Cover plate punching tool and cover plate processing equipment

Abstract

The utility model relates to battery cover plate processing technical field discloses cover plate punching tool and cover plate processing equipment, include: punch, on the projection plane perpendicular to the thickness direction of punch, the orthographic projection of punch includes two straight line edges and two circular arc edges, two straight line edges are opposite interval settings along the width direction of punch, two circular arc edges are opposite interval settings along the length direction of punch, two circular arc edges are connected with two straight line edges on the same side two ends respectively, the central angle of circular arc edge is greater than 180 DEG, the distance between two straight line edges along the width direction is a, the radius of circular arc edge is r, satisfy a 2 * r, the unit of a and r all are mm. The utility model uses punch to form the initial hole on the metal sheet, the initial hole has the straight line hole edge corresponding with straight line edge and the circular arc hole edge corresponding with circular arc edge, and the metal sheet is more than the remaining material at the circular arc hole edge at the straight line hole edge, guarantees the height consistency of the flanging structure formed by processing.

Description

Technical Field

[0001] This utility model relates to the field of battery cover plate processing technology, specifically to cover plate punching tooling and cover plate processing equipment. Background Technology

[0002] Terminals are components in a battery used to input and output current. They can be mounted on a cover plate and secured to the upper surface by a flange structure on the cover plate. However, for racetrack-shaped terminals, the processing of the flange structure can easily lead to poor uniformity in its height, affecting the effective riveting of the terminal. Utility Model Content

[0003] In view of this, the present invention provides a cover plate punching fixture and cover plate processing equipment to solve the problem in the prior art that when processing the flange structure of the racetrack-shaped pole, it is easy to cause poor uniformity of the flange structure height, which affects the riveting effect of the pole.

[0004] In a first aspect, this utility model provides a cover plate punching fixture, comprising: The punch, on a projection plane perpendicular to its thickness direction, has two straight edges and two arc edges in its orthographic projection. The two straight edges are spaced apart relative to each other along the width direction of the punch, and the two arc edges are spaced apart relative to each other along the length direction of the punch. The two arc edges are respectively connected to the two ends of the two straight edges on the same side. The central angle of the arc edge is greater than 180°. The distance between the two straight edges along the width direction is 'a', and the radius of the arc edge is 'r', satisfying that 'a' < 2 × 'r', where the units of 'a' and 'r' are both mm.

[0005] Beneficial effects: Using a punch to process an initial hole in a metal sheet, the initial hole has a straight hole edge corresponding to a straight edge and a circular hole edge corresponding to a circular arc edge. The metal sheet leaves more material at the straight hole edge than at the circular arc edge. Therefore, when processing the metal sheet along the periphery of the initial hole to form a convex edge, the height of the convex edge can be made to be more consistent, thereby ensuring the consistency of the height of the final flange structure and improving the riveting effect of the flange structure on the pole structure.

[0006] Secondly, this utility model also provides a cover plate processing equipment, including the above-mentioned cover plate punching fixture. Attached Figure Description

[0007] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0008] Figure 1 This is a schematic diagram of a punch and support structure according to an embodiment of the present utility model; Figure 2 for Figure 1 A top view of the punch and supporting structure shown; Figure 3 for Figure 1 The front view of the punch and supporting structure is shown. Figure 4 This is a schematic diagram of the cover plate punching fixture according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the punch, through hole, and support structure of this utility model as an orthographic projection on a projection plane perpendicular to the thickness direction. Figure 6 This is a schematic diagram of the initial hole on the metal plate according to an embodiment of the present invention; Figure 7 for Figure 6 A cross-sectional view along the AA direction; Figure 8 This is a schematic diagram of the protruding edge in an embodiment of the present utility model; Figure 9 This is a schematic diagram of the flange structure and cantilever structure of an embodiment of the present utility model.

[0009] Explanation of reference numerals in the attached figures: 1. Punch; 11. Straight edge; 12. Rounded edge; 2. Supporting structure; 21. Through hole; 3. Fixing structure; 100. Metal sheet; 101. Initial hole; 102. Raised edge; 103. Flanged structure; 104. Cantilever structure. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0011] The following is combined with Figures 1 to 9 The following describes embodiments of the present invention.

[0012] According to an embodiment of the present invention, a cover plate punching fixture is provided, comprising: a punch 1, on a projection plane perpendicular to the thickness direction of the punch 1, the orthographic projection of the punch 1 includes two straight edges 11 and two arc edges 12, the two straight edges 11 are arranged relatively spaced along the width direction of the punch 1, the two arc edges 12 are arranged relatively spaced along the length direction of the punch 1, the two arc edges 12 are respectively connected to the two ends of the two straight edges 11 on the same side, the central angle of the arc edge 12 is greater than 180°, the distance between the two straight edges 11 along the width direction is a, the radius of the arc edge 12 is r, satisfying a < 2 × r, where the units of a and r are both mm.

[0013] Using the cover plate punching fixture of this embodiment, the punch 1 is used to process an initial hole 101 on the metal plate 100. The initial hole 101 has a straight hole edge corresponding to the straight edge 11 and an arc hole edge corresponding to the arc edge 12. The metal plate 100 leaves more material at the straight hole edge than at the arc hole edge. Therefore, when processing the metal plate 100 along the periphery of the initial hole 101 to form a convex edge 102, the height of the convex edge 102 can be made to be consistent at all points, thereby ensuring the consistency of the height of the finally processed flange structure 103 and improving the riveting effect of the flange structure 103 on the pole structure.

[0014] It is worth noting that for racetrack-shaped pole posts, the orthographic projection of the flange structure formed on the cover plate in the projection plane perpendicular to the thickness direction of the cover plate is also racetrack-shaped. Therefore, in related technologies, the initial hole formed on the metal sheet during the processing of the flange structure is a racetrack-shaped hole. However, when a convex edge is formed by stamping along the periphery of the initial hole, the material feeding height of the metal sheet in the straight section of the initial hole in the racetrack shape is less than the material feeding height of the metal sheet in the arc section of the initial hole in the racetrack shape, resulting in poor height consistency of the convex edge, which in turn leads to poor height consistency of the final flange structure.

[0015] Therefore, when the punch 1 of this embodiment is used to process the initial hole 101 on the metal sheet 100, by limiting the outer contour shape of the punch 1, the shape of the initial hole 101 is not a standard racetrack-shaped hole. At this time, the arc-shaped hole edge is not a semi-circular arc, but a curved arc (see [reference]). Figure 6 This makes the distance between the two straight hole edges closer, and the metal sheet 100 has more material left at the straight hole edges to compensate for the material feeding difference between the straight segment and the arc segment when processing the convex edge 102, so that the height of the convex edge 102 in the straight segment and the arc segment tends to be consistent.

[0016] It should be noted that the aforementioned feeding height refers to the height of the vertical edge formed when the metal sheet 100 around the initial hole 101 is punched from a horizontal state to a vertical state.

[0017] It needs to be further explained that, such as Figures 6 to 9 As shown, when processing the metal sheet 100 into a cover plate with a flange structure 103, firstly, an initial hole 101 is punched out on the metal sheet 100 using a punch 1. Then, the metal sheet 100 along the periphery of the initial hole 101 is punched out to form a protruding edge 102. Finally, the portion of the protruding edge 102 near the inner periphery is pressed down to form a cantilever structure 104, and the remaining portion of the protruding edge 102 forms the flange structure 103.

[0018] In one embodiment, such as Figure 2 As shown, the distance 'a' between the two straight sides 11 along the width direction and the radius 'r' of the arc side 12 satisfy 0.05 ≤ 2 × 'ra' ≤ 1.5, where the units of 'a' and 'r' are both mm. This setting further ensures the consistency of the height of the convex edge 102 formed by machining the metal plate 100 around the initial hole 101.

[0019] It is worth noting that when the value of 2×ra is too large, the metal sheet 100 leaves too much material at the edge of the straight hole, which can easily cause the height of the protruding edge 102 in the straight section to be greater than its height in the arc section, affecting the consistency of the height of the protruding edge 102. When the value of 2×ra is too small, the metal sheet 100 leaves too little material at the edge of the straight hole, which is insufficient to compensate for the difference in material flow between the straight and arc sections, and will still affect the consistency of the height of the protruding edge 102.

[0020] Optionally, 2×ra can be any value from 0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5 or a value between any two values.

[0021] In one embodiment, such as Figure 2 and Figure 3 As shown, the thickness of punch 1 is b along the thickness direction, and a and b satisfy 0.4≤a / b≤10, where the units of a and b are both mm. This setting ensures the structural strength of punch 1 while avoiding material waste caused by excessive thickness.

[0022] It is worth noting that if the value of a / b is too large, the thickness of punch 1 may be too small, resulting in lower structural strength of punch 1, making it prone to deformation or even damage during punching. If the value of a / b is too small, the thickness of punch 1 may be too large, leading to excessive material consumption and waste.

[0023] Optionally, a / b can be any value from 0.4, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or a value between any two values.

[0024] Furthermore, in one embodiment, such as Figure 3 As shown, along the thickness direction, the thickness b of punch 1 satisfies 1 ≤ b ≤ 60 mm. This setting ensures the structural strength of punch 1 while avoiding material waste caused by excessive thickness.

[0025] It is worth noting that if the value of b is too small, the structural strength of punch 1 will be low, making it prone to deformation or even damage during punching. If the value of b is too large, punch 1 will consume too much material, resulting in waste.

[0026] Optionally, b can take any value from 1, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, or a value between any two values.

[0027] In one embodiment, such as Figures 1 to 5 As shown, the cover plate punching fixture also includes a support structure 2, which has a through hole 21. The punch 1 is adapted to penetrate and exit the through hole 21 along the thickness direction. The support structure 2 supports the metal sheet 100 and cooperates with the punch 1 to achieve punching.

[0028] Furthermore, in one embodiment, such as Figure 5 As shown, on the projection plane perpendicular to the thickness direction, the orthographic projection area of ​​punch 1 is S1, and the orthographic projection area of ​​through hole 21 is S2, satisfying 0.3≤S1 / S2≤0.95, where the units of S1 and S2 are both mm. 2 This configuration avoids interference between the punch 1 and the supporting structure 2 while ensuring the structural strength of the supporting structure 2.

[0029] It is worth noting that if the value of S1 / S2 is too large, the gap between the punch 1 and the through hole 21 will be too small during punching, which may easily lead to interference between the punch 1 and the supporting structure 2. If the value of S1 / S2 is too small, the opening range of the through hole 21 may be too large, resulting in an excessive weakening of the structural strength of the supporting structure 2, affecting the structural strength of the supporting structure 2, and easily causing deformation or even damage to the supporting structure 2.

[0030] Optionally, the value of S1 / S2 can be any one of 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, or 0.95, or a value between any two values.

[0031] In one embodiment, such as Figure 3 and Figure 5 As shown, along the thickness direction, the thickness of the supporting structure 2 is c, and S2 and c satisfy 10 ≤ S2 / c ≤ 95, where the unit of S2 is mm. 2 The unit of c is mm. This design ensures the structural strength of the supporting structure 2 while avoiding material waste caused by excessive thickness of the supporting structure 2.

[0032] It is worth noting that if the value of S2 / c is too large, the opening range of the through hole will be too large and the supporting structure will be too thin, resulting in low structural strength of the supporting structure. Under stress during the punching process, it will be prone to deformation or even damage. If the value of S2 / c is too small, it will easily lead to the supporting structure 2 being too thick, resulting in excessive material consumption and waste.

[0033] Optionally, the value of S2 / c can be any one of the following: 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, or a value between any two of these.

[0034] In one embodiment, such as Figure 3 As shown, along the thickness direction, the thickness c of the supporting structure 2 satisfies 0.5≤c≤20, where c is in mm. This setting ensures the structural strength of the supporting structure 2 while avoiding material waste caused by excessive thickness.

[0035] It is worth noting that if the value of c is too large, the supporting structure 2 will be too thick, resulting in excessive material consumption and waste. If the value of c is too small, the supporting structure 2 will be too thin, making it prone to deformation or even damage during the punching process.

[0036] Optionally, c can take any value from 0.5, 1, 3, 5, 8, 10, 11, 13, 15, 18, 20, or a value between any two values.

[0037] In one embodiment, such as Figure 5 As shown, on the projection plane perpendicular to the thickness direction, the orthographic projection area of ​​the supporting structure 2 is S3, which satisfies 0.05≤S2 / S3≤0.98, where the units of S2 and S3 are both mm. 2 This configuration avoids interference between the punch 1 and the supporting structure 2 while ensuring the structural strength of the supporting structure 2.

[0038] It is worth noting that if the values ​​of S2 / S3 are too large, the opening range of the through hole 21 may be too large, resulting in an excessive weakening of the structural strength of the supporting structure 2, affecting its structural strength, and potentially causing deformation or even damage. If the values ​​of S2 / S3 are too small, the opening range of the through hole 21 may be too small, leading to insufficient clearance between the punch 1 and the through hole 21 during punching, which could cause interference between the punch 1 and the supporting structure 2.

[0039] Optionally, the value of S2 / S3 can be any one of 0.05, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, or 0.98, or a value between any two of them.

[0040] Specifically, in one embodiment, such as Figure 5 As shown, on the projection plane perpendicular to the thickness direction, the projected area S1 of the punch 1 satisfies 80≤S1≤1000, where S1 is in mm. 2 .

[0041] Optionally, S1 can be any value from 80, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 or a value between any two values.

[0042] Specifically, in one embodiment, such as Figure 5 As shown, on the projection plane perpendicular to the thickness direction, the orthographic projection area S2 of the through hole 21 satisfies 85≤S2≤1500, where S2 is in mm. 2 .

[0043] Optionally, S2 can be any value from 85, 105, 205, 305, 405, 505, 605, 705, 805, 905, 1005, 1105, 1205, 1305, 1405, 1500, or a value between any two values.

[0044] Specifically, in one embodiment, such as Figure 5 As shown, on the projection plane perpendicular to the thickness direction, the orthographic projection area S3 of the supporting structure 2 satisfies 100≤S3≤1800, where S3 is in mm. 2 .

[0045] Optionally, the value of S3 can be any one of 100, 150, 250, 350, 450, 550, 650, 750, 850, 950, 1100, 1200, 1300, 1400, 1500 or a value between any two of these values.

[0046] In one embodiment, such as Figure 2 As shown, on the projection plane perpendicular to the thickness direction, along the length direction of the punch 1, the longest distance between the two arc edges 12 is h, and the dimension of the through hole 21 along the length direction is d, satisfying 0.6≤h / d≤0.95, where the units of h and d are both mm. This setting avoids interference between the punch 1 and the supporting structure 2 while ensuring the structural strength of the supporting structure 2.

[0047] It is worth noting that if the value of h / d is too large, the gap between the punch 1 and the through hole 21 will be too small during punching, which may easily lead to interference between the punch 1 and the supporting structure 2. If the value of h / d is too small, the opening range of the through hole 21 may be too large, resulting in an excessive weakening of the structural strength of the supporting structure 2, affecting the structural strength of the supporting structure 2, and easily causing deformation or even damage to the supporting structure 2.

[0048] Optionally, h / d can be any value from 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, or a value between any two values.

[0049] Specifically, in one embodiment, such as Figure 2 As shown, along the length of punch 1, the longest distance h between the two arc edges 12 satisfies 15≤h≤80, where h is in mm.

[0050] Optionally, h can take any value from 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, or a value between any two values.

[0051] In one embodiment, such as Figure 2 As shown, on the projection plane perpendicular to the thickness direction, along the length direction, the distance between the arc edge 12 and the wall of the corresponding through hole 21 is e, which satisfies 0.1≤e≤8, where e is in mm. This setting avoids interference between the punch 1 and the supporting structure 2 while ensuring the structural strength of the supporting structure 2.

[0052] It is worth noting that if the value of e is too small, the gap between the punch 1 and the through hole 21 will be too small during punching, which may cause interference between the punch 1 and the supporting structure 2. If the value of e is too large, the opening range of the through hole 21 may be too large, resulting in an excessive weakening of the structural strength of the supporting structure 2, affecting the structural strength of the supporting structure 2, and easily causing deformation or even damage to the supporting structure 2.

[0053] Optionally, the value of e can be any one of 0.1, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, or a value between any two values.

[0054] In one embodiment, such as Figure 2 As shown, on the projection plane perpendicular to the thickness direction, the dimension of the through hole 21 along the width direction is f, which satisfies 0.65≤2×r / f≤0.98, where the units of r and f are both mm. This setting avoids interference between the punch 1 and the supporting structure 2 while ensuring the structural strength of the supporting structure 2.

[0055] It is worth noting that if the value of 2×r / f is too large, the gap between the punch 1 and the through hole 21 will be too small during punching, which may easily lead to interference between the punch 1 and the supporting structure 2. If the value of 2×r / f is too small, the opening range of the through hole 21 may be too large, resulting in an excessive weakening of the structural strength of the supporting structure 2, affecting the structural strength of the supporting structure 2, and easily causing deformation or even damage to the supporting structure 2.

[0056] Optionally, 2×r / f can be any value from 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 0.98, or a value between any two values.

[0057] In one embodiment, such as Figure 2 As shown, on the projection plane perpendicular to the thickness direction, along the width direction, the distance between the straight edge 11 and the wall of the opposite through hole 21 is g, which satisfies 0.15≤g≤10, where g is in mm. This setting avoids interference between the punch 1 and the supporting structure 2 while ensuring the structural strength of the supporting structure 2.

[0058] It is worth noting that if the value of g is too small, the gap between the punch 1 and the through hole 21 will be too small during punching, which may cause interference between the punch 1 and the supporting structure 2. If the value of g is too large, the opening range of the through hole 21 may be too large, resulting in an excessive weakening of the structural strength of the supporting structure 2, affecting the structural strength of the supporting structure 2, and easily causing deformation or even damage to the supporting structure 2.

[0059] Optionally, g can take any value from 0.15, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, or a value between any two values.

[0060] It is worth noting that, in this embodiment, as Figure 2As shown, the through hole 21 is a square hole, that is, the orthographic projection of the through hole 21 on the projection plane perpendicular to the thickness direction is square. The length of the square hole is d and the width of the square hole is f.

[0061] Specifically, in one embodiment, such as Figure 2 As shown, the distance a between the two straight sides 11 along the width direction satisfies 8≤a≤30, where the unit of a is mm.

[0062] Optionally, the value of 'a' can be any one of the following: 8, 10, 12, 15, 18, 20, 22, 25, 28, 30, or a value between any two of these.

[0063] Specifically, in one embodiment, such as Figure 2 As shown, the radius r of the arc edge 12 satisfies 4≤r≤16, where r is in mm.

[0064] Optionally, r can take any value from 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 or a value between any two values.

[0065] In one embodiment, such as Figure 4 As shown, the cover plate punching fixture also includes a fixing structure 3. The fixing structure 3 is arranged opposite to the supporting structure 2 along the thickness direction. The fixing structure 3 is adapted to move closer to or further away from the supporting structure 2 along the thickness direction. On the projection plane perpendicular to the thickness direction, the orthographic projection of the fixing structure 3 does not coincide with the orthographic projection of the through hole 21. By setting the fixing structure 3, the metal plate 100 is pressed onto the supporting structure 2, and then the punch 1 is used for punching, which avoids the metal plate 100 from moving during the punching process and ensures the punching accuracy.

[0066] It is worth noting that after punching a hole at one location, the fixing structure 3 is lifted away from the supporting structure 2, driving the metal sheet 100 to move a certain distance. Then, the fixing structure 3 presses down on the metal sheet 100, and the punch 1 punches another hole at the same location on the metal sheet 100. Therefore, continuous punching on a single metal sheet 100 can be achieved.

[0067] According to an embodiment of the present invention, another aspect provides a cover plate processing equipment, including the aforementioned cover plate punching fixture.

[0068] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A punching fixture for a cover plate, characterized in that, include: The punch (1) has two straight sides (11) and two arc sides (12) on a projection plane perpendicular to the thickness direction of the punch (1). The two straight sides (11) are arranged relatively spaced along the width direction of the punch (1), and the two arc sides (12) are arranged relatively spaced along the length direction of the punch (1). The two arc sides (12) are respectively connected to the two ends of the two straight sides (11) on the same side. The central angle of the arc side (12) is greater than 180°. The distance between the two straight sides (11) along the width direction is a, and the radius of the arc side (12) is r, satisfying a < 2 × r. The units of a and r are both mm.

2. The cover plate punching tooling of claim 1, wherein, The distance a between the two straight sides (11) along the width direction and the radius r of the arc side (12) satisfy 0.05≤2×ra≤1.5, where the units of a and r are both mm.

3. The cover plate punching fixture according to claim 1, characterized in that, Along the thickness direction, the thickness of the punch (1) is b, and a and b satisfy 0.4≤a / b≤10, where the units of a and b are both mm.

4. The cover plate punching fixture according to claim 3, characterized in that, Along the thickness direction, the thickness b of the punch (1) satisfies 1≤b≤60, where b is in mm.

5. The cover plate punching fixture according to any one of claims 1 to 4, characterized in that, The cover plate punching fixture also includes a support structure (2), the support structure (2) having a through hole (21), and the punch (1) being adapted to penetrate and exit the through hole (21) along the thickness direction.

6. The cover plate punching tooling of claim 5, wherein, On the projection plane perpendicular to the thickness direction, the orthographic projection area of ​​the punch (1) is S1, and the orthographic projection area of ​​the through hole (21) is S2, satisfying 0.3≤S1 / S2≤0.95, where the units of S1 and S2 are both mm. 2 .

7. The cover plate punching fixture according to claim 6, characterized in that, Along the thickness direction, the thickness of the supporting structure (2) is c, and S2 and c satisfy 10≤S2 / c≤95, where the unit of S2 is mm. 2 The unit of c is mm.

8. The cover plate punching fixture according to claim 7, characterized in that, Along the thickness direction, the thickness c of the supporting structure (2) satisfies 0.5≤c≤20, where c is in mm.

9. The cover plate piercing tool of claim 6, wherein, On the projection plane perpendicular to the thickness direction, the orthographic projection area of ​​the supporting structure (2) is S3, which satisfies 0.05≤S2 / S3≤0.98, where the units of S2 and S3 are both mm. 2 .

10. The cover plate punching fixture according to claim 5, characterized in that, On the projection plane perpendicular to the thickness direction, along the length direction of the punch (1), the longest distance between the two arc edges (12) is h, and the dimension of the through hole (21) along the length direction is d, satisfying 0.6≤h / d≤0.95, where the units of h and d are both mm.

11. The cover plate punching fixture according to claim 10, characterized in that, Along the length direction of the punch (1), the longest distance h between the two arc edges (12) satisfies 15≤h≤80, where h is in mm.

12. The cover plate punching fixture according to claim 10, characterized in that, On the projection plane perpendicular to the thickness direction, along the length direction, the distance between the arc edge (12) and the wall of the corresponding through hole (21) is e, which satisfies 0.1≤e≤8, where e is in mm.

13. The cover plate punching fixture according to claim 5, characterized in that, On the projection plane perpendicular to the thickness direction, the dimension of the through hole (21) along the width direction is f, which satisfies 0.65≤2×r / f≤0.98, where the units of r and f are both mm.

14. The cover plate punching fixture according to claim 13, characterized in that, On the projection plane perpendicular to the thickness direction, along the width direction, the distance between the straight edge (11) and the wall of the corresponding through hole (21) is g, which satisfies 0.15≤g≤10, where g is in mm.

15. The cover plate punching fixture according to any one of claims 1 to 4, characterized in that, The distance a between the two straight sides (11) along the width direction satisfies 8≤a≤30, where a is in mm.

16. The cover plate punching fixture according to any one of claims 1 to 4, characterized in that, The radius r of the arc edge (12) satisfies 4≤r≤16, and the unit of r is mm.

17. The cover plate punching fixture according to claim 5, characterized in that, The cover plate punching fixture also includes a fixing structure (3), which is arranged opposite to the supporting structure (2) along the thickness direction. The fixing structure (3) is adapted to be close to or away from the supporting structure (2) along the thickness direction. On the projection plane perpendicular to the thickness direction, the orthographic projection of the fixing structure (3) does not coincide with the orthographic projection of the through hole (21).

18. The cover plate punching fixture according to claim 9, characterized in that, On the projection plane perpendicular to the thickness direction, the orthographic projection area S1 of the punch (1) satisfies 80≤S1≤1000, where S1 is in mm. 2 ; And / or, On the projection plane perpendicular to the thickness direction, the orthographic projection area S2 of the through hole (21) satisfies 85≤S2≤1500, where S2 is in mm. 2 ; And / or, On the projection plane perpendicular to the thickness direction, the orthographic projection area S3 of the supporting structure (2) satisfies 100≤S3≤1800, where S3 is in mm. 2 .

19. A cover plate processing equipment, characterized in that, The cover plate punching tool includes any one of claims 1 to 18.

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