Roll changing device and winding equipment

Abstract

The utility model relates to a roll changing device and winding equipment. The roll changing device comprises an unwinding assembly, the unwinding assembly comprises two unwinding mechanisms which are alternately used as a working unwinding mechanism and a standby unwinding mechanism respectively, the working unwinding mechanism is used for loading a working material roll and unwinding and outputting a working material belt, and the standby unwinding mechanism is used for loading a standby material roll; the roll changing assembly comprises a swing arm, a roller passing mechanism and a cut-off mechanism, and the roller passing mechanism is arranged on the swing arm and located between the working material roll and the standby material roll; the passing roller mechanism is used for allowing a working material belt to pass through and can be controlled to rotate relative to the swing arm, so that the passing working material belt is wound on the side, facing the standby material coil, of the passing roller mechanism; the cutting-off mechanism is used for cutting off the working material belt between the roller passing mechanism and the working material coil; and the swing arm controllably drives the roller passing mechanism to swing towards the standby material roll, so that the working material belt wound on the roller passing mechanism is bonded with the starting end of the material belt of the standby material roll.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing equipment, and specifically to a roll changing device and a winding device. Background Art

[0002] The battery cell is an important component of lithium-ion batteries. Winding equipment is typically used to wind strips of material, including anode sheets, separators, and cathode sheets. The strips are typically supplied in a roll-to-roll unwinding process. Therefore, when a roll is nearly exhausted, it must be replaced with a new one. During this replacement process, a splicing process is performed, whereby the unwound strip (the working strip) is bonded to the new strip (the spare strip) unwound from the new roll (the spare roll) using adhesive tape.

[0003] However, the automatic roll changing device in the prior art has a complex structure and occupies a large space, which cannot meet the requirements of compactness and miniaturization of the equipment. Utility Model Content

[0004] Based on this, it is necessary to provide a roll changing device and winding equipment with a relatively simple structure, high space utilization, and the ability to meet the needs of compactness and miniaturization of equipment to address the above problems.

[0005] A roll changing device, comprising:

[0006] An unwinding assembly, comprising two unwinding mechanisms that alternately serve as a working unwinding mechanism and a standby unwinding mechanism, the working unwinding mechanism being used to load a working material roll and unwind and output the working material tape, and the standby unwinding mechanism being used to load a standby material roll; and

[0007] The roll-changing assembly includes a swing arm and a roller mechanism, wherein the roller mechanism is disposed on the swing arm and is located between the working material roll and the standby material roll; the roller mechanism is used to allow the working material strip to pass through and can be controlled to rotate relative to the swing arm to wrap the passing working material strip around the side of the roller mechanism facing the standby material roll;

[0008] The swing arm can controllably drive the roller mechanism to swing toward the spare material roll, so as to bond the working material strip wound on the roller mechanism and the starting end of the material strip of the spare material roll to each other.

[0009] In some embodiments, the roll changing assembly further includes a mounting seat, a first rotating shaft and a first rotating drive member, the first rotating shaft is rotatably connected to the mounting seat, one end of the swing arm is fixedly connected to the first rotating shaft, the roller mechanism is rotatably connected to the other end of the swing arm, the first rotating drive member is mounted on the mounting seat, and the driving end of the first rotating drive member is connected to the first rotating shaft.

[0010] In some embodiments, the roll changing assembly further comprises a driving gear mounted on a driving end of the first rotating drive member and a driven gear mounted on the first rotating shaft, the driving gear meshing with the driven gear and being arranged sequentially along a first preset direction;

[0011] The working unwinding mechanism and the standby unwinding mechanism are arranged in sequence along a second preset direction, and the first preset direction intersects with the second preset direction.

[0012] In some embodiments, the roller mechanism includes a rotating disk and at least two first rollers, the rotating disk is rotatably connected to the swing arm, each of the first rollers is mounted on the rotating disk and is located between the standby material roll and the working material roll, and the working material strip unwound and output by the working unwinding mechanism passes between each of the first rollers.

[0013] In some embodiments, there are two first rollers, and a belt passage for the working material belt to pass through is formed between the two first rollers.

[0014] In some embodiments, the roll changing assembly further includes a second rotating shaft and a second rotating drive member, the second rotating shaft is rotatably connected to the swing arm, the rotating disk is mounted on the second rotating shaft, the second rotating drive member is mounted on the swing arm, and the driving end of the second rotating drive member is connected to the second rotating shaft.

[0015] In some embodiments, the roll changing assembly further comprises a driving wheel, a driven wheel and a transmission belt, wherein the driving wheel is mounted on the driving end of the second rotating drive member, the driven wheel is mounted on the second rotating shaft, and the transmission belt is sleeved between the driving wheel and the driven wheel;

[0016] The driving wheel and the driven wheel are arranged in sequence along a first preset direction, the working unwinding mechanism and the standby unwinding mechanism are arranged in sequence along a second preset direction, and the first preset direction intersects with the second preset direction.

[0017] In some embodiments, the roll changing assembly further includes a cutting mechanism, which is used to cut the working material strip between the passing roller mechanism and the working material roll.

[0018] In some embodiments, the cutting mechanism includes a fixed seat, a cutter seat, a cutter and a cutting drive member, the cutter seat is movably connected to the fixed seat, the cutter is mounted on the cutter seat, the cutting drive member is mounted on the fixed seat, and the driving end of the cutting drive member is connected to the cutter seat.

[0019] In some embodiments, the cutting mechanism further includes two second rollers mounted on the fixed seat, and when the swing arm drives the roller mechanism to swing toward the standby roll, the working material strip between the working roll and the roller mechanism can be driven to pass through at least one of the second rollers;

[0020] Under the driving action of the cutting drive member, the cutter seat can drive the cutter to extend from between the two second rollers and cut the working material strip passing through.

[0021] A winding device comprises the roll changing device as described in any of the above embodiments.

[0022] During actual use, the above-mentioned roll-changing device and winding equipment utilize the working unwinding mechanism to unwind the working material tape downstream and load a new material tape (i.e., the spare material tape) onto the spare unwinding mechanism. When the working material tape on the working unwinding mechanism is almost used up, the working unwinding mechanism stops unwinding, and the over-roll mechanism rotates relative to the swing arm until the working material tape is wound around the side of the over-roll mechanism facing the spare material tape. The swing arm drives the over-roll mechanism to swing toward the spare material tape on the spare unwinding mechanism until the working material tape wound around the over-roll mechanism abuts against the starting end of the tape on the spare material tape, causing the working material tape and the starting end of the tape on the spare material tape to adhere to each other. Then, the cutting mechanism cuts the working material tape at a position between the working material tape on the working unwinding mechanism and the over-roll mechanism, separating the working material tape on the over-roll mechanism from the working material tape. Then, the swing arm swings back to its initial position, and at the same time, the over-roll mechanism rotates back to its initial state relative to the swing arm. At this time, the standby unwinding mechanism and the working unwinding mechanism switch with each other, that is, the previous working unwinding mechanism switches to the standby unwinding mechanism, and the previous standby unwinding mechanism switches to the working unwinding mechanism. The current working unwinding mechanism continues to unwind and output the working material tape downstream, and the new material roll (that is, the standby material roll) is replaced on the current standby unwinding mechanism to prepare for the next switch.

[0023] Compared with the prior art, the roll changing device in the present application utilizes a swing arm to drive the roller mechanism to swing between the working material roll and the spare material roll, which can minimize the space occupied between the two unwinding mechanisms, so that the two unwinding mechanisms can be as close to each other as possible, thereby making the equipment structure more compact, greatly reducing the space required for the roll changing device, and being able to better adapt to the needs of compactness and miniaturization of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figures 1 to 5 Schematic diagram of the roll changing process of the roll changing device in one embodiment of the present application (the right side is the working unwinding mechanism, and the left side is the standby unwinding mechanism);

[0025] Figures 6 to 10Schematic diagram of the roll changing process of the roll changing device in the embodiment of the present application (the left side is the working unwinding mechanism, and the right side is the standby unwinding mechanism);

[0026] Figure 11 for Figure 1 A schematic structural diagram of a roll changing assembly of a roll changing device is shown;

[0027] Figure 12 for Figure 11 A side view of the roll changing assembly is shown. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0031] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0032] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0034] The present application provides a winding device, including a roll-changing device and a winding device. The roll-changing device is used to unwind a working material strip to the winding device, and the winding device is used to wind the working material strip. It should be noted that the working material strip can be a diaphragm, and of course, can also be other types of material strips, without special limitation herein.

[0035] See also Figure 1 In the embodiment of the present application, the roll changing device includes an unwinding assembly 10 and a roll changing assembly 20. The unwinding assembly 10 includes two unwinding mechanisms, which alternately serve as a working unwinding mechanism 10a and a standby unwinding mechanism 10b. The working unwinding mechanism 10a is used to load a working material roll A1 and drive the working material roll A1 to rotate to unwind and output a working material strip B downstream. When the working unwinding mechanism 10a unwinds and outputs the working material strip B downstream, the standby unwinding mechanism 10B is in a stopped state. At this time, a new material roll can be loaded onto the standby unwinding mechanism 10b. The new material roll on the standby unwinding mechanism 10b is the standby material roll A2.

[0036] The working unwinding mechanism 10a refers to the unwinding mechanism that is unwinding and outputting the working material strip B, and the standby unwinding mechanism 10b refers to the unwinding mechanism that is waiting to perform the unwinding operation. Figure 1In the embodiment shown, the unwinding mechanism on the right is unwinding and outputting the material tape downstream. At this time, the unwinding mechanism on the right is the working unwinding mechanism 10a, and the material roll on the working unwinding mechanism 10a is the working material roll A1. The material tape unwound and output by the working unwinding mechanism 10a is the working material tape B. The unwinding mechanism on the left is the standby unwinding mechanism 10b, and the material roll on the standby unwinding mechanism 10b is the standby material roll A2.

[0037] exist Figure 6 In the embodiment shown, the unwinding mechanism on the left is unwinding and outputting the material tape downstream. At this time, the unwinding mechanism on the left is the working unwinding mechanism 10a, and the material roll on the working unwinding mechanism 10a is the working material roll A1. The material tape unwound and output by the working unwinding mechanism 10a is the working material tape B. The unwinding mechanism on the right is the standby unwinding mechanism 10b, and the material roll on the standby unwinding mechanism 10b is the standby material roll A2.

[0038] The reel-changing assembly 20 is used to cut the working material web B unwound by the working unwinding mechanism 10a and bond the cut working material web B to the starting end of the web on the backup reel A2, thereby connecting the working material web B to the starting end of the web on the backup reel A2 (i.e., splicing the webs). After the splicing is completed, the backup unwinding mechanism 10b switches to the working unwinding mechanism 10a, continuing to unwind the working material web B downstream, while the working unwinding mechanism 10a switches to the backup unwinding mechanism 10b.

[0039] In some embodiments, the roll-changing assembly 20 includes a swing arm 21, a roller mechanism 23, and a cutting mechanism 25. The roller mechanism 23 is mounted on the swing arm 21 and positioned between the working roll A1 on the working unwinding mechanism 10a and the standby roll A2 on the standby unwinding mechanism 10b. The roller mechanism 23 allows the working material B unwound by the working unwinding mechanism 10a to pass through. The roller mechanism 23 can be controlled to rotate relative to the swing arm 21 to wrap the passing working material B around the side of the roller mechanism 23 facing the standby roll A2 on the standby unwinding mechanism 10b. The cutting mechanism 25 is used to cut the working material B between the roller mechanism 23 and the working roll A1 on the working unwinding mechanism 10a. The swing arm 21 can controllably drive the roller mechanism 23 to swing toward the standby roll A2, so that the working material B wrapped around the roller mechanism 23 abuts the starting end of the material on the standby roll A2 on the standby unwinding mechanism 10b. Since the starting end of the material tape of the spare material roll A2 is pasted with double-sided tape, when the working material tape B wound on the roller mechanism 23 contacts the starting end of the material tape on the spare material roll A2 on the spare unwinding mechanism 10b, the two can be adhered to each other through the double-sided tape, thereby realizing the connection between the working material tape B and the starting end of the material tape on the spare material roll A2 (i.e., splicing the tapes).

[0040] Thus, in actual use, the working material roll B is unwound and outputted downstream by the working unwinding mechanism 10a, and a new roll (i.e., the spare roll A2) is loaded onto the spare unwinding mechanism 10b. When the working material roll A1 on the working unwinding mechanism 10a is almost used up, the working unwinding mechanism 10a stops unwinding, and the roller mechanism 23 rotates relative to the swing arm 21 until the working material roll B is wound around the side of the roller mechanism 23 facing the spare roll A2 (see FIG. Figure 1 and Figure 2 The swing arm 21 drives the roller mechanism 23 to swing toward the spare material roll A2 on the spare unwinding mechanism 10b until the working material strip B wound on the roller mechanism 23 abuts against the starting end of the material strip on the spare material roll A2, so that the working material strip B and the starting end of the material strip on the spare material roll A2 are bonded to each other (see Figure 3 Then, the cutting mechanism 25 cuts the working material strip B from the position between the working material roll A1 on the working unwinding mechanism 10a and the roller mechanism 23, so that the working material strip B on the roller mechanism 23 is separated from the working material roll A1 (see Figure 4 Then, the swing arm 21 swings back to the initial position, and at the same time, the roller mechanism 23 rotates back to the initial state relative to the swing arm 21 (see Figure 5 At this time, the standby unwinding mechanism 10b and the working unwinding mechanism 10a switch with each other, that is, the previous working unwinding mechanism 10a switches to the standby unwinding mechanism 10b, and the previous standby unwinding mechanism 10b switches to the working unwinding mechanism 10a. The current working unwinding mechanism 10a continues to unwind and output the working material strip B downstream, and the current standby unwinding mechanism 10b replaces the new material roll (that is, the standby material roll A2) to prepare for the next switch.

[0041] In the prior art, the mechanism for splicing the tape moves linearly between the working roll A1 and the standby roll A2. Therefore, components such as linear guide rails extending along the arrangement direction of the working roll A1 and the standby roll A2 are required. This results in a relatively large space being occupied between the two unwinding mechanisms, resulting in a relatively large distance between the two unwinding mechanisms and a less compact structure. Compared to the prior art, the roll changing device of the present application utilizes a swing arm 21 to drive a roller mechanism 23 to swing between the working roll A1 and the standby roll A2, thereby minimizing the space occupied between the two unwinding mechanisms and allowing the two unwinding mechanisms to be as close to each other as possible, thereby making the device structure more compact, significantly reducing the space required for the roll changing device, and better meeting the requirements for compact and miniaturized equipment.

[0042] It should be noted that the cutting mechanism 25 is not required. In other embodiments, the reel changing assembly 20 may not be provided with the cutting mechanism 25. In embodiments without the cutting mechanism 25, after the roller mechanism 23 brings the working material strip B into contact with the backup material strip A2 and bonds them together, the working material strip B can be manually cut between the roller mechanism 23 and the working material strip A1. Of course, after the roller mechanism 23 brings the working material strip B into contact with the backup material strip A2 and bonds them together, the working material strip B can be left uncut and the working material strip B on the working material strip A1 can be continued to be unwound until the working material strip B on the working material strip A1 is completely unwound and separated from the barrel of the working material strip A1.

[0043] Specifically in the embodiment, the spare unwinding mechanism 10b drives the spare material roll A2 thereon to rotate until the starting end of the material tape on the spare material roll A2 reaches a preset position, which is the position of the spare material roll A2 toward the roller mechanism 23, thereby ensuring that when the swing arm 21 drives the roller mechanism 23 to swing toward the spare material roll A2, the roller mechanism 23 can abut against the preset position on the spare material roll A2, thereby ensuring that the working material tape B on the roller mechanism 23 can accurately contact and bond with the starting end of the material tape on the spare material roll A2.

[0044] Furthermore, the reel-changing device also includes a visual inspection component 30 for detecting the position of the starting end of the material strip of the standby material roll A2 on the standby unwinding mechanism 10b, thereby ensuring that the starting end of the material strip on the standby material roll A2 can be accurately rotated to the preset position during each reel change. It should be noted that there are two visual inspection components 30, and the two visual inspection components 30 are arranged in a one-to-one correspondence with the two unwinding mechanisms. Therefore, when any unwinding mechanism is the standby unwinding mechanism 10b, a corresponding visual inspection component 30 can detect the position of the starting end of the material strip of the standby material roll A2 on it.

[0045] See Figure 11 and Figure 12 In some embodiments, the roll changing assembly 20 further includes a mounting seat 27, a first rotating shaft 280, and a first rotating driving member 281. The first rotating shaft 280 is rotatably connected to the mounting seat 27 about its own axis. The first rotating driving member 281 is mounted on the mounting seat 27, and the driving end of the first rotating driving member 281 is connected to the first rotating shaft 280, so that the first rotating driving member 281 can drive the first rotating shaft 280 to rotate about its own axis relative to the mounting seat 27.

[0046] One end of the swing arm 21 is fixedly connected to the first rotating shaft 280, so that the first rotating shaft 280 can drive the swing arm 21 to swing about the axis of the first rotating shaft 280. The roller mechanism 23 is rotatably connected to the other end of the swing arm 21, so that the swing arm 21 can drive the roller mechanism 23 to swing between the standby material roll A2 on the standby unwinding mechanism 10b and the working material roll A1 on the working unwinding mechanism 10a. In this way, when the roller mechanism 23 needs to swing toward the standby material roll A2 on the standby unwinding mechanism 10b, the first rotating drive member 281 drives the first rotating shaft 280 to rotate, thereby driving the swing arm 21 and the roller mechanism 23 on the swing arm 21 to swing toward the standby material roll A2 until the working material roll B wound on the roller mechanism 23 and the starting end of the material roll on the standby material roll A2 adhere to each other. Optionally, the first rotating drive member 281 can be a motor.

[0047] Furthermore, the roll changing assembly 20 also includes a driving gear 282 and a driven gear 283. The driving gear 282 is mounted on the driving end of the first rotating drive member 281, so that the first rotating drive member 281 can drive the driving gear 282 to rotate. The driven gear 283 is mounted on the first rotating shaft 280, so that the driven gear 283 can rotate synchronously with the first rotating shaft 280. The driving gear 282 and the driven gear 283 are meshed, so that when the first rotating drive member 281 drives the driving gear 282 to rotate, the driving gear 282 can drive the driven gear 283 to rotate, and the driven gear 283 in turn drives the first rotating shaft 280 to rotate. The first rotating shaft 280 in turn drives the swing arm 21 to swing, and the swing arm 21 in turn drives the roller mechanism 23 thereon to swing between the working roll A1 and the standby roll A2.

[0048] Furthermore, the driving gear 282 and the driven gear 283 are arranged in sequence along a first preset direction X1, and the working unwinding mechanism 10a and the standby unwinding mechanism 10b are arranged in sequence along a second preset direction X2, and the first preset direction X1 intersects with the second preset direction X2. In this way, since the driving gear 282 and the driven gear 283 are arranged in sequence along the first preset direction X1 intersecting with the second preset direction X2, the driving gear 282 and the driven gear 283 occupy as little space as possible between the working unwinding mechanism 10a and the standby unwinding mechanism 10b, further allowing the two unwinding mechanisms (i.e., the working unwinding mechanism 10a and the standby unwinding mechanism 10b) to be closer along the second preset direction X2, making the structure more compact and further improving space utilization. Preferably, the first preset direction X1 is perpendicular to the second preset direction X2.

[0049] In the embodiment of the present application, the roller mechanism 23 includes a rotating disk 231 and at least two first rollers 232. The rotating disk 231 is rotatably connected to the swing arm 21. Each first roller 232 is mounted on the rotating disk 231 and is located between the standby material roll A2 on the standby unwinding mechanism 10b and the working material roll A1 on the working unwinding mechanism 10a. The working material strip B unwound and output by the working unwinding mechanism 10a passes between each first roller 232. In this way, when the rotating disk 231 rotates, it can drive each first roller 232 to rotate together until the working material strip B is driven to wrap around the side of each first roller 232 facing the standby material roll A2, ensuring that when the swing arm 21 drives the corresponding first roller 232 to abut against the standby material roll A2, the working material strip B can contact and bond with the starting end of the material strip on the standby material roll A2.

[0050] Optionally, there are two first rollers 232, and a belt passage is formed between the two first rollers 232 for the working material strip B to pass through. In this way, when there is no need to change the roll, the working material strip B unwound by the working unwinding mechanism 10a passes through the belt passage between the two first rollers 232 and continues to be transported downstream. When it is necessary to change the roll, the rotary disk 231 drives the two first rollers 232 to rotate until the working material strip B is wound around the two first rollers 232, ensuring that at this time, at least one first roller 232 facing the spare roll A2 is wound with the working material strip B, so that when the first roller 232 facing the spare roll A2 abuts the spare roll A2 under the drive of the swing arm 21, the working material strip B on the first roller 232 and the starting end of the material strip on the spare roll A2 adhere to each other.

[0051] Specific to Figures 1 to 5 In the embodiment shown, the standby roll A2 is located on the left side of the two first rollers 232, and the working roll A1 is located on the right side of the two first rollers 232. When the roll needs to be changed, the rotating disk 231 rotates 180 degrees clockwise so that the working roll B is wound around the two first rollers 232 (see FIG. Figure 1 and Figure 2 The swing arm 21 drives the two first rollers 232 to swing to the left until the first roller 232 on the left side contacts the spare roll A2, so that the working material strip B wound on the first roller 232 on the left side contacts the starting end of the material strip on the spare roll A2 and adheres to each other (see Figure 3 Then, the cutting mechanism 25 cuts the working material strip B, the rotating disk 231 rotates 180° counterclockwise and resets, and the swing arm 21 drives the two first rollers 232 to swing to the right and reset (see Figure 4 and Figure 5At this time, the unwinding mechanism on the left is switched to the working unwinding mechanism 10a, and continues to unwind and output the working material strip B downstream. The unwinding mechanism on the right is replaced with a new material roll (i.e., the spare material roll A2) and switched to the spare unwinding mechanism 10b.

[0052] Specific to Figures 6 to 10 In the embodiment shown, the standby roll A2 is located on the right side of the two first rollers 232, and the working roll A1 is located on the left side of the two first rollers 232. When the roll needs to be changed, the rotating disk 231 rotates 180 degrees counterclockwise so that the working roll B is wound around the two first rollers 232 (see FIG. Figure 6 and Figure 7 The swing arm 21 drives the two first rollers 232 to swing to the right until the first roller 232 on the right side contacts the spare roll A2, so that the working material strip B wound on the first roller 232 on the right side contacts the starting end of the material strip on the spare roll A2 and adheres to each other (see Figure 8 Then, the cutting mechanism 25 cuts the working material strip B, the rotating disk 231 rotates 180° clockwise and resets, and the swing arm 21 drives the two first rollers 232 to swing to the left and reset (see Figure 9 and Figure 10 At this time, the unwinding mechanism on the right is switched to the working unwinding mechanism 10a, and continues to unwind and output the working material strip B downstream. The unwinding mechanism on the left is replaced with a new material roll (i.e., the spare material roll A2) and switched to the spare unwinding mechanism 10b.

[0053] Of course, the number of the first rollers 232 is not limited to two, and can also be three, four or more, as long as it can drive the working material strip B and the starting ends of the material strips on the spare material roll A2 to adhere to each other. This is not limited here.

[0054] Please continue to see Figure 11 and Figure 12 Specifically, in the embodiment, the roll changing assembly 20 further includes a second rotating shaft (not shown) and a second rotating drive member 261. The second rotating shaft is rotatably connected to the swing arm 21, and the second rotating drive member 261 is mounted on the swing arm 21. The driving end of the second rotating drive member 261 is connected to the second rotating shaft, so that the second rotating drive member 261 can drive the second rotating shaft to rotate around its own axis relative to the swing arm 21. The rotating disk 231 is mounted on the second rotating shaft, so that the second rotating shaft can drive the rotating disk 231 to rotate together, and then drive the first rollers 232 on the rotating disk 231 to rotate together. Optionally, the second rotating drive member 261 can be a motor.

[0055] Furthermore, the roll changing assembly 20 also includes a driving wheel 262, a driven wheel 263, and a transmission belt 264. The driving wheel 262 is mounted on the driving end of the second rotary drive member 261, so that the second rotary drive member 261 can drive the driving wheel 262 to rotate. The driven wheel 263 is mounted on the second rotating shaft, so that the second rotating shaft can rotate together with the driven wheel 263. The transmission belt 264 is sleeved between the driving wheel 262 and the driven wheel 263. When the second rotary drive member 261 drives the driving wheel 262 to rotate, the driving wheel 262 drives the driven wheel 263 to rotate via the transmission belt 264. The driven wheel 263 then drives the second rotating shaft to rotate. The second rotating shaft then drives the rotating disk 231 to rotate. The rotating disk 231 then drives each of the first rollers 232 thereon to rotate together.

[0056] Furthermore, the driving wheel 262 and the driven wheel 263 are arranged in sequence along the first preset direction X1. The working unwinding mechanism 10a and the standby unwinding mechanism 10b are arranged in sequence along the second preset direction X2. The first preset direction X1 intersects with the second preset direction X2. In this way, since the driving wheel 262 and the driven wheel 263 are arranged in sequence along the first preset direction X1 intersecting with the second preset direction X2, the driving wheel 262 and the driven wheel 263 occupy as little space as possible between the working unwinding mechanism 10a and the standby unwinding mechanism 10b, further enabling the two unwinding mechanisms to be closer along the second preset direction X2, making the structure more compact, and further improving space utilization. Preferably, the first preset direction X1 is perpendicular to the second preset direction X2.

[0057] In an embodiment of the present application, the cutting mechanism 25 includes a fixed seat 253, a cutter seat 254, a cutter 252, and a cutting drive 255. The fixed seat 253 is fixedly connected to the mounting seat 27, and the cutter seat 254 is movably connected to the fixed seat 253. The cutter 252 is mounted on the cutter seat 254 so as to move with the cutter seat 254. The cutting drive 255 is mounted on the fixed seat 253, and the driving end of the cutting drive 255 is connected to the cutter seat 254, so that the cutting drive 255 can drive the cutter seat 254 to move relative to the fixed seat 253. In this way, when it is necessary to cut the working material strip B, the cutting drive 255 drives the cutter seat 254 to move relative to the fixed seat 253, so that the cutter seat 254 drives the cutter 252 to move closer to the working material strip B until the working material strip B is cut. After the working material strip B is cut, the cutting drive 255 drives the cutter seat 254 to move in the opposite direction and reset, thereby driving the cutter 252 to reset. Optionally, the cutting drive 255 can be a cylinder, and the cutter 252 can be a hot cutter 252.

[0058] Optionally, a slide rail B1 is mounted on the fixed base 253, and a slider B2 is mounted on the cutter base 254. The slider B2 slides on the slide rail B1, thereby using the slider B2 and the slide rail B1 to guide the movement of the cutter base 254 relative to the fixed base 253, so that the cutter base 254 drives the cutter 252 to cut the working material strip B more accurately and stably.

[0059] Furthermore, the cutting mechanism 25 includes two second rollers 251 mounted on a fixed seat 253. When the swing arm 21 drives the roller mechanism 23 to swing toward the standby roll A2, it can drive the working material B between the working roll A1 on the working unwinding mechanism 10a and the roller mechanism 23 to pass through at least one second roller 251, thereby preventing the working material B from directly contacting the cutter 252 before the cutting action is performed, thereby preventing damage to the working material B.

[0060] During the roll change process, see Figure 3 If the swing arm 21 drives the roller mechanism 23 to swing to the left until it abuts against the spare material roll A2, the roller mechanism 23 can drive the working material strip B to wrap around the second roller 251 located on the right, thereby avoiding direct contact between the working material strip B and the cutter 252 before the cutting action is performed.

[0061] See Figure 8 If the swing arm 21 drives the roller mechanism 23 to swing to the right until it abuts against the spare material roll A2, the roller mechanism 23 can drive the working material strip B to wrap around the second roller 251 on the left, thereby avoiding direct contact between the working material strip B and the cutter 252 before the cutting action is performed.

[0062] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A roll changing device, characterized in that: include: An unwinding assembly (10) comprises two unwinding mechanisms that alternately serve as a working unwinding mechanism (10a) and a standby unwinding mechanism (10b), wherein the working unwinding mechanism (10a) is used to load a working material roll (A1) and unwind and output a working material tape (B), and the standby unwinding mechanism (10b) is used to load a standby material roll (A2); and A roll changing assembly (20) comprises a swing arm (21) and a roller mechanism (23), wherein the roller mechanism (23) is arranged on the swing arm (21) and is located between the working material roll (A1) and the standby material roll (A2); the roller mechanism (23) is used for allowing the working material strip (B) to pass through, and can be controlled to rotate relative to the swing arm (21) so as to wrap the passing working material strip (B) around the roller mechanism (23) toward the side of the standby material roll (A2); The swing arm (21) can controllably drive the roller mechanism (23) to swing toward the spare material roll (A2), so as to bond the working material strip (B) wound on the roller mechanism (23) and the starting end of the material strip of the spare material roll (A2) to each other.

2. The roll changing device according to claim 1, characterized in that: The roll changing assembly (20) further comprises a mounting seat (27), a first rotating shaft (280) and a first rotating driving member (281), wherein the first rotating shaft (280) is rotatably connected to the mounting seat (27), one end of the swing arm (21) is fixedly connected to the first rotating shaft (280), the roller mechanism (23) is rotatably connected to the other end of the swing arm (21), the first rotating driving member (281) is mounted on the mounting seat (27), and the driving end of the first rotating driving member (281) is connected to the first rotating shaft (280).

3. The roll changing device according to claim 2, characterized in that: The roll changing assembly (20) further comprises a driving gear (282) mounted on a driving end of the first rotating drive member (281) and a driven gear (283) mounted on the first rotating shaft (280), wherein the driving gear (282) and the driven gear (283) are meshed with each other and are arranged in sequence along a first preset direction (X1); The working unwinding mechanism (10a) and the standby unwinding mechanism (10b) are arranged in sequence along a second preset direction (X2), and the first preset direction (X1) intersects with the second preset direction (X2).

4. The roll changing device according to claim 1, characterized in that: The roller mechanism (23) comprises a rotating disk (231) and at least two first rollers (232). The rotating disk (231) is rotatably connected to the swing arm (21). Each of the first rollers (232) is mounted on the rotating disk (231) and is located between the standby material roll (A2) and the working material roll (A1). The working material strip (B) unwound and output by the working unwinding mechanism (10a) passes between each of the first rollers (232).

5. The roll changing device according to claim 4, characterized in that: There are two first rollers (232), and a belt passage for the working material belt (B) to pass through is formed between the two first rollers (232).

6. The roll changing device according to claim 4, characterized in that: The roll changing assembly (20) further includes a second rotating shaft and a second rotating driving member (261), wherein the second rotating shaft is rotatably connected to the swing arm (21), the rotating disk (231) is mounted on the second rotating shaft, the second rotating driving member (261) is mounted on the swing arm (21), and the driving end of the second rotating driving member (261) is connected to the second rotating shaft.

7. The roll changing device according to claim 6, characterized in that: The roll changing assembly (20) further comprises a driving wheel (262), a driven wheel (263) and a transmission belt (264), wherein the driving wheel (262) is mounted on the driving end of the second rotating drive member (261), the driven wheel (263) is mounted on the second rotating shaft, and the transmission belt (264) is sleeved between the driving wheel (262) and the driven wheel (263); The driving wheel (262) and the driven wheel (263) are arranged in sequence along a first preset direction (X1), the working unwinding mechanism (10a) and the standby unwinding mechanism (10b) are arranged in sequence along a second preset direction (X2), and the first preset direction (X1) and the second preset direction (X2) intersect.

8. The roll changing device according to claim 1, characterized in that: The roll changing assembly (20) further comprises a cutting mechanism (25), wherein the cutting mechanism (25) is used to cut the working material strip (B) between the roller mechanism (23) and the working material roll (A1).

9. The roll changing device according to claim 8, characterized in that: The cutting mechanism (25) comprises a fixed seat (253), a cutter seat (254), a cutter (252) and a cutting drive member (255); the cutter seat (254) is movably connected to the fixed seat (253); the cutter (252) is mounted on the cutter seat (254); the cutting drive member (255) is mounted on the fixed seat (253); and a driving end of the cutting drive member (255) is connected to the cutter seat (254).

10. The roll changing device according to claim 9, characterized in that: The cutting mechanism (25) further comprises two second rollers (251) mounted on the fixed seat (253); when the swing arm (21) drives the roller mechanism (23) to swing toward the standby material roll (A2), the working material strip (B) between the working material roll (A1) and the roller mechanism (23) can be driven to pass through at least one of the second rollers (251); Under the driving action of the cutting drive member (255), the cutter seat (254) can drive the cutter (252) to extend from between the two second rollers (251) and cut the working material strip (B) passing through.

11. A winding device, characterized in that: The device comprises a roll changing device as claimed in any one of claims 1 to 10.

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