Battery case plate u-shaped bending device

Abstract

This utility model discloses a U-shaped bending device for battery casing plates, including a frame with a positioning seat for supporting the battery casing plate. A lower pressing seat is vertically connected to the frame and is located above the positioning seat. The lower pressing seat can move up and down relative to the positioning seat. When the lower pressing seat descends to press the battery casing plate on the positioning seat, the positioning seat and the lower pressing seat clamp the battery casing plate. The frame has bending mechanisms on both sides of the lower pressing seat. Each bending mechanism includes an extrusion head connected to the frame and capable of moving up, down, and translating relative to the positioning seat. The two extrusion heads are respectively translated to the upper part of the battery casing plate at the corresponding edge of the positioning seat and press down, so that the two sides of the battery casing plate are bent downward with the two side edges of the positioning seat as the bending lines. This utility model has a simple structure, high bending efficiency, and avoids damage to the battery casing plate.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a U-shaped bending device for battery casing plates. Background Technology

[0002] The lithium battery casing, as the protective shell of the battery, is a closed sheet metal bending structure. During the production process, the metal sheet needs to be bent to form a U-shaped plate. Currently, bending is mainly performed by bending equipment. The bending equipment first limits the metal sheet, and then the end of the sheet is pressed down by the pressing structure to achieve bending. Existing bending equipment has two problems in actual use: first, the limiting of the metal sheet is not firm enough, which makes it easy to deviate during the bending process and affect the bending accuracy; second, the pressing structure is easy to press on the bending line when pressing down on the metal sheet, which can scratch the surface of the metal sheet in severe cases. Utility Model Content

[0003] This utility model designs a U-shaped bending device for battery casing plates, including a frame. The frame is provided with a positioning seat for supporting the battery casing plate. A lower pressing seat is vertically connected to the frame and is located above the positioning seat. The lower pressing seat can move up and down relative to the positioning seat. When the lower pressing seat descends to press the battery casing plate on the positioning seat, the positioning seat and the lower pressing seat clamp the battery casing plate. The frame is provided with bending mechanisms on both sides of the lower pressing seat. Each bending mechanism includes an extrusion head connected to the frame and capable of moving up, down and translating relative to the positioning seat. The two extrusion heads are respectively translated to the upper part of the battery casing plate at the corresponding edge of the positioning seat and press down, so that the two sides of the battery casing plate are bent downward with the two side edges of the positioning seat as the bending lines.

[0004] Preferably, the pressing seat includes a fixed seat and a pressing head connected to the bottom of the fixed seat. The frame is provided with a first driving device. The driving end of the first driving device is connected to the fixed seat to drive the fixed seat to perform lifting and lowering actions, thereby driving the pressing head to perform pressing actions, so that the pressing head presses down to the positioning seat.

[0005] Preferably, the frame has mounting seats on both the front and rear sides of the lower pressure seat. Each mounting seat has a first guide rail, on which a first slider is slidably fitted. The extrusion head is connected to the first slider. The frame has a second driving device, the drive end of which is connected to the first slider to drive the first slider to move up and down relative to the mounting seat. The first slider drives the extrusion head to move up and down. The frame also has a second guide rail that is horizontal relative to the first guide rail. The mounting seat has a second slider that is slidably fitted with the second guide rail. The frame has a third driving device, the drive end of which is connected to the second slider to drive the second slider to move horizontally. The second slider drives the mounting seat to move horizontally. Finally, the extrusion head can move up and down and horizontally relative to the positioning seat.

[0006] Further optimization includes a pressing head comprising a seat connected to a first slider, a pressing protrusion disposed on the side of the seat, the top of the pressing protrusion extending along the width direction of the battery housing plate as a pressing end, and the pressing end being rounded; the lower pressing seat and the positioning seat being rounded at the edges of the pressing protrusion respectively.

[0007] Further optimization involves providing a positioning groove along the width of the battery casing plate on the seat body, with a positioning protrusion formed at the bottom of the extrusion protrusion fitting into the positioning groove. A first connecting hole is provided in the positioning groove, and a second connecting hole is provided on the extrusion protrusion. The first connecting hole and the second connecting hole are connected by bolts or screws, so that the extrusion protrusion can be detachably connected to the seat body.

[0008] Further optimization involves ensuring that the opposing surfaces of the positioning seat and the pressure seat are both clamping surfaces, and these clamping surfaces are planar.

[0009] Further optimization involves providing protrusions flush with the clamping surface on both sides of the positioning seat facing the extrusion protrusion along the width direction of the battery casing plate. The protrusions are integrally formed with the positioning seat, and the edges of the protrusions facing the extrusion protrusion serve as bending lines.

[0010] Further optimization involves providing a limiting group at both sides of the pressing head. The limiting group includes two limiting blocks, which are respectively connected to the front and rear of the pressing seat. The bottom of the two limiting blocks extends downward to be higher than the bottom of the pressing seat, so that a limiting groove is formed between the two limiting blocks and the bottom of the pressing seat. When the pressing seat is pressed down to the positioning seat, the positioning seat is precisely engaged in the limiting groove.

[0011] Further optimization is made so that the first drive device, the second drive device, and the third drive device are one or more combinations of pneumatic cylinders, hydraulic cylinders, or electric cylinders.

[0012] The technical advantages of this invention are as follows: the battery casing plate is located between the lower pressure seat and the positioning seat. The lower pressure seat presses down onto the positioning seat, clamping the battery casing plate between them to form a positioning. The central part of the battery casing plate is clamped and positioned by the lower pressure seat and the positioning seat, which are distributed vertically, ensuring that the battery casing plate is stably clamped. Bending mechanisms are provided on both sides of the positioning seat. The extrusion head of the bending mechanism can move up, down, and horizontally under the drive of two driving devices, thereby pressing down on both sides of the battery casing plate to bend it, thus forming a U-shaped battery casing plate. The top of the extrusion head and the edge of the lower pressure seat are rounded. If the top of the extrusion head and the edge of the lower pressure seat were sharp corners or flat, the extrusion head would easily collide with the edge of the lower pressure seat during pressing down, causing chipping. Rounded corners can avoid this situation and also prevent the extrusion head from scratching the surface of the battery casing plate. The edge of the positioning seat is also rounded to prevent damage to the inner side of the bent battery casing plate. In summary, this invention has a simple structure, high bending efficiency, and avoids damage to the battery casing plate. Attached Figure Description

[0013] Figure 1 This is a 3D view of the overall structure of the battery casing before bending.

[0014] Figure 2 This is a front view of the overall structure of the battery casing before bending.

[0015] Figure 3 It is the three-dimensional structure of the battery casing after bending. Figure 1 .

[0016] Figure 4 It is the three-dimensional structure of the battery casing after bending. Figure 2 .

[0017] Figure 5 This is a structural diagram of the positioning seat, the lower pressure seat, and the extrusion head.

[0018] Figure 6 This is a bottom view of the lower pressure seat structure.

[0019] Figure 7 This is a three-dimensional structural diagram of the positioning base.

[0020] In the diagram: 1. Frame; 2. Battery casing plate; 3. Positioning seat; 4. Pressing seat; 41. Fixed seat; 42. Pressing head; 5. Bending mechanism; 51. Extrusion head; 511. Seat body; 512. Extrusion protrusion; 513. Extrusion end; 6. Edge; 7. Bending line; 10. First driving device; 11. First guide rail; 12. First slider; 13. Second driving device; 14. Second guide rail; 15. Second slider; 16. Third driving device; 17. Positioning groove; 18. First connecting hole; 19. Second connecting hole; 20. Clamping surface; 21. Protrusion; 22. Limiting group; 221. Limiting block; 222. Limiting groove; 23. Mounting seat. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0022] This utility model includes a frame 1, such as Figure 1 , Figure 2 and Figure 3 As shown, the frame 1 is provided with a positioning seat 3 for supporting the battery housing plate 2. The battery housing plate 2 in this invention is a flat plate structure. A lower pressure seat 4 is vertically connected to the frame 1. The lower pressure seat 4 is located above the positioning seat 3 and can move up and down relative to the positioning seat 3. The positioning seat 3 is located below the center of the battery housing plate 2 and supports it. When the lower pressure seat 4 descends to press down on the battery housing plate 2 on the positioning seat 3, the positioning seat 3 and the lower pressure seat 4 clamp the battery housing plate 2. The opposing surfaces of the positioning seat 3 and the lower pressure seat 4 are both flat, and both flat surfaces are clamping surfaces 20. Each flat surface has a... With a fixed width, the lower pressure seat 4 and the positioning seat 3 are located on the upper and lower surfaces of the battery housing plate 2 respectively to clamp the battery housing plate 2, thereby positioning the battery housing plate 2. The frame 1 is provided with bending mechanisms 5 on both sides of the lower pressure seat 4. Each bending mechanism 5 includes an extrusion head 51 set on the frame 1. The extrusion head 51 can move up and down and translate relative to the positioning seat 3. The two extrusion heads 51 are respectively translated to the upper part of the battery housing plate 2 at the corresponding edge 6 of the positioning seat 3 and pressed down, so that the two sides of the battery housing plate 2 are bent downward with the two side edges 6 of the positioning seat 3 as bending lines 7, thereby forming a U-shaped battery housing plate 2.

[0023] Specifically, the pressing seat 4 includes a fixed seat 41 and a pressing head 42. The pressing head 42 is connected to the bottom of the fixed seat 41. The frame 1 is provided with a first driving device 10. The driving end of the first driving device 10 is connected to the fixed seat 41 to drive the fixed seat 41 to perform lifting and lowering actions, thereby driving the pressing head 42 to perform a pressing action, so that the pressing head 42 is pressed down to the positioning seat 3. The pressing head 42 is a block-shaped structure extending along the width direction of the battery casing plate 2. Its top is connected to the fixed seat 41, and its bottom surface is used as the clamping surface 20 to directly press down onto the clamping surface 20 of the positioning seat 3, thereby realizing the clamping of the battery casing plate 2 by the pressing seat 4 and the positioning seat 3. The first driving device 10 can be a cylinder, a hydraulic cylinder or an electric cylinder.

[0024] Furthermore, such as Figure 4 As shown, the frame 1 has mounting seats 23 on the front and rear sides of the lower pressure seat 4, respectively. Each mounting seat 23 has a first guide rail 11, and a first slider 12 is slidably fitted onto each first guide rail 11. The extrusion head 51 is connected to the first slider 12. The frame 1 has a second drive device 13, the drive end of which is connected to the first slider 12 to drive the first slider 12 to move up and down, thereby causing the extrusion head 51 to move up and down relative to the mounting seat 23. The frame 1 also has a second guide rail 14, which is positioned relative to the first guide rail 1. The first slider 12 is slidably mounted on the second guide rail 14. The sliding direction of the second slider 15 is perpendicular to the sliding direction of the first slider 12. The mounting base 23 is connected to the second slider 15. The frame 1 is equipped with a third drive device 16. The drive end of the third drive device 16 is connected to the second slider 15 to drive the second slider 15 to perform translational movement. The second slider 15 drives the mounting base 23 and the first slider 12 to move together. Finally, the extrusion head 51 can move up and down and translate relative to the positioning base 3 to realize the downward pressing action of the extrusion head 51.

[0025] Furthermore, such as Figure 6 As shown, the extrusion head 51 includes a seat 511 connected to the first slider 12. An extrusion protrusion 512 is provided on the side of the seat 511 facing the battery housing plate 2. The extrusion protrusion 512 extends horizontally along the width direction of the battery housing plate 2. The top of the extrusion protrusion 512 is rounded so that the top of the extrusion protrusion 512 serves as the extrusion end 513, so that the surface of the battery housing plate 2 will not be damaged when it is pressed against and pressed down. The edges 6 of the pressing seat 4 and the positioning seat 3 facing the extrusion protrusion 512 are also rounded accordingly, so that the edge 6 is not damaged when the battery housing plate 2 is bent downward.

[0026] Furthermore, the base 511 is provided with a positioning groove 17 along the width direction of the battery housing plate 2. The longitudinal section of the positioning groove 17 is inverted L-shaped. The extrusion protrusion 512 is located in the positioning groove 17 to form a limiting fit. The positioning groove 17 is provided with a first connecting hole 18, which is distributed on two surfaces of the positioning groove 17. The extrusion protrusion 512 is provided with a second connecting hole 19. In this embodiment, the first connecting holes 18 on each surface of the positioning groove 17 are distributed in a straight line along the width direction of the extrusion protrusion 512, and the second connecting holes 19 are also distributed in a straight line accordingly. The first connecting hole 18 on each surface and the corresponding second connecting hole 19 are connected by bolts or screws so that the extrusion protrusion 512 can be detachably connected to the base 511. This not only facilitates the loading and unloading of the extrusion protrusion 512, but also allows the extrusion protrusion 512 to be unloaded by disassembling the fasteners, making it easy to replace extrusion protrusions 512 of different lengths, thereby enabling the clamping of battery housing plates 2 of different widths.

[0027] Furthermore, such as Figure 7 As shown, the positioning seat 3 has elongated protrusions 21 on both sides facing the extrusion protrusion 512. The protrusions 21 are arranged along the width direction of the battery housing plate 2. The top of the protrusion 21 is flush with the clamping surface 20, that is, the top of the protrusion 21 is flush with the clamping surface 20 to form a plane. The protrusion 21 and the positioning seat 3 are integrally formed. The edge 6 of the protrusion 21 facing the extrusion protrusion 512 serves as the bending line 7. The bottom of the outer side of the protrusion 21 is inclined inward, so that the edge 6 of the positioning seat 3, which serves as the bending line 7, protrudes outward. The edge 6 of the pressing seat 4 is slightly recessed relative to the positioning seat 3, so that the edge 6 of the positioning seat 3 protrudes relative to the edge 6 of the pressing seat 4. Since the battery housing plate 2 has a certain thickness, the extrusion end 513 of the extrusion protrusion 512 can be pressed down from the recessed position of the pressing seat 4, and then a pressing arc is formed along the edge 6 of the positioning seat 3, which facilitates bending and forming in one go, without the need to repeatedly press down to achieve the bending angle.

[0028] Furthermore, such as Figure 5 As shown, the two sides of the pressing head 42 are provided with limiting groups 22. The limiting groups 22 include two limiting blocks 221. The two limiting blocks 221 are respectively connected to the front and rear of the pressing seat 4. The bottom of the two limiting blocks 221 extends downward to be higher than the bottom of the pressing seat 4, so that the two limiting blocks 221 and the bottom of the pressing seat 4 form a limiting groove 222. When the pressing seat 4 is pressed down to the positioning seat 3, the positioning seat 3 is just inserted into the limiting groove 222, so that the pressing seat 4 can be positioned on the positioning seat 3, so that the pressing seat 4 is aligned with the positioning seat 3, to ensure the stability of clamping and prevent the pressing seat 4 from being misaligned relative to the positioning seat 3.

[0029] Furthermore, the first drive device 10, the second drive device 13, and the third drive device 16 are one or more combinations of pneumatic cylinders, hydraulic cylinders, or electric cylinders. Their specific working principles and structures are conventional technologies and will not be elaborated here.

[0030] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A battery casing plate U-shaped bending device, characterized in that, Includes a frame (1), on which a positioning seat (3) is provided for supporting a battery casing plate (2). A lower pressure seat (4) is vertically connected to the frame (1), the lower pressure seat (4) being located above the positioning seat (3). The lower pressure seat (4) can move up and down relative to the positioning seat (3). When the lower pressure seat (4) descends to press down on the battery casing plate (2) on the positioning seat (3), the positioning seat (3) and the lower pressure seat (4) clamp the battery casing plate (2). The frame (1) is provided with bending mechanisms (5) on both sides of the lower pressure seat (4). Each bending mechanism (5) includes an extrusion head (51) connected to the frame (1) and capable of lifting and translating relative to the positioning seat (3). The two extrusion heads (51) are respectively moved to the upper part of the battery housing plate (2) at the corresponding edge (6) of the positioning seat (3) and pressed down, so that the two sides of the battery housing plate (2) are bent downward with the two side edges (6) of the positioning seat (3) as bending lines (7).

2. The battery casing plate U-shaped bending device according to claim 1, characterized in that, The pressing seat (4) includes a fixed seat (41) and a pressing head (42) connected to the bottom of the fixed seat (41). The frame (1) is provided with a first driving device (10). The driving end of the first driving device (10) is connected to the fixed seat (41) to drive the fixed seat (41) to perform lifting and lowering actions, thereby driving the pressing head (42) to perform pressing actions, so that the pressing head (42) presses down to the positioning seat (3).

3. The battery casing plate U-shaped bending device according to claim 1, characterized in that, The frame (1) has mounting seats (23) on both the front and rear sides of the lower pressure seat (4). Each mounting seat (23) has a first guide rail (11) and a first slider (12) slidably fitted on the first guide rail (11). The extrusion head (51) is connected to the first slider (12). The frame (1) has a second drive device (13). The drive end of the second drive device (13) is connected to the first slider (12) to drive the first slider (12) to move up and down relative to the mounting seat (23). The first slider (12) drives the extrusion head (51) to move up and down. The frame (1) is provided with a second guide rail (14) that is horizontal relative to the first guide rail (11). The mounting base (23) is provided with a second slider (15) that forms a sliding fit with the second guide rail (14). The frame (1) is provided with a third drive device (16). The drive end of the third drive device (16) is connected to the second slider (15) to drive the second slider (15) to perform translational movement. The second slider (15) drives the mounting base (23) to perform translational movement. Finally, the extrusion head (51) can perform lifting and translational movement relative to the positioning base (3).

4. The battery casing plate U-shaped bending device according to claim 2, characterized in that, The extrusion head (51) includes a seat (511) connected to the first slider (12), and an extrusion protrusion (512) is provided on the side of the seat (511). The top of the extrusion protrusion (512) extends along the width direction of the battery housing plate (2) to serve as an extrusion end (513), and the extrusion end (513) is rounded. The lower pressure seat (4) and the positioning seat (3) are respectively rounded towards the edge (6) of the extrusion protrusion (512).

5. The battery casing plate U-shaped bending device according to claim 4, characterized in that, The base (511) is provided with a positioning groove (17) along the width direction of the battery housing plate (2). The bottom of the extrusion protrusion (512) forms a positioning protrusion (21) that fits into the positioning groove (17). The positioning groove (17) is provided with a first connecting hole (18). The extrusion protrusion (512) is provided with a second connecting hole (19). The first connecting hole (18) and the second connecting hole (19) are connected by bolts or screws so that the extrusion protrusion (512) can be detachably connected to the base (511).

6. The battery casing plate U-shaped bending device according to claim 5, characterized in that, The opposing surfaces of the positioning seat (3) and the pressing seat (4) are both clamping surfaces (20), and the clamping surfaces (20) are planes.

7. The battery casing plate U-shaped bending device according to claim 2, characterized in that, The positioning seat (3) has protrusions (21) flush with the clamping surface (20) on both sides of the extrusion protrusion (512) along the width direction of the battery housing plate (2). The protrusions (21) are integrally formed with the positioning seat (3), and the edge (6) of the protrusions (21) facing the extrusion protrusion (512) serves as a bending line (7).

8. The battery casing plate U-shaped bending device according to claim 7, characterized in that, The two sides of the pressing head (42) are provided with a limiting group (22). The limiting group (22) includes two limiting blocks (221). The two limiting blocks (221) are respectively connected to the front and rear of the pressing seat (4). The bottom of the two limiting blocks (221) extends downward to be higher than the bottom of the pressing seat (4), so that the two limiting blocks (221) and the bottom of the pressing seat (4) form a limiting groove (222). When the pressing seat (4) is pressed down to the positioning seat (3), the positioning seat (3) is just inserted into the limiting groove (222).

9. The battery casing plate U-shaped bending device according to claim 7, characterized in that, The first drive device (10), the second drive device (13) and the third drive device (16) are one or more combinations of cylinders, hydraulic cylinders or electric cylinders.

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