Capacitor automatic lamination machine

Abstract

The application relates to the technical field of laminating machines, in particular to an automatic capacitor laminating machine. The technical scheme comprises a carrying system, an electrostatic adsorption plate, a sealed lamination system and a sealing connection structure. The sealed lamination system is composed of a lower base, an upper base and a valve structure, the valve structure divides the sealed lamination system into a lamination area and a vacuum forming area, the outer side of the electrostatic adsorption plate is provided with the sealing connection structure, the electrostatic adsorption plate adopts the electrostatic adsorption principle to grab the diaphragm, and reliable adsorption force can be maintained in the vacuum environment. When working, the electrostatic adsorption plate enters the vacuum forming area, is sealed and vacuumized, the valve structure is opened, the electrostatic adsorption plate enters the lamination area to complete diaphragm lamination, returns to the vacuum forming area after lamination is completed, and the valve structure is closed to keep the lamination area in a vacuum state. The application maintains a vacuum environment throughout, eliminates air flow disturbance from the root, effectively prevents diaphragm deviation and wrinkles, and improves lamination precision and yield.

Description

Technical Field

[0001] This invention relates to the field of stacking machine technology, and more particularly to an automatic capacitor stacking machine. Background Technology

[0002] Automatic capacitor stacking machines are specialized equipment used to automatically cut, position, and stack dielectric films printed with electrode patterns. They are widely used in the production of electronic components such as multilayer ceramic capacitors, film capacitors, and supercapacitors. In the stacking process of multilayer ceramic capacitors, the dielectric film is typically only a few micrometers thick, extremely lightweight, and has very low rigidity, making it highly sensitive to airflow in the surrounding environment.

[0003] Traditional wafer stacking machines typically operate in an atmospheric environment. When the suction plate approaches or separates from the stacking table, its high-speed movement compresses or draws in the surrounding air, creating localized airflow disturbances. This generates airflow impacts on the surface of the wafer stack. This can easily cause the stacked wafers to shift or wrinkle, leading to misalignment of the internal electrodes and directly affecting the capacitance accuracy and product yield of the capacitor. Summary of the Invention

[0004] The purpose of this application is to address the problems existing in the background technology by proposing an automatic capacitor stacking machine that eliminates the impact of airflow disturbance on diaphragms from the root.

[0005] The technical solution of this application: An automatic capacitor stacking machine, comprising a conveying system that moves along the X, Y, and Z axes, wherein the conveying system is equipped with an electrostatic adsorption plate for adsorbing the films to be stacked, and further comprising:

[0006] A sealing disc system installed inside the working area of ​​the handling system includes a fixedly installed lower base and an upper base, with a connection gap between the lower base and the upper base. The sealing disc system also includes a valve structure for sealing the connection gap.

[0007] The valve structure and the lower base form a stacking area for accommodating the stacking stage for stacking operations, and the valve structure and the upper base form a vacuum forming area.

[0008] A sealing connection structure installed on the outside of the electrostatic adsorption plate on the handling system is used to seal the opening of the vacuum forming zone when the electrostatic adsorption plate enters the vacuum forming zone.

[0009] A vacuum system, connected to the vacuum forming zone, is used to evacuate the vacuum forming zone after the electrostatic adsorption plate enters the vacuum forming zone and completes the sealing connection;

[0010] The specific configuration is as follows: after the vacuum forming zone completes the evacuation, the valve structure opens, the electrostatic adsorption plate drives the diaphragm into the stacking zone to complete the stacking, after the stacking is completed, the stacking zone returns to the vacuum forming zone, and the valve structure closes to maintain the vacuum state of the lower cavity.

[0011] Optionally, the volume of the vacuum forming zone is configured to accommodate only the minimum space required to hold the electrostatic adsorption plate and its vertical movement stroke, with a gap between the inner wall of the vacuum forming zone and the edge of the electrostatic adsorption plate.

[0012] Optionally, the conveying system includes an X-axis drive assembly, a Y-axis drive assembly mounted on the X-axis drive assembly, and a Z-axis drive assembly mounted on the Y-axis drive assembly. A drive shaft is mounted on the Z-axis drive assembly, and the electrostatic adsorption plate is fixedly connected to the drive shaft.

[0013] Optionally, the sealing connection structure includes multiple telescopic rods rotatably mounted on the drive shaft, a pressure plate rotatably mounted on the other end of the multiple telescopic rods, a linear motor with a self-locking function rotatably mounted between the pressure plate and the drive shaft, and a tapered corrugated pipe with a length that can be telescopically adjusted is sealed and fixedly mounted between the drive shaft and the pressure plate.

[0014] Optionally, the bottom of the pressure plate is provided with a connecting groove, the upper base is provided with a protruding ring that mates with the connecting groove, and a sealing gasket is installed in the connecting groove.

[0015] Optionally, the valve structure includes two valve plates installed inside the connection gap to seal the connection gap. A connecting block is fixedly installed on the valve plate. The connecting block is slidably connected to the lower base through a slide rail assembly. A push rod motor corresponding to each connecting block is fixedly installed on one side of the lower base. The output shaft of the push rod motor is fixedly connected to the connecting block.

[0016] Optionally, a vacuum box is fixedly installed on the outside of the lower base and the upper base. The vacuum box is sealed to the lower base and the upper base and covers the connection gap. The vacuum box is in a vacuum state.

[0017] Optionally, the upper base is provided with multiple connection holes communicating with the vacuum forming zone, and a connecting pipe is fixedly installed on each of the multiple connection holes. A connecting ring is connected and fixedly installed on the multiple connecting pipes, and multiple suction pipes are connected to the connecting ring. The suction pipes are connected to the vacuum system.

[0018] Multiple pressure relief pipes are fixedly installed on the connecting ring, and electrically controlled valves are fixedly installed on the pressure relief pipes.

[0019] Optionally, the connecting ring is connected to multiple sets of vacuum auxiliary modules. Each vacuum auxiliary module includes a vacuum cylinder fixedly installed on one side of the upper base and a sealing plate that slides and is connected inside the vacuum cylinder. The sealing plate and one side of the vacuum cylinder form an auxiliary cavity. The auxiliary cavity is connected to the connecting ring through a gas supply pipe, and a solenoid valve is fixedly installed on the gas supply pipe.

[0020] Optionally, a one-way valve is fixedly installed at one end of the auxiliary chamber. The one-way valve is connected to the auxiliary chamber and allows gas to be discharged from the auxiliary chamber in one direction. A hydraulic rod is fixedly installed on one side of the vacuum cylinder, and the output shaft of the hydraulic rod is fixedly connected to the sealing plate.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] This application sets up a sealed box and divides it into upper and lower cavities, so that the lower cavity containing the stacked membranes is kept in a vacuum state throughout the stacking process, which completely eliminates the problem of airflow disturbance from the root, effectively prevents the micron-level membranes from shifting and wrinkling, and significantly improves the stacking accuracy and product yield.

[0023] By adopting a sealing connection structure with a conical bellows, a non-contact seal between the electrostatic adsorption plate and the cavity is achieved. The sealing force is not transmitted to the electrostatic adsorption plate, ensuring that the positioning accuracy of the electrostatic adsorption plate is not affected by the sealing operation.

[0024] By setting up a vacuum auxiliary module, the pre-prepared auxiliary vacuum chamber is used to quickly evacuate air during the stacking process. Multiple modules work and prepare alternately to form a continuous relay-style rapid evacuation guarantee, which further shortens the evacuation time of the upper cavity and effectively solves the bottleneck of vacuum efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the material handling system.

[0026] Figure 2 A schematic diagram showing the location of the sealing disc system and the sealing connection structure;

[0027] Figure 3 Schematic diagram of a sealed connection structure Figure 1 ;

[0028] Figure 4 Schematic diagram of a sealed connection structure Figure 2 ;

[0029] Figure 5 Schematic diagram of a sealed connection structure Figure 3 ;

[0030] Figure 6 Schematic diagram of the sealing stack system Figure 1 ;

[0031] Figure 7 Schematic diagram of the sealing stack system Figure 2 ;

[0032] Figure 8 Schematic diagram of the sealing stack system Figure 3 ;

[0033] Figure 9 for Figure 8 A magnified view of a section at point A in the middle;

[0034] Figure 10 This is a schematic diagram showing the location of the valve structure;

[0035] Figure 11 This is a schematic diagram showing the positions of the lower base and the upper base;

[0036] Figure 12 This is a structural diagram of the valve.

[0037] Figure 13 This is a schematic diagram of the vacuum-assisted module.

[0038] Reference numerals: 1. Conveying system; 11. X-axis drive assembly; 12. Y-axis drive assembly; 13. Z-axis drive assembly; 131. Drive shaft; 2. Electrostatic adsorption plate; 3. Sealing stacking system; 31. Lower base; 311. Stacking area; 32. Upper base; 321. Vacuum forming area; 322. Connecting hole; 323. Protruding ring; 33. Connecting gap; 34. Valve structure; 341. Valve plate; 342. Slide rail assembly; 343. Connecting block; 34 4. Push rod motor; 35. Vacuum box; 36. Connecting pipe; 361. Connecting ring; 362. Suction pipe; 363. Pressure relief pipe; 37. Vacuum auxiliary module; 371. Vacuum cylinder; 372. Sealing plate; 373. Auxiliary chamber; 374. Gas supply pipe; 375. Solenoid valve; 376. Check valve; 377. Hydraulic rod; 4. Sealing connection structure; 41. Telescopic rod; 42. Pressure plate; 421. Connecting groove; 43. Linear motor; 44. Conical corrugated pipe. Detailed Implementation

[0039] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] Example 1

[0041] like Figures 1 to 4As shown, this application proposes an automatic capacitor stacking machine, including a transport system 1 that moves along the X, Y, and Z axes. The transport system 1 is equipped with an electrostatic adsorption plate 2 for adsorbing films to be stacked. Specifically, the transport system 1 includes an X-axis drive assembly 11, a Y-axis drive assembly 12 mounted on the X-axis drive assembly, and a Z-axis drive assembly 13 mounted on the Y-axis drive assembly 12. A drive shaft 131 is mounted on the Z-axis drive assembly 13. The electrostatic adsorption plate 2 is fixedly connected to the drive shaft 131. The Z-axis drive assembly 13 can drive the drive shaft 131 to move up and down along the Z-axis. Through the coordinated operation of the X-axis drive assembly 11, the Y-axis drive assembly 12, and the Z-axis drive assembly 13, the electrostatic adsorption plate 2 can be transferred between the film cutting station and the stacking station.

[0042] The electrostatic adsorption plate 2 uses the principle of electrostatic adsorption to adsorb the membrane. Thin film electrodes are embedded on its working surface. By applying a DC bias voltage to the thin film electrodes, an electric field is formed between the suction plate and the membrane. The membrane is polarized under the action of the electric field and generates electrostatic adsorption force, thereby realizing reliable gripping of the membrane in a vacuum environment. This avoids the problem of traditional vacuum suction cups failing in a vacuum environment due to lack of air pressure difference.

[0043] like Figures 1 to 11 As shown, the stacking machine in this embodiment also includes a sealed stacking system 3 installed inside the working area of ​​the conveying system 1. The sealed stacking system 3 includes a fixedly installed lower base 31 and an upper base 32. A connection gap 33 is provided between the lower base 31 and the upper base 32. The sealed stacking system 3 also includes a valve structure 34 that seals the connection gap 33. A stacking area 311 is formed between the valve structure 34 and the lower base 31 for accommodating the stacking table for stacking. A vacuum forming area 321 is formed between the valve structure 34 and the upper base 32. By setting the valve structure 34, the interior of the sealed stacking system 3 is divided into two areas with independently controllable air pressure. When the valve structure 34 is closed, the stacking area 311 can always maintain a vacuum state, fundamentally eliminating the airflow disturbance caused by the movement of the electrostatic adsorption plate 2 squeezing or sucking air. This effectively prevents the stacked micron-sized films from shifting or wrinkling due to airflow impact, significantly improving stacking accuracy and product yield.

[0044] Furthermore, the aforementioned stacking machine also includes a sealing connection structure 4 installed on the outside of the electrostatic adsorption plate 2 on the conveying system 1. This structure is used to seal the opening of the vacuum forming zone 321 when the electrostatic adsorption plate 2 enters the vacuum forming zone 321. When the electrostatic adsorption plate 2 descends to a predetermined position, the sealing connection structure 4 cooperates with the upper part of the upper base 32 to form a seal, making the vacuum forming zone 321 a closed space. This provides a structural basis for subsequent vacuuming operations. At the same time, the sealing connection structure 4 adopts a non-contact design, and the sealing force is not transmitted to the electrostatic adsorption plate 2, ensuring that the positioning accuracy of the electrostatic adsorption plate 2 is not affected by the sealing operation.

[0045] Furthermore, the vacuum system also includes a vacuum pumping system connected to the vacuum forming zone 321. After the electrostatic adsorption plate 2 enters the vacuum forming zone 321 and completes the sealing connection, the vacuum forming zone 321 is evacuated. The vacuum pumping system extracts the air in the vacuum forming zone 321 so that its air pressure is consistent with the air pressure in the stacked plate area 311 below, thus ensuring the vacuum level inside the stacked plate area 311.

[0046] Specifically, the workflow is as follows: After the vacuum forming zone 321 completes the evacuation, the valve structure 34 opens, and the electrostatic adsorption plate 2 drives the diaphragm into the stacking zone 311 to complete the stacking. After the stacking is completed, the stacking zone 311 returns to the vacuum forming zone 321, and the valve structure 34 closes to maintain the vacuum state of the lower cavity. During the entire stacking cycle, the stacking zone 311 is always kept in a vacuum state except for the moment when the electrostatic adsorption plate 2 enters and exits, which eliminates the generation of airflow disturbance from the root and ensures that the stacking of each diaphragm is carried out in a stable environment without airflow interference, thus ensuring the consistency and reliability of the stacking positioning.

[0047] It is worth noting that the volume of the vacuum forming zone 321 is configured to accommodate only the minimum space required for the electrostatic adsorption plate 2 and its vertical movement stroke. The inner wall of the vacuum forming zone 321 has a gap with the edge of the electrostatic adsorption plate 2. By minimizing the volume of the vacuum forming zone 321, the time required for each vacuuming can be significantly shortened, enabling the vacuuming operation to match the production cycle of high-speed stacking, while reducing the energy consumption and gas consumption of the vacuuming system and improving the overall production efficiency.

[0048] like Figures 3 to 5 and Figure 9 As shown, in this embodiment, the sealing connection structure 4 includes multiple telescopic rods 41 fixedly and rotatably mounted on the drive shaft 131, and a pressure plate 42 rotatably mounted on the other end of the multiple telescopic rods 41. A linear motor 43 with a self-locking function is rotatably mounted between the pressure plate 42 and the drive shaft 131. A tapered corrugated pipe 44 with a length that can be telescopically adjusted is sealed and fixedly mounted between the drive shaft 131 and the pressure plate 42. The multiple telescopic rods 41 are evenly distributed in the circumferential direction of the drive shaft 131, and their two ends are rotatably connected, which can position the pressure plate 42 axially and ensure that the pressure plate 42 and the electrostatic adsorption plate 2 remain coaxial.

[0049] The height of the pressure plate 42 can be adjusted by controlling the length of the linear motor 43. When the linear motor 43 is in a self-locking state, its length is locked and the position of the pressure plate 42 is fixed, which can prevent the pressure plate 42 from shaking or shifting. When the linear motor 43 is released from self-locking, the pressure plate 42 can move freely with the drive shaft 131, so that when the drive shaft 131 continues to move down to send the electrostatic adsorption plate 2 into the stacking area 311, the pressure plate 42 will not be interfered with.

[0050] The tapered bellows 44 forms a retractable sealing connection between the pressure plate 42 and the drive shaft 131. When the pressure plate 42 is pressed down to seal, the tapered bellows 44 extends accordingly. When the pressure plate 42 is raised, the tapered bellows 44 is compressed accordingly, thus maintaining a sealed state.

[0051] Furthermore, the bottom of the pressure plate 42 is provided with a connecting groove 421, and the upper base 32 is provided with a protruding ring 323 that cooperates with the connecting groove 421. A sealing gasket is installed in the connecting groove 421. When the pressure plate 42 descends to contact the upper base 32, the protruding ring 323 is embedded in the connecting groove 421 and fits tightly with the sealing gasket to form a sealing surface, thereby achieving a reliable seal of the top opening of the vacuum forming area 321 and preventing external air from seeping in and affecting the vacuum level during vacuuming.

[0052] like Figures 7 to 11 As shown, in this embodiment, the valve structure 34 includes two valve plates 341 installed inside the connection gap 33 to block the connection gap 33. A connecting block 343 is fixedly installed on the valve plate 341. The connecting block 343 is slidably connected to the lower base 31 through the slide rail assembly 342. A push rod motor 344 corresponding to the connecting block 343 is fixedly installed on one side of the lower base 31. The output shaft of the push rod motor 344 is fixedly connected to the connecting block 343. The push rod motor 344 pushes the connecting block 343 to move horizontally along the slide rail assembly 342, which drives the two valve plates 341 to move synchronously. When the two valve plates 341 come into contact with each other and close, the connection gap 33 can be blocked, thereby isolating the stacked plate area 311 from the vacuum forming area 321.

[0053] When the two valve plates 341 move away from each other, the connection gap 33 is opened, the stacked plate area 311 is connected to the vacuum forming area 321, and the slide rail assembly 342 provides guidance and support for the movement of the valve plates 341.

[0054] It is worth noting that in this embodiment, the valve plate 341 is placed horizontally and adopts a horizontal opening and closing movement mode. During the opening and closing process, the valve plate 341 only moves in the horizontal direction and does not occupy vertical space, which can effectively reduce the height dimension of the vacuum forming area 321, further reduce the volume of the vacuum forming area 321, and speed up the vacuuming speed. A vacuum box 35 is fixedly installed on the outside of the lower base 31 and the upper base 32. The vacuum box 35 is sealed to the lower base 31 and the upper base 32 and covers the connection gap 33 inside. The vacuum box 35 is in a vacuum state. When the two valve plates 341 move away from each other and the connection gap 33 is in the open state, the connection gap 33 is directly exposed to the internal space of the vacuum box 35 rather than the external atmospheric environment. Since the vacuum box 35 maintains a vacuum state, the opening of the connection gap 33 will not cause the stacked plate area 311 and the vacuum forming area 321 to communicate with the atmosphere, thereby avoiding vacuum failure. The vacuum box 35 is equipped with a pressure sensor and connected to an air pump system to monitor and control the vacuum degree inside the vacuum box 35 in real time to ensure that it is always within the specified vacuum range.

[0055] Please see Figure 8 and Figure 9 As shown in this embodiment, the upper base 32 is provided with multiple connecting holes 322 that communicate with the vacuum forming zone 321. Each of the multiple connecting holes 322 is fixedly installed with a connecting pipe 36. A connecting ring 361 is connected and fixedly installed on the multiple connecting pipes 36. Multiple suction pipes 362 are connected to the connecting ring 361. The suction pipes 362 are connected to the vacuum system. The vacuum system evacuates the vacuum forming zone 321 through the suction channel formed by the multiple suction pipes 362, the connecting ring 361, the connecting pipes 36 and the connecting holes 322. The parallel suction of multiple channels can improve the suction efficiency and shorten the vacuum time.

[0056] Among them, multiple pressure relief pipes 363 are fixedly installed on the connecting ring 361, and an electric control valve is fixedly installed on the pressure relief pipe 363. When the stacking is completed, the electrostatic adsorption plate 2 needs to rise back to the vacuum forming area 321. If the vacuum forming area 321 is still in a vacuum state, the electrostatic adsorption plate 2 needs to overcome atmospheric pressure to rise, which causes a large load on the Z-axis drive assembly 13.

[0057] By setting up a pressure relief pipe 363 and an electrically controlled valve, after the electrostatic adsorption plate 2 rises above the valve plate 341 and the valve plate 341 is closed, the electrically controlled valve is opened to allow external air to enter the vacuum forming zone 321 through the pressure relief pipe 363, eliminating the internal negative pressure, so that the electrostatic adsorption plate 2 and the pressure plate 42 can be easily raised, reducing the energy consumption and mechanical wear of the Z-axis drive assembly 13.

[0058] Working principle: First, the transport system 1 moves the electrostatic adsorption plate 2 to the film cutting station. The electrostatic adsorption plate 2 grabs the film to be stacked by electrostatic adsorption. Then, the transport system 1 transfers the electrostatic adsorption plate 2 together with the film to the top of the sealing stacking system 3. The Z-axis drive assembly 13 drives the electrostatic adsorption plate 2 to descend. When the electrostatic adsorption plate 2 enters the vacuum forming zone 321, the linear motor 43 retracts and drives the pressure plate 42 to press down, so that the protruding ring 323 is embedded in the connecting groove 421 to complete the sealing connection. The conical bellows 44 is compressed and maintains the internal seal.

[0059] At this time, the vacuum system evacuates the vacuum forming zone 321 through the suction pipe 362, so that the air pressure in the vacuum forming zone 321 is consistent with that in the stacking zone 311. After the vacuuming is completed, the push rod motor 344 drives the two valve plates 341 to separate horizontally, the connection gap 33 is opened, the stacking zone 311 is connected to the vacuum forming zone 321, and the Z-axis drive assembly 13 continues to drive the electrostatic adsorption plate 2 to descend into the stacking zone 311, completing the stacking action of the membranes;

[0060] After stacking is completed, the electrostatic adsorption plate 2 rises back to the vacuum forming zone 321, and the push rod motor 344 drives the valve plate 341 to close and seal the connection gap 33, restoring the stacking zone 311 to an independent vacuum state. Subsequently, the electrically controlled valve on the pressure relief pipe 363 opens, filling the vacuum forming zone 321 with air to eliminate the negative pressure. The linear motor 43 extends and pushes the pressure plate 42 to rise, releasing the seal. The electrostatic adsorption plate 2 is then removed to begin the cycle of picking up and placing the next diaphragm.

[0061] Example 2

[0062] like Figure 13 As shown, based on Example 1, relying solely on the vacuum system to evacuate the vacuum forming zone 321, each stacking cycle requires a complete evacuation process. When the stacking speed requirement is high, the vacuum system has a large workload and a long evacuation time, which may become a bottleneck limiting the stacking efficiency.

[0063] To address the above issues, in this embodiment, multiple sets of vacuum auxiliary modules 37 are connected to the connecting ring 361. Each vacuum auxiliary module 37 includes a vacuum cylinder 371 fixedly mounted on one side of the upper base 32 and a sealing plate 372 slidably connected inside the vacuum cylinder 371. The sealing plate 372 and one side of the vacuum cylinder 371 form an auxiliary cavity 373. The auxiliary cavity 373 is connected to the connecting ring 361 via a gas supply pipe 374. A solenoid valve 375 is fixedly mounted on the gas supply pipe 374. By setting multiple sets of vacuum auxiliary modules 37, each set can be used alternately during the lamination process. When a certain set of auxiliary cavities 373 has been evacuated and is in standby mode... When the electrostatic adsorption plate 2 is sealed, the corresponding solenoid valve 375 can be opened immediately. The pressure difference between the auxiliary chamber 373 and the vacuum forming zone 321 is used to instantly draw a large amount of gas in the vacuum forming zone 321 into the auxiliary chamber 373, realizing rapid pre-vacuuming and greatly shortening the evacuation time of the vacuum forming zone 321. Multiple auxiliary chambers 373 can work and prepare in turn. When one auxiliary chamber 373 participates in evacuation, the other auxiliary chambers 373 have completed evacuation or are preparing for evacuation, forming a continuous relay-style rapid evacuation guarantee, so that the evacuation speed of the vacuum forming zone 321 matches the high-speed stacking cycle, effectively improving the stacking efficiency.

[0064] Furthermore, a one-way valve 376 is fixedly installed at one end of the auxiliary chamber 373. The one-way valve 376 is connected to the auxiliary chamber 373 and allows gas to be discharged from the auxiliary chamber 373 in one direction. A hydraulic rod 377 is fixedly installed on one side of the vacuum cylinder 371. The output shaft of the hydraulic rod 377 is fixedly connected to the sealing plate 372. The hydraulic rod 377 can drive the sealing plate 372 to reciprocate within the vacuum cylinder 371. When the hydraulic rod 377 pushes the sealing plate 372 to squeeze the auxiliary chamber 373, the gas in the auxiliary chamber 373 is compressed, the pressure increases, and the gas is discharged from the auxiliary chamber 373 through the one-way valve 376.

[0065] When the hydraulic rod 377 pulls the sealing plate 372 to expand the volume of the auxiliary chamber 373, the auxiliary chamber 373 cannot obtain external gas replenishment because the one-way valve 376 does not allow gas to flow in the reverse direction. This creates a low-pressure vacuum state inside the auxiliary chamber 373, preparing for the next auxiliary pumping.

[0066] In this embodiment, before the stacking cycle begins, the hydraulic rod 377 drives the sealing plate 372 to complete at least one evacuation and degassing action, so that a vacuum reserve is formed in each auxiliary chamber 373. When the electrostatic adsorption plate 2 enters the vacuum forming zone 321 and completes the sealing, the suction pipe 362 of the vacuum system starts to evacuate the air. At the same time, the solenoid valve 375 opens, and the auxiliary chamber 373, which has been prepared for vacuum, is connected to the vacuum forming zone 321. Under the drive of the air pressure difference, the gas in the vacuum forming zone 321 quickly rushes into the auxiliary chamber 373 to achieve auxiliary rapid evacuation.

[0067] Once the gas pressure in the auxiliary chamber 373 is balanced with that in the vacuum forming zone 321, the solenoid valve 375 closes, and the hydraulic rod 377 drives the sealing plate 372 again to discharge the gas in the auxiliary chamber 373 through the one-way valve 376, re-establishing a vacuum reserve for the next use. Through the coordinated work of the vacuum auxiliary module 37 and the vacuum pumping system, the pumping time in the vacuum forming zone 321 is significantly shortened, accelerating the cycle time of the entire vacuum chamber stacking process, meeting the requirements of large-scale production for stacking efficiency, while maintaining the core technological advantage of full vacuum in the lower stacking zone 311 and eliminating airflow disturbance.

[0068] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An automatic capacitor stacking machine, comprising a transport system (1) that moves along the X, Y, and Z axes, wherein the transport system (1) is equipped with an electrostatic adsorption plate (2) for adsorbing films to be stacked, characterized in that, Also includes: A sealing plate system (3) installed inside the working area of ​​the handling system (1) includes a lower base (31) and an upper base (32) that are fixedly installed. A connection gap (33) is provided between the lower base (31) and the upper base (32). The sealing plate system (3) also includes a valve structure (34) that seals the connection gap (33). The valve structure (34) and the lower base (31) form a stacking area (311) for accommodating the stacking stage for stacking, and the valve structure (34) and the upper base (32) form a vacuum forming area (321). A sealing connection structure (4) installed on the outside of the electrostatic adsorption plate (2) on the handling system (1) is used to seal the opening of the vacuum forming zone (321) when the electrostatic adsorption plate (2) enters the vacuum forming zone (321); A vacuum system, connected to the vacuum forming zone (321), is used to evacuate the vacuum forming zone (321) after the electrostatic adsorption plate (2) enters the vacuum forming zone (321) and completes the sealing connection; The specific configuration is as follows: after the vacuum forming zone (321) completes the vacuuming, the valve structure (34) opens, the electrostatic adsorption plate (2) drives the diaphragm into the stacking zone (311) to complete the stacking. After the stacking is completed, the stacking zone (311) returns to the vacuum forming zone (321), and the valve structure (34) closes to maintain the vacuum state of the lower cavity.

2. The automatic capacitor stacking machine according to claim 1, characterized in that, The volume of the vacuum forming zone (321) is configured to accommodate only the minimum space required for the electrostatic adsorption plate (2) and its vertical movement stroke, and a gap is left between the inner wall of the vacuum forming zone (321) and the edge of the electrostatic adsorption plate (2).

3. The automatic capacitor stacking machine according to claim 1, characterized in that, The transport system (1) includes an X-axis drive assembly (11), a Y-axis drive assembly (12) mounted on the X-axis drive assembly, and a Z-axis drive assembly (13) mounted on the Y-axis drive assembly (12). A drive shaft (131) is mounted on the Z-axis drive assembly (13), and the electrostatic adsorption plate (2) is fixedly connected to the drive shaft (131).

4. The automatic capacitor stacking machine according to claim 3, characterized in that, The sealed connection structure (4) includes multiple telescopic rods (41) fixedly and rotatably mounted on the drive shaft (131), and a pressure plate (42) rotatably mounted on the other end of the multiple telescopic rods (41). A linear motor (43) with a self-locking function is rotatably mounted between the pressure plate (42) and the drive shaft (131). A tapered corrugated pipe (44) with a length that can be extended and fixedly mounted between the drive shaft (131) and the pressure plate (42) is sealed and fixedly mounted.

5. The automatic capacitor stacking machine according to claim 4, characterized in that, The bottom of the pressure plate (42) is provided with a connecting groove (421), and the upper base (32) is provided with a protruding ring (323) that cooperates with the connecting groove (421). A sealing gasket is installed in the connecting groove (421).

6. The automatic capacitor stacking machine according to claim 1, characterized in that, The valve structure (34) includes two valve plates (341) installed inside the connection gap (33) and sealing the connection gap (33). A connecting block (343) is fixedly installed on the valve plate (341). The connecting block (343) is slidably connected to the lower base (31) through a slide rail assembly (342). A push rod motor (344) corresponding to the connecting block (343) is fixedly installed on one side of the lower base (31). The output shaft of the push rod motor (344) is fixedly connected to the connecting block (343).

7. The automatic capacitor stacking machine according to claim 1, characterized in that, A vacuum box (35) is fixedly installed on the outside of the lower base (31) and the upper base (32). The vacuum box (35) is sealed to the lower base (31) and the upper base (32) and covers the connection gap (33). The vacuum box (35) is in a vacuum state.

8. The automatic capacitor stacking machine according to claim 1, characterized in that, The upper base (32) is provided with a plurality of connection holes (322) communicating with the vacuum forming zone (321). A connecting pipe (36) is fixedly installed on each of the plurality of connection holes (322). A connecting ring (361) is connected and fixedly installed on the plurality of connecting pipes (36). A plurality of suction pipes (362) are connected to the connecting ring (361). The suction pipes (362) are connected to the vacuum system. Multiple pressure relief pipes (363) are fixedly installed on the connecting ring (361), and an electrically controlled valve is fixedly installed on the pressure relief pipe (363).

9. An automatic capacitor stacking machine according to claim 8, characterized in that, Multiple sets of vacuum auxiliary modules (37) are connected to the connecting ring (361). The vacuum auxiliary module (37) includes a vacuum cylinder (371) fixedly installed on one side of the upper base (32) and a sealing plate (372) that slides and is connected inside the vacuum cylinder (371). The sealing plate (372) and one side of the vacuum cylinder (371) form an auxiliary cavity (373). The auxiliary cavity (373) is connected to the connecting ring (361) through a gas supply pipe (374). A solenoid valve (375) is fixedly installed on the gas supply pipe (374).

10. An automatic capacitor stacking machine according to claim 9, characterized in that, A one-way valve (376) is fixedly installed at one end of the auxiliary chamber (373). The one-way valve (376) is connected to the auxiliary chamber (373) and allows gas to be discharged from the auxiliary chamber (373) in one direction. A hydraulic rod (377) is fixedly installed on one side of the vacuum cylinder (371). The output shaft of the hydraulic rod (377) is fixedly connected to the sealing plate (372).

Images