A multi-layer die coating mechanism

Abstract

The utility model relates to battery pole piece coating technical field discloses a kind of multilayer die coating mechanism, including die assembly and main roller assembly, the gap width between main roller assembly and die assembly is adjusted by first moving assembly, and main roller assembly and die assembly are adjusted alignment by second moving assembly, die assembly includes multiple die units of stacked settings, slit is formed between adjacent die unit, and the outlet of slit converges in same die lip, the die unit in top is first die unit, the die unit below first die unit is second die unit, and first die unit is suspended and set above second die unit.This scheme is in the first die unit of uppermost side, and it is suspended and set in the mode above second die unit, and this setting structure can be adjusted after the position of first die unit, when to second die unit, the position of first die unit that has been adjusted will not be affected, and then coating density will not be affected.

Description

Technical Field

[0001] This utility model relates to the field of battery electrode coating technology, and in particular to a multi-layer die coating mechanism. Background Technology

[0002] In lithium battery manufacturing, electrode coating is one of the most critical processes determining battery energy density, cycle life, and safety. With industry development, multi-layer coating offers significant advantages in product performance, production efficiency, and cost control. In top-down coating, due to the adjustment sequence, the gaps between the upper and middle dies and the main roller are adjusted first to optimize the bottom layer GAP value. Then, the distance between the lower die and the main roller is adjusted to optimize the overall coating GAP value. However, the conventional fixing method involves the lower die fixed to the cutter holder, and the upper and middle dies fixed to the lower die. When the lower die moves to adjust the gap value, it also affects the gap between the upper die and the main roller, thus affecting the coating area density. Therefore, a coating mechanism is needed that allows adjustment of the lower die without affecting the upper die.

[0003] Chinese patent CN202411549013.4 discloses a slit-type coating die head with multiple coating heads, including multiple coating heads, multiple shaping plates connected between the coating heads, a feed pipe connected to one side of the coating heads, and a material leveling groove disposed on the surface of the coating heads. Each material leveling groove contains a fixedly connected airbag, which is fixedly connected to the bottom surface of the material leveling groove away from the feed pipe. One end of the airbag is fixedly connected to an air inlet pipe. A connection hole is opened on one side of the coating head, and one end of the air inlet pipe passes through the connection hole and is fixedly connected to an air guide pipe. A fixing block is fixedly connected to one side of the coating head. Multiple valves are connected to each other through a connecting pipe, one end of which is fixedly connected to a fan. In this design, the lower die supports the upper die; adjusting the lower die will affect the already adjusted position of the upper die.

[0004] This invention overcomes the shortcomings of the prior art and provides a multi-layer die head coating mechanism. By fixing the upper die, when the gap between the lower die and the main roller is adjusted and moved after the upper die is fixed, the gap between the upper die and the main roller will not change, thereby ensuring the surface density. Utility Model Content

[0005] The main objective of this invention is to provide a multi-layer die coating mechanism, including a die assembly and a main roller assembly. The die assembly and the main roller assembly are arranged opposite to each other. The gap width between the main roller assembly and the die assembly is adjusted by a first moving component. The main roller assembly and the die assembly are aligned by a second moving component. The die assembly includes multiple stacked die units, with slits formed between adjacent die units. The outlets of the slits converge at the same die lip, which is arranged opposite to the main roller assembly. The die unit at the top is the first die unit, and the die unit below the first die unit is the second die unit. There are multiple second die units, and the first die unit is suspended above the second die units.

[0006] Optionally, the first moving component is connected to the mold head assembly via a mold head fixing frame, and the mold head assembly is located within the mold head fixing frame; The upper side of the first mold head unit is fixedly connected to the inner surface of the top plate of the mold head fixing frame, and / or, the two ends of the first mold head unit are fixedly connected to the inner sides of the two side upright plates of the mold head fixing frame, respectively.

[0007] Optionally, the second mold head unit is connected to the inner surface of the base plate of the mold head fixing frame via a support cylinder, which pushes the second mold head unit closer to or further away from the first mold head unit above it.

[0008] Optionally, the first moving component includes a support plate, a first guide rail, and a first cylinder; The upper side of the support plate is connected to the die head fixing frame, and the lower side of the support plate is provided with a first guide rail and a first cylinder. The support plate is slidably connected to the first guide rail, and the telescopic end of the first cylinder is connected to the support plate. The first cylinder pushes the support plate closer to or away from the main roller assembly.

[0009] Optionally, the second moving component includes a second guide rail, a drive motor, a first lead screw, and a second cylinder; The second guide rail is disposed on the support plate and is axially parallel to the main roller assembly. The second guide rail is located between the support plate and the die head fixing frame. The die head fixing frame is slidably connected to the second guide rail. The drive motor is driven by the first lead screw through the first reducer. The first lead screw is driven by one end of the die head fixing frame. The second cylinder is disposed on the support plate and is connected to the other end of the die head fixing frame.

[0010] Optionally, a die head fixing plate is connected to the upper side of the first die head unit. The die head fixing plate is connected to the rotating shaft of the rotary cutter. Both ends of the rotating shaft of the rotary cutter are connected to the first moving component through support seats. The rotating shaft of the rotary cutter is connected to a rotating motor for transmission.

[0011] Optionally, the first moving component includes a support plate and a first guide rail, and the second moving component includes a second guide rail, a drive motor, and a first lead screw; The upper side of the bearing plate is provided with the second guide rail, which is slidably connected to the support seat. The second guide rail is arranged axially parallel to the main roller assembly. The drive motor is connected to the first lead screw through the first reducer. The first lead screw is connected to the support seat on one side. The support plate is provided with a first guide rail and a first cylinder below it. The support plate is slidably connected to the first guide rail. The telescopic end of the first cylinder is connected to the support plate. The first cylinder pushes the support plate closer to or away from the main roller assembly.

[0012] Optionally, a fine-tuning motor is provided below the support plate. The fine-tuning motor is connected to a second lead screw via a second reducer. The second lead screw is connected to a fine-tuning wedge. The fine-tuning motor drives the fine-tuning wedge to move perpendicular to the support plate. The extension and retraction end of the first cylinder makes rolling contact with the inclined surface of the fine-tuning wedge via a roller.

[0013] Optionally, the multi-layer die head coating mechanism adopts a downward conveyor coating method, in which the foil material is fed downward from above the main roller assembly, passes through the gap between the main roller assembly and the die head assembly, and arrives below the main roller assembly; When adjusting the position of the mold head unit, adjust it sequentially from top to bottom. First, adjust the position of the first mold head unit, and then adjust the positions of the multiple second mold head units from top to bottom.

[0014] Optionally, the second mold head assembly includes a middle mold and a lower mold, the middle mold being located between the first mold head unit and the lower mold, the middle mold forming a first slit with the first mold head unit, and the middle mold forming a second slit with the lower mold.

[0015] Optionally, a receiving box is provided below the die head assembly, and the receiving box is located between the die head assembly and the main roller assembly.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The multi-layer die coating mechanism provided by this utility model coats the foil material supported and conveyed by the main roller assembly through the die assembly. The die assembly includes multiple stacked die units, wherein the first die unit (i.e., the upper die) located at the top is suspended above the second die unit (i.e., the middle die or the lower die). This arrangement structure ensures that after the position of the first die unit is adjusted, the position of the second die unit will not be affected, thus not affecting the coating density. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of an embodiment of the multi-layer die coating mechanism of this utility model; Figure 2 This is a schematic diagram of the first embodiment of the multi-layer die coating mechanism of this utility model; Figure 3 This is a side view of the first embodiment of the multi-layer die coating mechanism of this utility model; Figure 4 This is a cross-sectional view of the first embodiment of the multi-layer die coating mechanism of this utility model; Figure 5 This is a schematic diagram of a second embodiment of the multi-layer die coating mechanism of this utility model; Figure 6 This is a side view of a second embodiment of the multi-layer die coating mechanism of this utility model; Figure 7 This is a cross-sectional view of a second embodiment of the multi-layer die coating mechanism of this utility model.

[0019] Figure label: 100-Die head assembly; 110-Slit; 111-Die head lip; 120-First die head unit; 130-Second die head unit; 131-Middle die; 132-Lower die; 140-Receiving box; 200-Main roller assembly; 210-Main roller; 220-Bearing seat; 230-DD motor; 300-First moving assembly; 310-Bearing plate; 320-First guide rail; 330-First cylinder; 331-Roller; 400-Second moving assembly; 410-The Two guide rails; 420-Drive motor; 421-First reducer; 430-First lead screw; 440-Second cylinder; 500-Die head fixing frame; 510-Support cylinder; 600-Die head fixing plate; 610-Rotating cutter shaft; 620-Support base; 630-Rotating motor; 640-Rotating cutter position sensor; 700-Fine-adjusting motor; 710-Second reducer; 720-Second lead screw; 730-Fine-adjusting wedge; 740-Position sensor; 800-Foil material. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] like Figure 1-7 The diagram shown is a schematic representation of an embodiment of the multi-layer die coating mechanism provided by this utility model.

[0024] Please refer to Figure 1-7 This embodiment includes a die assembly 100 and a main roller assembly 200, which are arranged opposite to each other. The main roller assembly 200 is used for conveying and supporting the foil 800, and the die assembly 100 coats the foil 800 conveyed by the main roller assembly 200. The gap width between the main roller assembly 200 and the die assembly 100 is adjusted by a first moving component 300, which moves the die assembly 100 as a whole, moving it closer to or further away from the main roller assembly 200 in the x-direction to achieve initial adjustment of the gap. The main roller assembly 200 and the die assembly 100 are aligned by a second moving component 400, which moves the die assembly 100 in the y-direction (the axial direction of the main roller assembly 200) to align the coating width of the die assembly 100 with the foil width conveyed by the main roller assembly 200.

[0025] The main roller assembly 200 specifically includes a main roller 210, a bearing housing 220, and a DD motor 230. The two sides of the main roller 210 are supported and connected by the bearing housing 220. The DD motor 230 is connected to the main roller 210 for transmission, driving the main roller 210 to rotate. The rotation of the main roller 210 drives the foil material to be conveyed.

[0026] The die head assembly 100 includes multiple stacked die head units, with slits 110 formed between adjacent die head units. The outlets of the slits 110 converge at a single die head lip 111, which is positioned opposite to the main roller assembly 200. The top die head unit is a first die head unit 120, and the die head units below the first die head unit 120 are second die head units 130. There are multiple second die head units 130, and the first die head unit 120 is suspended above the second die head units 130. In this embodiment, the first die head unit 120 is an upper die, and the second die head unit 130 includes a middle die 131 and a lower die 132. The middle die 131 is located between the upper die 120 and the lower die 132, forming a first slit between the middle die 131 and the first die head unit 120, and a second slit between the middle die 131 and the lower die 132. In other embodiments, the number of second die head units 130 may be greater than two.

[0027] When coating from top to bottom, due to the adjustment sequence, the gap distance between the upper and middle dies and the main roller is adjusted first to adjust the bottom layer GAP value. Then, the distance between the lower die and the main roller is adjusted, and finally, the overall coating GAP value is adjusted. This embodiment adopts a design scheme with a fixed upper die suspension. Once the upper die is adjusted and fixed, when the gap between the lower die 132 and the main roller 210 is adjusted, the gap between the upper die and the main roller 210 will not change, thus ensuring the areal density.

[0028] In one embodiment, such as Figure 2-4 As shown, the first moving component 300 is connected to the mold head component 100 through the mold head fixing frame 500. The mold head fixing frame 500 is hollow inside, and the size of the hollow is larger than the size of the mold head component 100. The mold head component 100 is set inside the mold head fixing frame 500.

[0029] The upper side of the first mold head unit 120 is fixedly connected to the inner surface of the top plate of the mold head fixing frame 500, and / or, the two ends of the first mold head unit 120 are respectively fixedly connected to the inner sides of the two side upright plates of the mold head fixing frame 500.

[0030] Specifically, the first mold head unit 120 and the mold head fixing frame 500 can be connected in three ways. First, the upper side of the first mold head unit 120 is fixedly connected to the inner surface of the top plate of the mold head fixing frame 500, and the two ends of the first mold head unit 120 are respectively fixedly connected to the inner sides of the two side upright plates of the mold head fixing frame 500; second, the upper side of the first mold head unit 120 is fixedly connected to the inner surface of the top plate of the mold head fixing frame 500; third, the two ends of the first mold head unit 120 are respectively fixedly connected to the inner sides of the two side upright plates of the mold head fixing frame 500.

[0031] The first mold head unit 120 is suspended by the aforementioned mold head fixing frame 500, and the position of the first mold head unit 120 is not affected when the position of the second mold head unit 130 below is adjusted.

[0032] Furthermore, the second mold head unit 130 is connected to the inner surface of the base plate of the mold head fixing frame 500 via a support cylinder 510. The support cylinder 510 pushes the second mold head unit 130 closer to or further away from the first mold head unit 120 above it. The distance between the second mold head unit 130 and the first mold head unit 120 is adjusted by the support cylinder 510. Multiple support cylinders 510 can be used, arranged in a row at intervals.

[0033] The top plate and the vertical plate of the mold head fixing frame 500 are detachably connected. The top plate is detachably connected to the first mold head unit 120, and the vertical plate is detachably connected to the first mold head unit 120. When cleaning the mold head assembly 100, the top plate of the mold head fixing frame 500 is separated from the vertical plate and the first mold head unit 120 to facilitate cleaning of the mold head assembly 100. In the absence of the top plate connection and support of the mold head fixing frame 500, the support cylinder 510 supports the second mold head unit 130 to achieve support for the entire mold head assembly 100.

[0034] Specifically, the first moving component 300 includes a support plate 310, a first guide rail 320, and a first cylinder 330. The upper side of the support plate 310 is connected to the die head fixing frame 500, and the first guide rail 320 and the first cylinder 330 are provided below the support plate 310. The support plate 310 is slidably connected to the first guide rail 320, and the telescopic end of the first cylinder 330 is connected to the support plate 310. The first cylinder 330 pushes the support plate 310 closer to or further away from the main roller assembly 200, thereby adjusting the gap between the die head assembly 100 and the main roller assembly 200.

[0035] The first guide rail 320 and the first cylinder 330 are fixedly connected to the mounting frame (not shown). The first guide rail 320 is set in a direction perpendicular to the axial direction of the main roller 210 in the main roller assembly 200. There are two first guide rails 320 and two first cylinders 330, which are symmetrically arranged at both ends of the support plate 310.

[0036] The second moving component 400 includes a second guide rail 410, a drive motor 420, a first lead screw 430, and a second cylinder 440. The second guide rail 410 is disposed on the support plate 310 and is axially parallel to the main roller assembly 200. The second guide rail 410 is located between the support plate 310 and the die head fixing frame 500. The die head fixing frame 500 is slidably connected to the second guide rail 410. The drive motor 420 is driven by the first reducer 421 and the first lead screw 430. The first lead screw 430 is driven by one end of the die head fixing frame 500. The drive motor 420 drives the support plate 310 to move in the y-direction, thereby realizing the movement of the die head assembly 100 and its alignment with the main roller assembly 200.

[0037] The second cylinder 440 is mounted on the support plate 310 and is connected to the other end of the die head fixing frame 500. The second cylinder 440 continuously presses against the die head fixing frame 500 to eliminate the backlash of the first lead screw 330.

[0038] In one embodiment, such as Figure 5-7 As shown, a die head fixing plate 600 is connected to the upper side of the first die head unit 120. The die head fixing plate 600 is connected to the rotary blade rotating shaft 610. Both ends of the rotary blade rotating shaft 610 are connected to the first moving component 300 through support seats 620. The rotary blade rotating shaft 610 is connected to the rotating motor 630 for transmission. The rotating motor 630 drives the rotary blade rotating shaft 610 to rotate, thereby causing the die head fixing plate 600 to flip, so that the die head assembly 100 flips 180 degrees. When the die head assembly 100 is coating, the rotating motor 630 drives the die head fixing plate 600 to flip, so that the die head assembly 100 is suspended below the die head fixing plate 600. When the die head assembly 100 finishes coating, the rotating motor 630 drives the die head fixing plate 600 to flip 180 degrees, so that the die head assembly 100 is above the die head fixing plate 600, which facilitates the cleaning of the die head assembly 100.

[0039] Specifically, the first moving assembly 300 includes a support plate 310 and a first guide rail 320, and the second moving assembly 400 includes a second guide rail 410, a drive motor 420, and a first lead screw 430. There are two support plates 310, distributed at both ends of the die assembly 100. The second guide rail 410 is provided on the upper side of each support plate 310, and is slidably connected to the support base 620. The second guide rail 410 is axially parallel to the main roller assembly 200. The drive motor 420 is driven by the first lead screw 430 via a first reducer 421, and the first lead screw 430 is driven by one of the support bases 620. The drive motor 420 pushes one of the support bases 620 to move along the direction of the second guide rail 410, thereby driving the entire die assembly 100 to move along the direction of the second guide rail 410.

[0040] Below the support plate 310, there is a first guide rail 320 and a first cylinder 330. The support plate 310 is slidably connected to the first guide rail 320. The telescopic end of the first cylinder 330 is connected to the support plate 310. The first cylinder 330 pushes the support plate 310 closer to or further away from the main roller assembly 200. The first guide rail 320 and the first cylinder 330 are specifically fixedly connected to the mounting frame (not shown).

[0041] In one embodiment, a fine-tuning motor 700 is provided below the support plate 310. The fine-tuning motor 700 is connected to a second lead screw 720 via a second reducer 710. The second lead screw 720 is connected to a fine-tuning inclined block 730. The fine-tuning motor 700 drives the fine-tuning inclined block 730 to move perpendicular to the support plate 310. The extension end of the first cylinder 330 makes rolling contact with the inclined surface of the fine-tuning inclined block 730 via a roller 331. By driving the fine-tuning motor 700 to move the fine-tuning inclined block 730 in the vertical direction, the support plate 310 is finely adjusted in the horizontal movement direction (towards or away from the main roller assembly 200).

[0042] In one embodiment, a receiving box 140 is provided below the die head assembly 100. The receiving box 140 is located between the die head assembly 100 and the main roller assembly 200 and is used to collect waste material dripping from the die head assembly 100 during coating.

[0043] In the above embodiments, both the first lead screw 430 and the second lead screw 720 are fine-tuning lead screws.

[0044] like Figure 4 and 7 As shown, the multi-layer die head coating mechanism adopts a downward conveyor coating method. The foil 800 is fed downward from above the main roller assembly 200, passes through the gap between the main roller assembly 200 and the die head assembly 100, and comes to the bottom of the main roller assembly 200.

[0045] When adjusting the position of the mold head unit, adjust it sequentially from top to bottom. First, adjust the position of the first mold head unit 120, and then adjust the positions of the multiple second mold head units 130 from top to bottom.

[0046] The following detailed description is provided in conjunction with specific embodiments. like Figure 2-4 As shown, in the first embodiment, the first mold head unit 120 is suspended using a mold head fixing frame 500.

[0047] In this embodiment, the upper mold (first mold unit 120) in the mold assembly 100 is fixed by the mold head fixing frame 500. After the upper mold is adjusted and fixed, when the gap between the lower mold 132 and the main roller 210 is adjusted, the gap between the upper mold and the main roller 210 will not change, thus ensuring the surface density. The upper mold of the mold assembly 100 is fixed to the inner upper surface of the mold head fixing frame 500, so that the lower part of the mold assembly 100 is suspended. Alternatively, the upper mold can be fixed by only the two side plates, with the middle hollowed out, to facilitate the cleaning of the mold assembly 100. At the same time, multiple support cylinders 510 are evenly arranged in the lower suspended position. When the mold assembly 100 needs to be cleaned, the lower support cylinders 510 extend to support the lower mold 132, thereby supporting the entire mold assembly 100. Then, the top plate of the mold head fixing frame 500 can be removed to clean the mold assembly 100. The die head fixing frame 500 is slidably connected to the second guide rail 410 of the support plate 310. A drive motor 420 on the left side of the support plate 310, through a first reducer 421 and a first lead screw 430, allows the die head assembly 100 to move laterally (in the y-direction). A second cylinder 440 on the right side of the support plate 310 continuously presses against the first lead screw 430 to eliminate gaps, thereby achieving precise adjustment of the coating position. The first guide rail 320 is located below the support plate 310. The first cylinder 330 drives the support plate 310 to move in the x-direction, moving the die head assembly 100 forward to the coating position. A fine-tuning motor 700 performs limit adjustments through the second reducer 710, the second lead screw 720, and the fine-tuning wedge 730, and forms a closed loop with the position sensor 740 to ensure the position of the die head assembly 100, thereby precisely adjusting the GAP value between the die head lip 111 and the main roller 210, ensuring the uniformity of the coating surface density.

[0048] like Figure 5-7 As shown, in the second embodiment, the first mold head unit 120 is flipped and suspended using a mold head fixing plate 600 combined with a rotary cutter shaft 610.

[0049] The rotary blade shaft 610 is slidably connected to the first guide rail 410 via a support base 620. The first guide rail 320 is fixed on the support plate 310. A drive motor 420 on the left side of the support plate 310 enables the die head assembly to move laterally via a first reducer 421 and a first lead screw 430. A hydraulic buffer on the right side eliminates lead screw backlash, thereby precisely adjusting the coating position. The support plate 310 is fixed on the second guide rail 320. The die head assembly 100 is moved forward to the coating position by a die head advance cylinder. The fine-tuning motor 700 is limited and adjusted by the second reducer 710, the second lead screw 720, and the fine-tuning wedge 730 mechanism, and forms a closed loop with the position sensor 740 to ensure the die head position, thereby precisely adjusting the GAP value between the die head lip 111 and the main roller 210. Furthermore, the rotary motor 630 can drive the rotary blade shaft 610 to rotate. When the die head assembly 100 needs cleaning, it can be rotated 180° upwards for cleaning. During coating, it flips to the coating position and forms a closed loop with the rotary blade position sensor 640 to adjust the GAP value between the die head lip 111 and the main roller 210, thereby ensuring the uniformity of the coating surface density.

[0050] In summary, the multi-layer die coating mechanism embodiment provided by this utility model coats the foil material supported and conveyed by the main roller assembly through the die assembly. The die assembly includes multiple stacked die units, wherein the first die unit (i.e., the upper die) located at the top is suspended above the second die unit (i.e., the middle die or the lower die). This arrangement structure ensures that after the position of the first die unit is adjusted, the position of the second die unit will not be affected, thus not affecting the coating density.

[0051] 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 multi-layer die coating mechanism, characterized in that, The device includes a die head assembly and a main roller assembly, which are arranged opposite to each other. The gap width between the main roller assembly and the die head assembly is adjusted by a first moving component, and the main roller assembly and the die head assembly are aligned by a second moving component. The die head assembly includes multiple stacked die head units, with slits formed between adjacent die head units. The outlets of the slits converge at the same die head lip, which is arranged opposite to the main roller assembly. The die head unit at the top is the first die head unit, and the die head unit below the first die head unit is the second die head unit. There are multiple second die head units, and the first die head unit is suspended above the second die head units.

2. The multi-layer die coating mechanism according to claim 1, characterized in that, The first movable component is connected to the mold head component via a mold head fixing frame, and the mold head component is located within the mold head fixing frame; The upper side of the first mold head unit is fixedly connected to the inner surface of the top plate of the mold head fixing frame, and / or, the two ends of the first mold head unit are fixedly connected to the inner sides of the two side upright plates of the mold head fixing frame, respectively.

3. The multi-layer die coating mechanism according to claim 2, characterized in that, The second mold head unit is connected to the inner surface of the base plate of the mold head fixing frame through a support cylinder, which pushes the second mold head unit closer to or further away from the first mold head unit above it.

4. The multi-layer die coating mechanism according to claim 2, characterized in that, The first moving component includes a support plate, a first guide rail, and a first cylinder; The upper side of the support plate is connected to the die head fixing frame, and the lower side of the support plate is provided with a first guide rail and a first cylinder. The support plate is slidably connected to the first guide rail, and the telescopic end of the first cylinder is connected to the support plate. The first cylinder pushes the support plate closer to or away from the main roller assembly.

5. The multi-layer die coating mechanism according to claim 4, characterized in that, The second moving component includes a second guide rail, a drive motor, a first lead screw, and a second cylinder; The second guide rail is disposed on the support plate and is axially parallel to the main roller assembly. The second guide rail is located between the support plate and the die head fixing frame. The die head fixing frame is slidably connected to the second guide rail. The drive motor is driven by the first lead screw through the first reducer. The first lead screw is driven by one end of the die head fixing frame. The second cylinder is disposed on the support plate and is connected to the other end of the die head fixing frame.

6. The multi-layer die coating mechanism according to claim 1, characterized in that, The upper side of the first mold head unit is connected to a mold head fixing plate, the mold head fixing plate is connected to a rotary cutter rotating shaft, the two ends of the rotary cutter rotating shaft are connected to the first moving component through support seats, and the rotary cutter rotating shaft is connected to a rotating motor for transmission.

7. The multi-layer die coating mechanism according to claim 6, characterized in that, The first moving component includes a support plate and a first guide rail, and the second moving component includes a second guide rail, a drive motor, and a first lead screw; The upper side of the bearing plate is provided with the second guide rail, which is slidably connected to the support seat. The second guide rail is arranged axially parallel to the main roller assembly. The drive motor is connected to the first lead screw through the first reducer. The first lead screw is connected to the support seat on one side. The support plate is provided with a first guide rail and a first cylinder below it. The support plate is slidably connected to the first guide rail. The telescopic end of the first cylinder is connected to the support plate. The first cylinder pushes the support plate closer to or away from the main roller assembly.

8. The multi-layer die coating mechanism according to claim 5 or 7, characterized in that, A fine-tuning motor is provided below the support plate. The fine-tuning motor is connected to a second lead screw through a second reducer. The second lead screw is connected to a fine-tuning wedge. The fine-tuning motor drives the fine-tuning wedge to move perpendicular to the support plate. The extension and retraction end of the first cylinder makes rolling contact with the inclined surface of the fine-tuning wedge through a roller.

9. The multi-layer die coating mechanism according to claim 1, characterized in that, The multi-layer die head coating mechanism adopts a downward conveyor coating method. The foil material is fed downward from above the main roller assembly, passes through the gap between the main roller assembly and the die head assembly, and comes to the bottom of the main roller assembly. When adjusting the position of the mold head unit, adjust it sequentially from top to bottom. First, adjust the position of the first mold head unit, and then adjust the positions of the multiple second mold head units from top to bottom.

10. The multi-layer die coating mechanism according to claim 1, characterized in that, A receiving box is provided below the die head assembly, and the receiving box is located between the die head assembly and the main roller assembly.

Images