阅读说明：本技术 一种定子铁芯绕组线包的嵌线工装及嵌线方法 (Wire inserting tool and wire inserting method for stator core winding wire packet ) 是由 周锦添 吕文献 苏桂文 于 2021-01-08 设计创作，主要内容包括：本发明公开了一种定子铁芯绕组线包的嵌线工装及嵌线方法。嵌线工装包括依次连接的嵌线导入模头和操作部；所述嵌线导入模头呈柱状,嵌线导入模头上设有长窄槽；所述长窄槽横向贯通嵌线导入模头的两侧,长窄槽贯通至嵌线导入模头的顶端。嵌线方法的步骤包括通过嵌线工装将绕组线包的短边线包夹住后伸入定子铁芯内,再取出嵌线工装。本发明提供的定子铁芯绕组线包的嵌线工装及嵌线方法,解决了由于电机定子铁芯内孔过长、直径过小,而生产上无法手工嵌线的工艺难题,从而提高细长微电机定子嵌线工序的生产效率。(The invention discloses a coil inserting tool and a coil inserting method for a stator core winding coil. The inserting line tool comprises an inserting line leading-in die head and an operating part which are connected in sequence; the inserted line leading-in die head is columnar, and a long narrow groove is formed in the inserted line leading-in die head; the long and narrow grooves transversely penetrate through two sides of the inserting line leading-in die head, and penetrate through to the top end of the inserting line leading-in die head. The coil inserting method comprises the steps of clamping a short-edge coil of a winding coil through a coil inserting tool, extending the short-edge coil into a stator core, and taking out the coil inserting tool. The coil inserting tool and the coil inserting method for the stator core winding coil solve the technical problem that manual coil inserting cannot be carried out in production due to the fact that the inner hole of the motor stator core is too long and the diameter of the motor stator core is too small, and therefore production efficiency of a coil inserting process of a slender micromotor stator is improved.)

1. A coil inserting tool for a stator core winding coil is characterized by comprising a coil inserting leading-in die head (1) and an operating part which are sequentially connected; the inserted line leading-in die head (1) is columnar, and a long narrow groove (2) is formed in the inserted line leading-in die head (1); the long and narrow grooves (2) transversely penetrate through two sides of the inserting line leading-in die head (1), and the long and narrow grooves (2) penetrate through to the top end of the inserting line leading-in die head (1).

2. The coil inserting tool for the winding coil of the stator core as claimed in claim 1, wherein the coil inserting lead-in die head (1) comprises a lead-in part (11), a guide part (12) and a connecting part (13) which are sequentially arranged from the top to the bottom of the die head; the cross-sectional dimension of the lead-in part (11) gradually increases from the top to the bottom thereof; the cross section of the guide part (12) is matched with the bottom of the guide-in part (11); a connecting part (13) is connected with the operating part; the long and narrow groove (2) transversely penetrates through both sides of the guide part (12) and the introduction part (11).

3. The coil inserting tool for the stator core winding coil as claimed in claim 2, wherein the lead-in portion (11) and the connecting portion (13) are both in the shape of a circular truncated cone, and the guide portion (12) is in the shape of a cylinder.

4. The coil inserting tool for stator core winding coils as claimed in claim 1, 2 or 3, wherein the operating part comprises a connecting rod (3) and a handle (4); the inserted line leading-in die head (1), the connecting rod (3) and the handle (4) are connected in sequence.

5. The coil inserting tool for the stator core winding coil as claimed in claim 4, wherein the connecting rod (3) is detachably connected with the coil inserting die head (1).

6. A coil inserting method of a stator core winding coil is characterized in that according to the number of cross slots of winding slots, a short-side coil of the winding coil (5) is sleeved into a long and narrow slot (2) corresponding to a coil inserting leading-in die head (1) of a coil inserting tool of the stator core winding coil according to claim 1; inserting the inserted wire into the die head (1) into the corresponding stator slot cavity (71) along the axial direction of the stator iron core (7), and inserting the winding wire package (5) sleeved on the inserted wire introducing die head (1) into the stator slot cavity (71); inserting the insulation slot wedges (9) into the corresponding stator slot cavities (71) and covering the winding coil (5), wherein the insertion depth of the insulation slot wedges is the same as that of the winding coil (5); completely inserting a winding coil (5) and an insulation slot wedge (9) into a stator slot cavity (71) through a coil inserting leading-in die head (1); the inserting line is taken out and guided into a die head (1).

7. The method for inserting the winding coil of the stator core as claimed in claim 6, wherein the short-side coil of the winding coil (5) is wrapped by the protective soft film (6) before the short-side coil of the winding coil (5) is sleeved into the long and narrow slot (2).

8. A method of inserting a winding package for a stator core according to claim 6, characterised in that the inner wall of the stator slot cavity (71) of the stator core (7) is covered with insulating slot paper (8) before the insertion is introduced into the die head (1) and inserted into the corresponding stator slot cavity (71) in the axial direction of the stator core (7).

9. A method of inserting a winding package for a stator core according to claim 6, characterised in that the winding package (5) is partially inserted into the stator slot cavity (71) over the insertion die head (1), the insertion depth of the winding package (5) being 1/5-2/5 of the length of the stator slot cavity (71).

Technical Field

The invention relates to the field of motor production, in particular to a wire inserting tool and a wire inserting method for a stator core winding wire packet.

Background

The fractional horsepower single-phase asynchronous motor is widely applied daily, and in many times, a designer generally sets a motor stator into a structure with a large diameter and a small iron core length for simplifying the motor stator winding wire embedding process and facilitating operation. However, in recent years, due to the increasing requirements of application environment and use occasions, a side magnetic braking single-phase asynchronous motor micromotor with a large length-diameter ratio appears. The miniature motor assembly product is a slender miniature motor assembly product with a braking device, wherein the stator core is long, and the diameter of an inner hole of the stator core is small. The production and the application of the method are rapidly developed in China, particularly in Guangdong province and Zhejiang province, the production of manufacturers is accumulated to hundreds of thousands to millions of products every year, and most products are exported. The power component can be frequently used in daily life and work, such as a window roller shutter used at home, a high-end projection screen used in an office place, a high-end roller shutter door used in smart home, a sunshade and the like, and the power component is required to be installed on the products for power supply.

Due to the limitation of practical application environment and practical application space, the structure needs to be designed into a motor structure with a large length-diameter ratio, so that the motor can be structurally designed only with a large length-diameter ratio of the length-diameter ratio. The design causes technical defects of complex process, great difficulty and the like in manufacturing the stator inserted line of the micromotor. If the traditional manual wire inserting method is used, the wire inserting cannot be realized in the aspect of production due to the large length-diameter ratio. The traditional manual wire inserting method for manufacturing the motor stator has enough manual operation space, and a winding wire packet is inserted into a stator core slot from a stator core radial direction by hands and is inserted into the stator core slot from a notch, but if the long and thin micromotor stator has insufficient operation space, the stator core slot cannot be inserted into the stator core slot from the radial direction.

Disclosure of Invention

The invention aims to provide a coil inserting tool and a coil inserting method for a stator core winding coil, which solve the technical problem that manual coil inserting cannot be carried out in production due to too long inner holes and too small diameters of a stator core of a motor, and further improve the production efficiency of the coil inserting process of a stator of a slender micromotor.

In order to achieve the purpose, the invention provides a coil inserting tool for a stator core winding coil, which comprises a coil inserting leading-in die head and an operating part which are connected in sequence; the inserted line leading-in die head is columnar, and a long narrow groove is formed in the inserted line leading-in die head; the long and narrow grooves transversely penetrate through two sides of the inserting line leading-in die head, and penetrate through to the top end of the inserting line leading-in die head.

As a further improvement of the present invention, the insert wire introduction die head includes an introduction portion, a guide portion, and a connecting portion arranged in this order from the top thereof to the bottom thereof; the cross-sectional dimension of the lead-in part gradually increases from the top to the bottom thereof; the cross section of the guide part is matched with the bottom of the guide-in part; the connecting part is connected with the operating part; the long and narrow groove transversely penetrates through both sides of the guide part and the guide part.

In a further improvement of the present invention, the introduction portion and the connection portion are both in the shape of a circular truncated cone, and the guide portion is in the shape of a cylinder.

As a further improvement of the present invention, the operation portion includes a connecting rod and a handle; the inserted line leading-in die head, the connecting rod and the handle are connected in sequence.

As a further improvement of the present invention, the connecting bar is detachably connected to the rule introducing die.

In order to achieve the above object, the present invention further provides a method for inserting a winding coil of a stator core, wherein according to the number of cross slots of winding slots, a short-side coil of the winding coil is inserted into a long and narrow slot corresponding to the insertion lead-in die head of the insertion tool for the winding coil of the stator core according to claim 1; inserting the inserted wire leading-in die head into the corresponding stator slot cavity along the axial direction of the stator core, and inserting the winding coil part sleeved on the inserted wire leading-in die head into the stator slot cavity; inserting the insulation slot wedges into corresponding stator slot cavities and covering the winding coils, wherein the insertion depth of the insulation slot wedges is the same as that of the winding coils; completely inserting the winding coil and the insulation slot wedge into the stator slot cavity through the inserted wire leading-in die head; the insert wire is removed and introduced into the die.

As a further improvement of the present invention, before the short-side coil of the winding coil is fitted into the long and narrow groove, the short-side coil of the winding coil is wrapped with a protective soft film.

As a further improvement of the invention, before the inserted wire is led into the die head and is inserted into the corresponding stator slot cavity along the axial direction of the stator core, the inner wall of the stator slot cavity of the stator core is covered with insulating slot paper.

As a further improvement of the invention, when the winding coil part sleeved on the wire embedding leading-in die head is inserted into the stator slot cavity, the insertion depth of the winding coil is 1/5-2/5 of the length of the stator slot cavity.

Advantageous effects

Compared with the prior art, the coil inserting tool and the coil inserting method for the stator core winding coil have the advantages that:

1. aiming at the problem that the traditional micromotor slender-hole stator cannot be radially embedded with wires from a stator core, the wire embedding method for axially pushing a winding wire packet is implemented by designing the tool for axially inserting the wires from the stator core, so that the technical problem that the traditional radial wire-inserting manual wire embedding cannot be used due to overlong inner holes and undersized diameters of the motor stator is solved, and the production efficiency of the micromotor wire embedding process of the slender stator assembly is remarkably improved.

2. The coil inserting tool is simple in structure, and a finished product can be processed only by adopting a general machining method in the manufacturing process of the tool, so that the coil inserting tool is convenient to popularize and apply to the coil inserting process of the stator winding of the micro motor with the slender holes.

3. The coil inserting method of axially pushing the winding coil is ingenious, the process is simple, operators can easily master the coil inserting process operation, and the coil inserting efficiency of the elongated hole stator winding is obviously improved. Because the winding wire wrap protective flexible film is used in the wire embedding process, the insulated paint layer of the wire wrap enameled wire can be obviously protected, and the voltage-resistant quality of the micromotor is greatly improved.

The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a front view of a coil inserting tool for a stator core winding coil;

FIG. 2 is a cross-sectional view of a coil inserting tool for a stator core winding coil;

FIG. 3 is a cross-sectional view of a stator core;

FIG. 4 is a schematic diagram of the winding coil and the protective film;

fig. 5 is a schematic diagram of the fitting tool of the stator core winding coil and the winding coil;

fig. 6 is one of the state diagrams of the inserting tool and the winding coil inserted into the stator core;

fig. 7 is a second state view of the coil inserting tool and the winding coil inserted into the stator core;

fig. 8 is a third state view of the coil inserting tool and the winding coil inserted into the stator core;

fig. 9 is a schematic view of the completed assembly of the winding package with the stator core.

Detailed Description

Embodiments of the present invention will now be described with reference to the accompanying drawings.

Examples

Referring to fig. 1 to 5, a coil inserting tool for a stator core winding coil includes a coil inserting lead-in die 1 and an operating portion connected in sequence. The inserting line leading-in die head 1 is columnar, and a long narrow groove 2 is arranged on the inserting line leading-in die head 1. The long and narrow grooves 2 penetrate both sides of the insert line introduction die 1 in the lateral direction, and the long and narrow grooves 2 penetrate to the tip of the insert line introduction die 1. The inserted line leading-in die head 1 is made of steel and is integrally chromed. The long and narrow grooves 2 are subjected to finish polishing. The number of the long and narrow grooves 2 may be one or more than two. In this embodiment, there are three long narrow grooves 2, each long narrow groove 2 penetrates through the central axis of the rule and is led into the die head 1, and the included angle between adjacent long narrow grooves 2 is 30 °. The coil inserting tool is suitable for coil inserting with the ratio of the length of a stator iron core of a micromotor to the diameter of an inner hole of more than 3.

The invention takes a single-phase asynchronous motor micromotor as an example to explain the wire inserting process of the tool. The diameter and the length of the outer circle of the stator core 7 of the micromotor are phi 34mmx80mm respectively, and the diameter and the length of the inner circle of the stator are phi 18mmx80mm respectively.

The insert-line introduction die 1 includes an introduction portion 11, a guide portion 12, and a connecting portion 13 arranged in this order from the top toward the bottom thereof. The cross-sectional size of the introduction portion 11 gradually increases from the top thereof toward the bottom thereof. The cross-sectional dimension of the guide portion 12 is adapted to the bottom of the introduction portion 11. The connection portion 13 is connected to the operation portion. The long narrow groove 2 extends transversely through both sides of the guide portion 12 and the introduction portion 11. The width of the long and narrow slots 2 should be slightly less than the width of the stator core slot opening for nesting the winding package to be embedded. The bottom of the long and narrow groove 2 is processed with an inclined plane, which is used for leading the thread package to be consistent with the stress direction when leading the thread package, thereby reducing the leading-in resistance.

In this embodiment, the introduction portion 11 and the connection portion 13 are both circular truncated cone-shaped, and the guide portion 12 is cylindrical. Further, the cross section of the insert line introduction die 1 may be polygonal as needed.

The operating portion includes a connecting rod 3 and a handle 4. The inserting line leading-in die head 1, the connecting rod 3 and the handle 4 are connected in sequence. The handle 4 is of plastic or wood material.

The connecting rod 3 is detachably connected with the inserting line leading-in die head 1. In this embodiment, the connecting rod 3 is in threaded connection with the connecting portion 13 of the inserting line leading-in die head 1, so that the corresponding inserting line leading-in die head 1 can be replaced conveniently according to the stator cores 7 with different sizes.

A wire inserting method for a stator core winding coil comprises the following steps:

1) according to the design requirements of the wire diameter and the number of turns of the winding enameled wire of the micromotor and the sizes of the long side and the short side of the coil, a plurality of winding wire packages 5 are wound, and wire tails 51 are arranged at the tail parts of the winding wire packages 5. The elongated hole stator cores 7 in the stator slot cavities 71 are ready, which have been fitted with insulation slot paper 8. And preparing one inserting wire tool for inserting wires and two insulating slot wedges 9.

2) The short-side coils of the winding coils 5 are wrapped with a protective soft film 6. The wire tail 51 is located at the short side coil at the other end of the winding coil 5. According to the number of the cross slots of the winding slots, the short-edge coil wrapped with the protective soft film 6 of the winding coil 5 is sleeved into the long and narrow slot 2 corresponding to the inserting line leading-in die head 1 of the inserting line tool of the stator core winding coil.

3) The insertion wire introduction die 1 is inserted into the corresponding stator slot cavity 71 along the axial direction of the stator core 7, and the winding wire packet 5 fitted on the insertion wire introduction die 1 is partially inserted into the stator slot cavity 71. The insertion depth of the winding package 5 is now 1/5-2/5, preferably 1/3, of the length of the stator slot cavity 71.

4) The insulation wedges 9 are inserted into the corresponding stator slot cavities 71 and cover the winding package 5 to the same insertion depth as the winding package 5.

5) The winding package 5 and the insulation wedge 9 are completely inserted into the stator slot cavity 71 by means of the rule insertion die 1.

6) Reversely drawing out the inserting line to be led into the die head 1, unloading the wrapped protective soft film 6 and finishing the inserting line process of the 1 st coil.

7) And (5) continuing to embed the wire embedding process of the rest stator slots according to the requirement of the number of the cross slots of the winding slots by using the same process steps.

The present invention has been described in connection with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, and is intended to cover various modifications, equivalent combinations, which are made in accordance with the spirit of the present invention.