Multi-station stamping progressive die for self-bonding iron core of axial flux motor

Abstract

The utility model relates to the technical field of iron core stamping, in particular to an axial magnetic flux motor self-bonding iron core multi-station stamping progressive die which comprises an upper die base, a movable groove is formed in the bottom of the upper die base, and a pulling plate is movably installed in the movable groove. A driving mechanism for driving the pulling plate to reciprocate is arranged on the side edge of the upper die base, and a plurality of groove-shaped male dies capable of moving up and down to generate height difference when the pulling plate reciprocates are further arranged at the bottom of the upper die base. According to the structure, multiple groove shapes can be arranged on multiple stations, so that the production and manufacturing of the axial flux motor self-bonded iron core with multiple groove shapes are realized.

Description

Technical Field

[0001] This utility model relates to the technical field of iron core stamping, and specifically to a multi-station progressive stamping die for a self-bonding iron core of an axial flux motor. Background Technology

[0002] For a disc motor, its working magnetic flux is axial. Therefore, during operation, eddy currents are generated in a plane perpendicular to the axial direction. To eliminate the adverse effects of eddy currents, appropriate measures need to be taken in this plane to suppress eddy current loops while minimizing impact on its electromagnetic performance. Currently, a relatively mature technology is to use a wound iron core as the stator. The iron core is typically formed by stamping using an axial flux motor stamping die.

[0003] However, current axial flux motor stamping dies only have a single slot structure. When stamping the iron core, the die only needs to be used with an axial winding press to stamp a single slot, and then with an automatic curing line, the production of the self-bonded iron core of the axial flux motor can be completed. Moreover, as the demand for different types of axial flux motors increases, there is also a need for various slot shapes for the self-bonded iron core. However, the current single-slot stamping die can only stamp one type of iron core. If other shapes of iron core need to be stamped, another die with other slot shapes needs to be replaced. Therefore, the processing efficiency is low, and multiple sets of dies are required, resulting in relatively high equipment costs. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-station progressive stamping die for self-bonding iron cores of axial flux motors, in order to solve the problem mentioned in the background art that existing stamping dies for axial flux motors have only a single groove shape. If it is necessary to stamp iron cores of other shapes, it is necessary to replace them with dies with other groove shapes, which leads to low processing efficiency and the need for multiple sets of dies, resulting in relatively high equipment costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-station progressive stamping die for a self-bonding core of an axial flux motor, comprising an upper die base, a movable groove at the bottom of the upper die base, a draw plate movably installed in the movable groove, a driving mechanism for driving the draw plate to reciprocate on the side of the upper die base, and several slotted punches at the bottom of the upper die base that can move up and down as the draw plate reciprocates, thereby generating a height difference.

[0006] Preferably, for ease of installation, an upper pad is fixed to the bottom of the upper mold base, and a pull-out plate is provided inside the upper pad. The upper part of the pull-out plate abuts against the lower surface of the pull plate. The lower surface of the pull plate is provided with a number of recesses at intervals. The upper surface of the pull-out plate is provided with a pushing part that cooperates with the recesses. The pushing parts on each pull-out plate are staggered. A punch fixing plate is provided below the upper pad, and the slotted punch is inserted into the punch fixing plate. The upper part of the slotted punch is connected to the lower part of the pull-out plate.

[0007] Preferably, for ease of disassembly, the punch fixing plate is threadedly connected to the upper pad plate by fixing screws.

[0008] Preferably, to ensure more stable up-and-down movement, the recess is trapezoidal in shape, and the pushing part is a trapezoidal protrusion.

[0009] Preferably, in order to limit the downward movement of the slotted punch, a limiting notch is provided on the side of the slotted punch, and a pressure plate with one end inserted into the limiting notch is fixed at the bottom of the punch fixing plate.

[0010] Preferably, for ease of disassembly, the pressure plate is fixed to the bottom of the punch fixing plate by pressure plate screws.

[0011] Preferably, the upper pad is provided with a plurality of limiting grooves, each of the pull plate pads is placed in a corresponding limiting groove, and the outer wall of the pull plate pad abuts against the inner wall of the limiting groove, and the upper part of the groove-shaped punch is placed in the limiting groove.

[0012] Preferably, in order to guide the slotted punch and to flatten the strip during stamping, the bottom of the upper die holder is also fixed with a stripper plate located below the pressure plate. The stripper plate is provided with a guide through hole, and the lower end of the slotted punch is movably inserted into the guide through hole. When the die is closed, the lower surface of the stripper plate is pressed against the surface of the strip.

[0013] Preferably, in order to restrict the movement of the drawer plate, the drawer plate is provided with a clearance groove, and a limit screw is inserted into the clearance groove. The limit screw is used to restrict the movement of the drawer plate, and the limit screw is locked with the upper mold base after passing through the clearance groove.

[0014] Preferably, the driving mechanism is a cylinder, which is provided with an air pipe connected to the punch press, and the piston rod of the cylinder is fixedly connected to the drawing plate by a drawing plate screw.

[0015] Compared with the prior art, the beneficial effects of this utility model are: this structure realizes the layout of multiple slot-shaped workstations on a mold, thereby realizing the production and manufacturing of self-bonded iron cores of axial flux motors with multiple slot shapes, further reducing equipment costs and improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of a multi-station progressive stamping die for a self-bonding iron core of an axial flux motor disclosed in Example 1;

[0017] Figure 2 for Figure 1 Enlarged view of point A;

[0018] Figure 3 for Figure 1 Enlarged view of point B.

[0019] In the diagram: 1. Cylinder; 2. Pull plate screw; 3. Pull plate; 301. Recess; 302. Clearance groove; 4. Limiting screw; 5. Upper pad; 501. Limiting groove; 6. Pull plate pad; 601. Pushing part; 7. Slotted punch; 701. Limiting notch; 8. Upper die base; 801. Movable groove; 9. Punch fixing plate; 901. Fixing screw; 10. Punch pressure plate; 11. Pressure plate screw; 12. Ejector plate; 121. Guide through hole; 13. Air pipe. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model. Example

[0021] Please see Figure 1-3 This embodiment discloses a multi-station progressive stamping die for a self-bonding core of an axial flux motor, including an upper die base 8. The bottom of the upper die base 8 has a movable groove 801, in which a draw plate 3 is movably installed. The side of the upper die base 8 is provided with a driving mechanism that drives the draw plate 3 to reciprocate. The bottom of the upper die base 8 is also provided with several slotted punches 7 that can move up and down as the draw plate 3 reciprocates, thereby generating a height difference. In this embodiment, there are two slotted punches 7. In actual practice, three, four or more can be set according to requirements.

[0022] Preferably, for ease of installation, an upper pad 5 is fixed to the bottom of the upper mold base 8. A pull plate pad 6 is provided inside the upper pad 5. The upper part of the pull plate pad 6 abuts against the lower surface of the pull plate 3. The lower surface of the pull plate 3 is provided with a plurality of recesses 301 at intervals. The upper surface of the pull plate pad 6 is provided with a pushing part 601 that cooperates with the recesses 301. The pushing parts 601 on each pull plate pad 6 are staggered. A punch fixing plate 9 is provided below the upper pad 5. The grooved punch 7 is inserted into the punch fixing plate 9, and the upper part of the grooved punch 7 is connected to the lower part of the pull plate pad 6. For ease of disassembly, the punch fixing plate 9 is threadedly connected to the upper pad 5 by fixing screws 901.

[0023] As a preferred option, to ensure more stable up-and-down pushing, the recess 301 is trapezoidal in shape and the pushing part 601 is trapezoidal protrusion. In this structure, the recess 301 is trapezoidal and the pushing part 601 is also trapezoidal, so that when the pushing part 601 is inserted into the trapezoidal recess 301, the contact area is larger, thus the positioning is more stable and the up-and-down pushing is also more stable.

[0024] Preferably, in order to limit the downward movement of the slotted punch 7, a limiting notch 701 is provided on the side of the slotted punch 7, and a pressure plate 10 with one end inserted into the limiting notch 701 is fixed at the bottom of the punch fixing plate 9. In order to facilitate disassembly, the pressure plate 10 is fixed to the bottom of the punch fixing plate 9 by a pressure plate screw 11. In the above structure, by providing a limiting notch 701 on the side of the slotted punch 7, and inserting one side of the pressure plate 10 into the side of the limiting notch 701, the corresponding slotted punch 7 moves up and down with the push of the upper pull plate pad 6, and the pressure plate 10 limits the downward movement of the slotted punch 7.

[0025] Preferably, the upper pad 5 is provided with a plurality of limiting grooves 501, each pull plate pad 6 is placed in a corresponding limiting groove 501, and the outer wall of the pull plate pad 6 abuts against the inner wall of the limiting groove 501. The upper part of the groove-shaped punch 7 is placed in the limiting groove 501. The number of limiting grooves 501 is the same as the number of pull plate pads 6, which is only to limit the left and right movement of the groove-shaped punch 7, ensuring that the groove-shaped punch 7 can only move up and down within the limiting groove 501, and cannot move left and right.

[0026] Preferably, in order to guide the slotted punch 7 and to flatten the strip during stamping, the bottom of the upper die holder 8 is also fixed with a stripper plate 12 located below the pressure plate 10. The stripper plate 12 is provided with a guide through hole 121. The lower end of the slotted punch 7 is movably inserted into the guide through hole 121. When the die is closed, the lower surface of the stripper plate 12 is pressed against the surface of the strip. By adding the stripper plate 12, two functions are achieved: first, to guide the slotted punch 7; and second, to flatten the strip during stamping.

[0027] Preferably, in order to restrict the movement of the drawer plate 3, the drawer plate 3 is provided with a clearance groove 302, and a limiting screw 4 is inserted into the clearance groove 302. The limiting screw 4 is used to restrict the movement of the drawer plate 3, and the limiting screw 4 is locked with the upper mold base 8 after passing through the clearance groove 301.

[0028] Preferably, the driving mechanism is a cylinder 1, which is equipped with an air pipe 13 connected to the punch press. The piston rod of the cylinder 1 is fixedly connected to the drawing plate 3 by a drawing plate screw 2. Using a cylinder to drive the mechanism makes the whole structure simpler and the operation more stable.

[0029] It should be noted that, in order to allow for the creation of more grooves of varying depths on the same upper mold base 8,

[0030] Multiple movable slots 801 can be opened at the bottom of the upper mold base 8. A pull plate 3 is set in each movable slot 801, and the number of cylinders 1 is fixed on the side of the upper mold base 8 in the same number as the movable slots 801. Each cylinder 1 drives a pull plate 3, and multiple slotted punches 7 are set below each pull plate 3. In this way, multiple sets of such punch pushing mechanisms are set on a mold base 8, which ultimately results in more slots of different depths.

[0031] The specific working principle of this structure is as follows: Since this structure has a slotted bottom of the upper mold base 8 forming a movable groove 801, a draw plate 3 is installed inside the movable groove 801. Then, draw plate pads 6, the same number as the slotted punches 7, are installed inside the upper pad 5 below the draw plate 3. Each draw plate pad 6 has one slotted punch 7 installed at its bottom. During operation, a cylinder 1 is connected to a punch press via an air pipe 13. Finally, the opening / closing state of the air output from the punch press controls the extension and retraction of the head of the cylinder 1, driving the draw plate 3 to reciprocate. During the reciprocating motion of the draw plate 3, limit screws 4 provide limit control. This causes the closing and protrusion between the draw plate pad 6 and the draw plate 3, ultimately controlling the height difference between multiple slotted punches 7, resulting in slots of different depths below. This allows the mold to achieve multi-station punching, producing different types of slots during the stamping process. Then, in conjunction with the axial winding punch and automatic curing line, the production of the self-bonded iron core of the axial flux motor is completed. Therefore, this structure enables the layout of multiple slotted stations on a single mold, thereby achieving the production of self-bonded iron cores of axial flux motors with various slot shapes, further reducing equipment costs and improving work efficiency.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-station progressive stamping die for a self-bonding iron core of an axial flux motor, comprising an upper die base (8), characterized in that: The upper mold base (8) has a movable groove (801) at its bottom. A pull plate (3) is movably installed in the movable groove (801). The upper mold base (8) has a drive mechanism on its side that drives the pull plate (3) to reciprocate. The upper mold base (8) also has several slotted punches (7) at its bottom that can move up and down as the pull plate (3) reciprocates, thereby generating a height difference.

2. The multi-station progressive stamping die for a self-bonding core of an axial flux motor according to claim 1, characterized in that: The upper mold base (8) is fixed with an upper pad plate (5) at the bottom. A pull plate pad (6) is provided inside the upper pad plate (5). The upper part of the pull plate pad (6) abuts against the lower surface of the pull plate (3). The lower surface of the pull plate (3) is provided with a number of recesses (301) at intervals. The upper surface of the pull plate pad (6) is provided with a pushing part (601) that cooperates with the recesses (301). The pushing parts (601) on each pull plate pad (6) are staggered. A punch fixing plate (9) is provided below the upper pad plate (5). The slotted punch (7) is inserted into the punch fixing plate (9), and the upper part of the slotted punch (7) is connected to the lower part of the pull plate pad (6).

3. The multi-station progressive stamping die for a self-bonding core of an axial flux motor according to claim 2, characterized in that: The punch fixing plate (9) is threadedly connected to the upper pad plate (5) by fixing screws (901).

4. The multi-station progressive stamping die for a self-bonding core of an axial flux motor according to claim 2 or 3, characterized in that: The recess (301) has a trapezoidal structure, and the pushing part (601) is a trapezoidal boss.

5. The multi-station progressive stamping die for a self-bonding core of an axial flux motor according to claim 2 or 3, characterized in that: The grooved punch (7) has a limiting notch (701) on its side, and a pressure plate (10) with one end inserted into the limiting notch (701) is fixed at the bottom of the punch fixing plate (9).

6. The multi-station progressive stamping die for a self-bonding core of an axial flux motor according to claim 5, characterized in that: The pressure plate (10) is fixed to the bottom of the punch fixing plate (9) by pressure plate screws (11).

7. The multi-station progressive stamping die for a self-bonding core of an axial flux motor according to claim 2 or 3, characterized in that: The upper pad (5) is provided with several limiting grooves (501), each pull plate pad (6) is placed in a corresponding limiting groove (501), and the outer wall of the pull plate pad (6) abuts against the inner wall of the limiting groove (501), and the upper part of the groove-shaped punch (7) is placed in the limiting groove (501).

8. The multi-station progressive stamping die for a self-bonding core of an axial flux motor according to claim 6, characterized in that: The bottom of the upper mold base (8) is also fixed with a stripper plate (12) located below the pressure plate (10). The stripper plate (12) is provided with a guide through hole (121). The lower end of the groove punch (7) is movably inserted into the guide through hole (121). When the mold is closed, the lower surface of the stripper plate (12) is pressed against the surface of the strip.

9. The multi-station progressive stamping die for a self-bonding core of an axial flux motor according to claim 1, characterized in that: The draw plate (3) is provided with a clearance groove (302), and a limiting screw (4) is inserted into the clearance groove (302). The limiting screw (4) is used to limit the movement position of the draw plate (3). After the limiting screw (4) passes through the clearance groove (302), it is locked with the upper mold base (8).

10. The multi-station progressive stamping die for a self-bonding core of an axial flux motor according to claim 1, 2, or 3, characterized in that: The driving mechanism is a cylinder (1), and the cylinder (1) is provided with an air pipe (13) connected to the punch press. The piston rod of the cylinder (1) is fixedly connected to the drawing plate (3) by a drawing plate screw (2).

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