A contact type vertical coating mechanism

Abstract

The utility model relates to battery pole piece production equipment technical field discloses a kind of contact type vertical coating mechanism, including rack and coating die, coating die is connected with rack by rotating assembly, and coating die includes upper die and lower die, the bottom of upper die and the bottom of lower die constitute the die lip with height difference;Die lip is used for coating to foil surface by discharging, and lower die bottom is in abutment with foil when coating, and coating die is rotated by rotating assembly, and the distance between upper die bottom and foil is adjusted.The die lip of the upper die bottom and the lower die bottom of the coating die in the scheme constitute the die lip with height difference, wherein lower die bottom is in contact with foil, and there is interval between upper die bottom and foil, and rotating assembly drives coating die to rotate to realize the adjustment of interval between upper die bottom and foil, to adjust GAP value, suitable for foil coating of different coating requirements.

Description

Technical Field

[0001] This utility model relates to the technical field of battery electrode production equipment, and in particular to a contact-type vertical coating mechanism. Background Technology

[0002] Electrodes are an important component of batteries, mainly manufactured through processes such as coating, rolling, and slitting. Coating of lithium battery electrode materials, such as non-contact coating, can only be performed with a back roller. In some cases, such as space constraints or when the other side is already coated with slurry and a back roller cannot be installed, non-contact coating is not possible.

[0003] The applicant's earlier Chinese patent application CN202323522571.5 discloses an extrusion coating head, including a first mold, a second mold, and a clamping piece sandwiched between the first and second molds to form a coating gap. The front end of the coating gap has a coating nozzle, which includes a bottom extension of the first mold and a bottom extension of the second mold. The outer surface of the bottom extension of the first mold is arc-shaped. The first end of the bottom extension of the first mold extends in the direction of travel of the substrate to form a horizontal portion parallel to the direction of travel of the substrate. The end of the bottom extension of the first mold extends upward to form a vertical portion connected to the lower surface of the first mold. This invention has the advantages of better anti-vibration effect, ability to limit the coating, and controllable coating thickness. This application is based on and further improves upon this design.

[0004] This invention overcomes the shortcomings of the prior art and provides a contact-type vertical coating mechanism that can adjust the gap between the die lip and the foil. Utility Model Content

[0005] The main purpose of this utility model is to provide a contact-type vertical coating mechanism, including a frame and a coating die head. The coating die head is connected to the frame through a rotating component. The coating die head includes an upper die and a lower die. The bottom of the upper die and the bottom of the lower die form a die head lip with a height difference.

[0006] The die lip is used to discharge material and coat it onto the foil surface. During coating, the bottom of the lower die abuts against the foil, and the rotating assembly drives the coating die to rotate, adjusting the distance between the bottom of the upper die and the foil.

[0007] Optionally, a shim is provided on the top of the upper mold, and the shim is provided to change the distance between the bottom of the upper mold and the foil.

[0008] Optionally, the rotating assembly includes a fixed plate, a rotating shaft, and a rotating motor. The rotating motor is mounted on the frame and is connected to the rotating shaft. The rotating shaft is connected to the fixed plate, and the fixed plate is fixedly connected to the lower mold of the coating die head.

[0009] Optionally, the frame is connected to the lifting guide rail via a movable plate, the movable plate is connected to the lifting drive component, and the lifting drive component drives the movable plate to move up and down along the lifting guide rail.

[0010] Optionally, there are two lifting guide rails, which are located on both sides of the frame, and the number of lifting drive components and moving plates corresponds to the number of lifting guide rails.

[0011] Optionally, the movable plate is provided with a transverse guide rail, the frame is matched and connected with the transverse guide rail, the frame is provided with a transverse drive motor, and the transverse drive motor drives the frame to move along the direction of the transverse guide rail.

[0012] Optionally, the movable plate is movably connected to the fine-tuning drive motor, the fine-tuning drive motor is driven to the fine-tuning screw, the fine-tuning screw is driven to the movable block, and the fine-tuning drive motor drives the fine-tuning screw to rotate, thereby causing the movable block to move along the axial direction of the fine-tuning screw.

[0013] The fine-tuning screw is equipped with a fine-tuning limit sensor, which is used to limit the range of movement of the moving block along the axial direction of the fine-tuning screw. The contact surface between the moving block and the adjusting block is an inclined surface, and the moving block and the adjusting block are in rolling contact. The adjusting block is connected to the moving plate.

[0014] Optionally, the rotating shaft is equipped with a position detector for detecting the rotation angle of the rotating shaft.

[0015] Optionally, a receiving tray and a tray lifting platform are provided below the coating die head. The receiving tray is located on the tray lifting platform, and the tray lifting platform is driven to move closer to or away from the coating die head by a lifting cylinder.

[0016] Optionally, a support roller is provided below the coating die head.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The contact vertical coating mechanism provided by this utility model has a height difference between the bottom of the upper mold and the bottom of the lower mold forming the mold lip. The bottom of the lower mold is in contact with the foil, and there is a gap between the bottom of the upper mold and the foil. The gap between the bottom of the upper mold and the foil is adjusted by rotating the coating mold through a rotating component, thereby adjusting the GAP value. It is suitable for coating foil with different coating requirements. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 This is a schematic diagram of an embodiment of the contact-type vertical coating mechanism of this utility model;

[0021] Figure 2 This is a front view of an embodiment of the contact-type vertical coating mechanism of this utility model;

[0022] Figure 3 This is a top view of an embodiment of the contact-type vertical coating mechanism of this utility model;

[0023] Figure 4 This is a cross-sectional view of an embodiment of the contact-type vertical coating mechanism of this utility model;

[0024] Figure 5 This is a partial enlarged view of an embodiment of the contact-type vertical coating mechanism of this utility model.

[0025] Figure label:

[0026] 10-Frame; 11-Moving plate; 12-Transverse guide rail; 13-Transverse drive motor; 14-Fine-tuning drive motor; 15-Fine-tuning screw; 16-Fine-tuning limit sensor; 17-Moving block; 18-Adjusting block; 20-Coating die head; 21-Upper die; 22-Lower die; 23-Die head lip; 24-Support roller; 30-Rotating assembly; 31-Fixed plate; 32-Rotating shaft; 33-Rotating motor; 34-Position detector; 40-Lifting guide rail; 41-Lifting drive component; 50-Receiving tray; 51-Pattern lifting platform; 52-Lifting cylinder; 60-Foil material. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0028] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium, or as a connection within two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0029] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] like Figure 1-5 The diagram shown is a schematic representation of an embodiment of the contact-type vertical coating mechanism provided by this utility model.

[0031] Please refer to Figure 1-5This embodiment is used for coating foil to obtain electrode sheets, including a frame 10 and a coating die 20. The coating die 20 is connected to the frame 10 via a rotating assembly 30. The coating die 20 includes an upper die 21 and a lower die 22. The bottom of the upper die 21 and the bottom of the lower die 22 form a die lip 23 with a height difference. The die lip 23 is used to discharge material for coating onto the foil surface. During coating, the bottom of the lower die 22 abuts against the foil. The rotating assembly 30 drives the coating die 20 to rotate, adjusting the distance between the bottom of the upper die 21 and the foil.

[0032] In this embodiment, the contact-type vertical coating mechanism is set perpendicular to the horizontal ground, such as... Figure 4 As shown, the foil 60 passes through the contact-type vertical coating mechanism and is located below the coating die 20, making vertical contact with the die lip 23 of the coating die 20. Taking the angle between the coating die 20 and the ground as the reference plane, the rotating assembly 30 drives the coating die 20 to rotate counterclockwise or clockwise, with the rotation range being ±45° between the coating die 20 and the reference plane.

[0033] Specifically, the rotating assembly 30 includes a fixed plate 31, a rotating shaft 32, and a rotating motor 33. The rotating motor 33 is mounted on the frame 10 and is connected to the rotating shaft 32. The rotating shaft 32 is connected to the fixed plate 31, and the fixed plate 31 is fixedly connected to the lower mold 22 of the coating die head 20. The rotating motor 33 may be a rotary cutter drive motor.

[0034] Furthermore, the rotating shaft 32 is equipped with a position detector 34 for detecting the rotation angle of the rotating shaft. Specifically, the position detector 34 is a rotary tool position sensor.

[0035] For different foil materials, the required areal density varies, necessitating adjustment of the GAP value of the coating mechanism. In this embodiment, the coating die 20 is slightly rotated around the rotation axis 32 by the rotating motor 33 in the rotating assembly 30, increasing or decreasing the relative distance between the die lip 23 and the foil 60, thereby adjusting the GAP value. During coating, the angle between the coating die 20 and the ground is adjustable within ±45°, and the rotation angle forms a closed loop with the rotary blade position sensor to ensure stable GAP value.

[0036] The GAP value of coating is the gap distance between the coating die 20 and the foil 60, which directly affects the thickness and uniformity of the coating. A suitable GAP value can ensure that the coating thickness meets the requirements, while avoiding coatings that are too thick or too thin, thereby improving material utilization and product quality.

[0037] In one embodiment, a shim (not shown) is provided on the top of the upper mold 21. The shim is used to change the distance between the bottom of the upper mold 21 and the foil. Specifically, the shim is a standard misaligned lip shim. By adding a standard misaligned lip shim at the back plate position of the upper mold 21 of the coating die head 20, the die head lips 23 between the upper mold 21 and the lower mold 22 are misaligned, thereby adjusting the distance between the bottom of the upper mold 21 and the foil, and thus adjusting the GAP value.

[0038] In one embodiment, the frame 10 is connected to the lifting guide rail 40 via a movable plate 11. The movable plate 11 is connected to a lifting drive component 41, which drives the movable plate 11 to move up and down along the lifting guide rail 40. Specifically, the lifting drive component 41 can be driven by an electric cylinder. By driving the coating die 20 to move vertically along the lifting guide rail 40 via the lifting drive component 41, the vertical position adjustment of the coating die 20 is achieved.

[0039] Furthermore, there are two lifting guide rails 40, located on both sides of the frame 10, and the number of lifting drive components 41 and moving plates 11 corresponds to the number of lifting guide rails 40. The symmetrical lifting design ensures the stability of the lifting movement of the coating die head 20.

[0040] In one embodiment, a receiving tray 50 and a tray lifting platform 51 are provided below the coating die head 20. The receiving tray 50 is located on the tray lifting platform 51, which is driven by a lifting cylinder 52 to move closer to or further away from the coating die head 20. In the stopped state, the lifting drive component 41 drives the coating die head 20 to rise to the stopped position. After the tray lifting platform 51 rises, the receiving tray 50 is placed on it, which allows for cleaning of the die head lip 23 to ensure the quality of subsequent coating.

[0041] In one embodiment, a support roller 24 is provided below the coating die 20. For example... Figure 4 As shown, the support roller 24 contacts the upper surface of the foil, thereby achieving support.

[0042] In one embodiment, the moving plate 11 is provided with a transverse guide rail 12, and the frame 10 is matched and connected to the transverse guide rail 12. The frame 10 is provided with a transverse drive motor 13, which drives the frame 10 to move along the transverse guide rail 12. The transmission between the transverse drive motor 13 and the frame 10 can specifically adopt a lead screw drive, which is a conventional transmission method and will not be described in detail here. For different coating processes, in order to meet the requirements of the alignment of the front and back edges of the coated foil, the position can be adjusted by controlling the transverse drive motor 13 to control the transverse movement of the coating die head 20. Furthermore, the magnitude of the transverse movement is closed-loop with the transverse position sensor (not shown) to ensure the alignment requirements of the coating edges of the front and back of the foil.

[0043] In one embodiment, the movable plate 11 is movably connected to the fine-tuning drive motor 14, the fine-tuning drive motor 14 is drivenly connected to the fine-tuning lead screw 15, and the fine-tuning lead screw 15 is drivenly connected to the movable block 17. The fine-tuning drive motor 14 drives the fine-tuning lead screw 15 to rotate, thereby causing the movable block 17 to move along the axial direction of the fine-tuning lead screw 15. The fine-tuning lead screw 15 is equipped with a fine-tuning limit sensor 16, which is used to limit the range of movement of the movable block along the axial direction of the fine-tuning lead screw and to detect the movement distance of the movable block 17. The contact surface between the movable block 17 and the adjusting block 18 is an inclined surface, and the movable block 17 and the adjusting block 18 are in rolling contact through rollers. The adjusting block 18 is connected to the movable plate 11.

[0044] The fine-tuning drive motor 14 drives the fine-tuning screw 15 to rotate, which in turn drives the moving block 17 to move horizontally in a straight line. Since the contact surface between the moving block 17 and the adjusting block 18 is an inclined plane, the horizontal linear movement of the moving block 17 can be converted into the vertical linear movement of the adjusting block 18, thereby realizing the fine-tuning of the coating die head 20 in the vertical direction. The rolling contact between the moving block 17 and the adjusting block 18 can reduce the frictional force when they move relative to each other. The fine-tuning limit sensor 16 detects the moving distance of the moving block 17, realizing closed-loop control of the coating die head 20 during vertical fine-tuning movement.

[0045] In the coating state, the lifting drive 41, in conjunction with the above-mentioned fine-tuning process, first drives the coating die head 20 to descend to the coating position for coating, thereby achieving coarse adjustment of vertical movement; then the fine-tuning drive motor 14 and the fine-tuning limit sensor 16 perform closed-loop control to ensure fine adjustment of the coating die head 20 in the vertical direction.

[0046] In this embodiment, the coating die head 20 is used to achieve material coating of the foil. Its specific structure can be referred to the applicant's prior patent application 202323522571.5, and the relevant description will not be repeated.

[0047] In summary, in this embodiment, the die lip formed by the bottom of the upper die and the bottom of the lower die of the coating die has a height difference. The bottom of the lower die is in contact with the foil, and there is a gap between the bottom of the upper die and the foil. The gap between the bottom of the upper die and the foil can be adjusted by rotating the coating die through the rotating component, thereby adjusting the GAP value.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A contact-type vertical coating mechanism, characterized in that, It includes a frame and a coating die head, the coating die head being connected to the frame via a rotating assembly, the coating die head including an upper die and a lower die, the bottom of the upper die and the bottom of the lower die forming a die lip with a height difference; The die lip is used to discharge material and coat it onto the foil surface. During coating, the bottom of the lower die abuts against the foil, and the rotating assembly drives the coating die to rotate, adjusting the distance between the bottom of the upper die and the foil.

2. The contact-type vertical coating mechanism according to claim 1, characterized in that, The upper mold is provided with a shim at the top, and the shim is used to change the distance between the bottom of the upper mold and the foil.

3. The contact-type vertical coating mechanism according to claim 1, characterized in that, The rotating assembly includes a fixed plate, a rotating shaft, and a rotating motor. The rotating motor is mounted on the frame and is connected to the rotating shaft. The rotating shaft is connected to the fixed plate, and the fixed plate is fixedly connected to the lower mold of the coating die head.

4. The contact-type vertical coating mechanism according to claim 3, characterized in that, The frame is connected to the lifting guide rail via a movable plate, and the movable plate is connected to the lifting drive component, which drives the movable plate to move up and down along the lifting guide rail.

5. The contact-type vertical coating mechanism according to claim 4, characterized in that, The number of lifting guide rails is two, and the two lifting guide rails are located on both sides of the frame respectively. The number of lifting drive components and moving plates corresponds to the number of lifting guide rails.

6. The contact-type vertical coating mechanism according to claim 4, characterized in that, The movable plate is provided with a transverse guide rail, the frame is matched and connected to the transverse guide rail, the frame is provided with a transverse drive motor, and the transverse drive motor drives the frame to move along the transverse guide rail.

7. The contact-type vertical coating mechanism according to claim 4, characterized in that, The movable plate is movably connected to the fine-tuning drive motor, the fine-tuning drive motor is driven to the fine-tuning screw, the fine-tuning screw is driven to the movable block, and the fine-tuning drive motor drives the fine-tuning screw to rotate, thereby causing the movable block to move along the axis of the fine-tuning screw. The fine-tuning screw is equipped with a fine-tuning limit sensor, which is used to limit the range of movement of the moving block along the axial direction of the fine-tuning screw and to detect the moving distance of the moving block. The contact surface between the moving block and the adjusting block is an inclined surface, and the moving block and the adjusting block are in rolling contact. The adjusting block is connected to the moving plate.

8. The contact-type vertical coating mechanism according to claim 3, characterized in that, The rotating shaft is equipped with a position detector for detecting the rotation angle of the rotating shaft.

9. The contact-type vertical coating mechanism according to claim 1, characterized in that, Below the coating die head is a receiving tray and a tray lifting platform. The receiving tray is located on the tray lifting platform, which is driven by a lifting cylinder to move closer to or away from the coating die head.

10. The contact-type vertical coating mechanism according to claim 1, characterized in that, A support roller is provided below the coating die head.

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