Air floating roller for coating

Abstract

The utility model discloses an air floating roller for coating, which relates to the technical field of coating and comprises a roller body, a plurality of air outlet holes are arranged on the radial surface of the roller body, and the air outlet holes are used for air flow ejection. And the two shielding plates are both attached to the radial surface of the roller body in a sliding mode, the sliding directions of the two shielding plates are both parallel to the axis direction of the roller body, and the two shielding plates are both used for shielding part of the air outlet holes so that airflow sprayed out of the other part of the air outlet holes between the two shielding plates can be used for supporting the base material. According to the air floating roller for coating, the effective working length is adjusted through the two slidable baffle plates, so that the effective working length of the air floating roller can be correspondingly adjusted according to the width of a base material, and further the effective working length of the air floating roller can adapt to the base materials with different widths, so that the waste of airflow is avoided, and the working efficiency is improved. The vibration of the base material caused by excessive airflow is also avoided, and the coating precision is favorably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating, in particular to an air floating roller used for coating. Background Art

[0002] An air float roller is a special roller used in the coating industry to support and transport substrates (such as films). Its operating principle is to eject air from the roller surface, forming an air cushion. This allows the substrate to float on the air cushion during movement, rather than directly contacting the roller surface. This not only reduces friction between the substrate and the roller, thereby protecting the substrate surface, but also improves coating quality. The effective working length of an air float roller is a key parameter. It refers to the length of the area along the roller axis that provides uniform airflow support.

[0003] In the prior art, the effective working length of the air flotation roller is fixed after leaving the factory, making it impossible to adjust the effective working length of the air flotation roller accordingly according to the width of the substrate. When the width of the substrate is much smaller than the effective working length of the air flotation roller, not only will it lead to waste of airflow, but excessive airflow will also cause vibration of the substrate, which is not conducive to improving the coating accuracy. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an air flotation roller for coating, which can help improve the coating accuracy.

[0005] The air floatation roller for coating according to an embodiment of the utility model comprises:

[0006] A roller body, wherein a plurality of air outlet holes are opened on the radial surface of the roller body, and the air outlet holes are used for ejecting air;

[0007] Two shielding plates, both of which can be slidably attached to the radial surface of the roller body, the sliding directions of the two shielding plates are parallel to the axial direction of the roller body, and the two shielding plates are used to block part of the air outlet holes so that the airflow ejected from the other part of the air outlet holes between the two shielding plates is used to support the substrate.

[0008] It has at least the following beneficial effects:

[0009] When it is necessary to adjust the effective working length of the air flotation roller used for coating according to the width of the substrate, the operator can drive the two shielding plates to move in a direction parallel to the axis of the roller body, so that the two shielding plates move closer to or farther away from each other, so that the spacing between the two shielding plates can correspond to the width of the substrate. The two shielding plates can block some of the air outlet holes on the radial surface of the roller body. The blocked air outlet holes cannot allow air to be ejected, while the other part of the air outlet holes between the two shielding plates are not blocked, so the other part of the air outlet holes between the two shielding plates can allow air to be ejected, and the ejected air flow can support the substrate. It can be seen from this that in this embodiment of the utility model, the area with air outlet holes between the two shielding plates is the effective working area of ​​the air flotation roller, and the length of the area between the two shielding plates is the effective working length of the air flotation roller. The air flotation roller used for coating adjusts its effective working length through two sliding baffles, so that the effective working length of the air flotation roller can be adjusted accordingly according to the width of the substrate, thereby making the effective working length of the air flotation roller adaptable to substrates of different widths, which not only avoids the waste of airflow, but also avoids the vibration of the substrate caused by excessive airflow, which is conducive to improving the coating accuracy.

[0010] According to the air flotation roller for coating according to the embodiment of the present invention, a guide plate is provided on the baffle plate, the length direction of the guide plate is parallel to the axial direction of the roller body, a guide groove is opened on the radial surface of the roller body, the length direction of the guide groove is parallel to the axial direction of the roller body, and the guide plate extends into the guide groove so that the baffle plate can slide along the axial direction of the roller body.

[0011] According to an embodiment of the present invention, the air floatation roller for coating further includes two fixing components, and the two shielding plates can be fixed on the radial surface of the roller body respectively through the two fixing components.

[0012] According to the air flotation roller for coating in an embodiment of the present invention, the fixing assembly includes a magnetic member, which is arranged on the baffle plate and is used to magnetically attract the roller body so that the baffle plate can be fixed on the radial surface of the roller body through the magnetic member.

[0013] According to the air flotation roller for coating according to the embodiment of the present invention, the fixing assembly includes a T-bolt and a nut, a T-slot is provided on the radial surface of the roller body, the length direction of the T-slot is parallel to the axial direction of the roller body, a matching hole is provided on the baffle plate, the large end of the T-bolt is provided in the T-slot, the threaded end of the T-bolt extends from the T-slot and is passed through the matching hole, and the nut is tightened to fit with the threaded end of the T-bolt to fix the baffle plate on the radial surface of the roller body.

[0014] According to the air flotation roller for coating according to an embodiment of the present invention, a length scale is provided on the radial surface of the roller body, and the length scale extends along the axial direction of the roller body. Both of the two shielding plates are provided with indicator arrows, and the two indicator arrows are used to cooperate with the length scale to indicate the length of the area between the two shielding plates in the axial direction of the roller body.

[0015] According to the embodiment of the present invention, the air flotation roller for coating has an air outlet area on the radial surface of the roller body, the projection of the air outlet area in the axial direction of the roller body is an arc with an arc center angle of α, and the multiple air outlet holes are all arranged in the air outlet area, and the projection of the baffle in the axial direction of the roller body is a fan ring with an arc center angle of β, wherein β is greater than α.

[0016] According to the air floatation roller for coating in the embodiment of the present utility model, the shielding plate is sealedly connected to the radial surface of the roller body.

[0017] According to the air flotation roller for coating in an embodiment of the present invention, an air chamber is provided on the roller body, an extension direction of the air chamber is parallel to the axial direction of the roller body, and the plurality of air outlet holes are all connected to the air chamber.

[0018] According to the air floatation roller for coating according to an embodiment of the present invention, a plurality of air outlet holes are arrayed on the radial surface of the roller body.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic structural diagram of an air floatation roller used for coating according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic structural diagram of another state of the air flotation roller used for coating according to an embodiment of the present utility model;

[0023] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0024] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0025] Figure 5 This is a schematic structural diagram of a roller body in an air flotation roller used for coating according to an embodiment of the utility model;

[0026] Figure 6 This is a cross-sectional schematic diagram of a roller body and a shielding plate in an air floatation roller used for coating according to an embodiment of the utility model;

[0027] Figure 7 This is a schematic diagram of the axial projection of the air outlet area on the roller body of the air floatation roller used for coating in an embodiment of the utility model;

[0028] Figure 8 This is a schematic structural diagram of a shielding plate in an air floatation roller used for coating according to an embodiment of the utility model;

[0029] Reference numerals:

[0030] Roller body 100; air chamber 110; air outlet 120; guide groove 130; T-slot 140; length scale 150; end cap 160; end shaft 161; adapter tube 162;

[0031] Shielding plate 200 ; guide plate 210 ; T-bolt 220 ; nut 230 . DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, 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. They are only for the convenience of describing the present invention 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. Therefore, they cannot be understood as limitations on the present invention.

[0034] In the description of this utility model, "a plurality" means more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting 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 the present invention based on the specific content of the technical solution.

[0036] refer to Figures 1 to 3 The air float roller for coating of the embodiment of the utility model comprises:

[0037] The roller body 100 has a plurality of air outlet holes 120 on its radial surface, and the air outlet holes 120 are used for ejecting air;

[0038] There are two baffles 200, both of which can be slidably fitted on the radial surface of the roller body 100, and the sliding directions of the two baffles 200 are parallel to the axial direction of the roller body 100. The two baffles 200 are used to block part of the air outlet holes 120 so that the air flow ejected from the other part of the air outlet holes 120 between the two baffles 200 is used to support the substrate.

[0039] It is understood that when the effective working length of the coating air flotation roller needs to be adjusted based on the width of the substrate, the operator can drive the two shielding plates 200 to move in a direction parallel to the axis of the roller body 100, so that the two shielding plates 200 move closer to or farther from each other, so that the spacing between the two shielding plates 200 corresponds to the width of the substrate. The two shielding plates 200 can block a portion of the air outlet holes 120 on the radial surface of the roller body 100, preventing air from being ejected from these blocked air outlet holes 120. However, the remaining air outlet holes 120 between the two shielding plates 200 are not blocked, so air can be ejected from these remaining air outlet holes 120, and the ejected air can support the substrate. Therefore, in this embodiment of the present invention, the area between the two shielding plates 200 containing the air outlet holes 120 is the effective working area of ​​the air flotation roller, and the length of the area between the two shielding plates 200 is the effective working length of the air flotation roller. The air flotation roller used for coating adjusts its effective working length through two sliding baffles 200, so that the effective working length of the air flotation roller can be adjusted accordingly according to the width of the substrate, thereby making the effective working length of the air flotation roller adaptable to substrates of different widths, which not only avoids the waste of airflow, but also avoids the vibration of the substrate caused by excessive airflow, which is beneficial to improving the accuracy of coating.

[0040] refer to Figures 5 to 8 The roller body 100 has an air outlet area on its radial surface. The length of the air outlet area is parallel to the axis of the roller body 100. The projection of the air outlet area in the axis direction of the roller body 100 is an arc with an arc center angle α. Multiple air outlet holes 120 are all provided in the air outlet area. The projection of the shielding plate 200 in the axis direction of the roller body 100 is a fan ring with an arc center angle β, where β is greater than α. For the convenience of explanation, Figure 5 The shaded area S in the figure is the outlet area. It is understood that when β is greater than α, the shielding plate 200 can completely block the outlet holes 120 on both sides of the length direction of the outlet area. Specifically, α is equal to 150° and β is equal to 160°. Figure 5 and Figure 7The line connecting the midpoint of the arc projection of the air outlet area S along the axis of the roller body 100 and the center of the roller body 100 is defined as L1, and the line connecting the midpoint of the fan ring projection of the shielding plate 200 along the axis of the roller body 100 and the center of the roller body 100 is defined as L2. In the embodiment of the present invention, L2 coincides with L1.

[0041] refer to Figure 2 、 Figure 3 and Figure 8 The shielding plate 200 is provided with a guide plate 210, the length direction of which is parallel to the axis direction of the roller body 100. A guide groove 130 is provided on the radial surface of the roller body 100, the length direction of which is parallel to the axis direction of the roller body 100. The guide plate 210 extends into the guide groove 130, so that the shielding plate 200 can slide along the axis direction of the roller body 100. It can be understood that the guide plate 210 on the shielding plate 200 is inserted into the guide groove 130 on the radial surface of the roller body 100, and the inner wall of the guide groove 130 guides the movement of the guide plate 210 and the shielding plate 200, so that the shielding plate 200 can move along the axis direction of the roller body 100. Specifically, in this embodiment of the present invention, the length of the shielding plate 200 is parallel to the axis of the roller body 100. Guide plates 210 are provided at both ends of the shielding plate 200 in the width direction. Two guide grooves 130 are defined on the radial surface of the roller body 100. Both guide grooves 130 extend parallel to the axis of the roller body 100 and are located on either side of the length of the air outlet region. The two guide plates 210 extend into each of the two guide grooves 130. Providing two guide plates 210 on the shielding plate 200 ensures smoother movement of the shielding plate 200. Furthermore, the two guide plates 210 act like a snap-fit, allowing the shielding plate 200 to be snap-fitted to the radial surface of the roller body 100, effectively preventing the shielding plate 200 from falling off the roller body 100.

[0042] refer to Figure 2 and Figure 3 The roller body 100 is provided with a length scale 150 on its radial surface, extending along the axis of the roller body 100. Both shielding plates 200 are provided with indicator arrows, which cooperate with the length scale 150 to indicate the length of the area between the two shielding plates 200 along the axis of the roller body 100. It is understood that while moving the two shielding plates 200, the operator can calculate the length of the area between the two shielding plates 200 using the length scale 150 indicated by the indicator arrows on the two shielding plates 200. The length of the area between the two shielding plates 200 is the current effective working length of the air flotation roller, thereby improving the operator's convenience in adjusting the effective working length of the air flotation roller.

[0043] refer to Figure 3 、 Figure 4 and Figure 6 The air flotation roller used for coating also includes two fixing assemblies, each of which can secure two shielding plates 200 to the radial surface of the roller body 100. It is understood that after the operator has adjusted the positions of the two shielding plates 200, that is, after adjusting the effective working length of the air flotation roller, the operator can manipulate the two fixing assemblies to secure both shielding plates 200 to the radial surface of the roller body 100. This prevents the shielding plates 200 from shaking during the coating process, thereby ensuring coating accuracy.

[0044] refer to Figure 2 、 Figure 4 and Figure 6 As one embodiment of the present invention, the fixing assembly includes a T-bolt 220 and a nut 230. A T-slot 140 is defined on the radial surface of the roller body 100. The length of the T-slot 140 is parallel to the axis of the roller body 100. A mating hole is defined on the shielding plate 200. The large end of the T-bolt 220 is positioned within the T-slot 140. The threaded end of the T-bolt 220 extends from the T-slot 140 and passes through the mating hole. The nut 230 is tightened and engaged with the threaded end of the T-bolt 220 to secure the shielding plate 200 to the radial surface of the roller body 100. It is understood that the large end of the T-bolt 220 faces the interior of the roller body 100, as does the large end of the T-slot 140. The nut 230 is threadedly engaged with the threaded end of the T-bolt 220. After the effective working length of the air float roller is adjusted, the operator can tighten the nut 230 so that the nut 230 presses against the baffle plate 200, and the large head of the T-bolt 220 presses against the inner wall of the T-slot 140, thereby fixing the baffle plate 200 on the radial surface of the roller body 100. When the operator needs to move the baffle plate 200, he only needs to loosen the nut 230 to move the baffle plate 200. Specifically, the fixing assembly includes two T-bolts 220 and two nuts 230. There are two matching holes on the baffle plate 200. The corresponding connection method and matching relationship will not be further described here. The projection point of the T-slot 140 in the axial direction of the roller body 100 coincides with the midpoint of the arc projection of the air outlet area in the axial direction of the roller body 100. In the embodiment of the present invention, there are two sections of T-slots 140, which are respectively arranged on both sides of the length direction of the air outlet area. The two sections of T-slots 140 are respectively matched with two baffles 200, which will not be further described here.

[0045] As another embodiment of the present invention, the fixing assembly includes a magnetic member, which is provided on the shielding plate 200. The magnetic member is used to magnetically attract the roller body 100 so that the shielding plate 200 can be fixed to the radial surface of the roller body 100 through the magnetic member. It is understandable that the magnetic member on the shielding plate 200 can continuously magnetically attract the roller body 100. When the shielding plate 200 does not need to be moved, the shielding plate 200 is magnetically fixed to the radial surface of the roller body 100 through the magnetic member. When the shielding plate 200 needs to be moved, the operator can apply a certain force to the shielding plate 200 so that the shielding plate 200 can move. After the operator stops moving the shielding plate 200, the shielding plate 200 is magnetically fixed to the roller body 100 through the magnetic member.

[0046] As one embodiment of the present invention, the shielding plate 200 is sealed against the radial surface of the roller body 100. As will be appreciated, this sealed connection effectively prevents airflow from escaping through the gap between the shielding plate 200 and the radial surface of the roller body 100, ensuring the stability of the air pressure in the air flotation roller. This sealed connection between the shielding plate 200 and the radial surface of the roller body 100 is a common connection method and will not be further described here.

[0047] Specifically, the roller body 100 is provided with an air chamber 110 extending parallel to the axis of the roller body 100. Multiple air outlets 120 are connected to the air chamber 110 and are arrayed on the radial surface of the roller body 100. The air floatation roller also includes two end caps 160, which are detachably connected to the roller body 100 at either end in the axial direction. Each end cap 160 is provided with an end shaft 161, which is used to connect to the coating equipment frame, thereby securing the air floatation roller to the coating equipment frame. The air floatation roller for coating also includes a transfer tube 162, which is provided on one of the end caps 160. One end of the transfer tube 162 is connected to the air chamber 110, and the other end of the transfer tube 162 is connected to an air pump. Gas generated by the air pump is fed into the air chamber 110 through the transfer tube 162 and ejected from the multiple air outlets 120, thereby supporting the substrate.

[0048] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An air float roller for coating, characterized in that: include: A roller body, wherein a plurality of air outlet holes are opened on the radial surface of the roller body, and the air outlet holes are used for ejecting air; Two shielding plates, both of which can be slidably attached to the radial surface of the roller body, the sliding directions of the two shielding plates are parallel to the axial direction of the roller body, and the two shielding plates are used to block part of the air outlet holes so that the airflow ejected from the other part of the air outlet holes between the two shielding plates is used to support the substrate.

2. The air floatation roller for coating according to claim 1, characterized in that: A guide plate is provided on the shielding plate, the length direction of the guide plate is parallel to the axial direction of the roller body, a guide groove is provided on the radial surface of the roller body, the length direction of the guide groove is parallel to the axial direction of the roller body, and the guide plate extends into the guide groove so that the shielding plate can slide along the axial direction of the roller body.

3. The air floatation roller for coating according to claim 1, characterized in that: It also includes two fixing assemblies, and the two shielding plates can be fixed on the radial surface of the roller body respectively through the two fixing assemblies.

4. The air floatation roller for coating according to claim 3, characterized in that: The fixing assembly includes a magnetic member, which is provided on the shielding plate and is used to magnetically attract the roller body so that the shielding plate can be fixed on the radial surface of the roller body through the magnetic member.

5. The air floatation roller for coating according to claim 3, characterized in that: The fixing assembly includes a T-shaped bolt and a nut. A T-shaped slot is provided on the radial surface of the roller body. The length direction of the T-shaped slot is parallel to the axial direction of the roller body. A matching hole is provided on the baffle plate. The large end of the T-shaped bolt is provided in the T-shaped slot. The threaded end of the T-shaped bolt extends from the T-shaped slot and passes through the matching hole. The nut is tightened to fit with the threaded end of the T-shaped bolt to fix the baffle plate on the radial surface of the roller body.

6. The air floatation roller for coating according to claim 1, characterized in that: A length scale is provided on the radial surface of the roller body, and the length scale extends along the axial direction of the roller body. Both of the two shielding plates are provided with indicator arrows, and the two indicator arrows are used to cooperate with the length scale to indicate the length of the area between the two shielding plates in the axial direction of the roller body.

7. The air floatation roller for coating according to claim 1, characterized in that: The roller body has an air outlet area on its radial surface, and the projection of the air outlet area in the axial direction of the roller body is an arc with an arc center angle of α. The multiple air outlet holes are arranged in the air outlet area, and the projection of the baffle in the axial direction of the roller body is a fan ring with an arc center angle of β, wherein β is greater than α.

8. The air floatation roller for coating according to claim 1, characterized in that: The shielding plate is sealed to the radial surface of the roller body.

9. The air floatation roller for coating according to claim 1, characterized in that: An air chamber is provided on the roller body, the extension direction of the air chamber is parallel to the axial direction of the roller body, and the plurality of air outlet holes are all connected to the air chamber.

10. The air floatation roller for coating according to claim 1, characterized in that: A plurality of air outlet holes are arrayed on the radial surface of the roller body.

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