CN117884321A - Coating dislocation correction equipment, coating system and correction control method - Google Patents
Coating dislocation correction equipment, coating system and correction control method Download PDFInfo
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- CN117884321A CN117884321A CN202410295015.9A CN202410295015A CN117884321A CN 117884321 A CN117884321 A CN 117884321A CN 202410295015 A CN202410295015 A CN 202410295015A CN 117884321 A CN117884321 A CN 117884321A
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- 238000000576 coating method Methods 0.000 title claims abstract description 305
- 239000011248 coating agent Substances 0.000 title claims abstract description 300
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 121
- 239000013072 incoming material Substances 0.000 claims abstract description 62
- 239000011149 active material Substances 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 16
- 230000033001 locomotion Effects 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 description 24
- 230000005540 biological transmission Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 9
- 239000002002 slurry Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 230000001960 triggered effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1015—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Coating Apparatus (AREA)
Abstract
The embodiment of the application provides a coating dislocation correction device, a coating system and a correction control method. The coating dislocation rectifying device comprises: a coating roll for tensioning and transporting the substrate; the first offset recognition device is used for detecting the incoming material offset of the substrate in a first direction before coating, and the first direction is perpendicular to the conveying direction of the substrate; a coating die disposed opposite to and spaced apart from the coating roller to coat the active material on the substrate transported by the coating roller; the driving mechanism is connected with the coating die head and can drive the coating die head to move along a first direction according to the feeding offset. According to the application, under the condition that the incoming material of the base material deviates, the coating die head is corrected, so that the base material and the coating die head are kept aligned, the deviation of an active material layer on the coated base material is reduced, and the product yield is improved.
Description
Technical Field
The application relates to the technical field of battery manufacturing, in particular to coating dislocation correction equipment, a coating system and a correction control method.
Background
This section provides merely background information related to the present disclosure and is not necessarily prior art.
In the production process of the anode pole piece, slurry made of carbon powder (graphite powder) and other materials needs to be uniformly coated on the pole piece by using a coating die head, but when the pole piece is laterally deviated in the coating process, the relative position between the pole piece and the die head is changed in the lateral direction, so that a coating area deviates from a preset coating area, and the left edge and the right edge of an active material layer coated by the pole piece are misplaced.
Disclosure of Invention
The application aims to provide a coating dislocation correcting device, a coating system and a correcting control method, which are used for correcting coating dislocation and reducing coating offset. The aim is achieved by the following technical scheme:
In a first aspect, an embodiment of the present application provides a coating misalignment correction apparatus, including: a coating roll for tensioning and transporting a substrate; the first offset recognition device is used for detecting the incoming material offset of the substrate along a first direction before coating, and the first direction is perpendicular to the conveying direction of the substrate; a coating die disposed opposite to and spaced apart from the coating roller to coat an active material on a substrate transferred by the coating roller; and the driving mechanism is connected with the coating die head and can drive the coating die head to move along the first direction according to the incoming material offset.
In the scheme, when the substrate is offset along the first direction in the coating process, the first offset recognition device is used for detecting the incoming material offset of the substrate before coating, and the driving mechanism is used for driving the coating die head to move along the first direction according to the incoming material offset, so that the substrate and the coating die head are always aligned, the offset of an active material layer on the substrate after coating relative to a preset coating area is reduced, the coating deviation correcting effect is improved, and the product quality is improved.
In some embodiments, the drive mechanism includes a base and a movable member, one of the base and the movable member being provided with a first sliding structure extending in the first direction, the other of the base and the movable member being provided with a second sliding structure in sliding connection with the first sliding structure.
In the scheme, the base is matched with the moving part in a sliding fit mode, so that the moving part can move along the first direction, and the moving process of the moving part is more stable and accurate by utilizing the limit fit of the first sliding structure and the second sliding structure, so that the shaking of the coating die head relative to the base material is reduced, and the coating die head can still ensure higher coating quality in the deviation correcting process.
In some embodiments, the base carries the moving member and has a sliding engagement surface in sliding engagement with the moving member, and the drive mechanism further includes a seal member disposed annularly about the sliding engagement surface.
In the scheme, the sealing piece is arranged on the sliding fit surface in a surrounding manner, the sealing piece is used for blocking external foreign matters (such as dust particles and the like), the probability that the external foreign matters enter the sliding fit surface is reduced, the sliding fit surface is kept smooth by intervening between the moving piece and the base, therefore, the relative sliding process between the moving piece and the base is smoother, the probability of jamming is reduced, the abrasion between the moving piece and the base is reduced, and the service life of the driving mechanism is prolonged.
In some embodiments, the sealing member is configured as an annular flexible member, and two ends of the sealing member are respectively connected with the moving member and the base along a direction perpendicular to the sliding fit surface so as to seal a sliding fit gap between the moving member and the base.
In the scheme, in the process that the moving part slides relative to the base, the sealing part can conform to the movement of the moving part along the circumferential direction of the sealing part, and the sealing part can be tightly attached to the moving part and the base all the time, so that a good sealing effect is maintained.
In some embodiments, the drive mechanism further comprises a servo motor and a transmission assembly, wherein the servo motor is in transmission connection with the moving member through the transmission assembly.
In the scheme, the servo motor can accurately control the moving distance of the moving part according to the incoming material offset, so that the deviation rectifying accuracy of the coating die head and the deviation rectifying effect of coating are improved, and the product quality is improved.
In some embodiments, the coating offset correction apparatus further includes a second offset recognition device electrically connected to the driving mechanism, the second offset recognition device being configured to detect a coating offset of the active material layer on the substrate along the first direction, and the driving mechanism driving the coating die to move according to the feed offset and the coating offset.
In the above scheme, the second deviation recognition device is used for detecting the coating deviation amount of the active material layer on the substrate after the coating die head is coated, wherein the coating deviation amount is the actual deviation amount of the active material layer relative to the preset coating area, and the deviation correcting deviation data of the coating die head can be calculated according to the incoming material deviation amount and the coating deviation amount, so that the deviation correcting process of the next coating die head can be compensated and corrected according to the incoming material deviation amount and the coating deviation amount, and the deviation correcting accuracy of the coating die head in the next deviation correcting process is improved.
In a second aspect, the present application provides a coating system comprising: according to the coating dislocation correcting device and the control device in the technical scheme of the first aspect, the control device is electrically connected with the first deviation identifying device and the driving mechanism in the coating dislocation correcting device. In the scheme, the control device is utilized to realize automatic control of the coating dislocation deviation rectifying equipment, so that automation of deviation rectifying control is realized, and the deviation rectifying efficiency is improved.
In a third aspect, the present application provides a deviation rectifying control method for a coating system, the deviation rectifying control method comprising: acquiring the incoming material offset of the substrate in the first direction of the coating front; calculating deviation correction amount according to the incoming material deviation amount being larger than a first deviation threshold value; and controlling the movement of the coating die head in the coating dislocation deviation correcting device according to the deviation correcting quantity.
In the above scheme, when the substrate is offset along the first direction in the coating process, the first offset recognition device is used for detecting the incoming material offset of the substrate before coating, and the control device controls the moving part in the driving mechanism to drive the coating die head to move along the first direction according to the incoming material offset, so that the substrate and the coating die head are always aligned, the offset of an active material layer on the substrate relative to a preset coating area after coating is reduced, the coating deviation correcting effect is improved, and the product quality is improved.
In some embodiments, the drive mechanism in the deviation rectifying device comprises a base and a moving member; before the step of controlling the movement of the coating die head in the coating misalignment correction apparatus according to the amount of misalignment, further comprising: determining a time point when the substrate reaches the coating position from the material detection offset position; the step of controlling the movement of the coating die head in the coating dislocation correcting device according to the correction amount comprises the following steps: and controlling the moving part in the coating dislocation deviation correcting equipment to move according to the time point and the deviation correcting amount, wherein the moving part drives the coating die head to move.
In the scheme, the time point that the material offset position reaches the coating position is detected by calculating the base material, and the moving part is controlled to move according to the time point, so that the moving amount of the coating die head is ensured to be matched with the feeding offset amount, and the correction accuracy of the coating die head is improved.
In some embodiments, the deviation rectifying control method further comprises: acquiring the coating offset of the coating of the substrate after coating along the first direction; calculating a compensation amount according to the coating offset amount being greater than a second offset threshold; and controlling the movement of the coating die head in the coating dislocation correcting device according to the deviation correcting quantity and the compensation quantity. In the scheme, the compensation quantity of the coating die head can be calculated through the feeding offset and the coating offset, and the correction process of the next coating die head is compensated and corrected according to the compensation quantity, so that the correction accuracy of the coating die head in the next correction process is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a coating misalignment correction apparatus according to some embodiments of the present application;
FIG. 2 is a schematic diagram of a driving mechanism according to some embodiments of the present application;
FIG. 3 is a schematic view of a portion of a driving mechanism according to some embodiments of the present application;
FIG. 4 is a block diagram of a coating system according to some embodiments of the present application;
FIG. 5 is a flowchart illustrating a deviation rectification control method according to some embodiments of the present application;
FIG. 6 is a flowchart illustrating a deviation rectification control method according to some embodiments of the present application;
Fig. 7 is a flowchart of a deviation rectifying control method according to some embodiments of the present application.
In the drawings, the drawings are not drawn to scale.
The reference numerals are as follows:
100. Coating dislocation correction equipment;
10. a coating roller;
20. a first offset recognition means;
30. A coating die head;
40. A driving mechanism; 41. a base; 42. a moving member; 43. a servo motor; 44. a transmission assembly; 441. a gear; 442. a rack; 45. a seal; 401. A sliding mating surface;
50. a second offset recognition means;
101. The feeding offset position; 102. a coating position;
200. A coating system; 201. a control device; x-the conveying direction of the substrate and Y-the first direction.
Detailed Description
Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.
In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).
In the description of the embodiments of the present application, 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.
In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "fixed," "attached" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.
Currently, the application of power batteries is more widespread from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, and a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.
In the production process of the anode pole piece, slurry made of carbon powder (graphite powder) and other materials needs to be uniformly coated on the pole piece by using a coating die head, but when the pole piece is laterally deviated in the coating process, the relative position between the pole piece and the die head is changed in the lateral direction, so that a coating area deviates from a preset coating area, and the left edge and the right edge of an active material layer coated by the pole piece are misplaced.
In view of the above, as shown in fig. 1, the present application proposes a coating misalignment correction apparatus 100, the coating misalignment correction apparatus 100 including a coating roller 10, a first misalignment recognition device 20, a coating die 30, and a driving mechanism 40. The first deviation recognition device 20 detects the incoming material deviation amount of the substrate along the first direction, and the moving part 42 in the driving mechanism 40 drives the coating die head 30 to move along the first direction according to the incoming material deviation amount, so that the substrate and the coating die head 30 are always aligned, the deviation amount of an active material layer on the substrate relative to a preset coating area after coating is reduced, the deviation correcting effect of coating is improved, and the product quality is improved.
According to some embodiments of the present application, there is provided a coating misalignment correction apparatus 100, as shown in fig. 1, the coating misalignment correction apparatus 100 including a coating roller 10, a first misalignment recognition device 20, a coating die 30, and a driving mechanism 40. Specifically, the coating roller 10 is used for tensioning and conveying the substrate, and the first deviation recognition device 20 is used for detecting the incoming material deviation amount of the substrate along a first direction before coating, wherein the first direction is perpendicular to the conveying direction of the substrate. The coating die 30 is disposed opposite to and spaced apart from the coating roller 10 in the conveying direction of the substrate to coat the active material on the substrate conveyed by the coating roller 10, and the driving mechanism 40 includes a moving member 42 movable in a first direction, the moving member 42 being connected to the coating die 30, and the driving mechanism 40 driving the moving member 42 to move according to the supply offset.
The coating roll 10 is a cylindrical passing roll matched with the coating die head 30, the substrate is wound around the coating roll 10 and is tensioned by the coating roll 10, and moves along the conveying direction of the substrate under the traction of the coating roll 10, and the conveying direction of the substrate is parallel to the length direction of the substrate. The coating die 30 is provided at one side of the coating roller 10 in the conveying direction of the substrate such that the substrate is positioned between the coating roller 10 and the coating die 30, and the coating die 30 is used to uniformly coat slurry made of a material such as carbon powder (graphite powder) on the pole piece, thereby forming an active material layer on the pole piece.
The coating rod has an incoming side where the substrate is not coated with the slurry and moves toward a direction approaching the coating rod, and an outgoing side where the substrate is coated with the slurry and moves toward a side away from the coating rod, and the first deviation recognition device 20 is provided on the incoming side of the coating roller 10 and on one side of the substrate in a direction perpendicular to the plane of the substrate.
The first offset recognition device 20 is used for detecting an incoming material offset of the substrate along a first direction before coating, wherein the first offset recognition device 20 comprises, but is not limited to, a laser displacement sensor, a CCD detection mechanism and the like, and the CCD (Charge Coupled Device) detection mechanism is a semiconductor imaging device, and the working principle is that an image of the substrate is focused onto a CCD chip through a lens, then the image is processed to form a video signal, video image data of the substrate is output, and the incoming material offset of the substrate along the first direction at different moments can be calculated and measured according to the video image data.
The incoming material offset is offset dimension data of the substrate corresponding to the first offset recognition device 20 with respect to the set area along the first direction. In detail, the setting area is a preset reference area, when the substrate is completely in the setting area, it can be determined that the substrate is not offset, and when the left and right edge areas of the substrate deviate from the setting area, the gap size between the left and right edges of the substrate and the edges of the setting area along the first direction is the feeding offset.
As shown in fig. 1 and 2, the driving mechanism 40 is disposed on one side of the coating roller 10 along the conveying direction of the substrate, the driving mechanism 40 includes a moving member 42, the moving member 42 can move along a first direction, the coating die 30 is mounted on the moving member 42, the driving mechanism 40 can drive the moving member 42 to move along the first direction according to the offset of the incoming material, so as to adjust the relative position of the coating die 30 and the substrate, and the moving member 42 drives the coating die 30 to move, so that the coating die 30 will not contact and rub with other devices in the driving mechanism 40, thereby reducing the wear rate of the coating die 30 in the moving process along the first direction, and improving the service life of the coating die 30. It is understood that the driving mechanism 40 is a mechanism with a linear moving device, the driving mechanism 40 includes, but is not limited to, a crank-rocker mechanism, a rack-and-pinion mechanism, a ball screw mechanism, and a slider link mechanism, and the moving member 42 is a device capable of moving linearly in the driving mechanism 40, for example, if the driving mechanism 40 includes a slider link mechanism, the slider is the moving member 42.
In the above scheme, when the substrate is offset along the first direction during the coating process, the first offset recognition device 20 detects the incoming material offset of the substrate before coating, and the moving member 42 in the driving mechanism 40 drives the coating die 30 to move along the first direction according to the incoming material offset, so that the substrate and the coating die 30 are always aligned, the offset of the active material layer on the substrate relative to the preset coating area after coating is reduced, the deviation correcting effect of coating is improved, and the product yield is improved.
In some embodiments, the driving mechanism 40 includes a base 41 and a moving member 42, one of the base 41 and the moving member 42 is provided with a first sliding structure extending along a first direction, and the other of the base 41 and the moving member 42 is provided with a second sliding structure slidingly connected with the first sliding structure.
In some embodiments, the first sliding structure is a sliding groove (not shown) provided on the base 41, the length direction of the sliding groove is parallel to the first direction, the second sliding structure is a protrusion structure (not shown) provided on the moving member 42, and the protrusion structure is slidably provided in the sliding groove, so as to realize a sliding connection between the base 41 and the moving member 42. In some embodiments, the first sliding structure is a chute provided on the moving member 42, the length direction of the chute is parallel to the first direction, the second sliding structure is a protrusion structure provided on the base 41, and the protrusion structure is slidably provided in the chute, so as to realize sliding connection between the base 41 and the moving member 42. The first sliding structure may be another structure that enables sliding engagement between the base 41 and the movable member 42, which is not shown here.
In the above scheme, the base 41 and the moving member 42 are matched in a sliding fit manner, so that the moving member 42 can move along the first direction, and the moving process of the moving member 42 is more stable and accurate by utilizing the limit fit of the first sliding structure and the second sliding structure, so that the shaking of the coating die head 30 relative to the base material is reduced, and the coating die head 30 can still ensure higher coating quality in the deviation correcting process.
In some embodiments, as shown in fig. 2 and 3, the base 41 is configured to carry a moving member, the base 41 has a sliding surface 401 that slidably engages the moving member, and the driving mechanism 40 further includes a sealing member 45, where the sealing member 45 is disposed around the sliding surface 401 and seals the sliding surface 401.
The sliding engagement surface 401 is an engagement gap between the base 41 and the movable member 42. The sealing member 45 is annular and is sleeved outside the base 41 and the moving member 42, and covers the sliding surface 401, and the sealing member 45 may be formed in a shape of a film, a rubber sleeve, or the like.
In the above-mentioned scheme, by means of the seal member 45 being arranged around the sliding surface 401, the seal member 45 is utilized to block external foreign matters (such as dust particles, etc.), so that the probability of the external foreign matters entering the sliding surface 401 is reduced, the external foreign matters are interposed between the moving member and the base, the process of sliding between the moving member 42 and the base 41 is smoother, the probability of jamming is reduced, the abrasion between the moving member 42 and the base 41 is reduced, and the service life of the driving mechanism 40 is prolonged.
In some embodiments, the sliding gap exists between the moving member and the base due to partial contact between the moving member and the base, and the sealing member is annular and is arranged outside the sliding gap in a surrounding manner and seals the sliding gap, so that the probability of external foreign matters being introduced into the sliding gap is reduced. In this embodiment, a sliding gap is formed between the sliding surface and the moving member.
In some embodiments, as shown in fig. 3, the sealing member 45 is configured as an annular flexible member, and two ends of the sealing member are respectively connected with the moving member and the base in a direction perpendicular to the sliding fit surface, so as to seal a sliding fit gap between the moving member and the base and prevent external foreign matters from entering the sliding fit gap between the moving member and the base.
The material of the sealing member 45 includes, but is not limited to, rubber, polytetrafluoroethylene, and polyester. The sealing element 45 is annular and sleeved outside the base 41 and the moving element 42, and the sealing element 45 is attached to the surfaces of the base 41 and the moving element 42 so as to achieve the sealing effect on the sliding matching surface 401.
In some embodiments, as shown in fig. 1 and 2, the drive mechanism 40 further includes a servo motor 43 and a transmission assembly 44, and the servo motor 43 is in transmission connection with the movable member 42 through the transmission assembly 44.
The servo motor 43 is connected to the moving member 42 through a transmission assembly 44, so that the moving member 42 is driven to slide on the base 41 in the first direction by the servo motor 43. The transmission assembly 44 includes, but is not limited to, a rack and pinion mechanism, a nut screw mechanism, and a slider link mechanism, where the rack and pinion mechanism is taken as an example, the transmission assembly 44 includes a gear and a rack that are meshed with each other, the gear is connected to a rotating shaft of the servo motor 43, the rack is connected to the moving member 42, the servo motor 43 determines a rotation angle of the rotating shaft of the servo motor 43 according to an incoming material offset, the gear is driven to rotate by the rotating shaft, a length direction of the rack is parallel to the first direction, the gear drives the rack to make a linear movement along the first direction, and the rack can drive the moving member 42 to slide on the base 41 along the first direction.
In the above scheme, the servo motor 43 can precisely control the moving distance of the moving member 42 according to the incoming material offset, so as to improve the deviation rectifying accuracy of the coating die head 30 and the deviation rectifying effect of the coating, thereby improving the product quality.
In some embodiments, as shown in fig. 1, the coating offset correction apparatus 100 further includes a second offset recognition device 50 electrically connected to the driving mechanism 40, where the second offset recognition device 50 is configured to detect a coating offset of the active material layer on the substrate along the first direction, and the driving mechanism 40 drives the moving member 42 to move according to the feeding offset and the coating offset.
The second deviation recognition device 50 is provided at the discharge side of the coating roller 10, and the second deviation recognition device 50 is provided at one side of the substrate in a direction perpendicular to the plane of the substrate.
The second offset recognition device 50 is used for detecting the coating offset of the active material layer on the substrate along the first direction after the substrate is coated, wherein the second offset recognition device 50 is a CCD detection mechanism, and the CCD (Charge Coupled Device) detection mechanism is a semiconductor imaging device, and the working principle of the device is that the substrate and the image of the active material layer on the substrate are focused on a CCD chip through a lens, then the image processing is performed to form a video signal, video image data of the substrate and the active material layer on the substrate are output, and according to the video image data, the coating offset can be calculated and measured by comparing the gap distance size between the edge of the substrate and the edge of the active material layer along the first direction according to the gap distance size.
The coating offset refers to offset dimension data of the active material layer with respect to a predetermined coating area along the first direction. In detail, the coating offset is a preset coating area, the edge of the preset coating area is parallel to the edge of the substrate, the gap distance between the edge of the preset coating area and the edge of the substrate is set according to actual requirements, when the active material layer is completely in the preset coating area, the coating is judged to be not offset, and when the left and right edge areas of the active material layer deviate from the preset coating area, the gap size between the left and right edges of the active material layer and the edge of the preset coating area along the first direction is the coating offset.
In the above-mentioned scheme, the second deviation identifying device 50 is configured to detect the coating deviation amount of the active material layer on the substrate after the coating of the coating die 30, where the coating deviation amount is the actual deviation amount of the active material layer relative to the predetermined coating area, and the deviation correcting deviation data of the coating die 30 can be calculated according to the incoming material deviation amount and the coating deviation amount, so that the deviation correcting process of the next coating die 30 can be compensated and corrected according to the incoming material deviation amount and the coating deviation amount, and the deviation correcting accuracy of the coating die 30 in the next deviation correcting process is improved.
According to an embodiment of the present application, there is provided a coating system 200, as shown in fig. 4, the coating system 200 including a coating misalignment correction apparatus 100 and a control device 201, the control device 201 being electrically connected to a first misalignment identification device 20 and a driving mechanism 40 in the coating misalignment correction apparatus 100.
The control device 201 may be a host computer (Supervisory Control and Data Acquisition System, abbreviated as SCADA system), the control device 201 and the coating offset correction device 100 form a host computer system, the control device 201 is a host computer in the host computer system, the first offset recognition device 20 and the driving mechanism 40 in the coating offset correction device 100 are used as a lower computer device in the host computer system, the first offset recognition device communicates with the control device 201 and transmits a data signal of an incoming material offset to the control device 201, the control device 201 processes, displays and generates a control command according to the data of the incoming material offset, and the control device 201 sends the control command to the driving mechanism 40 to drive the moving member 42 to move along the first direction, thereby realizing the correction of the coating die head 30 in the coating offset correction device 100.
In the above scheme, the control device 201 is utilized to automatically control the coating dislocation deviation rectifying device 100, so that the automation of deviation rectifying control is realized, and the deviation rectifying efficiency is improved.
According to an embodiment of the present application, there is also provided a deviation rectifying control method of a coating system, as shown in fig. 5, the deviation rectifying control method includes the following steps:
step S101: acquiring the incoming material offset of the substrate in the first direction of the coating front;
Step S102: calculating deviation correction amount according to the fact that the incoming material deviation amount is larger than a first deviation threshold value;
Step S103: and controlling the movement of the coating die head in the coating dislocation correcting device according to the correction amount.
In step S101, the first deviation identifying device 20 detects the incoming deviation of the substrate along the first direction before coating, and transmits the incoming deviation data to the control device 201 in the form of an electrical signal. The incoming material offset is offset dimension data of the substrate corresponding to the first offset recognition device 20 with respect to the set area along the first direction. For example, the setting area is a preset reference area, when the substrate is completely within the setting area, it may be determined that the substrate is not offset, and when the left and right edge areas of the substrate deviate from the setting area, the gap size between the left and right edges of the substrate and the edges of the setting area along the first direction is the incoming material offset.
In step S102, the value range F of the first offset threshold F is greater than or equal to 0.01mm, for example, the first offset threshold is set to 0.01mm, when the incoming material offset is smaller than the first offset threshold, the deviation rectifying instruction is not triggered, the coating state of the coating dislocation deviation rectifying device 100 remains unchanged, and when the incoming material offset is greater than the first offset threshold, the deviation rectifying amount is calculated. The distance that the moving member 42 is controlled to move along the first direction is determined according to the deviation correcting amount, the deviation correcting amount is the same as the deviation correcting amount of the incoming material, for example, the base material has opposite left side and right side along the first direction, if the deviation correcting amount is that the base material is deviated to the left by 0.02mm along the first direction, the deviation correcting amount is set to be that the moving member 42 is moved to the left by 0.02mm along the first direction, and if the deviation correcting amount is that the base material is deviated to the right by 0.02mm along the first direction, the deviation correcting amount is set to be that the moving member 42 is moved to the right by 0.02mm along the first direction.
In step S103, the control device 201 sends a deviation rectifying instruction to the driving mechanism 40 according to the incoming material deviation amount, and the driving mechanism 40 drives the moving member 42 to move along the first direction according to the deviation rectifying instruction, so that the substrate and the coating die 30 are always aligned, the deviation amount of the active material layer on the substrate relative to the preset coating area after coating is reduced, the deviation rectifying effect of coating is improved, and the product yield is improved.
In some embodiments, as shown in fig. 6, the deviation rectifying control method includes the following steps:
step S201: acquiring the incoming material offset of the substrate in the first direction of the coating front;
Step S202: calculating deviation correction amount according to the fact that the incoming material deviation amount is larger than a first deviation threshold value;
step S203: determining a point in time when the substrate reaches the coating position from the incoming material offset position;
step S204: and controlling the moving part in the coating dislocation correction equipment to move according to the time point and the correction amount, and driving the coating die head to move by the moving part.
In this embodiment, step 201 is the same as step 101, and step 202 is the same as step 102, and will not be described again.
In step S203, the first deviation recognition device 20 and the coating die 30 are disposed at intervals in the conveying direction of the substrate, specifically, the first deviation recognition device 20 is disposed on the incoming material side of the coating roller 10, and along the direction perpendicular to the plane of the substrate, the first deviation recognition device 20 is disposed on one side of the substrate, the incoming material deviation position 101 is the position of the first deviation recognition device 20 opposite to the substrate along the direction perpendicular to the plane of the substrate, the coating position 102 is the position of the substrate contacting the coating die 30, and the incoming material deviation position 101 is spaced from the coating position 102 along the conveying direction of the substrate. In this embodiment, when the first deviation recognition device 20 detects that the incoming material deviation a of the substrate is greater than the first deviation threshold b at the first time t1, and the position of the substrate detected by the first deviation recognition device 20 is the first position at the first time, the first position is the second time t2 when moving from the incoming material deviation position 101 to the coating position 102, the moving member 42 in the driving mechanism 40 is controlled to move along the first direction according to the deviation correction amount c at the second time t2, the moving distance of the moving member 42 is equal to the incoming material deviation a, and the moving direction is the same as the incoming material deviation direction. The second time t2 is a time point when the substrate reaches the coating position 102 from the incoming material offset position 101, and the calculating process of the time point is required to be according to the current coating speed V and the formation L of the substrate from the incoming material offset position 101 to the coating position 102, and the time point t2=t1+l/V.
In step S204, the time point when the substrate reaches the coating position 102 from the incoming material offset position 101 is calculated, so that the coating die 30 can perform accurate deviation correcting movement on time, so as to ensure that the movement amount of the coating die 30 matches with the incoming material offset amount, and further improve the accuracy of deviation correction of the coating die 30.
In some embodiments, as shown in fig. 7, the deviation rectifying control method includes the following steps:
Step S301: acquiring the incoming material offset of the substrate in the first direction of the coating front;
step S302: calculating deviation correction amount according to the fact that the incoming material deviation amount is larger than a first deviation threshold value;
Step S303: determining a point in time when the substrate reaches the coating position 102 from the feed offset position 101;
step S304: controlling the movement of a coating die head in the coating dislocation correction equipment according to the time point and the correction amount;
step S305: acquiring the coating offset of the coating of the substrate along the first direction after coating;
Step S306: calculating a compensation amount according to the coating offset being greater than the second offset threshold;
step S307: and controlling the moving part in the coating dislocation correcting equipment to move according to the deviation correcting quantity and the compensation quantity so as to drive the coating die head to move.
In this embodiment, steps 301 to 304 are the same as steps 201 to 204, and are not described herein.
In step S305, the second offset recognition device 50 is a CCD detection mechanism, where CCD (Charge Coupled Device) detection mechanism is a semiconductor imaging device, and the working principle of the detection mechanism is that the substrate and the image of the active material layer on the substrate are focused onto the CCD chip through the lens, then the image is processed to form a video signal, and video image data of the substrate and the active material layer on the substrate are output, according to the video image data, the coating offset can be calculated and measured by comparing the gap distance between the edge of the substrate and the edge of the active material layer along the first direction according to the gap distance.
In step 306, the value range E of the second offset threshold E is greater than or equal to 0.01mm, in this embodiment, the second offset threshold is set to 0.01mm, when the coating offset is smaller than the second offset threshold, the compensation command is not triggered, the coating state of the coating offset correction device 100 remains unchanged, and when the coating offset is greater than the second offset threshold, the compensation is calculated. The distance that the moving member 42 is controlled to move in the first direction is determined according to the compensation amount, the compensation amount is equal to the coating offset amount, and the direction is opposite to the direction, for example, the substrate has opposite left and right sides in the first direction, if the coating offset amount is that the active material layer is offset to the left by 0.02mm in the first direction, the compensation amount is set to move the moving member 42 to the right by 0.02mm in the first direction, and if the coating offset amount is that the substrate is offset to the right by 0.02mm in the first direction, the compensation amount is set to move the moving member 42 to the left by 0.02mm in the first direction.
In step S307, the deviation rectifying action of the moving member 42 in the driving mechanism 40 is controlled according to the data combining the compensation amount and the deviation rectifying amount, so that the coating die 30 can be dynamically rectified, and the deviation rectifying accuracy of the coating die 30 in the next deviation rectifying process is improved.
In accordance with a specific embodiment of the present application, as shown in fig. 1 to 3, there is provided a coating misalignment correction apparatus 100, the coating misalignment correction apparatus 100 including a coating roller 10, a first misalignment recognition device 20, a second misalignment recognition device 50, a coating die 30, and a driving mechanism 40.
Specifically, the coating roller 10 is used for tensioning and conveying a substrate along a conveying direction of the substrate, the coating roller has an incoming side and an outgoing side, the substrate is not coated with slurry and moves towards a direction close to the coating roller on the incoming side of the coating roller, the substrate is coated with slurry and moves towards a side far away from the coating roller on the outgoing side, the first offset recognition device 20 is arranged on the incoming side of the coating roller 10 and along a direction perpendicular to a plane of the substrate, the first offset recognition device 20 is arranged on one side of the substrate, and the first offset recognition device 20 is used for detecting an incoming offset of the substrate along the first direction before coating, wherein the first offset recognition device 20 comprises, but is not limited to, a laser displacement sensor, a CCD detection mechanism and the like.
The driving mechanism 40 includes a servo motor 43, a transmission assembly 44, a base 41 and a moving member 42, the moving member 42 is slidably connected to the base 41 in a first direction, the coating die 30 is fixedly mounted on the moving member 42 and located at one side of the coating roller 10 in the conveying direction of the substrate, the servo motor 43 is connected to the moving member 42 through the transmission assembly 44, so that the moving member 42 is driven to slide on the base 41 in the first direction by the servo motor 43, the transmission assembly 44 includes but is not limited to a rack-and-pinion mechanism, a nut-and-screw mechanism, a slider-and-link mechanism, and the transmission assembly 44 is used for converting the rotary motion of the servo motor 43 into the linear motion of the moving member 42.
The second offset recognition device 50 is disposed on the discharge side of the coating roller 10, and along the direction perpendicular to the plane of the substrate, the second offset recognition device 50 is disposed on one side of the substrate, and the second offset recognition device 50 is used for detecting the coating offset of the active material layer on the substrate along the first direction after the substrate is coated, wherein the second offset recognition device 50 is a CCD detection mechanism.
The first offset recognition device 20, the second offset recognition device 50 and the servo motor 43 are respectively and electrically connected with an upper computer, the first offset recognition device 20 sends detected incoming material offset data to the upper computer, the upper computer judges whether the obtained incoming material offset exceeds a first offset threshold F (F is more than or equal to 0.01 mm) in real time, and when the incoming material offset does not exceed the first offset threshold, a deviation rectifying instruction is not triggered. When the incoming material offset exceeds the first offset threshold, the deviation rectifying instruction calculation is performed, the time point when the incoming material offset position 101 reaches the coating position 102 is calculated according to the current coating speed and the incoming material offset position 101, the upper computer sends a deviation rectifying time point, deviation rectifying amount and deviation rectifying instruction to the servo motor 43, and the servo motor 43 controls the moving part 42 to move according to the time point and the deviation rectifying amount, so that the coating die head 30 can accurately rectify and move on time.
The second offset recognition device 50 sends the detected coating offset data to the upper computer, and the upper computer judges whether the obtained coating offset exceeds a second offset threshold F (F is more than or equal to 0.01 mm) in real time, and when the coating offset does not exceed the second offset threshold, the compensation instruction is not triggered. When the coating offset exceeds the second offset threshold, a compensation command is performed to calculate the offset, and the servo motor 43 controls the moving member 42 to move according to the offset, so as to adjust and correct the position of the coating die head 30 in real time, and make the next deviation correcting movement more accurate.
In some embodiments, the drive mechanism 40 further includes a seal 45, the seal 45 being disposed around the sliding surface 401 and sealing the sliding surface 401, there being a fit gap between the base 41 and the movable member 42. The sealing member 45 is annular and is sleeved outside the base 41 and the moving member 42, and covers the sliding surface 401, and the sealing member 45 may be formed in a shape of a film, a rubber sleeve, or the like. Through establishing sealing member 45 for the ring at sliding fit face 401, utilize sealing member 45 to block outside foreign matter (such as dust granule etc.), reduce outside foreign matter and get into sliding fit face 401's probability and intervene between moving member and the base, make the process of relative slip between moving member 42 and the base 41 smoother, reduce the probability that the jamming appears to, and still can reduce the wearing and tearing between moving member 42 and the base 41, improve actuating mechanism 40's life.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with others, which may not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. Coating dislocation rectifying equipment, its characterized in that, coating dislocation rectifying equipment includes:
a coating roll for tensioning and transporting a substrate;
the first offset recognition device is used for detecting the incoming material offset of the substrate along a first direction before coating, and the first direction is perpendicular to the conveying direction of the substrate;
A coating die disposed opposite to and spaced apart from the coating roller to coat an active material on a substrate transferred by the coating roller;
and the driving mechanism is connected with the coating die head and can drive the coating die head to move along the first direction according to the incoming material offset.
2. The coating misalignment correction apparatus according to claim 1 wherein the drive mechanism comprises a base and a moving member, one of the base and the moving member being provided with a first sliding structure extending in the first direction, the other of the base and the moving member being provided with a second sliding structure slidingly connected to the first sliding structure.
3. The coating misalignment correction apparatus of claim 2 wherein the base carries the moving member and has a slip fit surface in slip fit with the moving member, the drive mechanism further comprising a seal member that is looped over the slip fit surface.
4. The coating misalignment correction apparatus according to claim 3 wherein the seal is configured as an annular flexible member, and both ends of the seal are respectively connected to the moving member and the base in a direction perpendicular to the sliding fit surface to seal a sliding fit gap between the moving member and the base.
5. The coating misalignment correction apparatus of claim 2 wherein the drive mechanism further comprises a servo motor and a drive assembly, the servo motor being in drive connection with the moving member through the drive assembly.
6. The coating misalignment correction apparatus according to any one of claims 1 to 5 further comprising a second misalignment identification means electrically connected to the drive mechanism, the second misalignment identification means being for detecting a coating misalignment of the active material layer on the substrate in the first direction, the drive mechanism driving the coating die to move in accordance with the incoming misalignment and the coating misalignment.
7. A coating system comprising the coating misalignment correction apparatus according to any one of claims 1 to 6, the coating system further comprising a control device electrically connected to the first misalignment identification device and the drive mechanism in the coating misalignment correction apparatus.
8. A deviation rectifying control method of a coating system, characterized in that the coating system comprises a control device and the coating deviation rectifying apparatus according to any one of claims 1 to 6;
The deviation rectifying control method comprises the following steps:
acquiring the incoming material offset of the substrate in the first direction of the coating front;
Calculating deviation correction amount according to the incoming material deviation amount being larger than a first deviation threshold value;
and controlling the movement of the coating die head in the coating dislocation deviation correcting device according to the deviation correcting quantity.
9. The deviation rectifying control method of the coating system according to claim 8, characterized in that the driving mechanism in the deviation rectifying device includes a base and a moving member;
before the step of controlling the movement of the coating die head in the coating misalignment correction apparatus according to the amount of misalignment, further comprising:
Determining a time point when the substrate reaches the coating position from the material detection offset position;
The step of controlling the movement of the coating die head in the coating dislocation correcting device according to the correction amount comprises the following steps:
And controlling the moving part in the coating dislocation deviation correcting equipment to move according to the time point and the deviation correcting amount, wherein the moving part drives the coating die head to move.
10. The deviation rectifying control method of the coating system according to claim 8, characterized in that the deviation rectifying control method further comprises:
acquiring the coating offset of the substrate on the coated active material layer along the first direction;
Calculating a compensation amount according to the coating offset amount being greater than a second offset threshold;
and controlling the movement of the coating die head in the coating dislocation correcting device according to the deviation correcting quantity and the compensation quantity.
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| CN202410295015.9A CN117884321A (en) | 2024-03-15 | 2024-03-15 | Coating dislocation correction equipment, coating system and correction control method |
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