Die for stator sheet production

Abstract

The utility model discloses a die for stator sheet production, which comprises an upper die and a lower die which are oppositely arranged and used for punch forming of a stator sheet, the upper die comprises an upper die holder, a die handle is arranged at the upper end of the upper die holder, a connecting plate is arranged at the lower end of the upper die holder, and a blanking female die is arranged at the lower end of the connecting plate; the lower die comprises a lower die base, a lower base plate is arranged on the lower die base, a fixing plate is arranged above the lower base plate, a concave-convex die is arranged on the fixing plate, the concave-convex die corresponds to the blanking concave die in position, a plurality of convex point convex die bodies are arranged in the concave-convex die, a plurality of convex point ejector rods are arranged in the lower die base, and the convex point ejector rods correspond to the convex point convex die bodies in position. The salient point ejector rod is located below the salient point male die body and matched with the salient point male die body in an inserted mode, and the salient point male die body is used for forming a salient point body on a stator piece. According to the utility model, the stator sheet with salient points is integrally punched and formed through the composite die, so that the production efficiency is improved, the production cost is reduced, the service life of the die is prolonged, and the space required by the die is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stator sheet production, in particular to a mold for stator sheet production. Background Art

[0002] The stator core is an important component of the motor magnetic circuit. Its main part is composed of stacked stator sheets. Currently, the stator sheets are stamped by corresponding molds. For stator sheets with protrusions, the protrusions need to be machined after stamping. The process is numerous and complicated, which affects the production efficiency. At the same time, the cost is high and there are shortcomings. Utility Model Content

[0003] The utility model aims to avoid the shortcomings of the prior art and provides an integrally formed mold for producing stator sheets.

[0004] The utility model solves the technical problem by adopting the following technical scheme: a mold for producing stator sheets, comprising an upper mold and a lower mold arranged relatively to each other, for stamping the stator sheets, the upper mold comprising an upper mold base, a mold handle being arranged at the upper end of the upper mold base, a connecting plate being arranged at the lower end of the upper mold base, and a blanking die being arranged at the lower end of the connecting plate;

[0005] The lower die includes a lower die seat, a lower pad is arranged on the lower die seat, a fixing plate is arranged above the lower pad, a concave and convex die is arranged on the fixing plate, the concave and convex die correspond to the position of the blanking die, a plurality of convex die bodies are arranged in the concave and convex die, a plurality of convex push rods are arranged in the lower die seat, the convex push rods are located below the convex die body and are plugged in, and the convex die body is used to form a convex body on the stator sheet.

[0006] In several embodiments, a plurality of hanging rings are provided on both sides of the upper die base and the lower die base, and guide post holes are provided on the upper die base and the lower die base.

[0007] In several embodiments, a plurality of first mounting holes are provided on the lower pad, and the first mounting holes are arranged in a ring shape, and the first mounting holes are for the convex punch body and / or the convex ejector rod to penetrate.

[0008] In several embodiments, a receiving hole is provided on the fixing plate, two first positioning recesses are provided on the inner wall of the receiving hole, and the receiving hole is used to receive part of the concave and convex molds.

[0009] In several embodiments, two second positioning recesses are provided on the side of the concave-convex mold, the positions of the first positioning recess and the second positioning recess correspond to each other, and a limiting column is inserted between the first positioning recess and the second positioning recess.

[0010] In several embodiments, the concave and convex molds are provided with a stator cavity and a convex cavity, the convex cavity corresponds to the convex punch body, and the stator cavity is used for shaping the shape of the stator sheet.

[0011] In several embodiments, the convex point punch body includes a first base column, a first connecting handle is provided on the first base column, a first protruding arm is provided on the first connecting handle, the first protruding arm is eccentrically provided on the first connecting handle, and a first clamping groove is provided on the first base column.

[0012] In several embodiments, the raised point push rod includes a second base column, a second connecting handle is provided on the second base column, a second protruding arm is provided on the second connecting handle, the second protruding arm coincides with the center line of the second connecting handle, and the second protruding arm is plugged into and fits with the first snap-in groove.

[0013] And, a production process using the above-mentioned stator sheet production mold includes the following steps:

[0014] S100, selecting a convex punch body and a convex push rod of corresponding specifications according to the specifications of the stator sheet, plugging the convex punch body and the convex push rod and then inserting them from below the lower die seat until they cannot enter and move forward;

[0015] S200, the silicon steel sheet is fed into a space between an upper die and a lower die for stamping, so as to form a stator sheet with convex points.

[0016] The beneficial effects of the utility model are:

[0017] The utility model realizes integrated stamping and forming of the stator sheet with convex points by using a composite mold, thereby improving production efficiency, reducing production costs, prolonging mold life, and reducing space required for the mold.

[0018] The utility model is adapted to the molding of convex points of different specifications through the matching structure of the convex point punch body and the convex point ejector rod, and is convenient for replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are for illustrative purposes only of selected embodiments and do not represent all possible implementations, and should not be considered to limit the scope of the present invention.

[0020] Figure 1 The overall structure of the mold for producing the stator segments in Example 1 is schematically shown;

[0021] Figure 2 Schematically shows Figure 1 The top view structure of the middle and lower die base;

[0022] Figure 3 Schematically shows Figure 1 The top view structure of the middle and lower pads;

[0023] Figure 4 Schematically shows Figure 1 The top view structure of the middle fixed plate;

[0024] Figure 5 Schematically shows Figure 1 The top view structure of the concave and convex mold;

[0025] Figure 6 Schematically shows Figure 1 The top view structure of the blanking die;

[0026] Figure 7 Schematically shows Figure 1 The top view structure of the middle and upper die base;

[0027] Figure 8 Schematically shows Figure 1 The side view and front view structure of the central convex point punch body;

[0028] Fig. 9 Schematically shows Figure 1 The front view structure of the middle convex point ejector;

[0029] Fig.10 The structure of the stator sheet in Embodiment 1 is schematically shown. DETAILED DESCRIPTION

[0030] Below, embodiments of the present invention are described in detail with reference to the accompanying drawings. To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the accompanying drawings is not intended to limit the scope of the present invention for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] like Figure 1-Figure 10 As shown, the stator sheet production mold provided in this embodiment is used to produce a stator sheet 100 with a protrusion 110, which is mainly composed of an upper mold 10 and a lower mold 20 arranged opposite to each other. The silicon steel sheet is fed between the upper mold 10 and the lower mold 20 for stamping.

[0034] Specifically, the upper die 10 includes an upper die base 11, a die handle 12 is provided at the upper end of the upper die base 11, a connecting plate 13 is provided at the lower end of the upper die base 11, a blanking die 14 is provided at the lower end of the connecting plate 13, a plurality of lifting rings 31 are provided on both sides of the upper die base 11, the lifting rings 31 are used for lifting, and a guide column hole 32 is provided on the upper die base 11, and the guide column hole 32 is used for the guide column to pass through.

[0035] In addition, the lower die 20 includes a lower die base 21, a lower pad 22 is arranged on the lower die base 21, a fixing plate 23 is arranged above the lower pad 22, a concave-convex die 24 is arranged on the fixing plate 23, the concave-convex die 24 corresponds to the position of the blanking die 14, a plurality of convex die bodies 25 are arranged in the concave-convex die 24, a plurality of convex push rods 26 are arranged in the lower die base 21, the convex push rods 26 are located below the convex die body 25 and are plugged in, and the convex die body 25 is used to form a convex body 110 on the stator sheet 100.

[0036] In addition, a plurality of first mounting holes 221 are arranged on the lower pad 22, and the first mounting holes 221 are arranged in a ring shape. The first mounting holes 221 are for the convex punch body 25 and / or the convex push rod 26 to pass through, and the lower mold base 21 is correspondingly provided with second mounting holes corresponding to the positions of the first mounting holes and connected.

[0037] Here, the convex punch body 25 includes a first base column 251, a first connecting handle 252 is provided on the first base column 251, a first protruding arm 253 is provided on the first connecting handle 252, the first protruding arm 253 is eccentrically provided on the first connecting handle 252, and a first clamping groove 254 is provided on the first base column 251.

[0038] Correspondingly, the raised point push rod 26 includes a second base column 261, a second connecting handle 262 is provided on the second base column 261, a second protruding arm 263 is provided on the second connecting handle 262, the second protruding arm 263 coincides with the center line of the second connecting handle 262, the second protruding arm 263 is plugged into the first snap-fit ​​groove 254, and a snap-fit ​​groove is also provided on the second base column 261.

[0039] Here, the first protruding arm 253 and the second protruding arm 263 are both straight plate structures, and one side of the connection between the first connecting handle 252 and the first protruding arm 253 has an inward depression, and both sides of the connection between the second connecting handle 262 and the second protruding arm 263 are inwardly depressed.

[0040] In addition, a receiving hole 231 is provided on the fixing plate 23, and two first positioning recesses 232 are provided on the inner wall of the receiving hole 231. The receiving hole 231 is used to accommodate part of the lower concave-convex mold 24, and two second positioning recesses 241 are provided on the side of the concave-convex mold 24. The positions of the first positioning recess 232 and the second positioning recess 241 correspond to each other, and a limiting column is inserted between the first positioning recess 232 and the second positioning recess 241. The first positioning recess 232 and the second positioning recess 241 cooperate to form a cylindrical hole structure, and the rotation between the two can be limited after the limiting column is inserted.

[0041] Furthermore, the concave-convex mold 24 is provided with a stator cavity 201 and a convex cavity 202, wherein the convex cavity 202 corresponds to the convex convex mold body 25, and the stator cavity 201 cooperates with the convex mold of the corresponding shape in the upper mold to shape the stator sheet.

[0042] When the utility model is used, the convex punch body 25 and the convex push rod 26 of the corresponding specifications are first selected according to the specifications of the stator sheet, and the convex punch body 25 and the convex push rod 26 are inserted and inserted from the bottom of the lower die seat 21 until they cannot enter and move forward. During the pushing process, a corresponding plate-shaped tool is used to insert the second bottom column 261 of the convex push rod 26, and then it is pushed upward, and the pin is inserted to fix it, and then the silicon steel sheet is sent between the upper die 10 and the lower die 20 for stamping to realize the forming of the stator sheet with convex points.

[0043] All the methods described herein can be performed in any suitable order. Any and all examples used, or exemplary language provided herein (such as "for example") are merely to better illustrate the present invention, and are not intended to limit the scope of the present invention, unless the claims are included. The language in the detailed description should not be understood as indicating any essential factors for practicing the present invention that are not claimed.

[0044] The present invention describes preferred embodiments, including the best way to carry out the present invention known to the inventor. Of course, variations of these preferred embodiments will be apparent to those skilled in the art. The inventors anticipate that skilled artisans may use such variations as appropriate, and the inventors point out that the present invention may be implemented in other ways than those specifically described herein. Therefore, the present invention includes all improvements included in the spirit and scope of the present invention as defined by the claims. Moreover, unless otherwise stated or clearly contradictory in content, the present invention includes any of the above factors and all possible variations thereof.

Claims

1. A mold for producing a stator sheet, comprising an upper mold (10) and a lower mold (20) arranged opposite to each other, for stamping and forming the stator sheet, characterized in that: The upper die (10) comprises an upper die seat (11), a die handle (12) is arranged at the upper end of the upper die seat (11), a connecting plate (13) is arranged at the lower end of the upper die seat (11), and a blanking die (14) is arranged at the lower end of the connecting plate (13); The lower die (20) comprises a lower die seat (21), a lower pad (22) is arranged on the lower die seat (21), a fixing plate (23) is arranged above the lower pad (22), a concave-convex die (24) is arranged on the fixing plate (23), the concave-convex die (24) corresponds to the position of the blanking die (14), a plurality of convex die bodies (25) are arranged in the concave-convex die (24), a plurality of convex push rods (26) are arranged in the lower die seat (21), the convex push rods (26) are located below the convex die bodies (25) and are plug-fitted, and the convex die bodies (25) are used to form convex bodies (110) on the stator sheets (100).

2. A stator sheet production mold according to claim 1, characterized in that: A plurality of hanging rings (31) are provided on both sides of the upper die seat (11) and the lower die seat (21), and guide column holes (32) are provided on both the upper die seat (11) and the lower die seat (21).

3. A stator sheet production mold according to claim 1, characterized in that: The lower pad (22) is provided with a plurality of first mounting holes (221), the first mounting holes (221) being arranged in a ring-shaped manner, and the first mounting holes (221) are for the convex point punch body (25) and / or the convex point ejector rod (26) to penetrate.

4. A stator sheet production mold according to claim 1, characterized in that: The fixing plate (23) is provided with a receiving hole (231), the inner wall of the receiving hole (231) is provided with two first positioning recesses (232), and the receiving hole (231) is used to receive part of the concave and convex molds (24).

5. A stator sheet production mold according to claim 4, characterized in that: Two second positioning recesses (241) are arranged on the side of the concave-convex mold (24); the positions of the first positioning recess (232) and the second positioning recess (241) correspond to each other; and a limiting column is inserted between the first positioning recess (232) and the second positioning recess (241).

6. A stator sheet production mold according to claim 1, characterized in that: The concave-convex mold (24) is provided with a stator mold cavity (201) and a convex mold cavity (202), the convex mold cavity (202) corresponds to the convex mold body (25), and the stator mold cavity (201) is used for shaping the outer shape of the stator sheet.

7. A stator sheet production mold according to claim 1, characterized in that: The convex point punch body (25) comprises a first base column (251), a first connecting handle (252) is arranged on the first base column (251), a first protruding arm (253) is arranged on the first connecting handle (252), the first protruding arm (253) is eccentrically arranged on the first connecting handle (252), and a first clamping groove (254) is arranged on the first base column (251).

8. A stator sheet production mold according to claim 7, characterized in that: The convex point push rod (26) comprises a second base column (261), a second connecting handle (262) is arranged on the second base column (261), a second convex arm (263) is arranged on the second connecting handle (262), the second convex arm (263) coincides with the center line of the second connecting handle (262), and the second convex arm (263) is plug-fitted with the first clamping groove (254).

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