Shell marking device

Abstract

The utility model discloses a kind of shell punching marking device, belong to battery package shell technical field, the shell punching marking device includes: punch, first die plate, second die plate and marker, the first die plate and the second die plate are suitable for moving to the direction close to or away from each other to selectively clamp to be punched shell workpiece, the punch is used to punch the to be punched shell workpiece after being clamped to the to be punched shell workpiece;The marker is used to mark the to be punched shell workpiece after being punched out.The shell punching marking device of the utility model embodiment integrates the shell punching of to be punched shell workpiece and marking in the same device, directly marking after shell punching, high efficiency, make the marking position of multiple to be punched shell workpiece remain fixed, and marking precision is high.

Description

Technical Field

[0001] This utility model relates to the field of battery pack casing technology, and in particular to a casing marking device. Background Technology

[0002] The battery pack casing is the external protective structure of the battery, defined as the outer shell structural component of the battery, which has the functions of physical protection, isolation, heat dissipation and electrical insulation. During the manufacturing process, the aluminum-plastic film can be made into a suitable shape, and the aluminum-plastic film needs to be corrected in the later stage before the electrode core can be inserted into the casing. The correction can rely on a marking device to mark and correct the deviation according to the marking.

[0003] Currently, the aluminum-plastic film is manufactured into specific shapes and the marking positions are designed separately. This results in positioning deviations during subsequent marking, making the process complex and inaccurate. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a punching and marking device, which integrates the punching and marking of the workpiece to be punched into the same device, and performs marking directly after punching, which is highly efficient, keeps the marking position of multiple workpieces to be punched fixed, and has high marking accuracy.

[0005] According to an embodiment of the present invention, a punching and marking device includes: a punch, a first pressing plate, a second pressing plate, and a marking device. The first pressing plate and the second pressing plate are adapted to move toward or away from each other to selectively clamp the workpiece to be punched. The punch is used to punch the workpiece after it is clamped. The marking device is used to mark the punched workpiece.

[0006] According to the embodiment of the present utility model, the punching and marking device integrates the punching of the workpiece to be punched and the marking into the same device. When punching the workpiece, that is, when the workpiece to be punched is formed into the required shape so as to serve as an installation space for accommodating the battery cell, the marking is performed directly after punching. This method is highly efficient and keeps the marking position of multiple workpieces to be punched fixed, resulting in high marking accuracy.

[0007] According to an embodiment of the present invention, the punching and marking device further includes a mounting frame. The mounting frame is provided with a first driving component and a second driving component. The first driving component drives the first pressure plate to move toward the direction close to the second pressure plate to squeeze the workpiece to be punched. The second driving component drives the punch to move to punch the workpiece to be punched.

[0008] According to the punching and marking device of this utility model embodiment, the first pressing plate is provided with a first through hole, and the second pressing plate is provided with a second through hole opposite to the first through hole. When the first pressing plate and the second pressing plate are close to each other and squeeze, the first driving component drives the first pressing plate to move towards the second pressing plate to squeeze the workpiece to be punched. The second driving component drives at least a portion of the punch to pass through the second through hole to punch the workpiece to be punched. The marking device marks the workpiece to be punched at the first through hole.

[0009] According to the punching and marking device of this utility model embodiment, the first pressing plate forms an installation channel at the position of the first through hole, and the punch punches the workpiece to be punched to form a shell groove, the depth of the shell groove being less than the depth of the installation channel.

[0010] According to the punching and marking device of this utility model embodiment, there are at least two second through holes and at least two first through holes, and the punch is provided with two punching structures that cooperate with the two second through holes.

[0011] According to the shell marking device of the present utility model embodiment, the first driving component includes a first driving member, a first lead screw and a first nut column. The first driving member is poweredly connected to the first lead screw. The first nut column is sleeved on the first lead screw and connected to the first pressing platen. The first driving member drives the first lead screw to rotate, thereby driving the first nut column to translate so as to drive the first pressing platen to move toward the direction close to the second pressing platen.

[0012] According to an embodiment of the present utility model, the punching and marking device further includes a connecting plate assembly, which is connected to the first pressing template and the first nut column. The connecting plate assembly is also connected to the first pressing template, and an elastic element is provided between the connecting plate assembly and the first pressing template.

[0013] According to an embodiment of the present invention, the punching and marking device further includes a first guide assembly. The first guide assembly includes a first guide post and a first sleeve. The first guide post is connected to the connecting plate assembly. The first sleeve is disposed outside the first guide post and connected to the mounting frame. When the first nut post drives the connecting plate assembly to move, it drives the first guide post to move axially along the first sleeve.

[0014] According to the punching and marking device of this utility model embodiment, the second driving component includes a second driving member, a second lead screw, and a second nut column. The second driving member is poweredly connected to the second lead screw. The second nut column is sleeved on the second lead screw and connected to the punch. The second driving member drives the second lead screw to rotate, thereby driving the second nut column to translate so as to drive the punch to move toward the direction close to the first pressing platen.

[0015] According to an embodiment of the present invention, the punching and marking device further includes a second guide assembly. The second guide assembly includes a second guide post and a second sleeve. The second guide post is fixedly connected to the mounting frame, and the second sleeve is connected to the punch. The second sleeve is disposed outside the second guide post and movably connected to the mounting frame. When the second nut post drives the punch to move, it drives the second sleeve to move along the axial direction of the second guide post.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the shell marking device according to an embodiment of the present invention; Figure 2 This is a partial schematic diagram of the shell marking device according to an embodiment of the present utility model; Figure 3 This is a top view of the cross-section of the punching and marking device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the upper pressure template, lower pressure template, and marking device according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the workpiece to be punched after marking, according to an embodiment of this utility model; Figure 6 This is a schematic diagram of the battery cell body being placed into the workpiece to be punched according to an embodiment of the present invention.

[0018] Figure label: The punching and marking device 100 includes a mounting frame 1, a connecting plate assembly 11, a lower connecting plate 111, an upper connecting plate 112, an elastic element 113, a third guide assembly 12, a third sleeve 121, a third guide post 122, a vertical support part 13, a horizontal support part 14, a first connecting part 15, a second connecting part 16, a third connecting part 17, a first drive assembly 2, a first drive element 21, a first lead screw 22, a first nut post 23, a marking device 3, a first pressing template 4, a first through hole 41, a second pressing template 5, a second through hole 51, an installation gap 52, a punch 6, a punch mounting plate 61, a punching structure 62, a second drive assembly 7, a second drive element 71, a second lead screw 72, a second nut post 73, a first guide assembly 8, a first sleeve 81, a first guide post 82, a second guide assembly 9, a second sleeve 91, a second guide post 92, a workpiece to be punched 10, a marking code 101, and a battery cell body 20. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0022] The following is for reference. Figures 1-6 The punching and marking device 100 according to an embodiment of the present utility model integrates the punching and marking of the workpiece 10 to be punched into the same device. Marking is performed directly after punching, which is highly efficient and keeps the marking position of multiple workpieces 10 to be punched fixed, resulting in high marking accuracy.

[0023] like Figure 1-6 As shown, a punching and marking device 100 according to an embodiment of the present invention includes: a punch 6, a first pressing plate 4, a second pressing plate 5, and a marking device 3.

[0024] The first pressing plate 4 and the second pressing plate 5 are adapted to move toward or away from each other to selectively clamp the workpiece 10 to be punched; the punch 6 is used to punch the workpiece 10 to be punched after it is clamped; and the marking device 3 is used to mark the punched workpiece 10 to be punched.

[0025] In practice, the workpiece 10 to be punched can be an aluminum-plastic film. For example, the battery cell body 20 needs to be wrapped with a stamped aluminum-plastic film. Specifically, if the aluminum-plastic film is a plate-shaped structure, the plate-shaped aluminum-plastic film can be punched to form a shell groove, and two aluminum-plastic films with shell grooves can be fastened together to form a space for installing the battery cell body 20, so as to facilitate the installation of the battery cell body 20.

[0026] Specifically, in this embodiment of the invention, the second pressing template 5 can be placed above the first pressing template 4, and the first pressing template 4 can be closer to or farther away from the second pressing template 5. In the initial state, there is an installation gap 52 between the first pressing template 4 and the second pressing template 5. The workpiece 10 to be punched is placed in the installation gap 52 between the first pressing template 4 and the second pressing template 5. For example, the workpiece 10 to be punched can be placed above the first pressing template 4. When the first pressing template 4 moves toward the second pressing template 5, the first pressing template 4 moves toward the second pressing template 5 and squeezes the workpiece 10 to be punched, so that the workpiece 10 to be punched keeps its surface flat. Then, by driving the punch 6 to move, the punch 6 punches the workpiece 10 to be punched. The punch 6 is mainly to adapt to the final required structure of the workpiece 10 to be punched. That is to say, different workpieces to be punched require different structures of the punch 6, so that the workpiece 10 to be punched forms the required groove.

[0027] A marking device 3 can also be set at the bottom or top of the workpiece 10 to be punched. The marking device 3 can be a laser marking device 3. The laser marking device 3 is an industrial device that uses a high-energy laser beam to form permanent marks on the surface of various materials. It does not need to contact the workpiece 10 to be punched during marking. Its core principle is to focus the laser beam and irradiate the surface of the object. The high temperature causes the material surface to undergo oxidation, evaporation or melting reaction to form a marking pattern, thereby improving the convenience of marking and not affecting the punching operation of the workpiece 10 to be punched.

[0028] After the shell is punched, the workpiece 10 to be punched is marked. That is, the position of the marking device 3 remains unchanged, so that the marking position of multiple workpieces 10 to be punched is the same, thereby improving the efficiency of punching and marking, and also improving the accuracy of marking.

[0029] In some embodiments, the punching and marking device 100 further includes a mounting frame 1, which is provided with a first driving component 2 and a second driving component 7. The first driving component 2 drives the first pressing plate 4 to move toward the second pressing plate 5 to press the workpiece 10 to be punched, and the second driving component 7 drives the punch 6 to move to punch the workpiece 10 to be punched.

[0030] Reference Figure 1 As shown, the lower part of the mounting frame 1 is connected to the first drive assembly 2, and the upper part is connected to the second drive assembly 7. In the initial state, the first drive assembly 2 and the second drive assembly 7 are not working. The first drive assembly 2 outputs power to the first pressing platen 4, and the second drive assembly 7 outputs power to the punch 6. The second pressing platen 5 is connected to the mounting frame 1 and remains in a fixed position. At this time, the first pressing platen 4 is located below the second pressing platen 5, and the workpiece 10 to be punched is placed in the mounting gap 52 formed between the first pressing platen 4 and the second pressing platen 5. For example, the workpiece 10 to be punched can be extended by unwinding the raw material. The material is inserted into the installation gap 52 between the first pressing template 4 and the second pressing template 5. When the first driving component 2 drives the first pressing template 4 to move towards the second pressing template 5, the material is squeezed and the punch 6 is used to punch the workpiece 10 to be punched. The extrusion and punching of the material after the extrusion ensures the accuracy of the punching. After punching, the material can be marked. At this time, the material can be unwound, so that another area of ​​the material is located in the installation gap 52 between the first pressing template 4 and the second pressing template 5. The punching and marking operations can continue, which makes the whole process more efficient and continuous.

[0031] In other words, after different areas of the raw material are punched and marked, multiple workpieces 10 to be punched are formed. For example, if one workpiece 10 to be punched eventually forms a shell groove, then two workpieces 10 to be punched are fastened together, and the shell grooves of the two workpieces 10 to be punched are fastened together to form a space for installing the battery cell body 20. Of course, a workpiece 10 to be punched can also be placed in the installation gap 52 between the first pressing template 4 and the second pressing template 5, and punched and marked in the same way.

[0032] In some embodiments, the first pressing template 4 is provided with a first through hole 41, and the second pressing template 5 is provided with a second through hole 51 opposite to the first through hole 41. When the first pressing template 4 and the second pressing template 5 are close together and pressed, the first driving component 2 drives the first pressing template 4 to move toward the second pressing template 5 to press the workpiece 10 to be punched. The second driving component 7 drives at least a portion of the punch 6 to pass through the second through hole 51 to punch the workpiece 10 to be punched. The marking device 3 marks the workpiece 10 to be punched at the first through hole 41.

[0033] Combination Figure 1 and Figure 4 As shown, the first pressing template 4 is provided with two first through holes 41 spaced apart in the horizontal direction, and the second pressing template 5 is provided with two second through holes 51 spaced apart in the horizontal direction. The first through holes 41 and the second through holes 51 correspond one to one and face each other. When the first driving assembly 2 drives the first pressing template 4 to move upward to squeeze the workpiece 10 to be punched, the second driving assembly 7 drives the punch 6 to move downward so that at least part of the punch 6 passes through the second through hole 51 to punch the workpiece 10 to be punched. Punching refers to the process of processing the aluminum-plastic film into a specific concave shape, such as a shell, by punching with the punch 6.

[0034] The marking device 3 is installed at the bottom of the first through hole 41, and the head of the marking device 3 can emit a laser. The laser can be emitted from the head and the marking device 3 can be applied to the workpiece 10 to be punched through the first through hole 41. The position of the marking device 3 remains unchanged, that is, the marking position is always maintained at the position where the workpiece 10 to be punched is directly opposite the first through hole 41.

[0035] Additionally, it should be noted that when the first through hole 41 and the second through hole 51 are aligned, and at least a portion of the punch 6 passes through the second through hole 51 to punch the workpiece 10 to be punched, a portion of the workpiece 10 to be punched can be located within the first through hole 41. In other words, the first through hole 41 reserves space for the workpiece 10 to be punched, thereby ensuring that the punching can proceed smoothly.

[0036] In some embodiments, the first pressing plate 4 forms an installation channel at the position of the first through hole 41, and the punch 6 punches the workpiece 10 to be punched to form a shell groove, the depth of which is less than the depth of the installation channel.

[0037] In other words, reserving some space at the mounting channel at the first through hole 41 allows the workpiece 10 to be partially located in the mounting channel formed by the first through hole 41 after being punched. At the same time, some space can be reserved at the bottom of the mounting channel for the head of the marking device 3 to extend into it. That is, the end of the marking device 3 is on the inner wall of the mounting channel away from the second through hole 51. This allows the marking device 3 to accurately and effectively mark the workpiece 10 to be punched, and the marking position can always remain unchanged. This facilitates the subsequent correction of the battery cell according to the marking position, so that the position of the battery cell body 20 installed in the housing can be controlled.

[0038] In some embodiments, there are at least two second through holes 51 and at least two first through holes 41, and the punch 6 is provided with two punch shell structures 62 that cooperate with the two second through holes 51.

[0039] Reference Figure 4 As shown, there are two first through holes 41 and two second through holes 51. The end of the punch 6 facing the second through hole 51 is also provided with two punching shell structures 62. The shape of the punching shell structure 62 is adapted to the shape of the mounting groove to be formed in the workpiece 10 to be punched. For example, when a workpiece 10 to be punched is set at the mounting gap 52 between the first pressing plate 4 and the second pressing plate 5, the two positions of the workpiece 10 to be punched can be punched to form shell grooves. Marking is done at one position of the workpiece 10 to be punched at the position of the first through hole 41. Then, the workpiece 10 to be punched can be cut into two sub-parts, and the shell grooves of the two sub-parts are fastened together to form a space for mounting the battery cell body 20. Especially when the raw material is placed between the first pressing plate 4 and the second pressing plate 5 by unwinding, the design of the two first through holes 41 and the two second through holes 51 can achieve efficient punching and marking.

[0040] In some embodiments, the first drive assembly 2 includes a first drive member 21, a first lead screw 22 and a first nut column 23. The first drive member 21 is powered to the first lead screw 22. The first nut column 23 is sleeved on the first lead screw 22 and connected to the first pressing platen 4. The first drive member 21 drives the first lead screw 22 to rotate, thereby driving the first nut column 23 to translate so as to move the first pressing platen 4 toward the direction of the second pressing platen 5.

[0041] Reference Figure 1As shown, the first driving component 21 is a first motor, and the output end of the first motor is connected to a first lead screw 22, so that the output end of the first motor can rotate to drive the first lead screw 22 to rotate. The output shaft of the first motor and the first lead screw 22 are perpendicular. At this time, conventional power components in the prior art can be used for power transmission, such as a worm gear structure to achieve power transmission. For example, the output end of the first motor transmits power to the worm, and the worm transmits power to the worm wheel. The worm wheel is fixedly connected to the first lead screw 22. The rotation of the worm wheel drives the first lead screw 22 to rotate. The first nut column 23 is sleeved on the first lead screw 22, and the first pressing plate 4 is connected above the first nut column 23. As the first lead screw 22 rotates, it can drive the first nut column 23 to move upward, thereby driving the first pressing plate 4 to move upward so that the first pressing plate 4 and the second pressing plate 5 can squeeze the workpiece 10 to be punched.

[0042] In some embodiments, the punching and marking device 100 further includes a connecting plate assembly 11, which is connected to the first nut post 23 and is also connected to the first pressing template 4. An elastic element 113 is provided between the connecting plate assembly 11 and the first pressing template 4.

[0043] Continue to refer to Figure 1 As shown, the connecting plate assembly 11 includes a lower connecting plate 111 and an upper connecting plate 112. A lower pressing template 4 is connected to the upper connecting plate 112. By setting an elastic element 113 between the upper connecting plate 112 and the lower connecting plate 111, the connecting plate assembly 11 can be kept more stable when the first nut column 23 moves upward. When the lower pressing template 4 and the upper pressing template 5 squeeze the workpiece 10 to be punched, the squeezing is gradual and slow, which improves the uniformity of force. The level of the first pressing template 4 can also be adjusted, thereby ensuring that the workpiece 10 to be punched is subjected to balanced force when squeezed by the first pressing template 4 and the second pressing template 5.

[0044] Furthermore, multiple springs can be installed between the upper connecting plate 112 and the lower connecting plate 111. The multiple springs are evenly distributed at equal distances, which can further ensure the uniformity of the force on the upper connecting plate 112, thereby ensuring the uniformity of the force on the first pressure template 4 connected to the upper connecting plate 112.

[0045] In some embodiments, the punching and marking device 100 further includes a first guide assembly 8, which includes a first guide post 82 and a first sleeve 81. The first guide post 82 is connected to the connecting plate assembly 11, and the first sleeve 81 is disposed outside the first guide post 82 and connected to the mounting frame 1. When the first nut post 23 drives the connecting plate assembly 11 to move, it drives the first guide post 82 to move along the axial direction of the first sleeve 81.

[0046] Reference Figure 1As shown, the first sleeve 81 in the first guide assembly 8 can be connected to the mounting frame 1. The first sleeve 81 can be a linear bearing. For example, the mounting frame 1 includes multiple vertical support parts 13 and horizontal support parts 14. The first sleeve 81 can be fixedly connected to a horizontal support part 14. One end of the first guide post 82 is connected to the lower connecting plate 111 and the bottom of the other end is suspended. That is, when the first nut post 23 drives the lower connecting plate 111, the upper connecting plate 112 and the first pressing plate 4 to move upward, that is, when the first lead screw 22 rotates and drives the first nut post 23 to move upward, the first guide post 82 can drive the lower connecting plate 111 and the upper connecting plate 112 to move upward together, thereby improving the stability of the upward movement of the lower connecting plate 111, the upper connecting plate 112 and the first pressing plate 4, and reducing the offset phenomenon of the lower connecting plate 111 and the upper connecting plate 112.

[0047] Furthermore, multiple first guide components 8 can be configured, with multiple first guide components 8 arranged around the first lead screw 22 and the first nut column 23 and spaced apart, thereby improving the stability of the upper connecting plate 112 and the lower connecting plate 111 moving upward.

[0048] In some embodiments, the second drive assembly 7 includes a second drive member 71, a second lead screw 72, and a second nut column 73. The second drive member 71 is powered to the second lead screw 72. The second nut column 73 is sleeved on the second lead screw 72 and connected to the punch 6. The second drive member 71 drives the second lead screw 72 to rotate, thereby driving the second nut column 73 to translate so as to move the punch 6 toward the direction close to the first pressure plate 4.

[0049] Specifically, the second driving component 71 is a second motor. The output end of the second motor transmits power to the second lead screw 72. When the output shaft of the second motor is perpendicular to the output shaft of the second lead screw 72, a transmission mechanism that can change direction, such as a worm gear assembly, can be provided between the output shaft of the second motor and the second lead screw 72 to realize the transmission of power from the output shaft of the second motor to the second lead screw 72. The rotation of the second lead screw 72 can drive the second nut column 73 to translate. The second nut column 73 is connected to the punch mounting plate 61, and the punch mounting plate 61 is connected to the punch 6. That is, the downward movement of the second nut column 73 drives the punch 6 to move downward. The punch 6 moves downward and contacts the workpiece 10 to be punched, thereby punching the workpiece 10 to be punched to form the required structure.

[0050] In addition, the transmission of the second drive component 7 and the first drive component 2 is achieved by using a lead screw drive, which has high transmission efficiency and high precision.

[0051] In some embodiments, the punching and marking device 100 further includes a second guide assembly 9, which includes a second guide post 92 and a second sleeve 91. The second guide post 92 is fixedly connected to the mounting frame 1, and the second sleeve 91 is disposed outside the second guide post 92 and movably connected to the mounting frame 1. The second sleeve 91 is connected to the punch 6. When the second nut post 73 drives the punch 6 to move, it drives the second sleeve 91 to move along the axial direction of the second guide post 92.

[0052] The second guide assembly 9 includes a second guide post 92 and a second sleeve 91. The second guide post 92 is connected to the mounting frame 1, such as... Figure 1 In the middle, one end of the second guide post 92 is connected to the first connecting part 15 and the other end is connected to the upper horizontal support part 14. The first connecting part 15 and the second connecting part 16 both extend in the horizontal direction, and the second connecting part 16 is directly or indirectly connected to the punch 6. That is, the movement of the punch 6 can drive the movement of the second connecting part 16. The second sleeve 91 is connected to the punch 6. When the second lead screw 72 drives the second nut post 73 to move downward to drive the punch 6 to move downward, the second connecting part 16 can move downward. At this time, the second sleeve 91 can move downward along the second guide post 92, thereby realizing the guiding function and maintaining the stability of the movement of the punch 6.

[0053] It should also be noted that the punching and marking device 100 further includes a third connecting part 17 and a third guide assembly 12. The third connecting part 17 is adapted to be fixedly connected to the mounting frame 1. The third guide assembly 12 includes a third sleeve 121 and a third guide post 122. The third sleeve 121 is fixedly connected to the third connecting part 17, and the third guide post 122 is movably connected to the third sleeve 121. The other end of the third guide post 122 is connected to the first pressing template 4, so that when the first pressing template 4 moves upward under the drive of the first driving assembly 2, it can squeeze the workpiece 10 to be punched, and maintain the movement stability between the first pressing template 4 and the second pressing template 5.

[0054] In other words, this utility model embodiment marks the shell with special marking points by the smooth and flat shape of the aluminum-plastic film during the stamping process. In this state, the positional accuracy of repeated marking is high and the marking quality is higher. Then, by identifying the marking code 101 on the battery cell for correction and positioning, it can solve the problem of product abnormalities in subsequent work stations caused by the material loading position deviation of soft-pack batteries in the actual production process.

[0055] During the aluminum-plastic film punching process, the marking device 3 marks the aluminum-plastic film when the punch 6 reaches its lowest position. In this state, the aluminum-plastic film is smooth and flat, and there are no positioning and handling errors introduced by subsequent marking stations. The marking accuracy is the highest and the consistency is the best. Moreover, this marking code 101 is applicable to the positioning of the entire cell process segment. The positioning benchmark is unified and the positioning error is small. Compared with other station visual correction technologies, it improves the overall positioning consistency and positioning accuracy. Positioning by the shell marking code 101 during punching and the existing visual guidance positioning by recognizing the shape features of soft-pack cells eliminate the dimensional deviation of the shape features in the cell manufacturing process, resulting in accurate positioning.

[0056] Furthermore, after the aluminum-plastic film is punched and marked, its shape and marking position can be used for later positioning, installation of the annular electrode core, encapsulation of the electrode core, and relevant folding to ensure sealing and fix the cell shape. Visual correction mainly relies on the shape and marking to correct deviations. The purpose of correction is to ensure that the overlap of the folded edges is consistent after the cell body 20 is installed inside the aluminum-plastic film, thereby ensuring the sealing of the connection and the consistency of the overall cell size. Moreover, the aluminum-plastic film after punching is... Figure 5 As shown, the battery cell is formed by placing the battery cell body 20 inside the aluminum-plastic film after the casing is punched.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A punching and marking device (100), characterized in that, include: The punch (6), the first pressing plate (4), and the second pressing plate (5) are adapted to move toward or away from each other to selectively clamp the workpiece (10) to be punched. The punch (6) is used to punch the workpiece (10) to be punched after it is clamped. Marker (3), the marking device (3) is used to mark the stamped shell workpiece (10).

2. The punching and marking device (100) according to claim 1, characterized in that, It also includes an installation frame (1), which is provided with a first drive assembly (2) and a second drive assembly (7). The first drive assembly (2) drives the first pressure plate (4) to move toward the second pressure plate (5) to squeeze the workpiece to be punched (10), and the second drive assembly (7) drives the punch (6) to move to punch the workpiece to be punched (10).

3. The punching and marking device (100) according to claim 2, characterized in that, The first pressing template (4) is provided with a first through hole (41), and the second pressing template (5) is provided with a second through hole (51) opposite to the first through hole (41). When the first pressing template (4) and the second pressing template (5) are close together and squeezed, the first driving component (2) drives the first pressing template (4) to move toward the second pressing template (5) to squeeze the workpiece (10) to be punched. The second driving component (7) drives at least part of the punch (6) to pass through the second through hole (51) to punch the workpiece (10) to be punched. The marking device (3) marks the workpiece (10) to be punched at the first through hole (41).

4. The punching and marking device (100) according to claim 3, characterized in that, The first pressing template (4) forms an installation channel at the position of the first through hole (41), and the punch (6) punches the workpiece (10) to form a shell groove, the depth of which is less than the depth of the installation channel.

5. The punching and marking device (100) according to claim 4, characterized in that, There are at least two of the second through hole (51) and the first through hole (41), and the punch (6) is provided with two punch shell structures (62) that cooperate with the two second through holes (51).

6. The punching and marking device (100) according to claim 2, characterized in that, The first drive assembly (2) includes a first drive member (21), a first lead screw (22) and a first nut column (23). The first drive member (21) is powered to the first lead screw (22). The first nut column (23) is sleeved on the first lead screw (22) and connected to the first pressing platen (4). The first drive member (21) drives the first lead screw (22) to rotate, thereby driving the first nut column (23) to translate so as to move the first pressing platen (4) toward the direction of the second pressing platen (5).

7. The punching and marking device (100) according to claim 6, characterized in that, It also includes a connecting plate assembly (11), which is connected to the first nut post (23) and is also connected to the first pressure plate (4). An elastic element (113) is provided between the connecting plate assembly (11) and the first pressure plate (4).

8. The punching and marking device (100) according to claim 7, characterized in that, It also includes a first guide assembly (8), which includes a first guide post (82) and a first sleeve (81). The first guide post (82) is connected to the connecting plate assembly (11), and the first sleeve (81) is located outside the first guide post (82) and connected to the mounting frame (1). When the first nut post (23) drives the connecting plate assembly (11) to move, it drives the first guide post (82) to move axially along the first sleeve (81).

9. The punching and marking device (100) according to claim 2, characterized in that, The second drive assembly (7) includes a second drive member (71), a second lead screw (72), and a second nut column (73). The second drive member (71) is powered to the second lead screw (72). The second nut column (73) is sleeved on the second lead screw (72) and connected to the punch (6). The second drive member (71) drives the second lead screw (72) to rotate, thereby driving the second nut column (73) to translate so that the punch (6) moves toward the direction close to the first pressure plate (4).

10. The punching and marking device (100) according to claim 9, characterized in that, It also includes a second guide assembly (9), which includes a second guide post (92) and a second sleeve (91). The second guide post (92) is fixedly connected to the mounting frame (1). The second sleeve (91) is located outside the second guide post (92) and is movably connected to the mounting frame (1). The second sleeve (91) is connected to the punch (6). When the second nut post (73) drives the punch (6) to move, it drives the second sleeve (91) to move along the axial direction of the second guide post (92).

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