Material belt temporary storage device, unwinding device and battery production line

Abstract

The utility model provides a material belt temporary storage device, an unwinding device and a battery production line, and the material belt temporary storage device comprises a mounting part which is provided with a sliding rail; the fixed roller is fixedly arranged on the mounting part, the temporary storage roller and the tensioning roller are arranged on the sliding rail in a sliding mode, the tensioning roller is located between the fixed roller and the temporary storage roller, and the fixed roller, the temporary storage roller and the tensioning roller are distributed in a triangular mode; the first elastic traction piece is connected between the fixed roller and the tensioning roller, and the second elastic traction piece is connected between the temporary storage roller and the tensioning roller; and the first driving mechanism is used for driving the buffering roller to move along the sliding rail. By means of the structure, the buffering device integrates the tensioning function on the material belt, meanwhile, the tensioning roller exerts tensioning force on the material belt through the first elastic traction piece and the second elastic traction piece, and the number of driving components is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to a material strip buffer device, an unwinding device and a battery production line. Background Art

[0002] Battery production equipment requires an unwinding device to unwind the strip. The unwinding device includes an unwinding roller, a buffering device downstream of the unwinding roller, and a tensioning device. The buffering device can buffer or release the strip to match the downstream production rhythm. The tensioning device includes a movable tensioning roller to ensure that the strip remains tensioned during buffering and release. The buffering device and tensioning device in the existing technology are two independent systems, which take up a lot of space and have many drive components, increasing equipment costs. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the cache device and tensioning device of the material strip unwinding device in the battery production equipment in the prior art that they occupy a large space and have many driving components, thereby providing a material strip cache device, an unwinding device and a battery production line.

[0004] In order to solve the above problems, the utility model provides a material strip cache device, including: a mounting part, on which a slide rail is provided; a fixed roller, a cache roller and a tensioning roller, the fixed roller is fixedly arranged on the mounting part, and the cache roller and the tensioning roller can be slidably arranged on the slide rail, the tensioning roller is located between the fixed roller and the cache roller, and the fixed roller, the cache roller and the tensioning roller are distributed in a triangular shape; a first elastic traction member and a second elastic traction member, the first elastic traction member is connected between the fixed roller and the tensioning roller, and provides a pulling force toward the fixed roller to the tensioning roller, the second elastic traction member is connected between the cache roller and the tensioning roller, and provides a pulling force toward the cache roller to the tensioning roller; a first driving mechanism, for driving the cache roller to move along the slide rail.

[0005] Optionally, the slide rail has an arc-shaped structure, and the fixed roller is fixedly arranged at the end of the slide rail.

[0006] Optionally, the mounting portion is a plate-shaped structure, the slide rail passes through two surfaces of the mounting portion, and the fixed roller, the buffer roller and the tensioning roller all pass through the slide rail.

[0007] Optionally, the fixed roller, the buffer roller and the tensioning roller all include a roller portion and a rod portion that are coaxially connected, the roller portion of the fixed roller, the roller portion of the buffer roller and the roller portion of the tensioning roller are all located on one side of the mounting portion, the rod portion of the fixed roller, the rod portion of the buffer roller and the rod portion of the tensioning roller all pass through the slide rail, the two ends of the first elastic traction member are respectively connected to the rod portion of the fixed roller and the rod portion of the tensioning roller, the two ends of the second elastic traction member are respectively connected to the rod portion of the buffer roller and the rod portion of the tensioning roller, and the driving end of the first driving mechanism is connected to the rod portion of the buffer roller.

[0008] Optionally, a rolling structure is provided between the rod portion of the tensioning roller and the slide rail.

[0009] Optionally, the material strip caching device further includes a swing rod, the first driving mechanism drives the swing rod to swing, and the swing end of the swing rod is connected to the cache roller.

[0010] Optionally, the slide rails, fixed rollers, cache rollers and tensioning rollers are multiple groups, wherein multiple slide rails are arranged in parallel, multiple fixed rollers are arranged corresponding to multiple slide rails, each slide rail is provided with a cache roller and a tensioning roller, and the first drive mechanism drives the multiple cache rollers to move synchronously.

[0011] The utility model also provides an unwinding device, including: a mounting plate; an unwinding roller, which is arranged on the mounting plate; a material strip cache device, which is arranged on the mounting plate and located downstream of the unwinding roller, the material strip cache device is the above-mentioned material strip cache device, and the mounting plate forms a mounting portion; a feeding mechanism, which is arranged on the mounting plate and located downstream of the material strip cache device.

[0012] Optionally, the unwinding roller is movably arranged on the mounting plate along its axial direction, and the unwinding device further includes a second driving mechanism, which is used to drive the unwinding roller to move.

[0013] Optionally, the unwinding device further includes a base and a third driving mechanism, the mounting plate is movably disposed on the base, and the mounting plate can move relative to the base along the axial direction of the unwinding roller, and the third driving mechanism drives the mounting plate to move.

[0014] Optionally, the slide rail is arc-shaped and is concentrically arranged with the unwinding roller.

[0015] The utility model also provides a battery production line, comprising the above-mentioned material strip buffer device, or comprising the above-mentioned unwinding device.

[0016] The utility model has the following advantages:

[0017] By utilizing the technical solution of the present invention, the material strip passes through a fixed roller, a tensioning roller, and a cache roller in sequence. By driving the tensioning roller to slide in the slide rail through the first driving mechanism, the material strip can be cached and released. At the same time, the two sides of the tensioning roller are pulled by the first elastic traction member and the second elastic traction member, and can always apply tensioning force to the material strip under the adjustment of the position of the cache roller, so that the material strip remains in a tensioned state. The above structure enables the cache device to integrate the tensioning function of the material strip, and at the same time, the tensioning roller applies tensioning force to the material strip through the first elastic traction member and the second elastic traction member, thereby reducing the number of driving components. Therefore, the technical solution of the present invention solves the defects of the cache device and the tensioning device of the material strip unwinding device in the battery production equipment in the prior art, which occupy a large space and have many driving components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A structural diagram of a first embodiment of the unwinding device of the present invention is shown;

[0020] Figure 2 Shown Figure 1 A magnified diagram of point A in the middle (i.e., the tape buffer device);

[0021] Figure 3 Shown Figure 1 Schematic diagram of the unwinding device from the rear side;

[0022] Figure 4 A schematic diagram showing the coordination of various structures of the strip buffer device is shown;

[0023] Figure 5 The figure shows the structure of the second embodiment of the unwinding device of the present invention.

[0024] Description of reference numerals:

[0025] 10. Mounting portion; 20. Slide rail; 30. Fixed roller; 40. Cache roller; 50. Tensioning roller; 60. First elastic traction member; 70. Second elastic traction member; 80. First driving mechanism; 91. Roller portion; 92. Rod portion; 100. Rolling structure; 110. Rocker arm; 120. Mounting plate; 130. Unwinding roller; 140. Material strip caching device; 150. Feeding mechanism; 160. Second driving mechanism; 170. Base; 180. Third driving mechanism. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Example 1

[0031] like Figures 1 to 4 As shown, a first embodiment of a web caching device according to the present application includes a mounting portion 10, a fixed roller 30, a buffer roller 40, a tensioning roller 50, a first elastic traction member 60, a second elastic traction member 70, and a first drive mechanism 80. The mounting portion 10 is provided with a slide rail 20. The fixed roller 30 is fixedly mounted on the mounting portion 10, and both the buffer roller 40 and the tensioning roller 50 are slidably mounted on the slide rail 20, with the tensioning roller 50 positioned between the fixed roller 30 and the buffer roller 40. The fixed roller 30, buffer roller 40, and tensioning roller 50 are arranged in a triangular pattern. The first elastic traction member 60 is connected between the fixed roller 30 and the tensioning roller 50, and applies a pulling force to the tensioning roller 50 toward the fixed roller 30. The second elastic traction member 70 is connected between the buffer roller 40 and the tensioning roller 50, and applies a pulling force to the tensioning roller 50 toward the buffer roller 40. The first drive mechanism 80 is used to drive the buffer roller 40 to move along the slide rail 20.

[0032] Utilizing the technical solution of this embodiment, the material strip passes through the fixed roller 30, the tensioning roller 50, and the buffer roller 40 in sequence. By driving the tensioning roller 50 to slide in the slide rail 20 through the first drive mechanism 80, the material strip can be cached and released. At the same time, both sides of the tensioning roller 50 are pulled by the first elastic traction member 60 and the second elastic traction member 70, and can always apply tensioning force to the material strip under the adjustment of the position of the buffer roller 40, so that the material strip remains in a tensioned state. The above structure enables the buffer device to integrate the tensioning function of the material strip, and at the same time, the tensioning roller 50 applies tensioning force to the material strip through the first elastic traction member 60 and the second elastic traction member 70, thereby reducing the number of driving components. Therefore, the technical solution of this embodiment solves the defects of the prior art battery production equipment in that the cache device and the tensioning device of the material strip unwinding device occupy a large space and have many driving components.

[0033] like Figure 1 and Figure 2 It can be seen that the function of the mounting portion 10 is to provide a mounting location for the fixed roller 30, the buffer roller 40 and the tension roller 50. The mounting portion 10 can be in the form of a mounting plate, a mounting frame, etc.

[0034] Furthermore, the fixed roller 30 is fixedly mounted on the mounting portion 10, serving as a feed roller. A slide rail 20 is provided on the mounting portion 10, and the buffer roller 40 is movably mounted on the slide rail 20 via a first drive mechanism 80. The material strip passes through the fixed roller 30 and the buffer roller 40.

[0035] Those skilled in the art will understand that when the first drive mechanism 80 drives the cache roller 40 to move in the slide rail 20, the cache roller 40 moves in a direction away from the fixed roller 30 to cache the material strip, and the cache roller 40 moves in a direction close to the fixed roller 30 to release the material strip.

[0036] from Figure 1 and Figure 2 It can also be seen that a tensioning roller 50 is also installed within the slide rail 20. The axes of the tensioning roller 50, the fixed roller 30, and the buffer roller 40 are arranged in a triangular pattern, i.e., the three axes are located at the vertices of the triangle. In other words, the axes of the tensioning roller 50, the fixed roller 30, and the buffer roller 40 are not collinear.

[0037] With this arrangement, the material strip passes through the fixed roller 30 , the tensioning roller 50 and the buffer roller 40 in sequence, and forms a wrap angle at the tensioning roller 50 , so that the tensioning roller 50 can apply tensioning force to the material strip.

[0038] Furthermore, a first elastic traction member 60 is connected between the fixed roller 30 and the tensioning roller 50, and applies a pulling force to the tensioning roller 50 toward the fixed roller 30. A second elastic traction member 70 is connected between the buffer roller 40 and the tensioning roller 50, and applies a pulling force to the tensioning roller 50 toward the buffer roller 40. In other words, tension is applied to both sides of the tensioning roller 50 through the first and second elastic traction members 60 and 70, so the tensioning roller 50 can always apply tension to the web, thereby achieving a tensioning effect.

[0039] It should be noted that when the buffer roller 40 moves in the slide rail 20, the elastic forces of the first elastic traction member 60 and the second elastic traction member 70 change, but both are always in a tensioned state, and the position of the tensioning roller 50 in the slide rail 20 also changes.

[0040] Optionally, the first elastic pulling member 60 and the second elastic pulling member 70 may be elastic belts, elastic ropes, etc.

[0041] Alternatively, as Figure 1 and Figure 2 As shown, the slide rail 20 has an arc-shaped structure, and the fixed roller 30 is fixedly arranged at the end of the slide rail 20 .

[0042] In some embodiments not shown, the slide rail 20 may also be linear or irregular in shape.

[0043] In some embodiments not shown, the fixed roller 30 may also be disposed outside the slide rail 20 .

[0044] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the mounting portion 10 is a plate-like structure, the slide rail 20 passes through two surfaces of the mounting portion 10 , and the fixed roller 30 , the buffer roller 40 and the tensioning roller 50 all pass through the slide rail 20 .

[0045] That is, the slide rail 20 in this embodiment is also a long hole structure.

[0046] Specifically, one end of the fixed roller 30, the buffer roller 40, and the tension roller 50 is used for the running of the material belt, and the other end is used to connect to the first elastic traction member 60 and the second elastic traction member 70, and to the first driving mechanism 80. Therefore, the running of the material belt does not interfere with the connection and drive of each structure.

[0047] like Figure 2 and Figure 3As shown, in the technical solution of this embodiment, the fixed roller 30, the buffer roller 40 and the tensioning roller 50 all include a roller portion 91 and a rod portion 92 that are coaxially connected. The roller portion 91 of the fixed roller 30, the roller portion 91 of the buffer roller 40 and the roller portion 91 of the tensioning roller 50 are all located on one side of the mounting portion 10, and the rod portion 92 of the fixed roller 30, the rod portion 92 of the buffer roller 40 and the rod portion 92 of the tensioning roller 50 all pass through the slide rail 20.

[0048] The roller portion 91 is used to guide the material strip and comprises a round roller. The rod portion 92 is used to connect to the first elastic traction member 60, the second elastic traction member 70, or the first drive mechanism 80. The roller portions 91 of the fixed roller 30, the buffer roller 40, and the tensioning roller 50 are located on the same side of the mounting portion 10. The rod portions 92 of the fixed roller 30, the buffer roller 40, and the tensioning roller 50 all pass through the slide rail 20, and at least a portion of the roller portions 92 of the three rollers is located on the other side of the mounting portion 10, thereby facilitating connection with the first elastic traction member 60, the second elastic traction member 70, or the first drive mechanism 80.

[0049] Furthermore, the rod portion 92 of the fixed roller 30 is fixed at one end of the slide rail 20 .

[0050] In an embodiment not shown, the fixing roller 30 may also directly pass through the mounting portion 10 and be fixed without being connected to the slide rail 20 .

[0051] Optionally, the cross-sectional shape of the rod portion 92 may be circular, square, polygonal, or the like.

[0052] from Figure 4 It can be seen that the two ends of the first elastic traction member 60 are respectively connected to the rod portion 92 of the fixed roller 30 and the rod portion 92 of the tensioning roller 50, the two ends of the second elastic traction member 70 are respectively connected to the rod portion 92 of the cache roller 40 and the rod portion 92 of the tensioning roller 50, and the driving end of the first driving mechanism 80 is connected to the rod portion 92 of the cache roller 40.

[0053] Specifically, because the fixed roller 30 is fixed to the mounting portion 10, the first elastic traction member 60 applies an elastic traction force to the tensioning roller 50 toward the fixed roller 30. Because the buffer roller 40 is fixed by the braking of the first drive mechanism 80, the second elastic traction member 70 applies an elastic traction force to the tensioning roller 50 toward the buffer roller 40. Under the action of the two elastic traction members, the tensioning roller 50 maintains a balance with the tension applied by the strip on the tensioning roller 50. When the tension of the strip on the tensioning roller 50 changes, the elastic forces of the two elastic traction members interact with the tension of the strip, restoring the tension to the strip.

[0054] like Figure 2As shown, in the technical solution of this embodiment, a rolling structure 100 is provided between the rod portion 92 of the tensioning roller 50 and the slide rail 20. The rolling structure 100 enables the tensioning roller 50 to maintain smooth movement within the slide rail 20. At the same time, the rolling structure 100 can also fix the axial position of the tensioning roller 50.

[0055] Optionally, the rolling structure 100 may be a bearing, a roller with an inner ring, or the like.

[0056] Furthermore, the rolling structure 100 may also have an outer ring, the outer surface of the outer ring is provided with a clamping groove, and the clamping groove is clamped with two opposite inner walls of the slide rail 20 to fix the axial position of the tensioning roller 50.

[0057] like Figure 4 As shown, in the technical solution of this embodiment, the material strip buffer device further includes a swing rod 110 , the first driving mechanism 80 drives the swing rod 110 to swing, and the swing end of the swing rod 110 is connected to the buffer roller 40 .

[0058] Specifically, the swing arm 110 serves as a transmission element, and the first drive mechanism 80 can be a motor. The torque of the motor's output shaft is transmitted to the swing arm 110 via a belt or chain, driving the swing arm 110 to oscillate. The swing of the swing arm 110 drives the buffer roller 40 within the slide rail 20. Therefore, in this embodiment, the curvature of the curved slide rail 20 coincides with the movement trajectory of the end of the tension roller 50.

[0059] Optionally, the first driving mechanism 80 is a servo motor, so as to accurately control the position of the buffer roller 40 in the slide rail 20 .

[0060] Example 2

[0061] like Figure 5 As shown, the difference between the second embodiment of the unwinding device according to the present application and the first embodiment described above is that the slide rails 20, fixed rollers 30, buffer rollers 40, and tension rollers 50 are multiple groups. Specifically, multiple slide rails 20 are arranged in parallel, multiple fixed rollers 30 are arranged corresponding to multiple slide rails 20, and each slide rail 20 is provided with a buffer roller 40 and a tension roller 50. The first drive mechanism 80 drives the multiple buffer rollers 40 to move synchronously.

[0062] Specifically, in this embodiment, two parallel slide rails 20 are provided, extending along the same trajectory. There are two fixed rollers 30, two buffer rollers 40, and two tension rollers 50. The two fixed rollers 30 are fixedly positioned at the ends of the two slide rails 20. The two buffer rollers 40 are slidably disposed within the two slide rails 20, and both are connected to the first drive mechanism 80 for synchronous movement. The two buffer rollers 40 may be connected together by a connecting frame or other structure. The two tension rollers 50 are movably disposed within the two slide rails 20.

[0063] Furthermore, each set of fixed rollers 30 , buffer rollers 40 and tensioning rollers 50 is provided with the above-mentioned first elastic pulling member 60 and second elastic pulling member 70 .

[0064] Further, from Figure 5 It can be seen that a roller is provided between the two slide rails 20. Figure 5 As can be seen from the dotted belt path shown, the belt path in Example 2 is: bypassing the first buffer roller 40 - passing the first tensioning roller 50 - bypassing the two fixed rollers 30 - passing the roller - bypassing the second buffer roller 40 - passing the second tensioning roller 50 - downstream process.

[0065] In the technical solution of the second embodiment, when the first driving mechanism 80 drives the two buffer rollers 40 to move, a material strip twice as long as that of the first embodiment can be buffered.

[0066] Furthermore, those skilled in the art can set more groups of slide rails 20, fixed rollers 30, buffer rollers 40 and tension rollers 50 according to actual needs. At the same time, in order to facilitate tape walking, those skilled in the art can flexibly set rollers between adjacent slide rails 20.

[0067] like Figure 1 As shown, the present application also provides an unwinding device. According to an embodiment of the unwinding device of the present application, it includes a mounting plate 120, an unwinding roller 130, the aforementioned material strip buffer device 140, and a feeding mechanism 150. The unwinding roller 130 is disposed on the mounting plate 120 and is used to unwind the material strip. The material strip buffer device 140 is disposed on the mounting plate 120 and is located downstream of the unwinding roller 130, and the aforementioned mounting plate 120 forms the mounting portion 10. The feeding mechanism 150 is disposed on the mounting plate 120 and is located downstream of the material strip buffer device 140.

[0068] Specifically, when the unwinding roller 130 rotates, it can drive the material roll to rotate and realize unwinding. During the unwinding process, if the unwinding speed is inconsistent with the downstream production rhythm, the first drive mechanism 80 drives the buffer roller 40 to move, thereby realizing the caching or release of the material strip. During the process of caching or releasing the material strip, the tensioning roller 50 maintains balance under the action of the first elastic traction member 60, the second elastic traction member 70 and the material strip tension, so that the material strip is always in a tensioned state. The feeding mechanism 150 includes an active roller, which pulls the material strip out to the downstream process.

[0069] from Figure 5 It can be seen that the extension direction of the slide rail 20 is arc-shaped, and the slide rail 20 is concentrically arranged with the fixed roller 30. That is, when the buffer roller 40 and the tension roller 50 move in the slide rail 20, the center of the movement trajectory is also located at the central axis of the unwinding roller 130.

[0070] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the unwinding roller 130 is movably arranged on the mounting plate 120 along its axial direction, and the unwinding device further includes a second driving mechanism 160, which is used to drive the unwinding roller 130 to move.

[0071] The unwinding device further includes a first deflection correction sensor that detects the positional accuracy of the web at the unwinding location. If the first deflection correction sensor detects that the web's positional accuracy at the unwinding location does not meet the required accuracy, the second drive mechanism 160 drives the unwinding roller 130 to move along its axial direction, thereby adjusting the web's position until the required accuracy is met.

[0072] Optionally, the second driving mechanism 160 may be a linear motor, a driving cylinder, or the like.

[0073] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the unwinding device also includes a base 170 and a third driving mechanism 180, the mounting plate 120 is movably arranged on the base 170, and the mounting plate 120 can move relative to the base 170 along the axial direction of the unwinding roller 130, and the third driving mechanism 180 drives the mounting plate 120 to move.

[0074] The unwinding device further includes a second skew-correcting sensor that detects the overall position accuracy of the web. If the second skew-correcting sensor detects that the overall position accuracy of the web does not meet the required accuracy, the third drive mechanism 180 drives the mounting plate 120 to move relative to the base 170, thereby adjusting the web position until the required accuracy is met.

[0075] Optionally, the second driving mechanism 160 may be a linear motor, a driving cylinder, or the like.

[0076] Optionally, the third driving mechanism 180 may be a linear motor, a driving cylinder, or the like.

[0077] Optionally, the driving directions of the second driving mechanism 160 and the third driving mechanism 180 are consistent, both being along the axial direction of the unwinding roller 130 .

[0078] In this embodiment, the action process of unwinding the material strip is as follows: the unwinding roller 130 unwinds - the second drive mechanism 160 performs unwinding correction - the material strip buffer device 140 releases the material strip from the buffer, and tensions - the overall correction of the third drive mechanism 180 - the feeding mechanism 150 feeds the material strip downstream.

[0079] In this embodiment, the tension control method for the web buffer device 140 is as follows: the unwind roller 130 calculates the unwinding linear speed using an unwinding speed sensor and a controller, and the feed mechanism 150 calculates the feed speed using a document feed speed sensor and a controller. Based on the difference between the unwinding speed and the feed speed, the controller controls the buffer speed of the web buffer device 140.

[0080] In this embodiment, the control method for unwinding correction or overall correction is to measure the offset change of the material belt through the offset sensor, then the controller stores the data, and then the MCU calculates the second-order offset function, and then the second drive mechanism 160 and / or the third drive mechanism 180 responds to perform correction.

[0081] In this embodiment, the cache control method of the material belt cache device 140 is to obtain the second-order displacement change of the driving motor of the feeding mechanism, and then the controller stores and reads the stored data, and then the MCU calculates the second-order cache quantity function, and then the cache function of the material belt cache device 140 responds, or the feeding drive of the feeding mechanism 150 responds.

[0082] The present application also provides a battery production line, including the above-mentioned material strip buffer device, or including the above-mentioned unwinding device.

[0083] These examples are provided for clarity of explanation only and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A material strip buffer device, characterized in that: include: A mounting portion (10), wherein a slide rail (20) is provided on the mounting portion (10); a fixed roller (30), a buffer roller (40) and a tensioning roller (50), wherein the fixed roller (30) is fixedly arranged on the mounting portion (10), the buffer roller (40) and the tensioning roller (50) are both slidably arranged on the slide rail (20), the tensioning roller (50) is located between the fixed roller (30) and the buffer roller (40), and the fixed roller (30), the buffer roller (40) and the tensioning roller (50) are distributed in a triangular shape; a first elastic traction member (60) and a second elastic traction member (70), wherein the first elastic traction member (60) is connected between the fixed roller (30) and the tensioning roller (50) and provides a pulling force to the tensioning roller (50) toward the fixed roller (30), and the second elastic traction member (70) is connected between the buffer roller (40) and the tensioning roller (50) and provides a pulling force to the tensioning roller (50) toward the buffer roller (40); The first driving mechanism (80) is used for driving the buffer roller (40) to move along the slide rail (20).

2. The strip buffer device according to claim 1, characterized in that: The slide rail (20) has an arc-shaped structure, and the fixed roller (30) is fixedly arranged at the end of the slide rail (20).

3. The material strip buffer device according to claim 1, characterized in that: The mounting portion (10) is a plate-shaped structure, the slide rail (20) passes through two surfaces of the mounting portion (10), and the fixed roller (30), the buffer roller (40) and the tensioning roller (50) all pass through the slide rail (20).

4. The material strip buffer device according to claim 3, characterized in that: The fixed roller (30), the buffer roller (40) and the tensioning roller (50) all include a roller portion (91) and a rod portion (92) that are coaxially connected. The roller portion (91) of the fixed roller (30), the roller portion (91) of the buffer roller (40) and the roller portion (91) of the tensioning roller (50) are all located on one side of the mounting portion (10). The rod portion (92) of the fixed roller (30), the rod portion (92) of the buffer roller (40) and the tensioning roller (50) are all located on one side of the mounting portion (10). The rods (92) all pass through the slide rails (20), the two ends of the first elastic traction member (60) are respectively connected to the rod (92) of the fixed roller (30) and the rod (92) of the tensioning roller (50), the two ends of the second elastic traction member (70) are respectively connected to the rod (92) of the buffer roller (40) and the rod (92) of the tensioning roller (50), and the driving end of the first driving mechanism (80) is connected to the rod (92) of the buffer roller (40).

5. The material strip buffer device according to claim 4, characterized in that: A rolling structure (100) is provided between the rod portion (92) of the tensioning roller (50) and the slide rail (20).

6. The material strip buffer device according to any one of claims 1 to 4, characterized in that: The material strip buffer device further comprises a swing rod (110), the first driving mechanism (80) drives the swing rod (110) to swing, and the swing end of the swing rod (110) is connected to the buffer roller (40).

7. The material strip buffer device according to any one of claims 1 to 4, characterized in that: The slide rails (20), the fixed rollers (30), the buffer rollers (40) and the tensioning rollers (50) are multiple groups, wherein a plurality of the slide rails (20) are arranged in parallel, a plurality of the fixed rollers (30) are arranged corresponding to a plurality of the slide rails (20), each of the slide rails (20) is provided with the buffer rollers (40) and the tensioning rollers (50), and the first driving mechanism (80) drives the plurality of the buffer rollers (40) to move synchronously.

8. A reeling device, characterized in that: include: Mounting plate (120); an unwinding roller (130), arranged on the mounting plate (120); a material strip buffer device (140) disposed on the mounting plate (120) and located downstream of the unwinding roller (130), the material strip buffer device (140) being the material strip buffer device according to any one of claims 1 to 7, and the mounting plate (120) forming the mounting portion (10); A feeding mechanism (150) is provided on the mounting plate (120) and is located downstream of the material strip buffer device (140).

9. The unwinding device according to claim 8, characterized in that: The unwinding roller (130) is movably arranged on the mounting plate (120) along its axial direction. The unwinding device further comprises a second driving mechanism (160) for driving the unwinding roller (130) to move.

10. The unwinding device according to claim 8, characterized in that: The slide rail (20) is arc-shaped, and the slide rail (20) and the unwinding roller (130) are arranged concentrically.

11. The unwinding device according to claim 8, characterized in that: The unwinding device further comprises a base (170) and a third driving mechanism (180); the mounting plate (120) is movably arranged on the base (170), and the mounting plate (120) is capable of moving relative to the base (170) along the axial direction of the unwinding roller (130); and the third driving mechanism (180) drives the mounting plate (120) to move.

12. A battery production line, characterized in that: It comprises the material strip buffer device according to any one of claims 1 to 7, or it comprises the unwinding device according to any one of claims 8 to 11.

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