Inductor Tcore forming die

Abstract

The utility model discloses an inductor Tcore forming die which comprises a middle die, an upper die, a first lower die and a second lower die, a guide hole is formed in the middle die, and the guide hole vertically penetrates through the middle die; the upper die is arranged above the middle die, the bottom of the upper die is fixedly connected with an upper punch, and the bottom end of the upper punch directly faces the guide hole and can extend into the guide hole; the R-angle forming hole is formed in the top end of the guide hole, the R-angle forming hole is located between the Tcore plate forming space and the Tcore plate forming space, a combining part R angle at the connecting position of a Tcore plate and a Tcore column is formed, the combining strength between the Tcore plate and the Tcore column can be improved through the combining part R angle, and the Tcore plate and the Tcore column are not prone to deformation. The problem that in the coil winding process, due to the fact that the binding force between the Tcore plate and the Tcore column is not enough, the plate and the column are broken and separated is solved, and the yield of the inductor Tcore is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of inductor molds, in particular to an inductor Tcore forming mold. Background Art

[0002] Core inductors primarily consist of three windings, called the primary coil, secondary coil, and shield coil, and an iron core. Together, these three windings form a T-shaped structure. The primary and secondary coils are connected by the iron core, while the shield coil isolates the primary and secondary coils to prevent crosstalk.

[0003] In the existing technology, during the production process of an inductor, it is necessary to first make an inductor Tcore, and then wind a coil with the corresponding number of turns on the Tcore. The main body of the inductor Tcore is composed of a Tcore plate and a Tcore column. During the coil winding process, the plate and column are easily broken and separated due to insufficient bonding force between the Tcore plate and the column, causing damage to the inductor Tcore and producing defective products. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides an inductor Tcore forming mold, which can solve the problem that the Tcore plate and the column are easily broken and separated due to insufficient bonding force between the Tcore plate and the column during the coil winding process, causing damage to the inductor Tcore and producing defective products.

[0005] The utility model provides the following technical solution, an inductor Tcore forming die, comprising:

[0006] A middle mold is provided with a guide hole which vertically passes through the middle mold;

[0007] The upper die is arranged above the middle die, and the bottom of the upper die is fixedly connected with an upper punch, and the bottom end of the upper punch faces the guide hole and can extend into the guide hole;

[0008] The first lower die is arranged below the middle die, the top of the first lower die is fixedly connected to the first lower punch, the top end of the first lower punch faces the guide hole and can extend into the guide hole, and the center of the first lower punch is provided with a forming hole along the axial direction, and the forming hole passes through the first lower punch;

[0009] The second lower die is arranged below the first lower die, and the top of the second lower die is fixedly connected to the second lower punch, and the top of the second lower punch faces the first lower punch and can extend into the forming hole;

[0010] A space for the inductor Tcore material to be pressed is formed between the upper punch, the first lower punch, the second lower punch and the guide hole. An R-angle forming hole is provided at the top of the forming hole. The R-angle forming hole is used to form the R angle of the joint between the Tcore board and the Tcore column when the inductor Tcore is pressed and formed.

[0011] As a preferred solution of the present invention, when the upper punch moves to the forming position, a space for forming the Tcore plate is formed between the bottom surface of the upper punch, the top surface of the first lower punch and the guide hole.

[0012] As a preferred solution of the present invention, when the second lower punch moves to the forming position, the height of the top surface of the second lower punch is lower than the height of the top surface of the first lower punch, and a space for Tcore column forming is formed between the top of the second lower punch and the forming hole.

[0013] As a preferred solution of the present invention, the longitudinal section of the R-angle forming hole is an arc-shaped structure.

[0014] As a preferred solution of the present invention, the upper mold is connected to the pressing drive member of the press, used to drive the upper mold to move along the Z-axis direction, the first lower mold is fixedly connected to the press or the middle mold, and the second lower mold is connected to the pushing drive member of the press, used to drive the second lower mold to move along the Z-axis direction.

[0015] As a preferred solution of the present invention, the first lower punch includes a punch seat and a punch column fixedly connected to the top of the punch seat. The cross-sectional area of ​​the punch column is smaller than the cross-sectional area of ​​the punch seat. The punch seat is fixedly connected to the first lower die, and the top of the punch column penetrates into the guide hole.

[0016] As a preferred solution of the present invention, limiting strips are symmetrically provided on both sides of the punch column along the axial direction, and limiting grooves for inserting the limiting strips are provided on the inner wall of the guide hole.

[0017] As a preferred solution of the present invention, a through hole communicating with the forming hole is opened on the first lower die, the diameter of the through hole is larger than the diameter of the forming hole, and the top end of the second lower punch passes through the through hole and extends into the forming hole.

[0018] As a preferred solution of the present invention, a plurality of guide holes are provided on the middle die, and a plurality of upper punches, a first lower punch and a second lower punch are provided correspondingly.

[0019] The beneficial effect of the present invention is: by setting an R-angle forming hole at the top of the guide hole, the R-angle forming hole is located between the space where the Tcore plate is formed and the space where the Tcore plate is formed, an R-angle of the joint where the Tcore plate and the Tcore column are connected is formed, and the R-angle of the joint can improve the bonding strength between the Tcore plate and the Tcore column, thereby avoiding the problem of the plate and column being broken and separated due to insufficient bonding force between the Tcore plate and the Tcore column during the coil winding process, thereby improving the yield rate of the inductor Tcore. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the inductor Tcore molding die;

[0021] Figure 2 Schematic diagram of the structure of the first lower punch;

[0022] Figure 3 This is a schematic diagram of the main structure of the inductor Tcore;

[0023] In the figure: 1. Middle die; 101. Guide hole; 2. Upper die; 3. Upper punch; 4. First lower die; 5. First lower punch; 501. Punch seat; 502. Punch column; 503. Forming hole; 5031. R-angle forming hole; 504. Limiting strip; 6. Second lower die; 7. Second lower punch; 8. Inductor Tcore body; 801. Tcore board; 802. Tcore column; 803. R-angle of joint. DETAILED DESCRIPTION

[0024] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0025] Example:

[0026] like Figures 1 to 3As shown, an inductor Tcore forming mold includes: a middle mold 1, an upper mold 2, a first lower mold 4 and a second lower mold 6. The middle mold 1 is provided with a guide hole 101, and the guide hole 101 vertically passes through the middle mold 1; the upper mold 2 is arranged above the middle mold 1, and the bottom of the upper mold 2 is fixedly connected to an upper punch 3, and the bottom end of the upper punch 3 faces the guide hole 101 and can extend into the guide hole 101; the first lower mold 4 is arranged below the middle mold 1, and the top of the first lower mold 4 is fixedly connected to a first lower punch 5, and the top end of the first lower punch 5 faces the guide hole 101 and can extend into the guide hole 101, and a forming hole 503 is axially opened at the center of the first lower punch 5, and the forming hole 503 passes through the first lower punch 5; the second lower mold 6 is arranged below the first lower mold 4, and the top of the second lower mold 6 is fixedly connected There is a second lower punch 7, the top of the second lower punch 7 is opposite to the first lower punch 5 and can extend into the forming hole 503, the first lower die 4 is provided with a through hole connected to the forming hole 503, the diameter of the through hole is larger than the diameter of the forming hole 503, the top of the second lower punch 7 passes through the through hole and extends into the forming hole 503; a space for the inductor Tcore material to be pressed is formed between the upper punch 3, the first lower punch 5, the second lower punch 7 and the guide hole 101, the longitudinal cross-section of the space for the inductor Tcore material to be pressed is T-shaped, and an R-angle forming hole 5031 is provided at the top of the forming hole 503, and the R-angle forming hole 5031 is used to form the joint R angle 803 between the Tcore plate 801 and the Tcore column 802 when the inductor Tcore is pressed.

[0027] Specifically, the inductor Tcore material is placed in the guide hole 101, and the second lower punch 7 is placed in the guide hole 101 of the first lower punch 5, and the inductor Tcore material is filled into the T-shaped space of the inductor Tcore material to be pressed. Then the upper mold 2 moves downward to make the upper punch 3 extend into the guide hole 101, and pressure is applied to the inductor Tcore material. The positions of the first lower punch 5 and the second lower punch 7 are fixed, and the inductor Tcore material is compressed in the space to be pressed of the inductor Tcore material. After the inductor Tcore material therein is compacted and compacted to form a pressed inductor Tcore, an R-angle forming hole 5031 is provided at the top of the forming hole 503 to form an R-angle 803 of the joint between the Tcore plate 801 and the Tcore column 802, which can improve the bonding strength between the Tcore plate 801 and the Tcore column 802, and avoid the problem of the plate and column being broken and separated due to insufficient bonding force between the Tcore plate 801 and the Tcore column 802 during the coil winding process.

[0028] In this embodiment, if Figure 1As shown, when the upper punch 3 moves to the forming position, a space for forming the Tcore board 801 is formed between the bottom surface of the upper punch 3, the top surface of the first lower punch 5 and the guide hole 101, and the inductor Tcore material is filled into the space for forming the Tcore board 801. The Tcore board 801 is formed when the upper punch 3 applies pressure to the inductor Tcore material.

[0029] In this embodiment, if Figure 1 As shown, when the second lower punch 7 moves to the forming position, the height of the top surface of the second lower punch 7 is lower than the height of the top surface of the first lower punch 5, and a space for forming the Tcore column 802 is formed between the top of the second lower punch 7 and the forming hole 503. The inductor Tcore material is filled into the space for forming the Tcore column 802, and the Tcore column 802 is formed when the upper punch 3 applies pressure to the inductor Tcore material.

[0030] In this embodiment, the longitudinal cross-section of the R-angle forming hole 5031 is an arc-shaped structure. The R-angle forming hole 5031 is placed between the space formed by the Tcore board 801 and the space formed by the Tcore board 801, forming an R-angle 803 at the connection between the Tcore board 801 and the Tcore column 802. The curvature of the R-angle forming hole 5031 can be designed according to requirements.

[0031] In this embodiment, if Figure 1 As shown, the upper die 2 is connected to the pressing drive of the press, which can be a pressing hydraulic cylinder, which is used to drive the upper die 2 to move along the Z-axis direction, and the pressing drive drives the upper die 2 and the upper punch 3 to move, so as to apply pressure to the inductor Tcore material. The first lower die 4 is fixedly connected to the press or the middle die 1, and is used to fix the position of the first lower die 4 and the first lower punch 5. The second lower die 6 is connected to the pushing drive of the press, and the pushing drive can be a pushing hydraulic cylinder, which is used to drive the second lower die 6 to move along the Z-axis direction, and the pushing drive is used to drive the second lower die 6 and the second lower punch 7 to move. The second lower punch 7 has two positioning positions, one of which is that the second lower punch 7 is placed in the forming hole 503 of the first lower punch 5, which is the forming and pressing position of the inductor Tcore, and the other is that the guide hole 101 extends from the top of the second lower punch 7, which is used to eject the pressed inductor Tcore from the space to be pressed of the inductor Tcore material.

[0032] In this embodiment, if Figure 2As shown, the first lower punch 5 includes a punch seat 501 and a punch column 502 fixedly connected to the top of the punch seat 501. The punch column 502 and the punch seat 501 are integrally formed. The cross-sectional area of ​​the punch column 502 is smaller than the cross-sectional area of ​​the punch seat 501. The punch seat 501 is fixedly connected to the first lower die 4. The top of the punch column 502 penetrates into the guide hole 101. The first lower die 4 is provided with a first lower punch fixing hole. The punch seat 501 is inserted into the first lower punch fixing hole for installation and fixation. The punch seat 501 is embedded in the first lower die 4 to provide support for the punch column 502, thereby preventing the punch column 502 from being easily bent due to excessive force, thereby improving stability and service life.

[0033] In this embodiment, if Figure 2 As shown, limit strips 504 are axially symmetrically arranged on both sides of the punch column 502, and the limit strips 504 are integrally formed with the punch column 502. A limit groove for inserting the limit strip 504 is opened on the inner wall of the guide hole 101. When the punch column 502 is installed into the guide hole 101, the limit strip 504 is inserted into the limit groove to limit the installation position of the punch column 502, so as to avoid the punch column 502 being installed in the guide hole 101 at a position that is too high or too low, thereby affecting the molding quality of the inductor Tcore.

[0034] In this embodiment, if Figure 1 As shown, a plurality of guide holes 101 are provided on the middle die 1, and a plurality of upper punches 3, first lower punches 5 and second lower punches 7 are provided correspondingly. One of the corresponding guide holes 101, upper punch 3, first lower punch 5 and second lower punch 7 is a group of inductor Tcore forming structures. By providing multiple groups of inductor Tcore forming structures, multiple inductor Tcores can be pressed and formed at the same time, greatly improving work efficiency and output.

[0035] Implementation scheme: When in use, the inductor Tcore material is placed in the guide hole 101, part of the inductor Tcore material is filled into the space between the top of the second lower punch 7 and the forming hole 503 to form the Tcore column 802, and the remaining part of the inductor Tcore material is filled into the space between the top surface of the first lower punch 5 and the guide hole 101 to form the Tcore plate 801. The upper die 2 is driven downward by the pressing driving member to make the upper punch 3 extend into the guide hole 101, and the inductor Tcore material is pressed. The position of the first lower punch 5 and the second lower punch 7 is fixed to form the inductor Tcore material in the inductor Tc The ore material is compressed in the pressing space, and the inductor Tcore material therein is compacted to form a pressed inductor Tcore. An R-angle forming hole 5031 is provided at the top of the forming hole 503 to form an R-angle 803 at the junction between the Tcore plate 801 and the Tcore column 802. The R-angle 803 at the junction can improve the bonding strength between the Tcore plate 801 and the Tcore column 802, thereby avoiding the problem of the plate and column being broken and separated due to insufficient bonding force between the Tcore plate 801 and the Tcore column 802 during the coil winding process, thereby improving the yield rate of the inductor Tcore.

[0036] 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.

[0037] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. An inductor Tcore forming die, characterized in that: include: A middle mold is provided with a guide hole which vertically passes through the middle mold; The upper die is arranged above the middle die, and the bottom of the upper die is fixedly connected with an upper punch, and the bottom end of the upper punch faces the guide hole and can extend into the guide hole; The first lower die is arranged below the middle die, the top of the first lower die is fixedly connected to the first lower punch, the top end of the first lower punch faces the guide hole and can extend into the guide hole, and the center of the first lower punch is provided with a forming hole along the axial direction, and the forming hole passes through the first lower punch; The second lower die is arranged below the first lower die, and the top of the second lower die is fixedly connected to the second lower punch, and the top of the second lower punch faces the first lower punch and can extend into the forming hole; A space for the inductor Tcore material to be pressed is formed between the upper punch, the first lower punch, the second lower punch and the guide hole. An R-angle forming hole is provided at the top of the forming hole. The R-angle forming hole is used to form the R angle of the joint between the Tcore board and the Tcore column when the inductor Tcore is pressed and formed.

2. The inductor Tcore forming die according to claim 1, characterized in that: When the upper punch moves to the forming position, a space for forming the Tcore board is formed between the bottom surface of the upper punch, the top surface of the first lower punch and the guide hole.

3. The inductor Tcore forming die according to claim 1, characterized in that: When the second lower punch moves to the forming position, the height of the top surface of the second lower punch is lower than the height of the top surface of the first lower punch, and a space for Tcore column forming is formed between the top of the second lower punch and the forming hole.

4. The inductor Tcore forming die according to claim 1, characterized in that: The longitudinal section of the R-angle forming hole is an arc-shaped structure.

5. The inductor Tcore forming die according to claim 1, characterized in that: The upper die is connected to the pressing drive of the press, and is used to drive the upper die to move along the Z-axis direction. The first lower die is fixedly connected to the press or the middle die, and the second lower die is connected to the pushing drive of the press, and is used to drive the second lower die to move along the Z-axis direction.

6. The inductor Tcore forming die according to claim 1, characterized in that: The first lower punch includes a punch seat and a punch column fixedly connected to the top of the punch seat. The cross-sectional area of ​​the punch column is smaller than that of the punch seat. The punch seat is fixedly connected to the first lower die, and the top of the punch column penetrates into the guide hole.

7. The inductor Tcore forming die according to claim 6, characterized in that: Limiting strips are symmetrically arranged on both sides of the punch column along the axial direction, and limiting grooves for inserting the limiting strips are opened on the inner wall of the guide hole.

8. The inductor Tcore forming die according to claim 1, characterized in that: A through hole communicating with the forming hole is opened on the first lower die, the diameter of the through hole is larger than the diameter of the forming hole, and the top end of the second lower punch passes through the through hole and extends into the forming hole.

9. The inductor Tcore forming die according to claim 1, characterized in that: A plurality of guide holes are opened on the middle die, and a plurality of upper punches, a first lower punch and a second lower punch are correspondingly provided.

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