Cover plate processing tooling

Abstract

This utility model relates to the field of battery structure processing and manufacturing technology, and discloses a cover plate processing fixture, including: a lower mold base, comprising a base body and an abutment section, wherein one side surface of the base body along the thickness direction is a first surface, the abutment section includes at least two straight segments and at least two arc segments, the at least two arc segments are arranged relatively spaced along the length direction of the base body, and the at least two straight segments are arranged relatively spaced along the width direction of the base body and located between the two arc segments, adjacent arc segments and straight segments are spaced apart to form a gap segment, the first surface forms a support surface on the outer periphery of the abutment section; a material distribution punch, arranged relative to the first surface along the thickness direction, and adapted to be close to or away from the first surface, the outer periphery edge of the material distribution punch projected onto the first surface is located within the support surface. This utility model sets a gap segment between the straight segments and the arc segments, allowing excess material to continue flowing through the gap segment, avoiding material accumulation problems, and ensuring the uniformity of the cantilever structure thickness.

Description

Technical Field

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

[0002] Terminals are components in a battery used for current input and output. They can be mounted on a cover plate with cantilever and flange structures. The cantilever structure supports the terminal, and the flange structure secures the upper surface of the terminal with rivets. However, for racetrack-shaped terminals, material accumulation at the corners can easily occur during the fabrication of the cantilever structure, affecting its forming effect. Utility Model Content

[0003] In view of this, the present invention provides a cover plate processing fixture to solve the problem that material accumulation is likely to occur at the corner when processing a racetrack-shaped pole to form a cantilever structure, which affects the forming effect of the cantilever structure.

[0004] This utility model provides a cover plate processing fixture, including: a lower mold base, comprising a base and an abutment section, wherein one side surface of the base along the thickness direction is a first surface, the abutment section protrudes from the first surface, the abutment section includes at least two straight segments and at least two arc segments, the at least two arc segments are arranged relatively spaced along the length direction of the base, the at least two straight segments are arranged relatively spaced along the width direction of the base and located between the two arc segments, adjacent arc segments and straight segments are spaced apart to form a gap segment, the first surface forms a supporting surface on the outer periphery of the abutment section; a material distribution punch, arranged relative to the first surface along the thickness direction and adapted to be close to or away from the first surface, the outer periphery edge of the orthographic projection of the material distribution punch on the first surface is located within the supporting surface.

[0005] Beneficial effects: The material distribution punch presses down on a portion of the thickness of the convex edge to form a cantilever structure, and the remaining portion of the convex edge forms a flange structure. During the process of the material distribution punch pressing down on the portion of the thickness of the convex edge, the material deforms and flows. By setting an abutment section, the flow position of the material is limited, ensuring the thickness of the cantilever structure. Furthermore, a gap section is set between the straight section and the arc section, allowing excess material to continue flowing through the gap section, avoiding material accumulation problems and ensuring the uniformity of the thickness of the cantilever structure. Attached Figure Description

[0006] 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.

[0007] Figure 1 This is a schematic diagram of the structure of a lower mold base according to an embodiment of the present utility model; Figure 2 for Figure 1 The top view of the lower mold base shown; Figure 3 for Figure 1 The front view of the lower mold base is shown below; Figure 4 This is a schematic diagram of the lower die base, the material distribution punch, and the positioning structure according to an embodiment of the present utility model; Figure 5 for Figure 4 Top view of the lower mold base and positioning structure; Figure 6 This is a schematic diagram of the orthographic projection of the base, abutment section, positioning structure, material dispensing punch, and punching punch on the first surface according to an embodiment of the present utility model. Figure 7 This is a schematic diagram of the initial hole on the metal plate according to an embodiment of the present invention; 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.

[0008] Explanation of reference numerals in the attached figures: 1. Lower die base; 11. Base body; 111. First surface; 112. Straight edge; 113. Arc edge; 12. Abutment section; 121. Straight section; 122. Arc section; 13. Nodal section; 2. Material distribution punch; 3. Positioning structure; 4. Punching punch; 100. Metal sheet; 101. Initial hole; 102. Raised edge; 103. Flanged structure; 104. Cantilever structure. Detailed Implementation

[0009] 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.

[0010] The following is combined with Figures 1 to 9 The following describes embodiments of the present invention.

[0011] According to an embodiment of the present invention, a cover plate processing fixture is provided, comprising: a lower mold base 1, including a base 11 and an abutment section 12, wherein one side surface of the base 11 along the thickness direction is a first surface 111, the abutment section 12 protrudes from the first surface 111, the abutment section 12 includes at least two straight segments 121 and at least two arc segments 122, the at least two arc segments 122 are arranged relatively spaced along the length direction of the base 11, the at least two straight segments 121 are arranged relatively spaced along the width direction of the base 11 and located between the two arc segments 122, adjacent arc segments 122 and straight segments 121 are spaced apart to form a gap segment 13, the first surface 111 forms a supporting surface on the outer periphery of the abutment section 12; and a material distribution punch 2, arranged opposite to the first surface 111 along the thickness direction and adapted to be close to or away from the first surface 111, the outer periphery edge of the orthographic projection of the material distribution punch 2 is located within the supporting surface.

[0012] Using the cover plate processing fixture of this embodiment, the material distribution punch 2 presses down a portion of the thickness of the convex edge 102 to form a cantilever structure 104, and the remaining portion of the convex edge 102 forms a flange structure 103. During the process of the material distribution punch 2 pressing down a portion of the thickness of the convex edge 102, the material deforms and flows. The material flow position is limited by setting the abutment section 12 to ensure the thickness of the cantilever structure 104. Furthermore, a gap section 13 is set between the straight section 121 and the arc section 122 so that excess material can continue to flow through the gap section 13, avoiding material accumulation problems and ensuring the uniformity of the thickness of the cantilever structure 104.

[0013] It is worth noting that in the relevant technology, the connecting section is a racetrack shape that is closed circumferentially, that is, the two arc segments are connected to the two ends of the two straight segments on the same side. Researchers have found that when the lower mold base is used to process and form the flange structure 103 and the cantilever structure 104 in the relevant technology, material accumulation in the cantilever structure 104 is likely to occur at the connection between the arc segment and the straight segment (corresponding to the arc part and the straight part of the racetrack-shaped protrusion 102).

[0014] Therefore, in this embodiment, please refer to Figure 1 and Figure 2 This prevents the arc segment 122 and the straight segment 121 from being connected, meaning there is a gap between the end of the arc segment 122 and the end of the straight segment 121, allowing material to flow to the gap and thus solving the material accumulation problem during the processing of the cantilever structure 104.

[0015] It should be noted that you should refer to [link / reference]. Figures 7 to 9 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. Then, the metal sheet 100 along the periphery of the initial hole 101 is punched out to form a protruding edge 102. Finally, a material distribution punch 2 is used to press down the part of the protruding edge 102 near the inner periphery to form a cantilever structure 104. The remaining part of the protruding edge 102 forms the flange structure 103.

[0016] Specifically, in this embodiment, such as Figure 1 and Figure 2 As shown, the arc segment 122 is provided with two segments spaced apart relative to each other along the length direction of the base 11, and the straight segment 121 is provided with two segments spaced apart relative to each other along the width direction of the base 11. Therefore, four empty segments 13 can be formed.

[0017] In one embodiment, such as Figure 2 As shown, along the length direction, the distance between the end of the arc segment 122 and the end of the adjacent straight segment 121 is 'a', which satisfies 0.2≤a≤5, where 'a' is in mm. This setting ensures the limiting effect on material flow while facilitating the flow of excess material into the empty segment 13.

[0018] It is worth noting that if the value of 'a' is too large, the size of the abutment section 12 will be too small, which will not be conducive to limiting the flow position of the material and will affect the overall thickness of the cantilever structure 104. If the value of 'a' is too small, the opening range of the empty section 13 will be too small, and excess material will not be easy to flow into the empty section 13, and there is still a risk of material accumulation in the cantilever structure 104.

[0019] Optionally, the value of 'a' can be any one of the following: 0.2, 0.5, 0.8, 1, 1.2, 1.5, 1.8, 2, 2.2, 2.5, 2.8, 3, 3.2, 3.5, 3.8, 4, 4.2, 4.5, 4.8, 5, or a value between any two of these values.

[0020] Furthermore, in one embodiment, such as Figure 2 As shown, the central angle of the arc segment 122 is α°, satisfying 100≤α≤170. This setting ensures the limiting effect on material flow while facilitating the flow of excess material into the empty segment 13.

[0021] It is worth noting that if the value of α is too small, the size of the arc segment 122 will be too small, which will not be conducive to limiting the flow position of the material and will affect the overall thickness of the cantilever structure 104. If the value of α is too large, the opening range of the gap segment 13 will be too small, and excess material will not be easy to flow into the gap segment 13, and there is still a risk of material accumulation in the cantilever structure 104.

[0022] Optionally, α can take any value from 100, 110, 120, 130, 140, 150, 160, 170, or a value between any two values.

[0023] Furthermore, in one embodiment, such as Figure 2 As shown, the length of the straight segment 121 along the length direction is b, which satisfies 10≤b≤50, where b is in mm. This setting ensures the limiting effect on material flow while facilitating the flow of excess material into the empty segment 13.

[0024] It is worth noting that if the value of b is too small, the size of the straight segment 121 will be too small, which will not be conducive to limiting the flow position of the material and will affect the overall thickness of the cantilever structure 104. If the value of b is too large, the opening range of the gap segment 13 will be too small, and excess material will not be easy to flow into the gap segment 13, and there is still a risk of material accumulation in the cantilever structure 104.

[0025] Optionally, the value of b can be any one of 10, 15, 20, 25, 30, 35, 40, 45, 50, or a value between any two of them.

[0026] In one embodiment, such as Figure 2 and Figure 3 As shown, the wall thickness of the arc segment 122 is c along its radial direction, and the height of the arc segment 122 protruding from the first surface 111 along its thickness direction is e1. The wall thickness c and the height e1 of the arc segment 122 satisfy 0.1 ≤ e1 / c ≤ 1, where c and e1 are in mm. This configuration ensures both the structural strength of the arc segment 122 and its ability to restrict material flow.

[0027] It is worth noting that if the value of e1 / c is too large, the structural strength of the arc segment 122 will be low, and the arc segment 122 will be prone to breakage or even shattering under impact during use. If the value of e1 / c is too small, it will not effectively block the flow of material along the thickness direction, affecting the forming effect of the cantilever structure 104.

[0028] Optionally, e1 / c can take any value from 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, or a value between any two values.

[0029] In one embodiment, such as Figure 2 and Figure 3 As shown, the wall thickness of the straight segment 121 is d along the width direction, and the height of the straight segment 121 protruding from the first surface 111 along the thickness direction is e2. The wall thickness d and the height e2 of the straight segment 121 satisfy 0.1≤e2 / d≤1, where the units of d and e2 are mm. This configuration ensures both the structural strength of the straight segment 121 and its ability to restrict material flow.

[0030] It is worth noting that if the value of e2 / d is too large, the structural strength of the straight segment 121 will be low, and the straight segment 121 will be prone to breakage or even shattering under impact during use. If the value of e2 / d is too small, it will not effectively block the flow of material along the thickness direction, affecting the forming effect of the cantilever structure 104.

[0031] Optionally, e2 / d can take any value from 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, or a value between any two values.

[0032] Furthermore, in one embodiment, such as Figure 2 As shown, along the radial direction of the arc segment 122, the wall thickness of the arc segment 122 is c, which satisfies 0.3≤c≤3, where c is in mm. This design ensures the structural strength of the arc segment 122 while avoiding material waste caused by excessive thickness of the arc segment 122.

[0033] It is worth noting that if the value of c is too large, the arc segment 122 may become too thick, resulting in increased material consumption and waste. If the value of c is too small, the arc segment 122 may become too thin, leading to lower structural strength and making it prone to breakage or even shattering under impact during use.

[0034] Optionally, c can take any value from 0.3, 0.5, 0.8, 1, 1.3, 1.5, 1.8, 2, 2.3, 2.5, 2.8, 3, or a value between any two values.

[0035] Furthermore, in one embodiment, such as Figure 2 As shown, the wall thickness of the straight segment 121 along the width direction is d, which satisfies 0.3≤d≤3, where d is in mm. This design ensures the structural strength of the straight segment 121 while avoiding material waste caused by excessive thickness of the straight segment 121.

[0036] It is worth noting that if the value of d is too large, it may cause the straight segment 121 to be too thick, resulting in increased material consumption and waste. If the value of d is too small, it may cause the straight segment 121 to be too thin, resulting in lower structural strength and making it prone to breakage or even shattering under impact during use.

[0037] Optionally, d can take any value from 0.3, 0.5, 0.8, 1, 1.3, 1.5, 1.8, 2, 2.3, 2.5, 2.8, 3, or a value between any two values.

[0038] It should be noted that the wall thickness of the arc segment 122 and the wall thickness of the straight segment 121 can be the same or different, and can be set according to the actual situation.

[0039] Furthermore, in one embodiment, the height of the abutment section 12 along the thickness direction is e, satisfying 0.1≤e≤1.5, where e is in mm. This setting ensures the restrictive effect of the abutment section 12 on material flow while avoiding material waste caused by the abutment section 12 being too high.

[0040] It is worth noting that if the value of e is too large, it may cause the abutment section 12 to be too high, resulting in increased material consumption and waste. If the value of e is too small, it will not effectively block the flow of material along the thickness direction, affecting the forming effect of the cantilever structure 104.

[0041] Optionally, e can take any value from 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.

[0042] It should be noted that the height of the connecting segment 12 can be the height of the arc segment 122 (i.e., e=e1) or the height of the straight segment 121 (i.e., e=e2). Of course, under normal circumstances, the height of the arc segment 122 is equal to the height of the straight segment 121, i.e., e=e1=e2.

[0043] It is worth noting that the height of the abutment section 12 needs to be specifically set according to the thickness of the required cantilever structure 104.

[0044] In one embodiment, such as Figure 3 As shown, the thickness of the substrate 11 along the thickness direction is f, which satisfies 0.5≤f≤60, where f is in mm. This setting ensures the structural strength of the substrate 11 while avoiding material waste caused by excessive thickness of the substrate 11.

[0045] It is worth noting that if the value of f is too large, the substrate 11 may become too thick, resulting in excessive material consumption and waste. If the value of f is too small, the substrate 11 may become too thin, leading to low structural strength and making it prone to cracking and damage when subjected to impact during use.

[0046] Optionally, f can take any value from 0.5, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, or a value between any two values.

[0047] In one embodiment, such as Figure 1 and Figure 2 As shown, the outer periphery of the first surface 111 includes at least two straight edges 112 and at least two arc edges 113. The at least two arc edges 113 are spaced apart relative to each other along the length direction, and the at least two straight edges 112 are spaced apart relative to each other along the width direction and connect the ends of the at least two arc edges 113. Along the length direction, the distance between the arc edge 113 and the adjacent arc segment 122 is g, and along the width direction, the distance between the straight edge 112 and the adjacent straight segment 121 is h, satisfying 0.6≤g / h≤0.95, where g and h are in mm. This arrangement can increase the flow range of material in the straight portion of the racetrack-shaped convex edge during material distribution, avoiding material shortage problems in the straight portion when forming the cantilever structure.

[0048] Optionally, g / h can be any value from 0.6, 0.62, 0.65, 0.68, 0.7, 0.72, 0.75, 0.78, 0.8, 0.82, 0.85, 0.88, 0.9, 0.92, 0.95, or a value between any two values.

[0049] It is worth noting that, in this embodiment, as Figure 2 As shown, the outer periphery of the first surface 111 includes two straight edges 112 and two arc edges 113, which together form a racetrack shape. The line connecting the center of the arc edge 113 and the center of the arc segment 122 is set along the length direction of the base 11, and the line connecting the center of the straight edge 112 and the center of the straight segment 121 is set along the width direction of the base 11.

[0050] In one embodiment, such as Figure 4 and Figure 5As shown, the cover plate processing fixture also includes a positioning structure 3. The positioning structure 3 is spaced apart from the first surface 111 along the thickness direction. The positioning structure 3 has a ring-shaped structure, and its orthographic projection around the first surface 111 surrounds the outer periphery of the lower mold base 1. By using the positioning structure 3 to surround the outer periphery of the protruding edge 102, the outer periphery of the protruding edge 102 is positioned, which facilitates the material distribution of the protruding edge 102.

[0051] Furthermore, in one embodiment, such as Figure 5 As shown, the wall thickness of positioning structure 3 is i, which satisfies 0.5≤i≤5, where i is in mm. This design ensures the structural strength of positioning structure 3 while reducing its space requirements.

[0052] It is worth noting that if the value of i is too large, the positioning structure 3 may become too thick, resulting in excessive space occupation and potential interference with surrounding components. If the value of i is too small, the positioning structure 3 may become too thin, leading to lower structural strength and making it prone to cracking under stress during use.

[0053] Optionally, the value of i can be any one of 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, or 5, or a value between any two values.

[0054] In one embodiment, such as Figure 6 As shown, the cover plate processing fixture also includes a punching punch 4. The punching punch 4 is disposed opposite to the first surface 111 along the thickness direction and is adapted to be close to or away from the first surface 111. The outer peripheral edge of the orthographic projection of the punching punch 4 on the first surface 111 is located between the outer peripheral edge of the orthographic projection of the material distribution punch 2 on the first surface 111 and the orthographic projection of the abutment section 12 on the first surface 111. The punching punch 4 is used to punch a hole at the center position of the cantilever structure 104 formed by material distribution on the convex edge 102, and the excess material on the cantilever structure 104 is punched away to form a standard racetrack-shaped hole body used as an pole post hole.

[0055] In one embodiment, such as Figure 2 As shown, the radius of the outer edge of the arc segment 122 is r, and the distance between the outer edges of the two straight segments 121 along the width direction is j, satisfying j < 2 × r, where the units of r and j are mm. This setting can increase the flow range of material in the straight part of the racetrack-shaped convex edge during material distribution, avoiding material shortage problems in the straight part when forming the cantilever structure.

[0056] It is worth noting that in this embodiment, the arc segment 122 is a minor arc. When the arc segment 122 extends to form a complete semicircle, along the width direction, the two straight segments 121 are located between the two ends of the semicircle.

[0057] 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 tooling for processing a cover plate, characterized in that, include: The lower mold base (1) includes a base (11) and an abutment section (12). One side surface of the base (11) along the thickness direction is a first surface (111). The abutment section (12) protrudes from the first surface (111). The abutment section (12) includes at least two straight segments (121) and at least two arc segments (122). The at least two arc segments (122) are arranged relatively spaced along the length direction of the base (11). The at least two straight segments (121) are arranged relatively spaced along the width direction of the base (11) and located between the two arc segments (122). Adjacent arc segments (122) and straight segments (121) are spaced apart to form a gap segment (13). The first surface (111) forms a supporting surface on the outer periphery of the abutment section (12). The material dispensing punch (2) is disposed opposite to the first surface (111) along the thickness direction and is adapted to be close to or away from the first surface (111). The outer peripheral edge of the material dispensing punch (2) in the orthographic projection of the first surface (111) is located within the supporting surface.

2. The cover plate processing fixture according to claim 1, characterized in that, Along the length direction, the distance between the end of the arc segment (122) and the end of the adjacent straight segment (121) is a, which satisfies 0.2≤a≤5, where a is in mm.

3. The cover plate machining tooling fixture of claim 1, wherein, The central angle of the arc segment (122) is α°, which satisfies 100≤α≤170.

4. The cover plate processing fixture according to claim 1, characterized in that, Along the length direction, the length of the straight segment (121) is b, which satisfies 10≤b≤50, where b is in mm.

5. The cover plate machining tooling fixture of any one of claims 1 to 4, wherein, Along the radial direction of the arc segment (122), the wall thickness of the arc segment (122) is c, and along the thickness direction, the height of the arc segment (122) protruding from the first surface (111) is e1. The wall thickness c of the arc segment (122) and the height e1 of the arc segment (122) satisfy 0.1≤e1 / c≤1, where the units of c and e1 are mm.

6. The cover plate machining tooling fixture of any one of claims 1 to 4, wherein, Along the width direction, the wall thickness of the straight segment (121) is d, and along the thickness direction, the height of the straight segment (121) protruding from the first surface (111) is e2. The wall thickness d and the height e2 of the straight segment (121) satisfy 0.1≤e2 / d≤1, and the units of d and e2 are mm.

7. The cover plate machining tooling fixture of any one of claims 1 to 4, wherein, Along the radial direction of the arc segment (122), the wall thickness of the arc segment (122) is c, which satisfies 0.3≤c≤3, where c is in mm.

8. The cover plate machining tooling fixture of any one of claims 1 to 4, wherein, Along the width direction, the wall thickness of the straight segment (121) is d, which satisfies 0.3≤d≤3, and the unit of d is mm.

9. The cover plate processing fixture according to any one of claims 1 to 4, characterized in that, Along the thickness direction, the height of the abutment section (12) is e, which satisfies 0.1≤e≤1.5, where e is in mm.

10. The cover plate machining tooling fixture of any one of claims 1 to 4, wherein, Along the thickness direction, the thickness of the substrate (11) is f, which satisfies 0.5≤f≤60, where f is in mm.

11. The cover plate machining tooling fixture of any one of claims 1 to 4, wherein, The outer periphery of the first surface (111) includes at least two straight edges (112) and at least two arc edges (113). The at least two arc edges (113) are arranged relatively apart along the length direction, and the at least two straight edges (112) are arranged relatively apart along the width direction and connect the ends of the at least two arc edges (113). Along the length direction, the distance between the arc edge (113) and the adjacent arc segment (122) is g, and along the width direction, the distance between the straight edge (112) and the adjacent straight segment (121) is h, satisfying 0.6≤g / h≤0.95, where g and h are in mm.

12. The cover plate machining tooling fixture of any one of claims 1 to 4, wherein, The cover plate processing fixture also includes a positioning structure (3), which is spaced apart from the first surface (111) along the thickness direction. The positioning structure (3) is in a ring shape, and the orthographic projection of the positioning structure (3) on the first surface (111) surrounds the outer periphery of the orthographic projection of the lower mold base (1) on the first surface (111).

13. The cover plate machining tooling fixture of claim 12, wherein, The wall thickness of the positioning structure (3) is i, which satisfies 0.5≤i≤5, and the unit of i is mm.

14. The cover plate machining tooling fixture of any one of claims 1 to 4, wherein, The cover plate processing fixture also includes a punch (4), which is disposed opposite to the first surface (111) along the thickness direction and is adapted to be close to or away from the first surface (111). The outer peripheral edge of the punch (4) in the orthographic projection of the first surface (111) is located between the outer peripheral edge of the material distribution punch (2) in the orthographic projection of the first surface (111) and the orthographic projection of the abutment section (12) in the first surface (111).

15. The cover plate machining tooling fixture of any one of claims 1 to 4, wherein, The radius of the outer edge of the arc segment (122) is r, and the distance between the outer edges of the two straight segments (121) along the width direction is j, satisfying j < 2 × r, where the units of r and j are mm.

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