Punching and drawing process for shielding case

Abstract

The invention relates to the technical field of shielding case production, and particularly discloses a shielding case punching and stretching process which specifically comprises the following steps: S1, punching material pulling holes in the upper side and the lower side of a material belt, and punching an upper vacancy and a lower vacancy corresponding to a product in the upper side and the lower side of the material belt; s2, punching a left vacancy and a right vacancy corresponding to the product on the left side and the right side of the material belt to form an initial blank; s3, a small hole and a first empty groove are punched in the corresponding positions of the initial blank; s4, a second empty groove with a tooth edge is punched in the corresponding position of the initial blank; s5, stamping and stretching the initial blank to form a secondary finished product with a frame on the periphery of the initial blank; according to the punching and stretching process, the structure is simple, the production input cost of an enterprise is reduced, punching and stretching can be conducted on the shielding case through continuous work of the continuous die, the working efficiency is high, product strain can be avoided during subsequent punching and discharging, and the product quality is improved. Therefore, the final finished product quality can be effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of shielding cover manufacturing technology, and specifically discloses a shielding cover punching and stretching process. Background Technology

[0002] In existing industrial technologies, many hardware products are made from metal materials, and the forming processes are diverse. Among them, the production of sheet metal through multi-station cold stamping progressive dies involving shearing, bending, and stretching is widely used. Hardware parts produced by stamping progressive dies have advantages such as high precision, strong stability, high production efficiency, and low cost, such as mobile phone SIM card trays, signal shielding covers for electronic components, and communication connectors. In the production of some fully enclosed shielding covers, the stretching process is an indispensable forming process.

[0003] Existing shielded punching and stretching dies are generally designed to be quite complex, which increases the production cost of enterprises, cannot guarantee work efficiency, and is prone to tearing when punching and cutting finished parts in the later stage, thus failing to protect the quality of the produced products.

[0004] To address the aforementioned issues, this application discloses a punching and stretching process for shielding covers. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, this invention discloses a punching and stretching process for shielding covers.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a shielding cover punching and stretching process, specifically including the following steps:

[0007] S1. Punch out material pulling holes on the upper and lower sides of the strip and punch out upper and lower openings corresponding to the product on the upper and lower sides of the strip.

[0008] S2. Punch out the left and right blanks corresponding to the products on the left and right sides of the strip to form the initial blank;

[0009] S3. Punch out small holes and the first slot at the corresponding positions in the initial blank;

[0010] S4. Punch out a second slot with teeth at the corresponding position in the initial blank;

[0011] S5. Stamp and stretch the initial blank to form a sub-finished part with a border around its perimeter;

[0012] S6. Punch the scrap material from the sub-finished parts to form the final finished parts.

[0013] As a preferred embodiment of this application, the distance between the material pulling holes is 50 mm.

[0014] As a preferred embodiment of this application, the edge material of the sub-finished part in step S5 is provided with several punching and tearing openings.

[0015] As a preferred embodiment of this application, the number of small holes formed in step S3 is 2, and the number of first empty slots formed is 3.

[0016] As a preferred embodiment of this application, the number of second empty slots formed in step S4 is three.

[0017] As a preferred embodiment of this application, there is a 2mm gap between the tooth edge and one side of the second cavity.

[0018] The present invention achieves the following beneficial effects:

[0019] The punching and stretching process provided in this application has a relatively simple structure, which reduces the production input cost of enterprises. The shield can be punched and stretched through continuous operation of the continuous die, which has high work efficiency. Furthermore, it can avoid product damage during subsequent punching and blanking, thereby effectively ensuring the quality of the final product.

[0020] Other features and advantages of the invention will be set forth in the following description and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the disclosure of this invention and, together with the description, serve to explain the principles of this disclosure.

[0022] Figure 1 This is a schematic diagram of the finished product structure disclosed in this invention;

[0023] Figure 2 This is a schematic diagram of the stamping steps disclosed in this invention;

[0024] In the diagram: 10, material pulling hole; 20, upper hole position; 30, lower empty position; 40, left empty position; 50, right empty position; 60, initial blank; 601, sub-finished part; 602, edge material; 61, small hole; 62, first empty groove; 63, second empty groove; 631, tooth edge. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0027] Example

[0028] To address the problems of complex structures in existing punching and stretching processes for shielding covers, which are prone to subsequent punching and cutting damage and fail to protect the quality of the manufactured products, this paper refers to... Figure 1 and Figure 2 As shown, this application discloses a punching and stretching process for a shielding cover, specifically including the following steps:

[0029] S1. Punch out material pulling holes 10 on the upper and lower sides of the strip (the distance between the material pulling holes 10 is 50mm). Punch out upper empty space 20 and lower empty space 30 on the upper and lower sides of the strip corresponding to the product. The material punched out of upper empty space 20 and lower empty space 30 is waste material and is not part of the final product.

[0030] S2. Punch out the left blank 40 and right blank 50 on the left and right sides of the strip to form the initial blank 60. The materials punched out from the left blank 40 and right blank 50 are waste materials and are not part of the final product. The subsequent stamping and stretching are carried out on the initial blank 60.

[0031] S3. Punch out small holes 61 and first slots 62 at the corresponding positions in the initial blank 60 (there are 2 small holes 61 and 3 first slots 62).

[0032] S4. Punch out a second slot 63 with a toothed edge 631 at the corresponding position of the initial blank 60 (there are three second slots 63, and there is a 2mm gap between the toothed edge 631 and one side of the second slot 63).

[0033] S5. The initial blank 60 is stamped and stretched to form a sub-finished part 601 with a border around its perimeter.

[0034] S6. Punch-cut the scrap material 602 of the sub-finished part 601 to form the final finished part;

[0035] In addition, in a preferred embodiment, the edge material 602 of the sub-finished part 601 in step S5 of this application has several punching and tearing openings. Note that these punching and tearing openings need to be punched during the stretching process. When the sub-finished part 601 is punched and cut by the subsequent stamping die, these punching and tearing openings can ensure that the sub-finished part 601 is not damaged by the outer frame scrap, thereby improving the quality of the final punched product.

[0036] Based on the above description, the punching and stretching process provided in this application has a relatively simple structure, which reduces the production input cost of enterprises. The shield can be punched and stretched through continuous operation of the continuous die, which has high working efficiency. Furthermore, it can avoid product damage during subsequent punching and blanking, thereby effectively ensuring the quality of the final product.

[0037] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A punching and stretching process for a shielding cover, characterized in that, Specifically, the following steps are included: S1. Punch out material pulling holes on the upper and lower sides of the strip and punch out upper and lower openings corresponding to the product on the upper and lower sides of the strip. S2. Punch out the left and right blanks corresponding to the products on the left and right sides of the strip to form the initial blank; S3. Punch out small holes and the first slot at the corresponding positions in the initial blank; S4. Punch out a second slot with teeth at the corresponding position in the initial blank; S5. Stamp and stretch the initial blank to form a sub-finished part with a border around its perimeter; S6. Punch the scrap material from the sub-finished parts to form the final finished parts.

2. The shielding cover punching and stretching process according to claim 1, characterized in that, The distance between the material pulling holes is 50mm.

3. The shielding cover punching and stretching process according to claim 1, characterized in that, In step S5, several punching and tearing openings are made on the edge material of the sub-finished part.

4. The shielding cover punching and stretching process according to claim 1, characterized in that, In step S3, two small holes are formed and three first empty slots are formed.

5. The shielding cover punching and stretching process according to claim 1, characterized in that, The number of second empty slots formed in step S4 is three.

6. The shielding cover punching and stretching process according to claim 1, characterized in that, There is a 2mm gap between the tooth edge and one side of the second cavity.

Images