Trough adjusting mechanism

Abstract

The invention discloses a trough adjusting mechanism. The trough adjusting mechanism comprises a coating roller, a retainer plate, two striker plates and a first adjusting mechanism, and the coating roller is used for coating the base material with the slurry. The material supporting plate is arranged on one side of the coating roller, and the material supporting plate and the coating roller are arranged at a set angle so as to jointly receive slurry. The two material blocking plates are installed on the material supporting plate, and a material groove used for containing slurry is defined by the two material blocking plates and the material supporting plate. The first adjusting mechanism is connected with the retainer plate and used for driving the whole retainer plate to be close to or away from the coating roller so as to adjust the relative position between the retainer plate and the coating roller. According to the material groove adjusting mechanism, the gap between the material groove and the coating roller is rapidly adjusted through the first adjusting mechanism, and the material blocking plate is conveniently and rapidly adjusted.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coating equipment, and particularly relates to a trough adjusting mechanism for precision coating. BACKGROUND

[0002] In the coating process, the coating roller is immersed in the trough containing the specific slurry and carries excess slurry by self-rotation, passes through a comma doctor blade, the comma doctor blade accurately scrapes and trims the excess slurry of uneven thickness transmitted by the coating roller, and finally forms a coating layer with uniform thickness and smooth surface on the surface of the coating roller, and finally the coating roller adheres the coating layer with uniform thickness and smooth surface to the surface of the substrate.

[0003] In this process, the trough is a crucial unit component, and its basic function is to contain the slurry. In order to adapt to different width specifications of the substrate (i.e. to carry out "model change" production), the trough is usually provided with adjustable baffle plates on both sides. The function of these baffle plates is to limit the width of the slurry in the transverse direction of the coating roller, prevent the slurry from leaking from both sides of the substrate, so as to ensure that the slurry is effectively used in the target coating area, and keep the production environment clean.

[0004] However, the conventional trough structure needs to be disassembled to replace the position of the baffle plate when the model is changed, which is not convenient for model change and adjustment of the trough, and causes the phenomenon of slurry leakage to occur from time to time. SUMMARY

[0005] To solve the technical problems existing in the prior art, the present application provides a trough adjusting mechanism which is convenient for adjusting the trough during model change.

[0006] To achieve the above-mentioned purpose, the trough adjusting mechanism of the present application comprises: a coating roller for coating the slurry on the substrate; a supporting plate arranged on one side of the coating roller and arranged at a set angle with the coating roller to jointly receive the slurry; two baffle plates installed on the supporting plate and jointly surrounding the trough for containing the slurry with the supporting plate; a first adjusting mechanism connected with the supporting plate for driving the whole supporting plate to approach or move away from the coating roller to adjust the relative position between the supporting plate and the coating roller.

[0007] In an embodiment of the trough adjusting mechanism of the present application, the two baffle plates are slidably installed on the supporting plate along the axial direction of the coating roller; the supporting plate is provided with a second adjusting mechanism at each end along the axial direction of the coating roller, each second adjusting mechanism is connected with a corresponding baffle plate for driving the baffle plate to independently move along the axial direction of the coating roller to adjust the distance between the two baffle plates.

[0008] In one embodiment of the trough adjusting mechanism, the first adjusting mechanism is provided in two groups, each group being located on the two sides of the coating roller in the axial direction; each group of the first adjusting mechanism is connected to the end of the material supporting plate through a fixed plate.

[0009] In one embodiment of the trough adjusting mechanism, the first adjusting mechanism comprises a sliding rail mounting block, a first sliding rail, an adjusting rod fixing seat and a first adjusting rod; the sliding rail mounting block is fixedly arranged, the fixed plate is slidingly mounted on the sliding rail mounting block through the first sliding rail, the adjusting rod fixing seat is fixedly mounted on the sliding rail mounting block, and the first adjusting rod is threadedly connected to the adjusting rod fixing seat, with its end being connected to the fixed plate; the fixed plate is moved along the first sliding rail by rotating the first adjusting rod.

[0010] In one embodiment of the trough adjusting mechanism, the surface of the material supporting plate away from the coating roller is provided with a second sliding rail extending in the axial direction of the coating roller; the material blocking plate is slidingly mounted on the second sliding rail through a connecting assembly; and the second adjusting mechanism is slidingly mounted on the second sliding rail through a connecting block.

[0011] In one embodiment of the trough adjusting mechanism, the connecting assembly comprises a sliding plate, a first connecting plate and a second connecting plate; the sliding plate is slidingly connected to the second sliding rail, the first connecting plate is connected between the sliding plate and the second connecting plate, and the material blocking plate is mounted on the second connecting plate; wherein the second connecting plate and the first connecting plate are connected through a first jackscrew to drive the material blocking plate to be finely adjusted in a direction parallel to the material supporting plate, and the material blocking plate and the second connecting plate are connected through a second jackscrew to drive the material blocking plate to be finely adjusted in a direction perpendicular to the material supporting plate.

[0012] In one embodiment of the trough adjusting mechanism, the second adjusting mechanism comprises an adjusting seat and a second adjusting rod; the adjusting seat is fixedly mounted on the connecting block; and the second adjusting rod is threadedly connected to the adjusting seat, with its end being abutted against the material blocking plate; the material blocking plate is moved along the second sliding rail by rotating the second adjusting rod.

[0013] In one embodiment of the trough adjusting mechanism, the surface of the material blocking plate opposite to the second adjusting rod is provided with a limiting plate.

[0014] In one embodiment of the trough adjusting mechanism, a comma doctor blade is further arranged above the coating roller; a gap for scraping the slurry on the substrate is formed between the comma doctor blade and the outer circumferential surface of the coating roller.

[0015] In one embodiment of the trough adjusting mechanism of the present application, one side of the material blocking plate facing the coating roller is provided with a first arc-shaped surface matching the outer peripheral surface of the coating roller; and the other side of the material blocking plate facing the comma doctor blade is provided with a second arc-shaped surface matching the profile of the comma doctor blade.

[0016] In summary, the trough adjusting mechanism of the present application realizes the quick adjustment of the gap between the trough and the coating roller through the first adjusting mechanism, and facilitates the quick adjustment of the material blocking plate. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural diagram of one embodiment of the present application;

[0018] Figure 2 is a structural diagram of the coating roller and the comma doctor blade;

[0019] Figure 3 is Figure 2 is a structural diagram from another angle;

[0020] In the drawings: A, first direction; B, second direction; C, third direction; 100, coating roller; 200, base material; 300, material supporting plate; 310, second sliding rail; 400, material blocking plate; 410, connecting assembly; 411, sliding plate; 412, first connecting plate; 413, second connecting plate; 413a, first plate surface; 413b, second plate surface; 414, first jackscrew; 415, second jackscrew; 420, limiting plate; 430, first arc-shaped surface; 440, second arc-shaped surface; 500, comma doctor blade; 600, first adjusting mechanism; 610, sliding rail mounting block; 620, first sliding rail; 630, adjusting rod fixing seat; 640, first adjusting rod; 650, fixing plate; 700, second adjusting mechanism; 710, connecting block; 720, adjusting seat; 730, second adjusting rod. DETAILED DESCRIPTION

[0021] The present application will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present application and implement it, but the embodiments are not limiting to the present application.

[0022] In the precise coating process of lithium battery electrodes, the coating method of the cooperation of the comma doctor blade and the coating roller has very high requirements for the stability of slurry supply. The material blocking plate of the traditional trough is directly fixed by bolts, and needs to be disassembled and manually reassembled when changing and adjusting. This method has the problems of poor positioning accuracy, low repeatability, easy slurry side leakage, and complicated operation, which seriously affects the production efficiency and the consistency of coating quality. The present application aims to provide a trough adjusting mechanism with accurate adjustment, good sealing, and convenient operation.

[0023] As Figure 1As shown, the coating roller 100 is used to coat the slurry on the substrate 200. The material supporting plate 300 is arranged on one side (lower side) of the coating roller 100, and the working surface of the material supporting plate 300 forms an acute angle (set angle) with the tangent of the coating roller 100, and a slurry accumulation area is formed between the two. Two material blocking plates 400 are installed on the material supporting plate 300, and the material supporting plate 300 and the two material blocking plates 400 together form a material groove for accommodating the slurry. The substrate 200 is pulled and conveyed by a conveying roller, and the coating roller 100 is arranged opposite to the conveying roller, and the coating roller 100 rotates to adhere the slurry to the surface thereof. The comma doctor blade 500 is arranged above the coating roller 100, and a gap is formed between the two, and the comma doctor blade 500 is used to accurately remove the excess slurry on the surface of the coating roller 100, and the coating roller 100 adheres the appropriate amount of slurry on the surface to form a coating layer on the substrate 200, which has uniform thickness and smooth surface.

[0024] The material supporting plate 300 is connected to the first adjusting mechanism 600, and the first adjusting mechanism 600 is used to drive the whole material supporting plate 300 to move close to or away from the coating roller 100, so as to adjust the relative position between the material supporting plate 300 and the coating roller 100. When the coating of the substrate 200 with different widths needs to replace the material blocking plate 400, the distance between the material groove and the coating roller 100 is adjusted conveniently and quickly, so as to replace the material blocking plate 400 or adjust the material blocking plate 400.

[0025] As shown in the drawings, Figure 2 The first adjusting mechanism 600 has two groups, which are arranged at the two ends of the material supporting plate 300 in the axial direction of the coating roller 100. Each group of the first adjusting mechanism 600 includes a fixedly arranged slide rail mounting block 610, a first slide rail 620, an adjusting rod fixed seat 630 and a first adjusting rod 640. A fixed plate 650 is slidably mounted on the slide rail mounting block 610 through the first slide rail 620, and the end of the material supporting plate 300 is fixedly connected to the fixed plate 650. The first adjusting rod 640 (such as a precision threaded rod) is threadedly connected in the adjusting rod fixed seat 630, and the end thereof is connected to the fixed plate 650. By rotating the first adjusting rod 640, the fixed plate 650 can be accurately moved along the first slide rail 620, so as to drive the whole material supporting plate 300 to move close to or away from the coating roller 100. This adjustment is used to set the basic gap of the slurry accumulation area, and is a step of coarse adjustment and quick replacement.

[0026] As shown in the drawings, Figure 2 , Figure 3 A rectangular coordinate system is established based on the plate surface of the material supporting plate 300, the direction parallel to the plate surface of the material supporting plate 300 and the axial direction of the coating roller 100 is set as the first direction A, the direction perpendicular to the plate surface of the material supporting plate 300 is set as the second direction B, and the direction perpendicular to the first direction A and the second direction B is set as the third direction C.

[0027] Two material blocking plates 400 are used to define the width of the slurry in the axial direction (first direction A) of the coating roller 100. The surface of the material supporting plate 300 facing away from the coating roller 100 is provided with a second sliding rail 310 extending in the first direction A. Each material blocking plate 400 is slidingly mounted on the second sliding rail 310 by a connecting assembly 410. The connecting assembly 410 sets the sliding structure of the material blocking plate 400 on the surface of the material supporting plate 300 facing away from the slurry accumulation area.

[0028] A second adjusting mechanism 700 is also slidingly mounted on the second sliding rail 310 by a connecting block 710 and is associated with the material blocking plate 400. The connecting block 710 is a U-shaped plate inserted in the material supporting plate 300, with one side inner surface slidingly connected to the second sliding rail 310 and the other side inner surface connected to the material supporting plate 300 at the interface, setting the sliding structure of the second adjusting mechanism 700 on the surface of the material supporting plate 300 facing away from the slurry accumulation area. The second adjusting mechanism 700 can slide a large range along the second sliding rail and can drive the material blocking plate 400 to slide, and is locked by a screw penetrating through the connecting block 710 on one side of the surface of the material supporting plate 300 facing away from the slurry accumulation area.

[0029] The second adjusting mechanism 700 can fine-tune the position of the material blocking plate 400 in the first direction A based on itself. The second adjusting mechanism 700 includes an adjusting seat 720 fixed on the connecting block 710 and a second adjusting rod 730 penetrating through it. Rotating the second adjusting rod 730, the end thereof can push the material blocking plate 400 and the connecting assembly 410 as a whole to slide along the second sliding rail 310. By independently operating the second adjusting rod 730 at both ends, the spacing between the two material blocking plates 400 can be accurately and independently adjusted to adapt to different widths of the base material 200.

[0030] The connecting assembly 410 is the key to realizing the sealing of the material blocking plate 400 and the material supporting plate 300. The connecting assembly 410 is also a U-shaped plate as a whole, setting the sliding structure of the material blocking plate 400 on the surface of the material supporting plate 300 facing away from the slurry accumulation area. The connecting assembly 410 includes a sliding plate 411, a first connecting plate 412, and a second connecting plate 413. The sliding plate 411 is clamped on the second sliding rail 310 and can slide along it. The end of the sliding plate 411 away from the coating roller 100 extends out of the material supporting plate 300, and the first connecting plate 412 is vertically and fixedly installed on the extended end.

[0031] The second connecting plate 413 is L-shaped, having a first plate surface 413a and a second plate surface 413b perpendicular to each other. The material blocking plate 400 is mounted on the second plate surface 413b of the second connecting plate 413 by means of bolts or other fasteners. The first plate surface 413a of the second connecting plate 413 is connected to the first connecting plate 412 by means of a first jackscrew 414. The first jackscrew 414 is arranged along the third direction C. By rotating the first jackscrew 414, the second connecting plate 413 and the material blocking plate 400 can be pushed to produce a micron-level displacement along this direction. This fine adjustment is used to ensure that the side surface of the material blocking plate 400 is optimally fitted with the edge of the running base material 200 or the end surface of the coating roller.

[0032] A second jackscrew 415 is also arranged through the second plate surface 413b of the second connecting plate 413. The second jackscrew 415 is arranged along the second direction B. By tightening the second jackscrew 415, the end thereof can firmly press the material blocking plate 400 against the side surface of the material holding plate 300, ensuring that the material blocking plate 400 forms a stable lateral seal.

[0033] After the material blocking plate 400 is finely adjusted along the first direction A, the sliding plate 411 is locked by means of a screw passing through the sliding plate 411 on the side of the material holding plate 300 away from the slurry accumulation area.

[0034] The surface of the material blocking plate 400 opposite to the second adjusting rod 730 is provided with a limiting plate 420 for connecting the end of the second adjusting rod 730.

[0035] The working end of the material blocking plate 400 is specially shaped to adapt to the dynamic contact environment: the side thereof facing the coating roller 100 is processed with a first curved surface 430, which matches the curvature of the outer surface of the coating roller 100, and the gap can be adjusted to be extremely small; the side thereof facing the comma doctor blade 500 is processed with a second curved surface 440, which adapts to the profile of the blade head of the comma doctor blade 500. This design enables the material blocking plate 400 to closely fit the coating roller 100 and the comma doctor blade 500, blocking the slurry leakage path.

[0036] To improve the intuitiveness of operation, a ruler with precise scale is added beside the second sliding rail 310, and a pointer is arranged on the connecting block 710 or the sliding plate 411. When the second adjusting mechanism 700 is operated, the actual distance between the two material blocking plates 400 can be directly read, realizing visual and digital adjustment with higher precision and efficiency.

[0037] The first adjusting rod 640 and the second adjusting rod 730 are replaced by electric push rods driven by servo motors. All adjusting actions can be completed by inputting numerical values through the control panel, and closed-loop feedback control can be realized through position sensors. This lays a foundation for realizing full-automatic conversion and integration with the MES system of the production line.

[0038] Specific adjustment process: The first adjusting rod 640 on both sides is rotated to move the whole material supporting plate 300 away from the coating roller 100, so as to avoid the limited operation space.

[0039] Coarse positioning of the material blocking plate 400: according to the width of the new substrate 200, the locking screw and the second top screw connecting the block 710 and the sliding plate 411 are loosened, the material blocking plate 400, the connecting assembly 410 and the second adjusting mechanism 700 are moved along the second sliding rail 310 to the approximate width position, and then the block 710 and the sliding plate 411 are locked.

[0040] Fine positioning of the material blocking plate 400: the two second adjusting rods 730 are rotated at the same time to drive the two material blocking plates 400 to be finely positioned along the second sliding rail 310, and after fine positioning, the second top screw 415 on each material blocking plate 400 is tightened to firmly press the material blocking plate 400 on the material supporting plate 300.

[0041] Resetting of the material slot: the first adjusting rod 640 on both sides is rotated to move the whole material supporting plate 300 close to the coating roller 100.

[0042] Fine positioning of the material blocking plate 400: the fit of the material blocking plate 400 with the coating roller 100 and the comma doctor blade 500 is observed. If there is a local gap, the first top screw 414 is slightly rotated to make the material blocking plate 400 produce a third direction C fine movement, until the first arc surface 430 and the second arc surface 440 of the material blocking plate 400 are uniformly fitted with the coating roller 100 and the comma doctor blade 500.

[0043] The above only describes some or preferred embodiments of the present application, neither the text nor the drawings can limit the scope of protection of the present application, any equivalent structural transformation using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the scope of protection of the present application.

Claims

1. A material trough adjustment mechanism, characterized in that, include: Coating rollers are used to coat slurry onto a substrate. A material support plate is disposed on one side of the coating roller and arranged at a set angle to the coating roller to jointly receive the slurry; Two baffles are installed on the material support plate and together with the material support plate form a trough for holding slurry; The first adjustment mechanism, connected to the material support plate, is used to drive the material support plate as a whole to move closer to or further away from the coating roller, so as to adjust the relative position between the material support plate and the coating roller.

2. The feed trough adjustment mechanism as described in claim 1, characterized in that, Two baffles are slidably mounted on the support plate along the axial direction of the coating roller; a second adjustment mechanism is provided at each end of the support plate along the axial direction of the coating roller, and each second adjustment mechanism is connected to a corresponding baffle, for driving the baffle to move independently along the axial direction of the coating roller to adjust the distance between the two baffles.

3. The feed trough adjustment mechanism as described in claim 1, characterized in that, The first adjustment mechanism is provided in two sets, and the two sets of the first adjustment mechanism are respectively located on both sides of the axial direction of the coating roller; each set of the first adjustment mechanism is connected to the end of the material support plate through a fixing plate.

4. The feed trough adjustment mechanism as described in claim 3, characterized in that, The first adjustment mechanism includes a slide rail mounting block, a first slide rail, an adjustment rod fixing seat, and a first adjustment rod. The slide rail mounting block is fixedly installed, and the fixing plate is slidably installed on the slide rail mounting block via the first slide rail. The adjustment rod fixing seat is fixedly installed on the slide rail mounting block, and the first adjustment rod is threadedly connected to the adjustment rod fixing seat, with its end connected to the fixing plate. By rotating the first adjustment rod, the fixing plate is pushed to move along the first slide rail.

5. The feed trough adjustment mechanism as described in claim 2, characterized in that, The material support plate is provided with a second slide rail extending along the axial direction of the coating roller on the side surface opposite to the coating roller; the baffle plate is slidably mounted on the second slide rail via a connecting assembly; the second adjustment mechanism is slidably mounted on the second slide rail via a connecting block.

6. The feed trough adjustment mechanism as described in claim 5, characterized in that, The connecting assembly includes a sliding plate, a first connecting plate, and a second connecting plate; the sliding plate is slidably connected to the second slide rail, the first connecting plate is connected between the sliding plate and the second connecting plate, and the baffle plate is installed on the second connecting plate; wherein, the second connecting plate and the first connecting plate are connected by a first set screw to drive the baffle plate to make fine adjustments in a direction parallel to the material support plate, and the baffle plate and the second connecting plate are connected by a second set screw to drive the baffle plate to make fine adjustments in a direction perpendicular to the material support plate.

7. The feed trough adjustment mechanism as described in claim 5, characterized in that, The second adjustment mechanism includes an adjustment seat and a second adjustment rod; the adjustment seat is fixedly installed on the connecting block; the second adjustment rod is threaded to the adjustment seat, and its end abuts against the baffle plate. By rotating the second adjustment rod, the baffle plate is pushed to move along the second slide rail.

8. The feed trough adjustment mechanism as described in claim 7, characterized in that, A limit plate is provided on the surface of the baffle plate opposite to the second adjusting rod.

9. The feed trough adjusting mechanism as described in any one of claims 1 to 8, characterized in that, It also includes a comma-shaped scraper disposed above the coating roller, the comma-shaped scraper forming a slit with the outer peripheral surface of the coating roller for scraping the slurry off the substrate.

10. The feed trough adjustment mechanism as described in claim 9, characterized in that, The baffle plate has a first arc-shaped surface on the side facing the coating roller that matches the outer circumferential surface of the coating roller; the baffle plate has a second arc-shaped surface on the side facing the comma scraper that matches the contour of the comma scraper.

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