Split type cutter for vertical disc mill

Abstract

The utility model discloses a split type cutter for a vertical disc mill, and belongs to the technical field of disc mills. The split type cutter comprises a static grinding cutter and a movable grinding cutter which are the same in structure, the static grinding cutter comprises a grinding disc fixed on the mounting seat and a plurality of split type compound cutters uniformly distributed on the grinding disc, each split type compound cutter comprises a cutter base body and a cutter head, the cutter base body is mounted on the grinding disc, and the cutter head is mounted on the cutter base body. The grinding cutter provided by the utility model is formed by circularly distributing the plurality of split composite cutters and fixing the split composite cutters on the grinding disc through the fasteners, so that when a single split composite cutter is damaged, only a damaged cutter head needs to be independently replaced; teeth are uniformly distributed on the annular grinding tooth surface, so that the service life is long; and a refrigerant is introduced into the cooling cavity of the static mounting seat, so that the split composite tool can be cooled, and the temperature rise phenomenon in the grinding process is effectively controlled.

Description

Technical Field

[0001] The utility model belongs to the technical field of disc grinders, in particular to a split cutter for a vertical disc grinder. Background Art

[0002] The rubber grinder grinds rubber particles into powder and is one of the key equipment in rubber production. The grinding disc of a conventional grinder includes a fixed blade disc fixed on the machine base and a moving blade disc installed on the transmission shaft, and the fixed blade disc and the moving blade disc have the same structure. The grinding disc itself has shear teeth on its surface. During the rotation of the moving blade disc, the granular materials in the working chamber are continuously sheared, and the granular materials gradually become powder.

[0003] As far as the existing technology is concerned, the hardness of hard rubber particles is relatively high. During the grinding process, the shear teeth and working surface of the grinding disc are easily worn, resulting in reduced production efficiency or even malfunction. Therefore, the grinding disc needs to be repaired and replaced regularly, and the overall cost of the grinding disc is high, and replacement and repair are also relatively difficult.

[0004] In addition, the grinding disc for grinding rubber is generally made of alloy steel. Even if the tooth surface is treated to enhance its surface hardness and wear resistance, the hardness and wear resistance of the alloy steel will not be very high, and the shearing efficiency is still low.

[0005] In addition, when the grinding disc shears the granular material, a large amount of heat is generated. If the material stays in the working chamber for too long, its temperature will rise a lot. When it exceeds the decomposition temperature of the material, the material will decompose and lose its value for use.

[0006] In summary, the existing grinding discs have the disadvantages of fast wear, low efficiency and fast heating, and it is urgent to develop a high-performance grinding tool to solve the above technical problems. Utility Model Content

[0007] The purpose of the utility model is to provide a split cutter for a vertical disc grinder to solve the above-mentioned problems existing in the prior art.

[0008] Technical solution: A split tool for a vertical disc grinder, including a grinding tool and a mounting seat for carrying the grinding tool, the grinding tool including a static grinding tool and a dynamic grinding tool of the same structure, the static grinding tool including a grinding disc fixed on the mounting seat and a plurality of split composite tools evenly distributed on the grinding disc, the split composite tool including a tool base and a tool head, the tool base is mounted on the grinding disc, and the tool head is mounted on the tool base.

[0009] Furthermore, a plurality of the cutter heads form an annular grinding tooth surface, the number of teeth on the annular grinding tooth surface is A, and the cutter head tooth shape presents a wedge angle structure of B degrees, wherein 80≤A, 45≤B≤65.

[0010] Furthermore, the tool base has a wedge-shaped block structure, and the wedge angle is C degrees, wherein 6≤C≤10.

[0011] Furthermore, the grinding disc is an annular structure, a grinding groove is formed on the grinding disc, and the split composite tool is arranged in the grinding groove.

[0012] Furthermore, the grinding disc of the static grinding knife is fixed on a static mounting seat, the static mounting seat is annular, a cooling cavity is arranged inside the static mounting seat, and an inlet and an outlet communicating with the cooling cavity are opened on the static mounting seat.

[0013] Furthermore, the tool substrate is made of 42CrMo material, and the tool head is made of polycrystalline diamond material.

[0014] Furthermore, the grinding disc is made of SUS30408 ​​material.

[0015] Beneficial effects: The grinding tool provided by the utility model is composed of several split composite tools distributed in a circle and fixed on the grinding disc with fasteners. The structure that plays the role of grinding and shearing is set separately. The wear and tear of a single split composite tool only requires the damaged tool head to be replaced independently, and there is no need to replace the entire tool. Compared with the traditional integral grinding disc, the maintenance difficulty and maintenance cost are greatly reduced.

[0016] In addition, the tooth profile is evenly distributed on the annular grinding tooth surface, and the cutter head is made of a specific material to ensure high working efficiency and long service life. The wedge-shaped block structure of the tool base is conducive to the smooth discharge of powder, and effectively improves the phenomenon of temperature rise and decomposition caused by poor discharge.

[0017] In addition, by introducing refrigerant into the cooling chamber of the static mounting seat, the temperature of the split composite tool can be reduced, thereby effectively controlling the temperature rise phenomenon during the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is an exploded view of the static grinding knife in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the split composite tool in the utility model;

[0021] Figure 4 The utility model is Figure 3 The enlarged view of point A in the middle;

[0022] Figure 5 It is a schematic diagram of the internal structure of the static mounting seat in the utility model.

[0023] The accompanying drawings are marked as follows: 1. split composite tool; 11. tool base; 12. tool head; 2. grinding disc; 21. grinding groove; 22. tool mounting hole; 23. grinding disc hole; 3. fastener; 4. static mounting seat; 41. cooling chamber; 42. seat hole; 43. feed port. DETAILED DESCRIPTION

[0024] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0025] like Figure 1-Figure 5 As shown, a split tool for a vertical disc grinder includes a grinding tool and a mounting seat for carrying the grinding tool, the grinding tool includes a static grinding tool and a dynamic grinding tool with the same structure, the static grinding tool includes a grinding disc 2 fixed on the mounting seat and a plurality of split composite tools 1 evenly distributed on the grinding disc 2, the split composite tool 1 includes a tool base 11 and a tool head 12, the tool base 11 is installed on the grinding disc 2, and the tool head 12 is installed on the tool base 11.

[0026] The grinding tool provided by the utility model is composed of a plurality of split composite tools 1 distributed in a circle and fixed on a grinding disc 2 with fasteners 3. The structure that plays a grinding and shearing role is set separately. The wear and tear of a single split composite tool 1 only requires the damaged tool head 12 to be replaced independently, and there is no need to replace the entire tool. Compared with the traditional integral grinding disc, the maintenance difficulty and maintenance cost are greatly reduced.

[0027] like Figure 2-Figure 3 As shown, a plurality of cutter heads 12 form an annular grinding tooth surface, the number of teeth on the annular grinding tooth surface is A, and the tooth shape of the cutter head 12 is a wedge angle structure of B degrees, wherein 80≤A, 45≤B≤65. More than 80 teeth are evenly distributed on the annular grinding tooth surface, and the tooth shape is set at a specific wedge angle, which can ensure high working efficiency and long service life.

[0028] like Figure 3 As shown, the tool base 11 is a wedge-shaped block structure, and the wedge angle is C degrees, where 6≤C≤10. The static grinding knife and the dynamic grinding knife use the tool base 11 to set the annular grinding tooth surface into a wedge surface, which is conducive to the smooth discharge of powder and effectively improves the temperature rise decomposition phenomenon caused by poor discharge.

[0029] like Figure 2 and Figure 4As shown, the grinding disc 2 is annular in structure, and a grinding groove 21 is provided on the grinding disc 2. The number of the grinding groove 21 is at least one, and the plurality of grinding grooves 21 are concentrically arranged. A tool mounting hole 22 is provided in the grinding groove 21, and the split composite tool 1 is mounted in the grinding groove 21 through the tool mounting hole 22 by means of a fastener 3. The grinding groove 21 can limit the split composite tool 1, which is beneficial to the assembly accuracy of a plurality of split composite tools 1, making them more stable during operation.

[0030] like Figure 1 and Figure 5 As shown, the grinding disc 2 of the static grinding knife is fixed on the static mounting seat 4, which is an annular structure, and a cooling cavity 41 is provided in the static mounting seat 4. The static mounting seat 4 is provided with an inlet and an outlet that are connected to the cooling cavity 41. The grinding disc 2 and the static mounting seat 4 are respectively provided with a grinding disc hole 23 and a seat hole 42, which are matched and connected by a fastener. When the grinder is working, a refrigerant is introduced into the cooling cavity 41 to cool the split composite tool 1, thereby effectively controlling the temperature rise phenomenon during the grinding process.

[0031] In particular, the tool base 11 is made of 42CrMo material, which has good surface hardness, wear resistance and anti-adhesion properties, and can quickly transfer the heat of the tool head 12 to the grinding disc 2. The tool head 12 is made of polycrystalline diamond material, which has high removal rate and toughness, and has self-sharpening properties when used as a tool. The grinding disc 2 is made of SUS30408 ​​material, which is easy to dissipate heat and has little thermal expansion, and is suitable as a seat material.

[0032] When the utility model is in use, the static mounting seat 4 is mounted on the machine base and connected to the circulating cold coal, and the dynamic mounting seat is mounted on the transmission shaft. When the grinder is working, the material is discharged into the working chamber from the feed port in the middle of the grinding disc 2 on the static mounting seat 4. As the dynamic grinding knife rotates, the material is ground into powder. When the temperature of the cutter head 12 rises, the cold air in the static mounting seat 4 begins to circulate, thereby achieving effective regulation of the material temperature and avoiding failure of the material due to heating. When the grinding efficiency is reduced due to the wear of the cutter head 12, the damaged split composite tool 1 can be replaced by simply opening the grinder without disassembling the machine, and the cost of maintenance and tool replacement is low, which has good practicality.

[0033] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A split tool for a vertical disc grinder, comprising a grinding tool and a mounting seat for carrying the grinding tool, wherein the grinding tool comprises a static grinding tool and a dynamic grinding tool of the same structure, characterized in that: The static grinding tool comprises a grinding disc (2) fixed on a mounting seat and a plurality of split composite cutting tools (1) evenly distributed on the grinding disc (2); the split composite cutting tool (1) comprises a cutting tool base (11) and a cutting tool head (12); the cutting tool base (11) is mounted on the grinding disc (2), and the cutting tool head (12) is mounted on the cutting tool base (11).

2. A split cutter for a vertical disc grinder according to claim 1, characterized in that: A plurality of the cutter heads (12) form an annular grinding tooth surface, the number of teeth on the annular grinding tooth surface is A, and the tooth shape of the cutter head (12) presents a wedge angle structure of B degrees, wherein 80≤A, 45≤B≤65.

3. A split cutter for a vertical disc grinder according to claim 2, characterized in that: The tool base (11) is in a wedge-shaped block structure, and the wedge angle is C degrees, wherein 6≤C≤10.

4. A split cutter for a vertical disc grinder according to claim 1, characterized in that: The grinding disc (2) is an annular structure, a grinding groove (21) is provided on the grinding disc (2), and the split composite tool (1) is arranged in the grinding groove (21).

5. The split cutter for a vertical disc grinder according to claim 1, characterized in that: The grinding disc (2) of the static grinding knife is fixed on a static mounting seat (4); the static mounting seat (4) is an annular structure; a cooling cavity (41) is provided in the static mounting seat (4); and an inlet and an outlet that are in communication with the cooling cavity (41) are provided on the static mounting seat (4).

6. A split cutter for a vertical disc grinder according to claim 1, characterized in that: The tool base (11) is made of 42CrMo material, and the tool head (12) is made of polycrystalline diamond material.

7. A split cutter for a vertical disc grinder according to claim 6, characterized in that: The grinding disc (2) is made of SUS30408 ​​material.

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