Punching die

Abstract

This disclosure relates to a stamping die, comprising: a punch for supporting a part to be formed; a flanging block for pressing against the punch along the stamping direction to form a flanging on the part to be formed; and a support block for supporting the flanging on the opposite side of the flanging block. The support block is slidably mounted on the punch along the stamping direction so that its support position can change with the stamping deformation of the flanging. By providing a support block that can slide along the stamping direction and is located on the opposite side of the flanging block on the punch, the support position of the support block on the flanging can be dynamically adjusted along the stamping direction during the stamping process of forming the flanging on the part to be formed, thereby effectively limiting the deformation path of the material at the contour of the part to be formed, and thus avoiding problems such as material accumulation, wrinkles, and cracking at the flanging corner.

Description

Technical Field

[0001] This disclosure relates to the field of stamping technology, and more particularly to stamping dies. Background Technology

[0002] In related technologies, when sheet metal flows through complex deformation areas such as flanges and corners, rigid supports create mechanical obstacles, preventing the material from freely extending. This constraint causes stress concentration at corners, resulting in increased thickness in areas where material flow is obstructed, while other areas may experience excessive thinning. This problem is particularly pronounced when forming high-strength materials or materials with large curvatures, ultimately leading to significant material buildup and wrinkles at the corners, severely impacting the dimensional accuracy and surface quality of the parts. Utility Model Content

[0003] To overcome the problems existing in related technologies, this disclosure provides a stamping die.

[0004] According to a first aspect of the present disclosure, a stamping die is provided, comprising:

[0005] A punch is used to support the part to be formed.

[0006] A flanging block, used to press against the punch along the stamping direction to form a flanging on the part to be formed; and

[0007] A support block is used to support the flange on the opposite side of the flange block. The support block is slidably mounted on the punch along the stamping direction so that the support position can be changed as the flange is stamped and deformed.

[0008] By setting a support block on the punch that can slide along the stamping direction and is located on the opposite side of the flanging block, the support position of the support block on the flanging can be dynamically adjusted along the stamping direction during the stamping process of forming the flanging of the part to be formed. This effectively limits the deformation path of the material at the contour of the part to be formed, thereby avoiding problems such as material accumulation, wrinkles and cracks at the flanging corner.

[0009] In one possible implementation, the punch has two support surfaces arranged at an angle, and the support block is positioned at the included angle of the two support surfaces. The bending curvature of the two support surfaces matches the bending curvature of the part to be formed. This not only prevents material accumulation at the included angle but also improves the forming accuracy of the flange.

[0010] In one possible implementation, the stamping die includes a drive component mounted on the punch, the output end of which is connected to the support block. The drive component drives the support block to reciprocate relative to the punch along the stamping direction to adjust the support position of the support block. This allows the support block to automatically adjust its support position according to the forming progress of the flange, requiring no manual intervention throughout the process. This ensures the stability of the support block while improving support accuracy.

[0011] In one possible implementation, the drive member is configured to have an elastic force capable of driving the support block to reciprocate. When the flange block pushes the part to be formed to deform, the drive member can provide a reverse constraint, so that the support block can both follow the deformation of the flange and provide stable support for the flange at all times.

[0012] In one possible implementation, the stamping die includes a base detachably mounted on the punch, and the drive member is connected between the base and the support block. This achieves a detachable connection between the support block and the drive member and the punch, maintaining the integrity and strength of the punch, providing a stable mounting base for the support block, and ensuring the stability of the drive member's actuation of the support block.

[0013] In one possible implementation, the punch has a receiving groove, and the base is at least partially embedded in the receiving groove. This improves the overall performance between the base and the punch while further ensuring the reliability of the connection between them.

[0014] In one possible implementation, the support block has a slot on the side near the base, and a strip is provided on the base. The slot matches the shape of the strip, and the strip is slidably disposed in the slot along the stamping direction. This effectively ensures the reliability of the connection between the support block and the base, preventing the support block from failing to support the flange.

[0015] In one possible implementation, the drive component includes two connecting rods capable of extending and retracting along the stamping direction, with an elastic element connecting the two connecting rods. The opposite ends of the two connecting rods are respectively fixedly connected to the support block and the base. This ensures both accurate transmission of the supporting force and reliable support.

[0016] In one possible implementation, a groove extending along the stamping direction is formed on the punch, and a slide bar that slides with the groove is provided on the side of the support block facing the groove. This further defines the movement path of the support block and effectively improves the overall effect and connection strength between the punch and the support block.

[0017] In one possible implementation, a recess is formed on the end face of the flanging block for fitting the part to be formed and transmitting the stamping force. The inner contour of the recess matches the outer contour of the formed part. While ensuring the quality of the flanging and corner wrapping of the part to be formed, this method achieves flanging and corner wrapping in a single process, effectively reducing process steps and the number of molds, significantly reducing mold manufacturing costs, and improving production efficiency.

[0018] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: By providing a support block that can slide along the stamping direction and is located on the opposite side of the flange block on the punch, the support position of the support block on the flange can be dynamically adjusted along the stamping direction during the stamping process of forming the flange of the part to be formed, so as to effectively limit the deformation path of the material at the contour of the part to be formed, thereby avoiding problems such as material accumulation, wrinkles and cracks at the flange corner.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0021] Figure 1 This is an exploded view of a stamping die according to an exemplary embodiment.

[0022] Figure 2 This is a partial structural schematic diagram of a stamping die according to an exemplary embodiment.

[0023] Figure 3 This is a partial structural schematic diagram of a stamping die according to an exemplary embodiment.

[0024] Figure 4 This is a schematic diagram of a punch according to an exemplary embodiment.

[0025] Figure 5 This is a schematic diagram of a tray according to an exemplary embodiment.

[0026] Figure 6 This is a schematic diagram illustrating the assembly of a molded part and a stamping die according to an exemplary embodiment.

[0027] Explanation of reference numerals in the attached figures

[0028] 1-Punch; 11-Support surface; 12-Slide groove; 13-Receiving groove; 2-Support block; 21-Slot; 22-Slide bar; 3-Drive component; 31-Connecting rod; 4-Base; 41-Insertion bar; 42-Screw hole; 5-Flanged block; 51-Recessed part; 6-Screw; 71-Formed part; 72-Flanged. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0030] Reference Figure 1 This disclosure provides a stamping die, which may include a punch 1, a flanging block 5, and a support block 2. The punch 1 can be used to support the part to be formed, providing a stable reference surface for the part and preventing displacement of the part during stamping. In one embodiment, the part to be formed can rely on its own weight or other slight external force to adhere to the punch 1, thereby ensuring the stability of the part during the stamping process. The flanging block 5 can be used along the stamping direction... Figure 6 The part to be formed is pressed against the punch 1 in the direction of the arrow shown, so that a flange 72 is formed on the part to be formed. Specifically, the flange block 5 can apply force to the part to be formed through the stamping motion, thereby causing the edge of the part to be formed to deform along the preset contour, thus forming the flange 72. The support block 2 can be used to support the flange 72 on the opposite side of the flange block 5 to prevent the flange 72 from deforming outside the preset contour due to force displacement of the part to be formed. Figure 2 As shown, the support block 2 can be slidably mounted on the punch 1 along the stamping direction so that the support position of the flange 72 can be changed as the flange 72 is stamped and deformed. This design can effectively ensure that the support block 2 can always effectively constrain the material forming the flange 72 position throughout the entire forming process, and avoid wrinkles or material accumulation at the flange 72 corner of the part to be formed after being pressed.

[0031] By using the above technical solution, by setting a support block 2 on the punch 1 that can slide along the stamping direction and is located on the opposite side of the flange block 5, the support position of the support block 2 on the flange 72 can be dynamically adjusted along the stamping direction during the stamping process of forming the flange 72 of the part to be formed, so as to effectively limit the degree and direction of material deformation at the contour of the part to be formed, thereby avoiding problems such as material accumulation, wrinkles and cracks at the corner of the flange 72.

[0032] Reference Figure 6The punch 1 can have two support surfaces 11 arranged at an angle, and the bending curvature of the two support surfaces 11 matches the bending curvature of the part to be formed. This ensures that the punching force of the part to be formed during the flanging process 72 is evenly distributed, avoiding local stress concentration that could lead to local thinning or cracking of the part to be formed. It also effectively improves the dimensional accuracy and surface quality of the part to be formed. Figure 4 and Figure 6 As shown, the support block 2 can be set at the angle between the two support surfaces 11 so that the support block 2 can support the flange 72 at the angle of the part to be formed. This can prevent material accumulation at the angle and improve the forming accuracy of the flange 72.

[0033] Reference Figure 1 and Figure 3 The stamping die may include a drive component 3 mounted on the punch 1. The output end of the drive component 3 may be connected to the support block 2 to drive the support block 2 to reciprocate relative to the punch 1 along the stamping direction, thereby adjusting the support position of the support block 2. This allows the support block 2 to automatically adjust its support position according to the forming progress of the flange 72, without the need for manual intervention throughout the process. This ensures the support stability of the support block 2 while improving the support accuracy and position adjustment efficiency.

[0034] In the embodiments provided in this disclosure, the driving member 3 can be configured to have an elastic force capable of driving the support block 2 to reciprocate. In this way, under the interaction of the elastic force of the driving member 3 and the punching force of the flange block 5, when the flange block 5 pushes the part to be formed to deform, the driving member 3 can provide a reverse constraint, so that the support block 2 can both follow the deformation of the flange 72 and provide stable support for the flange 72 at all times. It should be noted that, in this disclosure, the elastic force of the driving member 3, on the one hand, can effectively prevent the support block 2 from being too stiff in supporting the flange 72 due to excessive elasticity of the driving member 3, requiring the flange block 5 to overcome the elastic force to deform the part to be formed, thereby preventing material accumulation caused by the deformation of the part to be formed; on the other hand, it can also effectively prevent the support block 2 from being instantly pushed back when the flange block 5 applies punching force, thus losing its supporting function for the flange 72.

[0035] Reference Figures 1-3The stamping die may include a base 4 detachably mounted on the punch 1. A drive component 3 can be connected between the base 4 and the support block 2. This provides auxiliary support for the support block 2 and the drive component 3 without interfering with the main structure of the punch 1, maintaining the integrity and structural strength of the punch 1, providing a stable mounting base for the support block 2, and ensuring the stability of the drive component 3's driving of the support block 2. The detachable connection between the base 4 and the punch 1 also allows for the detachable connection between the drive component 3 and the support block 2 and the punch 1, facilitating component maintenance and replacement without affecting the punch's main structure. In one embodiment, as... Figure 1 The stamping die may include a screw 6, and a screw hole 42 may be provided on the base 4 for threaded connection with the screw 6. A socket (not shown in the figure) may be provided on the punch 1 at the position corresponding to the screw hole 42. The screw 6 can extend into the screw hole 42 and pass through the base 4 and be threadedly connected to the base 4 before extending into the socket, thereby realizing the detachable connection between the base 4 and the punch 1.

[0036] Reference Figure 1 The punch 1 may have a receiving groove 13, and at least part of the base 4 may be embedded in the receiving groove 13. While improving the overall effect between the base 4 and the punch 1, it can further ensure the reliability of the connection between the base 4 and the punch 1.

[0037] Reference Figure 1 , Figure 4 as well as Figure 5 A slot 21 can be provided on the side of the support block 2 near the base 4. A strip 41 can be provided on the base 4 at the position corresponding to the slot 21. The slot 21 and the strip 41 can be matched in shape, and the strip 41 can be slidably disposed in the slot 21 along the stamping direction. When the drive unit 3 drives the support block 2 to move, the cooperation between the slot 21 and the strip 41 can further limit the movement path of the support block 2, and effectively ensure the reliability of the connection between the support block 2 and the base 4, and avoid the failure of the support block 2 to support the flange 72.

[0038] Reference Figure 1The driving component 3 includes two connecting rods 31 that are telescopically connected along the stamping direction to adjust their overall length. In one embodiment, the two connecting rods 31 can be constructed as tubular structures with one open end. The openings of the two tubular structures can be arranged opposite each other and can be inserted into each other along the stamping direction. An elastic element, such as a compression spring, can be connected between the bottoms of the tubular structures, thereby enabling the two connecting rods 31 to elastically interlock. By reciprocating and extending, and with the elastic force of the elastic element, the two connecting rods 31 can better adapt to different stamping pressure requirements. The opposite ends of the two connecting rods 31 are fixedly connected to the support block 2 and the base 4, respectively. In one embodiment, the two connecting rods 31 can be coaxially arranged. When the connecting rods 31 are constructed as the tubular structures mentioned above, the blind ends of the tubular structures opposite to the open ends can be connected to the support block 2 and the base 4, respectively, ensuring the accurate transmission of support force while ensuring the reliability of the support.

[0039] Reference Figure 1 , Figure 4 as well as Figure 5 The punch 1 can be formed with a groove 12 extending along the stamping direction. The side of the support block 2 facing the groove 12 is provided with a slide bar 22 that slides and engages with the groove 12. The engagement of the groove 12 and the slide bar 22 can further limit the movement path of the support block 2 and effectively improve the overall effect and connection strength between the punch 1 and the support block 2.

[0040] like Figure 1 As shown, a recess 51 for fitting the part to be formed and transmitting the stamping force can be formed on the end face of the flange block 5. The inner contour structure of the recess 51 can match the outer contour structure of the formed part 71. The recess 51 can have multiple working surfaces. In one embodiment, when the punch 1 has the two support surfaces 11 mentioned above, the recess 51 can have two working surfaces. The bending arc between the two working surfaces can match the complete arc of the two support surfaces 11. In this way, when the flange block 5 applies stamping force to the part to be formed, the two working surfaces of the recess 51 can apply force to the two surfaces of the part to be formed at the same time. With this design, while ensuring the quality of the flange 72 corner of the part to be formed, the flange 72 corner can be completed in a single process, effectively reducing the process steps and the number of molds, significantly reducing the mold manufacturing cost, and improving production efficiency.

[0041] In the above detailed description, reference has been made to the accompanying drawings, which illustrate specific aspects of this disclosure by way of illustration. In this regard, terms indicating direction or positional relationship, such as “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential,” are used with reference to the orientation of the described figures. Since components of the described device can be positioned in multiple different orientations, directional terms are used for illustrative purposes and not for limitation. It should be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concept of this disclosure. Therefore, the following detailed description should not be considered limiting.

[0042] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other. As used herein, the term “and / or” includes any one of the relevant listed items and any combination of any two or more; similarly, “at least one of…” includes any one of the relevant listed items and any combination of any two or more.

[0043] It should be understood that, unless otherwise expressly specified and limited, the terms "joining," "attaching," "installing," "connecting," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein based on the specific circumstances.

[0044] Furthermore, the term "above" as used herein with respect to components, elements, or material layers formed or located "above" a surface may be used to indicate that the component, element, or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements, or layers are arranged between the surface and the component, element, or material layer. However, the term "above" as used with respect to components, elements, or material layers formed or located "above" a surface may also optionally have a specific meaning: that the component, element, or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, for example, in direct contact with the surface.

[0045] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. 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 at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] It should be understood that spatial relative terms, such as “above,” “upper,” “below,” and “lower,” are used herein to describe the relationship between one element and another shown in the figures. In addition to the orientation depicted in the figures, these spatial relative terms are also intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as “above” or “upper” relative to another element would be “below” or “lower” relative to that other element. Thus, depending on the spatial orientation of the device, the term “above” encompasses both above and below orientations. Devices may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0047] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0048] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0049] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0050] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A stamping die, characterized in that, include: A punch is used to support the part to be formed. A flange block is used to press the punch along the stamping direction to form a flange on the part to be formed. as well as A support block is used to support the flange on the opposite side of the flange block. The support block is slidably mounted on the punch along the stamping direction so that the support position can be changed as the flange is stamped and deformed.

2. The stamping die according to claim 1, characterized in that, The punch has two support surfaces arranged at an angle, and the support block is located at the included angle of the two support surfaces. The bending curvature of the two support surfaces matches the bending curvature of the part to be formed.

3. The stamping die according to claim 1, characterized in that, The stamping die includes a drive unit mounted on the punch. The output end of the drive unit is connected to the support block and is used to drive the support block to reciprocate relative to the punch along the stamping direction to adjust the support position of the support block.

4. The stamping die according to claim 3, characterized in that, The drive element is configured to have an elastic force capable of driving the block to reciprocate.

5. The stamping die according to claim 3, characterized in that, The stamping die includes a base detachably mounted on the punch, and the drive element is connected between the base and the support block.

6. The stamping die according to claim 5, characterized in that, The punch has a receiving groove, and the base is at least partially embedded in the receiving groove.

7. The stamping die according to claim 5, characterized in that, The support block has a slot on the side near the base, and the base has an insert. The slot and the insert are shaped to match, and the insert is slidably disposed in the slot along the stamping direction.

8. The stamping die according to claim 5, characterized in that, The driving component includes two connecting rods that can extend and retract along the stamping direction, and an elastic element is connected between the two connecting rods. The opposite ends of the two connecting rods are respectively fixedly connected to the support block and the base.

9. The stamping die according to claim 1, characterized in that, A groove extending along the stamping direction is formed on the punch, and a slide bar that slides in cooperation with the groove is provided on the side of the support block facing the groove.

10. The stamping die according to claim 1, characterized in that, The end face of the flange block has a recessed portion for fitting the part to be formed and transmitting the stamping force, and the inner contour structure of the recessed portion matches the outer contour structure of the formed part.

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