Special rewinding equipment for capacitor film

Abstract

The utility model discloses a kind of rewinding equipment special for capacitor film, to provide a kind of in capacitor film rewinding process, the pressure of capacitor film roll on which can be stably and accurately controlled pressure roller action on winding core, to improve the rewinding quality of a kind of rewinding equipment special for capacitor film of capacitor film.It includes frame, pressure roller device and winding device, winding device includes: sliding seat, along horizontal direction sliding is established on frame;Winding capacitor film's winding core, is established on sliding seat, the axial direction of winding core is perpendicular to the sliding direction of sliding seat;Translation drive mechanism, drive sliding seat translation;Pressure roller device includes: vertically extending pressure roller arm, rotation is established on frame;Pressure roller, rotation is established on pressure roller arm, pressure roller is parallel with winding core;Pressure roller arm drive mechanism, drive pressure roller arm rotation, so that pressure roller is pressed on winding core or the capacitor film of winding core.

Description

Technical Field

[0001] This utility model relates to the technical field of capacitor film manufacturing equipment, specifically to a special rewinding equipment for capacitor film. Background Technology

[0002] A dedicated rewinding machine for capacitor film is used to rewind capacitor film rolls with uneven end faces. During the rewinding process, the end faces of the capacitor film roll are aligned through a correction actuator and control of the unwinding and winding tension. To improve the quality of the rewound capacitor film roll, current dedicated rewinding machines for capacitor film generally include a pressure roller device and a winding device. The winding device includes a winding core rotatably mounted on the frame (the position of the winding core is fixed), which is used to rewind the capacitor film to form a capacitor film roll with neat end faces. The pressure roller device includes a pressure roller arm rotatably mounted on the frame and a pressure roller rotatably mounted on the pressure roller arm. During the capacitor film rewinding process, the pressure roller presses against the capacitor film on the winding core (the pressure roller presses against the capacitor film on the winding core due to its own weight or the force of the pressure roller arm driven by a cylinder), to remove air from the capacitor film roll and avoid defects such as bulging. For example, Chinese Patent Publication No. CN213211976U, the invention is entitled "A Rewinding Device for Metallized Capacitor Film".

[0003] Currently, in capacitor film rewinding equipment, the pressure roller device and winding device have a problem. During the winding process, the outer diameter of the capacitor film roll on the winding core gradually increases. This causes the pressure roller against the capacitor film roll to rotate. The rotation of the pressure roller arm not only changes the position of the pressure roller against the capacitor film roll on the winding core, but also changes the direction of the pressure exerted by the pressure roller on the capacitor film roll. This results in changes in the magnitude of the positive pressure exerted by the pressure roller on the capacitor film roll (this positive pressure refers to the pressure pointing towards the axis of the winding core). As a result, the quality of capacitor film winding is affected, especially for thinner capacitor films (such as 2-8µm BOPP capacitor film material), where the impact is greater and defects such as bulging are more likely to occur. Utility Model Content

[0004] The purpose of this invention is to provide a capacitor film rewinding device that can stably and accurately control the pressure of the pressure roller on the capacitor film roll on the take-up core during the capacitor film rewinding process, thereby improving the capacitor film rewinding quality.

[0005] The technical solution of this utility model is: A capacitor film rewinding device includes a frame, a pressure roller assembly, and a winding assembly. The winding assembly includes: The slide block is horizontally mounted on the frame. The winding core for winding up the capacitor film is mounted on the slide, and the axial direction of the winding core is perpendicular to the sliding direction of the slide. Translation drive mechanism drives the slide to translate; The pressure roller assembly includes: The vertically extending pressure roller arm is rotatably mounted on the frame; The pressure roller is rotatably mounted on the pressure roller arm and is parallel to the take-up core. The pressure roller arm drive mechanism drives the pressure roller arm to rotate so that the pressure roller presses against the take-up core or the capacitor film of the take-up core.

[0006] The pressure roller arm has an initial vertically distributed configuration. During the winding process of the capacitor film, when the rotation angle of the pressure roller arm exceeds a set value 'a', the translation drive mechanism drives the slide block to translate, so that the pressure roller arm returns to its initial state. The set value 'a' is 1-5 degrees. Compared to existing technologies where the outer diameter of the capacitor film roll on the take-up core gradually increases during capacitor film rewinding, causing the pressure roller against the film roll to rotate and altering the direction of pressure exerted on the film roll, thus affecting the film winding quality and leading to defects such as bulging, this proposed capacitor film rewinding device, in its operation, uses the take-up core of the take-up device to wind the capacitor film. During this process, when the rotation angle of the pressure roller arm exceeds a set value 'a', the translation drive mechanism drives the slide to translate, returning the pressure roller arm to its initial state. This results in a very small rotation angle of the pressure roller arm during capacitor film rewinding, maintaining a roughly vertical extension. Consequently, the direction and magnitude of the pressure exerted on the capacitor film roll on the take-up core by the pressure roller arm and the pressure roller drive mechanism remain essentially constant. This allows for stable and precise control of the pressure exerted on the capacitor film roll by the pressure roller, improving the film winding quality and effectively preventing defects such as bulging.

[0007] Preferably, the system further includes several drive rollers rotatably mounted on a frame. The capacitor film sequentially passes over each drive roller and is wound onto the take-up core. The drive rollers are rubber-coated rollers with a textured surface. Because the drive rollers are rubber-coated and have a textured surface, during rotation, the textured surface of the rubber-coated roller is compressed by the capacitor film, creating an adsorption effect. This improves the stability of the capacitor film as it passes over the drive rollers, prevents the capacitor film from deviating along the axial direction of the drive rollers, and improves the winding quality of the capacitor film.

[0008] Preferably, it also includes a membrane drive mechanism, wherein each drive roller is driven to rotate synchronously by the same membrane drive mechanism, and the membrane drive mechanism includes: The drive pulley is mounted on the frame and rotates. A membrane drive motor is mounted on the frame to drive the drive pulley to rotate; A synchronous belt passes sequentially around the drive pulley and each drive roller. In this way, all drive rollers can be driven to rotate synchronously by the same film drive mechanism, reducing manufacturing costs and ensuring synchronous rotation of all drive rollers.

[0009] Preferably, a detection sensor is also included. The detection sensor is a photoelectric sensor, including a transmitter and a receiver, which are distributed on opposite sides of the pressure roller arm. When the rotation angle of the pressure roller arm is greater than the set value 'a', the pressure roller arm is located between the transmitter and receiver, isolating the photoelectric signal of the detection sensor. During the winding of the capacitor film in the winding device, as the outer diameter of the capacitor film roll on the winding core increases, the pressure roller arm will rotate. When the rotation angle of the pressure roller arm is greater than the set value 'a', the pressure roller arm is located between the transmitter and receiver, isolating the photoelectric signal of the detection sensor. At this time, the translation drive mechanism drives the slide to translate, moving the winding core a set distance away from the pressure roller, so that the pressure roller arm returns to its initial state and the photoelectric signal of the detection sensor is reconnected. This cycle repeats, so that the rotation angle of the pressure roller arm during the rewinding of the capacitor film is very small, maintaining a roughly vertical extension state. This ensures that the pressure direction and size of the pressure on the capacitor film roll on the winding core by the pressure roller arm drive mechanism through the pressure roller arm and the pressure roller remain unchanged.

[0010] Preferably, a detection sensor is also included, which is an angular displacement sensor to detect the rotation angle of the pressure roller arm. During the winding of the capacitor film in the winding device, as the outer diameter of the capacitor film roll on the winding core increases, the pressure roller arm will rotate. When the angular displacement sensor detects that the rotation angle of the pressure roller arm is greater than a set value 'a', the translation drive mechanism drives the slide to translate, moving the winding core a set distance away from the pressure roller, thus restoring the pressure roller arm to its initial state. This cycle repeats, ensuring that the rotation angle of the pressure roller arm is very small during the capacitor film rewinding process, maintaining a roughly vertical extension state. This, in turn, keeps the pressure direction and size of the pressure applied by the pressure roller arm drive mechanism to the capacitor film roll on the winding core unchanged.

[0011] Preferably, the height difference between the axis of the pressure roller and the axis of the take-up core is less than a set value H, which is less than 5 cm. This ensures that the axis of the pressure roller and the axis of the take-up core are approximately at the same height. Consequently, the pressure exerted on the capacitor film roll on the take-up core by the pressure roller arm drive mechanism through the pressure roller arm and the pressure roller is directed towards the axis of the take-up core, which helps control the pressure exerted by the pressure roller on the capacitor film roll on the take-up core.

[0012] Preferably, the winding device further includes a winding drive mechanism and a winding arm assembly mounted on a slide. The winding arm assembly includes two winding arms, and the winding core is rotatably disposed between the two winding arms. The winding drive mechanism includes a winding motor, which is mounted on the winding arm to drive the winding core to rotate. During the capacitor film rewinding process, the winding core is driven to rotate by the winding motor, thereby rewinding the capacitor film onto the winding core.

[0013] Preferably, the translation drive mechanism is mounted on the frame, and the translation drive mechanism is either an electric cylinder or a linear module. In this way, the translation distance of the slide can be precisely controlled by the electric cylinder or linear module, so that the pressure roller arm can return to its initial state.

[0014] Preferably, the pressure roller arm drive mechanism is composed of a cylinder.

[0015] The beneficial effects of this utility model are as follows: In specific operation, the capacitor film is wound up by the winding core of the winding device. During this process, when the rotation angle of the pressure roller arm is greater than the set value 'a', the translation drive mechanism drives the slide to translate so that the pressure roller arm returns to its initial state. This makes the rotation angle of the pressure roller arm very small during the rewinding process of the capacitor film, and keeps it roughly in a vertically extended state. In this way, the direction and magnitude of the pressure on the capacitor film roll on the winding core by the pressure roller arm and the pressure roller drive mechanism will remain basically unchanged. This allows for stable and precise control of the pressure on the capacitor film roll on the winding core by the pressure roller, thereby improving the winding quality of the capacitor film and effectively avoiding defects such as bulging. Attached Figure Description

[0016] Figure 1 This is a partial structural diagram of a capacitor film rewinding device according to the present invention.

[0017] In the picture: Rack 1; 2. Rewinding device, 2.1. Slide, 2.2. Translation drive mechanism, 2.3. Rewinding core, 2.4. Pressure roller device 3, pressure roller arm 3.1, pressure roller 3.2, pressure roller arm drive mechanism 3.3; Capacitor film 4; Drive roller 5; 6.1 for the drive pulley and 6.2 for the timing belt. Detailed Implementation

[0018] Specific Implementation Example 1, such as Figure 1 As shown, a capacitor film rewinding device includes a frame 1, a pressure roller device 3, and a winding device 2.

[0019] The winding device 2 includes a slide 2.1, a winding core 2.3, and a translation drive mechanism 2.2. The slide 2.1 is slidably mounted on the frame 1 in a horizontal direction. In this embodiment, the slide 2.1 is provided with a horizontal guide rail, and the slide 2.1 is slidably mounted on the horizontal guide rail. The winding core 2.3 is used to wind up the capacitor film 4. The winding core 2.3 is mounted on the slide 2.1. The axial direction of the winding core 2.3 is perpendicular to the sliding direction of the slide 2.1. The translation drive mechanism 2.2 drives the slide 2.1 to translate. In this embodiment, the translation drive mechanism 2.2 is mounted on the frame 1 and is an electric cylinder or a linear module. Thus, the translation distance of the slide 2.1 can be precisely controlled by the electric cylinder or linear module.

[0020] The pressure roller device 3 includes a pressure roller arm 3.1, a pressure roller 3.2, and a pressure roller arm drive mechanism 3.3. The pressure roller arm 3.1 extends vertically and is rotatably mounted on the frame 1. The pressure roller 3.2 is rotatably mounted on the pressure roller arm 3.1. In this embodiment, the pressure roller 3.2 is rotatably mounted on the top of the pressure roller arm 3.1. The pressure roller 3.2 is parallel to the take-up core 2.3. The pressure roller arm drive mechanism 3.3 drives the pressure roller arm 3.1 to rotate so that the pressure roller 3.2 presses against the take-up core 2.3 or the capacitor film of the take-up core 2.3. In this embodiment, the pressure roller arm drive mechanism 3.3 is composed of a cylinder. The cylinder is mounted on the frame 1.

[0021] The pressure roller arm 3.1 includes an initial state in which it is vertically distributed. During the winding of the capacitor film, when the rotation angle of the pressure roller arm exceeds a set value 'a', the translation drive mechanism 2.3 drives the slide block 2.1 to translate, so that the pressure roller arm 3.1 returns to its initial state. The set value 'a' is 1-5 degrees. In this embodiment, the set value 'a' is 1 degree or 2 degrees. In this embodiment, when the rotation angle of the pressure roller arm exceeds the set value 'a' means when the pressure roller arm rotates from its initial state by an angle greater than the set value 'a'.

[0022] Compared to the existing technology where the outer diameter of the capacitor film roll on the winding core 2.3 gradually increases during the capacitor film rewinding process, causing the pressure roller 3.2 against the capacitor film roll to rotate and thus changing the direction of the pressure exerted by the pressure roller 3.2 on the capacitor film roll, resulting in a change in the magnitude of the positive pressure exerted by the pressure roller 3.2 on the capacitor film roll, thereby affecting the capacitor film winding quality and easily causing defects such as bulging; in this embodiment, a capacitor film-specific rewinding device, in specific operation, winds the capacitor film through the winding core of the winding device. During this process, when When the rotation angle of the pressure roller arm is greater than the set value 'a', the translation drive mechanism drives the slide to translate, causing the take-up core 2.3 to move a set distance away from the pressure roller 3.2, so that the pressure roller arm returns to its initial state. This makes the rotation angle of the pressure roller arm very small during the capacitor film rewinding process, and keeps it roughly in a vertical extension state. In this way, the direction and magnitude of the pressure on the capacitor film roll on the take-up core by the pressure roller arm drive mechanism through the pressure roller arm and the pressure roller will remain basically unchanged. This allows for stable and precise control of the pressure on the capacitor film roll on the take-up core by the pressure roller, thereby improving the capacitor film winding quality and effectively avoiding defects such as bulging.

[0023] Specific embodiment two, such as Figure 1 As shown, a capacitor film rewinding device includes a frame 1, a pressure roller device 3, and a winding device 2.

[0024] The winding device 2 includes a slide 2.1, a winding core 2.3, a translation drive mechanism 2.2, a winding drive mechanism, and a winding arm assembly mounted on the slide 2.1. The slide 2.1 is slidably mounted on the frame 1 in a horizontal direction. In this embodiment, the slide 2.1 is provided with a horizontal guide rail, and the slide 2.1 is slidably mounted on the horizontal guide rail.

[0025] The take-up arm assembly includes two take-up arms 2.4. In this embodiment, the take-up arms 2.4 are slidably mounted on the slide block 2.1, and the sliding direction of the take-up arms 2.4 is parallel to the axial direction of the take-up core 2.3. Locking bolts are provided on the take-up arms 2.4, which lock and fix the take-up arms 2.4 to the slide block 2.1.

[0026] The take-up core 2.3 is used to take up the capacitor film 4. The take-up core 2.3 is mounted on the slide 2.1, specifically, the take-up core 2.3 is rotatably mounted between the two take-up arms 2.4 of the take-up arm assembly. The axial direction of the take-up core 2.3 is perpendicular to the sliding direction of the slide 2.1.

[0027] The winding drive mechanism includes a winding motor. The winding motor is mounted on the winding arm 2.4 and drives the winding core 2.3 to rotate. In this embodiment, the winding drive mechanism includes a winding motor mounted on one of the winding arms 2.4 in the winding arm assembly, and the winding core 2.3 is driven by this winding motor. During the capacitor film rewinding process, the winding motor drives the winding core 2.3 to rotate, rewinding the capacitor film onto the winding core 2.3.

[0028] The translation drive mechanism 2.2 drives the slide 2.1 to translate. In this embodiment, the translation drive mechanism 2.2 is mounted on the frame 1, and the translation drive mechanism 2.2 is an electric cylinder or a linear module. In this way, the translation distance of the slide 2.1 can be precisely controlled by the electric cylinder or linear module.

[0029] The pressure roller device 3 includes a pressure roller arm 3.1, a pressure roller 3.2, and a pressure roller arm drive mechanism 3.3. The pressure roller arm 3.1 extends vertically and is rotatably mounted on the frame 1. The pressure roller 3.2 is rotatably mounted on the pressure roller arm 3.1. In this embodiment, the pressure roller 3.2 is rotatably mounted on the top of the pressure roller arm 3.1. The pressure roller 3.2 is parallel to the take-up core 2.3. The pressure roller arm drive mechanism 3.3 drives the pressure roller arm 3.1 to rotate so that the pressure roller 3.2 presses against the take-up core 2.3 or the capacitor film of the take-up core 2.3. In this embodiment, the pressure roller arm drive mechanism 3.3 is composed of a cylinder. The cylinder is mounted on the frame 1.

[0030] The pressure roller arm 3.1 includes an initial state in which it is vertically distributed. During the winding of the capacitor film, when the rotation angle of the pressure roller arm exceeds a set value 'a', the translation drive mechanism 2.3 drives the slide block 2.1 to translate, so that the pressure roller arm 3.1 returns to its initial state. The set value 'a' is 1-5 degrees. In this embodiment, the set value 'a' is 1 degree or 2 degrees. In this embodiment, when the rotation angle of the pressure roller arm exceeds the set value 'a' means when the pressure roller arm rotates from its initial state by an angle greater than the set value 'a'.

[0031] Compared to the existing technology where the outer diameter of the capacitor film roll on the take-up core 2.3 gradually increases during the capacitor film rewinding process, causing the pressure roller 3.2 against the capacitor film roll to rotate and thus changing the direction of the pressure exerted by the pressure roller 3.2 on the capacitor film roll, resulting in a change in the magnitude of the positive pressure exerted by the pressure roller 3.2 on the capacitor film roll, thereby affecting the capacitor film winding quality and easily causing defects such as bulging, the capacitor film rewinding equipment of this embodiment, in specific operation, winds the capacitor film through the take-up core 2.3 of the take-up core 2.3. During this process, when the rotation angle of the pressure roller arm is greater than the set value, the capacitor film is wound up. When value 'a' is reached, the translation drive mechanism 2.3 drives the slide block 2.1 to translate, causing the take-up core 2.3 to move a set distance away from the pressure roller 3.2, so that the pressure roller arm 3.1 returns to its initial state. This results in a very small rotation angle of the pressure roller arm during capacitor film rewinding, maintaining a roughly vertical extension. Consequently, the pressure direction and magnitude exerted by the pressure roller arm drive mechanism 3.3 on the capacitor film roll on the take-up core 2.3 through the pressure roller arm 3.1 and the pressure roller 3.2 remain essentially constant. This allows for stable and precise control of the pressure exerted by the pressure roller 3.2 on the capacitor film roll on the take-up core 2.3, thereby improving the capacitor film winding quality and effectively preventing defects such as bulging. In actual operation, as long as the working pressure of the cylinder constituting the pressure roller arm drive mechanism 3.3 remains constant, the pressure exerted by the pressure roller 3.2 on the capacitor film roll on the take-up core 2.3 can be stably and precisely controlled.

[0032] Specifically, a capacitor film rewinding device also includes a detection sensor (not shown in the figure). The detection sensor is used to detect the state of the pressure roller arm 3.1.

[0033] In one embodiment, the detection sensor is a photoelectric sensor, which includes a transmitter and a receiver. The transmitter and receiver are fixed on the frame 1 and are distributed on opposite sides of the pressure roller arm 3.1. When the pressure roller arm 3.1 is in a vertical state, the transmitter and receiver are connected (i.e., the transmitter can receive the photoelectric signal emitted by the receiver). When the rotation angle of the pressure roller arm is greater than a set value 'a' (a ranges from 1 to 5 degrees; in this embodiment, 'a' is 2 degrees), the pressure roller arm is positioned between the transmitter and receiver, thus blocking the photoelectric signal from the detection sensor. In the winding device 2, the winding core 2.3 winds up the capacitor film. As the outer diameter of the capacitor film roll on the winding core 2.3 increases, the pressure roller arm 3.1 will rotate. When the rotation angle of the pressure roller arm is greater than the set value 'a', the pressure roller arm 3.1 is located between the transmitting end and the receiving end, cutting off the photoelectric signal of the detection sensor. At this time, the translation drive mechanism 2.2 drives the slide 2.1 to translate, causing the winding core 2.3 to move a set distance away from the pressure roller 3.2, so that the pressure roller arm 3.1 returns to its initial state and the photoelectric signal of the detection sensor is restored. This cycle repeats, so that the rotation angle of the pressure roller arm is very small during the rewinding of the capacitor film, and it maintains a roughly vertical extension state. As a result, the pressure direction and magnitude of the pressure exerted by the pressure roller arm drive mechanism 3.3 on the capacitor film roll on the winding core 2.3 through the pressure roller arm 3.1 and the pressure roller 3.2 remain basically unchanged.

[0034] In another embodiment, the detection sensor is an angular displacement sensor, which detects the rotation angle of the pressure roller arm 3.1. When the angular displacement sensor detects that the pressure roller arm 3.1 has rotated by 'a' degrees, the translation drive mechanism 2.2 drives the slide 2.1 to translate, so that the pressure roller arm 3.1 returns to its initial state. The value of 'a' is 1-5 degrees. In this embodiment, the value of 'a' is 2 degrees. In the winding device 2, the winding core 2.3 winds up the capacitor film. As the outer diameter of the capacitor film roll on the winding core 2.3 increases, the pressure roller arm 3.1 will rotate. When the angular displacement sensor detects that the rotation angle of the pressure roller arm 3.1 is greater than the set value 'a', the translation drive mechanism 2.2 drives the slide 2.1 to translate, causing the winding core 2.3 to move a set distance away from the pressure roller 3.2, so that the pressure roller arm 3.1 returns to its initial state. This cycle repeats, so that the rotation angle of the pressure roller arm is very small during the rewinding of the capacitor film, and it maintains a roughly vertical extension state. As a result, the pressure direction and magnitude of the pressure exerted by the pressure roller arm drive mechanism 3.3 on the capacitor film roll on the winding core 2.3 through the pressure roller arm 3.1 and the pressure roller 3.2 remain basically unchanged.

[0035] Furthermore, such as Figure 1As shown, the height difference between the axis of the pressure roller 3.2 and the axis of the take-up core 2.3 is less than the set value H, which is less than 5 cm. This ensures that the axis of the pressure roller 3.2 and the axis of the take-up core 2.3 are approximately at the same height. Consequently, the pressure exerted by the pressure roller arm drive mechanism 3.3 on the capacitor film roll on the take-up core 2.3 through the pressure roller arm 3.1 and the pressure roller 3.2 will be directed towards the axis of the take-up core 2.3, which is beneficial for controlling the pressure exerted by the pressure roller 3.2 on the capacitor film roll on the take-up core 2.3.

[0036] Furthermore, such as Figure 1 As shown, a capacitor film rewinding device further includes several drive rollers 5 rotatably mounted on a frame 1. The capacitor film sequentially passes over each drive roller 5 and is wound onto the take-up core 2.3. The drive rollers 5 are rubber-coated rollers with a textured surface. Because the drive rollers 5 are rubber-coated rollers with a textured surface, during rotation, the textured surface of the rubber-coated rollers is compressed by the capacitor film, creating an adsorption effect. This improves the stability of the capacitor film as it passes over the drive rollers 5, prevents the capacitor film from deviating along the axial direction of the drive rollers 5, and improves the winding quality of the capacitor film.

[0037] Furthermore, such as Figure 1 As shown, a capacitor film rewinding device also includes a film driving mechanism. Each drive roller 5 is driven to rotate synchronously by the same film driving mechanism. The film driving mechanism includes a drive pulley 6.1, a film driving motor, and a synchronous belt 6.2. The drive pulley is rotatably mounted on the frame 1. The film driving motor, mounted on the frame 1, drives the drive pulley to rotate. The synchronous belt sequentially passes over the drive pulley and each drive roller 5. In this way, each drive roller 5 can be driven to rotate synchronously by the same film driving mechanism, reducing manufacturing costs and ensuring synchronous rotation of each drive roller 5.

[0038] In this embodiment, the membrane drive mechanism includes a tensioning mechanism. The tensioning mechanism is mounted on the frame 1. The tensioning mechanism includes a tensioning wheel and a tensioning spring for tensioning the drive belt. The tensioning wheel abuts against the synchronous belt under the action of the tensioning spring, so that the synchronous belt is in a tensioned state.

[0039] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A special rewinding equipment for capacitor film, comprising a frame, a pressure roller device, and a winding device, characterized in that, The winding device includes: The slide block is horizontally mounted on the frame. The winding core for winding up the capacitor film is mounted on the slide, and the axial direction of the winding core is perpendicular to the sliding direction of the slide. Translation drive mechanism drives the slide to translate; The pressure roller assembly includes: The vertically extending pressure roller arm is rotatably mounted on the frame; The pressure roller is rotatably mounted on the pressure roller arm and is parallel to the take-up core. The pressure roller arm drive mechanism drives the pressure roller arm to rotate so that the pressure roller presses against the take-up core or the capacitor film of the take-up core.

2. The rewinding apparatus for a capacitor film according to claim 1, wherein The pressure roller arm includes an initial state in which it is vertically distributed. During the winding process of the capacitor film, when the rotation angle of the pressure roller arm is greater than the set value 'a', the translation drive mechanism drives the slide to translate so that the pressure roller arm returns to its initial state.

3. The capacitor film rewinding equipment according to claim 2, characterized in that, The set value 'a' is 1-5 degrees.

4. The rewinding apparatus for a capacitor film according to claim 1 or 2 or 3, wherein It also includes several drive rollers rotatably mounted on the frame. The capacitor film passes around each drive roller in sequence and is wound onto the take-up core. The drive rollers are rubber-coated rollers, and the surface of the rubber-coated rollers is patterned.

5. The rewinding apparatus for a capacitive film according to claim 4, wherein It also includes a membrane drive mechanism, in which each drive roller is driven to rotate synchronously via the same membrane drive mechanism. The membrane drive mechanism includes: The drive pulley is mounted on the frame and rotates. A membrane drive motor is mounted on the frame to drive the drive pulley to rotate; The synchronous belt passes sequentially around the drive pulley and each drive roller.

6. The special rewinding equipment for the capacitive film according to claim 1 or 2 or 3, characterized in that, It also includes a detection sensor, which is a photoelectric sensor, including a transmitter and a receiver, and the transmitter and receiver are distributed on opposite sides of the pressure roller arm; when the rotation angle of the pressure roller arm is greater than the set value a, the pressure roller arm is located between the transmitter and the receiver, thus isolating the photoelectric signal of the detection sensor.

7. A capacitor film rewinding device according to claim 1, 2, or 3, characterized in that, It also includes a detection sensor, which is an angular displacement sensor, to detect the rotation angle of the pressure roller arm.

8. A capacitor film rewinding device according to claim 1, 2, or 3, characterized in that, The height difference between the axis of the pressure roller and the axis of the winding core is less than a set value H, and the set value H is less than 5 cm.

9. The special rewinding equipment for the capacitive film according to claim 1 or 2 or 3, characterized in that, The winding device further includes a winding drive mechanism and a winding arm assembly mounted on a slide block. The winding arm assembly includes two winding arms, and the winding core is rotatably mounted between the two winding arms of the winding arm assembly. The winding drive mechanism includes a winding motor, which is mounted on the winding arm to drive the winding core to rotate.

10. A capacitor film rewinding device according to claim 1, 2, or 3, characterized in that, The translation drive mechanism is mounted on the frame and is either an electric cylinder or a linear module; the pressure roller arm drive mechanism is composed of a pneumatic cylinder.

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