A stamping die for sheet metal part manufacturing

Abstract

This invention provides a stamping die for sheet metal manufacturing, relating to the field of stamping die technology. It includes: a base; a lower support fixedly mounted on the top of the base, a vertical guide rod on the top of the lower support, and a top connecting frame fixedly connected to the top of the vertical guide rod; a forming lower punch fixedly mounted on the top of the lower support, and a movable lifting seat connected to the top of the lower support, the movable lifting seat having a vertical sliding hole inside, through which the vertical guide rod slides. When the movable seat moves upward a certain distance, the stop head contacts the movable seat, causing the movable seat to move the top plate upward. The return spring B contracts under force, and the ejector rod pushes the formed sheet metal part out of the forming lower punch, facilitating material removal. This solves the problem in existing stamping dies for sheet metal manufacturing where, if the formed part is too tightly fitted within the die cavity due to stamping, the operator needs a prying tool to remove it, which can easily damage the formed part during the prying process.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, and in particular to a stamping die for manufacturing sheet metal parts. Background Technology

[0002] In the grand landscape of modern industrial manufacturing, sheet metal parts, with their outstanding advantages of lightweight, high strength and easy formability, are deeply integrated into pillar industries such as automobile manufacturing, aerospace, home appliance production, electronic information and rail transportation. They have become a key cornerstone driving industrial innovation and helping to introduce new products. As the core process carrier for sheet metal part forming, stamping dies precisely control the forming accuracy, production efficiency, quality stability and cost control of sheet metal parts, and are the lifeline for consolidating the core competitive advantage of the sheet metal manufacturing industry.

[0003] For example, Chinese patent "CN111408663B A sheet metal stamping die" includes a frame, an upper template, a lower template, a first stamping die, a second stamping die, and a third stamping die; a hydraulic press and the lower template are mounted on the frame, the upper template is slidably connected to the side wall connecting column of the hydraulic press, the punches of the first stamping die, the second stamping die, and the third stamping die are all installed at the bottom of the upper template and are arranged sequentially from the feeding end to the discharge end of the hydraulic press, the dies of the first stamping die, the second stamping die, and the third stamping die are all installed on the lower template and are arranged sequentially from the feeding end to the discharge end of the hydraulic press, the working end of the first stamping die corresponds to the outline of the connecting part before bending and the position structure of the first mounting hole, the second mounting hole, and the third mounting hole, the working end of the second stamping die corresponds to the position of the bent part and the punch of the second stamping die is clearance-fitted with the first mounting hole.

[0004] Currently, the stamping dies used for sheet metal manufacturing generally rely on manual operation to remove the formed parts from the die cavity after stamping. If the formed parts are too tightly attached to the die cavity due to the stamping action, the operator needs to use a prying tool to complete the removal action, which can easily damage the surface of the formed parts during the prying process and affect the quality of the workpiece. Summary of the Invention

[0005] This invention relates to a stamping die for sheet metal manufacturing, which solves the problem that existing stamping dies for sheet metal manufacturing generally rely on manual operation to remove the formed part from the die cavity after stamping. If the formed part is too tightly attached to the die cavity due to the stamping action, the operator needs to use a prying tool to complete the removal action, which can easily damage the surface of the formed part during the prying process and affect the quality of the workpiece.

[0006] In a first aspect, the present invention provides a stamping die for manufacturing sheet metal parts, specifically comprising: a base, a lower support, a top connecting frame, a forming lower die, a movable lifting seat, a forming upper die, a positioning pressure frame, a return spring A, a discharge top plate, and a return spring B; the lower support is fixedly installed on the top of the base, a vertical guide rod is provided on the top of the lower support, and the top connecting frame is fixedly connected to the top of the vertical guide rod; the forming lower die is fixedly installed on the top of the lower support, and a movable lifting seat is connected to the top of the lower support, the movable lifting seat having a vertical sliding hole inside, allowing the vertical guide rod to slide. A vertical sliding hole is inserted through the vertical guide rod; the vertical guide rod slides in conjunction with the vertical sliding hole to guide the up and down movement of the movable lifting seat, achieving precise mold closing between the lower forming die and the upper forming die; the upper forming die is fixedly installed at the bottom of the movable lifting seat, and the upper forming die is located above the lower forming die. A positioning pressure frame is connected to the outside of the upper forming die, and a return spring A is installed on the top of the positioning pressure frame; a discharge top plate is connected inside the lower support, and the discharge top plate is connected to the lower forming die and the movable lifting seat. A return spring B is installed on the top of the discharge top plate.

[0007] Furthermore, the inner side of the positioning frame slides in contact with the outer side of the forming upper punch, a fixed block is provided on the outside of the forming upper punch, and a movable hole is provided inside the positioning frame. The fixed block is slidably connected in the movable hole. The vertical movement of the positioning frame is constrained by the sliding cooperation mechanism between the fixed block and the movable hole.

[0008] Furthermore, the movable lifting seat has a vertical through hole inside, and a straight rod is provided outside the positioning pressure frame, with the straight rod slidably connected inside the vertical through hole.

[0009] Furthermore, the return spring A is fitted outside the straight rod, with its bottom contacting the positioning pressure frame and its top contacting the movable lifting seat. The return spring A provides a continuous downward force to the positioning pressure frame, achieving the elastic reset function of the positioning pressure frame. When the sheet metal is placed on the top of the forming lower die, the press head of the press drives the movable seat to move downward. The pressure frame contacts the sheet metal first, and the return spring A contracts under force, pressing the edge of the sheet metal tightly, thus pre-fixing the sheet metal and preventing it from shifting during stamping. Subsequently, the forming upper die continues to move downward to complete the stamping operation.

[0010] Furthermore, the lower support is provided with a lower top hole, and the forming lower punch is provided with an upper top hole, which communicates with the lower top hole.

[0011] Furthermore, the bottom of the lower support is provided with a sliding groove, the discharge top plate is slidably connected in the sliding groove, the bottom side of the discharge top plate is in contact with the top side of the base, and the top of the discharge top plate is provided with a top rod, which slides through the lower top hole and the upper top hole. Through the matching of the base and the lower support, the vertical movement range of the discharge top plate is constrained.

[0012] Furthermore, the lower support is provided with a lower guide hole on its exterior, and a force-bearing tie rod is provided at the top of both ends of the discharge top plate, with the force-bearing tie rod sliding through the lower guide hole.

[0013] Furthermore, the reset spring B is fitted outside the force-bearing tie rod, with the bottom of the reset spring B contacting the discharge top plate and the top of the reset spring B contacting the lower support.

[0014] Furthermore, the movable lifting seat is provided with an upper guide hole on its exterior. The top end of the force-bearing tie rod slides through the upper guide hole. A stop is provided at the top end of the force-bearing tie rod. The bottom of the stop contacts the movable lifting seat. With the help of the return spring B, a continuous downward force is applied to the discharge top plate to realize the elastic reset function of the discharge top plate. When the movable seat moves upward a certain distance, the stop contacts the movable seat. The movable seat drives the top plate to move upward. The return spring B is compressed by the force. The ejector rod pushes the formed sheet metal part out of the forming lower punch, which is convenient for material removal.

[0015] This invention provides a stamping die for manufacturing sheet metal parts, which has the following beneficial effects: In use, this invention constrains the vertical movement of the positioning frame through a sliding engagement mechanism between the fixed block and the movable hole. Simultaneously, a return spring A provides a continuous downward force to the positioning frame, achieving its elastic reset function. After the sheet metal is placed on top of the lower forming die, the press head of the press drives the movable lifting seat downwards. The positioning frame contacts the sheet metal first, and the return spring A is compressed under pressure, using the resulting elastic force to press the edges of the sheet metal, achieving a pre-fixing effect. This effectively avoids the risk of displacement or offset of the sheet metal during the stamping process. The upper forming die continues to move downwards to complete the stamping process, effectively improving the stamping accuracy and increasing the product qualification rate. After the upper and lower forming dies separate, the positioning frame moves downwards and resets under the thrust of the return spring A, ensuring that the bottom of the positioning frame is lower than the bottom of the upper forming die. This facilitates the pre-pressing and precise positioning of the sheet metal before the next stamping operation, ensuring efficient connection and stable operation of the entire stamping process.

[0016] Furthermore, the base and lower support work together to constrain the vertical movement range of the discharge top plate. The force-bearing tie rod slides with the lower guide hole, and the push rod slides with the lower top hole, guiding and limiting the discharge top plate to prevent lateral displacement. Simultaneously, the return spring B applies a continuous downward force to the discharge top plate, achieving elastic reset. When the movable lifting seat moves upward to a certain height, the stop head contacts the movable lifting seat, causing the discharge top plate to move upward synchronously. The return spring B is compressed, and the push rod smoothly ejects the formed sheet metal part from the forming die, greatly improving the ease of material removal and effectively avoiding the risk of damage to the workpiece caused by manual prying. When the movable lifting seat moves downward, the discharge top plate moves downward synchronously under the thrust of the return spring B, causing the top of the push rod to retract completely into the upper top hole, preventing interference with the stamping operation and ensuring a smooth stamping process.

[0017] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram: Figure 1 This paper shows a schematic diagram of the overall axial side structure of the stamping die for manufacturing sheet metal parts according to this application; Figure 2 A schematic diagram of the connection structure of the base, lower support and forming lower punch of the stamping die for sheet metal manufacturing of this application is shown; Figure 3 A schematic diagram of the disassembled structure of the base, lower support, and forming lower punch of the stamping die for sheet metal manufacturing of this application is shown; Figure 4 This paper shows a schematic diagram of the connection structure between the lower support and the top connecting frame of the stamping die for manufacturing sheet metal parts according to this application. Figure 5 A schematic diagram of the connection structure of the movable lifting seat, forming upper punch, positioning pressure frame and return spring A of the stamping die for sheet metal manufacturing of this application is shown. Figure 6 A schematic diagram of the movable lifting seat shaft side structure of the stamping die for sheet metal manufacturing of this application is shown; Figure 7 This paper shows a schematic diagram of the disassembled structure of the forming upper punch and the positioning pressure frame of the stamping die for manufacturing sheet metal parts according to this application; Figure 8 A schematic diagram of the discharge top plate axial structure of the stamping die for sheet metal manufacturing of this application is shown.

[0021] Figure label: 1. Base; 2. Lower support; 21. Vertical guide rod; 22. Slide groove; 23. Lower top hole; 24. Lower guide hole; 3. Top connecting frame; 4. Forming lower punch; 41. Upper top hole; 5. Movable lifting seat; 51. Vertical sliding hole; 52. Upper guide hole; 53. Vertical through hole; 6. Forming upper punch; 61. Fixed block; 7. Positioning pressure frame; 71. Movable hole; 72. Straight rod; 8. Return spring A; 9. Discharge top plate; 91. Top rod; 92. Force-bearing tie rod; 921. Stop; 10. Return spring B. Detailed Implementation

[0022] Please refer to Figures 1 to 8 Example 1: This invention proposes a stamping die for sheet metal manufacturing, comprising: a base 1, a lower support 2, a top connecting frame 3, a forming lower punch 4, a movable lifting seat 5, a forming upper punch 6, a positioning pressure frame 7, a return spring A8, a discharge top plate 9, and a return spring B10; the lower support 2 is fixedly installed on the top of the base 1, and a vertical guide rod 21 is provided on the top of the lower support 2, with the top connecting frame 3 fixedly connected to the top of the vertical guide rod 21; the forming lower punch 4 is fixedly installed on the top of the lower support 2, and the movable lifting seat 5 is connected to the top of the lower support 2, with a vertical sliding hole 51 provided inside the movable lifting seat 5, through which the vertical guide rod 21 slides. The vertical guide rod 21 slides with the vertical sliding hole 51 to guide the up and down movement of the movable lifting seat 5, so as to achieve precise mold closing between the forming lower punch 4 and the forming upper punch 6 and effectively avoid misalignment. The forming upper punch 6 is fixedly installed at the bottom of the movable lifting seat 5. The forming upper punch 6 is located above the forming lower punch 4. The forming upper punch 6 is connected to the outside of the positioning pressure frame 7. The top of the positioning pressure frame 7 is equipped with a return spring A8. The lower support 2 is connected to the discharge top plate 9. The discharge top plate 9 is connected to the forming lower punch 4 and the movable lifting seat 5. The top of the discharge top plate 9 is equipped with a return spring B10.

[0023] In this embodiment, the inner side of the positioning frame 7 is in sliding contact with the outer side of the forming upper punch 6. A fixed block 61 is provided on the outside of the forming upper punch 6. A movable hole 71 is provided inside the positioning frame 7. The fixed block 61 is slidably connected to the movable hole 71. A vertical through hole 53 is provided inside the movable lifting seat 5. A straight rod 72 is provided on the outside of the positioning frame 7. The straight rod 72 is slidably connected to the vertical through hole 53. A return spring A8 is fitted on the outside of the straight rod 72. The bottom of the return spring A8 is in contact with the positioning frame 7, and the top of the return spring A8 is in contact with the movable lifting seat 5. By adopting the above technical solution, the vertical movement of the positioning frame 7 is constrained by the sliding engagement mechanism between the fixed block 61 and the movable hole 71. At the same time, the return spring A8 provides a continuous downward force to the positioning frame 7, realizing the elastic reset function of the positioning frame 7. After the sheet metal is placed on top of the forming lower die 4, the press head of the press drives the movable lifting seat 5 to move downward. The positioning frame 7 contacts the sheet metal first. The return spring A8 is compressed under pressure, and the generated elastic force presses the edge of the sheet metal to achieve a pre-fixing effect, effectively avoiding the risk of displacement or offset of the sheet metal during the stamping process. The forming upper die 6 continues to move downward to complete the stamping process, effectively improving the stamping accuracy and increasing the product qualification rate. After the forming upper die 6 separates from the forming lower die 4, the positioning frame 7 moves downward to reset under the pushing force of the return spring A8, so that the bottom position of the positioning frame 7 is lower than the bottom of the forming upper die 6. This creates convenient conditions for the pre-pressing and precise positioning of the sheet metal before the next stamping operation, ensuring the efficient connection and stable operation of the entire stamping process.

[0024] In Example 2, based on Example 1, the lower support 2 has a lower top hole 23 inside, and the forming lower punch 4 has an upper top hole 41 inside, which communicates with the lower top hole 23. The bottom of the lower support 2 has a sliding groove 22, and the discharge top plate 9 is slidably connected to the sliding groove 22. The bottom side of the discharge top plate 9 contacts the top side of the base 1. The top of the discharge top plate 9 has a push rod 91, which slides through the lower top hole 23 and the upper top hole 41. The lower support 2 has a lower guide hole 24 outside, which... The top of both ends of the material top plate 9 are provided with force-bearing tie rods 92, which slide through the lower guide hole 24. The return spring B10 is fitted on the outside of the force-bearing tie rod 92. The bottom of the return spring B10 contacts the material top plate 9, and the top of the return spring B10 contacts the lower support 2. The movable lifting seat 5 is provided with an upper guide hole 52. The top of the force-bearing tie rod 92 slides through the upper guide hole 52. The top of the force-bearing tie rod 92 is provided with a stop 921, and the bottom of the stop 921 contacts the movable lifting seat 5. Using the above technical solution, the base 1 and the lower support 2 cooperate to constrain the vertical movement range of the discharge top plate 9. The force-bearing tie rod 92 slides with the lower guide hole 24, and the push rod 91 slides with the lower top hole 23 to guide and limit the discharge top plate 9, preventing it from shifting left or right. Simultaneously, the return spring B10 applies a continuous downward force to the discharge top plate 9, achieving an elastic return function. When the movable lifting seat 5 moves upward to a certain height, the stop head 921 contacts the movable lifting seat 5, and the movable... The lifting seat 5 moves the discharge top plate 9 upward in sync, and the return spring B10 is compressed. The ejector rod 91 smoothly ejects the formed sheet metal part from the forming lower punch 4, which greatly improves the convenience of material removal and effectively avoids the risk of damage to the workpiece caused by manual prying operation. When the movable lifting seat 5 moves downward, the discharge top plate 9 moves downward in sync under the pushing force of the return spring B10, so that the top of the ejector rod 91 is completely retracted into the upper top hole 41, avoiding interference of the ejector rod 91 with the stamping operation and ensuring a smooth stamping process.

[0025] The working principle of this embodiment is as follows: The sliding engagement mechanism between the fixed block 61 and the movable hole 71 constrains the vertical movement of the positioning frame 7. Simultaneously, the return spring A8 provides a continuous downward force to the positioning frame 7, achieving an elastic reset function. During operation, the sheet metal is placed on top of the lower forming die 4. The press head of the press drives the movable lifting seat 5 downwards, and the positioning frame 7 contacts the sheet metal first. The return spring A8 is compressed under pressure, and the resulting elastic force presses the edges of the sheet metal, achieving a pre-fixing effect and effectively avoiding the risk of displacement or offset during the stamping process. The upper forming die 6 continues to move downwards to complete the stamping process, effectively improving the stamping accuracy. After the upper forming die 6 separates from the lower forming die 4, the positioning frame 7 moves downwards and resets under the pushing force of the return spring A8, making the bottom position of the positioning frame 7 lower than the bottom of the upper forming die 6. This creates conditions for pre-pressing and precise positioning of the sheet metal before the next stamping operation. Convenient conditions; the base 1 and the lower support 2 cooperate to constrain the vertical movement range of the discharge top plate 9, and the force-bearing tie rod 92 slides with the lower guide hole 24, and the push rod 91 slides with the lower top hole 23 to guide and limit the discharge top plate 9, preventing the discharge top plate 9 from shifting left and right. At the same time, the return spring B10 applies a continuous downward force to the discharge top plate 9 to achieve the elastic return function of the discharge top plate 9; when the movable lifting seat 5 moves upward to a certain height, the stop head 9 When the movable lifting seat 5 comes into contact with the ejector pin 5, the ejector pin 5 moves the discharge top plate 9 upward in sync. The return spring B10 is compressed by the force, and the ejector pin 91 smoothly ejects the formed sheet metal part from the forming lower punch 4, greatly improving the convenience of material removal. When the movable lifting seat 5 moves downward, the discharge top plate 9 moves downward in sync under the pushing force of the return spring B10, so that the top of the ejector pin 91 is completely retracted into the upper top hole 41, avoiding interference of the ejector pin 91 with the stamping operation.

Claims

1. A stamping die for manufacturing sheet metal parts, comprising: The base (1), lower support (2), top connecting frame (3), forming lower punch (4), movable lifting seat (5), forming upper punch (6), positioning pressure frame (7), return spring A (8), discharge top plate (9), and return spring B (10) are characterized in that the lower support (2) is fixedly installed on the top of the base (1), and a vertical guide rod (21) is provided on the top of the lower support (2), and the top connecting frame (3) is fixedly connected to the top of the vertical guide rod (21); the forming lower punch (4) is fixedly installed on the top of the lower support (2), and a movable lifting seat (5) is connected to the top of the lower support (2), and the movable lifting seat (5) is connected to the top of the lower support (2). The seat (5) is provided with a vertical sliding hole (51), and the vertical guide rod (21) slides through the vertical sliding hole (51); the bottom of the movable lifting seat (5) is fixedly installed with a forming upper punch (6), the forming upper punch (6) is located above the forming lower punch (4), the forming upper punch (6) is connected to a positioning pressure frame (7) on the outside, and a return spring A (8) is installed on the top of the positioning pressure frame (7); the lower support seat (2) is connected to a discharge top plate (9), the discharge top plate (9) is connected to the forming lower punch (4) and the movable lifting seat (5), and a return spring B (10) is installed on the top of the discharge top plate (9).

2. The stamping die for manufacturing sheet metal parts according to claim 1, characterized in that, The inner side of the positioning frame (7) is in sliding contact with the outer side of the forming upper punch (6). A fixed block (61) is provided on the outside of the forming upper punch (6), and a movable hole (71) is provided inside the positioning frame (7). The fixed block (61) is slidably connected to the movable hole (71).

3. The stamping die for manufacturing sheet metal parts according to claim 1, characterized in that, The movable lifting seat (5) has a vertical through hole (53) inside, and a straight rod (72) is provided on the outside of the positioning pressure frame (7). The straight rod (72) is slidably connected in the vertical through hole (53).

4. A stamping die for manufacturing sheet metal parts according to claim 3, characterized in that, The reset spring A (8) is fitted outside the straight rod (72). The bottom of the reset spring A (8) contacts the positioning pressure frame (7), and the top of the reset spring A (8) contacts the movable lifting seat (5).

5. A stamping die for manufacturing sheet metal parts according to claim 1, characterized in that, The lower support (2) has a lower top hole (23) inside, and the forming lower punch (4) has an upper top hole (41) inside, which is connected to the lower top hole (23).

6. A stamping die for manufacturing sheet metal parts according to claim 5, characterized in that, The bottom of the lower support (2) is provided with a sliding groove (22), the discharge top plate (9) is slidably connected in the sliding groove (22), the bottom side of the discharge top plate (9) is in contact with the top side of the base (1), and the top of the discharge top plate (9) is provided with a top rod (91), which slides through the lower top hole (23) and the upper top hole (41).

7. A stamping die for manufacturing sheet metal parts according to claim 1, characterized in that, The lower support (2) is provided with a lower guide hole (24) on the outside, and the top of both ends of the discharge top plate (9) are provided with a force-bearing tie rod (92), which slides through the lower guide hole (24).

8. A stamping die for manufacturing sheet metal parts according to claim 7, characterized in that, The reset spring B (10) is fitted outside the force-bearing tie rod (92). The bottom of the reset spring B (10) contacts the discharge top plate (9), and the top of the reset spring B (10) contacts the lower support (2).

9. A stamping die for manufacturing sheet metal parts according to claim 7, characterized in that, The movable lifting seat (5) is provided with an upper guide hole (52) on the outside. The top end of the force-bearing tie rod (92) slides through the upper guide hole (52). The top end of the force-bearing tie rod (92) is provided with a stop (921). The bottom of the stop (921) contacts the movable lifting seat (5).

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