A capacitor film cutting and positioning device

Abstract

This utility model discloses a capacitor film cutting and positioning device, including a film cutting table, a film laying assembly, and an edge-pressing positioning assembly. The surface of the film cutting table is provided with a support roller for supporting the transmission of the film material. The film laying assembly includes a main roller, a shaft, and a counterweight plate. The main roller and the shaft are arranged opposite to each other and can be rotatably installed. Several crank blocks and pressure rollers are connected to the surface of the shaft. The eccentric torque formed by the counterweight plate and the hook weight realizes the dynamic pressing and flattening of the film material. The surface of the main roller is provided with flexible spiral ridges to enhance the film spreading friction effect. The edge-pressing positioning assembly includes a fixed base, a movable lug block, a pressure roller, and a servo motor. The servo motor drives the rotating rod and the connecting rod to drive the pressure roller to deflect. The pressure roller contacts the edge of the film material to realize the positioning of the film material. This utility model has the advantages of high film spreading efficiency, good edge positioning accuracy, and strong structural linkage, and is suitable for the pre-processing of sheet materials such as capacitor films.

Description

Technical Field

[0001] This utility model relates to the technical field of membrane material processing equipment, specifically a capacitor film cutting and positioning device. Background Technology

[0002] As a key material in electronic components, capacitor film typically requires spreading and flattening before cutting to ensure dimensional accuracy and consistent quality of the finished film. In traditional processing, the capacitor film is guided by a feeding mechanism through a spreading platform or conveyor line, supported and driven by several rollers. Some systems incorporate tension rollers or pressure rollers in the spreading area to improve film flatness.

[0003] However, existing film spreading equipment typically has the following shortcomings:

[0004] The film spreading process relies on a single pressure roller or mechanical stretching mechanism, which has limited flattening effect. Traditional devices often use one or more pressure rollers to apply pressure, lacking dynamic bonding and directional control methods. Especially when the initial tension of the film material is insufficient or the film material is deformed, it is difficult to achieve full flattening, which makes the film material prone to defects such as folding and wrinkling during subsequent cutting.

[0005] The edge positioning structure of the membrane material is imperfect, resulting in unstable precision control. Some existing technologies only use fixed-width limiting blocks or edge guide rollers for simple edge positioning, which cannot dynamically respond to problems such as membrane material deviation or edge drift. Especially when the width of the membrane material changes or the tension fluctuates, the edge alignment is prone to failure, affecting the subsequent cutting accuracy.

[0006] Therefore, there is an urgent need for a capacitor film cutting and positioning device with dynamic film spreading function, precise edge positioning structure, and inter-module linkage control, in order to improve film material processing efficiency and positioning accuracy and meet the needs of high-precision film material processing technology. Utility Model Content

[0007] This invention provides a capacitor film cutting and positioning device, aiming to solve problems such as low film spreading efficiency, poor edge positioning accuracy, and insufficient structural linkage coordination in existing devices. Through the coordinated operation of the film spreading assembly and the edge pressing positioning assembly, this device achieves efficient flattening and precise edge positioning of the capacitor film during the transmission process, improving the automation level and precision control capability of the pre-cutting treatment of the film material.

[0008] Therefore, the technical solution adopted by this utility model is as follows: a capacitor film cutting and positioning device, including a film cutting table, a film laying assembly, and a pressure positioning assembly. The surface of the film cutting table is provided with several support rollers arranged corresponding to the film laying assembly and the pressure positioning assembly. The film laying assembly includes a main roller, a shaft, and eccentric discs fixed to both ends of the shaft. The main roller and the shaft are rotatably mounted on the surface of the film cutting table, with the shaft located directly above the main roller. Several crank blocks are fixedly mounted on the surface of the shaft, and a pressure roller is rotatably mounted at one end of each crank block. A spiral ridge is formed on the surface of the main roller. The pressure positioning assembly includes a fixed... The structure comprises a base, a movable lug, and a pressure roller rotatably mounted on the surface of the movable lug. A fixed base is fixed to the surface of the film cutting table, and a servo motor is fixedly mounted on the surface of the fixed base. Parallel rotating rods and connecting rods are rotatably mounted on the surface of the fixed base, with two sets of rotating rods and connecting rods symmetrically arranged about the centerline of the fixed base. Both rotating rods have toothed discs on their surfaces, which mesh with each other for transmission. The output end of the servo motor meshes with the toothed disc on one of the rotating rods. The pressure roller is rotatably mounted on the surface of the movable lug, and its contact with the surface of the bearing roller enables edge positioning of the capacitor film. This structure achieves stable film spreading and high-precision edge positioning during travel, with strong overall operational coordination.

[0009] In a preferred embodiment, the present invention can be further configured such that: the center of mass of the eccentric disc is offset from the axis of the shaft, and the connection direction between the center of mass of the eccentric disc and the axis of the shaft is the same as that of the crank block; the surface of the eccentric disc is provided with a plurality of through holes located on the outer periphery, and hooks can be detachably installed in the through holes.

[0010] Specifically, the eccentrically arranged counterweight and the hook weight work together to generate a periodic deflection torque, thereby dynamically controlling the pressure roller to hold the film material and improving the film spreading and bonding effect.

[0011] In a preferred embodiment, the present invention can be further configured such that the spiral ridges on the surface of the roller are of a two-segment structure, and the two spiral ridges are arranged symmetrically about the center line of the roller, with the spiral directions of the two spiral ridges being opposite.

[0012] Specifically, the film material is automatically spread to both sides on the surface of the roller through the spiral rib structure with opposite rotation, which improves the uniformity and spreading efficiency of the film.

[0013] In a preferred embodiment, the present invention can be further configured such that the spiral ridge is a convex structure protruding from the surface of the entire roller, and the spiral ridge is a flexible rubber component.

[0014] Specifically, the flexible rubber structure improves the stability of frictional contact with the membrane material, effectively buffers membrane tension fluctuations, and prevents the membrane surface from slipping or shifting.

[0015] In a preferred embodiment, the present invention can be further configured such that the rotating rod and the connecting rod are parallel to each other, and the two ends of the rotating rod and the connecting rod are respectively rotatably connected to the surface of the fixed seat and the moving lug block.

[0016] Specifically, ensuring consistent and stable operation of the transmission structure after the servo motor outputs is beneficial for precise adjustment of the pressure wheel position.

[0017] In a preferred embodiment, the present invention can be further configured such that the pressure roller is a rubber roller structure, and the pressure roller extends along the bearing roller axis toward the midpoint of the bearing roller.

[0018] Specifically, large-sized rubber pressure rollers can stably hold the edge of the film, adapt to the positioning needs of film materials of different widths, and improve versatility and adaptability.

[0019] In a preferred embodiment, the present invention can be further configured such that the servo is a motor structure used to drive the deflection motion of the lever, thereby adjusting the position of the lug block and the pressure wheel.

[0020] Specifically, the positioning components are automatically adjusted via servo motors, resulting in rapid response, high control precision, and meeting dynamic operation requirements.

[0021] The beneficial effects achieved by this utility model are as follows:

[0022] 1. In this utility model, by setting up a film-laying assembly, including a whole roller, shaft, crank block, pressure roller, eccentric disc and hook, the eccentric torque generated by the eccentric disc and hook drives the pressure roller to dynamically press and adhere the capacitor film. Combined with the swivel structure, the film material not only adheres tightly to the surface of the whole roller during the spreading process, but also achieves bidirectional extension along the surface of the whole roller, thereby improving the film material flattening efficiency and spreading quality, and effectively avoiding the phenomenon of wrinkles or local arching of the film material during transmission.

[0023] 2. In this utility model, the edge positioning component employs a servo drive mechanism in conjunction with two sets of linked rotating rods and connecting rods to control the precise movement of the moving lug and the pressure roller, ensuring stable contact between the pressure roller and the edge of the film material, thus achieving high-precision edge positioning. The rubber pressure roller structure has excellent flexibility and adaptability, effectively buffering minor vibrations of the film material, improving the positioning accuracy and stability of the film material edge, and thereby ensuring dimensional consistency and process quality in subsequent cutting operations. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the film-laying assembly structure according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the shaft and roller structure according to one embodiment of the present invention;

[0027] Figure 4This is a schematic diagram of the installation structure of the pressure positioning component according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of a pressure positioning component according to an embodiment of the present invention.

[0029] Figure label:

[0030] 100. Film cutting table; 110. Bearing roller;

[0031] 200. Film laying assembly; 210. Roller; 220. Shaft; 230. Weight plate; 211. Rotary rib; 221. Crank block; 222. Pressure roller; 231. Hook;

[0032] 300. Pressure positioning assembly; 310. Fixed base; 320. Moving lug; 330. Pressure roller; 340. Servo motor; 311. Rotary rod; 312. Connecting rod; 313. Rotary gear plate. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0034] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.

[0035] The following describes, with reference to the accompanying drawings, some embodiments of a capacitor film cutting and positioning device provided by this utility model.

[0036] Combination Figures 1-5 As shown, the present invention provides a capacitor film cutting and positioning device, including a film cutting table 100, a film laying assembly 200, and a pressure positioning assembly 300.

[0037] The membrane cutting table 100 is the basic support platform for membrane material transmission. Several support rollers 110 are provided on its surface to support the capacitor membrane and provide rolling support during the movement of the membrane material, ensuring that the membrane material runs smoothly during longitudinal transmission.

[0038] The film-laying assembly 200 is located at the front of the film-cutting table 100. The film-laying assembly 200 includes a main roller 210, a shaft 220, and eccentric discs 230 fixed to both ends of the shaft 220. The main roller 210 and the shaft 220 are both mounted on the surface of the film-cutting table 100 via rotating connecting parts such as bearings, with the shaft 220 located directly above the main roller 210. Several crank blocks 221 are evenly mounted on the surface of the shaft 220, with one end of each crank block 221 rotatably connected to a pressure roller 222. The surface of the main roller 210 is provided with spiral ridges 211, which are convex structures protruding from the surface of the main roller 210 to increase the contact friction with the film material, causing the film material to extend along the surface of the main roller 210 to both ends.

[0039] In use, the membrane material is fed onto the film cutting table 100 by the feeding mechanism and driven forward under the support of the bearing roller 110. After the membrane material enters the area of ​​the film laying assembly 200, it is pressed against the roller 210 by the pressure of the pressure roller 222 under the rotational cooperation of the shaft 220 and the roller 210. Since the center of mass of the eccentric disk 230 is offset from the axis of the shaft 220 and the direction of the center of mass is the same as that of the crank block 221, together with the hook 231 detachably installed in the through hole on the surface of the eccentric disk 230, they together form an eccentric torque, which causes the shaft 220 to drive the crank block 221 and the pressure roller 222 to deflect periodically during the rotation, thereby driving the pressure roller 222 to periodically press the membrane material, so that the membrane material is tightly attached to the surface of the roller 210 and promotes the flattening of the membrane material. Meanwhile, the spiral ridges 211 on the surface of the roller 210 cause the film material to extend along both sides of the roller 210 surface through rotational friction, effectively realizing the film spreading operation and improving the film spreading effect and transmission stability.

[0040] The spiral ridge 211 is made of flexible rubber to improve its adaptability to the film surface and friction. The spiral ridge 211 is designed as a two-section structure, with the two sections of spiral ridge 211 arranged symmetrically with respect to the center line of the whole roller 210, and the spiral directions of the two sections of spiral ridge 211 are opposite, which is conducive to automatically unfolding the film from the middle to both sides and enhancing the uniformity of film unfolding.

[0041] After the membrane material is laid out, it continues to be driven to the pressure positioning assembly 300 area. The pressure positioning assembly 300 includes a fixed base 310, a movable lug 320, and a pressure roller 330. The fixed base 310 is fixedly installed on the surface of the membrane cutting table 100 to support the entire positioning structure. The movable lug 320 is installed on the fixed base 310 through a rotating connector and can swing or deflect under the drive of the servo motor 340, thereby driving the pressure roller 330 to contact the edge of the membrane material.

[0042] A servo motor 340 is mounted on the surface of the fixed base 310. Its output end meshes with a geared disc 313 on the rotating rod 311, driving two symmetrically arranged rotating rods 311 and connecting rods 312 to deflect. The two sets of rotating rods 311 and connecting rods 312 are arranged parallel to each other and are rotatably connected to the surfaces of the fixed base 310 and the movable lug 320, respectively. The geared discs 313 on the surface of the rotating rods 311 mesh with each other, so that when one side rotates, the other side moves synchronously, realizing synchronous drive adjustment of the movable lug 320. By controlling the servo motor 340, the position of the movable lug 320 can be precisely adjusted, thereby adjusting the contact position and pressure between the pressure roller 330 and the edge of the film material.

[0043] The pressure roller 330 is a rubber roller structure. Its axial length extends along the direction of the bearing roller 110 and is preferably arranged symmetrically on both sides of the midpoint of the bearing roller 110. It is used to stably press the edge of the film material to prevent the film material from shifting laterally or wrinkling during transmission, thereby achieving precise positioning of the edge of the film material and ensuring the positional accuracy and dimensional consistency of the film material in subsequent cutting operations.

[0044] With the above-mentioned structure, this utility model can realize a series of operations such as membrane material input, spreading, and edge positioning during use, forming a complete membrane material cutting preparation process, improving the level of automation, operation accuracy and work efficiency.

[0045] Working principle and usage process of this utility model:

[0046] This utility model provides a capacitor film cutting and positioning device, which is mainly used for the spreading and edge positioning of capacitor film materials before cutting. The device mainly includes a film cutting table 100, a film laying assembly 200, and an edge pressing and positioning assembly 300. The components work together to achieve efficient spreading and precise positioning of the capacitor film.

[0047] During use, the membrane material is guided into the membrane cutting table 100 by the upstream feeding mechanism and driven forward under the support of the bearing roller 110 on the surface of the membrane cutting table 100. The membrane material first passes through the film laying assembly 200, and under the joint rotation of the whole roller 210 and the shaft 220, the membrane material is tensioned and flattened during its journey. The crank block 221 on the shaft 220 drives the pressure roller 222 to periodically contact the surface of the whole roller 210. Under the combined action of the eccentric torque of the eccentric plate 230 and the hook 231, dynamic pressing of the membrane material is achieved, which makes the membrane surface tightly adhere to the surface of the whole roller 210. During the rotation of the whole roller 210 and the membrane transmission, the membrane extends to both ends along the surface of the whole roller 210, so that the membrane is spread during transmission, thereby achieving efficient spreading.

[0048] After the film is spread, it continues to move and enters the area where the pressure positioning assembly 300 is located. During this process, the servo motor 340 drives the rotating rod 311 and the connecting rod 312 in conjunction, which in turn drives the movable lug block 320 to adjust its position, thereby controlling the contact state of the pressure roller 330 relative to the support roller 110. The pressure roller 330 can stably hold the edge of the film, achieving precise positioning of the film edge in the lateral direction, ensuring its dimensional accuracy and cutting stability in subsequent cutting processes.

[0049] Through the above steps, this utility model realizes the fully automated processing of membrane materials from input, spreading, positioning to cutting preparation, and has technical advantages such as high spreading efficiency, good edge positioning accuracy, and strong structural linkage and coordination.

[0050] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A capacitive film cutting and positioning device, characterized by, include: The film cutting table (100), film laying assembly (200), and pressure positioning assembly (300) are provided on the surface of the film cutting table (100), which are arranged corresponding to the film laying assembly (200) and the pressure positioning assembly (300). The film laying assembly (200) includes a whole roller (210), a shaft (220), and a counterweight plate (230) fixed at both ends of the shaft (220). The whole roller (210) and the shaft (220) are rotatably mounted on the surface of the film cutting table (100), and the shaft (220) is located directly above the whole roller (210). A number of crank blocks (221) are fixedly mounted on the surface of the shaft (220), and a pressure roller (222) is rotatably mounted on one end of the crank block (221). A spiral ridge (211) is opened on the surface of the whole roller (210). The pressure positioning assembly (300) includes a fixed base (310), a movable lug (320), and a pressure roller (330) rotatably mounted on the surface of the movable lug (320). The fixed base (310) is fixed to the surface of the film cutting table (100). A servo motor (340) is fixedly mounted on the surface of the fixed base (310), and two sets of parallel rotating rods (311) and connecting rods (312) are rotatably mounted on the surface of the fixed base (310). Rotary gears (313) are provided on the surfaces of the rotating rods (311) on both sides, and the rotating gears (313) on the surfaces of the two rotating rods (311) mesh with each other for transmission. The output end of the servo motor (340) meshes with the rotating gear (313) on the surface of one of the rotating rods (311) for transmission. The pressure roller (330) is rotatably mounted on the surface of the movable lug (320), and performs edge positioning of the capacitor film by abutting against the surface of the bearing roller (110).

2. The capacitive film cutting and positioning apparatus of claim 1, wherein, The center of mass of the eccentric disc (230) is offset from the axis of the shaft (220), and the connection direction between the center of mass of the eccentric disc (230) and the axis of the shaft (220) is the same as that of the crank block (221); the surface of the eccentric disc (230) is provided with a plurality of through holes located on the outer periphery, and the through holes are detachably fitted with weights (231).

3. The capacitor film cutting and positioning device according to claim 1, characterized in that, The spiral ridge (211) has a two-segment structure, and the two spiral ridges (211) are arranged symmetrically about the center line of the whole roller (210), and the spiral directions of the two spiral ridges (211) are opposite.

4. The capacitor film cutting and positioning device according to claim 1, characterized in that, The spiral ridge (211) is a convex structure that protrudes from the surface of the roller (210), and the spiral ridge (211) is a flexible rubber component.

5. The capacitor film cutting and positioning device according to claim 1, characterized in that, The rotating rod (311) and the connecting rod (312) are parallel to each other, and the two ends of the rotating rod (311) and the connecting rod (312) are rotatably connected to the surfaces of the fixed seat (310) and the movable lug (320), respectively.

6. The capacitor film cutting and positioning device according to claim 1, characterized in that, The pressure roller (330) is a rubber roller structure, and the pressure roller (330) extends along the axial direction of the bearing roller (110) toward the midpoint of the bearing roller (110).

7. The capacitor film cutting and positioning device according to claim 1, characterized in that, The servo motor (340) is an electric motor structure used to drive the rotating rod (311) to deflect, thereby adjusting the position of the lug block (320) and the pressure wheel (330).

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