Inner hole forming stamping die

Abstract

The utility model relates to the technical field of stamping forming, in particular to an inner hole forming stamping die. The utility model provides an inner hole forming stamping die. The inner hole forming stamping die comprises a bottom plate. A sliding groove is formed in the middle of the top surface of the bottom plate; the sliding block is connected in the sliding groove of the bottom plate in a sliding mode, and the mold core is installed in the middle of the sliding block. A circular through hole is formed in the middle of the mold core; a detachable structure is arranged between the mold core and the sliding block; the punch is positioned above the die core; the punching handle is arranged at the upper end of the punching head; the punch is fixedly connected with the middle part of the punch handle through a set screw; the punch and the punch handle are of a detachable structure. The punching head and the punching handle are of detachable structural design, punching heads of different hole patterns can be replaced conveniently, the die core and the sliding block are also designed to be detachably connected, and die cores of different types can be replaced conveniently so as to meet different materials or punching requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping forming, in particular to an inner hole forming stamping die. Background Art

[0002] An inner hole forming stamping die is a tool specifically used to form inner hole features on metal plates or pipes. This die is usually installed on a press, and uses the punching force to plastically deform the material to process parts with specific inner hole shapes and sizes. Inner hole forming can include simple circular holes, or complex shaped holes, threaded holes or other special shaped holes.

[0003] In the design of existing inner hole forming stamping dies, a customized strategy is generally adopted, which means that each die is tailored for a specific product. Therefore, when it is necessary to stamp different hole types on the material, the existing die cannot be directly applied, but needs to be transferred to another stamping machine equipped with the corresponding die for operation. This design method not only limits the flexible replacement of the die, but also increases the difficulty of stamping different hole types.

[0004] Therefore, it is necessary to design an inner hole forming stamping die. Summary of the Utility Model

[0005] In order to overcome the disadvantages that the die is not convenient to replace and not convenient for stamping operations of different hole types, the utility model provides an inner hole forming stamping die.

[0006] An inner hole forming stamping die includes a bottom plate; a slider, a chute is opened in the middle of the top surface of the bottom plate; the slider is slidably connected in the chute of the bottom plate, and further includes a die core, the die core is installed in the middle of the slider; a circular through hole is opened in the middle of the die core; the die core and the slider are of a detachable structure; a punch, the punch is located above the die core; a punch handle, the punch handle is arranged at the upper end of the punch; the punch and the middle part of the punch handle are fixedly connected by a set screw; the punch and the punch handle are of a detachable structure.

[0007] More preferably, it further includes guide columns, the guide columns are symmetrically arranged on the top of the bottom plate in a left-right symmetry; a stripper plate, the stripper plate is slidably connected between the upper ends of the two guide columns.

[0008] More preferably, it further includes linear bearings, the linear bearings are symmetrically installed on the top of the stripper plate in a left-right symmetry; the extending ends of the linear bearings all penetrate through the bottom of the stripper plate and are connected to the upper ends of the adjacent guide columns; springs, the springs are all sleeved on the outer sides of the adjacent guide columns, and both ends of the springs are arranged between the adjacent linear bearings and the top of the bottom plate.

[0009] More preferably, it further includes a demolding sheet, a placement groove is provided in the middle of the demolding plate, and the demolding sheet is placed in the placement groove of the demolding plate; a long screw, and the lower end of the long screw is used to fix between the demolding sheet and the demolding plate.

[0010] More preferably, it further includes a heightening block, and the heightening block is arranged at the bottom of the bottom plate.

[0011] More preferably, it further includes a rear baffle arranged at the rear side of the bottom plate; a front baffle arranged at the front side of the bottom plate.

[0012] More preferably, it further includes a magnetic base, magnetic bases are arranged on the closer sides of the rear baffle and the front baffle; a magnetic ring, a magnetic ring is arranged inside the magnetic base, the outer shell of the slider is made of ferromagnetic material, and the slider is magnetically connected to the magnetic ring.

[0013] More preferably, it further includes a retaining ring sleeved on the upper end of the adjacent linear bearing.

[0014] More preferably, it further includes a handle arranged at the front side of the slider.

[0015] More preferably, a through hole adapted to the lower half of the punching handle and the punch head is provided in the middle of the demolding plate.

[0016] The beneficial effects and remarkable progress of the present utility model are as follows:

[0017] The punch head and the punching handle of the present utility model are designed with a detachable structure, which is convenient for replacing punch heads with different hole types. The die core and the slider are also designed to be detachably connected, which is convenient for replacing different types of die cores to adapt to different materials or stamping requirements. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of components such as the guide post, demolding plate and linear bearing of the present utility model.

[0020] Figure 3 It is a three-dimensional structural schematic diagram of components such as the magnetic base and magnetic ring of the present utility model.

[0021] The marks of each component in the drawings are as follows: 1. heightening block, 2. bottom plate, 3. rear baffle, 4. front baffle, 5. slider, 6. die core, 7. handle, 8. punching handle, 9. punch head, 10. set screw, 11. guide post, 12. demolding plate, 13. retaining ring, 14. linear bearing, 15. spring, 16. demolding sheet, 17. long screw, 18. magnetic base, 19. magnetic ring. Detailed Embodiment

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment: An inner hole forming stamping die, refer to Figures 1 to 3 , including a heightening block 1, a bottom plate 2, a rear baffle 3, a front baffle 4, a slider 5, a die core 6, a handle 7, a punch handle 8, a punch head 9, a set screw 10, a guide post 11, a stripper plate 12, a retaining ring 13, a linear bearing 14, a spring 15, a demoulding piece 16, a long screw 17, a magnetic base 18 and a magnetic ring 19. The bottom plate 2 serves as the basic carrier of the components. On the bottom of the bottom plate 2, heightening blocks 1 are symmetrically fixed and connected by bolts on the left and right. The heightening blocks 1 can increase the height of the base of the inner hole forming stamping die. The middle of the rear side of the bottom plate 2 is connected with a rear baffle 3, and the middle of the front side of the bottom plate 2 is connected with a front baffle 4. A chute is opened in the middle of the top surface of the bottom plate 2, and a slider 5 is slidably connected in the chute of the bottom plate 2. A die core 6 is installed in the middle of the slider 5. A circular through hole is opened in the middle of the die core 6. The die core 6 and the slider 5 are detachable structures, which is convenient for punching different types of materials. A handle 7 is connected to the front side of the slider 5. Guide posts 11 are symmetrically connected to the left and right at the rear side of the top of the bottom plate 2. A stripper plate 12 is slidably connected between the upper ends of the two guide posts 11. Linear bearings 14 are installed on the left and right sides of the top of the stripper plate 12. Retaining rings 13 are sleeved on the upper ends of the linear bearings 14. The extending ends of the linear bearings 14 penetrate through the bottom of the stripper plate 12 and are connected to the upper ends of the adjacent guide posts 11. Springs 15 are sleeved on the outer sides of the guide posts 11. Both ends of the springs 15 are connected between the adjacent linear bearings 14 and the top of the bottom plate 2. A punch head 9 is arranged above the stripper plate 12. The upper end of the punch head 9 is connected with a punch handle 8. The punch handle 8 is used to connect the pressing end of the stamping machine. A through hole adapted to the lower half of the punch handle 8 and the punch head 9 is opened in the middle of the stripper plate 12. The middle of the punch head 9 and the punch handle 8 are connected and fixed by a set screw 10. The punch head 9 and the punch handle 8 are detachable structures, which is convenient for replacing punch heads 9 of different models. A placement groove is opened in the middle of the stripper plate 12. A demoulding piece 16 is fixedly connected in the placement groove of the stripper plate 12 by a long screw 17. The lower end of the long screw 17 has threads for fixing the stripper plate 12. The other end of the long screw 12 can be knurled on the outer circle of the cylinder for easy hand screwing. The placement groove is suitable for placing the demoulding piece 16. Magnetic bases 18 are connected to the adjacent sides of the rear baffle 3 and the front baffle 4. A magnetic ring 19 is arranged inside the magnetic base 18. The outer shell of the slider 5 is made of ferromagnetic material, and the slider 5 is magnetically connected to the magnetic ring 19. When the slider 5 approaches the magnetic ring 19, the magnetic ring 19 will adsorb the slider 5 under the action of magnetism to achieve the purpose of fixation.

[0024] When the material needs to be stamped, place this inner hole forming stamping die under the stamping machine, and install the punch handle 8 at the lower pressing end of the stamping machine. Since the slider 5 adopts a drawer-type material loading and unloading design, when loading the material, pull the handle 7 forward, so that the die core 6 drives the slider 5 to move forward along the chute on the bottom plate 2. When the slider 5 moves forward to contact the magnetic ring 19, the slider 5 and the magnetic ring 19 will be adsorbed together under the action of magnetism, thus playing a fixing role on the slider 5 and the die core 6, facilitating the placement of the material. After placing the material, push the handle 7 backward, so that the slider 5 drives the die core 6 and the material to move backward until they contact the magnetic ring 19 of the rear baffle 3. At this time, the slider 5 and the magnetic ring 19 will be adsorbed and fixed under the action of magnetism to ensure that the material is located below the punch 9. Then, the staff starts the stamping machine, and its lower pressing end drives the punch handle 8 and the punch 9 to move downward. A through hole adapted to the punch 9 and the punch handle 8 is provided in the middle of the stripper plate 12. When the punch 9 moves downward, it will pass through this through hole. When the punch handle 8 contacts the upper end of the through hole, it will push the stripper plate 12 and the linear bearing 14 to move downward along the guide post 11, and the spring 15 is compressed accordingly. The punch 9 then punches the material in the die core 6. After punching, the lower pressing end of the stamping machine drives the punch 9 and the punch handle 8 to move upward. When the punch handle 8 moves upward and disengages from the through hole of the stripper plate 12, the stripper plate 12 and the linear bearing 14 will move upward along the guide post 11 under the reset action of the spring 15. Since the demoulding piece 16 is located between the stripper plate 12 and the material, when the stripper plate 12 rises, it will lift the stamped material, realizing automatic unloading. This inner hole forming stamping die is designed with a detachable structure between the punch 9 and the punch handle 8, which is convenient for replacing the punch 9 with different hole types. The die core 6 and the slider 5 are also designed to be detachably connected, which is convenient for replacing different types of die cores 6 to adapt to different materials or stamping requirements.

[0025] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all modifications and equivalent structures and functions.

Claims

1. An inner hole forming stamping die, comprising: A bottom plate (2); A slider (5), a chute is provided in the middle of the top surface of the bottom plate (2); The slider (5) is slidably connected in the chute of the bottom plate (2); It is characterized in that it further comprises: A die core (6), the die core (6) is installed in the middle of the slider (5); a circular through hole is provided in the middle of the die core (6); the die core (6) and the slider (5) are of a detachable structure; A punch (9), the punch (9) is located above the die core (6); A punch handle (8), the punch handle (8) is provided at the upper end of the punch (9); the punch (9) and the middle part of the punch handle (8) are connected and fixed by a set screw (10); the punch (9) and the punch handle (8) are of a detachable structure.

2. The internal hole forming stamping die according to claim 1, characterized in that it further Including: Guide pillars (11), the guide pillars (11) are symmetrically arranged on the top of the bottom plate (2) in a left-right symmetrical manner; A stripper plate (12), the stripper plate (12) is slidably connected between the upper ends of the two guide pillars (11).

3. The internal hole forming stamping die according to claim 2, characterized in that it further Including: Linear bearings (14), the linear bearings (14) are symmetrically installed on the top of the stripper plate (12) in a left-right symmetrical manner; the extending ends of the linear bearings (14) all penetrate through the bottom of the stripper plate (12) and are connected to the upper ends of the adjacent guide pillars (11); Springs (15), the springs (15) are sleeved on the outer sides of the adjacent guide pillars (11), and both ends of the springs (15) are arranged between the adjacent linear bearings (14) and the top of the bottom plate (2).

4. A kind of inner hole forming stamping die according to claim 3, characterized in that, further Including: A demoulding sheet (16), a placement groove is provided in the middle of the stripper plate (12), and the demoulding sheet (16) is placed in the placement groove of the stripper plate (12); Long screws (17), the demoulding sheet (16) and the stripper plate (12) are fixed by the lower ends of the long screws (17).

5. A kind of inner hole forming stamping die according to claim 4, characterized in that, further Including: A heightening block (1), the heightening block (1) is arranged at the bottom of the bottom plate (2).

6. A kind of inner hole forming stamping die according to claim 5, characterized in that, further Including: A rear baffle (3), the rear baffle (3) is arranged at the rear side of the bottom plate (2); A front baffle (4), the front baffle (4) is arranged at the front side of the bottom plate (2).

7. A kind of inner hole forming stamping die according to claim 6, characterized in that, further Including: Magnetic seats (18), magnetic seats (18) are provided on the adjacent sides of the rear baffle (3) and the front baffle (4); Magnetic rings (19), magnetic rings (19) are arranged inside the magnetic seats (18), the outer shell of the slider (5) is made of ferromagnetic material, and the slider (5) is magnetically connected to the magnetic rings (19).

8. A kind of inner hole forming stamping die according to claim 7, characterized in that, further Including: Retaining rings (13), the retaining rings (13) are sleeved on the upper ends of the adjacent linear bearings (14).

9. A kind of inner hole forming stamping die according to claim 8, characterized in that, further Including: A handle (7), the handle (7) is arranged on the front side of the slider (5).

10. According to an inner hole forming stamping die as claimed in claim 2, it is characterized in that A through opening adapted to the lower half of the punch handle (8) and the punch (9) is provided in the middle of the stripper plate (12).

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