A bolt riveting type press device for laminated capacitor

Abstract

A bolt riveting type pressing device of a laminated capacitor, the pressing device comprising: a workbench; a lower die fixedly connected to the workbench, the lower die comprising a support base fixedly connected to the workbench, a first alignment plate provided with a first limiting piece, a second alignment plate provided with a second limiting piece, and a riveting pressing piece fixedly connected to the support base and penetrating through the first alignment plate and the second alignment plate in sequence; an upper die located on a side of the lower die away from the workbench; a cathode foil placed on the first alignment plate with the cathode foil abutting against the first limiting piece, and an anode foil placed on the second alignment plate with the anode foil abutting against the second limiting piece, a projection of the cathode foil and a projection of the anode foil in a first direction being partially overlapped, the riveting pressing piece being integrally formed with a plurality of rivet points on a side of the riveting pressing piece away from the support base, and the projections of the rivet points in the first direction being respectively partially overlapped with the projections of the cathode foil and the anode foil in the first direction, and when the upper die is pressed downward to the lower die to the rivet points, the rivet points extrude the cathode foil and the anode foil to form plastic deformation.

Description

Technical Field

[0001] This utility model relates to the field of capacitor manufacturing equipment, and in particular to a bolt riveting type pressing device for multilayer capacitors. Background Technology Multilayer capacitors are core electronic components made of cathode foil, anode foil, and an intermediate insulating dielectric layer. Their performance directly depends on the tight contact between the electrodes and the structural stability. Therefore, the bolt pressing device for multilayer capacitors is a key piece of equipment in their manufacturing. It uses the mechanical pressure between the upper and lower molds to tightly bond the multiple layers of foil to the end caps, achieving efficient conductivity between the electrodes, reducing energy loss, preventing interlayer slippage, and improving vibration resistance.

[0002] Currently, most lamination devices on the market rely on manual labor to stagger and stack the cathode and anode foils in the same lower mold for subsequent lamination. However, manually determining the staggered stacking position can easily lead to inaccurate placement of the cathode and anode foils, potentially causing concentrated current density on the laminated foils during actual use, resulting in localized overheating or even short circuits. Furthermore, existing lamination devices typically use bolts to secure the laminated foils, but in practical applications, prolonged vibration in environments such as automotive applications can also cause interlayer slippage between the laminated foils.

[0003] Therefore, it is necessary to provide a capacitor pressing device that can effectively avoid inaccurate positioning of the cathode foil and anode foil and improve the connection stability between the cathode foil and anode foil. Utility Model Content

[0004] The purpose of this invention is to provide a capacitor pressing device that can effectively avoid inaccurate positioning of the cathode foil and anode foil and improve the connection stability between the cathode foil and anode foil.

[0005] According to one aspect of this application, a bolt-riveting type pressing device for a multilayer capacitor is provided, the pressing device comprising: a worktable, wherein the direction perpendicular to the worktable surface is denoted as a first direction; The lower mold is fixedly connected to the worktable. The lower mold includes a support base fixedly connected to the worktable, a first alignment plate fixedly connected to the side of the support base away from the worktable and provided with a first limiting member, a second alignment plate fixedly connected to the side of the first alignment plate away from the support base and provided with a second limiting member, and a riveting pressure member fixedly connected to the support base and passing through the first alignment plate and the second alignment plate in sequence. The upper mold is located on the side of the lower mold that is away from the worktable; The cathode foil is placed on the first alignment plate against the first limiting member, and the anode foil is placed on the second alignment plate against the second limiting member. The projection portions of the cathode foil and the anode foil in the first direction overlap. The riveting pressure member has a plurality of rivet points integrally formed on the side away from the support base, and the projection of the rivet points in the first direction overlaps with the projection portions of the cathode foil and the anode foil in the first direction. When the upper mold presses down on the lower mold to the rivet points, the rivet points compress the cathode foil and the anode foil to form plastic deformation.

[0006] More preferably, a first pressing hole is formed through the first alignment plate along the first direction, and a second pressing hole is formed through the second alignment plate along the first direction; When viewed along the first direction, the first pressure hole and the second pressure hole are aligned along the first direction, and the end of the riveting member with the rivet point is located in the first pressure hole and the second pressure hole.

[0007] More preferably, the pressing device further includes: A support column, one end of which is fixedly connected to the workbench and extends along the first direction; The pressing mechanism is fixedly connected to the support column and located at the other end of the support column opposite to the worktable.

[0008] More preferably, the pressing mechanism includes: A fixing plate is fixedly connected to the support column; A hydraulic press is fixedly connected to the fixed plate on the side opposite to the worktable. The hydraulic press is provided with a push rod extending along the first direction, and the hydraulic press drives the push rod to slide along the first direction.

[0009] More preferably, the pressing mechanism further includes: The top plate is fixedly connected to the push rod and is located on the side of the push rod away from the hydraulic press; A first sliding rod extends along a first direction and passes through the fixed plate, and is slidably connected to the fixed plate; Wherein, one end of the first slide rod is fixedly connected to the top plate, and when the push rod drives the top plate to move in the first direction, the first slide rod slides in the first direction.

[0010] More preferably, the upper mold is fixedly connected to the top plate and located on the side of the top plate opposite to the push rod, and the upper mold includes: The pressure block is fixedly connected to the upper mold and is located on the side of the upper mold opposite to the top plate; A buffer component is slidably connected to the upper mold and located on the side of the upper mold opposite to the top plate; The buffer component is fixedly connected to an abutment plate and slidably connected to a second slide rod of the upper mold.

[0011] More preferably, the hydraulic press pushes the top plate down, the buffer first abuts against the second alignment plate, and when the hydraulic press continues to press down, the second slide rod slides into the upper mold along the first direction, the pressure block enters the second pressure hole and the first pressure hole in sequence, and pushes the anode foil on the second alignment plate and the cathode foil on the first alignment plate to the rivet point in sequence, and the pressure block presses the anode foil and the cathode foil together with the rivet point.

[0012] More preferably, the workbench is fixedly connected to a plurality of legs on the side opposite to the lower mold, the legs supporting the press. Combined device.

[0013] More preferably, the pressing device further includes: A pressure regulating valve is fixedly connected to the fixing plate and located on the edge of the fixing plate; An emergency stop button box is fixedly connected to the workbench and located on the side of the workbench away from the support legs; The emergency stop button is electrically connected to the hydraulic press.

[0014] More preferably, the pressing device further includes: A time relay is fixedly connected to the workbench and located on the side of the workbench away from the support legs, and is arranged side by side with the emergency stop button box; The battery valve assembly is fixedly connected to the workbench and is located on the side of the workbench away from the support legs, and on the side of the time relay away from the emergency stop button box; The time relay is electrically connected to the hydraulic press, and the battery valve assembly is electrically connected to the hydraulic press.

[0015] This utility model has the following beneficial effects: By having the cathode foil abut against the first limiting member on the first alignment plate and the anode foil abut against the second limiting member on the second alignment plate, the cathode foil and anode foil can be correctly placed on the first alignment plate and the second alignment plate, respectively, avoiding inaccurate positioning of the cathode foil and anode foil. Furthermore, the design where the rivet points plastically deform on the cathode foil and anode foil after the upper and lower molds press down allows the cathode foil and anode foil to interlock at the deformation points, further improving the connection stability between the cathode foil and anode foil. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the pressing device described in one embodiment of this application; Figure 2 This is a schematic diagram of the planar structure of the pressing device described in one embodiment of this application; Figure 3 This is a schematic diagram of the planar structure of the lower mold of the pressing device according to one embodiment of this application; Figure 4 This is a schematic diagram of the planar structure of the pressing device described in one embodiment of this application, on which a cathode foil and an anode foil are placed; Figure 5 This is a three-dimensional structural diagram of the lower mold of the pressing device described in one embodiment of this application; Figure 6 This is a three-dimensional structural schematic diagram of the pressing device described in one embodiment of this application from another perspective; Figure 7 For the Figure 6 Enlarged diagram of point A in the middle Explanation of reference numerals: 100, Pressing device; 10, Workbench; 11, Support leg; 20, Lower mold; 21, Support base; 22, First alignment plate; 22A, First limiting component; 22B, First pressing hole; 23, Second alignment plate; 23A, Second limiting component; 23B, Second pressing hole; 24, Riveting clamping component; 24A, Riveting point; 30, Upper mold; 31, Pressing block; 32, Buffer component; 32A, Abutting plate; 32B, Second sliding rod; 40, Support column; 50, Lowering mechanism; 51, Fixed plate; 52, Hydraulic press; 52A, Push rod; 53, Top plate; 54, First sliding rod; 60, Pressure regulating valve; 70, Emergency stop button box; 80, Time relay; 90, Battery valve group; 200, Cathode foil; 300, Anode foil; F1, First direction. Detailed Implementation

[0018] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Please refer to Figure 1 - Figure 7 One embodiment of this application provides a bolt-riveting type pressing device 100 for multilayer capacitors. The pressing device 100 includes: a worktable 10, a lower mold 20 and an upper mold 30.

[0022] The direction perpendicular to the surface of the workbench 10 is denoted as the first direction F1. The lower mold 20 is fixedly connected to the workbench 10. The lower mold 20 includes a support base 21 fixedly connected to the workbench 10, a first alignment plate 22 fixedly connected to the support base on the side away from the workbench 10 and provided with a first limiting member 22A, a second alignment plate 23 fixedly connected to the first alignment plate 22 on the side away from the support base 21 and provided with a second limiting member 22B, and a riveting pressure member 24 fixedly connected to the support base and passing through the first alignment plate 22 and the second alignment plate 23 in sequence. The upper mold 30 is located on the side of the lower mold 20 away from the workbench 10. The cathode foil 200 abuts against the first limiting member 22A and is placed on the first alignment plate 22, and the anode foil 300 abuts against the second limiting member 22B and is placed on... The cathode foil 200 and anode foil 300 are placed on the second alignment plate 23, and their projections in the first direction F1 overlap. The riveting press 24 has a plurality of rivet points 24A integrally formed on the side away from the support base 21, and the projections of the rivet points 24A in the first direction F1 overlap with the projections of the cathode foil 200 and anode foil 300 in the first direction F1, respectively. When the upper mold 30 presses down on the lower mold 20 to the rivet points 24A, the rivet points 24A compress the cathode foil 200 and anode foil 300 to form plastic deformation.

[0023] In a multilayer capacitor, the cathode foil 200 and anode foil 300 must maintain partial overlap (to avoid short circuits) and maximize the effective electrode area. Traditional manual stacking is prone to misalignment, leading to short circuits or uneven capacitance. The first limiting member 22A and the second limiting member 22B form physical barriers in the vertical direction of the first alignment plate 22 and the second alignment plate 23, respectively. The first alignment plate 22 abuts against and fixes the placement position of the cathode foil 200 through the first limiting member 22A, and the second alignment plate 23 abuts against and fixes the placement position of the anode foil 300 through the second limiting member 22B. The two alignment plates are arranged in layers in the vertical direction, forcing partial overlap between the cathode foil 200 and the anode foil 300, with their edges staggered. This automatically achieves the preset misalignment amount, reducing the short-circuit rate of the finished capacitor. The alignment of the first pressing hole 22B with the second pressing hole 23B, and the design of the rivet point 24A of the riveting member 24 hidden within the two pressing holes, ensures that the pressure applied during pressing only acts on the overlapping area of ​​the cathode and anode foils 300, preventing the rivet point 24A from failing to press against the laminated foils. After the upper and lower molds 20 are pressed together, the pressure of the rivet point 24A is concentrated on the laminated foils, forming localized plastic deformation on the cathode foil 200 and anode foil 300 respectively. This mechanical interlocking between the plastic structures further strengthens the connection stability between the foils, preventing interlayer slippage caused by vibration when relying solely on bolt tightening.

[0024] More preferably, a first pressing hole 22B is formed through the first alignment plate 22 along the first direction F1, and a second pressing hole 23B is formed through the second alignment plate 23 along the first direction F1. Viewed along the first direction F1, the first pressing hole 22B and the second pressing hole 23B are aligned along the first direction F1, and one end of the riveting member 24 with the rivet point 24A is located in the first pressing hole 22B and the second pressing hole 23B.

[0025] The first alignment plate 22 and the second alignment plate 23 are arranged parallel to each other. The first pressing hole 22B and the second pressing hole 23B are strictly aligned along a first direction F1 perpendicular to the first alignment plate 22 and the second alignment plate 23, forming a path channel for the pressing block 31 to reach the rivet point 24A. When the upper mold 30 presses down, the pressing block 31 directly presses down on the rivet point 24A through the pair of vertically aligned alignment holes, avoiding foil distortion caused by pressure imbalance. The design of the rivet point 24A being hidden in the pressing hole ensures precise guidance of the force during pressing and prevents the rivet point 24A from exerting extrusive force on the foil surface when the upper mold 30 is not pressing down. When the pressing block 31 moves downward, it first enters the second pressing hole 23B to contact the anode foil 300, then continues to penetrate the first pressing hole 22B to act on the cathode foil 200, and finally reaches the rivet point 24A to complete the pressing.

[0026] More preferably, the pressing device 100 further includes a support column 40 and a pressing mechanism 50.

[0027] One end of the support column 40 is fixedly connected to the worktable 10 and extends along the first direction F1. The pressing mechanism 50 is fixedly connected to the support column 40 and is located at the other end of the support column 40 away from the worktable 10.

[0028] The support column 40 extends rigidly vertically, forming a closed force flow frame with the worktable 10. (The text abruptly ends here, likely due to an incomplete sentence or missing information.) When mechanism 50 operates, the pressure is directly transmitted to workbench 10 through support column 40, avoiding bending moment deformation caused by traditional cantilever beam structures. Support column 40 not only provides structural support but also serves as a guide reference for pressing mechanism 50.

[0029] More preferably, the pressing mechanism 50 includes: a fixed plate 51 and a hydraulic press 52.

[0030] The fixing plate 51 is fixedly connected to the support column 40. The hydraulic press 52 is fixedly connected to the side of the fixing plate 51 away from the worktable 10. The hydraulic press 52 is provided with a push rod 52A extending along the first direction F1. The hydraulic press 52 drives the push rod 52A to slide along the first direction F1.

[0031] The fixed plate 51, serving as a load-bearing transition structure, forms a rigid connection with the support column 40, evenly distributing the reaction force of the hydraulic press 52 throughout the entire support frame system. The precise guidance of the hydraulic press 52 push rod 52A along the first direction F1 ensures that the pressure application direction coincides with the movement direction of the riveting clamp 24, avoiding angular deviation issues. The hydraulic system achieves stepless pressure regulation through a proportional valve, forming a closed-loop control system in conjunction with a pressure sensor.

[0032] More preferably, the pressing mechanism 50 further includes a top plate 53 and a first slide bar 54.

[0033] The top plate 53 is fixedly connected to the push rod 52A and is located on the side of the push rod 52A away from the hydraulic press 52. The first slide rod 54 extends along the first direction F1 and passes through the fixed plate 51, and is slidably connected to the fixed plate 51. One end of the first slide rod 54 is fixedly connected to the top plate 53. When the push rod 52A drives the top plate 53 to move along the first direction F1, the first slide rod 54 slides along the first direction F1.

[0034] The first sliding rod 54 and the fixed plate 51 form a sliding system, creating a parallel dual-axis drive structure as the push rod 52A is pushed along the first direction F1. This design improves the guiding accuracy of the upper mold 30's downward pressure compared to a single push rod 52A structure. The push rod 52A of the hydraulic press 52 pushes the top plate 53 to move along the first direction F1. The top plate 53 acts as a rigid transition structure for the thrust generated by the lower mold 20, evenly distributing the concentrated downward pressure of the push rod 52A onto the lower mold 20.

[0035] More preferably, the upper mold 30 is fixedly connected to the top plate 53 and is located on the side of the top plate 53 away from the push rod 52A. The upper mold 30 includes: a pressure block 31 and a buffer 32.

[0036] The pressure block 31 is fixedly connected to the upper mold 30 and is located on the side of the upper mold 30 opposite to the top plate 53. The buffer member 32 is slidably connected to the upper mold 30 and is located on the side of the upper mold 30 opposite to the top plate 53. The buffer member 32 is fixedly connected to an abutment plate 32A and slidably connected to a second slide rod 32B of the upper mold 30.

[0037] In this process, the abutment plate 32A of the buffer 32 first contacts the plate surface next to the second pressure hole 23B on the second alignment plate 23 by the push and guide of the hydraulic press 52. After contacting the plate surface, the push rod 52A of the hydraulic press 52 continues to press down. At this time, the second slide rod 32B connecting the abutment will partially slide into the upper mold 30 and gradually press down the relative position of the pressure block 31 that was originally located above the buffer 32 until it passes through the second pressure hole 23B and the first pressure hole 22B in sequence and abuts against the rivet point 24A of the riveting pressure member 24 on the lower mold 20.

[0038] More preferably, the hydraulic press 52 pushes the top plate 53 down, and the buffer 32 first abuts against the second alignment plate. 23. When the hydraulic press 52 continues to press down, the second slide bar 32B slides into the upper mold 30 along the first direction F1, and the pressure block 31 sequentially enters the second pressure hole 23B and the first pressure hole 22B, and sequentially pushes the second alignment plate 23. The anode foil 300 on the first alignment plate 22 and the cathode foil 200 on the first alignment plate 22 are pressed together with the rivet point 24A by the pressing block 31 and the rivet point 24A to press the anode foil 300 and the cathode foil 200 together.

[0039] In this process, the buffer 32 first contacts the second alignment plate 23, followed by the precise guidance of the second slide bar 32B to avoid angular deviation, and finally the surface of the abutment plate 32A abuts against the riveting clamp 24. During the process of the clamping block 31 penetrating the two clamping holes sequentially, the anode foil 300 undergoes a certain degree of pre-deformation after passing through the second clamping hole 23B, and the cathode foil 200 also undergoes a certain degree of pre-deformation after passing through the first clamping hole 22B. Finally, the rivet point 24A and the clamping block 31 are pressed together for a period of time, forming a plastic deformation that mechanically interlocks between the anode foil 300 and the cathode foil 200.

[0040] More preferably, the workbench 10 is fixedly connected to a plurality of legs 11 on the side opposite to the lower mold 20, and the legs 11 support the pressing device 100.

[0041] The bottom of the worktable 10 is fixed with five legs 11, one in the center and the other four at the four corners of the rectangular worktable 10. The multi-point support forms a stable structure, which minimizes the vibration of the pressing device 100 during operation and avoids uneven pressure distribution caused by tilting.

[0042] More preferably, the pressing device 100 further includes a pressure regulating valve 60 and an emergency stop button box 70.

[0043] The pressure regulating valve 60 is fixedly connected to the fixing plate 51 and is located on the edge of the fixing plate 51. The emergency stop button box 70 is fixedly connected to the workbench 10 and is located on the side of the workbench 10 away from the support leg 11. The emergency stop button is electrically connected to the hydraulic press 52.

[0044] The pressure regulating valve 60 is typically a proportional regulating valve, installed on the edge of the fixed plate 51, which enables dynamic adjustment of the pressure of the hydraulic press 52 to adapt to different foil thicknesses and pressing processes. The emergency stop button box 70 is directly connected to the control circuit of the hydraulic press 52 through internal wiring. It can be pressed in case of abnormal pressing conditions to quickly respond and cut off the power supply to the hydraulic press 52, enabling the hydraulic press 52 to stop or rise and reset.

[0045] More preferably, the pressing device 100 further includes a time relay 80 and a battery valve assembly 90.

[0046] The time relay 80 is fixedly connected to the workbench 10 and located on the side of the workbench 10 away from the support leg 11, and is arranged side by side with the emergency stop button box 70. The solenoid valve assembly 90 is fixedly connected to the workbench 10 and located on the side of the workbench 10 away from the support leg 11, and on the side of the time relay 80 away from the emergency stop button box 70. The time relay 80 is electrically connected to the hydraulic press 52, and the solenoid valve assembly 90 is electrically connected to the hydraulic press 52.

[0047] The time relay 80 can be set to three segments: pre-pressure, main pressure, and holding pressure. The time relay 80 also has an abnormal interruption function, automatically triggering an emergency stop operation if the pressing time is too long. The battery valve assembly 90 provides power to the entire pressing device 100 to drive the movement of its components.

[0048] In this way, by the cathode foil 200 abutting against the first limiting member 22A on the first alignment plate 22, and the anode foil 300 abutting against the second limiting member 22B on the second alignment plate 23, the cathode foil 200 and the anode foil 300 can be correctly positioned. The cathode foil 200 and anode foil 300 are positioned on the first alignment plate 22 and the second alignment plate 23, thus avoiding inaccurate positioning. Furthermore, the design of the rivet point 24A forming plastic deformation on the cathode foil 200 and anode foil 300 after the upper mold 30 and the lower mold 20 press down allows the cathode foil 200 and anode foil 300 to interlock at the deformation point, further improving the connection stability between the cathode foil 200 and anode foil 300.

[0049] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A bolt-riveting type pressing device for multilayer capacitors, characterized in that, The pressing device includes: The direction perpendicular to the workbench surface is denoted as the first direction; The lower mold is fixedly connected to the worktable. The lower mold includes a support base fixedly connected to the worktable, a first alignment plate fixedly connected to the side of the support base away from the worktable and provided with a first limiting member, a second alignment plate fixedly connected to the side of the first alignment plate away from the support base and provided with a second limiting member, and a riveting pressure member fixedly connected to the support base and passing through the first alignment plate and the second alignment plate in sequence. The upper mold is located on the side of the lower mold that is away from the worktable; The cathode foil is placed on the first alignment plate against the first limiting member, and the anode foil is placed on the second alignment plate against the second limiting member. The projection portions of the cathode foil and the anode foil in the first direction overlap. The riveting pressure member has a plurality of rivet points integrally formed on the side away from the support base, and the projection of the rivet points in the first direction overlaps with the projection portions of the cathode foil and the anode foil in the first direction. When the upper mold presses down on the lower mold to the rivet points, the rivet points compress the cathode foil and the anode foil to form plastic deformation.

2. The bolt-riveting type pressing device for a multilayer capacitor according to claim 1, characterized in that, A first pressure hole is formed through the first alignment plate along the first direction, and a second pressure hole is formed through the second alignment plate along the first direction; When viewed along the first direction, the first pressure hole and the second pressure hole are aligned along the first direction, and the end of the riveting member with the rivet point is located in the first pressure hole and the second pressure hole.

3. The bolt-riveting type pressing device for a multilayer capacitor according to claim 2, characterized in that, The pressing device further includes: A support column, one end of which is fixedly connected to the workbench and extends along the first direction; The pressing mechanism is fixedly connected to the support column and located at the other end of the support column opposite to the worktable.

4. The bolt-riveting type pressing device for a multilayer capacitor according to claim 3, characterized in that, The pressing mechanism includes: A fixing plate is fixedly connected to the support column; A hydraulic press is fixedly connected to the fixed plate on the side opposite to the worktable. The hydraulic press is provided with a push rod extending along the first direction, and the hydraulic press drives the push rod to slide along the first direction.

5. The bolt-riveting type pressing device for a multilayer capacitor according to claim 4, characterized in that, The pressing mechanism also includes: The top plate is fixedly connected to the push rod and is located on the side of the push rod away from the hydraulic press; A first sliding rod extends along a first direction and passes through the fixed plate, and is slidably connected to the fixed plate; One end of the first sliding rod is fixedly connected to the top plate, and the push rod drives the top plate along the first direction. During the movement, the first slide bar slides along the first direction.

6. The bolt-riveting type pressing device for a multilayer capacitor according to claim 5, characterized in that, The upper mold is fixedly connected to the top plate and is located on the side of the top plate opposite to the push rod. The upper mold includes: The pressure block is fixedly connected to the upper mold and is located on the side of the upper mold opposite to the top plate; A buffer component is slidably connected to the upper mold and located on the side of the upper mold opposite to the top plate; The buffer component is fixedly connected to an abutment plate and slidably connected to a second slide rod of the upper mold.

7. The bolt-riveting type pressing device for a multilayer capacitor according to claim 6, characterized in that, The hydraulic press pushes the top plate down, the buffer first abuts against the second alignment plate, and when the hydraulic press continues to press down, the second slide rod slides into the upper mold along the first direction, the pressure block enters the second pressure hole and the first pressure hole in sequence, and pushes the anode foil on the second alignment plate and the cathode foil on the first alignment plate to the rivet point in sequence, and the pressure block presses the anode foil and the cathode foil together with the rivet point.

8. The bolt-riveting type pressing device for a multilayer capacitor according to claim 7, characterized in that, The workbench is fixedly connected to a number of legs on the side away from the lower mold, and the legs support the pressing device.

9. The bolt-riveting type pressing device for a multilayer capacitor according to claim 8, characterized in that, The pressing device further includes: A pressure regulating valve is fixedly connected to the fixing plate and located on the edge of the fixing plate; An emergency stop button box is fixedly connected to the workbench and located on the side of the workbench away from the support legs; The emergency stop button is electrically connected to the hydraulic press.

10. A bolt-riveting type pressing device for a multilayer capacitor according to claim 9, characterized in that, The pressing device further includes: A time relay is fixedly connected to the workbench and located on the side of the workbench away from the support legs, and is arranged side by side with the emergency stop button box; The battery valve assembly is fixedly connected to the workbench and is located on the side of the workbench away from the support legs, and on the side of the time relay away from the emergency stop button box; The time relay is electrically connected to the hydraulic press, and the battery valve assembly is electrically connected to the hydraulic press.

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