A stamping die for assembling and cutting a steel plate

Abstract

The utility model discloses a kind of stamping die for steel sheet assembly cutting belongs to stamping die field.The stamping die for steel sheet assembly cutting, including the frame that can be up and down and the die cutting knife being located in the bottom of frame, frame bottom and located in the side of die cutting knife is equipped with first indentation boss and second indentation boss, first indentation boss is located between die cutting knife and second indentation boss, and the distance between first indentation boss bottom and steel sheet top is less than the distance between second indentation boss bottom and steel sheet top;Frame inside is equipped with first adjusting assembly, and first adjusting assembly is used to adjust the distance between first indentation boss and die cutting knife and the distance between second indentation boss and first indentation boss.The utility model is by double indentation structure, and it is conducive to improving section quality and die cutting knife and the service life of mould;Meanwhile, indentation boss level and height position are adjustable, and it is convenient to punch according to different specifications steel sheet, to enhance the versatility and adaptability of mould.

Description

Technical Field

[0001] This utility model relates to the field of stamping dies, and in particular to a stamping die for assembling and cutting steel plates. Background Technology

[0002] Stamping is a common metal processing method widely used in the manufacturing industry. It involves using dies and stamping equipment to press metal sheets into shapes and sizes to obtain parts of the desired dimensions. The blanking process involves cutting the metal sheet to the required shape and size. During blanking, the cutting edge of the die shears the metal sheet to obtain the workpiece of the desired shape.

[0003] Currently, in steel plate punching processes, conventional direct punching methods, when dealing with thicker or higher-strength steel plates, are prone to uneven stress distribution in the shearing zone during the punching process due to the increased material thickness or strength. Stress concentration not only easily leads to poor cross-sectional quality and increased burr height in the steel plate, but also means that the cutting edge may have to withstand extremely high instantaneous impact loads during a single punching operation, easily causing localized chipping or micro-cracks on the cutting edge, thereby reducing the service life of the die. Utility Model Content

[0004] This utility model provides a stamping die for assembling and cutting steel plates, which can solve the problems of existing stamping dies for assembling and cutting steel plates, which not only easily result in poor cross-sectional quality of steel plates and increased burr height, but also that the cutting edge may have to withstand extremely high instantaneous impact loads during a single punching, which can easily cause local chipping or micro-cracks on the cutting edge, thereby reducing the service life of the die.

[0005] A stamping die for assembling and cutting steel plates includes a vertically movable frame and a cutting blade disposed at the bottom of the frame. A first indentation boss and a second indentation boss are provided at the bottom of the frame and on one side of the cutting blade. The first indentation boss is located between the cutting blade and the second indentation boss, and the distance between the bottom of the first indentation boss and the top of the steel plate is less than the distance between the bottom of the second indentation boss and the top of the steel plate.

[0006] The frame is provided with a first adjustment component, which is used to adjust the distance between the first indentation boss and the punching blade and the distance between the second indentation boss and the first indentation boss. The first adjustment component includes a first mounting plate disposed above the first indentation boss and a second mounting plate disposed above the second indentation boss. The bottom of the first mounting plate and the second mounting plate are both provided with a second adjustment component, which is used to adjust the height position of the first indentation boss and the second indentation boss.

[0007] Preferably, the first adjustment assembly further includes a first guide rod fixed inside the frame, a second guide rod fixed to one side of the first indentation boss, and a positioning assembly. The first indentation boss and the second indentation boss both slide on the first guide rod, and the second indentation boss slides on the second guide rod. The positioning assembly is used to fix the positions of the first indentation boss and the second indentation boss.

[0008] Preferably, the positioning component includes a positioning groove with a trapezoidal structure and a first screw that moves inside the positioning groove. The first guide rod and the second guide rod both have positioning grooves inside. The first screw is inserted inside the first mounting plate and the second mounting plate. The first screw is threaded with a nut.

[0009] Preferably, the second adjusting assembly includes a connecting plate and a second screw inserted inside the connecting plate. The connecting plate is fixed to the outer side of both the first indentation boss and the second indentation boss. The second screw is fixed to the outer side of both the first mounting plate and the second mounting plate. A nut is threaded onto the second screw.

[0010] Preferably, the cutting edge of the punching tool is configured with an inclined structure.

[0011] Preferably, the first adjustment component further includes a first scale embedded inside the frame and a second scale fixed to the outside of the first mounting plate, and the top of the first mounting plate and the second mounting plate are both fixed with an indicator rod facing the corresponding first scale and the second scale.

[0012] Preferably, a base plate is provided below the frame, and a fixing frame is fixed on the top of the base plate and on the side near the punching blade, and the fixing frame has a through groove inside.

[0013] Preferably, the fixing frame is internally threaded with a lead screw, and the through groove is provided with a limiting plate, with one end of the lead screw rotatably connected to the limiting plate.

[0014] Preferably, ball bearings are installed on the top of the base plate, the side wall of the through groove, and one side of the limiting plate.

[0015] Preferably, the zero mark of the first scale is aligned with the center of the punching blade, and the zero mark of the second scale is aligned with the center of the first indentation boss.

[0016] This utility model provides a stamping die for assembling and cutting steel plates, which has the following beneficial effects:

[0017] 1. By setting the first and second guide rods, the horizontal positions of the first and second indentation bosses are adjusted. The first screw and positioning groove are used to position the indentation bosses, ensuring they match the cutting length of the steel plate and that the indentation zone coincides with the cutting zone. During the stamping process, the cutting blade moves downwards. The second indentation boss first applies a shallow indentation to the steel plate, forming an initial stress concentration zone. Subsequently, the first indentation boss applies a deep indentation, effectively reducing the punching force and promoting uniform material fracture. Finally, the cutting blade completes the cutting. This stepped double indentation structure makes the steel plate shear fracture more uniform, which is beneficial for improving the cross-sectional quality. Furthermore, the staged indentation design disperses the punching stress, reducing the risk of blade breakage and improving the service life of the cutting blade and die.

[0018] 2. When the indentation boss is installed on the mounting plate through the cooperation of the connecting plate and the second screw, the indentation boss can be moved up and down by loosening the nut to adjust the extension length of the connecting plate. Then, the nut can be tightened to secure the second screw and the connecting plate. Since the heights of the first and second indentation bosses are adjustable, it is easy to adjust the distance between them and the top of the steel plate to adjust the indentation depth according to the steel plate of different thicknesses. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a stamping die for assembling and cutting steel plates provided by this utility model. Figure 1 ;

[0020] Figure 2 A schematic diagram of the internal structure of a stamping die for assembling and cutting steel plates, provided by this utility model;

[0021] Figure 3 This utility model provides a stamping die for assembling and cutting steel plates. Figure 2 A schematic diagram of the structure viewed from below;

[0022] Figure 4 A cross-sectional view of the first mounting plate and the first guide rod of a stamping die for assembling and cutting steel plates provided by this utility model;

[0023] Figure 5 This utility model provides a stamping die for assembling and cutting steel plates. Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 6 This utility model provides a schematic diagram of the structure of a stamping die for assembling and cutting steel plates, including a base plate, a fixing frame, ball bearings, a limiting plate, and a lead screw.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Frame; 2. Punching blade; 3. First indentation boss; 4. Second indentation boss; 5. First mounting plate; 6. Second mounting plate; 7. First guide rod; 8. Second guide rod; 9. Positioning groove; 10. First screw; 11. Connecting plate; 12. Second screw; 13. First scale; 14. Indicator rod; 15. Second scale; 16. Base plate; 17. Fixing bracket; 18. Ball bearing; 19. Lead screw; 20. Limiting plate. Detailed Implementation

[0027] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0028] like Figures 1 to 6 As shown in the figure, this utility model provides a stamping die for assembling and cutting steel plates, including a vertically movable frame 1 and a cutting blade 2 located at the bottom of the frame 1. A first indentation boss 3 and a second indentation boss 4 are provided at the bottom of the frame 1 and on one side of the cutting blade 2. The first indentation boss 3 is located between the cutting blade 2 and the second indentation boss 4, and the distance between the bottom of the first indentation boss 3 and the top of the steel plate is less than the distance between the bottom of the second indentation boss 4 and the top of the steel plate, achieving a stepped indentation depth. A first adjustment component is provided inside the frame 1. The first adjustment component is used to adjust the distance between the first indentation boss 3 and the cutting blade 2 and the distance between the second indentation boss 4 and the first indentation boss 3. The first adjustment component includes a first mounting plate 5 located above the first indentation boss 3 and a second mounting plate 6 located above the second indentation boss 4.

[0029] Before punching thicker steel plates, the frame 1 and the punching blade 2 are moved downwards by a cylinder. A second indentation boss 4 first applies a shallow indentation to the steel plate, creating an initial stress concentration zone. Then, a first indentation boss 3 applies a deep indentation, reducing the punching force and causing the steel plate to fracture. Finally, the punching blade 2 completes the cut. The stepped double indentation structure, formed by the indentation bosses, results in more uniform shearing of the steel plate, a smoother cut surface, and reduced burr height, improving subsequent assembly accuracy. Furthermore, the staged indentation design helps release the punching stress of the punching blade 2, preventing instantaneous overload of the cutting edge, thus reducing the risk of cutting edge breakage and extending the service life of the punching blade 2 and the die.

[0030] Adjust the height difference between the punching blade 2, the first indentation boss 3, and the second indentation boss 4 so that when the punching blade 2 completes the cutting, the first indentation boss 3 forms a deep indentation on the shallow indentation of the steel plate, and the second indentation boss 4 forms a shallow indentation on the steel plate, which facilitates the continuous punching of the steel plate.

[0031] Furthermore, a first adjustment component is provided to adjust the position of the indentation boss in order to better adapt to the processing requirements of steel plates of different specifications, thereby enhancing the versatility and adaptability of the mold.

[0032] In some specific implementation plans, such as Figure 2 and Figure 4 As shown, the first adjustment assembly also includes a first guide rod 7 fixed inside the frame 1, a second guide rod 8 fixed to one side of the first indentation boss 3, and a positioning assembly. The first indentation boss 3 and the second indentation boss 4 both slide on the first guide rod 7, and the second indentation boss 4 slides on the second guide rod 8. The positioning assembly is used to fix the position of the first indentation boss 3 and the second indentation boss 4. The positioning assembly includes a positioning groove 9 with a trapezoidal structure and a first screw 10 movable inside the positioning groove 9. The first guide rod 7 and the second guide rod 8 both have positioning grooves 9 inside. The first mounting plate 5 and the second mounting plate 6 both have the first screw 10 inserted inside. The hexagonal head of the first screw 10 moves inside the positioning groove 9. The first screw 10 is threaded with a nut.

[0033] Adjust the positions of the first indentation boss 3 and the second indentation boss 4 according to the cutting length of the steel plate. Loosen the nut on the first screw 10 and slide the first indentation boss 3 and the second indentation boss 4 along the first guide rod 7 and the second guide rod 8. Then tighten the nut to fix the position. The adjustable horizontal position of the first indentation boss 3 and the second indentation boss 4 makes it easy to adjust the horizontal position of the indentation strip according to the cutting length of the steel plate, so that the indentation strip and the cutting strip are better aligned.

[0034] In some specific implementation plans, such as Figure 2 As shown, the first adjustment component also includes a first scale 13 embedded inside the frame 1 and a second scale 15 fixed to the outside of the first mounting plate 5. The top of the first mounting plate 5 and the second mounting plate 6 are both fixed with indicator rods 14 facing the corresponding first scale 13 and second scale 15. The zero mark of the first scale 13 is aligned with the center of the punching blade 2, and the zero mark of the second scale 15 is aligned with the center of the first indentation boss 3 to ensure that the indentation strip is aligned with the strip to be cut.

[0035] When the first indentation boss 3 is adjusted, its indicator rod 14 moves on the first scale 13 to better control the adjustment distance; when the second indentation boss 4 is adjusted, its indicator rod 14 moves on the second scale 15 to better control the adjustment distance.

[0036] In some specific implementation plans, such as Figure 2 , Figure 3 and Figure 5As shown, both the first mounting plate 5 and the second mounting plate 6 are equipped with second adjustment components at their bottoms. To ensure the stability of the connection between the indentation boss and the mounting plate, four sets of second adjustment components are symmetrically arranged at equal intervals between each indentation boss and the mounting plate. The second adjustment components are used to adjust the height of the first indentation boss 3 and the second indentation boss 4. The second adjustment component includes a connecting plate 11 and a second screw 12 inserted inside the connecting plate 11. The connecting plate 11 is fixed to the outside of both the first indentation boss 3 and the second indentation boss 4. A rectangular groove is opened inside the connecting plate 11, and the second screw 12 is located inside the rectangular groove. The second screw 12 is fixed to the outside of both the first mounting plate 5 and the second mounting plate 6, and a nut is threaded onto each of the second screw 12. To enhance the stability of the nut connection, a spring washer or a double nut anti-loosening structure is provided at the nut.

[0037] When the indentation boss is installed on the mounting plate through the cooperation of the connecting plate 11 and the second screw 12, the indentation boss can be moved up and down by loosening the nut to adjust the different extension lengths of the connecting plate 11, and then the nut can be tightened to secure the second screw 12 to the connecting plate 11. Since the heights of the first indentation boss 3 and the second indentation boss 4 are adjustable, it is easy to adjust the distance between them and the top of the steel plate, so as to adjust the indentation depth according to the steel plate of different thicknesses.

[0038] In some specific implementation plans, such as Figure 1 and Figure 6 As shown, a base plate 16 is provided below the frame 1. A fixing frame 17 is fixedly installed on the top of the base plate 16 and on the side near the punching blade 2. The fixing frame 17 has a through groove inside, and a lead screw 19 is threadedly connected inside the fixing frame 17. A limiting plate 20 is provided inside the through groove. One end of the lead screw 19 is rotatably connected to the limiting plate 20, and the other end is fixed to a turntable. Ball bearings 18 are installed on the top of the base plate 16, the side wall of the through groove, and one side of the limiting plate 20. The side of the base plate 16 near the fixing frame 17 is provided with a boss structure to support the steel plate and cooperate with the punching blade 2 for punching work. The ball bearings 18 on the base plate 16 are flush with the boss, and the ball bearings 18 on the side wall of the through groove and one side of the limiting plate 20 are arranged opposite each other.

[0039] When the steel plate to be cut is placed on the ball bearing 18 and fed towards the cutting blade 2, the movement is smoother and less strenuous, especially for thick steel plates. When the steel plate to be cut is inserted into the through groove, the rotating screw 19 pushes the limiting plate 20, so that the two sides of the steel plate are in close contact with the ball bearing 18, which positions the steel plate during the feeding process and ensures the free movement of the steel plate.

[0040] In some specific implementation plans, such as Figure 1 As shown, the cutting edge of the punching cutter 2 is designed with an inclined structure to disperse the maximum shearing force required for a single cut. By progressively cutting into the steel plate section, the impact force borne by the cutting edge is reduced, which helps to extend the service life.

[0041] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution will now be briefly explained in conjunction with specific application scenarios:

[0042] First, when the steel plate to be cut is inserted into the through groove, the rotating screw 19 pushes the limiting plate 20 so that the two sides of the steel plate are in close contact with the ball bearings 18, which facilitates the positioning of the steel plate during the feeding process.

[0043] Then, adjust the positions of the first indentation boss 3 and the second indentation boss 4 according to the cutting length of the steel plate, loosen the nut on the first screw 10, slide the first indentation boss 3 and the second indentation boss 4 along the first guide rod 7 and the second guide rod 8, and then tighten the nut to fix the position. The adjustable horizontal position of the first indentation boss 3 and the second indentation boss 4 facilitates adjusting the horizontal position of the indentation strip according to the cutting length of the steel plate, allowing the indentation strip to better overlap with the cutting strip.

[0044] Secondly, the indentation depth is adjusted according to the different thicknesses of the steel plate. By loosening the nut and moving the indentation boss up and down, the extension length of the connecting plate 11 is adjusted, and then the nut is tightened to secure the second screw 12 to the connecting plate 11. Since the heights of the first indentation boss 3 and the second indentation boss 4 are adjustable, it is easy to adjust the distance between them and the top of the steel plate, thereby controlling the indentation depth.

[0045] Finally, the cylinder pushes the frame 1 and the punching blade 2 downwards. The second indentation boss 4 first applies a shallow indentation to the steel plate, forming an initial stress concentration zone; then the first indentation boss 3 applies a deep indentation to the steel plate, reducing the punching force and causing the steel plate material to fracture; finally, the punching blade 2 completes the cutting. By setting the indentation bosses to form a stepped double indentation structure, the steel plate shearing fracture is more uniform, the cross-section after punching is flatter, and the burr height is reduced to improve the subsequent assembly accuracy; moreover, the staged indentation design helps to release the punching stress of the punching blade 2, avoids instantaneous overload of the cutting edge, thereby reducing the risk of cutting edge breakage and improving the service life of the punching blade 2 and the mold.

[0046] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A stamping die for assembling and cutting steel plates, comprising a vertically movable frame (1) and a cutting blade (2) disposed at the bottom of the frame (1), characterized in that, The frame (1) has a first indentation boss (3) and a second indentation boss (4) at the bottom and on one side of the punching blade (2). The first indentation boss (3) is located between the punching blade (2) and the second indentation boss (4), and the distance between the bottom of the first indentation boss (3) and the top of the steel plate is less than the distance between the bottom of the second indentation boss (4) and the top of the steel plate. The frame (1) is provided with a first adjustment component. The first adjustment component is used to adjust the distance between the first indentation boss (3) and the punching blade (2) and the distance between the second indentation boss (4) and the first indentation boss (3). The first adjustment component includes a first mounting plate (5) located above the first indentation boss (3) and a second mounting plate (6) located above the second indentation boss (4). The bottom of the first mounting plate (5) and the second mounting plate (6) are both provided with a second adjustment component. The second adjustment component is used to adjust the height position of the first indentation boss (3) and the second indentation boss (4).

2. The stamping die for assembling and cutting steel plates as described in claim 1, characterized in that, The first adjustment assembly further includes a first guide rod (7) fixed inside the frame (1), a second guide rod (8) fixed on one side of the first indentation boss (3), and a positioning assembly. The first indentation boss (3) and the second indentation boss (4) slide on the first guide rod (7), and the second indentation boss (4) slides on the second guide rod (8). The positioning assembly is used to fix the position of the first indentation boss (3) and the second indentation boss (4).

3. A stamping die for assembling and cutting steel plates as described in claim 2, characterized in that, The positioning component includes a positioning groove (9) with a trapezoidal structure and a first screw (10) movable inside the positioning groove (9). The first guide rod (7) and the second guide rod (8) are both provided with positioning grooves (9). The first mounting plate (5) and the second mounting plate (6) are both inserted with the first screw (10). The first screw (10) is threaded with a nut.

4. A stamping die for assembling and cutting steel plates as described in claim 1, characterized in that, The second adjustment assembly includes a connecting plate (11) and a second screw (12) inserted inside the connecting plate (11). The connecting plate (11) is fixed on the outer side of the first indentation boss (3) and the second indentation boss (4). The second screw (12) is fixed on the outer side of the first mounting plate (5) and the second mounting plate (6). The second screw (12) is threaded with a nut.

5. A stamping die for assembling and cutting steel plates as described in claim 4, characterized in that, The cutting blade (2) is designed with an inclined structure.

6. A stamping die for assembling and cutting steel plates as described in claim 2, characterized in that, The first adjustment component also includes a first scale (13) embedded inside the frame (1) and a second scale (15) fixed to the outside of the first mounting plate (5). The top of the first mounting plate (5) and the second mounting plate (6) are both fixed with an indicator rod (14) facing the corresponding first scale (13) and second scale (15).

7. A stamping die for assembling and cutting steel plates as described in claim 6, characterized in that, The frame (1) is provided with a base plate (16) below it. A fixing frame (17) is fixed on the top of the base plate (16) and on the side near the punching blade (2). The fixing frame (17) is provided with a through groove inside.

8. A stamping die for assembling and cutting steel plates as described in claim 7, characterized in that, The fixing frame (17) is internally threaded with a lead screw (19), and a limiting plate (20) is provided inside the through groove. One end of the lead screw (19) is rotatably connected to the limiting plate (20).

9. A stamping die for assembling and cutting steel plates as described in claim 8, characterized in that, Ball bearings (18) are installed on the top of the base plate (16), the side wall of the through groove, and one side of the limiting plate (20).

10. A stamping die for assembling and cutting steel plates as described in claim 6, characterized in that, The zero mark of the first scale (13) is aligned with the center of the punch (2), and the zero mark of the second scale (15) is aligned with the center of the first indentation boss (3).

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