Grinding wheel manufacturing mold of split type mold sleeve

Abstract

The utility model discloses a grinding wheel manufacturing die of a split type die sleeve, and belongs to the field of grinding wheel manufacturing. The die comprises a die sleeve, an upper pressing ring, a lower pressing ring, a base body, a core mold and a bottom plate, the core mold is arranged above the bottom plate, the base body is of an annular structure and is arranged between the core mold and the bottom plate, the die sleeve is arranged on the outer side of the core mold and the bottom plate in a sleeving mode, the upper pressing ring is inserted into a gap between the die sleeve and the core mold, and the lower pressing ring is inserted into a gap between the die sleeve and the bottom plate. The die sleeve comprises an outer die sleeve and an inner die sleeve; the inner die sleeve is of a split structure formed by splicing at least two parts, and the outer side face of the inner die sleeve is of a conical face structure. The inner side face of the outer die sleeve is of a conical surface structure matched with the inner side face of the inner die sleeve, and the outer die sleeve and the inner die sleeve are fixed to the outer side of the die through conical surface matching. The die sleeve can be disassembled without the mode that the die sleeve is ejected out through a press machine, damage to the die and the grinding wheel is reduced, the service life of the die is prolonged, and the quality of the grinding wheel is improved.

Description

Technical Field

[0001] The utility model belongs to the field of grinding wheel manufacturing, and more specifically relates to a grinding wheel manufacturing mold with a split mold sleeve. Background Art

[0002] In the prior art, when producing super-hard grinding wheels, such as diamond grinding wheels, the outermost mold used is typically a single-piece sleeve. During demolding, this mold is typically ejected using a press. However, under high temperature and pressure, the produced grinding wheel is prone to deformation. This method also requires a long demolding distance, which can damage the grinding wheel and mold, making demolding difficult.

[0003] Although the existing grinding wheel manufacturing mold can alleviate the mold damage problem by increasing the mold hardness, once the mold is demolded more times, the mold will also suffer greater damage, resulting in unstable quality of the manufactured grinding wheel and failure to meet the precision requirements. Increasing the mold hardness will also increase the mold preparation cost, which is not worth the cost.

[0004] For example, the patent document with Chinese patent application number: CN201310390480.2 and publication date: December 11, 2013, discloses a diamond grinding wheel processing tooling mold, including a mold ring and an upper mold, a lower mold, an upper pressure head, a lower pressure head, bolts and a demolding seat all mounted in the mold ring. A grinding wheel is clamped between the upper mold and the lower mold, and the two are connected by bolts. A loading layer is formed between the upper mold, the lower mold, the grinding wheel and the mold ring. The upper pressure head and the lower pressure head are clamped in the loading layer, and the demolding seat is clamped on the lower mold.

[0005] Although this solution uses a demoulding seat to realize mold demoulding, reducing manpower, its mold ring, namely the mold sleeve, is an integral structure. When demoulding, the mold sleeve is still ejected as a whole by a press, which may cause damage to the mold and grinding wheel.

[0006] Another example is the Chinese patent application number: CN201910060054.X, published on July 28, 2020, which discloses a resin grinding wheel mold and a pressing method thereof. The resin grinding wheel mold includes a mold frame, a first upper pressure ring, a second upper pressure ring, a lower pressure ring, an upper core type, a lower core type, and a fixed tooling. The mold frame is a hollow annular structure; the upper core type and the lower core type are both hollow annular structures; the lower pressure ring is an annular structure; the first upper pressure ring is an inverted "L"-shaped annular structure, which is used for removal after the first pressing and molding; the second upper pressure ring is an annular structure, which is used for the second pressing and molding.

[0007] In this solution, the mold frame also adopts an integral structure. When removing the mold, the mold frame needs to be ejected as a whole by a press, which will cause damage to the mold and grinding wheel. Summary of the Invention

[0008] 1. Problems to be solved

[0009] In view of the problem in the prior art that a grinding wheel manufacturing mold is pressed into shape by upper and lower pressure rings, and the mold sleeve needs to be ejected by a press after the grinding wheel is formed, which causes damage to the mold and the grinding wheel, the utility model provides a grinding wheel manufacturing mold with a split mold sleeve, which can achieve disassembly of the mold sleeve without the need to eject the mold sleeve by a press, reducing damage to the mold and the grinding wheel, and improving the service life of the mold and the quality of the grinding wheel.

[0010] 2. Technical solution

[0011] In order to solve the above problems, the present invention adopts the following technical solutions.

[0012] A grinding wheel manufacturing mold with a split mold sleeve comprises a mold sleeve, an upper pressure ring, a lower pressure ring, a base, a core mold and a base plate, wherein the core mold is arranged above the base plate, the base is an annular structure, and is arranged between the core mold and the base plate, the mold sleeve is arranged on the outside of the core mold and the base plate, the upper pressure ring is inserted into the gap between the mold sleeve and the core mold, and the lower pressure ring is inserted into the gap between the mold sleeve and the base plate, the mold sleeve comprises an outer mold sleeve and an inner mold sleeve; the inner mold sleeve is a split structure formed by splicing at least two parts, and its outer side surface is a conical structure; the inner side surface of the outer mold sleeve is a conical structure that matches the inner side surface of the inner mold sleeve, and is fixed to the outer side of the mold through the conical surface cooperation with the inner mold sleeve.

[0013] As a further improvement of the technical solution, the inner mold sleeve is split into 2-5 parts at intervals along its circumference.

[0014] As a further improvement of the technical solution, it also includes bolts, nuts and washers; through holes are opened at corresponding positions in the middle of the core mold and the base plate, the washers are arranged on the lower inner side surface of the core mold, the bolts pass through the base plate, the base, the core mold and the washers in sequence, and the nuts lock the studs from one side of the core mold.

[0015] As a further improvement of the technical solution, it also includes a positioning pin; pin holes are opened at corresponding positions of the head of the bolt and the base plate, and after the nut is tightened, the positioning pin is inserted into the pin holes on the bolt and the bottom at the same time.

[0016] As a further improvement of the technical solution, it also includes an inner diameter ring; the inner diameter ring is arranged between the core mold and the bottom plate, and is located on the inner side of the base.

[0017] As a further improvement of the technical solution, an upper push-pull portion is horizontally extended from the upper end of the upper pressure ring.

[0018] As a further improvement of the technical solution, the lower end of the lower pressure ring horizontally extends into a lower push-pull portion.

[0019] As a further improvement of the technical solution, the angle between the conical surface of the inner mold sleeve and the vertical direction is 10-20°.

[0020] As a further improvement of the technical solution, a positioning groove is provided on the outer side surface of the outer mold sleeve.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] (1) The utility model relates to a grinding wheel manufacturing mold with a split mold sleeve, which divides the mold sleeve located at the outermost layer of the mold sleeve into an outer mold sleeve and an inner mold sleeve, and further arranges the inner mold sleeve into a split structure arranged along the circumferential direction. On this basis, the mold sleeve can be fixed on the outside of the mold through the cooperation of the conical surfaces of the outer mold sleeve and the inner mold sleeve. When the mold needs to be unloaded, it is only necessary to knock the outer mold sleeve to make the outer mold sleeve slide down along the conical surface to loosen and fall off, and then the inner mold sleeve can be easily fallen off from the upper and lower pressure rings under the split structure to achieve mold unloading, thereby avoiding the damage to the mold and the grinding wheel caused by the high-pressure demoulding of the integral mold sleeve by a press in the prior art, thereby improving the service life of the mold and the quality of the grinding wheel;

[0024] (2) The utility model provides a grinding wheel manufacturing mold with a split mold sleeve. The core mold, the base body and the bottom plate are fixed together to form a mold cavity by bolts, nuts and gaskets, thereby ensuring the structural stability of the mold. After the nuts are tightened, the positioning pins are inserted into the pin holes of the bolts and the bottom plate to limit the rotation of the bolts relative to the assembly of the core mold, the base body and the bottom plate, thereby preventing the assembly from loosening, thereby further improving the structural stability of the mold.

[0025] (3) The utility model provides a split-type die sleeve for manufacturing a grinding wheel. By setting an inner diameter ring, the shape and size of the final formed grinding wheel can be controlled to achieve adjustment of the grinding wheel structure;

[0026] (4) The utility model provides a grinding wheel manufacturing mold with a split mold sleeve, and the ends of the upper and lower pressure rings are extended with push-pull parts, which can provide a larger force-bearing area for the upper and lower pressure rings when the press is pressed, making it easier for the press to work. At the same time, when unloading the mold, it also allows the staff to more easily remove the upper and lower pressure rings through the push-pull parts;

[0027] (5) The utility model provides a grinding wheel manufacturing mold with a split mold sleeve, and a positioning groove is provided on the outer side of the outer mold sleeve. On the one hand, it can reduce the weight of the outer mold sleeve and facilitate the disassembly and assembly of the outer mold sleeve. On the other hand, it can improve the adaptability of the external installation equipment to match the positioning groove, so that the positioning effect can be achieved through the positioning groove when the mold is installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1This is a schematic diagram of the structure of the grinding wheel manufacturing mold of the utility model;

[0029] Figure 2 It is a cross-sectional view of a mold for manufacturing a grinding wheel according to the present invention;

[0030] In the figure: 1. Outer mold sleeve; 2. Inner mold sleeve; 3. Upper pressure ring; 31. Upper push-pull part; 4. Lower pressure ring; 41. Lower push-pull part; 5. Base; 6. Core mold; 7. Bottom plate; 8. Bolt; 9. Nut; 10. Gasket; 11. Locating pin; 12. Inner diameter collar; 13. Locating groove. DETAILED DESCRIPTION

[0031] The following describes in detail exemplary embodiments of the present invention. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to implement the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from the spirit and scope of the present invention. The following more detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but is merely for illustration and does not limit the description of the features and characteristics of the present invention, in order to propose the best way to perform the present invention and to enable those skilled in the art to implement the present invention. Therefore, the scope of the present invention is limited only by the appended claims.

[0032] Example 1

[0033] A split-type die sleeve grinding wheel manufacturing mold is used for preparing superhard grinding wheels such as diamond grinding wheels. Its specific structure and technical effects are described in detail below.

[0034] like Figure 1 and Figure 2 As shown, the mold includes a mold sleeve, an upper pressure ring 3, a lower pressure ring 4, a base 5, a core mold 6, and a base plate 7. The mold sleeve, upper pressure ring 3, lower pressure ring 4, and base 5 are all annular structures, while the core mold 6 and base plate 7 are disc-shaped structures. The core mold 6 is positioned above the base plate 7, the base 5 is positioned between the core mold 6 and the base plate 7, the mold sleeve is positioned outside the core mold 6 and the base plate 7, the upper pressure ring 3 is inserted into the gap between the mold sleeve and the core mold 6, and the lower pressure ring 4 is inserted into the gap between the mold sleeve and the base plate 7. The upper pressure ring 3, lower pressure ring 4, base 5, core mold 6, and base plate 7 together form the cavity for the grinding wheel molding.

[0035] More specifically, the mold sleeve comprises an outer mold sleeve 1 and an inner mold sleeve 2. The inner mold sleeve 2 is a split structure formed by splicing at least two parts, with a conical outer surface. Generally, the inner mold sleeve 2 is split into 2-5 parts at intervals along its circumference. In this embodiment, it is divided into three parts, forming a three-petal structure. The inner surface of the outer mold sleeve 1 is a conical structure that matches the inner surface of the inner mold sleeve 2. The conical surface mates with the inner mold sleeve 2 and is fixed to the outer side of the mold. Generally, the angle between the cone of the inner mold sleeve 2 and the vertical direction is 10-20 degrees, and in this embodiment, it is 15 degrees.

[0036] During mold installation, the tapered surfaces of the outer mold sleeve 1 and inner mold sleeve 2 cooperate to secure the mold sleeve to the outside of the mold. To remove the mold, simply tap the outer mold sleeve 1, causing it to slide down the tapered surface and fall off. The split structure then allows the inner mold sleeve 2 to easily fall off the upper and lower pressure rings, completing mold removal. This avoids the damage to the mold and grinding wheel caused by high-pressure demolding of the integral mold sleeve using a press in the prior art, thereby extending the mold's service life and the quality of the grinding wheel.

[0037] To enhance the mold's structural stability, bolts 8, nuts 9, and washers 10 are also installed. Through holes are provided at corresponding locations in the center of the core mold 6 and the base plate 7. The washers 10 are located on the lower inner side of the core mold 6. Bolts 8 pass through the base plate 7, the base 5, the core mold 6, and the washers 10 in sequence. Nuts 9 tighten the studs 8 from the side of the core mold 6. The bolts 8, nuts 9, and washers 10 secure the core mold 6, base 5, and base plate 7 together to form the mold cavity, ensuring the mold's structural stability.

[0038] In addition, pin holes are provided at corresponding positions of the head of the bolt 8 and the bottom plate 7. After the nut 9 is tightened, the positioning pin 11 is inserted into the pin holes on the bolt 8 and the bottom 7 at the same time, which can limit the rotation of the bolt 8 relative to the assembly of the core mold 6, the base 5 and the bottom plate 7, thereby causing the assembly to loosen, further improving the structural stability of the mold.

[0039] In this embodiment, an upper push-pull portion 31 extends horizontally from the upper end of the upper pressure ring 3, and a lower push-pull portion 41 extends horizontally from the lower end of the lower pressure ring 4. The push-pull portion can provide a larger force-bearing area for the upper and lower pressure rings when the press is tightened, facilitating the operation of the press. At the same time, when unloading the mold, the push-pull portion also allows the staff to more easily remove the upper and lower pressure rings.

[0040] It is worth mentioning that the mold is also equipped with an inner diameter collar 12. The inner diameter collar 12 is arranged between the core mold 6 and the bottom plate 7, located on the inner side of the base 5. It can control the internal shape and size of the final grinding wheel, thereby adjusting the grinding wheel structure. At the same time, the outer side of the outer mold sleeve 1 is provided with a positioning groove 13. On the one hand, it can reduce the weight of the outer mold sleeve 1 and facilitate the disassembly and assembly of the outer mold sleeve 1. On the other hand, it can improve the adaptability of external mounting equipment to match the positioning groove 13, so that the positioning groove 13 can achieve a positioning effect during mold installation.

[0041] In summary, the grinding wheel manufacturing mold with a split mold sleeve in this embodiment can realize the disassembly of the mold sleeve without ejecting the mold sleeve by a press, thereby reducing the damage to the mold and the grinding wheel and improving the service life of the mold and the quality of the grinding wheel.

Claims

1. A grinding wheel manufacturing mold with a split mold sleeve, comprising a mold sleeve, an upper pressure ring (3), a lower pressure ring (4), a base (5), a core mold (6) and a bottom plate (7), wherein the core mold (6) is arranged above the bottom plate (7), the base (5) is an annular structure and is arranged between the core mold (6) and the bottom plate (7), the mold sleeve is arranged on the outside of the core mold (6) and the bottom plate (7), the upper pressure ring (3) is inserted into the gap between the mold sleeve and the core mold (6), and the lower pressure ring (4) is inserted into the gap between the mold sleeve and the bottom plate (7), characterized in that: The mold sleeve comprises an outer mold sleeve (1) and an inner mold sleeve (2); the inner mold sleeve (2) is a split structure formed by splicing at least two parts, and its outer side surface is a conical structure; the inner side surface of the outer mold sleeve (1) is a conical structure that matches the inner side surface of the inner mold sleeve (2), and is fixed to the outer side of the mold through the conical surface.

2. The grinding wheel manufacturing mold with a split mold sleeve according to claim 1, characterized in that: The inner mold sleeve (2) is split into 2-5 parts at intervals along its circumference.

3. The grinding wheel manufacturing mold with a split mold sleeve according to claim 1, characterized in that: It also includes a bolt (8), a nut (9) and a gasket (10); through holes are opened at corresponding positions in the middle of the core mold (6) and the base plate (7); the gasket (10) is arranged on the lower inner side surface of the core mold (6); the bolt (8) passes through the base plate (7), the base (5), the core mold (6) and the gasket (10) in sequence; the nut (9) locks the bolt (8) from one side of the core mold (6).

4. The grinding wheel manufacturing mold with a split mold sleeve according to claim 3, characterized in that: It also includes a positioning pin (11); pin holes are opened at corresponding positions of the head of the bolt (8) and the base plate (7); after the nut (9) is tightened, the positioning pin (11) is inserted into the pin holes on the bolt (8) and the base plate (7) at the same time.

5. The grinding wheel manufacturing mold with a split mold sleeve according to claim 1, characterized in that: It also includes an inner diameter collar (12); the inner diameter collar (12) is arranged between the core mold (6) and the bottom plate (7), and is located on the inner side of the base body (5).

6. The grinding wheel manufacturing mold with a split mold sleeve according to claim 1, characterized in that: An upper push-pull portion (31) extends horizontally from the upper end of the upper pressure ring (3).

7. The grinding wheel manufacturing mold with a split mold sleeve according to claim 2, characterized in that: A lower push-pull portion (41) extends horizontally from the lower end of the lower pressure ring (4).

8. A grinding wheel manufacturing mold with a split mold sleeve according to any one of claims 1 to 7, characterized in that: The angle between the conical surface of the inner mold sleeve (2) and the vertical direction is 10-20°.

9. A grinding wheel manufacturing mold with a split mold sleeve according to any one of claims 1 to 7, characterized in that: A positioning groove (13) is provided on the outer side surface of the outer mold sleeve (1).

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