High-temperature-resistant high-precision columnar crystal aluminum-nickel-cobalt magnet compression molding device

Abstract

The utility model provides a high-temperature-resistant high-precision columnar crystal alnico magnet compression molding device which comprises a molding die and a lifting plate arranged at the bottom end of the molding die, a base is arranged below the molding die, and a discharging plate is detachably embedded and fixed at the bottom end of the molding die. Wherein extrusion grooves are symmetrically formed in the top end of the forming die, extrusion rods corresponding to the extrusion grooves are fixed to the two sides of the bottom end face of the lifting plate, a positioning mechanism enabling the extrusion rods to be inserted into the extrusion grooves in a matched mode is arranged at the top end of the forming die, and positioning blocks clamped to the inner wall of the forming die are elastically inserted into the two ends of the discharging plate. And after the discharging plate is separated from the forming die, the hydraulic rod drives the extrusion rod to move downwards, so that the columnar crystal aluminum-nickel-cobalt magnet in the extrusion groove is discharged from the bottom end of the forming die, and the extruded crystal aluminum-nickel-cobalt magnet is conveniently discharged through natural cooling after discharging.

Description

Technical Field

[0001] The utility model relates to the technical field of magnet pressing and forming, in particular to a high-temperature resistant and high-precision columnar crystal aluminum nickel cobalt magnet pressing and forming device. Background Art

[0002] NdFeB permanent magnet materials have been widely used in electronics, computers, automobiles, machinery, energy, medical equipment and many other fields due to their high magnetic product energy, high coercive force and high operating temperature. Sintered NdFeB permanent magnet tiles used in motors occupy an important position. The existing manufacturing process of sintered NdFeB series permanent magnet materials is as follows: raw material preparation → smelting → ingot casting → crushing and powder making → magnetic field orientation pressing into embryos → sintering → tempering → machining into tile-shaped magnets → surface treatment → testing.

[0003] Among them, during the pressing process, as the pressing depth increases, the friction between the inner wall of the mold and the powder increases exponentially, resulting in a certain stress in the outer layer of the NdFeB green body, while the stress change in the inner layer is relatively small. Due to factors such as the relative movement of the powder, there will be a stress difference between the inner and outer layers of the pressed NdFeB green body, accompanied by an uneven density distribution, which can easily cause cracks in the NdFeB green body. In the subsequent sintering, tempering and other process stages, due to shrinkage or stress release effects, the green body will produce deformations such as warping and bumps.

[0004] Patent application number 202320535202.0 discloses a forming orientation device for NdFeB magnets, including a workbench, a first bracket fixedly arranged on the top of the workbench, an adjustment groove arranged on the top surface of the workbench, a spacing adjustment device fixedly arranged in the adjustment groove, a clamping device arranged on the spacing adjustment device, and a molding device arranged on the top of the first bracket. Through the cooperation between the clamping device and the spacing adjustment device, the clamping device can clamp molds of different sizes, so that the molding device can press out workpieces of different sizes. After the clamping device clamps the mold, when the molding device presses the mold, the cooling device can be used to cool the clamping device, thereby cooling the mold, achieving rapid solidification of the mold, and making it easier to discharge the workpiece.

[0005] However, this technical solution only realizes the shrinkage and rapid discharge of the crystalline AlNiCo magnets in the mold by cooling. In actual use, the heat generated by the mold will cause the temperature of the cooling water to rise. The water needs to pass through the clamping plate and the mold to reduce the crystalline AlNiCo magnets, and the heat transfer efficiency is low. In addition, the high-temperature crystalline AlNiCo magnets are prone to cracking when the temperature drops too quickly after contacting water, resulting in low discharge efficiency and poor molding effect of the workpiece. Utility Model Content

[0006] The purpose of the utility model is to provide a high-temperature resistant and high-precision columnar crystal aluminum nickel cobalt magnet pressing and forming device in view of the shortcomings of the prior art. The positioning rod structure used to position the lifting plate cooperates with a detachable discharge plate structure to facilitate the discharge of the extruded crystal aluminum nickel cobalt magnet, thereby solving the problems of low discharge efficiency and poor forming effect of the workpiece.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature resistant and high-precision columnar crystal aluminum nickel cobalt magnet pressing and forming device, comprising a forming mold and a lifting plate arranged at the bottom end of the forming mold, a base is arranged below the forming mold, and a discharge plate is detachably embedded and fixed at the bottom end of the forming mold, wherein the top of the forming mold is symmetrically provided with extrusion grooves, and extrusion rods corresponding to the extrusion grooves are fixed on both sides of the bottom end surface of the lifting plate, wherein the top of the forming mold is provided with a positioning mechanism for making the extrusion rod fit and be inserted into the extrusion groove, and both ends of the discharge plate are elastically inserted with positioning blocks that are clamped with the inner wall of the forming mold.

[0008] Preferably, a support plate which fits in and is inserted into the forming mold is fixedly mounted on the top of the base, and a plurality of bolts are arranged in a rectangular array on the base.

[0009] Furthermore, the positioning mechanism includes a load-bearing plate fixed to the outer wall of the forming mold and positioning rods fixed to the top of the load-bearing plate in a rectangular array, and a plurality of the positioning rods are slidably inserted in the lifting plate.

[0010] Furthermore, a top plate is fixed to the top ends of the plurality of positioning rods, and a hydraulic rod connected to a lifting plate is installed at the top end of the top plate.

[0011] Furthermore, a high temperature resistant heat insulating layer is arranged inside the forming mold, and a feeding trough connected to the two extrusion grooves is opened at the top of the forming mold.

[0012] Furthermore, the top end of the discharge plate seals the two extrusion grooves, and the bottom end of the discharge plate abuts against the support plate, wherein telescopic grooves are provided at both ends of the discharge plate.

[0013] Furthermore, a positioning groove for accommodating the positioning block is symmetrically provided at the bottom end of the inner wall of the molding mold, and a button slidably inserted in the positioning groove is protruded from the outer wall of the molding mold.

[0014] Furthermore, the positioning block is slidably inserted in the telescopic slot, and a spring abutting against the positioning block is embedded in the telescopic slot.

[0015] The beneficial effects of the utility model are:

[0016] (1) The utility model has a discharging plate fixedly embedded in the bottom end of the forming die in a detachable manner, and a base and a support plate for supporting the discharging plate are arranged under the forming die. After forming and extruding, a button is pushed from the side wall of the forming die to drive the positioning block to move out of the positioning groove, thereby separating the discharging plate from the forming die. After separation, the hydraulic rod drives the extrusion rod to move downward, so that the columnar crystalline AlNiCo magnet in the extrusion groove is discharged from the bottom end of the forming die, and after being discharged, it is naturally cooled, so that the extruded crystalline AlNiCo magnet can be discharged easily.

[0017] (2) The utility model provides a load-bearing plate on the top of the forming die, and multiple positioning rods on the top of the load-bearing plate are used to position the lifting plate and the extrusion rod, so that the extrusion rod can accurately extrude and form the raw materials in the extrusion groove. At the same time, the high-temperature resistant insulation layer in the forming die improves the heat preservation effect of the raw materials in the extrusion groove.

[0018] In summary, the utility model has the advantages of being easy to discharge the extruded crystalline AlNiCo magnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the split structure of the molding die of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the molding die of the utility model;

[0022] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure in the middle.

[0023] In the figure: 1. forming mold; 2. base; 3. bolt; 4. load-bearing plate; 5. top plate; 6. hydraulic rod; 7. positioning rod; 8. support plate; 9. lifting plate; 10. extrusion rod; 11. high temperature resistant insulation layer; 12. discharge plate; 13. extrusion groove; 14. feed groove; 15. positioning groove; 16. telescopic groove; 17. spring; 18. positioning block; 19. button. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0026] Embodiment 1

[0027] like Figure 1 and Figure 2 As shown, this embodiment provides a high-temperature resistant and high-precision columnar crystal aluminum nickel cobalt magnet pressing and forming device, including a forming mold 1 and a lifting plate 9 arranged at the bottom end of the forming mold 1, a base 2 is arranged below the forming mold 1, and a discharge plate 12 is detachably embedded and fixed at the bottom end of the forming mold 1, wherein the top of the forming mold 1 is symmetrically provided with extrusion grooves 13, and both sides of the bottom end surface of the lifting plate 9 are fixed with extrusion rods 10 corresponding to the extrusion grooves 13, wherein the top of the forming mold 1 is provided with a positioning mechanism for making the extrusion rod 10 fit and plug into the extrusion groove 13, and both ends of the discharge plate 12 are elastically plugged with positioning blocks 18 that are clamped with the inner wall of the forming mold 1.

[0028] A support plate 8 that fits in the molding die 1 is fixedly installed on the top of the base 2, and a plurality of bolts 3 are arranged on the base 2 in a rectangular array. When in use, the base 2 is kept fixed on a load-bearing device such as a desktop by the bolts 3. The positioning mechanism includes a load-bearing plate 4 fixed to the outer wall of the molding die 1 and positioning rods 7 fixed to the top of the load-bearing plate 4 in a rectangular array. The plurality of positioning rods 7 are slidably inserted in the lifting plate 9. The plurality of positioning rods 7 at the top of the load-bearing plate 4 position the lifting plate 9 and the extrusion rod 10, so that the extrusion rod 10 accurately extrude and mold the raw materials in the extrusion groove 13. A top plate 5 is fixed on the top of the plurality of positioning rods 7. A hydraulic rod 6 connected to the lifting plate 9 is installed on the top of the top plate 5. A high-temperature resistant heat-insulating layer 11 is arranged inside the molding die 1, and a feed trough 14 connected to the two extrusion grooves 13 is opened at the top of the molding die 1. The high-temperature resistant heat-insulating layer 11 in the molding die 1 improves the heat preservation effect of the raw materials in the extrusion groove 13.

[0029] Embodiment 2

[0030] like Figure 3 and Figure 4 As shown, the components that are the same as or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The difference between the second embodiment and the first embodiment is that: the top of the discharge plate 12 seals the two extrusion grooves 13, and the bottom end of the discharge plate 12 abuts against the support plate 8, wherein both ends of the discharge plate 12 are provided with telescopic grooves 16, and the bottom end of the inner wall of the molding die 1 is symmetrically provided with positioning grooves 15 for accommodating the positioning block 18, and the outer wall of the molding die 1 is protrudingly provided with a button 19 that is slidably inserted in the positioning groove 15, and the positioning block 18 is slidably inserted in the telescopic groove 16, and the telescopic groove 16 is embedded with a spring 17 that abuts against the positioning block 18. After molding and extrusion, the button 19 is pushed from the side wall of the molding die 1 to drive the positioning block 18 to move out of the positioning groove 15, thereby separating the discharge plate 12 from the molding die 1, and after separation, the hydraulic rod 6 drives the extrusion rod 10 to move downward, so that the columnar crystal aluminum nickel cobalt magnet in the extrusion groove 13 is discharged from the bottom end of the molding die 1 and is naturally cooled after discharge.

[0031] Working steps

[0032] Step 1: When in use, insert the discharge plate 12 into the bottom end of the forming mold 1, and the springs 17 in the telescopic grooves 16 at both ends of the discharge plate 12 push the positioning block 18 to fit in the positioning groove 15, so that the discharge plate 12 is fixed at the bottom end of the forming mold 1, and the forming mold 1 is installed on the base 2. The support plate 8 at the top of the base 2 is embedded in the forming mold 1 and contacts the discharge plate 12. After the raw material is put into the extrusion groove 13 along the feed groove 14, the hydraulic rod 6 is started to make the extrusion rod 10 extrude the raw material. After the extrusion, the button 19 is pushed from the side wall of the forming mold 1 to drive the positioning block 18 to move out of the positioning groove 15, so that the discharge plate 12 is separated from the forming mold 1, and after separation, the hydraulic rod 6 drives the extrusion rod 10 to move downward, so that the columnar crystal aluminum nickel cobalt magnet in the extrusion groove 13 is discharged from the bottom end of the forming mold 1, and after discharge, it is naturally cooled, so that the extruded crystal aluminum nickel cobalt magnet is convenient to discharge.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-temperature resistant and high-precision columnar crystal aluminum nickel cobalt magnet pressing and forming device, comprising a forming mold and a lifting plate arranged at the bottom of the forming mold, characterized in that: A base is provided below the forming mold, and a discharge plate is detachably embedded and fixed at the bottom end of the forming mold, wherein extrusion grooves are symmetrically provided at the top end of the forming mold, and extrusion rods corresponding to the extrusion grooves are fixed on both sides of the bottom end surface of the lifting plate, wherein a positioning mechanism for making the extrusion rods fit and plug into the extrusion grooves is provided at the top end of the forming mold, and positioning blocks that are elastically plugged into the inner wall of the forming mold are provided at both ends of the discharge plate.

2. A high temperature resistant and high precision columnar crystal AlNiCo magnet pressing and forming device according to claim 1, characterized in that: A support plate which is inserted into the forming mold is fixedly mounted on the top of the base, and a plurality of bolts are arranged in a rectangular array on the base.

3. A high temperature resistant and high precision columnar crystal AlNiCo magnet pressing and forming device according to claim 1, characterized in that: The positioning mechanism comprises a load-bearing plate fixed on the outer wall of the forming mold and positioning rods fixed on the top of the load-bearing plate in a rectangular array, and a plurality of the positioning rods are slidably inserted in the lifting plate.

4. A high temperature resistant and high precision columnar crystal AlNiCo magnet pressing and forming device according to claim 3, characterized in that: A top plate is fixed to the top ends of the plurality of positioning rods, and a hydraulic rod connected to a lifting plate is installed at the top end of the top plate.

5. The high temperature resistant and high precision columnar crystal AlNiCo magnet pressing and forming device according to claim 1 is characterized in that: The interior of the forming mold is provided with a high temperature resistant heat insulation layer, and the top of the forming mold is provided with a feeding trough connected with the two extrusion grooves.

6. A high temperature resistant and high precision columnar crystal AlNiCo magnet pressing and forming device according to claim 1, characterized in that: The top end of the discharge plate seals the two extrusion grooves, and the bottom end of the discharge plate abuts against the support plate, wherein telescopic grooves are provided at both ends of the discharge plate.

7. A high temperature resistant and high precision columnar crystal AlNiCo magnet pressing and forming device according to claim 6, characterized in that: The bottom end of the inner wall of the molding die is symmetrically provided with positioning grooves for accommodating the positioning blocks, and the outer wall of the molding die is protrudingly provided with buttons which are slidably inserted in the positioning grooves.

8. A high temperature resistant and high precision columnar crystal AlNiCo magnet pressing and forming device according to claim 7, characterized in that: The positioning block is slidably inserted in the telescopic slot, and a spring abutting against the positioning block is embedded in the telescopic slot.

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