A motor core stacking device

Abstract

This invention discloses a motor core stacking device, comprising: a core shaft arranged perpendicularly to a chassis; one end of the core shaft connected to the chassis; leveling pads arranged on the chassis; leveling pads surrounding the core shaft; fixed ribs and movable ribs arranged on the core shaft; fixed ribs fixedly connected to the core shaft; the number of movable ribs not less than the number of fixed ribs; multiple fixed ribs arranged adjacent to each other; the included angle between the fixed ribs being less than 180°; a demolding strip provided between the movable ribs and the core shaft; a protrusion provided on the side of the demolding strip that is in contact with the movable rib; a groove provided on the movable rib corresponding to the position of the protrusion; a demolding drive device provided between the top cover and the demolding strip; when the protrusion is in contact with the groove, the movable rib retracts inward toward the core shaft; when the protrusion is disengaged from the groove, the movable rib extends away from the core shaft. The design of the movable ribs avoids the phenomenon of inner ring tearing during motor core demolding.

Description

Technical Field

[0001] This application relates to the field of motor core stacking technology, and in particular to a motor core stacking device. Background Technology

[0002] Motor cores, such as stator and rotor cores, are typically formed by stacking multiple core laminations. To ensure that each core lamination is aligned correctly, a motor core stacking device is used as a positioning mold. Current methods usually involve layering the core laminations onto a mandrel, typically a cylinder, and then removing the formed motor core from the mandrel after stacking. However, to ensure stacking accuracy, the inner rings of the core laminations need to be in close contact with the mandrel, making demolding difficult. Furthermore, the core laminations are annular structures and typically made of thin silicon steel sheets. During demolding, the tight fit between the mandrel and the core laminations easily causes scratches in the inner holes of the laminations, affecting product quality and even rendering the core unusable. Additionally, existing mandrels have fixed dimensions and cannot accommodate motor cores with varying inner diameters.

[0003] The aforementioned technical issues have become urgent technical challenges that need to be addressed within the industry. Summary of the Invention

[0004] In order to at least solve the above-mentioned technical problems, the purpose of this invention is to provide a motor core stacking device, which avoids the phenomenon of inner ring tearing when the motor core is demolded by the design of movable ribs.

[0005] To achieve the above objectives, the motor core stacking device provided in this application includes:

[0006] Chassis;

[0007] The mandrel is arranged perpendicularly to the chassis.

[0008] One end of the spindle is connected to the chassis;

[0009] Elevation pads are laid on the chassis;

[0010] Equivalent pads are arranged around the mandrel;

[0011] Multiple ribs are arranged on the mandrel;

[0012] Multiple ribs are arranged around the mandrel;

[0013] The reinforcing ribs are perpendicular to the chassis;

[0014] Ribs include fixed ribs and movable ribs;

[0015] The fixing rib is fixedly connected to the mandrel;

[0016] The number of movable stiffeners shall not be less than the number of fixed stiffeners;

[0017] When there are multiple fixed reinforcing bars, the multiple fixed reinforcing bars are arranged adjacent to each other;

[0018] The included angle between the fixing ribs is less than 180°;

[0019] Between the movable rib and the mandrel, there is also a release strip;

[0020] The side of the release strip that is in contact with the movable rib has a protrusion;

[0021] On the movable rib, a groove is provided at the position corresponding to the protrusion;

[0022] A top cover is provided at the end of the spindle furthest from the chassis;

[0023] A demolding drive device is also provided between the top cover and the demolding strip;

[0024] The demolding drive device can make the demolding strip reciprocate along the length of the mandrel;

[0025] When the protrusion fits into the groove, the movable rib retracts inward toward the spindle;

[0026] When the protrusion separates from the groove, the movable rib extends in the direction away from the mandrel.

[0027] Furthermore, the demolding drive is a screw.

[0028] Furthermore, screws connect the top cover to the release strip;

[0029] Push and pull the release strip using the knob screw.

[0030] Furthermore, the mandrel is provided with rib grooves, and the ribs are arranged in the rib grooves.

[0031] Furthermore, it also includes:

[0032] Fixing screws are used to connect the movable rib to the mandrel.

[0033] Furthermore, the fixing screw passes through the release strip, connecting the movable rib to the mandrel.

[0034] Furthermore, it also includes:

[0035] Limit screws are provided; the demolding strip has limit holes, and limit screws are installed inside the limit holes.

[0036] The limit screw is used to limit the displacement of the release strip.

[0037] Furthermore, there are multiple protrusions and grooves; each protrusion corresponds to a groove.

[0038] Furthermore, it also includes:

[0039] The positioning pin is connected to the chassis via a magnetic base;

[0040] The magnetic base is magnetically connected to the chassis;

[0041] The locating pin is perpendicular to the chassis.

[0042] Furthermore, when there are multiple movable ribs, the multiple movable ribs are arranged adjacent to each other;

[0043] Multiple reinforcing bars are distributed at equal intervals.

[0044] The motor core stacking device of this application includes: a chassis; a mandrel, which is arranged perpendicularly to the chassis; one end of the mandrel is connected to the chassis; leveling pads are arranged on the chassis; the leveling pads are arranged around the mandrel; multiple ribs are arranged on the mandrel; the multiple ribs are arranged around the mandrel; the ribs are perpendicular to the chassis; the ribs include fixed ribs and movable ribs; the fixed ribs are fixedly connected to the mandrel; the number of movable ribs is not less than the number of fixed ribs; when there are multiple fixed ribs, the multiple fixed ribs are arranged adjacent to each other; the included angle between the fixed ribs is less than 1 / 3. 180°; Between the movable rib and the mandrel, there is also a demolding strip; a protrusion is provided on the side of the demolding strip that is in contact with the movable rib; a groove is provided on the movable rib corresponding to the position of the protrusion; a top cover is provided at the end of the mandrel away from the chassis; a demolding drive device is also provided between the top cover and the demolding strip; the demolding drive device can make the demolding strip reciprocate along the length of the mandrel; when the protrusion is in contact with the groove, the movable rib retracts inward toward the mandrel; when the protrusion is disengaged from the groove, the movable rib extends away from the mandrel. The design of the movable ribs prevents inner ring damage during demolding of the motor core; the design of the fixing screws further ensures the accuracy of core lamination stacking; the design of the limit screws ensures precise control of the movable ribs' movement by the demolding strips; by adjusting the size of the movable ribs, it can accommodate the stacking of motor cores with different inner diameters, enabling one mold to stack motor cores of various sizes, avoiding the need for different sized molds to accommodate different sizes of motor cores; this ensures no damage to the inner ring of the motor core during demolding, improving product quality and thus enhancing market competitiveness; the design of the positioning pins improves the positional accuracy of the core laminations during layer stacking, preventing misalignment and improving the neatness of the core slot shape after stacking. Attached Figure Description

[0045] The accompanying drawings are provided to further illustrate the present application and form part of the specification. Together with the embodiments of the present application, they serve to explain the present application but do not constitute a limitation thereof. In the drawings:

[0046] Figure 1This is a schematic diagram of the structure of the motor core stacking device according to an embodiment of this application;

[0047] Figure 2 yes Figure 1 Schematic diagram of the structure of region A in the middle;

[0048] Figure 3 This is a top view structural schematic diagram of the motor core stacking device according to an embodiment of this application.

[0049] Explanation of reference numerals in the attached figures:

[0050] 101-Chassis; 102-Equal height pad; 103-Mandrel; 104-Fixing rib; 105-Moving rib; 106-Demolding strip; 107-Fixing screw; 108-Limiting screw; 109-Positioning pin; 110-Magnetic base; 201-Pressure cap; 202-Top cover; 203-Demolding drive device; 204-Groove; 205-Protrusion. Detailed Implementation

[0051] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0052] It should be understood that the steps described in the method embodiments of this application may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this application is not limited in this respect.

[0053] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.

[0054] It should be noted that the terms "one" and "multiple" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". "Multiple" should be understood as two or more.

[0055] This invention provides a motor core stacking device, comprising:

[0056] Chassis;

[0057] The mandrel is arranged perpendicularly to the chassis.

[0058] One end of the spindle is connected to the chassis;

[0059] Elevation pads are laid on the chassis;

[0060] Equivalent pads are arranged around the mandrel;

[0061] Multiple ribs are arranged on the mandrel;

[0062] Multiple ribs are arranged around the mandrel;

[0063] The reinforcing ribs are perpendicular to the chassis;

[0064] Ribs include fixed ribs and movable ribs;

[0065] The fixing rib is fixedly connected to the mandrel;

[0066] The number of movable stiffeners shall not be less than the number of fixed stiffeners;

[0067] When there are multiple fixed reinforcing bars, the multiple fixed reinforcing bars are arranged adjacent to each other;

[0068] The included angle between the fixing ribs is less than 180°;

[0069] Between the movable rib and the mandrel, there is also a release strip;

[0070] The side of the release strip that is in contact with the movable rib has a protrusion;

[0071] On the movable rib, a groove is provided at the position corresponding to the protrusion;

[0072] A top cover is provided at the end of the spindle furthest from the chassis;

[0073] A demolding drive device is also provided between the top cover and the demolding strip;

[0074] The demolding drive device can make the demolding strip reciprocate along the length of the mandrel;

[0075] When the protrusion fits into the groove, the movable rib retracts inward toward the spindle;

[0076] When the protrusion separates from the groove, the movable rib extends in the direction away from the mandrel.

[0077] Example 1

[0078] Figure 1 This is a schematic diagram of the structure of the motor core stacking device according to an embodiment of this application. Figure 2 yes Figure 1 A schematic diagram of the structure of region A in the middle. Figure 3This is a top view structural schematic diagram of the motor core stacking device according to an embodiment of this application. The following will be discussed in conjunction with the attached diagram. Figure 1-2 The present application provides a detailed description of the motor core stacking device according to the embodiments of this application.

[0079] The motor core stacking device of this application embodiment is used for stacking motor cores, such as the stacking of stator cores and the stacking of rotor cores.

[0080] In some exemplary embodiments, the motor core is formed by stacking multiple core laminations, and the core laminations have a ring-shaped structure.

[0081] In some exemplary embodiments, the motor core stacking device of this application includes: a chassis 101.

[0082] In some exemplary embodiments, the chassis 101 can be a circle, square, rhombus, or other polygons as needed.

[0083] In some exemplary embodiments, the motor core stacking device of this application further includes: a mandrel 103.

[0084] In some exemplary embodiments, the spindle 103 is arranged perpendicularly to the chassis 101.

[0085] In some exemplary embodiments, one end of the spindle 103 is connected to the chassis 101.

[0086] In some exemplary embodiments, one end of the spindle 103 is fixedly or movably connected to the chassis 101 as needed.

[0087] In some exemplary embodiments, the mandrel 103 may be cylindrical as needed.

[0088] In some exemplary embodiments, the center point of the chassis 101 is located on the extension of the center line of the spindle 103.

[0089] In some exemplary embodiments, the motor core stacking device of this application further includes: an equal-height pad 102.

[0090] In some exemplary embodiments, the leveling pad 102 is arranged on the chassis 101.

[0091] In some exemplary embodiments, the contour pads 102 are arranged around the mandrel 103.

[0092] In some exemplary embodiments, when there is only one contour pad 102, the contour pad 102 is annular, and the line connecting the center of the contour pad 102 and the center point of the mandrel 103 is perpendicular to the chassis 101.

[0093] In some exemplary embodiments, when there are multiple contour pads 102, the multiple contour pads 102 are evenly surrounding the mandrel 103.

[0094] In some exemplary embodiments, the leveling pad 102 is used to support the motor core and to provide a gap between the motor core and the chassis 101.

[0095] In some exemplary embodiments, when there are multiple contour pads 102, the heights of the multiple contour pads 102 are consistent.

[0096] In some exemplary embodiments, the surface of the contour pad 102 is flat.

[0097] In some exemplary embodiments, the contour pad 102 may be made of wood or metal.

[0098] In some exemplary embodiments, a plurality of ribs are arranged on the mandrel 103.

[0099] In some exemplary embodiments, a plurality of ribs are arranged around the mandrel 103.

[0100] In some exemplary embodiments, the ribs are perpendicular to the chassis 101, which can be understood as each rib being arranged vertically along the mandrel 103 and surrounding the mandrel 103.

[0101] In some exemplary embodiments, the ribs may be connected to the chassis 101 or not, as needed; when the ribs are not connected to the chassis 101, the distance between the ribs and the chassis 101 is less than the height of the leveling pad 102.

[0102] In some exemplary embodiments, the mandrel 103 is provided with a rib groove as needed, and the ribs are disposed in the rib groove; the ribs protrude from the rib groove.

[0103] In some exemplary embodiments, the ribs include fixed ribs 104 and movable ribs 105.

[0104] In some exemplary embodiments, the fixing rib 104 is fixedly connected to the mandrel 103.

[0105] In some exemplary embodiments, the fixing rib 104 and the mandrel 103 may be fixedly connected by screws as needed.

[0106] In some exemplary embodiments, the number of movable ribs 105 is not less than the number of fixed ribs 104, that is, the number of movable ribs 105 is greater than or equal to the number of fixed ribs 104, for example, there are 2 fixed ribs 104 and 2 or more movable ribs 105.

[0107] In some exemplary embodiments, when there are multiple fixing ribs 104, the multiple fixing ribs 104 are arranged adjacent to each other.

[0108] In some exemplary embodiments, when there are multiple movable ribs 105, the multiple movable ribs 105 are arranged adjacent to each other.

[0109] In some exemplary embodiments, the included angle between the fixing ribs 104 is less than 180°. This can be understood as follows: when there are 3 fixing ribs 104, the 3 fixing ribs 104 are arranged continuously on the mandrel 103. For example, the mandrel 103 is provided with 6 ribs, numbered 1-6 in clockwise order. Numbers 1-3 are fixing ribs 104, and numbers 4-6 are movable ribs 105. The included angle formed by the fixing rib 104 numbered 1 and the fixing rib 104 numbered 3 is less than 180°. For example, the included angle formed by the fixing rib 104 numbered 1 and the fixing rib 104 numbered 3 is 90°.

[0110] In some exemplary embodiments, multiple reinforcing bars are distributed at equal intervals.

[0111] In some exemplary embodiments, a release strip 106 is also included between the movable rib 105 and the mandrel 103.

[0112] In some exemplary embodiments, the release strip 106 is provided with a protrusion 205, which is located on the side of the release strip 106 that is in contact with the movable rib 105.

[0113] In some exemplary embodiments, a groove 204 is provided on the movable rib 105 at the position corresponding to the protrusion 205.

[0114] In some exemplary embodiments, the protrusion 205 matches the groove 204.

[0115] In some exemplary embodiments, the size of the groove 204 is not smaller than the size of the protrusion 205.

[0116] In some exemplary embodiments, there are multiple protrusions 205 and grooves 204.

[0117] In some exemplary embodiments, the protrusions 205 correspond one-to-one with the grooves 204.

[0118] In some exemplary embodiments, a top cover 202 is provided at the other end of the spindle 103, that is, a top cover 202 is provided at the end of the spindle 103 away from the chassis 101.

[0119] In some exemplary embodiments, a demolding drive device 203 is also provided between the top cover 202 and the demolding strip 106.

[0120] In some exemplary embodiments, a pressure cap 201 is also provided on the upper part of the top cover 202.

[0121] In some exemplary embodiments, the pressure cap 201 is used to protect the top cover 202 and the demolding drive device 203.

[0122] In some exemplary embodiments, the demolding drive 203 can reciprocate the demolding strip 106 along the length of the mandrel 103.

[0123] In some exemplary embodiments, when the protrusion 205 is in contact with the groove 204, the movable rib 105 retracts inward toward the spindle 103.

[0124] In some exemplary embodiments, when the protrusion 205 is in contact with the groove 204, that is, when the protrusion 205 is completely inside the groove 204, the distance between the outer side of the movable rib 105 and the center line of the spindle 103 is less than the distance between the outer side of the fixed rib 104 and the center line of the spindle 103.

[0125] In some exemplary embodiments, when the protrusion 205 disengages from the groove 204, the movable rib 105 extends in a direction away from the spindle 103.

[0126] In some exemplary embodiments, when the protrusion 205 is completely disengaged from the groove 204, the distance between the outer side of the movable rib 105 and the center line of the spindle 103 is not less than the distance between the outer side of the fixed rib 104 and the center line of the spindle 103.

[0127] In some exemplary embodiments, when the protrusion 205 is completely disengaged from the groove 204, the distance from the outer side of the movable rib 105 to the center line of the spindle 103 is equal to the distance from the outer side of the fixed rib 104 to the center line of the spindle 103.

[0128] In some exemplary embodiments, the demolding drive device 203 is a push-pull device for the demolding strip 106.

[0129] In some exemplary embodiments, the push-pull device for the release strip 106 is a screw.

[0130] In some exemplary embodiments, the top cover 202 is connected to the release strip 106 by screws.

[0131] In some exemplary embodiments, the protrusion 205 is disengaged from the groove 204 or placed in the groove 204 by pushing or pulling the release strip 106 with a knob screw.

[0132] In some exemplary embodiments, the motor core stacking device of this application further includes: fixing screws 107.

[0133] In some exemplary embodiments, the fixing screw 107 is used to connect the movable rib 105 to the mandrel 103.

[0134] In some exemplary embodiments, the fixing screw 107 passes through the demolding strip 106 and connects the movable rib 105 to the mandrel 103; it can be understood that the demolding strip 106 is provided with a U-shaped groove along the length direction of the demolding strip at the position corresponding to the fixing screw 107. The design of the U-shaped groove facilitates the fixing screw 107 to connect the movable rib 105 to the mandrel 103.

[0135] In some exemplary embodiments, a plurality of fixing screws 107 are provided at the location where the movable rib 105 is provided on the mandrel 103.

[0136] In some exemplary embodiments, the fixing screw 107 is used to fix the distance between the movable rib 105 and the mandrel 103.

[0137] In some exemplary embodiments, when the distance between the movable rib 105 and the mandrel 103 is adjusted in preparation for stacking the iron core laminations, the protrusion 205 is separated from the groove 204 by pushing and pulling the release strip 106, and the fixing screw 107 is fixed in place; the iron core laminations are put on from top to bottom, and as the height of the motor iron core gradually increases, the fixing screw 107 is gradually loosened from bottom to top according to the height of the motor iron core.

[0138] In some exemplary embodiments, when the motor core is stacked and demolding is required, the demolding strip 106 is pushed and pulled in the opposite direction to place the protrusion 205 into the groove 204, thereby causing the movable rib 105 to retract inward toward the spindle 103, thereby separating the movable rib 105 from the inner ring of the motor core, thus creating a gap between the inner ring of the motor core and the movable rib 105, avoiding the occurrence of tearing of the inner ring when the motor core is demolded.

[0139] In some exemplary embodiments, the motor core stacking device of this application further includes: a limiting screw 108.

[0140] In some exemplary embodiments, the release strip 106 is provided with a limiting hole.

[0141] In some exemplary embodiments, a limiting screw 108 is provided in the limiting hole.

[0142] In some exemplary embodiments, the limiting screw 108 is used to limit the displacement of the release strip 106.

[0143] In some exemplary embodiments, when the release strip 106 is pushed or pulled, the limiting screw 108 is used to limit the left and right movement of the release strip 106, thereby preventing the release strip 106 from deviating.

[0144] In some exemplary embodiments, when the demolding strip 106 is pushed or pulled, the limiting screw 108 can also be used to limit the up and down movement of the demolding strip 106, thereby avoiding excessive pushing or pulling of the demolding strip 106 by the demolding drive device 203, or avoiding the demolding strip 106 not being in place, which would affect the accuracy of the core lamination.

[0145] In some exemplary embodiments, for example, when the limiting screw 108 restricts the movement of the release strip 106, the release strip 106 has completely disengaged the protrusion 205 from the groove 204, or the protrusion 205 is completely within the groove 204.

[0146] In some exemplary embodiments, a positioning pin 109 may also be included. Typically, the iron core lamination has round holes or irregular holes. In order to ensure the neatness of each hole and slot after the iron core is stacked, each iron core lamination needs to be positioned not only by the mandrel 103 but also by the positioning pin 109. At this time, the positioning pin 109 passes through the round hole or irregular hole on the iron core lamination to position the iron core lamination.

[0147] In some exemplary embodiments, the positioning pin 109 is connected to the chassis 101 via a magnetic base 110.

[0148] In some exemplary embodiments, the locating pin 109 is magnetically connected to the chassis 101 via the magnetic base 110.

[0149] In some exemplary embodiments, in order to facilitate the adjustment of the position of the positioning pin 109 according to the iron core laminations of different sizes, the positioning pin 109 is connected to the chassis 101 by a magnetic base 110; that is, the chassis 101 is an iron metal part, and the magnetic base 110 activates the magnetic attraction function when the positioning pin 109 needs to be positioned. After the magnetic attraction function is activated, the magnetic base 110 activates the electromagnetic function and firmly attaches to the chassis 101, so that the positioning pin 109 is perpendicular to the chassis 101.

[0150] In some exemplary embodiments, the chassis 101 may be an all-metal body, such as an iron plate, as needed; the chassis 101 may also have a magnetic surface layer on its surface as needed for positioning by the magnetic base 110.

[0151] In some exemplary embodiments, when stacking the iron core laminations layer by layer, the magnetic chuck 110 is first turned on in a non-magnetic state. After the inner ring of the iron core lamination is placed on the mandrel 103, the position of the positioning pin 109 is moved so that the round or irregular hole on the iron core lamination is fitted onto the positioning pin 109. At this time, the magnetic function of the magnetic chuck 110 is activated to lock the position of the positioning pin 109. At the same time, the positioning pin 109 is perpendicular to the chassis 101. Then the iron core laminations are stacked layer by layer, which avoids the occurrence of misalignment of the iron core laminations.

[0152] In some exemplary embodiments, each core lamination is positioned identically on the positioning pin 109, meaning that the core laminations are aligned when stacked vertically.

[0153] In some exemplary embodiments, the diameter of the locating pin 109 is slightly smaller than the diameter of the round hole or irregular hole on the iron core lamination, for example, 0.1 mm smaller, so that the locating pin 109 and the round hole or irregular hole on the iron core lamination are in clearance fit.

[0154] In some exemplary embodiments, depending on the positioning requirements of the iron core lamination, there can be multiple positioning pins 109 and matching magnetic bases 110. When demolding, the magnetic base is readjusted to a non-magnetic state to reduce the resistance during demolding and avoid damage to the positioning pins during demolding.

[0155] While the embodiments disclosed in this invention are as described above, they are merely illustrative of the embodiments to facilitate understanding of the invention and are not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and variations in the form and details of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection for this invention shall still be determined by the scope defined in the appended claims.

Claims

1. A motor core stacking device, characterized in that, include: Chassis; A mandrel, wherein the mandrel is arranged perpendicularly to the chassis; One end of the mandrel is connected to the chassis; Elevation pads are laid on the chassis; The contour pads are arranged around the mandrel; Multiple ribs are arranged on the mandrel; Multiple ribs are arranged around the mandrel; The reinforcing ribs are perpendicular to the chassis; The reinforcing bars include fixed reinforcing bars and movable reinforcing bars; The fixing rib is fixedly connected to the mandrel; The number of movable reinforcing bars is not less than the number of fixed reinforcing bars; When there are multiple fixed ribs, the multiple fixed ribs are arranged adjacent to each other; The included angle between the fixed ribs is less than 180°; Between the movable rib and the mandrel, there is also a release strip; The side of the release strip that is in contact with the movable rib has a protrusion; A groove is provided on the movable rib corresponding to the position of the protrusion; The end of the spindle away from the chassis is provided with a top cover; A demolding drive device is also provided between the top cover and the demolding strip; The demolding drive device can reciprocate the demolding strip along the length of the mandrel; When the protrusion is in contact with the groove, the movable rib retracts inward toward the spindle; When the protrusion disengages from the groove, the movable rib extends in a direction away from the mandrel; The release strip has a limiting hole, and the limiting screw is disposed in the limiting hole; The limiting screw is used to limit the displacement of the demolding strip; There are multiple protrusions and grooves; each protrusion corresponds to a groove.

2. The motor core stacking device according to claim 1, characterized in that, The demolding drive device is a screw.

3. The motor core stacking device according to claim 2, characterized in that, The screw connects the top cover to the demolding strip; The release strip is pushed or pulled by turning the screw.

4. The motor core stacking device according to claim 3, characterized in that, The mandrel is provided with rib grooves, and the ribs are arranged in the rib grooves.

5. The motor core stacking device according to claim 4, characterized in that, Also includes: A fixing screw is used to connect the movable rib to the mandrel.

6. The motor core stacking device according to claim 5, characterized in that, The fixing screw passes through the demolding strip and connects the movable rib to the mandrel.

7. The motor core stacking device according to claim 1, characterized in that, Also includes: A positioning pin, which is connected to the chassis via a magnetic base; The magnetic base is magnetically connected to the chassis; The locating pin is perpendicular to the chassis.

8. The motor core stacking device according to claim 1, characterized in that, When there are multiple movable ribs, the multiple movable ribs are arranged adjacent to each other; The multiple ribs are distributed at equal intervals.

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