Tundish mechanism for neodymium iron boron casting piece production

Abstract

The utility model relates to the technical field of tundishes, in particular to a tundish mechanism for neodymium iron boron casting piece production. According to the technical scheme, the pouring assembly comprises a middle pouring plate, an electric push rod, a supporting plate and receding assemblies, the receding assemblies are arranged on the front side and the rear side of the middle pouring plate, the supporting plate is fixedly installed at the top of a support, the electric push rod is fixedly installed at the bottom of the supporting plate, and the receding assemblies are arranged at the bottoms of the electric push rod; a middle pouring plate is rotationally connected to the inner wall of the support and located over the steel roller. The rotating speed of the steel roller is detected through the linear speed sensor, and the inclination angle of the middle pouring plate is adjusted to change the flowing speed of alloy liquid, so that the flowing speed of the alloy liquid is matched with the rotating linear speed of the steel roller, and the situation that the flowing speed of the alloy liquid and the rotating linear speed of the steel roller are too large in difference is avoided; and looseness and cracks are generated in the neodymium iron boron casting piece.

Description

Technical Field

[0001] The utility model relates to the technical field of tundishes, in particular to a tundish mechanism for producing NdFeB casting sheets. Background Art

[0002] NdFeB casting sheet is a tetragonal crystal formed by neodymium, iron and boron. It is made by mixing raw materials such as neodymium, iron and boron in a certain proportion, then placing the mixed raw materials into a vacuum induction melting furnace for smelting to make it into a uniform alloy liquid. Finally, the smelted alloy liquid is poured into a tundish, and the alloy liquid is cast into a steel roller through the tundish to form a casting sheet.

[0003] In the production process of NdFeB castings, the tundish plays the role of temporarily storing and distributing the alloy liquid. The tundish can make the alloy liquid flow into the steel roller more evenly, reducing the defects of the castings.

[0004] However, in the production process of NdFeB castings, the rotation speed of the steel roller is usually not fixed, while the position of the tundish is fixed, and the flow speed of the alloy liquid guided by the tundish is fixed. There will be a large difference between the linear speed of the steel roller rotation and the flow speed of the alloy liquid, resulting in defects in the production of NdFeB castings. Utility Model Content

[0005] The utility model aims to solve the problem in the background technology that a large difference between the linear speed of the steel roller rotation and the flow speed of the alloy liquid leads to product defects, and proposes a tundish mechanism for the production of NdFeB casting sheets.

[0006] The technical solution of the utility model is as follows: a tundish mechanism for producing NdFeB casting sheets comprises a support, the middle portion of which is rotatably connected to a steel roller;

[0007] The casting assembly includes an intermediate casting plate, an electric push rod, a support plate and a clearance assembly. The clearance assembly is arranged on the front and rear sides of the intermediate casting plate. The support plate is fixedly installed on the top of the support, the electric push rod is fixedly installed on the bottom of the support plate, and the clearance assembly is arranged on the bottom of the electric push rod;

[0008] The inner wall of the support is located just above the steel roller and is rotatably connected to the intermediate casting plate. The intermediate casting plate is tilted and the NdFeB alloy liquid flows on the intermediate casting plate.

[0009] Optionally, the give way component includes a give way slide and a give way frame. The give way slide is fixedly installed on the front and rear sides of the middle casting plate and near the right end. The give way frame is fixedly installed on the bottom of the electric push rod. The give way slide slide slides left and right in the give way frame.

[0010] Optionally, two electric push rods are provided and symmetrically distributed on the front and rear sides of the middle casting plate, and the clearance frame adopts a capsule-shaped structure.

[0011] Optionally, a linear speed sensor is fixedly installed at the top center of the support, the steel roller is located on the end extension line of the linear speed sensor, and the linear speed sensor is electrically connected to the electric push rod through a controller.

[0012] Optionally, the left end of the intermediate casting plate is located directly above the center point of the steel roller, and there is a distance between the linear speed sensor and the intermediate casting plate.

[0013] Optionally, a conveying component is further included, which includes a funnel and a docking sleeve. The bottom of the funnel adopts a rectangular outlet, the funnel passes through the support plate, and the outer wall of the funnel is slidably connected to the docking sleeve.

[0014] Optionally, extension plates are fixedly mounted on both the front and rear sides of the docking sleeve, and the bottom of the extension plate contacts the frame of the middle casting plate.

[0015] Optionally, a motor is fixedly installed inside the support, and the motor is fixedly connected to the steel roller via a rotating shaft.

[0016] Compared with the prior art, this application has at least one of the following beneficial technical effects:

[0017] The utility model detects the rotation speed of the steel roller through a linear speed sensor and adjusts the inclination angle of the middle casting plate to change the flow speed of the alloy liquid, so that the flow speed of the alloy liquid is adapted to the rotation linear speed of the steel roller, thereby avoiding a large difference between the flow speed of the alloy liquid and the rotation linear speed of the steel roller, which would cause looseness and cracks inside the NdFeB casting sheet.

[0018] Furthermore, the funnel and the docking sleeve cooperate to make the alloy liquid flow in a waterfall-like state, so that the alloy liquid flows evenly and matches the size of the intermediate casting plate. During the rotation of the intermediate casting plate, the intermediate casting plate drives the docking sleeve to move, so that the distance between the docking sleeve and the intermediate casting plate always remains stable, avoiding excessive distance between the docking sleeve and the intermediate casting plate, which causes alloy liquid to splash. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is given;

[0020] Figure 2 for Figure 1 A part of the linear velocity sensor structure enlarged schematic diagram;

[0021] Figure 3 A schematic structural diagram of an intermediate casting plate according to an embodiment of the present invention is given;

[0022] Figure 4A schematic structural diagram of a butt joint sleeve according to an embodiment of the present invention is given.

[0023] Figure numerals: 1. Support; 2. Steel roller; 3. Casting assembly; 31. Intermediate casting plate; 32. Linear speed sensor; 33. Give-way slide column; 34. Give-way frame; 35. Electric push rod; 36. Support plate; 4. Conveying assembly; 41. Funnel; 42. Docking sleeve; 43. Extension plate. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0026] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] Example 1

[0030] This embodiment proposes a tundish mechanism for producing NdFeB casting sheets, such as Figure 1As shown, it includes a support 1, a steel roller 2 is rotatably connected to the middle of the support 1, and a motor is fixedly installed inside the support 1, and the motor is fixedly connected to the steel roller 2 through a rotating shaft.

[0031] like Figure 1 and Figure 3 As shown, the inner wall of the support 1 is provided with a casting assembly 3, the casting assembly 3 includes an intermediate casting plate 31, an electric push rod 35, a support plate 36 and a give-way assembly, the support plate 36 is fixedly installed on the top of the support 1, the electric push rod 35 is fixedly installed on the bottom of the support plate 36, the give-way assembly includes a give-way slide 33 and a give-way frame 34, the give-way frame 34 is fixedly installed on the bottom of the electric push rod 35, and the give-way slide 33 slides left and right in the give-way frame 34.

[0032] like Figure 1 As shown, the inner wall of the support 1, located directly above the steel roller 2, is rotatably connected to an intermediate casting plate 31. The intermediate casting plate 31 is tilted, and a molten NdFeB alloy flows over it. A yielding slide 33 is fixedly mounted on the front and rear sides of the intermediate casting plate 31, near its right end. Two electric push rods 35 are provided, symmetrically distributed on both sides of the intermediate casting plate 31. The yielding frame 34 adopts a capsule-shaped structure to improve the stability of the intermediate casting plate 31 during rotation.

[0033] The electric push rod 35 is extended to move the clearance frame 34, and the clearance frame 34 pushes the clearance slide 33. The clearance slide 33 slides in the clearance frame 34 and moves up and down at the same time. The clearance slide 33 drives the intermediate casting plate 31 to rotate, thereby adjusting the inclination angle of the intermediate casting plate 31 and changing the flow rate of the alloy liquid on the intermediate casting plate 31.

[0034] like Figure 1 and Figure 2 As shown, a linear velocity sensor 32 is fixedly mounted at the top center of the support 1, and the steel roller 2 is located on the extension line of the end of the linear velocity sensor 32. The linear velocity sensor 32 is electrically connected to the electric push rod 35 through the controller. The linear velocity sensor 32 detects the rotation speed of the steel roller 2, and the linear velocity sensor 32 transmits the detection data to the controller. The controller controls the extension length of the electric push rod 35, that is, adjusts the inclination angle of the middle casting plate 31 to change the flow speed of the alloy liquid, so that the flow speed of the alloy liquid is adapted to the rotational linear velocity of the steel roller 2, thereby avoiding a large difference between the flow speed of the alloy liquid and the rotational linear velocity of the steel roller 2.

[0035] The left end of the intermediate casting plate 31 is located directly above the center point of the steel roller 2, and there is a gap between the linear velocity sensor 32 and the intermediate casting plate 31. The linear velocity sensor 32 is offset from the intermediate casting plate 31 to prevent the linear velocity sensor 32 from being blocked by the alloy liquid when detecting the linear velocity of the steel roller 2.

[0036] In this embodiment, the rotation speed of the steel roller 2 is detected by the linear speed sensor 32, and the inclination angle of the intermediate casting plate 31 is adjusted to change the flow speed of the alloy liquid so that the flow speed of the alloy liquid is adapted to the rotation linear speed of the steel roller 2, thereby avoiding a large difference between the flow speed of the alloy liquid and the rotation linear speed of the steel roller 2, which may lead to defects such as looseness and cracks inside the NdFeB casting.

[0037] Example 2

[0038] Based on Example 1, this example proposes a tundish mechanism for producing NdFeB castings, such as Figure 1 and Figure 4 As shown, a conveying assembly 4 is provided on the support plate 36 , and the conveying assembly 4 includes a funnel 41 and a docking sleeve 42 . The bottom of the funnel 41 adopts a rectangular outlet, the funnel 41 passes through the support plate 36 , and the outer wall of the funnel 41 is slidably connected to the docking sleeve 42 .

[0039] The funnel 41 and the butt joint sleeve 42 cooperate to create a waterfall-like flow of the molten alloy, ensuring a uniform flow and matching the dimensions of the intermediate casting plate 31. As the intermediate casting plate 31 rotates, the intermediate casting plate 31 drives the butt joint sleeve 42 to move, ensuring that the distance between the butt joint sleeve 42 and the intermediate casting plate 31 remains stable.

[0040] Extension plates 43 are fixedly mounted on both the front and rear sides of the butt joint sleeve 42, and the bottom of the extension plate 43 contacts the frame of the middle casting plate 31. This prevents the butt joint sleeve 42 from directly contacting the middle casting plate 31 and affecting the flow of the alloy liquid.

[0041] In this embodiment, the funnel 41 and the docking sleeve 42 cooperate to make the alloy liquid flow in a waterfall-like state, so that the alloy liquid flows evenly and matches the size of the intermediate casting plate 31. During the rotation of the intermediate casting plate 31, the intermediate casting plate 31 drives the docking sleeve 42 to move, so that the distance between the docking sleeve 42 and the intermediate casting plate 31 always remains stable, avoiding the distance between the docking sleeve 42 and the intermediate casting plate 31 being too large, which causes the alloy liquid to splash.

[0042] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art may make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A tundish mechanism for producing NdFeB casting sheets, characterized in that: include: A support (1), wherein a steel roller (2) is rotatably connected to the middle portion of the support (1); A casting assembly (3) comprises an intermediate casting plate (31), an electric push rod (35), a support plate (36) and a clearance assembly, wherein the clearance assembly is arranged on the front and rear sides of the intermediate casting plate (31), the support plate (36) is fixedly mounted on the top of the support (1), the electric push rod (35) is fixedly mounted on the bottom of the support plate (36), and the clearance assembly is arranged on the bottom of the electric push rod (35); The inner wall of the support (1) is located directly above the steel roller (2) and is rotatably connected to an intermediate casting plate (31). The intermediate casting plate (31) is tilted, and a NdFeB alloy liquid flows on the intermediate casting plate (31).

2. The tundish mechanism for producing NdFeB casting sheets according to claim 1, characterized in that: The said giving way component comprises a giving way slide (33) and a giving way frame (34); the giving way slide (33) is fixedly mounted on the front and rear sides of the said middle casting plate (31) and close to the right end; the giving way frame (34) is fixedly mounted on the bottom of the said electric push rod (35); the giving way slide (33) slides left and right in the giving way frame (34).

3. The tundish mechanism for producing NdFeB casting sheets according to claim 2, characterized in that: Two electric push rods (35) are provided and symmetrically distributed on the front and rear sides of the middle casting plate (31), and the clearance frame (34) adopts a capsule-shaped structure.

4. The tundish mechanism for producing NdFeB casting sheets according to claim 1, characterized in that: A linear speed sensor (32) is fixedly mounted at the top center of the support (1), the steel roller (2) is located on an end extension line of the linear speed sensor (32), and the linear speed sensor (32) is electrically connected to the electric push rod (35) via a controller.

5. The tundish mechanism for producing NdFeB casting sheets according to claim 4, characterized in that: The left end of the intermediate casting plate (31) is located directly above the center point of the steel roller (2), and there is a distance between the linear speed sensor (32) and the intermediate casting plate (31).

6. The tundish mechanism for producing NdFeB casting sheets according to claim 1, characterized in that: The conveying assembly (4) further comprises a funnel (41) and a docking sleeve (42). The bottom of the funnel (41) adopts a rectangular outlet. The funnel (41) passes through the support plate (36). The outer wall of the funnel (41) is slidably connected to the docking sleeve (42).

7. The tundish mechanism for producing NdFeB casting sheets according to claim 6, characterized in that: Extension plates (43) are fixedly mounted on both the front and rear sides of the docking sleeve (42), and the bottom of the extension plate (43) contacts the frame of the middle casting plate (31).

8. The tundish mechanism for producing NdFeB casting sheets according to claim 1, characterized in that: A motor is fixedly installed inside the support (1), and the motor is fixedly connected to the steel roller (2) via a rotating shaft.

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