CN211579713U

CN211579713U - Novel automobile generator coiled iron core and discharging structure thereof

Info

Publication number: CN211579713U
Application number: CN201922473565.2U
Authority: CN
Inventors: 肖庆朋; 饶志辉
Original assignee: Jiangsu Lianbo Precision Technology Co ltd
Current assignee: Jiangsu Lianbo Precision Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-25
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a novel coiled iron core of automobile generator and a discharging structure thereof, comprising a continuously coiled spiral punching sheet, which is characterized in that the punching sheet comprises a strip-shaped main body and a comb-shaped bulge arranged in front of the strip-shaped main body, the comb-shaped bulge comprises a protruding part and a containing cavity which are sequentially arranged at intervals, the maximum width of the protruding part is d1, the maximum width of the containing cavity is d2, and the d1 is less than or equal to d 2; the front surface of the strip-shaped main body is provided with a plurality of depressions formed by punching, and the corresponding position of the back surface is provided with a bulge. Above-mentioned towards piece is adding the following row's of material mode of adoption during processing, arrange four towards pieces on single tablet, four two liang of punching pieces a set of setting in opposite directions, can adopt through this kind of arrangement mode to great saving raw and other materials, and promoted the blanking efficiency about fourfold.

Description

Novel automobile generator coiled iron core and discharging structure thereof

Technical Field

The utility model relates to a novel automobile power generation machine coiling formula iron core and arrange material structure thereof.

Background

A stator core and a rotor core in an automobile generator are both of a structure formed by overlapping a plurality of silicon steel stamped sheets with insulating coatings. For example, the application number CN201710259662.4 discloses a winding self-bonding stator and rotor iron core of an automobile generator, and a processing technology and equipment thereof, which well explain the defects in the prior art and the connection mode of punching sheets.

However, with the improvement of the existing process and the continuous improvement of the requirements of various large host plants on the automobile generator, the coiled iron core produced by the prior art can not meet the requirements gradually. Even if the periphery of the iron core is reinforced by welding, the phenomena of bulging in the middle of the punching sheets, air gaps among the punching sheets and the like cannot be completely avoided.

In addition, in the prior art, when punching sheets are punched, because the traditional punching sheet structure can not be stacked and punched, a large amount of waste materials are generated, and thus a large amount of waste of raw materials is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above prior art not enough, provide a novel automobile power generation machine coiling formula iron core and arrange the material structure.

A novel coiled iron core of an automobile generator comprises a continuously coiled spiral stamped sheet, wherein the stamped sheet comprises a strip-shaped main body and comb-shaped protrusions arranged in front of the strip-shaped main body, the comb-shaped protrusions comprise protruding parts and accommodating cavities which are sequentially arranged at intervals, the maximum width of the protruding parts is d1, the maximum width of the accommodating cavities is d2, and d1 is less than or equal to d 2; the front surface of the strip-shaped main body is provided with a plurality of depressions formed by punching, and the corresponding position of the back surface is provided with a bulge.

Preferably, the front end of the protruding part is provided with bilateral symmetry outer arc transition, and the tail part of the accommodating cavity is provided with corresponding inner arc transition.

Preferably, the recess is hemispherical in shape.

The novel material discharging structure of the coiled iron core of the automobile generator has the specific distribution mode that four punching sheets are arranged on a single material sheet, and the four punching sheets are arranged in a group of two punching sheets in opposite directions; between the same group of punching sheets, the protruding part of the punching sheet positioned above is clamped in the containing cavity of the punching sheet positioned below.

Preferably, the heads of the two punching sheets in the middle are level, the heads of the two punching sheets at the two ends are level, and the length of the two punching sheets in the middle exceeds that of the two material sheets at the two ends by 5-10 protruding parts. Through this setting, can make things convenient for personnel to peel off four towards pieces each other after the blanking. The person can directly hold the protruding length of the middle two punching sheets, and then easily separate the four punching sheets from each other.

Preferably, the central position of the depression in the punching sheet coincides with the central line of the protruding part.

Has the advantages that:

the punching sheet is provided with the protrusions and the depressions, the protrusions and the depressions are synchronously machined and completed during punching, when the punching sheets on different layers are stacked, the depressions of the punching sheets on the upper end are matched with the protrusions of the punching sheets on the lower end, the contact area between the punching sheets can be increased (the larger the contact area is, the more the adhesive between the adjacent punching sheets is), and the connection strength between the upper lamination punching sheet and the lower lamination punching sheet is enhanced.

The advantage that set up arch and sunken on the punching sheet not only reflects in promoting the superimposed add intensity of iron core, still is favorable to the row material blanking of punching sheet. The traditional punching structure can not be blanked according to the arrangement mode of saving materials, and the reason is that when blanking, the two opposite punching sheets in the middle part are easy to misplace due to the fact that no supporting point exists, and therefore the punching sheets are not standard in size, poor in shape and the like.

But through increase protruding and sunken mode on the piece of punching, when the blanking, the sunken card of punching the piece lower surface just in time goes into in the die cavity of die under to the effectual phenomenon that two pieces of punching in the middle of preventing take place to shift makes this kind of arrangement mode can adopt, thereby great saving raw and other materials, and promoted about the blanking efficiency quadruple.

Drawings

FIG. 1 is a schematic view of a stacked core;

FIG. 2 is a schematic top surface view of a punch;

FIG. 3 is a schematic view of the lower surface of the punch;

FIG. 4 is a schematic diagram of a discharge structure of the punched piece;

FIG. 5 is a front view of a segment of a punch;

1. punching piece 2, sunken 3, protruding 4, inner arc transition 5, outer arc transition.

Detailed Description

In order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.

As shown in fig. 1-5, a novel coiled iron core of an automobile generator includes a continuously coiled helical stamped sheet 1, where the stamped sheet 1 includes a strip-shaped main body and comb-shaped protrusions arranged in front of the strip-shaped main body, the comb-shaped protrusions include protrusions and accommodating cavities arranged at intervals in sequence, the maximum width of the protrusion is d1, the maximum width of the accommodating cavity is d2, and d1 is less than or equal to d 2; the front of long form main part is equipped with the sunken 2 that a plurality of punching press formed, and sunken 2's shape is the hemisphere, and sunken 2 reverse side's corresponding position is equipped with arch 3, and sunken 2's central point puts and the central line coincidence of protruding portion mutually.

The front end of the protruding part is provided with bilateral symmetry outer arc transition 5, and the tail part of the accommodating cavity is provided with corresponding inner arc transition 4.

The specific material discharging mode is shown in fig. 4, four punching sheets 1 are arranged on a single material sheet, and the four punching sheets 1 are arranged in a group of every two punching sheets in opposite directions; between the same group of punching sheets 1, the protruding part of the punching sheet 1 positioned above is clamped in the containing cavity of the punching sheet 1 positioned below, the heads of the two punching sheets 1 in the middle are level, the heads of the two punching sheets 1 positioned at the two ends are level, and the two punching sheets 1 in the middle exceed the lengths of the two protruding parts of the two material sheets positioned at the two ends by 5-10.

When the punching is carried out for one time, four punching sheets 1 are simultaneously punched on a single material sheet, and the punching of the concave 2 and the convex 3 is completed (the punching can be completed only by adding the concave and convex characteristics matched with each other on the upper and the lower punching dies).

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The novel coiled iron core of the automobile generator comprises a continuously coiled spiral stamped sheet and is characterized in that the stamped sheet comprises a strip-shaped main body and comb-shaped protrusions arranged in front of the strip-shaped main body, the comb-shaped protrusions comprise protruding parts and containing cavities which are sequentially arranged at intervals, the maximum width of the protruding parts is d1, the maximum width of the containing cavities is d2, and d1 is less than or equal to d 2; the front surface of the strip-shaped main body is provided with a plurality of depressions formed by punching, and the corresponding position of the back surface is provided with a bulge.

2. The novel coiled iron core of the automobile generator as claimed in claim 1, wherein the front end of the protruding part is provided with bilateral symmetry outer arc transition, and the tail part of the accommodating cavity is provided with corresponding inner arc transition.

3. The wound core for a novel automobile generator according to claim 1, wherein the recess is shaped like a hemisphere.

4. A novel discharging structure of a coiled iron core of an automobile generator comprises the novel coiled iron core of the automobile generator as claimed in any one of claims 1 to 3, and is characterized in that four punching sheets are arranged on a single material sheet, and the four punching sheets are oppositely arranged in pairs in a group; between the same group of punching sheets, the protruding part of the punching sheet positioned above is clamped in the containing cavity of the punching sheet positioned below.

5. The novel discharging structure for the coiled iron core of the automobile generator as claimed in claim 4, wherein the heads of the two punching sheets in the middle are flush, the heads of the two punching sheets at the two ends are flush, and the length of the two punching sheets in the middle exceeds the length of the two material sheets at the two ends by 5-10 protruding parts.

6. The novel discharging structure for the coiled iron core of the automobile generator as claimed in claim 4, wherein the central position of the recess in the stamped steel coincides with the central line of the protrusion.