Exhaust device and curtain coating, drying and curing equipment
By designing an exhaust device including a shell and a air guide plate, the problems of uneven thickness and poor appearance of the ceramic membrane belt during drying are solved, and high-quality drying effect is achieved.
Patent Information
- Application Number
- CN202421804347.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-26
AI Technical Summary
During the manufacturing process of existing ceramic capacitors, the combination of the hot air system and the air box causes uneven thickness, locally raised or concave during the drying process, affecting product quality.
An exhaust device is designed, including a shell and a air guide plate, and an air duct is formed inside the shell, and the air flow is guided parallel to the conveying direction through the air guide plate, avoiding direct vertical blowing to the material belt, and through the combination of multiple air outlets and air guide plates, ensuring consistency of wind speed and strength.
The drying quality of the ceramic film tape is improved, and a high-quality dry appearance with high thickness uniformity is obtained, which solves the problem of poor appearance in the prior art.
Smart Images
Figure CN222952941U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of ceramic capacitor manufacturing, and in particular to an exhaust device and a casting drying and curing device. Background Art
[0002] The preparation process of chip ceramic capacitors (MLCC) generally involves first going through powder slurrying, casting, printing, lamination, cutting, debinding and sintering steps to obtain a green body, and then going through termination and sintering to obtain the external electrode. The quality of the ceramic cast film tape obtained by casting directly determines whether the subsequent product is qualified. An important step in determining the quality of the film tape is to use a casting machine to cast the slurry to obtain a ceramic film tape and then dry it to make it initially dry and solidify it into shape.
[0003] The most commonly used drying device at present is a combination of a hot air system and a wind box. The film strip is dried by continuous hot air from the air outlet of the wind box, and the wind direction of the hot air after being blown out from the wind box shell is nearly vertical, which has a great adverse effect on the appearance of the unformed film strip, especially for ultra-thin products, which are prone to uneven thickness, local protrusions or depressions and have poor appearance. By simply changing the air outlet position of the wind box so that the air outlet is set parallel to the film strip, the consistency of the hot air speed and intensity at the two ends of the film strip cannot be guaranteed, which is not conducive to the large-scale production of ceramic cast film strips and the quality assurance of the film strips. Summary of the invention
[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an exhaust device and a casting drying and curing device, wherein the exhaust device helps to improve the drying quality of the material strip.
[0005] According to the exhaust device provided in the present application, it includes a shell and an air guide plate, and an air duct is formed inside the shell. The shell includes a first wall plate and a second wall plate arranged in the vertical direction, a fourth wall plate and a fifth wall plate arranged opposite to each other in the horizontal direction, and two third wall plates. The two third wall plates are respectively connected to the first wall plate, the second wall plate, the fourth wall plate and the fifth wall plate to surround the shell. The second wall plate gradually approaches the first wall plate in the vertical direction and connects with the fourth wall plate. The shell is provided with an air inlet and an air outlet connected to the air duct. The air inlet is located on at least one of the third wall plates, and is located at an end close to the fifth wall plate and away from the first wall plate. Multiple air outlets are arranged on the first wall plate at intervals along the length direction of the first wall plate. The air guide plate is arranged on the outside of the first wall plate, and the position of the air guide plate corresponds to the multiple air outlets.
[0006] According to some embodiments of the present application, the first wall panel is located on the lower side of the second wall panel.
[0007] According to some embodiments of the present application, the air inlet is located on one of the third wall panels, and the two third wall panels are respectively connected to the first wall panel, the second wall panel, the fourth wall panel and the fifth wall panel to form the shell.
[0008] According to some embodiments of the present application, the shortest vertical distance from the air inlet to the first wall panel is not less than two-thirds of the longest vertical distance between the first wall panel and the second wall panel.
[0009] According to some embodiments of the present application, the air outlet is formed by a perforated plate, and the perforated plate is provided with a plurality of groups of holes arranged at intervals along the length direction of the first wall panel.
[0010] According to some embodiments of the present application, each air outlet is provided with a plurality of the air guide plates, the number of the air guide plates corresponds to the number of groups of the holes, the air guide plates gradually incline and extend along a direction facing the fourth wall panel and parallel to the length direction of the first wall panel, and the end of the air guide plate is parallel to the length direction of the first wall panel.
[0011] According to some embodiments of the present application, the plane where the first wall panel is located is taken as the reference plane, the upstream and downstream are divided by the vertical center line of the first wall panel, and the slope of the second wall panel near any point downstream is defined as x, and the slope of the second wall panel near any point upstream is defined as y. The second wall panel satisfies x is 0.05 to 0.4, y is 0.01 to 0.15, and y is not greater than x.
[0012] According to some embodiments of the present application, the maximum distance between the first wall plate and the second wall plate is defined as A, and the minimum distance is defined as a. The exhaust device satisfies a <A<4a。
[0013] According to some embodiments of the present application, the width of the air outlet in the length direction of the first wall plate is defined as b, the maximum vertical height of the air guide plate is defined as c, and the exhaust device meets the 0.15A <b<0.75A、0.2a<b<0.95a、0.5b<c<A。
[0014] The exhaust device provided by this application has at least the following technical effects:
[0015] First, the air guide plate guides the airflow parallel to the conveying direction (i.e., the length direction of the first wall plate, the same below), so the airflow does not blow directly and vertically to the material belt, but drives the air around the material belt to heat up and flow in a directional manner, so as to volatilize the organic components in the material belt or dry the liquid components, thereby avoiding the poor appearance that may be caused by blowing directly to the material belt;
[0016] Second, multiple air outlets and multiple air guide plates are arranged along the conveying direction to make the air outlet uniform, which helps to improve the consistency of wind speed and intensity in different areas;
[0017] Third, by adopting an air duct design in which the second wall panel gradually approaches the first wall panel in the vertical direction, and the air inlet is set on the third wall panel at a position away from the first wall panel, while the positions of the fourth wall panel and the fifth wall panel are not used for air inlet, the wind pressure at various locations inside the shell tends to be averaged, further improving the consistency of wind speed and intensity at the air outlets in different areas.
[0018] Therefore, the exhaust device helps to improve the drying quality of the material strip and obtain a high-quality dry appearance with high thickness uniformity.
[0019] The casting drying and curing equipment provided in the present application includes the exhaust device provided in the present application.
[0020] The exhaust device and the cast drying and curing equipment provided in the present application include the exhaust device provided in the present application. Therefore, the exhaust device and the cast drying and curing equipment correspondingly have the beneficial effects provided by the exhaust device, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0022] Figure 1 is an axonometric schematic diagram of an exhaust device according to an embodiment of the present application;
[0023] Figure 2 is an exploded isometric diagram of the exhaust device of an embodiment of the present application at another angle;
[0024] Figure 3 is a side cross-sectional schematic diagram of an exhaust device according to an embodiment of the present application;
[0025] Figure 4 is a side view schematic diagram of an air guide plate of an embodiment of the present application;
[0026] Figure 5 It is an axonometric schematic diagram of the air guide plate of an embodiment of the present application.
[0027] Reference numerals:
[0028] Shell 100 , first wall plate 110 , air outlet 111 , second wall plate 120 , third wall plate 130 , air inlet 131 , fourth wall plate 140 , fifth wall plate 150 ; air guide plate 200 ; orifice plate 300 ; ceramic membrane strip 900 . DETAILED DESCRIPTION
[0029] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0030] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.
[0031] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0032] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.
[0033] Figure 1 , Figure 2 and Figure 3 An embodiment of an exhaust device of the present application is exemplarily shown, wherein the exhaust device is used to supply hot air to dry the material strip (here, the ceramic membrane strip 900 after casting).
[0034] Reference Figure 1 , Figure 2 and Figure 3 Exemplarily, the exhaust device includes a housing 100 and an air guide plate 200 , and an air duct is formed inside the housing 100 . The air duct is used to transport hot air to the ceramic membrane belt 900 .
[0035] The housing 100 includes a first wall plate 110 and a second wall plate 120 arranged in a vertical direction (here, a direction perpendicular to the surface of the ceramic membrane strip 900, that is, a thickness direction of the ceramic membrane strip 900), and the housing 100 also includes a fourth wall plate 140 and a fifth wall plate 150 arranged opposite to each other in a horizontal direction, and two third wall plates 130. The two third wall plates 130 are respectively connected to the first wall plate 110, the second wall plate 120, the fourth wall plate 140 and the fifth wall plate 150 to form the housing 100. The second wall plate 120 is gradually Close to the first wall panel 110 and connected to the fourth wall panel 140, the shell 100 is also provided with an air inlet 131 and an air outlet 111 connecting the air duct. The air inlet 131 is located on at least one third wall panel 130, and is located at one end close to the fifth wall panel 150 and away from the first wall panel 110. The multiple air outlets 111 are arranged on the first wall panel 110 at intervals along the conveying direction of the ceramic membrane tape 900 (in the illustrated embodiment, the conveying direction refers to the direction in which the ceramic membrane tape 900 is conveyed from right to left in the horizontal direction, which is also the length direction of the first wall panel 110).
[0036] The air guide plate 200 is disposed on the outer side of the first wall plate 110 , and the position of the air guide plate 200 corresponds to the plurality of air outlets 111 .
[0037] First, multiple air outlets 111 and multiple air guide plates 200 are arranged along the conveying direction to make the air outlet uniform, which helps to improve the consistency of wind speed and intensity in different areas.
[0038] Secondly, by adopting a design in which the second wall panel 120 gradually approaches the first wall panel 110 in the vertical direction, that is, adopting a design in which the cross-sectional area of the air duct in the vertical direction (shown as section S in the figure) gradually decreases, the wind pressure at various locations inside the shell 100 tends to be averaged, and the consistency of wind speed and intensity at the air outlets 111 in different areas is further improved.
[0039] Furthermore, since the air inlet 131 is disposed on the third wall plate 130 and is located at one end close to the fifth wall plate 150 and away from the first wall plate 110 (which also means that the fourth wall plate 140 and the fifth wall plate 150 are not located for air inlet), on the one hand, the direction of the airflow entering from the air inlet 131 and the direction of the airflow of the air outlet 111 intersect, and the air inlet 131 does not face any of the air outlets 111; on the other hand, the direction of the airflow entering from the air inlet 131 and the extension direction of the air duct (in Figure 1 , Figure 2 , Figure 3In the embodiment shown, there is a cross (referring to the direction in which the ceramic membrane belt 900 is horizontally transported from right to left), and the air inlet 131 is not facing the extension direction. The airflow entering the air inlet 131 needs to diffuse and change its direction in the air duct before it can move along the air duct and flow out of the air outlet 111. In this way, the airflow at the air inlet 131 can be prevented from blowing directly to the air outlet 111, and the wind pressure at the air outlet 111 near the air inlet 131 can be prevented from being disturbed.
[0040] Therefore, the exhaust device helps to improve the drying quality of the material strip and obtain a high-quality dry appearance with high thickness uniformity.
[0041] It is understandable that since the surface of the cast ceramic film strip 900 has a certain fluidity, Figure 1 , Figure 2 , Figure 3 In the illustrated embodiment, the ceramic membrane belt 900 is transported in a horizontal direction, and at this time, the first wall plate 110 is located at the lower side of the second wall plate 120 .
[0042] Of course, in addition to the ceramic membrane strip 900, the exhaust device can also be used to dry other strip-shaped extended material strips, such as battery electrodes, etc. At this time, the material strip may be conveyed at other angles, and the arrangement angle of the exhaust device may also change accordingly, which will not be elaborated here.
[0043] The present application also provides a tape-casting drying and curing device, which includes an exhaust device and is used to dry the ceramic film strip 900 after tape-casting.
[0044] The casting drying and curing equipment has corresponding beneficial effects provided by the exhaust device, which will not be described in detail here.
[0045] It is understandable that, referring to Figure 3 The first wall plate 110, the second wall plate 120 and the third wall plate 130 define the cross-sectional shape of the air outlet in the conveying direction, the fourth wall plate 140 and the fifth wall plate 150 are vertically arranged, and the fourth wall plate 140 and the fifth wall plate 150 are respectively located at both ends in the conveying direction, thereby blocking both ends of the shell 100, so that the airflow can only enter from the air inlet 131 and flow out from the air outlet 111.
[0046] Specifically, the first wall plate 110 can be parallel to the conveying direction of the ceramic membrane tape 900, and the second wall plate 120 gradually approaches the first wall plate 110 along the conveying direction. By adopting the parallel arrangement between the first wall plate 110 and the ceramic membrane tape 900, and the second wall plate 120 gradually approaches the first wall plate 110 to control the wind pressure, it is possible to ensure that the distances between different air outlets 111 and the material strip of the ceramic membrane tape 900 are consistent, improve the consistency of the drying capacity at different positions, and ensure the quality stability of the ceramic membrane tape 900.
[0047] In some embodiments, the air inlet 131 is located on a third wall plate 130. Optionally, in some embodiments, the shortest vertical distance between the air inlet 131 and the first wall plate 110 is not less than two-thirds of the longest vertical distance between the first wall plate 110 and the second wall plate 120. This increases the distance between the air inlet 131 and the air outlet 111, reduces the impact of the airflow entering the air duct on the air outlet 111, and further avoids the wind pressure of the air outlet 111 near the air inlet 131 from being disturbed.
[0048] It should be noted that, since the air guide plate 200 allows the airflow to be blown out in parallel, a certain distance needs to be maintained between the air outlets 111 to prevent the adjacent airflows from interfering with each other. In this case, the size of the air outlet 111 often needs to be increased to ensure the drying capacity. However, after the air outlet 111 is increased, the air guide plate 200 has a poor guiding effect on the far end of the air outlet 111 (that is, the end away from the air guide plate 200).
[0049] In some embodiments, the air outlet 111 is formed by a perforated plate 300, and the perforated plate 300 is provided with a plurality of groups of holes arranged at intervals along the length direction of the first wall plate. Further, in some embodiments, each air outlet is provided with a plurality of air guide plates 200, the number of which corresponds to the number of groups of holes, and the air guide plates 200 gradually incline and extend along a direction facing the fourth wall plate 140 and parallel to the length direction of the first wall plate 110, and the end of the air guide plate 200 is parallel to the length direction of the first wall plate.
[0050] By subdividing the air outlet 111 into a plurality of groups of holes and then using a plurality of air guide plates 200 to guide the wind in parallel directions, the quality of the airflow leaving the air outlet 111 can be improved.
[0051] For example, refer to Figure 4 and Figure 5 The orifice plate 300 has four groups of holes that are spaced apart, and each group of holes has two rows of holes that are staggered in the horizontal direction. There are four air guide plates 200, and each corresponds to each group of holes, ensuring that the hot air is divided into four air flows with uniform air volume after passing through the orifice plate 300.
[0052] Specifically, the air guide plate 200 is connected to the orifice plate 300, and one end of the air guide plate 200 connected to the orifice plate 300 is close to the hole, so that the airflow blown out from the hole can be guided by the air guide plate 200 as soon as possible. The air guide plate 200 extends obliquely along a direction facing the fourth wall plate 140 and parallel to the length direction of the first wall plate 110, and the end of the air guide plate 200 is parallel to the length direction of the first wall plate 110, thereby guiding the airflow to blow out in parallel.
[0053] It can be understood that the air guide plate 200 guides the air flow parallel to the conveying direction. Therefore, the air flow does not blow directly vertically toward the ceramic membrane belt 900, but drives the air around the ceramic membrane belt 900 to heat up and flow horizontally, thereby causing the organic components in the ceramic membrane belt 900 to volatilize or the liquid components to dry, thereby avoiding the poor appearance that may be caused by blowing directly toward the ceramic membrane belt 900.
[0054] In order to improve the wind guiding ability of the wind guide plate 200, in some embodiments, the wind guide plate 200 can be designed with a smooth arc or curved surface, so that the airflow along the wind guide plate 200 flows more smoothly. Figure 4 The air guide plate 200 may include an arc segment and a straight segment, the straight segment is parallel to the conveying direction, the arc segment is connected between the straight segment and the orifice plate 300, and there is a smooth transition between the arc segment and the straight segment.
[0055] It should be pointed out that in Figure 4 , Figure 5 In the illustrated embodiment, the air guide plate 200 and the orifice plate 300 are integrally formed, which makes it easy to process the air guide plate 200 and the orifice plate 300 through a mold, and can improve the position accuracy of the air guide plate 200. However, the arrangement of the air guide plate 200 in the present application is not limited to this, as long as the air guide plate 200 can guide the airflow, the present application does not limit this. For example, the air guide plate 200 can of course also be designed separately from the orifice plate 300, and the air guide plate 200 can be directly installed on the first wall plate 110.
[0056] In some embodiments, in order to ensure consistent wind pressure, the plane where the first wall plate 110 is located is used as the reference plane, and the slope of the second wall plate 120 near any point downstream is defined as x, and the slope of the second wall plate 120 near any point upstream is defined as y. The second wall plate 120 satisfies x of 0.05 to 0.4, y of 0.01 to 0.15, and y is not greater than x. It can be understood that, referring to Figure 2 The second wall plate 120 is divided into a side close to the upstream and a side close to the downstream, with the vertical center line of the shell 100 at the first wall plate 110 as the boundary.
[0057] In addition, in some embodiments, the second wall panel 120 may be designed as a smooth arc or curved surface to improve the continuity of wind pressure changes.
[0058] In some embodiments, the maximum distance between the first wall plate 110 and the second wall plate 120 is defined as A, the minimum distance is defined as a, and the exhaust device satisfies a. <A<4a。
[0059] In some embodiments, the width of the air outlet 111 in the length direction of the first wall plate is defined as b, the maximum vertical height of the air guide plate 200 is defined as c, and the exhaust device meets the 0.15A <b<0.75A、0.2a<b<0.95a、0.5b<c<A。
[0060] Through these limitations, it can be further ensured that the wind guided out by each wind guide plate 200 can be blown out in parallel with the direction of the ceramic membrane strip 900 and the wind direction, wind pressure and wind speed between adjacent air outlets 111 are consistent without causing conflict or offset between each other.
[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0062] In some selectable embodiments, the function / operation mentioned in the block diagram may not occur in the order mentioned in the operation diagram. For example, depending on the function / operation involved, the two boxes shown in succession can actually be executed substantially simultaneously or the boxes can sometimes be executed in reverse order. In addition, the embodiment presented and described in the flow chart of the application is provided by way of example, for the purpose of providing a more comprehensive understanding of technology. The disclosed method is not limited to the operation and logic flow presented herein. Selectable embodiments are expected, wherein the order of various operations is changed and the sub-operation of a part described as a larger operation is performed independently.
[0063] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.
Claims
1. An exhaust device, characterized in that: include: A shell, with an air duct formed inside, the shell comprising a first wall plate and a second wall plate arranged in a vertical direction, a fourth wall plate and a fifth wall plate arranged opposite to each other in a horizontal direction, and two third wall plates, the two third wall plates are respectively connected with the first wall plate, the second wall plate, the fourth wall plate and the fifth wall plate to surround the shell, the second wall plate gradually approaches the first wall plate in a vertical direction and connects with the fourth wall plate, the shell is provided with an air inlet and an air outlet connected to the air duct, the air inlet is located on at least one of the third wall plates, and is located at an end close to the fifth wall plate and away from the first wall plate, and a plurality of the air outlets are arranged on the first wall plate at intervals along the length direction of the first wall plate; An air guide plate is arranged on the outer side of the first wall plate, and the position of the air guide plate corresponds to the plurality of air outlets.
2. The exhaust device according to claim 1, characterized in that: The first wall panel is located at the lower side of the second wall panel.
3. The exhaust device according to claim 1, characterized in that: The shortest vertical distance from the air inlet to the first wall panel is not less than two-thirds of the longest vertical distance between the first wall panel and the second wall panel.
4. The exhaust device according to claim 1, characterized in that: The air outlet is formed by a perforated plate, and the perforated plate is provided with a plurality of groups of holes arranged at intervals along the length direction of the first wall plate.
5. The exhaust device according to claim 4, characterized in that: Each of the air outlets is provided with a plurality of the air guide plates, the number of the air guide plates corresponds to the number of groups of the holes, the air guide plates gradually incline and extend along a direction facing the fourth wall panel and parallel to the length direction of the first wall panel, and the end of the air guide plate is parallel to the length direction of the first wall panel.
6. The exhaust device according to claim 1, characterized in that: Taking the plane where the first wall panel is located as the reference plane, dividing the upstream and downstream with the vertical center line of the first wall panel, defining the slope of the second wall panel near any point downstream as x, and the slope of the second wall panel near any point upstream as y, the second wall panel satisfies x being 0.05 to 0.4, y being 0.01 to 0.15, and y being not greater than x.
7. The exhaust device according to claim 1, characterized in that: Define the longest vertical distance between the first wall plate and the second wall plate as A, the shortest vertical distance as a, and the exhaust device satisfies a <A<4a。 8. The exhaust device according to claim 7, characterized in that: Define the width of the air outlet in the length direction of the first wall plate as b, the maximum vertical height of the air guide plate as c, and the exhaust device meets 0.15A <b<0.75A、0.2a<b<0.95a、0.5b<c<A。 9. A tape-casting drying and curing device, characterized in that: The casting drying and curing equipment comprises the exhaust device according to any one of claims 1 to 8.