Bending equipment and production lines

Abstract

The present application provides a bending device and production line, which relate to the field of battery technology. The bending device includes a punch, a die and a first positioning member, the punch has a core; the die has a cavity and a first bearing end, the cavity opening is located at the first bearing end, the first bearing end has a first direction, and the first direction is parallel to the first bearing end; the first driving member is connected to the punch, the first driving member can drive the punch to move, and the moving path of the punch is configured to enable the core to enter and exit the cavity from the cavity opening; the first positioning member has a pair of first positioning ends, the pair of first positioning ends are used to respectively abut against the two ends of the sheet to be bent located at the first bearing end in the first direction, and the distance between the pair of first positioning ends can be adjusted. The bending device provided in the present application can bend sheets of different areas to be bent by controlling the depth of the core inserted into the cavity and adjusting the distance between the pair of first positioning ends, thereby being able to produce battery shells of various models.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a bending device and a production line. Background Art

[0002] With the rapid development of the new energy industry, lithium-ion battery energy storage systems have been widely used. The rapid iteration of large-capacity lithium batteries necessitates the corresponding upgrades in the production and manufacture of battery casings. However, existing bending equipment is only capable of producing a single type of battery casing, lacking versatility. This limits the current demand for mass production of battery casings. Furthermore, changing molds for different products involves significant complexity and cost. Summary of the Invention

[0003] In view of this, the present application provides a bending device and a production line, which can solve the problem that the existing bending device can only produce a single model of battery shells and has poor versatility, and solve the complexity and cost problems of changing molds.

[0004] This application provides the following technical solutions:

[0005] In a first aspect, the present application provides a bending device, comprising:

[0006] a male mold having a core;

[0007] A female mold, the female mold having a cavity and a first bearing end, the cavity opening of the cavity is located at the first bearing end, and the first bearing end is used to bear the plate to be bent;

[0008] a first driving member connected to the male mold, capable of driving the male mold to move, wherein a moving path of the male mold is configured to enable the core to enter and exit the mold cavity from the cavity opening;

[0009] A first positioning member, the first positioning member has a pair of first positioning ends, the pair of first positioning ends are respectively located on both sides of the cavity, and the pair of first positioning ends are used to respectively abut against the two ends of the sheet to be bent located at the first bearing end in the first direction; wherein, the distance between the pair of first positioning ends in the first direction can be adjusted, and the first direction is parallel to the first bearing end.

[0010] In one embodiment of the first aspect, the bending device further comprises:

[0011] A second positioning member, the second positioning member has a pair of second positioning ends, and the pair of second positioning ends are respectively located on both sides of the cavity; wherein, the pair of second positioning ends are used to respectively abut against the two ends of the sheet material to be bent located at the first bearing end in the second direction, and the distance between the pair of second positioning ends in the second direction can be adjusted, the second direction is parallel to the first bearing end, and the second direction and the first direction are perpendicular to each other.

[0012] In one embodiment of the first aspect, the first positioning member includes:

[0013] a pair of first clamping arms, wherein the pair of first clamping arms are sequentially arranged along the first direction, and the pair of first clamping arms are respectively located on both sides of the cavity opening;

[0014] a first adjusting portion connected to the pair of first clamping arms, the first adjusting portion being capable of adjusting the distance between the pair of first clamping arms in the first direction; wherein the first clamping arms constitute the first positioning end;

[0015] And / or, the second positioning member includes:

[0016] a pair of second clamping arms, wherein the pair of second clamping arms are sequentially arranged along the second direction, and the pair of second clamping arms are respectively located on both sides of the cavity opening;

[0017] The second adjusting portion is connected to a pair of second clamping arms, and the second adjusting portion can adjust the distance between the pair of second clamping arms in the second direction; wherein the second clamping arms constitute the second positioning end.

[0018] In one embodiment of the first aspect, the male mold comprises:

[0019] Two sub-molds, wherein the gap between a pair of the sub-molds forms the mold cavity;

[0020] a third adjusting portion, the third adjusting portion being connected to the pair of sub-moulds, and the third adjusting portion being capable of adjusting a distance between the pair of sub-moulds in the first direction;

[0021] Wherein, the first driving member and the punch are detachably connected.

[0022] In one embodiment of the first aspect, the die further comprises:

[0023] a lifting portion, the lifting portion being located in the mold cavity;

[0024] A first driving part is connected to the lifting part, and the first driving part can drive the lifting part to move from an end of the cavity away from the cavity opening to the cavity opening.

[0025] In one embodiment of the first aspect, the die further comprises:

[0026] The grabbing portion is connected to the lifting portion, and the grabbing portion can grab the portion of the bent plate close to the lifting portion.

[0027] In one embodiment of the first aspect, the gripping portion is capable of sucking a portion of the bent plate close to the lifting portion.

[0028] In one embodiment of the first aspect, the lifting portion has a second bearing end, the second bearing end is capable of abutting against the plate, and the second bearing end is configured as a planar structure; wherein the working surface of the core and the second bearing end are configured in parallel.

[0029] In one embodiment of the first aspect, the core is arranged in an eight-shaped shape on both sides of the first direction, so that the core has a large end and a small end that are relatively arranged, and the large end is close to the cavity opening.

[0030] In a second aspect, the present application further provides a production line, comprising:

[0031] A scoring device for scoring a plate to be bent to form a bending line on the surface of the plate to be bent;

[0032] A bending device, wherein the bending device is the bending device as described in any one of the above embodiments, and the bending device is used to bend the end of the scored plate once to form the plate into a U-shaped semi-finished shell;

[0033] A seam closing device, which is used to perform a secondary bend on the end of the U-shaped semi-finished shell so that the end of the U-shaped semi-finished shell can be closed and a weld is formed;

[0034] A welding device is used for welding the weld seam to obtain a finished shell.

[0035] In one embodiment of the second aspect, the scoring device comprises:

[0036] A first positioning platform, wherein the first positioning platform has a third bearing end, and the third bearing end is used to bear the plate to be bent;

[0037] a third positioning member, the third positioning member having a pair of third positioning ends; the pair of third positioning ends being used to abut against two ends of the sheet material to be bent located at the third supporting end in a third direction, respectively, the third direction being parallel to the third supporting end; wherein the distance between the pair of third positioning ends in the third direction is adjustable;

[0038] A fourth positioning member, the fourth positioning member has a pair of fourth positioning ends; the pair of fourth positioning ends are used to respectively abut against the two ends of the plate to be bent located at the third bearing end in a fourth direction, the fourth direction is parallel to the third bearing end, and the fourth direction and the third direction are perpendicular to each other; wherein the distance between the pair of fourth positioning ends in the fourth direction can be adjusted.

[0039] In one embodiment of the second aspect, the third positioning member includes:

[0040] a pair of third clamping arms, wherein the pair of third clamping arms are sequentially arranged along the third direction;

[0041] a fourth adjusting portion, the fourth adjusting portion being connected to the pair of third clamping arms, the fourth adjusting portion being capable of adjusting the distance between the pair of third clamping arms in the third direction; wherein the third clamping arms constitute the third positioning end;

[0042] And / or, the fourth positioning member includes:

[0043] a pair of fourth clamping arms, the pair of fourth clamping arms being sequentially arranged along the fourth direction;

[0044] A fifth adjusting portion is connected to a pair of the fourth clamping arms, and the fifth adjusting portion can adjust the distance between the pair of the fourth clamping arms in the fourth direction; wherein the fourth clamping arms constitute the fourth positioning end.

[0045] In one embodiment of the second aspect, a first negative pressure adsorption port is distributed on the third carrying end.

[0046] In one embodiment of the second aspect, the seaming device includes:

[0047] a second positioning platform, the second positioning platform having a fourth bearing end, the fourth bearing end having a placement area, the placement area being used to carry the U-shaped semi-finished shell;

[0048] a clamping member connected to the second positioning platform, and used for clamping the U-shaped semi-finished shell located in the placement area;

[0049] A mold core, the mold core being placed in the inner cavity of the U-shaped semi-finished shell; the outer shape of the mold core matching the inner contour of the finished shell;

[0050] a pair of extrusion members, the pair of extrusion members being located on opposite sides of the placement area;

[0051] A second driving member is connected to a pair of the extrusion members, and the second driving member can drive the pair of the extrusion members to move closer to or away from each other in a fifth direction, and the fifth direction is parallel to the fourth bearing end, so that the extrusion member can push the corresponding end of the U-shaped semi-finished shell to bend to abut against the end of the mold core away from the fourth bearing end.

[0052] In one embodiment of the second aspect, the clamping member comprises:

[0053] a pair of fifth clamping arms, wherein the pair of fifth clamping arms are respectively located on both sides of the placement area;

[0054] The second driving part is connected to the pair of the fifth clamping arms, and the second driving part can drive the pair of the fifth clamping arms to move closer to or farther from each other.

[0055] In one embodiment of the second aspect, the welding device comprises:

[0056] a welding head, the welding head facing the weld;

[0057] A third driving member is installed on the second positioning platform and is connected to the welding head. The third driving member can drive the welding head to move along the welding seam.

[0058] In one embodiment of the second aspect, the mold core has a heat dissipation cavity, the heat dissipation cavity has an air inlet and an air outlet, and the air outlet faces the weld.

[0059] In one embodiment of the second aspect, the production line further comprises:

[0060] An airtightness detection device, comprising a pair of plugs, each of the ends of the finished product housing having an opening, the pair of plugs being installed at both ends of the finished product housing to seal the finished product housing;

[0061] In which, the mold core is located in the finished shell, and one of the pair of plugs has an inflation hole, the inflation hole is connected to the air inlet, and the mold core is provided with a clearance groove on the side facing the weld, the clearance groove extends along the extension direction of the weld, and the structure is connected to the air outlet.

[0062] In one embodiment of the second aspect, the production line further comprises:

[0063] A cleaning device, comprising a support member, a cleaning flywheel, a suction member and a fourth drive member, the cleaning flywheel and the support member being rotatably connected, the fourth drive member being connected to the cleaning flywheel, the fourth drive member being capable of driving the cleaning flywheel to rotate, and the suction member being connected to the support member, the suction member being capable of sucking dust from the cleaning flywheel; wherein the support member has an insertion end, the insertion end being capable of being inserted into the inner cavity of the finished product shell, and the flywheel being located at the insertion end.

[0064] In one embodiment of the second aspect, the production line further comprises:

[0065] A robotic arm and a negative pressure suction cup, wherein the end of the robotic arm is connected to the negative pressure suction cup, and the robotic arm can drive the negative pressure suction cup to move within a preset range; wherein the marking device, the bending device, the seaming device and the welding device are all located within the preset range.

[0066] According to the bending device of the above embodiment, it is possible to bend plates of different areas by controlling the depth of the core inserted into the cavity and adjusting the distance between a pair of first positioning ends, thereby being used to produce various types of battery shells, thereby improving the versatility of the bending device; obviously, with the upgrade and iteration of the battery shell size, there is no need to significantly upgrade and transform the bending equipment, thereby reducing the cost of equipment upgrade and iteration.

[0067] In addition, the present application also relates to a production line. Since the above-mentioned bending device has the above-mentioned technical effects, the production line including the bending device should have the same technical effects, which will not be repeated here.

[0068] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 This is a schematic diagram of a first working state of a bending device in an embodiment;

[0070] Figure 2 This is a schematic diagram of a second working state of a bending device in an embodiment;

[0071] Figure 3 This is a schematic diagram of a third working state of a bending device in an embodiment;

[0072] Figure 4 A schematic structural diagram of a female mold of a bending device in one embodiment;

[0073] Figure 5 A schematic diagram of the assembly structure of a lifting portion and a first driving portion of a bending device in one embodiment;

[0074] Figure 6 A schematic diagram of the assembly structure of a core and a first driving member of a bending device in one embodiment;

[0075] Figure 7 A schematic structural diagram of a scoring device from one perspective in an embodiment;

[0076] Figure 8 A schematic structural diagram of a scoring device in an embodiment from another perspective;

[0077] Figure 9 This is a schematic diagram of a first working state of a seam-sealing device in an embodiment;

[0078] Figure 10 2. A schematic diagram of a second working state of a seam-sealing device in an embodiment;

[0079] Figure 11 A schematic structural diagram of a mold core of a seam-joining device according to an embodiment from one perspective;

[0080] Figure 12 A schematic structural diagram of a mold core of a seam-joining device in one embodiment from another perspective;

[0081] Figure 13 This is a schematic structural diagram of an air tightness detection device in an embodiment;

[0082] Figure 14 A schematic structural diagram of a cleaning device in one embodiment;

[0083] Figure 15 for Figure 14 A partial enlarged view of point A in the figure.

[0084] Description of main component symbols:

[0085] 100-plate; 110-bending line; 200-marking device; 210-fourth positioning member; 211-fourth clamping arm; 212-fifth adjusting portion; 220-third positioning member; 221-third clamping arm; 222-fourth adjusting portion; 230-first negative pressure adsorption port; 240-first positioning platform; 241-third bearing end; 300-bending device; 310-core; 320-first driving member; 330-first positioning member; 331-first clamping arm; 332-first adjusting portion; 340-die; 341-first bearing end; 342-first long groove; 343-second long groove; 344-cavity; 345-cavity opening; 350-second positioning member; 351-second adjusting portion ;352-second clamping arm;360-lifting part;361-second bearing end;362-grabbing part;370-first driving part;400-U-shaped semi-finished shell;410-weld;500-seaming device;510-clamping part;511-fifth clamping arm;512-second driving part;520-second positioning platform;521-fourth bearing end;530-extrusion part;540-core;541-air inlet;542-heat dissipation cavity;543-air outlet;544-avoidance groove;600-welding head;700-plug;710-inflating hole;800-cleaning device;810-support member;811-insertion end;820-suction member;830-flywheel;900-finished shell. DETAILED DESCRIPTION

[0086] The present invention will be further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions, and for those skilled in the art, it is not necessary to describe these related operations in detail. They will fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0087] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0088] Component numbers used herein, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0089] In the current state of the art, the production of battery aluminum casings utilizes traditional bending and welding techniques. The basic steps of this technique include: Material preparation: First, select a suitable aluminum alloy, such as 3003 or 6000 series aluminum alloys, which offer excellent corrosion resistance, workability, and weldability. Cutting: A laser cutter or shearing machine is used to cut the aluminum alloy sheet into sheets of the desired dimensions. Bending: A press brake bends the aluminum sheet into the three-dimensional shape of the battery casing. The bending process requires precise control of angles and dimensions to ensure a tight fit between the casing components. Welding: The bent aluminum sheet is then welded using methods such as TIG (tungsten inert gas welding), MIG (metal inert gas welding), or laser welding to connect the components and form a closed casing. Welding is a critical step in ensuring the sealing and strength of the casing, but it can also lead to thermal deformation and weld quality issues. Surface treatment: After welding, the casing undergoes necessary surface treatment, such as grinding, sandblasting, electrophoretic coating, or electrostatic powder coating, to enhance its corrosion resistance and appearance. Inspection and assembly: Finally, the finished product shell undergoes quality inspection, including leakage test and dimensional inspection. After passing the inspection, the battery cell is assembled, including the installation of safety valves, poles, insulation parts and other components, and finally the battery is packaged.

[0090] With the rapid development of the new energy industry, lithium-ion battery energy storage systems have been widely used. The rapid iteration of large-capacity lithium batteries requires the production and manufacturing of battery casings to keep pace. However, existing bending equipment can only produce a single type of battery casing, with poor versatility. This limits the current demand for mass production of battery casings.

[0091] Figure 1, Figure 2 、 Figure 3 and Figure 4As shown, in order to solve the above technical problems, an embodiment of the present application provides a bending device, the bending device 300 includes a punch, a die 340, a first driving member 320 and a first positioning member 330, the punch has a core 310; the die 340 has a cavity 344 and a first bearing end 341, the cavity 344 has a cavity opening 345 located at the first bearing end 341, and the first bearing end 341 is used to carry the plate 100 to be bent; the first driving member 320 is connected to the punch, and the first driving member 320 can drive the punch to move, and the moving path of the punch is configured to enable the core 310 to enter and exit the cavity 344 from the cavity opening 345; the first positioning member 330 has a pair of first positioning ends, the pair of first positioning ends are respectively located on both sides of the cavity opening 345, and the pair of first positioning ends are used to respectively abut against the two ends of the plate 100 to be bent located at the first bearing end 341 in the first direction; wherein, the distance between the pair of first positioning ends in the first direction can be adjusted, and the first direction is parallel to the first bearing end 341.

[0092] In this embodiment, the punch is the core component of the bending device 300 that actively applies the deforming force. The core 310 on the punch is designed to match the shape of the sheet material 100 to be bent. When the core 310 enters the cavity 344 of the die 340, it applies pressure to the sheet material 100 placed on the first supporting end 341 of the die 340, thereby achieving bending. The movement path of the punch ensures that the core 310 can smoothly enter and exit the cavity 344, which is a key action in the bending process. For example, the movement path of the punch is set to be perpendicular to the end face of the first supporting end 341, which is used to support the sheet material 100.

[0093] The female mold 340 defines a cavity 344 that mates with the male mold core 310. Its first support end 341 is designed to securely support the sheet material 100 to be bent, ensuring that the sheet material 100 remains in place during the bending process and prevents slippage or displacement. A cavity opening 345, located at the first support end 341, serves as a passage for the core 310 to enter and exit the cavity 344 and precisely defines the area where the sheet material 100 is deformed.

[0094] For example, in this application, the sheet material 100 is bent into a U-shape, and the cavity 344 can be configured as a groove; wherein the first supporting end 341 is configured horizontally, the sheet material 100 is placed on the first supporting end 341, and the cavity 344 is located in the middle of the sheet material 100. Thus, by driving the punch to move vertically, the portion of the sheet material 100 located at the cavity opening 345 is squeezed into the cavity 344, thereby driving the portions of the sheet material 100 located on both sides of the cavity 344 to bend to a vertical state, thereby obtaining a U-shaped semi-finished shell 400. Optionally, the cross-section of the cavity 344 is configured as a square or a rectangle.

[0095] It should be noted that, in this embodiment, the outward rebound of the sidewall of the U-shaped semi-finished shell 400 can be reduced by controlling the depth of the core 310 inserted into the cavity 344 .

[0096] In addition, if Figure 6 As shown, the first drive member 320 is responsible for driving the punch along the travel path, achieving precise pressure application on the sheet 100. This typically involves a hydraulic, pneumatic, or electric drive system to ensure stable force output and precise control. For example, the first drive member 320 is a hydraulic cylinder; of course, in other embodiments, the first drive member 320 can also be a pneumatic cylinder, an electric push rod, or the like.

[0097] Furthermore, it should be noted that the pair of first positioning ends of the first positioning member 330 play an important role in securing the ends of the sheet 100 and ensuring bending accuracy. The pair of first positioning ends are located on either side of the cavity 345 of the die 340 and are in close contact with the ends of the sheet 100 to be bent, preventing unnecessary movement or deformation of the sheet 100 during the bending process.

[0098] Of course, the adjustable distance between the first positioning ends means that the device can accommodate sheets 100 of varying widths, increasing the versatility and flexibility of the bending device 300. It will be readily understood that, for example, the first direction refers to the primary deformation direction of the sheet 100 during the bending process and is parallel to the first bearing end 341. In other words, the direction in which the first positioning member 330 abuts the ends of the sheet 100 is the first direction. The adjustable distance between them ensures that, regardless of the width of the sheet 100, optimal positioning can be achieved through adjustment, ensuring bending accuracy and consistency.

[0099] For example, the pair of first positioning ends are sequentially spaced apart in the first direction so that the pair of positioning ends are respectively located on either side of the cavity opening 345. Of course, in other embodiments, it is also possible to ensure that the pair of first positioning ends can both move along the first direction while ensuring that the pair of first positioning ends are respectively located on either side of the cavity opening 345. It is not necessary to emphasize that the pair of first positioning ends must be located on the same straight line extending along the first direction.

[0100] Of course, in this embodiment, the pair of first positioning ends can be configured to move synchronously or separately, and this is not specifically limited here. Obviously, configuring the pair of first positioning ends to move separately can further expand the scope of application of the bending device 300 provided by this application.

[0101] For example, when the plate 100 is asymmetrically bent, the asymmetrical bending is achieved by adjusting the distances between a pair of positioning ends and the cavity 345 respectively.

[0102] For example, the first positioning end is configured to be in contact with the end of the plate 100 in a plane contact manner. Of course, it can also be configured to be in an arcuate surface, a conical surface, etc.

[0103] It is easy to understand that the plate 100 has a length direction and a width direction. If it is necessary to bend the plate 100 in the length direction, the plate 100 needs to be placed on the first supporting end 341 and keep the first direction and the length direction parallel; if it is necessary to bend the plate 100 in the width direction, the plate 100 needs to be placed on the first supporting end 341 and keep the first direction and the width direction parallel.

[0104] The bending device provided herein can be used to control the depth of the core 310 inserted into the cavity 344 and adjust the distance between the pair of first positioning ends to achieve the ability to bend sheet materials 100 of varying sizes. This allows for the production of various battery casing types, improving the versatility of the bending device 300. As battery casing sizes increase, the bending equipment does not need to be significantly upgraded, thereby reducing equipment upgrade and iteration costs. Furthermore, the first positioning member 330 ensures the accuracy of the bending of the sheet material 100.

[0105] like Figure 1 and Figure 4 As shown, in some embodiments, the bending device 300 also includes a second positioning member 350, and the second positioning member 350 has a pair of second positioning ends, and the pair of second positioning ends are respectively located on both sides of the cavity 345; wherein, the pair of second positioning ends are used to respectively abut against the two ends of the sheet material 100 to be bent located at the first bearing end 341 in the second direction, and the distance between the pair of second positioning ends in the second direction can be adjusted, the second direction is parallel to the first bearing end 341, and the second direction and the first direction are perpendicular to each other.

[0106] The bending device 300 further demonstrates its highly precise and flexible design. It not only includes the aforementioned punch, die 340, first drive member 320, and first positioning member 330, but also adds a second positioning member 350 to achieve precise positioning of the sheet material 100 in two perpendicular directions. Specific advantages are as follows:

[0107] 1. Enhanced stability and precision: The combined use of the first positioning member 330 and the second positioning member 350 ensures that the sheet material 100 to be bent is precisely fixed in two mutually perpendicular directions, and can maintain the stability of the sheet material 100 even in complex or high-precision bending operations, greatly improving the bending precision and consistency of the finished product.

[0108] 2. Strong adaptability: The distance between a pair of first positioning ends and a pair of second positioning ends can be adjusted, which means that the bending device 300 can adapt to plates 100 of different sizes and specifications, improving the versatility and flexibility of the equipment and being suitable for diverse production needs.

[0109] 3. Three-dimensional control: Through precise positioning in the first and second directions, the three-dimensional spatial position of the plate 100 is actually controlled. This is crucial for difficult operations such as complex curved surfaces and multi-angle bending, and can effectively avoid distortion or deformation during the bending process.

[0110] 4. Improve efficiency and automation level: The first driving member 320 drives the precise movement of the punch, and cooperates with the automatic adjustment of the two sets of positioning parts. It can be integrated into the automated production line to achieve fast and continuous 100-degree bending of the plate, reduce manual intervention, and improve production efficiency.

[0111] For example, the plate 100 has a length direction and a width direction. If the plate 100 needs to be bent in the length direction, the plate 100 needs to be placed on the first supporting end 341 and keep the first direction parallel to the length direction and the second direction parallel to the width direction; if the plate 100 needs to be bent in the width direction, the plate 100 needs to be placed on the first supporting end 341 and keep the first direction parallel to the width direction and the second direction parallel to the length direction.

[0112] Optionally, since the first positioning member 330 and the second positioning member 350 have the same function and principle, the structures of the first positioning member 330 and the second positioning member 350 can be set to be the same, thereby reducing costs.

[0113] like Figure 4 As shown, in some embodiments, the first positioning member 330 includes a pair of first clamping arms 331 and a first adjusting portion 332, the pair of first clamping arms 331 are arranged in sequence along the first direction, and the pair of first clamping arms 331 are respectively located on both sides of the cavity opening 345; the first adjusting portion 332 is connected to the pair of first clamping arms 331, and the first adjusting portion 332 can adjust the distance between the pair of first clamping arms 331 in the first direction; wherein, the first clamping arm 331 constitutes a first positioning end.

[0114] In this embodiment, a first positioning member 330 is provided. The first positioning member 330 utilizes a pair of first clamping arms 331 to stably clamp the sheet 100. These first clamping arms 331 are arranged along a first direction, ensuring uniform pressure is applied from both sides of the sheet 100 to be bent, maintaining stability and accuracy during the bending process. The first clamping arms 331 directly contact the sheet 100, forming a first positioning end that ensures precise positioning of the sheet 100.

[0115] Secondly, the first adjustment portion 332, a key component connected to the first clamping arm 331, plays an important role in adjusting the distance. This design allows the user to adjust the distance between the first clamping arms 331 as needed to accommodate plates 100 of varying widths. This adjustability greatly enhances the versatility and adaptability of the device, reduces the frequency of replacement of positioning components due to changes in plate 100 size, and improves production efficiency.

[0116] Furthermore, the combined design of the first clamping arm 331 and the first adjustment portion 332 not only ensures ease of operation but also demonstrates the compactness and integration of the device structure. This design reduces the complexity of the device, enabling rapid adjustment and fixation of the sheet material 100 during operation, ensuring the continuity and efficiency of the bending process. Thus, the coordinated operation of the first clamping arm 331 and the first adjustment portion 332 ensures precise positioning and stable clamping of sheets 100 of varying sizes, providing important technical support for achieving efficient and high-precision bending operations.

[0117] For example, the first adjustment portion 332 includes a pair of first linear motion modules, which are respectively connected to the pair of first clamping arms 331, and can adjust the distance between the pair of first clamping arms 331 in the first direction by controlling the pair of first linear motion modules.

[0118] For example, the first linear motion module is a screw-type linear module, a linear motor-type linear module, a gear rack-type linear module, a cylinder-driven linear module, etc., which are not specifically limited here.

[0119] Of course, in order to prevent the first linear moving module from occupying the space of the first supporting end 341, a first long groove 342 extending along the first direction can be opened in the first supporting end 341, and the lower end of the first clamping arm 331 is passed through the first long groove 342, and the first linear moving module is arranged below the first supporting end 341, and then the lower end of the first clamping arm 331 is connected to the first linear moving module.

[0120] like Figure 4 As shown, in some embodiments, the second positioning member 350 includes a pair of second clamping arms 352 and a second adjusting portion 351, the pair of second clamping arms 352 are arranged in sequence along the second direction, and the pair of second clamping arms 352 are respectively located on both sides of the cavity opening 345; the second adjusting portion 351 is connected to the pair of second clamping arms 352, and the second adjusting portion 351 can adjust the distance between the pair of second clamping arms 352 in the second direction; wherein, the second clamping arm 352 constitutes a second positioning end.

[0121] In this embodiment, a second positioning member 350 is provided. The second positioning member 350 utilizes a pair of second clamping arms 352 to stably clamp the sheet 100. These second clamping arms 352 are arranged along a second direction, ensuring uniform pressure is applied from both sides of the sheet 100 to be bent, maintaining stability and accuracy during the bending process. The second clamping arms 352 directly contact the sheet 100, forming a second positioning end that ensures precise positioning of the sheet 100.

[0122] Secondly, the second adjustment portion 351, a key component connected to the second clamping arm 352, plays an important role in adjusting the distance. This design allows the user to adjust the distance between the second clamping arms 352 as needed to accommodate plates 100 of varying widths. This adjustment capability greatly enhances the versatility and adaptability of the device, reduces the frequency of replacement of positioning components due to changes in plate 100 size, and improves production efficiency.

[0123] Furthermore, the combined design of the second clamping arm 352 and the second adjustment portion 351 not only ensures ease of operation but also demonstrates the compactness and integration of the device structure. This design reduces the complexity of the device, enabling rapid adjustment and fixation of the sheet material 100 during operation, ensuring the continuity and efficiency of the bending process. Thus, the coordinated operation of the second clamping arm 352 and the second adjustment portion 351 ensures precise positioning and stable clamping of sheet materials 100 of varying sizes, providing important technical support for achieving efficient and high-precision bending operations.

[0124] For example, the second adjustment portion 351 includes a pair of second linear motion modules, which are respectively connected to a pair of second clamping arms 352, so that the distance between the pair of second clamping arms 352 in the second direction can be adjusted by controlling the pair of second linear motion modules.

[0125] For example, the second linear motion module is a screw-type linear module, a linear motor-type linear module, a gear rack-type linear module, a cylinder-driven linear module, etc., which are not specifically limited here.

[0126] Of course, in order to prevent the second linear motion module from occupying the space of the first supporting end 341, a second long groove 343 extending along the second direction can be opened on the first supporting end 341, and the lower end of the second clamping arm 352 is passed through the second long groove 343, and the second linear motion module is arranged below the first supporting end 341, and then the lower end of the second clamping arm 352 is connected to the second linear motion module.

[0127] like Figure 4As shown, in some embodiments, the punch includes two sub-molds and a third adjusting portion, and the gap between a pair of sub-molds forms a cavity 344; the third adjusting portion is connected to the pair of sub-molds, and the third adjusting portion can adjust the spacing between the pair of sub-molds in the first direction; wherein, the first driving member 320 and the punch are detachably connected.

[0128] In this application, the male mold adopts a two-sub-mold structure, with the gap between them forming a cavity 344. This design allows the size of cavity 344 to more precisely adapt to different bending requirements. At the same time, a third adjustment portion allows the spacing between the two sub-molds in the first direction to be adjusted. This not only improves the adaptability of the mold but also ensures the accuracy and consistency of each bend, making it particularly suitable for applications requiring highly customized bending dimensions. In other words, the bending device 300 provided in this application can be adapted and improved as the battery casing is upgraded, thereby reducing costs.

[0129] Furthermore, the first positioning member 330 comprises a pair of first clamping arms 331, which are arranged along the first direction on either side of the cavity opening 345 and directly contact both ends of the sheet material 100 to be bent, ensuring stable positioning of the sheet material 100 during the bending process. The first adjustment portion 332 allows for adjustment of the distance between the pair of first clamping arms 331, thereby accommodating sheets 100 of varying widths. This, combined with the adjustable configuration of the cavity 344, enhances the versatility and flexibility of the device.

[0130] Of course, since the cavity 344 can be adjusted, it is necessary to ensure that the core 310 can also be replaced, and then the core 310 of different sizes can be replaced to adapt to the cavity 344.

[0131] For example, there are multiple punches, and the multiple punches are divided into multiple types according to the size of the core 310 thereon, that is, the core 310 can be replaced according to the size of the adjusted cavity 344 to make the two compatible.

[0132] In other words, the cavity 344 is formed by the gap between the two sub-dies, and a third adjustment section is introduced to adjust the spacing between the two sub-dies in the first direction. This design allows the user to precisely adjust the size of the cavity 344 according to actual needs. This adjustment mechanism is crucial for processing sheet materials 100 of varying thicknesses or requiring specific bending angles, ensuring bending accuracy and product quality. Furthermore, the presence of multiple punches, divided into multiple types based on the size and shape of the cores 310 they carry, means the device can support a variety of different bending configurations. Users can quickly replace punches with different cores 310 as needed to match the adjusted cavity 344 size. This design greatly expands the processing range and flexibility of the equipment, making it adaptable to complex and ever-changing production tasks. Clearly, combined with these two features, this design allows operators to quickly respond to production demands for different batches or specifications without the time-consuming reconfiguration or replacement of the entire die. By simply adjusting the spacing between the sub-dies and replacing the punches, new bending tasks can be quickly adapted, significantly improving production efficiency and response speed.

[0133] like Figure 1 and Figure 5 As shown, in some embodiments, the die 340 further includes a lifting portion 360 and a first driving portion 370, and the lifting portion 360 is located in the cavity 344; the first driving portion 370 is connected to the lifting portion 360, and the first driving portion 370 can drive the lifting portion 360 to move from one end of the cavity 344 away from the cavity opening 345 to the cavity opening 345.

[0134] In this embodiment, the lifting portion 360 is located inside the cavity 344. The function of the lifting portion 360 is to assist in controlling the pressing and positioning of the plate 100 during the bending process or may participate in the initial forming of the plate 100, which helps to improve the bending accuracy and efficiency, especially for workpieces that require internal support or complex forming.

[0135] Secondly, the linkage between the first driving unit 370 and the lifting unit 360: The connection between the first driving unit 370 and the lifting unit 360 enables the lifting unit 360 to move along the interior of the cavity 344 according to control requirements, from the end away from the cavity opening 345 to a position close to the cavity opening 345. This design not only enables precise control of the sheet 100, such as providing necessary support force or assisting in positioning the sheet 100 during the bending process, but also can participate in completing specific forming actions, such as when localized indentation or pre-bending is required.

[0136] In addition, after the bending action of the plate 100 is completed, the first driving part 370 is used to drive the lifting part 360 to move, so as to push the U-shaped semi-finished shell 400 out of the cavity 344, so as to facilitate subsequent removal.

[0137] For example, during the bending process of the plate 100 , the lifting portion 360 and the core 310 can be kept in cooperation with each other to clamp the plate 100 , thereby preventing the bottom of the formed U-shaped semi-finished shell 400 from bending and deforming.

[0138] Exemplarily, the first driving part 370 is an electric push rod; of course, in other embodiments, the first driving part 370 may also be a pneumatic cylinder, a hydraulic cylinder, etc.

[0139] For example, the lifting portion 360 may be provided with a plate-shaped structure to increase the contact area with the plate 100 .

[0140] like Figure 5 As shown, in some embodiments, the die 340 further includes a grabbing portion 362 , which is connected to the lifting portion 360 , and the grabbing portion 362 can grab the portion of the bent sheet 100 close to the lifting portion 360 .

[0141] In this embodiment, the grabbing portion 362 can grab the U-shaped semi-finished shell 400 to prevent the U-shaped semi-finished shell 400 from moving with the punch, thereby separating the punch and the U-shaped semi-finished shell 400 when the punch moves out of the cavity 344.

[0142] That is, the gripping portion 362 is connected to the lifting portion 360 and can grip the bent sheet 100, especially the semi-finished product that has been formed into a U shape. The purpose of this design is to ensure the stability of the U-shaped semi-finished shell 400 in the subsequent stages of the bending operation, and to prevent the semi-finished product from being deformed or shifted due to the elastic recovery of the sheet 100 or other external forces during the process of the punch exiting the cavity 344. Of course, through the instant gripping action of the gripping portion 362, the U-shaped semi-finished shell 400 can be immediately and firmly fixed at the same time as the punch exits, avoiding additional manual operations or the intervention of complex mechanical devices to reposition or remove the semi-finished product, thereby speeding up the flow speed of the entire bending process and improving production efficiency.

[0143] It should be noted that this design enhances the adaptability of the bending device 300 to workpieces of different types and sizes, especially for materials that are easy to rebound or require fine processing. The addition of the gripping part 362 enables the equipment to handle complex bending requirements more flexibly and reduce the degree of rebound of the U-shaped semi-finished shell 400.

[0144] like Figure 5 As shown, in some embodiments, the grabbing portion 362 can absorb the portion of the bent sheet 100 close to the lifting portion 360 .

[0145] In this embodiment, an implementation of the gripping portion 362 is provided, that is, the gripping method between the gripping portion 362 and the plate 100 can be set to adsorption.

[0146] For example, a plurality of negative pressure suction ports are provided at one end of the lifting portion 360 that contacts the plate 100 , so that the U-shaped semi-finished shell 400 can be grasped by negative pressure adsorption.

[0147] An elastic pad may be provided at the end of the lifting portion 360 contacting the plate 100 , and the negative pressure suction port penetrates the elastic pad to ensure the suction force of the negative pressure suction port on the plate 100 .

[0148] like Figure 2 and Figure 5 As shown, in some embodiments, the lifting portion 360 has a second bearing end 361, which can abut against the plate 100, and the second bearing end 361 is set as a planar structure; wherein the working surface of the core 310 and the second bearing end 361 are set in parallel.

[0149] The second supporting end 361 of the lifting portion 360 is designed as a flat structure that directly contacts the sheet 100, providing a stable support platform for the sheet 100 during the bending process. This flat design helps evenly distribute the force on the sheet 100, reducing local stress concentration and preventing deformation or damage to the sheet 100. This is particularly important for thin sheets or sheets 100 that require precision machining.

[0150] Furthermore, the working surface of the core 310 is arranged parallel to the second bearing end 361, ensuring that the sheet 100 deforms along a precise, predetermined trajectory during the bending operation, avoiding inaccurate bending angles or shape distortion caused by angular deviation. This parallel arrangement is particularly critical for manufacturing parts with strict dimensional and shape requirements.

[0151] Clearly, in terms of optimizing the process flow, the second supporting end 361 of the lifting portion 360 directly supports the sheet 100, simplifying the pre-bending positioning step and improving production efficiency. Specifically, after the sheet 100 is positioned by the first positioning member 330, before initiating bending, the lifting portion 360 is raised until the second supporting end 361 is flush with the first supporting end 341. The punch is then controlled to descend to cooperate with the lifting portion to clamp the sheet 100. After the punch contacts the sheet 100, it continues to descend to perform the bending. This reduces the degree of displacement of the sheet 100 and improves bending accuracy.

[0152] In some embodiments, the core 310 is arranged in an "eight" shape on both sides in the first direction, so that the core 310 has a large end and a small end that are relatively arranged, and the large end is close to the cavity opening 345 .

[0153] In other words, both sides of the core 310 in the first direction are provided with inclined surfaces, forming an "e" shape on both sides of the core 310 in the first direction, thereby providing the core 310 with a large end and a small end. Apparently, by arranging the large end at the end of the core 310 closer to the cavity 345, the degree of springback of the U-shaped semi-finished shell 400 formed by bending the sheet material 100 can be reduced.

[0154] For example, the punch and the die 340 are arranged vertically in sequence, with the punch located above the die 340 , and the large end of the core 310 is located at the bottom, and the small end is located at the top.

[0155] For example, the height W1 of the core 310 is not less than one-third of the width W2 of the battery shell. This size is conducive to the outward rebound of the plate 100 after the U-shaped bending.

[0156] For example, to prevent sheet material 100 from rebounding after bending, core 310 can be formed into an isosceles trapezoidal shape, with the angle between the base and the waist being r, and satisfying the following: 80° ≤ r ≤ 90°. In this embodiment, the angle between the base and the waist is set to 80°. Of course, in other embodiments, the angle between the base and the waist can also be set to 82°, 84°, 86°, 87°, 89°, 90°, and so on.

[0157] In some embodiments, the present application also provides a production line, which includes a scoring device 200, a bending device 300, a joint device 500 and a welding device. The scoring device 200 is used to score the plate 100 to be bent to form a bending line 110 on the surface of the plate 100 to be bent; the bending device 300 is a bending device 300 as in any one of the above embodiments, and the bending device 300 is used to bend the end of the scored plate 100 once so that the plate 100 forms a U-shaped semi-finished shell 400; the joint device 500 is used to bend the end of the U-shaped semi-finished shell 400 twice so that the end of the U-shaped semi-finished shell 400 can be closed and form a weld 410; the welding device is used to weld the weld 410 to obtain a finished shell 900.

[0158] It's easy to understand that the scoring device 200, as the first step in the production line, precisely inscribes the bend line 110 on the surface of the sheet material 100 to be bent. This step is crucial because pre-scoring guides the material along the predetermined trajectory during bending, reducing cracking and deformation during the bending process and improving the precision and appearance of the finished product. The bending device 300, using the precision bending device 300 described above, performs a single precise bend on the scored sheet material 100, forming the U-shaped semi-finished shell 400. The ingenious design of the bending device 300, such as the adjustable positioning members and the lifting portion 360, ensures an efficient and precise bending process, enabling the rapid and stable production of a U-shaped structure that meets the requirements. The seam closing device 500, performing a secondary bend on the ends of the U-shaped semi-finished product, allows the ends to be precisely closed together, forming a continuous weld seam 410 preparation area. This step lays a good foundation for subsequent welding, ensuring the fit and seal of the shell edges. Welding device: The welding device welds the closed weld seam 410 and completes the closure of the shell using a suitable welding technique (such as laser welding, arc welding, etc.) to form a finished shell 900. Quality control during the welding process is crucial to ensure the strength and sealing of the finished product.

[0159] Since the above-mentioned bending device 300 has the above-mentioned technical effects, the production line including the bending device 300 should have the same technical effects, which will not be described in detail here.

[0160] like Figure 7 and Figure 8 As shown, in some embodiments, the scoring device 200 includes a first positioning platform 240, a third positioning member 220 and a fourth positioning member 210, the first positioning platform 240 has a third load-bearing end 241, and the third load-bearing end 241 is used to support the plate 100 to be bent; the third positioning member 220 has a pair of third positioning ends; the pair of third positioning ends are used to respectively abut against the two ends of the plate 100 to be bent located at the third load-bearing end 241 in the third direction, and the third direction is parallel to the third load-bearing end 241; wherein, the distance between the pair of third positioning ends in the third direction can be adjusted; the fourth positioning member 210 has a pair of fourth positioning ends; the pair of fourth positioning ends are used to respectively abut against the two ends of the plate 100 to be bent located at the third load-bearing end 241 in the fourth direction, and the fourth direction is parallel to the third load-bearing end 241, and the fourth direction and the third direction are perpendicular to each other; wherein, the distance between the pair of fourth positioning ends in the fourth direction can be adjusted.

[0161] In this embodiment, the first positioning platform 240 is used to support the sheet material 100 to be bent. It is equipped with a third supporting end 241 specifically for firmly supporting the sheet material 100 and ensuring accurate positioning during processing. The third positioning member 220 has a pair of third positioning ends, which contact the ends of the sheet material 100 to be bent in a third direction (assuming it is horizontal). The distance between these third positioning ends can be adjusted according to the actual width of the sheet material 100, thereby accommodating sheets 100 of different sizes and ensuring the accuracy of the marking position. The fourth positioning member 210 is arranged perpendicular to the third positioning member 220 and is also equipped with a pair of fourth positioning ends. These positioning ends contact the ends of the sheet material 100 in a fourth direction (assuming it is longitudinal). Like the third positioning member 220, the distance between the fourth positioning members 210 is also adjustable, ensuring precise alignment and fixation regardless of the length of the sheet material 100.

[0162] For example, after adjusting the positions of the third positioning member 220 and the fourth positioning member 210, the lines can be manually engraved. Alternatively, in other embodiments, the lines can also be engraved by a robotic arm.

[0163] For example, the third direction can be set parallel to the first direction, and the fourth direction can be set parallel to the second direction. Optionally, in actual operation, the third positioning member 220 is used to limit the length direction of the plate 100, and the fourth positioning member 210 is used to limit the width direction of the plate 100.

[0164] Subsequently, a bend line 110 is engraved on the sheet 100 according to the product design dimensions. The engraving device 200 operates in the same manner as a glass cutter, forming a microscopic line mark of depth and width on the sheet 100 based on the material properties and thickness of the sheet 100. In this embodiment, the width of the line mark is no greater than 0.2 mm, and the depth is no greater than 0.2 mm. Of course, in other embodiments, the width and depth of the line mark can also be set to other dimensions, which are not specifically limited here.

[0165] like Figure 7 and Figure 8 As shown, in some embodiments, the third positioning member 220 includes a pair of third clamping arms 221 and a fourth adjustment portion 222, wherein the pair of third clamping arms 221 are sequentially arranged along the third direction; the fourth adjustment portion 222 is connected to the pair of third clamping arms 221, and the fourth adjustment portion 222 can adjust the distance between the pair of third clamping arms 221 in the third direction; wherein the third clamping arms 221 constitute a third positioning end;

[0166] In this embodiment, a third positioning member 220 is provided. The third positioning member 220 utilizes a pair of third clamping arms 221 to stably clamp the sheet 100. These third clamping arms 221 are arranged along a third direction, ensuring uniform pressure is applied from both sides of the sheet 100 to be scribed, maintaining stability and accuracy during the scribe process. The third clamping arms 221 directly contact the sheet 100, forming a third positioning end that ensures precise positioning of the sheet 100.

[0167] Secondly, the fourth adjustment portion 222, a key component connected to the third clamping arm 221, plays an important role in adjusting the distance. This design allows the user to adjust the distance between the third clamping arms 221 as needed to accommodate plates 100 of varying widths. This adjustability significantly enhances the versatility and adaptability of the device, reduces the frequency of replacement of positioning components due to changes in plate 100 size, and improves production efficiency.

[0168] Furthermore, the combined design of the third clamping arm 221 and the fourth adjustment portion 222 not only ensures ease of operation but also demonstrates the compactness and integration of the device structure. This design reduces the complexity of the device, enabling rapid adjustment and fixation of the sheet material 100 during operation, ensuring the continuity and efficiency of the scoring process. Thus, the coordinated operation of the third clamping arm 221 and the fourth adjustment portion 222 ensures precise positioning and stable clamping of sheets 100 of varying sizes.

[0169] Illustratively, the fourth adjustment portion 222 includes a pair of third linear motion modules, which are respectively connected to a pair of third clamping arms 221 , and can adjust the distance between the pair of third clamping arms 221 in the third direction by controlling the pair of third linear motion modules.

[0170] For example, the third linear motion module is a screw-type linear module, a linear motor-type linear module, a gear rack-type linear module, a cylinder-driven linear module, etc., which are not specifically limited here.

[0171] Of course, in order to prevent the third linear moving module from occupying the space of the third supporting end 241, a third long groove extending along the third direction can be opened on the third supporting end 241, and the lower end of the third clamping arm 221 is passed through the third long groove, and the third linear moving module is arranged below the third supporting end 241, and then the lower end of the third clamping arm 221 is connected to the third linear moving module.

[0172] like Figure 7 and Figure 8As shown, in some embodiments, the fourth positioning member 210 includes a pair of fourth clamping arms 211 and a fifth adjusting portion 212, and the pair of fourth clamping arms 211 are arranged in sequence along the fourth direction; the fifth adjusting portion 212 is connected to the pair of fourth clamping arms 211, and the fifth adjusting portion 212 can adjust the distance between the pair of fourth clamping arms 211 in the fourth direction; wherein, the fourth clamping arm 211 constitutes a fourth positioning end.

[0173] In this embodiment, a fourth positioning member 210 is provided. The fourth positioning member 210 utilizes a pair of fourth clamping arms 211 to stably clamp the sheet 100. These fourth clamping arms 211 are arranged along a fourth direction, ensuring uniform pressure is applied from both sides of the sheet 100 to be scribed, maintaining stability and accuracy during the scribe process. The fourth clamping arms 211 directly contact the sheet 100, forming a fourth positioning end, ensuring precise positioning of the sheet 100.

[0174] Secondly, the fifth adjustment portion 212 is connected to the fourth clamping arm 211 and plays an important role in adjusting the distance. This design allows the user to adjust the distance between the fourth clamping arms 211 as needed to accommodate plates 100 of varying widths. This adjustment capability greatly enhances the versatility and adaptability of the device, reduces the frequency of replacement of positioning components due to changes in plate 100 size, and improves production efficiency.

[0175] Furthermore, the combined design of the fourth clamping arm 211 and the fifth adjustment portion 212 not only ensures ease of operation but also demonstrates the compactness and integration of the device structure. This design reduces the complexity of the device, enabling rapid adjustment and fixation of the sheet material 100 during operation, ensuring the continuity and efficiency of the scoring process. Thus, the coordinated operation of the fourth clamping arm 211 and the fifth adjustment portion 212 ensures precise positioning and stable clamping of sheets 100 of varying sizes.

[0176] Illustratively, the fifth adjustment portion 212 includes a pair of fourth linear motion modules, which are respectively connected to a pair of fourth clamping arms 211 , and can adjust the distance between the pair of fourth clamping arms 211 in the fourth direction by controlling the pair of fourth linear motion modules.

[0177] Exemplarily, the fourth linear motion module is a screw-type linear module, a linear motor-type linear module, a gear rack-type linear module, a cylinder-driven linear module, etc., which are not specifically limited here.

[0178] Of course, in order to prevent the fourth linear motion module from occupying the space of the third supporting end 241, a fourth long groove extending along the fourth direction can be opened on the third supporting end 241, and the lower end of the fourth clamping arm 211 is passed through the fourth long groove, and the fourth linear motion module is arranged below the third supporting end 241, and then the lower end of the fourth clamping arm 211 is connected to the fourth linear motion module.

[0179] like Figure 7 As shown, in some embodiments, the third supporting end 241 is distributed with a first negative pressure adsorption port 230 .

[0180] In this embodiment, a first negative pressure adsorption port 230 is provided on the third supporting end 241, and then when processing the product of this application, the plate 100 is sucked and placed on the third supporting end 241, and the above-mentioned first positioning member 330 and the second positioning member 350 are adjusted to limit the plate 100 and then the first negative pressure adsorption port 230 is activated to fix the plate 100 on the platform.

[0181] Of course, if the plate 100 is made of a magnetic material, a magnet may be provided at the third supporting end 241 to fix the plate 100 by magnetic attraction.

[0182] like Figure 9 and Figure 10 As shown, in some embodiments, the seaming device 500 includes a second positioning platform 520, a clamping member 510, a mold core 540, a pair of extrusion members 530, and a second driving member. The second positioning platform 520 has a fourth bearing end 521, and the fourth bearing end 521 has a placement area, which is used to carry the U-shaped semi-finished shell 400; the clamping member 510 is connected to the second positioning platform 520, and the clamping member 510 is used to clamp the U-shaped semi-finished shell 400 located in the placement area; the mold core 540 is placed on the U-shaped semi-finished shell The inner cavity of the shell 400; the outer shape of the mold core 540 matches the inner contour of the finished shell 900; a pair of extrusions 530 are located on opposite sides of the placement area; the second driving member is connected to the pair of extrusions 530, and the second driving member can drive the pair of extrusions 530 to move closer to or away from each other in the fifth direction, and the fifth direction is parallel to the fourth load-bearing end 521, so that the extrusion 530 can push the corresponding U-shaped semi-finished shell 400 to bend to abut against the end of the mold core 540 away from the fourth load-bearing end 521.

[0183] In this embodiment, the second positioning platform 520 serves as a basis for supporting the U-shaped semi-finished shell 400, and the placement area of the fourth supporting end 521 ensures stable positioning of the shell during processing, providing solid support for subsequent seaming operations.

[0184] The clamping member 510 is connected to the second positioning platform 520 and is responsible for firmly clamping the U-shaped semi-finished shell 400 to prevent the shell from shifting during the extrusion molding process, thereby ensuring the accuracy and stability of the processing.

[0185] The mold core 540 is placed in the inner cavity of the U-shaped semi-finished shell 400. Its outer shape design matches the inner contour of the finished shell 900, playing a precise molding guide role, ensuring that the inner size and shape of the shell meet the design requirements after the seams are closed.

[0186] A pair of extrusion members 530 are located on opposite sides of the placement area and, controlled by a second driver, move in concert in a fifth direction, parallel to the load-bearing end. This design enables the extrusion members 530 to apply balanced and controllable pressure to both ends of the U-shaped shell, achieving precise secondary bending, forcing the ends toward the mold core 540 and ultimately closing. The second driver, acting as the power source for the extrusion members 530, adjusts their relative positions through a precise control mechanism, allowing them to move toward or away from the center at synchronized and adjustable speeds and forces. This precisely controls the seaming process, ensuring the tightness of the weld 410 and the quality of the shell's molding.

[0187] For example, the length of the mold core 540 is set to be equal to the length of the finished shell 900, which is conducive to reducing the consumption of gas used in the subsequent air tightness test by placing the mold core 540 in the finished shell 900.

[0188] Exemplarily, the second driving member is an electric push rod; of course, in other embodiments, the second driving member may also be a hydraulic cylinder, a pneumatic cylinder, etc.

[0189] For example, the mold core 540 is formed of mold steel to ensure the hardness and service life required by production. Its surface is required to be smooth, free of burrs and scratches, and wear-resistant. The mold core 540 is designed with chamfers that match the product being produced.

[0190] Exemplarily, the extrusion 530 has a front end and a bottom end. The front end is the end of the extrusion 530 facing the U-shaped semi-finished housing 400, and the bottom end is the end facing the first support end 341. The bottom end is configured as a planar structure parallel to the first support end 341, while the front end is configured as a planar structure parallel to the second direction. Optionally, after the secondary bending, the bent portion of the end of the U-shaped semi-finished housing 400 is clamped between the bottom end and the mold core 540.

[0191] For example, a chamfer is provided at the junction of the front end and the bottom end to avoid scratching the U-shaped semi-finished shell 400. Optionally, the extrusion piece 530 is provided in a right-angled trapezoid.

[0192] During operation, the extruder 530 is started after the U-shaped semi-finished shell 400 and the mold core 540 are positioned, and the plate 100 is pushed toward the middle from both sides of the U-shaped semi-finished shell 400 along the chamfers and upper plane of the mold core 540 to complete the final bending and forming of the battery shell.

[0193] like Figure 10 As shown, in some embodiments, the clamping member 510 includes a pair of fifth clamping arms 511 and a second driving portion 512, and the pair of fifth clamping arms 511 are respectively located on both sides of the placement area; the second driving portion 512 is connected to the pair of fifth clamping arms 511, and the second driving portion can drive the pair of fifth clamping arms 511 to move closer to or away from each other.

[0194] For example, the fifth clamping arm 511 is configured to extend along the length direction of the finished shell 900 , and the length of the fifth clamping arm 511 is greater than the length of the finished shell 900 , thereby reducing the rebound of the U-shaped semi-finished shell 400 and affecting the bending effect.

[0195] For example, the second driving part 512 may be an electric push rod; of course, a pneumatic cylinder, a hydraulic cylinder, etc. may also be used.

[0196] In one embodiment of the second aspect, the welding device includes a welding head 600 and a third driving member, the welding head 600 is facing the weld 410; the third driving member is installed on the second positioning platform 520, and the third driving member is connected to the welding head 600, and the third driving member can drive the welding head 600 to move along the weld 410.

[0197] Obviously, after the U-shaped semi-finished shell 400 is bent using the seam closing device 500, the clamping member 510 is kept clamping the U-shaped semi-finished shell 400, and the extrusion member 530 presses down the bent part of the U-shaped semi-finished shell 400, and then the welding head 600 is driven by the third driving member to move along the weld 410 to weld the weld 410, and a finished shell 900 is formed after the welding is completed.

[0198] For example, the welding head 600 may adopt laser welding or argon arc welding, which is not specifically limited here.

[0199] Exemplarily, the third driving member is the fifth linear motion module, and the fifth linear motion module is a screw type linear module, a linear motor type linear module, a gear rack type linear module, a cylinder drive type linear module, etc., which is not specifically limited here.

[0200] like Figure 11 and Figure 12 As shown, in some embodiments, the mold core 540 has a heat dissipation cavity 542 , and the heat dissipation cavity 542 has an air inlet 541 and an air outlet 543 , and the air outlet 543 faces the weld 410 .

[0201] During the welding process, especially with high-energy-density welding methods like laser welding and electron beam welding, a significant amount of heat is generated. Cooling channels 542 within mold core 540 introduce cool air or a cooling medium through air inlet 541 and direct it toward the weld seam 410 through air outlet 543. This effectively removes heat from the weld area, preventing overheating from causing material deformation, quality issues with the weld seam 410, and potentially impacting the performance and life of the welding equipment.

[0202] Heat dissipation measures can control the temperature of the welding area, avoid changes in the metal microstructure caused by local overheating, and reduce the heat-affected zone around the weld 410, thereby improving the mechanical properties and durability of the weld joint and ensuring welding quality.

[0203] As a precision component, mold core 540 directly contacts high-temperature weld 410. Without effective heat dissipation measures, its material may degrade or even fail due to prolonged heat exposure. The design of heat dissipation channel 542 protects mold core 540, extending its service life and reducing maintenance costs.

[0204] like Figure 13 As shown, in some embodiments, the production line also includes an airtightness detection device, which includes a pair of plugs 700, and the two ends of the finished shell 900 respectively have openings, and the pair of plugs 700 are installed at the two ends of the finished shell 900 to close the finished shell 900; wherein, the mold core 540 is located in the finished shell 900, and one of the pair of plugs 700 has an inflation hole 710, the inflation hole 710 is connected to the air inlet 541, and the mold core 540 is provided with a clearance groove on the side facing the weld 410, the clearance groove is extended along the extension direction of the weld 410, and the clearance groove is connected to the air outlet 543.

[0205] After welding, a pair of plugs 700 are installed at the two end openings of the finished housing 900 to seal the housing and prepare for airtightness testing. This design ensures the sealing of the test environment and prevents external factors from interfering with the test results.

[0206] One of the plugs 700 is provided with a gas filling hole 710, which is connected to the gas inlet 541 inside the mold core 540. Through the gas filling hole 710, gas at a certain pressure can be injected into the shell to provide the necessary test medium for air tightness testing.

[0207] In addition, mold core 540 includes a relief groove extending along weld seam 410. This relief groove communicates with gas outlet 543 within the housing. When gas is injected into the housing and passes through the relief groove, this design not only prevents direct impact with weld seam 410, potentially causing inspection errors, but also ensures smooth gas discharge, facilitating stable pressure control and uniform gas distribution during inspection. Furthermore, weld seam 410 is located within the notch of relief groove 544.

[0208] It can be easily understood that after gas is injected into the housing through the filling hole 710, the pressure changes inside the housing are monitored. If the housing is well sealed, the internal pressure will remain stable. Otherwise, it indicates a leak. In this way, the airtightness of the finished housing 900 can be quickly and accurately evaluated, ensuring that each housing meets the predetermined quality standards.

[0209] Exemplarily, the plug 700 is provided with a plate-like structure and is installed at the opening of the finished shell 900 in conjunction with a sealing gasket to achieve sealing.

[0210] Optionally, the plug 700 and the core mold 540 are connected by bolts, so that the plug 700 can be fixed to the finished shell 900 without contacting the external structure.

[0211] Of course, in other embodiments, the plug 700 can also be provided on the power member. When the finished housing to be inspected is placed in the inspection position, the power member drives the plug to the opening of the finished housing 900, thereby clamping and closing the opening of the finished housing 900. This is equivalent to replacing the plug connected to the mold core 540 by bolts.

[0212] like Figure 14 and Figure 15 As shown, in some embodiments, the production line also includes a cleaning device 800, which includes a support member 810, a cleaning flywheel 830, a suction member 820 and a fourth driving member. The cleaning flywheel 830 is rotatably connected to the support member 810, the fourth driving member is connected to the cleaning flywheel 830, and the fourth driving member can drive the cleaning flywheel 830 to rotate, and the suction member 820 is connected to the support member 810, and the suction member 820 can suck dust from the cleaning flywheel 830; wherein, the support member 810 has an insertion end 811, the insertion end 811 can be inserted into the inner cavity of the finished product shell 900, and the flywheel 830 is located at the insertion end 811.

[0213] The cleaning device 800 integrated into the production line further improves the post-processing stage of the production process and ensures the cleanliness of the inner cavity of the finished shell 900. Its design and working principle are as follows:

[0214] 1. The support member 810 is designed with an insertion end 811, which is shaped and sized to be inserted into the inner cavity of the finished housing 900 to reach the area that needs to be cleaned. This design ensures the targeted and effective cleaning process and avoids unnecessary damage to the housing.

[0215] 2. Cleaning flywheel 830 is mounted on support member 810 via a rotatable connection and is driven to rotate by a fourth drive member. Flywheel 830 may be equipped with a brush, scraper, or other cleaning element. As flywheel 830 rotates at high speed, it effectively removes residues such as welding slag and dust from the surface of the inner cavity of the housing, ensuring the cleanliness of the inner cavity.

[0216] 3. Suction member 820 is connected to support member 810 and activates its suction function during operation, promptly removing dust and debris generated by flywheel 830 during operation, preventing these impurities from being redistributed into the housing or the work environment. This instant suction design helps maintain a clean work environment while improving cleaning efficiency and quality.

[0217] 4. The fourth drive member serves as the power source for cleaning the flywheel 830. The fourth drive member ensures that the flywheel 830 can rotate stably and efficiently. Its speed and torque can be adjusted according to the cleaning requirements to adapt to the cleaning of the inner cavity of the shell with different materials and pollution levels.

[0218] Illustratively, the support member 810 includes a base and a cantilever, one end of the cantilever is fixed to the base, and the other end constitutes an insertion end 811 .

[0219] Exemplarily, the fourth driving member is a driving motor.

[0220] Exemplarily, the suction member includes a suction head, which is mounted on the insertion end, and an opening of the suction head faces the flywheel.

[0221] In some embodiments, the production line also includes a robotic arm and a negative pressure suction cup, the end of the robotic arm is connected to the negative pressure suction cup, and the robotic arm can drive the negative pressure suction cup to move within a preset range; wherein, the marking device 200, the bending device 300, the seaming device 500 and the welding device are all located within the preset range.

[0222] The robotic arm's negative pressure suction cups use negative pressure (vacuum) to absorb and transport sheet metal 100 or semi-finished housing 900, eliminating the need for manual intervention. This reduces labor intensity and improves production efficiency and safety. This method is particularly suitable for handling large metal sheets 100 of varying sizes and weights, ensuring stability and accuracy during the handling process.

[0223] The range of motion of the robotic arm is set to cover the marking device 200, the bending device 300, the seaming device 500 and the welding device, which means that it can automatically transfer the plate 100 to be processed from one workstation to the next, with fully automated operation, reducing the conversion time between processes and improving the continuity and smoothness of the production line; and the precise control capability of the robotic arm ensures the precise placement of the plate 100 in each processing link, especially in the marking and welding steps that require a high degree of positioning accuracy. The robotic arm can accurately position the plate 100 or semi-finished product in the correct position of the processing device according to the preset program, reducing human errors and improving the consistency and quality of the finished product.

[0224] Obviously, through programming, the robotic arm can adapt to the processing of plates 100 of different sizes and shapes, as well as the needs of different production processes, thereby improving the flexibility and adaptability of the production line and enabling rapid adjustments to meet the needs of customization or mass production.

[0225] In all examples shown and described herein, any specific values should be interpreted as merely exemplary and not limiting, and thus other examples of the exemplary embodiments may have different values.

[0226] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0227] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art can make several simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A production line, characterized in that the production line include: A scoring device is used to score the plate to be bent so as to form a bending line on the surface of the plate to be bent; A bending device is used to bend the end of the plate after scoring once, so that the plate forms a U-shaped semi-finished shell; A seam closing device is used to perform a secondary bend on the ends of the U-shaped semi-finished shell so that the ends of the U-shaped semi-finished shell can be closed and a weld seam can be formed; Welding device, the welding device is used for welding the weld seam to obtain the finished shell; The bending device includes a punch, a die, a first driving member and a first positioning member, the punch has a core; the die has a cavity and a first bearing end, the cavity opening is located at the first bearing end, and the first bearing end is used to bear the plate to be bent; the first driving member is connected to the punch, and the first driving member can drive the punch to move, and the moving path of the punch is configured to enable the core to enter and exit the cavity from the cavity opening; the first positioning member has a pair of first positioning ends, the pair of first positioning ends are respectively located on both sides of the cavity opening, and the pair of first positioning ends are used to respectively abut against the two ends of the plate to be bent located at the first bearing end in the first direction; wherein the distance between the pair of first positioning ends in the first direction can be adjusted, and the first direction is parallel to the first bearing end; The male mold includes two sub-molds and a third adjustment portion, wherein the gap between the pair of sub-molds forms a mold cavity; the third adjustment portion is connected to the pair of sub-molds, and the third adjustment portion is capable of adjusting the distance between the pair of sub-molds in a first direction; wherein the first driving member and the male mold are detachably connected; The die further includes a lifting portion, a first driving portion, and a gripping portion. The lifting portion is located in the cavity. The first driving portion is connected to the lifting portion and is capable of driving the lifting portion to move from an end of the cavity away from the cavity opening to the cavity opening. The gripping part is connected to the lifting part, and the gripping part can grip the part of the bent plate close to the lifting part; the gripping part can absorb the part of the bent plate close to the lifting part; The joint device includes a second positioning platform, a clamping member, a mold core, a pair of extrusion members, and a second driving member. The second positioning platform has a fourth load-bearing end, and the fourth load-bearing end has a placement area for carrying the U-shaped semi-finished shell. The clamping member is connected to the second positioning platform and is used to clamp the U-shaped semi-finished shell located in the placement area. The mold core is placed in the inner cavity of the U-shaped semi-finished shell. The outer shape of the mold core matches the inner contour of the finished shell. The pair of extrusion members are located on opposite sides of the placement area. The second driving member is connected to a pair of extrusion members, and the second driving member can drive the pair of extrusion members to move closer to or away from each other in the fifth direction. The fifth direction is parallel to the fourth bearing end, so that the extrusion member can push the end of the corresponding U-shaped semi-finished shell to bend to abut against the end of the mold core away from the fourth bearing end.

2. The production line according to claim 1, characterized in that The bending device also includes: A second positioning member, the second positioning member has a pair of second positioning ends, and the pair of second positioning ends are respectively located on both sides of the cavity; wherein, the pair of second positioning ends are used to respectively abut against the two ends of the sheet to be bent located at the first bearing end in the second direction, and the distance between the pair of second positioning ends in the second direction can be adjusted, the second direction is parallel to the first bearing end, and the second direction and the first direction are perpendicular to each other.

3. The production line according to claim 2, characterized in that: The first positioning member includes: a pair of first clamping arms, wherein the pair of first clamping arms are sequentially arranged along the first direction, and the pair of first clamping arms are respectively located on both sides of the cavity opening; a first adjusting portion connected to the pair of first clamping arms, the first adjusting portion being capable of adjusting the distance between the pair of first clamping arms in the first direction; wherein the first clamping arms constitute the first positioning end; And / or, the second positioning member includes: a pair of second clamping arms, wherein the pair of second clamping arms are sequentially arranged along the second direction, and the pair of second clamping arms are respectively located on both sides of the cavity opening; The second adjusting portion is connected to a pair of second clamping arms, and the second adjusting portion can adjust the distance between the pair of second clamping arms in the second direction; wherein the second clamping arms constitute the second positioning end.

4. The production line according to claim 1, characterized in that: The lifting portion has a second bearing end, which can abut against the plate, and the second bearing end is arranged as a planar structure; wherein the working surface of the core and the second bearing end are arranged in parallel.

5. The production line according to claim 1, characterized in that: The core is arranged in an eight-shaped manner on both sides of the first direction, so that the core has a large end and a small end that are relatively arranged, and the large end is close to the cavity opening.

6. The production line according to claim 1, characterized in that: The scoring device comprises: A first positioning platform, wherein the first positioning platform has a third bearing end, and the third bearing end is used to bear the plate to be bent; a third positioning member, the third positioning member having a pair of third positioning ends; the pair of third positioning ends being used to abut against two ends of the sheet material to be bent located at the third supporting end in a third direction, respectively, the third direction being parallel to the third supporting end; wherein the distance between the pair of third positioning ends in the third direction is adjustable; A fourth positioning member, the fourth positioning member has a pair of fourth positioning ends; the pair of fourth positioning ends are used to respectively abut against the two ends of the plate to be bent located at the third bearing end in a fourth direction, the fourth direction is parallel to the third bearing end, and the fourth direction and the third direction are perpendicular to each other; wherein the distance between the pair of fourth positioning ends in the fourth direction can be adjusted.

7. The production line according to claim 6, characterized in that The third positioning member includes: a pair of third clamping arms, wherein the pair of third clamping arms are sequentially arranged along the third direction; a fourth adjusting portion, the fourth adjusting portion being connected to the pair of third clamping arms, the fourth adjusting portion being capable of adjusting the distance between the pair of third clamping arms in the third direction; wherein the third clamping arms constitute the third positioning end; And / or, the fourth positioning member includes: a pair of fourth clamping arms, the pair of fourth clamping arms being sequentially arranged along the fourth direction; A fifth adjusting portion is connected to a pair of the fourth clamping arms, and the fifth adjusting portion can adjust the distance between the pair of the fourth clamping arms in the fourth direction; wherein the fourth clamping arms constitute the fourth positioning end.

8. The production line according to claim 6, characterized in that: The third bearing end is provided with a first negative pressure adsorption port.

9. The production line according to claim 6, characterized in that: The clamping member comprises: a pair of fifth clamping arms, wherein the pair of fifth clamping arms are respectively located on both sides of the placement area; The second driving part is connected to the pair of the fifth clamping arms, and the second driving part can drive the pair of the fifth clamping arms to move closer to or farther from each other.

10. The production line according to claim 6, characterized in that: The welding device comprises: a welding head, the welding head facing the weld; A third driving member is installed on the second positioning platform and is connected to the welding head. The third driving member can drive the welding head to move along the welding seam.

11. The production line according to claim 6, characterized in that: The mold core has a heat dissipation cavity, the heat dissipation cavity has an air inlet and an air outlet, and the air outlet faces the weld.

12. The production line according to claim 11, characterized in that The production line also includes: An airtightness detection device, comprising a pair of plugs, each of the ends of the finished product housing having an opening, the pair of plugs being installed at both ends of the finished product housing to seal the finished product housing; In which, the mold core is located in the finished shell, and one of the pair of plugs has an inflation hole, the inflation hole is connected to the air inlet, and a clearance groove is opened on the side of the mold core facing the weld, the clearance groove extends along the extension direction of the weld, and the clearance groove is connected to the air outlet.

13. The production line according to claim 8, characterized in that The production line also includes: A cleaning device, comprising a support member, a cleaning flywheel, a suction member, and a fourth driving member, wherein the cleaning flywheel is rotatably connected to the support member, the fourth driving member is connected to the cleaning flywheel, and the fourth driving member is capable of driving the cleaning flywheel to rotate, and the suction member is connected to the support member, and the suction member is capable of sucking dust from the cleaning flywheel; Wherein, the support member has an insertion end, the insertion end can be inserted into the inner cavity of the finished shell, and the flywheel is located at the insertion end.

14. The production line according to claim 13, characterized in that The production line also includes: A robotic arm and a negative pressure suction cup, wherein the end of the robotic arm is connected to the negative pressure suction cup, and the robotic arm can drive the negative pressure suction cup to move within a preset range; wherein the marking device, the bending device, the seaming device and the welding device are all located within the preset range.

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