Stamping device and production system

Abstract

A stamping device (100), comprising a first component (10) and a second component (20). An abutting structure (11) is provided on the first component, and is used for abutting against a workpiece (80); the second component is arranged opposite to the first component in a first direction, and the second component can move close to or away from the first component in the first direction; and a stamping head (21) is arranged on the side of the second component facing the first component, and is used for stamping a groove on the workpiece. Also provided is a production system. The stamping device abuts against the workpiece by means of the abutting structure, reducing the risk that the workpiece is damaged in the stamping process, and the abutting structure can stabilize the workpiece to a certain extent, so that the stamping head can accurately stamp the groove on the workpiece, improving the machining quality of the workpiece.

Description

Stamping equipment and production systems Technical Field

[0001] The present application relates to the field of batteries, and more specifically, to a stamping device and a production system. Background Art

[0002] In recent years, new energy vehicles have experienced rapid development. In the electric vehicle sector, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. With the vigorous promotion of new energy vehicles, the demand for power battery products is also growing. As a core component of new energy vehicles, batteries have high requirements in terms of reliability and service life.

[0003] In battery technology, to ensure the safety of battery cells, scored grooves are typically stamped into the outer shell of the battery cell to form a pressure relief structure for relieving internal pressure in the battery cell. When the internal pressure or temperature of the battery cell reaches a threshold, the pressure relief structure activates to relieve the pressure within the battery cell. However, the precision of the scored grooves stamped into the outer shell of existing battery cells is low, resulting in poor consistency of the scored grooves across the battery cells, which is detrimental to improving production quality.

[0004] Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a stamping device and a production system that can effectively improve the manufacturing quality of workpieces.

[0006] In the first aspect, an embodiment of the present application provides a stamping device, which includes a first component and a second component, the first component is provided with an abutment structure, and the abutment structure is used to abut a workpiece; the second component is arranged opposite to the first component along a first direction, and the second component and the first component can approach or move away from each other in the first direction, and a stamping head is provided on the side of the second component facing the first component, and the stamping head is used to stamp a groove on the workpiece.

[0007] In the above technical solution, the first component of the stamping device is provided with an abutment structure, which can abut against the workpiece and stabilize the workpiece to a certain extent. The second component and the first component can move closer to or farther away from each other in a first direction to drive the punch head to approach the abutment structure, so that the punch head punches a groove on the workpiece abutted by the abutment structure. The stamping device abuts the workpiece through the abutment structure, which is conducive to reducing the risk of damage to the workpiece during the stamping process. The abutment structure can stabilize the workpiece to a certain extent, so that the punch head can accurately punch a groove on the workpiece, which is conducive to improving the processing quality of the workpiece.

[0008] As an optional technical solution of an embodiment of the present application, the workpiece is a shell having a accommodating cavity and a first wall; the abutment structure includes a protrusion arranged on the side of the first component facing the second component, and the protrusion is used to be inserted into the accommodating cavity to abut the first wall, and the punching head is used to punch a groove on the first wall.

[0009] In the above technical solution, the shell has a accommodating cavity and a first wall, and the abutting structure includes a protrusion, which is inserted into the accommodating cavity and abuts against the first wall, and the punch head punches out a groove on the first wall. The protrusion and the punch head are respectively located on both sides of the first wall, the protrusion abuts against the first wall on one side of the first wall, and the punch head punches out a groove on the other side of the first wall. The protrusion and the punch head both act on the first wall, which helps to reduce the risk of damage to the first wall during the stamping process. The abutting structure can stabilize the first wall to a certain extent, so that the punch head can accurately punch out a groove on the first wall, which helps to improve the processing quality of the workpiece. In addition, since the protrusion is inserted into the accommodating cavity to abut against the first wall, during processing, it is only necessary to put the workpiece on the protrusion, which is simple and convenient to operate.

[0010] As an optional technical solution of an embodiment of the present application, the shell includes a side wall and the first wall, the side wall is arranged around the first wall, one end of the side wall is connected to the first wall, and the other end of the side wall is enclosed to form an opening, and the side wall and the first wall jointly define the accommodating cavity; the protrusion is used to be inserted into the accommodating cavity from the opening to position the shell.

[0011] In the above technical solution, the sidewalls surround the first wall, and together they define a receiving cavity with an open end. When the projection is inserted into the receiving cavity and abuts the first wall, the sidewalls surround the outside of the projection, limiting relative movement between the projection and the first wall, thereby positioning the housing relative to the projection. Thus, the relative position of the first wall and the projection is limited, making relative movement between the first wall and the projection unlikely during the stamping process. This allows for accurate stamping of the groove in the first wall, which improves the workpiece processing quality.

[0012] As an optional technical solution of an embodiment of the present application, the protrusion includes a contact surface and multiple side surfaces, and the multiple side surfaces are arranged around the contact surface. Along the first direction, the contact surface is arranged opposite to the punching head, and the contact surface is used to contact the first wall. The contact surface and at least one of the side surfaces are transitioned through a rounded corner.

[0013] In the above technical solution, generally speaking, the inner surface of the first wall of the shell and the inner surface of the side wall are connected by a circular arc surface. By making the abutting surface and at least one side surface transition through a rounded corner, on the one hand, the rounded corner transition can reduce the sharpness of the connection position between the abutting surface and at least one side surface, so that the shell is not easily damaged when the protrusion is inserted into the accommodating cavity, which is beneficial to improving the processing quality of the shell. On the other hand, when the inner surface of the first wall of the shell and the inner surface of the side wall are connected by a circular arc surface, the abutting surface of the protrusion and at least one side surface transition through a rounded corner can make at least one side surface fit with the protrusion, which is beneficial to reducing the risk of relative movement between the first wall and the protrusion, and is beneficial to improving the processing quality of the workpiece.

[0014] As an optional technical solution of an embodiment of the present application, the multiple side surfaces include a first side surface and a second side surface, the first side surface and the second side surface are arranged relatively to each other along a second direction, and the second direction intersects with the first direction; the abutting surface and the first side surface are transitioned through a rounded corner, and the abutting surface and the second side surface are transitioned through a rounded corner.

[0015] In the above technical solution, generally speaking, the inner surface of the first wall of the shell and the inner surface of the side wall are connected by a circular arc surface. By making the abutting surface and the first side surface, and the abutting surface and the second side surface all transition through rounded corners, on the one hand, the rounded corner transition can reduce the sharpness of the connection position between the abutting surface and the first side surface, and the connection position between the abutting surface and the second side surface, so that the shell is not easily damaged when the protrusion is inserted into the accommodating cavity, which is beneficial to improving the processing quality of the shell. On the other hand, when the inner surface of the first wall of the shell and the inner surface of the side wall are connected by a circular arc surface, the abutting surface of the protrusion and the first side surface, and the abutting surface and the second side surface all transition through rounded corners, which can make the first side surface and the protrusion, and the second side surface and the protrusion fit together, further reducing the risk of relative movement of the first wall and the protrusion along the second direction, which is beneficial to improving the processing quality of the workpiece.

[0016] As an optional technical solution of the embodiment of the present application, the abutting surface and each of the side surfaces are transitioned through rounded corners.

[0017] In the above technical solution, by making the abutment surface and each side surface transition through a rounded corner, on the one hand, the rounded corner transition can reduce the sharpness of the connection point between the abutment surface and each side surface, making it less likely for the protrusion to damage the shell when inserted into the accommodating cavity, which is beneficial to improving the processing quality of the shell. On the other hand, when the inner surface of the first wall of the shell and the inner surface of the side wall are connected by an arc surface, the abutment surface of the protrusion and each side surface have a rounded corner transition, which can make each side surface fit the protrusion, further reducing the risk of relative movement between the first wall and the protrusion, which is beneficial to improving the processing quality of the workpiece.

[0018] As an optional technical solution of an embodiment of the present application, the stamping head includes a connecting portion and a cutter head, the connecting portion connects the second component and the cutter head, along the first direction, the cutter head is protruded on the surface of the connecting portion away from the second component, and the cutter head is used to stamp a groove on the workpiece.

[0019] In the above technical solution, the connecting portion serves as a connection, facilitating the connection of the cutting head to the second component. The cutting head is used to contact the workpiece to punch a groove therein. The cutting head is projecting from the surface of the connecting portion facing away from the second component. The rigidity of the connecting portion can be greater than that of the cutting head, making the punching head less susceptible to breakage during the punching process, thereby improving the stability and lifespan of the punching equipment.

[0020] As an optional technical solution of an embodiment of the present application, the shape of a cross section of the connecting portion perpendicular to the first direction is the same as the shape of a cross section of the tool head perpendicular to the first direction.

[0021] In the above technical solution, by making the shape of the cross section of the connecting portion perpendicular to the first direction the same as the shape of the cross section of the tool head perpendicular to the first direction, it is beneficial to reduce the manufacturing cost of the connecting portion.

[0022] As an optional technical solution of the embodiment of the present application, the connecting portion is a solid columnar structure.

[0023] In the above technical solution, the connecting part is set to a solid columnar structure, so that the connecting part has higher rigidity, making the punching head less likely to break during the punching process, which is beneficial to improving the stability and life of the punching equipment.

[0024] As an optional technical solution of an embodiment of the present application, the cutter head includes a first cutter body and a second cutter body, the first cutter body is protruded from the surface of the connecting portion facing away from the second component, the second cutter body is protruded from the surface of the first cutter body facing away from the connecting portion, and the shape of the cross section of the second cutter body perpendicular to the first direction is the same as the shape of the cross section of the first cutter body perpendicular to the first direction.

[0025] In the above technical solution, the first blade body is protruding from the surface of the connecting portion facing away from the second component, and the second blade body is protruding from the surface of the first blade body facing away from the connecting portion. The cross-sectional shape of the second blade body perpendicular to the first direction is the same as the cross-sectional shape of the first blade body perpendicular to the first direction. In this way, the blade head forms a stepped structure. The second blade body primarily contacts the workpiece and punches the groove in the workpiece. The first blade body has a larger cross-sectional area than the second blade body. The second blade body is considered the head of the blade head and the first blade body is considered the root of the blade head. This arrangement can increase the strength of the root of the blade head and reduce the risk of the blade head breaking during the stamping process.

[0026] As an optional technical solution of an embodiment of the present application, the first blade body includes at least one first blade strip, and the second blade body includes at least one second blade strip, each of the second blade strips is correspondingly arranged on a surface of the first blade strip facing away from the connecting portion, and the width dimension of the second blade strip is smaller than the width dimension of the corresponding first blade strip.

[0027] In the above technical solution, the first blade body includes at least one first blade strip, and the second blade body includes at least one second blade strip. The first blade strips and the second blade strips are arranged in a one-to-one correspondence, and the first blade strip is protruded from the surface of the second blade body facing away from the connecting portion. The width of the first blade strip is greater than the width of the corresponding second blade strip to increase the strength of the blade base and reduce the risk of the blade breaking during the stamping process.

[0028] As an optional technical solution of the embodiment of the present application, the cutter head and the connecting portion are integrally formed.

[0029] In the above technical solution, by integrally forming the cutter head and the connecting part, it is beneficial to increase the integrity of the cutter head and the connecting part, increase the connection strength of the cutter head and the connecting part, reduce the risk of separation of the cutter head and the connecting part during the stamping process, and help improve the overall strength of the stamping head, reduce the risk of the stamping head breaking during the stamping process, and help improve the stability and life of the stamping equipment.

[0030] As an optional technical solution of an embodiment of the present application, the cutter head and the connecting part are separately arranged and connected.

[0031] In the above technical solution, by separately arranging and connecting the cutter head and the connecting portion, the cutter head and the connecting portion can be processed separately during machining, which is conducive to improving the accuracy of the cutter head and thus improving the accuracy of the machined groove. In addition, when the cutter head is damaged, it can be repaired by replacing the cutter head, which is conducive to reducing maintenance costs.

[0032] As an optional technical solution of an embodiment of the present application, the connecting portion is provided with a positioning groove, and the cutter head is plugged into and fitted into the positioning groove.

[0033] In the above technical solution, the cutter head and the connecting portion are plug-fitted together, which enables quick assembly and disassembly of the cutter head and the connecting portion.

[0034] As an optional technical solution of an embodiment of the present application, the abutment structure has an abutment surface for abutting the workpiece; the stamping equipment also includes a limiter, which is arranged between the first component and the second component along the first direction, and the limiter is used to limit the minimum distance between the stamping head and the abutment surface.

[0035] In the above technical solution, a limiter is provided between the first component and the second component so that the limiter can limit the minimum distance between the punching head and the abutment surface when the punching head approaches the abutment surface along the first direction and punches a groove on the workpiece, thereby controlling the residual thickness of the groove after the punching head punches the groove on the workpiece, thereby controlling the residual thickness of the groove after the workpiece is stamped, and further improving the consistency of the thickness of the bottom wall of the groove processed on the workpiece, thereby improving the processing quality of the workpiece.

[0036] As an optional technical solution of an embodiment of the present application, the limiting member includes a first limiting portion and a second limiting portion, one end of the first limiting portion is connected to the first component, one end of the second limiting portion is connected to the second component, the other end of the first limiting portion is arranged opposite to the other end of the second limiting portion, and the other end of the first limiting portion and the other end of the second limiting portion are configured to abut each other when the second component approaches the abutting surface along the first direction, so as to limit the minimum distance between the punching head and the abutting surface.

[0037] In the above technical solution, the limiting member is provided with a first limiting portion and a second limiting portion which are arranged relatively along the first direction, and the first limiting portion and the second limiting portion are respectively connected to the first component and the second component, so that when the second component approaches the abutting surface along the first direction, the first limiting portion and the second limiting portion can abut against each other to limit the minimum distance between the punching head and the abutting surface in the first direction. The stamping equipment adopting this structure can realize that the limiting collision between the second component and the first component occurs between the first limiting portion and the second limiting portion of the limiting member, thereby effectively alleviating the phenomenon of direct collision between the limiting member and the first component or the second component, so as to reduce the phenomenon of damage to the second component or the first component, and thus is conducive to improving the service life and reliability of the stamping equipment.

[0038] As an optional technical solution of the embodiment of the present application, the difference between the minimum stiffness of the first limiting portion and the minimum stiffness of the second limiting portion is less than or equal to 2×10 10 N / m.

[0039] In the above technical solution, by making the difference between the minimum stiffness of the first limiting portion and the minimum stiffness of the second limiting portion less than or equal to 2×10 10 N / m, so that the minimum stiffness of the first limit part and the second limit part are closer. In this way, when the first limit part and the second limit part abut against each other, the one with greater stiffness between the first limit part and the second limit part is not likely to cause a large deformation of the one with smaller stiffness between the first limit part and the second limit part, which is beneficial to improving the effect of limiting the minimum distance between the punching head and the abutting surface, making the residual thickness of the punched groove more accurate, and helping to improve the processing quality of the workpiece.

[0040] As an optional technical solution of the embodiment of the present application, the minimum stiffness of the first limiting portion is K1, which satisfies: K1≥6.25×10 10 N / m; and / or the minimum stiffness of the second limiting portion is K2, satisfying: K2 ≥ 6.25 × 10 10 N / m.

[0041] In the above technical solution, by making the minimum stiffness of the first limiting portion and / or the second limiting portion greater than or equal to 6.25×10 10 N / m, so that the first limiting portion and / or the second limiting portion has sufficient rigidity, reducing the risk of bending deformation when the first limiting portion and the second limiting portion abut against each other, which is beneficial to improving the minimum distance limiting effect between the punching head and the abutting surface, making the residual thickness of the punched groove more accurate, and helping to improve the processing quality of the workpiece.

[0042] As an optional technical solution of an embodiment of the present application, along the first direction, the difference between the length of the first limiting portion and the length of the second limiting portion is less than or equal to 10 cm.

[0043] In the above technical solution, by setting the difference in length between the first limit part and the second limit part in the first direction to be less than or equal to 10 cm, the lengths of the first limit part and the second limit part in the first direction are close. Therefore, on the one hand, the contact collision point between the first limit part and the second limit part can be far away from the base and the second component to reduce the phenomenon of damage to the second component or the abutment platform. On the other hand, the stiffness and structural strength of the first limit part and the second limit part can be close, so that the first limit part and the second limit part abut against each other to limit the minimum distance between the punching head and the abutment surface in the first direction.

[0044] As an optional technical solution of an embodiment of the present application, along the first direction, the length of the first limiting portion is equal to the length of the second limiting portion.

[0045] In the above technical solution, by setting the lengths of the first limiting portion and the second limiting portion in the first direction to be equal, the stiffness and structural strength of the first limiting portion and the second limiting portion are further made close, so that the first limiting portion and the second limiting portion abut against each other to limit the minimum distance between the punching head and the abutting surface in the first direction.

[0046] As an optional technical solution of an embodiment of the present application, the area of ​​the minimum cross section of the first limiting portion perpendicular to the first direction is equal to the area of ​​the minimum cross section of the second limiting portion perpendicular to the first direction.

[0047] In the above technical solution, by setting the areas of the minimum cross sections of the first limiting portion and the second limiting portion perpendicular to the first direction to be equal, the stiffness and structural strength of the first limiting portion and the second limiting portion are made close, thereby facilitating the mutual abutment of the first limiting portion and the second limiting portion to limit the minimum distance between the punch head and the abutment surface in the first direction.

[0048] As an optional technical solution of an embodiment of the present application, the stamping equipment also includes a first position adjustment structure. Along the first direction, the first position adjustment structure is arranged between the stamping head and the second component, and the first position adjustment structure is used to adjust the distance between the stamping head and the second component.

[0049] In the above technical solution, the distance between the punch head and the second component is adjusted by providing a first position adjustment structure, thereby adjusting the residual thickness of the groove. When the first position adjustment structure increases the distance between the punch head and the second component, the residual thickness of the groove decreases. When the first position adjustment structure decreases the distance between the punch head and the second component, the residual thickness of the groove increases.

[0050] As an optional technical solution of an embodiment of the present application, the first position adjustment structure includes a first adjustment gasket.

[0051] In the above technical solution, the first position adjustment structure includes a first adjustment gasket. The distance between the punching head and the second component can be adjusted by replacing the first adjustment gaskets of different thicknesses, or by overlapping multiple first adjustment gaskets to adjust the distance between the punching head and the second component. This is simple, convenient and low-cost.

[0052] As an optional technical solution of an embodiment of the present application, the stamping equipment also includes a clamping mechanism, which is connected to the second component and is used to press the workpiece onto the abutment structure when the second component approaches the first component along the first direction.

[0053] In the above technical solution, the clamping mechanism can press the workpiece against the abutment structure when the second component approaches the first component along the first direction. On the one hand, it can improve the stability of the workpiece during the stamping process to reduce the shaking or slipping of the workpiece during the stamping process, which is beneficial to improving the stamping accuracy of the stamping equipment. On the other hand, it can alleviate the phenomenon of warping or bending of the workpiece when it is subjected to the stamping pressure of the stamping head, which is beneficial to improving the stamping quality of the stamping equipment.

[0054] As an optional technical solution of an embodiment of the present application, the clamping mechanism includes a clamping seat and an elastic member, the clamping seat is located on the side of the second component facing the first component along the first direction, and the clamping seat is used to press the workpiece onto the abutment structure when the second component approaches the first component along the first direction; the elastic member is arranged between the clamping seat and the second component, and the elastic member is used to be compressed when the workpiece is pressed onto the abutment structure.

[0055] In the above technical solution, the pressing mechanism is provided with a pressing seat and an elastic member, the pressing seat is used to abut against the workpiece placed on the abutting structure to press the workpiece against the abutting structure, and the pressing seat is a structure connected to the second member through the elastic member, so that when the second member drives the pressing seat to press the workpiece against the abutting structure, the elastic member can be compressed and provide elastic force to the pressing seat, so that the pressing seat presses the workpiece against the abutting structure. The pressing mechanism adopting this structure can, on the one hand, play a certain buffering role through the elastic member to alleviate the phenomenon of rigid contact or rigid collision between the pressing seat and the workpiece, which is beneficial to reducing the risk of the pressing seat damaging the workpiece; on the other hand, the elastic member can provide elastic force to the pressing seat, so that the pressing seat can press the workpiece against the abutting surface more firmly, which is beneficial to improving the stability and reliability of the pressing seat in pressing the workpiece.

[0056] As an optional technical solution of an embodiment of the present application, the punching head forms a punching end for punching a groove on the workpiece at one end away from the second component in the first direction; wherein, when the clamping seat is not in contact with the workpiece, along the first direction, the side of the clamping seat used to abut against the workpiece is closer to the abutment structure than the punching end.

[0057] In the above technical solution, when the pressing seat is not in contact with the workpiece, the pressing seat is closer to the abutment structure than the punch head along the first direction. Therefore, during the stamping process, the pressing seat first contacts the workpiece and presses the workpiece against the abutment structure before the punching end of the punch head contacts the workpiece and punches the groove into the workpiece. This helps reduce the risk of the workpiece warping or bending when subjected to the punching force of the punch head, thereby improving the stamping quality of the stamping equipment.

[0058] As an optional technical solution of the embodiment of the present application, the pressing seat is provided with a through hole for the punching head to pass through.

[0059] In the above technical solution, the pressing seat is provided with a through hole for the punching head to pass through, so that the punching head can punch the workpiece pressed by the pressing seat after passing through the through hole. The stamping equipment with this structure facilitates the punching head to punch the workpiece, and enables the pressing seat to press the area of ​​the workpiece surrounding the punching head, which is conducive to further improving the effect of the pressing seat in pressing the workpiece.

[0060] As an optional technical solution of an embodiment of the present application, the stamping equipment includes an adjusting member, which is arranged between the second component and the pressing seat along the first direction, and is used to adjust the minimum distance between the pressing seat and the second component.

[0061] In the above technical solution, an adjustment member is provided to adjust the minimum distance between the pressing seat and the second component, thereby controlling the residual thickness of the groove punched by the punch head in the workpiece. When the adjustment member reduces the minimum distance between the pressing seat and the second component, the punch head can extend further from the pressing seat, thereby reducing the residual thickness of the groove. When the adjustment member increases the minimum distance between the pressing seat and the second component, the punch head can extend further from the pressing seat, thereby increasing the residual thickness of the groove.

[0062] As an optional technical solution of an embodiment of the present application, the stamping equipment also includes a second position adjustment structure, which is arranged between the abutment structure and the first component, and the second position adjustment structure is used to adjust the minimum distance between the abutment structure and the first component.

[0063] In the above technical solution, the distance between the abutting structure and the first component is adjusted by providing a second position adjustment structure, thereby adjusting the residual thickness of the groove. When the second position adjustment structure increases the distance between the abutting structure and the first component, the residual thickness of the groove decreases. When the second position adjustment structure decreases the distance between the abutting structure and the first component, the residual thickness of the groove increases.

[0064] As an optional technical solution of the embodiment of the present application, the second position adjustment structure includes a second adjustment gasket.

[0065] In the above technical solution, the second position adjustment structure includes a second adjustment gasket, and the distance between the abutment structure and the first component can be adjusted by replacing the second adjustment gaskets of different thicknesses, or multiple second adjustment gaskets can be overlapped to adjust the distance between the abutment structure and the first component, which is simple, convenient and low-cost.

[0066] In a second aspect, an embodiment of the present application further provides a production system, which includes a workpiece and the above-mentioned stamping equipment, and the abutment structure abuts against the workpiece.

[0067] As an optional technical solution of an embodiment of the present application, the workpiece is a shell having a accommodating cavity and a first wall; the abutment structure includes a protrusion arranged on the side of the first component facing the second component, and the protrusion is used to be inserted into the accommodating cavity to abut the first wall, and the punching head is used to punch a groove on the first wall.

[0068] In the above technical solution, the shell has a accommodating cavity and a first wall, and the abutting structure includes a protrusion, which is inserted into the accommodating cavity and abuts against the first wall, and the punch head punches out a groove on the first wall. The protrusion and the punch head are respectively located on both sides of the first wall, the protrusion abuts against the first wall on one side of the first wall, and the punch head punches out a groove on the other side of the first wall. The protrusion and the punch head both act on the first wall, which helps to reduce the risk of damage to the first wall during the stamping process. The abutting structure can stabilize the first wall to a certain extent, so that the punch head can accurately punch out a groove on the first wall, which helps to improve the processing quality of the workpiece. In addition, since the protrusion is inserted into the accommodating cavity to abut against the first wall, during processing, it is only necessary to put the workpiece on the protrusion, which is simple and convenient to operate.

[0069] As an optional technical solution of an embodiment of the present application, the shell includes a side wall and the first wall, the side wall is arranged around the first wall, one end of the side wall is connected to the first wall along the first direction, and the other end of the side wall is enclosed to form an opening, and the side wall and the first wall jointly define the accommodating cavity; the protrusion is used to be inserted into the accommodating cavity from the opening along the first direction to position the shell.

[0070] In the above technical solution, the sidewalls surround the first wall, and together they define a receiving cavity with an open end. When the projection is inserted into the receiving cavity and abuts the first wall, the sidewalls surround the outside of the projection, limiting relative movement between the projection and the first wall, thereby positioning the housing relative to the projection. Thus, the relative position of the first wall and the projection is limited, making relative movement between the first wall and the projection unlikely during the stamping process. This allows for accurate stamping of the groove in the first wall, which improves the workpiece processing quality.

[0071] As an optional technical solution of the embodiment of the present application, a gap is set between the side wall and the protrusion.

[0072] In the above technical solution, the side wall of the shell is set to a structure that surrounds the outside of the protrusion and has a gap with the protrusion, so that the protrusion can be inserted into the accommodating cavity of the shell or withdrawn from the accommodating cavity of the shell, which helps to reduce the difficulty of inserting or withdrawing the protrusion from the accommodating cavity of the shell and can reduce the scratching phenomenon between the side wall of the shell and the protrusion.

[0073] As an optional technical solution of an embodiment of the present application, the surface of the first wall facing the accommodating cavity is connected to the surface of the side wall facing the accommodating cavity through an arc surface; wherein, along the first direction, the projection of the arc surface is located in the gap between the side wall and the protrusion.

[0074] In the above technical solution, the arc surface formed between the surface of the first wall portion facing the accommodating cavity and the surface of the side wall facing the accommodating cavity is set so that the projection in the first direction is located within the gap between the side wall and the protrusion, so that the protrusion can avoid the arc chamfer structure formed between the inner surface of the first wall portion and the inner surface of the side wall, so as to reduce the interference between the protrusion and the arc surface, thereby reducing the phenomenon of the gap formed between the abutting structure and the first wall portion, thereby improving the abutting effect of the abutting structure on the first wall portion, and then effectively alleviating the phenomenon of bending or deformation of the first wall portion caused by the punching head during the process of punching the first wall portion, which is beneficial to improving the stamping quality of the first wall portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0076] FIG1 is a schematic structural diagram of a stamping device provided in some embodiments of the present application;

[0077] FIG2 is a schematic front view of a stamping device provided in some embodiments of the present application;

[0078] FIG3 is a schematic structural diagram of a stamping device (during stamping) provided in some embodiments of the present application;

[0079] FIG4 is a schematic front view of a stamping device (during stamping) provided in some embodiments of the present application;

[0080] FIG5 is a schematic diagram of the structure of a bump provided in some embodiments of the present application;

[0081] FIG6 is a schematic structural diagram of bumps provided in other embodiments of the present application;

[0082] FIG7 is a schematic structural diagram of bumps provided in some other embodiments of the present application;

[0083] FIG8 is a schematic structural diagram of a punch head provided in some embodiments of the present application;

[0084] FIG9 is a schematic structural diagram of a punch head provided in some other embodiments of the present application;

[0085] FIG10 is a schematic structural diagram of a cutter head provided in some other embodiments of the present application;

[0086] FIG11 is a schematic structural diagram of a punch head provided in some further embodiments of the present application;

[0087] FIG12 is a schematic structural diagram of stamping equipment provided in other embodiments of the present application;

[0088] FIG13 is a schematic front view of a stamping device provided in some other embodiments of the present application;

[0089] FIG14 is a cross-sectional view of a stamping device provided in some other embodiments of the present application;

[0090] FIG15 is a schematic front view of a stamping device provided in some other embodiments of the present application;

[0091] FIG16 is a cross-sectional view of a stamping device provided in some other embodiments of the present application;

[0092] FIG17 is a schematic front view of a stamping device provided in some other embodiments of the present application;

[0093] FIG18 is a schematic structural diagram of a stamping system provided in some embodiments of the present application;

[0094] FIG19 is a cross-sectional view of a stamping system provided by some embodiments of the present application;

[0095] FIG20 is a schematic diagram of the structure of a workpiece provided in some embodiments of the present application;

[0096] FIG21 is an enlarged view of position A in FIG19 .

[0097] Icons: 100 - stamping device; 10 - first component; 11 - abutment structure; 111 - bump; 1111 - abutment surface; 1112 - side surface; 11121 - first side surface; 11122 - second side surface; 20 - second component; 21 - stamping head; 211 - connecting portion; 2111 - positioning groove; 212 - cutter head; 2121 - first cutter body; 21211 - first cutter strip; 2122 - second cutter body; 21221 - second cutter strip ;30-limiting member;31-first limiting portion;32-second limiting portion;40-pressing mechanism;41-pressing seat;410-through hole;42-elastic member;50-first position adjustment structure;51-first adjustment gasket;60-adjusting member;70-second position adjustment structure;71-second adjustment gasket;80-workpiece;81-first wall;82-side wall;83-opening;84-arc surface;85-accommodating cavity;1000-stamping system. DETAILED DESCRIPTION

[0098] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0099] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "comprising" in the specification and claims of this application and the above-mentioned description of the drawings are not intended to limit this application.

[0100] The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0101] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0102] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0103] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0104] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0105] The term "plurality" used in this application refers to two or more (including two).

[0106] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0107] The battery cells can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present application.

[0108] A battery cell typically includes an electrode assembly. This assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of a battery cell, active ions (such as lithium ions) are inserted and removed between the positive and negative electrodes. The separator, placed between the positive and negative electrodes, prevents short circuits between the positive and negative electrodes while allowing the active ions to pass through.

[0109] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0110] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0111] In some embodiments, the separator is a separator membrane. There are many types of separator membranes, and any known separator membrane with a porous structure having good chemical stability and mechanical stability can be selected.

[0112] In some embodiments, the battery cell further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. The electrolyte can be liquid, gel, or solid. Liquid electrolytes include an electrolyte salt and a solvent.

[0113] In some embodiments, the shape of the electrode assembly can be cylindrical, flat, or polygonal.

[0114] In some embodiments, the electrode assembly is provided with tabs that can conduct current from the electrode assembly. The tabs include a positive tab and a negative tab.

[0115] In some embodiments, a battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing may be a steel housing, an aluminum housing, a plastic housing (e.g., polypropylene), a composite metal housing (e.g., a copper-aluminum composite housing), or an aluminum-plastic film.

[0116] As an example, the battery cells may be cylindrical, prismatic, soft-pack or other shaped battery cells. Prismatic battery cells include but are not limited to square-shell, blade-shaped, and polygonal batteries, such as hexagonal batteries.

[0117] For general battery cells, in order to ensure the safety of battery cells, a pressure relief structure is usually provided on the battery cells to release the internal pressure of the battery cells through the pressure relief structure, thereby effectively improving the safety of battery cells. In related technologies, the pressure relief structure is usually formed on the outer shell by an integrated molding process. For example, a notch is punched on the outer shell by a stamping device so that when the internal pressure or temperature of the battery cell reaches a threshold, the pressure relief structure can be actuated and opened to release the internal pressure of the battery cell. However, the details such as the fit between the various components of the existing stamping equipment and the precision of the stamping are difficult to control, resulting in low precision of the notch punched on the outer shell of the battery cell, which will affect the consistency of the notch of the battery cell, and thus is not conducive to improving the production quality of the battery cell, and will affect the pressure relief performance of the battery cell.

[0118] Based on the above considerations, an embodiment of the present application provides a stamping device, comprising a first component and a second component. The first component is provided with an abutment structure for abutting a workpiece. The second component is arranged relative to the first component along a first direction, and the second component and the first component can move closer to or farther away from each other in the first direction. A punch head is provided on the side of the second component facing the first component, and the punch head is used to punch a groove in the workpiece.

[0119] The first component of the stamping device is provided with an abutment structure that can abut against the workpiece and stabilize the workpiece to a certain extent. The second component and the first component can move closer to or farther away from each other in a first direction to drive the punch head toward the abutment structure, thereby causing the punch head to punch a groove in the workpiece abutted by the abutment structure. The stamping device abuts the workpiece via the abutment structure, which helps reduce the risk of damage to the workpiece during the stamping process. The abutment structure can stabilize the workpiece to a certain extent, allowing the punch head to accurately punch a groove in the workpiece, which helps improve the processing quality of the workpiece.

[0120] An embodiment of the present application provides a stamping device that can improve the problem of low precision of the notched grooves punched on the outer shell of a battery cell, which leads to poor consistency of the notched grooves of the battery cell. The specific structure of the stamping device is described in detail below with reference to the accompanying drawings.

[0121] Please refer to Figures 1, 2, 3 and 4. Figure 1 is a schematic diagram of the structure of the stamping equipment 100 provided in some embodiments of the present application. Figure 2 is a schematic diagram of the front view of the stamping equipment 100 provided in some embodiments of the present application. Figure 3 is a schematic diagram of the structure of the stamping equipment 100 (during stamping) provided in some embodiments of the present application. Figure 4 is a schematic diagram of the front view of the stamping equipment 100 (during stamping) provided in some embodiments of the present application. An embodiment of the present application provides a stamping equipment 100, which includes a first component 10 and a second component 20. The first component 10 is provided with an abutment structure 11, and the abutment structure 11 is used to abut the workpiece 80. The second component 20 is arranged opposite to the first component 10 along a first direction, and the second component 20 and the first component 10 can approach or move away from each other in the first direction. A punching head 21 is provided on the side of the second component 20 facing the first component 10, and the punching head 21 is used to punch a groove on the workpiece 80.

[0122] Along the first direction, the second component 20 is disposed opposite to the first component 10. Referring to Figures 1, 2, 3 and 4, the first direction may be the X direction shown in the figures.

[0123] The first component 10 serves as the mounting base for the abutment structure 11. The first component 10 can be fixed to the ground or a frame, or it can be movable relative to the ground or frame. In some implementations, the first component 10 is fixed to the ground or a frame. In this case, the first component 10 can be a lower mold base.

[0124] The abutting structure 11 is a structure for abutting the workpiece 80. The abutting structure 11 can abut the workpiece 80 along the first direction. The abutting structure 11 is connected to the first component 10. It should be noted that the abutting structure 11 can be directly connected to the side of the first component 10 facing the second component 20 in the first direction, or it can be indirectly connected to the side of the first component 10 facing the second component 20 in the first direction through other components. For example, in Figure 2, the abutting structure 11 is directly connected to the side of the first component 10 facing the second component 20 in the first direction. The connection structure between the abutting structure 11 and the first component 10 can be various, such as welding, abutting, bonding or clamping, etc. Similarly, the abutting structure 11 and the first component 10 can also be an integral structure formed by an integral molding process. Of course, in other embodiments, the abutment structure 11 may also be indirectly connected to the side of the first component 10 facing the second component 20 in the first direction X. For example, the abutment structure 11 may be connected to the side of the first component 10 facing the second component 20 in the first direction X through an adjusting gasket, a pad or other components, that is, other components such as an adjusting gasket or a pad may be provided between the abutment structure 11 and the first component 10, so that the distance between the abutment structure 11 and the first component 10 can be adjusted by providing adjusting gaskets or pads of different thicknesses.

[0125] The second component 20 and the first component 10 can move closer to or farther from each other in the first direction. In some embodiments, the first component 10 is fixed, and the second component 20 is movable relative to the first component 10 in the first direction, so that the second component 20 can move closer to or farther from the first component 10. In other embodiments, the second component 20 is fixed, and the first component 10 is movable relative to the second component 20 in the first direction, so that the first component 10 can move closer to or farther from the second component 20. In still other embodiments, both the first component 10 and the second component 20 are movable, so that the first component 10 and the second component 20 can move closer to or farther from each other.

[0126] The punching head 21 serves to punch a groove on the workpiece 80. The punching head 21 is connected to the side of the second component 20 facing the abutment structure 11, so that when the second component 20 moves along the first direction and approaches the abutment structure 11, it can drive the punching head 21 to approach the abutment structure 11, so that the punching head 21 can punch a groove on the workpiece 80.

[0127] Similarly, the punch head 21 may be directly connected to the surface of the second component 20 on the side facing the abutment structure 11 in the first direction, or may be indirectly connected to the surface of the second component 20 on the side facing the abutment structure 11 in the first direction through other components. For example, in FIG2 , the punch head 21 is directly connected to the side of the second component 20 facing the abutment structure 11 in the first direction. The connection structure between the punch head 21 and the second component 20 may be various, such as welding, abutment, bonding, or clamping. Of course, in other embodiments, the punching head 21 may also be indirectly connected to the surface of the second component 20 on the side facing the abutment structure 11 in the first direction. For example, the punching head 21 may be connected to the side of the second component 20 facing the abutment structure 11 in the first direction X through an adjusting gasket, a pad or other components, that is, other components such as an adjusting gasket or a pad may be provided between the punching head 21 and the second component 20, so that the distance between one end of the punching head 21 used to punch the workpiece 80 and the second component 20 in the first direction can be adjusted by providing adjusting gaskets or pads of different thicknesses.

[0128] The first component 10 of the stamping device 100 is provided with an abutment structure 11, which can abut against the workpiece 80 and stabilize the workpiece 80 to a certain extent. The second component 20 can approach the first component 10 along the first direction to drive the punch head 21 to approach the abutment structure 11, so that the punch head 21 punches a groove on the workpiece 80 abutted by the abutment structure 11. The stamping device 100 abuts the workpiece 80 through the abutment structure 11, which is conducive to reducing the risk of damage to the workpiece 80 during the stamping process. The abutment structure 11 can stabilize the workpiece 80 to a certain extent, so that the punch head 21 can accurately punch a groove on the workpiece 80, which is conducive to improving the processing quality of the workpiece 80.

[0129] 1, 2, 3, and 4, in some embodiments, the workpiece 80 is a housing having a receiving cavity 85 and a first wall 81. The abutment structure 11 includes a protrusion 111 disposed on a side of the first component 10 facing the second component 20. The protrusion 111 is configured to be inserted into the receiving cavity 85 to abut the first wall 81. The punch head 21 is configured to punch a groove in the first wall 81.

[0130] Workpiece 80 is a battery cell housing, formed with a receiving cavity 85 having an opening 83 and including a first wall 81. Abutment structure 11 includes a protrusion 111, disposed on the side of first component 10 facing second component 20. A portion of protrusion 111 is inserted through opening 83 into receiving cavity 85 to abut first wall 81. Punch 21 is used to punch a groove on the side of first wall 81 facing away from protrusion 111.

[0131] For example, in Figures 3 and 4, the housing is a structure having an opening 83 formed at one end in the first direction, that is, the housing includes a first wall 81 and a side wall 82, the side wall 82 being arranged around the first wall 81. Along the first direction, one end of the side wall 82 is connected to the first wall 81, and the other end is enclosed to form the opening 83, so that the side wall 82 and the first wall 81 jointly define a receiving cavity 85 having the opening 83 formed in the first direction. The housing is sleeved on the protrusion 111, that is, the protrusion 111 is inserted into the receiving cavity 85 through the opening 83, the protrusion 111 abuts the first wall 81 of the housing, and the side wall 82 surrounds the outside of the protrusion 111, so that the punch head 21 can punch a groove on the side of the first wall 81 of the housing facing away from the receiving cavity 85. Of course, in some embodiments, the first wall 81 may also be the side wall 82 of the shell, that is, the workpiece 80 is the side wall 82 of the shell, and the punching head 21 is used to punch a groove on the side wall 82 of the shell. In this embodiment, the opening 83 of the shell is formed at least at one end of the shell in a direction perpendicular to the first direction. The shell may have an opening 83 at one end in a direction perpendicular to the first direction, or may have openings 83 at both ends, so that a portion of the protrusion 111 is inserted into the accommodating cavity 85 of the shell from the opening 83 in a direction perpendicular to the first direction, so that the protrusion 111 abuts against the side wall 82 of the shell, so that the punching head 21 can punch a groove on the side wall 82 along the first direction.

[0132] It should be noted that, in other embodiments, the workpiece 80 may also be an end cover of a battery cell, that is, the punching head 21 of the punching device 100 is configured to punch a groove on the end cover of the housing.

[0133] The housing has a receiving cavity 85 and a first wall 81, and the abutting structure 11 includes a protrusion 111. The protrusion 111 is inserted into the receiving cavity 85 and abuts the first wall 81, and the punch head 21 punches a groove on the first wall 81. The protrusion 111 and the punch head 21 are respectively located on both sides of the first wall 81. The protrusion 111 abuts the first wall 81 on one side of the first wall 81, and the punch head 21 punches a groove on the other side of the first wall 81. The protrusion 111 and the punch head 21 act on the first wall 81, which is conducive to reducing the risk of damage to the first wall 81 during the stamping process. The abutting structure 11 can stabilize the first wall 81 to a certain extent, so that the punch head 21 can accurately punch a groove on the first wall 81, which is conducive to improving the processing quality of the workpiece 80. In addition, since the protrusion 111 is inserted into the receiving cavity 85 and abuts the first wall 81, during processing, it is only necessary to put the workpiece 80 on the protrusion 111, which is simple and convenient to operate.

[0134] Referring to Figures 1, 2, 3, and 4, in some embodiments, the housing includes a side wall 82 and a first wall 81. The side wall 82 surrounds the first wall 81, one end of the side wall 82 is connected to the first wall 81, and the other end of the side wall 82 forms an opening 83. The side wall 82 and the first wall 81 together define a receiving cavity 85. A protrusion 111 is used to be inserted into the receiving cavity 85 through the opening 83 to position the housing.

[0135] Sidewall 82 surrounds the outer periphery of first wall 81. One end of sidewall 82 is connected to first wall 81, and the other end of sidewall 82, away from first wall 81, encloses an opening 83. Opening 83 is disposed opposite first wall 81. Sidewall 82 and first wall 81 together define a receiving cavity 85 with opening 83 at one end. In this case, first wall 81 serves as the bottom wall of the housing.

[0136] Optionally, the side wall 82 and the first wall 81 may be an integral structure, that is, the side wall 82 and the first wall 81 are integrally formed.

[0137] The housing is sleeved on the outside of the protrusion 111 to achieve the positioning of the housing. When the housing is sleeved on the outside of the protrusion 111, the protrusion 111 can abut against the first wall 81. The side wall 82 can be in contact with the protrusion 111, or the side wall 82 can be set with a gap between the protrusion 111.

[0138] The side wall 82 surrounds the first wall 81 and together defines a receiving cavity 85 with an opening 83 at one end. When the projection 111 is inserted into the receiving cavity 85 and abuts the first wall 81, the side wall 82 surrounds the outside of the projection 111, limiting the relative movement of the projection 111 and the first wall 81, thereby positioning the housing against the projection 111. Thus, the relative position of the first wall 81 and the projection 111 is limited, making it difficult for the first wall 81 to move relative to the projection 111 during the stamping process. This allows for accurate stamping of the groove in the first wall 81, thereby improving the machining quality of the workpiece 80.

[0139] Please refer to Figure 5, which is a schematic diagram of the structure of the protrusion 111 provided in some embodiments of the present application. In some embodiments, the protrusion 111 includes a contact surface 1111 and multiple side surfaces 1112, and the multiple side surfaces 1112 are arranged around the contact surface 1111. Along the first direction, the contact surface 1111 is arranged opposite to the punch head 21. The contact surface 1111 is used to contact the first wall 81, and the contact surface 1111 and each side surface 1112 are directly connected. At this time, the connection position between the contact surface 1111 and the side surface 1112 forms an edge. The protrusion 111 has a simple structure, is easy to manufacture, and has a low production cost.

[0140] Please refer to Figure 6, which is a schematic diagram of the structure of a protrusion 111 provided in some other embodiments of the present application. In other embodiments, the protrusion 111 includes an abutting surface 1111 and multiple side surfaces 1112, with the multiple side surfaces 1112 surrounding the abutting surface 1111. Along the first direction, the abutting surface 1111 is disposed opposite the punch head 21. The abutting surface 1111 is configured to abut the first wall 81, and the abutting surface 1111 and at least one side surface 1112 are transitioned by a rounded corner.

[0141] The protrusion 111 has an abutting surface 1111, which is used to abut the workpiece 80. The abutting surface 1111 is the surface of the protrusion 111 facing the second component 20 along the first direction. In this case, the abutting surface 1111 abuts the workpiece 80 along the first direction. In other words, the protrusion 111 has a surface in the first direction for placing the workpiece 80. This surface is capable of abutting the workpiece 80 in the first direction. Correspondingly, this surface is the abutting surface 1111 of the protrusion 111.

[0142] The multiple side surfaces 1112 are disposed around the abutting surface 1111 , or in other words, the multiple side surfaces 1112 are arranged along the circumference of the abutting surface 1111 .

[0143] It should be noted that the abutting surface 1111 and the side surface 1112 are both outer surfaces of the protrusion 111 .

[0144] "The abutting surface 1111 transitions to at least one side surface 1112 through a rounded corner" means that the abutting surface 1111 and at least one side surface 1112 are connected by a circular arc transition surface. The abutting surface 1111 may transition to one side surface 1112 through a rounded corner, or to two side surfaces 1112 through a rounded corner, or to three side surfaces 1112 through a rounded corner, or to all side surfaces 1112 through a rounded corner.

[0145] Generally speaking, the inner surface of the first wall 81 of the shell and the inner surface of the side wall 82 are connected by a circular arc surface 84. By making the abutting surface 1111 and at least one side surface 1112 transition through a rounded corner, on the one hand, the rounded corner transition can reduce the sharpness of the connection position between the abutting surface 1111 and at least one side surface 1112, so that the protrusion 111 is not easily damaged when inserted into the accommodating cavity 85, which is beneficial to improving the processing quality of the shell. On the other hand, when the inner surface of the first wall 81 of the shell and the inner surface of the side wall 82 are connected by the circular arc surface 84, the abutting surface 1111 of the protrusion 111 and at least one side surface 1112 are transitioned through a rounded corner, which can make at least one side surface 1112 fit with the protrusion 111, which is beneficial to reducing the risk of relative movement between the first wall 81 and the protrusion 111, and is beneficial to improving the processing quality of the workpiece 80.

[0146] Referring to FIG. 6 , in some embodiments, the plurality of side surfaces 1112 include a first side surface 11121 and a second side surface 11122. The first side surface 11121 and the second side surface 11122 are disposed opposite each other along a second direction. The second direction intersects the first direction. The abutting surface 1111 and the first side surface 11121 are transitioned to each other via a rounded corner, and the abutting surface 1111 and the second side surface 11122 are transitioned to each other via a rounded corner.

[0147] Referring to FIG. 6 , the second direction may be the Y direction shown in the figure. In this case, the second direction is perpendicular to the first direction.

[0148] The first side surface 11121 and the second side surface 11122 are two side surfaces 1112 disposed opposite each other among the plurality of side surfaces 1112. The abutting surface 1111 transitions to the first side surface 11121 through a rounded corner, and the abutting surface 1111 also transitions to the second side surface 11122 through a rounded corner. In this case, the abutting surface 1111 transitions to two side surfaces 1112 among the plurality of side surfaces 1112 through a rounded corner.

[0149] Generally speaking, the inner surface of the first wall 81 and the inner surface of the side wall 82 of the housing are connected by an arc surface 84. By making the contact surface 1111 and the first side surface 11121, and the contact surface 1111 and the second side surface 11122 both have rounded corners, the rounded corners can reduce the sharpness of the connection points between the contact surface 1111 and the first side surface 11121, and the connection points between the contact surface 1111 and the second side surface 11122, so that the housing is less likely to be damaged when the protrusion 111 is inserted into the accommodating cavity 85, which is conducive to improving the processing quality of the housing. On the other hand, when the inner surface of the first wall 81 and the inner surface of the side wall 82 of the shell are connected by the arc surface 84, the abutting surface 1111 of the protrusion 111 and the first side surface 11121, and the abutting surface 1111 and the second side surface 11122 are transitioned through rounded corners, which can make the first side surface 11121 and the protrusion 111, and the second side surface 11122 and the protrusion 111 fit together, further reducing the risk of relative movement of the first wall 81 and the protrusion 111 along the second direction, which is beneficial to improving the processing quality of the workpiece 80.

[0150] Please refer to Figure 7, which is a schematic diagram of the structure of the protrusion 111 provided in some embodiments of the present application. The abutting surface 1111 and each side surface 1112 are transitioned through a rounded corner.

[0151] “The abutting surface 1111 and each side surface 1112 transition through a rounded corner” means that the abutting surface 1111 and all side surfaces 1112 transition through a rounded corner.

[0152] Please refer to FIG. 7 . In the embodiment shown in FIG. 7 , the protrusion 111 includes four side surfaces 1112 . The abutting surface 1111 and the four side surfaces 1112 are transitioned through rounded corners.

[0153] By making the contact surface 1111 and each side surface 1112 transition through a rounded corner, on the one hand, the rounded corner transition can reduce the sharpness of the connection point between the contact surface 1111 and each side surface 1112, making it less likely for the protrusion 111 to damage the shell when inserted into the accommodating cavity 85, which is beneficial to improving the processing quality of the shell. On the other hand, when the inner surface of the first wall 81 and the inner surface of the side wall 82 of the shell are connected by the arc surface 84, the contact surface 1111 of the protrusion 111 and each side surface 1112 are transitioned through a rounded corner, which can make each side surface 1112 fit closely with the protrusion 111, further reducing the risk of relative movement between the first wall 81 and the protrusion 111, which is beneficial to improving the processing quality of the workpiece 80.

[0154] Please refer to Figures 1, 2, and 8. Figure 8 is a schematic diagram of the structure of a punch head 21 provided in some embodiments of the present application. In some embodiments, the punch head 21 includes a connecting portion 211 and a cutting head 212. The connecting portion 211 connects the second component 20 and the cutting head 212. The cutting head 212 is provided protrudingly on a surface of the connecting portion 211 facing away from the second component 20 along a first direction. The cutting head 212 is used to punch a groove in the workpiece 80.

[0155] The connecting portion 211 is the portion of the punch head 21 used to connect the cutting head 212 to the second component 20. The cutting head 212 is the primary function of the punch head 21, being used to contact the workpiece 80 and punch a groove in the workpiece 80. The cutting head 212 protrudes in a first direction from the surface of the connecting portion 211 facing away from the second component 20, facilitating the cutting head 212 punching the groove in the workpiece 80.

[0156] The connecting portion 211 serves as a connection, facilitating the connection of the cutting head 212 to the second component 20. The cutting head 212 is configured to contact the workpiece 80 to punch a groove therein. The cutting head 212 is projecting from the surface of the connecting portion 211 facing away from the second component 20. The rigidity of the connecting portion 211 can be greater than that of the cutting head 212, making the punching head 21 less susceptible to breakage during the punching process and thereby improving the stability and lifespan of the punching apparatus 100.

[0157] Referring to FIG. 8 , in some embodiments, the shape of a cross section of the connecting portion 211 perpendicular to the first direction is the same as the shape of a cross section of the cutting head 212 perpendicular to the first direction.

[0158] "The shape of the cross section of the connecting portion 211 perpendicular to the first direction is the same as the shape of the cross section of the cutting head 212 perpendicular to the first direction" means that the shape of the cross section of the connecting portion 211 perpendicular to the first direction is substantially the same as the shape of the cross section of the cutting head 212 perpendicular to the first direction (not necessarily identical). For example, referring to FIG8 , in the embodiment shown in FIG8 , if the cross section of the cutting head 212 perpendicular to the first direction is H-shaped, then the cross section of the connecting portion 211 perpendicular to the first direction may be substantially H-shaped. For another example, if the cross section of the cutting head 212 perpendicular to the first direction is C-shaped, then the cross section of the connecting portion 211 perpendicular to the first direction may be substantially C-shaped.

[0159] By making the shape of the cross section of the connecting portion 211 perpendicular to the first direction the same as the shape of the cross section of the tool head 212 perpendicular to the first direction, the manufacturing cost of the connecting portion 211 is reduced.

[0160] Please refer to Figure 9, which is a schematic structural diagram of a punch head 21 provided in some other embodiments of the present application. In some other embodiments, the connecting portion 211 is a solid columnar structure.

[0161] The connecting portion 211 is a solid structure and a columnar structure. The connecting portion 211 can be a prism structure. In the embodiment shown in FIG9 , the connecting portion 211 is a quadrangular prism structure, that is, a rectangular parallelepiped structure. Of course, the connecting portion 211 can also be a cylindrical structure.

[0162] The connecting portion 211 is configured as a solid columnar structure, so that the connecting portion 211 has high rigidity, and the punching head 21 is not easily broken during the punching process, which is beneficial to improving the stability and life of the punching equipment 100.

[0163] Referring to Figure 9, in some embodiments, the blade head 212 includes a first blade body 2121 and a second blade body 2122. The first blade body 2121 is protruding from a surface of the connecting portion 211 facing away from the second component 20, and the second blade body 2122 is protruding from a surface of the first blade body 2121 facing away from the connecting portion 211. The cross-section of the second blade body 2122 perpendicular to the first direction is the same as the cross-section of the first blade body 2121 perpendicular to the first direction.

[0164] The phrase "the shape of the cross section of the second blade body 2122 perpendicular to the first direction is the same as the shape of the cross section of the first blade body 2121 perpendicular to the first direction" means that the shape of the cross section of the second blade body 2122 perpendicular to the first direction is substantially the same as the shape of the cross section of the first blade body 2121 perpendicular to the first direction (not necessarily identical). For example, referring to FIG9 , in the embodiment shown in FIG9 , if the cross section of the first blade body 2121 perpendicular to the first direction is H-shaped, then the cross section of the second blade body 2122 perpendicular to the first direction may also be substantially H-shaped. For another example, if the cross section of the first blade body 2121 perpendicular to the first direction is C-shaped, then the cross section of the second blade body 2122 perpendicular to the first direction may also be substantially C-shaped.

[0165] The first blade body 2121 is protruded from the surface of the connecting portion 211 away from the second component 20, and the second blade body 2122 is protruded from the surface of the first blade body 2121 away from the connecting portion 211, and the shape of the cross section of the second blade body 2122 perpendicular to the first direction is the same as the shape of the cross section of the first blade body 2121 perpendicular to the first direction, so that the blade head 212 forms a step structure.

[0166] In some embodiments, the first tool body 2121 contacts the workpiece 80 and punches the workpiece 80 , while the second tool body 2122 does not contact the workpiece 80 . In this case, a primary groove can be punched out on the workpiece 80 .

[0167] In other embodiments, the first tool body 2121 and the second tool body 2122 both contact the workpiece 80 and punch the workpiece 80 . In this case, two-level grooves can be punched out on the workpiece 80 .

[0168] The first blade body 2121 is protruding from the surface of the connecting portion 211 facing away from the second component 20, and the second blade body 2122 is protruding from the surface of the first blade body 2121 facing away from the connecting portion 211. The cross-sectional shape of the second blade body 2122 perpendicular to the first direction is the same as the cross-sectional shape of the first blade body 2121 perpendicular to the first direction. In this way, the blade head 212 forms a stepped structure. The first blade body 2121 has a larger cross-sectional area than the second blade body 2122. If the second blade body 2122 is considered the head of the blade head 212 and the first blade body 2121 is considered the root of the blade head 212, this arrangement can increase the strength of the root of the blade head 212 and reduce the risk of the blade head 212 breaking during the stamping process.

[0169] Please refer to Figure 10, which is a schematic diagram of the structure of the blade head 212 provided in some embodiments of the present application. In some embodiments, the first blade body 2121 includes at least one first blade strip 21211, and the second blade body 2122 includes at least one second blade strip 21221. Each second blade strip 21221 is disposed on a surface of a first blade strip 21211 facing away from the connecting portion 211. The width of the second blade strip 21221 is smaller than the width of the corresponding first blade strip 21211.

[0170] The first blade strip 21211 is a strip-shaped structure, and the first blade body 2121 includes at least one first blade strip 21211. Referring to Figure 10, in the embodiment shown in Figure 10, the first blade body 2121 includes three first blade strips 21211, two of which are arranged opposite each other, and the third first blade strip 21211 connects the two aforementioned first blade strips 21211 to form an H-shaped structure.

[0171] The second blade strip 21221 has a strip-like structure. The second blade body 2122 includes at least one second blade strip 21221. The second blade bodies 2122 are arranged in a one-to-one correspondence with the first blade strips 21211. Each second blade strip 21221 is arranged on a surface of the corresponding first blade strip 21211 facing away from the connecting portion 211. Referring to Figure 10, in the embodiment shown in Figure 10, the second blade body 2122 includes three second blade strips 21221. Two of the three second blade strips 21221 are arranged opposite each other, and the third second blade strip 21221 connects the two aforementioned second blade strips 21221 to form an H-shaped structure.

[0172] The width of the first blade strip 21211 is also the dimension of the first blade strip 21211 perpendicular to its extending direction. The width of the second blade strip 21221 is also the dimension of the second blade strip 21221 perpendicular to its extending direction.

[0173] The width of the second blade strip 21221 is smaller than the width of the corresponding first blade strip 21211 so that the second blade strip 21221 protrudes from the surface of the first blade strip 21211 away from the connecting portion 211, and the first blade strip 21211 and the second blade strip 21221 form a step structure.

[0174] The first blade body 2121 includes at least one first blade strip 21211, and the second blade body 2122 includes at least one second blade strip 2122. The first blade strips 21211 and the second blade strips 2122 are arranged in a one-to-one correspondence, with the first blade strips 21211 protruding from the surface of the second blade body 2122 facing away from the connecting portion 211. The width of the first blade strip 21211 is greater than the width of the corresponding second blade strip 21221 to increase the strength of the base of the blade head 212 and reduce the risk of the blade head 212 breaking during the stamping process.

[0175] In some embodiments, the blade head 212 and the connecting portion 211 are integrally formed.

[0176] Integrally formed means that the blade head 212 and the connecting portion 211 are an integral structure when provided. For example, the blade head 212 and the connecting portion 211 can be integrally formed by casting.

[0177] By integrally forming the cutter head 212 and the connecting part 211, it is beneficial to increase the integrity of the cutter head 212 and the connecting part 211, increase the connection strength of the cutter head 212 and the connecting part 211, and reduce the risk of separation of the cutter head 212 and the connecting part 211 during the stamping process of the punching head 21, which is beneficial to improve the overall strength of the punching head 21, reduce the risk of the punching head 21 breaking during the stamping process, and help improve the stability and life of the stamping equipment 100.

[0178] In other embodiments, the cutter head 212 and the connecting portion 211 are separately provided and connected.

[0179] The phrase "the blade head 212 and the connecting portion 211 are separately provided and connected" means that during manufacturing, the blade head 212 and the connecting portion 211 are provided separately and ultimately connected together. For example, the blade head 212 may be detachably connected to the connecting portion 211. In another example, the blade head 212 may be fixedly connected to the connecting portion 211, for example, by welding the blade head 212 to the connecting portion 211.

[0180] By providing and connecting the cutter head 212 and the connecting portion 211 separately, the cutter head 212 and the connecting portion 211 can be processed separately during processing, which is conducive to improving the accuracy of the cutter head 212 and thus improving the accuracy of the processed groove. In addition, when the cutter head 212 is damaged, it can be repaired by replacing the cutter head 212, which is conducive to reducing maintenance costs.

[0181] Please refer to Figure 11, which is a schematic diagram of the structure of the punch head 21 provided in some embodiments of the present application. In some embodiments, the connecting portion 211 is provided with a positioning groove 2111, and the blade head 212 is plugged into the positioning groove 2111.

[0182] The positioning groove 2111 is a groove provided on a side of the connecting portion 211 facing away from the second component 20. The cutter head 212 can be inserted into the positioning groove 2111 to form a plug-in fit with the positioning groove 2111.

[0183] The cutter head 212 and the connecting portion 211 are plug-fitted together, so that the cutter head 212 and the connecting portion 211 can be quickly assembled and disassembled.

[0184] Please refer to Figures 12 and 13. Figure 12 is a schematic diagram of the structure of the stamping equipment 100 provided in other embodiments of the present application. Figure 13 is a schematic diagram of the front view of the stamping equipment 100 provided in other embodiments of the present application. The abutment structure 11 has an abutment surface 1111 for abutting the workpiece 80. The stamping equipment 100 also includes a limiter 30, which is arranged between the first component 10 and the second component 20 along the first direction. The limiter 30 is used to limit the minimum distance between the punching head 21 and the abutment surface 1111.

[0185] The limiting member 30 is arranged between the first component 10 and the second component 20, and the limiting member 30 is configured to limit the minimum distance between the punch head 21 and the abutment surface 1111 in the first direction. That is, the limiting member 30 can provide the first component 10 and the second component 20 with abutment in the first direction respectively, so that when the first component 10 and the second component 20 are both abutting on the limiting member 30, the second component 20 cannot further drive the punch head 21 to move toward the direction close to the abutment surface 1111, so as to achieve the limitation of the minimum distance between the punch head 21 and the abutment surface 1111 in the first direction.

[0186] It should be noted that the structure of the limit member 30 arranged between the first component 10 and the second component 20 can be various. The limit member 30 can be connected to the first component 10 for the second component 20 to abut against, and the limit member 30 can also be connected to the second component 20 for the first component 10 to abut against. Of course, the limit member 30 can also be composed of two separate parts, and the two parts are respectively connected to the first component 10 and the second component 20, so that when the second component 20 moves close to the first component 10, the two parts of the limit member 30 can abut against each other.

[0187] By arranging a limit member 30 between the first component 10 and the second component 20, the limit member 30 can limit the minimum distance between the punching head 21 and the abutment surface 1111 when the punching head 21 approaches the abutment surface 1111 along the first direction and punches a groove on the workpiece 80, thereby controlling the residual thickness of the groove after the punching head 21 punches the groove on the workpiece 80, thereby controlling the residual thickness of the groove after the workpiece 80 is stamped, and further improving the consistency of the thickness of the bottom wall of the groove processed on the workpiece 80, thereby improving the processing quality of the workpiece 80.

[0188] Please refer to Figures 12 and 13. In some embodiments, the limiting member 30 includes a first limiting portion 31 and a second limiting portion 32. One end of the first limiting portion 31 is connected to the first component 10, and one end of the second limiting portion 32 is connected to the second component 20. The other end of the first limiting portion 31 is arranged opposite to the other end of the second limiting portion 32. The other end of the first limiting portion 31 and the other end of the second limiting portion 32 are configured to abut against each other when the second component 20 approaches the abutting surface 1111 along the first direction, so as to limit the minimum distance between the punching head 21 and the abutting surface 1111.

[0189] The limiting member 30 includes a first limiting portion 31 and a second limiting portion 32 arranged opposite to each other along the first direction, that is, the limiting member 30 includes two parts arranged separately, namely the first limiting portion 31 and the second limiting portion 32, and the first limiting portion 31 and the second limiting portion 32 are structures arranged along the first direction.

[0190] The second limiting portion 32 and the first limiting portion 31 are configured to abut against each other when the second component 20 approaches the first component 10 along the first direction, that is, when the second component 20 moves along the first direction toward the abutting surface 1111, the second component 20 can drive the second limiting portion 32 to approach the first limiting portion 31, and when the first limiting portion 31 and the second limiting portion 32 abut against each other, limit the minimum distance between the punch head 21 and the abutting surface 1111 in the first direction.

[0191] For example, one end of the first limiting portion 31 in the first direction is connected to the side of the first component 10 facing the second component 20, and the other end is used for the second limiting portion 32 to abut. Similarly, one end of the second limiting portion 32 in the first direction is connected to the side of the second component 20 facing the first component 10, and the other end is used for the first limiting portion 31 to abut.

[0192] Optionally, the first limiting portion 31 may be connected to the first component 10 by various structures, such as welding, clamping, or bolting. Of course, the second limiting portion 32 may be connected to the second component 20 by various structures, such as welding, clamping, or bolting.

[0193] In some embodiments, the first limiting portion 31 and the second limiting portion 32 both extend along a straight line. For example, the first limiting portion 31 and the second limiting portion 32 are both cylindrical, so that the first limiting portion 31 and the second limiting portion 32 can abut against each other and facilitate processing. Of course, in other embodiments, the first limiting portion 31 and the second limiting portion 32 can also be rectangular, triangular, pentagonal, or other polygonal shapes.

[0194] In other embodiments, there may be a bending or curving structure between the two ends of the first limiting portion 31, and there may be a bending or curving structure between the two ends of the second limiting portion 32, but the end of the first limiting portion 31 away from the first component 10 and the end of the second limiting portion 32 away from the second component 20 are still arranged relative to each other, so that the end of the first limiting portion 31 away from the first component 10 and the end of the second limiting portion 32 away from the second component 20 are abutted against each other.

[0195] The limiting member 30 is provided with a first limiting portion 31 and a second limiting portion 32 which are arranged opposite to each other along the first direction, and the first limiting portion 31 and the second limiting portion 32 are respectively connected to the first component 10 and the second component 20, so that when the second component 20 approaches the abutting surface 1111 along the first direction, the first limiting portion 31 and the second limiting portion 32 can abut against each other to limit the minimum distance between the punching head 21 and the abutting surface 1111 in the first direction. The stamping equipment 100 adopting this structure can realize that the limiting collision between the second component 20 and the first component 10 occurs between the first limiting portion 31 and the second limiting portion 32 of the limiting member 30, thereby effectively alleviating the phenomenon of direct collision between the limiting member 30 and the first component 10 or the second component 20, so as to reduce the phenomenon of damage to the second component 20 or the first component 10, and thus is conducive to improving the service life and reliability of the stamping equipment 100.

[0196] In some embodiments, the difference between the minimum stiffness of the first limiting portion 31 and the minimum stiffness of the second limiting portion 32 is less than or equal to 2×10 10 N / m.

[0197] The minimum stiffness of the first limiting portion 31 is K1, and the minimum stiffness of the second limiting portion 32 is K2, so |K1-K2|≤2×10 10 N / m, that is, the absolute value of the difference between the minimum stiffness of the first limiting portion 31 and the minimum stiffness of the second limiting portion 32 is less than or equal to 2×10 10 N / m.

[0198] By making the difference between the minimum stiffness of the first limiting portion 31 and the minimum stiffness of the second limiting portion 32 less than or equal to 2×10 10 N / m, so that the minimum stiffness of the first limit part 31 and the second limit part 32 are relatively close. In this way, when the first limit part 31 and the second limit part 32 abut against each other, the one with larger stiffness of the first limit part 31 and the second limit part 32 is not likely to cause a large deformation of the one with smaller stiffness of the first limit part 31 and the second limit part 32, which is beneficial to improving the minimum distance limiting effect between the punch head 21 and the abutting surface 1111, so that the residual thickness of the stamped groove is more accurate, which is beneficial to improving the processing quality of the workpiece 80.

[0199] In some embodiments, the minimum stiffness of the first limiting portion 31 is K1, which satisfies: K1 ≥ 6.25 × 10 10 N / m. And / or the minimum stiffness of the second limiting portion 32 is K2, which satisfies: K2 ≥ 6.25 × 10 10 N / m.

[0200] The minimum rigidity of the first limiting portion 31 can be: K1 = 6.25 × 10 10 N / m, 6.3×10 10 N / m, 6.35×10 10 N / m, 6.4×10 10 N / m, 6.45×10 10 N / m, 6.5×10 10 N / m, 6.55×10 10 N / m, 6.6×10 10 N / m, 6.65×10 10 N / m, 6.7×10 10 N / m, etc.

[0201] The minimum rigidity of the second limiting portion 32 can be: K2 = 6.25 × 10 10 N / m, 6.3×10 10 N / m, 6.35×10 10 N / m, 6.4×10 10 N / m, 6.45×10 10 N / m, 6.5×10 10 N / m, 6.55×10 10 N / m, 6.6×10 10 N / m, 6.65×10 10 N / m, 6.7×10 10 N / m, etc.

[0202] By making the minimum stiffness of the first limiting portion 31 and / or the second limiting portion 32 greater than or equal to 6.25×10 10 N / m, so that the first limiting portion 31 and / or the second limiting portion 32 have sufficient rigidity, reducing the risk of bending deformation when the first limiting portion 31 and the second limiting portion 32 abut, which is beneficial to improving the minimum distance limiting effect between the punch head 21 and the abutting surface 1111, making the residual thickness of the punched groove more accurate, which is beneficial to improving the processing quality of the workpiece.

[0203] In some embodiments, along the first direction, a difference between a length of the first limiting portion 31 and a length of the second limiting portion 32 is less than or equal to 10 cm.

[0204] The difference between the distance from one end of the first limiting portion 31 in the first direction for abutting against the second limiting portion 32 to the first component 10 and the distance from one end of the second limiting portion 32 in the first direction for abutting against the first limiting portion 31 to the second component 20 is within 10 cm.

[0205] Exemplarily, both the first limiting portion 31 and the second limiting portion 32 are columnar structures extending along the first direction. Correspondingly, the length difference between the first limiting portion 31 and the second limiting portion 32 is less than or equal to 10 cm.

[0206] By setting the difference in length between the first limiting portion 31 and the second limiting portion 32 in the first direction to be less than or equal to 10 cm, the lengths of the first limiting portion 31 and the second limiting portion 32 in the first direction are close. On the one hand, the contact collision point of the first limiting portion 31 and the second limiting portion 32 can be away from both the base and the second component 20 to reduce the phenomenon of damage to the second component 20 or the abutment platform. On the other hand, the stiffness and structural strength of the first limiting portion 31 and the second limiting portion 32 can be close, so that the first limiting portion 31 and the second limiting portion 32 abut against each other to limit the minimum distance between the punch head 21 and the abutment surface 1111 in the first direction.

[0207] In some embodiments, along the first direction, the length of the first limiting portion 31 is equal to the length of the second limiting portion 32 .

[0208] By setting the lengths of the first limiting portion 31 and the second limiting portion 32 in the first direction to be equal, the stiffness and structural strength of the first limiting portion 31 and the second limiting portion 32 can be further made close, so that the first limiting portion 31 and the second limiting portion 32 can abut against each other to limit the minimum distance between the punch head 21 and the abutting surface 1111 in the first direction.

[0209] Optionally, the area of ​​the minimum cross section of the first limiting portion 31 perpendicular to the first direction is equal to the area of ​​the minimum cross section of the second limiting portion 32 perpendicular to the first direction.

[0210] 12 and 13 , the first limiting portion 31 and the second limiting portion 32 are both columnar structures extending along the first direction. Correspondingly, the minimum cross-sections of the first limiting portion 31 and the second limiting portion 32 are equal.

[0211] Exemplarily, the first limiting portion 31 and the second limiting portion 32 are both cylindrical structures extending along the first direction. Correspondingly, the diameters of the first limiting portion 31 and the second limiting portion 32 are the same, and the area of ​​the end surface of the first limiting portion 31 used to abut against the second limiting portion 32 is equal to the area of ​​the end surface of the second limiting portion 32 used to abut against the first limiting portion 31.

[0212] By setting the areas of the minimum cross sections of the first limiting portion 31 and the second limiting portion 32 perpendicular to the first direction to be equal, the stiffness and structural strength of the first limiting portion 31 and the second limiting portion 32 are made close, thereby facilitating the mutual abutment between the first limiting portion 31 and the second limiting portion 32 to limit the minimum distance between the punch head 21 and the abutment surface 1111 in the first direction.

[0213] 12 and 13 , in some embodiments, the stamping apparatus 100 further includes a first position adjustment structure 50 disposed between the stamping head 21 and the second component 20 along the first direction. The first position adjustment structure 50 is used to adjust the distance between the stamping head 21 and the second component 20.

[0214] The first position adjustment structure 50 is capable of adjusting the minimum distance between the punch head 21 and the second component 20. In some embodiments, the first position adjustment structure 50 is a first adjustment cylinder. One end of the first adjustment cylinder is mounted on the second component 20, and the other end of the first adjustment cylinder is connected to the punch head 21. When the first adjustment cylinder is extended, the distance between the punch head 21 and the second component 20 increases. When the first adjustment cylinder is shortened, the distance between the punch head 21 and the second component 20 decreases.

[0215] The first position adjustment structure 50 is provided to adjust the distance between the punch head 21 and the second component 20 so as to adjust the residual thickness of the groove. When the first position adjustment structure 50 increases the distance between the punch head 21 and the second component 20, the residual thickness of the groove decreases. When the first position adjustment structure 50 decreases the distance between the punch head 21 and the second component 20, the residual thickness of the groove increases.

[0216] In some embodiments, the first position adjustment structure 50 includes a first adjustment spacer 51 .

[0217] The first position adjustment structure 50 includes a first adjustment gasket 51. The distance between the punching head 21 and the second component 20 can be adjusted by replacing the first adjustment gasket 51 of different thicknesses, or by overlapping multiple first adjustment gaskets 51 to adjust the distance between the punching head 21 and the second component 20. This is simple, convenient and low-cost.

[0218] In other embodiments, the first position adjustment structure 50 includes a first adjustment plate. The distance between the punch head 21 and the second component 20 can be adjusted by replacing first adjustment plates of different thicknesses, or by overlapping multiple first adjustment plates to adjust the distance between the punch head 21 and the second component 20, which is simple, convenient, and low-cost.

[0219] 12 and 13 , in some embodiments, the stamping apparatus 100 further includes a pressing mechanism 40 connected to the second component 20. The pressing mechanism 40 is configured to press the workpiece 80 against the abutting structure 11 when the second component 20 approaches the first component 10 along the first direction.

[0220] The clamping mechanism 40 is arranged on the second component 20, so that when the second component 20 moves along the first direction toward the first component 10, it can drive the clamping mechanism 40 to abut the workpiece 80 placed on the abutting surface 1111, so that the clamping mechanism 40 can press the workpiece 80 on the abutting surface 1111.

[0221] The clamping mechanism 40 can press the workpiece 80 against the abutment structure 11 when the second component 20 approaches the first component 10 along the first direction. On the one hand, it can improve the stability of the workpiece 80 during the stamping process to reduce the shaking or slipping of the workpiece 80 during the stamping process, which is beneficial to improving the stamping accuracy of the stamping equipment 100. On the other hand, it can alleviate the phenomenon of warping or bending of the workpiece 80 when it is subjected to the stamping pressure of the stamping head 21, which is beneficial to improving the stamping quality of the stamping equipment 100.

[0222] Referring to Figures 12 and 13 , in some embodiments, the pressing mechanism 40 includes a pressing seat 41 and an elastic member 42. The pressing seat 41 is located on a side of the second component 20 facing the first component 10 along the first direction. The pressing seat 41 is configured to press the workpiece 80 against the abutment structure 11 when the second component 20 approaches the first component 10 along the first direction. The elastic member 42 is disposed between the pressing seat 41 and the second component 20 and is configured to be compressed when the workpiece 80 is pressed against the abutment structure 11.

[0223] One end of the elastic member 42 is connected to the side of the second component 20 facing the first component 10 in the first direction, and the side of the pressing seat 41 facing the second component 20 is connected to the end of the elastic member 42 away from the second component 20, so that the elastic member 42 is connected between the pressing seat 41 and the second component 20 in the first direction, so that when the pressing seat 41 abuts against the workpiece 80, the elastic member 42 can provide elastic force to the pressing seat 41.

[0224] Exemplarily, the elastic member 42 is a spring connected between the pressing seat 41 and the second component 20 . Of course, in other embodiments, the elastic member 42 may also be an elastic rubber or spring sheet connected between the pressing seat 41 and the second component 20 .

[0225] It should be noted that in some embodiments, the pressing mechanism 40 may also have other structures. For example, the pressing mechanism 40 may be provided with only an elastic member 42. The elastic member 42 is connected to the side of the second component 20 facing the first component 10 in the first direction. The elastic member 42 can abut against the workpiece 80 when the second component 20 moves toward the first component 10, thereby pressing the workpiece 80 against the abutting surface 1111. In this embodiment, the elastic member 42 may be a spring or elastic rubber.

[0226] The pressing mechanism 40 is provided with a pressing seat 41 and an elastic member 42. The pressing seat 41 is used to abut against the workpiece 80 placed on the abutting structure 11 to press the workpiece 80 against the abutting structure 11. The pressing seat 41 is a structure connected to the second component 20 through the elastic member 42. When the second component 20 drives the pressing seat 41 to press the workpiece 80 against the abutting structure 11, the elastic member 42 can be compressed and provide elastic force to the pressing seat 41, so that the pressing seat 41 presses the workpiece 80 against the abutting structure 11, the clamping mechanism 40 adopting this structure can, on the one hand, play a certain buffering role through the elastic member 42 to alleviate the phenomenon of rigid contact or rigid collision between the clamping seat 41 and the workpiece 80, which is beneficial to reducing the risk of the clamping seat 41 damaging the workpiece 80; on the other hand, the elastic member 42 can provide elastic force for the clamping seat 41, so that the clamping seat 41 can more firmly press the workpiece 80 on the abutment surface 1111, which is beneficial to improving the stability and reliability of the clamping seat 41 in clamping the workpiece 80.

[0227] Please refer to Figures 12, 13, and 14. Figure 14 is a cross-sectional view of a stamping apparatus 100 provided in other embodiments of the present application. In some embodiments, the end of the punch head 21, which is located away from the second component 20 in the first direction, forms a stamping end for stamping a groove in the workpiece 80. When the pressing seat 41 is not in contact with the workpiece 80, the side of the pressing seat 41 that abuts the workpiece 80 along the first direction is closer to the abutting structure 11 than the stamping end.

[0228] The punching end is an end of the punching head 21 used for punching a workpiece, that is, an end of the punching head 21 facing away from the second part 20 along the first direction.

[0229] When the pressing seat 41 is not in contact with the workpiece 80, along the first direction, the side of the pressing seat 41 that is in contact with the workpiece 80 is closer to the abutment structure 11 than the punching end. In other words, when the elastic member 42 is not compressed, along the first direction, the surface of the pressing seat 41 facing the first component 10 is closer to the abutment structure 11 than the surface of the punch head 21 facing the first component 10. In other words, when the pressing seat 41 is not in contact with the workpiece 80, along the first direction, the pressing seat 41 is closer to the abutment structure 11 than the punch head 21.

[0230] When the pressing seat 41 is not in contact with the workpiece 80, the pressing seat 41 is closer to the abutment structure 11 than the punch head 21 along the first direction. Therefore, during the stamping process, the pressing seat 41 first contacts the workpiece 80 and presses the workpiece 80 against the abutment structure 11. Only then does the punching end of the punch head 21 contact the workpiece 80 and punch a groove in the workpiece 80. This helps reduce the risk of the workpiece 80 warping or bending when subjected to the stamping force of the punch head 21, thereby improving the stamping quality of the stamping device 100.

[0231] 12 , 13 and 14 , in some embodiments, the pressing seat 41 is provided with a through hole 410 for the punching head 21 to pass through.

[0232] The pressing seat 41 is provided with a through hole 410, which passes through two opposite surfaces of the pressing seat 41 along a first direction. The position of the through hole 410 corresponds to the position of the punch 21, so as to allow at least part of the punch 21 to pass through the pressing seat 41 through the through hole 410.

[0233] The pressing seat 41 is provided with a through hole 410 for the punching head 21 to pass through, so that the punching head 21 can punch the workpiece 80 pressed by the pressing seat 41 after passing through the through hole 410. The stamping equipment 100 with this structure facilitates the punching head 21 to punch the workpiece 80, and enables the pressing seat 41 to press the area of ​​the workpiece 80 surrounding the punching head 21, which is conducive to further improving the effect of the pressing seat 41 pressing the workpiece 80.

[0234] Please refer to Figures 15 and 16. Figure 15 is a schematic front view of a stamping device 100 provided in some other embodiments of the present application. Figure 16 is a cross-sectional view of a stamping device 100 provided in some other embodiments of the present application. In some other embodiments, the stamping device 100 includes an adjustment member 60. The adjustment member 60 is disposed between the second component 20 and the pressing seat 41 along a first direction. The adjustment member 60 is used to adjust the minimum distance between the pressing seat 41 and the second component 20.

[0235] The adjusting member 60 is disposed between the second component 20 and the pressing seat 41 along the first direction. The adjusting member 60 can be connected to the side of the second component 20 facing the pressing seat 41, or the adjusting member 60 can be connected to the side of the pressing seat 41 facing the second component 20. The adjusting member 60 can be detachably connected to the second component 20 or the pressing seat 41 to facilitate replacement of adjusting members 60 of different thicknesses to adjust the minimum distance between the pressing seat 41 and the second component 20.

[0236] 15 and 16 , the adjusting member 60 is provided with a first avoidance hole, which corresponds to the position of the punch head 21. The first avoidance hole is used to avoid the punch head 21, allowing at least a portion of the punch head 21 to pass through the first avoidance hole and extend into the through hole 410. The adjusting member 60 is also provided with a second avoidance hole, and the elastic member 42 is inserted into the second avoidance hole.

[0237] Referring to Figures 15 and 16 , the adjusting member 60 may be a plate structure. When the adjusting member 60 is thinner along the first direction, the minimum distance between the pressing seat 41 and the second component 20 is smaller, and the punch head 21 can extend further from the pressing seat 41, thereby reducing the residual thickness of the groove. When the adjusting member 60 is thicker along the first direction, the minimum distance between the pressing seat 41 and the second component 20 is larger, and the punch head 21 can extend further from the pressing seat 41, thereby increasing the residual thickness of the groove.

[0238] In other embodiments, the adjusting member 60 may also be an adjusting gasket.

[0239] By providing an adjustment member 60 to adjust the minimum distance between the pressing seat 41 and the second component 20, the residual thickness of the groove punched by the punch head 21 on the workpiece 80 can be controlled. When the adjustment member 60 reduces the minimum distance between the pressing seat 41 and the second component 20, the punch head 21 can extend further from the pressing seat 41, thereby reducing the residual thickness of the groove. When the adjustment member 60 increases the minimum distance between the pressing seat 41 and the second component 20, the punch head 21 can extend further from the pressing seat 41, thereby increasing the residual thickness of the groove.

[0240] Please refer to Figure 17, which is a front view of a stamping device 100 provided in some embodiments of the present application. The stamping device 100 also includes a second position adjustment structure 70, which is disposed between the abutting structure 11 and the first component 10 and is used to adjust the minimum distance between the abutting structure 11 and the first component 10.

[0241] The second position adjustment structure 70 is capable of adjusting the minimum distance between the abutment structure 11 and the first component 10. In some embodiments, the second position adjustment structure 70 is a second adjustment cylinder. One end of the second adjustment cylinder is mounted on the first component 10, and the other end of the second adjustment cylinder is connected to the abutment structure 11. When the second adjustment cylinder is extended, the distance between the abutment structure 11 and the first component 10 increases. When the second adjustment cylinder is shortened, the distance between the abutment structure 11 and the first component 10 decreases.

[0242] The second position adjustment structure 70 is provided to adjust the distance between the abutment structure 11 and the first component 10, thereby adjusting the residual thickness of the groove. When the second position adjustment structure 70 increases the distance between the abutment structure 11 and the first component 10, the residual thickness of the groove decreases. When the second position adjustment structure 70 decreases the distance between the abutment structure 11 and the first component 10, the residual thickness of the groove increases.

[0243] In some embodiments, the second position adjustment structure 70 includes a second adjustment spacer 71 .

[0244] The second position adjustment structure 70 includes a second adjustment gasket 71. The distance between the abutting structure 11 and the first component 10 can be adjusted by replacing the second adjustment gasket 71 of different thicknesses, or by overlapping multiple second adjustment gaskets 71 to adjust the distance between the abutting structure 11 and the first component 10. This is simple, convenient and low-cost.

[0245] In other embodiments, the second position adjustment structure 70 includes a second adjustment plate. The distance between the abutting structure 11 and the first component 10 can be adjusted by replacing the second adjustment plates with different thicknesses, or by overlapping multiple second adjustment plates to adjust the distance between the abutting structure 11 and the first component 10. This is simple, convenient, and low-cost.

[0246] Please refer to Figures 18, 19 and 20. Figure 18 is a schematic diagram of the structure of the stamping system 1000 provided in some embodiments of the present application. Figure 19 is a cross-sectional view of the stamping system 1000 provided in some embodiments of the present application. Figure 20 is a schematic diagram of the structure of the workpiece 80 provided in some embodiments of the present application. The embodiments of the present application also provide a production system, the production system including the workpiece 80 and the above-mentioned stamping equipment 100, and the abutment structure 11 abuts the workpiece 80.

[0247] Please refer to Figures 18, 19 and 20. In some embodiments, the workpiece 80 is a shell having a accommodating cavity 85 and a first wall 81; the abutment structure 11 includes a protrusion 111 arranged on the side of the first component 10 facing the second component 20, and the protrusion 111 is used to be inserted into the accommodating cavity 85 to abut the first wall 81, and the punching head 21 is used to punch a groove on the first wall 81.

[0248] Exemplarily, workpiece 80 is the housing of a battery cell. That is, punch head 21 of punching apparatus 100 is configured to punch a groove in the housing. A battery cell includes a housing, an electrode assembly, and an electrolyte. The electrode assembly and the electrolyte are both contained within the housing. The housing includes a housing and an end cap. The housing has a receiving cavity 85 formed therein, and the receiving cavity 85 has an opening 83. That is, the housing is a hollow structure with at least one end open. The end cap is sealed over opening 83 of the housing to form a sealed connection, thereby forming a sealed space for accommodating the electrode assembly and the electrolyte.

[0249] Workpiece 80 is a battery cell housing, formed with a receiving cavity 85 having an opening 83 and including a first wall 81. Abutment structure 11 includes a protrusion 111, disposed on the side of first component 10 facing second component 20. A portion of protrusion 111 is inserted through opening 83 into receiving cavity 85 to abut first wall 81. Punch 21 is used to punch a groove on the side of first wall 81 facing away from protrusion 111.

[0250] For example, in Figures 18, 19, and 20, the housing is a structure having an opening 83 formed at one end in the first direction, that is, the housing includes a first wall 81 and a side wall 82, the side wall 82 being arranged around the first wall 81. Along the first direction, one end of the side wall 82 is connected to the first wall 81, and the other end is enclosed to form the opening 83, so that the side wall 82 and the first wall 81 jointly define a receiving cavity 85 having the opening 83 formed in the first direction. The housing is sleeved on the protrusion 111, that is, the protrusion 111 is inserted into the receiving cavity 85 through the opening 83, the protrusion 111 abuts the first wall 81 of the housing, and the side wall 82 surrounds the outside of the protrusion 111, so that the punch head 21 can punch a groove on the side of the first wall 81 of the housing facing away from the receiving cavity 85. Of course, in some embodiments, the first wall 81 may also be the side wall 82 of the shell, that is, the workpiece 80 is the side wall 82 of the shell, and the punching head 21 is used to punch a groove on the side wall 82 of the shell. In this embodiment, the opening 83 of the shell is formed at least at one end of the shell in a direction perpendicular to the first direction. The shell may have an opening 83 at one end in a direction perpendicular to the first direction, or may have openings 83 at both ends, so that a portion of the protrusion 111 is inserted into the accommodating cavity 85 of the shell from the opening 83 in a direction perpendicular to the first direction, so that the protrusion 111 abuts against the side wall 82 of the shell, so that the punching head 21 can punch a groove on the side wall 82 along the first direction.

[0251] It should be noted that, in other embodiments, the workpiece 80 may also be an end cover of a battery cell, that is, the punching head 21 of the punching device 100 is configured to punch a groove on the end cover of the housing.

[0252] The housing has a receiving cavity 85 and a first wall 81, and the abutting structure 11 includes a protrusion 111. The protrusion 111 is inserted into the receiving cavity 85 and abuts the first wall 81, and the punch head 21 punches a groove on the first wall 81. The protrusion 111 and the punch head 21 are respectively located on both sides of the first wall 81. The protrusion 111 abuts the first wall 81 on one side of the first wall 81, and the punch head 21 punches a groove on the other side of the first wall 81. The protrusion 111 and the punch head 21 act on the first wall 81, which is conducive to reducing the risk of damage to the first wall 81 during the stamping process. The abutting structure 11 can stabilize the first wall 81 to a certain extent, so that the punch head 21 can accurately punch a groove on the first wall 81, which is conducive to improving the processing quality of the workpiece 80. In addition, since the protrusion 111 is inserted into the receiving cavity 85 and abuts the first wall 81, during processing, it is only necessary to put the workpiece 80 on the protrusion 111, which is simple and convenient to operate.

[0253] Referring to Figures 18, 19, and 20, in some embodiments, the housing includes a side wall 82 and a first wall 81. The side wall 82 surrounds the first wall 81. Along a first direction, one end of the side wall 82 is connected to the first wall 81, and the other end of the side wall 82 encloses an opening 83. The side wall 82 and the first wall 81 together define a receiving cavity 85. The protrusion 111 is used to be inserted into the receiving cavity 85 from the opening 83 along the first direction to position the housing.

[0254] The side wall 82 is arranged around the outer periphery of the first wall 81, one end of the side wall 82 is connected to the first wall 81, and the other end of the side wall 82 away from the first wall 81 is enclosed to form an opening 83, and the opening 83 is arranged opposite to the first wall 81. The side wall 82 and the first wall 81 jointly define a accommodating cavity 85 with an opening 83 at one end. In this case, the first wall 81 is the bottom wall of the shell. Optionally, the side wall 82 and the first wall 81 can be an integral structure, that is, the side wall 82 and the first wall 81 are integrally formed. The shell is sleeved on the outside of the protrusion 111 to achieve positioning of the shell. When the shell is sleeved on the outside of the protrusion 111, the protrusion 111 can abut against the first wall 81. The side wall 82 can be in contact with the protrusion 111, or the side wall 82 can be set with a gap between the protrusion 111 and the protrusion 111.

[0255] The side wall 82 surrounds the first wall 81 and together defines a receiving cavity 85 with an opening 83 at one end. When the projection 111 is inserted into the receiving cavity 85 and abuts the first wall 81, the side wall 82 surrounds the outside of the projection 111, limiting the relative movement of the projection 111 and the first wall 81, thereby positioning the housing against the projection 111. Thus, the relative position of the first wall 81 and the projection 111 is limited, making it difficult for the first wall 81 to move relative to the projection 111 during the stamping process. This allows for accurate stamping of the groove in the first wall 81, thereby improving the machining quality of the workpiece 80.

[0256] In some embodiments, a gap is set between the sidewall 82 and the bump 111 .

[0257] “A gap is set between the side wall 82 and the bump 111 ” means that the side wall 82 and the bump 111 are not in contact with each other, and there is a distance between the side wall 82 and the bump 111 .

[0258] By setting the side wall 82 of the shell to be a structure that surrounds the outside of the protrusion 111 and has a gap with the protrusion 111, it is convenient to insert the protrusion 111 into the accommodating cavity 85 of the shell or withdraw it from the accommodating cavity 85 of the shell, thereby reducing the difficulty of inserting or withdrawing the protrusion 111 from the accommodating cavity 85 of the shell and reducing the scratching phenomenon between the side wall 82 of the shell and the protrusion 111.

[0259] Please refer to Figures 18, 19, 20, and 21. Figure 21 is an enlarged view of position A in Figure 19. In some embodiments, the surface of the first wall 81 facing the accommodating cavity 85 and the surface of the side wall 82 facing the accommodating cavity 85 are connected by an arc surface 84. Along the first direction, the projection of the arc surface 84 is located within the gap between the side wall 82 and the protrusion 111.

[0260] The surface of the first wall 81 facing the accommodating cavity 85 and the surface of the side wall 82 facing the accommodating cavity 85 are connected by an arc surface 84. That is, the inner surface of the first wall 81 of the shell and the inner surface of the side wall 82 are connected by the arc surface 84, so that an arc chamfer structure is formed between the inner surface of the first wall 81 and the inner surface of the side wall 82.

[0261] Along the first direction, the projection of the arc surface 84 is located in the gap between the side wall 82 and the protrusion 111, that is, the size of the gap formed between the side wall 82 and the protrusion 111 in the direction perpendicular to the first direction is larger than the size of the arc surface 84 in the direction perpendicular to the first direction, so that the abutting surface 1111 of the protrusion 111 and the arc surface 84 are arranged at intervals.

[0262] By setting the arc surface 84 formed between the surface of the first wall 81 facing the accommodating cavity 85 and the surface of the side wall 82 facing the accommodating cavity 85 so that the projection in the first direction is located within the gap between the side wall 82 and the protrusion 111, the protrusion 111 can avoid the arc chamfer structure formed between the inner surface of the first wall 81 and the inner surface of the side wall 82, so as to reduce the interference between the protrusion 111 and the arc surface 84, thereby reducing the phenomenon of the gap formed between the abutment structure 11 and the first wall 81, thereby improving the abutment effect of the abutment structure 11 on the first wall 81, and further effectively alleviating the phenomenon of bending or deformation of the first wall 81 caused by the punch head 21 during the process of punching the first wall 81, which is beneficial to improving the stamping quality of the first wall 81.

[0263] According to some embodiments of the present application, please refer to Figures 1 to 17.

[0264] An embodiment of the present application provides a stamping device 100, which includes a first component 10 and a second component 20. The first component 10 is provided with an abutment structure 11, and the abutment structure 11 is used to abut a workpiece 80. The second component 20 is arranged opposite to the first component 10 along a first direction, and the second component 20 can approach or move away from the first component 10 along the first direction. A punching head 21 is provided on the side of the second component 20 facing the first component 10, and the punching head 21 is used to punch a groove on the workpiece 80. The first component 10 of the stamping device 100 is provided with an abutment structure 11, and the abutment structure 11 can abut against the workpiece 80 and stabilize the workpiece 80 to a certain extent. The second component 20 can approach the first component 10 along the first direction to drive the punching head 21 to approach the abutment structure 11, so that the punching head 21 punches a groove on the workpiece 80 abutted by the abutment structure 11. The stamping equipment 100 abuts the workpiece 80 through the abutment structure 11, which is beneficial to reducing the risk of damage to the workpiece 80 during the stamping process. The abutment structure 11 can stabilize the workpiece 80 to a certain extent, so that the punching head 21 can accurately punch out a groove on the workpiece 80, which is beneficial to improving the processing quality of the workpiece 80.

[0265] The workpiece 80 is a shell, which includes a side wall 82 and a first wall 81. The side wall 82 is arranged around the first wall 81, one end of the side wall 82 is connected to the first wall 81, and the other end of the side wall 82 is enclosed to form an opening 83. The side wall 82 and the first wall 81 jointly define a receiving cavity 85. The protrusion 111 is used to be inserted into the receiving cavity 85 through the opening 83 to position the shell. The side wall 82 is arranged around the first wall 81, and the side wall 82 and the first wall 81 jointly define a receiving cavity 85 with an opening 83 at one end. When the protrusion 111 is inserted into the receiving cavity 85 and abuts the first wall 81, the side wall 82 is arranged on the outside of the protrusion 111. The side wall 82 can limit the relative movement of the protrusion 111 and the first wall 81, so that the shell is positioned on the protrusion 111. In this way, the relative position of the first wall 81 and the protrusion 111 is limited, so that the first wall 81 is not easy to move relative to the protrusion 111 during the stamping process, so that the groove can be accurately stamped on the first wall 81, which is beneficial to improving the processing quality of the workpiece 80.

[0266] The protrusion 111 includes a contact surface 1111 and a plurality of side surfaces 1112, and the plurality of side surfaces 1112 are arranged around the contact surface 1111. Along the first direction, the contact surface 1111 is arranged opposite to the punch head 21, and the contact surface 1111 is used to contact the first wall 81. The contact surface 1111 and each side surface 1112 are transitioned through rounded corners. By making the contact surface 1111 and each side surface 1112 transition through rounded corners, on the one hand, the rounded corner transition can reduce the sharpness of the connection point between the contact surface 1111 and each side surface 1112, so that the protrusion 111 is not easily damaged when inserted into the accommodating cavity 85, which is conducive to improving the processing quality of the shell. On the other hand, when the inner surface of the first wall 81 of the shell and the inner surface of the side wall 82 are connected by the arc surface 84, the abutting surface 1111 of the protrusion 111 and each side surface 1112 are transitioned through rounded corners, which can make each side surface 1112 fit with the protrusion 111, further reducing the risk of relative movement between the first wall 81 and the protrusion 111, which is beneficial to improving the processing quality of the workpiece 80.

[0267] In some embodiments, the punch head 21 includes a connecting portion 211 and a cutting head 212. The connecting portion 211 connects the second component 20 and the cutting head 212. The cutting head 212 is protruding from a surface of the connecting portion 211 facing away from the second component 20 along a first direction. The cutting head 212 is used to punch a groove on the workpiece 80. The shape of a cross section of the connecting portion 211 perpendicular to the first direction is the same as the shape of a cross section of the cutting head 212 perpendicular to the first direction. By making the shape of the cross section of the connecting portion 211 perpendicular to the first direction and the shape of the cross section of the cutting head 212 perpendicular to the first direction the same, the manufacturing cost of the connecting portion 211 is reduced.

[0268] In other embodiments, the connecting portion 211 is a solid columnar structure. Setting the connecting portion 211 as a solid columnar structure makes the connecting portion 211 have higher rigidity, making the punch head 21 less likely to break during the punching process, which is beneficial to improving the stability and life of the punching device 100.

[0269] The blade head 212 includes a first blade body 2121 and a second blade body 2122. The first blade body 2121 is protruding from the surface of the connecting portion 211 facing away from the second component 20, and the second blade body 2122 is protruding from the surface of the first blade body 2121 facing away from the connecting portion 211. The cross-sectional shape of the second blade body 2122 perpendicular to the first direction is the same as the cross-sectional shape of the first blade body 2121 perpendicular to the first direction. The first blade body 2121 is protruding from the surface of the connecting portion 211 facing away from the second component 20, and the second blade body 2122 is protruding from the surface of the first blade body 2121 facing away from the connecting portion 211. The cross-sectional shape of the second blade body 2122 perpendicular to the first direction is the same as the cross-sectional shape of the first blade body 2121 perpendicular to the first direction. In this way, the blade head 212 forms a stepped structure. Among them, the second blade body 2122 mainly contacts the workpiece 80 and punches a groove on the workpiece 80. The first blade body 2121 has a larger cross-sectional area than the second blade body 2122. The second blade body 2122 is regarded as the head of the blade head 212, and the first blade body 2121 is regarded as the root of the blade head 212. This setting can increase the strength of the root of the blade head 212 and reduce the risk of the blade head 212 breaking during the stamping process.

[0270] The cutter head 212 and the connecting portion 211 are separately provided and connected. By providing the cutter head 212 and the connecting portion 211 separately and connecting them, the cutter head 212 and the connecting portion 211 can be machined separately during machining, which helps improve the precision of the cutter head 212 and, consequently, the precision of the machined grooves. Furthermore, if the cutter head 212 is damaged, it can be repaired by replacing it, which helps reduce repair costs.

[0271] The stamping equipment 100 also includes a first position adjustment structure 50, which is arranged between the stamping head 21 and the second component 20 along the first direction. The first position adjustment structure 50 is used to adjust the distance between the stamping head 21 and the second component 20. By setting the first position adjustment structure 50, the distance between the stamping head 21 and the second component 20 is adjusted to facilitate adjustment of the residual thickness of the groove. When the first position adjustment structure 50 increases the distance between the stamping head 21 and the second component 20, the residual thickness of the groove decreases. When the first position adjustment structure 50 decreases the distance between the stamping head 21 and the second component 20, the residual thickness of the groove increases.

[0272] The second position adjustment structure 70 includes a second adjustment gasket 71. The second position adjustment structure 70 includes the second adjustment gasket 71. The distance between the abutting structure 11 and the first component 10 can be adjusted by replacing the second adjustment gasket 71 with different thicknesses. Multiple second adjustment gaskets 71 can also be overlapped to adjust the distance between the abutting structure 11 and the first component 10. This is simple, convenient, and low-cost.

[0273] The stamping equipment 100 also includes a clamping mechanism 40, which is connected to the second component 20. The clamping mechanism 40 is used to press the workpiece 80 against the abutment structure 11 when the second component 20 approaches the first component 10 along the first direction. The clamping mechanism 40 can press the workpiece 80 against the abutment structure 11 when the second component 20 approaches the first component 10 along the first direction. On the one hand, it can improve the stability of the workpiece 80 during the stamping process to reduce the phenomenon of shaking or slipping of the workpiece 80 during the stamping process, which is beneficial to improving the stamping accuracy of the stamping equipment 100. On the other hand, it can alleviate the phenomenon of warping or bending of the workpiece 80 when it is subjected to the stamping force of the punch head 21, which is beneficial to improving the stamping quality of the stamping equipment 100.

[0274] The pressing mechanism 40 includes a pressing seat 41 and an elastic member 42. The pressing seat 41 is located on the side of the second component 20 facing the first component 10 along the first direction. The pressing seat 41 is used to press the workpiece 80 onto the abutment structure 11. The elastic member 42 is arranged between the pressing seat 41 and the second component 20. The pressing mechanism 40 is provided with a pressing seat 41 and an elastic member 42. The pressing seat 41 is used to abut the workpiece 80 placed on the abutment structure 11 to press the workpiece 80 onto the abutment structure 11, and the pressing seat 41 is a structure interconnected with the second component 20 through the elastic member 42, so that when the second component 20 drives the pressing seat 41 to press the workpiece 80 onto the abutment structure 11, the elastic member 42 can be compressed and provide elastic force to the pressing seat 41, so that the pressing seat 41 presses the workpiece 80 onto the abutment structure 11, the clamping mechanism 40 adopting this structure can, on the one hand, play a certain buffering role through the elastic member 42 to alleviate the phenomenon of rigid contact or rigid collision between the clamping seat 41 and the workpiece 80, which is beneficial to reducing the risk of the clamping seat 41 damaging the workpiece 80; on the other hand, the elastic member 42 can provide elastic force for the clamping seat 41, so that the clamping seat 41 can more firmly press the workpiece 80 on the abutment surface 1111, which is beneficial to improving the stability and reliability of the clamping seat 41 in clamping the workpiece 80.

[0275] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A stamping device, wherein: include: A first component is provided with an abutment structure, wherein the abutment structure is used to abut against a workpiece; The second component is arranged opposite to the first component along a first direction. The second component and the first component can approach or move away from each other in the first direction. A punching head is provided on the side of the second component facing the first component, and the punching head is used to punch a groove on the workpiece.

2. The stamping equipment according to claim 1, wherein: The workpiece is a shell having a receiving cavity and a first wall; The abutment structure includes a protrusion provided on a side of the first component facing the second component. The protrusion is used to be inserted into the accommodating cavity to abut the first wall. The punching head is used to punch a groove on the first wall.

3. The stamping equipment according to claim 2, wherein: The housing includes a side wall and the first wall, wherein the side wall is disposed around the first wall, one end of the side wall is connected to the first wall, and the other end of the side wall is enclosed to form an opening, and the side wall and the first wall together define the accommodating cavity; The protrusion is used to be inserted into the accommodating cavity through the opening to position the shell.

4. The stamping equipment according to claim 2, wherein: The protrusion includes a contact surface and multiple side surfaces, and the multiple side surfaces are arranged around the contact surface. Along the first direction, the contact surface is arranged opposite to the punching head. The contact surface is used to contact the first wall, and the contact surface and at least one of the side surfaces are transitioned through a rounded corner.

5. The stamping equipment according to claim 4, wherein: The plurality of side surfaces include a first side surface and a second side surface, the first side surface and the second side surface are arranged opposite to each other along a second direction, and the second direction intersects with the first direction; The abutting surface and the first side surface are transitioned through a rounded corner, and the abutting surface and the second side surface are transitioned through a rounded corner.

6. The stamping equipment according to claim 4, wherein: The abutting surface transitions to each of the side surfaces through a rounded corner.

7. The stamping equipment according to any one of claims 1 to 6, wherein: The punching head includes a connecting portion and a cutter head, wherein the connecting portion connects the second component and the cutter head. Along the first direction, the cutter head is protruded on the surface of the connecting portion away from the second component, and the cutter head is used to punch a groove on the workpiece.

8. The stamping equipment according to claim 7, wherein: A shape of a cross section of the connecting portion perpendicular to the first direction is the same as a shape of a cross section of the tool head perpendicular to the first direction.

9. The stamping equipment according to claim 7, wherein: The connecting portion is a solid columnar structure.

10. The stamping device according to any one of claims 7 to 9, wherein: The cutter head includes a first cutter body and a second cutter body, the first cutter body is protruded from the surface of the connecting portion facing away from the second component, the second cutter body is protruded from the surface of the first cutter body facing away from the connecting portion, and the shape of the cross section of the second cutter body perpendicular to the first direction is the same as the shape of the cross section of the first cutter body perpendicular to the first direction.

11. The stamping apparatus according to claim 10, wherein: The first blade body includes at least one first blade strip, and the second blade body includes at least one second blade strip. Each second blade strip is correspondingly arranged on a surface of the first blade strip facing away from the connecting portion, and the width of the second blade strip is smaller than the width of the corresponding first blade strip.

12. The stamping device according to any one of claims 7 to 11, wherein: The cutter head and the connecting portion are integrally formed.

13. The stamping device according to any one of claims 7 to 11, wherein: The cutter head and the connecting portion are separately arranged and connected.

14. The stamping apparatus according to claim 13, wherein: The connecting portion is provided with a positioning groove, and the cutter head is plugged into and matched with the positioning groove.

15. The stamping device according to any one of claims 1 to 14, wherein: The abutment structure has an abutment surface for abutting against a workpiece; The stamping equipment further includes a limiting member, which is disposed between the first component and the second component along the first direction, and is used to limit a minimum distance between the stamping head and the abutting surface.

16. The stamping apparatus according to claim 15, wherein: The limiting member includes a first limiting portion and a second limiting portion, one end of the first limiting portion is connected to the first component, one end of the second limiting portion is connected to the second component, the other end of the first limiting portion is arranged opposite to the other end of the second limiting portion, and the other end of the first limiting portion and the other end of the second limiting portion are configured to abut each other when the second component approaches the abutting surface along the first direction, so as to limit the minimum distance between the punching head and the abutting surface.

17. The stamping apparatus according to claim 16, wherein: The difference between the minimum stiffness of the first limiting portion and the minimum stiffness of the second limiting portion is less than or equal to 2×10 10 N / m.

18. The stamping apparatus according to claim 16 or 17, wherein: The minimum stiffness of the first limiting portion is K1, which satisfies: K1 ≥ 6.25 × 10 10 N / m; and / or The minimum stiffness of the second limiting portion is K2, which satisfies: K2 ≥ 6.25 × 10 10 N / m.

19. The punching apparatus according to any one of claims 16 to 18, wherein: Along the first direction, a difference between a length of the first limiting portion and a length of the second limiting portion is less than or equal to 10 cm.

20. The stamping apparatus according to claim 19, wherein Along the first direction, the length of the first limiting portion is equal to the length of the second limiting portion.

21. The punching apparatus according to any one of claims 16 to 20, wherein: The area of ​​the minimum cross section of the first limiting portion perpendicular to the first direction is equal to the area of ​​the minimum cross section of the second limiting portion perpendicular to the first direction.

22. The stamping device according to any one of claims 1 to 21, wherein: The stamping equipment further includes a first position adjustment structure, which is disposed between the stamping head and the second component along the first direction, and is used to adjust the distance between the stamping head and the second component.

23. The stamping apparatus according to claim 22, wherein: The first position adjustment structure includes a first adjustment gasket.

24. The stamping device according to any one of claims 1 to 23, wherein: The stamping equipment further includes a pressing mechanism connected to the second component, and the pressing mechanism is used to press the workpiece against the abutting structure when the second component approaches the first component along the first direction.

25. The stamping apparatus according to claim 24, wherein: The pressing mechanism comprises: a pressing seat, located on a side of the second component facing the first component along the first direction, the pressing seat being used to press the workpiece against the abutting structure when the second component approaches the first component along the first direction; An elastic member is provided between the pressing seat and the second component, and is used for being compressed when the workpiece is pressed against the abutting structure.

26. The stamping apparatus according to claim 25, wherein: An end of the punch head in the first direction away from the second component forms a punching end for punching a groove on the workpiece; When the pressing seat is not in contact with the workpiece, along the first direction, the side of the pressing seat for abutting the workpiece is closer to the abutting structure than the punching end.

27. The punching apparatus according to claim 25 or 26, wherein: The pressing seat is provided with a through hole for the punching head to pass through.

28. The punching apparatus according to any one of claims 25 to 27, wherein: The stamping equipment includes an adjusting member, which is arranged between the second component and the pressing seat along the first direction, and is used to adjust the minimum distance between the pressing seat and the second component.

29. The stamping apparatus according to any one of claims 1 to 28, wherein: The stamping equipment further includes a second position adjustment structure, which is disposed between the abutting structure and the first component, and is used to adjust a minimum distance between the abutting structure and the first component.

30. The stamping apparatus according to claim 29, wherein: The second position adjustment structure includes a second adjustment gasket.

31. A production system, wherein: include: Workpiece; According to the stamping equipment according to any one of claims 1 to 30, the abutment structure abuts the workpiece.

32. The production system according to claim 31, wherein: The workpiece is a shell having a receiving cavity and a first wall; The abutment structure includes a protrusion provided on a side of the first component facing the second component. The protrusion is used to be inserted into the accommodating cavity to abut the first wall. The punching head is used to punch a groove on the first wall.

33. The production system according to claim 32, wherein: The housing includes a side wall and the first wall, wherein the side wall is disposed around the first wall, one end of the side wall is connected to the first wall along a first direction, and the other end of the side wall is enclosed to form an opening, and the side wall and the first wall together define the accommodating cavity; The protrusion is used to be inserted into the accommodating cavity from the opening along the first direction to position the housing.

34. The production system according to claim 33, wherein: A gap is set between the side wall and the bump.

35. The production system according to claim 34, wherein: The surface of the first wall facing the accommodating cavity and the surface of the side wall facing the accommodating cavity are connected through an arc surface; Along the first direction, the projection of the arc surface is located in the gap between the side wall and the protrusion.

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