WO2021179755A1

WO2021179755A1 - Aluminum oxide insulation winding, preparation method, and winding apparatus therefor

Info

Publication number: WO2021179755A1
Application number: PCT/CN2020/140854
Authority: WO
Inventors: 王晓波; 雷厉
Original assignee: 西比里电机技术苏州有限公司
Priority date: 2020-03-10
Filing date: 2020-12-29
Publication date: 2021-09-16
Also published as: CN111312498A; CN111312498B

Abstract

Disclosed is an aluminum oxide insulation winding, in particular relating to an aluminum oxide insulated transformer winding, a preparation method therefor, and a winding apparatus therefor. The winding comprises a conductor and an insulating layer. During the winding of a coil, the insulating layer does not need to be placed, and after the winding is completed, a semi-finished winding product is placed in an electroplating bath. By means of a thermo-electrochemical oxidation process, and by rationally controlling the output parameters of a power supply, the type of an electrolyte solution and the concentration thereof, an insulating layer with α-Al₂O₃ and γ-Al₂O₃ as the main components is grown in situ on the surface of an aluminum conductor core and between turns. Since the electroplating solution has an excellent permeability, the formed insulating layer forms a whole winding with the conductor. The aluminum oxide insulation layer has the characteristics of high-temperature resistance, a high mechanical strength, a good water resistance and a good electrical insulation, thereby greatly improving the life-time and performance of the winding.

Description

Alumina insulated winding, preparation method and winding equipment

Technical field

The invention belongs to the technical field of wires, and specifically relates to an alumina insulated winding, a preparation method and winding equipment thereof.

Background technique

At present, the insulation of the wire mainly relies on being wrapped with insulating materials, such as rubber materials, which have poor high temperature resistance. At the same time, in order to improve the insulation effect, a thick layer of rubber needs to be wrapped, which is also not conducive to use.

At the same time, in the process of aluminum foil winding, the traditional aluminum foil winding equipment will cause a certain deviation of the aluminum foil after winding the aluminum foil for a period of time, which will affect the subsequent production efficiency and the quality of the finished product, and the current deviation of the aluminum foil cannot be To detect the phenomenon, it is only possible to manually level both sides of the aluminum foil roll through the following procedure, which leads to low overall production efficiency and time-consuming and labor-intensive. For this reason, we propose an aluminum foil winding device to solve the above problems.

Summary of the invention

The present invention provides an aluminum oxide insulated winding, comprising a conductor and an insulating coating, the conductor is aluminum foil, and the insulating coating is a layer grown in situ on the surface of the conductor, including α-Al ₂ O ₃ , γ-Al ₂ O ₃ ingredients.

Preferably, the surface of the conductor is coated with two layers of K ₃ PO ₄ solution.

The present invention also provides a preparation method, including the following steps:

Step 1: Winding the coil; winding aluminum foil on the mold;

Step 2: Coat two layers of 15% K ₃ PO ₄ solution on the surface of the aluminum foil;

Step 3: Weld the lead bar: the first and last turns of the aluminum foil are welded on the aluminum bar;

Step 4: After the winding is completed, place it in an oven to preheat at 45°C for 30 minutes, so that the surface of the aluminum foil is easily semi-solidified;

Step 5: Place in the plating bath: Place the semi-finished winding of Step 4 in the plating bath, and the electroplating liquid level does not exceed the upper surface of the winding, but does not exceed the aluminum bar;

Step 6: The windings are dried; the windings after electroplating are placed in a drying equipment and kept at 80°C for 2H;

Step 7: Flush the windings with high-pressure air

Preferably, during the winding process, the working environment temperature should not be lower than 28°C.

Preferably, in step 5, the proportion of the electroplating solution is: 15% concentration of Ka ₂ SiO ₃ , 10% concentration of KClO ₃ , and 10% concentration of KOH.

Preferably, in step 5, the electroplating bath power supply is increased to 800±50V at a rate of 10V/S, the current is not less than 15A, and the current is kept at least 2.5H.

The present invention also provides a winding equipment, an aluminum foil winding equipment, including a frame, a discharge roller, a collection roller, a traction mechanism, a coating mechanism, an adjustment mechanism, a detection mechanism, and a toggle mechanism. The discharge roller And the toggle mechanism are installed at the front and rear ends of the frame respectively, the traction mechanism is installed in the middle section of the frame, the coating mechanism is fixed at one side wall of the frame, and the adjustment mechanism is installed on the frame and located beside the traction mechanism. The detection mechanism is fixed at the rear end of the frame and is located between the traction mechanism and the receiving roller, and the receiving roller is installed on the toggle mechanism.

Preferably, the traction mechanism includes a first traction roller, a second traction roller, a third traction roller, and a fourth traction roller, and the first traction roller, the second traction roller, the third traction roller, and the fourth traction roller are along the frame The length direction is arranged on the frame in turn, the unwinding roller, the first traction roller and the second traction roller are arranged in a stepped manner, the second traction roller and the third traction roller are arranged in parallel, and the fourth traction roller and the receiving roller are arranged in parallel .

Preferably, the coating mechanism includes a brush plate, a rotating block, a connecting plate, a first drive motor, a first screw slide table and a liquid supply tank, and the first screw slide table is vertically fixed on a frame of the frame. On the side, the brush plate is horizontally arranged between the second traction roller and the third traction roller, and one end of the brush plate is fixedly connected with the rotating block. The connecting plate is in an L-shaped structure and is connected to the sliding table of the first screw sliding table. It is fixedly connected, the first driving motor is installed on the top of the connecting plate and its output end is fixedly connected with the rotating block, and the liquid supply pool is arranged on the side of the frame.

Preferably, the adjusting mechanism includes an adjusting roller, a rotating shaft, a belt, a second drive motor, two connecting arms and two synchronizing wheels. The two connecting arms are symmetrically fixed on both ends of the rotating shaft, and each connected The front ends of the arms are respectively fixedly connected with the two ends of the adjusting roller. The second driving motor is horizontally arranged beside the frame and its output end is fixedly connected with a synchronous wheel, and the other synchronous wheel is fixed on one end of the rotating shaft, and the rotating shaft rotates. Installed on the frame, the belt is sleeved on the outside of the two synchronous wheels.

Preferably, the detection mechanism includes a guide rod, a drive assembly, two side plates, and two monitoring components. The two side plates are respectively fixed on both sides of the frame. The side plates are fixedly connected, the two monitoring components are arranged symmetrically, and the front end of each monitoring component is slidably arranged on the guide rod, and the rear end of each monitoring component is fixedly connected with the driving component.

Preferably, the drive assembly includes a third drive motor, a threaded rod, two sliding blocks and two fixing seats. The third drive motor is fixed on a side plate and its output end is fixedly connected to one end of the threaded rod. There are two sections of oppositely arranged threads, two sliders are symmetrically arranged on both ends of the threaded rod, two fixing seats are respectively fixed on the side walls of the two sliders, and each monitoring component includes a first drive The air cylinder, the linkage plate, the bracket and the contact sensor, the first drive cylinder is arranged obliquely and its rear end is fixed on a fixed seat, the middle section of the linkage plate is slidably arranged on the guide rod, and the output end of the first drive cylinder It is fixedly connected with the rear end of the linkage plate, the bracket is fixed on the front end of the linkage plate, and the contact sensor is fixed on the bracket.

Preferably, the toggle mechanism includes a bearing table, a second screw slide table, a supporting plate, a neat component and a support component. At the top, the supporting plate is horizontally fixed on the sliding table of the second screw sliding table, the supporting component is fixed on the top of the bearing platform and located beside the second screw sliding table, and the neat component is fixed on the supporting component.

Preferably, the support assembly includes a gantry, a second driving cylinder, a longitudinal moving plate, and a third driving cylinder. The gantry is vertically fixed on the top of the bearing platform, and the second driving cylinder is vertically fixed on the top of the gantry. And its output end is fixedly connected with the top of the longitudinal moving plate, the third driving cylinder is horizontally fixed on the longitudinal moving plate and its output end is fixedly connected with the neat assembly.

Preferably, the neat assembly includes a limit plate, a hinge block, two arc-shaped leveling blocks, two fixed arms and two linkage arms, and the two arc-shaped leveling blocks are respectively fixed to the bottom of the front ends of the two linkage arms. Connected, the top of the front end of the two linkage arms are slidingly fitted with the limit plate, the two fixed arms are arranged symmetrically, and the two ends of each fixed arm are respectively fixedly connected with the limit plate and the longitudinal moving plate, and the rear ends of the two linkage arms They are all fixedly connected with the hinge block, and the output end of the third driving cylinder is fixedly connected with the hinge block.

Compared with traditional winding insulation, the present invention has outstanding advantages:

At the same time, the winding equipment provided by the present invention also has the following effects:

(1) The aluminum foil is unloaded by the unwinding roller, and at the same time, the aluminum foil is rewinded by the unwinding roller. Among them, the first traction roller, the second traction roller, the third traction roller and the fourth traction roller are used to simultaneously The aluminum foil is drawn and guided during the rewinding. The first screw slide table drives the connecting plate fixedly connected to the slide table to move down, and drives the first drive motor, rotating block and brush plate on the connecting plate to move down synchronously to make the brush The board coats the surface of the aluminum foil with K3PO4 solution to complete the coating step of the aluminum foil. When it is necessary to apply liquid to the brush plate, the first drive motor drives the rotating block to drive the brush plate to rotate 180 degrees to make the brush plate Deviation from the frame, the first screw slide table drives the slide table to move down, and drives the brush plate to move down to the liquid supply tank set next to the frame to complete the automatic liquid filling step of the brush plate. The degree of automation is high, and the use The two first driving cylinders simultaneously drive the rear ends of the two linkage plates to move down. The design of the middle section of the linkage plates is sleeved on the guide rod, so that the contact type is set on the two brackets on the front ends of the two linkage plates. The sensor moves up to detect the aluminum foil on both sides of the winding. When the aluminum foil deviates and triggers a contact sensor, the second screw slide table drives the supporting plate fixedly connected to the slide table to the other side. The triggered contact sensor moves until one of the triggered contact sensors does not trigger, thereby completing the automatic winding correction of the aluminum foil, which solves the existing problem of the inability to detect the deviation of the aluminum foil and improves the quality of product production. efficient;

(2) The third drive motor is used to drive the threaded rod to rotate, and under the action of the two reverse threads designed on the threaded rod, the two sliders can move relative to each other synchronously. Secondly, set the middle section of the two linkage plates. Under the guide rod design, it can then drive the two interlocking plates fixedly connected to the output ends of the two first drive cylinders to move synchronously, realizing real-time adjustment and detection operations according to the width of the aluminum foil, improving the overall practical performance of the equipment ; And use the second drive motor to drive a synchronous wheel fixedly connected to its output end to rotate, under the action of the belt, drive the rotation shaft fixedly connected to the other synchronous wheel to rotate, and drive the adjustment rollers on the front ends of the two connecting arms to rotate, Therefore, the traction tension of the aluminum foil can be adjusted in real time according to the ductility of different aluminum foils, which further improves the overall performance of the equipment;

(3) The second drive cylinder is used to drive the hinge block fixedly connected to its output end to move. The rear ends of the two linkage arms are fixedly connected with the hinge seat and the front ends of the two linkage arms are in sliding cooperation with the limit plate, thereby Make the two arc-shaped leveling blocks fixed on the front ends of the two linkage arms realize relative or opposite movement in the length direction of the limit plate, so as to realize the leveling action on both sides after the winding of the aluminum foil by the winding roller is completed, reducing The manual labor is improved, and the aluminum foil winding effect is improved. Secondly, the third driving cylinder drives the longitudinal moving plate to move in the vertical direction. Under the stable connection of the two fixed arms, the second mounted on the longitudinal moving plate The driving cylinder and the two arc-shaped leveling blocks fixedly connected indirectly to the output end of the second driving cylinder move synchronously in the vertical direction, so that real-time leveling actions can be performed according to the winding thickness of the aluminum foil, and the overall performance of the equipment is further improved.

Description of the drawings

FIG. 1 is a schematic diagram of a first-angle three-dimensional structure of the present invention;

2 is a schematic diagram of a second angle three-dimensional structure of the present invention;

Figure 3 is a top view of the present invention;

Figure 4 is a side view of the present invention;

FIG. 5 is a schematic diagram of a partial three-dimensional structure of the present invention;

Figure 6 is a top view of Figure 5;

FIG. 7 is a schematic diagram of the three-dimensional structure of the toggle mechanism of the present invention.

The labels in the figure are:

Frame 1, unwinding roller 2, take-up roller 3, traction mechanism 4, first traction roller 41, second traction roller 42, third traction roller 43, fourth traction roller 44, coating mechanism 5, brush plate 51, rotating block 52, connecting plate 53, first drive motor 54, first screw slide 55, liquid supply tank 56, adjusting mechanism 6, adjusting roller 61, rotating shaft 62, belt 63, second drive motor 64, Connecting arm 65, synchronization wheel 66, detection mechanism 7, guide rod 71, driving assembly 72, third driving motor 721, threaded rod 722, sliding block 723, fixing seat 724, side plate 73, monitoring assembly 74, first driving cylinder 741, linkage plate 742, bracket 743, contact sensor 744, toggle mechanism 8, bearing table 81, second screw sliding table 82, supporting plate 83, neat assembly 84, limit plate 841, hinge block 842, The arc-shaped leveling block 843, the fixed arm 844, the linkage arm 845, the supporting assembly 85, the gantry 851, the second driving cylinder 852, the longitudinal moving plate 853, and the third driving cylinder 854.

Detailed ways

In order to make the above objectives, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the following description, specific details are set forth in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

Example one

The preparation method of this request:

Step 1: Winding the coil; winding aluminum foil on the mold;

Step 7: Flush the windings with high-pressure air

Preferably, in step 5, the power supply of the electroplating bath is increased to 800±50V at a rate of 10V/S, the current is not less than 15A, and the current is kept at least 2.5H.

The prepared insulated winding has the following advantages:

1) The aluminum oxide insulating layer has extremely high mechanical strength, reaching above 80HRA;

2) The thickness of the aluminum oxide insulating layer is less than 100μm;

3) The thermal conductivity of the aluminum oxide insulating layer is 20W/m.K;

4) The formed winding is waterproof and can run even in water;

5) The formed winding has high temperature resistance and can be operated for a long time in an environment of 300℃;

6) The surface of the forming winding is covered with an aluminum oxide insulating layer, but the surface of the lead-out row can be conductive;

7) Since the surface area of the aluminum foil is dozens of times the surface area of the aluminum wire, the electroplating solution formulation and process described in this article can greatly increase the rate of thermal electrochemical oxidation.

Example two

With reference to Figures 1 to 7, it can be seen that an aluminum foil winding device is disclosed, which includes a frame 1, a discharge roller 2, a take-up roller 3, a traction mechanism 4, a coating mechanism 5, an adjustment mechanism 6, a detection mechanism 7 and a toggle The mechanism 8, the unwinding roller 2 and the toggle mechanism 8 are respectively installed at the front and rear ends of the frame 1, the traction mechanism 4 is installed in the middle section of the frame 1, and the coating mechanism 5 is fixed on a side wall of the frame 1. The adjustment mechanism 6 is installed on the frame 1 and located beside the traction mechanism 4. The detection mechanism 7 is fixed at the rear end of the frame 1 and is located between the traction mechanism 4 and the receiving roller 3. The receiving roller 3 is installed on the dial Moving mechanism 8 on.

The traction mechanism 4 includes a first traction roller 41, a second traction roller 42, a third traction roller 43 and a fourth traction roller 44, a first traction roller 41, a second traction roller 42, a third traction roller 43 and a fourth traction roller. The traction roller 44 is sequentially arranged on the frame 1 along the length direction of the frame 1, the unwinding roller 2, the first traction roller 41 and the second traction roller 42 are arranged in a stepped manner, and the second traction roller 42 and the third traction roller 43 are arranged in steps. Parallel arrangement, the fourth traction roller 44 and the take-up roller 3 are arranged in parallel, the first traction roller 41, the second traction roller 42, the third traction roller 43 and the fourth traction roller 44 are used to simultaneously draw and guide the aluminum foil during winding. , Improve the winding quality of aluminum foil and facilitate the coating adjustment steps on the way.

The coating mechanism 5 includes a brush plate 51, a rotating block 52, a connecting plate 53, a first drive motor 54, a first screw sliding table 55 and a liquid supply tank 56, the first screw sliding table 55 is vertically fixed On one side of the frame 1, the brush plate 51 is horizontally arranged between the second traction roller 42 and the third traction roller 43, and one end of the brush plate 51 is fixedly connected to the rotating block 52, and the connecting plate 53 is L-shaped Structure and fixedly connected with the sliding table of the first screw sliding table 55, the first driving motor 54 is installed on the top of the connecting plate 53 and its output end is fixedly connected with the rotating block 52, and the liquid supply tank 56 is arranged beside the frame 1. On the side, the surface of the aluminum foil is coated with K3PO4 solution through the brush plate 51 to complete the coating step of the aluminum foil. When the brush plate 51 needs to be filled with liquid, the first drive motor 54 drives the rotating block 52 to drive the brush plate 51 to rotate One hundred and eighty degrees to make the brush plate 51 deviate from the frame 1, the first screw slide 55 drives the sliding table to move down, and drives the brush plate 51 to move down to the liquid supply tank 56 set beside the frame 1. The automatic liquid filling step of the brush plate 51 is completed, which improves the automation degree of the equipment.

The adjusting mechanism 6 includes an adjusting roller 61, a rotating shaft 62, a belt 63, a second driving motor 64, two connecting arms 65 and two synchronizing wheels 66. The two connecting arms 65 are symmetrically fixed on both ends of the rotating shaft 62 And the front end of each connecting arm 65 is fixedly connected to the two ends of the adjusting roller 61 respectively. The second driving motor 64 is horizontally arranged beside the frame 1 and its output end is fixedly connected to one synchronous wheel 66, and the other synchronous wheel 66 is fixed on one end of the rotating shaft 62, the rotating shaft 62 is rotatably installed on the frame 1, the belt 63 is sleeved on the outside of the two synchronous wheels 66, and the second driving motor 64 is used to drive a synchronous wheel fixedly connected to its output end 66 rotates, under the action of the belt 63, drives the rotation shaft 62 fixedly connected with the other synchronization wheel 66 to rotate, and drives the adjustment roller 61 on the front end of the two connecting arms 65 to rotate, so that real-time adjustment can be made according to the different ductility of different aluminum foils. The aluminum foil traction tension further improves the overall performance of the equipment.

The detection mechanism 7 includes a guide rod 71, a driving component 72, two side plates 73 and two monitoring components 74. The two side plates 73 are respectively fixed on both sides of the frame 1, and the guide rod 71 is arranged horizontally and the two The ends are respectively fixedly connected to the two side plates 73, the two monitoring components 74 are arranged symmetrically, and the front end of each monitoring component 74 is slidably arranged on the guide rod 71, and the rear end of each monitoring component 74 is fixedly connected to the driving component 72 , The driving assembly 72 can control the two monitoring assemblies 74 to move relative or to each other, so as to achieve the purpose of real-time detection of the deviation of the aluminum foil according to the width of the aluminum foil.

The driving assembly 72 includes a third driving motor 721, a threaded rod 722, two sliding blocks 723, and two fixing seats 724. The third driving motor 721 is fixed on a side plate 73 and its output end is connected to one end of the threaded rod 722. Fixed connection, the threaded rod 722 is provided with two oppositely arranged threads, the two sliders 723 are symmetrically arranged on both ends of the threaded rod 722, and the two fixing seats 724 are respectively fixed on the side walls of the two sliders 723 Each monitoring component 74 includes a first driving cylinder 741, a linkage plate 742, a bracket 743, and a contact sensor 744. The first driving cylinder 741 is inclined and its rear end is fixed on a fixed seat 724. The linkage plate The middle section of 742 is slidably arranged on the guide rod 71, the output end of the first driving cylinder 741 is fixedly connected with the rear end of the linkage plate 742, the bracket 743 is fixed on the front end of the linkage plate 742, and the contact sensor 744 is fixed on the bracket On 743, the two first driving cylinders 741 are used to simultaneously drive the rear ends of the two linkage plates 742 to move down. The contact sensors 744 installed on the two brackets 743 of the two brackets are moved up to detect the aluminum foil on both sides during winding, which solves the problem of the existing failure to detect the deviation of the aluminum foil. Secondly, it is driven by the third drive motor 721 The threaded rod 722 rotates, and under the action of the two reverse threads designed on the threaded rod 722, the two sliding blocks 723 move relative to each other synchronously. Secondly, the guide rod 71 is sleeved in the middle section of the two interlocking plates 742. Therefore, it can drive the two interlocking plates 742 fixedly connected to the output ends of the two first driving cylinders 741 to move synchronously, so that real-time adjustment and detection operations can be performed according to the width and size of the aluminum foil, and the overall practical performance of the device is improved.

The toggle mechanism 8 includes a bearing table 81, a second screw sliding table 82, a supporting plate 83, a neat component 84 and a supporting component 85. The bearing table 81 is fixed at the rear end of the frame 1, and the second screw sliding table 82 is arranged on the top of the bearing table 81, the supporting plate 83 is horizontally fixed on the sliding table of the second screw sliding table 82, and the supporting assembly 85 is fixed on the top of the bearing table 81 and located beside the second screw sliding table 82 On the side, the tidy component 84 is fixed on the support component 85. When the contact sensor 744 on the bracket 743 is triggered, the aluminum foil will deviate. According to the triggered contact sensor 744, it is found that the second screw is slippery. The table 82 makes a driving command to drive the supporting plate 83 fixedly connected to the sliding table to move to another non-triggered contact sensor 744 until the triggered contact sensor 744 is not triggered, thereby completing the automatic winding correction action of the aluminum foil .

The supporting assembly 85 includes a gantry 851, a second driving cylinder 852, a longitudinal moving plate 853, and a third driving cylinder 854. The gantry 851 is vertically fixed on the top of the carrier 81, and the second driving cylinder 852 is vertically fixed. On the top of the gantry 851 and its output end is fixedly connected to the top of the longitudinal moving plate 853, the third driving cylinder 854 is horizontally fixed on the longitudinal moving plate 853 and its output end is fixedly connected to the neat assembly 84, using the third driving cylinder 854 drives the longitudinal moving plate 853 to move in the vertical direction. Under the stable connection of the two fixed arms 844, the second driving cylinder 852 installed on the longitudinal moving plate 853 is fixedly connected to the output end of the second driving cylinder 852 indirectly. The neat component 84 moves in the vertical direction synchronously, so that the real-time leveling action can be performed according to the winding thickness of the aluminum foil.

The neat assembly 84 includes a limit plate 841, a hinge block 842, two arc-shaped leveling blocks 843, two fixed arms 844, and two linkage arms 845. The two arc-shaped leveling blocks 843 are respectively connected to the two linkage arms. The bottom of the front end of the 845 is fixedly connected, and the top of the front end of the two linkage arms 845 are in sliding fit with the limit plate 84]. The two fixed arms 844 are arranged symmetrically, and both ends of each fixed arm 844 are connected to the limit plate 841 and move longitudinally. The plate 853 is fixedly connected, the rear ends of the two linkage arms 845 are fixedly connected to the hinge block 842, the output end of the third driving cylinder 854 is fixedly connected to the hinge block 842, and the second driving cylinder 852 is used to drive the hinge fixedly connected to its output end The block 842 moves, and under the action of the rear ends of the two linkage arms 845 fixedly connected with the hinge seat and the sliding cooperation of the front ends of the two linkage arms 845 with the limit plate 841, the two fixed on the front ends of the two linkage arms 845 The two arc-shaped leveling blocks 843 realize relative or opposite movement in the length direction of the limit plate 841, so as to realize the flattening action on both sides of the aluminum foil after the winding roller 3 completes the winding of the aluminum foil, which reduces manual labor and improves the aluminum foil. Rewinding effect.

The working principle of the present invention: the aluminum foil is unloaded by the unwinding roller 2, and at the same time, the unwinding roller 3 performs the winding action on the aluminum foil, wherein the first traction roller 41, the second traction roller 42, and the third traction roller are used. 43 and the fourth traction roller 44 simultaneously guide the aluminum foil when it is being rewinded. The first screw slide 55 drives the connecting plate 53 fixedly connected to the slide to move down, and drives the first driving motor 54 on the connecting plate 53. The rotating block 52 and the brush plate 51 move down synchronously, so that the brush plate 51 coats the surface of the aluminum foil with K3PO4 solution to complete the coating step of the aluminum foil. When the brush plate 51 needs to be liquid-filled, the first drive motor 54 is used. The driving rotating block 52 drives the brush plate 51 to rotate 180 degrees to make the brush plate 51 deviate from the frame 1. The first screw slide table 55 drives the sliding table to move down, and drives the brush plate 51 to move down to the machine. In the liquid supply tank 56 next to the rack 1, the automatic liquid filling step of the brush plate 51 is completed, and the degree of automation is high. The two first driving cylinders 741 are used to simultaneously drive the rear ends of the two linkage plates 742 to move down. The middle section of the linkage plate 742 is sleeved on the guide rod 71, so that the contact sensors 744 provided on the two brackets 743 on the front ends of the two linkage plates 742 are moved upward to detect the aluminum foil on both sides during winding. When the aluminum foil deviates and triggers a contact sensor 744, the second screw slide 82 drives the supporting plate 83 fixedly connected to the slide to move to the other non-triggered contact sensor 744 until the trigger one When the contact sensor 744 is not triggered, the automatic winding correction of the aluminum foil is completed, which solves the problem of the existing inability to detect the deviation of the aluminum foil, and improves the production quality and efficiency of the product; the third drive motor 721 is used to drive the thread The rod 722 rotates, and under the action of the two reverse threads designed on the threaded rod 722, the two sliding blocks 723 move relative to each other synchronously. Secondly, the middle section of the two linkage plates 742 is sleeved under the design of the guide rod 71 , It can then drive the two interlocking plates 742 fixedly connected to the output ends of the two first driving cylinders 741 to move synchronously, and realize real-time adjustment and detection operations according to the width and size of the aluminum foil, which improves the overall practical performance of the equipment; and The second drive motor 64 drives a synchronous wheel 66 fixedly connected to its output end to rotate, and under the action of the belt 63, drives the rotation shaft 62 fixedly connected to the other synchronous wheel 66 to rotate, and drives the adjustment on the front ends of the two connecting arms 65 The roller 61 rotates, so that the aluminum foil traction tension can be adjusted in real time according to the different ductility of different aluminum foils, which further improves the overall performance of the equipment; the second driving cylinder 852 is used to drive the hinge block 842 fixedly connected to its output end to move, and the two linkage arms 845 The rear end of the two linkage arms 845 is fixedly connected with the hinge seat and the front ends of the two linkage arms 845 are in sliding cooperation with the limit plate 841, so that the two arc-shaped leveling blocks 843 fixed on the front ends of the two linkage arms 845 are in the limit. The longitudinal direction of the plate 841 realizes relative or opposite movement, so as to realize the winding of the aluminum foil by the take-up roller 3 After the completion of the flattening action on both sides, the manual labor is reduced, and the aluminum foil winding effect is improved. Secondly, the longitudinal moving plate 853 is driven to move in the vertical direction by the third driving cylinder 854, which is stable on the two fixed arms 844. Under the connection, the second driving cylinder 852 installed on the longitudinal moving plate 853 and the two arc-shaped leveling blocks 843 fixedly connected indirectly to the output end of the second driving cylinder 852 are synchronized to move in the vertical direction, so as to be able to move in the vertical direction according to the aluminum foil. The winding thickness is leveled in real time, which further improves the overall performance of the equipment. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. Scope.

Claims

An aluminum oxide insulated winding, comprising a conductor and an insulating coating, characterized in that the conductor is aluminum foil, and the insulating coating is a layer grown in situ on the surface of the conductor, including α-Al 2 O 3 and γ-Al 2 O 3 composition; the surface of the conductor is coated with two layers of K 3 PO 4 solution.
A method for preparing an alumina insulated winding according to claim 1, characterized in that it comprises the following steps:

Step 1: Winding the coil; winding aluminum foil on the mold;

Step 2: Coat two layers of 15% K 3 PO 4 solution on the surface of the aluminum foil;

Step 3: Weld the lead bar: the first and last turns of the aluminum foil are welded on the aluminum bar;

Step 4: After the winding is completed, place it in an oven to preheat at 45°C for 30 minutes, so that the surface of the aluminum foil is easily semi-solidified;

Step 5: Place in the plating bath: Place the semi-finished winding of Step 4 in the plating bath, and the electroplating liquid level does not exceed the upper surface of the winding, but does not exceed the aluminum bar;

Step 6: The windings are dried; the windings after electroplating are placed in a drying equipment and kept at 80°C for 2H;

Step 7: Flush the windings with high-pressure air.
The winding equipment of the preparation method according to claim 2, characterized in that it comprises a frame (1), a discharging roller (2), a receiving roller (3), a traction mechanism (4), a coating mechanism (5), The adjustment mechanism (6), the detection mechanism (7) and the toggle mechanism (8), the unwinding roller (2) and the toggle mechanism (8) are respectively installed at the front and rear ends of the frame (1), and the traction mechanism ( 4) Installed in the middle section of the frame (1), the coating mechanism (5) is fixed at a side wall of the frame (1), and the adjustment mechanism (6) is installed on the frame (1) and is located in the traction mechanism ( 4) Next, the detection mechanism (7) is fixed at the rear end of the frame (1) and is located between the traction mechanism (4) and the receiving roller (3). The receiving roller (3) is installed on the toggle mechanism (8). )superior.
The winding device according to claim 3, characterized in that: the traction mechanism (4) comprises a first traction roller (41), a second traction roller (42), a third traction roller (43) and a fourth traction roller (44), the first traction roller (41), the second traction roller (42), the third traction roller (43) and the fourth traction roller (44) are arranged in the frame (1) in sequence along the length direction of the frame (1). 1), the unwinding roller (2), the first traction roller (41) and the second traction roller (42) are arranged in a stepped manner, the second traction roller (42) and the third traction roller (43) are arranged in parallel, and the first The four traction rollers (44) and the receiving roller (3) are arranged in parallel.
The winding device according to claim 4, characterized in that: the coating mechanism (5) comprises a brush plate (51), a rotating block (52), a connecting plate (53), a first driving motor (54), The first screw sliding table (55) and the liquid supply tank (56), the first screw sliding table (55) is vertically fixed on one side of the frame (1), and the brush plate (51) is horizontally arranged at Between the second traction roller (42) and the third traction roller (43), and one end of the brush plate (51) is fixedly connected with the rotating block (52), the connecting plate (53) has an L-shaped structure and is connected to the first wire The sliding table of the rod sliding table (55) is fixedly connected, the first driving motor (54) is installed on the top of the connecting plate (53) and its output end is fixedly connected with the rotating block (52), and the liquid supply tank (56) is set in the machine The side of the shelf (1).
The winding device according to claim 3, characterized in that: the adjusting mechanism (6) comprises a adjusting roller (61), a rotating shaft (62), a belt (63), a second driving motor (64), and two connecting The arm (65) and the two synchronous wheels (66), the two connecting arms (65) are symmetrically fixed on the two ends of the rotating shaft (62), and the front end of each connecting arm (65) is connected to the adjusting roller (61). ) Is fixedly connected at both ends, the second drive motor (64) is horizontally arranged beside the frame (1) and its output end is fixedly connected with a synchronous wheel (66), and the other synchronous wheel (66) is fixed on the rotating shaft ( On one end of 62), the rotating shaft (62) is rotatably installed on the frame (1), and the belt (63) is sleeved on the outside of the two synchronous wheels (66).
The winding device according to claim 3, characterized in that: the detection mechanism (7) comprises a guide rod (71), a driving component (72), two side plates (73) and two monitoring components (74), Two side plates (73) are respectively fixed on both sides of the frame (1), the guide rod (71) is arranged horizontally and its two ends are respectively fixedly connected with the two side plates (73), and two monitoring components (74) It is arranged symmetrically, and the front end of each monitoring component (74) is slidably arranged on the guide rod (71), and the rear end of each monitoring component (74) is fixedly connected with the driving component (72).
The winding device according to claim 7, characterized in that: the driving assembly (72) comprises a third driving motor (721), a threaded rod (722), two sliding blocks (723) and two fixing seats (724) ), the third drive motor (721) is fixed on a side plate (73) and its output end is fixedly connected with one end of the threaded rod (722). The threaded rod (722) is provided with two oppositely arranged threads. Two sliding blocks (723) are symmetrically arranged on both ends of the threaded rod (722), two fixing seats (724) are respectively fixed on the side walls of the two sliding blocks (723), and each monitoring component (74) includes The first driving cylinder (741), the linkage plate (742), the bracket (743) and the contact sensor (744), the first driving cylinder (741) is inclined and its rear end is fixed on a fixed seat (724) , The middle section of the linkage plate (742) is slidably arranged on the guide rod (71), the output end of the first drive cylinder (741) is fixedly connected to the rear end of the linkage plate (742), and the bracket (743) is fixed on the connecting rod (71). On the front end of the movable plate (742), the contact sensor (744) is fixed on the bracket (743).
The winding device according to claim 3, characterized in that: the toggle mechanism (8) comprises a bearing table (81), a second screw sliding table (82), a supporting plate (83), and a neat assembly (84) ) And support assembly (85), the bearing table (81) is fixed at the rear end of the frame (1), the second screw slide table (82) is set on the top of the bearing table (81), and the bearing plate (83) is It is horizontally fixed on the sliding table of the second screw sliding table (82), and the supporting assembly (85) is fixed on the top of the bearing table (81) and located beside the second screw sliding table (82). ) Is fixed on the support assembly (85).
The winding device according to claim 9, characterized in that: the supporting assembly (85) comprises a gantry (851), a second driving cylinder (852), a longitudinal moving plate (853) and a third driving cylinder (854) , The gantry (851) is vertically fixed on the top of the bearing platform (81), the second driving cylinder (852) is vertically fixed on the top of the gantry (851), and its output end is connected to the longitudinal moving plate (853). The top is fixedly connected, the third driving cylinder (854) is horizontally fixed on the longitudinal moving plate (853) and its output end is fixedly connected with the neat assembly (84);

The neat assembly (84) includes a limit plate (841), a hinge block (842), two arc-shaped leveling blocks (843), two fixed arms (844) and two linkage arms (845), two The arc-shaped leveling block (843) is fixedly connected to the bottom of the front end of the two linkage arms (845), the top of the front end of the two linkage arms (845) is slidingly matched with the limit plate (841), and the two fixed arms (844) It is symmetrically arranged and the two ends of each fixed arm (844) are respectively fixedly connected with the limiting plate (841) and the longitudinal moving plate (853), and the rear ends of the two linkage arms (845) are fixed with the hinge block (842) Connected, the output end of the third driving cylinder (854) is fixedly connected with the hinge block (842).