A battery pole piece connecting belt device and a winding and changing device

Abstract

This utility model discloses a battery electrode splicing device and a winding and changing device, comprising: a moving mechanism with a swing arm rotatably mounted thereon; the swing arm having multiple pressure rollers circumferentially distributed around a first axis, forming an accommodating space between all the pressure rollers; a cutter movably mounted within the accommodating space on the swing arm; and the cutter being connected to a driver. The moving mechanism and the swing arm move such that one of the pressure rollers presses the battery electrode against the splicing station of an unloaded winding spool. The battery electrodes on both sides of the splicing station pass around at least one pressure roller and are under tension. The driver can drive the cutter to extend or retract along the area between two pressure rollers. During the movement of the moving mechanism and the swing arm, the driver drives the cutter to retract into the accommodating space, eliminating the need for complex mechanisms to avoid pressure rollers on the outer periphery, thus improving the splicing and changing speed and simplifying the structure of the splicing device.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to a battery electrode splicing device and a winding and changing equipment. Background Technology

[0002] With the continued surge in demand for energy storage batteries, the pressure to deliver battery production capacity is constantly increasing. The winding of battery electrodes is a crucial step in battery production, and its winding efficiency has become one of the bottlenecks restricting the release of overall production capacity.

[0003] A typical winding and changing system includes two winding drums arranged at intervals on the left and right. When one winding drum winds the battery electrode sheet to a full roll, a swing arm mechanism is usually used to pull the battery electrode sheet from one side of the full-roll winding drum to the other side of the unloaded winding drum. The battery electrode sheet is then bonded to the pre-set double-sided adhesive on the winding drum using a tape attaching assembly. Finally, a cutter assembly is used to cut the battery electrode sheet between the full-roll winding drum and the tape attaching station.

[0004] In cases where both the cutting assembly and the tape-joining assembly are located within the swing arm mechanism, the cutting assembly also requires an adjustment mechanism to adjust its position relative to the tape-joining assembly. This allows it to avoid the tape-joining assembly before and after the tape-joining operation, and also enables reversing the cutting of battery electrodes when the other winding drum is fully wound. However, the adjustment mechanism needs to drive the cutting assembly to move circumferentially along the tape-joining assembly, resulting in a complex structure for the adjustment mechanism. This leads to a large number of parts and a complex structure on the swing arm mechanism, placing a significant load on it. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of this utility model is to provide a battery electrode splicing device with a simple structure and low load on the swing arm, which eliminates the need to adjust the position of the cutter to avoid the splicing assembly, thereby improving splicing and rewinding efficiency; another objective is to provide a rewinding and rewinding device that uses this battery electrode splicing device.

[0006] A battery electrode attaching device according to a first aspect of the present invention includes: a moving mechanism, a swing arm rotatably mounted on the moving mechanism, a plurality of pressure rollers circumferentially distributed around a first axis on the swing arm, all the pressure rollers forming an accommodating space, a cutter movably mounted on the swing arm within the accommodating space, the cutter being connected to a driver, the driver being able to drive the cutter to extend or retract along the area between two of the pressure rollers; wherein, the moving mechanism and the swing arm move such that one of the pressure rollers presses the battery electrode against the attaching station of an unloaded winding drum, and the battery electrodes on both sides of the attaching station are wound around at least one of the pressure rollers and the battery electrodes facing the cutter are in a tensioned state.

[0007] The battery electrode attaching device according to the first aspect embodiment of the present invention has at least the following beneficial effects: When one of the take-up reels reaches full capacity, the swing arm rotates to drive the pressure rollers against the battery electrode sheets. Combined with the movement of the moving mechanism, this pulls the battery electrode sheets to the splicing station. One pressure roller presses the battery electrode sheet against the pre-set double-sided tape on the unloaded take-up reel. At this time, the battery electrode sheets on both sides of this pressure roller pass around at least one other pressure roller, putting the battery electrode sheets on both sides of the splicing station under tension. The driver then drives the cutter to extend along the area between the two pressure rollers on one side of the splicing station, thereby cutting the battery electrode sheet. During the movement of the moving mechanism and the swing arm, the battery electrode sheets can smoothly contact one or more pressure rollers at different positions, allowing for smooth traction. The driver then drives the cutter to retract into the accommodating space, eliminating the need for complex mechanisms to avoid pressure rollers on the outer periphery. This helps improve the splicing and rewinding speeds, simplifies the structure of the splicing device, and reduces the load on the swing arm. In addition, when the diameter of the pressure roller is small, the arrangement of multiple pressure rollers can also increase the wrap angle of the battery electrode, so as to cut the battery electrode near the tape splicing station and avoid the battery electrode ends not being fully bonded to the double-sided tape.

[0008] In some embodiments of this utility model, a strip channel communicating with the accommodating space is formed between two adjacent pressure rollers, the cutter extends along the length direction of the strip channel, and the driver drives the cutter to extend along the strip channel to cut the battery electrode sheet.

[0009] In some embodiments of this utility model, the swing arm is provided with a central rod parallel to its rotation axis, and the two ends of the central rod are respectively provided with a first end plate and a second end plate. The length direction of the cutter is parallel to the central rod. The driver includes two cylinders fixedly installed on the central rod and connected to the two ends of the cutter. The two ends of the pressure roller are respectively connected to the outer peripheral edge of the first end plate and the outer peripheral edge of the second end plate, so that all the pressure rollers surround the outer periphery of the central rod.

[0010] In some embodiments of this utility model, the first end plate and / or the second end plate are provided with an adjustment groove with an outward opening, and the end of the pressure roller is provided with an adjustment block that can be displaced along the width and height directions of the adjustment groove. A displacement adjustment component for adjusting the relative position of the adjustment block in the adjustment groove is provided between the adjustment block and the adjustment groove.

[0011] In some embodiments of this utility model, the displacement adjustment assembly includes a first fastening screw passing through the height direction of the adjustment block, a first threaded push rod threadedly connected along the height direction of the adjustment block, a second fastening screw passing through the width direction of the adjustment block, and a second threaded push rod threadedly connected along the width direction of the adjustment block. The bottom of the adjustment groove is provided with a first threaded hole that mates with the first fastening screw, and the side wall of the adjustment groove is provided with a second threaded hole that mates with the second fastening screw. When the first threaded push rod rotates, it abuts against the bottom wall of the adjustment groove, driving the adjustment block to move along the height direction of the adjustment groove. The first fastening screw is tightened in the first threaded hole to lock the position of the adjustment block relative to the height direction of the adjustment groove. When the second threaded push rod rotates, it abuts against the side wall of the adjustment groove, driving the adjustment block to move along the width direction of the adjustment groove. The second fastening screw is tightened in the second threaded hole to lock the position of the adjustment block relative to the width direction of the adjustment groove.

[0012] In some embodiments of this utility model, the central rod is provided with a mounting groove that is aligned with the blade direction of the cutter, the cylinder is at least partially fixed in the mounting groove, the cutter is connected to a blade holder, and a telescopic guide assembly is provided between the blade holder and the mounting groove.

[0013] In some embodiments of this utility model, the blade holder has a guide member that is movably inserted through the mounting groove, and the telescopic guide assembly includes an elongated guide hole disposed on the guide member and extending along the telescopic direction of the cutter, and a guide post disposed within the mounting groove and inserted through the elongated guide hole.

[0014] In some embodiments of this utility model, a strip-shaped protective plate for shielding the strip-shaped channel is connected between the first end plate and the second end plate, and the strip-shaped protective plate has a through-hole groove that matches the thickness of the cutter.

[0015] In some embodiments of this utility model, the number of pressure rollers is four, and the angle between the central axis of two adjacent pressure rollers and the first axis is 90°.

[0016] A winding and changing device according to a second aspect of the present invention includes a battery electrode splicing device according to any of the above-described technical solutions. The above winding and changing device eliminates the need for a complex mechanism to drive the cutter to avoid contact with the pressure roller, thus improving the splicing and changing speed, simplifying the structure of the splicing device, and reducing the load on the swing arm.

[0017] 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

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of one embodiment of the battery electrode attaching device of this utility model; Figure 2 for Figure 1 A schematic diagram of the structure after removing the swing arm, the moving mechanism, and part of the pressure roller in the embodiment; Figure 3 A schematic diagram showing the structure in which one end of the pressure roller is mounted on the second end plate; Figure 4 for Figure 3 A partially enlarged schematic diagram of part A; Figure 5 This is a schematic diagram of the structure of one embodiment of the winding and changing equipment of this utility model; Figure 6 This diagram illustrates the process of a battery electrode rewinding and changing system bringing a fully loaded battery electrode against an unloaded rewinding drum.

[0019] Icon labels: Moving mechanism 100; X-axis linear module 110; Y-axis linear module 120; swing arm 200; pressure roller 300; strip channel 301; adjusting block 302; first pressure roller 310; second pressure roller 320; third pressure roller 330; fourth pressure roller 340; cutter 400; knife holder 410; driver 500; center rod 600; first end plate 610; second end plate 620; mounting groove 630; strip protective plate 640; through hole knife groove 641; adjusting groove 700; first fastening screw 810; first threaded push rod 820; second fastening screw 830; second threaded push rod 840; telescopic guide assembly 900; long guide hole 910; guide post 920. Detailed Implementation

[0020] 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.

[0021] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] See Figures 1 to 3This utility model discloses a battery electrode attaching device, comprising: a moving mechanism 100, a swing arm 200 rotatably mounted on the moving mechanism 100, a plurality of pressure rollers 300 circumferentially distributed around a first axis on the swing arm 200, all the pressure rollers 300 forming an accommodating space, a cutter 400 movably mounted on the swing arm 200 and located within the accommodating space, the cutter 400 being connected to a driver 500, the driver 500 being able to drive the cutter 400 to extend or retract along the area between two of the pressure rollers 300; wherein, the moving mechanism 100 and the swing arm 200 move so that one of the pressure rollers 300 presses the battery electrode against the attaching station of the unloaded winding drum 10, the battery electrodes located on both sides of the attaching station are wound around at least one pressure roller 300 and the battery electrodes facing the cutter 400 are in a tensioned state.

[0025] See Figure 5 and Figure 6 When one of its winding drums 10 reaches full winding, the swing arm 200 rotates to drive the pressure roller 300 to abut against the battery electrode. In conjunction with the movement of the moving mechanism 100, the battery electrode is pulled to the tape-joining station. One of the pressure rollers 300 abuts the battery electrode against the preset double-sided tape of the unloaded winding drum 10. At this time, the battery electrodes on both sides of the pressure roller 300 are wrapped around at least one other pressure roller 300, so that the battery electrodes on both sides of the tape-joining station are in a tensioned state. The driver 500 drives the cutter 400 to extend along the area between the two pressure rollers 300 on one side of the tape-joining station, thereby cutting the battery electrode, which is beneficial to a flat cut. During the movement of the moving mechanism 100 and the swing arm 200, the battery electrode can come into contact with one or more pressure rollers 300 at different positions and smoothly pull the battery electrode. The driver 500 drives the cutter 400 to retract into the accommodating space. The cutter 400 does not need to use a complex mechanism to avoid the pressure rollers 300, thereby reducing the steps during the tape splicing operation, which helps to improve the speed of tape splicing and roll changing, and also helps to simplify the structure of the tape splicing device and reduce the load on the swing arm 200.

[0026] It should be noted that the direction of the first axis is usually parallel to the axial direction of the winding drum 10. When the moving mechanism 100 and the swing arm 200 work together to make one of the pressure rollers 300 press the battery electrode against the outer peripheral wall of the unloaded winding drum 10, the pressure roller 300 can be parallel to the outer peripheral wall of the winding drum 10 along the length direction of the winding drum 10, so that the battery electrode and the outer peripheral wall of the winding drum 10 form a line contact.

[0027] In addition, when the diameter of the pressure roller 300 is small, the arrangement of multiple pressure rollers 300 can also increase the wrap angle of the battery electrode sheet around the splicing device, so as to cut the battery electrode sheet near the splicing station, reduce waste, and avoid the battery electrode sheet ends not being fully bonded to the double-sided tape.

[0028] See Figure 1 , Figure 5 and Figure 6 In some embodiments of this utility model, there are four pressure rollers 300. The angle between the central axis of two adjacent pressure rollers 300 and the first axis is 90°. That is, the four pressure rollers 300 are evenly distributed around the first axis. When one of the pressure rollers 300 presses the battery electrode against the double-sided tape preset on the unloaded take-up drum 10, the position where the battery electrode contacts the take-up drum 10 is the tape-connecting station. The battery electrode also presses against two pressure rollers 300 located on the upper and lower sides of the tape-connecting station. At this time, the battery electrode forms a 90° opening angle near the tape-connecting station. The battery electrodes located on the upper and lower sides of the tape-connecting station are both in a tensioned state, which is beneficial for providing a regular accommodating space for the cutter 400 and the driver 500, and also beneficial for the cutter 400 to form a flat cut on the battery electrode when it extends.

[0029] It should be noted that in traditional electrode splicing devices, there is only one pressure roller 300. The diameter of the pressure roller 300 is relatively large to create a large opening angle when the battery electrode sheet abuts against the splicing station. Moreover, a flipping mechanism is required to pre-flip the cutter 400 to the outer periphery of the pressure roller 300 to avoid it and prepare for cutting. The battery electrode splicing device of any of the above technical solutions solves the above problems by using multiple pressure rollers 300 to form an accommodating space and movably positioning the cutter 400 within the accommodating space, which is very ingenious. Of course, in other embodiments, the number of pressure rollers 300 can also be five, six, etc.

[0030] For ease of understanding, see Figure 6The four pressure rollers 300 are labeled as first pressure roller 310, second pressure roller 320, third pressure roller 330, and fourth pressure roller 340 arranged in a clockwise direction. Taking the left winding drum 10 as empty and the right winding drum 10 as close to or fully wound as an example, the figure shows four states in which the battery electrode sheet is pulled from the fully wound winding drum 10 to the empty winding drum 10. In state one, the second pressure roller 320 and the third pressure roller 330 are close to the battery electrode sheet. When the swing arm 200 rotates counterclockwise to state two, the third pressure roller 330 first... When the battery electrode is contacted, the third pressure roller 330 and the fourth pressure roller 340 simultaneously contact the battery electrode. When the swing arm 200 rotates counterclockwise to state three, the third pressure roller 330 separates from the battery electrode. At this time, the fourth pressure roller 340 and the first pressure roller 310 simultaneously contact the battery electrode. Finally, when the swing arm 200 rotates counterclockwise and the moving mechanism 100 moves to the left to state four, the fourth pressure roller 340 presses the battery electrode against the outer peripheral wall of the unloaded winding drum 10. The battery electrode also passes around the first pressure roller 310 and the third pressure roller 330.

[0031] See Figure 1 In some embodiments of this invention, a strip-shaped channel 301 communicating with the accommodating space is formed between two adjacent pressure rollers 300. A cutter 400 extends along the length of the strip-shaped channel 301, and a driver 500 drives the cutter 400 to extend along the strip-shaped channel 301 to cut the battery electrode. It is understood that the length of the cutter 400 is slightly larger than the width of the battery electrode. When the driver 500 drives the cutter 400 to extend into the accommodating space towards the strip-shaped channel 301, the battery electrode can be directly cut, which improves cutting efficiency. Of course, it is conceivable that in other embodiments, when the length of the cutter 400 is smaller than the width of the battery electrode, the driver 500 first causes the cutter 400 to extend along the strip-shaped channel 301, and then drives the cutter 400 to move along the width of the battery electrode.

[0032] See Figure 1 and Figure 2In some embodiments of this utility model, the swing arm 200 is provided with a central rod 600 parallel to its rotation axis. The two ends of the central rod 600 are respectively provided with a first end plate 610 and a second end plate 620. The length direction of the cutter 400 is parallel to the central rod 600. The driver 500 includes two cylinders fixedly installed on the central rod 600 and connected to the two ends of the cutter 400. The two ends of the pressure rollers 300 are respectively connected to the outer peripheral edges of the first end plate 610 and the second end plate 620, so that all the pressure rollers 300 surround the outer periphery of the central rod 600. It can be understood that both ends of all the pressure rollers 300 are connected and fixed between the first end plate 610 and the second end plate 620 and surround the outer periphery of the central rod 600 to form a ring, which both encloses the accommodating space and forms a closed frame structure, making the pressure rollers 300 less prone to bending and deformation. The center rod 600 not only provides a location for the cylinder installation, but also improves the overall mechanical strength of the center rod 600, the first end plate 610, the second end plate 620, and all the pressure rollers 300, further preventing the pressure rollers 300 from twisting. The central axis of the center rod 600 is the aforementioned first axis.

[0033] See Figure 3 and Figure 4 In some embodiments of this utility model, the first end plate 610 and / or the second end plate 620 are provided with an outwardly opening adjustment groove 700, and the end of the pressure roller 300 is provided with an adjustment block 302 that can be displaced along the width and height directions of the adjustment groove 700. A displacement adjustment component for adjusting the relative position of the adjustment block 302 within the adjustment groove 700 is provided between the adjustment block 302 and the adjustment groove 700. It should be noted that when the pressure roller 300 presses the battery electrode against the outer peripheral wall of the unloaded take-up drum 10, if the axial direction of the pressure roller 300 is not parallel to the axial direction of the take-up drum 10, the battery electrode cannot form line contact with the pre-set double-sided adhesive tape on the take-up drum 10, thus making it impossible to smoothly paste the cut end of the battery electrode onto the take-up drum 10. At this time, the relative positions of the two ends of the pressure roller 300 in the height and width directions of the adjustment groove 700 can be adjusted by using the displacement adjustment component, so that the axial direction of the pressure roller 300 can be adjusted to be parallel to the axial direction of the winding cylinder 10.

[0034] See Figure 4In some embodiments of this utility model, the displacement adjustment assembly includes a first fastening screw 810 passing through the height direction of the adjustment block 302, a first threaded push rod 820 threadedly connected along the height direction of the adjustment block 302, a second fastening screw 830 passing through the width direction of the adjustment block 302, and a second threaded push rod 840 threadedly connected along the width direction of the adjustment block 302. The bottom of the adjustment groove 700 is provided with a first threaded hole that mates with the first fastening screw 810, and the sidewall of the adjustment groove 700 is provided with a second threaded hole that mates with the second fastening screw 830. When the first threaded push rod 820 rotates, it abuts against the bottom wall of the adjusting groove 700, driving the adjusting block 302 to move along the height direction of the adjusting groove 700. The first fastening screw 810 is tightened in the first threaded hole to lock the position of the adjusting block 302 relative to the height direction of the adjusting groove 700. When the second threaded push rod 840 rotates, it abuts against the side wall of the adjusting groove 700, driving the adjusting block 302 to move along the width direction of the adjusting groove 700. The second fastening screw 830 is tightened in the second threaded hole to lock the position of the adjusting block 302 relative to the width direction of the adjusting groove 700. Understandably, when it is necessary to adjust the pressure roller 300 to form a line contact with the outer peripheral wall of the winding cylinder 10 indirectly through the battery electrode, loosen the first fastening screw 810 and the second fastening screw 830, so that the adjusting block 302 has room to move in the height and width directions of the adjusting groove 700. Then, rotate the first threaded push rod 820 and the second threaded push rod 840 respectively, and the adjusting block 302 can generate displacement adjustment in the height and width directions of the adjusting groove 700. After adjustment, tighten the first fastening screw 810 and the second fastening screw 830. It should be noted that the first threaded push rod 820 and the second threaded push rod 840 can only rotate relative to the adjusting groove 700. Under the limiting action of the adjusting groove 700, the adjusting block 302 cannot rotate around the first threaded push rod 820 or the second threaded push rod 840, which is equivalent to forming two sets of screw mechanisms to achieve the feeding motion.

[0035] See Figure 2 and Figure 3In some embodiments of this utility model, a central rod 600 is provided with a mounting groove 630 aligned with the blade orientation of the cutter 400. A cylinder is at least partially fixed in the mounting groove 630. The cutter 400 is connected to a blade holder 410, and a telescopic guide assembly 900 is provided between the blade holder 410 and the mounting groove 630. It is understood that the radial dimension of the accommodating space enclosed by multiple pressure rollers 300 is relatively small. With the central rod 600 provided, the mounting groove 630 and the cylinder's mounting position facilitate full utilization of the accommodating space along the direction of the cutter 400's extension, reducing the manufacturing and assembly difficulty of the connecting device. The telescopic guide assembly 900 guides the telescopic movement of the cutter 400, facilitating the smooth cutting of the battery electrode sheets by the cutter 400.

[0036] See Figure 3 In this embodiment, the blade holder 410 has a guide member that movably passes through the mounting groove 630. The telescopic guide assembly 900 includes an elongated guide hole 910 disposed on the guide member and extending along the telescopic direction of the cutter 400, and a guide post 920 disposed within the mounting groove 630 and passing through the elongated guide hole 910. The telescopic guide assembly 900 with the above structure also makes full use of the radial position of the accommodating space, improving the structural compactness of the tape-connecting device while satisfying the sliding guide function.

[0037] See Figure 1 In some embodiments of this utility model, a strip-shaped protective plate 640 for shielding the strip-shaped channel 301 is connected between the first end plate 610 and the second end plate 620. The strip-shaped protective plate 640 has a through-hole groove 641 that matches the thickness of the cutter 400. It is understood that when a worker accidentally puts their hand or fingers into the strip-shaped channel 301 directly opposite the blade of the cutter 400, the cutter 400 can easily cut the hand or fingers, causing a safety accident. The strip-shaped protective plate 640 solves this problem, allowing the cutter 400 to pass through the through-hole groove 641 when cutting battery electrodes without affecting normal cutting work.

[0038] See Figure 1 and Figure 5In some embodiments of this utility model, the moving mechanism 100 includes an X-axis linear module 110 arranged along the left-right direction and a Y-axis linear module 120 disposed at the output end of the X-axis linear module 110. A swing arm 200 is rotatably disposed on the Y-axis linear module 120, and the first axis and the pressure roller 300 are parallel to the movement direction of the Y-axis linear module 120. It should be noted that the X-axis linear module 110 is used to translate the attaching device to pull the battery electrode sheet on the fully wound take-up drum 10 to the attaching station of the unloaded take-up drum 10. After the battery electrode sheet has been attached and cut, the X-axis linear module 110 and the swing arm 200 move to drive the attaching device to separate from the battery electrode sheet. Then, the Y-axis linear module 120 drives the attaching device to move to the outside of the width direction of the battery electrode sheet, and the swing arm 200 drives the attaching device to swing... When the battery electrode is moved to the position between the battery electrode and the unloaded take-up drum 10, the Y-axis linear module 120 drives the tape-connecting device to move until the pressure roller 300 overlaps with the battery electrode in the width direction. When the unloaded take-up drum 10 winds the battery electrode to a full roll, the battery electrode on the full roll of the take-up drum 10 can be pulled to the unloaded take-up drum 10 on the other side by the cooperation of the X-axis linear module 110 and the swing arm 200, thereby realizing the function of reversing tape connection.

[0039] See Figure 5 and Figure 6 This utility model also discloses a winding and changing device, including a battery electrode attaching device according to any of the above-mentioned technical solutions. Specifically, the winding and changing device includes two winding drums 10 spaced apart to the left and right, a moving mechanism 100 between the two winding drums 10, and a swing arm 200 rotatably mounted on the moving mechanism 100. The battery electrode attaching device is mounted on the swing arm 200. This winding and changing device eliminates the need for a complex mechanism to drive the cutter 400 to avoid the pressure roller 300, which helps to improve the attaching and changing speed, simplifies the structure of the attaching device, and reduces the load on the swing arm 200. Figure 5 The dotted line in the diagram represents the path of the battery electrode against the double-sided tape of the unloaded take-up spool 10.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] 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 battery electrode attaching device, characterized in that, include: A moving mechanism (100) is rotatably mounted with a swing arm (200). The swing arm (200) has multiple pressure rollers (300) circumferentially distributed around a first axis, forming an accommodating space. A cutter (400) is movably mounted on the swing arm (200) within the accommodating space. The cutter (400) is connected to a driver (500), which is capable of driving... The cutter (400) extends or retracts along the area between two of the pressure rollers (300); wherein the moving mechanism (100) and the swing arm (200) move such that one of the pressure rollers (300) presses the battery electrode against the unloaded take-up spool (10) at the take-up station, and the battery electrodes on both sides of the take-up station are wound around at least one of the pressure rollers (300) and the battery electrodes facing the cutter (400) are in a taut state.

2. The battery electrode attaching device according to claim 1, characterized in that: A strip channel (301) communicating with the accommodating space is formed between two adjacent pressure rollers (300). The cutter (400) extends along the length direction of the strip channel (301). The driver (500) drives the cutter (400) to extend along the strip channel (301) to cut the battery electrode.

3. The battery electrode attaching device according to claim 2, characterized in that: The swing arm (200) is provided with a central rod (600) parallel to its rotation axis. The two ends of the central rod (600) are respectively provided with a first end plate (610) and a second end plate (620). The length direction of the cutter (400) is parallel to the central rod (600). The driver (500) includes two cylinders fixedly installed on the central rod (600) and connected to the two ends of the cutter (400). The two ends of the pressure roller (300) are respectively connected to the outer peripheral edge of the first end plate (610) and the outer peripheral edge of the second end plate (620) so that all the pressure rollers (300) surround the outer periphery of the central rod (600).

4. The battery electrode attaching device according to claim 3, characterized in that: The first end plate (610) and / or the second end plate (620) are provided with an outward-facing adjustment groove (700). The end of the pressure roller (300) is provided with an adjustment block (302) that can be displaced along the width and height directions of the adjustment groove (700). A displacement adjustment component is provided between the adjustment block (302) and the adjustment groove (700) for adjusting the relative position of the adjustment block (302) within the adjustment groove (700).

5. The battery electrode attaching device according to claim 4, characterized in that: The displacement adjustment assembly includes a first fastening screw (810) passing through the height direction of the adjustment block (302), a first threaded push rod (820) threadedly connected along the height direction of the adjustment block (302), a second fastening screw (830) passing through the width direction of the adjustment block (302), and a second threaded push rod (840) threadedly connected along the width direction of the adjustment block (302). The bottom of the adjustment groove (700) is provided with a first threaded hole that mates with the first fastening screw (810), and the sidewall of the adjustment groove (700) is provided with a second threaded hole that mates with the second fastening screw (830). The first threaded push rod (820) rotates... When the second threaded rod (840) rotates, it abuts against the bottom wall of the adjusting groove (700), causing the adjusting block (302) to move along the height direction of the adjusting groove (700). The first fastening screw (810) is tightened in the first threaded hole to lock the position of the adjusting block (302) relative to the height direction of the adjusting groove (700). When the second threaded rod (840) rotates, it abuts against the side wall of the adjusting groove (700), causing the adjusting block (302) to move along the width direction of the adjusting groove (700). The second fastening screw (830) is tightened in the second threaded hole to lock the position of the adjusting block (302) relative to the width direction of the adjusting groove (700).

6. The battery electrode attaching device according to claim 3, characterized in that: The central rod (600) is provided with a mounting groove (630) that is aligned with the blade direction of the cutter (400). The cylinder is at least partially fixed in the mounting groove (630). The cutter (400) is connected to a blade holder (410). A telescopic guide assembly (900) is provided between the blade holder (410) and the mounting groove (630).

7. The battery electrode attaching device according to claim 6, characterized in that: The blade holder (410) has a guide member that is movably inserted through the mounting groove (630). The telescopic guide assembly (900) includes an elongated guide hole (910) provided on the guide member and extending along the telescopic direction of the cutter (400) and a guide post (920) provided in the mounting groove (630) and inserted through the elongated guide hole (910).

8. The battery electrode attaching device according to claim 3, characterized in that: A strip protective plate (640) for shielding the strip channel (301) is connected between the first end plate (610) and the second end plate (620). The strip protective plate (640) has a through-hole groove (641) that matches the thickness of the cutter (400).

9. The battery electrode attaching device according to claim 1, characterized in that: The number of pressure rollers (300) is four, and the angle between the central axis of two adjacent pressure rollers (300) and the first axis is 90°.

10. A winding and changing device, characterized in that, Includes a battery electrode attaching device according to any one of claims 1-9.

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