Multi-layer metal foil production equipment

Abstract

The invention discloses multi-layer metal foil production equipment which comprises an unwinding unit group, a winding unit group and a winding unit group, the coating unit group comprises at least one pair of coating units; the drying unit set comprises at least one pair of drying units located on the two sides. The middle film unwinding unit is used for releasing a middle film; the composite unit group comprises at least one composite unit; the winding unit is arranged at the discharging end of the composite unit group; the conveying device comprises at least one pair of conveying units, and the conveying units are arranged between the drying unit and the compounding unit; the tension detection unit is arranged between the unwinding unit and the coating unit and / or between the coating unit and the drying unit and / or between the conveying unit and the compounding unit; and the controller is used for receiving detection information of the tension detection unit and controlling the rotating speed of the conveying device or the unwinding unit group based on the detection information. According to the invention, the compounded metal foils at two sides cannot deform, so that the uniformity of the thickness of the prepared multi-layer metal foil can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of proton exchange membrane production equipment, and in particular to multi-layer metal foil production equipment. Background Art

[0002] Proton exchange membrane (PEM) is the core component of the membrane electrode of proton exchange membrane fuel cell, and its performance plays a vital role in the operation of the entire power generation system. Proton exchange membrane not only has a barrier effect, but also has the function of conducting protons. The most commonly used proton exchange membrane material is perfluorosulfonic acid resin film. This type of material has excellent proton conductivity, heat resistance, mechanical properties, electrochemical properties and chemical stability.

[0003] So far, the perfluorosulfonic acid proton exchange membrane prepared by perfluorosulfonic acid resin is the solid electrolyte with the best comprehensive performance. There are three main methods for producing perfluorosulfonic acid proton membrane: melt extrusion casting, solution casting and solution casting.

[0004] Among them, the solution casting method is to prepare the perfluorosulfonic acid proton membrane by coating the perfluorosulfonic acid solution on the steel belt of the steel belt casting machine, and then transporting the steel belt to the drying mechanism for drying and then winding it up. The steel belt used in the ordinary steel belt casting machine has a large deformation and uneven thickness. On the one hand, the prepared perfluorosulfonic acid proton membrane is uneven, resulting in unstable performance; on the other hand, after the ordinary steel belt casting machine has been used for a period of time, the deformation of the steel belt increases, which is not suitable for production anymore. The steel belt needs to be replaced frequently, and the production cost is high. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of unstable performance of proton exchange membranes prepared by current proton exchange membrane production equipment, thereby providing a multi-layer metal foil production equipment.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A multi-layer metal foil production device, comprising:

[0008] An unwinding unit group, comprising at least one pair of unwinding units;

[0009] A coating unit group, comprising at least one pair of coating units, each of the coating units respectively corresponding to a discharge end of the unwinding unit and used for coating the metal foil released by the unwinding unit;

[0010] A drying unit group, comprising at least one pair of drying units located on both sides, each of the drying units corresponding to a discharge end of the coating unit and used to dry the metal foil coated by the coating unit;

[0011] An intermediate film unwinding unit, used for releasing the intermediate film;

[0012] A composite unit group, comprising at least one composite unit, wherein the composite unit is arranged at the discharge end of the drying unit, and is used to press the metal foil dried by the drying unit on one side, the intermediate film released by the intermediate film unwinding unit, and the metal foil dried by the drying unit on the other side into a metal foil composite layer;

[0013] A winding unit is arranged at the discharge end of the composite unit group, the winding unit is connected to the metal foil composite layer output by the composite unit group and is used to collect the metal foil composite layer;

[0014] A conveying device, comprising at least one pair of conveying units, wherein the conveying units are arranged between the drying unit and the compounding unit;

[0015] A tension detection unit, arranged between the unwinding unit and the coating unit and / or between the coating unit and the drying unit and / or between the conveying unit and the compounding unit;

[0016] The controller is used to receive the detection information of the tension detection unit and control the rotation speed of the conveying device or the unwinding unit group based on the detection information to make the speed of the metal foil entering the composite unit consistent.

[0017] Further optimizing the technical solution, the transport unit includes:

[0018] A driving roller, on which a metal foil is sleeved;

[0019] An active roller driver is connected to the active roller, and a controlled end of the active roller driver is connected to an output end of the controller.

[0020] To further optimize the technical solution, the active roller is a vacuum adsorption roller or a rubber roller.

[0021] To further optimize the technical solution, the transport unit further includes:

[0022] The first deflection corrector is connected to the active roller, the controlled end of the first deflection corrector is connected to the output end of the controller, and the first deflection corrector is used to perform position deflection correction on the metal foil on the active roller.

[0023] Further optimizing the technical solution, the tension detection unit includes:

[0024] A tension roller, arranged between the unwinding unit and the coating unit and / or between the coating unit and the drying unit and / or between the conveying unit and the compounding unit;

[0025] A tension detection sensor is arranged on the tension roller, and a signal output end of the tension detection sensor is connected to a signal input end of the controller.

[0026] Further optimizing the technical solution, the unwinding unit, the coating unit and the drying unit are provided in multiple pairs, and the compound unit is provided in multiple pairs;

[0027] The composite unit is provided with pressing points, and the multiple layers of metal foil are pressed together at the pressing points to form the metal foil composite layer, and the pressing points on each composite unit are on the same straight line.

[0028] Further optimizing the technical solution, the composite unit includes a hot roller and a composite pressure roller, and the distance between the hot roller and the composite pressure roller can be adjusted;

[0029] The outside of the hot rollers in the remaining compounding units located below the first compounding unit is covered with a flexible material layer.

[0030] To further optimize the technical solution, the multi-layer metal foil production equipment further includes:

[0031] A protective film unwinding unit, used for releasing the protective film;

[0032] The protective film composite unit is arranged between the composite unit group and the winding unit, and is used for composite the protective film with the metal foil composite layer output from the composite unit group.

[0033] Further optimizing the technical solution, the protective film composite unit and the composite unit group are in the same straight line;

[0034] Or an angle is formed between the protective film composite unit and the composite unit group.

[0035] To further optimize the technical solution, the unwinding unit comprises:

[0036] an unwinding roller connected to an unwinding roller driver;

[0037] The sheet splicing platform is arranged at the discharge end of the unwinding roller, and receiving rollers are arranged on both sides thereof;

[0038] The second deviation corrector is arranged on the receiving roller and is used for correcting the position of the metal foil on the receiving roller.

[0039] Further optimizing the technical solution, the winding unit comprises:

[0040] A winding roller connected to a winding roller driver;

[0041] The winding and extruding mechanism contacts the metal foil composite layer on the winding roller and can extrude the metal foil composite layer.

[0042] To further optimize the technical solution, the winding and extrusion mechanism includes:

[0043] A first drive member having a telescopic end;

[0044] A pressing block connected to the telescopic end of the first driving member;

[0045] A first roller, rotatably disposed on the pressing block;

[0046] The squeezing roller is connected to the first passing roller via a connecting plate;

[0047] The second driving member has a telescopic end, and the telescopic end of the second driving member is hinged to the connecting plate.

[0048] Further optimizing the technical solution, the coating unit includes:

[0049] A pressure roller is coaxially connected with a pressure roller driving member, and a metal foil is wound around the bottom end of the pressure roller;

[0050] A pressure roller adjustment mechanism, connected to the pressure roller, for adjusting the position of the pressure roller;

[0051] A micro-concave roller coating assembly is arranged directly below the pressing roller and is used to coat the slurry onto the metal foil wound around the bottom of the pressing roller;

[0052] The micro-concave roller coating assembly adjustment mechanism is connected to the micro-concave roller coating assembly and is used to adjust the position of the micro-concave roller coating assembly.

[0053] To further optimize the technical solution, the multi-layer metal foil production equipment further includes:

[0054] The box body is divided into a first cavity, a second cavity, a third cavity, a fourth cavity and a fifth cavity in sequence; one unwinding unit in each pair of the unwinding units is arranged in the first cavity, and the other unwinding unit in each pair of the unwinding units is arranged in the fifth cavity, one coating unit in each pair of the coating units is arranged in the first cavity, and the other coating unit in each pair of the coating units is arranged in the first cavity, one drying unit in each pair of the drying units is arranged in the second cavity, and the other drying unit in each pair of the drying units is arranged in the fourth cavity, and the composite unit group is arranged in the third cavity.

[0055] The technical solution of the present invention has the following advantages:

[0056] 1. The present invention provides a multi-layer metal foil production equipment, which performs real-time tension detection on the metal foil to be composited by means of a tension detection unit, and adjusts the rotation speed of the conveying unit or the unwinding unit to adjust the tension of the metal foil, so that the tension of the metal foils on both sides entering the composite unit is consistent, and the speed is kept consistent, so that the metal foils on both sides of the composite will not be deformed, thereby ensuring the uniformity of the thickness of the prepared multi-layer metal foil, and making the prepared multi-layer metal foil have small internal stress and small deformation. The proton exchange membrane prepared with the multi-layer metal foil has uniform texture, stable performance, good durability and low production cost.

[0057] 2. The present invention provides a multi-layer metal foil production equipment, in which the active roller of the conveying unit is a vacuum adsorption roller. The arranged vacuum adsorption roller can adsorb the metal foil, and then can drive the metal foil to rotate when the vacuum adsorption roller rotates. After the metal foil is adsorbed, it has the function of tension breaking.

[0058] 3. In the multi-layer metal foil production equipment provided by the present invention, the active roller of the conveying unit is a rubber roller, which can absorb tension and prevent the metal foil from slipping, and has a lower manufacturing cost than a vacuum adsorption roller.

[0059] 4. The present invention provides a multi-layer metal foil production equipment, wherein the multi-layer metal foil is pressed at the pressing points to form a metal foil composite layer, and the pressing points on each composite unit are on the same straight line. When the metal foils on both sides are pressed, the composite unit can fully contact the metal foils on both sides, and effectively discharge the bubbles between the metal foils, thereby ensuring the quality of the composite metal foil. At the same time, such an arrangement can also keep the metal foil speed unchanged before and after pressing.

[0060] 5. The multi-layer metal foil production equipment provided by the present invention has an extrusion roller driven by a second driving member above the winding roller to prevent warping during roll changing and cutting.

[0061] 6. The present invention provides a multi-layer metal foil production equipment. When there are multiple composite units, the hot rollers in the remaining composite units located below the first composite unit are coated with a flexible material layer on the outside. Under a higher pressure, it is beneficial to bubble removal and pressing, improve the pressing quality, and reduce damage to the composite metal foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0063] Figure 1 A schematic diagram of the structure of a multi-layer metal foil production device provided by the present invention;

[0064] Figure 2 A schematic structural diagram of an unwinding unit in a multi-layer metal foil production device provided by the present invention;

[0065] Figure 3 A schematic structural diagram of a coating unit in a multi-layer metal foil production device provided by the present invention;

[0066] Figure 4 A schematic structural diagram of an intermediate film unwinding unit in a multi-layer metal foil production device provided by the present invention;

[0067] Figure 5 A schematic diagram of the positional relationship between the composite unit, the conveying unit, and the intermediate film unwinding unit in the multi-layer metal foil production equipment provided by the present invention;

[0068] Figure 6 A schematic structural diagram of a winding unit in the multi-layer metal foil production equipment provided by the present invention.

[0069] Reference numerals:

[0070] 1. Unwinding unit, 11. Unwinding roller, 12. Second deviation corrector, 13. Splicing platform, 14. Receiving roller;

[0071] 2. coating unit, 21. pressure roller, 22. micro-concave roller, 23. second pass roller, 25. slurry pool, 26. third cylinder, 27. pressure roller connecting plate, 28. rotating shaft, 29. micro-concave roller fixing frame, 210. slide rail;

[0072] 3. drying unit, 31. oven, 32. support roller;

[0073] 4. Compound unit, 41. Hot roller, 42. Compound pressure roller, 43. Fourth cylinder, 44. Compound pressure roller connecting plate, 401. First compound unit, 402. Second compound unit, 403. Third compound unit, 404. Protective film compound unit;

[0074] 5. Winding unit, 51. Winding roller, 52. Squeezing roller, 53. Connecting plate, 54. First cylinder, 55. First passing roller, 56. Second cylinder, 57. Pressing block;

[0075] 6. Intermediate film unwinding unit, 61. Intermediate film unwinding roller, 62. Third passing roller;

[0076] 7. a conveying unit, 71. an active roller, 72. a first deviation corrector;

[0077] 8. Protective film unwinding unit, 81. Protective film unwinding roller;

[0078] 9. Tension roller;

[0079] 10. Box body, 101. First cavity, 102. Second cavity, 103. Third cavity, 104. Fourth cavity, 105. Fifth cavity. DETAILED DESCRIPTION

[0080] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0081] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an" and "an" as used herein may also be meant to include the plural forms. The terms "comprise", "include" and "have" are inclusive and therefore specify the presence of stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0082] Although the terms first, second, etc. may be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. In addition, in the description of the present invention, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0083] For ease of description, spatial relative terms can be used in the text to describe the relationship of an element or feature relative to another element or feature as shown in the figure, and these relative terms are, for example, "front", "rear", "middle", "inside", "longitudinal", "lateral", "side", "vertical", "outside", etc. Such spatial relative terms are intended to include different orientations of the mechanism in use or operation in addition to the orientation depicted in the figure. For example, if the mechanism in the figure flips, the element described as "below other elements or features" or "below other elements or features" will be subsequently oriented to "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include the orientation of the upper and lower parts. The mechanism can be oriented in addition (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0084] It should be noted that the multi-layer metal foil production equipment provided by the present invention is used to produce a multi-layer steel strip composited with a multi-layer metal foil and an adhesive layer, and the multi-layer steel strip can be used for the production of proton exchange membranes.

[0085] Metal foil usually refers to thinner materials, and its thickness is generally between 0.01 and 0.09 mm. Materials with a thickness below 0.1 mm are called foils. Metal strips usually refer to thicker materials, and their thickness is usually greater than 0.1 mm. The present invention uses thinner metal foil to make proton exchange membranes, and the proton conduction effect of the proton exchange membranes made of metal strips is better.

[0086] The specific embodiments of the present invention are described in detail below in conjunction with the multi-layer metal foil production equipment of the first aspect of the present invention.

[0087] It should be noted that the multi-layer metal foil production equipment of the first aspect of the present invention is only a preferred embodiment of the present invention. The multi-layer metal foil production equipment of the present invention can adopt the multi-layer metal foil production equipment of the first aspect of the present invention, and can also adopt other structures. For the convenience of explanation, the multi-layer metal foil production equipment of the first aspect of the present invention is used for explanation below.

[0088] Combination Figures 1 to 6 As shown, this embodiment discloses a multi-layer metal foil production equipment, including an unwinding unit group, a coating unit group, a drying unit group, an intermediate film unwinding unit 6, a composite unit group, a winding unit 5, a conveying device, a tension detection unit and a controller.

[0089] The unwinding unit group includes at least one pair of unwinding units 1, and the two unwinding units 1 in each pair of unwinding units 1 are symmetrically arranged. The unwinding unit 1 is used to release the single-layer metal foil wound thereon.

[0090] The coating unit group includes at least one pair of coating units 2 , the two coating units 2 in each pair of coating units 2 are symmetrically arranged, each coating unit 2 corresponds to the discharge end of an unwinding unit 1 , and is used to coat the metal foil released by the unwinding unit 1 .

[0091] The drying unit group includes at least one pair of drying units 3 located on both sides, and the two drying units 3 in each pair of drying units 3 are symmetrically arranged. Each drying unit 3 corresponds to the discharge end of a coating unit 2 and is used to dry the metal foil coated by the coating unit 2.

[0092] The intermediate film unwinding unit 6 is used to release the intermediate film.

[0093] The composite unit group includes at least one composite unit 4, which is arranged at the discharge end of the drying unit 3. The composite unit is used to press the metal foil dried by the drying unit 3 on one side, the intermediate film released by the intermediate film unwinding unit 6, and the metal foil dried by the drying unit 3 on the other side into a metal foil composite layer.

[0094] The winding unit 5 is arranged at the discharge end of the composite unit group. The winding unit 5 is connected to the metal foil composite layer output by the composite unit group and is used to collect the metal foil composite layer.

[0095] The conveying device includes at least one pair of conveying units, and the conveying units are arranged between the drying unit 3 and the compounding unit.

[0096] The tension detection unit is arranged between the unwinding unit 1 and the coating unit 2 and / or between the coating unit 2 and the drying unit 3 and / or between the conveying unit and the compounding unit, and is used for real-time detection of the tension of the metal foil.

[0097] The controller is used to receive detection information from the tension detection unit, and control the rotation speed of the conveying device or the unwinding unit group based on the detection information to make the speed of the metal foil entering the composite unit consistent.

[0098] The above-mentioned multi-layer metal foil production equipment performs real-time tension detection on the metal foil to be composited through a tension detection unit, and adjusts the rotation speed of the conveying unit 7 or the unwinding unit 1 to adjust the tension of the metal foil, so that the tension of the metal foils on both sides entering the composite unit is consistent, and the speed is kept consistent, so that the metal foils on both sides of the composite will not be deformed, thereby ensuring the uniformity of the thickness of the prepared multi-layer metal foil, and making the prepared multi-layer metal foil have small internal stress and small deformation. The proton exchange membrane prepared with the multi-layer metal foil has uniform texture, stable performance, good durability and low production cost.

[0099] The specific process of regulating the tension of the metal foil is as follows: when it is detected that the tension of the metal foils on both sides entering the composite unit for composite is deviated, that is, the tension of the metal foils on both sides is inconsistent, the tension of the metal foil on the side where the deviation occurs can be regulated; when the tension of the metal foil on one side is inconsistent with the tension information set in the controller, the rotation speed of the conveying device or unwinding unit group on that side can be controlled by the controller to regulate the tension of the metal foil; when a tension change is detected, the rotation speed of the conveying device or unwinding unit group on the side where the tension change occurs can also be controlled by the controller to readjust the tension.

[0100] In some embodiments, the multilayer metal foil production equipment further includes a box 10. The interior of the box 10 is sequentially divided into a first cavity 101, a second cavity 102, a third cavity 103, a fourth cavity 104, and a fifth cavity 105. One unwinding unit 1 in each pair of unwinding units is arranged in the first cavity 101, the other unwinding unit 1 in each pair of unwinding units is arranged in the fifth cavity 105, one coating unit 2 in each pair of coating units is arranged in the first cavity 101, the other coating unit 2 in each pair of coating units is arranged in the fifth cavity 105, one drying unit 3 in each pair of drying units 3 is arranged in the second cavity 102, the other drying unit 3 in each pair of drying units 3 is arranged in the fourth cavity 104, and the composite unit group is arranged in the third cavity 103. In this embodiment, the unwinding unit group, the coating unit group, the drying unit group, the intermediate film unwinding unit 6, the composite unit group, the winding unit 5, the conveying device, and the tension detection unit are arranged in an orderly manner inside the box 10, which can not only save the overall space occupancy rate of the device, but also enable the composite units in the composite unit group to cooperate with each other to jointly realize the preparation of multi-layer metal foil.

[0101] In some embodiments, the conveying unit includes an active roller 71 and an active roller driver. A metal foil is sleeved on the active roller 71. The active roller driver is connected to the active roller 71, and the controlled end of the active roller driver is connected to the output end of the controller. In this embodiment, the active roller driver can be a motor or other driving device, and the active roller 71 is controlled to rotate by the active roller driver, thereby driving the metal foil to rotate. The speed of the metal foil can be adjusted by transporting the metal foil by the active roller 71, and the speed of releasing the metal foil by the unwinding unit 1 and the speed of collecting the metal foil by the rewinding unit 5 are coordinated to jointly realize the regulation of the tension of the metal foil.

[0102] In some embodiments, the active roller 71 is a vacuum adsorption roller, which can adsorb the metal foil, and then drive the metal foil to rotate when the vacuum adsorption roller rotates, and after the metal foil is adsorbed, it has the function of tension isolation. As an alternative embodiment, the active roller 71 is a rubber roller, which can absorb tension and prevent the metal foil from slipping, and has a lower manufacturing cost than the vacuum adsorption roller.

[0103] In some embodiments, the transport unit further includes a first deflection corrector 72. The first deflection corrector 72 is connected to the active roller 71, and a controlled end of the first deflection corrector 72 is connected to an output end of the controller. In this embodiment, the first deflection corrector 72 is used to correct the position of the metal foil on the active roller 71, thereby ensuring the position accuracy of the metal foil.

[0104] In some embodiments, the tension detection unit includes a tension roller and a tension detection sensor. The tension roller is arranged between the unwinding unit 1 and the coating unit 2 and / or between the coating unit 2 and the drying unit 3 and / or between the conveying unit and the compounding unit. The tension detection sensor is arranged on the tension roller, and the signal output end of the tension detection sensor is connected to the signal input end of the controller.

[0105] In some embodiments, the unwinding unit 1, the coating unit 2 and the drying unit 3 are provided in pairs, and the compounding unit is provided in pairs. A pressing point is provided on the compounding unit.

[0106] As the number of metal foil layers increases, the hardness of the composite metal foil increases. After the metal foil is bent, there is a certain gap between the two adjacent metal foils. If the metal foil is pressed at the bent position, the problem of insufficient bubble removal is likely to occur, resulting in cavitation in the composite metal foil after pressing, and the composite metal foil is easy to bend when it is bent, which seriously affects the quality of the composite metal foil. In order to solve this technical problem, the multi-layer metal foil of this embodiment is pressed at the pressing point to form a metal foil composite layer. The pressing points on each composite unit are on the same straight line. When the metal foils on both sides are pressed, the composite unit 4 can fully contact the metal foils on both sides, effectively discharge the bubbles between the metal foils, and then ensure the quality of the composite metal foil. At the same time, such an arrangement can also keep the speed of the metal foil unchanged before and after pressing.

[0107] In some embodiments, in combination Figure 2 As shown, the unwinding unit 1 includes an unwinding roller 11, a splicing platform 13 and a second deflection corrector 12. The unwinding roller 11 is connected to the unwinding roller driver. The splicing platform 13 is arranged at the discharge end of the unwinding roller 11, and the splicing platform 13 is used to receive the metal foil released by the unwinding roller 11. Receiving rollers 14 are arranged on both sides of the splicing platform 13, wherein the receiving rollers 14 are driven rollers. The second deflection corrector 12 is arranged on the receiving roller 14, and is used to correct the position of the metal foil on the receiving roller 14, so as to ensure that the metal foil will not be deflected during the transportation process, thereby ensuring the performance of the prepared multi-layer metal foil.

[0108] In some embodiments, in combination Figure 3As shown, the coating unit 2 includes a pressure roller 21, a pressure roller adjustment mechanism, a micro-concave roller coating assembly and a micro-concave roller coating assembly adjustment mechanism. The pressure roller 21 is coaxially connected with a pressure roller driving member, and a metal foil is wound around the bottom end of the pressure roller 21. The pressure roller adjustment mechanism is connected to the pressure roller 21 and is used to adjust the position of the pressure roller 21. The micro-concave roller coating assembly is arranged directly below the pressure roller 21 and is used to apply the slurry to the metal foil wound around the bottom of the pressure roller 21. The micro-concave roller coating assembly adjustment mechanism is connected to the micro-concave roller coating assembly and is used to adjust the position of the micro-concave roller coating assembly. In the present embodiment, the pressure roller 21 and the micro-concave roller coating assembly cooperate with each other to achieve the coating of the metal foil.

[0109] More specifically, the micro-concave roller coating assembly includes a micro-concave roller 22 and a slurry pool 25. The slurry is contained in the slurry pool 25. The bottom portion of the micro-concave roller 22 is arranged in the slurry pool 25. A metal foil conveying gap is formed between the micro-concave roller 22 and the pressure roller 21. The metal foil enters from the metal foil conveying gap between the micro-concave roller 22 and the pressure roller 21. The pressure roller 21 drives the micro-concave roller 22 to rotate when rotating. The micro-concave roller 22 coats the slurry in the slurry pool 25 onto the bottom surface of the metal foil when rotating.

[0110] The pressure roller adjustment mechanism includes a third cylinder 26, a pressure roller connecting plate 27, and a rotating shaft 28. The fixed end of the third cylinder 26 is hingedly arranged on the inner wall of the box body 10, the piston rod end of the third cylinder 26 is hingedly arranged with one end of the pressure roller connecting plate 27, the pressure roller connecting plate 27 is rotatably arranged on the inner wall of the box body 10 through the rotating shaft 28 and the bearing, and the pressure roller 21 is rotatably arranged at the other end of the pressure roller connecting plate 27. Therefore, the pressure roller adjustment mechanism can be used to control the spacing between the pressure roller 21 and the micro-concave roller coating assembly, so as to control the coating thickness. The specific adjustment method is: by controlling the piston rod length of the third cylinder 26 to control the swing of the pressure roller connecting plate 27, when the swing position of the pressure roller connecting plate 27 is different, the size of the metal foil conveying gap between the pressure roller 21 and the micro-concave roller 22 can be adjusted.

[0111] The micro-concave roller coating assembly adjustment mechanism includes a micro-concave roller fixing frame 29, a slide rail 210 and a micro-concave roller fixing frame driving member, wherein the micro-concave roller 22 is rotatably arranged on the micro-concave roller fixing frame 29, the micro-concave roller fixing frame 29 is slidably arranged on the slide rail 210, and the slide rail 210 is positioned on the inner wall of the box body 10. The telescopic end of the micro-concave roller fixing frame driving member is connected to the micro-concave roller fixing frame 29, and is used to drive the micro-concave roller fixing frame 29 to slide along the slide rail 210.

[0112] Taking the example of tension rollers being respectively arranged between the unwinding unit 1 and the coating unit 2, between the coating unit 2 and the drying unit 3, and between the conveying unit and the compounding unit, the tension roller between the unwinding unit 1 and the coating unit 2, the micro-concave roller coating assembly, and the tension roller between the coating unit 2 and the drying unit 3 form a wrap angle less than 90 degrees.

[0113] In some embodiments, the drying unit 3 includes a plurality of linearly arranged ovens 31, and a plurality of support rollers 32 are disposed in the ovens 31. The support rollers 32 are spaced apart from each other and their top ends are in the same plane. The metal foil coated with the slurry is supported by the support rollers 32 and dried in the ovens 31.

[0114] In some embodiments, the multilayer metal foil production equipment further includes a protective film unwinding unit 8 and a protective film composite unit 404. The protective film unwinding unit 8 is used to release the protective film, and the protective film unwinding unit 8 includes a protective film unwinding roller 81 and a protective film unwinding driving member connected to the protective film unwinding roller 81. The protective film composite unit 404 is arranged between the composite unit group and the winding unit 5, and the protective film composite unit 404 is used to composite the protective film with the metal foil composite layer output from the composite unit group. In this embodiment, the protective film can be unwound by the protective film unwinding unit 8, and then the protective film can be composited with the metal foil composite layer by the protective film composite unit 404, and the formed metal foil composite layer is effectively protected by the protective film.

[0115] In some embodiments, the protective film composite unit 404 and the composite unit group are on the same straight line. As an alternative embodiment, the protective film composite unit 404 and the composite unit group form an angle.

[0116] In some embodiments, in combination Figure 6 As shown, the winding unit 5 includes a winding roller 51 and a winding extrusion mechanism. The winding roller 51 is connected to a winding roller driver, which is a motor or other driving device. The winding extrusion mechanism contacts the metal foil composite layer on the winding roller 51 and can extrude the metal foil composite layer.

[0117] In some embodiments, the winding and squeezing mechanism includes a first driving member, a pressure block 57, a first roller 55, a squeezing roller 52, and a second driving member. The first driving member has a telescopic end and a fixed end, and the fixed end of the first driving member is hingedly arranged on the box body 10. More specifically, the first driving member is a first cylinder 54, and the second driving member is a second cylinder 56. The pressure block 57 is connected to the telescopic end of the first driving member and moves under the drive of the first driving member. The first roller 55 is rotatably arranged on the pressure block 57. The squeezing roller 52 is connected to the first roller 55 through a connecting plate 53. The second driving member has a telescopic end, and the telescopic end of the second driving member is hingedly connected to the connecting plate 53. Above the winding roller 51, a squeezing roller 52 is driven by the second cylinder 56 to press on the top to prevent warping when changing rolls and cutting.

[0118] In some embodiments, in combination Figure 5As shown, the composite unit 4 includes a hot roller 41 and a composite pressure roller 42. The composite pressure roller 42 is a rubber roller, and the central axes of the hot roller 41 and the composite pressure roller 42 are arranged in the same plane. The position of the composite pressure roller 42 is adjusted by a composite pressure roller adjustment mechanism. The composite pressure roller adjustment mechanism includes a fourth cylinder 43 and a composite pressure roller connecting plate 44. The fixed end of the fourth cylinder 43 is hingedly arranged on the inner wall of the box body 10, the piston rod end of the fourth cylinder 43 is hingedly connected to one end of the composite pressure roller connecting plate 44, the middle part of the composite pressure roller connecting plate 44 is rotatably arranged on the inner wall of the box body 10, and the other end of the composite pressure roller connecting plate 44 is rotatably connected to the composite pressure roller 42.

[0119] In this embodiment, when the piston rod of the fourth cylinder 43 is extended or retracted, it can drive the composite pressure roller connecting plate 44 to swing, thereby adjusting the distance between the hot roller 41 and the composite pressure roller 42, so as to meet the requirements of the composite of different layers of metal foil. The specific lamination process of the composite unit 4 is: the fourth cylinder 43 pushes the rubber roller to be pressed on the hot roller, so as to achieve the lamination of different layers of metal foil.

[0120] In some embodiments, when there are multiple composite units 4, the hot rollers 41 in the remaining composite units 4 located below the first composite unit 4 are coated with a flexible material layer. Both sides of the pressing points of the remaining composite units 4 except the first composite unit 4 are made of flexible materials, which is conducive to bubble removal and pressing under a higher pressure, improves the pressing quality, and reduces damage to the composite metal foil.

[0121] In some embodiments, at least one second roller 23 is disposed between the coating unit 2 and the drying unit 3. Figure 4 As shown, the intermediate film unwinding unit 6 includes an intermediate film unwinding roller 61 and a third roller 62 . The intermediate film unwinding roller 61 is connected to the intermediate film unwinding roller driving member. A tension roller 9 is also provided between the intermediate film unwinding roller 61 and the composite unit 4 .

[0122] The specific embodiments of the present invention are described in detail below in conjunction with the method for producing a multi-layer metal foil according to the second aspect of the present invention.

[0123] Taking the case where four pairs of unwinding units 1, coating units 2 and drying units 3 are provided, and four composite units 4 are provided as an example, the multi-layer metal foil production method of this embodiment is explained. The multi-layer metal foil produced in this embodiment includes 7 layers of metal foil and 6 layers of coating layers arranged alternately, and the multi-layer metal foil is then composited with a layer of protective film before being rolled up. Therefore, the multi-layer metal foil production equipment is provided with 3 coating units (i.e., coating devices) on each side of the composite unit group. The four composite units in this embodiment are arranged in sequence from top to bottom, wherein the first composite unit 401, the second composite unit 402, and the third composite unit 403 are on the same vertical line, and an obtuse angle is formed between the third composite unit 403 and the protective film composite unit 404 to avoid bending of the composite metal foil.

[0124] This embodiment discloses a method for producing a multilayer metal foil, comprising the following steps:

[0125] The metal foil enters the coating unit 2 from the unwinding unit 1, and the coating unit 2 applies the slurry to the bottom surface of the metal foil. The metal foil is turned over by the pressure roller 21 of the coating unit 2, the second roller 23, and the tension roller 9 between the coating unit 2 and the drying unit 3, so that the position of the bottom of the metal foil coated with the slurry faces upward.

[0126] The metal foil enters the drying unit 3 , and the drying unit 3 dries the slurry on the metal foil.

[0127] The metal foil enters the first composite unit 401. There are an unwinding unit 1 and two conveying units 7 in front of the first composite unit 401. The metal foil coated by the coating unit 2 on one side and then dried by the drying unit 3 is transported by the conveying unit 7, and enters the first composite unit 401 together with the intermediate film (also a metal foil) released by the intermediate film unwinding unit 6 and the metal foil coated by the coating unit 2 on the other side and then dried by the drying unit 3. The first composite unit 401 presses the intermediate film and the metal foil with coatings on both sides to form a three-layer composite metal foil.

[0128] The metal foil coated by the coating units 2 on both sides and dried by the drying unit 3 is transported by the transport unit 7 and enters the second composite unit 402 with the three-layer composite metal foil to continue to be composited to form a five-layer composite metal foil.

[0129] The metal foil coated by the coating units 2 on both sides and dried by the drying unit 3 is transported by the transport unit and enters the third composite unit 403 with the five-layer composite metal foil to form a seven-layer composite metal foil.

[0130] The seven-layer composite metal foil and the protective film enter the protective film composite unit 404 for further composite.

[0131] Finally, the winding unit 5 winds up the seven layers of composite metal foil.

[0132] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A multi-layer metal foil production device, characterized in that: include: An unwinding unit group, comprising at least one pair of unwinding units (1); A coating unit group, comprising at least one pair of coating units (2), each of the coating units (2) corresponding to a discharge end of the unwinding unit (1) and used for coating the metal foil released by the unwinding unit (1); A drying unit group, comprising at least one pair of drying units (3) located on both sides, each of the drying units (3) corresponding to a discharge end of a coating unit (2) and used for drying the metal foil coated by the coating unit (2); An intermediate film unwinding unit (6), used for releasing the intermediate film; A composite unit group, comprising at least one composite unit (4), wherein the composite unit (4) is arranged at the discharge end of the drying unit (3), and the composite unit (4) is used to press the metal foil dried by the drying unit (3) on one side, the intermediate film released by the intermediate film unwinding unit (6), and the metal foil dried by the drying unit (3) on the other side into a metal foil composite layer; A winding unit (5) is arranged at the discharge end of the composite unit group, the winding unit (5) is connected to the metal foil composite layer output by the composite unit group and is used to collect the metal foil composite layer; A conveying device, comprising at least one pair of conveying units, wherein the conveying units are arranged between the drying unit (3) and the compounding unit (4); a tension detection unit, arranged between the unwinding unit (1) and the coating unit (2) and / or between the coating unit (2) and the drying unit (3) and / or between the conveying unit and the compounding unit (4); The controller is used to receive the detection information of the tension detection unit and control the rotation speed of the conveying device or the unwinding unit group based on the detection information so as to make the speed of the metal foil entering the composite unit (4) consistent.

2. The multi-layer metal foil production equipment according to claim 1, characterized in that: The transport unit comprises: An active roller (71) on which a metal foil is sleeved; An active roller driver is connected to the active roller (71), and a controlled end of the active roller driver is connected to an output end of the controller.

3. The multi-layer metal foil production equipment according to claim 2, characterized in that: The active roller (71) is a vacuum adsorption roller or a rubber roller.

4. The multi-layer metal foil production equipment according to claim 2, characterized in that: The transport unit further comprises: A first deflection corrector (72) is connected to the active roller (71), a controlled end of the first deflection corrector (72) is connected to the output end of the controller, and the first deflection corrector (72) is used to perform position deflection correction on the metal foil on the active roller (71).

5. The multi-layer metal foil production equipment according to claim 1, characterized in that: The tension detection unit comprises: a tension roller, arranged between the unwinding unit (1) and the coating unit (2) and / or between the coating unit (2) and the drying unit (3) and / or between the conveying unit and the compounding unit (4); A tension detection sensor is arranged on the tension roller, and a signal output end of the tension detection sensor is connected to a signal input end of the controller.

6. The multi-layer metal foil production equipment according to claim 1, characterized in that: The unwinding unit (1), the coating unit (2) and the drying unit (3) are provided in multiple pairs, and the compounding unit (4) is provided in multiple pairs; The composite unit is provided with pressing points, and the multiple layers of metal foil are pressed together at the pressing points to form the metal foil composite layer, and the pressing points on each composite unit are on the same straight line.

7. The multi-layer metal foil production equipment according to claim 6, characterized in that: The composite unit (4) comprises a hot roller (41) and a composite pressure roller (42), and the distance between the hot roller (41) and the composite pressure roller (42) is adjustable; The hot rollers (41) in the remaining composite units (4) located below the first composite unit (4) are coated with a flexible material layer on the outside.

8. The multi-layer metal foil production equipment according to any one of claims 1 to 7, characterized in that: The multi-layer metal foil production equipment also includes: A protective film unwinding unit (8), used for releasing the protective film; A protective film composite unit (404) is arranged between the composite unit group and the winding unit (5), and the protective film composite unit (404) is used to composite the protective film with the metal foil composite layer output from the composite unit group.

9. The multi-layer metal foil production equipment according to claim 8, characterized in that: The protective film composite unit (404) and the composite unit group are located on the same straight line; Or an angle is formed between the protective film composite unit (404) and the composite unit group.

10. The multi-layer metal foil production equipment according to any one of claims 1 to 7, characterized in that: The winding unit (5) comprises: A winding roller (51) connected to a winding roller driver; The winding and squeezing mechanism is in contact with the metal foil composite layer on the winding roller (51) and is capable of squeezing the metal foil composite layer; the winding and squeezing mechanism comprises a first driving member, a pressure block (57), a first passing roller (55), a squeezing roller (52) and a second driving member, the pressure block (57) is connected to the telescopic end of the first driving member, the first passing roller (55) is rotatably arranged on the pressure block (57), the squeezing roller (52) and the first passing roller (55) are connected via a connecting plate (53), and the telescopic end of the second driving member is hinged to the connecting plate (53).

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