CN111115374A

CN111115374A - Winding method capable of achieving uniform linear speed

Info

Publication number: CN111115374A
Application number: CN201911392704.7A
Authority: CN
Inventors: 李磊; 贾丽红; 吕小科; 张文斌
Original assignee: Suzhou Lvkong New Energy Technology Co ltd
Current assignee: Suzhou Lvkong New Energy Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-05-08

Abstract

The invention provides a winding method with uniform linear speed, which enables the winding tension to be consistent when a stator is wound, can be quickly formed and improves the winding efficiency. The method comprises the steps that coiled wires are transferred to a positive circle winding template at a uniform wire speed, then the wires on the positive circle winding template are taken down and directly sleeved on the periphery of a rectangular winding, expansion heads at two ends of the rectangular winding are of a semicircular structure, arc surfaces of the two expansion heads are arranged in a back-to-back mode, and the arc heads of the semicircular structure are driven by a cylinder to expand outwards until the actual shape of an approximate winding in a groove of a stator is formed.

Description

Winding method capable of achieving uniform linear speed

Technical Field

The invention relates to the technical field of stator winding, in particular to a winding method for uniform linear speed.

Background

In the motor industry, winding tension is a key control point in a stator winding process, the winding tension influences a pulling force, winding resistance is influenced, and the paint film integrity rate on the surface of a winding is influenced; when adopting the winding former to rotate the wire winding mode, angular velocity is certain, and the linear velocity is directly proportional with the distance at wire winding edge to wire winding pole center, and traditional wire winding mould is the non-circular die core, and the aspect ratio, the ellipticity is great, and then the tension fluctuation is big, in order to make the biggest tension satisfy the requirement, causes wire winding inefficiency, influences the wire winding quality.

Disclosure of Invention

In order to solve the problems, the invention provides a winding method with uniform linear speed, which enables the winding tension to be consistent when a stator is wound, can be quickly formed and improves the winding efficiency.

A winding method with uniform linear speed is characterized in that: the method comprises the steps that coiled wires are transferred to a positive circle winding template at a uniform wire speed, then the wires on the positive circle winding template are taken down and directly sleeved on the periphery of a rectangular winding, expansion heads at two ends of the rectangular winding are of a semicircular structure, arc surfaces of the two expansion heads are arranged in a back-to-back mode, and the arc heads of the semicircular structure are driven by a cylinder to expand outwards until the actual shape of an approximate winding in a groove of a stator is formed.

It is further characterized in that: the diameter of the right circular winding template is larger than the linear distance between the expansion heads at the two ends of the rectangular winding which is not expanded outwards, so that the wire taken down from the right circular winding template is conveniently sleeved on the periphery of the rectangular winding;

one arc head of the rectangular winding is fixedly arranged at the end of a fixed seat of the expansion cylinder, the other arc head of the rectangular winding is arranged at the output end of the piston head, and the expansion cylinder is provided with a corresponding driving distance according to the length of the groove of the stator to form an actual shape similar to that of the winding in the groove of the stator;

the right circular winding template comprises a plurality of side convex rods which are annularly distributed, the side convex rods are arranged in an equal diameter mode relative to the central shaft, the radial outer surfaces of the side convex rods are arc surfaces, the formed winding is ensured to be circular, and a worker is ensured to conveniently take down corresponding lines from the right circular winding template.

After the technical scheme is adopted, the right circular winding template and the rectangular winding are matched for use, so that the problem of inconsistent winding tension is solved, and quick forming can be realized; the distance from the edge of a winding to a central shaft is consistent by the right-circular winding template, the linear speed is consistent under the condition of a certain angular speed, so that the tension of the winding is consistent, and then a winding forming mechanism is used for forming, so that a square-circular winding is converted into a rectangular winding, namely the actual shape of the winding in a groove is approximate; the winding tension of the stator during winding is consistent, the stator can be quickly formed, and the winding efficiency is improved.

Drawings

FIG. 1 is a schematic flow chart of a winding method according to the present invention;

FIG. 2 is a schematic front view of the right circular winding form of the present invention;

FIG. 3 is a schematic front view of a rectangular winding according to the present invention;

the names corresponding to the sequence numbers in the figure are as follows:

the device comprises a positive circular winding template 1, a central shaft 11, a rectangular winding 2, an expansion head 21, an expansion cylinder 3, a fixed seat end 31, a piston head 32, a side convex rod 12 and a circular arc surface 121.

Detailed Description

A winding method with uniform linear speed, which is shown in figures 1-3: the coiled wire is firstly transferred to a positive round wire winding template 1 at a uniform wire speed, then the wire on the positive round wire winding template 1 is taken down and directly sleeved on the periphery of a rectangular winding 2, the expansion heads 21 at the two ends of the rectangular winding 2 are both of a semi-circular structure, the arc surfaces of the two expansion heads 21 are arranged in a back-to-back manner, and the arc heads of the semi-circular structure are driven by a cylinder to expand outwards until the actual shape of the approximate winding in the groove of the stator is formed.

The diameter of the right circular winding template 1 is larger than the linear distance of the expansion heads 21 at the two ends of the rectangular winding 2 which is not expanded outwards, so that the wire taken down from the right circular winding template 1 is ensured to be conveniently sleeved on the periphery of the rectangular winding 2;

one of the arc heads of the rectangular winding 2 is fixedly arranged at the fixed seat end 31 of the expansion cylinder 3, the other arc head is arranged at the output end of the piston head 32, and the expansion cylinder 3 is provided with a corresponding driving distance according to the length of the groove of the stator to form an actual shape similar to that of the winding in the groove of the stator;

the positive circular winding template 1 comprises a plurality of side convex rods 12 which are distributed annularly, the side convex rods 12 are arranged in an equal diameter mode relative to a central shaft 11, the radial outer surfaces of the side convex rods 12 are arc surfaces 121, the formed winding is ensured to be circular, and a worker is ensured to conveniently take down corresponding wires from the positive circular winding template.

The working principle is as follows: the right circular winding template and the rectangular winding are matched for use, so that the problem of inconsistent winding tension is solved, and quick forming can be realized; the distance from the edge of a winding to a central shaft is consistent by the right circular winding template, the linear speed is consistent under the condition of a certain angular speed, so that the tension of the winding is consistent, and then a winding forming mechanism is used for forming, so that a square circular winding is quickly converted into a rectangular winding, namely the actual shape of the winding in a groove is approximate; the winding tension of the stator during winding is consistent, the stator can be quickly molded, and the winding efficiency is improved; the tension is consistent, so that the cross sections of all the sections of the winding are the same, and the resistance is consistent; the completeness of the paint film is improved, and all the points of the winding are consistent.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A winding method with uniform linear speed is characterized in that: the method comprises the steps that coiled wires are transferred to a positive circle winding template at a uniform wire speed, then the wires on the positive circle winding template are taken down and directly sleeved on the periphery of a rectangular winding, expansion heads at two ends of the rectangular winding are of a semicircular structure, arc surfaces of the two expansion heads are arranged in a back-to-back mode, and the arc heads of the semicircular structure are driven by a cylinder to expand outwards until the actual shape of an approximate winding in a groove of a stator is formed.

2. A uniform linear speed winding method as defined in claim 1, wherein: the diameter of the right circular winding template is larger than the linear distance between the expansion heads at the two ends of the rectangular winding which is not expanded outwards, so that the wire taken down from the right circular winding template is conveniently sleeved on the periphery of the rectangular winding.

3. A uniform linear speed winding method as defined in claim 2, wherein: one arc head of the rectangular winding is fixedly arranged at the end of the fixed seat of the expansion cylinder, the other arc head of the rectangular winding is arranged at the output end of the piston head, and the expansion cylinder is provided with a corresponding driving distance according to the length of the groove of the stator to form an actual shape which is similar to that of the winding in the groove of the stator.

4. A uniform linear speed winding method as defined in claim 1, wherein: the normal circular winding template comprises a plurality of side convex rods which are annularly distributed, the side convex rods are arranged in an equal diameter mode relative to the central shaft, and the radial outer surfaces of the side convex rods are arc surfaces.