Punching die
By designing the inclined cooperation of the support component and the slider in the stamping die, the problem of traditional dies being unable to achieve large-angle bending is solved, enabling workpieces to be bent at larger angles and improving the processing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN CONNECTOR TECH
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional stamping dies are difficult to achieve large-angle bending, especially when the bending angle exceeds 90 degrees, and cannot meet the bending requirements of the workpiece.
A stamping die has been designed, including a first die assembly and a second die assembly. Utilizing the cooperation of a support member and a slider, and by tilting the side-pushing direction relative to the die-closing direction, a large-angle bending of the workpiece can be achieved. The support member is elastically movable, and the slider, driven by a wedge, moves along the side-pushing direction, pushing the part of the workpiece to be bent against the tilted reference surface, thus achieving a larger bending angle.
It enables workpieces to be bent at larger angles, meets the shape requirements of workpieces, and improves the processing flexibility and precision of stamping dies.
Smart Images
Figure CN120662722B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of mold technology, and in particular to a stamping die. Background Technology
[0002] A stamping die is a commonly used mold that uses the relative movement of an upper and lower die to cause plastic deformation of a material through pressure. Traditional stamping dies can be used to bend products. For example, the lower die is designed with a cavity, and the upper die presses down to push a specific area of the flat material into the cavity, thereby achieving bending of a specific part of the product.
[0003] However, when large-angle bending is required, such as bending angles exceeding 90 degrees, it is difficult to achieve the required bending angle when the upper die presses down. Summary of the Invention
[0004] Therefore, it is necessary to provide a stamping die that addresses the problem of traditional stamping dies being unable to achieve large-angle bending.
[0005] This application provides a stamping die, which includes a first die assembly and a second die assembly. The first die assembly includes a first die base and a first wedge, the first wedge being connected to the first die base. The second die assembly includes a second die base, a support member, and a first slider. The support member is elastically and movably inserted through the second die base along the die-closing direction. The first slider is movably embedded in the second die base along the lateral pushing direction and is spaced apart from the support member along the lateral pushing direction. The support member has a support surface and a reference surface. The support surface faces the first die assembly, and the reference surface is located on the side closer to the first slider in the lateral pushing direction. The reference surface is inclined relative to the support surface, and the lateral pushing direction intersects the die-closing direction. When the first die assembly and the second die assembly are closed, the support surface and the first die assembly clamp the workpiece along the die-closing direction. The first slider is driven by the first wedge to move along the lateral pushing direction to push the part of the workpiece to be folded against the reference surface.
[0006] In one embodiment, the second mold assembly includes a first elastic member that elastically abuts between the second mold base and the support member, and the first elastic member elastically compresses when the support member is abutted by the first mold assembly.
[0007] In one embodiment, the second mold assembly further includes a template for contacting the first mold assembly during mold closing, the support member being movably inserted through the template, the first slider being movably embedded in the template along the lateral pushing direction, and one end of the first elastic member abutting against the second mold base, and the other end being inserted through the template and abutting against the support member.
[0008] In one embodiment, the first slider includes a main body and a side pusher portion disposed on the side of the main body near the support member. The side pusher portion is used to abut against the workpiece and bend the workpiece in conjunction with the reference surface. At least a portion of the first slider is hollowed out along the mold closing direction on the side pusher portion away from the first mold assembly.
[0009] In one embodiment, the region of the main body away from the side push portion has a side push surface facing the first module assembly, and the side push surface gradually flips toward the first module assembly in a direction close to the support member along the side push direction.
[0010] In one embodiment, the second mold assembly further includes a template for contacting the first mold assembly during mold closing. The template has a receiving cavity, which includes a first cavity and a second cavity that are in communication with each other. The support member is disposed in the first cavity, and the first slider is disposed in the second cavity.
[0011] The second module assembly further includes a second elastic element that extends along the lateral thrust direction and connects the template to the first slider. The second elastic element is compressed when the first slider moves toward the support member.
[0012] In one embodiment, the first mold assembly further includes a second wedge block connected to the first mold base. The second mold assembly also includes a second slider movably embedded in the second mold base along the lateral pushing direction. The side of the second slider facing the first mold assembly has a receiving groove. When the first mold assembly and the second mold assembly are molded together, the bottom wall of the receiving groove and the first mold assembly are spaced apart to form a molding cavity. The second slider is driven by the second wedge block to move along the lateral pushing direction to push the workpiece, causing the workpiece to fold and be received in the molding cavity. The first wedge block, the support member, and the first slider form a first folding group, and the second wedge block and the second slider form a second folding group. The second folding group is located downstream of the first folding group.
[0013] In one embodiment, the stamping die includes multiple bending groups, each bending group including a punch and a die, wherein one of the punch and the die is disposed on a first die base and the other is disposed on a second die base, the die has a groove, and the punch is aligned with the groove along the die closing direction.
[0014] In one embodiment, the first mold assembly includes a first die cavity disposed on the first mold base, the first die cavity having a first groove; the second mold assembly includes a first punch and a supporting portion, the first punch being disposed on the second mold base and aligned with the first groove along the mold closing direction; the supporting portion covering at least a portion of the area outside the first punch; the supporting portion being elastically movably disposed on the second mold base along the mold closing direction; the supporting portion and the first mold assembly jointly supporting the workpiece; the first die cavity, the first punch, and the supporting portion constitute one of the bending groups.
[0015] In one embodiment, the first mold assembly further includes a stripper plate connected to the first mold base and elastically movable relative to the first mold base along the mold closing direction. The second mold assembly further includes a lifting pin elastically movably disposed on the second mold base along the mold closing direction. When the first mold assembly and the second mold assembly are closed, the support member and the stripper plate clamp the workpiece along the mold closing direction. After the first mold assembly and the second mold assembly are opened, the lifting pin is used to push the workpiece to a position with a preset distance from the second mold base.
[0016] In the aforementioned stamping die, the support member has a support surface facing the first die assembly. When the first die assembly and the second die assembly are closed, the support surface can clamp the workpiece together with the first die assembly, preventing this part of the workpiece from being affected by the bending action. Furthermore, during die closing, the first slider can be driven by the first wedge to move along the lateral push direction, pushing the part of the workpiece to be bent against the reference surface. It can be understood that the reference surface is inclined relative to the support surface, and the support surface is used to cooperate with the first die assembly to clamp the workpiece. The support surface has approximately the same flatness as the area of the workpiece that does not require bending. In other words, in this embodiment, by driving the first slider to laterally push the part of the workpiece to be bent, and making that part conform to the inclined reference surface, the workpiece can be bent to the expected inclination angle. Simultaneously, the lateral push direction is inclined to the die closing direction; compared to stamping and bending along the die closing direction, lateral pushing bending in the lateral push direction allows the part of the workpiece to have a larger bending angle.
[0017] Furthermore, the support member can elastically extend through the second mold base along the mold closing direction, meaning the support member can elastically extend outward from the second mold base and elastically retract under the downward pressure of the first mold assembly, thus abutting against the first mold assembly. Therefore, whether the mold is opening or closing, the support member can always be approximately held in the position where the support surface mates with the first mold assembly to clamp the workpiece; that is, the support member can always be held in a fixed position relative to the workpiece being bent. It is easy to understand that the mold closing process is also the process of the first slider pushing the workpiece to bend. Therefore, the support member is always configured to be in a state of elastic lifting, so that the support member is always in a position where its reference surface can cooperate with the first slider to bend the workpiece, thereby stably providing a bending reference. Attached Figure Description
[0018] Figure 1 This is an isometric schematic diagram of a stamping die provided in an embodiment of this application.
[0019] Figure 2 for Figure 1 The diagram shows an exploded view of the stamping die.
[0020] Figure 3 This is a schematic diagram showing the state of a workpiece bent at different angles according to an embodiment of this application.
[0021] Figure 4 for Figure 1 The first folding group in the stamping die shown is in a cross-sectional view in the direction perpendicular to the material conveying.
[0022] Figure 5 for Figure 4 A cross-sectional view of a portion of the structure in the stamping die shown.
[0023] Figure 6 This is a top view of an exemplary strip provided in an embodiment of this application.
[0024] Figure 7 for Figure 6 The diagram shows an isometric view of an exemplary strip.
[0025] Figure 8 for Figure 1 The figure shows a cross-sectional view of the second folding group in the stamping die, positioned perpendicular to the material feeding direction.
[0026] Figure 9 for Figure 1 The diagram shows a cross-sectional view of the first bending group in the stamping die, positioned perpendicular to the material feeding direction.
[0027] Figure 10 for Figure 1 The figure shows a cross-sectional view of the second bending group in the stamping die, in the direction perpendicular to the material feeding direction.
[0028] Reference numerals: 10. Stamping die; 20. Cutting station; 30. Bending station; 31. First bending station; 32. Second bending station; 40. Folding station; 41. First folding station; 42. Second folding station; 50. Cutting station; 60. Strip material; 70. Workpiece; 71. First area; 72. Second area; 73. First position; 74. Second position; 75. Base plate; 76. First arm; 77. Second arm; 100. First die assembly; 110. First die base; 120. First wedge; 121. Driving surface; 130. Stripper plate; 140. Second wedge; 150. First die cavity; 151. First groove; 160. Second punch; 200. Second die assembly Components; 201, Floating pin; 210, Second mold base; 220, Support component; 221, Reference surface; 222, Support surface; 230, First slider; 231, Main body; 231a, Side push surface; 232, Side push part; 233, Hollowed-out area; 240, Template; 241, Receiving cavity; 242, First cavity; 243, Second cavity; 251, First elastic element; 252, Ejector rod; 253, Second elastic element; 254, Connecting rod; 260, Third elastic element; 270, Second slider; 271, Receiving groove; 281, First punch; 282, Supporting part; 290, Second die cavity; 291, Second groove; S1, Mold closing direction; S2, Side push direction; S3, Material conveying direction. Detailed Implementation
[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0030] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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.
[0031] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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 or an electrical connection; 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 in this application based on the specific circumstances.
[0033] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0034] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0035] See Figure 1 and Figure 2 , Figure 1 This invention provides an isometric schematic diagram of a stamping die according to an embodiment of the present application. Figure 2 for Figure 1The diagram shows an exploded view of a stamping die. An embodiment of this application provides a stamping die 10 including a first die assembly 100 and a second die assembly 200. The first die assembly 100 and the second die assembly 200 can open and close to stamp the material strip. When the first die assembly 100 and the second die assembly 200 are open, there is a certain gap between them, and the material strip moves along the feeding direction S3, causing different areas on the material strip to be stamped. When the first die assembly 100 and the second die assembly 200 are closed, the components of both can compress the desired area on the material strip, causing the solid structure in that area to deform and have the desired shape (i.e., the initial form of the workpiece). As one example, the first die assembly 100 can be configured as the upper die, and the second die assembly 200 can be configured as the lower die. In this case, the first die assembly 100 actively presses down to perform the closing action. Of course, the first module component 100 is not limited to being configured as the upper mold, nor is it limited to being configured as the active pressing down of the first module component 100. The second module component 200 is also not limited to being configured as the lower mold. They can be adjusted according to actual needs, which will not be elaborated here.
[0036] Please see Figure 3 , Figure 3 This is a side view of an exemplary workpiece provided in an embodiment of this application. The workpiece 70 has a first region 71 and a second region 72. The stamping die 10 is intended to be able to bend the first region 71 relative to the second region 72 through stamping. For conventional stamping dies, an upper die mechanism typically presses down on the first region 71, allowing the first region 71 to fold relative to the second region 72 after being stamped. However, when conventional stamping dies stamp the workpiece 70 from top to bottom, the connection between the first region 71 and the second region 72 is obstructed, limiting the bending of the first region 71 to a maximum of a first position 73, achieving a bend of approximately 90°. When the workpiece 70 is required to bend the first region 71 to a second position 74 for a larger angle bend, conventional stamping dies cannot achieve this. The stamping die 10 provided in the embodiments of this application, however, can bend the workpiece 70 at a larger angle to meet stamping requirements.
[0037] Please see Figure 5 Combined Figure 4In one embodiment, the first mold assembly 100 includes a first mold base 110 and a first wedge 120. The first wedge 120 is connected to the first mold base 110 and can perform a downward pressing and mold closing action with the first mold base 110. The second mold assembly 200 includes a second mold base 210, a support member 220, and a first slider 230. Both the support member 220 and the first slider 230 are disposed on the second mold base 210. The support member 220 is elastically and movably inserted through the second mold base 210 along the mold closing direction S1. The first slider 230 is movably embedded in the second mold base 210 along the lateral pushing direction S2 and is spaced apart from the support member 220 along the lateral pushing direction S2. The support member 220 has a support surface 222 and a reference surface 221. The support surface 222 faces the first mold assembly 100, and the reference surface 221 is located on the side closer to the first slider 230 in the lateral pushing direction S2. The reference surface 221 is inclined relative to the support surface 222, and the lateral pushing direction S2 intersects the mold closing direction S1. When the first mold assembly 100 and the second mold assembly 200 are molded together, the support surface 222 and the first mold assembly 100 clamp the workpiece 70 along the mold closing direction S1. Furthermore, when the first mold assembly 100 and the second mold assembly 200 are molded together, the first slider 230 is driven by the first wedge 120 to move along the lateral pushing direction S2 to push the part of the workpiece 70 to be folded (i.e., the first region 71 and the first arm portion 76 mentioned below) against the reference surface 221.
[0038] In the aforementioned stamping die 10, the support member 220 has a support surface 222 facing the first die assembly 100. When the first die assembly 100 and the second die assembly 200 are closed, the support surface 222 can clamp the workpiece 70 together with the first die assembly 100, so that this part of the workpiece 70 is not affected by the bending action. Furthermore, during die closing, the first slider 230 can be driven by the first wedge 120 to move along the lateral pushing direction S2, pushing the part of the workpiece 70 to be folded against the reference surface 221. It can be understood that the reference surface 221 is inclined relative to the support surface 222, and the support surface 222 is used to cooperate with the first die assembly 100 to clamp the workpiece 70. The support surface 222 has a flatness approximately the same as the area of the workpiece 70 that does not require bending. In other words, in this embodiment, the first slider 230 is driven to push the part of the workpiece 70 to be bent, and the part to be bent is brought into contact with the inclined reference surface 221, so that the workpiece 70 can be bent to the expected inclination angle. At the same time, the pushing direction S2 is inclined to the mold closing direction S1. Compared with the stamping bending along the mold closing direction S1, the pushing bending in the pushing direction S2 can give the part of the workpiece 70 to be bent a larger bending angle.
[0039] Furthermore, the support member 220 is elastically movably inserted through the second mold base 210 along the mold closing direction S1. That is, the support member 220 can elastically extend outward from the second mold base 210 and can elastically retract and abut against the first mold assembly 100 under the downward pressure of the first mold assembly 100. Therefore, whether the mold is opening or closing, the support member 220 can always be approximately held in the position where the support surface 222 and the first mold assembly 100 cooperate to clamp the workpiece 70, that is, the support member 220 can always be held in a fixed position relative to the workpiece 70 to be bent. It is easy to understand that the mold closing process is also the process of the first slider 230 pushing the workpiece 70 to bend. Therefore, the support member 220 is always configured to be in a state of elastic lifting, so that the support member 220 is always in the position where its reference surface 221 can cooperate with the first slider 230 to bend the workpiece 70, so as to stably provide a bending reference.
[0040] It should be noted that before being pushed by the first slider 230, the part of the workpiece 70 to be bent (hereinafter referred to as the first region 71) may have a certain pre-bending range, so that the first slider 230 can act on the side of the first region 71 facing the first die assembly 100 to push the workpiece 70 to bend. As one example, this pre-bending range can be formed by pre-processing with other stamping dies or other equipment. In this case, the stamping die 10 can be configured as a die specifically for large-angle bending.
[0041] As another example, the pre-bending radius can also be formed by stamping with the stamping die 10 provided in the embodiments of this application. In this case, the stamping die 10 can be configured as a continuous stamping die 10, which is capable of forming flat strips 60 (such as...) Figure 6 and Figure 7 (As shown) Continuous stamping is performed on the strip 60, so that multiple areas on the strip 60 are formed with the desired structure of the workpiece 70. In this embodiment, the stamping die 10 may have a cutting group, a bending group, and a folding group, each of which is multiple. The cutting group can cut the strip 60 to remove excess material from the strip 60, so that the solid structure in each area of the strip 60 has the preliminary shape of the workpiece 70. The bending group can bend each part of the workpiece 70, so that the workpiece 70 is bent. The folding group can bend the workpiece 70 at a larger angle to meet the shape requirements of the workpiece 70. The first wedge 120, the support 220, and the first slider 230, as mentioned above, can be the first folding group.
[0042] It should be noted that the embodiments of this application are described using the example that the stamping die 10 can perform complete stamping processing on the strip 60, so that each area of the strip 60 can directly form the final structure of the workpiece 70. In other embodiments, the stamping die 10 may also include only some of the stamping stations, which are also within the protection scope of this application, and will not be described in detail in each embodiment.
[0043] Please see Figure 6 and Figure 7 In one embodiment, the extension direction of the strip 60 is the same as the feeding direction S3 described above. The strip 60 can move relative to the stamping die 10 under the drive of a feeder (not shown, the same below), causing each area to move to a specific station within the stamping die 10. It is understood that the multiple stations include a cutting station 20, with a cutting group corresponding to the cutting station 20, used to cut the workpiece 70 located at the cutting station 20. The multiple stations also include a bending station 30, with a bending group corresponding to the bending station 30, used to bend the workpiece 70 located at the bending station 30. Finally, the multiple stations include a folding station 40, with a folding group corresponding to the folding station 40, used to fold the workpiece 70 located at the folding station 40.
[0044] like Figure 6 and Figure 7 As one example, the stamping die 10 may include five cutting groups, each corresponding to one of the five cutting stations 20. As the strip 60 passes through the five cutting stations 20 along the feeding direction S3, it is cut by each cutting group to remove the corresponding area from the strip 60, thus forming the preliminary shape of the workpiece 70. It should be noted that at each cutting station 20 (especially the cutting station 20 located relatively downstream), the workpiece 70 can also be bent at a relatively small angle simultaneously.
[0045] The stamping die 10 may include two bending groups, each corresponding to a bending station 30. When the strip 60 passes through the two bending stations 30 along the feeding direction S3, it is bent by each bending group, thus bending the workpiece 70. The two bending groups can bend different areas of the workpiece 70 respectively. For example, combining... Figure 7 The workpiece 70 includes a substrate 75, a first arm 76, and a second arm 77. Two bending groups bend different arms of the workpiece 70 in stages to reduce the risk of breakage during simultaneous bending. Figure 6 and Figure 7 As shown, as one example, one bending assembly can fold the first arm 76 from a horizontal position to a vertical position facing upward or downward along the mold closing direction S1; and another bending assembly can fold the second arm 77 from a horizontal position to a vertical position facing downward or upward along the mold closing direction S1.
[0046] The stamping die 10 may include two folding groups, each corresponding to a folding station 40. When the strip 60 passes through the two folding stations 40 along the feeding direction S3, it is bent by each folding group, causing the workpiece 70 to be folded. As one example, the two folding groups can perform step-by-step large-angle bending on the same arm portion; for example, the two folding groups can bend the first arm portion 76. Figure 6and Figure 7 As shown, the folding assembly can fold the vertically upward or downward-facing first arm 76 until a portion of the first arm 76 is in contact with the substrate 75. That is, with the combined action of the bending assembly and the folding assembly, the first arm 76 can be gradually folded 180° from a state coplanar with the substrate 75 until it is in a reverse-facing contact with the substrate 75. Alternatively, the two folding assemblies can fold the first arm 76 and the second arm 77 respectively.
[0047] Please refer to it again. Figure 4 and Figure 5 In one embodiment, the first mold assembly 100 further includes a stripper plate 130, which is connected to the first mold base 110 and can elastically move relative to the first mold base 110 along the mold closing direction S1. During mold closing, the stripper plate 130 contacts the second mold assembly 200 to press the strip 60, reducing the risk of the strip 60 shifting under pressure during stamping. Similarly, when the first mold assembly 100 and the second mold assembly 200 are closed, the support member 220 and the stripper plate 130 clamp the workpiece 70 along the mold closing direction S1. Further, the first mold base 110 is located on the side of the stripper plate 130 opposite to the second mold assembly 200, and the first wedge 120 is connected to the first mold base 110, passes through the stripper plate 130, and extends outward from the stripper plate 130. Therefore, after mold closing, the first wedge 120 can extend into the second mold assembly 200 to drive the first slider 230 to move laterally.
[0048] Please see Figure 4 Combined Figure 2 In one embodiment, the second mold assembly 200 further includes a floating pin 201, which is elastically and movably disposed on the second mold base 210 along the mold closing direction S1. After the first mold assembly 100 and the second mold assembly 200 open, the floating pin 201 is used to push the workpiece 70 to a position with a preset distance from the second mold base 210, so that the strip 60 is suspended relative to the main body of the second mold assembly 200 after mold opening, reducing the risk of interference and collision between the strip 60 and the main body of the second mold assembly 200 during the feeding process along the conveying direction S3. In other words, this arrangement can improve the smoothness of the movement of the strip 60. After the first mold assembly 100 and the second mold assembly 200 open, the stripper plate 130 and the first mold base 110 have a preset distance, which can be less than or equal to the preset distance.
[0049] Furthermore, the second mold assembly 200 also includes a template 240, which is used to contact the first mold assembly 100 during mold closing. That is, when the first mold assembly 100 and the second mold assembly 200 are closed, the template 240 and the stripper plate 130 clamp the strip 60, improving the positional stability of the strip 60. The lifting pin 201 is used to push the strip 60 after mold opening, making it suspended relative to the template 240, improving the smoothness of the strip 60's feeding movement.
[0050] Please see Figures 1 to 4 In one embodiment, the side-pushing direction S2 may be perpendicular to the mold-closing direction S1. Further, the material conveying direction S3, the side-pushing direction S2, and the mold-closing direction S1 are all perpendicular to each other. The material strip 60 may be parallel to the plane defined by the material conveying direction S3 and the side-pushing direction S2.
[0051] Please refer to it again. Figure 4 and Figure 5 In one embodiment, the second mold assembly 200 includes a first elastic member 251. The first elastic member 251 elastically abuts between the second mold base 210 and the support member 220, and the first elastic member 251 is elastically compressed when the support member 220 is abutted by the first mold assembly 100. It is understood that the first elastic member 251 is compressed and accumulates elastic potential energy when the mold is closed. After the mold is opened, the first elastic member 251 can push the support member 220 to rise together with the first mold assembly 100, so that the support member 220 can always move together with the workpiece 70, thereby the reference surface 221 always has a generally fixed position relative to the workpiece 70, which facilitates providing a reference for the bending action of the first slider 230.
[0052] Please see Figure 4 In one embodiment, the support member 220 is movably inserted through the template 240. One end of the first elastic member 251 abuts against the second mold base 210, and the other end passes through the template 240 and abuts against the support member 220. The first slider 230 is movably embedded in the template 240 along the lateral pushing direction S2. The template 240 can provide guidance for the movement of the first slider 230, so that it stably pushes the first arm 76 laterally, causing the first arm 76 to bend. Further, the second mold assembly 200 may also include a push rod 252, which is arranged between the first elastic member 251 and the support member 220, with its two ends abutting against the first elastic member 251 and the support member 220 respectively to transmit elastic force. In this case, the first elastic member 251 can be completely distributed within the first mold base 110.
[0053] Please see Figure 5 In one embodiment, the template 240 has a receiving cavity 241. The receiving cavity 241 includes a first cavity 242 and a second cavity 243, which are interconnected. A support member 220 is disposed in the first cavity 242, and the cavity wall of the first cavity 242 can guide the elastic floating motion of the support member 220, thereby improving the stability of the movement of the support member 220. A first slider 230 is disposed in the second cavity 243, and the cavity wall of the second cavity 243 can guide the lateral pushing motion of the first slider 230, thereby improving the stability of the movement of the first slider 230.
[0054] Please see Figure 5In one embodiment, the first slider 230 includes a main body 231 and a side-push portion 232. The side-push portion 232 is located on the side of the main body 231 near the support member 220 and is used to abut against the workpiece 70 and bend the workpiece 70 in conjunction with the reference surface 221. In the first slider 230, at least a portion of the side-push portion 232 on the side away from the first mold assembly 100 along the mold closing direction S1 is hollowed out. It is understood that when the first slider 230 bends the first arm 76, the hollowed-out area 233 corresponds to the end of the first arm 76 away from the substrate 75, that is, it corresponds to the non-bending area of the first arm 76. Therefore, configuring the first slider 230 to have the aforementioned hollowed-out area 233 can avoid the non-bending area of the first arm 76, so that the molding structure that may exist in this area is not affected by the side-push bending. It is understood that since the first cavity 242 and the second cavity 243 are connected, there is sufficient space between them to accommodate the folded first arm 76.
[0055] In one embodiment, the first wedge 120 and the first slider 230 may have mutually engaging inclined surfaces, so that when the mold is closed, the first wedge 120 can drive the first slider 230 to approach the support member 220 along the lateral pushing direction S2 through the inclined surface engagement.
[0056] Please see Figure 5 Combined Figure 4 Furthermore, the first wedge 120 has a driving surface 121, which gradually flips away from the second mold assembly 200 in the direction along the lateral push direction S2 towards the side where the support member 220 is located. The area of the main body 231 away from the lateral push portion 232 has a lateral push surface 231a, which faces the first mold assembly 100 and gradually flips towards the first mold assembly 100 in the direction along the lateral push direction S2 towards the support member 220. Thus, during the mold closing process, the driving surface 121, by abutting against the lateral push surface 231a, can drive the first slider 230 to move towards the support member 220.
[0057] Please see Figure 4 In one embodiment, the second mold assembly 200 further includes a second elastic member 253, which extends along the lateral push direction S2 and connects the template 240 and the first slider 230. The second elastic member 253 is compressed when the first slider 230 moves toward the support member 220. Thus, after the mold is opened and the first wedge 120 separates from the first slider 230, the second elastic member 253 can push the first slider 230 back to its position before being driven by the first wedge 120, facilitating repeated lateral push bending of the first arm 76 at different areas on the strip 60.
[0058] Furthermore, the second mold assembly 200 also includes a connecting rod 254, one end of which is located outside the template 240, and the other end passes through the receiving cavity 241 and is connected to the first slider 230. One end of the second elastic member 253 is connected to the end of the connecting rod 254 located outside the template 240, and the other end abuts against the side of the template 240 away from the first slider 230, so as to be compressed when the first slider 230 moves toward the support member 220.
[0059] As can be understood, as mentioned above, the first wedge 120, the support member 220, and the first slider 230 constitute the first folding assembly. Supported by the reference surface 221 of the support member 220, the folded first arm 76 can be folded relative to the substrate 75 to a desired angle. Furthermore, another folding assembly can be configured to further fold the first arm 76, causing a portion of the first arm 76 to adhere to the substrate 75.
[0060] Please see Figure 8 In one embodiment, the first mold assembly 100 further includes a second wedge 140, which is connected to the first mold base 110 to perform a pressing and closing action together with the first mold base 110. The second mold assembly 200 further includes a second slider 270, which is movably embedded in the second mold base 210 along the lateral pushing direction S2. The side of the second slider 270 facing the first mold assembly 100 has a receiving groove 271. It is understood that when the second mold assembly 200 has a template 240, the second slider 270 can be embedded in the template 240.
[0061] When the first mold assembly 100 and the second mold assembly 200 are closed, the bottom wall of the receiving groove 271 forms a molding cavity with a gap between it and the first mold assembly 100. The second slider 270 is driven by the second wedge 140 to move in the lateral pushing direction S2 to push the workpiece 70, causing the workpiece 70 to fold and be received in the molding cavity. The second wedge 140 and the second slider 270 form a second folding group, which is located downstream of the first folding group to further fold the first arm portion 76 after it has been folded by the first folding group. Figure 6 and Figure 7 The first folding group corresponds to the first folding station 41, and the second folding group corresponds to the second folding station 42.
[0062] Furthermore, similar to the first folding assembly, the second mold assembly 200 also includes a third elastic element 260, which is connected between the second slider 270 and the template 240. The third elastic element 260 is compressed when the second slider 270 is driven to move in the lateral pushing direction S2, and the third elastic element 260 drives the second elastic element 253 to reset after the driving force is removed.
[0063] Please see Figure 9 and Figure 10In one embodiment, each bending assembly can be configured to have similar constituent components. As one example, the bending assembly includes a punch and a die, one of which is disposed in a first die holder 110 and the other in a second die holder 210, so that they can move relative to each other when the die is closed. The die has a groove, and the punch is aligned with the groove along the die-closing direction S1. After the die is closed, the punch can extend into the groove to cooperate with the groove in supporting the pressurized workpiece 70, so that the workpiece 70 has the desired shape.
[0064] It is easy to understand that for each bending group, by adjusting the distribution and specific shape of the punch and groove, the strip can be stamped at 60° to be bent into different shapes, which will not be elaborated here.
[0065] Please see Figure 9 In one embodiment, the first mold assembly 100 includes a first die 150 disposed on a first mold base 110, and the first die 150 has a first groove 151. The second mold assembly 200 includes a first punch 281 and a holding portion 282. The first punch 281 is disposed on the second mold base 210 and aligned with the first groove 151 along the mold closing direction S1. Therefore, after mold closing, the first punch 281 can extend into the first groove 151 and, together with the groove wall of the first groove 151, clamp a local area of the workpiece 70, giving it the desired shape. For example, the first punch 281 can cooperate with the first die 150 to bend the second arm portion 77. When the mold is closed, the first punch 281 can push the second arm portion 77 into the first groove 151, and the first punch 281 and the groove wall of the first groove 151 can jointly hold the second arm portion 77, giving it the desired bent state.
[0066] Furthermore, the abutment portion 282 is fitted around at least a portion of the area outside the first punch 281. The abutment portion 282 is elastically and movably disposed on the second mold base 210 along the mold closing direction S1. The abutment portion 282 and the first mold assembly 100 jointly abut against the workpiece 70. Similar to the support member 220, the abutment portion 282 can abut against the workpiece 70 after mold closing, keeping the area of the workpiece 70 that does not require bending stable, facilitating accurate stamping of the workpiece 70 to form the desired bent state. The abutment portion 282 can also abut against the workpiece 70 together with the stripper plate 130. It is easily understood that the first die 150, the first punch 281, and the abutment portion 282 constitute one bending group, for example, it can be referred to as the first bending group. The first bending group can be used to bend the second arm portion 77. Figure 6 and Figure 7 The first bending group corresponds to the first bending station 31. Furthermore, the first die 150 can be integrally formed with the stripper plate 130 or the template 240, for example... Figure 9 The first die 150 is shown. Alternatively, the first die 150 can also be configured as a separate element.
[0067] Please see Figure 10 In one embodiment, the second mold assembly 200 includes a second die 290 disposed on the second mold base 210, and the second die 290 has a second groove 291. The first mold assembly 100 includes a second punch 160 disposed on the first mold base 110 and aligned with the second groove 291 along the mold closing direction S1. Therefore, after mold closing, the second punch 160 can extend into the second groove 291 and clamp a local area of the workpiece 70 together with the groove wall of the second groove 291, so that it has the desired shape. For example, the second punch 160 can cooperate with the second die 290 to perform a preliminary bending of the first arm 76, so that the first arm 76 has the pre-bending range as described above, which facilitates the first slider 230 to act on the side of the first region 71 facing the first mold assembly 100. During mold closing, the second punch 160 pushes the first arm 76 into the second groove 291. The second punch 160 and the groove wall of the second groove 291 together abut against the first arm 76, giving it the desired shape. The second punch 160 and the second die 290 can be another bending group, for example, referred to as the second bending group. Figure 6 and Figure 7 The second bending group corresponds to the second bending station 32. The second bending group can be located upstream of the first folding group. The second bending group bends the workpiece 70, giving it a pre-bending radius. Subsequently, the first folding group further folds the workpiece 70. It is understood that the embodiments of this application do not limit the positions of the first bending group, the second bending group, the first folding group, and the second folding group; they can be configured according to specific needs.
[0068] It should be noted that, in the embodiments of this application, "upstream" refers to the position first passed by the material conveyor belt 60 along the conveying direction S3; "downstream" is the opposite, referring to the position later passed by the material conveyor belt 60 along the conveying direction S3.
[0069] Combination Figure 6 and Figure 7 In one embodiment, the stamping die 10 further includes a cutting group, which corresponds to the cutting station 50. After the workpiece 70 is stamped, the workpiece 70 is conveyed along the conveying direction S3 to the cutting workpiece 70 corresponding to the cutting group. The cutting group can cut off the connection between the workpiece 70 and other areas of the strip 60, so that the workpiece 70 is separated from the strip 60.
[0070] The stamping die 10 provided in the various embodiments of this application may also include common components in dies such as backing plates and guide pillars, which will not be described in detail here.
[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0072] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A stamping die, characterized in that, The stamping die includes: A first mold assembly, the first mold assembly including a first mold base and a first wedge block, the first wedge block being connected to the first mold base; The second mold assembly includes a second mold base, a support member, a first slider, and a first elastic member. The support member is elastically and movably inserted through the second mold base along the mold closing direction. The first slider is movably embedded in the second mold base along the lateral pushing direction and is spaced apart from the support member along the lateral pushing direction. The support member has a support surface and a reference surface. The support surface faces the first mold assembly, and the reference surface is located on the side closer to the first slider in the lateral pushing direction. The reference surface is inclined relative to the support surface, and the lateral pushing direction intersects the mold closing direction. The first elastic member elastically abuts between the second mold base and the support member, and the first elastic member elastically compresses when the support member is abutted by the first mold assembly. When the first mold assembly and the second mold assembly are closed, the support surface and the first mold assembly clamp the workpiece along the mold closing direction, and the first slider is driven by the first wedge to move along the side pushing direction to push the part of the workpiece to be folded against the reference surface. The first mold assembly further includes a second wedge block connected to the first mold base. The second mold assembly also includes a second slider movably embedded in the second mold base along the lateral pushing direction. The side of the second slider facing the first mold assembly has a receiving groove. When the first mold assembly and the second mold assembly are closed, the bottom wall of the receiving groove forms a molding cavity with the first mold assembly at a distance. The second slider is driven by the second wedge to move along the side pushing direction to push the workpiece, so that the workpiece is folded and received in the molding cavity. The first wedge, the support member, and the first slider form a first folding group, and the second wedge and the second slider form a second folding group, with the second folding group located downstream of the first folding group.
2. The stamping die according to claim 1, characterized in that, The second mold assembly further includes a template for contacting the first mold assembly during mold closing. The support member is movably inserted through the template. The first slider is movably embedded in the template along the lateral pushing direction. One end of the first elastic member abuts against the second mold base, and the other end passes through the template and abuts against the support member.
3. The stamping die according to claim 1, characterized in that, The first slider includes a main body and a side pusher portion disposed on the side of the main body near the support member. The side pusher portion is used to abut against the workpiece and bend the workpiece in conjunction with the reference surface. At least a portion of the first slider is hollowed out along the mold closing direction on the side of the side push portion opposite to the first mold assembly.
4. The stamping die according to claim 3, characterized in that, The area of the main body away from the side push portion has a side push surface facing the first module assembly. In the direction of the side push direction toward the support member, the side push surface gradually flips toward the first module assembly.
5. The stamping die according to claim 4, characterized in that, The first wedge has a driving surface that gradually flips away from the second module assembly in a direction close to the support member along the lateral pushing direction. During the mold closing process, the driving surface abuts against the side push surface, driving the first slider to move closer to the support member.
6. The stamping die according to claim 3, characterized in that, The second mold assembly further includes a template for contacting the first mold assembly during mold closing. The template has a receiving cavity, which includes a first cavity and a second cavity that are interconnected. The support member is disposed in the first cavity, and the first slider is disposed in the second cavity. The second module assembly further includes a second elastic element that extends along the lateral thrust direction and connects the template to the first slider. The second elastic element is compressed when the first slider moves toward the support member.
7. The stamping die according to claim 1, characterized in that, The stamping die includes multiple bending groups, each bending group including a punch and a die. One of the punch and the die is disposed on the first die base, and the other is disposed on the second die base. The die has a groove, and the punch is aligned with the groove along the die closing direction.
8. The stamping die according to claim 7, characterized in that, The first mold assembly includes a first die cavity disposed on the first mold base, the first die cavity having a first groove. The second mold assembly includes a first punch and a supporting portion. The first punch is disposed on the second mold base and aligned with the first groove along the mold closing direction. The supporting portion is sleeved on at least a portion of the area outside the first punch. The supporting portion is elastically movably disposed on the second mold base along the mold closing direction. The supporting portion and the first mold assembly together support the workpiece. The first die, the first punch, and the supporting part constitute one of the bending groups.
9. The stamping die according to claim 1, characterized in that, The first mold assembly further includes a stripper plate, which is connected to the first mold base and can be elastically movable relative to the first mold base along the mold closing direction. The second mold assembly further includes a floating pin, which is elastically movable on the second mold base along the mold closing direction. When the first mold assembly and the second mold assembly are closed, the support member and the stripper plate clamp the workpiece along the mold closing direction; After the first mold assembly and the second mold assembly are opened, the floating pin is used to push the workpiece to a position with a preset distance from the second mold base.
10. The stamping die according to claim 1, characterized in that, The side-pushing direction is perpendicular to the mold-closing direction.