Soft and hard matrix composite dry and wet dual-purpose abrasive disc

Abstract

The invention relates to the field of abrasive discs, and particularly discloses a soft and hard matrix composite type wet and dry abrasive disc. The grinding block composed of the outer soft wrapping layer and the inner hard grinding block is arranged on the substrate, and when the grinding block is used for grinding, the outer soft wrapping layer can serve as a buffer barrier between the terrace and the inner hard grinding block, so that the inner hard grinding block is prevented from leaving deep scratches on the ground; meanwhile, the inner hard grinding block can also serve as a hard core of the outer soft wrapping layer, excessive deformation of the outer soft wrapping layer is avoided, abrasion of the outer soft wrapping layer is reduced, the service life of the outer soft wrapping layer is prolonged, and due to the arrangement of the outer-soft-inner-hard grinding block structure, the service life of the outer soft wrapping layer is prolonged, and the service life of the outer soft wrapping layer is prolonged. And deeper grinding scratches can be prevented from being left on the ground, and the grinding machine can be suitable for grinding the ground made of different materials and has high practicability.

Description

Technical Field

[0001] The invention belongs to the technical field of abrasive discs, and in particular relates to a soft-hard matrix composite wet-dry dual-purpose abrasive disc. Background Art

[0002] Floor grinding pads are a type of grinding tool used in conjunction with floor grinders to grind floors made of different materials, such as concrete, emery, and stone. The floor grinder drives the grinding pads to rotate to level the floor. The operator can adjust the coarse and fine particle size of the grinding pads to achieve the entire process of leveling the floor to a smooth surface.

[0003] There are two main types of grinding discs commonly used in the industry on the market. One is a resin grinding disc formed by pressing and molding a mixture of resin binder and abrasive particles. The resin grinding disc has a soft texture and different degrees of sharpness. It is not easy to grind scratches on the ground, but also because of its soft texture, the grinding disc wears faster. The working life of common resin grinding discs with better texture is about one thousand square meters, and different resin grinding discs have different adaptability to different materials of ground and are easy to burn. The other is an alloy grinding disc formed by pressing and sintering a mixture of alloy powder and diamond particles. The texture of the alloy grinding disc is harder than that of the resin grinding disc, and the sharpness depends on the density of the ground. Although it is more wear-resistant, the hard alloy body is easy to grind deep scratches on the ground, and it is more troublesome to repeat the grinding steps many times to remove the scratches.

[0004] In summary, the two types of grinding discs currently in use on the market each have their own advantages and disadvantages, and neither is suitable for grinding floors of different materials and hardness. Operators need to select appropriate grinding discs based on the material, hardness and processing requirements of the floor to be ground, which places higher demands on the operator's experience and requires improvements to the grinding disc structure. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present invention aims to provide a soft and hard matrix composite wet and dry dual-purpose grinding disc to solve the problem that the existing grinding discs are not suitable for grinding floors of different hardnesses.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A soft and hard matrix composite wet and dry dual-purpose abrasive disc, comprising:

[0008] substrate;

[0009] The grinding block is mounted on the substrate and consists of an outer soft wrapping layer connected to the substrate and an inner hard grinding block. The hardness of the inner hard grinding block is greater than that of the outer soft wrapping layer.

[0010] Preferably, the outer soft wrapping layer and the inner hard grinding block are arranged in parallel on a side away from the substrate.

[0011] Preferably, the outer soft wrapping layer is formed by pressing resin abrasive, and the inner hard grinding block is an alloy diamond grinding block.

[0012] Preferably, the base sheet and the outer soft wrapping layer are integrally pressed and formed by resin abrasive.

[0013] Preferably, a reinforcement layer is connected to a side of the substrate away from the grinding block, and a Velcro cloth is connected to the reinforcement layer.

[0014] Preferably, a plurality of the grinding blocks are connected to the substrate in a circular array at equal intervals.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention arranges a grinding block consisting of an outer soft coating layer and an inner hard grinding block on a substrate. When the grinding block is used for grinding, the outer soft coating layer can act as a buffer barrier between the floor and the inner hard grinding block, avoiding the inner hard grinding block from leaving deep scratches on the ground. At the same time, the inner hard grinding block can also act as the hard core of the outer soft coating layer, avoiding excessive deformation of the outer soft coating layer, thereby reducing the wear of the outer soft coating layer and improving the life of the outer soft coating layer. This outer soft and inner hard grinding block structure not only improves the service life of the outer soft coating layer, but also avoids leaving deep grinding scratches on the ground. It can be applied to the grinding processing of floors of different materials and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of a soft and hard matrix composite wet and dry dual-purpose grinding disc disclosed in the present invention is schematically shown. Figure 1 ;

[0018] Figure 2 The overall structure of a soft and hard matrix composite wet and dry dual-purpose grinding disc disclosed in the present invention is schematically shown. Figure 2 ;

[0019] Figure 3 This is a schematic cross-sectional view of a soft-hard matrix composite wet-dry dual-purpose abrasive disc disclosed in the present invention;

[0020] In the figure: 1. Base sheet; 2. Outer soft wrapping layer; 3. Inner hard grinding block; 4. Reinforcement layer; 5. Velcro fabric. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example:

[0023] See also Figure 1 - Figure 3 As shown, a soft and hard matrix composite wet and dry dual-purpose abrasive disc comprises:

[0024] substrate 1;

[0025] The grinding block is mounted on the substrate 1 and consists of an outer soft wrapping layer 2 connected to the substrate 1 and an inner hard grinding block 3 . The hardness of the inner hard grinding block 3 is greater than that of the outer soft wrapping layer 2 .

[0026] By setting a grinding block consisting of an outer soft coating layer 2 and an inner hard grinding block 3 on the substrate 1, when using the grinding block for grinding, the outer soft coating layer 2 can act as a buffer barrier between the floor and the inner hard grinding block 3, avoiding the inner hard grinding block 3 from leaving deep scratches on the ground. At the same time, the inner hard grinding block 3 can also act as the hard core of the outer soft coating layer 2, avoiding excessive deformation of the outer soft coating layer 2, thereby reducing the wear of the outer soft coating layer 2 and improving the life of the outer soft coating layer 2. This kind of grinding block structure with a soft outer layer and a hard inner layer not only improves the service life of the outer soft coating layer 2, but also avoids leaving deep grinding scratches on the ground. It can be applied to the grinding processing of floors of different materials and has strong practicality.

[0027] When the grinding wheel consisting of the substrate 1 and the grinding block is installed on the grinding machine for rotational grinding, since the outer soft coating layer 2 forms a good coating on the inner hard grinding block 3, the outer soft coating layer 2 of the rotating grinding block is always located between the inner hard grinding block 3 and the floor and is in contact with the force, providing a grinding buffer space for the inner hard grinding block 3, thereby avoiding the rotating inner hard grinding block 3 from leaving scratches on the floor. The grinding block structure composed of the outer soft coating layer 2 and the inner hard grinding block 3 can be designed according to needs, and the arrangement of the grinding block structure on the substrate 1 can also be designed as needed. It is only necessary to wrap the soft grinding material in the rotating grinding wheel around the outside of the hard grinding material to act as a buffer for the contact between the hard grinding material and the floor.

[0028] The outer soft wrapping layer 2 and the inner hard grinding block 3 are arranged in parallel on a side away from the substrate 1. When the grinding wheel of this structure is used for floor grinding, the outer soft wrapping layer 2 will contact the ground before the inner hard grinding block 3. During the grinding process, the outer soft wrapping layer 2 with a softer texture will be squeezed between the inner hard grinding block 3 and the floor and deformed. While the floor is ground by the outer soft wrapping layer 2, the sharp corners of the inner hard grinding block 3 are prevented from directly contacting the floor, thereby avoiding the inner hard grinding block 3 from leaving deep scratches on the floor. At the same time, the inner hard grinding block 3 can act as the hard core of the outer soft wrapping layer 2, avoiding excessive deformation of the outer soft wrapping layer 2, thereby effectively reducing the loss of the outer soft wrapping layer 2 during the grinding process and extending the life of the outer soft wrapping layer 2.

[0029] In one embodiment, the outer soft wrapping layer 2 is pressed from resin abrasive and has a soft texture. The inner hard grinding block 3 is an alloy diamond grinding block and has a hard texture. Production personnel can change the manufacturing materials of the outer soft wrapping layer 2 and the inner hard grinding block 3 according to needs to adjust the hardness of the two. However, it is necessary to ensure that the outer soft wrapping layer 2 can be better wrapped around the outside of the inner hard grinding block 3 to avoid the sharp edges of the inner hard grinding block 3 causing deep scratches on the floor during the grinding process.

[0030] In order to enhance the connection stability between the outer soft wrapping layer 2 and the substrate 1 , the substrate 1 and the outer soft wrapping layer 2 are integrally pressed and formed by resin abrasive.

[0031] The side of the substrate 1 away from the grinding block is connected to a reinforcing layer 4. The reinforcing layer 4 can be made of cloth or other synthetic materials. The reinforcing layer 4 is mainly used to increase the strength and toughness of the substrate 1 to prevent the substrate 1 from breaking during use. The reinforcing layer 4 is connected to a Velcro cloth 5, which is mainly used to install the substrate 1 on the grinding machine.

[0032] In one embodiment, a plurality of the grinding blocks are equidistantly connected to the substrate 1 in a circular array, and the user can also freely adjust the distribution position of the grinding blocks on the substrate 1 according to usage requirements, and the grinding effect of the grinding sheet can be optimized by the distribution of different grinding blocks.

[0033] The grinding disc of the present invention can be produced by the following steps:

[0034] Select high-quality alloy diamond grinding blocks with appropriate size and diamond particle size according to the use requirements;

[0035] Mix the resin and abrasive according to a preset ratio to form a resin abrasive for use;

[0036] Arrange the diamond grinding blocks in order in a pressing mold, then pour the resin abrasive into the pressing mold in an appropriate amount, place cloth or synthetic materials on the surface of the leveled resin abrasive as a reinforcement layer 4, and press it into shape in a hot press to obtain an abrasive disc;

[0037] The Velcro cloth 5 is glued to the back of the grinding disc to obtain a soft and hard matrix composite wet and dry dual-purpose grinding disc.

[0038] The grinding area of ​​traditional resin grinding discs is about one thousand square meters, but they are prone to burning. The grinding area of ​​traditional alloy grinding discs is about five thousand square meters. Although their lifespan has been improved, they are prone to causing scratches on the ground. The present invention discloses a soft and hard matrix composite wet and dry dual-purpose grinding disc with a grinding life of about five thousand square meters and will not cause scratches on the ground during the grinding process. It has the excellent use effects of both resin grinding discs and alloy grinding discs and has broad prospects for use.

[0039] All standard parts used in the present invention can be purchased commercially, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. In addition, the circuit connections adopt conventional connection methods in the prior art and will not be described in detail here. Any matters not described in detail in this specification belong to the prior art known to professionals in this field.

[0040] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined.

[0041] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0043] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0044] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

Claims

1. A soft and hard matrix composite wet and dry dual-purpose abrasive disc, characterized in that: include: substrate (1); The grinding block is mounted on the substrate (1) and consists of an outer soft wrapping layer (2) connected to the substrate (1) and an inner hard grinding block (3), wherein the hardness of the inner hard grinding block (3) is greater than the hardness of the outer soft wrapping layer (2).

2. The soft-hard matrix composite wet-dry dual-purpose abrasive disc according to claim 1, characterized in that: The outer soft wrapping layer (2) and the inner hard grinding block (3) are arranged in parallel on a side away from the substrate (1).

3. The soft-hard matrix composite wet-dry dual-purpose abrasive disc according to claim 1, characterized in that: The outer soft wrapping layer (2) is formed by pressing resin abrasive, and the inner hard grinding block (3) is an alloy diamond grinding block.

4. The soft-hard matrix composite wet-dry dual-purpose abrasive disc according to claim 1, characterized in that: The base sheet (1) and the outer soft wrapping layer (2) are integrally pressed and formed by resin abrasive.

5. The soft-hard matrix composite wet-dry dual-purpose abrasive disc according to claim 1, characterized in that: A reinforcement layer (4) is connected to the side of the base plate (1) away from the grinding block, and a Velcro cloth (5) is connected to the reinforcement layer (4).

6. The soft-hard matrix composite wet-dry dual-purpose abrasive disc according to claim 1, characterized in that: A plurality of grinding blocks are connected to the substrate (1) in a circular array at equal intervals.

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