Composite multilayer polishing pad

Abstract

The utility model discloses a composite multi-layer polishing pad which comprises a pad outer layer arranged on the upper surface of a pad main body layer, a plurality of rectangular grooves formed in the surface of the pad outer layer, a protective cover and an edge buffer layer, the pad main body layer is made of silicon carbide, and the protective cover comprises an edge buffer layer, air holes and a mounting rod. The edge buffer layer is attached to the outer surface of the gasket body layer, the edge buffer layer and the gasket outer layer are located on the same horizontal plane, a plurality of air holes are formed in the surface of the protection cover, the bottom face of the protection cover is fixedly connected with an installation rod, and the air holes are located in the two sides of the installation rod respectively. The stability and durability of the whole structure of the polishing pad are enhanced, the service life of the polishing pad can be effectively prolonged, the consumable replacement cost is reduced, the contact force between the edge of a product and the polishing pad during polishing is relieved, and scratches are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing pads, in particular to a composite multi-layer polishing pad. Background Art

[0002] A polishing pad is a tool used to clean, polish and trim the surfaces of metals, plastics, etc. It is also called polishing leather, polishing cloth, and polishing sheet. It is an important auxiliary material that determines the surface quality in chemical mechanical polishing. The polishing pad, in combination with the polishing machine, performs fine grinding and polishing on the surface of the workpiece to be polished. When the polishing pad is in use, the polishing liquid needs to be evenly delivered to different areas of the polishing pad, and then the polishing pad body contacts the workpiece for polishing and grinding operations.

[0003] However, the polishing area of ​​the polishing pad in the prior art is usually single-sided. After such polishing pad has been used for a period of time, the abrasive on its polishing surface is worn out, making it difficult to continue polishing and grinding, so the polishing pad needs to be replaced. Its service life is short, and the outer grinding layer of the existing polishing pad mostly adopts a mesh surface, the edge of which is not round enough, which may cause scratches on the edge of the workpiece during use. Therefore, there may be safety hazards such as the polishing pad may break or fall off when running at high speed, which will lead to uneven product surface and substandard quality. Therefore, in order to further improve the durability and practicality of the polishing pad, we propose a composite multi-layer polishing pad to solve the above problems. Utility Model Content

[0004] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art and to provide a composite multi-layer polishing pad, which is connected to the overall structure of the polishing pad through a protective cover and is connected to the outer surface of the outer layer of the pad by an edge buffer layer. This not only enhances the stability and durability of the overall structure of the polishing pad, effectively extends the service life of the polishing pad, reduces the cost of replacing consumables, but also reduces the contact force between the edge of the product and the polishing pad during polishing, enables the outer layer of the pad to transition more smoothly to the edge of the product, avoids the generation of scratches, and thus improves the surface finish and quality of the workpiece after polishing.

[0005] The utility model also provides the above-mentioned composite multi-layer polishing pad, comprising: a gasket main body layer, a gasket outer layer is provided on the upper surface of the gasket main body layer, a surface of the gasket outer layer is provided with a plurality of rectangular grooves, the material of the gasket main body layer is silicon carbide, a protective cover, the protective cover comprises an edge buffer layer, air holes, and a mounting rod, the edge buffer layer is in contact with the outer surface of the gasket main body layer, the edge buffer layer and the gasket outer layer are in the same horizontal plane, a plurality of air holes are provided on the surface of the protective cover, the bottom surface of the protective cover is fixedly connected to the mounting rod, and the plurality of air holes are respectively located on both sides of the mounting rod.

[0006] According to the composite multi-layer polishing pad of the utility model, the bottom surface of the main layer of the pad is fixedly connected to the adhesive layer, and the bottom surface of the adhesive layer is fixedly connected to the wear-resistant layer, which is used to connect the multiple layers of materials together to provide good wear resistance and polishing performance.

[0007] According to the composite multi-layer polishing pad of the utility model, the bottom surface of the wear-resistant layer is fixedly connected to the buffer layer via an adhesive layer, and the bottom surface of the buffer layer is fixedly connected to the support layer via an adhesive layer, thereby achieving a buffering and shock-absorbing effect, providing good support force, and ensuring the stability of the overall structure.

[0008] According to the composite multi-layer polishing pad of the present invention, the wear-resistant layer is made of polyester fiber, and the buffer layer is made of sponge, which is used to improve polishing efficiency and smoothness, and to reduce vibration and cushion the overall structure.

[0009] According to the composite multi-layer polishing pad of the present invention, a fixing ring is fixedly connected to the outer surface of the buffer layer, and the fixing ring is made of rubber, which is used to enhance the stability of the buffer layer.

[0010] According to the composite multi-layer polishing pad described in the utility model, the support layer is made of PP plastic, and the bottom surface of the support layer is fixedly connected to the water-absorbing layer via an adhesive layer. The bottom surface of the water-absorbing layer is connected to the inner bottom surface of the protective cover. This improves the wear resistance and service life of the polishing pad as a whole, and absorbs heat and liquid generated during polishing.

[0011] According to the composite multi-layer polishing pad of the present invention, the water-absorbing layer is made of cotton wool, and the thickness of the water-absorbing layer is greater than that of the supporting layer, so as to support the water absorption during the entire polishing process without affecting the function of the overall structure.

[0012] Beneficial effects: By connecting the protective cover to the overall structure of the polishing pad and utilizing the edge buffer layer to connect to the outer surface of the outer layer of the pad, not only the stability and durability of the overall structure of the polishing pad are enhanced, the service life of the polishing pad can be effectively extended, the cost of replacing consumables is reduced, and the contact force between the edge of the product and the polishing pad during polishing is reduced, so that the outer layer of the pad can transition more smoothly to the edge of the product, avoiding the generation of scratches, thereby improving the surface finish and quality of the workpiece after polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is the overall structure diagram of the composite multi-layer polishing pad of the utility model;

[0015] Figure 2 This is a diagram of the internal structure of the composite multi-layer polishing pad of the utility model;

[0016] Figure 3 This is an exploded view of the internal structure of the composite multi-layer polishing pad of the utility model;

[0017] Figure 4 This is a structural diagram of the composite multi-layer polishing pad protective cover of the utility model;

[0018] Figure 5 This is a composite multi-layer polishing pad of the utility model Figure 3 Enlarged view of point A in the middle.

[0019] Legend:

[0020] 1. Gasket main layer; 101. Gasket outer layer; 2. Wear-resistant layer; 3. Buffer layer; 301. Fixed ring; 4. Support layer; 5. Adhesive layer; 6. Water-absorbing layer; 7. Protective cover; 701. Edge buffer layer; 702. Air vent; 703. Mounting rod. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0022] Reference Figure 1-5 The present invention provides a composite multi-layer polishing pad, comprising:

[0023] The gasket main layer 1 is used to play the main polishing role. The upper surface of the gasket main layer 1 is provided with a gasket outer layer 101, which is used to polish the material. The surface of the gasket outer layer 101 is provided with a number of rectangular grooves, which effectively absorb and store the heat and abrasive particles generated during the polishing process, and facilitate the circulation of gas during the polishing process. The material of the gasket main layer 1 is silicon carbide, which is used to provide grinding and polishing functions, thereby improving the polishing efficiency and making the polished surface of the material smoother. The protective cover 7 is used to enhance the durability of the overall structure. The protective cover 7 includes an edge buffer layer 701, air holes 702, and a mounting rod 703, which are used to form an overall protective cover 7 and reduce the contact force between the edge of the product and the polishing pad during polishing to avoid scratches. The edge buffer layer 701 is in contact with the outer surface of the gasket main layer 1 to reduce the wear on the edge of the product due to the sharp edge of the gasket outer layer 101. The edge buffer layer 701 and the gasket outer layer 101 are on the same horizontal plane to ensure the flatness of the product surface. A number of air holes 702 are provided on the surface of the protective cover 7 to reduce the pressure in the water absorption layer 6. The bottom surface of the protective cover 7 is fixedly connected to a mounting rod 703 for connection to the polishing machine. A number of air holes 702 are located on both sides of the mounting rod 703.

[0024] The bottom surface of the gasket main body layer 1 is fixedly connected with an adhesive layer 5, and the bottom surface of the adhesive layer 5 is fixedly connected with a wear-resistant layer 2, which is used to connect the multiple layers of materials together and provide good wear resistance and polishing function, thereby improving the durability of the polishing pad. The bottom surface of the wear-resistant layer 2 is fixedly connected with a buffer layer 3 through the adhesive layer 5, which is used to have a buffering and shock-absorbing effect. The bottom surface of the buffer layer 3 is fixedly connected with a support layer 4 through the adhesive layer, and provides good support force for the overall structure and ensures the stability of the overall structure. The material of the wear-resistant layer 2 is polyester fiber, and the material of the buffer layer 3 is sponge, which is used to improve polishing efficiency and flatness, and to provide the overall structure with a buffering and vibration-reducing effect, and also takes into account polishing. The pad has wear resistance and flexibility. The outer surface of the buffer layer 3 is fixedly connected with a fixing ring 301. The material of the fixing ring 301 is rubber, which is used to enhance the stability of the buffer layer 3 to avoid durability due to the soft material. The material of the supporting layer 4 is PP plastic. The bottom surface of the supporting layer 4 is fixedly connected with a water-absorbing layer 6 through an adhesive layer 5. The bottom surface of the water-absorbing layer 6 is connected to the inner bottom surface of the protective cover 7, which is used to improve the wear resistance and service life of the polishing pad of the overall structure, and absorb the heat and liquid generated during polishing. The material of the water-absorbing layer 6 is cotton wool. The thickness of the water-absorbing layer 6 is greater than that of the supporting layer 4, which is used to support the water absorption during the entire polishing process without affecting the function of the overall structure.

[0025] Working principle: When using the composite multi-layer polishing pad, the pad main layer 1, wear-resistant layer 2, buffer layer 3, support layer 4 and water-absorbing layer 6 are connected respectively through the adhesive layer 5 to provide a composite multi-layer structure, and the different soft and hard materials are used to ensure that the overall structure of the polishing pad can take into account both wear resistance and flexibility. The protective cover 7 is put on the overall structure of the polishing pad, the air vent 702 is in contact with the water-absorbing layer 6, and the outer surface of the pad outer layer 101 is in contact with the edge buffer layer 701, which can make the pad outer layer 101 transition to the edge of the product more smoothly. The mounting rod 703 is connected to the polishing machine and it can be used.

[0026] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A composite multi-layer polishing pad, characterized in that: include: A gasket main layer (1), wherein a gasket outer layer (101) is provided on the upper surface of the gasket main layer (1), a plurality of rectangular grooves are provided on the surface of the gasket outer layer (101), and the material of the gasket main layer (1) is silicon carbide; A protective cover (7), the protective cover (7) comprising an edge buffer layer (701), ventilation holes (702), and a mounting rod (703); the edge buffer layer (701) is in contact with the outer surface of the gasket main body layer (1); the edge buffer layer (701) and the gasket outer layer (101) are located on the same horizontal plane; a plurality of ventilation holes (702) are provided on the surface of the protective cover (7); the bottom surface of the protective cover (7) is fixedly connected to the mounting rod (703); and the plurality of ventilation holes (702) are respectively located on both sides of the mounting rod (703).

2. A composite multi-layer polishing pad according to claim 1, characterized in that The bottom surface of the gasket main body layer (1) is fixedly connected to an adhesive layer (5), and the bottom surface of the adhesive layer (5) is fixedly connected to a wear-resistant layer (2).

3. The composite multi-layer polishing pad according to claim 2, characterized in that: The bottom surface of the wear-resistant layer (2) is fixedly connected to the buffer layer (3) via an adhesive layer (5), and the bottom surface of the buffer layer (3) is fixedly connected to the support layer (4) via an adhesive layer.

4. The composite multi-layer polishing pad according to claim 3, characterized in that: The material of the wear-resistant layer (2) is polyester fiber, and the material of the buffer layer (3) is sponge.

5. The composite multi-layer polishing pad according to claim 3, characterized in that: A fixing ring (301) is fixedly connected to the outer surface of the buffer layer (3), and the fixing ring (301) is made of rubber.

6. The composite multi-layer polishing pad according to claim 3, characterized in that: The support layer (4) is made of PP plastic, and the bottom surface of the support layer (4) is fixedly connected to a water-absorbing layer (6) via an adhesive layer (5), and the bottom surface of the water-absorbing layer (6) is connected to the inner bottom surface of the protective cover (7).

7. The composite multi-layer polishing pad according to claim 6, characterized in that: The material of the water-absorbing layer (6) is cotton wool, and the thickness of the water-absorbing layer (6) is greater than the thickness of the supporting layer (4).

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