Coating deviation correcting device and coating machine

Abstract

The utility model discloses a coating deviation rectifying device and a coating machine, the coating deviation rectifying device comprises a coating assembly, two identification assemblies and a driving assembly, the coating assembly comprises a die head base and a coating die head, and the coating die head coats a first coating on the surface of a foil; the two recognition assemblies each comprise a first recognizer and a second recognizer, the surface of the other side of the foil is provided with a second coating, and the first recognizers and the second recognizers are used for obtaining the relative positions of the first coating and the second coating correspondingly; the driving assembly is fixed to the die head base and drives the coating die head to move in the width direction of the foil according to the relative position of the first coating and the second coating so as to adjust the coating position of the first coating. According to the coating deviation correcting device, the coating die head is driven by the driving assembly to move in the width direction of the foil so as to adjust the coating position of the first coating, so that the relative position of the first coating and the second coating is controlled within the deviation range, the response is fast, and the deviation correcting precision can be improved.

Description

Technical Field

[0001] This utility model relates to the field of battery processing and manufacturing technology, and in particular to a coating correction device and a coating machine. Background Technology

[0002] In related technologies, the coating process is a crucial step in the manufacturing of lithium batteries, as the quality of the coated product directly determines the quality of the battery cell. The coating process involves coating one side first, then the other. When coating one side and then the other, the alignment of the two sides must be controlled within a specified range. The position of the electrode is adjusted using alignment rollers. These rollers are tilted at a certain angle to deflect the electrode. However, because the alignment rollers are relatively far from the die head, frequent adjustments cause changes in the tension on both sides of the electrode. Uneven tension can easily lead to wrinkles and uneven coating. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of this invention is to provide a coating correction device that drives a coating die head to move along the width direction of the foil material via a driving component, thereby adjusting the coating position of the first coating layer. This ensures that the relative positions of the first and second coating layers are controlled within the deviation range, resulting in a faster response and improved correction accuracy.

[0004] This utility model also proposes a coating machine having the above-mentioned coating correction device.

[0005] A coating correction device according to a first aspect of the present invention includes: a coating assembly, the coating assembly including a die head base and a coating die head, the coating die head being movably mounted on the die head base and adapted to coat a first coating layer onto the surface of a foil; two identification components, the two identification components being located on opposite sides of the foil in the width direction, each of the two identification components including a first identifier and a second identifier, the first identifier and the second identifier being located on opposite sides of the foil in the thickness direction, the other side surface of the foil having a second coating layer, the first identifier and the second identifier being used to obtain the relative positions of the first coating layer and the second coating layer; and a driving assembly, the driving assembly being fixed to the die head base and connected to the coating die head, used to drive the coating die head to move along the width direction of the foil according to the relative positions of the first coating layer and the second coating layer, so as to adjust the coating position of the first coating layer.

[0006] According to the coating correction device of this utility model embodiment, based on the relative positions of the first coating and the second coating identified by the identification component, the driving component drives the coating die head to move along the width direction of the foil to adjust the coating position of the first coating, so that the relative positions of the first coating and the second coating are controlled within the deviation range, and the entire process of correcting the alignment of the first coating and the second coating is shortened to within 1m, with a faster response and improved correction accuracy.

[0007] According to some embodiments of the present invention, the first identifier has a first reference line, the second identifier has a second reference line, the first reference line and the second reference line are coplanar, the first identifier is used to obtain the relative position of the first coating according to the first reference line, and the second identifier is used to obtain the relative position of the second coating according to the second reference line.

[0008] According to some embodiments of the present invention, the drive assembly includes a drive motor, a lead screw, and a lead screw nut. The drive motor is connected to the lead screw for transmission, the lead screw nut is sleeved on the outer periphery of the lead screw, and the lead screw nut is connected to the coating die head.

[0009] According to some embodiments of the present invention, the lead screw has an external thread, and the distance between two adjacent external threads in the length direction of the lead screw is D, which satisfies: 0.4mm≤D≤0.6mm.

[0010] According to some embodiments of the present invention, there are multiple lead screw nuts, and the multiple lead screw nuts are evenly spaced along the length direction of the lead screw.

[0011] According to some embodiments of the present invention, both the first identifier and the second identifier include a camera and a plurality of fill lights, the plurality of fill lights surrounding the outer periphery of the camera, and the camera being positioned facing the foil.

[0012] According to some embodiments of the present invention, the first identifier has a first reference line, the second identifier has a second reference line, the first reference line and the second reference line are coplanar, the first identifier has a first display screen on the side away from the second identifier, and the information collected by the camera and the first reference line are both displayed on the first display screen; and / or, the second identifier has a second display screen on the side away from the first identifier, and the information collected by the camera and the second reference line are both displayed on the second display screen.

[0013] According to some embodiments of the present invention, both the first identifier and the second identifier include a first region and a second region connected together. The first region of the first identifier is disposed opposite to the first coating, and the first region of the second identifier is disposed opposite to the second coating. The camera is located in the first region.

[0014] According to some embodiments of the present invention, the coating die head is provided with a guide slide rail, the guide slide rail extends along the width direction of the foil, and the die head base is provided with a guide slider, the guide slide rail and the guide slider slidingly engaging.

[0015] The coating machine according to a second aspect of the present invention includes: the coating correction device of the first aspect of the present invention described above.

[0016] According to the present invention, the coating machine, by setting the above-mentioned coating correction device, drives the coating die head to move along the width direction of the foil material through the driving component to adjust the coating position of the first coating layer, so that the entire process of correcting the alignment of the first coating layer and the second coating layer is shortened to within 1m, the response is faster, and the correction accuracy can also be improved.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of a coating machine according to some embodiments of the present invention;

[0020] Figure 2 This is a schematic diagram of a coating correction device according to some embodiments of the present invention;

[0021] Figure 3 yes Figure 2 A cross-sectional view of the identification component identifying the first and second coatings;

[0022] Figure 4 yes Figure 2 A schematic diagram of the first identifier in the middle;

[0023] Figure 5 yes Figure 2 A schematic diagram of the first and second display screens;

[0024] Figure 6 yes Figure 2A schematic diagram showing the interaction between the drive assembly and the coating die head;

[0025] Figure 7 yes Figure 6 Enlarged view of point A in the middle.

[0026] Figure label:

[0027] 100. Coating correction device;

[0028] 10. Coating assembly; 11. Die head base; 111. Guide slider; 12. Coating die head; 121. Guide slide rail;

[0029] 20. Foil material; 21. First coating; 211. First identification line; 22. Second coating; 221. Second identification line;

[0030] 30. Recognition component; 31. First recognizer; 311. First baseline; 312. First display screen; 32. Second recognizer; 321. Second baseline; 322. Second display screen; 33. Camera; 34. Fill light;

[0031] 40. Drive assembly; 41. Drive motor; 42. Lead screw; 421. External thread; 43. Lead screw nut. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The following is for reference. Figures 1-7 Describes a coating correction device 100 according to an embodiment of the present invention.

[0036] According to the first aspect of the present invention, the coating correction device 100 includes a coating component 10, an identification component 30 and a driving component 40. The coating component 10 includes a die base 11 and a coating die 12. The coating die 12 is movably mounted on the die base 11. The coating die 12 can be mounted on the die base 11 and is adapted to move relative to the die base 11. The coating die 12 is adapted to coat the surface of the foil 20 with a first coating layer 21.

[0037] The two identification components 30 are located in the width direction of the foil 20 (e.g., refer to the attached diagram). Figure 2 On opposite sides of the foil 20 in the X direction, one identification component 30 is located on one side of the foil 20 in the width direction, and the other identification component 30 is located on the other side of the foil 20 in the width direction. Both identification components 30 include a first identifier 31 and a second identifier 32, which are respectively located in the foil 20 in the thickness direction (e.g., refer to the attached diagram). Figure 2 The foil 20 is located on opposite sides in the Z direction, wherein the thickness direction of the foil 20 can be vertical. The first identifier 31 and the second identifier 32 are located on opposite sides in the vertical direction of the foil 20, with the first identifier 31 located above the second identifier 32. The first identifier 31 and the second identifier 32 are fixedly connected by a connecting plate.

[0038] The coating die 12 is adapted to coat the surface of the foil 20 with a first coating layer 21, that is, the coating die 12 is adapted to coat the upper surface of the foil 20 with the first coating layer 21, the other side surface of the foil 20 has a second coating layer 22, and the lower surface of the foil 20 has the second coating layer 22 that has already been coated. After the second coating layer 22 is coated on one side of the foil 20 using the coating die 12, it is necessary to coat the other side of the foil 20 with the first coating layer 21 again. At this time, the alignment between the first coating layer 21 and the second coating layer 22 needs to be controlled between 0.2 mm and 0.5 mm.

[0039] The first identifier 31 and the second identifier 32 are used to obtain the relative positions of the first coating 21 and the second coating 22, respectively. The driving assembly 40 is fixed to the die head base 11 and connected to the coating die head 12. The driving assembly 40 is used to drive the coating die head 12 to move along the width direction of the foil 20 according to the relative positions of the first coating 21 and the second coating 22 obtained by the first identifier 31 and the second identifier 32, so as to adjust the coating position of the first coating 21 and so that the alignment of the first coating 21 and the second coating 22 is controlled within the deviation range.

[0040] Specifically, a first identifier 31 of one identification component 30 acquires the position of the first coating 21 on one side of the foil 20 in the width direction, and a first identifier 31 of another identification component 30 acquires the position of the first coating 21 on the other side of the foil 20 in the width direction; a second identifier 32 of one identification component 30 acquires the position of the second coating 22 on one side of the foil 20 in the width direction, and a second identifier 32 of another identification component 30 acquires the position of the second coating 22 on the other side of the foil 20 in the width direction; and transmits the position information of the first coating 21 and the second coating 22 to the computer processing system. The processing system is used to process the position of the first coating 21 and the position of the second coating 22, and calculate whether the relative position of the first coating 21 and the second coating 22 is within the deviation range. If so, the drive component 40 remains stationary, and the coating die 12 continues to coat the foil 20 along the existing route. If not, the computer processing system converts the deviation value of the relative position of the first coating 21 and the second coating 22 into an electrical signal, which is transmitted to the receiver of the drive component 40. The receiver converts the signal into a distance, so that the drive component 40 drives the coating die 12 to move a corresponding distance to adjust the position of the coating die 12 for continued coating.

[0041] By adjusting the movement of the coating die 12 to adjust the coating position of the first coating 21, the position of the foil 20 does not need to be adjusted. The coating die 12 has high consistency in coating the foil 20 with the second coating 22. The entire process of correcting the alignment of the first coating 21 and the second coating 22 will be shortened to within 1m, which can provide a rapid response.

[0042] According to the coating correction device 100 of this utility model embodiment, based on the relative positions of the first coating 21 and the second coating 22 identified by the identification component 30, the driving component 40 drives the coating die head 12 to move along the width direction of the foil 20 to adjust the coating position of the first coating 21, so that the relative positions of the first coating 21 and the second coating 22 are controlled within the deviation range, and the entire process of correcting the alignment of the first coating 21 and the second coating 22 is shortened to within 1m, with a faster response and improved correction accuracy.

[0043] According to some embodiments of this utility model, refer to Figures 1-3 , Figure 5 The first identifier 31 has a first reference line 311, and the second identifier 32 has a second reference line 321. The first reference line 311 and the second reference line 321 are coplanar. The second identifier 32 is used to obtain the relative position of the second coating 22 according to the second reference line 321. The second coating 22 has a second edge surface on both sides of the width of the foil 20. The second identifier 32 obtains the position of the second edge surface. The position of the second edge surface is displayed on the second identifier 32 as the second identification line 221. By adjusting the position of the identification component 30, the second reference line 321 coincides with the second identification line 221. At this time, the identification component 30 is fixed.

[0044] The first identifier 31 is used to obtain the position of the first coating 21. The first coating 21 has a first edge surface on both sides of the width of the foil 20. The position of the first edge surface is displayed as a first identification line 211 on the first identifier 31. Since the first reference line 311 and the second reference line 321 are coplanar, the activity of the coating die head 12 will be driven by the driving component 40, so that the first identification line 211 is collinear with the first reference line 311, or the relative position of the first identification line 211 and the first reference line 311 is controlled within an acceptable deviation range, so that the first identification line 211 is collinear with the second identification line 221 or the relative position is controlled within an acceptable deviation range, that is, the relative position of the first coating 21 and the second coating 22 is controlled within an acceptable deviation range.

[0045] Using the first reference line 311 and the second reference line 321 to adjust the relative position of the first coating 21 and the second coating 22 makes it easier to adjust the position of the first coating 21.

[0046] According to some embodiments of this utility model, refer to Figure 2 , Figure 6 The drive assembly 40 includes a drive motor 41, a lead screw 42, and a lead screw nut 43. The drive motor 41 is connected to the lead screw 42 for transmission. The lead screw nut 43 is sleeved on the outer periphery of the lead screw 42 and is connected to the coating die head 12. By driving the lead screw 42 to rotate through the drive motor 41, the lead screw nut 43 is moved along the length direction of the lead screw 42, which in turn moves the coating die head 12 along the length direction of the lead screw 42, that is, along the width direction of the foil 20, ultimately achieving the purpose of adjusting the coating position of the first coating layer 21.

[0047] The drive motor 41 can be a servo motor, which can rotate forward and reverse to adjust the position of the first coating 21 along both sides of the width direction of the foil 20; and the servo motor has high precision when rotating forward and reverse, with an adjustment precision of 0.05mm.

[0048] According to some embodiments of this utility model, refer to Figure 2 , Figures 6-7 The lead screw 42 has an external thread 421. Along the length of the lead screw 42, the distance between two adjacent external threads 421 is D, satisfying: 0.4mm ≤ D ≤ 0.6mm. That is, the distance the coating die 12 moves is D for every one revolution of the lead screw. A smaller distance between adjacent external threads 421 results in higher accuracy during the rotation of the lead screw 42. For example, the distance between two adjacent external threads 421 can be 0.4mm, 0.5mm, or 0.6mm, etc. Preferably, the distance between two adjacent external threads 421 is 0.5mm.

[0049] According to some embodiments of this utility model, refer to Figure 2 , Figure 6 There are multiple lead screw nuts 43, which are evenly spaced along the length of the lead screw 42. All the lead screw nuts 43 are connected to the coating die head 12. The multiple lead screw nuts 43 better support the coating die head 12, which can make the force on the coating die head 12 more even and prevent the coating die head 12 from shifting its position. In addition, it can also increase the connection strength between the coating die head 12 and the drive assembly 40.

[0050] According to some embodiments of this utility model, refer to Figures 1-4 The first identifier 31 and the second identifier 32 both include a camera 33 and multiple fill lights 34. The multiple fill lights 34 surround the outer periphery of the camera 33. The camera 33 is positioned facing the foil 20. The camera 33 is used to capture images of the first coating 21 and the second coating 22 of the foil 20. The multiple fill lights 34 are used to adjust the brightness of the light source, which helps the camera 33 capture images better.

[0051] According to some embodiments of this utility model, refer to Figures 1-5 The first identifier 31 has a first reference line 311, and the second identifier 32 has a second reference line 321. The first reference line 311 and the second reference line 321 are coplanar. The first identifier 31 has a first display screen 312 on the side away from the second identifier 32. The information collected by the camera 33 and the first reference line 311 are both displayed on the first display screen 312. The first coating 21 has a first edge surface on both sides of the width of the foil 20. The camera 33 collects the first edge surface and displays it on the first display screen 312. The first edge surface displayed on the first display screen 312 is the first identification line 211. By observing the positional relationship between the first identification line 211 and the first reference line 311 on the first display screen 312, the positional relationship between the first coating 21 and the first reference line 311 can be observed.

[0052] The second identifier 32 has a second display screen 322 on the side opposite to the first identifier 31. The second coating 22 has second edge surfaces on both sides of the width of the foil 20. The camera 33 captures the second edge surfaces and displays them on the second display screen 322. The second edge surfaces displayed on the second display screen 322 are the second identification lines 221. Based on the observed positional relationship between the second identification lines 221 and the second reference line 321 on the second display screen 322, when the second identification lines 221 and the second reference line 321 are collinear, or when the second identification lines 221 and the second reference line 321 are within the deviation range, it is not necessary to adjust the position of the identification component 30. When the second identification lines 221 and the second reference line 321 are outside the deviation range, the position of the identification component 30 can be adjusted so that the second identification lines 221 and the second reference line 321 are collinear, or when the second identification lines 221 and the second reference line 321 are within the deviation range.

[0053] According to some embodiments of this utility model, refer to Figures 1-3 The first identifier 31 and the second identifier 32 both include a first region and a second region connected to each other. The first region of the first identifier 31 is set opposite to the first coating 21, and the first region of the second identifier 32 is set opposite to the second coating 22. The camera 33 is located in the first region, which can ensure that the camera 33 can collect the position information of the first coating 21 and the second coating 22.

[0054] According to some embodiments of this utility model, refer to Figure 1 , Figure 6 The coating die head 12 is provided with a guide slide rail 121, which extends along the width direction of the foil 20. The die head base 11 is provided with a guide slider 111, and the guide slide rail 121 and the guide slider 111 are slidably engaged. There are two guide slide rails 121 and two guide sliders 111. Through the sliding engagement of the guide slide rail 121 and the guide slider 111, the sliding of the coating die head 12 is guided and limited.

[0055] The coating machine according to the second aspect of the present invention includes: the coating correction device 100 of the first aspect of the present invention.

[0056] According to the coating machine of this utility model embodiment, by setting the above-mentioned coating correction device 100, the coating die head 12 is driven to move along the width direction of the foil 20 by the driving component 40 to adjust the coating position of the first coating 21, so that the entire process of correcting the alignment of the first coating 21 and the second coating 22 is shortened to within 1m, the response is faster, and the correction accuracy can also be improved.

[0057] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A coating correction device, characterized in that, include: A coating assembly, comprising a die base and a coating die, the coating die being movably mounted on the die base and adapted to coat a first coating onto the surface of a foil. Two identification components are located on opposite sides of the foil in the width direction. Each identification component includes a first identifier and a second identifier. The first identifier and the second identifier are located on opposite sides of the foil in the thickness direction. The other side surface of the foil has a second coating. The first identifier and the second identifier are used to obtain the relative positions of the first coating and the second coating, respectively. A driving assembly is fixed to the die head base and connected to the coating die head. The driving assembly is used to drive the coating die head to move along the width direction of the foil according to the relative positions of the first coating and the second coating, so as to adjust the coating position of the first coating.

2. The coating correction device according to claim 1, characterized in that, The first identifier has a first reference line, and the second identifier has a second reference line. The first reference line and the second reference line are coplanar. The first identifier is used to obtain the relative position of the first coating according to the first reference line, and the second identifier is used to obtain the relative position of the second coating according to the second reference line.

3. The coating correction device according to claim 1, characterized in that, The drive assembly includes a drive motor, a lead screw, and a lead screw nut. The drive motor is connected to the lead screw via a transmission. The lead screw nut is sleeved on the outer periphery of the lead screw and is connected to the coating die head.

4. The coating correction device according to claim 3, characterized in that, The lead screw has an external thread, and the distance between two adjacent external threads along the length of the lead screw is D, which satisfies: 0.4mm≤D≤0.6mm.

5. The coating correction device according to claim 3, characterized in that, The lead screw nut is a plurality of such nuts, which are evenly spaced along the length of the lead screw.

6. The coating correction device according to claim 1, characterized in that, Both the first and second identifiers include a camera and a plurality of fill lights, the plurality of fill lights surrounding the outer periphery of the camera, the camera being positioned facing the foil.

7. The coating correction device according to claim 6, characterized in that, The first identifier has a first reference line, and the second identifier has a second reference line. The first reference line and the second reference line are coplanar. The first identifier has a first display screen on the side opposite to the second identifier, and the information collected by the camera and the first reference line are both displayed on the first display screen; and / or, the second identifier has a second display screen on the side opposite to the first identifier, and the information collected by the camera and the second reference line are both displayed on the second display screen.

8. The coating correction device according to claim 6, characterized in that, Both the first and second identifiers include a first region and a second region connected together. The first region of the first identifier is disposed opposite to the first coating, and the first region of the second identifier is disposed opposite to the second coating. The camera is located in the first region.

9. The coating correction device according to claim 1, characterized in that, The coating die head is provided with a guide slide rail, which extends along the width direction of the foil. The die head base is provided with a guide slider, and the guide slide rail and the guide slider slide in a sliding engagement.

10. A coating machine, characterized in that, include: The coating correction device according to any one of claims 1-9.

Images