Novel closed wound core winding former

Abstract

The utility model discloses a novel closed wound core winding former, which comprises a split winding former and an insulating baffle plate, the split winding former is divided into an inner layer and an outer layer, each layer of split winding former is horizontally divided into two semicircular plates, and the end fitting parts of the inner layer and the outer layer of split winding former are mutually staggered. Annular insulating baffles are arranged on the outer walls of the two ends of the separation winding mold and are also divided into two halves; and the condition that the end parts are not aligned when the winding former is assembled is avoided, so that the deformation of the winding former is avoided, and the performance of the winding is ensured.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary winding equipment for transformer windings, specifically to a novel closed-end core winding mold. Background Technology

[0002] Currently, when winding closed-type three-dimensional wound iron cores, a winding die is placed on the phase column of the iron core. The copper wire is wound onto the winding die to form the winding. The winding die of current closed-type wound iron cores is mainly a cylindrical body divided into two halves. The cylindrical body is closed and placed on the phase column, and then the winding is wound. When the winding die is closed, if the ends of the winding die are not aligned, the winding die will deform, and the winding will also deform accordingly. That is, to wind the same number of turns, the length of copper wire used is shortened, which affects the performance of the transformer. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this invention proposes a novel closed-end winding mold for iron cores, which avoids misalignment at the ends during mold assembly, thereby preventing deformation of the winding mold and ensuring the performance of the winding.

[0004] To achieve the above objectives, the present invention provides a novel closed-end core winding mold, comprising a split winding mold and an insulating baffle. The split winding mold is divided into inner and outer layers, and each layer of the split winding mold is split into two semi-circular plates. The ends of the inner and outer split winding molds are misaligned. Annular insulating baffles are provided on the outer walls of both ends of the split winding mold, and the insulating baffles are also divided into two halves.

[0005] Preferably, the corresponding semicircular plates on the inner and outer split winding molds are fixed to each other, and the ends of the split winding molds are misaligned.

[0006] Preferably, the corresponding semicircular plates on the inner and outer split winding molds are connected by tenon and mortise joints, and the ends of the split winding molds are misaligned.

[0007] Preferably, the end faces of the adjacent semicircular plates are inclined surfaces that fit together.

[0008] Preferably, the two end faces of each semicircular plate are divided into a V-shaped notch and a V-shaped protrusion, and the V-shaped notch and V-shaped protrusion cooperate with each other.

[0009] Preferably, each of the two end faces of the inner layer split winding mold is provided with a matching limiting groove and a limiting block, so as to prevent the two ends of the split winding from misaligning when the two semicircular plates are closed.

[0010] Preferably, the two half insulating baffles are tenon-and-mortise fitted together. The insulating baffles are stuck on the outer wall of the split winding mold and are located at both ends of the split winding mold. One end of the insulating baffle is divided into a fixed plate and a detachable arc plate. An arc groove is opened on the fixed plate for the detachable arc plate to be inserted. There are two detachable arc plates, and the two detachable arc plates are located on the inner and outer sides of the fixed plate, respectively.

[0011] Preferably, a sliding groove is opened on the inner wall of the arc groove, the detachable arc plate is divided into multiple segments and the multiple segments of detachable arc plate are fitted end to end, and a discharge hole is provided at one end of the arc groove. The width of the discharge hole is greater than that of the sliding groove. When the detachable arc plate moves to the discharge hole, the detachable arc plate is disassembled.

[0012] Preferably, an embedding groove is formed on the inner wall of the detachable arc plate for inserting the end of the copper wire, and the end of the copper wire is stuck in the embedding groove. Two adjacent grooves are formed on the outer wall of the detachable arc plate, and the protrusion between the two grooves facilitates the removal of the detachable arc plate from the arc groove.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] First, it avoids misalignment at the ends during winding die assembly, thereby preventing deformation of the winding die and ensuring the performance of the winding.

[0015] Second, when winding the copper foil, the copper wire can be hidden inside the winding mold, so as not to affect the subsequent winding. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is a schematic diagram of the tenon and mortise joint between the two semicircular plates of this utility model.

[0018] Figure 3 This is a schematic diagram showing that the end face of the semicircular plate of this utility model is inclined.

[0019] Figure 4 This is a schematic diagram of the V-shaped end face of this utility model.

[0020] Figure 5 A schematic diagram showing that the end face of this utility model is provided with a limiting groove and a limiting block.

[0021] Figure 6 This is a schematic diagram showing the arc-shaped plate of this utility model divided into multiple sections.

[0022] Figure 7 A schematic diagram showing that the arc-shaped plate of this utility model has an embedded groove.

[0023] Among them, 1. Split winding mold, 2. Semicircular plate, 3. Inclined surface, 4. V-shaped notch, 5. V-shaped protrusion, 6. Limiting groove, 7. Limiting block, 8. Insulating baffle, 9. Fixing plate, 10. Detachable arc plate, 11. Arc groove, 12. Slide groove, 13. Unloading hole, 14. Embedded groove, 15. Groove body. Detailed Implementation

[0024] The present invention will now be further described with reference to the accompanying drawings.

[0025] like Figure 1-7 As shown, a novel closed-loop iron core winding mold includes a split winding mold 1 and an insulating baffle 8. The split winding mold 1 is divided into inner and outer layers. Each layer of the split winding mold 1 is split into two semi-circular plates 2. The ends of the inner and outer split winding mold 1 are misaligned. Annular insulating baffles 8 are provided on the outer walls of both ends of the split winding mold. The insulating baffles 8 are also divided into two halves. During operation, the ends of the two semi-circular plates 2 are first brought together to form a cylinder. Then, the other two semi-circular plates 2 are attached to the outer wall of the cylinder, with their ends also attached. However, the ends of the two sets of semi-circular plates 2 are misaligned. Insulating baffles 8 are fitted at both ends of the cylinder. When there is only one layer of split winding mold 1, during winding, when the semi-circular plates 2 are under force, their ends are prone to misalignment. This reduces the circumference of the split winding mold 1, affecting the length of one turn of the winding, which in turn affects the winding parameters. This application sets up two separate winding molds 1, with the ends of the two separate winding molds 1 attached and misaligned. The winding is directly wound on the outer separate winding mold 1. Since the inner wall of the outer separate winding mold 1 is directly pressed on the inner separate winding mold 1, when the end face of the inner separate winding mold 1 is not misaligned, the end of the outer separate winding mold 1 will not be misaligned. This can effectively avoid the situation of circumference reduction caused by end misalignment during splicing of the separate winding molds 1, thus ensuring the electrical performance parameters of the winding.

[0026] A semi-circular plate on the inner layer split winding mold is fixed to a semi-circular plate on the outer layer split winding mold. This creates two halves of the inner and outer split winding molds, which are then joined together to form the winding mold. The two semi-circular plates 2 can be glued together or integrally injection molded, thus fixing them together and preventing end misalignment of the split winding mold 1. When the inner and outer split winding molds are separated, misalignment occurs at the ends of the inner split winding mold 1 during assembly, and the same misalignment also occurs during assembly of the outer split winding mold. This can cause changes in the winding parameters during winding. However, by fixing the inner and outer semi-circular plates together, the outer wall of the inner semi-circular plate abuts against the inner wall of the outer semi-circular plate during assembly, effectively preventing end misalignment and ensuring the winding parameters are maintained.

[0027] The inner and outer split winding molds 1 are connected by mortise and tenon joints, resulting in misalignment at the ends of the split winding molds 1. During prolonged use, if one of the semicircular plates 2 is damaged, the entire split winding mold 1 needs to be replaced. While the outer semicircular plate wears down due to contact with the winding mechanism, the inner semicircular plate is less prone to damage. Therefore, only the outer semicircular plate needs to be replaced. However, if the inner and outer semicircular plates are fixed together, the inner semicircular plate must be replaced along with the outer one, which is wasteful. In this application, the inner and outer split winding molds are connected by mortise and tenon joints, allowing for the disassembly of the inner and outer semicircular plates. Replacement then only requires installing the new outer semicircular plate onto the new inner semicircular plate, reducing waste and saving costs.

[0028] The end faces of the adjacent semicircular plates 2 are inclined surfaces 3 that fit together. When the end face of the semicircular plate 2 is flat, when the split winding mold is squeezed, the semicircular plate 2 deforms. As a result, the end faces of the inner semicircular plates 2 may misalign with each other, and the end of the corresponding outer semicircular plate will also misalign. In this application, the end face of the semicircular plate 2 is inclined. When splicing, the inner semicircular plate slides along the inner wall of the outer semicircular plate. When the inclined surfaces of the two inner semicircular plates fit together, the splicing is completed. The inclined surface of the end face of the inner semicircular plate and the inner wall of the outer semicircular plate form a groove. The inclined surface of the other inner semicircular plate extends into the groove to complete the splicing. When squeezed, the inclined surface of the end face of the semicircular plate is stuck in the groove, which can prevent the end of the inner semicircular plate from misaligning.

[0029] Each semicircular plate 2 has two end faces divided into V-shaped notches 4 and V-shaped protrusions 5. The V-shaped notches 4 and V-shaped protrusions 5 cooperate with each other, which also facilitates the splicing of the split winding mold 1. At the same time, it can effectively prevent the end of the semicircular plate from being misaligned when under pressure.

[0030] Each semicircular plate 2 of the inner layer split winding mold 1 has a matching limiting groove 6 and a limiting block 7 on its two end faces. When the two semicircular plates 2 are closed, the ends of the split winding are prevented from being up and down. When the two semicircular plates 2 are spliced ​​together, the limiting block 7 on one semicircular plate 2 is inserted into the limiting groove 6 on the other semicircular plate 2. This can prevent the two semicircular plates 2 from being misaligned after splicing.

[0031] The two halves of the insulating baffle 8 are joined by mortise and tenon joints. One half of the insulating baffle 8 is fixed with a male tenon by integral molding, and the other half of the insulating baffle 8 has a female tenon for the male tenon to be inserted. This makes the two insulating baffles 8 into a ring-shaped insulating baffle 8. The insulating baffle 8 is fitted on the outer wall of the outer split winding mold 1 and is located at both ends of the split winding mold 1. One end of the insulating baffle 8 is divided into a fixed plate 9 and a detachable arc plate 10. The fixed plate 9 has two arc grooves 11 for the detachable arc plate 10 to be inserted. There are two detachable arc plates 10, and the two detachable arc plates 10 are located on the inner and outer sides of the fixed plate 9, respectively. The radius of the inner detachable arc plate is smaller than the radius of the outer detachable arc plate. In this way, the end of the copper wire is inserted into the arc groove 11.

[0032] A sliding groove 12 is opened on the inner wall of the arc groove 11. The detachable arc plate 10 is divided into multiple segments and the ends of the multiple detachable arc plates 10 are attached together. A discharge hole 13 is opened at one end of the arc groove 11. The width of the discharge hole 13 is greater than the width of the sliding groove 12. When the detachable arc plate 10 moves to the discharge hole 13, the detachable arc plate 10 is disassembled. The length of the arc groove 11 is adjusted by inserting different numbers of detachable arc plates 10. In this way, the length of the arc groove 11 is adjusted according to the length of the copper wire end.

[0033] An embedding groove 14 is provided on the inner wall of the detachable arc plate 10 for inserting the end of the copper wire. The end of the copper wire is stuck in the embedding groove 14. Two adjacent grooves 15 are provided on the outer wall of the detachable arc plate 10. The protrusion between the two grooves 15 facilitates the removal of the detachable arc plate 10 from the arc groove 11, thus facilitating the disassembly of the detachable arc plate 10.

Claims

1. A novel closed-loop winding die for iron cores, comprising a split winding die and an insulating baffle, characterized in that, The split winding mold is divided into inner and outer layers. Each layer of the split winding mold is split into two semi-circular plates. The ends of the inner and outer split winding molds are misaligned. Annular insulating baffles are set on the outer walls of both ends of the split winding mold. The insulating baffles are also divided into two halves.

2. The novel closed-loop core winding die according to claim 1, characterized in that, The corresponding semicircular plates on the inner and outer layers of the split winding mold are fixed to each other, and the ends of the split winding mold are misaligned.

3. A novel closed-loop core winding die according to claim 1 or 2, characterized in that, The corresponding semicircular plates on the inner and outer layers of the split winding mold are connected by mortise and tenon joints, and the ends of the split winding mold are misaligned.

4. A novel closed-loop core winding die according to claim 1 or 2, characterized in that, The end faces of the adjacent semicircular plates are inclined surfaces that fit together.

5. A novel closed-loop core winding die according to claim 1 or 2, characterized in that, Each semicircular plate has two end faces divided into a V-shaped notch and a V-shaped protrusion, which work together.

6. A novel closed-loop core winding die according to claim 1 or 2, characterized in that, Each semicircular plate of the inner layer split winding mold is provided with matching limiting grooves and limiting blocks on both end faces to prevent misalignment of the two ends of the split winding when the two semicircular plates are closed.

7. A novel closed-loop core winding die according to claim 1, characterized in that, The two insulating baffles are joined by tenon and mortise. The insulating baffles are stuck on the outer wall of the split winding mold and are located at both ends of the split winding mold. One end of the insulating baffle is divided into a fixed plate and a detachable arc plate. An arc groove is opened on the fixed plate for the detachable arc plate to be inserted. There are two detachable arc plates, and the two detachable arc plates are located on the inner and outer sides of the fixed plate, respectively.

8. A novel closed-loop core winding die according to claim 7, characterized in that, A sliding groove is opened on the inner wall of the arc-shaped groove. The detachable arc plate is divided into multiple segments and the ends of the multiple detachable arc plates are attached together. A discharge hole is provided at one end of the arc-shaped groove. The width of the discharge hole is greater than that of the sliding groove. When the detachable arc plate moves to the discharge hole, the detachable arc plate is disassembled.

9. A novel closed-loop core winding die according to claim 8, characterized in that, An embedding groove is formed on the inner wall of the detachable arc plate for inserting the end of the copper wire. The end of the copper wire is stuck in the embedding groove. Two adjacent grooves are formed on the outer wall of the detachable arc plate. The protrusion between the two grooves makes it easy to remove the detachable arc plate from the arc groove.

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