A device and method for cleaning coiled foil

Abstract

The present invention discloses a device and method for cleaning coiled foil. The cleaning device includes an unwinding roller, a winding roller, and a pulling unit. Several cleaning troughs and drying chambers are sequentially arranged between the unwinding roller and the winding roller. The cleaning troughs and drying chambers are each provided with several roller groups. The roller groups form a first channel for the foil to pass through. The foil released from the unwinding roller can pass through the first channel and then be wound onto the winding roller. The pulling unit includes a first slide rail and a slide rod. The first slide rail extends along the first channel. The slide rod is slidably connected to the first slide rail and includes a connecting portion for connecting to the head of the foil. When the slide rod slides along the first slide rail from the unwinding roller to the winding roller, the head of the foil can be pulled through the first channel and wound onto the winding roller. The structure is reasonable, the foil can be easily unloaded in the conveying cleaning device, and the unloading position is highly accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of foil cleaning, and in particular to a device and method for cleaning a coiled foil. Background Art

[0002] Foil is widely used in production and is usually in the form of thin sheets. Before being used in end products, it is usually plated. The coating has high requirements for the cleanliness of the foil base layer, so it is usually necessary to thoroughly clean it before plating. For example, the foil used for hydrogen fuel cell bipolar plates is mostly stamped into foil. Before welding and coating, the foil needs to be cleaned. There are many processes, the cleaning equipment line is long, and the cleaning cost is high, which increases the cost of the bipolar plate. In addition, if pre-coating is used before stamping, although it can greatly reduce the production cost of bipolar plate foil, the coating on the foil is easy to be damaged. In addition, due to its light and thin texture, the foil is very easy to deform and break, and it is difficult to clean manually. When cleaning mechanically, a conveying cleaning method is usually adopted. It is difficult to discharge the foil in the conveying cleaning device and it is easy to wrinkle or deform. Summary of the Invention

[0003] The present invention discloses a cleaning device and method for coiled foil, which solves the technical problems in the prior art of foil unloading being difficult and prone to positional deviation, resulting in wrinkles or deformation. The device has a reasonable structure, facilitates unloading of foil in the conveyor cleaning device, and achieves high unloading position accuracy. The technical solution adopted is as follows:

[0004] A cleaning device for coiled foil material, comprising a unwinding roller, a winding roller and a pulling unit, wherein a plurality of cleaning troughs and drying chambers are sequentially arranged between the unwinding roller and the winding roller, and a plurality of roller groups are provided in the cleaning troughs and the drying chamber, wherein the plurality of roller groups form a first channel for the foil material to pass through, and the foil material released from the unwinding roller can be wound onto the winding roller after passing through the first channel, and the pulling unit comprises a first slide rail and a slide rod, wherein the first slide rail extends along the first channel, and the slide rod is slidably connected to the first slide rail and comprises a connecting portion, wherein the connecting portion is used to connect the head of the foil material, and when the slide rod slides from the unwinding roller to the winding roller along the first slide rail, the head of the foil material can be pulled through the first channel and wound onto the winding roller.

[0005] On the basis of the above technical solution, it also includes a pulling roller parallel to the axis of the unwinding roller and arranged close to the unwinding roller, the pulling roller is wrapped with a first pulling belt, the first pulling belt can be connected to the tail of the foil, the winding roller is wrapped with a second pulling belt, and the lengths of the first pulling belt and the second pulling belt can cover the length of the cleaning device; the second pulling belt can be connected to the connecting part, when the sliding rod slides from the unwinding roller to the winding roller along the first sliding rail, the second pulling belt approaches the head of the foil to be connected to the head of the foil, the connecting part includes a clamping mouth extending along the width direction of the foil, and when the second pulling belt or the foil is extended into the clamping mouth, the clamping mouth can bite the second pulling belt or the foil.

[0006] On the basis of the above technical solution, an ultrasonic generator is provided in the cleaning tank for ultrasonically cleaning the foil, and a first conveying roller group and a tensioning unit are provided above the cleaning tank. The first conveying roller group includes two first conveying rollers arranged opposite to each other in an upper and lower direction, and the channel between the two first conveying rollers forms part of the first channel and conveys the foil forward; the tensioning unit includes a tensioning roller with adjustable height, and the tensioning roller can press the foil into the cleaning tank from top to bottom; the drying chamber includes a fourth conveying roller group, and the fourth conveying roller group includes two fourth conveying rollers arranged opposite to each other in an upper and lower direction, and the channel between the two fourth conveying rollers forms part of the first channel and conveys the foil forward, when the tensioning roller is lifted upward to avoid the first conveying roller group and the fourth conveying roller group, the first channel extends horizontally; the first conveying roller group and the fourth conveying roller group are active roller groups, and along the foil conveying direction, the rotation speed of multiple active roller groups gradually increases to keep the foil tensioned.

[0007] On the basis of the above technical solution, it also includes a ventilation unit, which includes an air inlet duct and an air outlet duct, and the air inlet duct is provided with a second filter, the air outlet duct includes a plurality of air outlet branches, and the outer covers of the several cleaning tanks are provided with a shell, the shell and the upper part of the drying chamber are connected with the air outlet branches, and the shell and the lower part of the drying chamber are connected with an exhaust port, and the air pressure inside the shell and the drying chamber is greater than the external air pressure, and the drying chamber is also provided with a heater for heating air to improve the drying efficiency.

[0008] On the basis of the above technical solution, a water scraper unit, a first cleaning unit and a second cleaning unit are sequentially arranged above each cleaning tank along the foil conveying direction. The water scraper unit is arranged above the cleaning tank and includes two rubber scrapers arranged opposite to each other. The foil that passes through the cleaning liquid upward passes through the channel between the two rubber scrapers to scrape off the cleaning liquid. The first cleaning unit includes two first cleaning rollers arranged opposite to each other. The first cleaning roller includes a roller surface of a water-absorbing material. The foil passes through the channel between the two first cleaning rollers to further absorb the residual cleaning liquid and pick up impurities. The second cleaning unit includes two second cleaning rollers arranged opposite to each other. The foil passes through the channel between the two second cleaning rollers to clean impurities on the surface of the foil.

[0009] Based on the above technical solution, the thickness of the rubber scraper gradually decreases near the end of the foil so as to flexibly contact the foil. The roller surface of the first cleaning roller is made of sponge or cotton wool, and the roller surface of the second cleaning roller is made of non-woven fabric.

[0010] On the basis of the above technical solution, it also includes an extrusion unit arranged near the first cleaning roller, the extrusion unit includes a water guide groove and an extrusion roller, the roller surface cross-section of the extrusion roller is cam-shaped to facilitate the adjustment of the extrusion force on the first cleaning roller, the water guide groove is fixed and placed below the extrusion roller, and the water guide groove has a downward inclination angle along the axis of the extrusion roller.

[0011] On the basis of the above technical solution, the plurality of cleaning tanks include a first cleaning tank, a second cleaning tank and a third cleaning tank arranged in sequence along the foil conveying direction, the cleaning liquid in the first cleaning tank includes a degreasing agent, and the degreasing agent is one or more of sodium carbonate, sodium bicarbonate, sodium hydroxide, petroleum ether, ethanol, methanol, acetone, ether or hydrocarbons; the cleaning liquid in the second cleaning tank includes a pickling agent, and the pickling agent is one or more of hydrochloric acid, sulfuric acid, nitric acid, acetic acid, and oxalic acid, and the cleaning liquid in the third cleaning tank includes deionized water.

[0012] On the basis of the above technical solution, it also includes a reflux circulation pipe, the two ends of which are respectively connected to the inner cavity of the cleaning tank, and the reflux circulation pipe is provided with a circulation pump, a first filter and a monitoring unit. The circulation pump is used to drive the cleaning liquid to circulate in the cleaning tank and the reflux circulation pipe, the first filter is used to filter the cleaning liquid, and the monitoring unit is used to detect the concentration of the degreaser, pickling agent or deionized water entering the reflux circulation pipe. The reflux circulation pipe is also connected to a fluid replenishment pipe. When the concentration of the degreaser, pickling agent or deionized water in the cleaning liquid exceeds the set range value, the fluid replenishment pipe is connected to the reflux circulation pipe for fluid replenishment.

[0013] A method for cleaning a coiled material foil, using the coiled material foil cleaning device as described above, comprises the following steps:

[0014] A. Clamp the free end of the second traction belt to the connecting part;

[0015] B. The two first conveying rollers at each cleaning tank are opened, the two rubber scrapers are opened, the two first cleaning rollers are opened, the two second cleaning rollers are opened, and the two fourth conveying rollers in the drying chamber are opened; C. Under the action of external force, the slide bar slides along the first slide rail. When the slide bar slides from the winding roller to the unwinding roller,

[0016] The sliding rod passes through the two fourth conveying rollers of the drying chamber, and passes through the two second cleaning rollers, the two first cleaning rollers, the two rubber scrapers and the two first conveying rollers at each of the cleaning tanks;

[0017] D. Connect the second pulling belt to the foil head on the unwinding roller;

[0018] E. The two first conveying rollers, two rubber scrapers, two first cleaning rollers and two second cleaning rollers at each of the cleaning tanks, and the two fourth conveying rollers in the drying chamber are closed to form a passage for the foil to pass through; F. The winding roller (2) is wound up, and the second pulling belt and the foil pass through the two first conveying rollers (5), two rubber scrapers (12), two first cleaning rollers (13) and two second cleaning rollers (14) at each of the cleaning tanks, and the two fourth conveying rollers (7) in the drying chamber, and are wound up onto the winding roller (2).

[0019] G. Before the unwinding roller completes unwinding, connect the tail of the foil to the head of the first pulling belt;

[0020] H. The winding roller completes winding and cuts off the first pulling belt.

[0021] Beneficial effects

[0022] The present invention has a reasonable structure and includes several cleaning and drying chambers, which can gradually improve the cleaning accuracy in stages and batches. In addition, the drying chamber can dry the foil after cleaning to facilitate subsequent production; the pulling unit includes a first slide rail and a slide rod, and the head of the foil or the second pulling belt can be extended into the clamping mouth, so that the foil can be placed in the conveying cleaning device conveniently and stably, and can be applied to a longer continuous cleaning production line. In addition, since the foil is relatively light and thin, both ends need to be clamped by the roller group during cleaning. The setting of the first pulling belt and the second pulling belt can compensate for the head and tail of the foil, so that the head and tail of the foil coil can also be cleaned, avoiding waste of foil or affecting the cleaning quality, which is conducive to reducing costs.

[0023] In addition, the first channel formed by the plurality of first conveyor rollers and the fourth conveyor rollers in the present invention extends horizontally, that is, the first slide rail extends horizontally, which facilitates the sliding of the slide rod and helps reduce manufacturing costs. During cleaning, the tensioning roller can press the foil into the cleaning liquid from top to bottom, on the one hand avoiding the first channel, and on the other hand tensioning the foil. In addition, along the direction of foil conveyance, the rotation speed of the plurality of first conveyor rollers and the fourth conveyor rollers gradually increases, which can assist in tensioning the foil. The structure is simple and can prevent the foil from wrinkling or deformation during the conveying and cleaning process.

[0024] The cleaning tank of the present invention adopts an ultrasonic cleaning method, which saves the amount of cleaning liquid and cleans more accurately. In addition, the cleaning tank is also connected to a reflux circulation pipe, which is provided with a circulation pump, a first filter and a monitoring unit, so as to facilitate real-time monitoring of the concentration of the degreasing agent, pickling agent or deionized water in the cleaning liquid, so as to replenish or replace the cleaning liquid. In addition, under the action of the circulation pump, a directional liquid flow can be formed inside the cleaning liquid, so as to avoid impurities from being deposited at the bottom of the cleaning tank and affecting the cleaning quality of the foil. In addition, a water scraper unit, a first cleaning unit and a second cleaning unit are sequentially arranged above each cleaning tank to facilitate timely scraping of the cleaning liquid and impurities adhering to the foil. Along the foil conveying direction, the water scraper unit, the first cleaning unit and the second cleaning unit are reasonably arranged. On the one hand, they can effectively scrape and recover the cleaning liquid, and on the other hand, they can effectively and thoroughly remove the attached impurities, which is conducive to subsequent cleaning or drying. In addition, the roller surface of the first cleaning unit can be made of sponge or collodion material with good water absorption performance, and is also provided with an extrusion roller and a water guide groove. The extrusion roller can squeeze out the cleaning liquid in the sponge or collodion to improve the water absorption performance of the first cleaning unit, and the water guide groove can guide the squeezed cleaning liquid to flow back into the cleaning tank.

[0025] In the present invention, the shell and the drying chamber always maintain a positive pressure state relative to the outside world, and the air passes through the shell or the drying chamber from top to bottom. On the one hand, the positive pressure state can prevent dust from the outside air from entering, and on the other hand, it can prevent dust particles in the shell or the drying chamber from being suspended and contaminating the foil. On the other hand, the air flowing in the drying chamber can also quickly take away moisture, greatly improving the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only one embodiment of the present invention. Those skilled in the art can also derive other implementation drawings based on the provided drawings without inventive effort.

[0027] Figure 1 : Schematic diagram of the present invention;

[0028] Figure 2: A schematic structural diagram of the first passage after the tensioning unit, the water scraper unit, the first cleaning roller group, and the second cleaning roller group avoid the present invention;

[0029] Figure 3 : A schematic structural diagram of a cleaning tank according to the present invention;

[0030] Figure 4 : Schematic diagram of the three-dimensional structure of the first cleaning roller and the squeezing unit in the present invention;

[0031] Figure 5 : Schematic diagram of the three-dimensional structure of the pulling unit in the present invention; DETAILED DESCRIPTION

[0032] The following description and accompanying drawings sufficiently illustrate the specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for portions and features of other embodiments. The scope of the embodiments herein includes the entire scope of the claims, including all available equivalents thereof. Herein, the terms "first," "second," and the like are used solely to distinguish one element from another and do not require or imply any actual relationship or order between these elements. In practice, the first element can also be referred to as the second element, and vice versa. Furthermore, the terms "comprise," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a structure, device, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such structure, device, or apparatus. Without further limitation, an element defined by the phrase "comprising a..." does not preclude the presence of other identical elements in the structure, device, or apparatus comprising the element. The various embodiments herein are described in a progressive manner, with each embodiment focusing on its differences from the other embodiments. Similar or identical parts between the various embodiments can be referenced to each other.

[0033] The terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used herein to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are intended only to facilitate the description of this document and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In the description herein, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, they can be mechanical or electrical connections, or they can be internal connections between two elements, they can be directly connected, or they can be indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0034] As used herein, unless otherwise specified, the term "plurality" means two or more.

[0035] In this document, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0036] In this article, the term "and / or" is used to describe the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0037] like Figures 1 to 5 The cleaning device for coiled foil shown in the figure comprises an unwinding roller 1, a winding roller 2 and a pulling unit 3. In this embodiment, three cleaning tanks and a drying chamber are sequentially arranged between the unwinding roller 1 and the winding roller 2, and a plurality of roller groups are provided in the cleaning tank and the drying chamber. The plurality of roller groups form a first channel for the foil to pass through. The foil released from the unwinding roller can pass through the first channel and then be wound onto the winding roller. Figure 1 and 2 shown.

[0038] Among them, the three cleaning tanks are the first cleaning tank, the second cleaning tank and the third cleaning tank along the foil conveying direction. The cleaning liquid in the first cleaning tank includes a degreasing agent, and the degreasing agent is one or more of sodium carbonate, sodium bicarbonate, sodium hydroxide, petroleum ether, ethanol, methanol, acetone, ether or hydrocarbons; the cleaning liquid in the second cleaning tank includes a pickling agent, and the pickling agent is one or more of hydrochloric acid, sulfuric acid, nitric acid, acetic acid, and oxalic acid. The cleaning liquid in the third cleaning tank includes deionized water. The aforementioned cleaning liquid components are prior art and will not be repeated here.

[0039] In addition, each of the three cleaning tanks is equipped with an ultrasonic generator for ultrasonic cleaning of the foil, wherein the ultrasonic generator is a prior art and will not be described in detail here. Figure 3As shown, a first conveying roller group and a tensioning unit 6 are provided above each cleaning tank, wherein the first conveying roller group includes two first conveying rollers 5 arranged opposite to each other in an upper and lower direction, and the channel between the two first conveying rollers 5 forms part of the first channel, wherein the roller shaft of the first conveying roller 5 is fixedly connected to the rotor end of the first motor, and can convey the foil material forward; the tensioning unit 6 includes a tensioning roller 62 with adjustable height, and the tensioning roller 62 can press the foil material into the cleaning tank from top to bottom, specifically, the tensioning roller 62 is connected to a telescopic rod 61 upward, and the telescopic rod 61 can drive the tensioning roller 62 to move up and down; in addition, a water scraper unit, a first cleaning unit and a second cleaning unit are sequentially provided above each cleaning tank along the foil conveying direction, as shown in FIG. Figure 3 As shown, the water scraper unit is arranged above the cleaning tank and includes two rubber scrapers 12 arranged opposite to each other, and the thickness of the rubber scraper 12 is gradually reduced near the end of the foil so as to flexibly contact the foil. The foil passing through the cleaning liquid upward passes through the channel between the two rubber scrapers 12 to scrape off the cleaning liquid. The first cleaning unit includes two first cleaning rollers 13 arranged opposite to each other, and the first cleaning rollers 13 include a roller surface of a water-absorbing material, such as a sponge or cotton wool. The foil passes through the channel between the two first cleaning rollers 13 to further absorb the residual cleaning liquid and pick up impurities. In addition, it also includes a squeezing unit arranged near the first cleaning rollers 13, such as Figure 4 As shown, the squeezing unit includes a water guide groove 16 and a squeezing roller 15. The roller surface of the squeezing roller 15 is cam-shaped in cross-section. The squeezing roller 15 is rotated to adjust the squeezing force on the first cleaning roller 13. The water guide groove 16 is fixed and positioned below the squeezing roller 15, and the water guide groove 16 is inclined downward along the axis of the squeezing roller 15. The second cleaning unit includes two second cleaning rollers 14 arranged opposite each other. The foil passes through the channel between the two second cleaning rollers 14 to clean impurities from the foil surface. In this embodiment, the roller surface of the second cleaning roller 14 is made of non-woven fabric, which not only absorbs impurities on the foil surface but also prevents the introduction of new impurities when wet, resulting in low cost and excellent cleaning effect. In this embodiment, the water scraping unit, the first cleaning unit, and the second cleaning unit have gradually decreasing water removal capacity and increasing impurity adhesion rate, resulting in excellent foil cleaning effect. In addition, the first cleaning roller 13 and the second cleaning roller 14 rotate at a differential speed relative to the foil, for example, the first cleaning roller 13 and the second cleaning roller 14 rotate in opposite directions relative to the foil.

[0040] The drying chamber includes a fourth conveyor roller group, which includes two fourth conveyor rollers 7 arranged opposite to each other in an upper and lower direction. The channel between the two fourth conveyor rollers 7 forms part of the first channel. The roller shaft of the fourth conveyor roller 7 is connected to the rotor end of the second motor and transports the foil forward.

[0041] Among them, the tensioning roller 62 can be lifted, the two rubber scrapers 12 can be opened, the two first cleaning rollers 13 can be opened, and the two second cleaning rollers 14 can be opened to avoid the first channel, and the first channel formed by the first conveying roller group and the fourth conveying roller group extends horizontally, such as Figure 2 As shown; in this embodiment, the first conveying roller group and the fourth conveying roller group are both active roller groups, and along the foil conveying direction, the rotation speed of multiple active roller groups gradually increases to keep the foil tensioned, simplify the structure, and help reduce the failure rate and manufacturing cost.

[0042] like Figure 3 As shown, it also includes a reflux circulation pipe 17, the two ends of which are respectively connected to the inner cavity of the cleaning tank. The reflux circulation pipe 17 is provided with a circulation pump 18, a first filter 19 and a monitoring unit. The circulation pump 18 is used to drive the cleaning liquid to circulate in the cleaning tank and the reflux circulation pipe 17, so that a directional water flow is formed in the cleaning tank to prevent impurities from being deposited at the bottom, which is conducive to improving the purification effect. The first filter 19 is used to filter the cleaning liquid. The monitoring unit is used to detect the concentration of the degreaser, pickling agent or deionized water entering the reflux circulation pipe 17, wherein the monitoring unit is a prior art and will not be described in detail here. In addition, the detection object of the monitoring unit corresponds to the component of the cleaning liquid. The reflux circulation pipe 17 is also connected to a rehydration pipe (not shown). When the concentration of the degreaser, pickling agent or deionized water in the cleaning liquid exceeds the set range value, the rehydration pipe is connected to the reflux circulation pipe 17 for rehydration. The first filter 19 is a prior art and will not be described in detail here.

[0043] like Figure 5 As shown, the pulling unit 3 includes a first slide rail 31 and a slide rod 32. Specifically, there are two first slide rails 31 and are symmetrically arranged on both sides of the cleaning tank and the drying chamber, and the first slide rail 31 extends along the first channel, and the two ends of the slide rod 32 are slidably connected to the two first slide rails 31 respectively. The slide rod 32 includes a connecting portion, which is used to connect the head of the foil. In this embodiment, the connecting portion includes a clamping opening 33 extending along the width direction of the foil. The bottom of the slide rail includes a U-shaped groove with an opening facing downward, and vertically extending slide grooves are provided on the two side walls of the U-shaped groove. It also includes a clamping plate 34 and fastening screws 35 provided on both sides of the U-shaped groove. The two ends of the clamping plate 34 extend into the slide groove and are slidably connected to the slide groove up and down. The fastening screws 35 can pass through the clamping plate 34 and be screwed to the top surface of the slide groove, that is, the clamping plate 34 and the U-shaped groove together form a clamping opening 33, and the size of the clamping opening 33 can be adjusted by screwing the fastening screws.

[0044] like Figure 1 and 2As shown, it also includes a pulling roller 4 that is parallel to the axis of the unwinding roller 1 and arranged close to the unwinding roller 1. In this embodiment, both ends of the roller shaft of the unwinding roller 1 are rotatably connected to the first bracket, and both ends of the roller shaft of the pulling roller 4 are rotatably connected to the first bracket and are parallel to the axis of the unwinding roller 1. A first pulling belt is wrapped around the pulling roller 4, wherein the first pulling belt is roughly the same width as the foil material, and the first pulling belt can be connected to the tail of the foil material. Specifically, the first pulling belt and the tail of the foil are passed through the clamping port 33 at the same time to position the first pulling belt and the tail of the foil, and holes are punched in the overlapping part of the first pulling belt and the tail of the foil and connected. For example, the first pulling belt and the tail of the foil are connected by passing a plastic snap through the hole, and then the fastening screw is screwed again to open the clamping port 33 to facilitate the passage of the first pulling belt and the tail of the foil.

[0045] The winding roller 2 is wrapped with a second pulling belt, which can be connected to the connecting part. Specifically, the second pulling belt can be inserted into the clamping opening 33, and the fastening screw 35 is screwed to tighten and fix the second pulling belt. Then, the slide bar 32 is driven to slide along the first slide rail 31, and the second pulling belt can be smoothly pulled to the side of the unwinding roller 1 to connect with the foil head. Specifically, the fastening screw 35 is screwed to open the clamping opening 33, and then the foil head is inserted into the clamping opening 33. The overlapping part of the second pulling belt and the foil head is punched and connected, such as using a plastic snap fastener to connect the second pulling belt and the foil head through the hole. In addition, to facilitate cleaning the head and tail of the foil, the length of the first pulling belt and the second pulling belt can both cover the length of the cleaning device.

[0046] like Figure 1 and 2 As shown, it also includes a ventilation unit, which includes an air inlet duct 9 and an air outlet duct, and the air inlet duct 9 is provided with a second filter, the air outlet duct includes a plurality of air outlet branches 10, and the outer covers of the cleaning tanks are provided with a shell 11, which isolates the cleaning tank from the outside world to avoid pollution from the working environment. The shell 11 and the upper part of the drying chamber are connected to the air outlet branch 10, and the shell 11 and the lower part of the drying chamber are connected to an exhaust port, and the air pressure inside the shell 11 and the drying chamber is greater than the external air pressure. The drying chamber is also provided with a heater 20 for heating air to improve the drying efficiency.

[0047] In addition, a dust removal chamber is provided on the side of the drying chamber close to the winding roller 2. The upper part of the dust removal chamber is connected to an air outlet branch pipe 10, and the bottom of the dust removal chamber is connected to an exhaust port. In addition, a fifth conveying roller group is provided in the dust removal chamber. The fifth conveying roller group includes two fifth conveying rollers 8 arranged opposite to each other in an upper and lower direction. The roller shaft of the fifth conveying roller 8 is connected to the rotor end of the fifth motor, and the fifth conveying roller can provide static electricity to absorb dust on the surface of the foil.

[0048] A method for cleaning a coiled material foil, using the coiled material foil cleaning device as described above, comprises the following steps:

[0049] A. Clamp the free end of the second traction belt to the connecting portion. Specifically, the worker manually inserts the second traction belt into the clamping opening 33 and tightens the fastening screw 35. The clamping opening 33 then tightens the second traction belt.

[0050] B. The two first conveying rollers 5 at each cleaning tank are opened, the two rubber scrapers 12 are opened, the two first cleaning rollers 13 are opened, the two second cleaning rollers 14 are opened, the two fourth conveying rollers 7 in the drying chamber are opened, and the two fifth conveying rollers 8 in the dust removal chamber are opened to form a channel for the slide rod to pass through; C. Under the action of external force, such as Figure 2 As shown, the slide bar 32 slides along the first slide rail 31. When the slide bar 32 slides from the winding roller 2 to the unwinding roller 1, the slide bar 32 sequentially passes through the two fifth conveying rollers 8 in the dust removal chamber, the two fourth conveying rollers 7 in the drying chamber, and passes through the two second cleaning rollers 14, the two first cleaning rollers 13, the two rubber scrapers 12 and the two first conveying rollers 5 at each cleaning tank, and then pulls the second pulling belt to the unwinding roller 1;

[0051] D. Connect the second pulling belt to the foil head on the unwinding roller 1. Specifically, the worker holds the second pulling belt and then tightens the fastening screw 35 to open the clamping opening 33. The worker then inserts the foil head into the clamping opening 33 and then tightens the fastening screw 35 so that the clamping opening 33 bites the foil and the second pulling belt. Then, a number of through holes are drilled at the overlapping portion of the foil head and the second pulling belt, which pass through the foil and the second pulling belt. The through holes extend along the width of the foil, and each through hole is provided with a snap fastener, which connects the foil and the second pulling belt. Then, the fastening screw 35 is tightened to open the pulling opening 33. E. The two first conveying rollers 5, the two rubber scrapers 12, the two first cleaning rollers 13 and the two second cleaning rollers 14 at each of the cleaning tanks, the two fourth conveying rollers 7 in the drying chamber, and the two fifth conveying rollers 8 in the dust removal chamber are closed to form a cleaning channel for the foil to pass through.

[0052] F. The winding roller 2 winds up, and the second pulling belt and the foil pass through the channels between the two first conveying rollers 5, the two rubber scrapers 12, the two first cleaning rollers 13 and the two second cleaning rollers 14 at each of the cleaning tanks, the two fourth conveying rollers 7 in the drying chamber and the two fifth conveying rollers 8 in the dust removal chamber, and are wound up onto the winding roller 2.

[0053] G. Before the unwinding roller 1 completes unwinding, connect the tail of the foil to the head of the first pulling belt. Specifically, the unwinding roller 1 and the winding roller 2 stop working, then extend the tail end of the foil into the clamping opening 33, and then tighten the fastening screw 35 to close the clamping opening 33, so that the clamping opening 33 bites the foil and the first pulling belt tightly. Then, punch several through holes that penetrate the foil and the first pulling belt at the overlapping part of the foil head and the first pulling belt. The several through holes extend along the width direction of the foil, and each through hole is provided with a snap fastener.

[0054] The foil and the first pulling belt are connected by a snap fastener, and then the fastening screw 35 is screwed to open the pulling opening 33; H. The winding roller 2 is wound up, and the first pulling belt is cut off near the pulling roller 4.

[0055] In other embodiments of the present invention, after the second pulling belt is pulled to the unwinding roller 1, the fastening screw 35 is screwed to open the clamping port 33, and then the foil head is inserted into the clamping port 33, and then the fastening screw 35 is screwed again to close the clamping port 33, so that the clamping port 33 bites the second pulling belt and the foil head, and the two first conveying rollers 5 at each cleaning tank remain in an open state, the two rubber scrapers 12 remain in an open state, the two first cleaning rollers 13 remain in an open state, and the two second cleaning rollers 14 remain in an open state. , the two fourth conveying rollers 7 of the drying chamber remain in an open state, and the two fifth conveying rollers 8 of the dust removal chamber remain in an open state, and then driven by external force, the slide bar 32 slides along the first slide rail toward the winding roller, and every time the slide bar 32 slides through a roller group or a water wiper unit, the roller group or the water wiper unit is closed and forms a channel for only the foil or the second pulling belt to pass through, which can save the length of the second pulling belt. When the slide bar 32 slides close to the winding roller 2, the fastening screw 35 is screwed, the clamping mouth 33 is opened, and the foil head is wrapped around the winding roller 2.

[0056] The reel 2 then reels the foil, and the foil is conveyed forward and cleaned in the cleaning device by the first conveyor rollers. The connection and conveying method between the tail of the foil and the first pulling belt is similar to the connection and conveying method between the head of the foil and the second pulling belt, and will not be repeated here.

[0057] The present invention has been described above by way of examples, but the present invention is not limited to the above specific embodiments. Any changes or modifications based on the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A cleaning device for coiled foil, characterized in that: The invention comprises an unwinding roller (1), a winding roller (2) and a pulling unit (3), wherein a plurality of cleaning tanks and drying chambers are sequentially arranged between the unwinding roller (1) and the winding roller (2), and a plurality of roller groups are arranged in the cleaning tank and the drying chamber, wherein the plurality of roller groups form a first channel for the foil to pass through, and the foil released from the unwinding roller (1) can pass through the first channel and then be wound onto the winding roller (2), and the pulling unit (3) comprises a first slide rail (31) and a slide rod (32), wherein the first slide rail (31) extends along the first channel, and the slide rod (32) is slidably connected to the first slide rail (31) and comprises a connecting portion, wherein the connecting portion is used to connect the head of the foil, and when the slide rod (32) slides along the first slide rail (31) from the unwinding roller (1) to the winding roller (2), the head of the foil can be pulled through the first channel and wound onto the winding roller (2); The invention also includes a pulling roller (4) which is parallel to the axis of the unwinding roller (1) and is arranged close to the unwinding roller (1), wherein a first pulling belt is wrapped around the pulling roller (4), and the first pulling belt can be connected to the tail of the foil; the winding roller (2) is wrapped around the outside of the second pulling belt, and the second pulling belt can be connected to the connecting portion; the plurality of cleaning tanks include a first cleaning tank, a second cleaning tank and a third cleaning tank which are arranged in sequence along the foil conveying direction, the cleaning liquid in the first cleaning tank includes a degreasing agent, the cleaning liquid in the second cleaning tank includes a pickling agent, and the cleaning liquid in the third cleaning tank includes deionized water.

2. The coil foil cleaning device according to claim 1, characterized in that: The lengths of the first pulling belt and the second pulling belt can both cover the length of the cleaning device; when the slide bar (32) slides along the first slide rail (31) from the unwinding roller (1) to the winding roller (2), the second pulling belt approaches the foil head to be connected to the foil head, and the connecting portion includes a clamping opening (33) extending along the width direction of the foil, and when the second pulling belt or the foil is extended into the clamping opening (33), the clamping opening (33) can bite the second pulling belt or the foil.

3. The coil foil cleaning device according to claim 1, characterized in that: The cleaning tank is provided with an ultrasonic generator for ultrasonically cleaning the foil. A first conveying roller group and a tensioning unit (6) are provided above the cleaning tank. The first conveying roller group includes two first conveying rollers (5) arranged opposite to each other in an upper and lower direction. The channel between the two first conveying rollers (5) forms part of the first channel and conveys the foil forward. The tensioning unit (6) includes a tensioning roller (62) with an adjustable height position. The tensioning roller (62) can press the foil into the cleaning tank from top to bottom. The drying chamber includes a fourth conveying roller group. The fourth conveying roller group includes two fourth conveying rollers (7) arranged opposite to each other in an upper and lower direction. The channel between the two fourth conveying rollers (7) forms part of the first channel and conveys the foil forward. When the tensioning roller (62) is lifted up to avoid the first conveying roller group and the fourth conveying roller group, the first channel extends horizontally. The first conveying roller group and the fourth conveying roller group are active roller groups, and along the foil conveying direction, the rotation speed of the multiple active roller groups gradually increases to keep the foil tensioned.

4. The coil foil cleaning device according to claim 1, characterized in that: The invention also includes a ventilation unit, wherein the ventilation unit includes an air inlet duct (9) and an air outlet duct, and the air inlet duct (9) is provided with a second filter, the air outlet duct includes a plurality of air outlet branches (10), and the outer covers of the plurality of cleaning tanks are provided with a shell (11), the shell (11) and the upper part of the drying chamber are both connected to the air outlet branches (10), and the shell (11) and the lower part of the drying chamber are connected to an exhaust port, and the air pressure inside the shell (11) and the drying chamber is greater than the external air pressure, and the drying chamber is further provided with a heater (20) for heating air to improve the drying efficiency.

5. The coil foil cleaning device according to any one of claims 2 to 4, characterized in that: A water scraper unit, a first cleaning unit and a second cleaning unit are sequentially arranged above each cleaning tank along the foil conveying direction. The water scraper unit is arranged above the cleaning tank and includes two rubber scrapers (12) arranged opposite to each other. The foil passing through the cleaning liquid upward passes through the channel between the two rubber scrapers (12) to scrape off the cleaning liquid. The first cleaning unit includes two first cleaning rollers (13) arranged opposite to each other. The first cleaning roller (13) includes a roller surface of a water-absorbing material. The foil passes through the channel between the two first cleaning rollers (13) to further absorb the residual cleaning liquid and pick up impurities. The second cleaning unit includes two second cleaning rollers (14) arranged opposite to each other. The foil passes through the channel between the two second cleaning rollers (14) to clean impurities on the surface of the foil.

6. The coil foil cleaning device according to claim 5, characterized in that: The thickness of the rubber scraper (12) gradually decreases near the end of the foil material so as to flexibly contact the foil material. The roller surface of the first cleaning roller (13) is made of sponge or collodion, and the roller surface of the second cleaning roller (14) is made of non-woven fabric.

7. The coil foil cleaning device according to claim 6, characterized in that: The invention also includes an extrusion unit arranged near the first cleaning roller (13), the extrusion unit including a water guide groove (16) and an extrusion roller (15), the roller surface cross section of the extrusion roller (15) being cam-shaped to facilitate adjustment of the extrusion force on the first cleaning roller (13), the water guide groove being fixedly arranged and placed below the extrusion roller (15), and the water guide groove (16) having a downward tilt angle along the axis of the extrusion roller (15).

8. The coil foil cleaning device according to claim 5, characterized in that: The degreasing agent is one or more of sodium carbonate, sodium bicarbonate, sodium hydroxide, petroleum ether, ethanol, methanol, acetone, ether or hydrocarbon; the pickling agent is one or more of hydrochloric acid, sulfuric acid, nitric acid, acetic acid and oxalic acid.

9. The coil foil cleaning device according to claim 8, characterized in that: The invention also includes a reflux circulation pipe (17), the two ends of which are respectively connected to the inner cavity of the cleaning tank. The reflux circulation pipe (17) is provided with a circulation pump (18), a first filter (19) and a monitoring unit. The circulation pump (18) is used to drive the cleaning liquid to circulate in the cleaning tank and the reflux circulation pipe (17). The first filter (19) is used to filter the cleaning liquid. The monitoring unit is used to detect the concentration of the degreasing agent, pickling agent or deionized water entering the reflux circulation pipe (17). The reflux circulation pipe (17) is also connected to a fluid replenishing pipe. When the concentration of the degreasing agent, pickling agent or deionized water in the cleaning liquid exceeds a set range value, the fluid replenishing pipe is connected to the reflux circulation pipe (17) for fluid replenishment.

10. A method for cleaning a coiled foil, characterized in that: The device for cleaning a coiled foil as claimed in any one of claims 6 to 9 comprises the following steps: A. Clamp the free end of the second traction belt to the connecting part; B. The two first conveying rollers (5) at each cleaning tank are opened, the two rubber scrapers (12) are opened, the two first cleaning rollers (13) are opened, the two second cleaning rollers (14) are opened, and the two fourth conveying rollers (7) of the drying chamber are opened; C. Under the action of external force, the slide bar (32) slides along the first slide rail (31). When the slide bar (32) slides from the winding roller (2) to the unwinding roller (1), the slide bar (32) passes through the two fourth conveying rollers (7) of the drying chamber, and passes through the two second cleaning rollers (14), the two first cleaning rollers (13), the two rubber scrapers (12) and the two first conveying rollers (5) at each of the cleaning tanks; D. Connect the second pulling belt to the foil head on the unwinding roller (1); E. The two first conveying rollers (5), the two rubber scrapers (12), the two first cleaning rollers (13), the two second cleaning rollers (14), and the two fourth conveying rollers (7) in each of the cleaning tanks are closed to form a passage for the foil to pass through; F. The reeling roller (2) reels the second pulling belt and the foil material, passes through the two first conveying rollers (5), two rubber scrapers (12), two first cleaning rollers (13) and two second cleaning rollers (14) at each of the cleaning tanks, and the two fourth conveying rollers (7) in the drying chamber, and is reeled onto the reeling roller (2); G. before the unwinding roller (1) is completed, the tail of the foil is connected to the head of the first pulling belt; H. The winding roller (2) completes winding and cuts off the first pulling belt.

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