CN103066774A

CN103066774A - Coil forming method and device

Info

Publication number: CN103066774A
Application number: CN2012105446166A
Authority: CN
Inventors: 张翠艳; 邓日江; 朱利湘; 吴顺海
Original assignee: CSR Zhuzhou Electric Co Ltd
Current assignee: CRRC Zhuzhou Electric Co Ltd
Priority date: 2012-12-14
Filing date: 2012-12-14
Publication date: 2013-04-24

Abstract

The invention discloses a coil forming method. When wires are wound on a coil inner frame mould, an idler wheel is also used for squeezing the wires towards a rotary center of the coil inner frame mould. By adopting the idler wheel to squeeze the wires which are in winding on the coil inner frame mould, the upper layer of coils and the lower layer of coils are tightly attached, and merely any gap is reserved, and therefore coil forming difficulty is lowered. At the same time, tension force which acts on the wires can be decreased, and damage from the wires to an interturn insulation layer is reduced. The invention further comprises a coil forming device.

Description

A kind of method of coil molding and device thereof

Technical field

The present invention relates to the motor manufacturing technology field, more particularly, relate to a kind of method of coil molding, also relate to a kind of device of coil molding.

Background technology

Stator coil is one of DC motor critical component, and stator coil is normally flat around forming.For the DC motor little for volume, that electric current is large, more than coiling 10 circles, the wire gauge of coil is very large at least for each coil, and simultaneously, the quality of wire (being generally copper busbar) is harder, and resilience is larger.These factors cause the stator coil difficult forming, and as not docile, gapped between the line layer, the internal and external frames size is difficult to control etc., also cause wire damaged.If when the coiling stator coil, do not address the above problem, just may cause the electric machine temperature rise faults such as impaired, turn-to-turn short circuit that exceed standard, insulate.

For above-mentioned situation, the method for coiling stator coil is behind annealing conducting wire, to utilize the flat winding forming of curling machine, as shown in Figure 1 at present.At first, the end with wire 2 is fixed on the coil inside casing mould 1; Then, on one side revolving coil inside casing mould 1, on one side to opposite direction horizontal drawing wire 2; After the coiling of finishing a circle coil, turn-to-turn insulation layer 4 is set, next circle coil of coiling more afterwards is until finish coiling.

But, when making stator coil by above-mentioned winding method, in order to overcome the defective such as above-mentioned difficult forming, to opposite direction horizontal drawing wire 2 time, need to apply larger pulling force.Because the contact area less of wire 2 and turn-to-turn insulation layer 4, the pressure that wire 2 is applied on the turn-to-turn insulation layer 4 is very large, just pulls turn-to-turn insulation layer 4 easily, has increased the possibility that Inter-turn Short Circuit Phenomenon occurs.

By the above, how a kind of method of coil molding is provided, when reducing the coil molding difficulty, reduce the injury to the turn-to-turn insulation layer, become the technical problem that those skilled in the art need solution badly.

Summary of the invention

In view of this, the invention provides a kind of method of coil molding, when reducing the coil molding difficulty, reduce the injury to the turn-to-turn insulation layer.

For achieving the above object, the invention provides following technical scheme:

A kind of method of coil molding, with the wire coiling in the coil on the frame mould time, also utilize the pivot extruding wire of roller devices frame mould in the coil.

Preferably, in above-mentioned method, roller devices moves up and down with the rotation of frame mould in the coil.

The invention provides a kind of method of coil molding, with the wire coiling in the coil on the frame mould time, also utilize the pivot extruding wire of roller devices frame mould in the coil.

Can find out, coil the wire of interior frame mould by adopting the roller devices extruding, can make and fit between the levels wire closely, almost very close to each other, reduced the coil molding difficulty.Simultaneously, the pulling force that acts on the wire is reduced, also just reduced the injury of wire to the turn-to-turn insulation layer.

A kind of device of coil molding comprises frame mould in the coil that can be rotatably set on the frame, also comprises:

Roller devices, roller devices comprise turning rolls, be fixedly installed on the axle on the turning rolls and be set in roller on the axle; With

Can make roller surface apart from the distance of the coil inside casing die surface hydraulic stem less than diameter of wire, hydraulic stem is arranged between roller devices and the frame.

Preferably, in above-mentioned device, the axis of hydraulic stem is perpendicular to the rotation of roller.

The present invention also provides a kind of device of coil molding, comprises frame mould, roller devices and hydraulic stem in frame, the coil.Frame mould can be rotatably set on the frame in the coil; Roller devices comprises turning rolls, be fixedly installed on the axle on the turning rolls and be set in roller on the axle; Hydraulic stem is arranged between roller devices and the frame, and under the effect of hydraulic stem, roller surface can be less than diameter of wire apart from the distance of coil inside casing die surface.

When using device coiling provided by the present invention, at first, an end of wire is fixed in the coil on the frame mould; Then, frame mould in revolving coil, with the wire coiling in the coil on the frame mould time, one side is by hydraulic stem and roller devices extruding wire, another side is fitted closely thereby make between the levels wire with the opposite direction horizontal drawing wire of suitable pulling force to the coiling direction.

Can find out, when using device coiling provided by the present invention, not only to the opposite direction horizontal drawing wire of coiling direction, also utilize roller devices extruding wire, thereby wire can closely be fitted, thereby reduced the coil molding difficulty; Simultaneously, reduce to be applied to the size of the pulling force on the wire, and then reduced the injury to the turn-to-turn insulation layer.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the schematic diagram of existing horizontal drawing wire winding method;

The schematic diagram of the method for the coil molding that Fig. 2 provides for the embodiment of the invention;

Fig. 3 is the structural representation of roller devices;

Fig. 4 is the cross sectional representation in A-A cross section among Fig. 3.

Among above Fig. 1-4:

Inside casing mould 1, wire 2, roller devices 3, turn-to-turn insulation layer 4, turning rolls 30, axle 31, roller 32.

Embodiment

The embodiment of the invention discloses a kind of method of coil molding, when reducing the coil molding difficulty, reduce the injury to the turn-to-turn insulation layer.

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

Please refer to Fig. 2, with wire 2 coilings in the coil on the frame mould 1 time, also utilize the pivot extruding wire of roller devices 3 frame mould 1 in the coil.

By adopting roller devices 3 extruding coiling the wire 2 of interior frame mould 1,2 in levels wire is fitted closely, almost very close to each other, reduced the coil molding difficulty.Simultaneously, the pulling force that acts on the wire is reduced, also just reduced the injury of wire to turn-to-turn insulation layer 4.

Further, more even in order to make in the coil that coiling goes out the pulling force on the wire, when carrying out coiling, roller devices 3 is moved up and down with the rotation of frame mould in the coil 1, thereby make roller devices 3 be applied to constant pressure on the wire.

The present invention also provides a kind of device of coil molding, please refer to Fig. 2-4, comprises frame mould 1, roller devices 3 and hydraulic stem (not shown) in frame (not shown), the coil.

Frame mould 1 can be rotatably set on the frame in the coil.

Roller devices 3 comprises turning rolls 30, be fixedly installed on the axle 31 on the turning rolls 30 and be set in roller 32 on the axle 31.

Hydraulic stem is arranged between roller devices 3 and the frame.Under the effect of hydraulic stem, the distance of roller 32 surface lies coil inside casing die surfaces 1 can be less than diameter of wire.

When using device coiling provided by the present invention, at first, an end of wire 2 is fixed in the coil on the frame mould 1; Then, frame mould 1 in revolving coil, with wire 2 coilings in the coil on the frame mould 1 time, one side is by hydraulic stem and roller devices 3 extruding wires 2, another side is with the opposite direction horizontal drawing wire 2 of suitable pulling force to the coiling direction, thereby it is tight that 2 in levels wire is fitted.

Can find out, when using device coiling provided by the present invention, not only to the opposite direction horizontal drawing wire of coiling direction, also utilize roller devices 3 extruding wires, thereby wire can closely be fitted, thereby reduced the coil molding difficulty; Simultaneously, reduce to be applied to the size of the pulling force on the wire 2, and then reduced the injury to turn-to-turn insulation layer 4.

Preferably, in the device that above-described embodiment provides, the axis of hydraulic stem is perpendicular to the rotation of roller 32.Can find out that overlap by making two axial lines, the pressure that roller 32 is applied on the wire 2 can vertically be delivered on the rotating shaft of frame mould 1 in the coil, thereby has improved the stressing conditions of this rotating shaft.

What it may occur to persons skilled in the art that is, in order to make the work that roller devices 3 can be smooth-going, need to add lubricating oil or lubricating grease etc. between axle 31 and roller 32, to reduce the friction between two parts.Further, can also between axle 31 and roller 32, bearing be set.

Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. the method for a coil molding is characterized in that, with the wire coiling in the coil on the frame mould time, also utilize roller devices pivot of frame mould in the described coil to push described wire.

2. method according to claim 1 is characterized in that, described roller devices moves up and down with the rotation of frame mould in the described coil.

3. the device of a coil molding comprises frame mould in the coil that can be rotatably set on the frame, it is characterized in that, also comprises:

Roller devices, described roller devices comprise turning rolls, be fixedly installed on the axle on the described turning rolls and be set in roller on the described axle; With

Can make the distance of the described coil inside casing die surface of described roller surface distance less than the hydraulic stem of diameter of wire, described hydraulic stem is arranged between described roller devices and the described frame.

4. device according to claim 3 is characterized in that, the axis of described hydraulic stem is perpendicular to the rotation of described roller.