High-connection-strength type diamond dry grinding disc

Abstract

The utility model provides a high-connection-strength type diamond dry grinding disc, relates to the technical field of grinding machining, and solves the technical problems that a common diamond dry grinding disc is low in consolidation connection strength, and a working layer is easy to fall off from a base layer. The high-connection-strength type diamond dry grinding disc comprises a base layer and a working layer used for grinding, the base layer is of a net-shaped structure with holes, the interiors of the holes of the net-shaped structure and the surface of the net-shaped structure are coated with resin bonding parts, and the working layer is bonded and solidified to one side of the base layer through the resin bonding parts; according to the high-connection-strength type diamond dry grinding disc, in the consolidation forming process, the working layer material permeates and is consolidated in the net-shaped structure and on the surface of the base layer, a composite connection structure is formed, the connection mode that a working layer of a common diamond dry grinding disc is consolidated on the surface of cotton cloth is changed, and the bonding strength of the working layer and the base layer is improved; and the working layer of the high-connection-strength type diamond dry grinding disc is not easy to fall off.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding processing, in particular to a high connection strength diamond dry grinding disc. Background Art

[0002] In actual production and life, many scenes and materials require the use of diamond dry grinding discs for grinding. Specifically, the material is ground through the working layer of the diamond dry grinding disc.

[0003] Currently on the market, the base layer material of ordinary diamond dry grinding discs is cotton cloth, and the working layer material of the diamond dry grinding disc can only be solidified on the surface of the cotton cloth.

[0004] The applicant has found that the prior art has at least the following technical problems: In the prior art, the bonding strength of the diamond dry grinding pad is low, so during the use of the diamond dry grinding pad, the diamond working layer can easily fall off from the base layer, thereby causing the diamond dry grinding pad to be scrapped, and the fallen diamond working layer can even cause personal injury to the operator. Utility Model Content

[0005] The purpose of the utility model is to provide a high connection strength diamond dry grinding disc to solve the technical problems in the prior art that the diamond dry grinding disc has low consolidation connection strength and the working layer is easy to fall off from the base layer; the many technical effects that can be produced by the preferred technical scheme among the many technical schemes provided by the utility model are described in detail below.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The high connection strength diamond dry grinding disc provided by the utility model comprises a base layer and a working layer for grinding, wherein:

[0008] The base layer is a mesh structure with holes, and the inside of the holes of the mesh structure and the surface of the mesh structure are coated with a resin bonding part, and the resin bonding part adheres and fixes the working layer to one side of the base layer.

[0009] Preferably, the material of the resin bonding portion is consistent with the material of the working layer.

[0010] Preferably, the high connection strength diamond dry grinding disc further comprises a connection layer, and the connection layer is fixed to a side of the base layer away from the working layer for detachable connection with a grinding device.

[0011] Preferably, the connecting layer comprises one or more of nylon hook and loop fastener, polyester hook and loop fastener, and polyester and nylon blended hook and loop fastener, and the connecting layer is bonded and fixed to the base layer.

[0012] Preferably, the thickness of the connecting layer is 0.05-5 mm.

[0013] Preferably, the thickness of the working layer is 0.5-8 mm.

[0014] Preferably, the thickness of the base layer is 0.05-5 mm.

[0015] Preferably, the number of the base layers is 1 or 2, and the base layers of adjacent layers are made of the same or different materials.

[0016] Preferably, the mesh structure is made of one or more of an iron mesh structure, a stainless steel mesh structure, a copper mesh structure, a glass fiber mesh, a nylon mesh, and a polyester mesh.

[0017] Preferably, the mesh size of the mesh structure is 10-400 meshes.

[0018] Compared with the prior art, the high connection strength diamond dry grinding disc provided by the utility model has the following beneficial effects: the working layer and the base layer are connected to form an integrated structure through a resin bonding portion; the resin bonding portion containing diamonds is solidified inside and on the surface of the mesh structure holes of the base layer; during the consolidation and molding process of the high connection strength diamond dry grinding disc, the working layer material penetrates and solidifies inside and on the surface of the mesh structure of the base layer to form a composite connection structure, which changes the connection mode of the working layer of the ordinary diamond dry grinding disc being solidified on the cotton cloth surface, improves the bonding strength between the working layer and the base layer, and makes the working layer of the high connection strength diamond dry grinding disc not easy to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the cross-sectional structure of a high connection strength diamond dry grinding disc;

[0021] Figure 2 This is a schematic diagram of the external structure of a high connection strength diamond dry grinding disc;

[0022] Figure 3 It is a schematic diagram of the planar structure of the basal layer.

[0023] In the figure, 1 is the working layer; 2 is the base layer; 3 is the connecting layer. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0026] 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.

[0027] At present, the base layer material of ordinary diamond dry grinding discs on the market is cotton cloth, and the working layer material of the diamond dry grinding disc can only be fixed on the surface of the cotton cloth. In the prior art, the fixing connection strength of the diamond dry grinding disc is low, so during the use of the diamond dry grinding disc, the diamond working layer is easy to fall off from the base layer, which leads to the scrapping of the diamond dry grinding disc, and even the falling diamond working layer may cause personal injury to the operator.

[0028] In view of the above problems, the embodiment of the utility model provides a high connection strength diamond dry grinding disc, which improves the bonding strength between the working layer 1 and the base layer 2, so that the working layer 1 of the high connection strength diamond dry grinding disc is not easy to fall off.

[0029] Combine the following Figure 1-Figure 3 The technical solution provided by the utility model is described in more detail.

[0030] The high connection strength diamond dry grinding disc provided by the utility model comprises a working layer 1, a base layer 2 and a connection layer 3 stacked in sequence; wherein the working layer 1 and the base layer 2 are connected by a resin bonding part containing diamonds. The resin bonding part containing diamonds is made of the same material as the working layer 1; and the base layer 2 is a mesh structure.

[0031] In this embodiment, unless otherwise specified, the materials and equipment used are commercially available products in the art.

[0032] In this embodiment, the thickness of the working layer 1 is preferably 0.5-8 mm, more preferably 1-6 mm, and even more preferably 3 mm.

[0033] In this embodiment, the working layer 1 is a diamond-containing working layer 1, and its raw materials are preferably the following components by weight: 40 parts of a binder, 40 parts of diamonds, and 20 parts of a filler. In specific implementation, construction personnel can select any component of the working layer 1.

[0034] Preferably, the binder is a mixture of polycarbonate and phenolic resin in a mass ratio of 1:1. Polycarbonate can improve the toughness of the binder and make the binder have good impact resistance. During the consolidation molding process, the phenolic resin solidifies to form a diamond working layer 1 of fixed size and shape according to the size and shape of the mold used, disperses and holds the diamond, supports the diamond to work, and can wear synchronously with the diamond.

[0035] Preferably, the particle size of the diamond is 100 mesh. Diamond is the main grinding material of the working layer 1, and the grinding process is performed by diamond.

[0036] Preferably, the filler is a mixture of aluminum oxide and silicon carbide in a mass ratio of 1:1. Aluminum oxide is a filling material of the working layer 1, which improves the hardness and strength of the working layer 1. Silicon carbide is an auxiliary abrasive of the working layer 1, which has a certain grinding ability, can assist diamond in grinding, and improve the hardness and strength of the working layer 1.

[0037] In this embodiment, the thickness of the base layer 2 is preferably 0.05-5 mm, more preferably 0.1-1 mm, and even more preferably 0.3-0.4 mm.

[0038] In this embodiment, the mesh structure preferably includes one or more of an iron mesh structure, a stainless steel mesh structure, a copper mesh structure, a glass fiber mesh, a nylon mesh, and a polyester mesh, and is more preferably a nylon mesh.

[0039] In this embodiment, the mesh size of the mesh structure is preferably 10-400 meshes, more preferably 20-100 meshes, and even more preferably 40-60 meshes.

[0040] The present embodiment has no special limitation on the size and shape of the base layer 2 , and commercially available products known to those skilled in the art may be used or different sizes and shapes may be customized according to market demand.

[0041] The present embodiment has no particular limitation on the source of the raw material of the base layer 2 , and commercially available products known to those skilled in the art may be used.

[0042] In this embodiment, the number of the base layer 2 is preferably 1-2. When the number of the base layer 2 is preferably 2, this embodiment has no particular limitation on the material, size and shape of the two base layers 2, and they may be the same or different.

[0043] In this embodiment, the thickness of the connection layer 3 is preferably 0.05-5 mm, more preferably 1 mm.

[0044] In this embodiment, the material of the connecting layer 3 preferably includes one or more of nylon hook and loop fastener, polyester hook and loop fastener, and polyester and nylon blended hook and loop fastener, and nylon hook and loop fastener is more preferred.

[0045] The present embodiment has no special limitation on the size of the high connection strength diamond dry grinding disc, and the product size can be changed according to the change of the size of the mold used. The present embodiment has no special limitation on the appearance of the high connection strength diamond dry grinding disc, and it can be designed into different shapes according to market demand, such as a circle, annular ring or N-gon (N is an integer greater than 2).

[0046] The high connection strength diamond dry grinding disc of the present embodiment has a working layer and a base layer connected as an integral structure by a resin bonding portion; the resin bonding portion containing diamonds is solidified inside and on the surface of the mesh structure holes of the base layer; during the consolidation and molding process of the high connection strength diamond dry grinding disc, the working layer material penetrates and solidifies inside and on the surface of the mesh structure of the base layer to form a composite connection structure, which changes the connection mode of the working layer of the ordinary diamond dry grinding disc being solidified on the cotton cloth surface, improves the bonding strength between the working layer and the base layer, and makes the working layer of the high connection strength diamond dry grinding disc not easy to fall off.

[0047] In order to further illustrate the present embodiment, the high connection strength diamond dry grinding disc provided by the present embodiment is described in detail below in combination with the accompanying drawings and embodiments, but they should not be understood as limiting the protection scope of the present embodiment.

[0048] Figure 1 It is a schematic diagram of the cross-sectional structure of a high connection strength type diamond dry grinding disc, which includes a working layer 1, a base layer 2 and a connection layer 3 stacked in sequence. The high connection strength type diamond dry grinding disc is a ring-shaped structure, and the middle part is hollow after being punched by a mold.

[0049] The materials of the working layer 1 in the embodiment are all made of materials that are uniformly mixed according to the following proportions, including the following components (parts by mass):

[0050] Binder: 40 parts, including 20 parts of polycarbonate and 20 parts of phenolic resin;

[0051] Diamond: 40 parts, particle size is 100 mesh;

[0052] Filling material: 20 parts, including 10 parts of aluminum oxide and 10 parts of silicon carbide.

[0053] The working layers 1 in the embodiments are all of the same structure with a diameter of 100 mm and a thickness of 3 mm, and different base layers 2 basically do not affect the thickness of the working layer 1 .

[0054] Example 1

[0055] (1) Place a 0.7 mm thick 10-mesh iron mesh structure in the mold and assemble the mold.

[0056] (2) Fill 25 g of working layer 1 material into the mold assembled in step (1), and then place the mold in an oven at 110° C. for 3 hours to solidify and mold.

[0057] (3) The mold that has been consolidated and formed in step (2) is disassembled, and the semi-finished high-connection-strength diamond dry grinding disc is taken out. At room temperature of 25° C., the semi-finished high-connection-strength diamond dry grinding disc is bonded together with a layer of 1 mm thick nylon Velcro (connection layer 3) by using 4 g of PUR glue.

[0058] (4) trimming the periphery and center hole of the semi-finished product obtained in step (3) by die punching to obtain a finished product of a high connection strength diamond dry grinding disc.

[0059] Example 2

[0060] The difference between Example 2 and Example 1 is that the base layer 2 of Example 2 is a 0.5 mm thick 20-mesh iron mesh structure.

[0061] Example 3

[0062] The difference between Example 3 and Example 1 is that the base layer 2 of Example 3 is a 0.4 mm thick 40-mesh iron mesh structure.

[0063] Example 4

[0064] The difference between Example 4 and Example 1 is that the base layer 2 of Example 4 is a 60-mesh iron mesh structure with a thickness of 0.3 mm.

[0065] Example 5

[0066] The difference between Example 5 and Example 1 is that the base layer 2 of Example 5 is a 0.2 mm thick 100-mesh iron mesh structure.

[0067] Example 6

[0068] The difference between Example 6 and Example 1 is that the base layer 2 of Example 6 is a 0.08 mm thick 400 mesh iron mesh structure.

[0069] Comparative Example 1

[0070] The difference between Comparative Example 1 and Example 1 is that the base layer 2 of Comparative Example 1 is 0.6 mm thick cotton cloth.

[0071] Performance Testing

[0072] The high connection strength dry grinding discs of Examples 1-6 and the dry grinding discs of Comparative Example 1 were used to perform dry grinding tests on marble beige materials. The specific test method was as follows: the surface of a marble beige material was divided into 7 areas of equal area, and then the same angle grinder was sequentially installed with Examples 1-6 and Comparative Example 1, and only one of the 7 areas on the surface of the marble beige material was dry ground, and strong grinding was performed, and the grinding time was ensured to be the same. After completion, the diamond working layer 1 on the surface of Examples 1-6 and Comparative Example 1 was observed with the naked eye to see if it had fallen off, and the number of particles that fell off the diamond working layer 1 was recorded.

[0073] Table 1 Dry grinding test results of each group of embodiments and comparative examples

[0074]

[0075]

[0076] It can be seen from the above embodiments and comparative examples that after the dry grinding test of the high connection strength diamond dry grinding sheet provided in this embodiment, the high connection strength diamond dry grinding sheet product has high connection strength and the diamond working layer 1 does not fall off.

[0077] In the description of this specification, specific features, structures or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means 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 utility model. 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0079] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A high connection strength diamond dry grinding disc, characterized in that: It includes a base layer and a working layer for grinding, wherein: The base layer is a mesh structure with holes, and the inside of the holes of the mesh structure and the surface of the mesh structure are coated with a resin bonding part, and the resin bonding part adheres and fixes the working layer to one side of the base layer.

2. The high connection strength diamond dry grinding disc according to claim 1, characterized in that: The material of the resin bonding portion is consistent with the material of the working layer.

3. The high connection strength diamond dry grinding disc according to claim 1, characterized in that: The high connection strength diamond dry grinding sheet further comprises a connection layer, which is fixed to a side of the base layer away from the working layer, and is used for detachable connection with a grinding device.

4. The high connection strength diamond dry grinding disc according to claim 3, characterized in that: The connecting layer includes one or more of nylon hook and loop fastener, polyester hook and loop fastener, and polyester and nylon blended hook and loop fastener, and the connecting layer is bonded and fixed to the base layer.

5. The high connection strength diamond dry grinding disc according to claim 3, characterized in that: The thickness of the connecting layer is 0.05-5 mm.

6. The high connection strength diamond dry grinding disc according to claim 1, characterized in that: The thickness of the working layer is 0.5-8 mm.

7. The high connection strength diamond dry grinding disc according to claim 1, characterized in that: The thickness of the base layer is 0.05-5 mm.

8. The high connection strength diamond dry grinding disc according to claim 1, characterized in that: The number of the base layers is 1 or 2, and the base layers of adjacent layers are made of the same or different materials.

9. The high connection strength diamond dry grinding disc according to claim 1, characterized in that: The mesh structure is made of one or more of an iron mesh structure, a stainless steel mesh structure, a copper mesh structure, a glass fiber mesh, a nylon mesh, and a polyester mesh.

10. The high connection strength diamond dry grinding disc according to claim 1, characterized in that: The mesh number of the mesh structure is 10-400 meshes.

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