Molten metal flow guide structure

Abstract

The molten metal flow guide structure is used for guiding molten metal into a mold cavity of a mold to achieve casting of a bearing retainer and comprises a flow guide part, the flow guide part comprises a vertical flow guide part and a plurality of transverse flow guide parts circumferentially and evenly distributed on the side portion of the vertical flow guide part, and a vertical flow guide channel is formed in the vertical flow guide part; an opening in the upper end of the vertical flow guide channel is a flow guide inlet used for pouring molten metal, and the transverse flow guide part is provided with a transverse flow guide channel communicating with the vertical flow guide channel. The molten metal flow guide structure further comprises cohesion pieces connected with the transverse flow guide parts in a one-to-one correspondence mode, each cohesion piece comprises a first cohesion part and a second cohesion part, the first cohesion parts and the second cohesion parts are detachably connected and define a connecting channel, and the connecting channels are used for being connected with a mold and enabling the transverse flow guide channels to communicate with a cavity of the mold. According to the flow guide structure, the defective rate of the retainer is reduced, the flow guide structure is suitable for casting forming of bearing retainers of different specifications and sizes, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of bearing retainer casting, and specifically to a molten metal guide structure. Background Art

[0002] The bearing cage is an important component in the rolling bearing. It is also the most complex and expensive component in the bearing. It plays the role of maintaining the correct movement of the rolling elements and improving the bearing load distribution and lubrication performance.

[0003] Current bearing retainers are typically made from a tube blank, typically centrifugally cast or otherwise cast. The final shape is achieved through multiple internal and external cutting operations, followed by end face machining and pocket milling. This process achieves a material utilization rate of only approximately 20%, resulting in significant resource waste. Therefore, a squeeze casting method has been proposed for producing bearing retainers. This process involves pouring a predetermined amount of molten metal (e.g., molten iron mixed with aluminum alloy, brass, or other materials) into the retainer mold cavity. After the molten metal flows smoothly at a relatively low speed and high flow rate, high mechanical pressure is applied to solidify the metal under high pressure, causing a small amount of plastic deformation, thereby completing the production of the bearing retainer.

[0004] A guide structure is required to pour molten metal into the cage mold cavity. Currently, the guide structure designed for the cage mold is only adapted to the same cage mold, so that the guide structure can only be used for casting bearing cages of the same specifications and sizes. This increases the casting and manufacturing costs of bearing cages of different specifications and sizes. Moreover, the guide structure generally has only one outlet, which has low casting efficiency and uneven distribution of molten metal in the cavity, resulting in a high defective rate of bearing cage castings. In addition, as the use time increases, thick metal slag will stick to the inner wall of the guide structure, which is difficult to clean and affects the normal production progress. Utility Model Content

[0005] The present application provides a molten metal guide structure that can be adapted to the casting of bearing retainers of various specifications and sizes, thereby reducing costs and facilitating the cleaning of metal slag on the inner wall, effectively solving the problems existing in the prior art.

[0006] The technical solutions adopted in this application are:

[0007] A molten metal guide structure is used to guide molten metal into the cavity of a mold to realize the casting of a bearing retainer, including a guide member, the guide member including a vertical guide portion and a plurality of transverse guide portions uniformly distributed circumferentially on the sides of the vertical guide portion, a vertical guide channel is provided in the vertical guide portion, the upper end opening of the vertical guide channel is a guide inlet for pouring molten metal, and the transverse guide portion is provided with a transverse guide channel connected to the vertical guide channel; the molten metal guide structure also includes an embracing member connected to the transverse guide portion in a one-to-one correspondence, the embracing member includes a first embracing portion and a second embracing portion, the first embracing portion and the second embracing portion are detachably connected and enclosed to form a connecting channel, and the connecting channel is used to connect the mold and connect the transverse guide channel with the cavity of the mold.

[0008] The molten metal guide structure provided in this application also includes the following additional technical features:

[0009] The first end of the connecting channel is communicated with the transverse guide channel, the second end of the connecting channel is provided with a connecting outlet for connecting to the mold, and the connecting channel gradually rises from the first end to the second end.

[0010] The first embracing portion covers the top of the second embracing portion, and the end of the horizontal guide channel away from the vertical guide channel is provided with a guide outlet opening downward, and the first end of the connecting channel is provided with a connecting inlet opened on the top of the first embracing portion, and the connecting inlet is connected to the guide outlet.

[0011] The molten metal guide structure further includes a cover plate located below the transverse guide portion and covering the transverse guide channel, and the cover plate is provided with a pit located directly below the vertical guide channel.

[0012] The pit is configured as a hemispherical structure.

[0013] The cover plate is detachably connected to the transverse air guide portion.

[0014] The vertical flow guide portion is integrally connected to the horizontal flow guide portion.

[0015] The molten metal guide structure further includes a pouring cup arranged on the top of the vertical guide portion, and the inner diameter of the pouring cup gradually decreases from top to bottom.

[0016] The pouring cup is plugged into the vertical flow guide portion.

[0017] The pouring cup is welded to the vertical guide portion.

[0018] Due to the adoption of the above-mentioned technical solution, the technical effects achieved by the present application include at least the following: the molten metal guide structure of the present application is used to guide the molten metal into the mold cavity to achieve the casting of the bearing retainer, which includes a guide member. The molten metal enters the vertical guide channel through the guide inlet of the guide member, is evenly distributed into multiple horizontal guide channels, and finally enters the mold cavity through the connecting channel of the clasping member. Since the molds of existing retainers are mostly annular structures, and the inlet of the cavity is located on the inner side of the annular structure, during the actual casting, the guide structure can also be placed inside the mold, and the clasping member can be connected to the multiple inlets of the cavity one by one. The multiple connecting channels together pour the molten metal into the mold cavity, which helps to improve the casting efficiency and also helps to improve the uniformity of the molten metal filling in the cavity, thereby reducing the defective rate of the bearing retainer casting. The clasping member includes a first clasping portion and a second clasping portion that are detachably connected, allowing the clasping member to easily adapt to and connect to cavity inlets of varying lengths. Specifically, the first and second clasping portions need only be disassembled, the cavity inlet pre-installed within either one, and the other closed to establish connection between the connecting channel and the cavity inlet. Furthermore, because cavity inlets of varying lengths typically correspond to molds of varying diameters, and molds of varying diameters are used to manufacture bearing retainers of varying sizes, the molten metal diversion structure of the present application can accommodate the casting of bearing retainers of varying sizes. This allows the casting of bearing retainers of various sizes to share the same molten metal diversion structure, helping to reduce manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 An assembly diagram of the molten metal guide structure provided in an embodiment of the present application;

[0021] Figure 2 An exploded view of the molten metal guide structure provided in an embodiment of the present application;

[0022] Figure 3 A cross-sectional view of a molten metal guide structure provided in an embodiment of the present application;

[0023] Figure 4 A schematic structural diagram of a flow guide member provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of the structure of the clasping member provided in an embodiment of the present application;

[0025] Figure 6 This is an assembly diagram of the guide member and cover plate provided in an embodiment of the present application.

[0026] List of parts and reference numerals:

[0027] 1 guide member, 11 vertical guide portion, 12 horizontal guide portion, 13 vertical guide channel, 14 guide inlet, 15 horizontal guide channel, 16 guide outlet;

[0028] 2 embracing member, 21 first embracing portion, 22 second embracing portion, 23 connecting channel, 24 connecting outlet, 25 connecting inlet;

[0029] 3 covers, 31 pits;

[0030] 4 pouring cups. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0033] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and 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 this application based on specific circumstances.

[0034] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present application. Throughout this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0035] In the embodiments of this application, a molten metal diversion structure is provided. For ease of explanation and understanding, the following content provided in this application is based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is only a specific example and schematic illustration and does not constitute a specific limitation of the technical solution provided in this application.

[0036] like Figures 1 to 6 As shown, the present application provides a molten metal guide structure for guiding molten metal into the cavity of the mold to realize the casting of the bearing retainer, the guide structure includes a guide member 1, the guide member 1 includes a vertical guide portion 11 and a plurality of transverse guide portions 12 circumferentially uniformly distributed on the side of the vertical guide portion 11, a vertical guide channel 13 is provided in the vertical guide portion 11, the upper end opening of the vertical guide channel 13 is a guide inlet 14 for pouring molten metal, and the transverse guide portion 12 is provided with a transverse guide channel 15 connected to the vertical guide channel 13; the molten metal guide structure also includes an embracing member 2 connected to the transverse guide portion 12 in a one-to-one correspondence, the embracing member 2 includes a first embracing portion 21 and a second embracing portion 22, the first embracing portion 21 and the second embracing portion 22 are detachably connected and enclosed to form a connecting channel 23, the connecting channel 23 is used to connect the mold and connect the transverse guide channel 15 with the cavity of the mold. Figure 1 FIG3 schematically illustrates an embodiment in which four transverse air guides 12 are provided along the circumferential direction. Of course, in other embodiments, there may be three, five or other numbers of transverse air guides 12 .

[0037] The molten metal guide structure of the present application is used to guide molten metal into the mold cavity to achieve the casting of the bearing retainer. The molten metal enters the vertical guide channel 13 through the guide inlet 14 of the guide member 1, is then evenly distributed into the multiple transverse guide channels 15, and finally enters the mold cavity through the connecting channel 23 of the clasping member 2. Since the molds of existing retainers are mostly annular structures, and the entrance to the cavity is located on the inner side of the annular structure, during the actual casting, the guide structure can also be placed inside the mold, and the clasping member 2 can be connected to the multiple entrances of the cavity one by one. The multiple connecting channels 23 together pour molten metal into the mold cavity, which helps to improve casting efficiency and also helps to increase the uniformity of molten metal filling in the cavity, thereby reducing the defective rate of bearing retainer casting. The clasping member 2 includes a first clasping portion 21 and a second clasping portion 22 that can be detachably connected, allowing the clasping member 2 to easily adapt to cavity inlets of varying lengths. Specifically, the first clasping portion 21 and the second clasping portion 22 can be disassembled, the cavity inlet pre-installed within either of the first clasping portion 21 and the second clasping portion 22, and the other clasping portion closed to establish connection between the connecting channel 23 and the cavity inlet. Because cavity inlets of varying lengths typically correspond to molds of varying diameters, which are used to produce bearing retainers of varying sizes, the molten metal diversion structure of the present application can accommodate the casting of bearing retainers of varying sizes. This allows the casting of bearing retainers of various sizes to utilize the same molten metal diversion structure, helping to reduce manufacturing costs. The diversion structure is preferably made of cast iron, alloy, or steel, though other suitable materials may also be used as needed. The inner wall of the diversion structure may be lined with refractory material.

[0038] It should be noted that the present application does not specifically limit the manner in which the first embracing portion 21 and the second embracing portion 22 can be detachably connected. For example, the two can be detachably connected by screws or bolts. In addition, they can also be detachably connected with the aid of other tools, for example, they can be tied together by metal binding straps.

[0039] As a preferred embodiment of the present application, Figure 3As shown, the first end of the connecting channel 23 is connected to the transverse guide channel 15, and the second end of the connecting channel 23 is provided with a connecting outlet 24 for connecting to the mold, and the connecting channel 23 gradually rises from the first end to the second end. It can be understood by those skilled in the art that, through this design, the first end of the lower connecting channel 23 has a certain amount of storage effect on the molten metal. When the molten metal just enters each connecting channel 23 from the transverse guide channel 15, it is first stored at the first end of the connecting channel 23. When the water level of the molten metal stored in each connecting channel 23 reaches the position of the connecting outlet 24, it will flow into the mold cavity. Therefore, through this design, the molten metal transported to the mold cavity by each connecting channel 23 per unit time can be controlled to be substantially equal, avoiding the phenomenon that the amount of molten metal transported to the mold cavity by an individual connecting channel 23 per unit time is less than that of other connecting channels 23, which helps to improve the smoothness of the molten metal flow, reduce turbulence, and make it more evenly distributed in the mold cavity, thereby helping to improve the casting quality of the bearing retainer and reduce the defective rate.

[0040] Furthermore, if Figure 1 、 Figure 3 、 Figure 4 and Figure 5 As shown, the first embracing portion 21 covers the second embracing portion 22. A downwardly opening diversion outlet 16 is provided at the end of the transverse diversion channel 15 away from the vertical diversion channel 13. A connecting inlet 25 is provided at the first end of the connecting channel 23, opening at the top of the first embracing portion 21. The connecting inlet 25 connects to the diversion outlet 16. This design allows molten metal to flow downward within the transverse diversion channel 15, guided by the diversion outlet 16, and enter the first end of the connecting channel 23 through the connecting inlet 25, achieving short-term storage and increased volume of molten metal within the first end of the connecting channel 23.

[0041] As a preferred embodiment of the present application, Figure 1 、 Figure 2 、 Figure 3 and Figure 6As shown, the molten metal guide structure further includes a cover plate 3 located below the transverse guide portion 12 and covering the transverse guide channel 15. The cover plate 3 is provided with a recess 31 located directly below the vertical guide channel 13. Those skilled in the art will appreciate that by providing the recess 31 on the cover plate 3 directly below the vertical guide channel 13, the molten metal is stored in the recess 31 before flowing downward from the vertical guide channel 13. Only when the recess 31 is full of molten metal will the molten metal evenly overflow from the upper edge of the recess 31 to the circumferential transverse guide channel 15, thereby improving the uniformity with which the guide structure distributes the molten metal to each transverse guide channel 15.

[0042] Preferably, the pit 31 is configured as a hemispherical structure, which is more regular and enables the guide structure to distribute the molten metal into each transverse guide channel 15 more evenly.

[0043] Preferably, the cover plate 3 is detachably connected to the transverse guide portion 12, so that when metal slag adheres to the inner wall of the guide structure, the cover plate 3 can be removed from the transverse guide portion 12 to facilitate cleaning of the metal slag on the inner wall of the guide structure, thereby ensuring normal production progress. It should be noted that this application does not specifically limit the method of detachably connecting the cover plate 3 and the transverse guide portion 12. For example, the two can be detachably connected using screws or bolts.

[0044] As a preferred embodiment of the present application, the vertical air guide portion 11 and the horizontal air guide portion 12 are integrally connected to improve structural strength and reduce installation steps.

[0045] As a preferred embodiment of the present application, Figures 1 to 3 As shown, the molten metal guide structure also includes a pouring cup 4 provided at the top of the vertical guide portion 11. The inner diameter of the pouring cup 4 gradually decreases from top to bottom. The provision of the pouring cup 4 facilitates the pouring of molten metal, effectively preventing the molten metal from splashing or overflowing outward, and improving process safety.

[0046] In a preferred embodiment, the pouring cup 4 can be plugged into the vertical guide 11 to achieve a detachable connection. Therefore, the vertical guide 11 can accommodate pouring cups 4 of varying inner diameters, thereby enhancing versatility. In another preferred embodiment, the pouring cup 4 and the vertical guide 11 are welded to form a non-detachable connection, preventing the pouring cup 4 from falling off the vertical guide 11 during molten metal pouring, thereby affecting the casting process.

[0047] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0048] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0049] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A molten metal guide structure for guiding molten metal into a mold cavity to achieve casting of a bearing retainer, characterized in that: The guide comprises a vertical guide portion and a plurality of transverse guide portions uniformly distributed circumferentially on the sides of the vertical guide portion. A vertical guide channel is provided in the vertical guide portion. The upper end opening of the vertical guide channel is a guide inlet for pouring molten metal. The transverse guide portion is provided with a transverse guide channel connected to the vertical guide channel. The molten metal guide structure also includes an embracing piece connected to the lateral guide part in a one-to-one correspondence, and the embracing piece includes a first embracing part and a second embracing part. The first embracing part and the second embracing part are detachably connected and enclosed to form a connecting channel. The connecting channel is used to connect the mold and connect the lateral guide channel with the mold cavity.

2. The molten metal guide structure according to claim 1, characterized in that: The first end of the connecting channel is communicated with the transverse guide channel, the second end of the connecting channel is provided with a connecting outlet for connecting to the mold, and the connecting channel gradually rises from the first end to the second end.

3. The molten metal guide structure according to claim 2, characterized in that: The first embracing portion covers the top of the second embracing portion, and the end of the horizontal guide channel away from the vertical guide channel is provided with a guide outlet opening downward, and the first end of the connecting channel is provided with a connecting inlet opened on the top of the first embracing portion, and the connecting inlet is connected to the guide outlet.

4. The molten metal guide structure according to claim 1, characterized in that: The molten metal guide structure further includes a cover plate located below the transverse guide portion and covering the transverse guide channel, and the cover plate is provided with a pit located directly below the vertical guide channel.

5. The molten metal guide structure according to claim 4, characterized in that: The pit is configured as a hemispherical structure.

6. The molten metal guide structure according to claim 4, characterized in that: The cover plate is detachably connected to the transverse air guide portion.

7. The molten metal guide structure according to claim 1, characterized in that: The vertical flow guide portion is integrally connected to the horizontal flow guide portion.

8. The molten metal guide structure according to claim 1, characterized in that: The molten metal guide structure further includes a pouring cup arranged on the top of the vertical guide portion, and the inner diameter of the pouring cup gradually decreases from top to bottom.

9. The molten metal guide structure according to claim 8, characterized in that: The pouring cup is plugged into the vertical flow guide portion.

10. The molten metal guide structure according to claim 8, characterized in that: The pouring cup is welded to the vertical guide portion.

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