Full-automatic winding device and winding method for nanocrystalline magnetic core

Abstract

The invention relates to the technical field of nanocrystalline magnetic core production, and discloses a nanocrystalline magnetic core full-automatic winding device which comprises a rack, a material disc, a conveying mechanism and a winding mechanism are installed on the rack, nanocrystalline strips are wound on the material disc, the conveying mechanism is used for pulling the nanocrystalline strips to move towards the winding mechanism, and the winding mechanism is used for winding the nanocrystalline strips. The winding mechanism comprises an external cutting welding assembly and an internal rolling welding assembly, during use, the external cutting welding assembly receives the nanocrystalline strip and enables the end of the nanocrystalline strip to make contact with the outer circle face of the internal rolling welding assembly, the internal rolling welding assembly sucks the nanocrystalline strip in a negative pressure adsorption mode, then the internal rolling welding assembly rotates to achieve the winding action, and the nanocrystalline strip is wound through the external cutting welding assembly while winding is conducted. And spot welding is carried out on the wound material coil from the inside, so that different layers of the material coil are fixed through spot welding, after winding is completed, the nanocrystalline strip is cut off through the external cutting welding assembly, and spot welding is carried out on the cut-off position after winding is completed at the cut-off position.

Description

Technical Field

[0001] The invention relates to the technical field of nanocrystalline magnetic core production, and in particular to a fully automatic winding device and a winding method for a nanocrystalline magnetic core. Background Art

[0002] Nanocrystalline magnetic cores are widely used in inductors, filters and other fields. During the production and assembly process of nanocrystalline magnetic cores, the end of the nanocrystalline ribbon needs to be fixed on the winding rod, and then after winding a certain length, the nanocrystalline ribbon is cut, and then the cut is welded and fixed, and finally the nanocrystalline magnetic core roll is removed from the winding rod.

[0003] Based on the nanocrystalline strip winding mentioned above, the authorization announcement number CN118156023B was found after searching, which discloses a nanocrystalline magnetic core winding machine. Through the setting of the alternating winding mechanism, off-line welding and unloading operations can be realized. When the material roll is welded and unloaded at the off-line operation point, the winding point can continue the winding operation without stopping and waiting, which greatly improves the production capacity. However, it still has some shortcomings. For example: it realizes non-stop winding operation by alternating the winding ring of the full roll and the winding ring of the empty roll. However, when changing the roll, it is necessary to move the winding ring of the full roll from the winding point c to the off-line operation point d, and the shear cylinder retracts. The winding ring of the empty roll is no longer blocked, and the slider 2 is pulled outward by the spring, and the synchronous belt connects the rotating rod and the winding ring of the empty roll. It is pulled from the material changing point b to the coiling point c for the winding operation. During this process, it takes a certain amount of time to exchange the positions of the winding ring of the full roll and the winding ring of the empty roll. Although it can be achieved without stopping and waiting, the winding operation still needs to be interrupted for a while when the winding rings alternate. During the movement of the full winding ring, since the material roll is not welded, it is only fixed by squeezing the end at the corner of the shear groove. The material roll is generally wound in multiple layers. The fixing method of simply squeezing the end can easily cause positional offsets between different layers of the material roll during movement. During welding, the material roll and the winding ring are gradually separated, but a part of the winding ring is still located in the center of the material roll. In this way, there is relative movement between the material roll and the winding ring, which is also easy to cause positional offsets between different layers of the material roll.

[0004] Based on the above, the present invention proposes a fully automatic winding device and winding method for a nanocrystalline magnetic core. Summary of the invention

[0005] In order to solve the problems mentioned in the above background, the present invention provides a fully automatic winding device and winding method for a nanocrystalline magnetic core.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0007] A fully automatic winding device for nanocrystalline magnetic cores comprises a frame, on which a material tray, a conveying mechanism and a winding mechanism are installed. The material tray is wound with a nanocrystalline strip, the conveying mechanism is used to pull the nanocrystalline strip to move toward the winding mechanism, and the winding mechanism comprises an external cutting welding component and an internal rolling welding component. When in use, the external cutting welding component receives the nanocrystalline strip and makes its end contact with the outer cylindrical surface of the internal rolling welding component, the internal rolling welding component absorbs the nanocrystalline strip by negative pressure adsorption, and then the internal rolling welding component rotates to realize the winding action. While winding, the material coil formed by winding is spot welded from the inside so that different layers of the material coil are fixed by spot welding. After the winding is completed, the nanocrystalline strip is cut by the external cutting welding component and the cut portion is spot welded after the winding is completed.

[0008] Furthermore, the external cutting welding assembly includes a mounting component, and two groups of mounting components are arranged along the conveying direction of the conveying mechanism. The mounting component includes an outer cover shell slidably installed on the frame along the vertical direction, an inner slider is provided in the outer cover shell, and a second spring is provided between the two, and the elastic force of the second spring drives the inner slider to move downward, and a bottom rod extends from the lower end surface of the inner slider, an outer welding needle is provided on the upper end surface of the inner slider of one group of mounting components, and a cutting knife is provided on the upper end surface of the inner slider of another group of mounting components, and an avoidance opening for avoiding the external welding needle or the cutting knife is provided on the upper end surface of the outer cover shell. When the cutting knife completes cutting the nanocrystalline strip, the external welding needle is still located in the outer cover shell, and an anvil board located directly above the cutting knife is installed on the frame, and a blade for avoiding the cutting knife is provided on the anvil board.

[0009] Furthermore, a connecting bridge is arranged between the outer cover shells of the two groups of mounting components, a side bridge is extended from the side of the outer cover shell of the mounting component provided with the cutter, the end of the side bridge is close to the discharge end of the conveying mechanism, and the upper end surface of the connecting bridge, the upper end surface of the outer cover shell and the upper end surface of the side bridge are flush.

[0010] Furthermore, a connecting bracket is connected between the bottom rods of the two groups of mounting components, and the connecting bracket is driven by the linear module set on the frame to move in the vertical direction.

[0011] Furthermore, the internal winding welding assembly includes a winding rod horizontally installed on the frame and located above a mounting component on which an external welding needle is provided. One end of the winding rod is open and the other end is closed. The winding rod is poweredly connected to a motor 3 provided on the frame. Guide holes and air holes are radially provided on the outer cylindrical surface of the winding rod. Several guide holes and air holes are arranged in an array along the circumferential direction of the winding rod.

[0012] Furthermore, the internal coil welding assembly also includes a threaded shaft that is coaxial with the winding rod and hollow inside. One end of the threaded shaft extends into the winding rod and is provided with a driving seat, and the other end is provided with a connecting pipe. The threaded shaft is slidably connected to the frame, and the threaded shaft is powered by a power connector to a motor 2 arranged on the frame. The driven part of the power connector is threadedly connected to the threaded shaft and is restricted to only rotate.

[0013] Furthermore, a slide seat is sleeved in each guide hole, and the side of the slide seat facing away from the winding rod is in an arc shape. Initially, the arc surface of the slide seat is coaxial and equal in diameter to the outer cylindrical surface of the winding rod. A part of the slide seat extends into the winding rod and a spring three is arranged between the two. The elastic force of the spring three is used to drive the slide seat to move close to the axis of the winding rod. Initially, the spring three is compressed.

[0014] A slope three is arranged on the side of the driving seat facing the slide seat, and a slope four is arranged on the slide seat to fit with the slope three. When the threaded shaft moves close to the closed end of the winding roller, the cooperation between the slope three and the slope four can drive the slide seat to move away from the axis center line of the winding roller.

[0015] Furthermore, a mounting hole is provided through the end surface of the slide seat, an insulating sleeve is installed in the mounting hole, an inner welding pin is provided in the insulating sleeve, and a mounting bracket is provided at one end of the inner welding pin facing the axis of the winding rod;

[0016] An inner bracket is installed in the winding roller, and a sliding fit is formed between the mounting bracket and the inner bracket, and the sliding direction of the mounting bracket is parallel to the sliding direction of the slide seat. A spring 5 is arranged between the mounting bracket and the inner bracket, and the elastic force of the spring 5 drives the mounting bracket to move close to the axis of the winding roller;

[0017] The end of the threaded shaft extending into the winding roller is provided with an internal step, a driving rod is sleeved in the internal step, one end of the driving rod extends into the threaded shaft and is provided with a limit ring, and the other end is provided with an external step, the outside of the driving rod is slidably connected with a driving bracket, and a spring four is provided between the driving bracket and the external step;

[0018] The driving bracket is provided with a slope five, and the mounting bracket is provided with a slope six. The slope five is in contact with the slope six. When the threaded shaft moves away from the closed end of the winding roller, the mounting bracket can be driven to move away from the axis of the winding roller through the cooperation of the slope five and the slope six.

[0019] Furthermore, an end cover is provided at the open end of the winding roll, a through hole for avoiding the threaded shaft is provided on the end cover, the end cover is connected to the frame through a bearing, a connecting shaft in the form of a hollow shaft is extended from the end surface of the end cover, and the connecting shaft is dynamically connected to the motor;

[0020] A threaded sleeve is installed in the connecting shaft through a bearing, the threaded sleeve and the threaded shaft form a threaded connection, the second motor and the threaded sleeve form a power connection, and a negative pressure pump is connected through the end of the connecting pipe.

[0021] Furthermore, the outer sleeve of the winding roller is provided with a push sleeve, and a linear module 2 for driving the push sleeve to move is installed on the frame.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present application can realize the winding, cutting and welding of nanocrystalline strips at one time. Furthermore, during the winding, the material coil is spot welded from the inside, so that different layers of the material tube are fixed by spot welding. After the winding is completed, the cut part is spot welded from the outside. Compared with the prior art mentioned in the background technology:

[0024] In the prior art, after the winding is completed, the winding ring of the full roll and the winding ring of the empty roll are alternately used to realize the non-stop winding operation, and then the coil after winding is welded. In the present application, the coil is spot welded from the inside while winding, and finally only the spot welding action of the cut-off point is realized from the outside and the coil is pushed down. Therefore:

[0025] 1. The winding actions of the prior art and the present application are the same, both of which are achieved by rotation. The difference lies in the alternating action of the prior art and the action of pushing down the spot welding feed roll of the present application. Specifically:

[0026] In the prior art, the alternating action of the winding ring of the full roll and the winding ring of the empty roll includes a sub-action 1 in which the winding ring of the full roll moves from the winding point c to the off-line operation point d, and a sub-action 2 in which the spring pulls the winding ring of the empty roll from the material change point b to the winding point c.

[0027] In this application, the spot welding action at the cut-off point and the action of pushing the coil down are included;

[0028] As is known to all, spot welding is a fast action, which can generally be completed in a few tenths of a second. Therefore, there is little difference in the winding efficiency between the prior art and the present application.

[0029] 2. Since the present application completes the winding and welding of the material coil and then pushes it off the winding roller, the problem of "easy positional offset between different layers of the material coil" mentioned in the background technology is solved;

[0030] 3. In the present application, when spot welding is realized on the material coil from the inside, the slide is first driven to move to leave a part of space at the spot welding location, and then the spot welding needle is moved to realize spot welding. The advantage is that spot welding will generate a lot of heat, and leaving a part of space is conducive to heat dissipation and the spot welding result. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 It is a schematic diagram of the conveying mechanism and the winding mechanism;

[0033] Figure 3 It is a front schematic diagram of the conveying mechanism;

[0034] Figure 4 It is a reverse schematic diagram of the conveying mechanism;

[0035] Figure 5 is a schematic diagram of the winding mechanism;

[0036] Figure 6 It is a cross-sectional view of an externally cut welding assembly;

[0037] Figure 7 It is a schematic diagram of the structure of the inner coil welding component during winding;

[0038] Figure 8 It is a schematic diagram of the structure of the inner coil welding component during spot welding;

[0039] Fig. 9 This is an exploded view of the inner coil welding assembly;

[0040] Fig.10 It is a schematic diagram of the interior of the inner coil welding component;

[0041] Fig.11 It is a partial cross-sectional view of an inner coil welding component;

[0042] Fig.12 It is a cross-sectional view of the threaded shaft and the winding rod.

[0043] The reference numerals in the accompanying drawings are:

[0044] 100, frame; 101, material tray; 102, guide wheel; 103, material guide plate; 104, push sleeve; 105, linear module 2; 200, conveying mechanism; 201, conveying bracket; 202, spring 1; 203, closing seat; 204, linear module 1; 205, synchronous belt; 206, transmission shaft; 207, motor 1; 208, tensioning component; 300, winding mechanism; 301, motor 2; 302, motor 3; 303, linear module 3; 304, connecting bracket; 305, external cutting welding assembly; 3051, outer cover shell; 3052, inner slider; 3053, spring 2; 3054, bottom rod; 3055, connecting bridge; 3056, side bridge; 3057, chopping board; 3058, external welding pin; 3059, cutting knife; 306, internal coil welding assembly; 307, winding stick; 3071, guide hole; 3072, air hole; 308, through-hole slip ring; 309, threaded shaft; 310, connecting pipe; 311, driving seat; 312, sliding seat; 313, spring three; 314, inner bracket; 315, driving rod; 316, spring four; 317, mounting bracket; 318, spring five; 319, internal welding pin; 320, driving bracket; 321, end cover; 322, threaded sleeve. DETAILED DESCRIPTION

[0045] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0046] Reference Figure 1-Figure 12 , a fully automatic winding device for nanocrystalline magnetic cores, comprising a frame 100, on which a material tray 101, a conveying mechanism 200 and a winding mechanism 300 are installed, a guide wheel 102 is installed on one side of the feeding end of the conveying mechanism 200, and a nanocrystalline ribbon is wound on the material tray 101. When in use, the free end of the nanocrystalline ribbon is passed around the guide wheel 102 and inserted into the conveying mechanism 200, clamped by the conveying mechanism 200, and then the nanocrystalline ribbon is pulled by the conveying mechanism 200 to move into the winding mechanism 300, and the nanocrystalline ribbon is wound by the winding mechanism 300. While winding, the winding mechanism 300 also performs internal spot welding on the material roll formed by winding, so that different layers of the material roll are spot welded and fixed, and at the end of winding, the winding mechanism 300 performs spot welding on the outer cut of the material roll to fix it, so that the winding production of a nanocrystalline magnetic core is completed, and finally, the nanocrystalline magnetic core is pushed down from the winding mechanism 300.

[0047] Conveying mechanism 200:

[0048] Reference Figure 3 and Figure 4The conveying mechanism 200 includes a conveying bracket 201 slidably installed on the frame 100 along the vertical direction, two conveying brackets 201 are arranged in the vertical direction, and a spring 202 is arranged between the two conveying brackets 201, a closing seat 203 and a linear module 204 that drives the closing seat 203 to move closer to or away from the conveying bracket 201 are installed on the frame 100, the closing seat 203 is composed of two inclined planes 1 on the side facing the conveying bracket 201, the distance between the two inclined planes 1 increases along the direction in which the closing seat 203 moves closer to the conveying bracket 201, and the conveying bracket 201 is provided with an inclined plane 2 that is in contact with the inclined plane 1; when the linear module 204 drives the closing seat 203 to move closer to the conveying bracket 201, the two conveying brackets 201 can move closer to each other through the cooperation of the inclined planes 1 and the inclined planes 2, and vice versa, the spring 1 202 releases the elastic force, so that the two conveying brackets 201 move away from each other.

[0049] A synchronous belt 205 is installed on each conveying bracket 201, and a vertically arranged transmission shaft 206 and a motor 207 connected to the transmission shaft 206 are installed on the frame 100. A power transmission component is arranged between the transmission shaft 206 and the synchronous belt 205, and the active component of the power transmission component is installed on the transmission shaft 206 through a spline. When the active component moves with the conveying bracket 201, the transmission shaft 206 continuously outputs power to the active component through the spline, that is, the synchronous belt 205 can be driven to run through the motor 207.

[0050] First, the two conveying brackets 201 are moved away from each other, and then the free end of the nanocrystalline ribbon is passed around the guide wheel 102 and inserted between the two synchronous belts 205. Then, the two conveying brackets 201 are driven to move towards each other to clamp the nanocrystalline ribbon. After that, the nanocrystalline ribbon can be pulled to move by the operation of the synchronous belt 205.

[0051] Furthermore, in order to prevent the nanocrystalline ribbon from being loose and affecting the subsequent winding, a tensioning component 208 can be installed on one side of the feeding end of the synchronous belt 205. Specifically, the tensioning component 208 includes two rotating rods parallel to the width direction of the synchronous belt 205 and arranged up and down, one rotating rod is rotatably installed on the frame 100, and the other rotating rod is installed on the movable bracket. The movable bracket and the frame 100 form a sliding fit along the vertical direction and a spring 6 is arranged between the two, and the spring drives the movable bracket to approach the rotating rod installed on the frame 100; the free end of the nanocrystalline ribbon passes through the two rotating rods and is inserted between the two synchronous belts 205. Thereafter, in the process of the synchronous belt 205 pulling the nanocrystalline ribbon to move, since the tensioning component 208 has a certain clamping force on the nanocrystalline ribbon, if the nanocrystalline ribbon is loose, then the synchronous belt 205 can pull the nanocrystalline ribbon to move, so that it can be straightened.

[0052] Winding mechanism 300:

[0053] Reference Figure 5-Figure 12 The winding mechanism 300 includes an external cutting welding component 305 and an internal coiling welding component 306. The latter is used to receive the nanocrystalline strip and wind it, and to perform internal spot welding on the coil formed by winding so that different layers of the coil are spot welded and fixed. The former is used to cut the nanocrystalline strip and perform spot welding on the cut portion after winding is completed.

[0054] Reference Figure 6 The external cutting welding assembly 305 includes mounting components, and two groups of mounting components are arranged along the conveying direction of the conveying mechanism 200.

[0055] The mounting components include an outer cover shell 3051 slidably mounted on the frame 100 in the vertical direction, an inner slider 3052 is sleeved in the outer cover shell 3051, and a spring 3053 is arranged between the two, and its elastic force is used to drive the inner slider 3052 to move downward, and a bottom rod 3054 extends from the lower end surface of the inner slider 3052. The upper end surface of the inner slider 3052 of one group of mounting components is provided with an outer welding pin 3058, and the upper end surface of the inner slider 3052 of another group of mounting components is provided with a cutter 3059. The upper end surface of the outer cover shell 3051 is provided with an avoidance opening for avoiding the external welding needle 3058 or the cutter 3059. In addition, initially, the upper end height of the cutter 3059 is higher than the upper end height of the external welding needle 3058. When the cutter 3059 completes cutting of the nanocrystalline strip, the external welding needle 3058 is still located in the outer cover shell 3051. In addition, a cutting board 3057 located directly above the cutter 3059 is installed on the frame 100, and a blade for avoiding the cutter 3059 is provided on the cutting board 3057.

[0056] A connecting bridge 3055 is provided between the outer cover shells 3051 of the two groups of mounting components, and the upper end surface of the connecting bridge 3055 is flush with the upper end surface of the outer cover shell 3051; a side bridge 3056 is extended from the side of the mounting component provided with the cutting knife 3059, and the upper end surface of the side bridge 3056 is flush with the upper end surface of the outer cover shell 3051, and the end of the side bridge 3056 is close to the discharge end of the conveying mechanism 200; in the process of the conveying mechanism 200 pulling the nanocrystalline ribbon to move, the nanocrystalline ribbon is supported by the side bridge 3056, the outer cover shell 3051 and the connecting bridge 3055, and is finally located on the outer cover shell 3051 of the mounting component provided with the external welding needle 3058.

[0057] Further, see Figure 5A connecting bracket 304 is connected between the bottom rods 3054 of the two sets of mounting components. The connecting bracket 304 is driven by the linear module three 303 arranged on the frame 100 and moves in the vertical direction. During the upward movement, the outer cover shell 3051 will be moved upward at the beginning through the spring two 3053. When the anvil plate 3057 hinders the outer cover shell 3051 from moving upward, the cutter 3059 will first cut the nanocrystalline strip, and then the connecting bracket 304 will move down. After the inner coil welding assembly 306 winds the remaining nanocrystalline strip, the connecting bracket 304 will move up again, and the outer welding needle 3058 will spot weld the cut part of the material roll formed by the winding. After spot welding, the connecting bracket 304 will move down, and the outer cutting welding assembly 305 will be reset. Then, the conveying mechanism 200 will continue to pull the nanocrystalline strip to move for the next winding.

[0058] Reference Figure 7-Figure 11 The inner coil welding assembly 306 includes a winding roller 307 installed on the frame 100 and parallel to the bandwidth direction of the synchronous belt 205. One end of the winding roller 307 is open and the other end is closed. The winding roller 307 is driven to rotate by the motor 302 arranged on the frame 100. The outer cylindrical surface of the winding roller 307 is radially provided with guide holes 3071 and air holes 3072, wherein a plurality of guide holes 3071 are arranged in an array along the circumferential direction of the winding roller 307, and the present application shows four of them, and a plurality of air holes 3072 are arranged in an array along the arc length direction of the winding roller 307 between two adjacent air holes 3072.

[0059] The inner coil welding assembly 306 also includes a threaded shaft 309 which is coaxial with the winding rod 307 and is hollow inside. One end of the threaded shaft 309 extends into the winding rod 307 and is provided with a driving seat 311, and the other end is provided with a connecting pipe 310. In addition, the threaded shaft 309 is slidably connected with the frame 100. For example, a sliding groove is provided on the outer cylindrical surface of the threaded shaft 309 along the axial centerline direction, and the sliding groove and the sliding protrusion provided on the frame 100 form a sliding fit. The threaded shaft 309 and the motor 2 301 provided on the frame 100 are powered by a power connecting member. The driven member of the power connecting member is threadedly connected to the threaded shaft 309 and the driven member is restricted to only rotate. Therefore, the threaded shaft 309 can be driven to move along its own axial centerline direction by the motor 2 301.

[0060] A slide 312 is sleeved in each guide hole 3071, and the side of the slide 312 facing away from the winding roller 307 is in an arc shape. Initially, the arc surface of the slide 312 blocks the opening of the guide hole 3071 and is coaxial and equidiametric with the outer cylindrical surface of the winding roller 307. A part of the slide 312 extends into the winding roller 307 and a spring three 313 is arranged between the two. The elastic force of the spring three 313 is used to drive the slide 312 to move close to the axis of the winding roller 307. Initially, the spring three 313 is compressed.

[0061] A slope three is provided on the side of the driving seat 311 facing the sliding seat 312, and a slope four is provided on the sliding seat 312 to fit with the slope three. When the threaded shaft 309 moves close to the closed end of the winding roller 307, the cooperation between the slope three and the slope four can drive the sliding seat 312 to move away from the axis of the winding roller 307.

[0062] The end surface of the slide seat 312 is penetrated with a mounting hole, an insulating sleeve is installed in the mounting hole, an inner welding pin 319 is arranged in the insulating sleeve, and a mounting bracket 317 is arranged at one end of the inner welding pin 319 facing the axis line of the winding rod 307.

[0063] An inner bracket 314 is installed inside the winding roller 307, and a sliding fit is formed between the mounting bracket 317 and the inner bracket 314, and the sliding direction of the mounting bracket 317 is parallel to the sliding direction of the slide seat 312. A spring 318 is arranged between the mounting bracket 317 and the inner bracket 314, and its elastic force drives the mounting bracket 317 to move close to the axis line of the winding roller 307.

[0064] The end of the threaded shaft 309 extending into the winding roller 307 is provided with a built-in step, and a driving rod 315 is sleeved in the built-in step. One end of the driving rod 315 extends into the threaded shaft 309 and is provided with a limiting ring, and the other end is provided with an external step. The outside of the driving rod 315 is slidably connected to a driving bracket 320, and a spring 316 is provided between the driving bracket 320 and the external step.

[0065] The driving bracket 320 is provided with a slope five, and the mounting bracket 317 is provided with a slope six. The slope five is in contact with the slope six. When the threaded shaft 309 moves away from the closed end of the winding roller 307, the mounting bracket 317 can be driven to move away from the axis of the winding roller 307 through the cooperation of the slope five and the slope six.

[0066] Reference Fig.12 The open end of the winding roller 307 is provided with an end cover 321, and the end cover 321 is provided with a through hole for avoiding the threaded shaft 309. The end cover 321 is connected to the frame 100 through a bearing. A connecting shaft in the form of a hollow shaft extends from the end face of the end cover 321, and the connecting shaft is dynamically connected to the motor three 302.

[0067] A threaded sleeve 322 is installed in the connecting shaft through a bearing, and the threaded sleeve 322 and the threaded shaft 309 form a threaded connection, and the motor 2 301 and the threaded sleeve 322 form a power connection. In this way, it is connected to the negative pressure pump through the connecting pipe 310, and the air in the winding roller 307 can be sucked through the negative pressure pump to form a negative pressure at the air hole 3072.

[0068] In addition, when the inner welding needle 319 is welded, it needs to be energized, and the winding rod 307 needs to rotate. Therefore, a through-hole slip ring 308 can be set on the outside of the winding rod 307 to energize the inner welding needle 319.

[0069] Reference Figure 5 The outer sleeve of the winding roller 307 is provided with a push sleeve 104, and the frame 100 is equipped with a linear module 105 for driving the push sleeve 104 to move and a material guide plate 103 located below the winding roller 307. After the winding is completed, the material roll is pushed off the winding roller 307 by the push sleeve 104 and guided for output through the material guide plate 103.

[0070] A winding method of a nanocrystalline magnetic core fully automatic winding device:

[0071] Step 1: The nanocrystalline ribbon is pulled and moved by the conveying mechanism 200. During the movement, the nanocrystalline ribbon is supported by the side bridge 3056, the outer cover shell 3051, and the connecting bridge 3055, and finally lies on the outer cover shell 3051 of the mounting component provided with the outer welding pin 3058;

[0072] Step 2: The connecting bracket 304 is driven to move upward by the linear module 303, and the connecting bracket 304 moves upward with the bottom rod 3054 and the inner slider 3052, and the inner slider 3052 moves upward with the outer cover shell 3051 through the spring 2 3053, so that the end of the nanocrystalline ribbon is lifted to contact with the winding roller 307, and at the same time, the negative pressure pump is started to form a negative pressure at the air hole 3072 to absorb the nanocrystalline ribbon;

[0073] Step 3: The motor 302 drives the winding roller 307 to rotate to wind the nanocrystalline ribbon, and at the same time, the linear module 303 drives the connecting bracket 304 to move downward;

[0074] During the winding process, each time a circle of winding is completed, the motor 2 301 is started to drive the threaded shaft 309 to move away from the closed end of the winding roller 307. During the moving away process, first, the spring 313 releases its elastic force to move the slide 312 close to the axis of the winding roller 307, and then the built-in step contacts the limit ring, and the threaded shaft 309 moves with the driving rod 315, and the spring 4 316 pulls the driving bracket 320 to move together, thereby driving the mounting bracket 317 to move away from the axis of the winding roller 307, and the mounting bracket 317 moves with the inner welding needle 319 to realize spot welding of the material coil wound on the coiling roller 307, so that different layers of the material coil are fixed by spot welding;

[0075] Step 4: After the conveying mechanism 200 conveys the nanocrystalline ribbon to move a preset distance, the winding is suspended, and the connecting bracket 304 is driven to move upward by the linear module 303. During the upward movement, the connecting bracket 304 first moves upward with the bottom rod 3054, the inner slider 3052, the second spring 3053, and the outer cover shell 3051. When the outer cover shell 3051 is restricted by the anvil 3057 or the winding rod 307 and cannot move upward, the connecting bracket 304 continues to move upward with the cutter 3059 to cut the nanocrystalline ribbon;

[0076] Step 5: Continue winding. After the remaining nanocrystalline strip is wound, the connecting bracket 304 moves up again, and the external welding needle 3058 spot welds the cut portion of the coil formed by winding. After spot welding, the connecting bracket 304 moves down, and the external cutting welding assembly 305 is reset. At the same time, the push sleeve 104 is driven to move by the linear module 105 to push the coil off the coiling rod 307.

[0077] Step 6: Repeat steps 1 to 5.

[0078] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fully automatic winding device for nanocrystalline magnetic cores, comprising a frame (100), characterized in that: A material tray (101), a conveying mechanism (200) and a winding mechanism (300) are installed on the frame (100). A nanocrystalline strip is wound on the material tray (101). The conveying mechanism (200) is used to pull the nanocrystalline strip to move toward the winding mechanism (300). The winding mechanism (300) includes an external cutting welding component (305) and an internal winding welding component (306). When in use, the external cutting welding component (305) receives the nanocrystalline strip and makes its end contact with the outer cylindrical surface of the internal winding welding component (306). The internal winding welding component (306) absorbs the nanocrystalline strip by negative pressure adsorption. Then, the internal winding welding component (306) rotates to realize the winding action. While winding, the material coil formed by winding is spot welded from the inside so that different layers of the material coil are fixed by spot welding. After the winding is completed, the nanocrystalline strip is cut by the external cutting welding component (305) and the cut portion is spot welded after the winding is completed.

2. The fully automatic winding device for nanocrystalline magnetic cores according to claim 1, characterized in that: The external cutting welding assembly (305) includes a mounting component, and two groups of mounting components are arranged along the conveying direction of the conveying mechanism (200). The mounting component includes an outer cover shell (3051) slidably mounted on the frame (100) along the vertical direction, an inner slider (3052) is sleeved in the outer cover shell (3051), and a second spring (3053) is arranged between the two. The elastic force of the second spring (3053) drives the inner slider (3052) to move downward, and a bottom rod (3054) extends from the lower end surface of the inner slider (3052). The upper end surface of the inner slider (3052) of one group of mounting components is provided with an outer The outer cover shell (3051) is provided with a clearance opening for avoiding the outer welding needle (3058) or the cutter (3059); after the cutter (3059) completes the cutting of the nanocrystalline strip, the outer welding needle (3058) is still located in the outer cover shell (3051); and a cutting board (3057) located directly above the cutter (3059) is installed on the frame (100); and a blade for avoiding the cutter (3059) is provided on the cutting board (3057).

3. The fully automatic winding device for nanocrystalline magnetic core according to claim 2, characterized in that: A connecting bridge (3055) is provided between the outer cover shells (3051) of the two groups of mounting components, and a side bridge (3056) is extended from the side of the outer cover shell (3051) of the mounting component provided with the cutter (3059), the end of the side bridge (3056) is close to the discharge end of the conveying mechanism (200), and the upper end surface of the connecting bridge (3055), the upper end surface of the outer cover shell (3051) and the upper end surface of the side bridge (3056) are flush.

4. The fully automatic winding device for nanocrystalline magnetic cores according to claim 3, characterized in that: A connecting bracket (304) is connected between the bottom rods (3054) of the two groups of mounting components. The connecting bracket (304) is driven by a linear module group 3 (303) arranged on the frame (100) to move in a vertical direction.

5. The fully automatic winding device for nanocrystalline magnetic cores according to claim 3, characterized in that: The internal coil welding assembly (306) includes a mounting component horizontally mounted on the frame (100) and located above the mounting component on which the external welding needle (3058) is provided. One end of the winding roller (307) is open and the other end is closed. The winding roller (307) is power-connected with the motor 3 (302) provided on the frame (100). The outer cylindrical surface of the winding roller (307) is radially provided with guide holes (3071) and air holes (3072). A plurality of guide holes (3071) and air holes (3072) are arranged in an array along the circumferential direction of the winding roller (307).

6. The fully automatic winding device for nanocrystalline magnetic cores according to claim 5, characterized in that: The inner coil welding assembly (306) also includes a threaded shaft (309) which is coaxial with the winding rod (307) and hollow inside. One end of the threaded shaft (309) extends into the winding rod (307) and is provided with a driving seat (311), and the other end is provided with a connecting pipe (310). The threaded shaft (309) is slidably connected to the frame (100). The threaded shaft (309) and the second motor (301) provided on the frame (100) are connected to the power through a power connecting member. The driven member of the power connecting member is threadedly connected to the threaded shaft (309) and the driven member is restricted to only be able to rotate.

7. The fully automatic winding device for nanocrystalline magnetic cores according to claim 6, characterized in that: A slide seat (312) is sleeved in each guide hole (3071), and the side of the slide seat (312) facing away from the winding roller (307) is in an arc shape. Initially, the arc surface of the slide seat (312) is coaxial and equal in diameter to the outer cylindrical surface of the winding roller (307). A portion of the slide seat (312) extends into the winding roller (307) and a spring three (313) is arranged between the two. The elastic force of the spring three (313) is used to drive the slide seat (312) to move close to the axis of the winding roller (307). Initially, the spring three (313) is compressed. A slope three is provided on the side of the driving seat (311) facing the sliding seat (312), and a slope four is provided on the sliding seat (312) to fit with the slope three. When the threaded shaft (309) moves close to the closed end of the winding roller (307), the cooperation between the slope three and the slope four can drive the sliding seat (312) to move away from the axis of the winding roller (307).

8. The fully automatic winding device for nanocrystalline magnetic cores according to claim 7, characterized in that: The end surface of the slide seat (312) is penetrated with a mounting hole, an insulating sleeve is installed in the mounting hole, an inner welding pin (319) is arranged in the insulating sleeve, and a mounting bracket (317) is arranged at one end of the inner welding pin (319) facing the axis of the winding rod (307); An inner bracket (314) is installed in the winding roller (307), a sliding fit is formed between the mounting bracket (317) and the inner bracket (314), and a sliding direction of the mounting bracket (317) is parallel to a sliding direction of the slide seat (312), and a spring (318) is arranged between the mounting bracket (317) and the inner bracket (314), and the elastic force of the spring (318) drives the mounting bracket (317) to move close to the axis of the winding roller (307); The end of the threaded shaft (309) extending into the winding roller (307) is provided with an internal step, and a driving rod (315) is sleeved in the internal step. One end of the driving rod (315) extends into the threaded shaft (309) and is provided with a limit ring, and the other end is provided with an external step. The outside of the driving rod (315) is slidably connected to a driving bracket (320), and a spring (316) is provided between the driving bracket (320) and the external step. The driving bracket (320) is provided with a bevel five, and the mounting bracket (317) is provided with a bevel six, and the bevel five fits with the bevel six. When the threaded shaft (309) moves away from the closed end of the winding roller (307), the bevel five cooperates with the bevel six to drive the mounting bracket (317) to move away from the axis of the winding roller (307).

9. A fully automatic winding device for nanocrystalline magnetic cores according to claim 6 or 8, characterized in that: The open end of the winding roller (307) is provided with an end cover (321), and a through hole for avoiding the threaded shaft (309) is provided on the end cover (321). The end cover (321) is connected to the frame (100) through a bearing. A connecting shaft in the form of a hollow shaft extends from the end surface of the end cover (321), and the connecting shaft is connected to the motor three (302) in a power connection. A threaded sleeve (322) is installed in the connecting shaft through a bearing, the threaded sleeve (322) and the threaded shaft (309) form a threaded connection, the motor 2 (301) and the threaded sleeve (322) form a power connection, and a negative pressure pump is connected through the end of the connecting pipe (310).

10. The fully automatic winding device for nanocrystalline magnetic cores according to claim 8, characterized in that: The outer sleeve of the winding roller (307) is provided with a push sleeve (104), and a linear module set 2 (105) for driving the push sleeve (104) to move is installed on the frame (100).

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