Stamping die

Abstract

The invention relates to a stamping die which comprises a first die assembly and a second die assembly, the first die assembly comprises a first die base and a first wedge block, and the first wedge block is connected with the first die base; the second mold assembly comprises a second mold base, a supporting piece and a first sliding block, the supporting piece can elastically and movably penetrate through the second mold base in the mold closing direction, the first sliding block is movably embedded in the second mold base in the side pushing direction and is spaced from the supporting piece in the side pushing direction, the supporting piece is provided with a supporting face and a datum plane, and the supporting face faces the first mold assembly; the reference surface is located on the side close to the first sliding block in the side pushing direction, the reference surface is obliquely arranged relative to the supporting surface, and the side pushing direction intersects with the mold closing direction; when the first mold assembly and the second mold assembly are closed, the supporting face and the first mold assembly clamp the workpiece in the mold closing direction, and the first sliding block is driven by the first wedge block to move in the side pushing direction so as to push the to-be-folded part of the workpiece to the datum plane in an abutting mode.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and in particular to a stamping mold. Background Art

[0002] A stamping die is a common tool that uses pressure to plastically deform a material through the relative motion of an upper and lower die. Traditional stamping dies can bend products. For example, the lower die is designed with a cavity, and the upper die presses downward, pushing a specific area of ​​a flat material into the cavity, thereby bending a specific part of the product.

[0003] However, when a large-angle bend is required, for example, a bend angle exceeding 90 degrees, it is difficult to achieve the desired bend angle when the upper die is pressed downward. Summary of the Invention

[0004] Based on this, it is necessary to provide a stamping die to address the problem that traditional stamping dies are difficult to achieve large-angle bending.

[0005] On the one hand, the present application provides a stamping die, which includes a first die assembly and a second die assembly, the first die assembly including a first die base and a first wedge block, the first wedge block being connected to the first die base; the second die assembly including a second die base, a support member and a first slider, the support member being elastically and movably arranged through the second die base along the mold closing direction, the first slider being movably embedded in the second die base along the side pushing direction, and being spaced apart from the support member along the side pushing direction, the support member having a supporting surface and a reference surface, the supporting surface facing the first die assembly, the reference surface being located on a side close to the first slider in the side pushing direction, the reference surface being inclined relative to the supporting surface, and the side pushing direction intersecting with the mold 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 mold closing direction, and the first slider is driven by the first wedge block to move along the side pushing direction to push the part of the workpiece to be folded to the reference surface.

[0006] In one embodiment, the second mold assembly includes a first elastic member, the first elastic member elastically abuts between the second mold base and the support member, and the first elastic member is elastically compressed when the support member is abutted by the first mold assembly.

[0007] In one embodiment, the second mold assembly further includes a template, which is used to contact the first mold assembly when the mold is closed. The support member is movably inserted into the template, and the first slider is movably embedded in the template along the side push direction. One end of the first elastic member abuts the second mold base, and the other end penetrates the template and abuts the support member.

[0008] In one embodiment, the first slider includes a main body and a side push portion provided on the side of the main body close to the support member, the side push portion is used to abut the workpiece and bend the workpiece in cooperation with the reference surface; at least a portion of the area of ​​the first slider along the mold closing direction on the side of the side push portion away from the first mold assembly is hollowed out.

[0009] In one embodiment, the area of ​​the main body away from the side pushing portion has a side pushing surface facing the first mold assembly, and in the direction approaching the support member along the side pushing direction, the side pushing surface gradually flips toward the direction approaching the first mold assembly.

[0010] In one embodiment, the second mold assembly further includes a template, the template being used to contact the first mold assembly when the mold is closed, the template having a receiving cavity, the receiving cavity including a first cavity and a second cavity that are interconnected, the support member being disposed in the first cavity, and the first slider being disposed in the second cavity;

[0011] The second mold assembly further includes a second elastic member, which extends along the side pushing direction and connects the template and the first slider. The second elastic member 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, which is connected to the first mold base, and the second mold assembly further includes a second slider, which is movably embedded in the second mold base along the side pushing direction, and the second slider has a receiving groove on the side facing the first mold assembly; when the first mold assembly and the second mold assembly are closed, the bottom wall of the receiving groove is spaced from the first mold assembly to form a forming cavity, and the second slider is driven by the second wedge block to move along the side pushing direction to push the workpiece so that the workpiece is folded and accommodated in the forming cavity; the first wedge block, the support member and the first slider are a first folding group, and the second wedge block and the second slider are a second folding group, and the second folding group is located on the downstream side of the first folding group.

[0013] In one embodiment, the stamping die includes multiple bending groups, each of which includes a punch and a die. One of the punch and the die is located on the first die base, and the other is located on the second die base. The die has a groove, and the punch is aligned with the groove along the mold closing direction.

[0014] In one embodiment, the first die assembly includes a first die provided on the first die base, the first die has a first groove, the second die assembly includes a first punch and a supporting portion, the first punch is provided on the second die base and is 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 and movably provided on the second die base along the mold closing direction, and the supporting portion and the first die assembly jointly support the workpiece; the first die, the first punch and the supporting portion are one of the bending groups.

[0015] In one embodiment, the first mold assembly further includes a stripper plate, which is connected to the first mold base and can elastically move 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.

[0016] In the aforementioned stamping die, the support member includes a support surface that faces the first die assembly. When the first and second die assemblies are closed, the support surface can clamp the workpiece together with the first die assembly, thereby protecting that portion of the workpiece from bending. Furthermore, during closing, the first slider can be driven by the first wedge to move in a lateral push direction to push the portion of the workpiece to be folded against the reference surface. It will be understood that the reference surface is inclined relative to the support surface, and the support surface is configured to cooperate with the first die assembly to clamp the workpiece. The support surface has approximately the same flatness as the portion of the workpiece that does not require bending. In other words, in this embodiment, by driving the first slider to lateral push the portion of the workpiece to be bent, and thereby causing the portion to conform to the inclined reference surface, the workpiece can be bent to a desired angle. Furthermore, the lateral push direction is inclined relative to the closing direction. Compared to performing press bending along the closing direction, performing lateral bending in the lateral push direction can achieve a greater bending angle for the portion of the workpiece to be bent.

[0017] Furthermore, the support member is elastically movable along the mold closing direction and penetrates the second mold base, that is, the support member can elastically extend outward from the second mold base, and can elastically retract and abut the first mold assembly under the downward pressure of the first mold assembly. Therefore, whether the mold is opened or closed, the support member can always be roughly maintained in the position where the support surface and the first mold assembly cooperate to clamp the workpiece, that is, the support member can always be maintained in a fixed position relative to the workpiece to be bent. It is easy to understand that the mold closing process is also the process of the first slider pushing the workpiece sideways to bend, so the support member is always configured to be roughly in an elastically raised state, 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 providing a stable bending reference. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an axonometric diagram of a stamping die provided in one embodiment of the present application.

[0019] Figure 2 for Figure 1 Exploded schematic diagram of the stamping die shown.

[0020] Figure 3 Schematic diagram of a workpiece provided in an embodiment of the present application when bent at different angles.

[0021] Figure 4 for Figure 1 The cross-sectional view of the first folding group in the stamping die is shown in the vertical feeding direction.

[0022] Figure 5 for Figure 4 A cross-sectional view of part of the structure in the stamping die is shown.

[0023] Figure 6 A top view of an exemplary material strip provided in accordance with an embodiment of the present application.

[0024] Figure 7 for Figure 6 A schematic isometric view of an exemplary strip shown.

[0025] Figure 8 for Figure 1 The cross-sectional view of the second folding group in the stamping die is shown in the vertical feeding direction.

[0026] Figure 9 for Figure 1 A cross-sectional view of the first bending group in the stamping die shown in the vertical feeding direction.

[0027] Figure 10 for Figure 1 A cross-sectional view of the second bending group in the stamping die shown in the vertical feeding direction.

[0028] Figure 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, material strip; 70, workpiece; 71, first area; 72, second area; 73, first position; 74, second position; 75, substrate; 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; 151, first groove; 160, second punch; 200, second die assembly Part; 201, lifting pin; 210, second die base; 220, supporting member; 221, reference surface; 222, supporting surface; 230, first slider; 231, main body; 231a, side push surface; 232, side push portion; 233, hollow area; 240, template; 241, accommodating cavity; 242, first cavity; 243, second cavity; 251, first elastic member; 252, push rod; 253, second elastic member; 254, connecting rod; 260, third elastic member; 270, second slider; 271, accommodating groove; 281, first punch; 282, supporting portion; 290, second die; 291, second groove; S1, mold closing direction; S2, side push direction; S3, feeding direction. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply 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 this application.

[0031] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0032] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, 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 embodiment.

[0035] See Figure 1 and Figure 2 , Figure 1 FIG1 shows an axonometric diagram of a stamping die provided in an embodiment of the present application. Figure 2 for Figure 1An exploded schematic diagram of the stamping die shown. The stamping die 10 provided in one embodiment of the present application includes a first die assembly 100 and a second die assembly 200. The first die assembly 100 and the second die assembly 200 can perform opening and closing movements to stamp the material strip. When the first die assembly 100 and the second die assembly 200 are opened, there is a certain interval between the two, and the feed belt moves along the feeding direction S3, so that different areas on the material strip are subjected to stamping processing. When the first die assembly 100 and the second die assembly 200 are closed, the components of the two can squeeze the expected area on the material strip, causing the physical structure in the area to deform and have the expected shape (that is, the initial form of the workpiece). As one example, the first die assembly 100 can be configured as an upper die, and the second die assembly 200 can be configured as a lower die. At this time, the first die assembly 100 actively presses down to perform the closing action. Of course, the first mold assembly 100 is not limited to being configured as an upper mold, and is not limited to being configured to actively press down. The second mold assembly 200 is not limited to being configured as a lower mold. It can be adjusted accordingly according to actual needs and will not be elaborated here.

[0036] See also Figure 3 , Figure 3 A side view of an exemplary workpiece provided in one embodiment of the present application. The workpiece 70 has a first area 71 and a second area 72, and the stamping die 10 is expected to be able to bend the first area 71 relative to the second area 72 by stamping. For traditional stamping dies, an upper die mechanism is usually used to press down the first area 71, and the first area 71 can be folded relative to the second area 72 after being stamped. However, when a traditional stamping die is stamping the workpiece 70 from top to bottom, it is limited by the obstruction of the connecting portion between the first area 71 and the second area 72, and it can only bend the first area 71 to the first position 73 at most, achieving a bend of approximately 90°. When the workpiece 70 is required to bend the first area 71 to the second position 74 and perform a bending process at a larger angle, the traditional stamping die cannot achieve this. The stamping die 10 provided in each embodiment of the present application can bend the workpiece 70 at a larger angle to meet the stamping requirements.

[0037] See also Figure 5 , combined with 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 be pressed down to close the mold 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. The support member 220 and the first slider 230 are both disposed on the second mold base 210. The support member 220 is elastically and movably disposed 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. The reference surface 221 is located on the side closest to the first slider 230 in the lateral thrust direction S2. The reference surface 221 is inclined relative to the support surface 222. The lateral thrust direction S2 intersects the mold closing direction S1. When the first mold assembly 100 and the second mold assembly 200 are closed, 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 closed, the first slider 230 is driven by the first wedge 120 to move in the lateral thrust direction S2, pushing the portion of the workpiece 70 to be folded (i.e., the first region 71 and the first arm portion 76, described below) against the reference surface 221.

[0038] In the above-mentioned stamping die 10, the support member 220 has a support surface 222, and the support surface 222 faces the first die assembly 100. When the first die assembly 100 and the second die assembly 200 are clamped, 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. And when the die is closed, the first slider 230 can be driven by the first wedge block 120 to move along the side push direction S2 to push the part of the workpiece 70 to be folded to 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 that is roughly the same as the area of ​​the workpiece 70 that does not need to be bent. In other words, in this embodiment, the first slider 230 is driven to push the portion of the workpiece 70 to be bent, causing it to conform to the inclined reference surface 221, thereby bending the workpiece 70 to the desired angle. Furthermore, the lateral pushing direction S2 is inclined relative to the mold clamping direction S1. Compared to stamping and bending along the mold clamping direction S1, lateral pushing and bending along the lateral pushing direction S2 can achieve a greater bending angle at the portion of the workpiece 70 to be bent.

[0039] Furthermore, the support member 220 is elastically movable along the mold closing direction S1 and penetrates the second mold base 210. That is, the support member 220 can elastically extend outward from the second mold base 210, and can elastically retract and abut the first mold assembly 100 under the downward pressure of the first mold assembly 100. Therefore, whether the mold is opened or closed, the support member 220 can always be roughly maintained in the position where the support surface 222 cooperates with the first mold assembly 100 to clamp the workpiece 70, that is, the support member 220 can always be maintained 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 slide 230 pushing the workpiece 70 to bend. Therefore, the support member 220 is configured to always be roughly in an elastically raised state, so that the support member 220 is always in a position where its reference surface 221 can cooperate with the first slide 230 to jointly bend the workpiece 70, thereby providing a stable bending reference.

[0040] It should be noted that before being pushed by the first slider 230, the portion of the workpiece 70 to be bent (hereinafter referred to as the first region 71) may have a certain pre-bend, allowing the first slider 230 to act on the side of the first region 71 originally facing the first die assembly 100 to push the workpiece 70 to bend. As one example, this pre-bend can be established by pre-processing 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 amplitude can also be formed by punching the stamping die 10 provided in each embodiment of the present application. In this case, the stamping die 10 can be configured as a continuous stamping die 10. The stamping die 10 can be used to stamp the flat material strip 60 (such as Figure 6 and Figure 7 As shown in FIG, continuous stamping is performed so that workpieces 70 with the expected structure are formed in multiple areas on the material strip 60. In this embodiment, the stamping die 10 may have a cutting group, a bending group and a folding group, and the number of the three groups is multiple. Among them, the cutting group can cut the material strip 60 to remove the material in the excess area on the material strip 60, so that the physical structure in each area on the material strip 60 has the preliminary shape of the workpiece 70. The bending group can bend various parts of the workpiece 70 to bend the workpiece 70. The folding group can bend the workpiece 70 at a larger angle to meet the shape requirements of the workpiece 70. As mentioned above, the first wedge block 120, the support member 220 and the first slider 230 can be the first folding group.

[0042] It should be noted that the embodiments of the present application are described using as an example a stamping die 10 capable of performing a complete stamping process on a material strip 60, such that each region of the material strip 60 can directly form the final structure of a workpiece 70. In other embodiments, the stamping die 10 may include only some of the stamping stations, which also fall within the scope of protection of the present application and will not be described in detail in the embodiments.

[0043] See also Figure 6 and Figure 7 In one embodiment, the extension direction of the material belt 60 is the same as the above-mentioned feeding direction S3. The material belt 60 can be driven by a feeder (not shown, the same below) to move relative to the stamping die 10, so that its various regions are respectively moved to various stations of the stamping die 10. It can be understood that the multiple stations include a cutting station 20, and the cutting group corresponds to the cutting station 20, and is used to cut the workpiece 70 located at the cutting station 20. The multiple stations include a bending station 30, and the bending group corresponds to the bending station 30, and is used to bend the workpiece 70 located at the bending station 30. The multiple stations include a folding station 40, and the folding group corresponds to the folding station 40, and is 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 material strip 60 passes through the five cutting stations 20 along the feed direction S3, it is cut by each cutting group to remove corresponding areas of the material strip 60, thereby forming the preliminary shape of the workpiece 70. It should be noted that each cutting station 20 (particularly the cutting stations 20 located relatively downstream) can also simultaneously perform relatively small-angle bending on the workpiece 70.

[0045] The stamping die 10 may include two bending groups, each corresponding to two bending stations 30. When the material strip 60 passes through the two bending stations 30 along the feeding direction S3, it is bent by each bending group, so that the workpiece 70 is bent. For the two bending groups, they can bend different areas of the workpiece 70 respectively. For example, Figure 7 The workpiece 70 includes a base plate 75, a first arm portion 76 and a second arm portion 77. The two bending groups bend different arms of the workpiece 70 step by step to reduce the risk of the workpiece 70 breaking during synchronous bending. Figure 6 and Figure 7 As shown, as one example, one of the bending groups can flip the first arm portion 76 from a horizontal position to vertically upward or downward along the mold closing direction S1; and another bending group can flip the second arm portion 77 from a horizontal position to vertically downward or upward along the mold closing direction S1.

[0046] The stamping die 10 may include two folding groups, each corresponding to two folding stations 40. When the material strip 60 passes through the two folding stations 40 along the feeding direction S3, it is bent by each folding group, so that the workpiece 70 is folded. As one example, the two folding groups can perform step-by-step large-angle bending processing 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 first arm portion 76 until a portion of the first arm portion 76 is in contact with the substrate 75. That is, with the cooperation of the bending assembly and the folding assembly, the first arm portion 76 can be gradually folded 180° from a coplanar position with the substrate 75 to a position where it is in contact with the substrate 75 in the opposite direction. Alternatively, the two folding assemblies can fold the first arm portion 76 and the second arm portion 77 separately.

[0047] Please refer 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 is used to contact the second mold assembly 200 to compress the material strip 60, thereby reducing the risk of the material strip 60 shifting under pressure during the stamping process. 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. Furthermore, the first mold base 110 is located on the side of the stripper plate 130 facing away from the second mold assembly 200, and the first wedge block 120 is connected to the first mold base 110 and passes through the stripper plate 130 and extends outward from the stripper plate 130. Therefore, after mold closing, the first wedge block 120 can extend into the second mold assembly 200 and drive the first slider 230 to move laterally.

[0048] See also Figure 4 , combined with Figure 2 In one embodiment, the second mold assembly 200 further includes a floating pin 201, which is elastically movable on the second mold base 210 along the mold closing direction S1. After the first mold assembly 100 and the second mold assembly 200 are opened, 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 material strip 60 is suspended relative to the main part of the second mold assembly 200 after the mold is opened, thereby reducing the risk of interference and collision between the material strip 60 and the main part of the second mold assembly 200 during the feeding process along the feeding direction S3. In other words, such a setting can improve the smoothness of the movement of the material strip 60. After the first mold assembly 100 and the second mold assembly 200 are opened, the stripper plate 130 and the first mold base 110 have a preset distance, and the preset distance can be less than or equal to the preset distance.

[0049] Furthermore, the second mold assembly 200 includes a template 240, which contacts the first mold assembly 100 during mold closing. Specifically, when the first and second mold assemblies 100 and 200 are closed, the template 240 and the stripper plate 130 clamp the strip 60, improving the positional stability of the strip 60. Lifting pins 201 are used to push against the strip 60 after mold opening, suspending it relative to the template 240 and improving the smoothness of the strip 60's feed motion.

[0050] See also Figures 1 to 4 In one embodiment, the side push direction S2 may be perpendicular to the mold closing direction S1. Furthermore, the feeding direction S3, the side push direction S2, and the mold closing direction S1 are perpendicular to each other. The material strip 60 may be parallel to the plane defined by the feeding direction S3 and the side push direction S2.

[0051] Please refer 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. 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 when the mold is closed, the first elastic member 251 is compressed and accumulates elastic potential energy. After the mold is opened, the first elastic member 251 can push the support member 220 upward along with the first mold assembly 100, allowing the support member 220 to always move with the workpiece 70. As a result, the reference surface 221 always maintains a substantially fixed position relative to the workpiece 70, providing a reference for the bending action of the first slider 230.

[0052] See also 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 the second mold base 210, while the other end penetrates the template 240 and abuts 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, allowing it to stably push the first arm 76, causing it to bend. Furthermore, the second mold assembly 200 can also include a push rod 252. The push rod 252 is arranged between the first elastic member 251 and the support member 220, with its two ends respectively abutting the first elastic member 251 and the support member 220 to transmit the elastic force. In this case, the first elastic member 251 can be completely distributed within the first mold base 110.

[0053] See also 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. The support member 220 is disposed in the first cavity 242. The cavity wall of the first cavity 242 can guide the elastic floating movement of the support member 220, thereby improving the stability of the movement of the support member 220. The first slider 230 is disposed in the second cavity 243. The cavity wall of the second cavity 243 can guide the lateral push movement of the first slider 230, thereby improving the stability of the movement of the first slider 230.

[0054] See also Figure 5In one embodiment, the first slider 230 includes a main body 231 and a side thrust portion 232. The side thrust portion 232 is disposed on the side of the main body 231 proximal to the support member 220. The side thrust portion 232 is configured to abut 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 area on the side of the side thrust portion 232 facing away from the first mold assembly 100 along the mold clamping 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 distal from the base plate 75, i.e., the non-bending area of ​​the first arm 76. Therefore, configuring the first slider 230 with the hollowed-out area 233 avoids the non-bending area of ​​the first arm 76, preventing any molded structures within this area from being affected by the side thrust bending. It is understood that because 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 block 120 and the first slider 230 may have mutually matching inclined surfaces, so that when the mold is closed, the first wedge block 120 can drive the first slider 230 to approach the support member 220 along the lateral pushing direction S2 through the inclined surface cooperation.

[0056] See also Figure 5 Combined Figure 4 Furthermore, the first wedge 120 has a driving surface 121. As it approaches the side of the support member 220 along the lateral pushing direction S2, the driving surface 121 gradually tilts away from the second mold assembly 200. The main body 231 has a lateral pushing surface 231a in an area away from the lateral pushing portion 232. The lateral pushing surface 231a faces the first mold assembly 100. As it approaches the support member 220 along the lateral pushing direction S2, the lateral pushing surface 231a gradually tilts toward the first mold assembly 100. Thus, during the mold closing process, the driving surface 121 abuts against the lateral pushing surface 231a, thereby driving the first slider 230 toward the support member 220.

[0057] See also Figure 4 In one embodiment, the second mold assembly 200 further includes a second elastic member 253, which extends along the lateral pushing direction S2 and connects the mold plate 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 pushing and bending of the first arm portion 76 at different areas of the material strip 60.

[0058] Furthermore, the second mold assembly 200 further includes a connecting rod 254, one end of which is located outside the mold plate 240, and the other end of which is disposed within the accommodating cavity 241 and connected to the first slider 230. A second elastic member 253 has one end connected to the end of the connecting rod 254 located outside the mold plate 240, and the other end abuts the side of the mold plate 240 facing away from the first slider 230, so as to be compressed when the first slider 230 moves toward the support member 220.

[0059] It is understood that, as previously described, the first wedge 120, the support member 220, and the first slider 230 constitute a first folding assembly. Under the support of the reference surface 221 of the support member 220, the folded first arm portion 76 can be folded to a desired angle relative to the substrate 75. Furthermore, another folding assembly can be configured to further fold the first arm portion 76, allowing a portion of the first arm portion 76 to conform to the substrate 75.

[0060] See also Figure 8 In one embodiment, the first mold assembly 100 further includes a second wedge 140 connected to the first mold base 110 to perform the downward pressing and closing operation along 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 second slider 270 has a receiving groove 271 on the side facing the first mold assembly 100. It is understood that when the second mold assembly 200 includes a mold plate 240, the second slider 270 can be embedded in the mold plate 240.

[0061] When the first mold assembly 100 and the second mold assembly 200 are closed, the bottom wall of the accommodating groove 271 is separated from the first mold assembly 100 to form a molding cavity. The second slider 270 is driven by the second wedge block 140 to move along the side push direction S2 to push the workpiece 70, so that the workpiece 70 is folded and accommodated in the molding cavity. The second wedge block 140 and the second slider 270 form a second folding group. The second folding group is located on the downstream side of the first folding group to further fold the first arm portion 76 after being 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 group, the second mold assembly 200 also includes a third elastic member 260, which is connected between the second slider 270 and the template 240. The third elastic member 260 is compressed when the second slider 270 is driven to move along the side push direction S2. After the driving force is removed, the third elastic member 260 drives the second elastic member 253 to reset.

[0063] See also Figure 9 and Figure 10In one embodiment, each bending group can be configured to have similar components. As one example, the bending group includes a punch and a die. One of the punch and the die is located on the first die holder 110, and the other is located on the second die holder 210. Therefore, the two can move relative to each other during mold closing. The die has a groove, and the punch is aligned with the groove along the mold closing direction S1. After mold closing, the punch can extend into the groove to cooperate with the groove to support the pressurized workpiece 70, giving the workpiece 70 the desired shape.

[0064] It is easy to understand that for each bending group, by adjusting the distribution position and specific shape of the punch and the groove, the strip 60 can be punched and bent into different shapes, which will not be described in detail here.

[0065] See also Figure 9 In one embodiment, the first mold assembly 100 includes a first die 150, which is disposed on the first mold base 110 and has a first groove 151. The second mold assembly 200 includes a first punch 281 and a supporting portion 282. The first punch 281 is disposed on the second mold base 210 and is aligned with the first groove 151 along the mold closing direction S1. Therefore, after the mold is closed, 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 to give it a 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. The first punch 281 can, together with the groove wall of the first groove 151, support the second arm portion 77 to give it a desired bent state.

[0066] Furthermore, the supporting portion 282 is sleeved on at least a portion of the area outside the first punch 281, and the supporting portion 282 can be elastically movably arranged on the second die base 210 along the mold closing direction S1, and the supporting portion 282 and the first mold assembly 100 jointly support the workpiece 70. Similar to the support member 220, the supporting portion 282 can support the workpiece 70 after the mold is closed, so that the area of ​​the workpiece 70 that does not need to be bent remains stable, so that the workpiece 70 is accurately stamped into the expected bending state. Among them, the supporting portion 282 can support the workpiece 70 together with the stripper plate 130. It is easy to understand that the first die 150, the first punch 281 and the supporting portion 282 are one of the bending groups, for example, they can be recorded as the first bending group, and the first bending group can be used to bend the second arm portion 77. As shown in FIG. 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 an independent component.

[0067] See also Figure 10 In one embodiment, the second mold assembly 200 includes a second die 290 disposed on the second mold base 210 and having 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, together with the groove wall of the second groove 291, clamp a local area of ​​the workpiece 70 to a desired shape. For example, the second punch 160 can cooperate with the second die 290 to initially bend the first arm portion 76, giving it the pre-bend described above, thereby facilitating the first slider 230's action on the side of the first region 71 originally facing the first mold assembly 100. When the mold is closed, the second punch 160 can push the first arm 76 into the second groove 291. The second punch 160 and the groove wall of the second groove 291 can jointly support the first arm 76 to give it a desired shape. The second punch 160 and the second die 290 can form another bending group, for example, they can be recorded 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 to a pre-bend. The first folding group then further folds the workpiece 70. It is understood that the various embodiments of the present application do not limit the positions of the first and second bending groups, or the first and second folding groups, and can be configured accordingly based on specific needs.

[0068] It should be noted that the upstream mentioned in each embodiment of the present application refers to the position that the material belt 60 passes first along the feeding direction S3; the downstream, on the contrary, refers to the position that the material belt 60 passes later along the feeding direction S3.

[0069] Combine 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 and formed, the workpiece 70 is conveyed along the feeding direction S3 to the cutting group corresponding to the workpiece 70. The cutting group can cut the connection between the workpiece 70 and other areas of the material strip 60, so that the workpiece 70 is separated from the material strip 60.

[0070] The stamping die 10 provided in each embodiment of the present application may further include common components in the die, such as a pad and a guide column, which will not be described in detail here.

[0071] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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 above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A stamping die, characterized in that: The stamping die comprises: a first mold assembly, the first mold assembly comprising a first mold base and a first wedge, the first wedge being connected to the first mold base; a second mold assembly, the second mold assembly comprising a second mold base, a support member, and a first slider, the support member being elastically movable through the second mold base along a mold closing direction, the first slider being movably embedded in the second mold base along a side-pushing direction, and spaced apart from the support member along the side-pushing direction, the support member having a supporting surface and a reference surface, the supporting surface facing the first mold assembly, the reference surface being located on a side close to the first slider in the side-pushing direction, the reference surface being inclined relative to the supporting surface, and the side-pushing direction intersecting with the mold closing direction; 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 closing direction, and the first slider is driven by the first wedge block to move along the side push direction to push the part of the workpiece to be folded to the reference surface.

2. The stamping die according to claim 1, characterized in that: The second mold assembly includes a first elastic member, which is elastically abutted between the second mold base and the support member. The first elastic member is elastically compressed when the support member is abutted by the first mold assembly.

3. The stamping die according to claim 2, characterized in that: The second mold assembly also includes a template, which is used to contact the first mold assembly when the mold is closed. The support member is movably inserted into the template. The first slider is movably embedded in the template along the side push direction. One end of the first elastic member abuts the second mold base, and the other end penetrates the template and abuts the support member.

4. The stamping die according to claim 1, wherein: The first sliding block includes a main body and a side pushing portion provided on a side of the main body close to the support member, wherein the side pushing portion is used to abut against the workpiece and bend the workpiece in coordination with the reference surface; At least a portion of the first sliding block located along the mold closing direction on a side of the side pushing portion away from the first mold assembly is hollowed out.

5. The stamping die according to claim 4, characterized in that: The area of ​​the main body away from the side pushing portion has a side pushing surface facing the first mold assembly. In the direction approaching the support member along the side pushing direction, the side pushing surface gradually turns toward the direction approaching the first mold assembly.

6. The stamping die according to claim 4, characterized in that: The second mold assembly further includes a template, the template being used to contact the first mold assembly when the mold is closed, the template having a receiving cavity, the receiving cavity including a first cavity and a second cavity that are interconnected, the support member being disposed in the first cavity, and the first slider being disposed in the second cavity; The second mold assembly further includes a second elastic member, which extends along the side pushing direction and connects the template and the first slider. The second elastic member is compressed when the first slider moves toward the support member.

7. The stamping die according to claim 1, characterized in that: The first mold assembly further includes a second wedge block connected to the first mold base. The second mold assembly further includes a second slider, which is movably embedded in the second mold base along the side push direction. The second slider has a receiving groove on a side facing the first mold assembly. When the first mold assembly and the second mold assembly are closed, the bottom wall of the accommodating groove and the first mold assembly are spaced apart to form a molding cavity, and the second sliding block is driven by the second wedge block to move along the side pushing direction to push the workpiece, so that the workpiece is folded and accommodated in the molding cavity; The first wedge block, the support member and the first sliding block form a first folding group, the second wedge block and the second sliding block form a second folding group, and the second folding group is located on the downstream side of the first folding group.

8. The stamping die according to claim 1, wherein: The stamping die includes multiple bending groups, each of which includes a punch and a die. One of the punch and the die is located on the first die base, and the other is located on the second die base. The die has a groove, and the punch is aligned with the groove along the mold closing direction.

9. The stamping die according to claim 8, characterized in that: The first die assembly includes a first die set on the first die base, the first die having a first groove, and the second die assembly includes a first punch and a supporting portion, the first punch being provided on the second die base and aligned with the first groove along the die closing direction, the supporting portion being sleeved over at least a portion of the outer area of ​​the first punch, the supporting portion being elastically movable on the second die base along the die closing direction, and the supporting portion and the first die assembly jointly supporting the workpiece; The first die, the first punch and the supporting portion form one of the bending groups.

10. The stamping die according to claim 1, wherein: 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 floating lift pin 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 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.

Images