A continuous punching die for a U-shaped magnetic pole piece

Abstract

The utility model relates to punch die technical field, and disclose a kind of U-shaped structure magnetic pole piece continuous punch die, including punch platform, punch platform is "U" block, the upside of punch platform is slid with two symmetrical distribution's first moving block.The utility model in this paper, the accurate displacement control of second moving block: first telescopic device drives second moving block to carry magnetic pole piece to slip, during laser sensor and laser transmitter constitute closed loop feedback: when magnetic pole piece is pushed between two first extrusion blocks, its displacement triggers laser transmitter signal, synchronously closes electromagnetic chuck to release workpiece, ensure positioning zero delay.Extrusion-punching-ejecting self-circulation: after punch head completes U-shaped bending, the magnetic pole piece of subsequent entry directly promotes the finished product of previous along guide block to slide out, realizes automatic ejection blanking using material itself movement, completely avoids the workpiece stagnation problem of traditional mould, significantly improves efficiency and stability.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a U-shaped structure magnetic pole sheet continuous stamping die. Background Technology

[0002] In the field of motor magnetic pole sheet stamping, the continuous and efficient forming of U-shaped magnetic pole sheets has always been a technical challenge. Traditional processes require manual step-by-step completion of feeding, positioning, stamping, and unloading, resulting in low efficiency and difficulty in ensuring accuracy. Especially for long strip-shaped magnetic pole sheets, the precise positioning before bending is easily affected by material deformation, leading to deviations in the symmetry of the U-shaped opening; and the bent workpiece is prone to getting stuck in the mold, requiring manual removal after stopping the machine, which seriously restricts the continuity of automation. Although existing molds attempt to optimize the process through mechanical grippers or pneumatic push rods, their structures are complex and it is difficult to balance flexible positioning and stable unloading. Therefore, we propose a U-shaped structure continuous stamping mold for magnetic pole sheets. Utility Model Content

[0003] The present invention aims to solve the technical problems existing in the prior art and provide a U-shaped magnetic pole sheet continuous stamping die.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a continuous stamping die for U-shaped magnetic pole pieces, including a stamping platform, which is a U-shaped block. Two symmetrically distributed first moving blocks slide on the upper side of the stamping platform. Each of the two first moving blocks has a mounting cavity on one corresponding side. A spring is fixedly installed inside the mounting cavity, and a first extrusion block is fixedly installed at one end of the spring. The first extrusion block is slidably installed on the side of the first moving block. The first extrusion block is a trapezoidal block. A laser emitter is fixedly installed above the first extrusion block. A guide block is fixedly installed on the upper side of the stamping platform. The guide block is a rectangular block with a rectangular cavity on its side. A mounting groove is opened in the rectangular cavity on the side of the guide block. A contact sensor is fixedly installed inside the mounting groove. A sliding groove is opened on the side of the guide block. A second moving block slides inside the sliding groove. An electromagnetic chuck is fixedly installed above the second moving block. A stamping head is provided above the stamping platform. Laser sensing plates are provided on both sides of the electromagnetic chuck.

[0005] Preferably, the two first extrusion blocks are mirror-distributed on both sides of the stamping platform, and the edges of the first extrusion blocks are provided with arc-shaped chamfers.

[0006] Preferably, a sliding cavity is provided on the upper side of the stamping platform corresponding to the position of the first moving block, and a sliding groove is provided on the side of the stamping platform corresponding to the position of the sliding cavity. A sliding rod is slidably installed inside the sliding cavity, and a guide rod is fixedly installed on the side of the sliding rod corresponding to the position of the sliding groove. The guide rod is slidably installed inside the sliding groove, and the upper side of the sliding rod is fixedly connected to the bottom side of the first moving block.

[0007] Preferably, the upper side of the guide rod is provided with a groove, which is a rectangular groove. A connecting rod is fixedly installed on the side of the stamping platform corresponding to the upper part of the guide rod. A threaded hole is provided on the upper side of the connecting rod corresponding to the position of the groove. A sliding rod laser emitter is threaded inside the threaded hole. The threaded post extends downward through the groove to the lower part of the guide rod. A second extrusion block is fixedly installed at the lower end of the threaded post.

[0008] Preferably, a pressing slide is fixedly installed on the side of the stamping platform corresponding to the position of the second moving block, and a fixed first telescopic device is provided on the upper side of the pressing slide, with the output end of the first telescopic device fixedly installed on the side of the second moving block.

[0009] Preferably, two limiting holes are provided on the side of the first movable block corresponding to the position of the first extrusion block, and limiting posts are fixedly installed on the side of the first extrusion block corresponding to the position of the limiting holes, with the limiting posts slidably installed inside the limiting holes.

[0010] Beneficial effects: This utility model provides a continuous stamping die for U-shaped magnetic pole pieces. It has the following beneficial effects: (1) The U-shaped magnetic pole sheet continuous stamping die has a contact sensor and an electromagnetic chuck linked together: When the magnetic pole sheet enters the rectangular cavity of the guide block and touches the contact sensor, the electromagnetic chuck is automatically activated to adsorb the workpiece, eliminating the error of manual feeding. The precise displacement control of the second moving block: The first telescopic device drives the second moving block to slide with the magnetic pole sheet. During this period, the laser sensing plate and the laser emitter form a closed-loop feedback: When the magnetic pole sheet is pushed between the two first extrusion blocks, its displacement triggers the laser emitter signal, and the electromagnetic chuck is closed simultaneously to release the workpiece, ensuring zero positioning delay. Extrusion-stamping-ejection self-circulation: After the stamping head completes the U-shaped bending, the subsequent magnetic pole sheet directly pushes the previous finished product to slide out along the guide block. The material's own movement is used to achieve automatic ejection and unloading, completely avoiding the workpiece retention problem of traditional molds, and significantly improving efficiency and stability.

[0011] (2) The U-shaped magnetic pole sheet continuous stamping die has a spring-preloaded trapezoidal extrusion block: two mirror-distributed first extrusion blocks provide adaptive clamping force through springs, and their trapezoidal inclined surfaces and arc-shaped chamfers guide the magnetic pole sheet to be centered and introduced, dispersing lateral stress at the moment of stamping and preventing workpiece warping; the sliding fit between the limiting post and the limiting hole ensures that the extrusion block only extends and retracts in the set direction, eliminating deflection. For magnetic pole sheets of different sizes, the sliding rod moves in the sliding groove through the guide rod, driving the first moving block and the first extrusion block to move as a whole, quickly changing the clamping distance; after adjustment, the rotating threaded post drives the second extrusion block to press the guide rod, and the rigid locking of the groove and the connecting rod eliminates the movement, ensuring forming accuracy and equipment compatibility. Attached Figure Description

[0012] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0013] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side sectional view of the stamping platform of this utility model; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.

[0015] Legend: 1. Stamping platform; 2. First moving block; 3. Mounting cavity; 4. Spring; 5. First extrusion block; 6. Guide block; 7. Second moving block; 8. Electromagnetic chuck; 9. Laser emitter; 10. Mounting groove; 11. Contact sensor; 12. Sliding cavity; 13. Sliding groove; 14. Sliding rod; 15. Guide rod; 16. Groove; 17. Connecting rod; 18. Threaded hole; 19. Threaded post; 20. Second extrusion block; 21. Slide groove; 22. Extrusion slider; 23. First telescopic device; 24. Limiting hole; 25. Limiting post. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Figure 1 - Figure 4As shown, a U-shaped magnetic pole sheet continuous stamping die includes a stamping platform 1, which is a U-shaped block. Two symmetrically distributed first moving blocks 2 slide on the upper side of the stamping platform 1. Each of the two first moving blocks 2 has a mounting cavity 3 on one corresponding side. A spring 4 is fixedly installed inside the mounting cavity 3. A first pressing block 5 is fixedly installed at one end of the spring 4. The first pressing block 5 is slidably installed on the side of the first moving block 2. The first pressing block 5 is a trapezoidal block. A laser emitter 9 is fixedly installed above the first pressing block 5. A guide block 6 is fixedly installed on the upper side of the stamping platform 1. The guide block 6 is a rectangular block with a rectangular cavity on its side. A mounting groove 10 is formed in the rectangular cavity on the side of the guide block 6. A contact sensor 11 is fixedly installed inside the slot 10. A sliding groove 21 is provided on the side of the guide block 6. A second moving block 7 is slidably installed inside the sliding groove 21. An electromagnetic chuck 8 is fixedly installed above the second moving block 7. A stamping head is provided above the stamping platform 1. Laser sensing plates are provided on both sides of the electromagnetic chuck 8. In use, the long strip-shaped magnetic pole piece moves in the rectangular cavity inside the guide block 6. After the magnetic pole piece squeezes the contact sensor 11, the electromagnetic chuck 8 is activated, and the electromagnetic chuck 8 attracts the magnetic pole piece. The second moving block 7 drives the electromagnetic chuck 8 and the magnetic pole piece to move. The magnetic pole piece squeezes the two first squeezing blocks 5, so that the two first squeezing blocks 5 constrain the magnetic pole piece. At this time, After the second moving block 7 contacts the laser sensing plate on the side of the electromagnetic chuck 8, the electromagnetic chuck 8 is closed. When the second moving block 7 moves again, the magnetic pole piece is constrained and squeezed by the two first pressing blocks 5. Then, the magnetic pole piece is pressed by the punch head, causing it to fold into a U-shape. When the second magnetic pole piece to be pressed moves again, it presses the previously pressed magnetic pole piece, completing the unloading action and realizing continuous automated processing. The two first pressing blocks 5 are mirror-distributed on both sides of the punching platform 1. The edges of the first pressing blocks 5 are provided with arc-shaped chamfers. During use, the side of the magnetic pole piece is pressed against the inclined surface of the first pressing block 5. The magnetic pole piece is pressed by the side of the first pressing block 5. A sliding cavity 12 is provided on the upper side of the platform 1 corresponding to the position of the first moving block 2. A sliding groove 13 is provided on the side of the stamping platform 1 corresponding to the position of the sliding cavity 12. A sliding rod 14 is slidably installed inside the sliding cavity 12. A guide rod 15 is fixedly installed on the side of the sliding rod 14 corresponding to the position of the sliding groove 13. The guide rod 15 is slidably installed inside the sliding groove 13. The upper side of the sliding rod 14 is fixedly connected to the bottom side of the first moving block 2. The guide rod 15 moves inside the sliding groove 13, and the guide rod 15 drives the sliding rod 14 to move. The sliding rod 14 drives the first moving block 2 to move. The first moving block 2 drives the first extrusion block 5 to move, thereby adjusting the clamping position of the first extrusion block 5. A groove 16 is provided on the upper side of the guide rod 15. The groove 16 is a rectangular groove. A connecting rod 17 is fixedly installed on the side of the stamping platform 1 above the guide rod 15. A threaded hole 18 is provided on the upper side of the connecting rod 17 at the position corresponding to the groove 16. A sliding rod 14 and a laser emitter 9 are threadedly connected inside the threaded hole 18. A threaded column 19 extends downward through the groove 16 to the bottom of the guide rod 15. A second extrusion block 20 is fixedly installed at the lower end of the threaded column 19. When the threaded column 19 is rotated, the threaded column 19 drives the second extrusion block 20 to extrude the bottom side of the guide rod 15 to constrain the movement of the guide rod 15 and tighten the guide rod 15. A pressing platform 1 has a pressing slide block 22 fixedly installed on its side corresponding to the position of the second moving block 7. A fixed first telescopic device 23 is provided on the upper side of the pressing slide block 22. The output end of the first telescopic device 23 is fixedly installed on the side of the second moving block 7. The first telescopic device 23 drives the second moving block 7 to move. The second moving block 7 drives the magnetic pole piece to move through the electromagnetic chuck 8. Two limiting holes 24 are opened on the side of the first moving block 2 corresponding to the position of the first pressing block 5. A limiting post 25 is fixedly installed on the side of the first pressing block 5 corresponding to the position of the limiting hole 24. The limiting post 25 is slidably installed inside the limiting hole 24. The first pressing block 5 is slidably installed on the side of the first moving block 2 through the limiting hole 24 and the limiting post 25.

[0018] The working principle of this utility model: In use, the elongated magnetic pole piece moves within the rectangular cavity of the guide block 6. After the magnetic pole piece presses against the contact sensor 11, the electromagnetic chuck 8 is activated, attracting the magnetic pole piece. The second moving block 7 drives the electromagnetic chuck 8 and the magnetic pole piece to move, pressing the magnetic pole piece against the two first pressing blocks 5, thus constraining the magnetic pole piece. At this point, the second moving block 7 contacts the laser sensing plate on the side of the electromagnetic chuck 8 and closes the electromagnetic chuck 8. When the second moving block 7 moves again, the magnetic pole piece is constrained and pressed by the two first pressing blocks 5. Then, the stamping head stamps the magnetic pole piece, folding it into a U-shape. When the second magnetic pole piece to be stamped moves again, it presses the previously stamped magnetic pole piece, completing the unloading process and achieving continuous automated processing. The side of the magnetic pole piece is pressed against the inclined surface of the first pressing block 5. The magnetic pole piece is pressed by the side of the first pressing block 5. The guide rod 15 moves inside the sliding groove 13. The guide rod 15 drives the sliding rod 14 to move. The sliding rod 14 drives the first moving block 2 to move. The first moving block 2 drives the first pressing block 5 to move, thereby adjusting the clamping position of the first pressing block 5. The threaded column 19 is rotated, and the threaded column 19 drives the second pressing block 20 to press against the bottom side of the guide rod 15 to constrain the movement of the guide rod 15 and tighten the guide rod 15. The first telescopic device 23 drives the second moving block 7 to move. The second moving block 7 drives the magnetic pole piece to move through the electromagnetic chuck 8. The first pressing block 5 is slidably mounted on the side of the first moving block 2 through the limiting hole 24 and the limiting post 25.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A continuous stamping die for U-shaped magnetic pole pieces, comprising a stamping platform (1), wherein the stamping platform (1) is a "U"-shaped block, characterized in that: The stamping platform (1) has two symmetrically distributed first moving blocks (2) sliding on its upper side. Each of the two first moving blocks (2) has a mounting cavity (3) on one side corresponding to the other. A spring (4) is fixedly installed inside the mounting cavity (3). A first extrusion block (5) is fixedly installed at one end of the spring (4). The first extrusion block (5) is slidably installed on the side of the first moving block (2). The first extrusion block (5) is a trapezoidal block. A laser emitter (9) is fixedly installed above the first extrusion block (5). The upper side of the stamping platform (1) is fixedly equipped with… The guide block (6) is a rectangular block with a rectangular cavity on its side. A mounting groove (10) is provided in the rectangular cavity on the side of the guide block (6). A contact sensor (11) is fixedly installed inside the mounting groove (10). A sliding groove (21) is provided on the side of the guide block (6). A second moving block (7) is slidably installed inside the sliding groove (21). An electromagnetic chuck (8) is fixedly installed above the second moving block (7). A stamping head is provided above the stamping platform (1). Laser sensing sheets are provided on both sides of the electromagnetic chuck (8).

2. The U-shaped magnetic pole sheet continuous stamping die according to claim 1, characterized in that: The two first extrusion blocks (5) are mirror-distributed on both sides of the stamping platform (1), and the edges of the first extrusion blocks (5) are provided with arc-shaped chamfers.

3. The U-shaped magnetic pole sheet continuous stamping die according to claim 1, characterized in that: A sliding cavity (12) is provided on the upper side of the stamping platform (1) corresponding to the position of the first moving block (2). A sliding groove (13) is provided on the side of the stamping platform (1) corresponding to the position of the sliding cavity (12). A sliding rod (14) is slidably installed inside the sliding cavity (12). A guide rod (15) is fixedly installed on the side of the sliding rod (14) corresponding to the position of the sliding groove (13). The guide rod (15) is slidably installed inside the sliding groove (13). The upper side of the sliding rod (14) is fixedly connected to the bottom side of the first moving block (2).

4. The U-shaped magnetic pole sheet continuous stamping die according to claim 3, characterized in that: The guide rod (15) has a groove (16) on its upper side. The groove (16) is a rectangular groove. A connecting rod (17) is fixedly installed on the side of the stamping platform (1) above the guide rod (15). A threaded hole (18) is opened on the upper side of the connecting rod (17) at the position corresponding to the groove (16). A sliding rod (14) and a laser emitter (9) are connected to the threaded hole (18). A threaded column (19) extends downward through the groove (16) to the lower part of the guide rod (15). A second extrusion block (20) is fixedly installed at the lower end of the threaded column (19).

5. The U-shaped magnetic pole sheet continuous stamping die according to claim 1, characterized in that: The side of the stamping platform (1) is fixedly installed with an extrusion slider (22) corresponding to the position of the second moving block (7). A fixed first telescopic device (23) is provided on the upper side of the extrusion slider (22), and the output end of the first telescopic device (23) is fixedly installed on the side of the second moving block (7).

6. The U-shaped magnetic pole sheet continuous stamping die according to claim 1, characterized in that: Two limiting holes (24) are opened on the side of the first moving block (2) corresponding to the position of the first extrusion block (5). A limiting post (25) is fixedly installed on the side of the first extrusion block (5) corresponding to the position of the limiting hole (24). The limiting post (25) is slidably installed inside the limiting hole (24).

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