Capacitor formed foil multi-stage oxidation treatment device and process thereof

Abstract

The invention belongs to the technical field of capacitor electrode foil manufacturing, and discloses a capacitor formed foil multi-stage oxidation treatment device and a capacitor formed foil multi-stage oxidation treatment process, the device comprises multi-stage formation tanks which are arranged in sequence, cleaning mechanisms are arranged among the multi-stage formation tanks, the device further comprises a transmission mechanism used for transmitting formed foil, and the transmission mechanism comprises transmission rollers. The transmission rollers are arranged in an up-and-down staggered mode, and the formed foil sequentially penetrates through the transmission rollers; the head end of the formed foil is wound around the driving roller, and the driving roller is used for winding and tightening the formed foil; the inclining assembly is used for inclining the transmission roller and the driving roller; according to the scheme, the transmission roller and the driving roller drive formed foil to incline through the inclination assembly, so that water and formed liquid flow from high to low and are prevented from being accumulated on the two sides of the transmission roller; the problem that water accumulates on the two sides of a transmission roller in an existing formed foil cleaning device is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of capacitor formed foil manufacturing, and specifically relates to a capacitor formed foil multi-stage oxidation treatment device and process thereof. Background Art

[0002] Referring to the background technology of the existing publication (announcement) number CN115198330B, electrolytic capacitors are one of the three basic components of the electronics industry. They are known for their large capacitance per unit volume, small size, light weight and low price. They are mainly used for tuning, filtering, bypassing, coupling, energy storage and conversion, etc.

[0003] Electrode foil is the most critical component of aluminum electrolytic capacitors. It is formed by etching or laminating foils, and it affects the capacitor's capacity, volume, leakage, loss, ripple resistance, equivalent impedance, withstand voltage, and temperature characteristics. Formed foil is made by electrochemically or chemically etching a specially prepared, high-purity foil to expand its surface area, followed by electrochemical formation to form an oxide film (aluminum oxide). Based on voltage, formed foil is generally categorized into four types: ultra-low voltage, low voltage, medium-high voltage, and high voltage. Thickness ranges from 25 to 110 microns. Based on application, there are positive and negative foils, as well as conductive foils.

[0004] Referring to the existing publication (announcement) number CN115198330A, a multi-stage chemical processing device and method for medium- and high-pressure chemical foil is disclosed. The device comprises a primary chemical forming tank, a secondary chemical forming tank, a tertiary chemical forming tank, a quaternary chemical forming tank, a middle treatment tank and a post-treatment tank arranged in sequence, and also comprises a cleaning mechanism, which comprises a water tank, a cleaning roller and a collecting tank, wherein the collecting tank is located between the primary chemical forming tank and the secondary chemical forming tank; a transfer roller is provided in the collecting tank, and the position of the transfer roller is lower than that of the cleaning roller; the cleaning roller is provided with a cleaning hole, and the cleaning roller is provided with a connecting rod, an elastic member and a sealing block for blocking the cleaning hole, the connecting rod is coaxially connected to the cleaning roller, and the sealing block is connected to the connecting rod by the elastic member, and the sealing block is a magnetic sealing block; the water tank is fixed on a frame, and the water outlet of the water tank is located on the right side of the cleaning roller, and the water tank is also provided with a magnet for opening the cleaning hole.

[0005] The above-mentioned device provides a cleaning function to the conveyor rollers, allowing for rapid cleaning of the chemical foil. However, after the chemical foil passes through the chemical tank, residual chemical liquid remains on the chemical foil. Although two sets of cleaning rollers are provided to clean the chemical foil, the foil needs to be stretched in a V-shaped configuration for transport. This causes the water sprayed from the cleaning rollers to flow along the inclined surface to the left and right sides of the drive roller between the two sets of cleaning rollers. Furthermore, because the drive rollers are arranged horizontally, as the cleaning process continues, the residual chemical liquid on the chemical foil is washed away. This water, containing the chemical liquid, flows along with the water flow and accumulates on both sides of the drive rollers. This causes the concentration of the chemical liquid in the liquid on both sides of the drive rollers to gradually increase, reducing the cleaning effect. Furthermore, the accumulation of water on both sides of the drive rollers can affect the stability of the chemical foil during transport, causing it to slip or deviate easily. Summary of the Invention

[0006] The purpose of this solution is to provide a multi-stage oxidation treatment device for capacitor formed foil to solve the problem of water accumulation on both sides of the transmission roller in the existing formed foil cleaning device.

[0007] In order to achieve the above-mentioned object, the present invention provides a multi-stage oxidation treatment device for capacitor formed foil, comprising a primary forming tank, a secondary forming tank, a tertiary forming tank, a quaternary forming tank, an intermediate treatment tank and a post-treatment tank arranged in sequence, a cleaning mechanism being provided between the primary forming tank and the secondary forming tank, and a transmission mechanism for transmitting the formed foil, the transmission mechanism comprising: Transmission rollers, the number of which is several and staggered up and down, and the formed foil passes through the transmission rollers in sequence; a driving roller, the head end of the formed foil passes around the driving roller, and the driving roller is used to wind and tighten the formed foil; A tilting assembly is provided, wherein the tilting assembly is used to tilt the transmission roller and the driving roller.

[0008] The principle of this solution is that the driving roller and the transmission roller drive the formed foil through the primary forming tank, the cleaning mechanism, the secondary forming tank, the tertiary forming tank, the quaternary forming tank, the intermediate treatment tank, and the post-treatment tank for multi-stage oxidation treatment and cleaning. During the transmission of the formed foil, the tilting assembly tilts the transmission roller and the driving roller, thereby changing the state of the formed foil during transmission, that is, from horizontal transmission to tilted transmission. As the formed foil passes through the transmission roller between the primary forming tank and the cleaning mechanism, even if water and the forming liquid flow to the sides of the transmission roller, the tilted state of the transmission roller and the formed foil allows the water and the forming liquid to flow from high to low, rather than accumulating on the sides of the transmission roller.

[0009] The effects of this solution are as follows: (1) The transmission roller and the driving roller are tilted by the tilting component, thereby changing the state of the chemical foil during the transmission process, from the original horizontal transmission to the tilted state transmission. In this way, even if water and chemical liquid flow to the sides of the transmission roller, they will flow from high to low due to the tilted state, avoiding accumulation on both sides of the transmission roller, solving the problem of water accumulation on both sides of the transmission roller in the existing chemical foil cleaning device, and reducing the increase in chemical liquid concentration and the deterioration of the cleaning effect caused by water accumulation. (2) The tilted transmission of the chemical foil improves the stability of the chemical foil during the transmission process, reduces the sliding or deviation caused by water accumulation, and thus improves the operating efficiency and product quality of the entire chemical foil multi-stage oxidation treatment device.

[0010] Furthermore, the tilting assembly includes an inclined frame, and the transmission roller and the driving roller are respectively arranged on the frame.

[0011] The principle and effect of this solution is that by tilting the entire frame, the transmission roller and the driving roller are tilted synchronously, so that the chemical foil is conveyed by the tilted transmission roller and driving roller, and the structure is simple without adding other structural features.

[0012] Furthermore, the tilting assembly includes a horizontal frame and a carrier plate arranged on the frame, a hydraulic cylinder is provided in the carrier plate, and the hydraulic cylinder is electrically connected to a controller; the bearings at both ends of the transmission roller and the driving roller are respectively provided with a first support plate and a second support plate, the free end of the second support plate is rotatably connected to the carrier plate, the piston rod of the hydraulic cylinder is in contact with the free end of the first support plate, and the hydraulic cylinder is used to push the first support plate to rotate around the connection point between the second support plate and the carrier plate through the telescopic action of the piston rod to adjust the tilt angle of the transmission roller and the driving roller.

[0013] The principle and effect of this solution are as follows: (1) The previous solution causes uneven force on the transmission roller and the driving roller by tilting the entire frame, causing part of the roller surface to be subjected to greater pressure, thereby aggravating the wear of the roller surface. Moreover, since the chemical foil is always in the same tilt direction, when the chemical foil passes through the cleaning mechanism, the water will flow along the inclined surface of the chemical foil before it flows a certain distance on the chemical foil, that is, the distance that the water flows on the chemical foil becomes shorter, which will inevitably lead to the use of more water to tilt the chemical foil. (2) The frame in this solution is in a horizontal state. During the process of transmitting the chemical foil, the controller controls the piston rod of the hydraulic cylinder to extend, pushing the first support plate to rotate around the connection point between the second support plate and the carrier plate, causing the transmission roller (driving roller) to tilt to the left (right); then the controller controls the piston rod of the hydraulic cylinder to retract, and the first support plate loses the resistance of the piston rod, causing the first support plate to rotate in the opposite direction around the connection point between the second support plate and the carrier plate, thereby causing the transmission roller (driving roller) to tilt to the right (left). Finally, the drive roller and transmission roller are simultaneously tilted, with one end high and the other low. This causes the transmission and drive rollers to tilt alternately left and right, which in turn causes the forming foil to tilt alternately left and right. This prevents the transmission and drive rollers from always being stressed on one side, reducing wear on the roller surfaces. Furthermore, this alternating tilting ensures the foil constantly changes its tilt direction during transport, allowing water to flow farther across the foil, effectively cleaning the forming liquid on the foil while reducing water consumption.

[0014] Furthermore, it also includes a return mechanism provided on the transmission roller, the return mechanism includes a movable rod and a latch, the latch is fixedly inserted into the movable rod, the outer wall of the transmission roller is provided with a guide groove that cooperates with the latch, the movable rod is rotatably connected to the first support plate and the second support plate, and both ends of the movable rod pass through the first support plate and the second support plate, two groups of push switches are symmetrically provided on the frame, the two ends of the movable rod are used to contact the push switches respectively, and the push switches are electrically connected to the controller.

[0015] The principle and effect of this solution are as follows: the guide groove, latch and movable rod arranged on the outer wall of the transmission roller form a cylindrical cam structure, so that when the transmission roller is rotating to convey the formed foil, the latch moves back and forth along the guide groove and drives the movable rod to move back and forth, so that the two ends of the movable rod touch the push switch when moving to the maximum stroke, so that the controller controls the piston rod of the hydraulic cylinder to extend and retract, that is, after the left end of the movable rod touches one of the push switches, the controller controls the piston rod of the hydraulic cylinder to extend, and after the right end of the movable rod touches the other push switch, the controller controls the piston rod of the hydraulic cylinder to retract, thereby controlling the transmission roller and the driving roller to tilt alternately.

[0016] Furthermore, both ends of the movable rods located in the primary forming tank, the secondary forming tank, the tertiary forming tank, the quaternary forming tank, the intermediate processing tank and the post-processing tank are connected to extension rods, and the free ends of the extension rods are used to resist the press switch.

[0017] The principle and effect of this solution are: providing an extension rod to avoid placing the touch switch in the formation tank and the treatment tank, so as to prevent the liquid in the tank from corroding the push switch.

[0018] Furthermore, the return mechanism also includes a return spring, which is passed through the movable rod of the transmission roller, and the two ends of the return spring are fixedly connected to the support plate and the pin respectively; the free length of the return spring is greater than half the height of the transmission roller.

[0019] The principle and effect of this solution are as follows: (1) In the prior art, the chemical foil is wound and tightened by the driving roller at the head end during the transmission process, and the transmission roller does not have a direct driving source, but only assists the transmission. This results in the driving roller needing to stop after the chemical foil has collected a certain number of rolls, and then the chemical foil collected on the driving roller is removed and processed. After the driving roller stops rotating, since the transmission roller is generally not equipped with a brake device, the transmission roller will continue to rotate slightly due to inertia, which will cause the tension distribution of the chemical foil to be uneven and loose. Moreover, since the texture of the chemical foil is relatively soft, wrinkles will form on the front and back piles of the chemical foil, thereby affecting the flatness and quality of the chemical foil. (2) In this solution, during the normal rotation of the driving roller and the transmission roller, the force of the transmission roller's rotation is greater than the rebound force of the return spring, so that the latch will compress the tension spring during the reciprocating motion, which will not affect the normal transmission of the chemical foil. After the driving roller stops rotating, the transmission roller loses the external force, and the return spring drives the latch to reset. Since the free length of the return spring is greater than half the height of the transmission roller, the latch drives the transmission roller to rotate slightly in the opposite direction, so that the originally relaxed chemical foil is tightened again to avoid wrinkles in the chemical foil.

[0020] Furthermore, the piston rod of the hydraulic cylinder is initially in a fully retracted position.

[0021] The principle and effect of this solution are as follows: after the drive roller and transmission roller stop rotating, the movable rod does not touch the push switch, so the drive roller and transmission roller will return to a horizontal state. However, after the shutdown, water and formation liquid will still be on the formation foil, causing water and formation liquid to accumulate on both sides of the transmission roller. Therefore, after the shutdown, the drive roller and transmission roller need to be tilted to drain the water. In this solution, because the piston rod of the hydraulic cylinder is naturally fully retracted, the first support plate is lower than the second support plate, which in turn causes the drive roller and transmission roller to be tilted after the shutdown.

[0022] Furthermore, the frame is provided with a guide groove, and the first support plate is slidably arranged in the guide groove; the guide groove is used to guide the first support plate to rotate around the connection point between the second support plate and the carrier plate.

[0023] The principle and effect of this solution are as follows: the limiting groove is used to provide positioning and guiding functions for the movement of the first support plate, thereby preventing the first support plate from being dislocated or misaligned during the movement process.

[0024] A multi-stage oxidation treatment process for capacitor formed foil, using the multi-stage oxidation treatment device for capacitor formed foil as described above, comprises the following steps: Step S10: soaking the expanded foil in a wetting dispersion; Step S20: cleaning the front and back surfaces of the formed foil by a cleaning mechanism; Step S30: driving the formed foil through the primary forming tank, the secondary forming tank, the tertiary forming tank, the quaternary forming tank, the intermediate treatment tank and the post-treatment tank in sequence through the transmission mechanism; Step S40: transferring the formed foil to a primary forming tank for primary forming treatment; Step S50: cleaning the front and back surfaces of the formed foil by a cleaning mechanism; Step S60: transferring the formed foil to a secondary forming tank for secondary forming treatment; Step S70: cleaning the front and back surfaces of the formed foil by a cleaning mechanism; Step S80: transferring the formed foil to a three-stage forming tank for three-stage forming treatment; Step S90: transporting the formed foil to 300° C. for high temperature heat treatment for 4-20 minutes; Step S100: transferring the formed foil to a four-stage forming tank for four-stage forming treatment; Step S110: transferring the formed foil to another production line for intermediate processing and post-processing.

[0025] Furthermore, the step S30 specifically includes the following steps: Step S31: Passing the head end of the formed foil around a plurality of transmission rollers in sequence, and winding the formed foil around the driving roller to be tightened; Step S32: starting the driving roller to rotate, and in cooperation with the transmission roller, the driving roller drives the formed foil to pass through the primary forming tank, the cleaning mechanism, the secondary forming tank, the cleaning mechanism, the tertiary forming tank, the quaternary forming tank, the intermediate treatment tank, and the post-treatment tank in sequence; Step S33: As the driving roller and the transmission roller rotate, the movable rod moves back and forth, compressing the return spring. When the movable rod moves to its maximum stroke, it touches the press switch, thereby controlling the extension and retraction of the piston rod of the hydraulic cylinder, thereby causing the transmission roller and the driving roller to drive the formed foil to tilt left and right. Step S34: After the driving roller collects the formed foil of a fixed length, the driving roller stops rotating, and the return spring drives the latch to return to the initial position, so that the latch drives the driving roller to rotate 5° in the opposite direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a multi-stage oxidation treatment device for capacitor foil of the present invention. Figure 1 ; Figure 2 It is a structural schematic diagram of the tilting assembly of the present invention; Figure 3 This is a schematic diagram of the structure of a multi-stage oxidation treatment device for capacitor foil of the present invention. Figure 2 ; Figure 4 It is a structural schematic diagram of the impurity removal mechanism of the present invention.

[0027] The reference numerals in the drawings of the specification include: primary forming tank 1, secondary forming tank 2, cleaning mechanism 3, transmission mechanism 4, transmission roller 41, tilting assembly 42, carrier plate 421, hydraulic cylinder 422, first support plate 423, second support plate 424, press switch 425, extension rod 426, forming foil 5, return mechanism 6, movable rod 61, latch 62, return spring 63, impurity removal tank 7, impurity removal mechanism 8, electromagnet 81, permanent magnet 82, support rod 83, connecting rod 84. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the concept and technical effects of the present invention in conjunction with the embodiments to fully understand the purpose, features and effects of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention: Example 1: See also Figure 1 A multi-stage oxidation treatment device for capacitor formed foil comprises a primary forming tank 1, a secondary forming tank 2, a tertiary forming tank, a quaternary forming tank, a quintuple forming tank, a sixth forming tank, a seventh forming tank, a mid-processing tank, and a post-processing tank, arranged in sequence. A cleaning mechanism 3 is provided between the primary forming tank 1 and the secondary forming tank 2, and a corresponding cleaning structure 3 is provided between the secondary forming tank 2 and the tertiary forming tank. The primary forming tank 1, the secondary forming tank 2, the tertiary forming tank, the quaternary forming tank, the quintuple forming tank, the sixth forming tank, the seventh forming tank, the mid-processing tank, the post-processing tank, and the cleaning structure 3 are all prior art and will not be described in detail herein. For details, please refer to CN115198330A, a multi-stage forming treatment device and method for medium- and high-voltage formed foil.

[0029] See also Figure 1 and Figure 2The machine also includes a frame (not shown) and a transmission mechanism 4 mounted on the frame. The transmission mechanism 4 includes transmission rollers 41, a drive roller (not shown), and a tilting assembly 42. There are multiple transmission rollers 41, which are staggered vertically. The drive roller is located at the front end of all transmission rollers 41. The leading end of the formed foil 5 passes through the multiple transmission rollers 41 arranged vertically, forming a "V"-shaped structure. A section of the leading end of the formed foil 5 is then wrapped around the drive roller to tighten and collect the formed foil 5. The tilting assembly 42 is used to tilt the transmission rollers 41 and the drive rollers.

[0030] The specific working principle is as follows: the driving roller and the transmission roller 41 drive the chemical foil 5 through the primary chemical tank 1, the cleaning mechanism 3, the secondary chemical tank 2, the cleaning mechanism 3, the tertiary chemical tank, the quaternary chemical tank, the fifth chemical tank, the sixth chemical tank, the seventh chemical tank, the intermediate treatment tank, and the post-treatment tank in a multi-stage oxidation treatment and cleaning process. During the transmission of the chemical foil 5, the tilting component 2 tilts the transmission roller 41 and the driving roller, thereby changing the state of the chemical foil 5 during transmission, that is, from horizontal transmission to tilted transmission. As the chemical foil 5 passes through the transmission roller 41 between the primary chemical tank 1 and the cleaning mechanism 3, even if water and the chemical liquid flow to both sides of the transmission roller 41, because the transmission roller 41 and the chemical foil 5 are both in the tilted state, the water and the chemical liquid can flow from high to low instead of accumulating on both sides of the transmission roller 41.

[0031] The tilting assembly 42 includes a tilted frame, that is, the frame is tilted at a certain angle to the ground, for example, 30 degrees. The transmission roller 41 and the driving roller are respectively arranged on the frame, so that the transmission roller 41 and the driving roller are tilted at a 30-degree angle to the ground, thereby tilting the chemical foil 5 by 30 degrees, making it difficult for water and chemical liquid to accumulate on the transmission roller 41.

[0032] Please continue reading Figure 2, a more preferred tilting assembly 42 includes a horizontally arranged frame and a carrier plate 421 arranged on the frame, a hydraulic cylinder 422 is provided in the carrier plate 421, and the hydraulic cylinder 422 is electrically connected to the controller; the bearings at both ends of the transmission roller 41 and the driving roller are respectively provided with a first support plate 423 and a second support plate 424, and the free end of the second support plate 424 is rotatably connected to the carrier plate 421, and a limiting groove (not shown in the figure) is provided on the frame, which is a prior art and is used to guide the first support plate 423 to rotate around the connection point between the second support plate 424 and the carrier plate 421, the piston rod of the hydraulic cylinder 422 contacts the free end of the first support plate 423, and the hydraulic cylinder 422 is used to push the first support plate 423 to rotate around the connection point between the second support plate 424 and the carrier plate 421 through the telescopic action of the piston rod to adjust the tilt angle of the transmission roller 41 and the driving roller. The piston rod of the hydraulic cylinder 422 is in a fully retracted position in the initial state (natural state), so that the first support plate 423 is lower than the second support plate 424, thereby preventing water and chemical liquid from accumulating on both sides of the driving roller 41 after shutdown.

[0033] The specific operating principle is as follows: During the transport of the formed foil 5, the controller controls the piston rod of the hydraulic cylinder 422 to extend, pushing the first support plate 423 to rotate about the connection point between the second support plate 424 and the carrier plate 421, causing the transmission roller 41 (driving roller) to tilt leftward. The controller then controls the piston rod of the hydraulic cylinder 422 to retract, removing the piston rod's resistance to the first support plate 423. This causes the first support plate 423 to rotate in the opposite direction about the connection point between the second support plate 424 and the carrier plate 421, thereby tilting the transmission roller 41 (driving roller) to the right. Finally, the ends of the driving roller 41 are simultaneously raised, with one end higher than the other. This causes the ends of the driving roller 41 and the driving roller to tilt alternately left and right, which in turn causes the forming foil 5 to tilt alternately left and right. This prevents the driving roller 41 and the driving roller from being constantly subjected to force on one side, reducing wear on the roller surfaces. Furthermore, this alternating tilting ensures that the forming foil 5 continuously changes its tilt direction during transport, allowing water to flow a longer distance along the forming foil 5, effectively cleaning the forming liquid on the forming foil 5 and reducing water consumption.

[0034] Please continue reading Figure 2, also includes a return mechanism 6 provided on the transmission roller 41, the return mechanism 6 includes a movable rod 61 and a latch 62, the latch 62 is fixedly penetrated on the movable rod 61, the outer wall of the transmission roller 41 is provided with a guide groove 411 which cooperates with the latch 62, the guide groove 411, the latch 62 and the transmission roller 41 constitute a cylindrical cam structure, the movable rod 61 is rotatably connected to the first support plate 423 and the second support plate 424, and both ends of the movable rod 61 pass through the first support plate 423 and the second support plate 424, two groups of press switches 425 are symmetrically provided on the frame, the two ends of the movable rod 61 are respectively used to resist the press switch 425, and the press switch 425 is electrically connected to the controller. It should be noted that both ends of the movable rod 61 located in the primary forming tank 1, the secondary forming tank 2, the tertiary forming tank, the quaternary forming tank, the intermediate processing tank, and the post-processing tank are connected to extension rods 426. The free ends of the extension rods 426 are used to contact the push switches 425 to prevent the liquid in the tank from corroding the push switches 425. A return spring 63 is also installed on the movable rod 61, and the two ends of the return spring 63 are fixedly connected to the support plate 424 and the latch 62 respectively. The free length of the return spring 63 is greater than half the height of the transmission roller 41, that is, the length of the return spring 63 in its natural state exceeds half the height of the transmission roller 41. The elastic force of the return spring 63 needs to be set to be less than the force of the rotation of the transmission roller 41, so that the return spring 63 does not affect the rotation of the transmission roller 41 under normal circumstances.

[0035] The specific working principle is as follows: when the transmission roller 41 is rotating while conveying the formed foil 5, the latch 62 reciprocates along the guide groove 411, compressing or stretching the return spring 63, and driving the movable rod 61 to reciprocate, so that the two ends of the movable rod 61 (or the free end of the extension rod 426) touch the push switch 425 when moving to the maximum stroke, so that the controller controls the piston rod of the hydraulic cylinder 422 to extend and retract, that is, after the left end of the movable rod 61 touches one of the push switches 425, the controller controls the piston rod of the hydraulic cylinder 422 to extend; after the right end of the movable rod 61 touches the other push switch 425, the controller controls the piston rod of the hydraulic cylinder 422 to retract, thereby controlling the transmission roller 41 and the two ends of the driving roller to tilt alternately. After the driving roller stops rotating, the transmission roller 41 loses the external force, and the return spring 63 drives the latch 62 to return along the guide groove 411. Since the free length of the return spring 63 is greater than half the height of the transmission roller 41, the latch 62 drives the transmission roller 41 to rotate slightly in the opposite direction, so that the originally relaxed chemical foil 5 is tightened again to prevent the chemical foil 5 from wrinkling.

[0036] To better implement the above device, this embodiment further provides a multi-stage oxidation treatment process for capacitor formed foil, including a capacitor formed foil multi-stage oxidation treatment device, including the following steps: Step S10: soaking the corroded and expanded foil 5 in a wetting dispersion; Step S20: cleaning the front and back surfaces of the formed foil 5 by the cleaning mechanism 3; Step S30: driving the formed foil 5 through the transmission mechanism 4 in sequence through the primary forming tank 1, the secondary forming tank 2, the tertiary forming tank, the quaternary forming tank, the intermediate treatment tank and the post-treatment tank; Step S40: transporting the formed foil 5 to the primary forming tank 1 for primary forming treatment; Step S50: cleaning the front and back surfaces of the formed foil 5 by the cleaning mechanism 3; Step S60: transporting the formed foil 5 to the secondary forming tank 2 for secondary forming treatment; Step S70: cleaning the front and back surfaces of the formed foil 5 by the cleaning mechanism 3; Step S80: transferring the formed foil 5 to a three-stage forming tank for three-stage forming treatment; Step S90: transporting the formed foil 5 to 300° C. for high temperature heat treatment for 4-20 minutes; Step S100: transferring the formed foil 5 to a four-stage forming tank for four-stage forming treatment; Step S110: transferring the formed foil 5 to another production line for intermediate processing and post-processing.

[0037] Furthermore, step S30 specifically includes the following steps: Step S31: Passing the head end of the formed foil 5 around a plurality of transmission rollers 41 in sequence, and winding the formed foil 5 around the driving rollers and tightening it; Step S32: The driving roller is started to rotate. In cooperation with the transmission roller 41, the driving roller drives the formed foil to pass through the primary forming tank 1, the cleaning mechanism 3, the secondary forming tank 2, the cleaning mechanism 3, the tertiary forming tank, the quaternary forming tank, the intermediate treatment tank, and the post-treatment tank in sequence. Step S33: As the driving roller and the transmission roller 41 rotate, the movable rod 61 moves back and forth, compressing the return spring 63. When the movable rod 61 reaches its maximum travel, it contacts the press switch 425, thereby controlling the piston rod of the hydraulic cylinder 422 to extend and retract, thereby causing the transmission roller 41 and the driving roller to drive the forming foil 5 to tilt left and right. Step S34: After the driving roller collects the formed foil 5 of a certain length, the driving roller stops rotating, and the return springs 63 in the plurality of transmission rollers 41 drive the latch 62 to return to the initial position, so that the latch 62 drives the transmission roller 41 to rotate 5° in the opposite direction.

[0038] Example 2: This embodiment further improves the driving roller 41 located in the forming tank, and the differences are as follows: See also Figure 3 and Figure 4, the rear end of the front end of one-level formation tank 1 and secondary formation tank 2 is provided with impurity-removing groove 7, is provided with impurity-removing mechanism 8 in the described impurity-removing groove 7.In the formation foil 5 production process, formation liquid can be recycled, and contains the iron ion from the titanium electrode in the formation tank and the stainless steel support in the formation liquid of circulation, under the dual action of chemistry and electrochemical corrosion, these metal parts can be dissolved in the groove, and then be adsorbed on the formation foil 5, therefore need to remove iron ion wherein to the formation liquid that recycles.Simultaneously, because equipment is after shutdown, if formation foil 5 is immersed in the formation liquid always, the oxide film on formation foil 5 surfaces can be hydrated because of long-time immersion, causes oxide film structure to become loose, thereby reduces its dielectric property, therefore also need to after equipment shutdown, formation foil 5 is away from formation liquid.

[0039] The impurity removal mechanism 8 includes an electromagnet 81 and a permanent magnet 82. The permanent magnet 82 and the electromagnet 81 repel each other. The permanent magnet 82 is connected to an "L"-shaped support rod 83. The middle part of the support rod 83 is rotatably connected to the frame. The free end of the support rod 83 is rotatably connected to a connecting rod 84. The free end of the connecting rod 84 is rotatably connected to the carrier plate 421 located in the formation tank.

[0040] Concrete working principle: the formation liquid in the formation tank is before joining the formation tank, and formation liquid is joined in the impurity removal groove 7 in advance, and the equipment is energized, and electromagnet 81 is electric, and electromagnet 81 and permanent magnet 82 repel each other, and permanent magnet 82 is away from electromagnet 81, and the two all adsorb the iron ion in the formation liquid, thereby to the impurity removal of the formation liquid.After the equipment shutdown power outage, electromagnet 81 loses power, and permanent magnet 82 drives support rod 83 to move downward, because support rod 83 is a lever structure, thereby drives connection rod 84 and carrying plate 421 to move upward, thereby the driving roller 41 in the formation tank is taken away from formation liquid, and then formation foil 5 is away from formation liquid.

[0041] The above are only embodiments of the present invention, and the common knowledge such as the specific structure and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A multi-stage oxidation treatment device for capacitor formed foil, comprising a primary forming tank (1), a secondary forming tank (2), a tertiary forming tank, a quaternary forming tank, a middle treatment tank and a post-treatment tank arranged in sequence, a cleaning mechanism (3) being provided between the primary forming tank (1) and the secondary forming tank (2), and a transmission mechanism (4) for transmitting the formed foil (5), characterized in that: The transmission mechanism (4) comprises: Transmission rollers (41), the number of the transmission rollers (41) is several and they are staggered up and down, and the chemical foil (5) passes through the several transmission rollers (41) in sequence; A driving roller, the head end of the formed foil (5) passes around the driving roller, and the driving roller is used to wind and tighten the formed foil (5); A tilting assembly (42) is provided, wherein the tilting assembly (42) is used to tilt the transmission roller (41) and the driving roller.

2. The multi-stage oxidation treatment device for capacitor foil according to claim 1, characterized in that: The tilting assembly (42) comprises an inclined frame, and the transmission roller (41) and the driving roller are respectively arranged on the frame.

3. The multi-stage oxidation treatment device for capacitor foil according to claim 1, characterized in that: The tilting assembly (42) comprises a horizontal frame and a carrier plate (421) arranged on the frame, a hydraulic cylinder (422) is provided in the carrier plate (421), and the hydraulic cylinder (422) is electrically connected to a controller; the bearings at both ends of the transmission roller (41) and the driving roller are respectively provided with a first support plate (423) and a second support plate (424), the free end of the second support plate (424) is rotatably connected to the carrier plate (421), the piston rod of the hydraulic cylinder (422) contacts the free end of the first support plate (423), and the hydraulic cylinder (422) is used to push the first support plate (423) to rotate around the connection point between the second support plate (424) and the carrier plate (421) through the telescopic action of the piston rod, so as to adjust the tilt angle of the transmission roller (41) and the driving roller.

4. The multi-stage oxidation treatment device for capacitor foil according to claim 3, characterized in that: The invention also includes a return mechanism (6) provided on the transmission roller (41), the return mechanism (6) including a movable rod (61) and a latch (62), the latch (62) being fixedly provided on the movable rod (61), the outer wall of the transmission roller (41) being provided with a guide groove (411) matching with the latch (62), the movable rod (61) being rotatably connected to the first support plate (423) and the second support plate (424), and both ends of the movable rod (61) passing through the first support plate (423) and the second support plate (424), two groups of push switches (425) being symmetrically provided on the frame, the two ends of the movable rod (61) being used to abut against the push switches (425), and the push switches (425) being electrically connected to the controller.

5. The multi-stage oxidation treatment device for capacitor foil according to claim 3, characterized in that: Both ends of the movable rod (61) located in the primary forming tank (1), the secondary forming tank (2), the tertiary forming tank, the quaternary forming tank, the intermediate processing tank, and the post-processing tank are connected to an extension rod (426), and the free end of the extension rod (426) is used to abut against the press switch (425).

6. The multi-stage oxidation treatment device for capacitor foil according to claim 4, characterized in that: The return mechanism (6) further includes a return spring (63), which is passed through the movable rod (61) of the transmission roller (41), and the two ends of the return spring (63) are fixedly connected to the support plate (424) and the latch (62), respectively; the free length of the return spring (63) is greater than half the height of the transmission roller (41).

7. The multi-stage oxidation treatment device for capacitor foil according to claim 6, characterized in that: The piston rod of the hydraulic cylinder (422) is initially in a fully retracted position.

8. The multi-stage oxidation treatment device for capacitor foil according to claim 7, characterized in that: A guide groove is provided on the frame, and the first support plate (423) is slidably arranged in the guide groove; the guide groove is used to guide the first support plate (423) to rotate around the connection point between the second support plate (424) and the carrier plate (421).

9. A multi-stage oxidation treatment process for capacitor foil, using a multi-stage oxidation treatment device for capacitor foil according to any one of claims 1 to 8, characterized in that: The steps include: Step S10: soaking the expanded foil in a wetting dispersion; Step S20: cleaning the front and back surfaces of the formed foil by a cleaning mechanism; Step S30: driving the formed foil through the primary forming tank, the secondary forming tank, the tertiary forming tank, the quaternary forming tank, the intermediate treatment tank and the post-treatment tank in sequence through the transmission mechanism; Step S40: transferring the formed foil to a primary forming tank for primary forming treatment; Step S50: cleaning the front and back surfaces of the formed foil by a cleaning mechanism; Step S60: transferring the formed foil to a secondary forming tank for secondary forming treatment; Step S70: cleaning the front and back surfaces of the formed foil by a cleaning mechanism; Step S80: transferring the formed foil to a three-stage forming tank for three-stage forming treatment; Step S90: transporting the formed foil to 300° C. for high temperature heat treatment for 4-20 minutes; Step S100: transferring the formed foil to a four-stage forming tank for four-stage forming treatment; Step S110: transferring the formed foil to another production line for intermediate processing and post-processing.

10. The multi-stage oxidation treatment process for capacitor foil according to claim 9, characterized in that: The step S30 specifically includes the following steps: Step S31: Passing the head end of the formed foil around a plurality of transmission rollers in sequence, and winding the formed foil around the driving roller to be tightened; Step S32: starting the driving roller to rotate, and in cooperation with the transmission roller, the driving roller drives the formed foil to pass through the primary forming tank, the cleaning mechanism, the secondary forming tank, the cleaning mechanism, the tertiary forming tank, the quaternary forming tank, the intermediate treatment tank, and the post-treatment tank in sequence; Step S33: As the driving roller and the transmission roller rotate, the movable rod moves back and forth, compressing the return spring. When the movable rod moves to its maximum stroke, it touches the press switch, thereby controlling the extension and retraction of the piston rod of the hydraulic cylinder, thereby causing the transmission roller and the driving roller to drive the formed foil to tilt left and right. Step S34: After the driving roller collects the formed foil of a fixed length, the driving roller stops rotating, and the return spring drives the latch to return to the initial position, so that the latch drives the driving roller to rotate 5° in the opposite direction.

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