Anti-jumping mold for iron core sheet molding

Abstract

The utility model discloses an anti-jumping die for iron chip forming, which comprises a blanking female die, and at least one anti-jumping bulge is arranged on the inner wall of a cutting edge of the blanking female die; and the width of the anti-jumping bulge is matched with the distance between two adjacent rotor tooth punching sheets of the rotor punching sheet. Due to the arrangement of the anti-bouncing protrusions, sufficient friction force exists between the waste and the blanking female die, the waste cannot be adsorbed on the punch to ascend along with the punch, the purpose of preventing the waste from being adsorbed on the punch or bouncing back to a machined material is achieved, and the blanking female die has the advantages of being simple in structure, easy to implement and capable of improving production quality and production reliability. The anti-bouncing protrusions are of inverted cone structures, the teeth are prevented from deviating towards the circle center direction through the inverted cone structures, and meanwhile the teeth can be clamped by the female die and prevented from being adsorbed to the surface of the female die by the blanking male die.

Description

Technical Field

[0001] This utility model belongs to the field of stamping production technology, specifically relating to an anti-jumping mold for forming iron chips. Background Technology

[0002] With the rapid development of national industry, the mold industry, as a fundamental industry, needs to keep pace with industrial development. Therefore, the lifespan and automation level of molds need continuous improvement. In the field of stamping molds, punches develop magnetism during long-term blanking processes. Side-cut punches attract scrap generated during blanking. When the punch separates from the die, the scrap can adhere to the side-cut punch or bounce back onto the workpiece, leading to uneven blanking, mold damage, and workpiece damage. Furthermore, if the product's shape during blanking is not entirely enclosed, the blanking die cannot effectively enclose the product on all sides. The product can easily be sucked out of the die surface by the blanking punch during blanking, preventing normal stamping. To prevent scrap from bouncing back, some methods involve spot welding inside the die, while others use small-gap straight-section dies. However, these methods significantly reduce the mold's lifespan. Therefore, obtaining an anti-bouncing mold for iron chip forming that overcomes these defects is crucial. Utility Model Content

[0003] To solve at least one of the above-mentioned technical problems, this utility model provides an anti-jumping mold for forming iron chips, including a blanking die, wherein at least one anti-jumping protrusion is provided on the inner wall of the cutting edge of the blanking die; and an anti-jumping groove is formed between each anti-jumping protrusion for tight fitting with the outer end of the teeth of the iron chip.

[0004] The shape of the anti-jump protrusion is adapted to the spacing between two adjacent rotor tooth laminations, that is, it is snapped between the two rotor tooth laminations.

[0005] The forming channel of the blanking die is a circular channel, and multiple anti-jump protrusions are evenly arranged in a ring array on the inner wall of the circular channel, with the two ends of each anti-jump protrusion extending to the two ends of the circular channel respectively.

[0006] Through the above technical solution, due to the setting of the anti-jump protrusion, there is sufficient friction between the waste and the blanking die, so that the waste cannot be adsorbed on the punch and rise with the punch, thereby preventing the waste from adsorbing on the punch or jumping back onto the processed material. It has the advantages of simple structure, easy implementation, improved production quality and production reliability.

[0007] There are two types of rotor laminations. One type includes a first rotor lamination, and the first rotor tooth lamination of the first rotor lamination is connected to the first rotor lamination via a first connector. The two opposite sides of the anti-jump protrusion in the width direction are inclined surfaces, so that the anti-jump protrusion 2 forms an inverted cone structure.

[0008] Secondly, the rotor lamination includes a second rotor lamination, at least one second rotor tooth lamination of the second rotor lamination is disconnected from the second rotor lamination, and at least one third rotor tooth lamination is connected to the second rotor lamination through a second connector. The anti-jump protrusion is provided with an inclined surface to form an inverted cone structure, so that the second rotor tooth lamination is prevented from shifting towards the center direction by the inverted cone structure when blanking, and at the same time, the die can hold the tooth to prevent it from being absorbed by the blanking punch onto the die surface.

[0009] When stamping the stator of the motor: the outer wall width b of the anti-jump protrusion is greater than the width a of the connection portion a between the anti-jump protrusion and the inner wall of the cutting edge of the blanking die. a = 3mm, b = a + 0.01~0.02mm, and the height h of the anti-jump protrusion is 0.5mm.

[0010] The anti-jump protrusion is strip-shaped and parallel to the axis of the blanking die.

[0011] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, not only has a good anti-jumping effect on the punch, but also can accurately position the punch. Attached Figure Description

[0012] Figure 1 This is a top view of the blanking die of this utility model;

[0013] Figure 2 This is a schematic diagram illustrating the use of this utility model;

[0014] Figure 3 A schematic diagram of the rotor lamination structure according to one embodiment;

[0015] Figure 4 A schematic diagram of the rotor lamination structure of the second embodiment is shown;

[0016] Figure 5 for Figure 2 Enlarged view of point A;

[0017] Figure 6 This is a schematic diagram of the structure of some rotor laminations;

[0018] Figure label:

[0019] 1. Blanking die; 2. Anti-jumping protrusion; 3. Spacing; 4. Angled surface;

[0020] 501 First rotor lamination; 502 First rotor tooth lamination; 503 First connecting piece;

[0021] 601 Second rotor lamination; 602 Second rotor tooth lamination; 603 Disconnected; 604 Third rotor tooth lamination; 605 Second connecting piece;

[0022] 7. Inverted cone shape; 8. Anti-slip design. Detailed Implementation

[0023] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model concept, and are only a part of the embodiments of this utility model. The specific and direct description of related structures is only for the convenience of understanding this utility model, and the specific features do not necessarily or directly limit the scope of implementation of this utility model.

[0024] Referring to the accompanying drawings, the present invention adopts the following technical solution: the present invention provides an anti-jumping mold for forming iron chips, including a blanking die 1, wherein at least one anti-jumping protrusion 2 is provided on the inner wall of the cutting edge of the blanking die 1; and an anti-jumping groove 8 is formed between each anti-jumping protrusion 2 for tight fitting with the outer end of the teeth of the iron chip.

[0025] The shape of the anti-jumping protrusion 2 is adapted to the spacing 3 between two adjacent rotor tooth laminations, that is, it is snapped between the two rotor tooth laminations.

[0026] The forming channel of the blanking die 1 is a circular channel, and a plurality of anti-jump protrusions 2 are evenly arranged in a ring array on the inner wall of the circular channel, with the two ends of each anti-jump protrusion 2 extending to the two ends of the circular channel respectively.

[0027] Through the above technical solution, due to the setting of the anti-jump protrusion 2, there is sufficient friction between the waste material and the blanking die 1, so that the waste material cannot be adsorbed on the punch and rise with the punch, thereby preventing the waste material from adsorbing on the punch or jumping back onto the processed material. It has the advantages of simple structure, easy implementation, improved production quality and production reliability.

[0028] There are two types of rotor laminations. One type includes a first rotor lamination 501, and a first rotor tooth lamination 502 connected to the first rotor lamination 501 via a first connector 503. The two opposite sides of the anti-jump protrusion 2 in the width direction are inclined surfaces 4, so that the anti-jump protrusion 2 forms an inverted cone structure.

[0029] Secondly, the rotor lamination includes a second rotor lamination 601, at least one second rotor tooth lamination 602 of the second rotor lamination 601 is disconnected from the second rotor lamination 601 by 603, and at least one third rotor tooth lamination 604 is connected to the second rotor lamination 601 through a second connector 605. The anti-jump protrusion 2 is provided with a slope 4 to form an inverted cone structure, so that the second rotor tooth lamination 602 is prevented from shifting towards the center direction by the inverted cone structure when blanking, and at the same time, the die can hold the tooth to prevent it from being absorbed by the blanking punch onto the die surface.

[0030] The outer side of the second rotor lamination 601 forms an inverted cone shape 7.

[0031] When stamping the stator of the motor: the outer wall width b of the anti-jump protrusion 2 is greater than the width a of the connection portion a between the anti-jump protrusion 2 and the inner wall of the cutting edge of the blanking die 1. a = 3mm, b = a + 0.01~0.02mm, and the height h of the anti-jump protrusion 2 is 0.5mm.

[0032] The anti-jumping protrusion 2 is strip-shaped and parallel to the axis of the blanking die 1.

[0033] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, not only has a good anti-jumping effect on the punch, but also can accurately position the punch.

[0034] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0035] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A mold for preventing iron chip from jumping upwards, characterized in that: It includes a blanking die (1), and the inner wall of the blanking die (1) is provided with a plurality of anti-jumping protrusions (2) extending along the height direction of the blanking die (1); Anti-jumping grooves (8) are formed between each anti-jumping protrusion (2) for tight fitting with the outer end of the tooth of the iron chip; the forming channel of the blanking die (1) is a circular channel, and multiple anti-jumping protrusions (2) are evenly arranged in a ring array on the inner wall of the circular channel, and the two ends of each anti-jumping protrusion (2) extend to the two ends of the circular channel respectively; the two opposite sides of the anti-jumping protrusion (2) in the width direction are inclined surfaces (4) so ​​that the anti-jumping protrusion (2) forms an inverted cone structure; the width b of the outer wall of the anti-jumping protrusion (2) is greater than the width a of the connection part a between the anti-jumping protrusion (2) and the inner wall of the cutting edge of the blanking die (1).

2. The anti-jumping mold for iron chip forming according to claim 1, characterized in that: a = 3mm, b = a + 0.01~0.02mm, and the height h of the anti-jump protrusion (2) is 0.5mm.

3. The anti-jumping mold for iron chip forming according to claim 1, characterized in that, The anti-jumping protrusion (2) is strip-shaped and parallel to the axis of the blanking die (1).

4. The anti-jumping mold for iron chip forming according to claim 1, characterized in that: The rotor lamination of the iron chip includes a first rotor lamination (501), and the first rotor tooth lamination (502) of the first rotor lamination (501) is connected to the first rotor lamination (501) through a first connector (503).

5. The anti-jumping mold for iron chip forming according to claim 1, characterized in that: The rotor lamination of the iron chip includes a second rotor lamination (601), at least one second rotor tooth lamination (602) of the second rotor lamination (601) is disconnected from the second rotor lamination (601) (603), and at least one third rotor tooth lamination (604) is connected to the second rotor lamination (601) through a second connector (605). The anti-jump protrusion (2) is provided with a slope (4) to form an inverted cone structure, so that the second rotor tooth lamination (602) is prevented from deviating towards the center direction by the inverted cone structure when the material is dropped.

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