A double-action inclined wedge structure of a punch press
Patent Information
- Application Number
- CN202521976897.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-09-12
AI Technical Summary
对于一些具有负角(又称倒扣)结构的汽车冲压零件产品，负角结构即产品局部出现的与模具开模方向(通常为垂直方向)形成反向倾斜或凸起、凹陷的角度特征，传统模具上模的垂直运动无法直接实现对产品负角结构的成型，且在开模时负角结构会与模具的成型部件发生干涉，无法实现产品的顺利脱料，出现料带无法上浮的问题，导致产品变形、划伤甚至损坏模具
[0009]本实用新型的上模与下模合模时，插刀下移并通过第一倾斜楔面与第一倾斜配合面接触配合从而推动靠块和第一滑块在下模上向右滑动，同时第二倾斜楔面与第二倾斜配合面接触配合从而推动第二滑块在第一滑块上向左滑动，从而使冲头与成型公相向移动，提供两个相向的侧冲力对产品进行侧向冲压，保证汽车冲压零件产品的负角结构能够顺利成型；上模与下模开模时，插刀上移离开靠块和第二滑块，通过第一复位弹簧的弹力作用带动第一滑块在下模上向左滑动进行复位，通过第二复位弹簧的弹力作用带动第二滑块在第一滑块上向右滑动进行复位，冲头和成型公均能动作，冲头和成型公相背移动使冲头和成型公抽离产品的负角结构区域，使产品能够顺利脱模。
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Figure CN224657827U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stamping die technology, and in particular to a double-moving wedge structure for a stamping die. Background Technology
[0002] Automotive stamping parts utilize dies to apply pressure to sheet metal, causing plastic deformation or separation to obtain automotive components of the required shape and size. For some automotive stamping parts with negative angles (also known as undercuts), these negative angles refer to localized angles on the product that are tilted, bulging, or concave in the opposite direction to the die opening direction (usually perpendicular). The vertical movement of the upper die in traditional molds cannot directly form these negative angles. Furthermore, during die opening, the negative angles interfere with the forming components of the die, preventing smooth material removal and causing the strip to fail to float, leading to product deformation, scratches, or even die damage. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a double-moving wedge structure for stamping dies, which ensures that the negative angle structure of the product can be formed smoothly and that the material can be easily ejected when the die is opened.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0005] A double-acting wedge structure for a stamping die includes an upper die and a lower die. A cutter is fixedly connected to the upper die, and a first inclined wedge surface and a second inclined wedge surface are respectively provided on the left and right sides of the bottom of the cutter. A first slider is slidably connected to the lower die. A first return spring is provided at the bottom of the first slider, and a support block is fixedly connected to the first slider below the first inclined wedge surface. A first inclined mating surface is provided at one end of the support block near the first inclined wedge surface. When the cutter moves down, it pushes the support block and the first slider to slide to the right on the lower die. A second slider is slidably connected to the first slider below the second inclined wedge surface. A second return spring is provided at the bottom of the second slider, and a second inclined mating surface is provided at one end of the second slider near the second inclined wedge surface. A punch is fixedly connected to the other end. A forming die opposite to the punch is fixedly connected to the first slider. When the cutter moves down, it also pushes the second slider to slide to the left on the first slider, so as to drive the punch to move toward the forming die and perform lateral stamping forming of the product.
[0006] In some embodiments, a first guide groove is provided on the bottom right side of the first slider; the first reset spring is a nitrogen spring, which is fixedly connected to the lower mold, and the piston rod of the first reset spring abuts against the first guide groove.
[0007] In some embodiments, a second guide groove is provided on the left side of the bottom of the second slider; the second return spring is a nitrogen spring, which is fixedly connected to the first slider, and the piston rod of the second return spring abuts against the second guide groove.
[0008] Compared with the prior art, this utility model achieves at least the following beneficial effects:
[0009] When the upper and lower molds of this invention are closed, the insert moves downward and engages with the first inclined wedge surface and the first inclined mating surface, thereby pushing the abutment block and the first slider to slide to the right on the lower mold. At the same time, the second inclined wedge surface engages with the second inclined mating surface, thereby pushing the second slider to slide to the left on the first slider. This causes the punch and the forming man to move in opposite directions, providing two opposing lateral punching forces to laterally punch the product, ensuring that the negative angle structure of the automotive stamped parts can be successfully formed. When the upper and lower molds are opened, the insert moves upward and away from the abutment block and the second slider. The first return spring causes the first slider to slide to the left on the lower mold for reset, and the second return spring causes the second slider to slide to the right on the first slider for reset. Both the punch and the forming man can move. The punch and the forming man move in opposite directions, causing the punch and the forming man to be pulled away from the negative angle structure area of the product, allowing the product to be successfully demolded. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;
[0011] Figure 2 This is an exploded view of an embodiment of this application;
[0012] Figure 3 This is a schematic diagram of the bottom structure of the first slider in an embodiment of this application;
[0013] Figure 4 This is a schematic diagram of the bottom structure of the second slider in an embodiment of this application;
[0014] Figure 5 This is a schematic diagram of the punch and forming die in an embodiment of this application.
[0015] The numbers in the diagram are as follows: 1. Inserting knife; 11. First inclined wedge surface; 12. Second inclined wedge surface; 13. Return groove; 2. First slider; 21. First guide groove; 3. Support block; 31. First inclined mating surface; 4. Second slider; 41. Second inclined mating surface; 42. Second guide groove; 5. First return spring; 6. Second return spring; 7. Punch; 8. Forming male; 9. First guide plate; 10. First protrusion; 20. Second guide plate; 30. Second protrusion; 40. V-shaped guide rail; 50. V-shaped slider; 60. Self-lubricating slide plate; 70. Return hook; 80. Product. Detailed Implementation
[0016] The present invention will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of this application more complete and to fully convey the concept of the present application to those skilled in the art.
[0017] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Moreover, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0018] like Figures 1-5As shown in the embodiment of this application, a double-acting wedge structure for a stamping die includes an upper die and a lower die. A cutter 1 is fixedly connected to the upper die, and the cutter 1 has a first inclined wedge surface 11 and a second inclined wedge surface 12 on its left and right sides respectively. A first slider 2 is slidably connected to the lower die, and a first return spring 5 is provided at the bottom of the first slider 2. The first return spring 5 is used to reset the first slider 2. A support block 3 is fixedly connected to the first slider 2 below the first inclined wedge surface 11. The end of the support block 3 near the first inclined wedge surface 11 has a first inclined mating surface 31. When the cutter 1 moves downward, it pushes the support block 3 and the first slider 2 to slide to the right on the lower die. A second slider 4 is slidably connected to the block 2 below the second inclined wedge surface 12. A second return spring 6 is provided at the bottom of the second slider 4. The second return spring 6 is used to reset the second slider 4. A second inclined mating surface 41 is provided at one end of the second slider 4 near the second inclined wedge surface 12, and a punch 7 is fixedly connected to the other end. A forming male 8 opposite to the punch 7 is fixedly connected to the first slider 2. A first forming surface and a second forming surface are respectively provided on the opposite surfaces of the punch 7 and the forming male 8. When the insert 1 moves down, it also pushes the second slider 4 to slide to the left on the first slider 2, so as to drive the punch 7 to move toward the forming male 8 and perform lateral stamping forming on the product 80.
[0019] When the upper and lower molds of this invention are closed, the insert 1 moves downward and engages with the first inclined wedge surface 11 and the first inclined mating surface 31, thereby pushing the abutment block 3 and the first slider 2 to slide to the right on the lower mold. The piston rod of the first return spring 5 retracts. At the same time, the second inclined wedge surface 12 engages with the second inclined mating surface 41, thereby pushing the second slider 4 to slide to the left on the first slider 2. The piston rod of the second return spring 6 retracts, thereby causing the punch 7 and the forming die 8 to move towards each other, providing two opposing side punching forces to perform side punching on the product 80, ensuring that the negative angle structure of the automotive stamping part product 80 can be formed smoothly. The upper and lower molds open. At this time, the inserter 1 moves upward away from the block 3 and the second slider 4. The piston rod of the first return spring 5 extends, and the first slider 2 is driven to slide to the left on the lower mold by the elastic force of the first return spring 5 to reset. The piston rod of the second return spring 6 extends, and the second slider 4 is driven to slide to the right on the first slider 2 to reset by the elastic force of the second return spring 6. The punch 7 and the forming die 8 can both move. The punch 7 and the forming die 8 move in opposite directions. The punch 7 and the forming die 8 are pulled away from the negative angle structure area of the product 80, so that the product 80 can be demolded smoothly. The strip can be floated smoothly under the action of the mold's floating mechanism so as to enter the next process.
[0020] Optionally, the first slider 2 has a first guide groove 21 on the bottom right side; the first return spring 5 is a nitrogen spring, which is fixedly connected to the lower mold, and the piston rod of the first return spring 5 abuts in the first guide groove 21. The second slider 4 has a second guide groove 42 on the bottom left side; the second return spring 6 is a nitrogen spring, which is fixedly connected to the first slider 2, and the piston rod of the second return spring 6 abuts in the second guide groove 42.
[0021] Optionally, a first guide plate 9 with a cross-section of 7 is fixedly connected to both sides of the first slider 2 on the lower mold. A first protrusion 10 is provided on both sides of the first slider 2 along the length direction. The first protrusion 10 is slidably connected to the first guide plate 9 to ensure the movement accuracy of the first slider 2. A second guide plate 20 with a cross-section of 7 is fixedly connected to both sides of the second slider 4 on the first slider 2. A second protrusion 30 is provided on both sides of the second slider 4 along the length direction. The second protrusion 30 is slidably connected to the second guide plate 20 to ensure the movement accuracy of the second slider 4.
[0022] Furthermore, at least two V-shaped guide rails 40 arranged along the length direction are fixedly connected to the first slider 2 below the second slider 4; a V-shaped slider 50 adapted to the V-shaped guide rails 40 is fixedly connected to the bottom of the second slider 4, and the V-shaped slider 50 is slidably connected to the V-shaped guide rails 40. The use of V-shaped sliders 50 with a V-shaped cross-section working in conjunction with V-shaped guide rails 40 effectively ensures that the V-shaped slider 50 always moves along a predetermined trajectory during movement, reducing wobbling caused by gaps, improving guiding accuracy, and ensuring the machining accuracy of product 80.
[0023] Optionally, a number of self-lubricating sliding plates 60 are fixedly connected to the lower mold below the first slider 2 to achieve low-friction and low-wear relative sliding between the first slider 2 and the lower mold.
[0024] Optionally, the insert 1 has inclined return grooves 13 on both sides; the block 3 has return hooks 70 on both sides. One end of the return hook 70 is fixedly connected to the block 3 by screws, and the other end is slidably connected to the return groove 13. After the mold completes the stamping process, the first slider 2 can be safely returned to the initial position by the return hook 70 and the first return spring 5 to ensure the stamping accuracy.
[0025] It should be understood that all the above embodiments are exemplary and not restrictive. Any modifications, equivalent changes and alterations made by those skilled in the art to the specific embodiments described above under the concept of this utility model shall still fall within the scope of the technical solution of this utility model.
Claims
1. A double action inclined wedge structure of a punch die comprising an upper die and a lower die, characterized by: A cutting tool is fixedly connected to the upper mold. The cutting tool has a first inclined wedge surface and a second inclined wedge surface on its left and right sides at the bottom, respectively. A first slider is slidably connected to the lower mold. The first slider has a first return spring at its bottom and a support block fixedly connected to the first slider below the first inclined wedge surface. The support block has a first inclined mating surface at one end near the first inclined wedge surface. When the cutting tool moves down, it pushes the support block and the first slider to slide to the right on the lower mold. A second slider is slidably connected to the first slider below the second inclined wedge surface. The second slider has a second return spring at its bottom and a second inclined mating surface at one end near the second inclined wedge surface. A punch is fixedly connected to the other end. A forming die opposite to the punch is fixedly connected to the first slider. When the cutting tool moves down, it also pushes the second slider to slide to the left on the first slider, so as to drive the punch to move toward the forming die and perform lateral stamping forming of the product.
2. The double-moving wedge structure of the stamping die according to claim 1, characterized in that: The first slider has a first guide groove on the bottom right side; the first reset spring is a nitrogen spring, which is fixedly connected to the lower mold, and the piston rod of the first reset spring abuts in the first guide groove.
3. The double-moving wedge structure of the stamping die according to claim 1, characterized in that: The second slider has a second guide groove on the bottom left side; the second reset spring is a nitrogen spring, which is fixedly connected to the first slider, and the piston rod of the second reset spring abuts in the second guide groove.
4. The double-moving wedge structure of the stamping die according to claim 1, characterized in that: The lower mold has a first guide plate with a cross-section of 7 fixedly connected to both sides of the first slider. The first slider has a first protrusion along its length on both sides, and the first protrusion is slidably connected to the first guide plate. The first slider has a second guide plate with a cross-section of 7 fixedly connected to both sides of the second slider. The second slider has a second protrusion along its length on both sides, and the second protrusion is slidably connected to the second guide plate.
5. The double-moving wedge structure of the stamping die according to claim 4, characterized in that: At least two V-shaped guide rails arranged along the length direction are fixedly connected to the first slider below the second slider; a V-shaped slider adapted to the V-shaped guide rails is fixedly connected to the bottom of the second slider, and the V-shaped slider is slidably connected to the V-shaped guide rails.
6. The double-moving wedge structure of the stamping die according to claim 1, characterized in that: Several self-lubricating sliding plates are fixedly connected to the lower mold below the first slider.
7. The double-moving wedge structure of the stamping die according to claim 1, characterized in that: The inserter has return grooves on both sides; the abutment has return hooks on both sides, one end of the return hook is fixedly connected to the abutment, and the other end is slidably connected to the return groove.