A fully automatic winding device and winding method for nanocrystalline magnetic cores

Abstract

The invention relates to the technical field of nanocrystalline magnetic core production, and discloses a fully automatic winding device for nanocrystalline magnetic cores, comprising a frame, a material tray, a conveying mechanism and a winding mechanism installed on the frame, a nanocrystalline strip wound on the material tray, 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 sucks the nanocrystalline strip by negative pressure adsorption, and then the internal rolling welding component rotates to realize the winding action. While winding, the material roll formed by winding is spot welded from the inside, so that different layers of the material roll are fixed by spot welding. After the winding is completed, the nanocrystalline strip is cut by the external cutting welding component and the cutting part is spot welded after the winding is completed.

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, comprising a frame, on which a material tray, a conveying mechanism and a winding mechanism are installed. A nanocrystalline strip is wound on the material tray. The conveying mechanism is used to traction the nanocrystalline strip to move towards the winding mechanism. The winding mechanism includes an outer cutting and welding assembly and an inner winding and welding assembly. When in use, the outer cutting and welding assembly receives the nanocrystalline strip and makes its end contact with the outer cylindrical surface of the inner winding and welding assembly. The inner winding and welding assembly sucks the nanocrystalline strip by means of negative pressure adsorption. Then, the inner winding and welding assembly rotates to achieve the winding action. While winding, spot welding is carried out on the formed coil from the inside to fix different layers of the coil by spot welding. After winding is completed, the nanocrystalline strip is cut by the outer cutting and welding assembly and spot welding is carried out at the cutting place after winding is completed at the cutting place.

[0008] Further, the outer cutting and welding assembly includes a mounting component. There are two groups of mounting components arranged along the conveying direction of the conveying mechanism. The mounting component includes an outer cover shell slidably mounted on the frame in the vertical direction. An inner slider is sleeved in the outer cover shell and a second spring is arranged between them. The elastic force of the second spring drives the inner slider to move downward. A bottom rod extends from the lower end surface of the inner slider. An outer welding needle is arranged on the upper end surface of the inner slider of one group of mounting components, and a cutter is arranged on the upper end surface of the inner slider of the other group of mounting components. An avoidance opening for avoiding the outer welding needle or the cutter is arranged on the upper end surface of the outer cover shell. When the cutter completes cutting the nanocrystalline strip, the outer welding needle is still located inside the outer cover shell. An anvil is mounted on the frame directly above the cutter, and a cutting edge for avoiding the cutter is arranged on the anvil.

[0009] Further, a connecting bridge is arranged between the outer cover shells of the two groups of mounting components. A side bridge extends from the side surface 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. The upper end surfaces of the connecting bridge, the outer cover shell and the side bridge are flush.

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

[0011] Further, the inner winding and welding assembly is horizontally mounted on the frame and above the mounting component provided with the outer welding needle. One end of the winding rod is open and the other end is closed. The winding rod is in power connection with a motor three arranged on the frame. Guide holes and air holes are radially arranged on the outer cylindrical surface of the winding rod. A number of guide holes and air holes are arranged in an array along the circumferential direction of the winding rod.

[0012] Furthermore, the inner-roll welding assembly further includes a threaded shaft that is coaxial with the winding roller and has a hollow interior. One end of the threaded shaft extends into the winding roller 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 machine frame, and power connection is achieved between the threaded shaft and a second motor provided on the machine frame through a power connecting member. The driven member of the power connecting member is threadedly connected to the threaded shaft and is restricted to only rotate.

[0013] Furthermore, a sliding seat is sleeved in each guide hole. The side of the sliding seat facing away from the winding roller is arc-shaped. Initially, the arc surface of the sliding seat is coaxial and of the same diameter as the outer circular surface of the winding roller. A part of the sliding seat extends into the winding roller, and a third spring is provided between them. The elastic force of the third spring is used to drive the sliding seat to move closer to the axis of the winding roller. Initially, the third spring is compressed;

[0014] One side of the driving seat facing the sliding seat is provided with a third inclined surface, and the sliding seat is provided with a fourth inclined surface that fits the third inclined surface. When the threaded shaft moves closer to the closed end of the winding roller, through the cooperation of the third inclined surface and the fourth inclined surface, the sliding seat can be driven to move away from the axis of the winding roller.

[0015] Furthermore, an installation hole is provided through the end face of the sliding seat, an insulating sleeve is installed in the installation hole, and an inner welding needle is provided in the insulating sleeve. One end of the inner welding needle facing the axis of the winding roller is provided with an installation bracket;

[0016] An inner bracket is installed in the winding roller. The installation bracket and the inner bracket form a sliding fit, and the sliding direction of the installation bracket is parallel to the sliding direction of the sliding seat. A fifth spring is provided between the installation bracket and the inner bracket, and the elastic force of the fifth spring drives the installation bracket to move closer 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 limiting ring, and the other end is provided with an external step. The driving rod is slidably connected to an external driving bracket, and a fourth spring is provided between the driving bracket and the external step;

[0018] The driving bracket is provided with a fifth inclined surface, and the installation bracket is provided with a sixth inclined surface. The fifth inclined surface and the sixth inclined surface fit. When the threaded shaft moves away from the closed end of the winding roller, through the cooperation of the fifth inclined surface and the sixth inclined surface, the installation bracket can be driven to move away from the axis of the winding roller.

[0019] Furthermore, an end cover is provided at the open end of the winding roller. The end cover is provided with a through hole for avoiding the threaded shaft. The end cover is connected to the machine frame through a bearing. A connecting shaft in the form of a hollow shaft extends from the end face of the end cover, and the connecting shaft is in power connection with a third 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 is a structural schematic diagram of the present invention;

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

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

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

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

[0036] Figure 6 is a cross-sectional view of the external welding assembly;

[0037] Figure 7 is a structural schematic diagram when the internal welding assembly is wound;

[0038] Figure 8 is a structural schematic diagram when the internal welding assembly is spot-welded;

[0039] Figure 9 is an exploded view of the internal welding assembly;

[0040] Figure 10 is an internal schematic diagram of the internal welding assembly;

[0041] Figure 11 is a partial cross-sectional view of the internal welding assembly;

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

[0043] The reference numerals in the drawings are:

[0044] 100, Frame; 101, Tray; 102, Guide Wheel; 103, Guide Plate; 104, Push Sleeve; 105, Linear Module II; 200, Conveyor Mechanism; 201, Conveyor Support; 202, Spring I; 203, Closing Seat; 204, Linear Module I; 205, Synchronous Belt; 206, Transmission Shaft; 207, Motor I; 208, Tensioning Component; 300, Winding Mechanism; 301, Motor II; 302, Motor III; 303, Linear Module III; 304, Connecting Bracket; 305, Outer Welding Component; 3051, Outer Cover; 3052, Inner Slide Block; 3053, Spring II; 3054, Bottom Rod; 3055, Connecting Bridge; 3056, Side Bridge; 3057, Anvil; 3058, Outer Welding Needle; 3059, Cutting Knife; 306, Inner Welding Component; 307, Winding Rod; 3071, Guide Hole; 3072, Air Hole; 308, Slip Ring with Through Hole; 309, Threaded Shaft; 310, Connecting Pipe; 311, Driving Seat; 312, Slide Seat; 313, Spring III; 314, Inner Bracket; 315, Driving Rod; 316, Spring IV; 317, Mounting Bracket; 318, Spring V; 319, Inner Welding Needle; 320, Driving Bracket; 321, End Cap; 322, Threaded Sleeve. Detailed Embodiment

[0045] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features, and effects of the present invention as follows.

[0046] Refer to Figures 1-12 , a fully automatic winding device for nanocrystalline magnetic cores, including a frame 100, on which a tray 101, a conveyor mechanism 200, and a winding mechanism 300 are installed. A guide wheel 102 is installed on one side of the feeding end of the conveyor mechanism 200. A nanocrystalline strip is wound around the tray 101. During use, the free end of the nanocrystalline strip is passed around the guide wheel 102 and then inserted into the conveyor mechanism 200, clamped by the conveyor mechanism 200, and then the nanocrystalline strip is pulled by the conveyor mechanism 200 and moved into the winding mechanism 300. The winding mechanism 300 winds the nanocrystalline strip. While winding, the winding mechanism 300 also performs internal spot welding on the wound coil, so that different layers of the coil are fixed by spot welding. When the winding is completed, the winding mechanism 300 performs spot welding on the outer cut of the coil. Thus, the winding production of a nanocrystalline magnetic core is completed. Finally, the nanocrystalline magnetic core can be pushed off from the winding mechanism 300.

[0047] Conveyor Mechanism 200:

[0048] Refer to 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] Refer to Figures 5-12 , the winding mechanism 300 includes an external welding assembly 305 and an internal welding assembly 306. The latter is used to receive the nanocrystalline strip and wind it, and perform internal spot welding on the wound coil to fix the different layers of the coil by spot welding. The former is used to cut the nanocrystalline strip and perform spot welding at the cut after winding at the cut.

[0054] Refer to Figure 6 , the external welding assembly 305 includes a mounting component, and there are two groups of mounting components arranged along the conveying direction of the conveying mechanism 200.

[0055] The mounting component includes an outer housing 3051 slidably mounted on the frame 100 in the vertical direction. An inner slider 3052 is sleeved inside the outer housing 3051, and a second spring 3053 is arranged between them. Its elastic force is used to drive the inner slider 3052 to move downward. A bottom rod 3054 extends from the lower end surface of the inner slider 3052. An external welding needle 3058 is arranged on the upper end surface of the inner slider 3052 of one group of mounting components, and a cutter 3059 is arranged on the upper end surface of the inner slider 3052 of the other group of mounting components. An avoidance opening for avoiding the external welding needle 3058 or the cutter 3059 is arranged on the upper end surface of the outer housing 3051. In addition, initially, the upper height of the cutter 3059 is higher than the upper height of the external welding needle 3058. After the cutter 3059 cuts the nanocrystalline strip, the external welding needle 3058 is still inside the outer housing 3051. In addition, an anvil 3057 is installed on the frame 100 directly above the cutter 3059, and a cutting edge for avoiding the cutter 3059 is arranged on the anvil 3057.

[0056] A connecting bridge 3055 is arranged between the outer housings 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 housing 3051. A side bridge 3056 extends from the side of the mounting component provided with the cutter 3059, and the upper end surface of the side bridge 3056 is flush with the upper end surface of the outer housing 3051. The end of the side bridge 3056 is close to the discharge end of the conveying mechanism 200; during the process of the conveying mechanism 200 pulling the nanocrystalline strip to move, the nanocrystalline strip is supported by the side bridge 3056, the outer housing 3051, and the connecting bridge 3055, and finally lies on the outer housing 3051 of the mounting component provided with the external welding needle 3058.

[0057] Furthermore, refer to 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 Figures 7-11 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] On one side of the driving seat 311 facing the sliding seat 312, there is an inclined surface three, and on the sliding seat 312, there is an inclined surface four that fits with the inclined surface three. When the threaded shaft 309 moves closer to the closed end of the winding rod 307, through the cooperation of the inclined surface three and the inclined surface four, the sliding seat 312 can be driven to move away from the axis line of the winding rod 307.

[0062] An installation hole runs through the end face of the sliding seat 312. An insulating sleeve is installed in the installation hole, and an internal welding needle 319 is arranged in the insulating sleeve. One end of the internal welding needle 319 facing the axis line of the winding rod 307 is provided with an installation bracket 317.

[0063] An internal bracket 314 is installed inside the winding rod 307. A sliding fit is formed between the installation bracket 317 and the internal bracket 314, and the sliding direction of the installation bracket 317 is parallel to the sliding direction of the sliding seat 312. A spring five 318 is arranged between the installation bracket 317 and the internal bracket 314, and its elastic force drives the installation bracket 317 to move closer to the axis line of the winding rod 307.

[0064] The end of the threaded shaft 309 extending into the winding rod 307 is provided with an internal step. A driving rod 315 is sleeved inside the internal 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 driving rod 315 is slidably connected to an external driving bracket 320, and a spring four 316 is arranged between the driving bracket 320 and the external step.

[0065] An inclined surface five is arranged on the driving bracket 320, and an inclined surface six is arranged on the installation bracket 317. The inclined surface five and the inclined surface six fit with each other. When the threaded shaft 309 moves away from the closed end of the winding rod 307, through the cooperation of the inclined surface five and the inclined surface six, the installation bracket 317 can be driven to move away from the axis line of the winding rod 307.

[0066] Refer to Figure 12 , at the open end of the winding rod 307, there is an end cover 321. A through hole for avoiding the threaded shaft 309 is arranged 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 face of the end cover 321, and the connecting shaft is power-connected to the motor three 302.

[0067] A threaded sleeve 322 is installed inside the connecting shaft through a bearing. The threaded sleeve 322 is threadedly connected to the threaded shaft 309. The motor two 301 is power-connected to the threaded sleeve 322. In this way, through the connection pipe 310 to the negative pressure pump, the air inside the winding rod 307 can be sucked by the negative pressure pump, and a negative pressure is formed 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 nanocrystalline strip is conveyed by the conveying mechanism 200 for a preset distance, the winding pauses. The connecting bracket 304 is driven to move upward by the linear module three 303. During the upward movement, first, the connecting bracket 304 moves upward, driving the bottom rod 3054, the inner slider 3052, the second spring 3053, and the outer housing 3051 to move upward together. When the upward movement of the outer housing 3051 is restricted by the anvil 3057 or the winding roller 307 and cannot move upward, the continuous upward movement of the connecting bracket 304 will drive the cutting knife 3059 to continue moving upward to cut the nanocrystalline strip;

[0076] Step 5: The winding continues. After the remaining nanocrystalline strip is wound, the connecting bracket 304 moves upward again, and the external welding needle 3058 spot-welds the cut-off part of the wound material roll. After the spot-welding is completed, the connecting bracket 304 moves downward, and the external cutting and welding assembly 305 resets. At the same time, the push sleeve 104 is driven to move by the linear module two 105 to push the material roll off the winding roller 307;

[0077] Step 6: Repeat Steps 1-5.

[0078] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention still fall 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 a frame (100). A nanocrystalline strip is wound on the material tray (101). The conveying mechanism (200) is used to traction the nanocrystalline strip to move towards the winding mechanism (300). The winding mechanism (300) includes an external welding assembly (305) and an internal welding assembly (306). During use, the external welding assembly (305) receives the nanocrystalline strip and makes the end thereof contact with the outer cylindrical surface of the internal welding assembly (306). The internal welding assembly (306) sucks the nanocrystalline strip by means of negative pressure adsorption. Then, the internal welding assembly (306) rotates to achieve the winding action. While winding, spot welding is performed on the formed coil from the inside to fix different layers of the coil by spot welding. After winding is completed, the nanocrystalline strip is cut by the external welding assembly (305), and after winding is completed at the cutting position, spot welding is performed at the cutting position; The external welding assembly (305) includes a mounting component. There are two groups of mounting components 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) in the vertical direction. An inner slider (3052) is sleeved inside 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. A bottom rod (3054) extends from the lower end surface of the inner slider (3052). An external welding needle (3058) is arranged on the upper end surface of the inner slider (3052) of one group of mounting components, and a cutter (3059) is arranged on the upper end surface of the inner slider (3052) of the other group of mounting components. An avoidance opening for avoiding the external welding needle (3058) or the cutter (3059) is arranged on the upper end surface of the outer cover shell (3051). When the cutter (3059) completes cutting the nanocrystalline strip, the external welding needle (3058) is still inside the outer cover shell (3051). A cutting board (3057) is installed on the frame (100) directly above the cutter (3059), and a cutting edge for avoiding the cutter (3059) is arranged on the cutting board (3057); A connection bridge (3055) is arranged between the outer cover shells (3051) of the two groups of mounting components. A side bridge (3056) extends from the side surface 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). The upper end surfaces of the connection bridge (3055), the outer cover shell (3051), and the side bridge (3056) are flush; The inner involute welding assembly (306) is horizontally installed on the frame (100) and is located above the mounting component provided with the outer welding needle (3058). One end of the winding rod (307) is open and the other end is closed. The winding rod (307) is in power connection with the third motor (302) arranged on the frame (100). The outer circumferential surface of the winding rod (307) is radially provided with guide holes (3071) and air holes (3072), and a plurality of guide holes (3071) and air holes (3072) are arranged in an array along the circumferential direction of the winding rod (307). The inner involute welding assembly (306) further includes a threaded shaft (309) 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 in sliding connection with the frame (100), and the threaded shaft (309) is in power connection with the second motor (301) arranged on the frame (100) through a power connecting member. The driven member of the power connecting member is in threaded connection with the threaded shaft (309) and the driven member is restricted to only rotate. A sliding seat (312) is sleeved in each guide hole (3071). The side surface of the sliding seat (312) facing away from the winding rod (307) is arc-shaped. Initially, the arc surface of the sliding seat (312) is coaxial and equal in diameter with the outer circumferential surface of the winding rod (307). A part of the sliding seat (312) extends into the winding rod (307) and a third spring (313) is arranged between the two. The elastic force of the third spring (313) is used to drive the sliding seat (312) to move closer to the axis of the winding rod (307). Initially, the third spring (313) is compressed. One side of the driving seat (311) facing the sliding seat (312) is provided with a third inclined surface, and the sliding seat (312) is provided with a fourth inclined surface that fits with the third inclined surface. When the threaded shaft (309) moves closer to the closed end of the winding rod (307), through the cooperation of the third inclined surface and the fourth inclined surface, the sliding seat (312) can be driven to move away from the axis of the winding rod (307).

2. The fully automatic winding device for nanocrystalline magnetic cores according to claim 1, characterized in that, A connecting bracket (304) is connected between the bottom rods (3054) of the two mounting components. The connecting bracket (304) is driven by a third linear module (303) arranged on the frame (100) to move in the vertical direction.

3. The fully automatic winding device for nanocrystalline magnetic cores according to claim 1, characterized in that An installation hole is penetrated through the end surface of the sliding seat (312). An insulating sleeve is installed in the installation hole, and an inner welding needle (319) is arranged in the insulating sleeve. One end of the inner welding needle (319) facing the axis of the winding rod (307) is provided with an installation bracket (317). An inner bracket (314) is installed in the winding rod (307). The installation bracket (317) and the inner bracket (314) form a sliding fit, and the sliding direction of the installation bracket (317) is parallel to the sliding direction of the sliding seat (312). A fifth spring (318) is arranged between the installation bracket (317) and the inner bracket (314). The elastic force of the fifth spring (318) drives the installation bracket (317) to move closer to the axis of the winding rod (307). The end of the threaded shaft (309) extending into the winding rod (307) is provided with an internal step. A driving rod (315) is sleeved inside the internal 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. A driving bracket (320) is slidably connected to the outside of the driving rod (315). A fourth spring (316) is arranged between the driving bracket (320) and the external step; The driving bracket (320) is provided with a fifth inclined surface, and the mounting bracket (317) is provided with a sixth inclined surface. The fifth inclined surface is in contact with the sixth inclined surface. When the threaded shaft (309) moves away from the closed end of the winding rod (307), through the cooperation of the fifth inclined surface and the sixth inclined surface, the mounting bracket (317) can be driven to move away from the axis of the winding rod (307).

4. A fully automatic winding device for nanocrystalline magnetic cores according to claim 1 or 3, characterized in that, A end cover (321) is arranged at the open end of the winding rod (307). 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). The connecting shaft is in power connection with the third motor (302); A threaded sleeve (322) is installed in the connecting shaft through a bearing. The threaded sleeve (322) is in threaded connection with the threaded shaft (309). The second motor (301) is in power connection with the threaded sleeve (322). The end of the connecting pipe (310) is connected to a negative pressure pump.

5. The fully automatic winding device for a nanocrystalline magnetic core according to claim 3, characterized in that, A push sleeve (104) is sleeved outside the winding rod (307). A second linear module (105) for driving the push sleeve (104) to move is installed on the frame (100).

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