Punching and hole flanging die for high-strength steel plate

Abstract

The utility model discloses a high-strength steel plate punching and hole flanging die which comprises a die body. The first upper die and the first lower die are matched with each other to punch and pull the product; the second upper die and the second lower die are used for carrying out first-time shaping on a pulling bag of the product; the third upper die and the third lower die are used for carrying out secondary shaping on the pulling bag of the product; the fourth upper die and the fourth lower die are used for carrying out third-time shaping on the pulling bag of the product; the fifth upper die and the fifth lower die are used for carrying out fourth-time shaping on the pulling bag of the product; the sixth upper die and the sixth lower die are used for punching the product; the seventh upper die and the seventh lower die are used for punching and chamfering the hole site of the product; the eighth upper die and the eighth lower die are used for performing hole flanging on the product; the progressive die is used for carrying out at least four times of whole package procedures on the product, and bottom hole punching and hole flanging can be carried out only after the final hole flanging shape is achieved through continuous correction.

Description

Technical Field

[0001] This utility model relates to the field of stamping structural parts for automotive door lock base plates, and in particular to a high-strength steel plate stamping and turning die. Background Technology

[0002] Figure 4 This is a structural component for the base plate of a car door lock. Since its function is to fix other structural parts of the door lock, it needs to have threads for locking and securing. Therefore, the threaded holes are a key characteristic of this product. During manufacturing, there must be no breakage of the holes or insufficient torque in the threads. Due to the high strength and hardness of the material, the stamping process often results in cracking of the holes and out-of-tolerance inner diameter dimensions, failing to meet the requirements of the drawings for the threaded holes. This affects the key functions of the product. Therefore, the die forming and stamping of the hole for this product has been improved and developed. Utility Model Content

[0003] To solve the above problems, this technical solution provides a high-strength steel plate stamping and flanging die.

[0004] To achieve the above objectives, the technical solution is as follows:

[0005] A high-strength steel plate stamping and turning die includes a die body, wherein the die body comprises, in sequence, the following:

[0006] The first upper die and the first lower die work together to stamp and pull the product.

[0007] The second upper mold and the second lower mold are located at the adjacent station of the first upper mold and perform the first shaping of the product's packaging.

[0008] The third upper mold and the third lower mold are located at the adjacent station of the second upper mold and perform a second shaping of the product packaging.

[0009] The fourth upper mold and the fourth lower mold are located at the adjacent workstations of the third upper mold, and perform a third shaping of the product packaging.

[0010] The fifth upper mold and the fifth lower mold are located at adjacent stations of the fourth upper mold and perform the fourth shaping of the product packaging.

[0011] The sixth upper die and the sixth lower die are located at adjacent stations of the fifth upper die and punch holes in the product.

[0012] The seventh upper die and the seventh lower die are located at adjacent stations of the sixth upper die and are used to punch and chamfer the holes on the product.

[0013] The eighth upper mold and the eighth lower mold are located at adjacent stations of the seventh upper mold and are used to perform flanging on the product;

[0014] The ninth upper mold and the ninth lower mold are located at adjacent stations of the eighth upper mold and are used to reshape the product holes.

[0015] In this embodiment, the stamping end diameters of the second, third, fourth, and fifth upper dies gradually decrease in sequence.

[0016] In this embodiment, the seventh lower mold is provided with a first abutting part, and the first abutting part is provided with a first boss.

[0017] In this embodiment, the ninth lower mold is provided with a second abutment, and the second abutment is provided with a second boss.

[0018] The beneficial effects of this application are:

[0019] This application is for a progressive die, which involves at least four complete packaging processes for the product. Only after continuous modification to achieve the final flipped hole shape can the bottom hole be punched and the flipped hole be made. The design of the forming and tapping of the flipped hole is improved, which can meet the requirements of the drawings for the flipped hole of the product. This process improvement has greatly improved the production efficiency compared to the original method, and the yield rate has been greatly improved. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0021] Figure 1 This is a schematic diagram of the mold exploded according to an embodiment of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the mold exploded according to an embodiment of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the process flow of an embodiment of this utility model;

[0024] Figure 4 This is a schematic diagram of the final product. Detailed Implementation

[0025] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] Please refer to Figure 1-4 As shown, a high-strength steel plate stamping and turning die includes a die body, which comprises, in sequence, the following components:

[0027] The first upper die 1 and the first lower die 2 work together to stamp and pull the product.

[0028] The second upper mold 3 and the second lower mold 4 are located at adjacent stations of the first upper mold 1 and perform the first shaping of the product packaging.

[0029] The third upper mold 5 and the third lower mold 6 are located at adjacent stations of the second upper mold 3, and perform a second shaping of the product packaging.

[0030] The fourth upper mold 7 and the fourth lower mold 8 are located at adjacent stations of the third upper mold 5, and perform a third shaping of the product packaging.

[0031] The fifth upper mold 9 and the fifth lower mold 10 are located at adjacent stations of the fourth upper mold 7, and perform the fourth shaping of the product packaging.

[0032] The sixth upper die 11 and the sixth lower die 12 are located at adjacent stations of the fifth upper die 9 and punch holes in the product.

[0033] The seventh upper die 13 and the seventh lower die 14 are located at adjacent stations of the sixth upper die 11 and are used to punch and chamfer the holes of the product.

[0034] The eighth upper mold 15 and the eighth lower mold 16 are located at adjacent stations of the seventh upper mold 13 and are used to perform flanging on the product.

[0035] The ninth upper mold 17 and the ninth lower mold 18 are located at adjacent stations of the eighth upper mold 15 and are used to reshape the holes in the product.

[0036] refer to Figure 3 This application first uses the cooperation of the first upper die and the first lower die to form a convex bulge on the product. Then, at least four processes are used to stretch and shape the convex bulge. Next, the sixth upper die and the sixth lower die punch holes. Then, the seventh upper die and the seventh lower die chamfer the bulge for subsequent hole turning. Then, the eighth upper die and the eighth lower die turn the hole. Finally, the bulge is shaped back. This application has a total of ten processes to ensure that the hole turning is completed smoothly. After the convex bulge is shaped to the required size, the bottom hole is punched. Then, the hole turning and sizing processes are performed. This innovation solves the problem of hole turning and also ensures the product's functional characteristics (hole turning strength and thread torque).

[0037] The inner radius (R-angle) of the convex hull (third process) is parabolic (irregular R-angle). If it is a regular R-angle, it will affect the forming of the convex hull, and the hole turning performance (tooth torque) will not meet the requirements of the drawing.

[0038] In this embodiment, the stamping end diameters of the second upper die 3, the third upper die 5, the fourth upper die 7, and the fifth upper die 9 gradually decrease in sequence, and the product is made to meet the requirements through multiple continuous packaging processes.

[0039] In this embodiment, the seventh lower die 14 is provided with a first abutting part 19, and the first abutting part 19 is provided with a first boss 20. After stamping, the product hole can be chamfered and turned, which is beneficial for subsequent hole turning.

[0040] In this embodiment, the ninth lower mold 18 is provided with a second abutment 21, and the second abutment 21 is provided with a second boss 22.

[0041] The above description is only a preferred embodiment of this application and is not intended to limit the scope of implementation of this application. Any other embodiments whose principles and basic structures are the same as or similar to those of this application are within the protection scope of this application.

Claims

1. A high-strength steel plate stamping and flanging die, characterized in that, Includes a mold body, wherein the mold body comprises, in sequence; The first upper die (1) and the first lower die (2) work together to stamp and pull the product. The second upper mold (3) and the second lower mold (4) are located at adjacent stations of the first upper mold (1) and perform the first shaping of the product packaging. The third upper mold (5) and the third lower mold (6) are located at the adjacent station of the second upper mold (3) and perform a second shaping of the product packaging. The fourth upper mold (7) and the fourth lower mold (8) are located at adjacent stations of the third upper mold (5) and perform a third shaping of the product packaging. The fifth upper mold (9) and the fifth lower mold (10) are located at adjacent stations of the fourth upper mold (7) and perform the fourth shaping of the product packaging. The sixth upper die (11) and the sixth lower die (12) are located at adjacent stations of the fifth upper die (9) and punch holes in the product; The seventh upper die (13) and the seventh lower die (14) are located at adjacent stations of the sixth upper die (11) and are used to punch and chamfer the holes of the product. The eighth upper mold (15) and the eighth lower mold (16) are located at adjacent stations of the seventh upper mold (13) and are used to perform flanging on the product; The ninth upper mold (17) and the ninth lower mold (18) are located at adjacent stations of the eighth upper mold (15) and are used to straighten the holes in the product.

2. The high-strength steel plate stamping and turning die according to claim 1, characterized in that: The stamping end diameters of the second upper die (3), the third upper die (5), the fourth upper die (7), and the fifth upper die (9) gradually decrease in sequence.

3. The high-strength steel plate stamping and turning die according to claim 2, characterized in that: The seventh lower mold (14) is provided with a first abutting part (19), and the first abutting part (19) is provided with a first boss (20).

4. The high-strength steel plate stamping and turning die according to claim 1, characterized in that: The ninth lower mold (18) is provided with a second abutment (21), and the second abutment (21) is provided with a second boss (22).

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