Film fixing structure and winding device thereof

Abstract

The utility model discloses a film fixing structure and a winding device thereof. The film fixing structure comprises a fixed assembly and a movable assembly. The fixed assembly is provided with a first guide wheel and a second guide wheel, and the movable assembly is provided with a first pressing wheel matched with the first guide wheel and a second pressing wheel matched with the second guide wheel. The movable assembly drives the first pressing wheel and the second pressing wheel to move in the mode of being attached to the first guide wheel and the second guide wheel correspondingly so that the film can be fixed between the fixed assembly and the movable assembly. A groove matched with the film is formed between the first guide wheel and the second guide wheel; the surfaces of the first pressing wheel and the second pressing wheel are covered with flexible materials. By arranging the fixed assembly and the movable assembly, a film can be stably conveyed between the first guide wheel and the first pressing wheel and between the second guide wheel and the second pressing wheel, and the movable assembly drives the first pressing wheel and the second pressing wheel to be attached to the fixed assembly so that the film can be accurately fixed between the fixed assembly and the movable assembly; and the positioning accuracy and the operation stability of the winding device are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitor production, in particular to a film fixing structure and a winding device thereof. Background Art

[0002] The winding device is a device that continuously winds the metallized film from a large roll into the required finished product size, and then cuts and packages it to form a film capacitor. At present, the winding device uses a metal roller to press the metal film onto the cylindrical metal body and fix it before cutting and separating it. However, since there is no linkage between the metal roller and the film, the film is prone to slipping and deviating; in addition, when the metal film is unilaterally stationary, one side of the metal film is worn, thereby affecting the capacity of the film capacitor. Summary of the invention

[0003] In order to solve the above problems, the purpose of the utility model is to provide a film fixing structure and a winding device thereof, so as to increase the friction between the fixed component and the movable component, reduce the stretching and deviation of the metal film, and improve the positioning accuracy of the winding device.

[0004] The technical solution adopted by the utility model to solve the problem is:

[0005] The first aspect of the utility model is a film fixing structure, comprising a fixed component and a movable component; the fixed component is provided with a first guide wheel and a second guide wheel, and the movable component is provided with a first pressure wheel cooperating with the first guide wheel and a second pressure wheel cooperating with the second guide wheel; the movable component drives the first pressure wheel and the second pressure wheel to move in contact with the first guide wheel and the second guide wheel respectively, so that the film is fixed between the fixed component and the movable component; a groove cooperating with the film is provided between the first guide wheel and the second guide wheel; the surfaces of the first pressure wheel and the second pressure wheel are covered with flexible material.

[0006] The above-mentioned film fixing structure has at least the following beneficial effects: by setting a fixed component and a movable component, the film can be stably transmitted between the first guide wheel and the first pressure wheel, and between the second guide wheel and the second pressure wheel, and the movable component drives the first pressure wheel and the second pressure wheel to fit the fixed component so that the film can be accurately fixed between the fixed component and the movable component, thereby ensuring the positioning accuracy of the winding device; by setting the first pressure wheel and the second pressure wheel, the flexible material covering the surface of the first pressure wheel and the second pressure wheel increases the friction between the film and the movable component, thereby avoiding the deviation of the film and also avoiding damage caused by excessive external force on the film, thereby improving the operating stability of the winding device.

[0007] Furthermore, the fixed assembly further comprises a rotating shaft, and the first guide wheel and the second guide wheel are both movably connected to the rotating shaft via a connecting block. By providing the rotating shaft and the connecting block, the connection flexibility between the first guide wheel and the second guide wheel and the fixed assembly is improved, and the position and size of the first guide wheel and the second guide wheel are adjusted according to actual needs, thereby improving the compatibility of the winding device.

[0008] Furthermore, multiple sets of the first guide wheels and the second guide wheels are evenly distributed on the rotating shaft. By providing multiple sets of the first guide wheels and the second guide wheels, the winding device can quickly switch different fixed components according to product requirements, thereby improving the convenience of use of the winding device.

[0009] Furthermore, the groove is located in the middle of the connecting block. This structure ensures that the groove can accurately locate the middle of the first guide wheel and the second guide wheel, so as to accurately cut the film and improve the positioning accuracy of the winding device.

[0010] Furthermore, the cross section of the groove is rectangular. The groove of this structure has the advantages of being stable and not easy to be damaged, which can ensure that the winding device can stably cut the film and increase the service life of the winding device.

[0011] Furthermore, the movable assembly further comprises a slider, one end of which is movably connected to the first pressure wheel and the second pressure wheel, and the other end of which is connected to a driving device. By providing the slider, the first pressure wheel and the second pressure wheel can be quickly and accurately pressed onto the first guide wheel and the second guide wheel, thereby improving the operating efficiency of the winding device.

[0012] Furthermore, the movement direction of the slider is perpendicular to the plane where the groove is located. The slider of this structure can accurately drive the first pressure wheel and the second pressure wheel to move, avoiding the first pressure wheel and the second pressure wheel from applying too much or too little pressure on the film, thereby affecting the positioning accuracy of the winding device.

[0013] Furthermore, a cutting portion is provided between the sliders, and the cutting portion is directly opposite to the groove. By providing the cutting portion, the winding device can accurately cut the film into the groove, thereby improving the positioning accuracy of the winding device.

[0014] Furthermore, the flexible material covering the surface of the first pressing wheel and the second pressing wheel is rubber. Rubber has high elasticity, strong durability and good anti-aging performance. The surface of the first pressing wheel and the second pressing wheel is covered with rubber, which improves the stability of the movable component.

[0015] A second aspect of the present invention is a winding device, comprising the film fixing structure as described above.

[0016] The beneficial effects of the above-mentioned winding device are as follows: by setting a fixed component and a movable component, the film can be stably transmitted between the first guide wheel and the first pressure wheel, and between the second guide wheel and the second pressure wheel, and the movable component drives the first pressure wheel and the second pressure wheel to fit the fixed component so that the film can be accurately fixed between the fixed component and the movable component, thereby ensuring the positioning accuracy of the winding device; by setting the first pressure wheel and the second pressure wheel, the flexible material covering the surface of the first pressure wheel and the second pressure wheel increases the friction between the film and the movable component, thereby avoiding the deviation of the film and also avoiding damage caused by excessive external force on the film, thereby improving the operating stability of the winding device.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a structural schematic diagram of a film fixing structure according to an embodiment of the utility model;

[0020] Figure 2 This is a structural exploded view from another angle of a film fixing structure of an embodiment of the utility model;

[0021] Figure 3 It is a side view of a film fixing structure according to an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] Reference Figures 1 to 3The embodiment of the utility model provides a film fixing structure, including a fixed component 100 and a movable component 200; the fixed component 100 is provided with a first guide wheel 110 and a second guide wheel 120, and the movable component 200 is provided with a first pressure wheel 210 matched with the first guide wheel 110 and a second pressure wheel 220 matched with the second guide wheel 120; the movable component 200 drives the first pressure wheel 210 and the second pressure wheel 220 to move in contact with the first guide wheel 110 and the second guide wheel 120 respectively, so that the film is fixed between the fixed component 100 and the movable component 200; a groove 130 matched with the film is provided between the first guide wheel 110 and the second guide wheel 120; the surfaces of the first pressure wheel 210 and the second pressure wheel 220 are covered with flexible material.

[0024] By setting up the fixed component 100 and the movable component 200, the film can be stably transferred between the first guide wheel 110 and the first pressure wheel 210, and between the second guide wheel 120 and the second pressure wheel 220, and the movable component 200 drives the first pressure wheel 210 and the second pressure wheel 220 to fit the fixed component 100 so that the film is accurately fixed between the fixed component 100 and the movable component 200, thereby ensuring the positioning accuracy of the winding device; by setting up the first pressure wheel 210 and the second pressure wheel 220, the flexible material covering the surface of the first pressure wheel 210 and the second pressure wheel 220 increases the friction between the film and the movable component 200, thereby avoiding the deviation of the film and also avoiding damage caused by excessive external force on the film, thereby improving the operating stability of the winding device.

[0025] In another embodiment, the fixing assembly 100 further includes a rotating shaft 140, and the first guide wheel 110 and the second guide wheel 120 are both movably connected to the rotating shaft 140 via a connecting block 150. By providing the rotating shaft 140 and the connecting block 150, the connection flexibility between the first guide wheel 110 and the second guide wheel 120 and the fixing assembly 100 is improved, and the position and size of the first guide wheel 110 and the second guide wheel 120 are adjusted according to actual needs, thereby improving the compatibility of the winding device.

[0026] In another embodiment, multiple sets of first guide wheels 110 and second guide wheels 120 are evenly distributed on the rotating shaft 140. By providing multiple sets of first guide wheels 110 and second guide wheels 120, the winding device can quickly switch different fixing components 100 according to product requirements, thereby improving the convenience of use of the winding device.

[0027] In another embodiment, the groove 130 is located in the middle of the connecting block 150. This structure ensures that the groove 130 can accurately locate the middle of the first guide wheel 110 and the second guide wheel 120, so as to accurately cut the film and improve the positioning accuracy of the winding device.

[0028] In another embodiment, the cross section of the groove 130 is rectangular. The groove 130 of this structure has the advantages of being stable in structure and not easy to be damaged, which can ensure that the winding device can stably cut the film and improve the service life of the winding device.

[0029] In another embodiment, the movable assembly 200 further includes a slider 230, one end of which is movably connected to the first pressing wheel 210 and the second pressing wheel 220, and the other end of the slider 230 is connected to a driving device (not shown). By providing the slider 230, the first pressing wheel 210 and the second pressing wheel 220 can be quickly and accurately pressed onto the first guide wheel 110 and the second guide wheel 120, thereby improving the operating efficiency of the winding device.

[0030] In another embodiment, the movement direction of the slider 230 is perpendicular to the plane where the groove 130 is located. The slider 230 of this structure can accurately drive the first pressing wheel 210 and the second pressing wheel 220 to move, thereby preventing the first pressing wheel 210 and the second pressing wheel 220 from exerting too much or too little pressure on the film, thereby affecting the positioning accuracy of the winding device.

[0031] In another embodiment, a cutting portion (not shown) is further provided between the sliders 230, and the cutting portion is directly opposite to the groove 130. By providing the cutting portion, it is convenient for the winding device to accurately cut the film into the groove 130, thereby improving the positioning accuracy of the winding device.

[0032] In another embodiment, the flexible material covering the surface of the first pressing wheel 210 and the second pressing wheel 220 is rubber. Rubber has high elasticity, strong durability and good anti-aging performance. The surface of the first pressing wheel 210 and the second pressing wheel 220 is covered with rubber, which improves the stability of the movable component 200.

[0033] The embodiment of the utility model further provides a winding device, comprising the film fixing structure as described above.

[0034] By setting up the fixed component 100 and the movable component 200, the film can be stably transferred between the first guide wheel 110 and the first pressure wheel 210, and between the second guide wheel 120 and the second pressure wheel 220, and the movable component 200 drives the first pressure wheel 210 and the second pressure wheel 220 to fit the fixed component 100 so that the film is accurately fixed between the fixed component 100 and the movable component 200, thereby ensuring the positioning accuracy of the winding device; by setting up the first pressure wheel 210 and the second pressure wheel 220, the flexible material covering the surface of the first pressure wheel 210 and the second pressure wheel 220 increases the friction between the film and the movable component 200, thereby avoiding the deviation of the film and also avoiding damage caused by excessive external force on the film, thereby improving the operating stability of the winding device.

[0035] The working principle of the utility model is further explained below.

[0036] During the assembly process, firstly, the fixed component 100 and the movable component 200 of appropriate size are selected according to the thickness of the film and the capacity of the capacitor, so that the film can be stably transferred between the first guide wheel 110 and the first pressure wheel 210, and between the second guide wheel 120 and the second pressure wheel 220, and the movable component 200 drives the first pressure wheel 210 and the second pressure wheel 220 to fit the fixed component 100 so that the film is accurately fixed between the fixed component 100 and the movable component 200; the first guide wheel 110 and the second guide wheel 120 are both passed through The connecting block 150 is movably connected to the rotating shaft 140, one end of the slider 230 is movably connected to the first pressing wheel 210 and the second pressing wheel 220, and the other end of the slider 230 is connected to the driving device, so that the driving device drives the first pressing wheel 210 and the second pressing wheel 220 to move closer to or away from the first guide wheel 110 and the second guide wheel 120 through the slider 230; finally, the fixed component 100 and the movable component 200 are installed on the winding device, and the cutting part is installed between the sliders 230 so that the cutting part is directly opposite to the groove 130. Figure 1 and 2 As shown, in some embodiments, the motor drive device controls the first guide wheel 110 to be opened and closed and is provided with two sets of first pressure wheels 210 correspondingly, so as to accurately control the film to enter between the first guide wheel 110 and the first pressure wheel 210 .

[0037] During use, the film roll passes between the first guide wheel 110 and the first pressure wheel 210, between the second guide wheel 120 and the second pressure wheel 220, and reaches the bottom of the film fixing structure. At this time, the driving device drives the first pressure wheel 210 and the second pressure wheel 220 to move away from the first guide wheel 110 and the second guide wheel 120 respectively through the slider 230. Since the capacitor core is formed by overlapping and winding two layers of single-sided metal films in the same direction, the two film rolls continuously pass between the fixed component 100 and the movable component 200 and are wound on the reel of the capacitor core. Then, the driving device drives the first pressure wheel 210 and the second pressure wheel 220 to move close to the first guide wheel 110 and the second guide wheel 120 respectively through the slider 230, so that the film is stably transmitted between the first pressure wheel 210 and the first guide wheel 110, and between the second pressure wheel 220 and the second guide wheel 120. At this time, since the first guide wheel 110 is correspondingly provided with two groups of first pressure wheels 210, the film can be accurately controlled to enter between the first guide wheel 110 and the first pressure wheel 210. At this time, the first pressure wheel 210 and the second pressure wheel 220 with large surface friction force are pressed on the back of the metal film to provide the friction force required to fix the film, while the metal surface of the film on the other side contacts the first guide wheel 110 and the second guide wheel 120 with smooth surface, thereby reducing the damage to the metal surface of the film, so that the first pressure wheel 210 and the second pressure wheel 220 can form a bilateral relative motion with the metal film to avoid the metal film from deflecting during the winding process. When the film on the reel reaches the preset thickness, the metal film is cut off at the position of the groove 130 by the cutting part. At this time, after the cutting part cuts off the film, it can effectively fix the metal film located above and below the film fixing structure, avoid the metal film from slipping and deflecting when the equipment is running to collect the film, and avoid wear and tear that leads to a reduction in the capacity of the capacitor core. The entire winding process is efficient and controllable, avoiding the deviation of the film, and also avoiding damage caused by excessive external force on the film, thereby improving the operating stability of the winding device.

[0038] From the above description, it can be seen that the film fixing structure and the winding device of the utility model can stably transfer the film between the first guide wheel 110 and the first pressure wheel 210, and between the second guide wheel 120 and the second pressure wheel 220 by setting the fixing component 100 and the movable component 200, and drive the first pressure wheel 210 and the second pressure wheel 220 to fit the fixing component 100 through the movable component 200 so that the film can be accurately fixed between the fixing component 100 and the movable component 200, thereby ensuring the positioning accuracy of the winding device; by setting the first pressure wheel 210 and the second pressure wheel 220, the flexible material covering the surface of the first pressure wheel 210 and the second pressure wheel 220 increases the friction between the film and the movable component 200, thereby avoiding the deviation of the film and also avoiding the damage caused by excessive external force on the film, thereby improving the operating stability of the winding device.

[0039] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A film fixing structure, characterized in that: It comprises a fixed component and a movable component; the fixed component is provided with a first guide wheel and a second guide wheel, and the movable component is provided with a first pressure wheel matched with the first guide wheel and a second pressure wheel matched with the second guide wheel; The movable component drives the first pressure wheel and the second pressure wheel to move respectively in contact with the first guide wheel and the second guide wheel, so that the film is fixed between the fixed component and the movable component; a groove matching the film is provided between the first guide wheel and the second guide wheel; the surfaces of the first pressure wheel and the second pressure wheel are covered with flexible material.

2. A film fixing structure according to claim 1, characterized in that: The fixing assembly also includes a rotating shaft, and the first guide wheel and the second guide wheel are both movably connected to the rotating shaft through a connecting block.

3. A film fixing structure according to claim 2, characterized in that: A plurality of groups of the first guide wheels and the second guide wheels are evenly distributed on the rotating shaft.

4. A film fixing structure according to claim 2, characterized in that: The groove is located in the middle of the connecting block.

5. A film fixing structure according to claim 4, characterized in that: The cross section of the groove is rectangular.

6. A film fixing structure according to claim 1, characterized in that: The movable assembly further comprises a slider, one end of which is movably connected to the first pressing wheel and the second pressing wheel, and the other end of which is connected to a driving device.

7. A film fixing structure according to claim 6, characterized in that: The moving direction of the sliding block is perpendicular to the plane where the groove is located.

8. A film fixing structure according to claim 7, characterized in that: A cutting portion is also provided between the slide blocks, and the cutting portion is directly opposite to the groove.

9. A film fixing structure according to claim 6, characterized in that: The flexible material covering the surfaces of the first pressing wheel and the second pressing wheel is rubber.

10. A winding device, characterized in that: The invention comprises a film fixing structure as claimed in any one of claims 1 to 9.

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