EI transformer coil single-side shaping device

Abstract

The utility model discloses an EI transformer coil unilateral shaping device, which relates to the technical field of transformer production and comprises a base, an upper die is pressed on the base and forms a shaping cavity with the base, an EI transformer is arranged in the shaping cavity, a gap is reserved between the inner bottom wall of the shaping cavity and the coil bottom of the EI transformer, and a middle column penetrates through the EI transformer and is in plug-in fit with the base; the unilateral shaping device for the EI transformer coil can realize accurate shaping of the unilateral of the EI transformer coil, and avoids large-area extrusion inside the coil, so that the risk of damage to an insulating layer of the coil is reduced, and the product quality and the production efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of transformer manufacturing technology, specifically to a single-sided shaping device for EI transformer coils. Background Technology

[0002] A transformer is a static electromagnetic device that transforms electrical energy and transfers it from one circuit to another. An EI transformer is a type of electronic transformer whose core is composed of stacked "E"-shaped and "I"-shaped laminations; it is called an EI transformer based on its shape. EI-type inductors have a relatively simple structure, are easy to manufacture, have convenient coil winding, are inexpensive, and have good anti-saturation performance. Coil shaping is currently a widely used standard process in transformer production. However, due to gaps in the arrangement of the enameled copper wire and the insulation materials during coil winding, the finished coil may slightly exceed the standard dimensions.

[0003] Conventional shaping devices perform upper and lower compression shaping on the coil insert surface, and cannot only shape surfaces that exceed the standard size, increasing the risk of damage to the insulation layer caused by large-area compression inside the coil.

[0004] Currently, most conventional coil shaping devices perform upper and lower compression shaping on the coil insert surface. This method cannot target only the surface that exceeds the size standard, increasing the risk of large-area compression inside the coil and thus increasing the risk of insulation damage. Utility Model Content

[0005] The purpose of this invention is to provide a single-sided shaping device for EI transformer coils. This device can achieve precise shaping of one side of the EI transformer coil, avoiding large-area compression inside the coil, thereby reducing the risk of damage to the coil insulation layer and improving product quality and production efficiency.

[0006] The above-mentioned optimized structure of this utility model is achieved through the following technical solution: a single-sided shaping device for EI transformer coils, including a base;

[0007] The upper mold is pressed onto the base and forms a shaping cavity with the base. An EI transformer is installed in the shaping cavity, and a gap is left between the bottom wall of the shaping cavity and the bottom of the coil of the EI transformer.

[0008] The central column passes through the EI transformer and is plugged into the base.

[0009] In some embodiments, the base includes a base plate, and the upper mold is pressed onto the top of the base plate;

[0010] Two limiting posts are symmetrically arranged on the base plate;

[0011] The limiting groove is provided on the limiting post, and the middle post is inserted into the two limiting grooves.

[0012] In some embodiments, the base further includes a separation groove disposed on the limiting post, and the depth of the separation groove is greater than the depth of the limiting groove.

[0013] In some embodiments, the upper mold includes a shaping plate that is pressed onto the top coil of the EI transformer;

[0014] Two support plates are symmetrically arranged at the bottom of the shaping plate, and the bottom of the support plates is attached to the base.

[0015] In some embodiments, the upper mold further includes a constraint plate, which is vertically disposed on the support plate. Two constraint plates on the same side and the shaping plate form a constraint groove, and the EI transformer is inserted into the constraint groove.

[0016] In some embodiments, the upper mold further includes two extrusion blocks, which are disposed at both ends of the shaping plate, and the bottom of the extrusion blocks are attached to the top end face of the EI transformer.

[0017] In some embodiments, the central column includes a support rod that passes through the EI transformer, and both ends of the support rod are inserted into the limiting groove.

[0018] In some embodiments, the central column further includes a positioning block, which is located at the bottom of one end of the support rod.

[0019] In summary, this utility model has the following beneficial effects:

[0020] This EI transformer coil single-sided shaping device forms a shaping cavity by pressing the base and the upper mold together. At the same time, the bottom coil of the EI transformer 4 inside the shaping cavity is in a suspended state, which can achieve precise shaping of one side of the EI transformer coil, avoid unnecessary compression of other parts during the shaping process, thereby reducing the risk of damage to the coil insulation layer and improving product quality and production efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention for removing the EI transformer;

[0023] Figure 3 This is a schematic diagram of the structure of this utility model that removes the EI transformer and the central column;

[0024] Figure 4 This is a schematic diagram of the assembly structure of the EI transformer and the central column of this utility model.

[0025] In the diagram: 1. Base; 11. Base plate; 12. Limiting post; 13. Limiting groove; 14. Separation groove; 2. Upper mold; 21. Shaping plate; 22. Support plate; 23. Constraint plate; 24. Extrusion block; 3. Shaping cavity; 4. EI transformer; 5. Central column; 51. Support rod; 52. Positioning block. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] refer to Figure 1-4 An EI transformer coil single-sided shaping device includes a base 1, an upper mold 2, and a central column 5. The base 1 serves as the supporting foundation for the entire device. The upper mold 2 is pressed onto the base 1, forming a shaping cavity 3 with the base 1. The EI transformer 4 to be shaped is placed inside the shaping cavity 3. A gap is left between the bottom wall of the shaping cavity 3 and the bottom of the coil of the EI transformer 4, so that the bottom coil of the EI transformer 4 is suspended. When the upper mold 2 shapes the top coil of the EI transformer 4, unnecessary compression of the bottom coil can be avoided, thereby reducing the risk of damage to the insulation layer. The central column 5 penetrates the EI transformer 4 and is inserted into the base 1 to achieve positioning of the EI transformer 4 on the base 1.

[0028] In some embodiments, the base 1 includes a base plate 11, two limiting posts 12, and a limiting groove 13. An upper mold 2 is pressed onto the top of the base plate 11. The two limiting posts 12 are symmetrically arranged on the base plate 11. The limiting posts 12 can position and limit the position of the middle post 5. Each limiting post 12 is provided with a limiting groove 13. The two ends of the middle post 5 are respectively inserted into the two limiting grooves 13 to achieve a stable connection with the base 1.

[0029] In some embodiments, the base 1 further includes a separation groove 14, which is disposed on the limiting post 12, and the depth of the separation groove 14 is greater than the depth of the limiting groove 13. The separation groove 14 facilitates the smooth separation of the central post 5 from the base 1 after the EI transformer 4 is shaped, improving the convenience of operation, and also facilitating the observation of the changes in the bottom coil of the EI transformer 4 during the shaping process.

[0030] In some embodiments, the upper mold 2 includes a shaping plate 21 and two support plates 22. The shaping plate 21 is pressed onto the top coil of the EI transformer 4. The shaping operation of the top coil of the EI transformer 4 is achieved by the extrusion of the shaping plate 21. Two support plates 22 are symmetrically arranged at the bottom of the shaping plate 21. The bottom of the support plates 22 is attached to the base 1, which can provide stable support for the shaping plate 21 and ensure the uniform distribution of pressure during the shaping process.

[0031] In some embodiments, the upper mold 2 further includes a constraint plate 23, which is vertically disposed on the support plate 22. Two constraint plates 23 on the same side and the shaping plate 21 form a constraint groove. An EI transformer 4 is inserted into the constraint groove. The constraint groove can accurately position the EI transformer 4, prevent the EI transformer 4 from shifting during the shaping process, and ensure the accuracy of the shaping effect.

[0032] In some embodiments, the upper mold 2 further includes two extrusion blocks 24, which are disposed at both ends of the shaping plate 21, and the bottom of the extrusion blocks 24 are attached to the top end face of the EI transformer 4. The cross section of the extrusion blocks 24 can be a right triangle. By extruding the side of the two extrusion blocks 24, the shaping plate 21 and the EI transformer 4 can be aligned, thereby improving the uniformity of the force applied by the shaping plate 21 to the top coil of the EI transformer 4 and further enhancing the shaping effect on the top coil of the EI transformer 4.

[0033] In some embodiments, the central column 5 includes a support rod 51 and a positioning block 52. The support rod 51 passes through the EI transformer 4, and both ends of the support rod 51 are inserted into the limiting groove 13 to achieve a stable connection between the central column 5 and the base 1. The positioning block 52 is located at the bottom of one end of the support rod 51. The positioning block 52 can constrain the position of the EI transformer 4 on the support rod 51, thereby improving the positioning accuracy of the central column 5 on the base 1 and ensuring that the EI transformer 4 is in the correct position during the shaping process, thereby achieving precise unilateral shaping.

[0034] The specific working principle is as follows:

[0035] During the shaping process, firstly, the support rod 51 of the central column 5 is inserted into the center hole of the EI transformer 4. Then, both ends of the support rod 51 are inserted into the limiting grooves 13 on the two limiting posts 12, completing the initial installation of the central column 5, the base 1, and the EI transformer 4. Next, the assembled upper mold 2 is pressed onto the base 1, so that the bottom of the support plate 22 is in contact with the base plate 11. At the same time, the EI transformer 4 is inserted into the constraint groove, so that the bottom of the extrusion block 24 is in contact with the top end face of the EI transformer 4, completing the installation of the EI transformer 4 on the shaping device.

[0036] Slowly press down the upper mold 2, causing the shaping plate 21 to gradually approach the top coil of the EI transformer 4. At the same time, the pressing block 24 applies pressure to the top end face of the EI transformer 4, aligning the shaping plate 21 with the EI transformer 4. Since the bottom coil of the EI transformer 4 is suspended, unnecessary compression of other parts during the shaping process can be avoided, thereby reducing the risk of damage to the coil insulation layer. After shaping, lift the upper mold 2 upward, and then pull out the central column 5 with the EI transformer 4 from the limiting groove 13. Finally, pull the central column 5 out of the EI transformer 4 to obtain the shaped EI transformer 4.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An EI transformer coil unilateral shaping device, characterized by: Base (1); Upper die (2), the upper die (2) is pressed on the base (1), and the base (1) forms a shaping cavity (3), the shaping cavity (3) is provided with an EI transformer (4), and a gap is left between the bottom wall in the shaping cavity (3) and the bottom of the coil of the EI transformer (4); Middle column (5), the middle column (5) penetrates the EI transformer (4), and is inserted and matched with the base (1).

2. An EI transformer coil single side shaping device according to claim 1, characterized in that: The base (1) comprises a bottom plate (11), and the bottom plate (11) is provided with the upper die (2) on the top; Two limiting columns (12), two limiting columns (12) are symmetrically arranged on the bottom plate (11); Limiting groove (13), the limiting groove (13) is arranged on the limiting column (12), and two limiting grooves (13) are inserted with the middle column (5).

3. An EI transformer coil single side shaping device according to claim 2, characterized in that The base (1) further comprises a separation groove (14), the separation groove (14) is arranged on the limiting column (12), and the depth of the separation groove (14) is greater than that of the limiting groove (13).

4. An EI transformer coil single side shaping device according to claim 1, characterized in that: The upper die (2) comprises a shaping plate (21), and the shaping plate (21) is pressed on the top coil of the EI transformer (4); Two support plates (22), two support plates (22) are symmetrically arranged on the bottom of the shaping plate (21), and the bottom of the support plate (22) is attached to the base (1).

5. An EI transformer coil single side shaping device according to claim 4, characterized in that: The upper die (2) further comprises a constraint plate (23), the constraint plate (23) is vertically arranged on the support plate (22), and two constraint plates (23) on the same side form a constraint groove with the shaping plate (21), and the EI transformer (4) is inserted into the constraint groove.

6. An EI transformer coil single side shaping device according to claim 4, characterized in that: The upper die (2) further comprises two extrusion blocks (24), two extrusion blocks (24) are arranged at both ends of the shaping plate (21), and the bottom of the extrusion block (24) is attached to the top end face of the EI transformer (4).

7. An EI transformer coil single side shaping device according to claim 2, characterized in that: The middle column (5) comprises a supporting rod (51), the supporting rod (51) penetrates the EI transformer (4), and the supporting rod (51) is inserted and matched with the limiting groove (13) at both ends.

8. An EI transformer coil single side shaping device according to claim 7, characterized in that: The middle column (5) further comprises a positioning block (52), and the positioning block (52) is arranged at the bottom of one end of the supporting rod (51).

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