Capacitor winder with adjustable tension
By introducing a tension adjustment mechanism and a coordinated control cutting and hot welding mechanism into the capacitor winding machine, the problem of uneven tension in traditional winding machines has been solved, and high-quality automated production of capacitor cores has been achieved.
Patent Information
- Application Number
- CN202522085149.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-27
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-27
AI Technical Summary
Traditional capacitor winding machines have significant defects in tension control, resulting in uneven bonding between the aluminum foil and the film layer, creating gaps or wrinkles, which affect the structural compactness and electrical performance of the capacitor core.
An adjustable tension capacitor winding machine is used. The tension adjustment mechanism, which includes a frame and two rotating rollers, dynamically controls the film tension. Combined with the cutting and hot welding mechanism, it achieves automated, high-quality production.
To ensure that the aluminum foil and film maintain constant tension during the winding process, avoid tension fluctuations, achieve precise cutting and reliable welding, and improve the production quality of capacitor cores.
Smart Images
Figure CN224682950U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of winding machine technology, and in particular relates to an adjustable tension capacitor winding machine. Background Technology
[0002] In the capacitor manufacturing industry, the winding machine is a core production piece of equipment, and its performance directly affects the quality and production efficiency of capacitors. Traditional capacitor winding machines mainly achieve the winding and forming of aluminum foil and film through mechanical transmission, but they have significant defects in tension control: existing technologies mostly adopt passive tension adjustment methods, such as maintaining film tension through counterweights or spring clamping mechanisms. This method is prone to tension fluctuations at high speeds, resulting in uneven adhesion between the aluminum foil and film layers, producing gaps or wrinkles, which seriously affect the structural compactness and electrical performance of the capacitor core. Utility Model Content
[0003] The purpose of this invention is to provide an adjustable tension capacitor winding machine, which aims to solve the technical problem of fluctuation error caused by uneven tension during the winding process in existing winding machines.
[0004] To achieve the above objectives, this utility model provides an adjustable tension capacitor winding machine, including a substrate, and further including an unwinding mechanism, a winding head, a tension adjusting mechanism, a cutting mechanism, and a hot welding mechanism disposed on the substrate.
[0005] The unwinding mechanism carries and releases the aluminum foil and the optical film;
[0006] A winding head is used to clamp aluminum foil and optical film and rotate and wind them together to form a capacitor core;
[0007] A cutting mechanism, located on one side of the winding head, is used to cut off excess aluminum foil and optical film;
[0008] A hot welding mechanism is located on the other side of the winding head and is used to hot weld and fix the aluminum foil and optical film on the outer surface of the capacitor core.
[0009] A tension adjustment mechanism is located between the unwinding mechanism and the winding head. The tension adjustment mechanism includes a frame, a drive source, and two rotating rollers. The frame is mounted on the substrate. The drive source is mounted on the other side of the substrate and is rotatably connected to the frame. The two rotating rollers are spaced apart on the frame and rotate synchronously with the frame under the drive of the drive source. The two sides of the aluminum foil or optical film abut against the two rotating rollers.
[0010] Furthermore, the two rotating rollers are located on the same straight line as the frame.
[0011] Furthermore, a transmission plate is fixedly connected between the two rotating rollers.
[0012] Furthermore, the unwinding mechanism includes a support roller and a tension roller. The aluminum foil disc carrying the aluminum foil and the optical film disc carrying the optical film are respectively sleeved on the support roller. Several tension rollers for adjusting tension are arranged on the substrate. The aluminum foil and the optical film pass through the tension rollers in sequence and are connected to the winding head.
[0013] Furthermore, the aluminum foil trays are configured in two groups, the optical film trays are configured in one group, and the optical film trays are disposed between the two aluminum foil trays; corresponding to the support rollers, there are three groups.
[0014] Furthermore, the tension adjustment mechanism is configured in three groups, all located below the support roller.
[0015] Furthermore, the cutting mechanism includes a cutter and a cutting cylinder. The cutting cylinder is disposed on the substrate, and its drive end is connected to the cutter. The cutter moves toward or away from the winding head.
[0016] Furthermore, the hot welding mechanism includes a hot welding head and a hot welding cylinder. The hot welding cylinder is disposed on the substrate, and its drive end is connected to the hot welding head. The hot welding head moves toward or away from the winding head.
[0017] The adjustable tension capacitor winding machine provided in this utility model embodiment has at least one of the following technical effects:
[0018] After the equipment starts, the unwinding mechanism simultaneously releases the aluminum foil and optical film. Both enter the tension adjustment mechanism via guide rollers. At this time, the drive source drives the frame to rotate the two rotating rollers synchronously. By adjusting the rotation speed, the film tension is dynamically controlled, ensuring that the aluminum foil and optical film maintain constant tension throughout their journey. The film then enters the winding head, which rotates to precisely wind the aluminum foil and optical film to form the capacitor core. During this process, the tension adjustment mechanism detects changes in the winding diameter in real time and automatically compensates for tension. When the preset number of layers is reached, the cutting mechanism quickly cuts off the excess film. Simultaneously, the two rotating rollers of the tension adjustment mechanism immediately apply reverse tension to prevent the film from springing back, ensuring a clean cut. Next, the heat welding mechanism moves to the outer surface of the capacitor core and precisely heat welds the cut film ends, completing the automated winding and forming of the entire capacitor core. The entire process requires no manual intervention; the various mechanisms work together to achieve stable tension, precise cutting, and reliable welding, resulting in high-quality production. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 A front view of an adjustable tension capacitor winding machine provided in an embodiment of this utility model;
[0021] Figure 2 A schematic diagram of the tension adjustment mechanism of the adjustable tension capacitor winding machine provided in this embodiment of the utility model;
[0022] The following are the labeling elements in the figure:
[0023] 100. Substrate;
[0024] 200. Unwinding mechanism; 210. Support roller; 220. Tension roller; 230. Aluminum foil tray; 240. Light film tray;
[0025] 300. Winding head;
[0026] 400. Cutting mechanism; 410. Cutting blade; 420. Cutting cylinder;
[0027] 500. Hot welding mechanism; 510. Hot welding head; 520. Hot welding cylinder;
[0028] 600. Tension adjustment mechanism; 610. Frame; 620. Rotating roller; 630. Transmission plate. Detailed Implementation
[0029] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings 1-2, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description is based on the accompanying drawings. Figure 1-2 The described embodiments are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.
[0030] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0032] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.
[0033] In one embodiment of the present invention, an adjustable tension capacitor winding machine is disclosed, including a substrate 100, and further including an unwinding mechanism 200, a winding head 300, a tension adjusting mechanism 600, a cutting mechanism 400, and a hot welding mechanism 500 disposed on the substrate 100.
[0034] Unwinding mechanism 200, which carries and releases aluminum foil and optical film;
[0035] The winding head 300 is used to clamp aluminum foil and optical film and rotate and wind them together to form a capacitor core;
[0036] The cutting mechanism 400 is located on one side of the winding head 300 and is used to cut off excess aluminum foil and light film;
[0037] The hot welding mechanism 500 is located on the other side of the winding head 300 and is used to hot weld and fix the aluminum foil and optical film on the outer surface of the capacitor core.
[0038] The tension adjustment mechanism 600 is located between the unwinding mechanism 200 and the winding head 300. The tension adjustment mechanism 600 includes a frame 610, a drive source (not shown), and two rotating rollers 620. The frame 610 is mounted on the substrate 100. The drive source is mounted on the other side of the substrate 100 and is rotatably connected to the frame 610. The two rotating rollers 620 are spaced apart on the frame 610. Under the drive of the drive source, the two rotating rollers 620 rotate synchronously with the frame 610. The two sides of the aluminum foil or optical film abut against the two rotating rollers 620.
[0039] Specifically, after the equipment starts, the unwinding mechanism 200 simultaneously releases the aluminum foil and optical film, which then enter the tension adjustment mechanism 600 via guide rollers. At this time, the drive source drives the frame 610 to rotate the two rotating rollers 620 synchronously. By adjusting the rotation speed, the film tension is dynamically controlled, ensuring that the aluminum foil and optical film maintain a constant tension throughout their journey. Subsequently, the film enters the winding head 300, which rotates to precisely wind the aluminum foil and optical film to form the capacitor core. During this process, the tension adjustment mechanism 600 detects changes in the winding diameter in real time and automatically compensates for the tension. When the preset number of layers is reached, the cutting mechanism 400 quickly cuts off the excess film. Simultaneously, the two rotating rollers 620 of the tension adjustment mechanism 600 immediately apply reverse tension to prevent the film from springing back, ensuring a clean cut. Immediately afterwards, the hot-welding mechanism 500 moves to the outer surface of the capacitor core and precisely hot-welds the cut film ends, completing the automated winding and forming of the entire capacitor core. The entire process requires no manual intervention; the various mechanisms achieve high-quality production with stable tension, precise cutting, and reliable welding through coordinated control.
[0040] Furthermore, the two rotating rollers 620 are aligned with the frame 610. A transmission plate 630 is fixedly connected between the two rotating rollers 620. When the drive source is started, the frame 610 drives the two rotating rollers 620 to rotate synchronously. Since the two rollers are coaxially arranged with the frame 610, no eccentric force is generated during rotation, thus ensuring uniform force on the aluminum foil and film during transport. When the winding head 300 starts rotating, the tension adjustment mechanism 600 adjusts the rotation speed of the rotating rollers 620 according to the real-time tension changes of the film. Since the two rollers are aligned with the frame 610, the adjustment process is more linear, avoiding film deviation or uneven tension caused by roller misalignment. When the drive source is started, the transmission plate 630 ensures that the rotation speeds of the two rollers are completely consistent, avoiding film tension fluctuations caused by single roller lag. During the winding process, if the winding head 300 accelerates or decelerates, the transmission plate 630 can quickly transmit the driving force, enabling the two rollers to adjust their rotation speeds synchronously and maintain the stability of the film tension.
[0041] Furthermore, the unwinding mechanism 200 includes a support roller 210 and a tension roller 220. An aluminum foil tray 230 carrying the aluminum foil and a film tray 240 carrying the optical film are respectively mounted on the support roller 210. Several tension rollers 220 for adjusting tension are disposed on the substrate 100. The aluminum foil and optical film pass sequentially through the tension rollers 220 and are connected to the winding head 300. Specifically, the aluminum foil and optical film are released from their respective trays, and after their tension is adjusted by the multiple tension rollers 220 and the tension adjustment mechanism 600, they enter the winding head 300. The tension rollers 220 can automatically fine-tune according to the tightness of the film to ensure uniform film tension entering the winding head 300. When the winding head 300 rotates, the unwinding mechanism 200 continuously feeds material, and the tension rollers 220 compensate in real time for changes in linear speed caused by the increase in winding diameter, preventing the film from being too tight or too loose.
[0042] Furthermore, there are two sets of aluminum foil trays 230 and one set of optical film trays 240, with the optical film trays 240 positioned between the two aluminum foil trays 230; correspondingly, there are three sets of support rollers 210. Three tension adjustment mechanisms 600 are also provided, all located below the support rollers 210. Each of the three tension adjustment mechanisms 600 corresponds to one roll of optical film and one roll of aluminum foil. Each mechanism independently adjusts the tension of its corresponding film. A layer of optical film is sandwiched between the two aluminum foils. When the winding head 300 starts rotating, the three tension adjustment mechanisms 600 dynamically adjust the rotation speed of the rotating rollers 620 based on the real-time tension feedback of the film, ensuring tension matching between the aluminum foil and the optical film and preventing misalignment or wrinkles due to uneven tension.
[0043] Furthermore, the cutting mechanism 400 includes a cutter 410 and a cutting cylinder 420. The cutting cylinder 420 is mounted on the substrate 100, and its drive end is connected to the cutter 410. The cutter 410 moves closer to or away from the winding head 300. When the preset number of layers is reached, the cutting cylinder 420 drives the cutter 410 to quickly approach the winding head 300 along a straight trajectory. With the cooperation of the tension adjustment mechanism 600 applying reverse tension, the cutter 410 instantly cuts the aluminum foil and the optical film. After cutting, it returns to its original position, waiting to repeat the next operation.
[0044] Furthermore, the hot welding mechanism 500 includes a hot welding head 510 and a hot welding cylinder 520. The hot welding cylinder 520 is disposed on the substrate 100, and its drive end is connected to the hot welding head 510. The hot welding head 510 moves closer to or away from the winding head 300. When the winding head 300 detects that winding is complete and the cutting mechanism 400 has completed cutting, the hot welding cylinder 520 quickly heats the welding head onto the material film on the winding head 300 to attach the last material film to the next layer film.
[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An adjustable tension capacitor winding machine, comprising a substrate, characterized in that, It also includes an unwinding mechanism, a winding head, a tension adjusting mechanism, a cutting mechanism, and a thermal welding mechanism disposed on the substrate; The unwinding mechanism carries and releases the aluminum foil and the optical film; A winding head is used to clamp aluminum foil and optical film and rotate and wind them together to form a capacitor core; A cutting mechanism, located on one side of the winding head, is used to cut off excess aluminum foil and optical film; A hot welding mechanism is located on the other side of the winding head and is used to hot weld and fix the aluminum foil and optical film on the outer surface of the capacitor core. A tension adjustment mechanism is located between the unwinding mechanism and the winding head. The tension adjustment mechanism includes a frame, a drive source, and two rotating rollers. The frame is mounted on the substrate. The drive source is mounted on the other side of the substrate and is rotatably connected to the frame. The two rotating rollers are spaced apart on the frame and rotate synchronously with the frame under the drive of the drive source. The two sides of the aluminum foil or optical film abut against the two rotating rollers.
2. The adjustable tension capacitor winding machine according to claim 1, characterized in that, The two rotating rollers are located on the same straight line as the frame.
3. The adjustable tension capacitor winding machine according to claim 1, characterized in that, A transmission plate is fixedly connected between the two rotating rollers.
4. The adjustable tension capacitor winding machine according to claim 1, characterized in that, The unwinding mechanism includes a support roller and a tension roller. An aluminum foil disc carrying aluminum foil and a light film disc carrying light film are respectively sleeved on the support roller. Several tension rollers for adjusting tension are arranged on the substrate. The aluminum foil and light film pass through the tension rollers in sequence and are connected to the winding head.
5. The adjustable tension capacitor winding machine according to claim 4, characterized in that, The aluminum foil trays are arranged in two groups, the optical film trays are arranged in one group, and the optical film trays are arranged between the two aluminum foil trays; corresponding to the support rollers, there are three groups.
6. The adjustable tension capacitor winding machine according to claim 5, characterized in that, The tension adjustment mechanism is configured in three groups, all located below the support roller.
7. The adjustable tension capacitor winding machine according to claim 1, characterized in that, The cutting mechanism includes a cutter and a cutting cylinder. The cutting cylinder is mounted on the base plate, and its drive end is connected to the cutter. The cutter moves toward or away from the winding head.
8. The adjustable tension capacitor winding machine according to claim 1, characterized in that, The hot welding mechanism includes a hot welding head and a hot welding cylinder. The hot welding cylinder is disposed on the substrate, and its drive end is connected to the hot welding head. The hot welding head moves toward or away from the winding head.