Method for packaging plastic film on capacitor and capacitor plastic film packaging equipment

Abstract

The embodiment of the invention provides a method for packaging a plastic film on a capacitor and capacitor plastic film packaging equipment, and the method comprises the steps: receiving a first signal, enabling a first clamping jaw assembly at a first initial position to contract, and enabling a first clamping jaw, a second clamping jaw and a third clamping jaw to respectively clamp the capacitors at a first station, a second station and a third station. Wherein the capacitor of the third station is adjusted to the preset polarity orientation. Then the second clamping jaw assembly and the third clamping jaw assembly are controlled to open and return to the initial positions; the first clamping jaw assembly is controlled to move to a first designated position, so that the capacitor at each station is driven to the corresponding next station; the second clamping jaw assembly, the third clamping jaw assembly and the fourth clamping jaw assembly are controlled to contract synchronously to clamp the capacitors at the corresponding stations respectively; and then the first clamping jaw assembly is controlled to open and return to the first initial position. According to the scheme, ordered transmission of the capacitors is achieved through cooperation of multiple assemblies, the preposition positions of the capacitors do not need to be strictly limited, the alignment precision of plastic film polarity identification and capacitor polarity is improved through the preset polarity orientation, and the requirements for efficient and high-precision automatic production are met.

Description

Technical Field

[0001] This invention relates to the field of capacitor manufacturing technology, specifically to a method for encapsulating a plastic film onto a capacitor and equipment for encapsulating a capacitor with a plastic film. Background Technology

[0002] In capacitor manufacturing, to achieve insulation protection and information labeling, a plastic film with specific markings needs to be affixed to the capacitor casing, and these markings must precisely correspond to the positive and negative terminals of the capacitor. Currently, because the relative positions of the markings on the plastic film and the positive and negative terminals are difficult to control precisely, automatic alignment is challenging. Therefore, the plastic film is still manually affixed to the capacitor. This not only results in low production efficiency but also easily leads to insufficient alignment accuracy due to operational variations, affecting product quality stability.

[0003] To improve efficiency, some scenarios have attempted to use automated equipment for packaging. However, existing equipment typically requires capacitors to maintain a uniform position before entering the packaging station, achieving alignment through fixed mechanical positioning structures. This requirement imposes significant limitations on capacitor processing at the pre-packaging station, reducing production efficiency and increasing equipment costs. Therefore, how to achieve efficient and precise automated packaging of plastic film and capacitors while reducing limitations on their pre-packaging position has become a pressing technical problem to be solved. Summary of the Invention

[0004] This invention provides a method and related packaging equipment for encapsulating a plastic film onto a capacitor, which can achieve precise alignment between the markings on the plastic film and the positive and negative terminals of the capacitor, and does not require strict restrictions on the position of the capacitor in the pre-processing station, thus meeting the needs of efficient, low-cost, and automated production of capacitor packaging.

[0005] In a first aspect, embodiments of this application provide a method for encapsulating a plastic film onto a capacitor, comprising the following steps: upon receiving a first signal, triggering a first gripper assembly located at a first initial position to retract, thereby causing the first, second, and third grippers of the first gripper assembly to respectively clamp the capacitor located at the first, second, and third workstations; the first signal is generated when the imaging module completes imaging of the top cover of the capacitor located at the second workstation clamped by the second gripper assembly, the third gripper assembly adjusts the capacitor located at the third workstation clamped by the second gripper assembly to a preset polarity orientation through a rotation operation, and the fourth gripper assembly completes a flipping operation, returns to the fourth initial position, and resumes its open state, and the first gripper assembly is located at the first initial position; the preset polarity orientation refers to the specific spatial orientation of the positive and negative terminals of the first capacitor at the third workstation after the rotation operation, which allows the capacitor to be encapsulated in a specific position. After the first capacitor undergoes subsequent encapsulation processes and is encapsulated in a plastic film, the polarity markings on the plastic film match the positive and negative terminals of the first capacitor. The first capacitor is any capacitor that will undergo plastic film encapsulation and whose polarity markings can be identified based on an image taken of its top cover. The second gripper assembly is controlled to open and return to a second initial position. The third gripper assembly is controlled to open and return to a third initial position. The first gripper assembly is controlled to move to a first designated position, thereby causing the capacitors located at the first, second, and third workstations to be moved to the second, third, and fourth workstations, respectively. The second, third, and fourth gripper assemblies are controlled to retract synchronously, thereby clamping the capacitors located at the second, third, and fourth workstations, respectively. The first gripper assembly is controlled to open and then returned to the first initial position.

[0006] This solution, through the design of coordinated action logic between the first, second, third, and fourth gripper components (such as multi-condition triggering of the first signal, and the orderly opening / contraction / movement / reset of the gripper components), achieves automated transfer and flow of capacitors at the first, second, and third stations. The first signal must satisfy the critical condition that "the third gripper component adjusts the capacitor at the third station to the preset polarity orientation through rotation," ensuring that the capacitor's polarity is accurately calibrated before entering the next process. This lays the foundation for precise alignment of the plastic film and the capacitor's positive and negative terminals from the source, effectively improving packaging accuracy. This solution solves the problems of poor coordination in multi-station capacitor transfer, easy action conflicts, and difficulty in ensuring polarity consistency in existing automated equipment, while also reducing the positional restrictions on the capacitor pre-processing stations. Furthermore, the synchronous operation mode of the multi-gripper components significantly improves the flow efficiency of capacitors between stations, building an orderly and efficient operational foundation for subsequent precise packaging.

[0007] In conjunction with the first aspect, in a first possible implementation of the first aspect, after the first gripper assembly returns to the first initial position, the method further includes: triggering the imaging module to capture an image of the top cover of the second capacitor currently located at the second workstation, obtaining a first image; generating a rotation command corresponding to the second capacitor based on the first image and the preset polarity orientation; the rotation command is used to trigger the third gripper assembly to rotate the second capacitor to the preset polarity orientation after the second capacitor is moved to the third workstation and clamped by the third gripper assembly; and controlling the third gripper assembly to rotate based on the rotation command corresponding to the third capacitor currently located at the third workstation, so as to rotate the third capacitor to the preset polarity orientation. The system presets the polarity orientation; after controlling the fourth gripper assembly to perform a flipping operation, it controls the lifting motor to drive the fourth gripper assembly, carrying the flipped capacitor, downwards, so that the fourth capacitor is embedded in the hole of the empty placement platform on the turntable, the hole corresponding to the capacitor electrode; it controls the fourth gripper assembly to open, and controls the lifting motor to drive the fourth gripper assembly to rise, and then controls the fourth gripper assembly to flip back to the fourth initial position; when any placement platform on the turntable with the capacitor rotates to the plastic film application station, the packaging structure is triggered to sequentially perform the feeding, curling, and cutting operations, pasting the plastic film onto the fifth capacitor currently located at the plastic film application station, so that the positive and negative terminals of the fifth capacitor with the plastic film pasted match the polarity markings on the plastic film.

[0008] The above solution further describes the closed-loop control logic from "the imaging module acquiring an image of the top of the capacitor and generating a rotation command" to "the third gripper assembly rotating the capacitor to the preset polarity position according to the command," achieving dynamic and precise adjustment of the capacitor's polarity position and solving the polarity alignment problem caused by initial position deviations of different capacitors. Simultaneously, through the design of "the fourth gripper assembly flipping the capacitor, and then the lifting motor precisely moving it downwards to embed the capacitor into the corresponding hole on the turntable," combined with the matching relationship between the hole position and the capacitor electrodes, the positioning accuracy of the capacitor on the turntable is ensured, avoiding positional offset during subsequent packaging. Furthermore, the linkage control between the packaging structure and the turntable operation realizes automated continuous operation of plastic film feeding, rolling, and cutting, ensuring precise matching between the plastic film polarity markings and the positive and negative terminals of the capacitor. This solution effectively solves the problems of low accuracy in manual pasting and the overly strict requirements of traditional equipment on the initial position of the capacitor, improving packaging efficiency while minimizing alignment errors, resulting in more stable product quality.

[0009] In conjunction with the first aspect, in a second possible implementation of the first aspect, when the first capacitor is a bolt-type electrolytic capacitor, the polarity marking includes: a positive symbol "+" and a negative symbol "-" provided on the top cover plate; when the first capacitor is a solder aluminum electrolytic capacitor, the polarity marking includes: a negative terminal provided on the top cover plate with an embossed marking, thereby identifying the negative terminal and then identifying the positive terminal.

[0010] The above solution describes the polarity marking characteristics of different types of capacitors (bolt-type electrolytic capacitors and soldered aluminum electrolytic capacitors), providing specific and actionable judgment criteria for image recognition in the imaging module. For bolt-type electrolytic capacitors, the positive and negative terminals can be directly identified by the "+" and "-" symbols on the top cover; for soldered aluminum electrolytic capacitors, the positive and negative terminals can be indirectly determined by the embossed markings on the negative terminal. This solution solves the problem of insufficient universality of existing equipment for polarity identification of different types of capacitors, requiring the development of separate identification algorithms for specific capacitors. It enables the same packaging system to be compatible with the polarity identification needs of various capacitors without additional adjustments to hardware or software logic, reducing equipment adaptation costs and operational complexity, and improving the applicability and production flexibility of the equipment.

[0011] In conjunction with the first aspect, in a third possible implementation of the first aspect, the shooting module includes a lens located above the second workstation, the lens being oriented toward the second workstation.

[0012] The above solution positions the camera module's lens above and towards the second workstation, ensuring accurate image capture of the capacitor's top cover (especially the polarity marking area). This solution resolves the issue of blurred or misjudged polarity markings caused by shooting angle deviations in existing equipment, improving image clarity and accuracy. It provides reliable raw data for subsequent rotation command generation, indirectly guaranteeing the precision of capacitor polarity adjustment and reducing alignment errors caused by image blur.

[0013] In conjunction with the first aspect, in a fourth possible implementation of the first aspect, after the control lifting motor drives the fourth gripper assembly to move downward with the flipped capacitor, the method further includes: if the placement platform is provided with an additional adsorption structure, controlling the activation of the adsorption function to fix the capacitor.

[0014] The above solution, by "setting an adsorption structure on the placement platform and using negative pressure adsorption to fix the capacitor," further enhances the stability of the capacitor after it is placed on the turntable by the fourth gripper assembly. This technical feature solves the problem in existing equipment where capacitors are prone to displacement due to vibration, centrifugal force, and other factors during turntable operation. It ensures that the capacitor maintains precise positioning when entering the plastic film application station, avoiding misalignment between the plastic film and the positive and negative terminals caused by capacitor displacement, and improving the stability of the packaging quality.

[0015] In conjunction with the first aspect, in a fifth possible implementation of the first aspect, controlling the third gripper assembly to rotate based on a rotation command corresponding to the third capacitor currently located at the third work station, so as to drive the third capacitor to rotate to the preset polarity position, includes: driving a rotary motor to rotate the third gripper assembly based on a rotation command corresponding to the third capacitor currently located at the third work station, so as to drive the third capacitor to rotate to the preset polarity position.

[0016] The above solution, through a design where a rotary motor drives the third gripper assembly to rotate, achieves precise electric adjustment of the capacitor polarity (the adjustment accuracy is guaranteed by the motor control logic). This solution solves the problems of insufficient polarity alignment accuracy and poor consistency caused by manual adjustment or mechanical positioning. Furthermore, by matching the rotation angle with the rotation command, the solution ensures the controllability of the adjustment process, unifying the polarity of different capacitors to a preset standard. This provides a prerequisite for precise alignment during subsequent plastic film encapsulation and improves the consistency of product quality.

[0017] In conjunction with the first aspect, in the sixth possible implementation of the first aspect, the triggering encapsulation structure sequentially performs the operations of feeding, rolling, and cutting to attach the plastic film to the fifth capacitor currently located at the plastic film attaching station, so that the positive and negative terminals of the fifth capacitor with the plastic film attached match the polarity markings on the plastic film. This includes: controlling the feeding tray to release a flat plastic film, controlling the rolling device to roll the plastic film into a sleeve shape and fit it onto the outside of the fifth capacitor, and then controlling the cutter to perform a cutting action after the plastic film has been fitted to cover a preset length of the fifth capacitor. The cutting position is the interval area on the plastic film located between two adjacent capacitors.

[0018] The above solution clarifies the operational logic of the encapsulation structure (the feeding tray releases the plastic film – the rolling device rolls the flat plastic film into a sleeve – the cutter cuts it at a preset length and interval), achieving automated and precise control of the plastic film from feeding to encapsulation. This technical feature solves the problems of loose plastic film fitting and cutting position deviation in existing equipment. The "sleeve-shaped fitting" ensures the fit between the plastic film and the capacitor shell, while the "preset length + interval cutting" avoids mutual interference between the plastic films of adjacent capacitors, improving the standardization and aesthetics of the encapsulation.

[0019] In conjunction with the first aspect, in the seventh possible implementation of the first aspect, the method further includes: when the turntable moves the packaged capacitor to the unloading station, controlling the fifth gripper assembly to remove the packaged capacitor from the turntable and move it to the finished product storage area.

[0020] The above solution, through the design of "the fifth gripper assembly moving the encapsulated capacitor in the unloading process," achieves automated unloading of the encapsulated finished product. This solution solves the problems of low efficiency and easy contamination of finished products caused by manual unloading in existing production processes. It eliminates the need for manual intervention in the process of moving the capacitor from the completion of encapsulation to the storage area, which not only improves production continuity but also reduces the risk of product damage or contamination caused by human contact, further improving the automated production process.

[0021] In conjunction with the first aspect, in an eighth possible implementation of the first aspect, the finished product storage area includes: a finished product conveyor belt for carrying and transporting the packaged capacitors.

[0022] The above solution, through the design of a "finished product storage area including a conveyor belt that carries and transports packaged capacitors," achieves continuous transport of packaged finished products. This solution solves the problem of finished products piling up after collection and being difficult to connect to subsequent processes, allowing packaged capacitors to flow to the next processing stage (such as testing and packaging) via conveyor belt. This improves the continuity and automation of the entire production line and reduces the time cost of intermediate transfers.

[0023] Secondly, embodiments of this application provide a capacitor plastic film encapsulation device, including: a capacitor conveyor belt, a first gripper assembly, a second gripper assembly, a third gripper assembly, a fourth gripper assembly, a fifth gripper assembly, a camera module, a rotation adjustment structure, a flipping structure, a lifting motor, a turntable, an encapsulation structure, and a controller; the capacitor conveyor belt is used to transport capacitors with their top covers facing upwards to a first station; the first gripper assembly has a first gripper, a second gripper, and a third gripper, used to transfer capacitors between stations; the second gripper assembly, the third gripper assembly, and the fourth gripper assembly are respectively used to clamp the capacitors at the corresponding stations; the... The fifth gripper assembly is used to remove the packaged capacitor from the turntable and move it to the finished product storage area; the imaging module is located above the second workstation and includes a lens facing the second workstation for photographing the top cover of the capacitor located at the second workstation; the rotation adjustment structure includes a rotary motor, which cooperates with the third gripper assembly to drive the third gripper assembly and its clamped capacitor to rotate to a preset polarity position; the flipping structure cooperates with the fourth gripper assembly to drive the fourth gripper assembly to flip its clamped capacitor 180°; the lifting motor is used to drive the fourth gripper assembly with the flipped capacitor... The capacitor moves downward, embedding itself into the hole of the empty placement platform of the turntable, the hole corresponding to the capacitor electrode; then, the controller controls the fourth gripper assembly to open; then, the lifting motor is also used to drive the fourth gripper assembly to rise; the controller is also used to control the fourth gripper assembly to flip back to the fourth initial position; the turntable is provided with at least one placement platform for driving the capacitor placed into any of the placement platforms by the fourth gripper assembly to the plastic film application station or the unloading station; the packaging structure includes: a feeding tray, a winding device, and a cutter, the feeding tray is used to release the flat plastic film, and the winding device is used to wind the plastic film. The sleeve is cylindrical and guided to be fitted onto the outside of the capacitor located at the plastic film application station; the cutter is used to cut the plastic film after it has been fitted to a preset length on the capacitor located at the plastic film application station; the controller is used to control the conveyor belt for the capacitor to be packaged, the first gripper assembly, the second gripper assembly, the third gripper assembly, the fourth gripper assembly, the fifth gripper assembly, the shooting module, the rotation adjustment structure, the flipping structure, the lifting motor, the turntable, and the packaging structure to work together in a preset sequence to achieve the method of packaging plastic film onto the capacitor as described in the first aspect or any possible implementation of the first aspect.

[0024] The above solution integrates components such as the capacitor conveyor belt, multi-claw assembly, imaging module, rotary adjustment structure, lifting motor, turntable, packaging structure, and controller, and clarifies the collaborative control logic of each component, forming a complete automated capacitor plastic film packaging equipment. This solution solves the problems of low integration, poor coordination of components, and numerous restrictions on the front-end workstations in existing equipment. Through unified scheduling by the controller, it achieves fully automated operation from capacitor loading to finished product unloading. This not only reduces restrictions on the front-end processing position of capacitors but also ensures packaging accuracy and efficiency through precise linkage of components. Simultaneously, it reduces manual intervention, lowers equipment operating costs, and is suitable for large-scale production needs.

[0025] Thirdly, embodiments of this application provide a computer storage medium storing a computer program thereon, which, when executed by a processor, implements the method of encapsulating a plastic film onto a capacitor as described in the first aspect or any possible implementation of the first aspect.

[0026] Fourthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the method of encapsulating a plastic film onto a capacitor as described in the first aspect or any possible implementation of the first aspect.

[0027] It is understood that the technical effects obtained by the computer storage medium described in the third aspect and the computer program product described in the fourth aspect are similar to the technical effects obtained by the corresponding technical means in the method of encapsulating a plastic film onto a capacitor described in the first aspect, and will not be repeated here. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1A This is a schematic diagram of an application scenario of one embodiment of this application; Figure 1B This is a flowchart illustrating the method of encapsulating a plastic film onto a capacitor according to Embodiment 1 of this application; Figure 2 This is a flowchart illustrating the method of encapsulating a plastic film onto a capacitor according to Embodiment 2 of this application; Figure 3 This is a schematic diagram of the structure of the first gripper assembly in one embodiment of this application; Figure 4This is a schematic diagram of the capacitors after being packaged in an embodiment of this application; Figure 5A This is a schematic diagram of the structure of the placement platform in one embodiment of this application. Figure 5B yes Figure 5A The diagram shows the clamping components in the placement platform when they are open. Figure 5C Is adopted Figure 5B A schematic diagram showing the placement platform on which the plastic sleeve is placed; Figure 6 This is a partial scene diagram of a plastic film application station in one embodiment of this application. Detailed Implementation

[0030] The terminology used in the following embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this application refers to any or all possible combinations including one or more of the listed items.

[0031] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating 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, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0032] In existing technologies for capacitor plastic film encapsulation, manual pasting is not only inefficient but also susceptible to variations in operator experience, making it difficult to guarantee the alignment accuracy between the plastic film polarity markings and the capacitor's positive and negative terminals. This often results in significant deviations and a high product defect rate. Existing automated equipment often employs fixed mechanical positioning structures, requiring capacitors to maintain a uniform initial posture before entering the encapsulation station. This not only limits the flexibility of pre-processing steps but also, due to the lack of dynamic adjustment capabilities, easily leads to encapsulation misalignment even with slight positional deviations in the capacitors. This is because traditional automation solutions lack dynamic control logic for multi-station collaboration and lack precise identification and real-time adjustment mechanisms for capacitor polarity, resulting in poor equipment adaptability and low fault tolerance.

[0033] The method and equipment for encapsulating plastic film onto capacitors provided in this application construct a fully automated solution by integrating the collaborative action logic of multi-claw components, image recognition-based dynamic polarity adjustment, precise positioning through flipping and placement, and linkage control of the encapsulation structure. This solution overcomes the stringent limitations on the initial position of the capacitor. Through closed-loop control of "identification-adjustment-positioning-encapsulation," it ensures the alignment accuracy between the plastic film and the positive and negative terminals of the capacitor, improves throughput efficiency through synchronous operation of multiple components, and is compatible with the encapsulation requirements of various capacitor types. It fundamentally solves the problems of difficulty in balancing efficiency and accuracy, and poor equipment adaptability in existing technologies.

[0034] This invention provides a method and apparatus for encapsulating a plastic film onto a capacitor, which overcomes the shortcomings of existing technologies such as low encapsulation efficiency, insufficient alignment accuracy, and poor equipment compatibility. The method and apparatus for encapsulating a plastic film onto a capacitor according to embodiments of this invention are described below with reference to the accompanying drawings.

[0035] Example 1 The following is combined with Figure 1A and Figure 1B This application will describe an embodiment of a method for encapsulating a plastic film onto a capacitor, which is applied to a controller of a capacitor encapsulation device. The method includes steps S101 to S105.

[0036] S101. Upon receiving the first signal, the first gripper assembly located at the first initial position is triggered to retract, thereby causing the first gripper, the second gripper, and the third gripper of the first gripper assembly to clamp the capacitors located at the first station, the second station, and the third station, respectively.

[0037] In some possible implementations, the structure of the first gripper assembly is as follows: Figure 3 As shown, the worktable 311 is connected to the conveyor belt 330, and the first gripper assembly 310 includes a first gripper 311, a second gripper 312 and a third gripper 313.

[0038] The first signal is a "start signal" generated only after several conditions are met simultaneously. Specifically, these conditions include: the imaging module (e.g., a high-definition camera positioned directly above the second workstation) has completed photographing the top cover of the capacitor located at the second workstation, which is held by the second gripper assembly (e.g., capturing the "+" and "-" symbols on the bolt-type capacitor); the third gripper assembly has rotated the capacitor at the third workstation it is holding to a preset polarity orientation (e.g., the positive and negative terminals of the capacitor are horizontal with the positive terminal on the right, serving as the basis for aligning the polarity markings on the plastic film later); the fourth gripper assembly has completed its previous flipping operation, returned to its initial position, and opened its grippers; simultaneously, the first gripper assembly itself is also in its initial, ready-to-work position. Only when all these conditions are met will the first signal be triggered, ensuring the accuracy of subsequent actions.

[0039] In the process of encapsulating a plastic film onto a capacitor in this application, the preset polarity orientation is a core element to ensure accurate matching between the capacitor's polarity markings and the polarity of the encapsulated plastic film. When the first capacitor (the capacitor to be encapsulated and whose polarity can be identified by the image of its top cover) moves to the second station, the imaging module captures an image of its top cover. After the processor identifies the orientation of the positive and negative polarity markings, it generates a rotation command based on the preset polarity orientation. The third gripper assembly at the third station receives the command and rotates the first capacitor to that specific spatial orientation. This orientation has been verified through extensive process testing and ensures that in subsequent encapsulation processes, after the plastic film is fitted, cut, and compressed, the polarity markings on the film precisely correspond to the positive and negative polarities of the capacitor.

[0040] The capacitor mentioned in this embodiment can be... Figure 4 The cylindrical aluminum electrolytic capacitor shown has a black epoxy resin encapsulation on its casing, and a polarity marking on the top cover. During production, this type of capacitor undergoes heat-shrink packaging with plastic film (a cylindrical plastic film is placed around the capacitor and then cut; heat shrinking can be done using methods commonly used in the art, which are not described in detail in this application). The film surface is printed with a polarity marking, which must precisely correspond to the polarity marking on the top cover. It should be noted that the solution provided by this invention is also applicable to other types of capacitors whose polarity can be distinguished by the top cover image and which use plastic packaging with printed polarity markings around them. That is, the preset polarity orientation adjustment scheme proposed in this invention is applicable to capacitors that meet the following characteristics: after acquiring an image of the top cover through a second-station imaging module and identifying the polarity characteristics, the capacitor is rotated to a preset orientation by controlling a third-station module, ensuring that the polarity of the subsequently packaged plastic film marking strictly matches the polarity of the capacitor itself, effectively avoiding installation accidents caused by misaligned packaging markings.

[0041] S102. Control the second gripper assembly to open and return to the second initial position.

[0042] After capturing a top image of the current capacitor, the second gripper assembly opens to release the captured capacitor, allowing it to be transported to the next station by the conveyor mechanism. Simultaneously, the second gripper assembly retracts along a preset trajectory to the mechanical origin (i.e., the second initial position) of the second station, ensuring that when the first gripper assembly subsequently feeds in a new capacitor, the second gripper can accurately clamp it in a standardized posture, avoiding capacitor positioning errors or gripper collisions due to positional deviations.

[0043] S103. Control the third gripper assembly to open and return to the third initial position.

[0044] After the third station completes the polarity rotation adjustment of the capacitor, the third gripper assembly opens to release the capacitor with its polarity adjusted, allowing it to be conveyed to the subsequent packaging process by the transport mechanism. Simultaneously, the third gripper assembly retracts along a preset trajectory to the mechanical origin (i.e., the third initial position) of the third station, ensuring that when receiving new capacitors processed by the second station, the third gripper can accurately clamp them in a standardized posture, avoiding capacitor positioning errors or gripper collisions caused by positional deviations.

[0045] S104. Control the first gripper assembly to move to the first designated position, thereby moving the capacitors located at the first, second, and third workstations to the second, third, and fourth workstations respectively. This step is the "core" of the capacitor transfer between workstations. Imagine it as a transport link on a factory assembly line: the first gripper assembly acts like a "porter," moving the three capacitors synchronously, sending the new capacitor from the first workstation to the second workstation (waiting for polarity marking), sending the capacitor marked at the second workstation to the third workstation (waiting for rotation and orientation adjustment), and sending the capacitor with its orientation adjusted at the third workstation to the fourth workstation (waiting for flipping and packaging). This "one-step" transfer method is much more efficient than handling them one by one and ensures the positional accuracy of the capacitors between workstations.

[0046] S105. Control the second, third, and fourth gripper assemblies to retract synchronously, thereby clamping the capacitors located at the second, third, and fourth workstations respectively. After the first gripper assembly delivers the capacitor to the new workstation, the second, third, and fourth gripper assemblies act as if "taking over," simultaneously clamping the capacitors at their respective workstations to ensure that the capacitors do not shift in subsequent processes. For example, after the second gripper clamps the newly arrived capacitor, the imaging module can begin photographing its polarity markings; after the third gripper clamps the capacitor, it can perform rotational adjustments based on the previous photographing results; after the fourth gripper clamps the capacitor, it prepares for the next flipping operation. This "synchronous clamping" design avoids capacitor wobbling or positional deviation caused by the sequence of actions.

[0047] S106. Control the first gripper assembly to open, and then control the first gripper assembly to return to the first initial position.

[0048] After the capacitor transfer is completed and other gripper assemblies take over, the first gripper assembly releases the capacitor and returns to its initial position, awaiting the trigger of the next first signal to begin a new transfer cycle. This process is like a "reset" button, restoring the equipment to its initial state and ensuring that each transfer action can be stably repeated, thus guaranteeing continuous production.

[0049] The beneficial effects of this embodiment include: by designing the collaborative action logic of the first gripper assembly and other gripper assemblies, and using the first signal as a "master switch" triggered by multiple conditions, it ensures that the capacitor has completed the necessary polarity detection or adjustment preparation before transfer, laying the foundation for the polarity alignment of the subsequent plastic film encapsulation; at the same time, the orderly opening, contraction, movement and reset of each gripper assembly avoids action conflicts and realizes the efficient flow of the capacitor between multiple workstations, which not only reduces the restrictions on the pre-processing position of the capacitor, but also improves the automation and accuracy of the pre-encapsulation process, providing a reliable guarantee for the efficient and accurate execution of the entire capacitor plastic film encapsulation process.

[0050] Example 2 S201. Upon receiving the first signal, the first gripper assembly located at the first initial position is triggered to retract, thereby causing the first gripper, the second gripper, and the third gripper of the first gripper assembly to clamp the capacitors located at the first station, the second station, and the third station, respectively.

[0051] The first signal is generated when the shooting module completes the shooting of the top cover of the capacitor located in the second station, which is clamped by the second gripper assembly; the third gripper assembly adjusts the capacitor located in the third station, which is clamped by the third gripper assembly, to the preset polarity position through a rotation operation; the fourth gripper assembly completes the flipping operation, returns to the fourth initial position and resumes the open state; and the first gripper assembly is located in the first initial position.

[0052] The preset polarity orientation refers to the specific spatial orientation of the positive and negative terminals of the first capacitor at the third station after rotation. This orientation ensures that the polarity markings on the plastic film match the positive and negative terminals of the first capacitor after subsequent encapsulation processes and plastic film encapsulation. The first capacitor is any capacitor that will undergo plastic film encapsulation and whose polarity markings can be identified from the image captured of its top cover. For example, after the imaging module has captured the top image of the capacitor at the second station, the third gripper assembly rotates the capacitor at the third station to the preset polarity orientation. The fourth gripper assembly flips the capacitor and returns to its initial open state. Meanwhile, when the first gripper assembly is in its initial position, a first signal is generated, and the first gripper assembly retracts to clamp the capacitors at all three stations. In this embodiment, the triggering of the first signal requires the fulfillment of several preconditions, specifically corresponding to the following scenarios: When the imaging module of the second station completes the imaging of the top cover of the capacitor held by the second gripper assembly (for example, successfully acquiring an image of the negative electrode with embossed markings on the top cover of the aluminum electrolytic capacitor with solder tabs, thereby clarifying the positive and negative electrode orientations), the rotary motor of the third station drives the third gripper assembly to rotate the capacitor it holds to a preset polarity orientation (such as the standard orientation with the positive electrode horizontal to the right), the fourth gripper assembly completes the flipping and placement operation of the previous capacitor, returns to the fourth initial position and resumes its open state, and at the same time, when the first gripper assembly is in the first initial position waiting for transfer, the controller integrates all the above status signals, triggers the generation of the first signal, and then initiates the retraction action of the first gripper assembly, so that the first, second, and third grippers respectively hold the capacitors of the first, second, and third stations. This multi-condition triggering mechanism, implemented through the status detection of each component and the logical judgment of the controller, ensures that the operations of each station have been completed and the equipment is in a ready state before the capacitor is transferred, providing a reliable guarantee for the orderly flow and precise processing between subsequent stations. In some possible implementations, if the first capacitor is a bolt-type electrolytic capacitor, its polarity markings include a positive symbol "+" and a negative symbol "-" on the top cover; if it is... Figure 4 The aluminum electrolytic capacitor shown has polarity markings including a negative terminal 401 with embossed markings on the top cover, which in turn identifies the positive terminal 402. After encapsulation with plastic film 403, the negative terminal marking 404 on the plastic film corresponds to the negative terminal 404 on the top cover. S202. Control the second gripper assembly to open and return to the second initial position.

[0053] After capturing the top image of the current capacitor, the second gripper assembly opens to release the photographed capacitor, allowing it to be transported to the next station by the conveyor mechanism. Simultaneously, the second gripper assembly retracts along a preset trajectory to the mechanical origin (i.e., the second initial position) of the second station, ensuring that when the first gripper assembly delivers a new capacitor, the second gripper can accurately hold it in a standardized posture, avoiding capacitor positioning errors or gripper collisions due to positional deviations. For example, after releasing the photographed capacitor, the second gripper assembly returns to the second initial position, awaiting the arrival of a new capacitor to be photographed by the first gripper assembly. In some possible implementations, the imaging module includes a lens located above the second workstation, with the lens facing the second workstation. This allows for accurate imaging of the capacitor's top cover, ensuring a clear polarity marking image and providing a reliable basis for subsequent polarity identification and rotation command generation. S203. Control the third gripper assembly to open and return to the third initial position.

[0054] After the third station completes the polarity adjustment of the capacitor, the third gripper assembly opens to release the capacitor with its polarity adjusted, allowing it to be conveyed to the subsequent packaging process by the transport mechanism. Simultaneously, the third gripper assembly returns along a preset trajectory to the mechanical origin (i.e., the third initial position) of the third station, ensuring that when receiving new capacitors processed by the second station, the third gripper can accurately clamp them in a standardized posture, avoiding capacitor positioning errors or gripper collisions due to positional deviations. For example, the third gripper assembly rotates the capacitor to the preset polarity orientation, releases it, and returns to the third initial position, ready to clamp new capacitors conveyed from the second station. S204. Control the first gripper assembly to move to the first designated position, so that the capacitors located at the first station, the second station, and the third station are respectively driven to the second station, the third station, and the fourth station.

[0055] The first gripper assembly acts like a "transporter," moving synchronously with the three capacitors. It moves the new capacitor from the first station to the second station (awaiting polarity marking), the capacitor marked at the second station to the third station (awaiting rotation and orientation adjustment), and the capacitor with its orientation adjusted at the third station to the fourth station (awaiting flipping and packaging). This "one-step" transfer method is far more efficient than handling capacitors one by one and ensures the positional accuracy of the capacitors between stations. Assuming there is a new capacitor A at the first station, a marked capacitor B at the second station, and an oriented capacitor C at the third station, after the first gripper assembly moves, capacitor A goes to the second station, capacitor B goes to the third station, and capacitor C goes to the fourth station. S205. Control the second gripper assembly, the third gripper assembly, and the fourth gripper assembly to retract synchronously, thereby clamping the capacitors located at the second, third, and fourth workstations respectively.

[0056] After the first gripper assembly delivers the capacitor to its new station, the second, third, and fourth gripper assemblies simultaneously "take over," clamping the capacitors at their respective stations to ensure they don't shift during subsequent processes. For example, after the second gripper clamps the newly arrived capacitor A, the imaging module can begin photographing its polarity markings; after the third gripper clamps capacitor B, it can rotate and adjust it based on the previous photographic results; and after the fourth gripper clamps capacitor C, it prepares for the next flipping operation. This "synchronous clamping" design avoids capacitor wobbling or positional deviations caused by the sequence of actions. S206. Control the first gripper assembly to open, and then control the first gripper assembly to return to the first initial position.

[0057] After the capacitor transfer is completed and other gripper assemblies take over, the first gripper assembly releases the capacitors and returns to its initial position, awaiting the trigger of the next first signal to begin a new transfer cycle. This process is like a "reset" button, restoring the equipment to its initial state and ensuring that each transfer action can be stably repeated, providing a guarantee for continuous production. For example, after the first gripper assembly releases capacitors A, B, and C, it returns to its initial position, waiting to receive the first signal when all conditions are met next. S207. Trigger the shooting module to take a picture of the top cover of the second capacitor currently located at the second station and obtain the first image.

[0058] The imaging module can be started after the first gripper assembly returns to the first initial position. It can be understood that the imaging module can be started as long as the second gripper assembly grasps the second capacitor of the second station. The timing of the relevant steps can be optimized and adjusted as needed. Some have a clear sequence, while others can be processed synchronously. As long as there is no interference during operation, the steps in this embodiment and the order between the steps can be adjusted and optimized. The specific possible implementation methods will not be described in detail.

[0059] The imaging module captures an image of the top cover of the second capacitor located at the second workstation, obtaining a first image containing its polarity markings. For example, if the second capacitor has an embossed negative polarity marking on its top, the imaging module will capture an image clearly showing the polarity. S208. Based on the first image and the preset polarity orientation, generate a rotation command corresponding to the second capacitor. The rotation command is used to trigger the third gripper assembly to rotate the second capacitor to the preset polarity orientation after the second capacitor is moved to the third station and clamped by the third gripper assembly.

[0060] The processor analyzes the first image, identifies the current polarity of the second capacitor, compares it with the preset polarity, calculates the required rotation angle and direction, and generates a rotation command. For example, if the preset polarity requires the positive terminal to be horizontal to the right, and the first image shows the positive terminal of the second capacitor facing upwards, then the generated rotation command would be to rotate 90 degrees clockwise. S209. Based on the rotation command corresponding to the third capacitor currently located in the third station, control the third gripper assembly to rotate so as to drive the third capacitor to rotate to the preset polarity position.

[0061] Once the third capacitor is gripped by the third gripper assembly, the third gripper assembly rotates the third capacitor according to the previously generated rotation command corresponding to the third capacitor, causing its positive and negative terminals to reach the preset polarity positions. For example, if the rotation command for the third capacitor is a 45-degree counterclockwise rotation, the third gripper assembly will execute this action, rotating the third capacitor to the preset position. In some possible implementations, a rotary motor is driven to rotate the third gripper assembly based on a rotation command corresponding to the third capacitor currently located at the third station, thereby rotating the third capacitor to a preset polarity position. The rotary motor can provide precise power output, ensuring accurate rotation angle of the third capacitor and guaranteeing the accuracy of polarity adjustment. S210. After the fourth gripper assembly performs the flipping operation, the lifting motor is controlled to drive the fourth gripper assembly to move downward with the flipped capacitor, so that the fourth capacitor is embedded in the hole of the empty placement platform of the turntable, and the hole corresponds to the capacitor electrode.

[0062] The fourth gripper assembly first flips the clamped fourth capacitor to a suitable placement position. Then, the lifting motor operates, moving the fourth gripper assembly and the flipped fourth capacitor downwards to accurately embed the fourth capacitor into the hole on the empty placement platform of the turntable. The shape and position of the hole match the capacitor electrode to ensure stable placement of the capacitor. For example, after the fourth capacitor is flipped 180 degrees, the lifting motor lowers it, allowing the electrode to be inserted into the corresponding hole on the placement platform.

[0063] In some possible implementations, such as Figure 5A , Figure 5B and Figure 5C As shown, the placement stage includes a boss (with a groove for accommodating the top electrode of the capacitor) that matches the top of the capacitor, and grippers located around the boss. In some possible implementations, the placement platform also has a negative pressure adsorption structure, for example, adsorption ports can be set on the surface of the placement platform and around the protrusions. Figure 5A (The relevant structures are not shown in the drawing), which is conducive to adsorption such as Figure 5C The plastic film sleeve 501 shown is fitted over the capacitor.

[0064] In some possible implementations, after the lifting motor drives the fourth gripper assembly to move the flipped capacitor downwards, a negative pressure adsorption function is activated to control its adsorption action to fix the capacitor. This further enhances the stability of the capacitor on the placement platform and prevents the capacitor from shifting during subsequent turntable rotation. When the plastic film is subsequently adjusted to a cylindrical shape and placed around the capacitor, the negative pressure adsorption function helps to hold one end of the plastic sleeve, ensuring that the plastic film remains stably taut when the cutter cuts the other end, avoiding cutting deviation or burrs due to film loosening. This helps ensure that the cut plastic sleeve has a precise and consistent length and a neat and smooth end, laying a good foundation for the subsequent bonding and encapsulation of the plastic film and capacitor, reducing problems such as encapsulation misalignment or poor sealing caused by cutting defects, and further improving the overall encapsulation quality.

[0065] In some possible implementations, the negative pressure adsorption function is controlled by a solenoid valve and a controller working together: the controller sends a control signal based on the positioning status of the capacitor on the placement stage. When the fourth gripper assembly inserts the flipped capacitor into the hole on the placement stage, the controller triggers the solenoid valve to open the air path, creating a negative pressure inside the placement stage and adsorbing the capacitor. After the capacitor moves with the turntable to the plastic film application station and completes the encapsulation, the controller sends a signal again to close the air path with the solenoid valve, releasing the negative pressure state so that the fifth gripper assembly can smoothly remove the capacitor. For negative pressure control during plastic film cutting, the controller is also linked to the solenoid valve for execution: such as Figure 6 As shown, after the rolling devices 601 and 602 roll the flat plastic film into a cylindrical shape, the vertically movable device 603 drives the plastic cylinder downward. When the front end of the plastic film cylinder reaches the lower surface of the placement table, the controller triggers the corresponding solenoid valve to open, causing the adsorption mechanism to generate negative pressure to hold the front end of the plastic sleeve. After the cutter completes the cutting action, the solenoid valve closes the negative pressure. As the turntable moves, the placement table moves to the finishing station after subsequent heating and other processes. After the unloading station, the packaged finished product is transferred to the finished product storage area. This method of precisely controlling the airflow through solenoid valves offers fast response and high control accuracy, ensuring seamless integration of negative pressure adsorption with each process, and further enhancing the stability and reliability of the equipment. S211. Control the fourth gripper assembly to open, and control the lifting motor to drive the fourth gripper assembly to rise, and then control the fourth gripper assembly to flip back to the fourth initial position.

[0066] After the fourth capacitor is inserted into the hole on the electrode of the placement stage, the fourth gripper assembly opens to release the capacitor. The lifting motor then drives the fourth gripper assembly to rise upwards. Afterwards, the fourth gripper assembly flips back to its initial position, preparing for the next gripping and flipping operation. For example, after releasing the capacitor, the fourth gripper assembly rises to a certain height and then flips back to its initial state to wait for the next capacitor. S212. When any of the placement stages on the turntable where the capacitor is placed rotates to the plastic film application station, the packaging structure is triggered to sequentially perform the operations of feeding, rolling, and cutting, and the plastic film is pasted onto the fifth capacitor currently located at the plastic film application station, so that the positive and negative terminals of the fifth capacitor with the plastic film pasted on match the polarity markings on the plastic film.

[0067] like Figure 6As shown, as the turntable rotates, when a placement platform containing a capacitor reaches the plastic film application station, the encapsulation structure begins operation. First, the plastic film is released, then rolled into a cylindrical shape and wrapped around the fifth capacitor. Finally, the cutter 604 cuts the plastic film. To improve the adhesion, before the cylindrical plastic film is pulled downwards by the moving structure 603 and fitted onto the capacitor, it can pass through the heating module 604 for preliminary heating, giving it a certain degree of adhesion. After the cutter 604 cuts the plastic film, as the turntable moves, the capacitor with the plastic film applied can undergo further processing, such as heating, to ensure the plastic film adheres tightly to the capacitor casing, enhancing the encapsulation's strength. Simultaneously, heating cures the adhesive layer on the plastic film, ensuring the polarity markings remain clear and do not easily fall off, further improving the stability of the encapsulation quality. Due to the previous polarity adjustment, the polarity markings on the plastic film accurately correspond to the positive and negative terminals of the fifth capacitor. For example, when the turntable rotates the placement platform containing the fifth capacitor to the plastic film application station, the encapsulation structure affixes the plastic film with the correct polarity markings onto the fifth capacitor. In some possible implementations, a control tray releases a flat plastic film, a control winding device rolls the plastic film into a sleeve shape and fits it onto the outside of the fifth capacitor, and then a control cutter performs a cutting action after the plastic film has been fitted to cover a preset length of the fifth capacitor. The cutting position is the gap area on the plastic film between two adjacent capacitors. This ensures the standardization and consistency of the plastic film packaging. In some possible implementations, as the turntable moves the packaged capacitor to the unloading station, the fifth gripper assembly is controlled to remove the packaged capacitor from the turntable and move it to the finished product storage area. This achieves automatic unloading and storage of the packaged capacitors, improving the level of automation in production. In some possible implementations, the finished product storage area includes a finished product conveyor belt for carrying and transporting the packaged capacitors. The finished product conveyor belt can promptly transport the packaged capacitors to the next stage, avoiding accumulation at the unloading station and ensuring production continuity. The steps in this embodiment, including photographing the second capacitor, generating rotation commands, rotating the third capacitor, flipping and placing the capacitor using the fourth gripper assembly, and applying the plastic film to the encapsulation structure, further improve the entire process of capacitor plastic film encapsulation. Simultaneously, in some possible implementations, various features are introduced to adapt to different capacitor types, improve photographing accuracy, ensure rotation accuracy, enhance capacitor fixation, standardize encapsulation operations, and achieve automatic unloading and storage. This achieves automated and continuous operation from capacitor polarity identification and adjustment to final plastic film encapsulation and subsequent processing, ensuring precise matching between the polarity markings on the plastic film and the positive and negative terminals of the capacitor. This effectively avoids safety accidents caused by polarity misalignment, significantly improves encapsulation efficiency, accuracy, and the degree of automation in production, and provides a more reliable technical guarantee for large-scale capacitor production.

[0068] Example 3 This embodiment provides a capacitor plastic film encapsulation device, which can realize the method of encapsulating plastic film onto capacitors as described in the above method embodiment. The capacitor plastic film encapsulation device includes: a capacitor conveyor belt to be encapsulated, a first gripper assembly, a second gripper assembly, a third gripper assembly, a fourth gripper assembly, a fifth gripper assembly, a shooting module, a rotation adjustment structure, a flipping structure, a lifting motor, a turntable, an encapsulation structure, and a controller.

[0069] The main function of the capacitor conveyor belt is to orderly transport the capacitors to be packaged, with their top covers facing upwards, to the first station, serving as the material input for the entire packaging process. The capacitors can be cylindrical electrolytic capacitors, with their casings encapsulated in black epoxy resin and marked on the top cover to distinguish polarity; for example, they can be bolt-type electrolytic capacitors or soldered aluminum electrolytic capacitors, or other types, as long as the polarity can be identified through the image on the top cover, ensuring that subsequent stations continuously receive capacitors to be processed.

[0070] In some possible implementations, a limiting groove can be set on the conveyor belt of the capacitor to be packaged for initial positioning of the capacitor, ensuring that the capacitor enters the first station in a stable posture, so as to facilitate precise gripping by the first gripper assembly.

[0071] The first gripper assembly is equipped with a first gripper, a second gripper, and a third gripper. Its core function is to transfer capacitors between different workstations. Through synchronous contraction and movement, the new capacitors at the first workstation, the capacitors that have been photographed at the second workstation, and the capacitors whose polarity has been adjusted at the third workstation are transferred to the second, third, and fourth workstations, respectively. This achieves efficient "one-step" transfer of capacitors between different processing stages and ensures the positional accuracy of the capacitors between workstations.

[0072] The second, third, and fourth gripper assemblies are used to clamp the capacitor at their respective workstations (second, third, and fourth workstations), providing stable clamping and fixation for specific operations at each workstation (such as shooting, polarity rotation, and flipping). After completing the corresponding operation, each gripper assembly will open to release the capacitor and return to its initial position (second initial position, third initial position, and fourth initial position) along a preset trajectory, preparing for the next gripping and avoiding capacitor positioning errors or gripper collisions caused by positional deviations.

[0073] The function of the fifth gripper assembly is to remove the capacitor from the turntable's placement platform after the capacitor has been encapsulated in plastic film, and transfer it to the finished product storage area when the turntable moves the encapsulated capacitor to the unloading station, thereby realizing the automatic collection of finished products.

[0074] In some possible implementations, the fifth gripper assembly is equipped with an elastic gripper that adapts to the shape of the packaged capacitor, for accurately gripping the packaged capacitor at the unloading station, removing it from the turntable and transferring it to the finished product storage area. In some possible implementations, the fifth gripper assembly can perform a flipping operation, which moves the capacitor from the turntable to the storage area after flipping, with the top cover facing upwards and the bottom landing smoothly in the finished product storage area.

[0075] The finished product storage area may include a finished product conveyor belt to promptly transport the packaged capacitors to the next stage and prevent them from piling up.

[0076] The camera module is fixedly positioned directly above the second workstation, with its lens facing the second workstation. It can accurately capture images of the top cover of the capacitor located at the second workstation, obtaining image information containing capacitor polarity markings (such as the "+" and "-" symbols of bolt-type capacitors and the negative electrode embossing markings of aluminum electrolytic capacitors with solder tabs).

[0077] In some possible implementations, the imaging module can be equipped with a high-resolution industrial camera and supplementary lighting equipment to ensure that clear images can be acquired under different lighting conditions, providing reliable raw data for subsequent polarity recognition and rotation command generation.

[0078] In some possible implementations, the rotation adjustment structure includes a rotary motor that works in conjunction with a third gripper assembly. Upon receiving a rotation command, the rotary motor can drive the third gripper assembly and the capacitor it holds to rotate precisely until the capacitor reaches a preset polarity orientation. This orientation, verified by the process, ensures accurate matching of the polarity markings after subsequent plastic film encapsulation, guaranteeing the matching accuracy between the capacitor polarity and the markings on the subsequent plastic film.

[0079] The flipping structure works in conjunction with the fourth gripper assembly, driving the fourth gripper assembly to flip the capacitor it holds 180°, positioning the capacitor in a suitable position for embedding into the turntable's placement stage. After the flipping is complete, the lifting motor moves the fourth gripper assembly and the capacitor downwards, accurately embedding the capacitor into the hole on the empty placement stage of the turntable (the hole matches the capacitor's electrodes). If the placement stage uses a negative pressure adsorption method, after the capacitor is embedded, it can be controlled to perform an adsorption action to fix the capacitor and prevent displacement during turntable rotation. After releasing the capacitor, the lifting motor drives the fourth gripper assembly to rise, and the controller controls the fourth gripper assembly to flip back to its initial position.

[0080] In some possible implementations, the placement stage may include a platform (with a groove for accommodating the top electrode of the capacitor) that matches the top of the capacitor and auxiliary positioning structures around the platform, such as clamping structures that can move outward and inward, which further improves the stability of capacitor placement.

[0081] The turntable is equipped with at least one placement platform, which can drive the capacitors on the placement platform to the plastic film application station for packaging operations and to the unloading station for unloading finished products by rotating. It is a key conveying component connecting various packaging processes.

[0082] The encapsulation structure consists of a feeding tray, a winding device, and a cutter. The feeding tray is used to release a roll of flat plastic film; the winding device can roll the flat plastic film into a sleeve shape and guide it to be fitted onto the outside of the capacitor located at the plastic film application station; the cutter, after the plastic film is fitted to cover the preset length of the capacitor, performs a cutting action at the end of the plastic film required for the current capacitor encapsulation, thus completing the plastic film encapsulation of a single capacitor.

[0083] In some possible implementations, a heating device can be subsequently installed in the encapsulation structure to heat the capacitor after the plastic film is pasted, so that the plastic film adheres tightly to the capacitor shell, enhancing the encapsulation's robustness, while the cured adhesive layer ensures that the polarity markings remain clear for a long time.

[0084] As the core control unit of the entire device, the controller can coordinate and control the working status of the conveyor belt for the capacitor to be packaged, each gripper assembly, the imaging module, the rotation adjustment structure, the flipping structure, the lifting motor, the turntable, and the packaging structure according to a preset program and timing sequence. It generates a first signal when multiple conditions are met simultaneously (such as the imaging module completing imaging, the third gripper assembly adjusting to a preset position, the fourth gripper assembly returning to its initial position, and the first gripper assembly being in its initial position). This first signal acts as a "switch," triggering each component to coordinate its actions according to the steps in the preceding method embodiment, thereby achieving automated and high-precision packaging of the capacitor plastic film.

[0085] In some possible implementations, the capacitor plastic film encapsulation equipment also includes a display screen to show images captured by the imaging module of the top cover of the capacitor at the second station; it can also display images corresponding to preset polarity orientations, as well as production instruction information generated based on image recognition results, such as capacitor posture adjustment instructions and gripper action control instructions. Operators can intuitively compare the differences between the actual captured images and the images at preset polarity orientations through the display screen, promptly grasp the various operational instructions issued by the equipment based on image analysis, and thus more accurately control the production process, ensuring the accuracy and efficiency of capacitor encapsulation. The capacitor plastic film packaging equipment provided in this embodiment, through the organic integration of various components and the unified scheduling of the controller, fully automates the entire process from capacitor feeding, polarity identification, polarity adjustment, flipping and placement to plastic film packaging and finished product collection. Its structural design closely matches the requirements of the packaging method. Through precise mechanical positioning, image recognition, and timing control, it ensures the accurate correspondence between the polarity markings on the plastic film and the polarity of the capacitor body, effectively avoiding safety accidents caused by polarity misalignment. This significantly improves packaging efficiency, accuracy, and product quality stability, while reducing reliance on manual operation, making it suitable for large-scale, high-precision capacitor plastic film packaging production scenarios.

[0086] This invention also provides a computer storage medium storing a computer program. When the computer program is executed by a processor, it works with relevant hardware devices to implement any of the embodiments described in the previous embodiments of the method of encapsulating a plastic film onto a capacitor.

[0087] This invention also provides a computer program product, including a computer program that, when executed by a processor, combines with relevant hardware modules to implement any of the methods described in the preceding embodiments of the method of encapsulating a plastic film onto a capacitor.

[0088] It is understood that the beneficial effects that the computer storage medium and computer program products provided above can achieve can be referred to the beneficial effects described in the method embodiments, and will not be repeated here.

[0089] While several embodiments of the present invention have been described above, these embodiments are merely illustrative and not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, modifications, and combinations can be made without departing from the spirit of the invention. These embodiments or variations thereof are included in the scope or spirit of the invention, and are encompassed within the scope of the claims and their equivalents.

Claims

1. A method for encapsulating a plastic film onto a capacitor, characterized in that, Includes the following steps: Upon receiving the first signal, the first gripper assembly located at the first initial position is triggered to retract, thereby causing the first, second, and third grippers of the first gripper assembly to clamp the capacitors located at the first, second, and third workstations, respectively. The first signal is generated when the imaging module completes imaging of the top cover of the capacitor located at the second workstation clamped by the second gripper assembly, the third gripper assembly adjusts the capacitor located at the third workstation clamped by the second gripper assembly to a preset polarity orientation through a rotation operation, and the fourth gripper assembly completes a flipping operation, returns to the fourth initial position, and resumes its open state, while the first gripper assembly is located at the first initial position. The preset polarity orientation refers to the specific spatial orientation of the positive and negative terminals of the first capacitor at the third workstation after the rotation operation. This orientation ensures that after the first capacitor undergoes subsequent encapsulation processes and is encapsulated in a plastic film, the polarity markings on the plastic film match the positive and negative terminals of the first capacitor. The first capacitor is any capacitor that will undergo plastic film encapsulation and whose polarity can be identified from an image taken of its top cover. Control the second gripper assembly to open and return to the second initial position; Control the third gripper assembly to open and return to the third initial position; The first gripper assembly is controlled to move to a first designated position, thereby causing the capacitors located at the first station, the second station, and the third station to be moved to the second station, the third station, and the fourth station, respectively. The second gripper assembly, the third gripper assembly, and the fourth gripper assembly are controlled to retract synchronously, thereby clamping the capacitors located at the second station, the third station, and the fourth station, respectively. The first gripper assembly is controlled to open, and then the first gripper assembly is controlled to return to the first initial position.

2. The method for encapsulating a plastic film onto a capacitor according to claim 1, characterized in that, After the first gripper assembly returns to the first initial position, the method further includes: The camera module is triggered to capture an image of the top cover of the second capacitor currently located at the second workstation, thereby obtaining a first image. Based on the first image and the preset polarity orientation, a rotation command corresponding to the second capacitor is generated; the rotation command is used to trigger the third gripper assembly to rotate the second capacitor to the preset polarity orientation after the second capacitor is moved to the third station and clamped by the third gripper assembly. Based on the rotation command corresponding to the third capacitor currently located at the third work station, the third gripper assembly is controlled to rotate, so as to drive the third capacitor to rotate to the preset polarity position; After the fourth gripper assembly performs a flipping operation, the lifting motor is controlled to drive the fourth gripper assembly to move downward with the flipped capacitor, so that the fourth capacitor is embedded in the hole of the turntable empty placement platform, and the hole corresponds to the capacitor electrode. Control the fourth gripper assembly to open, and control the lifting motor to drive the fourth gripper assembly to rise, and then control the fourth gripper assembly to flip back to the fourth initial position; When any of the placement platforms on the turntable, where capacitors are placed, rotates to the plastic film application station, the encapsulation structure is triggered to sequentially perform the operations of feeding, rolling, and cutting, and the plastic film is pasted onto the fifth capacitor currently located at the plastic film application station, so that the positive and negative terminals of the fifth capacitor with the plastic film pasted on match the polarity markings on the plastic film.

3. The method for encapsulating a plastic film onto a capacitor according to claim 1, characterized in that, When the first capacitor is a bolt-type electrolytic capacitor, the polarity markings include: a positive symbol "+" and a negative symbol "-" on the top cover plate; When the first capacitor is a soldered aluminum electrolytic capacitor, the polarity marking includes: a negative terminal with an embossed marking on the top cover plate, thereby identifying the negative terminal and then identifying the positive terminal.

4. The method for encapsulating a plastic film onto a capacitor according to claim 1, characterized in that, The shooting module includes a lens located above the second workstation, with the lens facing the second workstation.

5. The method for encapsulating a plastic film onto a capacitor according to claim 2, characterized in that, After the control lifting motor drives the fourth gripper assembly to move downwards with the flipped capacitor, the method further includes: If the placement platform is equipped with an additional adsorption structure, the adsorption function is activated to fix the capacitor.

6. The method for encapsulating a plastic film onto a capacitor according to claim 2, characterized in that, The step of controlling the third gripper assembly to rotate based on a rotation command corresponding to the third capacitor currently located at the third workstation, so as to rotate the third capacitor to the preset polarity position, includes: Based on the rotation command corresponding to the third capacitor currently located at the third work station, a rotary motor is driven to rotate the third gripper assembly, thereby rotating the third capacitor to the preset polarity position.

7. The method for encapsulating a plastic film onto a capacitor according to claim 2, characterized in that, The trigger packaging structure sequentially performs the operations of feeding, curling, and cutting, attaching the plastic film to the fifth capacitor currently located at the plastic film attaching station, so that the positive and negative terminals of the fifth capacitor with the plastic film attached match the polarity markings on the plastic film, including: The feeding tray is controlled to release a flat plastic film, and the rolling device is controlled to roll the plastic film into a sleeve shape and fit it onto the outside of the fifth capacitor. Then, the cutter is controlled to perform a cutting action after the plastic film is fitted to cover the fifth capacitor to a preset length. The cutting position is the interval area on the plastic film between two adjacent capacitors.

8. The method for encapsulating a plastic film onto a capacitor according to any one of claims 1 to 7, characterized in that, The method further includes: When the turntable moves the packaged capacitor to the unloading station, the fifth gripper assembly is controlled to remove the packaged capacitor from the turntable and move it to the finished product storage area.

9. The method for encapsulating a plastic film onto a capacitor according to claim 8, characterized in that, The finished product storage area includes: A finished product conveyor belt used to carry and transport the packaged capacitors.

10. A capacitor plastic film encapsulation device, characterized in that, include: The package includes a capacitor conveyor belt, a first gripper assembly, a second gripper assembly, a third gripper assembly, a fourth gripper assembly, a fifth gripper assembly, a camera module, a rotation adjustment structure, a flipping structure, a lifting motor, a turntable, a packaging structure, and a controller. The capacitor conveyor belt is used to transport capacitors with their top covers facing upwards to the first workstation. The first gripper assembly is provided with a first gripper, a second gripper, and a third gripper for transferring capacitors between workstations; the second gripper assembly, the third gripper assembly, and the fourth gripper assembly are respectively used to clamp the capacitors at the corresponding workstations; The fifth gripper assembly is used to remove the packaged capacitor from the turntable and move it to the finished product storage area; The shooting module is positioned above the second workstation and includes a lens facing the second workstation for shooting the top cover of the capacitor located at the second workstation. The rotation adjustment structure includes a rotary motor, which cooperates with the third gripper assembly to drive the third gripper assembly and the capacitor it grips to rotate to a preset polarity position. The flipping structure cooperates with the fourth gripper assembly to drive the fourth gripper assembly to flip the capacitor it holds by 180°. The lifting motor drives the fourth gripper assembly, carrying the flipped capacitor, to move downwards, so that the capacitor is embedded in the hole of the empty placement platform of the turntable, the hole corresponding to the capacitor electrode. Then, the controller controls the fourth gripper assembly to open. Then, the lifting motor is also used to drive the fourth gripper assembly to rise. The controller is also used to control the fourth gripper assembly to flip back to the fourth initial position. The turntable is provided with at least one placement platform, which is used to drive the capacitor placed into any of the placement platforms through the fourth gripper assembly to the plastic film application station or the unloading station. The encapsulation structure includes: a feeding tray, a winding device, and a cutter. The feeding tray is used to release a flat plastic film, and the winding device is used to roll the plastic film into a sleeve shape and guide it to be fitted onto the outside of the capacitor located at the plastic film application station. The cutter is used to cut the plastic film after it has been fitted to the preset length of the capacitor at the plastic film application station. The controller is used to control the conveyor belt for the capacitor to be packaged, the first gripper assembly, the second gripper assembly, the third gripper assembly, the fourth gripper assembly, the fifth gripper assembly, the shooting module, the rotation adjustment structure, the flipping structure, the lifting motor, the turntable and the packaging structure to work together in a preset sequence to realize the method of packaging plastic film onto a capacitor as described in any one of claims 1 to 9.

Images