Coating die head cleaning device and coating equipment

Abstract

The invention relates to a coating die head cleaning device and coating equipment. The coating die head cleaning device comprises a moving mechanism and a wiping head installed at the moving end of the moving mechanism. When the coating die head needs to be cleaned, the wiping head is driven by the moving mechanism to obtain the wiping sheet material, and then the obtained wiping sheet material is adsorbed into the adsorption groove through the first adsorption hole. And the wiping sheet material in the adsorption groove can be bent along the inner wall of the adsorption groove, so that the wiping sheet material is bent into a U shape. And then, the coating die head is clamped into the adsorption groove, and the wiping sheet material which is bent to be U-shaped can better wrap the lip of the coating die head. When the moving mechanism drives the wiping head to move in the extending direction of the coating die head, the wiping sheet material can wipe all areas of the lip of the coating die head. Therefore, the coating die head cleaning device can achieve automatic cleaning of the coating die head, and manual wiping is not needed.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production and processing, and in particular to a coating die cleaning device and coating equipment. Background Art

[0002] In the production process of lithium battery pole pieces, coating equipment is required to coat the active material slurry on the surface of the substrate. The lip of the coating die will have residual slurry during the coating process, so it needs to be cleaned regularly to avoid affecting the coating effect. At present, the lip of the coating die is generally cleaned by manual wiping. However, manual wiping has the risk of pinching hands, and the material is corrosive, so there is a great safety hazard. Summary of the invention

[0003] Based on this, it is necessary to provide a coating die cleaning device and coating equipment that automatically clean the coating die in order to solve the above problems.

[0004] On the one hand, the present application provides a coating die cleaning device, which can be arranged on one side of the coating die, and the coating die cleaning device comprises:

[0005] Mobile mechanism; and

[0006] A wiping head mounted on the moving end of the moving mechanism, the wiping head having an adsorption groove penetrating the wiping head, the inner wall of the adsorption groove being provided with a first adsorption hole, so that the adsorption groove can absorb the wiping sheet and bend the wiping sheet along the inner wall of the adsorption groove;

[0007] The adsorption groove allows the coating die head to be inserted, and the moving mechanism can drive the wiping head to move along the extension direction of the coating die head.

[0008] In one of the embodiments, the wiping head forms two supporting planes parallel to each other on both sides of the adsorption groove in the width direction, and each of the supporting planes is provided with a second adsorption hole so that the supporting plane can absorb the wiping sheet.

[0009] In one embodiment, a first negative pressure chamber and a second negative pressure chamber isolated from each other are formed inside the wiping head, the first negative pressure chamber is connected to the first adsorption hole, and the second negative pressure chamber is connected to the second adsorption hole.

[0010] In one of the embodiments, the wiping head is provided with guiding inclined surfaces connecting the supporting plane and the side walls of the adsorption groove on both sides in the width direction of the adsorption groove, and each of the guiding inclined surfaces is provided with a third adsorption hole connected to the first negative pressure chamber.

[0011] In one embodiment, the distribution density of the first adsorption holes on the inner wall of the adsorption groove is less than the distribution density of the third adsorption holes on the guide slope.

[0012] In one of the embodiments, a sinking step is formed at at least one end of the bottom wall of the adsorption groove in the length direction, and the first adsorption holes are distributed outside the range of the sinking step.

[0013] In one of the embodiments, a feeding mechanism is further included. The wiping head can pass through the feeding mechanism under the drive of the moving mechanism, and the feeding mechanism can provide wiping sheets to the wiping head.

[0014] In one embodiment, the feeding mechanism comprises:

[0015] A material box, having a material bin for accommodating wiping sheet materials, a material outlet communicating with the material bin is provided on a side of the material box facing the wiping head, and a material stopper is provided at an edge of the material outlet; and

[0016] The elastic material pushing component provides an elastic force pointing to the material outlet for the wiping sheet material contained in the material bin, so as to hold the wiping sheet material against the material blocking portion.

[0017] In one of the embodiments, a hot pressing mechanism is further included, which includes a hot pressing head. The wiping head can pass through the hot pressing mechanism under the drive of the moving mechanism, and the hot pressing head can extend into the adsorption groove and squeeze the wiping sheet adsorbed by the wiping head until it fits with the inner wall of the adsorption groove.

[0018] In one of the embodiments, a spraying mechanism is further included. The wiping head can pass through the spraying mechanism under the drive of the moving mechanism, and the spraying mechanism can spray cleaning liquid into the adsorption tank.

[0019] In one of the embodiments, it also includes a clamping mechanism and a waste box. The wiping head can pass through the clamping mechanism under the drive of the moving mechanism. The clamping mechanism can clamp the wiping sheet adsorbed on the adsorption groove. The waste box is located below the clamping mechanism and can receive the wiping sheet released by the clamping mechanism.

[0020] On the other hand, the present application also provides a coating device, including a coating die and a coating die cleaning device as described in any one of the above preferred embodiments.

[0021] Compared with the prior art, the coating die cleaning device and coating equipment have the following beneficial effects:

[0022] When the coating die needs to be cleaned, the above-mentioned coating die cleaning device and coating equipment firstly drive the wiping head to obtain the wiping sheet by the moving mechanism, and then adsorb the obtained wiping sheet into the adsorption groove through the first adsorption hole. The wiping sheet in the adsorption groove can be bent along the inner wall of the adsorption groove, so as to be bent into a U shape. Then, the coating die is inserted into the adsorption groove, and the wiping sheet bent into a U shape can better cover the lip of the coating die. As the moving mechanism drives the wiping head to move along the extension direction of the coating die, the wiping sheet can wipe all areas of the lip of the coating die. It can be seen that the above-mentioned coating die cleaning device can realize automatic cleaning of the coating die without manual wiping. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of a portion of the structure of a coating device in one embodiment of the present invention;

[0025] Figure 2 It is a schematic structural diagram of a coating die cleaning device in one embodiment of the present invention;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure of a wiping head in a coating die cleaning device is shown;

[0027] Figure 4 for Figure 3 A schematic diagram of the wiping head shown in one of the use states;

[0028] Figure 5 for Figure 3 A schematic diagram of the wiping head shown in another use state;

[0029] Figure 6 for Figure 3 a cross-sectional view of the wiper head shown;

[0030] Figure 7 for Figure 2 The schematic diagram of the structure of the feeding mechanism in the coating die cleaning device is shown. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0037] See also Figure 1 The present invention provides a coating device 10 and a coating die cleaning device 100. The coating device 10 includes a coating die cleaning device 100 and a coating die 200.

[0038] The coating die 200 is generally in the shape of a long strip, and is composed of an upper die and a lower die. The protruding positions of the upper die and the lower die form a lip, and the slurry is sprayed onto the surface of the substrate through the lip during the coating process. Obviously, in order to smoothly achieve coating, the above-mentioned coating device 10 generally also includes a slurry storage device, a slurry conveying device, and a roller assembly for conveying the substrate, etc., but they are not the focus of this application, so they will not be expanded on.

[0039] The coating die cleaning device 100 is disposed on one side of the coating die 200, and can wipe and clean the lip of the coating die 200. After a long period of coating, the lip of the coating die 200 is prone to dry or adhere to the slurry, which may affect the normal coating of the slurry. The coating die cleaning device 100 can regularly clean the coating die 200, thereby ensuring that the coating device 10 still maintains a high reliability during continuous operation.

[0040] Please also read Figure 2 In one embodiment of the present invention, a coating die cleaning device 100 includes a moving mechanism 110 and a wiping head 120 .

[0041] The moving mechanism 110 has a moving end, and the wiping head 120 is installed at the moving end of the moving mechanism 110. Driven by the moving mechanism 110, the wiping head 120 can absorb the wiping sheet 20 and hold the absorbed wiping sheet 20 against the lip of the coating die 200. The wiping sheet 20 can be dust-free paper, non-woven fabric, etc. Moreover, the moving mechanism 110 can also drive the wiping head 120 to move along the extension direction of the coating die 200, so that the absorbed wiping sheet 20 wipes the lip of the coating die 200.

[0042] Specifically in this embodiment, the moving mechanism 110 includes a first moving component 111 and a second moving component 112. The second moving component 112 is installed at the moving end of the first moving component 111, and the wiping head 120 is installed at the moving end of the second moving component 112. The first moving component 111 can drive the second moving component 112 to move along a first direction, and the second moving component 112 can drive the wiping head 120 to move along a second direction perpendicular to the first direction.

[0043] Under the joint action of the first moving component 111 and the second moving component 112, the wiping head 120 can move in two mutually perpendicular dimensions, and its moving range is relatively large, so it is convenient to obtain the wiping sheet 20 and smoothly wipe the coating die 200. More specifically, the extension direction of the coating die 200 can be consistent with the second direction, so the lip of the coating die 200 can be wiped when the second moving component 112 drives the wiping head 120 to move along the second direction. By driving the second moving component 112 to move along the first direction by the first moving component 111, the wiping head 120 can be driven to move closer to or away from the coating die 200.

[0044] The first moving assembly 111 and the second moving assembly 112 can both be driven by a structure in which a motor and a lead screw are matched. Specifically, the first moving assembly 111 can be provided with a bracket, a slide rail, and a slider slidably mounted on the slide rail along a first direction, and the lead screw is threadedly connected to the slider and is transmission-connected to the motor. The second moving assembly 112 can be provided with a support plate extending along a second direction, and the support plate is also provided with components such as a slide rail, a slider, a lead screw, and a motor.

[0045] Please also read Figure 3 The wiping head 120 has an adsorption groove 121, which penetrates the wiping head 120 and allows the coating die 200 to be inserted. Specifically, the inner contour of the adsorption groove 121 matches well with the shape of the lip of the coating die 200, and can be a contour setting of the coating die 200. The coating die 200 is inserted into the adsorption groove 121 by driving the wiping head 120 toward the coating die 200; the coating die 200 is also inserted into the adsorption groove 121 by driving the coating die 200 toward the wiping head 120.

[0046] Specifically in this embodiment, the coating die head 200 is located on one side of the wiping head 120 along the second direction. The moving mechanism 110 drives the wiping head 120 to move along the second direction, so that the wiping head 120 can be close to the coating die head 200 until the coating die head 200 is stuck in the adsorption tank 121.

[0047] Furthermore, the inner wall of the adsorption groove 121 is provided with a first adsorption hole 101, so that the adsorption groove 121 can absorb the wiping sheet 20 and bend the wiping sheet 20 along the inner wall of the adsorption groove 121. The first adsorption hole 101 can be connected to the negative pressure cavity, so that negative pressure is formed on the inner wall of the adsorption groove 121. The inner wall of the adsorption groove 121 includes two opposite side walls and a bottom wall connecting the two side walls, so the inner wall of the adsorption groove 121 is roughly U-shaped.

[0048] The wiping sheet 20 adsorbed on the inner wall of the adsorption groove 121 is in contact with the inner wall of the adsorption groove 121, and is bent into a U shape along the inner wall of the adsorption groove 121. When the coating die 200 needs to be cleaned, the moving mechanism 110 first drives the wiping head 120 to obtain the wiping sheet, and then the obtained wiping sheet is adsorbed into the adsorption groove 121 through the first adsorption hole 101. Then, the moving mechanism 110 drives the wiping head 120 to approach the coating die 200 until the coating die 200 is inserted into the adsorption groove 121, and the wiping sheet 20 bent into a U shape can better cover the lip of the coating die 200. The moving mechanism 110 then drives the wiping head 120 to move along the extension direction of the coating die 200, and the wiping sheet 20 can wipe the lip of the coating die 200.

[0049] After wiping is completed, the used wiping sheet 20 is taken out from the adsorption tank 121, and the wiping head 120 re-absorbs a new wiping sheet 20, and the above process is repeated to wipe the lip of the coating die 200 for the next time. Therefore, the coating die cleaning device 100 can automatically clean the coating die 200 regularly.

[0050] Specifically, in this embodiment, at least one end of the bottom wall of the adsorption tank 121 in the length direction is formed with a sinking step 1211, and the first adsorption holes 101 are distributed outside the range of the sinking step 1211. In this way, when the wiping sheet 20 is adsorbed on the inner wall of the adsorption tank 121, the portion of the wiping sheet 20 corresponding to the sinking step 1211 will be suspended. In this way, after the wiping sheet 20 finishes wiping the coating die 200, its suspended portion is convenient to be clamped, thereby facilitating the rapid replacement of the wiping sheet 20.

[0051] In this embodiment, the wiping head 120 is formed with two parallel supporting planes 122 on both sides of the adsorption groove 121 in the width direction, and each supporting plane 122 is provided with a second adsorption hole 102 so that the supporting plane 122 can absorb the wiping sheet 20 .

[0052] The second adsorption hole 102 can be connected to the negative pressure chamber, and can form a negative pressure on the support plane 122 to adsorb the wiping sheet 20. Figure 4As shown, since the two supporting planes 122 are located outside the adsorption groove 121 and are parallel to each other, the wiping sheet 20 can be well contacted and adhered to the wiping sheet 20 when the wiping head 120 absorbs the wiping sheet 20, thereby smoothly acquiring the wiping sheet 20 and avoiding the failure of absorbing the wiping sheet 20 due to the inability to establish a vacuum due to the large gap between the adsorption groove 121 and the wiping sheet 20.

[0053] It should be pointed out that in other embodiments, the vacuum power can be increased to smoothly establish a vacuum between the adsorption groove 121 and the wiping sheet 20 , thereby achieving suction of the wiping sheet 20 without providing a supporting plane 122 .

[0054] Please also read Figure 6 In this embodiment, a first negative pressure chamber 104 and a second negative pressure chamber 105 are formed inside the wiping head 120, which are isolated from each other. The first negative pressure chamber 104 is connected to the first adsorption hole 101, and the second negative pressure chamber 105 is connected to the second adsorption hole 102. It can be seen that the negative pressure states of the first negative pressure chamber 104 and the second negative pressure chamber 105 can be adjusted separately.

[0055] When sucking the wiping sheet 20, negative pressure can be first formed in the second negative pressure chamber 105, and then the support plane 122 is pressed against the wiping sheet 20 to be sucked, so that the wiping sheet 20 can be sucked by the two support planes 122. At this time, the wiping sheet 20 is not bent and does not fit the inner wall of the adsorption groove 121. Figure 4 As shown, since the first negative pressure chamber 104 and the second negative pressure chamber 105 are independent of each other, the first adsorption hole 101 will not cause the negative pressure leakage of the second negative pressure chamber 105 , and the two supporting planes 122 can reliably adsorb the wiping sheet 20 .

[0056] Next, negative pressure is formed in the first negative pressure chamber 104 and the negative pressure in the second negative pressure chamber 105 is canceled, and at the same time, the wiping sheet 20 is pressed into the adsorption groove 121, so that the wiping sheet 20 can be attached to the inner wall of the adsorption groove 121 and bent into a U shape. Figure 5 As shown. Of course, under the premise that the negative pressure of the first negative pressure chamber 104 is large enough, the wiping sheet 20 can also bend inward due to the pressure difference on both sides, and finally adhere to the inner wall of the adsorption groove 121 and bend into a U shape. By adjusting the negative pressure states of the first negative pressure chamber 104 and the second negative pressure chamber 105 respectively, the process of the wiping head 120 obtaining the wiping sheet 20 can be divided into two stages, and under the premise of ensuring smooth absorption of the wiping sheet 20, it is ensured that the absorbed wiping sheet 20 can be smoothly bent.

[0057] In addition, in this embodiment, the wiping head 120 is formed with guide slopes 123 connecting the supporting plane 122 and the side walls of the adsorption groove 121 on both sides in the width direction of the adsorption groove 121, and each guide slope 123 is provided with a third adsorption hole 103 connected to the first negative pressure chamber 104.

[0058] The two guide slopes 123 are inclined outward relative to the edge of the opening of the adsorption groove 121, and can form an outward-expanding guide section at the open end of the adsorption groove 121, so as to facilitate the coating die head 200 to be inserted into the adsorption groove 121. At the same time, the third adsorption hole 103 is connected to the first negative pressure chamber 104, so the guide slope 123 can form negative pressure and adsorb the wiping sheet 20. In this way, the bent portion of the wiping sheet 20 fits with the guide slope 123, so that it can better match the shape of the coating die head 200.

[0059] Furthermore, in this embodiment, the distribution density of the first adsorption holes 101 on the inner wall of the adsorption groove 121 is less than the distribution density of the third adsorption holes 103 on the guide slope 123. The number of the first adsorption holes 101 opened on the inner wall of the adsorption groove 121 is small, and the suction force is also small. When the cleaning liquid is subsequently sprayed into the adsorption groove 121 to wet the wiping sheet 20, it can be avoided that the first adsorption holes 101 absorb too much cleaning liquid.

[0060] Please refer again Figure 2 In this embodiment, the coating die cleaning device 100 further includes a feeding mechanism 130. The wiping head 120 can pass through the feeding mechanism 130 driven by the moving mechanism 110, and the feeding mechanism 130 can provide the wiping sheet 20 to the wiping head 120. In this way, the degree of automation of the coating die cleaning device 100 is further improved.

[0061] Specifically, the feeding mechanism 130 can be spaced apart from the coating die head 200 along the first direction, and the wiping head 120 can pass through the feeding mechanism 130 when the moving mechanism 110 drives the wiping head 120 to move along the first direction. The moving mechanism 110 can also drive the wiping head 120 to approach the feeding mechanism 130 along the second direction to smoothly obtain the wiping sheet 20 provided by the feeding mechanism 130.

[0062] For further information, please also refer to Figure 7 In this embodiment, the feeding mechanism 130 includes a material box 131 and an elastic material pushing assembly 132. The material box 131 has a material bin 1311 for accommodating the wiping sheet material 20. A material outlet 1312 connected to the material bin 1311 is provided on one side of the material box 131 facing the wiping head 120, and a material stopper 1313 is provided at the edge of the material outlet 1312. The material stopper 1313 can be a protruding structure extending into the range of the material outlet 1312, which can prevent the wiping sheet material 20 from scattering outward from the material outlet 1312 in a natural state.

[0063] The elastic pusher assembly 132 provides an elastic force pointing to the discharge port 1312 for the wiping sheets 20 contained in the material bin 1311, so as to hold the wiping sheets 20 against the material stopper 1313. A plurality of wiping sheets 20 are stacked and contained in the material bin 1311, and clamped between the elastic pusher assembly 132 and the material stopper 1313. When the wiping head 120 absorbs the wiping sheets 20, the wiping head 120 firstly contacts and absorbs the outermost wiping sheets 20 through the discharge port 1312, and then moves away from the discharge port 1312 under the drive of the moving mechanism 110, so as to pull the absorbed wiping sheets 20 to squeeze through the material stopper 1313 and be taken out from the discharge port 1312.

[0064] After the previous wiping sheet 20 is taken away, the subsequent wiping sheet 20 will be replaced forward under the action of the elastic pusher assembly 132, thereby ensuring that the wiping head 120 obtains the same position of the wiping sheet 20 each time. Similarly, until the last wiping sheet 20 is taken away, it is necessary to add new wiping sheets 20 to the bin 1311.

[0065] Specifically, the elastic pusher assembly 132 includes a guide rod 1321 penetrating the side wall of the material box 131, a pressure plate 1322 connected to one end of the guide rod 1321 and located in the material bin 1311, and a spring 1323 sleeved on the guide rod 1321. The pressure plate 1322 is used to abut against the wiping sheet 20, and the spring 1323 provides an elastic force acting on the wiping sheet 20. Obviously, in other embodiments, the elastic pusher assembly 132 can also be replaced by a structure that can undergo elastic deformation, such as a spring sheet.

[0066] Please refer again Figure 2 In this embodiment, the coating die cleaning device 100 also includes a hot pressing mechanism 140, and the hot pressing mechanism 140 includes a hot pressing head 141. The wiping head 120 can pass through the hot pressing mechanism 140 under the drive of the moving mechanism 110, and the hot pressing head 141 can extend into the adsorption groove 121 and squeeze the wiping sheet 20 adsorbed by the wiping head 120 until it fits with the inner wall of the adsorption groove 121.

[0067] The contour of the hot pressing head 141 matches the contour of the adsorption groove 12. After the wiping head 120 absorbs the wiping sheet 20, it can pass through the hot pressing mechanism 140 driven by the moving mechanism 110. The hot pressing head extends into the adsorption groove 121 and squeezes the wiping head 120, so that the wiping sheet 20 can be shaped so that the wiping sheet 20 can better fit the inner wall of the adsorption groove 121 to avoid the wiping sheet 20 from rebounding.

[0068] Specifically, the hot pressing mechanism 140 can be arranged with a spacing from the coating die head 200 along the first direction. More specifically, the hot pressing mechanism 140 is arranged between the coating die head 200 and the feeding mechanism 130. After the wiping head 120 obtains the wiping sheet 20, the moving mechanism 110 drives the wiping head 120 to move along the first direction so that the wiping head 120 passes through the hot pressing mechanism 140. The moving mechanism 110 can also drive the wiping head 120 to approach the hot pressing mechanism 140 along the second direction, so that the hot pressing head 141 extends into the adsorption tank 121.

[0069] In this embodiment, the coating die cleaning device 100 further includes a spraying mechanism 150 . The wiping head 120 can pass through the spraying mechanism 150 driven by the moving mechanism 110 . The spraying mechanism 150 can spray the cleaning liquid into the adsorption tank 121 .

[0070] The above-mentioned cleaning liquid can be liquids such as clean water and alcohol. By spraying the cleaning liquid into the adsorption tank 121, the wiping sheet 20 can be wetted, thereby improving the cleaning effect on the coating die 200. Specifically, the spraying mechanism 150 can be spaced apart from the coating die 200 along the first direction. More specifically, the spraying mechanism 150 is arranged between the coating die 200 and the hot pressing mechanism 140. After the hot pressing mechanism 140 completes the shaping of the wiping sheet 20, the moving mechanism 110 drives the wiping head 120 to move along the first direction, so that the wiping head 120 can pass through the spraying mechanism 150. The spraying mechanism 150 generally includes a nozzle, and the nozzle is arranged toward the opening of the adsorption tank 121, so that the cleaning liquid can be sprayed into the adsorption tank 121.

[0071] In this embodiment, the coating die cleaning device 100 also includes a clamping mechanism 160 and a waste box 170. The wiping head 120 can pass through the clamping mechanism 160 under the drive of the moving mechanism 110. The clamping mechanism 160 can clamp the wiping sheet 20 adsorbed on the adsorption groove 121. The waste box 170 is located below the clamping mechanism 160 and can receive the wiping sheet 20 released by the clamping mechanism 160.

[0072] After the wiping head 120 finishes wiping the coating die 200, the wiping head 120 can pass through the clamping mechanism 160 driven by the moving mechanism 110, and the clamping mechanism 160 can clamp the wiping sheet 20 in the adsorption tank 121. Then, the moving mechanism 110 drives the wiping head 120 away from the clamping mechanism 160, and the wiping sheet 20 can be torn off from the adsorption tank 121. The torn wiping sheet 20 is released by the clamping mechanism 160 and falls into the waste box 170, realizing the fixed-point collection of waste. Specifically, the clamping mechanism 160 can clamp the portion of the wiping sheet 20 corresponding to the sinking step 1211, that is, the portion with the edge hanging in the air.

[0073] The clamping mechanism 160 can be spaced apart from the coating die head 200 along the first direction. After the coating die head 200 is wiped, the moving mechanism 110 drives the wiping head 120 to move along the first direction so that the wiping head 120 passes through the clamping mechanism 160. More specifically, the clamping mechanism 160 in this embodiment includes a clamp 161 and a clamping cylinder 162 connected to the clamp 161. When the clamping cylinder 162 is in an extended state, the clamp 161 is in an open state; when the clamping cylinder 162 is retracted, the clamp 161 can clamp the edge of the wiping sheet 20.

[0074] When the coating die 200 needs to be cleaned, the above-mentioned coating die cleaning device 100 and coating equipment 10 first drive the wiping head 120 by the moving mechanism 110 to obtain the wiping sheet, and then adsorb the obtained wiping sheet into the adsorption groove 121 through the first adsorption hole 101. The wiping sheet in the adsorption groove 121 can be bent along the inner wall of the adsorption groove 121, so that the bending is U-shaped. Then, the coating die 200 is inserted into the adsorption groove 121, and the wiping sheet bent into a U shape can better cover the lip of the coating die 200. As the moving mechanism 110 drives the wiping head 120 to move along the extension direction of the coating die 200, the wiping sheet can complete wiping of various areas of the lip of the coating die 200. It can be seen that the above-mentioned coating die cleaning device 100 can realize automatic cleaning of the coating die 200 without manual wiping.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A coating die cleaning device, which can be arranged on one side of the coating die, characterized in that: The coating die cleaning device comprises: Mobile mechanism; and A wiping head mounted on the moving end of the moving mechanism, the wiping head having an adsorption groove penetrating the wiping head, the inner wall of the adsorption groove being provided with a first adsorption hole, so that the adsorption groove can absorb the wiping sheet and bend the wiping sheet along the inner wall of the adsorption groove; The adsorption groove allows the coating die head to be inserted, and the moving mechanism can drive the wiping head to move along the extension direction of the coating die head.

2. The coating die cleaning device according to claim 1, characterized in that: The wiping head is formed with two mutually parallel supporting planes on both sides in the width direction of the adsorption groove, and each of the supporting planes is provided with a second adsorption hole so that the supporting plane can absorb the wiping sheet.

3. The coating die cleaning device according to claim 2, characterized in that: A first negative pressure chamber and a second negative pressure chamber isolated from each other are formed inside the wiping head. The first negative pressure chamber is communicated with the first adsorption hole, and the second negative pressure chamber is communicated with the second adsorption hole.

4. The coating die cleaning device according to claim 3, characterized in that: The wiping head is provided with guiding inclined surfaces connecting the supporting plane and the side wall of the adsorption groove on both sides in the width direction of the adsorption groove, and each of the guiding inclined surfaces is provided with a third adsorption hole connected with the first negative pressure chamber.

5. The coating die cleaning device according to claim 4, characterized in that: The distribution density of the first adsorption holes on the inner wall of the adsorption groove is smaller than the distribution density of the third adsorption holes on the guide inclined surface.

6. The coating die cleaning device according to claim 1, characterized in that: A sinking step is formed at at least one end of the bottom wall of the adsorption groove in the length direction, and the first adsorption holes are distributed outside the range of the sinking step.

7. The coating die cleaning device according to any one of claims 1 to 6, characterized in that: It also includes a feeding mechanism. The wiping head can pass through the feeding mechanism under the drive of the moving mechanism, and the feeding mechanism can provide wiping sheets to the wiping head.

8. The coating die cleaning device according to claim 7, characterized in that: The feeding mechanism comprises: A material box, having a material bin for accommodating wiping sheet materials, a material outlet communicating with the material bin is provided on a side of the material box facing the wiping head, and a material stopper is provided at an edge of the material outlet; and The elastic material pushing component provides an elastic force pointing to the material outlet for the wiping sheet material contained in the material bin, so as to hold the wiping sheet material against the material blocking portion.

9. The coating die cleaning device according to any one of claims 1 to 6, characterized in that: It also includes a hot pressing mechanism, which includes a hot pressing head. The wiping head can pass through the hot pressing mechanism under the drive of the moving mechanism, and the hot pressing head can extend into the adsorption groove and squeeze the wiping sheet adsorbed by the wiping head until it fits with the inner wall of the adsorption groove.

10. The coating die cleaning device according to any one of claims 1 to 6, characterized in that: It also includes a spraying mechanism. The wiping head can pass through the spraying mechanism under the drive of the moving mechanism, and the spraying mechanism can spray cleaning liquid into the adsorption tank.

11. The coating die cleaning device according to any one of claims 1 to 6, characterized in that: It also includes a clamping mechanism and a waste box. The wiping head can pass through the clamping mechanism under the drive of the moving mechanism. The clamping mechanism can clamp the wiping sheet adsorbed on the adsorption groove. The waste box is located below the clamping mechanism and can receive the wiping sheet released by the clamping mechanism.

12. A coating device, characterized in that: The invention comprises a coating die and a coating die cleaning device as described in any one of claims 1 to 11.

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