Air bearings, foils and foil forming equipment

Abstract

The invention discloses an air bearing, a foil and a foil forming device, and relates to the technical field of air bearing production and manufacturing. The air bearing comprises an air bearing body, the air bearing body comprises a top foil, a welding point, a bearing sleeve and a shaft rod, the foil comprises a foil body, the foil body is wrapped and assembled on the outside of the top foil, the bearing sleeve is matched and connected on the outside of the foil body, and the foil forming device comprises a frame, a forming unit, a guide unit and an adjustment unit, the inner end of the frame is provided with an auxiliary unit that cooperates with the forming unit, and the adjustment unit drives the auxiliary unit to move horizontally. The invention ensures that the local thickness of the foil is uniform during the forming process, and corrects when the foil is locally deformed, thereby improving the forming quality of the foil and thus improving the quality of the foil air bearing.

Description

Technical Field

[0001] The invention relates to the technical field of air bearing production and manufacturing, in particular to air bearings, foils and foil forming equipment. Background Art

[0002] An air bearing is a sliding bearing that uses gas (usually air, but it can also be other gases) as a lubricant. Foil air bearings are a common bearing structure, mainly used to support shafts in rotating mechanical equipment. The foil is the core component of the foil air bearing system, which determines the performance and characteristics of the bearing.

[0003] A Chinese patent with application number 2021116077821 discloses a wave foil assembly, a foil dynamic pressure air bearing and a shaft system, wherein the wave foil assembly includes a positioning foil and a plurality of arch wave units; a plurality of positioning grooves are provided on the positioning foil; the arch wave unit includes a first positioning portion and a deformation portion that are connected to each other, the first positioning portion is against the side of the positioning foil facing the bearing sleeve, the deformation portion is arched, the deformation portion is penetrated into the positioning groove, and the two side walls of the positioning groove along the circumference of the positioning foil do not contact the deformation portion. However, in some existing technologies, during the foil forming process, uneven force on the foil will cause uneven foil thickness and local deformation, which will affect the quality of the foil and thus affect the quality of the foil air bearing.

[0004] Furthermore, during the foil forming process, the oxide layer and attached impurities on the metal sheet will fall off due to the extrusion and friction, causing uneven force on the metal sheet and causing local slight deformation. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide an air bearing, a foil and a foil forming device, so that the local thickness of the foil can be ensured to be uniform during the forming process, and local deformation of the foil can be corrected, thereby improving the forming quality of the foil and further improving the quality of the air bearing, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an air bearing, the air bearing being made by using a foil forming device, the air bearing comprising an air bearing body, the air bearing body comprising a top foil, a welding point, a bearing sleeve and a shaft rod, the top foil being wrapped around the outside of the shaft rod, and the welding point being located inside the bearing sleeve.

[0007] The present invention also provides a foil, which is used to make the air bearing as described above. The foil includes a foil body, the foil body is wrapped and assembled on the outside of the top foil, the bearing sleeve is matched with the outside of the foil body, and the opposite ends of the top foil and the foil body are welded at the position of the welding point.

[0008] Furthermore, the foil body is a wave-shaped structure, and the foil body includes a wave bottom and a wave top, the wave bottom is an arc-shaped structure, and the wave top is an "I"-shaped structure.

[0009] The present invention also provides a foil forming device for making the above foil, comprising a frame, a forming unit, a guide unit and an adjustment unit, wherein the inner end of the frame is provided with an auxiliary unit that cooperates with the forming unit, and the adjustment unit drives the auxiliary unit to move horizontally;

[0010] The molding unit comprises a concave pressing roller and a convex pressing roller that cooperate with each other;

[0011] The auxiliary unit comprises a mounting shaft, which is a hollow structure with one end being transparent, a fixing frame being provided at the end of the mounting shaft, an auxiliary roller being rotatably connected to the fixing frame in a ring-shaped arrangement, and an air inlet plug being rotatably connected to the transparent end of the mounting shaft;

[0012] The auxiliary roller is a hollow structure with closed ends, and exhaust holes are evenly spaced on one side of the circumferential surface of the auxiliary roller. Each of the auxiliary rollers is connected to the mounting shaft via an elastic hose.

[0013] The fixed frame is provided with a motor corresponding to the auxiliary roller, and the output shaft of the motor is fixedly connected to the end of the auxiliary roller.

[0014] Furthermore, an opening is provided on one side of the frame, the concave pressure roller corresponds to the opening, a support leg is provided at the bottom of the frame, the molding unit is provided at one end inside the frame, the guide unit is provided at a position corresponding to the molding unit at the top of the frame, the adjustment unit is provided on a side of the frame away from the molding unit, and the end of the auxiliary unit is rotatably connected to the adjustment unit.

[0015] Furthermore, the circumferential surface of the concave pressure roller is provided with arcuate concave surfaces at equal intervals, the circumferential surface of the concave pressure roller is provided with a first pressure surface at equal intervals between two adjacent arcuate concave surfaces, the circumferential surface of the convex pressure roller is provided with arcuate protrusions at equal intervals, and the circumferential surface of the convex pressure roller is provided with a second pressure surface at equal intervals between two adjacent arcuate protrusions, the arcuate concave surfaces and the arcuate protrusions correspond to each other to form the wave bottom, and the arcuate concave surface corresponds to the auxiliary roller, and the first pressure surface and the second pressure surface correspond to each other to form the wave top.

[0016] Furthermore, a driven shaft is fixedly passed through the middle of the concave pressure roller, and a driving shaft is fixedly passed through the middle of the convex pressure roller. The ends of the driven shaft and the driving shaft are rotatably connected to the side of the frame in a linear array. The ends of the driven shaft and the driving shaft are fixedly sleeved with mutually meshing transmission gears. A first power unit is provided on the side of the frame, and the output end of the first power unit is fixedly connected to the end of the driving shaft.

[0017] Furthermore, the guide unit includes a support plate and an arc-shaped guide plate arranged on the top surface of the frame, and both sides of the support plate are rotatably connected to limit rollers. The arc-shaped guide plate is arranged at the bottom of the frame, and one end of the arc-shaped guide plate corresponds to the fitting position between the concave pressure roller and the convex pressure roller.

[0018] Furthermore, the adjustment unit comprises a slide groove, which is symmetrically opened on both sides of the frame, a movable seat is slidably connected in the slide groove, and an electric telescopic mechanism is provided between the end of the movable seat and the end surface of the slide groove.

[0019] Furthermore, both ends of the mounting shaft pass through and are rotatably connected to the movable seats on both sides, a second power unit is provided on the movable seat on one side, an output end of the second power unit is fixedly connected to the closed end of the mounting shaft, the air inlet plug is connected to an external high-pressure air supply system, an electromagnetic valve is provided on the elastic hose, and a locking mechanism for positioning the auxiliary roller is provided on the fixed frame.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. After the metal sheet is press-formed, the present invention rotates the wave bottom 180 degrees after pressing to cooperate with the auxiliary roller, and the second power unit drives the mounting shaft to make the concave pressing roller and the mounting shaft rotate in opposite directions. At this time, the mounting shaft provides a rotational force, and the extrusion force of the auxiliary roller on the arc-shaped concave bottom is greater than the extrusion force of the arc-shaped concave top. Then, the extrusion force of the auxiliary roller on the wave bottom is increased by moving the movable seat toward the concave pressing roller. At the same time, the motor is used to drive the auxiliary roller to rotate forward and reverse to correct the uneven thickness on both sides of the wave bottom.

[0022] 2. Before correcting the corrugated bottom, the present invention makes the mounting shaft and the concave pressure roller rotate synchronously in opposite directions while the metal sheet is wound on the concave pressure roller and continues to rotate. Then, the electric telescopic mechanism is extended to generate a gap between the corrugated bottom and the auxiliary roller when they cooperate. High-pressure gas is introduced into the mounting shaft and discharged into the corrugated bottom through the exhaust hole to discharge the oxide layer and impurities accumulated in the corrugated bottom. At the same time, the auxiliary roller is rotated rapidly in forward and reverse directions to increase the cleaning range of the corrugated bottom and realize the removal of the oxide layer and impurities in the corrugated bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1Schematic diagram of the internal structure of the air bearing of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the foil body of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the foil forming equipment of the present invention;

[0026] Figure 4 This is a schematic diagram of the axial structure of the foil forming equipment of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the molding unit and the auxiliary unit of the present invention.

[0028] In the figure: 1, air bearing body; 101, top foil; 102, foil body; 1021, wave bottom; 1022, wave top; 103, welding point; 104, bearing sleeve; 105, shaft; 2, frame; 201, opening; 3, molding unit; 301, driven shaft; 302, concave pressure roller; 3021, arc concave surface; 3022, first pressure surface; 303, driving shaft; 304, convex pressure roller; 3041, arc convex; 3042, second Pressing surface; 305, transmission gear; 306, first power unit; 4, guide unit; 401, support plate; 402, limit roller; 403, arc guide plate; 5, adjustment unit; 501, slide groove; 502, movable seat; 503, electric telescopic mechanism; 6, auxiliary unit; 601, mounting shaft; 602, fixing frame; 603, auxiliary roller; 604, second power unit; 605, air inlet plug; 606, exhaust hole; 607, elastic hose; 608, motor. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0030] See also Figure 1-2The present embodiment provides an air bearing, which is made by using a foil forming device. The air bearing includes an air bearing body 1, and the air bearing body 1 includes a top foil 101, a welding point 103, a bearing sleeve 104 and a shaft 105. The top foil 101 is wrapped around the outside of the shaft 105, and the welding point 103 is located inside the bearing sleeve 104. The top foil 101 is assembled and connected to the outside of the shaft 105. When the shaft 105 rotates, a wedge-shaped space is formed between the top foil 101 and the shaft 105, and the gas enters this space and forms an air film driven by the rotor.

[0031] The present embodiment also provides a foil for making the above air bearing, including a foil body 102, wherein the foil body 102 is wrapped and assembled on the outside of the top foil 101, and the bearing sleeve 104 is assembled and connected to the outside of the foil body 102. The top foil 101 and the opposite end of the foil body 102 are welded at the position of the welding point 103. The foil body 102 is a wavy structure, and the foil body 102 includes a wave bottom 1021 and a wave top 1022. The wave bottom 1021 is an arc structure, and the wave top 1022 is an "I"-shaped structure. The foil body 102 provides elastic support for the air bearing body 1, can absorb vibration and impact, and reduce the wear and noise of the air bearing body 1. The deformation of the foil body 102 creates certain conditions for the formation of an air film. When the shaft 105 rotates, the deformation of the foil body 102 helps to form a stable air film between the shaft 105 and the air bearing body 1.

[0032] When the foil body 102 in this embodiment is applied to the above-mentioned air bearing body 1, when the shaft 105 rotates, its surface will continuously drive the gas in the surrounding environment into the wedge-shaped space. Due to the viscosity of the gas, the shaft 105 drives the gas to move, compresses the gas in the wedge-shaped area, and forms an air film with a certain pressure. When the pressure of the air film is large enough to support the load, the shaft 105 will float, thereby realizing the support function of the air bearing body 1, and also greatly reducing the friction. Embodiment 2

[0033] See also Figure 3-5Based on a foil provided in Example 1, this embodiment provides a foil forming device for making the above-mentioned foil body 102, including a frame 2, a forming unit 3, a guiding unit 4 and an adjusting unit 5. A supporting leg is provided at the bottom of the frame 2, an opening 201 is provided on one side of the frame 2, and a concave pressing roller 302 corresponds to the opening 201. The opening 201 is arranged so that the foil can be conveniently taken out horizontally from the concave pressing roller 302 after the foil is processed. The forming unit 3 is arranged at one end of the inner part of the frame 2, and the guiding unit 4 is arranged at a position corresponding to the forming unit 3 at the top of the frame 2. The guiding unit 4 is used for limiting and guiding the metal sheet when it enters the forming unit 3. The adjusting unit 5 is arranged on a side of the frame 2 away from the forming unit 3. The adjusting unit 5 drives the auxiliary unit 6 to move horizontally. The inner end of the frame 2 is provided with an auxiliary unit 6 that cooperates with the forming unit 3, and the end of the auxiliary unit 6 is rotatably connected to the adjusting unit 5.

[0034] The forming unit 3 includes a concave pressing roller 302 and a convex pressing roller 304 that cooperate with each other. The circumferential surface of the concave pressing roller 302 is provided with arc-shaped concave surfaces 3021 at equal intervals along the axial direction. The circumferential surface of the concave pressing roller 302 is provided with a first pressing surface 3022 at equal intervals between two adjacent arc-shaped concave surfaces 3021. The circumferential surface of the convex pressing roller 304 is provided with arc-shaped protrusions 3041 at equal intervals. The circumferential surface of the convex pressing roller 304 is provided with a second pressing surface 3042 at equal intervals between two adjacent arc-shaped protrusions 3041. The arc-shaped concave surfaces 3021 and the arc-shaped protrusions 3041 correspond to each other to form the wave bottom 1021. The first pressing surface 3022 and the second pressing surface 3042 correspond to each other to form the wave top 1022. The arc-shaped concave surface 3021 corresponds to the circumferential surface of the auxiliary roller 603.

[0035] A driven shaft 301 is fixedly passed through the middle of the concave pressure roller 302, and a driving shaft 303 is fixedly passed through the middle of the convex pressure roller 304. The ends of the driven shaft 301 and the driving shaft 303 are in a linear array and are rotatably connected to the side of the frame 2. The ends of the driven shaft 301 and the driving shaft 303 are fixedly sleeved with mutually meshing transmission gears 305. A first power unit 306 is provided on the side of the frame 2. The output end of the first power unit 306 is fixedly connected to the end of the driving shaft 303. The first power unit 306 is preferably a servo motor system. The first power unit 306 drives the convex pressure roller 304 to rotate, and the convex pressure roller 304 drives a transmission gear 305 at one end to rotate, thereby realizing the opposite movement of the two transmission gears 305, realizing the opposite rotation of the convex pressure roller 304 and the concave pressure roller 302, and forming the metal sheet while allowing the metal sheet to be conveyed downward.

[0036] The guide unit 4 includes a support plate 401 and an arc-shaped guide plate 403 arranged on the top surface of the frame 2. Both sides of the support plate 401 are rotatably connected to the limiting rollers 402. The arc-shaped guide plate 403 is arranged at the bottom of the frame 2. One end of the arc-shaped guide plate 403 corresponds to the fitting position between the concave pressure roller 302 and the convex pressure roller 304. The other end of the arc-shaped guide plate 403 extends to the side of the concave pressure roller 302 close to the auxiliary roller 603. The metal sheet passes through between the two limiting rollers 402 to provide limiting guidance for the downward transmission of the metal sheet. The arc-shaped guide plate 403 at the bottom guides the metal sheet after passing through the forming unit 3 to the bottom of the concave pressure roller 302, so that the metal sheet is wound along the circumferential direction of the concave pressure roller 302.

[0037] The adjustment unit 5 includes a slide groove 501, which is symmetrically arranged on both sides of the frame 2. A movable seat 502 is slidably connected in the slide groove 501. An electric telescopic mechanism 503 is provided between the end of the movable seat 502 and the end surface of the slide groove 501. The electric telescopic mechanism 503 is preferably an electric telescopic rod. The movable seat 502 is driven to move horizontally by the telescopic movement of the electric telescopic mechanism 503, and the movable seat 502 drives the auxiliary roller 603 to move horizontally to adjust the distance between the auxiliary roller 603 and the arc-shaped concave surface 3021.

[0038] The auxiliary unit 6 includes a mounting shaft 601, both ends of which pass through and are rotatably connected to the movable seats 502 on both sides. A fixing frame 602 is provided at the end of the mounting shaft 601, and an auxiliary roller 603 is rotatably connected to the fixing frame 602 in a ring-shaped arrangement. The radius of the auxiliary roller 603 is the same as that of the arc-shaped protrusion 3041. The auxiliary roller 603 cooperates with the arc-shaped concave surface 3021 to limit the metal sheet wound on the concave pressure roller 302, so that the metal sheet is tightly attached to the arc-shaped concave surface 3021.

[0039] When in use, the metal sheet to be formed is first passed through between the two limiting rollers 402, and the end of the metal sheet is extended into the joint between the concave pressing roller 302 and the convex pressing roller 304, the first power unit 306 is started, and the two transmission gears 305 are engaged with each other to realize the opposite rotation of the concave pressing roller 302 and the convex pressing roller 304 on both sides, and the metal sheet is pulled downward, and at the same time, the arc concave surface 3021 and the arc convex protrusion 3041 are used to press the wave bottom 1021 on the metal sheet, and the first pressing surface 3022 and the second pressing surface 3042 are used to press the wave top 1022 on the metal sheet, and the wave bottom 1021 and the wave top 1022 are distributed at intervals along the circumferential direction of the metal sheet, so as to form a wavy structure of the foil body 102, and the pressed metal sheet passes through the concave pressing roller 302 and the convex pressing roller 304. After the bottom between the convex pressure rollers 304 is transmitted, it passes through the arc guide plate 403 and goes around to the other side of the concave pressure roller 302. At the same time, the arc concave surface 3021 cooperates with the auxiliary roller 603 to drive the auxiliary roller 603 to rotate around the installation shaft 601. At this time, each auxiliary roller 603 is in a locked state under the action of the locking mechanism, thereby realizing the rotation of the installation shaft 601. When the metal sheet passes through the auxiliary roller 603, the auxiliary roller 603 presses the pressed wave bottom 1021 on the metal sheet into the arc concave surface 3021 to limit the metal sheet and prevent the metal sheet from being elastically reset under the action of its own elasticity until the metal sheet is completely wound on the concave pressure roller 302, thereby realizing the forming of the foil body 102, and the two ends of the entire metal sheet after being completely pressed will not overlap when it is completely wound on the concave pressure roller 302.

[0040] However, during the pressing process of the metal sheet, the concave pressing roller 302 and the convex pressing roller 304 are in a counter-rotating state, and the convex pressing roller 304 is a power roller. Therefore, when the arc-shaped concave surface 3021 and the arc-shaped protrusion 3041 are meshed, the downward extrusion force of the bottom of the arc-shaped protrusion 3041 on the metal sheet is greater than the upward extrusion force of the top of the arc-shaped protrusion 3041 on the metal sheet. In addition, during the pressing process, the temperature of the metal sheet will increase due to the effect of extrusion friction, resulting in an increase in the plastic deformation capacity of the metal sheet. As a result, the thickness of the side of the wave bottom 1021 that is subjected to greater force will be reduced during the forming of the wave bottom 1021, resulting in uneven thickness on both sides of the wave bottom 1021, which affects the quality of the foil body 102. In order to solve the above problems:

[0041] A second power unit 604 is provided on the movable seat 502 on one side, and the output end of the second power unit 604 is fixedly connected to the closed end of the installation shaft 601. The second power unit 604 is preferably a stepping motor for driving the installation shaft 601 to rotate and drive each auxiliary roller 603 to rotate independently.

[0042] A motor 608 corresponding to the auxiliary roller 603 is provided on the fixed frame 602, and the output shaft of the motor 608 is fixedly connected to the end of the auxiliary roller 603. The motor 608 is used to drive the rotation of the auxiliary roller 603, and the motor 608 can only rotate forward and reverse. When the motor 608 drives the auxiliary roller 603 to rotate forward and reverse, it will not be interfered by the elastic hose 607. A locking mechanism for positioning the auxiliary roller 603 is provided on the fixed frame 602. When the motor 608 is not needed to drive the auxiliary roller 603 to rotate, the locking mechanism is used to lock the auxiliary roller 603, and the locking mechanism is in a locked state in the initial state.

[0043] When in use, after the metal sheet is completely pressed and formed, the first power unit 306 is stopped and the second power unit 604 is started. Since the wave bottom 1021 after being pressed rotates 180 degrees, it will cooperate with the auxiliary roller 603 on the other side. Figure 5 As shown, at this time, the side of the wave bottom 1021 that is subjected to greater pressure from the convex pressure roller 304 is located at the top of the arc-shaped concave surface 3021. The rotation of the output end of the second power unit 604 causes each auxiliary roller 603 to rotate around the installation shaft 601 as a whole, so that the concave pressure roller 302 and the installation shaft 601 rotate in opposite directions. At this time, the installation shaft 601 provides a rotational force and drives the auxiliary roller 603 to rotate, as shown in FIG. Figure 5 As shown, at this time, the squeezing pressure of the auxiliary roller 603 on the bottom of the arc-shaped concave surface 3021 is greater than the squeezing pressure on the top of the arc-shaped concave surface 3021, and the electric telescopic mechanism 503 is started at the same time, so that the electric telescopic mechanism 503 contracts and drives the movable seat 502 to move toward the concave pressure roller 302, and the squeezing pressure of the auxiliary roller 603 on the wave bottom 1021 is increased through the movable seat 502. At the same time, after the auxiliary roller 603 corresponds to the wave bottom 1021, the locking mechanism releases the lock on the auxiliary roller 603, and starts the motor 608. The motor 608 drives the corresponding auxiliary roller 603 to rotate rapidly forward and reverse, so as to balance the thickness on both sides of the wave bottom 1021 and correct the uneven thickness on both sides of the wave bottom 1021.

[0044] In addition, when the concave pressing roller 302 and the convex pressing roller 304 are pressing the metal sheet, the oxide layer and impurities on the metal sheet fall off and enter the wave bottom 1021 between the arc-shaped protrusion 3041 and the metal sheet, thereby causing local deformation of the wave bottom 1021. In order to solve the above problem:

[0045] The mounting shaft 601 is a hollow structure with one end being transparent. The transparent end of the mounting shaft 601 is rotatably connected with an air inlet plug 605, and the air inlet plug 605 is connected to an external high-pressure air supply system. The rotatable connection between the air inlet plug 605 and the mounting shaft 601 ensures that when the mounting shaft 601 rotates, the air supply of the high-pressure air supply system will not be affected. The auxiliary roller 603 is a hollow structure with both ends closed. One side of the circumferential surface of the auxiliary roller 603 is provided with exhaust holes 606 at equal intervals. When the auxiliary roller 603 is matched with the arc-shaped concave surface 3021, the exhaust holes 606 distributed in a horizontal array Corresponding to the horizontal center axis of the arc-shaped concave surface 3021, each auxiliary roller 603 and the installation shaft 601 are connected through an elastic hose 607. A solenoid valve is provided on the elastic hose 607. After the solenoid valve is turned on, the external high-pressure air supply system supplies high-pressure gas into the air inlet plug 605. After the high-pressure gas enters the installation shaft 601, it passes through the elastic hose 607 and enters each auxiliary roller 603, and is finally discharged through the exhaust hole 606. The opening and closing of the elastic hose 607 is controlled by the solenoid valve to realize the opening and closing of the exhaust hole 606 on each auxiliary roller 603.

[0046] When in use, before the wave bottom 1021 is corrected by the above method, and after the metal plate is completely pressed and formed and is still wound on the concave pressure roller 302 and continues to rotate, the second power unit 604 drives the installation shaft 601 to rotate synchronously, so that the auxiliary roller 603 and the concave pressure roller 302 rotate synchronously in opposite directions, and then the extension of the electric telescopic mechanism 503 is used to drive the movable seat 502 to move, so that the installation shaft 601 drives the auxiliary roller 603 to move slightly as a whole to the side away from the concave pressure roller 302, so that when the auxiliary roller 603 rotates to cooperate with the corresponding wave bottom 1021, a tiny gap is generated between the wave bottom 1021 and the auxiliary roller 603, and at the same time, the formed wave bottom 1021 is still in contact with the circumferential surface of the auxiliary roller 603 under the action of its own elastic reset, so as to achieve the expected limiting effect, and at the same time, the solenoid valve is opened to start the external high-pressure air supply system to pass high-pressure air into the air inlet plug 605. After the wave bottom 1021 rotates to the position corresponding to the corresponding auxiliary roller 603, the high-pressure gas passes through the mounting shaft 601 and the corresponding elastic hose 607 and is discharged into the corresponding wave bottom 1021 through the corresponding exhaust hole 606. Under the action of the high-pressure gas, the metal sheet separates from the auxiliary roller 603 and fits the inner side of the arc-shaped concave surface 3021. At the same time, the high-pressure gas discharges the oxide layer and impurities gathered in the wave bottom 1021. Secondly, the locking mechanism releases the lock of the auxiliary roller 603, and the motor 608 is started to drive the corresponding auxiliary roller 603 to rotate rapidly in both positive and negative directions, thereby expanding the injection area of ​​the high-pressure gas and increasing the cleaning range of the wave bottom 1021. The positive and negative rotation angle of the auxiliary roller 603 is less than 60 degrees, thereby finally realizing the removal of the oxide layer and impurities in each wave bottom 1021 on the metal sheet. After the cleaning is completed, each component is reset, and the wave bottom 1021 is corrected using the above-mentioned correction method.

[0047] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A foil forming device, the foil forming device is used to form a foil, the foil is used to make an air bearing, the air bearing comprises an air bearing body, characterized in that: The air bearing body includes a top foil, a welding point, a bearing sleeve and a shaft, wherein the top foil is wrapped around the outside of the shaft and the welding point is located inside the bearing sleeve; The foil comprises a foil body, the foil body is wrapped and assembled on the outside of the top foil, the bearing sleeve is matched with the outside of the foil body, and opposite ends of the top foil and the foil body are welded at the position of the welding point; The foil body is a wave-shaped structure, and the foil body includes a wave bottom and a wave top, the wave bottom is an arc-shaped structure, and the wave top is an "I"-shaped structure; The foil forming device comprises a frame, a forming unit, a guide unit and an adjusting unit, wherein the inner end of the frame is provided with an auxiliary unit cooperating with the forming unit, and the adjusting unit drives the auxiliary unit to move horizontally; The molding unit comprises a concave pressing roller and a convex pressing roller that cooperate with each other; The auxiliary unit comprises a mounting shaft, which is a hollow structure with one end being transparent, a fixing frame being provided at the end of the mounting shaft, auxiliary rollers being rotatably connected to the fixing frame in a ring-shaped arrangement, and an air inlet plug being rotatably connected to the transparent end of the mounting shaft; The auxiliary roller is a hollow structure with closed ends, and exhaust holes are evenly spaced on one side of the circumferential surface of the auxiliary roller. Each of the auxiliary rollers is connected to the mounting shaft via an elastic hose. The circumferential surface of the concave pressing roller is provided with arcuate concave surfaces at equal intervals, the circumferential surface of the concave pressing roller is provided with a first pressing surface at equal intervals at a position between two adjacent arcuate concave surfaces, the circumferential surface of the convex pressing roller is provided with arcuate protrusions at equal intervals, the circumferential surface of the convex pressing roller is provided with a second pressing surface at equal intervals at a position between two adjacent arcuate protrusions, the arcuate concave surfaces and the arcuate protrusions are mutually correspondingly matched to form the wave bottom, and the arcuate concave surface is correspondingly matched with the auxiliary roller, and the first pressing surface and the second pressing surface are mutually correspondingly matched to form the wave top; A driven shaft is fixedly passed through the middle of the concave pressure roller, and a driving shaft is fixedly passed through the middle of the convex pressure roller. The ends of the driven shaft and the driving shaft are rotatably connected to the side of the frame in a linear array. The ends of the driven shaft and the driving shaft are fixedly sleeved with mutually meshing transmission gears. A first power unit is provided on the side of the frame, and the output end of the first power unit is fixedly connected to the end of the driving shaft. The fixed frame is provided with a motor corresponding to the auxiliary roller, and the output shaft of the motor is fixedly connected to the end of the auxiliary roller.

2. The foil forming device according to claim 1, characterized in that: An opening is provided on one side of the frame, the concave pressure roller corresponds to the opening, a supporting leg is provided at the bottom of the frame, the forming unit is provided at one end inside the frame, the guide unit is provided at a position corresponding to the forming unit at the top of the frame, the adjusting unit is provided on a side of the frame away from the forming unit, and an end of the auxiliary unit is rotatably connected to the adjusting unit.

3. The foil forming device according to claim 1, characterized in that: The guide unit includes a support plate and an arc-shaped guide plate arranged on the top surface of the frame, both sides of the support plate are rotatably connected to limit rollers, the arc-shaped guide plate is arranged at the bottom of the frame, and one end of the arc-shaped guide plate corresponds to the matching position between the concave pressure roller and the convex pressure roller.

4. The foil forming device according to claim 1, characterized in that: The adjustment unit comprises a slide groove, which is symmetrically arranged on both sides of the frame, a movable seat is slidably connected in the slide groove, and an electric telescopic mechanism is arranged between the end of the movable seat and the end surface of the slide groove.

5. The foil forming device according to claim 4, characterized in that: Both ends of the mounting shaft pass through and are rotatably connected to the movable seats on both sides. A second power unit is provided on the movable seat on one side, and an output end of the second power unit is fixedly connected to the closed end of the mounting shaft. The air inlet plug is connected to an external high-pressure air supply system, an electromagnetic valve is provided on the elastic hose, and a locking mechanism for positioning the auxiliary roller is provided on the fixed frame.

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