Winding and pressing integrated forming machine for high-voltage buckle type capacitor

Abstract

The invention relates to the technical field of capacitor processing, and discloses a winding and pressing integrated forming machine for a high-voltage buckle capacitor, which comprises a cabinet bearing integral structure; the film material conveying assembly is arranged on the cabinet, comprises a conveying frame, a guide rod, a rotary drum and a bearing, and conveys positive and negative electrode foils and diaphragms; the tension control assembly comprises a supporting plate, a tension frame and a detector and regulates and controls winding tension in real time. The winding and pressing assembly integrates a pressing frame, a motor, a belt wheel and a main shaft and winds a film material into a core body; the pressing execution assembly comprises a roller, an air cylinder and a pressing seat and is used for pressing the core body in real time. The winding assembly and the pressing assembly are linked at the same station, tension and pressure are dynamically matched through an air cylinder and a motor, and integrated forming is achieved. The winding and pressing assembly and the pressing execution assembly are coordinated through space integration and movement, and core deformation caused by multi-station conversion is effectively eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of capacitor processing, and in particular to a high-voltage button-type capacitor winding and pressing integrated forming machine. Background Art

[0002] As a widely used energy storage element in electronic devices, the manufacturing process of button capacitors directly affects product performance and reliability. The production of traditional high-voltage button capacitors usually adopts a split processing mode, that is, the positive and negative electrode foils and diaphragm materials are first wound into a core by a winding device, and then transferred to a pressing station for end face shaping and densification. However, this process has problems such as alignment deviation and core deformation caused by the connection of multiple links. Especially in high-voltage application scenarios, the uneven stress distribution between electrode layers can easily cause local discharge or capacity attenuation. Existing winding equipment generally lacks a real-time feedback mechanism for pressing force, resulting in poor matching between winding tension and subsequent pressing parameters, which makes it difficult to adapt to the precision molding requirements of high-density and thin-layer electrode materials. In addition, the multiple clamping and transportation caused by step-by-step processing not only reduces production efficiency, but also increases the risk of electrode interface contamination.

[0003] Therefore, based on the above technical problems, it is necessary for technicians in this field to develop a high-voltage button-type capacitor winding and pressing integrated molding machine. Summary of the invention

[0004] The object of the present invention is to provide a high voltage button capacitor winding and pressing integrated forming machine to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A technical solution for a high voltage button capacitor winding and pressing integrated forming machine, comprising:

[0007] Cabinet, used to support the overall structure;

[0008] The film material conveying assembly is arranged on the cabinet, and includes a film material conveying frame, a reinforcement guide rod, a conveying drum and a bearing, and is used for continuously conveying positive and negative electrode foils and diaphragm materials;

[0009] The tension control assembly includes a film material support plate, a support column, a tension frame, a mounting frame and a tension detector, which is used to detect and adjust the winding tension in real time;

[0010] The winding and pressing assembly includes a winding and pressing frame, a winding motor, a winding main pulley, a winding auxiliary pulley, a synchronous leather strip, and a winding main shaft, and is used to wind the film material into a core body;

[0011] The pressing actuator assembly includes a pressing roller, a pressing cylinder, a pressing seat, a spring and a pressing seat, which is arranged on the winding pressing frame and is used to press the wound core body in real time;

[0012] The winding and pressing assembly and the pressing actuator assembly are integrated in the same workstation, and the dynamic matching of the winding tension and the pressing force is achieved through the linkage control of the pressing cylinder and the winding motor, thereby completing the integrated forming of winding and pressing.

[0013] As a preferred technical solution, a groove is provided on the winding and pressing frame, and the pressing actuator is installed in the groove.

[0014] As a preferred technical solution, the tension detector is connected to the winding motor signal, and the winding speed and the pressure output of the pressing cylinder are dynamically adjusted by real-time feedback of the film material tension data.

[0015] As a preferred technical solution, the winding and pressing reinforcement rods and the winding and pressing reinforcement bottom beams are symmetrically arranged on the winding and pressing frame to enhance the structural stability during the winding process and reduce the core body deviation.

[0016] As a preferred technical solution, the synchronous leather strip connects the winding main pulley and the winding secondary pulley, is driven to rotate by the winding main shaft, and cooperates with the pressing roller to achieve synchronous execution of the winding and pressing actions.

[0017] As a preferred technical solution, multiple groups of springs are provided between the pressing seat and the pressure seat to buffer the pressing impact and evenly distribute the pressing force to ensure the densification of the core end face. The pressing seat, the pressure seat and the groove are slidably connected.

[0018] As a preferred technical solution, the surface of the lamination roller is provided with alignment lines, which cooperate with the winding main shaft to avoid misalignment between film material layers.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention discloses a high-voltage button capacitor winding and pressing integrated forming machine. The winding and pressing components and the pressing execution components are spatially integrated and coordinated in motion, so as to effectively eliminate the core deformation caused by multi-station conversion. The tension-pressure closed-loop control is adopted to stably control the compression rate of the gap between winding layers within the range of ±1.5μm. The unique spring array and sliding pressing structure design can improve the end surface flatness to below Ra0.8 while maintaining a high-pressure combined force of 5kN-8kN. The synchronous pulley transmission system cooperates with the alignment pattern pressing roller to achieve an interlayer positioning accuracy of 0.02mm. The whole machine is designed with a modular architecture, so that the changeover time is shortened to 1 / 3 of that of traditional equipment, and is particularly suitable for the continuous forming processing of 0.005mm ultra-thin aluminum foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the overall structure of a high voltage button capacitor winding and pressing integrated forming machine;

[0022] Figure 2 for Figure 1 An enlarged schematic diagram of point A of a high voltage button capacitor winding and pressing integrated forming machine;

[0023] Figure 3 It is an isometric schematic diagram of a high voltage button capacitor winding and pressing integrated forming machine;

[0024] Figure 4 This is a schematic diagram of the winding and pressing components of a high-voltage button-type capacitor winding and pressing integrated forming machine.

[0025] In the accompanying drawings: 1, cabinet; 21, film material conveying frame; 22, reinforcement guide rod; 23, conveying drum; 24, bearing; 31, film material support plate; 32, support column; 33, tension frame; 34, mounting frame; 35, tension detector; 4, winding and pressing frame; 41, groove; 42, winding and pressing reinforcement rod; 43, winding and pressing reinforcement bottom beam; 44, winding motor; 45, winding main pulley; 46, winding secondary pulley; 47, synchronous leather strip; 48, winding main shaft; 49, pressing roller; 51, pressing cylinder; 52, pressing seat; 53, spring; 54, pressing seat. DETAILED DESCRIPTION

[0026] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention provides a technical solution for a high-voltage button capacitor winding and pressing integrated forming machine: comprising a cabinet 1, the cabinet 1 is horizontally fixed to a workbench, and a film material conveying assembly is installed on the top of the cabinet. The film material conveying frame 21 is connected to the cabinet 1 by bolts, and the reinforcement guide rods 22 are symmetrically distributed on both sides of the conveying drum 23, and the bearings 24 are embedded in both ends of the conveying drum 23 to ensure that the positive and negative electrode foils and the diaphragm material have no lateral displacement during the conveying process.

[0028] The tension control assembly is installed downstream of the film material conveying assembly. The support column 32 is vertically fixed to the surface of the cabinet 1, the film material support plate 31 is horizontally arranged at the top of the support column 32, the tension frame 33 is hinged to the film material support plate 31 through the mounting frame 34, and the tension detector 35 is integrated inside the tension frame 33 to monitor the film material tension data in real time and feed it back to the control system.

[0029] The winding and pressing frame 4 is rigidly connected to the cabinet 1 by welding. The winding and pressing reinforcement bottom beam 43 extends horizontally along the bottom of the frame, and the winding and pressing reinforcement rods 42 are symmetrically arranged on both sides to form a triangular support structure (such as Figure 4 ), ensure that the torsional strength during winding is ≥500N·m.

[0030] The winding motor 44 is fixed to the side wall of the winding and pressing frame 4, and drives the winding main pulley 45 and the winding secondary pulley 46 through the synchronous leather strip 47, driving the winding main shaft 48 to rotate at a continuously variable speed of 0-300r / min. The surface of the pressing roller 49 is processed with diamond alignment patterns with a depth of 0.1mm and a spacing of 0.5mm, which form a complementary structure with the grooves of the winding main shaft 48 to prevent the misalignment of the film material layers.

[0031] The pressing actuator is embedded in the groove 41 of the winding pressing frame 4. The pressing cylinder 51 is connected to the external air source through the air pipeline. Six groups of springs 53 with a diameter of 15 mm are installed between the pressing seat 52 and the pressing seat 54. The spring preload force is set to 200N. A polytetrafluoroethylene sliding layer is set at the bottom of the pressing seat 54 to ensure that the sliding friction coefficient in the groove 41 is ≤0.05.

[0032] The linkage parameters of the winding motor 44 and the pressing cylinder 51 are set through the PLC controller: when the tension value fed back by the tension detector 35 exceeds the set threshold (such as ±5N), the winding motor 44 automatically reduces its speed to 80% of the original speed, and at the same time, the output pressure of the pressing cylinder 51 is increased to 5kN-8kN, thereby realizing dynamic matching of the winding tension and the pressing force.

[0033] The positive and negative electrode foils and the separator material are respectively guided to the conveying drum 23, and then guided by the reinforced guide rod 22 to enter the tension frame 33. After starting the equipment, the film material is conveyed to the winding spindle 48 at a speed of 1.2 m / min.

[0034] During the rotation of the winding spindle 48, the pressing roller 49 simultaneously applies radial pressure to pre-press each layer of film material. When the core is wound to the target diameter (such as φ8mm), the pressing cylinder 51 drives the pressing seat 54 to move axially along the groove 41, applying a 6kN pressing force to the end face of the core for 3s, so that the end face flatness reaches Ra0.6-0.8.

[0035] After the pressing is completed, the spring 53 is reset to buffer, the winding spindle 48 releases the core, and the device enters the next cycle.

[0036] Tension-pressure closed-loop control: The tension detector 35 has a sampling frequency of 100 Hz and forms a PID regulation loop with the pressing cylinder 51 to stabilize the compression rate of the gap between winding layers at ±1.5 μm.

[0037] Synchronous accuracy: The synchronous leather strip 47 is made of polyurethane, and the tooth shape error is ≤0.02mm, ensuring that the angular displacement synchronization error of the winding spindle 48 and the pressing roller 49 is <0.5°.

[0038] Pressing uniformity: The spring 53 array layout is hexagonal, and the pressure distribution coefficient of variation (CV value) is ≤3%, ensuring the uniformity of the core axial density.

[0039] This embodiment realizes the time and space synchronization of the winding and pressing processes through mechatronic design, effectively solves the core deformation and contamination problems caused by traditional split processing, and is particularly suitable for the production of high-voltage capacitors made of aluminum foil materials with a thickness of ≤0.005mm.

[0040] The working principle and use process of the present invention: After the equipment is started, the winding spindle 48 rotates at a constant angular velocity, and the synchronous leather strip 47 drives the pressing roller 49 to rotate in the same direction. When the first layer of film material contacts the surface of the winding spindle 48, the pressing cylinder 51 immediately applies an initial pressing force of 2kN to make the film material fit tightly with the core rod. As the number of winding layers increases, the tension detector 35 collects the warp tension fluctuation data of the film material in real time. When the tension value is detected to exceed the preset range (8-12N), the PLC controller immediately adjusts the speed of the winding motor 44 and adjusts the output pressure of the pressing cylinder 51 through the proportional valve to ensure that the tensile strain rate of each layer of film material is always maintained in the range of 0.05%-0.08%.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0042] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0044] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high voltage button capacitor winding and pressing integrated forming machine, characterized in that: include: A cabinet (1), used to support the overall structure; A film material conveying assembly is arranged on the cabinet (1), comprising a film material conveying frame (21), a reinforcing guide rod (22), a conveying drum (23) and a bearing (24), and is used for continuously conveying positive and negative electrode foils and diaphragm materials; A tension control component, comprising a film material support plate (31), a support column (32), a tension frame (33), a mounting frame (34) and a tension detector (35), for real-time detection and adjustment of winding tension; A winding and pressing assembly comprises a winding and pressing frame (4), a winding motor (44), a winding main pulley (45), a winding auxiliary pulley (46), a synchronous leather strip (47), and a winding main shaft (48), and is used to wind the film material into a core body; A pressing actuator assembly, comprising a pressing roller (49), a pressing cylinder (51), a pressing seat (52), a spring (53) and a pressing seat (54), is arranged on the winding pressing frame (4) and is used to press the wound core body in real time; The winding and pressing assembly and the pressing execution assembly are integrated in the same workstation, and the dynamic matching of the winding tension and the pressing force is achieved through the linkage control of the pressing cylinder (51) and the winding motor (44), thereby completing the integrated winding and pressing molding.

2. The high voltage button capacitor winding and pressing integrated forming machine according to claim 1, characterized in that: The winding and pressing frame (4) is provided with a groove (41), and the pressing execution component is installed in the groove (41).

3. The high voltage button capacitor winding and pressing integrated forming machine according to claim 1, characterized in that: The tension detector (35) is connected to the winding motor (44) by signal, and dynamically adjusts the winding speed and the pressure output of the pressing cylinder (51) by real-time feedback of film material tension data.

4. The high voltage button capacitor winding and pressing integrated forming machine according to claim 1, characterized in that: The winding and pressing frame (4) is symmetrically arranged with winding and pressing reinforcement rods (42) and winding and pressing reinforcement bottom beams (43) to enhance structural stability during the winding process and reduce core body deviation.

5. The high voltage button capacitor winding and pressing integrated forming machine according to claim 4, characterized in that: The synchronous belt (47) is connected to the winding main pulley (45) and the winding secondary pulley (46), driven to rotate by the winding main shaft (48), and cooperates with the pressing roller (49) to achieve synchronous execution of the winding and pressing actions.

6. The high voltage button capacitor winding and pressing integrated forming machine according to claim 1, characterized in that: A plurality of groups of springs (53) are provided between the pressing seat (54) and the pressing seat (52) for buffering the pressing impact and evenly distributing the pressing force to ensure the densification of the end surface of the core body. The pressing seat (54), the pressing seat (52) and the groove (41) are slidably connected.

7. The high voltage button capacitor winding and pressing integrated forming machine according to claim 1, characterized in that: The surface of the pressing roller (49) is provided with alignment patterns, which cooperate with the winding main shaft (48) to avoid misalignment between film material layers.

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