Muffle furnace demagnetized material block discharging device for neodymium-iron-boron magnet production

Abstract

The utility model belongs to the technical field of neodymium-iron-boron sintering, and particularly relates to a muffle furnace demagnetized material block discharging device used in neodymium-iron-boron magnet production, which comprises a frame, a moving device arranged at the bottom of the frame and a carrying platform movably arranged above the frame. A lifting mechanism for adjusting the height of the carrying platform is arranged between the lower surface of the carrying platform and the frame, the lifting mechanism comprises a plurality of adjusting bolts and a plurality of nuts, the adjusting bolts are distributed on the lower surface of the carrying platform in a rectangular shape, the nuts are connected to the bolts in a threaded mode, and the adjusting bolts are vertically arranged and arranged on the surface of the frame in a penetrating mode; the upper surface of the object carrying platform is slidably connected with a push plate moving in the length direction of the object carrying platform, the lower surface of the object carrying platform is provided with a power assembly used for driving the push plate to move, and the push plate moves on the horizontal plane under the action of the power assembly and pushes the neodymium-iron-boron magnet to move. The problem that the efficiency is low in the current neodymium-iron-boron magnet transferring process can be effectively solved.

Description

Technical Field

[0001] This utility model belongs to the field of NdFeB sintering technology, specifically relating to a demagnetizing material discharge device for a muffle furnace in the production of NdFeB magnets. Background Technology

[0002] Neodymium iron boron (NdFeB) is a magnetic material and the strongest known type of permanent magnet. NdFeB can be divided into sintered NdFeB and bonded NdFeB. Because the magnetic properties of sintered NdFeB are far superior to those of bonded NdFeB, sintered NdFeB is widely used in electronics, electrical machinery, medical devices, toys, packaging, hardware machinery, aerospace, and other fields. In the production process of NdFeB magnets, muffle furnaces are used for demagnetizing magnetic blocks. The demagnetized blocks often have high temperatures and considerable weight. Traditional manual handling methods are not only inefficient but also pose safety risks such as burns and the handling of heavy objects. Furthermore, the discharge port height may vary between different muffle furnaces, and the lack of adaptable discharge trolleys further exacerbates the difficulty of the discharge operation.

[0003] To address the aforementioned technical issues, for example, a Chinese patent discloses a neodymium iron boron (NdFeB) permanent magnet transfer trolley (patent publication number: CN212709478U). This trolley features a loading platform on top of the frame for loading NdFeB magnets, guide blocks on both sides of the platform for material guidance, and a fixing component for the NdFeB magnets on the platform. This effectively improves the transfer and securing of NdFeB magnets during transport. Another example is a Chinese patent discloses a trolley for picking up and placing NdFeB magnets (patent publication number: CN215553315U). A hydraulic cylinder extends and retracts, moving the top plate up and down for a single lifting motion. A stepper motor rotates, moving the first support plate connected to a lead screw up and down for a secondary height adjustment. This enables automatic picking and placing of magnets at different heights, reducing the workload of construction workers and improving efficiency during handling.

[0004] While the above-mentioned technical solutions can effectively solve some problems encountered in the production and transportation of NdFeB magnets, the high temperature and heavy weight of NdFeB magnets after demagnetization in a muffle furnace increase the difficulty of transportation for workers. It is usually necessary to use additional clamping equipment or other auxiliary tools to transfer the NdFeB magnets onto a trolley. After the trolley carrying the NdFeB magnets has been transported to the designated location, it needs to be unloaded, which increases construction and time costs and reduces the efficiency of transportation work. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a demagnetizing material discharge device for muffle furnace in the production of NdFeB magnets, so as to solve the problem of low efficiency in the current NdFeB magnet transfer process.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A demagnetizing material unloading device for a muffle furnace in the production of NdFeB magnets includes a frame, a moving device located at the bottom of the frame, and a loading platform movably mounted above the frame. A lifting mechanism for adjusting the height of the loading platform is provided between the lower surface of the loading platform and the frame. The lifting mechanism includes multiple adjusting bolts arranged in a rectangle on the lower surface of the loading platform and multiple nuts threaded onto each adjusting bolt. Each adjusting bolt is vertically positioned and passes through the surface of the frame. A push plate that moves along the length of the upper surface of the loading platform is slidably connected to the upper surface. A power assembly for driving the push plate is provided on the lower surface of the loading platform, and the push plate moves horizontally under the action of the power assembly, pushing the NdFeB magnets to move.

[0008] Furthermore, the power assembly includes two lead screws mounted and rotatably connected to the lower surface of the loading platform, and a drive motor that drives the two lead screws to rotate synchronously. The two lead screws are arranged along the length of the loading platform, and each lead screw has a connecting block sleeved and threadedly connected to a push plate on its outer surface. The surface of the loading platform has a strip-shaped through hole for each connecting block to slide.

[0009] Furthermore, both sides of the loading platform protrude vertically from its upper surface along its length, and each protruding side surface is slidably connected to a slider that moves along its length. A horizontally arranged stop is provided between the two sliders. One end of the stop is hinged to one of the sliders and rotates in the vertical plane, while the other end of the stop is detachably connected to the other slider. Each slider is provided with a limiting member between itself and the side of the loading platform to fix its position.

[0010] Furthermore, the vertical cross-section of the push plate in the width direction is "L" shaped, and the surface of the push plate is fixed with a plurality of reinforcing blocks arranged in an array along its length direction.

[0011] Furthermore, the surface of the loading platform that docks with the muffle furnace protrudes from the frame by a certain distance, and the protruding part is covered with a buffer block on the side surface of the muffle furnace.

[0012] Furthermore, a push rod is connected to one side surface of the frame at an angle, and a switch assembly for controlling the drive motor is sleeved and fixed on the outer surface of the push rod.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention, by setting a lifting mechanism between the vehicle frame and the loading platform, can adjust the height of the loading platform within a certain range and can be used to discharge materials from muffle furnaces of different sizes and heights, effectively improving the applicability of this invention; furthermore, by setting a movable push plate and a power component driving its movement on the upper surface of the loading platform, it can push neodymium iron boron magnets to transfer them out of the loading platform, reducing the burden on workers and effectively improving work efficiency.

[0015] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0017] Figure 1 This is a schematic diagram of the overall structure of the vehicle frame of this utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the vehicle frame of this utility model. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the overall structure of the vehicle frame of this utility model. Figure 3 ;

[0020] Figure 4 This is a side view of the overall structure of the vehicle frame of this utility model;

[0021] Figure 5 For this Figure 3 Enlarged view of point A in the middle;

[0022] Figure 6 This is a schematic diagram of the movable structure of the stop block of this utility model.

[0023] The following labels are shown in the attached diagram:

[0024] 1. Frame, 2. Cargo platform, 3. Moving device, 4. Adjusting bolt, 5. Push plate, 6. Power assembly, 601. Lead screw, 602. Connecting block, 603. Drive motor, 7. Support block, 8. Slider, 9. Stop block, 10. Limiting component, 11. Reinforcing block, 12. Push rod, 13. Switch assembly, 14. Neodymium iron boron magnet. Detailed Implementation

[0025] like Figures 1-6 As shown,

[0026] A demagnetizing material unloading device for a muffle furnace in the production of NdFeB magnets includes a frame 1, a moving device 3 located at the bottom of the frame 1, and a loading platform 2 movably mounted above the frame 1. Both the frame 1 and the loading platform 2 are rectangular. The moving device 3 includes four rectangular casters located at the bottom of the frame 1, each caster having a limiter to restrict its rotation (casters and limiters are existing technology and will not be described in detail here). A lifting mechanism for adjusting the height of the loading platform 2 is provided between the lower surface of the loading platform 2 and the frame 1. The lifting mechanism includes multiple rectangular supports distributed on the lower surface of the loading platform 2. Adjusting bolts 4 and two nuts threaded onto each adjusting bolt 4. The upper end of each adjusting bolt 4 is welded to the lower surface of the loading platform 2. Each adjusting bolt 4 is vertically positioned, and the lower end of each adjusting bolt 4 passes through the surface of the frame 1 (the surface of the frame 1 has through holes for the adjusting bolts 4 to pass through). A push plate 5 that moves along its length direction is slidably connected to the upper surface of the loading platform 2. The push plate 5 is set along the width direction of the loading platform 2. A power assembly 6 for driving the push plate 5 to move is provided on the lower surface of the loading platform 2. Under the action of the power assembly 6, the push plate 5 moves on the horizontal plane and pushes the neodymium iron boron magnet 14 to move.

[0027] The power assembly 6 includes two lead screws 601 mounted and rotatably connected to the lower surface of the loading platform 2, and a drive motor 603 that drives the two lead screws 601 to rotate synchronously. The two lead screws 601 are arranged along the length direction of the loading platform 2 and are symmetrical about the axis of the loading platform 2. Each lead screw 601 has a connecting block 602 threadedly connected to the outer surface and fixed to the push plate 5. The surface of the loading platform 2 has a strip-shaped through hole for each connecting block 602 to slide. One end of the connecting block 602 passes through the corresponding strip-shaped through hole and is fixedly connected to the push plate 5 by bolts. The drive motor 603 is fixed to the lower surface of the loading platform 2 by bolts, and the output end of the drive motor 603 transmits power to the two lead screws 601 through existing transmission equipment such as sprockets and chains, thereby driving the two lead screws 601 to rotate synchronously in the same direction.

[0028] As shown in the figure, when it is necessary to transfer the NdFeB magnet 14 after it has been demagnetized in the muffle furnace ( Figure 1The accompanying diagrams all depict the transfer of multiple NdFeB magnets (though only one type of NdFeB magnet is shown in the diagrams). First, the height of the carrying platform 2 is adjusted. This is achieved by adjusting bolts 4 and the two nuts on each bolt 4, positioning the carrying platform 2 to match the height of the muffle furnace opening. The drive motor 603 is then controlled to adjust the push plate 5 to a position close to the side of the carrying platform 2, keeping the upper surface of the carrying platform 2 level. Next, the moving device 3 moves the frame 1 and carrying platform 2 to the muffle furnace outlet, placing one side of the carrying platform 2 against the muffle furnace outlet. The NdFeB magnet 14 inside the muffle furnace is then pulled out and transferred to the upper surface of the carrying platform 2 (a tow hook, clamps, or existing known clamping equipment can be used to pull out the NdFeB magnet). Then, the process continues... The mobile frame 1 moves the NdFeB magnet 14 to the next position. When it is necessary to unload the NdFeB magnet 14, due to its high temperature and large weight, it is inconvenient for construction personnel to unload it manually. Therefore, the drive motor 603 is controlled to drive the two lead screws 601 to rotate, and drive the push plate 5 to move towards the NdFeB magnet 14 until the push plate 5 abuts against the surface of the NdFeB magnet 14 and pushes it a certain distance, so that the NdFeB magnet 14 is transferred from the carrying platform 2 to the next work station, completing the unloading of the NdFeB magnet 14. This effectively reduces the burden on the workers to push the NdFeB magnet 14. In addition, through the cooperation of four adjusting bolts 4 and nuts, the height of the carrying platform 2 can be adjusted within a certain range to adapt to muffle furnaces of different heights, thereby improving the applicability of this utility model. The adjustment method is simple and quick, and convenient for workers to use.

[0029] In this embodiment, the two sides of the loading platform 2 along its length direction are fixedly connected with support blocks 7 protruding from their upper surfaces by bolts. Each support block 7 has a slider 8 that moves along its length direction slidably connected to its surface. A horizontally arranged stop block 9 is provided between the two sliders 8. The stop block 9 is arranged along the width direction of the loading platform 2. One end of the stop block 9 is hinged to one of the sliders 8 and rotates in the vertical plane. The other end of the stop block 9 is detachably connected to the other slider 8 (two locking blocks for limiting the horizontal movement of the stop block 9 are welded and fixed to the upper surface of the stop block 9, as shown in the figure). Each slider 8 and the support block 7 is provided with a limiting member 10 for fixing its position. The limiting member 10 includes a fixing bolt passing through the surface of each slider 8 and a nut threadedly connected to it. Each support block 7 has a strip-shaped through hole arranged along its length direction on its surface.

[0030] As shown in the figure, one end of the fixing bolt passes through the strip-shaped through hole on the slider 8 and the support block 7 and is threaded into the nut, which can fix the slider 8 in the current position, making the operation convenient and quick. After the neodymium iron boron magnet 14 is transferred to the upper surface of the carrying platform 2, in order to prevent it from shaking during the transfer process and affecting the working efficiency, the drive motor 603 is controlled to indirectly drive one side surface of the push plate 5 to abut against the surface of the neodymium iron boron magnet 14. Then, the stop block 9 and the slider 8 hinged to it are moved along the length direction of the carrying platform 2, and the stop block 9 is placed horizontally and facing the neodymium iron boron magnet. The magnet 14 moves in the direction of movement until one side surface of the stop 9 abuts against the surface of the NdFeB magnet 14. At this point, the opposite two sides of the NdFeB magnet 14 are abutted by the stop 9 and the push plate 5, respectively. The free end of the stop 9 is detachably connected to another slider 8. Then, the fixing bolts and nuts on each slider 8 are tightened, so that each slider 8 is fixed in the current position, and the NdFeB magnet 14 is fixed in the current position. When it is necessary to remove the NdFeB magnet 14, lift one end of the stop 9 and rotate it in the vertical plane so that it is no longer abutting against the NdFeB magnet 14 (which can be combined with...). Figure 6 As shown in the figure, the neodymium iron boron magnet 14 can be pushed away from the loading platform 2 by the push plate 5. The operation is quick and convenient, which effectively improves the work efficiency.

[0031] In this embodiment, the vertical cross-section of the push plate 5 in the width direction is "L" shaped, and multiple reinforcing blocks 11 arranged in an array along its length direction are welded and fixed to the surface of the push plate 5, which can effectively improve the stability of the push plate 5.

[0032] In this embodiment, the surface of the loading platform 2 that docks with the muffle furnace protrudes from the frame 1 by a certain distance, and the surface of the protruding part near the muffle furnace is covered with a buffer block, which can be made of rubber or plastic. (The buffer block is not shown in the figure).

[0033] As shown in the figure, when the loading platform 2 is connected to the muffle furnace opening, the side surface of the loading platform 2 protruding from the frame 1 abuts against the muffle furnace opening, so that the upper surface of the loading platform 2 and the muffle furnace opening are at the same level. This facilitates the transfer of the neodymium iron boron magnet 14, while reducing the damage caused by the frame 1 abutting against the surface of the muffle furnace. In addition, the design of the buffer block can reduce the wear of the side surface of the loading platform 2.

[0034] In this embodiment, a push rod 12 is fixedly connected to one side surface of the frame 1 by bolts. A switch assembly 13 for controlling the drive motor 603 is sleeved and fixed on the outer surface of the push rod 12, which facilitates the staff to push the frame 1 and control the drive motor 603.

[0035] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A demagnetizing material discharge device for a muffle furnace in the production of NdFeB magnets, comprising a frame (1), a moving device (3) disposed at the bottom of the frame (1), and a loading platform (2) movably disposed above the frame (1), characterized in that: The lower surface of the loading platform (2) is provided with a lifting mechanism for adjusting the height of the loading platform (2) between the lower surface of the loading platform (2) and the frame (1). The lifting mechanism includes multiple adjusting bolts (4) distributed in a rectangle on the lower surface of the loading platform (2) and multiple nuts threaded onto each adjusting bolt (4). Each adjusting bolt (4) is vertically placed and passes through the surface of the frame (1). The upper surface of the loading platform (2) is slidably connected to a push plate (5) that moves along its length. The lower surface of the loading platform (2) is provided with a power component (6) for driving the push plate (5) to move. Under the action of the power component (6), the push plate (5) moves on the horizontal plane and pushes the neodymium iron boron magnet (14) to move.

2. The muffle furnace demagnetizing material discharge device for NdFeB magnet production according to claim 1, characterized in that: The power assembly (6) includes two lead screws (601) mounted and rotatably connected to the lower surface of the loading platform (2) and a drive motor (603) that drives the two lead screws (601) to rotate synchronously. The two lead screws (601) are arranged along the length of the loading platform (2). Each lead screw (601) has a connecting block (602) sleeved and threadedly connected to the outer surface of the outer surface of the outer surface of the outer surface of the inner surface of the loading platform (5) and the surface of the loading platform (2) has a strip-shaped through hole for each connecting block (602) to slide.

3. The muffle furnace demagnetizing material discharge device for NdFeB magnet production according to claim 2, characterized in that: The loading platform (2) has two sides that protrude vertically from its upper surface along its length direction, and each protruding side surface is slidably connected to a slider (8) that moves along its length direction. A horizontally arranged stop block (9) is provided between the two sliders (8). One end of the stop block (9) is hinged to one of the sliders (8) and rotates in the vertical plane. The other end of the stop block (9) is detachably connected to the other slider (8). Each slider (8) is provided with a limiting member (10) for fixing its position between it and the side of the loading platform (2).

4. The muffle furnace demagnetizing material discharge device for NdFeB magnet production according to claim 3, characterized in that: The vertical cross section of the push plate (5) in the width direction is "L" shaped, and multiple reinforcing blocks (11) are fixed on the surface of the push plate (5) in an array along its length direction.

5. A muffle furnace demagnetizing material discharge device for NdFeB magnet production according to claim 4, characterized in that: The loading platform (2) protrudes a distance from the frame (1) on one side of the muffle furnace, and the protruding part is covered with a buffer block on the side of the muffle furnace.

6. A muffle furnace demagnetizing material discharge device for NdFeB magnet production according to claim 5, characterized in that: A push rod (12) is inclinedly connected to one side surface of the frame (1), and a switch assembly (13) for controlling the drive motor (603) is sleeved and fixed on the outer surface of the push rod (12).

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