CN218251141U - Knife coating device and coating machine with same - Google Patents
Knife coating device and coating machine with same Download PDFInfo
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- CN218251141U CN218251141U CN202221730988.3U CN202221730988U CN218251141U CN 218251141 U CN218251141 U CN 218251141U CN 202221730988 U CN202221730988 U CN 202221730988U CN 218251141 U CN218251141 U CN 218251141U
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Abstract
The utility model relates to a knife coating device and have coating machine of this knife coating device, knife coating device includes: the feeding box is provided with an accommodating cavity and is used for accommodating slurry; the opening of the accommodating cavity faces the coating roller so that the coating roller can be dipped with the slurry when rotating; the scraper and the surface of the coating roller form a gap; the rotation directions of the cloth pressing roller and the coating roller are opposite, a base material is arranged between the cloth pressing roller and the coating roller, and the cloth pressing roller is used for driving the base material to move together; the scraper is positioned between the feed box and the cloth pressing roller along the rotation direction of the coating roller; and the end part of the scraper is provided with a convex part, and the convex direction faces the coating roller. When the blade coating device works, the cloth pressing roller and the coating roller rotate, and the sizing agent on the coating roller can be transferred to the substrate. The bulge part enables the gap between the end part of the scraper and the coating roll to be smaller than the gap between the middle part of the scraper and the coating roll, so that the thickness of slurry at the two ends of the base material is smaller than that of the slurry in the middle part of the base material, and the base material is prevented from cracking during rolling.
Description
Technical Field
The utility model relates to a coating machine technical field especially relates to knife coating device and have this knife coating device's coating machine.
Background
The coating machine is mainly used for the surface coating process production of films, paper and the like, and is used for coating a layer of slurry with a specific function on a coiled base material, drying and rolling. However, after the coater is used for a long time, the thickness of the slurry coated on the middle portion of the substrate is smaller than that of the slurry coated on the two end portions of the substrate, and after the coater is dried and rolled, the thickness of the two end portions is thicker and the thickness of the middle portion is thinner. Along with the gradual increase of the roll diameter, the roll diameter of two tip is greater than the roll diameter of middle part, then causes two tip to break like this, produces the crack for whole roll finished product is scrapped, wastes material and resource.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide a blade coating device and a coating machine having the same, aiming at the problems that the thickness of the slurry coated on the middle part of the substrate is smaller than that of the slurry coated on the two end parts of the substrate, and after drying and rolling, the roll diameter of the two end parts is larger than that of the middle part, so that the two end parts are broken, cracks are generated, the whole roll of finished products are scrapped, and materials and resources are wasted.
An embodiment of this application provides a knife coating device, and the knife coating device includes:
the feeding box is used for being installed on the coating machine body, the feeding box is provided with an accommodating cavity, and slurry is placed in the accommodating cavity;
the coating roll is used for being installed on the coating machine body and is in rotating connection with the coating machine body, and the opening of the containing cavity faces the coating roll so that slurry can be taken out when the coating roll rotates;
the scraper is arranged on the coating machine body and forms a gap with the surface of the coating roller;
the cloth pressing roller is used for being installed on the coating machine body and is in rotating connection with the coating machine body, the rotating directions of the cloth pressing roller and the coating roller are opposite, a base material is arranged between the cloth pressing roller and the coating roller, and the cloth pressing roller is used for driving the base material to move together; the scraper is positioned between the feed box and the cloth pressing roller along the rotation direction of the coating roller; and
and the two ends of the scraper are respectively provided with a bulge, and the projecting direction of the bulge faces the coating roller.
Above-mentioned knife coating device is in the course of the work because the coating roll is installed in the coating machine body to rotate with the coating machine body and be connected, the feeding box is installed in the coating machine body, and the feeding box has been seted up and has been held the chamber, holds intracavity portion and has placed thick liquids, holds the opening in chamber and towards the coating roll, thereby when the coating roll rotates for the coating machine body, the surface of coating roll can be stained with and get the thick liquids that hold the intracavity, and then carries the thick liquids that are stained with and get and rotate jointly. And the cloth pressing roller is arranged on the coating machine body and is rotationally connected with the coating machine body, the rotating directions of the cloth pressing roller and the coating roller are opposite, the base material is positioned between the cloth pressing roller and the coating roller, and the cloth pressing roller is used for driving the base material to rotate together, so that when the cloth pressing roller and the coating roller rotate, the slurry carried on the coating roller can be transferred to one side of the base material, which is far away from the cloth pressing roller, and the slurry is coated on the base material.
Because the scraper is positioned between the feeding box and the cloth pressing roller along the rotation direction of the coating roller, the coating roller moves to the scraper and then moves to the cloth pressing roller when carrying the stained slurry to rotate together. When the coating roller carries the slurry taken by the dipping to move to the scraper together, the scraper can scrape redundant slurry, so that the thickness of the slurry on the coating roller is the thickness of a gap formed between the scraper and the surface of the coating roller. And because the two ends of the scraper are respectively provided with the convex parts, and the convex directions of the convex parts face the coating roll, the gap between the two ends of the scraper and the coating roll is the size of the convex parts from the surface of the coating roll, and the gap between the middle part of the scraper and the coating roll is still the size of the scraper from the surface of the coating roll, namely the gap between the two ends of the scraper and the coating roll is smaller than the gap between the middle part of the scraper and the coating roll, when the scraper scrapes redundant slurry, the thickness of the slurry at the two ends of the coating roll is smaller than the thickness of the slurry at the middle part of the coating roll. When the coating roller carries the slurry stained with to move to the cloth pressing roller together, the thickness of the slurry transferred to the two end parts of the base material is smaller than that of the slurry transferred to the middle part of the base material, so that the phenomenon that the thickness of the slurry coated in the middle part of the base material is smaller than that of the slurry coated on the two end parts of the base material after the coating machine is used for a long time is avoided, and the base material is prevented from being broken during rolling.
In one embodiment, the protrusion protrudes from the scraper by 30 μm to 40 μm.
In one embodiment, the projections have a dimension in the axial direction of the coating roll of 1cm to 3cm.
In one embodiment, the protruding portion and the scraper are of an integrated structure.
In one embodiment, the side of the projection opposite the applicator roll is an arcuate surface.
In one embodiment, the boss is a shim.
In one embodiment, the scraper comprises a scraper roller and a scraping part, the scraper roller and the scraping part are of an integrated structure, the scraper roller is used for being installed on the coating machine body, the scraping part is provided with an arc-shaped surface, and the arc-shaped surface is used for scraping off slurry larger than a gap.
In one embodiment, the dimension of the feed box in the axial direction of the coating roll is smaller than the dimension of the coating roll in the axial direction thereof.
In one embodiment, the projections are 1mm to 2mm in size from the edge of the feed magazine.
The embodiment of the application also provides a coating machine, which comprises a coating machine body and the blade coating device in any embodiment, wherein the blade coating device is connected with the coating machine body.
Drawings
FIG. 1 is a schematic view of a blade coating apparatus according to an embodiment;
FIG. 2 is a schematic view showing the connection relationship between the doctor blade, the coating roll and the feed box in FIG. 1.
Description of the reference numerals:
a blade coating device 100;
a feed cassette 110; a housing cavity 101;
a coating roll 120;
a scraper 130; a doctor roll 131; a scraping section 132;
a cloth pressing roller 140;
a boss 150;
a substrate 200.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.
Referring to fig. 1 and fig. 2, an embodiment of the present application provides a doctor blade apparatus 100, where the doctor blade apparatus 100 includes a feeding box 110, an applying roller 120, a doctor blade 130, a cloth pressing roller 140, and a protrusion 150.
The feed box 110 is used for being mounted on the coater body, the feed box 110 is provided with a containing cavity 101, and the inside of the containing cavity 101 is used for placing slurry. The coating roller 120 is used for being mounted on the coater body and is rotatably connected with the coater body, and the opening of the accommodating cavity 101 faces the coating roller 120, so that slurry can be taken out when the coating roller 120 rotates. The doctor blade 130 is configured to be mounted to the coater body and forms a gap with the surface of the coating roll 120. The cloth pressing roller 140 is used for being mounted on the coating machine body and is connected with the coating machine body in a rotating mode, the rotating directions of the cloth pressing roller 140 and the coating roller 120 are opposite, the base material 200 is arranged between the cloth pressing roller 140 and the coating roller 120, and the cloth pressing roller 140 is used for driving the base material 200 to move together. The doctor blade 130 is located between the feed magazine 110 and the cloth press roll 140 in the direction of rotation of the applicator roll 120. Both end portions of the doctor blade 130 are provided with protrusions 150, and the protruding direction of the protrusions 150 is directed toward the coating roll 120.
Above-mentioned knife coating device 100 is in the course of the work, because coating roll 120 installs in the coating machine body to rotate with the coating machine body and be connected, feed box 110 installs in the coating machine body, feed box 110 has been seted up and has been held chamber 101, hold the inside thick liquids that has placed of chamber 101, the opening that holds chamber 101 is towards coating roll 120, thereby when coating roll 120 rotated for the coating machine body, coating roll 120's surface can be stained with and get the thick liquids that hold in the chamber 101, and then carry the thick liquids that are stained with and get and rotate jointly. And because the cloth pressing roll 140 is mounted on the coater body and is rotationally connected with the coater body, the rotation directions of the cloth pressing roll 140 and the coating roll 120 are opposite, the substrate 200 is located between the cloth pressing roll 140 and the coating roll 120, and the cloth pressing roll 140 is used for driving the substrate 200 to rotate together, so that when the cloth pressing roll 140 and the coating roll 120 rotate, the slurry carried on the coating roll 120 is transferred to the side of the substrate 200 away from the cloth pressing roll 140, thereby coating the slurry on the substrate 200.
Because the doctor blade 130 is located between the feeding box 110 and the cloth pressing roller 140 along the rotation direction of the coating roller 120, the coating roller 120 moves to the doctor blade 130 and then moves to the cloth pressing roller 140 when carrying the slurry to rotate together. When the coating roller 120 carries the stained slurry to move together to the scraper 130, the scraper 130 can scrape off the excessive slurry, so that the thickness of the slurry on the coating roller 120 is the thickness of the gap formed between the scraper 130 and the surface of the coating roller 120. Since the two ends of the doctor blade 130 are respectively provided with the convex portions 150, and the convex direction of the convex portions 150 faces the coating roll 120, the gap between the two ends of the doctor blade 130 and the coating roll 120 is the dimension of the convex portions 150 from the surface of the coating roll 120, and the gap between the middle of the doctor blade 130 and the coating roll 120 is still the dimension of the doctor blade 130 from the surface of the coating roll 120, that is, the gap between the two ends of the doctor blade 130 and the coating roll 120 is smaller than the gap between the middle of the doctor blade 130 and the coating roll 120, therefore, when the doctor blade 130 scrapes excessive slurry, the thickness of the slurry at the two ends of the coating roll 120 is also smaller than the thickness of the slurry at the middle of the coating roll 120. When the coating roller 120 carries the stained slurry to move to the cloth pressing roller 140 together, the thickness of the slurry transferred to the two end parts of the base material 200 is smaller than that of the slurry transferred to the middle part of the base material 200, so that the phenomenon that the thickness of the slurry coated on the middle part of the base material 200 is smaller than that of the slurry coated on the two end parts of the base material 200 after the coating machine is used for a long time is avoided, and the base material 200 is prevented from being broken when being rolled.
In the present embodiment, the substrate 200 is an aluminum foil.
In other embodiments, the substrate may be paper, film, or the like.
In one embodiment, the protrusion 150 protrudes from the scraper 130 by a size of 30 μm to 40 μm.
In one embodiment, the projections 150 have a dimension in the axial direction of the applicator roll 120 of 1cm to 3cm.
In an embodiment, the protruding portion 150 and the scraper 130 are integrally formed, so that the connection between the protruding portion 150 and the scraper 130 is more stable and reliable.
In other embodiments, the protrusion 150 and the scraper 130 may be formed separately and then fixedly connected.
Referring to fig. 1, in an embodiment, a side of the protrusion 150 opposite to the coating roll 120 is an arc-shaped surface, so that the arc-shaped surface scrapes off the slurry at two ends of the coating roll 120, and a scraping position and an un-scraping position of the slurry carried on the surface of the coating roll 120 form a radian, and when the substrate 200 is dried and rolled, the arc-shaped surface can make the roll more fit.
In the present embodiment, the protrusion 150 is a gasket.
In other embodiments, the protrusion 150 may be another protrusion that can protrude from the scraper 130.
Referring to fig. 1, in an embodiment, the scraper 130 includes a scraper roller 131 and a scraper portion 132, the scraper roller 131 and the scraper portion 132 are integrally formed, the scraper roller 131 is configured to be mounted on the coater body, and the scraper portion 132 has an arc-shaped surface configured to scrape off slurry larger than the gap.
Specifically, because material scraping portion 132 has the arcwall face to when the thick liquids that the coating roll 120 surface carried got into the clearance department on arcwall face and coating roll 120 surface, the arc department of arcwall face was used for scraping unnecessary thick liquids, realizes scraping the purpose of unnecessary thick liquids, and after finishing the coating, the arcwall face was also cleaner more easily, was difficult for piling up thick liquids.
In one embodiment, the size of the feed box 110 along the axial direction of the coating roller 120 is smaller than that of the coating roller 120 along the axial direction thereof, so that the size of the feed box 110 along the axial direction of the coating roller 120 is the size of the slurry on the coating roller 120 along the axial direction thereof, and the size of the slurry is controlled by the size of the feed box 110.
In one embodiment, projections 150 are sized 1mm to 2mm from the edge of magazine 110.
An embodiment of the present application further provides a coater, which includes a coater body and any one of the above-mentioned knife coating devices 100, and the knife coating device 100 is connected to the coater body.
Above-mentioned coating machine during operation, because coating roll 120 installs in the coating machine body to rotate with the coating machine body and be connected, feed box 110 installs in the coating machine body, feed box 110 has seted up and has held chamber 101, hold the inside thick liquids that has placed in chamber 101, the opening that holds chamber 101 is towards coating roll 120, thereby when coating roll 120 rotates for the coating machine body, the surface of coating roll 120 can be stained with and get the thick liquids that hold in the chamber 101, and then carry and be stained with the thick liquids that gets and rotate jointly. And because the cloth pressing roller 140 is mounted on the coater body and is rotationally connected with the coater body, the rotation directions of the cloth pressing roller 140 and the coating roller 120 are opposite, the substrate 200 is located between the cloth pressing roller 140 and the coating roller 120, and the cloth pressing roller 140 is used for driving the substrate 200 to rotate together, so that when the cloth pressing roller 140 and the coating roller 120 rotate, the slurry carried on the coating roller 120 is transferred to the side of the substrate 200 away from the cloth pressing roller 140, and the slurry is coated on the substrate 200.
Because the doctor blade 130 is located between the feeding box 110 and the cloth pressing roller 140 along the rotation direction of the coating roller 120, the coating roller 120 moves to the doctor blade 130 and then moves to the cloth pressing roller 140 when carrying the slurry to rotate together. When the coating roll 120 carries the stained slurry to move to the doctor blade 130 together, the doctor blade 130 can scrape off the excessive slurry, so that the thickness of the slurry on the coating roll 120 is the thickness of the gap formed between the doctor blade 130 and the surface of the coating roll 120. Since the two ends of the doctor blade 130 are respectively provided with the protruding portions 150, and the protruding direction of the protruding portions 150 faces the coating roll 120, the gap between the two ends of the doctor blade 130 and the coating roll 120 is the dimension of the protruding portions 150 from the surface of the coating roll 120, and the gap between the middle of the doctor blade 130 and the coating roll 120 is still the dimension of the doctor blade 130 from the surface of the coating roll 120, that is, the gap between the two ends of the doctor blade 130 and the coating roll 120 is smaller than the gap between the middle of the doctor blade 130 and the coating roll 120, when the doctor blade 130 scrapes off the excessive slurry, the thickness of the slurry at the two ends of the coating roll 120 is also smaller than the thickness of the slurry at the middle of the coating roll 120. When the coating roller 120 carries the stained slurry to move to the cloth pressing roller 140 together, the thickness of the slurry transferred to the two end parts of the base material 200 is smaller than that of the slurry transferred to the middle part of the base material 200, so that the phenomenon that the thickness of the slurry coated on the middle part of the base material 200 is smaller than that of the slurry coated on the two end parts of the base material 200 after the coating machine is used for a long time is avoided, and the base material 200 is prevented from being broken when being rolled.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A blade coating apparatus, comprising:
the feeding box is used for being installed on the coating machine body, an accommodating cavity is formed in the feeding box, and slurry is placed in the accommodating cavity;
the coating roll is used for being installed on the coating machine body and is in rotary connection with the coating machine body, and the opening of the accommodating cavity faces the coating roll so that the slurry can be taken when the coating roll rotates;
the scraper is arranged on the coating machine body and forms a gap with the surface of the coating roller;
the cloth pressing roller is used for being installed on the coating machine body and is in rotating connection with the coating machine body, the rotating directions of the cloth pressing roller and the coating roller are opposite, a base material is arranged between the cloth pressing roller and the coating roller, and the cloth pressing roller is used for driving the base material to move together; the scraper is positioned between the feeding box and the cloth pressing roller along the rotation direction of the coating roller; and
the two ends of the scraper are respectively provided with the protruding parts, and the protruding direction of the protruding parts faces the coating roller.
2. The blade coating apparatus according to claim 1, wherein the protrusion is 30 μm to 40 μm protruding from the blade.
3. The doctor apparatus according to claim 1, characterised in that the raised portion has a dimension in the axial direction of the applicator roll of 1cm-3cm.
4. The blade coating apparatus of claim 1, wherein the raised portion is of unitary construction with the blade.
5. The doctor apparatus according to claim 1, wherein the side of the protrusions opposite the coating roll is curved.
6. The blade coating apparatus of claim 1, wherein the raised portion is a shim.
7. The blade coating device as claimed in claim 1, wherein the scraper comprises a scraper roller and a scraping portion, the scraper roller and the scraping portion are of an integrally formed structure, the scraper roller is used for being mounted on the coater body, the scraping portion is provided with an arc-shaped surface, and the arc-shaped surface is used for scraping off the slurry larger than the gap.
8. The doctor apparatus according to claim 1, characterised in that the dimension of the feed magazine in the direction of the coating roll axis is smaller than the dimension of the coating roll in its direction of the axis.
9. The blade coating apparatus of claim 8, wherein the projections are 1mm-2mm in size from the edge of the feed magazine.
10. A coater comprising a coater body and the blade coating device of any one of claims 1 to 9, wherein the blade coating device is attached to the coater body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221730988.3U CN218251141U (en) | 2022-07-06 | 2022-07-06 | Knife coating device and coating machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221730988.3U CN218251141U (en) | 2022-07-06 | 2022-07-06 | Knife coating device and coating machine with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218251141U true CN218251141U (en) | 2023-01-10 |
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ID=84760532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221730988.3U Active CN218251141U (en) | 2022-07-06 | 2022-07-06 | Knife coating device and coating machine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218251141U (en) |
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2022
- 2022-07-06 CN CN202221730988.3U patent/CN218251141U/en active Active
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