A stator core striking device capable of reducing eddy current loss

Abstract

The present invention belongs to the field of motor accessories manufacturing, and specifically relates to a stator core striking device capable of reducing eddy current loss, comprising a core positioning mechanism and a core striking mechanism, wherein the core positioning mechanism is used to position the stator core and can drive the stator core to rotate and lift, and the core striking mechanism is used to strike the side of the stator core. The present invention uses the core striking mechanism to strike the side of the stator core, thereby loosening the adhesion between the sheets, reducing eddy current loss, and effectively improving the efficiency of the motor. At the same time, the present invention also ensures that the core is in a compressed state, and the height of the stator core does not change.

Description

Technical Field

[0001] The invention belongs to the field of motor accessory manufacturing, and in particular relates to a stator core striking device capable of reducing eddy current loss. Background Art

[0002] In motor production, the motor core is generally made of 0.5mm silicon steel sheets. When the motor is operating, an alternating current flows in the coil, generating an alternating magnetic flux. This changing magnetic flux generates an induced current in the core. The induced current generated in the core circulates in a plane perpendicular to the direction of the magnetic flux, hence the name eddy current. Eddy current loss causes the core to heat up, resulting in power loss and lowering motor efficiency. To reduce eddy current loss, the core is constructed of insulated silicon steel sheets stacked together. This allows the eddy current to flow through a narrow, long loop with a smaller cross-section, increasing the resistance of the eddy current path. In actual production, after the core undergoes the compaction and annealing processes, adhesion between the core sheets may occur. This results in increased eddy current loss and reduced motor efficiency. Summary of the Invention

[0003] In order to make up for the deficiencies of the prior art, the present invention provides a technical solution for a stator core striking device capable of reducing eddy current losses.

[0004] A stator core striking device capable of reducing eddy current loss comprises a core positioning mechanism and a core striking mechanism. The core positioning mechanism is used to position the stator core and can drive the stator core to rotate and lift. The core striking mechanism is used to strike the side surface of the stator core.

[0005] Furthermore, the core positioning mechanism includes an electromagnetic adsorption rod, a rotation drive assembly and a lifting drive assembly. The electromagnetic adsorption rod is used to extend into the stator core and absorb the stator core. The rotation drive assembly is used to drive the electromagnetic adsorption rod to rotate. The lifting drive assembly is used to drive the electromagnetic adsorption rod to rise and fall.

[0006] Furthermore, the lifting drive assembly includes a lifting slide, a slider of the lifting slide is fixedly connected to a lifting seat, and the rotation drive assembly and the electromagnetic adsorption rod are arranged on the lifting seat.

[0007] Furthermore, the rotation drive assembly includes a first motor and a first transmission mechanism, the first motor and the first transmission mechanism are in transmission cooperation, and the first transmission mechanism and the electromagnetic adsorption rod are in transmission cooperation and drive the electromagnetic adsorption rod to rotate.

[0008] Furthermore, the first transmission mechanism is a first pulley mechanism.

[0009] Furthermore, the iron core striking mechanism includes a hammer and a hammer driving assembly, wherein the hammer is used to strike the side surface of the stator iron core, and the hammer driving assembly is used to drive the hammer to move.

[0010] Furthermore, the hammer drive assembly includes a second motor and a second transmission mechanism, the second motor is in transmission cooperation with the second transmission mechanism, and the second transmission mechanism is in transmission cooperation with the hammer and drives the hammer to rotate.

[0011] Furthermore, there are at least two groups of the iron core knocking mechanisms, which knock the stator iron core in multiple directions.

[0012] Furthermore, it also includes a conveying mechanism, which is used to place the stator core and convey the stator core, and the electromagnetic adsorption rod is located at the upper end of the conveying mechanism.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention uses an iron core tapping mechanism to tap the sides of the stator core, loosening the adhesion between the sheets, reducing eddy current losses and effectively improving motor efficiency. At the same time, the present invention also ensures that the iron core is compacted and the stator core height does not change. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is one of the structural diagrams of the present invention;

[0016] Figure 2 This is the second structural diagram of the present invention;

[0017] Figure 3 This is a schematic structural diagram of the iron core striking mechanism according to the first embodiment of the present invention;

[0018] Figure 4 This is a schematic structural diagram of the iron core striking mechanism according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] See also Figure 1-4A stator core striking device capable of reducing eddy current loss includes a core positioning mechanism 1 and a core striking mechanism 2. The core positioning mechanism 1 is used to position the stator core 4 and can drive the stator core 4 to rotate and lift. The core striking mechanism 2 is used to strike the side of the stator core 4.

[0022] As will be appreciated, in the above technical solution, the present invention uses the core tapping mechanism 2 to tap the sides of the stator core 4, loosening any adhesion between the sheets. This also ensures the core remains compressed, with the height of the stator core 4 remaining unchanged. Experiments have shown that tapping reduces eddy current losses and effectively improves motor efficiency by 0.3% to 0.5%.

[0023] Continue reading Figure 1 and Figure 2 The core positioning mechanism 1 includes an electromagnetic adsorption rod 100, a rotation drive assembly and a lifting drive assembly. The electromagnetic adsorption rod 100 is a rod-shaped electromagnet used to extend into the stator core 4 and adsorb the stator core 4. The rotation drive assembly is used to drive the electromagnetic adsorption rod 100 to rotate, and the lifting drive assembly is used to drive the electromagnetic adsorption rod 100 to rise and fall.

[0024] Among them, the lifting drive component includes a lifting slide 101. The lifting slide 101 is a well-known technology. It can be an electric slide, a pneumatic slide, or a hydraulic slide. The slider 1010 of the lifting slide 101 is fixedly connected to the lifting seat 102. The rotation drive component and the electromagnetic adsorption rod 100 are arranged on the lifting seat 102.

[0025] Among them, the electromagnetic adsorption rod 100 is rotatably installed on the lifting seat 102 through a bearing. The rotation drive assembly includes a first motor 103 and a first transmission mechanism. The first motor 103 is in transmission cooperation with the first transmission mechanism. The first transmission mechanism is in transmission cooperation with the electromagnetic adsorption rod 100 and drives the electromagnetic adsorption rod 100 to rotate.

[0026] Specifically, the first transmission mechanism is a first pulley mechanism 104 , a driving pulley of the first pulley mechanism 104 is sleeved on the output shaft of the first motor 103 , a driven pulley is sleeved on the upper end of the electromagnetic adsorption rod 100 , and the driving pulley and the driven pulley are driven by a belt.

[0027] When the rotation drive assembly is working, the first motor 103 drives the first pulley mechanism 104 to work, and the first pulley mechanism 104 drives the electromagnetic adsorption rod 100 to rotate.

[0028] Furthermore, the core striking mechanism 2 has two left and right groups, respectively striking the left and right sides of the stator core 4. The core striking mechanism 2 includes a hammer 200 and a hammer drive assembly. The hammer 200 is a plastic structure used to strike the side of the stator core 4, and the hammer drive assembly is used to drive the hammer 200 to move.

[0029] The iron core striking mechanism 2 of the present invention has multiple implementations, two of which are listed below.

[0030] The first implementation method: Figure 3 As shown, the hammer drive assembly includes a second motor 201 and a second transmission mechanism, the second transmission mechanism is a second pulley mechanism 202, the driving wheel of the second pulley mechanism 202 is sleeved on the output shaft of the second motor 201, and the driven wheel is sleeved on the short shaft at the lower end of the hammer 200, and a belt is connected between the driving wheel and the driven wheel. The second motor 201 drives the second pulley mechanism 202 to work by forward and reverse rotation, and the second pulley mechanism 202 drives the hammer 200 to swing back and forth to strike the stator core 4.

[0031] The second implementation method: Figure 4 As shown, the hammer drive assembly includes a third motor, an eccentric wheel 205, an elastic band 204, and a limit rod 203. The lower end of the hammer 200 is rotatably arranged, and the elastic band 204 is connected between the hammer 200 and the limit rod 203. The elastic band 204 pulls the hammer 200 toward the limit rod 203. The third motor drives the eccentric wheel 205 to rotate. When the side of the eccentric wheel 205 farther from the wheel center abuts against the hammer 200, it can drive the hammer 200 outward. When the side of the eccentric wheel 205 farther from the wheel center moves away from the hammer 200, the hammer 200 is quickly reset under the drive of the elastic band 204, achieving a striking effect.

[0032] In addition, the core striking mechanism 2 can also be designed to directly drive the hammer 200 to move through a pneumatic cylinder or an oil cylinder, and strike the stator core 4 through the movement.

[0033] In addition, the present invention can also be equipped with a conveyor mechanism 3, which is a conveyor belt with a tray 300 placed on it. The stator core 4 is placed on the tray 200. The conveyor mechanism 3 transports the stator core 4, and the electromagnetic adsorption rod 100 is located at the upper end of the conveyor mechanism 3. The core positioning mechanism 1 is mounted on the frame of the conveyor mechanism 3, and the two core knocking mechanisms 2 are respectively installed on the left and right sides of the frame of the conveyor mechanism 3.

[0034] The working process of the present invention is as follows: the conveying mechanism 3 sends the stator core 4 one by one to the bottom of the electromagnetic adsorption rod 100. Whether the stator core 4 is in place can be detected by an infrared probe. Then the lifting drive assembly drives the electromagnetic adsorption rod 100 to move down and extend into the cavity of the stator core 4. The electromagnetic adsorption rod 100 is energized and absorbs the stator core 4. Then the lifting drive assembly drives the electromagnetic adsorption rod 100 together with the stator core 4 to move up to the position corresponding to the hammer 200. Then the hammer drive assembly drives the hammer 200 to knock the stator core 4. At the same time, the lifting drive assembly drives the electromagnetic adsorption rod 100 together with the stator core 4 to move down step by step, and the rotation drive assembly drives the electromagnetic adsorption rod 100 together with the stator core 4 to rotate step by step, thereby achieving all-round knocking of the stator core 4.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stator core striking device capable of reducing eddy current loss, characterized in that: It comprises an iron core positioning mechanism (1) and an iron core knocking mechanism (2), wherein the iron core positioning mechanism (1) is used to position the stator iron core (4) and can drive the stator iron core (4) to rotate and lift, and the iron core knocking mechanism (2) is used to knock the side of the stator iron core (4); The iron core positioning mechanism (1) comprises an electromagnetic adsorption rod (100), a rotation drive assembly and a lifting drive assembly, wherein the electromagnetic adsorption rod (100) is used to extend into the stator iron core (4) and adsorb the stator iron core (4), the rotation drive assembly is used to drive the electromagnetic adsorption rod (100) to rotate, and the lifting drive assembly is used to drive the electromagnetic adsorption rod (100) to rise and fall; The lifting drive assembly comprises a lifting slide (101), a slider (1010) of the lifting slide (101) is fixedly connected to a lifting seat (102), and the rotation drive assembly and the electromagnetic adsorption rod (100) are arranged on the lifting seat (102); The rotation drive assembly comprises a first motor (103) and a first transmission mechanism, wherein the first motor (103) is in transmission cooperation with the first transmission mechanism, and the first transmission mechanism is in transmission cooperation with the electromagnetic adsorption rod (100) and drives the electromagnetic adsorption rod (100) to rotate; The iron core striking mechanism (2) comprises a hammer (200) and a hammer driving assembly, wherein the hammer (200) is used to strike the side of the stator iron core (4), and the hammer driving assembly is used to drive the hammer (200) to move; The hammer drive assembly comprises a second motor (201) and a second transmission mechanism, wherein the second motor (201) is in transmission cooperation with the second transmission mechanism, and the second transmission mechanism is in transmission cooperation with the hammer (200) and drives the hammer (200) to rotate.

2. A stator core striking device capable of reducing eddy current loss according to claim 1, characterized in that: The first transmission mechanism is a first pulley mechanism (104).

3. The stator core striking device capable of reducing eddy current loss according to claim 1, characterized in that: The iron core knocking mechanism (2) has at least two groups, which knock the stator iron core (4) in multiple directions.

4. A stator core striking device capable of reducing eddy current loss according to claim 1, characterized in that: It also includes a conveying mechanism (3), which is used to place the stator core (4) and convey the stator core (4), and the electromagnetic adsorption rod (100) is located at the upper end of the conveying mechanism (3).

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