Double-layer abrasive disc with pits
Through the double-layer grinding sheet with pit design, the cemented carbide tooth surface layer and the steel back surface layer are connected by brazing or adhesive, which solves the problems of insufficient wear resistance and poor connection stability of traditional grinding sheets, achieving longer Lifespan and lower cost.
Patent Information
- Application Number
- CN202420232385.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-01-31
AI Technical Summary
Traditional wear sheets have insufficient wear resistance, complex connection structure and high accuracy requirements, resulting in high maintenance and production costs, and poor connection stability and impact resistance.
The double-layer grinding sheet design is adopted with pits. The cemented carbide tooth surface layer and the steel back layer are connected by brazing or adhesive connecting layer. The connecting layer is attached to the pit, simplifying the structure, reducing the accuracy requirements, and through pit design Enhance connection stability and impact resistance.
Significantly improve the wear resistance and service life of the grinding sheet, reduce maintenance and production costs, enhance connection stability and impact resistance, and simplify the production process.
Smart Images
Figure CN222219750U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grinding, in particular to a double-layer grinding disc with pits. Background Art
[0002] Grinding machines are widely used in pulp and paper, density board production, pharmaceuticals, papermaking tobacco flakes, food, feed, metal powder, rubber, plastic, new material production and other industries. Materials are usually separated and ground through the gap between a pair of grinding discs installed in the grinder and rotating relatively. Traditional grinding discs have average wear resistance and service life, and need to be replaced frequently. Moreover, since grinding discs are generally integral, the entire grinding disc needs to be replaced when replacing it, which not only increases the maintenance cost, but also causes serious waste of resources.
[0003] At present, in response to the above problems, some manufacturers have developed double-layer grinding discs, such as patent application CN215714248U, a combined grinding disc for a pulping machine, etc., which can be divided into a grinding disc with a tooth surface layer with a rack and a circular back layer, and the tooth surface layer is connected to the back layer with bolts or double dovetail pins, thereby avoiding the replacement of the entire grinding disc to a certain extent, reducing maintenance costs, saving resources, and reducing production costs to a certain extent by selecting different materials for the tooth surface layer and the back layer.
[0004] However, the prior art still has the problem of insufficient wear resistance, which affects the service life of the grinding disc, resulting in limited reduction in maintenance costs. At the same time, the bolts or double dovetail pins used for connection in the prior art are very likely to loosen due to long-term use of the grinding disc, resulting in average stability and reliability of the connection between the tooth surface layer and the back surface layer, and average overall impact resistance, which further affects the service life and even maintenance costs of the grinding disc. In addition, when bolts or double dovetail pins are used for connection in the prior art, the structure is complex, and the matching accuracy of the bolts or double dovetail pins and even the overall processing accuracy requirements are relatively high, which still limits the reduction in production costs.
[0005] Therefore, a new technical solution is needed to solve the above technical problems. Utility Model Content
[0006] The purpose of the utility model is to provide a double-layer grinding disc with pits to solve the technical problems that the prior art proposed in the above background technology has a complex structure, high processing precision requirements, and insufficient wear resistance, so that the reduction of maintenance costs and production costs is still limited, and the stability and reliability of the connection between the tooth surface layer and the back layer in the prior art are general, and the overall impact resistance is also general, which further affects the service life of the grinding disc and even the maintenance cost.
[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0008] A double-layer grinding disc with pits comprises a back layer, a soft connecting layer, and a tooth surface layer of cemented carbide, wherein the tooth surface layer and the back layer are connected together by the connecting layer, and pits are distributed on the opposite sides of the tooth surface layer and the back layer, and there are multiple pits distributed on the tooth surface layer and the back layer respectively, the connecting layer is simultaneously attached to the pits and is a brazing connecting layer or an adhesive connecting layer, the back layer is a steel layer, and the tooth surface layer and the back layer are both matched with the connecting layer reverse draft die.
[0009] Furthermore, the tooth surface layer and the back surface layer are both a circular integral structure, or are both circular structures formed by multiple fan-shaped structures, or the tooth surface layer is a circular structure formed by multiple fan-shaped structures, and the back surface layer is a circular integral structure.
[0010] Furthermore, each of the pits includes an opening, a pit bottom, and a side wall portion formed between the opening and the pit bottom, the area of the opening is smaller than the area of the pit bottom, and the longitudinal section of the pit is a trapezoidal structure, a conical structure, or a cylindrical structure.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. The utility model is provided with a back layer, and through the matching setting of the tooth surface layer of cemented carbide, the wear resistance of the grinding disc is greatly improved by utilizing the characteristics of cemented carbide, thereby effectively extending the service life of the grinding disc and greatly reducing the maintenance cost. At the same time, the utility model utilizes a connecting layer to connect the tooth surface layer and the back surface layer together, and pits are distributed on the opposite sides of the tooth surface layer and the back surface layer. The connecting layer is simultaneously attached to the matching setting in the pits, which eliminates the use of bolts and double dovetail pins, thereby effectively simplifying the overall structure, reducing the overall processing accuracy requirements, and reducing the overall production cost. At the same time, the stability and reliability of the connection between the tooth surface layer and the back surface layer are greatly improved, that is, the connecting layer is soft, so that the connecting layer has good buffering performance, which can effectively weaken the impact force on the tooth surface layer, and the connecting layer is attached to the pits to form a plurality of connecting mortise and tenon joints between the tooth surface layer and the back surface layer. The above-mentioned setting also greatly improves the overall impact resistance, so that the grinding disc has better impact resistance, and finally further extends the service life of the grinding disc and reduces the maintenance cost.
[0013] 2. In the utility model, the connection layer is a brazing connection layer or an adhesive connection layer, so that the tooth surface layer and the back layer are bonded. Compared with the traditional connection of bolts and double dovetail pins, the connection stability and reliability of the mortise and tenon formed by the tooth surface layer and the back layer are further enhanced, and finally the stability and reliability of the connection between the tooth surface layer and the back layer are further enhanced.
[0014] 3. In the utility model, the tooth surface layer and the back layer are matched with the connecting layer inverted drafting die, that is, the area of the opening of each pit is smaller than the area of the bottom of the pit, which greatly increases the contact area between the connecting layer and the tooth surface layer or the back layer, and further improves the stability and reliability of the connection between the tooth surface layer and the back layer, thereby further ensuring the extension of the service life of the grinding disc and the reduction of maintenance costs.
[0015] 4. The utility model adopts the back layer as a steel layer, which further reduces the production cost and makes the back layer have better toughness, which further ensures the impact resistance of the grinding disc and further enables the grinding disc to have a long life, thereby further ensuring the reduction of maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the working principle of the utility model;
[0017] Figure 2 The working principle of the connection layer of the utility model is shown in FIG. Figure 1 ;
[0018] Figure 3 The working principle of the connection layer of the utility model is shown in FIG. Figure 2 ;
[0019] Figure 4 The working principle of the connection layer of the utility model is shown in FIG. Figure 3 ;
[0020] Figure 5 It is a schematic diagram of the overall structure of the utility model;
[0021] Figure 6 It is a schematic diagram of the fan-shaped structure of the utility model;
[0022] In the figure: 1, tooth surface layer, 2, back layer, 3, connection layer, 4, pit, 41, opening, 42, pit bottom, 43, side wall, 5, connection surface I, 6, connection surface II, 7, fan-shaped structure. DETAILED DESCRIPTION
[0023] The utility model is described in detail below with reference to the accompanying drawings and embodiments. Example 1
[0024] See also Figure 1 to Figure 5 As shown, a double-layer grinding disc with pits is shown, including a tooth surface layer 1 made of cemented carbide with a circular overall structure (conventional materials such as cemented carbide are well known in the art, so no further explanation is given here), and a back layer 2 made of low-cost steel material with a circular overall structure (in specific implementation, the specific materials of the tooth surface layer 1 and the back layer 2 can be selected and adjusted according to actual needs), a connecting layer 3 formed by brazing or gluing is provided between the tooth surface layer 1 and the back layer 2, because the connecting layer 3 formed by brazing or gluing has a low hardness and good buffering performance, which can effectively reduce the impact force on the tooth surface layer 1, so that it has better impact resistance, a connecting surface Ⅰ5 is formed on the side of the tooth surface layer 1 facing the connecting layer 3, and a connecting surface Ⅱ6 is formed on the side of the back layer 2 facing the connecting layer 3, and a plurality of pits 4 with trapezoidal structure, conical structure or cylindrical structure are formed on the connecting surface Ⅰ5 and the connecting surface Ⅱ6 respectively (as shown in Figure 1 and Figure 2 respectively). Figure 2 , 3 As shown in FIG. 4 , at the same time, the number, shape, size and other parameters of the pits 4 can be adjusted according to actual needs), the connecting layer 3 is simultaneously attached to the pits 4, and the tooth surface layer 1 and the back surface layer 2 are respectively matched with the connecting layer 3 through the pits 4.
[0025] Furthermore, each pit 4 includes an opening portion 41 and a pit bottom 42 (in the present embodiment, the opening portion 41 of the pit 4 on the connecting surface Ⅰ5 is flush with the connecting surface Ⅰ5, and the opening portion 41 of the pit 4 on the connecting surface Ⅱ6 is flush with the connecting surface Ⅱ6), the area of the opening portion 41 is smaller than the area of the pit bottom 42, and a side wall portion 43 is formed between the opening portion 41 and the pit bottom 42.
[0026] In addition, the tooth surface layer 1 is made of cemented carbide material, and the back layer 2 is made of low-cost steel material. This not only solves the problem that the wear-resistant layer of the sprayed cemented carbide layer is difficult to achieve a long service life due to the thin wear-resistant layer, but also solves the problem that the entire grinding plate is made of cemented carbide, which has improved wear resistance but is very expensive. Example 2
[0027] This embodiment provides a double-layer grinding disc with pits, including a plurality of fan-shaped structures 7 (such as Figure 6 The tooth surface layer 1 and the back surface layer 2 are composed of the tooth surface layer 1 and the back surface layer 2. Other structures and the connection relationship between the structures are the same as those in Example 1. Example 3
[0028] This embodiment provides a double-layer grinding disc with pits, including a plurality of fan-shaped structures 7 (such as Figure 6 The tooth surface layer 1 composed of the tooth surface layer 1 and the back surface layer 2 of the circular overall structure are shown in the figure. Other structures and the connection relationship between the structures are the same as those in the embodiment 1.
[0029] Through the above-mentioned implementation mode, the utility model enables the grinding disc to have high wear resistance and long life, which can effectively reduce production costs, improve production efficiency, and reduce maintenance costs. At the same time, the structural design of the grinding disc is simple, easy to produce and install, and has good practicality and broad application prospects.
Claims
1. A double-layer grinding disc with pits, comprising a back layer, characterized in that: It also includes a tooth surface layer of cemented carbide, wherein the tooth surface layer and the back layer are connected together through a soft connecting layer, and pits are distributed on the opposite sides of the tooth surface layer and the back layer, and the connecting layer is also attached to the pits.
2. A double-layer grinding disc with pits according to claim 1, characterized in that: The connection layer is a soldering connection layer or an adhesive connection layer.
3. A double-layer grinding disc with pits according to claim 1, characterized in that: The tooth surface layer and the back surface layer are both matched with the connecting layer reverse drafting die.
4. A double-layer grinding disc with pits according to claim 1, characterized in that: Each of the pits includes an opening, a pit bottom, and a sidewall formed between the opening and the pit bottom, and an area of the opening is smaller than an area of the pit bottom.
5. A double-layer grinding disc with pits according to claim 4, characterized in that: The longitudinal section of the pit is a trapezoidal structure, a conical structure or a quasi-cylindrical structure.
6. A double-layer grinding disc with pits according to claim 1, characterized in that: There are a plurality of pits distributed on the tooth surface layer and the back surface layer respectively.
7. A double-layer grinding disc with pits according to claim 1, characterized in that: The tooth surface layer and the back surface layer are both a circular integral structure.
8. A double-layer grinding disc with pits according to claim 1, characterized in that: The tooth surface layer and the back surface layer are both circular structures formed by enclosing a plurality of fan-shaped structures.
9. A double-layer grinding disc with pits according to claim 1, characterized in that: The tooth surface layer is a circular structure formed by a plurality of fan-shaped structures, and the back surface layer is a circular integral structure.
10. A double-layer grinding disc with pits according to claim 1, characterized in that: The back layer is a steel layer.