Nickel sheet bending forming method

Abstract

The invention relates to the technical field of nickel sheet forming, and discloses a nickel sheet bending forming method which comprises the steps that firstly, a raw material sheet is cut through an edge cutting jig to obtain a first-order semi-finished product, the first-order semi-finished product is in a flat plate shape, and the first-order semi-finished product comprises a first half part, a second half part and a middle part located between the first half part and the second half part; secondly, the two side edges of the first half part are symmetrically folded through an edge folding jig, and a second-order semi-finished product is obtained; and thirdly, the first half part and the second half part are folded relative to the middle part through a bending jig, the finished nickel sheet is obtained, the first half part and the second half part are parallel and opposite, and the two folded side edges of the first half part face the second half part. According to the nickel sheet bending forming method, on one hand, the forming requirement of a specific shape can be met, on the other hand, the adopted corresponding jig is simple in structure, the production space and cost are saved, the technical difficulty of production is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of nickel sheet forming, and in particular to a nickel sheet bending forming method. Background Art

[0002] Nickel sheets are generally used to connect the positive and negative electrodes of battery cells with battery protection boards, and are widely used in the manufacture of nickel-cadmium, nickel-metal hydride, nickel batteries, combined batteries, instruments and meters, telecommunications, electric vacuum, special light bulbs and other industries. Nickel sheet materials need to be bent during processing to make new energy electrode products.

[0003] Figure 1 The finished nickel sheet 1 of the target shape has two spaced-apart side planes 11, which are connected by a connecting portion 12. Both sides of one of the side planes 11 are required to have folded edges 13, so that the finished nickel sheet 1 can be completely centered on the product, and has good fastening and anti-fool function, and will not fall off easily.

[0004] For the forming of the above-mentioned nickel sheet, currently most of them use a mold plus a punch to bend the raw material sheet into a U shape. For the requirements of additional anti-fool or fastening functions, the nickel sheet needs to be pinched again during use to ensure that the nickel sheet will not shake when it is put on the product.

[0005] It can be seen that the nickel sheets formed by the existing process are difficult to meet more modeling requirements, the consistency of the nickel sheets is poor, and the special precision molds used are expensive to make. The punch press is large in size and has low production efficiency. In the process of processing thin materials and precision structure products, the equipment has poor applicability and excess production capacity. Summary of the invention

[0006] The purpose of the present invention is to provide a nickel sheet bending forming method, so as to realize low-cost forming of a nickel sheet with a specific shape, improve production efficiency and ensure forming quality.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A nickel sheet bending forming method, comprising:

[0009] Step 1: Cut the raw material sheet by a trimming jig to obtain a first-order semi-finished product, which is in the shape of a flat plate and includes a first half, a second half, and a middle portion between the first half and the second half;

[0010] Step 2: fold the two sides of the first half symmetrically by a folding jig to obtain a second-order semi-finished product;

[0011] Step 3: Use a bending jig to fold the first half and the second half relative to the middle part to obtain a finished nickel sheet, wherein the first half and the second half are parallel to each other, and the two sides of the folded first half face the second half.

[0012] As an optional solution, the trimming jig includes a first punch base and a first hand-operated punch. The raw material sheet is placed on the first punch base. A forming hole is provided on the first punch base. The first hand-operated punch cooperates with the forming hole to punch out two symmetrical notches on both side edges of the raw material sheet, so that the part between the two notches is formed into a middle part.

[0013] As an optional solution, a plurality of first inserts are provided on the first punch base, and the first inserts are used to limit the outer edge of the raw material sheet.

[0014] As an optional solution, the folding jig includes a second punch base and a second hand-operated punch. A first-order semi-finished product is placed on the second punch base. A forming groove is provided on the second punch base. The second hand-operated punch cooperates with the forming groove to fold both side edges of the first half to a set angle.

[0015] As an optional solution, both side edges of the first half are folded step by step, and when one side edge of the first half is pressed into the forming groove, the other side edge of the first half is tilted up.

[0016] As an optional solution, a first avoidance groove is provided on the second punch base, and the first avoidance groove is used to avoid the side edge of the second half when the side edge of the first half is folded.

[0017] As an optional solution, a plurality of second inserts are provided on the second punch base, and the second inserts are used to limit the outer edge of a sequence of semi-finished products.

[0018] As an optional solution, the bending jig includes a third punch base and a third hand-operated punch. The second-order semi-finished product is placed on the third punch base. A bending groove is provided on the third punch base. The third hand-operated punch cooperates with the bending groove to press the connection between the first half and the middle part into the bending groove, and makes the first half and the second half in an upright state.

[0019] As an optional solution, a second avoidance groove is provided on one side of the third hand-operated punch close to the first half portion, and the second avoidance groove is used to avoid the two side edges of the first half portion being folded when the first half portion is erected.

[0020] As an optional solution, a plurality of third inserts are provided on the third punch base, and the third inserts are used to limit the outer edge of the second-order semi-finished product.

[0021] Beneficial effects of the present invention:

[0022] The nickel sheet bending forming method uses a cutting jig, a folding jig and a bending jig to perform three processes of cutting, folding and bending on the raw material sheet in sequence, and finally obtains a finished nickel sheet. On the one hand, it can meet the forming requirements of a specific shape, and on the other hand, the corresponding jig structure used is simple, which saves production space and cost, reduces the technical difficulty of production, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the finished nickel sheet provided by the embodiment of the present invention.

[0024] Figure 2 is a flow chart of a nickel sheet bending method provided by an embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of a raw material sheet provided by an embodiment of the present invention;

[0026] Figure 4 is a schematic diagram of a semi-finished product provided by an embodiment of the present invention;

[0027] Figure 5 is a schematic diagram of a second-order semi-finished product provided by an embodiment of the present invention;

[0028] Figure 6 is a top view of a trimming jig provided by an embodiment of the present invention;

[0029] Figure 7 is a side view of a trimming jig provided by an embodiment of the present invention;

[0030] Figure 8 is a top view of the folding jig provided by an embodiment of the present invention;

[0031] Fig. 9 is a side view of a folding jig provided by an embodiment of the present invention;

[0032] Fig.10 is a top view of a bending jig provided by an embodiment of the present invention;

[0033] Fig.11 is a side view of a bending jig provided by an embodiment of the present invention;

[0034] Fig.12 It is a front view of the bending jig provided in an embodiment of the present invention.

[0035] In the attached figure:

[0036] 1. Finished nickel sheet; 11. Side plane; 12. Connecting part; 13. Folded edge;

[0037] 2. Raw material sheets;

[0038] 3. Semi-finished product of the first order; 31. First half; 32. Second half; 33. Middle part;

[0039] 4. Second order semi-finished products;

[0040] 5. Trimming jig; 51. First punch base; 52. First hand punch; 53. Forming hole; 54. First insert;

[0041] 6. Folding jig; 61. Second punch base; 62. Second hand punch; 63. Forming groove; 64. First avoidance groove; 65. Second insert;

[0042] 7. Bending jig; 71. Third punch base; 72. Third lever punch; 73. Bending groove; 74. Second avoidance groove; 75. Third insert. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0044] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, 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 understood as a limitation on the present invention.

[0047] In addition, the terms "first", "second", etc. are merely used to distinguish in description and have no special meanings.

[0048] See also Figure 2 As shown, this embodiment provides a nickel sheet bending forming method, comprising the following steps:

[0049] Step 1: Use the trimming fixture 5 to Figure 3 The raw material sheet 2 is cut to obtain Figure 4 A first-order semi-finished product 3, the first-order semi-finished product 3 is in a flat plate shape, and the first-order semi-finished product 3 includes a first half 31, a second half 32 and a middle part 33 located between the first half 31 and the second half 32;

[0050] Step 2: Use the folding jig 6 to symmetrically fold the two sides of the first half 31 to obtain Figure 5 The second order semi-finished product 4;

[0051] Step 3: Fold the first half 31 and the second half 32 relative to the middle part 33 by using the bending jig 7 to obtain Figure 1 The finished nickel sheet 1 is provided with the first half 31 and the second half 32 being parallel to each other, and the folded two sides of the first half 31 are facing the second half 32.

[0052] Therefore, the cutting jig 5, the folding jig 6 and the bending jig 7 are used to perform the three processes of cutting, folding and bending on the raw material sheet 2 in sequence, and finally the finished nickel sheet 1 is obtained. On the one hand, it can meet the molding requirements of a specific shape, and on the other hand, the corresponding jig structure is simple, which saves production space and cost, reduces the technical difficulty of production, and improves production efficiency.

[0053] Optionally, see Figure 6 and Figure 7 The trimming jig 5 includes a first punch base 51 and a first hand-operated punch 52. The raw material sheet 2 is placed on the first punch base 51. A forming hole 53 is provided on the first punch base 51. The first hand-operated punch 52 cooperates with the forming hole 53 to punch out two symmetrical notches on both sides of the raw material sheet 2, so that the part between the two notches is formed into the middle part 33.

[0054] Thus, through the precise cooperation between the forming hole 53 and the first hand punch 52, the middle portion 33 is formed on the raw material sheet 2 and the first half portion 31 and the second half portion 32 are divided, so that the subsequent bending forming can be smoothly performed. In addition, compared with the traditional punching machine, the trimming jig 5 is small in size, easy to move and operate, does not rely on precision molds, and has low equipment cost.

[0055] Furthermore, a plurality of first inserts 54 are provided on the first punch base 51 , and the first inserts 54 are used to limit the outer edge of the raw material sheet 2 .

[0056] Therefore, through the limiting effect of the first insert 54, the position of the raw material sheet 2 is ensured to be stable during the punching process, the cutting accuracy is improved, and the consistency and accuracy of the subsequent bending forming are ensured.

[0057] Optionally, see Figure 8 and Fig. 9 The folding jig 6 includes a second punch base 61 and a second hand punch 62. A first-order semi-finished product 3 is placed on the second punch base 61. A forming groove 63 is provided on the second punch base 61. The second hand punch 62 cooperates with the forming groove 63 to fold the two side edges of the first half 31 to a set angle.

[0058] Thus, through the precise cooperation of the forming groove 63 and the second hand punch 62, it is convenient to fold the two sides of the first half 31 to the set angle, and ensure the consistency of the folding angle, that is, to form the folded edge 13 of the finished nickel sheet 1, meet the forming requirements, and realize the fastening and foolproof functions of the finished nickel sheet 1. In addition, compared with the traditional punching machine, the folding jig 6 is small in size, easy to move and operate, does not rely on precision molds, and has low equipment cost.

[0059] Furthermore, both sides of the first half portion 31 are folded step by step, and when one side of the first half portion 31 is pressed into the forming groove 63 , the other side of the first half portion 31 is tilted up.

[0060] Thus, the negative angle forming of both side edges of the first half portion 31 can be completed through a simple stamping action, which reduces the difficulty of jig design, improves processing efficiency, and facilitates material cutting.

[0061] Furthermore, a first avoidance groove 64 is provided on the second punch base 61 , and the first avoidance groove 64 is used to avoid the side edge of the second half portion 32 when the side edge of the first half portion 31 is folded.

[0062] Therefore, when the first half portion 31 is folded, the second half portion 32 is not affected, thereby ensuring that the folding process of the first half portion 31 proceeds smoothly.

[0063] Optionally, a plurality of second inserts 65 are provided on the second punch base 61 , and the second inserts 65 are used to limit the outer edge of a sequence of semi-finished products 3 .

[0064] Therefore, through the limiting effect of the second insert 65, the first-order semi-finished product 3 is ensured to be accurately positioned during the folding process, the folding quality is improved, and the consistency and accuracy of subsequent bending forming are ensured.

[0065] Optionally, see Figures 10 to 12 The bending jig 7 includes a third punch base 71 and a third hand punch 72. The second-order semi-finished product 4 is placed on the third punch base 71. The third punch base 71 is provided with a bending groove 73. The third hand punch 72 cooperates with the bending groove 73 to press the connection between the first half 31 and the middle part 33 into the bending groove 73, and makes the first half 31 and the second half 32 in an upright state.

[0066] Thus, the connection portion 12 of the finished nickel sheet 1 is formed by the precise cooperation of the bending groove 73 and the third hand punch 72, and the first half 31 and the second half 32 are vertically bent to form two side planes 11 of the finished nickel sheet 1, meeting the modeling requirements. In addition, compared with the traditional punch press, the bending jig 7 is small in size, easy to move and operate, does not rely on precision molds, and has low equipment cost.

[0067] Furthermore, a second avoidance groove 74 is provided on one side of the third lever punch 72 close to the first half portion 31 , and the second avoidance groove 74 is used to avoid the folded two side edges of the first half portion 31 when the first half portion 31 is erected.

[0068] Therefore, the design of the second avoidance groove 74 ensures that the folded side of the first half 31 is not disturbed during the erection process, further improving the accuracy and stability of the bending forming.

[0069] Optionally, a plurality of third inserts 75 are provided on the third punch base 71 , and the third inserts 75 are used to limit the outer edge of the second-order semi-finished product 4 .

[0070] Therefore, through the limiting effect of the third insert 75, the second-order semi-finished product 4 is ensured to be accurately positioned during the bending process, the bending quality is improved, and the two side planes 11, the connecting part 12 and the folded edge 13 of the finished nickel sheet 1 are ensured to be accurately formed.

[0071] In summary, the finished nickel sheet 1 obtained by the nickel sheet bending forming method and the matching fixture processing has guaranteed product quality and consistency, low production cost, low production technology difficulty, high production efficiency, and can meet the forming requirements of more shapes.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A nickel sheet bending method, characterized in that: include: Step 1: cutting the raw material sheet (2) by a trimming jig (5) to obtain a first-order semi-finished product (3), wherein the first-order semi-finished product (3) is in the shape of a flat plate, and comprises a first half portion (31), a second half portion (32), and a middle portion (33) located between the first half portion (31) and the second half portion (32); Step 2: using a folding jig (6) to symmetrically fold the two sides of the first half portion (31) to obtain a second-order semi-finished product (4); Step three: fold the first half (31) and the second half (32) relative to the middle part (33) respectively by a bending jig (7) to obtain a finished nickel sheet (1), wherein the first half (31) and the second half (32) are parallel to each other, and the two side edges of the folded first half (31) face the second half (32).

2. The nickel sheet bending forming method according to claim 1, characterized in that: The trimming jig (5) comprises a first punch base (51) and a first hand-operated punch (52), the raw material sheet (2) is placed on the first punch base (51), a forming hole (53) is provided on the first punch base (51), and the first hand-operated punch (52) cooperates with the forming hole (53) to punch out two symmetrical notches on both sides of the raw material sheet (2), so that the part between the two notches is formed into the middle part (33).

3. The nickel sheet bending forming method according to claim 2, characterized in that: A plurality of first inserts (54) are arranged on the first punch base (51), and the first inserts (54) are used to limit the outer edge of the raw material sheet (2).

4. The nickel sheet bending forming method according to claim 1, characterized in that: The folding jig (6) comprises a second punch base (61) and a second hand-operated punch (62). The first-order semi-finished product (3) is placed on the second punch base (61). The second punch base (61) is provided with a forming groove (63). The second hand-operated punch (62) cooperates with the forming groove (63) to fold the two side edges of the first half (31) to a set angle.

5. The nickel sheet bending forming method according to claim 4, characterized in that: The two side edges of the first half part (31) are folded step by step, and when one side edge of the first half part (31) is pressed into the forming groove (63), the other side edge of the first half part (31) is tilted up.

6. The nickel sheet bending forming method according to claim 5, characterized in that: The second punch base (61) is provided with a first avoidance groove (64), and the first avoidance groove (64) is used to avoid the side edge of the second half part (32) when the side edge of the first half part (31) is folded.

7. The nickel sheet bending forming method according to claim 4, characterized in that: A plurality of second inserts (65) are arranged on the second punch base (61), and the second inserts (65) are used to limit the outer edge of the first-order semi-finished product (3).

8. The nickel sheet bending forming method according to claim 1, characterized in that: The bending jig (7) comprises a third punch base (71) and a third hand-operated punch (72), the second-order semi-finished product (4) is placed on the third punch base (71), a bending groove (73) is provided on the third punch base (71), the third hand-operated punch (72) cooperates with the bending groove (73) to press the connection between the first half part (31) and the middle part (33) into the bending groove (73), and makes the first half part (31) and the second half part (32) in an upright state.

9. The nickel sheet bending forming method according to claim 8, characterized in that: A second avoidance groove (74) is provided on one side of the third hand-operated punch (72) close to the first half portion (31), and the second avoidance groove (74) is used to avoid the folded two side edges of the first half portion (31) when the first half portion (31) is erected.

10. The nickel sheet bending forming method according to claim 8, characterized in that: A plurality of third inserts (75) are arranged on the third punch base (71), and the third inserts (75) are used to limit the outer edge of the second-order semi-finished product (4).

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