A winding core

Abstract

The present invention discloses a winding mold core, comprising an inner mold and a core mold; the inner mold comprises a main module for winding a strip, the main module is annular and a supporting block for supporting a magnetic ring is arranged on the outer peripheral side of the main module; the core mold is sleeved in the main module and fits the inner peripheral side of the main module, and a positioning structure for fixing the mutual position is arranged between the core mold and the main module; along the axial direction of the main module, at least one end face of the core mold is provided with a winding installation block for connecting to a winding machine. The present invention has the advantages of simple structure, convenient assembly, and can effectively improve the undesirable situation that the magnetic ring is loose and warped after demoulding due to the winding tension after the winding of a large magnetic core is completed.

Description

Technical Field

[0001] The invention relates to the field of magnetic ring processing, in particular to a winding mold core. Background Art

[0002] At present, large amorphous strip magnetic rings or nanocrystalline strip magnetic rings are all wound by flat winding machines. After the amorphous strip or nanocrystalline strip is wound by the flat winding machine, the wound magnetic ring needs to be taken out of the flat winding machine mold and sent to the heat treatment process for processing. However, considering the problem of product tension shrinkage, the inner diameter of the existing heat treatment mold is generally smaller than the inner diameter of the magnetic ring, which causes the magnetic core to curl and warp easily after winding and demolding. This phenomenon is particularly serious for some products made of thin strips. The inner circle size of the magnetic ring after heat treatment is often out of specification and cannot be put into the protective box. The magnetic ring needs to be manually stripped, which greatly increases labor costs and reduces product production efficiency and product qualification rate. Summary of the invention

[0003] The object of the present invention is to provide a winding core which can effectively improve the undesirable situation that the magnetic rings after demoulding may loosen and warp inwards due to the winding tension after the winding of a large magnetic core is completed.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A winding mold core, in particular, comprises an inner mold and a core mold; the inner mold comprises a main module for winding a strip, the main module is an annular structure and a supporting block for supporting a magnetic ring is arranged on the outer peripheral side of the main module; the core mold is inserted into the main module and fits the inner peripheral side of the main module, and a positioning structure for fixing the relative positions of the core mold and the main module is arranged between the core mold and the main module; along the axial direction of the main module, a winding mounting block for connecting to a winding machine is arranged on at least one end face of the core mold.

[0006] The principle of the present invention is as follows:

[0007] The winding mold core consists of two parts, the outer side is the inner mold, and the inner side is the core mold. After the two parts are assembled together, they can be installed on the winding machine through the winding mounting block to realize winding, so that the strip is wound on the main module of the inner mold to form a magnetic ring with the inner diameter consistent with the outer diameter of the main module. After winding, the inner mold and the magnetic ring are taken out together and heat treated. Since the magnetic ring is attached to the main module, the inner mold can ensure that the inner circle specifications of the magnetic ring after heat treatment remain consistent.

[0008] In one embodiment, the support block is provided with a plurality of exhaust holes to dissipate heat from the magnetic ring, and the exhaust holes are arranged along the circumference of the support block.

[0009] In one embodiment, the positioning structure is designed as follows: a protrusion protruding from the inner circumference of the main module is provided in the main module, and a groove corresponding to the position of the protrusion is provided on the core mold; when the core mold is inserted into the main module, the protrusion is embedded in the groove to fix the position of the inner mold and the core mold.

[0010] In one embodiment, the core mold includes a main core block with a columnar structure, and at least one end surface of the main core block extends outward to form a winding installation block for mounting the core mold. The peripheral side of the main core block extends outward and toward the end surface where the winding installation block is provided to form a flange, and the flange is located on the same horizontal line as the winding installation block.

[0011] The present invention has the advantages of simple structure, convenient assembly, and can effectively improve the undesirable situation that the magnetic ring is loose and warped after demoulding due to the winding tension after the large magnetic core is wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of an inner mold in an embodiment of the present invention;

[0013] Figure 2 Schematic diagram of a core mold in an embodiment of the present invention;

[0014] Explanation of the reference numerals: 1-inner mold; 2-core mold; 3-main module; 4-support block; 5-exhaust hole; 6-bump; 7-main core block; 8-winding mounting block; 9-through hole; 10-flange; 11-groove. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] As shown in the figure, the winding mold core includes an inner mold 1 and a core mold 2, wherein:

[0017] The inner mold 1 comprises a main module 3 for winding the strip, the main module 3 is annular in structure and a supporting block 4 for supporting the magnetic ring is arranged on the outer circumference of the main module 3, and a plurality of exhaust holes 5 arranged along the circumference of the supporting block 4 are arranged on the supporting block 4 to dissipate heat of the magnetic ring; a convex block 6 protruding from the inner circumference of the main module 3 is arranged inside the main module 3, and the convex block 6 is arranged along the axial direction of the main module 3;

[0018] The core mold 2 includes a main core block 7 with a columnar structure, and both end surfaces of the main core block 7 extend outward to form a winding mounting block 8. The winding mounting block 8 has a columnar structure, and a through hole 9 arranged longitudinally along the winding mounting hole is provided in the winding mounting block 8; the peripheral side of the main core block 7 extends outward and toward the end surface where the winding mounting block 8 is provided to form a flange 10, and the flange 10 and the winding mounting block 8 are located on the same horizontal line; the core mold 2 is provided with a groove 11 corresponding to the position of the protrusion 6, and when the core mold 2 is installed in the main module 3, the protrusion 6 is embedded in the groove 11 to achieve positioning.

[0019] The winding mold core comprises two parts, the outer side is the inner mold 1, and the inner side is the core mold 2. After the two parts are assembled together, they can be installed on the winding machine through the winding mounting block 8 to realize winding, so that the strip is wound on the main module 3 of the inner mold 1 to form a magnetic ring with an inner diameter consistent with the outer diameter of the main module 3. After the winding is completed, the inner mold 1 and the magnetic ring are taken out together and heat treated. Since the magnetic ring is attached to the main module 3, the inner mold 1 can ensure that the inner circle specifications of the magnetic ring after heat treatment remain consistent.

[0020] This specification lists only the preferred embodiments of the present invention. All equivalent technical changes made under the working principle and concept of the present invention are deemed to be within the protection scope of the present invention.

Claims

1. A winding core, characterized by: It comprises an inner mould and a core mould; the inner mould comprises a main module for winding the strip, the main module is annular in structure and a supporting block for supporting the magnetic ring is arranged on the outer circumference of the main module; the core mould is sleeved in the main module and fits the inner circumference of the main module, and a positioning structure for fixing the relative positions of the core mould and the main module is arranged; along the axial direction of the main module, a winding mounting block for connecting with a winding machine is arranged on at least one end face of the core mould; the positioning structure is designed as follows: a convex block protruding from the inner circumference of the main module is arranged in the main module, and a groove corresponding to the position of the convex block is arranged on the core mould; when the core mould is sleeved in the main module, the convex block is embedded in the groove; the core mould comprises a main core block with a columnar structure, at least one end face of the main core block extends outward to form a winding mounting block, the circumference of the main core block extends outward and toward the end face provided with the winding mounting block to form a flange, and the flange is located on the same horizontal line as the winding mounting block.

2. The winding core according to claim 1, characterized in that: The supporting block is provided with a plurality of exhaust holes, and the exhaust holes are arranged along the circumference of the supporting block.

3. The winding core according to claim 1, characterized in that: Winding mounting blocks are arranged on both end surfaces of the core mold.

4. The winding core according to claim 1 or 3, characterized in that: The winding installation block is a columnar structure, and a through hole arranged longitudinally along the winding installation hole is arranged in the winding installation block.

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