Blanking die

Abstract

The utility model discloses a blanking die, which relates to the field of material processing equipment and comprises a first die set, a second die set and a driving assembly. The first die set is matched with the first die set to clamp materials, the second die set comprises a cutting piece, and a spiral cutting edge belt is arranged on the side, facing the first die set, of the cutting piece. The driving assembly is connected with the second die set and used for driving the second die set to move towards the first die set in the die closing direction to conduct die closing so that the cutting edge belt can punch the materials. According to the blanking die, the bad conditions of edge breakage, notches, wire drawing and the like can be improved in the cutting process.

Description

Technical Field

[0001] This application relates to the field of material processing equipment, and particularly to a blanking die. Background Art

[0002] In the prior art, a stamping machine or a hydraulic press is usually used to continuously drive the male and female dies to close the mold to achieve the low-speed blanking of metal materials.

[0003] However, when facing carbon fiber materials with high strength and flexibility, the existing blanking methods are extremely prone to defects such as burrs, notches, and wire drawing during the blanking process. Summary of the Utility Model

[0004] In view of the above, it is necessary to propose a blanking die to improve the defects such as burrs, notches, and wire drawing that occur during the blanking of materials.

[0005] An embodiment of this application provides a blanking die, which includes a first module, a second module, and a driving component. The second module is adapted to be combined with the first module to clamp the material. The second module includes a cutting piece, and a spiral cutting edge band is provided on one side of the cutting piece facing the first module. The driving component is connected to the second module, and the driving component is used to drive the second module to move towards the first module along the mold closing direction to close the mold, so that the cutting edge band cuts the material.

[0006] The blanking die provided by this application is designed with a spiral cutting edge band on the cutting piece. When the driving component drives the second module to close the mold with the first module, the cutting edge band contacts the material progressively. In the whole process of mold closing and blanking, the material is not instantaneously subjected to all the blanking forces, but the shearing force is applied to the material gradually and progressively. Finally, the material is cut. Due to the dispersion of the shearing force acting on the material, it is beneficial to reduce the strong action on the material during the instantaneous cutting process, and can make the edge of the cut material smoother and neater, reducing the occurrence of defects such as burrs, notches, and wire drawing.

[0007] In some embodiments, the cutting edge band includes a head end and a tail end that are connected end to end, and the head end and the tail end are offset by 1-4 mm along the mold closing direction.

[0008] In some embodiments, the cutting edge band includes a cutting edge surface facing the first module, and a plurality of cutting teeth are recessed in the cutting edge surface, and the distance between every two adjacent cutting teeth is 1-2 mm.

[0009] In some embodiments, the depth of the cutting teeth is 0 to 0.2 mm, and the cutting teeth have a first side surface and a second side surface opposite to the first side surface, the angle between the first side surface and the cutting edge surface is 60 to 90 degrees, and the angle between the second side surface and the cutting edge surface is 60 to 90 degrees.

[0010] In some embodiments, the second module further includes a second substrate and a concave mold. The concave mold is provided on a side of the second substrate facing the first module. The concave mold is provided with an opening, and the cutting piece is provided around the periphery of the opening.

[0011] In some embodiments, the second module further includes a pressing block and an elastic member, the pressing block is movably disposed in the opening, the elastic member is supported between the bottom of the opening and the pressing block, and the pressing block is used to support one side of the material.

[0012] In some embodiments, the first mold assembly includes a first substrate and a convex mold. The convex mold is disposed on one side of the first substrate and corresponds to the concave mold. The convex mold is used to support the other side of the material.

[0013] In some embodiments, the first module further includes a guide column and a limit block, one end of the guide column is connected to the side of the first substrate facing the second module, the second module is provided with a guide hole corresponding to the guide column, the guide column is used to be movably inserted into the guide hole, one end of the limit block is connected to the side of the first substrate facing the second module, and the limit block is located between the punch and the guide column.

[0014] In some embodiments, the driving component includes a conductive plate and a conductive coil, the conductive plate is connected to the second substrate, the conductive coil is used to pass a changing current to generate a changing magnetic field, and the conductive plate is used to sense the changing magnetic field and form a repulsive force with the conductive coil, thereby driving the second module to move toward the first module.

[0015] In some embodiments, the punching die further includes a first insulating plate and a second insulating plate, the first insulating plate is arranged corresponding to the conductive plate, the conductive coil is embedded in the first insulating plate, and the second insulating plate is connected between the conductive plate and the second substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a punching die and material before mold closing provided in one embodiment of the present application.

[0017] Figure 2 yes Figure 1 Side view of the blanking die shown.

[0018] Figure 3 Yes Figure 1 is the exploded view of the blanking die shown in the figure.<

[0019] Figure 4 Yes Figure 1 is the schematic diagram of the concave die and the cutting part of the blanking die shown in the figure.<

[0020] Figure 5 Yes Figure 4 is the enlarged view of area V of the cutting part shown in the figure.<

[0021] Figure 6 Yes Figure 4 is the enlarged view of area VI of the cutting part shown in the figure.<

[0022] Figure 7 Is Figure 1 the force analysis diagram of the blanking die during the die closing process shown in the figure.<

[0023] Description of main component symbols

[0024] Blanking die 100

[0025] First module 10

[0026] First substrate 11

[0027] Punch 12

[0028] Base 121

[0029] Protrusion 122

[0030] Guide post 13

[0031] Limit block 14

[0032] Second module 20

[0033] Second substrate 21

[0034] Groove 211

[0035] Concave die 22

[0036] Through hole 221

[0037] Cutting part 23

[0038] Cutting edge band 24

[0039] Head end 25

[0040] Tail end 26

[0041] Cutting edge surface 27

[0042] Cutting teeth 28

[0043] First side 281

[0044] Second side 282

[0045] Pressing block 29

[0046] Elastic member 291

[0047] Guide hole 292

[0048] Drive assembly 30

[0049] Conductive plate 31

[0050] Conductive coil 32

[0051] First insulating plate 33

[0052] Second insulating plate 34

[0053] Material 200

[0054] Depth D

[0055] Distances H, L

[0056] Angles θ1, θ2

[0057] Extrusion shear force F1

[0058] Sliding sawing force F2 Detailed implementation manners

[0059] The following details the implementation manners of the present application. Examples of the implementation manners are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The implementation manners described below with reference to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0060] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for facilitating the description of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, it should be noted that the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0061] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows mutual communication. It can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0062] Please refer to Figure 1 , an embodiment of the present application provides a blanking die 100 for blanking a material 200. Among them, the material 200 is high-strength carbon fiber, and the blanking die 100 is used to cut the high-strength carbon fiber to obtain cut pieces without burrs, notches, wire drawing and other defects. It can be understood that in other embodiments of the present application, the material 200 can be one of glass fiber, titanium alloy thin plate, and high-strength plastic.

[0063] Please refer to Figure 2 and Figure 3 , the blanking die 100 includes a first module 10, a second module 20, and a driving component 30. The first module 10 and the second module 20 are adapted for clamping the material 200 when the mold is closed. The second module 20 includes a cutting member 23, and a spiral cutting edge band 24 is provided on one side of the cutting member 23 facing the first module 10. The driving component 30 is connected to the second module 20, and the driving component 30 is used to drive the second module 20 to move towards the first module 10 along the mold closing direction to close the mold, so that the spiral cutting edge band 24 blanks the material 200, thereby obtaining cut pieces with regular shapes, accurate dimensions, and smooth edges.

[0064] Please refer to Figure 1 and Figure 7 , specifically, the mold closing direction is the Z-axis direction shown in Figure 1 . The X-axis direction is defined as perpendicular to the Z-axis direction. When using the blanking die 100 to cut the material 200, first place the material 200 on the cutting member 23 of the second module 20, and then along the mold closing direction, the first module 10 and the second module 20 move towards each other. At the same time, the spiral cutting edge band 24 can generate the combined action of the Z-axis direction extrusion shear force F1 and the X-axis direction sliding sawing force F2, making it easier to cut the material 200, thereby facilitating the improvement of defects such as burrs, notches, and wire drawing that occur during the blanking process of the material 200.

[0065] Please refer to Figure 3 , Figure 4 and Figure 6, in an embodiment, the cutting member 23 includes a cutting edge strip 24. The cutting edge strip 24 includes a head end 25 and a tail end 26 connected end to end. The head end 25 and the tail end 26 are offset by a distance H of 1 to 4 millimeters in the Z-axis direction. Among them, the head end 25 is close to the first module 10, and the tail end 26 is far from the first module 10, so that the cutting edge strip 24 presents a spiral descending shape from the head end 25 to the tail end 26. During the mold closing process, it is defined that the cutting edge strip 24 sequentially includes point a, point b, and point c. Among them, point a, point b, and point c are gradually far from the first module 10 in sequence. Point a first contacts and punches the material 200, and point c finally contacts the material 200 and completes the final punching. In this embodiment, when observed from the Z-axis direction, the shape of the cutting edge strip 24 is generally square. In other embodiments, the shape of the cutting edge strip 24 can be other shapes other than square that fit the punching area of the material 200, such as an ellipse, a circle, or one of other shapes. It can be understood that in other embodiments, the head end 25 is far from the first module 10, and the tail end 26 is close to the first module 10, so that the cutting edge strip 24 presents a spiral ascending shape from the head end 25 to the tail end 26.

[0066] Please refer to Figure 4 and Figure 5 , in this embodiment, the cutting edge strip 24 includes a cutting edge surface 27 facing the first module 10. The cutting edge surface 27 is concave to form a plurality of cutting teeth 28 arranged at intervals. The distance L between every two adjacent cutting teeth 28 is 1 to 2 millimeters. Among them, the depth D of the cutting teeth 28 is 0 to 0.2 millimeters. The cutting teeth 28 have a first side surface 281 and a second side surface 282 opposite to the first side surface 281. The angle θ1 between the first side surface 281 and the cutting edge surface 27 is 60 to 90 degrees, and the angle θ2 between the second side surface 282 and the cutting edge surface 27 is 60 to 90 degrees. In this way, through the above micro-tooth structure design, the punching process is made more stable, the punching resistance is reduced, and the wear of the cutting edge strip 24 is reduced.

[0067] Please refer to again Figure 2 and Figure 3, in this embodiment, the second module 20 further includes a second substrate 21, a female die 22, a pressing block 29, and an elastic member 291. The female die 22 is disposed on one side of the second substrate 21 facing the first module 10. The female die 22 is provided with a through hole 221, the cutting member 23 is disposed around the through hole 221, the second substrate 21 is provided with a groove 211, and the through hole 221 corresponds to the groove 211. The pressing block 29 is movably disposed in the through hole 221 and the groove 211, and the elastic member 291 is disposed between the bottom of the groove 211 and the pressing block 29. Before the mold is closed, the pressing block 29 protrudes from the cutting edge surface 27 of the cutting edge belt 24 under the push of the elastic member 291, so that the pressing block 29 can hold the material 200. When the mold is closed, the first module 10 and the pressing block 29 first clamp the material 200; then, the pressing block 29 retracts, the elastic member 291 is compressed, and the cutting member 23 cuts the material 200 accordingly. In this way, before cutting, the material 200 can be pre-tightened, so as to reduce the uneven force on the material 200 caused by the spiral cutting edge belt 24 during the cutting process, reduce the problems of displacement or inclination during the cutting of the material 200, and improve the quality of the cut product. It can be understood that in other embodiments of the present application, the pressing block 29 and the elastic member 291 can be omitted, and a part of the material 200 after cutting can fall into the through hole 221.

[0068] In this embodiment, the first module 10 includes a first substrate 11 and a male die 12. The male die 12 is disposed on one side of the first substrate 11. The male die 12 corresponds to the through hole 221 provided in the female die 22, and the male die 12 is used to abut against one side of the material 200. Specifically, before the mold is closed, the male die 12 and the pressing block 29 clamp the material 200, so that the material 200 is pre-tightened. When the mold is closed, the pressing block 29 retracts, and the male die 12 and the cutting edge belt 24 of the cutting member 23 are opposed to each other, so that the cutting edge belt 24 cuts the material 200.

[0069] In this embodiment, the male die 12 includes a base 121 and a convex block 122 disposed on one side of the base 121. The convex block 122 corresponds to the pressing block 29. Before the mold is closed, the convex block 122 and the pressing block 29 can be used to clamp the material 200. When the mold is closed, the pressing block 29 retracts, and the convex block 122 and the cutting edge belt 24 of the cutting member 23 are opposed to each other, so that the cutting edge belt 24 cuts the material 200. It can be understood that in other embodiments of the present application, the base 121 can be omitted. At this time, the convex block 122 is connected to the first substrate 11.

[0070] In this embodiment, the first module 10 further includes a guide post 13 and a limit block 14. One end of the guide post 13 is connected to the side of the first substrate 11 facing the second module 20. The second module 20 is provided with a guide hole 292 corresponding to the guide post 13. The guide post 13 is used to be movably inserted into the guide hole 292. The guide post 13 is used to guide the mold closing action of the first module 10 and the second module 20, ensuring the accuracy and stability of mold closing, and preventing deviation or misalignment during mold closing. One end of the limit block 14 is connected to the side of the first substrate 11 facing the second module 20. The limit block 14 is located between the punch 12 and the guide post 13. The limit block 14 is used to limit the moving stroke of the second module 20, avoid mold damage caused by excessive mold closing, and ensure that the blanking process is carried out within a safe stroke range.

[0071] In this embodiment, the driving assembly 30 includes a conductive plate 31 and a conductive coil 32. The conductive plate 31 is connected to the second substrate 21. The conductive coil 32 is used to pass a changing current to generate a changing magnetic field. The conductive plate 31 is used to sense the changing magnetic field and form a repulsive force with the conductive coil 32, thereby driving the second substrate 21 to move towards the first module 10. Among them, the conductive plate 31 is made of copper. During mold closing, the conductive coil 32 discharges, causing an instantaneous repulsive force to be generated between the conductive coil 32 and the conductive plate 31, pushing the second substrate 21 towards the first module 10, and thus driving the cutting edge strip 24 towards the punch 12 to achieve blanking. Through the above electromagnetic driving method, it is beneficial to achieve ultra-high-speed cutting and at the same time improve the service life of the cut piece 23. For example, the above electromagnetic driving can make the cutting speed reach more than 100 m / s. At this speed, not only can high-strength carbon fiber be completely and neatly cut, but also the cutting force can be reduced by 30%, which is beneficial to improving the service life of the cutting edge strip 24.

[0072] In this embodiment, the blanking die 100 further includes a first insulating plate 33 and a second insulating plate 34. The first insulating plate 33 is arranged corresponding to the conductive plate 31, and the conductive coil 32 is embedded in the first insulating plate 33. The second insulating plate 34 is connected between the conductive plate 31 and the second substrate 21. In this way, current leakage can be effectively prevented, and the safety and stability of the blanking process can be ensured.

[0073] In summary, in the blanking die 100 according to the embodiment of the present application, a spiral cutting edge band 24 is provided on the second module 20, and a driving component 30 is connected to the second module 20. During the mold closing process, the driving component 30 drives the second module 20 to move towards the first module 10. The material 200 located therebetween is blanked by the spiral cutting edge band 24. During the blanking process, the material 200 is not only subjected to the extrusion and shearing force in the Z-axis direction, but also subjected to the sliding sawing force in the X-axis direction, making it easier to cut the material 200. In this way, not only can the cutting efficiency and accuracy be improved, but also the cutting quality can be improved, and the occurrence of defective conditions can be reduced, thus facilitating the meeting of the high-precision cutting requirements in different fields.

[0074] In addition, in terms of the application field, the above blanking die 100 can be used for the manufacturing of automotive parts, and can also be used for the machining of precision parts in the aerospace field or can be applicable to the profile blanking of three-dimensional materials.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A blanking die, characterized in that, include: First module; A second die set is adapted to be combined with the first die set to clamp the material, the second die set comprising a cutting piece, and a spiral cutting edge band is provided on a side of the cutting piece facing the first die set; The driving assembly is connected to the second die set and is used to drive the second die set to move toward the first die set along the die closing direction to close the die, so that the cutting edge band punches the material.

2. The blanking die according to claim 1, characterized in that, The cutting edge band includes a head end and a tail end connected at the first position, and the head end and the tail end are staggered by 1 to 4 mm along the mold closing direction.

3. The blanking die according to claim 2, wherein, The cutting edge band includes a cutting edge surface facing the first module, the cutting edge surface is concave to form a plurality of cutting teeth, and the distance between each two adjacent cutting teeth is 1 to 2 mm.

4. The blanking die according to claim 3, wherein The depth of the cutting teeth is 0 to 0.2 mm. The cutting teeth have a first side surface and a second side surface opposite to the first side surface. The angle between the first side surface and the cutting edge surface is 60 to 90 degrees, and the angle between the second side surface and the cutting edge surface is 60 to 90 degrees.

5. The punching die according to claim 1, wherein The second module further includes a second substrate and a concave mold. The concave mold is arranged on a side of the second substrate facing the first module. The concave mold is provided with an opening, and the cutting piece is arranged around the periphery of the opening.

6. The punching die according to claim 5, wherein: The second module further includes a pressing block and an elastic member. The pressing block is movably disposed in the opening. The elastic member is supported between the bottom of the opening and the pressing block. The pressing block is used to support one side of the material.

7. The punching die according to claim 5, wherein: The first mold assembly includes a first substrate and a convex mold. The convex mold is arranged on one side of the first substrate and corresponds to the concave mold. The convex mold is used to support the other side of the material.

8. The blanking die according to claim 7, wherein, The first module also includes a guide column and a limit block, one end of the guide column is connected to the side of the first substrate facing the second module, the second module is provided with a guide hole corresponding to the guide column, the guide column is used to be movably inserted into the guide hole, one end of the limit block is connected to the side of the first substrate facing the second module, and the limit block is located between the punch and the guide column.

9. The blanking die according to claim 5, characterized in that, The driving component includes a conductive plate and a conductive coil, the conductive plate is connected to the second substrate, the conductive coil is used to pass a changing current to generate a changing magnetic field, and the conductive plate is used to sense the changing magnetic field and form a repulsive force with the conductive coil, thereby driving the second module to move toward the first module.

10. The blanking die according to claim 9, characterized in that, The punching die further includes a first insulating plate and a second insulating plate. The first insulating plate is arranged corresponding to the conductive plate, the conductive coil is embedded in the first insulating plate, and the second insulating plate is connected between the conductive plate and the second substrate.

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