Die head device and coater

Abstract

The present application discloses a die head device, which includes an upper die head, a lower die head and a gasket. Among them, the lower die head includes a first main body, on which a main material cavity and a feed port are provided. The feed port is communicated with the main material cavity and is used for allowing a first slurry to flow into the main material cavity; the gasket is provided with a discharge cavity. The gasket includes a frame and at least one spacer portion. The spacer portion is connected to the frame and is arranged in the discharge cavity. The discharge cavity is divided into multiple sub-cavities by the spacer portion. The gasket is fixed between the upper die head and the lower die head. By providing the spacer portion, the discharge cavity is split into multiple smaller sub-cavities. When the first slurry enters the lower die head, each sub-cavity makes the flow of the first slurry in the discharge cavity more uniform, effectively solving the problem of large middle and small sides in the surface density during wide-width coating, and significantly improving the production quality and efficiency. The present application also discloses a coater, which includes the above-mentioned die head device.

Description

Technical Field

[0001] This application relates to the technical field of coating equipment, and particularly relates to a die head device and a coater. Background Art

[0002] The main structure of a lithium-ion battery includes a positive electrode plate, a negative electrode plate, a separator, an electrolyte, and an outer packaging case, etc. The positive and negative electrode plates are obtained by coating a slurry on a current collector and then drying.

[0003] In the related art, in order to reduce costs, the coating width of the die head is often very large. However, due to the flow characteristics of the slurry itself, the situation of heavy in the middle and light on both sides often occurs during the coating process, resulting in poor areal density stability during wide-width coating. Summary of the Invention

[0004] This application aims to solve at least one of the technical problems existing in the prior art. For this reason, this application proposes a die head device that can effectively solve the problem of heavy in the middle and light on both sides during the coating process by adding a spacer on the gasket.

[0005] This application also proposes a coater having the above die head device.

[0006] The first aspect embodiment of this application provides a die head device, including:

[0007] An upper die head;

[0008] A lower die head, the lower die head includes a first main body, a main material cavity and a feed port are provided on the first main body, the feed port is communicated with the main material cavity, and the feed port is used to allow a first slurry to flow into the main material cavity;

[0009] A gasket, an outlet cavity is provided on the gasket, the gasket includes a frame and at least one spacer, the spacer is connected to the frame and is arranged in the outlet cavity, the outlet cavity is divided into a plurality of sub-cavities by the spacer, and the gasket is fixed between the upper die head and the lower die head.

[0010] The die head device according to the embodiment of this application has at least the following technical effects:

[0011] By setting the spacer, the outlet cavity is split into a plurality of smaller sub-cavities. When the first slurry enters the lower die head, each sub-cavity makes the flow of the first slurry in the outlet cavity more uniform, effectively solving the problem of large areal density in the middle and small on both sides during wide-width coating, and significantly improving the production quality and efficiency.

[0012] For the die head device according to some embodiments of the present application, the lower die head further includes a first partition portion, the first partition portion is disposed in the main material cavity and divides the main material cavity into a left material cavity and a right material cavity. The number of the feeding ports is two, which are respectively communicated with the left material cavity and the right material cavity. The gasket further includes a second partition portion, the second partition portion is connected to the frame and is disposed in the discharging cavity. The position of the second partition portion in the discharging cavity is adapted to the position of the first partition portion in the main material cavity. The spacer portions are respectively distributed on both sides of the second partition portion. After the first slurry enters the left material cavity and the right material cavity respectively through the feeding ports, the first partition portion and the second partition portion can prevent the first slurry in the left material cavity from affecting the first slurry in the right material cavity.

[0013] For the die head device according to some embodiments of the present application, the gasket further includes a first single partition board and a second single partition board. The first single partition board is adapted to the left material cavity, and the second single partition board is adapted to the right material cavity. The first single partition board can be detachably connected to the second single partition board.

[0014] For the die head device according to some embodiments of the present application, the gasket further includes a width adjusting portion, the width adjusting portion is fixed to one side of the frame where the spacer portion is disposed, and the width adjusting portion is used to change the width of the coating produced by the die head device.

[0015] For the die head device according to some embodiments of the present application, a secondary material cavity is further disposed on the first main body. The first main body includes a transition portion, the transition portion is disposed between the main material cavity and the secondary material cavity, and the opening area of the secondary material cavity is smaller than the opening area of the main material cavity.

[0016] For the die head device according to some embodiments of the present application, the widths of the sub-cavities are all equal.

[0017] For the die head device according to some embodiments of the present application, the gasket further includes a flow assisting portion, the side surface of the flow assisting portion is arc-shaped, and the flow assisting portion is fixed at the junction of the frame and the spacer portion.

[0018] For the die head device according to some embodiments of the present application, a coating port is disposed at the lower end of the spacer portion, and a material conveying channel is disposed inside. The coating port is communicated with the material conveying channel. A material inlet is disposed on the frame, the material inlet is disposed at the edge of the gasket, and the material inlet is communicated with the material conveying channel. The material inlet is used to enable the second slurry to enter the material conveying channel. The second slurry can flow in the material conveying channel and flow out from the coating port.

[0019] The die head device according to some embodiments of the present application, the upper die head includes a second main body and an adjusting member, an adjusting groove is provided on the lower side of the second main body, the adjusting member is installed on the second main body, and the adjusting member can pass through the adjusting groove to adjust the width of the adjusting groove.

[0020] The second aspect embodiment of the present application provides a coating machine, including the die head device according to the above first aspect embodiment of the present application.

[0021] The coating machine according to the embodiments of the present application has at least the following technical effects:

[0022] By adopting the die head device of the above first aspect embodiment, the coating machine effectively avoids the situation of heavy in the middle and light on both sides during wide-width coating, improving the production quality and efficiency.

[0023] The additional aspects and advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0024] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0025] Figure 1 is a three-dimensional exploded view of the die head device in the embodiments of the present application;

[0026] Figure 2 is a front view of the die head device in the embodiments of the present application;

[0027] Figure 3 is Figure 2 a side view of the die head device in;

[0028] Figure 4 is Figure 2 a cross-sectional view taken along line A-A in;

[0029] Figure 5 is a front view of the lower die head in the embodiments of the present application;

[0030] Figure 6 is a front view of the gasket in the embodiments of the present application;

[0031] Figure 7 is a front view of the gasket in another embodiment of the present application;

[0032] Figure 8 is a front view of the first single partition plate in the embodiments of the present application;

[0033] Figure 9 is a front view of the first single partition plate in another embodiment of the present application;

[0034] Figure 10 This is the front view of the second single partition plate in the embodiment of the present application;

[0035] Reference numerals: lower die head 100, first main body 110, main material cavity 120, first partition part 121, left material cavity 122, right material cavity 123, auxiliary material cavity 130, transition part 140, feed inlet 150, gasket 200, frame 210, spacing part 220, second partition part 221, first single partition plate 222, second single partition plate 223, width adjustment part 230, flow assistance part 240, coating port 250, discharge cavity 260, sub-cavity 261, material inlet 270, thinning part 280, upper die head 300, adjustment groove 320. Detailed implementation manners

[0036] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0037] In the description of the present application, it should be understood that with respect to the orientation description, such as the orientations or positional relationships indicated by up, down, front, back, left, right, etc., are based on the orientations or positional relationships shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0038] In the description of the present application, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0039] The following refers to Figures 1 to 10 Describe a die head device according to an embodiment of the present application.

[0040] The die head device according to the first aspect embodiment of the present application includes an upper die head 300, a lower die head 100, and a gasket 200.

[0041] Among them, the lower die head includes a first main body 110, a main material cavity 120 and a feed inlet 150 are arranged on the first main body 110, the feed inlet 150 is communicated with the main material cavity 120, and the feed inlet 150 is used for enabling the first slurry to flow into the main material cavity 120; a discharge cavity 260 is arranged on the gasket 200, the gasket 200 includes a frame 210 and at least one spacer 220, the spacer 220 is connected to the frame 210 and is arranged in the discharge cavity 260, and the discharge cavity 260 is divided into a plurality of sub-cavities 261 by the spacer 220, and the gasket 200 is fixed between the upper die head 300 and the lower die head 100.

[0042] In the specific use process, the gasket 200 is clamped between the upper die head 300 and the lower die head 100, the first slurry is input into the main material cavity 120 from the feed inlet 150, and under the action of hydraulic pressure, the first slurry flows forward to contact the gasket 200, that is, it flows from the main material cavity 120 into the discharge cavity 260. Since the discharge cavity 260 is divided into a plurality of sub-cavities 261 by the spacer 220, then the first slurry will continue to flow forward in each sub-cavity 261 until it flows out of the die head device to complete the coating process.

[0043] Specifically, as Figures 1 to 6 shown, the lower die head 100 includes a first main body 110, a groove is arranged on one side surface of the first main body 110, and this groove is the main material cavity 120. A through hole penetrating the first main body 110 is arranged on the inner peripheral wall of the main material cavity 120, and this through hole is the feed inlet 150, and the first slurry can flow into the main material cavity 120 through the feed inlet 150. The gasket 200 can be fixed between the upper die head 300 and the lower die head 100, and the side surface of the upper die head 300 that fits with the gasket 200 is a plane. The gasket 200 includes a frame 210, and at the same time, a discharge cavity 260 is also arranged. The lower side of the discharge cavity 260 is an opening, and the spacer 220 is fixed on the frame 210 and is distributed along the upper cavity surface of the discharge cavity 260, dividing the discharge cavity 260 into a plurality of sub-cavities 261.

[0044] At this time, the frame 210 closely adheres to the first main body 110 along the outer edge of the main material cavity 120. The main material cavity 120 is communicated with the discharge cavity 260. At the connection between the main material cavity 120 and the discharge cavity 260, the area of the opening of the main material cavity 120 is equal to or smaller than the area of the opening of the discharge cavity 260 where it is communicated with the main material cavity 120. When the first slurry flows into the discharge cavity 260, a process of diverging from the middle to both sides will occur. In this process, because the feeding pressure in the middle is greater, the first slurry will be thicker in the middle and thinner on both sides when it finally flows out. And because the large discharge cavity 260 is divided into smaller sub-cavities 261, after the thicker first slurry that originally flowed out from the middle of the discharge cavity 260 flows into the sub-cavity 261, although the part flowing out from the middle of the sub-cavity 261 is still thicker than the part flowing out from both sides of the sub-cavity 261, the width of the sub-cavity 261 is smaller. It can be understood that when the pressure in the main material cavity 120 is certain, regardless of the viscosity of the first slurry, it can flow out of the discharge cavity 260 more evenly, thus greatly reducing the impact caused by inconsistent coating surface density.

[0045] In some specific embodiments of the present application, the lower die head 100 further includes a first partition portion 121. The first partition portion 121 is disposed in the main material cavity 120 and divides the main material cavity 120 into a left material cavity 122 and a right material cavity 123. The number of the feeding ports 150 is two, which are respectively communicated with the left material cavity 122 and the right material cavity 123. The gasket 200 further includes a second partition portion 221. The second partition portion 221 is connected to the frame 210 and disposed in the discharge cavity 260. The position of the second partition portion 221 in the discharge cavity 260 is adapted to the position of the first partition portion 121 in the main material cavity 120. The second partition portion 221 is in contact with the first partition portion 121. The spacer portions 220 are respectively distributed on both sides of the second partition portion 221. When the first slurry enters the left material cavity 122 and the right material cavity 123 respectively through the feeding ports 150, the first partition portion 121 and the second partition portion 221 can prevent the first slurry in the left material cavity 122 from affecting the first slurry in the right material cavity 123.

[0046] In the specific use process, since the main material cavity 120 is divided into a left material cavity 122 and a right material cavity 123 by the first partition portion 121, the first slurry can flow into the left material cavity 122 and the right material cavity 123 respectively from the two feeding ports 150, and the first slurry flowing into the left material cavity 122 and the first slurry flowing into the right material cavity 123 will not be mixed with each other. Then, under the action of hydraulic pressure, the first slurry flows forward into the discharge cavity 260. At this time, under the action of the second partition portion 221 in the gasket 200, the first slurry flowing out from the left material cavity 122 and the first slurry flowing out from the right material cavity 123 still remain independent of each other. Finally, the first slurry flows out of the die head device, and two products are coated simultaneously.

[0047] Specifically, asFigure 5 and Figure 6 As shown in Figure 6 , the first partition 121 is connected to the first main body 110 and is disposed within the main material chamber 120, dividing the main material chamber 120 into two parts: a left material chamber 122 and a right material chamber 123. The lengths of the left material chamber 122 and the right material chamber 123 may be equal or unequal, while their widths and depths are kept consistent. The second partition 221 is disposed within the discharge chamber 260, corresponding to the position of the first partition 121 within the main material chamber 120. The second partition 221 is fixed at a corresponding position on the frame 210, and the width of the second partition 221 is equal to or less than the width of the first partition 121, so as to ensure that when the gasket 200 is fixed between the upper die head 300 and the lower die head 100, the first partition 121 can fully fit with the second partition 221, ensuring the sealing performance at the first partition 121 and the second partition 221. At the same time, the spacer 220 is respectively fixed on the first main body 110 along the upper cavity surface of the discharge chamber 260 and is distributed on both sides of the second partition 221, thereby optimizing the uniformity of the coating surface density when coating two products.

[0048] Furthermore, the lengths of the left material chamber 122 and the right material chamber 123 are unequal, corresponding to two types of products respectively, so that the mold device can simultaneously coat two different types of products. Such a design significantly increases the applicable range of the die head device and significantly reduces the production cost. It can be understood that according to the different types of two products to be coated simultaneously, the positions of the first partition 121 and the second partition 221 can be adaptively changed.

[0049] In some specific embodiments of the present application, the gasket 200 further includes a first single partition 222 and a second single partition 223. The first single partition 222 is adapted to the left material chamber 122, and the second single partition 223 is adapted to the right material chamber 123. The first single partition 222 can be detachably connected to the second single partition 223.

[0050] Specifically, as Figures 7 to 10 shown, the gasket 200 can be split into two parts: a first single partition 222 and a second single partition 223. One side outer frame of the first single partition 222 can be detachably connected to one side outer frame of the second single partition 223. The connection method can be a magnetic adsorption connection method or a snap-fit connection method. At this time, the main material chamber 120 is divided into a left material chamber 122 and a right material chamber 123 by the first partition 121. The left material chamber 122 corresponds to the first single partition 222, and the right material chamber 123 corresponds to the second single partition 223. The one side outer frames of the first single partition 222 and the second single partition 223 that are connected together jointly form the second partition 221.

[0051] When only one type of product needs to be coated, the second single partition 223 is removed, and only the first single partition 222 adapted to the product is left. At this time, the first single partition 222 can limit the first slurry, so that the first slurry flowing out of the left material chamber 122 can continue to flow forward in the discharge chamber 260 included in the first single partition 222, thereby realizing product coating; when two types of products need to be coated, the first single partition 222 and the second single partition 223 are respectively adapted to the two types of products and are detachably connected together, so that the first slurries flowing out of the left material chamber 122 and the right material chamber 123 can flow forward in their respective corresponding discharge chambers 260 without affecting each other, thereby realizing the coating of the products adapted to them respectively. It can be understood that, according to different production requirements, the first single partition 222 and the second single partition 223 can be adaptively changed with the change of the product. In the actual production process, only by splicing different first single partitions 222 and second single partitions 223, the model of the product that the die head device can coat can be changed. Through the design of such a gasket 200, the die head device can be applied to coat products of different models in more different situations.

[0052] In some specific embodiments of the present application, the gasket 200 further includes a width adjustment portion 230. The width adjustment portion 230 is fixed to one side of the spacer portion 220 provided on the frame 210. The width adjustment portion 230 is used to change the width of the coating produced by the die head device.

[0053] Specifically, as Figure 6 shown, the width adjustment portion 230 is arranged inside the lower side of the frame 210 and the discharge chamber 260, and forms an "L" shape after being combined with the corresponding part of the frame 210 at this place. It can be understood that the length of the width adjustment portion 230 can be adaptively adjusted with the change of the coating amplitude. That is, by setting width adjustment portions 230 with different lengths, the die head device can achieve coatings with different amplitudes only by replacing the gasket 200, which increases the applicable range of the die head device and reduces the processing cost.

[0054] Furthermore, the width adjustment portion 230 is detachably fixed inside the lower side of the frame 210 and the discharge chamber 260. The fixing method can be magnetic adsorption fixing or can be fixed through a slot and a buckle structure. When the die head device needs to perform coatings with different amplitudes, only the width adjustment portion 230 with a suitable length needs to be replaced. It is not difficult to understand that such a design broadens the applicable range of the gasket 200 and reduces the cost.

[0055] In some specific embodiments of the present application, the bottom surface of the main material chamber 120 is an arc surface.

[0056] Specifically, as Figure 4As shown, the main material chamber 120 is a groove provided on the first main body 110, and the bottom surface of the groove is in the shape of a circular arc curved surface, that is, the vertical cross-section of the main material chamber 120 is always in the shape of a fan surface. When the first slurry flows into the main material chamber 120 from the feed port 150, it will continue to flow forward under the hydraulic action of the subsequent incoming first slurry. At this time, the design of the bottom surface of the main material chamber 120 is more conducive to the flow of the first slurry, and after use, there will be no large amount of accumulated liquid in the main material chamber 120 due to structural problems, reducing waste and the difficulty of cleaning.

[0057] In some specific embodiments of the present application, a secondary material chamber 130 is further provided on the first main body 110. The first main body 110 includes a transition portion 140. The transition portion 140 is provided between the main material chamber 120 and the secondary material chamber 130, and the opening area of the secondary material chamber 130 is smaller than the opening area of the main material chamber 120.

[0058] In the specific use process, under the action of hydraulic pressure, the first slurry flows from the main material chamber 120 into the discharge chamber 260, and then continues to flow forward through the transition portion 140. Part of the first slurry enters the secondary material chamber 130, and then flows into the discharge chamber 260 again from the secondary material chamber 130, while the other part of the slurry always flows forward in the discharge chamber 260.

[0059] Specifically, as Figure 4 and Figure 5 shown, on the side surface of the first main body 110 where the main material chamber 120 is provided, a groove is further provided. This groove is the secondary material chamber 130. The secondary material chamber 130 is provided below the main material chamber 120. The length of the secondary material chamber 130 is equal to that of the main material chamber 120, and the width and depth are both smaller than those of the main material chamber 120. On this side surface of the first main body 110, the area between the secondary material chamber 130 and the main material chamber 120 is the transition portion 140. The transition portion 140 and the side surface of the upper die head 300 limit the first slurry within the discharge chamber 260. It is not difficult to understand that when the first slurry flows from the main material chamber 120 into the discharge chamber 260 and then flows through the transition portion 140 into the secondary material chamber 130, the fluid pressure energy can be effectively reduced. In the process of the first slurry flowing out of the secondary material chamber 130 until it flows out of the die head to complete the coating process, due to the pressure reduction of the secondary material chamber 130, the control of the coating surface density is more precise, thereby improving the processing quality.

[0060] In some specific embodiments of the present application, the bottom surface of the secondary material chamber 130 is an arc surface.

[0061] Specifically, as Figure 4As shown, the auxiliary material chamber 130 is a groove arranged on the first body 110, and the bottom surface of the groove is in the shape of an arc-shaped curved surface, that is, the vertical section of the auxiliary material chamber 130 is always in the shape of a fan. The first slurry flows through the transition portion 140 into the auxiliary material chamber 130 under the action of hydraulic pressure, and continues to flow forward after filling the auxiliary material chamber 130. At this time, the design of the bottom surface of the auxiliary material chamber 130 is more conducive to the flow of the first slurry, and after use, there will be no large amount of liquid accumulation in the auxiliary material chamber 130 due to structural problems, thereby reducing waste and reducing the difficulty of cleaning.

[0062] In some specific embodiments of the present application, the widths of the sub-cavities 261 are all equal.

[0063] Specifically, the spacers 220 are fixed on the frame 210 and distributed along the upper cavity surface of the discharge cavity 260, so as to divide the discharge cavity 260 into a plurality of sub-cavities 261 of equal width, that is, when there is only one spacer 220, the distance between the spacer 220 and the left and right cavity surfaces of the discharge cavity 260 is equal; when the number of spacers 220 is greater than one, the distance between the leftmost spacer 220 and the left cavity surface of the discharge cavity 260 is equal to the distance between the rightmost spacer 220 and the right cavity surface of the discharge cavity 260, and the distance between every two adjacent spacers 220 is equal to the distance. It can be understood that such a design further optimizes the consistency of the coating surface density, so that the quality and efficiency of the processing are improved.

[0064] In some specific embodiments of the present application, the gasket 200 further includes a flow-aiding portion 240 , the side surface of the flow-aiding portion 240 is arc-shaped, and the flow-aiding portion 240 is fixed at the junction of the frame 210 and the spacer 220 .

[0065] Specifically, Figure 6 As shown, the flow-aiding portion 240 is arranged at the intersection of the frame 210 and the partition portion 220, and is a part of the inner wall of the discharge chamber 260. The side surface of the flow-aiding portion 240 is arc-shaped, so that the discharge chamber 260 does not have a right-angle structure at the flow-aiding portion 240. It can be understood that after the first slurry flows into the discharge chamber 260 from the feed inlet 150, the design of the flow-aiding portion 240 ensures that the first slurry will not be accumulated during the flow process due to the right-angle structure of the discharge chamber 260, thereby optimizing the flow of the first slurry in the discharge chamber 260.

[0066] In some specific embodiments of the present application, a coating port 250 is provided at the lower end of the spacer 220 and a feed channel is provided inside, the coating port 250 is connected to the feed channel, and an inlet 270 is provided on the frame 210, the inlet 270 is connected to the feed channel, and the inlet 270 is used to allow the second slurry to enter the feed channel, and the second slurry can flow in the feed channel and flow out from the coating port 250.

[0067] In the specific use process, the second slurry enters the material conveying channel from the material inlet 270, and under the guidance of the material conveying channel, it flows out from the lower end of the partition part 220, that is, the coating port 250, and then flows out of the die head device; while the first slurry can flow in from the feed port 150 and finally flow out of the die head device from within each sub-cavity 261. The first slurry and the second slurry are fully mixed during this process.

[0068] Specifically, as Figure 6 described, the material inlet 270 is arranged on the frame 210, while the coating port 250 is arranged at the lower end of each partition part 220. A material conveying channel is arranged within the gasket 200, and the material conveying channel connects the material inlet 270 and the coating port 250. The second slurry is a kind of slurry different from the first slurry. The second slurry can be a ceramic slurry, etc. It enters the material conveying channel through the material inlet 270 and flows out from the coating port 250 along the material conveying channel, while the first slurry flows out from each sub-cavity 261 at the same time. The two are fully mixed, thereby achieving the purpose of synchronous coating of the first slurry and the second slurry. Such a design optimizes the uniformity of the coating surface density while effectively improving the coating efficiency.

[0069] In some specific embodiments of the present application, the upper die head 300 includes a second main body 310 and an adjusting member. An adjusting groove 320 is arranged on the lower side of the second main body 310. The adjusting member is installed on the second main body 310, and the adjusting member can pass through the adjusting groove 320 to adjust the width of the adjusting groove 320.

[0070] In the specific use process, the adjusting groove 320 is arranged on the lower side of the second main body 310. The adjusting member is installed on the second main body 310, and the adjusting member can exert a force on the inner peripheral wall of the adjusting groove 320. Under the action of this force, the width of the adjusting groove 320 will change, thereby changing the distance between the lower end of the upper die head 300 and the lower end of the lower die head 100, and thus changing the flow rate and flow volume of the first slurry when it flows out of the die head device.

[0071] Specifically, as Figure 1 and Figure 3As shown, the adjusting member can be a mother-son screw or a hydraulic-driven telescopic rod, etc. A part of the adjusting member vertically or approximately vertically passes through the adjusting groove 320. The adjusting member can generate a certain acting force on the inner peripheral wall of the adjusting groove 320 by changing the positional relationship between the contained structures. Under the action of this acting force, the width of the adjusting groove 320 will undergo a certain flexible deformation. And the adjusting groove 320 is arranged on the lower side of the second main body 310, that is, near the position where the first slurry flows out of the die head device. Therefore, the change in the width of the adjusting groove 320 will directly affect the distance between the lower end of the first main body 110 and the lower end of the second main body 310, thereby affecting the width at the position where the first slurry flows out of the die head device, and further changing the flow rate and flow volume when the first slurry flows out of the die head device, so that the die head device can be adapted to more product coatings with different requirements.

[0072] For example, the adjusting member is a mother-son screw. The adjusting member vertically passes through the adjusting groove 320 and is fixed on the second main body 310. It can be understood that when the adjusting member rotates under manual control, the adjusting member can generate an acting force on the two inner peripheral walls of the adjusting groove 320 that are in contact with the adjusting member. Under the action of this acting force, the width of the adjusting groove 320 will change accordingly.

[0073] An embodiment of the second aspect of the present application provides a coating machine, including the die head device according to the above-mentioned first aspect embodiment of the present application.

[0074] Specifically, by adopting the die head device of the above-mentioned first aspect embodiment, the coating machine effectively avoids the situation of heavy in the middle and light on both sides during the wide-width coating process, and improves the production quality and efficiency.

[0075] The above has described the embodiments of the present application in detail with reference to the drawings. However, the present application is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art to which the present application pertains, various changes can also be made without departing from the purpose of the present application.

Claims

1. A die head device, characterized in that, Comprising: Upper die head; Lower die head, the lower die head includes a first main body, a main material cavity and a feed port are arranged on the first main body, the feed port is communicated with the main material cavity, and the feed port is used for enabling a first slurry to flow into the main material cavity; Gasket, a discharge cavity is arranged on the gasket, the gasket includes a frame and at least one partition portion, the partition portion is connected to the frame and arranged in the discharge cavity, the discharge cavity is divided into a plurality of sub-cavities by the partition portion, and the gasket is fixed between the upper die head and the lower die head; the lower die head further includes a first partition portion, the first partition portion is arranged in the main material cavity and divides the main material cavity into a left material cavity and a right material cavity, the number of the feed ports is two, which are respectively communicated with the left material cavity and the right material cavity, the gasket further includes a second partition portion, the second partition portion is connected to the frame and arranged in the discharge cavity, the position of the second partition portion in the discharge cavity is adapted to the position of the first partition portion in the main material cavity, the partition portions are respectively distributed on both sides of the second partition portion, when the first slurry enters the left material cavity and the right material cavity through the feed ports respectively, the first partition portion and the second partition portion can prevent the first slurry in the left material cavity from affecting the first slurry in the right material cavity; a coating port is arranged at the lower end of the partition portion, a material conveying channel is arranged inside the partition portion, the coating port is communicated with the material conveying channel, a material inlet is arranged on the frame, the material inlet is communicated with the material conveying channel, and the first slurry flowing out of the sub-cavity and the second slurry flowing out of the coating port are fully mixed and then flow out of the die head device to optimize the uniformity of the coating surface density.

2. The die head device according to claim 1, characterized in that, The gasket can be disassembled into a first single partition board and a second single partition board, the first single partition board is adapted to the left material cavity, the second single partition board is adapted to the right material cavity, and the first single partition board can be detachably connected to the second single partition board.

3. The die head device according to claim 1, characterized in that, The gasket further includes a width adjusting portion, the width adjusting portion is fixed on one side of the frame where the partition portion is arranged, and the width adjusting portion is used for changing the width of the coating produced by the die head device.

4. The die head device according to claim 1, characterized in that, A secondary material cavity is further arranged on the first main body, the first main body includes a transition portion, the transition portion is arranged between the main material cavity and the secondary material cavity, and the opening area of the secondary material cavity is smaller than the opening area of the main material cavity.

5. The die head device according to claim 1, characterized in that, The widths of the sub-cavities are all equal.

6. The die head device according to claim 1, characterized in that, The gasket further includes a flow assisting portion, the side surface of the flow assisting portion is arc-shaped, and the flow assisting portion is fixed at the junction of the frame and the partition portion.

7. The die head device according to claim 1, characterized in that, The upper die head includes a second main body and an adjusting member, an adjusting groove is arranged on the lower side of the second main body, the adjusting member is installed on the second main body, and the adjusting member can pass through the adjusting groove and adjust the width of the adjusting groove.

8. A coater, characterized in that, Comprising the die head device according to any one of claims 1-7.

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