufficient wear resistance and poor high temperature resistance, graphite copper guide sleeves are prone to corrosion, have low ductility and heavier weight, resulting in a greatly reduced cost and service life in specific fields.
The guide bush is made of 7 series aluminum alloy material, and a graphite installation slot is set on the inner wall to be filled with graphite. An aluminum alloy hard anodized layer and Teflon coating are added to improve the wear resistance, high temperature resistance, and resistance of the guide bush. Corrosive and lubricating.
The wear resistance, high temperature resistance, corrosion resistance and lubricity of the guide bushing are improved, making its performance no worse than that of copper or steel guide bushings, while reducing cost and weight.
Smart Images
Figure CN222377009U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of mechanical equipment, in particular to an aluminum alloy wear-resistant guide sleeve and a mold. Background Art
[0002] Guide sleeves are widely used parts in the mechanical field, mainly used in the mold industry, playing a guiding role to ensure that the guide pins and guide sleeves of the mold can be accurately matched, thereby ensuring the accurate movement and stable operation of the mold. With the development of industrial technology, guide sleeve technology is also constantly improving to adapt to more complex and demanding working environments. Currently, commonly used guide sleeves are divided into steel guide sleeves and graphite copper guide sleeves. During the manufacturing and use of molds, these two materials still have some defects. For example: the steel guide sleeve material has insufficient wear resistance and poor high temperature resistance, which leads to premature wear or deformation of the guide sleeve, affecting the accuracy and stability of the mold; graphite copper guide sleeves are prone to corrosion, have relatively low ductility, and are heavy, etc., which greatly reduces the cost and service life in specific fields and increases the cost.
[0003] In view of this, this application is hereby filed. Utility Model Content
[0004] The utility model aims to provide an aluminum alloy wear-resistant guide sleeve and a mold, aiming to improve at least one problem mentioned in the background technology.
[0005] The embodiment of the utility model is achieved as follows:
[0006] In a first aspect, the utility model provides an aluminum alloy wear-resistant guide sleeve, comprising a guide sleeve body, wherein the inner wall of the guide sleeve body is provided with a plurality of graphite installation grooves, and the graphite installation grooves are filled with graphite;
[0007] The guide sleeve body comprises a cylindrical main body part made of 7 series aluminum alloy and an aluminum alloy hard anodized layer. The aluminum alloy hard anodized layer is arranged on the wall surface of the main body part and at least covers the inner wall of the main body part.
[0008] In an optional embodiment, the area of all graphite installation grooves on the inner wall of the guide sleeve body accounts for 25-75%.
[0009] In an optional embodiment, a plurality of graphite mounting grooves are evenly distributed on the inner wall.
[0010] In an optional embodiment, each graphite mounting groove is annular, strip-shaped or spiral-shaped.
[0011] In an optional embodiment, the depth of each graphite mounting groove is 0.4 to 0.6 mm;
[0012] And / or, the width of each graphite installation groove is 8 to 10 mm.
[0013] In an optional embodiment, the width of the slot opening of each graphite mounting slot is smaller than the width of the slot bottom.
[0014] In an optional embodiment, the guide sleeve body further includes a Teflon coating, and the Teflon coating is disposed on a side of the aluminum alloy hard anodized layer away from the main body portion.
[0015] In an optional embodiment, the thickness of the aluminum alloy wear-resistant guide sleeve is 2 to 10 mm;
[0016] And / or, the inner diameter of the aluminum alloy wear-resistant guide sleeve is 4 to 40 mm, the outer diameter is 8 to 50 mm, and the length is 5 to 50 mm.
[0017] In an optional embodiment, the thickness of the aluminum alloy hard anodized layer is 45-55 μm.
[0018] In a second aspect, the utility model provides a mold, comprising an aluminum alloy wear-resistant guide sleeve as described in any one of the aforementioned embodiments.
[0019] The beneficial effects of the embodiments of the utility model are:
[0020] 7 series aluminum alloy is a commonly used aluminum alloy at present, which has good high temperature resistance, corrosion resistance, hardness and wear resistance, but its performance is still slightly worse than that of copper graphite guide sleeve and steel guide sleeve when directly applied to the guide sleeve. By setting a hard anode anodized layer, the hardness, wear resistance, high temperature resistance and corrosion resistance of at least the inner wall side of the guide sleeve can be improved, so that the various performances of the guide sleeve of the present application are not worse than those of the guide sleeve made of copper or steel; by setting a graphite installation groove on the inner wall of the guide sleeve and filling the groove with graphite, the lubricity of the inner wall of the guide sleeve can be increased; in addition, the cost of aluminum alloy is slightly lower than that of copper and steel, and the weight is lighter. Therefore, the aluminum alloy wear-resistant guide sleeve provided by the embodiment of the utility model has the characteristics of low cost, good wear resistance, corrosion resistance, high temperature resistance, hardness, and lubricity. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic structural diagram of a first guide sleeve provided in an embodiment of the utility model;
[0023] Figure 2 A cross-sectional view of a first guide sleeve provided in an embodiment of the utility model;
[0024] Figure 3 A schematic structural diagram of a guide sleeve body of a second guide sleeve provided in an embodiment of the utility model;
[0025] Figure 4 A cross-sectional view of a guide sleeve body of a second guide sleeve provided in an embodiment of the utility model;
[0026] Figure 5 A schematic structural diagram of a guide sleeve body of a third guide sleeve provided in an embodiment of the utility model.
[0027] Icons: 100-guide sleeve; 110-guide sleeve body; 111-main part; 112-aluminum alloy hard anodized layer; 113-Teflon coating; 120-graphite mounting groove; 130-graphite. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0031] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0032] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0034] like Figures 1 to 5 As shown, the embodiment of the utility model provides an aluminum alloy wear-resistant guide sleeve 100, including a guide sleeve body 110, the inner wall of the guide sleeve body 110 is provided with a plurality of graphite installation grooves 120, and the graphite installation grooves 120 are filled with graphite 130;
[0035] The guide sleeve body 110 includes a cylindrical main body portion 111 made of 7 series aluminum alloy and an aluminum alloy hard anodized layer 112 . The aluminum alloy hard anodized layer 112 is arranged on the wall surface of the main body portion 111 and at least covers the inner wall of the main body portion 111 .
[0036] 7 series aluminum alloy is a commonly used aluminum alloy at present, which has good high temperature resistance, corrosion resistance, hardness and wear resistance, but its comprehensive performance is still slightly worse than that of copper graphite 130 guide sleeve 100 and steel guide sleeve 100 when directly applied to the guide sleeve 100. By setting a hard anode anodized layer, the hardness, wear resistance, high temperature resistance and corrosion resistance of at least the inner wall side of the guide sleeve 100 can be improved, so that the various performances of the guide sleeve 100 of the present application are not worse than those of the guide sleeve 100 made of copper or steel; by setting a graphite installation groove 120 on the inner wall of the guide sleeve 100 and filling the groove with graphite 130, the lubricity of the inner wall of the guide sleeve 100 can be increased; in addition, the cost of aluminum alloy is slightly lower than that of copper and steel. Therefore, the aluminum alloy wear-resistant guide sleeve 100 provided by the embodiment of the utility model has the characteristics of low cost, good wear resistance, corrosion resistance, high temperature resistance, hardness, and lubricity.
[0037] Optionally, in order to ensure that the guide sleeve 100 has better mechanical properties and corrosion resistance, the thickness of the aluminum alloy hard anodized layer 112 is 40 to 60 μm (eg, 40 μm, 50 μm or 60 μm).
[0038] Optionally, the aluminum alloy hard anodized layer 112 is a functional layer obtained by hard anodizing the aluminum alloy. The aluminum alloy hard anodized layer 112 is formed by: using a 7 series aluminum alloy to make a cylindrical body, and then hard anodizing the wall surface including at least the inner wall thereof to obtain a main body 111 and an aluminum alloy hard anodized layer 112 covering at least the inner wall of the main body 111.
[0039] Optionally, the guide sleeve body 110 further includes a Teflon coating 113 , and the Teflon coating 113 is disposed on a side of the aluminum alloy hard anodized layer 112 away from the main body portion 111 .
[0040] The aluminum alloy hard anodized layer 112 formed after the hard anodizing process has pores, and the Teflon coating 113 can close these pores to increase the wear resistance, corrosion resistance and self-lubricity of the inner wall of the guide sleeve 100 .
[0041] Optionally, to ensure that the guide sleeve 100 has better performance, the thickness of the Teflon coating 113 is 3-5 μm (eg, 3 μm, 4 μm or 5 μm).
[0042] Preferably, in order to ensure the strength of the guide sleeve 100 and ensure that the inner wall of the guide sleeve 100 has better lubricity, the area of all graphite mounting grooves 120 on the inner wall accounts for 25% to 75% (eg, 25%, 50% or 75%).
[0043] Preferably, in order to ensure the strength of the guide sleeve 100 at all locations and the lubricity of the inner wall of the guide sleeve 100 to be more uniform, a plurality of graphite installation grooves 120 are evenly distributed on the inner wall.
[0044] Optionally, each graphite mounting groove 120 is annular (eg Figure 1 and Figure 2 As shown), long strips (such as Figure 3 and Figure 4 as shown) or spiral (as Figure 5 shown).
[0045] Optionally, in order to ensure the strength of the guide sleeve 100 and ensure that the inner wall of the guide sleeve 100 has better lubricity, the depth of each graphite mounting groove 120 is 0.4 to 0.6 mm (for example, 0.4 mm, 0.5 mm or 0.6 mm); and / or, the width of each graphite mounting groove 120 is 8 to 10 mm (for example, 8 mm, 9 mm or 10 mm).
[0046] Optionally, in order to prevent the graphite 130 in the graphite installation groove 120 from falling off easily, the width of the groove opening of each graphite installation groove 120 is smaller than the width of the groove bottom.
[0047] Furthermore, on a plane perpendicular to the extending direction of each graphite installation groove 120 , the cross-sectional shape of the graphite installation groove 120 is an isosceles trapezoid.
[0048] Optionally, in order to ensure the strength of the guide sleeve 100 and to be applicable to most manufacturing devices, the thickness of the aluminum alloy wear-resistant guide sleeve 100 is 2 to 10 mm (2 mm, 5 mm, 8 mm or 10 mm); and / or, the inner diameter of the aluminum alloy wear-resistant guide sleeve 100 is 4 to 40 mm (for example, 4 mm, 6 mm, 8 mm, 10 mm, 20 mm, 30 mm or 40 mm), the outer diameter is 8 to 50 mm (for example, 8 mm, 10 mm, 15 mm, 20 mm, 30 mm, 40 mm or 50 mm), and the length is 5 to 50 mm (for example, 5 mm, 10 mm, 15 mm, 20 mm, 30 mm, 40 mm or 50 mm).
[0049] The embodiment of the utility model provides a mold, which includes the aluminum alloy wear-resistant guide sleeve 100 provided by the embodiment of the utility model.
[0050] Experimental example
[0051] One experimental group and two comparison groups were provided.
[0052] The guide sleeve 100 of the experimental group has a structure as follows Figure 1 As shown, its length is 30mm, inner diameter is 20mm, outer diameter is 26mm, the total area of graphite mounting groove 120 accounts for 30% of the inner wall area, the width of each graphite mounting groove 120 is 8mm, the width of the groove bottom is 9mm, the depth is 0.5mm, the thickness of the aluminum alloy hard anodized layer 112 is 50μm, the thickness of the Teflon coating 113 is 4μm, and the material of the main body 111 is 7 series aluminum alloy, the specific model is 7075;
[0053] The structure of the comparison group 1 is exactly the same as that of the experimental group, except that the guide sleeve body 110 of the comparison group is made of steel, specifically 316 stainless steel;
[0054] The structure of the comparison group 2 is exactly the same as that of the experimental group, except that the guide sleeve body 110 of the comparison group is made of copper, specifically high-strength brass.
[0055] The GB / T228.1-2021 method was used to test the performance of the experimental group and the comparison group, and the test results were recorded in Table 1.
[0056] Table 1 Performance comparison between experimental group and comparative example
[0057]
[0058]
[0059] It can be seen from the test results in Table 1 that the density of the guide sleeve 100 provided by the utility model is significantly lower than that of the comparison group 1 and the comparison group 2. The aluminum alloy wear-resistant conductor provided by the embodiment of the utility model has excellent high temperature resistance, wear resistance, corrosion resistance and self-lubrication, and its strength and hardness are better than brass and close to steel, and its thermal conductivity is significantly better than that of steel and brass.
[0060] In summary, the aluminum alloy wear-resistant guide sleeve 100 provided in the embodiment of the utility model has the following characteristics:
[0061] 1. The guide sleeve 100 made of 7 series aluminum alloy as the main material has better wear resistance and high temperature resistance than the steel guide sleeve 100, and has better corrosion resistance and ductility than the graphite 130 copper guide sleeve 100. By providing a hard anode anodized layer, the hardness, wear resistance, high temperature resistance and corrosion resistance of at least the inner wall side of the guide sleeve 100 can be improved, so that the various performances of the guide sleeve 100 of the present application are not inferior to those of the guide sleeve 100 made of copper or steel;
[0062] 2. By providing a graphite installation groove 120 on the inner wall of the guide sleeve 100 and filling the groove with graphite 130, the lubricity of the inner wall of the guide sleeve 100 can be increased;
[0063] 3. Providing the Teflon coating 113 can further improve the wear resistance and lubricity of the guide sleeve 100 .
[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An aluminum alloy wear-resistant guide sleeve, characterized in that: It comprises a guide sleeve body, the inner wall of which is provided with a plurality of graphite installation grooves, and the graphite installation grooves are filled with graphite; The guide sleeve body comprises a cylindrical main body part made of 7 series aluminum alloy and an aluminum alloy hard anodized layer. The aluminum alloy hard anodized layer is arranged on the wall surface of the main body part and at least covers the inner wall of the main body part.
2. The aluminum alloy wear-resistant guide sleeve according to claim 1, characterized in that: The area of all the graphite installation grooves on the inner wall of the guide sleeve body accounts for 25-75%.
3. The aluminum alloy wear-resistant guide sleeve according to claim 1, characterized in that: A plurality of graphite installation grooves are evenly distributed on the inner wall.
4. The aluminum alloy wear-resistant guide sleeve according to claim 3, characterized in that: Each of the graphite installation grooves is annular, strip-shaped or spiral-shaped.
5. The aluminum alloy wear-resistant guide bushing according to any one of claims 1 to 4, characterized in that: The depth of each graphite installation groove is 0.4-0.6 mm; And / or, the width of each of the graphite installation grooves is 8 to 10 mm.
6. The aluminum alloy wear-resistant guide sleeve according to claim 1, characterized in that: The width of the slot opening of each graphite installation slot is smaller than the width of the slot bottom.
7. The aluminum alloy wear-resistant guide sleeve according to claim 1, characterized in that: The guide sleeve body further comprises a Teflon coating, and the Teflon coating is arranged on a side of the aluminum alloy hard anodized layer away from the main body portion.
8. The aluminum alloy wear-resistant guide sleeve according to claim 1, characterized in that: The thickness of the aluminum alloy wear-resistant guide sleeve is 2 to 10 mm; And / or, the inner diameter of the aluminum alloy wear-resistant guide sleeve is 4-40 mm, the outer diameter is 8-50 mm, and the length is 5-50 mm.
9. The aluminum alloy wear-resistant guide sleeve according to claim 1, characterized in that: The thickness of the aluminum alloy hard anodized layer is 40-60 μm.
10. A mold, characterized in that: It comprises the aluminum alloy wear-resistant guide sleeve as described in any one of claims 1 to 9.