Riveting aluminum block and manufacturing device thereof

Abstract

The utility model provides a riveting aluminum block and a manufacturing device thereof, the riveting aluminum block comprises a reverse extrusion material part and a reverse extrusion material accumulation part which are distributed up and down in an inner hole, and materials of the reverse extrusion material part can be extruded to the reverse extrusion material accumulation part by stamping the reverse extrusion material part, so that the materials can be extruded to the reverse extrusion material accumulation part after being stamped. The size of the pre-punched hole is closer to that of the fine punched hole, so that an inner hole in the position of the reverse extrusion material part is closer to a full-bright zone after the fine punched hole; according to the manufacturing device, the reverse extrusion station is arranged in front of the fine punching station, one-time machining can be conducted on the pre-punched hole through the reverse extrusion station, so that the material of the pre-punched hole is closer to that of the fine punching hole, and then an inner hole in the position of the reverse extrusion material is closer to a full-bright zone after the fine punching; and moreover, the reverse extrusion lower die acts on the inner hole from the lower side, so that waste materials are not prone to entering gaps of parts to form aluminum wires, the stripping force is small, and forming is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of riveted aluminum block processing, and particularly relates to a riveted aluminum block and a manufacturing device thereof. Background Technique

[0002] The riveted aluminum block is often arranged in the top cover structure of a new energy battery and is used for connecting the battery top cover sheet and the pole column.

[0003] The structure of the riveted aluminum block generally includes an inner hole for installing the pole column. When the inner hole is formed by stamping, a punching structure is generally arranged on the upper die of the stamping die. First, pre-punching is carried out, and then fine punching is carried out so that the size of the inner hole is adapted to the pole column. However, in actual operation, when the upper die punching structure works, waste materials will enter the part gap to form aluminum wires, resulting in a large stripping force required for the upper die punching structure, unstable forming, and the upper die is prone to lifting the strip. Moreover, due to the large difference in size between the pre-punching and the fine punching, the material to be finely punched off is relatively thick, burrs are easily formed after fine punching, and a large tearing zone is easily generated in the inner hole. And the subsequent welding process of the riveted aluminum block requires that the inner hole is close to the full bright zone, otherwise it will affect the welding of the subsequent process. How to design the structure of the riveted aluminum block and the manufacturing equipment to make the forming of the riveted aluminum block more stable and the inner hole closer to the full bright zone is a problem that technicians are committed to solving. Content of the Utility Model

[0004] The problem to be solved by the utility model is to provide a riveted aluminum block with more stable forming and an inner hole closer to the full bright zone after stamping, and a manufacturing device for the riveted aluminum block.

[0005] The technical solution adopted by the utility model to solve the above problems is: a riveted aluminum block, comprising:

[0006] An aluminum block body;

[0007] An inner hole, wherein the inner hole is arranged to penetrate through the aluminum block body;

[0008] An anti-extrusion material part, wherein the anti-extrusion material part is arranged to be distributed along the circumferential direction of the lower section of the inner hole; and

[0009] An anti-extrusion material accumulation part, wherein the anti-extrusion material part is arranged to be distributed along the circumferential direction of the upper section of the inner hole; when the anti-extrusion material part is subjected to stamping, it accumulates to the anti-extrusion material accumulation part to reduce the fine punching surplus material of the pre-punching and the fine punching.

[0010] Compared with the prior art, the riveting aluminum block of the present utility model includes an anti-extrusion material part and an anti-extrusion material accumulation part which are arranged up and down in the inner hole. By stamping the anti-extrusion material part, the material of the anti-extrusion material part can be extruded to the anti-extrusion material accumulation part, so that after stamping, the size of the pre-punched hole is closer to the size of the precision-punched hole, thereby reducing the formation of burrs or tear bands due to the relatively thick material removed during precision punching. Furthermore, after precision punching, the inner hole at the position of the anti-extrusion material part is closer to the full bright zone; and the material accumulated in the anti-extrusion material accumulation part can be removed during precision punching, and since the size of the anti-extrusion material accumulation part is controllable, even if there are a small number of tear bands, the impact on the subsequent welding process is relatively small.

[0011] A riveting aluminum block of the present utility model further includes a chamfered step, wherein the chamfered step is arranged on the aluminum block body; the chamfered step is arranged close to the anti-extrusion material part and communicates with the inner hole.

[0012] For a riveting aluminum block of the present utility model, the height ratio range of the anti-extrusion material part to the anti-extrusion material accumulation part is 2 - 3:1.

[0013] For a riveting aluminum block of the present utility model, after the anti-extrusion material part is stamped, the reserved part of the inner hole is 0.04 - 0.06 mm larger than the circumferential dimension of the precision-punched hole.

[0014] A manufacturing device for manufacturing the aforementioned riveting aluminum block includes:

[0015] An anti-extrusion station, wherein the anti-extrusion station includes an anti-extrusion upper die and an anti-extrusion lower die; the anti-extrusion lower die is used for stamping the anti-extrusion material part; and

[0016] A precision punching station, wherein the precision punching station is arranged after the anti-extrusion station; the precision punching station includes a precision punching upper die and a precision punching lower die; the precision punching upper die is used for precision punching the inner hole.

[0017] Compared with the prior art, the manufacturing device of the present utility model is provided with an anti-extrusion station before the precision punching station. Through the anti-extrusion station, the pre-punched hole can be processed once, making the material of the pre-punched hole closer to the precision-punched hole. Furthermore, after precision punching, the inner hole at the position of the anti-extrusion material part is closer to the full bright zone; and the anti-extrusion lower die acts on the inner hole from below respectively, making it difficult for the waste material to enter the part clearance to form aluminum wires, resulting in a smaller stripping force and more stable forming.

[0018] For a manufacturing device of the present utility model, the anti-extrusion lower die includes a fixed groove for accommodating the aluminum block body and an anti-extrusion forming column; the upper end of the anti-extrusion forming column is set to protrude from the bottom of the fixed groove so as to extend into the inner hole.

[0019] A manufacturing device of the present utility model, wherein the backward extrusion forming column includes a chamfer step fitting block arranged at the upper end, and a backward extrusion forming block arranged at the upper end of the chamfer step fitting block; the axial dimension of the backward extrusion forming block matches that of the backward extrusion material part; the radial dimension of the backward extrusion forming block matches the dimension of the reserved part of the inner hole.

[0020] A manufacturing device of the present utility model, the fine blanking upper die includes a fine blanking hole forming column; the fine blanking hole forming column is used for forming a fine blanking hole and punching out the material accumulated in the backward extrusion material accumulation part.

[0021] A manufacturing device of the present utility model further includes:

[0022] An inner hole punching station, wherein the inner hole punching station is arranged before the backward extrusion station and is used for pre-punching the inner hole; and

[0023] A chamfer step punching station, wherein the chamfer step punching station is arranged between the inner hole punching station and the backward extrusion station and is used for punching the chamfer step. Description of the Drawings

[0024] Figure 1 Is a three-dimensional schematic diagram of the riveted aluminum block of the present utility model;

[0025] Figure 2 Is a cross-sectional schematic diagram of the riveted aluminum block of the present utility model after pre-punching the inner hole;

[0026] Figure 3 Is a cross-sectional schematic diagram of the riveted aluminum block of the present utility model after backward extrusion stamping;

[0027] Figure 4 Is a cross-sectional schematic diagram of the riveted aluminum block of the present utility model after fine blanking the inner hole;

[0028] Figure 5 Is a layout schematic diagram of the manufacturing device of the present utility model;

[0029] Figure 6 Is a die schematic diagram of the backward extrusion station and the fine blanking station of the present utility model;

[0030] Figure 7 Is an enlarged view of the die structure of the backward extrusion station;

[0031] Figure 8 Is an enlarged view of the die structure of the fine blanking station. Detailed Description of the Invention

[0032] Before describing any embodiments of the present utility model in detail, it should be understood that the present utility model is not limited in its application to the construction and arrangement details of the components described in the following description or illustrated in the following drawings. The present utility model is capable of having other embodiments and can be practiced or carried out in various ways. Additionally, it should be understood that the wording and terminology used herein are for the purpose of description and should not be considered restrictive. As used herein, the terms "comprising" or "having" and their variants are intended to cover the listed items and their equivalents as well as additional items. Unless otherwise specified or limited, the terms "mounted", "connected", "supported" and "coupled" and their variants are used broadly and cover direct mounting and indirect mounting, connection, support and coupling. Furthermore, "connected" and "coupled" are not limited to physical or mechanical connection or coupling.

[0033] And, in the first aspect, in the disclosure of the present utility model, the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, the above terms should not be construed as limiting the present utility model; in the second aspect, the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of this element can be multiple. The term "a" should not be construed as limiting the quantity.

[0034] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the drawings are only examples and do not limit the present utility model. The objectives of the present utility model have been fully and effectively achieved. The functions and structural principles of the present utility model have been demonstrated and explained in the embodiments. Without departing from the said principles, the embodiments of the present utility model can have any deformation or modification.

[0035] The embodiments of the present utility model will be further described below with reference to the drawings.

[0036] Please refer to Figure 1-4 A riveted aluminum block as shown, including an aluminum block body 1, an inner hole 2, an inverse extrusion material portion 3 and an inverse extrusion material accumulation portion 4; wherein the inner hole 2 is provided to penetrate through the aluminum block body 1; wherein the inverse extrusion material portion 3 is provided to be distributed circumferentially along the lower section of the inner hole 2; wherein the inverse extrusion material portion 3 is provided to be distributed circumferentially along the upper section of the inner hole 2; when the inverse extrusion material portion 3 is subjected to stamping, it accumulates to the inverse extrusion material accumulation portion 4 so as to reduce the fine blanking residue of the pre-punched hole and the fine-punched hole.

[0037] In actual use, the riveted aluminum block of the present utility model is included in the inner hole 2, and the backward extrusion material part 3 and the backward extrusion material accumulation part 4 are arranged vertically. By stamping the backward extrusion material part 3, the material of the backward extrusion material part 3 can be extruded into the backward extrusion material accumulation part 4, so that after stamping, the size of the pre-punched hole is closer to the size of the finish-punched hole, thereby reducing the formation of burrs or tear bands due to the relatively thick material removed during finish punching. Furthermore, after finish punching, the inner hole 2 at the position of the backward extrusion material part 3 is closer to the full bright zone; while the material accumulated in the backward extrusion material accumulation part 4 can be punched off during finish punching. Since the size of the backward extrusion material accumulation part 4 is controllable, and due to the short-face feature relationship of normal punching, the upper part of the inner hole is in the bright zone and has little impact. Even if there are a small number of tear bands, the impact on the subsequent welding process is relatively small.

[0038] Please continue to refer to Figure 2 , in order to reduce the formation of flash during the forming of the inner hole 2, the present utility model further includes a chamfer step 5, which is formed after the pre-punching of the inner hole 2 and before the finish punching; wherein the chamfer step 5 is arranged on the aluminum block body 1; the chamfer step 5 is arranged close to the backward extrusion material part 3 and communicates with the inner hole 2.

[0039] Please continue to refer to Figure 2 , in some embodiments, the height ratio range of the backward extrusion material part 3 to the backward extrusion material accumulation part 4 is 2-3:1. In this ratio range, the height of the full bright zone formed by the backward extrusion material part 3 is sufficient for the subsequent welding process, and the backward extrusion material part 3 can be extruded into the backward extrusion material accumulation part 4.

[0040] Please continue to refer to Figure 3 、 Figure 4 , in some embodiments, after the backward extrusion material part 3 is stamped, the reserved part of the inner hole 2 is 0.04-0.06 mm larger than the circumferential dimension of the finish-punched hole; in this reserved dimension, a state close to the full bright zone can be formed by the backward extrusion material part 3 after finish punching.

[0041] Please refer to Figure 5-8 A manufacturing device shown, the manufacturing device is used to manufacture the aforementioned riveted aluminum block, and it includes a backward extrusion station 6 and a finish punching station 7; wherein the backward extrusion station 6 includes a backward extrusion upper die 61 and a backward extrusion lower die 62; the backward extrusion lower die 62 is used to stamp the backward extrusion material part 3; wherein the finish punching station 7 is arranged after the backward extrusion station 6; the finish punching station 7 includes a finish punching upper die 71 and a finish punching lower die 72; the finish punching upper die 71 is used to finish punch the inner hole 2.

[0042] In actual use, a backward extrusion station 6 is provided in front of the fine blanking station 7 of the manufacturing device of the present utility model. Through the backward extrusion station 6, the pre-punched hole can be processed once, making the material of the pre-punched hole closer to the fine punched hole. As a result, after fine punching, the inner hole 2 at the position of the backward extrusion material part 3 is closer to the full bright zone. Moreover, the backward extrusion lower die 62 acts on the inner hole 2 from below, making it difficult for the waste material to enter the part clearance to form aluminum wires, resulting in a smaller stripping force and thus more stable forming.

[0043] Please continue to refer to Figure 7 , wherein the backward extrusion lower die 62 includes a fixed groove 621 for accommodating the aluminum block body 1 and a backward extrusion forming column 622. The upper end of the backward extrusion forming column 622 is arranged to protrude from the bottom of the fixed groove 621 so as to extend into the inner hole 2.

[0044] Please further refer to Figure 7 , wherein the backward extrusion forming column 622 includes a chamfer step matching block 6221 arranged at the upper end and a backward extrusion forming block 6222 arranged at the upper end of the chamfer step matching block 6221. The axial dimension of the backward extrusion forming block 6222 matches that of the backward extrusion material part 3. The radial dimension of the backward extrusion forming block 6222 matches the dimension of the reserved part of the inner hole 2.

[0045] Please continue to refer to Figure 8 , the fine blanking upper die 71 includes a fine punched hole forming column 711. The fine punched hole forming column 711 is used to form the fine punched hole and punch out the material accumulated in the backward extrusion material accumulation part 4.

[0046] Please continue to refer to Figure 6 , the manufacturing device further includes a punching inner hole station 8 and a punching chamfer step station 9. Among them, the punching inner hole station 8 is arranged before the backward extrusion station 6 and is used for pre-punching the inner hole 2. Among them, the punching chamfer step station 9 is arranged between the punching inner hole station 8 and the backward extrusion station 6 and is used for punching the chamfer step 5.

[0047] Please further refer to Figure 6 , it can be understood that the manufacturing device may further include other stations for forming the riveted aluminum block, such as a trimming station, a blanking station, etc. Since they have nothing to do with the forming of the inner hole 2, they will not be elaborated in the present utility model.

[0048] The above only describes the best embodiments of the present utility model, but it should not be construed as a limitation on the claims. The present utility model is not limited to the above embodiments, and its specific structure allows changes. All changes made within the protection scope of the independent claims of the present utility model are within the protection scope of the present utility model.

Claims

1. A riveted aluminum block, characterized in that, Comprising: An aluminum block body (1); An inner hole (2), wherein the inner hole (2) is arranged to penetrate through the aluminum block body (1); An inverse extrusion material part (3), wherein the inverse extrusion material part (3) is arranged to be circumferentially distributed along the lower section of the inner hole (2); and An inverse extrusion material accumulation part (4), wherein the inverse extrusion material part (3) is arranged to be circumferentially distributed along the upper section of the inner hole (2); when the inverse extrusion material part (3) is stamped, it accumulates to the inverse extrusion material accumulation part (4) to reduce the fine blanking residue of the pre-punched hole and the fine punched hole.

2. The riveted aluminum block according to claim 1, characterized in that: It further comprises a chamfered step (5), wherein the chamfered step (5) is arranged on the aluminum block body (1); the chamfered step (5) is arranged to be close to the inverse extrusion material part (3) and communicate with the inner hole (2).

3. The riveted aluminum block according to claim 1, characterized in that: The height ratio range of the inverse extrusion material part (3) to the inverse extrusion material accumulation part (4) is 2 - 3:

1.

4. The riveted aluminum block according to claim 1, wherein: After the inverse extrusion material part (3) is stamped, the reserved part of the inner hole (2) is 0.04 - 0.06 mm larger than the circumferential dimension of the fine punched hole.

5. A manufacturing device for manufacturing the riveted aluminum block according to any one of claims 1-4, characterized in that, Comprising: An inverse extrusion station (6), wherein the inverse extrusion station (6) comprises an inverse extrusion upper die (61) and an inverse extrusion lower die (62); the inverse extrusion lower die (62) is used to stamp the inverse extrusion material part (3); and A fine blanking station (7), wherein the fine blanking station (7) is arranged after the inverse extrusion station (6); the fine blanking station (7) comprises a fine blanking upper die (71) and a fine blanking lower die (72); the fine blanking upper die (71) is used to fine blank the inner hole (2).

6. The manufacturing apparatus according to claim 5, wherein: The inverse extrusion lower die (62) comprises a fixed groove (621) for accommodating the aluminum block body (1), and an inverse extrusion forming column (622); the upper end of the inverse extrusion forming column (622) is arranged to protrude from the bottom of the fixed groove (621) so as to extend into the inner hole (2).

7. The manufacturing apparatus according to claim 6, characterized in that: The inverse extrusion forming column (622) comprises a chamfered step fitting block (6221) arranged at the upper end, and an inverse extrusion forming block (6222) arranged at the upper end of the chamfered step fitting block (6221); the axial dimension of the inverse extrusion forming block (6222) matches that of the inverse extrusion material part (3); the radial dimension of the inverse extrusion forming block (6222) matches the dimension of the reserved part of the inner hole (2).

8. The manufacturing device according to claim 5, characterized in that: The fine blanking upper die (71) comprises a fine blanking hole forming column (711); the fine blanking hole forming column (711) is used to form the fine blanking hole and punch out the material accumulated in the inverse extrusion material accumulation part (4).

9. The manufacturing apparatus according to claim 5, wherein Further comprising: An inner hole punching station (8), wherein the inner hole punching station (8) is arranged before the inverse extrusion station (6) for pre-punching the inner hole (2); and A chamfered step punching station (9), wherein the chamfered step punching station (9) is arranged between the inner hole punching station (8) and the inverse extrusion station (6) for punching the chamfered step (5).

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