Blanking structure for punching inner hole of fisheye terminal

Abstract

The utility model relates to a blanking structure for punching an inner hole of a fisheye terminal, and belongs to the technical field of punching dies. The blanking structure comprises a lower die module, and a first product profiling protruding block is arranged on the side, close to a product, of the lower die module. The upper die module comprises a blanking module and a lower die module; the stripping module is arranged at the end, close to the lower die module, of the discharging module, a second product profiling protruding block is arranged on the side, close to a product, of the stripping module, and the first product profiling protruding block and the second product profiling protruding block are matched to wrap a fisheye terminal and matched with the discharging module to punch an inner hole of the fisheye terminal. According to the utility model, the requirements of diversification and complication of products are met, the quality of the products is improved, the outer ring of the fisheye terminal is prevented from being released and deformed by stress, the blanking precision and shape of the inner hole can be ensured to meet the requirements of drawings, and the problem that the appearance and the inner hole of the fisheye terminal cannot meet the use function is solved.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and specifically to a blanking structure for the inner hole of a stamped fisheye terminal. Background Technology

[0002] Fisheye terminals are mainly used in connector fields such as automotive and communications, including USB, card readers, home appliance and computer interfaces. The fisheye hole is an important structure on the fisheye terminal. The dimensions of the terminal are strictly required. The fisheye hole is generally punched out of the terminal using a fisheye punch. Therefore, the fisheye punch and cutting edge are very important in the forming mold.

[0003] Currently, existing fisheye punches and cutting edges generally consist of a base and a working part. In high-speed stamping, the strength of the fisheye punch cannot be guaranteed, and the cutting edge of the working part is very small. The die is prone to breakage during high-speed production, resulting in a short service life and unreliable dimensional accuracy. The cutting edge is generally flush with the lower die surface. In conventional stamping dies, the cutting edge of the lower die is flush with the lower template. However, after the fisheye terminal periphery is formed, cutting the inner hole material will deform the chamfer around the fisheye shape, causing inconsistent spacing between the inner hole and the two sides of the fisheye, resulting in poor dimensions and appearance. The root cause is that during the inner hole cutting process, the stress release of the product and the downward punching force cause deformation of the fisheye shape, making it difficult to guarantee dimensions and appearance. Utility Model Content

[0004] The purpose of this invention is to provide a blanking structure for the inner hole of a stamped fisheye terminal. This blanking mechanism addresses the diverse and complex requirements of products, improves product quality, ensures that the outer ring of the fisheye terminal is not deformed by stress release, and also ensures that the accuracy and shape of the inner hole blanking meet the drawing requirements, thus solving the problem that the shape and inner hole of the fisheye terminal cannot meet the functional requirements.

[0005] To achieve the above objectives, this utility model provides a blanking structure for the inner hole of a stamped fisheye terminal, the blanking structure comprising:

[0006] The lower mold module has a first product-contouring protrusion on the side near the product.

[0007] Upper mold module, the upper mold module includes:

[0008] Material feeding module;

[0009] The stripping module is located at one end of the unloading module near the lower mold module, and the stripping module is provided with a second product contouring protrusion on the side near the product. The first product contouring protrusion and the second product contouring protrusion cooperate to cover the fisheye terminal and cooperate with the unloading module to punch the inner hole of the fisheye terminal.

[0010] Optionally, the lower mold module includes:

[0011] The lower die cutting edge is located on the side close to the product, and a first product-contouring protrusion is provided on the lower die cutting edge.

[0012] Optionally, the lower mold module further includes:

[0013] A lower mold pad is disposed on the side of the lower mold cutting edge away from the product, and is used to fix the lower mold cutting edge.

[0014] Optionally, the feeding module includes:

[0015] A blanking punch is located on the other side near the product and is used to cooperate with the lower die cutter to punch the inner hole of the fisheye terminal.

[0016] Optionally, the feeding module further includes:

[0017] The clamp insert is connected to the side of the feeding punch away from the product and is used to fix the feeding punch.

[0018] Optionally, the desizing module includes:

[0019] The first stripper is disposed between the blanking punch and the product, and is positioned opposite to the lower die cutting edge. The first stripper has a second product-conforming protrusion on the side near the product. The first product-conforming protrusion and the second product-conforming protrusion cooperate to cover the fisheye terminal and cooperate with the blanking punch to press the inner hole of the fisheye terminal.

[0020] Optionally, the desizing module further includes:

[0021] The second stripper is disposed between the first stripper and the discharge punch.

[0022] Optionally, the first stripper and the second stripper are connected by a dovetail joint.

[0023] Optionally, the first stripper and the second stripper are provided with internal cavities that cooperate with the punching of the discharge punch.

[0024] Through the above technical solution, this utility model relates to a blanking structure for the inner hole of a stamped fisheye terminal. A first product-conforming protrusion is provided on the lower die module near the product side, and a stripping module is provided on the blanking module near the lower die module. A second product-conforming protrusion is provided on the stripping module near the product side. The first and second product-conforming protrusions cooperate to cover the fisheye terminal and cooperate with the blanking module to stamp the inner hole of the fisheye terminal. This solves the problem of diverse and complex product requirements, improves product quality, ensures that the outer ring of the fisheye terminal is not deformed by stress release, and also ensures that the accuracy and shape of the inner hole blanking meet the drawing requirements, thus solving the problem that the shape and inner hole of the fisheye terminal cannot meet the functional requirements. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of the blanking structure for the inner hole of a stamped fisheye terminal according to an embodiment of this utility model;

[0027] Figure 2 This is a schematic diagram of the blanking structure for the inner hole of a stamped fisheye terminal according to an embodiment of this utility model;

[0028] Figure 3 This is a schematic diagram of the first product contouring protrusion according to an embodiment of this utility model;

[0029] Figure 4 This is a schematic diagram of the second product contouring protrusion according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the stamping die in the open state according to an embodiment of this utility model;

[0031] Figure 6 This is a schematic diagram of the closed state of a stamping die according to an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures

[0033] 1. Lower mold module 11. Lower mold cutting edge

[0034] 111. First product contouring protrusion; 12. Lower mold pad.

[0035] 2. Upper mold module 21. Material unloading module

[0036] 211. Feeding punch 212. Clamping plate insert

[0037] 221. First stripper insert; 2211. Second product contouring protrusion.

[0038] 222. Second unloading feeder 3. Product

[0039] 4. Lower template 5. Stripper plate

[0040] 6. Back panel 7. Plywood Detailed Implementation

[0041] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0042] In this embodiment of the utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used to describe the relative positional relationships of the components in relation to the directions shown in the accompanying drawings or in relation to the vertical, perpendicular, or gravitational directions.

[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0044] like Figure 1 The diagram shown is a schematic diagram of the blanking structure for the inner hole of a stamped fisheye terminal according to an embodiment of this utility model. Figure 2 The diagram shown is a schematic diagram of the blanking structure for the inner hole of a stamped fisheye terminal according to an embodiment of this utility model. Figure 1 and Figure 2The stamping structure for the inner hole of the fisheye terminal includes a lower die module 1 and an upper die module 2. Specifically, the lower die module 1 has a first product-contouring protrusion 111 near the product 3. The upper die module 2 includes a blanking module 21 and a stripping module. The stripping module is located at the end of the blanking module 21 near the lower die module 1, and a second product-contouring protrusion 2211 is provided on the side of the stripping module near the product 3. The first product-contouring protrusion 111 and the second product-contouring protrusion 2211 cooperate to cover the fisheye terminal and cooperate with the blanking module 21 to stamp the inner hole of the fisheye terminal. By using the cooperation of the first product-contouring protrusion 111 and the second product-contouring protrusion 2211 to cover the fisheye terminal, while ensuring that the outer ring of the product 3 is not deformed by stress release, the accuracy and shape of the inner hole blanking also meet the drawing requirements.

[0045] In this embodiment, the lower mold module 1 is disposed on the lower mold plate 4, including a lower mold cutting edge 11 and a lower mold pad 12. The lower mold cutting edge 11 is disposed on the side closer to the product 3, and a first product contouring protrusion 111 is provided on the lower mold cutting edge 11. The lower mold pad 12 is disposed on the side of the lower mold cutting edge 11 away from the product 3, and is used to fix the lower mold cutting edge 11. Specifically, it can be as follows: Figure 3 As shown.

[0046] In this embodiment, the unloading module 21 includes an unloading punch 211 and a clamping plate insert 212. The unloading punch 211 is mounted on the back plate 6, and the clamping plate insert 212 is mounted on the clamping plate 7. The unloading punch 211 is located on the side closest to the product 3 and is used to cooperate with the lower die cutter 11 to punch the inner hole of the fisheye terminal. The clamping plate insert 212 is connected to the side of the unloading punch 211 away from the product 3 and is used to fix the unloading punch 211. After the unloading punch 211 cooperates with the lower die cutter 11 to punch away the irregular hole inside the fisheye of the fisheye terminal, the waste material falls into the lower die cutter 11 and then through the lower die pad 12 into the waste collection box, at which point the unloading is completed.

[0047] In this embodiment, the stripping module is mounted on the stripping plate 5. The stripping module includes a first stripping insert 221 and a second stripping insert 222. The first stripping insert 221 is positioned between the blanking punch 211 and the product 3, opposite to the lower die cutting edge 11. A second product-contouring protrusion 2211 is provided on the side of the first stripping insert 221 closest to the product 3. The first and second product-contouring protrusions 111 and 2211 cooperate to cover the fisheye terminal and cooperate with the blanking punch 211 to punch the inner hole of the fisheye terminal. The second stripping insert 222 is positioned between the first stripping insert 221 and the blanking punch 211. By cooperating with the second product-contouring protrusion 2211 on the first stripping insert 221 and the first product-contouring protrusion 111 on the lower die cutting edge 11, the product 3 is covered, ensuring that the outer ring of the product 3 is not deformed by stress release while also guaranteeing that the accuracy and shape of the inner hole blanking meet the drawing requirements, and the product 3 is not easily deformed. Specifically, it can be as follows... Figure 4As shown.

[0048] In this embodiment, to ensure the strength of the feeding punch 211 during movement, the first stripper 221 and the second stripper 222 are dovetail-connected, and the first stripper 221 and the second stripper 222 are provided with internal cavities to cooperate with the punching of the feeding punch 211, such as... Figure 5 As shown, when the stamping die is open, the blanking punch 211 does not contact the product 3. The effective functional part of the blanking punch 211 must be guided in the second stripper 222. By setting an internal cavity to guide the blanking punch 211, the gap between the second stripper 222 and the blanking punch 211 is reduced, which can ensure the strength of the blanking punch 211 during movement. The second product-conforming protrusion 2211 set on the first stripper 221 presses the material during the die closing process. The second product-conforming protrusion 2211 on the first stripper 221 is prone to breakage and wear. It is made into a split part connected by a dovetail, which is convenient for maintenance, repair and replacement, and can also protect the strength of the blanking punch 211.

[0049] like Figure 6 As shown, in the closed state of the stamping die, the first stripper 221 is provided with a second product contouring protrusion 2211 on one side, which contacts the product 3 and pushes the product 3 further down into the lower die cutting edge 11 of the blanking module 21. At this time, the product 3 is covered by the second product contouring protrusion 2211 provided on the first stripper 221 and the first product contouring protrusion 111 provided on the lower die cutting edge 11. The press continues to descend, and the blanking punch 211 continues to descend through the second stripper 222 and the first stripper 221 until the press descends and the die is closed. At this time, the blanking punch 211 punches out the irregular hole of the inner hole of the fisheye terminal, and the waste falls into the lower die cutting edge 11, passes through the lower die pad 12, and falls into the waste collection box. At this time, the blanking is completed.

[0050] Through the above technical solution, this utility model relates to a blanking structure for the inner hole of a stamped fisheye terminal. A first product-conforming protrusion 111 is provided on the side of the lower die module 1 near the product 3. A stripping module is provided on the end of the blanking module 21 near the lower die module 1, and a second product-conforming protrusion 2211 is provided on the side of the stripping module near the product 3. The first product-conforming protrusion 111 and the second product-conforming protrusion 2211 cooperate to cover the fisheye terminal and cooperate with the blanking module 21 to stamp the inner hole of the fisheye terminal. This solves the problem of the diverse and complex requirements of the product 3, improves the quality of the product 3, ensures that the outer ring of the fisheye terminal is not deformed by stress release, and also ensures that the accuracy and shape of the inner hole blanking meet the drawing requirements, thus solving the problem that the shape and inner hole of the fisheye terminal cannot meet the functional requirements.

[0051] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention. This includes combining various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A blanking structure for the inner hole of a stamped fisheye terminal, characterized in that, The feeding structure includes: The lower mold module has a first product-contouring protrusion on the side near the product. Upper mold module, the upper mold module includes: Material feeding module; The stripping module is located at one end of the unloading module near the lower mold module, and the stripping module is provided with a second product contouring protrusion on the side near the product. The first product contouring protrusion and the second product contouring protrusion cooperate to cover the fisheye terminal and cooperate with the unloading module to punch the inner hole of the fisheye terminal.

2. The feeding structure according to claim 1, characterized in that, The lower mold module includes: The lower die cutting edge is located on the side close to the product, and a first product-contouring protrusion is provided on the lower die cutting edge.

3. The feeding structure according to claim 2, characterized in that, The lower mold module also includes: A lower mold pad is disposed on the side of the lower mold cutting edge away from the product, and is used to fix the lower mold cutting edge.

4. The feeding structure according to claim 2, characterized in that, The feeding module includes: A blanking punch is located on the other side near the product and is used to cooperate with the lower die cutter to punch the inner hole of the fisheye terminal.

5. The feeding structure according to claim 4, characterized in that, The feeding module also includes: The clamp insert is connected to the side of the feeding punch away from the product and is used to fix the feeding punch.

6. The feeding structure according to claim 5, characterized in that, The desizing module includes: The first stripper is disposed between the blanking punch and the product, and is positioned opposite to the lower die cutting edge. The first stripper has a second product-conforming protrusion on the side near the product. The first product-conforming protrusion and the second product-conforming protrusion cooperate to cover the fisheye terminal and cooperate with the blanking punch to press the inner hole of the fisheye terminal.

7. The feeding structure according to claim 6, characterized in that, The desizing module also includes: The second stripper is disposed between the first stripper and the discharge punch.

8. The feeding structure according to claim 7, characterized in that, The first stripper and the second stripper are connected by a dovetail joint.

9. The feeding structure according to claim 7, characterized in that, The first and second stripping inserts are provided with internal cavities that cooperate with the punching of the discharge punch.

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