A punching die facilitating switching of a punching punch

Abstract

The utility model discloses a kind of punching die of punch pin changing, it is related to die stamping technology field, including workbench, support frame, punching head, the workbench top is fixedly provided with support frame, the support frame is fixedly connected with punch cylinder, the punch cylinder output end is fixedly connected with installation folding seat, the installation folding seat is provided with punch pin changing assembly, punch pin changing assembly drives different punching head vertically downward.This die is realized the quick switching of different punching head by punch pin changing assembly, without manual disassembly, substantially shorten switching time consumption, improve production efficiency;While vertical limiting component is accurately positioned to rectangular seat by V-shaped groove, can ensure that punching head always moves along vertical direction during stamping process, effectively avoid the problem of punch pin inclination caused by the cumulative error of servo motor rotation, guarantee punch pin and female die accurate alignment, improve punching size precision and hole wall smoothness, satisfy the precision machining demand of multi-specification hole type.

Description

Technical Field

[0001] This utility model relates to the field of mold stamping technology, and in particular to a punching die that is easy to switch punching punches. Background Technology

[0002] Punching dies are specialized tooling commonly used in stamping processes. They are mainly used to punch holes or cuts of preset shapes and sizes into workpieces such as sheet metal and profiles. Utilizing the power provided by a press, they separate and shape the material through the shearing action of the cutting edge, enabling batch and high-efficiency processing with stable precision. Widely used in industries such as hardware, auto parts, and electronics, they are an indispensable key piece of equipment in stamping processes.

[0003] In the field of punching die processing, the processing of multiple hole shapes requires frequent replacement of punching punches. Traditional die punch replacement relies on manual disassembly and assembly, which is not only cumbersome and time-consuming, but also prone to affecting punching accuracy due to positioning deviation. Some dies that use servo motors to drive different punching punches to switch to the working position lack a strict vertical limiting structure. When the servo motor is used repeatedly, the cumulative error of rotation will cause the punching punch to be switched to not maintain a vertical state, and the punch and the die on the worktable will not be aligned, which can easily lead to processing defects such as punching size deviation and rough hole wall. Summary of the Invention

[0004] The purpose of this utility model is to solve the problems mentioned in the background art mentioned above in the prior art, and to propose a punching die that is easy to switch punching punches.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A punching die that facilitates switching punches includes a worktable, a support frame, and punching heads. The support frame is fixedly installed on the top of the worktable, and a stamping cylinder is fixedly connected to the support frame. A mounting bracket is fixedly connected to the output end of the stamping cylinder, and a punch switching component is installed on the mounting bracket. The punch switching component drives different punching heads to face vertically downwards. The support frame is provided with a vertical limiting component on its side, which restricts the punch head from moving strictly in the vertical direction when the stamping cylinder extends or retracts. An extension folding rod is vertically fixed to the rear side of the support frame. A series safety interlocking component is provided on the extension folding rod. The series safety interlocking component only allows the punch switching component to operate when it is away from the worktable surface and the vertical limit component is in the retracted position.

[0006] Optionally, the punch switching assembly includes a servo motor, a rectangular base, and a punching head, with the servo motor fixedly mounted on the side of the mounting base.

[0007] Optionally, a rectangular base is fixedly connected to the output end of the servo motor, and punch heads are fixedly connected to both the upper and lower surfaces of the rectangular base.

[0008] Optionally, the vertical limiting component includes a horizontal cylinder and a guide frame. The horizontal cylinder is fixedly connected to the side of the support frame, and the output end of the horizontal cylinder is fixedly connected to the guide frame. A V-shaped groove is provided on the top of the guide frame, and the width of the V-shaped groove is equal to the width of the rectangular seat.

[0009] Optionally, the series safety interlocking assembly includes a push-button micro switch, a mounting lever, a first push column, and a second push column. The push-button micro switch is fixedly connected to the side of the extended lever. The push-button micro switch is electrically connected to the servo motor control circuit. The trigger end of the push-button micro switch is fixedly connected to the mounting lever. The mounting lever includes a vertical section and a horizontal section. A horizontal inclined platform is fixedly connected to the horizontal section of the mounting lever.

[0010] Optionally, the vertical section of the mounting folding rod is fixedly connected to a vertical inclined platform, and both the vertical and horizontal inclined platforms have a folded surface at one end. The first pushing column is fixedly connected to the side of the guide frame, and the second pushing column is fixedly connected to the side of the mounting folding seat.

[0011] Optionally, the end of the first push column contacts the folded surface of the horizontal inclined platform, and the end of the second push column contacts the folded surface of the vertical inclined platform.

[0012] Compared with the prior art, the present invention has the following advantages: 1. This mold achieves rapid switching between different punch heads through a punch switching component, eliminating the need for manual disassembly and assembly, significantly reducing switching time and improving production efficiency; at the same time, the vertical limiting component precisely limits the rectangular seat through a V-groove, ensuring that the punch head always moves vertically during the stamping process, effectively avoiding the punch tilting problem caused by the cumulative error of the servo motor rotation, ensuring precise alignment of the punch and die, improving the punch size accuracy and hole wall smoothness, and meeting the precision machining needs of multiple hole specifications.

[0013] 2. The series safety interlock components of this mold provide double safety protection. The punch switching component is only allowed to operate when the mounting base is away from the worktable and the vertical limit component is retracted. This completely eliminates the risk of accidentally triggering the stamping action or the limit structure interfering with the switching during the punch switching process, and avoids mold collision damage and safety accidents. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 for Figure 1 Another perspective structural diagram.

[0016] Figure 3 This is a schematic diagram of the vertical limiting component.

[0017] Figure 4 This is a schematic diagram of a series safety interlock assembly.

[0018] In the diagram: 1. Support frame; 2. Worktable; 3. Stamping cylinder; 4. Horizontal cylinder; 5. Extension bending rod; 6. Mounting bending seat; 61. Second push column; 7. Guide frame; 71. V-groove; 72. First push column; 8. Rectangular seat; 81. Punching head; 9. Servo motor; 10. Button-type micro switch; 11. Horizontal inclined platform; 110. Bending surface; 12. Mounting bending rod; 13. Vertical inclined platform. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figures 1-4 A punching die for easy switching of punching punches includes a worktable 2, a support frame 1, and punching heads 81. The support frame 1 is bolted to the top of the worktable 2. A punching cylinder 3 is bolted to the support frame 1. A mounting bracket 6 is bolted to the output end of the punching cylinder 3. A punch switching assembly is provided on the mounting bracket 6. The punch switching assembly drives different punching heads 81 to move vertically downward. The punch switching assembly includes a servo motor 9, a rectangular base 8, and punching heads 81. The servo motor 9 is bolted to the side of the mounting bracket 6. The output end of the servo motor 9 is fixed to the rectangular base 8 by a coupling. Punching heads 81 are bolted to both the top and bottom of the rectangular base 8. The single rotation angle of the servo motor 9 is set to 180 degrees.

[0021] A vertical limiting component is provided on the side of the support frame 1. This component strictly restricts the vertical movement of the punch head 81 when the stamping cylinder 3 extends or retracts. The vertical limiting component includes a horizontal cylinder 4 and a guide frame 7. The horizontal cylinder 4 is bolted to the side of the support frame 1. The output end of the horizontal cylinder 4 is fixedly connected to the guide frame 7. A V-groove 71 is provided on the top of the guide frame 7. The width of the V-groove 71 is equal to the width of the rectangular base 8. (Reference) Figure 3 The V-groove 71 includes a flared groove and a rectangular groove. The width of the rectangular groove is equal to the width of the rectangular base 8. The flared groove facilitates guiding the rectangular base 8 into the rectangular groove. In addition, the height of the guide frame 7 in the vertical direction is greater than the height of the rectangular base 8, which facilitates the guide frame 7 to guide the rectangular base 8 within a certain distance in the vertical direction.

[0022] The rear side of the support frame 1 is vertically fixed with an extension folding rod 5 by bolts. The extension folding rod 5 is equipped with a series safety interlock assembly. The series safety interlock assembly only allows the punch switching assembly to operate when it is away from the worktable 2 and the vertical limit assembly is in the retracted position. This prevents the punch switching assembly from colliding with the fixed mold at the top of the worktable 2 when it is operating, and also prevents the vertical limit assembly from colliding with the punch head 81 when it is limiting and guiding.

[0023] The series safety interlocking assembly includes a push-button micro switch 10, a mounting lever 12, a first push post 72, and a second push post 61. The push-button micro switch 10 is bolted to the side of the extension lever 5. The push-button micro switch 10 is electrically connected to the control circuit of the servo motor 9. It is a normally closed push-button micro switch (the contact is closed under normal conditions and opens when pressed). The normally closed switch can ensure that the control circuit of the servo motor 9 is conductive when not pressed, thus meeting the normal start-up conditions.

[0024] The trigger end of the push-button micro switch 10 is fixedly connected to a mounting lever 12. The mounting lever 12 includes a vertical section and a horizontal section. A horizontal inclined platform 11 is fixedly welded to the horizontal section of the mounting lever 12. A vertical inclined platform 13 is fixedly connected to the vertical section of the mounting lever 12. A folded surface 110 is opened at one end of both the vertical inclined platform 13 and the horizontal inclined platform 11. The folded surface 110 includes a vertical surface and an inclined surface. When the first push column 72 and the second push column 61 move from the inclined surface to the vertical surface of the folded surface 110, the push-button micro switch 10 on the side of the mounting lever 12 will be activated.

[0025] The first push column 72 is fixedly connected to the side of the guide frame 7, and the second push column 61 is fixedly connected to the side of the mounting bracket 6. The end of the first push column 72 contacts the folded surface 110 opened on the horizontal inclined platform 11, and the end of the second push column 61 contacts the folded surface 110 opened on the vertical inclined platform 13.

[0026] The specific implementation steps and principles of this utility model are as follows: When the stamping cylinder 3 and the horizontal cylinder 4 are in the retracted state, on the one hand, one end of the second push column 61 contacts the horizontal section of the mounting lever 12, without triggering the push button micro switch 10 through the mounting lever 12; on the other hand, one end of the first push column 72 contacts the vertical section of the mounting lever 12, without triggering the push button micro switch 10 through the mounting lever 12. At this time, the servo motor 9 can start normally, and the servo motor 9 drives the rectangular base 8 to rotate 180 degrees.

[0027] When the mold performs the punching action, the horizontal cylinder 4 is activated, the V-groove 71 wraps around the rectangular seat 8, and when the stamping cylinder 3 extends, the rectangular seat 8 moves strictly in the vertical direction. When the horizontal cylinder 4 extends, on the one hand, one end of the second push column 61 contacts the folding surface 110 of the horizontal inclined table 11, and the push button micro switch 10 is triggered by the installed folding rod 12, so the servo motor 9 cannot be started. At the same time, when the folding seat 6 moves down to the cavity set near the worktable 2, the second push column 61 contacts the folding surface 110 of the vertical inclined table 13.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A punching die for easy switching of punching punches, comprising a worktable (2), a support frame (1), and a punching head (81), characterized in that, The workbench (2) is fixedly provided with a support frame (1), and a stamping cylinder (3) is fixedly connected to the support frame (1). The output end of the stamping cylinder (3) is fixedly connected to a mounting bracket (6). A punch switching component is provided on the mounting bracket (6). The punch switching component drives different punch heads (81) to face vertically downward. The support frame (1) is provided with a vertical limiting component on its side. The vertical limiting component restricts the punch head (81) from moving strictly in the vertical direction when the stamping cylinder (3) extends and retracts. The support frame (1) is vertically fixed to the rear side with an extension folding rod (5). The extension folding rod (5) is equipped with a series safety interlocking component. The series safety interlocking component only allows the punch switching component to operate when it is away from the worktable (2) and the vertical limit component is in the retracted position.

2. A punching die for easy switching of punching punches according to claim 1, characterized in that, The punch switching assembly includes a servo motor (9), a rectangular base (8), and a punch head (81). The servo motor (9) is fixedly mounted on the side of the mounting base (6).

3. A punching die for easy switching of punching punches according to claim 2, characterized in that, The output end of the servo motor (9) is fixedly connected to a rectangular base (8), and punch heads (81) are fixedly connected to both the upper and lower surfaces of the rectangular base (8).

4. A punching die for easy switching of punching punches according to claim 1, characterized in that, The vertical limiting component includes a horizontal cylinder (4) and a guide frame (7). The horizontal cylinder (4) is fixedly connected to the side of the support frame (1). The output end of the horizontal cylinder (4) is fixedly connected to the guide frame (7). A V-groove (71) is opened on the top of the guide frame (7). The width of the V-groove (71) is equal to the width of the rectangular seat (8).

5. A punching die for easy switching of punching punches according to claim 3, characterized in that, The series safety interlocking assembly includes a push-button micro switch (10), a mounting lever (12), a first push column (72), and a second push column (61). The push-button micro switch (10) is fixedly connected to the side of the extension lever (5). The push-button micro switch (10) is electrically connected to the control circuit of the servo motor (9). The trigger end of the push-button micro switch (10) is fixedly connected to the mounting lever (12). The mounting lever (12) includes a vertical section and a horizontal section. The horizontal section of the mounting lever (12) is fixedly connected to a horizontal inclined platform (11).

6. A punching die for easy switching of punching punches according to claim 5, characterized in that, The vertical section of the mounting folding rod (12) is fixedly connected to a vertical inclined platform (13). One end of the vertical inclined platform (13) and the horizontal inclined platform (11) is provided with a folded surface (110). The first push column (72) is fixedly connected to the side of the guide frame (7), and the second push column (61) is fixedly connected to the side of the mounting folding seat (6).

7. A punching die for easy switching of punching punches according to claim 6, characterized in that, The end of the first push column (72) contacts the folded surface (110) of the horizontal inclined platform (11), and the end of the second push column (61) contacts the folded surface (110) of the vertical inclined platform (13).

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