Circular magnetic steel magnetic pole determining device and circular magnetic steel magnetic pole marking equipment

Abstract

The embodiment of the utility model discloses a circular magnetic steel magnetic pole determining device and circular magnetic steel magnetic pole marking equipment. The circular magnetic steel magnetic pole determining device comprises a push-pull module, a sliding module, a bearing module, a boss module, guide magnetic steel and a guide magnetic steel fixing module, the rear end of the sliding module is connected with the push-pull module, and the push-pull module is used for controlling the sliding module to slide forwards and backwards on the boss module; the bearing module comprises a rotating shaft and a bearing capable of rotating around the rotating shaft, the rotating shaft is fixed at the front part of the sliding module, and the bearing module is used for sucking the circular magnetic steel; the front end of the sliding module is provided with a limiting part, the limiting part is arranged between the side wall and the bearing module, the limiting part is used for limiting the circular magnetic steel in the vertical direction, the tail end of the limiting part is horizontally arranged and keeps a preset distance from the upper surface of the boss module, and the limiting part is used for guaranteeing the floating effect of the circular magnetic steel and keeping the floating level. According to the invention, secondary positioning can be carried out by controlling the floating of the circular magnetic steel, so that the polarity determination and marking accuracy of the circular magnetic steel is improved.

Description

Technical Field

[0001] The utility model relates to the field of laser marking of magnetic materials, in particular to a device for determining the poles of a circular magnet and a device for laser marking the poles of a circular magnet. Background Art

[0002] For the existing device for determining and marking the poles of a circular magnet, its principle is to attract the circular magnet to be marked with a magnetic conductive material, and limit the circular magnet in the circular magnet positioning position by a positioning groove with the same radius, and etch it with a laser marking machine. Because the circular magnet needs to be limited in a fixed position to be accurately marked, when the circular magnet is attracted to the circular magnet positioning position, the frictional resistance is greater than the force for the magnet to automatically align by magnetic force, resulting in a large error in determining and marking the polarity of the circular magnet. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the problem of improving the accuracy of determining and marking the poles of a circular magnet, and provide a device for determining the poles of a circular magnet and a device for laser marking the poles of a circular magnet.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A device for determining the poles of a circular magnet includes: a push-pull module, a sliding module, a bearing module, a boss module, a guiding magnet and a guiding magnet fixing module;

[0006] The boss module is adjacent to the guiding magnet fixing module and is used for placing the circular magnet. The guiding magnet fixing module is used for fixing the guiding magnet. The guiding magnet fixing module is provided with a side wall, and the side wall can isolate the circular magnet and the guiding magnet. The side wall is provided with a circular magnet positioning part in the direction of the circular magnet, and the circular magnet positioning part is in shape fit with a part of the circular magnet to position the circular magnet;

[0007] The rear end of the sliding module is connected to the push-pull module, and the push-pull module is used for controlling the sliding module to slide forward and backward on the boss module;

[0008] The bearing module includes a rotating shaft and a bearing capable of rotating around the rotating shaft. The rotating shaft is fixed at the front part of the sliding module, and the bearing module is used for attracting the circular magnet;

[0009] A limiting part is arranged at the front end of the sliding module, and the limiting part is arranged between the side wall and the bearing module. The limiting part is used for limiting the circular magnet in the vertical direction. The end of the limiting part is horizontally arranged and keeps a predetermined distance from the upper surface of the boss module, so as to ensure the realization of the floating effect of the circular magnet and the maintenance of the floating level.

[0010] In some embodiments, the push-pull module is a push-pull quick clamp.

[0011] In some embodiments, a base plate is further included, the boss module and the guide magnetic steel fixing module are fixed to the base plate, the push-pull module is fixed to the base plate through a moving unit, and the moving unit is used to adjust the front and rear positions of the push-pull quick clamp.

[0012] In some embodiments, the predetermined distance between the end of the limiting portion and the upper surface of the boss module is: the thickness of the circular magnetic steel + 0.1 to 0.3 mm.

[0013] In some embodiments, the bearing is made of GCr15 bearing steel, and the rotating shaft is made of stainless steel.

[0014] In some embodiments, the limiting portion is made of stainless steel.

[0015] In some embodiments, the sliding module is cooperatively connected with the boss module.

[0016] The utility model also provides a circular magnetic steel magnetic pole marking device, comprising the circular magnetic steel magnetic pole determining device and a laser marking machine for circular magnetic steel magnetic pole marking.

[0017] The utility model has the following beneficial effects:

[0018] The circular magnet pole determination device of the present application can utilize the principle of opposite attraction of magnetic materials through the boss module, the guide magnet and the guide magnet fixing module. When the circular magnet is placed in the circular magnet positioning part, the opposite attraction ensures that its polarity is opposite to the polarity of the guide magnet, and the initial positioning is achieved; after the sliding module moves, the bearing module can attract the circular magnet to separate it from the circular magnet positioning part, and the limiting part can ensure that the floating effect of the circular magnet is achieved and the floating level is maintained, so that the circular magnet can be accurately positioned, and the secondary positioning improves the polarity determination and marking accuracy of the circular magnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 2. It is a structural schematic diagram of the circular magnetic steel magnetic pole determination device when the circular magnetic steel is separated from the circular magnetic steel positioning portion in the embodiment of the present utility model;

[0020] Figure 2 2 is a schematic structural diagram of a circular magnetic steel magnetic pole determination device when the circular magnetic steel is located at a circular magnetic steel positioning portion in an embodiment of the present utility model;

[0021] Figure 3 2. It is a structural schematic diagram of the circular magnetic steel magnetic pole determination device when the circular magnetic steel is separated from the circular magnetic steel positioning portion in the embodiment of the present utility model;

[0022] Figure 4It is a schematic structural diagram of a bearing module and a circular permanent magnet in an embodiment of the present utility model;

[0023] Figure 5 It is a schematic position diagram of a bearing module, a circular permanent magnet and a guiding permanent magnet in a circular permanent magnet pole determination device in an embodiment of the present utility model;

[0024] Figure 6 It is a schematic position diagram of a bearing module, a circular permanent magnet and a limiting part when the circular permanent magnet floats in an embodiment of the present utility model;

[0025] Explanation of reference numerals:

[0026] 1. Push-pull module; 2. Sliding module; 21. Limiting part; 31. Rotating shaft; 32. Bearing; 4. Boss module; 5. Guiding permanent magnet; 6. Guiding permanent magnet fixing module; 61. Circular permanent magnet positioning part; 7. Circular permanent magnet; 8. Base plate; 9. Moving unit. Detailed implementation manners

[0027] The following makes a detailed description of the implementation manners of the present utility model. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of the present utility model.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the connection can be for a fixing function or for a coupling or communicating function.

[0029] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "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 embodiments of the present utility model 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 thus cannot be construed as a limitation of the present utility model.

[0030] For the determination and marking of the poles of a circular permanent magnet, generally, the principle of attraction between opposite poles of a permanent magnet is utilized to find the corresponding polarities for marking. However, for conventional contact-type jigs, there is a relatively large deviation in polarity marking. The embodiment of the present utility model adopts a suspension-type jig, which well solves this problem.

[0031] Refer to Figures 1-6, the circular magnet pole determination device of the embodiment of the present utility model includes: a push-pull module 1, a sliding module 2, a bearing module, a boss module 4, a guiding magnet 5 and a guiding magnet fixing module 6;

[0032] The boss module 4 is adjacent to the guiding magnet fixing module 6 and is used for placing the circular magnet 7. The guiding magnet fixing module 6 is used for fixing the guiding magnet 5. The guiding magnet fixing module 6 is provided with a side wall, and the side wall can isolate the circular magnet 7 and the guiding magnet 5. The side wall is provided with a circular magnet positioning portion 61 in the direction of the circular magnet 7. The circular magnet positioning portion 61 is in shape fit with a part of the circular magnet 7 to position the circular magnet 7.

[0033] The rear end of the sliding module 2 is connected to the push-pull module 1. The push-pull module 1 is used to control the forward and backward sliding of the sliding module 2 on the boss module 4. In this embodiment, the push-pull module 1 is a push-pull type quick clamp; the sliding module 2 in this embodiment is specifically a skateboard, and the skateboard is connected to the boss in a matching manner. The push-pull end of the push-pull type quick clamp is connected to the rear end of the skateboard. The bearing module includes a rotating shaft 31 and a bearing 32 that can rotate around the rotating shaft 31. The rotating shaft 31 is fixed to the front part of the sliding module 2. The bearing module is used to attract the circular magnet 7. In this embodiment, the material of the bearing 32 is high-carbon bearing steel (GCr15 bearing steel), and the material of the rotating shaft 31 is SUS304 stainless steel;

[0034] A limiting portion 21 is provided at the front end of the sliding module 2. The limiting portion 21 is arranged between the side wall and the bearing module. The limiting portion 21 is used to limit the circular magnet 7 in the vertical direction. The end of the limiting portion 21 is horizontally arranged and keeps a predetermined distance from the upper surface of the boss module 4, which is used to ensure the realization of the floating effect of the circular magnet 7 and the maintenance of the floating level (if it floats completely, the circular magnet will flip), and the material of the limiting portion 21 is stainless steel and is non-magnetic. When the circular magnet 7 floats and rotates, the friction force between it and the circular magnet 7 is small.

[0035] The circular magnet pole determination device of this embodiment further includes a bottom plate 8. The boss module 4 and the guiding magnet fixing module 6 are fixed on the bottom plate 8. The push-pull module 1 is fixed on the bottom plate 8 through a moving unit 9. The moving unit 9 is used to adjust the front and rear positions of the push-pull type quick clamp to ensure that the magnet to be marked can be separated from the guiding magnet and can be accurately positioned. In this embodiment, the predetermined distance between the end of the limiting portion 21 and the upper surface of the boss module 4 is: the thickness of the circular magnet + 0.1 - 0.3 mm, that is, when the circular magnet 7 floats against the end of the limiting portion 21, the distance between the lower surface of the circular magnet 7 and the upper surface of the boss module 4 is 0.1 - 0.3 mm, and this distance can ensure a high marking accuracy.

[0036] This embodiment also provides a circular magnet pole marking device, which includes the above-mentioned circular magnet pole determination device and a laser marking machine for marking the poles of the circular magnet.

[0037] Reference Figures 1-2 , the white part in the figure is similar to the existing marking fixture, and the circular magnet positioning part 61 is the original marking position. The marking step is to place the circular magnet 7 on the boss. The circular magnet 7 is attracted by the opposite polarity of the guiding magnet 5 and enters the circular magnet positioning part 61, and then starts marking. Since the moment when the circular magnet 7 is sucked into the circular magnet positioning part 61 is random and cannot be adjusted by the action of the guiding magnet 5 after entering, the marking accuracy is very poor and the scrap rate reaches more than 20%. The gray part in the figure is the added part of the circular magnet pole determination device in this embodiment. The sliding module 2 in this embodiment is specifically a skateboard, and the skateboard is cooperatively connected with the boss module 4. In this embodiment, the boss of the original fixture is used as the guide rail of the skateboard. The marking position is to pull the circular magnet 7 out of the circular magnet positioning part 61, break away from the restraint of the circular magnet positioning part 61, and achieve free rotation (floating), and mark under the correction of the guiding magnet, and the marking accuracy is significantly improved, and the scrap rate is reduced to less than one-thousandth.

[0038] The precise positioning principle of the circular magnet 7 in this embodiment:

[0039] Using the principle of opposite-sex attraction of magnetic materials, when the circular magnet 7 is placed in the circular magnet positioning part 61, the opposite-sex attraction ensures that its polarity is opposite to that of the guiding magnet 5, and preliminary positioning is achieved. Then, through the movement of the skateboard, the circular magnet 7 breaks away from the circular magnet positioning part 61, achieves a floating effect, and then performs precise positioning.

[0040] Perform preliminary positioning in the circular magnet positioning part 61: The circular magnet positioning part 61 is matched with a part of the shape of the circular magnet 7. When performing preliminary positioning, the arc surface of the circular magnet positioning part 61 contacts the circular arc surface of the circular magnet 7. When the circular magnet 7 enters the circular magnet positioning part 61, the polarity deflects, but is quickly restricted by the circular magnet positioning part 61, and the resistance is greater than the deflection moment of the circular magnet 7, and no more precise self-adjustment is performed. To perform more precise self-adjustment, subsequent floating adjustment must be carried out.

[0041] Perform precise positioning through the floating effect: Reference Figures 3-6 , a bearing 32 is installed on the skateboard of this embodiment. The bearing 32 can move with the skateboard. The function of the bearing 32 is to be able to hold the circular magnet 7. When the circular magnet 7 leaves the circular magnet positioning part 61, a floating effect is achieved under the magnetic force of the guiding magnet 5 (the floating effect refers to Figure 6, when floating, there is a certain distance between the lower surface of the circular permanent magnet 7 and the upper surface of the boss module 4), and it self-corrects according to the corresponding polarity. The position of the guiding permanent magnet 5 is adjustable to ensure that the center of the magnetic force line is aligned with the magnetic center of the marking object. The circular permanent magnet 7 is tightly attracted to the bearing 32 (the outer circle is made of high-carbon bearing steel with good magnetic conductivity); in addition, there is a certain distance between the circular permanent magnet 7 and the guiding permanent magnet 5 (this distance is obtained through experiments. Experimental method: through the screw on the waist-shaped hole on the quick clamp base plate, adjust the stroke of the slide plate so that the product, that is, the direction of the circular permanent magnet, is always maintained, and there is enough placement space and a position to achieve floating), so that the magnetic attraction between the circular permanent magnet 7 and the bearing 32 is greater than the magnetic attraction between the circular permanent magnet 7 and the guiding permanent magnet 5. The slide plate moves a certain distance, and this distance does not exceed the range of the magnetic attraction of the guiding permanent magnet 5; the shaft of the bearing 32 is made of stainless steel (mainly playing a role of non-magnetic conduction), and the torque is very small. The circular permanent magnet 7 attracted to the outer ring of the bearing 32 can rotate around the axis in place. Since it is only affected by the magnetic attraction of the opposite polarity of the guiding permanent magnet 5, the polarity of the circular permanent magnet 7 points to the opposite polarity of the guiding permanent magnet 5, achieving the floating effect.

[0042] The principle of realizing the floating effect of the circular permanent magnet 7 in this embodiment is similar to the principle of the ancient compass. Place the Sinan on a very smooth plane with only point contact, and the Sinan can rotate around the contact point (the smooth point contact torque is small enough). The magnetic field of the earth is equivalent to the guiding permanent magnet 5, causing the north pole of the Sinan to deflect and attract to the south pole of the earth.

[0043] The usage method of the circular permanent magnet pole marking device in this embodiment:

[0044] The circular permanent magnet pole determining device in this embodiment is used in cooperation with a laser marking machine, and the steps are as follows:

[0045] 1. Place the circular permanent magnet pole determining device on the workbench surface of the laser marking machine, and fix it after alignment;

[0046] 2. Move the slide plate away from the circular permanent magnet positioning part 61 by moving the quick clamp handle;

[0047] 3. Place the product to be processed (circular permanent magnet 7) into the circular permanent magnet positioning part 61;

[0048] 4. Move the quick clamp handle to make the slide plate move forward, stick to the circular permanent magnet 7 and attract it;

[0049] 5. Move the quick clamp handle to separate the attracted circular permanent magnet 7 from the circular permanent magnet positioning part 61 together, and move the slide plate backward to the laser marking position;

[0050] 6. Start the marking switch of the laser marking machine to perform marking, and the marking is completed.

[0051] The above content is a further detailed description of the present utility model in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the art to which the present utility model pertains, without departing from the concept of the present utility model, several alternatives or modifications can still be made to these described embodiments, and these alternative or modified forms should all be regarded as belonging to the protection scope of the present utility model. In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present utility model and their advantages have been described in detail, it should be understood that various changes, substitutions, and alterations can be made herein without departing from the protection scope of the patent application.

Claims

1. A circular permanent magnet pole determination device, characterized in that, Comprising: A push-pull module, a sliding module, a bearing module, a boss module, a guiding magnet and a guiding magnet fixing module; The boss module is adjacent to the guiding magnet fixing module and is used for placing a circular magnet. The guiding magnet fixing module is used for fixing the guiding magnet. The guiding magnet fixing module is provided with a side wall which can isolate the circular magnet and the guiding magnet. The side wall is provided with a circular magnet positioning portion in the direction of the circular magnet. The circular magnet positioning portion is in shape fit with a part of the circular magnet to position the circular magnet; The rear end of the sliding module is connected to the push-pull module, and the push-pull module is used for controlling the sliding module to slide forward and backward on the boss module; The bearing module includes a rotating shaft and a bearing capable of rotating around the rotating shaft. The rotating shaft is fixed at the front part of the sliding module, and the bearing module is used for attracting the circular magnet; A limiting portion is provided at the front end of the sliding module, and the limiting portion is arranged between the side wall and the bearing module. The limiting portion is used for limiting the circular magnet in the vertical direction. The end of the limiting portion is horizontally arranged and keeps a predetermined distance from the upper surface of the boss module, so as to ensure the realization of the floating effect of the circular magnet and the maintenance of the floating level.

2. The circular permanent magnet pole determination device according to claim 1, wherein The push-pull module is a push-pull type quick clamp.

3. The circular permanent magnet pole determination device according to claim 1, characterized in that, It further includes a bottom plate. The boss module and the guiding magnet fixing module are fixed on the bottom plate. The push-pull module is fixed on the bottom plate through a moving unit, and the moving unit is used for adjusting the front and rear positions of the push-pull type quick clamp.

4. The circular permanent magnet pole determination device according to claim 1, wherein The predetermined distance between the end of the limiting portion and the upper surface of the boss module is: circular magnet thickness + 0.1 - 0.3 mm.

5. The circular permanent magnet pole determination device according to claim 1, wherein The bearing is made of GCr15 bearing steel, and the rotating shaft is made of stainless steel.

6. The circular permanent magnet pole determination device according to claim 1, wherein, The limiting portion is made of stainless steel.

7. The circular permanent magnet pole determination device according to claim 1, wherein The sliding module is in mating connection with the boss module.

8. A circular permanent magnet pole marking device, characterized in that, Comprising the circular magnet pole determination device according to any one of claims 1 - 7, and a laser marking machine for marking the poles of the circular magnet.

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