Forming device for T-core and U-core production

Abstract

The invention relates to a forming device for T-core and U-core production, which comprises a forming machine box and a forming device main body, the forming device main body comprises a production forming die movably mounted in the forming machine box, and the top and the bottom of the production forming die are respectively provided with an upper driving unit and a lower driving unit; a magnetic die changing system is arranged between the production forming die and the upper driving unit and between the production forming die and the lower driving unit, through the design of the magnetic die changing system, the T-core die and the U-core die can be switched through the whole device, forming, resource integration and optimal configuration of the T-core die and the U-core die can be achieved on one machine, the number of devices of an inductor production line is reduced, and the production efficiency is improved. By combining the processing technology, the utilization rate of forming equipment for producing inductors is increased, coordinated management between inductor production equipment is reduced, the equipment cost and maintenance cost of an inductor production line are reduced, the performance of the whole device is improved, functions are integrated, efficiency is optimized, and the occupied area is saved.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor production, and in particular to a molding device for producing T-core and U-core. Background Art

[0002] The emergence of one-piece molded inductors is attributed to the development of computer motherboard technology and power supply technology. The CPU main frequency is getting higher and higher, so there are high requirements for stable power supply and filtering. One-piece molded inductors solve this problem. They can work for a long time under high current conditions and can provide stable power supply for the CPU. Of course, the most important function of the inductor is filtering. In this respect, the one-piece molded inductor is not inferior. Good material properties and special design make the inductor structure more stable and the impedance lower, so it has higher efficiency.

[0003] At present, the T-Core process has great advantages in making ultra-thin and small-sized integrated inductors. The traditional design method is to wind the coil first and then press the magnetic core. The advantage of T-Core is to cold-press the magnetic core first and then wind the coil, which not only shortens the production process and saves costs, but also has better performance. It uses ultra-high magnetic permeability magnetic powder with independent formula, deeply integrates magnetic powder optimization with wire design, and realizes thin design while providing high-performance products as much as possible, and has the characteristics of low impedance and low loss. Low impedance and low loss inductors meet the strict requirements of electronic equipment for inductors, but the production of this kind of inductor requires the combination of T-Core process and U-core process. In order to meet the production of this kind of integrated inductor, T-Core process equipment and U-core process equipment are set up in the inductor production line respectively, but it also makes the equipment cost and maintenance cost of the entire integrated inductor production line high, the management between the inductor production equipment is heavy, and the land area is large. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a molding device for T-core and U-core production. The design of the magnetic mold changing system allows the overall device to switch between T-core molds and U-core molds, so that T-core molds and U-core molds can be molded on one machine, resource integration and optimal configuration can be achieved, the number of equipment in the inductor production line can be reduced, and the utilization rate of the molding equipment for producing inductors can be increased by merging the processing technology, the coordination management between the inductor production equipment can be reduced, and the equipment cost and maintenance cost of the inductor production line can be reduced, so that the performance of the overall device is improved, the function integration and efficiency are excellent. It is not only economical but also saves land area, making full use of the production workshop. The magnetic mold changing method is used to switch the T-core mold and U-core mold. The junction box is electrically connected to the control circuit, and the power is turned on and off under the action of the control circuit. When the power is on, several groups of equidistantly distributed magnetic modules with detection coils generate magnetic force. At this time, the magnetic force is used to make the magnetic template magnetically connected to the adjacent mold base to achieve rapid assembly. When the power is off, several groups of equidistantly distributed magnetic modules with detection coils are demagnetized. At this time, the magnetic template is disconnected from the adjacent mold base to achieve rapid disassembly, which is more convenient, faster and more convenient than the traditional mold disassembly and assembly method.

[0005] The present invention provides the following technical solution: a molding device for T-core and U-core production, comprising: a molding chassis and a molding device body, the molding device body comprising a production molding die movably installed inside the molding chassis, an upper driving unit and a lower driving unit are respectively arranged at the top and bottom of the production molding die, a magnetic mold changing system is arranged between the production molding die and the upper driving unit and the lower driving unit, and an automatic powder feeding module is movably installed at the rear side of the production molding die;

[0006] The production molding mold adopts any one of T-core mold and U-core mold;

[0007] The upper driving unit is used to drive the upper mold of the production molding mold to move;

[0008] The lower driving unit is used to drive the lower mold of the production molding mold to move;

[0009] The magnetic die changing system is used to change the production molds magnetically.

[0010] As a preferred solution of the present invention, the production molding mold includes a middle mold fixing plate, and the top and bottom of the middle mold fixing plate are respectively and parallelly provided with an upper mold base and a lower mold base, the upper mold base and the lower mold base are connected through four groups of limiting guide columns, and the four groups of limiting guide columns are respectively located near the four corners, and the upper and lower ends of the four groups of limiting guide columns are fixedly installed with anti-slip end seats, the four groups of limiting guide columns are fixedly connected to the middle mold fixing plate, and the four groups of limiting guide columns are slidably connected to the upper mold base and the lower mold base.

[0011] As a preferred solution of the present invention, the upper die base and the lower die base are respectively fixedly installed with corresponding upper punches and lower punches on one side close to the middle die fixing plate through the punch mounting plate, and the middle die is fixedly installed on the middle die fixing plate between the upper punches and the lower punches.

[0012] As a preferred solution of the present invention, the upper drive unit and the lower drive unit are arranged symmetrically in the upper and lower directions. The upper drive unit and the lower drive unit both include a drive solid platform fixedly installed inside the molding machine chassis. A reducer is fixedly installed on the side of the drive solid platform away from the production molding mold through fixing bolts, a servo motor is fixedly installed on one side of the reducer, and a drive connecting seat is movably installed on the side of the drive solid platform close to the production molding mold through a transmission screw.

[0013] As a preferred solution of the present invention, the input shaft on the reducer and the output shaft on the servo motor are fixedly connected via a coupling, and the output shaft on the reducer and the end of the transmission screw away from the drive connecting seat are fixedly connected via a coupling.

[0014] As a preferred solution of the present invention, the magnetic mold changing system is composed of an upper magnetic mold changing assembly and a lower magnetic mold changing assembly which are symmetrically distributed on the upper and lower sides of the production molding mold. The upper magnetic mold changing assembly and the lower magnetic mold changing assembly both include a parallel magnetic mold plate and an installation magnetic mold seat, and the magnetic mold plate is located between the production molding mold and the installation magnetic mold seat, and the installation magnetic mold seat and the driving connecting seat are fixedly connected near one end of the production molding mold.

[0015] As a preferred solution of the present invention, several groups of equidistantly distributed magnetic modules with detection coils are embedded and installed inside the magnetic template, and both sides of the several groups of equidistantly distributed magnetic modules with detection coils are electrically connected to junction boxes. Mounting seats are fixedly installed at the centers of the four sides of the magnetic template, and mounting holes are penetrated by the mounting seats near both ends, and first guide hole grooves are penetrated by the four corners of the magnetic template.

[0016] As a preferred solution of the present invention, any one of several groups of equally distributed magnetic modules with detection coils is provided with magnetic grooves on all sides close to the production and molding mold, and any one of several groups of equally distributed magnetic modules with detection coils is fixedly installed with electromagnetic coils and magnetic flux detection coils inside.

[0017] As a preferred solution of the present invention, an installation groove is opened on one side of the magnetic mold base near the magnetic template, and the installation groove and the installation hole correspond to each other. Second guide hole grooves are opened through the four corners of the installation magnetic mold base, and the second guide hole grooves correspond to the first guide hole grooves.

[0018] As a preferred solution of the present invention, a mold changing window is provided on the front side of the molding machine box near the magnetic mold changing system.

[0019] The beneficial effects of the present invention are:

[0020] 1. In the present invention, the design of the magnetic mold changing system allows the overall device to switch between T-core molds and U-core molds, so that T-core molds and U-core molds can be molded on one machine, resource integration and optimal configuration can be achieved, the number of equipment in the inductor production line can be reduced, and the utilization rate of molding equipment for producing inductors can be increased by merging processing techniques, which reduces the coordination and management between inductor production equipment, reduces the equipment cost and maintenance cost of the inductor production line, and improves the performance of the overall device, optimizes functional integration and efficiency, saves land area, and makes full use of the production workshop;

[0021] 2. In the present invention, through the design of the magnetic mold changing system, the magnetic mold changing method is adopted to switch the T-core mold and the U-core mold. The junction box is electrically connected to the control circuit, and the power is turned on and off under the action of the control circuit. When the power is on, several groups of equidistantly distributed magnetic modules with detection coils generate magnetic force. At this time, the magnetic force is used to make the magnetic template magnetically connected to the adjacent mold base to achieve rapid assembly. When the power is off, several groups of equidistantly distributed magnetic modules with detection coils are demagnetized. At this time, the magnetic template is disconnected from the adjacent mold base to achieve rapid disassembly, which is more convenient, faster and more convenient than the traditional mold disassembly and assembly method. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 2 The main body of the molding device of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 3 The main body of the molding device of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the production molding die in the present invention;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the driving unit in the present invention;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the magnetic mold changing system in the present invention;

[0028] Figure 7 It is a schematic diagram of a three-dimensional enlarged structure of the magnetic template in the present invention;

[0029] Figure 8 It is a three-dimensional enlarged structural schematic diagram of the installation magnetic mold base in the present invention;

[0030] In the figure: 1, molding chassis; 2, molding device body; 3, production molding die; 31, middle die fixing plate; 32, upper die base; 33, lower die base; 34, limit guide column; 35, punch mounting plate; 36, upper punch; 37, lower punch; 38, middle die; 4, upper drive unit; 5, lower drive unit; 451, drive fixing platform; 452, fixing bolts; 453, reducer; 454, servo motor; 455, transmission Screw rod; 456, drive connecting seat; 6, magnetic mold changing system; 61, upper magnetic mold changing assembly; 62, lower magnetic mold changing assembly; 63, magnetic template; 631, magnetic module with detection coil; 6311, magnetic slot; 632, junction box; 633, mounting seat; 634, mounting hole; 635, first guide hole slot; 64, magnetic mold mounting seat; 641, mounting slot; 642, second guide hole slot; 7, automatic powder feeding module. DETAILED DESCRIPTION

[0031] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0032] Example

[0033] like Figures 1 to 8 As shown, a molding device for T-core and U-core production includes: a molding chassis 1 and a molding device body 2, the molding device body 2 includes a production molding mold 3 movably installed inside the molding chassis 1, an upper drive unit 4 and a lower drive unit 5 are respectively arranged on the top and bottom of the production molding mold 3, a magnetic mold changing system 6 is arranged between the production molding mold 3 and the upper drive unit 4 and the lower drive unit 5, a mold changing window is opened on the front side of the molding chassis 1 near the magnetic mold changing system 6, an automatic powder feeding module 7 is movably installed on the rear side of the production molding mold 3, the design of the mold changing window facilitates the disassembly and assembly of the production molding mold 3 and the mold changing, and the automatic powder feeding module 7 is used to convey the powder material to the production molding mold 3, and the powder is mainly fed by a pneumatic vibrator.

[0034] The production molding mold 3 adopts any one of the T-core mold and the U-core mold; the production molding mold 3 includes a middle mold fixing plate 31, and the top and bottom of the middle mold fixing plate 31 are respectively arranged in parallel with an upper mold base 32 and a lower mold base 33, the upper mold base 32 and the lower mold base 33 are connected through four groups of limiting guide columns 34, and the four groups of limiting guide columns 34 are respectively located near the four corners, and the upper and lower ends of the four groups of limiting guide columns 34 are fixedly installed with anti-slip end seats, the four groups of limiting guide columns 34 and the middle mold fixing plate 31 are fixedly connected, and the four groups of limiting guide columns 34 and the upper mold base 32 and the lower mold base 33 are slidably connected, and the T-core mold and the U-core mold can be assembled into an integrated type through the middle mold fixing plate 31, the upper mold base 32, the lower mold base 33 and the four groups of limiting guide columns 34, so as to facilitate mold changing.

[0035] The upper die seat 32 and the lower die seat 33 are respectively fixedly mounted with corresponding upper punches 36 and lower punches 37 on one side close to the middle die fixing plate 31 through the punch mounting plate 35. The middle die 38 is fixedly mounted between the upper punches 36 and the lower punches 37 on the middle die fixing plate 31. During the forming process, the upper punches 36 and the lower punches 37 extrude the powder in the middle die 38.

[0036] The upper drive unit 4 is used to drive the upper mold of the production and molding mold 3 to move; the lower drive unit 5 is used to drive the lower mold of the production and molding mold 3 to move; the upper drive unit 4 and the lower drive unit 5 are arranged symmetrically up and down, and the upper drive unit 4 and the lower drive unit 5 both include a drive fixing platform 451 fixedly installed inside the molding machine chassis 1, and the side of the drive fixing platform 451 away from the production and molding mold 3 is fixedly installed with a reducer 453 through a fixing bolt 452, and a servo motor 454 is fixedly installed on one side of the reducer 453. The side of the drive fixing platform 451 close to the production and molding mold 3 is movably installed with a drive connecting seat 456 through a transmission screw 455. The design of the drive fixing platform 451 facilitates the installation and fixation of the reducer 453 and the servo motor 454.

[0037] The input shaft on the reducer 453 and the output shaft on the servo motor 454 are fixedly connected by a coupling, and the output shaft on the reducer 453 and the end of the transmission screw 455 away from the drive connecting seat 456 are fixedly connected by a coupling. When the servo motor 454 works, the reducer 453 runs under its action, and under the action of the reducer 453, the transmission screw 455 starts to rotate, and realizes linear motion through rotational motion. At this time, the drive connecting seat 456 approaches the production molding die 3. At this time, under the action of the upper drive unit 4 and the lower drive unit 5, the upper mold and the lower mold on the production molding die 3 are displaced toward the middle mold, and the servo screw pressing has the advantages of high precision, energy saving and environmental protection, intelligence, reduced mold damage, low noise, flexible operation, and efficient production capacity.

[0038] The magnetic mold changing system 6 is used to perform magnetic mold changing on the production molding mold 3; the magnetic mold changing system 6 is composed of an upper magnetic mold changing component 61 and a lower magnetic mold changing component 62 which are symmetrically distributed on the upper and lower sides of the production molding mold 3. The upper magnetic mold changing component 61 and the lower magnetic mold changing component 62 both include a parallel magnetic template 63 and an installation magnetic mold seat 64, and the magnetic template 63 is located between the production molding mold 3 and the installation magnetic mold seat 64. The installation magnetic mold seat 64 and the drive connecting seat 456 are fixedly connected near one end of the production molding mold 3. The installation magnetic mold seat 64 facilitates the installation of the magnetic template 63 on the one hand, and facilitates the installation and connection with the drive connecting seat 456 in the drive unit on the other hand. The design of the upper magnetic mold changing component 61 and the lower magnetic mold changing component 62 allows for quick disassembly and assembly of the upper and lower ends of the production molding mold 3.

[0039] The interior of the magnetic template 63 is embedded with a plurality of equally spaced magnetic modules 631 with detection coils. Both sides of the plurality of equally spaced magnetic modules 631 with detection coils are electrically connected with junction boxes 632. The junction boxes 632 are electrically connected to the control circuit and are powered on and off under the action of the control circuit. When powered on, the plurality of equally spaced magnetic modules 631 with detection coils generate magnetic force. At this time, the magnetic force is used to magnetically connect the magnetic template 63 with the adjacent mold base to achieve rapid assembly. When powered off, the plurality of equally spaced magnetic modules 631 with detection coils are demagnetized. At this time, the magnetic template 63 and the adjacent mold base are connected. Disconnection is achieved to realize quick disassembly, which is convenient for changing the production molding mold 3 on the one hand, and on the other hand, by switching between the T-core mold and the U-core mold, the T-core mold and the U-core mold can be molded on one machine, resource integration and optimal configuration are achieved, the number of equipment in the inductor production line is reduced, and the utilization rate of the molding equipment for producing inductors is increased by merging the processing technology, which reduces the coordination and management between the inductor production equipment, reduces the equipment cost and maintenance cost of the inductor production line, and improves the overall device performance, optimizes functional integration and efficiency, saves land area, and makes full use of the production workshop.

[0040] Any one of the several groups of equally spaced magnetic modules 631 with detection coils is provided with magnetic grooves 6311 on all sides close to the production and molding mold 3, and any one of the several groups of equally spaced magnetic modules 631 with detection coils is fixedly installed with electromagnetic coils and magnetic flux detection coils inside. The magnetic grooves 6311 are designed to control the direction of the magnetic lines of force to prevent the formation of a vacuum between the magnetic template 63 and the mold base. At the same time, the electromagnetic coil and the magnetic flux detection coil can be used to enable the magnetic module 631 to detect the clamping force when adsorbing and releasing the mold base, and the modular design is adopted to facilitate installation and maintenance.

[0041] Mounting seats 633 are fixedly installed at the centers of the four sides of the magnetic template 63, mounting holes 634 are penetrated near both ends of the mounting seat 633, first guide hole grooves 635 are penetrated at the four corners of the magnetic template 63, a mounting groove 641 is opened on one side of the magnetic template 63 near the mounting magnetic mold seat 64, and the mounting groove 641 corresponds to the mounting hole 634, and second guide hole grooves 642 are penetrated near the four corners of the magnetic mold seat 64, and the second guide hole grooves 642 correspond to the first guide hole grooves 635. The mounting seat 633, the mounting hole 634 and the mounting groove 641 facilitate the fixed connection between the magnetic template 63 and the mounting magnetic mold seat 64, and the design of the first guide hole groove 635 and the second guide hole groove 642 is conducive to accurate mold change and anti-dislocation on the one hand, and avoids obstacles in the inductor forming process on the other hand, which is conducive to its production and processing.

[0042] Implementation scheme: When performing T-core molding, the T-core mold used can be placed between the upper magnetic mold changing assembly 61 and the lower magnetic mold changing assembly 62, and the limiting guide column 34 is made to correspond to the first guide hole slot 635 and the second guide hole slot 642. Then, the control circuit is powered on, and when powered on, several groups of equally spaced magnetic modules 631 with detection coils generate magnetic force. At this time, the magnetic force is used to magnetically connect the magnetic template 63 with the adjacent mold base to achieve rapid assembly. Then, the servo motor 454 works, and the reducer 453 is in its Under the action of the reducer 453, the transmission screw 455 starts to rotate, and realizes linear motion through rotational motion. At this time, the driving connection seat 456 approaches the production molding die 3. At this time, under the action of the upper driving unit 4 and the lower driving unit 5, the upper mold and the lower mold on the production molding die 3 move toward the middle mold. When the lower punch 37 partially enters the middle mold, the displacement stops. At this time, the automatic powder feeding module 7 conveys the powder material to the production molding die 3, and mainly feeds the powder through the pneumatic vibrator. After the powder material is conveyed, the upper and lower molds continue to move until the upper punch The upper punch 36 and the lower punch 37 extrude the powder material in the middle die 38 to form. After forming, the upper punch 36 is reset, and the lower punch 37 continues to move upward to export the formed inductor base block, and then automatically resets. After completing T-core forming, the magnetic module 631 can be powered off. At this time, several groups of equidistantly distributed magnetic modules 631 with detection coils are demagnetized, and the magnetic template 63 is disconnected from the adjacent mold base to achieve rapid disassembly, and the required U-core mold implanted with the inductor coil is installed according to the above T-core mold installation method. Repeat the above operation for forming and processing. The overall device can realize the forming processing of T-core molds and U-core molds. Compared with the existing integrated inductor forming equipment, the present invention reduces the number of equipment in the inductor production line through resource integration and optimal configuration. By merging processing techniques, the utilization rate of the forming equipment for producing inductors is increased, the coordinated management between inductor production equipment is reduced, and the equipment cost and maintenance cost of the inductor production line are reduced, so that the overall device performance is improved, the function integration and efficiency are optimized, and the land area is saved, so that the production workshop is fully utilized.

[0043] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A molding device for T-core and U-core production, characterized in that, include: A molding box and a molding device body, wherein the molding device body includes a production molding die movably installed inside the molding box, an upper drive unit and a lower drive unit are respectively arranged on the top and bottom of the production molding die, a magnetic mold changing system is arranged between the production molding die and the upper drive unit and the lower drive unit, and an automatic powder feeding module is movably installed on the rear side of the production molding die; The production molding mold adopts any one of T-core mold and U-core mold; The upper driving unit is used to drive the upper mold of the production molding mold to move; The lower driving unit is used to drive the lower mold of the production molding mold to move; The magnetic die changing system is used to change the production molds magnetically.

2. A forming device for producing T-core and U-core according to claim 1, characterized in that: The production molding mold includes a middle mold fixing plate, and an upper mold base and a lower mold base are respectively arranged in parallel on the top and bottom of the middle mold fixing plate. The upper mold base and the lower mold base are connected through four groups of limit guide columns, and the four groups of limit guide columns are respectively located near the four corners, and the upper and lower ends of the four groups of limit guide columns are fixedly installed with anti-slip end seats, the four groups of limit guide columns are fixedly connected to the middle mold fixing plate, and the four groups of limit guide columns are slidably connected to the upper mold base and the lower mold base.

3. A forming device for T-core and U-core production according to claim 2, characterized in that: The upper die seat and the lower die seat are respectively fixedly installed with corresponding upper punches and lower punches on one side close to the middle die fixing plate through the punch mounting plate, and the middle die is fixedly installed between the upper punches and the lower punches on the middle die fixing plate.

4. A forming device for producing T-core and U-core according to claim 1, characterized in that: The upper drive unit and the lower drive unit are arranged symmetrically up and down. Both the upper drive unit and the lower drive unit include a drive solid platform fixedly installed inside the molding machine chassis. A reducer is fixedly installed on the side of the drive solid platform away from the production molding die through fixing bolts, a servo motor is fixedly installed on one side of the reducer, and a drive connecting seat is movably installed on the side of the drive solid platform close to the production molding die through a transmission screw.

5. A forming device for producing T-core and U-core according to claim 4, characterized in that: The input shaft on the reducer and the output shaft on the servo motor are fixedly connected through a coupling, and the output shaft on the reducer and the end of the transmission screw away from the driving connection seat are fixedly connected through a coupling.

6. A forming device for producing T-core and U-core according to claim 1, characterized in that: The magnetic mold changing system is composed of an upper magnetic mold changing assembly and a lower magnetic mold changing assembly which are symmetrically distributed on the upper and lower sides of the production molding mold. The upper magnetic mold changing assembly and the lower magnetic mold changing assembly both include a parallel magnetic mold plate and a mounting magnetic mold seat, and the magnetic mold plate is located between the production molding mold and the mounting magnetic mold seat, and the mounting magnetic mold seat and the driving connecting seat are fixedly connected near one end of the production molding mold.

7. A forming device for producing T-core and U-core according to claim 6, characterized in that: Several groups of equally spaced magnetic modules with detection coils are embedded and installed inside the magnetic template, and junction boxes are electrically connected on both sides of the several groups of equally spaced magnetic modules with detection coils. Mounting seats are fixedly installed at the center of the four sides of the magnetic template, and mounting holes are penetrated near the two ends of the mounting seats. First guide hole grooves are penetrated at the four corners of the magnetic template.

8. A forming device for T-core and U-core production according to claim 7, characterized in that: Any one of several equally spaced magnetic modules with detection coils has magnetic slots around the side close to the production molding die, and any one of several equally spaced magnetic modules with detection coils has electromagnetic coils and magnetic flux detection coils fixedly installed inside.

9. A forming device for producing T-core and U-core according to claim 6, characterized in that: A mounting groove is provided on one side of the mounting magnetic mold base near the magnetic template, and the mounting groove corresponds to the mounting hole. Second guide hole grooves are provided through the four corners of the mounting magnetic mold base, and the second guide hole grooves correspond to the first guide hole grooves.

10. A forming device for producing T-core and U-core according to claim 1, characterized in that: A mold changing window is provided on the front side of the molding machine box near the magnetic mold changing system.

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