Stamping die structure with reverse right-angle synchronous bending function
By designing a stamping die structure for reverse right-angle synchronous bending and using a combination of fixed and movable punches, the problem of synchronous bending at different bending heights in traditional dies has been solved, achieving efficient synchronous bending and forming, and improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-04-07
AI Technical Summary
In existing technologies, traditional bending structures cannot achieve synchronous bending at different bending heights, resulting in uneven stress on the lower reverse right-angled part during the bending process, causing surface deformation and tearing, which affects product quality and forming stability.
Design a stamping die structure for synchronous right-angle bending in reverse. It adopts a fixed punch and a movable punch, and achieves synchronous bending of the high and low reverse right-angle parts through the cooperation of the material support block and spring. It ensures that the upper stamping end faces of the movable punch and the fixed punch are on the same horizontal plane in the initial state, and utilizes the elastic structure to balance the lifting force and the material fit.
It achieves simultaneous bending of the high and low reverse right-angle sections, avoiding the deformation and tearing problems caused by traditional step bending, improving the stamping quality and consistency, and increasing processing efficiency and product yield.
Smart Images
Figure CN224087754U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to stamping die technical field especially relates to a reverse right angle synchronous bending's stamping die structure. BACKGROUND
[0002] With the continuous promotion of automobile product development, technology continues to innovate and optimize, the update iteration cycle of automobile product is shortened day by day, and the structure design of parts and components presents the trend of diversification and complication.Under this background, hardware stamping parts as common parts in automobile structural parts, its structure form and manufacturing process also continue to evolve.The existing certain hardware stamping product 1 (such as Figure 1 ) has multiple reverse right angle bending structures similar to Z-shaped structure to meet the complex installation or matching requirements.However, the height of such bending structure is different at different parts, which is usually divided into low reverse right angle bending part and high reverse right angle bending part, which brings certain challenges to die design, stamping forming and assembly process.
[0003] However, in the prior art, the traditional bending structure has obvious deficiencies when facing stamping parts with multiple bending heights.Because the bending punch usually cannot complete multiple bending parts with different heights at the same time, the bending process needs to be carried out in steps, resulting in the sequence of bending of each bending part.In the process of stamping and bending the high reverse right angle part 1-1, the low reverse right angle part 1-2 is in a suspended state and cannot obtain effective support because it has not contacted the forming die, which is prone to uneven stress phenomenon.Thus, surface deformation occurs in the low bending part, and serious problems such as material tearing and surface scratches may occur, affecting the appearance quality and structural performance of the product.In addition, multiple step bending also increases the complexity of the forming process and the difficulty of die design, reduces the production efficiency and product consistency, and is difficult to meet the requirements of high-quality and high-stability stamping manufacturing. UTILITY MODEL CONTENTS
[0004] In view of the problem in the prior art that different bending height parts cannot be bent synchronously, resulting in uneven stress of the low reverse right angle part in the bending process, thus causing surface deformation and tearing, affecting product quality and forming stability, the utility model provides a reverse right angle synchronous bending stamping die structure.
[0005] The utility model discloses a stamping die structure of reverse right angle synchronous bending is realized, a kind of fixed plate, pressing block, material supporting block and fixed seat, the pressing block is fixed in the fixed plate, the material supporting block is located below the pressing block and is installed in the fixed seat, it is characterized by comprising fixed punch and movable punch, the fixed punch and movable punch are located in the side of the material supporting block, the fixed punch is fixed in the fixed seat, the material supporting block and movable punch are installed in the fixed seat in the way of vertical movement, the fixed seat is installed with the material supporting spring that the material supporting block is exerted to upward elastic and the stamping spring that the movable punch is exerted to upward elastic;The stamping spring is pressed to the movable punch to the state of upper limit position, and the upper stamping end surface of the movable punch and the upper stamping end surface of the fixed punch are located in the same horizontal plane.
[0006] In the above technical solution, preferably, the fixed seat is installed with pressing block, and the pressing block is arranged above the movable punch.
[0007] In the above technical solution, preferably, the upper stamping end surface of the movable punch and the fixed punch is provided with stamping part close to the pressing block and recessed groove part located at rear side of the stamping part.
[0008] In the above technical solution, preferably, the inner side of the fixed punch forms vertical guide groove, the movable punch is embedded in the vertical guide groove, and the movable punch moves vertically in the vertical guide groove.
[0009] In the above technical solution, preferably, the lower part of the material supporting block is provided with vertical guide hole, and the fixed seat is installed with vertical guide rod matched with the vertical guide hole.
[0010] The stamping die structure of reverse right angle synchronous bending provided by the utility model has the following beneficial effects:
[0011] First, by setting a fixed punch and a movable punch, and ensuring that their upper stamping faces are on the same horizontal plane in the initial state, simultaneous bending of the high-position reverse right-angle section and the low-position reverse right-angle section can be achieved, avoiding the sequential force problem caused by the step-by-step bending required in traditional molds. Second, both the movable punch and the material support block are vertically movable and mounted on the fixed base, and are equipped with stamping springs and material support springs respectively, giving them good elasticity and buffering capabilities during the stamping process. This effectively improves the force balance and material fit during bending, reducing the risk of deformation due to local suspension. Third, the low-position reverse right-angle section is always effectively supported by the material support block during the stamping process, solving the technical problems of easy suspension, easy tearing, and easy deformation in traditional processes, and significantly improving the bending quality. Finally, the overall structure is compact and stable, making it easy to integrate into existing stamping equipment. It helps improve the consistency of stamping, processing efficiency, and product yield, and is suitable for one-time precision stamping of various complex structural parts, possessing good application value. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the workpiece structure in this utility model.
[0013] Figure 2 This is a schematic diagram of the structure of this utility model before the stamping process;
[0014] Figure 3 yes Figure 2 A sectional view;
[0015] Figure 4 This is a schematic diagram of the structure of this utility model after stamping.
[0016] Figure 5 yes Figure 4 A sectional view;
[0017] Figure 6 This is a schematic diagram of the structure of the fixed punch and the movable punch in this utility model; Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.
[0019] To address the problem in existing technologies where simultaneous bending of sections with different bending heights is impossible, resulting in uneven stress on the lower, reverse right-angled section during bending, leading to surface deformation, tearing, and affecting product quality and forming stability, this utility model provides a stamping die structure for synchronous reverse right-angle bending. To further illustrate the structure of this utility model, a detailed description is provided below in conjunction with the accompanying drawings:
[0020] Please see Figures 2-5 A stamping die structure for reverse right-angle synchronous bending includes a fixed plate 2, a pressure block 3, a material support block 4, a fixed seat 5, a fixed punch 6, a movable punch 7, a material support spring 8, and a stamping spring 9.
[0021] The pressure block is fixed to the fixing plate.
[0022] The material support block is located below the pressure block and mounted on a fixed base. Specifically, the material support block is mounted on the fixed base in a vertically movable manner. In this embodiment, the lower part of the material support block is provided with a vertical guide hole, and the fixed base is equipped with a vertical guide rod that mates with the vertical guide hole. The number of guide rods is not limited and is used for stable guidance. The fixed base is equipped with a material support spring that applies an upward elastic force to the material support block.
[0023] The fixed punch and the movable punch are located on one side of the material support block. The fixed punch is fixed to the fixed base, and the movable punch is installed on the fixed base in a vertically moving manner.
[0024] Please see Figure 6 The movable punch and the fixed punch have a stamping portion 7-1 near the pressure block and a relief groove portion 7-2 located on the rear side of the stamping portion on their upper stamping end faces. A vertical guide groove 6-1 is formed on the inner side of the fixed punch, and the movable punch is embedded in the vertical guide groove, moving vertically within the vertical guide groove. Specifically, a vertical guide groove is formed between two sets of stamping portions and relief groove portions symmetrically formed on the left and right sides of the fixed punch, and the cross-section of the movable punch matches the vertical guide groove, forming a slider-type component that moves vertically within the vertical guide groove.
[0025] The fixed base is equipped with a compression spring that applies an upward force to the movable punch. When the compression spring presses the movable punch to its upper limit position, the upper stamping end face of the movable punch and the upper stamping end face of the fixed punch are on the same horizontal plane. The compression spring pressing the movable punch to its upper limit position can be a position where the compression spring freely pushes the movable punch, or a position where the maximum extension length of the spring is limited by an external pin. That is, before the movable and fixed punches contact the workpiece, the upper stamping end faces of the movable and fixed punches are on the same horizontal plane to ensure that the stamped part of the workpiece simultaneously contacts both the movable and fixed punches and is stamped synchronously. When the material support block is not pressed downwards, the upper end face used to place the workpiece is not lower than the upper stamping end face.
[0026] In this embodiment, the material support spring and the stamping spring are disposed in the countersunk hole of the fixing base. The material support spring and the stamping spring are compression springs, and those skilled in the art can choose other elastic elements that provide upward elastic force to replace them.
[0027] The fixed base is equipped with a pressure block 10, which is positioned above the movable punch. When the pressure block moves downward to its lower limit position, the lower part of the pressure block presses against the movable punch. That is, the position where the pressure block moves downward to its lower limit position is the position where the workpiece is stamped. In this position, the pressure block presses against the movable punch to prevent the spring force of the movable punch from deforming the already stamped low-position right-angle bend.
[0028] The working principle of this mold is as follows: A workpiece that has been directly bent once is formed by a second reverse right-angle stamping using this mold, requiring different heights for the reverse right-angle sections. The workpiece is placed on the support block, with the bent portion from the first right-angle bend facing downwards in the clearance groove to ensure the workpiece is placed horizontally. The punch press drives the fixed plate, pressure block, and pressure block downwards. The pressure block and support block hold the workpiece down, causing it to continue moving downwards. Simultaneously, the stamping sections of the movable and fixed punches begin to move upwards relative to the workpiece, thus completing the stamping process. Because the movable punch has a flexible, movable structure, it moves downwards during the stamping process, resulting in a shorter bending stroke, thus forming the lower reverse right-angle section. The fixed punch, on the other hand, performs a relatively longer bending stroke, forming the higher reverse right-angle section. The lower and higher reverse right-angle sections begin and complete simultaneously. After stamping, the pressure block holds the movable punch down.
[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A stamping die structure for reverse right-angle synchronous bending, comprising a fixed plate, a pressure block, a support block, and a fixed base, wherein the pressure block is fixed to the fixed plate, and the support block is located below the pressure block and installed on the fixed base, characterized in that: The device includes a fixed punch and a movable punch, which are located on one side of the material support block. The fixed punch is fixed to the fixed base, and the material support block and the movable punch are mounted on the fixed base in a vertically movable manner. The fixed base is equipped with a material support spring that applies an upward elastic force to the material support block and a punching spring that applies an upward elastic force to the movable punch. When the punching spring presses the movable punch to its upper limit position, the upper punching end face of the movable punch and the upper punching end face of the fixed punch are located on the same horizontal plane.
2. The stamping die structure for reverse right-angle synchronous bending according to claim 1, characterized in that: The fixed base is equipped with a pressure block, which is located above the movable punch. When the pressure block moves downward to the lower limit position, the lower part of the pressure block presses against the movable punch.
3. The stamping die structure for reverse right-angle synchronous bending according to claim 2, characterized in that: The upper stamping end face of the movable punch and the fixed punch is provided with a stamping part near the pressure block and a relief groove part located on the rear side of the stamping part.
4. The stamping die structure for reverse right-angle synchronous bending according to claim 2, characterized in that: The inner side of the fixed punch forms a vertical guide groove, and the movable punch is embedded in the vertical guide groove, and the movable punch moves vertically in the vertical guide groove.
5. The stamping die structure for reverse right-angle synchronous bending according to claim 4, characterized in that: The lower part of the material support block is provided with a vertical guide hole, and the fixed base is equipped with a vertical guide rod that cooperates with the vertical guide hole.