Film winding apparatus

Abstract

The utility model discloses a film winding equipment, characterized in that it drives the upper and lower clamping assemblies to approach and clamp the roll core respectively by the driving assembly, and at the same time, the electromagnetic locking assembly arranged at the both side end portions of the upper and lower clamping assemblies generates magnetic attraction force after being electrified, so that the end portions of the upper and lower clamping assemblies are adsorbed to each other and form a locking structure, to ensure the stability of the clamping state, finally, the detection module senses the magnetic field intensity in the locking state, and outputs a detection signal to the winding equipment when reaching the preset threshold value, so that the film winding equipment confirms that the roll core has been reliably clamped and starts the winding program, effectively avoiding the equipment damage or personnel danger caused by the roll core loosening.

Description

Technical Field

[0001] This utility model relates to a winding device, and more particularly to a film winding device. Background Technology

[0002] Film winding equipment is widely used in the production of lithium battery separators, packaging films, optical films and various roll materials. Its winding quality is closely related to the clamping stability of the roll core. Generally speaking, during winding, clamping structures located at both ends of the roll core are used in conjunction with cylinders, drive mechanisms or robotic arms to clamp and release the roll core. However, existing clamping mechanisms mostly rely on mechanical blocks, pneumatic propulsion or simple limit coordination. If the clamping action is not fully in place during roll core replacement or high-speed winding, the roll core may loosen during rotation, which can easily lead to equipment damage, film breakage, or even personal injury and other safety accidents.

[0003] To prevent the core from coming loose, existing technologies generally install limit switches, proximity switches, or pressure detection modules on the cylinder or clamping end to determine whether the clamping mechanism is in a clamping state. However, since the core needs to rotate with the turret or support mechanism when changing rolls, the sensors and their connecting wires installed on the moving parts are easily twisted, stretched, or worn, leading to wire breakage, false triggering, or detection failure. In addition, some detection devices require matching commutators, slip rings, or carbon brush assemblies to achieve rotational power supply or signal transmission, which is complex in structure, costly, and has poor durability.

[0004] In addition, existing mechanical clamping structures rely on mechanical force or friction to maintain locking during clamping, lacking sufficient redundancy protection. If the clamping force is insufficient, the mechanism wears out, the vibration is too great, or the positioning is off, clamping failure may still occur. Existing technology also lacks a clamping system that can detect the clamping status from a distance and has a reliable locking and feedback mechanism, making it difficult to meet the safety and stability requirements of high-speed winding equipment.

[0005] Therefore, there is an urgent need for a clamping mechanism that is simplified in structure, reliable in locking, and capable of highly sensitive detection of clamping status, in order to ensure the safe fixation of the core during the winding process and improve the overall operational reliability and production efficiency of the equipment. Utility Model Content

[0006] The purpose of this utility model is to provide a film winding device that forms a complete clamping space based on the upper and lower clamping components, so that the core can obtain full circumferential support in the clamped state, and locks the upper and lower clamping components electromagnetically to improve the overall clamping safety and reliability. At the same time, the locking status is monitored by magnetic field strength to avoid misjudgment caused by mechanical limit or traditional switch due to wear, misalignment, circuit entanglement and other problems.

[0007] To achieve the above objectives, this utility model provides a film winding device, characterized in that it includes:

[0008] A base;

[0009] A core is disposed on the base for winding a film;

[0010] A rotating mechanism, connected to the winding core, is used to drive the winding core to rotate;

[0011] A clamping mechanism is disposed on the base and located on both sides of the winding core for clamping.

[0012] Holding the winding core, the clamping mechanism includes:

[0013] An upper clamping assembly is located above the outer sides of both ends of the winding core and is perpendicular to the winding core. The upper clamping assembly has a first arc-shaped structure formed along the outer periphery of both ends of the winding core.

[0014] A lower clamping assembly is located below the outer sides of both ends of the winding core, perpendicular to the winding core, and positioned opposite to the upper clamping assembly on one side. The lower clamping assembly has a second arc-shaped structure formed along the outer periphery of both ends of the winding core. The clamping space jointly formed by the lower and upper clamping assemblies in the clamping state is used to clamp the outer sides of both ends of the winding core.

[0015] An electromagnetic locking component is respectively disposed on both ends of the upper clamping component and the lower clamping component. When the electromagnetic locking component is energized, it generates a magnetic attraction force, which causes the opposing ends of the upper clamping component and the lower clamping component to attract each other and form a locked state.

[0016] A driving assembly includes a first driving unit and a second driving unit. The first driving unit is electrically connected to the clamping mechanism and is used to drive the upper clamping assembly and the lower clamping assembly to move closer or further away in opposite vertical directions to switch between clamping and releasing states. It also drives the electromagnetic locking assembly to be energized or de-energized to switch between locking and unlocking states. The second driving unit is electrically connected to the rotating mechanism and is used to drive the rotating mechanism to rotate the winding core.

[0017] A detection module, electrically connected to the electromagnetic locking component, is used to sense changes in the magnetic flux of the electromagnetic locking component; and

[0018] A processor is electrically connected to the drive assembly and the detection module respectively. When the winding procedure is executed, the processor transmits a first control signal to the first drive unit to drive the clamping mechanism to clamp the core and controls the electromagnetic locking assembly to be energized so that the clamping mechanism is locked. When the detection module detects that the magnetic field strength reaches a preset threshold, it outputs a detection signal to the processor. At this time, the processor transmits a second control signal to the second drive unit to drive the rotating mechanism to start the winding procedure of the core.

[0019] Preferably, a bearing is included, which is respectively disposed on the outer sides of both ends of the winding core, so that the winding core can rotate between the upper clamping assembly and the lower clamping assembly.

[0020] Preferably, the bearing is selected from any one of ball bearings, needle roller bearings, thrust ball bearings, thrust roller bearings, and tapered roller bearings.

[0021] Preferably, the bearing has elastic clamping layers around its outer and inner peripheries.

[0022] Preferably, the elastic clamping layer is composed of any one of rubber, silicone, polyurethane layer or elastomer coating.

[0023] Preferably, the inner walls of the first arc-shaped structure and the second arc-shaped structure are respectively provided with anti-slip layers. In the clamping state, the anti-slip layers on the inner walls of the upper clamping component and the lower clamping component engage with the elastic clamping layer of the bearing, thereby confining the bearing within the clamping space.

[0024] Preferably, the detection module includes any one of a Hall sensor, a reed sensor, or a magnetoresistive magnetic field sensor.

[0025] Preferably, when the detection module detects that the magnetic field strength of the electromagnetic locking component has not reached the preset threshold, it outputs an alarm signal to the processor, causing the processor to stop operating.

[0026] Preferably, the detection module includes an optical sensor disposed on one side of the roll core and electrically connected to the processor. The sensor is used to emit an optical signal to the roll core to generate thickness information. When the cumulative thickness of the film wound on the roll core exceeds a preset threshold, a stop signal is output to the processor. At this time, the processor transmits a third control signal to the second drive unit to drive the rotating mechanism to stop operating, so that the roll core stops executing the winding procedure.

[0027] Preferably, the detection module includes a position sensor disposed on one side of the clamping mechanism and electrically connected to the processor. The sensor is used to detect the axial offset between the central axis of the core and the central axis of the clamping mechanism, and outputs a position signal to the processor. When the processor determines that the axial offset exceeds a preset range based on the position signal, it transmits a fourth control signal to the first drive unit to drive the upper clamping component and / or the lower clamping component to adjust their positions so that the central axis of the core is aligned with the central axis of the clamping mechanism.

[0028] The beneficial effects of this utility model are that the clamping mechanism formed by the upper and lower clamping components can stably fix the winding core, and the electromagnetic locking component can lock the clamping mechanism into a locked state. The detection module detects the magnetic field strength to confirm whether the locking is in place, and the processor confirms that the preset threshold is reached before starting the rotation mechanism, forming a safe clamping-locking-starting process. Overall, it can improve winding stability, tension consistency, safety and adaptability. Compared with the prior art, this utility model does not require wiring on the rotating parts, avoiding slip ring and carbon brush wear and signal failure problems, and greatly improving the reliability of the equipment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a device according to an embodiment of the present invention; and

[0030] Figure 2 This is a schematic diagram illustrating an embodiment of the present invention. Detailed Implementation

[0031] To make the above and / or other objectives, effects, and features of this utility model more apparent and understandable, preferred embodiments are described in detail below:

[0032] Please see Figures 1 to 2 The figure shows a schematic diagram and implementation diagram of one embodiment of the present invention. As shown in the figure, in one embodiment, the film winding device E includes a base 1, a core 2, a rotating mechanism 3, a clamping mechanism 4, a driving component 5, a detection module 6, and a processor 7. Their connection relationship and operation mode are described below:

[0033] The core 2 is disposed on the base for winding the film, wherein the film is selected from, but not limited to, diaphragms, optical films, protective films, conductive films, base films, barrier films or thin film electrodes.

[0034] The rotating mechanism 3 is connected to the core 2 and is used to drive the core 2 to rotate, so that the core 2 rotates to wind up the film.

[0035] The clamping mechanism 4 is disposed on the base 1 and located on both sides of the core 2. The clamping mechanism 4 is used to clamp the core 2. The clamping mechanism 4 includes an upper clamping component 41, a lower clamping component 42, and an electromagnetic locking component. Its operation method is described in detail below:

[0036] The upper clamping assembly 41 is located above the outer sides of both ends of the core 2 and is perpendicular to the core 2. The upper clamping assembly 41 has a first arc-shaped structure 411 formed along the outer periphery of both ends of the core 2.

[0037] The lower clamping assembly 42 is located below the outer sides of both ends of the core 2 and is perpendicular to the core 2. It is also located on one side of the upper clamping assembly 41. The lower clamping assembly 42 has a second arc-shaped structure 421 formed along the outer periphery of both ends of the core 2.

[0038] Specifically, when in the clamping state, the upper clamping component 41 and the lower clamping component 42 will approach each other in opposite vertical directions, thereby forming a clamping space to clamp the two ends of the core 2 to complete the clamping procedure. When in the releasing state, the upper clamping component 41 and the lower clamping component 42 will move away from each other in opposite vertical directions to release the outer ends of the core to complete the release procedure.

[0039] The clamping mechanism formed by the upper clamping component 41 and the lower clamping component 42 can stably clamp both ends of the core 2 before winding, preventing the core 2 from swaying or sliding during high-speed rotation, significantly improving winding stability and ensuring stable positioning of the core 2.

[0040] Electromagnetic locking components 43 are respectively disposed on both sides of the upper clamping component 41 and the lower clamping component 42. When the electromagnetic locking components 43 are energized, they generate magnetic attraction force, which will cause the opposing sides of the upper clamping component 41 and the lower clamping component 42 to attract each other and form a locking state. This ensures that the core 2 is completely fixed before the winding procedure is performed, and avoids core 2 falling off, film shifting or mechanical damage caused by insufficient clamping.

[0041] The drive assembly 5 includes a first drive unit 51 and a second drive unit 52. The first drive unit 51 is electrically connected to the clamping mechanism 4 and is used to drive the upper clamping assembly 41 and the lower clamping assembly 42 to move closer or further away in opposite vertical directions to switch the clamping state or the release state. It also drives the electromagnetic locking assembly 43 to be energized or de-energized to switch the locking state or the unlocking state. The second drive unit 52 is electrically connected to the rotating mechanism 3 and is used to drive the rotating mechanism 3 to rotate the core 2 to execute the winding procedure.

[0042] The detection module 6 is electrically connected to the electromagnetic locking component 43 and is used to sense the change in magnetic flux of the electromagnetic locking component 43 and obtain its magnetic field strength by comparing it with a preset threshold to determine whether the electromagnetic locking component 43 is in a locked or unlocked state. This can effectively prevent erroneous operation of starting the winding program before the core 2 is stabilized, and improve the safety of equipment operation.

[0043] In one embodiment, the detection module 6 includes, but is not limited to, any one of a Hall sensor, a reed sensor, or a magnetoresistive magnetic field sensor, as long as it can detect changes in the magnetic flux of the electromagnetic locking component 43.

[0044] In one embodiment, when the detection module 6 detects that the magnetic field strength of the electromagnetic locking component 43 has not reached a preset threshold, it outputs an alarm signal to the processor 7, causing the processor 7 to stop operating.

[0045] In one embodiment, the detection module 6 includes an optical sensor 61, which is disposed on one side of the core 2 and electrically connected to the processor 7. The sensor is used to emit optical signals to the core 2 to generate thickness information. When the cumulative thickness of the film wound on the core 2 exceeds a preset threshold, a stop signal is output to the processor 7. This allows the detection of the cumulative thickness change on the outer periphery of the core 2. When the winding thickness reaches the upper limit, a stop signal is automatically issued, which can avoid film stretching, damage or equipment jamming caused by over-winding.

[0046] In one embodiment, the detection module 6 includes a position sensor 62, which is disposed on one side of the clamping mechanism 4 and electrically connected to the processor 7. It is used to detect the axial offset between the central axis of the core 2 and the central axis of the clamping mechanism 4, and outputs a position signal to the processor 7. This enables the clamping mechanism 4 and the core 2 to be automatically aligned, ensuring uniform winding tension, flat film winding, and reducing wrinkles and edge curling.

[0047] The processor 7 is electrically connected to the drive assembly 5 and the detection module 6 respectively. When the winding program is executed, the processor 7 transmits a first control signal to the first drive unit 51 to drive the clamping mechanism 4 to clamp the core 2, and controls the electromagnetic locking assembly 43 to be energized so that the clamping mechanism 4 is locked. When the detection module 6 detects that the magnetic field strength reaches a preset threshold, it outputs a detection signal to the processor 7. At this time, the processor 7 transmits a second control signal to the second drive unit 52 to drive the rotating mechanism 3 so that the core 2 starts to execute the winding program.

[0048] In one embodiment, when the optical sensor 61 outputs a stop signal to the processor 7, the processor 7 will transmit a third control signal to the second drive unit 52 to drive the rotating mechanism 3 to stop operating, so that the core 2 stops executing the winding procedure.

[0049] In one embodiment, when the position sensor 62 outputs a position signal to the processor 7, the processor 7 determines that the axial offset exceeds a preset range based on the position signal, and transmits a fourth control signal to the first drive unit 51 to drive the upper clamping component 41 and / or the lower clamping component 42 to adjust their positions so that the central axis of the core 2 is aligned with the central axis of the clamping mechanism 4, thereby increasing the clamping accuracy of the clamping mechanism 4.

[0050] In one embodiment, the film winding device E further includes bearings 8, which can be respectively disposed on the outer sides of both ends of the core 2, so that the core 2 can rotate between the upper clamping assembly 41 and the lower clamping assembly 42, wherein the bearings 8 are selected from any one of ball bearings, needle roller bearings, thrust ball bearings, thrust roller bearings, and tapered roller bearings.

[0051] In one embodiment, the bearing 8 is provided with an elastic clamping layer around its outer periphery and inner periphery. Preferably, the elastic clamping layer is composed of any one of rubber, silicone, polyurethane layer or elastomer coating.

[0052] In one embodiment, the inner walls of the first arc-shaped structure 411 and the second arc-shaped structure 421 are respectively provided with anti-slip layers. In the clamping state, the anti-slip layers on the inner walls of the upper clamping component 41 and the lower clamping component 42 engage with the elastic clamping layer of the bearing 8, thereby confining the bearing 8 within the clamping space and thus fastening the core 2 to provide a stable torque transmission path, preventing the core 2 from slipping when starting to rewind, and effectively improving the drive rotation efficiency.

[0053] In summary, this utility model, with its film winding device, can provide a stable core fixation effect before winding and complete the necessary safety confirmation before starting winding to ensure that the core is in a reliable controlled state before proceeding with the winding process. It also has the ability to automatically determine the locking strength, which can avoid core displacement, slippage or fall-off due to insufficient clamping, thereby significantly improving operational safety and meeting the purpose of this utility model.

[0054] However, the above description is only a preferred embodiment of the present utility model, but it cannot be used to limit the scope of patent protection of the present utility model; therefore, any simple equivalent changes and modifications made in accordance with the scope of patent protection and the contents of the specification of the present utility model shall still fall within the scope of patent protection of the present utility model.

Claims

1. A film winding device, characterized in that, include: A base; A core is disposed on the base for winding a film; A rotating mechanism, connected to the winding core, is used to drive the winding core to rotate; A clamping mechanism is disposed on the base and located on both sides of the winding core for clamping the winding core. The clamping mechanism includes: An upper clamping assembly is located above the outer sides of both ends of the winding core and is perpendicular to the winding core. The upper clamping assembly has a first arc-shaped structure formed along the outer periphery of both ends of the winding core. A lower clamping assembly is located below the outer sides of both ends of the winding core, perpendicular to the winding core, and positioned opposite to the upper clamping assembly on one side. The lower clamping assembly has a second arc-shaped structure formed along the outer periphery of both ends of the winding core. The clamping space jointly formed by the lower and upper clamping assemblies in the clamping state is used to clamp the outer sides of both ends of the winding core. An electromagnetic locking component is respectively disposed on both ends of the upper clamping component and the lower clamping component. When the electromagnetic locking component is energized, it generates a magnetic attraction force, which causes the opposing ends of the upper clamping component and the lower clamping component to attract each other and form a locked state. A driving assembly includes a first driving unit and a second driving unit. The first driving unit is electrically connected to the clamping mechanism and is used to drive the upper clamping assembly and the lower clamping assembly to move closer or further away in opposite vertical directions to switch between clamping and releasing states. It also drives the electromagnetic locking assembly to be energized or de-energized to switch between locking and unlocking states. The second driving unit is electrically connected to the rotating mechanism and is used to drive the rotating mechanism to rotate the winding core. A detection module, electrically connected to the electromagnetic locking component, is used to sense changes in the magnetic flux of the electromagnetic locking component; and A processor is electrically connected to the drive assembly and the detection module respectively. When the winding procedure is executed, the processor transmits a first control signal to the first drive unit to drive the clamping mechanism to clamp the core and controls the electromagnetic locking assembly to be energized so that the clamping mechanism is locked. When the detection module detects that the magnetic field strength reaches a preset threshold, it outputs a detection signal to the processor. At this time, the processor transmits a second control signal to the second drive unit to drive the rotating mechanism to start the winding procedure of the core.

2. The film winding equipment as described in claim 1, characterized in that, It includes a bearing, which is respectively disposed on the outer sides of both ends of the winding core, so that the winding core can rotate between the upper clamping assembly and the lower clamping assembly.

3. The film winding equipment as described in claim 2, characterized in that, The bearing is selected from any one of ball bearings, needle roller bearings, thrust ball bearings, thrust roller bearings, and tapered roller bearings.

4. The film winding equipment as described in claim 2, characterized in that, The bearing is provided with elastic clamping layers around its outer and inner periphery.

5. The film winding equipment as described in claim 4, characterized in that, The elastic clamping layer is composed of any one of rubber, silicone, polyurethane layer or elastomer coating.

6. The film winding device as described in claim 4, characterized in that, The inner walls of the first arc-shaped structure and the second arc-shaped structure are respectively provided with anti-slip layers. In the clamping state, the anti-slip layers on the inner walls of the upper clamping component and the lower clamping component engage with the elastic clamping layer of the bearing, thereby confining the bearing within the clamping space.

7. The film winding equipment as described in claim 1, characterized in that, The detection module includes any one of a Hall sensor, a reed sensor, or a magnetoresistive magnetic field sensor.

8. The film winding equipment as described in claim 1, characterized in that, When the detection module detects that the magnetic field strength of the electromagnetic locking component has not reached the preset threshold, it outputs an alarm signal to the processor, causing the processor to stop operating.

9. The film winding equipment as described in claim 1, characterized in that, The detection module includes an optical sensor disposed on one side of the roll core and electrically connected to the processor. It is used to emit an optical signal to the roll core to generate thickness information. When the cumulative thickness of the film wound on the roll core exceeds a preset threshold, a stop signal is output to the processor. At this time, the processor transmits a third control signal to the second drive unit to drive the rotating mechanism to stop operating, so that the roll core stops executing the winding procedure.

10. The film winding device as described in claim 1, characterized in that, The detection module includes a position sensor disposed on one side of the clamping mechanism and electrically connected to the processor. It is used to detect the axial offset between the central axis of the core and the central axis of the clamping mechanism, and outputs a position signal to the processor. When the processor determines that the axial offset exceeds a preset range based on the position signal, it transmits a fourth control signal to the first drive unit to drive the upper clamping component and / or the lower clamping component to adjust their positions so that the central axis of the core is aligned with the central axis of the clamping mechanism.

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