198 results about "Inductor windings" patented technology

The invention discloses a plug-in inductor winding process control method based on production parameter dynamic compensation, and provides a closed-loop compensation control strategy taking a physical field evolution model as a core aiming at the problems of unstable sensing quantity and non-uniform structure in the traditional process. The method comprises the following steps: firstly, constructing an ideal physical field reference model according to target inductance parameters and a structure, and describing an evolution law of characteristics such as a magnetic field, an electric field or impedance in an ideal state; in the actual winding process, a physical field signal is collected through a sensor, production parameters such as wire tension and main shaft rotating speed are obtained, and a physical field distribution snapshot of the current winding state is generated. And the system compares the extracted actual features with the reference model, identifies a dominant disturbance source causing deviation in combination with real-time production parameters, and outputs a disturbance type label carrying causal information. And according to a label and a production parameter change trend, a compensation instruction is dynamically generated and executed, fine adjustment of tension, a winding displacement track or density is realized, and consistency and precision of an inductor finished product are ensured.

The invention relates to the technical field of electrical performance testing, in particular to a method and system for measuring loss of an inductance winding, and the method comprises the following steps: applying a direct current to a measured inductance winding, synchronously monitoring the temperature, and multiplying a pre-measured direct current resistance value by a direct current value to obtain a direct current loss power value. The direct current is applied to the inductance winding, the temperature is monitored synchronously, the direct-current loss power is obtained by combining the direct-current resistance value and the current value, the temperature curve in the initial stage is extracted, the temperature rise rate is calculated, and therefore the winding heat capacity parameter is obtained, loss measurement can be closely associated with thermal response, and the measurement accuracy is improved. Introduction of a heat capacity factor is added in loss calculation, dynamic characteristics of a winding material on a thermodynamic level can be reflected, instantaneous current with load step change is applied after an inductor is cooled, an instantaneous loss power curve is generated by collecting a voltage sequence and a current sequence at the same time, and loss calculation is not limited to average value or steady state measurement any more.

Provided in the present invention is a magnetic element integrated with a coupled inductor and a transformer. The magnetic element comprises an upper magnetic core and a lower magnetic core, which are arranged in a fitted manner, wherein the lower magnetic core comprises a magnetic cover, M coupled inductor magnetic columns, N transformer magnetic columns and Q side columns, M, N and Q all being integers greater than or equal to 1; the coupled inductor magnetic columns are used for the winding of coupled inductor windings; the transformer magnetic columns are used for the winding of transformer primary windings and transformer secondary windings; the M coupled inductor magnetic columns and the N transformer magnetic columns are arranged in parallel on the magnetic cover; and the Q side columns are arranged on the magnetic cover. By means of the present invention, a magnetic element integrated with a coupled inductor and a transformer is used, so that the volume and weight of the magnetic element can be reduced, the efficiency and power density of a converter can be improved, and the costs of the converter can be reduced.

The invention relates to the technical field of fault diagnosis, in particular to an inductance winding equipment fault detection method and system based on multi-sensor fusion, and the method comprises the following steps: injecting a high-frequency sinusoidal voltage signal into a servo motor stator winding of inductance winding equipment, and synchronously collecting a motor end voltage, a three-phase current and a rotor position encoder signal; and constructing an original multi-dimensional signal matrix. According to the invention, the high-frequency sinusoidal voltage signal is actively injected into the stator winding of the servo motor of the inductance winding equipment, and the motor end voltage, the three-phase current and the rotor position encoder signal are synchronously acquired, so that the active excitation response capture of the operation state is realized, and compared with a passive monitoring mode, the signal controllability and the response accuracy are better; in an original multi-dimensional signal matrix, sequence calibration is carried out through a unified timestamp standard, time alignment is carried out on electrical signals and motion signals, and the collaboration and effective association of multi-source data are enhanced.

The invention discloses a surrounding type winding device of an annular inductor, and relates to the field of annular inductor winding, the surrounding type winding device comprises a winding workbench, a rotating tool mechanism and an annular winding mechanism are arranged on the winding workbench, a positioning round hole is formed in the winding workbench, and the rotating tool mechanism comprises a horizontal sliding plate, a rotating shaft and a rubber roller; a plurality of horizontal sliding plates are uniformly distributed on the winding workbench around the positioning round hole, the rotating shafts are rotatably mounted on the horizontal sliding plates, and the rubber rollers are fixedly mounted on the rotating shafts in a sleeving manner; the annular winding mechanism comprises an upper semi-circular ring, a lower semi-circular ring and a wire disc, the upper semi-circular ring and the lower semi-circular ring have the freedom degree of moving in the axial direction of the positioning circular hole, the upper semi-circular ring and the lower semi-circular ring make contact to form a winding ring, the axis of the winding ring is perpendicular to the axis of the positioning circular hole, and the wire disc is installed on the inner ring of the winding ring; the end, making contact with the lower semicircular ring, of the upper semicircular ring is located among the multiple rubber rollers, winding operation of the annular magnetic core can be automatically completed, and the winding efficiency is high.

The invention discloses an electronic transformer winding positioning tool which comprises a connecting base, a connecting plate connected with a positioning plate is arranged at the top of the connecting base, a pair of correction shafts are movably arranged on the connecting plate, a positioning frame and a butt joint clamping block are arranged at the top of the connecting plate, a set of positioning shafts are movably arranged on the positioning frame, and the positioning shafts and the correction shafts are matched for clamping a transformer coil. A rotating ring is rotationally arranged on the surface of the correcting shaft, a corresponding magnetic ring is arranged at the bottom of the rotating ring, a driving frame is movably arranged on the butt joint clamping block, and a guide frame is arranged on the side, close to the correcting shaft, of the driving frame; compared with the prior art, through the linkage design of the correction shaft and the magnetic ring, the magnetic ring at the bottom of the rotating ring is controlled by the driving frame to do lifting motion, and in cooperation with a spring reset mechanism of the reset sliding plate, flexible clamping of a coil can be achieved, and the levelness of the coil can be dynamically adjusted through the synchronous action of the supporting ring and the rotating ring in the clamping process; and the influence on the yield of equipment due to deviation in the winding process is prevented.

The invention discloses a state judgment method for a zero-sequence mutual inductor, and the method comprises the following steps: obtaining real-time operation parameters of the zero-sequence mutual inductor according to a preset period or an external instruction, the operation parameters at least comprising a zero-sequence current, a zero-sequence voltage, an environment temperature and an impedance parameter of a mutual inductor winding; preprocessing the operation parameters, and comparing a preprocessing result with pre-stored reference parameters to generate a deviation feature vector; inputting the deviation feature vector into a pre-trained state judgment model, and outputting a state judgment result of the zero sequence transformer, the state judgment result including a normal state, an early warning state and a fault state; and executing corresponding control operation according to the state judgment result.

A structure includes a first layer having inductor windings. An inner area of the first layer is at least partially enclosed by the inductor windings and an outer area of the first layer is separated from the inner area by the inductor windings. This structure further includes a second layer having structural fill elements. The first layer and the second layer are parallel, and the second layer is relatively below the first layer in a direction perpendicular to the first layer. The density of the structural fill elements aligned below the inner area is less than the density of the structural fill elements aligned below the outer area.

The invention discloses a method, a device and equipment for determining the inductance of a filter inductor and a medium, and relates to the technical field of inverters. By establishing a target state equation, the dynamic change of the output voltage under different bridge arms of the inverter system and the current of the filter inductor can be known subsequently. And according to the target state equation, determining a branch current of a coupling inductance winding of each bridge arm and a target current corresponding to filtering, so that the branch current and the target current are abstracted into a mathematical expression in a circuit operation process, and the branch current and the target current are deduced and determined through a mathematical mode. And determining the ripple current variation of the filter inductor by taking the determined branch current and the target current as subsequent constraint parameters. Furthermore, the inductance value of the filter inductor is determined based on the ripple current variable quantity of the filter inductor, and is used as an important basis for selecting the filter inductor, so that the specific inductance value is determined on the basis of reducing the inductance value of the filter inductor, and the selection accuracy is improved.

The utility model discloses a full-automatic inductor winding device, which belongs to the technical field of inductor winding equipment and comprises a seat frame, a pay-off structure, a sliding wire structure, a wire driving mechanism, a winding jig, a speed reducing mechanism, a winding power mechanism and a control part, the paying-off structure is movably arranged at one end of the upper portion of the seat frame, and the wire driving mechanism is in driving connection with the sliding wire guiding structure; the pay-off structure is arranged at one end of the seat frame, the winding jig is movably arranged above the other end of the seat frame relative to the pay-off structure, the speed reducing mechanism is in power connection with the winding jig, the winding power mechanism is arranged on the seat frame, and the winding power mechanism is in driving connection with the speed reducing mechanism; the control part is arranged on the side face of the seat frame and is in driving connection with the wire driving mechanism and the winding power mechanism. According to the utility model, the technical problem of how to improve the winding efficiency of the inductor winding machine is solved.

The invention relates to the technical field of winding type inductor manufacturing equipment, in particular to inductor automatic winding equipment which comprises a winding mechanism and a feeding mechanism. A winding mold is installed at the output end of the feeding mechanism, a plurality of rotatable winding rollers are installed on one side of the winding mold, a back plate is arranged at one end of each winding roller, a plurality of sets of wire clamping grooves are formed in the outer edge of the circumferential wall of each back plate, and a slot is formed in the other end of each winding roller. The winding mechanism comprises an ejector rod and a base, a fourth motor is installed on one side of the base, a first supporting seat is installed on the upper end face of the base, a hollow rotating shaft and a second rotating shaft which are horizontally arranged side by side are installed on the first supporting seat, a second air cylinder is fixed to one side of the first supporting seat, and a push plate is fixed to the output end of the second air cylinder; one end of the ejector rod is fixedly connected with the push plate, and the other end of the ejector rod is fixedly provided with a connecting column. Through parallel operation of multiple mechanisms, the problems that loading and unloading of traditional winding equipment are tedious, and the starting end of a coil cannot be rigidly fixed are solved.

The utility model relates to the technical field of inductor winding machines, in particular to a multi-station inductor winding machine. Comprising a workbench, at least two clamping devices, a wire feeding device, a wire hooking device and a wire pulling device, the wire hooking device comprises a first movable frame, first hooking needles and a wire hooking execution mechanism, the first hooking needles are installed on the first movable frame and used for hooking the wire, the wire hooking execution mechanism is used for driving the first movable frame to move up and down, the number of the first hooking needles is equal to that of the clamping devices, and one first hooking needle can enter one clamping device to pull the wire downwards from the position above the inductor; the wire pulling device comprises a second movable frame, wire clamping mechanisms installed on the second movable frame and used for clamping the wires and a wire pulling executing mechanism used for driving the second movable frame to move, the number of the wire clamping mechanisms is equal to that of the clamping devices, and one wire clamping mechanism can enter one clamping device to pull the wires upwards from the lower portion of the inductor.

This application discloses an inductor structure and its fabrication method, equipment, and dielectric. The inductor structure includes an inductor winding, a magnet, and a metal frame. The magnet encloses the inductor winding to form a cuboid inductor body. The metal frame covers the top and / or bottom of the cuboid inductor body and connects to the inductor winding terminals that are extended and bent to the top and / or bottom of the cuboid inductor body. By adding a metal frame to the inductor surface, an inductor structure with electrical interconnect design is achieved, which is compatible with mature molding inductor manufacturing methods and semiconductor processes. Advanced system-in-package (SIIP) requires higher dimensional accuracy than general inductor manufacturing capabilities, limiting the flexibility of package design. The electrode reconfiguration method provided by this invention can solve this accuracy mismatch and improve design flexibility.

The present invention discloses an integrated inductor and integrated circuit, wherein the integrated inductor includes a magnetic core and windings, the magnetic core including a core center leg, a first side leg, a second side leg, an upper magnetic core base plate, and a lower magnetic core base plate; the windings include a first inductor winding wound on the first side leg, and a second inductor winding wound on the second side leg; the direction of the magnetic flux generated by the first inductor winding is opposite to the direction of the magnetic flux generated by the second inductor winding; the magnetic flux density generated by the first inductor winding is different from the magnetic flux density generated by the second inductor winding; and air gaps are provided on both the first side leg and the second side leg, with the air gaps of the first side leg and the second side leg being different. The present invention achieves flexible adjustment based on the actual proportion of copper loss and iron loss, thereby reducing the volume of the magnetic core, reducing magnetic core loss, and improving circuit efficiency. At the same time, the present invention also adopts differentiated design based on heat dissipation and efficiency considerations, and compromises magnetic loss and copper loss, so that the magnetic element coil and magnetic core can be maximized.

The invention discloses an integrated transformer, a circuit board and electronic equipment, and relates to the technical field of transformers. A first part of a first wire is wound on a coil layer formed by a first winding section, and a first part of a second wire is wound on a coil layer formed by a third winding section to respectively form two primary winding coils of the transformer; a coil layer formed by winding the third wire and a coil layer formed by winding the fourth wire respectively form two secondary winding coils of the transformer; and the second part of the first wire is wound on the coil layer formed by the second winding section, and the second part of the second wire is wound on the coil layer formed by the fourth winding section, so that a resonant inductor winding coil is formed. Thus, the transformer and the resonant inductor are integrated, the occupied space is small, and miniaturization of electronic equipment is facilitated.

An integrated magnetic component comprises a transformer, a resonant inductor, a current comparator, and a second insulator. The transformer includes a transformer magnetic core and a transformer winding disposed on the transformer magnetic core. The resonant inductor includes an inductor magnetic core contacting the transformer magnetic core, and an inductor winding disposed on the inductor magnetic core. The resonant inductor shares a magnetic circuit with the transformer. The current comparator includes a current comparator magnetic core, a current comparator winding disposed on the current comparator magnetic core, and a first insulator disposed around the current comparator magnetic core. The current comparator, the resonant inductor and the transformer are arranged to form an integrated structure. The second insulator is disposed around the integrated structure.

An apparatus (1) for carrying out inductive windings (C) wound on salient poles (P) of electrical machines comprising at least one supporting group (2) for temporarily accommodating the ferromagnetic core (R) of the electrical machine in a configuration in which at least one of its radial salient poles (P) faces and is proximate to at least one assembly (3) which rotates with respect to an axis (X) which is parallel to the radial direction of a respective salient pole (P), assembly (3) provided with at least one dispenser (4) of at least one conductor (W), and at least one structure (5, 6) for guiding and conveying the conductor (W), at least partially insertable into at least one of the slots (S) for encircling a respective salient pole (P).

The utility model discloses a ring type inductance winding device belongs to ring inductor production technical field. The device includes the base, is equipped with the supporting plate on the base, is equipped with the clamping mechanism for clamping ring inductance on the supporting plate, the clamping mechanism includes the drive seat, the abutment wheel, two positioning seat and two positioning wheel, and the positioning seat is slid in the slide rail of supporting plate, and the drive seat is slid in the sliding slot of supporting plate, and the drive seat is installed with the rotation motor of driving abutment wheel rotation, the supporting plate is equipped with the adjusting assembly of adjusting positioning seat position and the abutment assembly of driving drive seat movement, the open type winding ring is rotatably equipped on the base, and the winding ring is hinged with the closed circular block, and the closed circular block is equipped with the fixed assembly, and the base is equipped with the drive wheel and drive motor of driving winding ring rotation. The device can adapt to the winding of ring inductance of different diameters, and the coil is convenient to replace, and the winding is stable and efficient.

The invention relates to the technical field of winding loss measurement, and discloses an inductor winding loss measurement method and system, and the method comprises the steps: carrying out the partitioning processing of an inductor winding, obtaining a partitioned winding, and setting an initial filling factor of the partitioned winding; after excitation current is input into the inductance winding, factor related parameters of the partition winding are measured through a factor detection tool, and winding related parameters of the partition winding are measured through a winding detection tool; based on the factor related parameters, analyzing a single deformation area of a single wire in the inductance winding, performing wire accumulation processing on the single deformation area, and converting an initial filling factor into a dynamic filling factor through a single area deformation area; and analyzing the initial eddy-current loss of the partitioned winding, performing loss dynamic adjustment on the initial eddy-current loss by using the dynamic fill factor to obtain dynamic eddy-current loss, and determining the final eddy-current loss of the inductance winding through the dynamic eddy-current loss. According to the invention, both measurement accuracy and measurement convenience can be considered.

The application discloses a common-mode inductor, a common-mode inductor winding method and an adapter, comprising: a ring-shaped magnetic core and N windings wound on the ring-shaped magnetic core, N being an integer greater than 2; the N windings are rotationally symmetrical along the center direction of the ring-shaped magnetic core, each winding in the N windings comprises two lead terminals, and the two lead terminals are located at the outermost layers on both sides of each winding; wherein each winding in the N windings comprises a first group of windings and a second group of windings, the starting winding point of each winding in the N windings is located between the first group of windings and the second group of windings, and the number of winding sections in the first group of windings is different from the number of winding sections in the second group of windings; each winding section in the first group of windings and the second group of windings comprises multiple layers, and each layer comprises multiple turns. The common-mode inductor provided by the application can make the common-mode inductor structure have a large enough common-mode impedance without increasing the volume, thereby solving the problem of too small impedance in a high frequency band.

A power converter includes a first circuit, a second circuit, a first set of capacitors, a second set of capacitors, and a first inductance unit. The first circuit includes a first driver on a first substrate and a first switch pair forming a first switch node. The second circuit includes a second driver on the first substrate and a second switch pair forming a second switch node. The first group of capacitors is located at the bottom of the first substrate, and the second group of capacitors is located at the top of the second substrate opposite to the bottom of the first substrate. The first inductance unit includes a plurality of connection channels connecting nodes on the first substrate to corresponding nodes on the second substrate, a first inductance winding connected to the first switching node, a second inductance winding connected to the second switching node, and a first magnetic core.

An inductor device comprises an inductor core; and one or more inductor windings wound around the inductor core. The inductor core is formed to at least partially embed a part of the one or more inductor windings. A cross section of the inductor core comprises a four-sided winding window in which at least partially embedded part of the one or more inductor windings is arranged within the inductor core. The inductor core comprises air gaps extending from the four sides of the winding window. The winding window comprises at each side of the winding window a respective winding clearance in which no inductor windings are arranged. At least one of the four winding clearances has a non-uniform shape.

The invention discloses induction transformer winding positioning equipment convenient for coil winding, and relates to the technical field of induction transformer winding positioning, the induction transformer winding positioning equipment comprises a main body frame and a threaded rod, the main body frame is internally provided with a built-in groove, the built-in groove is internally provided with a hydraulic rod, and the output end of the hydraulic rod is provided with a connecting seat; and a positioning frame is mounted at the bottom of the connecting seat. According to the induction transformer winding positioning equipment convenient for coil winding, the throttle valve is mounted in the hydraulic rod, and the pressure compensation device is additionally arranged on the basis of the throttle valve, so that the influence of load change on flow can be automatically counteracted, stable flow output is realized, the speed of the hydraulic rod can be kept constant even if the load fluctuates, and the working efficiency is improved. The stretching-out condition of the hydraulic rod can be controlled by controlling the throttling valve, the coil winding speed is matched with the stretching-out condition of the hydraulic rod, and therefore when the coil is wound, the hydraulic rod can be matched to drive the positioning frame to move, and uniform coil winding is facilitated.

The invention discloses an inductance coil winding and dispensing all-in-one machine, and belongs to the technical field of inductance production equipment.The machine comprises a workbench, and the workbench is provided with an intermittent rotating disc for winding and an intermittent rotating disc for dispensing; a magnetic core feeding device, a coil winding and cutting device, a coil two-wire-end folding and positioning device, a winding two-end excess length cutting device, a wire end welding device, a coil detecting device and a coil transferring device are sequentially arranged on the periphery of the intermittent rotating disc for winding. And a first dispensing device, a coil turnover device, a second dispensing device, a glue scraping device, a dispensing detection device and an inductance coil moving device are sequentially arranged on the periphery of the intermittent turntable for dispensing. Coil winding and coil surface dispensing packaging are integrated on one workbench, and the curing bin is arranged on one side of the workbench, so that assembly line type operation of inductor production is achieved, a complete inductor device can be manufactured through one machine, the working efficiency is high, the structural layout is compact, and the occupied space is small.

The invention belongs to the technical field of inductor production, and discloses a self-adaptive adjustment inductor winding machine. Comprising a winding machine main body which is installed on a bottom plate, and further comprises three positioning columns which are used for supporting and positioning an inductor to be wound. By arranging the driving assembly, the driving assembly enables the three positioning columns to clamp the inductor in the radial direction, the monitoring assembly converts clamping displacement into multiple signals in real time through the mechanical transmission and sensing technology, a moving plate drives a first rack to move along with displacement of an L-shaped column, and through variable-speed transmission of a first gear and a second gear, the clamping displacement is adjusted to be stable. Small displacement is converted into large displacement to drive the second rack to move, a laser sensor obtains a high-precision displacement signal by detecting the position of a connecting plate so as to judge whether the inductor is clamped in place or not, meanwhile, a pressure sensor at the tail end of the second rack senses clamping force through a spring buffer structure, and the inductor is prevented from being damaged by too large pressure; and the full-period accurate monitoring of the inductor positioning and winding process is realized.

The utility model discloses an auxiliary tool for welding heat treatment of a circumferential weld of a large pressure vessel barrel, which comprises support frames arranged on two sides at intervals, and a variable-diameter annular inductor winding mechanism is assembled and connected between the support frames; the mechanism comprises a plurality of bracket units, each bracket unit comprises arc-shaped brackets arranged on the two sides at intervals, each arc-shaped bracket comprises a center arc frame located in the center, and a plurality of side edge arc frames are hinged to the two ends of each center arc frame respectively; the arc-shaped brackets are fixedly connected through a plurality of connecting columns; protruding parts arranged in a protruding mode are integrally formed at the bottom of the center arc frame. The tool further comprises a frame fixedly connected between the protruding parts. The side arc frame is installed on the frame through a radian adjusting mechanism. The radian of the bracket unit can be adjusted through the radian adjusting mechanism. According to the device, the auxiliary tool is adjusted in an edge diameter adjusting mode according to barrels with different calibers, and then the machining requirement is met.

The invention relates to a soldering-tin-free inductor winding, measuring and packaging all-in-one machine, and belongs to the technical field of inductor winding. The soldering-tin-free inductor winding, measuring and packaging all-in-one machine comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a spot welding machine and a packaging measuring machine, and the spot welding machine and the packaging measuring machine are installed at the upper end, close to the end, of the bottom plate; the winding mechanism is mounted between the spot welding machine and the package measuring machine, and the surface of the winding mechanism extends to the inner side of the package measuring machine; when a wire is wound on an inductance framework, the device rotates along with a rotating shaft through a sleeving frame, and a sliding block in the sleeving frame is matched with a guide groove and a driving motor through a sliding head, so that the sliding block stably slides on the inner wall of the sleeving frame; at the moment, the first air bag can abut against the supporting strips to form relatively good expansion support for the voltage framework, so that the voltage framework is stably supported, the situation that wires are wound unevenly is reduced, and the finished product effect of inductor winding is guaranteed.

The invention discloses an inductor winding forming die which comprises a base, a containing groove capable of containing an inductor magnetic core is formed in the base, a plurality of wire inlet grooves are formed in the base, arc-shaped grooves bent towards the containing groove are formed in the tail ends of the wire inlet grooves, two wire pressing plates are further connected to the base and symmetrically arranged, and the two wire pressing plates are arranged in the arc-shaped grooves. The base is further provided with a plurality of first movable grooves, movable pieces capable of moving in the first movable grooves are arranged in the first movable grooves, the movable pieces are further provided with clamping grooves matched with the arc-shaped grooves, and the inner side face parts of the clamping grooves are higher than the wire inlet grooves. The movable part is clamped to the outer side of the arc-shaped groove through the clamping groove so that the inner side face of the clamping groove can be aligned with the arc-shaped groove, when the movable part moves to the initial position from the preset position, the inner side face of the movable part is separated from the groove wall of the first movable groove, and an operation assembly is further arranged on the base. According to the inductor winding forming die, wire feeding is stable.

The application relates to the technical field of mutual inductor winding production, and discloses a mutual inductor winding production processing equipment and a processing method thereof, which comprises a winding device, a rectangular core is arranged above the winding device, a plurality of air pipes are fixedly arranged at the output end of an air pump, a supporting seat is slidably connected to the upper side of the winding device, double-head air cylinders are slidably connected to the inner bottom wall of the supporting seat, supporting rods are fixedly arranged at the output end upper end of the double-head air cylinders, a plurality of sliding cylinders I are fixed to the outer wall of the supporting rods, sliding rods I are slidably arranged at the other ends of the sliding cylinders I, and a motor II is fixed to the inner bottom wall of the winding device. The controller, the air pump and the double-head air cylinders are matched, the gas pushes the plurality of sliding rods I to move and abut against the inner side of the fillet of the rectangular core, so that the problem that the existing technology cannot adapt to the cores with different fillet radii, the equipment has a single application scene and has poor universality is solved.