Elastic positioning device for magnetizing neodymium-iron-boron magnet

Abstract

The elastic positioning device comprises a jig plate, a magnetizing pole head, an ejector rod, a positioning plate and an elastic piece, the jig plate is arranged on the magnetizing pole head in a left-right moving mode, a plurality of magnetizing acupoints arranged front and back are formed in the jig plate, the left side edge of each magnetizing acupoint is a magnetizing reference edge, and the right side edge of each magnetizing acupoint is provided with an opening; the positioning plate is arranged on the right side of the magnetizing pole head, a plurality of positioning grooves which are arranged front and back are formed in the positioning plate, and the positioning grooves are transversely arranged to be aligned with the magnetizing acupuncture points left and right; an elastic piece is arranged in the positioning groove, the right end of the ejector rod is movably arranged in the positioning groove and abuts against the elastic piece, and the left end of the ejector rod is aligned to the opening of the magnetizing acupoint; the jig plate moves rightwards to enable the left end of the ejector rod to extend into a magnetizing acupoint to push the magnets, the ejector rod is pushed by the elastic piece to push all the magnets to abut against the magnetizing reference edge, and the problem that the magnetizing reference edge fluctuates due to the length tolerance of the magnets is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnet magnetization, and particularly relates to an elastic positioning device for magnetizing neodymium iron boron magnets. Background Technique

[0002] Neodymium iron boron magnet materials have excellent magnetic properties and are widely used in the fields of electronics, electric machinery, medical devices, toys, packaging, hardware machinery, aerospace, etc. More common ones are permanent magnet motors, speakers, magnetic separators, computer disk drives, magnetic resonance imaging equipment meters, etc. However, before the material is magnetically detected or assembled into a device with a certain function, the neodymium iron boron magnet material needs to be magnetized.

[0003] The existing magnetization method is to magnetize on the magnetization pole head. The magnetization pole head is provided with a horizontally moving jig plate and a plurality of ejector rods. The jig plate is provided with a plurality of magnetization acupoints. The magnets are magnetized within the magnetization acupoints. The ejector rods are fixed on one side of the jig plate and aligned with the magnetization acupoints. Generally, the side of the magnetization acupoint facing away from the ejector rod is used as the magnetization reference edge. Before magnetization, all magnets need to be abutted against the magnetization reference edge. When the jig plate moves towards the direction of the ejector rod, the ejector rod can push the magnet to abut against the magnetization reference edge. However, the ejector rods used in the existing technology are all rigid. There will be tolerances in the processing of the length dimensions of the magnets themselves. Different lengths of the magnets will cause the ejector rod to preferentially push the longer magnet to the magnetization reference edge, while the shorter magnet cannot reach it, resulting in the problem of fluctuations in the magnetization reference edge during magnetization, which will affect the magnetization effect. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an elastic positioning device for magnetizing neodymium iron boron magnets to solve the problem of fluctuations in the magnetization reference edge caused by the length tolerance of the magnets.

[0005] To achieve the above object, the solution of the utility model is: an elastic positioning device for magnetizing neodymium iron boron magnets, including a jig plate, a magnetization pole head, an ejector rod, a positioning plate, and an elastic member. The jig plate is arranged to move left and right on the magnetization pole head. The jig plate is provided with a plurality of magnetization acupoints arranged front and back. The left side of the magnetization acupoint is the magnetization reference edge, and the right side of the magnetization acupoint is open. The positioning plate is arranged on the right side of the magnetization pole head. The positioning plate is provided with a plurality of positioning grooves arranged front and back. The positioning grooves are arranged horizontally to be aligned with the magnetization acupoints left and right. An elastic member is arranged in the positioning groove. The right end of the ejector rod is movably arranged in the positioning groove and abuts against the elastic member. The left end of the ejector rod is aligned with the opening of the magnetization acupoint. When the jig plate moves to the right, the left end of the ejector rod extends into the magnetization acupoint to push the magnet, and the ejector rod is pushed by the elastic member to push all the magnets to abut against the magnetization reference edge.

[0006] Further, the positioning groove is located at the right part of the positioning plate. A positioning track communicating with the positioning groove is provided at the left part of the positioning plate. The positioning plate is higher than the magnetic charging pole head. The bottom surface of the positioning track is flush with the top surface of the magnetic charging pole head. The middle part of the ejector rod is movably arranged on the positioning track.

[0007] Further, a limiting pin is convexly provided on the positioning track. A limiting cross groove is provided in the middle part of the ejector rod. The pin is fitted in the limiting cross groove.

[0008] Further, the width of the positioning groove is greater than the width of the positioning track. A clamping portion extending in the front and rear directions is provided at the right end of the ejector rod. The clamping portion is in clamping fit with the left end of the positioning groove.

[0009] Further, an installation post is provided at the right end of the ejector rod. The elastic member is a spring. The left end of the spring is sleeved on the installation post. The right end of the spring abuts against the right end of the positioning groove.

[0010] Further, a cover plate is covered on the positioning plate. Positioning grooves and positioning tracks corresponding to the positioning plate up and down are provided on the bottom surface of the cover plate. The right end of the ejector rod and the spring are clamped between the cover plate and the positioning plate.

[0011] Further, a limiting plate extending downward is provided at the right end of the positioning groove on the cover plate. The limiting plate abuts against the right end of the positioning groove on the positioning plate. The right end of the spring abuts against the limiting plate.

[0012] Further, a mounting plate is provided on the right side wall of the magnetic charging pole head. The positioning plate and the cover plate are fixed on the mounting plate by bolts.

[0013] Further, the magnetic charging position is arranged on the right side of the jig plate. The left side of the jig plate is mounted on a cylinder. The cylinder drives the jig plate to move left and right.

[0014] After adopting the above scheme, the beneficial effects of the utility model are as follows:

[0015] In the utility model, the ejector rod is movably arranged on the magnetizing pole head. A positioning plate is arranged on the right side of the magnetizing pole head. A horizontally arranged positioning groove is arranged on the positioning plate. An elastic member is arranged in the positioning groove. The right end of the ejector rod is movably arranged in the positioning groove and abuts against the elastic member. The left end of the ejector rod is aligned with the opening of the magnetizing acupoint. After the jig plate moves to the right, the left end of the ejector rod extends into the magnetizing acupoint through the opening to push the magnet until the magnet is pushed to abut against the magnetizing reference edge. The jig plate stops moving to position the magnet at this position for magnetizing. In this process, while the jig plate moves to the right, the elastic member will be compressed to provide elastic force for the ejector rod, making the ejector rod an elastic ejector rod. If there is a tolerance in the length of the magnet, the expansion and contraction of the elastic member can compensate for this tolerance, so that during magnetizing, each ejector rod can push the magnet to abut against the magnetizing reference edge, thus solving the problem of the fluctuation of the magnetizing reference edge caused by the length tolerance of the magnet and ensuring the stability of the magnetizing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model Figure 1 ;

[0017] Figure 2 is a schematic diagram of the overall structure of the utility model Figure 2 ;

[0018] Figure 3 is a top view of the utility model with the cover plate removed;

[0019] Figure 4 is a perspective view of the utility model with the cover plate removed;

[0020] Figure 5 is a schematic diagram of the structure of the cover plate of the utility model.

[0021] Reference numeral description:

[0022] 1. Jig plate; 11. Magnetizing acupoint; 111. Magnetizing reference edge; 112. Opening; 2. Magnetizing pole head; 3. Ejector rod; 31. Limiting transverse groove; 32. Clamping portion; 33. Mounting post; 4. Positioning plate; 41. Positioning groove; 42. Positioning track; 421. Pin hole; 5. Elastic member; 6. Cover plate; 61. Limiting plate; 7. Mounting plate; 8. Magnet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following describes the present utility model in detail with reference to the accompanying drawings and specific embodiments.

[0024] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "middle", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0025] As Figures 1-5 shown, the present utility model provides an elastic positioning device for magnetizing neodymium iron boron magnets, including a jig plate 1, a magnetizing pole head 2, a push rod 3, a positioning plate 4, and an elastic member 5. The jig plate 1 is movably arranged left and right on the magnetizing pole head 2. A plurality of magnetizing acupoints 11 arranged front and back are provided on the jig plate 1. The magnetizing acupoints 11 are specifically arranged on the right side of the jig plate 1. The left side of the jig plate 1 is installed on a cylinder (not shown in the figure), and the jig plate 1 is pushed left and right by the cylinder. The left side edge of the magnetizing acupoint 11 is the magnetizing reference edge 111, and the right side of the magnetizing acupoint 11 is an opening 112. The positioning plate 4 is arranged on the right side of the magnetizing pole head 2. A plurality of positioning grooves 41 arranged front and back are provided on the positioning plate 4. The positioning grooves 41 are arranged horizontally to be aligned left and right with the magnetizing acupoints 11. An elastic member 5 is arranged in the positioning groove 41. The right end of the push rod 3 is movably arranged in the positioning groove 41 and abuts against the elastic member 5. The left end of the push rod 3 is aligned with the opening 112 of the magnetizing acupoint 11. To make all the magnets 8 abut against the magnetizing reference edge 111, it is necessary to control the jig plate 1 to move to the right, so that the left end of the push rod 3 extends into the magnetizing acupoint 11 through the opening 112 to push the magnet 8 until the magnet 8 is pushed to abut against the magnetizing reference edge 111, and the jig plate 1 stops moving to position the magnet 8 at this position for magnetizing. In this process, while the jig plate 1 moves to the right, the elastic member 5 will be compressed to provide elastic force for the push rod 3, making the push rod 3 an elastic push rod 3. If there is a tolerance in the length of the magnet 8, the expansion and contraction of the elastic member 5 can compensate for this tolerance, so that during magnetizing, each push rod 3 can push the magnet 8 to abut against the magnetizing reference edge 111, thus solving the problem of the fluctuation of the magnetizing reference edge 111 caused by the length tolerance of the magnet 8 and ensuring the stability of the magnetizing effect.

[0026] With key reference to Figure 3 and Figure 4, the positioning groove 41 is located in the right part of the positioning plate 4. A positioning track 42 communicating with the positioning groove 41 is provided in the left part of the positioning plate 4. The positioning track 42 is also horizontally arranged and aligned with the magnetizing acupuncture point 11. The middle part of the ejector rod 3 is movably arranged on the positioning track 42, and the positioning track 42 can limit the left - right movement of the ejector rod 3; the height of the positioning plate 4 is slightly higher than that of the magnetizing pole head 2, and the bottom surface of the positioning track 42 is flush with the top surface of the magnetizing pole head 2, so that the left end of the ejector rod 3 can be placed on the top surface of the magnetizing pole head 2 to push the magnet 8. The arrangement of the positioning groove 41 and the positioning track 42 on the positioning plate 4 does not affect the magnetizing ability of the magnetizing pole head 2.

[0027] Further, a limit pin (not shown in the figure) can be protrudingly provided on the positioning track 42 to further limit the ejector rod 3. Specifically, a pin hole 421 can be opened on the positioning track 42 to install the limit pin. A limit cross - groove 31 is provided in the middle part of the ejector rod 3, and the limit pin is fitted in the limit cross - groove 31. The cooperation between the limit pin and the cross - groove can not only prevent the ejector rod 3 from shifting back and forth, but also prevent the ejector rod 3 from slipping out of the positioning track 42 left - and - right.

[0028] Refer to Figure 4 , the width of the positioning groove 41 is greater than the width of the positioning track 42. A clamping portion 32 is provided at the right end of the ejector rod 3 and extends front - and - back. The clamping portion 32 can be clamped and matched with the left end of the positioning groove 41 to prevent the right end of the ejector rod 3 from slipping out of the positioning groove 41. An installation post 33 is provided at the right end of the ejector rod 3. The installation post 33 is arranged on the right side of the clamping portion 32 to make the right end of the ejector rod 3 in a cross - shape. The elastic member 5 is preferably a spring. The left end of the spring is sleeved on the installation post 33, and the right end of the spring abuts against the right end of the positioning groove 41. The arrangement of the installation post 33 facilitates the installation of the spring, and it is not easy for the spring and the ejector rod 3 to become loose.

[0029] Refer to Figure 2 and Figure 5, a cover plate 6 is placed on the positioning plate 4. The bottom surface of the cover plate 6 is also provided with a positioning groove 41 and a positioning track 42, and the positioning groove 41 and the positioning track 42 correspond to the positioning groove 41 and the positioning track 42 on the positioning plate 4 up and down and have the same shape. When the cover plate 6 is placed on the positioning plate 4, the right end of the ejector rod 3 and the spring will be clamped between the cover plate 6 and the positioning plate 4. This setting makes the ejector rod 3 and the spring not break away from the positioning plate 4, and the spring can also be hidden. A limiting plate 61 extending downward can be provided at the right end of the positioning groove 41 on the cover plate 6. When the cover plate 6 is closed on the positioning plate 4, the limiting plate 61 abuts against the right end of the positioning groove 41 on the positioning plate 4, and the right end of the spring abuts against the limiting plate 61. Then, during assembly, the left end of the spring is sleeved on the mounting post 33 of the ejector rod 3, and the middle and right ends of the ejector rod 3 are respectively placed into the positioning track 42 and the positioning groove 41, and the spring is also placed into the positioning groove 41. Then, the cover plate 6 is covered to install the ejector rod 3 without particularly fixing the ejector rod 3 and the spring, and the installation is relatively convenient. The installation of the positioning plate 4 and the cover plate 6 can be achieved by providing a mounting plate 7 on the right side wall of the magnetic charging pole head 2, and the positioning plate 4 and the cover plate 6 can be fixed on the mounting plate 7 by bolts.

[0030] The above are only the preferred embodiments of the present invention, and do not limit the design of this case. All equivalent changes made according to the key design of this case fall within the protection scope of this case.

Claims

1. An elastic positioning device for magnetizing NdFeB magnets, characterized in that: It includes a jig plate, a magnetizing pole head, a push rod, a positioning plate, and an elastic member. The jig plate is arranged to move left and right on the magnetizing pole head. There are multiple magnetizing acupoints arranged front and back on the jig plate. The left side of the magnetizing acupoint is the magnetizing reference edge, and the right side of the magnetizing acupoint is open. The positioning plate is arranged on the right side of the magnetizing pole head. There are multiple positioning grooves arranged front and back on the positioning plate. The positioning grooves are arranged horizontally to be aligned with the magnetizing acupoints left and right. An elastic member is arranged in the positioning groove. The right end of the push rod is movably arranged in the positioning groove and abuts against the elastic member. The left end of the push rod is aligned with the opening of the magnetizing acupoint. When the jig plate moves to the right, the left end of the push rod extends into the magnetizing acupoint to push the magnet, and the push rod is pushed by the elastic member to push all the magnets to abut against the magnetizing reference edge.

2. The elastic positioning device for magnetizing NdFeB magnets according to claim 1, wherein: The positioning groove is located in the right part of the positioning plate. The left part of the positioning plate is provided with a positioning track communicating with the positioning groove. The positioning plate is higher than the magnetizing pole head. The bottom surface of the positioning track is flush with the top surface of the magnetizing pole head. The middle part of the push rod is movably arranged on the positioning track.

3. The elastic positioning device for magnetizing NdFeB magnets according to claim 2, wherein: A limiting pin is convexly arranged on the positioning track. A limiting cross groove is arranged in the middle part of the push rod. The pin is fitted in the limiting cross groove.

4. The elastic positioning device for magnetizing NdFeB magnets according to claim 2, characterized in that: The width of the positioning groove is greater than the width of the positioning track. The right end of the push rod is provided with a clamping portion extending front and back. The clamping portion is in clamping fit with the left end of the positioning groove.

5. The elastic positioning device for magnetizing NdFeB magnets according to claim 2, wherein: The right end of the push rod is provided with a mounting post. The elastic member is a spring. The left end of the spring is sleeved on the mounting post, and the right end of the spring abuts against the right end of the positioning groove.

6. The elastic positioning device for magnetizing NdFeB magnets according to claim 5, characterized in that: A cover plate is covered on the positioning plate. The bottom surface of the cover plate is provided with positioning grooves and a positioning track corresponding to the positioning plate up and down. The right end of the push rod and the spring are clamped between the cover plate and the positioning plate.

7. An elastic positioning device for magnetizing neodymium iron boron magnets according to claim 6, characterized in that: The right end of the positioning groove on the cover plate is provided with a limiting plate extending downward. The limiting plate abuts against the right end of the positioning groove on the positioning plate. The right end of the spring abuts against the limiting plate.

8. An elastic positioning device for magnetizing NdFeB magnets as claimed in claim 6 or 7, characterized in that: An installation plate is provided on the right side wall of the magnetizing pole head. The positioning plate and the cover plate are fixed on the installation plate by bolts.

9. The elastic positioning device for magnetizing NdFeB magnets according to claim 1, wherein: The magnetizing acupoints are arranged on the right side of the jig plate. The left side of the jig plate is installed on a cylinder. The cylinder drives the jig plate to move left and right.

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