Air floating support device

Abstract

The application discloses a gas float supporting device, which comprises a roller, a first convex part and a second convex part. The roller is provided with a gas cavity, an air inlet and an air outlet hole. The air outlet hole is arranged on the surface of the roller. The air inlet is used for feeding gas, and the air outlet hole is used for discharging gas. The first convex part and the second convex part are both arranged around the outer periphery of the roller along the radial direction of the roller. The first convex part and the second convex part are both convex relative to the roller and are arranged at intervals along the axial direction of the roller. The included angle between the axis of the first convex part and the axis of the roller is an acute angle. The included angle between the axis of the second convex part and the axis of the roller is an acute angle. The first convex part and the second convex part are symmetrically arranged. The gas float supporting device can not only flatten the pole piece, but also does not contact the coated pole piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery manufacturing equipment, in particular to a gas floating supporting device. BACKGROUND

[0002] In the related art, when the pole piece is being conveyed, it will have wavy wrinkles, which will cause uneven coating. Furthermore, the pole piece needs to be continuously conveyed after being coated on both sides. Therefore, the coated surface of the pole piece cannot be touched during conveying. Thus, the pole piece needs to be flattened during conveying, and the coated surface of the pole piece cannot be touched. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the prior art. To this end, the present application provides a gas floating supporting device, which can not only flatten the pole piece, but also not touch the coated pole piece.

[0004] The gas floating supporting device according to the first aspect of the present application comprises:

[0005] The roller is provided with a gas cavity, an air inlet and an air outlet hole, the air outlet hole is arranged on the surface of the roller, the air inlet is used for introducing gas, and the air outlet hole is used for discharging gas;

[0006] The first protruding part and the second protruding part are both circumferentially arranged on the outer periphery of the roller, and are both protruded relative to the roller along the radial direction of the roller, and are both arranged in the axial direction of the roller.

[0007] The angle between the axis of the first protruding part and the axis of the roller is an acute angle, the angle between the axis of the second protruding part and the axis of the roller is an acute angle, and the first protruding part and the second protruding part are symmetrically arranged.

[0008] The gas floating supporting device according to the present application has at least the following beneficial effects: since the angles between the axes of the first protruding part and the second protruding part and the axis of the roller are both acute angles, the symmetric first protruding part and the second protruding part can generate tension in the width direction of the pole piece to flatten the pole piece, and the gas discharged from the air outlet hole blows the coated area of the pole piece, so that the pole piece can be flattened and not touched.

[0009] According to some embodiments of the present application, the angle between the axis of the first protruding part and the axis of the second protruding part is an acute angle.

[0010] The air floating support device according to some embodiments of the present application further comprises a third protruding portion, which surrounds the outer periphery of the roller along the radial direction of the roller, protrudes relative to the roller, is arranged between the first protruding portion and the second protruding portion, and has an axis that is collinear with the axis of the roller.

[0011] The air floating support device according to the second aspect of the present application comprises:

[0012] The roller, the first protruding portion and the second protruding portion are provided with a gas cavity and a gas inlet and a gas outlet hole that communicate with the gas cavity, the gas outlet hole is arranged on the surface of the roller, the gas inlet is used for introducing gas, and the gas outlet hole is used for discharging gas;

[0013] The first protruding portion and the second protruding portion surround the outer periphery of the roller along the radial direction of the roller, protrude relative to the roller, and are arranged at two ends of the roller, respectively.

[0014] The surface of the first protruding portion is provided with a plurality of first inclined grooves, the surface of the second protruding portion is provided with a plurality of second inclined grooves, the angle between the direction in which the opening of the first inclined groove extends and the axial direction of the roller is an acute angle, the angle between the direction in which the opening of the second inclined groove extends and the axial direction of the roller is an acute angle, and the first inclined grooves and the second inclined grooves are symmetrically arranged.

[0015] The air floating support device according to the embodiments of the present application has at least the following beneficial effects: since the angle between the direction in which the opening of the first inclined groove extends and the axial direction of the roller and the angle between the direction in which the opening of the second inclined groove extends and the axial direction of the roller are both acute angles, the first protruding portion and the second protruding portion can generate tension in the width direction of the pole piece to flatten the pole piece, and at the same time, the gas discharged from the gas outlet hole blows the coated area of the pole piece, so that the pole piece can be flattened and at the same time, the pole piece is not in contact with the coated pole piece.

[0016] The air floating support device according to some embodiments of the present application has the angle between the direction in which the opening of the first inclined groove extends and the direction in which the opening of the second inclined groove extends is an acute angle.

[0017] The air floating support device according to some embodiments of the present application further comprises an adjusting cylinder, the roller is sleeved outside the adjusting cylinder, the adjusting cylinder is provided with a gas storage cavity and an air outlet hole that communicates with the gas storage cavity, the gas inlet communicates with the gas storage cavity, so that the gas enters from the gas inlet and reaches the gas outlet hole through the air outlet hole, the gas outlet hole is arranged on the surface of the top end of the roller, and the air outlet hole is arranged on the surface of the bottom end of the adjusting cylinder.

[0018] The air floating support device according to the third aspect of the present application comprises a base and a plurality of rollers, the base is provided with a gas cavity, an air inlet and an air outlet, the air outlet is arranged on the surface of the base, and at least part of the rollers protrude from the surface of the base where the air outlet is arranged.

[0019] The rollers are rotationally connected to the base, and the plurality of rollers are arranged as a first roller row and a second roller row, the angle between the axis of the roller in the first roller row and the width direction of the base is an acute angle, and the angle between the axis of the roller in the second roller row and the width direction of the base is an acute angle.

[0020] The air floating support device according to the third aspect of the present application has at least the following beneficial effects: when the pole piece moves on the base, the angle between the axis of the roller and the width direction of the base is an acute angle, so that the plurality of rollers can generate tension in the width direction of the pole piece, and the air outlet can discharge gas to blow the coated area of the pole piece, so that the pole piece can be flattened and can not contact the coated pole piece.

[0021] The air floating support device according to some embodiments of the present application has the following beneficial effects: the angle between the axis of the roller in the first roller row and the axis of the roller in the second roller row is an acute angle.

[0022] The air floating support device according to some embodiments of the present application has the following beneficial effects: the air inlet is arranged at the bottom end of the base, the air outlet is arranged on the surface of the top end of the base, the base comprises a uniform air plate, the uniform air plate has a plurality of uniform air holes, the plurality of uniform air holes are arranged in an array, and the two ends of the uniform air plate are connected to the cavity wall of the gas cavity, so that the gas enters from the air inlet and passes through the uniform air holes to reach the air outlet.

[0023] The air floating support device according to some embodiments of the present application has the following beneficial effects: the uniform air plate has a plurality of uniform air plates arranged in the height direction of the base and spaced apart in the gas cavity.

[0024] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0026] Figure 1 The schematic diagram of the air floating support device according to some embodiments of the present application;

[0027] Figure 2 The schematic diagram of the air floating support device according to some embodiments of the present application;

[0028] Figure 3 schematic view of another embodiment of an air floating support device of some embodiments of the present application;

[0029] Figure 4 schematic view of another embodiment of an air floating support device of some embodiments of the present application; Figure 3 schematic view of another embodiment of an air floating support device of some embodiments of the present application;

[0030] Figure 5 schematic view of another embodiment of an air floating support device of some embodiments of the present application; Figure 4 schematic view of another embodiment of an air floating support device of some embodiments of the present application;

[0031] Figure 6 schematic view of another embodiment of an air floating support device of some embodiments of the present application;

[0032] Figure 7 schematic view of another embodiment of an air floating support device of some embodiments of the present application; Figure 6 schematic view of another embodiment of an air floating support device of some embodiments of the present application;

[0033] Figure 8 schematic view of another embodiment of an air floating support device of some embodiments of the present application; Figure 6 schematic view of another embodiment of an air floating support device of some embodiments of the present application;

[0034] Figure 9 schematic view of another embodiment of an air floating support device of some embodiments of the present application; Figure 6 schematic view of another embodiment of an air floating support device of some embodiments of the present application;

[0035] Figure 10 schematic view of another embodiment of an air floating support device of some embodiments of the present application.

[0036] Reference Signs:

[0037] air floating support device 100, roller 200, air cavity 210, air inlet 220, air outlet 230, first protrusion 300, first inclined groove 301, second protrusion 310, second inclined groove 311, third protrusion 320, adjusting cylinder 400, air storage cavity 410, air outlet 420, base 500, first recess 510, second recess 520, roller 600, first roller column 610, second roller column 620, air uniformizing plate 700, air uniformizing hole 710, pole piece 800, coating area 810, blank area 820. DETAILED DESCRIPTION

[0038] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals are used throughout to designate the same or similar elements or elements having the same or similar functions. The embodiments described below are exemplary only, and are not to be construed as limiting the present application.

[0039] In the description of the present application, it needs to be understood that the orientation description, such as the orientation or position relationship indicated by the upper, lower, front, rear, left, right and the like, is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and cannot be understood as a limitation on the present application.

[0040] In the description of the present application, if the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0041] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0042] In the description of the present application, the description of the reference terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] Please refer to Figure 1 , Figure 2 and Figure 10 In some embodiments, the air floating support device 100 comprises a roller 200, a first protruding part 300 and a second protruding part 310. The roller 200 is provided with a gas cavity 210, an air inlet 220 and an air outlet 230. The air outlet 230 is arranged on the surface of the roller 200. The air inlet 220 is used for introducing gas, and the air outlet 230 is used for discharging gas. The first protruding part 300 and the second protruding part 310 are both annularly arranged on the outer periphery of the roller 200 along the radial direction of the roller 200. The first protruding part 300 and the second protruding part 310 are both protruded relative to the roller 200, and are arranged in the axial direction of the roller 200. The angle between the axis of the first protruding part 300 and the axis of the roller 200 is an acute angle, the angle between the axis of the second protruding part 310 and the axis of the roller 200 is an acute angle, and the first protruding part 300 and the second protruding part 310 are symmetrically arranged.

[0044] Specifically, the axis mentioned in the present application can refer to the axis of the second protruding part 310 and the roller 200, the included angle between the above-mentioned axes, and generally speaking, the two lines intersect to form a maximum angle and a minimum angle, wherein the acute angle mentioned in the present application refers to the minimum angle. Further, since the pole piece 800 is long, the pole piece 800 will be wrinkled in the length direction and the width direction, but since the pole piece 800 is transported and wound by the mechanism in the length direction, the wrinkles can be flattened at the same time during winding, however, in the width direction, it cannot be easily flattened, therefore, since the included angle between the axis of the first protruding part 300 and the second protruding part 310 and the axis of the roller 200 is an acute angle, it can be understood that the first protruding part 300 and the second protruding part 310 are similar to "inclined" arranged on the roller 200, and the symmetrical first protruding part 300 and the second protruding part 310 can generate tension in the width direction of the pole piece 800, that is, the first protruding part 300 and the second protruding part 310 act on the blank area 820 of the pole piece 800 to flatten the pole piece 800.

[0045] Specifically, since the included angle between the axis of the first protruding part 300 and the second protruding part 310 and the axis of the roller 200 is an acute angle, the symmetrical first protruding part 300 and the second protruding part 310 can generate tension in the width direction of the pole piece 800 to flatten the pole piece 800, and at the same time, the gas is discharged from the gas outlet hole 230 to blow the coated area of the pole piece 800, so that the pole piece 800 can be flattened and can not be in contact with the coated pole piece 800.

[0046] It should be noted that the air floating support device 100 of the present application simultaneously flattens and blows the pole piece 800 when working on the pole piece 800, so as to ensure that the pole piece 800 is not wrinkled and the coating area 810 is not disturbed during transportation.

[0047] Further, the gas inlet 220 can be arranged at both ends of the roller 200, and the gas enters from both ends of the roller 200, and the gas is discharged from the gas outlet hole 230 on the surface of the roller 200 to blow the coating area 810 of the pole piece 800 to prevent the surface of the pole piece 800 from being touched. Among them, the gas outlet hole 230 can be a circular gas outlet hole 230, or a square gas outlet hole 230, and the circular gas outlet hole 230 can have multiple, and the square gas outlet hole 230 can have multiple. Further, in order to make the gas more evenly discharged, the gas outlet holes 230 distributed on the roller 200 can be arranged more densely to achieve better results.

[0048] Please refer to Figure 1 and Figure 2In some embodiments, the first protrusions 300 and the second protrusions 310 are each provided in a plurality, and the plurality of first protrusions 300 and the plurality of second protrusions 310 are arranged at intervals along the length direction of the roller 200. Specifically, when the pole piece 800 has a plurality of folds in the width direction, the plurality of first protrusions 300 and the plurality of second protrusions 310 can cooperate with each other to flatten each of the folds.

[0049] Please refer to Figure 1 and Figure 2 In some embodiments, the angle between the axis of the first protrusion 300 and the axis of the second protrusion 310 is an acute angle. Specifically, when the angle between the axis of the first protrusion 300 and the axis of the second protrusion 310 is an acute angle, the first protrusion 300 and the second protrusion 310 are arranged in an "inner eight" or an "outer eight", and the "inner eight" or the "outer eight" design can generate a pulling force in opposite directions on the pole piece 800 by the first protrusion 300 and the second protrusion 310 respectively, so as to flatten the pole piece 800.

[0050] Please refer to Figure 1 and Figure 2 In some embodiments, the air floating support device 100 further comprises a third protrusion 320, the third protrusion 320 is arranged around the outer periphery of the roller 200, and the third protrusion 320 protrudes relative to the roller 200 along the radial direction of the roller 200. The third protrusion 320 is arranged between the first protrusion 300 and the second protrusion 310, and the axis of the third protrusion 320 is collinear with the axis of the roller 200. Specifically, the third protrusion 320 can support the pole piece 800 to prevent the pole piece 800 from collapsing in the middle part. The first protrusion 300 and the second protrusion 310 jointly act on the pole piece 800 to flatten the pole piece 800.

[0051] Please refer to Figure 1 , Figure 2 and Figure 10 In some embodiments, the first protrusion 300 and the second protrusion 310 are rotatably sleeved on the outside of the roller 200. Specifically, when the pole piece 800 is conveyed, the pole piece 800 can be driven to move, so that the blank area 820 of the pole piece 800 can drive the first protrusion 300 and the second protrusion 310 to rotate, and the coating area 810 of the pole piece 800 is blown up by the gas discharged from the gas outlet hole 230 to avoid contact. On the other hand, in addition to the first protrusion 300 and the second protrusion 310 being rotatable, the roller 200 itself can also be rotatable. When the roller 200 rotates, the gas outlet hole 230 can be circumferentially arranged on the surface of the roller 200, and the rotation of the roller 200 can make the gas discharged from the gas outlet hole 230 uniformly blow up the pole piece 800.

[0052] Please refer to Figure 6、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 In some embodiments, the air floating support device 100 comprises a roller 200, a first protruding part 300 and a second protruding part 310. The roller 200 is provided with a gas cavity 210, an air inlet 220 and an air outlet 230. The air inlet 220 is used for introducing gas, and the air outlet 230 is used for discharging gas. The air outlet 230 is arranged on the surface of the roller 200. The first protruding part 300 and the second protruding part 310 are both arranged around the outer periphery of the roller 200 along the radial direction of the roller 200. The first protruding part 300 and the second protruding part 310 are both protruded relative to the roller 200. The first protruding part 300 and the second protruding part 310 are respectively arranged at two ends of the roller 200. The surface of the first protruding part 300 is provided with a plurality of first inclined grooves 301, and the surface of the second protruding part 310 is provided with a plurality of second inclined grooves 311. The angle between the direction in which the opening of the first inclined groove 301 extends and the axial direction of the roller 200 is an acute angle. The angle between the direction in which the opening of the second inclined groove 311 extends and the axial direction of the roller 200 is an acute angle. The first inclined groove 301 and the second inclined groove 311 are symmetrically arranged. Specifically, since the angle between the direction in which the opening of the first inclined groove 301 extends and the axial direction of the roller 200 is an acute angle, and the angle between the direction in which the opening of the second inclined groove 311 extends and the axial direction of the roller 200 is an acute angle, and the first inclined groove 301 and the second inclined groove 311 are symmetrically arranged, the first protruding part 300 and the second protruding part 310 can generate tension in the width direction of the pole piece 800 to flatten the pole piece 800. At the same time, the gas discharged from the air outlet 230 blows the coated area of the pole piece 800, that is, the coating area 810, so that the pole piece 800 can be flattened without contacting the coated pole piece 800.

[0053] Please refer to Figure 6 、 Figure 7 and Figure 8 In some embodiments, the angle between the direction in which the opening of the first inclined groove 301 extends and the direction in which the opening of the second inclined groove 311 extends is an acute angle. Specifically, when the angle between the direction in which the opening of the first inclined groove 301 extends and the direction in which the opening of the second inclined groove 311 extends is an acute angle, the first inclined groove 301 and the second inclined groove 311 are arranged in the shape of “inner eight” or “outer eight”. The design of “inner eight” or “outer eight” can generate opposite pulling forces on the pole piece 800 by the first inclined groove 301 and the second inclined groove 311 respectively, so as to flatten the pole piece 800.

[0054] Please refer to Figure 9In some embodiments, the air floating support device 100 further comprises an adjusting cylinder 400, the roller cylinder 200 is sleeved outside the adjusting cylinder 400, the adjusting cylinder 400 is provided with a gas storage cavity 410 and an air outlet hole 420 communicating with the gas storage cavity 410, the gas inlet hole 220 is communicated with the gas storage cavity 410, so that the gas enters from the gas inlet hole 220 and reaches the gas outlet hole 230 through the air outlet hole 420, wherein the gas outlet hole 230 is arranged on the surface of the top end of the roller cylinder 200, and the air outlet hole 420 is arranged on the surface of the bottom end of the adjusting cylinder 400. Specifically, the adjusting cylinder 400 can make the flow of gas discharged from the gas inlet hole 220 to the gas outlet hole 230 more uniform, thereby reducing the shaking of the coated area 810 of the pole piece 800. In order to make the gas output more uniform, the adjusting cylinder 400 is arranged such that the gas outlet hole 230 is arranged on the surface of the top end of the roller cylinder 200, and the air outlet hole 420 is arranged on the surface of the bottom end of the adjusting cylinder 400. In this way, the paths of the gas on the left and right sides of the cavity of the adjusting cylinder 400 are the same, so that the effect of uniform gas discharge can be achieved.

[0055] Please refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 10 In some embodiments, the air floating support device 100 comprises a base 500 and a plurality of rollers 600, the base 500 is provided with a gas cavity 210, a gas inlet hole 220 and a gas outlet hole 230 communicating with the gas cavity 210, the gas outlet hole 230 is arranged on the surface of the base 500, and at least part of the rollers 600 protruding from the surface of the base 500 where the gas outlet hole 230 is arranged; the rollers 600 are rotationally connected to the base 500, and the plurality of rollers 600 are respectively arranged as a first roller row 610 and a second roller row 620, the angle between the axis of the rollers 600 in the first roller row 610 and the width direction of the base 500 is an acute angle, and the angle between the axis of the rollers 600 in the second roller row 620 and the width direction of the base 500 is an acute angle. Specifically, when the pole piece 800 moves on the base 500, because the angle between the axis of the rollers 600 and the width direction of the base 500 is an acute angle, the plurality of rollers 600 can generate tension in the width direction of the pole piece 800, at the same time, the gas outlet hole 230 can discharge gas to blow up the area of the pole piece 800 after being coated, so that the pole piece 800 can be flattened and can not be in contact with the coated pole piece 800.

[0056] Please refer to Figure 3 、 Figure 4 and Figure 5In some embodiments, the angle between the axis of the rollers 600 in the first row 610 and the axis of the rollers 600 in the second row 620 is an acute angle. Specifically, when the angle between the axis of the rollers 600 in the first row 610 and the axis of the rollers 600 in the second row 620 is an acute angle, the rollers 600 are "inclined" to the width direction of the base 500, and thus the rollers 600 in the first row 610 and the rollers 600 in the second row 620 are arranged in an "inner eight" or an "outer eight", and the "inner eight" or "outer eight" design can generate pulling forces in opposite directions on the pole piece 800 by the rollers 600 in the first row 610 and the rollers 600 in the second row 620, respectively, to flatten the pole piece 800.

[0057] Please refer to Figure 3 , Figure 4 and Figure 5 In some embodiments, the base 500 is provided with a first groove 510 and a second groove 520, the first row 610 is arranged in the first groove 510, and the second row 620 is arranged in the second groove 520. In this way, the plurality of rollers 600 can roll in the first groove 510 and the second groove 520 to flatten the pole piece 800.

[0058] Please refer to Figure 3 , Figure 4 and Figure 5 In some embodiments, the air inlet 220 is arranged at the bottom end of the base 500, the air outlet 230 is arranged on the surface of the top end of the base 500, the base 500 includes a flow uniformizing plate 700, the flow uniformizing plate 700 can uniformize the airflow, the flow uniformizing plate 700 has a plurality of flow uniformizing holes 710, the plurality of flow uniformizing holes 710 are arrayed, and the two ends of the flow uniformizing plate 700 are connected to the cavity wall of the air cavity 210, so that the gas enters from the air inlet 220 and passes through the flow uniformizing holes 710 to reach the air outlet 230. Specifically, the gas can be more uniformly discharged from the air outlet 230 after passing through the flow uniformizing holes 710 of the flow uniformizing plate 700 to blow the coating area 810 of the pole piece 800, and in order to make the gas more uniformly discharged, the diameter of the air outlet 230 and the flow uniformizing holes 710 can be designed to be smaller, and the flow uniformizing holes 710 distributed on the flow uniformizing plate 700 can be arranged more densely to make the airflow uniform, so as to achieve better results.

[0059] Please refer to Figure 3 , Figure 4 and Figure 5In some embodiments, the uniform air plate 700 has a plurality of uniform air plates 700 arranged in the height direction of the base 500. Specifically, in addition to arranging the uniform air holes 710 of the uniform air plate 700 more densely to make the gas more uniformly discharged from the air outlet hole 230, a plurality of uniform air plates 700 can be arranged so that the gas entering from the air inlet hole 220 passes through the plurality of uniform air plates 700. In this way, the gas can more uniformly blow up the pole piece 800, effectively reducing the shaking of the pole piece 800.

[0060] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present application. Furthermore, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. An air floating support device characterized by, The utility model relates to a roller, first convex part and second convex part, the roller is equipped with air cavity and the air inlet and air outlet hole of intercommunication air cavity, the air outlet hole sets up in the surface of the roller, the air inlet is used to enter gas, the air outlet hole is used to discharge gas, the first convex part and the second convex part all surround the outer periphery of the roller, along the radial direction of the roller, the first convex part and the second convex part all protrude relative to the roller, and the first convex part and the second convex part are arranged at two ends of the roller respectively, the surface of the first convex part is provided with a plurality of first inclined grooves, the surface of the second convex part is provided with a plurality of second inclined grooves, the included angle between the direction of the opening of the first inclined groove extending and the axial direction of the roller is an acute angle, the included angle between the direction of the opening of the second inclined groove extending and the axial direction of the roller is an acute angle, and the first inclined groove and the second inclined groove are symmetrically arranged, further including an adjusting cylinder, the roller is sleeved outside the adjusting cylinder, the adjusting cylinder is provided with a gas storage cavity and an air outlet hole communicating with the gas storage cavity, the air inlet is communicated with the gas storage cavity to make the gas enter from the air inlet and reach the air outlet hole through the air outlet hole, wherein the air outlet hole is arranged on the surface of the top end of the roller, the air outlet hole is arranged on the surface of the bottom end of the adjusting cylinder, and the air outlet hole is one. The included angle between the direction of the opening of the first inclined groove extending and the direction of the opening of the second inclined groove extending is an acute angle. ​ ​ ​ 2. The air flotation support device according to claim 1, characterized by ​

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