Hydraulic press-fitting device for metallized film capacitor element

Abstract

The utility model provides a metallized film capacitor element hydraulic press-fitting device, which relates to the technical field of metallized film production and comprises a rack, a pressing block, a bearing part, two groups of guide rails and a guide rail driving part. The rack comprises a bottom plate and a top plate; the bottom plate and the top plate are arranged in parallel and connected through supporting columns. The pressing block is connected to the top plate through a press-fitting driving piece. The bearing part is mounted on the bottom plate; the two groups of guide rails are parallel to each other and are respectively positioned on two sides of the bearing part; the guide rail driving piece is arranged on the bottom plate and used for driving the guide rail to be adjusted between a first height position and a second height position in the extending direction of the supporting column in a lifting mode. The dynamically adjusted guide rail system not only keeps the convenience of tool movement, but also prevents a pressure conduction path from passing through the moving wheels; and the operation requirement of manually entering a press-fitting area is eliminated, and the potential safety hazard of equipment operation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of metallized film production technology, and more specifically, to a hydraulic pressing device for metallized film capacitor elements. Background Technology

[0002] After the flattened metallized film capacitor element is initially shaped by winding and flattening, it needs to be finally shrunk and shaped under certain pressure conditions. In the current production process, the initially shaped capacitor element is usually fixed on a shaping fixture, which is then pushed into the pressing area of ​​a hydraulic jack or pressing mechanism. Finally, the hydraulic jack or pressing mechanism is used for pressing, and the shaping fixture is pushed out of the pressing area after pressing. This production process has some drawbacks: for example, the shaping fixture needs to be handled manually, which is time-consuming and labor-intensive, and there are certain safety hazards because people need to enter the pressing area; even if some shaping fixtures have casters at the bottom, the casters are easily damaged when the shaping fixture is pressed in the pressing area due to the pressure. Utility Model Content

[0003] The problem solved by this invention is how to avoid manual handling of the shaping fixture in and out of the pressing area, and how to reduce the pressure on the bottom moving wheels of the shaping fixture.

[0004] To solve the above problems, this utility model provides a hydraulic pressing device for metallized film capacitor elements, including a frame, a pressing block, a carrier, two sets of guide rails and a guide rail drive.

[0005] The frame includes a base plate and a top plate; the base plate and the top plate are arranged in parallel and connected by support columns;

[0006] The pressure block is connected to the top plate via a press-fitting drive component;

[0007] The load-bearing components are mounted on the base plate;

[0008] The two sets of guide rails are parallel to each other and are located on both sides of the load-bearing component;

[0009] The guide rail drive is mounted on the base plate and is used to drive the guide rail to adjust its height between a first height position and a second height position in the extension direction of the support column.

[0010] Specifically, when the guide rail is at the first height position, the working surface of the guide rail is located between the base plate and the bearing surface of the bearing component; when the guide rail is at the second height position, the working surface of the guide rail is located between the top plate and the bearing surface of the bearing component.

[0011] In use, the hydraulic pressing device for metallized film capacitor elements of this utility model has the following characteristics: During the tooling transfer stage, the guide rail is at the second height position, forming a continuous slide rail to support the tooling's moving wheels. Operators can push the tooling above the carrier component via the guide rail from outside the equipment. Once the tooling reaches the predetermined position, the guide rail drive lowers the guide rail to the first height position, and the tooling falls onto the surface of the carrier component, disengaging the moving wheels from the guide rail. When the pressing drive pushes the pressure block down, the pressure is entirely applied between the carrier component and the pressure block, preventing the moving wheels from bearing the load. After pressing is completed, the guide rail is raised back to the second height position, and the operator can move the tooling out of the equipment along the guide rail. The liftable guide rail achieves physical isolation between the tooling transfer and pressing stages, completely relieving the moving wheels of stress during the pressing process. Compared to a fixed guide rail structure, the dynamically adjustable guide rail system retains the convenience of tooling movement while avoiding pressure transmission through the moving wheels; it eliminates the need for manual entry into the pressing area, reducing potential safety hazards during equipment operation. The moving wheels only briefly contact the guide rail during the tooling transfer stage and are completely released from the stress state during the pressing stage, which greatly extends the service life of the moving wheels.

[0012] Optionally, it also includes a buffer block; the buffer block is connected to the base plate or the carrier; in the extension direction of the guide rail, the buffer block is located between the two ends of the guide rail.

[0013] Optionally, a buffer plate is installed on the base plate or the bearing component; a screw parallel to the extension direction of the guide rail is provided on the buffer plate; a buffer block is installed at the end of the screw.

[0014] Optionally, the carrier includes two support plates; the two support plates are installed at intervals on the base plate; the support plates are located between two guide rails and are parallel to each other.

[0015] Optionally, it also includes a tooling latch; the tooling latch is mounted on the base plate and is used to fix the fixture for loading the capacitor element.

[0016] Optionally, the press-fitting drive includes a hydraulic cylinder; the hydraulic cylinder is mounted on the top plate, and the piston rod of the hydraulic cylinder is fixedly connected to the pressure block; the piston rod of the hydraulic cylinder is parallel to the support column.

[0017] Optionally, a pressure sensor is provided between the piston rod of the hydraulic cylinder and the pressure block; the pressure sensor is used to detect the pressure between the piston rod and the pressure block.

[0018] Optionally, the guide rail drive includes a cylinder; the cylinder is mounted on the base plate, and the piston rod of the cylinder is connected to the bottom of the guide rail; the piston rod of the cylinder is parallel to the support column.

[0019] Optionally, a linear bearing is installed inside the base plate; a shaft is provided inside the linear bearing; the shaft is connected to the bottom end of the guide rail.

[0020] Optionally, multiple distance measuring devices are installed on the bottom surface of the top plate; the multiple distance measuring devices correspond to different positions on the surface of the capacitor element shaping fixture, and are used to detect the distance between the capacitor element shaping fixture and the surface of the capacitor element shaping fixture. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the pressing device of this utility model;

[0022] Figure 2 for Figure 1 The main view;

[0023] Figure 3 for Figure 1 A side sectional view;

[0024] Figure 4 for Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 5 for Figure 3 A magnified view of a section at point B.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Base plate; 2. Top plate; 3. Enclosure plate; 4. Base; 5. Foot; 6. Hydraulic cylinder; 7. Pressure block; 8. Support column; 9. Support plate; 10. Guide rail; 11. Pneumatic cylinder; 12. Mounting plate; 13. Locking block; 14. Side plate; 15. Buffer block; 16. Buffer plate; 17. Screw. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0029] In the attached diagram, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing up and the negative direction representing down. The X-axis represents the horizontal direction and is designated as the front and back position, with the positive direction of the X-axis representing the front and the negative direction representing the back. The Y-axis represents the left and right position, with the positive direction of the Y-axis representing the left and the negative direction representing the right. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0031] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0032] In related technologies, the pressing process for flat components of metallized film capacitors suffers from low efficiency due to manual operation, safety hazards, and damage to the moving wheels of the tooling under pressure. Traditional pressing mechanisms rely on manual handling of the shaped tooling to the pressing area, requiring operators to frequently enter the equipment, posing a risk of mechanical injury. The moving wheels at the bottom of the tooling directly bear the pressing pressure, and are prone to deformation or breakage over long-term use, affecting the operational stability of the equipment.

[0033] To address the problems existing in the aforementioned related technologies, this embodiment provides a hydraulic pressing device for metallized film capacitor elements.

[0034] like Figure 1-5As shown, the pressing device includes a frame, a pressing block 7, a carrier component, two sets of guide rails 10, and a guide rail drive component. The frame includes a base plate 1 and a top plate 2; the base plate 1 and the top plate 2 are arranged in parallel and connected by a support column 8; the pressing block 7 is connected to the top plate 2 by the pressing drive component; the carrier component is installed on the base plate 1; the two sets of guide rails 10 are parallel to each other and are located on both sides of the carrier component; the guide rail drive component is set on the base plate 1 and is used to drive the guide rails 10 to adjust their height between a first height position and a second height position in the extension direction of the support column 8; wherein, when the guide rail 10 is at the first height position, the working surface of the guide rail 10 is located between the base plate 1 and the bearing surface of the carrier component; when the guide rail 10 is at the second height position, the working surface of the guide rail 10 is located between the top plate 2 and the bearing surface of the carrier component.

[0035] The bottom of the base plate 1 can be provided with a corresponding base 4 and feet 5. The base 4 is used to support the base plate 1 and to house the guide rail drive components and other structures. The top plate 2 can be provided with a corresponding enclosure 3. The enclosure 3 is used to hide some structures on the top plate 2, making the pressing device more aesthetically pleasing and also protecting the specific structures on the top plate 2.

[0036] Specifically, the frame consists of a base plate 1 and a top plate 2 connected by support columns 8 to form a rigid frame. The pressure block 7 is suspended below the top plate 2 by a press-fit drive unit, and the load-bearing component is fixed to the upper surface of the base plate 1. Two sets of parallel guide rails 10 are arranged on either side of the load-bearing component. The guide rail drive unit controls the vertical lifting and lowering movement of the guide rails 10, enabling switching between a first height position and a second height position. In the first height position, the working surface of the guide rail 10 is lower than the bearing surface of the load-bearing component, at which point the fixture is completely supported by the load-bearing component. In the second height position, the working surface of the guide rail 10 is higher than the bearing surface of the load-bearing component, at which point the guide rail 10 forms a slide rail support surface higher than the bearing surface. The load-bearing component is made of a pressure-resistant material, and positioning grooves can be provided on its surface to ensure the placement accuracy of the fixture.

[0037] Furthermore, during the tooling transfer stage, the guide rail 10 is at its second height position, forming a continuous slide rail to support the moving wheels of the tooling. The operator can push the tooling above the carrier via the guide rail 10 from outside the pressing device. Once the tooling reaches the predetermined position (i.e., above the carrier), the guide rail drive lowers the guide rail 10 to its first height position, and the tooling falls onto the surface of the carrier, disengaging the moving wheels from the guide rail 10. When the pressing drive drives the pressing block 7 downwards, the pressure is entirely applied between the carrier and the pressing block 7, preventing the moving wheels from bearing the load. After pressing is complete, the guide rail 10 is raised back to the second height position, and the operator can move the tooling out of the pressing device along the guide rail 10. This invention achieves physical isolation between the tooling transfer and pressing stages through the liftable guide rail 10 system, completely relieving the moving wheels of stress during the pressing process. Compared to the fixed guide rail 10 structure, the dynamically adjustable guide rail 10 system retains the convenience of tooling movement while avoiding pressure transmission through the moving wheels; it eliminates the need for manual entry into the pressing area, reducing potential safety hazards during equipment operation. The tooling transfer process is completed using the guide rail 10 system, significantly improving work efficiency. The moving wheels only briefly contact the guide rail 10 during tooling transfer and are completely released from stress during the pressing stage, greatly extending the service life of the moving wheels. The rigid fit between the load-bearing component and the pressure block 7 ensures uniform pressure distribution, improving the stability of capacitor element molding quality.

[0038] Optionally, the pressing device also includes a buffer block 15; the buffer block 15 is connected to the base plate 1 or the carrier; in the extension direction of the guide rail 10, the buffer block 15 is located between the two ends of the guide rail 10.

[0039] Specifically, the buffer block 15 refers to a limiting component with elastic buffering function. It can be made of rubber or polyurethane material and is fixed to the base plate 1 or the bearing component at a preset position by bolts or welding. The arrangement of the buffer block 15 between the two ends of the guide rail 10 in the extension direction allows it to directly contact the side wall of the tooling, absorbing impact energy through elastic deformation during tooling movement. The buffer block 15 is installed in the middle section of the guide rail 10 in the extension direction. When the tooling slides along the guide rail 10, its side wall contacts the buffer block 15 and generates frictional resistance. This resistance can suppress excessive displacement of the tooling due to inertia and offset the longitudinal impact force between the tooling and the guide rail 10 through the elastic deformation of the buffer block 15. For example, when the tooling enters the pressing area, the buffer block 15 limits the positional displacement of the tooling through lateral compression, ensuring that the pressing block 7 is aligned with the center of the tooling. At the same time, during the pressing process, the buffer block 15 continuously provides lateral support force to prevent the tooling from sliding laterally due to pressure. By adding a buffer block 15, not only is the positioning deviation caused by the sliding inertia of the tooling solved, but the rigid impact between the tooling and the guide rail 10 is also reduced through elastic buffering, thus extending the service life of the guide rail 10 and the tooling.

[0040] Optionally, a buffer plate 16 is installed on the base plate 1 or the bearing member; a screw 17 parallel to the extension direction of the guide rail 10 is provided on the buffer plate 16; a buffer block 15 is installed at the end of the screw 17.

[0041] Among them, buffer plate 16 refers to the mounting base of the bearing buffer structure, which can be made of steel plate with mounting holes. It is fixed to the base plate 1 or the surface of the bearing component by bolts to form an intermediate buffer layer for pressure transmission. Screw 17 refers to a rod-shaped component with external threads, which can be made of stainless steel. Its axis is parallel to the extension direction of the guide rail 10. The axial displacement of the buffer block 15 is adjusted by screwing the threads.

[0042] For specific details, please refer to... Figure 5 After the buffer plate 16 is fixed to the load-bearing component of the equipment, two sets of parallel screws 17 are installed along the extension direction of the guide rail 10. Buffer blocks 15 are installed at the ends of the screws 17 by means of threaded connection, welding, or snap-fit. The position of the buffer blocks 15 can be precisely adjusted by rotating the screws 17. When the pressing pressure is transmitted to the buffer blocks 15, the polyurethane material undergoes elastic deformation to buffer the instantaneous impact, while the axial stiffness of the screws 17 evenly transmits the remaining pressure to the buffer plate 16. This structure transforms the impact load at the end of the guide rail 10 into the axial elastic deformation of the screws 17, avoiding stress concentration caused by rigid contact. By adding a linkage structure between the buffer plate 16 and the adjustable screws 17, a multi-stage buffering mechanism is formed while maintaining positioning accuracy, effectively reducing the impact load. Simultaneously, by adjusting the position of the buffer blocks 15, the positioning and installation position of the tooling can also be adjusted, ensuring the adjustability of the tooling positioning accuracy.

[0043] Optionally, the support member includes two support plates 9; the two support plates 9 are installed at intervals on the base plate 1; the support plates 9 are located between two guide rails 10 and are parallel to each other.

[0044] The support plate 9 refers to the main structure of the fixture that supports the capacitor element. It can be made of steel plate or high-strength alloy plate and is fixed to the base plate 1 by bolts or welding. It directly bears the pressing pressure and distributes it to the base plate 1. Interval installation means that two support plates 9 are spaced a certain distance apart, forming a stable support surface through lateral distribution and avoiding localized stress concentration. Parallel to the guide rail 10 means that the extension direction of the support plate 9 is consistent with the guide trajectory of the guide rail 10.

[0045] Specifically, during the press-fitting process, after the capacitor element shaping fixture moves along the guide rail 10 to above the carrier, the guide rail 10 descends, causing the fixture to fall onto the support surface formed by the two support plates 9. The support plates 9 are rigidly connected to the base plate 1, uniformly transmitting the press-fitting pressure to the overall frame structure and preventing the fixture's moving wheels from bearing the load. The gap area formed between the two support plates 9 can accommodate the bottom structure of fixtures of different sizes. After the fixture contacts the support surface, the moving wheels detach from the working surface of the guide rail 10 and are suspended in the air, thereby eliminating the possibility of damage to the moving wheels due to pressure. Through the independently set support plates 9 and the separate bearing structure of the moving wheels, the fixture in the press-fitting stage is completely supported by the support plates 9, and the moving wheels are only used for the movement function of the fixture in the transfer stage. The division of labor between the two is clear, fundamentally avoiding damage to the wheels due to pressure, realizing the physical isolation between the fixture's bearing structure and the moving structure, solving the problem of easy damage to the moving wheels during the press-fitting process. At the same time, the parallel layout of the two support plates 9 forms a stable rigid support surface, improving the positioning accuracy and force uniformity of the fixture, and reducing the need for manual adjustment.

[0046] Optionally, it also includes a tooling latch; the tooling latch is installed on the base plate 1 and is used to fix the fixed tooling for loading the capacitor element.

[0047] Among them, tooling lock refers to a fixing device that uses a mechanical structure to constrain a fixed tooling. Specifically, it can be implemented by manually rotating a buckle or by a pneumatic locking structure. Its function is to eliminate tooling displacement during the pressing process through a rigid connection.

[0048] For specific details, please refer to... Figure 4 The tooling lock may include a mounting plate 12, a locking block 13, and side plates 14. The mounting plate 12 is mounted on the base plate 1. Two parallel side plates 14 are spaced apart and mounted on the side wall of the mounting plate 12. One end of the locking block 13 is rotatably mounted between the two side plates 14 via a pin. The locking block 13 switches between states (locked tooling state and unlocked tooling state) by rotation. The installation method of the tooling lock is not limited. For example, it can be fixed to the preset mounting holes on the base plate 1 by bolts (or welded to the base plate 1). When the shaped tooling containing the capacitor element is pushed into the pressing area, the operator can manually rotate the locking block 13 to make the locking block 13 rigidly engage with the positioning groove of the shaped tooling. After pressing is completed, the lock can be reversed to release the constraint, allowing the shaped tooling to move smoothly out along the guide rail 10.

[0049] Optionally, the press-fitting drive component includes a hydraulic cylinder 6; the hydraulic cylinder 6 is mounted on the top plate 2, and the piston rod of the hydraulic cylinder 6 is fixedly connected to the pressure block 7; the piston rod of the hydraulic cylinder 6 is parallel to the support column 8.

[0050] The hydraulic cylinder 6 is an actuator that generates linear thrust using hydraulic oil. It can be implemented using a single-acting or double-acting hydraulic cylinder, and the output thrust can be controlled by adjusting the hydraulic system pressure. The piston rod is fixedly connected to the pressure block 7 via a flange or bolts, eliminating the clearance error present in traditional linkage mechanisms. The piston rod and the support column 8 are parallel, meaning that the axis of the hydraulic cylinder 6 is spatially parallel to the extension direction of the support column 8 during installation, and this parallelism is maintained by the rigid connection between the top plate 2 and the support column 8.

[0051] Specifically, after the hydraulic cylinder 6 is installed on the top plate 2, the hydraulic system drives the piston rod to move vertically in a straight line along the extension direction of the support column 8, and the piston rod drives the pressure block 7 to move synchronously. Since the piston rod and the support column 8 remain parallel, the pressure block 7 always moves in a single vertical direction during the pressing process, avoiding one-sided pressure on the capacitor element due to deviation in the movement trajectory. Through the linear hydraulic drive of the hydraulic cylinder 6 and the parallel layout of the piston rod and the support column 8, the pressure output direction is constant and controllable, the overall rigidity of the mechanism is enhanced, and pressure fluctuations and deviations are effectively avoided. Stable transmission of hydraulic pressure is achieved during the pressing process, preventing tearing of the capacitor element film or damage to the metallization layer due to pressure deviation or sudden release, ensuring the uniformity of the thickness and electrical performance of the pressed capacitor element, and improving the reliability of the pressing process and the yield rate of finished products.

[0052] Optionally, a pressure sensor is provided between the piston rod of the hydraulic cylinder 6 and the pressure block 7; the pressure sensor is used to detect the pressure between the piston rod and the pressure block 7.

[0053] The pressure sensor is a detection device that converts mechanical pressure signals into electrical signals. Specifically, it can be implemented using a resistance strain gauge sensor or a piezoelectric sensor. By measuring the contact pressure between the piston rod and the pressure block 7, it reflects the actual load applied to the capacitor element during the pressing process in real time. This device, by directly embedding itself into the force transmission path, avoids the influence of mechanical transmission clearances or structural deformation on measurement accuracy.

[0054] Specifically, as the hydraulic cylinder 6 drives the pressure block 7 downward, the pressure sensor continuously collects pressure data between the piston rod and the pressure block 7 and transmits this data to the control system. When the pressure reaches a preset threshold, the control system adjusts the output pressure of the hydraulic cylinder 6 to keep the pressing process within the pressure range required by the process. This solves the problem of unstable pressing quality of capacitor components due to inaccurate pressure control during the pressing process or equipment damage caused by excessive pressing pressure. It realizes real-time monitoring and closed-loop regulation of the pressing pressure, ensuring that the pressing process is always within the pressure range required by the process, thereby improving the product qualification rate and extending the service life of the equipment.

[0055] Optionally, the guide rail drive includes a cylinder 11; the cylinder 11 is mounted on the base plate 1, and the piston rod of the cylinder 11 is connected to the bottom of the guide rail 10; the piston rod of the cylinder 11 is parallel to the support column 8.

[0056] Among them, cylinder 11 refers to a power element that uses compressed air to generate linear reciprocating motion. Specifically, it can be implemented by using a double-acting cylinder 11 or a single-acting cylinder 11, which directly drives the guide rail 10 to rise and fall vertically through the extension and retraction of the piston rod.

[0057] Specifically, the piston rod of cylinder 11 is rigidly connected to the bottom of guide rail 10 via flange or thread. When the piston rod extends or retracts, it drives guide rail 10 to move vertically along the extension direction of support column 8.

[0058] Optionally, a linear bearing is installed inside the base plate 1; a shaft is installed inside the linear bearing; the shaft is connected to the bottom end of the guide rail 10.

[0059] The linear bearing refers to the sliding guide component embedded inside the base plate 1. Specifically, it can be implemented using a low-friction bearing with a ball bearing structure. Its function is to provide a constraint path for the axial movement of the shaft and limit the lateral displacement of the guide rail 10 during the lifting and lowering process. The shaft refers to the rod-shaped component rigidly connected to the bottom end of the guide rail 10. Specifically, it can be made of stainless steel or alloy steel. Its function is to convert the lifting and lowering movement of the guide rail 10 into axial sliding along the linear bearing, while simultaneously enhancing the bending stiffness of the guide rail 10 ends by fixing both ends.

[0060] Specifically, the linear bearing is pre-installed in the mounting hole of the base plate 1, with its axis aligned with the extension direction of the support column 8. The shaft passes through the inner cavity of the linear bearing, and its upper end is fixed to the connecting seat at the bottom of the guide rail 10 by bolts or welding. When the cylinder 11 drives the guide rail 10 to rise or fall, the shaft slides vertically along the inner wall of the linear bearing. The shafts at both ends of the guide rail 10 and the linear bearing form symmetrically distributed guiding constraints, limiting the lateral displacement of the guide rail 10 within the clearance range of the linear bearing. This structure ensures that the guide rail 10 remains parallel to the support column 8 during lifting and lowering, preventing unilateral tilting or swaying due to uneven force distribution. Through the cooperation of the shaft and the linear bearing, a double mechanical limit is formed at both ends of the guide rail 10, distributing the force on the guide rail 10 to two symmetrical support points on the base plate 1, eliminating the torque imbalance problem caused by single-point drive. It achieves precise guidance of axial movement during the lifting and lowering of guide rail 10, effectively suppresses lateral offset and tilting, ensures the relative positional stability between the bearing component and the working surface of guide rail 10, reduces tooling movement jamming or positioning deviation caused by misalignment of guide rail 10, and extends the service life of the guide rail 10 and the bearing component.

[0061] Optionally, multiple distance measuring devices are installed on the bottom surface of the top plate 2; each distance measuring device corresponds to a different position on the surface of the capacitor element shaping fixture, and is used to detect the distance between the device and the surface of the capacitor element shaping fixture. A controller structure should also be provided to compare the differences between the various height groups, and when the difference exceeds a threshold, the press-fitting drive should be stopped.

[0062] Among them, the ranging device refers to a non-contact distance detection device, which can be implemented by using a laser ranging sensor or an ultrasonic sensor. It calculates the distance value by emitting a detection signal and receiving the reflected signal. It monitors the change in the distance between the tooling surface and the top plate 2 in real time during the pressing process.

[0063] The multiple ranging devices refer to at least three sensors spatially distributed on the bottom surface of the top plate 2. Specifically, they can be arranged at both ends and the center along the length of the fixture to cover key areas of the fixture surface. Multi-point synchronous detection is used to determine the horizontal status of the fixture. Alternatively, for rectangular fixtures, four sensors can be used to detect the four corners. The controller structure refers to a control module with data acquisition and logic operation functions. Specifically, a PLC or embedded controller can be used. It receives real-time data from the ranging devices and calculates the height difference between points. When the difference exceeds a preset threshold, the power output of the pressing drive is cut off, ensuring that the pressing action stops immediately when the fixture tilts.

[0064] Specifically, before pressing, the ranging device performs multi-point synchronous scanning of the tooling surface and sends the distance data of each detection point to the controller. The controller calculates the height difference between each point. If the difference exceeds the safety threshold, it is determined that the tooling is tilted or offset, and the pressing drive immediately stops. During the pressing process, the ranging device continuously monitors the distance change between the tooling surface and the top plate 2. When an abnormal reduction in local distance is detected, the controller synchronously triggers the shutdown protection to avoid damage to components due to concentrated pressure. This monitoring mechanism covers symmetrical points along the length of the tooling and can effectively identify two abnormal states: longitudinal offset or lateral tilt. By setting multiple spatially distributed ranging devices on the top plate 2 and combining them with the controller to dynamically analyze the differences in multi-point data, the tooling offset can be accurately identified and the shutdown protection can be automatically triggered, eliminating the safety hazards of manual intervention. It realizes all-round real-time monitoring of the tooling position during the pressing process. When the tooling tilts or shifts, the pressing action is automatically terminated, avoiding damage to the internal film of the capacitor element caused by uneven pressure distribution, and eliminating the operational risks of manually entering the pressing area to adjust the tooling.

[0065] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A hydraulic pressing device for metallized film capacitor elements, characterized in that, include: The frame includes a support column (8), a base plate (1) and a top plate (2); the base plate (1) and the top plate (2) are arranged in parallel and connected by the support column (8); The pressure block (7) is connected to the top plate (2) by a pressure-fitting drive component; A support component, which is mounted on the base plate (1); Two sets of guide rails (10); the two sets of guide rails (10) are parallel to each other and are located on both sides of the bearing member respectively; A guide rail drive is provided on the base plate (1) for driving the guide rail (10) to rise and fall between a first height position and a second height position in the extension direction of the support column (8). When the guide rail (10) is at the first height position, the working surface of the guide rail (10) is located between the bottom plate (1) and the bearing surface of the bearing member; when the guide rail (10) is at the second height position, the working surface of the guide rail (10) is located between the top plate (2) and the bearing surface of the bearing member.

2. The hydraulic pressing device for metallized film capacitor elements according to claim 1, characterized in that, It also includes a buffer block (15); the buffer block (15) is connected to the base plate (1) or the carrier; in the extension direction of the guide rail (10), the buffer block (15) is located between the two ends of the guide rail (10).

3. The hydraulic pressing device for metallized film capacitor elements according to claim 2, characterized in that, A buffer plate (16) is installed on the base plate (1) or the bearing member; a screw (17) parallel to the extension direction of the guide rail (10) is provided on the buffer plate (16); and a buffer block (15) is installed at the end of the screw (17).

4. The hydraulic pressing device for metallized film capacitor elements according to claim 1, characterized in that, The support member includes two support plates (9); the two support plates (9) are arranged opposite to each other and installed at intervals on the base plate (1); the support plates (9) are located between two guide rails (10) and are parallel to each other.

5. The hydraulic pressing device for metallized film capacitor elements according to claim 1, characterized in that, It also includes tooling latches; the tooling latches are installed on the base plate (1) and are used to fix the fixed tooling for loading capacitor elements.

6. The hydraulic pressing device for metallized film capacitor elements according to claim 1, characterized in that, The press-fitting drive component includes a hydraulic cylinder (6); the hydraulic cylinder (6) is mounted on the top plate (2), and the piston rod of the hydraulic cylinder (6) is fixedly connected to the pressure block (7); the piston rod of the hydraulic cylinder (6) is parallel to the support column (8).

7. The hydraulic pressing device for metallized film capacitor elements according to claim 6, characterized in that, A pressure sensor is provided between the piston rod of the cylinder (6) and the pressure block (7); the pressure sensor is used to detect the pressure between the piston rod and the pressure block (7).

8. The hydraulic pressing device for metallized film capacitor elements according to claim 1, characterized in that, The guide rail (10) drive component includes a cylinder (11); the cylinder (11) is mounted on the base plate (1), and the piston rod of the cylinder (11) is connected to the bottom of the guide rail (10); the piston rod of the cylinder (11) is parallel to the support column (8).

9. The hydraulic pressing device for metallized film capacitor elements according to claim 8, characterized in that, A linear bearing is installed inside the base plate (1); a shaft is provided inside the linear bearing; the shaft is connected to the bottom end of the guide rail (10).

10. The hydraulic pressing device for metallized film capacitor elements according to any one of claims 1-9, characterized in that, Multiple distance measuring devices are installed on the bottom surface of the top plate (2); the multiple distance measuring devices correspond to different positions on the surface of the capacitor element shaping fixture, and are used to detect the distance between the capacitor element shaping fixture and the surface of the capacitor element shaping fixture.

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