Multidirectional adjusting device of coating die head

Abstract

The invention relates to a multidirectional adjusting device of a coating die head, which comprises a rack, a rolling mechanism arranged on the rack and provided with a back roller, and a coating mechanism used for coating a foil, the coating mechanism comprises an upper die, a lower die matched with the upper die, and a gasket arranged between the upper die and the lower die, the upper die, the gasket and the lower die are closed to form a discharging lip nozzle with a partition flow control function, the bottom of the lower die is connected with a multidirectional adjusting mechanism, and the multidirectional adjusting mechanism comprises a left-right fine adjustment assembly arranged at the bottom of the lower die and a front-back adjustment assembly connected with the left-right fine adjustment assembly. The left-right fine adjustment assembly is arranged to drive the upper die, the gasket and the lower die to integrally and horizontally move, the relative position of the discharging lip nozzle and the foil is accurately controlled, the problem that the widths of blank spaces on the two sides are different is effectively solved, the front-back adjustment assembly can dynamically adjust the distance between the discharging lip nozzle and the back roller, and it is ensured that the thickness of a wet film is uniform; and the thickness control precision of the electrode coating is improved.

Description

Technical Field

[0001] This invention relates to lithium battery manufacturing equipment technology, and more particularly to a multi-directional adjustment device for a coating die head. Background Technology

[0002] In the manufacturing process of lithium battery electrodes, the coating process directly affects the uniformity, capacity consistency and cycle life of the electrodes. Lithium iron phosphate slurry needs to be uniformly coated on aluminum foil substrate, and precise "blank" areas are reserved on both sides to ensure the safety of subsequent winding. However, existing coating equipment has several technical bottlenecks in actual operation.

[0003] First, the foil is prone to lateral shift during unwinding and traction, resulting in asymmetrical coating edges and inconsistent blank widths. Currently, coarse adjustments are mainly made using an air shaft correction system, but this method is an upstream adjustment and lacks dynamic compensation capabilities at the die head end. Moreover, the equipment is expensive and difficult to popularize. Second, the wet film thickness is determined by the gap between the discharge lip and the back roller. This gap is easily affected by equipment thermal deformation, mechanical wear, and foil thickness fluctuations. Traditional dies are mostly fixed structures or only support overall parameter adjustment, which cannot achieve real-time and precise adjustment of the lip spacing, resulting in uneven coating thickness and affecting the consistency of battery performance. In addition, traditional coating dies can usually only adjust the flow rate or pressure as a whole through the human-machine interface and do not have zonal control functions. When local density abnormalities such as edge thickening and center thinning occur, it is necessary to rely on X-ray or beta-ray thickness gauges for detection, then stop the machine for adjustment, or even disassemble and clean, which seriously affects production efficiency and product yield. Summary of the Invention

[0004] The present invention aims to solve the problems existing in the prior art by providing a method that integrates a mechanical micrometer zone controller and a multi-directional fine-tuning mechanism to achieve precise local control of coating density and dynamic compensation for blank areas, thereby improving coating quality, stability and production efficiency.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: a multi-directional adjustment device for a coating die head, a frame, a roller mechanism with a back roller mounted on the frame, and a coating mechanism for coating foil. The coating mechanism includes an upper die, a lower die matching the upper die, and a spacer disposed between the upper die and the lower die. The upper die, the spacer, and the lower die are joined to form a discharge lip with a zoned flow control function. The bottom of the lower die is connected to a multi-directional adjustment mechanism, which includes: a left-right fine-tuning component disposed at the bottom of the lower die and a front-back adjustment component connected to the left-right fine-tuning component. The front-back adjustment component is used to adjust the distance between the discharge lip and the back roller. The left-right fine-tuning component is used to drive the upper die, the gasket and the lower die to move horizontally slightly along the length of the back roller to compensate for the positional deviation of the foil on the back roller and control the symmetry of the coating blank area.

[0006] Preferably, the left-right fine-tuning component includes a first driving cylinder, an adjustment plate with a lower mold mounted on its upper end, and a support plate disposed below the adjustment plate, wherein the driving end of the first driving cylinder is connected to the left side of the adjustment plate. When the first drive cylinder is activated, the drive end of the first drive cylinder drives the adjustment plate to move along the length of the back roller on the support plate, thereby achieving symmetrical compensation of the coating blank area.

[0007] Preferably, the upper end face of the support plate is provided with a groove, and a transverse linear guide rail is provided in the groove. A transverse sliding slider is installed at the lower end of the adjusting plate, and the transverse sliding slider is disposed in the groove and slidably connected to the transverse linear guide rail.

[0008] Preferably, limit blocks are provided on both sides of the support plate, and limit grooves are provided at both ends of the adjusting plate. The limit blocks are T-shaped and disposed in the limit grooves. A first contact surface is provided on the inner side of the limit block, a second contact surface is provided at the rear end of the limit block, a third contact surface is provided on the inner wall of the limit groove, and a fourth contact surface is provided on the top of the adjusting plate. When the adjusting plate moves along the length of the back roller on the support plate, the first contact surface and the second contact surface move against each other. When the adjusting plate moves upward away from the support plate, the third contact surface and the fourth contact surface move and abut against each other.

[0009] Preferably, the end face of the adjusting plate away from the back roller is provided with a pointer, and the end face of the support plate away from the back roller is provided with a scale, and the pointer slides above the scale.

[0010] Preferably, the forward and backward adjustment assembly includes a second drive cylinder, a longitudinal linear guide rail, and a longitudinal moving slider below the support plate. The longitudinal moving slider is slidably connected to the longitudinal linear guide rail, and the drive end of the second drive cylinder is connected to the support plate to drive the support plate to move longitudinally and adjust the distance between the discharge lip and the back roller.

[0011] Preferably, a first extended bending arm is provided on the side wall of the support plate, the upper end of the first extended bending arm is connected to the side wall of the support plate, and the lower end of the first extended bending arm is connected to the driving end of the second driving cylinder.

[0012] Preferably, the multi-directional adjustment mechanism further includes a third drive cylinder and a second extended bending arm connected to the support plate. The drive end of the third drive cylinder is connected to the second extended bending arm, which can drive the lower mold to move in the vertical direction.

[0013] Preferably, the upper mold is provided with a plurality of mechanical micrometer zone controllers along its length. Each zone controller can independently adjust the paint flow rate of the corresponding zone discharge lip to achieve localized precise control of the coating density. The controller includes a support set at the upper end of the upper mold, a micrometer is installed inside the support, and a T-block is installed at the lower end of the micrometer. The T-block and the gasket are adapted to control the height of the coating slit.

[0014] Preferably, a third extended curved arm is provided on the side wall of the support plate. The third extended curved arm is oriented in the opposite direction to the first extended curved arm. The upper end of the third extended curved arm is connected to the side wall of the support plate, and the lower end of the third extended curved arm is connected to a length gauge.

[0015] The present invention has the following beneficial effects: 1. By setting up left and right fine adjustment components, the lateral offset of the foil on the back roller during operation can be compensated in real time, driving the upper mold, pad and lower mold to move horizontally as a whole, accurately controlling the relative position of the discharge lip and the foil, effectively solving the problem of uneven blank width on both sides, ensuring the safety of subsequent winding process and the stability of battery performance. The front and rear adjustment components can dynamically adjust the distance between the discharge lip and the back roller to adapt to the thermal deformation of the equipment, mechanical error or the thickness fluctuation of different batches of substrates, ensuring uniform wet film thickness and improving the thickness control accuracy of electrode coating.

[0016] 2. The upper mold is equipped with multiple mechanical micrometer zone controllers, and the slit height of each zone can be adjusted independently to achieve localized and precise control of paint flow. This effectively solves the problem of uneven density defects such as edge thickening and center thinning. Fine adjustments can be made without stopping the machine, thus improving production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the coating machine; Figure 2 This is a schematic diagram of the multi-directional adjustment device; Figure 3 for Figure 2 Schematic diagram of the structure at point A; Figure 4 This is a schematic diagram of the structure of the second drive cylinder and the first extended bending arm; Figure 5 This is a sectional view of the adjusting plate and the support plate; Figure 6 This is a schematic diagram of the gasket structure.

[0018] Explanation of reference numerals in the attached figures: 1. Rack; 2. Roller mechanism; 20. Back roller; 3. Coating mechanism; 30. Upper die; 31. Lower die; 32. Gasket; 33. Controller; 300. Discharge lip; 301. Support; 302. Micrometer; 303. T-block; 4. Multi-directional adjustment mechanism; 40. Left-right fine-tuning component; 41. Front-back adjustment component; 400. First drive cylinder; 401. Adjustment plate; 402. Support plate; 403. Slide groove; 404. Transverse linear guide rail; 405. Transverse moving slider; 406. Limiting block; 407. Limiting groove; 408. First contact surface; 409. Second contact surface; 410. Third contact surface; 411. Fourth contact surface; 412. Pointer; 413. Scale; 414. Second drive cylinder; 415. Longitudinal linear guide rail; 416. Longitudinal moving slider; 417. First extended bending arm; 418. Third drive cylinder; 419. Second extended bending arm; 420. Third extended bending arm; 421. Length gauge. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] like Figures 1 to 6 As shown, a multi-directional adjustment device for a coating die head includes a frame 1, a roller mechanism 2 with a back roller 20 mounted on the frame 1, and a coating mechanism 3 for coating foil. The coating mechanism 3 includes an upper die 30, a lower die 31 matched with the upper die 30, and a shim 32 disposed between the upper die 30 and the lower die 31. The upper die 30, the shim 32, and the lower die 31 are closed to form a discharge lip 300 with a zoned flow control function. The bottom of the lower die 31 is connected to a multi-directional adjustment mechanism 4. The multi-directional adjustment mechanism 4 includes a left-right fine-tuning component 40 disposed at the bottom of the lower die 31 and a front-back adjustment component 41 connected to the left-right fine-tuning component 40. The front-back adjustment component 41 is used to adjust the distance between the discharge lip 300 and the back roller 20. The left-right fine-tuning component 40 is used to drive the upper die 30, the shim 32, and the lower die 31 to move horizontally slightly along the length direction of the back roller 20 to compensate for the positional deviation of the foil on the back roller and control the symmetry of the coating blank area.

[0021] This coating equipment includes a frame 1, a roller mechanism 2, a coating mechanism 3, and a detection mechanism (a pair of grating sensors). The coating mechanism 3 is composed of an upper mold 30, a lower mold 31, and an intermediate gasket 32, which together form a discharge lip 300 with zoned flow control function to achieve uniform extrusion of the slurry. In this embodiment, a multi-directional adjustment mechanism 4 is connected to the bottom of the lower mold 31. This mechanism includes a left-right fine-tuning component 40 and a forward-backward adjustment component 41 linked to it. The forward-backward adjustment component 41 drives the support structure to move longitudinally through a drive mechanism (such as a cylinder), thereby precisely adjusting the gap between the discharge lip 300 and the back roller 20, effectively addressing the gap caused by equipment thermal deformation, mechanical errors, or foil thickness fluctuations. To address the issue of uneven coating thickness and ensure consistent wet film thickness, the left-right micro-adjustment component 40 uses a drive element (such as the first drive cylinder 400) to drive the adjustment plate 401 to slide horizontally along the length of the back roller 20 on the guide rail. This, in turn, pushes the upper die 30, the pad 32, and the lower die 31 to shift laterally as a whole, compensating for the lateral offset of the foil on the back roller during operation. This significantly improves the symmetry and dimensional consistency of the blank areas on both sides. This multi-directional adjustment structure not only enhances the die head's adaptability to process fluctuations but also avoids excessive reliance on expensive correction systems. It supports online dynamic adjustment, reduces downtime, and improves production efficiency and coating quality stability. It is particularly suitable for continuous coating production of high-precision lithium battery electrodes.

[0022] like Figure 1 and Figure 2 As shown, the left-right fine-tuning component 40 includes a first driving cylinder 400, an adjusting plate 401 with a lower mold 31 mounted on its upper end, and a support plate 402 disposed below the adjusting plate 401. The driving end of the first driving cylinder 400 is connected to the left side of the adjusting plate 401. When the first driving cylinder 400 is activated, the driving end of the first driving cylinder 400 drives the adjusting plate 401 to move along the length direction of the back roller 20 on the support plate 402, thereby achieving symmetrical compensation of the coating blank area.

[0023] The left-right fine-tuning component 40 achieves precise lateral movement of the coating die head through the coordinated structure of the first drive cylinder 400, the adjusting plate 401, and the support plate 402. The drive end of the first drive cylinder 400 is connected to the left side of the adjusting plate 401. When the cylinder is activated, the piston rod extends and retracts, causing the adjusting plate 401 to move horizontally along the length of the back roller 20, thereby pushing the lower die 31, the gasket 32, and the upper die 30 to move synchronously. This compensates for coating position deviations caused by foil misalignment in real time, ensuring that the discharge lip 300 is in the same position as the foil edge. This effectively improves the symmetry of the blank areas on both sides, avoids the risk of short circuits in subsequent winding caused by uneven blanking, and achieves online dynamic adjustment, improving production continuity and product quality stability.

[0024] like Figure 2 and Figure 5As shown, a groove 403 is provided on the upper end surface of the support plate 402, and a transverse linear guide rail 404 is provided in the groove 403. A transverse sliding slider 405 is installed on the lower end of the adjusting plate 401. The transverse sliding slider 405 is disposed in the groove 403 and slidably connected to the transverse linear guide rail 404.

[0025] To ensure the smoothness and guiding accuracy of the adjustment plate 401, a groove 403 is provided on the upper surface of the support plate 402, and a transverse linear guide rail 404 arranged along the length of the back roller is installed in the groove. A matching transverse sliding slider 405 is installed at the lower end of the adjustment plate 401. The slider is embedded in the groove 403 and forms a sliding fit with the linear guide rail. The high-precision linear guide rail provides low-friction and high-rigidity guiding support, which significantly improves the smoothness of movement and repeatability of positioning during the adjustment process, prevents adjustment errors caused by shaking or jamming, and ensures that the die head maintains a stable posture during left and right fine adjustment. This ensures the consistency of coating width and edge quality, and meets the stringent requirements for position control in high-precision lithium battery electrode coating.

[0026] like Figure 2 and Figure 3 As shown, limit blocks 406 are provided on both sides of the support plate 402, and limit grooves 407 are provided at both ends of the adjusting plate 401. The limit blocks 406 are T-shaped and are located in the limit grooves 407. The inner side of the limit blocks 406 is provided with a first contact surface 408, the rear end of the limit blocks 406 is provided with a second contact surface 409, the inner wall of the limit grooves 407 is provided with a third contact surface 410, and the upper part of the adjusting plate 401 is provided with a fourth contact surface 411. When the adjusting plate 401 moves along the length of the back roller 20 on the support plate 402, the first contact surface 408 and the second contact surface 409 move against each other. When the adjusting plate 401 moves upward away from the support plate 402, the third contact surface 410 and the fourth contact surface 411 move against each other.

[0027] A limiting block 406 and a limiting groove 407 are provided between the adjusting plate 401 and the support plate 402 to achieve bidirectional limiting protection. The limiting block 406 is T-shaped and fixed on both sides of the support plate 402, and embedded in the corresponding limiting grooves 407 at both ends of the adjusting plate 401. When the adjusting plate 401 moves normally left and right, the first contact surface 408 on the inner side of the limiting block 406 abuts against the second contact surface 409 at the rear end of the limiting groove 407 to limit the maximum stroke and prevent damage from overtravel. When the adjusting plate 401 tends to detach upward due to vibration or loose assembly, the third contact surface 410 on the inner wall of the limiting groove 407 contacts the fourth contact surface 411 above the adjusting plate 401 to form an anti-detachment limiting structure. This dual limiting structure not only ensures the safety and reliability of lateral adjustment, but also effectively prevents the die head from accidentally falling off during equipment operation, improving the stability and safety of the overall device.

[0028] likeFigure 2 As shown, the end face of the adjusting plate 401 away from the back roller 20 is provided with a pointer 412, and the end face of the support plate 402 away from the back roller 20 is provided with a scale 413, with the pointer 412 sliding above the scale 413.

[0029] To facilitate intuitive monitoring of the adjustment amount by operators, pointers 412 are provided on both the left and right sides of the end face of the adjustment plate 401 away from the back roller 20, and a scale 413 is provided at the corresponding position on the support plate 402. The pointers 412 are located above the scale 413 and move synchronously with the adjustment plate 401. By observing the position change of the pointers 412 on the scale 413, the specific value of the lateral displacement of the die head can be read in real time, realizing visual monitoring of the adjustment process. No power supply is required, which is suitable for industrial field environments. It helps to quickly judge the compensation status, record adjustment data, and assist in debugging and maintenance, improving the convenience of human-machine interaction and the accuracy of operation.

[0030] like Figure 2 and Figure 4 As shown, the forward and backward adjustment assembly 41 includes a second drive cylinder 414, a longitudinal linear guide rail 415, and a longitudinal moving slider 416 below the support plate 402. The longitudinal moving slider 416 is slidably connected to the longitudinal linear guide rail 415. The drive end of the second drive cylinder 414 is connected to the support plate 402 to drive the support plate 402 to move longitudinally and adjust the distance between the discharge lip 300 and the back roller 20.

[0031] The forward and backward adjustment component 41 achieves precise control of the distance between the discharge lip 300 and the back roller 20 through the coordinated structure of the second drive cylinder 414, the longitudinal linear guide rail 415, and the longitudinal moving slider 416. The longitudinal moving slider 416 is installed below the support plate 402 and slides in cooperation with the longitudinal linear guide rail 415 to form a stable guiding system. The drive end of the second drive cylinder 414 is connected to the support plate 402 and pushes it to move in the longitudinal direction, thereby driving the entire lower mold 31 and upper mold 30 assembly to move forward and backward, and adjust the gap between the lip and the back roller 20 in real time. This effectively copes with the coating thickness fluctuation caused by equipment thermal deformation, mechanical wear, or differences in the thickness of different batches of foil, and ensures that the wet film thickness is uniform.

[0032] like Figure 2 and Figure 4 As shown, a first extended bending arm 417 is provided on the side wall of the support plate 402. The upper end of the first extended bending arm 417 is connected to the side wall of the support plate 402, and the lower end of the first extended bending arm 417 is connected to the driving end of the second driving cylinder 414.

[0033] To optimize the force transmission path and avoid spatial interference, the side wall of the support plate 402 is provided with a first extended curved arm 417 that is straight on both sides and bent in the middle to form a clamping structure. The upper end of the curved arm is fixedly connected to the support plate 402, and the lower end is hinged to the driving end of the second driving cylinder 414. This curved arm structure, while ensuring transmission rigidity, cleverly avoids other mechanical components (such as pipelines, sensors, etc.), realizes the effective layout of the cylinder in the limited installation space, and makes the driving force line closer to the center of gravity of the support plate 402, reducing the risk of off-center loading and motion jamming, and improving the smoothness and response accuracy of front and rear adjustment.

[0034] like Figure 2 and Figure 4 As shown, the multi-directional adjustment mechanism 4 also includes a third drive cylinder 418 and a second extended bending arm 419 connected to the support plate 402. The drive end of the third drive cylinder 418 is connected to the second extended bending arm 419, which can drive the lower mold 31 to move in the vertical direction.

[0035] The multi-directional adjustment mechanism 4 also integrates a third drive cylinder 418 and a second extended bending arm 419 to realize the vertical lifting and lowering adjustment of the lower mold 31. The second extended bending arm 419 has an overall "U" shape structure. One end of the second extended bending arm 419 is connected to the support plate 402. The third drive cylinder 418 is set vertically. The other end of the second extended bending arm 419 is connected to the drive end of the third drive cylinder 418. The third drive cylinder 418 is connected to the support plate 402 through the second extended bending arm 419, driving it to move in the vertical direction, thereby driving the entire mold head to move up and down. This is used for switching substrates of different thicknesses or for process debugging scenarios, expanding the process adaptability range of the equipment and improving the flexibility and versatility of the coating system.

[0036] like Figure 2 , Figure 5 and Figure 6 As shown, the upper mold 30 is provided with several mechanical micrometers 302 and partition controllers 33 along its length. Each partition controller 33 can independently adjust the paint flow rate of the corresponding partition discharge lip 300 to achieve local precise control of coating density. The controller 33 includes a support 301 set at the upper end of the upper mold 30. The micrometer 302 is installed inside the support 301. A T-block 303 is installed at the lower end of the micrometer 302. The T-block 303 and the gasket 32 ​​are adapted to control the height of the coating slit.

[0037] Multiple mechanical micrometers 302 are set along the length of the upper mold 30, and each controller 33 corresponds to a discharge area. It can independently adjust the local coating flow rate. The controller 33 consists of a support 301, a micrometer 302 and a T-block 303. When the micrometer 302 rotates, it drives the T-block 303 to move up and down. The bottom of the T-block 303 is inserted into the adjustment hole of the shim 32. The coating flow rate is finely adjusted by changing the height of the local slit. This mechanical adjustment method does not rely on an electronic control system. It is intuitive to operate and responds quickly. It can achieve local precise control of coating density, effectively solve common defects such as edge thickening and center thinning, and significantly improve coating uniformity and product consistency.

[0038] like Figure 2 and Figure 4 As shown, a third extended bending arm 420 is provided on the side wall of the support plate 402. The third extended bending arm 420 is oriented opposite to the first extended bending arm 417. The upper end of the third extended bending arm 420 is connected to the side wall of the support plate 402, and the lower end of the third extended bending arm 420 is connected to a length gauge 421.

[0039] To achieve closed-loop feedback in the adjustment process, the support plate 402 is provided with a third extended bending arm 420 on its side wall. Its orientation is opposite to that of the first extended bending arm 417. A length gauge 421 is connected to its lower end. The probe of the length gauge 421 abuts against the fixed reference surface to detect the displacement of the support plate 402 or the adjustment plate 401 in real time and feeds the signal back to the control system to achieve precise position monitoring of front-back or left-right adjustment.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A multi-directional adjustment device for a coating die head, comprising a frame (1), a roller mechanism (2) having a back roller (20) disposed on the frame (1), and a coating mechanism (3) for coating foil, wherein the coating mechanism (3) comprises an upper die (30), a lower die (31) matching the upper die (30), and a shim (32) disposed between the upper die (30) and the lower die (31), characterized in that: The upper mold (30), the gasket (32), and the lower mold (31) are joined to form a discharge lip (300) with zoned flow control function, wherein... The bottom of the lower mold (31) is connected to a multi-directional adjustment mechanism (4). The multi-directional adjustment mechanism (4) includes: a left-right fine adjustment component (40) disposed at the bottom of the lower mold (31) and a front-back adjustment component (41) connected to the left-right fine adjustment component (40). The front-back adjustment component (41) is used to adjust the distance between the discharge lip (300) and the back roller (20). The left-right fine adjustment component (40) is used to drive the upper mold (30), the pad (32) and the lower mold (31) to move horizontally slightly along the length direction of the back roller (20) to compensate for the position deviation of the foil on the back roller (20) and control the symmetry of the coating blank area.

2. The multi-directional adjustment device for a coating die head according to claim 1, characterized in that: The left and right fine adjustment component (40) includes a first drive cylinder (400), an adjustment plate (401) with a lower mold (31) mounted on its upper end, and a support plate (402) disposed below the adjustment plate (401). The drive end of the first drive cylinder (400) is connected to the left side of the adjustment plate (401). When the first drive cylinder (400) is activated, the drive end of the first drive cylinder (400) drives the adjustment plate (401) to move along the length direction of the back roller (20) on the support plate (402) to achieve symmetrical compensation of the coating blank area.

3. The multi-directional adjustment device for a coating die head according to claim 2, characterized in that: The upper end face of the support plate (402) is provided with a groove (403), and a transverse linear guide rail (404) is provided in the groove (403). A transverse sliding slider (405) is installed at the lower end of the adjusting plate (401). The transverse sliding slider (405) is provided in the groove (403) and is slidably connected to the transverse linear guide rail (404).

4. The multi-directional adjustment device for a coating die head according to claim 3, characterized in that: Limiting blocks (406) are provided on both sides of the support plate (402), and limiting grooves (407) are provided at both ends of the adjusting plate (401). The limiting blocks (406) are T-shaped and are located in the limiting grooves (407). The inner side of the limiting blocks (406) is provided with a first contact surface (408), the rear end of the limiting blocks (406) is provided with a second contact surface (409), the inner wall of the limiting grooves (407) is provided with a third contact surface (410), and the upper part of the adjusting plate (401) is provided with a fourth contact surface (411). When the adjusting plate (401) moves along the length of the back roller (20) on the support plate (402), the first contact surface (408) and the second contact surface (409) move against each other. When the adjusting plate (401) moves upward away from the support plate (402), the third contact surface (410) and the fourth contact surface (411) move to abut against each other.

5. The multi-directional adjustment device for a coating die head according to claim 3, characterized in that: The end face of the adjusting plate (401) away from the back roller (20) is provided with a pointer (412), and the end face of the support plate (402) away from the back roller (20) is provided with a scale (413). The pointer (412) slides above the scale (413).

6. The multi-directional adjustment device for a coating die head according to claim 2, characterized in that: The forward and backward adjustment assembly (41) includes a second drive cylinder (414), a longitudinal linear guide rail (415), and a longitudinal moving slider (416) below the support plate (402). The longitudinal moving slider (416) is slidably connected to the longitudinal linear guide rail (415). The drive end of the second drive cylinder (414) is connected to the support plate (402) to drive the support plate (402) to move longitudinally and adjust the distance between the discharge lip (300) and the back roller (20).

7. The multi-directional adjustment device for a coating die head according to claim 6, characterized in that: The support plate (402) has a first extended bending arm (417) on its side wall. The upper end of the first extended bending arm (417) is connected to the side wall of the support plate (402), and the lower end of the first extended bending arm (417) is connected to the driving end of the second driving cylinder (414).

8. The multi-directional adjustment device for a coating die head according to claim 7, characterized in that: The multi-directional adjustment mechanism (4) also includes a third drive cylinder (418) and a second extended bending arm (419) connected to the support plate (402). The drive end of the third drive cylinder (418) is connected to the second extended bending arm (419) and can drive the lower mold (31) to move in the vertical direction.

9. The multi-directional adjustment device for a coating die head according to claim 1, characterized in that: The upper mold (30) is provided with several mechanical micrometer (302) partition controllers (33) along its length direction. Each partition controller (33) can independently adjust the paint flow rate of the corresponding partition discharge lip (300) to achieve local precise control of coating density. The controller (33) includes a support (301) set at the upper end of the upper mold (30). The support (301) is equipped with a micrometer (302). The lower end of the micrometer (302) is equipped with a T-block (303). The T-block (303) and the gasket (32) are adapted to control the coating slit height.

10. A multi-directional adjustment device for a coating die head according to claim 7, characterized in that: A third extended curved arm (420) is provided on the side wall of the support plate (402). The third extended curved arm (420) is oriented opposite to the first extended curved arm (417). The upper end of the third extended curved arm (420) is connected to the side wall of the support plate (402), and the lower end of the third extended curved arm (420) is connected to a length gauge (421).

Images