Dual-purpose transformer coil winding mold for sleeving and winding equipment and embracing and winding equipment

Abstract

The utility model discloses a dual-purpose transformer coil winding mold for sleeve winding and embracing equipment, and belongs to the technical field of coil winding. The dual-purpose transformer coil winding mold for the sleeving winding device and the embracing winding device comprises two half mold assemblies which can be spliced into a complete winding mold, the splicing face of the two half mold assemblies is an inclined face, and clamping protruding parts used for clamping the embracing winding device are fixed to the large-size ends of the two half mold assemblies respectively. And a sleeving hole used for being mounted on a rotating shaft of sleeving and winding equipment is formed in the middle of the clamping convex part. According to the winding die, the clamping convex parts used for clamping the winding equipment are fixed at the large-size ends of the two half die assemblies respectively, and the sleeving holes used for being installed on the rotating shaft of the sleeving and winding equipment are formed in the middles of the clamping convex parts, so that the winding die can be installed on the sleeving and winding equipment for use and can also be installed on the winding equipment for use; and the coil sleeving and winding process is realized on the basis of the original winding equipment, and the production period of the transformer is shortened.

Description

Technical Field

[0001] The utility model relates to a transformer coil winding die, in particular to a transformer coil winding die which can be used as both a sleeve winding device and a wrapping winding device. Background Art

[0002] The coil winding is one of the main components of the transformer and is the core of the transformer's power conversion and transmission and distribution. To ensure the long-term safe and reliable operation of the transformer, the transformer winding must meet basic requirements in terms of electrical strength, thermal strength, and mechanical strength.

[0003] At present, there are two main methods for winding transformer coils: sleeve winding and wrapping winding:

[0004] Sleeve winding involves using a winding mold to wind the coil. A winding mold, whose shape and size match the core, is installed on the winding machine. The coil is wound on the winding mold, and after demolding, the coil winding is obtained. The coil winding is then sheathed and assembled with the core. The advantage of the sheath winding process is that the coil winding and the core can be produced simultaneously, resulting in a shorter production cycle.

[0005] Hold winding involves clamping a pre-fabricated core onto a hold winding machine, then winding the coil directly onto the core. Compared to sleeve winding, this process creates a tighter fit between the coil and the core, resulting in better electrical performance. However, its disadvantage is that the core must be fabricated before coil winding can begin, and the core production process takes longer, leading to a longer overall production cycle.

[0006] Based on the characteristics of coil sheathing and coil wrapping processes, as well as the production schedules of manufacturers, the sheathing and coil wrapping processes are typically used together. When production schedules are tight, the sheathing process is generally preferred to improve production efficiency; when production schedules are ample, the coil wrapping process is generally preferred to improve the electrical performance and quality of the winding. The sheathing process uses a winding die that is threaded onto the rotating shaft (typically a square shaft) of the sheathing equipment for winding, while the coil wrapping process uses a chuck to clamp the core for winding. Therefore, the winding die used in existing sheathing processes cannot be installed on coil wrapping equipment to perform the sheathing process. When production schedules are tight, coil wrapping equipment often sits idle, resulting in low equipment utilization. Therefore, designing a winding die that can be used on both sheathing and coil wrapping equipment is crucial for shortening transformer production cycles. Summary of the Invention

[0007] 1. Technical problems to be solved by the utility model

[0008] The purpose of the utility model is to provide a transformer coil winding mold that can be used for both sleeve winding and holding winding equipment, so as to realize the coil sleeve winding process on the holding winding equipment. By adopting the technical solution of the utility model, clamping protrusions for clamping the winding equipment are respectively fixed on the large-size ends of the two half-mold components, and the middle part of the clamping protrusion has a fitting hole for being installed on the rotating shaft of the sleeve winding equipment, so that the winding mold can be installed on the sleeve winding equipment or the holding winding equipment for use, realizing the coil sleeve winding process on the original holding winding equipment, and shortening the production cycle of the transformer.

[0009] 2. Technical solution

[0010] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is:

[0011] The utility model discloses a transformer coil winding mold for both sleeve winding and hugging winding equipment, comprising two half-mold assemblies that can be assembled into a complete winding mold, the assembly surfaces of the two half-mold assemblies being inclined surfaces, the large-size ends of the two half-mold assemblies being respectively fixed with clamping protrusions for clamping the winding equipment, and the middle parts of the clamping protrusions being provided with a fitting hole for being mounted on the rotating shaft of the sleeve winding equipment.

[0012] Furthermore, a portion of the clamping protrusion is fixedly connected to the large-size end of the corresponding half-mold assembly, and the other portion protrudes from the joint surface as a limiting portion of the small-size end of the other half-mold assembly.

[0013] Furthermore, the shape of the clamping protrusion matches the chuck mechanism of the wrapping device.

[0014] Furthermore, a positioning connection hole is provided between the limiting portion of the clamping protrusion and the small-sized end of the corresponding half-mold assembly.

[0015] Furthermore, the height H of the clamping protrusion is ≥30 mm, and the shape of the sleeve hole is adapted to the shape of the rotating shaft of the sleeve winding device.

[0016] Furthermore, the inclined angle α of the joint surface of the half mold assembly is ≥2°.

[0017] Furthermore, the half-mold assembly includes a large end plate, a small end plate and a number of support rods. The outer periphery of the large end plate and the small end plate is provided with a number of relatively positioned mounting grooves. The two ends of the support rods are respectively installed in the corresponding mounting grooves of the large end plate and the small end plate and welded and fixed. The clamping protrusion is fixed to the large end plate of the half-mold assembly by welding or bolts.

[0018] Furthermore, the support rod is made of a square tube, a round tube or a special-shaped tube, and the shape of the mounting groove is adapted to the cross-sectional shape of the support rod.

[0019] Furthermore, the clamping protrusion has a clamping end plate, the fitting hole is arranged on the clamping end plate, and the splicing ends of the large end plate and the small end plate are also provided with a notch. The notch on the large end plate of one half-mold assembly and the notch on the small end plate of the other half-mold assembly are spliced ​​together to form a through hole corresponding to the position of the above-mentioned fitting hole.

[0020] Furthermore, the half-mold assembly also includes an intermediate support plate located between the large end plate and the small end plate for supporting the support rod, and the intermediate support plate is welded to the support rod.

[0021] 3. Beneficial effects

[0022] Compared with the existing known technologies, the technical solution provided by the present invention has the following beneficial effects:

[0023] (1) The utility model provides a transformer coil winding mold for both sheathing and wrapping devices, comprising two half-mold assemblies that can be assembled into a complete winding mold. The large-sized ends of the two half-mold assemblies are respectively fixed with clamping protrusions for clamping the wrapping device. The middle part of the clamping protrusion has a fitting hole for mounting on the rotating shaft of the sheathing device, so that the winding mold can be mounted on the sheathing device or the wrapping device for use, realizing the coil sheathing process on the original wrapping device, thereby shortening the production cycle of the transformer;

[0024] (2) The utility model relates to a transformer coil winding die that can be used as both a sleeve winding and a wrapping winding device. A portion of the clamping protrusion is fixedly connected to the large-size end of the corresponding half-die assembly, and the other portion of the protruding joint surface serves as a stopper for the small-size end of the other half-die assembly. When the two half-die assemblies are assembled, the stopper can be used to achieve positioning, making the winding die assembly more accurate and convenient.

[0025] (3) The utility model relates to a transformer coil winding die that can be used for both sleeve winding and wrapping winding equipment. The shape of the clamping protrusion matches the chuck mechanism of the wrapping winding equipment, and the height H of the clamping protrusion is ≥30 mm, which facilitates the chuck structure of the wrapping winding equipment to clamp it, and the clamping is more firm and reliable. The shape of the sleeve hole matches the shape of the rotating shaft of the sleeve winding equipment, and can cooperate with the rotating shaft of the sleeve winding equipment, so that the rotating shaft of the sleeve winding equipment can stably drive the winding die to rotate and wind.

[0026] (4) The utility model is a transformer coil winding die that can be used as both a sleeve winding and a wrapping winding device. A positioning connection hole is provided between the limiting portion of the clamping protrusion and the small-sized end of the corresponding half-die assembly. The two half-die assemblies can be assembled and fixed using positioning pins or bolts, which facilitates the fixation and use of the winding die.

[0027] (5) The utility model is a transformer coil winding mold that can be used as both a sleeve winding and a wrapping winding device. The inclined angle α of the joint surface of the half mold assembly is ≥2°, making the coil demoulding more convenient;

[0028] (6) The utility model is a transformer coil winding die that can be used as both a sleeve winding and a wrapping winding device. Its half-die assembly includes a large end plate, a small end plate and a plurality of support rods. The outer peripheries of the large end plate and the small end plate are provided with a plurality of mounting grooves in opposite positions. The two ends of the support rods are respectively installed in the corresponding mounting grooves of the large end plate and the small end plate and fixed by welding. The clamping protrusion is fixed to the large end plate of the half-die assembly by welding or bolts to form a cage-type structure of the half-die assembly. It has the advantages of easy production and light weight.

[0029] (7) The utility model relates to a transformer coil winding die that can be used for both sleeve winding and holding winding equipment. Its clamping protrusion has a clamping end plate, and the sleeve hole is provided on the clamping end plate. The splicing end of the large end plate and the small end plate is also provided with a notch. The notch on the large end plate of one half mold assembly and the notch on the small end plate of the other half mold assembly are combined to form a through hole corresponding to the position of the sleeve hole, so that the sleeve holes at both ends of the winding die can pass through from front to back, which is convenient for installation on the rotating shaft of the sleeve winding equipment.

[0030] (8) The utility model provides a transformer coil winding mold that can be used as both a sleeve winding and a wrapping winding device. Its half-mold assembly also includes an intermediate support plate located between the large end plate and the small end plate for supporting the support rod. The intermediate support plate is welded to the support rod, which further improves the structural strength of the winding mold, effectively prevents the support rod from being deformed, and ensures the dimensional accuracy of the coil winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of a transformer coil winding die that is a dual-purpose sleeve winding and hugging winding device of the present invention;

[0032] Figure 2 This is a left view of a transformer coil winding die that is a dual-purpose sleeve winding and hugging winding device of the utility model;

[0033] Figure 3 This is a schematic diagram of the disassembled structure of a transformer coil winding mold that is a dual-purpose sleeve winding and hugging winding device of the utility model.

[0034] Explanation of the numbers in the schematic diagram:

[0035] 1. Half mold assembly; 1-1. Large end plate; 1-2. Small end plate; 1-3. Middle support plate; 1-4. Support rod; 1-5. Through hole; 1-6. Mounting slot; 2. Clamping protrusion; 2-1. Clamping end plate; 2-2. Set hole. DETAILED DESCRIPTION

[0036] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0037] [Example]

[0038] Combine Figure 1 、 Figure 2 and Figure 3 As shown in the figure, a transformer coil winding mold for both sleeve winding and holding winding equipment in this embodiment includes two half-mold components 1 that can be assembled into a complete winding mold. The assembly surface of the two half-mold components 1 is an inclined surface to facilitate coil demoulding. The main structure of the winding mold is similar to the original sleeve winding mold, and its overall cross-sectional shape is similar to the cross-sectional shape of the matching iron core, for example Figure 2 The roughly elliptical shape shown is different from the sleeve winding mold in that the large ends of the two half-mold assemblies 1 are each fixed with a clamping protrusion 2 for clamping the winding equipment. The clamping protrusion 2 can be clamped by the chuck structure of the winding equipment, so that the winding equipment drives the winding mold to rotate, completing the coil sleeve winding process on the winding equipment. In addition, the center of the clamping protrusion 2 has a mounting hole 2-2 for mounting on the rotating shaft of the sleeve winding equipment. The winding mold can be mounted on the rotating shaft of the sleeve winding equipment through the mounting hole 2-2 and can still cooperate with the sleeve winding equipment to perform coil winding, realizing the dual use of sleeve winding and sleeve winding equipment. The use of the sleeve winding equipment increases production capacity and shortens the production cycle of the transformer.

[0039] Reference Figure 3 As shown, in this embodiment, a portion of the clamping protrusion 2 is fixedly connected to the large-sized end of the corresponding half-mold assembly 1, and the other portion protrudes from the joint surface as a limiter for the small-sized end of the other half-mold assembly 1. The clamping protrusion 2 and the large-sized end of the half-mold assembly 1 can be fixed by welding or bolts; when the two half-mold assemblies 1 are assembled, the limiter of the clamping protrusion 2 can be against the small-sized end of the other half-mold assembly 1 to achieve the positioning of the assembly position, making the winding mold assembly more accurate and convenient. Figure 2 As shown, the shape of the clamping protrusion 2 in this embodiment matches the chuck mechanism of the winding device, for example, it can be rectangular. The height H of the clamping protrusion 2 is ≥ 30 mm, for example, 40 mm to 60 mm, preferably 50 mm, which facilitates clamping by the chuck mechanism of the winding device, and the clamping is more secure and reliable. Furthermore, the shape of the sleeve hole 2-2 is compatible with the shape of the rotating shaft of the sleeve winding device, for example, it is a square hole, which can cooperate with the rotating shaft of the sleeve winding device, so that the rotating shaft of the sleeve winding device can stably drive the winding mold to rotate and wind the wire.

[0040] In addition, in this embodiment, there is also a positioning connection hole (not shown in the figure) between the limiting portion of the clamping convex portion 2 and the small-sized end of the corresponding half-mold component 1. When the two half-mold components 1 are assembled, the position of the limiting portion of the clamping convex portion 2 corresponds to the positioning connection hole on the small-sized end of the corresponding half-mold component 1. The positioning connection hole can be a pin hole or a threaded hole, and the two half-mold components can be assembled and fixed by using a positioning pin or a bolt, which is convenient for the fixation and use of the winding mold.

[0041] Specifically, in this embodiment, the inclination angle α of the mating surface of the above-mentioned half-mold component 1 is α≥2°, preferably 2°-4°. When the coil is demolded, since the coil tightly wraps around the winding mold, it is very difficult to directly disassemble it. Through the design of the inclination angle of the mating surface, an impact force can be applied to the small-sized end of the half-mold component 1 along the axis Z direction of the winding mold, so that the two half-mold components 1 move away from each other. Only a very small axial movement amount can realize the relative movement of the two half-mold components 1 in the radial direction, and then loosen from the coil, which is convenient for disassembling the wound coil from the winding mold. In addition, by using a small inclination angle of 2°-4°, the axial component of the wrapping pressure of the coil on the two half-mold components 1 can be reduced, so that the two half-mold components 1 are not easily loosened during use, and the coil winding is more stable.

[0042] As shown in Figure 1 、 Figure 2 and Figure 3 shown, a transformer coil winding mold that can be used for both sleeve winding and embracing winding in this embodiment, its half-mold component 1 includes a large-end end plate 1-1, a small-end end plate 1-2 and several support rods 1-4. The large-end end plate 1-1 and the small-end end plate 1-2 can be spliced to form the cross-sectional shape of a complete winding mold. A number of relatively-positioned mounting grooves 1-6 are provided on the outer perimeters of the large-end end plate 1-1 and the small-end end plate 1-2. The two ends of the support rod 1-4 are respectively installed in the corresponding mounting grooves 1-6 of the large-end end plate 1-1 and the small-end end plate 1-2 and welded and fixed to form a cage-type half-mold component 1, which has the advantages of being easy to manufacture and light in weight. As a preferred implementation manner, the support rod 1-4 can be made of a square tube, a round tube or a special-shaped tube, and the shape of the mounting groove 1-6 is adapted to the cross-sectional shape of the support rod 1-4. For example Figure 2 shown, the notch shape of the mounting groove 1-6 is "凵"-shaped, and the support rod 1-4 is a square tube. The "凵"-shaped mounting groove 1-6 can facilitate the positioning of the square support rod 1-4 and is convenient for the connection of the support rod 1-4 with the large-end end plate 1-1 and the small-end end plate 1-2.

[0043] The above-mentioned clamping protrusion 2 and the large end plate 1-1 of the half mold assembly 1 can be fixed by welding or bolts. The clamping protrusion 2 can be a welded part made of plate materials, with a clamping end plate 2-1 at the end of the clamping protrusion 2, and a set hole 2-2 is provided on the clamping end plate 2-1. The splicing end of the large end plate 1-1 and the small end plate 1-2 is also provided with a notch. The notch on the large end plate 1-1 of one half mold assembly 1 and the notch on the small end plate 1-2 of the other half mold assembly 1 are spliced ​​to form a through hole 1-5 corresponding to the position of the above-mentioned set hole 2-2. Figure 2 As shown in the figure, the dotted rectangular box is the through hole 1-5, which is surrounded by the notches on the large end plate 1-1 and the small end plate 1-2. The size of the through hole 1-5 can be larger than the size of the set hole 2-2, so that the set holes at both ends of the winding mold can pass through from front to back. The size of the set hole 2-2 is adapted to the cross-sectional size of the shaft of the winding device, which is convenient for installation on the shaft of the winding device.

[0044] like Figure 1 and Figure 3 As shown, the mold half assembly 1 further includes an intermediate support plate 1-3 positioned between the large end plate 1-1 and the small end plate 1-2, for supporting the struts 1-4. The intermediate support plates 1-3 are welded to the struts 1-4. The number of intermediate support plates 1-3 can be determined based on the transverse span of the struts 1-4. For larger transverse spans, multiple intermediate support plates 1-3 can be spaced apart. The intermediate support plates 1-3 further enhance the structural strength of the winding mold, effectively preventing deformation of the struts and ensuring the dimensional accuracy of the coil windings.

[0045] This embodiment of a transformer coil winding mold, which can be used for both sleeve and wrap winding, has two identical mold halves (1). During use, the two mold halves (1) are assembled to form a complete winding mold. When used with a sleeve winding device, the winding mold is mounted on the rotating shaft of the sleeve winding device via the mounting holes (2-2) and the coil is wound. When used with a wrap winding device, the clamping protrusions (2) at each end of the winding mold are clamped using the wrap winding device's chuck mechanism, and the coil is wound on the winding mold using the wrap winding device. After the coil is wound, the two mold halves (1) are disassembled to remove the coil from the mold and assemble it with the prepared iron core.

[0046] The utility model discloses a transformer coil winding mold which can be used for both sleeve winding and holding winding equipment. A clamping protrusion for clamping the holding winding equipment is fixed on the large-size ends of the two half-mold components respectively. The middle part of the clamping protrusion has a fitting hole for mounting on the rotating shaft of the sleeve winding equipment, so that the winding mold can be mounted on the sleeve winding equipment or on the holding winding equipment for use. The coil sleeve winding process is realized on the original holding winding equipment, the production cycle of the transformer is shortened, and the production efficiency is improved.

[0047] The above schematically describes the present invention and its embodiments, which is not intended to be limiting. The accompanying drawings illustrate only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the spirit of the present invention, uninventively designs structures and embodiments similar to this technical solution, they shall fall within the scope of protection of the present invention.

Claims

1. A transformer coil winding die for both sleeve winding and wrapping winding, comprising two half-die assemblies (1) that can be assembled into a complete winding die, wherein the assembled surfaces of the two half-die assemblies (1) are inclined surfaces, and characterized in that: The large-sized ends of the two half-mold assemblies (1) are respectively fixed with clamping protrusions (2) for clamping the wrapping device, and the middle part of the clamping protrusion (2) has a sleeve hole (2-2) for mounting on the rotating shaft of the wrapping device.

2. The transformer coil winding mold for both sleeve winding and wrapping winding according to claim 1 is characterized in that: A portion of the clamping protrusion (2) is fixedly connected to the large-size end of the corresponding half-mold assembly (1), and the other portion protrudes from the joint surface to serve as a limiting portion for the small-size end of the other half-mold assembly (1).

3. The transformer coil winding mold for sleeve winding and wrapping winding according to claim 2 is characterized in that: The shape of the clamping protrusion (2) matches the chuck mechanism of the wrapping device.

4. The transformer coil winding mold for sleeve winding and wrapping winding according to claim 2 is characterized in that: A positioning connection hole is also provided between the limiting portion of the clamping protrusion (2) and the small-sized end of the corresponding half-mold assembly (1).

5. The transformer coil winding mold for sleeve winding and wrapping winding according to claim 2 is characterized in that: The height H of the clamping protrusion (2) is greater than or equal to 30 mm, and the shape of the sleeve hole (2-2) is compatible with the shape of the rotating shaft of the sleeve winding device.

6. The transformer coil winding mold for sleeve winding and wrapping winding according to claim 1 is characterized in that: The inclined angle α of the joint surface of the half-mold assembly (1) is ≥2°.

7. The transformer coil winding die for both sleeve winding and wrapping winding according to any one of claims 1 to 6, characterized in that: The half-mold assembly (1) comprises a large end plate (1-1), a small end plate (1-2) and a plurality of support rods (1-4); the outer peripheries of the large end plate (1-1) and the small end plate (1-2) are provided with a plurality of mounting grooves (1-6) positioned opposite to each other; the two ends of the support rods (1-4) are respectively mounted in the corresponding mounting grooves (1-6) of the large end plate (1-1) and the small end plate (1-2) and fixed by welding; the clamping protrusion (2) is fixed to the large end plate (1-1) of the half-mold assembly (1) by welding or bolts.

8. The transformer coil winding die for sleeve winding and wrapping winding according to claim 7, characterized in that: The support rod (1-4) is made of a square tube, a round tube or a special-shaped tube, and the shape of the installation groove (1-6) is adapted to the cross-sectional shape of the support rod (1-4).

9. The transformer coil winding mold for sleeve winding and wrapping winding according to claim 7, characterized in that: The clamping protrusion (2) has a clamping end plate (2-1), the set hole (2-2) is provided on the clamping end plate (2-1), and the spliced ​​ends of the large end plate (1-1) and the small end plate (1-2) are further provided with a notch, and the notch on the large end plate (1-1) of one half mold assembly (1) and the notch on the small end plate (1-2) of the other half mold assembly (1) are spliced ​​to form a through hole (1-5) corresponding to the position of the set hole (2-2).

10. The transformer coil winding die for sleeve winding and wrapping winding according to claim 7, characterized in that: The half-mold assembly (1) further comprises an intermediate support plate (1-3) located between the large end plate (1-1) and the small end plate (1-2) for supporting the support rod (1-4); the intermediate support plate (1-3) is welded to the support rod (1-4).

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