CN218796907U - Gravure roller mechanism and coating module - Google Patents

Abstract

The utility model relates to a gravure roller mechanism, include: the outer surface of the roller sleeve is provided with pits, and the interior of the roller sleeve is hollow; and a magnetic field generating device accommodated in the roller shell; the magnetic field generating device comprises a microwave generator and a magnetic field enhancing element, wherein the magnetic field enhancing element is circumferentially arranged outside the microwave generator, the microwave generator emits microwaves to the circumferential magnetic field enhancing element, and the microwaves in the magnetic field enhancing element are reflected to form a magnetic field in the magnetic field enhancing element; the two adjacent magnetic field enhancement elements are jointed or close to each other to be similar to the jointing, so that the magnetic fields in the two magnetic field enhancement elements are folded and superposed to form a strong magnetic field, and the roller sleeve is positioned in the strong magnetic field. The utility model discloses still relate to a coating module. Magnetic fields formed by microwaves in two adjacent magnetic field enhancement elements are superposed to form a strong magnetic field, the strong magnetic field can ionize gas on the surface of the roller sleeve to endow the roller sleeve with hydrophilicity, and the magnetic field generation device is accommodated in the roller sleeve, so that the structure of the gravure roller mechanism is more compact.

Description

Gravure roller mechanism and coating module

Technical Field

The utility model relates to a battery processing field especially relates to a gravure roller mechanism, still relates to a coating module.

Background

In the preparation process of the battery, a coating needs to be coated on the surface of the composite current collector, and the coating mainly comprises a mixed solution of carbon materials such as conductive graphite, graphene or carbon nano tubes and water. The coating method adopted at present is gravure roll coating, coating is contained in a pit through the rotation of a gravure roll with a small pit, and then the coating is coated on a composite current collector passing through the surface of the gravure roll. However, the inventors found the following problems when coating the paint using the existing gravure roll:

due to the limitation of the gravure roller, the coating is easy to drip from the gravure roller, so that the coating is difficult to be uniformly attached to the gravure roller. Specifically, firstly, because of the difference in curvature of the pits on the gravure roller, if the coating is thin, the coating is difficult to adhere to and be accommodated in the pits with small curvature on the gravure roller, and the coating is dropped from the gravure roller; secondly, the gravure roll is exposed in the atmosphere, dust in the atmosphere can be attached to the gravure roll, when the coating is attached to the gravure roll, the adsorption force between the dust and the gravure roll is weak, and if the weight of the dust is increased due to the attachment of the coating to the dust, the dust and the coating are dripped from the gravure roll. Due to the reasons, the coating is unevenly distributed on the gravure roller, and the coating is unevenly coated on the composite current collector, so that the problem of influencing the product quality is caused.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a gravure roll mechanism and a coating module for solving the problem of dripping of a coating material from a gravure roll.

In a first aspect, the present application provides a gravure roller mechanism, comprising:

the roller sleeve is hollow inside; and

a magnetic field generating device accommodated in the roller sleeve;

the magnetic field generating device comprises a microwave generator and at least two magnetic field enhancing elements, wherein the magnetic field enhancing elements are circumferentially arranged on the outer side of the microwave generator, the microwave generator emits microwaves to the circumferential magnetic field enhancing elements, and the microwaves in the magnetic field enhancing elements are reflected to form a magnetic field in the magnetic field enhancing elements;

the two adjacent magnetic field enhancement elements are jointed or close to each other to be similar to the jointing, so that the magnetic fields in the two magnetic field enhancement elements are folded and superposed to form a strong magnetic field, and the roller sleeve is positioned in the strong magnetic field.

In the gravure roller mechanism in the embodiment, the microwaves generated by the microwave generator are trapped in the magnetic field enhancement element, the microwaves in the magnetic field enhancement element are reflected to form a magnetic field, and the magnetic fields in the magnetic field enhancement element are mutually overlapped to form a strong magnetic field, so that the strong magnetic field exists on the outer surface of the roller sleeve, the magnetic field generation device is accommodated in the gravure roller, a redundant part is avoided, the whole structure is more compact, and the roller sleeve is coated outside the magnetic field generation device to better protect the magnetic field generation device.

In addition, standing waves are formed in the magnetic field enhancement element after the microwaves trapped in the magnetic field enhancement element are reflected, the standing waves generate heat through resonance, when the magnetic field enhancement element is close to each other, the magnetic field position deviates, so that the heat in the magnetic field enhancement element is transferred to the edge, the heat in the magnetic field enhancement element is transferred to the roller sleeve, the temperature of the roller sleeve is improved, and then the heat is transferred to the composite current collector, and the subsequent processing efficiency is improved.

In one embodiment, the magnetic field enhancement element has a diameter no less than the wavelength of the microwaves generated by the microwave generator.

In one embodiment, the outer walls of two adjacent magnetic field enhancement elements are arranged tangentially.

In one embodiment, a rotating cylinder frame is further arranged between the roller sleeve and the microwave generator, and the magnetic field enhancing element is arranged on the rotating cylinder frame.

In one embodiment, the microwave generator, the rotating drum stand and the roller sleeve are arranged in concentric circles.

In one embodiment, one end of the rotating barrel frame is provided with an interface, the interface is used for connecting a driving part, a sliding rail for accommodating the magnetic field enhancement element is arranged in the rotating barrel frame, and the magnetic field enhancement element can move along the sliding rail;

the driving part drives the lower rotating barrel frame to rotate, and the magnetic field enhancement elements move in the sliding rail under the action of centrifugal force, so that the two adjacent magnetic field enhancement elements are mutually collided and attached.

In one embodiment, one end of the roller sleeve is provided with a shaft hole for connecting the driving part, the other end of the roller sleeve is provided with a yielding hole, and the connector penetrates through the yielding hole.

In a second aspect, the present application provides a coating module comprising: the outer surface of the gravure roller mechanism is positioned in a strong magnetic field;

the driving part is used for driving the gravure roller mechanism to rotate;

and the air injection device is positioned above the gravure roller mechanism and used for injecting non-polymeric gas towards the outer surface of the gravure roller mechanism, and the non-polymeric gas is ionized by a strong magnetic field and grafted on the outer surface of the gravure roller mechanism.

In the coating module in the above embodiment, the magnetic field is formed on the outer surface of the gravure roller mechanism by itself, so that the magnetic field ionizes the non-polymerizable gas ejected from the air pump, and active groups such as polar groups and free radicals are grafted on the outer surface of the gravure roller mechanism, so that the hydrophilicity of the gravure roller mechanism is changed, the adsorption force of the gravure roller mechanism on the coating is improved, and the uniformity of the coating on the surface of the gravure roller mechanism is ensured. Meanwhile, the air pump sprays air flow to the surface of the gravure roller mechanism, so that dust attached to the gravure roller mechanism is blown away conveniently, and the gravure roller mechanism is cleaned.

In one embodiment, the air injection device comprises at least two air pumps, and the air pumps are distributed along the axial direction of the gravure roll mechanism.

In one embodiment, the gravure printing device further comprises two racks, the gravure roller mechanism is erected between the two racks, a support rod is rotatably connected between the racks, and the air pumps are mounted on the support rod.

Drawings

Fig. 1 is a schematic perspective view of a coating module according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a cross-sectional view of a coating module according to an embodiment of the present invention;

fig. 4 is a partial front view of a coating module according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of an intaglio roller mechanism according to an embodiment of the present invention;

fig. 6 is a half-sectional schematic view of an intaglio roller mechanism at a first viewing angle according to an embodiment of the present invention;

FIG. 7 is an enlarged partial view of FIG. 6 at B;

fig. 8 is a half-sectional view of an intaglio roller mechanism at a second viewing angle according to an embodiment of the present invention;

fig. 9 is a partially enlarged schematic view of C in fig. 8.

Reference numerals:

11. an air injection device;

111. an air pump; 112. a support bar;

1111. a nozzle;

12. a roller sleeve;

121. a first half roller body; 122. a second half roller body; 123. a first end face; 124. a second end face;

1231. a shaft hole;

1241. a hole of abdication;

13. a first motor;

14. a second motor;

15. a magnetic field generating device;

151. a microwave generator; 152. rotating the barrel frame; 153. a magnetic field enhancing element;

1521. a horn port; 1522. a slide rail;

16. a frame;

161. a side plate; 162. a connecting rod;

17. and a shaft sleeve.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In the preparation process of the battery, a nano carbon coating process is required, namely coating the coating on the surface of the composite current collector and then heating. The paint is formed by mixing a carbon material and a solution, wherein the carbon material comprises conductive graphite, graphene or carbon nano tubes and the like. The carbon material in the coating can improve the conductivity and the binding force between the composite current collector and the anode material or the cathode material. The coating mode adopted at present is gravure coating, the part of a gravure roller with smaller pits rotates to a carbon coating equipment box body containing coating, the coating of the box body is taken out through the pits, and then the coating is coated on a composite current collector passing through the surface of the gravure roller, so that the coating and printing on the surface of a substrate are realized. However, when the coating is applied to the existing gravure roll, due to the difference of the microstructure or curvature, the coating is unevenly distributed under the microscopic view angle, so that some parts of the coating are deficient, and the corresponding other parts of the coating are concentrated, or the coating in some areas cannot be tightly attached to the surface of the gravure roll due to the unclean surface of the gravure roll. On one hand, the coating which is closely attached to the surface of the gravure roller when the gravure roller rotates is splashed outwards under the action of centrifugal force, on the other hand, the coating is limited by the adsorption force on the gravure roller and is dripped and leaked downwards under the influence of the gravity of the coating, so that the coating on the gravure roller is uneven, and the quality of a product is affected by the unevenness of the coating on the composite current collector. Wherein the paint splashed outwards wastes raw materials and pollutes carbon coating equipment.

In some embodiments, referring to fig. 1, the present application provides a coating module including a gravure roll mechanism, a driving part, and an air jet device 11. Wherein, the gravure roller mechanism is positioned in a strong magnetic field; the driving part is used for driving the gravure roller mechanism to rotate. The gas injection device 11 injects non-polymerizable gas towards the outer surface of the gravure roll mechanism, the non-polymerizable gas is ionized by the strong magnetic field, and plasma is connected (grafted) on the outer surface of the gravure roll mechanism in parallel.

In the scheme, the non-polymeric gas ejected by the strong magnetic field ionization air jet device 11 can form plasma polymers on the outer surface of the gravure roller mechanism, so that the outer surface of the gravure roller mechanism is hydrophilic, the adsorption force of the gravure roller mechanism on liquid is further improved, the coating is prevented from being separated from the gravure roller mechanism under the influence of centrifugal force and gravity when the gravure roller mechanism rotates, the coating in a local area of the gravure roller mechanism is prevented from dripping or splashing outwards, and the uniformity of the coating on the gravure roller mechanism is ensured. Further, the air jet device 11 jets air toward the gravure roll mechanism, and dust adhering to the gravure roll mechanism can be blown off by the air flow jetted by the air jet device 11 to play a role of cleaning the gravure roll mechanism.

Specifically, the non-polymerizable gas ejected from the gas ejecting device 11 is ionized by a strong magnetic field to form plasma. The plasma forms a new bond on the surface of the gravure roller mechanism to endow the surface of the gravure roller mechanism with new properties, and the principle is that energy particles in the plasma can generate a crosslinking reaction with the surface of the gravure roller mechanism to generate active groups such as polar groups and free radicals on the surface of the gravure roller mechanism, and the plasma is highly crosslinked (grafted) on the gravure roller mechanism. Plasma polymer formed by crosslinking (grafting) of the plasma on the gravure roller mechanism is of a net structure, so that the gravure roller mechanism obtains properties such as hydrophilicity, thermal stability, chemical stability, mechanical strength, membrane permeability, biocompatibility and the like. The grafted chain has stable chemical property, and the copolymerization of the plasma and the gravure roller mechanism can ensure that the surface of the gravure roller mechanism has hydrophilicity.

And with further reference to fig. 2 and 4, the coating module further includes two frames 16, the frames 16 including side plates 161. The gravure roll mechanism and the connecting rod 162 are mounted on the side plate 161 so that the gravure roll mechanism frame is provided between the two frames 16. The drive section is disposed within the housing 16. A support rod 112 is rotatably connected between the frames 16, the air injection device 11 comprises at least two air pumps 111, and a plurality of air pumps 111 are mounted on the support rod 112. The axial direction of the support rod 112 is arranged in parallel with the axial direction of the gravure roll mechanism so that a plurality of air pumps 111 are arranged along the axial direction of the gravure roll mechanism.

The air pumps 111 correspondingly spray towards different parts of the gravure roller mechanism, so that plasma polymers are uniformly formed on the gravure roller mechanism, the surface of the gravure roller mechanism is ensured to have hydrophilicity, the coating attached to the gravure roller mechanism can be distributed more uniformly, the coating can be more firmly attached to the gravure roller mechanism in the rotating process, and the coating is not easy to get rid of and take off. In addition, the support rod 112 is rotatably connected to the frame 16, and the air pump 111 mounted on the support rod 112 can rotate along with the support rod 112. Referring to fig. 3, the air pump 111 is provided with a spray nozzle 1111, the spray nozzle 1111 faces the gravure roll mechanism, and the rotation of the support rod 112 can adjust the spray angle of the spray nozzle 1111 facing the gravure roll mechanism so that the air pump 111 precisely sprays the air to the depressionsVersion roller mechanism. In the scheme, the non-polymeric gas can be He, ar or O ₂ 、CO ₂ 、NH ₃ 、H ₂ The density of the non-polymerizable gas varies between different types of gases, which causes the non-polymerizable gas to be ejected from the air pump 111 in different ways. Preferably, the different non-polymerizing gases can be guaranteed to be accurately sprayed to the gravure roll mechanism by adjusting the spraying angle of the nozzle 1111.

More specifically, the air jet device 11 is provided above the gravure roll mechanism; the box body in the carbon coating equipment is arranged below the gravure roller mechanism. The lower cambered surface of the gravure roller mechanism is positioned in the box body, and the lower cambered surface can carry paint out of the box body. The air pump 111 is directed toward the upper arc of the gravure roll mechanism so that the non-polymerizing gas falls on the upper arc of the gravure roll mechanism. It can be understood that the upper arc surface of the gravure roller mechanism is a semi-arc surface at the top in the vertical direction of the gravure roller mechanism when rotating; when the upper cambered surface of the gravure roller mechanism rotates, the upper cambered surface and the lower cambered surface of the gravure roller mechanism change after rotating on the semi-cambered surface at the bottom in the vertical direction of the gravure roller mechanism, the original upper cambered surface rotates to the bottom after rotating by 180 degrees to serve as a new lower cambered surface, and the original lower cambered surface rotates to the top to serve as a new upper cambered surface.

When the coating module transmits the composite current collector, the composite current collector passes through the air injection device 11 and is attached to the gravure roller mechanism, the composite current collector can be continuously subjected to carbon coating processing on the gravure roller mechanism, and meanwhile, the air injection device 11 continuously injects air towards the gravure roller mechanism. Preferably, the gas injection device 11 injects gas towards the position where the gravure roll mechanism is tangent to the composite current collector, so that the plasma electrically isolated from the strong magnetic field on the gravure roll mechanism can also be crosslinked on the composite current collector, thereby endowing the surface of the composite current collector with new properties.

In some embodiments of the present application, the gravure roll mechanism includes a roll sleeve 12 and a magnetic field generating device 15. Pits are distributed on the outer surface of the roller sleeve 12, coating can be contained in the pits, and the roller sleeve 12 is hollow. The magnetic field generator 15 is provided in the hollow space of the roll shell 12, and a strong magnetic field for ionizing the non-polymerizable gas is formed on the surface of the roll shell 12 via the magnetic field generator 15.

Specifically, referring to fig. 5 and 6, the magnetic field generating device 15 includes a microwave generator 151 and at least two magnetic field enhancing elements 153, and the magnetic field enhancing elements 153 are circumferentially arranged outside the microwave generator 151. The microwaves generated by the microwave generator 151 are trapped in the magnetic field enhancing element 153, the microwaves of at least one wavelength trapped in the magnetic field enhancing element 153 can be reflected at the edge of the magnetic field enhancing element 153, standing waves are formed inside the magnetic field enhancing element 153, and the standing waves in the magnetic field enhancing element 153 can form a magnetic field by resonance, and the magnetic field intensity is stronger at a central position closer to the magnetic field enhancing element 153. When two adjacent magnetic field enhancement elements 153 are close to each other to be attached or close to each other, the magnetic fields in the magnetic field enhancement elements 153 are attracted to each other and folded, the magnetic field with the maximum intensity in the magnetic field enhancement elements 153 is shifted from the central position of the magnetic field enhancement elements 153 to the position where the two magnetic field enhancement elements 153 are attached, so that the magnetic fields are overlapped to form a strong magnetic field, and the strong magnetic field is diffused to the outer surface of the roller sleeve 12. When the non-polymeric gas is enabled to face the roller sleeve 12 through the strong magnetic field, the non-polymeric gas is firstly contacted with the strong magnetic field to be ionized into plasma, and the plasma can be close to the roller sleeve 12 and crosslinked on the surface of the roller sleeve 12.

It should be noted that, in this embodiment, at least two sets of magnetic field enhancement elements 153 form the same number of strong magnetic fields, and since the magnetic field enhancement elements 153 are disposed on the outer side of the circumference of the microwave generator 151, a plurality of strong magnetic fields are disposed on the outer side of the circumference of the microwave generator 151, and a plurality of strong magnetic fields are disposed on different positions of the roller sleeve 12.

Wherein, when two adjacent magnetic field enhancement elements 153 are jointed, the outer walls of two adjacent magnetic field enhancement elements 153 are arranged tangentially; and the adjacent two magnetic field enhancement elements 153 are attached approximately such that the interval between the adjacent two magnetic field enhancement elements 153 is less than one microwave wavelength. When the distance between two adjacent magnetic field enhancement elements 153 is close enough, the magnetic fields in the two magnetic field enhancement elements 153 can interact with each other to attract each other, so that the two magnetic fields are superposed to improve the magnetic induction intensity, i.e., a strong magnetic field is formed.

In this embodiment, the magnetic fields in the magnetic field enhancement element 153 can be superimposed to increase the strength of the magnetic field, and the roller sleeve 12 is located in the magnetic field to ionize the gas. And because the magnetic field generating device 15 is accommodated in the roller sleeve 12, the arrangement of magnetic field generating equipment outside the gravure roller structure is avoided, the gravure roller structure is more compact in the scheme, redundant parts are avoided, and the floor area of the coating module is reduced. Meanwhile, the roller sleeve 12 is coated on the periphery of the magnetic field generating device 15, and the magnetic field generating device 15 can avoid the magnetic field generating device 15 from colliding through the coating of the roller sleeve 12, so that the magnetic field generating device 15 is better protected, and the service life of the magnetic field generating device 15 is prolonged.

On the other hand, the microwaves are reflected within the magnetic field enhancement elements 153, and the magnetic field intensity at the center position of the magnetic field enhancement elements 153 is maximized while the standing waves within the magnetic field enhancement elements 153 can also increase the heat by resonance, and more specifically, the heat within the magnetic field enhancement elements 153 will be concentrated at the center position, so that the temperature increase amplitude at the center of the magnetic field enhancement elements 153 is maximized. This principle is similar to a microwave oven, where the temperature rise within the magnetic field enhancing element 153 is associated with the location of the magnetic field increase within the magnetic field enhancing element 153, i.e. the temperature rise is higher at locations where the magnetic field strength within the magnetic field enhancing element 153 is higher. When the two magnetic field enhancement elements 153 are attached together, the magnetic field of the magnetic field enhancement elements 153 is shifted and concentrated on the contact point of the two magnetic field enhancement elements 153, and the heat in the magnetic field enhancement elements 153 is concentrated on the contact point of the two magnetic field enhancement elements 153, so that the heat is more easily diffused from the inside of the magnetic field enhancement elements 153 to the outside, and the surface temperature of the roller shell 12 is increased. Since the coating on the surface of the composite current collector in the nano carbon coating process needs to be heated, the heating module needs to heat the composite current collector for a period of time when the composite current collector is raised to a preset temperature. In the scheme, the heat on the roller sleeve 12 is transferred to the composite current collector, and the composite current collector can be preheated, so that the composite current collector can rise to the temperature required by the carbon coating process more quickly, and the carbon coating efficiency is improved.

It is understood that the diameter of the magnetic field enhancement element 153 is not less than the wavelength of the microwaves generated by the microwave generator 151 so as to trap at least one full wavelength of microwaves in the magnetic field enhancement element 153. In this embodiment, since the transmission speed of the microwave in the magnetic field enhancement element 153 is related to the material of the magnetic field enhancement element 153, specifically, if the transmission speed of the microwave in the magnetic field enhancement element 153 is reduced, the wavelength of the microwave in the magnetic field enhancement element 153 is also reduced, so that the diameter of the magnetic field enhancement element 153 is not limited to be smaller than the wavelength of the microwave generated by the microwave generator 151, and the purpose of forming the magnetic field by the reflection resonance of the microwave in the magnetic field enhancement element 153 can be achieved only if the diameter of the magnetic field enhancement element 153 is not smaller than one wavelength of the microwave in the magnetic field enhancement element 153.

Preferably, the diameter of the magnetic field enhancing element 153 is equal to the wavelength of the microwaves. The microwave inside the magnetic field enhancement element 153 is reflected at the edge position of the magnetic field enhancement element 153 to form a magnetic field.

The magnetic field enhancing element 153 and the roller sleeve 12 are made of high-temperature resistant inorganic materials, so that microwaves or magnetic fields can be diffused into the magnetic field enhancing element 153 and the roller sleeve 12, and the microwaves enter the magnetic field enhancing element 153 or the strong magnetic fields pass through the roller sleeve 12 to form strong magnetic fields on the outer surface of the roller sleeve 12. Meanwhile, when the magnetic field enhancing element 153 and the roller sleeve 12 made of high-temperature resistant inorganic materials are ionized, the magnetic field enhancing element 153 and the roller sleeve 12 can ensure stability and avoid damage, because the magnetic field enhancing element 153 and the roller sleeve 12 generate a large amount of heat during ionization, the temperature of the magnetic field enhancing element 153 and the roller sleeve 12 is sharply increased, and in order to avoid the influence of the temperature on the stability of the magnetic field enhancing element 153 and the roller sleeve 12, the magnetic field enhancing element 153 and the roller sleeve 12 are made of inorganic materials.

More specifically, the magnetic field enhancement member 153 has a roll shape, the length of the magnetic field enhancement member 153 corresponds to the length of the microwave generator 151, and the microwaves generated in the microwave generator 151 can be transferred into the magnetic field enhancement member 153 located around the microwave generator 151. When the circular outer contours of two adjacent magnetic field enhancement elements 153 are in contact, the two magnetic field enhancement elements 153 are arranged tangentially, so that the magnetic field enhancement elements 153 are in contact with the tangent point, the magnetic fields in the two magnetic field enhancement elements 153 are deviated to the tangent point, and the two magnetic fields are more concentrated, so that the intensity of the strong magnetic field formed after the magnetic fields are superposed is stronger.

It is understood that the shape of the magnetic field enhancement element 153 includes, but is not limited to, a roller shape, and the magnetic field enhancement element 153 may alternatively be a sphere shape. If the magnetic field enhancement elements 153 are spherical structures, for example, the magnetic field enhancement element subsets are formed by a plurality of magnetic field enhancement elements 153 circumferentially arranged on the microwave generator 151, the number of the magnetic field enhancement element subsets is at least two, the magnetic field enhancement element subsets are arranged along the axis of the roller sleeve 12, and meanwhile, two adjacent magnetic field enhancement element subsets need to be separated from each other, so that the magnetic field enhancement elements 153 in the two magnetic field enhancement element subsets are prevented from contacting each other, the magnetic field enhancement elements 153 in each magnetic field enhancement element subset independently generate a magnetic field superposition effect, and a plurality of groups of magnetic field enhancement element subsets are used to form a plurality of strong magnetic fields so that different positions of the roller sleeve 12 are located in different strong magnetic fields, and the distribution of the strong magnetic fields on the roller sleeve 12 is more uniform.

Further, a rotating cylinder frame 152 is provided between the roller shell 12 and the magnetic field generating device 15, and a magnetic field enhancing element 153 is mounted on the rotating cylinder frame 152. Wherein, the rotating barrel frame 152 is a barrel-shaped structure, the microwave generator 151 is arranged in the hollow interior of the rotating barrel frame 152, and the roller sleeve 12 is covered outside the rotating barrel frame 152. In addition, the rotating drum stand 152 is provided with an installation position of the magnetic field enhancement element 153, and the magnetic field enhancement element 153 is limited on the rotating drum stand 152 by installing the magnetic field enhancement element 153 on the installation position.

In a preferred embodiment, the magnetic field enhancement elements 153 are fixed to the rotating gantry 152 such that the outer walls of two adjacent magnetic field enhancement elements 153 are arranged tangentially, and the two magnetic field enhancement elements 153 are in contact with each other, so as to maximize the single set of magnetic fields formed by resonance between the two magnetic field enhancement elements 153.

In another preferred embodiment, referring to fig. 7, a slide rail 1522 for accommodating the magnetic field enhancement element 153 is disposed in the rotating cartridge holder 152, and the magnetic field enhancement element 153 can move along the slide rail 1522. The driving part can drive the roller sleeve 12 to rotate and can drive the rotating barrel frame 152 to rotate. When the driving part drives the rotating drum bracket 152 to rotate, the magnetic field enhancement elements 153 slide relative to the rotating drum bracket 152 under the influence of centrifugal force, so that the magnetic field enhancement elements 153 are continuously thrown and collide and contact with each other. During which part of the magnetic field enhancing elements 153 gradually come closer to resonate the microwaves within the magnetic field enhancing elements 153.

Specifically, as shown in fig. 5 and 6, the roller sleeve 12 includes a first end surface 123 and a second end surface 124 that are disposed opposite to each other, wherein a shaft hole 1231 is disposed on the first end surface 123, and an output shaft of the driving portion is connected in the shaft hole 1231 so as to drive the roller sleeve 12 to rotate. Meanwhile, one end of the rotary drum frame 152 is provided with an interface for connecting with a driving part.

Illustratively, the microwave generator 151, the rotating drum stand 152, and the roll mantle 12 are arranged in concentric circles. The microwave generator 151, the rotary barrel frame 152 and the roller sleeve 12 are arranged in a clearance fit manner. As shown in fig. 1, the driving unit includes a first motor 13 and a second motor 14, and the first motor 13 and the second motor 14 are accommodated in the two frames 16. Wherein, the output shaft of the first motor 13 is connected to the shaft hole 1231, and the output shaft of the second motor 14 is connected to the interface, so that the roller sleeve 12 can rotate relative to the rotary barrel frame 152. If the driving portion drives the rotating cylinder frame 152 and the roller sleeve 12 to move synchronously, the magnetic field intensity on the surface of the roller sleeve 12 remains unchanged, the roller sleeve 12 is used for transmitting the composite current collector, the composite current collector is continuously transmitted forward by using the roller sleeve 12, and the driving portion needs to drive the roller sleeve 12 to keep unidirectional rotation so as to realize unidirectional transmission. Meanwhile, the rotating cylinder frame 152 rotates unidirectionally along with the roller sleeve 12, so that the magnetic field enhancement elements 153 finally tend to keep the rotating cylinder frame 152 stationary under the action of centrifugal force, the intensity of the magnetic field formed between the magnetic field enhancement elements 153 is kept unchanged, and the hydrophilic performance of the surface of the roller sleeve 12 is kept unchanged.

It will be appreciated that the hydrophilic properties of the sleeve 12 need to be matched to the product film material and coating composition of the composite current collector surface. Generally, the greater the magnetic field strength, the greater the energy of the ionized gas, and the more hydrophilic the surface of the sleeve 12. However, if the hydrophilicity is too high, the force of the coating material adhering to the surface of the roll shell 12 becomes too large, and the coating material is hard to be transferred to the product film, which affects the coating effect. Therefore, the magnetic field intensity on the surface of the roller sleeve 12 needs to be matched with the material of the product film and the components of the coating. For example, when the coating is relatively thin, then a relatively strong magnetic field is required on the roll shell 12; when the coating is thick, a weaker magnetic field is required on the roll shell 12.

Therefore, in the present embodiment, the rotating barrel frame 152 is driven by the independent second motor 14, so as to control the rotating barrel frame 152 to adjust the rotating speed and the rotating direction, so that the magnetic field enhancing element 153 continuously separates and impacts during the rotating process of the rotating barrel frame 152, thereby controlling the magnetic field intensity on the roller sleeve 12. At the same time, the magnetic field enhancing elements 153 are under the action of centrifugal force, and a single group of magnetic fields are formed among the magnetic field enhancing elements 153, so that the roller sleeve 12 is covered by the strong magnetic fields more uniformly. Wherein the roller shell 12 and the rotating barrel frame 152 can rotate at different speeds, so that the same position of the roller shell 12 can be covered under different strong magnetic fields. For example, the roll shell 12 may rotate faster than the rotating drum stand 152, allowing a single high magnetic field to pass over more of the outer surface of the roll shell 12, thereby crosslinking the plasma over a greater area of the outer surface of the roll shell 12 with the high magnetic field. The rotation of the rotating barrel frame 152 can enable the magnetic field enhancement elements 153 to be more uniformly distributed on the inner wall of the roller sleeve 12 under the action of centrifugal force, so that the areas covered by the strong magnetic fields are not overlapped, the ionization areas of the strong magnetic fields are prevented from being overlapped when the ionization areas of the strong magnetic fields are enlarged, the uniformity of cross-linked plasma of the roller sleeve 12 is ensured, and the ionization efficiency of the strong magnetic fields is improved.

In addition, if the rotating barrel stand 152 does not rotate, the magnetic field enhancing members 153 are gathered at the bottom of the rotating barrel stand 152 by their own weight, which causes the magnetic field on the roll shell 12 to be concentrated at the bottom of the roll shell 12, so that the magnetic field on the roll shell 12 is not uniform. In order to improve the hydrophilicity of the surface of the composite current collector, the magnetic field on the roller sleeve 12 also needs to cross-link plasma on the surface of the composite current collector on the roller sleeve 12, and when the magnetic field on the roller sleeve 12 is concentrated at the bottom of the roller sleeve 12, the efficiency of ionizing the non-polymeric gas by the magnetic field is influenced, and the efficiency of plasma cross-linking (grafting) to the composite current collector is further influenced.

When the rotating barrel frame 152 rotates, the sliding rail 1522 of the magnetic field enhancement element 153 moves in the rotating barrel frame 152, and compared with the fact that the rotating barrel frame 152 does not rotate, the magnetic field on the roller sleeve 12 is distributed more uniformly, and therefore the hydrophilicity of the surface of the roller sleeve 12 is more uniform, the magnetic field strength of the top area of the roller sleeve 12 is improved, the magnetic field ionization efficiency of the top area of the roller sleeve 12 is improved, and plasma is conveniently crosslinked on the surface of the composite current collector.

Illustratively, the slide rail 1522 in the rotating barrel frame 152 is a closed cavity, the magnetic field enhancement elements 153 are accommodated in the slide rail 1522, and the slide rail 1522 is filled with inert gas, so that when two adjacent magnetic field enhancement elements 153 are attached, the gas in the closed cavity is prevented from being ionized by the magnetic fields in the two magnetic field enhancement elements 153. The filled inert gas can prevent ionization from damaging the magnetic field enhancement element 153, and the service life of the magnetic field enhancement element 153 is prolonged.

Further, as shown in fig. 5 and with reference to fig. 9, the other end of the roll shell 12 (i.e., the second end surface 124) is provided with a relief hole 1241, and the seam passes through the relief hole 1241. Specifically, a trumpet port 1521 is provided as an interface at one end of the rotary barrel holder 152, the trumpet port 1521 extends outward from the end surface of the rotary barrel holder 152 in the axial direction of the rotary barrel holder 152, and the trumpet port 1521 extends out of the second end surface 124. As shown in fig. 2, a shaft sleeve 17 is disposed between the second end surface 124 and the second electric motor 14, and the horn port 1521 is connected to the output shaft of the second electric motor 14 through the shaft sleeve 17. Illustratively, the flared port 1521 has a gradually decreasing cross-sectional area along the extending direction, so that the flared port 1521 can be plugged onto the sleeve 17. Meanwhile, the trumpet port 1521 is hollow inside. When the roller sleeve 12 and the rotating drum frame 152 rotate, the microwave generator 151 arranged at an interval with the rotating drum frame 152 is kept still, and the power line of the microwave generator 151 extends out of the gravure roller structure through the hollow of the horn port 1521, so as to avoid the problem that the power line of the microwave generator 151 is wound due to rotation. It should be noted that the microwave generator 151 is not limited to be connected to an external ac power source through a power line, and may be powered by a dc power source such as a storage battery, and the storage battery is accommodated in the gravure roller structure, so that the problem of wire winding can be avoided. A wireless transmitting module and a wireless receiving module can be configured by supplying power through the storage battery, a working or pause instruction signal sent by the wireless transmitting module is transmitted to the wireless receiving module through a medium, and the wireless receiving module controls whether the storage battery supplies power to the microwave generator 151 or not according to the working or pause instruction signal, so that the microwave generator 151 can be switched on and off conveniently.

In some embodiments of the present application, as shown in fig. 5, the roller sleeve 12 includes a first half roller 121 and a second half roller 122, the first half roller 121 and the second half roller 122 are spliced to form the roller sleeve 12, and the first half roller 121 and the second half roller 122 are configured to be conveniently detached. After the magnetic field generating device 15 is installed in the first half roller body 121 or the second half roller body 122, the other half structure of the roller sleeve 12 is assembled, and then the assembling step of the gravure roller structure is completed, so that the gravure roller structure can be conveniently repaired and maintained.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A gravure roll mechanism, comprising:

the roller sleeve is hollow inside; and

a magnetic field generating device housed in the roller shell;

the magnetic field generating device comprises a microwave generator and at least two magnetic field enhancing elements, wherein the magnetic field enhancing elements are circumferentially arranged on the outer side of the microwave generator, the microwave generator emits microwaves to the circumferential magnetic field enhancing elements, and the microwaves in the magnetic field enhancing elements are reflected to form a magnetic field in the magnetic field enhancing elements;

and the two adjacent magnetic field enhancement elements are jointed or close to each other to be similar to the jointing, so that the magnetic fields in the two magnetic field enhancement elements are folded and superposed to form a strong magnetic field, and the roller sleeve is positioned in the strong magnetic field.

2. The gravure roll mechanism of claim 1 wherein the magnetic field enhancing element has a diameter that is no less than the wavelength of the microwaves generated by the microwave generator.

3. The gravure roll mechanism of claim 2, wherein the outer walls of adjacent magnetic field enhancing elements are arranged tangentially.

4. The gravure roll mechanism as claimed in claim 2, wherein a rotating drum is further provided between the roller sleeve and the microwave generator, and the magnetic field enhancing element is mounted on the rotating drum.

5. The gravure roller mechanism of claim 4, wherein the microwave generator, the rotating drum stand, and the roller sleeve are arranged in concentric circles.

6. The gravure roller mechanism of claim 4, wherein the rotating drum frame is provided with an interface at one end thereof, the interface is used for connecting a driving part, a slide rail for accommodating the magnetic field enhancing element is arranged in the rotating drum frame, and the magnetic field enhancing element can move along the slide rail;

the rotating barrel frame rotates under the driving of the driving part, and the magnetic field enhancement elements move in the sliding rails under the action of centrifugal force, so that the two adjacent magnetic field enhancement elements are mutually collided and attached.

7. The gravure roller mechanism according to claim 6, wherein one end of the roller sleeve is provided with a shaft hole for connecting the driving portion, the other end of the roller sleeve is provided with a abdicating hole, and the interface passes through the abdicating hole.

8. A coating module, comprising: the outer surface of the gravure roller mechanism is positioned in a strong magnetic field;

the driving part is used for driving the gravure roller mechanism to rotate;

and the air injection device is positioned above the gravure roller mechanism and used for injecting non-polymerizable gas towards the outer surface of the gravure roller mechanism, and the non-polymerizable gas is ionized by the strong magnetic field and grafted on the outer surface of the gravure roller mechanism.

9. The coating module according to claim 8, wherein the air-jet device comprises at least two air pumps, and a plurality of the air pumps are arranged along the axial direction of the gravure roll mechanism.

10. The coating module of claim 9 further comprising two frames, said gravure roll mechanism being disposed between said two frames, said frames further having a support bar rotatably coupled therebetween, a plurality of said air pumps being mounted on said support bar.

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