Bending and bending integrated stamping die
By designing a bending stamping mold, the bend and flange of the core material is achieved by using the combination of the carrier material projection and the forming block, the problem of increasing the mold development cost in the prior art is solved and a more efficient forming process is achieved.
Patent Information
- Application Number
- CN202420288807.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-06
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-02-06
AI Technical Summary
In the prior art, when bending one end of the core material and flanking both sides close to the bend, it is necessary to perform it at different stations, resulting in an increase in mold development costs.
A bending stamping mold is designed. By setting a loading projection on the lower mold base and a forming block on the upper mold base, when the loading projection enters the cavity of the forming block, the forming block and the loading projection form an interconnected bending cavity and a folding cavity to achieve bending and flanking of the core material.
The bending and flanking of the core material can be achieved through one mold, reducing the cost of mold development and saving stations on the assembly line, solving the problem of increasing development costs in the existing technology.
Smart Images
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Abstract
Description
Technical Field
[0001] The present application relates to the field of mold technology, and in particular to a stamping mold with an integrated bending function. Background Art
[0002] Currently, when stamping a bracket product with both bending and flanging shapes, a bending station is usually set on the stamping line to bend one end of the core material and a flanging station is set to flanging the two sides of the core material close to the bending part, so that the core material can be finally formed into a bracket with bending and flanging shapes. However, performing the flanging and bending of the bracket separately will increase the development cost of the mold. Summary of the invention
[0003] The present application provides a stamping die with integrated bending, which can solve the technical problem in the related art that when bending one end of a core material and flanging the two sides near the bending point, the bending and flanging are performed at different workstations respectively, which increases the development cost of the mold.
[0004] In the first aspect, the embodiment of the present application provides a bending-in-one stamping mold, which includes: a lower mold base, the lower mold base has a loading protrusion, the loading protrusion has a supporting surface and a bending surface, the bending surface is connected to the supporting surface, and the bending surface and the supporting surface form a preset angle with each other, the loading protrusion also has a side surface, the side surface connects the bending surface and the supporting surface; an upper mold base, the upper mold base includes a pressing block, the pressing block is used to be pressed on part of the loading protrusion; the upper mold base also includes a forming block, the forming block includes a bending wall and a folding wall, the bending wall and the folding wall form a cavity, when the upper mold base is pressed on the lower mold base, the loading protrusion enters the cavity, and a pressing cavity is formed between the pressing block and the supporting surface, a bending cavity is formed between the bending wall and the bending surface, a folding cavity is formed between the folding wall and the side surface, and the pressing cavity, the bending cavity and the folding cavity are connected to each other.
[0005] In combination with the first aspect, in one embodiment, the inner top wall surface of the cavity is connected to the folded wall via an arc surface.
[0006] In combination with the first aspect, in one embodiment, the lower die seat includes a base, the top surface of the base is fixed with the loading protrusion, the pressing block includes a first pressing block and a second pressing block fixed to the first pressing block, the second pressing block is arranged on the side of the pressing block close to the forming block, and the second pressing block extends into the cavity; the first pressing block has a pressing groove, the pressing groove includes a top wall surface pressed on the supporting surface and a side wall surface pressed on the side surface; the second pressing block includes a pressing surface, the pressing surface is also pressed on the supporting surface, and the pressing surface is connected to the top wall surface.
[0007] In combination with the first aspect, in one embodiment, a side of the forming block close to the pressing block is attached to a side of the first pressing block close to the second pressing block.
[0008] In combination with the first aspect, in one embodiment, a first elastic member is provided on a side of the forming block close to the base.
[0009] In combination with the first aspect, in one embodiment, the forming block is provided with a through hole, the through hole is communicated with the cavity, a material stripping block is passed through the through hole, and a second elastic member is installed on a side of the material stripping block close to the cavity.
[0010] In combination with the first aspect, in one embodiment, a U-shaped positioning groove is provided on the top surface of the forming block, and the U-shaped positioning groove is spaced apart from the through hole.
[0011] In combination with the first aspect, in one embodiment, the lower die base is provided with a plurality of ejection holes, the ejection holes extending from a side of the lower die base away from the pressing block toward a side close to the pressing block, and the ejection holes penetrate the lower die base; and ejection parts are installed in the ejection holes.
[0012] In combination with the first aspect, in one embodiment, the ejector member includes an ejector pin and a third elastic member connected to the ejector pin, and the third elastic member is installed on a side of the ejector pin away from the pressing block.
[0013] In combination with the first aspect, in one implementation, a portion of the pressing block extends into the cavity, and the pressing block is spaced apart from the bending surface.
[0014] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:
[0015] By cooperating the loading protrusion arranged on the lower die base with the forming block arranged on the upper die base, when the loading protrusion enters the cavity of the forming block, the forming block and the loading protrusion jointly form a bending cavity and a folding cavity that are interconnected. With the cooperation of the pressing block, the core material is pressed into the pressing cavity formed by the pressing block and the supporting surface. After the forming block is pressed on the loading protrusion, the bending of the end of the core material and the flanging near the bending point can be completed under the joint action of the bending wall and the folding wall, which solves the technical problem in the related technology that the bending and flanging are performed at different workstations respectively, which increases the development cost of the mold. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 A schematic diagram of the overall structure of the stamping die provided in the embodiment of the present application;
[0018] Figure 2 A schematic cross-sectional view of the stamping die provided in an embodiment of the present application;
[0019] Figure 3 This is a schematic diagram of the structure in which the pressing block provided in an embodiment of the present application is pressed on a base.
[0020] In the figure:
[0021] 1. Loading protrusion; 11. Support surface; 12. Bending surface; 13. Ejection hole;
[0022] 2. Pressing block;
[0023] 3. forming block; 31. bending wall; 32. perforation;
[0024] 4. Base;
[0025] 5. First fold;
[0026] 6. Core material. DETAILED DESCRIPTION
[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0028] The embodiment of the present application provides a stamping die with integrated bending, which can solve the technical problem in the related art that when bending one end of the core material and flanging the two sides near the bending point, the bending and flanging are performed at different workstations respectively, which increases the development cost of the mold.
[0029] See also Figure 1As shown, a bending-integrated stamping die provided in an embodiment of the present application may include: a lower die seat, which can be fixed on a base 4 of a punching machine, the lower die seat having a loading protrusion 1, the loading protrusion 1 having a supporting surface 11 and a bending surface 12, the supporting surface 11 being a side for supporting a core material 6, the bending surface 12 being connected to the supporting surface 11, and the bending surface 12 and the supporting surface 11 are at a preset angle to each other, and the preset angle is determined according to the angle of the formed bracket, the loading protrusion 1 also having a side surface, the side surface connecting the bending surface 12 and the supporting surface 11; an upper die seat, the upper die seat including a pressing block 2, the pressing block 2 being used to be pressed on a portion of the loading protrusion 1, and during the stamping operation, the core material 6 is pressed between the pressing block 2 and the loading protrusion 1.
[0030] In addition, the upper die seat also includes a forming block 3, and the forming block 3 includes a bending wall 31 and a folding wall. The bending wall 31 and the folding wall enclose a cavity. The folding wall can be arranged on the opposite sides of the bending wall 31, so that both sides of the finally formed bracket are folded. The folding wall can also be arranged on one side of the bending wall 31, and only one side of the bracket is folded. When the upper die seat is pressed on the lower die seat, the loading protrusion 1 enters the cavity, and a cavity is formed between the pressing block 2 and the supporting surface 11. A pressing cavity is formed, a bending cavity is formed between the pressing wall 31 and the bending surface 12, and a folding cavity is formed between the folding wall and the side surface. That is, in the cavity of the forming block 3, after the loading protrusion 1 extends into the cavity, the various surfaces of the loading protrusion 1 respectively cooperate with the pressing wall 31 and the folding wall that surround the cavity, and together form various cavities required for forming the bracket. The pressing cavity, the bending cavity and the folding cavity are connected to each other. The pressing cavity, the bending cavity and the folding cavity are connected to each other, so that the final pressed bracket is integrated.
[0031] In the embodiment of the present application, the material-carrying protrusion 1 arranged on the lower die seat cooperates with the forming block 3 arranged on the upper die seat, so that when the material-carrying protrusion 1 enters the cavity of the forming block 3, the forming block 3 and the material-carrying protrusion 1 jointly form a bending cavity and a folding cavity that are interconnected, and the pressing cavity is also connected to the bending cavity and the folding cavity. With the cooperation of the pressing block 2, the core material 6 is pressed into the pressing cavity formed by the pressing block 2 and the supporting surface 11. After the forming block 3 is pressed onto the material-carrying protrusion 1, the bending of the end of the core material 6 can be completed under the joint action of the bending wall and the folding wall, and by using the pressing cavity to press the part of the core material 6. In the embodiment, the angle between the supporting surface 11 and the bending surface 12 is 90°, and the plane where the pressing cavity is located and the plane where the bending cavity is located also have an angle of 90°, so that the angle of the bending in the product support can be determined, and the core material 6 can be bent and flanging through one mold through the cooperation of the loading protrusion 1 and the forming block 3. This arrangement can reduce the development cost of the mold and save workstations on the assembly line, and solves the technical problem that the bending and flanging are performed at different workstations in the related technology, which will increase the development cost of the mold.
[0032] Preferably, the inner top wall surface of the cavity is connected to the folded wall by an arcuate surface. At this time, the supporting surface 11 and the bending surface 12 in the loading protrusion 1 are also connected by an arcuate surface. This arrangement can make the bending part of the final formed product bracket an arcuate bend, so that the bracket can enhance safety when it is finally used.
[0033] In some optional embodiments, the lower mold base includes a base 4, and the loading protrusion 1 is fixed to the top surface of the base 4. Preferably, the supporting surface 11 of the loading protrusion 1 is an inclined surface, that is, the distance between the end of the supporting surface 11 away from the bending surface 12 and the end of the supporting surface 11 close to the bending surface 12 and the top surface of the base 4 are different. In this embodiment, the distance between the end of the supporting surface 11 away from the bending surface 12 and the top surface of the base 4 is smaller than the distance between the end of the supporting surface 11 close to the bending surface 12 and the top surface of the base 4. Since the angle between the supporting surface 11 and the bending surface 12 is 90°, the bending surface 12 and the bottom surface are not close to each other. The angle between the top surfaces of the seat 4 is an acute angle. During stamping, when the forming block 3 moves from top to bottom, since the angle between the bending surface 12 and the top surface of the base 4 is an acute angle, the bottom surface of the forming block 3 and the bending surface 12 are obtuse angles. When the core material 6 is pressed into a bracket, both sides close to the bending surface 12 need to be folded. Among the core materials 6, the core material 6 close to one end of the bending surface 12 is regarded as the first material, and part of the first material is in contact with the bending surface 12, and both sides of the first material are folded toward the side of the material-carrying protrusion 1. The angle between the bending surface 12 and the top surface of the base 4 is set to an acute angle, so that when the core material 6 is placed on the material-carrying protrusion 1, The forming block 3 can press the first material toward the side of the material-carrying protrusion 1 from top to bottom. The pressing block 2 includes a first pressing block and a second pressing block fixed to the first pressing block. The second pressing block is arranged on the side of the pressing block 2 close to the forming block 3, and the second pressing block extends into the cavity, that is, the second pressing block is close to the side of the bending surface 12, so that the pressing block 2 can press a larger area of the core material 6 as much as possible during operation, further reducing the possibility of warping of the core material 6 during stamping; the first pressing block has a pressing groove, and the pressing groove includes a top wall surface pressed on the support surface 11 and a side wall surface pressed on the side surface, that is, in this embodiment In the example, before the core material 6 is placed on the support surface 11, both sides of the core material 6 are folded once at the end away from the bending wall. The pressing groove is set in the first pressing block so that when the first pressing block presses the core material 6, the two sides of the core material 6 that have been preliminarily folded are also pressed, thereby enhancing the stability of the core material 6 on the material-carrying protrusion 1; the second pressing block includes a pressing surface, which is also pressed on the support surface 11, and the pressing surface is connected to the top wall surface. Under the joint action of the top wall surface and the pressing surface, after the core material 6 is placed on the support surface 11, as large an area as possible is pressed, thereby enhancing the stability of the core material 6 during the stamping process.
[0034] In some optional embodiments, a side of the forming block 3 close to the pressing block 2 is attached to a side of the first pressing block close to the second pressing block. In this embodiment, the second pressing block can be used to cooperate with the supporting surface 11 to press the core material 6. The second pressing block can be located only on the top surface of the loading protrusion 1, and the side surface of the loading protrusion 1 can be spaced apart from the second pressing block. In this embodiment, both sides of the product support have continuous folded edges, and the first pressing block has a side wall surface that cooperates with the side surface of the loading protrusion 1. One side of the forming block 3 is attached to the first pressing block, so that part of the side surface of the folded wall of the forming block 3 and the side wall surface can jointly press the continuous flanges on both sides of the core material 6, so that the continuous flanges on both sides of the core material 6 can be almost completely pressed under the joint action of the pressing block 2 and the forming block 3. Preferably, before the core material 6 is placed on the supporting surface 11, see Figure 3 As shown, at the end away from the bending wall, both sides of the core material 6 have completed a folding. At this time, the folding can be regarded as the first fold 5. The length of the first fold 5 along the length direction of the loading protrusion 1 is greater than the length of the side wall of the first pressing block along the length direction of the loading protrusion 1. This setting method can make the first fold 5 incompletely pressed by the side wall. When the forming block 3 presses the core material 6, part of the side surface of the folded wall is guided by the first fold 5 that is not pressed by the side wall. When the core material 6 is stamped, the warping on both sides can be effectively reduced, thereby enhancing the qualified rate of the product during stamping.
[0035] In some optional embodiments, a first elastic member is provided on one side of the forming block 3 close to the base 4. The first elastic member may be a spring, which can absorb impact and vibration during stamping and improve the fatigue resistance of the stamping die.
[0036] See also Figure 2 As shown, in some optional embodiments, the forming block 3 is provided with a through hole 32, the through hole 32 is connected to the cavity, and a material return block is passed through the through hole 32, and the surrounding side of the through hole 32 may have a side wall, wherein the side wall on one side protrudes out a protrusion toward the axis of the through hole 32, and the material return block can be placed on the protrusion to prevent it from falling out of the through hole 32, and a second elastic member is installed on the side of the material return block close to the cavity, and the second elastic member can also be a spring, which effectively reduces the damage of the support by the material return block during the material return process.
[0037] In some optional embodiments, a U-shaped positioning groove is provided on the top surface of the forming block 3, and the U-shaped positioning groove is spaced apart from the perforation 32. The spacing can effectively avoid the mutual influence between the U-shaped positioning groove and the perforation 32. Bolt holes can be provided at the positions of multiple corners of the forming block 3. The forming block 3 is fixed to the output end of the punching machine by bolts penetrated through the bolt holes. The accuracy of bolt fixing is usually low. In this embodiment, a U-shaped positioning groove is provided on the top surface of the forming block 3, and a U-shaped positioning block matching the U-shaped positioning groove is provided at the output end of the punching machine. The U-shaped positioning block and the U-shaped positioning groove realize more accurate positioning of the forming block 3. Preferably, a plurality of U-shaped positioning grooves are provided, and the plurality of U-shaped positioning grooves are spaced apart from the perforation 32, and the plurality of U-shaped positioning grooves are symmetrically provided on the top surface of the forming block 3 to further more accurately position.
[0038] In some optional embodiments, the lower die base is provided with a plurality of ejection holes 13, and the ejection holes 13 extend from the side of the lower die base away from the pressing block 2 toward the side close to the pressing block 2, and the ejection holes 13 penetrate the lower die base, that is, there are a plurality of ejection holes 13 opened from top to bottom in the lower die base along the height direction; ejection parts are installed in the ejection holes 13, and after the core material 6 is punched into a bracket, it can be ejected out of the loading protrusion 1 by the ejection parts, so that the stamped bracket can be directly ejected and then automatically moved by other mobile equipment, leaving the loading protrusion 1 empty for the next core material 6 to be placed thereon and then punched, thereby reducing manual operation and speeding up the stamping process.
[0039] In some optional embodiments, the ejector includes an ejector pin and a third elastic member connected to the ejector pin. In this embodiment, the third elastic member is also configured as a spring. The third elastic member is installed on the side of the ejector pin away from the pressing block 2, that is, the ejector pin is fixed on the top surface of the spring. When the pressing block 2 is pressed on the core material 6 and the loading protrusion 1, the spring is compressed. When the bracket is stamped, the pressing block 2 is lifted. At this time, the compressed spring has a restoring force, which can push the ejector pin upward to keep the bracket away from the loading protrusion 1. In some other embodiments, the ejector can also be configured as other structures with ejection performance.
[0040] In some optional embodiments, part of the pressing block 2 extends into the cavity, and the pressing block 2 is spaced apart from the bending surface 12, that is, the pressing block 2 presses the core material 6 as close to the bending surface 12 as possible, which can effectively prevent the core material 6 from warping during the stamping process, and the pressing block 2 is spaced apart from the bending surface 12 to reduce the influence of the pressing block 2 on the stamping result during the stamping process.
[0041] The use process of the stamping die is as follows: a core material 6 having a first fold 5 at one end is placed on the loading protrusion 1, and the pressing block 2 is pressed downward so that the pressing block 2 limits and fixes the core material 6. Thereafter, the forming block 3 is pressed downward so that the core material 6 is stamped into a bracket. After the bracket is formed, the forming block 3 and the pressing block 2 are lifted. During the process of lifting the forming block 3, the pressing block is used to press the material return block and press the material return block into the perforation 32 so that the material return block can assist in material return. After the pressing block 2 is away from the bracket, the ejector pin lifts the bracket through the spring to move the bracket away from the loading protrusion 1.
[0042] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0043] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0044] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.
Claims
1. A stamping die with bending integration, characterized in that: It includes: A lower die base, the lower die base having a material loading protrusion (1), the material loading protrusion (1) having a supporting surface (11) and a bending surface (12), the bending surface (12) being connected to the supporting surface (11), and the bending surface (12) and the supporting surface (11) forming a preset angle with each other, the material loading protrusion (1) also having a side surface, the side surface connecting the bending surface (12) and the supporting surface (11); An upper die seat, the upper die seat comprising a material pressing block (2), the material pressing block (2) being used for pressing on a portion of the material carrying protrusion (1); The upper die seat also includes a forming block (3), and the forming block (3) includes a bending wall (31) and a folding wall. The bending wall (31) and the folding wall form a cavity. When the upper die seat is pressed onto the lower die seat, the material loading protrusion (1) enters the cavity, and a material pressing cavity is formed between the material pressing block (2) and the supporting surface (11), a bending cavity is formed between the bending wall (31) and the bending surface (12), and a folding cavity is formed between the folding wall and the side surface. The material pressing cavity, the bending cavity and the folding cavity are connected to each other.
2. The bending-integrated stamping die according to claim 1, characterized in that: The inner top wall surface of the cavity is connected to the folded wall through an arc surface.
3. The bending-integrated stamping die according to claim 1, characterized in that: The lower die seat comprises a base (4), the top surface of the base (4) is fixed with the material loading protrusion (1), the pressing block (2) comprises a first pressing block and a second pressing block fixed to the first pressing block, the second pressing block is arranged on a side of the pressing block (2) close to the forming block (3), and the second pressing block extends into the cavity; The first pressing block has a pressing groove, and the pressing groove includes a top wall surface pressed on the supporting surface (11) and a side wall surface pressed on the side surface; The second pressing block comprises a pressing surface, which is also pressed on the supporting surface (11) and connected to the top wall surface.
4. The bending-integrated stamping die according to claim 3, characterized in that: A side of the forming block (3) close to the pressing block (2) is in contact with a side of the first pressing block close to the second pressing block.
5. The bending-integrated stamping die according to claim 3, characterized in that: A first elastic member is provided on one side of the forming block (3) close to the base (4).
6. The bending-integrated stamping die according to claim 1, characterized in that: The forming block (3) is provided with a through hole (32), the through hole (32) is communicated with the cavity, a material stripping block is inserted into the through hole (32), and a second elastic member is installed on a side of the material stripping block close to the cavity.
7. The bending-integrated stamping die according to claim 6, characterized in that: A U-shaped positioning groove is provided on the top surface of the forming block (3), and the U-shaped positioning groove and the through hole (32) are arranged at an interval.
8. The bending-integrated stamping die according to claim 1, characterized in that: The lower die base is provided with a plurality of ejection holes (13), the ejection holes (13) extending from a side of the lower die base away from the pressing block (2) toward a side close to the pressing block (2), and the ejection holes (13) penetrate the lower die base; The ejection holes (13) are each provided with an ejection piece.
9. The bending-integrated stamping die according to claim 8, characterized in that: The ejector member comprises an ejector pin and a third elastic member connected to the ejector pin, and the third elastic member is installed on a side of the ejector pin away from the pressing block (2).
10. The bending-integrated stamping die according to claim 1, characterized in that: A portion of the pressing block (2) extends into the cavity, and the pressing block (2) and the bending surface (12) are spaced apart.