A threading device and a method of threading using the threading device

Abstract

The embodiment of the present application provides a threading device and a method for threading by using the threading device, which comprises a sliding track arranged along a conveying path of a belt, a sliding rod device detachably connected to the sliding track, and a traction body capable of sliding along the sliding track. The threading device can be used to thread the belt after the belt is broken.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing, and in particular to a threading device and a method for connecting wires using the threading device. Background Technology

[0002] The battery manufacturing process can include electrode manufacturing process; in the electrode manufacturing process, the strip needs to be transferred from the unwinding device to the winding device. During the transfer process, the strip may break, and the strip needs to be spliced.

[0003] Typically, devices for splicing battery strips use chains, wire ropes, belts, timing belts, etc., which are complex in structure and expensive. Therefore, there is an urgent need to improve the efficiency of battery production. Summary of the Invention

[0004] This application provides a threading device and a method for splicing batteries using the threading device. The threading device has a simple structure, low cost, and is easy to use for splicing batteries, which can improve the efficiency of battery production.

[0005] In a first aspect, a belt threading device is provided, comprising: a sliding track arranged along the conveying path of the belt; a slide bar device detachably connected to the sliding track; and a traction body capable of sliding along the sliding track.

[0006] In this application's technical solution, a sliding track is set along the strip's conveying path, a sliding rod device is detachably connected to the sliding track, and a traction body is provided that can slide along the sliding track. This allows for strip splicing when the strip breaks. The sliding track is integrated into the strip's conveying path, and the sliding rod device can be detachably connected to any position on the sliding track, enabling splicing at any time. The structure is simple, operation is convenient, and it can improve the production efficiency of electrode sheets, further enhancing the production efficiency of batteries.

[0007] In some possible implementations, the sliding track includes a first track and a second track arranged opposite to each other.

[0008] The above-described embodiment defines the conveying direction of the strip by setting a sliding track including a first track and a second track arranged opposite to each other. The overall structure is symmetrical, and the strip is subjected to uniform force during conveying, which can better realize the splicing of the strip.

[0009] In some possible implementations, the first track and / or the second track are hollow, sealed tracks, and the traction body is configured to slide within the sealed track.

[0010] The above-described embodiment reduces the weight of the track by using a hollow sealed track as the sliding track, and reduces the space occupied by the threading device by placing the traction body inside the sealed track.

[0011] In some possible implementations, the sealed track is connected to a pneumatic control device so that the traction body slides within the sealed track under the action of a pressure difference.

[0012] The above-described embodiment connects the sealed track to the pneumatic control device, and uses the air pressure difference within the sealed track to push the traction body, thereby further pushing the slide bar device to slide along the sliding track. This avoids the need for an additional traction device, resulting in a simple structure and reduced weight of the threading device.

[0013] In some possible implementations, the traction body is magnetically connected to the slide bar device to traction the slide bar device.

[0014] The above-described embodiment, by setting a magnetic connection between the traction body and the sliding rod device, allows the traction body and the sliding rod device to slide without direct contact, thus avoiding additional connection structures. The structure is simple and easy to implement.

[0015] In some possible implementations, when the sealed track is a sealed circular tube, the traction body includes a cylindrical magnetic ball and a sealing ring. The diameter of the magnetic ball is smaller than the inner diameter of the sealed circular tube, and the sealing ring is fitted onto the surface of the magnetic ball to seal the gap between the magnetic ball and the sealed circular tube.

[0016] In the above embodiment, by setting the traction body to include a magnetic ball and a sealing ring, the attraction force between the magnetic ball and the slide rod device can be greater, the magnetic connection between the two can be better realized, and the gas at both ends of the traction body can be isolated, so that the air pressure difference at both ends can be different. Under the action of the air pressure difference, the traction body can slide along the sealed circular tube.

[0017] In some possible implementations, the difference between the diameter of the magnetic ball and the inner diameter of the sealing tube is 1-3 mm.

[0018] The above-described embodiment, by limiting the difference between the diameter of the magnetic ball and the inner diameter of the sealing tube, creates a certain gap between them. This ensures that the magnetic ball can smoothly bend at a point where the bending radius of the sealing tube is small, while also ensuring a strong magnetic force and stable magnetic connection between the magnetic ball and the sliding rod device, thereby improving the overall efficiency of the threading / connecting of the threading device.

[0019] In some possible implementations, the length of the magnetic ball along the conveying direction of the strip is 40-100 mm.

[0020] The above-described embodiment, by limiting the length of the magnetic ball, provides an optimized length value for the magnetic ball, which enables a strong magnetic connection between the magnetic ball and the sliding rod device while allowing the magnetic ball to slide smoothly within the sealed circular tube.

[0021] In some possible implementations, the magnetic spheres have rounded corners at both ends along the conveying direction of the strip.

[0022] In the above embodiment, by setting the two ends of the magnetic ball to be rounded, it can be ensured that the magnetic ball can pass smoothly when it slides through the minimum turning radius in the sliding track.

[0023] In some possible implementations, the slide bar device includes a connecting rod and a slider mechanism, the end of the connecting rod being connected to the slider mechanism, and the slider mechanism being slidably connected to the sliding track.

[0024] In the above embodiments, the slide bar device is confined to the sliding track, and the sliding of the slide bar device can be realized through the slider mechanism. The structure is simple and easy to implement.

[0025] In some possible implementations, the slider mechanism is provided with a mounting groove, and the end of the connecting rod is disposed in the mounting groove for connection with the slider mechanism.

[0026] In the above embodiment, by providing a mounting groove on the end of the connecting rod on the slider mechanism, the connecting rod can be connected to the slider mechanism. The connecting rod and the slider mechanism are detachable, so that the slider device can be easily connected to any position on the sliding track. The structure is simple and the operation is convenient.

[0027] In some possible implementations, the slider mechanism includes a pressure block for pressing the end of the connecting rod within the mounting groove after the end of the connecting rod is positioned within the mounting groove.

[0028] The above-described embodiment uses a pressure block to press the connecting rod, making the connection between the connecting rod and the slider mechanism more secure. This connection method is simple in structure and easy to operate.

[0029] In some possible implementations, the end of the connecting rod that contacts the pressure block has a flat surface.

[0030] The above-described embodiment allows the pressure block to better press the end of the connecting rod, resulting in a tighter fit, thanks to the flat surface.

[0031] In some possible implementations, the slider mechanism further includes a fixing element for securing the pressure block.

[0032] The above-described embodiment uses a fixing block to fix the connecting rod to the slider mechanism, and the two are detachable. The structure is simple and easy to install and disassemble.

[0033] In some possible implementations, the slider mechanism is provided with a groove, through which the slider mechanism is slidably connected to the sliding track.

[0034] The above-described embodiment uses a groove to confine the slider mechanism to the sliding track, and further confines the slider device within the sliding track, thereby simplifying the connection between the slider device and the sliding track. The structure is simple and easy to implement.

[0035] In some possible implementations, the slider mechanism includes a guide device that abuts against the slide rail to limit the slider mechanism when the slide rail is accommodated within the slide groove.

[0036] In the above embodiments, by providing a guide device in the slider mechanism, the slider mechanism can be limited, thereby limiting the sliding direction of the slider mechanism and facilitating the threading or splicing of the belt.

[0037] In some possible implementations, the guiding device includes a ball bearing, a spring, and an adjusting screw. The ball bearing abuts against the sliding track so that the slider mechanism slides along the sliding track. The spring abuts against the ball bearing, and the adjusting screw is used to adjust the deformation of the spring to adjust the relative position of the slider mechanism and the sliding track.

[0038] In the above embodiment, by setting the guide device to include balls, springs and adjusting screws, the sliding block structure and the sliding track are subjected to rolling friction, resulting in low friction. Furthermore, by adjusting the position of the sliding block mechanism relative to the sliding track using the spring, the relative position and friction between the sliding block device and the sliding track can be adjusted to better achieve the threading or splicing of the strip.

[0039] In some possible implementations, the slider mechanism includes four guide devices, which are symmetrically arranged.

[0040] The above-described embodiment, by symmetrically arranging the four guide devices, can achieve the limiting of the slider mechanism in the x, y, and z directions, realize the positioning of the slider device, and facilitate the threading or splicing of the belt.

[0041] In some possible implementations, the gap between the chute and the sliding track is 1-3 mm.

[0042] The above-described embodiments, by limiting the gap size between the slide groove and the sliding track, can ensure that the slide rod device does not get stuck when passing through a position with a small bending radius of the sliding track, while ensuring the stability of the magnetic connection between the slide rod device and the traction body, thereby improving the threading / connection efficiency of the threading device.

[0043] In some possible implementations, the chute has rounded corners at both ends along the conveying direction of the strip.

[0044] In the above embodiment, by setting the two ends of the slide groove to a rounded corner structure, the slide rod device can slide through the minimum turning radius without getting stuck when sliding along the slide track.

[0045] In some possible implementations, the connecting rod is a hollow circular tube.

[0046] The above-described embodiment reduces the weight of the connecting rod by making it a hollow round tube, thereby reducing the weight of the entire threading device and making it easier to thread or connect the belt.

[0047] Secondly, a method for splicing tape using a threading device is provided, which can use the threading device described in the first aspect or any possible embodiment of the first aspect to splice tape.

[0048] The technical solution of this application uses the above-mentioned threading device to splice the strip. The splicing method is simple and can quickly achieve the splicing of the strip, thereby improving the production efficiency of the battery.

[0049] In some possible implementations, the strip breaks into a first strip and a second strip, with the first strip upstream of the second strip along the conveying direction of the strip. The method includes: connecting the slide bar device to the sliding track and connecting the slide bar device to the second strip at the broken end of the second strip; driving the traction body to the broken end of the second strip such that the traction body pulls the slide bar device to slide along the sliding track to the broken end of the first strip; and splicing the first strip and the second strip.

[0050] The above-described embodiments achieve the splicing of the first and second strips through the sliding track, slide bar device and traction body included in the threading device. This enables the rapid splicing of broken strips at any position, and the splicing operation is simple, thereby improving battery production efficiency. Attached Figure Description

[0051] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0052] Figure 1 This is a schematic flowchart of an electrode manufacturing process disclosed in an embodiment of this application;

[0053] Figure 2 This is a schematic diagram of the structure of a strap-threading device disclosed in an embodiment of this application;

[0054] Figure 3 This is a schematic diagram of the structure of a traction body included in a strap-threading device disclosed in an embodiment of this application;

[0055] Figure 4 This is a schematic diagram of the structure of a sliding rod device included in a strap-threading device disclosed in an embodiment of this application;

[0056] Figure 5 This is a schematic flowchart of a method for splicing straps using a strap-threading device, as disclosed in an embodiment of this application.

[0057] Figure 6 This is a schematic flowchart illustrating a method for splicing straps using a strap-threading device, as disclosed in an embodiment of this application. The drawings are not to scale.

[0058] Marker explanation:

[0059] 20. Threading device;

[0060] 21 sliding tracks;

[0061] 22. Slide rod device;

[0062] 23. Traction body;

[0063] 21a First Track;

[0064] 21b second orbital;

[0065] 231 magnetic ball;

[0066] 232 sealing ring;

[0067] 222 linkage;

[0068] 221 Slider mechanism;

[0069] 2211 mounting slot;

[0070] 2212 briquettes;

[0071] 2213 Fastener;

[0072] 2214 Slide;

[0073] 2215 Guiding device;

[0074] 2215a ball bearings;

[0075] 2215b spring;

[0076] 2215c Adjusting set screw;

[0077] 30. Roller mechanism;

[0078] 31. Roller pass. Detailed Implementation

[0079] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0080] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application 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 on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0081] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0082] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0083] In this application, the battery may include lithium-ion batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited to this. The battery cells encapsulated in the battery may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited to this. Battery cells are generally divided into three types according to the encapsulation method: cylindrical battery cells, square battery cells, and pouch battery cells, and the embodiments of this application are not limited to this.

[0084] The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or a battery pack. A battery generally includes a housing for encapsulating one or more battery cells. The housing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0085] A single battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, and the uncoated positive current collector protrudes beyond the coated positive current collector, serving as the positive electrode tab. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0086] like Figure 1 As shown, exemplarily, the electrode manufacturing process for battery production can be subdivided into processes such as slurry stirring 101, electrode coating 102, electrode rolling 103, electrode slitting 104, and electrode drying 105. The purpose of electrode rolling is to make the active material and current collector more tightly bonded and the thickness more uniform, thereby increasing the compaction density of the electrode. As a crucial component of battery cells, the preparation efficiency of the electrode is extremely important for the production of battery cells. It is worth noting that the electrode is a relatively thin sheet structure, or it can be described as a thin sheet structure. During the electrode preparation process, the thin sheet structure needs to be passed through a rolling mechanism to gradually achieve processes such as electrode coating and electrode rolling. However, due to the influence of multiple factors, electrode strip breakage may occur when passing through the rolling mechanism, requiring splicing at the breakage point.

[0087] In the electrode preparation process, chains, wire ropes, belts, synchronous belts, etc., are typically used in the splicing device for splicing or threading the belt. These splicing devices are complex in structure, costly, cannot achieve long-distance closed-loop operation, require segmented setups, and occupy a large space. Furthermore, they can cause environmental pollution and generate metal particles through friction during operation. In this embodiment, the splicing device can also be referred to as a threading device.

[0088] In view of this, this application provides a tape threading device, including a sliding track, a sliding rod device, and a traction body. The sliding track is arranged along the conveying path of the tape, the sliding rod device is detachably connected to the sliding track, and the traction body can slide along the sliding track. When the tape breaks, the tape threading device can be used to connect the broken parts of the tape, realizing tape splicing. The tape threading device provided by this application can be integrated along the conveying path of the tape, splicing the tape when it breaks. The entire tape threading device is easy to use and can improve the production efficiency of electrode sheets.

[0089] The following examples illustrate the combination of Figure 2-5 A strap-wearing device provided in the embodiments of this application will be described in detail.

[0090] Figure 2 This paper shows a schematic diagram of a strap-threading device according to an embodiment of the present application, wherein... Figure 2 Image (a) shows a perspective view of a strap-threading device provided in an embodiment of this application. Figure 2 (b) shows a side view of a strap-wearing device provided in an embodiment of this application.

[0091] like Figure 2 As shown, the threading device 20 includes a sliding track 21, a sliding rod device 22, and a traction body 23. Figure 2 (Not shown in the image), the sliding track 21 is set along the conveying path of the strip, the slide bar device 22 is detachably connected to the sliding track 21, and the traction body 23 can slide along the sliding track.

[0092] It is understood that one way to connect the various structures included in the above-mentioned threading device 20 is as follows: when the belt breaks into a first belt and a second belt, the slide bar device 22 connects to the slide rail 21 at the broken end of the second belt and connects the second belt, the traction body 23 slides to the broken end of the second belt, and the traction slide bar device 22 slides along the slide rail 21 to the broken end of the first belt, so that the first belt and the second belt are connected, wherein, along the conveying direction of the belt, the first belt is upstream of the second belt.

[0093] Therefore, by setting a sliding track 21 along the strip conveying path, setting a sliding rod device 22 detachably connected to the sliding track 21, and setting a traction body 23 that can slide along the sliding track 21, strip splicing can be achieved when the strip breaks. Thus, the sliding track 21 is integrated on the strip conveying path, and the sliding rod device 22 can be detachably connected to any position on the sliding track 21, allowing for splicing at any time. The structure is simple, the operation is convenient, and it can improve the production efficiency of electrode sheets and further improve the production efficiency of batteries.

[0094] It is worth noting that the sliding track 21 of the aforementioned belt threading device 20 is arranged along the conveying path of the belt, and the conveying path of the belt can be realized by setting a roller mechanism, for example... Figure 2 In the middle, the roll-passing mechanism 30 includes multiple roll-passing rollers 31. The strip passes around the roll-passing rollers 31 to realize the transfer of the strip from the unwinding device to the winding device. Regarding the unwinding device and the winding device, Figure 2 As not shown in the diagram, this application does not limit the specific structure of the unwinding and rewinding devices. Optionally, the sliding track can be as close as possible to the roller guide mechanism, and the minimum turning radius of the sliding track can be 300 mm.

[0095] It is also worth noting that the tape threading device 20 provided in this application embodiment can be used not only for tape splicing after tape breakage, but also for the initial stage of tape transfer from unwinding device to winding device, and this application does not limit it in this regard.

[0096] It is also worth noting that the shape and structure of the strip conveying path can be of various types and are not limited to these. Figure 2 As shown, the shape of the sliding track can vary depending on the conveying path of the strip. Furthermore, when the strip is conveyed by the roller conveyor mechanism, the rollers included in the roller conveyor mechanism can also have various shapes and structures, which are not limited in this application.

[0097] It is also worth noting that when the traction body 23 slides along the sliding track 21, the driving method of the traction body 23 can be electric motor drive, pneumatic drive, or other driving methods, and this application does not limit it.

[0098] In the embodiments of this application, such as Figure 2 The sliding track 21 shown in (a) may include a first track 21a and a second track 21b arranged opposite to each other. Optionally, the sliding track 21 may include one track or multiple tracks, which is not limited in this application.

[0099] Therefore, by setting the sliding track 21, including the first track 21a and the second track 21b arranged opposite to each other, the conveying direction of the strip is defined, the overall structure is symmetrical, and the strip is subjected to uniform force when conveying the strip, which can better realize the splicing of the strip.

[0100] In the embodiments of this application, such as Figure 2 As shown in (a), the first track 21a and / or the second track 21b are hollow sealed tracks, and the traction body 23 is configured to slide within the sealed track. For example, both the first track 21a and the second track 21b are hollow sealed tracks; or, for example, the first track 21a is a hollow sealed track and the second track 21b is a solid sealed track. It is worth noting that when the sealed track is hollow, the inner wall of the sealed track can be circular, arc-shaped, rectangular, etc., and this application does not limit this.

[0101] Therefore, by using a hollow sealed track as the sliding track 21, the weight of the track is reduced, and by placing the traction body 23 inside the sealed track, the space occupied by the threading device is reduced.

[0102] Optionally, the sealing track is an integrated structure made of hollow materials. The material of the sealing track can be non-magnetic materials such as stainless steel and Teflon. This application does not limit this.

[0103] Optionally, the first track 21a and / or the second track 21b may not be circular tubes, but may be of other shapes, such as perpendicular to the sliding direction of the sliding track 21, and the cross-section of the first track 21a and / or the second track 21b may be elliptical, polygonal or irregular, etc. This application does not limit this.

[0104] In this embodiment, the sealed track can be connected to a pneumatic control device so that the traction body 23 slides within the sealed track under the action of a pressure difference.

[0105] Optionally, the pneumatic control device may include a proportional valve and a pneumatic control panel.

[0106] Therefore, by using the air pressure difference within the sealed track to push the traction body 23, which in turn pushes the slide bar device 22 to slide along the sliding track 21, the setting of an additional traction device is avoided, the structure is simple, and the weight of the threading device is reduced.

[0107] Optionally, the sealing track can be a sealing circular tube. The outer diameter of the sealing circular tube can be 20-50mm, such as 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, and the inner diameter can be 16-46mm, such as 16mm, 21mm, 26mm, 31mm, 36mm, 41mm, 46mm. By limiting the size of the sealing circular tube, it is possible to ensure that the sealing circular tube has a certain strength without occupying excessive space.

[0108] The following examples illustrate the combination of Figure 3The structure of the traction body 23 included in the threading device 20 provided in this application embodiment will be described, wherein... Figure 3 (a) shows a perspective view of the traction body 23. Figure 3 (b) shows the front view of the traction body 23.

[0109] In this embodiment, the traction body 23 is magnetically connected to the slide bar device 22 to pull the slide bar device 22. Figure 3 As shown, the second track 21b is a hollow sealed track. The traction body 23 can be set in the second track 21b and is magnetically connected to the slide rod device 22, so that the slide rod device 22 can be driven to slide when the traction body 23 slides.

[0110] Optionally, the sliding rod device and the traction body can also be connected in other ways, which are not limited in this application.

[0111] Therefore, by setting the traction body 23 and the slide bar device 22 to be magnetically connected, the traction body 23 and the slide bar device 22 do not need to be in direct contact to drive the slide bar device 22 to slide, avoiding additional connection structures, and the structure is simple and easy to implement.

[0112] In the embodiments of this application, such as Figure 3 As shown, when the sealed track is a sealed circular tube, the traction body 23 may include a cylindrical magnetic ball 231 and a sealing ring 232. The diameter of the magnetic ball 231 is smaller than the inner diameter of the sealed circular tube, and the sealing ring 232 is sleeved on the surface of the magnetic ball 231 to seal the gap between the magnetic ball 231 and the sealed circular tube.

[0113] Optionally, an arc-shaped groove can be provided on the surface of the magnetic ball 231, and at least part of the sealing ring 232 is placed in the arc-shaped groove, so that the connection between the sealing ring 232 and the magnetic ball 231 is tighter, and the sealing ring 232 and the magnetic ball 231 are prevented from separating when the traction body 23 slides.

[0114] Therefore, by setting the traction body 23 to include a magnetic ball 231 and a sealing ring 232, the attraction force between the magnetic ball 231 and the slide rod device 22 can be greater, and the magnetic connection between the two can be better achieved. Furthermore, the gas at both ends of the traction body 23 is isolated, so that the air pressure difference at both ends can be different. Under the action of the air pressure difference, the traction body 23 can slide along the sealed circular tube.

[0115] Optionally, the difference between the diameter of the magnetic ball 231 and the inner diameter of the sealing tube is 1-3 mm, specifically 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm. Therefore, by limiting the difference between the diameter of the magnetic ball 231 and the inner diameter of the sealing tube, a certain gap is created between them. This ensures that the magnetic ball 231 can smoothly bend at a point where the bending radius of the sealing tube is small, while simultaneously ensuring a strong magnetic force and stable magnetic connection between the magnetic ball 231 and the sliding rod device 22, thereby improving the overall tape threading / connection efficiency of the tape threading device 20.

[0116] Optionally, the length of the magnetic ball 231 along the conveying direction of the strip is 40-100mm, for example, it can be 60mm. Therefore, by limiting the length of the magnetic ball 231, an optimized length value of the magnetic ball 231 is given, which can achieve a strong magnetic connection between the magnetic ball 231 and the slide bar device 22, while also enabling the magnetic ball 231 to slide smoothly in the sealed circular tube.

[0117] Optionally, the magnetic ball 231 can be made of a strong magnetic material, such as a neodymium iron boron magnet, with a surface magnetic field strength of 10,000-15,000 Gauss, and N and S poles along the cylindrical axis of the magnetic ball 231.

[0118] Optionally, the magnetic ball 231 has rounded corners at both ends along the conveying direction of the strip. This ensures that the magnetic ball 231 can pass smoothly when sliding through the minimum turning radius in the sliding track 21.

[0119] The following examples illustrate the combination of Figure 4 The sliding rod device 22 provided in the embodiments of this application will be described. Figure 4 This illustration shows a schematic diagram of the structure of the sliding rod device 22 included in the threading device 20 provided in an embodiment of this application, wherein... Figure 4 (a) shows a front view of the slide bar device 22. Figure 4 (b) shows a side view of the slide device 22.

[0120] In the embodiments of this application, such as Figure 4 As shown, the slider device 22 includes a connecting rod 222 and a slider mechanism 221. The end of the connecting rod 222 is connected to the slider mechanism 221, and the slider mechanism 221 is slidably connected to the sliding track 21.

[0121] Therefore, the sliding rod device 22 is confined to the sliding track 21, and the sliding of the sliding rod device 22 can be realized through the slider mechanism 221. The structure is simple and easy to implement.

[0122] In this embodiment, the slider mechanism 221 is provided with a mounting groove 2211, and the end of the connecting rod 222 is disposed in the mounting groove 2211 to connect with the slider mechanism 221.

[0123] Therefore, by providing a mounting groove 2211 on the end of the mounting rod 222 on the slider mechanism 221, the mounting rod 222 can be connected to the slider mechanism 221. The mounting rod 222 and the slider mechanism are detachable, so that the slider device 22 can be easily connected to any position on the sliding track 21. The structure is simple and the operation is convenient.

[0124] In this embodiment of the application, the slider mechanism 221 may further include a pressure block 2212, which is used to press the end of the connecting rod 222 in the mounting groove 2211 after the end of the connecting rod 222 is disposed in the mounting groove 2211.

[0125] Therefore, by pressing the connecting rod 222 with the pressure block 2212, the connection between the connecting rod 222 and the slider mechanism 221 is made more secure, and this connection method has a simple structure and is easy to operate.

[0126] In this embodiment, the surface of the connecting rod 222 that contacts the pressure block 2212 is a plane. This plane allows the pressure block 2212 to better press the end of the connecting rod 222, resulting in a tighter fit.

[0127] In this embodiment, the slider mechanism 221 may further include a fixing member 2213 for fixing the pressure block 2212. For example, the fixing member 2213 is a bolt, which passes through the fixing member 2213 to fix the pressure block 2212 to the slider mechanism 221. This allows the connecting rod 222 to be fixed to the slider mechanism 221, and the two are detachable, resulting in a simple structure that is easy to install and disassemble.

[0128] In this embodiment, the slider mechanism 221 is provided with a slide groove 2214, and the slider mechanism is slidably connected to the sliding track 21 through the slide groove 2214. Thus, by providing the slide groove 2214, the slider mechanism 221 is confined to the sliding track 21, and the slider device 22 is further confined within the sliding track 21, thereby simplifying the connection between the slider device 22 and the sliding track 21, resulting in a simple structure that is easy to implement.

[0129] Optionally, the diameter of the groove 2214 can be 21-53mm, for example, 21mm, 27mm, 30mm, 32mm, 37mm, 40mm, 42mm, 47mm, 50mm, 52mm, or 53mm. Alternatively, the difference between the diameter of the groove 2214 and the outer diameter of the sealing tube can be 1-3mm. By limiting the diameter of the groove 2214, it is possible to ensure that the sliding rod device 22 does not get stuck at the position where the bending radius of the sealing tube is small, while ensuring the stability of the magnetic connection between the sliding rod device 22 and the traction body 23, thereby improving the threading / connection efficiency of the threading device 20.

[0130] In this embodiment, the slider mechanism 221 may further include a guide device 2215. When the sliding track 21 is accommodated in the slide groove 2214, the guide device 2215 abuts against the sliding track 21 to limit the slider mechanism 221.

[0131] Therefore, by setting a guide device 2215 in the slider mechanism 221, the slider mechanism 221 can be limited, thereby limiting the sliding direction of the slider mechanism 221 and facilitating the threading or connecting of the belt.

[0132] In this embodiment, the guide device 2215 includes a ball 2215a, a spring 2215b, and an adjusting screw 2215c. The ball 2215a abuts against the sliding track 21 so that the slider mechanism 221 slides along the sliding track 21. The spring 2215b abuts against the ball 2215a. The adjusting screw 2215c is used to adjust the deformation of the spring 2215b so as to adjust the relative position of the slider mechanism 221 and the sliding track 21.

[0133] Therefore, by setting the guide device 2215 to include a ball bearing 2215a, a spring 2215b, and an adjusting screw 2215c, the slider mechanism 221 and the sliding track 21 are subjected to rolling friction, resulting in low friction. Furthermore, by adjusting the position of the slider mechanism 221 relative to the sliding track 21 using the spring 2215b, the relative position and friction between the slider device 22 and the sliding track 21 can be adjusted to better achieve the threading or splicing of the strip.

[0134] It is worth noting that the ball bearing 2215a can be made of ceramic, which can prevent the generation of metal particles from friction.

[0135] In this application, the slider mechanism 221 may include four guide devices 2215, which are symmetrically arranged.

[0136] Therefore, by symmetrically arranging the four guide devices 2215, the slider mechanism 221 can be limited in the x, y, and z directions, and the slider device 22 can be positioned, making it easy to thread or connect the belt.

[0137] Optionally, the gap between the slide groove 2214 and the sliding track 21 can be 1-3mm. By limiting the gap between the slide groove 2214 and the sliding track 21, it is possible to ensure that the slide rod device 22 does not get stuck when passing through the position with a small bending radius of the sliding track 21, while ensuring the stability of the magnetic connection between the slide rod device 22 and the traction body 23, thereby improving the belt threading / connection efficiency of the belt threading device 20.

[0138] Optionally, the two ends of the chute 2214 along the conveying direction of the strip have rounded corners. This allows the slide bar device 22 to slide through the minimum turning radius without jamming when sliding along the slide rail 21.

[0139] Optionally, the connecting rod 222 can be a hollow cylindrical tube. For example, the outer diameter of the connecting rod 222 can be 30mm, the inner diameter can be 20mm, and the material of the connecting rod 222 can be carbon steel, stainless steel, aluminum alloy, fiberglass, etc., thereby reducing the weight of the connecting rod while ensuring its strength.

[0140] It is worth noting that at least part of the slider mechanism can be made of magnetically conductive steel.

[0141] The above describes the structure of a threading device provided in the embodiments of this application. The threading device 20 provided in the embodiments of this application can be used to splice tapes, that is, it can adopt the above-described... Figure 2-4 The threading device 20 shown in the figure splices the strip.

[0142] The following examples illustrate the combination of Figure 5 and 6 The method of using a threading device for connecting straps provided in the embodiments of this application will be described.

[0143] like Figure 5 As shown, the method 300 for splicing straps using a strap-threading device includes:

[0144] 301, the strip breaks into a first strip and a second strip. Along the strip conveying direction, when the first strip is upstream of the second strip, at the broken end of the second strip, the sliding rod device 22 is connected to the sliding track 21, and the sliding rod device 22 is connected to the second strip.

[0145] In this embodiment, since the slide bar device 22 and the sliding track 21 are detachably connected, the slide bar device 22 can be connected to any position of the sliding track 21, such as the position of the sliding track 21 corresponding to the broken end of the second strip. After the slide bar device 22 is fixed, the slide bar device 22 and the second strip can be connected, for example, the second strip can be connected to the slide bar device by tape.

[0146] 302, drive the traction body 23 to the broken end of the second strip so that the traction body 23 pulls the slide bar device 22 to slide along the sliding track 21 to the broken end of the first strip.

[0147] In this embodiment of the application, the traction body 23 can be driven to the broken end of the second strip by means of air pressure difference, so that the traction body 23 can be connected to the slide bar device 22 located at the broken end of the second strip. Subsequently, the traction body 23 can pull the slide bar device 22 to move, such as pulling the slide bar device 22 to slide along the sliding track 21 to the broken end of the first strip.

[0148] 303, splicing the first strip and the second strip.

[0149] In this embodiment of the application, the slide bar device 22 drives the broken end of the second strip to slide to the broken end of the first strip. The broken end of the first strip and the broken end of the second strip are close to each other, and the two broken ends can be connected by tape or the like, thereby realizing the splicing of the first strip and the second strip.

[0150] Therefore, by using the aforementioned threading device 20 to splice the strips, the splicing method is simple and can quickly achieve the splicing of the strips, thereby improving the production efficiency of the battery.

[0151] like Figure 6 As shown, the method 400 for splicing straps using a strap-threading device includes:

[0152] 401. Confirm the location of the strip break. For example, the location of the strip break can be manually determined so that splicing can be performed at the confirmed location later.

[0153] 402. The slide bar device 22 is installed at the location of the strip breakage on the sliding track 21, and one end of the strip breakage is fixed to the slide bar device 22 with tape. For example, after confirming the location of the strip breakage, the slide bar device 22 is manually installed at the confirmed location, and then one end of the strip breakage is fixed to the slide bar device 22, so that the slide bar device 22 can pull the strip from one end of the strip breakage to the other end of the strip breakage.

[0154] It is worth noting that, in the strip conveying direction, one end of the strip breakage fixed to the slide bar device 22 is located downstream of the other end of the strip breakage not fixed to the slide bar device 22.

[0155] 403, the air pressure difference drives the traction body 23, causing it to move along the sliding track 21 to the position of the slide bar device 22 and engage with it. For example, when the traction body 23 includes... Figure 5 When the magnetic ball 231 and the traction body 23 are located in the sealed circular tube, the traction body 23 can be pushed to slide in the sealed circular tube, and when it slides to the installation position of the slide rod device 22, it magnetically engages with the slide rod device 22.

[0156] Optionally, a pushing force can be provided to the traction body 23. When the pushing force is greater than the frictional force between the traction body 23 and the sliding track 21, the traction body 23 can slide within the sealed circular tube of the sliding track 21 and reach the installation position of the slide rod device 22, where it magnetically engages with the slide rod device 22. For example, a pushing force greater than the frictional force of 50-20N, such as 5N, can be provided to the traction body 23, causing the traction body 23 to slide within the sealed circular tube until it stops sliding after magnetically engaging with the slide rod device 22.

[0157] 404, start the unwinding device and drive the traction body 23 so that the traction body 23 pulls the slide bar device 22 along the sliding track 21 to the other end of the strip break.

[0158] Optionally, the driving force required to drive the traction body 23 can be greater than the frictional force by 20-100N, such as 30N, so that the traction body 23 can pull the slide bar device 22 and further pull the belt to achieve belt splicing.

[0159] It is worth noting that the unwinding device and the driving traction body can be started simultaneously or sequentially, but the time delay between the two operations should be limited to a certain period of time to ensure that the strip moves along the sliding track.

[0160] It is also worth noting that, in the strip conveying direction, the other end of the strip break is located upstream of the other end of the strip break.

[0161] 405. At the location where the strip breaks, splice the strip, remove the slide bar device 22 installed on the sliding rail 21, and return the traction body 23 to its original position.

[0162] In this embodiment, after the strip is spliced, the slide bar device 22 connected to the sliding track 21 is manually removed, and pressure is applied to the traction body 23 so that the traction body 23 slides back to its original position, i.e., returns to its original position.

[0163] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A strap-threading device, characterized in that, The threading device (20) includes: A sliding track (21) is provided along the conveying path of the strip; A sliding rod device (22) is detachably connected to the sliding track (21). The sliding rod device (22) includes a connecting rod (222) and a slider mechanism (221). The end of the connecting rod (222) is connected to the slider mechanism (221). The slider mechanism (221) is slidably connected to the sliding track (21). The slider mechanism (221) is provided with a mounting groove (2211). The end of the connecting rod (222) is disposed in the mounting groove (2211) to connect with the slider mechanism (221). The slider mechanism (221) includes a pressure block (2212) for pressing the end of the connecting rod (222) in the mounting groove (2211) after the end of the connecting rod (222) is disposed in the mounting groove (2211). The traction body (23) can slide along the sliding track (21).

2. The threading device according to claim 1, characterized in that, The sliding track (21) includes a first track (21a) and a second track (21b) arranged opposite to each other.

3. The threading device according to claim 2, characterized in that, The first track (21a) and / or the second track (21b) are hollow sealed tracks, and the traction body (23) is configured to slide within the sealed track.

4. The threading device according to claim 3, characterized in that, The sealed track is connected to the air pressure control device so that the traction body (23) slides in the sealed track under the action of air pressure difference.

5. The threading device according to claim 4, characterized in that, The traction body (23) is magnetically connected to the slide bar device (22) to pull the slide bar device (22).

6. The threading device according to claim 5, characterized in that, When the sealed track is a sealed circular tube, the traction body (23) includes a cylindrical magnetic ball (231) and a sealing ring (232). The diameter of the magnetic ball (231) is smaller than the inner diameter of the sealed circular tube. The sealing ring (232) is sleeved on the surface of the magnetic ball (231) to seal the gap between the magnetic ball (231) and the sealed circular tube.

7. The threading device according to claim 6, characterized in that, The difference between the diameter of the magnetic ball (231) and the inner diameter of the sealing tube is 1-3 mm.

8. The threading device according to claim 7, characterized in that, The length of the magnetic ball (231) along the conveying direction of the strip is 40-100 mm.

9. The threading device according to claim 8, characterized in that, The magnetic ball (231) has rounded corners at both ends along the conveying direction of the strip.

10. The threading device according to any one of claims 1-9, characterized in that, The end of the connecting rod (222) that contacts the pressure block (2212) is a plane.

11. The threading device according to any one of claims 1-9, characterized in that, The slider mechanism (221) also includes a fixing member (2213) for fixing the pressure block (2212).

12. The threading device according to any one of claims 1-9, characterized in that, The slider mechanism (221) is provided with a slide groove (2214), and the slider mechanism (221) is slidably connected to the sliding track (21) through the slide groove (2214).

13. The threading device according to claim 12, characterized in that, The slider mechanism (221) includes a guide device (2215) which abuts against the sliding track (21) to limit the slider mechanism (221) when the sliding track (21) is accommodated in the groove (2214).

14. The threading device according to claim 13, characterized in that, The guide device (2215) includes a ball (2215a), a spring (2215b), and an adjusting screw (2215c). The ball (2215a) abuts against the sliding track (21) so that the slider mechanism (221) slides along the sliding track (21). The spring (2215b) abuts against the ball (2215a). The adjusting screw (2215c) is used to adjust the deformation of the spring (2215b) to adjust the relative position of the slider mechanism (221) and the sliding track (21).

15. The threading device according to claim 13 or 14, characterized in that, The slider mechanism (221) includes four guide devices (2215), which are symmetrically arranged.

16. The threading device according to claim 12, characterized in that, The gap between the chute (2214) and the sliding track (21) is 1-3mm.

17. The threading device according to claim 12, characterized in that, The chute (2214) has rounded corners at both ends along the conveying direction of the strip.

18. The threading device according to any one of claims 1-9, characterized in that, The connecting rod (222) is a hollow circular tube.

19. A method for splicing straps using a strap-threading device, characterized in that, The tape is spliced ​​using the threading device (20) according to any one of claims 1-18.

20. The method according to claim 19, characterized in that, The strip is broken into a first strip and a second strip, along the conveying direction of the strip, wherein the first strip is upstream of the second strip, and the method includes: At the broken end of the second strip, the slide bar device (22) is connected to the sliding track (21), and the slide bar device (22) is connected to the second strip; Drive the traction body (23) to the broken end of the second strip so that the traction body (23) pulls the slide bar device (22) to slide along the sliding track (21) to the broken end of the first strip; The first strip and the second strip are spliced ​​together.

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