Modularized linear motor iron core

Abstract

The utility model is suitable for the technical field, and provides a modularized linear motor iron core, which comprises a first stator iron sheet and a second stator iron sheet, is integrally a straight-strip-shaped metal belt, and is provided with a plurality of yoke parts and a plurality of tooth parts which protrude along one side of the yoke parts along the length direction of the first stator iron sheet and the second stator iron sheet, the first stator iron sheets and the second stator iron sheets are alternately laminated to form a straight-bar stator iron core structure, the uppermost end and the lowermost end of the straight-bar stator iron core structure are the first stator iron sheets, and the side faces of yoke parts at the two ends of each first stator iron sheet are provided with a convex part and a concave part allowing the convex part to be inserted respectively. The convex parts and the concave parts are the same in shape and size, so that when the stator core structure is spliced, the convex parts can extend into the concave parts and are matched with each other; according to the utility model, the convex parts and the concave parts are respectively arranged between the two adjacent iron cores, so that splicing is facilitated, and the plurality of stator punching sheet monomers are connected according to a straight-row-shaped structure, so that the stator iron core punching sheets are convenient to arrange when being made of materials, and the utilization rate of the materials can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stator cores, and in particular relates to a modular linear motor core. Background Art

[0002] A linear motor is a transmission device that converts electrical energy directly into linear motion without any intermediate conversion mechanism. It can be thought of as a rotating motor cut radially and flattened into a flat surface. The main functions of the motor laminations are to conduct magnetic flux, secure the coils, and dissipate heat.

[0003] The existing spliced ​​stator punching sheets are generally of arc-shaped structure, which will affect the arrangement of the punching sheet blanking, resulting in low utilization rate of raw materials; at the same time, the stator core is plastic-sealed to form a stator frame, and some fixing structures need to be set on the stator frame to fix the terminal box. Not only is the structure complex and the installation is also more troublesome, but the terminal box fixing effect is also not ideal, and the terminal box is easily offset during the subsequent plastic sealing process; at the same time, this method also requires pre-setting the starting position of the winding group, which increases the difficulty of winding. Utility Model Content

[0004] The utility model provides a modular linear motor core, aiming to solve the problems of inconvenient installation of a terminal box, low material utilization and great production difficulty.

[0005] The present invention is implemented as follows: a modular linear motor core includes a first stator iron sheet and a second stator iron sheet, which are a straight metal strip as a whole and have a plurality of yokes and a plurality of teeth protruding along one side of the yoke formed along the length direction thereof. The first stator iron sheet and the second stator iron sheet are alternately stacked to form a straight stator core structure, the top and bottom ends of the straight stator core structure are both the first stator iron sheet, and the side surfaces of the yokes at both ends of the first stator iron sheet are respectively provided with a convex portion and a concave portion for inserting the convex portion, and the convex portion and the concave portion are identical in shape and size, so that when the stator core structure is spliced, the convex portion can extend into the concave portion and fit into each other.

[0006] Preferably, the end surface of the convex portion is semicircular, and the semicircular shape can facilitate the insertion between the convex portion and the concave portion.

[0007] Preferably, the insertion end of the protrusion is provided with a second groove, and a ball is movably installed inside the second groove.

[0008] Preferably, the tooth portion includes a winding portion and a limiting portion, the winding portion is fixedly connected to the yoke portion, and the end surface of the limiting portion away from the yoke portion is an arc surface, and the arc surface is provided with a protrusion.

[0009] Preferably, the two side surfaces of the protrusion are parallel to each other, the end surface of the protrusion away from the yoke portion and the two side surfaces of the protrusion are perpendicular to each other, and the central axis of the protrusion is aligned with the central axis of the tooth portion.

[0010] Preferably, the protrusion protrudes downward in a direction away from the yoke, and the protrusion is located at the center of the arc surface.

[0011] Preferably, a through hole is provided on the tooth portion, a groove 1 is provided on the upper end surface of the yoke portion, the center axis of the groove 1 is aligned with the center axis of the tooth portion, and a punching I-shaped groove is provided on the yoke portion.

[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0013] 1. By providing a convex portion 122 and a concave portion 121 between two adjacent iron cores, it is easy to splice. A plurality of stator punching sheets are connected in a straight row structure, so that the stator core punching sheets are easy to arrange when the material is made, thereby improving the utilization rate of the material. By providing a convex portion 122 and a concave portion 121 between two adjacent iron cores, a plurality of stator core punching sheets are matched with each convex portion 122 and concave portion 121, which is easy to splice. A plurality of stator punching sheets are connected in a straight row structure, so that the stator core punching sheets are easy to arrange when the material is made, thereby improving the utilization rate of the material. The motor adopts such a stator, with low motor loss and high efficiency, reduced motor noise and effectively reduced stator and rotor slot positioning torque. A protrusion 113 is provided on the inner side of the stator core punching sheet to enhance the breath magnetic field and overcome the magnetic field depression in the middle of the rotor, thereby ensuring the sinusoidality of the breath magnetic field, improving motor efficiency and reducing motor noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall three-dimensional diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 3 This utility model Figure 2 Schematic diagram of the structure enlarged at point A in the middle.

[0017] In the figure: 1. First stator iron sheet; 11. Tooth portion; 111. Winding portion; 112. Limiting portion; 113. Protrusion; 114. Arc surface; 12. Yoke; 121. Concave portion; 122. Protrusion; 123. Ball; 124. Groove 2; 2. Second stator iron sheet; 3. Punched I-slot; 4. Through hole; 5. Groove 1. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0019] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0020] The present invention provides a modular linear motor core. Figure 1-3 As shown, it includes a first stator iron sheet 1 and a second stator iron sheet 2, which are a straight strip of metal strip as a whole. A plurality of yokes 12 and a plurality of teeth 11 protruding from one side of the yoke 12 are formed along the length direction of the stator iron sheet. The first stator iron sheet 1 and the second stator iron sheet 2 are alternately stacked to form a straight stator core structure. The top and bottom ends of the straight stator core structure are both the first stator iron sheet 1. The side surfaces of the yokes 12 at both ends of the first stator iron sheet 1 are respectively provided with a protrusion 122 and a recess 121 that allows the protrusion 122 to be inserted. The protrusion 122 and the recess 121 have the same shape and size, so that when the stator core structure is spliced, the protrusion 122 can extend into the recess 121 and fit together.

[0021] It should be noted that since the existing spliced ​​stator punching sheets are generally arc-shaped structures, this will affect the arrangement of the punching sheets, resulting in low utilization of raw materials; at the same time, the stator core is plastic-sealed to form a stator frame, and some fixed structures need to be set on the stator frame to fix the terminal box. Not only is the structure complex and the installation is also more troublesome, but the terminal box fixing effect is also not ideal, and the terminal box is easy to shift during the subsequent plastic-sealing process; at the same time, this method also requires pre-setting the starting position of the winding group, which increases the difficulty of winding. Therefore, in order to solve the problems of inconvenient installation, low material utilization and high production difficulty of the existing terminal box, this solution provides a convex portion 122 and a concave portion 121 between two adjacent cores for easy splicing. Multiple stator punching sheet units are connected in a straight-row structure, so that the stator core punching sheets are easy to arrange when the material is in place, thereby improving the utilization of the material.

[0022] Specifically, in this embodiment, this solution is mainly provided with a convex portion 122 and a concave portion 121 between two adjacent iron cores, which is convenient for splicing, and a plurality of stator punching sheets are connected in a straight row structure, so that the stator core punching sheets are easy to arrange when the material is made, thereby improving the utilization rate of the material. By providing a convex portion 122 and a concave portion 121 between two adjacent iron cores, so that the plurality of stator core punching sheets can be matched with each convex portion 122 and concave portion 121, it is convenient for splicing, and a plurality of stator punching sheets are connected in a straight row structure, so that the stator core punching sheets are easy to arrange when the material is made, thereby improving the utilization rate of the material. The motor adopts such a stator. In order to achieve low motor loss and high efficiency, reduce motor noise and effectively reduce the stator and rotor tooth slot positioning torque, a protrusion 113 is provided on the inner side of the stator core punching sheet to enhance the breath magnetic field and overcome the magnetic field depression in the middle of the rotor, thereby ensuring the sinusoidal degree of the breath magnetic field, improving motor efficiency and reducing motor noise. A groove 5 is provided on the outer end face of the stator punching sheet monomer to fix the plug-in terminal box, thereby replacing the traditional terminal box installation method, greatly facilitating the installation of the terminal box, and effectively improving the connection firmness of the terminal box; adopting this structure, the installation position of the plug-in terminal box can be flexibly adjusted, and there is no need to pre-set the winding starting position of the winding group, which is convenient for winding.

[0023] In a further preferred embodiment of the present invention, Figure 2-3 As shown, the end surface of the convex portion 122 is semicircular, and the semicircular shape can facilitate the insertion between the convex portion 122 and the concave portion 121.

[0024] In this embodiment, by providing the convex portion 122 and the concave portion 121 , a plurality of stator core punching sheets are formed into a ring shape through the cooperation of the convex portion 122 and the concave portion 121 , which is convenient for splicing.

[0025] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the insertion end of the protrusion 122 is provided with a second groove 124 , and a ball 123 is movably installed inside the second groove 124 .

[0026] In this embodiment, the provided balls 123 and the inner wall of the recess 121 roll and fit together, thereby reducing the friction between the convex portion 122 and the recess 121 and reducing the wear of the convex portion 122 due to friction.

[0027] In a further preferred embodiment of the present invention, Figure 2-3 As shown, the tooth portion 11 includes a winding portion 111 and a limiting portion 112 . The winding portion 111 is fixedly connected to the yoke 12 . The end surface of the limiting portion 112 away from the yoke 12 is an arc surface 114 , and the arc surface 114 is provided with a protrusion 113 .

[0028] In this embodiment, a protrusion 113 is provided on the inner side of the stator core punching sheet to enhance the breath magnetic field and overcome the concave magnetic field in the middle of the rotor, thereby ensuring the sinusoidality of the breath magnetic field, improving motor efficiency and reducing motor noise.

[0029] In a further preferred embodiment of the present invention, Figure 2-3 As shown, a through hole 4 is provided on the tooth portion 11, a groove 5 is provided on the upper end surface of the yoke portion 12, the center axis of the groove 5 is aligned with the center axis of the tooth portion 11, and a punching I-shaped groove 3 is provided on the yoke portion 12.

[0030] In this embodiment, a groove 5 is provided for the installation and positioning of the motor stator to ensure the accurate positioning of the installation dimensions.

[0031] It should be noted that for the aforementioned embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0032] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative, such as the division of the above-mentioned units. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or communication connection between each other shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0033] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A modular linear motor core, characterized in that: The invention comprises a first stator iron sheet (1) and a second stator iron sheet (2), which are a straight strip of metal strip as a whole and are provided with a plurality of yokes (12) and a plurality of teeth (11) protruding along one side of the yokes (12) along the length direction thereof. The first stator iron sheet (1) and the second stator iron sheet (2) are alternately laminated to form a straight stator iron core structure. The uppermost end and the lowermost end of the straight stator iron core structure are both the first stator iron sheet (1). The side surfaces of the yokes (12) at both ends of the first stator iron sheet (1) are respectively provided with a convex portion (122) and a concave portion (121) for inserting the convex portion (122). The convex portion (122) and the concave portion (121) are of the same shape and size, so that when the stator iron core structure is spliced, the convex portion (122) can extend into the concave portion (121) and fit into each other.

2. A modular linear motor core according to claim 1, characterized in that: The end surface of the convex portion (122) is semicircular, and the semicircular shape can facilitate insertion between the convex portion (122) and the concave portion (121).

3. A modular linear motor core according to claim 2, characterized in that: The insertion end of the convex portion (122) is provided with a second groove (124), and a ball (123) is movably installed inside the second groove (124).

4. A modular linear motor core according to claim 3, characterized in that: The tooth portion (11) comprises a winding portion (111) and a limiting portion (112); the winding portion (111) is fixedly connected to the yoke portion (12); an end surface of the limiting portion (112) away from the yoke portion (12) is an arc surface (114); and the arc surface (114) is provided with a protrusion (113).

5. The modular linear motor core according to claim 4, characterized in that: The two side surfaces of the protrusion (113) are parallel to each other, the end surface of the protrusion (113) away from the yoke (12) and the two side surfaces of the protrusion (113) are perpendicular to each other, and the central axis of the protrusion (113) is aligned with the central axis of the tooth portion (11).

6. The modular linear motor core according to claim 4, characterized in that: The protrusion (113) protrudes in a direction away from the yoke (12), and the protrusion (113) is located at the center of the arc surface (114).

7. The modular linear motor core according to claim 1, wherein: The tooth portion (11) is provided with a through hole (4), the upper end surface of the yoke portion (12) is provided with a groove 1 (5), the center axis of the groove 1 (5) is aligned with the center axis of the tooth portion (11), and the yoke portion (12) is provided with a punching I-shaped groove (3).

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