A comprehensive stepping core lamination structure and stacking method

Abstract

This invention discloses a composite step-core laminated structure, comprising several layers of silicon steel sheet units. Each layer of silicon steel sheet unit includes N pre-stacked silicon steel sheet groups spaced apart from each other. Each silicon steel sheet group includes a central column, a left side column, a right side column, an upper yoke, and a lower yoke. The left and right side columns are positioned on the left and right sides of the central column; the upper and lower yokes are positioned on the upper and lower sides of the central column. The central column, left side column, right side column, upper yoke, and lower yoke are all in contact with each other. The central column has asymmetrical tips at both ends, and the upper and lower yokes have notches corresponding to the tips at their connections with the central column. This invention improves the design of the central column structure, forming an asymmetrical structure. Simultaneously, the upper yoke is positioned using a longitudinal step-positioning method, and the lower yoke is positioned using a transverse step-positioning method. The central column, left side column, right side column, and lower yoke are installed and stacked sequentially. This ensures accurate positioning while reducing the number of holes drilled in the silicon steel sheets, thus reducing no-load losses.

Description

Technical Field

[0001] The invention belongs to the technical field of iron core laminations, and in particular relates to a comprehensive step-by-step iron core lamination structure and a lamination method. Background Art

[0002] In the traditional core stacking process, regardless of the core model and size, the core lamination is carried out in the same way, that is, one layer is stacked before the next layer, and the layers are stacked in order, and then the subsequent core needs to be opened, the upper yoke is disassembled, the wire package is assembled, and then the upper yoke is assembled again. During the lamination process, it is necessary to punch holes on each lamination for installation and positioning, which greatly increases the no-load loss; at the same time, the horizontal lamination method in the prior art requires manual stacking and inserting the upper yoke back again after the wire package is installed, which seriously affects the speed and quality of the return. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a comprehensive stepping iron core lamination structure and stacking method, which aims to solve the problem that in the prior art, holes need to be punched on each lamination during the lamination process to facilitate installation and positioning, which greatly increases the no-load loss; at the same time, the horizontal lamination method in the prior art requires manual insertion of the upper yoke piece one by one after the installation of the wire package, which seriously affects the speed and quality of the return.

[0004] The present invention is implemented by the following technical solutions:

[0005] A comprehensive stepping iron core lamination structure and stacking method, including several layers of silicon steel sheet units, each layer of the silicon steel sheet units includes N silicon steel sheet groups that are pre-stacked at intervals from each other, the silicon steel sheet group includes a middle column, a left column, a right column, an upper yoke sheet and a lower yoke sheet, the left column and the right column are arranged on the left and right sides of the middle column; the upper yoke sheet and the lower yoke sheet are arranged on the upper and lower sides of the middle column, and the middle column, the left column, the right column, the upper yoke sheet and the lower yoke sheet are all in contact and connected; the upper and lower ends of the middle column are provided with asymmetric tips, and the upper and lower yoke sheets and the middle column are connected with notches corresponding to the tips.

[0006] To optimize the above technical solutions, the specific measures taken also include:

[0007] Furthermore, the upper yoke is provided with a positioning hole.

[0008] Furthermore, the upper yoke pieces are stacked layer by layer in a longitudinal step-by-step manner, and the lower yoke pieces are stacked layer by layer in a transverse step-by-step manner, and the tips at the upper and lower ends of the center column are inserted into the gaps of the upper yoke piece and the lower yoke piece at intervals, respectively.

[0009] Furthermore, the lamination spacing distance of the upper yoke plate arranged in a longitudinal stepping manner is equal to the lamination spacing distance of the lower yoke plate arranged in a transverse stepping manner.

[0010] Furthermore, a first tip is provided at the upper end of the middle column, and the first tip is a symmetrical structure; a second tip is provided at the lower end of the middle column, and the second tip is an asymmetrical structure; and the angles at which the first tip and the second tip are separated from each other are both acute angles of the same angle.

[0011] Furthermore, the upper yoke sheet and the lower yoke sheet are both extended with equal widths along the length directions to wrap the vertical corners of the pre-stacked silicon steel sheet group.

[0012] Furthermore, the left column and the right column are extended by a set distance in the vertical direction, and the upper yoke sheet and the lower yoke sheet are shortened by a set distance in the horizontal direction, so as to form a silicon steel sheet unit without horizontal angles.

[0013] A comprehensive stepping core stacking method comprises the following steps:

[0014] With N pieces as one cycle, the middle column, the left column, the right column, the upper yoke piece, and the lower yoke piece are pre-stacked;

[0015] Using the pre-stacked upper yoke piece as a positioning reference, the pre-stacked middle column, left column, right column and lower yoke piece are stacked in sequence;

[0016] Taking the first layer of silicon steel sheet group formed at the bottom as the reference, pre-stacked silicon steel sheet groups with gradually increasing sizes are stacked from bottom to top until the largest silicon steel sheet group in the center layer;

[0017] With the largest silicon steel sheet group in the center layer as the symmetry center, silicon steel sheet groups with gradually smaller sizes continue to be stacked upwards until a symmetrical structure is formed.

[0018] Furthermore, with N pieces as one cycle, the specific process of pre-stacking the middle column, the left column, the right column, the upper yoke piece, and the lower yoke piece is as follows:

[0019] The middle column, the left column, the right column, the upper yoke piece, and the lower yoke piece are offset by a distance L along their respective length directions, so that the overlapped parts of the left column, the right column, the upper yoke piece, and the lower yoke piece form mutually perpendicular angles;

[0020] The left column and the right column are shortened by a set distance L along their respective length directions, and the upper yoke piece and the lower yoke piece are extended by a set distance L along their respective length directions, so that the corners of the left column and the right column are hidden between the corresponding upper yoke piece and the lower yoke piece;

[0021] The set distance L is Wherein, L represents the set distance, N represents the number of pre-stacked silicon wafers, and m represents the offset distance between each silicon wafer.

[0022] Beneficial effects of the present invention:

[0023] The present invention provides a comprehensive step-by-step iron core lamination structure, improves the design of the middle column structure, forms an upper and lower asymmetric structure, and adopts a longitudinal step-by-step positioning method for the upper yoke, and a transverse step-by-step positioning method for the lower yoke. Then, the upper yoke is used as a positioning reference, and the middle column, the left column, the right column, and the lower yoke are installed and stacked in sequence. While ensuring the accuracy of positioning, the number of holes punched in the silicon wafer is greatly reduced, and the no-load loss is reduced. At the same time, after the upper yoke is disassembled later for the installation of the wire package, the upper yoke can be quickly reinserted to ensure the quality of the returned sheet.

[0024] The synchronous widening of the upper and lower yokes in the horizontal direction enables the pre-stacked silicon steel sheet group to form a structure with horizontal corners and no vertical corners. There is no need to cut the corners of the silicon steel sheets, which avoids the magnetization of small triangular sheets and adsorption on the surface of the silicon steel sheets, and greatly reduces the possibility of tip discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a comprehensive stepping core lamination structure according to the first embodiment of the present invention.

[0026] Figure 2 It is a schematic diagram of a comprehensive stepping core lamination structure according to the second embodiment of the present invention.

[0027] Figure 3 It is a schematic diagram of a comprehensive stepping core lamination structure according to the third embodiment of the present invention.

[0028] Figure 4 It is a schematic structural diagram of a silicon steel sheet unit of a comprehensive stepping core lamination according to the first embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to illustrate the technical solution and working principle of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0030] First embodiment

[0031] like Figure 1As shown, an embodiment of the present invention provides a comprehensive stepping core lamination structure, including a plurality of layers of silicon steel sheet units A, each layer of silicon steel sheet units includes N silicon steel sheet groups that are pre-stacked with each other at intervals, and the silicon steel sheet group 1 includes a middle column 11, a left column 12, a right column 13, an upper yoke sheet 14 and a lower yoke sheet 15, and the left column 12 and the right column 13 are arranged on the left and right sides of the middle column 11; the upper yoke sheet 14 and the lower yoke sheet 15 are arranged on the upper and lower sides of the middle column 11, and the middle column 11, the left column 12, the right column 13, the upper yoke sheet 14 and the lower yoke sheet 15 are all in contact and connected;

[0032] Equal-sized spaces for placing wire packages are formed between the middle column 11 and the left column 12 of each layer of silicon steel sheet group 1, and between the middle column 11 and the right column 13. The upper yoke 14 is provided with a positioning hole 141, which is used to cooperate with the positioning column to facilitate the simultaneous insertion and positioning of multiple upper yokes 14, thereby improving the efficiency of inserting the sheet installation.

[0033] The upper yoke pieces 14 are stacked layer by layer in a longitudinal step-by-step manner, and the lower yoke pieces 15 are stacked layer by layer in a transverse step-by-step manner. The lamination spacing distance of the upper yoke pieces 14 arranged in a longitudinal step-by-step manner is equal to the lamination spacing distance of the lower yoke pieces 15 arranged in a transverse step-by-step manner. Asymmetric tips are provided at the upper and lower ends of the middle column 11, and notches corresponding to the tips are provided at the connection between the upper yoke piece 14 and the lower yoke piece 15 and the middle column 11. A first tip 111 is provided at the upper end of the middle column 11, and the first tip 111 is a symmetrical structure. A second tip 112 is provided at the lower end of the middle column 11, and the second tip 112 is an asymmetric structure. The angles at which the first tip 111 and the second tip 112 are separated from each other are both acute angles of the same angle. It can be understood that: the structure of the first tip 111 is a symmetrical triangle, and the second tip 112 is an asymmetrical triangular structure. The setting of this structure is convenient for cooperating with the upper yoke 14 using longitudinal stepping (that is, the multiple silicon steel sheets in each layer of silicon steel sheet unit A are offset by a set distance in the vertical direction) and the lower yoke 15 using longitudinal stepping (that is, the multiple silicon steel sheets in each layer of silicon steel sheet unit A are offset by a set distance in the horizontal direction), and finally forming a silicon steel sheet unit A. For the upper yoke 14 stacked by longitudinal stepping, multiple sheets can be stacked at the same time, which improves the insertion efficiency and insertion quality. In this embodiment, the acute angle is forty-five degrees, so the first tip 111 forms an isosceles triangle, and the asymmetrical structure of the second tip 112 is short on one side and long on the other side, which can be convenient for cooperating with the lower yoke 15 for lateral stepping stacking.

[0034] Second embodiment

[0035] like Figure 2As shown, the present embodiment also provides a comprehensive stepping core lamination structure, by changing the sheet width between the upper yoke sheet 24 and the lower yoke sheet 25, the vertical angle of the left column 22 and the right column 23 are wrapped, the silicon steel sheet group 2 includes a middle column 21, a left column 22, a right column 23, an upper yoke sheet 24 and a lower yoke sheet 25, the left column 22 and the right column 23 are arranged on the left and right sides of the middle column 21; the upper yoke sheet 24 and the lower yoke sheet 25 are arranged on the upper and lower sides of the middle column 21, the middle column 21, the left column 22, the right column 23, the upper yoke sheet 24 and the lower yoke sheet 25 are all in contact and connected; between the middle column 21 and the left column 22 of each layer of silicon steel sheet group, equal-sized spaces for placing wire packages are formed, and the upper yoke sheet 24 is provided with a positioning hole 241, which is used to cooperate with the positioning column to facilitate the simultaneous insertion and positioning of multiple upper yoke sheets 24, thereby improving the efficiency of sheet installation.

[0036] The upper yoke 24 and the lower yoke 25 both extend the width of equal distances along the length directions to wrap the vertical angles of the pre-stacked silicon steel sheet group. It can be understood that: the horizontal angles of the upper yoke 24 and the lower yoke 25 in this embodiment are larger, and the gaps of the upper yoke 24 and the lower yoke 25 are larger than the first and second tip portions 211, 212 of the correspondingly connected middle column 21.

[0037] Third embodiment

[0038] like Figure 3 As shown, this embodiment also provides a comprehensive step-by-step core lamination structure, which hides the vertical angles of the left column 32 and the right column 33 by changing the distance between each silicon steel sheet in the silicon steel sheet group. The silicon steel sheet group 3 includes a middle column 31, a left column 32, a right column 33, an upper yoke sheet 34 and a lower yoke sheet 35, and the left column 32 and the right column 33 are arranged on the left and right sides of the middle column 31; the upper yoke sheet 34 and the lower yoke sheet 35 are arranged on the upper and lower sides of the middle column 31, and the middle column 31, the left column 32, the right column 33, the upper yoke sheet 34 and the lower yoke sheet 35 are all in contact and connected; between the middle column 31 and the left column 32 of each layer of silicon steel sheet group 3, and between the middle column 31 and the right column 33, an equal-sized space for placing the wire package is formed, and the upper yoke sheet 34 is provided with a positioning hole 341, which is used to cooperate with the positioning column, so as to facilitate the simultaneous insertion and positioning of multiple upper yoke sheets 34, thereby improving the efficiency of sheet installation.

[0039] The left column 32 and the right column 33 are extended by a set distance in the vertical direction, and the upper yoke sheet 34 and the lower yoke sheet 35 are shortened by a set distance in the horizontal direction, forming a silicon steel sheet unit without a horizontal angle. It can be understood that: by changing the lamination distance between the silicon steel sheets, the upper yoke sheet 34 and the lower yoke sheet 35 are extended in the horizontal direction, and the distance between the left column 32 and the right column 33 is shortened in the vertical direction, so that the angles of the left column 32 and the right column 33 are hidden between the corresponding upper yoke sheet 34 and the lower yoke sheet 35.

[0040] A comprehensive stepping core stacking method comprises the following steps:

[0041] S1: pre-stack the middle column, left column, right column, upper yoke, and lower yoke with N pieces as one cycle;

[0042] Specifically, the middle column, the left column, the right column, the upper yoke piece, and the lower yoke piece are offset by a distance L along their respective length directions, so that the left column, the right column, the upper yoke piece, and the lower yoke piece overlap each other to form mutually perpendicular angles;

[0043] The left column and the right column are shortened by a set distance L along their respective length directions, and the upper yoke piece and the lower yoke piece are extended by a set distance L along their respective length directions, so that the corners of the left column and the right column are hidden between the corresponding upper yoke piece and the lower yoke piece;

[0044] The set distance L is Wherein, L represents the set distance, N represents the number of pre-stacked silicon wafers, and m represents the offset distance between each silicon wafer.

[0045] S2: Using the pre-stacked upper yoke piece as a positioning reference, stack the pre-stacked middle column, left column, right column and lower yoke piece in sequence;

[0046] S3: Taking the first layer of silicon steel sheet group formed at the bottom as the reference, stack the pre-stacked silicon steel sheet groups with gradually increasing sizes from bottom to top until the largest silicon steel sheet group in the center layer;

[0047] S4: With the largest silicon steel sheet group in the center layer as the symmetry center, continue to stack silicon steel sheet groups with gradually smaller sizes upwards until a symmetrical structure is formed.

[0048] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A comprehensive stepping core lamination structure, characterized in that: It comprises several layers of silicon steel sheet units, each layer of the silicon steel sheet units comprises N silicon steel sheet groups which are pre-stacked at intervals from each other, the silicon steel sheet group comprises a middle column, a left column, a right column, an upper yoke sheet and a lower yoke sheet, the left column and the right column are arranged on the left and right sides of the middle column; the upper yoke sheet and the lower yoke sheet are arranged on the upper and lower sides of the middle column, the middle column, the left column, the right column, the upper yoke sheet and the lower yoke sheet are all in contact and connected; the upper and lower ends of the middle column are provided with asymmetric tips, and the upper and lower yoke sheets are provided with notches corresponding to the tips at the connection between the middle column and the upper yoke sheet; The upper yoke pieces are stacked layer by layer in a longitudinal step-by-step stacking manner, and the lower yoke pieces are stacked layer by layer in a transverse step-by-step stacking manner, and the tips at the upper and lower ends of the middle column are inserted into the notches of the upper yoke piece and the lower yoke piece at intervals, respectively; The upper end of the middle column is provided with a first tip, which is a symmetrical structure. The lower end of the middle column is provided with a second tip, which is an asymmetrical structure. The angles at which the first tip and the second tip are separated from each other are both acute angles of the same angle.

2. The integrated stepping core lamination structure according to claim 1, characterized in that: The upper yoke piece is provided with a positioning hole.

3. The integrated stepping core lamination structure according to claim 1, characterized in that: The lamination spacing distance of the upper yoke plate arranged in a longitudinal stepping manner is equal to the lamination spacing distance of the lower yoke plate arranged in a transverse stepping manner.

4. The integrated stepping core lamination structure according to claim 1, characterized in that: The upper yoke sheet and the lower yoke sheet are both extended with equal widths along the length directions to wrap the vertical corners of the pre-stacked silicon steel sheet group.

5. The integrated stepping core lamination structure according to claim 1, characterized in that: The left column and the right column are extended by a set distance in the vertical direction, and the upper yoke sheet and the lower yoke sheet are shortened by a set distance in the horizontal direction, so as to form a silicon steel sheet unit without horizontal angles.

6. A core stacking method for the integrated step-by-step core stacking structure according to claim 1, characterized in that: The steps include: With N pieces as one cycle, the middle column, the left column, the right column, the upper yoke piece, and the lower yoke piece are pre-stacked; Using the pre-stacked upper yoke piece as a positioning reference, the pre-stacked middle column, left column, right column and lower yoke piece are stacked in sequence; Taking the first layer of silicon steel sheet group formed at the bottom as the reference, pre-stacked silicon steel sheet groups with gradually increasing sizes are stacked from bottom to top until the largest silicon steel sheet group in the center layer; With the largest silicon steel sheet group in the center layer as the symmetry center, silicon steel sheet groups with gradually smaller sizes continue to be stacked upwards until a symmetrical structure is formed.

7. A comprehensive stepping core stacking method according to claim 6, characterized in that: Taking N pieces as one cycle, the specific process of pre-stacking the middle column, the left column, the right column, the upper yoke piece, and the lower yoke piece is as follows: The middle column, the left column, the right column, the upper yoke piece, and the lower yoke piece are offset by a distance L along their respective length directions, so that the overlapped parts of the left column, the right column, the upper yoke piece, and the lower yoke piece form mutually perpendicular angles; The left column and the right column are shortened by a set distance L along their respective length directions, and the upper yoke piece and the lower yoke piece are extended by a set distance L along their respective length directions, so that the corners of the left column and the right column are hidden between the corresponding upper yoke piece and the lower yoke piece; The set distance L is Wherein, L represents the set distance, N represents the number of pre-stacked silicon wafers, and m represents the offset distance between each silicon wafer.

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