Magnetic ring stamping die

Abstract

The utility model discloses a magnetic ring stamping die, relates to the technical field of dies, and solves the technical problem that the demolding effect is easily influenced due to insufficient resilience force when a magnetic ring is demolded by utilizing the counter-acting force of a compression spring. Comprising an upper die base and a lower die base, a plurality of evenly-distributed die cavities are formed in the top of the lower die base, ejector rings are arranged at the bottoms of the die cavities, a base is arranged below the lower die base, ejector rods are installed between the ejector rings and the base, grooves are symmetrically formed in the top, close to the two ends, of the base, and rotating rollers are rotatably installed in the grooves; a driving mechanism used for driving the rotating roller to rotate is installed in the base, a rotating plate is fixedly installed at the top of the rotating roller, notch grooves are symmetrically formed in the bottom, close to the two ends, of the lower die base, and the side wall of the top end of the rotating plate is attached to the groove walls of the notch grooves. According to the utility model, relative sliding between the lower die holder and the ejector rod is facilitated, so that ejection and demolding are realized, a traditional spring demolding mode is avoided, and the demolding effect is favorably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, in particular to a magnetic ring stamping mold. Background Art

[0002] The magnetic ring stamping die is a key tool used to manufacture magnetic rings. In the production process of magnetic rings, the stamping die plays a vital role, which can ensure the precise shape and high quality of the magnetic rings.

[0003] The Chinese patent authorization number CN218365419U discloses a mold for producing magnetic rings that is convenient and quick to demould. The upper mold is opened on the surface of the lower mold, so that the lower mold is exposed. Then, the elastic force of the ejection spring on the inner wall of the ejection hole exerts a certain force on the ejection plate. The ejection spring and the ejection plate form an elastic telescopic structure, and the ejection plate exerts a force on the product, thereby achieving the purpose of quick demoulding. However, this technical solution still has the following defects:

[0004] Although the reaction force of the ejector spring after compression can form an upward thrust on the stamped magnetic ring, the reaction force of the spring is limited. If the stamped magnetic ring is firmly stuck in the mold cavity, it is easy to be unable to demold. In addition, frequent compression of the ejector spring will also lead to a decrease in its rebound force, affecting the demolding effect. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a magnetic ring stamping die, which solves the problem that the demoulding effect of the magnetic ring is easily affected by insufficient rebound force when the reaction force of the compression spring is used to demould the magnetic ring.

[0006] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the utility model, a magnetic ring stamping mold is proposed, comprising an upper mold base and a lower mold base, the top of the lower mold base is provided with a plurality of evenly distributed mold cavities, the bottom of the mold cavity is provided with a ejection ring, and a base is provided below the lower mold base, a ejection rod is installed between the ejection ring and the base, the top of the base is symmetrically provided with grooves near both ends, a rotating roller is rotatably installed in the groove, a driving mechanism for driving the rotating roller to rotate is installed in the base, a rotating plate is fixedly installed on the top of the rotating roller, and the bottom of the lower mold base is symmetrically provided with notch grooves near both ends, the top side walls of the rotating plate are in contact with the groove walls of the notch grooves, and the top of the rotating plate is in contact with the groove bottom of the notch grooves, connecting rods are rotatably installed on both sides of the rotating plate near the top, a sliding pin is rotatably installed on the other end of the connecting rod, and a sliding groove for sliding the sliding pin is provided on the side wall of the lower mold base.

[0007] As a further technical solution of the utility model, guide columns are installed at the four corners of the top of the lower die base, and a cover plate is connected to the top of the upper die base. The cover plate is slidably connected to the guide columns, and a first spring connected between the lower die base and the cover plate is sleeved on the guide columns. A die handle is installed at the center of the top of the upper die base.

[0008] As a further technical solution of the utility model, the driving mechanism includes a gear coaxially installed on the roller shaft at the end of the roller, a rack rod meshing with the gear is slidably arranged at the bottom of the groove, and a double-axis cylinder driving the rack rod is installed in the base.

[0009] As a further technical solution of the utility model, a movable plate is connected to one end of the rack rod close to the double-axis cylinder, an inverted U-shaped groove for the movable plate to slide is installed in the base, the double-axis cylinder is located in the inverted U-shaped groove, and the piston rod of the double-axis cylinder is connected to the movable plate.

[0010] As a further technical solution of the utility model, a limiting frame is installed on the base, and the lower mold base is slidably connected to the limiting frame.

[0011] As a further technical solution of the utility model, a second spring is sleeved on the ejector rod, and the second spring is connected between the lower die seat and the base.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, the lower die seat is supported by a rotating plate, so that the position of the lower die seat will not change when the upper die seat moves downward for stamping, thereby facilitating the normal stamping of the magnetic ring. The driving mechanism is used to drive the two rollers to rotate synchronously in opposite directions, so that the rollers drive the rotating plate to deflect to a horizontal state. During the deflection process, the connecting rod is used to drive the sliding pin to slide adaptively along the sliding groove, thereby pulling the lower die seat to move downward close to the base, so that relative sliding occurs between the lower die seat and the ejecting rod, and the ejecting ring is used to automatically eject the magnetic ring in the mold cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of a magnetic ring stamping die of the utility model;

[0015] Figure 2 This is a structural schematic diagram of a magnetic ring stamping die of the utility model;

[0016] Figure 3 It is a three-dimensional diagram of a lower die seat in a magnetic ring stamping die of the utility model;

[0017] Figure 4 The utility model is a schematic structural diagram of the connecting part between the transfer roller and the rack rod in a magnetic ring stamping die.

[0018] In the figure: 1. upper die base; 2. lower die base; 3. die cavity; 4. ejector ring; 5. base; 6. ejector rod; 7. groove; 8. roller; 9. rotating plate; 10. notch groove; 11. connecting rod; 12. sliding pin; 13. slide groove; 14. guide column; 15. cover plate; 16. first spring; 17. die handle; 18. gear; 19. rack rod; 20. double-axis cylinder; 21. moving plate; 22. limit frame; 23. second spring. DETAILED DESCRIPTION

[0019] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-4 As shown, a magnetic ring stamping die comprises an upper die base 1 and a lower die base 2, guide columns 14 are installed at the four corners of the top of the lower die base 2, a cover plate 15 is connected to the top of the upper die base 1, the cover plate 15 is slidably connected to the guide column 14, and plays a sliding guide role, and a first spring 16 connected between the lower die base 2 and the cover plate 15 is sleeved on the guide column 14, a die handle 17 is installed at the center of the top of the upper die base 1, which is convenient for connection with the output end of an external press, so that the press can drive the upper die base 1 to realize lifting and stamping, and a plurality of evenly distributed die cavities 3 are opened on the top of the lower die base 2, which is convenient for adding raw materials for magnetic ring production, and cooperates with the upper die base 1 to stamp out the magnetic ring.

[0021] A ejection ring 4 is provided at the bottom of the die cavity 3, a base 5 is provided below the lower die seat 2, a ejection rod 6 is installed between the ejection ring 4 and the base 5, a second spring 23 is sleeved on the ejection rod 6, the second spring 23 is connected between the lower die seat 2 and the base 5, so as to facilitate the reset of the lower die seat 2 after being pressed down, grooves 7 are symmetrically provided at the top near both ends of the base 5, a rotating roller 8 is rotatably installed in the groove 7, a rotating plate 9 is fixedly installed on the top of the rotating roller 8, notch grooves 10 are symmetrically provided at the bottom near both ends of the lower die seat 2, the top side wall of the rotating plate 9 is in contact with the groove wall of the notch groove 10, and the top of the rotating plate 9 is in contact with the groove bottom of the notch groove 10, the rotating plate 9 supports the lower die seat 2 in a vertical state, so as to ensure the normal progress of the stamping work when the upper die seat 1 is stamped downward.

[0022] Connecting rods 11 are rotatably installed on both sides of the rotating plate 9 near the top, and a sliding pin 12 is rotatably installed on the other end of the connecting rod 11. A sliding groove 13 for the sliding pin 12 to slide is provided on the side wall of the lower mold base 2, so that the lower mold base 2 can be pulled downward when the rotating plate 9 is deflected by the rotating roller 8. The sliding pin 12 slides adaptively along the sliding groove 13. A limiting frame 22 is installed on the base 5, and the lower mold base 2 is slidably connected to the limiting frame 22. A driving mechanism for driving the rotating roller 8 to rotate is installed in the base 5, which is convenient for driving the two rotating rollers 8 to rotate synchronously in opposite directions.

[0023] The driving mechanism includes a gear 18 coaxially installed on the roller shaft at the end of the roller 8. A rack rod 19 meshing with the gear 18 is slidably arranged at the bottom of the groove 7, so that the rack rod 19 drives the gear 18 and the roller 8 to rotate when it moves. A double-axis cylinder 20 for driving the rack rod 19 is installed in the base 5. A movable plate 21 is connected to one end of the rack rod 19 close to the double-axis cylinder 20. An inverted U-shaped groove for the movable plate 21 to slide is installed in the base 5. The double-axis cylinder 20 is located in the inverted U-shaped groove, and the piston rod of the double-axis cylinder 20 is connected to the movable plate 21.

[0024] The working principle of the utility model is as follows: start the double-axis cylinder 20 to push the two movable plates 21 to drive the rack rod 19 to slide back to back, so that the roller 8 equipped with the gear 18 drives the rotating plate 9 to deflect to a vertical state, and the vertical plate 9 is used to support the lower die seat 2, and the magnetic ring production raw materials are added into the die cavity 3, and the cover plate 15 and the upper die seat 1 are driven downward by an external press to stamp the magnetic ring production raw materials in the die cavity 3. After the stamping is completed, the upper die seat 1 is controlled to rise and separate from the lower die seat 2. At the same time, the double-axis cylinder 20 is controlled to contract, so that the two movable plates 21 drive the rack rod 19 to move toward each other, so that the rotating roller 8 drives the rotating plate 9 to deflect to the groove 7 to form a horizontal state. During the deflection of the rotating plate 9, the connecting rod 11 is driven to make the sliding pin 12 slide adaptively along the slide groove 13, thereby pulling the lower die seat 2 to move downward close to the base 5, so that the lower die seat 2 and the ejecting rod 6 slide relative to each other, and the magnetic ring in the die cavity 3 can be automatically ejected in cooperation with the ejecting ring 4.

[0025] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A magnetic ring stamping die, comprising an upper die base (1) and a lower die base (2), characterized in that: The top of the lower die base (2) is provided with a plurality of evenly distributed die cavities (3), the bottom of the die cavity (3) is provided with a material ejection ring (4), a base (5) is provided below the lower die base (2), a material ejection rod (6) is installed between the material ejection ring (4) and the base (5), grooves (7) are symmetrically provided at the top near both ends of the base (5), a roller (8) is rotatably installed in the groove (7), a driving mechanism for driving the roller (8) to rotate is installed in the base (5), and the top of the roller (8) is provided with a driving mechanism for driving the roller (8) to rotate. A rotating plate (9) is fixedly installed on the lower die base (2), and notch grooves (10) are symmetrically opened at the bottom near both ends of the lower die base (2). The top side wall of the rotating plate (9) fits with the groove wall of the notch groove (10), and the top of the rotating plate (9) fits with the groove bottom of the notch groove (10). Connecting rods (11) are rotatably installed on both sides of the rotating plate (9) near the top, and a sliding pin (12) is rotatably installed at the other end of the connecting rod (11). A sliding groove (13) for the sliding pin (12) to slide is opened on the side wall of the lower die base (2).

2. A magnetic ring stamping die according to claim 1, characterized in that: Guide columns (14) are installed at the four corners of the top of the lower die base (2), and a cover plate (15) is connected to the top of the upper die base (1). The cover plate (15) is slidably connected to the guide columns (14), and a first spring (16) connected between the lower die base (2) and the cover plate (15) is sleeved on the guide columns (14). A die handle (17) is installed at the center of the top of the upper die base (1).

3. A magnetic ring stamping die according to claim 1, characterized in that: The driving mechanism comprises a gear (18) coaxially mounted on a roller shaft at the end of a rotating roller (8); a rack rod (19) meshing with the gear (18) is slidably arranged at the bottom of the groove (7); and a double-axis cylinder (20) for driving the rack rod (19) is installed in the base (5).

4. A magnetic ring stamping die according to claim 3, characterized in that: One end of the rack rod (19) close to the double-axis cylinder (20) is connected to a movable plate (21); an inverted U-shaped groove for the movable plate (21) to slide is installed in the base (5); the double-axis cylinder (20) is located in the inverted U-shaped groove, and the piston rod of the double-axis cylinder (20) is connected to the movable plate (21).

5. The magnetic ring stamping die according to claim 1, characterized in that: A limit frame (22) is installed on the base (5), and the lower mold base (2) is slidably connected to the limit frame (22).

6. The magnetic ring stamping die according to claim 1, characterized in that: The ejector rod (6) is sleeved with a second spring (23), and the second spring (23) is connected between the lower die seat (2) and the base (5).

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