Motor iron core stamping progressive die

Abstract

The utility model discloses a stamping progressive die for a motor iron core, which belongs to the field of motor iron cores and comprises an upper die and a lower die, the upper die comprises a stamping plate, the stamping progressive die for the motor iron core further comprises a stock bearing plate, a plurality of guide plates and a baffle, the stock bearing plate is fixed on the lower die and extends out from the edge of the lower die, and the baffle is fixed on the lower die. The multiple guide plates are fixed to the two sides of the material bearing plate respectively and form two rows, a stamping area is formed between the two rows of guide plates, the stamping plate is located above the stamping area, the number of each row of guide plates is multiple, a gap is formed between every two adjacent guide plates in each row, the number of the baffles is two, and the two baffles are fixed to the two guide plates respectively. The baffle is located on one side of the stamping area, the projection of the top end of the baffle in the vertical direction is located on the stamping plate, and through the design, a material belt located in the stamping area is located between the two rows of guide plates during stamping; the baffle blocks sundries outside the stamping area and prevents the sundries from entering the stamping area to affect the stamping precision.

Description

Technical Field

[0001] The utility model relates to the field of motor cores, in particular to a progressive die for stamping motor cores. Background Art

[0002] A progressive die (also called a continuous die) consists of multiple stations. Each station is associated in sequence to complete different processes, and a series of different stamping processes are completed in one stroke of the punching press. After one stroke is completed, the material is moved forward by a fixed pitch by the feeder of the punching press. In this way, multiple processes can be completed on a set of dies, generally including punching, blanking, bending, trimming, stretching, and so on.

[0003] The stator laminations and rotor laminations of the motor core are both formed by stamping. During the stamping process, due to the fast stamping speed and large punching force, the strip is prone to swing, resulting in misalignment or low stamping accuracy during stamping, which affects the stamping quality of the laminations. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, one of the purposes of the present utility model is to provide a progressive die for stamping motor cores in which the strip does not swing.

[0005] One of the purposes of the present utility model is achieved by adopting the following technical solutions:

[0006] A progressive die for stamping motor cores includes an upper die and a lower die. The upper die includes a stamping plate. The progressive die for stamping motor cores further includes a stock plate, a guide plate, and a baffle. The stock plate is fixed to the lower die and extends out from the edge of the lower die. The number of the guide plates is multiple, and the multiple guide plates are respectively fixed on both sides of the stock plate. The multiple guide plates form two rows, and a stamping area is formed between the two rows of guide plates. The stamping plate is located above the stamping area. The number of the guide plates in each row is multiple, and a gap is formed between two adjacent guide plates in each row. The number of the baffles is two, and the two baffles are respectively fixed to the two guide plates. The baffles are located on one side of the stamping area, and the projection of the top end of the baffle in the vertical direction is located on the stamping plate.

[0007] Further, the guide plate includes a main body and a first guiding portion extending from the main body. The first guiding portion is inclined and extends to the stock plate.

[0008] Further, in the cross-section along the vertical direction, the first guiding portions of the two guide plates are in a V shape.

[0009] Further, the guide plates at the end of each row are further provided with second guiding portions. The second guiding portions are inclined, and along the feeding direction, the two second guiding portions are in a V shape.

[0010] Further, the two rows of the guide plates extend from the edge of the lower die and are located on the material receiving plate.

[0011] Further, each of the baffle plates includes a fixing portion and a stopping portion. The stopping portion extends from the fixing portion and is perpendicular to the fixing portion. The fixing portion is fixed to the guide plate. The stopping portion extends in the vertical direction and is located at the edge of the stamping area.

[0012] Further, each of the baffle plates further includes an extending portion. The extending portion extends from one end of the fixing portion away from the stopping portion. The extending portion forms an obtuse angle with the fixing portion.

[0013] Further, the extending portion is located at the end of the guide plate.

[0014] Further, the material receiving plate and the lower die are provided with blanking holes, and the blanking holes are located in the stamping area.

[0015] Further, the lower die is further provided with an air duct. The air duct is connected to an external air source. The air duct is communicated with the blanking hole. The waste material in the blanking hole is washed away by the gas in the air duct.

[0016] Compared with the prior art, the progressive die for stamping the motor core of the present utility model further includes a material receiving plate, guide plates and baffle plates. The material receiving plate is fixed to the lower die and extends from the edge of the lower die. The number of the guide plates is multiple. The multiple guide plates are respectively fixed on both sides of the material receiving plate. The multiple guide plates form two rows. A stamping area is formed between the two rows of guide plates. The stamping plate is located above the stamping area. The number of guide plates in each row is multiple. A gap is formed between two adjacent guide plates in each row. The number of baffle plates is two. The two baffle plates are respectively fixed to the two guide plates. The baffle plates are located on one side of the stamping area. The projection of the top end of the baffle plate in the vertical direction is located on the stamping plate. Through the above design, the strip located in the stamping area is positioned between the two rows of guide plates during stamping; the baffle plates block the sundries outside the stamping area to prevent the sundries from entering the stamping area and affecting the stamping accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of the progressive die for stamping the motor core of the present utility model;

[0018] Figure 2 is Figure 1 a top view of the progressive die for stamping the motor core of

[0019] Figure 3 is Figure 2 an enlarged view of part A of the progressive die for stamping the motor core of

[0020] In the figure: 10, upper die; 11, upper die base; 12, stamping plate; 13, fastener; 20, lower die; 21, blanking hole; 22, air duct; 30, material supporting plate; 40, guide plate; 41, main body; 42, first guiding part; 43, second guiding part; 50, baffle plate; 51, stop part; 52, fixing part; 53, extending part. Detailed implementation manners

[0021] Next, 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 a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there can also be another intermediate component through which it is fixed. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] Please refer to Figures 1 to 3 , the progressive die for stamping motor cores includes an upper die 10, a lower die 20, a material supporting plate 30, a guide plate 40 and a baffle plate 50.

[0025] The upper die 10 includes an upper die base 11, a stamping plate 12, and fasteners 13. The upper die base 11 and the stamping plate 12 are fixedly connected by the fasteners 13. The upper die base 11 and the stamping plate 12 are parallel to each other and arranged at intervals. A stamping surface is provided on the side of the stamping plate 12 away from the upper die base 11. In this embodiment, the motor core stamping progressive die is used to stamp rotor or stator laminations, and it is a high-speed stamping with a stamping speed reaching 1000 SPM. The height of the upper die base 11 is 40 - 60 mm. Preferably, the height of the upper die base 11 is 50 mm, which is less than the height of the upper die base in the prior art, reducing the weight of the upper die 10 and enabling the stamping speed of the motor core stamping progressive die to be increased.

[0026] The lower die 20 is located below the upper die 10. A working surface is provided on the lower die 20, and a blanking hole 21 is provided on the working surface in the vertical direction. The blanking hole 21 is used for the blanking of the stamped waste. To prevent the waste from getting stuck in the blanking hole 21, an air duct 22 is provided on the lower die 20. One end of the air duct 22 is connected to an external air source, and the other end of the air duct 22 communicates with the blanking hole 21. The compressed air from the external air source impacts the waste in the blanking hole 21 through the air duct 22 to prevent the waste from getting stuck in the blanking hole 21.

[0027] The material supporting plate 30 is fixed to the lower die 20, and the material supporting plate 30 is used to support the material. The length of the material supporting plate 30 is greater than the length of the lower die 20, and both ends of the material supporting plate 30 extend out from both ends of the lower die 20 respectively.

[0028] The number of guide plates 40 is multiple. The multiple guide plates 40 are fixed on both sides of the material supporting plate 30 and arranged in two rows. A stamping area is formed between the two rows of guide plates 40. Each row of guide plates 40 is located on the same straight line, and a gap is formed between two adjacent guide plates 40 in each row. Each guide plate 40 includes a main body 41 and a first guiding portion 42. The first guiding portion 42 extends from the main body 41. The first guiding portion 42 is inclined and located on the side of the guide plate 40 close to the stamping area. The two first guiding portions 42 of the two guide plates 40 are arranged oppositely. In the cross-section along the vertical direction, the first guiding portions 42 of the two guide plates 40 are in a V shape. When the stamping plate 12 stamps downward, the first guiding portion 42 guides the stamping plate 12 to fall, enabling the stamping plate 12 to accurately fall into the stamping area. The guide plate 40 at the outermost end of each row of guide plates 40 is further provided with a second guiding portion 43. The second guiding portion 43 extends from the main body 41 and is located at the corner of the main body 41. Along the conveying direction of the strip, the two second guiding portions 43 of the two guide plates 40 are in a V shape, guiding the strip to accurately move to the stamping area.

[0029] There are two baffles 50, and the two baffles 50 are respectively fixed to the ends of two rows of guide plates 40. Each baffle 50 includes a stop portion 51, a fixing portion 52 and an extension portion 53. The stop portion 51 and the extension portion 53 respectively extend from both ends of the fixing portion 52. The fixing portion 52 is horizontally arranged and fixed to the guide plate 40. The stop portion 51 is perpendicular to the fixing portion 52, and the top end of the stop portion 51 is higher than the stamping surface. The stop portion 51 is located on one side of the stamping surface to prevent foreign objects from entering the stamping area and improve the stamping accuracy. The extension portion 53 forms an obtuse angle with the fixing portion 52, and the extension portion 53 extends downward and is located at the end of the guide plate 40 to prevent foreign objects from entering the stamping area along the guide plate 40.

[0030] When the motor core progressive die is in use, the strip moves to the material supporting plate 30, and the strip enters the stamping area along the second guiding portion 43 of the two guide plates 40 at the end. The stamping plate 12 of the upper die 10 stamps the strip at high speed, and the stamping plate 12 enters the stamping area along the first guiding portion 42, so that the strip is stamped or blanked, and the waste enters the blanking hole 21. Compressed air from an external air source impacts the waste in the blanking hole 21 through the air passage 22 to prevent the waste from getting stuck in the blanking hole 21.

[0031] Through the above design, the strip located in the stamping area is positioned between the two rows of guide plates 40 during stamping; the baffle 50 blocks the sundries outside the stamping area to prevent the sundries from entering the stamping area and affecting the stamping accuracy.

[0032] The above embodiments only represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made. These are all equivalent modifications and evolutions made to the above embodiments based on the essence of the present utility model, and these all belong to the protection scope of the present utility model.

Claims

1. A progressive stamping die for a motor iron core, comprising an upper die and a lower die, wherein the upper die includes a stamping plate, and is characterized in that: The progressive die for stamping the motor iron core further includes a stock plate, a guide plate, and a baffle plate. The stock plate is fixed to the lower die, and the stock plate extends from the edge of the lower die. The number of the guide plates is multiple, and the multiple guide plates are respectively fixed on both sides of the stock plate. The multiple guide plates form two rows, and a stamping area is formed between the two rows of guide plates. The stamping plate is located above the stamping area. The number of the guide plates in each row is multiple, and a gap is formed between two adjacent guide plates in each row. The number of the baffle plates is two, and the two baffle plates are respectively fixed to the two guide plates. The baffle plates are located on one side of the stamping area, and the projection of the top end of the baffle plate in the vertical direction is located on the stamping plate.

2. The progressive die for stamping the motor iron core according to claim 1, characterized in that: The guide plate includes a main body and a first guiding portion extending from the main body. The first guiding portion is inclined, and the first guiding portion extends to the stock plate.

3. The progressive die for stamping the motor iron core according to claim 2, wherein: In a vertical cross-section, the first guiding portions of the two guide plates are V-shaped.

4. The progressive die for stamping the motor iron core according to claim 1, wherein: The guide plates at the ends of each row are further provided with second guiding portions. The second guiding portions are inclined, and along the feeding direction, the two second guiding portions are V-shaped.

5. The progressive die for stamping the motor iron core according to claim 1, wherein: The two rows of guide plates extend from the edge of the lower die and are located on the stock plate.

6. The progressive die for stamping the motor iron core according to claim 1, wherein: Each baffle plate includes a fixing portion and a stopping portion. The stopping portion extends from the fixing portion and is perpendicular to the fixing portion. The fixing portion is fixed to the guide plate, and the stopping portion extends in the vertical direction. The stopping portion is located at the edge of the stamping area.

7. The progressive die for stamping the motor iron core according to claim 6, characterized in that: Each baffle plate further includes an extending portion. The extending portion extends from one end of the fixing portion away from the stopping portion. The extending portion forms an obtuse angle with the fixing portion.

8. The progressive die for stamping the motor iron core according to claim 7, wherein: The extending portion is located at the end of the guide plate.

9. The progressive stamping die for motor iron core according to claim 1, wherein: The stock plate and the lower die are provided with blanking holes, and the blanking holes are located in the stamping area.

10. The progressive die for stamping the motor iron core according to claim 9, wherein: The lower die is further provided with an air duct. The air duct is connected to an external air source, and the air duct is communicated with the blanking holes. The waste in the blanking holes is washed away by the gas in the air duct.

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