Stamping die and stamping method for special-shaped wiring terminal

Abstract

The invention belongs to the technical field of compression molding, and relates to a stamping die and a stamping method for a special-shaped wiring terminal. The stamping die for the special-shaped wiring terminal comprises a female die, a bottom die and a male die, a concave part is downwards formed in the female die from the top, a first part of the concave part is matched with the surface shape of the curved surface structure of the special-shaped wiring terminal, and a second part of the concave part corresponds to the position of the plane structure of the special-shaped wiring terminal and is downwards concave or downwards penetrates through the female die to form a socket part; the bottom die comprises an inserting part, and the shape of the inserting part is complementary with that of the socket part so that the inserting part can be inserted into the socket part; and the male die is detachably and fixedly connected with the bottom die, so that the unfolding body is fixed between the male die and the bottom die to form a combined body, and the combined body is integrally pressed into or integrally moved out of the female die. According to the stamping die and the stamping method, the unfolded body to be stamped can be positioned and prevented from sliding or shifting, tools are not needed in the demolding process, product deformation is avoided, and the quality of the special-shaped wiring terminal is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of pressing forming, and particularly relates to a stamping die and a stamping method for a special-shaped terminal. Background Art

[0002] The structure of a special-shaped terminal used in an existing product is as Figures 1a - 1c shown. The material of the special-shaped terminal is brass, and it is a part used to connect a cable and a product power connection port. Due to the special installation position, the front end of the terminal adopts a special-shaped curved surface structure that can completely fit the product surface. Also because of the special structure, finished products cannot be directly purchased in the market.

[0003] Currently, the special-shaped terminal is formed by pressing using a molding method. The commonly used pressing die consists of a female die and a male die. The shapes of the female die and the male die are complementary and match the shape of the finished special-shaped terminal. The blank is formed into the structure of the special-shaped terminal by pressing between the female die and the male die.

[0004] However, although the existing conventional pressing method is simple to operate, there are two problems: (1) Since the blank cannot be fully positioned during stamping, the blank is prone to sliding during the stamping process, resulting in skewing of the final product, problems such as uneven end faces and inconsistent lengths of the two wings; (2) After stamping, the formed terminal is difficult to demold (removed from the female die). Using a wedge tool to pry it is likely to deform the product and affect the product quality. Based on the above two problems, it is necessary to improve the pressing forming of the existing special-shaped terminal. Summary of the Invention

[0005] In view of at least one deficiency in the related art, the present invention provides a stamping die and a stamping method for a special-shaped terminal, which can position the blank to be stamped, prevent sliding or displacement, and the demolding process does not require the aid of tools, avoiding product deformation and improving the quality of the special-shaped terminal.

[0006] The first aspect of the present invention provides a stamping die for a special-shaped terminal, which is used to press the blank after blanking of a thin-walled special-shaped terminal into a special-shaped terminal. The special-shaped terminal includes a planar structure and a curved surface structure located on the outer periphery of the planar structure. The curved surface structure bends from the edge of the planar structure to one side. The stamping die includes:

[0007] A female die, which has a recess formed from top down. The first part of the recess matches the surface shape of the curved surface structure of the special-shaped terminal, and the second part of the recess corresponds to the planar structure of the special-shaped terminal and is recessed downward or penetrates downward through the female die to form a socket part;

[0008] The bottom die, the bottom die includes an insertion part, the shape of the insertion part is complementary to the socket part so that the insertion part can be inserted into the socket part. When the insertion part is inserted into the socket part, the top surface of the insertion part and the second part of the recessed part together form a stamping cavity that matches the surface shape of the special-shaped terminal;

[0009] The male die, the bottom surface of the male die is complementary to the shape of the stamping cavity, and the male die is detachably and fixedly connected to the bottom die to fix the unfolded body between the male die and the bottom die to form a combined body and press the combined body into or out of the female die as a whole.

[0010] In the above technical solution, according to the unique structure of the special-shaped terminal, a bottom die and a female die are formed. The bottom die can be fixedly connected to the male die and the unfolded body is fixed between the two to form a combined body. The combined body is pressed into the female die as a whole to realize the positioning of the unfolded body during the pressing process, prevent the unfolded body from sliding and shifting, and improve the stamping quality of the product; when the stamping is completed, the combined body is taken out of the female die as a whole, and the male die and the bottom die are separated to take out the formed special-shaped terminal, without using tools to pry the workpiece, avoiding deformation of the special-shaped terminal and improving the qualification rate of the product.

[0011] In some embodiments of the first aspect, positioning holes are formed on the unfolded body. The top surface of the insertion part of the bottom die is provided with first assembly holes corresponding to the positioning holes, and the male die is provided with second assembly holes corresponding to the first assembly holes. When the unfolded body, the bottom die and the male die form a combined body, the first assembly holes, the positioning holes and the second assembly holes are coaxially arranged for fixed connection through fasteners. In this technical solution, holes are correspondingly formed on the unfolded body, the bottom die and the male die, and they are installed with the cooperation of fasteners, which not only realizes the fixed connection between the male die and the bottom die, but also limits the unfolded body, and can further prevent the unfolded body from shifting.

[0012] In some embodiments of the first aspect, a positioning step is formed on the top surface of the insertion part of the bottom die. The positioning step cooperates with the first assembly hole to limit the unfolded body, so that the first end of the unfolded body is limited at the first assembly hole through the fastener and the edge of the second end of the unfolded body far from the first end is limited at the positioning step. In the technical solution, the two ends of the unfolded body are respectively limited at the first assembly hole and the positioning step, which provides a positioning function for the position of the unfolded body when the unfolded body is placed on the bottom die, and can more accurately position the placement position of the unfolded body to prevent shifting during the stamping process.

[0013] In some embodiments of the first aspect, the bottom die further includes a positioning portion located at the end of the insertion portion away from the unfolded body in the transverse direction. The portions of the positioning portion on both sides of the male die extend upward to form positioning side walls to limit one end of the male die between the two positioning side walls. One side of the female die is open corresponding to the stamping stroke of the bottom die. When the male die is installed, one end of the male die is positioned by aligning the second assembly hole with the first assembly hole, and the other end of the male die is positioned between the two positioning side walls, improving the installation accuracy of the male die, ensuring that the male die does not undergo lateral displacement during the stamping process, enhancing the stability and accuracy of the stamping process, reducing stamping errors, and improving the overall processing efficiency.

[0014] In some embodiments of the first aspect, a third assembly hole is formed between the two positioning side walls of the bottom die, and a fourth assembly hole corresponding to the third assembly hole is formed on the male die. The third assembly hole and the fourth assembly hole are fixedly connected by fasteners. In this technical solution, an assembly hole is further provided at the position between the positioning side walls for further fixed installation, providing a more stable installation solution for the male die and the female die.

[0015] The second aspect of the present application provides a stamping method for a special-shaped terminal. The unfolded body of the special-shaped terminal is stamped and formed by using the stamping die according to any one of the above first aspects. The stamping method includes the following steps:

[0016] Place the unfolded body on the bottom die;

[0017] Install the male die on the bottom die, thereby fixing the unfolded body between the bottom die and the male die to form an assembly;

[0018] Press the assembly as a whole into the female die for stamping and forming;

[0019] Take out the assembly as a whole from the female die;

[0020] Dismantle the male die from the bottom die and take out the formed workpiece.

[0021] In some embodiments of the second aspect, when placing the unfolded body on the bottom die, it further includes the step of positioning the unfolded body: align the positioning hole at the first end of the unfolded body with the first assembly hole on the bottom die, and the edge of the second end of the unfolded body away from the first end abuts against the positioning step.

[0022] In the above technical solution, before stamping, the unfolded body is positioned between the male die and the bottom die by the installation and fixation of the male die and the bottom die to form an assembly. The assembly is pressed into the female die as a whole during the stamping process to prevent the unfolded body from sliding and shifting. After stamping, the assembly is taken out as a whole from the female die, and the male die and the bottom die are separated to take out the workpiece, which is convenient for demolding and improves the quality and qualification rate of the final special-shaped terminal.

[0023] In some embodiments of the second aspect, after the positioning of the unfolded body is completed, the step of installing the male mold on the bottom mold further includes: aligning the second assembly hole of the male mold with the first assembly hole of the bottom mold, and fastening and connecting the combined body by inserting fasteners into the second assembly hole, the positioning hole and the first assembly hole. In this technical solution, both ends of the unfolded body are respectively limited at the first assembly hole and the positioning step, which provides a positioning function for the position of the unfolded body when it is placed on the bottom mold, can more accurately position the placement position of the unfolded body, prevent displacement during the stamping process, and improve the stamping accuracy.

[0024] In some embodiments of the second aspect, the step of installing the male mold on the bottom mold further includes: positioning one end of the male mold between two positioning side walls on the bottom mold, and fastening and connecting the combined body by inserting fasteners into the fourth assembly hole on the male mold and the third assembly hole on the bottom mold. In this technical solution, the positioning side walls provided on the bottom mold can improve the positioning accuracy and efficiency of the male mold, ensure that the male mold does not undergo lateral displacement during the stamping process, and improve the stamping accuracy.

[0025] In some embodiments of the second aspect, during the demolding process, after the combined body is taken out of the female mold as a whole, the fasteners are removed, and the male mold is separated from the bottom mold, and then the formed special-shaped terminal can be obtained. Through the disassembly design of the bottom mold and the male mold, in the demolding process, there is no need to use tools to pry the workpiece, and the workpiece can be taken out only by separating the male mold from the bottom mold, avoiding deformation of the workpiece during the demolding process. The demolding process is simple and efficient and will not cause adverse effects on the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0027] Figure 1a is a perspective view of the special-shaped terminal;

[0028] Figure 1b is a cross-sectional view of the special-shaped terminal;

[0029] Figure 1c is a top view of the special-shaped terminal;

[0030] Figure 2a is a perspective view of the stamping die for the special-shaped terminal provided by an embodiment of the present application;

[0031] Figure 2b is a cross-sectional view of the stamping die for the special-shaped terminal provided by an embodiment of the present application, and the section line is along the longitudinal axis of the unfolded body;

[0032] Figure 2cThe top view of the stamping die for the special-shaped terminal of the present application;

[0033] Figure 3 The exploded view of the stamping die for the special-shaped terminal of the present application;

[0034] Figure 4 The structural schematic diagram of the female die in the stamping die provided by an embodiment of the present application;

[0035] Figure 5a The three-dimensional view of the bottom die in the stamping die provided by an embodiment of the present application;

[0036] Figure 5b The sectional view of the bottom die in the stamping die provided by an embodiment of the present application;

[0037] Figure 5c The top view of the bottom die in the stamping die provided by an embodiment of the present application;

[0038] Figure 6 The three-dimensional view of the male die in the stamping die provided by an embodiment of the present application;

[0039] Figure 7a The sectional view of the combined body formed by the bottom die, the unfolded body and the male die in an embodiment of the present application;

[0040] Figure 7b The top view of the combined body formed by the bottom die, the unfolded body and the male die in an embodiment of the present application;

[0041] Figure 7c The three-dimensional view of the combined body formed by the bottom die, the unfolded body and the male die in an embodiment of the present application.

[0042] In the figure:

[0043] 100, special-shaped terminal; 101, planar structure; 102, curved surface structure; 200, unfolded body of the special-shaped terminal; 201, positioning hole; 300, female die; 310, recessed part; 311, first part of the recessed part; 312, second part of the recessed part; 320, socket part; 400, bottom die; 410, insertion part; 411, first assembly hole; 412, positioning step; 420, positioning part; 421, positioning side wall; 422, third assembly hole; 500, male die; 501, second assembly hole; 502, fourth assembly hole; 600, fastener; 700, combined body. Detailed implementation manners

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0045] In this application, the mention of "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art will explicitly and implicitly understand that the embodiments described in this application may be combined with other embodiments without conflict.

[0046] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0047] The terms "first", "second", "third", "fourth" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include one or more of such features.

[0048] The special-shaped terminal is a part used to connect the power connection port of the cable box product, and it is manufactured by pressing the unfolded body after blanking a thin-walled special-shaped terminal. In particular, Figures 1a - 1c A structural schematic diagram of a special-shaped terminal 100 is provided. The special-shaped terminal 100 includes a planar structure 101 and a curved surface structure 102 located on the outer periphery of the planar structure 101. The curved surface structure 102 bends from the edge of the planar structure 101 to one side, so as to be able to completely fit the product surface. It can be understood that the stamping die and stamping method provided by the present invention may also be applicable to Figures 1a - 1c the stamping process of other types of thin-walled parts other than the special-shaped terminal 100 shown, as long as the surface shape of the thin-walled part can be divided into a planar structure and a curved surface structure, and other adjustments during the conversion process can be achieved within the scope of the prior art or conventional technical means.

[0049] For the special-shaped terminal 100, the present application provides a stamping die for the special-shaped terminal, as Figures 2a - 2c and Figure 3 shown. The stamping die includes a female die 300, a bottom die 400 and a male die 500.

[0050] Further referring to Figure 4 , the female die 300 is formed with a recessed portion 310 from top to bottom. The first part 311 of the recessed portion 310 fits the surface shape of the curved surface structure 102 of the special-shaped terminal 100, and the second part 312 of the recessed portion 310 corresponds to the position of the flat surface structure 101 of the special-shaped terminal 100 and is recessed downward or penetrates downward through the female die 300 to form a socket portion 320;

[0051] Further referring to Figures 5a - 5c , the bottom die 400 includes a fitting portion 410. The shape of the fitting portion 410 is complementary to that of the socket portion 320 so that the fitting portion 410 can be inserted into the socket portion 320; when the fitting portion 410 is inserted into the socket portion 320, the top surface of the fitting portion 410 and the second part 312 of the recessed portion 310 together form a stamping cavity that matches the surface shape of the special-shaped terminal 100;

[0052] Further referring to Figure 6 , the bottom surface of the male die 500 is complementary to the shape of the stamping cavity. The male die 500 is detachably and fixedly connected to the bottom die 400 to fix the unfolded body 200 between the male die 500 and the bottom die 400 to form an assembly 700 and press the assembly 700 as a whole into or out of the female die 300. A schematic structural diagram of the assembly 700 formed by the male die 500, the unfolded body 200 and the bottom die 400 is as Figures 7a - 7c shown.

[0053] For the stamping die provided in the above embodiments of the present application, according to the unique curved surface structure 102 and flat surface structure 101 of the special-shaped terminal 100, the female die structure in the prior art is split. The pressing surfaces of the split female die 300 and bottom die 400 respectively correspond to the curved surface structure 102 and flat surface structure 101 of the special-shaped terminal 100. The bottom die 400 can be fixedly connected to the male die 500 and the unfolded body 200 is fixed between the two to form an assembly 700. The assembly 700 is pressed as a whole into the female die 300 to realize the positioning of the unfolded body 200 during the pressing process, prevent the unfolded body 200 from sliding and shifting, and improve the stamping quality of the product; when the stamping is completed, the assembly 700 is taken out of the female die 300 as a whole, and the male die 500 is detached from the bottom die 400 to realize the demoulding of the special-shaped terminal 100. There is no need to use tools to pry the workpiece, avoiding workpiece deformation. The demoulding process is simple and will not have an adverse impact on the product; through the above two points, the quality and qualification rate of the final special-shaped terminal 100 are improved.

[0054] The stamping die provided by the present application improves the die structure in combination with the unique structure of the special-shaped terminal 100. Through the design of the bottom die 400 and its cooperation with the male die 500 and the female die 300, it can not only improve the stamping quality of the workpiece during the stamping process, but also effectively avoid the influence on the product during the demoulding process. The operation is simple and easy to implement, significantly improving the finished product quality of the special-shaped terminal 100.

[0055] It should be noted that, in the Figures 2a - 3 illustrated embodiment, the female die 300 is penetrated downward at the second part 312 of the recess 310, but it can be understood that the female die 300 can also be recessed downward without penetration at the second part 312 of the recess 310, as long as the insertion part 410 of the bottom die can be inserted.

[0056] In some embodiments, as Figure 3 shown, positioning holes 201 are formed on the unfolded body 200. A first assembly hole 411 is formed on the top surface of the insertion part 410 of the bottom die 400 corresponding to the positioning holes 201, and a second assembly hole 501 is formed on the male die 500 corresponding to the first assembly hole 411. Further referring to Figure 7a , when the unfolded body 200, the bottom die 400 and the male die 500 form a combined body 700, the first assembly hole 411, the positioning holes 201 and the second assembly hole 501 are coaxially arranged for fixed connection through the fastener 600. In this embodiment, holes are correspondingly formed on all of the unfolded body 200, the bottom die 400 and the male die 500. When the three are installed, the fastener 600 is inserted into the second assembly hole 501 of the male die 500, the positioning holes 201 of the unfolded body 200, and the first assembly hole 411 of the bottom die 400 in sequence, not only realizing the fixed connection between the male die 500 and the bottom die 400, but also limiting the unfolded body 200, which can further prevent the unfolded body 200 from shifting.

[0057] In some embodiments, a positioning step 412 is further formed on the top surface of the insertion part 410 of the bottom die 400. The positioning step 412 cooperates with the first assembly hole 411 to limit the unfolded body 200, so that the first end of the unfolded body 200 is limited at the first assembly hole 411 through the fastener 600 and the edge of the second end of the unfolded body 200 away from the first end is limited at the positioning step 412. In this embodiment, the two ends of the unfolded body 200 are respectively limited at the first assembly hole 411 and the positioning step 412, providing a positioning function for the position of the unfolded body 200 when the unfolded body 200 is placed on the bottom die 400, and can more accurately position the placement position of the unfolded body 200 to prevent shifting during the stamping process.

[0058] In the above embodiments, when the two longitudinal edges of the special-shaped terminal 100 are respectively an arc surface and a flat surface, the first assembly hole 411 on the bottom die 400 is arranged corresponding to the position of the arc surface, and the hole structure is used for limiting. The positioning step 412 on the bottom die 400 is arranged corresponding to the position of the flat surface end, so that the edge of the flat surface can abut against the positioning step to form a stable limiting relationship.

[0059] In some embodiments, as Figures 5a - 5c and Figures 7a - 7c shown, the bottom die 400 further includes a positioning portion 420. The positioning portion 420 is located at the end of the insertion portion 410 away from the unfolded body 200 in the transverse direction. The portions of the positioning portion 420 on both sides of the male die 500 extend upward to form positioning side walls 421, so as to limit one end of the male die 500 between the two positioning side walls 421. One side of the female die 300 is open corresponding to the stamping stroke of the bottom die 400 to avoid interference caused by the downward displacement of the positioning portion 420 with the insertion portion 410 during the stamping process of the bottom die 400. In the solution of this embodiment, the bottom die 400 is provided with the positioning portion 420 and the positioning side walls 421 are added to the positioning portion 420, which enhances the positioning accuracy of the male die 500. When the male die 500 is installed, one end of the male die 500 is positioned by aligning the second assembly hole 501 with the first assembly hole 411, and the other end of the male die 500 is positioned between the two positioning side walls 421, improving the installation accuracy of the male die 500, ensuring that the male die 500 will not have a lateral displacement during the stamping process, improving the stability and accuracy of the stamping process, reducing stamping errors, and enhancing the overall processing efficiency.

[0060] In some embodiments, further referring to Figures 5a - 6 , a third assembly hole 422 is formed between the two positioning side walls 421 of the bottom die 400, and a fourth assembly hole 502 is formed on the male die 500 corresponding to the third assembly hole 422. The third assembly hole 422 and the fourth assembly hole 502 are fixedly connected by a fastener 600. In this embodiment, on the basis that the male die 500 and the bottom die 400 are aligned and fixed through the first assembly hole 411 and the second assembly hole 501, a scheme for aligning and installing the male die 500 and the female die 300 through the third assembly hole 422 and the fourth assembly hole 502 is added at another position. The alignment and fixed installation at two different positions provide a more stable installation scheme for the male die 500 and the female die 300.

[0061] The present application also provides a stamping method for a special-shaped terminal, and the unfolded body 200 of the special-shaped terminal 100 is stamped and formed by using the stamping die described in any one of the above embodiments. The stamping method includes the following steps:

[0062] Place the unfolded body 200 on the bottom die 400;

[0063] Install the male mold 500 on the bottom mold 400, thereby fixing the unfolded body 200 between the bottom mold 400 and the male mold 500 to form an assembled body 700;

[0064] Press the assembled body 700 as a whole into the female mold 300 for stamping;

[0065] Take out the assembled body 700 from the female mold 300 as a whole;

[0066] Detach the male mold 500 from the bottom mold 400 and take out the formed workpiece.

[0067] In the stamping method provided in the above embodiments, by applying the stamping die for the special-shaped terminal, before stamping, first fix the unfolded body 200 between the male mold 500 and the bottom mold 400 by the installation and fixation of the male mold 500 and the bottom mold 400 to form the assembled body 700, realizing the positioning of the unfolded body 200. The assembled body 700 is pressed into the female mold 300 as a whole during the stamping process to prevent the unfolded body 200 from sliding and shifting. After stamping, the assembled body 700 is removed from the female mold 300 as a whole. When separating the male mold 500 and the bottom mold 400, the formed special-shaped terminal 100 can be taken out, which is convenient for demolding, avoids workpiece deformation, and improves the quality and qualification rate of the final special-shaped terminal 100.

[0068] In some embodiments, when placing the unfolded body 200 on the bottom mold 400, it further includes a step of positioning the unfolded body 200: align the positioning hole 201 at the first end of the unfolded body 200 with the first assembly hole 411 on the bottom mold 400, and the edge of the second end of the unfolded body 200 far from the first end abuts against the positioning step 412. In this embodiment, the two ends of the unfolded body 200 are respectively limited at the first assembly hole 411 and the positioning step 412, providing a positioning function for the position of the unfolded body 200 when the unfolded body 200 is placed on the bottom mold 400, reducing the human operation error, enabling more accurate positioning of the placement position of the unfolded body 200, preventing displacement during the stamping process, and improving the stamping accuracy.

[0069] In some embodiments, after the positioning of the unfolded body 200 is completed, the step of installing the male mold 500 on the bottom mold 400 further includes: align the second assembly hole 501 of the male mold 500 with the first assembly hole 411 of the bottom mold 400, and insert the fastener 600 into the second assembly hole 501, the positioning hole 201 and the first assembly hole 411 to tightly connect the assembled body 700. By sequentially inserting the fastener 600 into the second assembly hole 501 of the male mold 500, the positioning hole 201 of the unfolded body 200 and the first assembly hole 411 of the bottom mold 400, not only realizes the fixed connection between the male mold 500 and the bottom mold 400, but also limits the unfolded body 200, which can further prevent the unfolded body 200 from shifting.

[0070] In some embodiments, the step of installing the male mold 500 on the female mold 400 further includes: positioning one end of the male mold 500 between two positioning side walls 421 on the female mold 400, and tightly connecting the assembly 700 by inserting a fastener 600 into the fourth assembly hole 502 on the male mold 500 and the third assembly hole 422 on the female mold 400. In the solution of this embodiment, when the male mold 500 is installed, one end of the male mold 500 is aligned with the first assembly hole 411 through the second assembly hole 501 for positioning, and the other end of the male mold 500 is positioned between the two positioning side walls 421, improving the installation accuracy and assembly efficiency of the male mold 500, ensuring that the male mold 500 will not have a lateral displacement during the stamping process, improving the stability and accuracy of the stamping process, reducing stamping errors, and enhancing the overall processing efficiency.

[0071] In some embodiments, during the demolding process, after the assembly 700 is integrally taken out of the female mold 300, the fastener 600 is removed, and the male mold 500 is separated from the female mold 400, then the formed special-shaped terminal 100 can be obtained. In this solution, through the design of the female mold 400 in cooperation with the male mold 500, during the demolding process, there is no need to use tools to pry the workpiece. Just separating the male mold 500 from the female mold 400 can take out the workpiece, avoiding deformation of the workpiece during the demolding process. The demolding process is simple and efficient and will not cause adverse effects on the product.

[0072] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and the key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: still modifications can be made to the specific implementation manners of the present invention or equivalent replacements can be made to some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A stamping die for a special-shaped terminal, used for pressing a thin-walled special-shaped terminal after blanking into the special-shaped terminal, wherein the special-shaped terminal comprises a plane structure and a curved surface structure located at the periphery of the plane structure, wherein the curved surface structure is bent to one side from the edge of the plane structure, and characterized in that: The stamping die comprises: A female mold, wherein a recessed portion is formed downward from the top of the female mold, a first portion of the recessed portion matches the surface shape of the curved surface structure of the special-shaped terminal, and a second portion of the recessed portion corresponds to the position of the planar structure of the special-shaped terminal and is recessed downward or passes through the female mold downward to form a socket portion; A bottom die, the bottom die comprising an inserting portion, the shape of the inserting portion being complementary to the socket portion so that the inserting portion is inserted into the socket portion, and when the inserting portion is inserted into the socket portion, the top surface of the inserting portion and the second portion of the recessed portion together form a stamping cavity matching the surface shape of the special-shaped terminal; A male mold, the bottom surface of which is complementary to the shape of the stamping cavity, and the male mold is detachably fixedly connected to the bottom mold so as to fix the unfolded body between the male mold and the bottom mold to form a combination and to press the combination as a whole into or move it out of the female mold as a whole.

2. The stamping die for the special-shaped terminal according to claim 1, characterized in that: A positioning hole is formed on the unfolded body, a first assembly hole is formed on the top surface of the insertion portion of the bottom mold corresponding to the positioning hole, and a second assembly hole is formed on the male mold corresponding to the first assembly hole. When the unfolded body, the bottom mold and the male mold form the combined body, the first assembly hole, the positioning hole and the second assembly hole are coaxially arranged to be fixedly connected by fasteners.

3. The stamping die for the special-shaped terminal according to claim 2, characterized in that: A positioning step is formed on the top surface of the insertion portion of the bottom mold, and the positioning step cooperates with the first assembly hole to limit the unfolded body, so that the first end of the unfolded body is limited to the first assembly hole through the fastener and the edge of the second end of the unfolded body away from the first end is limited to the positioning step.

4. The stamping die for the special-shaped terminal according to claim 1, characterized in that: The bottom mold also includes a positioning portion, which is located at one end of the insertion portion that is laterally away from the unfolded body. The portions of the positioning portion located on both sides of the male mold extend upward to form positioning side walls to limit one end of the male mold between the two positioning side walls. One side of the female mold is open corresponding to the stamping stroke of the bottom mold.

5. The stamping die for the special-shaped terminal according to claim 4, characterized in that: A third assembly hole is formed between the two positioning side walls of the bottom mold, and a fourth assembly hole is formed on the male mold corresponding to the third assembly hole. The third assembly hole and the fourth assembly hole are fastened and connected by fasteners.

6. A method for stamping a special-shaped terminal, characterized in that: The expanded body of the special-shaped terminal is stamped and formed by using the stamping die according to any one of claims 1 to 5, and the stamping method comprises the following steps: placing the developed body on the bottom mold; The male mold is mounted on the bottom mold, so that the developed body is fixed between the bottom mold and the male mold to form a combined body; Pressing the assembly as a whole into the female die for stamping; Taking the assembly out of the female mold as a whole; The male mold is disassembled from the base mold to take out the formed workpiece.

7. The punching method according to claim 6, characterized in that: When placing the unfolded body on the bottom mold, the step of positioning the unfolded body is also included: aligning the positioning hole at the first end of the unfolded body with the first assembly hole on the bottom mold, and the edge of the second end of the unfolded body away from the first end abuts against the positioning step.

8. The punching method according to claim 7, characterized in that: After the unfolded body is positioned, the step of installing the male mold on the base mold also includes: aligning the second assembly hole of the male mold with the first assembly hole of the base mold, and fastening the combination by inserting a fastener into the second assembly hole, the positioning hole and the first assembly hole.

9. The stamping method according to claim 8, characterized in that: The step of installing the male mold on the base mold also includes: positioning one end of the male mold between the two positioning side walls on the base mold, and fastening the combination by inserting a fastener into the fourth assembly hole on the male mold and the third assembly hole on the base mold.

10. The punching method according to claim 9, characterized in that: During the demoulding process, after the assembly is taken out from the female mold as a whole, the fasteners are removed, and the male mold is separated from the bottom mold to obtain the molded special-shaped terminal.

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