Battery strip non-stop continuous unwinding system

Abstract

The utility model discloses a non-stop continuous unwinding system for a battery strip, which comprises an unwinding device used for unwinding the strip; the strip splicing device is used for splicing strips; the caching device is used for caching the strip and releasing the strip in the strip splicing process; the unwinding device comprises two unwinding mechanisms which are arranged in parallel; the feeding end of the belt connecting device is provided with two guide roller sets corresponding to the two unwinding mechanisms, and first guide mechanisms used for guiding the belt materials are arranged between the unwinding mechanisms and the corresponding guide roller sets. A belt clamping roller set used for clamping the strips is arranged at the discharging end of the strip receiving device, and a second guide mechanism used for guiding the strips is arranged between the belt clamping roller set and the feeding end of the temporary storage device. According to the non-stop continuous unwinding system for the battery strip, a pole piece can be continuously fed in the strip splicing process.

Description

Technical Field

[0001] This utility model belongs to the field of battery stacking production technology, specifically a continuous unwinding system for battery strip without stopping the machine. Background Technology

[0002] In the battery cell manufacturing process, both the electrode sheets and the separator are strip materials, and continuous feeding is achieved through unwinding of the rolls. Current technology typically sets up two unwinding stations, each containing a roll of material. After the previous roll is unwound, the beginning of the next roll needs to be joined to the end of the previous roll to avoid the inefficiency and material waste caused by manual material placement.

[0003] Therefore, in existing technologies, a splicing device is generally set up to automatically connect the beginning of the next roll of strip to the end of the previous roll after the previous roll has been fed. While the splicing device greatly improves efficiency and reduces material waste, it requires fixing the end of the previous roll before connecting the beginning of the next roll. This means that the strip cannot be fed forward during the splicing process, reducing efficiency and posing risks to downstream processes. For example, in battery lamination, electrodes and separators are thermally bonded. Due to the material properties of the separator, the temperature and time for thermal bonding are strictly limited. If the electrodes and separator remain stationary within the thermal bonding device during splicing, the separator may overheat and be damaged. Furthermore, the inability to continuously feed the strip during splicing necessitates deceleration and subsequent acceleration control in downstream continuous production processes, increasing control complexity and reducing product yield. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to provide a continuous unwinding system for battery strips that can continuously feed battery strips during the splicing process.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A continuous unwinding system for battery strip without stopping the machine includes:

[0007] Unwinding device, used for unwinding strip;

[0008] Splicing device, used for splicing strips;

[0009] A buffer device for buffering the strip and releasing the strip during the splicing process;

[0010] The unwinding device includes two unwinding mechanisms arranged in parallel; the feed end of the tape receiving device is provided with two guide roller groups corresponding to the two unwinding mechanisms, and a first guide mechanism for guiding the tape is provided between the unwinding mechanism and the corresponding guide roller group;

[0011] The discharge end of the tape receiving device is provided with a tape clamping roller group for clamping the tape, and a second guiding mechanism for guiding the tape is provided between the tape clamping roller group and the feed end of the buffer device.

[0012] The discharge end of the buffer device is provided with a third guiding mechanism for guiding the strip.

[0013] Furthermore, a tensioning assembly for controlling the strip tension is provided between the unwinding mechanism and the corresponding guide roller group.

[0014] Furthermore, a first-process correction component for correcting the deviation of the strip is provided between the clamping roller group and the feed end of the buffer device.

[0015] Furthermore, a first tension control component for controlling the strip tension is provided between the clamping roller group and the first process correction component; the first tension control component includes a first swing arm component for adjusting the strip tension and a first tension sensor for detecting the strip tension.

[0016] Furthermore, a dust removal assembly for removing dust from the strip is provided between the pinch roller group and the feed end of the buffer device; the dust removal assembly includes a dust removal device and at least one magnetic rod arranged along the strip transport direction; the dust removal device is disposed between the pinch roller group and the first tension control assembly.

[0017] Furthermore, the discharge end of the buffer device is provided with a second process correction component for strip correction.

[0018] Furthermore, a second tension control component is provided between the discharge end of the buffer device and the second process correction component; the second tension control component includes a second swing arm component for adjusting the strip tension and a second tension sensor for detecting the strip tension.

[0019] Furthermore, a straightening component is provided between the second tension control component and the second process correction component.

[0020] Furthermore, a color mark detection component is provided between the second tension control component and the straightening component.

[0021] Furthermore, the discharge side of the second process correction assembly is equipped with an encoder roller group for measuring the conveying length of the strip.

[0022] Furthermore, the discharge end of the buffer device is also provided with at least one antistatic component spaced apart along the conveying direction of the strip.

[0023] The beneficial effects of this utility model are as follows:

[0024] This utility model discloses a continuous unwinding system for battery strip without stopping the machine. It employs two unwinding mechanisms: one for unwinding the strip material and the other for storing spare material. During normal unwinding, a buffer device gradually buffers the strip material while simultaneously controlling its uniform feed towards the rear. After the previous roll is unwound, a splicing device connects the tail end of the previous roll to the head end of the next roll. During this splicing operation, clamping rollers press the previous roll to control its tail end position. The splicing device then connects the tail end of the previous roll to the head end of the next roll. Simultaneously, because the buffer device holds sufficient strip material, it releases the strip material during the splicing operation, ensuring continuous feeding towards the rear and maintaining a constant feed rate, effectively preventing any impact on subsequent processes.

[0025] This utility model also has the following advantages:

[0026] By setting a first process correction component between the clamping roller group and the feed end of the buffer device, and setting a second process correction component at the discharge end of the buffer device, the strip material can be corrected.

[0027] By setting a tensioning component between the unwinding mechanism and the corresponding guide roller group, setting a first tension control component between the clamping roller group and the first process correction component, and setting a second tension control component between the discharge end of the buffer device and the second process correction component, the tension of the strip during the unwinding process can be effectively controlled. Attached Figure Description

[0028] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0029] Figure 1 This is a schematic diagram of an embodiment of the battery strip continuous unwinding system of this utility model;

[0030] Figure 2 for Figure 1 Axonometric drawing;

[0031] Figure 3 This is a schematic diagram of the unwinding device;

[0032] Figure 4 for Figure 3 Axonometric drawing;

[0033] Figure 5 This is a front view of the roll changing support mechanism;

[0034] Figure 6 for Figure 5 AA section view;

[0035] Figure 7 for Figure 5 The left view;

[0036] Figure 8 for Figure 5 Axonometric drawing;

[0037] Figure 9 This is a front view of the tape-connecting device;

[0038] Figure 10 for Figure 9 Axonometric drawing;

[0039] Figure 11 This is a rear view of the tape-connecting device;

[0040] Figure 12 for Figure 11 Axonometric drawing;

[0041] Figure 13 Top view of the negative pressure suction component;

[0042] Figure 14 for Figure 13 AA section view;

[0043] Figure 15 for Figure 13 Axonometric drawing;

[0044] Figure 16 This is a front view of the push-bond tape assembly;

[0045] Figure 17 for Figure 16 Upper axonometric drawing;

[0046] Figure 18 for Figure 16 The lower axonometric drawing;

[0047] Figure 19 This is a top view of the components being attached;

[0048] Figure 20 for Figure 19 BB cross-sectional view;

[0049] Figure 21 for Figure 19 Axonometric drawing.

[0050] 10-Unwinding device; 11-Fixed support end; 110-Fixed support seat; 111-Second bearing seat; 112-Mandrel; 113-Unwinding drive motor; 114-Synchronous belt mechanism; 12-Modible support end; 120-Modible support seat; 121-Bearing seat; 122-Rotating shaft; 123-Rotating plate; 124-Support plate; 125-First guide rail; 126-First slider; 127-First drive cylinder; 128-Slot; 129-Second drive cylinder; 130 - Locking plug; 131 - Locking socket; 1311 - Locking sleeve; 132 - Rotation drive motor; 133 - Drive shaft; 134 - Coupling; 135 - First limiting plate; 136 - Second limiting plate; 137 - First contact sensor; 138 - Second contact sensor; 139 - Third contact sensor; 140 - Fourth contact sensor; 141 - Side baffle; 142 - Optical coupler sensor; 143 - Sensing plate; 144 - Second guide rail; 145 - Second slider;

[0051] 20 - Attaching device; 21 - Back plate; 211 - First swing slide rail; 212 - First swing slider; 213 - First servo motor; 214 - First lead screw; 215 - First optocoupler sensor; 216 - First light-blocking plate; 2171 - Second swing track; 2172 - Second swing slider; 2181 - Second servo motor; 2182 - Second lead screw; 2191 - Second optocoupler sensor; 2192 - Second light-blocking plate; 22 - Negative pressure attraction assembly; 221 - Negative pressure attraction frame; 2211 - Moving slide rail; 2212 - Moving slider; 222 - First negative pressure plate; 223 - First negative pressure attraction surface; 224 - Pressing and cutting surface; 225 - Pressing and cutting frame; 22 6-Pressure plate; 227-Pressure plate drive mechanism; 228-Cutter; 229-Cutter drive mechanism; 23-Glue pushing and splicing assembly; 230-Glue pushing and splicing frame; 231-Movement drive mechanism; 232-Glue splicing frame; 233-Glue pushing plate; 234-Glue pushing drive mechanism; 235-Second negative pressure plate; 236-Second negative pressure suction surface; 237-Mounting groove; 238-Nut seat; 24-Clamping assembly; 240-Clamping frame; 241-Clamping roller; 242-Roller seat; 243-Roll gap adjustment drive mechanism; 244-Adjusting track; 245-Adjusting slider; 246-Clamping drive motor; 247-Nut seat; 25-Guide roller group; 26-Guide roller group;

[0052] 30-Buffer device; 41-First guide tube; 42-Second guide roller; 43-Third guide tube; 44-Tensioning assembly; 45-First process correction assembly; 46-First swing arm assembly; 47-First tension sensor; 48-Dust removal device; 49-Magnetic rod; 50-Second process correction assembly; 51-Second swing arm assembly; 52-Second tension sensor; 53-Straightening assembly; 54-Color mark detection assembly; 55-Encoder roller group; 56-Antistatic assembly. Detailed Implementation

[0053] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0054] like Figure 1-2 As shown, the battery strip continuous unwinding system of this embodiment includes an unwinding device 10, a splicing device 20, and a buffer device 30. In this embodiment: the unwinding device is used for unwinding the strip; the splicing device is used for splicing the strip; and the buffer device is used for buffering the strip and releasing the strip during the splicing process.

[0055] Specifically, the unwinding device 10 includes two unwinding mechanisms arranged in parallel; the feeding end of the tape receiving device 20 is provided with two guide roller groups 25 corresponding to the two unwinding mechanisms, and a first guiding mechanism for guiding the tape is provided between the unwinding mechanism and the corresponding guide roller group 25. The first guiding mechanism includes a plurality of first guide rollers 41 arranged at intervals. The discharging end of the tape receiving device 20 is provided with a clamping roller group for clamping the tape, and a second guiding mechanism for guiding the tape is provided between the clamping roller group and the feeding end of the buffer device 30. The second guiding mechanism includes a plurality of second guide rollers 42 arranged at intervals. The discharging end of the buffer device 30 is provided with a third guiding mechanism for guiding the tape, and the third guiding mechanism includes a plurality of third guide rollers 43 arranged at intervals.

[0056] In a preferred embodiment of this invention, a tensioning component 44 for controlling the strip tension is provided between the unwinding mechanism and the corresponding guide roller group 25. The tensioning component 44 can effectively control the tension of the strip between the unwinding mechanism and the corresponding guide roller group 25.

[0057] In a preferred embodiment of this example, a first process correction component 45 for correcting the deviation of the strip is provided between the clamping roller group and the feed end of the buffer device 30.

[0058] In a preferred embodiment of this example, a first tension control component for controlling strip tension is provided between the clamping roller group and the first process correction component 45. Specifically, the first tension control component includes a first swing arm component 46 for adjusting strip tension and a first tension sensor 47 for detecting strip tension.

[0059] In a preferred embodiment of this example, a dust removal assembly is provided between the clamping roller group and the feed end of the buffer device 30 for removing dust from the strip. In this embodiment, the dust removal assembly includes a dust removal device 48 and at least one magnetic rod 49 disposed along the strip transport direction; the dust removal device 48 is disposed between the clamping roller group and the first tension control assembly. By providing the dust removal device 48 and the magnetic rod 49, the technical objective of removing dust from the strip can be achieved.

[0060] In a preferred embodiment of this example, the discharge end of the buffer device 30 is provided with a second process correction component 50 for strip correction, thereby achieving the technical objective of strip correction.

[0061] In a preferred embodiment of this example, a second tension control component is provided between the discharge end of the buffer device 30 and the second process correction component 50. In this embodiment, the second tension control component includes a second swing arm component 51 for adjusting the strip tension and a second tension sensor 52 for detecting the strip tension.

[0062] In a preferred embodiment of this example, a straightening component 53 is provided between the second tension control component and the second process correction component 50 for straightening the strip. In another preferred embodiment, a color mark detection component 54 is provided between the second tension control component and the straightening component 53 for detecting color marks on the strip.

[0063] In a preferred embodiment of this example, the discharge side of the second process correction assembly 50 is provided with an encoder roller group 55 for measuring the conveying length of the strip.

[0064] In a preferred embodiment of this example, the discharge end of the buffer device 30 is further provided with at least one antistatic component 56 spaced apart along the conveying direction of the strip, for performing antistatic treatment on the strip.

[0065] The continuous unwinding system for battery strip in this embodiment uses two unwinding mechanisms: one for unwinding the strip and the other for storing spare strip. During normal unwinding, a buffer device gradually buffers the strip while simultaneously controlling its uniform feed towards the rear. After the previous roll is unwound, a splicing device connects the end of the previous roll to the beginning of the next roll. During this splicing operation, clamping rollers press the previous roll to control its end position. The splicing device then connects the end of the previous roll to the beginning of the next roll. Simultaneously, because the buffer device holds sufficient strip, it releases the strip during splicing to maintain continuous feeding towards the rear and ensure a constant feed rate, effectively preventing any impact on subsequent processes.

[0066] Specifically, such as Figure 3-4As shown, the unwinding device 10 of this embodiment includes a fixed support end 11 and a movable support end 12. The fixed support end 11 includes a fixed support base 110 that is fixedly installed. A second bearing seat 111 is installed on the fixed support base 110. A mandrel 112 that is rotatably engaged with the mandrel 112 and used for mounting the wound material is installed inside the second bearing seat 111. An unwinding drive assembly for driving the mandrel 111 to rotate is provided on the fixed support base 111. Specifically, the unwinding drive assembly of this embodiment includes an unwinding drive motor 113, and the unwinding drive motor 113 is connected to the mandrel 112 by transmission. Specifically, the unwinding drive motor 113 and the mandrel 112 are connected by a synchronous belt mechanism 114. Of course, in some other embodiments, the unwinding drive motor 113 and the mandrel 112 can also be connected by a gear transmission mechanism or a chain transmission mechanism, which will not be described in detail here.

[0067] The movable support end 12 includes a fixedly installed movable support base 120, on which a roll-changing support mechanism is mounted. Specifically, as shown... Figure 5-8 As shown, the roll-changing support mechanism of this embodiment includes a base assembly and a rotating support assembly. In this embodiment, the base assembly includes a bearing seat 121, on which a rotating shaft 122 is mounted and rotatably engages with the bearing seat 121. The rotating shaft 122 is parallel to the spindle 112. In this embodiment, the rotating support assembly includes a rotating plate 123 and a support assembly. The rotating plate 123 rotates synchronously with the rotating shaft 122. In this embodiment, the support assembly includes a support plate 124 and a first drive assembly. The support plate 124 is mounted on the rotating plate 123 and can move radially along the rotating shaft 122. The first drive assembly is mounted on the rotating plate 124 and is used to drive the support plate 124 to move relative to the rotating plate 123. Specifically, in this embodiment, the rotating plate 123 is provided with a first guide rail 125, on which a first slider 126 is mounted and slidably engages with the first guide rail 125. The support plate 124 is mounted on the first slider 126. The first drive assembly in this embodiment includes a first drive cylinder 127 fixedly mounted on a rotating plate 123, and the piston rod of the first drive cylinder 127 is fixedly connected to a support plate 124. Specifically, the first drive cylinder 127 in this embodiment is a pneumatic cylinder. In other embodiments, the first drive cylinder 127 may also be a hydraulic cylinder or an electric cylinder, which will not be described in detail here. In this embodiment, the radially outward end of the support plate 124 is provided with a groove 128 for cooperating with the mandrel 112. In this embodiment, the groove 128 is an arc-shaped groove adapted to the outer wall of the mandrel 112. Of course, in other embodiments, the groove 128 may also be a V-groove or other structures, which will not be described in detail here.

[0068] In this embodiment, the bearing housing 121 is provided with a locking assembly for locking the vertical support position of the rotating plate 123. Specifically, the locking assembly includes a second drive cylinder 129 fixedly mounted on the bearing housing 121. A locking plug 130 is mounted on the piston rod of the second drive cylinder 129. The rotating plate 123 is provided with a locking hole 131 that mates with the locking plug 130. A locking sleeve 1311 is provided inside the locking hole 131. Figure 6 As shown. When the rotating plate 123 rotates to the vertical support position, the second drive cylinder 129 drives the locking plug 130 to insert into the locking sleeve 1311, which can lock the position of the rotating plate 123 and improve the structural strength of the rotating plate 123 in the vertical position. In this embodiment, the locking plug 130 is provided with a tapered shaft section, and the locking sleeve 1311 is provided with a tapered hole section that cooperates with the tapered shaft section. The tapered shaft section and the tapered hole section can play a role in axial positioning.

[0069] In this embodiment, the roll-changing support mechanism further includes a rotation drive assembly for driving the rotating shaft 122 to rotate in order to adjust the rotational position of the rotating plate 123. For example... Figure 3-4 As shown, the rotation drive assembly of this embodiment includes a rotation drive motor 132, and a transmission shaft 133 is connected to the output shaft of the rotation drive motor 132. The transmission shaft 133 and the rotation shaft 122 are connected by a coupling 134.

[0070] In a preferred embodiment of this invention, the rotating plate 123 is provided with a first limiting plate 135 and a second limiting plate 136, the second limiting plate 136 being located on the radially outward side of the first limiting plate 135, such as... Figure 5-8 As shown. In this embodiment, the support plate 124 is provided with a first contact sensor 137 and a second contact sensor 138. The first contact sensor 137 cooperates with the first limiting plate 135 to detect the first clearance position of the support plate 124 moving radially inward, and the second contact sensor 138 cooperates with the second limiting plate 136 to detect the first support position of the support plate 124 moving radially outward. Specifically, when the support plate 124 is in the first clearance position, the support plate 124 is disengaged from the mandrel 112, and the rotating plate 123 can be driven to rotate to change the roll. When the support plate 124 is in the first support position, the slot 128 on the support plate 124 cooperates with the mandrel 112 and provides support for the mandrel 112.

[0071] like Figure 5-8As shown, in a preferred embodiment of this example, the rotating plate 123 is provided with a third contact sensor 139 and a fourth contact sensor 140; the third contact sensor 139 is used to detect the second clearance position of the rotating plate 123's rotational movement; a side baffle 141 is installed on the base assembly, and the fourth contact sensor 140 is installed on the side baffle 141 to cooperate with the rotating plate 123 to detect the second support position of the rotating plate 123's rotational movement. Specifically, when the rotating plate 123 is in the second clearance position, it indicates that the rotating plate 123 has completely avoided the position space required for changing the roll, avoiding interference with the roll material. When the rotating plate 123 is in the second support position, it indicates that the rotating plate 123 is in the vertical support position.

[0072] In a preferred embodiment of this example, an optocoupler assembly for detecting the rotational movement of the rotating plate 123 to the second support position is provided between the bearing housing 121 and the rotating shaft 122. Specifically, the optocoupler assembly includes an optocoupler sensor 142 mounted on the bearing housing 121 and a sensing plate 143 mounted on the rotating shaft 122. Figure 6 As shown, in this embodiment, there are two optocoupler sensors 142, which correspond to the second clearance position and the second support position of the rotating plate 123, respectively, that is, they can locate the rotation position of the rotating shaft 122.

[0073] In a preferred embodiment of this example, the base assembly is slidably mounted on the movable support 120, and the direction of movement of the base assembly relative to the movable support 120 is parallel to the spindle 112. Specifically, as shown... Figure 3-4 As shown, a second guide rail 144 is installed on the movable support base 120, and a second slider 145 is provided on the second guide rail 144 for sliding cooperation. The base assembly is installed on the second slider 145. In this way, the position of the base assembly on the second guide rail 144 can be adjusted, thereby adjusting the position of the roll changing support mechanism to adapt to the unwinding requirements of rolls with different widths.

[0074] like Figure 9-12 As shown, the tape-connecting device 20 in this embodiment includes a fixed back plate 21, on which a tape-connecting assembly 23 is installed. The tape-connecting assembly 23 has a tape-clamping assembly 24 and a negative pressure suction assembly 22 on both sides.

[0075] like Figure 13-15As shown, in this embodiment, the negative pressure suction assembly 22 includes a double-sided negative pressure plate and a cutting assembly. The double-sided negative pressure plate includes a negative pressure suction frame 221, with first negative pressure plates 222 respectively installed on both sides of the negative pressure suction frame 221. The opposite side of the two first negative pressure plates 222 is designated as a first negative pressure suction surface 223, and a cutting surface 224 is provided on the negative pressure suction frame 221 corresponding to the first negative pressure suction surface 223. In this embodiment, the cutting surface 224 is located below the first negative pressure suction surface 223. The cutting assembly includes a cutting frame 225, with two cutting units respectively installed on the cutting frame 225 corresponding to the two cutting surfaces 224. The cutting unit in this embodiment includes a pressure plate mechanism and a cutting mechanism. The pressure plate mechanism includes a pressure plate 226 for pressing and fixing the strip onto the cutting surface 224 and a pressure plate driving mechanism 227 for driving the pressure plate 226 to move. In this embodiment, the pressure plate driving mechanism 227 is a cylinder. Of course, in other embodiments, the pressure plate drive mechanism 227 may also be a hydraulic cylinder or an electric cylinder, etc., which will not be described in detail here. The cutting mechanism of this embodiment is used for cutting the strip material pressed and fixed on the cutting surface 224 by a cutter 228 and a cutter drive mechanism 229 for driving the cutter 228 to move. In this embodiment, the cutter drive mechanism 229 is a cylinder; however, in other embodiments, the cutter drive mechanism 229 may also be a hydraulic cylinder or an electric cylinder, etc., which will not be described in detail here. In this embodiment, the negative pressure suction frame 221 and the cutting frame 225 are fixedly connected; of course, in other embodiments, the negative pressure suction frame 221 and the cutting frame 225 may also be integrated.

[0076] like Figure 14 As shown, in the preferred embodiment of this example, there are two pressure plates 226, and a slit is provided between the two pressure plates 226. The cutter 228 is aligned with the slit. In this way, the strip between the two pressure plates 226 can be pressed flatter, and the slit when the cutter 228 cuts the strip is flatter.

[0077] like Figure 16-18As shown, the adhesive tape splicing assembly 23 includes an adhesive tape splicing frame 230. Adhesive tape splicing units are respectively located on both sides of the negative pressure suction frame 221 on both sides of the adhesive tape splicing frame 230. The adhesive tape splicing units are used to push the adhesive tape towards the tape material to achieve tape splicing. In this embodiment, the adhesive tape splicing frame 230 and the negative pressure suction frame 221 are slidably coupled along a second direction parallel to the tape transport direction. The adhesive tape splicing frame 230 is provided with a moving drive mechanism 231, which is used to drive the negative pressure suction frame 221 to move relative to the adhesive tape splicing frame 230 along the second direction. In this embodiment, the negative pressure suction frame 221 is provided with a moving slide rail 2211 parallel to the second direction. The moving slide rail 2211 is provided with a moving slider 2212 that slidably engages with it, and the moving slider 2212 is fixedly connected to the adhesive tape splicing frame 230. In this embodiment, the moving drive mechanism 231 is a cylinder mounted on the push adhesive strip frame 230. Of course, in other embodiments, the moving drive mechanism 231 may also be a hydraulic cylinder or an electric cylinder, etc., which will not be described in detail here.

[0078] In this embodiment, the adhesive tape feeding unit includes a tape feeding frame 232 for mounting the tape and a tape feeding plate 233 for pushing the tape toward the negative pressure suction frame 221. The tape feeding frame 232 has a hollow area for mounting the tape, and the tape feeding plate 233 is sized to fit the hollow area and can pass through it. In this embodiment, the tape feeding plate 233 is parallel to the first negative pressure suction surface 223, and the adhesive tape feeding frame 230 is provided with a tape feeding drive mechanism 234 for driving the tape feeding plate 233 to move along a second direction. In this embodiment, the tape feeding drive mechanism 234 employs a servo drive system, which can precisely control the moving distance and position of the tape feeding plate 233.

[0079] In a preferred embodiment of this invention, a second negative pressure plate 235 is installed on the side of the pusher plate 223 facing the first negative pressure attraction surface 223, and the side of the second negative pressure plate 235 facing the first negative pressure attraction surface 223 is designated as the second negative pressure attraction surface 236. By installing the second negative pressure plate 235 on the pusher plate 223, a negative pressure adsorption effect can be generated on the tape during the process of pushing the tape towards the negative pressure attraction frame 221, preventing the tape from falling off the pusher plate 233.

[0080] In a preferred embodiment of this example, the adhesive-push and tape-connecting frame 230 is provided with an installation groove 237 for installing the adhesive-connecting frame 232. The adhesive-push plate 232 is detachably installed in the installation groove 237, which means that the adhesive-connecting frame 232 can be removed to replace the tape, making the operation more convenient.

[0081] In this embodiment, the fixed back plate 21 is provided with a first swing drive mechanism for driving the adhesive-push splicing frame 230 to swing along a first direction perpendicular to the tape transport direction. In this embodiment, the adhesive-push splicing frame 230 and the back plate 21 are in sliding engagement along the first direction. Specifically, as shown... Figure 16-18 As shown, a first swing slide rail 211 is mounted on the back plate 21, and a first swing slider 212 is provided on the first swing slide rail 211 for sliding cooperation with it. The adhesive bonding frame 230 is mounted on the first swing slider 212. The first swing drive mechanism in this embodiment includes a first servo motor 213 mounted on the back plate 21 and a first lead screw 214 that is driven by the first servo motor 213. The adhesive bonding frame 230 is threadedly engaged with the first lead screw 214 through a nut seat 238. In this embodiment, the first servo motor 213 and the first lead screw 214 are connected by a synchronous belt mechanism. Of course, in some other embodiments, the first servo motor 213 and the first lead screw 214 can also be connected by a gear transmission mechanism, a chain transmission mechanism, etc., which will not be described in detail here. In order to accurately control the position of the adhesive bonding frame 230 swinging along the first direction, a first optical coupler sensor 215 for detecting the position of the adhesive bonding frame 230 is mounted on the back plate 21, and a first light-blocking plate 216 that cooperates with the first optical coupler sensor 215 is provided on the adhesive bonding frame 230. Specifically, multiple first optocoupler sensors 215 are spaced apart to achieve accurate detection of more than 230 different swing positions of the adhesive bonding frame 230.

[0082] like Figure 19-21 As shown, in this embodiment, the clamping assembly 24 includes a clamping frame 240, on which a clamping roller assembly is mounted. The clamping roller assembly includes two clamping rollers 241, a roller gap adjustment mechanism, and a clamping drive mechanism. The roller gap adjustment mechanism is used to adjust the roller gap between the two clamping rollers 241 to clamp the strip, and the clamping drive mechanism is used to control the conveying distance of the clamped strip.

[0083] In this embodiment, the roll gap adjustment mechanism includes a roll gap adjustment unit for driving the corresponding clamping roller 241 to move in a first direction. One or two roll gap adjustment units are provided; when there is one roll gap adjustment unit, one clamping roller 241 is fixedly mounted on the clamping frame 240, and the other clamping roller 241 is drive-connected to the roll gap adjustment unit; when there are two roll gap adjustment units, the two clamping rollers 241 are drive-connected to the two roll gap adjustment units respectively. In this embodiment, two roll gap adjustment units are provided. Specifically, when the clamping roller 241 is drive-connected to the roll gap adjustment unit, the clamping roller 241 is mounted on the roller seat 242, and the roller seat 242 and the clamping frame 240 slide in a second direction. The roll gap adjustment unit includes a roll gap adjustment drive mechanism 243 mounted on the clamping frame 240 and used to drive the roller seat 242 to move in the second direction. In this embodiment, an adjusting rail 244 is mounted on the clamping frame 240, and an adjusting slider 245 that slides on the adjusting rail 244 is mounted thereon. The roller seat 242 is mounted on the adjusting slider 245. In this embodiment, the roller gap adjusting drive mechanism 243 is a cylinder. Of course, in some other embodiments, the roller gap adjusting drive mechanism 243 can also be a hydraulic cylinder or an electric cylinder, which will not be described in detail here.

[0084] In this embodiment, the clamping drive mechanism includes a clamping drive motor 246, which is connected to one of the clamping rollers 241. In this embodiment, the clamping drive motor 246 is a servo motor, and the output shaft of the clamping drive motor 246 is connected to the corresponding clamping roller 241 via a coupling.

[0085] like Figure 11-12As shown, in this embodiment, the back plate 21 is provided with a second swing drive mechanism for driving the clamping frame 240 to swing along a first direction. Specifically, the clamping frame 240 and the back plate 21 are slidably engaged along the first direction. The back plate 21 is provided with a second swing track 2171 parallel to the first direction, and a second swing slider 2172 is provided on the second swing track 2171 and slidably engaged therewith. The clamping frame 240 is mounted on the second swing slider 2172. The second swing drive mechanism in this embodiment includes a second servo motor 2181 mounted on the back plate 21 and a second lead screw 2182 that is driven by the second servo motor 2181. The clamping frame 240 is threadedly engaged with the second lead screw 2182 through a nut seat 247. In this embodiment, the second servo motor 2181 and the second lead screw 2182 are connected by a synchronous belt mechanism. Of course, in some other embodiments, the second servo motor 2181 and the second lead screw 2182 can also be connected by a gear transmission mechanism, a chain transmission mechanism, etc., which will not be described in detail here. To precisely control the swing position of the clamping frame 240 along the first direction, a second optical coupler sensor 2191 for detecting the position of the clamping frame 240 is installed on the back plate 21, and a second light-blocking plate 2192 that cooperates with the second optical coupler sensor 2191 is provided on the clamping frame 240. Specifically, multiple second optical couplers 2191 are arranged at intervals to achieve precise detection of multiple different swing positions of the clamping frame 240.

[0086] In this embodiment, the back plate 21 is provided with two guide roller groups 25 for guiding the two strips into the negative pressure suction frame 221 on both sides. The guide roller groups 25 are located on the side of the pressure cutting frame 225 facing away from the push-bond frame 230. In this embodiment, the clamping frame 240 is also provided with a guide roller group 26 for guiding the strips. The guide roller group 26 is located on the side of the clamping roller group facing away from the push-bond frame 230.

[0087] The tape splicing process of the splicing device 20 in this embodiment is as follows: Assume that the two rolls of tape are a first tape and a second tape, wherein the first tape is located on the first side of the negative pressure attraction frame 221 and is in an unwinding state, and the second tape is located on the second side of the negative pressure attraction frame 221 and is adsorbed onto the first negative pressure attraction surface 223 on the second side. The negative pressure attraction frame 221 is located at an unwinding position offset from the tape splicing assembly 23; when the first tape is unwound and splicing is required:

[0088] After the second strip is pressed and fixed on the second side cutting surface 224 by the pressure plate mechanism on the second side, the negative pressure suction frame 221 is driven by the moving drive mechanism to move to the strip splicing position between the two push adhesive splicing units.

[0089] The adhesive tape pusher unit located on the second side pushes the tape toward the second strip and attaches the tape to the upper end of the second strip, with part of the tape protruding from the upper end of the second strip; then the first swing drive mechanism drives the adhesive tape pusher frame 230 to swing toward the first side by a set distance, so that the first strip is attached to the first negative pressure suction surface 223 on the second side.

[0090] After the pressure plate mechanism on the first side presses and fixes the first strip onto the first side cutting surface 224, the cutting mechanism cuts the first strip. After the roll gap adjustment mechanism adjusts the roll gap between the two clamping rollers 241 and clamps the first strip, the clamping drive mechanism adjusts the conveying distance of the first strip to control the tail position of the first strip. The moving drive mechanism drives the negative pressure suction frame 221 to move to the unwinding position.

[0091] The first swing drive mechanism and the second swing drive mechanism respectively drive the push adhesive splicing frame 230 and the clamping frame 240 to swing toward the second side by a set distance, so that the tail end of the first strip and the head end of the second strip are connected.

[0092] The adhesive tape pusher unit located on the first side pushes the tape toward the first tape and attaches the tape between the head end of the first tape and the tail end of the second tape. At the same time, the exposed portion of the tape attached to the upper end of the second tape also adheres to the tail end of the first tape.

[0093] The adhesive feeding and splicing unit located on the first and second sides is reset, the roller gap adjustment mechanism is reset, and the adhesive feeding and splicing frame 230 and the clamping frame 240 are reset.

[0094] During the next splicing, the "first" and "second" positions are simply interchanged; this process is repeated to achieve continuous splicing. In summary, the splicing device 20 of this embodiment can precisely control the positions of the head end of the first strip and the tail end of the second strip, thereby enabling the head end of the first strip and the tail end of the second strip to be quickly connected and aligned. At the same time, by applying adhesive to both sides of the head end of the first strip and the tail end of the second strip, the connection strength of the splice can be effectively enhanced.

[0095] Note: The “strip” mentioned in this embodiment includes various strips used in the battery production process.

[0096] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A battery ribbon non-stop continuous unwinding system, characterized in that: The utility model relates to a kind of strip winding and unwinding device, including: The unwinding device is used for strip unwinding; The strip connecting device is used for strip connecting; The buffer device is used for buffering strip and releasing strip during strip connecting; The unwinding device includes two unwinding mechanisms arranged side by side;The feeding end of the strip connecting device is provided with two guide roller groups corresponding to the two unwinding mechanisms, and a first guide mechanism for guiding the strip is arranged between the unwinding mechanism and the corresponding guide roller group; The discharge end of the strip connecting device is provided with a clamping roller group for clamping the strip, and a second guide mechanism for guiding the strip is arranged between the clamping roller group and the feeding end of the buffer device; The discharge end of the buffer device is provided with a third guide mechanism for guiding the strip.

2. The battery ribbon non-stop continuous unwinding system of claim 1, wherein: A tensioning assembly for controlling the tension of the strip is arranged between the unwinding mechanism and the corresponding guide roller group.

3. The battery ribbon non-stop continuous unwinding system of claim 1, wherein: A first process deviation correction assembly for correcting the deviation of the strip is arranged between the clamping roller group and the feeding end of the buffer device.

4. The battery ribbon non-stop continuous unwinding system of claim 3, wherein: A first tension control assembly for controlling the tension of the strip is arranged between the clamping roller group and the first process deviation correction assembly;The first tension control assembly includes a first swing arm assembly for adjusting the tension of the strip and a first tension sensor for detecting the tension of the strip.

5. The battery ribbon non-stop continuous unwinding system of claim 4, wherein: A dust removal assembly for removing dust from the strip is arranged between the clamping roller group and the feeding end of the buffer device;The dust removal assembly includes a dust removal device and at least one magnetic bar arranged along the direction of strip transmission;The dust removal device is arranged between the clamping roller group and the first tension control assembly.

6. The battery ribbon non-stop continuous unwinding system of claim 1, wherein: A second process deviation correction assembly for correcting the deviation of the strip is arranged at the discharge end of the buffer device.

7. The battery ribbon non-stop continuous unwinding system of claim 6, wherein: A second tension control assembly is arranged between the discharge end of the buffer device and the second process deviation correction assembly;The second tension control assembly includes a second swing arm assembly for adjusting the tension of the strip and a second tension sensor for detecting the tension of the strip.

8. The battery ribbon non-stop continuous unwinding system of claim 7, wherein: A straightening assembly is arranged between the second tension control assembly and the second process deviation correction assembly.

9. The battery ribbon non-stop continuous unwinding system of claim 8, wherein: A color mark detection assembly is arranged between the second tension control assembly and the straightening assembly.

10. The battery ribbon non-stop continuous unwinding system of claim 6, wherein: An encoder roller group for measuring the length of strip transmission is arranged at the discharge side of the second process deviation correction assembly.

11. The battery ribbon non-stop continuous unwinding system of claim 1, wherein: At least one static electricity removal assembly is also arranged at the discharge end of the buffer device, which is spaced apart along the direction of strip transmission.

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