A large-size T-core molding device and production method thereof

Abstract

The present invention relates to a molding device for a large-size T-core and a production method thereof, comprising: a molding device body for the large-size T-core, the molding device body is composed of a lower punch die group, a middle die group, an upper punch die group, a lower servo drive unit, an upper servo drive unit, a powder feeding module and a guide mechanism, the lower punch die group comprises a lower punch sleeve, a lower punch head and a lower die seat, the middle die group comprises a middle die seat, a middle die, a fixing platform, a telescopic cylinder and a lifting platform, the lower punch sleeve and the lower punch head are used to increase the height of the middle column of the large-size T-core, the telescopic cylinder and the lifting platform are used to thicken the swing thickness of the large-size T-core, the powder feeding module is used to carry out powder material transmission in the molding process of the large-size T-core, the guide mechanism is used to carry out guiding and limiting in the molding process of the large-size T-core, the whole increases the powder filling amount of the middle die by expanding the internal space of the middle die, thereby thickening the swing thickness and increasing the height of the middle column, so that the overall molding device can manufacture large-size T-cores, meeting the market demand for inductance characteristics.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor production, and in particular to a large-size T-core molding device and a production method thereof. Background Art

[0002] In today's electronic component field, one-piece molded inductors have become an indispensable part of many high-end electronic devices due to their superior performance and reliability. The traditional one-piece molded inductor molding technology is to wind the copper wire into a coil of fixed shape and size according to the specified requirements, and use electric current to melt and weld the wound coil to the foot of the sheet. Finally, the spot-welded sheet is placed in the mold, and the iron powder is wrapped and stamped using a hydraulic press. However, the position of the coil is difficult to keep fixed and is prone to misalignment, which directly affects the reliability and quality defects of the product. In order to overcome this defect, the T-Core inductor process has emerged. Specifically, T-core The process steps are as follows: first, cold pressing: the cold pressing molding machine presses specific loose powder materials into a T-core with a certain shape and strength through a special mold, and enhances the strength by baking; then winding: the automatic winding machine arranges specific copper wires on the cold pressed core center column in an orderly manner according to the specified number of turns and spacing, and fixes the two ends of the wire ends on the cold pressed core boss pendulum, and then hot pressing: the inductor hot press machine adds a certain amount of powder material to the semi-finished product after winding, and presses it under high temperature and high pressure. The product has inherent characteristics, which can significantly improve the product's reliability, density, electrical performance and reduce losses, while improving production efficiency and reducing costs.

[0003] In the prior art, enterprises have increasingly higher requirements for the performance of inductors. Existing products can no longer meet the market demand for inductor characteristics. Existing molding machines can only produce small-sized T-cores. Therefore, the existing T-core molding device is improved, and a large-sized T-core molding device and design method are designed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a forming device for a large-sized T-core and a production method thereof. As the lower punch descends, a high and medium column of the large-sized T-core can be formed inside the lower punch sleeve, and at the same time, the telescopic cylinder is expanded upward. Under the action of the telescopic cylinder, the lifting platform is raised, and at this time, the middle die seat is raised accordingly, so that the die surface is raised, and combined with the lower punch die group, a thickened pendulum thickness of the large-sized T-core can be formed inside the middle die, and by expanding the internal space of the middle die, the powder filling amount of the middle die is increased, thereby thickening the pendulum thickness and increasing the height of the middle column, so that the overall forming device can produce a large-sized T-core, thereby improving the practicality of the overall forming device, and by placing the middle die surface, the lower punch and the top of the lower punch sleeve at the same horizontal line, the pressure of the middle column and the pendulum for extrusion molding is controlled to ensure the bonding strength of the pendulum and the middle column, and at the same time, the accuracy of the middle column and the pendulum thickness of the large-sized T-core can be ensured. Compared with the existing T-core lower punch die group, the design of the lower punch die group adds a lower punch sleeve that is compatible with the middle die and the lower punch, and the modified structure is simple.

[0005] The present invention provides the following technical solution: a large-size T-core forming device, comprising: a forming device body for a large-size T-core, the forming device body being composed of a lower punch die set, a middle die set, an upper punch die set, a lower servo drive unit, an upper servo drive unit, a powder feeding module and a guide mechanism;

[0006] The lower punch die set includes a lower punch sleeve, a lower punch head and a lower die seat;

[0007] The middle die set includes a middle die base, a middle die, a fixing table, a telescopic cylinder and a lifting table;

[0008] The lower punch sleeve and lower punch are used to increase the height of the center column of large-size T-core;

[0009] The middle die holder and lifting platform are used to thicken the swing thickness of large-size T-core;

[0010] The powder feeding module is used to convey powder materials in the large-size T-core molding process;

[0011] The guide mechanism is used to guide and limit the large-size T-core forming process.

[0012] As a preferred solution of the present invention, the lower punch die group, the middle die group, and the upper punch die group are arranged in sequence from bottom to top, the lower servo drive unit and the upper servo drive unit are arranged symmetrically up and down, and the lower servo drive unit and the upper servo drive unit act on the lower punch die group and the upper punch die group respectively, the powder feeding module is located on the rear side of the middle die group, and the guide mechanism is composed of four groups of guide rods.

[0013] As a preferred solution of the present invention, the lower punch sleeve is arranged on the outer surface of the lower punch, the lower die base is located at the bottom of the lower punch, the middle die is fixedly installed on the top of the middle die base, the fixing platform is located on both sides of the middle die base, and the fixing platform and the frame are fixedly connected, and a lifting platform is movably installed on the top of the fixing platform through a telescopic cylinder, and the lifting platform and the middle die base are fixedly connected, the lifting platform is arranged in a Z shape, and the upper punch die group includes an upper punch matched with the middle die and an upper die base.

[0014] As a preferred solution of the present invention, a large-sized T-core center column forming hole compatible with the lower punch is opened through the interior of the lower punch sleeve, and the lower punch sleeve is fixedly installed on the top of the punch sleeve seat, and the punch sleeve seat and the fixed platform are fixedly connected by a connecting positioning frame.

[0015] As a preferred solution of the present invention, the lower punch is fixedly mounted on the top of the lower die base through a lower mounting plate, a lower pad is fixedly mounted between the lower mounting plate and the lower die base, and lower guide holes compatible with the guide mechanism are opened through the four corners of the lower die base.

[0016] As a preferred solution of the present invention, middle guide holes compatible with the guide mechanism are opened through the four corners of the middle mold base, and a large-sized T-core molding groove compatible with the lower punch sleeve is opened through the interior of the middle mold.

[0017] As a preferred solution of the present invention, the upper punch is fixedly mounted on the bottom of the upper die base through an upper mounting plate, an upper pad is fixedly mounted between the upper mounting plate and the upper die base, and upper guide holes compatible with the guide mechanism are opened through the four corners of the upper die base.

[0018] As a preferred solution of the present invention, the powder feeding module includes a powder feeding platform fixedly installed at the top end of the rear side of the middle mold, and a powder box is slidably installed on the top of the powder feeding platform through an electric slide, and a powder outlet matching the large-size T-core forming groove is provided on the bottom of the powder box.

[0019] As a preferred solution of the present invention, a convex sliding table is provided on the top surface of the powder feeding table near one end of the middle mold, and electric slides are located on both sides of the convex sliding table, a powder material tube is installed through the end of the top of the powder box away from the middle mold, and a pneumatic vibrator is fixedly installed on the end of the powder material tube away from the powder box.

[0020] A method for producing a large-size T-core molding device comprises the following steps:

[0021] S1: Adjust the position so that the die surface, the lower punch and the top of the lower punch sleeve are on the same horizontal line;

[0022] S2: Control the program to lower the lower punch and raise the middle die to expand the internal space of the middle die;

[0023] S3: The powder feeding module transfers powder to the large-size T-core forming tank;

[0024] S4: The upper and lower punches punch the powder material of the large-sized T-core forming groove;

[0025] S5: The mold is reset as a whole to remove the large-sized T-core molded parts.

[0026] The beneficial effects of the present invention are:

[0027] 1. In the present invention, as the lower punch descends, a high and medium column of a large-sized T-core can be formed inside the lower punch sleeve, and at the same time, the telescopic cylinder is expanded upward, and under the action of the telescopic cylinder, the lifting platform is raised, and the middle die seat is raised accordingly, so that the die surface is raised, and combined with the lower punch die set, a thickened pendulum thickness of a large-sized T-core can be formed inside the middle die, and by expanding the internal space of the middle die, the powder filling amount of the middle die is increased, so that the pendulum thickness is thickened and the middle column is increased, so that the overall molding device can produce a large-sized T-core, which effectively solves the problem that the existing molding machine can only produce small-sized T-cores, meets the market demand for inductance characteristics, and improves the practicality of the overall molding device;

[0028] 2. In the present invention, by placing the middle die surface and the top of the lower punch and the lower punch sleeve at the same horizontal line, the pressure of the middle column and the pendulum for extrusion molding is controlled to ensure the bonding strength of the pendulum and the middle column. At the same time, the accuracy of the thickness of the middle column and the pendulum of the large-size T-core can be ensured. The design of the lower punch die group is compared with the existing T-core lower punch die group, and a lower punch sleeve compatible with the middle die and the lower punch is added. The modified structure is simple, the cost is low, and it is economical and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The overall three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 2 The overall three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 3 The overall three-dimensional structure of the present invention is shown in FIG. Figure 3 ;

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure of the lower punch die set in the present invention;

[0033] Figure 5 It is a schematic diagram of the three-dimensional structure of the middle module in the present invention;

[0034] Figure 6 It is a schematic diagram of the three-dimensional structure of the upper punch die set in the present invention;

[0035] Figure 7It is a schematic diagram of the three-dimensional structure of the powder feeding module in the present invention;

[0036] Figure 8 It is a schematic diagram of the overall production method of the present invention;

[0037] In the figure: 1, forming device body; 2, lower punch die set; 21, lower punch sleeve; 211, large-size T-core middle column forming hole; 212, punch sleeve seat; 213, connecting positioning frame; 22, lower punch; 221, lower mounting plate; 222, lower pad; 23, lower die seat; 231, lower guide hole; 3, middle die set; 31, middle die seat; 311, middle guide hole; 32, middle die; 321, large-size T-core forming groove; 33 , fixing table; 34, telescopic cylinder; 35, lifting table; 4, upper punch die set; 41, upper punch; 411, upper mounting plate; 412, upper pad; 42, upper die seat; 421, upper guide hole; 5, lower servo drive unit; 6, upper servo drive unit; 7, powder feeding module; 71, powder feeding table; 711, convex sliding table; 72, electric slide; 73, powder box; 731, powder tube; 732, pneumatic vibrator; 8, guide mechanism. DETAILED DESCRIPTION

[0038] 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.

[0039] Example

[0040] like Figures 1 to 8 As shown, a forming device for a large-size T-core comprises: a forming device body 1 for a large-size T-core, the forming device body 1 is composed of a lower punch die group 2, a middle die group 3, an upper punch die group 4, a lower servo drive unit 5, an upper servo drive unit 6, a powder feeding module 7 and a guide mechanism 8. The lower punch die group 2, the middle die group 3, and the upper punch die group 4 are arranged in sequence from bottom to top, the lower servo drive unit 5 and the upper servo drive unit 6 are arranged symmetrically up and down, and the lower servo drive unit 5 and the upper servo drive unit 6 act on the lower punch die group 2 and the upper punch die group 4 respectively, and the powder feeding module 7 is located on the rear side of the middle die group 3. Under the action of the lower servo drive unit 5 and the upper servo drive unit 6, the lower punch die group 2 and the upper punch die group 4 approach the middle die group 3 to perform large-size T-core forming stamping, and under the high precision, high stability and high reliability of the servo drive unit, the overall stamping and forming is stable and reliable, and the forming effect is better.

[0041] The lower punch die group 2 includes a lower punch sleeve 21, a lower punch 22 and a lower die base 23. The middle die group 3 includes a middle die base 31, a middle die 32, a fixing platform 33, a telescopic cylinder 34 and a lifting platform 35. Compared with the existing T-core lower punch die group, the design of the lower punch die group 2 adds a lower punch sleeve that is compatible with the middle die and the lower punch. The modified structure is simple, the cost is low, and it is economical and effective.

[0042] The lower punch sleeve 21 and the lower punch 22 are used to increase the height of the middle column of the large-sized T-core; the lower punch sleeve 21 is sleeved on the outer surface of the lower punch 22, and the lower die seat 23 is located at the bottom of the lower punch 22. As the lower punch 22 descends, the high and medium columns of the large-sized T-core can be formed inside the lower punch sleeve 21. During operation, the lower punch 22 is inserted into the lower punch sleeve 21, and the top ends of the lower punch 22 and the lower punch sleeve 21 are on the same horizontal line, ensuring the accuracy of the height of the middle column of the large-sized T-core.

[0043] The lower punch sleeve 21 has a large-sized T-core column forming hole 211 adapted to the lower punch 22, and the lower punch sleeve 21 is fixedly mounted on the top of the punch sleeve seat 212. The punch sleeve seat 212 and the fixing platform 33 are fixedly connected by connecting the positioning frame 213. The lower punch 22 is fixedly mounted on the top of the lower die seat 23 through the lower mounting plate 221. A lower pad 222 is fixedly mounted between the lower mounting plate 221 and the lower die seat 23. During the descent of the lower punch 22, the large-sized T-core The depth of the center column forming hole 211 near the top of the lower punch 22 determines the height of the center column of the large-size T-core, and the punch sleeve seat 212 and the connecting positioning frame 213 are used to install the lower punch sleeve 21 and ensure its stability and reliability. At the same time, the design of the lower pad 222 can reduce the friction, wear and noise of the lower punch 22, thereby improving the service life and production efficiency. Under the action of the lower servo drive unit 5, the lower die seat 23 can drive the lower punch 22 to perform downward punching inside the lower punch sleeve 21.

[0044] The middle mold base 31 and the lifting platform 35 are used to thicken the swing thickness of the large-size T-core; the middle mold 32 is fixedly installed on the top of the middle mold base 31, the fixed platform 33 is located on both sides of the middle mold base 31, and the fixed platform 33 is fixedly connected to the frame, and the top of the fixed platform 33 is movably installed with a lifting platform 35 through a telescopic cylinder 34, and the lifting platform 35 is fixedly connected to the middle mold base 31, and the lifting platform 35 is arranged in a Z shape, and the telescopic cylinder 34 is expanded upward, and under the action of the telescopic cylinder 34, the lifting platform 35 is lifted. High, at this time, the middle die seat 31 rises accordingly, so that the die surface rises, and combined with the lower punch die set 2, a thickened swing thickness of a large-sized T-core can be formed inside the middle die 32. During operation, the middle die 32 is sleeved on the outer surface of the lower punch sleeve 21, and the die surface of the middle die 32 and the top of the lower punch 22 and the lower punch sleeve 21 are on the same horizontal line, ensuring the accuracy of the swing thickness of the large-sized T-core, and the lifting platform 35 is arranged in a Z shape, which can facilitate the fixed connection between the lower punch sleeve 21 and the fixing platform 33.

[0045] A large-sized T-core forming groove 321 adapted to the lower punch sleeve 21 is formed through the interior of the middle mold 32. During the rising process of the middle mold 32, the depth of the large-sized T-core forming groove 321 near the top of the lower punch sleeve 21 determines the thickness of the large-sized T-core pendulum.

[0046] The upper punch die set 4 includes an upper punch 41 and an upper die seat 42 adapted to the middle die 32 . During the forming process, the upper punch 41 is inserted into the middle die 32 under the action of the upper die seat 42 to perform upward punching on the introduced powder.

[0047] The upper punch 41 is fixedly mounted on the bottom of the upper die base 42 through the upper mounting plate 411. An upper pad 412 is fixedly mounted between the upper mounting plate 411 and the upper die base 42. The design of the upper pad 412 can reduce the friction, wear and noise of the upper punch 41, thereby improving the service life and production efficiency. At the same time, under the action of the upper servo drive unit 6, the upper die base 42 can drive the upper punch 41 to insert into the large-size T-core forming groove 321 for upper punching.

[0048] The powder feeding module 7 is used to convey powder materials in the large-size T-core forming process; the powder feeding module 7 includes a powder feeding platform 71 fixedly installed at the top end of the rear side of the middle mold 32, and a powder box 73 is slidably installed on the top of the powder feeding platform 71 through an electric slide 72. The bottom surface of the powder box 73 is provided with a lower powder opening that matches the large-size T-core forming groove 321. Under the action of the electric slide 72, the powder box 73 begins to move toward the middle mold 32 until the lower powder opening at the bottom of the powder box 73 is aligned with the large-size T-core forming groove 321. The groove 321 is aligned, and a large amount of powder in the powder box 73 automatically falls into the large-size T-core forming groove 321. After the powder is discharged, the powder box 73 is automatically reset under the action of the electric slide 72 to prevent obstruction to subsequent stamping and forming. The design of the powder feeding platform 71 facilitates the installation of the whole and the middle mold 32, and the design of the electric slide 72 enables the whole to realize automatic powder discharge, and has the characteristics of high efficiency, precision, stability, etc., which can greatly improve production efficiency, reduce labor costs, and reduce production risks.

[0049] A convex sliding table 711 is provided on the top surface of the powder feeding table 71 near one end of the middle mold 32, and the electric slide 72 is located on both sides of the convex sliding table 711. A powder tube 731 is installed through the end of the top of the powder box 73 away from the middle mold 32, and a pneumatic vibrator 732 is fixedly installed on the end of the powder tube 731 away from the powder box 73. The convex sliding table 711 assists the powder box 73 to slide to the mold surface of the middle mold 32, and effectively prevents the powder box 73 from leaking powder during the sliding process, ensuring smooth powder feeding. At the same time, the design of the powder tube 731 and the pneumatic vibrator 732 can realize automatic powder feeding to the powder box 73, and can effectively solve the problems of agglomeration and blockage, thereby improving the conveying efficiency.

[0050] The guide mechanism 8 is used to guide and limit the large-size T-core molding process; the guide mechanism 8 is composed of four groups of guide rods. The design of the guide mechanism 8 is mainly to improve the stability and reliability of the large-size T-core molding process.

[0051] The lower die base 23 has four corners through which lower guide holes 231 compatible with the guide mechanism 8 are opened, the middle die base 31 has four corners through which middle guide holes 311 compatible with the guide mechanism 8 are opened, and the upper die base 42 has four corners through which upper guide holes 421 compatible with the guide mechanism 8 are opened, and four groups of guide rods penetrate the lower guide holes 231, the middle guide holes 311, and the upper guide holes 421 in sequence. The design of the lower guide holes 231, the middle guide holes 311, and the upper guide holes 421 combined with the guide mechanism 8 enables the overall device to perform high-precision stamping operations.

[0052] A method for producing a large-size T-core molding device comprises the following steps:

[0053] S1. Adjust the position so that the die surface, lower punch and the top of the lower punch sleeve are on the same horizontal line;

[0054] S2, control the program to make the lower punch descend and the middle die rise, thus expanding the internal space of the middle die;

[0055] S3, powder feeding module transfers powder to the large-size T-core forming tank;

[0056] S4, upper and lower punch parts punch the powder material of the large-sized T-core forming groove;

[0057] S5: The mold is reset as a whole to remove the large-sized T-core molded parts.

[0058] Implementation plan: In actual production, the position is adjusted through the control program, and under the action of the lower servo drive unit 5 and the telescopic cylinder 34, the die surface of the middle die 32 and the top of the lower punch 22 and the lower punch sleeve 21 are at the same horizontal line to ensure the accuracy of the middle column and the thickness of the large-sized T-core. Then, the production of large-sized T-core molding begins. As the lower punch 22 descends, the middle column of the large-sized T-core can be formed inside the lower punch sleeve 21. At the same time, the telescopic cylinder 34 is expanded upward, and under the action of the telescopic cylinder 34, the lifting platform 35 is raised. At this time, the middle die seat 31 rises accordingly, so that the die surface rises, and combined with the lower punch die set 2, a thickened swing thickness of a large-sized T-core can be formed inside the middle die 32, thereby increasing the molding stroke, expanding the internal space of the middle die, and increasing the amount of powder filled in the middle die. Subsequently, under the action of the electric slide 72, the powder box 73 begins to move toward the middle die 32, and the bottom surface of the powder box 73 slides on the convex sliding table 711 to the die surface of the middle die 32 until the lower powder port at the bottom of the powder box 73 is aligned with the large-sized T-core molding groove 321. At this time, a large amount of powder in the powder box 73 automatically falls into the large-sized T- After the powder is put into the inside of the core forming groove 321, the powder box 73 is automatically reset under the action of the electric slide 72 to prevent obstruction to the subsequent stamping and forming. Subsequently, under the action of the lower servo drive unit 5, the lower die seat 23 can drive the lower punch 22 to perform downward stamping inside the lower punch sleeve 21. At the same time, under the action of the upper servo drive unit 6, the upper die seat 42 can drive the upper punch 41 to insert into the large-sized T-core forming groove 321 for upward stamping, and the powder material of the large-sized T-core forming groove 321 is stamped by the upper and lower punch parts. After the stamping parts are completed, the whole The main mold is reset, and the large-sized T-core molded part is removed at the same time, and the above-mentioned powder filling action is repeated. The formed large-sized T-core is pushed to the track, and slides into the receiving box through the track. During the whole molding process, the stamping guidance is carried out by the guide mechanism 8 to ensure stable, reliable and precise stamping. Compared with the existing T-core molding device, the present invention increases the powder filling amount of the middle mold by expanding the internal space of the middle mold, thereby thickening the pendulum thickness and increasing the height of the middle column, thereby producing a large-sized T-core, which can improve the overall applicability of the molding device.

[0059] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional 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.

[0060] 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 large-size T-core forming device, characterized in that: include: The main body of the molding device for large-size T-core is composed of a lower punch die set, a middle die set, an upper punch die set, a lower servo drive unit, an upper servo drive unit, a powder feeding module and a guide mechanism; The lower punch die set includes a lower punch sleeve, a lower punch head and a lower die seat; The middle die set includes a middle die base, a middle die, a fixing table, a telescopic cylinder and a lifting table; The lower punch sleeve and lower punch are used to increase the height of the center column of large-size T-core; The middle die holder and lifting platform are used to thicken the swing thickness of large-size T-core; The powder feeding module is used to convey powder materials in the large-size T-core molding process; The guide mechanism is used to guide and limit the large-size T-core forming process.

2. A large-size T-core forming device according to claim 1, characterized in that: The lower punch die group, the middle die group, and the upper punch die group are arranged in sequence from bottom to top, the lower servo drive unit and the upper servo drive unit are arranged symmetrically up and down, and the lower servo drive unit and the upper servo drive unit act on the lower punch die group and the upper punch die group respectively, the powder feeding module is located at the rear side of the middle die group, and the guide mechanism is composed of four groups of guide rods.

3. A large-size T-core forming device according to claim 1, characterized in that: The lower punch sleeve is arranged on the outer surface of the lower punch, the lower die seat is located at the bottom of the lower punch, the middle die is fixedly installed on the top of the middle die seat, the fixing platform is located on both sides of the middle die seat, and the fixing platform and the frame are fixedly connected, and a lifting platform is movably installed on the top of the fixing platform through a telescopic cylinder, and the lifting platform and the middle die seat are fixedly connected, and the lifting platform is arranged in a Z shape, and the upper punch die group includes an upper punch matched with the middle die and an upper die seat.

4. A large-size T-core forming device according to claim 3, characterized in that: A large-sized T-core center column forming hole adapted to the lower punch is opened through the interior of the lower punch sleeve. The lower punch sleeve is fixedly installed on the top of the punch sleeve seat, and the punch sleeve seat and the fixing platform are fixedly connected by a connecting positioning frame.

5. A large-size T-core forming device according to claim 3, characterized in that: The lower punch is fixedly mounted on the top of the lower die base through a lower mounting plate, a lower pad is fixedly mounted between the lower mounting plate and the lower die base, and lower guide holes matching the guide mechanism are penetrated through the four corners of the lower die base.

6. A large-size T-core forming device according to claim 3, characterized in that: Central guide holes adapted to the guide mechanism are provided through the four corners of the central die base, and a large-size T-core forming groove adapted to the lower punch sleeve is provided through the interior of the central die.

7. A large-size T-core forming device according to claim 3, characterized in that: The upper punch is fixedly mounted on the bottom of the upper die seat through an upper mounting plate, an upper pad is fixedly mounted between the upper mounting plate and the upper die seat, and upper guide holes matching the guide mechanism are penetrated through the four corners of the upper die seat.

8. A large-size T-core forming device according to claim 1, characterized in that: The powder feeding module includes a powder feeding platform fixedly installed at the top of the rear side of the middle mold. A powder box is slidably installed on the top of the powder feeding platform through an electric slide. The bottom of the powder box is provided with a powder outlet that matches the large-size T-core forming groove.

9. A large-size T-core forming device according to claim 8, characterized in that: A convex sliding table is provided on the top surface of the powder feeding table near one end of the middle mold, and electric slides are located on both sides of the convex sliding table. A powder material tube is installed through the end of the top of the powder box away from the middle mold, and a pneumatic vibrator is fixedly installed on the end of the powder material tube away from the powder box.

10. A method for producing a large-size T-core forming device, applicable to a large-size T-core forming device according to any one of claims 1 to 9, characterized in that: The steps include: S1. Adjust the position so that the die surface, lower punch and the top of the lower punch sleeve are on the same horizontal line; S2, control the program to make the lower punch descend and the middle die rise, thus expanding the internal space of the middle die; S3, powder feeding module transfers powder to the large-size T-core forming tank; S4, upper and lower punch parts punch the powder material of the large-sized T-core forming groove; S5. The mold is reset as a whole to remove the large-sized T-core molded parts.

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