Lamella machine diaphragm assisted tail wrap device

Abstract

This application relates to an auxiliary tail-winding device for a diaphragm in a stacking machine. The auxiliary tail-winding device includes: an unwinding mechanism, a roller assembly, a tension adjustment mechanism, and a tension detection mechanism. The unwinding mechanism outputs the diaphragm; the roller assembly guides the diaphragm; the tension adjustment mechanism is located on the side of the roller assembly away from the unwinding mechanism, and is used to adjust the tension of the diaphragm; the tension detection mechanism includes a fixed frame, a tension sensor, and a tension spring. One end of the tension spring is fixed to the tension adjustment mechanism, and the other end is pulled by the tension sensor, which is connected to the fixed frame and is used to detect the tension of the tension spring. The solution provided by this application can detect the tension of the diaphragm at the end of the winding process, preventing the diaphragm from tearing due to excessive tension.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a separator auxiliary tail winding device for a stacking machine. Background Technology

[0002] In related technologies, traditional battery separator unwinding devices have at least three defects in the tail winding stage. First, the end of the unwinding shaft adopts a rigid fixed structure, which prevents the separator from adaptively floating with changes in tension when it is finished, resulting in stretching deformation or wrinkles of the separator. Second, the existing tension detection mechanism only acts on the main unwinding area, and there is a lack of effective tension monitoring means in the tail winding stage, resulting in loss of control over the quality of the separator at the tail winding stage. Third, when the suction plate adsorbs the separator for tail winding, mechanical vibration is directly transmitted to the end of the separator, which can easily cause tearing of the separator edge. Utility Model Content

[0003] To address or partially address the problems existing in the related technologies, this application provides a diaphragm auxiliary tail winding device for a stacking machine, which can detect the tension of the diaphragm at the end of winding and prevent the diaphragm from tearing due to excessive tension.

[0004] This application provides a diaphragm auxiliary tail winding device for a stacking machine, which includes an unwinding mechanism, a roller guide assembly, a tension adjustment mechanism, and a tension detection mechanism. The unwinding mechanism is used to output the diaphragm; the roller guide assembly is disposed on one side of the unwinding mechanism and is used to guide the diaphragm; the tension adjustment mechanism is located on the side of the roller guide assembly away from the unwinding mechanism and is used to adjust the tension of the diaphragm; the tension detection mechanism is disposed adjacent to the tension adjustment mechanism, and the tension detection mechanism is used to detect the tension of the diaphragm and control the tension adjustment mechanism to adjust the tension of the diaphragm.

[0005] Furthermore, the tension detection mechanism includes a fixing frame, a tension sensor, a tension spring, and a damper; One end of the tension spring is fixed to the tension adjustment mechanism, and the other end of the tension spring is pulled by the tension sensor. The tension sensor is connected to the fixed frame and is used to detect the tension of the tension spring. The damper is fixed to the end of the tension sensor and the end of the tension spring that is away from the tension adjustment mechanism.

[0006] Furthermore, the tension adjustment mechanism includes a drive mechanism and an adjustment roller. The drive mechanism is fixed relative to the end of the tension spring away from the tension sensor. The drive mechanism is connected to the adjustment roller, and the drive mechanism drives the adjustment roller to rotate so that the adjustment roller is against or away from the diaphragm.

[0007] Furthermore, the tension adjustment mechanism also includes an adsorption element and a fixed roller. The adsorption element is fixed relative to the end of the tension spring away from the tension sensor. The adsorption element is used to adsorb the diaphragm. The driving mechanism is connected to the fixed roller. The adsorption element, the adjusting roller, and the fixed roller are located on the same plane. The driving mechanism is used to drive the fixed roller to rotate so that the fixed roller clamps the diaphragm between the fixed roller and the adsorption element.

[0008] Furthermore, the drive mechanism includes a motor, a driven wheel, a first bracket, and a second bracket. The motor is fixed relative to the end of the tension spring away from the tension sensor. The motor drives the driven wheel to rotate. The driven wheel is connected to the first bracket and the second bracket respectively. The first bracket and the second bracket rotate as the driven wheel rotates. The adjusting roller is mounted on the first bracket, and the fixed roller is mounted on the second bracket.

[0009] Furthermore, the angle between the central axis of the adjusting roller and the central axis of the fixed roller about the central axis of the driven wheel is 90°.

[0010] Furthermore, the drive mechanism also includes a drive wheel and a transmission belt, the output end of the motor is connected to the drive wheel, and the transmission belt is sleeved on the drive wheel and the driven wheel.

[0011] Furthermore, the distance between the adjusting roller and the central axis of the driven wheel is greater than the distance between the adsorption member and the central axis of the driven wheel, and the distance between the fixed roller and the central axis of the driven wheel is greater than the distance between the adsorption member and the central axis of the driven wheel.

[0012] Furthermore, the drive mechanism is communicatively connected and / or mechanically connected to the tension detection mechanism, and the drive mechanism drives the adjusting roller and / or the fixed roller to rotate according to the tension of the tension spring, so as to adjust the tension of the diaphragm.

[0013] Furthermore, the roller assembly includes a rotating mechanism, a first roller, a second roller, and a rotating roller. The rotating roller is located between the first roller and the second roller. The rotating mechanism drives the rotating roller to swing. The angle between the central axis of the first roller and the central axis of the second roller about the central axis of the rotating roller is 30°~180°.

[0014] The technical solution provided in this application may include the following beneficial results: This application uses a tension detection mechanism to detect the tension on the tension adjustment mechanism, thereby detecting the tension on the diaphragm when the tension adjustment mechanism adjusts the diaphragm tension, so that the tension adjustment mechanism can adjust the tension of the diaphragm according to the tension of the diaphragm tail roll when the diaphragm is finished, so that the diaphragm tension can be kept within a suitable range, avoiding the diaphragm breakage when finished, and ensuring the normal progress of the diaphragm processing.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0016] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0017] Figure 1 This is a schematic diagram of the structure of the diaphragm auxiliary tail winding device of the stacking machine shown in the embodiments of this application; Figure 2 This is a schematic diagram of the tension adjustment mechanism and tension detection mechanism shown in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the roller assembly shown in the embodiments of this application; Figure 4 This is a schematic diagram of the adsorption membrane of the adsorption element shown in the embodiments of this application; Figure 5 This is a schematic diagram showing the diaphragm after it has been cut, as illustrated in an embodiment of this application.

[0018] Reference numerals: 1. Unwinding mechanism; 11. Material roll; 2. Overhead roller assembly; 21. Rotating mechanism; 22. First overhead roller; 23. Second overhead roller; 24. Rotating overhead roller; 3. Tension adjustment mechanism; 31. Adjusting roller; 32. Adsorption element; 33. Fixed roller; 34. Base; 35. Motor; 36. Driven wheel; 37. First bracket; 38. Second bracket; 39. Drive wheel; 391. Transmission belt; 4. Tension detection mechanism; 41. Fixed frame; 42. Tension sensor; 43. Tension spring; 44. Damper; 5. Buffer mechanism; 6. Diaphragm. Detailed Implementation

[0019] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0020] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] Traditional battery separator unwinding devices suffer from at least three defects in the end-winding stage. First, the unwinding shaft uses a rigid, fixed structure, preventing the separator from adapting to tension changes during winding, leading to stretching deformation or wrinkling. Second, existing tension detection mechanisms only operate in the main unwinding area, lacking effective tension monitoring in the end-winding stage, resulting in uncontrolled separator winding quality. Third, when the suction plate adsorbs the separator for winding, mechanical vibration is directly transmitted to the separator end, easily causing edge tearing. To address these issues, this application provides a separator auxiliary end-winding device for a stacking machine, capable of detecting the tension during separator winding and preventing tearing due to excessive tension.

[0024] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0025] See Figure 1 and Figure 2The diaphragm auxiliary tail winding device of the stacking machine includes an unwinding mechanism 1, a roller guide assembly 2, a tension adjustment mechanism 3, and a tension detection mechanism 4. The unwinding mechanism 1 includes at least two rolls 11, each with a diaphragm 6 mounted on it. Each roll 11 can output the diaphragm 6, and after one roll 11 has output the diaphragm 6, the other roll 11 can take over. The roller guide assembly 2 is located on one side of the unwinding mechanism 1 and guides the diaphragm 6 output from the unwinding mechanism 1, pulling it to the tension adjustment mechanism 3. The tension detection mechanism is adjacent to the tension adjustment mechanism and is used to detect the diaphragm tension and control the tension adjustment mechanism to adjust the diaphragm tension. Before the diaphragm 6 and electrode sheets are processed into a battery cell, the tension of the diaphragm 6 is adjusted by the tension adjustment mechanism 3.

[0026] This application uses a tension detection mechanism 4 to detect the tension on the tension adjustment mechanism 3, thereby detecting the tension on the diaphragm 6 when the tension adjustment mechanism 3 adjusts the tension of the diaphragm 6. This allows the tension adjustment mechanism 3 to adjust the tension of the diaphragm 6 according to the tension of the tail roll of the diaphragm 6 when the diaphragm 6 is finished, so that the tension of the diaphragm 6 can be kept within a suitable range, avoiding breakage of the diaphragm 6 when it is finished, and ensuring the normal progress of the diaphragm 6 processing.

[0027] See Figure 1 and Figure 2 The tension detection mechanism 4 includes a fixed frame 41, a tension sensor 42, a tension spring 43, and a damper 44. One end of the tension spring 43 is fixed to the tension adjustment mechanism 3, and the other end of the tension spring 43 is pulled to the tension sensor 42. The tension spring 43 can apply elastic force to the tension adjustment mechanism 3 and also to the tension sensor 42. The tension sensor 42 is connected to the fixed frame 41 and is used to detect the tension of the tension spring 43. By detecting the tension of the tension spring 43, the tension sensor 42 can detect the tension of the diaphragm 6 in the tail roll.

[0028] See Figure 1-5In actual operation, the unwinding mechanism 1 conveys the diaphragm 6 to the battery cell via the roller assembly 2. During this conveying process, the diaphragm 6 passes through the tension adjustment mechanism 3, which adjusts the tension of the diaphragm 6 in real time to ensure the normal processing of the diaphragm 6. When the unwinding mechanism 1 conveys the tail roll of the diaphragm 6 to the battery cell, it needs to cut the diaphragm 6 between the roller assembly 2 and the tension adjustment mechanism 3, so that one end of the diaphragm 6 in the battery cell is outside the battery cell and at the tension adjustment mechanism 3. Then, the tension adjustment mechanism 3 uses external tools or its own components to fix one end of the cut diaphragm 6. The tension adjustment mechanism 3, the tension detection mechanism 4, and the battery cell move together to the next station. The direction of movement of the tension adjustment mechanism 3, the tension detection mechanism 4, and the battery cell is the same as the extension direction of the tension spring 43. During the movement of the battery cell, it is necessary to ensure that the tension of the diaphragm 6 in the battery cell remains within a certain range. The tension detection mechanism 4 and the battery cell can remain relatively stationary during the movement. When the tension adjustment mechanism 3 pulls the diaphragm 6, the tension spring 43 will be pulled by the tension adjustment mechanism 3. The tension sensor 42 can calculate the tension of the diaphragm 6 by detecting the tension of the tension spring 43. The tension adjustment mechanism 3 then adjusts the pulling force applied to the diaphragm 6 according to the tension of the diaphragm 6, so that the tension of the diaphragm 6 in the battery cell is kept within a suitable range. The tension adjustment mechanism 3 can be controlled by an external PLC control system. The PLC control system receives the tension data of the diaphragm 6 and then controls the operation of the drive mechanism according to the data, so that the tension adjustment mechanism 3 adjusts the tension of the diaphragm 6.

[0029] See Figure 2 and Figure 4 The damper 44 is fixed to the end of the tension sensor 42 and the tension spring 43 away from the tension adjustment mechanism 3. The damper 44 provides floating for the extension and contraction of the tension spring 43, ensuring that the tension adjustment mechanism 3 can always be in contact with the diaphragm 6, and can make the tension adjustment mechanism 3 fluctuate less when adjusting the tension of the diaphragm 6, thus avoiding the diaphragm 6 from breaking.

[0030] See Figure 2 and Figure 4 The tension adjustment mechanism 3 includes a drive mechanism and an adjusting roller 31. The drive mechanism is fixed relative to the end of the tension spring 43 away from the tension sensor 42. The drive mechanism is connected to the adjusting roller 31. The drive mechanism can drive the adjusting roller 31 to rotate so that the adjusting roller 31 is against or away from the diaphragm 6. During the process of the tension adjustment mechanism 3 adjusting the diaphragm 6, the adjusting roller 31 is located above the diaphragm 6. The drive mechanism drives the adjusting roller 31 to rotate so that the adjusting roller 31 presses on the diaphragm 6. By adjusting the rotation amplitude of the adjusting roller 31 through the drive mechanism, the pressure and amplitude of the adjusting roller 31 pressing on the diaphragm 6 are changed, thereby changing the tension on the diaphragm 6.

[0031] See Figure 4 and Figure 5 In some embodiments, the tension adjustment mechanism 3 can fix the diaphragm 6. The tension adjustment mechanism 3 also includes an adsorption element 32 and a fixed roller 33. The adsorption element 32 is fixed relative to the end of the tension spring 43 away from the tension sensor 42. The adsorption element 32 is used to adsorb the diaphragm 6, wherein the adsorption element 32 can adsorb the diaphragm 6 by vacuum adsorption. The driving mechanism is connected to the fixed roller 33. The adsorption element 32, the adjusting roller 31, and the fixed roller 33 are located on the same plane. The driving mechanism is used to drive the fixed roller 33 to rotate so that the fixed roller 33 clamps the diaphragm 6 between the fixed roller 33 and the adsorption element 32. When the tension adjustment mechanism 3 and the roller assembly are connected... When the diaphragm 6 between the tension adjustment mechanism 3 and the roller assembly 2 needs to be cut, the drive mechanism drives the adjusting roller 31 to rotate, so that the adjusting roller 31 moves away from the diaphragm 6, and the adsorption member 32 then adsorbs the diaphragm 6. Then, the diaphragm 6 between the tension adjustment mechanism 3 and the roller assembly 2 is cut by an external device. During the process of cutting the diaphragm 6, the adsorption member 32 keeps adsorbing the diaphragm 6. Then, the drive mechanism drives the fixed roller 33 to rotate, so that the fixed roller 33 rotates to below the adsorption member 32 and presses the side of the diaphragm 6 away from the adsorption member 32, so that the fixed roller 33 and the adsorption member 32 clamp the diaphragm 6, ensuring that the tension adjustment mechanism 3 can firmly fix the diaphragm 6.

[0032] See Figure 2 and Figure 4The drive mechanism includes a base 34, a motor 35, a driven wheel 36, a first bracket 37, and a second bracket 38. The motor 35 is mounted on the base 34, and the base 34 is connected to the end of the tension spring 43 away from the tension sensor 42. The motor 35 and the end of the tension spring 43 away from the tension sensor 42 are fixed relative to each other. The motor 35 can drive the driven wheel 36 to rotate. The driven wheel 36 is connected to the first bracket 37 and the second bracket 38 respectively. The first bracket 37 and the second bracket 38 rotate with the driven wheel 36. The adjusting roller 31 is mounted on the first bracket 37 and is fixed to the first bracket 37. The fixed roller 33 is mounted on the second bracket 38 and is fixed to the second bracket 38. In some embodiments, the first support 37 and the second support 38 are fixed relative to each other. When the motor 35 drives the driven wheel 36 to rotate, the first support 37 and the second support 38 rotate together. Preferably, the angle between the central axis of the adjusting roller 31 and the central axis of the fixed roller 33 about the central axis of the driven wheel 36 remains unchanged, and the angle between the central axis of the adjusting roller 31 and the central axis of the fixed roller 33 about the central axis of the driven wheel 36 is 90°. The drive mechanism can select to press either the adjusting roller 31 or the fixed roller 33 onto the diaphragm 6, or press both the adjusting roller 31 and the fixed roller 33 onto the diaphragm 6, by simultaneously rotating the first support 37 and the second support 38. In some embodiments, there are two driven wheels 36 and two motors 35. One motor 35 drives the first support 37 to rotate through one of the driven wheels 36, and the other motor 35 drives the second support 38 to rotate through the other driven wheel 36. The rotation of the first support 37 and the rotation of the second support 38 do not interfere with each other.

[0033] See Figure 2 and Figure 4 The drive mechanism also includes a drive wheel 39 and a transmission belt 391. The drive wheel 39 is mounted on the base 34. The output end of the motor 35 is connected to the drive wheel 39. The motor 35 can drive the drive wheel 39 to rotate. The transmission belt 391 is sleeved on the drive wheel 39 and the driven wheel 36. When the drive wheel 39 rotates, the transmission belt 391 drives the driven wheel 36 to rotate.

[0034] See Figure 2 , Figure 4 and Figure 5 In some embodiments, the adsorption member 32 is located directly below the driven wheel 36, and the adjusting roller 31 is located below the roller assembly 2. The distance between the adjusting roller 31 and the central axis of the driven wheel 36 is greater than the distance between the adsorption member 32 and the central axis of the driven wheel 36, so that the driving mechanism can press the adjusting roller 31 onto the upper surface of the diaphragm 6 by rotating the adjusting roller 31. When the driving mechanism rotates the adjusting roller 31 above the adsorption member 32, the diaphragm 6 can automatically adhere to the adsorption member 32 due to tension rebound. The distance between the fixed roller 33 and the central axis of the driven wheel 36 is greater than the distance between the adsorption member 32 and the central axis of the driven wheel 36, ensuring that the driving mechanism can rotate the fixed roller 33 to below the adsorption member 32.

[0035] See Figure 2 and Figure 4 In some embodiments, the fixed roller 33 is made of an elastic material, preferably rubber, to ensure that the fixed roller 33 does not damage the diaphragm 6 when it is pressed against it; the fixed roller 33 is a long strip plate structure, the width direction of the fixed roller 33 is in the radial direction of the driven wheel 36, and the length direction of the fixed roller 33 is parallel to the central axis of the adjusting roller 31.

[0036] See Figure 2-5 The drive mechanism is communicatively and / or mechanically connected to the tension detection mechanism 4. The drive mechanism drives the adjusting roller 31 and / or the fixed roller 33 to rotate according to the tension of the tension spring 43, thereby adjusting the tension of the diaphragm 6. In some embodiments, when the tension detection mechanism 4 detects an increase in the tension of the tension spring 43, the drive mechanism drives the adjusting roller 31 and the fixed roller 33 to swing towards the buffer mechanism 5, thereby reducing the tension of the diaphragm 6; when the tension detection mechanism 4 detects a decrease in the tension of the tension spring 43, the drive mechanism drives the adjusting roller 31 and the fixed roller 33 to swing towards the fixed frame 41, thereby increasing the tension of the diaphragm 6, ensuring that the tension of the diaphragm 6 in the battery cell remains within a certain range.

[0037] See Figure 1 and Figure 3The roller assembly 2 includes a rotating mechanism 21, a first roller 22, a second roller 23, and a rotating roller 24. The rotating roller 24 is located between the first roller 22 and the second roller 23. The rotating mechanism 21 drives the rotating roller 24 to swing. The angle between the central axis of the first roller 22 and the central axis of the second roller 23 about the central axis of the rotating roller 24 is 30° to 180°. Preferably, the angle between the central axis of the first roller 22 and the central axis of the second roller 23 about the central axis of the rotating roller 24 is 61° to 90°. The rotating mechanism 21 can drive the rotating roller 24 to swing, so that the angle between the central axis of the first roller 22 and the central axis of the second roller 23 about the central axis of the rotating roller 24 varies within the range of 30° to 180°. In actual production... The diaphragm 6 passes sequentially through the first guide roller 22, the rotating guide roller 24, and the second guide roller 23. The rotating mechanism 21 can adjust the tension on the diaphragm 6 by swinging the rotating guide roller 24. Specifically, when the rotating mechanism 21 drives the rotating guide roller 24 to swing towards the second guide roller 23, the angle between the section of the diaphragm 6 from the first guide roller 22 to the rotating guide roller 24 and the section of the diaphragm 6 from the rotating guide roller 24 to the second guide roller 23 will gradually increase, and the maximum angle can reach 180°. When the rotating mechanism 21 drives the rotating guide roller 24 to swing towards the unwinding mechanism 1, the angle between the section of the diaphragm 6 from the first guide roller 22 to the rotating guide roller 24 and the section of the diaphragm 6 from the rotating guide roller 24 to the second guide roller 23 will gradually decrease, and the minimum angle can reach 30°. The diaphragm auxiliary tail winding device of the stacking machine also includes a buffer mechanism 5, which is used to buffer the diaphragm 6. The buffer mechanism 5 is located in the roller assembly 2. After the diaphragm 6 passes through the second roller 23, it will first enter the buffer mechanism 5 for buffering, then pass through the roller assembly 2 for guidance, and then reach the tension adjustment mechanism 3 from the roller assembly 2.

[0038] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.

[0039] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A diaphragm auxiliary tail winding device for a stacking machine, characterized in that, include: An unwinding mechanism for outputting the diaphragm; A guide roller assembly is disposed on one side of the unwinding mechanism and is used to guide the diaphragm; A tension adjustment mechanism is located on the side of the roller assembly away from the unwinding mechanism and is used to adjust the tension of the diaphragm; A tension detection mechanism is provided, which is arranged adjacent to the tension adjustment mechanism. The tension detection mechanism is used to detect the tension of the diaphragm and control the tension adjustment mechanism to adjust the tension of the diaphragm.

2. The diaphragm auxiliary tail winding device for a stacking machine according to claim 1, characterized in that: The tension detection mechanism includes a fixed frame, a tension sensor, a tension spring, and a damper; One end of the tension spring is fixed to the tension adjustment mechanism, and the other end of the tension spring is pulled by the tension sensor. The tension sensor is connected to the fixed frame and is used to detect the tension of the tension spring. The damper is fixed to the end of the tension sensor and the end of the tension spring that is away from the tension adjustment mechanism.

3. The diaphragm auxiliary tail winding device for a stacking machine according to claim 2, characterized in that: The tension adjustment mechanism includes a drive mechanism and an adjustment roller. The drive mechanism is fixed relative to the end of the tension spring away from the tension sensor. The drive mechanism is connected to the adjustment roller. The drive mechanism drives the adjustment roller to rotate so that the adjustment roller is against or away from the diaphragm.

4. The diaphragm auxiliary tail winding device for a stacking machine according to claim 3, characterized in that: The tension adjustment mechanism further includes an adsorption element and a fixed roller. The adsorption element is fixed relative to the end of the tension spring away from the tension sensor. The adsorption element is used to adsorb the diaphragm. The driving mechanism is connected to the fixed roller. The adsorption element, the adjusting roller and the fixed roller are located on the same plane. The driving mechanism is used to drive the fixed roller to rotate so that the fixed roller clamps the diaphragm between the fixed roller and the adsorption element.

5. The diaphragm auxiliary tail winding device for a stacking machine according to claim 4, characterized in that: The driving mechanism includes a motor, a driven wheel, a first bracket, and a second bracket. The motor is fixed relative to the end of the tension spring away from the tension sensor. The motor drives the driven wheel to rotate. The driven wheel is connected to the first bracket and the second bracket respectively. The first bracket and the second bracket rotate as the driven wheel rotates. The adjusting roller is installed on the first bracket, and the fixed roller is installed on the second bracket.

6. The diaphragm auxiliary tail winding device for a stacking machine according to claim 5, characterized in that: The angle between the central axis of the adjusting roller and the central axis of the fixed roller about the central axis of the driven wheel is 90°.

7. The diaphragm auxiliary tail winding device for a stacking machine according to claim 5, characterized in that: The drive mechanism also includes a drive wheel and a transmission belt. The output end of the motor is connected to the drive wheel, and the transmission belt is sleeved on the drive wheel and the driven wheel.

8. The diaphragm auxiliary tail winding device for a stacking machine according to claim 5, characterized in that: The distance between the adjusting roller and the central axis of the driven wheel is greater than the distance between the adsorption member and the central axis of the driven wheel, and the distance between the fixed roller and the central axis of the driven wheel is greater than the distance between the adsorption member and the central axis of the driven wheel.

9. The diaphragm auxiliary tail winding device for a stacking machine according to claim 4, characterized in that: The driving mechanism is communicatively connected and / or mechanically connected to the tension detection mechanism. The driving mechanism drives the adjusting roller and / or the fixed roller to rotate according to the tension of the tension spring, so as to adjust the tension of the diaphragm.

10. The diaphragm auxiliary tail winding device for a stacking machine according to claim 1, characterized in that: The roller assembly includes a rotating mechanism, a first roller, a second roller, and a rotating roller. The rotating roller is located between the first roller and the second roller. The rotating mechanism drives the rotating roller to swing. The angle between the central axis of the first roller and the central axis of the second roller about the central axis of the rotating roller is 30° to 180°.

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