Laser etching magnetizing jig for neodymium iron boron magnetic steel and laser etching machine

Abstract

The utility model discloses a laser etching magnetizing jig for neodymium iron boron magnetic steel, which relates to the technical field of laser etching magnetizing, and comprises at least one jig plate, a plurality of placing grooves are distributed on the jig plate, each placing groove is used for placing one magnetic steel, and the to-be-magnetized surface of the magnetic steel is arranged on the opening side facing the placing groove; the jig plate can be placed on the working face of the laser carving machine, a penetrating groove is formed between every two adjacent containing grooves in the laser carving direction in the jig plate, and the penetrating grooves penetrate through the jig plate in the thickness direction of the jig plate. According to the laser etching magnetizing jig for the neodymium iron boron magnetic steel, the neodymium iron boron magnetic steel can be conveniently arranged, magnetized and marked, and the production efficiency is improved. The utility model further provides a laser engraving machine.

Description

Technical Field

[0001] This utility model relates to the field of laser engraving and magnetization technology, and in particular to a laser engraving and magnetization fixture and laser engraving machine for neodymium iron boron magnets. Background Technology

[0002] Neodymium iron boron (NdFeB) magnets possess advantages such as high remanence, high coercivity, and long-term stable magnetism, making them widely used in industries such as manufacturing, automotive, and aerospace. For example, in some assembly environments using NdFeB magnets, the pole face of the magnet is also the exposed surface. To meet this assembly requirement, the magnets need to be marked on this exposed surface (the surface to be magnetized) using laser engraving before leaving the factory. Simultaneously, the magnetization process on this surface uniformly magnetizes it to either the N or S pole.

[0003] In traditional processes, magnetization is first performed using a magnetizer. After magnetization, the orientation of the magnets is manually adjusted before laser engraving. However, this method has several problems. First, the magnets attract each other due to instantaneous magnetization during magnetization, leading to breakage. Second, the N and S poles on both sides of the magnets are not fixed after magnetization and need to be manually aligned according to their polarity. Finally, manually adjusting the orientation during laser engraving requires a large amount of manpower, resulting in high labor intensity and low efficiency. Misalignment of laser engraving marks can occur due to uneven arrangement, leading to increased waste and making it difficult to filter by the naked eye. Utility Model Content

[0004] The purpose of this invention is to provide a laser engraving and magnetizing fixture and laser engraving machine for neodymium iron boron magnets, so as to solve the problems existing in the prior art, facilitate the arrangement and magnetization marking of neodymium iron boron magnets, and improve production efficiency.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a laser engraving and magnetizing fixture for neodymium iron boron magnets, including at least one fixture plate. The fixture plate has multiple placement slots distributed on it, and each placement slot is used to place a magnet. The magnet to be magnetized is placed on the open side facing the placement slot. The fixture plate can be placed on the working surface of a laser engraving machine, and a through slot is provided between two adjacent placement slots along the laser engraving direction on the fixture plate. The through slot penetrates the fixture plate along its thickness direction.

[0007] Preferably, the fixture plate has multiple rows of placement slots distributed along the direction parallel to the laser engraving, and each row has multiple placement slots; each row is provided with a through slot that connects multiple placement slots along the direction of laser engraving.

[0008] Preferably, the depth of each placement groove is not less than the dimension of the magnet in the depth direction of the placement groove.

[0009] Preferably, the open side edge of each of the placement slots is chamfered.

[0010] Preferably, the fixture plates are provided in multiple ways, and the multiple fixture plates can be stacked together.

[0011] Preferably, each of the fixture plates has a positioning protrusion on one side and a positioning groove on the other side of the fixture plate opposite to the positioning protrusion; when multiple fixture plates are stacked, the positioning protrusion on the fixture plate cooperates with the positioning groove on the adjacent fixture plate, or the positioning groove cooperates with the positioning protrusion on the adjacent fixture plate.

[0012] Preferably, it further includes a jig box having a receiving slot with an opening on one side for accommodating at least one of the jig plates.

[0013] Preferably, the inner wall of the receiving groove is provided with a limiting slide groove, the fixture plate is placed in the receiving groove, and the limiting slide groove can slide and cooperate with the positioning protrusion.

[0014] This utility model also provides a laser engraving machine, including a working surface, a processing mechanism and at least one positioning baffle. The working surface is provided with a jig plate for laser engraving and magnetizing a neodymium iron boron magnet as described above. The plurality of placement slots of the jig plate face upward. The positioning baffle is disposed on the working surface and can abut against the edge of the jig plate. The processing mechanism is used to laser engrave the magnet on the jig plate.

[0015] Preferably, multiple positioning baffles are provided and detachably mounted on the working surface, and the multiple positioning baffles can abut against different positions around the jig plate.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] The laser engraving and magnetizing fixture for neodymium iron boron magnets provided by this utility model has multiple placement slots distributed on the fixture plate. Before laser engraving and magnetization, the magnets are first placed in the placement slots with the magnetizable side facing up. Then, the multiple magnets on the fixture plate are laser engraved and magnetized. During the magnetization process, there is no breakage caused by instantaneous magnetization and mutual attraction. After magnetization, there is no need to manually arrange the magnets according to their polarity. Moreover, the fixture plate arranges and fixes the multiple magnets, eliminating the need for manual placement. During laser engraving, there is no problem of misalignment of laser markings due to disordered arrangement. This facilitates the arrangement and magnetization marking of neodymium iron boron magnets, improving production efficiency. Furthermore, by setting a through slot between two adjacent placement slots along the laser engraving direction on the fixture plate, the light source will not affect the fixture plate itself during laser engraving, thus extending the service life of the fixture plate.

[0018] This utility model also provides a laser engraving machine, which arranges and fixes multiple magnets using a fixture plate, eliminating the need for manual arrangement and preventing misalignment of laser engraving marks due to disordered arrangement. This facilitates the arrangement and laser engraving of neodymium iron boron magnets, improving production efficiency. Furthermore, by providing a through groove between two adjacent placement slots along the laser engraving direction on the fixture plate, the light source will not affect the fixture plate itself during laser engraving, thus extending the service life of the fixture plate. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A top view of the fixture plate provided in Embodiment 1;

[0021] Figure 2 A bottom view of the fixture plate provided in Embodiment 1;

[0022] Figure 3 This is a schematic diagram showing the jig plate placed in the jig box provided in Embodiment 1;

[0023] Figure 4 This is a schematic diagram of a magnet;

[0024] Figure 5 This is a schematic diagram of a fixture plate placed on a laser engraving machine as provided in Example 2.

[0025] In the diagram: 1-Jig plate; 11-Placement slot; 12-Through slot; 13-Positioning protrusion; 14-Positioning groove; 2-Laser engraving machine; 21-First baffle; 22-Second baffle; 23-Processing mechanism; 3-Jig box; 31-Accommodation slot; 32-Limiting slide; 4-Magnet; 41-Magnetic surface to be filled; 42-Laser engraving mark. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The purpose of this invention is to provide a laser engraving and magnetizing fixture and laser engraving machine for neodymium iron boron magnets, so as to solve the problems existing in the prior art, facilitate the arrangement and magnetization marking of neodymium iron boron magnets, and improve production efficiency.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] This embodiment provides a laser-engraved magnetizing fixture for neodymium iron boron magnets. Please refer to [link to relevant documentation]. Figures 1-4 The fixture includes at least one fixture plate 1, on which a plurality of placement slots 11 are distributed. Each placement slot 11 is used to place a magnet 4. The magnet 4 has its magnetized surface 41 facing the open side of the placement slot 11. The fixture plate 1 can be placed on the working surface of the laser engraving machine 2. A through slot 12 is provided between two adjacent placement slots 11 along the laser engraving direction on the fixture plate 1. The through slot 12 penetrates the fixture plate 1 along the thickness direction of the fixture plate 1.

[0031] By distributing multiple placement slots 11 on the fixture plate 1, before laser engraving and magnetization, the magnets 4 with their magnetized surfaces 41 facing upwards are placed in each placement slot 11. Then, the multiple magnets 4 on the fixture plate 1 are laser engraved and magnetized. During the magnetization process, there is no breakage caused by instantaneous magnetization and mutual attraction. After magnetization, there is no need to manually arrange them according to their polarity. Furthermore, the fixture plate 1 arranges and fixes the multiple magnets 4, eliminating the need for manual placement. During laser engraving, there is no problem of misalignment of the laser engraving mark 42 due to disordered arrangement. This facilitates the arrangement and magnetization of neodymium iron boron magnets, improving production efficiency. Moreover, by setting a through slot 12 between two adjacent placement slots 11 along the laser engraving direction on the fixture plate 1, the light source will not affect the fixture plate 1 itself during laser engraving, thus extending the service life of the fixture plate.

[0032] The placement slot 11 of the fixture plate 1 is matched with the shape of the required magnet 4. The magnet 4 enters the placement slot 11 above the fixture plate 1, which can screen the fixture plate 1. After screening, the surface facing the upper side of the fixture plate 1 is the magnetized surface 41, which facilitates the subsequent magnetization and laser engraving of the magnetized surface 41, so that the exposed surface can be determined as N pole or S pole by the laser engraving mark 42.

[0033] In the optional solutions of this embodiment, a more preferred option is described in the following description: Figure 1The fixture plate 1 has multiple rows of placement slots 11 distributed along the laser engraving direction, and each row has multiple placement slots 11, so that multiple magnets 4 are distributed in multiple placement slots 11, improving production efficiency. Each row is provided with a through slot 12 that connects multiple placement slots 11 along the laser engraving direction. When the laser engraving machine 2 engraves each row of magnets 4, the light source is along the through slot 12, so that the laser engraving mark 42 of each laser-engraved magnet 4 is in the same corresponding area of ​​the placement slot 11, solving the problem of misalignment of laser engraving marks and ensuring the consistency of the mark position on the magnet surface 41 to be filled with magnets 4. In addition, the fixture plate 1 is usually made of photosensitive resin and cannot be in direct contact with the laser engraving laser, so it is necessary to set the through slot 12 to avoid the laser during laser engraving and eliminate the risk of fire and high temperature deformation of the fixture plate 1.

[0034] In the optional scheme of this embodiment, more preferably, the depth of each placement groove 11 is not less than the dimension of the magnet 4 in the depth direction of the placement groove 11; further, the depth of the placement groove 11 is the same as the dimension of the magnet 4 in the depth direction of the placement groove 11, so that the magnet 4 is flush with the placement groove 11, which facilitates the movement of other magnets 4 on the upper surface of the fixture plate 1 without obstruction, improves the movement efficiency, and thus improves the efficiency of neodymium iron boron magnets entering the placement groove 11. At the same time, it facilitates the stacking operation of multiple fixture plates 1 filled with magnets 4, so that there are no gaps between the stacked fixture plates 1, which facilitates entry into the receiving groove 31 of the fixture box 3.

[0035] In the optional scheme of this embodiment, it is more preferred that the open side edge of each placement slot 11 is provided with a chamfer, so that the magnet 4 can freely enter the placement slot 11 during the movement.

[0036] In the optional scheme of this embodiment, more preferably, multiple jig plates 1 are provided, and the multiple jig plates 1 can be stacked. The multiple jig plates 1 are stacked and magnetized at the same time to improve the magnetization efficiency.

[0037] In the optional solutions of this embodiment, a more preferred option is described in the following description: Figure 1 and Figure 2 Each fixture plate 1 has a positioning protrusion 13 on one side and a positioning groove 14 on the other side opposite to the positioning protrusion 13. When multiple fixture plates 1 are stacked, the positioning protrusion 13 on the fixture plate 1 cooperates with the positioning groove 14 on the adjacent fixture plate 1, or the positioning groove 14 cooperates with the positioning protrusion 13 on the adjacent fixture plate 1. Specifically, multiple positioning protrusions 13 are provided on the upper side edge of the fixture plate 1, and multiple positioning grooves 14 opposite to the positioning protrusions 13 are provided on the lower side of the fixture plate 1, which facilitates positioning during the stacking operation.

[0038] In the optional solutions of this embodiment, a more preferred option is described in the following description: Figure 3The laser engraving and magnetizing fixture for neodymium iron boron magnets provided in this embodiment also includes a fixture box 3. The fixture box 3 has a receiving groove 31 with an opening on one side. The receiving groove 31 is used to receive at least one fixture plate 1. Further, it can receive multiple fixture plates 1. The fixture box 3 is used to complete the overall magnetization operation of multiple filled magnets 4, thus satisfying the batch laser engraving and magnetizing operation of magnets 4.

[0039] In the optional scheme of this embodiment, more preferably, the inner wall of the receiving groove 31, i.e. the inner top wall, is provided with a limiting slide groove 32. The fixture plate 1 is placed in the receiving groove 31. The limiting slide groove 32 can slide and cooperate with the positioning protrusion 13, so that the fixture plate 1 can slide in and out of the receiving groove 31 and be positioned and fixed in the receiving groove 31.

[0040] Furthermore, the length and width of the receiving groove 31 are slightly larger than the length and width of the jig plate 1, allowing the stacked jig plate 1 to freely enter the receiving groove 31. The depth of the receiving groove 31 is slightly less than the thickness of the stacked jig plates 1, facilitating the removal of the stacked jig plates 1 after magnetization. The entire assembly is placed into the magnetization coil of the magnetizer for magnetization, completing the magnetization operation of the neodymium iron boron magnet 4. The magnetization direction of the surface 41 to be magnetized of the magnet 4 is aligned with the N pole direction, ensuring the consistency of the magnetic pole orientation of the neodymium iron boron magnet 4. Figure 4 A laser-engraved mark 42 is left on the surface 41 to be filled with magnets at the position shown in the figure, so as to facilitate direct identification of the polarity of the magnet 4 during assembly and use after it leaves the factory.

[0041] Example 2

[0042] This embodiment provides a laser engraving machine 2, such as Figure 5 As shown, the fixture includes a working surface, a processing mechanism 23, and at least one positioning baffle. A fixture plate 1 with a laser engraving and magnetizing fixture of neodymium iron boron magnet 4 as in Embodiment 1 is placed on the working surface. Multiple placement slots 11 of the fixture plate 1 face upward. The positioning baffle is set on the working surface and can abut against the edge of the fixture plate 1 to position the fixture plate 1. The processing mechanism 23 is used to laser engrave the magnet 4 on the fixture plate 1. The processing mechanism 23 can be a laser light source.

[0043] More preferably, multiple positioning baffles are provided, which can be detachably installed on the working surface. The multiple positioning baffles can abut against different positions around the jig plate 1. Specifically, two baffles are provided, namely the first baffle 21 and the second baffle 22, which abut against the two edges of the jig plate 1 respectively for limiting.

[0044] It should be noted that the other structures of the laser engraving machine 2 are conventional and will not be described in detail here.

[0045] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A laser-engraved magnetizing fixture for neodymium iron boron magnets, characterized in that: The fixture includes at least one fixture plate (1), on which a plurality of placement slots (11) are distributed. Each placement slot (11) is used to place a magnet (4). The magnet (4) to be magnetized (41) is placed on the open side facing the placement slot (11). The fixture plate (1) can be placed on the working surface of a laser engraving machine (2). A through slot (12) is provided between two adjacent placement slots (11) along the laser engraving direction on the fixture plate (1). The through slot (12) penetrates the fixture plate (1) along the thickness direction of the fixture plate (1).

2. The laser-engraved magnetizing fixture for neodymium iron boron magnets according to claim 1, characterized in that: The fixture plate (1) has multiple rows of placement slots (11) distributed along the laser engraving direction, and each row has multiple placement slots (11); each row is provided with a through slot (12) that connects multiple placement slots (11) along the laser engraving direction.

3. The laser-engraved magnetizing fixture for neodymium iron boron magnets according to claim 1, characterized in that: The depth of each of the placement slots (11) is not less than the dimension of the magnet (4) in the depth direction of the placement slot (11).

4. The laser-engraved magnetizing fixture for neodymium iron boron magnets according to claim 1, characterized in that: Each of the placement slots (11) has a chamfered edge on its open side.

5. The laser-engraved magnetizing fixture for neodymium iron boron magnets according to claim 1, characterized in that: The fixture plate (1) is configured as a plurality of such fixture plates (1), and the plurality of fixture plates (1) can be stacked together.

6. The laser-engraved magnetizing fixture for neodymium iron boron magnets according to claim 5, characterized in that: Each of the fixture plates (1) has a positioning protrusion (13) on one side and a positioning groove (14) on the other side opposite to the positioning protrusion (13). When multiple fixture plates (1) are stacked, the positioning protrusion (13) on the fixture plate (1) cooperates with the positioning groove (14) on the adjacent fixture plate (1), or the positioning groove (14) cooperates with the positioning protrusion (13) on the adjacent fixture plate (1).

7. The laser-engraved magnetizing fixture for neodymium iron boron magnets according to claim 6, characterized in that: It also includes a jig box (3) having a receiving groove (31) with an opening on one side, the receiving groove (31) for receiving at least one of the jig plates (1).

8. The laser-engraved magnetizing fixture for neodymium iron boron magnets according to claim 7, characterized in that: The inner wall of the receiving groove (31) is provided with a limiting slide groove (32), the fixture plate (1) is placed in the receiving groove (31), and the limiting slide groove (32) can slide with the positioning protrusion (13).

9. A laser engraving machine, characterized in that: The fixture includes a working surface, a processing mechanism (23), and at least one positioning baffle. The working surface is provided with a fixture plate (1) for laser engraving and magnetizing a neodymium iron boron magnet (4) as described in any one of claims 1-8. The plurality of placement slots (11) of the fixture plate (1) face upward. The positioning baffle is disposed on the working surface and is capable of abutting against the edge of the fixture plate (1). The processing mechanism (23) is used to laser engrave the magnet (4) on the fixture plate (1).

10. The laser engraving machine according to claim 9, characterized in that: Multiple positioning baffles are provided and can be detachably installed on the working surface. The multiple positioning baffles can abut against different positions around the jig plate (1).

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