Winding and unwinding clamping device and winding and unwinding equipment

Abstract

The invention relates to a winding and unwinding clamping device and winding and unwinding equipment. The winding and unwinding clamping device comprises a clamping head, a winding and unwinding device and a winding and unwinding device, wherein a cavity is formed in the clamping head; the driving rod can be movably arranged in the cavity in the axial direction of the chuck, and one end of the driving rod is provided with a conical part; the at least one tensioning assembly comprises an ejector block capable of moving in the radial direction of the chuck, one end of the ejector block extends into the chuck and is matched with the conical surface of the conical part, and the other end of the ejector block extends out of the chuck; and when the driving rod moves in the axial direction of the chuck, the ejecting block can be driven to eject outwards in the radial direction of the chuck so as to tension the material coil. According to the scheme provided by the invention, the problems of insufficient clamping force and out-of-control stall caused by overlarge inertia of the material coil can be solved.

Description

Technical Field

[0001] This application relates to the field of battery electrode production technology, and in particular to winding and unwinding clamping devices and winding and unwinding equipment. Background Technology

[0002] In the lithium battery production process, winding and unwinding equipment is a commonly used and critical piece of equipment in electrode processing, responsible for releasing and recycling the electrodes. As the carrier of new energy power, the operational safety and reliability of lithium battery electrodes during the winding and unwinding process are of paramount importance.

[0003] In related technologies, the stable control of the material roll is usually achieved by rotating the chuck and holding it with the jaws.

[0004] However, in actual operation, due to the large inertia of the material roll itself, the existing gripper structure often cannot provide sufficient clamping force, which can easily lead to the material roll stalling or even going out of control, bringing production safety hazards. Summary of the Invention

[0005] To solve or partially solve the problems existing in the related technologies, this application provides a winding and unwinding clamping device and winding and unwinding equipment, which can solve the problems of insufficient clamping force and stalling and runaway caused by excessive inertia of the material roll.

[0006] The first aspect of this application provides a winding and unwinding clamping device, comprising: A chuck, wherein a cavity is formed inside the chuck; A drive rod is movably disposed within the cavity along the axial direction of the chuck, and one end of the drive rod has a tapered portion; At least one tensioning assembly, the at least one tensioning assembly including a top block movable radially along the chuck, one end of the top block extending into the chuck and engaging with the conical surface of the tapered portion, and the other end extending out of the chuck; and, when the drive rod moves axially along the chuck, it can drive the top block to be pushed out radially outward along the chuck to tension the coil.

[0007] As an optional embodiment, the drive rod includes a drive rod and a tapered rod that are coaxially arranged and connected to each other, the tapered rod having the tapered portion at the end away from the drive rod.

[0008] As an optional embodiment, the chamber includes a first cavity and a second cavity coaxially arranged and interconnected, the inner diameter of the second cavity being smaller than the inner diameter of the first cavity, and the two cavities forming a stepped structure at the connection; the active rod includes a first rod and a second rod coaxially arranged and interconnected, the outer diameter of the second rod being smaller than the outer diameter of the first rod, and the second rod being connected to the tapered rod; and the first rod can move axially along the clamp to abut against the stepped structure.

[0009] As an optional embodiment, the winding and unwinding clamping device further includes a detection mechanism for detecting whether the drive rod has moved to a preset position.

[0010] As an optional embodiment, the testing mechanism includes: A transmitter, one end of which is connected to the drive rod, and the other end extends out of the clamp; A receiver is provided at the preset position and is used to receive a signal from the transmitter when the transmitter moves to the preset position along the axial direction of the chuck with the drive rod.

[0011] As an optional embodiment, the chuck is provided with a retaining ring protruding along its outer circumference. The retaining ring can be matched with the end face of the material roll to limit the movement of the chuck along its axial direction.

[0012] As an optional embodiment, the retaining ring and the end face of the chuck form at least one receiving groove, and the top block is movably disposed in the receiving groove along the radial direction of the chuck.

[0013] As an optional embodiment, the top block has a recessed mounting groove at one end away from the tapered portion, and a tensioning member is embedded in the mounting groove. The tensioning member can be pushed out radially outward along the chuck with the top block to tension the material roll.

[0014] As an optional embodiment, the chuck has an air intake channel communicating with the chamber, and the end of the drive rod away from the tapered portion is positioned relative to the air intake channel; or, the winding and unwinding clamping device further includes a drive mechanism, the output end of which is connected to the drive rod and is used to drive the drive rod to move along the axial direction of the chuck.

[0015] A second aspect of this application provides a winding and unwinding device, comprising: The frame, and the aforementioned take-up and untake-up clamping device, wherein the take-up and untake-up clamping device is movably mounted on the frame.

[0016] The technical solution provided in this application may include the following beneficial results: This application utilizes a conical joint structure between the conical portion and the top block to efficiently amplify axial force and convert it into radial tension force. Ultimately, the radially ejected top block reliably and uniformly clamps the high-inertia roll, preventing roll stall and loss of control, and improving the safety and reliability of the lithium battery electrode winding and unwinding process. Furthermore, the key drive and execution components in this application's embodiments are integrated within the chuck, resulting in a compact structure that does not occupy additional space.

[0017] 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

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the material waiting state of the take-up and unwinding equipment shown in the embodiments of this application; Figure 2 yes Figure 1 A magnified view of a portion of the image; Figure 3 This is a schematic diagram of the feeding state of the winding and unwinding equipment shown in the embodiments of this application; Figure 4 yes Figure 3 A magnified view of a portion of the image; Figure 5 yes Figure 3 A sectional view; Figure 6 yes Figure 5 A magnified view of a portion of the image; Figure 7 This is a magnified view of the chuck pushing the coil into place; Figure 8 This is a magnified view of a section of the clamped tensioned coil.

[0020] Figure label: 1. Chuck; 10. Chamber; 100. First Chamber; 101. Second Chamber; 102. Stepped Structure; 11. Air Inlet Channel; 12. Retaining Ring; 2. Drive Rod; 20. Active Rod; 200. First Rod Body; 201. Second Rod Body; 21. Tapered Rod; 22. Tapered Section; 3. Tensioning Assembly; 30. Top Block; 31. Mounting Slot; 32. Tensioning Component; 33. Guide Component; 4. Material Roll; 5. Detection Mechanism; 50. Transmitter; 51. Receiver; 6. Frame; 7. Bracket; 70. Support Part; 71. Slot; 72. Stopping Component; 8. Moving Support Arm; 9. Position Detector. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] In related technologies, the stable control of the material roll is usually achieved by rotating the chuck and holding it with the jaws.

[0026] However, in actual operation, due to the large inertia of the material roll itself, the existing gripper structure often cannot provide sufficient clamping force, which can easily lead to the material roll stalling or even going out of control, bringing production safety hazards.

[0027] To address the aforementioned problems, this application provides a winding and unwinding clamping device that can solve the problems of insufficient clamping force and stalling / loss of control caused by excessive inertia of the material roll.

[0028] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0029] See Figure 3 and Figure 5This application provides a winding and unwinding clamping device, including a clamp 1, a drive rod 2, and at least one tensioning component 3. The clamp 1 has a cavity 10. The drive rod 2 is movably disposed in the cavity along the axial direction of the clamp 1, and one end of the drive rod 2 has a tapered portion 22. The at least one tensioning component 3 includes a top block 30 that can move radially along the clamp 1. One end of the top block 30 extends into the clamp 1 and engages with the tapered surface of the tapered portion 22, and the other end extends out of the clamp 1. When the drive rod 2 moves along the axial direction of the clamp 1, it can drive the top block 30 to be pushed out radially outward along the clamp 1 to tension the material roll 4.

[0030] In this embodiment, the driving source for the axial movement of the drive rod 2 can be compressed air drive or screw drive, etc., and this application is not limited to this. Through the engagement of the tapered portion 22 with the tapered surface of the top block 30, the force is efficiently converted into radial thrust acting on the top block 30. This tapered inclined surface structure itself has a force-amplifying effect, amplifying the axial force generated within the chamber 10. After receiving the radial thrust, the top block 30 pushes outward directly, acting on the inner wall of the material roll 4. This direct radial support method has a large contact area and uniform force distribution, providing a stable and reliable clamping force sufficient to overcome the centrifugal force and inertial force of the material roll, preventing slippage and stalling.

[0031] The working principle of the winding and unwinding clamping device in this embodiment is as follows: Drive rod 2 is pushed out towards the material roll by the drive source. The top block 30 is pushed out radially upward along the chuck 1 by the sliding friction of the inclined surface under the push of drive rod 2, and presses against the inner wall of the material roll 4, so that the chuck 1 is in a tensioned state, and can be unwound or rewound.

[0032] After the unwinding or rewinding operation is completed, the drive rod 2 retracts away from the material roll under the action of the drive source, and the top block 30 retracts downward under the push of the drive rod 2, releasing the material roll 4 and putting the chuck 1 in the disengaged state, so that the unloading operation can be carried out.

[0033] In this embodiment, the axial force is efficiently amplified and converted into radial tension force through the conical mating structure of the conical part 22 and the top block 30. Finally, the radially ejected top block 30 reliably and uniformly clamps the large-inertia roll, avoiding roll stall and loss of control, and improving the safety and reliability of the lithium battery electrode winding and unwinding process. Moreover, the key drive and execution components in this embodiment are all integrated into the chuck 1, resulting in a compact structure that does not occupy additional space.

[0034] As an optional embodiment, see Figures 6 to 8 The drive rod 2 includes a drive rod 20 and a tapered rod 21 that are coaxially arranged and connected to each other. The tapered rod 21 has a tapered portion 22 at the end away from the drive rod 20.

[0035] In this embodiment, the active rod 20 is used to transmit axial force. To ensure good airtightness, the outer diameter of the active rod 20 can be designed to fit the inner wall of the chamber 10. The tapered rod 21 can perform force conversion, which is achieved by providing a tapered portion 22 at the end of the tapered rod 21 away from the active rod 20.

[0036] This embodiment of the application, by designing the drive rod 2 as a separate unit, allows for independent material selection and replacement of the drive rod 20 and the tapered rod 21. For example, the drive rod 20 can be made of a high-strength material to provide sufficient strength to withstand the driving force of the drive source; while the tapered rod 21 can be made of a wear-resistant material to avoid damage caused by repeated friction between the tapered rod 21 and the tapered portion 22.

[0037] As a preferred embodiment, see Figure 6 The chamber 10 includes a first chamber 100 and a second chamber 101 that are coaxially arranged and interconnected. The inner diameter of the second chamber 101 is smaller than the inner diameter of the first chamber 100, and the two chambers form a stepped structure 102 at the connection. The active rod 20 includes a first rod 200 and a second rod 201 that are coaxially arranged and interconnected. The outer diameter of the second rod 201 is smaller than the outer diameter of the first rod 200, and the second rod 201 is connected to the tapered rod 21. The first rod 200 can move along the axial direction of the chuck 1 to abut against the stepped structure 102.

[0038] This embodiment of the application limits the axial movement limit of the drive rod 2 under gas pressure by setting the stepped structure 102 to engage with the end face of the first rod 200. This ensures that the displacement of the drive rod 2 is precise and fixed, thereby controlling the maximum radial stroke of the top block 30. Excessive displacement of the drive rod 2 and the top block 30 can be prevented when the gas pressure is too high or fluctuates unexpectedly, thus avoiding excessive compression or even damage to the inner wall of the material roll 4.

[0039] As an optional embodiment, see Figures 1 to 4 The winding and unwinding clamping device also includes a detection mechanism 5, which is used to detect whether the drive rod 2 has moved to a preset position.

[0040] The detection mechanism 5 in this embodiment can directly detect whether the drive rod 2 has reached a preset position. The preset position corresponds to the state where the top block 30 has fully expanded and reliably clamped the material roll 4.

[0041] As a preferred embodiment, see Figures 5 to 8 The detection mechanism 5 includes a transmitter 50 and a receiver 51. One end of the transmitter 50 is connected to the drive rod 2, and the other end extends out of the chuck 1. The receiver 51 is set in a preset position and is used to receive the signal from the transmitter 50 when the transmitter 50 moves to the preset position along the axial direction of the chuck 1 with the drive rod 2.

[0042] This application embodiment provides an emitter 50 that operates synchronously with the drive rod 2 to detect whether the top block 30 inside the material roll 4 is ejected or retracted during the tightening or contraction of the chuck 1. The end of the emitter 50 away from the drive rod 2 extends outside the chuck 1, allowing for external detection of the chuck 1's status. This prevents the top block 30 from being unable to be ejected due to jamming of the internal drive rod 2, thus avoiding safety hazards and production losses caused by the material roll 4 not being tightened and clamped.

[0043] Furthermore, in this embodiment, the transmitter 50 and receiver 51 employ non-contact detection (such as magnetic induction or photoelectric detection), avoiding the physical contact and wear problems present in mechanical limit switches. The receiver 51 can be installed outside the chuck 1, reducing the complexity of the chuck 1 structure and facilitating installation and maintenance.

[0044] As an optional embodiment, see Figure 2 , Figure 4 , Figures 6 to 8 The chuck 1 is provided with a retaining ring 12 protruding along its outer circumference. The retaining ring 12 can be matched with the end face of the material roll 4 to limit the movement of the chuck 1 along its axial direction.

[0045] In this embodiment, when the chuck 1 is inserted into the roll 4, the retaining ring 12 restricts the depth to which the chuck 1 penetrates into the roll 4 by contacting the end face of the roll 4. This ensures that the tensioning component 3 on the chuck 1 is always in the designed working position on the inner wall of the roll 4, avoiding the problem of uneven load and contact due to the chuck 1 being inserted too deeply or too shallowly, thus preventing effective tensioning. Moreover, when the operator installs the roll, they only need to push the chuck 1 into the roll 4 until the retaining ring 12 contacts the end face of the roll 4, achieving quick and accurate positioning in one go and improving roll changing efficiency.

[0046] As a preferred embodiment, see Figures 6 to 8 The retaining ring 12 and the end face of the chuck 1 form at least one receiving groove, and the top block 30 is movably disposed in the receiving groove along the radial direction of the chuck 1.

[0047] In this embodiment, the receiving groove is naturally formed by the protruding structure of the retaining ring 12, eliminating the need to additionally machine deep holes or grooves on the chuck 1, thus improving the compactness of the chuck 1 structure.

[0048] Preferably, in this embodiment, there are multiple tensioning components 3, which are arranged circumferentially along the receiving groove. This can provide a uniform radial clamping force, ensuring reliable clamping. Multiple tensioning components 3 operate simultaneously, pushing outward synchronously from multiple circumferential directions, applying a uniformly distributed radial pressure to the inner wall of the material roll 4.

[0049] As an optional embodiment, see Figures 6 to 8The top block 30 is recessed at one end away from the conical part 22, and a tensioning member 32 is embedded in the mounting groove 31. The tensioning member 32 can be pushed out radially along the clamp 1 with the top block 30 to tension the material roll 4.

[0050] In this embodiment, the top block 30 and the tensioner 32 are designed separately. This allows the top block 30 to be made of a high-strength, high-rigidity material to withstand the enormous internal compressive force, while the tensioner 32 can be made of a wear-resistant and tough material (such as rubber) to fit the inner wall of the material roll 4 and prevent damage to the material roll 4. Moreover, as a consumable part, the tensioner 32 can be replaced separately after long-term wear.

[0051] Preferably, in this embodiment, the tensioner 32 extends beyond the mounting groove 31. This ensures effective contact and force transmission between the tensioner 32 and the inner wall of the coil 4. If the end face of the tensioner 32 is flush with or even recessed from the mounting groove 31, the edge of the mounting groove 31 will contact the inner wall of the coil 4 before the tensioner 32 during the initial ejection phase of the top block 30. This results in a portion of the ejection stroke being consumed in filling the gap, while the tensioner 32 itself is not sufficiently stressed and cannot provide effective friction.

[0052] As an optional embodiment, see Figures 6 to 8 The tensioning assembly 3 also includes a guide 33, which is located on the side of the top block 30 near the conical portion 22; and the guide 33 has a guide slope that is adapted to the conical surface of the conical portion 22.

[0053] In this embodiment, the guide slope of the guide member 33 is adapted to the conical surface of the conical part 22, which can reduce the stress on the contact surface, and the large area of ​​surface contact allows the axial force transmitted from the drive rod 2 to be transmitted to the top block 30 more smoothly and evenly.

[0054] As an optional embodiment, see Figures 6 to 8 The chuck 1 is also provided with an air intake channel 11 that communicates with the chamber 10, and the end of the drive rod 2 away from the conical part 22 is positioned relative to the air intake channel 11.

[0055] In this embodiment, compressed gas is introduced into the air intake channel 11, and the gas pressure directly acts on one end of the drive rod 2, driving it to generate axial movement. This pneumatic drive method has a rapid response and can provide an initial thrust that is much greater than that of traditional mechanical or spring-based methods, ensuring sufficient clamping force from the power source.

[0056] In this embodiment, the application and release of the clamping force of the chuck 1 can be controlled by the on / off flow of gas, facilitating integration with the production line control system and enabling automated operation. When it is necessary to tighten the material roll 4, simply introduce gas, and the drive rod 2 moves under the push of compressed air, causing the top block 30 to push out from the inner wall of the tightened material roll 4, providing sufficient clamping force; when releasing the material roll 4, simply release the air pressure, the drive rod 2 retracts, and the top block 30 then retracts radially, enabling rapid unloading.

[0057] Additionally, the end of the active lever 20 near the intake channel 11 can be configured as a recessed structure to provide reserved space to receive compressed gas input from the intake channel 11.

[0058] As an optional embodiment, this application embodiment also includes a pressure detection device. The pressure detection device detects the pressure inside the chamber 10 and ensures that the pressure in the chamber 10 reaches a set value to ensure the tension of the clamp 1. It can also monitor the pressure status at all times during production to prevent the failure of the material roll 4 to be clamped due to abnormal compressed air supply during production.

[0059] As an optional embodiment, the winding and unwinding clamping device further includes a drive mechanism, the output end of which is connected to the drive rod 2 and is used to drive the drive rod 2 to move along the axial direction of the clamp 1.

[0060] In this embodiment, the drive mechanism can be a motor + lead screw and nut pair. The lead screw is arranged along the axial direction of the chuck 1 and is connected to the motor drive; the nut is threadedly connected to the lead screw and is connected to the drive rod 2; when the motor drives the lead screw to rotate, it can drive the nut to move along the axial direction of the lead screw, thereby driving the drive rod 2 to move along the axial direction of the chuck 1.

[0061] As an optional embodiment, the inclination angle of the conical surface of the conical portion 22 is 12°~14°, and the coefficient of friction of the conical surface of the conical portion 22 is 0.1~0.12.

[0062] This embodiment of the application, through the use of inclined surface adaptation, can convert a small axial driving force into a large radial output force. The smaller the inclination angle of the conical surface of the conical part 22, the more significant the force amplification effect.

[0063] Self-locking is achieved through the combination of tilt angle and friction coefficient: when the axial force is removed, the top block 30 will not automatically release under the radial force generated by the material coil 4 attempting to retract, thus forming a self-locking mechanism. This is because the combination of tilt angle and friction coefficient makes the frictional resistance that the reverse push generated by the material coil 4 needs to overcome very large. Therefore, it can prevent the top block 30 from retracting in the event of a sudden cutoff of compressed air supply, which could lead to loss of control of the material coil and cause production losses or safety hazards.

[0064] Corresponding to the aforementioned application function implementation device embodiments, this application also provides a winding and unwinding device and corresponding embodiments.

[0065] See Figure 1 and Figure 3 This application embodiment also provides a take-up and unwinding device, including a frame 6 and the aforementioned take-up and unwinding clamping device, which is movably mounted on the frame 6.

[0066] In this embodiment, the winding and unwinding equipment further includes a bracket 7 and a movable support arm 8. The bracket 7 is connected to the frame 6, and a support portion 70 is provided at the end of the bracket 7 away from the frame 6. The support portion 70 has a recessed groove 71 for supporting the material roll 4, and a stop member 72 is provided on one side of the groove 71. The groove 71 is built into the position detector 9. The movable support arm 8 is movably mounted on the frame 6 along the axial direction of the frame 6, and the chuck 1 is rotatably connected to the movable support arm 8.

[0067] The bracket 7 serves as a support device for loading and unloading the material roll 4. The slot 71 is used to place and position the material roll 4 so that it remains coaxial with the chuck 1. The stop 72 is used to restrict the axial movement of the material roll 4 and prevent the material roll 4 from accidentally moving axially when the chuck 1 extends or retracts, which could cause the material roll 4 to fall off the slot 71 and create a risk of it falling.

[0068] The position detector 9 is used to detect whether the material roll 4 is in the tray 71, and provides a signal to the automatic clamping and tightening action program of the chuck 1. It can also detect the material roll being accidentally pushed axially due to the failure of the stop 72 when the chuck 1 extends and retracts. If the position detector 9 detects that the material roll 4 is not in the detection range, the pusher of the chuck 1 will trigger an emergency stop program to stop the material roll 4 from moving and prevent the material roll 4 from slipping out of the tray 71 and falling.

[0069] The movable support arm position detector can be fixed on the frame 6 to detect the position of the movable support arm 8, ensuring that the chuck 1 reaches the accurate position of the material roll clamping position and the retraction position.

[0070] In this embodiment, loading and unloading can be performed by AGV / loading vehicle. After the AGV / loading vehicle loads the material roll 4 onto the designated bracket 7, it can start the automatic winding and unwinding process. Because the material roll 4 is heavy and has great inertia, the status and position of the material roll during automatic operation need to be monitored and controlled. The material roll 4 on the bracket 7 will undergo actions such as chuck insertion, chuck tightening, chuck rotation, chuck retraction, and chuck retraction.

[0071] The feeding process involves clamping, unwinding, or rewinding the material: The feeding trolley places the material roll 4 on the bracket 7, with the outer wall of the material roll 4 contacting the tray 71. Both ends of the material roll 4 are bound within the material roll stop 72. At this time, the position detector 9 senses that the material roll 4 is in position. Under the action of the pusher, the moving arm 8 moves axially along the frame 6 to push the chuck 1 into the material roll 4. The position detector of the moving arm, fixed on the frame, detects that the moving arm 8 has reached the set position. At this time, the chuck 1 presses against the end face of the material roll 4. Compressed air enters from the air inlet channel 11 and reaches the chamber 10. The drive rod 2 is pushed out axially by the compressed air. The transmitter 50 is mechanically connected to the conical rod 21 and moves axially along with the conical rod 21. When the receiver 51 receives a signal from the transmitter 50, it indicates that the drive rod 2 has moved to the preset position. At this time, the top block 30 pushes out radially along the chuck 1 to make the tensioning member 32 tighten the material roll 4 and press against the inner wall of the material roll 4. Under the pushing force of the tensioner 32, the material roll 4 is lifted upward and leaves the tray 71. The control system detects whether the pressure in the chamber 10 meets the requirements for safe production through the pressure detection device. After the pressure reaches the set value, the chuck 1 performs unwinding or rewinding under the drive device.

[0072] After the unwinding or rewinding operation is completed: the pneumatic system discharges the compressed air in the chamber 10, causing the drive rod 2 to retract, the top block 30 and the tensioner 32 to retract downwards, and the transmitter 50 is retracted along with the conical rod 21. The receiver 51 cannot receive the signal from the transmitter 50, indicating that the top block 30 has retracted. The material roll 4 falls onto the tray 71 under the action of gravity. The moving arm 8 moves along the axial direction of the frame 6 under the action of the pusher to remove the chuck 1 from the material roll 4. The moving arm position detector detects that the moving arm 8 has retracted into place. At this time, the chuck 1 retracts to wait for the unloading operation to be completed.

[0073] 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.

[0074] 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 winding and unwinding clamping device, characterized in that, include: A chuck (1) is provided with a chamber (10) inside the chuck (1); A drive rod (2) is movably disposed in the cavity along the axial direction of the chuck (1), and one end of the drive rod (2) has a tapered portion (22). At least one tensioning assembly (3), the at least one tensioning assembly (3) includes a top block (30) that is radially movable along the chuck (1), one end of the top block (30) extending into the chuck (1) and engaging with the conical surface of the tapered portion (22), and the other end extending out of the chuck (1); and, when the drive rod (2) moves axially along the chuck (1), it can drive the top block (30) to be radially pushed outward along the chuck (1) to tension the roll (4).

2. The winding and unwinding clamping device according to claim 1, characterized in that, The drive rod (2) includes a drive rod (20) and a tapered rod (21) that are coaxially arranged and connected to each other, and the tapered rod (21) has the tapered portion (22) at the end away from the drive rod (20).

3. The winding and unwinding clamping device according to claim 2, characterized in that, The chamber (10) includes a first chamber (100) and a second chamber (101) that are coaxially arranged and interconnected. The inner diameter of the second chamber (101) is smaller than the inner diameter of the first chamber (100), and the two chambers form a stepped structure (102) at the connection. The active rod (20) includes a first rod (200) and a second rod (201) that are coaxially arranged and interconnected. The outer diameter of the second rod (201) is smaller than the outer diameter of the first rod (200), and the second rod (201) is connected to the tapered rod (21). The first rod (200) can move along the axial direction of the clamp (1) to abut against the stepped structure (102).

4. The winding and unwinding clamping device according to claim 1, characterized in that, The winding and unwinding clamping device also includes a detection mechanism (5), which is used to detect whether the drive rod (2) has moved to a preset position.

5. The winding and unwinding clamping device according to claim 4, characterized in that, The testing organization (5) includes: The transmitter (50) has one end connected to the drive rod (2) and the other end extending out of the clamp (1); Receiver (51), the receiver (51) is set at the preset position, and the receiver (51) is used to receive the signal from the transmitter (50) when the transmitter (50) moves to the preset position along the axial direction of the chuck (1) with the drive rod (2).

6. The winding and unwinding clamping device according to claim 1, characterized in that, The chuck (1) has a retaining ring (12) protruding along its outer circumference. The retaining ring (12) can be matched with the end face of the material roll (4) to limit the movement of the chuck (1) along its axial direction.

7. The winding and unwinding clamping device according to claim 6, characterized in that, The retaining ring (12) and the end face of the chuck (1) form at least one receiving groove, and the top block (30) is movably disposed in the receiving groove along the radial direction of the chuck (1).

8. The winding and unwinding clamping device according to claim 1, characterized in that, The top block (30) has a recessed mounting groove (31) at one end away from the tapered part (22). A tensioning member (32) is embedded in the mounting groove (31). The tensioning member (32) can be pushed out radially along the clamp (1) with the top block (30) to tighten the material roll (4).

9. The winding and unwinding clamping device according to claim 1, characterized in that, The chuck (1) has an air intake channel (11) that communicates with the chamber (10), and the end of the drive rod (2) away from the tapered part (22) is positioned relative to the air intake channel (11); or, the winding and unwinding clamping device further includes a drive mechanism, the output end of which is connected to the drive rod (2) and is used to drive the drive rod (2) to move along the axial direction of the chuck (1).

10. A winding and unwinding device, characterized in that, include: The frame (6) and the take-up and unwinding clamping device as described in any one of claims 1 to 8, the take-up and unwinding clamping device being movably disposed on the frame (6).

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