A punch press and a punch press die

Abstract

The application relates to the field of stamping processing, in particular to a stamping machine and a stamping die. The stamping die comprises an upper die and a lower die, a sliding plug is slidably connected in the upper die, a first compression spring is fixedly connected between the sliding plug and the upper die, a forming head is arranged in the lower die, an outer cylinder is arranged below the lower die, a rotating cylinder is rotatably connected in the outer cylinder, a falling pipe is arranged on the rotating cylinder, a supplement pipe is arranged on the rotating cylinder, a forming head is arranged in the supplement pipe, and the falling pipe and the supplement pipe are respectively located at three equal parts of the rotating cylinder. A sliding support block is slidably connected in the lower die, a second compression spring is fixedly connected between the sliding support block and the lower die, and a blocking ring is arranged in the lower die. A top plate is slidably connected in the supplement pipe, and a fourth compression spring is fixedly connected between the top plate and the supplement pipe. The stamping die can automatically and quickly replace a damaged part of the die.

Description

Technical Field

[0001] This invention relates to the field of stamping, and more specifically to a stamping machine tool and its stamping die. Background Technology

[0002] Stamping, as a high-efficiency and low-cost metal forming process, is widely used in many fields such as automobile manufacturing, electronics, aerospace, and hardware products due to its advantage of rapidly achieving mass production of complex parts. In the stamping process, the stamping machine tool, as the power actuator, provides stable pressure output for stamping; the stamping die, as the core forming component, directly determines the shape, dimensional accuracy, and surface quality of the workpiece. The synergistic performance of the two is a key factor affecting stamping efficiency, product quality, and production safety. However, existing stamping dies are prone to breakage during processing, and replacement requires time-consuming and labor-intensive manual labor. Summary of the Invention

[0003] This invention provides a stamping machine and a stamping die, the purpose of which is to automatically and quickly replace the damaged parts of a broken die.

[0004] The above objectives are achieved through the following technical solutions:

[0005] A stamping die includes an upper die and a lower die. A sliding plug is slidably connected inside the upper die, and a first compression spring is fixed between the sliding plug and the upper die. A forming head is provided inside the lower die, and an outer cylinder is provided below the lower die. A rotating cylinder is rotatably connected inside the outer cylinder. A drop tube is provided on the rotating cylinder, and a supplementary tube is provided on the rotating cylinder. A forming head is provided inside the supplementary tube. The drop tube and the supplementary tube are located at three equal divisions of the rotating cylinder.

[0006] A sliding support block is slidably connected inside the lower mold, and a second compression spring is fixed between the sliding support block and the lower mold. A retaining ring is provided inside the lower mold.

[0007] A forming head box is provided on the outer cylinder, and multiple forming heads are placed inside the forming head box. A push plate is slidably connected inside the forming head box, and multiple third compression springs are fixedly connected to the push plate and inside the forming head box.

[0008] A top plate is slidably connected inside the replenishment tube, and a fourth compression spring is fixed between the top plate and the replenishment tube.

[0009] A slider is fixed to the outside of the top plate. The outer cylinder is equipped with a ring track, a straight track and an inclined track for the slider to slide. A drop outlet is provided at the bottom of the outer cylinder, located below the forming head.

[0010] The beneficial effects of the stamping machine tool and stamping die of the present invention are as follows:

[0011] In this invention, the easily breakable part of a traditional mold is separated into a forming head. When the forming head breaks, a probe and a pressure detector work together to control the rotation of the lower drum, automatically replacing the forming head and reducing the tediousness of manual replacement, thus improving processing efficiency. Furthermore, replacing only the forming head reduces material waste in the mold. The damaged portion of the forming head after stamping can be marked, facilitating subsequent secondary processing by workers to ensure the quality of the finished product. Attached Figure Description

[0012] Figure 1 A schematic diagram of the overall structure of a stamping machine tool and its stamping die;

[0013] Figure 2 This is a structural schematic diagram of the stamping die section;

[0014] Figure 3 This is a cross-sectional schematic diagram of the stamping die section;

[0015] Figure 4 This is a schematic diagram of the outer cylinder and the rotating cylinder.

[0016] Figure 5 This is a schematic diagram of the rotating drum.

[0017] Figure 6 This is a schematic diagram of the cross-section of the rotating drum;

[0018] Figure 7 This is a schematic diagram of the outer cylinder section;

[0019] Figure 8 This is a structural diagram of the platform section;

[0020] Figure 9 This is a structural diagram of the friction plate and clamping plate.

[0021] Figure 10 This is a structural diagram of the machine tool frame and hydraulic pump section.

[0022] In the figure: Upper mold 11; Sliding plug 101; First compression spring 102; Lower mold 12; Retaining ring 201; Sliding support block 202; Forming head 203; Second compression spring 204; Pressure detector 205; Detector head 206; Outer cylinder 13; Forming head box 301; Push plate 302; Drop outlet 303; Circular track 304; Straight track 305; Inclined track 306; Gear 307; Rotary drum 14; Drop pipe 401; Supplement pipe 402; Top plate 403; Slider 404; Fourth compression spring 405; Platform 15; Friction plate 501; Linkage mechanism 502; Adjusting block 16; Clamping plate 601; Support frame 602; Roller 603; Slide rod 604; Machine tool frame 17; Hydraulic pump 701. Detailed Implementation

[0023] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] like Figures 2 to 7 This is to solve the problem of difficulty in replacing damaged dies during the stamping process.

[0026] The sliding plug 101 is slidably connected inside the upper mold 11. The first compression spring 102 is located between the sliding plug 101 and the upper mold 11. The forming head 203 is located inside the lower mold 12. The outer cylinder 13 is fixed below the lower mold 12. The rotating cylinder 14 is rotatably connected inside the outer cylinder 13. The rotating cylinder 14 is provided with a drop pipe 401 and a replenishment pipe 402. The drop pipe 401 and the replenishment pipe 402 are located at the three equal parts of the rotating cylinder 14.

[0027] During stamping, the upper die 11 is driven to move downwards and press the sheet metal. When it comes into contact with the lower die 12, the forming head 203 in the lower die 12 squeezes the sheet metal and transmits the pressure to the budding part, forcing the material to flow and stretch inside the upper die 11. The sliding plug 101 is slightly wider than the forming head 203, thereby assisting in supporting the sheet metal and preventing warping deformation at the edges. The first compression spring 102 is replaced according to the stamping requirements of different materials in order to adapt to different budding requirements. During stamping, repeated pressing can cause wear on the forming head 203, affecting product precision. Compared to the traditional method of stopping the machine to manually replace the mold, the damaged forming head 203 of this invention can be ejected downwards from the equipment via the drop tube 401. Then, the rotating drum 14 rotates 120°, placing the replenishment tube 402 below the original position of the forming head 203. A new forming head 203 then moves upwards within the replenishment tube 402, achieving rapid mold replacement after mold damage. Further rotating the rotating drum 14 120°, with the solid portion of the drum below the forming head 203, allows for continued pressurization. During stamping, the forming head 203 experiences the most wear in the mold. This mold automatically replaces the forming head 203, reducing workload and material waste compared to the traditional method of replacing the entire mold and then the forming part.

[0028] like Figure 2 and Figure 3To prevent the sheet material around the budding part from wrinkling and deforming during the stamping process.

[0029] The sliding support block 202 is slidably connected inside the lower mold 12, the second spring 204 is disposed between the sliding support block 202 and the lower mold 12, and the retaining ring 201 is fixed inside the lower mold 12.

[0030] During the stamping process, as the upper die 11 moves downward, the sheet metal is pressed between the sliding support block 202 and the upper die 11. Then, as the upper die 11 continues to move, pressing the sheet metal causes the sliding support block 202 to move downward synchronously. At this time, the internal forming head 203 moves to the sliding plug 101 for budding. When the sheet metal is extruded, the upper die 11 and the sliding support block 202 fix the sheet metal around the edges, thereby preventing wrinkles and deformations during plastic deformation.

[0031] like Figure 4 To address the issue of needing to replenish the forming head 203 multiple times during continuous processing.

[0032] The forming head box 301 is connected to the outer cylinder 13. Multiple forming heads 203 are placed inside the forming head box 301. A push plate 302 is slidably connected inside the forming head box 301. Multiple third compression springs are fixedly connected to the push plate 302 and the forming head box 301.

[0033] When the press is performing continuous processing, the side of the replenishing tube 402 is open. When the drum 14 rotates, each time the replenishing tube 402 moves to the forming head box 301, the push plate 302 is pushed by the elastic force of the third compression spring to move the internal forming head 203 into the replenishing tube 402. Then, as the drum 14 rotates, the new forming head 203 can be used for the next replacement, so that the mold can be automatically and quickly replaced during continuous processing.

[0034] like Figure 5 and Figure 6 To solve the problem of moving the forming head 203 into the lower mold 12.

[0035] The top plate 403 is slidably connected in the supplementary tube 402, and the fourth compression spring 405 is fixedly connected between the top plate 403 and the supplementary tube 402.

[0036] Initially, the top plate 403 is at the bottom, and the fourth compression spring 405 is in a compressed state. When the mold needs to be replaced, the rotating cylinder 14 rotates, causing the supplementary tube 402 to move. The compressed fourth compression spring 405 is released, pushing the top plate 403 upward to push the forming head 203 into the lower mold 12.

[0037] like Figure 6 and Figure 7 To solve the problem of resetting the top plate 403.

[0038] A slider 404 is fixed to the outside of the top plate 403. The outer cylinder 13 is provided with an annular track 304, a straight track 305 and an inclined track 306 for the slider 404 to slide. A drop outlet 303 is provided below the outer cylinder 13, and the drop outlet 303 is located below the forming head 203.

[0039] During stamping, the supplementary tube 402 is located at the forming head box 301, and the slider 404 is located in the annular track 304. The width of the slider 404 is wider than the width of the supplementary tube 402 and the forming head box 301, thus allowing it to be fixed in the annular track 304. At this time, the top plate 403 is horizontal with the bottom surface of the forming head box 301, facilitating the movement of the forming head 203 into the supplementary tube 402. When the outer cylinder 13 rotates, the slider 404 moves within the annular track 304. When the supplementary tube 402 rotates to a position below the original forming head 203 in the lower mold 12, the slider 404 moves to the straight track 305 section within the outer cylinder 13. Consequently, the fourth compression spring 405 is released, pushing the top plate 403 upward and pushing the new forming head 203 into the lower mold 12. As the outer cylinder 13 continues to move, the slider 404 moves within the inclined track 306, thereby causing the top plate 403 to reset and compress the fourth compression spring 405, facilitating the subsequent repositioning of the new forming head 203 into the replenishment tube 402. The drop outlet 303 is located below the position of the damaged forming head 203, thus allowing the drop tube 401 to pop out from the drop outlet 303 once it moves below the damaged forming head 203.

[0040] like Figure 4 and Figure 7 To solve the problem of rotating drum 14.

[0041] A motor is installed on the outer cylinder 13, and a gear 307 is rotatably connected to the output shaft of the motor. The rotating cylinder 14 is provided with teeth that mesh with the gear 307. A pressure detector 205 is fixedly connected to the lower mold 12, and a probe head 206 is slidably connected to the pressure detector 205. Marking powder is attached to the upper end of the probe head 206.

[0042] During each stamping process, the sheet metal moves downwards synchronously. After the sheet metal moves for the next processing step, the portion after the initial stamping process moves precisely to the probe head 206. Subsequently, after the forming head 203 breaks, the processed area deforms. The probe head 206 has the same shape and diameter as the forming head 203, and thus, to meet the punching requirements, the probe head 206 is pressed downwards. At this time, the pressure detector 205 below receives a signal, thereby controlling the motor to drive the gear 207 to rotate, which in turn meshes with and drives the rotating drum 14 to rotate one revolution, thus replacing the forming head 203. Simultaneously, the marking powder on the probe head 206 can mark defective parts, allowing for manual repair.

[0043] like Figure 10To enable the upper mold 11 to move downwards for stamping.

[0044] A hydraulic pump 701 is detachably connected to the machine tool frame 17, and the upper mold 11 is fixed to the lower end of the hydraulic pump 701. During stamping, the hydraulic rod 701 extends and retracts, causing the upper mold 11 to move up and down. When the pressure detector 205 is triggered, the hydraulic pump 701 is controlled to stop working. After a period of time, when the forming head 203 is replaced, the hydraulic pump 701 restarts to continue processing.

[0045] like Figure 1 , Figure 8 and Figure 9 To solve the problem of board movement.

[0046] A table 15 is fixedly connected to the machine tool frame 17, and the lower mold 12 is fixedly connected to the table 15. Two sets of linkage mechanisms 502 are rotatably connected to the table 15, and a friction plate 501 is rotatably connected to the other end of each set of linkage mechanisms 502.

[0047] Initially, the sheet metal is placed on the table 15. After each processing is completed, the drive linkage mechanism 502 rotates to drive the friction plate 501 on the other side to perform a circular motion. As the friction plate 501 moves, it first lifts the sheet metal and then moves it to one side. Each time the linkage mechanism 502 rotates once, it moves the sheet metal a certain distance before performing a new stamping operation, thus achieving the purpose of continuous processing.

[0048] like Figure 1 , Figure 8 and Figure 9 To solve the problem of fixing the board material.

[0049] Two sets of adjustment mechanisms are slidably connected on the platform 15. Each set of adjustment mechanisms includes two adjustment blocks 16. A clamping plate 601 is fixedly connected to the adjustment block 16. The adjustment block 16 is locked and fixed to the platform 15 by screws.

[0050] When the plate is driven to move by the friction plate 501, in order to prevent it from shaking, two clamping plates 601 are set to fix the plate in them. The adjusting block 16 is slidably connected to the table plate 15, so that the position of the adjusting block 16 can be set according to the width of the plate. Then, it is fixed by screws. At the same time, by changing the position of the adjusting block 16, different processing positions can be controlled.

[0051] like Figure 1 , Figure 8 and Figure 9 To solve the problem of the entire board moving up and down during processing.

[0052] Each clamping plate 601 is slidably connected to a support frame 602, and each support frame 602 is rotatably connected to multiple rollers 603. Each support frame 602 is detachably connected to a fifth spring between itself and the corresponding adjusting block 16.

[0053] To enable the stamping process, the lower die 12 and the sliding support block 202 must be higher than the table 15. The sheet metal is then placed between the two support frames 602 for support. During each stamping operation, the sheet metal moves up and down, and the fifth spring assists the support frame 602 in resetting the sheet metal. Rollers 603 are installed on the support frame 602 to reduce friction during horizontal movement of the sheet metal.

Claims

1. A stamping die, characterized in that: The upper mold (11) and the lower mold (12) are included. A sliding plug (101) is slidably connected inside the upper mold (11). A first compression spring (102) is fixed between the sliding plug (101) and the upper mold (11). A forming head (203) is provided inside the lower mold (12). An outer cylinder (13) is provided below the lower mold (12). A rotating cylinder (14) is rotatably connected inside the outer cylinder (13). A drop tube (401) is provided on the rotating cylinder (14). A supplement tube (402) is provided on the rotating cylinder (14). A forming head (203) is provided inside the supplement tube (402). The center lines of the drop tube (401) and the supplement tube (402) are 120° apart in the circumferential direction of the rotating cylinder (14). A top plate (403) is slidably connected inside the supplementary tube (402), and a fourth compression spring (405) is fixed between the top plate (403) and the supplementary tube (402). A slider (404) is fixed to the outside of the top plate (403). The outer cylinder (13) is provided with an annular track (304), a straight track (305) and an inclined track (306) for the slider (404) to slide. A drop hole (303) is provided below the outer cylinder (13). The drop hole (303) is located below the forming head (203).

2. The stamping die according to claim 1, characterized in that: A sliding support block (202) is slidably connected inside the lower mold (12), and a second compression spring (204) is fixed between the sliding support block (202) and the lower mold (12). A retaining ring (201) is provided inside the lower mold (12).

3. The stamping die according to claim 1, characterized in that: A forming head box (301) is provided on the outer cylinder (13), and multiple forming heads (203) are placed inside the forming head box (301). A push plate (302) is slidably connected inside the forming head box (301), and multiple third compression springs are fixedly connected inside the push plate (302) and the forming head box (301).

4. The stamping die according to claim 1, characterized in that: A motor is installed on the outer cylinder (13), and a gear (307) is rotatably connected to the output shaft of the motor. The rotating drum (14) is provided with teeth that mesh with the gear (307). A pressure detector (205) is fixedly connected to the lower mold (12), and a probe head (206) is slidably connected to the pressure detector (205). Marking powder is attached to the upper end of the probe head (206).

5. A stamping machine tool, using the stamping die as described in claim 4, characterized in that: Includes a machine tool frame (17), on which a hydraulic pump (701) is detachably connected, and an upper mold (11) is fixed to the lower end of the hydraulic pump (701).

6. The stamping machine tool according to claim 5, characterized in that: A table (15) is fixedly connected to the machine tool frame (17), and the lower mold (12) is fixedly connected to the table (15). Two sets of linkage mechanisms (502) are rotatably connected to the table (15), and a friction plate (501) is rotatably connected to the other end of each set of linkage mechanisms (502).

7. The stamping machine tool according to claim 6, characterized in that: Two sets of adjustment mechanisms are slidably connected on the platform (15). Each set of adjustment mechanisms includes two adjustment blocks (16). A clamp (601) is fixed on the adjustment block (16). The adjustment block (16) is locked to the platform (15) by screws.

8. The stamping machine tool according to claim 7, characterized in that: Each clamp (601) is slidably connected to a support frame (602), each support frame (602) is rotatably connected to multiple rollers (603), and each support frame (602) is detachably connected to a corresponding adjusting block (16) with a fifth spring.

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