A punching and stamping die for annular steel sheets

Abstract

The utility model discloses a kind of annular steel sheet punching stamping die, it is related to stamping die technical field, including lower die base, and the upper die base of being slidably connected in lower die base by guide pillar;Lower die base is provided with lower die kernel, annular groove is opened in lower die kernel, circular table is formed in the center position of annular groove, and material pushing mechanism is arranged in annular groove;Upper die base lower end is provided with stamping column, and the inner groove corresponding with circular table is opened in the lower end of stamping column, so that the edge of stamping column forms the stamping ring corresponding with annular groove;Inner groove is provided with pusher plate inside, pusher plate upper end is provided with pusher spring, pusher plate upper end is also connected with guide rod, and upper die base is opened with the guide hole corresponding with guide rod, guide rod and guide hole are inserted into cooperation, when using pusher spring, pusher plate pushes out the inner hole waste material retained in inner groove during mould opening, reduce artificial intervention cost, avoid waste retention to influence subsequent stamping process, improve stamping production overall efficiency.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a punching die for a ring-shaped steel sheet. Background Technology

[0002] Stamping dies are special process equipment used in cold stamping to process materials (metal or non-metal) into parts; they are commonly known as cold stamping dies. Stamping dies are widely used in the processing of hardware, sheet metal, and steel sheets. In scenarios where ring-shaped workpieces need to be punched from sheet metal, the upper die core is often designed as a frustum with an internal concave structure to fit the hole in the center of the workpiece, thus achieving the forming of both the inner and outer circles in a single stamping operation. This helps improve processing efficiency and workpiece forming accuracy.

[0003] However, with the existing technology, due to the aforementioned concave structure of the upper die core, after the stamping operation is completed, the waste material formed in the inner hole sometimes remains inside the concave structure. It is difficult for workers to quickly clean up this waste material, which not only affects the continuity of the stamping process, but also increases the time cost and difficulty of manual cleaning, thus affecting the overall efficiency of stamping production.

[0004] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a ring-shaped steel sheet punching and stamping die, including a lower die base and an upper die base slidably connected to the lower die base via guide posts; The lower mold base is provided with a lower mold core, the lower mold core is provided with an annular groove, the lower mold core is formed with a frustum at the center of the annular groove, and an ejector mechanism is provided in the annular groove; The lower end of the upper mold base is provided with a stamping column, and the lower end of the stamping column is provided with an inner groove corresponding to the frustum, so that the edge of the stamping column forms a stamping ring corresponding to the annular groove. A pusher plate is provided inside the inner groove. A pusher spring is provided at the upper end of the pusher plate. A guide rod is also connected to the upper end of the pusher plate. A guide hole corresponding to the guide rod is opened on the upper mold base. The guide rod and the guide hole are interlocked.

[0007] As a further embodiment of this utility model: a through hole is provided at the upper end of the inner groove, and the push spring is located in the through hole and sleeved outside the guide rod; The guide hole is connected to the through hole. The upper mold base has a stop groove that is connected to the guide hole. A connecting bolt is provided in the stop groove. A screw hole is provided in the guide rod. The screw of the connecting bolt is screwed into the screw hole, and the nut of the connecting bolt is located in the stop groove.

[0008] As a further embodiment of this utility model: the upper mold base is provided with a mounting base, and the upper end face of the upper mold base is provided with a groove, and there is a movable space between the bottom wall of the groove and the bottom surface of the mounting base for the guide rod to move upward.

[0009] As a further embodiment of this utility model: the inner groove is also provided with a receiving groove, and the pusher plate can be accommodated in the receiving groove.

[0010] As a further embodiment of this utility model: the lower end face of the pusher plate is lower than the lower end face of the stamping column.

[0011] As a further embodiment of this utility model: the top material mechanism includes top material columns located on both sides inside the annular groove, and a top material spring is provided at the lower end of the top material column.

[0012] As a further embodiment of this utility model: a fixing plate is provided between the lower mold base and the lower mold core, a movable cavity is formed between the fixing plate and the lower mold base, and the movable cavity is connected to the annular groove. A bottom plate is provided in the movable cavity, and the bottom end of the ejector pin extends into the movable cavity and is connected to the bottom plate. The lower mold base has a slot, and the ejector spring is located between the base plate and the bottom wall of the slot.

[0013] As a further embodiment of this utility model: a limiting plate is also provided on the lower mold core, and a limiting groove corresponding to the sheet material is opened on the limiting plate.

[0014] Compared with the prior art, the beneficial effects of this technical solution are as follows: A push plate and a push spring are installed in the inner groove of the upper die holder's stamping column. During the stamping process, the truncated cone pushes the workpiece's inner hole scrap into the inner groove, thereby pushing the push plate to squeeze and compress the push spring, allowing the push spring to store elastic potential energy. When stamping is completed and the upper and lower die holders separate, the push spring releases its elastic potential energy to push the push plate out the inner hole scrap retained in the inner groove, reducing manual intervention costs, preventing scrap from remaining and affecting subsequent stamping processes, and improving the overall efficiency of stamping production. Simultaneously, the interlocking fit between the guide rod and the guide hole of the upper die holder ensures the straightness of the push plate's movement, prevents skewing and jamming during the push process, and ensures the reliability of scrap discharge. At the same time, the ring-shaped workpiece that is punched out during mold closing is pushed into the ring groove by the stamping ring, and the internal ejector pin is pressed down to compress the ejector spring at the top, so that the ejector spring stores elastic potential energy. Then, during mold opening, the ejector spring releases elastic potential energy and pushes the ejector pin to push the workpiece out of the ring groove, so that the worker can take away the punched workpiece.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the pusher plate of this utility model; Figure 3 yes Figure 1 Enlarged schematic diagram of a local structure at point A; Figure 4 This is a schematic diagram of the top material structure of this utility model; Figure 5 This is a schematic diagram of the structure of the limiting plate of this utility model; The corresponding labels in the attached diagram are explained as follows: 1. Lower mold base; 11. Groove; 2. Upper mold base; 21. Guide hole; 22. Stop groove; 23. Connecting bolt; 24. Groove; 3. Lower mold core; 31. Annular groove; 32. Frustum; 4. Ejector mechanism; 41. Ejector column; 42. Ejector spring; 5. Stamping column; 51. Inner groove; 52. Stamping ring; 53. Through hole; 54. Receiving groove; 6. Push plate; 61. Push spring; 62. Guide rod; 63. Screw hole; 7. Mounting base; 8. Fixing plate; 81. Movable cavity; 82. Base plate; 9. Limiting plate; 91. Limiting groove. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-5 A ring-shaped steel sheet punching die includes a lower die base 1 and an upper die base 2 slidably connected to the lower die base 1 via guide posts. The lower die base 1 and the upper die base 2 are slidably connected via guide posts to provide precise guidance for the punching process, ensure the positional accuracy of the upper die base 2 when it punches downwards, and ensure the accuracy of the forming dimensions of the inner and outer circles of the workpiece. The lower die base 1 is provided with a lower die core 3, and an annular groove 31 is provided on the lower die core 3. A frustum 32 is formed at the center of the annular groove 31. An ejector mechanism 4 is provided in the annular groove 31. The lower end of the upper die base 2 is provided with a stamping column 5. The lower end of the stamping column 5 is provided with an inner groove 51 corresponding to the frustum 32, so that the edge of the stamping column 5 forms a stamping ring 52 corresponding to the annular groove 31. The annular groove 31 forms a punching groove for the annular workpiece. During stamping, the stamping ring 52 formed by the inner groove 51 at the lower end of the stamping column 5 corresponds to the annular groove 31, so that the annular workpiece is punched and formed when the mold is closed and enters the annular groove 31. The inner hole waste generated by the punching is pushed into the inner groove 51 by the frustum 32. Then, when the upper die base 2 and the lower die base 1 are separated, the ejector mechanism 4 in the annular groove 31 can eject the workpiece so that the worker can take away the stamped workpiece. A pusher plate 6 is provided inside the inner groove 51. A pusher spring 61 is provided at the upper end of the pusher plate 6. A guide rod 62 is also connected to the upper end of the pusher plate 6. A guide hole 21 corresponding to the guide rod 62 is provided on the upper mold base 2. The guide rod 62 and the guide hole 21 are interlocked.

[0020] Specifically, a pusher plate 6 and a pusher spring 61 are installed in the inner groove 51 of the stamping column 5 of the upper die base 2. During the stamping process, the round table 32 pushes the scrap material inside the workpiece into the inner groove 51, which in turn pushes the pusher plate 6 to squeeze and compress the pusher spring 61, allowing the pusher spring 61 to store elastic potential energy. When the stamping is completed and the upper die base 2 and the lower die base 1 separate, the pusher spring 61 releases its elastic potential energy to push the pusher plate 6 to push out the scrap material stuck in the inner groove 51, reducing the cost of manual intervention, avoiding the impact of scrap material retention on subsequent stamping processes, and improving the overall efficiency of stamping production. At the same time, the interlocking cooperation between the guide rod 62 and the guide hole 21 of the upper die base 2 ensures the straightness of the pusher plate 6's movement, prevents skew and jamming during the pusher process, and ensures the reliability of scrap material discharge.

[0021] Preferably, the upper end of the inner groove 51 is provided with a through hole 53, and the push spring 61 is located in the through hole 53 and sleeved on the outside of the guide rod 62. The push spring 61 is sleeved on the outside of the guide rod 62, and the guide rod 62 is used to axially guide the extension and retraction of the push spring 61, so as to prevent the push spring 61 from being skewed or twisted during the stamping compression and mold opening extension process, and to ensure that the push spring 61 can stably transmit elastic force along a straight line, thereby making the reciprocating motion of the push plate 6 more stable and controllable.

[0022] Preferably, the guide hole 21 is connected to the through hole 53, the upper mold base 2 is provided with a stop groove 22 that is connected to the guide hole 21, the stop groove 22 is provided with a connecting bolt 23, the guide rod 62 is provided with a screw hole 63, the screw of the connecting bolt 23 is screwed into the screw hole 63, and the nut of the connecting bolt 23 is located in the stop groove 22.

[0023] Specifically, after the screw of the connecting bolt 23 is screwed into the screw hole 63 on the guide rod 62, its nut is restricted by the stop groove 22, so that the guide rod 62 and the push plate 6 can be placed in the through hole 53 and the inner groove 51 by using the connecting bolt 23, while not affecting the up and down sliding of the guide rod 62 in the guide hole 21 when the push plate 6 moves up.

[0024] Preferably, the upper mold base 2 is provided with a mounting base 7, and the upper end face of the upper mold base 2 is provided with a groove 24. There is a movable space between the bottom wall of the groove 24 and the bottom surface of the mounting base 7 for the guide rod 62 to move upward. The mounting base is used to connect with the output shaft of the hydraulic system, and the groove 24 is provided on the upper mold base 2 so that a movable space is formed between it and the mounting base 7, so that the guide rod 62 can move upward without obstruction and avoid movement conflict.

[0025] Preferably, the inner groove 51 is also provided with a receiving groove 54, and the pusher plate 6 can be accommodated in the receiving groove 54. When the pusher plate 6 is pushed up by the frustum 32, the pusher plate 6 can retract into the receiving groove 54, allowing the frustum 32 to enter the inner groove 51.

[0026] Preferably, the lower end face of the pusher plate 6 is lower than the lower end face of the stamping column 5. In the mold parting state, the lowest point of the pusher plate 6 will be lower than the lower end face of the stamping column 5, so that when the mold is closed and stamping is performed, the pusher plate 6 can contact the sheet metal first and press the sheet metal, thereby achieving the effect of pre-positioning the sheet metal, avoiding displacement of the sheet metal during the stamping process, and improving the stamping accuracy.

[0027] Based on the above embodiments, it is further proposed that the top material mechanism 4 includes top material columns 41 located on both sides inside the annular groove 31, and a top material spring 42 is provided at the lower end of the top material column 41.

[0028] Specifically, when the upper mold base 2 and the lower mold base 1 are closed, the punched annular workpiece is pushed into the annular groove 31 by the stamping ring 52, and the internal ejector pin 41 is pressed down to compress the top ejector spring 42, so that the ejector spring 42 stores elastic potential energy. Then, when the mold is separated, the ejector spring 42 releases the elastic potential energy and pushes the ejector pin 41 to push the workpiece out of the annular groove 31, so that the worker can take away the punched workpiece.

[0029] Preferably, a fixing plate 8 is provided between the lower mold base 1 and the lower mold core 3, and a movable cavity 81 is formed between the fixing plate 8 and the lower mold base 1. The movable cavity 81 is connected to the annular groove 31, and a bottom plate 82 is provided in the movable cavity 81. The bottom end of the ejector pin 41 extends into the movable cavity 81 and is connected to the bottom plate 82. The lower mold base 1 has a slot 11, and the ejector spring 42 is located between the base plate 82 and the bottom wall of the slot 11.

[0030] Specifically, the bottom end of the ejector pin 41 extends into the movable cavity 81 formed between the fixed plate 8 and the lower mold base 1, and is connected to the bottom plate 82 inside the movable cavity 81. The bottom plate 82 guides the movement within the movable cavity 81. The ejector spring 42 is then placed at the lower end of the bottom plate 82, so that the movement of the ejector pin 41 remains vertical when it is pushed in and pushed out, preventing it from tilting within the annular groove 31 and thus preventing the ejector pin 41 from failing to eject the material. The slot 11 on the lower mold base 1 is used to place the ejector spring 42, which can prevent the ejector spring 42 from tilting or twisting during the stamping compression and mold opening extension process.

[0031] Preferably, a limiting plate 9 is also provided on the lower die core 3. The limiting plate 9 has a limiting groove 91 corresponding to the sheet material. During the continuous stamping production of the sheet material, the limiting groove 91 on the limiting plate 9 can be used to keep the position of the sheet material consistent during translation.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A punching and stamping die for annular steel sheets, characterized in that, It includes a lower mold base (1) and an upper mold base (2) that is slidably connected to the lower mold base (1) via guide posts; The lower mold base (1) is provided with a lower mold core (3), and an annular groove (31) is provided on the lower mold core (3). A frustum (32) is formed at the center of the annular groove (31) of the lower mold core (3), and an ejector mechanism (4) is provided in the annular groove (31). The upper mold base (2) is provided with a stamping column (5) at its lower end. The stamping column (5) has an inner groove (51) corresponding to the truncated cone (32) at its lower end, so that the edge of the stamping column (5) forms a stamping ring (52) corresponding to the annular groove (31). The inner groove (51) is provided with a pusher plate (6), the upper end of the pusher plate (6) is provided with a pusher spring (61), the upper end of the pusher plate (6) is also connected with a guide rod (62), the upper mold base (2) is provided with a guide hole (21) corresponding to the guide rod (62), and the guide rod (62) and the guide hole (21) are interlocked.

2. The annular steel sheet punching and stamping die according to claim 1, characterized in that, The inner groove (51) has a through hole (53) at its upper end, and the push spring (61) is located in the through hole (53) and sleeved on the outside of the guide rod (62); The guide hole (21) is connected to the through hole (53). The upper mold base (2) is provided with a stop groove (22) that is connected to the guide hole (21). A connecting bolt (23) is provided on the stop groove (22). A screw hole (63) is provided on the guide rod (62). The screw of the connecting bolt (23) is screwed into the screw hole (63), and the nut of the connecting bolt (23) is located in the stop groove (22).

3. The annular steel sheet punching and stamping die according to claim 2, characterized in that, The upper mold base (2) is provided with a mounting base (7), and the upper end face of the upper mold base (2) is provided with a groove (24). There is a movable space between the bottom wall of the groove (24) and the bottom surface of the mounting base (7) for the guide rod (62) to move upward.

4. The annular steel sheet punching and stamping die according to claim 3, characterized in that, The inner groove (51) is also provided with a receiving groove (54), and the pusher plate (6) can be accommodated in the receiving groove (54).

5. The annular steel sheet punching and stamping die according to claim 4, characterized in that, The lower end face of the pusher plate (6) is lower than the lower end face of the stamping column (5).

6. The annular steel sheet punching die according to any one of claims 1-5, characterized in that, The top material mechanism (4) includes top material columns (41) located on both sides inside the annular groove (31), and a top material spring (42) is provided at the lower end of the top material column (41).

7. The annular steel sheet punching and stamping die according to claim 6, characterized in that, A fixing plate (8) is provided between the lower mold base (1) and the lower mold core (3). A movable cavity (81) is formed between the fixing plate (8) and the lower mold base (1). The movable cavity (81) is connected to the annular groove (31). A bottom plate (82) is provided inside the movable cavity (81). The bottom end of the ejector pin (41) extends into the movable cavity (81) and is connected to the bottom plate (82). The lower mold base (1) is provided with a slot (11), and the ejector spring (42) is located between the base plate (82) and the bottom wall of the slot (11).

8. The annular steel sheet punching and stamping die according to claim 7, characterized in that, The lower mold core (3) is also provided with a limiting plate (9), and the limiting plate (9) is provided with a limiting groove (91) corresponding to the plate material.

Images