A two-way centrifugal casting machine

Abstract

The application relates to the technical field of casting, and relates to a bidirectional centrifugal casting machine which comprises a shell, a working cavity arranged in the shell, a rotating disc rotatably arranged at the lower side of the shell, a rotating support arranged at the upper side of the rotating disc, rotating supports circumferentially distributed around the shaft center of the rotating disc, a lower mold frame and an upper mold frame rotatably arranged on the rotating supports, and a forming cavity formed by the combination of the lower mold frame and the upper mold frame. Through the arrangement of the shell, the rotating disc, the working cavity, a flow guide body and the lower mold frame, the molten metal is diffused to the surrounding and flows into the forming cavity through the flow guide body, the rotating disc provides flow power for the molten metal to enter the forming cavity, and the product defects caused by incomplete filling of the casting can be reduced.

Description

Technical Field

[0001] This invention relates to the field of casting-related technologies, specifically a bidirectional centrifugal casting machine. Background Technology

[0002] Centrifugal casting machines are divided into three types: horizontal, vertical, and inclined. Horizontal centrifugal casting machines are mainly used for casting various tubular castings, and can also be used for casting large-diameter copper rollers for papermaking machines. Vertical centrifugal casting machines are mainly used to produce various ring castings and smaller non-circular castings. Driven by centrifugal force, metal crystallization proceeds sequentially from the mold wall to the inner surface of the casting. This directional cooling and crystallization, driven by centrifugal force, causes the molten metal to be thrown towards the mold sidewall, allowing casting defects such as porosity and shrinkage cavities to be closed under pressure. However, traditional centrifugal casting has some problems, such as transverse cracks in tubular castings and incomplete filling in some areas. The main problems solved by this device are how to improve the product filling integrity rate and how to reduce transverse cracks in the product. Summary of the Invention

[0003] The purpose of this invention is to provide a bidirectional centrifugal casting machine to overcome the above-mentioned defects in the prior art.

[0004] The present invention is achieved through the following technical solution.

[0005] A bidirectional centrifugal casting machine of the present invention includes a housing, a working cavity inside the housing, a rotating disk rotatably mounted on the lower side of the housing, a rotating support mounted on the upper side of the rotating disk, the rotating support being circumferentially distributed around the axis of the rotating disk, a rotating groove inside the rotating support, a lower mold frame and an upper mold frame rotatably mounted in the rotating groove of the rotating support, the lower mold frame and the upper mold frame being combined to form a forming cavity, a guide fluid being provided at the center of the rotating disk, a central groove being provided in the guide fluid, and guide pipes being circumferentially distributed and connected to the guide fluid, the guide pipes being respectively connected to the forming cavity, an annular groove being provided on the wall of the working cavity, an annular body rotatably mounted within the annular groove, the annular body having teeth inside and outside the annular body, an intermediate gear rotatably mounted on the upper side of the rotating disk, the intermediate gear being circumferentially distributed around the axis of the rotating disk, the intermediate gear meshing with the teeth inside the annular body, a first bevel gear being provided on the shaft of the intermediate gear, a second bevel gear meshing with the first bevel gear, a drive shaft being connected to the shaft of the second bevel gear, the inner end of the drive shaft being connected to the axis of the lower mold frame.

[0006] In a further technical solution, the outer casing is provided with a locking groove, the locking groove is connected to the annular sliding groove, a locking plate is slidably provided in the locking groove, the inner side of the locking plate is provided with teeth, the teeth of the locking plate can lock the teeth on the outer side of the annular body, a locking telescopic rod is hinged to one side wall of the locking groove, an extension body is provided on the outer side of the locking plate, and the shaft of the locking telescopic rod is rotatably connected to the extension body.

[0007] In a further technical solution, the outer shell is provided with a power groove, the power groove is connected to the annular slide groove, a power motor is installed in the power groove, the shaft of the power motor is provided with a drive gear, and the drive gear meshes with the teeth on the outer side of the annular body.

[0008] A further technical solution is provided, wherein a pressure relief pipe is connected to the upper side of the upper mold frame, and mounting brackets are provided on both sides of the upper mold frame and the lower mold frame, and the upper and lower mounting brackets can be connected to each other. A customized mold is installed in the molding cavity, and the customized mold includes two sets of molds, upper and lower.

[0009] In a further technical solution, a support base is provided on the lower side of the outer casing, a motor frame is provided on the lower side of the outer casing, a power motor is installed in the middle of the motor frame, and the shaft of the power motor is connected to the axis of the rotating disk.

[0010] In a further technical solution, the upper side of the outer shell is provided with a top cover, the upper side of the top cover is provided with a funnel, the funnel is provided with a through groove, and the through groove of the funnel is connected to the central groove of the guide fluid.

[0011] In a further technical solution, a transmission shaft bracket is provided on the upper side of the rotating disk near the transmission shaft, and the hole of the transmission shaft bracket is rotatably connected to the transmission shaft.

[0012] The beneficial effects of this invention are:

[0013] The present invention discloses a bidirectional centrifugal casting machine, which includes a shell, a rotating disk, a working chamber, a guide fluid, and a lower mold frame. Molten metal diffuses and flows into the forming cavity through the guide fluid. The rotating disk provides the flow force for the molten metal to enter the forming cavity, which can reduce product defects caused by incomplete filling of the casting. Furthermore, the lower mold frame and the upper mold frame rotate in the rotating support, causing the molten metal to be thrown towards the side wall of the mold, so that casting defects such as porosity and shrinkage cavities are closed under pressure, thus retaining the advantages of traditional centrifugal casting machines.

[0014] This device can control the rotation or locking of the annular body in the annular groove by setting a locking groove and a locking plate. When the annular body is locked, the locking telescopic rod rotates, and at this time, the bidirectional centrifugal motion is activated. It is used for casting solid products. The advantage is that it reduces the generation of transverse cracks. When the annular body is released, the annular body actively moves to drive the lower mold frame and the upper mold frame to rotate, and the rotating disk stops rotating. This mode is suitable for producing tube and shell products with hollow structures, thereby greatly improving the applicability of this device.

[0015] When the locking plate releases its lock on the annular body, the drive motor and drive gear drive the annular body to rotate actively. By controlling the direction and speed of the annular body's rotation, the rotation speed of the lower mold frame and the upper mold frame can be controlled independently. This allows the rotation speed to be independent of the rotating disk's speed and adapt to the requirements of different metals and product sizes. Similarly, by adjusting the rotation speed of the rotating disk and the annular body, while keeping the rotation state of the lower mold frame and the upper mold frame unchanged, the rotation speed of the rotating disk can be adjusted independently. This allows for independent control of the axial pressure of the molten liquid inside the molding cavity along the molding cavity, reducing the generation of defects such as porosity and shrinkage cavities in this direction. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 yes Figure 1 Enlarged schematic diagram of the structure at point AA;

[0020] Figure 3 yes Figure 2 Enlarged schematic diagram of the structure at point B;

[0021] Figure 4 yes Figure 2 Enlarged structural diagram at point C;

[0022] Figure 5 yes Figure 2 A magnified structural diagram of D in the diagram;

[0023] Figure 6 yes Figure 2 A magnified structural diagram of the EE in the middle; Detailed Implementation

[0024] The following is combined Figure 1-6 The present invention will be described in detail below. For ease of description, the directions referred to below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The projection relationships are consistent in the up, down, left, right, front, and back directions.

[0025] Combined with appendix Figure 1-6 A bidirectional centrifugal casting machine includes a housing 13, within which a working chamber 36 is provided. A rotating disk 35 is rotatably mounted on the lower side of the housing 13, and a rotating support 18 is mounted on the upper side of the rotating disk 35. The rotating support 18 is circumferentially distributed around the axis of the rotating disk 35, and has a rotating groove within it. A lower mold frame 19 and an upper mold frame 39 are rotatably mounted within the rotating groove of the rotating support 18. The lower mold frame 19 and the upper mold frame 39 are combined to form a forming cavity 20. A guide fluid 21 is located at the center of the rotating disk 35, and has a central groove within it. Guide pipes 22 are circumferentially distributed and connected to the guide fluid 21. The flow tube 22 is connected to the molding cavity 20. The working cavity 36 has an annular groove 16 on its wall. An annular body 17 is rotatably arranged in the annular groove 16. The annular body 17 has teeth on its inner and outer sides. An intermediate gear 30 is rotatably arranged on the upper side of the rotating disk 35. The intermediate gear 30 is distributed around the axis of the rotating disk 35. The intermediate gear 30 meshes with the teeth on the inner side of the annular body 17. The shaft of the intermediate gear 30 is provided with a first bevel gear 31. The first bevel gear 31 meshes with a second bevel gear 32. The shaft of the second bevel gear 32 is connected to a transmission shaft 34. The inner end of the transmission shaft 34 is connected to the axial position of the lower mold frame 19.

[0026] Molten metal is injected into the guide fluid 21. The rotating disk 35 rotates within the working chamber 36, driving the lower mold frame 19 and upper mold frame 39 to rotate. The annular body 17 is locked. The rotating disk 35 drives the surrounding intermediate gears 30 to rotate relative to the annular body 17. The intermediate gears 30 drive the first bevel gear 31 to rotate, which in turn drives the second bevel gear 32. The second bevel gear 32 drives the transmission shaft 34 to rotate, which in turn drives the lower mold frame 19 and upper mold frame 39 to rotate in the rotating groove of the rotating support 18. This achieves rotation in two directions. The molten metal enters the forming cavity 20 through the guide pipe 22 and moves outwards under centrifugal force, thus filling the forming cavity 20 completely. This prevents incomplete filling in certain areas of the forming cavity 20, avoiding defects in the casting. Furthermore, it ensures that the metal continues to cool during the process. Finally, the molten metal is subjected to centrifugal force along the axial direction of the forming cavity 20, which reduces the generation of transverse cracks in the casting. The lower mold frame 19 and the upper mold frame 39 rotate in the rotating support 18, driving the molten metal to rotate around the axis of the forming cavity 20, thereby reducing the presence of porosity. When the rotating disk 35 is locked and does not rotate, and the annular body 17 rotates in the annular slide 16, the annular slide 16 drives the intermediate gear 30 and the first bevel gear 31 to rotate. The first bevel gear 31 drives the transmission shaft 34 and the lower mold frame 19 and the upper mold frame 39 to rotate in the rotating support 18 through the second bevel gear 32. At this time, only the rotation of the lower mold frame 19 is retained. In this mode, the traditional centrifugal casting function is returned, which is suitable for manufacturing tube and shell castings. Similarly, when the molten metal is injected into the forming cavity 20, the rotating disk 35 rotates appropriately to increase the speed at which the molten metal fills the forming cavity 20, avoiding defects such as incomplete filling in tube and shell castings.

[0027] Preferably, the outer casing 13 is provided with a locking groove 23, which communicates with the annular sliding groove 16. A locking plate 24 is slidably provided in the locking groove 23. The inner side of the locking plate 24 is provided with teeth, which can lock the teeth on the outer side of the annular body 17. A locking telescopic rod 25 is hinged to one side wall of the locking groove 23. An extension body 26 is provided on the outer side of the locking plate 24. The shaft of the locking telescopic rod 25 is rotatably connected to the extension body 26.

[0028] The extension and retraction of the locking telescopic rod 25 causes the locking plate 24 to slide in the locking groove 23. When the locking telescopic rod 25 extends, the locking plate 24 approaches the outer side of the annular body 17 until the teeth on the inner side of the locking plate 24 engage with the teeth on the outer side of the annular body 17, thus realizing the function of locking the annular body 17 and the outer shell 13.

[0029] Preferably, the outer casing 13 is provided with a power groove 27, which is connected to the annular slide groove 16. A power motor 28 is installed in the power groove 27, and the shaft of the power motor 28 is provided with a drive gear 29, which meshes with the teeth on the outer side of the annular body 17.

[0030] The power motor 28 drives the drive gear 29 to rotate, and the drive gear 29 drives the ring body 17 to rotate in the annular groove 16. The power motor 28 provides power for the rotation of the ring body 17.

[0031] Preferably, a pressure relief pipe 40 is connected to the upper side of the upper mold frame 39, and mounting brackets 38 are provided on both sides of the upper mold frame 39 and the lower mold frame 19. The upper and lower mounting brackets 38 can be connected to each other. A custom mold 41 is installed in the molding cavity 20, and the custom mold 41 includes two sets of molds, upper and lower.

[0032] Custom mold 41 is installed in molding cavity 20. The shape of the inner cavity of mold 41 can be customized as needed to cast precision products with different shapes. Two sets of mounting brackets 38 can connect and seal the upper mold frame 39 and the lower mold frame 19. The pressure relief pipe 40 has the function of venting and draining liquid.

[0033] Preferably, a support base 10 is provided on the lower side of the outer casing 13, and a motor frame 12 is provided on the lower side of the outer casing 13. A power motor 11 is installed in the middle of the motor frame 12, and the shaft of the power motor 11 is connected to the axis of the rotating disk 35.

[0034] The support base 10 supports the device, the power motor 11 provides power for the rotation of the rotating disk 35, and the motor frame 12 serves to support and install the power motor 11.

[0035] Preferably, the outer shell 13 is provided with an upper cover 14, and the upper cover 14 is provided with a funnel 15. The funnel 15 is provided with a through groove, and the through groove of the funnel 15 is connected to the central groove of the guide fluid 21.

[0036] The top cover 14 can cover the opening on the upper side of the outer shell 13, reducing the high temperature inside the outer shell 13 from being conducted to the outside, thus protecting the operator. The funnel 15 serves to guide the molten metal to the central groove of the guide fluid 21.

[0037] Preferably, a drive shaft bracket 33 is provided on the upper side of the rotating disk 35 near the drive shaft 34, and the hole of the drive shaft bracket 33 is rotatably connected to the drive shaft 34.

[0038] The drive shaft bracket 33 is rotatably connected to the drive shaft 34, and the drive shaft bracket 33 serves to replicate and support the drive shaft 34.

[0039] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand and implement the present invention. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A bidirectional centrifugal casting machine, comprising a housing, characterized in that: The outer shell has a working cavity. A rotating disk is rotatably mounted on the lower side of the outer shell. A rotating support is mounted on the upper side of the rotating disk. The rotating support is circumferentially distributed around the axis of the rotating disk. A lower mold frame and an upper mold frame are rotatably mounted on the rotating support. The lower mold frame and the upper mold frame are combined to form a molding cavity. A guide fluid is provided at the center of the rotating disk. A central groove is provided in the guide fluid. Guide pipes are circumferentially distributed and connected to the guide fluid. The guide pipes are respectively connected to the molding cavity. An annular groove is provided on the wall of the working cavity. An annular body is rotatably mounted in the annular groove. The annular body has teeth inside and outside. An intermediate gear is rotatably mounted on the rotating disk. The intermediate gear is circumferentially distributed around the axis of the rotating disk. The intermediate gear meshes with the teeth inside the annular body. A first bevel gear is mounted on the shaft of the intermediate gear. A second bevel gear meshes with the first bevel gear. A drive shaft is connected to the shaft of the second bevel gear. The inner end of the drive shaft is connected to the axis of the lower mold frame. The outer casing is provided with a locking groove, which is connected to the annular sliding groove. A locking plate is slidably provided in the locking groove. The inner side of the locking plate is provided with teeth. The teeth of the locking plate can lock the teeth on the outer side of the annular body. A locking telescopic rod is hinged to one side wall of the locking groove. An extension body is provided on the outer side of the locking plate. The shaft of the locking telescopic rod is rotatably connected to the extension body. Molten metal is injected into the guide fluid, and the rotating disk rotates in the working chamber. The rotating disk drives the lower mold frame and the upper mold frame to rotate, and the annular body is locked. The rotating disk drives the surrounding intermediate gears to rotate relative to the annular body. The intermediate gears drive the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the transmission shaft to rotate. The transmission shaft drives the lower mold frame and the upper mold frame to rotate in the rotating groove of the rotating support, thus realizing the function of rotation in two directions.

2. The bidirectional centrifugal casting machine according to claim 1, characterized in that: The outer casing is provided with a power groove, which is connected to the annular slide groove. A power motor is installed in the power groove, and the shaft of the power motor is provided with a drive gear, which meshes with the teeth on the outer side of the annular body.

3. The bidirectional centrifugal casting machine according to claim 1, characterized in that: The upper mold frame is connected to a pressure relief pipe on its upper side. The upper mold frame and the lower mold frame are provided with mounting brackets on both sides. The upper and lower mounting brackets can be connected to each other. A custom mold is installed in the molding cavity. The custom mold includes two sets of molds, upper and lower.

4. The bidirectional centrifugal casting machine according to claim 1, characterized in that: The lower side of the outer casing is provided with a support base, and the lower side of the outer casing is provided with a motor frame. A power motor is installed in the middle of the motor frame, and the shaft of the power motor is connected to the axis of the rotating disk.

5. A bidirectional centrifugal casting machine according to claim 1, characterized in that: The outer shell is provided with a top cover, and a funnel is provided on the top side of the top cover. The funnel is provided with a through groove, and the through groove of the funnel is connected to the central groove of the guide fluid.

6. The bidirectional centrifugal casting machine according to claim 1, characterized in that: A drive shaft bracket is provided on the upper side of the rotating disk near the drive shaft, and the drive shaft is rotatably connected to the hole of the drive shaft bracket.

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