Positioning and deviation rectifying system and coating equipment

Abstract

The utility model provides a positioning and deviation rectifying system and coating equipment. The positioning and deviation rectifying system comprises a base, a coating die head, a fixing frame, a first detector and a second detector. The coating die head is arranged on the base, the coating die head is arranged in the first direction, and the surface of the coating die head is used for being adjacent to or attached to the surface of the foil; the fixing frame is arranged on the base, the fixing frame is arranged in the first direction, and the fixing frame and the coating die head are arranged in a spaced mode in the second direction; the first detector is arranged on the fixing frame, and the first detector is used for transmitting a first detection signal along a second direction along or towards a first edge of the foil; the second detector and the first detector are arranged on the fixing frame in a spaced mode in the first direction, the second detector is used for emitting a second detection signal along the second direction or towards the second edge of the foil, and the first detector and the second detector are used for detecting the first edge and the second edge of the foil in the first direction correspondingly; and further detecting whether the foil deviates or not so as to rectify the deviation of the foil.

Description

Technical Field

[0001] The present application relates to the field of coating technology, and in particular to a positioning and correction system and coating equipment. Background Art

[0002] In existing coating technologies, if the foil deflects during the coating process, the coated film area also deflects. When double-sided coating is required, the position of one side deflects, causing misalignment between the coated double and single sides, resulting in poor coating dimensions. Therefore, how to more accurately detect foil deflection and promptly correct it becomes a technical challenge. Utility Model Content

[0003] The present application provides a positioning and correction system and coating equipment that can accurately detect the deviation of a foil material so as to facilitate subsequent correction of the foil material.

[0004] In a first aspect, the present application provides a positioning and correction system, the positioning and correction system comprising:

[0005] base;

[0006] A coating die head, the coating die head is disposed on the base, the coating die head is arranged along a first direction, and the surface of the coating die head is used to be adjacent to or in contact with the surface of the foil;

[0007] A fixing frame, the fixing frame is mounted on the base, the fixing frame is arranged along the first direction, the fixing frame and the coating die head are spaced apart along a second direction, and the second direction is perpendicular to the first direction;

[0008] a first detector, the first detector being disposed on the fixing frame, and the first detector being configured to emit a first detection signal along or toward a first edge of the foil material in the second direction;

[0009] A second detector is provided on the fixing frame with an interval between the second detector and the first detector along the first direction. The second detector is used to transmit a second detection signal along the second direction along or toward the second edge of the foil. The second edge of the foil is arranged opposite to the first edge of the foil along the first direction.

[0010] The present application provides a positioning and correction system, which includes a base, a coating die, a fixed frame, a first detector and a second detector. The coating die is arranged on the base, the coating die is arranged along a first direction, and the surface of the coating die is used to be adjacent to or in contact with the surface of the foil; the fixed frame is arranged on the base, the fixed frame is arranged along the first direction, the fixed frame and the coating die are spaced apart along a second direction, and the second direction is perpendicular to the first direction; the first detector is arranged on the fixed frame, the first detector is used to emit a first detection signal along the second direction along or towards the first edge of the foil; the second detector is spaced apart from the first detector on the fixed frame along the first direction, the second detector is used to emit a second detection signal along the second direction along or towards the second edge of the foil, the second edge of the foil is arranged opposite to the first edge of the foil along the first direction, the first detector and the second detector respectively detect the first edge and the second edge of the foil along the first direction, and then detect whether the foil is offset, so as to accurately detect the offset of the foil, so as to facilitate subsequent correction of the foil and improve the coating size accuracy.

[0011] In an optional embodiment, the positioning and correction system further includes a controller and a correction component, the correction component is connected to the foil, the first detector and the second detector are electrically connected to the controller, the first detector and / or the second detector are configured to detect the offset of the foil, and the controller is configured to control the correction component to drive the foil back to the center when the first detector and the second detector detect that the foil is offset.

[0012] In an optional embodiment, the positioning and correction system further includes a controller and a warning indicator, wherein the warning indicator is electrically connected to the controller and is configured to issue a warning indication when the first detector and the second detector detect that the foil is offset.

[0013] In an optional embodiment, the positioning and correction system further includes a driving component, wherein the driving component is connected to the first detector and the second detector, and the driving component is used to drive at least one of the first detector and the second detector to move along the fixed frame.

[0014] In an optional embodiment, the driving assembly includes a first sub-driving member, a first transmission member, a second sub-driving member, and a second transmission member, the first sub-driving member is provided on the fixing frame, the first transmission member is provided along the first direction, the first transmission member is connected to the first sub-driving member, the first transmission member moves along the first direction under the action of the first sub-driving member, and the first detector is provided on the first transmission member;

[0015] The second sub-driving member is arranged on the fixed frame, the second transmission member is arranged along the first direction, the second transmission member is connected to the second sub-driving member, the second transmission member moves along the first direction under the action of the second sub-driving member, and the second detector is arranged on the second transmission member.

[0016] In an optional embodiment, the drive assembly includes a sub-drive member, a transmission belt, a driving wheel and a driven wheel fixed on both sides of the fixed frame, the sub-drive member is arranged on the fixed frame and is coaxially connected to the driving wheel, the two ends of the transmission belt are respectively attached to the outer surface of the driving wheel and the outer surface of the driven wheel, the transmission belt includes a first transmission belt and a second transmission belt located on opposite sides of the driving wheel and the driven wheel, the first detector is connected to the first transmission belt, the second detector is connected to the second transmission belt, and the first detector and the second detector move in opposite directions synchronously.

[0017] In an optional embodiment, the driving assembly includes a dual-axis motor, a first transmission member and a second transmission member, the dual-axis motor is arranged on the fixed frame, the first transmission member and the second transmission member are arranged in sequence along the first direction, one output shaft of the dual-axis motor is connected to the first transmission member, the other output shaft of the dual-axis motor is connected to the second transmission member, the first detector is connected to the first transmission member, the second detector is connected to the second transmission member, and the first detector and the second detector move in opposite directions synchronously.

[0018] In an optional embodiment, the drive assembly includes a sub-drive member, a first gear, a second gear, a first transmission member and a second transmission member, the sub-drive member is arranged on the fixed frame, the output shaft of the sub-drive member is connected to the first gear, the second gear is engaged with the first gear, the output shaft of the first gear is connected to the first transmission member, the output shaft of the second gear is connected to the second transmission member, the first transmission member and the second transmission member are arranged in sequence along the first direction, the first detector is connected to the first transmission member, the second detector is connected to the second transmission member, and the first detector and the second detector move in opposite directions synchronously.

[0019] In an optional embodiment, the first detector includes a one-dimensional laser sensor or a two-dimensional laser sensor, and the second detector includes a one-dimensional laser sensor or a two-dimensional laser sensor; and / or,

[0020] The positioning and correction system also includes at least one third detector, which is arranged on at least one side of the coating die head along the first direction, and the third detector emits a third detection signal toward the edge of the foil along the first direction. The third detector is configured to detect the displacement of the foil along the first direction.

[0021] In a second aspect, the present application also provides a coating device, including the positioning and correction system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments.

[0023] Figure 1 This is a partial schematic diagram of a coating device provided in an embodiment of the present application;

[0024] Figure 2 This is a control signal block diagram of a coating device provided in an embodiment of the present application;

[0025] Figure 3 is a partial schematic diagram of another coating device provided in an embodiment of the present application;

[0026] Figure 4 This is a control signal block diagram of a coating device including a correction component provided in an embodiment of the present application;

[0027] Figure 5 1 is a front view of a first driving component in a positioning and correction system provided in an embodiment of the present application;

[0028] Figure 6 1 is a front view of a second drive component in a positioning and correction system provided in an embodiment of the present application;

[0029] Figure 7 1 is a front view of a third drive component in a positioning and correction system provided in an embodiment of the present application;

[0030] Figure 8 It is a front view of the fourth drive component in a positioning and correction system provided in an embodiment of the present application.

[0031] Description of Figure Numbers:

[0032] Coating device 1000; positioning and correction system 100; base 10; coating die 20; fixing frame 40; first detector 50; second detector 60; first edge 31; second edge 32; first direction X; second direction Y; controller 110; correction assembly 120; third detector 70; fourth detector 80; early warning indicator 130; drive assembly 90; first sub-drive member 91; first transmission member 92; second sub-drive member 93; second transmission member 94; first driving wheel 951; second driving wheel 952; first driven wheel 953; second driven wheel 954; sub-drive member 96; transmission belt 97; first transmission belt 971; second transmission belt 972; driving wheel 981; driven wheel 982; dual-axis motor 990; first gear 991; second gear 992. DETAILED DESCRIPTION

[0033] The technical solution of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described in this application are only some embodiments, not all embodiments. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0034] References to "embodiments" in this application mean 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 appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to mutually exclusive, independent, or alternative embodiments to other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0035] The terms "first," "second," and so on, in the specification and claims of this application and the accompanying drawings are used to distinguish between different objects, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a component or device comprising one or more parts is not limited to the one or more parts listed, but may optionally include one or more parts that are not listed but are inherent to the illustrated product, or one or more parts that should be present based on the described functionality.

[0036] The present application provides a positioning and correction system that can accurately detect the deviation of a foil material and promptly correct the deviation of the foil material. The positioning and correction system can be applied to a coating device 1000.

[0037] The present application also provides a coating device 1000, which includes a positioning and correction system. The coating process is a method of applying a paste polymer, a molten polymer or a polymer melt to paper, cloth, a plastic film, or a metal sheet to obtain a composite material (film). Coating includes but is not limited to blade coating, roller transfer coating, slit extrusion coating, etc. Among them, roller transfer coating is to drive the slurry by the rotation of the coating roller, use the comma scraper gap to adjust the slurry transfer amount, and transfer the slurry to the substrate to form a coating by the rotation of the back roller and the coating roller. This process includes the rotation of the coating roller to drive the slurry through the gap between the metering rollers to form a slurry layer of a certain thickness, and then the coating roller and the back roller rotate in opposite directions to transfer the slurry to the foil to form a coating. This embodiment is illustrated by taking the roller transfer coating device 1000 as an example.

[0038] See also Figure 1 The positioning and deviation correction system 100 includes a base 10, a coating die 20, a fixing frame 40, a first detector 50 and a second detector 60. The positioning and deviation correction system 100 is used to perform positioning and deviation correction on the position of the foil 30.

[0039] In the present application, the first detector 50 and the second detector 60 are taken as examples. In other embodiments, one, three, or more than three detectors may be provided.

[0040] See also Figure 1 The coating die head 20 is disposed on the base 10. The coating die head 20 is disposed along a first direction X. The first direction X is the width direction of the base 10. The surface of the coating die head 20 is configured to be adjacent to or in contact with the surface of the foil 30.

[0041] See also Figure 1 At least a portion of the foil 30 is disposed adjacent to or in contact with the surface of the coating die 20. In this embodiment, the coating die 20 is also referred to as a coating roller. The foil 30 is an extremely thin metal sheet or strip. The slurry applied by the coating die 20 includes, but is not limited to, battery slurry. The substrate formed by the foil 30 after coating includes, but is not limited to, a current collector.

[0042] The foil 30 is extended along a preset trajectory. The present application does not limit the extension trajectory of the foil 30. Optionally, the width direction of the foil 30 corresponds to the width direction of the base 10. The foil 30 is sheet-shaped and forms a certain angle with the surface of the base 10.

[0043] See also Figure 1The foil 30 includes a first edge 31 and a second edge 32 disposed opposite to each other along the first direction X. In this embodiment, the foil 30 includes a first side surface and a second side surface disposed opposite to each other along the first direction X. The first edge 31 is the first side surface, and the second edge 32 is the second side surface. In other embodiments, the first edge 31 is the portion of the front surface of the foil 30 close to the first side surface (for example, 0 to 5 mm, but not limited to this data), and the second edge 32 is the portion of the front surface of the foil 30 close to the second side surface (for example, 0 to 5 mm, but not limited to this data).

[0044] See also Figure 1 The fixing frame 40 is disposed on the base 10. The fixing frame 40 is disposed along the first direction X. The fixing frame 40 and the coating die head 20 are spaced apart along a second direction Y. The second direction Y is perpendicular to the first direction X. The second direction Y is the longitudinal direction of the base 10 and is also the longitudinal direction of the foil 30.

[0045] The first detector 50 is disposed on the fixing frame 40. The first detector 50 is configured to transmit a first detection signal along or toward the first edge 31 of the foil 30 in the second direction Y. The first detector 50 transmits the first detection signal in the second direction Y. The path of the first detection signal is along or coincides with the first edge 31. The first detector 50 is configured to detect whether the foil 30 is deflected.

[0046] The second detector 60 is disposed on the fixing frame 40 spaced apart from the first detector 50 along the first direction X. The second detector 60 is configured to transmit a second detection signal along or toward the second edge 32 of the foil 30 along the second direction Y. The second detector 60 transmits the second detection signal along the second direction Y, with the path of the second detection signal along or coinciding with the second edge 32. The second detector 60 is configured to detect whether the foil 30 is deflected.

[0047] The first detection signal includes but is not limited to infrared light, laser signal, etc. The second detection signal includes but is not limited to infrared light, laser signal, etc.

[0048] Optionally, the first detector 50 and the second detector 60 have the same structure and function. In other embodiments, the structures of the first detector 50 and the second detector 60 may be different.

[0049] In a first alternative embodiment, when the foil 30 is not deflected, the first detector 50 transmits a first detection signal toward the foil 30 along the second direction Y. The transmission path of the first detection signal is located outside the foil 30 and is located in close proximity to the first edge 31 of the foil 30. At this time, the first detector 50 does not receive a reflected signal within the preset distance range (the distance between the foil 30 and the first detector 50). The second detector 60 transmits a second detection signal toward the foil 30 along the second direction Y. The transmission path of the second detection signal is located outside the foil 30 and is located in close proximity to the second edge 32 of the foil 30. At this time, the second detector 60 does not receive a reflected signal within the preset distance range (the distance between the foil 30 and the second detector 60). If the first detector 50 receives a reflected signal within the preset distance range (the distance between the foil 30 and the first detector 50), it indicates that the foil 30 is deflected toward the side of the first detector 50. If the second detector 60 receives a reflected signal within the preset distance range (the distance between the foil 30 and the second detector 60), it indicates that the foil 30 is deflected toward the side of the second detector 60.

[0050] In a second alternative embodiment, when the foil 30 is not deflected, the first detector 50 transmits a first detection signal toward the foil 30 along the second direction Y. The transmission path of the first detection signal passes through the foil 30 and is located proximate to the first edge 31 of the foil 30. In this case, the first detector 50 is able to receive reflected signals within a preset distance range (the distance between the foil 30 and the first detector 50). The second detector 60 transmits a second detection signal toward the foil 30 along the second direction Y. The transmission path of the second detection signal passes through the foil 30 and is located proximate to the second edge 32 of the foil 30. In this case, the second detector 60 is able to receive reflected signals within a preset distance range (the distance between the foil 30 and the second detector 60). If the first detector 50 cannot receive a reflected signal within the preset distance range (the distance between the foil 30 and the first detector 50), it indicates that the foil 30 is deflected toward the side where the second detector 60 is located. If the second detector 60 cannot receive a reflected signal within the preset distance range (the distance between the foil 30 and the second detector 60), it indicates that the foil 30 is deflected toward the side where the first detector 50 is located.

[0051] In a third optional embodiment, when the foil 30 is not deflected, the first detector 50 transmits a first detection signal toward the foil 30 along the second direction Y, and the emission path of the first detection signal is located outside the foil 30 and is arranged adjacent to the first edge 31 of the foil 30. The second detector 60 transmits a second detection signal toward the foil 30 along the second direction Y, and the emission path of the second detection signal passes through the foil 30 and is arranged adjacent to the second edge 32 of the foil 30.

[0052] In a fourth optional embodiment, when the foil 30 is not deflected, the first detector 50 transmits a first detection signal toward the foil 30 along the second direction Y, and the emission path of the first detection signal passes through the foil 30 and is arranged adjacent to the second edge 32 of the foil 30. The second detector 60 transmits a second detection signal toward the foil 30 along the second direction Y, and the emission path of the second detection signal is located outside the foil 30 and is arranged adjacent to the first edge 31 of the foil 30.

[0053] The present application provides a positioning and correction system 100, which includes a base 10, a coating die 20, a foil 30, a fixing frame 40, a first detector 50, and a second detector 60. The coating die 20 is arranged on the base 10, and the coating die 20 is arranged along the first direction X; at least a portion of the foil 30 is adjacent to or in contact with the surface of the coating die 20, and the foil 30 extends along a preset trajectory, and the foil 30 includes a first edge 31 and a second edge 32 that are arranged opposite to each other along the first direction X; the fixing frame 40 is arranged on the base 10, and the fixing frame 40 is arranged along the first direction X, and the fixing frame 40 and the coating die 20 are spaced apart along the second direction Y, and the second direction Y is perpendicular to the first direction X; the first detector 50 is arranged on the fixing frame 40, and the first detector 50 is used to detect the deviation of the coating die 20 along the second direction Y. The first detector 60 emits a first detection signal along or toward the first edge 31 of the foil 30; the second detector 60 is arranged on the fixing frame 40 at an interval along the first direction X with the first detector 50, and the second detector 60 is used to emit a second detection signal along the second direction Y along or toward the second edge 32 of the foil 30. The first detector 50 and the second detector 60 respectively detect the first edge 31 and the second edge 32 of the foil 30 along the first direction X, and then detect whether the foil 30 is deflected, so as to accurately detect the deflection of the foil 30, so as to facilitate the subsequent correction of the foil 30 and improve the coating size accuracy.

[0054] See also Figure 2 The positioning and correction system 100 further includes a controller 110 and a correction component 120. The correction component 120 is connected to the foil 30. The first detector 50 and the second detector 60 are electrically connected to the controller 110. The controller 110 includes but is not limited to a programmable logic controller 110.

[0055] The first detector 50 and / or the second detector 60 are configured to detect the deflection of the foil 30. The controller 110 is configured to control the deflection-correcting assembly 120 to drive the foil 30 to return to the normal position when the first detector 50 and the second detector 60 detect that the foil 30 is deflected.

[0056] Specifically, the first detector 50 includes a one-dimensional laser sensor or a two-dimensional laser sensor. The second detector 60 includes a one-dimensional laser sensor or a two-dimensional laser sensor.

[0057] In an optional embodiment, the first detector 50 includes, but is not limited to, a reflective one-dimensional laser sensor. The second detector 60 includes, but is not limited to, a reflective one-dimensional laser sensor. In a one-dimensional laser sensor, laser light emitted by the emitting element of the laser sensor strikes a point on the foil 30 and is reflected there. The reflected signal is received by the receiving element of the laser sensor, and information such as distance can be collected.

[0058] In this embodiment, the offset of the foil 30 can be obtained by moving one of the detectors or cooperating with other detectors.

[0059] Optional, see Figure 3 The positioning and correction system 100 further includes at least one third detector 70. The third detector 70 is disposed on at least one side of the coating die 20 along the first direction X. The third detector 70 emits a third detection signal along the first direction X toward the edge of the foil 30. The third detector 70 is configured to detect the deflection of the foil 30 along the first direction X.

[0060] Optionally, the third detector 70 emits a third detection signal along the first direction X toward the first edge 31 of the foil 30 and receives a third reflected signal to detect the distance between the third detector 70 and the first edge 31. When the foil 30 is not deflected, the distance between the third detector 70 and the first edge 31 detected by the third detector 70 is a preset value. When the distance between the third detector 70 and the first edge 31 detected by the third detector 70 is greater than or equal to the preset value, it indicates that the foil 30 has deflected. The direction and amount of the deflection of the foil 30 can be determined based on the distance between the third detector 70 and the first edge 31 detected by the third detector 70.

[0061] The controller 110 is configured to control the correcting assembly 120 to drive the foil 30 to return to the center according to the deviation direction and deviation amount of the foil 30 detected by the third detector 70 and the fourth detector, so as to correct the position of the foil 30 in a timely manner.

[0062] Further, see Figure 3The positioning and correction system 100 further includes a fourth detector 80. The fourth detector 80 emits a fourth detection signal along the first direction X toward the second edge 32 of the foil 30 and receives a fourth reflected signal to detect the distance between the fourth detector 80 and the second edge 32. When the foil 30 is not deflected, the distance between the fourth detector 80 and the second edge 32 detected by the fourth detector 80 is a preset value. When the distance between the fourth detector 80 and the second edge 32 detected by the fourth detector 80 is greater than or equal to the preset value, it indicates that the foil 30 has deflected. The direction and amount of the deflection of the foil 30 can be determined based on the distance between the fourth detector 80 and the second edge 32 detected by the fourth detector 80. This further improves the accuracy of detecting the deflection of the foil 30.

[0063] In a second alternative embodiment, the first detector 50 includes, but is not limited to, a two-dimensional laser sensor, and the second detector 60 includes, but is not limited to, a two-dimensional laser sensor. The emitting element of the two-dimensional laser sensor emits a laser light source, which is a linear light source. The linear light source illuminates the foil 30, and the reflected signal is received by the receiving element of the laser sensor to collect two-dimensional profile information. The two-dimensional laser sensor can detect whether the foil 30 is deflected, the direction of the deflection, and the amount of the deflection.

[0064] In this embodiment, the first detector 50 and the second detector 60 can detect whether the foil 30 is deflected, the deflection direction, and the deflection amount.

[0065] The controller 110 is configured to control the correcting assembly 120 to drive the foil 30 to return to the center position according to the deviation direction and deviation amount of the foil 30 detected by the first detector 50 and the second detector 60 , so as to correct the position of the foil 30 in a timely manner.

[0066] See also Figure 4 The positioning and deviation correction system 100 further includes a controller 110 and a warning indicator 130. The warning indicator 130 is electrically connected to the controller 110. The warning indicator 130 is configured to issue a warning when the first detector 50 and the second detector 60 detect that the foil 30 is deviating. The warning indicator 130 includes, but is not limited to, an audible indicator, a light indicator, or a prompt displayed on a display screen.

[0067] In this embodiment, a warning indicator 130 is provided to indicate to the user that the foil 30 has deviated, so that the user can make timely adjustments according to the laser sensor during use.

[0068] See also Figure 5 The positioning and correction system 100 also includes a drive component 90.

[0069] The driving assembly 90 connects the first detector 50 and the second detector 60 . The driving assembly 90 is configured to drive at least one of the first detector 50 and the second detector 60 to move along the fixing frame 40 .

[0070] The driving assembly 90 is used to drive at least one of the first detector 50 and the second detector 60 to move back and forth along the first direction X. On the one hand, it is used to coincide with or be parallel and close to the two edges of the foils 30 of different widths along the first direction X to detect whether the foils 30 of different widths are offset; on the other hand, it can also be used to drive the first detector 50 and / or the second detector 60 to move along the first direction X to detect the offset of the foil 30, so that the subsequent correcting assembly 120 can promptly correct the position of the foil 30 according to the offset of the foil 30.

[0071] In the first alternative embodiment, see Figure 5 The driving assembly 90 includes a first sub-driving member 91 , a first transmission member 92 , a second sub-driving member 93 and a second transmission member 94 .

[0072] The first sub-driving member 91 is disposed on the fixing frame 40. Optionally, the first sub-driving member 91 is disposed on the left side of the fixing frame 40 (with reference to the figure).

[0073] The first detector 50 is disposed on the first transmission member 92. The first transmission member 92 is disposed along the first direction X. The first transmission member 92 is connected to the first sub-driving member 91. The first transmission member 92 moves along the first direction X under the action of the first sub-driving member 91, thereby driving the first detector 50 to move back and forth along the first direction X.

[0074] Optionally, the first sub-driving member 91 includes but is not limited to an electric motor, etc. The first transmission member 92 includes but is not limited to a conveyor belt, a screw rod, etc.

[0075] The second sub-driving member 93 is disposed on the fixing frame 40. Optionally, the second sub-driving member 93 is disposed on the right side of the fixing frame 40 (with reference to the figure).

[0076] The second detector 60 is disposed on the second transmission member 94. The second transmission member 94 is disposed along the first direction X. Furthermore, the second transmission member 94 and the first transmission member 92 are disposed along the first direction X in sequence.

[0077] The second transmission member 94 is connected to the second sub-driving member 93. The second transmission member 94 moves along the first direction X under the action of the second sub-driving member 93, so as to drive the second detector 60 to move back and forth along the first direction X.

[0078] Optionally, the second sub-driving member 93 includes but is not limited to an electric motor, etc. The second transmission member 94 includes but is not limited to a conveyor belt, a screw rod, etc.

[0079] Optional, see Figure 5 The first transmission member 92 and the second transmission member 94 are both conveyor belts. The driving assembly 90 further includes a first driving wheel 951, a second driving wheel 952, a first driven wheel 953 and a second driven wheel 954.

[0080] The first driving wheel 951, the first driven wheel 953, the second driven wheel 954, and the second driving wheel 952 are arranged in sequence. The first transmission member 92, i.e., the first conveyor belt, is sleeved on the outside of the first driving wheel 951 and the first driven wheel 953. The second transmission member 94, i.e., the second conveyor belt, is sleeved on the outside of the second driving wheel 952 and the second driven wheel 954.

[0081] The two motors drive the first driving wheel 951 and the second driving wheel 952 to rotate, thereby driving the first detector 50 and the second detector 60 to move independently. The first detector 50 and the second detector 60 can move in the same direction or in opposite directions, or can move independently.

[0082] In the first application scenario, before coating begins, when the width of the foil 30 is uncertain, the first detector 50 and the second detector 60 can move from the edge positions on both sides (initial positions) toward the center position under the action of two motors, and perform real-time monitoring or detection at a certain frequency during the movement to determine that the edge position of the foil 30 is reached when the reflected signal is received within a certain distance range.

[0083] In the second application scenario, when the foil 30 deviates, the received signal of the first detector 50 changes, for example, from being unable to receive a signal within a preset distance range to being able to receive a signal within the preset distance range. This indicates that the foil 30 has deviated toward the first detector 50. At this time, the first motor drives the first detector 50 to move away from the second detector 60 and monitors the deflection of the foil 30 in real time or emits a first detection signal at a certain frequency.

[0084] In a second alternative embodiment, see Figure 6 The driving assembly 90 includes a sub-driving member 96, a transmission belt 97, a driving wheel 981 and a driven wheel 982 fixed on both sides of the fixing frame 40.

[0085] The sub-driving member 96 is disposed on the fixing frame 40 and is coaxially connected to the driving wheel 981 .

[0086] Optionally, the sub-driving component 96 includes but is not limited to an electric motor, or a motor, etc.

[0087] The two ends of the transmission belt 97 are respectively attached to the outer surface of the driving wheel 981 and the outer surface of the driven wheel 982. The transmission belt 97 is sleeved on the outer sides of the driving wheel 981 and the driven wheel 982.

[0088] See also Figure 6 The transmission belt 97 includes a first transmission belt 971 and a second transmission belt 972 located on opposite sides of the driving pulley 981 and the driven pulley 982. The driving pulley 981 and the driven pulley 982 are arranged along the first direction X. The portion above the line connecting the centers of the driving pulley 981 and the driven pulley 982 is the first transmission belt 971, and the portion below the line connecting the centers of the driving pulley 981 and the driven pulley 982 is the second transmission belt 972.

[0089] The first detector 50 is connected to the first transmission belt 971. The second detector 60 is connected to the second transmission belt 972. The first detector 50 and the second detector 60 move synchronously in opposite directions under the action of the same transmission belt 97.

[0090] Generally, the foil 30 is located at the center of the base 10, that is, the central axis of the foil 30 is aligned with the center between the first detector 50 and the second detector 60. When the first detector 50 and the second detector 60 determine the edge of the foil 30 in the width direction, the first detector 50 and the second detector 60 move synchronously in opposite directions toward or away from each other.

[0091] In this embodiment, a transmission belt 97 is provided, and the upper and lower parts of an integral transmission belt 97 move synchronously in opposite directions. Therefore, the first detector 50 and the second detector 60 are respectively provided on the upper and lower parts of a transmission belt 97, so that the first detector 50 and the second detector 60 can be driven to move synchronously in opposite directions toward or away from each other through the same sub-drive component 96.

[0092] In this embodiment, the first detector 50 and the second detector 60 further slide along the fixing frame 40 , and the detection heights of the first detector 50 and the second detector 60 are consistent.

[0093] In a third alternative embodiment, see Figure 7 The driving assembly 90 includes a dual-axis motor 990, a first transmission member 92 and a second transmission member 94.

[0094] The dual-axis motor 990 is disposed on the fixing frame 40. For example, the dual-axis motor 990 is disposed on the middle leg of the fixing frame 40. The axial direction of the dual-axis motor 990 can be the second direction Y. Optionally, both axes of the dual-axis motor 990 are disposed on the same side.

[0095] The first transmission member 92 and the second transmission member 94 are sequentially arranged along the first direction X. The first transmission member 92 , the dual-axis motor 990 , and the second transmission member 94 are sequentially arranged along the first direction X.

[0096] One output shaft of the dual-axis motor 990 is connected to the first transmission member 92. The other output shaft of the dual-axis motor 990 is connected to the second transmission member 94. The first detector 50 is connected to the first transmission member 92. The second detector 60 is connected to the second transmission member 94. The first detector 50 and the second detector 60 move synchronously in opposite directions.

[0097] Optionally, the first transmission member 92 includes but is not limited to a conveyor belt, a screw rod, etc. The second transmission member 94 includes but is not limited to a conveyor belt, a screw rod, etc.

[0098] Optional, see Figure 7 The first transmission member 92 and the second transmission member 94 are both transmission belts, which are respectively denoted as the first transmission belt 971 and the second transmission belt 972. The driving assembly 90 further includes a first driving wheel 951, a second driving wheel 952, a first driven wheel 953 and a second driven wheel 954.

[0099] The first driven wheel 953, the first driving wheel 951, the second driving wheel 952, and the second driven wheel 954 are arranged in sequence. The first transmission member 92, namely the first conveyor belt, is sleeved on the outside of the first driving wheel 951 and the first driven wheel 953. The second transmission member 94, namely the second conveyor belt, is sleeved on the outside of the second driving wheel 952 and the second driven wheel 954. One output shaft of the dual-axis motor 990 is connected to the first driving wheel 951. The other output shaft of the dual-axis motor 990 is connected to the second driving wheel 952. The first detector 50 is connected to the first transmission belt 971. The second detector 60 is connected to the second transmission belt 972. The first detector 50 and the second detector 60 move synchronously in opposite directions (approaching or moving away).

[0100] Furthermore, the first detector 50 is connected to the upper half of the first transmission belt 971, and the second detector 60 is connected to the lower half of the second transmission belt 972. Alternatively, the first detector 50 is connected to the lower half of the first transmission belt 971, and the second detector 60 is connected to the upper half of the second transmission belt 972.

[0101] Generally, the foil 30 is located at the center of the base 10, that is, the central axis of the foil 30 is aligned with the center between the first detector 50 and the second detector 60. When the first detector 50 and the second detector 60 determine the edge of the foil 30 in the width direction, the first detector 50 and the second detector 60 move synchronously in opposite directions toward or away from each other.

[0102] In this embodiment, a dual-axis motor 990 is provided to drive the two transmission belts 97 to move synchronously. Therefore, the first detector 50 and the second detector 60 are designed to be arranged on the first transmission belt 971 and the second transmission belt 972 respectively, so that the first detector 50 and the second detector 60 can be driven by the same dual-axis motor 990 to move synchronously in the opposite directions toward or away from each other.

[0103] In a fourth alternative embodiment, see Figure 8 The driving assembly 90 includes a sub-driving member 96, a first gear 991, a second gear 992, a first transmission member 92 and a second transmission member 94.

[0104] The sub-driving member 96 is provided on the fixing frame 40. For example, the sub-driving member 96 is provided on the middle support leg of the fixing frame 40.

[0105] Optionally, the sub-driving component 96 includes but is not limited to an electric motor, or a motor, etc.

[0106] The first transmission member 92 and the second transmission member 94 are sequentially arranged along the first direction X. The first transmission member 92 , the sub-driving member 96 , and the second transmission member 94 are sequentially arranged along the first direction X.

[0107] The output shaft of the sub-driver 96 is connected to the first gear 991. The second gear 992 meshes with the first gear 991. The output shaft of the first gear 991 is connected to the first transmission member 92. The output shaft of the second gear 992 is connected to the second transmission member 94. The first transmission member 92 and the second transmission member 94 are arranged sequentially along the first direction X. The first detector 50 is connected to the first transmission member 92. The second detector 60 is connected to the second transmission member 94. The first detector 50 and the second detector 60 move synchronously in opposite directions.

[0108] Optionally, the first transmission member 92 includes but is not limited to a conveyor belt, a screw rod, etc. The second transmission member 94 includes but is not limited to a conveyor belt, a screw rod, etc.

[0109] Optionally, the first transmission member 92 and the second transmission member 94 are both conveyor belts. The driving assembly 90 further includes a first driving wheel 951 , a second driving wheel 952 , a first driven wheel 953 and a second driven wheel 954 .

[0110] The first driven wheel 953 , the first driving wheel 951 , the second driving wheel 952 , and the second driven wheel 954 are arranged in sequence. The first driving wheel 951 is coaxially connected to the first gear 991 , and the second driving wheel 952 is coaxially connected to the second gear 992 .

[0111] The first transmission member 92, i.e., the first conveyor belt, is mounted outside the first driving wheel 951 and the first driven wheel 953. The second transmission member 94, i.e., the second conveyor belt, is mounted outside the second driving wheel 952 and the second driven wheel 954. The output shaft of the sub-drive member 96 is connected to the first gear 991. The second gear 992 is meshed with the first gear 991. The first detector 50 is connected to the first transmission belt 971. The second detector 60 is connected to the second transmission belt 972. The first detector 50 and the second detector 60 move synchronously in opposite directions (approaching or moving away).

[0112] Furthermore, the first detector 50 is connected to the upper half of the first transmission belt 971, and the second detector 60 is connected to the upper half of the second transmission belt 972. Alternatively, the first detector 50 is connected to the lower half of the first transmission belt 971, and the second detector 60 is connected to the lower half of the second transmission belt 972.

[0113] Generally, the foil 30 is located at the center of the base 10, that is, the central axis of the foil 30 is aligned with the center between the first detector 50 and the second detector 60. When the first detector 50 and the second detector 60 determine the edge of the foil 30 in the width direction, the first detector 50 and the second detector 60 move synchronously in opposite directions toward or away from each other.

[0114] In this embodiment, a sub-drive member 96 is provided to drive the two transmission belts 97 to move synchronously in opposite directions. Therefore, the first detector 50 and the second detector 60 are designed to be respectively provided on the first transmission belt 971 and the second transmission belt 972, so that the first detector 50 and the second detector 60 can be driven by the same sub-drive member 96 to move synchronously in opposite directions toward or away from each other.

[0115] In general technology, the foil 30 is conveyed during coating, and is positioned using tension and a deviation corrector to prevent deviation during the process; however, deviation may also occur during conveying and the deviation cannot be detected during the process.

[0116] In this application, a mounting bracket 40, along with a first detector 50 and a second detector 60 (laser sensors), are installed above the current collector after the coating die 20 and coating roller of the coating apparatus 1000 to sense the edge position of the foil 30. The first and second detectors 50, 60 are electrically connected to a programmable logic controller 110. If the foil 30 deviates during the coating process, an early warning signal is issued. During this process, the programmable logic controller 110 can send a signal to the sensor in the deviation correction assembly 120 to initiate a corrective action.

[0117] The present application can be applied to the process of coating lithium-ion battery slurry, in which the foil 30 is carried out on a belt. The laser positioning and correction system 100 (i.e., the aforementioned positioning and correction system 100) is installed in the front position of the coating die head 20 to effectively monitor the deviation of the foil 30 during the coating process. When the foil 30 deviates during the belt conveying process, the first detector 50 and the second detector 60 can detect the deviation of the foil 30 and issue an early warning at the same time, which is conducive to the operator to make timely adjustments according to the laser positioning; at the same time, during this process, the first detector 50 and the second detector 60 can also feedback information to the programmable logic controller 110, and the programmable logic controller 110 performs synchronous correction by feeding back information to the correction component 120 to achieve consistency in the electrode size.

[0118] In the present application, a laser positioning and deviation correction system 100 is set in the coating equipment 1000. When coating, the laser positioning and deviation correction system 100 will be positioned according to the edge of the foil 30 during the coating process. If deviation occurs during the process, the controller 110 controls the warning indicator 130 to issue a warning signal and transmits a signal to the deviation correction component 120 for correction, so that an early warning of the deviation of the coated foil 30 can be issued in advance during the coating process. The coating size is controlled by detecting whether the foil 30 is offset during coating, and the size is adjusted in time to reduce the fluctuation of the coating size, improve the consistency of the electrode size, and reduce the dimensional defects caused by coating. The first detector 50 and the second detector 60 can be moved along the fixed frame 40 to meet the needs of multiple models and sizes of electrodes, which can save debugging time and improve production efficiency. In the present application, the laser positioning and deviation correction system 100 can be linked with the programmable logic controller 110 in the coating equipment 1000, and the deviation correction component 120 can be used to synchronously adjust the position of the foil 30 in real time to achieve deviation correction.

[0119] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A positioning and correction system, characterized in that: The positioning and correction system includes: base; A coating die head, the coating die head is disposed on the base, the coating die head is arranged along a first direction, and the surface of the coating die head is used to be adjacent to or in contact with the surface of the foil; A fixing frame, the fixing frame is mounted on the base, the fixing frame is arranged along the first direction, the fixing frame and the coating die head are spaced apart along a second direction, and the second direction is perpendicular to the first direction; a first detector, the first detector being disposed on the fixing frame, the first detector being configured to emit a first detection signal along or toward a first edge of the foil material in the second direction; and A second detector is provided on the fixing frame with an interval between the second detector and the first detector along the first direction. The second detector is used to transmit a second detection signal along the second direction along or toward the second edge of the foil. The second edge of the foil is arranged opposite to the first edge of the foil along the first direction.

2. The positioning and correction system according to claim 1, characterized in that: The positioning and correcting system also includes a controller and a correcting component, the correcting component is used to connect the foil, the first detector and the second detector are electrically connected to the controller, the first detector and / or the second detector are configured to detect the offset of the foil, and the controller is configured to control the correcting component to drive the foil to return to the original position when the first detector and the second detector detect that the foil is offset.

3. The positioning and correction system according to claim 1, characterized in that: The positioning and deviation correction system further includes a controller and a warning indicator. The warning indicator is electrically connected to the controller and is configured to issue a warning indication when the first detector and the second detector detect that the foil is deviated.

4. The positioning and correction system according to any one of claims 1 to 3, characterized in that: The positioning and correction system further includes a driving component, which is connected to the first detector and the second detector, and is used to drive at least one of the first detector and the second detector to move along the fixed frame.

5. The positioning and correction system according to claim 4, characterized in that: The driving assembly includes a first sub-driving member, a first transmission member, a second sub-driving member, and a second transmission member, wherein the first sub-driving member is disposed on the fixing frame, the first transmission member is disposed along the first direction, the first transmission member is connected to the first sub-driving member, and the first transmission member moves along the first direction under the action of the first sub-driving member, and the first detector is disposed on the first transmission member; The second sub-driving member is arranged on the fixed frame, the second transmission member is arranged along the first direction, the second transmission member is connected to the second sub-driving member, the second transmission member moves along the first direction under the action of the second sub-driving member, and the second detector is arranged on the second transmission member.

6. The positioning and correction system according to claim 4, characterized in that: The driving assembly includes a sub-driving member, a transmission belt, a driving wheel and a driven wheel fixed on both sides of the fixed frame, the sub-driving member is arranged on the fixed frame and is coaxially connected to the driving wheel, the two ends of the transmission belt are respectively attached to the outer surface of the driving wheel and the outer surface of the driven wheel, the transmission belt includes a first transmission belt and a second transmission belt located on opposite sides of the driving wheel and the driven wheel, the first detector is connected to the first transmission belt, the second detector is connected to the second transmission belt, and the first detector and the second detector move synchronously in opposite directions.

7. The positioning and correction system according to claim 4, characterized in that: The driving assembly includes a dual-axis motor, a first transmission member and a second transmission member. The dual-axis motor is arranged on the fixed frame. The first transmission member and the second transmission member are arranged in sequence along the first direction. One output shaft of the dual-axis motor is connected to the first transmission member, and the other output shaft of the dual-axis motor is connected to the second transmission member. The first detector is connected to the first transmission member, and the second detector is connected to the second transmission member. The first detector and the second detector move in opposite directions synchronously.

8. The positioning and correction system according to claim 4, characterized in that: The driving assembly includes a sub-driving member, a first gear, a second gear, a first transmission member and a second transmission member. The sub-driving member is arranged on the fixed frame. The output shaft of the sub-driving member is connected to the first gear, and the second gear is engaged with the first gear. The output shaft of the first gear is connected to the first transmission member, and the output shaft of the second gear is connected to the second transmission member. The first transmission member and the second transmission member are arranged in sequence along the first direction. The first detector is connected to the first transmission member, and the second detector is connected to the second transmission member. The first detector and the second detector move in opposite directions synchronously.

9. The positioning and correction system according to any one of claims 1 to 3, characterized in that: The first detector includes a one-dimensional laser sensor or a two-dimensional laser sensor, and the second detector includes a one-dimensional laser sensor or a two-dimensional laser sensor; and / or, The positioning and correction system also includes at least one third detector, which is arranged on at least one side of the coating die head along the first direction, and the third detector emits a third detection signal toward the edge of the foil along the first direction. The third detector is configured to detect the displacement of the foil along the first direction.

10. A coating device, characterized in that: It comprises the positioning and correction system as described in any one of claims 1 to 9.

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