A film capacitor, a positioning gold spraying device and a method of using the same

Abstract

The invention relates to the technical field of capacitors, and discloses a film capacitor, a positioning gold spraying device and a use method. The film capacitor comprises a coating layer, and gold spraying layers are arranged at both ends of the coating layer. The positioning gold spraying device comprises a hydraulic telescopic rod, a pressure plate is fixed at the output end of the hydraulic telescopic rod, a driving shaft that can slide up and down is installed at the bottom middle limit of the pressure plate, an electromagnetic locking component matching the driving shaft is nested and assembled on a fixed frame, a gold spraying cylinder corresponding to a clamp is fixed at the bottom end of the driving shaft, gold spraying protection for the film capacitor is realized, and metal atomized particles are prevented from escaping, so as to protect the working environment, and the metal atomized particles dispersed in the gold spraying cylinder are blown toward the film capacitor by gas blowing, so that the metal atomized particles are adsorbed on the gold spraying layer, the loss of metal atomized particles is reduced, and the forming of the gold spraying layer is accelerated.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitors, and in particular to a film capacitor, a positioning gold spraying device and a use method thereof. Background Art

[0002] As is known to all, capacitors are components that store electrical quantity and electrical energy (potential energy), and they play an important role in circuits such as tuning, bypassing, coupling, and filtering.

[0003] The gold spraying machine is a key equipment for manufacturing AC capacitors. The existing gold spraying method of the gold spraying machine is to transport the gold spraying frame filled with capacitor cores to the spraying area through a conveyor chain for spraying, while the gold spraying gun is fixed. Since the arc spraying area is annular, and the size of the capacitor core arrangement in the gold spraying frame cannot exceed the spraying area, this spraying method not only has a low spraying output, but also the edge of the annular spraying area sprayed by the gold spraying gun usually cannot spray the product, resulting in a large waste of spraying raw materials.

[0004] In a positioning gold-spraying device for a thin-film capacitor with application number CN202011472491.1, multiple gold-spraying ends are slidably connected to a first guide rail and a second guide rail, respectively, and the position and height of the gold-spraying ends located on the first guide rail and the second guide rail are adjusted relative to the capacitor located on the conveyor to further improve the flexibility and accuracy of the gold-spraying operation. However, in actual use, when the gold-spraying end corresponds to the capacitor in the horizontal direction but the height does not match, the height is adjusted by rotating the active turntable, which causes the gold-spraying end and the capacitor to be misaligned. This causes incompatibility of the gold-spraying end in the horizontal and height directions, either the horizontal direction does not correspond or the height does not match, and there is a problem of poor matching.

[0005] At the same time, when gold was sprayed on the end faces of the capacitor multiple times, it was found that: one end face was sprayed with gold multiple times first, and then the other end face was sprayed with gold multiple times. During the gold spraying process, the metal spray was very easy to diffuse, which was not only harmful to the human body, but also easy to spray onto the outer surface of the capacitor, resulting in a decrease in the quality of the capacitor's gold spraying. In severe cases, the electrodes of the capacitor would be connected due to excessive gold spraying, which could easily cause the capacitor to short-circuit.

[0006] Based on this, the present invention proposes a thin film capacitor, a positioning gold spraying device and a use method to solve the technical problems existing in the above-mentioned prior art. Summary of the invention

[0007] The object of the present invention is to provide a thin film capacitor, a positioning gold spraying device and a method of use to solve the problems existing in the above-mentioned background technology.

[0008] To achieve the above-mentioned object, the present invention provides a film capacitor, comprising a coating layer, wherein the coating layer comprises a core body arranged at a central position, an energy storage ceramic film arranged in a spiral shape is wrapped and installed on the outer wall of the core body, a resin film of an adapted size is wrapped and installed on the outer wall of the energy storage ceramic film, a metallized film is wrapped and installed on the outer wall of the resin film, the height of the metallized film is greater than the height of the energy storage ceramic film, the energy storage ceramic film and the metallized film are in a state of staggered height, a heat dissipation groove is arranged between the energy storage ceramic film and the metallized film, and the outer side of the metallized film is wrapped with a coating film;

[0009] The rear end of the cladding layer is sprayed with a first gold-sprayed layer, the front end of the cladding layer is sprayed with a second gold-sprayed layer, and the end of the metallized film is nested and assembled in the first gold-sprayed layer and the second gold-sprayed layer.

[0010] Preferably, the first gold spraying layer and the second gold spraying layer are both wrapped at the end of the coating layer, the thickness of the energy storage ceramic film is 30nm-60nm, the thickness of the resin film is 10nm-30nm, and the thickness of the metallized film is 60nm-90nm.

[0011] The present invention also provides a positioning gold spraying device, which is used to perform gold spraying operation on a thin film capacitor, and the thin film capacitor is the thin film capacitor described above.

[0012] Specifically, the positioning gold spraying device includes a base, a fixing frame is fixed on the top of the base, a cooling channel is opened inside the base, a rotating shaft is rotatably mounted on the inner wall of the cooling channel, the end of the rotating shaft is fixedly assembled with a driving motor, four groups of support rods are evenly fixed on the outer wall of the rotating shaft, a positioning plate is fixed on the end of each support rod, a servo motor is fixed on each positioning plate, and a clamp is installed oppositely on each positioning plate;

[0013] A hydraulic telescopic rod is installed on the fixed frame, a pressure plate is fixed on the output end of the hydraulic telescopic rod, a driving shaft that can slide up and down is installed at the bottom middle limit of the pressure plate, an electromagnetic locking assembly matching the driving shaft is nested on the fixed frame, and a gold spraying tube corresponding to the clamp is fixed on the bottom end of the driving shaft.

[0014] Preferably, a pressure-bearing expansion bag mounted on the outer wall of the driving shaft is fixed to the top of the fixing frame, the top of the pressure-bearing expansion bag is fixed to the bottom of the pressure plate, a gold-spraying head is fixed to the top of the inner cavity of the gold-spraying cylinder, a sealing expansion bag is fixed to the bottom of the inner wall of the gold-spraying cylinder, the pressure-bearing expansion bag is connected to the sealing expansion bag through an air supply pipe, a cleaning plate fixed to the inner wall of the gold-spraying cylinder is arranged above the sealing expansion bag, the sealing expansion bag is connected to the cleaning plate through an air guide pipe, and a solenoid valve is fixedly assembled on the air guide pipe.

[0015] Preferably, a distance measuring sensor is fixedly mounted on the gold spray head, the cleaning plates are arranged in four groups and are evenly distributed on the inner wall of the gold spray cylinder, the surface of the cleaning plates is arc-shaped, and the surface of the cleaning plates is sprayed with an anti-sticking coating, the surface of the cleaning plates is evenly provided with air jet holes, and the direction of the air jet holes is facing the center line of the gold spray cylinder, and the cleaning plates are connected to the pressure expansion bag through a branch pipe, and a gas one-way valve is fixedly mounted on the branch pipe.

[0016] Preferably, the sealed expansion bag is an annular bag, and an annular groove is provided on the top surface of the sealed expansion bag.

[0017] Preferably, a fixing cylinder is fixedly sleeved on the outer side wall of the rotating shaft, the four groups of support rods are fixed on the fixing cylinder, the cooling channel runs through from top to bottom, and the hydraulic telescopic rod is fixed on the fixing frame through a fixing rod.

[0018] Preferably, the positioning plate and the support rod are arranged in parallel, the output end of the servo motor is fixedly connected to the positioning plate, a single group of the clamps consists of two and are symmetrically slidably mounted on the positioning plate, and the clamps are driven by an electric slide rail.

[0019] The present invention also provides a method for using the positioning gold spraying device, the steps of the method for using the positioning gold spraying device are as follows:

[0020] S1: When in use, the film capacitor is placed on a positioning plate in a horizontal position by a manipulator, and the clamp clamps the film capacitor at the same time, and then the motor is driven to rotate 90 degrees to transport the film capacitor to the position corresponding to the gold spraying cylinder;

[0021] S2: At this time, the distance sensor in the gold spraying tube detects the distance between the top of the film capacitor and the gold spraying tube, thereby detecting the length of the film capacitor, and then the hydraulic telescopic rod moves down to a position matching the length of the group of film capacitors, so that the gold spraying tube is set outside the film capacitor to achieve gold spraying protection for the film capacitor;

[0022] S3: When the hydraulic telescopic rod moves downward, the pressure plate simultaneously squeezes the pressure expansion bag, and the gas inside the pressure expansion bag is introduced into the sealing expansion bag through the air pipe. The sealing expansion bag expands to clamp the film capacitor and seal the bottom of the gold spraying tube to prevent the metal spray from escaping during gold spraying. Synchronously, after the gas pressure in the sealing expansion bag reaches the clamping pressure threshold, the gas will be introduced into the cleaning plate through the air guide tube and sprayed out, blowing directly towards the film capacitor, blowing the metal atomized particles dispersed in the gold spraying tube towards the film capacitor, reducing the loss of metal atomized particles, and accelerating the formation of the gold spraying layer under the blowing of the gas flow;

[0023] S4: Subsequently, the hydraulic telescopic rod is retracted to drive the gold spraying cylinder to reset. During this process, as the pressure-bearing expansion bag expands, the gas inside the sealed expansion bag flows back to the pressure-bearing expansion bag through the gas transmission pipe. At the same time, the gas inside the gold spraying cylinder passes through the cleaning plate and is introduced into the pressure-bearing expansion bag through the branch pipe. The metal atomized particles in a floating state inside the gold spraying cylinder are adsorbed onto the cleaning plate by the adsorption effect of the cleaning plate, thereby realizing a self-cleaning effect. The flow of airflow is used to accelerate the cooling of the gold spraying layer and improve the cooling efficiency.

[0024] S5: After the gold spraying cylinder is reset, the servo motor drives the positioning plate to rotate 180 degrees, and the above gold spraying operation is repeated again. After the gold spraying of this group of film capacitors is completed, the driving motor drives the shaft to rotate to realize the gold spraying operation of the next group of film capacitors. The film capacitors that have completed the gold spraying operation are rotated into the cooling channel for cooling and forming.

[0025] Technical effects and advantages of the present invention:

[0026] 1. The film capacitor of the present invention includes an energy storage ceramic film and is arranged in a spiral shape, so that the film capacitor has a high dielectric constant and good energy storage performance. The temperature cycling characteristics of the metallized film are good, so that the film capacitor has the advantages of high insulation impedance, excellent frequency characteristics, and low dielectric loss. At the same time, a heat dissipation groove is arranged between the metallized film and the energy storage ceramic film to improve the heat dissipation rate and have high heat resistance.

[0027] 2. The positioning gold spraying device in the present invention realizes the gold spraying protection for the film capacitor, can quickly perform the gold spraying operation on the film capacitor, and will not cause the metal atomized particles to escape, thereby protecting the working environment. In the gold spraying operation, the metal atomized particles scattered in the gold spraying cylinder can be blown toward the film capacitor by gas blowing, which is convenient for adsorbing the metal atomized particles on the gold spraying layer, reducing the loss of metal atomized particles, and accelerating the formation of the gold spraying layer under the flow of gas.

[0028] 3. After the gold spraying is completed, the positioning gold spraying device of the present invention uses the adsorption effect of the cleaning plate to adsorb the metal atomized particles in a floating state inside the gold spraying tube onto the cleaning plate, thereby realizing a self-cleaning effect, and uses the flow of airflow to accelerate the cooling of the gold spraying layer, thereby improving the cooling efficiency of the gold spraying layer. When the metal atomized particles are filtered onto the cleaning plate, they will automatically fall down, and finally fall on the top of the sealed expansion bag for centralized collection, thereby avoiding direct discharge into the working environment, thereby improving environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the film capacitor in the present invention;

[0030] Figure 2 It is a schematic diagram of the local structure of the film capacitor in the present invention;

[0031] Figure 3 This is a schematic diagram of the assembly structure of the core body and the energy storage ceramic film in the present invention;

[0032] Figure 4 This is a schematic diagram of the assembly structure of the core body, energy storage ceramic film and resin film in the present invention;

[0033] Figure 5 It is a schematic diagram of the assembly structure of the core body, energy storage ceramic film, resin film and metallized film in the present invention;

[0034] Figure 6 It is a schematic diagram of the overall structure of the positioning gold spraying device in the present invention;

[0035] Figure 7 It is a schematic diagram of the structure of the positioning component of the positioning gold spraying device in the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the gold spraying component of the positioning gold spraying device in the present invention;

[0037] Fig. 9 It is a schematic diagram of the cross-sectional structure of the gold spraying component of the positioning gold spraying device in the present invention.

[0038] In the figure: 10, coating layer; 11, core body; 12, energy storage ceramic film; 13, resin film; 14, metallized film; 15, heat sink; 16, coating film; 17, first gold spraying layer; 18, second gold spraying layer;

[0039] 20. Base; 21. Fixed frame; 22. Cooling channel; 23. Drive motor; 24. Rotating shaft; 25. Fixed cylinder; 26. Support rod; 27. Positioning plate; 28. Servo motor; 29. ​​Clamp; 30. Fixed rod; 31. Hydraulic telescopic rod; 32. Pressure plate; 33. Drive shaft; 34. Gold spraying cylinder; 35. Pressure expansion bag; 36. Gold spraying head; 37. Sealing expansion bag; 38. Cleaning plate; 39. Air guide tube. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] Embodiment 1:

[0042] like Figure 1-Figure 5 As shown, this embodiment discloses a film capacitor, including a coating layer 10, the coating layer 10 includes a core body 11 arranged at a central position, the outer wall of the core body 11 is wrapped with an energy storage ceramic film 12 arranged in a spiral shape, the outer wall of the energy storage ceramic film 12 is wrapped with a resin film 13 of an adapted size, the outer wall of the resin film 13 is wrapped with a metallized film 14, the height of the metallized film 14 is greater than the height of the energy storage ceramic film 12, the energy storage ceramic film 12 and the metallized film 14 are in a state of staggered height, and a heat dissipation groove 15 is arranged between the energy storage ceramic film 12 and the metallized film 14, and the outer side of the metallized film 14 is wrapped with a coating film 16.

[0043] Please read further Figure 1 The rear end of the coating layer 10 is sprayed with a first gold spray layer 17, the front end of the coating layer 10 is sprayed with a second gold spray layer 18, and the end of the metallized film 14 is nested and assembled in the first gold spray layer 17 and the second gold spray layer 18. The two ends of the coating layer 10 are sprayed with gold by positioning the gold spray device to form a gold spray layer, and the gold spray layer is arranged at both ends of the coating layer 10 to form an electrode.

[0044] Among them, the first gold spraying layer 17 and the second gold spraying layer 18 are both wrapped at the end of the coating layer 10, the thickness of the energy storage ceramic film 12 is 30nm-60nm, the thickness of the resin film 13 is 10nm-30nm, and the thickness of the metallized film 14 is 60nm-90nm. The coating layer 10 is directly wound on the core body 11 by a winding machine for producing the core body 11. The winding operation does not require any additional expenditure. At the same time, the moisture resistance of the film capacitor core is guaranteed, making it suitable for high temperature and humid working environments. At the same time, the coating layer 10 includes the energy storage ceramic film 12 and is The spiral arrangement makes the film capacitor have a high dielectric constant and good energy storage performance. The resin film 13 and the metallized film 14 are both wound on the energy storage ceramic film 12. The dielectric films are firmly bonded to each other and have high reliability, which can promote the film capacitor to develop towards miniaturization, lightness, high integration and multi-function. At the same time, the temperature cycle characteristics of the metallized film 14 are good, so that the film capacitor has the advantages of high insulation impedance, excellent frequency characteristics and low dielectric loss. At the same time, a heat dissipation groove 15 is provided between the metallized film 14 and the energy storage ceramic film 12 to increase the heat dissipation rate and have high heat resistance.

[0045] Embodiment 2:

[0046] like Figure 6-Figure 9 As shown, this embodiment discloses a positioning gold spraying device, which is used to perform gold spraying operation on the thin film capacitor of Example 1.

[0047] Specifically, the positioning gold-spraying device includes a base 20, a fixing frame 21 is fixed on the top of the base 20, a cooling channel 22 is opened inside the base 20, a rotating shaft 24 is rotatably mounted on the inner wall of the cooling channel 22, the end of the rotating shaft 24 is fixedly assembled with a driving motor 23, and four groups of support rods 26 are evenly fixed on the outer wall of the rotating shaft 24, a positioning plate 27 is fixed at the end of each support rod 26, a servo motor 28 is fixed on each positioning plate 27, and a clamp 29 is oppositely installed on each positioning plate 27, the positioning plate 27 and the support rod 26 are arranged in parallel, the output end of the servo motor 28 is fixedly connected to the positioning plate 27, a single group of clamps 29 is two and symmetrically slidably mounted on the positioning plate 27, and the clamp 29 is driven by an electric slide rail, which can drive the clamp 29 to move synchronously when it moves, and then fix the film capacitor on the positioning plate 27, and the servo motor 28 can rotate the positioning plate 27 at an angle when it works, so that the end of the film capacitor and the gold-spraying device are facing each other.

[0048] It should be noted that the positioning gold spraying device also includes a controller, which can realize integrated control of various components of the device.

[0049] A fixed sleeve 25 is fixedly provided on the outer wall of the rotating shaft 24, and four groups of support rods 26 are fixed on the fixed sleeve 25. The cooling channel 22 runs through from top to bottom. In this way, four gold spraying stations can be set up through the four groups of support rods 26. While facilitating gold spraying, the gold-sprayed film capacitor can also be rotated into the cooling channel 22 for cooling, which is convenient for rapid molding of the film capacitor.

[0050] See also Figure 8 A hydraulic telescopic rod 31 is installed on the fixed frame 21, and the hydraulic telescopic rod 31 is fixed to the fixed frame 21 through a fixed rod 30. A pressure plate 32 is fixed to the output end of the hydraulic telescopic rod 31, and a driving shaft 33 that can slide up and down is installed at the bottom middle limit of the pressure plate 32. An electromagnetic locking component matching the driving shaft 33 is nested and assembled on the fixed frame 21, and the driving shaft 33 is slidably sleeved inside the output shaft of the hydraulic telescopic rod 31, and a limit strip matching the driving shaft 33 is provided on the pressure plate 32, so that the driving shaft 33 can only be moved up and down inside the output shaft of the hydraulic telescopic rod 31. The pressure plate 32 can ensure that the driving shaft 33 will not separate from the pressure plate 32. The bottom end of the driving shaft 33 is fixed with a gold spraying cylinder 34 corresponding to the clamp 29. When the film capacitor on the positioning plate 27 is transported to the position corresponding to the gold spraying cylinder 34, the gold spraying cylinder 34 moves under the drive of the hydraulic telescopic rod 31. The gold spraying cylinder 34 is sleeved on the outside of the film capacitor to achieve gold spraying protection for the film capacitor. The operation is convenient and the film capacitor can be quickly sprayed with gold. At the same time, the metal atomized particles will not escape, thereby protecting the working environment.

[0051] See also Figure 8-Figure 9 A pressure expansion bag 35 sleeved on the outer wall of the driving shaft 33 is fixed on the top of the fixing frame 21, and the top of the pressure expansion bag 35 is fixed to the bottom of the pressure plate 32. A gold spraying head 36 is fixed to the top of the inner cavity of the gold spraying cylinder 34, and a sealing expansion bag 37 is fixed to the bottom of the inner wall of the gold spraying cylinder 34. The pressure expansion bag 35 is connected to the sealing expansion bag 37 through an air pipe. A cleaning plate 38 fixed to the inner wall of the gold spraying cylinder 34 is arranged above the sealing expansion bag 37. The sealing expansion bag 37 is connected to the cleaning plate 38 through an air pipe 39 and a cleaning plate 38 fixed to the inner wall of the gold spraying cylinder 34. The cleaning plates 38 are connected, an electromagnetic valve is fixedly mounted on the air guide pipe 39, and a distance measuring sensor is fixedly mounted on the gold spray head 36. The cleaning plates 38 are arranged in four groups and are evenly distributed on the inner wall of the gold spray cylinder 34. The surface of the cleaning plates 38 is arc-shaped, and the surface of the cleaning plates 38 is sprayed with an anti-sticking coating. The surface of the cleaning plates 38 is evenly provided with jet holes, and the direction of the jet holes is facing the center line of the gold spray cylinder 34. The cleaning plates 38 are connected with the pressure expansion bag 35 through a branch pipe, and a gas one-way valve is fixedly mounted on the branch pipe.

[0052] When in use, during the downward movement of the hydraulic telescopic rod 31, the pressure plate 32 simultaneously squeezes the pressure expansion bag 35, so that the gas inside the pressure expansion bag 35 is introduced into the sealed expansion bag 37 through the gas pipe, and the existence of the gas one-way valve prevents the gas inside the pressure expansion bag 35 from being directly introduced into the branch pipe. As the sealed expansion bag 37 expands, it will gradually contact the outer wall of the film capacitor. As the downward movement of the hydraulic telescopic rod 31 increases, the expansion of the sealed expansion bag 37 will increase, and the clamping force on the side wall of the film capacitor will increase. The expansion of 7 can achieve the clamping and fixing of the film capacitor, and can realize the packaging treatment of the coating layer 10 of the film capacitor, so as to avoid the gold spraying layer being sprayed onto the coating layer 10 during the gold spraying operation and affecting the gold spraying quality of the film capacitor, and realize the sealing treatment of the bottom of the gold spraying tube 34 (based on the expansion of the sealing expansion bag 37, there must be a gap between the outer wall of the film capacitor and the sealing expansion bag 37 to facilitate the circulation of gas. Therefore, the sealing treatment mentioned here is not a completely sealed state, but a state that is relatively sealed but still able to achieve air circulation) to prevent the metal spray from directly escaping during gold spraying.

[0053] When the gas pressure in the sealing expansion bag 37 reaches the clamping pressure threshold, the electromagnetic locking assembly is actuated to fix the drive shaft 33, so that the position of the gold spraying cylinder 34 no longer moves, and the clamping position of the film capacitor is also fixed. At this time, the gold spraying head 36 starts the gold spraying operation, and the hydraulic telescopic rod 31 continues to move downward. At this time, the pressure plate 32 no longer drives the drive shaft 33 to move, and the drive shaft 33 slides inside the pressure plate 32 and the output shaft of the hydraulic telescopic rod 31 to ensure the continuous downward pressure of the hydraulic telescopic rod 31, so that the sealing expansion bag 37 is closed. When the gas pressure in the bag 37 reaches the clamping pressure threshold, the solenoid valve opens, and the internal gas will be introduced into the cleaning plate 38 through the air duct 39 and sprayed out, blowing directly towards the film capacitor, and the atomized particles sprayed by the gold spray head 36 will be suspended in the gold spray cylinder 34. In this way, the metal atomized particles scattered in the gold spray cylinder 34 can be blown toward the film capacitor by the gas blowing, which is convenient for adsorbing the metal atomized particles on the gold spray layer, reducing the loss of metal atomized particles, and at the same time, under the flow of gas blowing, accelerating the formation of the gold spray layer.

[0054] It is worth mentioning that during the gas spraying process, since the interior of the gold spraying cylinder 34 is in a relatively sealed state, the flow of gas will cause the gas inside the gold spraying cylinder 34 to carry metal atomized particles through the gap between the film capacitor and the sealed expansion bag 37. At this time, the metal atomized particles will gather and solidify on the outer wall of the film capacitor and the gold spraying layer based on the squeezing force between the film capacitor and the sealed expansion bag 37, and will not be dispersed in the working environment, thereby improving environmental protection.

[0055] The hydraulic telescopic rod 31 will continue to move downward until the gold spraying is completed, and then the hydraulic telescopic rod 31 will begin to retract. During this process, the pressure expansion bag 35 will slowly expand, and the gas inside the sealed expansion bag 37 will flow back to the pressure expansion bag 35 through the gas pipe. In the process of the pressure expansion bag 35 slowly resetting and expanding, the gas inside the gold spraying cylinder 34 passes through the cleaning plate 38 and then flows into the pressure expansion bag 35 through the branch pipe. In this way, the gas inside the gold spraying cylinder 34 and the gas inside the sealed expansion bag 37 will enter the pressure expansion bag 35 synchronously, thereby increasing the resetting speed of the pressure expansion bag 35. In this way, the gas inside the gold spraying cylinder 34 will flow, because the flow direction of the gas is from the inside of the gold spraying cylinder 34 to the inside of the cleaning plate 38 Therefore, negative pressure will be generated on the outer surface of the cleaning plate 38 based on the flow of gas, so it has an adsorption effect. The metal atomized particles in a floating state inside the gold spraying cylinder 34 are adsorbed onto the cleaning plate 38 along with the flow of gas by the adsorption effect, so as to realize the self-cleaning effect inside the gold spraying cylinder 34, and utilize the flow of airflow to accelerate the cooling of the gold spraying layer, thereby improving the cooling efficiency of the gold spraying layer. The sealed expansion bag 37 is an annular bag, and an annular groove is provided on the top surface of the sealed expansion bag 37. Since the surface of the cleaning plate 38 has an anti-sticking coating, the metal atomized particles will automatically fall down when filtered onto the cleaning plate 38, and finally fall on the top of the sealed expansion bag 37 for centralized collection, thereby avoiding direct discharge into the working environment.

[0056] It is worth mentioning that when the hydraulic telescopic rod 31 begins to retract, the electromagnetic locking assembly is closed, at which time the drive shaft 33 is disengaged from the limit, and the gas inside the sealing expansion bag 37 begins to gradually decrease, and the film capacitor can be disengaged from the clamping. When the pressure plate 32 at the output end of the hydraulic telescopic rod 31 and the top of the drive shaft 33 coincide to achieve the limit, the drive shaft 33 will be driven to move up and reset, and then the gold spraying cylinder 34 will be reset, which is convenient for the next gold spraying operation.

[0057] After the gold spraying cylinder 34 is reset, the servo motor 28 drives the positioning plate 27 to rotate 180 degrees and repeats the above-mentioned gold spraying operation. After the gold spraying operation is completed at both ends of the film capacitor under this workstation, the driving motor 23 drives the rotating shaft 24 to rotate to realize the gold spraying operation of the next group of film capacitors. The film capacitors after the gold spraying operation are rotated into the cooling channel 22 for cooling and forming.

[0058] Embodiment 3:

[0059] This embodiment discloses a method for using a positioning gold spraying device, and the specific steps include:

[0060] S1: When in use, the film capacitor is placed on the positioning plate 27 in a horizontal position by a manipulator, and the clamp 29 clamps the film capacitor, and then the driving motor 23 rotates 90 degrees to transport the film capacitor to a position corresponding to the gold spraying cylinder 34;

[0061] S2: At this time, the distance sensor in the gold spraying cylinder 34 detects the distance between the top of the film capacitor and the gold spraying cylinder 34, thereby detecting the length of the film capacitor, and then the hydraulic telescopic rod 31 moves down to a position matching the length of the group of film capacitors, so that the gold spraying cylinder 34 is sleeved on the outside of the film capacitor to achieve gold spraying protection for the film capacitor;

[0062] S3: When the hydraulic telescopic rod 31 moves downward, the pressure plate 32 simultaneously squeezes the pressure expansion bag 35, and the gas inside the pressure expansion bag 35 is introduced into the sealing expansion bag 37 through the gas pipe. The sealing expansion bag 37 expands to clamp the film capacitor, and seals the bottom of the gold spraying cylinder 34 to prevent the metal spray from escaping during gold spraying. Synchronously, after the gas pressure in the sealing expansion bag 37 reaches the clamping pressure threshold, the gas will be introduced into the cleaning plate 38 through the air guide pipe 39 and sprayed out, blowing directly towards the film capacitor, blowing the metal atomized particles dispersed in the gold spraying cylinder 34 towards the film capacitor, reducing the loss of metal atomized particles, and accelerating the formation of the gold spraying layer under the blowing of the gas flow;

[0063] S4: Subsequently, the hydraulic telescopic rod 31 retracts to drive the gold spraying cylinder 34 to reset. During this process, as the pressure expansion bag 35 expands, the gas inside the sealed expansion bag 37 flows back to the pressure expansion bag 35 through the gas pipe. At the same time, the gas inside the gold spraying cylinder 34 passes through the cleaning plate 38 and is introduced into the pressure expansion bag 35 through the branch pipe. The metal atomized particles in the floating state inside the gold spraying cylinder 34 are adsorbed onto the cleaning plate 38 by the adsorption effect of the cleaning plate 38, thereby realizing a self-cleaning effect, and utilizing the flow of airflow to accelerate the cooling of the gold spraying layer and improve the cooling efficiency.

[0064] S5: After the gold spraying cylinder 34 is reset, the servo motor 28 drives the positioning plate 27 to rotate 180 degrees, and the above gold spraying operation is repeated again. After the gold spraying of this group of film capacitors is completed, the driving motor 23 drives the rotating shaft 24 to rotate to realize the gold spraying operation of the next group of film capacitors. The film capacitors after the gold spraying operation are rotated into the cooling channel 22 for cooling and forming.

[0065] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning gold spraying device for film capacitors, characterized in that: The invention comprises a base (20), a fixing frame (21) is fixed on the top of the base (20), a cooling channel (22) is provided inside the base (20), a rotating shaft (24) is rotatably mounted on the inner wall of the cooling channel (22), the end of the rotating shaft (24) is fixedly mounted to a driving motor (23), four groups of supporting rods (26) are evenly fixed on the outer wall of the rotating shaft (24), a positioning plate (27) is fixed on the end of each supporting rod (26), a servo motor (28) is fixed on each positioning plate (27), and a clamp (29) is installed opposite to each positioning plate (27); A hydraulic telescopic rod (31) is mounted on the fixed frame (21), a pressure plate (32) is fixed to the output end of the hydraulic telescopic rod (31), a driving shaft (33) that can slide up and down is mounted at the bottom middle limit of the pressure plate (32), an electromagnetic locking assembly that matches the driving shaft (33) is nested and assembled on the fixed frame (21), and a gold spraying cylinder (34) corresponding to the clamp (29) is fixed to the bottom end of the driving shaft (33); A pressure-bearing expansion bag (35) sleeved on the outer wall of the driving shaft (33) is fixed to the top of the fixing frame (21); the top of the pressure-bearing expansion bag (35) is fixed to the bottom of the pressure plate (32); a gold-spraying head (36) is fixed to the top of the inner cavity of the gold-spraying cylinder (34); a sealing expansion bag (37) is fixed to the bottom of the inner wall of the gold-spraying cylinder (34); the pressure-bearing expansion bag (35) is connected to the sealing expansion bag (37) via an air pipe; a cleaning plate (38) fixed to the inner wall of the gold-spraying cylinder (34) is arranged above the sealing expansion bag (37); the sealing expansion bag (37) is connected to the cleaning plate (38) via an air guide pipe (39); and a solenoid valve is fixedly mounted on the air guide pipe (39); The gold spray head (36) is fixedly equipped with a distance measuring sensor, the cleaning plates (38) are arranged in four groups and are evenly distributed on the inner wall of the gold spray cylinder (34), the surface of the cleaning plates (38) is arc-shaped, and the surface of the cleaning plates (38) is sprayed with an anti-sticking coating, the surface of the cleaning plates (38) is evenly provided with gas injection holes, and the direction of the gas injection holes is directly opposite to the center line position of the gold spray cylinder (34), and the cleaning plates (38) are connected to the pressure expansion bag (35) through a branch pipe, and a gas check valve is fixedly equipped on the branch pipe; The sealed expansion bag (37) is an annular bag, and the top surface of the sealed expansion bag (37) is provided with an annular groove; A fixed sleeve (25) is fixedly sleeved on the outer wall of the rotating shaft (24), the four groups of support rods (26) are fixed on the fixed sleeve (25), the cooling channel (22) is connected vertically, and the hydraulic telescopic rod (31) is fixed on the fixed frame (21) via a fixed rod (30); The positioning plate (27) and the support rod (26) are arranged in parallel, the output end of the servo motor (28) is fixedly connected to the positioning plate (27), a single set of the clamps (29) consists of two clamps symmetrically slidably mounted on the positioning plate (27), and the clamps (29) are driven by an electric slide rail.

2. A method for using the positioning gold spraying device according to claim 1, characterized in that: The specific steps include: S1: The film capacitor is placed on a positioning plate (27) in a horizontal position by a manipulator, and the clamp (29) is operated to clamp the film capacitor, and then the motor (23) is driven to rotate 90 degrees to transport the film capacitor to a position corresponding to the gold spraying cylinder (34); S2: At this time, the distance sensor in the gold spraying cylinder (34) detects the distance between the top of the film capacitor and the gold spraying cylinder (34), thereby detecting the length of the film capacitor, and then the hydraulic telescopic rod (31) moves down to a position matching the length of the film capacitor, and the gold spraying cylinder (34) is sleeved on the outside of the film capacitor to achieve gold spraying protection for the film capacitor; S3: When the hydraulic telescopic rod (31) moves downward, the pressure plate (32) simultaneously squeezes the pressure expansion bag (35), and the gas inside the pressure expansion bag (35) is introduced into the sealing expansion bag (37) through the gas pipe. The sealing expansion bag (37) expands to clamp the film capacitor and seal the bottom of the gold spraying cylinder (34) to prevent the metal spray from escaping during gold spraying. Synchronously, after the gas pressure in the sealing expansion bag (37) reaches the clamping pressure threshold, the gas is introduced into the cleaning plate (38) through the air guide tube (39) and sprayed out, blowing directly toward the film capacitor, blowing the metal atomized particles dispersed in the gold spraying cylinder (34) toward the film capacitor, reducing the loss of the metal atomized particles, and accelerating the formation of the gold spraying layer under the blowing of the gas flow; S4: The hydraulic telescopic rod (31) retracts to drive the gold spraying cylinder (34) to reset. During this process, as the pressure-bearing expansion bag (35) expands, the gas inside the sealed expansion bag (37) flows back to the pressure-bearing expansion bag (35) through the gas transmission pipe. At the same time, the gas inside the gold spraying cylinder (34) passes through the cleaning plate (38) and is introduced into the pressure-bearing expansion bag (35) through the branch pipe. The metal atomized particles in a floating state inside the gold spraying cylinder (34) are adsorbed onto the cleaning plate (38) by the adsorption effect of the cleaning plate (38), thereby achieving a self-cleaning effect. The flow of airflow is used to accelerate the cooling of the gold spraying layer, thereby improving the cooling efficiency. S5: After the gold spraying cylinder (34) is reset, the servo motor (28) drives the positioning plate (27) to rotate 180 degrees, and the above-mentioned S1-S4 operations are repeated again. After the gold spraying of the film capacitor is completed, the driving motor (23) drives the rotating shaft (24) to rotate to realize the gold spraying operation of the next film capacitor. The film capacitor after the gold spraying operation is completed is rotated into the cooling channel (22) for cooling and forming.

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